From 1624ae1c19e227096ba85bfc389d9b99cb6f7dde Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 6 May 2010 13:40:08 -0700 Subject: USB: xhci: Fix issue with set interface after stall. When the USB core installs a new interface, it unconditionally clears the halts on all the endpoints on the new interface. Usually the xHCI host needs to know when an endpoint is reset, so it can change its internal endpoint state. In this case, it doesn't care, because the endpoints were never halted in the first place. To avoid issuing a redundant Reset Endpoint command, the xHCI driver looks at xhci_virt_ep->stopped_td to determine if the endpoint was actually halted. However, the functions that handle the stall never set that variable to NULL after it dealt with the stall. So if an endpoint stalled and a Reset Endpoint command completed, and then the class driver tried to install a new alternate setting, the xHCI driver would access the old xhci_virt_ep->stopped_td pointer. A similar problem occurs if the endpoint has been stopped to cancel a transfer. Signed-off-by: Sarah Sharp Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 7 +++++++ drivers/usb/host/xhci.c | 2 ++ 2 files changed, 9 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 85d7e8f2085e..b520b37c0f36 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -578,6 +578,8 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, /* Otherwise just ring the doorbell to restart the ring */ ring_ep_doorbell(xhci, slot_id, ep_index); } + ep->stopped_td = NULL; + ep->stopped_trb = NULL; /* * Drop the lock and complete the URBs in the cancelled TD list. @@ -1061,8 +1063,13 @@ static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, ep->ep_state |= EP_HALTED; ep->stopped_td = td; ep->stopped_trb = event_trb; + xhci_queue_reset_ep(xhci, slot_id, ep_index); xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); + + ep->stopped_td = NULL; + ep->stopped_trb = NULL; + xhci_ring_cmd_db(xhci); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 7e4277273908..077dfcd57dc9 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1438,6 +1438,8 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, kfree(virt_ep->stopped_td); xhci_ring_cmd_db(xhci); } + virt_ep->stopped_td = NULL; + virt_ep->stopped_trb = NULL; spin_unlock_irqrestore(&xhci->lock, flags); if (ret) -- cgit v1.2.3-58-ga151 From bc88d2eba5e19d10dd546e428314909d889b3b6a Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 18 May 2010 16:05:21 -0700 Subject: USB: xhci: Limit bus sg_tablesize to 62 TRBs. When a scatter-gather list is enqueued to the xHCI driver, it translates each entry into a transfer request block (TRB). Only 63 TRBs can be used per ring segment, and there must be one additional TRB reserved to make sure the hardware does not think the ring is empty (so the enqueue pointer doesn't equal the dequeue pointer). Limit the bus sg_tablesize to 62 TRBs. Signed-off-by: Sarah Sharp Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 417d37aff8d7..98a73cd20cc6 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -54,7 +54,7 @@ static int xhci_pci_setup(struct usb_hcd *hcd) struct pci_dev *pdev = to_pci_dev(hcd->self.controller); int retval; - hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 1; + hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2; xhci->cap_regs = hcd->regs; xhci->op_regs = hcd->regs + -- cgit v1.2.3-58-ga151 From 44ebd037c54f80db3121ac9f5fe6e677b76e11d5 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 18 May 2010 16:05:26 -0700 Subject: USB: xhci: Fix check for room on the ring. The length of the scatter gather list a driver can enqueue is limited by the bus' sg_tablesize to 62 entries. Each entry will be described by at least one transfer request block (TRB). If the entry's buffer crosses a 64KB boundary, then that entry will have to be described by two or more TRBs. So even if the USB device driver respects sg_tablesize, the whole scatter list may take more than 62 TRBs to describe, and won't fit on the ring. Don't assume that an empty ring means there is enough room on the transfer ring. The old code would unconditionally queue this too-large transfer, and over write the beginning of the transfer. This would mean the cycle bit was unchanged in those overwritten transfers, causing the hardware to think it didn't own the TRBs, and the host would seem to hang. Now drivers may see submit_urb() fail with -ENOMEM if the transfers are too big to fit on the ring. Signed-off-by: Sarah Sharp Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index b520b37c0f36..407d33fb5e84 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -242,10 +242,27 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, int i; union xhci_trb *enq = ring->enqueue; struct xhci_segment *enq_seg = ring->enq_seg; + struct xhci_segment *cur_seg; + unsigned int left_on_ring; /* Check if ring is empty */ - if (enq == ring->dequeue) + if (enq == ring->dequeue) { + /* Can't use link trbs */ + left_on_ring = TRBS_PER_SEGMENT - 1; + for (cur_seg = enq_seg->next; cur_seg != enq_seg; + cur_seg = cur_seg->next) + left_on_ring += TRBS_PER_SEGMENT - 1; + + /* Always need one TRB free in the ring. */ + left_on_ring -= 1; + if (num_trbs > left_on_ring) { + xhci_warn(xhci, "Not enough room on ring; " + "need %u TRBs, %u TRBs left\n", + num_trbs, left_on_ring); + return 0; + } return 1; + } /* Make sure there's an extra empty TRB available */ for (i = 0; i <= num_trbs; ++i) { if (enq == ring->dequeue) -- cgit v1.2.3-58-ga151 From 27729aadd31dafddaaf64c24f8ef6d0ff750f3aa Mon Sep 17 00:00:00 2001 From: Eric Lescouet Date: Sat, 24 Apr 2010 23:21:52 +0200 Subject: USB: make hcd.h public (drivers dependency) The usbcore headers: hcd.h and hub.h are shared between usbcore, HCDs and a couple of other drivers (e.g. USBIP modules). So, it makes sense to move them into a more public location and to cleanup dependency of those modules on kernel internal headers. This patch moves hcd.h from drivers/usb/core into include/linux/usb/ Signed-of-by: Eric Lescouet Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/staging/usbip/stub_rx.c | 2 +- drivers/staging/usbip/vhci.h | 2 +- drivers/usb/c67x00/c67x00-hcd.h | 2 +- drivers/usb/core/buffer.c | 2 +- drivers/usb/core/config.c | 3 +- drivers/usb/core/devices.c | 2 +- drivers/usb/core/devio.c | 3 +- drivers/usb/core/driver.c | 3 +- drivers/usb/core/generic.c | 2 +- drivers/usb/core/hcd-pci.c | 2 +- drivers/usb/core/hcd.c | 3 +- drivers/usb/core/hcd.h | 578 ---------------------------------------- drivers/usb/core/hub.c | 3 +- drivers/usb/core/inode.c | 2 +- drivers/usb/core/message.c | 2 +- drivers/usb/core/urb.c | 2 +- drivers/usb/core/usb.c | 2 +- drivers/usb/gadget/dummy_hcd.c | 4 +- drivers/usb/host/ehci-hcd.c | 3 +- drivers/usb/host/fhci-dbg.c | 2 +- drivers/usb/host/fhci-hcd.c | 2 +- drivers/usb/host/fhci-hub.c | 2 +- drivers/usb/host/fhci-mem.c | 2 +- drivers/usb/host/fhci-q.c | 2 +- drivers/usb/host/fhci-sched.c | 2 +- drivers/usb/host/fhci-tds.c | 2 +- drivers/usb/host/fhci.h | 2 +- drivers/usb/host/imx21-hcd.c | 2 +- drivers/usb/host/isp116x-hcd.c | 2 +- drivers/usb/host/isp1362-hcd.c | 2 +- drivers/usb/host/isp1760-hcd.c | 2 +- drivers/usb/host/isp1760-if.c | 2 +- drivers/usb/host/ohci-hcd.c | 2 +- drivers/usb/host/oxu210hp-hcd.c | 3 +- drivers/usb/host/r8a66597-hcd.c | 2 +- drivers/usb/host/sl811-hcd.c | 2 +- drivers/usb/host/u132-hcd.c | 2 +- drivers/usb/host/uhci-hcd.c | 2 +- drivers/usb/host/xhci.h | 2 +- drivers/usb/misc/ftdi-elan.c | 2 +- drivers/usb/mon/mon_main.c | 3 +- drivers/usb/musb/musb_core.h | 2 +- drivers/usb/wusbcore/wusbhc.h | 4 +- include/linux/usb/hcd.h | 578 ++++++++++++++++++++++++++++++++++++++++ 44 files changed, 623 insertions(+), 629 deletions(-) delete mode 100644 drivers/usb/core/hcd.h create mode 100644 include/linux/usb/hcd.h (limited to 'drivers') diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c index bc2674086673..da30658fa048 100644 --- a/drivers/staging/usbip/stub_rx.c +++ b/drivers/staging/usbip/stub_rx.c @@ -21,7 +21,7 @@ #include "usbip_common.h" #include "stub.h" -#include "../../usb/core/hcd.h" +#include static int is_clear_halt_cmd(struct urb *urb) diff --git a/drivers/staging/usbip/vhci.h b/drivers/staging/usbip/vhci.h index 5e375173bbce..41a1fe5138f4 100644 --- a/drivers/staging/usbip/vhci.h +++ b/drivers/staging/usbip/vhci.h @@ -18,7 +18,7 @@ */ #include -#include "../../usb/core/hcd.h" +#include struct vhci_device { diff --git a/drivers/usb/c67x00/c67x00-hcd.h b/drivers/usb/c67x00/c67x00-hcd.h index e8c6d94b2514..74e44621e313 100644 --- a/drivers/usb/c67x00/c67x00-hcd.h +++ b/drivers/usb/c67x00/c67x00-hcd.h @@ -28,7 +28,7 @@ #include #include #include -#include "../core/hcd.h" +#include #include "c67x00.h" /* diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index 3ba2fff71490..2c6965484fe8 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -14,7 +14,7 @@ #include #include #include -#include "hcd.h" +#include /* diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 0d3af6a6ee49..77e0dda3a2fb 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -1,12 +1,13 @@ #include #include +#include #include #include #include #include #include #include "usb.h" -#include "hcd.h" + #define USB_MAXALTSETTING 128 /* Hard limit */ #define USB_MAXENDPOINTS 30 /* Hard limit */ diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 19bc03a9fecf..75077215a8b8 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -55,11 +55,11 @@ #include #include #include +#include #include #include #include "usb.h" -#include "hcd.h" /* Define ALLOW_SERIAL_NUMBER if you want to see the serial number of devices */ #define ALLOW_SERIAL_NUMBER diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 3466fdc5bb11..c2f62a3993d2 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -43,6 +43,7 @@ #include #include #include +#include /* for usbcore internals */ #include #include #include @@ -50,9 +51,7 @@ #include #include -#include "hcd.h" /* for usbcore internals */ #include "usb.h" -#include "hub.h" #define USB_MAXBUS 64 #define USB_DEVICE_MAX USB_MAXBUS * 128 diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 2f3dc4cdf79b..edff55a32575 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -26,8 +26,9 @@ #include #include #include +#include #include -#include "hcd.h" + #include "usb.h" diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 2c95153c0f24..9a34ccb0a1c0 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -18,8 +18,8 @@ */ #include +#include #include "usb.h" -#include "hcd.h" static inline const char *plural(int n) { diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 15286533c15a..1cf2d1e79a5c 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -33,7 +34,6 @@ #endif #include "usb.h" -#include "hcd.h" /* PCI-based HCs are common, but plenty of non-PCI HCs are used too */ diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 2f8cedda8007..4a24843cfc61 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -42,10 +42,9 @@ #include #include +#include #include "usb.h" -#include "hcd.h" -#include "hub.h" /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h deleted file mode 100644 index a3cdb09734ab..000000000000 --- a/drivers/usb/core/hcd.h +++ /dev/null @@ -1,578 +0,0 @@ -/* - * Copyright (c) 2001-2002 by David Brownell - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef __USB_CORE_HCD_H -#define __USB_CORE_HCD_H - -#ifdef __KERNEL__ - -#include - -#define MAX_TOPO_LEVEL 6 - -/* This file contains declarations of usbcore internals that are mostly - * used or exposed by Host Controller Drivers. - */ - -/* - * USB Packet IDs (PIDs) - */ -#define USB_PID_EXT 0xf0 /* USB 2.0 LPM ECN */ -#define USB_PID_OUT 0xe1 -#define USB_PID_ACK 0xd2 -#define USB_PID_DATA0 0xc3 -#define USB_PID_PING 0xb4 /* USB 2.0 */ -#define USB_PID_SOF 0xa5 -#define USB_PID_NYET 0x96 /* USB 2.0 */ -#define USB_PID_DATA2 0x87 /* USB 2.0 */ -#define USB_PID_SPLIT 0x78 /* USB 2.0 */ -#define USB_PID_IN 0x69 -#define USB_PID_NAK 0x5a -#define USB_PID_DATA1 0x4b -#define USB_PID_PREAMBLE 0x3c /* Token mode */ -#define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */ -#define USB_PID_SETUP 0x2d -#define USB_PID_STALL 0x1e -#define USB_PID_MDATA 0x0f /* USB 2.0 */ - -/*-------------------------------------------------------------------------*/ - -/* - * USB Host Controller Driver (usb_hcd) framework - * - * Since "struct usb_bus" is so thin, you can't share much code in it. - * This framework is a layer over that, and should be more sharable. - * - * @authorized_default: Specifies if new devices are authorized to - * connect by default or they require explicit - * user space authorization; this bit is settable - * through /sys/class/usb_host/X/authorized_default. - * For the rest is RO, so we don't lock to r/w it. - */ - -/*-------------------------------------------------------------------------*/ - -struct usb_hcd { - - /* - * housekeeping - */ - struct usb_bus self; /* hcd is-a bus */ - struct kref kref; /* reference counter */ - - const char *product_desc; /* product/vendor string */ - char irq_descr[24]; /* driver + bus # */ - - struct timer_list rh_timer; /* drives root-hub polling */ - struct urb *status_urb; /* the current status urb */ -#ifdef CONFIG_USB_SUSPEND - struct work_struct wakeup_work; /* for remote wakeup */ -#endif - - /* - * hardware info/state - */ - const struct hc_driver *driver; /* hw-specific hooks */ - - /* Flags that need to be manipulated atomically */ - unsigned long flags; -#define HCD_FLAG_HW_ACCESSIBLE 0x00000001 -#define HCD_FLAG_SAW_IRQ 0x00000002 - - unsigned rh_registered:1;/* is root hub registered? */ - - /* The next flag is a stopgap, to be removed when all the HCDs - * support the new root-hub polling mechanism. */ - unsigned uses_new_polling:1; - unsigned poll_rh:1; /* poll for rh status? */ - unsigned poll_pending:1; /* status has changed? */ - unsigned wireless:1; /* Wireless USB HCD */ - unsigned authorized_default:1; - unsigned has_tt:1; /* Integrated TT in root hub */ - - int irq; /* irq allocated */ - void __iomem *regs; /* device memory/io */ - u64 rsrc_start; /* memory/io resource start */ - u64 rsrc_len; /* memory/io resource length */ - unsigned power_budget; /* in mA, 0 = no limit */ - - /* bandwidth_mutex should be taken before adding or removing - * any new bus bandwidth constraints: - * 1. Before adding a configuration for a new device. - * 2. Before removing the configuration to put the device into - * the addressed state. - * 3. Before selecting a different configuration. - * 4. Before selecting an alternate interface setting. - * - * bandwidth_mutex should be dropped after a successful control message - * to the device, or resetting the bandwidth after a failed attempt. - */ - struct mutex bandwidth_mutex; - - -#define HCD_BUFFER_POOLS 4 - struct dma_pool *pool [HCD_BUFFER_POOLS]; - - int state; -# define __ACTIVE 0x01 -# define __SUSPEND 0x04 -# define __TRANSIENT 0x80 - -# define HC_STATE_HALT 0 -# define HC_STATE_RUNNING (__ACTIVE) -# define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE) -# define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT) -# define HC_STATE_SUSPENDED (__SUSPEND) - -#define HC_IS_RUNNING(state) ((state) & __ACTIVE) -#define HC_IS_SUSPENDED(state) ((state) & __SUSPEND) - - /* more shared queuing code would be good; it should support - * smarter scheduling, handle transaction translators, etc; - * input size of periodic table to an interrupt scheduler. - * (ohci 32, uhci 1024, ehci 256/512/1024). - */ - - /* The HC driver's private data is stored at the end of - * this structure. - */ - unsigned long hcd_priv[0] - __attribute__ ((aligned(sizeof(unsigned long)))); -}; - -/* 2.4 does this a bit differently ... */ -static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd) -{ - return &hcd->self; -} - -static inline struct usb_hcd *bus_to_hcd(struct usb_bus *bus) -{ - return container_of(bus, struct usb_hcd, self); -} - -struct hcd_timeout { /* timeouts we allocate */ - struct list_head timeout_list; - struct timer_list timer; -}; - -/*-------------------------------------------------------------------------*/ - - -struct hc_driver { - const char *description; /* "ehci-hcd" etc */ - const char *product_desc; /* product/vendor string */ - size_t hcd_priv_size; /* size of private data */ - - /* irq handler */ - irqreturn_t (*irq) (struct usb_hcd *hcd); - - int flags; -#define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */ -#define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ -#define HCD_USB11 0x0010 /* USB 1.1 */ -#define HCD_USB2 0x0020 /* USB 2.0 */ -#define HCD_USB3 0x0040 /* USB 3.0 */ -#define HCD_MASK 0x0070 - - /* called to init HCD and root hub */ - int (*reset) (struct usb_hcd *hcd); - int (*start) (struct usb_hcd *hcd); - - /* NOTE: these suspend/resume calls relate to the HC as - * a whole, not just the root hub; they're for PCI bus glue. - */ - /* called after suspending the hub, before entering D3 etc */ - int (*pci_suspend)(struct usb_hcd *hcd); - - /* called after entering D0 (etc), before resuming the hub */ - int (*pci_resume)(struct usb_hcd *hcd, bool hibernated); - - /* cleanly make HCD stop writing memory and doing I/O */ - void (*stop) (struct usb_hcd *hcd); - - /* shutdown HCD */ - void (*shutdown) (struct usb_hcd *hcd); - - /* return current frame number */ - int (*get_frame_number) (struct usb_hcd *hcd); - - /* manage i/o requests, device state */ - int (*urb_enqueue)(struct usb_hcd *hcd, - struct urb *urb, gfp_t mem_flags); - int (*urb_dequeue)(struct usb_hcd *hcd, - struct urb *urb, int status); - - /* hw synch, freeing endpoint resources that urb_dequeue can't */ - void (*endpoint_disable)(struct usb_hcd *hcd, - struct usb_host_endpoint *ep); - - /* (optional) reset any endpoint state such as sequence number - and current window */ - void (*endpoint_reset)(struct usb_hcd *hcd, - struct usb_host_endpoint *ep); - - /* root hub support */ - int (*hub_status_data) (struct usb_hcd *hcd, char *buf); - int (*hub_control) (struct usb_hcd *hcd, - u16 typeReq, u16 wValue, u16 wIndex, - char *buf, u16 wLength); - int (*bus_suspend)(struct usb_hcd *); - int (*bus_resume)(struct usb_hcd *); - int (*start_port_reset)(struct usb_hcd *, unsigned port_num); - - /* force handover of high-speed port to full-speed companion */ - void (*relinquish_port)(struct usb_hcd *, int); - /* has a port been handed over to a companion? */ - int (*port_handed_over)(struct usb_hcd *, int); - - /* CLEAR_TT_BUFFER completion callback */ - void (*clear_tt_buffer_complete)(struct usb_hcd *, - struct usb_host_endpoint *); - - /* xHCI specific functions */ - /* Called by usb_alloc_dev to alloc HC device structures */ - int (*alloc_dev)(struct usb_hcd *, struct usb_device *); - /* Called by usb_disconnect to free HC device structures */ - void (*free_dev)(struct usb_hcd *, struct usb_device *); - - /* Bandwidth computation functions */ - /* Note that add_endpoint() can only be called once per endpoint before - * check_bandwidth() or reset_bandwidth() must be called. - * drop_endpoint() can only be called once per endpoint also. - * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will - * add the endpoint to the schedule with possibly new parameters denoted by a - * different endpoint descriptor in usb_host_endpoint. - * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is - * not allowed. - */ - /* Allocate endpoint resources and add them to a new schedule */ - int (*add_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); - /* Drop an endpoint from a new schedule */ - int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); - /* Check that a new hardware configuration, set using - * endpoint_enable and endpoint_disable, does not exceed bus - * bandwidth. This must be called before any set configuration - * or set interface requests are sent to the device. - */ - int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); - /* Reset the device schedule to the last known good schedule, - * which was set from a previous successful call to - * check_bandwidth(). This reverts any add_endpoint() and - * drop_endpoint() calls since that last successful call. - * Used for when a check_bandwidth() call fails due to resource - * or bandwidth constraints. - */ - void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); - /* Returns the hardware-chosen device address */ - int (*address_device)(struct usb_hcd *, struct usb_device *udev); - /* Notifies the HCD after a hub descriptor is fetched. - * Will block. - */ - int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev, - struct usb_tt *tt, gfp_t mem_flags); - int (*reset_device)(struct usb_hcd *, struct usb_device *); -}; - -extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); -extern int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb, - int status); -extern void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb); - -extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags); -extern int usb_hcd_unlink_urb(struct urb *urb, int status); -extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, - int status); -extern void usb_hcd_flush_endpoint(struct usb_device *udev, - struct usb_host_endpoint *ep); -extern void usb_hcd_disable_endpoint(struct usb_device *udev, - struct usb_host_endpoint *ep); -extern void usb_hcd_reset_endpoint(struct usb_device *udev, - struct usb_host_endpoint *ep); -extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); -extern int usb_hcd_alloc_bandwidth(struct usb_device *udev, - struct usb_host_config *new_config, - struct usb_host_interface *old_alt, - struct usb_host_interface *new_alt); -extern int usb_hcd_get_frame_number(struct usb_device *udev); - -extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, - struct device *dev, const char *bus_name); -extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd); -extern void usb_put_hcd(struct usb_hcd *hcd); -extern int usb_add_hcd(struct usb_hcd *hcd, - unsigned int irqnum, unsigned long irqflags); -extern void usb_remove_hcd(struct usb_hcd *hcd); - -struct platform_device; -extern void usb_hcd_platform_shutdown(struct platform_device *dev); - -#ifdef CONFIG_PCI -struct pci_dev; -struct pci_device_id; -extern int usb_hcd_pci_probe(struct pci_dev *dev, - const struct pci_device_id *id); -extern void usb_hcd_pci_remove(struct pci_dev *dev); -extern void usb_hcd_pci_shutdown(struct pci_dev *dev); - -#ifdef CONFIG_PM_SLEEP -extern const struct dev_pm_ops usb_hcd_pci_pm_ops; -#endif -#endif /* CONFIG_PCI */ - -/* pci-ish (pdev null is ok) buffer alloc/mapping support */ -int hcd_buffer_create(struct usb_hcd *hcd); -void hcd_buffer_destroy(struct usb_hcd *hcd); - -void *hcd_buffer_alloc(struct usb_bus *bus, size_t size, - gfp_t mem_flags, dma_addr_t *dma); -void hcd_buffer_free(struct usb_bus *bus, size_t size, - void *addr, dma_addr_t dma); - -/* generic bus glue, needed for host controllers that don't use PCI */ -extern irqreturn_t usb_hcd_irq(int irq, void *__hcd); - -extern void usb_hc_died(struct usb_hcd *hcd); -extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); - -/* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */ -#define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1) -#define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep))) -#define usb_settoggle(dev, ep, out, bit) \ - ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \ - ((bit) << (ep))) - -/* -------------------------------------------------------------------------- */ - -/* Enumeration is only for the hub driver, or HCD virtual root hubs */ -extern struct usb_device *usb_alloc_dev(struct usb_device *parent, - struct usb_bus *, unsigned port); -extern int usb_new_device(struct usb_device *dev); -extern void usb_disconnect(struct usb_device **); - -extern int usb_get_configuration(struct usb_device *dev); -extern void usb_destroy_configuration(struct usb_device *dev); - -/*-------------------------------------------------------------------------*/ - -/* - * HCD Root Hub support - */ - -#include "hub.h" - -/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */ -#define DeviceRequest \ - ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) -#define DeviceOutRequest \ - ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) - -#define InterfaceRequest \ - ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) - -#define EndpointRequest \ - ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) -#define EndpointOutRequest \ - ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) - -/* class requests from the USB 2.0 hub spec, table 11-15 */ -/* GetBusState and SetHubDescriptor are optional, omitted */ -#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) -#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) -#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) -#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) -#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) -#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) -#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) - - -/*-------------------------------------------------------------------------*/ - -/* - * Generic bandwidth allocation constants/support - */ -#define FRAME_TIME_USECS 1000L -#define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */ - /* Trying not to use worst-case bit-stuffing - * of (7/6 * 8 * bytecount) = 9.33 * bytecount */ - /* bytecount = data payload byte count */ - -#define NS_TO_US(ns) ((ns + 500L) / 1000L) - /* convert & round nanoseconds to microseconds */ - - -/* - * Full/low speed bandwidth allocation constants/support. - */ -#define BW_HOST_DELAY 1000L /* nanoseconds */ -#define BW_HUB_LS_SETUP 333L /* nanoseconds */ - /* 4 full-speed bit times (est.) */ - -#define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */ -#define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L) -#define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L) - -/* - * Ceiling [nano/micro]seconds (typical) for that many bytes at high speed - * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed - * to preallocate bandwidth) - */ -#define USB2_HOST_DELAY 5 /* nsec, guess */ -#define HS_NSECS(bytes) (((55 * 8 * 2083) \ - + (2083UL * (3 + BitTime(bytes))))/1000 \ - + USB2_HOST_DELAY) -#define HS_NSECS_ISO(bytes) (((38 * 8 * 2083) \ - + (2083UL * (3 + BitTime(bytes))))/1000 \ - + USB2_HOST_DELAY) -#define HS_USECS(bytes) NS_TO_US (HS_NSECS(bytes)) -#define HS_USECS_ISO(bytes) NS_TO_US (HS_NSECS_ISO(bytes)) - -extern long usb_calc_bus_time(int speed, int is_input, - int isoc, int bytecount); - -/*-------------------------------------------------------------------------*/ - -extern void usb_set_device_state(struct usb_device *udev, - enum usb_device_state new_state); - -/*-------------------------------------------------------------------------*/ - -/* exported only within usbcore */ - -extern struct list_head usb_bus_list; -extern struct mutex usb_bus_list_lock; -extern wait_queue_head_t usb_kill_urb_queue; - -extern int usb_find_interface_driver(struct usb_device *dev, - struct usb_interface *interface); - -#define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) - -#ifdef CONFIG_PM -extern void usb_root_hub_lost_power(struct usb_device *rhdev); -extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); -extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); -#endif /* CONFIG_PM */ - -#ifdef CONFIG_USB_SUSPEND -extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); -#else -static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) -{ - return; -} -#endif /* CONFIG_USB_SUSPEND */ - - -/* - * USB device fs stuff - */ - -#ifdef CONFIG_USB_DEVICEFS - -/* - * these are expected to be called from the USB core/hub thread - * with the kernel lock held - */ -extern void usbfs_update_special(void); -extern int usbfs_init(void); -extern void usbfs_cleanup(void); - -#else /* CONFIG_USB_DEVICEFS */ - -static inline void usbfs_update_special(void) {} -static inline int usbfs_init(void) { return 0; } -static inline void usbfs_cleanup(void) { } - -#endif /* CONFIG_USB_DEVICEFS */ - -/*-------------------------------------------------------------------------*/ - -#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) - -struct usb_mon_operations { - void (*urb_submit)(struct usb_bus *bus, struct urb *urb); - void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err); - void (*urb_complete)(struct usb_bus *bus, struct urb *urb, int status); - /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */ -}; - -extern struct usb_mon_operations *mon_ops; - -static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) -{ - if (bus->monitored) - (*mon_ops->urb_submit)(bus, urb); -} - -static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, - int error) -{ - if (bus->monitored) - (*mon_ops->urb_submit_error)(bus, urb, error); -} - -static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, - int status) -{ - if (bus->monitored) - (*mon_ops->urb_complete)(bus, urb, status); -} - -int usb_mon_register(struct usb_mon_operations *ops); -void usb_mon_deregister(void); - -#else - -static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {} -static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, - int error) {} -static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, - int status) {} - -#endif /* CONFIG_USB_MON || CONFIG_USB_MON_MODULE */ - -/*-------------------------------------------------------------------------*/ - -/* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */ -/* bleech -- resurfaced in 2.4.11 or 2.4.12 */ -#define bitmap DeviceRemovable - - -/*-------------------------------------------------------------------------*/ - -/* random stuff */ - -#define RUN_CONTEXT (in_irq() ? "in_irq" \ - : (in_interrupt() ? "in_interrupt" : "can sleep")) - - -/* This rwsem is for use only by the hub driver and ehci-hcd. - * Nobody else should touch it. - */ -extern struct rw_semaphore ehci_cf_port_reset_rwsem; - -/* Keep track of which host controller drivers are loaded */ -#define USB_UHCI_LOADED 0 -#define USB_OHCI_LOADED 1 -#define USB_EHCI_LOADED 2 -extern unsigned long usb_hcds_loaded; - -#endif /* __KERNEL__ */ - -#endif /* __USB_CORE_HCD_H */ diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 0940ccd6f4f4..1883c3c7b69b 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -28,8 +29,6 @@ #include #include "usb.h" -#include "hcd.h" -#include "hub.h" /* if we are in debug mode, always announce new devices */ #ifdef DEBUG diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index 111a01a747fc..1a27618b67d6 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -40,9 +40,9 @@ #include #include #include +#include #include #include "usb.h" -#include "hcd.h" #define USBFS_DEFAULT_DEVMODE (S_IWUSR | S_IRUGO) #define USBFS_DEFAULT_BUSMODE (S_IXUGO | S_IRUGO) diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index cd220277c6c3..619c44fb8a96 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -14,9 +14,9 @@ #include #include #include +#include /* for usbcore internals */ #include -#include "hcd.h" /* for usbcore internals */ #include "usb.h" static void cancel_async_set_config(struct usb_device *udev); diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 45a32dadb406..09301f4b7225 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -6,7 +6,7 @@ #include #include #include -#include "hcd.h" +#include #define to_urb(d) container_of(d, struct urb, kref) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 0561430f2ede..1088abb4416c 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -41,7 +42,6 @@ #include #include -#include "hcd.h" #include "usb.h" diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 5e0966485188..4f9e578cde9d 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include @@ -55,9 +56,6 @@ #include -#include "../core/hcd.h" - - #define DRIVER_DESC "USB Host+Gadget Emulator" #define DRIVER_VERSION "02 May 2005" diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 13ead00aecd5..ef3e88f0b3c3 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -31,13 +31,12 @@ #include #include #include +#include #include #include #include #include -#include "../core/hcd.h" - #include #include #include diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c index e799f86dab11..6fe550049119 100644 --- a/drivers/usb/host/fhci-dbg.c +++ b/drivers/usb/host/fhci-dbg.c @@ -20,7 +20,7 @@ #include #include #include -#include "../core/hcd.h" +#include #include "fhci.h" void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c index 15379c636143..90453379a434 100644 --- a/drivers/usb/host/fhci-hcd.c +++ b/drivers/usb/host/fhci-hcd.c @@ -25,12 +25,12 @@ #include #include #include +#include #include #include #include #include #include -#include "../core/hcd.h" #include "fhci.h" void fhci_start_sof_timer(struct fhci_hcd *fhci) diff --git a/drivers/usb/host/fhci-hub.c b/drivers/usb/host/fhci-hub.c index 0cfaedc3e124..348fe62e94f7 100644 --- a/drivers/usb/host/fhci-hub.c +++ b/drivers/usb/host/fhci-hub.c @@ -22,9 +22,9 @@ #include #include #include +#include #include #include -#include "../core/hcd.h" #include "fhci.h" /* virtual root hub specific descriptor */ diff --git a/drivers/usb/host/fhci-mem.c b/drivers/usb/host/fhci-mem.c index 5591bfb499d1..b0b88f57a5ac 100644 --- a/drivers/usb/host/fhci-mem.c +++ b/drivers/usb/host/fhci-mem.c @@ -21,7 +21,7 @@ #include #include #include -#include "../core/hcd.h" +#include #include "fhci.h" static void init_td(struct td *td) diff --git a/drivers/usb/host/fhci-q.c b/drivers/usb/host/fhci-q.c index f73c92359beb..03be7494a476 100644 --- a/drivers/usb/host/fhci-q.c +++ b/drivers/usb/host/fhci-q.c @@ -22,7 +22,7 @@ #include #include #include -#include "../core/hcd.h" +#include #include "fhci.h" /* maps the hardware error code to the USB error code */ diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c index ff43747a614f..4f2cbdcc0273 100644 --- a/drivers/usb/host/fhci-sched.c +++ b/drivers/usb/host/fhci-sched.c @@ -24,9 +24,9 @@ #include #include #include +#include #include #include -#include "../core/hcd.h" #include "fhci.h" static void recycle_frame(struct fhci_usb *usb, struct packet *pkt) diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c index 57013479d7f7..7be548ca2183 100644 --- a/drivers/usb/host/fhci-tds.c +++ b/drivers/usb/host/fhci-tds.c @@ -22,7 +22,7 @@ #include #include #include -#include "../core/hcd.h" +#include #include "fhci.h" #define DUMMY_BD_BUFFER 0xdeadbeef diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h index 72dae1c5ab38..649ab07308f2 100644 --- a/drivers/usb/host/fhci.h +++ b/drivers/usb/host/fhci.h @@ -25,8 +25,8 @@ #include #include #include +#include #include -#include "../core/hcd.h" #define USB_CLOCK 48000000 diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index 8a12f297645f..ca0e98d8e1f4 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -56,8 +56,8 @@ #include #include #include +#include -#include "../core/hcd.h" #include "imx21-hcd.h" #ifdef DEBUG diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 92de71dc7729..d9e82123de2a 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -65,6 +65,7 @@ #include #include #include +#include #include #include @@ -72,7 +73,6 @@ #include #include -#include "../core/hcd.h" #include "isp116x.h" #define DRIVER_VERSION "03 Nov 2005" diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c index 217fb5170200..acc157da7275 100644 --- a/drivers/usb/host/isp1362-hcd.c +++ b/drivers/usb/host/isp1362-hcd.c @@ -77,6 +77,7 @@ #include #include #include +#include #include #include #include @@ -95,7 +96,6 @@ module_param(dbg_level, int, 0); #define STUB_DEBUG_FILE #endif -#include "../core/hcd.h" #include "../core/usb.h" #include "isp1362.h" diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 9f01293600b0..c7ac1d97d176 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -21,7 +22,6 @@ #include #include -#include "../core/hcd.h" #include "isp1760-hcd.h" static struct kmem_cache *qtd_cachep; diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index 4293cfd28d61..42a094605c92 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -13,8 +13,8 @@ #include #include #include +#include -#include "../core/hcd.h" #include "isp1760-hcd.h" #ifdef CONFIG_PPC_OF diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index afe59be23645..d15d2478493e 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -43,7 +44,6 @@ #include #include -#include "../core/hcd.h" #define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell" #define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver" diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index e62b30b3e429..2891203200ce 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -34,12 +34,11 @@ #include #include #include +#include #include #include #include -#include "../core/hcd.h" - #include #include #include diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index d478ffad59b4..1398de140ead 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -40,7 +41,6 @@ #include #include -#include "../core/hcd.h" #include "r8a66597.h" MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index 3b867a8af7b2..8f2f477890c4 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include @@ -53,7 +54,6 @@ #include #include -#include "../core/hcd.h" #include "sl811.h" diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 228f2b070f2b..fbd7adafd61c 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include #include @@ -56,7 +57,6 @@ #include #include #include -#include "../core/hcd.h" /* FIXME ohci.h is ONLY for internal use by the OHCI driver. * If you're going to try stuff like this, you need to split diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 09197067fe6b..6637e52736dd 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include @@ -46,7 +47,6 @@ #include #include -#include "../core/hcd.h" #include "uhci-hcd.h" #include "pci-quirks.h" diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index ea389e9a4931..a7c4e1122902 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -26,8 +26,8 @@ #include #include #include +#include -#include "../core/hcd.h" /* Code sharing between pci-quirks and xhci hcd */ #include "xhci-ext-caps.h" diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 1edb6d361896..2300a51d48b7 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -73,7 +73,7 @@ static struct list_head ftdi_static_list; */ #include "usb_u132.h" #include -#include "../core/hcd.h" +#include /* FIXME ohci.h is ONLY for internal use by the OHCI driver. * If you're going to try stuff like this, you need to split diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c index e4af18b93c7d..812dc288bb8c 100644 --- a/drivers/usb/mon/mon_main.c +++ b/drivers/usb/mon/mon_main.c @@ -9,12 +9,13 @@ #include #include #include +#include #include #include #include #include "usb_mon.h" -#include "../core/hcd.h" + static void mon_stop(struct mon_bus *mbus); static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index ac17b004909b..1da14bf17a65 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -69,7 +69,7 @@ struct musb_ep; #include "musb_regs.h" #include "musb_gadget.h" -#include "../core/hcd.h" +#include #include "musb_host.h" diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h index 759cda55f7c3..3d94c4247f46 100644 --- a/drivers/usb/wusbcore/wusbhc.h +++ b/drivers/usb/wusbcore/wusbhc.h @@ -58,9 +58,7 @@ #include #include #include -/* FIXME: Yes, I know: BAD--it's not my fault the USB HC iface is not - * public */ -#include +#include #include #include diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h new file mode 100644 index 000000000000..c7e575cb3149 --- /dev/null +++ b/include/linux/usb/hcd.h @@ -0,0 +1,578 @@ +/* + * Copyright (c) 2001-2002 by David Brownell + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __USB_CORE_HCD_H +#define __USB_CORE_HCD_H + +#ifdef __KERNEL__ + +#include + +#define MAX_TOPO_LEVEL 6 + +/* This file contains declarations of usbcore internals that are mostly + * used or exposed by Host Controller Drivers. + */ + +/* + * USB Packet IDs (PIDs) + */ +#define USB_PID_EXT 0xf0 /* USB 2.0 LPM ECN */ +#define USB_PID_OUT 0xe1 +#define USB_PID_ACK 0xd2 +#define USB_PID_DATA0 0xc3 +#define USB_PID_PING 0xb4 /* USB 2.0 */ +#define USB_PID_SOF 0xa5 +#define USB_PID_NYET 0x96 /* USB 2.0 */ +#define USB_PID_DATA2 0x87 /* USB 2.0 */ +#define USB_PID_SPLIT 0x78 /* USB 2.0 */ +#define USB_PID_IN 0x69 +#define USB_PID_NAK 0x5a +#define USB_PID_DATA1 0x4b +#define USB_PID_PREAMBLE 0x3c /* Token mode */ +#define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */ +#define USB_PID_SETUP 0x2d +#define USB_PID_STALL 0x1e +#define USB_PID_MDATA 0x0f /* USB 2.0 */ + +/*-------------------------------------------------------------------------*/ + +/* + * USB Host Controller Driver (usb_hcd) framework + * + * Since "struct usb_bus" is so thin, you can't share much code in it. + * This framework is a layer over that, and should be more sharable. + * + * @authorized_default: Specifies if new devices are authorized to + * connect by default or they require explicit + * user space authorization; this bit is settable + * through /sys/class/usb_host/X/authorized_default. + * For the rest is RO, so we don't lock to r/w it. + */ + +/*-------------------------------------------------------------------------*/ + +struct usb_hcd { + + /* + * housekeeping + */ + struct usb_bus self; /* hcd is-a bus */ + struct kref kref; /* reference counter */ + + const char *product_desc; /* product/vendor string */ + char irq_descr[24]; /* driver + bus # */ + + struct timer_list rh_timer; /* drives root-hub polling */ + struct urb *status_urb; /* the current status urb */ +#ifdef CONFIG_USB_SUSPEND + struct work_struct wakeup_work; /* for remote wakeup */ +#endif + + /* + * hardware info/state + */ + const struct hc_driver *driver; /* hw-specific hooks */ + + /* Flags that need to be manipulated atomically */ + unsigned long flags; +#define HCD_FLAG_HW_ACCESSIBLE 0x00000001 +#define HCD_FLAG_SAW_IRQ 0x00000002 + + unsigned rh_registered:1;/* is root hub registered? */ + + /* The next flag is a stopgap, to be removed when all the HCDs + * support the new root-hub polling mechanism. */ + unsigned uses_new_polling:1; + unsigned poll_rh:1; /* poll for rh status? */ + unsigned poll_pending:1; /* status has changed? */ + unsigned wireless:1; /* Wireless USB HCD */ + unsigned authorized_default:1; + unsigned has_tt:1; /* Integrated TT in root hub */ + + int irq; /* irq allocated */ + void __iomem *regs; /* device memory/io */ + u64 rsrc_start; /* memory/io resource start */ + u64 rsrc_len; /* memory/io resource length */ + unsigned power_budget; /* in mA, 0 = no limit */ + + /* bandwidth_mutex should be taken before adding or removing + * any new bus bandwidth constraints: + * 1. Before adding a configuration for a new device. + * 2. Before removing the configuration to put the device into + * the addressed state. + * 3. Before selecting a different configuration. + * 4. Before selecting an alternate interface setting. + * + * bandwidth_mutex should be dropped after a successful control message + * to the device, or resetting the bandwidth after a failed attempt. + */ + struct mutex bandwidth_mutex; + + +#define HCD_BUFFER_POOLS 4 + struct dma_pool *pool [HCD_BUFFER_POOLS]; + + int state; +# define __ACTIVE 0x01 +# define __SUSPEND 0x04 +# define __TRANSIENT 0x80 + +# define HC_STATE_HALT 0 +# define HC_STATE_RUNNING (__ACTIVE) +# define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE) +# define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT) +# define HC_STATE_SUSPENDED (__SUSPEND) + +#define HC_IS_RUNNING(state) ((state) & __ACTIVE) +#define HC_IS_SUSPENDED(state) ((state) & __SUSPEND) + + /* more shared queuing code would be good; it should support + * smarter scheduling, handle transaction translators, etc; + * input size of periodic table to an interrupt scheduler. + * (ohci 32, uhci 1024, ehci 256/512/1024). + */ + + /* The HC driver's private data is stored at the end of + * this structure. + */ + unsigned long hcd_priv[0] + __attribute__ ((aligned(sizeof(unsigned long)))); +}; + +/* 2.4 does this a bit differently ... */ +static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd) +{ + return &hcd->self; +} + +static inline struct usb_hcd *bus_to_hcd(struct usb_bus *bus) +{ + return container_of(bus, struct usb_hcd, self); +} + +struct hcd_timeout { /* timeouts we allocate */ + struct list_head timeout_list; + struct timer_list timer; +}; + +/*-------------------------------------------------------------------------*/ + + +struct hc_driver { + const char *description; /* "ehci-hcd" etc */ + const char *product_desc; /* product/vendor string */ + size_t hcd_priv_size; /* size of private data */ + + /* irq handler */ + irqreturn_t (*irq) (struct usb_hcd *hcd); + + int flags; +#define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */ +#define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ +#define HCD_USB11 0x0010 /* USB 1.1 */ +#define HCD_USB2 0x0020 /* USB 2.0 */ +#define HCD_USB3 0x0040 /* USB 3.0 */ +#define HCD_MASK 0x0070 + + /* called to init HCD and root hub */ + int (*reset) (struct usb_hcd *hcd); + int (*start) (struct usb_hcd *hcd); + + /* NOTE: these suspend/resume calls relate to the HC as + * a whole, not just the root hub; they're for PCI bus glue. + */ + /* called after suspending the hub, before entering D3 etc */ + int (*pci_suspend)(struct usb_hcd *hcd); + + /* called after entering D0 (etc), before resuming the hub */ + int (*pci_resume)(struct usb_hcd *hcd, bool hibernated); + + /* cleanly make HCD stop writing memory and doing I/O */ + void (*stop) (struct usb_hcd *hcd); + + /* shutdown HCD */ + void (*shutdown) (struct usb_hcd *hcd); + + /* return current frame number */ + int (*get_frame_number) (struct usb_hcd *hcd); + + /* manage i/o requests, device state */ + int (*urb_enqueue)(struct usb_hcd *hcd, + struct urb *urb, gfp_t mem_flags); + int (*urb_dequeue)(struct usb_hcd *hcd, + struct urb *urb, int status); + + /* hw synch, freeing endpoint resources that urb_dequeue can't */ + void (*endpoint_disable)(struct usb_hcd *hcd, + struct usb_host_endpoint *ep); + + /* (optional) reset any endpoint state such as sequence number + and current window */ + void (*endpoint_reset)(struct usb_hcd *hcd, + struct usb_host_endpoint *ep); + + /* root hub support */ + int (*hub_status_data) (struct usb_hcd *hcd, char *buf); + int (*hub_control) (struct usb_hcd *hcd, + u16 typeReq, u16 wValue, u16 wIndex, + char *buf, u16 wLength); + int (*bus_suspend)(struct usb_hcd *); + int (*bus_resume)(struct usb_hcd *); + int (*start_port_reset)(struct usb_hcd *, unsigned port_num); + + /* force handover of high-speed port to full-speed companion */ + void (*relinquish_port)(struct usb_hcd *, int); + /* has a port been handed over to a companion? */ + int (*port_handed_over)(struct usb_hcd *, int); + + /* CLEAR_TT_BUFFER completion callback */ + void (*clear_tt_buffer_complete)(struct usb_hcd *, + struct usb_host_endpoint *); + + /* xHCI specific functions */ + /* Called by usb_alloc_dev to alloc HC device structures */ + int (*alloc_dev)(struct usb_hcd *, struct usb_device *); + /* Called by usb_disconnect to free HC device structures */ + void (*free_dev)(struct usb_hcd *, struct usb_device *); + + /* Bandwidth computation functions */ + /* Note that add_endpoint() can only be called once per endpoint before + * check_bandwidth() or reset_bandwidth() must be called. + * drop_endpoint() can only be called once per endpoint also. + * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will + * add the endpoint to the schedule with possibly new parameters denoted by a + * different endpoint descriptor in usb_host_endpoint. + * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is + * not allowed. + */ + /* Allocate endpoint resources and add them to a new schedule */ + int (*add_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Drop an endpoint from a new schedule */ + int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Check that a new hardware configuration, set using + * endpoint_enable and endpoint_disable, does not exceed bus + * bandwidth. This must be called before any set configuration + * or set interface requests are sent to the device. + */ + int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Reset the device schedule to the last known good schedule, + * which was set from a previous successful call to + * check_bandwidth(). This reverts any add_endpoint() and + * drop_endpoint() calls since that last successful call. + * Used for when a check_bandwidth() call fails due to resource + * or bandwidth constraints. + */ + void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Returns the hardware-chosen device address */ + int (*address_device)(struct usb_hcd *, struct usb_device *udev); + /* Notifies the HCD after a hub descriptor is fetched. + * Will block. + */ + int (*update_hub_device)(struct usb_hcd *, struct usb_device *hdev, + struct usb_tt *tt, gfp_t mem_flags); + int (*reset_device)(struct usb_hcd *, struct usb_device *); +}; + +extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); +extern int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb, + int status); +extern void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb); + +extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags); +extern int usb_hcd_unlink_urb(struct urb *urb, int status); +extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, + int status); +extern void usb_hcd_flush_endpoint(struct usb_device *udev, + struct usb_host_endpoint *ep); +extern void usb_hcd_disable_endpoint(struct usb_device *udev, + struct usb_host_endpoint *ep); +extern void usb_hcd_reset_endpoint(struct usb_device *udev, + struct usb_host_endpoint *ep); +extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); +extern int usb_hcd_alloc_bandwidth(struct usb_device *udev, + struct usb_host_config *new_config, + struct usb_host_interface *old_alt, + struct usb_host_interface *new_alt); +extern int usb_hcd_get_frame_number(struct usb_device *udev); + +extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, + struct device *dev, const char *bus_name); +extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd); +extern void usb_put_hcd(struct usb_hcd *hcd); +extern int usb_add_hcd(struct usb_hcd *hcd, + unsigned int irqnum, unsigned long irqflags); +extern void usb_remove_hcd(struct usb_hcd *hcd); + +struct platform_device; +extern void usb_hcd_platform_shutdown(struct platform_device *dev); + +#ifdef CONFIG_PCI +struct pci_dev; +struct pci_device_id; +extern int usb_hcd_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id); +extern void usb_hcd_pci_remove(struct pci_dev *dev); +extern void usb_hcd_pci_shutdown(struct pci_dev *dev); + +#ifdef CONFIG_PM_SLEEP +extern const struct dev_pm_ops usb_hcd_pci_pm_ops; +#endif +#endif /* CONFIG_PCI */ + +/* pci-ish (pdev null is ok) buffer alloc/mapping support */ +int hcd_buffer_create(struct usb_hcd *hcd); +void hcd_buffer_destroy(struct usb_hcd *hcd); + +void *hcd_buffer_alloc(struct usb_bus *bus, size_t size, + gfp_t mem_flags, dma_addr_t *dma); +void hcd_buffer_free(struct usb_bus *bus, size_t size, + void *addr, dma_addr_t dma); + +/* generic bus glue, needed for host controllers that don't use PCI */ +extern irqreturn_t usb_hcd_irq(int irq, void *__hcd); + +extern void usb_hc_died(struct usb_hcd *hcd); +extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); + +/* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */ +#define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1) +#define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep))) +#define usb_settoggle(dev, ep, out, bit) \ + ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \ + ((bit) << (ep))) + +/* -------------------------------------------------------------------------- */ + +/* Enumeration is only for the hub driver, or HCD virtual root hubs */ +extern struct usb_device *usb_alloc_dev(struct usb_device *parent, + struct usb_bus *, unsigned port); +extern int usb_new_device(struct usb_device *dev); +extern void usb_disconnect(struct usb_device **); + +extern int usb_get_configuration(struct usb_device *dev); +extern void usb_destroy_configuration(struct usb_device *dev); + +/*-------------------------------------------------------------------------*/ + +/* + * HCD Root Hub support + */ + +#include + +/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */ +#define DeviceRequest \ + ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) +#define DeviceOutRequest \ + ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) + +#define InterfaceRequest \ + ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) + +#define EndpointRequest \ + ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) +#define EndpointOutRequest \ + ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) + +/* class requests from the USB 2.0 hub spec, table 11-15 */ +/* GetBusState and SetHubDescriptor are optional, omitted */ +#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) +#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) +#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) +#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) +#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) +#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) +#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) + + +/*-------------------------------------------------------------------------*/ + +/* + * Generic bandwidth allocation constants/support + */ +#define FRAME_TIME_USECS 1000L +#define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */ + /* Trying not to use worst-case bit-stuffing + * of (7/6 * 8 * bytecount) = 9.33 * bytecount */ + /* bytecount = data payload byte count */ + +#define NS_TO_US(ns) ((ns + 500L) / 1000L) + /* convert & round nanoseconds to microseconds */ + + +/* + * Full/low speed bandwidth allocation constants/support. + */ +#define BW_HOST_DELAY 1000L /* nanoseconds */ +#define BW_HUB_LS_SETUP 333L /* nanoseconds */ + /* 4 full-speed bit times (est.) */ + +#define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */ +#define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L) +#define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L) + +/* + * Ceiling [nano/micro]seconds (typical) for that many bytes at high speed + * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed + * to preallocate bandwidth) + */ +#define USB2_HOST_DELAY 5 /* nsec, guess */ +#define HS_NSECS(bytes) (((55 * 8 * 2083) \ + + (2083UL * (3 + BitTime(bytes))))/1000 \ + + USB2_HOST_DELAY) +#define HS_NSECS_ISO(bytes) (((38 * 8 * 2083) \ + + (2083UL * (3 + BitTime(bytes))))/1000 \ + + USB2_HOST_DELAY) +#define HS_USECS(bytes) NS_TO_US (HS_NSECS(bytes)) +#define HS_USECS_ISO(bytes) NS_TO_US (HS_NSECS_ISO(bytes)) + +extern long usb_calc_bus_time(int speed, int is_input, + int isoc, int bytecount); + +/*-------------------------------------------------------------------------*/ + +extern void usb_set_device_state(struct usb_device *udev, + enum usb_device_state new_state); + +/*-------------------------------------------------------------------------*/ + +/* exported only within usbcore */ + +extern struct list_head usb_bus_list; +extern struct mutex usb_bus_list_lock; +extern wait_queue_head_t usb_kill_urb_queue; + +extern int usb_find_interface_driver(struct usb_device *dev, + struct usb_interface *interface); + +#define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) + +#ifdef CONFIG_PM +extern void usb_root_hub_lost_power(struct usb_device *rhdev); +extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); +extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); +#endif /* CONFIG_PM */ + +#ifdef CONFIG_USB_SUSPEND +extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); +#else +static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) +{ + return; +} +#endif /* CONFIG_USB_SUSPEND */ + + +/* + * USB device fs stuff + */ + +#ifdef CONFIG_USB_DEVICEFS + +/* + * these are expected to be called from the USB core/hub thread + * with the kernel lock held + */ +extern void usbfs_update_special(void); +extern int usbfs_init(void); +extern void usbfs_cleanup(void); + +#else /* CONFIG_USB_DEVICEFS */ + +static inline void usbfs_update_special(void) {} +static inline int usbfs_init(void) { return 0; } +static inline void usbfs_cleanup(void) { } + +#endif /* CONFIG_USB_DEVICEFS */ + +/*-------------------------------------------------------------------------*/ + +#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) + +struct usb_mon_operations { + void (*urb_submit)(struct usb_bus *bus, struct urb *urb); + void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err); + void (*urb_complete)(struct usb_bus *bus, struct urb *urb, int status); + /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */ +}; + +extern struct usb_mon_operations *mon_ops; + +static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) +{ + if (bus->monitored) + (*mon_ops->urb_submit)(bus, urb); +} + +static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, + int error) +{ + if (bus->monitored) + (*mon_ops->urb_submit_error)(bus, urb, error); +} + +static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, + int status) +{ + if (bus->monitored) + (*mon_ops->urb_complete)(bus, urb, status); +} + +int usb_mon_register(struct usb_mon_operations *ops); +void usb_mon_deregister(void); + +#else + +static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {} +static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, + int error) {} +static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, + int status) {} + +#endif /* CONFIG_USB_MON || CONFIG_USB_MON_MODULE */ + +/*-------------------------------------------------------------------------*/ + +/* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */ +/* bleech -- resurfaced in 2.4.11 or 2.4.12 */ +#define bitmap DeviceRemovable + + +/*-------------------------------------------------------------------------*/ + +/* random stuff */ + +#define RUN_CONTEXT (in_irq() ? "in_irq" \ + : (in_interrupt() ? "in_interrupt" : "can sleep")) + + +/* This rwsem is for use only by the hub driver and ehci-hcd. + * Nobody else should touch it. + */ +extern struct rw_semaphore ehci_cf_port_reset_rwsem; + +/* Keep track of which host controller drivers are loaded */ +#define USB_UHCI_LOADED 0 +#define USB_OHCI_LOADED 1 +#define USB_EHCI_LOADED 2 +extern unsigned long usb_hcds_loaded; + +#endif /* __KERNEL__ */ + +#endif /* __USB_CORE_HCD_H */ -- cgit v1.2.3-58-ga151 From d65d7e7ef3dc5e61e4dfaac54ec6d3e97f9a1108 Mon Sep 17 00:00:00 2001 From: Eric Lescouet Date: Sat, 24 Apr 2010 23:34:27 +0200 Subject: USB: make hub.h public (drivers dependency) The usbcore headers: hcd.h and hub.h are shared between usbcore, HCDs and a couple of other drivers (e.g. USBIP modules). So, it makes sense to move them into a more public location and to cleanup dependency of those modules on kernel internal headers. This patch moves hub.h from drivers/usb/core into include/linux/usb/ Signed-of-by: Eric Lescouet Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.h | 205 ------------------------------------------------ include/linux/usb/hcd.h | 2 +- include/linux/usb/hub.h | 205 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 206 insertions(+), 206 deletions(-) delete mode 100644 drivers/usb/core/hub.h create mode 100644 include/linux/usb/hub.h (limited to 'drivers') diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h deleted file mode 100644 index de8081f065ed..000000000000 --- a/drivers/usb/core/hub.h +++ /dev/null @@ -1,205 +0,0 @@ -#ifndef __LINUX_HUB_H -#define __LINUX_HUB_H - -/* - * Hub protocol and driver data structures. - * - * Some of these are known to the "virtual root hub" code - * in host controller drivers. - */ - -#include -#include -#include /* likely()/unlikely() */ - -/* - * Hub request types - */ - -#define USB_RT_HUB (USB_TYPE_CLASS | USB_RECIP_DEVICE) -#define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER) - -/* - * Hub class requests - * See USB 2.0 spec Table 11-16 - */ -#define HUB_CLEAR_TT_BUFFER 8 -#define HUB_RESET_TT 9 -#define HUB_GET_TT_STATE 10 -#define HUB_STOP_TT 11 - -/* - * Hub Class feature numbers - * See USB 2.0 spec Table 11-17 - */ -#define C_HUB_LOCAL_POWER 0 -#define C_HUB_OVER_CURRENT 1 - -/* - * Port feature numbers - * See USB 2.0 spec Table 11-17 - */ -#define USB_PORT_FEAT_CONNECTION 0 -#define USB_PORT_FEAT_ENABLE 1 -#define USB_PORT_FEAT_SUSPEND 2 /* L2 suspend */ -#define USB_PORT_FEAT_OVER_CURRENT 3 -#define USB_PORT_FEAT_RESET 4 -#define USB_PORT_FEAT_L1 5 /* L1 suspend */ -#define USB_PORT_FEAT_POWER 8 -#define USB_PORT_FEAT_LOWSPEED 9 -/* This value was never in Table 11-17 */ -#define USB_PORT_FEAT_HIGHSPEED 10 -/* This value is also fake */ -#define USB_PORT_FEAT_SUPERSPEED 11 -#define USB_PORT_FEAT_C_CONNECTION 16 -#define USB_PORT_FEAT_C_ENABLE 17 -#define USB_PORT_FEAT_C_SUSPEND 18 -#define USB_PORT_FEAT_C_OVER_CURRENT 19 -#define USB_PORT_FEAT_C_RESET 20 -#define USB_PORT_FEAT_TEST 21 -#define USB_PORT_FEAT_INDICATOR 22 -#define USB_PORT_FEAT_C_PORT_L1 23 - -/* - * Hub Status and Hub Change results - * See USB 2.0 spec Table 11-19 and Table 11-20 - */ -struct usb_port_status { - __le16 wPortStatus; - __le16 wPortChange; -} __attribute__ ((packed)); - -/* - * wPortStatus bit field - * See USB 2.0 spec Table 11-21 - */ -#define USB_PORT_STAT_CONNECTION 0x0001 -#define USB_PORT_STAT_ENABLE 0x0002 -#define USB_PORT_STAT_SUSPEND 0x0004 -#define USB_PORT_STAT_OVERCURRENT 0x0008 -#define USB_PORT_STAT_RESET 0x0010 -#define USB_PORT_STAT_L1 0x0020 -/* bits 6 to 7 are reserved */ -#define USB_PORT_STAT_POWER 0x0100 -#define USB_PORT_STAT_LOW_SPEED 0x0200 -#define USB_PORT_STAT_HIGH_SPEED 0x0400 -#define USB_PORT_STAT_TEST 0x0800 -#define USB_PORT_STAT_INDICATOR 0x1000 -/* bits 13 to 15 are reserved */ - -/* - * wPortChange bit field - * See USB 2.0 spec Table 11-22 - * Bits 0 to 4 shown, bits 5 to 15 are reserved - */ -#define USB_PORT_STAT_C_CONNECTION 0x0001 -#define USB_PORT_STAT_C_ENABLE 0x0002 -#define USB_PORT_STAT_C_SUSPEND 0x0004 -#define USB_PORT_STAT_C_OVERCURRENT 0x0008 -#define USB_PORT_STAT_C_RESET 0x0010 -#define USB_PORT_STAT_C_L1 0x0020 - -/* - * wHubCharacteristics (masks) - * See USB 2.0 spec Table 11-13, offset 3 - */ -#define HUB_CHAR_LPSM 0x0003 /* D1 .. D0 */ -#define HUB_CHAR_COMPOUND 0x0004 /* D2 */ -#define HUB_CHAR_OCPM 0x0018 /* D4 .. D3 */ -#define HUB_CHAR_TTTT 0x0060 /* D6 .. D5 */ -#define HUB_CHAR_PORTIND 0x0080 /* D7 */ - -struct usb_hub_status { - __le16 wHubStatus; - __le16 wHubChange; -} __attribute__ ((packed)); - -/* - * Hub Status & Hub Change bit masks - * See USB 2.0 spec Table 11-19 and Table 11-20 - * Bits 0 and 1 for wHubStatus and wHubChange - * Bits 2 to 15 are reserved for both - */ -#define HUB_STATUS_LOCAL_POWER 0x0001 -#define HUB_STATUS_OVERCURRENT 0x0002 -#define HUB_CHANGE_LOCAL_POWER 0x0001 -#define HUB_CHANGE_OVERCURRENT 0x0002 - - -/* - * Hub descriptor - * See USB 2.0 spec Table 11-13 - */ - -#define USB_DT_HUB (USB_TYPE_CLASS | 0x09) -#define USB_DT_HUB_NONVAR_SIZE 7 - -struct usb_hub_descriptor { - __u8 bDescLength; - __u8 bDescriptorType; - __u8 bNbrPorts; - __le16 wHubCharacteristics; - __u8 bPwrOn2PwrGood; - __u8 bHubContrCurrent; - /* add 1 bit for hub status change; round to bytes */ - __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8]; - __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8]; -} __attribute__ ((packed)); - - -/* port indicator status selectors, tables 11-7 and 11-25 */ -#define HUB_LED_AUTO 0 -#define HUB_LED_AMBER 1 -#define HUB_LED_GREEN 2 -#define HUB_LED_OFF 3 - -enum hub_led_mode { - INDICATOR_AUTO = 0, - INDICATOR_CYCLE, - /* software blinks for attention: software, hardware, reserved */ - INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF, - INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF, - INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF -} __attribute__ ((packed)); - -struct usb_device; - -/* Transaction Translator Think Times, in bits */ -#define HUB_TTTT_8_BITS 0x00 -#define HUB_TTTT_16_BITS 0x20 -#define HUB_TTTT_24_BITS 0x40 -#define HUB_TTTT_32_BITS 0x60 - -/* - * As of USB 2.0, full/low speed devices are segregated into trees. - * One type grows from USB 1.1 host controllers (OHCI, UHCI etc). - * The other type grows from high speed hubs when they connect to - * full/low speed devices using "Transaction Translators" (TTs). - * - * TTs should only be known to the hub driver, and high speed bus - * drivers (only EHCI for now). They affect periodic scheduling and - * sometimes control/bulk error recovery. - */ -struct usb_tt { - struct usb_device *hub; /* upstream highspeed hub */ - int multi; /* true means one TT per port */ - unsigned think_time; /* think time in ns */ - - /* for control/bulk error recovery (CLEAR_TT_BUFFER) */ - spinlock_t lock; - struct list_head clear_list; /* of usb_tt_clear */ - struct work_struct clear_work; -}; - -struct usb_tt_clear { - struct list_head clear_list; - unsigned tt; - u16 devinfo; - struct usb_hcd *hcd; - struct usb_host_endpoint *ep; -}; - -extern int usb_hub_clear_tt_buffer(struct urb *urb); -extern void usb_ep0_reinit(struct usb_device *); - -#endif /* __LINUX_HUB_H */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index c7e575cb3149..ca228f00b826 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -374,7 +374,7 @@ extern void usb_destroy_configuration(struct usb_device *dev); * HCD Root Hub support */ -#include +#include /* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */ #define DeviceRequest \ diff --git a/include/linux/usb/hub.h b/include/linux/usb/hub.h new file mode 100644 index 000000000000..de8081f065ed --- /dev/null +++ b/include/linux/usb/hub.h @@ -0,0 +1,205 @@ +#ifndef __LINUX_HUB_H +#define __LINUX_HUB_H + +/* + * Hub protocol and driver data structures. + * + * Some of these are known to the "virtual root hub" code + * in host controller drivers. + */ + +#include +#include +#include /* likely()/unlikely() */ + +/* + * Hub request types + */ + +#define USB_RT_HUB (USB_TYPE_CLASS | USB_RECIP_DEVICE) +#define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER) + +/* + * Hub class requests + * See USB 2.0 spec Table 11-16 + */ +#define HUB_CLEAR_TT_BUFFER 8 +#define HUB_RESET_TT 9 +#define HUB_GET_TT_STATE 10 +#define HUB_STOP_TT 11 + +/* + * Hub Class feature numbers + * See USB 2.0 spec Table 11-17 + */ +#define C_HUB_LOCAL_POWER 0 +#define C_HUB_OVER_CURRENT 1 + +/* + * Port feature numbers + * See USB 2.0 spec Table 11-17 + */ +#define USB_PORT_FEAT_CONNECTION 0 +#define USB_PORT_FEAT_ENABLE 1 +#define USB_PORT_FEAT_SUSPEND 2 /* L2 suspend */ +#define USB_PORT_FEAT_OVER_CURRENT 3 +#define USB_PORT_FEAT_RESET 4 +#define USB_PORT_FEAT_L1 5 /* L1 suspend */ +#define USB_PORT_FEAT_POWER 8 +#define USB_PORT_FEAT_LOWSPEED 9 +/* This value was never in Table 11-17 */ +#define USB_PORT_FEAT_HIGHSPEED 10 +/* This value is also fake */ +#define USB_PORT_FEAT_SUPERSPEED 11 +#define USB_PORT_FEAT_C_CONNECTION 16 +#define USB_PORT_FEAT_C_ENABLE 17 +#define USB_PORT_FEAT_C_SUSPEND 18 +#define USB_PORT_FEAT_C_OVER_CURRENT 19 +#define USB_PORT_FEAT_C_RESET 20 +#define USB_PORT_FEAT_TEST 21 +#define USB_PORT_FEAT_INDICATOR 22 +#define USB_PORT_FEAT_C_PORT_L1 23 + +/* + * Hub Status and Hub Change results + * See USB 2.0 spec Table 11-19 and Table 11-20 + */ +struct usb_port_status { + __le16 wPortStatus; + __le16 wPortChange; +} __attribute__ ((packed)); + +/* + * wPortStatus bit field + * See USB 2.0 spec Table 11-21 + */ +#define USB_PORT_STAT_CONNECTION 0x0001 +#define USB_PORT_STAT_ENABLE 0x0002 +#define USB_PORT_STAT_SUSPEND 0x0004 +#define USB_PORT_STAT_OVERCURRENT 0x0008 +#define USB_PORT_STAT_RESET 0x0010 +#define USB_PORT_STAT_L1 0x0020 +/* bits 6 to 7 are reserved */ +#define USB_PORT_STAT_POWER 0x0100 +#define USB_PORT_STAT_LOW_SPEED 0x0200 +#define USB_PORT_STAT_HIGH_SPEED 0x0400 +#define USB_PORT_STAT_TEST 0x0800 +#define USB_PORT_STAT_INDICATOR 0x1000 +/* bits 13 to 15 are reserved */ + +/* + * wPortChange bit field + * See USB 2.0 spec Table 11-22 + * Bits 0 to 4 shown, bits 5 to 15 are reserved + */ +#define USB_PORT_STAT_C_CONNECTION 0x0001 +#define USB_PORT_STAT_C_ENABLE 0x0002 +#define USB_PORT_STAT_C_SUSPEND 0x0004 +#define USB_PORT_STAT_C_OVERCURRENT 0x0008 +#define USB_PORT_STAT_C_RESET 0x0010 +#define USB_PORT_STAT_C_L1 0x0020 + +/* + * wHubCharacteristics (masks) + * See USB 2.0 spec Table 11-13, offset 3 + */ +#define HUB_CHAR_LPSM 0x0003 /* D1 .. D0 */ +#define HUB_CHAR_COMPOUND 0x0004 /* D2 */ +#define HUB_CHAR_OCPM 0x0018 /* D4 .. D3 */ +#define HUB_CHAR_TTTT 0x0060 /* D6 .. D5 */ +#define HUB_CHAR_PORTIND 0x0080 /* D7 */ + +struct usb_hub_status { + __le16 wHubStatus; + __le16 wHubChange; +} __attribute__ ((packed)); + +/* + * Hub Status & Hub Change bit masks + * See USB 2.0 spec Table 11-19 and Table 11-20 + * Bits 0 and 1 for wHubStatus and wHubChange + * Bits 2 to 15 are reserved for both + */ +#define HUB_STATUS_LOCAL_POWER 0x0001 +#define HUB_STATUS_OVERCURRENT 0x0002 +#define HUB_CHANGE_LOCAL_POWER 0x0001 +#define HUB_CHANGE_OVERCURRENT 0x0002 + + +/* + * Hub descriptor + * See USB 2.0 spec Table 11-13 + */ + +#define USB_DT_HUB (USB_TYPE_CLASS | 0x09) +#define USB_DT_HUB_NONVAR_SIZE 7 + +struct usb_hub_descriptor { + __u8 bDescLength; + __u8 bDescriptorType; + __u8 bNbrPorts; + __le16 wHubCharacteristics; + __u8 bPwrOn2PwrGood; + __u8 bHubContrCurrent; + /* add 1 bit for hub status change; round to bytes */ + __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8]; + __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8]; +} __attribute__ ((packed)); + + +/* port indicator status selectors, tables 11-7 and 11-25 */ +#define HUB_LED_AUTO 0 +#define HUB_LED_AMBER 1 +#define HUB_LED_GREEN 2 +#define HUB_LED_OFF 3 + +enum hub_led_mode { + INDICATOR_AUTO = 0, + INDICATOR_CYCLE, + /* software blinks for attention: software, hardware, reserved */ + INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF, + INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF, + INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF +} __attribute__ ((packed)); + +struct usb_device; + +/* Transaction Translator Think Times, in bits */ +#define HUB_TTTT_8_BITS 0x00 +#define HUB_TTTT_16_BITS 0x20 +#define HUB_TTTT_24_BITS 0x40 +#define HUB_TTTT_32_BITS 0x60 + +/* + * As of USB 2.0, full/low speed devices are segregated into trees. + * One type grows from USB 1.1 host controllers (OHCI, UHCI etc). + * The other type grows from high speed hubs when they connect to + * full/low speed devices using "Transaction Translators" (TTs). + * + * TTs should only be known to the hub driver, and high speed bus + * drivers (only EHCI for now). They affect periodic scheduling and + * sometimes control/bulk error recovery. + */ +struct usb_tt { + struct usb_device *hub; /* upstream highspeed hub */ + int multi; /* true means one TT per port */ + unsigned think_time; /* think time in ns */ + + /* for control/bulk error recovery (CLEAR_TT_BUFFER) */ + spinlock_t lock; + struct list_head clear_list; /* of usb_tt_clear */ + struct work_struct clear_work; +}; + +struct usb_tt_clear { + struct list_head clear_list; + unsigned tt; + u16 devinfo; + struct usb_hcd *hcd; + struct usb_host_endpoint *ep; +}; + +extern int usb_hub_clear_tt_buffer(struct urb *urb); +extern void usb_ep0_reinit(struct usb_device *); + +#endif /* __LINUX_HUB_H */ -- cgit v1.2.3-58-ga151 From 41f2c6e89cf4d412e4b20803f5feb2b9b1560476 Mon Sep 17 00:00:00 2001 From: Alessio Igor Bogani Date: Mon, 1 Mar 2010 14:10:56 +0100 Subject: USB: sisusbvga: Remove the BKL from ioctl Seems to me that BKL is not needed here because necessary locking is already provided by mutex sisusb->lock. Also change the returned value to long. Signed-off-by: Alessio Igor Bogani Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index aae95a009bd5..63a6070a478a 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -2974,13 +2974,12 @@ sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) struct sisusb_usb_data *sisusb; struct sisusb_info x; struct sisusb_command y; - int retval = 0; + long retval = 0; u32 __user *argp = (u32 __user *)arg; if (!(sisusb = (struct sisusb_usb_data *)file->private_data)) return -ENODEV; - lock_kernel(); mutex_lock(&sisusb->lock); /* Sanity check */ @@ -3039,7 +3038,6 @@ sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) err_out: mutex_unlock(&sisusb->lock); - unlock_kernel(); return retval; } -- cgit v1.2.3-58-ga151 From fa4dc36482a5236c92c589cdbc0a42ff5c945b6b Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 2 Mar 2010 14:52:33 -0800 Subject: USB: cdc-acm: make bitfields unsigned Fix usb/class sparse warnings: drivers/usb/class/cdc-acm.h:128:34: error: dubious one-bit signed bitfield drivers/usb/class/cdc-acm.h:129:24: error: dubious one-bit signed bitfield Signed-off-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 4a8e87ec6ce9..5eeb570b9a61 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -124,8 +124,8 @@ struct acm { unsigned char clocal; /* termios CLOCAL */ unsigned int ctrl_caps; /* control capabilities from the class specific header */ unsigned int susp_count; /* number of suspended interfaces */ - int combined_interfaces:1; /* control and data collapsed */ - int is_int_ep:1; /* interrupt endpoints contrary to spec used */ + unsigned int combined_interfaces:1; /* control and data collapsed */ + unsigned int is_int_ep:1; /* interrupt endpoints contrary to spec used */ u8 bInterval; struct acm_wb *delayed_wb; /* write queued for a device about to be woken */ }; -- cgit v1.2.3-58-ga151 From 0df4d8ef77f7e1251763d429f5ddbf5373961714 Mon Sep 17 00:00:00 2001 From: Ian Munsie Date: Wed, 3 Mar 2010 11:00:37 +1100 Subject: USB: Remove large struct from the stack in USB storage isd200 driver The compiler throws the following warning when compiling for a PowerPC 64 bit machine: drivers/usb/storage/isd200.c:580: warning: the frame size of 2208 bytes is larger than 2048 bytes There is a struct scsi_device which is placed on the stack and is largely responsible for such wastage. The struct is just a dummy struct filled with NULLs and set as the scsi_cmnd->device to make the usb_stor_Bulk_transport function happy. This patch makes the struct static, so that it is never placed onto the stack and silences the compiler warning. Signed-off-by: Ian Munsie Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/isd200.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c index fdba2f69d4c9..e9cbc1467f76 100644 --- a/drivers/usb/storage/isd200.c +++ b/drivers/usb/storage/isd200.c @@ -490,13 +490,13 @@ static int isd200_action( struct us_data *us, int action, void* pointer, int value ) { union ata_cdb ata; - struct scsi_device srb_dev; + /* static to prevent this large struct being placed on the valuable stack */ + static struct scsi_device srb_dev; struct isd200_info *info = (struct isd200_info *)us->extra; struct scsi_cmnd *srb = &info->srb; int status; memset(&ata, 0, sizeof(ata)); - memset(&srb_dev, 0, sizeof(srb_dev)); srb->cmnd = info->cmnd; srb->device = &srb_dev; ++srb->serial_number; -- cgit v1.2.3-58-ga151 From 45f30e0bdadd4660383250e85b543b0bea05413d Mon Sep 17 00:00:00 2001 From: Huang Weiyi Date: Thu, 4 Mar 2010 21:57:51 +0800 Subject: USB: remove duplicated #include Remove duplicated #include('s) in drivers/usb/core/hcd.c Signed-off-by: Huang Weiyi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 4a24843cfc61..38d4700926f7 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -38,7 +38,6 @@ #include #include #include -#include #include #include -- cgit v1.2.3-58-ga151 From 288ead45fa6637e959015d055304f521cbbc0575 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 4 Mar 2010 11:32:30 -0500 Subject: USB: remove bogus USB_PORT_FEAT_*_SPEED symbols This patch (as1348) removes the bogus USB_PORT_FEAT_{HIGHSPEED,SUPERSPEED} symbols from ch11.h. No such features are defined by the USB spec. (There is a PORT_LOWSPEED feature, but the spec doesn't mention it except to say that host software should never use it.) The speed indicators are port statuses, not port features. As a temporary workaround for the xhci-hcd driver, a fictional USB_PORT_STAT_SUPER_SPEED symbol is added. Signed-off-by: Alan Stern CC: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 8 ++++---- drivers/usb/host/ehci.h | 8 ++++---- drivers/usb/host/isp1760-hcd.c | 2 +- drivers/usb/host/oxu210hp-hcd.c | 4 ++-- drivers/usb/host/r8a66597-hcd.c | 7 +++---- drivers/usb/host/sl811-hcd.c | 6 +++--- drivers/usb/host/xhci-hub.c | 8 ++++---- include/linux/usb/ch11.h | 7 ++----- 8 files changed, 23 insertions(+), 27 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1883c3c7b69b..5ac27ed0c635 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -153,11 +153,11 @@ static int usb_reset_and_verify_device(struct usb_device *udev); static inline char *portspeed(int portstatus) { - if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED)) + if (portstatus & USB_PORT_STAT_HIGH_SPEED) return "480 Mb/s"; - else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED)) + else if (portstatus & USB_PORT_STAT_LOW_SPEED) return "1.5 Mb/s"; - else if (portstatus & (1 << USB_PORT_FEAT_SUPERSPEED)) + else if (portstatus & USB_PORT_STAT_SUPER_SPEED) return "5.0 Gb/s"; else return "12 Mb/s"; @@ -3075,7 +3075,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, if (!(hcd->driver->flags & HCD_USB3)) udev->speed = USB_SPEED_UNKNOWN; else if ((hdev->parent == NULL) && - (portstatus & (1 << USB_PORT_FEAT_SUPERSPEED))) + (portstatus & USB_PORT_STAT_SUPER_SPEED)) udev->speed = USB_SPEED_SUPER; else udev->speed = USB_SPEED_UNKNOWN; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 556c0b48f3ab..4ebe9ad209e4 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -556,20 +556,20 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) case 0: return 0; case 1: - return (1<root_hub[port]; - rh->port &= ~((1 << USB_PORT_FEAT_HIGHSPEED) | - (1 << USB_PORT_FEAT_LOWSPEED)); + rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); if (speed == HSMODE) - rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); + rh->port |= USB_PORT_STAT_HIGH_SPEED; else if (speed == LSMODE) - rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); + rh->port |= USB_PORT_STAT_LOW_SPEED; rh->port &= ~(1 << USB_PORT_FEAT_RESET); rh->port |= 1 << USB_PORT_FEAT_ENABLE; diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index 8f2f477890c4..dcd7fab7179c 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -1121,7 +1121,7 @@ sl811h_timer(unsigned long _sl811) u8 signaling = sl811->ctrl1 & SL11H_CTL1MASK_FORCE; const u32 mask = (1 << USB_PORT_FEAT_CONNECTION) | (1 << USB_PORT_FEAT_ENABLE) - | (1 << USB_PORT_FEAT_LOWSPEED); + | USB_PORT_STAT_LOW_SPEED; spin_lock_irqsave(&sl811->lock, flags); @@ -1162,7 +1162,7 @@ sl811h_timer(unsigned long _sl811) } else { sl811->port1 |= mask; if (irqstat & SL11H_INTMASK_DP) - sl811->port1 &= ~(1 << USB_PORT_FEAT_LOWSPEED); + sl811->port1 &= ~USB_PORT_STAT_LOW_SPEED; sl811->irq_enable = SL11H_INTMASK_INSRMV | SL11H_INTMASK_RD; } @@ -1173,7 +1173,7 @@ sl811h_timer(unsigned long _sl811) #ifdef USE_B sl811->irq_enable |= SL11H_INTMASK_DONE_B; #endif - if (sl811->port1 & (1 << USB_PORT_FEAT_LOWSPEED)) { + if (sl811->port1 & USB_PORT_STAT_LOW_SPEED) { sl811->ctrl1 |= SL11H_CTL1MASK_LSPD; ctrl2 |= SL811HS_CTL2MASK_DSWAP; } diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 208b805b80eb..dd69df1e4558 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -64,15 +64,15 @@ static void xhci_hub_descriptor(struct xhci_hcd *xhci, static unsigned int xhci_port_speed(unsigned int port_status) { if (DEV_LOWSPEED(port_status)) - return 1 << USB_PORT_FEAT_LOWSPEED; + return USB_PORT_STAT_LOW_SPEED; if (DEV_HIGHSPEED(port_status)) - return 1 << USB_PORT_FEAT_HIGHSPEED; + return USB_PORT_STAT_HIGH_SPEED; if (DEV_SUPERSPEED(port_status)) - return 1 << USB_PORT_FEAT_SUPERSPEED; + return USB_PORT_STAT_SUPER_SPEED; /* * FIXME: Yes, we should check for full speed, but the core uses that as * a default in portspeed() in usb/core/hub.c (which is the only place - * USB_PORT_FEAT_*SPEED is used). + * USB_PORT_STAT_*_SPEED is used). */ return 0; } diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h index 35cb7357ff72..bd3185aba4ee 100644 --- a/include/linux/usb/ch11.h +++ b/include/linux/usb/ch11.h @@ -47,11 +47,7 @@ #define USB_PORT_FEAT_RESET 4 #define USB_PORT_FEAT_L1 5 /* L1 suspend */ #define USB_PORT_FEAT_POWER 8 -#define USB_PORT_FEAT_LOWSPEED 9 -/* This value was never in Table 11-17 */ -#define USB_PORT_FEAT_HIGHSPEED 10 -/* This value is also fake */ -#define USB_PORT_FEAT_SUPERSPEED 11 +#define USB_PORT_FEAT_LOWSPEED 9 /* Should never be used */ #define USB_PORT_FEAT_C_CONNECTION 16 #define USB_PORT_FEAT_C_ENABLE 17 #define USB_PORT_FEAT_C_SUSPEND 18 @@ -87,6 +83,7 @@ struct usb_port_status { #define USB_PORT_STAT_TEST 0x0800 #define USB_PORT_STAT_INDICATOR 0x1000 /* bits 13 to 15 are reserved */ +#define USB_PORT_STAT_SUPER_SPEED 0x8000 /* Linux-internal */ /* * wPortChange bit field -- cgit v1.2.3-58-ga151 From 749da5f82fe33ff68dd4aa1a5e35cd9aa6246dab Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 4 Mar 2010 17:05:08 -0500 Subject: USB: straighten out port feature vs. port status usage This patch (as1349b) clears up the confusion in many USB host controller drivers between port features and port statuses. In mosty cases it's true that the status bit is in the position given by the corresponding feature value, but that's not always true and it's not guaranteed in the USB spec. There's no functional change, just replacing expressions of the form (1 << USB_PORT_FEAT_x) with USB_PORT_STAT_x, which has the same value. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 2 +- drivers/usb/host/ehci-hub.c | 24 +++++++++---------- drivers/usb/host/isp1362-hcd.c | 2 +- drivers/usb/host/isp1760-hcd.c | 18 +++++++------- drivers/usb/host/oxu210hp-hcd.c | 24 +++++++++---------- drivers/usb/host/r8a66597-hcd.c | 30 ++++++++++++------------ drivers/usb/host/sl811-hcd.c | 52 ++++++++++++++++++++--------------------- drivers/usb/host/xhci-hub.c | 16 ++++++------- drivers/usb/musb/musb_core.c | 7 +++--- drivers/usb/musb/musb_virthub.c | 4 ++-- 10 files changed, 89 insertions(+), 90 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 5ac27ed0c635..497dbb29744d 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3037,7 +3037,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, /* maybe switch power back on (e.g. root hub was reset) */ if ((wHubCharacteristics & HUB_CHAR_LPSM) < 2 - && !(portstatus & (1 << USB_PORT_FEAT_POWER))) + && !(portstatus & USB_PORT_STAT_POWER)) set_port_feature(hdev, port1, USB_PORT_FEAT_POWER); if (portstatus & USB_PORT_STAT_ENABLE) diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index c7178bcde67a..c44018109a13 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -659,7 +659,7 @@ static int ehci_hub_control ( * Even if OWNER is set, so the port is owned by the * companion controller, khubd needs to be able to clear * the port-change status bits (especially - * USB_PORT_FEAT_C_CONNECTION). + * USB_PORT_STAT_C_CONNECTION). */ switch (wValue) { @@ -729,12 +729,12 @@ static int ehci_hub_control ( // wPortChange bits if (temp & PORT_CSC) - status |= 1 << USB_PORT_FEAT_C_CONNECTION; + status |= USB_PORT_STAT_C_CONNECTION << 16; if (temp & PORT_PEC) - status |= 1 << USB_PORT_FEAT_C_ENABLE; + status |= USB_PORT_STAT_C_ENABLE << 16; if ((temp & PORT_OCC) && !ignore_oc){ - status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT; + status |= USB_PORT_STAT_C_OVERCURRENT << 16; /* * Hubs should disable port power on over-current. @@ -791,7 +791,7 @@ static int ehci_hub_control ( if ((temp & PORT_RESET) && time_after_eq(jiffies, ehci->reset_done[wIndex])) { - status |= 1 << USB_PORT_FEAT_C_RESET; + status |= USB_PORT_STAT_C_RESET << 16; ehci->reset_done [wIndex] = 0; /* force reset to complete */ @@ -833,7 +833,7 @@ static int ehci_hub_control ( */ if (temp & PORT_CONNECT) { - status |= 1 << USB_PORT_FEAT_CONNECTION; + status |= USB_PORT_STAT_CONNECTION; // status may be from integrated TT if (ehci->has_hostpc) { temp1 = ehci_readl(ehci, hostpc_reg); @@ -842,11 +842,11 @@ static int ehci_hub_control ( status |= ehci_port_speed(ehci, temp); } if (temp & PORT_PE) - status |= 1 << USB_PORT_FEAT_ENABLE; + status |= USB_PORT_STAT_ENABLE; /* maybe the port was unsuspended without our knowledge */ if (temp & (PORT_SUSPEND|PORT_RESUME)) { - status |= 1 << USB_PORT_FEAT_SUSPEND; + status |= USB_PORT_STAT_SUSPEND; } else if (test_bit(wIndex, &ehci->suspended_ports)) { clear_bit(wIndex, &ehci->suspended_ports); ehci->reset_done[wIndex] = 0; @@ -855,13 +855,13 @@ static int ehci_hub_control ( } if (temp & PORT_OC) - status |= 1 << USB_PORT_FEAT_OVER_CURRENT; + status |= USB_PORT_STAT_OVERCURRENT; if (temp & PORT_RESET) - status |= 1 << USB_PORT_FEAT_RESET; + status |= USB_PORT_STAT_RESET; if (temp & PORT_POWER) - status |= 1 << USB_PORT_FEAT_POWER; + status |= USB_PORT_STAT_POWER; if (test_bit(wIndex, &ehci->port_c_suspend)) - status |= 1 << USB_PORT_FEAT_C_SUSPEND; + status |= USB_PORT_STAT_C_SUSPEND << 16; #ifndef VERBOSE_DEBUG if (status & ~0xffff) /* only if wPortChange is interesting */ diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c index acc157da7275..6a6a50849bfe 100644 --- a/drivers/usb/host/isp1362-hcd.c +++ b/drivers/usb/host/isp1362-hcd.c @@ -1265,7 +1265,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd, /* don't submit to a dead or disabled port */ if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & - (1 << USB_PORT_FEAT_ENABLE)) || + USB_PORT_STAT_ENABLE) || !HC_IS_RUNNING(hcd->state)) { kfree(ep); retval = -ENODEV; diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index cfdac6da9556..13f7d1200bc0 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -1923,7 +1923,7 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, * Even if OWNER is set, so the port is owned by the * companion controller, khubd needs to be able to clear * the port-change status bits (especially - * USB_PORT_FEAT_C_CONNECTION). + * USB_PORT_STAT_C_CONNECTION). */ switch (wValue) { @@ -1987,7 +1987,7 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, /* wPortChange bits */ if (temp & PORT_CSC) - status |= 1 << USB_PORT_FEAT_C_CONNECTION; + status |= USB_PORT_STAT_C_CONNECTION << 16; /* whoever resumes must GetPortStatus to complete it!! */ @@ -2007,7 +2007,7 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, /* resume completed? */ else if (time_after_eq(jiffies, priv->reset_done)) { - status |= 1 << USB_PORT_FEAT_C_SUSPEND; + status |= USB_PORT_STAT_C_SUSPEND << 16; priv->reset_done = 0; /* stop resume signaling */ @@ -2031,7 +2031,7 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, if ((temp & PORT_RESET) && time_after_eq(jiffies, priv->reset_done)) { - status |= 1 << USB_PORT_FEAT_C_RESET; + status |= USB_PORT_STAT_C_RESET << 16; priv->reset_done = 0; /* force reset to complete */ @@ -2062,18 +2062,18 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, printk(KERN_ERR "Warning: PORT_OWNER is set\n"); if (temp & PORT_CONNECT) { - status |= 1 << USB_PORT_FEAT_CONNECTION; + status |= USB_PORT_STAT_CONNECTION; /* status may be from integrated TT */ status |= ehci_port_speed(priv, temp); } if (temp & PORT_PE) - status |= 1 << USB_PORT_FEAT_ENABLE; + status |= USB_PORT_STAT_ENABLE; if (temp & (PORT_SUSPEND|PORT_RESUME)) - status |= 1 << USB_PORT_FEAT_SUSPEND; + status |= USB_PORT_STAT_SUSPEND; if (temp & PORT_RESET) - status |= 1 << USB_PORT_FEAT_RESET; + status |= USB_PORT_STAT_RESET; if (temp & PORT_POWER) - status |= 1 << USB_PORT_FEAT_POWER; + status |= USB_PORT_STAT_POWER; put_unaligned(cpu_to_le32(status), (__le32 *) buf); break; diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index 8f04c0afa59f..f608dfd09a8a 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -3201,7 +3201,7 @@ static int oxu_hub_control(struct usb_hcd *hcd, u16 typeReq, * Even if OWNER is set, so the port is owned by the * companion controller, khubd needs to be able to clear * the port-change status bits (especially - * USB_PORT_FEAT_C_CONNECTION). + * USB_PORT_STAT_C_CONNECTION). */ switch (wValue) { @@ -3263,11 +3263,11 @@ static int oxu_hub_control(struct usb_hcd *hcd, u16 typeReq, /* wPortChange bits */ if (temp & PORT_CSC) - status |= 1 << USB_PORT_FEAT_C_CONNECTION; + status |= USB_PORT_STAT_C_CONNECTION << 16; if (temp & PORT_PEC) - status |= 1 << USB_PORT_FEAT_C_ENABLE; + status |= USB_PORT_STAT_C_ENABLE << 16; if ((temp & PORT_OCC) && !ignore_oc) - status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT; + status |= USB_PORT_STAT_C_OVERCURRENT << 16; /* whoever resumes must GetPortStatus to complete it!! */ if (temp & PORT_RESUME) { @@ -3285,7 +3285,7 @@ static int oxu_hub_control(struct usb_hcd *hcd, u16 typeReq, /* resume completed? */ else if (time_after_eq(jiffies, oxu->reset_done[wIndex])) { - status |= 1 << USB_PORT_FEAT_C_SUSPEND; + status |= USB_PORT_STAT_C_SUSPEND << 16; oxu->reset_done[wIndex] = 0; /* stop resume signaling */ @@ -3308,7 +3308,7 @@ static int oxu_hub_control(struct usb_hcd *hcd, u16 typeReq, if ((temp & PORT_RESET) && time_after_eq(jiffies, oxu->reset_done[wIndex])) { - status |= 1 << USB_PORT_FEAT_C_RESET; + status |= USB_PORT_STAT_C_RESET << 16; oxu->reset_done[wIndex] = 0; /* force reset to complete */ @@ -3347,20 +3347,20 @@ static int oxu_hub_control(struct usb_hcd *hcd, u16 typeReq, */ if (temp & PORT_CONNECT) { - status |= 1 << USB_PORT_FEAT_CONNECTION; + status |= USB_PORT_STAT_CONNECTION; /* status may be from integrated TT */ status |= oxu_port_speed(oxu, temp); } if (temp & PORT_PE) - status |= 1 << USB_PORT_FEAT_ENABLE; + status |= USB_PORT_STAT_ENABLE; if (temp & (PORT_SUSPEND|PORT_RESUME)) - status |= 1 << USB_PORT_FEAT_SUSPEND; + status |= USB_PORT_STAT_SUSPEND; if (temp & PORT_OC) - status |= 1 << USB_PORT_FEAT_OVER_CURRENT; + status |= USB_PORT_STAT_OVERCURRENT; if (temp & PORT_RESET) - status |= 1 << USB_PORT_FEAT_RESET; + status |= USB_PORT_STAT_RESET; if (temp & PORT_POWER) - status |= 1 << USB_PORT_FEAT_POWER; + status |= USB_PORT_STAT_POWER; #ifndef OXU_VERBOSE_DEBUG if (status & ~0xffff) /* only if wPortChange is interesting */ diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index a004a1220848..6db57ab6079d 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -1018,10 +1018,10 @@ static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; rh->scount = R8A66597_MAX_SAMPLING; if (connect) - rh->port |= 1 << USB_PORT_FEAT_CONNECTION; + rh->port |= USB_PORT_STAT_CONNECTION; else - rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION); - rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION; + rh->port &= ~USB_PORT_STAT_CONNECTION; + rh->port |= USB_PORT_STAT_C_CONNECTION << 16; r8a66597_root_hub_start_polling(r8a66597); } @@ -1065,8 +1065,8 @@ static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) else if (speed == LSMODE) rh->port |= USB_PORT_STAT_LOW_SPEED; - rh->port &= ~(1 << USB_PORT_FEAT_RESET); - rh->port |= 1 << USB_PORT_FEAT_ENABLE; + rh->port &= USB_PORT_STAT_RESET; + rh->port |= USB_PORT_STAT_ENABLE; } /* this function must be called with interrupt disabled */ @@ -1705,7 +1705,7 @@ static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) u16 tmp; struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; - if (rh->port & (1 << USB_PORT_FEAT_RESET)) { + if (rh->port & USB_PORT_STAT_RESET) { unsigned long dvstctr_reg = get_dvstctr_reg(port); tmp = r8a66597_read(r8a66597, dvstctr_reg); @@ -1717,7 +1717,7 @@ static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) r8a66597_usb_connect(r8a66597, port); } - if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) { + if (!(rh->port & USB_PORT_STAT_CONNECTION)) { r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); } @@ -2185,7 +2185,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, switch (wValue) { case USB_PORT_FEAT_ENABLE: - rh->port &= ~(1 << USB_PORT_FEAT_POWER); + rh->port &= ~USB_PORT_STAT_POWER; break; case USB_PORT_FEAT_SUSPEND: break; @@ -2226,12 +2226,12 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; case USB_PORT_FEAT_POWER: r8a66597_port_power(r8a66597, port, 1); - rh->port |= (1 << USB_PORT_FEAT_POWER); + rh->port |= USB_PORT_STAT_POWER; break; case USB_PORT_FEAT_RESET: { struct r8a66597_device *dev = rh->dev; - rh->port |= (1 << USB_PORT_FEAT_RESET); + rh->port |= USB_PORT_STAT_RESET; disable_r8a66597_pipe_all(r8a66597, dev); free_usb_address(r8a66597, dev, 1); @@ -2269,12 +2269,12 @@ static int r8a66597_bus_suspend(struct usb_hcd *hcd) struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; unsigned long dvstctr_reg = get_dvstctr_reg(port); - if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE))) + if (!(rh->port & USB_PORT_STAT_ENABLE)) continue; dbg("suspend port = %d", port); r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ - rh->port |= 1 << USB_PORT_FEAT_SUSPEND; + rh->port |= USB_PORT_STAT_SUSPEND; if (rh->dev->udev->do_remote_wakeup) { msleep(3); /* waiting last SOF */ @@ -2300,12 +2300,12 @@ static int r8a66597_bus_resume(struct usb_hcd *hcd) struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; unsigned long dvstctr_reg = get_dvstctr_reg(port); - if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND))) + if (!(rh->port & USB_PORT_STAT_SUSPEND)) continue; dbg("resume port = %d", port); - rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND); - rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND; + rh->port &= ~USB_PORT_STAT_SUSPEND; + rh->port |= USB_PORT_STAT_C_SUSPEND < 16; r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); msleep(50); r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index dcd7fab7179c..bcf9f0e809de 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -90,10 +90,10 @@ static void port_power(struct sl811 *sl811, int is_on) /* hub is inactive unless the port is powered */ if (is_on) { - if (sl811->port1 & (1 << USB_PORT_FEAT_POWER)) + if (sl811->port1 & USB_PORT_STAT_POWER) return; - sl811->port1 = (1 << USB_PORT_FEAT_POWER); + sl811->port1 = USB_PORT_STAT_POWER; sl811->irq_enable = SL11H_INTMASK_INSRMV; } else { sl811->port1 = 0; @@ -407,7 +407,7 @@ static struct sl811h_ep *start(struct sl811 *sl811, u8 bank) static inline void start_transfer(struct sl811 *sl811) { - if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) + if (sl811->port1 & USB_PORT_STAT_SUSPEND) return; if (sl811->active_a == NULL) { sl811->active_a = start(sl811, SL811_EP_A(SL811_HOST_BUF)); @@ -721,23 +721,23 @@ retry: * force the reset and make khubd clean up later. */ if (irqstat & SL11H_INTMASK_RD) - sl811->port1 &= ~(1 << USB_PORT_FEAT_CONNECTION); + sl811->port1 &= ~USB_PORT_STAT_CONNECTION; else - sl811->port1 |= 1 << USB_PORT_FEAT_CONNECTION; + sl811->port1 |= USB_PORT_STAT_CONNECTION; - sl811->port1 |= 1 << USB_PORT_FEAT_C_CONNECTION; + sl811->port1 |= USB_PORT_STAT_C_CONNECTION << 16; } else if (irqstat & SL11H_INTMASK_RD) { - if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) { + if (sl811->port1 & USB_PORT_STAT_SUSPEND) { DBG("wakeup\n"); - sl811->port1 |= 1 << USB_PORT_FEAT_C_SUSPEND; + sl811->port1 |= USB_PORT_STAT_C_SUSPEND << 16; sl811->stat_wake++; } else irqstat &= ~SL11H_INTMASK_RD; } if (irqstat) { - if (sl811->port1 & (1 << USB_PORT_FEAT_ENABLE)) + if (sl811->port1 & USB_PORT_STAT_ENABLE) start_transfer(sl811); ret = IRQ_HANDLED; if (retries--) @@ -819,7 +819,7 @@ static int sl811h_urb_enqueue( spin_lock_irqsave(&sl811->lock, flags); /* don't submit to a dead or disabled port */ - if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE)) + if (!(sl811->port1 & USB_PORT_STAT_ENABLE) || !HC_IS_RUNNING(hcd->state)) { retval = -ENODEV; kfree(ep); @@ -1119,8 +1119,8 @@ sl811h_timer(unsigned long _sl811) unsigned long flags; u8 irqstat; u8 signaling = sl811->ctrl1 & SL11H_CTL1MASK_FORCE; - const u32 mask = (1 << USB_PORT_FEAT_CONNECTION) - | (1 << USB_PORT_FEAT_ENABLE) + const u32 mask = USB_PORT_STAT_CONNECTION + | USB_PORT_STAT_ENABLE | USB_PORT_STAT_LOW_SPEED; spin_lock_irqsave(&sl811->lock, flags); @@ -1135,8 +1135,8 @@ sl811h_timer(unsigned long _sl811) switch (signaling) { case SL11H_CTL1MASK_SE0: DBG("end reset\n"); - sl811->port1 = (1 << USB_PORT_FEAT_C_RESET) - | (1 << USB_PORT_FEAT_POWER); + sl811->port1 = (USB_PORT_STAT_C_RESET << 16) + | USB_PORT_STAT_POWER; sl811->ctrl1 = 0; /* don't wrongly ack RD */ if (irqstat & SL11H_INTMASK_INSRMV) @@ -1144,7 +1144,7 @@ sl811h_timer(unsigned long _sl811) break; case SL11H_CTL1MASK_K: DBG("end resume\n"); - sl811->port1 &= ~(1 << USB_PORT_FEAT_SUSPEND); + sl811->port1 &= ~USB_PORT_STAT_SUSPEND; break; default: DBG("odd timer signaling: %02x\n", signaling); @@ -1154,9 +1154,9 @@ sl811h_timer(unsigned long _sl811) if (irqstat & SL11H_INTMASK_RD) { /* usbcore nukes all pending transactions on disconnect */ - if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION)) - sl811->port1 |= (1 << USB_PORT_FEAT_C_CONNECTION) - | (1 << USB_PORT_FEAT_C_ENABLE); + if (sl811->port1 & USB_PORT_STAT_CONNECTION) + sl811->port1 |= (USB_PORT_STAT_C_CONNECTION << 16) + | (USB_PORT_STAT_C_ENABLE << 16); sl811->port1 &= ~mask; sl811->irq_enable = SL11H_INTMASK_INSRMV; } else { @@ -1166,7 +1166,7 @@ sl811h_timer(unsigned long _sl811) sl811->irq_enable = SL11H_INTMASK_INSRMV | SL11H_INTMASK_RD; } - if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION)) { + if (sl811->port1 & USB_PORT_STAT_CONNECTION) { u8 ctrl2 = SL811HS_CTL2_INIT; sl811->irq_enable |= SL11H_INTMASK_DONE_A; @@ -1233,7 +1233,7 @@ sl811h_hub_control( switch (wValue) { case USB_PORT_FEAT_ENABLE: - sl811->port1 &= (1 << USB_PORT_FEAT_POWER); + sl811->port1 &= USB_PORT_STAT_POWER; sl811->ctrl1 = 0; sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); sl811->irq_enable = SL11H_INTMASK_INSRMV; @@ -1241,7 +1241,7 @@ sl811h_hub_control( sl811->irq_enable); break; case USB_PORT_FEAT_SUSPEND: - if (!(sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND))) + if (!(sl811->port1 & USB_PORT_STAT_SUSPEND)) break; /* 20 msec of resume/K signaling, other irqs blocked */ @@ -1290,9 +1290,9 @@ sl811h_hub_control( goto error; switch (wValue) { case USB_PORT_FEAT_SUSPEND: - if (sl811->port1 & (1 << USB_PORT_FEAT_RESET)) + if (sl811->port1 & USB_PORT_STAT_RESET) goto error; - if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE))) + if (!(sl811->port1 & USB_PORT_STAT_ENABLE)) goto error; DBG("suspend...\n"); @@ -1303,9 +1303,9 @@ sl811h_hub_control( port_power(sl811, 1); break; case USB_PORT_FEAT_RESET: - if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) + if (sl811->port1 & USB_PORT_STAT_SUSPEND) goto error; - if (!(sl811->port1 & (1 << USB_PORT_FEAT_POWER))) + if (!(sl811->port1 & USB_PORT_STAT_POWER)) break; /* 50 msec of reset/SE0 signaling, irqs blocked */ @@ -1314,7 +1314,7 @@ sl811h_hub_control( sl811->irq_enable); sl811->ctrl1 = SL11H_CTL1MASK_SE0; sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); - sl811->port1 |= (1 << USB_PORT_FEAT_RESET); + sl811->port1 |= USB_PORT_STAT_RESET; mod_timer(&sl811->timer, jiffies + msecs_to_jiffies(50)); break; diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index dd69df1e4558..325b47a267b9 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -205,27 +205,27 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, /* wPortChange bits */ if (temp & PORT_CSC) - status |= 1 << USB_PORT_FEAT_C_CONNECTION; + status |= USB_PORT_STAT_C_CONNECTION << 16; if (temp & PORT_PEC) - status |= 1 << USB_PORT_FEAT_C_ENABLE; + status |= USB_PORT_STAT_C_ENABLE << 16; if ((temp & PORT_OCC)) - status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT; + status |= USB_PORT_STAT_C_OVERCURRENT << 16; /* * FIXME ignoring suspend, reset, and USB 2.1/3.0 specific * changes */ if (temp & PORT_CONNECT) { - status |= 1 << USB_PORT_FEAT_CONNECTION; + status |= USB_PORT_STAT_CONNECTION; status |= xhci_port_speed(temp); } if (temp & PORT_PE) - status |= 1 << USB_PORT_FEAT_ENABLE; + status |= USB_PORT_STAT_ENABLE; if (temp & PORT_OC) - status |= 1 << USB_PORT_FEAT_OVER_CURRENT; + status |= USB_PORT_STAT_OVERCURRENT; if (temp & PORT_RESET) - status |= 1 << USB_PORT_FEAT_RESET; + status |= USB_PORT_STAT_RESET; if (temp & PORT_POWER) - status |= 1 << USB_PORT_FEAT_POWER; + status |= USB_PORT_STAT_POWER; xhci_dbg(xhci, "Get port status returned 0x%x\n", status); put_unaligned(cpu_to_le32(status), (__le32 *) buf); break; diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 705cc4ad8737..ced6d9ea9af3 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -353,8 +353,7 @@ void musb_hnp_stop(struct musb *musb) * which cause occasional OPT A "Did not receive reset after connect" * errors. */ - musb->port1_status &= - ~(1 << USB_PORT_FEAT_C_CONNECTION); + musb->port1_status &= ~(USB_PORT_STAT_C_CONNECTION << 16); } #endif @@ -530,8 +529,8 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb_writeb(mbase, MUSB_DEVCTL, devctl); } else { musb->port1_status |= - (1 << USB_PORT_FEAT_OVER_CURRENT) - | (1 << USB_PORT_FEAT_C_OVER_CURRENT); + USB_PORT_STAT_OVERCURRENT + | (USB_PORT_STAT_C_OVERCURRENT << 16); } break; default: diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 7775e1c0a215..92e85e027cfb 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -183,8 +183,8 @@ static void musb_port_reset(struct musb *musb, bool do_reset) void musb_root_disconnect(struct musb *musb) { - musb->port1_status = (1 << USB_PORT_FEAT_POWER) - | (1 << USB_PORT_FEAT_C_CONNECTION); + musb->port1_status = USB_PORT_STAT_POWER + | (USB_PORT_STAT_C_CONNECTION << 16); usb_hcd_poll_rh_status(musb_to_hcd(musb)); musb->is_active = 0; -- cgit v1.2.3-58-ga151 From 0ede76fcec5415ef82a423a95120286895822e2d Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 5 Mar 2010 15:10:17 -0500 Subject: USB: remove uses of URB_NO_SETUP_DMA_MAP This patch (as1350) removes all usages of coherent buffers for USB control-request setup-packet buffers. There's no good reason to reserve coherent memory for these things; control requests are hardly ever used in large quantity (the major exception is firmware transfers, and they aren't time-critical). Furthermore, only seven drivers used it. We might as well always use streaming DMA mappings for setup-packet buffers, and remove some extra complexity from usbcore. The DMA-mapping portion of hcd.c is currently in flux. A separate patch will be submitted to remove support for URB_NO_SETUP_DMA_MAP after everything else settles down. The removal should go smoothly, as by then nobody will be using it. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/hid/usbhid/hid-core.c | 8 +++----- drivers/hid/usbhid/usbhid.h | 1 - drivers/hid/usbhid/usbkbd.c | 8 +++----- drivers/input/misc/cm109.c | 12 +++--------- drivers/input/misc/powermate.c | 9 ++------- drivers/input/misc/yealink.c | 11 +++-------- drivers/usb/core/urb.c | 4 ++-- drivers/usb/core/usb.c | 18 +++--------------- drivers/usb/misc/usbtest.c | 9 ++------- drivers/usb/storage/transport.c | 2 -- drivers/usb/storage/usb.c | 15 +++++---------- drivers/usb/storage/usb.h | 3 +-- drivers/usb/wusbcore/wa-xfer.c | 2 -- 13 files changed, 27 insertions(+), 75 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 7b85b696fdab..6a510c9675fc 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -787,8 +787,7 @@ static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) &usbhid->inbuf_dma); usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, &usbhid->outbuf_dma); - usbhid->cr = usb_buffer_alloc(dev, sizeof(*usbhid->cr), GFP_KERNEL, - &usbhid->cr_dma); + usbhid->cr = kmalloc(sizeof(*usbhid->cr), GFP_KERNEL); usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, &usbhid->ctrlbuf_dma); if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || @@ -846,7 +845,7 @@ static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); - usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma); + kfree(usbhid->cr); usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); } @@ -1007,9 +1006,8 @@ static int usbhid_start(struct hid_device *hid) usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, usbhid->ctrlbuf, 1, hid_ctrl, hid); - usbhid->urbctrl->setup_dma = usbhid->cr_dma; usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; - usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); + usbhid->urbctrl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS)) usbhid_init_reports(hid); diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index ec20400c7f29..693fd3e720df 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -75,7 +75,6 @@ struct usbhid_device { struct urb *urbctrl; /* Control URB */ struct usb_ctrlrequest *cr; /* Control request struct */ - dma_addr_t cr_dma; /* Control request struct dma */ struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */ unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */ char *ctrlbuf; /* Control buffer */ diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c index f843443ba5c3..bdc7b09e8670 100644 --- a/drivers/hid/usbhid/usbkbd.c +++ b/drivers/hid/usbhid/usbkbd.c @@ -74,7 +74,6 @@ struct usb_kbd { unsigned char *new; struct usb_ctrlrequest *cr; unsigned char *leds; - dma_addr_t cr_dma; dma_addr_t new_dma; dma_addr_t leds_dma; }; @@ -199,7 +198,7 @@ static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd) return -1; if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma))) return -1; - if (!(kbd->cr = usb_buffer_alloc(dev, sizeof(struct usb_ctrlrequest), GFP_ATOMIC, &kbd->cr_dma))) + if (!(kbd->cr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL))) return -1; if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma))) return -1; @@ -212,7 +211,7 @@ static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd) usb_free_urb(kbd->irq); usb_free_urb(kbd->led); usb_buffer_free(dev, 8, kbd->new, kbd->new_dma); - usb_buffer_free(dev, sizeof(struct usb_ctrlrequest), kbd->cr, kbd->cr_dma); + kfree(kbd->cr); usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma); } @@ -304,9 +303,8 @@ static int usb_kbd_probe(struct usb_interface *iface, usb_fill_control_urb(kbd->led, dev, usb_sndctrlpipe(dev, 0), (void *) kbd->cr, kbd->leds, 1, usb_kbd_led, kbd); - kbd->led->setup_dma = kbd->cr_dma; kbd->led->transfer_dma = kbd->leds_dma; - kbd->led->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); + kbd->led->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; error = input_register_device(kbd->dev); if (error) diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c index 86457feccfc4..8d2d291ee508 100644 --- a/drivers/input/misc/cm109.c +++ b/drivers/input/misc/cm109.c @@ -102,7 +102,6 @@ struct cm109_dev { struct cm109_ctl_packet *ctl_data; dma_addr_t ctl_dma; struct usb_ctrlrequest *ctl_req; - dma_addr_t ctl_req_dma; struct urb *urb_ctl; /* * The 3 bitfields below are protected by ctl_submit_lock. @@ -629,9 +628,7 @@ static const struct usb_device_id cm109_usb_table[] = { static void cm109_usb_cleanup(struct cm109_dev *dev) { - if (dev->ctl_req) - usb_buffer_free(dev->udev, sizeof(*(dev->ctl_req)), - dev->ctl_req, dev->ctl_req_dma); + kfree(dev->ctl_req); if (dev->ctl_data) usb_buffer_free(dev->udev, USB_PKT_LEN, dev->ctl_data, dev->ctl_dma); @@ -696,8 +693,7 @@ static int cm109_usb_probe(struct usb_interface *intf, if (!dev->ctl_data) goto err_out; - dev->ctl_req = usb_buffer_alloc(udev, sizeof(*(dev->ctl_req)), - GFP_KERNEL, &dev->ctl_req_dma); + dev->ctl_req = kmalloc(sizeof(*(dev->ctl_req)), GFP_KERNEL); if (!dev->ctl_req) goto err_out; @@ -735,10 +731,8 @@ static int cm109_usb_probe(struct usb_interface *intf, usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0), (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN, cm109_urb_ctl_callback, dev); - dev->urb_ctl->setup_dma = dev->ctl_req_dma; dev->urb_ctl->transfer_dma = dev->ctl_dma; - dev->urb_ctl->transfer_flags |= URB_NO_SETUP_DMA_MAP | - URB_NO_TRANSFER_DMA_MAP; + dev->urb_ctl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; dev->urb_ctl->dev = udev; /* find out the physical bus location */ diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c index 668913d12044..7ba4b5f53fc2 100644 --- a/drivers/input/misc/powermate.c +++ b/drivers/input/misc/powermate.c @@ -64,7 +64,6 @@ struct powermate_device { dma_addr_t data_dma; struct urb *irq, *config; struct usb_ctrlrequest *configcr; - dma_addr_t configcr_dma; struct usb_device *udev; struct input_dev *input; spinlock_t lock; @@ -182,8 +181,6 @@ static void powermate_sync_state(struct powermate_device *pm) usb_fill_control_urb(pm->config, pm->udev, usb_sndctrlpipe(pm->udev, 0), (void *) pm->configcr, NULL, 0, powermate_config_complete, pm); - pm->config->setup_dma = pm->configcr_dma; - pm->config->transfer_flags |= URB_NO_SETUP_DMA_MAP; if (usb_submit_urb(pm->config, GFP_ATOMIC)) printk(KERN_ERR "powermate: usb_submit_urb(config) failed"); @@ -281,8 +278,7 @@ static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_dev if (!pm->data) return -1; - pm->configcr = usb_buffer_alloc(udev, sizeof(*(pm->configcr)), - GFP_ATOMIC, &pm->configcr_dma); + pm->configcr = kmalloc(sizeof(*(pm->configcr)), GFP_KERNEL); if (!pm->configcr) return -1; @@ -293,8 +289,7 @@ static void powermate_free_buffers(struct usb_device *udev, struct powermate_dev { usb_buffer_free(udev, POWERMATE_PAYLOAD_SIZE_MAX, pm->data, pm->data_dma); - usb_buffer_free(udev, sizeof(*(pm->configcr)), - pm->configcr, pm->configcr_dma); + kfree(pm->configcr); } /* Called whenever a USB device matching one in our supported devices table is connected */ diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c index 93a22ac0f88c..2828328e9dd0 100644 --- a/drivers/input/misc/yealink.c +++ b/drivers/input/misc/yealink.c @@ -111,7 +111,6 @@ struct yealink_dev { struct yld_ctl_packet *ctl_data; dma_addr_t ctl_dma; struct usb_ctrlrequest *ctl_req; - dma_addr_t ctl_req_dma; struct urb *urb_ctl; char phys[64]; /* physical device path */ @@ -836,8 +835,7 @@ static int usb_cleanup(struct yealink_dev *yld, int err) usb_free_urb(yld->urb_irq); usb_free_urb(yld->urb_ctl); - usb_buffer_free(yld->udev, sizeof(*(yld->ctl_req)), - yld->ctl_req, yld->ctl_req_dma); + kfree(yld->ctl_req); usb_buffer_free(yld->udev, USB_PKT_LEN, yld->ctl_data, yld->ctl_dma); usb_buffer_free(yld->udev, USB_PKT_LEN, @@ -896,8 +894,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id) if (!yld->ctl_data) return usb_cleanup(yld, -ENOMEM); - yld->ctl_req = usb_buffer_alloc(udev, sizeof(*(yld->ctl_req)), - GFP_ATOMIC, &yld->ctl_req_dma); + yld->ctl_req = kmalloc(sizeof(*(yld->ctl_req)), GFP_KERNEL); if (yld->ctl_req == NULL) return usb_cleanup(yld, -ENOMEM); @@ -936,10 +933,8 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id) usb_fill_control_urb(yld->urb_ctl, udev, usb_sndctrlpipe(udev, 0), (void *)yld->ctl_req, yld->ctl_data, USB_PKT_LEN, urb_ctl_callback, yld); - yld->urb_ctl->setup_dma = yld->ctl_req_dma; yld->urb_ctl->transfer_dma = yld->ctl_dma; - yld->urb_ctl->transfer_flags |= URB_NO_SETUP_DMA_MAP | - URB_NO_TRANSFER_DMA_MAP; + yld->urb_ctl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; yld->urb_ctl->dev = udev; /* find out the physical bus location */ diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 09301f4b7225..2532a0917f8c 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -396,8 +396,8 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) return -EPIPE; /* The most suitable error code :-) */ /* enforce simple/standard policy */ - allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | - URB_NO_INTERRUPT | URB_DIR_MASK | URB_FREE_BUFFER); + allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT | URB_DIR_MASK | + URB_FREE_BUFFER); switch (xfertype) { case USB_ENDPOINT_XFER_BULK: if (is_out) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 1088abb4416c..097172e2ba06 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -775,7 +775,7 @@ EXPORT_SYMBOL_GPL(usb_free_coherent); * @urb: urb whose transfer_buffer/setup_packet will be mapped * * Return value is either null (indicating no buffer could be mapped), or - * the parameter. URB_NO_TRANSFER_DMA_MAP and URB_NO_SETUP_DMA_MAP are + * the parameter. URB_NO_TRANSFER_DMA_MAP is * added to urb->transfer_flags if the operation succeeds. If the device * is connected to this system through a non-DMA controller, this operation * always succeeds. @@ -803,17 +803,11 @@ struct urb *usb_buffer_map(struct urb *urb) urb->transfer_buffer, urb->transfer_buffer_length, usb_pipein(urb->pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); - if (usb_pipecontrol(urb->pipe)) - urb->setup_dma = dma_map_single(controller, - urb->setup_packet, - sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); /* FIXME generic api broken like pci, can't report errors */ /* if (urb->transfer_dma == DMA_ADDR_INVALID) return 0; */ } else urb->transfer_dma = ~0; - urb->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP - | URB_NO_SETUP_DMA_MAP); + urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; return urb; } EXPORT_SYMBOL_GPL(usb_buffer_map); @@ -881,14 +875,8 @@ void usb_buffer_unmap(struct urb *urb) urb->transfer_dma, urb->transfer_buffer_length, usb_pipein(urb->pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); - if (usb_pipecontrol(urb->pipe)) - dma_unmap_single(controller, - urb->setup_dma, - sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); } - urb->transfer_flags &= ~(URB_NO_TRANSFER_DMA_MAP - | URB_NO_SETUP_DMA_MAP); + urb->transfer_flags &= ~URB_NO_TRANSFER_DMA_MAP; } EXPORT_SYMBOL_GPL(usb_buffer_unmap); #endif /* 0 */ diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index a21cce6f7403..9dcc82337ced 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -977,15 +977,13 @@ test_ctrl_queue (struct usbtest_dev *dev, struct usbtest_param *param) if (!u) goto cleanup; - reqp = usb_buffer_alloc (udev, sizeof *reqp, GFP_KERNEL, - &u->setup_dma); + reqp = kmalloc(sizeof *reqp, GFP_KERNEL); if (!reqp) goto cleanup; reqp->setup = req; reqp->number = i % NUM_SUBCASES; reqp->expected = expected; u->setup_packet = (char *) &reqp->setup; - u->transfer_flags |= URB_NO_SETUP_DMA_MAP; u->context = &context; u->complete = ctrl_complete; @@ -1017,10 +1015,7 @@ cleanup: if (!urb [i]) continue; urb [i]->dev = udev; - if (urb [i]->setup_packet) - usb_buffer_free (udev, sizeof (struct usb_ctrlrequest), - urb [i]->setup_packet, - urb [i]->setup_dma); + kfree(urb[i]->setup_packet); simple_free_urb (urb [i]); } kfree (urb); diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index f253edec3bb8..44716427c51c 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -147,11 +147,9 @@ static int usb_stor_msg_common(struct us_data *us, int timeout) * hasn't been mapped for DMA. Yes, this is clunky, but it's * easier than always having the caller tell us whether the * transfer buffer has already been mapped. */ - us->current_urb->transfer_flags = URB_NO_SETUP_DMA_MAP; if (us->current_urb->transfer_buffer == us->iobuf) us->current_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; us->current_urb->transfer_dma = us->iobuf_dma; - us->current_urb->setup_dma = us->cr_dma; /* submit the URB */ status = usb_submit_urb(us->current_urb, GFP_NOIO); diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index bbeeb92a2131..c54a370c76c5 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -407,9 +407,8 @@ static int associate_dev(struct us_data *us, struct usb_interface *intf) /* Store our private data in the interface */ usb_set_intfdata(intf, us); - /* Allocate the device-related DMA-mapped buffers */ - us->cr = usb_buffer_alloc(us->pusb_dev, sizeof(*us->cr), - GFP_KERNEL, &us->cr_dma); + /* Allocate the control/setup and DMA-mapped buffers */ + us->cr = kmalloc(sizeof(*us->cr), GFP_KERNEL); if (!us->cr) { US_DEBUGP("usb_ctrlrequest allocation failed\n"); return -ENOMEM; @@ -757,13 +756,9 @@ static void dissociate_dev(struct us_data *us) { US_DEBUGP("-- %s\n", __func__); - /* Free the device-related DMA-mapped buffers */ - if (us->cr) - usb_buffer_free(us->pusb_dev, sizeof(*us->cr), us->cr, - us->cr_dma); - if (us->iobuf) - usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, - us->iobuf_dma); + /* Free the buffers */ + kfree(us->cr); + usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); /* Remove our private data from the interface */ usb_set_intfdata(us->pusb_intf, NULL); diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h index 69717134231b..89d3bfff98df 100644 --- a/drivers/usb/storage/usb.h +++ b/drivers/usb/storage/usb.h @@ -139,8 +139,7 @@ struct us_data { struct usb_ctrlrequest *cr; /* control requests */ struct usb_sg_request current_sg; /* scatter-gather req. */ unsigned char *iobuf; /* I/O buffer */ - dma_addr_t cr_dma; /* buffer DMA addresses */ - dma_addr_t iobuf_dma; + dma_addr_t iobuf_dma; /* buffer DMA addresses */ struct task_struct *ctl_thread; /* the control thread */ /* mutual exclusion and synchronization structures */ diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 112ef7e26f6b..2ce6b7eccc6a 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -474,8 +474,6 @@ static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer, struct wa_xfer_ctl *xfer_ctl = container_of(xfer_hdr0, struct wa_xfer_ctl, hdr); xfer_ctl->bmAttribute = xfer->is_inbound ? 1 : 0; - BUG_ON(xfer->urb->transfer_flags & URB_NO_SETUP_DMA_MAP - && xfer->urb->setup_packet == NULL); memcpy(&xfer_ctl->baSetupData, xfer->urb->setup_packet, sizeof(xfer_ctl->baSetupData)); break; -- cgit v1.2.3-58-ga151 From 9757de384451a606af8c722213cb973192cbbd1b Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Mon, 8 Mar 2010 20:43:32 +0100 Subject: USB: ehci-au1xxx does not need EHCI IO watchdog I've been running variations of this patch for well over a year now; my usual zoo of test devices didn't trigger any ill effects even under heavy load. As a nice sideeffect idle-wakeups are reduced from 20/s to about 2/s (EHCI hub with mouse and kbd). Signed-off-by: Manuel Lauss Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-au1xxx.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index e3a74e75e822..7a27b7c4ee84 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -69,6 +69,15 @@ static void au1xxx_stop_ehc(void) au_sync(); } +static int au1xxx_ehci_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int ret = ehci_init(hcd); + + ehci->need_io_watchdog = 0; + return ret; +} + static const struct hc_driver ehci_au1xxx_hc_driver = { .description = hcd_name, .product_desc = "Au1xxx EHCI", @@ -86,7 +95,7 @@ static const struct hc_driver ehci_au1xxx_hc_driver = { * FIXME -- ehci_init() doesn't do enough here. * See ehci-ppc-soc for a complete implementation. */ - .reset = ehci_init, + .reset = au1xxx_ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, -- cgit v1.2.3-58-ga151 From bd5afa9eac6daa408412a31a6c69e87e8bd28c7e Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Mon, 8 Mar 2010 21:50:12 -0600 Subject: usb-serial: Use tty_port version console instead of usb_serial_port Replace all instances of using the console variable in struct usb_serial_port with the struct tty_port version. CC: Alan Cox CC: Alan Stern CC: Oliver Neukum CC: Andrew Morton CC: linux-usb@vger.kernel.org CC: linux-kernel@vger.kernel.org Signed-off-by: Jason Wessel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/console.c | 5 ++--- drivers/usb/serial/ftdi_sio.c | 2 +- drivers/usb/serial/generic.c | 4 ++-- drivers/usb/serial/pl2303.c | 2 +- drivers/usb/serial/usb-serial.c | 4 ++-- include/linux/usb/serial.h | 2 -- 6 files changed, 8 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index f347da2ef00a..4ea64fef6718 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -180,7 +180,6 @@ static int usb_console_setup(struct console *co, char *options) --port->port.count; /* The console is special in terms of closing the device so * indicate this port is now acting as a system console. */ - port->console = 1; port->port.console = 1; mutex_unlock(&serial->disc_mutex); @@ -217,7 +216,7 @@ static void usb_console_write(struct console *co, dbg("%s - port %d, %d byte(s)", __func__, port->number, count); - if (!port->console) { + if (!port->port.console) { dbg("%s - port not opened", __func__); return; } @@ -313,7 +312,7 @@ void usb_serial_console_exit(void) { if (usbcons_info.port) { unregister_console(&usbcons); - usbcons_info.port->console = 0; + usbcons_info.port->port.console = 0; usbcons_info.port = NULL; } } diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 1d7c4fac02e8..46a88ae9c46a 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2074,7 +2074,7 @@ static int ftdi_process_packet(struct tty_struct *tty, return 0; /* status only */ ch = packet + 2; - if (!(port->console && port->sysrq) && flag == TTY_NORMAL) + if (!(port->port.console && port->sysrq) && flag == TTY_NORMAL) tty_insert_flip_string(tty, ch, len); else { for (i = 0; i < len; i++, ch++) { diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index f804acb138ec..ba61c745df0b 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -447,7 +447,7 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) /* The per character mucking around with sysrq path it too slow for stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases where the USB serial is not a console anyway */ - if (!port->console || !port->sysrq) + if (!port->port.console || !port->sysrq) tty_insert_flip_string(tty, ch, urb->actual_length); else { /* Push data to tty */ @@ -561,7 +561,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, unsigned int ch) { - if (port->sysrq && port->console) { + if (port->sysrq && port->port.console) { if (ch && time_before(jiffies, port->sysrq)) { handle_sysrq(ch, tty); port->sysrq = 0; diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index c28b1607eacc..b10b0efe3e06 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -1058,7 +1058,7 @@ static void pl2303_push_data(struct tty_struct *tty, if (line_status & UART_OVERRUN_ERROR) tty_insert_flip_char(tty, 0, TTY_OVERRUN); - if (tty_flag == TTY_NORMAL && !(port->console && port->sysrq)) + if (tty_flag == TTY_NORMAL && !(port->port.console && port->sysrq)) tty_insert_flip_string(tty, data, urb->actual_length); else { int i; diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 3873660d8217..f3f65171de38 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -289,7 +289,7 @@ static void serial_down(struct tty_port *tport) * The console is magical. Do not hang up the console hardware * or there will be tears. */ - if (port->console) + if (port->port.console) return; if (drv->close) drv->close(port); @@ -328,7 +328,7 @@ static void serial_cleanup(struct tty_struct *tty) /* The console is magical. Do not hang up the console hardware * or there will be tears. */ - if (port->console) + if (port->port.console) return; dbg("%s - port %d", __func__, port->number); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 0a458b861933..b7682fed1d9c 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -66,7 +66,6 @@ enum port_dev_state { * @work: work queue entry for the line discipline waking up. * @throttled: nonzero if the read urb is inactive to throttle the device * @throttle_req: nonzero if the tty wants to throttle us - * @console: attached usb serial console * @dev: pointer to the serial device * * This structure is used by the usb-serial core and drivers for the specific @@ -106,7 +105,6 @@ struct usb_serial_port { struct work_struct work; char throttled; char throttle_req; - char console; unsigned long sysrq; /* sysrq timeout */ struct device dev; enum port_dev_state dev_state; -- cgit v1.2.3-58-ga151 From e6c213b2968cbee4cfb8f89f2d685b9ad07eefbd Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 12 Mar 2010 10:29:06 +0200 Subject: usb: musb: allow board to pass down fifo mode boards might want to optimize their fifo configuration to the particular needs of that specific board. Allow that by moving all related data structures to Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 36 ++++++++++++++++-------------------- include/linux/usb/musb.h | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 20 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index ced6d9ea9af3..3f4c158a9f5e 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -995,24 +995,13 @@ static ushort __initdata fifo_mode = 2; module_param(fifo_mode, ushort, 0); MODULE_PARM_DESC(fifo_mode, "initial endpoint configuration"); - -enum fifo_style { FIFO_RXTX, FIFO_TX, FIFO_RX } __attribute__ ((packed)); -enum buf_mode { BUF_SINGLE, BUF_DOUBLE } __attribute__ ((packed)); - -struct fifo_cfg { - u8 hw_ep_num; - enum fifo_style style; - enum buf_mode mode; - u16 maxpacket; -}; - /* * tables defining fifo_mode values. define more if you like. * for host side, make sure both halves of ep1 are set up. */ /* mode 0 - fits in 2KB */ -static struct fifo_cfg __initdata mode_0_cfg[] = { +static struct musb_fifo_cfg __initdata mode_0_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, { .hw_ep_num = 2, .style = FIFO_RXTX, .maxpacket = 512, }, @@ -1021,7 +1010,7 @@ static struct fifo_cfg __initdata mode_0_cfg[] = { }; /* mode 1 - fits in 4KB */ -static struct fifo_cfg __initdata mode_1_cfg[] = { +static struct musb_fifo_cfg __initdata mode_1_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, .mode = BUF_DOUBLE, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, .mode = BUF_DOUBLE, }, { .hw_ep_num = 2, .style = FIFO_RXTX, .maxpacket = 512, .mode = BUF_DOUBLE, }, @@ -1030,7 +1019,7 @@ static struct fifo_cfg __initdata mode_1_cfg[] = { }; /* mode 2 - fits in 4KB */ -static struct fifo_cfg __initdata mode_2_cfg[] = { +static struct musb_fifo_cfg __initdata mode_2_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, { .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, }, @@ -1040,7 +1029,7 @@ static struct fifo_cfg __initdata mode_2_cfg[] = { }; /* mode 3 - fits in 4KB */ -static struct fifo_cfg __initdata mode_3_cfg[] = { +static struct musb_fifo_cfg __initdata mode_3_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, .mode = BUF_DOUBLE, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, .mode = BUF_DOUBLE, }, { .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, }, @@ -1050,7 +1039,7 @@ static struct fifo_cfg __initdata mode_3_cfg[] = { }; /* mode 4 - fits in 16KB */ -static struct fifo_cfg __initdata mode_4_cfg[] = { +static struct musb_fifo_cfg __initdata mode_4_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, { .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, }, @@ -1081,7 +1070,7 @@ static struct fifo_cfg __initdata mode_4_cfg[] = { }; /* mode 5 - fits in 8KB */ -static struct fifo_cfg __initdata mode_5_cfg[] = { +static struct musb_fifo_cfg __initdata mode_5_cfg[] = { { .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, { .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, { .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, }, @@ -1119,7 +1108,7 @@ static struct fifo_cfg __initdata mode_5_cfg[] = { */ static int __init fifo_setup(struct musb *musb, struct musb_hw_ep *hw_ep, - const struct fifo_cfg *cfg, u16 offset) + const struct musb_fifo_cfg *cfg, u16 offset) { void __iomem *mbase = musb->mregs; int size = 0; @@ -1190,17 +1179,23 @@ fifo_setup(struct musb *musb, struct musb_hw_ep *hw_ep, return offset + (maxpacket << ((c_size & MUSB_FIFOSZ_DPB) ? 1 : 0)); } -static struct fifo_cfg __initdata ep0_cfg = { +static struct musb_fifo_cfg __initdata ep0_cfg = { .style = FIFO_RXTX, .maxpacket = 64, }; static int __init ep_config_from_table(struct musb *musb) { - const struct fifo_cfg *cfg; + const struct musb_fifo_cfg *cfg; unsigned i, n; int offset; struct musb_hw_ep *hw_ep = musb->endpoints; + if (musb->config->fifo_cfg) { + cfg = musb->config->fifo_cfg; + n = musb->config->fifo_cfg_size; + goto done; + } + switch (fifo_mode) { default: fifo_mode = 0; @@ -1235,6 +1230,7 @@ static int __init ep_config_from_table(struct musb *musb) musb_driver_name, fifo_mode); +done: offset = fifo_setup(musb, hw_ep, &ep0_cfg, 0); /* assert(offset > 0) */ diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index 7acef0234c0e..f3d68f62dae8 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -22,12 +22,47 @@ enum musb_mode { struct clk; +enum musb_fifo_style { + FIFO_RXTX, + FIFO_TX, + FIFO_RX +} __attribute__ ((packed)); + +enum musb_buf_mode { + BUF_SINGLE, + BUF_DOUBLE +} __attribute__ ((packed)); + +struct musb_fifo_cfg { + u8 hw_ep_num; + enum musb_fifo_style style; + enum musb_buf_mode mode; + u16 maxpacket; +}; + +#define MUSB_EP_FIFO(ep, st, m, pkt) \ +{ \ + .hw_ep_num = ep, \ + .style = st, \ + .mode = m, \ + .maxpacket = pkt, \ +} + +#define MUSB_EP_FIFO_SINGLE(ep, st, pkt) \ + MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt) + +#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt) \ + MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt) + struct musb_hdrc_eps_bits { const char name[16]; u8 bits; }; struct musb_hdrc_config { + struct musb_fifo_cfg *fifo_cfg; /* board fifo configuration */ + unsigned fifo_cfg_size; /* size of the fifo configuration */ + /* MUSB configuration-specific details */ unsigned multipoint:1; /* multipoint device */ unsigned dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */ -- cgit v1.2.3-58-ga151 From de2e1b0c988c901989713869a8bea3b3d02bb9ce Mon Sep 17 00:00:00 2001 From: Maulik Mankad Date: Fri, 12 Mar 2010 10:29:07 +0200 Subject: usb: musb: Set transceiver interface type Program the OTG_INTERFSEL register based on transcevier type passed from board file. Adapt signature of musb_platform_init() function for davinci, blackfin and tusb6010. Signed-off-by: Maulik Mankad Cc: David Brownell Cc: Sergei Shtylyov Cc: Olof Johansson Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 2 +- drivers/usb/musb/davinci.c | 2 +- drivers/usb/musb/musb_core.c | 2 +- drivers/usb/musb/musb_core.h | 2 +- drivers/usb/musb/omap2430.c | 13 +++++++++++-- drivers/usb/musb/tusb6010.c | 2 +- 6 files changed, 16 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index ec8d324237f6..7c71eb422a9c 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -270,7 +270,7 @@ int musb_platform_set_mode(struct musb *musb, u8 musb_mode) return -EIO; } -int __init musb_platform_init(struct musb *musb) +int __init musb_platform_init(struct musb *musb, void *board_data) { /* diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index ce2e16fee0df..57624361c1de 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -376,7 +376,7 @@ int musb_platform_set_mode(struct musb *musb, u8 mode) return -EIO; } -int __init musb_platform_init(struct musb *musb) +int __init musb_platform_init(struct musb *musb, void *board_data) { void __iomem *tibase = musb->ctrl_base; u32 revision; diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 3f4c158a9f5e..633272e6d321 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1943,7 +1943,7 @@ bad_config: * isp1504, non-OTG, etc) mostly hooking up through ULPI. */ musb->isr = generic_interrupt; - status = musb_platform_init(musb); + status = musb_platform_init(musb, plat->board_data); if (status < 0) goto fail2; diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 1da14bf17a65..136f71cbd5e3 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -608,7 +608,7 @@ extern int musb_platform_get_vbus_status(struct musb *musb); #define musb_platform_get_vbus_status(x) 0 #endif -extern int __init musb_platform_init(struct musb *musb); +extern int __init musb_platform_init(struct musb *musb, void *board_data); extern int musb_platform_exit(struct musb *musb); #endif /* __MUSB_CORE_H__ */ diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 82592633502f..0e5d0670506b 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -199,9 +199,10 @@ int musb_platform_set_mode(struct musb *musb, u8 musb_mode) return 0; } -int __init musb_platform_init(struct musb *musb) +int __init musb_platform_init(struct musb *musb, void *board_data) { u32 l; + struct omap_musb_board_data *data = board_data; #if defined(CONFIG_ARCH_OMAP2430) omap_cfg_reg(AE5_2430_USB0HS_STP); @@ -235,7 +236,15 @@ int __init musb_platform_init(struct musb *musb) musb_writel(musb->mregs, OTG_SYSCONFIG, l); l = musb_readl(musb->mregs, OTG_INTERFSEL); - l |= ULPI_12PIN; + + if (data->interface_type == MUSB_INTERFACE_UTMI) { + /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ + l &= ~ULPI_12PIN; /* Disable ULPI */ + l |= UTMI_8BIT; /* Enable UTMI */ + } else { + l |= ULPI_12PIN; + } + musb_writel(musb->mregs, OTG_INTERFSEL, l); pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 60d3938cafcf..05c077f8f9ac 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -1104,7 +1104,7 @@ err: return -ENODEV; } -int __init musb_platform_init(struct musb *musb) +int __init musb_platform_init(struct musb *musb, void *board_data) { struct platform_device *pdev; struct resource *mem; -- cgit v1.2.3-58-ga151 From c71b1b9c21fa8f73028ebe82b17f738d3bf327f5 Mon Sep 17 00:00:00 2001 From: Maulik Mankad Date: Fri, 12 Mar 2010 10:29:08 +0200 Subject: USB: MUSB: Build MUSB driver for OMAP4 This patch updates the Makefile to build the MUSB driver for OMAP4. It also sets the Kconfig options for OMAP4. Signed-off-by: Maulik Mankad Cc: David Brownell Cc: Sergei Shtylyov Cc: Olof Johansson Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/Kconfig | 6 +++++- drivers/usb/musb/Makefile | 4 ++++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 07fe490b44d8..cfd38edfcf9e 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -38,6 +38,7 @@ config USB_MUSB_SOC default y if ARCH_DAVINCI default y if ARCH_OMAP2430 default y if ARCH_OMAP3 + default y if ARCH_OMAP4 default y if (BF54x && !BF544) default y if (BF52x && !BF522 && !BF523) @@ -50,6 +51,9 @@ comment "OMAP 243x high speed USB support" comment "OMAP 343x high speed USB support" depends on USB_MUSB_HDRC && ARCH_OMAP3 +comment "OMAP 44xx high speed USB support" + depends on USB_MUSB_HDRC && ARCH_OMAP4 + comment "Blackfin high speed USB Support" depends on USB_MUSB_HDRC && ((BF54x && !BF544) || (BF52x && !BF522 && !BF523)) @@ -153,7 +157,7 @@ config MUSB_PIO_ONLY config USB_INVENTRA_DMA bool depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY - default ARCH_OMAP2430 || ARCH_OMAP3 || BLACKFIN + default ARCH_OMAP2430 || ARCH_OMAP3 || BLACKFIN || ARCH_OMAP4 help Enable DMA transfers using Mentor's engine. diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index 3a485dabebbb..db7933de17b5 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -22,6 +22,10 @@ ifeq ($(CONFIG_ARCH_OMAP3430),y) musb_hdrc-objs += omap2430.o endif +ifeq ($(CONFIG_ARCH_OMAP4),y) + musb_hdrc-objs += omap2430.o +endif + ifeq ($(CONFIG_BF54x),y) musb_hdrc-objs += blackfin.o endif -- cgit v1.2.3-58-ga151 From fb9c58edf13fc30d160ce52018576a1d7d45d795 Mon Sep 17 00:00:00 2001 From: Maulik Mankad Date: Fri, 12 Mar 2010 10:29:09 +0200 Subject: USB: MUSB: Add OMAP4 support in MUSB driver This patch adds CONFIG_ARCH_OMAP4 macro within MUSB driver. Signed-off-by: Maulik Mankad Cc: David Brownell Cc: Sergei Shtylyov Cc: Olof Johansson Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 6 ++++-- drivers/usb/musb/musb_core.h | 6 ++++-- 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 633272e6d321..28ff0330bcea 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -985,7 +985,8 @@ static void musb_shutdown(struct platform_device *pdev) * more than selecting one of a bunch of predefined configurations. */ #if defined(CONFIG_USB_TUSB6010) || \ - defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) + defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) \ + || defined(CONFIG_ARCH_OMAP4) static ushort __initdata fifo_mode = 4; #else static ushort __initdata fifo_mode = 2; @@ -1456,7 +1457,8 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) /*-------------------------------------------------------------------------*/ -#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3430) +#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3430) || \ + defined(CONFIG_ARCH_OMAP4) static irqreturn_t generic_interrupt(int irq, void *__hci) { diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 136f71cbd5e3..b22d02dea7d3 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -213,7 +213,8 @@ enum musb_g_ep0_state { */ #if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP2430) \ - || defined(CONFIG_ARCH_OMAP3430) || defined(CONFIG_BLACKFIN) + || defined(CONFIG_ARCH_OMAP3430) || defined(CONFIG_BLACKFIN) \ + || defined(CONFIG_ARCH_OMAP4) /* REVISIT indexed access seemed to * misbehave (on DaVinci) for at least peripheral IN ... */ @@ -596,7 +597,8 @@ extern void musb_hnp_stop(struct musb *musb); extern int musb_platform_set_mode(struct musb *musb, u8 musb_mode); #if defined(CONFIG_USB_TUSB6010) || defined(CONFIG_BLACKFIN) || \ - defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) + defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \ + defined(CONFIG_ARCH_OMAP4) extern void musb_platform_try_idle(struct musb *musb, unsigned long timeout); #else #define musb_platform_try_idle(x, y) do {} while (0) -- cgit v1.2.3-58-ga151 From 6ddc6dae4ab559b648bc348e3a48e113e92ab4a2 Mon Sep 17 00:00:00 2001 From: Cliff Cai Date: Fri, 12 Mar 2010 10:29:10 +0200 Subject: USB: musb: allow the Blackfin vrsel gpio to be active low Rather than hardcoding the gpio levels for vrsel, allow the platform resources to handle this so boards can be active high or low. Signed-off-by: Cliff Cai Signed-off-by: Mike Frysinger Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 8 ++++---- include/linux/usb/musb.h | 1 + 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 7c71eb422a9c..eb4392f904e4 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -238,10 +238,10 @@ static void bfin_vbus_power(struct musb *musb, int is_on, int sleeping) static void bfin_set_vbus(struct musb *musb, int is_on) { - if (is_on) - gpio_set_value(musb->config->gpio_vrsel, 1); - else - gpio_set_value(musb->config->gpio_vrsel, 0); + int value = musb->config->gpio_vrsel_active; + if (!is_on) + value = !value; + gpio_set_value(musb->config->gpio_vrsel, value); DBG(1, "VBUS %s, devctl %02x " /* otg %3x conf %08x prcm %08x */ "\n", diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index f3d68f62dae8..fbb83fe21851 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -88,6 +88,7 @@ struct musb_hdrc_config { #ifdef CONFIG_BLACKFIN /* A GPIO controlling VRSEL in Blackfin */ unsigned int gpio_vrsel; + unsigned int gpio_vrsel_active; #endif }; -- cgit v1.2.3-58-ga151 From 7f7f9e2a5af9e30c6a0c6743ac874f67e2ef4b72 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 12 Mar 2010 10:29:11 +0200 Subject: usb: musb: add debugfs support for now only a simple register dump entry (which can be rather useful on debugging) and a way to start test modes. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/Makefile | 4 + drivers/usb/musb/musb_core.c | 5 + drivers/usb/musb/musb_debug.h | 13 ++ drivers/usb/musb/musb_debugfs.c | 295 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 317 insertions(+) create mode 100644 drivers/usb/musb/musb_debugfs.c (limited to 'drivers') diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index db7933de17b5..a1677f9955aa 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -42,6 +42,10 @@ ifeq ($(CONFIG_USB_MUSB_HDRC_HCD),y) musb_hdrc-objs += musb_virthub.o musb_host.o endif +ifeq ($(CONFIG_DEBUG_FS),y) + musb_hdrc-objs += musb_debugfs.o +endif + # the kconfig must guarantee that only one of the # possible I/O schemes will be enabled at a time ... # PIO only, or DMA (several potential schemes). diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 28ff0330bcea..3466cd53e9c8 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2054,6 +2054,10 @@ bad_config: if (status < 0) goto fail3; + status = musb_init_debugfs(musb); + if (status < 0) + goto fail2; + #ifdef CONFIG_SYSFS status = sysfs_create_group(&musb->controller->kobj, &musb_attr_group); if (status) @@ -2150,6 +2154,7 @@ static int __exit musb_remove(struct platform_device *pdev) * - Peripheral mode: peripheral is deactivated (or never-activated) * - OTG mode: both roles are deactivated (or never-activated) */ + musb_exit_debugfs(musb); musb_shutdown(pdev); #ifdef CONFIG_USB_MUSB_HDRC_HCD if (musb->board_mode == MUSB_HOST) diff --git a/drivers/usb/musb/musb_debug.h b/drivers/usb/musb/musb_debug.h index 9fc1db44c72c..d73afdbde3ee 100644 --- a/drivers/usb/musb/musb_debug.h +++ b/drivers/usb/musb/musb_debug.h @@ -59,4 +59,17 @@ static inline int _dbg_level(unsigned l) extern const char *otg_state_string(struct musb *); +#ifdef CONFIG_DEBUG_FS +extern int musb_init_debugfs(struct musb *musb); +extern void musb_exit_debugfs(struct musb *musb); +#else +static inline int musb_init_debugfs(struct musb *musb) +{ + return 0; +} +static inline void musb_exit_debugfs(struct musb *musb) +{ +} +#endif + #endif /* __MUSB_LINUX_DEBUG_H__ */ diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c new file mode 100644 index 000000000000..b6a27bab223a --- /dev/null +++ b/drivers/usb/musb/musb_debugfs.c @@ -0,0 +1,295 @@ +/* + * MUSB OTG driver debugfs support + * + * Copyright 2010 Nokia Corporation + * Contact: Felipe Balbi + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_ARM +#include +#include +#include +#endif + +#include + +#include "musb_core.h" +#include "musb_debug.h" + +#ifdef CONFIG_ARCH_DAVINCI +#include "davinci.h" +#endif + +struct musb_register_map { + char *name; + unsigned offset; + unsigned size; +}; + +static const struct musb_register_map musb_regmap[] = { + { "FAddr", 0x00, 8 }, + { "Power", 0x01, 8 }, + { "Frame", 0x0c, 16 }, + { "Index", 0x0e, 8 }, + { "Testmode", 0x0f, 8 }, + { "TxMaxPp", 0x10, 16 }, + { "TxCSRp", 0x12, 16 }, + { "RxMaxPp", 0x14, 16 }, + { "RxCSR", 0x16, 16 }, + { "RxCount", 0x18, 16 }, + { "ConfigData", 0x1f, 8 }, + { "DevCtl", 0x60, 8 }, + { "MISC", 0x61, 8 }, + { "TxFIFOsz", 0x62, 8 }, + { "RxFIFOsz", 0x63, 8 }, + { "TxFIFOadd", 0x64, 16 }, + { "RxFIFOadd", 0x66, 16 }, + { "VControl", 0x68, 32 }, + { "HWVers", 0x6C, 16 }, + { "EPInfo", 0x78, 8 }, + { "RAMInfo", 0x79, 8 }, + { "LinkInfo", 0x7A, 8 }, + { "VPLen", 0x7B, 8 }, + { "HS_EOF1", 0x7C, 8 }, + { "FS_EOF1", 0x7D, 8 }, + { "LS_EOF1", 0x7E, 8 }, + { "SOFT_RST", 0x7F, 8 }, + { "DMA_CNTLch0", 0x204, 16 }, + { "DMA_ADDRch0", 0x208, 16 }, + { "DMA_COUNTch0", 0x20C, 16 }, + { "DMA_CNTLch1", 0x214, 16 }, + { "DMA_ADDRch1", 0x218, 16 }, + { "DMA_COUNTch1", 0x21C, 16 }, + { "DMA_CNTLch2", 0x224, 16 }, + { "DMA_ADDRch2", 0x228, 16 }, + { "DMA_COUNTch2", 0x22C, 16 }, + { "DMA_CNTLch3", 0x234, 16 }, + { "DMA_ADDRch3", 0x238, 16 }, + { "DMA_COUNTch3", 0x23C, 16 }, + { "DMA_CNTLch4", 0x244, 16 }, + { "DMA_ADDRch4", 0x248, 16 }, + { "DMA_COUNTch4", 0x24C, 16 }, + { "DMA_CNTLch5", 0x254, 16 }, + { "DMA_ADDRch5", 0x258, 16 }, + { "DMA_COUNTch5", 0x25C, 16 }, + { "DMA_CNTLch6", 0x264, 16 }, + { "DMA_ADDRch6", 0x268, 16 }, + { "DMA_COUNTch6", 0x26C, 16 }, + { "DMA_CNTLch7", 0x274, 16 }, + { "DMA_ADDRch7", 0x278, 16 }, + { "DMA_COUNTch7", 0x27C, 16 }, + { } /* Terminating Entry */ +}; + +static struct dentry *musb_debugfs_root; + +static int musb_regdump_show(struct seq_file *s, void *unused) +{ + struct musb *musb = s->private; + unsigned i; + + seq_printf(s, "MUSB (M)HDRC Register Dump\n"); + + for (i = 0; i < ARRAY_SIZE(musb_regmap); i++) { + switch (musb_regmap[i].size) { + case 8: + seq_printf(s, "%-12s: %02x\n", musb_regmap[i].name, + musb_readb(musb->mregs, musb_regmap[i].offset)); + break; + case 16: + seq_printf(s, "%-12s: %04x\n", musb_regmap[i].name, + musb_readw(musb->mregs, musb_regmap[i].offset)); + break; + case 32: + seq_printf(s, "%-12s: %08x\n", musb_regmap[i].name, + musb_readl(musb->mregs, musb_regmap[i].offset)); + break; + } + } + + return 0; +} + +static int musb_regdump_open(struct inode *inode, struct file *file) +{ + return single_open(file, musb_regdump_show, inode->i_private); +} + +static int musb_test_mode_show(struct seq_file *s, void *unused) +{ + struct musb *musb = s->private; + unsigned test; + + test = musb_readb(musb->mregs, MUSB_TESTMODE); + + if (test & MUSB_TEST_FORCE_HOST) + seq_printf(s, "force host\n"); + + if (test & MUSB_TEST_FIFO_ACCESS) + seq_printf(s, "fifo access\n"); + + if (test & MUSB_TEST_FORCE_FS) + seq_printf(s, "force full-speed\n"); + + if (test & MUSB_TEST_FORCE_HS) + seq_printf(s, "force high-speed\n"); + + if (test & MUSB_TEST_PACKET) + seq_printf(s, "test packet\n"); + + if (test & MUSB_TEST_K) + seq_printf(s, "test K\n"); + + if (test & MUSB_TEST_J) + seq_printf(s, "test J\n"); + + if (test & MUSB_TEST_SE0_NAK) + seq_printf(s, "test SE0 NAK\n"); + + return 0; +} + +static const struct file_operations musb_regdump_fops = { + .open = musb_regdump_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int musb_test_mode_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + + return single_open(file, musb_test_mode_show, inode->i_private); +} + +static ssize_t musb_test_mode_write(struct file *file, + const char __user *ubuf, size_t count, loff_t *ppos) +{ + struct musb *musb = file->private_data; + u8 test = 0; + char buf[18]; + + memset(buf, 0x00, sizeof(buf)); + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + return -EFAULT; + + if (!strncmp(buf, "force host", 9)) + test = MUSB_TEST_FORCE_HOST; + + if (!strncmp(buf, "fifo access", 11)) + test = MUSB_TEST_FIFO_ACCESS; + + if (!strncmp(buf, "force full-speed", 15)) + test = MUSB_TEST_FORCE_FS; + + if (!strncmp(buf, "force high-speed", 15)) + test = MUSB_TEST_FORCE_HS; + + if (!strncmp(buf, "test packet", 10)) { + test = MUSB_TEST_PACKET; + musb_load_testpacket(musb); + } + + if (!strncmp(buf, "test K", 6)) + test = MUSB_TEST_K; + + if (!strncmp(buf, "test J", 6)) + test = MUSB_TEST_J; + + if (!strncmp(buf, "test SE0 NAK", 12)) + test = MUSB_TEST_SE0_NAK; + + musb_writeb(musb->mregs, MUSB_TESTMODE, test); + + return count; +} + +static const struct file_operations musb_test_mode_fops = { + .open = musb_test_mode_open, + .write = musb_test_mode_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +int __init musb_init_debugfs(struct musb *musb) +{ + struct dentry *root; + struct dentry *file; + int ret; + + root = debugfs_create_dir("musb", NULL); + if (IS_ERR(root)) { + ret = PTR_ERR(root); + goto err0; + } + + file = debugfs_create_file("regdump", S_IRUGO, root, musb, + &musb_regdump_fops); + if (IS_ERR(file)) { + ret = PTR_ERR(file); + goto err1; + } + + file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, + root, musb, &musb_test_mode_fops); + if (IS_ERR(file)) { + ret = PTR_ERR(file); + goto err1; + } + + musb_debugfs_root = root; + + return 0; + +err1: + debugfs_remove_recursive(root); + +err0: + return ret; +} + +void __exit musb_exit_debugfs(struct musb *musb) +{ + debugfs_remove_recursive(musb_debugfs_root); +} -- cgit v1.2.3-58-ga151 From ca4b2532fb0e2d62370d9825147ffa9b9d9e3880 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 12 Mar 2010 10:29:12 +0200 Subject: usb: musb: gadget: support musb-specific test modes we can support the musb-specific test modes on the vendor specific range of test selector as stated on USB Specification Table 9-7 Test Mode Selectors. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_gadget_ep0.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 53d06451f820..21b9788d0243 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -351,6 +351,31 @@ __acquires(musb->lock) musb->test_mode_nr = MUSB_TEST_PACKET; break; + + case 0xc0: + /* TEST_FORCE_HS */ + pr_debug("TEST_FORCE_HS\n"); + musb->test_mode_nr = + MUSB_TEST_FORCE_HS; + break; + case 0xc1: + /* TEST_FORCE_FS */ + pr_debug("TEST_FORCE_FS\n"); + musb->test_mode_nr = + MUSB_TEST_FORCE_FS; + break; + case 0xc2: + /* TEST_FIFO_ACCESS */ + pr_debug("TEST_FIFO_ACCESS\n"); + musb->test_mode_nr = + MUSB_TEST_FIFO_ACCESS; + break; + case 0xc3: + /* TEST_FORCE_HOST */ + pr_debug("TEST_FORCE_HOST\n"); + musb->test_mode_nr = + MUSB_TEST_FORCE_HOST; + break; default: goto stall; } -- cgit v1.2.3-58-ga151 From ddb495d4d81dee4fdd96ae397d60ddefd65204c6 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 12 Mar 2010 10:29:13 +0200 Subject: usb: musb: hsdma: use musb_read/writel ... and simplify the was we read/write from/to DMA COUNT register. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musbhsdma.h | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musbhsdma.h b/drivers/usb/musb/musbhsdma.h index 613f95a058f7..f763d62f151c 100644 --- a/drivers/usb/musb/musbhsdma.h +++ b/drivers/usb/musb/musbhsdma.h @@ -102,26 +102,16 @@ static inline void musb_write_hsdma_addr(void __iomem *mbase, static inline u32 musb_read_hsdma_count(void __iomem *mbase, u8 bchannel) { - u32 count = musb_readw(mbase, + return musb_readl(mbase, MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH)); - - count = count << 16; - - count |= musb_readw(mbase, - MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW)); - - return count; } static inline void musb_write_hsdma_count(void __iomem *mbase, u8 bchannel, u32 len) { - musb_writew(mbase, - MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW), - ((u16)((u32) len & 0xFFFF))); - musb_writew(mbase, + musb_writel(mbase, MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH), - ((u16)(((u32) len >> 16) & 0xFFFF))); + len); } #endif /* CONFIG_BLACKFIN */ -- cgit v1.2.3-58-ga151 From aae86e8adb3bbf5256eebe76500cf7254365753c Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Mon, 15 Mar 2010 21:38:31 +0100 Subject: USB: f_mass_storage: dynamic buffers for better alignment "Static" buffers in fsg_buffhd structure (ie. fields which are arrays rather then pointers to dynamically allocated memory) are not aligned to any "big" power of two which may lead to poor DMA performance (copying "by hand" of head or tail) or no DMA at all even if otherwise hardware supports it. Therefore, this patch makes mass storage function use kmalloc()ed buffers which are (because of their size) page aligned (which should be enough for any hardware). Signed-off-by: Michal Nazarewicz Cc: Kyungmin Park Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_mass_storage.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index f4911c09022e..218f51db9721 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -302,7 +302,6 @@ static const char fsg_string_interface[] = "Mass Storage"; #define FSG_NO_INTR_EP 1 -#define FSG_BUFFHD_STATIC_BUFFER 1 #define FSG_NO_DEVICE_STRINGS 1 #define FSG_NO_OTG 1 #define FSG_NO_INTR_EP 1 @@ -2762,13 +2761,19 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, /* Data buffers cyclic list */ - /* Buffers in buffhds are static -- no need for additional - * allocation. */ bh = common->buffhds; - i = FSG_NUM_BUFFERS - 1; + i = FSG_NUM_BUFFERS; + goto buffhds_first_it; do { bh->next = bh + 1; - } while (++bh, --i); + ++bh; +buffhds_first_it: + bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL); + if (unlikely(!bh->buf)) { + rc = -ENOMEM; + goto error_release; + } + } while (--i); bh->next = common->buffhds; @@ -2871,6 +2876,7 @@ static void fsg_common_release(struct kref *ref) container_of(ref, struct fsg_common, ref); unsigned i = common->nluns; struct fsg_lun *lun = common->luns; + struct fsg_buffhd *bh; /* If the thread isn't already dead, tell it to exit now */ if (common->state != FSG_STATE_TERMINATED) { @@ -2892,6 +2898,13 @@ static void fsg_common_release(struct kref *ref) } kfree(common->luns); + + i = FSG_NUM_BUFFERS; + bh = common->buffhds; + do { + kfree(bh->buf); + } while (++bh, --i); + if (common->free_storage_on_release) kfree(common); } -- cgit v1.2.3-58-ga151 From 92d2c5e4badc622999d3b17e6dfbf6babacb52f6 Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Tue, 16 Mar 2010 16:05:44 -0500 Subject: usb-console: pass baud from console to the initial tty open The usb console code has had a long standing problem of not being able to pass the baud rate from the kernel argument console=ttyUSB0,BAUD down to the initial tty open, unless you were willing to settle for 9600 baud. The solution is to directly use tty_init_termios() in usb_console_setup() as this will preserve any changes to the initial termios setting on future opens. CC: Alan Cox CC: Alan Stern Signed-off-by: Jason Wessel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/console.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 4ea64fef6718..1ee6b2ab0f89 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -66,7 +66,7 @@ static int usb_console_setup(struct console *co, char *options) struct usb_serial_port *port; int retval; struct tty_struct *tty = NULL; - struct ktermios *termios = NULL, dummy; + struct ktermios dummy; dbg("%s", __func__); @@ -141,15 +141,14 @@ static int usb_console_setup(struct console *co, char *options) goto reset_open_count; } kref_init(&tty->kref); - termios = kzalloc(sizeof(*termios), GFP_KERNEL); - if (!termios) { + tty_port_tty_set(&port->port, tty); + tty->driver = usb_serial_tty_driver; + tty->index = co->index; + if (tty_init_termios(tty)) { retval = -ENOMEM; err("no more memory"); goto free_tty; } - memset(&dummy, 0, sizeof(struct ktermios)); - tty->termios = termios; - tty_port_tty_set(&port->port, tty); } /* only call the device specific open if this @@ -161,16 +160,16 @@ static int usb_console_setup(struct console *co, char *options) if (retval) { err("could not open USB console port"); - goto free_termios; + goto fail; } if (serial->type->set_termios) { - termios->c_cflag = cflag; - tty_termios_encode_baud_rate(termios, baud, baud); + tty->termios->c_cflag = cflag; + tty_termios_encode_baud_rate(tty->termios, baud, baud); + memset(&dummy, 0, sizeof(struct ktermios)); serial->type->set_termios(tty, port, &dummy); tty_port_tty_set(&port->port, NULL); - kfree(termios); kfree(tty); } set_bit(ASYNCB_INITIALIZED, &port->port.flags); @@ -185,8 +184,7 @@ static int usb_console_setup(struct console *co, char *options) mutex_unlock(&serial->disc_mutex); return retval; - free_termios: - kfree(termios); + fail: tty_port_tty_set(&port->port, NULL); free_tty: kfree(tty); -- cgit v1.2.3-58-ga151 From 2a1e7d5d54c1c046c1fe47dffd119b45087c6de6 Mon Sep 17 00:00:00 2001 From: Vijay Kumar Date: Wed, 10 Mar 2010 21:17:56 +0530 Subject: USB Serial Driver: ZIO Motherboard Add ZIO Motherboard USB serial interface driver. Signed-off-by: Vijay Kumar B. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 8 ++++++ drivers/usb/serial/Makefile | 1 + drivers/usb/serial/zio.c | 64 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 73 insertions(+) create mode 100644 drivers/usb/serial/zio.c (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index a0ecb42cb33a..5f777c20f2e2 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -619,6 +619,14 @@ config USB_SERIAL_VIVOPAY_SERIAL To compile this driver as a module, choose M here: the module will be called vivopay-serial. +config USB_SERIAL_ZIO + tristate "ZIO Motherboard USB serial interface driver" + help + Say Y here if you want to use ZIO Motherboard. + + To compile this driver as a module, choose M here: the + module will be called zio. + config USB_SERIAL_DEBUG tristate "USB Debugging Device" help diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index 83c9e431a568..3203614e3892 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile @@ -57,4 +57,5 @@ obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o obj-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda.o obj-$(CONFIG_USB_SERIAL_VIVOPAY_SERIAL) += vivopay-serial.o +obj-$(CONFIG_USB_SERIAL_ZIO) += zio.o diff --git a/drivers/usb/serial/zio.c b/drivers/usb/serial/zio.c new file mode 100644 index 000000000000..f57967278833 --- /dev/null +++ b/drivers/usb/serial/zio.c @@ -0,0 +1,64 @@ +/* + * ZIO Motherboard USB driver + * + * Copyright (C) 2010 Zilogic Systems + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include + +static const struct usb_device_id id_table[] = { + { USB_DEVICE(0x1CBE, 0x0103) }, + { }, +}; +MODULE_DEVICE_TABLE(usb, id_table); + +static struct usb_driver zio_driver = { + .name = "zio", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, + .no_dynamic_id = 1, +}; + +static struct usb_serial_driver zio_device = { + .driver = { + .owner = THIS_MODULE, + .name = "zio", + }, + .id_table = id_table, + .usb_driver = &zio_driver, + .num_ports = 1, +}; + +static int __init zio_init(void) +{ + int retval; + + retval = usb_serial_register(&zio_device); + if (retval) + return retval; + retval = usb_register(&zio_driver); + if (retval) + usb_serial_deregister(&zio_device); + return retval; +} + +static void __exit zio_exit(void) +{ + usb_deregister(&zio_driver); + usb_serial_deregister(&zio_device); +} + +module_init(zio_init); +module_exit(zio_exit); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-58-ga151 From 7f0ae3a8eeb7f231dc99cee7c871ba64e07ebefe Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 25 Mar 2010 11:29:16 -0700 Subject: usb: fix serial build when SYSRQ is disabled Fix build error when CONFIG_MAGIC_SYSRQ is not enabled: drivers/usb/serial/generic.c:566: error: implicit declaration of function 'handle_sysrq' Signed-off-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index ba61c745df0b..a5e610976689 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -558,6 +559,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) } } +#ifdef CONFIG_MAGIC_SYSRQ int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, unsigned int ch) { @@ -571,6 +573,13 @@ int usb_serial_handle_sysrq_char(struct tty_struct *tty, } return 0; } +#else +int usb_serial_handle_sysrq_char(struct tty_struct *tty, + struct usb_serial_port *port, unsigned int ch) +{ + return 0; +} +#endif EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); int usb_serial_handle_break(struct usb_serial_port *port) -- cgit v1.2.3-58-ga151 From 317149c655defedfaf432143b86a720cfc12a424 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 29 Mar 2010 12:03:17 +0200 Subject: USB: Add a new quirk: USB_QUIRK_HONOR_BNUMINTERFACES Add a new quirk USB_QUIRK_HONOR_BNUMINTERFACES, when this quirk is set and a device has more interface descriptors in a configuration then it claims to have in config->bNumInterfaces, ignore all additional interfaces. This is needed for devices which try to hide unused interfaces by only lowering config->bNumInterfaces, and which can't handle if you try to talk to the "hidden" interfaces. Signed-off-by: Hans de Goede Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 16 ++++++++++++++-- drivers/usb/core/quirks.c | 4 ++++ include/linux/usb/quirks.h | 4 ++++ 3 files changed, 22 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 77e0dda3a2fb..16c1157be3fc 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -1,6 +1,7 @@ #include #include #include +#include #include #include #include @@ -479,9 +480,10 @@ skip_to_next_interface_descriptor: return buffer - buffer0 + i; } -static int usb_parse_configuration(struct device *ddev, int cfgidx, +static int usb_parse_configuration(struct usb_device *dev, int cfgidx, struct usb_host_config *config, unsigned char *buffer, int size) { + struct device *ddev = &dev->dev; unsigned char *buffer0 = buffer; int cfgno; int nintf, nintf_orig; @@ -550,6 +552,16 @@ static int usb_parse_configuration(struct device *ddev, int cfgidx, } inum = d->bInterfaceNumber; + + if ((dev->quirks & USB_QUIRK_HONOR_BNUMINTERFACES) && + n >= nintf_orig) { + dev_warn(ddev, "config %d has more interface " + "descriptors, than it declares in " + "bNumInterfaces, ignoring interface " + "number: %d\n", cfgno, inum); + continue; + } + if (inum >= nintf_orig) dev_warn(ddev, "config %d has an invalid " "interface number: %d but max is %d\n", @@ -801,7 +813,7 @@ int usb_get_configuration(struct usb_device *dev) dev->rawdescriptors[cfgno] = bigbuffer; - result = usb_parse_configuration(&dev->dev, cfgno, + result = usb_parse_configuration(dev, cfgno, &dev->config[cfgno], bigbuffer, length); if (result < 0) { ++cfgno; diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index f073c5cb4e7b..f22d03df8b17 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -71,6 +71,10 @@ static const struct usb_device_id usb_quirk_list[] = { /* SKYMEDI USB_DRIVE */ { USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME }, + /* BUILDWIN Photo Frame */ + { USB_DEVICE(0x1908, 0x1315), .driver_info = + USB_QUIRK_HONOR_BNUMINTERFACES }, + /* INTEL VALUE SSD */ { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME }, diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h index 0a555dd131fc..16b7f3347545 100644 --- a/include/linux/usb/quirks.h +++ b/include/linux/usb/quirks.h @@ -22,4 +22,8 @@ /*device will morph if reset, don't use reset for handling errors */ #define USB_QUIRK_RESET_MORPHS 0x00000010 +/* device has more interface descriptions than the bNumInterfaces count, + and can't handle talking to these interfaces */ +#define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020 + #endif /* __LINUX_USB_QUIRKS_H */ -- cgit v1.2.3-58-ga151 From bbcb2b907415a90334521a31a8767cd77462c716 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:37 +0100 Subject: USB: serial: allow drivers to define bulk buffer sizes Allow drivers to define custom bulk in/out buffer sizes in struct usb_serial_driver. If not set, fall back to the default buffer size which matches the endpoint size. Three drivers are currently freeing the pre-allocated buffers and allocating larger ones to achieve this at port probe (ftdi_sio) or even at port open (ipaq and iuu_phoenix), which needless to say is suboptimal. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 16 +--------------- drivers/usb/serial/ipaq.c | 28 ++-------------------------- drivers/usb/serial/iuu_phoenix.c | 30 ++---------------------------- drivers/usb/serial/usb-serial.c | 8 ++++++-- include/linux/usb/serial.h | 5 +++++ 5 files changed, 16 insertions(+), 71 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 46a88ae9c46a..ab4ad18d6ef3 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -768,9 +768,6 @@ static const char *ftdi_chip_name[] = { }; -/* Constants for read urb and write urb */ -#define BUFSZ 512 - /* Used for TIOCMIWAIT */ #define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD) #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) @@ -821,6 +818,7 @@ static struct usb_serial_driver ftdi_sio_device = { .usb_driver = &ftdi_driver, .id_table = id_table_combined, .num_ports = 1, + .bulk_in_size = 512, .probe = ftdi_sio_probe, .port_probe = ftdi_sio_port_probe, .port_remove = ftdi_sio_port_remove, @@ -1552,18 +1550,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) if (quirk && quirk->port_probe) quirk->port_probe(priv); - /* Increase the size of read buffers */ - kfree(port->bulk_in_buffer); - port->bulk_in_buffer = kmalloc(BUFSZ, GFP_KERNEL); - if (!port->bulk_in_buffer) { - kfree(priv); - return -ENOMEM; - } - if (port->read_urb) { - port->read_urb->transfer_buffer = port->bulk_in_buffer; - port->read_urb->transfer_buffer_length = BUFSZ; - } - priv->port = port; /* Free port's existing write urb and transfer buffer. */ diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index 3fea9298eb15..87b11461bf11 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -571,6 +571,8 @@ static struct usb_serial_driver ipaq_device = { .description = "PocketPC PDA", .usb_driver = &ipaq_driver, .id_table = ipaq_id_table, + .bulk_in_size = URBDATA_SIZE, + .bulk_out_size = URBDATA_SIZE, .open = ipaq_open, .close = ipaq_close, .attach = ipaq_startup, @@ -628,32 +630,6 @@ static int ipaq_open(struct tty_struct *tty, priv->free_len += PACKET_SIZE; } - /* - * Lose the small buffers usbserial provides. Make larger ones. - */ - - kfree(port->bulk_in_buffer); - kfree(port->bulk_out_buffer); - /* make sure the generic serial code knows */ - port->bulk_out_buffer = NULL; - - port->bulk_in_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); - if (port->bulk_in_buffer == NULL) - goto enomem; - - port->bulk_out_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); - if (port->bulk_out_buffer == NULL) { - /* the buffer is useless, free it */ - kfree(port->bulk_in_buffer); - port->bulk_in_buffer = NULL; - goto enomem; - } - port->read_urb->transfer_buffer = port->bulk_in_buffer; - port->write_urb->transfer_buffer = port->bulk_out_buffer; - port->read_urb->transfer_buffer_length = URBDATA_SIZE; - port->bulk_out_size = port->write_urb->transfer_buffer_length - = URBDATA_SIZE; - msleep(1000*initial_wait); /* diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 43f13cf2f016..74551cb2e8ee 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -1044,34 +1044,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) if (buf == NULL) return -ENOMEM; - /* fixup the endpoint buffer size */ - kfree(port->bulk_out_buffer); - port->bulk_out_buffer = kmalloc(512, GFP_KERNEL); - port->bulk_out_size = 512; - kfree(port->bulk_in_buffer); - port->bulk_in_buffer = kmalloc(512, GFP_KERNEL); - port->bulk_in_size = 512; - - if (!port->bulk_out_buffer || !port->bulk_in_buffer) { - kfree(port->bulk_out_buffer); - kfree(port->bulk_in_buffer); - kfree(buf); - return -ENOMEM; - } - - usb_fill_bulk_urb(port->write_urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - port->bulk_out_buffer, 512, - NULL, NULL); - - - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->bulk_in_buffer, 512, - NULL, NULL); - priv->poll = 0; /* initialize writebuf */ @@ -1277,6 +1249,8 @@ static struct usb_serial_driver iuu_device = { }, .id_table = id_table, .num_ports = 1, + .bulk_in_size = 512, + .bulk_out_size = 512, .port_probe = iuu_create_sysfs_attrs, .port_remove = iuu_remove_sysfs_attrs, .open = iuu_open, diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index f3f65171de38..538924627eba 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -901,7 +901,9 @@ int usb_serial_probe(struct usb_interface *interface, dev_err(&interface->dev, "No free urbs available\n"); goto probe_error; } - buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); + buffer_size = serial->type->bulk_in_size; + if (!buffer_size) + buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); port->bulk_in_size = buffer_size; port->bulk_in_endpointAddress = endpoint->bEndpointAddress; port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); @@ -927,7 +929,9 @@ int usb_serial_probe(struct usb_interface *interface, } if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL)) goto probe_error; - buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); + buffer_size = serial->type->bulk_out_size; + if (!buffer_size) + buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); port->bulk_out_size = buffer_size; port->bulk_out_endpointAddress = endpoint->bEndpointAddress; port->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index b7682fed1d9c..ab311dab3383 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -179,6 +179,8 @@ static inline void usb_set_serial_data(struct usb_serial *serial, void *data) * @id_table: pointer to a list of usb_device_id structures that define all * of the devices this structure can support. * @num_ports: the number of different ports this device will have. + * @bulk_in_size: bytes to allocate for bulk-in buffer (0 = end-point size) + * @bulk_out_size: bytes to allocate for bulk-out buffer (0 = end-point size) * @calc_num_ports: pointer to a function to determine how many ports this * device has dynamically. It will be called after the probe() * callback is called, but before attach() @@ -223,6 +225,9 @@ struct usb_serial_driver { struct usb_dynids dynids; int max_in_flight_urbs; + size_t bulk_in_size; + size_t bulk_out_size; + int (*probe)(struct usb_serial *serial, const struct usb_device_id *id); int (*attach)(struct usb_serial *serial); int (*calc_num_ports) (struct usb_serial *serial); -- cgit v1.2.3-58-ga151 From d4e598f65de351eb66a90889d9ceaaca472fda40 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:38 +0100 Subject: USB: cp210x: increase the bulk-out buffer size to 256 byte Increase the bulk-out buffer size from 64 to 256 byte. This gives a significant increase in throughput already at 1Mbaud (e.g. 710 instead of 640 KB/s) as well as lowered CPU usage. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index ec9b0449ccf6..e3440003810e 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -138,6 +138,7 @@ static struct usb_serial_driver cp210x_device = { .usb_driver = &cp210x_driver, .id_table = id_table, .num_ports = 1, + .bulk_out_size = 256, .open = cp210x_open, .close = cp210x_close, .break_ctl = cp210x_break_ctl, -- cgit v1.2.3-58-ga151 From aea006b93a59864473866e4b1bdb51deea593798 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:39 +0100 Subject: USB: cp210x: increase bulk-in buffer size to 256 byte The cp210x requires a bulk-in buffer larger than endpoint size to keep up at high baudrates without loosing data. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index e3440003810e..705a7e7a9746 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -138,6 +138,7 @@ static struct usb_serial_driver cp210x_device = { .usb_driver = &cp210x_driver, .id_table = id_table, .num_ports = 1, + .bulk_in_size = 256, .bulk_out_size = 256, .open = cp210x_open, .close = cp210x_close, -- cgit v1.2.3-58-ga151 From 3efeaff6298290b36499532f0b4c87aa4bae8aef Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:40 +0100 Subject: USB: pl2303: increase the bulk-out buffer size to 256 byte Increase the bulk-out buffer size from 64 to 256 byte. This gives a significant increase in throughput already at 1Mbaud as well as lowered CPU usage. The buffer is big enough to keep up also at 3Mbaud (128b would not suffice). 64b 256b 921k: 640 KB/s 870 KB/s 3M: 640 KB/s 2520 KB/s Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index b10b0efe3e06..03fe472fee32 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -1170,6 +1170,7 @@ static struct usb_serial_driver pl2303_device = { .id_table = id_table, .usb_driver = &pl2303_driver, .num_ports = 1, + .bulk_out_size = 256, .open = pl2303_open, .close = pl2303_close, .dtr_rts = pl2303_dtr_rts, -- cgit v1.2.3-58-ga151 From 7919c2fd9e07276403b9a4d9ae52305e0d70f923 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:41 +0100 Subject: USB: pl2303: increase bulk-in buffer size to 256 byte The pl2303 requires a bulk-in buffer larger than endpoint size to keep up at high baudrates without loosing data. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 03fe472fee32..7aff62260fd4 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -1170,6 +1170,7 @@ static struct usb_serial_driver pl2303_device = { .id_table = id_table, .usb_driver = &pl2303_driver, .num_ports = 1, + .bulk_in_size = 256, .bulk_out_size = 256, .open = pl2303_open, .close = pl2303_close, -- cgit v1.2.3-58-ga151 From 30af7fb5a40f8724c130428473edffa73170e04c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:42 +0100 Subject: USB: serial: fix generic chars_in_buffer Make sure chars_in_buffer accounts also for data in host stack queues. This fixes the problem with tty_wait_until_sent returning too soon at close which could cause the final write urb to be cancelled. Reported-by: Pete Zaitcev Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index a5e610976689..8f78d7b8e888 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -309,10 +309,14 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) /* don't have to grab the lock here, as we will retry if != 0 */ port->write_urb_busy = 0; - } else - result = count; + return result; + } - return result; + spin_lock_irqsave(&port->lock, flags); + port->tx_bytes_flight += count; + spin_unlock_irqrestore(&port->lock, flags); + + return count; } /** @@ -400,7 +404,7 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) if (serial->type->max_in_flight_urbs) chars = port->tx_bytes_flight; else - chars = kfifo_len(&port->write_fifo); + chars = kfifo_len(&port->write_fifo) + port->tx_bytes_flight; spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, chars); @@ -510,7 +514,10 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) port->urbs_in_flight = 0; spin_unlock_irqrestore(&port->lock, flags); } else { + spin_lock_irqsave(&port->lock, flags); + port->tx_bytes_flight -= urb->transfer_buffer_length; port->write_urb_busy = 0; + spin_unlock_irqrestore(&port->lock, flags); if (status) kfifo_reset_out(&port->write_fifo); -- cgit v1.2.3-58-ga151 From 50dbb8528757b1977efd5d270ed9d262cbbef87d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:43 +0100 Subject: USB: serial: fix missing locking on fifo in write callback On errors the fifo was reset without any locking. This could race with write which do kfifo_put and perhaps also chars_in_buffer and write_room. Every other access to the fifo is protected using the port lock so better add it to the error path as well. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 8f78d7b8e888..2a3196a2c66c 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -519,10 +519,13 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) port->write_urb_busy = 0; spin_unlock_irqrestore(&port->lock, flags); - if (status) + if (status) { + spin_lock_irqsave(&port->lock, flags); kfifo_reset_out(&port->write_fifo); - else + spin_unlock_irqrestore(&port->lock, flags); + } else { usb_serial_generic_write_start(port); + } } if (status) -- cgit v1.2.3-58-ga151 From ec3ee5086c1e1b883292eaf795b5c1b0c25bcffe Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:44 +0100 Subject: USB: serial: clear fifo on close Make sure fifo is emptied on close. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 2a3196a2c66c..583244bd84b1 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -156,13 +156,19 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_open); static void generic_cleanup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; + unsigned long flags; dbg("%s - port %d", __func__, port->number); if (serial->dev) { /* shutdown any bulk transfers that might be going on */ - if (port->bulk_out_size) + if (port->bulk_out_size) { usb_kill_urb(port->write_urb); + + spin_lock_irqsave(&port->lock, flags); + kfifo_reset_out(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); + } if (port->bulk_in_size) usb_kill_urb(port->read_urb); } -- cgit v1.2.3-58-ga151 From f26788da3b342099d2b02d99ba1cb7f154d6ef7b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:45 +0100 Subject: USB: serial: refactor generic close Export usb_serial_generic_close so that drivers can easily kill the read and write urb and make sure that the write fifo is reset. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ark3116.c | 7 ++----- drivers/usb/serial/belkin_sa.c | 4 +--- drivers/usb/serial/ch341.c | 5 +---- drivers/usb/serial/cp210x.c | 5 +---- drivers/usb/serial/generic.c | 1 + drivers/usb/serial/mct_u232.c | 7 ++----- 6 files changed, 8 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 9b66bf19f751..0ae610efa23d 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -355,14 +355,11 @@ static void ark3116_close(struct usb_serial_port *port) /* deactivate interrupts */ ark3116_write_reg(serial, UART_IER, 0); - /* shutdown any bulk reads that might be going on */ - if (serial->num_bulk_out) - usb_kill_urb(port->write_urb); - if (serial->num_bulk_in) - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); if (serial->num_interrupt_in) usb_kill_urb(port->interrupt_in_urb); } + } static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port) diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 1295e44e3f1c..bdab31afc37d 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -246,9 +246,7 @@ static void belkin_sa_close(struct usb_serial_port *port) { dbg("%s port %d", __func__, port->number); - /* shutdown our bulk reads and writes */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); } /* belkin_sa_close */ diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 7e8e39818414..63f7cc45bcac 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -305,10 +305,7 @@ static void ch341_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); - /* shutdown our urbs */ - dbg("%s - shutting down urbs", __func__); - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); } diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 705a7e7a9746..fa4fb5e0cf12 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -422,10 +422,7 @@ static void cp210x_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); - /* shutdown our urbs */ - dbg("%s - shutting down urbs", __func__); - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); mutex_lock(&port->serial->disc_mutex); if (!port->serial->disconnected) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 583244bd84b1..e1d245aa4a1d 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -179,6 +179,7 @@ void usb_serial_generic_close(struct usb_serial_port *port) dbg("%s - port %d", __func__, port->number); generic_cleanup(port); } +EXPORT_SYMBOL_GPL(usb_serial_generic_close); static int usb_serial_multi_urb_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 2849f8c32015..7aa01b95b1d4 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -549,12 +549,9 @@ static void mct_u232_close(struct usb_serial_port *port) { dbg("%s port %d", __func__, port->number); - if (port->serial->dev) { - /* shutdown our urbs */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); + if (port->serial->dev) usb_kill_urb(port->interrupt_in_urb); - } } /* mct_u232_close */ -- cgit v1.2.3-58-ga151 From 41bd72f9041def8e3334d3e3693862d078f5cb9a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:53 +0100 Subject: USB: serial: refactor read urb submission in generic driver Use the already exported function for submitting the read urb associated with a usb_serial_port. Make sure it returns the result of usb_submit_urb and rename to the more descriptive usb_serial_generic_submit_read_urb. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 32 ++++++++------------------------ drivers/usb/serial/usb_debug.c | 2 +- include/linux/usb/serial.h | 2 +- 3 files changed, 10 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index e1d245aa4a1d..d8dd3a59f56a 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -118,7 +118,6 @@ void usb_serial_generic_deregister(void) int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct usb_serial *serial = port->serial; int result = 0; unsigned long flags; @@ -131,23 +130,8 @@ int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port spin_unlock_irqrestore(&port->lock, flags); /* if we have a bulk endpoint, start reading from it */ - if (port->bulk_in_size) { - /* Start reading from the device */ - usb_fill_bulk_urb(port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ((serial->type->read_bulk_callback) ? - serial->type->read_bulk_callback : - usb_serial_generic_read_bulk_callback), - port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - } + if (port->bulk_in_size) + result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); return result; } @@ -418,9 +402,8 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) return chars; } - -void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port, - gfp_t mem_flags) +int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, + gfp_t mem_flags) { struct urb *urb = port->read_urb; struct usb_serial *serial = port->serial; @@ -439,11 +422,12 @@ void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port, result = usb_submit_urb(urb, mem_flags); if (result && result != -EPERM) { dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", + "%s - failed submitting read urb, error %d\n", __func__, result); } + return result; } -EXPORT_SYMBOL_GPL(usb_serial_generic_resubmit_read_urb); +EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urb); /* Push data to tty layer and resubmit the bulk read URB */ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) @@ -471,7 +455,7 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) tty_flip_buffer_push(tty); tty_kref_put(tty); done: - usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC); + usb_serial_generic_submit_read_urb(port, GFP_ATOMIC); } void usb_serial_generic_read_bulk_callback(struct urb *urb) diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 28026b47344a..63c2734e764a 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -69,7 +69,7 @@ static void usb_debug_read_bulk_callback(struct urb *urb) memcmp(urb->transfer_buffer, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE) == 0) { usb_serial_handle_break(port); - usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC); + usb_serial_generic_submit_read_urb(port, GFP_ATOMIC); return; } diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index ab311dab3383..53f6dc65e87e 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -321,7 +321,7 @@ extern void usb_serial_generic_disconnect(struct usb_serial *serial); extern void usb_serial_generic_release(struct usb_serial *serial); extern int usb_serial_generic_register(int debug); extern void usb_serial_generic_deregister(void); -extern void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port, +extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags); extern int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, -- cgit v1.2.3-58-ga151 From 056afc0f01701c4c779ac5b4f2dd9058063f337c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:54 +0100 Subject: USB: serial: remove unnecessary re-initialisation of generic urbs The generic read and write bulk urbs are initialised when allocated in usb_serial_probe. The only field that needs to be updated after that is the transfer_buffer_length of the write urb. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 25 ++----------------------- 1 file changed, 2 insertions(+), 23 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index d8dd3a59f56a..ffc2f163bb59 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -256,7 +256,6 @@ error_no_buffer: */ static int usb_serial_generic_write_start(struct usb_serial_port *port) { - struct usb_serial *serial = port->serial; unsigned char *data; int result; int count; @@ -281,15 +280,7 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) count = kfifo_out_locked(&port->write_fifo, data, port->bulk_out_size, &port->lock); usb_serial_debug_data(debug, &port->dev, __func__, count, data); - /* set up our urb */ - usb_fill_bulk_urb(port->write_urb, serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, count, - ((serial->type->write_bulk_callback) ? - serial->type->write_bulk_callback : - usb_serial_generic_write_bulk_callback), - port); + port->write_urb->transfer_buffer_length = count; /* send the data out the bulk port */ result = usb_submit_urb(port->write_urb, GFP_ATOMIC); @@ -405,21 +396,9 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags) { - struct urb *urb = port->read_urb; - struct usb_serial *serial = port->serial; int result; - /* Continue reading from device */ - usb_fill_bulk_urb(urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - urb->transfer_buffer, - urb->transfer_buffer_length, - ((serial->type->read_bulk_callback) ? - serial->type->read_bulk_callback : - usb_serial_generic_read_bulk_callback), port); - - result = usb_submit_urb(urb, mem_flags); + result = usb_submit_urb(port->read_urb, mem_flags); if (result && result != -EPERM) { dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", -- cgit v1.2.3-58-ga151 From 2db6c7698bbb37128959d3a207fc46e3f45bef3c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:55 +0100 Subject: USB: cp210x: use generic submit_read_urb at open There is no need to initialise the read urb as this is done at port probe. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index fa4fb5e0cf12..f95a590e1993 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -372,7 +372,6 @@ static unsigned int cp210x_quantise_baudrate(unsigned int baud) { static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct usb_serial *serial = port->serial; int result; dbg("%s - port %d", __func__, port->number); @@ -383,20 +382,9 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) return -EPROTO; } - /* Start reading from the device */ - usb_fill_bulk_urb(port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - serial->type->read_bulk_callback, - port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) { - dev_err(&port->dev, "%s - failed resubmitting read urb, " - "error %d\n", __func__, result); + result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); + if (result) return result; - } /* Configure the termios structure */ cp210x_get_termios(tty, port); -- cgit v1.2.3-58-ga151 From 0f3d5bae2bdacce6c6c1d116809d6b3d50338df7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:56 +0100 Subject: USB: serial: clean up read processing in generic driver Always process and flush read urb, but only resubmit when not throttled. The new tty-layer supply plenty of slack so there is really no need to cache and delay processing of a single urb while throttled. Note that unthrottle now submits using GFP_KERNEL as we are not in atomic context (so there is no need to save irq state either). Note also that the process_read_urb function could be added to usb_serial_driver should any driver need to do any device specific processing. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index ffc2f163bb59..e16c0b234cc9 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -408,16 +408,16 @@ int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, } EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urb); -/* Push data to tty layer and resubmit the bulk read URB */ -static void flush_and_resubmit_read_urb(struct usb_serial_port *port) +static void usb_serial_generic_process_read_urb(struct urb *urb) { - struct urb *urb = port->read_urb; - struct tty_struct *tty = tty_port_tty_get(&port->port); + struct usb_serial_port *port = urb->context; + struct tty_struct *tty; char *ch = (char *)urb->transfer_buffer; int i; + tty = tty_port_tty_get(&port->port); if (!tty) - goto done; + return; /* The per character mucking around with sysrq path it too slow for stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases @@ -425,7 +425,6 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) if (!port->port.console || !port->sysrq) tty_insert_flip_string(tty, ch, urb->actual_length); else { - /* Push data to tty */ for (i = 0; i < urb->actual_length; i++, ch++) { if (!usb_serial_handle_sysrq_char(tty, port, *ch)) tty_insert_flip_char(tty, *ch, TTY_NORMAL); @@ -433,8 +432,6 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) } tty_flip_buffer_push(tty); tty_kref_put(tty); -done: - usb_serial_generic_submit_read_urb(port, GFP_ATOMIC); } void usb_serial_generic_read_bulk_callback(struct urb *urb) @@ -454,13 +451,14 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + usb_serial_generic_process_read_urb(urb); /* Throttle the device if requested by tty */ spin_lock_irqsave(&port->lock, flags); port->throttled = port->throttle_req; if (!port->throttled) { spin_unlock_irqrestore(&port->lock, flags); - flush_and_resubmit_read_urb(port); + usb_serial_generic_submit_read_urb(port, GFP_ATOMIC); } else spin_unlock_irqrestore(&port->lock, flags); } @@ -523,20 +521,17 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; int was_throttled; - unsigned long flags; dbg("%s - port %d", __func__, port->number); /* Clear the throttle flags */ - spin_lock_irqsave(&port->lock, flags); + spin_lock_irq(&port->lock); was_throttled = port->throttled; port->throttled = port->throttle_req = 0; - spin_unlock_irqrestore(&port->lock, flags); + spin_unlock_irq(&port->lock); - if (was_throttled) { - /* Resume reading from device */ - flush_and_resubmit_read_urb(port); - } + if (was_throttled) + usb_serial_generic_submit_read_urb(port, GFP_KERNEL); } #ifdef CONFIG_MAGIC_SYSRQ -- cgit v1.2.3-58-ga151 From 231543206452f5c42bace54b5c13dfe5a0313812 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:57 +0100 Subject: USB: serial: generalise generic read implementation Add process_read_urb to usb_serial_driver so that a driver can rely on the generic read (and throttle) mechanism but still do device specific processing of incoming data (such as adding tty_flags before pushing to line discipline). The default generic implementation handles sysrq for consoles but otherwise simply pushes to tty. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 5 +++-- drivers/usb/serial/usb-serial.c | 1 + include/linux/usb/serial.h | 3 +++ 3 files changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index e16c0b234cc9..176f1257b664 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -408,7 +408,7 @@ int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, } EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urb); -static void usb_serial_generic_process_read_urb(struct urb *urb) +void usb_serial_generic_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; struct tty_struct *tty; @@ -433,6 +433,7 @@ static void usb_serial_generic_process_read_urb(struct urb *urb) tty_flip_buffer_push(tty); tty_kref_put(tty); } +EXPORT_SYMBOL_GPL(usb_serial_generic_process_read_urb); void usb_serial_generic_read_bulk_callback(struct urb *urb) { @@ -451,7 +452,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); - usb_serial_generic_process_read_urb(urb); + port->serial->type->process_read_urb(urb); /* Throttle the device if requested by tty */ spin_lock_irqsave(&port->lock, flags); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 538924627eba..1b924425089f 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1298,6 +1298,7 @@ static void fixup_generic(struct usb_serial_driver *device) set_to_generic_if_null(device, write_bulk_callback); set_to_generic_if_null(device, disconnect); set_to_generic_if_null(device, release); + set_to_generic_if_null(device, process_read_urb); } int usb_serial_register(struct usb_serial_driver *driver) diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 53f6dc65e87e..ff8872eba3ac 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -272,6 +272,8 @@ struct usb_serial_driver { void (*write_int_callback)(struct urb *urb); void (*read_bulk_callback)(struct urb *urb); void (*write_bulk_callback)(struct urb *urb); + /* Called by the generic read bulk callback */ + void (*process_read_urb)(struct urb *urb); }; #define to_usb_serial_driver(d) \ container_of(d, struct usb_serial_driver, driver) @@ -323,6 +325,7 @@ extern int usb_serial_generic_register(int debug); extern void usb_serial_generic_deregister(void); extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags); +extern void usb_serial_generic_process_read_urb(struct urb *urb); extern int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, unsigned int ch); -- cgit v1.2.3-58-ga151 From f08e07ac8b87b1a4b8ff88a061195e99282dfbbd Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:58 +0100 Subject: USB: pl2303: switch to generic read implementation Use generic read implementation and use process_read_urb to do device specific processing (handle line status). Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 84 ++++++++++++++------------------------------- 1 file changed, 25 insertions(+), 59 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 7aff62260fd4..77e968045f75 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -770,10 +770,8 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) pl2303_set_termios(tty, port, &tmp_termios); dbg("%s - submitting read urb", __func__); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); + result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); if (result) { - dev_err(&port->dev, "%s - failed submitting read urb," - " error %d\n", __func__, result); pl2303_close(port); return -EPROTO; } @@ -1037,13 +1035,31 @@ exit: __func__, retval); } -static void pl2303_push_data(struct tty_struct *tty, - struct usb_serial_port *port, struct urb *urb, - u8 line_status) +static void pl2303_process_read_urb(struct urb *urb) { + struct usb_serial_port *port = urb->context; + struct pl2303_private *priv = usb_get_serial_port_data(port); + struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; - /* get tty_flag from status */ char tty_flag = TTY_NORMAL; + unsigned long flags; + u8 line_status; + int i; + + /* update line status */ + spin_lock_irqsave(&priv->lock, flags); + line_status = priv->line_status; + priv->line_status &= ~UART_STATE_TRANSIENT_MASK; + spin_unlock_irqrestore(&priv->lock, flags); + wake_up_interruptible(&priv->delta_msr_wait); + + if (!urb->actual_length) + return; + + tty = tty_port_tty_get(&port->port); + if (!tty) + return; + /* break takes precedence over parity, */ /* which takes precedence over framing errors */ if (line_status & UART_BREAK_ERROR) @@ -1061,63 +1077,13 @@ static void pl2303_push_data(struct tty_struct *tty, if (tty_flag == TTY_NORMAL && !(port->port.console && port->sysrq)) tty_insert_flip_string(tty, data, urb->actual_length); else { - int i; for (i = 0; i < urb->actual_length; ++i) if (!usb_serial_handle_sysrq_char(tty, port, data[i])) tty_insert_flip_char(tty, data[i], tty_flag); } - tty_flip_buffer_push(tty); -} - -static void pl2303_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct pl2303_private *priv = usb_get_serial_port_data(port); - struct tty_struct *tty; - unsigned long flags; - int result; - int status = urb->status; - u8 line_status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - urb status = %d", __func__, status); - if (status == -EPROTO) { - /* PL2303 mysteriously fails with -EPROTO reschedule - * the read */ - dbg("%s - caught -EPROTO, resubmitting the urb", - __func__); - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&urb->dev->dev, "%s - failed" - " resubmitting read urb, error %d\n", - __func__, result); - return; - } - dbg("%s - unable to handle the error, exiting.", __func__); - return; - } - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, urb->transfer_buffer); - - spin_lock_irqsave(&priv->lock, flags); - line_status = priv->line_status; - priv->line_status &= ~UART_STATE_TRANSIENT_MASK; - spin_unlock_irqrestore(&priv->lock, flags); - wake_up_interruptible(&priv->delta_msr_wait); - - tty = tty_port_tty_get(&port->port); - if (tty && urb->actual_length) { - pl2303_push_data(tty, port, urb, line_status); - } + tty_flip_buffer_push(tty); tty_kref_put(tty); - /* Schedule the next read _if_ we are still open */ - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result && result != -EPERM) - dev_err(&urb->dev->dev, "%s - failed resubmitting" - " read urb, error %d\n", __func__, result); } static void pl2303_write_bulk_callback(struct urb *urb) @@ -1182,7 +1148,7 @@ static struct usb_serial_driver pl2303_device = { .set_termios = pl2303_set_termios, .tiocmget = pl2303_tiocmget, .tiocmset = pl2303_tiocmset, - .read_bulk_callback = pl2303_read_bulk_callback, + .process_read_urb = pl2303_process_read_urb, .read_int_callback = pl2303_read_int_callback, .write_bulk_callback = pl2303_write_bulk_callback, .write_room = pl2303_write_room, -- cgit v1.2.3-58-ga151 From f1e949ac4ea1f4e37187949944899afeaff33e1e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:05:59 +0100 Subject: USB: serial: export generic throttle and unthrottle Allow drivers to use the generic throttle and unthrottle implementation. This makes sense for drivers using the generic read functionality. Note that drivers need to set these explicitly in order to enable them (i.e., we do not set them at port probe if not defined). Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 176f1257b664..789a5af842a9 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -517,6 +517,7 @@ void usb_serial_generic_throttle(struct tty_struct *tty) port->throttle_req = 1; spin_unlock_irqrestore(&port->lock, flags); } +EXPORT_SYMBOL_GPL(usb_serial_generic_throttle); void usb_serial_generic_unthrottle(struct tty_struct *tty) { @@ -534,6 +535,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) if (was_throttled) usb_serial_generic_submit_read_urb(port, GFP_KERNEL); } +EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle); #ifdef CONFIG_MAGIC_SYSRQ int usb_serial_handle_sysrq_char(struct tty_struct *tty, -- cgit v1.2.3-58-ga151 From 1b551015a10d6cf04f2f8e11f0ca534b261d2c55 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:00 +0100 Subject: USB: ftdi_sio: switch to generic read implementation Switch to generic read implementation and use process_read_urb to do device specific processing (handle line status). Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 99 +++---------------------------------------- 1 file changed, 7 insertions(+), 92 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index ab4ad18d6ef3..01efe6dda05c 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -789,8 +789,7 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, static int ftdi_write_room(struct tty_struct *tty); static int ftdi_chars_in_buffer(struct tty_struct *tty); static void ftdi_write_bulk_callback(struct urb *urb); -static void ftdi_read_bulk_callback(struct urb *urb); -static void ftdi_process_read(struct usb_serial_port *port); +static void ftdi_process_read_urb(struct urb *urb); static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int ftdi_tiocmget(struct tty_struct *tty, struct file *file); @@ -799,8 +798,6 @@ static int ftdi_tiocmset(struct tty_struct *tty, struct file *file, static int ftdi_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void ftdi_break_ctl(struct tty_struct *tty, int break_state); -static void ftdi_throttle(struct tty_struct *tty); -static void ftdi_unthrottle(struct tty_struct *tty); static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base); static unsigned short int ftdi_232am_baud_to_divisor(int baud); @@ -825,12 +822,12 @@ static struct usb_serial_driver ftdi_sio_device = { .open = ftdi_open, .close = ftdi_close, .dtr_rts = ftdi_dtr_rts, - .throttle = ftdi_throttle, - .unthrottle = ftdi_unthrottle, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, .write = ftdi_write, .write_room = ftdi_write_room, .chars_in_buffer = ftdi_chars_in_buffer, - .read_bulk_callback = ftdi_read_bulk_callback, + .process_read_urb = ftdi_process_read_urb, .write_bulk_callback = ftdi_write_bulk_callback, .tiocmget = ftdi_tiocmget, .tiocmset = ftdi_tiocmset, @@ -1686,31 +1683,10 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port) return 0; } -static int ftdi_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags) -{ - struct urb *urb = port->read_urb; - struct usb_serial *serial = port->serial; - int result; - - usb_fill_bulk_urb(urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - urb->transfer_buffer, - urb->transfer_buffer_length, - ftdi_read_bulk_callback, port); - result = usb_submit_urb(urb, mem_flags); - if (result && result != -EPERM) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); - return result; -} - static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) { /* ftdi_open */ struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); - unsigned long flags; int result; dbg("%s", __func__); @@ -1732,14 +1708,8 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) if (tty) ftdi_set_termios(tty, port, tty->termios); - /* Not throttled */ - spin_lock_irqsave(&port->lock, flags); - port->throttled = 0; - port->throttle_req = 0; - spin_unlock_irqrestore(&port->lock, flags); - /* Start reading from the device */ - result = ftdi_submit_read_urb(port, GFP_KERNEL); + result = usb_serial_generic_open(tty, port); if (!result) kref_get(&priv->kref); @@ -2071,9 +2041,9 @@ static int ftdi_process_packet(struct tty_struct *tty, return len; } -static void ftdi_process_read(struct usb_serial_port *port) +static void ftdi_process_read_urb(struct urb *urb) { - struct urb *urb = port->read_urb; + struct usb_serial_port *port = urb->context; struct tty_struct *tty; struct ftdi_private *priv = usb_get_serial_port_data(port); char *data = (char *)urb->transfer_buffer; @@ -2095,32 +2065,6 @@ static void ftdi_process_read(struct usb_serial_port *port) tty_kref_put(tty); } -static void ftdi_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - if (urb->status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, urb->status); - return; - } - - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, urb->transfer_buffer); - ftdi_process_read(port); - - spin_lock_irqsave(&port->lock, flags); - port->throttled = port->throttle_req; - if (!port->throttled) { - spin_unlock_irqrestore(&port->lock, flags); - ftdi_submit_read_urb(port, GFP_ATOMIC); - } else - spin_unlock_irqrestore(&port->lock, flags); -} - static void ftdi_break_ctl(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; @@ -2456,35 +2400,6 @@ static int ftdi_ioctl(struct tty_struct *tty, struct file *file, return -ENOIOCTLCMD; } -static void ftdi_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&port->lock, flags); - port->throttle_req = 1; - spin_unlock_irqrestore(&port->lock, flags); -} - -void ftdi_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - int was_throttled; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&port->lock, flags); - was_throttled = port->throttled; - port->throttled = port->throttle_req = 0; - spin_unlock_irqrestore(&port->lock, flags); - - if (was_throttled) - ftdi_submit_read_urb(port, GFP_KERNEL); -} - static int __init ftdi_init(void) { int retval; -- cgit v1.2.3-58-ga151 From 1a1405e22563151de79fdc83aa5e5815d10f0291 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:01 +0100 Subject: USB: serial: clean up some error and debug messages in generic driver Clean up error messages on usb_submit_urb failure. Remove debug message on zero-length writes. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 789a5af842a9..63b43308e160 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -221,8 +221,7 @@ static int usb_serial_multi_urb_write(struct tty_struct *tty, status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", + dev_err(&port->dev, "%s - error submitting urb: %d\n", __func__, status); goto error; } @@ -285,8 +284,7 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) /* send the data out the bulk port */ result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", + dev_err(&port->dev, "%s - error submitting urb: %d\n", __func__, result); /* don't have to grab the lock here, as we will retry if != 0 */ @@ -324,10 +322,8 @@ int usb_serial_generic_write(struct tty_struct *tty, if (!port->bulk_out_size) return -ENODEV; - if (count == 0) { - dbg("%s - write request of 0 bytes", __func__); + if (!count) return 0; - } if (serial->type->max_in_flight_urbs) return usb_serial_multi_urb_write(tty, port, @@ -400,8 +396,7 @@ int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, result = usb_submit_urb(port->read_urb, mem_flags); if (result && result != -EPERM) { - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", + dev_err(&port->dev, "%s - error submitting urb: %d\n", __func__, result); } return result; -- cgit v1.2.3-58-ga151 From 50a5f70cee11636908711abd339f5c5933375a7d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:02 +0100 Subject: USB: serial: clean up generic write start busy test Submit write urb if it is not already in use and we have buffered data. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 63b43308e160..9756b5c22d94 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -259,22 +259,15 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) int result; int count; unsigned long flags; - bool start_io; - /* Atomically determine whether we can and need to start a USB - * operation. */ spin_lock_irqsave(&port->lock, flags); - if (port->write_urb_busy) - start_io = false; - else { - start_io = (kfifo_len(&port->write_fifo) != 0); - port->write_urb_busy = start_io; + if (port->write_urb_busy || !kfifo_len(&port->write_fifo)) { + spin_unlock_irqrestore(&port->lock, flags); + return 0; } + port->write_urb_busy = 1; spin_unlock_irqrestore(&port->lock, flags); - if (!start_io) - return 0; - data = port->write_urb->transfer_buffer; count = kfifo_out_locked(&port->write_fifo, data, port->bulk_out_size, &port->lock); usb_serial_debug_data(debug, &port->dev, __func__, count, data); -- cgit v1.2.3-58-ga151 From 684c6e30d389f67ef727c8f5a7b23a09b4cb02e4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:03 +0100 Subject: USB: pl2303: switch to generic write implementation Replace custom fifo-based write implementation with the generic kfifo-based one. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 330 +------------------------------------------- 1 file changed, 4 insertions(+), 326 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 77e968045f75..28037c1af93e 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -40,16 +40,6 @@ static int debug; #define PL2303_CLOSING_WAIT (30*HZ) -#define PL2303_BUF_SIZE 1024 -#define PL2303_TMP_BUF_SIZE 1024 - -struct pl2303_buf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; - static const struct usb_device_id id_table[] = { { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, @@ -157,173 +147,12 @@ enum pl2303_type { struct pl2303_private { spinlock_t lock; - struct pl2303_buf *buf; - int write_urb_in_use; wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; enum pl2303_type type; }; -/* - * pl2303_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ -static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) -{ - struct pl2303_buf *pb; - - if (size == 0) - return NULL; - - pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); - if (pb == NULL) - return NULL; - - pb->buf_buf = kmalloc(size, GFP_KERNEL); - if (pb->buf_buf == NULL) { - kfree(pb); - return NULL; - } - - pb->buf_size = size; - pb->buf_get = pb->buf_put = pb->buf_buf; - - return pb; -} - -/* - * pl2303_buf_free - * - * Free the buffer and all associated memory. - */ -static void pl2303_buf_free(struct pl2303_buf *pb) -{ - if (pb) { - kfree(pb->buf_buf); - kfree(pb); - } -} - -/* - * pl2303_buf_clear - * - * Clear out all data in the circular buffer. - */ -static void pl2303_buf_clear(struct pl2303_buf *pb) -{ - if (pb != NULL) - pb->buf_get = pb->buf_put; - /* equivalent to a get of all data available */ -} - -/* - * pl2303_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ -static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) -{ - if (pb == NULL) - return 0; - - return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; -} - -/* - * pl2303_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ -static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) -{ - if (pb == NULL) - return 0; - - return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; -} - -/* - * pl2303_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ -static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL) - return 0; - - len = pl2303_buf_space_avail(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_put; - if (count > len) { - memcpy(pb->buf_put, buf, len); - memcpy(pb->buf_buf, buf+len, count - len); - pb->buf_put = pb->buf_buf + count - len; - } else { - memcpy(pb->buf_put, buf, count); - if (count < len) - pb->buf_put += count; - else /* count == len */ - pb->buf_put = pb->buf_buf; - } - - return count; -} - -/* - * pl2303_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ -static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL) - return 0; - - len = pl2303_buf_data_avail(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_get; - if (count > len) { - memcpy(buf, pb->buf_get, len); - memcpy(buf+len, pb->buf_buf, count - len); - pb->buf_get = pb->buf_buf + count - len; - } else { - memcpy(buf, pb->buf_get, count); - if (count < len) - pb->buf_get += count; - else /* count == len */ - pb->buf_get = pb->buf_buf; - } - - return count; -} - static int pl2303_vendor_read(__u16 value, __u16 index, struct usb_serial *serial, unsigned char *buf) { @@ -372,11 +201,6 @@ static int pl2303_startup(struct usb_serial *serial) if (!priv) goto cleanup; spin_lock_init(&priv->lock); - priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); - if (priv->buf == NULL) { - kfree(priv); - goto cleanup; - } init_waitqueue_head(&priv->delta_msr_wait); priv->type = type; usb_set_serial_port_data(serial->port[i], priv); @@ -404,7 +228,6 @@ cleanup: kfree(buf); for (--i; i >= 0; --i) { priv = usb_get_serial_port_data(serial->port[i]); - pl2303_buf_free(priv->buf); kfree(priv); usb_set_serial_port_data(serial->port[i], NULL); } @@ -422,102 +245,6 @@ static int set_control_lines(struct usb_device *dev, u8 value) return retval; } -static void pl2303_send(struct usb_serial_port *port) -{ - int count, result; - struct pl2303_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - - if (priv->write_urb_in_use) { - spin_unlock_irqrestore(&priv->lock, flags); - return; - } - - count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, - port->bulk_out_size); - - if (count == 0) { - spin_unlock_irqrestore(&priv->lock, flags); - return; - } - - priv->write_urb_in_use = 1; - - spin_unlock_irqrestore(&priv->lock, flags); - - usb_serial_debug_data(debug, &port->dev, __func__, count, - port->write_urb->transfer_buffer); - - port->write_urb->transfer_buffer_length = count; - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) { - dev_err(&port->dev, "%s - failed submitting write urb," - " error %d\n", __func__, result); - priv->write_urb_in_use = 0; - /* TODO: reschedule pl2303_send */ - } - - usb_serial_port_softint(port); -} - -static int pl2303_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct pl2303_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - - dbg("%s - port %d, %d bytes", __func__, port->number, count); - - if (!count) - return count; - - spin_lock_irqsave(&priv->lock, flags); - count = pl2303_buf_put(priv->buf, buf, count); - spin_unlock_irqrestore(&priv->lock, flags); - - pl2303_send(port); - - return count; -} - -static int pl2303_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct pl2303_private *priv = usb_get_serial_port_data(port); - int room = 0; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - room = pl2303_buf_space_avail(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); - - dbg("%s - returns %d", __func__, room); - return room; -} - -static int pl2303_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct pl2303_private *priv = usb_get_serial_port_data(port); - int chars = 0; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - chars = pl2303_buf_data_avail(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); - - dbg("%s - returns %d", __func__, chars); - return chars; -} - static void pl2303_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { @@ -729,15 +456,14 @@ static void pl2303_dtr_rts(struct usb_serial_port *port, int on) static void pl2303_close(struct usb_serial_port *port) { - struct pl2303_private *priv = usb_get_serial_port_data(port); unsigned long flags; dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); + spin_lock_irqsave(&port->lock, flags); /* clear out any remaining data in the buffer */ - pl2303_buf_clear(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); + kfifo_reset_out(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); /* shutdown our urbs */ dbg("%s - shutting down urbs", __func__); @@ -951,10 +677,7 @@ static void pl2303_release(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { priv = usb_get_serial_port_data(serial->port[i]); - if (priv) { - pl2303_buf_free(priv->buf); - kfree(priv); - } + kfree(priv); } } @@ -1086,47 +809,6 @@ static void pl2303_process_read_urb(struct urb *urb) tty_kref_put(tty); } -static void pl2303_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct pl2303_private *priv = usb_get_serial_port_data(port); - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", __func__, - status); - priv->write_urb_in_use = 0; - return; - default: - /* error in the urb, so we have to resubmit it */ - dbg("%s - Overflow in write", __func__); - dbg("%s - nonzero write bulk status received: %d", __func__, - status); - port->write_urb->transfer_buffer_length = 1; - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - dev_err(&urb->dev->dev, "%s - failed resubmitting write" - " urb, error %d\n", __func__, result); - else - return; - } - - priv->write_urb_in_use = 0; - - /* send any buffered data */ - pl2303_send(port); -} - /* All of the device info needed for the PL2303 SIO serial converter */ static struct usb_serial_driver pl2303_device = { .driver = { @@ -1142,7 +824,6 @@ static struct usb_serial_driver pl2303_device = { .close = pl2303_close, .dtr_rts = pl2303_dtr_rts, .carrier_raised = pl2303_carrier_raised, - .write = pl2303_write, .ioctl = pl2303_ioctl, .break_ctl = pl2303_break_ctl, .set_termios = pl2303_set_termios, @@ -1150,9 +831,6 @@ static struct usb_serial_driver pl2303_device = { .tiocmset = pl2303_tiocmset, .process_read_urb = pl2303_process_read_urb, .read_int_callback = pl2303_read_int_callback, - .write_bulk_callback = pl2303_write_bulk_callback, - .write_room = pl2303_write_room, - .chars_in_buffer = pl2303_chars_in_buffer, .attach = pl2303_startup, .release = pl2303_release, }; -- cgit v1.2.3-58-ga151 From 8b0127b2082601e40295045414a8318f2c8ee5a0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:04 +0100 Subject: USB: pl2303: use generic close Use usb_serial_generic_close to kill the read and write urbs and to reset the write fifo. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 28037c1af93e..18d1c44faa51 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -456,21 +456,10 @@ static void pl2303_dtr_rts(struct usb_serial_port *port, int on) static void pl2303_close(struct usb_serial_port *port) { - unsigned long flags; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&port->lock, flags); - /* clear out any remaining data in the buffer */ - kfifo_reset_out(&port->write_fifo); - spin_unlock_irqrestore(&port->lock, flags); - - /* shutdown our urbs */ - dbg("%s - shutting down urbs", __func__); - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); - } static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) -- cgit v1.2.3-58-ga151 From 80fa92c1335a3c7f85a3e0d3dbffd79984fdccc0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:05 +0100 Subject: USB: usb_debug: use the generic kfifo-based write implementation Use the generic kfifo-based write implementation rather than allowing up to 4000 8 byte urbs in the host stack queues. Cc: Jason Wessel Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb_debug.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 63c2734e764a..aa2702b76291 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -16,7 +16,6 @@ #include #include -#define URB_DEBUG_MAX_IN_FLIGHT_URBS 4000 #define USB_DEBUG_MAX_PACKET_SIZE 8 #define USB_DEBUG_BRK_SIZE 8 static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { @@ -84,7 +83,6 @@ static struct usb_serial_driver debug_device = { .id_table = id_table, .num_ports = 1, .open = usb_debug_open, - .max_in_flight_urbs = URB_DEBUG_MAX_IN_FLIGHT_URBS, .break_ctl = usb_debug_break_ctl, .read_bulk_callback = usb_debug_read_bulk_callback, }; -- cgit v1.2.3-58-ga151 From 40f92f0dcd9b215c48c53a226328e8e36615e367 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:06 +0100 Subject: USB: serial: allow custom multi-urb write bulk callbacks Allow drivers to implement their own multi-urb write bulk callbacks as we do for single urb writes. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 9756b5c22d94..be52c748bccb 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -217,7 +217,7 @@ static int usb_serial_multi_urb_write(struct tty_struct *tty, usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), buffer, towrite, - usb_serial_generic_write_bulk_callback, port); + port->serial->type->write_bulk_callback, port); status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { -- cgit v1.2.3-58-ga151 From 25d514ca227e1ac81d0906a4ccf2aa171f50a600 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:07 +0100 Subject: USB: serial: re-implement multi-urb writes in generic driver Use dynamic transfer buffer sizes since it is more efficient to let the host controller do the partitioning to fit endpoint size. This way we also do not use more than one urb per write request. Replace max_in_flight_urbs with multi_urb_write flag in struct usb_serial_driver to enable multi-urb writes. Use MAX_TX_URBS=40 and a max buffer size of PAGE_SIZE to prevent DoS attacks. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 132 ++++++++++++++++++------------------------- include/linux/usb/serial.h | 9 ++- 2 files changed, 62 insertions(+), 79 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index be52c748bccb..ad4823bbfa19 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -25,6 +25,8 @@ static int debug; +#define MAX_TX_URBS 40 + #ifdef CONFIG_USB_SERIAL_GENERIC static int generic_probe(struct usb_interface *interface, @@ -172,78 +174,63 @@ static int usb_serial_multi_urb_write(struct tty_struct *tty, struct urb *urb; unsigned char *buffer; int status; - int towrite; - int bwrite = 0; - - dbg("%s - port %d", __func__, port->number); - - if (count == 0) - dbg("%s - write request of 0 bytes", __func__); - while (count > 0) { - towrite = (count > port->bulk_out_size) ? - port->bulk_out_size : count; - spin_lock_irqsave(&port->lock, flags); - if (port->urbs_in_flight > - port->serial->type->max_in_flight_urbs) { - spin_unlock_irqrestore(&port->lock, flags); - dbg("%s - write limit hit", __func__); - return bwrite; - } - port->tx_bytes_flight += towrite; - port->urbs_in_flight++; + spin_lock_irqsave(&port->lock, flags); + if (port->tx_urbs == MAX_TX_URBS) { spin_unlock_irqrestore(&port->lock, flags); + dbg("%s - write limit hit", __func__); + return 0; + } + port->tx_urbs++; + spin_unlock_irqrestore(&port->lock, flags); - buffer = kmalloc(towrite, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, - "%s ran out of kernel memory for urb ...\n", __func__); - goto error_no_buffer; - } + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) { + dev_err(&port->dev, "%s - no free urbs available\n", __func__); + status = -ENOMEM; + goto err_urb; + } - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "%s - no more free urbs\n", + count = min_t(int, count, PAGE_SIZE); + buffer = kmalloc(count, GFP_ATOMIC); + if (!buffer) { + dev_err(&port->dev, "%s - could not allocate buffer\n", __func__); - goto error_no_urb; - } + status = -ENOMEM; + goto err_buf; + } - /* Copy data */ - memcpy(buffer, buf + bwrite, towrite); - usb_serial_debug_data(debug, &port->dev, __func__, - towrite, buffer); - /* fill the buffer and send it */ - usb_fill_bulk_urb(urb, port->serial->dev, + memcpy(buffer, buf, count); + usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); + usb_fill_bulk_urb(urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), - buffer, towrite, + buffer, count, port->serial->type->write_bulk_callback, port); - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, "%s - error submitting urb: %d\n", + status = usb_submit_urb(urb, GFP_ATOMIC); + if (status) { + dev_err(&port->dev, "%s - error submitting urb: %d\n", __func__, status); - goto error; - } - - /* This urb is the responsibility of the host driver now */ - usb_free_urb(urb); - dbg("%s write: %d", __func__, towrite); - count -= towrite; - bwrite += towrite; + goto err; } - return bwrite; + spin_lock_irqsave(&port->lock, flags); + port->tx_bytes += urb->transfer_buffer_length; + spin_unlock_irqrestore(&port->lock, flags); -error: usb_free_urb(urb); -error_no_urb: + + return count; +err: kfree(buffer); -error_no_buffer: +err_buf: + usb_free_urb(urb); +err_urb: spin_lock_irqsave(&port->lock, flags); - port->urbs_in_flight--; - port->tx_bytes_flight -= towrite; + port->tx_urbs--; spin_unlock_irqrestore(&port->lock, flags); - return bwrite; + + return status; } /** @@ -286,7 +273,7 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) } spin_lock_irqsave(&port->lock, flags); - port->tx_bytes_flight += count; + port->tx_bytes += count; spin_unlock_irqrestore(&port->lock, flags); return count; @@ -318,9 +305,8 @@ int usb_serial_generic_write(struct tty_struct *tty, if (!count) return 0; - if (serial->type->max_in_flight_urbs) - return usb_serial_multi_urb_write(tty, port, - buf, count); + if (serial->type->multi_urb_write) + return usb_serial_multi_urb_write(tty, port, buf, count); count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock); result = usb_serial_generic_write_start(port); @@ -337,7 +323,7 @@ int usb_serial_generic_write_room(struct tty_struct *tty) struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; unsigned long flags; - int room = 0; + int room; dbg("%s - port %d", __func__, port->number); @@ -345,14 +331,10 @@ int usb_serial_generic_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&port->lock, flags); - if (serial->type->max_in_flight_urbs) { - if (port->urbs_in_flight < serial->type->max_in_flight_urbs) - room = port->bulk_out_size * - (serial->type->max_in_flight_urbs - - port->urbs_in_flight); - } else { + if (serial->type->multi_urb_write) + room = (MAX_TX_URBS - port->tx_urbs) * PAGE_SIZE; + else room = kfifo_avail(&port->write_fifo); - } spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, room); @@ -372,10 +354,10 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&port->lock, flags); - if (serial->type->max_in_flight_urbs) - chars = port->tx_bytes_flight; + if (serial->type->multi_urb_write) + chars = port->tx_bytes; else - chars = kfifo_len(&port->write_fifo) + port->tx_bytes_flight; + chars = kfifo_len(&port->write_fifo) + port->tx_bytes; spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, chars); @@ -461,18 +443,16 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) dbg("%s - port %d", __func__, port->number); - if (port->serial->type->max_in_flight_urbs) { + if (port->serial->type->multi_urb_write) { kfree(urb->transfer_buffer); spin_lock_irqsave(&port->lock, flags); - --port->urbs_in_flight; - port->tx_bytes_flight -= urb->transfer_buffer_length; - if (port->urbs_in_flight < 0) - port->urbs_in_flight = 0; + port->tx_bytes -= urb->transfer_buffer_length; + port->tx_urbs--; spin_unlock_irqrestore(&port->lock, flags); } else { spin_lock_irqsave(&port->lock, flags); - port->tx_bytes_flight -= urb->transfer_buffer_length; + port->tx_bytes -= urb->transfer_buffer_length; port->write_urb_busy = 0; spin_unlock_irqrestore(&port->lock, flags); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index ff8872eba3ac..2a3283761600 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -60,6 +60,8 @@ enum port_dev_state { * @write_urb: pointer to the bulk out struct urb for this port. * @write_fifo: kfifo used to buffer outgoing data * @write_urb_busy: port`s writing status + * @tx_bytes: number of bytes currently in host stack queues + * @tx_urbs: number of urbs currently in host stack queues * @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this * port. * @write_wait: a wait_queue_head_t used by the port. @@ -98,8 +100,8 @@ struct usb_serial_port { int write_urb_busy; __u8 bulk_out_endpointAddress; - int tx_bytes_flight; - int urbs_in_flight; + int tx_bytes; + int tx_urbs; wait_queue_head_t write_wait; struct work_struct work; @@ -223,7 +225,8 @@ struct usb_serial_driver { struct device_driver driver; struct usb_driver *usb_driver; struct usb_dynids dynids; - int max_in_flight_urbs; + + unsigned char multi_urb_write:1; size_t bulk_in_size; size_t bulk_out_size; -- cgit v1.2.3-58-ga151 From eaa3bcb06aed1ac1d6d9e3edd3b5f72ea57a6ac0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:08 +0100 Subject: USB: serial: generalise write buffer preparation Generalise write buffer preparation. This allows for drivers to manipulate (e.g. add headers) to bulk out data before it is sent. This adds a new function pointer to usb_serial_driver: int (*prepare_write_buffer)(struct usb_serial_port *port, void **dest, size_t size, const void *src, size_t count); The function is generic and can be used with either kfifo-based or multi-urb writes: If *dest is NULL the implementation should allocate dest. If src is NULL the implementation should use the port write fifo. If not set, a generic implementation is used which simply uses memcpy or kfifo_out. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 47 +++++++++++++++++++++++++++++------------ drivers/usb/serial/usb-serial.c | 1 + include/linux/usb/serial.h | 5 +++++ 3 files changed, 40 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index ad4823bbfa19..1a134f9c64f3 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -167,12 +167,35 @@ void usb_serial_generic_close(struct usb_serial_port *port) } EXPORT_SYMBOL_GPL(usb_serial_generic_close); +int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, + void **dest, size_t size, const void *src, size_t count) +{ + if (!*dest) { + size = count; + *dest = kmalloc(count, GFP_ATOMIC); + if (!*dest) { + dev_err(&port->dev, "%s - could not allocate buffer\n", + __func__); + return -ENOMEM; + } + } + if (src) { + count = size; + memcpy(*dest, src, size); + } else { + count = kfifo_out_locked(&port->write_fifo, *dest, size, + &port->lock); + } + return count; +} +EXPORT_SYMBOL_GPL(usb_serial_generic_prepare_write_buffer); + static int usb_serial_multi_urb_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { unsigned long flags; struct urb *urb; - unsigned char *buffer; + void *buffer; int status; spin_lock_irqsave(&port->lock, flags); @@ -191,16 +214,14 @@ static int usb_serial_multi_urb_write(struct tty_struct *tty, goto err_urb; } + buffer = NULL; count = min_t(int, count, PAGE_SIZE); - buffer = kmalloc(count, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "%s - could not allocate buffer\n", - __func__); - status = -ENOMEM; + count = port->serial->type->prepare_write_buffer(port, &buffer, 0, + buf, count); + if (count < 0) { + status = count; goto err_buf; } - - memcpy(buffer, buf, count); usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); usb_fill_bulk_urb(urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, @@ -242,7 +263,6 @@ err_urb: */ static int usb_serial_generic_write_start(struct usb_serial_port *port) { - unsigned char *data; int result; int count; unsigned long flags; @@ -255,10 +275,11 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) port->write_urb_busy = 1; spin_unlock_irqrestore(&port->lock, flags); - data = port->write_urb->transfer_buffer; - count = kfifo_out_locked(&port->write_fifo, data, port->bulk_out_size, &port->lock); - usb_serial_debug_data(debug, &port->dev, __func__, count, data); - + count = port->serial->type->prepare_write_buffer(port, + &port->write_urb->transfer_buffer, + port->bulk_out_size, NULL, 0); + usb_serial_debug_data(debug, &port->dev, __func__, + count, port->write_urb->transfer_buffer); port->write_urb->transfer_buffer_length = count; /* send the data out the bulk port */ diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 1b924425089f..8249fd8381fb 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1299,6 +1299,7 @@ static void fixup_generic(struct usb_serial_driver *device) set_to_generic_if_null(device, disconnect); set_to_generic_if_null(device, release); set_to_generic_if_null(device, process_read_urb); + set_to_generic_if_null(device, prepare_write_buffer); } int usb_serial_register(struct usb_serial_driver *driver) diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 2a3283761600..a4c99ea390e7 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -277,6 +277,9 @@ struct usb_serial_driver { void (*write_bulk_callback)(struct urb *urb); /* Called by the generic read bulk callback */ void (*process_read_urb)(struct urb *urb); + /* Called by the generic write implementation */ + int (*prepare_write_buffer)(struct usb_serial_port *port, + void **dest, size_t size, const void *src, size_t count); }; #define to_usb_serial_driver(d) \ container_of(d, struct usb_serial_driver, driver) @@ -329,6 +332,8 @@ extern void usb_serial_generic_deregister(void); extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags); extern void usb_serial_generic_process_read_urb(struct urb *urb); +extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, + void **dest, size_t size, const void *src, size_t count); extern int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, unsigned int ch); -- cgit v1.2.3-58-ga151 From e49bbce133a049f6f325db6b0cee49f406d03a6e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:06:09 +0100 Subject: USB: ftdi_sio: fix some coding style issues Remove unnecessary comments stating function names at (some) opening/closing braces. Fix some whitespace issues. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 45 ++++++++++++++----------------------------- 1 file changed, 14 insertions(+), 31 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 01efe6dda05c..6e437f9e4b9b 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -982,7 +982,7 @@ static int update_mctrl(struct usb_serial_port *port, unsigned int set, static __u32 get_ftdi_divisor(struct tty_struct *tty, struct usb_serial_port *port) -{ /* get_ftdi_divisor */ +{ struct ftdi_private *priv = usb_get_serial_port_data(port); __u32 div_value = 0; int div_okay = 1; @@ -1206,12 +1206,11 @@ static int get_serial_info(struct usb_serial_port *port, if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; return 0; -} /* get_serial_info */ - +} static int set_serial_info(struct tty_struct *tty, struct usb_serial_port *port, struct serial_struct __user *newinfo) -{ /* set_serial_info */ +{ struct ftdi_private *priv = usb_get_serial_port_data(port); struct serial_struct new_serial; struct ftdi_private old_priv; @@ -1274,8 +1273,7 @@ check_and_exit: else mutex_unlock(&priv->cfg_lock); return 0; - -} /* set_serial_info */ +} /* Determine type of FTDI chip based on USB config and descriptor. */ @@ -1577,7 +1575,7 @@ static void ftdi_USB_UIRT_setup(struct ftdi_private *priv) priv->flags |= ASYNC_SPD_CUST; priv->custom_divisor = 77; priv->force_baud = 38400; -} /* ftdi_USB_UIRT_setup */ +} /* Setup for the HE-TIRA1 device, which requires hardwired * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */ @@ -1590,7 +1588,7 @@ static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv) priv->custom_divisor = 240; priv->force_baud = 38400; priv->force_rtscts = 1; -} /* ftdi_HE_TIRA1_setup */ +} /* * Module parameter to control latency timer for NDI FTDI-based USB devices. @@ -1684,7 +1682,7 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port) } static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) -{ /* ftdi_open */ +{ struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); int result; @@ -1714,8 +1712,7 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) kref_get(&priv->kref); return result; -} /* ftdi_open */ - +} static void ftdi_dtr_rts(struct usb_serial_port *port, int on) { @@ -1745,12 +1742,9 @@ static void ftdi_dtr_rts(struct usb_serial_port *port, int on) * usbserial:__serial_close only calls ftdi_close if the point is open * * This only gets called when it is the last close - * - * */ - static void ftdi_close(struct usb_serial_port *port) -{ /* ftdi_close */ +{ struct ftdi_private *priv = usb_get_serial_port_data(port); dbg("%s", __func__); @@ -1758,9 +1752,7 @@ static void ftdi_close(struct usb_serial_port *port) /* shutdown our bulk read */ usb_kill_urb(port->read_urb); kref_put(&priv->kref, ftdi_sio_priv_release); -} /* ftdi_close */ - - +} /* The SIO requires the first byte to have: * B0 1 @@ -1771,7 +1763,7 @@ static void ftdi_close(struct usb_serial_port *port) */ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) -{ /* ftdi_write */ +{ struct ftdi_private *priv = usb_get_serial_port_data(port); struct urb *urb; unsigned char *buffer; @@ -1887,11 +1879,9 @@ error_no_buffer: priv->tx_outstanding_urbs--; spin_unlock_irqrestore(&priv->tx_lock, flags); return count; -} /* ftdi_write */ - +} /* This function may get called when the device is closed */ - static void ftdi_write_bulk_callback(struct urb *urb) { unsigned long flags; @@ -1928,8 +1918,7 @@ static void ftdi_write_bulk_callback(struct urb *urb) } usb_serial_port_softint(port); -} /* ftdi_write_bulk_callback */ - +} static int ftdi_write_room(struct tty_struct *tty) { @@ -2095,15 +2084,13 @@ static void ftdi_break_ctl(struct tty_struct *tty, int break_state) } - /* old_termios contains the original termios settings and tty->termios contains * the new setting to be used * WARNING: set_termios calls this with old_termios in kernel space */ - static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) -{ /* ftdi_termios */ +{ struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); struct ktermios *termios = tty->termios; @@ -2331,7 +2318,6 @@ static int ftdi_tiocmset(struct tty_struct *tty, struct file *file, return update_mctrl(port, set, clear); } - static int ftdi_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { @@ -2430,15 +2416,12 @@ failed_sio_register: return retval; } - static void __exit ftdi_exit(void) { - dbg("%s", __func__); usb_deregister(&ftdi_driver); usb_serial_deregister(&ftdi_sio_device); - } -- cgit v1.2.3-58-ga151 From 71adf118946957839a13aa4d1094183e05c6c094 Mon Sep 17 00:00:00 2001 From: Fabien Chouteau Date: Thu, 8 Apr 2010 09:31:15 +0200 Subject: USB: gadget: add HID gadget driver g_hid is a USB gadget driver implementing the Human Interface Device class specification. The driver handles basic HID protocol handling in the kernel, and allows userspace to read/write HID reports trough /dev/hidgX character devices. Signed-off-by: Fabien Chouteau Signed-off-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/gadget_hid.txt | 445 ++++++++++++++++++++++++++ drivers/usb/gadget/Kconfig | 11 + drivers/usb/gadget/Makefile | 2 + drivers/usb/gadget/f_hid.c | 673 +++++++++++++++++++++++++++++++++++++++ drivers/usb/gadget/hid.c | 288 +++++++++++++++++ include/linux/usb/g_hid.h | 32 ++ 6 files changed, 1451 insertions(+) create mode 100644 Documentation/usb/gadget_hid.txt create mode 100644 drivers/usb/gadget/f_hid.c create mode 100644 drivers/usb/gadget/hid.c create mode 100644 include/linux/usb/g_hid.h (limited to 'drivers') diff --git a/Documentation/usb/gadget_hid.txt b/Documentation/usb/gadget_hid.txt new file mode 100644 index 000000000000..f4a51f567427 --- /dev/null +++ b/Documentation/usb/gadget_hid.txt @@ -0,0 +1,445 @@ + + Linux USB HID gadget driver + +Introduction + + The HID Gadget driver provides emulation of USB Human Interface + Devices (HID). The basic HID handling is done in the kernel, + and HID reports can be sent/received through I/O on the + /dev/hidgX character devices. + + For more details about HID, see the developer page on + http://www.usb.org/developers/hidpage/ + +Configuration + + g_hid is a platform driver, so to use it you need to add + struct platform_device(s) to your platform code defining the + HID function descriptors you want to use - E.G. something + like: + +#include +#include + +/* hid descriptor for a keyboard */ +static struct hidg_func_descriptor my_hid_data = { + .subclass = 0, /* No subclass */ + .protocol = 1, /* Keyboard */ + .report_length = 8, + .report_desc_length = 63, + .report_desc = { + 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ + 0x09, 0x06, /* USAGE (Keyboard) */ + 0xa1, 0x01, /* COLLECTION (Application) */ + 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ + 0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl) */ + 0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI) */ + 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ + 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ + 0x75, 0x01, /* REPORT_SIZE (1) */ + 0x95, 0x08, /* REPORT_COUNT (8) */ + 0x81, 0x02, /* INPUT (Data,Var,Abs) */ + 0x95, 0x01, /* REPORT_COUNT (1) */ + 0x75, 0x08, /* REPORT_SIZE (8) */ + 0x81, 0x03, /* INPUT (Cnst,Var,Abs) */ + 0x95, 0x05, /* REPORT_COUNT (5) */ + 0x75, 0x01, /* REPORT_SIZE (1) */ + 0x05, 0x08, /* USAGE_PAGE (LEDs) */ + 0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */ + 0x29, 0x05, /* USAGE_MAXIMUM (Kana) */ + 0x91, 0x02, /* OUTPUT (Data,Var,Abs) */ + 0x95, 0x01, /* REPORT_COUNT (1) */ + 0x75, 0x03, /* REPORT_SIZE (3) */ + 0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) */ + 0x95, 0x06, /* REPORT_COUNT (6) */ + 0x75, 0x08, /* REPORT_SIZE (8) */ + 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ + 0x25, 0x65, /* LOGICAL_MAXIMUM (101) */ + 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ + 0x19, 0x00, /* USAGE_MINIMUM (Reserved) */ + 0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application) */ + 0x81, 0x00, /* INPUT (Data,Ary,Abs) */ + 0xc0 /* END_COLLECTION */ + } +}; + +static struct platform_device my_hid = { + .name = "hidg", + .id = 0, + .num_resources = 0, + .resource = 0, + .dev.platform_data = &my_hid_data, +}; + + You can add as many HID functions as you want, only limited by + the amount of interrupt endpoints your gadget driver supports. + +Send and receive HID reports + + HID reports can be sent/received using read/write on the + /dev/hidgX character devices. See below for an example program + to do this. + + hid_gadget_test is a small interactive program to test the HID + gadget driver. To use, point it at a hidg device and set the + device type (keyboard / mouse / joystick) - E.G.: + + # hid_gadget_test /dev/hidg0 keyboard + + You are now in the prompt of hid_gadget_test. You can type any + combination of options and values. Available options and + values are listed at program start. In keyboard mode you can + send up to six values. + + For example type: g i s t r --left-shift + + Hit return and the corresponding report will be sent by the + HID gadget. + + Another interesting example is the caps lock test. Type + -–caps-lock and hit return. A report is then sent by the + gadget and you should receive the host answer, corresponding + to the caps lock LED status. + + --caps-lock + recv report:2 + + With this command: + + # hid_gadget_test /dev/hidg1 mouse + + You can test the mouse emulation. Values are two signed numbers. + + +Sample code + +/* hid_gadget_test */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BUF_LEN 512 + +struct options { + const char *opt; + unsigned char val; +}; + +static struct options kmod[] = { + {.opt = "--left-ctrl", .val = 0x01}, + {.opt = "--right-ctrl", .val = 0x10}, + {.opt = "--left-shift", .val = 0x02}, + {.opt = "--right-shift", .val = 0x20}, + {.opt = "--left-alt", .val = 0x04}, + {.opt = "--right-alt", .val = 0x40}, + {.opt = "--left-meta", .val = 0x08}, + {.opt = "--right-meta", .val = 0x80}, + {.opt = NULL} +}; + +static struct options kval[] = { + {.opt = "--return", .val = 0x28}, + {.opt = "--esc", .val = 0x29}, + {.opt = "--bckspc", .val = 0x2a}, + {.opt = "--tab", .val = 0x2b}, + {.opt = "--spacebar", .val = 0x2c}, + {.opt = "--caps-lock", .val = 0x39}, + {.opt = "--f1", .val = 0x3a}, + {.opt = "--f2", .val = 0x3b}, + {.opt = "--f3", .val = 0x3c}, + {.opt = "--f4", .val = 0x3d}, + {.opt = "--f5", .val = 0x3e}, + {.opt = "--f6", .val = 0x3f}, + {.opt = "--f7", .val = 0x40}, + {.opt = "--f8", .val = 0x41}, + {.opt = "--f9", .val = 0x42}, + {.opt = "--f10", .val = 0x43}, + {.opt = "--f11", .val = 0x44}, + {.opt = "--f12", .val = 0x45}, + {.opt = "--insert", .val = 0x49}, + {.opt = "--home", .val = 0x4a}, + {.opt = "--pageup", .val = 0x4b}, + {.opt = "--del", .val = 0x4c}, + {.opt = "--end", .val = 0x4d}, + {.opt = "--pagedown", .val = 0x4e}, + {.opt = "--right", .val = 0x4f}, + {.opt = "--left", .val = 0x50}, + {.opt = "--down", .val = 0x51}, + {.opt = "--kp-enter", .val = 0x58}, + {.opt = "--up", .val = 0x52}, + {.opt = "--num-lock", .val = 0x53}, + {.opt = NULL} +}; + +int keyboard_fill_report(char report[8], char buf[BUF_LEN], int *hold) +{ + char *tok = strtok(buf, " "); + int key = 0; + int i = 0; + + for (; tok != NULL; tok = strtok(NULL, " ")) { + + if (strcmp(tok, "--quit") == 0) + return -1; + + if (strcmp(tok, "--hold") == 0) { + *hold = 1; + continue; + } + + if (key < 6) { + for (i = 0; kval[i].opt != NULL; i++) + if (strcmp(tok, kval[i].opt) == 0) { + report[2 + key++] = kval[i].val; + break; + } + if (kval[i].opt != NULL) + continue; + } + + if (key < 6) + if (islower(tok[0])) { + report[2 + key++] = (tok[0] - ('a' - 0x04)); + continue; + } + + for (i = 0; kmod[i].opt != NULL; i++) + if (strcmp(tok, kmod[i].opt) == 0) { + report[0] = report[0] | kmod[i].val; + break; + } + if (kmod[i].opt != NULL) + continue; + + if (key < 6) + fprintf(stderr, "unknown option: %s\n", tok); + } + return 8; +} + +static struct options mmod[] = { + {.opt = "--b1", .val = 0x01}, + {.opt = "--b2", .val = 0x02}, + {.opt = "--b3", .val = 0x04}, + {.opt = NULL} +}; + +int mouse_fill_report(char report[8], char buf[BUF_LEN], int *hold) +{ + char *tok = strtok(buf, " "); + int mvt = 0; + int i = 0; + for (; tok != NULL; tok = strtok(NULL, " ")) { + + if (strcmp(tok, "--quit") == 0) + return -1; + + if (strcmp(tok, "--hold") == 0) { + *hold = 1; + continue; + } + + for (i = 0; mmod[i].opt != NULL; i++) + if (strcmp(tok, mmod[i].opt) == 0) { + report[0] = report[0] | mmod[i].val; + break; + } + if (mmod[i].opt != NULL) + continue; + + if (!(tok[0] == '-' && tok[1] == '-') && mvt < 2) { + errno = 0; + report[1 + mvt++] = (char)strtol(tok, NULL, 0); + if (errno != 0) { + fprintf(stderr, "Bad value:'%s'\n", tok); + report[1 + mvt--] = 0; + } + continue; + } + + fprintf(stderr, "unknown option: %s\n", tok); + } + return 3; +} + +static struct options jmod[] = { + {.opt = "--b1", .val = 0x10}, + {.opt = "--b2", .val = 0x20}, + {.opt = "--b3", .val = 0x40}, + {.opt = "--b4", .val = 0x80}, + {.opt = "--hat1", .val = 0x00}, + {.opt = "--hat2", .val = 0x01}, + {.opt = "--hat3", .val = 0x02}, + {.opt = "--hat4", .val = 0x03}, + {.opt = "--hatneutral", .val = 0x04}, + {.opt = NULL} +}; + +int joystick_fill_report(char report[8], char buf[BUF_LEN], int *hold) +{ + char *tok = strtok(buf, " "); + int mvt = 0; + int i = 0; + + *hold = 1; + + /* set default hat position: neutral */ + report[3] = 0x04; + + for (; tok != NULL; tok = strtok(NULL, " ")) { + + if (strcmp(tok, "--quit") == 0) + return -1; + + for (i = 0; jmod[i].opt != NULL; i++) + if (strcmp(tok, jmod[i].opt) == 0) { + report[3] = (report[3] & 0xF0) | jmod[i].val; + break; + } + if (jmod[i].opt != NULL) + continue; + + if (!(tok[0] == '-' && tok[1] == '-') && mvt < 3) { + errno = 0; + report[mvt++] = (char)strtol(tok, NULL, 0); + if (errno != 0) { + fprintf(stderr, "Bad value:'%s'\n", tok); + report[mvt--] = 0; + } + continue; + } + + fprintf(stderr, "unknown option: %s\n", tok); + } + return 4; +} + +void print_options(char c) +{ + int i = 0; + + if (c == 'k') { + printf(" keyboard options:\n" + " --hold\n"); + for (i = 0; kmod[i].opt != NULL; i++) + printf("\t\t%s\n", kmod[i].opt); + printf("\n keyboard values:\n" + " [a-z] or\n"); + for (i = 0; kval[i].opt != NULL; i++) + printf("\t\t%-8s%s", kval[i].opt, i % 2 ? "\n" : ""); + printf("\n"); + } else if (c == 'm') { + printf(" mouse options:\n" + " --hold\n"); + for (i = 0; mmod[i].opt != NULL; i++) + printf("\t\t%s\n", mmod[i].opt); + printf("\n mouse values:\n" + " Two signed numbers\n" + "--quit to close\n"); + } else { + printf(" joystick options:\n"); + for (i = 0; jmod[i].opt != NULL; i++) + printf("\t\t%s\n", jmod[i].opt); + printf("\n joystick values:\n" + " three signed numbers\n" + "--quit to close\n"); + } +} + +int main(int argc, const char *argv[]) +{ + const char *filename = NULL; + int fd = 0; + char buf[BUF_LEN]; + int cmd_len; + char report[8]; + int to_send = 8; + int hold = 0; + fd_set rfds; + int retval, i; + + if (argc < 3) { + fprintf(stderr, "Usage: %s devname mouse|keyboard|joystick\n", + argv[0]); + return 1; + } + + if (argv[2][0] != 'k' && argv[2][0] != 'm' && argv[2][0] != 'j') + return 2; + + filename = argv[1]; + + if ((fd = open(filename, O_RDWR, 0666)) == -1) { + perror(filename); + return 3; + } + + print_options(argv[2][0]); + + while (42) { + + FD_ZERO(&rfds); + FD_SET(STDIN_FILENO, &rfds); + FD_SET(fd, &rfds); + + retval = select(fd + 1, &rfds, NULL, NULL, NULL); + if (retval == -1 && errno == EINTR) + continue; + if (retval < 0) { + perror("select()"); + return 4; + } + + if (FD_ISSET(fd, &rfds)) { + cmd_len = read(fd, buf, BUF_LEN - 1); + printf("recv report:"); + for (i = 0; i < cmd_len; i++) + printf(" %02x", buf[i]); + printf("\n"); + } + + if (FD_ISSET(STDIN_FILENO, &rfds)) { + memset(report, 0x0, sizeof(report)); + cmd_len = read(STDIN_FILENO, buf, BUF_LEN - 1); + + if (cmd_len == 0) + break; + + buf[cmd_len - 1] = '\0'; + hold = 0; + + memset(report, 0x0, sizeof(report)); + if (argv[2][0] == 'k') + to_send = keyboard_fill_report(report, buf, &hold); + else if (argv[2][0] == 'm') + to_send = mouse_fill_report(report, buf, &hold); + else + to_send = joystick_fill_report(report, buf, &hold); + + if (to_send == -1) + break; + + if (write(fd, report, to_send) != to_send) { + perror(filename); + return 5; + } + if (!hold) { + memset(report, 0x0, sizeof(report)); + if (write(fd, report, to_send) != to_send) { + perror(filename); + return 6; + } + } + } + } + + close(fd); + return 0; +} diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 11a3e0fa4331..390c13372bdc 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -863,6 +863,17 @@ config USB_G_MULTI_CDC If unsure, say "y". +config USB_G_HID + tristate "HID Gadget" + help + The HID gadget driver provides generic emulation of USB + Human Interface Devices (HID). + + For more information, see Documentation/usb/gadget_hid.txt which + includes sample code for accessing the device files. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "g_hid". # put drivers that need isochronous transfer support (for audio # or video class gadget drivers), or specific hardware, here. diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 43b51da8d727..3075ff9cae62 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -43,6 +43,7 @@ g_mass_storage-objs := mass_storage.o g_printer-objs := printer.o g_cdc-objs := cdc2.o g_multi-objs := multi.o +g_hid-objs := hid.o g_nokia-objs := nokia.o obj-$(CONFIG_USB_ZERO) += g_zero.o @@ -55,6 +56,7 @@ obj-$(CONFIG_USB_G_SERIAL) += g_serial.o obj-$(CONFIG_USB_G_PRINTER) += g_printer.o obj-$(CONFIG_USB_MIDI_GADGET) += g_midi.o obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o +obj-$(CONFIG_USB_G_HID) += g_hid.o obj-$(CONFIG_USB_G_MULTI) += g_multi.o obj-$(CONFIG_USB_G_NOKIA) += g_nokia.o diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c new file mode 100644 index 000000000000..1e00ff9866af --- /dev/null +++ b/drivers/usb/gadget/f_hid.c @@ -0,0 +1,673 @@ +/* + * f_hid.c -- USB HID function driver + * + * Copyright (C) 2010 Fabien Chouteau + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int major, minors; +static struct class *hidg_class; + +/*-------------------------------------------------------------------------*/ +/* HID gadget struct */ + +struct f_hidg { + /* configuration */ + unsigned char bInterfaceSubClass; + unsigned char bInterfaceProtocol; + unsigned short report_desc_length; + char *report_desc; + unsigned short report_length; + + /* recv report */ + char *set_report_buff; + unsigned short set_report_length; + spinlock_t spinlock; + wait_queue_head_t read_queue; + + /* send report */ + struct mutex lock; + bool write_pending; + wait_queue_head_t write_queue; + struct usb_request *req; + + int minor; + struct cdev cdev; + struct usb_function func; + struct usb_ep *in_ep; + struct usb_endpoint_descriptor *fs_in_ep_desc; + struct usb_endpoint_descriptor *hs_in_ep_desc; +}; + +static inline struct f_hidg *func_to_hidg(struct usb_function *f) +{ + return container_of(f, struct f_hidg, func); +} + +/*-------------------------------------------------------------------------*/ +/* Static descriptors */ + +static struct usb_interface_descriptor hidg_interface_desc = { + .bLength = sizeof hidg_interface_desc, + .bDescriptorType = USB_DT_INTERFACE, + /* .bInterfaceNumber = DYNAMIC */ + .bAlternateSetting = 0, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_HID, + /* .bInterfaceSubClass = DYNAMIC */ + /* .bInterfaceProtocol = DYNAMIC */ + /* .iInterface = DYNAMIC */ +}; + +static struct hid_descriptor hidg_desc = { + .bLength = sizeof hidg_desc, + .bDescriptorType = HID_DT_HID, + .bcdHID = 0x0101, + .bCountryCode = 0x00, + .bNumDescriptors = 0x1, + /*.desc[0].bDescriptorType = DYNAMIC */ + /*.desc[0].wDescriptorLenght = DYNAMIC */ +}; + +/* High-Speed Support */ + +static struct usb_endpoint_descriptor hidg_hs_in_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 4, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + +static struct usb_descriptor_header *hidg_hs_descriptors[] = { + (struct usb_descriptor_header *)&hidg_interface_desc, + (struct usb_descriptor_header *)&hidg_desc, + (struct usb_descriptor_header *)&hidg_hs_in_ep_desc, + NULL, +}; + +/* Full-Speed Support */ + +static struct usb_endpoint_descriptor hidg_fs_in_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 10, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + +static struct usb_descriptor_header *hidg_fs_descriptors[] = { + (struct usb_descriptor_header *)&hidg_interface_desc, + (struct usb_descriptor_header *)&hidg_desc, + (struct usb_descriptor_header *)&hidg_fs_in_ep_desc, + NULL, +}; + +/*-------------------------------------------------------------------------*/ +/* Char Device */ + +static ssize_t f_hidg_read(struct file *file, char __user *buffer, + size_t count, loff_t *ptr) +{ + struct f_hidg *hidg = (struct f_hidg *)file->private_data; + char *tmp_buff = NULL; + unsigned long flags; + + if (!count) + return 0; + + if (!access_ok(VERIFY_WRITE, buffer, count)) + return -EFAULT; + + spin_lock_irqsave(&hidg->spinlock, flags); + +#define READ_COND (hidg->set_report_buff != NULL) + + while (!READ_COND) { + spin_unlock_irqrestore(&hidg->spinlock, flags); + if (file->f_flags & O_NONBLOCK) + return -EAGAIN; + + if (wait_event_interruptible(hidg->read_queue, READ_COND)) + return -ERESTARTSYS; + + spin_lock_irqsave(&hidg->spinlock, flags); + } + + + count = min_t(unsigned, count, hidg->set_report_length); + tmp_buff = hidg->set_report_buff; + hidg->set_report_buff = NULL; + + spin_unlock_irqrestore(&hidg->spinlock, flags); + + if (tmp_buff != NULL) { + /* copy to user outside spinlock */ + count -= copy_to_user(buffer, tmp_buff, count); + kfree(tmp_buff); + } else + count = -ENOMEM; + + return count; +} + +static void f_hidg_req_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_hidg *hidg = (struct f_hidg *)ep->driver_data; + + if (req->status != 0) { + ERROR(hidg->func.config->cdev, + "End Point Request ERROR: %d\n", req->status); + } + + hidg->write_pending = 0; + wake_up(&hidg->write_queue); +} + +static ssize_t f_hidg_write(struct file *file, const char __user *buffer, + size_t count, loff_t *offp) +{ + struct f_hidg *hidg = (struct f_hidg *)file->private_data; + ssize_t status = -ENOMEM; + + if (!access_ok(VERIFY_READ, buffer, count)) + return -EFAULT; + + mutex_lock(&hidg->lock); + +#define WRITE_COND (!hidg->write_pending) + + /* write queue */ + while (!WRITE_COND) { + mutex_unlock(&hidg->lock); + if (file->f_flags & O_NONBLOCK) + return -EAGAIN; + + if (wait_event_interruptible_exclusive( + hidg->write_queue, WRITE_COND)) + return -ERESTARTSYS; + + mutex_lock(&hidg->lock); + } + + count = min_t(unsigned, count, hidg->report_length); + status = copy_from_user(hidg->req->buf, buffer, count); + + if (status != 0) { + ERROR(hidg->func.config->cdev, + "copy_from_user error\n"); + mutex_unlock(&hidg->lock); + return -EINVAL; + } + + hidg->req->status = 0; + hidg->req->zero = 0; + hidg->req->length = count; + hidg->req->complete = f_hidg_req_complete; + hidg->req->context = hidg; + hidg->write_pending = 1; + + status = usb_ep_queue(hidg->in_ep, hidg->req, GFP_ATOMIC); + if (status < 0) { + ERROR(hidg->func.config->cdev, + "usb_ep_queue error on int endpoint %zd\n", status); + hidg->write_pending = 0; + wake_up(&hidg->write_queue); + } else { + status = count; + } + + mutex_unlock(&hidg->lock); + + return status; +} + +static unsigned int f_hidg_poll(struct file *file, poll_table *wait) +{ + struct f_hidg *hidg = (struct f_hidg *)file->private_data; + unsigned int ret = 0; + + poll_wait(file, &hidg->read_queue, wait); + poll_wait(file, &hidg->write_queue, wait); + + if (WRITE_COND) + ret |= POLLOUT | POLLWRNORM; + + if (READ_COND) + ret |= POLLIN | POLLRDNORM; + + return ret; +} + +#undef WRITE_COND +#undef READ_COND + +static int f_hidg_release(struct inode *inode, struct file *fd) +{ + fd->private_data = NULL; + return 0; +} + +static int f_hidg_open(struct inode *inode, struct file *fd) +{ + struct f_hidg *hidg = + container_of(inode->i_cdev, struct f_hidg, cdev); + + fd->private_data = hidg; + + return 0; +} + +/*-------------------------------------------------------------------------*/ +/* usb_function */ + +static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_hidg *hidg = (struct f_hidg *)req->context; + + if (req->status != 0 || req->buf == NULL || req->actual == 0) { + ERROR(hidg->func.config->cdev, "%s FAILED\n", __func__); + return; + } + + spin_lock(&hidg->spinlock); + + hidg->set_report_buff = krealloc(hidg->set_report_buff, + req->actual, GFP_ATOMIC); + + if (hidg->set_report_buff == NULL) { + spin_unlock(&hidg->spinlock); + return; + } + hidg->set_report_length = req->actual; + memcpy(hidg->set_report_buff, req->buf, req->actual); + + spin_unlock(&hidg->spinlock); + + wake_up(&hidg->read_queue); + + return; +} + +static int hidg_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_hidg *hidg = func_to_hidg(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int status = 0; + __u16 value, length; + + value = __le16_to_cpu(ctrl->wValue); + length = __le16_to_cpu(ctrl->wLength); + + VDBG(cdev, "hid_setup crtl_request : bRequestType:0x%x bRequest:0x%x " + "Value:0x%x\n", ctrl->bRequestType, ctrl->bRequest, value); + + switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 + | HID_REQ_GET_REPORT): + VDBG(cdev, "get_report\n"); + + /* send an empty report */ + length = min_t(unsigned, length, hidg->report_length); + memset(req->buf, 0x0, length); + + goto respond; + break; + + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 + | HID_REQ_GET_PROTOCOL): + VDBG(cdev, "get_protocol\n"); + goto stall; + break; + + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 + | HID_REQ_SET_REPORT): + VDBG(cdev, "set_report | wLenght=%d\n", ctrl->wLength); + req->context = hidg; + req->complete = hidg_set_report_complete; + goto respond; + break; + + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 + | HID_REQ_SET_PROTOCOL): + VDBG(cdev, "set_protocol\n"); + goto stall; + break; + + case ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8 + | USB_REQ_GET_DESCRIPTOR): + switch (value >> 8) { + case HID_DT_REPORT: + VDBG(cdev, "USB_REQ_GET_DESCRIPTOR: REPORT\n"); + length = min_t(unsigned short, length, + hidg->report_desc_length); + memcpy(req->buf, hidg->report_desc, length); + goto respond; + break; + + default: + VDBG(cdev, "Unknown decriptor request 0x%x\n", + value >> 8); + goto stall; + break; + } + break; + + default: + VDBG(cdev, "Unknown request 0x%x\n", + ctrl->bRequest); + goto stall; + break; + } + +stall: + return -EOPNOTSUPP; + +respond: + req->zero = 0; + req->length = length; + status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (status < 0) + ERROR(cdev, "usb_ep_queue error on ep0 %d\n", value); + return status; +} + +static void hidg_disable(struct usb_function *f) +{ + struct f_hidg *hidg = func_to_hidg(f); + + usb_ep_disable(hidg->in_ep); + hidg->in_ep->driver_data = NULL; + + return; +} + +static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct usb_composite_dev *cdev = f->config->cdev; + struct f_hidg *hidg = func_to_hidg(f); + const struct usb_endpoint_descriptor *ep_desc; + int status = 0; + + VDBG(cdev, "hidg_set_alt intf:%d alt:%d\n", intf, alt); + + if (hidg->in_ep != NULL) { + /* restart endpoint */ + if (hidg->in_ep->driver_data != NULL) + usb_ep_disable(hidg->in_ep); + + ep_desc = ep_choose(f->config->cdev->gadget, + hidg->hs_in_ep_desc, hidg->fs_in_ep_desc); + status = usb_ep_enable(hidg->in_ep, ep_desc); + if (status < 0) { + ERROR(cdev, "Enable endpoint FAILED!\n"); + goto fail; + } + hidg->in_ep->driver_data = hidg; + } +fail: + return status; +} + +const struct file_operations f_hidg_fops = { + .owner = THIS_MODULE, + .open = f_hidg_open, + .release = f_hidg_release, + .write = f_hidg_write, + .read = f_hidg_read, + .poll = f_hidg_poll, +}; + +static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_ep *ep; + struct f_hidg *hidg = func_to_hidg(f); + int status; + dev_t dev; + + /* allocate instance-specific interface IDs, and patch descriptors */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + hidg_interface_desc.bInterfaceNumber = status; + + + /* allocate instance-specific endpoints */ + status = -ENODEV; + ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_in_ep_desc); + if (!ep) + goto fail; + ep->driver_data = c->cdev; /* claim */ + hidg->in_ep = ep; + + /* preallocate request and buffer */ + status = -ENOMEM; + hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL); + if (!hidg->req) + goto fail; + + + hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL); + if (!hidg->req->buf) + goto fail; + + /* set descriptor dynamic values */ + hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass; + hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; + hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_desc.desc[0].bDescriptorType = HID_DT_REPORT; + hidg_desc.desc[0].wDescriptorLength = + cpu_to_le16(hidg->report_desc_length); + + hidg->set_report_buff = NULL; + + /* copy descriptors */ + f->descriptors = usb_copy_descriptors(hidg_fs_descriptors); + if (!f->descriptors) + goto fail; + + hidg->fs_in_ep_desc = usb_find_endpoint(hidg_fs_descriptors, + f->descriptors, + &hidg_fs_in_ep_desc); + + if (gadget_is_dualspeed(c->cdev->gadget)) { + hidg_hs_in_ep_desc.bEndpointAddress = + hidg_fs_in_ep_desc.bEndpointAddress; + f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors); + if (!f->hs_descriptors) + goto fail; + hidg->hs_in_ep_desc = usb_find_endpoint(hidg_hs_descriptors, + f->hs_descriptors, + &hidg_hs_in_ep_desc); + } else { + hidg->hs_in_ep_desc = NULL; + } + + mutex_init(&hidg->lock); + spin_lock_init(&hidg->spinlock); + init_waitqueue_head(&hidg->write_queue); + init_waitqueue_head(&hidg->read_queue); + + /* create char device */ + cdev_init(&hidg->cdev, &f_hidg_fops); + dev = MKDEV(major, hidg->minor); + status = cdev_add(&hidg->cdev, dev, 1); + if (status) + goto fail; + + device_create(hidg_class, NULL, dev, NULL, "%s%d", "hidg", hidg->minor); + + return 0; + +fail: + ERROR(f->config->cdev, "hidg_bind FAILED\n"); + if (hidg->req != NULL) { + kfree(hidg->req->buf); + if (hidg->in_ep != NULL) + usb_ep_free_request(hidg->in_ep, hidg->req); + } + + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + + return status; +} + +static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_hidg *hidg = func_to_hidg(f); + + device_destroy(hidg_class, MKDEV(major, hidg->minor)); + cdev_del(&hidg->cdev); + + /* disable/free request and end point */ + usb_ep_disable(hidg->in_ep); + usb_ep_dequeue(hidg->in_ep, hidg->req); + kfree(hidg->req->buf); + usb_ep_free_request(hidg->in_ep, hidg->req); + + /* free descriptors copies */ + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + + kfree(hidg->report_desc); + kfree(hidg->set_report_buff); + kfree(hidg); +} + +/*-------------------------------------------------------------------------*/ +/* Strings */ + +#define CT_FUNC_HID_IDX 0 + +static struct usb_string ct_func_string_defs[] = { + [CT_FUNC_HID_IDX].s = "HID Interface", + {}, /* end of list */ +}; + +static struct usb_gadget_strings ct_func_string_table = { + .language = 0x0409, /* en-US */ + .strings = ct_func_string_defs, +}; + +static struct usb_gadget_strings *ct_func_strings[] = { + &ct_func_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ +/* usb_configuration */ + +int __init hidg_bind_config(struct usb_configuration *c, + struct hidg_func_descriptor *fdesc, int index) +{ + struct f_hidg *hidg; + int status; + + if (index >= minors) + return -ENOENT; + + /* maybe allocate device-global string IDs, and patch descriptors */ + if (ct_func_string_defs[CT_FUNC_HID_IDX].id == 0) { + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ct_func_string_defs[CT_FUNC_HID_IDX].id = status; + hidg_interface_desc.iInterface = status; + } + + /* allocate and initialize one new instance */ + hidg = kzalloc(sizeof *hidg, GFP_KERNEL); + if (!hidg) + return -ENOMEM; + + hidg->minor = index; + hidg->bInterfaceSubClass = fdesc->subclass; + hidg->bInterfaceProtocol = fdesc->protocol; + hidg->report_length = fdesc->report_length; + hidg->report_desc_length = fdesc->report_desc_length; + hidg->report_desc = kmemdup(fdesc->report_desc, + fdesc->report_desc_length, + GFP_KERNEL); + if (!hidg->report_desc) { + kfree(hidg); + return -ENOMEM; + } + + hidg->func.name = "hid"; + hidg->func.strings = ct_func_strings; + hidg->func.bind = hidg_bind; + hidg->func.unbind = hidg_unbind; + hidg->func.set_alt = hidg_set_alt; + hidg->func.disable = hidg_disable; + hidg->func.setup = hidg_setup; + + status = usb_add_function(c, &hidg->func); + if (status) + kfree(hidg); + + return status; +} + +int __init ghid_setup(struct usb_gadget *g, int count) +{ + int status; + dev_t dev; + + hidg_class = class_create(THIS_MODULE, "hidg"); + + status = alloc_chrdev_region(&dev, 0, count, "hidg"); + if (!status) { + major = MAJOR(dev); + minors = count; + } + + return status; +} + +void ghid_cleanup(void) +{ + if (major) { + unregister_chrdev_region(MKDEV(major, 0), minors); + major = minors = 0; + } + + class_destroy(hidg_class); + hidg_class = NULL; +} diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c new file mode 100644 index 000000000000..b77e97754b4a --- /dev/null +++ b/drivers/usb/gadget/hid.c @@ -0,0 +1,288 @@ +/* + * hid.c -- HID Composite driver + * + * Based on multi.c + * + * Copyright (C) 2010 Fabien Chouteau + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include +#include +#include + +#define DRIVER_DESC "HID Gadget" +#define DRIVER_VERSION "2010/03/16" + +/*-------------------------------------------------------------------------*/ + +#define HIDG_VENDOR_NUM 0x0525 /* XXX NetChip */ +#define HIDG_PRODUCT_NUM 0xa4ac /* Linux-USB HID gadget */ + +/*-------------------------------------------------------------------------*/ + +/* + * kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ + +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#include "f_hid.c" + + +struct hidg_func_node { + struct list_head node; + struct hidg_func_descriptor *func; +}; + +static LIST_HEAD(hidg_func_list); + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = cpu_to_le16(0x0200), + + /* .bDeviceClass = USB_CLASS_COMM, */ + /* .bDeviceSubClass = 0, */ + /* .bDeviceProtocol = 0, */ + .bDeviceClass = 0xEF, + .bDeviceSubClass = 2, + .bDeviceProtocol = 1, + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id can be overridden by module parameters. */ + .idVendor = cpu_to_le16(HIDG_VENDOR_NUM), + .idProduct = cpu_to_le16(HIDG_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + + + +/****************************** Configurations ******************************/ + +static int __init do_config(struct usb_configuration *c) +{ + struct hidg_func_node *e; + int func = 0, status = 0; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + list_for_each_entry(e, &hidg_func_list, node) { + status = hidg_bind_config(c, e->func, func++); + if (status) + break; + } + + return status; +} + +static struct usb_configuration config_driver = { + .label = "HID Gadget", + .bind = do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +/****************************** Gadget Bind ******************************/ + +static int __init hid_bind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + struct list_head *tmp; + int status, gcnum, funcs = 0; + + list_for_each(tmp, &hidg_func_list) + funcs++; + + if (!funcs) + return -ENODEV; + + /* set up HID */ + status = ghid_setup(cdev->gadget, funcs); + if (status < 0) + return status; + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); + else + device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); + + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + return status; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + return status; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; + + /* register our configuration */ + status = usb_add_config(cdev, &config_driver); + if (status < 0) + return status; + + dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); + + return 0; +} + +static int __exit hid_unbind(struct usb_composite_dev *cdev) +{ + ghid_cleanup(); + return 0; +} + +static int __init hidg_plat_driver_probe(struct platform_device *pdev) +{ + struct hidg_func_descriptor *func = pdev->dev.platform_data; + struct hidg_func_node *entry; + + if (!func) { + dev_err(&pdev->dev, "Platform data missing\n"); + return -ENODEV; + } + + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + + entry->func = func; + list_add_tail(&entry->node, &hidg_func_list); + + return 0; +} + +static int __devexit hidg_plat_driver_remove(struct platform_device *pdev) +{ + struct hidg_func_node *e, *n; + + list_for_each_entry_safe(e, n, &hidg_func_list, node) { + list_del(&e->node); + kfree(e); + } + + return 0; +} + + +/****************************** Some noise ******************************/ + + +static struct usb_composite_driver hidg_driver = { + .name = "g_hid", + .dev = &device_desc, + .strings = dev_strings, + .bind = hid_bind, + .unbind = __exit_p(hid_unbind), +}; + +static struct platform_driver hidg_plat_driver = { + .remove = __devexit_p(hidg_plat_driver_remove), + .driver = { + .owner = THIS_MODULE, + .name = "hidg", + }, +}; + + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Fabien Chouteau, Peter Korsgaard"); +MODULE_LICENSE("GPL"); + +static int __init hidg_init(void) +{ + platform_driver_probe(&hidg_plat_driver, hidg_plat_driver_probe); + return usb_composite_register(&hidg_driver); +} +module_init(hidg_init); + +static void __exit hidg_cleanup(void) +{ + platform_driver_unregister(&hidg_plat_driver); + usb_composite_unregister(&hidg_driver); +} +module_exit(hidg_cleanup); diff --git a/include/linux/usb/g_hid.h b/include/linux/usb/g_hid.h new file mode 100644 index 000000000000..50f5745df28c --- /dev/null +++ b/include/linux/usb/g_hid.h @@ -0,0 +1,32 @@ +/* + * g_hid.h -- Header file for USB HID gadget driver + * + * Copyright (C) 2010 Fabien Chouteau + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_USB_G_HID_H +#define __LINUX_USB_G_HID_H + +struct hidg_func_descriptor { + unsigned char subclass; + unsigned char protocol; + unsigned short report_length; + unsigned short report_desc_length; + unsigned char report_desc[]; +}; + +#endif /* __LINUX_USB_G_HID_H */ -- cgit v1.2.3-58-ga151 From e618834ef9608750a36d03d4aa9a9f931aa788d6 Mon Sep 17 00:00:00 2001 From: James Maki Date: Sun, 21 Mar 2010 12:53:59 -0500 Subject: USB: option.c: option_indat_callback: Resubmit some unsuccessful URBs All unsuccessful (non-zero status) URBs were being dropped. After N_IN_URBs are dropped you will no longer be able to receive data. This patch resubmits unsuccessful URBs unless the status indicates that it should be terminated. The statuses that indicate the URB should be terminated was gathered from other similar drivers. Signed-off-by: James Maki Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 49 +++++++++++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 84d0edad8e4f..6d0dfd7da98c 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1019,31 +1019,42 @@ static void option_indat_callback(struct urb *urb) dbg("%s: %p", __func__, urb); endpoint = usb_pipeendpoint(urb->pipe); - port = urb->context; - - if (status) { + port = urb->context; + + switch (status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s: urb shutting down with status: %d on endpoint %02x.", + __func__, status, endpoint); + return; + default: dbg("%s: nonzero status: %d on endpoint %02x.", __func__, status, endpoint); - } else { + goto exit; + } + + if (urb->actual_length) { tty = tty_port_tty_get(&port->port); - if (urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - } else - dbg("%s: empty read urb received", __func__); + tty_insert_flip_string(tty, data, urb->actual_length); + tty_flip_buffer_push(tty); tty_kref_put(tty); + } else + dbg("%s: empty read urb received", __func__); - /* Resubmit urb so we continue receiving */ - if (status != -ESHUTDOWN) { - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err && err != -EPERM) - printk(KERN_ERR "%s: resubmit read urb failed. " - "(%d)", __func__, err); - else - usb_mark_last_busy(port->serial->dev); - } +exit: + /* Resubmit urb so we continue receiving */ + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err && err != -EPERM) + printk(KERN_ERR "%s: resubmit read urb failed. " + "(%d)", __func__, err); + else + usb_mark_last_busy(port->serial->dev); - } return; } -- cgit v1.2.3-58-ga151 From b0f9da7e02776a8c5ad61b9e24feebf7b12a7243 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 25 Mar 2010 13:25:18 +0200 Subject: usb: musb: debugfs: musb_exit_debugfs() can be called on probe when we fail to probe(), we can call musb_exit_debugfs(). Allow that by removing section annotations. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 7 +++++-- drivers/usb/musb/musb_debugfs.c | 2 +- 2 files changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 3466cd53e9c8..27aaaa023a1e 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2056,12 +2056,12 @@ bad_config: status = musb_init_debugfs(musb); if (status < 0) - goto fail2; + goto fail4; #ifdef CONFIG_SYSFS status = sysfs_create_group(&musb->controller->kobj, &musb_attr_group); if (status) - goto fail4; + goto fail5; #endif dev_info(dev, "USB %s mode controller at %p using %s, IRQ %d\n", @@ -2078,6 +2078,9 @@ bad_config: return 0; +fail5: + musb_exit_debugfs(musb); + fail4: if (!is_otg_enabled(musb) && is_host_enabled(musb)) usb_remove_hcd(musb_to_hcd(musb)); diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c index b6a27bab223a..7768634a7576 100644 --- a/drivers/usb/musb/musb_debugfs.c +++ b/drivers/usb/musb/musb_debugfs.c @@ -289,7 +289,7 @@ err0: return ret; } -void __exit musb_exit_debugfs(struct musb *musb) +void /* __init_or_exit */ musb_exit_debugfs(struct musb *musb) { debugfs_remove_recursive(musb_debugfs_root); } -- cgit v1.2.3-58-ga151 From ff927addd62d33ab95cd83208e7db3ff37fdac18 Mon Sep 17 00:00:00 2001 From: Cliff Cai Date: Thu, 25 Mar 2010 13:25:19 +0200 Subject: USB: musb: support host/gadget role switching on Blackfin parts Signed-off-by: Cliff Cai Signed-off-by: Mike Frysinger Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 69 +++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 63 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index eb4392f904e4..8052e7659ac8 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -170,6 +170,13 @@ static irqreturn_t blackfin_interrupt(int irq, void *__hci) retval = musb_interrupt(musb); } + /* Start sampling ID pin, when plug is removed from MUSB */ + if (is_otg_enabled(musb) && (musb->xceiv->state == OTG_STATE_B_IDLE + || musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { + mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY); + musb->a_wait_bcon = TIMER_DELAY; + } + spin_unlock_irqrestore(&musb->lock, flags); return retval; @@ -180,6 +187,7 @@ static void musb_conn_timer_handler(unsigned long _musb) struct musb *musb = (void *)_musb; unsigned long flags; u16 val; + static u8 toggle; spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->state) { @@ -187,10 +195,44 @@ static void musb_conn_timer_handler(unsigned long _musb) case OTG_STATE_A_WAIT_BCON: /* Start a new session */ val = musb_readw(musb->mregs, MUSB_DEVCTL); + val &= ~MUSB_DEVCTL_SESSION; + musb_writew(musb->mregs, MUSB_DEVCTL, val); val |= MUSB_DEVCTL_SESSION; musb_writew(musb->mregs, MUSB_DEVCTL, val); + /* Check if musb is host or peripheral. */ + val = musb_readw(musb->mregs, MUSB_DEVCTL); + + if (!(val & MUSB_DEVCTL_BDEVICE)) { + gpio_set_value(musb->config->gpio_vrsel, 1); + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; + } else { + gpio_set_value(musb->config->gpio_vrsel, 0); + /* Ignore VBUSERROR and SUSPEND IRQ */ + val = musb_readb(musb->mregs, MUSB_INTRUSBE); + val &= ~MUSB_INTR_VBUSERROR; + musb_writeb(musb->mregs, MUSB_INTRUSBE, val); + val = MUSB_INTR_SUSPEND | MUSB_INTR_VBUSERROR; + musb_writeb(musb->mregs, MUSB_INTRUSB, val); + if (is_otg_enabled(musb)) + musb->xceiv->state = OTG_STATE_B_IDLE; + else + musb_writeb(musb->mregs, MUSB_POWER, MUSB_POWER_HSENAB); + } + mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY); + break; + case OTG_STATE_B_IDLE: + + if (!is_peripheral_enabled(musb)) + break; + /* Start a new session. It seems that MUSB needs taking + * some time to recognize the type of the plug inserted? + */ val = musb_readw(musb->mregs, MUSB_DEVCTL); + val |= MUSB_DEVCTL_SESSION; + musb_writew(musb->mregs, MUSB_DEVCTL, val); + val = musb_readw(musb->mregs, MUSB_DEVCTL); + if (!(val & MUSB_DEVCTL_BDEVICE)) { gpio_set_value(musb->config->gpio_vrsel, 1); musb->xceiv->state = OTG_STATE_A_WAIT_BCON; @@ -205,12 +247,27 @@ static void musb_conn_timer_handler(unsigned long _musb) val = MUSB_INTR_SUSPEND | MUSB_INTR_VBUSERROR; musb_writeb(musb->mregs, MUSB_INTRUSB, val); - val = MUSB_POWER_HSENAB; - musb_writeb(musb->mregs, MUSB_POWER, val); + /* Toggle the Soft Conn bit, so that we can response to + * the inserting of either A-plug or B-plug. + */ + if (toggle) { + val = musb_readb(musb->mregs, MUSB_POWER); + val &= ~MUSB_POWER_SOFTCONN; + musb_writeb(musb->mregs, MUSB_POWER, val); + toggle = 0; + } else { + val = musb_readb(musb->mregs, MUSB_POWER); + val |= MUSB_POWER_SOFTCONN; + musb_writeb(musb->mregs, MUSB_POWER, val); + toggle = 1; + } + /* The delay time is set to 1/4 second by default, + * shortening it, if accelerating A-plug detection + * is needed in OTG mode. + */ + mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY / 4); } - mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY); break; - default: DBG(1, "%s state not handled\n", otg_state_string(musb)); break; @@ -222,7 +279,7 @@ static void musb_conn_timer_handler(unsigned long _musb) void musb_platform_enable(struct musb *musb) { - if (is_host_enabled(musb)) { + if (!is_otg_enabled(musb) && is_host_enabled(musb)) { mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY); musb->a_wait_bcon = TIMER_DELAY; } @@ -256,7 +313,7 @@ static int bfin_set_power(struct otg_transceiver *x, unsigned mA) void musb_platform_try_idle(struct musb *musb, unsigned long timeout) { - if (is_host_enabled(musb)) + if (!is_otg_enabled(musb) && is_host_enabled(musb)) mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY); } -- cgit v1.2.3-58-ga151 From ca0d44525060cf852b87c35f64d786b8a2a75c3d Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 25 Mar 2010 13:25:20 +0200 Subject: MUSB: OMAP: remove omap_vbus_power() This function does nothing... Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/omap2430.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 0e5d0670506b..c2413c76126d 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -145,10 +145,6 @@ void musb_platform_enable(struct musb *musb) void musb_platform_disable(struct musb *musb) { } -static void omap_vbus_power(struct musb *musb, int is_on, int sleeping) -{ -} - static void omap_set_vbus(struct musb *musb, int is_on) { u8 devctl; @@ -255,8 +251,6 @@ int __init musb_platform_init(struct musb *musb, void *board_data) musb_readl(musb->mregs, OTG_INTERFSEL), musb_readl(musb->mregs, OTG_SIMENABLE)); - omap_vbus_power(musb, musb->board_mode == MUSB_HOST, 1); - if (is_host_enabled(musb)) musb->board_set_vbus = omap_set_vbus; @@ -336,8 +330,6 @@ static int musb_platform_resume(struct musb *musb) int musb_platform_exit(struct musb *musb) { - omap_vbus_power(musb, 0 /*off*/, 1); - musb_platform_suspend(musb); return 0; -- cgit v1.2.3-58-ga151 From 69b2cd7200a32956581cab24b2a4ecf8353cd6f8 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 25 Mar 2010 13:25:21 +0200 Subject: MUSB: Blackfin: remove bfin_vbus_power() This function does nothing... Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 8052e7659ac8..903b465c4c68 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -289,10 +289,6 @@ void musb_platform_disable(struct musb *musb) { } -static void bfin_vbus_power(struct musb *musb, int is_on, int sleeping) -{ -} - static void bfin_set_vbus(struct musb *musb, int is_on) { int value = musb->config->gpio_vrsel_active; @@ -410,7 +406,6 @@ int musb_platform_resume(struct musb *musb) int musb_platform_exit(struct musb *musb) { - bfin_vbus_power(musb, 0 /*off*/, 1); gpio_free(musb->config->gpio_vrsel); musb_platform_suspend(musb); -- cgit v1.2.3-58-ga151 From 5b3078b2d789f4bd49006a3633dc106e56c47e28 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 25 Mar 2010 13:25:22 +0200 Subject: MUSB: OMAP: make musb_platform_suspend() 'static' This function is only called inside omap2430.c... Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/omap2430.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index c2413c76126d..d05eef2baaaf 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -275,7 +275,7 @@ void musb_platform_restore_context(struct musb *musb, } #endif -int musb_platform_suspend(struct musb *musb) +static int musb_platform_suspend(struct musb *musb) { u32 l; -- cgit v1.2.3-58-ga151 From d55d221a93c62a769f2bcf9cd5853425addb5c9f Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 25 Mar 2010 13:25:23 +0200 Subject: MUSB: Blackfin: remove musb_platform_{suspend|resume}() These functions do nothing and also are both unnecessarily 'extern'; actually, musb_platform_resume() in not even called... Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 903b465c4c68..b611420a8050 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -392,22 +392,10 @@ int __init musb_platform_init(struct musb *musb, void *board_data) return 0; } -int musb_platform_suspend(struct musb *musb) -{ - return 0; -} - -int musb_platform_resume(struct musb *musb) -{ - return 0; -} - - int musb_platform_exit(struct musb *musb) { gpio_free(musb->config->gpio_vrsel); - musb_platform_suspend(musb); return 0; } -- cgit v1.2.3-58-ga151 From 00ce8eca856bc1e0b943427d2cf76122ae3b1255 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Thu, 25 Mar 2010 13:25:24 +0200 Subject: usb: musb: omap2430: remove unused define get_cpu_rev() is unused in this driver. It is probably legacy code. So remove it. Signed-off-by: Anand Gadiyar Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/omap2430.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index d05eef2baaaf..def37ebe2ff4 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -39,10 +39,6 @@ #include "musb_core.h" #include "omap2430.h" -#ifdef CONFIG_ARCH_OMAP3430 -#define get_cpu_rev() 2 -#endif - static struct timer_list musb_idle_timer; -- cgit v1.2.3-58-ga151 From 82e2af47fe7a494fafb3f6ed39a7856c1307411b Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Thu, 25 Mar 2010 13:25:25 +0200 Subject: usb: musb: omap2430.c: remove unnecessary includes We don't need mach-types and hardware.h Signed-off-by: Anand Gadiyar Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/omap2430.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index def37ebe2ff4..e06d65e36bf7 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -32,8 +32,6 @@ #include #include -#include -#include #include #include "musb_core.h" -- cgit v1.2.3-58-ga151 From d7086ddb4d3c2f8007ed5e0bb1f30a06c1bb3480 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 25 Mar 2010 13:25:26 +0200 Subject: usb: musb: Makefile: remove unexistent config option Remove the unexistent CONFIG_USB_INVENTRA_MUSB_HAS_AHB_ID option from our Makefile. Problem reported by Sergei Shtylyov Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/Makefile | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index a1677f9955aa..9705f716386e 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -72,12 +72,6 @@ endif ################################################################################ -# FIXME remove all these extra "-DMUSB_* things, stick to CONFIG_* - -ifeq ($(CONFIG_USB_INVENTRA_MUSB_HAS_AHB_ID),y) - EXTRA_CFLAGS += -DMUSB_AHB_ID -endif - # Debugging ifeq ($(CONFIG_USB_MUSB_DEBUG),y) -- cgit v1.2.3-58-ga151 From ffb865b1e4608cf76867f132b9e8df359fdffc91 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Thu, 25 Mar 2010 13:25:28 +0200 Subject: usb: musb: add ulpi access operations This adds helper functions for ULPI access, and implements otg_io_access_ops for musb. Signed-off-by: Heikki Krogerus Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 86 ++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/musb/musb_regs.h | 10 ++++++ 2 files changed, 96 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 27aaaa023a1e..fad70bc83555 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -149,6 +149,87 @@ static inline struct musb *dev_to_musb(struct device *dev) /*-------------------------------------------------------------------------*/ +#ifndef CONFIG_BLACKFIN +static int musb_ulpi_read(struct otg_transceiver *otg, u32 offset) +{ + void __iomem *addr = otg->io_priv; + int i = 0; + u8 r; + u8 power; + + /* Make sure the transceiver is not in low power mode */ + power = musb_readb(addr, MUSB_POWER); + power &= ~MUSB_POWER_SUSPENDM; + musb_writeb(addr, MUSB_POWER, power); + + /* REVISIT: musbhdrc_ulpi_an.pdf recommends setting the + * ULPICarKitControlDisableUTMI after clearing POWER_SUSPENDM. + */ + + musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)offset); + musb_writeb(addr, MUSB_ULPI_REG_CONTROL, + MUSB_ULPI_REG_REQ | MUSB_ULPI_RDN_WR); + + while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL) + & MUSB_ULPI_REG_CMPLT)) { + i++; + if (i == 10000) { + DBG(3, "ULPI read timed out\n"); + return -ETIMEDOUT; + } + + } + r = musb_readb(addr, MUSB_ULPI_REG_CONTROL); + r &= ~MUSB_ULPI_REG_CMPLT; + musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r); + + return musb_readb(addr, MUSB_ULPI_REG_DATA); +} + +static int musb_ulpi_write(struct otg_transceiver *otg, + u32 offset, u32 data) +{ + void __iomem *addr = otg->io_priv; + int i = 0; + u8 r = 0; + u8 power; + + /* Make sure the transceiver is not in low power mode */ + power = musb_readb(addr, MUSB_POWER); + power &= ~MUSB_POWER_SUSPENDM; + musb_writeb(addr, MUSB_POWER, power); + + musb_writeb(addr, MUSB_ULPI_REG_ADDR, (u8)offset); + musb_writeb(addr, MUSB_ULPI_REG_DATA, (u8)data); + musb_writeb(addr, MUSB_ULPI_REG_CONTROL, MUSB_ULPI_REG_REQ); + + while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL) + & MUSB_ULPI_REG_CMPLT)) { + i++; + if (i == 10000) { + DBG(3, "ULPI write timed out\n"); + return -ETIMEDOUT; + } + } + + r = musb_readb(addr, MUSB_ULPI_REG_CONTROL); + r &= ~MUSB_ULPI_REG_CMPLT; + musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r); + + return 0; +} +#else +#define musb_ulpi_read(a, b) NULL +#define musb_ulpi_write(a, b, c) NULL +#endif + +static struct otg_io_access_ops musb_ulpi_access = { + .read = musb_ulpi_read, + .write = musb_ulpi_write, +}; + +/*-------------------------------------------------------------------------*/ + #if !defined(CONFIG_USB_TUSB6010) && !defined(CONFIG_BLACKFIN) /* @@ -1954,6 +2035,11 @@ bad_config: goto fail3; } + if (!musb->xceiv->io_ops) { + musb->xceiv->io_priv = musb->mregs; + musb->xceiv->io_ops = &musb_ulpi_access; + } + #ifndef CONFIG_MUSB_PIO_ONLY if (use_dma && dev->dma_mask) { struct dma_controller *c; diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h index fa55aacc385d..244267527a60 100644 --- a/drivers/usb/musb/musb_regs.h +++ b/drivers/usb/musb/musb_regs.h @@ -75,6 +75,10 @@ /* MUSB ULPI VBUSCONTROL */ #define MUSB_ULPI_USE_EXTVBUS 0x01 #define MUSB_ULPI_USE_EXTVBUSIND 0x02 +/* ULPI_REG_CONTROL */ +#define MUSB_ULPI_REG_REQ (1 << 0) +#define MUSB_ULPI_REG_CMPLT (1 << 1) +#define MUSB_ULPI_RDN_WR (1 << 2) /* TESTMODE */ #define MUSB_TEST_FORCE_HOST 0x80 @@ -251,6 +255,12 @@ /* REVISIT: vctrl/vstatus: optional vendor utmi+phy register at 0x68 */ #define MUSB_HWVERS 0x6C /* 8 bit */ #define MUSB_ULPI_BUSCONTROL 0x70 /* 8 bit */ +#define MUSB_ULPI_INT_MASK 0x72 /* 8 bit */ +#define MUSB_ULPI_INT_SRC 0x73 /* 8 bit */ +#define MUSB_ULPI_REG_DATA 0x74 /* 8 bit */ +#define MUSB_ULPI_REG_ADDR 0x75 /* 8 bit */ +#define MUSB_ULPI_REG_CONTROL 0x76 /* 8 bit */ +#define MUSB_ULPI_RAW_DATA 0x77 /* 8 bit */ #define MUSB_EPINFO 0x78 /* 8 bit */ #define MUSB_RAMINFO 0x79 /* 8 bit */ -- cgit v1.2.3-58-ga151 From dd0543ecc638947d67bdd3a8a41b95ed3c7b885e Mon Sep 17 00:00:00 2001 From: Robert Lukassen Date: Tue, 30 Mar 2010 14:14:01 +0200 Subject: usb: gadget: Allow larger configuration descriptors The composite framework allows gadgets with more than one function. This can lead to situations where the configuration descriptor is larger than the maximum of 512 bytes currently allowed by the composite framework. This patch proposes to double that limit to 1024. Signed-off-by: Robert Lukassen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 09289bb1e20f..5465d8767f9a 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -36,7 +36,7 @@ */ /* big enough to hold our biggest descriptor */ -#define USB_BUFSIZ 512 +#define USB_BUFSIZ 1024 static struct usb_composite_driver *composite; -- cgit v1.2.3-58-ga151 From 0fb2c2a1692b8f77be25d38f8802b0142cb6e6bc Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Mon, 29 Mar 2010 14:01:32 +0200 Subject: USB: gadget: f_mass_storage: per function Mass Storage Function (MSF) used the same descriptors for each usb_function instance (meaning usb_function::descriptors of different functions pointed to the same static area (the same was true for usb_function::hs_descriptors)). This would leads to problems if MSF were used in several USB configurations with different interface and/or endpoint numbers. Descriptors for all configurations would have interface/endpoint numbers overwritten by the values valid for the last configuration. This patch adds code that copies the descriptors each time MSF is added to USB configuration (that is for each usb_function). Signed-off-by: Michal Nazarewicz Cc: Kyungmin Park --- drivers/usb/gadget/f_mass_storage.c | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 218f51db9721..9dbe86dec332 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2919,6 +2919,8 @@ static void fsg_unbind(struct usb_configuration *c, struct usb_function *f) DBG(fsg, "unbind\n"); fsg_common_put(fsg->common); + usb_free_descriptors(fsg->function.descriptors); + usb_free_descriptors(fsg->function.hs_descriptors); kfree(fsg); } @@ -2959,7 +2961,9 @@ static int __init fsg_bind(struct usb_configuration *c, struct usb_function *f) fsg_fs_bulk_in_desc.bEndpointAddress; fsg_hs_bulk_out_desc.bEndpointAddress = fsg_fs_bulk_out_desc.bEndpointAddress; - f->hs_descriptors = fsg_hs_function; + f->hs_descriptors = usb_copy_descriptors(fsg_hs_function); + if (unlikely(!f->hs_descriptors)) + return -ENOMEM; } return 0; @@ -2991,7 +2995,11 @@ static int fsg_add(struct usb_composite_dev *cdev, fsg->function.name = FSG_DRIVER_DESC; fsg->function.strings = fsg_strings_array; - fsg->function.descriptors = fsg_fs_function; + fsg->function.descriptors = usb_copy_descriptors(fsg_fs_function); + if (unlikely(!fsg->function.descriptors)) { + rc = -ENOMEM; + goto error_free_fsg; + } fsg->function.bind = fsg_bind; fsg->function.unbind = fsg_unbind; fsg->function.setup = fsg_setup; @@ -3006,11 +3014,19 @@ static int fsg_add(struct usb_composite_dev *cdev, * call to usb_add_function() was successful. */ rc = usb_add_function(c, &fsg->function); + if (unlikely(rc)) + goto error_free_all; - if (likely(rc == 0)) - fsg_common_get(fsg->common); - else - kfree(fsg); + fsg_common_get(fsg->common); + return 0; + +error_free_all: + usb_free_descriptors(fsg->function.descriptors); + /* fsg_bind() might have copied those; or maybe not? who cares + * -- free it just in case. */ + usb_free_descriptors(fsg->function.hs_descriptors); +error_free_fsg: + kfree(fsg); return rc; } -- cgit v1.2.3-58-ga151 From fc567f06def35427ba830649eb6acbb72ac2790c Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Mon, 3 May 2010 09:13:02 +0300 Subject: USB: otg: ulpi: use the global ULPI register definitions Rely on the global ULPI register definitions Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/otg/ulpi.c | 50 ++++++++++++++------------------------------------ 1 file changed, 14 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c index 9010225e0d06..b1b346932946 100644 --- a/drivers/usb/otg/ulpi.c +++ b/drivers/usb/otg/ulpi.c @@ -29,28 +29,6 @@ #include #include -/* ULPI register addresses */ -#define ULPI_VID_LOW 0x00 /* Vendor ID low */ -#define ULPI_VID_HIGH 0x01 /* Vendor ID high */ -#define ULPI_PID_LOW 0x02 /* Product ID low */ -#define ULPI_PID_HIGH 0x03 /* Product ID high */ -#define ULPI_ITFCTL 0x07 /* Interface Control */ -#define ULPI_OTGCTL 0x0A /* OTG Control */ - -/* add to above register address to access Set/Clear functions */ -#define ULPI_REG_SET 0x01 -#define ULPI_REG_CLEAR 0x02 - -/* ULPI OTG Control Register bits */ -#define ID_PULL_UP (1 << 0) /* enable ID Pull Up */ -#define DP_PULL_DOWN (1 << 1) /* enable DP Pull Down */ -#define DM_PULL_DOWN (1 << 2) /* enable DM Pull Down */ -#define DISCHRG_VBUS (1 << 3) /* Discharge Vbus */ -#define CHRG_VBUS (1 << 4) /* Charge Vbus */ -#define DRV_VBUS (1 << 5) /* Drive Vbus */ -#define DRV_VBUS_EXT (1 << 6) /* Drive Vbus external */ -#define USE_EXT_VBUS_IND (1 << 7) /* Use ext. Vbus indicator */ - #define ULPI_ID(vendor, product) (((vendor) << 16) | (product)) #define TR_FLAG(flags, a, b) (((flags) & a) ? b : 0) @@ -65,28 +43,28 @@ static int ulpi_set_flags(struct otg_transceiver *otg) unsigned int flags = 0; if (otg->flags & USB_OTG_PULLUP_ID) - flags |= ID_PULL_UP; + flags |= ULPI_OTG_CTRL_ID_PULLUP; if (otg->flags & USB_OTG_PULLDOWN_DM) - flags |= DM_PULL_DOWN; + flags |= ULPI_OTG_CTRL_DM_PULLDOWN; if (otg->flags & USB_OTG_PULLDOWN_DP) - flags |= DP_PULL_DOWN; + flags |= ULPI_OTG_CTRL_DP_PULLDOWN; if (otg->flags & USB_OTG_EXT_VBUS_INDICATOR) - flags |= USE_EXT_VBUS_IND; + flags |= ULPI_OTG_CTRL_EXTVBUSIND; - return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); + return otg_io_write(otg, flags, ULPI_SET(ULPI_OTG_CTRL)); } static int ulpi_init(struct otg_transceiver *otg) { int i, vid, pid; - vid = (otg_io_read(otg, ULPI_VID_HIGH) << 8) | - otg_io_read(otg, ULPI_VID_LOW); - pid = (otg_io_read(otg, ULPI_PID_HIGH) << 8) | - otg_io_read(otg, ULPI_PID_LOW); + vid = (otg_io_read(otg, ULPI_VENDOR_ID_HIGH) << 8) | + otg_io_read(otg, ULPI_VENDOR_ID_LOW); + pid = (otg_io_read(otg, ULPI_PRODUCT_ID_HIGH) << 8) | + otg_io_read(otg, ULPI_PRODUCT_ID_LOW); pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid); @@ -100,19 +78,19 @@ static int ulpi_init(struct otg_transceiver *otg) static int ulpi_set_vbus(struct otg_transceiver *otg, bool on) { - unsigned int flags = otg_io_read(otg, ULPI_OTGCTL); + unsigned int flags = otg_io_read(otg, ULPI_OTG_CTRL); - flags &= ~(DRV_VBUS | DRV_VBUS_EXT); + flags &= ~(ULPI_OTG_CTRL_DRVVBUS | ULPI_OTG_CTRL_DRVVBUS_EXT); if (on) { if (otg->flags & USB_OTG_DRV_VBUS) - flags |= DRV_VBUS; + flags |= ULPI_OTG_CTRL_DRVVBUS; if (otg->flags & USB_OTG_DRV_VBUS_EXT) - flags |= DRV_VBUS_EXT; + flags |= ULPI_OTG_CTRL_DRVVBUS_EXT; } - return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); + return otg_io_write(otg, flags, ULPI_SET(ULPI_OTG_CTRL)); } struct otg_transceiver * -- cgit v1.2.3-58-ga151 From 92a6e6b3280776b1341cd61b1d137ec34ab3f30b Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 31 Mar 2010 10:18:05 +0300 Subject: usb: otg: twl4030: use the global ULPI register definitions Rely on the global ULPI register definitions Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/otg/twl4030-usb.c | 108 ++++-------------------------------------- 1 file changed, 8 insertions(+), 100 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 223cdf46ccb7..0e8888588d4e 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -41,81 +42,7 @@ /* Register defines */ -#define VENDOR_ID_LO 0x00 -#define VENDOR_ID_HI 0x01 -#define PRODUCT_ID_LO 0x02 -#define PRODUCT_ID_HI 0x03 - -#define FUNC_CTRL 0x04 -#define FUNC_CTRL_SET 0x05 -#define FUNC_CTRL_CLR 0x06 -#define FUNC_CTRL_SUSPENDM (1 << 6) -#define FUNC_CTRL_RESET (1 << 5) -#define FUNC_CTRL_OPMODE_MASK (3 << 3) /* bits 3 and 4 */ -#define FUNC_CTRL_OPMODE_NORMAL (0 << 3) -#define FUNC_CTRL_OPMODE_NONDRIVING (1 << 3) -#define FUNC_CTRL_OPMODE_DISABLE_BIT_NRZI (2 << 3) -#define FUNC_CTRL_TERMSELECT (1 << 2) -#define FUNC_CTRL_XCVRSELECT_MASK (3 << 0) /* bits 0 and 1 */ -#define FUNC_CTRL_XCVRSELECT_HS (0 << 0) -#define FUNC_CTRL_XCVRSELECT_FS (1 << 0) -#define FUNC_CTRL_XCVRSELECT_LS (2 << 0) -#define FUNC_CTRL_XCVRSELECT_FS4LS (3 << 0) - -#define IFC_CTRL 0x07 -#define IFC_CTRL_SET 0x08 -#define IFC_CTRL_CLR 0x09 -#define IFC_CTRL_INTERFACE_PROTECT_DISABLE (1 << 7) -#define IFC_CTRL_AUTORESUME (1 << 4) -#define IFC_CTRL_CLOCKSUSPENDM (1 << 3) -#define IFC_CTRL_CARKITMODE (1 << 2) -#define IFC_CTRL_FSLSSERIALMODE_3PIN (1 << 1) - -#define TWL4030_OTG_CTRL 0x0A -#define TWL4030_OTG_CTRL_SET 0x0B -#define TWL4030_OTG_CTRL_CLR 0x0C -#define TWL4030_OTG_CTRL_DRVVBUS (1 << 5) -#define TWL4030_OTG_CTRL_CHRGVBUS (1 << 4) -#define TWL4030_OTG_CTRL_DISCHRGVBUS (1 << 3) -#define TWL4030_OTG_CTRL_DMPULLDOWN (1 << 2) -#define TWL4030_OTG_CTRL_DPPULLDOWN (1 << 1) -#define TWL4030_OTG_CTRL_IDPULLUP (1 << 0) - -#define USB_INT_EN_RISE 0x0D -#define USB_INT_EN_RISE_SET 0x0E -#define USB_INT_EN_RISE_CLR 0x0F -#define USB_INT_EN_FALL 0x10 -#define USB_INT_EN_FALL_SET 0x11 -#define USB_INT_EN_FALL_CLR 0x12 -#define USB_INT_STS 0x13 -#define USB_INT_LATCH 0x14 -#define USB_INT_IDGND (1 << 4) -#define USB_INT_SESSEND (1 << 3) -#define USB_INT_SESSVALID (1 << 2) -#define USB_INT_VBUSVALID (1 << 1) -#define USB_INT_HOSTDISCONNECT (1 << 0) - -#define CARKIT_CTRL 0x19 -#define CARKIT_CTRL_SET 0x1A -#define CARKIT_CTRL_CLR 0x1B -#define CARKIT_CTRL_MICEN (1 << 6) -#define CARKIT_CTRL_SPKRIGHTEN (1 << 5) -#define CARKIT_CTRL_SPKLEFTEN (1 << 4) -#define CARKIT_CTRL_RXDEN (1 << 3) -#define CARKIT_CTRL_TXDEN (1 << 2) -#define CARKIT_CTRL_IDGNDDRV (1 << 1) -#define CARKIT_CTRL_CARKITPWR (1 << 0) -#define CARKIT_PLS_CTRL 0x22 -#define CARKIT_PLS_CTRL_SET 0x23 -#define CARKIT_PLS_CTRL_CLR 0x24 -#define CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN (1 << 3) -#define CARKIT_PLS_CTRL_SPKRLEFT_BIASEN (1 << 2) -#define CARKIT_PLS_CTRL_RXPLSEN (1 << 1) -#define CARKIT_PLS_CTRL_TXPLSEN (1 << 0) - #define MCPC_CTRL 0x30 -#define MCPC_CTRL_SET 0x31 -#define MCPC_CTRL_CLR 0x32 #define MCPC_CTRL_RTSOL (1 << 7) #define MCPC_CTRL_EXTSWR (1 << 6) #define MCPC_CTRL_EXTSWC (1 << 5) @@ -125,8 +52,6 @@ #define MCPC_CTRL_HS_UART (1 << 0) #define MCPC_IO_CTRL 0x33 -#define MCPC_IO_CTRL_SET 0x34 -#define MCPC_IO_CTRL_CLR 0x35 #define MCPC_IO_CTRL_MICBIASEN (1 << 5) #define MCPC_IO_CTRL_CTS_NPU (1 << 4) #define MCPC_IO_CTRL_RXD_PU (1 << 3) @@ -135,19 +60,13 @@ #define MCPC_IO_CTRL_RTSTYP (1 << 0) #define MCPC_CTRL2 0x36 -#define MCPC_CTRL2_SET 0x37 -#define MCPC_CTRL2_CLR 0x38 #define MCPC_CTRL2_MCPC_CK_EN (1 << 0) #define OTHER_FUNC_CTRL 0x80 -#define OTHER_FUNC_CTRL_SET 0x81 -#define OTHER_FUNC_CTRL_CLR 0x82 #define OTHER_FUNC_CTRL_BDIS_ACON_EN (1 << 4) #define OTHER_FUNC_CTRL_FIVEWIRE_MODE (1 << 2) #define OTHER_IFC_CTRL 0x83 -#define OTHER_IFC_CTRL_SET 0x84 -#define OTHER_IFC_CTRL_CLR 0x85 #define OTHER_IFC_CTRL_OE_INT_EN (1 << 6) #define OTHER_IFC_CTRL_CEA2011_MODE (1 << 5) #define OTHER_IFC_CTRL_FSLSSERIALMODE_4PIN (1 << 4) @@ -156,11 +75,7 @@ #define OTHER_IFC_CTRL_ALT_INT_REROUTE (1 << 0) #define OTHER_INT_EN_RISE 0x86 -#define OTHER_INT_EN_RISE_SET 0x87 -#define OTHER_INT_EN_RISE_CLR 0x88 #define OTHER_INT_EN_FALL 0x89 -#define OTHER_INT_EN_FALL_SET 0x8A -#define OTHER_INT_EN_FALL_CLR 0x8B #define OTHER_INT_STS 0x8C #define OTHER_INT_LATCH 0x8D #define OTHER_INT_VB_SESS_VLD (1 << 7) @@ -178,13 +93,9 @@ #define ID_RES_GND (1 << 0) #define POWER_CTRL 0xAC -#define POWER_CTRL_SET 0xAD -#define POWER_CTRL_CLR 0xAE #define POWER_CTRL_OTG_ENAB (1 << 5) #define OTHER_IFC_CTRL2 0xAF -#define OTHER_IFC_CTRL2_SET 0xB0 -#define OTHER_IFC_CTRL2_CLR 0xB1 #define OTHER_IFC_CTRL2_ULPI_STP_LOW (1 << 4) #define OTHER_IFC_CTRL2_ULPI_TXEN_POL (1 << 3) #define OTHER_IFC_CTRL2_ULPI_4PIN_2430 (1 << 2) @@ -193,14 +104,10 @@ #define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT2N (1 << 0) #define REG_CTRL_EN 0xB2 -#define REG_CTRL_EN_SET 0xB3 -#define REG_CTRL_EN_CLR 0xB4 #define REG_CTRL_ERROR 0xB5 #define ULPI_I2C_CONFLICT_INTEN (1 << 0) #define OTHER_FUNC_CTRL2 0xB8 -#define OTHER_FUNC_CTRL2_SET 0xB9 -#define OTHER_FUNC_CTRL2_CLR 0xBA #define OTHER_FUNC_CTRL2_VBAT_TIMER_EN (1 << 0) /* following registers do not have separate _clr and _set registers */ @@ -328,13 +235,13 @@ static inline int twl4030_usb_read(struct twl4030_usb *twl, u8 address) static inline int twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits) { - return twl4030_usb_write(twl, reg + 1, bits); + return twl4030_usb_write(twl, ULPI_SET(reg), bits); } static inline int twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits) { - return twl4030_usb_write(twl, reg + 2, bits); + return twl4030_usb_write(twl, ULPI_CLR(reg), bits); } /*-------------------------------------------------------------------------*/ @@ -393,11 +300,12 @@ static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode) switch (mode) { case T2_USB_MODE_ULPI: - twl4030_usb_clear_bits(twl, IFC_CTRL, IFC_CTRL_CARKITMODE); + twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL, + ULPI_IFC_CTRL_CARKITMODE); twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - twl4030_usb_clear_bits(twl, FUNC_CTRL, - FUNC_CTRL_XCVRSELECT_MASK | - FUNC_CTRL_OPMODE_MASK); + twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL, + ULPI_FUNC_CTRL_XCVRSEL_MASK | + ULPI_FUNC_CTRL_OPMODE_MASK); break; case -1: /* FIXME: power on defaults */ -- cgit v1.2.3-58-ga151 From 0ff8d1b3c858ea7c8daa54f7577971a76d04d283 Mon Sep 17 00:00:00 2001 From: Matt Reimer Date: Thu, 1 Apr 2010 13:44:04 -0700 Subject: USB: pxa27x_udc: use four bits to store endpoint addresses Endpoint addresses on pxa27x can be programmed as 1-15, but since only three bits were being used to store the endpoint number it was possible to overflow. Signed-off-by: Matt Reimer Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/pxa27x_udc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h index ff61e4866e8a..cd16231d8c73 100644 --- a/drivers/usb/gadget/pxa27x_udc.h +++ b/drivers/usb/gadget/pxa27x_udc.h @@ -360,7 +360,7 @@ struct pxa_ep { * Specific pxa endpoint data, needed for hardware initialization */ unsigned dir_in:1; - unsigned addr:3; + unsigned addr:4; unsigned config:2; unsigned interface:3; unsigned alternate:3; -- cgit v1.2.3-58-ga151 From ff9c895f07d36193c75533bda8193bde8ca99d02 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 2 Apr 2010 13:27:28 -0400 Subject: USB: fix usbmon and DMA mapping for scatter-gather URBs This patch (as1368) fixes a rather obscure bug in usbmon: When tracing URBs sent by the scatter-gather library, it accesses the data buffers while they are still mapped for DMA. The solution is to move the mapping and unmapping out of the s-g library and into the usual place in hcd.c. This requires the addition of new URB flag bits to describe the kind of mapping needed, since we have to call dma_map_sg() if the HCD supports native scatter-gather operation and dma_map_page() if it doesn't. The nice thing about having the new flags is that they simplify the testing for unmapping. The patch removes the only caller of usb_buffer_[un]map_sg(), so those functions are #if'ed out. A later patch will remove them entirely. As a result of this change, urb->sg will be set in situations where it wasn't set previously. Hence the xhci and whci drivers are adjusted to test urb->num_sgs instead, which retains its original meaning and is nonzero only when the HCD has to handle a scatterlist. Finally, even when a submission error occurs we don't want to hand URBs to usbmon before they are unmapped. The submission path is rearranged so that map_urb_for_dma() is called only for non-root-hub URBs and unmap_urb_for_dma() is called immediately after a submission error. This simplifies the error handling. Signed-off-by: Alan Stern CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 169 +++++++++++++++++++++++++++---------------- drivers/usb/core/message.c | 45 +++--------- drivers/usb/core/urb.c | 9 ++- drivers/usb/core/usb.c | 4 + drivers/usb/host/whci/qset.c | 2 +- drivers/usb/host/xhci-ring.c | 2 +- drivers/usb/mon/mon_bin.c | 2 +- drivers/usb/mon/mon_text.c | 4 +- include/linux/usb.h | 9 +++ 9 files changed, 138 insertions(+), 108 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 38d4700926f7..6a05e6934455 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1259,6 +1259,51 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle, *dma_handle = 0; } +static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +{ + enum dma_data_direction dir; + + if (urb->transfer_flags & URB_SETUP_MAP_SINGLE) + dma_unmap_single(hcd->self.controller, + urb->setup_dma, + sizeof(struct usb_ctrlrequest), + DMA_TO_DEVICE); + else if (urb->transfer_flags & URB_SETUP_MAP_LOCAL) + hcd_free_coherent(urb->dev->bus, + &urb->setup_dma, + (void **) &urb->setup_packet, + sizeof(struct usb_ctrlrequest), + DMA_TO_DEVICE); + + dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + if (urb->transfer_flags & URB_DMA_MAP_SG) + dma_unmap_sg(hcd->self.controller, + urb->sg->sg, + urb->num_sgs, + dir); + else if (urb->transfer_flags & URB_DMA_MAP_PAGE) + dma_unmap_page(hcd->self.controller, + urb->transfer_dma, + urb->transfer_buffer_length, + dir); + else if (urb->transfer_flags & URB_DMA_MAP_SINGLE) + dma_unmap_single(hcd->self.controller, + urb->transfer_dma, + urb->transfer_buffer_length, + dir); + else if (urb->transfer_flags & URB_MAP_LOCAL) + hcd_free_coherent(urb->dev->bus, + &urb->transfer_dma, + &urb->transfer_buffer, + urb->transfer_buffer_length, + dir); + + /* Make it safe to call this routine more than once */ + urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL | + URB_DMA_MAP_SG | URB_DMA_MAP_PAGE | + URB_DMA_MAP_SINGLE | URB_MAP_LOCAL); +} + static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { @@ -1270,8 +1315,6 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, * unless it uses pio or talks to another transport, * or uses the provided scatter gather list for bulk. */ - if (is_root_hub(urb->dev)) - return 0; if (usb_endpoint_xfer_control(&urb->ep->desc) && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) { @@ -1284,6 +1327,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, if (dma_mapping_error(hcd->self.controller, urb->setup_dma)) return -EAGAIN; + urb->transfer_flags |= URB_SETUP_MAP_SINGLE; } else if (hcd->driver->flags & HCD_LOCAL_MEM) ret = hcd_alloc_coherent( urb->dev->bus, mem_flags, @@ -1291,20 +1335,57 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, (void **)&urb->setup_packet, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); + if (ret) + return ret; + urb->transfer_flags |= URB_SETUP_MAP_LOCAL; } dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - if (ret == 0 && urb->transfer_buffer_length != 0 + if (urb->transfer_buffer_length != 0 && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { if (hcd->self.uses_dma) { - urb->transfer_dma = dma_map_single ( - hcd->self.controller, - urb->transfer_buffer, - urb->transfer_buffer_length, - dir); - if (dma_mapping_error(hcd->self.controller, + if (urb->num_sgs) { + int n = dma_map_sg( + hcd->self.controller, + urb->sg->sg, + urb->num_sgs, + dir); + if (n <= 0) + ret = -EAGAIN; + else + urb->transfer_flags |= URB_DMA_MAP_SG; + if (n != urb->num_sgs) { + urb->num_sgs = n; + urb->transfer_flags |= + URB_DMA_SG_COMBINED; + } + } else if (urb->sg) { + struct scatterlist *sg; + + sg = (struct scatterlist *) urb->sg; + urb->transfer_dma = dma_map_page( + hcd->self.controller, + sg_page(sg), + sg->offset, + urb->transfer_buffer_length, + dir); + if (dma_mapping_error(hcd->self.controller, urb->transfer_dma)) - return -EAGAIN; + ret = -EAGAIN; + else + urb->transfer_flags |= URB_DMA_MAP_PAGE; + } else { + urb->transfer_dma = dma_map_single( + hcd->self.controller, + urb->transfer_buffer, + urb->transfer_buffer_length, + dir); + if (dma_mapping_error(hcd->self.controller, + urb->transfer_dma)) + ret = -EAGAIN; + else + urb->transfer_flags |= URB_DMA_MAP_SINGLE; + } } else if (hcd->driver->flags & HCD_LOCAL_MEM) { ret = hcd_alloc_coherent( urb->dev->bus, mem_flags, @@ -1312,55 +1393,16 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, &urb->transfer_buffer, urb->transfer_buffer_length, dir); - - if (ret && usb_endpoint_xfer_control(&urb->ep->desc) - && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) - hcd_free_coherent(urb->dev->bus, - &urb->setup_dma, - (void **)&urb->setup_packet, - sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); + if (ret == 0) + urb->transfer_flags |= URB_MAP_LOCAL; } + if (ret && (urb->transfer_flags & (URB_SETUP_MAP_SINGLE | + URB_SETUP_MAP_LOCAL))) + unmap_urb_for_dma(hcd, urb); } return ret; } -static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) -{ - enum dma_data_direction dir; - - if (is_root_hub(urb->dev)) - return; - - if (usb_endpoint_xfer_control(&urb->ep->desc) - && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) { - if (hcd->self.uses_dma) - dma_unmap_single(hcd->self.controller, urb->setup_dma, - sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); - else if (hcd->driver->flags & HCD_LOCAL_MEM) - hcd_free_coherent(urb->dev->bus, &urb->setup_dma, - (void **)&urb->setup_packet, - sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); - } - - dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - if (urb->transfer_buffer_length != 0 - && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { - if (hcd->self.uses_dma) - dma_unmap_single(hcd->self.controller, - urb->transfer_dma, - urb->transfer_buffer_length, - dir); - else if (hcd->driver->flags & HCD_LOCAL_MEM) - hcd_free_coherent(urb->dev->bus, &urb->transfer_dma, - &urb->transfer_buffer, - urb->transfer_buffer_length, - dir); - } -} - /*-------------------------------------------------------------------------*/ /* may be called in any context with a valid urb->dev usecount @@ -1389,21 +1431,20 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags) * URBs must be submitted in process context with interrupts * enabled. */ - status = map_urb_for_dma(hcd, urb, mem_flags); - if (unlikely(status)) { - usbmon_urb_submit_error(&hcd->self, urb, status); - goto error; - } - if (is_root_hub(urb->dev)) + if (is_root_hub(urb->dev)) { status = rh_urb_enqueue(hcd, urb); - else - status = hcd->driver->urb_enqueue(hcd, urb, mem_flags); + } else { + status = map_urb_for_dma(hcd, urb, mem_flags); + if (likely(status == 0)) { + status = hcd->driver->urb_enqueue(hcd, urb, mem_flags); + if (unlikely(status)) + unmap_urb_for_dma(hcd, urb); + } + } if (unlikely(status)) { usbmon_urb_submit_error(&hcd->self, urb, status); - unmap_urb_for_dma(hcd, urb); - error: urb->hcpriv = NULL; INIT_LIST_HEAD(&urb->urb_list); atomic_dec(&urb->use_count); diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 619c44fb8a96..79d1cdf4a635 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -259,9 +259,6 @@ static void sg_clean(struct usb_sg_request *io) kfree(io->urbs); io->urbs = NULL; } - if (io->dev->dev.dma_mask != NULL) - usb_buffer_unmap_sg(io->dev, usb_pipein(io->pipe), - io->sg, io->nents); io->dev = NULL; } @@ -364,7 +361,6 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, { int i; int urb_flags; - int dma; int use_sg; if (!io || !dev || !sg @@ -378,21 +374,9 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->pipe = pipe; io->sg = sg; io->nents = nents; - - /* not all host controllers use DMA (like the mainstream pci ones); - * they can use PIO (sl811) or be software over another transport. - */ - dma = (dev->dev.dma_mask != NULL); - if (dma) - io->entries = usb_buffer_map_sg(dev, usb_pipein(pipe), - sg, nents); - else - io->entries = nents; + io->entries = nents; /* initialize all the urbs we'll use */ - if (io->entries <= 0) - return io->entries; - if (dev->bus->sg_tablesize > 0) { io->urbs = kmalloc(sizeof *io->urbs, mem_flags); use_sg = true; @@ -404,8 +388,6 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, goto nomem; urb_flags = 0; - if (dma) - urb_flags |= URB_NO_TRANSFER_DMA_MAP; if (usb_pipein(pipe)) urb_flags |= URB_SHORT_NOT_OK; @@ -423,12 +405,13 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->urbs[0]->complete = sg_complete; io->urbs[0]->context = io; + /* A length of zero means transfer the whole sg list */ io->urbs[0]->transfer_buffer_length = length; if (length == 0) { for_each_sg(sg, sg, io->entries, i) { io->urbs[0]->transfer_buffer_length += - sg_dma_len(sg); + sg->length; } } io->urbs[0]->sg = io; @@ -454,26 +437,16 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->urbs[i]->context = io; /* - * Some systems need to revert to PIO when DMA is temporarily - * unavailable. For their sakes, both transfer_buffer and - * transfer_dma are set when possible. - * - * Note that if IOMMU coalescing occurred, we cannot - * trust sg_page anymore, so check if S/G list shrunk. + * Some systems can't use DMA; they use PIO instead. + * For their sakes, transfer_buffer is set whenever + * possible. */ - if (io->nents == io->entries && !PageHighMem(sg_page(sg))) + if (!PageHighMem(sg_page(sg))) io->urbs[i]->transfer_buffer = sg_virt(sg); else io->urbs[i]->transfer_buffer = NULL; - if (dma) { - io->urbs[i]->transfer_dma = sg_dma_address(sg); - len = sg_dma_len(sg); - } else { - /* hc may use _only_ transfer_buffer */ - len = sg->length; - } - + len = sg->length; if (length) { len = min_t(unsigned, len, length); length -= len; @@ -481,6 +454,8 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->entries = i + 1; } io->urbs[i]->transfer_buffer_length = len; + + io->urbs[i]->sg = (struct usb_sg_request *) sg; } io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; } diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 2532a0917f8c..a760e46871c5 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -333,9 +333,12 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) is_out = usb_endpoint_dir_out(&ep->desc); } - /* Cache the direction for later use */ - urb->transfer_flags = (urb->transfer_flags & ~URB_DIR_MASK) | - (is_out ? URB_DIR_OUT : URB_DIR_IN); + /* Clear the internal flags and cache the direction for later use */ + urb->transfer_flags &= ~(URB_DIR_MASK | URB_DMA_MAP_SINGLE | + URB_DMA_MAP_PAGE | URB_DMA_MAP_SG | URB_MAP_LOCAL | + URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL | + URB_DMA_SG_COMBINED); + urb->transfer_flags |= (is_out ? URB_DIR_OUT : URB_DIR_IN); if (xfertype != USB_ENDPOINT_XFER_CONTROL && dev->state < USB_STATE_CONFIGURED) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 097172e2ba06..8180ce533ebf 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -881,6 +881,7 @@ void usb_buffer_unmap(struct urb *urb) EXPORT_SYMBOL_GPL(usb_buffer_unmap); #endif /* 0 */ +#if 0 /** * usb_buffer_map_sg - create scatterlist DMA mapping(s) for an endpoint * @dev: device to which the scatterlist will be mapped @@ -924,6 +925,7 @@ int usb_buffer_map_sg(const struct usb_device *dev, int is_in, is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE) ? : -ENOMEM; } EXPORT_SYMBOL_GPL(usb_buffer_map_sg); +#endif /* XXX DISABLED, no users currently. If you wish to re-enable this * XXX please determine whether the sync is to transfer ownership of @@ -960,6 +962,7 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in, EXPORT_SYMBOL_GPL(usb_buffer_dmasync_sg); #endif +#if 0 /** * usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist * @dev: device to which the scatterlist will be mapped @@ -985,6 +988,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in, is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } EXPORT_SYMBOL_GPL(usb_buffer_unmap_sg); +#endif /* To disable USB, kernel command line is 'nousb' not 'usbcore.nousb' */ #ifdef MODULE diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c index 141d049beb3e..b388dd1fb4c4 100644 --- a/drivers/usb/host/whci/qset.c +++ b/drivers/usb/host/whci/qset.c @@ -646,7 +646,7 @@ int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb, wurb->urb = urb; INIT_WORK(&wurb->dequeue_work, urb_dequeue_work); - if (urb->sg) { + if (urb->num_sgs) { ret = qset_add_urb_sg(whc, qset, urb, mem_flags); if (ret == -EINVAL) { qset_free_stds(qset, urb); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 407d33fb5e84..c1359ed310b5 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1962,7 +1962,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, int running_total, trb_buff_len, ret; u64 addr; - if (urb->sg) + if (urb->num_sgs) return queue_bulk_sg_tx(xhci, mem_flags, urb, slot_id, ep_index); ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index ddf7f9a1b336..8a7968df278f 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -416,7 +416,7 @@ static unsigned int mon_bin_get_data(const struct mon_reader_bin *rp, } else { /* If IOMMU coalescing occurred, we cannot trust sg_page */ - if (urb->sg->nents != urb->num_sgs) { + if (urb->transfer_flags & URB_DMA_SG_COMBINED) { *flag = 'D'; return length; } diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index 4d0be130f49b..d56260280f54 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -161,9 +161,7 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, } else { struct scatterlist *sg = urb->sg->sg; - /* If IOMMU coalescing occurred, we cannot trust sg_page */ - if (urb->sg->nents != urb->num_sgs || - PageHighMem(sg_page(sg))) + if (PageHighMem(sg_page(sg))) return 'D'; /* For the text interface we copy only the first sg buffer */ diff --git a/include/linux/usb.h b/include/linux/usb.h index 739f1fd1cc15..99833029e5a8 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -965,10 +965,19 @@ extern int usb_disabled(void); * needed */ #define URB_FREE_BUFFER 0x0100 /* Free transfer buffer with the URB */ +/* The following flags are used internally by usbcore and HCDs */ #define URB_DIR_IN 0x0200 /* Transfer from device to host */ #define URB_DIR_OUT 0 #define URB_DIR_MASK URB_DIR_IN +#define URB_DMA_MAP_SINGLE 0x00010000 /* Non-scatter-gather mapping */ +#define URB_DMA_MAP_PAGE 0x00020000 /* HCD-unsupported S-G */ +#define URB_DMA_MAP_SG 0x00040000 /* HCD-supported S-G */ +#define URB_MAP_LOCAL 0x00080000 /* HCD-local-memory mapping */ +#define URB_SETUP_MAP_SINGLE 0x00100000 /* Setup packet DMA mapped */ +#define URB_SETUP_MAP_LOCAL 0x00200000 /* HCD-local setup packet */ +#define URB_DMA_SG_COMBINED 0x00400000 /* S-G entries were combined */ + struct usb_iso_packet_descriptor { unsigned int offset; unsigned int length; /* expected length */ -- cgit v1.2.3-58-ga151 From 7560d32ec70508a71f537a88e40f7717f15389ac Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 2 Apr 2010 13:18:50 -0400 Subject: USB: improve runtime remote wakeup settings This patch (as1362) adjusts the way the USB autosuspend routines handle remote-wakeup settings. They aren't supposed to use device_may_wakeup(); that test is intended only for system sleep, not runtime power management. Instead the code checks to see if any interface drivers need remote wakeup; if they do then it is enabled, provided the device is capable of it. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index edff55a32575..271e857be0fa 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1486,9 +1486,6 @@ int usb_autoresume_device(struct usb_device *udev) * 0, a delayed autosuspend request for @intf's device is attempted. The * attempt may fail (see autosuspend_check()). * - * If the driver has set @intf->needs_remote_wakeup then autosuspend will - * take place only if the device's remote-wakeup facility is enabled. - * * This routine can run only in process context. */ void usb_autopm_put_interface(struct usb_interface *intf) @@ -1673,14 +1670,14 @@ EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume); /* Internal routine to check whether we may autosuspend a device. */ static int autosuspend_check(struct usb_device *udev) { - int i; + int w, i; struct usb_interface *intf; unsigned long suspend_time, j; /* Fail if autosuspend is disabled, or any interfaces are in use, or * any interface drivers require remote wakeup but it isn't available. */ - udev->do_remote_wakeup = device_may_wakeup(&udev->dev); + w = 0; if (udev->actconfig) { for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { intf = udev->actconfig->interface[i]; @@ -1694,12 +1691,7 @@ static int autosuspend_check(struct usb_device *udev) continue; if (atomic_read(&intf->dev.power.usage_count) > 0) return -EBUSY; - if (intf->needs_remote_wakeup && - !udev->do_remote_wakeup) { - dev_dbg(&udev->dev, "remote wakeup needed " - "for autosuspend\n"); - return -EOPNOTSUPP; - } + w |= intf->needs_remote_wakeup; /* Don't allow autosuspend if the device will need * a reset-resume and any of its interface drivers @@ -1715,6 +1707,11 @@ static int autosuspend_check(struct usb_device *udev) } } } + if (w && !device_can_wakeup(&udev->dev)) { + dev_dbg(&udev->dev, "remote wakeup needed for autosuspend\n"); + return -EOPNOTSUPP; + } + udev->do_remote_wakeup = w; /* If everything is okay but the device hasn't been idle for long * enough, queue a delayed autosuspend request. -- cgit v1.2.3-58-ga151 From 7aba8d014341341590ecb64050b7a026642a62eb Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 2 Apr 2010 13:21:33 -0400 Subject: USB: don't enable remote wakeup by default This patch (as1364) avoids enabling remote wakeup by default on all non-root-hub USB devices. Individual drivers or userspace will have to enable it wherever it is needed, such as for keyboards or network interfaces. Note: This affects only system sleep, not autosuspend. External hubs will continue to relay wakeup requests received from downstream through their upstream port, even when remote wakeup is not enabled for the hub itself. Disabling remote wakeup on a hub merely prevents it from generating wakeup requests in response to connect, disconnect, and overcurrent events. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 497dbb29744d..2a767b3143a4 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1783,7 +1783,6 @@ int usb_new_device(struct usb_device *udev) * sysfs power/wakeup controls wakeup enabled/disabled */ device_init_wakeup(&udev->dev, 0); - device_set_wakeup_enable(&udev->dev, 1); } /* Tell the runtime-PM framework the device is active */ -- cgit v1.2.3-58-ga151 From 9e18c821659d836bd63f88df3c19729327728496 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 2 Apr 2010 13:22:09 -0400 Subject: USB: use PM core routines to enable/disable autosuspend This patch (as1366) replaces the private routines usb_enable_autosuspend() and usb_disable_autosuspend() with calls to the standard pm_runtime_allow() and pm_runtime_forbid() functions in the runtime PM framework. They do the same thing. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 21 +++++---------------- drivers/usb/core/sysfs.c | 10 +++++----- include/linux/usb.h | 6 ++---- 3 files changed, 12 insertions(+), 25 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 271e857be0fa..207146743ea7 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1356,13 +1356,9 @@ int usb_resume(struct device *dev, pm_message_t msg) * * The caller must hold @udev's device lock. */ -int usb_enable_autosuspend(struct usb_device *udev) +void usb_enable_autosuspend(struct usb_device *udev) { - if (udev->autosuspend_disabled) { - udev->autosuspend_disabled = 0; - usb_autosuspend_device(udev); - } - return 0; + pm_runtime_allow(&udev->dev); } EXPORT_SYMBOL_GPL(usb_enable_autosuspend); @@ -1375,16 +1371,9 @@ EXPORT_SYMBOL_GPL(usb_enable_autosuspend); * * The caller must hold @udev's device lock. */ -int usb_disable_autosuspend(struct usb_device *udev) +void usb_disable_autosuspend(struct usb_device *udev) { - int rc = 0; - - if (!udev->autosuspend_disabled) { - rc = usb_autoresume_device(udev); - if (rc == 0) - udev->autosuspend_disabled = 1; - } - return rc; + pm_runtime_forbid(&udev->dev); } EXPORT_SYMBOL_GPL(usb_disable_autosuspend); @@ -1528,7 +1517,7 @@ void usb_autopm_put_interface_async(struct usb_interface *intf) atomic_dec(&intf->pm_usage_cnt); pm_runtime_put_noidle(&intf->dev); - if (!udev->autosuspend_disabled) { + if (udev->dev.power.runtime_auto) { /* Optimization: Don't schedule a delayed autosuspend if * the timer is already running and the expiration time * wouldn't change. diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 43c002e3a9aa..b65c1eaf3aba 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -389,7 +389,7 @@ show_level(struct device *dev, struct device_attribute *attr, char *buf) struct usb_device *udev = to_usb_device(dev); const char *p = auto_string; - if (udev->state != USB_STATE_SUSPENDED && udev->autosuspend_disabled) + if (udev->state != USB_STATE_SUSPENDED && !udev->dev.power.runtime_auto) p = on_string; return sprintf(buf, "%s\n", p); } @@ -401,7 +401,7 @@ set_level(struct device *dev, struct device_attribute *attr, struct usb_device *udev = to_usb_device(dev); int len = count; char *cp; - int rc; + int rc = count; cp = memchr(buf, '\n', count); if (cp) @@ -411,17 +411,17 @@ set_level(struct device *dev, struct device_attribute *attr, if (len == sizeof on_string - 1 && strncmp(buf, on_string, len) == 0) - rc = usb_disable_autosuspend(udev); + usb_disable_autosuspend(udev); else if (len == sizeof auto_string - 1 && strncmp(buf, auto_string, len) == 0) - rc = usb_enable_autosuspend(udev); + usb_enable_autosuspend(udev); else rc = -EINVAL; usb_unlock_device(udev); - return (rc < 0 ? rc : count); + return rc; } static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level); diff --git a/include/linux/usb.h b/include/linux/usb.h index 99833029e5a8..e32a849f81ce 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -425,7 +425,6 @@ struct usb_tt; * @connect_time: time device was first connected * @do_remote_wakeup: remote wakeup should be enabled * @reset_resume: needs reset instead of resume - * @autosuspend_disabled: autosuspend disabled by the user * @wusb_dev: if this is a Wireless USB device, link to the WUSB * specific data for the device. * @slot_id: Slot ID assigned by xHCI @@ -501,7 +500,6 @@ struct usb_device { unsigned do_remote_wakeup:1; unsigned reset_resume:1; - unsigned autosuspend_disabled:1; #endif struct wusb_dev *wusb_dev; int slot_id; @@ -526,8 +524,8 @@ extern struct usb_device *usb_find_device(u16 vendor_id, u16 product_id); /* USB autosuspend and autoresume */ #ifdef CONFIG_USB_SUSPEND -extern int usb_enable_autosuspend(struct usb_device *udev); -extern int usb_disable_autosuspend(struct usb_device *udev); +extern void usb_enable_autosuspend(struct usb_device *udev); +extern void usb_disable_autosuspend(struct usb_device *udev); extern int usb_autopm_get_interface(struct usb_interface *intf); extern void usb_autopm_put_interface(struct usb_interface *intf); -- cgit v1.2.3-58-ga151 From a90309860b0935805d49e75499fb8dc59fea8e94 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 2 Apr 2010 13:22:16 -0400 Subject: USB: deprecate the power/level sysfs attribute This patch (as1367) deprecates USB's power/level sysfs attribute in favor of the power/control attribute provided by the runtime PM core. The two attributes do the same thing. It would be nice to replace power/level with a symlink to power/control, but at the moment sysfs doesn't offer any way to do so. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/obsolete/sysfs-bus-usb | 31 +++++++++++++++++++++++++++++++ Documentation/ABI/testing/sysfs-bus-usb | 28 ---------------------------- Documentation/usb/power-management.txt | 19 +++++++++++-------- drivers/usb/core/sysfs.c | 12 ++++++++++++ 4 files changed, 54 insertions(+), 36 deletions(-) create mode 100644 Documentation/ABI/obsolete/sysfs-bus-usb (limited to 'drivers') diff --git a/Documentation/ABI/obsolete/sysfs-bus-usb b/Documentation/ABI/obsolete/sysfs-bus-usb new file mode 100644 index 000000000000..bd096d33fbc7 --- /dev/null +++ b/Documentation/ABI/obsolete/sysfs-bus-usb @@ -0,0 +1,31 @@ +What: /sys/bus/usb/devices/.../power/level +Date: March 2007 +KernelVersion: 2.6.21 +Contact: Alan Stern +Description: + Each USB device directory will contain a file named + power/level. This file holds a power-level setting for + the device, either "on" or "auto". + + "on" means that the device is not allowed to autosuspend, + although normal suspends for system sleep will still + be honored. "auto" means the device will autosuspend + and autoresume in the usual manner, according to the + capabilities of its driver. + + During normal use, devices should be left in the "auto" + level. The "on" level is meant for administrative uses. + If you want to suspend a device immediately but leave it + free to wake up in response to I/O requests, you should + write "0" to power/autosuspend. + + Device not capable of proper suspend and resume should be + left in the "on" level. Although the USB spec requires + devices to support suspend/resume, many of them do not. + In fact so many don't that by default, the USB core + initializes all non-hub devices in the "on" level. Some + drivers may change this setting when they are bound. + + This file is deprecated and will be removed after 2010. + Use the power/control file instead; it does exactly the + same thing. diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index bcebb9eaedce..294aa864a60a 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -14,34 +14,6 @@ Description: The autosuspend delay for newly-created devices is set to the value of the usbcore.autosuspend module parameter. -What: /sys/bus/usb/devices/.../power/level -Date: March 2007 -KernelVersion: 2.6.21 -Contact: Alan Stern -Description: - Each USB device directory will contain a file named - power/level. This file holds a power-level setting for - the device, either "on" or "auto". - - "on" means that the device is not allowed to autosuspend, - although normal suspends for system sleep will still - be honored. "auto" means the device will autosuspend - and autoresume in the usual manner, according to the - capabilities of its driver. - - During normal use, devices should be left in the "auto" - level. The "on" level is meant for administrative uses. - If you want to suspend a device immediately but leave it - free to wake up in response to I/O requests, you should - write "0" to power/autosuspend. - - Device not capable of proper suspend and resume should be - left in the "on" level. Although the USB spec requires - devices to support suspend/resume, many of them do not. - In fact so many don't that by default, the USB core - initializes all non-hub devices in the "on" level. Some - drivers may change this setting when they are bound. - What: /sys/bus/usb/devices/.../power/persist Date: May 2007 KernelVersion: 2.6.23 diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index 2790ad48cfc2..b29d8e56cf28 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt @@ -107,7 +107,9 @@ allowed to issue dynamic suspends. The user interface for controlling dynamic PM is located in the power/ subdirectory of each USB device's sysfs directory, that is, in /sys/bus/usb/devices/.../power/ where "..." is the device's ID. The -relevant attribute files are: wakeup, level, and autosuspend. +relevant attribute files are: wakeup, control, and autosuspend. +(There may also be a file named "level"; this file was deprecated +as of the 2.6.35 kernel and replaced by the "control" file.) power/wakeup @@ -120,7 +122,7 @@ relevant attribute files are: wakeup, level, and autosuspend. while the device is suspended, the change won't take effect until the following suspend.) - power/level + power/control This file contains one of two words: "on" or "auto". You can write those words to the file to change the @@ -148,14 +150,15 @@ relevant attribute files are: wakeup, level, and autosuspend. never to autosuspend. You can write a number to the file to change the autosuspend idle-delay time. -Writing "-1" to power/autosuspend and writing "on" to power/level do +Writing "-1" to power/autosuspend and writing "on" to power/control do essentially the same thing -- they both prevent the device from being autosuspended. Yes, this is a redundancy in the API. (In 2.6.21 writing "0" to power/autosuspend would prevent the device from being autosuspended; the behavior was changed in 2.6.22. The power/autosuspend attribute did not exist prior to 2.6.21, and the -power/level attribute did not exist prior to 2.6.22.) +power/level attribute did not exist prior to 2.6.22. power/control +was added in 2.6.34.) Changing the default idle-delay time @@ -212,7 +215,7 @@ among printers and scanners, but plenty of other types of device have the same deficiency. For this reason, by default the kernel disables autosuspend (the -power/level attribute is initialized to "on") for all devices other +power/control attribute is initialized to "on") for all devices other than hubs. Hubs, at least, appear to be reasonably well-behaved in this regard. @@ -373,7 +376,7 @@ usb_autopm_put_interface() in its close or release routine. But other patterns are possible. The autosuspend attempts mentioned above will often fail for one -reason or another. For example, the power/level attribute might be +reason or another. For example, the power/control attribute might be set to "on", or another interface in the same device might not be idle. This is perfectly normal. If the reason for failure was that the device hasn't been idle for long enough, a timer is scheduled to @@ -394,12 +397,12 @@ Drivers can enable autosuspend for their devices by calling in their probe() routine, if they know that the device is capable of suspending and resuming correctly. This is exactly equivalent to -writing "auto" to the device's power/level attribute. Likewise, +writing "auto" to the device's power/control attribute. Likewise, drivers can disable autosuspend by calling usb_disable_autosuspend(struct usb_device *udev); -This is exactly the same as writing "on" to the power/level attribute. +This is exactly the same as writing "on" to the power/control attribute. Sometimes a driver needs to make sure that remote wakeup is enabled during autosuspend. For example, there's not much point diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index b65c1eaf3aba..06863befaf3a 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -383,12 +383,23 @@ static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR, static const char on_string[] = "on"; static const char auto_string[] = "auto"; +static void warn_level(void) { + static int level_warned; + + if (!level_warned) { + level_warned = 1; + printk(KERN_WARNING "WARNING! power/level is deprecated; " + "use power/control instead\n"); + } +} + static ssize_t show_level(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_device *udev = to_usb_device(dev); const char *p = auto_string; + warn_level(); if (udev->state != USB_STATE_SUSPENDED && !udev->dev.power.runtime_auto) p = on_string; return sprintf(buf, "%s\n", p); @@ -403,6 +414,7 @@ set_level(struct device *dev, struct device_attribute *attr, char *cp; int rc = count; + warn_level(); cp = memchr(buf, '\n', count); if (cp) len = cp - buf; -- cgit v1.2.3-58-ga151 From 0d4561947b8ddd5d944bdbbdc1ea1d6fd9a06041 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 1 Apr 2010 12:31:07 -0400 Subject: usb serial: Add generic USB wwan support The generic USB serial code is ill-suited for high-speed USB wwan devices, resulting in the option driver. However, other non-option devices may also gain similar benefits from not using the generic code. Factorise out the non-option specific code from the option driver and make it available to other users. Signed-off-by: Matthew Garrett Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 3 + drivers/usb/serial/Makefile | 1 + drivers/usb/serial/usb-wwan.h | 67 +++++ drivers/usb/serial/usb_wwan.c | 665 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 736 insertions(+) create mode 100644 drivers/usb/serial/usb-wwan.h create mode 100644 drivers/usb/serial/usb_wwan.c (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index 5f777c20f2e2..e399efdb91e5 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -576,6 +576,9 @@ config USB_SERIAL_XIRCOM To compile this driver as a module, choose M here: the module will be called keyspan_pda. +config USB_SERIAL_WWAN + tristate + config USB_SERIAL_OPTION tristate "USB driver for GSM and CDMA modems" help diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index 3203614e3892..e54c728c016e 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile @@ -52,6 +52,7 @@ obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI) += siemens_mpi.o obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS) += sierra.o obj-$(CONFIG_USB_SERIAL_SPCP8X5) += spcp8x5.o obj-$(CONFIG_USB_SERIAL_SYMBOL) += symbolserial.o +obj-$(CONFIG_USB_SERIAL_WWAN) += usb_wwan.o obj-$(CONFIG_USB_SERIAL_TI) += ti_usb_3410_5052.o obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h new file mode 100644 index 000000000000..2be298a1305b --- /dev/null +++ b/drivers/usb/serial/usb-wwan.h @@ -0,0 +1,67 @@ +/* + * Definitions for USB serial mobile broadband cards + */ + +#ifndef __LINUX_USB_USB_WWAN +#define __LINUX_USB_USB_WWAN + +extern void usb_wwan_dtr_rts(struct usb_serial_port *port, int on); +extern int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port); +extern void usb_wwan_close(struct usb_serial_port *port); +extern int usb_wwan_startup(struct usb_serial *serial); +extern void usb_wwan_disconnect(struct usb_serial *serial); +extern void usb_wwan_release(struct usb_serial *serial); +extern int usb_wwan_write_room(struct tty_struct *tty); +extern void usb_wwan_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, + struct ktermios *old); +extern int usb_wwan_tiocmget(struct tty_struct *tty, struct file *file); +extern int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear); +extern int usb_wwan_send_setup(struct usb_serial_port *port); +extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count); +extern int usb_wwan_chars_in_buffer(struct tty_struct *tty); +#ifdef CONFIG_PM +extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message); +extern int usb_wwan_resume(struct usb_serial *serial); +#endif + +/* per port private data */ + +#define N_IN_URB 4 +#define N_OUT_URB 4 +#define IN_BUFLEN 4096 +#define OUT_BUFLEN 4096 + +struct usb_wwan_intf_private { + spinlock_t susp_lock; + unsigned int suspended:1; + int in_flight; + int (*send_setup) (struct usb_serial_port *port); + void *private; +}; + +struct usb_wwan_port_private { + /* Input endpoints and buffer for this port */ + struct urb *in_urbs[N_IN_URB]; + u8 *in_buffer[N_IN_URB]; + /* Output endpoints and buffer for this port */ + struct urb *out_urbs[N_OUT_URB]; + u8 *out_buffer[N_OUT_URB]; + unsigned long out_busy; /* Bit vector of URBs in use */ + int opened; + struct usb_anchor delayed; + + /* Settings for the port */ + int rts_state; /* Handshaking pins (outputs) */ + int dtr_state; + int cts_state; /* Handshaking pins (inputs) */ + int dsr_state; + int dcd_state; + int ri_state; + + unsigned long tx_start_time[N_OUT_URB]; +}; + +#endif /* __LINUX_USB_USB_WWAN */ diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c new file mode 100644 index 000000000000..0c70b4a621bb --- /dev/null +++ b/drivers/usb/serial/usb_wwan.c @@ -0,0 +1,665 @@ +/* + USB Driver layer for GSM modems + + Copyright (C) 2005 Matthias Urlichs + + This driver is free software; you can redistribute it and/or modify + it under the terms of Version 2 of the GNU General Public License as + published by the Free Software Foundation. + + Portions copied from the Keyspan driver by Hugh Blemings + + History: see the git log. + + Work sponsored by: Sigos GmbH, Germany + + This driver exists because the "normal" serial driver doesn't work too well + with GSM modems. Issues: + - data loss -- one single Receive URB is not nearly enough + - controlling the baud rate doesn't make sense +*/ + +#define DRIVER_VERSION "v0.7.2" +#define DRIVER_AUTHOR "Matthias Urlichs " +#define DRIVER_DESC "USB Driver for GSM modems" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "usb-wwan.h" + +static int debug; + +void usb_wwan_dtr_rts(struct usb_serial_port *port, int on) +{ + struct usb_serial *serial = port->serial; + struct usb_wwan_port_private *portdata; + + struct usb_wwan_intf_private *intfdata; + + dbg("%s", __func__); + + intfdata = port->serial->private; + + if (!intfdata->send_setup) + return; + + portdata = usb_get_serial_port_data(port); + mutex_lock(&serial->disc_mutex); + portdata->rts_state = on; + portdata->dtr_state = on; + if (serial->dev) + intfdata->send_setup(port); + mutex_unlock(&serial->disc_mutex); +} +EXPORT_SYMBOL(usb_wwan_dtr_rts); + +void usb_wwan_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, + struct ktermios *old_termios) +{ + struct usb_wwan_intf_private *intfdata = port->serial->private; + + dbg("%s", __func__); + + /* Doesn't support option setting */ + tty_termios_copy_hw(tty->termios, old_termios); + + if (intfdata->send_setup) + intfdata->send_setup(port); +} +EXPORT_SYMBOL(usb_wwan_set_termios); + +int usb_wwan_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct usb_serial_port *port = tty->driver_data; + unsigned int value; + struct usb_wwan_port_private *portdata; + + portdata = usb_get_serial_port_data(port); + + value = ((portdata->rts_state) ? TIOCM_RTS : 0) | + ((portdata->dtr_state) ? TIOCM_DTR : 0) | + ((portdata->cts_state) ? TIOCM_CTS : 0) | + ((portdata->dsr_state) ? TIOCM_DSR : 0) | + ((portdata->dcd_state) ? TIOCM_CAR : 0) | + ((portdata->ri_state) ? TIOCM_RNG : 0); + + return value; +} +EXPORT_SYMBOL(usb_wwan_tiocmget); + +int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct usb_serial_port *port = tty->driver_data; + struct usb_wwan_port_private *portdata; + struct usb_wwan_intf_private *intfdata; + + portdata = usb_get_serial_port_data(port); + intfdata = port->serial->private; + + if (!intfdata->send_setup) + return -EINVAL; + + /* FIXME: what locks portdata fields ? */ + if (set & TIOCM_RTS) + portdata->rts_state = 1; + if (set & TIOCM_DTR) + portdata->dtr_state = 1; + + if (clear & TIOCM_RTS) + portdata->rts_state = 0; + if (clear & TIOCM_DTR) + portdata->dtr_state = 0; + return intfdata->send_setup(port); +} +EXPORT_SYMBOL(usb_wwan_tiocmset); + +/* Write */ +int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count) +{ + struct usb_wwan_port_private *portdata; + struct usb_wwan_intf_private *intfdata; + int i; + int left, todo; + struct urb *this_urb = NULL; /* spurious */ + int err; + unsigned long flags; + + portdata = usb_get_serial_port_data(port); + intfdata = port->serial->private; + + dbg("%s: write (%d chars)", __func__, count); + + i = 0; + left = count; + for (i = 0; left > 0 && i < N_OUT_URB; i++) { + todo = left; + if (todo > OUT_BUFLEN) + todo = OUT_BUFLEN; + + this_urb = portdata->out_urbs[i]; + if (test_and_set_bit(i, &portdata->out_busy)) { + if (time_before(jiffies, + portdata->tx_start_time[i] + 10 * HZ)) + continue; + usb_unlink_urb(this_urb); + continue; + } + dbg("%s: endpoint %d buf %d", __func__, + usb_pipeendpoint(this_urb->pipe), i); + + err = usb_autopm_get_interface_async(port->serial->interface); + if (err < 0) + break; + + /* send the data */ + memcpy(this_urb->transfer_buffer, buf, todo); + this_urb->transfer_buffer_length = todo; + + spin_lock_irqsave(&intfdata->susp_lock, flags); + if (intfdata->suspended) { + usb_anchor_urb(this_urb, &portdata->delayed); + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + } else { + intfdata->in_flight++; + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + err = usb_submit_urb(this_urb, GFP_ATOMIC); + if (err) { + dbg("usb_submit_urb %p (write bulk) failed " + "(%d)", this_urb, err); + clear_bit(i, &portdata->out_busy); + spin_lock_irqsave(&intfdata->susp_lock, flags); + intfdata->in_flight--; + spin_unlock_irqrestore(&intfdata->susp_lock, + flags); + continue; + } + } + + portdata->tx_start_time[i] = jiffies; + buf += todo; + left -= todo; + } + + count -= left; + dbg("%s: wrote (did %d)", __func__, count); + return count; +} +EXPORT_SYMBOL(usb_wwan_write); + +static void usb_wwan_indat_callback(struct urb *urb) +{ + int err; + int endpoint; + struct usb_serial_port *port; + struct tty_struct *tty; + unsigned char *data = urb->transfer_buffer; + int status = urb->status; + + dbg("%s: %p", __func__, urb); + + endpoint = usb_pipeendpoint(urb->pipe); + port = urb->context; + + if (status) { + dbg("%s: nonzero status: %d on endpoint %02x.", + __func__, status, endpoint); + } else { + tty = tty_port_tty_get(&port->port); + if (urb->actual_length) { + tty_insert_flip_string(tty, data, urb->actual_length); + tty_flip_buffer_push(tty); + } else + dbg("%s: empty read urb received", __func__); + tty_kref_put(tty); + + /* Resubmit urb so we continue receiving */ + if (status != -ESHUTDOWN) { + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err && err != -EPERM) + printk(KERN_ERR "%s: resubmit read urb failed. " + "(%d)", __func__, err); + else + usb_mark_last_busy(port->serial->dev); + } + + } + return; +} + +static void usb_wwan_outdat_callback(struct urb *urb) +{ + struct usb_serial_port *port; + struct usb_wwan_port_private *portdata; + struct usb_wwan_intf_private *intfdata; + int i; + + dbg("%s", __func__); + + port = urb->context; + intfdata = port->serial->private; + + usb_serial_port_softint(port); + usb_autopm_put_interface_async(port->serial->interface); + portdata = usb_get_serial_port_data(port); + spin_lock(&intfdata->susp_lock); + intfdata->in_flight--; + spin_unlock(&intfdata->susp_lock); + + for (i = 0; i < N_OUT_URB; ++i) { + if (portdata->out_urbs[i] == urb) { + smp_mb__before_clear_bit(); + clear_bit(i, &portdata->out_busy); + break; + } + } +} + +int usb_wwan_write_room(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct usb_wwan_port_private *portdata; + int i; + int data_len = 0; + struct urb *this_urb; + + portdata = usb_get_serial_port_data(port); + + for (i = 0; i < N_OUT_URB; i++) { + this_urb = portdata->out_urbs[i]; + if (this_urb && !test_bit(i, &portdata->out_busy)) + data_len += OUT_BUFLEN; + } + + dbg("%s: %d", __func__, data_len); + return data_len; +} +EXPORT_SYMBOL(usb_wwan_write_room); + +int usb_wwan_chars_in_buffer(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct usb_wwan_port_private *portdata; + int i; + int data_len = 0; + struct urb *this_urb; + + portdata = usb_get_serial_port_data(port); + + for (i = 0; i < N_OUT_URB; i++) { + this_urb = portdata->out_urbs[i]; + /* FIXME: This locking is insufficient as this_urb may + go unused during the test */ + if (this_urb && test_bit(i, &portdata->out_busy)) + data_len += this_urb->transfer_buffer_length; + } + dbg("%s: %d", __func__, data_len); + return data_len; +} +EXPORT_SYMBOL(usb_wwan_chars_in_buffer); + +int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port) +{ + struct usb_wwan_port_private *portdata; + struct usb_wwan_intf_private *intfdata; + struct usb_serial *serial = port->serial; + int i, err; + struct urb *urb; + + portdata = usb_get_serial_port_data(port); + intfdata = serial->private; + + dbg("%s", __func__); + + /* Start reading from the IN endpoint */ + for (i = 0; i < N_IN_URB; i++) { + urb = portdata->in_urbs[i]; + if (!urb) + continue; + err = usb_submit_urb(urb, GFP_KERNEL); + if (err) { + dbg("%s: submit urb %d failed (%d) %d", + __func__, i, err, urb->transfer_buffer_length); + } + } + + if (intfdata->send_setup) + intfdata->send_setup(port); + + serial->interface->needs_remote_wakeup = 1; + spin_lock_irq(&intfdata->susp_lock); + portdata->opened = 1; + spin_unlock_irq(&intfdata->susp_lock); + usb_autopm_put_interface(serial->interface); + + return 0; +} +EXPORT_SYMBOL(usb_wwan_open); + +void usb_wwan_close(struct usb_serial_port *port) +{ + int i; + struct usb_serial *serial = port->serial; + struct usb_wwan_port_private *portdata; + struct usb_wwan_intf_private *intfdata = port->serial->private; + + dbg("%s", __func__); + portdata = usb_get_serial_port_data(port); + + if (serial->dev) { + /* Stop reading/writing urbs */ + spin_lock_irq(&intfdata->susp_lock); + portdata->opened = 0; + spin_unlock_irq(&intfdata->susp_lock); + + for (i = 0; i < N_IN_URB; i++) + usb_kill_urb(portdata->in_urbs[i]); + for (i = 0; i < N_OUT_URB; i++) + usb_kill_urb(portdata->out_urbs[i]); + usb_autopm_get_interface(serial->interface); + serial->interface->needs_remote_wakeup = 0; + } +} +EXPORT_SYMBOL(usb_wwan_close); + +/* Helper functions used by usb_wwan_setup_urbs */ +static struct urb *usb_wwan_setup_urb(struct usb_serial *serial, int endpoint, + int dir, void *ctx, char *buf, int len, + void (*callback) (struct urb *)) +{ + struct urb *urb; + + if (endpoint == -1) + return NULL; /* endpoint not needed */ + + urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ + if (urb == NULL) { + dbg("%s: alloc for endpoint %d failed.", __func__, endpoint); + return NULL; + } + + /* Fill URB using supplied data. */ + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, endpoint) | dir, + buf, len, callback, ctx); + + return urb; +} + +/* Setup urbs */ +static void usb_wwan_setup_urbs(struct usb_serial *serial) +{ + int i, j; + struct usb_serial_port *port; + struct usb_wwan_port_private *portdata; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + + /* Do indat endpoints first */ + for (j = 0; j < N_IN_URB; ++j) { + portdata->in_urbs[j] = usb_wwan_setup_urb(serial, + port-> + bulk_in_endpointAddress, + USB_DIR_IN, + port, + portdata-> + in_buffer[j], + IN_BUFLEN, + usb_wwan_indat_callback); + } + + /* outdat endpoints */ + for (j = 0; j < N_OUT_URB; ++j) { + portdata->out_urbs[j] = usb_wwan_setup_urb(serial, + port-> + bulk_out_endpointAddress, + USB_DIR_OUT, + port, + portdata-> + out_buffer + [j], + OUT_BUFLEN, + usb_wwan_outdat_callback); + } + } +} + +int usb_wwan_startup(struct usb_serial *serial) +{ + int i, j, err; + struct usb_serial_port *port; + struct usb_wwan_port_private *portdata; + u8 *buffer; + + dbg("%s", __func__); + + /* Now setup per port private data */ + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); + if (!portdata) { + dbg("%s: kmalloc for usb_wwan_port_private (%d) failed!.", + __func__, i); + return 1; + } + init_usb_anchor(&portdata->delayed); + + for (j = 0; j < N_IN_URB; j++) { + buffer = (u8 *) __get_free_page(GFP_KERNEL); + if (!buffer) + goto bail_out_error; + portdata->in_buffer[j] = buffer; + } + + for (j = 0; j < N_OUT_URB; j++) { + buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL); + if (!buffer) + goto bail_out_error2; + portdata->out_buffer[j] = buffer; + } + + usb_set_serial_port_data(port, portdata); + + if (!port->interrupt_in_urb) + continue; + err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); + if (err) + dbg("%s: submit irq_in urb failed %d", __func__, err); + } + usb_wwan_setup_urbs(serial); + return 0; + +bail_out_error2: + for (j = 0; j < N_OUT_URB; j++) + kfree(portdata->out_buffer[j]); +bail_out_error: + for (j = 0; j < N_IN_URB; j++) + if (portdata->in_buffer[j]) + free_page((unsigned long)portdata->in_buffer[j]); + kfree(portdata); + return 1; +} +EXPORT_SYMBOL(usb_wwan_startup); + +static void stop_read_write_urbs(struct usb_serial *serial) +{ + int i, j; + struct usb_serial_port *port; + struct usb_wwan_port_private *portdata; + + /* Stop reading/writing urbs */ + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + for (j = 0; j < N_IN_URB; j++) + usb_kill_urb(portdata->in_urbs[j]); + for (j = 0; j < N_OUT_URB; j++) + usb_kill_urb(portdata->out_urbs[j]); + } +} + +void usb_wwan_disconnect(struct usb_serial *serial) +{ + dbg("%s", __func__); + + stop_read_write_urbs(serial); +} +EXPORT_SYMBOL(usb_wwan_disconnect); + +void usb_wwan_release(struct usb_serial *serial) +{ + int i, j; + struct usb_serial_port *port; + struct usb_wwan_port_private *portdata; + + dbg("%s", __func__); + + /* Now free them */ + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + + for (j = 0; j < N_IN_URB; j++) { + usb_free_urb(portdata->in_urbs[j]); + free_page((unsigned long) + portdata->in_buffer[j]); + portdata->in_urbs[j] = NULL; + } + for (j = 0; j < N_OUT_URB; j++) { + usb_free_urb(portdata->out_urbs[j]); + kfree(portdata->out_buffer[j]); + portdata->out_urbs[j] = NULL; + } + } + + /* Now free per port private data */ + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + kfree(usb_get_serial_port_data(port)); + } +} +EXPORT_SYMBOL(usb_wwan_release); + +#ifdef CONFIG_PM +int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message) +{ + struct usb_wwan_intf_private *intfdata = serial->private; + int b; + + dbg("%s entered", __func__); + + if (message.event & PM_EVENT_AUTO) { + spin_lock_irq(&intfdata->susp_lock); + b = intfdata->in_flight; + spin_unlock_irq(&intfdata->susp_lock); + + if (b) + return -EBUSY; + } + + spin_lock_irq(&intfdata->susp_lock); + intfdata->suspended = 1; + spin_unlock_irq(&intfdata->susp_lock); + stop_read_write_urbs(serial); + + return 0; +} +EXPORT_SYMBOL(usb_wwan_suspend); + +static void play_delayed(struct usb_serial_port *port) +{ + struct usb_wwan_intf_private *data; + struct usb_wwan_port_private *portdata; + struct urb *urb; + int err; + + portdata = usb_get_serial_port_data(port); + data = port->serial->private; + while ((urb = usb_get_from_anchor(&portdata->delayed))) { + err = usb_submit_urb(urb, GFP_ATOMIC); + if (!err) + data->in_flight++; + } +} + +int usb_wwan_resume(struct usb_serial *serial) +{ + int i, j; + struct usb_serial_port *port; + struct usb_wwan_intf_private *intfdata = serial->private; + struct usb_wwan_port_private *portdata; + struct urb *urb; + int err = 0; + + dbg("%s entered", __func__); + /* get the interrupt URBs resubmitted unconditionally */ + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + if (!port->interrupt_in_urb) { + dbg("%s: No interrupt URB for port %d", __func__, i); + continue; + } + err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO); + dbg("Submitted interrupt URB for port %d (result %d)", i, err); + if (err < 0) { + err("%s: Error %d for interrupt URB of port%d", + __func__, err, i); + goto err_out; + } + } + + for (i = 0; i < serial->num_ports; i++) { + /* walk all ports */ + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + + /* skip closed ports */ + spin_lock_irq(&intfdata->susp_lock); + if (!portdata->opened) { + spin_unlock_irq(&intfdata->susp_lock); + continue; + } + + for (j = 0; j < N_IN_URB; j++) { + urb = portdata->in_urbs[j]; + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err < 0) { + err("%s: Error %d for bulk URB %d", + __func__, err, i); + spin_unlock_irq(&intfdata->susp_lock); + goto err_out; + } + } + play_delayed(port); + spin_unlock_irq(&intfdata->susp_lock); + } + spin_lock_irq(&intfdata->susp_lock); + intfdata->suspended = 0; + spin_unlock_irq(&intfdata->susp_lock); +err_out: + return err; +} +EXPORT_SYMBOL(usb_wwan_resume); +#endif + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug messages"); -- cgit v1.2.3-58-ga151 From 8b4c6a3ab596961b784659c71dc24b341f938a1a Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 1 Apr 2010 12:31:08 -0400 Subject: USB: option: Use generic USB wwan code As this code was simply factored out of option, this is a simple conversion. Signed-off-by: Matthew Garrett Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 1 + drivers/usb/serial/option.c | 672 ++------------------------------------------ 2 files changed, 27 insertions(+), 646 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index e399efdb91e5..fdc889dc9fd8 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -581,6 +581,7 @@ config USB_SERIAL_WWAN config USB_SERIAL_OPTION tristate "USB driver for GSM and CDMA modems" + select USB_SERIAL_WWAN help Say Y here if you have a GSM or CDMA modem that's connected to USB. diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 6d0dfd7da98c..1775e4554659 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -42,35 +42,14 @@ #include #include #include +#include "usb-wwan.h" /* Function prototypes */ static int option_probe(struct usb_serial *serial, const struct usb_device_id *id); -static int option_open(struct tty_struct *tty, struct usb_serial_port *port); -static void option_close(struct usb_serial_port *port); -static void option_dtr_rts(struct usb_serial_port *port, int on); - -static int option_startup(struct usb_serial *serial); -static void option_disconnect(struct usb_serial *serial); -static void option_release(struct usb_serial *serial); -static int option_write_room(struct tty_struct *tty); - +static int option_send_setup(struct usb_serial_port *port); static void option_instat_callback(struct urb *urb); -static int option_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static int option_chars_in_buffer(struct tty_struct *tty); -static void option_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, struct ktermios *old); -static int option_tiocmget(struct tty_struct *tty, struct file *file); -static int option_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); -static int option_send_setup(struct usb_serial_port *port); -#ifdef CONFIG_PM -static int option_suspend(struct usb_serial *serial, pm_message_t message); -static int option_resume(struct usb_serial *serial); -#endif - /* Vendor and product IDs */ #define OPTION_VENDOR_ID 0x0AF0 #define OPTION_PRODUCT_COLT 0x5000 @@ -757,22 +736,22 @@ static struct usb_serial_driver option_1port_device = { .id_table = option_ids, .num_ports = 1, .probe = option_probe, - .open = option_open, - .close = option_close, - .dtr_rts = option_dtr_rts, - .write = option_write, - .write_room = option_write_room, - .chars_in_buffer = option_chars_in_buffer, - .set_termios = option_set_termios, - .tiocmget = option_tiocmget, - .tiocmset = option_tiocmset, - .attach = option_startup, - .disconnect = option_disconnect, - .release = option_release, + .open = usb_wwan_open, + .close = usb_wwan_close, + .dtr_rts = usb_wwan_dtr_rts, + .write = usb_wwan_write, + .write_room = usb_wwan_write_room, + .chars_in_buffer = usb_wwan_chars_in_buffer, + .set_termios = usb_wwan_set_termios, + .tiocmget = usb_wwan_tiocmget, + .tiocmset = usb_wwan_tiocmset, + .attach = usb_wwan_startup, + .disconnect = usb_wwan_disconnect, + .release = usb_wwan_release, .read_int_callback = option_instat_callback, #ifdef CONFIG_PM - .suspend = option_suspend, - .resume = option_resume, + .suspend = usb_wwan_suspend, + .resume = usb_wwan_resume, #endif }; @@ -785,13 +764,6 @@ static int debug; #define IN_BUFLEN 4096 #define OUT_BUFLEN 4096 -struct option_intf_private { - spinlock_t susp_lock; - unsigned int suspended:1; - int in_flight; - struct option_blacklist_info *blacklist_info; -}; - struct option_port_private { /* Input endpoints and buffer for this port */ struct urb *in_urbs[N_IN_URB]; @@ -848,8 +820,7 @@ module_exit(option_exit); static int option_probe(struct usb_serial *serial, const struct usb_device_id *id) { - struct option_intf_private *data; - + struct usb_wwan_intf_private *data; /* D-Link DWM 652 still exposes CD-Rom emulation interface in modem mode */ if (serial->dev->descriptor.idVendor == DLINK_VENDOR_ID && serial->dev->descriptor.idProduct == DLINK_PRODUCT_DWM_652 && @@ -862,11 +833,13 @@ static int option_probe(struct usb_serial *serial, serial->interface->cur_altsetting->desc.bInterfaceClass != 0xff) return -ENODEV; - data = serial->private = kzalloc(sizeof(struct option_intf_private), GFP_KERNEL); + data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL); + if (!data) return -ENOMEM; + data->send_setup = option_send_setup; spin_lock_init(&data->susp_lock); - data->blacklist_info = (struct option_blacklist_info*) id->driver_info; + data->private = (void *)id->driver_info; return 0; } @@ -887,205 +860,6 @@ static enum option_blacklist_reason is_blacklisted(const u8 ifnum, return OPTION_BLACKLIST_NONE; } -static void option_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, struct ktermios *old_termios) -{ - dbg("%s", __func__); - /* Doesn't support option setting */ - tty_termios_copy_hw(tty->termios, old_termios); - option_send_setup(port); -} - -static int option_tiocmget(struct tty_struct *tty, struct file *file) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned int value; - struct option_port_private *portdata; - - portdata = usb_get_serial_port_data(port); - - value = ((portdata->rts_state) ? TIOCM_RTS : 0) | - ((portdata->dtr_state) ? TIOCM_DTR : 0) | - ((portdata->cts_state) ? TIOCM_CTS : 0) | - ((portdata->dsr_state) ? TIOCM_DSR : 0) | - ((portdata->dcd_state) ? TIOCM_CAR : 0) | - ((portdata->ri_state) ? TIOCM_RNG : 0); - - return value; -} - -static int option_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) -{ - struct usb_serial_port *port = tty->driver_data; - struct option_port_private *portdata; - - portdata = usb_get_serial_port_data(port); - - /* FIXME: what locks portdata fields ? */ - if (set & TIOCM_RTS) - portdata->rts_state = 1; - if (set & TIOCM_DTR) - portdata->dtr_state = 1; - - if (clear & TIOCM_RTS) - portdata->rts_state = 0; - if (clear & TIOCM_DTR) - portdata->dtr_state = 0; - return option_send_setup(port); -} - -/* Write */ -static int option_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct option_port_private *portdata; - struct option_intf_private *intfdata; - int i; - int left, todo; - struct urb *this_urb = NULL; /* spurious */ - int err; - unsigned long flags; - - portdata = usb_get_serial_port_data(port); - intfdata = port->serial->private; - - dbg("%s: write (%d chars)", __func__, count); - - i = 0; - left = count; - for (i = 0; left > 0 && i < N_OUT_URB; i++) { - todo = left; - if (todo > OUT_BUFLEN) - todo = OUT_BUFLEN; - - this_urb = portdata->out_urbs[i]; - if (test_and_set_bit(i, &portdata->out_busy)) { - if (time_before(jiffies, - portdata->tx_start_time[i] + 10 * HZ)) - continue; - usb_unlink_urb(this_urb); - continue; - } - dbg("%s: endpoint %d buf %d", __func__, - usb_pipeendpoint(this_urb->pipe), i); - - err = usb_autopm_get_interface_async(port->serial->interface); - if (err < 0) - break; - - /* send the data */ - memcpy(this_urb->transfer_buffer, buf, todo); - this_urb->transfer_buffer_length = todo; - - spin_lock_irqsave(&intfdata->susp_lock, flags); - if (intfdata->suspended) { - usb_anchor_urb(this_urb, &portdata->delayed); - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - } else { - intfdata->in_flight++; - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - err = usb_submit_urb(this_urb, GFP_ATOMIC); - if (err) { - dbg("usb_submit_urb %p (write bulk) failed " - "(%d)", this_urb, err); - clear_bit(i, &portdata->out_busy); - spin_lock_irqsave(&intfdata->susp_lock, flags); - intfdata->in_flight--; - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - continue; - } - } - - portdata->tx_start_time[i] = jiffies; - buf += todo; - left -= todo; - } - - count -= left; - dbg("%s: wrote (did %d)", __func__, count); - return count; -} - -static void option_indat_callback(struct urb *urb) -{ - int err; - int endpoint; - struct usb_serial_port *port; - struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; - int status = urb->status; - - dbg("%s: %p", __func__, urb); - - endpoint = usb_pipeendpoint(urb->pipe); - port = urb->context; - - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dbg("%s: urb shutting down with status: %d on endpoint %02x.", - __func__, status, endpoint); - return; - default: - dbg("%s: nonzero status: %d on endpoint %02x.", - __func__, status, endpoint); - goto exit; - } - - if (urb->actual_length) { - tty = tty_port_tty_get(&port->port); - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } else - dbg("%s: empty read urb received", __func__); - -exit: - /* Resubmit urb so we continue receiving */ - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err && err != -EPERM) - printk(KERN_ERR "%s: resubmit read urb failed. " - "(%d)", __func__, err); - else - usb_mark_last_busy(port->serial->dev); - - return; -} - -static void option_outdat_callback(struct urb *urb) -{ - struct usb_serial_port *port; - struct option_port_private *portdata; - struct option_intf_private *intfdata; - int i; - - dbg("%s", __func__); - - port = urb->context; - intfdata = port->serial->private; - - usb_serial_port_softint(port); - usb_autopm_put_interface_async(port->serial->interface); - portdata = usb_get_serial_port_data(port); - spin_lock(&intfdata->susp_lock); - intfdata->in_flight--; - spin_unlock(&intfdata->susp_lock); - - for (i = 0; i < N_OUT_URB; ++i) { - if (portdata->out_urbs[i] == urb) { - smp_mb__before_clear_bit(); - clear_bit(i, &portdata->out_busy); - break; - } - } -} - static void option_instat_callback(struct urb *urb) { int err; @@ -1142,183 +916,6 @@ static void option_instat_callback(struct urb *urb) } } -static int option_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct option_port_private *portdata; - int i; - int data_len = 0; - struct urb *this_urb; - - portdata = usb_get_serial_port_data(port); - - for (i = 0; i < N_OUT_URB; i++) { - this_urb = portdata->out_urbs[i]; - if (this_urb && !test_bit(i, &portdata->out_busy)) - data_len += OUT_BUFLEN; - } - - dbg("%s: %d", __func__, data_len); - return data_len; -} - -static int option_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct option_port_private *portdata; - int i; - int data_len = 0; - struct urb *this_urb; - - portdata = usb_get_serial_port_data(port); - - for (i = 0; i < N_OUT_URB; i++) { - this_urb = portdata->out_urbs[i]; - /* FIXME: This locking is insufficient as this_urb may - go unused during the test */ - if (this_urb && test_bit(i, &portdata->out_busy)) - data_len += this_urb->transfer_buffer_length; - } - dbg("%s: %d", __func__, data_len); - return data_len; -} - -static int option_open(struct tty_struct *tty, struct usb_serial_port *port) -{ - struct option_port_private *portdata; - struct option_intf_private *intfdata; - struct usb_serial *serial = port->serial; - int i, err; - struct urb *urb; - - portdata = usb_get_serial_port_data(port); - intfdata = serial->private; - - dbg("%s", __func__); - - /* Start reading from the IN endpoint */ - for (i = 0; i < N_IN_URB; i++) { - urb = portdata->in_urbs[i]; - if (!urb) - continue; - err = usb_submit_urb(urb, GFP_KERNEL); - if (err) { - dbg("%s: submit urb %d failed (%d) %d", - __func__, i, err, - urb->transfer_buffer_length); - } - } - - option_send_setup(port); - - serial->interface->needs_remote_wakeup = 1; - spin_lock_irq(&intfdata->susp_lock); - portdata->opened = 1; - spin_unlock_irq(&intfdata->susp_lock); - usb_autopm_put_interface(serial->interface); - - return 0; -} - -static void option_dtr_rts(struct usb_serial_port *port, int on) -{ - struct usb_serial *serial = port->serial; - struct option_port_private *portdata; - - dbg("%s", __func__); - portdata = usb_get_serial_port_data(port); - mutex_lock(&serial->disc_mutex); - portdata->rts_state = on; - portdata->dtr_state = on; - if (serial->dev) - option_send_setup(port); - mutex_unlock(&serial->disc_mutex); -} - - -static void option_close(struct usb_serial_port *port) -{ - int i; - struct usb_serial *serial = port->serial; - struct option_port_private *portdata; - struct option_intf_private *intfdata = port->serial->private; - - dbg("%s", __func__); - portdata = usb_get_serial_port_data(port); - - if (serial->dev) { - /* Stop reading/writing urbs */ - spin_lock_irq(&intfdata->susp_lock); - portdata->opened = 0; - spin_unlock_irq(&intfdata->susp_lock); - - for (i = 0; i < N_IN_URB; i++) - usb_kill_urb(portdata->in_urbs[i]); - for (i = 0; i < N_OUT_URB; i++) - usb_kill_urb(portdata->out_urbs[i]); - usb_autopm_get_interface(serial->interface); - serial->interface->needs_remote_wakeup = 0; - } -} - -/* Helper functions used by option_setup_urbs */ -static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, - int dir, void *ctx, char *buf, int len, - void (*callback)(struct urb *)) -{ - struct urb *urb; - - if (endpoint == -1) - return NULL; /* endpoint not needed */ - - urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ - if (urb == NULL) { - dbg("%s: alloc for endpoint %d failed.", __func__, endpoint); - return NULL; - } - - /* Fill URB using supplied data. */ - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, endpoint) | dir, - buf, len, callback, ctx); - - return urb; -} - -/* Setup urbs */ -static void option_setup_urbs(struct usb_serial *serial) -{ - int i, j; - struct usb_serial_port *port; - struct option_port_private *portdata; - - dbg("%s", __func__); - - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - - /* Do indat endpoints first */ - for (j = 0; j < N_IN_URB; ++j) { - portdata->in_urbs[j] = option_setup_urb(serial, - port->bulk_in_endpointAddress, - USB_DIR_IN, port, - portdata->in_buffer[j], - IN_BUFLEN, option_indat_callback); - } - - /* outdat endpoints */ - for (j = 0; j < N_OUT_URB; ++j) { - portdata->out_urbs[j] = option_setup_urb(serial, - port->bulk_out_endpointAddress, - USB_DIR_OUT, port, - portdata->out_buffer[j], - OUT_BUFLEN, option_outdat_callback); - } - } -} - - /** send RTS/DTR state to the port. * * This is exactly the same as SET_CONTROL_LINE_STATE from the PSTN @@ -1327,15 +924,16 @@ static void option_setup_urbs(struct usb_serial *serial) static int option_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - struct option_intf_private *intfdata = - (struct option_intf_private *) serial->private; + struct usb_wwan_intf_private *intfdata = + (struct usb_wwan_intf_private *) serial->private; struct option_port_private *portdata; int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber; int val = 0; dbg("%s", __func__); - if (is_blacklisted(ifNum, intfdata->blacklist_info) == - OPTION_BLACKLIST_SENDSETUP) { + if (is_blacklisted(ifNum, + (struct option_blacklist_info *) intfdata->private) + == OPTION_BLACKLIST_SENDSETUP) { dbg("No send_setup on blacklisted interface #%d\n", ifNum); return -EIO; } @@ -1352,224 +950,6 @@ static int option_send_setup(struct usb_serial_port *port) 0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT); } -static int option_startup(struct usb_serial *serial) -{ - int i, j, err; - struct usb_serial_port *port; - struct option_port_private *portdata; - u8 *buffer; - - dbg("%s", __func__); - - /* Now setup per port private data */ - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); - if (!portdata) { - dbg("%s: kmalloc for option_port_private (%d) failed!.", - __func__, i); - return 1; - } - init_usb_anchor(&portdata->delayed); - - for (j = 0; j < N_IN_URB; j++) { - buffer = (u8 *)__get_free_page(GFP_KERNEL); - if (!buffer) - goto bail_out_error; - portdata->in_buffer[j] = buffer; - } - - for (j = 0; j < N_OUT_URB; j++) { - buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL); - if (!buffer) - goto bail_out_error2; - portdata->out_buffer[j] = buffer; - } - - usb_set_serial_port_data(port, portdata); - - if (!port->interrupt_in_urb) - continue; - err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); - if (err) - dbg("%s: submit irq_in urb failed %d", - __func__, err); - } - option_setup_urbs(serial); - return 0; - -bail_out_error2: - for (j = 0; j < N_OUT_URB; j++) - kfree(portdata->out_buffer[j]); -bail_out_error: - for (j = 0; j < N_IN_URB; j++) - if (portdata->in_buffer[j]) - free_page((unsigned long)portdata->in_buffer[j]); - kfree(portdata); - return 1; -} - -static void stop_read_write_urbs(struct usb_serial *serial) -{ - int i, j; - struct usb_serial_port *port; - struct option_port_private *portdata; - - /* Stop reading/writing urbs */ - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - for (j = 0; j < N_IN_URB; j++) - usb_kill_urb(portdata->in_urbs[j]); - for (j = 0; j < N_OUT_URB; j++) - usb_kill_urb(portdata->out_urbs[j]); - } -} - -static void option_disconnect(struct usb_serial *serial) -{ - dbg("%s", __func__); - - stop_read_write_urbs(serial); -} - -static void option_release(struct usb_serial *serial) -{ - int i, j; - struct usb_serial_port *port; - struct option_port_private *portdata; - - dbg("%s", __func__); - - /* Now free them */ - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - - for (j = 0; j < N_IN_URB; j++) { - if (portdata->in_urbs[j]) { - usb_free_urb(portdata->in_urbs[j]); - free_page((unsigned long) - portdata->in_buffer[j]); - portdata->in_urbs[j] = NULL; - } - } - for (j = 0; j < N_OUT_URB; j++) { - if (portdata->out_urbs[j]) { - usb_free_urb(portdata->out_urbs[j]); - kfree(portdata->out_buffer[j]); - portdata->out_urbs[j] = NULL; - } - } - } - - /* Now free per port private data */ - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - kfree(usb_get_serial_port_data(port)); - } -} - -#ifdef CONFIG_PM -static int option_suspend(struct usb_serial *serial, pm_message_t message) -{ - struct option_intf_private *intfdata = serial->private; - int b; - - dbg("%s entered", __func__); - - if (message.event & PM_EVENT_AUTO) { - spin_lock_irq(&intfdata->susp_lock); - b = intfdata->in_flight; - spin_unlock_irq(&intfdata->susp_lock); - - if (b) - return -EBUSY; - } - - spin_lock_irq(&intfdata->susp_lock); - intfdata->suspended = 1; - spin_unlock_irq(&intfdata->susp_lock); - stop_read_write_urbs(serial); - - return 0; -} - -static void play_delayed(struct usb_serial_port *port) -{ - struct option_intf_private *data; - struct option_port_private *portdata; - struct urb *urb; - int err; - - portdata = usb_get_serial_port_data(port); - data = port->serial->private; - while ((urb = usb_get_from_anchor(&portdata->delayed))) { - err = usb_submit_urb(urb, GFP_ATOMIC); - if (!err) - data->in_flight++; - } -} - -static int option_resume(struct usb_serial *serial) -{ - int i, j; - struct usb_serial_port *port; - struct option_intf_private *intfdata = serial->private; - struct option_port_private *portdata; - struct urb *urb; - int err = 0; - - dbg("%s entered", __func__); - /* get the interrupt URBs resubmitted unconditionally */ - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - if (!port->interrupt_in_urb) { - dbg("%s: No interrupt URB for port %d", __func__, i); - continue; - } - err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO); - dbg("Submitted interrupt URB for port %d (result %d)", i, err); - if (err < 0) { - err("%s: Error %d for interrupt URB of port%d", - __func__, err, i); - goto err_out; - } - } - - for (i = 0; i < serial->num_ports; i++) { - /* walk all ports */ - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - - /* skip closed ports */ - spin_lock_irq(&intfdata->susp_lock); - if (!portdata->opened) { - spin_unlock_irq(&intfdata->susp_lock); - continue; - } - - for (j = 0; j < N_IN_URB; j++) { - urb = portdata->in_urbs[j]; - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err < 0) { - err("%s: Error %d for bulk URB %d", - __func__, err, i); - spin_unlock_irq(&intfdata->susp_lock); - goto err_out; - } - } - play_delayed(port); - spin_unlock_irq(&intfdata->susp_lock); - } - spin_lock_irq(&intfdata->susp_lock); - intfdata->suspended = 0; - spin_unlock_irq(&intfdata->susp_lock); -err_out: - return err; -} -#endif - MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_VERSION(DRIVER_VERSION); -- cgit v1.2.3-58-ga151 From 3d7e59ad88fdb6bc50ae9b7e822d4bb5f68b68f9 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 1 Apr 2010 12:31:09 -0400 Subject: USB: qcserial: Use generic USB wwan code Make qcserial use the generic USB wwan code. This should result in a performance improvement. Signed-off-by: Matthew Garrett Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 1 + drivers/usb/serial/qcserial.c | 22 ++++++++++++++++++++++ 2 files changed, 23 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index fdc889dc9fd8..efb6dc7aa450 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -485,6 +485,7 @@ config USB_SERIAL_QCAUX config USB_SERIAL_QUALCOMM tristate "USB Qualcomm Serial modem" + select USB_SERIAL_WWAN help Say Y here if you have a Qualcomm USB modem device. These are usually wireless cellular modems. diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 53a2d5a935a2..9215f6c582c3 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -15,6 +15,8 @@ #include #include #include +#include +#include "usb-wwan.h" #define DRIVER_AUTHOR "Qualcomm Inc" #define DRIVER_DESC "Qualcomm USB Serial driver" @@ -92,6 +94,7 @@ static struct usb_driver qcdriver = { static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) { + struct usb_wwan_intf_private *data; int retval = -ENODEV; __u8 nintf; __u8 ifnum; @@ -103,6 +106,13 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; dbg("This Interface = %d", ifnum); + data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), + GFP_KERNEL); + if (!data) + return -ENOMEM; + + spin_lock_init(&data->susp_lock); + switch (nintf) { case 1: /* QDL mode */ @@ -161,6 +171,18 @@ static struct usb_serial_driver qcdevice = { .usb_driver = &qcdriver, .num_ports = 1, .probe = qcprobe, + .open = usb_wwan_open, + .close = usb_wwan_close, + .write = usb_wwan_write, + .write_room = usb_wwan_write_room, + .chars_in_buffer = usb_wwan_chars_in_buffer, + .attach = usb_wwan_startup, + .disconnect = usb_wwan_disconnect, + .release = usb_wwan_release, +#ifdef CONFIG_PM + .suspend = usb_wwan_suspend, + .resume = usb_wwan_resume, +#endif }; static int __init qcinit(void) -- cgit v1.2.3-58-ga151 From e07896e62abbf7a741a5cd5b25ba7637bdf91ad0 Mon Sep 17 00:00:00 2001 From: Anssi Hannula Date: Thu, 1 Apr 2010 12:31:10 -0400 Subject: USB: qcserial: Add support for Qualcomm Gobi 2000 devices Add ids for Qualcomm Gobi 2000 QDL and Modem modes. Gobi 2000 has a single altsetting in QDL mode, so adapt code to handle that. Firmware upload protocol is also slightly different, with an additional firmware file. However, qcserial doesn't handle firmware uploading. Tested on Lenovo Thinkpad T510. Signed-off-by: Anssi Hannula Signed-off-by: Matthew Garrett Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 42 +++++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 9215f6c582c3..04bb759536bb 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -78,6 +78,8 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */ {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */ + {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */ + {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */ { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table); @@ -95,6 +97,7 @@ static struct usb_driver qcdriver = { static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) { struct usb_wwan_intf_private *data; + struct usb_host_interface *intf = serial->interface->cur_altsetting; int retval = -ENODEV; __u8 nintf; __u8 ifnum; @@ -103,7 +106,7 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) nintf = serial->dev->actconfig->desc.bNumInterfaces; dbg("Num Interfaces = %d", nintf); - ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; + ifnum = intf->desc.bInterfaceNumber; dbg("This Interface = %d", ifnum); data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), @@ -116,27 +119,32 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) switch (nintf) { case 1: /* QDL mode */ - if (serial->interface->num_altsetting == 2) { - struct usb_host_interface *intf; - + /* Gobi 2000 has a single altsetting, older ones have two */ + if (serial->interface->num_altsetting == 2) intf = &serial->interface->altsetting[1]; - if (intf->desc.bNumEndpoints == 2) { - if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && - usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { - dbg("QDL port found"); - retval = usb_set_interface(serial->dev, ifnum, 1); - if (retval < 0) { - dev_err(&serial->dev->dev, - "Could not set interface, error %d\n", - retval); - retval = -ENODEV; - } - return retval; - } + else if (serial->interface->num_altsetting > 2) + break; + + if (intf->desc.bNumEndpoints == 2 && + usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && + usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { + dbg("QDL port found"); + + if (serial->interface->num_altsetting == 1) + return 0; + + retval = usb_set_interface(serial->dev, ifnum, 1); + if (retval < 0) { + dev_err(&serial->dev->dev, + "Could not set interface, error %d\n", + retval); + retval = -ENODEV; } + return retval; } break; + case 3: case 4: /* Composite mode */ if (ifnum == 2) { -- cgit v1.2.3-58-ga151 From 8df75f42f8e67e2851cdcf6da91640fb881defd1 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Fri, 2 Apr 2010 15:34:16 -0700 Subject: USB: xhci: Add memory allocation for USB3 bulk streams. Add support for allocating streams for USB 3.0 bulk endpoints. See Documentation/usb/bulk-streams.txt for more information about how and why you would use streams. When an endpoint has streams enabled, instead of having one ring where all transfers are enqueued to the hardware, it has several rings. The ring dequeue pointer in the endpoint context is changed to point to a "Stream Context Array". This is basically an array of pointers to transfer rings, one for each stream ID that the driver wants to use. The Stream Context Array size must be a power of two, and host controllers can place a limit on the size of the array (4 to 2^16 entries). These two facts make calculating the size of the Stream Context Array and the number of entries actually used by the driver a bit tricky. Besides the Stream Context Array and rings for all the stream IDs, we need one more data structure. The xHCI hardware will not tell us which stream ID a transfer event was for, but it will give us the slot ID, endpoint index, and physical address for the TRB that caused the event. For every endpoint on a device, add a radix tree to map physical TRB addresses to virtual segments within a stream ring. Keep track of whether an endpoint is transitioning to using streams, and don't enqueue any URBs while that's taking place. Refuse to transition an endpoint to streams if there are already URBs enqueued for that endpoint. We need to make sure that freeing streams does not fail, since a driver's disconnect() function may attempt to do this, and it cannot fail. Pre-allocate the command structure used to issue the Configure Endpoint command, and reserve space on the command ring for each stream endpoint. This may be a bit overkill, but it is permissible for the driver to allocate all streams in one call and free them in multiple calls. (It is not advised, however, since it is a waste of resources and time.) Even with the memory and ring room pre-allocated, freeing streams can still fail because the xHC rejects the configure endpoint command. It is valid (by the xHCI 0.96 spec) to return a "Bandwidth Error" or a "Resource Error" for a configure endpoint command. We should never see a Bandwidth Error, since bulk endpoints do not effect the reserved bandwidth. The host controller can still return a Resource Error, but it's improbable since the xHC would be going from a more resource-intensive configuration (streams) to a less resource-intensive configuration (no streams). If the xHC returns a Resource Error, the endpoint will be stuck with streams and will be unusable for drivers. It's an unavoidable consequence of broken host controller hardware. Includes bug fixes from the original patch, contributed by John Youn and Andy Green Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 379 +++++++++++++++++++++++++++++++++++++++- drivers/usb/host/xhci-ring.c | 9 +- drivers/usb/host/xhci.c | 399 ++++++++++++++++++++++++++++++++++++++++++- drivers/usb/host/xhci.h | 84 ++++++++- 4 files changed, 857 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index d64f5724bfc4..d299ffad806b 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -304,6 +304,350 @@ struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, (ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params))); } + +/***************** Streams structures manipulation *************************/ + +void xhci_free_stream_ctx(struct xhci_hcd *xhci, + unsigned int num_stream_ctxs, + struct xhci_stream_ctx *stream_ctx, dma_addr_t dma) +{ + struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + + if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) + pci_free_consistent(pdev, + sizeof(struct xhci_stream_ctx)*num_stream_ctxs, + stream_ctx, dma); + else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) + return dma_pool_free(xhci->small_streams_pool, + stream_ctx, dma); + else + return dma_pool_free(xhci->medium_streams_pool, + stream_ctx, dma); +} + +/* + * The stream context array for each endpoint with bulk streams enabled can + * vary in size, based on: + * - how many streams the endpoint supports, + * - the maximum primary stream array size the host controller supports, + * - and how many streams the device driver asks for. + * + * The stream context array must be a power of 2, and can be as small as + * 64 bytes or as large as 1MB. + */ +struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, + unsigned int num_stream_ctxs, dma_addr_t *dma, + gfp_t mem_flags) +{ + struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + + if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) + return pci_alloc_consistent(pdev, + sizeof(struct xhci_stream_ctx)*num_stream_ctxs, + dma); + else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) + return dma_pool_alloc(xhci->small_streams_pool, + mem_flags, dma); + else + return dma_pool_alloc(xhci->medium_streams_pool, + mem_flags, dma); +} + +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING +struct xhci_ring *dma_to_stream_ring( + struct xhci_stream_info *stream_info, + u64 address) +{ + return radix_tree_lookup(&stream_info->trb_address_map, + address >> SEGMENT_SHIFT); +} +#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ + +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING +static int xhci_test_radix_tree(struct xhci_hcd *xhci, + unsigned int num_streams, + struct xhci_stream_info *stream_info) +{ + u32 cur_stream; + struct xhci_ring *cur_ring; + u64 addr; + + for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { + struct xhci_ring *mapped_ring; + int trb_size = sizeof(union xhci_trb); + + cur_ring = stream_info->stream_rings[cur_stream]; + for (addr = cur_ring->first_seg->dma; + addr < cur_ring->first_seg->dma + SEGMENT_SIZE; + addr += trb_size) { + mapped_ring = dma_to_stream_ring(stream_info, addr); + if (cur_ring != mapped_ring) { + xhci_warn(xhci, "WARN: DMA address 0x%08llx " + "didn't map to stream ID %u; " + "mapped to ring %p\n", + (unsigned long long) addr, + cur_stream, + mapped_ring); + return -EINVAL; + } + } + /* One TRB after the end of the ring segment shouldn't return a + * pointer to the current ring (although it may be a part of a + * different ring). + */ + mapped_ring = dma_to_stream_ring(stream_info, addr); + if (mapped_ring != cur_ring) { + /* One TRB before should also fail */ + addr = cur_ring->first_seg->dma - trb_size; + mapped_ring = dma_to_stream_ring(stream_info, addr); + } + if (mapped_ring == cur_ring) { + xhci_warn(xhci, "WARN: Bad DMA address 0x%08llx " + "mapped to valid stream ID %u; " + "mapped ring = %p\n", + (unsigned long long) addr, + cur_stream, + mapped_ring); + return -EINVAL; + } + } + return 0; +} +#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ + +/* + * Change an endpoint's internal structure so it supports stream IDs. The + * number of requested streams includes stream 0, which cannot be used by device + * drivers. + * + * The number of stream contexts in the stream context array may be bigger than + * the number of streams the driver wants to use. This is because the number of + * stream context array entries must be a power of two. + * + * We need a radix tree for mapping physical addresses of TRBs to which stream + * ID they belong to. We need to do this because the host controller won't tell + * us which stream ring the TRB came from. We could store the stream ID in an + * event data TRB, but that doesn't help us for the cancellation case, since the + * endpoint may stop before it reaches that event data TRB. + * + * The radix tree maps the upper portion of the TRB DMA address to a ring + * segment that has the same upper portion of DMA addresses. For example, say I + * have segments of size 1KB, that are always 64-byte aligned. A segment may + * start at 0x10c91000 and end at 0x10c913f0. If I use the upper 10 bits, the + * key to the stream ID is 0x43244. I can use the DMA address of the TRB to + * pass the radix tree a key to get the right stream ID: + * + * 0x10c90fff >> 10 = 0x43243 + * 0x10c912c0 >> 10 = 0x43244 + * 0x10c91400 >> 10 = 0x43245 + * + * Obviously, only those TRBs with DMA addresses that are within the segment + * will make the radix tree return the stream ID for that ring. + * + * Caveats for the radix tree: + * + * The radix tree uses an unsigned long as a key pair. On 32-bit systems, an + * unsigned long will be 32-bits; on a 64-bit system an unsigned long will be + * 64-bits. Since we only request 32-bit DMA addresses, we can use that as the + * key on 32-bit or 64-bit systems (it would also be fine if we asked for 64-bit + * PCI DMA addresses on a 64-bit system). There might be a problem on 32-bit + * extended systems (where the DMA address can be bigger than 32-bits), + * if we allow the PCI dma mask to be bigger than 32-bits. So don't do that. + */ +struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, + unsigned int num_stream_ctxs, + unsigned int num_streams, gfp_t mem_flags) +{ + struct xhci_stream_info *stream_info; + u32 cur_stream; + struct xhci_ring *cur_ring; + unsigned long key; + u64 addr; + int ret; + + xhci_dbg(xhci, "Allocating %u streams and %u " + "stream context array entries.\n", + num_streams, num_stream_ctxs); + if (xhci->cmd_ring_reserved_trbs == MAX_RSVD_CMD_TRBS) { + xhci_dbg(xhci, "Command ring has no reserved TRBs available\n"); + return NULL; + } + xhci->cmd_ring_reserved_trbs++; + + stream_info = kzalloc(sizeof(struct xhci_stream_info), mem_flags); + if (!stream_info) + goto cleanup_trbs; + + stream_info->num_streams = num_streams; + stream_info->num_stream_ctxs = num_stream_ctxs; + + /* Initialize the array of virtual pointers to stream rings. */ + stream_info->stream_rings = kzalloc( + sizeof(struct xhci_ring *)*num_streams, + mem_flags); + if (!stream_info->stream_rings) + goto cleanup_info; + + /* Initialize the array of DMA addresses for stream rings for the HW. */ + stream_info->stream_ctx_array = xhci_alloc_stream_ctx(xhci, + num_stream_ctxs, &stream_info->ctx_array_dma, + mem_flags); + if (!stream_info->stream_ctx_array) + goto cleanup_ctx; + memset(stream_info->stream_ctx_array, 0, + sizeof(struct xhci_stream_ctx)*num_stream_ctxs); + + /* Allocate everything needed to free the stream rings later */ + stream_info->free_streams_command = + xhci_alloc_command(xhci, true, true, mem_flags); + if (!stream_info->free_streams_command) + goto cleanup_ctx; + + INIT_RADIX_TREE(&stream_info->trb_address_map, GFP_ATOMIC); + + /* Allocate rings for all the streams that the driver will use, + * and add their segment DMA addresses to the radix tree. + * Stream 0 is reserved. + */ + for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { + stream_info->stream_rings[cur_stream] = + xhci_ring_alloc(xhci, 1, true, mem_flags); + cur_ring = stream_info->stream_rings[cur_stream]; + if (!cur_ring) + goto cleanup_rings; + /* Set deq ptr, cycle bit, and stream context type */ + addr = cur_ring->first_seg->dma | + SCT_FOR_CTX(SCT_PRI_TR) | + cur_ring->cycle_state; + stream_info->stream_ctx_array[cur_stream].stream_ring = addr; + xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n", + cur_stream, (unsigned long long) addr); + + key = (unsigned long) + (cur_ring->first_seg->dma >> SEGMENT_SHIFT); + ret = radix_tree_insert(&stream_info->trb_address_map, + key, cur_ring); + if (ret) { + xhci_ring_free(xhci, cur_ring); + stream_info->stream_rings[cur_stream] = NULL; + goto cleanup_rings; + } + } + /* Leave the other unused stream ring pointers in the stream context + * array initialized to zero. This will cause the xHC to give us an + * error if the device asks for a stream ID we don't have setup (if it + * was any other way, the host controller would assume the ring is + * "empty" and wait forever for data to be queued to that stream ID). + */ +#if XHCI_DEBUG + /* Do a little test on the radix tree to make sure it returns the + * correct values. + */ + if (xhci_test_radix_tree(xhci, num_streams, stream_info)) + goto cleanup_rings; +#endif + + return stream_info; + +cleanup_rings: + for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { + cur_ring = stream_info->stream_rings[cur_stream]; + if (cur_ring) { + addr = cur_ring->first_seg->dma; + radix_tree_delete(&stream_info->trb_address_map, + addr >> SEGMENT_SHIFT); + xhci_ring_free(xhci, cur_ring); + stream_info->stream_rings[cur_stream] = NULL; + } + } + xhci_free_command(xhci, stream_info->free_streams_command); +cleanup_ctx: + kfree(stream_info->stream_rings); +cleanup_info: + kfree(stream_info); +cleanup_trbs: + xhci->cmd_ring_reserved_trbs--; + return NULL; +} +/* + * Sets the MaxPStreams field and the Linear Stream Array field. + * Sets the dequeue pointer to the stream context array. + */ +void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, + struct xhci_ep_ctx *ep_ctx, + struct xhci_stream_info *stream_info) +{ + u32 max_primary_streams; + /* MaxPStreams is the number of stream context array entries, not the + * number we're actually using. Must be in 2^(MaxPstreams + 1) format. + * fls(0) = 0, fls(0x1) = 1, fls(0x10) = 2, fls(0x100) = 3, etc. + */ + max_primary_streams = fls(stream_info->num_stream_ctxs) - 2; + xhci_dbg(xhci, "Setting number of stream ctx array entries to %u\n", + 1 << (max_primary_streams + 1)); + ep_ctx->ep_info &= ~EP_MAXPSTREAMS_MASK; + ep_ctx->ep_info |= EP_MAXPSTREAMS(max_primary_streams); + ep_ctx->ep_info |= EP_HAS_LSA; + ep_ctx->deq = stream_info->ctx_array_dma; +} + +/* + * Sets the MaxPStreams field and the Linear Stream Array field to 0. + * Reinstalls the "normal" endpoint ring (at its previous dequeue mark, + * not at the beginning of the ring). + */ +void xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, + struct xhci_ep_ctx *ep_ctx, + struct xhci_virt_ep *ep) +{ + dma_addr_t addr; + ep_ctx->ep_info &= ~EP_MAXPSTREAMS_MASK; + ep_ctx->ep_info &= ~EP_HAS_LSA; + addr = xhci_trb_virt_to_dma(ep->ring->deq_seg, ep->ring->dequeue); + ep_ctx->deq = addr | ep->ring->cycle_state; +} + +/* Frees all stream contexts associated with the endpoint, + * + * Caller should fix the endpoint context streams fields. + */ +void xhci_free_stream_info(struct xhci_hcd *xhci, + struct xhci_stream_info *stream_info) +{ + int cur_stream; + struct xhci_ring *cur_ring; + dma_addr_t addr; + + if (!stream_info) + return; + + for (cur_stream = 1; cur_stream < stream_info->num_streams; + cur_stream++) { + cur_ring = stream_info->stream_rings[cur_stream]; + if (cur_ring) { + addr = cur_ring->first_seg->dma; + radix_tree_delete(&stream_info->trb_address_map, + addr >> SEGMENT_SHIFT); + xhci_ring_free(xhci, cur_ring); + stream_info->stream_rings[cur_stream] = NULL; + } + } + xhci_free_command(xhci, stream_info->free_streams_command); + xhci->cmd_ring_reserved_trbs--; + if (stream_info->stream_ctx_array) + xhci_free_stream_ctx(xhci, + stream_info->num_stream_ctxs, + stream_info->stream_ctx_array, + stream_info->ctx_array_dma); + + if (stream_info) + kfree(stream_info->stream_rings); + kfree(stream_info); +} + + +/***************** Device context manipulation *************************/ + static void xhci_init_endpoint_timer(struct xhci_hcd *xhci, struct xhci_virt_ep *ep) { @@ -328,9 +672,13 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) if (!dev) return; - for (i = 0; i < 31; ++i) + for (i = 0; i < 31; ++i) { if (dev->eps[i].ring) xhci_ring_free(xhci, dev->eps[i].ring); + if (dev->eps[i].stream_info) + xhci_free_stream_info(xhci, + dev->eps[i].stream_info); + } if (dev->ring_cache) { for (i = 0; i < dev->num_rings_cached; i++) @@ -655,6 +1003,9 @@ static inline u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci, return max_packet * (max_burst + 1); } +/* Set up an endpoint with one ring segment. Do not allocate stream rings. + * Drivers will have to call usb_alloc_streams() to do that. + */ int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *udev, @@ -1003,6 +1354,16 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) xhci->device_pool = NULL; xhci_dbg(xhci, "Freed device context pool\n"); + if (xhci->small_streams_pool) + dma_pool_destroy(xhci->small_streams_pool); + xhci->small_streams_pool = NULL; + xhci_dbg(xhci, "Freed small stream array pool\n"); + + if (xhci->medium_streams_pool) + dma_pool_destroy(xhci->medium_streams_pool); + xhci->medium_streams_pool = NULL; + xhci_dbg(xhci, "Freed medium stream array pool\n"); + xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr); if (xhci->dcbaa) pci_free_consistent(pdev, sizeof(*xhci->dcbaa), @@ -1239,6 +1600,22 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) if (!xhci->segment_pool || !xhci->device_pool) goto fail; + /* Linear stream context arrays don't have any boundary restrictions, + * and only need to be 16-byte aligned. + */ + xhci->small_streams_pool = + dma_pool_create("xHCI 256 byte stream ctx arrays", + dev, SMALL_STREAM_ARRAY_SIZE, 16, 0); + xhci->medium_streams_pool = + dma_pool_create("xHCI 1KB stream ctx arrays", + dev, MEDIUM_STREAM_ARRAY_SIZE, 16, 0); + /* Any stream context array bigger than MEDIUM_STREAM_ARRAY_SIZE + * will be allocated with pci_alloc_consistent() + */ + + if (!xhci->small_streams_pool || !xhci->medium_streams_pool) + goto fail; + /* Set up the command ring to have one segments for now. */ xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags); if (!xhci->cmd_ring) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index c1359ed310b5..a14f657e279b 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -323,6 +323,10 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci, ep_state = ep->ep_state; /* Don't ring the doorbell for this endpoint if there are pending * cancellations because the we don't want to interrupt processing. + * We don't want to restart any stream rings if there's a set dequeue + * pointer command pending because the device can choose to start any + * stream once the endpoint is on the HW schedule. + * FIXME - check all the stream rings for pending cancellations. */ if (!(ep_state & EP_HALT_PENDING) && !(ep_state & SET_DEQ_PENDING) && !(ep_state & EP_HALTED)) { @@ -916,8 +920,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, * Configure endpoint commands can come from the USB core * configuration or alt setting changes, or because the HW * needed an extra configure endpoint command after a reset - * endpoint command. In the latter case, the xHCI driver is - * not waiting on the configure endpoint command. + * endpoint command or streams were being configured. + * If the command was for a halted endpoint, the xHCI driver + * is not waiting on the configure endpoint command. */ ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 077dfcd57dc9..2e370fea9590 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -21,6 +21,7 @@ */ #include +#include #include #include #include @@ -726,8 +727,21 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) spin_lock_irqsave(&xhci->lock, flags); if (xhci->xhc_state & XHCI_STATE_DYING) goto dying; - ret = xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, - slot_id, ep_index); + if (xhci->devs[slot_id]->eps[ep_index].ep_state & + EP_GETTING_STREAMS) { + xhci_warn(xhci, "WARN: Can't enqueue URB while bulk ep " + "is transitioning to using streams.\n"); + ret = -EINVAL; + } else if (xhci->devs[slot_id]->eps[ep_index].ep_state & + EP_GETTING_NO_STREAMS) { + xhci_warn(xhci, "WARN: Can't enqueue URB while bulk ep " + "is transitioning to " + "not having streams.\n"); + ret = -EINVAL; + } else { + ret = xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, + slot_id, ep_index); + } spin_unlock_irqrestore(&xhci->lock, flags); } else if (usb_endpoint_xfer_int(&urb->ep->desc)) { spin_lock_irqsave(&xhci->lock, flags); @@ -1446,6 +1460,387 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, xhci_warn(xhci, "FIXME allocate a new ring segment\n"); } +static int xhci_check_streams_endpoint(struct xhci_hcd *xhci, + struct usb_device *udev, struct usb_host_endpoint *ep, + unsigned int slot_id) +{ + int ret; + unsigned int ep_index; + unsigned int ep_state; + + if (!ep) + return -EINVAL; + ret = xhci_check_args(xhci_to_hcd(xhci), udev, ep, 1, __func__); + if (ret <= 0) + return -EINVAL; + if (!ep->ss_ep_comp) { + xhci_warn(xhci, "WARN: No SuperSpeed Endpoint Companion" + " descriptor for ep 0x%x\n", + ep->desc.bEndpointAddress); + return -EINVAL; + } + if (ep->ss_ep_comp->desc.bmAttributes == 0) { + xhci_warn(xhci, "WARN: SuperSpeed Endpoint Companion" + " descriptor for ep 0x%x does not support streams\n", + ep->desc.bEndpointAddress); + return -EINVAL; + } + + ep_index = xhci_get_endpoint_index(&ep->desc); + ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; + if (ep_state & EP_HAS_STREAMS || + ep_state & EP_GETTING_STREAMS) { + xhci_warn(xhci, "WARN: SuperSpeed bulk endpoint 0x%x " + "already has streams set up.\n", + ep->desc.bEndpointAddress); + xhci_warn(xhci, "Send email to xHCI maintainer and ask for " + "dynamic stream context array reallocation.\n"); + return -EINVAL; + } + if (!list_empty(&xhci->devs[slot_id]->eps[ep_index].ring->td_list)) { + xhci_warn(xhci, "Cannot setup streams for SuperSpeed bulk " + "endpoint 0x%x; URBs are pending.\n", + ep->desc.bEndpointAddress); + return -EINVAL; + } + return 0; +} + +static void xhci_calculate_streams_entries(struct xhci_hcd *xhci, + unsigned int *num_streams, unsigned int *num_stream_ctxs) +{ + unsigned int max_streams; + + /* The stream context array size must be a power of two */ + *num_stream_ctxs = roundup_pow_of_two(*num_streams); + /* + * Find out how many primary stream array entries the host controller + * supports. Later we may use secondary stream arrays (similar to 2nd + * level page entries), but that's an optional feature for xHCI host + * controllers. xHCs must support at least 4 stream IDs. + */ + max_streams = HCC_MAX_PSA(xhci->hcc_params); + if (*num_stream_ctxs > max_streams) { + xhci_dbg(xhci, "xHCI HW only supports %u stream ctx entries.\n", + max_streams); + *num_stream_ctxs = max_streams; + *num_streams = max_streams; + } +} + +/* Returns an error code if one of the endpoint already has streams. + * This does not change any data structures, it only checks and gathers + * information. + */ +static int xhci_calculate_streams_and_bitmask(struct xhci_hcd *xhci, + struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int *num_streams, u32 *changed_ep_bitmask) +{ + struct usb_host_ss_ep_comp *ss_ep_comp; + unsigned int max_streams; + unsigned int endpoint_flag; + int i; + int ret; + + for (i = 0; i < num_eps; i++) { + ret = xhci_check_streams_endpoint(xhci, udev, + eps[i], udev->slot_id); + if (ret < 0) + return ret; + + ss_ep_comp = eps[i]->ss_ep_comp; + max_streams = USB_SS_MAX_STREAMS(ss_ep_comp->desc.bmAttributes); + if (max_streams < (*num_streams - 1)) { + xhci_dbg(xhci, "Ep 0x%x only supports %u stream IDs.\n", + eps[i]->desc.bEndpointAddress, + max_streams); + *num_streams = max_streams+1; + } + + endpoint_flag = xhci_get_endpoint_flag(&eps[i]->desc); + if (*changed_ep_bitmask & endpoint_flag) + return -EINVAL; + *changed_ep_bitmask |= endpoint_flag; + } + return 0; +} + +static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci, + struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps) +{ + u32 changed_ep_bitmask = 0; + unsigned int slot_id; + unsigned int ep_index; + unsigned int ep_state; + int i; + + slot_id = udev->slot_id; + if (!xhci->devs[slot_id]) + return 0; + + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; + /* Are streams already being freed for the endpoint? */ + if (ep_state & EP_GETTING_NO_STREAMS) { + xhci_warn(xhci, "WARN Can't disable streams for " + "endpoint 0x%x\n, " + "streams are being disabled already.", + eps[i]->desc.bEndpointAddress); + return 0; + } + /* Are there actually any streams to free? */ + if (!(ep_state & EP_HAS_STREAMS) && + !(ep_state & EP_GETTING_STREAMS)) { + xhci_warn(xhci, "WARN Can't disable streams for " + "endpoint 0x%x\n, " + "streams are already disabled!", + eps[i]->desc.bEndpointAddress); + xhci_warn(xhci, "WARN xhci_free_streams() called " + "with non-streams endpoint\n"); + return 0; + } + changed_ep_bitmask |= xhci_get_endpoint_flag(&eps[i]->desc); + } + return changed_ep_bitmask; +} + +/* + * The USB device drivers use this function (though the HCD interface in USB + * core) to prepare a set of bulk endpoints to use streams. Streams are used to + * coordinate mass storage command queueing across multiple endpoints (basically + * a stream ID == a task ID). + * + * Setting up streams involves allocating the same size stream context array + * for each endpoint and issuing a configure endpoint command for all endpoints. + * + * Don't allow the call to succeed if one endpoint only supports one stream + * (which means it doesn't support streams at all). + * + * Drivers may get less stream IDs than they asked for, if the host controller + * hardware or endpoints claim they can't support the number of requested + * stream IDs. + */ +int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags) +{ + int i, ret; + struct xhci_hcd *xhci; + struct xhci_virt_device *vdev; + struct xhci_command *config_cmd; + unsigned int ep_index; + unsigned int num_stream_ctxs; + unsigned long flags; + u32 changed_ep_bitmask = 0; + + if (!eps) + return -EINVAL; + + /* Add one to the number of streams requested to account for + * stream 0 that is reserved for xHCI usage. + */ + num_streams += 1; + xhci = hcd_to_xhci(hcd); + xhci_dbg(xhci, "Driver wants %u stream IDs (including stream 0).\n", + num_streams); + + config_cmd = xhci_alloc_command(xhci, true, true, mem_flags); + if (!config_cmd) { + xhci_dbg(xhci, "Could not allocate xHCI command structure.\n"); + return -ENOMEM; + } + + /* Check to make sure all endpoints are not already configured for + * streams. While we're at it, find the maximum number of streams that + * all the endpoints will support and check for duplicate endpoints. + */ + spin_lock_irqsave(&xhci->lock, flags); + ret = xhci_calculate_streams_and_bitmask(xhci, udev, eps, + num_eps, &num_streams, &changed_ep_bitmask); + if (ret < 0) { + xhci_free_command(xhci, config_cmd); + spin_unlock_irqrestore(&xhci->lock, flags); + return ret; + } + if (num_streams <= 1) { + xhci_warn(xhci, "WARN: endpoints can't handle " + "more than one stream.\n"); + xhci_free_command(xhci, config_cmd); + spin_unlock_irqrestore(&xhci->lock, flags); + return -EINVAL; + } + vdev = xhci->devs[udev->slot_id]; + /* Mark each endpoint as being in transistion, so + * xhci_urb_enqueue() will reject all URBs. + */ + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + vdev->eps[ep_index].ep_state |= EP_GETTING_STREAMS; + } + spin_unlock_irqrestore(&xhci->lock, flags); + + /* Setup internal data structures and allocate HW data structures for + * streams (but don't install the HW structures in the input context + * until we're sure all memory allocation succeeded). + */ + xhci_calculate_streams_entries(xhci, &num_streams, &num_stream_ctxs); + xhci_dbg(xhci, "Need %u stream ctx entries for %u stream IDs.\n", + num_stream_ctxs, num_streams); + + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + vdev->eps[ep_index].stream_info = xhci_alloc_stream_info(xhci, + num_stream_ctxs, + num_streams, mem_flags); + if (!vdev->eps[ep_index].stream_info) + goto cleanup; + /* Set maxPstreams in endpoint context and update deq ptr to + * point to stream context array. FIXME + */ + } + + /* Set up the input context for a configure endpoint command. */ + for (i = 0; i < num_eps; i++) { + struct xhci_ep_ctx *ep_ctx; + + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + ep_ctx = xhci_get_ep_ctx(xhci, config_cmd->in_ctx, ep_index); + + xhci_endpoint_copy(xhci, config_cmd->in_ctx, + vdev->out_ctx, ep_index); + xhci_setup_streams_ep_input_ctx(xhci, ep_ctx, + vdev->eps[ep_index].stream_info); + } + /* Tell the HW to drop its old copy of the endpoint context info + * and add the updated copy from the input context. + */ + xhci_setup_input_ctx_for_config_ep(xhci, config_cmd->in_ctx, + vdev->out_ctx, changed_ep_bitmask, changed_ep_bitmask); + + /* Issue and wait for the configure endpoint command */ + ret = xhci_configure_endpoint(xhci, udev, config_cmd, + false, false); + + /* xHC rejected the configure endpoint command for some reason, so we + * leave the old ring intact and free our internal streams data + * structure. + */ + if (ret < 0) + goto cleanup; + + spin_lock_irqsave(&xhci->lock, flags); + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + vdev->eps[ep_index].ep_state &= ~EP_GETTING_STREAMS; + xhci_dbg(xhci, "Slot %u ep ctx %u now has streams.\n", + udev->slot_id, ep_index); + vdev->eps[ep_index].ep_state |= EP_HAS_STREAMS; + } + xhci_free_command(xhci, config_cmd); + spin_unlock_irqrestore(&xhci->lock, flags); + + /* Subtract 1 for stream 0, which drivers can't use */ + return num_streams - 1; + +cleanup: + /* If it didn't work, free the streams! */ + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + xhci_free_stream_info(xhci, vdev->eps[ep_index].stream_info); + /* FIXME Unset maxPstreams in endpoint context and + * update deq ptr to point to normal string ring. + */ + vdev->eps[ep_index].ep_state &= ~EP_GETTING_STREAMS; + vdev->eps[ep_index].ep_state &= ~EP_HAS_STREAMS; + xhci_endpoint_zero(xhci, vdev, eps[i]); + } + xhci_free_command(xhci, config_cmd); + return -ENOMEM; +} + +/* Transition the endpoint from using streams to being a "normal" endpoint + * without streams. + * + * Modify the endpoint context state, submit a configure endpoint command, + * and free all endpoint rings for streams if that completes successfully. + */ +int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags) +{ + int i, ret; + struct xhci_hcd *xhci; + struct xhci_virt_device *vdev; + struct xhci_command *command; + unsigned int ep_index; + unsigned long flags; + u32 changed_ep_bitmask; + + xhci = hcd_to_xhci(hcd); + vdev = xhci->devs[udev->slot_id]; + + /* Set up a configure endpoint command to remove the streams rings */ + spin_lock_irqsave(&xhci->lock, flags); + changed_ep_bitmask = xhci_calculate_no_streams_bitmask(xhci, + udev, eps, num_eps); + if (changed_ep_bitmask == 0) { + spin_unlock_irqrestore(&xhci->lock, flags); + return -EINVAL; + } + + /* Use the xhci_command structure from the first endpoint. We may have + * allocated too many, but the driver may call xhci_free_streams() for + * each endpoint it grouped into one call to xhci_alloc_streams(). + */ + ep_index = xhci_get_endpoint_index(&eps[0]->desc); + command = vdev->eps[ep_index].stream_info->free_streams_command; + for (i = 0; i < num_eps; i++) { + struct xhci_ep_ctx *ep_ctx; + + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + ep_ctx = xhci_get_ep_ctx(xhci, command->in_ctx, ep_index); + xhci->devs[udev->slot_id]->eps[ep_index].ep_state |= + EP_GETTING_NO_STREAMS; + + xhci_endpoint_copy(xhci, command->in_ctx, + vdev->out_ctx, ep_index); + xhci_setup_no_streams_ep_input_ctx(xhci, ep_ctx, + &vdev->eps[ep_index]); + } + xhci_setup_input_ctx_for_config_ep(xhci, command->in_ctx, + vdev->out_ctx, changed_ep_bitmask, changed_ep_bitmask); + spin_unlock_irqrestore(&xhci->lock, flags); + + /* Issue and wait for the configure endpoint command, + * which must succeed. + */ + ret = xhci_configure_endpoint(xhci, udev, command, + false, true); + + /* xHC rejected the configure endpoint command for some reason, so we + * leave the streams rings intact. + */ + if (ret < 0) + return ret; + + spin_lock_irqsave(&xhci->lock, flags); + for (i = 0; i < num_eps; i++) { + ep_index = xhci_get_endpoint_index(&eps[i]->desc); + xhci_free_stream_info(xhci, vdev->eps[ep_index].stream_info); + /* FIXME Unset maxPstreams in endpoint context and + * update deq ptr to point to normal string ring. + */ + vdev->eps[ep_index].ep_state &= ~EP_GETTING_NO_STREAMS; + vdev->eps[ep_index].ep_state &= ~EP_HAS_STREAMS; + } + spin_unlock_irqrestore(&xhci->lock, flags); + + return 0; +} + /* * This submits a Reset Device Command, which will set the device state to 0, * set the device address to 0, and disable all the endpoints except the default diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index a7c4e1122902..7a9447cb6ea9 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -117,7 +117,7 @@ struct xhci_cap_regs { /* true: no secondary Stream ID Support */ #define HCC_NSS(p) ((p) & (1 << 7)) /* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */ -#define HCC_MAX_PSA (1 << ((((p) >> 12) & 0xf) + 1)) +#define HCC_MAX_PSA(p) (1 << ((((p) >> 12) & 0xf) + 1)) /* Extended Capabilities pointer from PCI base - section 5.3.6 */ #define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p) @@ -585,6 +585,10 @@ struct xhci_ep_ctx { /* Interval - period between requests to an endpoint - 125u increments. */ #define EP_INTERVAL(p) ((p & 0xff) << 16) #define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff)) +#define EP_MAXPSTREAMS_MASK (0x1f << 10) +#define EP_MAXPSTREAMS(p) (((p) << 10) & EP_MAXPSTREAMS_MASK) +/* Endpoint is set up with a Linear Stream Array (vs. Secondary Stream Array) */ +#define EP_HAS_LSA (1 << 15) /* ep_info2 bitmasks */ /* @@ -648,8 +652,50 @@ struct xhci_command { /* add context bitmasks */ #define ADD_EP(x) (0x1 << x) +struct xhci_stream_ctx { + /* 64-bit stream ring address, cycle state, and stream type */ + u64 stream_ring; + /* offset 0x14 - 0x1f reserved for HC internal use */ + u32 reserved[2]; +}; + +/* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */ +#define SCT_FOR_CTX(p) (((p) << 1) & 0x7) +/* Secondary stream array type, dequeue pointer is to a transfer ring */ +#define SCT_SEC_TR 0 +/* Primary stream array type, dequeue pointer is to a transfer ring */ +#define SCT_PRI_TR 1 +/* Dequeue pointer is for a secondary stream array (SSA) with 8 entries */ +#define SCT_SSA_8 2 +#define SCT_SSA_16 3 +#define SCT_SSA_32 4 +#define SCT_SSA_64 5 +#define SCT_SSA_128 6 +#define SCT_SSA_256 7 + +/* Assume no secondary streams for now */ +struct xhci_stream_info { + struct xhci_ring **stream_rings; + /* Number of streams, including stream 0 (which drivers can't use) */ + unsigned int num_streams; + /* The stream context array may be bigger than + * the number of streams the driver asked for + */ + struct xhci_stream_ctx *stream_ctx_array; + unsigned int num_stream_ctxs; + dma_addr_t ctx_array_dma; + /* For mapping physical TRB addresses to segments in stream rings */ + struct radix_tree_root trb_address_map; + struct xhci_command *free_streams_command; +}; + +#define SMALL_STREAM_ARRAY_SIZE 256 +#define MEDIUM_STREAM_ARRAY_SIZE 1024 + struct xhci_virt_ep { struct xhci_ring *ring; + /* Related to endpoints that are configured to use stream IDs only */ + struct xhci_stream_info *stream_info; /* Temporary storage in case the configure endpoint command fails and we * have to restore the device state to the previous state */ @@ -658,6 +704,11 @@ struct xhci_virt_ep { #define SET_DEQ_PENDING (1 << 0) #define EP_HALTED (1 << 1) /* For stall handling */ #define EP_HALT_PENDING (1 << 2) /* For URB cancellation */ +/* Transitioning the endpoint to using streams, don't enqueue URBs */ +#define EP_GETTING_STREAMS (1 << 3) +#define EP_HAS_STREAMS (1 << 4) +/* Transitioning the endpoint to not using streams, don't enqueue URBs */ +#define EP_GETTING_NO_STREAMS (1 << 5) /* ---- Related to URB cancellation ---- */ struct list_head cancelled_td_list; /* The TRB that was last reported in a stopped endpoint ring */ @@ -710,14 +761,6 @@ struct xhci_device_context_array { */ -struct xhci_stream_ctx { - /* 64-bit stream ring address, cycle state, and stream type */ - u64 stream_ring; - /* offset 0x14 - 0x1f reserved for HC internal use */ - u32 reserved[2]; -}; - - struct xhci_transfer_event { /* 64-bit buffer address, or immediate data */ u64 buffer; @@ -952,6 +995,10 @@ union xhci_trb { /* Allow two commands + a link TRB, along with any reserved command TRBs */ #define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3) #define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) +/* SEGMENT_SHIFT should be log2(SEGMENT_SIZE). + * Change this if you change TRBS_PER_SEGMENT! + */ +#define SEGMENT_SHIFT 10 /* TRB buffer pointers can't cross 64KB boundaries */ #define TRB_MAX_BUFF_SHIFT 16 #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) @@ -1088,6 +1135,8 @@ struct xhci_hcd { /* DMA pools */ struct dma_pool *device_pool; struct dma_pool *segment_pool; + struct dma_pool *small_streams_pool; + struct dma_pool *medium_streams_pool; #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING /* Poll the rings - for debugging */ @@ -1242,6 +1291,17 @@ void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, unsigned int ep_index); +struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, + unsigned int num_stream_ctxs, + unsigned int num_streams, gfp_t flags); +void xhci_free_stream_info(struct xhci_hcd *xhci, + struct xhci_stream_info *stream_info); +void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, + struct xhci_ep_ctx *ep_ctx, + struct xhci_stream_info *stream_info); +void xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, + struct xhci_ep_ctx *ep_ctx, + struct xhci_virt_ep *ep); struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, bool allocate_in_ctx, bool allocate_completion, gfp_t mem_flags); @@ -1266,6 +1326,12 @@ int xhci_get_frame(struct usb_hcd *hcd); irqreturn_t xhci_irq(struct usb_hcd *hcd); int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); +int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags); +int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags); int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, struct usb_tt *tt, gfp_t mem_flags); -- cgit v1.2.3-58-ga151 From e9df17eb1408cfafa3d1844bfc7f22c7237b31b8 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Fri, 2 Apr 2010 15:34:43 -0700 Subject: USB: xhci: Correct assumptions about number of rings per endpoint. Much of the xHCI driver code assumes that endpoints only have one ring. Now an endpoint can have one ring per enabled stream ID, so correct that assumption. Use functions that translate the stream_id field in the URB or the DMA address of a TRB into the correct stream ring. Correct the polling loop to print out all enabled stream rings. Make the URB cancellation routine find the correct stream ring if the URB has stream_id set. Make sure the URB enqueueing routine does the same. Also correct the code that handles stalled/halted endpoints. Check that commands and registers that can take stream IDs handle them properly. That includes ringing an endpoint doorbell, resetting a stalled/halted endpoint, and setting a transfer ring dequeue pointer (since that command can set the dequeue pointer in a stream context or an endpoint context). Correct the transfer event handler to translate a TRB DMA address into the stream ring it was enqueued to. Make the code to allocate and prepare TD structures adds the TD to the right td_list for the stream ring. Make sure the code to give the first TRB in a TD to the hardware manipulates the correct stream ring. When an endpoint stalls, store the stream ID of the stream ring that stalled in the xhci_virt_ep structure. Use that instead of the stream ID in the URB, since an URB may be re-used after it is given back after a non-control endpoint stall. Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbg.c | 24 ++++++ drivers/usb/host/xhci-mem.c | 74 ++++++++++++++++- drivers/usb/host/xhci-ring.c | 192 +++++++++++++++++++++++++++++++++---------- drivers/usb/host/xhci.c | 19 +++-- drivers/usb/host/xhci.h | 26 +++++- 5 files changed, 280 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c index 105fa8b025bb..fcbf4abbf381 100644 --- a/drivers/usb/host/xhci-dbg.c +++ b/drivers/usb/host/xhci-dbg.c @@ -364,6 +364,30 @@ void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring) xhci_debug_segment(xhci, seg); } +void xhci_dbg_ep_rings(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + struct xhci_virt_ep *ep) +{ + int i; + struct xhci_ring *ring; + + if (ep->ep_state & EP_HAS_STREAMS) { + for (i = 1; i < ep->stream_info->num_streams; i++) { + ring = ep->stream_info->stream_rings[i]; + xhci_dbg(xhci, "Dev %d endpoint %d stream ID %d:\n", + slot_id, ep_index, i); + xhci_debug_segment(xhci, ring->deq_seg); + } + } else { + ring = ep->ring; + if (!ring) + return; + xhci_dbg(xhci, "Dev %d endpoint ring %d:\n", + slot_id, ep_index); + xhci_debug_segment(xhci, ring->deq_seg); + } +} + void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst) { u32 addr = (u32) erst->erst_dma_addr; diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index d299ffad806b..5711048708d7 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -353,8 +353,19 @@ struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, mem_flags, dma); } +struct xhci_ring *xhci_dma_to_transfer_ring( + struct xhci_virt_ep *ep, + u64 address) +{ + if (ep->ep_state & EP_HAS_STREAMS) + return radix_tree_lookup(&ep->stream_info->trb_address_map, + address >> SEGMENT_SHIFT); + return ep->ring; +} + +/* Only use this when you know stream_info is valid */ #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING -struct xhci_ring *dma_to_stream_ring( +static struct xhci_ring *dma_to_stream_ring( struct xhci_stream_info *stream_info, u64 address) { @@ -363,6 +374,66 @@ struct xhci_ring *dma_to_stream_ring( } #endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ +struct xhci_ring *xhci_stream_id_to_ring( + struct xhci_virt_device *dev, + unsigned int ep_index, + unsigned int stream_id) +{ + struct xhci_virt_ep *ep = &dev->eps[ep_index]; + + if (stream_id == 0) + return ep->ring; + if (!ep->stream_info) + return NULL; + + if (stream_id > ep->stream_info->num_streams) + return NULL; + return ep->stream_info->stream_rings[stream_id]; +} + +struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + unsigned int stream_id) +{ + struct xhci_virt_ep *ep; + + ep = &xhci->devs[slot_id]->eps[ep_index]; + /* Common case: no streams */ + if (!(ep->ep_state & EP_HAS_STREAMS)) + return ep->ring; + + if (stream_id == 0) { + xhci_warn(xhci, + "WARN: Slot ID %u, ep index %u has streams, " + "but URB has no stream ID.\n", + slot_id, ep_index); + return NULL; + } + + if (stream_id < ep->stream_info->num_streams) + return ep->stream_info->stream_rings[stream_id]; + + xhci_warn(xhci, + "WARN: Slot ID %u, ep index %u has " + "stream IDs 1 to %u allocated, " + "but stream ID %u is requested.\n", + slot_id, ep_index, + ep->stream_info->num_streams - 1, + stream_id); + return NULL; +} + +/* Get the right ring for the given URB. + * If the endpoint supports streams, boundary check the URB's stream ID. + * If the endpoint doesn't support streams, return the singular endpoint ring. + */ +struct xhci_ring *xhci_urb_to_transfer_ring(struct xhci_hcd *xhci, + struct urb *urb) +{ + return xhci_triad_to_transfer_ring(xhci, urb->dev->slot_id, + xhci_get_endpoint_index(&urb->ep->desc), urb->stream_id); +} + #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING static int xhci_test_radix_tree(struct xhci_hcd *xhci, unsigned int num_streams, @@ -515,6 +586,7 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, cur_ring = stream_info->stream_rings[cur_stream]; if (!cur_ring) goto cleanup_rings; + cur_ring->stream_id = cur_stream; /* Set deq ptr, cycle bit, and stream context type */ addr = cur_ring->first_seg->dma | SCT_FOR_CTX(SCT_PRI_TR) | diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index a14f657e279b..16ef5fd77ce2 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -312,7 +312,8 @@ void xhci_ring_cmd_db(struct xhci_hcd *xhci) static void ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, - unsigned int ep_index) + unsigned int ep_index, + unsigned int stream_id) { struct xhci_virt_ep *ep; unsigned int ep_state; @@ -331,7 +332,8 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci, if (!(ep_state & EP_HALT_PENDING) && !(ep_state & SET_DEQ_PENDING) && !(ep_state & EP_HALTED)) { field = xhci_readl(xhci, db_addr) & DB_MASK; - xhci_writel(xhci, field | EPI_TO_DB(ep_index), db_addr); + field |= EPI_TO_DB(ep_index) | STREAM_ID_TO_DB(stream_id); + xhci_writel(xhci, field, db_addr); /* Flush PCI posted writes - FIXME Matthew Wilcox says this * isn't time-critical and we shouldn't make the CPU wait for * the flush. @@ -340,6 +342,31 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci, } } +/* Ring the doorbell for any rings with pending URBs */ +static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, + unsigned int slot_id, + unsigned int ep_index) +{ + unsigned int stream_id; + struct xhci_virt_ep *ep; + + ep = &xhci->devs[slot_id]->eps[ep_index]; + + /* A ring has pending URBs if its TD list is not empty */ + if (!(ep->ep_state & EP_HAS_STREAMS)) { + if (!(list_empty(&ep->ring->td_list))) + ring_ep_doorbell(xhci, slot_id, ep_index, 0); + return; + } + + for (stream_id = 1; stream_id < ep->stream_info->num_streams; + stream_id++) { + struct xhci_stream_info *stream_info = ep->stream_info; + if (!list_empty(&stream_info->stream_rings[stream_id]->td_list)) + ring_ep_doorbell(xhci, slot_id, ep_index, stream_id); + } +} + /* * Find the segment that trb is in. Start searching in start_seg. * If we must move past a segment that has a link TRB with a toggle cycle state @@ -382,14 +409,23 @@ static struct xhci_segment *find_trb_seg( */ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, - struct xhci_td *cur_td, struct xhci_dequeue_state *state) + unsigned int stream_id, struct xhci_td *cur_td, + struct xhci_dequeue_state *state) { struct xhci_virt_device *dev = xhci->devs[slot_id]; - struct xhci_ring *ep_ring = dev->eps[ep_index].ring; + struct xhci_ring *ep_ring; struct xhci_generic_trb *trb; struct xhci_ep_ctx *ep_ctx; dma_addr_t addr; + ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, + ep_index, stream_id); + if (!ep_ring) { + xhci_warn(xhci, "WARN can't find new dequeue state " + "for invalid stream ID %u.\n", + stream_id); + return; + } state->new_cycle_state = 0; xhci_dbg(xhci, "Finding segment containing stopped TRB.\n"); state->new_deq_seg = find_trb_seg(cur_td->start_seg, @@ -469,11 +505,13 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, } static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, - unsigned int ep_index, struct xhci_segment *deq_seg, + unsigned int ep_index, unsigned int stream_id, + struct xhci_segment *deq_seg, union xhci_trb *deq_ptr, u32 cycle_state); void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, + unsigned int stream_id, struct xhci_dequeue_state *deq_state) { struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; @@ -485,7 +523,7 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, deq_state->new_deq_ptr, (unsigned long long)xhci_trb_virt_to_dma(deq_state->new_deq_seg, deq_state->new_deq_ptr), deq_state->new_cycle_state); - queue_set_tr_deq(xhci, slot_id, ep_index, + queue_set_tr_deq(xhci, slot_id, ep_index, stream_id, deq_state->new_deq_seg, deq_state->new_deq_ptr, (u32) deq_state->new_cycle_state); @@ -553,11 +591,10 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]); ep = &xhci->devs[slot_id]->eps[ep_index]; - ep_ring = ep->ring; if (list_empty(&ep->cancelled_td_list)) { xhci_stop_watchdog_timer_in_irq(xhci, ep); - ring_ep_doorbell(xhci, slot_id, ep_index); + ring_doorbell_for_active_rings(xhci, slot_id, ep_index); return; } @@ -571,15 +608,36 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, xhci_dbg(xhci, "Cancelling TD starting at %p, 0x%llx (dma).\n", cur_td->first_trb, (unsigned long long)xhci_trb_virt_to_dma(cur_td->start_seg, cur_td->first_trb)); + ep_ring = xhci_urb_to_transfer_ring(xhci, cur_td->urb); + if (!ep_ring) { + /* This shouldn't happen unless a driver is mucking + * with the stream ID after submission. This will + * leave the TD on the hardware ring, and the hardware + * will try to execute it, and may access a buffer + * that has already been freed. In the best case, the + * hardware will execute it, and the event handler will + * ignore the completion event for that TD, since it was + * removed from the td_list for that endpoint. In + * short, don't muck with the stream ID after + * submission. + */ + xhci_warn(xhci, "WARN Cancelled URB %p " + "has invalid stream ID %u.\n", + cur_td->urb, + cur_td->urb->stream_id); + goto remove_finished_td; + } /* * If we stopped on the TD we need to cancel, then we have to * move the xHC endpoint ring dequeue pointer past this TD. */ if (cur_td == ep->stopped_td) - xhci_find_new_dequeue_state(xhci, slot_id, ep_index, cur_td, - &deq_state); + xhci_find_new_dequeue_state(xhci, slot_id, ep_index, + cur_td->urb->stream_id, + cur_td, &deq_state); else td_to_noop(xhci, ep_ring, cur_td); +remove_finished_td: /* * The event handler won't see a completion for this TD anymore, * so remove it from the endpoint ring's TD list. Keep it in @@ -593,11 +651,13 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, /* If necessary, queue a Set Transfer Ring Dequeue Pointer command */ if (deq_state.new_deq_ptr && deq_state.new_deq_seg) { xhci_queue_new_dequeue_state(xhci, - slot_id, ep_index, &deq_state); + slot_id, ep_index, + ep->stopped_td->urb->stream_id, + &deq_state); xhci_ring_cmd_db(xhci); } else { - /* Otherwise just ring the doorbell to restart the ring */ - ring_ep_doorbell(xhci, slot_id, ep_index); + /* Otherwise ring the doorbell(s) to restart queued transfers */ + ring_doorbell_for_active_rings(xhci, slot_id, ep_index); } ep->stopped_td = NULL; ep->stopped_trb = NULL; @@ -757,6 +817,7 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci, { unsigned int slot_id; unsigned int ep_index; + unsigned int stream_id; struct xhci_ring *ep_ring; struct xhci_virt_device *dev; struct xhci_ep_ctx *ep_ctx; @@ -764,8 +825,19 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci, slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]); + stream_id = TRB_TO_STREAM_ID(trb->generic.field[2]); dev = xhci->devs[slot_id]; - ep_ring = dev->eps[ep_index].ring; + + ep_ring = xhci_stream_id_to_ring(dev, ep_index, stream_id); + if (!ep_ring) { + xhci_warn(xhci, "WARN Set TR deq ptr command for " + "freed stream ID %u\n", + stream_id); + /* XXX: Harmless??? */ + dev->eps[ep_index].ep_state &= ~SET_DEQ_PENDING; + return; + } + ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index); slot_ctx = xhci_get_slot_ctx(xhci, dev->out_ctx); @@ -810,7 +882,8 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci, } dev->eps[ep_index].ep_state &= ~SET_DEQ_PENDING; - ring_ep_doorbell(xhci, slot_id, ep_index); + /* Restart any rings with pending URBs */ + ring_doorbell_for_active_rings(xhci, slot_id, ep_index); } static void handle_reset_ep_completion(struct xhci_hcd *xhci, @@ -819,11 +892,9 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci, { int slot_id; unsigned int ep_index; - struct xhci_ring *ep_ring; slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]); - ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; /* This command will only fail if the endpoint wasn't halted, * but we don't care. */ @@ -841,9 +912,9 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci, false); xhci_ring_cmd_db(xhci); } else { - /* Clear our internal halted state and restart the ring */ + /* Clear our internal halted state and restart the ring(s) */ xhci->devs[slot_id]->eps[ep_index].ep_state &= ~EP_HALTED; - ring_ep_doorbell(xhci, slot_id, ep_index); + ring_doorbell_for_active_rings(xhci, slot_id, ep_index); } } @@ -929,8 +1000,10 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, /* Input ctx add_flags are the endpoint index plus one */ ep_index = xhci_last_valid_endpoint(ctrl_ctx->add_flags) - 1; /* A usb_set_interface() call directly after clearing a halted - * condition may race on this quirky hardware. - * Not worth worrying about, since this is prototype hardware. + * condition may race on this quirky hardware. Not worth + * worrying about, since this is prototype hardware. Not sure + * if this will work for streams, but streams support was + * untested on this prototype. */ if (xhci->quirks & XHCI_RESET_EP_QUIRK && ep_index != (unsigned int) -1 && @@ -943,10 +1016,10 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, xhci_dbg(xhci, "Completed config ep cmd - " "last ep index = %d, state = %d\n", ep_index, ep_state); - /* Clear our internal halted state and restart ring */ + /* Clear internal halted state and restart ring(s) */ xhci->devs[slot_id]->eps[ep_index].ep_state &= ~EP_HALTED; - ring_ep_doorbell(xhci, slot_id, ep_index); + ring_doorbell_for_active_rings(xhci, slot_id, ep_index); break; } bandwidth_change: @@ -1079,12 +1152,14 @@ struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, + unsigned int stream_id, struct xhci_td *td, union xhci_trb *event_trb) { struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; ep->ep_state |= EP_HALTED; ep->stopped_td = td; ep->stopped_trb = event_trb; + ep->stopped_stream = stream_id; xhci_queue_reset_ep(xhci, slot_id, ep_index); xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); @@ -1169,10 +1244,11 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep_index = TRB_TO_EP_ID(event->flags) - 1; xhci_dbg(xhci, "%s - ep index = %d\n", __func__, ep_index); ep = &xdev->eps[ep_index]; - ep_ring = ep->ring; + ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer); ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); if (!ep_ring || (ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_DISABLED) { - xhci_err(xhci, "ERROR Transfer event pointed to disabled endpoint\n"); + xhci_err(xhci, "ERROR Transfer event for disabled endpoint " + "or incorrect stream ring\n"); return -ENODEV; } @@ -1303,7 +1379,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, td->urb->actual_length = 0; xhci_cleanup_halted_endpoint(xhci, - slot_id, ep_index, td, event_trb); + slot_id, ep_index, 0, td, event_trb); goto td_cleanup; } /* @@ -1452,6 +1528,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, */ ep->stopped_td = td; ep->stopped_trb = event_trb; + ep->stopped_stream = ep_ring->stream_id; } else if (xhci_requires_manual_halt_cleanup(xhci, ep_ctx, trb_comp_code)) { /* Other types of errors halt the endpoint, but the @@ -1460,7 +1537,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, * xHCI hardware manually. */ xhci_cleanup_halted_endpoint(xhci, - slot_id, ep_index, td, event_trb); + slot_id, ep_index, ep_ring->stream_id, td, event_trb); } else { /* Update ring dequeue pointer */ while (ep_ring->dequeue != td->last_trb) @@ -1656,14 +1733,24 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, static int prepare_transfer(struct xhci_hcd *xhci, struct xhci_virt_device *xdev, unsigned int ep_index, + unsigned int stream_id, unsigned int num_trbs, struct urb *urb, struct xhci_td **td, gfp_t mem_flags) { int ret; + struct xhci_ring *ep_ring; struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); - ret = prepare_ring(xhci, xdev->eps[ep_index].ring, + + ep_ring = xhci_stream_id_to_ring(xdev, ep_index, stream_id); + if (!ep_ring) { + xhci_dbg(xhci, "Can't prepare ring for bad stream ID %u\n", + stream_id); + return -EINVAL; + } + + ret = prepare_ring(xhci, ep_ring, ep_ctx->ep_info & EP_STATE_MASK, num_trbs, mem_flags); if (ret) @@ -1683,9 +1770,9 @@ static int prepare_transfer(struct xhci_hcd *xhci, (*td)->urb = urb; urb->hcpriv = (void *) (*td); /* Add this TD to the tail of the endpoint ring's TD list */ - list_add_tail(&(*td)->td_list, &xdev->eps[ep_index].ring->td_list); - (*td)->start_seg = xdev->eps[ep_index].ring->enq_seg; - (*td)->first_trb = xdev->eps[ep_index].ring->enqueue; + list_add_tail(&(*td)->td_list, &ep_ring->td_list); + (*td)->start_seg = ep_ring->enq_seg; + (*td)->first_trb = ep_ring->enqueue; return 0; } @@ -1751,7 +1838,7 @@ static void check_trb_math(struct urb *urb, int num_trbs, int running_total) } static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, - unsigned int ep_index, int start_cycle, + unsigned int ep_index, unsigned int stream_id, int start_cycle, struct xhci_generic_trb *start_trb, struct xhci_td *td) { /* @@ -1760,7 +1847,7 @@ static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, */ wmb(); start_trb->field[3] |= start_cycle; - ring_ep_doorbell(xhci, slot_id, ep_index); + ring_ep_doorbell(xhci, slot_id, ep_index, stream_id); } /* @@ -1834,12 +1921,16 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct xhci_generic_trb *start_trb; int start_cycle; - ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; + ep_ring = xhci_urb_to_transfer_ring(xhci, urb); + if (!ep_ring) + return -EINVAL; + num_trbs = count_sg_trbs_needed(xhci, urb); num_sgs = urb->num_sgs; trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id], - ep_index, num_trbs, urb, &td, mem_flags); + ep_index, urb->stream_id, + num_trbs, urb, &td, mem_flags); if (trb_buff_len < 0) return trb_buff_len; /* @@ -1948,7 +2039,8 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, } while (running_total < urb->transfer_buffer_length); check_trb_math(urb, num_trbs, running_total); - giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, + start_cycle, start_trb, td); return 0; } @@ -1970,7 +2062,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, if (urb->num_sgs) return queue_bulk_sg_tx(xhci, mem_flags, urb, slot_id, ep_index); - ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; + ep_ring = xhci_urb_to_transfer_ring(xhci, urb); + if (!ep_ring) + return -EINVAL; num_trbs = 0; /* How much data is (potentially) left before the 64KB boundary? */ @@ -1997,7 +2091,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, (unsigned long long)urb->transfer_dma, num_trbs); - ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, + ret = prepare_transfer(xhci, xhci->devs[slot_id], + ep_index, urb->stream_id, num_trbs, urb, &td, mem_flags); if (ret < 0) return ret; @@ -2067,7 +2162,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, } while (running_total < urb->transfer_buffer_length); check_trb_math(urb, num_trbs, running_total); - giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, + start_cycle, start_trb, td); return 0; } @@ -2084,7 +2180,9 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, u32 field, length_field; struct xhci_td *td; - ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; + ep_ring = xhci_urb_to_transfer_ring(xhci, urb); + if (!ep_ring) + return -EINVAL; /* * Need to copy setup packet into setup TRB, so we can't use the setup @@ -2105,8 +2203,9 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, */ if (urb->transfer_buffer_length > 0) num_trbs++; - ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, - urb, &td, mem_flags); + ret = prepare_transfer(xhci, xhci->devs[slot_id], + ep_index, urb->stream_id, + num_trbs, urb, &td, mem_flags); if (ret < 0) return ret; @@ -2161,7 +2260,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, /* Event on completion */ field | TRB_IOC | TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state); - giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + giveback_first_trb(xhci, slot_id, ep_index, 0, + start_cycle, start_trb, td); return 0; } @@ -2273,12 +2373,14 @@ int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, * This should not be used for endpoints that have streams enabled. */ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, - unsigned int ep_index, struct xhci_segment *deq_seg, + unsigned int ep_index, unsigned int stream_id, + struct xhci_segment *deq_seg, union xhci_trb *deq_ptr, u32 cycle_state) { dma_addr_t addr; u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id); u32 trb_ep_index = EP_ID_FOR_TRB(ep_index); + u32 trb_stream_id = STREAM_ID_FOR_TRB(stream_id); u32 type = TRB_TYPE(TRB_SET_DEQ); addr = xhci_trb_virt_to_dma(deq_seg, deq_ptr); @@ -2289,7 +2391,7 @@ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, return 0; } return queue_command(xhci, lower_32_bits(addr) | cycle_state, - upper_32_bits(addr), 0, + upper_32_bits(addr), trb_stream_id, trb_slot_id | trb_ep_index | type, false); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 2e370fea9590..3cac2ff8b50a 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -353,11 +353,7 @@ void xhci_event_ring_work(unsigned long arg) if (!xhci->devs[i]) continue; for (j = 0; j < 31; ++j) { - struct xhci_ring *ring = xhci->devs[i]->eps[j].ring; - if (!ring) - continue; - xhci_dbg(xhci, "Dev %d endpoint ring %d:\n", i, j); - xhci_debug_segment(xhci, ring->deq_seg); + xhci_dbg_ep_rings(xhci, i, j, &xhci->devs[i]->eps[j]); } } @@ -839,7 +835,12 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) xhci_debug_ring(xhci, xhci->event_ring); ep_index = xhci_get_endpoint_index(&urb->ep->desc); ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index]; - ep_ring = ep->ring; + ep_ring = xhci_urb_to_transfer_ring(xhci, urb); + if (!ep_ring) { + ret = -EINVAL; + goto done; + } + xhci_dbg(xhci, "Endpoint ring:\n"); xhci_debug_ring(xhci, ep_ring); td = (struct xhci_td *) urb->hcpriv; @@ -1383,7 +1384,7 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, * or it will attempt to resend it on the next doorbell ring. */ xhci_find_new_dequeue_state(xhci, udev->slot_id, - ep_index, ep->stopped_td, + ep_index, ep->stopped_stream, ep->stopped_td, &deq_state); /* HW with the reset endpoint quirk will use the saved dequeue state to @@ -1392,10 +1393,12 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, if (!(xhci->quirks & XHCI_RESET_EP_QUIRK)) { xhci_dbg(xhci, "Queueing new dequeue state\n"); xhci_queue_new_dequeue_state(xhci, udev->slot_id, - ep_index, &deq_state); + ep_index, ep->stopped_stream, &deq_state); } else { /* Better hope no one uses the input context between now and the * reset endpoint completion! + * XXX: No idea how this hardware will react when stream rings + * are enabled. */ xhci_dbg(xhci, "Setting up input context for " "configure endpoint command\n"); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 7a9447cb6ea9..dada2fb59261 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -444,6 +444,7 @@ struct xhci_doorbell_array { /* Endpoint Target - bits 0:7 */ #define EPI_TO_DB(p) (((p) + 1) & 0xff) +#define STREAM_ID_TO_DB(p) (((p) & 0xffff) << 16) /** @@ -714,6 +715,7 @@ struct xhci_virt_ep { /* The TRB that was last reported in a stopped endpoint ring */ union xhci_trb *stopped_trb; struct xhci_td *stopped_td; + unsigned int stopped_stream; /* Watchdog timer for stop endpoint command to cancel URBs */ struct timer_list stop_cmd_timer; int stop_cmds_pending; @@ -871,6 +873,10 @@ struct xhci_event_cmd { #define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1) #define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16) +/* Set TR Dequeue Pointer command TRB fields */ +#define TRB_TO_STREAM_ID(p) ((((p) & (0xffff << 16)) >> 16)) +#define STREAM_ID_FOR_TRB(p) ((((p)) & 0xffff) << 16) + /* Port Status Change Event TRB fields */ /* Port ID - bits 31:24 */ @@ -1040,6 +1046,7 @@ struct xhci_ring { * if we own the TRB (if we are the consumer). See section 4.9.1. */ u32 cycle_state; + unsigned int stream_id; }; struct xhci_erst_entry { @@ -1265,6 +1272,9 @@ void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep); char *xhci_get_slot_state(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); +void xhci_dbg_ep_rings(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + struct xhci_virt_ep *ep); /* xHCI memory management */ void xhci_mem_cleanup(struct xhci_hcd *xhci); @@ -1302,6 +1312,18 @@ void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, void xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, struct xhci_ep_ctx *ep_ctx, struct xhci_virt_ep *ep); +struct xhci_ring *xhci_dma_to_transfer_ring( + struct xhci_virt_ep *ep, + u64 address); +struct xhci_ring *xhci_urb_to_transfer_ring(struct xhci_hcd *xhci, + struct urb *urb); +struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + unsigned int stream_id); +struct xhci_ring *xhci_stream_id_to_ring( + struct xhci_virt_device *dev, + unsigned int ep_index, + unsigned int stream_id); struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, bool allocate_in_ctx, bool allocate_completion, gfp_t mem_flags); @@ -1374,9 +1396,11 @@ int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id, int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id); void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, - struct xhci_td *cur_td, struct xhci_dequeue_state *state); + unsigned int stream_id, struct xhci_td *cur_td, + struct xhci_dequeue_state *state); void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, + unsigned int stream_id, struct xhci_dequeue_state *deq_state); void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, struct usb_device *udev, unsigned int ep_index); -- cgit v1.2.3-58-ga151 From eab1cafc3b524b714b0567ab98fc75ace09db98c Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Mon, 5 Apr 2010 10:55:58 -0700 Subject: USB: Support for allocating USB 3.0 streams. Bulk endpoint streams were added in the USB 3.0 specification. Streams allow a device driver to overload a bulk endpoint so that multiple transfers can be queued at once. The device then decides which transfer it wants to work on first, and can queue part of a transfer before it switches to a new stream. All this switching is invisible to the device driver, which just gets a completion for the URB. Drivers that use streams must be able to handle URBs completing in a different order than they were submitted to the endpoint. This requires adding new API to set up xHCI data structures to support multiple queues ("stream rings") per endpoint. Drivers will allocate a number of stream IDs before enqueueing URBs to the bulk endpoints of the device, and free the stream IDs in their disconnect function. See Documentation/usb/bulk-streams.txt for details. The new mass storage device class, USB Attached SCSI Protocol (UASP), uses these streams API. Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/bulk-streams.txt | 78 ++++++++++++++++++++++++++++++++++++++ drivers/usb/core/hcd.c | 69 +++++++++++++++++++++++++++++++++ drivers/usb/host/xhci-pci.c | 2 + include/linux/usb.h | 10 +++++ include/linux/usb/hcd.h | 10 +++++ 5 files changed, 169 insertions(+) create mode 100644 Documentation/usb/bulk-streams.txt (limited to 'drivers') diff --git a/Documentation/usb/bulk-streams.txt b/Documentation/usb/bulk-streams.txt new file mode 100644 index 000000000000..ffc02021863e --- /dev/null +++ b/Documentation/usb/bulk-streams.txt @@ -0,0 +1,78 @@ +Background +========== + +Bulk endpoint streams were added in the USB 3.0 specification. Streams allow a +device driver to overload a bulk endpoint so that multiple transfers can be +queued at once. + +Streams are defined in sections 4.4.6.4 and 8.12.1.4 of the Universal Serial Bus +3.0 specification at http://www.usb.org/developers/docs/ The USB Attached SCSI +Protocol, which uses streams to queue multiple SCSI commands, can be found on +the T10 website (http://t10.org/). + + +Device-side implications +======================== + +Once a buffer has been queued to a stream ring, the device is notified (through +an out-of-band mechanism on another endpoint) that data is ready for that stream +ID. The device then tells the host which "stream" it wants to start. The host +can also initiate a transfer on a stream without the device asking, but the +device can refuse that transfer. Devices can switch between streams at any +time. + + +Driver implications +=================== + +int usb_alloc_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags); + +Device drivers will call this API to request that the host controller driver +allocate memory so the driver can use up to num_streams stream IDs. They must +pass an array of usb_host_endpoints that need to be setup with similar stream +IDs. This is to ensure that a UASP driver will be able to use the same stream +ID for the bulk IN and OUT endpoints used in a Bi-directional command sequence. + +The return value is an error condition (if one of the endpoints doesn't support +streams, or the xHCI driver ran out of memory), or the number of streams the +host controller allocated for this endpoint. The xHCI host controller hardware +declares how many stream IDs it can support, and each bulk endpoint on a +SuperSpeed device will say how many stream IDs it can handle. Therefore, +drivers should be able to deal with being allocated less stream IDs than they +requested. + +Do NOT call this function if you have URBs enqueued for any of the endpoints +passed in as arguments. Do not call this function to request less than two +streams. + +Drivers will only be allowed to call this API once for the same endpoint +without calling usb_free_streams(). This is a simplification for the xHCI host +controller driver, and may change in the future. + + +Picking new Stream IDs to use +============================ + +Stream ID 0 is reserved, and should not be used to communicate with devices. If +usb_alloc_streams() returns with a value of N, you may use streams 1 though N. +To queue an URB for a specific stream, set the urb->stream_id value. If the +endpoint does not support streams, an error will be returned. + +Note that new API to choose the next stream ID will have to be added if the xHCI +driver supports secondary stream IDs. + + +Clean up +======== + +If a driver wishes to stop using streams to communicate with the device, it +should call + +void usb_free_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags); + +All stream IDs will be deallocated when the driver releases the interface, to +ensure that drivers that don't support streams will be able to use the endpoint. diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 6a05e6934455..3aaee2811f01 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1814,6 +1814,75 @@ void usb_hcd_reset_endpoint(struct usb_device *udev, } } +/** + * usb_alloc_streams - allocate bulk endpoint stream IDs. + * @interface: alternate setting that includes all endpoints. + * @eps: array of endpoints that need streams. + * @num_eps: number of endpoints in the array. + * @num_streams: number of streams to allocate. + * @mem_flags: flags hcd should use to allocate memory. + * + * Sets up a group of bulk endpoints to have num_streams stream IDs available. + * Drivers may queue multiple transfers to different stream IDs, which may + * complete in a different order than they were queued. + */ +int usb_alloc_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags) +{ + struct usb_hcd *hcd; + struct usb_device *dev; + int i; + + dev = interface_to_usbdev(interface); + hcd = bus_to_hcd(dev->bus); + if (!hcd->driver->alloc_streams || !hcd->driver->free_streams) + return -EINVAL; + if (dev->speed != USB_SPEED_SUPER) + return -EINVAL; + + /* Streams only apply to bulk endpoints. */ + for (i = 0; i < num_eps; i++) + if (!usb_endpoint_xfer_bulk(&eps[i]->desc)) + return -EINVAL; + + return hcd->driver->alloc_streams(hcd, dev, eps, num_eps, + num_streams, mem_flags); +} +EXPORT_SYMBOL_GPL(usb_alloc_streams); + +/** + * usb_free_streams - free bulk endpoint stream IDs. + * @interface: alternate setting that includes all endpoints. + * @eps: array of endpoints to remove streams from. + * @num_eps: number of endpoints in the array. + * @mem_flags: flags hcd should use to allocate memory. + * + * Reverts a group of bulk endpoints back to not using stream IDs. + * Can fail if we are given bad arguments, or HCD is broken. + */ +void usb_free_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags) +{ + struct usb_hcd *hcd; + struct usb_device *dev; + int i; + + dev = interface_to_usbdev(interface); + hcd = bus_to_hcd(dev->bus); + if (dev->speed != USB_SPEED_SUPER) + return; + + /* Streams only apply to bulk endpoints. */ + for (i = 0; i < num_eps; i++) + if (!usb_endpoint_xfer_bulk(&eps[i]->desc)) + return; + + hcd->driver->free_streams(hcd, dev, eps, num_eps, mem_flags); +} +EXPORT_SYMBOL_GPL(usb_free_streams); + /* Protect against drivers that try to unlink URBs after the device * is gone, by waiting until all unlinks for @udev are finished. * Since we don't currently track URBs by device, simply wait until diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 98a73cd20cc6..d295bbc15eb7 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -132,6 +132,8 @@ static const struct hc_driver xhci_pci_hc_driver = { .urb_dequeue = xhci_urb_dequeue, .alloc_dev = xhci_alloc_dev, .free_dev = xhci_free_dev, + .alloc_streams = xhci_alloc_streams, + .free_streams = xhci_free_streams, .add_endpoint = xhci_add_endpoint, .drop_endpoint = xhci_drop_endpoint, .endpoint_reset = xhci_endpoint_reset, diff --git a/include/linux/usb.h b/include/linux/usb.h index 191af498c4f5..1ea25377ca0d 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -570,6 +570,16 @@ static inline void usb_mark_last_busy(struct usb_device *udev) /* for drivers using iso endpoints */ extern int usb_get_current_frame_number(struct usb_device *usb_dev); +/* Sets up a group of bulk endpoints to support multiple stream IDs. */ +extern int usb_alloc_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags); + +/* Reverts a group of bulk endpoints back to not using stream IDs. */ +extern void usb_free_streams(struct usb_interface *interface, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags); + /* used these for multi-interface device registration */ extern int usb_driver_claim_interface(struct usb_driver *driver, struct usb_interface *iface, void *priv); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index d268415b7a40..aca73a5c3af7 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -250,6 +250,16 @@ struct hc_driver { int (*alloc_dev)(struct usb_hcd *, struct usb_device *); /* Called by usb_disconnect to free HC device structures */ void (*free_dev)(struct usb_hcd *, struct usb_device *); + /* Change a group of bulk endpoints to support multiple stream IDs */ + int (*alloc_streams)(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + unsigned int num_streams, gfp_t mem_flags); + /* Reverts a group of bulk endpoints back to not using stream IDs. + * Can fail if we run out of memory. + */ + int (*free_streams)(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint **eps, unsigned int num_eps, + gfp_t mem_flags); /* Bandwidth computation functions */ /* Note that add_endpoint() can only be called once per endpoint before -- cgit v1.2.3-58-ga151 From 9ed3fd6c10a161626120862d39f0211657d7c876 Mon Sep 17 00:00:00 2001 From: Phil Dibowitz Date: Sun, 4 Apr 2010 14:21:01 +0200 Subject: USB: storage: Remove unneeded SL11R unusual_devs entry It seems unlikely that this entry is needed anymore since the kernel has logic to handle devices that poorly respond to INQUIRY. Since we now have another entry with the same VID/PID but different flags, it's a good time to attempt to clean this up. The original submitter's email no longer works, so we'll keep an eye out for any regression reports. Signed-off-by: Phil Dibowitz Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index ccf1dbbb87ef..b402d5f27272 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -365,15 +365,6 @@ UNUSUAL_DEV( 0x04cb, 0x0100, 0x0000, 0x2210, "FinePix 1400Zoom", US_SC_UFI, US_PR_DEVICE, NULL, US_FL_FIX_INQUIRY | US_FL_SINGLE_LUN), -/* Reported by Peter Wächtler - * The device needs the flags only. - */ -UNUSUAL_DEV( 0x04ce, 0x0002, 0x0074, 0x0074, - "ScanLogic", - "SL11R-IDE", - US_SC_DEVICE, US_PR_DEVICE, NULL, - US_FL_FIX_INQUIRY), - /* Reported by Ondrej Zary * The device reports one sector more and breaks when that sector is accessed */ -- cgit v1.2.3-58-ga151 From 3681d8f3ee8f47b60b4621a3d80f8d1d39e7185b Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 6 Apr 2010 18:26:03 -0700 Subject: USB: ehci: Elide I/O watchdog on NEC parts I've been running with this patch on my Niagara2 boxes for some time and have not seen any ill effects yet. Maybe we can stash this into the USB tree to get exposure for some time in -next and if anything crops up we can simply revert? Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-pci.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index ead5f4f2aa5a..d120059bbbf7 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -109,6 +109,9 @@ static int ehci_pci_setup(struct usb_hcd *hcd) return retval; switch (pdev->vendor) { + case PCI_VENDOR_ID_NEC: + ehci->need_io_watchdog = 0; + break; case PCI_VENDOR_ID_INTEL: ehci->need_io_watchdog = 0; if (pdev->device == 0x27cc) { -- cgit v1.2.3-58-ga151 From 94a82487e6e57a102636a5326c930619f641038c Mon Sep 17 00:00:00 2001 From: Viral Mehta Date: Tue, 6 Apr 2010 11:51:00 +0530 Subject: USB: omap: switch to subsys_initcall for isp1301 transceiver isp1301 transceiver driver init should be done before we do ohci omap init Signed-off-by: Viral Mehta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/otg/isp1301_omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c index 78a209709260..456969492410 100644 --- a/drivers/usb/otg/isp1301_omap.c +++ b/drivers/usb/otg/isp1301_omap.c @@ -1654,7 +1654,7 @@ static int __init isp_init(void) { return i2c_add_driver(&isp1301_driver); } -module_init(isp_init); +subsys_initcall(isp_init); static void __exit isp_exit(void) { -- cgit v1.2.3-58-ga151 From 4545f7eea31f3f8486b7b925d67abe2e4e47a75a Mon Sep 17 00:00:00 2001 From: "Javier Blanco de Torres (Neurowork)" Date: Mon, 12 Apr 2010 09:21:13 +0200 Subject: USB: ueagle: fix Coding Styles MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixed coding styles in the ueagle usb driver. Signed-off-by: Javier Blanco de Torres Signed-off-by: Alejandro Sánchez Acosta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/atm/ueagle-atm.c | 347 ++++++++++++++++++++++++++----------------- 1 file changed, 207 insertions(+), 140 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 25f01b536f67..e213d3fa4920 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -94,19 +94,19 @@ } while (0) #define uea_enters(usb_dev) \ - uea_vdbg(usb_dev, "entering %s\n", __func__) + uea_vdbg(usb_dev, "entering %s\n" , __func__) #define uea_leaves(usb_dev) \ - uea_vdbg(usb_dev, "leaving %s\n", __func__) + uea_vdbg(usb_dev, "leaving %s\n" , __func__) -#define uea_err(usb_dev, format,args...) \ - dev_err(&(usb_dev)->dev ,"[UEAGLE-ATM] " format , ##args) +#define uea_err(usb_dev, format, args...) \ + dev_err(&(usb_dev)->dev , "[UEAGLE-ATM] " format , ##args) -#define uea_warn(usb_dev, format,args...) \ - dev_warn(&(usb_dev)->dev ,"[Ueagle-atm] " format, ##args) +#define uea_warn(usb_dev, format, args...) \ + dev_warn(&(usb_dev)->dev , "[Ueagle-atm] " format, ##args) -#define uea_info(usb_dev, format,args...) \ - dev_info(&(usb_dev)->dev ,"[ueagle-atm] " format, ##args) +#define uea_info(usb_dev, format, args...) \ + dev_info(&(usb_dev)->dev , "[ueagle-atm] " format, ##args) struct intr_pkt; @@ -289,7 +289,7 @@ enum { #define IS_ISDN(x) \ ((x)->annex & ANNEXB) -#define INS_TO_USBDEV(ins) ins->usb_dev +#define INS_TO_USBDEV(ins) (ins->usb_dev) #define GET_STATUS(data) \ ((data >> 8) & 0xf) @@ -304,7 +304,7 @@ enum { * The FW_GET_BYTE() macro is provided only for consistency. */ -#define FW_GET_BYTE(p) *((__u8 *) (p)) +#define FW_GET_BYTE(p) (*((__u8 *) (p))) #define FW_DIR "ueagle-atm/" #define UEA_FW_NAME_MAX 30 @@ -315,7 +315,7 @@ enum { #define ACK_TIMEOUT msecs_to_jiffies(3000) -#define UEA_INTR_IFACE_NO 0 +#define UEA_INTR_IFACE_NO 0 #define UEA_US_IFACE_NO 1 #define UEA_DS_IFACE_NO 2 @@ -326,9 +326,9 @@ enum { #define UEA_INTR_PIPE 0x04 #define UEA_ISO_DATA_PIPE 0x08 -#define UEA_E1_SET_BLOCK 0x0001 +#define UEA_E1_SET_BLOCK 0x0001 #define UEA_E4_SET_BLOCK 0x002c -#define UEA_SET_MODE 0x0003 +#define UEA_SET_MODE 0x0003 #define UEA_SET_2183_DATA 0x0004 #define UEA_SET_TIMEOUT 0x0011 @@ -366,7 +366,7 @@ struct l1_code { u8 string_header[E4_L1_STRING_HEADER]; u8 page_number_to_block_index[E4_MAX_PAGE_NUMBER]; struct block_index page_header[E4_NO_SWAPPAGE_HEADERS]; - u8 code [0]; + u8 code[0]; } __attribute__ ((packed)); /* structures describing a block within a DSP page */ @@ -428,7 +428,8 @@ struct block_info_e4 { #define E4_MODEMREADY 0x1 #define E1_MAKEFUNCTION(t, s) (((t) & 0xf) << 4 | ((s) & 0xf)) -#define E4_MAKEFUNCTION(t, st, s) (((t) & 0xf) << 8 | ((st) & 0xf) << 4 | ((s) & 0xf)) +#define E4_MAKEFUNCTION(t, st, s) (((t) & 0xf) << 8 | \ + ((st) & 0xf) << 4 | ((s) & 0xf)) #define E1_MAKESA(a, b, c, d) \ (((c) & 0xff) << 24 | \ @@ -473,7 +474,7 @@ struct cmv_e4 { __be16 wFunction; __be16 wOffset; __be16 wAddress; - __be32 dwData [6]; + __be32 dwData[6]; } __attribute__ ((packed)); /* structures representing swap information */ @@ -534,11 +535,13 @@ struct intr_pkt { static struct usb_driver uea_driver; static DEFINE_MUTEX(uea_mutex); -static const char *chip_name[] = {"ADI930", "Eagle I", "Eagle II", "Eagle III", "Eagle IV"}; +static const char *chip_name[] = {"ADI930", "Eagle I", "Eagle II", "Eagle III", + "Eagle IV"}; static int modem_index; static unsigned int debug; -static unsigned int altsetting[NB_MODEM] = {[0 ... (NB_MODEM - 1)] = FASTEST_ISO_INTF}; +static unsigned int altsetting[NB_MODEM] = { + [0 ... (NB_MODEM - 1)] = FASTEST_ISO_INTF}; static int sync_wait[NB_MODEM]; static char *cmv_file[NB_MODEM]; static int annex[NB_MODEM]; @@ -555,7 +558,7 @@ MODULE_PARM_DESC(cmv_file, "file name with configuration and management variables"); module_param_array(annex, uint, NULL, 0644); MODULE_PARM_DESC(annex, - "manually set annex a/b (0=auto, 1=annex a, 2=annex b)"); + "manually set annex a/b (0=auto, 1=annex a, 2=annex b)"); #define uea_wait(sc, cond, timeo) \ ({ \ @@ -602,7 +605,8 @@ static int uea_send_modem_cmd(struct usb_device *usb, return (ret == size) ? 0 : -EIO; } -static void uea_upload_pre_firmware(const struct firmware *fw_entry, void *context) +static void uea_upload_pre_firmware(const struct firmware *fw_entry, + void *context) { struct usb_device *usb = context; const u8 *pfw; @@ -707,7 +711,8 @@ static int uea_load_firmware(struct usb_device *usb, unsigned int ver) } ret = request_firmware_nowait(THIS_MODULE, 1, fw_name, &usb->dev, - GFP_KERNEL, usb, uea_upload_pre_firmware); + GFP_KERNEL, usb, + uea_upload_pre_firmware); if (ret) uea_err(usb, "firmware %s is not available\n", fw_name); else @@ -876,7 +881,7 @@ static int request_dsp(struct uea_softc *sc) if (ret < 0) { uea_err(INS_TO_USBDEV(sc), "requesting firmware %s failed with error %d\n", - dsp_name, ret); + dsp_name, ret); return ret; } @@ -994,14 +999,17 @@ static void __uea_load_page_e4(struct uea_softc *sc, u8 pageno, int boot) blockidx = &p->page_header[blockno]; blocksize = E4_PAGE_BYTES(blockidx->PageSize); - blockoffset = sc->dsp_firm->data + le32_to_cpu(blockidx->PageOffset); + blockoffset = sc->dsp_firm->data + le32_to_cpu( + blockidx->PageOffset); bi.dwSize = cpu_to_be32(blocksize); bi.dwAddress = cpu_to_be32(le32_to_cpu(blockidx->PageAddress)); uea_dbg(INS_TO_USBDEV(sc), - "sending block %u for DSP page %u size %u address %x\n", - blockno, pageno, blocksize, le32_to_cpu(blockidx->PageAddress)); + "sending block %u for DSP page " + "%u size %u address %x\n", + blockno, pageno, blocksize, + le32_to_cpu(blockidx->PageAddress)); /* send block info through the IDMA pipe */ if (uea_idma_write(sc, &bi, E4_BLOCK_INFO_SIZE)) @@ -1042,7 +1050,8 @@ static void uea_load_page_e4(struct work_struct *work) p = (struct l1_code *) sc->dsp_firm->data; if (pageno >= le16_to_cpu(p->page_header[0].PageNumber)) { - uea_err(INS_TO_USBDEV(sc), "invalid DSP page %u requested\n", pageno); + uea_err(INS_TO_USBDEV(sc), "invalid DSP " + "page %u requested\n", pageno); return; } @@ -1059,7 +1068,7 @@ static void uea_load_page_e4(struct work_struct *work) __uea_load_page_e4(sc, i, 1); } - uea_dbg(INS_TO_USBDEV(sc),"sending start bi\n"); + uea_dbg(INS_TO_USBDEV(sc) , "sending start bi\n"); bi.wHdr = cpu_to_be16(UEA_BIHDR); bi.bBootPage = 0; @@ -1139,8 +1148,10 @@ static int uea_cmv_e1(struct uea_softc *sc, uea_enters(INS_TO_USBDEV(sc)); uea_vdbg(INS_TO_USBDEV(sc), "Function : %d-%d, Address : %c%c%c%c, " "offset : 0x%04x, data : 0x%08x\n", - E1_FUNCTION_TYPE(function), E1_FUNCTION_SUBTYPE(function), - E1_GETSA1(address), E1_GETSA2(address), E1_GETSA3(address), + E1_FUNCTION_TYPE(function), + E1_FUNCTION_SUBTYPE(function), + E1_GETSA1(address), E1_GETSA2(address), + E1_GETSA3(address), E1_GETSA4(address), offset, data); /* we send a request, but we expect a reply */ @@ -1157,7 +1168,8 @@ static int uea_cmv_e1(struct uea_softc *sc, cmv.wOffsetAddress = cpu_to_le16(offset); put_unaligned_le32(data >> 16 | data << 16, &cmv.dwData); - ret = uea_request(sc, UEA_E1_SET_BLOCK, UEA_MPTX_START, sizeof(cmv), &cmv); + ret = uea_request(sc, UEA_E1_SET_BLOCK, UEA_MPTX_START, + sizeof(cmv), &cmv); if (ret < 0) return ret; ret = wait_cmv_ack(sc); @@ -1191,7 +1203,8 @@ static int uea_cmv_e4(struct uea_softc *sc, cmv.wOffset = cpu_to_be16(offset); cmv.dwData[0] = cpu_to_be32(data); - ret = uea_request(sc, UEA_E4_SET_BLOCK, UEA_MPTX_START, sizeof(cmv), &cmv); + ret = uea_request(sc, UEA_E4_SET_BLOCK, UEA_MPTX_START, + sizeof(cmv), &cmv); if (ret < 0) return ret; ret = wait_cmv_ack(sc); @@ -1208,7 +1221,7 @@ static inline int uea_read_cmv_e1(struct uea_softc *sc, uea_err(INS_TO_USBDEV(sc), "reading cmv failed with error %d\n", ret); else - *data = sc->data; + *data = sc->data; return ret; } @@ -1216,13 +1229,14 @@ static inline int uea_read_cmv_e1(struct uea_softc *sc, static inline int uea_read_cmv_e4(struct uea_softc *sc, u8 size, u16 group, u16 address, u16 offset, u32 *data) { - int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, E4_REQUESTREAD, size), + int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, + E4_REQUESTREAD, size), group, address, offset, 0); if (ret < 0) uea_err(INS_TO_USBDEV(sc), "reading cmv failed with error %d\n", ret); else { - *data = sc->data; + *data = sc->data; /* size is in 16-bit word quantities */ if (size > 2) *(data + 1) = sc->data1; @@ -1245,7 +1259,8 @@ static inline int uea_write_cmv_e1(struct uea_softc *sc, static inline int uea_write_cmv_e4(struct uea_softc *sc, u8 size, u16 group, u16 address, u16 offset, u32 data) { - int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, E4_REQUESTWRITE, size), + int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, + E4_REQUESTWRITE, size), group, address, offset, data); if (ret < 0) uea_err(INS_TO_USBDEV(sc), @@ -1442,27 +1457,29 @@ static int uea_stat_e4(struct uea_softc *sc) return ret; switch (sc->stats.phy.state) { - case 0x0: /* not yet synchronized */ - case 0x1: - case 0x3: - case 0x4: - uea_dbg(INS_TO_USBDEV(sc), "modem not yet synchronized\n"); - return 0; - case 0x5: /* initialization */ - case 0x6: - case 0x9: - case 0xa: - uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); - return 0; - case 0x2: /* fail ... */ - uea_info(INS_TO_USBDEV(sc), "modem synchronization failed" - " (may be try other cmv/dsp)\n"); - return -EAGAIN; - case 0x7: /* operational */ - break; - default: - uea_warn(INS_TO_USBDEV(sc), "unknown state: %x\n", sc->stats.phy.state); - return 0; + case 0x0: /* not yet synchronized */ + case 0x1: + case 0x3: + case 0x4: + uea_dbg(INS_TO_USBDEV(sc), "modem not yet " + "synchronized\n"); + return 0; + case 0x5: /* initialization */ + case 0x6: + case 0x9: + case 0xa: + uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); + return 0; + case 0x2: /* fail ... */ + uea_info(INS_TO_USBDEV(sc), "modem synchronization " + "failed (may be try other cmv/dsp)\n"); + return -EAGAIN; + case 0x7: /* operational */ + break; + default: + uea_warn(INS_TO_USBDEV(sc), "unknown state: %x\n", + sc->stats.phy.state); + return 0; } if (data != 7) { @@ -1502,9 +1519,9 @@ static int uea_stat_e4(struct uea_softc *sc) if (sc->stats.phy.flags) { uea_dbg(INS_TO_USBDEV(sc), "Stat flag = 0x%x\n", sc->stats.phy.flags); - if (sc->stats.phy.flags & 1) //delineation LOSS + if (sc->stats.phy.flags & 1) /* delineation LOSS */ return -EAGAIN; - if (sc->stats.phy.flags & 0x4000) //Reset Flag + if (sc->stats.phy.flags & 0x4000) /* Reset Flag */ return -EAGAIN; return 0; } @@ -1618,7 +1635,8 @@ static int request_cmvs(struct uea_softc *sc, if (ret < 0) { /* if caller can handle old version, try to provide it */ if (*ver == 1) { - uea_warn(INS_TO_USBDEV(sc), "requesting firmware %s failed, " + uea_warn(INS_TO_USBDEV(sc), "requesting " + "firmware %s failed, " "try to get older cmvs\n", cmv_name); return request_cmvs_old(sc, cmvs, fw); } @@ -1632,8 +1650,8 @@ static int request_cmvs(struct uea_softc *sc, data = (u8 *) (*fw)->data; if (size < 4 || strncmp(data, "cmv2", 4) != 0) { if (*ver == 1) { - uea_warn(INS_TO_USBDEV(sc), "firmware %s is corrupted, " - "try to get older cmvs\n", cmv_name); + uea_warn(INS_TO_USBDEV(sc), "firmware %s is corrupted," + " try to get older cmvs\n", cmv_name); release_firmware(*fw); return request_cmvs_old(sc, cmvs, fw); } @@ -1670,7 +1688,7 @@ static int uea_send_cmvs_e1(struct uea_softc *sc) int i, ret, len; void *cmvs_ptr; const struct firmware *cmvs_fw; - int ver = 1; // we can handle v1 cmv firmware version; + int ver = 1; /* we can handle v1 cmv firmware version; */ /* Enter in R-IDLE (cmv) until instructed otherwise */ ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 1); @@ -1685,7 +1703,7 @@ static int uea_send_cmvs_e1(struct uea_softc *sc) sc->stats.phy.firmid); /* get options */ - ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); + ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); if (ret < 0) return ret; @@ -1697,9 +1715,10 @@ static int uea_send_cmvs_e1(struct uea_softc *sc) "please update your firmware\n"); for (i = 0; i < len; i++) { - ret = uea_write_cmv_e1(sc, get_unaligned_le32(&cmvs_v1[i].address), - get_unaligned_le16(&cmvs_v1[i].offset), - get_unaligned_le32(&cmvs_v1[i].data)); + ret = uea_write_cmv_e1(sc, + get_unaligned_le32(&cmvs_v1[i].address), + get_unaligned_le16(&cmvs_v1[i].offset), + get_unaligned_le32(&cmvs_v1[i].data)); if (ret < 0) goto out; } @@ -1707,9 +1726,10 @@ static int uea_send_cmvs_e1(struct uea_softc *sc) struct uea_cmvs_v2 *cmvs_v2 = cmvs_ptr; for (i = 0; i < len; i++) { - ret = uea_write_cmv_e1(sc, get_unaligned_le32(&cmvs_v2[i].address), - (u16) get_unaligned_le32(&cmvs_v2[i].offset), - get_unaligned_le32(&cmvs_v2[i].data)); + ret = uea_write_cmv_e1(sc, + get_unaligned_le32(&cmvs_v2[i].address), + (u16) get_unaligned_le32(&cmvs_v2[i].offset), + get_unaligned_le32(&cmvs_v2[i].data)); if (ret < 0) goto out; } @@ -1722,7 +1742,8 @@ static int uea_send_cmvs_e1(struct uea_softc *sc) /* Enter in R-ACT-REQ */ ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 2); uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); - uea_info(INS_TO_USBDEV(sc), "modem started, waiting synchronization...\n"); + uea_info(INS_TO_USBDEV(sc), "modem started, waiting " + "synchronization...\n"); out: release_firmware(cmvs_fw); return ret; @@ -1733,7 +1754,7 @@ static int uea_send_cmvs_e4(struct uea_softc *sc) int i, ret, len; void *cmvs_ptr; const struct firmware *cmvs_fw; - int ver = 2; // we can only handle v2 cmv firmware version; + int ver = 2; /* we can only handle v2 cmv firmware version; */ /* Enter in R-IDLE (cmv) until instructed otherwise */ ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 1); @@ -1750,7 +1771,7 @@ static int uea_send_cmvs_e4(struct uea_softc *sc) /* get options */ - ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); + ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); if (ret < 0) return ret; @@ -1760,10 +1781,10 @@ static int uea_send_cmvs_e4(struct uea_softc *sc) for (i = 0; i < len; i++) { ret = uea_write_cmv_e4(sc, 1, - get_unaligned_le32(&cmvs_v2[i].group), - get_unaligned_le32(&cmvs_v2[i].address), - get_unaligned_le32(&cmvs_v2[i].offset), - get_unaligned_le32(&cmvs_v2[i].data)); + get_unaligned_le32(&cmvs_v2[i].group), + get_unaligned_le32(&cmvs_v2[i].address), + get_unaligned_le32(&cmvs_v2[i].offset), + get_unaligned_le32(&cmvs_v2[i].data)); if (ret < 0) goto out; } @@ -1776,7 +1797,8 @@ static int uea_send_cmvs_e4(struct uea_softc *sc) /* Enter in R-ACT-REQ */ ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 2); uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); - uea_info(INS_TO_USBDEV(sc), "modem started, waiting synchronization...\n"); + uea_info(INS_TO_USBDEV(sc), "modem started, waiting " + "synchronization...\n"); out: release_firmware(cmvs_fw); return ret; @@ -1812,7 +1834,7 @@ static int uea_start_reset(struct uea_softc *sc) uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_ON, 0, NULL); uea_request(sc, UEA_SET_MODE, UEA_BOOT_IDMA, 0, NULL); - /* enter reset mode */ + /* enter reset mode */ uea_request(sc, UEA_SET_MODE, UEA_START_RESET, 0, NULL); /* original driver use 200ms, but windows driver use 100ms */ @@ -1824,7 +1846,7 @@ static int uea_start_reset(struct uea_softc *sc) uea_request(sc, UEA_SET_MODE, UEA_END_RESET, 0, NULL); if (UEA_CHIP_VERSION(sc) != EAGLE_IV) { - /* clear tx and rx mailboxes */ + /* clear tx and rx mailboxes */ uea_request(sc, UEA_SET_2183_DATA, UEA_MPTX_MAILBOX, 2, &zero); uea_request(sc, UEA_SET_2183_DATA, UEA_MPRX_MAILBOX, 2, &zero); uea_request(sc, UEA_SET_2183_DATA, UEA_SWAP_MAILBOX, 2, &zero); @@ -1835,9 +1857,11 @@ static int uea_start_reset(struct uea_softc *sc) return ret; if (UEA_CHIP_VERSION(sc) == EAGLE_IV) - sc->cmv_dsc.e4.function = E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, E4_MODEMREADY, 1); + sc->cmv_dsc.e4.function = E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, + E4_MODEMREADY, 1); else - sc->cmv_dsc.e1.function = E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, E1_MODEMREADY); + sc->cmv_dsc.e1.function = E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, + E1_MODEMREADY); /* demask interrupt */ sc->booting = 0; @@ -1937,7 +1961,8 @@ static int load_XILINX_firmware(struct uea_softc *sc) value = 0; ret = uea_send_modem_cmd(sc->usb_dev, 0xe, 1, &value); if (ret < 0) - uea_err(sc->usb_dev, "elsa de-assert failed with error %d\n", ret); + uea_err(sc->usb_dev, "elsa de-assert failed with error" + " %d\n", ret); err1: release_firmware(fw_entry); @@ -1966,13 +1991,15 @@ static void uea_dispatch_cmv_e1(struct uea_softc *sc, struct intr_pkt *intr) if (UEA_CHIP_VERSION(sc) == ADI930 && cmv->bFunction == E1_MAKEFUNCTION(2, 2)) { cmv->wIndex = cpu_to_le16(dsc->idx); - put_unaligned_le32(dsc->address, &cmv->dwSymbolicAddress); + put_unaligned_le32(dsc->address, + &cmv->dwSymbolicAddress); cmv->wOffsetAddress = cpu_to_le16(dsc->offset); } else goto bad2; } - if (cmv->bFunction == E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, E1_MODEMREADY)) { + if (cmv->bFunction == E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, + E1_MODEMREADY)) { wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; @@ -2021,7 +2048,8 @@ static void uea_dispatch_cmv_e4(struct uea_softc *sc, struct intr_pkt *intr) if (be16_to_cpu(cmv->wFunction) != dsc->function) goto bad2; - if (be16_to_cpu(cmv->wFunction) == E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, E4_MODEMREADY, 1)) { + if (be16_to_cpu(cmv->wFunction) == E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, + E4_MODEMREADY, 1)) { wake_up_cmv_ack(sc); uea_leaves(INS_TO_USBDEV(sc)); return; @@ -2048,14 +2076,16 @@ bad2: return; } -static void uea_schedule_load_page_e1(struct uea_softc *sc, struct intr_pkt *intr) +static void uea_schedule_load_page_e1(struct uea_softc *sc, + struct intr_pkt *intr) { sc->pageno = intr->e1_bSwapPageNo; sc->ovl = intr->e1_bOvl >> 4 | intr->e1_bOvl << 4; queue_work(sc->work_q, &sc->task); } -static void uea_schedule_load_page_e4(struct uea_softc *sc, struct intr_pkt *intr) +static void uea_schedule_load_page_e4(struct uea_softc *sc, + struct intr_pkt *intr) { sc->pageno = intr->e4_bSwapPageNo; queue_work(sc->work_q, &sc->task); @@ -2263,8 +2293,8 @@ out: static DEVICE_ATTR(stat_status, S_IWUGO | S_IRUGO, read_status, reboot); -static ssize_t read_human_status(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t read_human_status(struct device *dev, + struct device_attribute *attr, char *buf) { int ret = -ENODEV; int modem_state; @@ -2289,7 +2319,7 @@ static ssize_t read_human_status(struct device *dev, struct device_attribute *at case 0xa: modem_state = 1; break; - case 0x7: /* operational */ + case 0x7: /* operational */ modem_state = 2; break; case 0x2: /* fail ... */ @@ -2324,7 +2354,8 @@ out: return ret; } -static DEVICE_ATTR(stat_human_status, S_IWUGO | S_IRUGO, read_human_status, NULL); +static DEVICE_ATTR(stat_human_status, S_IWUGO | S_IRUGO, + read_human_status, NULL); static ssize_t read_delin(struct device *dev, struct device_attribute *attr, char *buf) @@ -2358,25 +2389,25 @@ out: static DEVICE_ATTR(stat_delin, S_IWUGO | S_IRUGO, read_delin, NULL); -#define UEA_ATTR(name, reset) \ +#define UEA_ATTR(name, reset) \ \ -static ssize_t read_##name(struct device *dev, \ +static ssize_t read_##name(struct device *dev, \ struct device_attribute *attr, char *buf) \ -{ \ - int ret = -ENODEV; \ - struct uea_softc *sc; \ - \ - mutex_lock(&uea_mutex); \ +{ \ + int ret = -ENODEV; \ + struct uea_softc *sc; \ + \ + mutex_lock(&uea_mutex); \ sc = dev_to_uea(dev); \ - if (!sc) \ - goto out; \ + if (!sc) \ + goto out; \ ret = snprintf(buf, 10, "%08x\n", sc->stats.phy.name); \ if (reset) \ sc->stats.phy.name = 0; \ -out: \ - mutex_unlock(&uea_mutex); \ - return ret; \ -} \ +out: \ + mutex_unlock(&uea_mutex); \ + return ret; \ +} \ \ static DEVICE_ATTR(stat_##name, S_IRUGO, read_##name, NULL) @@ -2527,12 +2558,14 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf, else if (sc->driver_info & AUTO_ANNEX_B) sc->annex = ANNEXB; else - sc->annex = (le16_to_cpu(sc->usb_dev->descriptor.bcdDevice) & 0x80)?ANNEXB:ANNEXA; + sc->annex = (le16_to_cpu + (sc->usb_dev->descriptor.bcdDevice) & 0x80) ? ANNEXB : ANNEXA; alt = altsetting[sc->modem_index]; /* ADI930 don't support iso */ if (UEA_CHIP_VERSION(id) != ADI930 && alt > 0) { - if (alt <= 8 && usb_set_interface(usb, UEA_DS_IFACE_NO, alt) == 0) { + if (alt <= 8 && + usb_set_interface(usb, UEA_DS_IFACE_NO, alt) == 0) { uea_dbg(usb, "set alternate %u for 2 interface\n", alt); uea_info(usb, "using iso mode\n"); usbatm->flags |= UDSL_USE_ISOC | UDSL_IGNORE_EILSEQ; @@ -2621,40 +2654,74 @@ static void uea_disconnect(struct usb_interface *intf) * List of supported VID/PID */ static const struct usb_device_id uea_ids[] = { - {USB_DEVICE(ANALOG_VID, ADI930_PID_PREFIRM), .driver_info = ADI930 | PREFIRM}, - {USB_DEVICE(ANALOG_VID, ADI930_PID_PSTFIRM), .driver_info = ADI930 | PSTFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PREFIRM), .driver_info = EAGLE_III | PREFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PSTFIRM), .driver_info = EAGLE_III | PSTFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PREFIRM), .driver_info = EAGLE_IV | PREFIRM}, - {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PSTFIRM), .driver_info = EAGLE_IV | PSTFIRM}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_A}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PREFIRM), .driver_info = EAGLE_II | PREFIRM}, - {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PSTFIRM), .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_B}, - {USB_DEVICE(ELSA_VID, ELSA_PID_PREFIRM), .driver_info = ADI930 | PREFIRM}, - {USB_DEVICE(ELSA_VID, ELSA_PID_PSTFIRM), .driver_info = ADI930 | PSTFIRM}, - {USB_DEVICE(ELSA_VID, ELSA_PID_A_PREFIRM), .driver_info = ADI930 | PREFIRM}, - {USB_DEVICE(ELSA_VID, ELSA_PID_A_PSTFIRM), .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_A}, - {USB_DEVICE(ELSA_VID, ELSA_PID_B_PREFIRM), .driver_info = ADI930 | PREFIRM}, - {USB_DEVICE(ELSA_VID, ELSA_PID_B_PSTFIRM), .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_B}, - {USB_DEVICE(USR_VID, MILLER_A_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(USR_VID, MILLER_A_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, - {USB_DEVICE(USR_VID, MILLER_B_PID_PREFIRM), .driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(USR_VID, MILLER_B_PID_PSTFIRM), .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, - {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PREFIRM),.driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PSTFIRM),.driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, - {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PREFIRM),.driver_info = EAGLE_I | PREFIRM}, - {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PSTFIRM),.driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(ANALOG_VID, ADI930_PID_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ANALOG_VID, ADI930_PID_PSTFIRM), + .driver_info = ADI930 | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PREFIRM), + .driver_info = EAGLE_III | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PSTFIRM), + .driver_info = EAGLE_III | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PREFIRM), + .driver_info = EAGLE_IV | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PSTFIRM), + .driver_info = EAGLE_IV | PSTFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(ELSA_VID, ELSA_PID_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_PSTFIRM), + .driver_info = ADI930 | PSTFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_A_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_A_PSTFIRM), + .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(ELSA_VID, ELSA_PID_B_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_B_PSTFIRM), + .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(USR_VID, MILLER_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, MILLER_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(USR_VID, MILLER_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, MILLER_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, {} }; -- cgit v1.2.3-58-ga151 From 44526f91b887a71ebd5d534903d55dc8752b8cd3 Mon Sep 17 00:00:00 2001 From: Carlos Sánchez Acosta Date: Wed, 14 Apr 2010 06:58:53 -0500 Subject: USB: devices: fix Coding Styles MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixed coding styles in the config usb driver. Signed-off-by: Carlos Sánchez Acosta Signed-off-by: Alejandro Sánchez Acosta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devices.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 75077215a8b8..3449742c00e1 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -1,7 +1,8 @@ /* * devices.c * (C) Copyright 1999 Randy Dunlap. - * (C) Copyright 1999,2000 Thomas Sailer . (proc file per device) + * (C) Copyright 1999,2000 Thomas Sailer . + * (proc file per device) * (C) Copyright 1999 Deti Fliegl (new USB architecture) * * This program is free software; you can redistribute it and/or modify @@ -57,7 +58,7 @@ #include #include #include -#include +#include #include "usb.h" @@ -138,8 +139,8 @@ struct class_info { char *class_name; }; -static const struct class_info clas_info[] = -{ /* max. 5 chars. per name string */ +static const struct class_info clas_info[] = { + /* max. 5 chars. per name string */ {USB_CLASS_PER_INTERFACE, ">ifc"}, {USB_CLASS_AUDIO, "audio"}, {USB_CLASS_COMM, "comm."}, @@ -191,8 +192,10 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end, if (speed == USB_SPEED_HIGH) { switch (le16_to_cpu(desc->wMaxPacketSize) & (0x03 << 11)) { - case 1 << 11: bandwidth = 2; break; - case 2 << 11: bandwidth = 3; break; + case 1 << 11: + bandwidth = 2; break; + case 2 << 11: + bandwidth = 3; break; } } @@ -200,7 +203,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end, switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_CONTROL: type = "Ctrl"; - if (speed == USB_SPEED_HIGH) /* uframes per NAK */ + if (speed == USB_SPEED_HIGH) /* uframes per NAK */ interval = desc->bInterval; else interval = 0; -- cgit v1.2.3-58-ga151 From 997ea58eb92f9970b8af7aae48800d0ef43b9423 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 12 Apr 2010 13:17:25 +0200 Subject: USB: rename usb_buffer_alloc() and usb_buffer_free() users For more clearance what the functions actually do, usb_buffer_alloc() is renamed to usb_alloc_coherent() usb_buffer_free() is renamed to usb_free_coherent() They should only be used in code which really needs DMA coherency. All call sites have been changed accordingly, except for staging drivers. Signed-off-by: Daniel Mack Cc: Alan Stern Cc: Pedro Ribeiro Signed-off-by: Greg Kroah-Hartman --- Documentation/DocBook/writing_usb_driver.tmpl | 2 +- Documentation/usb/dma.txt | 4 +-- drivers/hid/usbhid/hid-core.c | 12 ++++---- drivers/hid/usbhid/usbkbd.c | 8 +++--- drivers/hid/usbhid/usbmouse.c | 6 ++-- drivers/input/joystick/xpad.c | 16 +++++------ drivers/input/misc/ati_remote.c | 12 ++++---- drivers/input/misc/ati_remote2.c | 4 +-- drivers/input/misc/cm109.c | 16 +++++------ drivers/input/misc/keyspan_remote.c | 6 ++-- drivers/input/misc/powermate.c | 8 +++--- drivers/input/misc/yealink.c | 14 ++++------ drivers/input/mouse/appletouch.c | 12 ++++---- drivers/input/mouse/bcm5974.c | 24 ++++++++-------- drivers/input/tablet/acecad.c | 6 ++-- drivers/input/tablet/aiptek.c | 14 +++++----- drivers/input/tablet/gtco.c | 12 ++++---- drivers/input/tablet/kbtab.c | 6 ++-- drivers/input/tablet/wacom_sys.c | 10 +++---- drivers/input/touchscreen/usbtouchscreen.c | 8 +++--- drivers/media/dvb/dvb-usb/usb-urb.c | 7 +++-- drivers/media/dvb/ttusb-dec/ttusb_dec.c | 6 ++-- drivers/media/video/au0828/au0828-video.c | 4 +-- drivers/media/video/cx231xx/cx231xx-core.c | 14 +++++----- drivers/media/video/em28xx/em28xx-core.c | 4 +-- drivers/media/video/gspca/benq.c | 4 +-- drivers/media/video/gspca/gspca.c | 30 ++++++++++---------- drivers/media/video/hdpvr/hdpvr-video.c | 8 +++--- drivers/media/video/tlg2300/pd-video.c | 14 +++++----- drivers/media/video/usbvision/usbvision-core.c | 16 +++++------ drivers/media/video/uvc/uvc_video.c | 4 +-- drivers/net/can/usb/ems_usb.c | 18 ++++++------ drivers/net/usb/ipheth.c | 24 +++++++--------- drivers/net/usb/kaweth.c | 12 ++++---- drivers/net/wireless/ath/ar9170/usb.c | 8 +++--- drivers/net/wireless/zd1211rw/zd_usb.c | 10 +++---- drivers/usb/class/cdc-acm.c | 22 +++++++-------- drivers/usb/class/cdc-wdm.c | 38 +++++++++++++------------- drivers/usb/class/usblp.c | 2 +- drivers/usb/misc/appledisplay.c | 6 ++-- drivers/usb/misc/ftdi-elan.c | 18 ++++++------ drivers/usb/misc/iowarrior.c | 12 ++++---- drivers/usb/misc/usblcd.c | 8 +++--- drivers/usb/misc/usbtest.c | 8 +++--- drivers/usb/storage/onetouch.c | 12 ++++---- drivers/usb/storage/usb.c | 4 +-- drivers/usb/usb-skeleton.c | 10 +++---- drivers/watchdog/pcwd_usb.c | 6 ++-- sound/usb/ua101.c | 16 +++++------ sound/usb/usbaudio.c | 18 ++++++------ sound/usb/usbmidi.c | 14 +++++----- 51 files changed, 286 insertions(+), 291 deletions(-) (limited to 'drivers') diff --git a/Documentation/DocBook/writing_usb_driver.tmpl b/Documentation/DocBook/writing_usb_driver.tmpl index eeff19ca831b..bd97a13fa5ae 100644 --- a/Documentation/DocBook/writing_usb_driver.tmpl +++ b/Documentation/DocBook/writing_usb_driver.tmpl @@ -342,7 +342,7 @@ static inline void skel_delete (struct usb_skel *dev) { kfree (dev->bulk_in_buffer); if (dev->bulk_out_buffer != NULL) - usb_buffer_free (dev->udev, dev->bulk_out_size, + usb_free_coherent (dev->udev, dev->bulk_out_size, dev->bulk_out_buffer, dev->write_urb->transfer_dma); usb_free_urb (dev->write_urb); diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt index cfdcd16e3abf..a37e59cf2786 100644 --- a/Documentation/usb/dma.txt +++ b/Documentation/usb/dma.txt @@ -43,10 +43,10 @@ and effects like cache-trashing can impose subtle penalties. kind of addresses to store in urb->transfer_buffer and urb->transfer_dma. You'd also set URB_NO_TRANSFER_DMA_MAP in urb->transfer_flags: - void *usb_buffer_alloc (struct usb_device *dev, size_t size, + void *usb_alloc_coherent (struct usb_device *dev, size_t size, int mem_flags, dma_addr_t *dma); - void usb_buffer_free (struct usb_device *dev, size_t size, + void usb_free_coherent (struct usb_device *dev, size_t size, void *addr, dma_addr_t dma); Most drivers should *NOT* be using these primitives; they don't need diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 6a510c9675fc..df619756b7ae 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -783,12 +783,12 @@ static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid) { struct usbhid_device *usbhid = hid->driver_data; - usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, + usbhid->inbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, &usbhid->inbuf_dma); - usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, + usbhid->outbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, &usbhid->outbuf_dma); usbhid->cr = kmalloc(sizeof(*usbhid->cr), GFP_KERNEL); - usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_KERNEL, + usbhid->ctrlbuf = usb_alloc_coherent(dev, usbhid->bufsize, GFP_KERNEL, &usbhid->ctrlbuf_dma); if (!usbhid->inbuf || !usbhid->outbuf || !usbhid->cr || !usbhid->ctrlbuf) @@ -843,10 +843,10 @@ static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid) { struct usbhid_device *usbhid = hid->driver_data; - usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); - usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); + usb_free_coherent(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma); + usb_free_coherent(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma); kfree(usbhid->cr); - usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); + usb_free_coherent(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma); } static int usbhid_parse(struct hid_device *hid) diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c index bdc7b09e8670..bb14c8270af3 100644 --- a/drivers/hid/usbhid/usbkbd.c +++ b/drivers/hid/usbhid/usbkbd.c @@ -196,11 +196,11 @@ static int usb_kbd_alloc_mem(struct usb_device *dev, struct usb_kbd *kbd) return -1; if (!(kbd->led = usb_alloc_urb(0, GFP_KERNEL))) return -1; - if (!(kbd->new = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &kbd->new_dma))) + if (!(kbd->new = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &kbd->new_dma))) return -1; if (!(kbd->cr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL))) return -1; - if (!(kbd->leds = usb_buffer_alloc(dev, 1, GFP_ATOMIC, &kbd->leds_dma))) + if (!(kbd->leds = usb_alloc_coherent(dev, 1, GFP_ATOMIC, &kbd->leds_dma))) return -1; return 0; @@ -210,9 +210,9 @@ static void usb_kbd_free_mem(struct usb_device *dev, struct usb_kbd *kbd) { usb_free_urb(kbd->irq); usb_free_urb(kbd->led); - usb_buffer_free(dev, 8, kbd->new, kbd->new_dma); + usb_free_coherent(dev, 8, kbd->new, kbd->new_dma); kfree(kbd->cr); - usb_buffer_free(dev, 1, kbd->leds, kbd->leds_dma); + usb_free_coherent(dev, 1, kbd->leds, kbd->leds_dma); } static int usb_kbd_probe(struct usb_interface *iface, diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c index 72ab4b268096..79b2bf81a059 100644 --- a/drivers/hid/usbhid/usbmouse.c +++ b/drivers/hid/usbhid/usbmouse.c @@ -142,7 +142,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i if (!mouse || !input_dev) goto fail1; - mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma); + mouse->data = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &mouse->data_dma); if (!mouse->data) goto fail1; @@ -205,7 +205,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i fail3: usb_free_urb(mouse->irq); fail2: - usb_buffer_free(dev, 8, mouse->data, mouse->data_dma); + usb_free_coherent(dev, 8, mouse->data, mouse->data_dma); fail1: input_free_device(input_dev); kfree(mouse); @@ -221,7 +221,7 @@ static void usb_mouse_disconnect(struct usb_interface *intf) usb_kill_urb(mouse->irq); input_unregister_device(mouse->dev); usb_free_urb(mouse->irq); - usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma); + usb_free_coherent(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma); kfree(mouse); } } diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 9b3353b404da..c1087ce4cef9 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -533,8 +533,8 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX) return 0; - xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN, - GFP_KERNEL, &xpad->odata_dma); + xpad->odata = usb_alloc_coherent(xpad->udev, XPAD_PKT_LEN, + GFP_KERNEL, &xpad->odata_dma); if (!xpad->odata) goto fail1; @@ -554,7 +554,7 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) return 0; - fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma); + fail2: usb_free_coherent(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma); fail1: return error; } @@ -568,7 +568,7 @@ static void xpad_deinit_output(struct usb_xpad *xpad) { if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX) { usb_free_urb(xpad->irq_out); - usb_buffer_free(xpad->udev, XPAD_PKT_LEN, + usb_free_coherent(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma); } } @@ -788,8 +788,8 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id if (!xpad || !input_dev) goto fail1; - xpad->idata = usb_buffer_alloc(udev, XPAD_PKT_LEN, - GFP_KERNEL, &xpad->idata_dma); + xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN, + GFP_KERNEL, &xpad->idata_dma); if (!xpad->idata) goto fail1; @@ -942,7 +942,7 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id fail5: usb_kill_urb(xpad->irq_in); fail4: usb_free_urb(xpad->irq_in); fail3: xpad_deinit_output(xpad); - fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); + fail2: usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); fail1: input_free_device(input_dev); kfree(xpad); return error; @@ -964,7 +964,7 @@ static void xpad_disconnect(struct usb_interface *intf) usb_kill_urb(xpad->irq_in); } usb_free_urb(xpad->irq_in); - usb_buffer_free(xpad->udev, XPAD_PKT_LEN, + usb_free_coherent(xpad->udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); kfree(xpad); } diff --git a/drivers/input/misc/ati_remote.c b/drivers/input/misc/ati_remote.c index e8bbc619f6df..bce57129afba 100644 --- a/drivers/input/misc/ati_remote.c +++ b/drivers/input/misc/ati_remote.c @@ -624,13 +624,13 @@ static void ati_remote_irq_in(struct urb *urb) static int ati_remote_alloc_buffers(struct usb_device *udev, struct ati_remote *ati_remote) { - ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, GFP_ATOMIC, - &ati_remote->inbuf_dma); + ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, + &ati_remote->inbuf_dma); if (!ati_remote->inbuf) return -1; - ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, GFP_ATOMIC, - &ati_remote->outbuf_dma); + ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, + &ati_remote->outbuf_dma); if (!ati_remote->outbuf) return -1; @@ -653,10 +653,10 @@ static void ati_remote_free_buffers(struct ati_remote *ati_remote) usb_free_urb(ati_remote->irq_urb); usb_free_urb(ati_remote->out_urb); - usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, + usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, ati_remote->inbuf, ati_remote->inbuf_dma); - usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, + usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, ati_remote->outbuf, ati_remote->outbuf_dma); } diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c index 2124b99378bb..e148749b5851 100644 --- a/drivers/input/misc/ati_remote2.c +++ b/drivers/input/misc/ati_remote2.c @@ -589,7 +589,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2) int i, pipe, maxp; for (i = 0; i < 2; i++) { - ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]); + ar2->buf[i] = usb_alloc_coherent(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]); if (!ar2->buf[i]) return -ENOMEM; @@ -617,7 +617,7 @@ static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2) for (i = 0; i < 2; i++) { usb_free_urb(ar2->urb[i]); - usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]); + usb_free_coherent(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]); } } diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c index 8d2d291ee508..2b0eba6619bd 100644 --- a/drivers/input/misc/cm109.c +++ b/drivers/input/misc/cm109.c @@ -630,11 +630,11 @@ static void cm109_usb_cleanup(struct cm109_dev *dev) { kfree(dev->ctl_req); if (dev->ctl_data) - usb_buffer_free(dev->udev, USB_PKT_LEN, - dev->ctl_data, dev->ctl_dma); + usb_free_coherent(dev->udev, USB_PKT_LEN, + dev->ctl_data, dev->ctl_dma); if (dev->irq_data) - usb_buffer_free(dev->udev, USB_PKT_LEN, - dev->irq_data, dev->irq_dma); + usb_free_coherent(dev->udev, USB_PKT_LEN, + dev->irq_data, dev->irq_dma); usb_free_urb(dev->urb_irq); /* parameter validation in core/urb */ usb_free_urb(dev->urb_ctl); /* parameter validation in core/urb */ @@ -683,13 +683,13 @@ static int cm109_usb_probe(struct usb_interface *intf, goto err_out; /* allocate usb buffers */ - dev->irq_data = usb_buffer_alloc(udev, USB_PKT_LEN, - GFP_KERNEL, &dev->irq_dma); + dev->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN, + GFP_KERNEL, &dev->irq_dma); if (!dev->irq_data) goto err_out; - dev->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN, - GFP_KERNEL, &dev->ctl_dma); + dev->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN, + GFP_KERNEL, &dev->ctl_dma); if (!dev->ctl_data) goto err_out; diff --git a/drivers/input/misc/keyspan_remote.c b/drivers/input/misc/keyspan_remote.c index 86afdd1fdf9d..a93c525475c6 100644 --- a/drivers/input/misc/keyspan_remote.c +++ b/drivers/input/misc/keyspan_remote.c @@ -464,7 +464,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic remote->in_endpoint = endpoint; remote->toggle = -1; /* Set to -1 so we will always not match the toggle from the first remote message. */ - remote->in_buffer = usb_buffer_alloc(udev, RECV_SIZE, GFP_ATOMIC, &remote->in_dma); + remote->in_buffer = usb_alloc_coherent(udev, RECV_SIZE, GFP_ATOMIC, &remote->in_dma); if (!remote->in_buffer) { error = -ENOMEM; goto fail1; @@ -543,7 +543,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic return 0; fail3: usb_free_urb(remote->irq_urb); - fail2: usb_buffer_free(udev, RECV_SIZE, remote->in_buffer, remote->in_dma); + fail2: usb_free_coherent(udev, RECV_SIZE, remote->in_buffer, remote->in_dma); fail1: kfree(remote); input_free_device(input_dev); @@ -564,7 +564,7 @@ static void keyspan_disconnect(struct usb_interface *interface) input_unregister_device(remote->input); usb_kill_urb(remote->irq_urb); usb_free_urb(remote->irq_urb); - usb_buffer_free(remote->udev, RECV_SIZE, remote->in_buffer, remote->in_dma); + usb_free_coherent(remote->udev, RECV_SIZE, remote->in_buffer, remote->in_dma); kfree(remote); } } diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c index 7ba4b5f53fc2..bf170f6b4422 100644 --- a/drivers/input/misc/powermate.c +++ b/drivers/input/misc/powermate.c @@ -273,8 +273,8 @@ static int powermate_input_event(struct input_dev *dev, unsigned int type, unsig static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_device *pm) { - pm->data = usb_buffer_alloc(udev, POWERMATE_PAYLOAD_SIZE_MAX, - GFP_ATOMIC, &pm->data_dma); + pm->data = usb_alloc_coherent(udev, POWERMATE_PAYLOAD_SIZE_MAX, + GFP_ATOMIC, &pm->data_dma); if (!pm->data) return -1; @@ -287,8 +287,8 @@ static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_dev static void powermate_free_buffers(struct usb_device *udev, struct powermate_device *pm) { - usb_buffer_free(udev, POWERMATE_PAYLOAD_SIZE_MAX, - pm->data, pm->data_dma); + usb_free_coherent(udev, POWERMATE_PAYLOAD_SIZE_MAX, + pm->data, pm->data_dma); kfree(pm->configcr); } diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c index 2828328e9dd0..41201c6b5e68 100644 --- a/drivers/input/misc/yealink.c +++ b/drivers/input/misc/yealink.c @@ -836,10 +836,8 @@ static int usb_cleanup(struct yealink_dev *yld, int err) usb_free_urb(yld->urb_ctl); kfree(yld->ctl_req); - usb_buffer_free(yld->udev, USB_PKT_LEN, - yld->ctl_data, yld->ctl_dma); - usb_buffer_free(yld->udev, USB_PKT_LEN, - yld->irq_data, yld->irq_dma); + usb_free_coherent(yld->udev, USB_PKT_LEN, yld->ctl_data, yld->ctl_dma); + usb_free_coherent(yld->udev, USB_PKT_LEN, yld->irq_data, yld->irq_dma); kfree(yld); return err; @@ -884,13 +882,13 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id) return usb_cleanup(yld, -ENOMEM); /* allocate usb buffers */ - yld->irq_data = usb_buffer_alloc(udev, USB_PKT_LEN, - GFP_ATOMIC, &yld->irq_dma); + yld->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN, + GFP_ATOMIC, &yld->irq_dma); if (yld->irq_data == NULL) return usb_cleanup(yld, -ENOMEM); - yld->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN, - GFP_ATOMIC, &yld->ctl_dma); + yld->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN, + GFP_ATOMIC, &yld->ctl_dma); if (!yld->ctl_data) return usb_cleanup(yld, -ENOMEM); diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c index 53ec7ddd1826..05edd75abca0 100644 --- a/drivers/input/mouse/appletouch.c +++ b/drivers/input/mouse/appletouch.c @@ -806,8 +806,8 @@ static int atp_probe(struct usb_interface *iface, if (!dev->urb) goto err_free_devs; - dev->data = usb_buffer_alloc(dev->udev, dev->info->datalen, GFP_KERNEL, - &dev->urb->transfer_dma); + dev->data = usb_alloc_coherent(dev->udev, dev->info->datalen, GFP_KERNEL, + &dev->urb->transfer_dma); if (!dev->data) goto err_free_urb; @@ -862,8 +862,8 @@ static int atp_probe(struct usb_interface *iface, return 0; err_free_buffer: - usb_buffer_free(dev->udev, dev->info->datalen, - dev->data, dev->urb->transfer_dma); + usb_free_coherent(dev->udev, dev->info->datalen, + dev->data, dev->urb->transfer_dma); err_free_urb: usb_free_urb(dev->urb); err_free_devs: @@ -881,8 +881,8 @@ static void atp_disconnect(struct usb_interface *iface) if (dev) { usb_kill_urb(dev->urb); input_unregister_device(dev->input); - usb_buffer_free(dev->udev, dev->info->datalen, - dev->data, dev->urb->transfer_dma); + usb_free_coherent(dev->udev, dev->info->datalen, + dev->data, dev->urb->transfer_dma); usb_free_urb(dev->urb); kfree(dev); } diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index b89879bd860f..6dedded27222 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -715,15 +715,15 @@ static int bcm5974_probe(struct usb_interface *iface, if (!dev->tp_urb) goto err_free_bt_urb; - dev->bt_data = usb_buffer_alloc(dev->udev, - dev->cfg.bt_datalen, GFP_KERNEL, - &dev->bt_urb->transfer_dma); + dev->bt_data = usb_alloc_coherent(dev->udev, + dev->cfg.bt_datalen, GFP_KERNEL, + &dev->bt_urb->transfer_dma); if (!dev->bt_data) goto err_free_urb; - dev->tp_data = usb_buffer_alloc(dev->udev, - dev->cfg.tp_datalen, GFP_KERNEL, - &dev->tp_urb->transfer_dma); + dev->tp_data = usb_alloc_coherent(dev->udev, + dev->cfg.tp_datalen, GFP_KERNEL, + &dev->tp_urb->transfer_dma); if (!dev->tp_data) goto err_free_bt_buffer; @@ -765,10 +765,10 @@ static int bcm5974_probe(struct usb_interface *iface, return 0; err_free_buffer: - usb_buffer_free(dev->udev, dev->cfg.tp_datalen, + usb_free_coherent(dev->udev, dev->cfg.tp_datalen, dev->tp_data, dev->tp_urb->transfer_dma); err_free_bt_buffer: - usb_buffer_free(dev->udev, dev->cfg.bt_datalen, + usb_free_coherent(dev->udev, dev->cfg.bt_datalen, dev->bt_data, dev->bt_urb->transfer_dma); err_free_urb: usb_free_urb(dev->tp_urb); @@ -788,10 +788,10 @@ static void bcm5974_disconnect(struct usb_interface *iface) usb_set_intfdata(iface, NULL); input_unregister_device(dev->input); - usb_buffer_free(dev->udev, dev->cfg.tp_datalen, - dev->tp_data, dev->tp_urb->transfer_dma); - usb_buffer_free(dev->udev, dev->cfg.bt_datalen, - dev->bt_data, dev->bt_urb->transfer_dma); + usb_free_coherent(dev->udev, dev->cfg.tp_datalen, + dev->tp_data, dev->tp_urb->transfer_dma); + usb_free_coherent(dev->udev, dev->cfg.bt_datalen, + dev->bt_data, dev->bt_urb->transfer_dma); usb_free_urb(dev->tp_urb); usb_free_urb(dev->bt_urb); kfree(dev); diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c index 670c61c5a516..c0470163dc67 100644 --- a/drivers/input/tablet/acecad.c +++ b/drivers/input/tablet/acecad.c @@ -155,7 +155,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_ goto fail1; } - acecad->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &acecad->data_dma); + acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); if (!acecad->data) { err= -ENOMEM; goto fail1; @@ -241,7 +241,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_ return 0; - fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma); + fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); fail1: input_free_device(input_dev); kfree(acecad); return err; @@ -256,7 +256,7 @@ static void usb_acecad_disconnect(struct usb_interface *intf) usb_kill_urb(acecad->irq); input_unregister_device(acecad->input); usb_free_urb(acecad->irq); - usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma); + usb_free_coherent(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma); kfree(acecad); } } diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c index 4be039d7dcad..51b80b08d467 100644 --- a/drivers/input/tablet/aiptek.c +++ b/drivers/input/tablet/aiptek.c @@ -1711,8 +1711,8 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id) goto fail1; } - aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH, - GFP_ATOMIC, &aiptek->data_dma); + aiptek->data = usb_alloc_coherent(usbdev, AIPTEK_PACKET_LENGTH, + GFP_ATOMIC, &aiptek->data_dma); if (!aiptek->data) { dev_warn(&intf->dev, "cannot allocate usb buffer\n"); goto fail1; @@ -1884,8 +1884,8 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id) fail4: sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group); fail3: usb_free_urb(aiptek->urb); - fail2: usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data, - aiptek->data_dma); + fail2: usb_free_coherent(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data, + aiptek->data_dma); fail1: usb_set_intfdata(intf, NULL); input_free_device(inputdev); kfree(aiptek); @@ -1909,9 +1909,9 @@ static void aiptek_disconnect(struct usb_interface *intf) input_unregister_device(aiptek->inputdev); sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group); usb_free_urb(aiptek->urb); - usb_buffer_free(interface_to_usbdev(intf), - AIPTEK_PACKET_LENGTH, - aiptek->data, aiptek->data_dma); + usb_free_coherent(interface_to_usbdev(intf), + AIPTEK_PACKET_LENGTH, + aiptek->data, aiptek->data_dma); kfree(aiptek); } } diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c index 866a9ee1af1a..8ea6afe2e992 100644 --- a/drivers/input/tablet/gtco.c +++ b/drivers/input/tablet/gtco.c @@ -850,8 +850,8 @@ static int gtco_probe(struct usb_interface *usbinterface, gtco->usbdev = usb_get_dev(interface_to_usbdev(usbinterface)); /* Allocate some data for incoming reports */ - gtco->buffer = usb_buffer_alloc(gtco->usbdev, REPORT_MAX_SIZE, - GFP_KERNEL, >co->buf_dma); + gtco->buffer = usb_alloc_coherent(gtco->usbdev, REPORT_MAX_SIZE, + GFP_KERNEL, >co->buf_dma); if (!gtco->buffer) { err("No more memory for us buffers"); error = -ENOMEM; @@ -982,8 +982,8 @@ static int gtco_probe(struct usb_interface *usbinterface, err_free_urb: usb_free_urb(gtco->urbinfo); err_free_buf: - usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE, - gtco->buffer, gtco->buf_dma); + usb_free_coherent(gtco->usbdev, REPORT_MAX_SIZE, + gtco->buffer, gtco->buf_dma); err_free_devs: input_free_device(input_dev); kfree(gtco); @@ -1005,8 +1005,8 @@ static void gtco_disconnect(struct usb_interface *interface) input_unregister_device(gtco->inputdevice); usb_kill_urb(gtco->urbinfo); usb_free_urb(gtco->urbinfo); - usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE, - gtco->buffer, gtco->buf_dma); + usb_free_coherent(gtco->usbdev, REPORT_MAX_SIZE, + gtco->buffer, gtco->buf_dma); kfree(gtco); } diff --git a/drivers/input/tablet/kbtab.c b/drivers/input/tablet/kbtab.c index 6682b17bf844..d31b9c793554 100644 --- a/drivers/input/tablet/kbtab.c +++ b/drivers/input/tablet/kbtab.c @@ -129,7 +129,7 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i if (!kbtab || !input_dev) goto fail1; - kbtab->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &kbtab->data_dma); + kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma); if (!kbtab->data) goto fail1; @@ -182,7 +182,7 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i return 0; fail3: usb_free_urb(kbtab->irq); - fail2: usb_buffer_free(dev, 10, kbtab->data, kbtab->data_dma); + fail2: usb_free_coherent(dev, 10, kbtab->data, kbtab->data_dma); fail1: input_free_device(input_dev); kfree(kbtab); return error; @@ -197,7 +197,7 @@ static void kbtab_disconnect(struct usb_interface *intf) usb_kill_urb(kbtab->irq); input_unregister_device(kbtab->dev); usb_free_urb(kbtab->irq); - usb_buffer_free(interface_to_usbdev(intf), 10, kbtab->data, kbtab->data_dma); + usb_free_coherent(interface_to_usbdev(intf), 10, kbtab->data, kbtab->data_dma); kfree(kbtab); } } diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index f46502589e4e..191197cd83e3 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -556,8 +556,8 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i goto fail1; } - wacom_wac->data = usb_buffer_alloc(dev, WACOM_PKGLEN_MAX, - GFP_KERNEL, &wacom->data_dma); + wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX, + GFP_KERNEL, &wacom->data_dma); if (!wacom_wac->data) { error = -ENOMEM; goto fail1; @@ -633,7 +633,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i return 0; fail3: usb_free_urb(wacom->irq); - fail2: usb_buffer_free(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma); + fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma); fail1: input_free_device(input_dev); kfree(wacom); kfree(wacom_wac); @@ -649,8 +649,8 @@ static void wacom_disconnect(struct usb_interface *intf) usb_kill_urb(wacom->irq); input_unregister_device(wacom->dev); usb_free_urb(wacom->irq); - usb_buffer_free(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, - wacom->wacom_wac->data, wacom->data_dma); + usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, + wacom->wacom_wac->data, wacom->data_dma); kfree(wacom->wacom_wac); kfree(wacom); } diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 99330bbdbac7..ea41a851ddfd 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -1291,8 +1291,8 @@ static void usbtouch_close(struct input_dev *input) static void usbtouch_free_buffers(struct usb_device *udev, struct usbtouch_usb *usbtouch) { - usb_buffer_free(udev, usbtouch->type->rept_size, - usbtouch->data, usbtouch->data_dma); + usb_free_coherent(udev, usbtouch->type->rept_size, + usbtouch->data, usbtouch->data_dma); kfree(usbtouch->buffer); } @@ -1336,8 +1336,8 @@ static int usbtouch_probe(struct usb_interface *intf, if (!type->process_pkt) type->process_pkt = usbtouch_process_pkt; - usbtouch->data = usb_buffer_alloc(udev, type->rept_size, - GFP_KERNEL, &usbtouch->data_dma); + usbtouch->data = usb_alloc_coherent(udev, type->rept_size, + GFP_KERNEL, &usbtouch->data_dma); if (!usbtouch->data) goto out_free; diff --git a/drivers/media/dvb/dvb-usb/usb-urb.c b/drivers/media/dvb/dvb-usb/usb-urb.c index f9702e3756b6..86d68933b6b4 100644 --- a/drivers/media/dvb/dvb-usb/usb-urb.c +++ b/drivers/media/dvb/dvb-usb/usb-urb.c @@ -96,8 +96,9 @@ static int usb_free_stream_buffers(struct usb_data_stream *stream) while (stream->buf_num) { stream->buf_num--; deb_mem("freeing buffer %d\n",stream->buf_num); - usb_buffer_free(stream->udev, stream->buf_size, - stream->buf_list[stream->buf_num], stream->dma_addr[stream->buf_num]); + usb_free_coherent(stream->udev, stream->buf_size, + stream->buf_list[stream->buf_num], + stream->dma_addr[stream->buf_num]); } } @@ -116,7 +117,7 @@ static int usb_allocate_stream_buffers(struct usb_data_stream *stream, int num, for (stream->buf_num = 0; stream->buf_num < num; stream->buf_num++) { deb_mem("allocating buffer %d\n",stream->buf_num); if (( stream->buf_list[stream->buf_num] = - usb_buffer_alloc(stream->udev, size, GFP_ATOMIC, + usb_alloc_coherent(stream->udev, size, GFP_ATOMIC, &stream->dma_addr[stream->buf_num]) ) == NULL) { deb_mem("not enough memory for urb-buffer allocation.\n"); usb_free_stream_buffers(stream); diff --git a/drivers/media/dvb/ttusb-dec/ttusb_dec.c b/drivers/media/dvb/ttusb-dec/ttusb_dec.c index 53baccbab17f..fe1b8037b247 100644 --- a/drivers/media/dvb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/dvb/ttusb-dec/ttusb_dec.c @@ -1257,7 +1257,7 @@ static int ttusb_dec_init_usb(struct ttusb_dec *dec) if(!dec->irq_urb) { return -ENOMEM; } - dec->irq_buffer = usb_buffer_alloc(dec->udev,IRQ_PACKET_SIZE, + dec->irq_buffer = usb_alloc_coherent(dec->udev,IRQ_PACKET_SIZE, GFP_ATOMIC, &dec->irq_dma_handle); if(!dec->irq_buffer) { usb_free_urb(dec->irq_urb); @@ -1550,8 +1550,8 @@ static void ttusb_dec_exit_rc(struct ttusb_dec *dec) usb_free_urb(dec->irq_urb); - usb_buffer_free(dec->udev,IRQ_PACKET_SIZE, - dec->irq_buffer, dec->irq_dma_handle); + usb_free_coherent(dec->udev,IRQ_PACKET_SIZE, + dec->irq_buffer, dec->irq_dma_handle); if (dec->rc_input_dev) { input_unregister_device(dec->rc_input_dev); diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c index 8c140c01c5e6..a2a0f79a84f3 100644 --- a/drivers/media/video/au0828/au0828-video.c +++ b/drivers/media/video/au0828/au0828-video.c @@ -177,7 +177,7 @@ void au0828_uninit_isoc(struct au0828_dev *dev) usb_unlink_urb(urb); if (dev->isoc_ctl.transfer_buffer[i]) { - usb_buffer_free(dev->usbdev, + usb_free_coherent(dev->usbdev, urb->transfer_buffer_length, dev->isoc_ctl.transfer_buffer[i], urb->transfer_dma); @@ -247,7 +247,7 @@ int au0828_init_isoc(struct au0828_dev *dev, int max_packets, } dev->isoc_ctl.urb[i] = urb; - dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->usbdev, + dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev, sb_size, GFP_KERNEL, &urb->transfer_dma); if (!dev->isoc_ctl.transfer_buffer[i]) { printk("unable to allocate %i bytes for transfer" diff --git a/drivers/media/video/cx231xx/cx231xx-core.c b/drivers/media/video/cx231xx/cx231xx-core.c index b24eee115e7e..6ccd87d5fb98 100644 --- a/drivers/media/video/cx231xx/cx231xx-core.c +++ b/drivers/media/video/cx231xx/cx231xx-core.c @@ -679,11 +679,11 @@ void cx231xx_uninit_isoc(struct cx231xx *dev) usb_unlink_urb(urb); if (dev->video_mode.isoc_ctl.transfer_buffer[i]) { - usb_buffer_free(dev->udev, - urb->transfer_buffer_length, - dev->video_mode.isoc_ctl. - transfer_buffer[i], - urb->transfer_dma); + usb_free_coherent(dev->udev, + urb->transfer_buffer_length, + dev->video_mode.isoc_ctl. + transfer_buffer[i], + urb->transfer_dma); } usb_free_urb(urb); dev->video_mode.isoc_ctl.urb[i] = NULL; @@ -770,8 +770,8 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, dev->video_mode.isoc_ctl.urb[i] = urb; dev->video_mode.isoc_ctl.transfer_buffer[i] = - usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL, - &urb->transfer_dma); + usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL, + &urb->transfer_dma); if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) { cx231xx_err("unable to allocate %i bytes for transfer" " buffer %i%s\n", diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index a41cc5566778..d4a95546504d 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -966,7 +966,7 @@ void em28xx_uninit_isoc(struct em28xx *dev) usb_unlink_urb(urb); if (dev->isoc_ctl.transfer_buffer[i]) { - usb_buffer_free(dev->udev, + usb_free_coherent(dev->udev, urb->transfer_buffer_length, dev->isoc_ctl.transfer_buffer[i], urb->transfer_dma); @@ -1041,7 +1041,7 @@ int em28xx_init_isoc(struct em28xx *dev, int max_packets, } dev->isoc_ctl.urb[i] = urb; - dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev, + dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL, &urb->transfer_dma); if (!dev->isoc_ctl.transfer_buffer[i]) { em28xx_err("unable to allocate %i bytes for transfer" diff --git a/drivers/media/video/gspca/benq.c b/drivers/media/video/gspca/benq.c index 43ac4af8d3ed..fce8d9492641 100644 --- a/drivers/media/video/gspca/benq.c +++ b/drivers/media/video/gspca/benq.c @@ -117,13 +117,13 @@ static int sd_start(struct gspca_dev *gspca_dev) return -ENOMEM; } gspca_dev->urb[n] = urb; - urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev, + urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, SD_PKT_SZ * SD_NPKT, GFP_KERNEL, &urb->transfer_dma); if (urb->transfer_buffer == NULL) { - err("usb_buffer_alloc failed"); + err("usb_alloc_coherent failed"); return -ENOMEM; } urb->dev = gspca_dev->dev; diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 222af479150b..00713f81d1e2 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -213,7 +213,7 @@ static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev, goto error; } - buffer = usb_buffer_alloc(dev, ep->wMaxPacketSize, + buffer = usb_alloc_coherent(dev, ep->wMaxPacketSize, GFP_KERNEL, &urb->transfer_dma); if (!buffer) { ret = -ENOMEM; @@ -232,10 +232,10 @@ static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev, return ret; error_submit: - usb_buffer_free(dev, - urb->transfer_buffer_length, - urb->transfer_buffer, - urb->transfer_dma); + usb_free_coherent(dev, + urb->transfer_buffer_length, + urb->transfer_buffer, + urb->transfer_dma); error_buffer: usb_free_urb(urb); error: @@ -272,10 +272,10 @@ static void gspca_input_destroy_urb(struct gspca_dev *gspca_dev) if (urb) { gspca_dev->int_urb = NULL; usb_kill_urb(urb); - usb_buffer_free(gspca_dev->dev, - urb->transfer_buffer_length, - urb->transfer_buffer, - urb->transfer_dma); + usb_free_coherent(gspca_dev->dev, + urb->transfer_buffer_length, + urb->transfer_buffer, + urb->transfer_dma); usb_free_urb(urb); } } @@ -597,10 +597,10 @@ static void destroy_urbs(struct gspca_dev *gspca_dev) gspca_dev->urb[i] = NULL; usb_kill_urb(urb); if (urb->transfer_buffer != NULL) - usb_buffer_free(gspca_dev->dev, - urb->transfer_buffer_length, - urb->transfer_buffer, - urb->transfer_dma); + usb_free_coherent(gspca_dev->dev, + urb->transfer_buffer_length, + urb->transfer_buffer, + urb->transfer_dma); usb_free_urb(urb); } } @@ -721,13 +721,13 @@ static int create_urbs(struct gspca_dev *gspca_dev, return -ENOMEM; } gspca_dev->urb[n] = urb; - urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev, + urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, bsize, GFP_KERNEL, &urb->transfer_dma); if (urb->transfer_buffer == NULL) { - err("usb_buffer_alloc failed"); + err("usb_alloc_coherent failed"); return -ENOMEM; } urb->dev = gspca_dev->dev; diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c index 196f82de48f0..b65efe25b31d 100644 --- a/drivers/media/video/hdpvr/hdpvr-video.c +++ b/drivers/media/video/hdpvr/hdpvr-video.c @@ -92,8 +92,8 @@ static int hdpvr_free_queue(struct list_head *q) buf = list_entry(p, struct hdpvr_buffer, buff_list); urb = buf->urb; - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); tmp = p->next; list_del(p); @@ -143,8 +143,8 @@ int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count) } buf->urb = urb; - mem = usb_buffer_alloc(dev->udev, dev->bulk_in_size, GFP_KERNEL, - &urb->transfer_dma); + mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL, + &urb->transfer_dma); if (!mem) { v4l2_err(&dev->v4l2_dev, "cannot allocate usb transfer buffer\n"); diff --git a/drivers/media/video/tlg2300/pd-video.c b/drivers/media/video/tlg2300/pd-video.c index cf8f18c007e6..7bc29065e1ad 100644 --- a/drivers/media/video/tlg2300/pd-video.c +++ b/drivers/media/video/tlg2300/pd-video.c @@ -476,10 +476,10 @@ static int prepare_iso_urb(struct video_data *video) goto out; video->urb_array[i] = urb; - mem = usb_buffer_alloc(udev, - ISO_PKT_SIZE * PK_PER_URB, - GFP_KERNEL, - &urb->transfer_dma); + mem = usb_alloc_coherent(udev, + ISO_PKT_SIZE * PK_PER_URB, + GFP_KERNEL, + &urb->transfer_dma); urb->complete = urb_complete_iso; /* handler */ urb->dev = udev; @@ -519,8 +519,8 @@ int alloc_bulk_urbs_generic(struct urb **urb_array, int num, if (urb == NULL) return i; - mem = usb_buffer_alloc(udev, buf_size, gfp_flags, - &urb->transfer_dma); + mem = usb_alloc_coherent(udev, buf_size, gfp_flags, + &urb->transfer_dma); if (mem == NULL) return i; @@ -540,7 +540,7 @@ void free_all_urb_generic(struct urb **urb_array, int num) for (i = 0; i < num; i++) { urb = urb_array[i]; if (urb) { - usb_buffer_free(urb->dev, + usb_free_coherent(urb->dev, urb->transfer_buffer_length, urb->transfer_buffer, urb->transfer_dma); diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c index f7aae2293758..b9dd74fde212 100644 --- a/drivers/media/video/usbvision/usbvision-core.c +++ b/drivers/media/video/usbvision/usbvision-core.c @@ -2493,10 +2493,10 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision) } usbvision->sbuf[bufIdx].urb = urb; usbvision->sbuf[bufIdx].data = - usb_buffer_alloc(usbvision->dev, - sb_size, - GFP_KERNEL, - &urb->transfer_dma); + usb_alloc_coherent(usbvision->dev, + sb_size, + GFP_KERNEL, + &urb->transfer_dma); urb->dev = dev; urb->context = usbvision; urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); @@ -2552,10 +2552,10 @@ void usbvision_stop_isoc(struct usb_usbvision *usbvision) for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) { usb_kill_urb(usbvision->sbuf[bufIdx].urb); if (usbvision->sbuf[bufIdx].data){ - usb_buffer_free(usbvision->dev, - sb_size, - usbvision->sbuf[bufIdx].data, - usbvision->sbuf[bufIdx].urb->transfer_dma); + usb_free_coherent(usbvision->dev, + sb_size, + usbvision->sbuf[bufIdx].data, + usbvision->sbuf[bufIdx].urb->transfer_dma); } usb_free_urb(usbvision->sbuf[bufIdx].urb); usbvision->sbuf[bufIdx].urb = NULL; diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 821a9969b7bf..53f3ef4635eb 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -739,7 +739,7 @@ static void uvc_free_urb_buffers(struct uvc_streaming *stream) for (i = 0; i < UVC_URBS; ++i) { if (stream->urb_buffer[i]) { - usb_buffer_free(stream->dev->udev, stream->urb_size, + usb_free_coherent(stream->dev->udev, stream->urb_size, stream->urb_buffer[i], stream->urb_dma[i]); stream->urb_buffer[i] = NULL; } @@ -780,7 +780,7 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream, for (; npackets > 1; npackets /= 2) { for (i = 0; i < UVC_URBS; ++i) { stream->urb_size = psize * npackets; - stream->urb_buffer[i] = usb_buffer_alloc( + stream->urb_buffer[i] = usb_alloc_coherent( stream->dev->udev, stream->urb_size, gfp_flags | __GFP_NOWARN, &stream->urb_dma[i]); if (!stream->urb_buffer[i]) { diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index d800b598ae3d..25a5c7eea948 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -516,8 +516,8 @@ static void ems_usb_write_bulk_callback(struct urb *urb) netdev = dev->netdev; /* free up our allocated buffer */ - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); atomic_dec(&dev->active_tx_urbs); @@ -614,8 +614,8 @@ static int ems_usb_start(struct ems_usb *dev) return -ENOMEM; } - buf = usb_buffer_alloc(dev->udev, RX_BUFFER_SIZE, GFP_KERNEL, - &urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE, GFP_KERNEL, + &urb->transfer_dma); if (!buf) { dev_err(netdev->dev.parent, "No memory left for USB buffer\n"); @@ -635,8 +635,8 @@ static int ems_usb_start(struct ems_usb *dev) netif_device_detach(dev->netdev); usb_unanchor_urb(urb); - usb_buffer_free(dev->udev, RX_BUFFER_SIZE, buf, - urb->transfer_dma); + usb_free_coherent(dev->udev, RX_BUFFER_SIZE, buf, + urb->transfer_dma); break; } @@ -777,7 +777,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne goto nomem; } - buf = usb_buffer_alloc(dev->udev, size, GFP_ATOMIC, &urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, size, GFP_ATOMIC, &urb->transfer_dma); if (!buf) { dev_err(netdev->dev.parent, "No memory left for USB buffer\n"); usb_free_urb(urb); @@ -820,7 +820,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne */ if (!context) { usb_unanchor_urb(urb); - usb_buffer_free(dev->udev, size, buf, urb->transfer_dma); + usb_free_coherent(dev->udev, size, buf, urb->transfer_dma); dev_warn(netdev->dev.parent, "couldn't find free context\n"); @@ -845,7 +845,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne can_free_echo_skb(netdev, context->echo_index); usb_unanchor_urb(urb); - usb_buffer_free(dev->udev, size, buf, urb->transfer_dma); + usb_free_coherent(dev->udev, size, buf, urb->transfer_dma); dev_kfree_skb(skb); atomic_dec(&dev->active_tx_urbs); diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c index 418825d26f90..197c352c47fb 100644 --- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -128,17 +128,13 @@ static int ipheth_alloc_urbs(struct ipheth_device *iphone) if (rx_urb == NULL) goto free_tx_urb; - tx_buf = usb_buffer_alloc(iphone->udev, - IPHETH_BUF_SIZE, - GFP_KERNEL, - &tx_urb->transfer_dma); + tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, + GFP_KERNEL, &tx_urb->transfer_dma); if (tx_buf == NULL) goto free_rx_urb; - rx_buf = usb_buffer_alloc(iphone->udev, - IPHETH_BUF_SIZE, - GFP_KERNEL, - &rx_urb->transfer_dma); + rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, + GFP_KERNEL, &rx_urb->transfer_dma); if (rx_buf == NULL) goto free_tx_buf; @@ -150,8 +146,8 @@ static int ipheth_alloc_urbs(struct ipheth_device *iphone) return 0; free_tx_buf: - usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, tx_buf, - tx_urb->transfer_dma); + usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf, + tx_urb->transfer_dma); free_rx_urb: usb_free_urb(rx_urb); free_tx_urb: @@ -162,10 +158,10 @@ error_nomem: static void ipheth_free_urbs(struct ipheth_device *iphone) { - usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, - iphone->rx_urb->transfer_dma); - usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, - iphone->tx_urb->transfer_dma); + usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, + iphone->rx_urb->transfer_dma); + usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, + iphone->tx_urb->transfer_dma); usb_free_urb(iphone->rx_urb); usb_free_urb(iphone->tx_urb); } diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c index c4c334d9770f..a3eb7be51d53 100644 --- a/drivers/net/usb/kaweth.c +++ b/drivers/net/usb/kaweth.c @@ -1156,13 +1156,13 @@ err_fw: if (!kaweth->irq_urb) goto err_tx_and_rx; - kaweth->intbuffer = usb_buffer_alloc( kaweth->dev, + kaweth->intbuffer = usb_alloc_coherent( kaweth->dev, INTBUFFERSIZE, GFP_KERNEL, &kaweth->intbufferhandle); if (!kaweth->intbuffer) goto err_tx_and_rx_and_irq; - kaweth->rx_buf = usb_buffer_alloc( kaweth->dev, + kaweth->rx_buf = usb_alloc_coherent( kaweth->dev, KAWETH_BUF_SIZE, GFP_KERNEL, &kaweth->rxbufferhandle); @@ -1203,9 +1203,9 @@ err_fw: err_intfdata: usb_set_intfdata(intf, NULL); - usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); + usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); err_all_but_rxbuf: - usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); + usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); err_tx_and_rx_and_irq: usb_free_urb(kaweth->irq_urb); err_tx_and_rx: @@ -1242,8 +1242,8 @@ static void kaweth_disconnect(struct usb_interface *intf) usb_free_urb(kaweth->tx_urb); usb_free_urb(kaweth->irq_urb); - usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); - usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); + usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); + usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); free_netdev(netdev); } diff --git a/drivers/net/wireless/ath/ar9170/usb.c b/drivers/net/wireless/ath/ar9170/usb.c index e1c2fcaa8bed..a1f5444f7ccd 100644 --- a/drivers/net/wireless/ath/ar9170/usb.c +++ b/drivers/net/wireless/ath/ar9170/usb.c @@ -202,7 +202,7 @@ resubmit: return; free: - usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma); } static void ar9170_usb_rx_completed(struct urb *urb) @@ -283,7 +283,7 @@ static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru) if (!urb) goto out; - ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma); + ibuf = usb_alloc_coherent(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma); if (!ibuf) goto out; @@ -296,8 +296,8 @@ static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru) err = usb_submit_urb(urb, GFP_KERNEL); if (err) { usb_unanchor_urb(urb); - usb_buffer_free(aru->udev, 64, urb->transfer_buffer, - urb->transfer_dma); + usb_free_coherent(aru->udev, 64, urb->transfer_buffer, + urb->transfer_dma); } out: diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c index d91ad1a612af..c257940b71b6 100644 --- a/drivers/net/wireless/zd1211rw/zd_usb.c +++ b/drivers/net/wireless/zd1211rw/zd_usb.c @@ -664,15 +664,15 @@ static struct urb *alloc_rx_urb(struct zd_usb *usb) urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return NULL; - buffer = usb_buffer_alloc(udev, USB_MAX_RX_SIZE, GFP_KERNEL, - &urb->transfer_dma); + buffer = usb_alloc_coherent(udev, USB_MAX_RX_SIZE, GFP_KERNEL, + &urb->transfer_dma); if (!buffer) { usb_free_urb(urb); return NULL; } usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN), - buffer, USB_MAX_RX_SIZE, + buffer, USB_MAX_RX_SIZE, rx_urb_complete, usb); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; @@ -683,8 +683,8 @@ static void free_rx_urb(struct urb *urb) { if (!urb) return; - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); } diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 5e1a253b08a0..0c2f14ff9696 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -892,7 +892,7 @@ static void acm_write_buffers_free(struct acm *acm) struct usb_device *usb_dev = interface_to_usbdev(acm->control); for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) - usb_buffer_free(usb_dev, acm->writesize, wb->buf, wb->dmah); + usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); } static void acm_read_buffers_free(struct acm *acm) @@ -901,8 +901,8 @@ static void acm_read_buffers_free(struct acm *acm) int i, n = acm->rx_buflimit; for (i = 0; i < n; i++) - usb_buffer_free(usb_dev, acm->readsize, - acm->rb[i].base, acm->rb[i].dma); + usb_free_coherent(usb_dev, acm->readsize, + acm->rb[i].base, acm->rb[i].dma); } /* Little helper: write buffers allocate */ @@ -912,13 +912,13 @@ static int acm_write_buffers_alloc(struct acm *acm) struct acm_wb *wb; for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { - wb->buf = usb_buffer_alloc(acm->dev, acm->writesize, GFP_KERNEL, + wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, &wb->dmah); if (!wb->buf) { while (i != 0) { --i; --wb; - usb_buffer_free(acm->dev, acm->writesize, + usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah); } return -ENOMEM; @@ -1177,7 +1177,7 @@ made_compressed_probe: tty_port_init(&acm->port); acm->port.ops = &acm_port_ops; - buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); + buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); if (!buf) { dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n"); goto alloc_fail2; @@ -1210,11 +1210,11 @@ made_compressed_probe: for (i = 0; i < num_rx_buf; i++) { struct acm_rb *rb = &(acm->rb[i]); - rb->base = usb_buffer_alloc(acm->dev, readsize, + rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, &rb->dma); if (!rb->base) { dev_dbg(&intf->dev, - "out of memory (read bufs usb_buffer_alloc)\n"); + "out of memory (read bufs usb_alloc_coherent)\n"); goto alloc_fail7; } } @@ -1306,7 +1306,7 @@ alloc_fail7: alloc_fail5: acm_write_buffers_free(acm); alloc_fail4: - usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); + usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); alloc_fail2: kfree(acm); alloc_fail: @@ -1356,8 +1356,8 @@ static void acm_disconnect(struct usb_interface *intf) stop_data_traffic(acm); acm_write_buffers_free(acm); - usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, - acm->ctrl_dma); + usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, + acm->ctrl_dma); acm_read_buffers_free(acm); if (!acm->combined_interfaces) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 189141ca4e05..094c76b5de17 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -276,14 +276,14 @@ static void free_urbs(struct wdm_device *desc) static void cleanup(struct wdm_device *desc) { - usb_buffer_free(interface_to_usbdev(desc->intf), - desc->wMaxPacketSize, - desc->sbuf, - desc->validity->transfer_dma); - usb_buffer_free(interface_to_usbdev(desc->intf), - desc->wMaxCommand, - desc->inbuf, - desc->response->transfer_dma); + usb_free_coherent(interface_to_usbdev(desc->intf), + desc->wMaxPacketSize, + desc->sbuf, + desc->validity->transfer_dma); + usb_free_coherent(interface_to_usbdev(desc->intf), + desc->wMaxCommand, + desc->inbuf, + desc->response->transfer_dma); kfree(desc->orq); kfree(desc->irq); kfree(desc->ubuf); @@ -705,17 +705,17 @@ next_desc: if (!desc->ubuf) goto err; - desc->sbuf = usb_buffer_alloc(interface_to_usbdev(intf), + desc->sbuf = usb_alloc_coherent(interface_to_usbdev(intf), desc->wMaxPacketSize, GFP_KERNEL, &desc->validity->transfer_dma); if (!desc->sbuf) goto err; - desc->inbuf = usb_buffer_alloc(interface_to_usbdev(intf), - desc->bMaxPacketSize0, - GFP_KERNEL, - &desc->response->transfer_dma); + desc->inbuf = usb_alloc_coherent(interface_to_usbdev(intf), + desc->bMaxPacketSize0, + GFP_KERNEL, + &desc->response->transfer_dma); if (!desc->inbuf) goto err2; @@ -742,15 +742,15 @@ out: return rv; err3: usb_set_intfdata(intf, NULL); - usb_buffer_free(interface_to_usbdev(desc->intf), - desc->bMaxPacketSize0, + usb_free_coherent(interface_to_usbdev(desc->intf), + desc->bMaxPacketSize0, desc->inbuf, desc->response->transfer_dma); err2: - usb_buffer_free(interface_to_usbdev(desc->intf), - desc->wMaxPacketSize, - desc->sbuf, - desc->validity->transfer_dma); + usb_free_coherent(interface_to_usbdev(desc->intf), + desc->wMaxPacketSize, + desc->sbuf, + desc->validity->transfer_dma); err: free_urbs(desc); kfree(desc->ubuf); diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index 93b5f85d7ceb..2250095db0a0 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -27,7 +27,7 @@ * v0.11 - add proto_bias option (Pete Zaitcev) * v0.12 - add hpoj.sourceforge.net ioctls (David Paschal) * v0.13 - alloc space for statusbuf ( not on stack); - * use usb_buffer_alloc() for read buf & write buf; + * use usb_alloc_coherent() for read buf & write buf; * none - Maintained in Linux kernel after v0.13 */ diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index 094f91cbc578..1fa6ce3e4a23 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -259,7 +259,7 @@ static int appledisplay_probe(struct usb_interface *iface, } /* Allocate buffer for interrupt data */ - pdata->urbdata = usb_buffer_alloc(pdata->udev, ACD_URB_BUFFER_LEN, + pdata->urbdata = usb_alloc_coherent(pdata->udev, ACD_URB_BUFFER_LEN, GFP_KERNEL, &pdata->urb->transfer_dma); if (!pdata->urbdata) { retval = -ENOMEM; @@ -316,7 +316,7 @@ error: if (pdata->urb) { usb_kill_urb(pdata->urb); if (pdata->urbdata) - usb_buffer_free(pdata->udev, ACD_URB_BUFFER_LEN, + usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN, pdata->urbdata, pdata->urb->transfer_dma); usb_free_urb(pdata->urb); } @@ -337,7 +337,7 @@ static void appledisplay_disconnect(struct usb_interface *iface) usb_kill_urb(pdata->urb); cancel_delayed_work(&pdata->work); backlight_device_unregister(pdata->bd); - usb_buffer_free(pdata->udev, ACD_URB_BUFFER_LEN, + usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN, pdata->urbdata, pdata->urb->transfer_dma); usb_free_urb(pdata->urb); kfree(pdata->msgdata); diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 2300a51d48b7..82e16630a78b 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -734,7 +734,7 @@ static void ftdi_elan_write_bulk_callback(struct urb *urb) dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %" "d\n", urb, status); } - usb_buffer_free(urb->dev, urb->transfer_buffer_length, + usb_free_coherent(urb->dev, urb->transfer_buffer_length, urb->transfer_buffer, urb->transfer_dma); } @@ -795,7 +795,7 @@ static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) total_size); return -ENOMEM; } - buf = usb_buffer_alloc(ftdi->udev, total_size, GFP_KERNEL, + buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c" @@ -829,7 +829,7 @@ static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write " "%d commands totaling %d bytes to the Uxxx\n", retval, urb, command_size, total_size); - usb_buffer_free(ftdi->udev, total_size, buf, urb->transfer_dma); + usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma); usb_free_urb(urb); return retval; } @@ -1167,7 +1167,7 @@ static ssize_t ftdi_elan_write(struct file *file, retval = -ENOMEM; goto error_1; } - buf = usb_buffer_alloc(ftdi->udev, count, GFP_KERNEL, + buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL, &urb->transfer_dma); if (!buf) { retval = -ENOMEM; @@ -1192,7 +1192,7 @@ static ssize_t ftdi_elan_write(struct file *file, exit: return count; error_3: - usb_buffer_free(ftdi->udev, count, buf, urb->transfer_dma); + usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma); error_2: usb_free_urb(urb); error_1: @@ -1968,7 +1968,7 @@ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) "ence\n"); return -ENOMEM; } - buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); + buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq" "uence\n"); @@ -1985,7 +1985,7 @@ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) if (retval) { dev_err(&ftdi->udev->dev, "failed to submit urb containing the " "flush sequence\n"); - usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma); + usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); usb_free_urb(urb); return -ENOMEM; } @@ -2011,7 +2011,7 @@ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) "quence\n"); return -ENOMEM; } - buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); + buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for the reset" " sequence\n"); @@ -2030,7 +2030,7 @@ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) if (retval) { dev_err(&ftdi->udev->dev, "failed to submit urb containing the " "reset sequence\n"); - usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma); + usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); usb_free_urb(urb); return -ENOMEM; } diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index d3c852363883..7dc9d3c69984 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -239,8 +239,8 @@ static void iowarrior_write_callback(struct urb *urb) __func__, status); } /* free up our allocated buffer */ - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); /* tell a waiting writer the interrupt-out-pipe is available again */ atomic_dec(&dev->write_busy); wake_up_interruptible(&dev->write_wait); @@ -421,8 +421,8 @@ static ssize_t iowarrior_write(struct file *file, dbg("%s Unable to allocate urb ", __func__); goto error_no_urb; } - buf = usb_buffer_alloc(dev->udev, dev->report_size, - GFP_KERNEL, &int_out_urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, dev->report_size, + GFP_KERNEL, &int_out_urb->transfer_dma); if (!buf) { retval = -ENOMEM; dbg("%s Unable to allocate buffer ", __func__); @@ -459,8 +459,8 @@ static ssize_t iowarrior_write(struct file *file, break; } error: - usb_buffer_free(dev->udev, dev->report_size, buf, - int_out_urb->transfer_dma); + usb_free_coherent(dev->udev, dev->report_size, buf, + int_out_urb->transfer_dma); error_no_buffer: usb_free_urb(int_out_urb); error_no_urb: diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index 90aede90553e..7828c764b323 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -205,8 +205,8 @@ static void lcd_write_bulk_callback(struct urb *urb) } /* free up our allocated buffer */ - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); up(&dev->limit_sem); } @@ -234,7 +234,7 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz goto err_no_buf; } - buf = usb_buffer_alloc(dev->udev, count, GFP_KERNEL, &urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL, &urb->transfer_dma); if (!buf) { retval = -ENOMEM; goto error; @@ -268,7 +268,7 @@ exit: error_unanchor: usb_unanchor_urb(urb); error: - usb_buffer_free(dev->udev, count, buf, urb->transfer_dma); + usb_free_coherent(dev->udev, count, buf, urb->transfer_dma); usb_free_urb(urb); err_no_buf: up(&dev->limit_sem); diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 9dcc82337ced..16dffe99d9f1 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -202,7 +202,7 @@ static struct urb *simple_alloc_urb ( urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; if (usb_pipein (pipe)) urb->transfer_flags |= URB_SHORT_NOT_OK; - urb->transfer_buffer = usb_buffer_alloc (udev, bytes, GFP_KERNEL, + urb->transfer_buffer = usb_alloc_coherent (udev, bytes, GFP_KERNEL, &urb->transfer_dma); if (!urb->transfer_buffer) { usb_free_urb (urb); @@ -272,8 +272,8 @@ static inline int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb) static void simple_free_urb (struct urb *urb) { - usb_buffer_free (urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); usb_free_urb (urb); } @@ -1416,7 +1416,7 @@ static struct urb *iso_alloc_urb ( urb->number_of_packets = packets; urb->transfer_buffer_length = bytes; - urb->transfer_buffer = usb_buffer_alloc (udev, bytes, GFP_KERNEL, + urb->transfer_buffer = usb_alloc_coherent (udev, bytes, GFP_KERNEL, &urb->transfer_dma); if (!urb->transfer_buffer) { usb_free_urb (urb); diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c index 198bb3ed95b2..1943be5a2914 100644 --- a/drivers/usb/storage/onetouch.c +++ b/drivers/usb/storage/onetouch.c @@ -201,8 +201,8 @@ static int onetouch_connect_input(struct us_data *ss) if (!onetouch || !input_dev) goto fail1; - onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN, - GFP_KERNEL, &onetouch->data_dma); + onetouch->data = usb_alloc_coherent(udev, ONETOUCH_PKT_LEN, + GFP_KERNEL, &onetouch->data_dma); if (!onetouch->data) goto fail1; @@ -264,8 +264,8 @@ static int onetouch_connect_input(struct us_data *ss) return 0; fail3: usb_free_urb(onetouch->irq); - fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN, - onetouch->data, onetouch->data_dma); + fail2: usb_free_coherent(udev, ONETOUCH_PKT_LEN, + onetouch->data, onetouch->data_dma); fail1: kfree(onetouch); input_free_device(input_dev); return error; @@ -279,8 +279,8 @@ static void onetouch_release_input(void *onetouch_) usb_kill_urb(onetouch->irq); input_unregister_device(onetouch->dev); usb_free_urb(onetouch->irq); - usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN, - onetouch->data, onetouch->data_dma); + usb_free_coherent(onetouch->udev, ONETOUCH_PKT_LEN, + onetouch->data, onetouch->data_dma); } } diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index c54a370c76c5..e2798ef2dd19 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -414,7 +414,7 @@ static int associate_dev(struct us_data *us, struct usb_interface *intf) return -ENOMEM; } - us->iobuf = usb_buffer_alloc(us->pusb_dev, US_IOBUF_SIZE, + us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, GFP_KERNEL, &us->iobuf_dma); if (!us->iobuf) { US_DEBUGP("I/O buffer allocation failed\n"); @@ -758,7 +758,7 @@ static void dissociate_dev(struct us_data *us) /* Free the buffers */ kfree(us->cr); - usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); + usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); /* Remove our private data from the interface */ usb_set_intfdata(us->pusb_intf, NULL); diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 61522787f39c..d110588b56f1 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -387,8 +387,8 @@ static void skel_write_bulk_callback(struct urb *urb) } /* free up our allocated buffer */ - usb_buffer_free(urb->dev, urb->transfer_buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, urb->transfer_buffer_length, + urb->transfer_buffer, urb->transfer_dma); up(&dev->limit_sem); } @@ -442,8 +442,8 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, goto error; } - buf = usb_buffer_alloc(dev->udev, writesize, GFP_KERNEL, - &urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, writesize, GFP_KERNEL, + &urb->transfer_dma); if (!buf) { retval = -ENOMEM; goto error; @@ -491,7 +491,7 @@ error_unanchor: usb_unanchor_urb(urb); error: if (urb) { - usb_buffer_free(dev->udev, writesize, buf, urb->transfer_dma); + usb_free_coherent(dev->udev, writesize, buf, urb->transfer_dma); usb_free_urb(urb); } up(&dev->limit_sem); diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c index 8e4eacc5bb52..748a74bd85e7 100644 --- a/drivers/watchdog/pcwd_usb.c +++ b/drivers/watchdog/pcwd_usb.c @@ -600,8 +600,8 @@ static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd) { usb_free_urb(usb_pcwd->intr_urb); if (usb_pcwd->intr_buffer != NULL) - usb_buffer_free(usb_pcwd->udev, usb_pcwd->intr_size, - usb_pcwd->intr_buffer, usb_pcwd->intr_dma); + usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size, + usb_pcwd->intr_buffer, usb_pcwd->intr_dma); kfree(usb_pcwd); } @@ -671,7 +671,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, le16_to_cpu(endpoint->wMaxPacketSize) : 8); /* set up the memory buffer's */ - usb_pcwd->intr_buffer = usb_buffer_alloc(udev, usb_pcwd->intr_size, + usb_pcwd->intr_buffer = usb_alloc_coherent(udev, usb_pcwd->intr_size, GFP_ATOMIC, &usb_pcwd->intr_dma); if (!usb_pcwd->intr_buffer) { printk(KERN_ERR PFX "Out of memory\n"); diff --git a/sound/usb/ua101.c b/sound/usb/ua101.c index 3d458d3b9962..d700e32dee24 100644 --- a/sound/usb/ua101.c +++ b/sound/usb/ua101.c @@ -41,7 +41,7 @@ MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}"); /* * This magic value optimizes memory usage efficiency for the UA-101's packet * sizes at all sample rates, taking into account the stupid cache pool sizes - * that usb_buffer_alloc() uses. + * that usb_alloc_coherent() uses. */ #define DEFAULT_QUEUE_LENGTH 21 @@ -1056,7 +1056,7 @@ static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream) (unsigned int)MAX_QUEUE_LENGTH); /* - * The cache pool sizes used by usb_buffer_alloc() (128, 512, 2048) are + * The cache pool sizes used by usb_alloc_coherent() (128, 512, 2048) are * quite bad when used with the packet sizes of this device (e.g. 280, * 520, 624). Therefore, we allocate and subdivide entire pages, using * a smaller buffer only for the last chunk. @@ -1067,8 +1067,8 @@ static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream) packets = min(remaining_packets, packets_per_page); size = packets * stream->max_packet_bytes; stream->buffers[i].addr = - usb_buffer_alloc(ua->dev, size, GFP_KERNEL, - &stream->buffers[i].dma); + usb_alloc_coherent(ua->dev, size, GFP_KERNEL, + &stream->buffers[i].dma); if (!stream->buffers[i].addr) return -ENOMEM; stream->buffers[i].size = size; @@ -1088,10 +1088,10 @@ static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream) unsigned int i; for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) - usb_buffer_free(ua->dev, - stream->buffers[i].size, - stream->buffers[i].addr, - stream->buffers[i].dma); + usb_free_coherent(ua->dev, + stream->buffers[i].size, + stream->buffers[i].addr, + stream->buffers[i].dma); } static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream, diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 11b0826b8fe6..9d2274ce01d5 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -985,9 +985,9 @@ static void release_urb_ctx(struct snd_urb_ctx *u) { if (u->urb) { if (u->buffer_size) - usb_buffer_free(u->subs->dev, u->buffer_size, - u->urb->transfer_buffer, - u->urb->transfer_dma); + usb_free_coherent(u->subs->dev, u->buffer_size, + u->urb->transfer_buffer, + u->urb->transfer_dma); usb_free_urb(u->urb); u->urb = NULL; } @@ -1008,8 +1008,8 @@ static void release_substream_urbs(struct snd_usb_substream *subs, int force) release_urb_ctx(&subs->dataurb[i]); for (i = 0; i < SYNC_URBS; i++) release_urb_ctx(&subs->syncurb[i]); - usb_buffer_free(subs->dev, SYNC_URBS * 4, - subs->syncbuf, subs->sync_dma); + usb_free_coherent(subs->dev, SYNC_URBS * 4, + subs->syncbuf, subs->sync_dma); subs->syncbuf = NULL; subs->nurbs = 0; } @@ -1113,8 +1113,8 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri if (!u->urb) goto out_of_memory; u->urb->transfer_buffer = - usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, - &u->urb->transfer_dma); + usb_alloc_coherent(subs->dev, u->buffer_size, GFP_KERNEL, + &u->urb->transfer_dma); if (!u->urb->transfer_buffer) goto out_of_memory; u->urb->pipe = subs->datapipe; @@ -1126,8 +1126,8 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri if (subs->syncpipe) { /* allocate and initialize sync urbs */ - subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, - GFP_KERNEL, &subs->sync_dma); + subs->syncbuf = usb_alloc_coherent(subs->dev, SYNC_URBS * 4, + GFP_KERNEL, &subs->sync_dma); if (!subs->syncbuf) goto out_of_memory; for (i = 0; i < SYNC_URBS; i++) { diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index 9e28b20cb2ce..61b2d8fd0331 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -1047,8 +1047,8 @@ static struct snd_rawmidi_ops snd_usbmidi_input_ops = { static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb, unsigned int buffer_length) { - usb_buffer_free(umidi->dev, buffer_length, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(umidi->dev, buffer_length, + urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); } @@ -1099,8 +1099,8 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep); length = usb_maxpacket(umidi->dev, pipe, 0); for (i = 0; i < INPUT_URBS; ++i) { - buffer = usb_buffer_alloc(umidi->dev, length, GFP_KERNEL, - &ep->urbs[i]->transfer_dma); + buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL, + &ep->urbs[i]->transfer_dma); if (!buffer) { snd_usbmidi_in_endpoint_delete(ep); return -ENOMEM; @@ -1190,9 +1190,9 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, break; } for (i = 0; i < OUTPUT_URBS; ++i) { - buffer = usb_buffer_alloc(umidi->dev, - ep->max_transfer, GFP_KERNEL, - &ep->urbs[i].urb->transfer_dma); + buffer = usb_alloc_coherent(umidi->dev, + ep->max_transfer, GFP_KERNEL, + &ep->urbs[i].urb->transfer_dma); if (!buffer) { snd_usbmidi_out_endpoint_delete(ep); return -ENOMEM; -- cgit v1.2.3-58-ga151 From c220cc3e37f1596260870f99f751102f667384a5 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 29 Apr 2010 15:36:29 -0700 Subject: USB: staging: fix up usb_buffer_alloc calls in the staging tree This renames the functions usb_buffer_alloc and usb_buffer_free to the correct ones for the drivers in the staging tree. Cc: Daniel Mack Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rt2860/iface/rtmp_usb.h | 4 ++-- drivers/staging/udlfb/udlfb.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/staging/rt2860/iface/rtmp_usb.h b/drivers/staging/rt2860/iface/rtmp_usb.h index 6bb384a74660..33479cc443a5 100644 --- a/drivers/staging/rt2860/iface/rtmp_usb.h +++ b/drivers/staging/rt2860/iface/rtmp_usb.h @@ -81,8 +81,8 @@ extern u8 EpToQueue[6]; #define RT28XX_PUT_DEVICE usb_put_dev #define RTUSB_ALLOC_URB(iso) usb_alloc_urb(iso, GFP_ATOMIC) #define RTUSB_SUBMIT_URB(pUrb) usb_submit_urb(pUrb, GFP_ATOMIC) -#define RTUSB_URB_ALLOC_BUFFER(pUsb_Dev, BufSize, pDma_addr) usb_buffer_alloc(pUsb_Dev, BufSize, GFP_ATOMIC, pDma_addr) -#define RTUSB_URB_FREE_BUFFER(pUsb_Dev, BufSize, pTransferBuf, Dma_addr) usb_buffer_free(pUsb_Dev, BufSize, pTransferBuf, Dma_addr) +#define RTUSB_URB_ALLOC_BUFFER(pUsb_Dev, BufSize, pDma_addr) usb_alloc_coherent(pUsb_Dev, BufSize, GFP_ATOMIC, pDma_addr) +#define RTUSB_URB_FREE_BUFFER(pUsb_Dev, BufSize, pTransferBuf, Dma_addr) usb_free_coherent(pUsb_Dev, BufSize, pTransferBuf, Dma_addr) #define RTUSB_FREE_URB(pUrb) usb_free_urb(pUrb) diff --git a/drivers/staging/udlfb/udlfb.c b/drivers/staging/udlfb/udlfb.c index a78ade0dc687..aa8195199a2c 100644 --- a/drivers/staging/udlfb/udlfb.c +++ b/drivers/staging/udlfb/udlfb.c @@ -1508,8 +1508,8 @@ static void dlfb_free_urb_list(struct dlfb_data *dev) urb = unode->urb; /* Free each separately allocated piece */ - usb_buffer_free(urb->dev, dev->urbs.size, - urb->transfer_buffer, urb->transfer_dma); + usb_free_coherent(urb->dev, dev->urbs.size, + urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); kfree(node); } @@ -1543,8 +1543,8 @@ static int dlfb_alloc_urb_list(struct dlfb_data *dev, int count, size_t size) } unode->urb = urb; - buf = usb_buffer_alloc(dev->udev, MAX_TRANSFER, GFP_KERNEL, - &urb->transfer_dma); + buf = usb_alloc_coherent(dev->udev, MAX_TRANSFER, GFP_KERNEL, + &urb->transfer_dma); if (!buf) { kfree(unode); usb_free_urb(urb); -- cgit v1.2.3-58-ga151 From b69578df7e98659b7d94c905971a6d1025b431ad Mon Sep 17 00:00:00 2001 From: Mike Dunn Date: Thu, 15 Apr 2010 17:01:33 -0400 Subject: USB: usbserial: mos7720: add support for parallel port on moschip 7715 Add support for the parallel port on the moschip MCS7715 device. The port registers itself with the parport subsystem as a low-level driver. A separate entry to the kernel configuration is added beneath that for the mos7720, to avoid the need to link with the parport subsystem code for users who don't have or don't want the parallel port. Only compatibility mode is currently supported (no ECP/EPP). Tested with both moschip devices (7720 and 7715) on UP and SMP hosts, including regression testing of serial port, concurrent operation of serial and parallel ports, and various connect / disconnect scenarios. Signed-off-by: Mike Dunn Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/usb-serial.txt | 16 + drivers/usb/serial/Kconfig | 11 + drivers/usb/serial/mos7720.c | 806 ++++++++++++++++++++++++++++++++++----- 3 files changed, 747 insertions(+), 86 deletions(-) (limited to 'drivers') diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt index 540c91ccf86f..f4d214510259 100644 --- a/Documentation/usb/usb-serial.txt +++ b/Documentation/usb/usb-serial.txt @@ -440,6 +440,22 @@ Winchiphead CH341 Driver For any questions or problems with this driver, please contact frank@kingswood-consulting.co.uk. +Moschip MCS7720, MCS7715 driver + + These chips are present in devices sold by various manufacturers, such as Syba + and Cables Unlimited. There may be others. The 7720 provides two serial + ports, and the 7715 provides one serial and one standard PC parallel port. + Support for the 7715's parallel port is enabled by a separate option, which + will not appear unless parallel port support is first enabled at the top-level + of the Device Drivers config menu. Currently only compatibility mode is + supported on the parallel port (no ECP/EPP). + + TODO: + - Implement ECP/EPP modes for the parallel port. + - Baud rates higher than 115200 are currently broken. + - Devices with a single serial port based on the Moschip MCS7703 may work + with this driver with a simple addition to the usb_device_id table. I + don't have one of these devices, so I can't say for sure. Generic Serial driver diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index efb6dc7aa450..a0b2247eeaa1 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -425,6 +425,17 @@ config USB_SERIAL_MOS7720 To compile this driver as a module, choose M here: the module will be called mos7720. +if USB_SERIAL_MOS7720 +config USB_SERIAL_MOS7715_PARPORT + bool "Support for parallel port on the Moschip 7715" + select PARPORT_NOT_PC + depends on PARPORT + ---help--- + Say Y if you have a Moschip 7715 device and would like to use + the parallel port it provides. The port will register with + the parport subsystem as a low-level driver. +endif + config USB_SERIAL_MOS7840 tristate "USB Moschip 7840/7820 USB Serial Driver" ---help--- diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 0d47f2c4d59f..2d35d11d04e3 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -34,12 +34,12 @@ #include #include #include - +#include /* * Version Information */ -#define DRIVER_VERSION "1.0.0.4F" +#define DRIVER_VERSION "2.0" #define DRIVER_AUTHOR "Aspire Communications pvt Ltd." #define DRIVER_DESC "Moschip USB Serial Driver" @@ -63,7 +63,7 @@ #define NUM_URBS 16 /* URB Count */ #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ -/* This structure holds all of the local port information */ +/* This structure holds all of the local serial port information */ struct moschip_port { __u8 shadowLCR; /* last LCR value received */ __u8 shadowMCR; /* last MCR value received */ @@ -74,11 +74,6 @@ struct moschip_port { struct urb *write_urb_pool[NUM_URBS]; }; -/* This structure holds all of the individual serial device information */ -struct moschip_serial { - int interrupt_started; -}; - static int debug; static struct usb_serial_driver moschip7720_2port_driver; @@ -94,6 +89,649 @@ static const struct usb_device_id moschip_port_id_table[] = { }; MODULE_DEVICE_TABLE(usb, moschip_port_id_table); +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT + +/* initial values for parport regs */ +#define DCR_INIT_VAL 0x0c /* SLCTIN, nINIT */ +#define ECR_INIT_VAL 0x00 /* SPP mode */ + +struct urbtracker { + struct mos7715_parport *mos_parport; + struct list_head urblist_entry; + struct kref ref_count; + struct urb *urb; +}; + +enum mos7715_pp_modes { + SPP = 0<<5, + PS2 = 1<<5, /* moschip calls this 'NIBBLE' mode */ + PPF = 2<<5, /* moschip calls this 'CB-FIFO mode */ +}; + +struct mos7715_parport { + struct parport *pp; /* back to containing struct */ + struct kref ref_count; /* to instance of this struct */ + struct list_head deferred_urbs; /* list deferred async urbs */ + struct list_head active_urbs; /* list async urbs in flight */ + spinlock_t listlock; /* protects list access */ + bool msg_pending; /* usb sync call pending */ + struct completion syncmsg_compl; /* usb sync call completed */ + struct tasklet_struct urb_tasklet; /* for sending deferred urbs */ + struct usb_serial *serial; /* back to containing struct */ + __u8 shadowECR; /* parallel port regs... */ + __u8 shadowDCR; + atomic_t shadowDSR; /* updated in int-in callback */ +}; + +/* lock guards against dereferencing NULL ptr in parport ops callbacks */ +static DEFINE_SPINLOCK(release_lock); + +enum mos_regs { + THR, /* serial port regs */ + RHR, + IER, + FCR, + ISR, + LCR, + MCR, + LSR, + MSR, + SPR, + DLL, + DLM, + DPR, /* parallel port regs */ + DSR, + DCR, + ECR, + SP1_REG, /* device control regs */ + SP2_REG, /* serial port 2 (7720 only) */ + PP_REG, + SP_CONTROL_REG, +}; + +/* + * Return the correct value for the Windex field of the setup packet + * for a control endpoint message. See the 7715 datasheet. + */ +static inline __u16 get_reg_index(enum mos_regs reg) +{ + static const __u16 mos7715_index_lookup_table[] = { + 0x00, /* THR */ + 0x00, /* RHR */ + 0x01, /* IER */ + 0x02, /* FCR */ + 0x02, /* ISR */ + 0x03, /* LCR */ + 0x04, /* MCR */ + 0x05, /* LSR */ + 0x06, /* MSR */ + 0x07, /* SPR */ + 0x00, /* DLL */ + 0x01, /* DLM */ + 0x00, /* DPR */ + 0x01, /* DSR */ + 0x02, /* DCR */ + 0x0a, /* ECR */ + 0x01, /* SP1_REG */ + 0x02, /* SP2_REG (7720 only) */ + 0x04, /* PP_REG (7715 only) */ + 0x08, /* SP_CONTROL_REG */ + }; + return mos7715_index_lookup_table[reg]; +} + +/* + * Return the correct value for the upper byte of the Wvalue field of + * the setup packet for a control endpoint message. + */ +static inline __u16 get_reg_value(enum mos_regs reg) +{ + if (reg >= SP1_REG) /* control reg */ + return 0x0000; + else /* parallel port reg (7715 only) */ + return 0x0100; +} + +/* + * Write data byte to the specified device register. The data is embedded in + * the value field of the setup packet. + */ +static int write_parport_reg(struct mos7715_parport *mos_parport, + enum mos_regs reg, __u8 data) +{ + struct usb_serial *serial = mos_parport->serial; + struct usb_device *usbdev = serial->dev; + unsigned int pipe = usb_sndctrlpipe(usbdev, 0); + __u8 request = (__u8)0x0e; + __u8 requesttype = (__u8)0x40; + __u16 value = get_reg_value(reg) + data; + __u16 index = get_reg_index(reg); + __u16 size = 0; + int status; + status = usb_control_msg(usbdev, pipe, request, requesttype, value, + index, NULL, size, MOS_WDR_TIMEOUT); + if (status < 0) + dev_err(&usbdev->dev, + "mos7720: usb_control_msg() failed: %d", status); + return status; +} + +/* + * Read data byte from the specified device register. The data returned by the + * device is embedded in the value field of the setup packet. + */ +static int read_parport_reg(struct mos7715_parport *mos_parport, + enum mos_regs reg, __u8 *data) +{ + struct usb_device *usbdev = mos_parport->serial->dev; + unsigned int pipe = usb_rcvctrlpipe(usbdev, 0); + __u8 request = (__u8)0x0d; + __u8 requesttype = (__u8)0xc0; + __u16 value = get_reg_value(reg); + __u16 index = get_reg_index(reg); + __u16 size = 1; + int status = usb_control_msg(usbdev, pipe, request, requesttype, value, + index, data, size, MOS_WDR_TIMEOUT); + if (status < 0) + dev_err(&usbdev->dev, + "mos7720: usb_control_msg() failed: %d", status); + return status; +} + +static inline int mos7715_change_mode(struct mos7715_parport *mos_parport, + enum mos7715_pp_modes mode) +{ + mos_parport->shadowECR = mode; + write_parport_reg(mos_parport, ECR, mos_parport->shadowECR); + return 0; +} + +static void destroy_mos_parport(struct kref *kref) +{ + struct mos7715_parport *mos_parport = + container_of(kref, struct mos7715_parport, ref_count); + + dbg("%s called", __func__); + kfree(mos_parport); +} + +static void destroy_urbtracker(struct kref *kref) +{ + struct urbtracker *urbtrack = + container_of(kref, struct urbtracker, ref_count); + struct mos7715_parport *mos_parport = urbtrack->mos_parport; + dbg("%s called", __func__); + usb_free_urb(urbtrack->urb); + kfree(urbtrack); + kref_put(&mos_parport->ref_count, destroy_mos_parport); +} + +/* + * This runs as a tasklet when sending an urb in a non-blocking parallel + * port callback had to be deferred because the disconnect mutex could not be + * obtained at the time. + */ +static void send_deferred_urbs(unsigned long _mos_parport) +{ + int ret_val; + unsigned long flags; + struct mos7715_parport *mos_parport = (void *)_mos_parport; + struct urbtracker *urbtrack; + struct list_head *cursor, *next; + + dbg("%s called", __func__); + + /* if release function ran, game over */ + if (unlikely(mos_parport->serial == NULL)) + return; + + /* try again to get the mutex */ + if (!mutex_trylock(&mos_parport->serial->disc_mutex)) { + dbg("%s: rescheduling tasklet", __func__); + tasklet_schedule(&mos_parport->urb_tasklet); + return; + } + + /* if device disconnected, game over */ + if (unlikely(mos_parport->serial->disconnected)) { + mutex_unlock(&mos_parport->serial->disc_mutex); + return; + } + + spin_lock_irqsave(&mos_parport->listlock, flags); + if (list_empty(&mos_parport->deferred_urbs)) { + spin_unlock_irqrestore(&mos_parport->listlock, flags); + mutex_unlock(&mos_parport->serial->disc_mutex); + dbg("%s: deferred_urbs list empty", __func__); + return; + } + + /* move contents of deferred_urbs list to active_urbs list and submit */ + list_for_each_safe(cursor, next, &mos_parport->deferred_urbs) + list_move_tail(cursor, &mos_parport->active_urbs); + list_for_each_entry(urbtrack, &mos_parport->active_urbs, + urblist_entry) { + ret_val = usb_submit_urb(urbtrack->urb, GFP_ATOMIC); + dbg("%s: urb submitted", __func__); + if (ret_val) { + dev_err(&mos_parport->serial->dev->dev, + "usb_submit_urb() failed: %d", ret_val); + list_del(&urbtrack->urblist_entry); + kref_put(&urbtrack->ref_count, destroy_urbtracker); + } + } + spin_unlock_irqrestore(&mos_parport->listlock, flags); + mutex_unlock(&mos_parport->serial->disc_mutex); +} + +/* callback for parallel port control urbs submitted asynchronously */ +static void async_complete(struct urb *urb) +{ + struct urbtracker *urbtrack = urb->context; + int status = urb->status; + dbg("%s called", __func__); + if (unlikely(status)) + dbg("%s - nonzero urb status received: %d", __func__, status); + + /* remove the urbtracker from the active_urbs list */ + spin_lock(&urbtrack->mos_parport->listlock); + list_del(&urbtrack->urblist_entry); + spin_unlock(&urbtrack->mos_parport->listlock); + kref_put(&urbtrack->ref_count, destroy_urbtracker); +} + +static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, + enum mos_regs reg, __u8 data) +{ + struct urbtracker *urbtrack; + int ret_val; + unsigned long flags; + struct usb_ctrlrequest setup; + struct usb_serial *serial = mos_parport->serial; + struct usb_device *usbdev = serial->dev; + dbg("%s called", __func__); + + /* create and initialize the control urb and containing urbtracker */ + urbtrack = kmalloc(sizeof(struct urbtracker), GFP_ATOMIC); + if (urbtrack == NULL) { + dev_err(&usbdev->dev, "out of memory"); + return -ENOMEM; + } + kref_get(&mos_parport->ref_count); + urbtrack->mos_parport = mos_parport; + urbtrack->urb = usb_alloc_urb(0, GFP_ATOMIC); + if (urbtrack->urb == NULL) { + dev_err(&usbdev->dev, "out of urbs"); + kfree(urbtrack); + return -ENOMEM; + } + setup.bRequestType = (__u8)0x40; + setup.bRequest = (__u8)0x0e; + setup.wValue = get_reg_value(reg); + setup.wIndex = get_reg_index(reg); + setup.wLength = 0; + usb_fill_control_urb(urbtrack->urb, usbdev, + usb_sndctrlpipe(usbdev, 0), + (unsigned char *)&setup, + NULL, 0, async_complete, urbtrack); + kref_init(&urbtrack->ref_count); + INIT_LIST_HEAD(&urbtrack->urblist_entry); + + /* + * get the disconnect mutex, or add tracker to the deferred_urbs list + * and schedule a tasklet to try again later + */ + if (!mutex_trylock(&serial->disc_mutex)) { + spin_lock_irqsave(&mos_parport->listlock, flags); + list_add_tail(&urbtrack->urblist_entry, + &mos_parport->deferred_urbs); + spin_unlock_irqrestore(&mos_parport->listlock, flags); + tasklet_schedule(&mos_parport->urb_tasklet); + dbg("tasklet scheduled"); + return 0; + } + + /* bail if device disconnected */ + if (serial->disconnected) { + kref_put(&urbtrack->ref_count, destroy_urbtracker); + mutex_unlock(&serial->disc_mutex); + return -ENODEV; + } + + /* add the tracker to the active_urbs list and submit */ + spin_lock_irqsave(&mos_parport->listlock, flags); + list_add_tail(&urbtrack->urblist_entry, &mos_parport->active_urbs); + spin_unlock_irqrestore(&mos_parport->listlock, flags); + ret_val = usb_submit_urb(urbtrack->urb, GFP_ATOMIC); + mutex_unlock(&serial->disc_mutex); + if (ret_val) { + dev_err(&usbdev->dev, + "%s: submit_urb() failed: %d", __func__, ret_val); + spin_lock_irqsave(&mos_parport->listlock, flags); + list_del(&urbtrack->urblist_entry); + spin_unlock_irqrestore(&mos_parport->listlock, flags); + kref_put(&urbtrack->ref_count, destroy_urbtracker); + return ret_val; + } + return 0; +} + +/* + * This is the the common top part of all parallel port callback operations that + * send synchronous messages to the device. This implements convoluted locking + * that avoids two scenarios: (1) a port operation is called after usbserial + * has called our release function, at which point struct mos7715_parport has + * been destroyed, and (2) the device has been disconnected, but usbserial has + * not called the release function yet because someone has a serial port open. + * The shared release_lock prevents the first, and the mutex and disconnected + * flag maintained by usbserial covers the second. We also use the msg_pending + * flag to ensure that all synchronous usb messgage calls have completed before + * our release function can return. + */ +static int parport_prologue(struct parport *pp) +{ + struct mos7715_parport *mos_parport; + + spin_lock(&release_lock); + mos_parport = pp->private_data; + if (unlikely(mos_parport == NULL)) { + /* release fn called, port struct destroyed */ + spin_unlock(&release_lock); + return -1; + } + mos_parport->msg_pending = true; /* synch usb call pending */ + INIT_COMPLETION(mos_parport->syncmsg_compl); + spin_unlock(&release_lock); + + mutex_lock(&mos_parport->serial->disc_mutex); + if (mos_parport->serial->disconnected) { + /* device disconnected */ + mutex_unlock(&mos_parport->serial->disc_mutex); + mos_parport->msg_pending = false; + complete(&mos_parport->syncmsg_compl); + return -1; + } + + return 0; +} + +/* + * This is the the common bottom part of all parallel port functions that send + * synchronous messages to the device. + */ +static inline void parport_epilogue(struct parport *pp) +{ + struct mos7715_parport *mos_parport = pp->private_data; + mutex_unlock(&mos_parport->serial->disc_mutex); + mos_parport->msg_pending = false; + complete(&mos_parport->syncmsg_compl); +} + +static void parport_mos7715_write_data(struct parport *pp, unsigned char d) +{ + struct mos7715_parport *mos_parport = pp->private_data; + dbg("%s called: %2.2x", __func__, d); + if (parport_prologue(pp) < 0) + return; + mos7715_change_mode(mos_parport, SPP); + write_parport_reg(mos_parport, DPR, (__u8)d); + parport_epilogue(pp); +} + +static unsigned char parport_mos7715_read_data(struct parport *pp) +{ + struct mos7715_parport *mos_parport = pp->private_data; + unsigned char d; + dbg("%s called", __func__); + if (parport_prologue(pp) < 0) + return 0; + read_parport_reg(mos_parport, DPR, &d); + parport_epilogue(pp); + return d; +} + +static void parport_mos7715_write_control(struct parport *pp, unsigned char d) +{ + struct mos7715_parport *mos_parport = pp->private_data; + __u8 data; + dbg("%s called: %2.2x", __func__, d); + if (parport_prologue(pp) < 0) + return; + data = ((__u8)d & 0x0f) | (mos_parport->shadowDCR & 0xf0); + write_parport_reg(mos_parport, DCR, data); + mos_parport->shadowDCR = data; + parport_epilogue(pp); +} + +static unsigned char parport_mos7715_read_control(struct parport *pp) +{ + struct mos7715_parport *mos_parport = pp->private_data; + __u8 dcr; + dbg("%s called", __func__); + spin_lock(&release_lock); + mos_parport = pp->private_data; + if (unlikely(mos_parport == NULL)) { + spin_unlock(&release_lock); + return 0; + } + dcr = mos_parport->shadowDCR & 0x0f; + spin_unlock(&release_lock); + return dcr; +} + +static unsigned char parport_mos7715_frob_control(struct parport *pp, + unsigned char mask, + unsigned char val) +{ + struct mos7715_parport *mos_parport = pp->private_data; + __u8 dcr; + dbg("%s called", __func__); + mask &= 0x0f; + val &= 0x0f; + if (parport_prologue(pp) < 0) + return 0; + mos_parport->shadowDCR = (mos_parport->shadowDCR & (~mask)) ^ val; + write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + dcr = mos_parport->shadowDCR & 0x0f; + parport_epilogue(pp); + return dcr; +} + +static unsigned char parport_mos7715_read_status(struct parport *pp) +{ + unsigned char status; + struct mos7715_parport *mos_parport = pp->private_data; + dbg("%s called", __func__); + spin_lock(&release_lock); + mos_parport = pp->private_data; + if (unlikely(mos_parport == NULL)) { /* release called */ + spin_unlock(&release_lock); + return 0; + } + status = atomic_read(&mos_parport->shadowDSR) & 0xf8; + spin_unlock(&release_lock); + return status; +} + +static void parport_mos7715_enable_irq(struct parport *pp) +{ + dbg("%s called", __func__); +} +static void parport_mos7715_disable_irq(struct parport *pp) +{ + dbg("%s called", __func__); +} + +static void parport_mos7715_data_forward(struct parport *pp) +{ + struct mos7715_parport *mos_parport = pp->private_data; + dbg("%s called", __func__); + if (parport_prologue(pp) < 0) + return; + mos7715_change_mode(mos_parport, PS2); + mos_parport->shadowDCR &= ~0x20; + write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + parport_epilogue(pp); +} + +static void parport_mos7715_data_reverse(struct parport *pp) +{ + struct mos7715_parport *mos_parport = pp->private_data; + dbg("%s called", __func__); + if (parport_prologue(pp) < 0) + return; + mos7715_change_mode(mos_parport, PS2); + mos_parport->shadowDCR |= 0x20; + write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + parport_epilogue(pp); +} + +static void parport_mos7715_init_state(struct pardevice *dev, + struct parport_state *s) +{ + dbg("%s called", __func__); + s->u.pc.ctr = DCR_INIT_VAL; + s->u.pc.ecr = ECR_INIT_VAL; +} + +/* N.B. Parport core code requires that this function not block */ +static void parport_mos7715_save_state(struct parport *pp, + struct parport_state *s) +{ + struct mos7715_parport *mos_parport; + dbg("%s called", __func__); + spin_lock(&release_lock); + mos_parport = pp->private_data; + if (unlikely(mos_parport == NULL)) { /* release called */ + spin_unlock(&release_lock); + return; + } + s->u.pc.ctr = mos_parport->shadowDCR; + s->u.pc.ecr = mos_parport->shadowECR; + spin_unlock(&release_lock); +} + +/* N.B. Parport core code requires that this function not block */ +static void parport_mos7715_restore_state(struct parport *pp, + struct parport_state *s) +{ + struct mos7715_parport *mos_parport; + dbg("%s called", __func__); + spin_lock(&release_lock); + mos_parport = pp->private_data; + if (unlikely(mos_parport == NULL)) { /* release called */ + spin_unlock(&release_lock); + return; + } + write_parport_reg_nonblock(mos_parport, DCR, mos_parport->shadowDCR); + write_parport_reg_nonblock(mos_parport, ECR, mos_parport->shadowECR); + spin_unlock(&release_lock); +} + +static size_t parport_mos7715_write_compat(struct parport *pp, + const void *buffer, + size_t len, int flags) +{ + int retval; + struct mos7715_parport *mos_parport = pp->private_data; + int actual_len; + dbg("%s called: %u chars", __func__, (unsigned int)len); + if (parport_prologue(pp) < 0) + return 0; + mos7715_change_mode(mos_parport, PPF); + retval = usb_bulk_msg(mos_parport->serial->dev, + usb_sndbulkpipe(mos_parport->serial->dev, 2), + (void *)buffer, len, &actual_len, + MOS_WDR_TIMEOUT); + parport_epilogue(pp); + if (retval) { + dev_err(&mos_parport->serial->dev->dev, + "mos7720: usb_bulk_msg() failed: %d", retval); + return 0; + } + return actual_len; +} + +static struct parport_operations parport_mos7715_ops = { + .owner = THIS_MODULE, + .write_data = parport_mos7715_write_data, + .read_data = parport_mos7715_read_data, + + .write_control = parport_mos7715_write_control, + .read_control = parport_mos7715_read_control, + .frob_control = parport_mos7715_frob_control, + + .read_status = parport_mos7715_read_status, + + .enable_irq = parport_mos7715_enable_irq, + .disable_irq = parport_mos7715_disable_irq, + + .data_forward = parport_mos7715_data_forward, + .data_reverse = parport_mos7715_data_reverse, + + .init_state = parport_mos7715_init_state, + .save_state = parport_mos7715_save_state, + .restore_state = parport_mos7715_restore_state, + + .compat_write_data = parport_mos7715_write_compat, + + .nibble_read_data = parport_ieee1284_read_nibble, + .byte_read_data = parport_ieee1284_read_byte, +}; + +/* + * Allocate and initialize parallel port control struct, initialize + * the parallel port hardware device, and register with the parport subsystem. + */ +static int mos7715_parport_init(struct usb_serial *serial) +{ + struct mos7715_parport *mos_parport; + + /* allocate and initialize parallel port control struct */ + mos_parport = kzalloc(sizeof(struct mos7715_parport), GFP_KERNEL); + if (mos_parport == NULL) { + dbg("mos7715_parport_init: kzalloc failed"); + return -ENOMEM; + } + mos_parport->msg_pending = false; + kref_init(&mos_parport->ref_count); + spin_lock_init(&mos_parport->listlock); + INIT_LIST_HEAD(&mos_parport->active_urbs); + INIT_LIST_HEAD(&mos_parport->deferred_urbs); + usb_set_serial_data(serial, mos_parport); /* hijack private pointer */ + mos_parport->serial = serial; + tasklet_init(&mos_parport->urb_tasklet, send_deferred_urbs, + (unsigned long) mos_parport); + init_completion(&mos_parport->syncmsg_compl); + + /* cycle parallel port reset bit */ + write_parport_reg(mos_parport, PP_REG, (__u8)0x80); + write_parport_reg(mos_parport, PP_REG, (__u8)0x00); + + /* initialize device registers */ + mos_parport->shadowDCR = DCR_INIT_VAL; + write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + mos_parport->shadowECR = ECR_INIT_VAL; + write_parport_reg(mos_parport, ECR, mos_parport->shadowECR); + + /* register with parport core */ + mos_parport->pp = parport_register_port(0, PARPORT_IRQ_NONE, + PARPORT_DMA_NONE, + &parport_mos7715_ops); + if (mos_parport->pp == NULL) { + dev_err(&serial->interface->dev, + "Could not register parport\n"); + kref_put(&mos_parport->ref_count, destroy_mos_parport); + return -EIO; + } + mos_parport->pp->private_data = mos_parport; + mos_parport->pp->modes = PARPORT_MODE_COMPAT | PARPORT_MODE_PCSPP; + mos_parport->pp->dev = &serial->interface->dev; + parport_announce_port(mos_parport->pp); + + return 0; +} +#endif /* CONFIG_USB_SERIAL_MOS7715_PARPORT */ /* * mos7720_interrupt_callback @@ -109,8 +747,6 @@ static void mos7720_interrupt_callback(struct urb *urb) __u8 sp1; __u8 sp2; - dbg(" : Entering"); - switch (status) { case 0: /* success */ @@ -118,6 +754,7 @@ static void mos7720_interrupt_callback(struct urb *urb) case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: + case -ENODEV: /* this urb is terminated, clean up */ dbg("%s - urb shutting down with status: %d", __func__, status); @@ -161,7 +798,7 @@ static void mos7720_interrupt_callback(struct urb *urb) dbg("Serial Port 1: Receiver time out"); break; case SERIAL_IIR_MS: - dbg("Serial Port 1: Modem status change"); + /* dbg("Serial Port 1: Modem status change"); */ break; } @@ -174,7 +811,7 @@ static void mos7720_interrupt_callback(struct urb *urb) dbg("Serial Port 2: Receiver time out"); break; case SERIAL_IIR_MS: - dbg("Serial Port 2: Modem status change"); + /* dbg("Serial Port 2: Modem status change"); */ break; } } @@ -208,6 +845,7 @@ static void mos7715_interrupt_callback(struct urb *urb) case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: + case -ENODEV: /* this urb is terminated, clean up */ dbg("%s - urb shutting down with status: %d", __func__, status); @@ -243,11 +881,21 @@ static void mos7715_interrupt_callback(struct urb *urb) dbg("Serial Port: Receiver time out"); break; case SERIAL_IIR_MS: - dbg("Serial Port: Modem status change"); + /* dbg("Serial Port: Modem status change"); */ break; } } +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT + { /* update local copy of DSR reg */ + struct usb_serial_port *port = urb->context; + struct mos7715_parport *mos_parport = port->serial->private; + if (unlikely(mos_parport == NULL)) + return; + atomic_set(&mos_parport->shadowDSR, data[2]); + } +#endif + exit: result = usb_submit_urb(urb, GFP_ATOMIC); if (result) @@ -267,7 +915,6 @@ static void mos7720_bulk_in_callback(struct urb *urb) int retval; unsigned char *data ; struct usb_serial_port *port; - struct moschip_port *mos7720_port; struct tty_struct *tty; int status = urb->status; @@ -276,13 +923,7 @@ static void mos7720_bulk_in_callback(struct urb *urb) return; } - mos7720_port = urb->context; - if (!mos7720_port) { - dbg("NULL mos7720_port pointer"); - return ; - } - - port = mos7720_port->port; + port = urb->context; dbg("Entering...%s", __func__); @@ -332,8 +973,6 @@ static void mos7720_bulk_out_data_callback(struct urb *urb) return ; } - dbg("Entering ........."); - tty = tty_port_tty_get(&mos7720_port->port->port); if (tty && mos7720_port->open) @@ -424,7 +1063,6 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) struct usb_serial *serial; struct usb_serial_port *port0; struct urb *urb; - struct moschip_serial *mos7720_serial; struct moschip_port *mos7720_port; int response; int port_number; @@ -440,11 +1078,6 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) port0 = serial->port[0]; - mos7720_serial = usb_get_serial_data(serial); - - if (mos7720_serial == NULL || port0 == NULL) - return -ENODEV; - usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); @@ -549,43 +1182,6 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) data = 0x0c; send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - /* see if we've set up our endpoint info yet * - * (can't set it up in mos7720_startup as the * - * structures were not set up at that time.) */ - if (!mos7720_serial->interrupt_started) { - dbg("Interrupt buffer NULL !!!"); - - /* not set up yet, so do it now */ - mos7720_serial->interrupt_started = 1; - - dbg("To Submit URB !!!"); - - /* set up our interrupt urb */ - usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, - usb_rcvintpipe(serial->dev, - port->interrupt_in_endpointAddress), - port0->interrupt_in_buffer, - port0->interrupt_in_urb->transfer_buffer_length, - mos7720_interrupt_callback, mos7720_port, - port0->interrupt_in_urb->interval); - - /* start interrupt read for this mos7720 this interrupt * - * will continue as long as the mos7720 is connected */ - dbg("Submit URB over !!!"); - response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); - if (response) - dev_err(&port->dev, - "%s - Error %d submitting control urb\n", - __func__, response); - } - - /* set up our bulk in urb */ - usb_fill_bulk_urb(port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->bulk_in_buffer, - port->read_urb->transfer_buffer_length, - mos7720_bulk_in_callback, mos7720_port); response = usb_submit_urb(port->read_urb, GFP_KERNEL); if (response) dev_err(&port->dev, "%s - Error %d submitting read urb\n", @@ -897,6 +1493,7 @@ static void mos7720_unthrottle(struct tty_struct *tty) } } +/* FIXME: this function does not work */ static int set_higher_rates(struct moschip_port *mos7720_port, unsigned int baud) { @@ -939,6 +1536,7 @@ static int set_higher_rates(struct moschip_port *mos7720_port, * Set for higher rates * ***********************************************/ + /* writing baud rate verbatum into uart clock field clearly not right */ data = baud * 0x10; send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); @@ -1308,7 +1906,7 @@ static void mos7720_set_termios(struct tty_struct *tty, return; } - dbg("setting termios - ASPIRE"); + dbg("%s\n", "setting termios - ASPIRE"); cflag = tty->termios->c_cflag; @@ -1326,7 +1924,7 @@ static void mos7720_set_termios(struct tty_struct *tty, change_port_settings(tty, mos7720_port, old_termios); if (!port->read_urb) { - dbg("URB KILLED !!!!!"); + dbg("%s", "URB KILLED !!!!!"); return; } @@ -1590,12 +2188,12 @@ static int mos7720_ioctl(struct tty_struct *tty, struct file *file, static int mos7720_startup(struct usb_serial *serial) { - struct moschip_serial *mos7720_serial; struct moschip_port *mos7720_port; struct usb_device *dev; int i; char data; u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); + int ret_val; dbg("%s: Entering ..........", __func__); @@ -1606,15 +2204,6 @@ static int mos7720_startup(struct usb_serial *serial) dev = serial->dev; - /* create our private serial structure */ - mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); - if (mos7720_serial == NULL) { - dev_err(&dev->dev, "%s - Out of memory\n", __func__); - return -ENOMEM; - } - - usb_set_serial_data(serial, mos7720_serial); - /* * The 7715 uses the first bulk in/out endpoint pair for the parallel * port, and the second for the serial port. Because the usbserial core @@ -1638,16 +2227,12 @@ static int mos7720_startup(struct usb_serial *serial) serial->port[1]->interrupt_in_buffer = NULL; } - /* we set up the pointers to the endpoints in the mos7720_open * - * function, as the structures aren't created yet. */ - /* set up port private structures */ + /* set up serial port private structures */ for (i = 0; i < serial->num_ports; ++i) { mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); if (mos7720_port == NULL) { dev_err(&dev->dev, "%s - Out of memory\n", __func__); - usb_set_serial_data(serial, NULL); - kfree(mos7720_serial); return -ENOMEM; } @@ -1669,6 +2254,20 @@ static int mos7720_startup(struct usb_serial *serial) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); + /* start the interrupt urb */ + ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); + if (ret_val) + dev_err(&dev->dev, + "%s - Error %d submitting control urb\n", + __func__, ret_val); + +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT + if (product == MOSCHIP_DEVICE_ID_7715) { + ret_val = mos7715_parport_init(serial); + if (ret_val < 0) + return ret_val; + } +#endif /* LSR For Port 1 */ send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); dbg("LSR:%x", data); @@ -1684,12 +2283,47 @@ static void mos7720_release(struct usb_serial *serial) { int i; +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT + /* close the parallel port */ + + if (le16_to_cpu(serial->dev->descriptor.idProduct) + == MOSCHIP_DEVICE_ID_7715) { + struct urbtracker *urbtrack; + unsigned long flags; + struct mos7715_parport *mos_parport = + usb_get_serial_data(serial); + + /* prevent NULL ptr dereference in port callbacks */ + spin_lock(&release_lock); + mos_parport->pp->private_data = NULL; + spin_unlock(&release_lock); + + /* wait for synchronous usb calls to return */ + if (mos_parport->msg_pending) + wait_for_completion_timeout(&mos_parport->syncmsg_compl, + MOS_WDR_TIMEOUT); + + parport_remove_port(mos_parport->pp); + usb_set_serial_data(serial, NULL); + mos_parport->serial = NULL; + + /* if tasklet currently scheduled, wait for it to complete */ + tasklet_kill(&mos_parport->urb_tasklet); + + /* unlink any urbs sent by the tasklet */ + spin_lock_irqsave(&mos_parport->listlock, flags); + list_for_each_entry(urbtrack, + &mos_parport->active_urbs, + urblist_entry) + usb_unlink_urb(urbtrack->urb); + spin_unlock_irqrestore(&mos_parport->listlock, flags); + + kref_put(&mos_parport->ref_count, destroy_mos_parport); + } +#endif /* free private structure allocated for serial port */ for (i = 0; i < serial->num_ports; ++i) kfree(usb_get_serial_port_data(serial->port[i])); - - /* free private structure allocated for serial device */ - kfree(usb_get_serial_data(serial)); } static struct usb_driver usb_driver = { -- cgit v1.2.3-58-ga151 From 63b917678fe6d63e633462b5be5a309511bcf3ca Mon Sep 17 00:00:00 2001 From: Mike Dunn Date: Thu, 15 Apr 2010 17:02:09 -0400 Subject: USB: usbserial: mos7720: cleanup, consolidation, replace send_mos_cmd with {read,write}_mos_reg No functionality added or bugs fixed, just improved code consistency and (hopefully) readability by replacing send_mos_cmd with the register read & write functions that were used for parallel port registers. Also shortens overall file length. Thoroughly tested, with emphasis on regression testing the serial port. Signed-off-by: Mike Dunn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7720.c | 388 ++++++++++++++----------------------------- 1 file changed, 122 insertions(+), 266 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 2d35d11d04e3..30922a7e3347 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -39,16 +39,13 @@ /* * Version Information */ -#define DRIVER_VERSION "2.0" +#define DRIVER_VERSION "2.1" #define DRIVER_AUTHOR "Aspire Communications pvt Ltd." #define DRIVER_DESC "Moschip USB Serial Driver" /* default urb timeout */ #define MOS_WDR_TIMEOUT (HZ * 5) -#define MOS_PORT1 0x0200 -#define MOS_PORT2 0x0300 -#define MOS_VENREG 0x0000 #define MOS_MAX_PORT 0x02 #define MOS_WRITE 0x0E #define MOS_READ 0x0D @@ -126,6 +123,10 @@ struct mos7715_parport { /* lock guards against dereferencing NULL ptr in parport ops callbacks */ static DEFINE_SPINLOCK(release_lock); +#endif /* CONFIG_USB_SERIAL_MOS7715_PARPORT */ + +static const unsigned int dummy; /* for clarity in register access fns */ + enum mos_regs { THR, /* serial port regs */ RHR, @@ -184,32 +185,35 @@ static inline __u16 get_reg_index(enum mos_regs reg) * Return the correct value for the upper byte of the Wvalue field of * the setup packet for a control endpoint message. */ -static inline __u16 get_reg_value(enum mos_regs reg) +static inline __u16 get_reg_value(enum mos_regs reg, + unsigned int serial_portnum) { if (reg >= SP1_REG) /* control reg */ return 0x0000; - else /* parallel port reg (7715 only) */ + + else if (reg >= DPR) /* parallel port reg (7715 only) */ return 0x0100; + + else /* serial port reg */ + return (serial_portnum + 2) << 8; } /* * Write data byte to the specified device register. The data is embedded in - * the value field of the setup packet. + * the value field of the setup packet. serial_portnum is ignored for registers + * not specific to a particular serial port. */ -static int write_parport_reg(struct mos7715_parport *mos_parport, - enum mos_regs reg, __u8 data) +static int write_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, + enum mos_regs reg, __u8 data) { - struct usb_serial *serial = mos_parport->serial; struct usb_device *usbdev = serial->dev; unsigned int pipe = usb_sndctrlpipe(usbdev, 0); __u8 request = (__u8)0x0e; __u8 requesttype = (__u8)0x40; - __u16 value = get_reg_value(reg) + data; __u16 index = get_reg_index(reg); - __u16 size = 0; - int status; - status = usb_control_msg(usbdev, pipe, request, requesttype, value, - index, NULL, size, MOS_WDR_TIMEOUT); + __u16 value = get_reg_value(reg, serial_portnum) + data; + int status = usb_control_msg(usbdev, pipe, request, requesttype, value, + index, NULL, 0, MOS_WDR_TIMEOUT); if (status < 0) dev_err(&usbdev->dev, "mos7720: usb_control_msg() failed: %d", status); @@ -218,31 +222,33 @@ static int write_parport_reg(struct mos7715_parport *mos_parport, /* * Read data byte from the specified device register. The data returned by the - * device is embedded in the value field of the setup packet. + * device is embedded in the value field of the setup packet. serial_portnum is + * ignored for registers that are not specific to a particular serial port. */ -static int read_parport_reg(struct mos7715_parport *mos_parport, - enum mos_regs reg, __u8 *data) +static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum, + enum mos_regs reg, __u8 *data) { - struct usb_device *usbdev = mos_parport->serial->dev; + struct usb_device *usbdev = serial->dev; unsigned int pipe = usb_rcvctrlpipe(usbdev, 0); __u8 request = (__u8)0x0d; __u8 requesttype = (__u8)0xc0; - __u16 value = get_reg_value(reg); __u16 index = get_reg_index(reg); - __u16 size = 1; + __u16 value = get_reg_value(reg, serial_portnum); int status = usb_control_msg(usbdev, pipe, request, requesttype, value, - index, data, size, MOS_WDR_TIMEOUT); + index, data, 1, MOS_WDR_TIMEOUT); if (status < 0) dev_err(&usbdev->dev, "mos7720: usb_control_msg() failed: %d", status); return status; } +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT + static inline int mos7715_change_mode(struct mos7715_parport *mos_parport, enum mos7715_pp_modes mode) { mos_parport->shadowECR = mode; - write_parport_reg(mos_parport, ECR, mos_parport->shadowECR); + write_mos_reg(mos_parport->serial, dummy, ECR, mos_parport->shadowECR); return 0; } @@ -367,7 +373,7 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, } setup.bRequestType = (__u8)0x40; setup.bRequest = (__u8)0x0e; - setup.wValue = get_reg_value(reg); + setup.wValue = get_reg_value(reg, dummy); setup.wIndex = get_reg_index(reg); setup.wLength = 0; usb_fill_control_urb(urbtrack->urb, usbdev, @@ -474,7 +480,7 @@ static void parport_mos7715_write_data(struct parport *pp, unsigned char d) if (parport_prologue(pp) < 0) return; mos7715_change_mode(mos_parport, SPP); - write_parport_reg(mos_parport, DPR, (__u8)d); + write_mos_reg(mos_parport->serial, dummy, DPR, (__u8)d); parport_epilogue(pp); } @@ -485,7 +491,7 @@ static unsigned char parport_mos7715_read_data(struct parport *pp) dbg("%s called", __func__); if (parport_prologue(pp) < 0) return 0; - read_parport_reg(mos_parport, DPR, &d); + read_mos_reg(mos_parport->serial, dummy, DPR, &d); parport_epilogue(pp); return d; } @@ -498,7 +504,7 @@ static void parport_mos7715_write_control(struct parport *pp, unsigned char d) if (parport_prologue(pp) < 0) return; data = ((__u8)d & 0x0f) | (mos_parport->shadowDCR & 0xf0); - write_parport_reg(mos_parport, DCR, data); + write_mos_reg(mos_parport->serial, dummy, DCR, data); mos_parport->shadowDCR = data; parport_epilogue(pp); } @@ -531,7 +537,7 @@ static unsigned char parport_mos7715_frob_control(struct parport *pp, if (parport_prologue(pp) < 0) return 0; mos_parport->shadowDCR = (mos_parport->shadowDCR & (~mask)) ^ val; - write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR); dcr = mos_parport->shadowDCR & 0x0f; parport_epilogue(pp); return dcr; @@ -570,7 +576,7 @@ static void parport_mos7715_data_forward(struct parport *pp) return; mos7715_change_mode(mos_parport, PS2); mos_parport->shadowDCR &= ~0x20; - write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR); parport_epilogue(pp); } @@ -582,7 +588,7 @@ static void parport_mos7715_data_reverse(struct parport *pp) return; mos7715_change_mode(mos_parport, PS2); mos_parport->shadowDCR |= 0x20; - write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR); parport_epilogue(pp); } @@ -705,14 +711,14 @@ static int mos7715_parport_init(struct usb_serial *serial) init_completion(&mos_parport->syncmsg_compl); /* cycle parallel port reset bit */ - write_parport_reg(mos_parport, PP_REG, (__u8)0x80); - write_parport_reg(mos_parport, PP_REG, (__u8)0x00); + write_mos_reg(mos_parport->serial, dummy, PP_REG, (__u8)0x80); + write_mos_reg(mos_parport->serial, dummy, PP_REG, (__u8)0x00); /* initialize device registers */ mos_parport->shadowDCR = DCR_INIT_VAL; - write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR); + write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR); mos_parport->shadowECR = ECR_INIT_VAL; - write_parport_reg(mos_parport, ECR, mos_parport->shadowECR); + write_mos_reg(mos_parport->serial, dummy, ECR, mos_parport->shadowECR); /* register with parport core */ mos_parport->pp = parport_register_port(0, PARPORT_IRQ_NONE, @@ -754,7 +760,6 @@ static void mos7720_interrupt_callback(struct urb *urb) case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: - case -ENODEV: /* this urb is terminated, clean up */ dbg("%s - urb shutting down with status: %d", __func__, status); @@ -980,56 +985,6 @@ static void mos7720_bulk_out_data_callback(struct urb *urb) tty_kref_put(tty); } -/* - * send_mos_cmd - * this function will be used for sending command to device - */ -static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, - __u16 index, u8 *data) -{ - int status; - u8 *buf; - u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); - - if (value < MOS_MAX_PORT) { - if (product == MOSCHIP_DEVICE_ID_7715) - value = 0x0200; /* identifies the 7715's serial port */ - else - value = value*0x100+0x200; - } else { - value = 0x0000; - if ((product == MOSCHIP_DEVICE_ID_7715) && - (index != 0x08)) { - dbg("serial->product== MOSCHIP_DEVICE_ID_7715"); - /* index = 0x01 ; */ - } - } - - if (request == MOS_WRITE) { - value = value + *data; - status = usb_control_msg(serial->dev, - usb_sndctrlpipe(serial->dev, 0), MOS_WRITE, - 0x40, value, index, NULL, 0, MOS_WDR_TIMEOUT); - } else { - buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - status = -ENOMEM; - goto out; - } - status = usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), MOS_READ, - 0xc0, value, index, buf, 1, MOS_WDR_TIMEOUT); - *data = *buf; - kfree(buf); - } -out: - if (status < 0) - dbg("Command Write failed Value %x index %x", value, index); - - return status; -} - - /* * mos77xx_probe * this function installs the appropriate read interrupt endpoint callback @@ -1066,7 +1021,7 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) struct moschip_port *mos7720_port; int response; int port_number; - char data; + __u8 data; int allocated_urbs = 0; int j; @@ -1122,65 +1077,35 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) * 0x08 : SP1/2 Control Reg */ port_number = port->number - port->serial->minor; - send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data); + read_mos_reg(serial, port_number, LSR, &data); + dbg("SS::%p LSR:%x", mos7720_port, data); dbg("Check:Sending Command .........."); - data = 0x02; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data); - data = 0x02; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data); + write_mos_reg(serial, dummy, SP1_REG, 0x02); + write_mos_reg(serial, dummy, SP2_REG, 0x02); - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); + write_mos_reg(serial, port_number, IER, 0x00); + write_mos_reg(serial, port_number, FCR, 0x00); - data = 0xCF; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); - data = 0x03; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); - data = 0x0b; - mos7720_port->shadowMCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - data = 0x0b; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - - data = 0x00; - send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); - -/* data = 0x00; - send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data); - data = 0x03; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); - data = 0x00; - send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT, - port_number + 1, &data); -*/ - data = 0x00; - send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); + write_mos_reg(serial, port_number, FCR, 0xcf); + mos7720_port->shadowLCR = 0x03; + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); + mos7720_port->shadowMCR = 0x0b; + write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR); + write_mos_reg(serial, port_number, SP_CONTROL_REG, 0x00); + read_mos_reg(serial, dummy, SP_CONTROL_REG, &data); data = data | (port->number - port->serial->minor + 1); - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); - - data = 0x83; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); - data = 0x0c; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - data = 0x03; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); - data = 0x0c; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - data = 0x0c; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); + write_mos_reg(serial, dummy, SP_CONTROL_REG, data); + mos7720_port->shadowLCR = 0x83; + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); + write_mos_reg(serial, port_number, THR, 0x0c); + write_mos_reg(serial, port_number, IER, 0x00); + mos7720_port->shadowLCR = 0x03; + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); + write_mos_reg(serial, port_number, IER, 0x0c); response = usb_submit_urb(port->read_urb, GFP_KERNEL); if (response) @@ -1236,7 +1161,6 @@ static void mos7720_close(struct usb_serial_port *port) { struct usb_serial *serial; struct moschip_port *mos7720_port; - char data; int j; dbg("mos7720_close:entering..."); @@ -1269,13 +1193,10 @@ static void mos7720_close(struct usb_serial_port *port) /* these commands must not be issued if the device has * been disconnected */ if (!serial->disconnected) { - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, - port->number - port->serial->minor, 0x04, &data); - - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, - port->number - port->serial->minor, 0x01, &data); + write_mos_reg(serial, port->number - port->serial->minor, + MCR, 0x00); + write_mos_reg(serial, port->number - port->serial->minor, + IER, 0x00); } mutex_unlock(&serial->disc_mutex); mos7720_port->open = 0; @@ -1304,8 +1225,8 @@ static void mos7720_break(struct tty_struct *tty, int break_state) data = mos7720_port->shadowLCR & ~UART_LCR_SBC; mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, - 0x03, &data); + write_mos_reg(serial, port->number - port->serial->minor, + LCR, mos7720_port->shadowLCR); return; } @@ -1450,9 +1371,8 @@ static void mos7720_throttle(struct tty_struct *tty) /* if we are implementing RTS/CTS, toggle that line */ if (tty->termios->c_cflag & CRTSCTS) { mos7720_port->shadowMCR &= ~UART_MCR_RTS; - status = send_mos_cmd(port->serial, MOS_WRITE, - port->number - port->serial->minor, - UART_MCR, &mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->number - port->serial->minor, + MCR, mos7720_port->shadowMCR); if (status != 0) return; } @@ -1485,9 +1405,8 @@ static void mos7720_unthrottle(struct tty_struct *tty) /* if we are implementing RTS/CTS, toggle that line */ if (tty->termios->c_cflag & CRTSCTS) { mos7720_port->shadowMCR |= UART_MCR_RTS; - status = send_mos_cmd(port->serial, MOS_WRITE, - port->number - port->serial->minor, - UART_MCR, &mos7720_port->shadowMCR); + write_mos_reg(port->serial, port->number - port->serial->minor, + MCR, mos7720_port->shadowMCR); if (status != 0) return; } @@ -1497,11 +1416,10 @@ static void mos7720_unthrottle(struct tty_struct *tty) static int set_higher_rates(struct moschip_port *mos7720_port, unsigned int baud) { - unsigned char data; struct usb_serial_port *port; struct usb_serial *serial; int port_number; - + enum mos_regs sp_reg; if (mos7720_port == NULL) return -EINVAL; @@ -1514,59 +1432,35 @@ static int set_higher_rates(struct moschip_port *mos7720_port, dbg("Sending Setting Commands .........."); port_number = port->number - port->serial->minor; - data = 0x000; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - data = 0x000; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); - data = 0x0CF; - send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); - data = 0x00b; - mos7720_port->shadowMCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - data = 0x00b; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - - data = 0x000; - send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); - data = 0x000; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); - + write_mos_reg(serial, port_number, IER, 0x00); + write_mos_reg(serial, port_number, FCR, 0x00); + write_mos_reg(serial, port_number, FCR, 0xcf); + mos7720_port->shadowMCR = 0x0b; + write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR); + write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x00); /*********************************************** * Set for higher rates * ***********************************************/ - /* writing baud rate verbatum into uart clock field clearly not right */ - data = baud * 0x10; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); - - data = 0x003; - send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); - data = 0x003; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); - - data = 0x02b; - mos7720_port->shadowMCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - data = 0x02b; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); + if (port_number == 0) + sp_reg = SP1_REG; + else + sp_reg = SP2_REG; + write_mos_reg(serial, dummy, sp_reg, baud * 0x10); + write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x03); + mos7720_port->shadowMCR = 0x2b; + write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR); /*********************************************** * Set DLL/DLM ***********************************************/ - - data = mos7720_port->shadowLCR | UART_LCR_DLAB; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); - - data = 0x001; /* DLL */ - send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); - data = 0x000; /* DLM */ - send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); - - data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); + mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB; + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); + write_mos_reg(serial, port_number, DLL, 0x01); + write_mos_reg(serial, port_number, DLM, 0x00); + mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB; + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); return 0; } @@ -1654,7 +1548,6 @@ static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, struct usb_serial *serial; int divisor; int status; - unsigned char data; unsigned char number; if (mos7720_port == NULL) @@ -1676,21 +1569,16 @@ static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, } /* Enable access to divisor latch */ - data = mos7720_port->shadowLCR | UART_LCR_DLAB; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); + mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB; + write_mos_reg(serial, number, LCR, mos7720_port->shadowLCR); /* Write the divisor */ - data = ((unsigned char)(divisor & 0xff)); - send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); - - data = ((unsigned char)((divisor & 0xff00) >> 8)); - send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); + write_mos_reg(serial, number, DLL, (__u8)(divisor & 0xff)); + write_mos_reg(serial, number, DLM, (__u8)((divisor & 0xff00) >> 8)); /* Disable access to divisor latch */ - data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; - mos7720_port->shadowLCR = data; - send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); + mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB; + write_mos_reg(serial, number, LCR, mos7720_port->shadowLCR); return status; } @@ -1715,7 +1603,6 @@ static void change_port_settings(struct tty_struct *tty, __u8 lStop; int status; int port_number; - char data; if (mos7720_port == NULL) return ; @@ -1794,30 +1681,19 @@ static void change_port_settings(struct tty_struct *tty, /* Update the LCR with the correct value */ mos7720_port->shadowLCR &= - ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); + ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); mos7720_port->shadowLCR |= (lData | lParity | lStop); /* Disable Interrupts */ - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, - UART_IER, &data); - - data = 0x00; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); - - data = 0xcf; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); + write_mos_reg(serial, port_number, IER, 0x00); + write_mos_reg(serial, port_number, FCR, 0x00); + write_mos_reg(serial, port_number, FCR, 0xcf); /* Send the updated LCR value to the mos7720 */ - data = mos7720_port->shadowLCR; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); - - data = 0x00b; - mos7720_port->shadowMCR = data; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); - data = 0x00b; - send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); + write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR); + mos7720_port->shadowMCR = 0x0b; + write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR); /* set up the MCR register and send it to the mos7720 */ mos7720_port->shadowMCR = UART_MCR_OUT2; @@ -1828,21 +1704,15 @@ static void change_port_settings(struct tty_struct *tty, mos7720_port->shadowMCR |= (UART_MCR_XONANY); /* To set hardware flow control to the specified * * serial port, in SP1/2_CONTROL_REG */ - if (port->number) { - data = 0x001; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, - 0x08, &data); - } else { - data = 0x002; - send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, - 0x08, &data); - } - } else { + if (port->number) + write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x01); + else + write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x02); + + } else mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); - } - data = mos7720_port->shadowMCR; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); + write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR); /* Determine divisor based on baud rate */ baud = tty_get_baud_rate(tty); @@ -1855,8 +1725,7 @@ static void change_port_settings(struct tty_struct *tty, if (baud >= 230400) { set_higher_rates(mos7720_port, baud); /* Enable Interrupts */ - data = 0x0c; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); + write_mos_reg(serial, port_number, IER, 0x0c); return; } @@ -1867,8 +1736,7 @@ static void change_port_settings(struct tty_struct *tty, if (cflag & CBAUD) tty_encode_baud_rate(tty, baud, baud); /* Enable Interrupts */ - data = 0x0c; - send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); + write_mos_reg(serial, port_number, IER, 0x0c); if (port->read_urb->status != -EINPROGRESS) { port->read_urb->dev = serial->dev; @@ -1959,8 +1827,7 @@ static int get_lsr_info(struct tty_struct *tty, count = mos7720_chars_in_buffer(tty); if (count == 0) { - send_mos_cmd(port->serial, MOS_READ, port_number, - UART_LSR, &data); + read_mos_reg(port->serial, port_number, LSR, &data); if ((data & (UART_LSR_TEMT | UART_LSR_THRE)) == (UART_LSR_TEMT | UART_LSR_THRE)) { dbg("%s -- Empty", __func__); @@ -1998,13 +1865,11 @@ static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) } static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) + unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7720_port = usb_get_serial_port_data(port); unsigned int mcr ; - unsigned char lmcr; - dbg("%s - port %d", __func__, port->number); dbg("he was at tiocmget"); @@ -2025,10 +1890,8 @@ static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, mcr &= ~UART_MCR_LOOP; mos7720_port->shadowMCR = mcr; - lmcr = mos7720_port->shadowMCR; - - send_mos_cmd(port->serial, MOS_WRITE, - port->number - port->serial->minor, UART_MCR, &lmcr); + write_mos_reg(port->serial, port->number - port->serial->minor, + MCR, mos7720_port->shadowMCR); return 0; } @@ -2038,7 +1901,6 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, { unsigned int mcr ; unsigned int arg; - unsigned char data; struct usb_serial_port *port; @@ -2073,10 +1935,8 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, } mos7720_port->shadowMCR = mcr; - - data = mos7720_port->shadowMCR; - send_mos_cmd(port->serial, MOS_WRITE, - port->number - port->serial->minor, UART_MCR, &data); + write_mos_reg(port->serial, port->number - port->serial->minor, + MCR, mos7720_port->shadowMCR); return 0; } @@ -2269,11 +2129,7 @@ static int mos7720_startup(struct usb_serial *serial) } #endif /* LSR For Port 1 */ - send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); - dbg("LSR:%x", data); - - /* LSR For Port 2 */ - send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); + read_mos_reg(serial, 0, LSR, &data); dbg("LSR:%x", data); return 0; -- cgit v1.2.3-58-ga151 From 9ff68c7ad8910426495be36e2b568ac623adc226 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 3 May 2010 10:07:25 -0700 Subject: USB: usbserial: fix mos7720 dependencies Fix mos7720 Kconfig dependencies. When an enabled bool selects a tristate, the tristate becomes =y, even if it should be limited to modular, so limit the bool kconfig option to configs that will build cleanly. Also change the if-block to a simple depends on. drivers/built-in.o: In function `mos7720_release': mos7720.c:(.text+0xad432): undefined reference to `parport_remove_port' drivers/built-in.o: In function `mos7715_parport_init': mos7720.c:(.text+0xae197): undefined reference to `parport_register_port' mos7720.c:(.text+0xae210): undefined reference to `parport_announce_port' drivers/built-in.o:(.data+0x201c8): undefined reference to `parport_ieee1284_read_nibble' drivers/built-in.o:(.data+0x201d0): undefined reference to `parport_ieee1284_read_byte' Signed-off-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index a0b2247eeaa1..bd8aab0ef1cf 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -425,16 +425,15 @@ config USB_SERIAL_MOS7720 To compile this driver as a module, choose M here: the module will be called mos7720. -if USB_SERIAL_MOS7720 config USB_SERIAL_MOS7715_PARPORT bool "Support for parallel port on the Moschip 7715" + depends on USB_SERIAL_MOS7720 + depends on PARPORT=y || PARPORT=USB_SERIAL_MOS7720 select PARPORT_NOT_PC - depends on PARPORT ---help--- Say Y if you have a Moschip 7715 device and would like to use the parallel port it provides. The port will register with the parport subsystem as a low-level driver. -endif config USB_SERIAL_MOS7840 tristate "USB Moschip 7840/7820 USB Serial Driver" -- cgit v1.2.3-58-ga151 From e8f4af304e3d16e7e512865bd53f3db811d9bbc8 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Sat, 17 Apr 2010 17:12:58 +0200 Subject: USB: core: config.c: usb_get_configuration() simplified usb_gat_configuratio() used two pointers to point to the same memory. Code simplified, by removing one of them. Signed-off-by: Michal Nazarewicz Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 16c1157be3fc..e4909c26becb 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -735,7 +735,6 @@ int usb_get_configuration(struct usb_device *dev) int ncfg = dev->descriptor.bNumConfigurations; int result = 0; unsigned int cfgno, length; - unsigned char *buffer; unsigned char *bigbuffer; struct usb_config_descriptor *desc; @@ -764,17 +763,16 @@ int usb_get_configuration(struct usb_device *dev) if (!dev->rawdescriptors) goto err2; - buffer = kmalloc(USB_DT_CONFIG_SIZE, GFP_KERNEL); - if (!buffer) + desc = kmalloc(USB_DT_CONFIG_SIZE, GFP_KERNEL); + if (!desc) goto err2; - desc = (struct usb_config_descriptor *)buffer; result = 0; for (; cfgno < ncfg; cfgno++) { /* We grab just the first descriptor so we know how long * the whole configuration is */ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, - buffer, USB_DT_CONFIG_SIZE); + desc, USB_DT_CONFIG_SIZE); if (result < 0) { dev_err(ddev, "unable to read config index %d " "descriptor/%s: %d\n", cfgno, "start", result); @@ -823,7 +821,7 @@ int usb_get_configuration(struct usb_device *dev) result = 0; err: - kfree(buffer); + kfree(desc); out_not_authorized: dev->descriptor.bNumConfigurations = cfgno; err2: -- cgit v1.2.3-58-ga151 From 326b4810cc995209e31136af4202ed0414814ed5 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 19 Apr 2010 08:53:50 -0700 Subject: USB: clean up some host controller sparse warnings Fix usb sparse warnings: drivers/usb/host/isp1362-hcd.c:2220:50: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:43:24: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:49:24: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:161:24: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:198:16: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:319:31: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:1231:33: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-pci.c:177:23: warning: non-ANSI function declaration of function 'xhci_register_pci' drivers/usb/host/xhci-pci.c:182:26: warning: non-ANSI function declaration of function 'xhci_unregister_pci' drivers/usb/host/xhci-ring.c:342:32: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:525:34: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:1009:32: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:1031:32: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:1041:16: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:1096:30: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-ring.c:1100:27: warning: Using plain integer as NULL pointer drivers/usb/host/xhci-mem.c:224:27: warning: symbol 'xhci_alloc_container_ctx' was not declared. Should it be static? drivers/usb/host/xhci-mem.c:242:6: warning: symbol 'xhci_free_container_ctx' was not declared. Should it be static? Signed-off-by: Randy Dunlap Cc: Lothar Wassmann Signed-off By: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1362-hcd.c | 2 +- drivers/usb/host/xhci-mem.c | 16 ++++++++-------- drivers/usb/host/xhci-pci.c | 4 ++-- drivers/usb/host/xhci-ring.c | 14 +++++++------- 4 files changed, 18 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c index 6a6a50849bfe..20a0dfe0fe36 100644 --- a/drivers/usb/host/isp1362-hcd.c +++ b/drivers/usb/host/isp1362-hcd.c @@ -2217,7 +2217,7 @@ static void create_debug_file(struct isp1362_hcd *isp1362_hcd) static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) { if (isp1362_hcd->pde) - remove_proc_entry(proc_filename, 0); + remove_proc_entry(proc_filename, NULL); } #endif diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 5711048708d7..4df752cb0f78 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -41,13 +41,13 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, gfp_t flag seg = kzalloc(sizeof *seg, flags); if (!seg) - return 0; + return NULL; xhci_dbg(xhci, "Allocating priv segment structure at %p\n", seg); seg->trbs = dma_pool_alloc(xhci->segment_pool, flags, &dma); if (!seg->trbs) { kfree(seg); - return 0; + return NULL; } xhci_dbg(xhci, "// Allocating segment at %p (virtual) 0x%llx (DMA)\n", seg->trbs, (unsigned long long)dma); @@ -159,7 +159,7 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, ring = kzalloc(sizeof *(ring), flags); xhci_dbg(xhci, "Allocating ring at %p\n", ring); if (!ring) - return 0; + return NULL; INIT_LIST_HEAD(&ring->td_list); if (num_segs == 0) @@ -196,7 +196,7 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, fail: xhci_ring_free(xhci, ring); - return 0; + return NULL; } void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, @@ -247,7 +247,7 @@ static void xhci_reinit_cached_ring(struct xhci_hcd *xhci, #define CTX_SIZE(_hcc) (HCC_64BYTE_CONTEXT(_hcc) ? 64 : 32) -struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, +static struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, int type, gfp_t flags) { struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags); @@ -265,7 +265,7 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, return ctx; } -void xhci_free_container_ctx(struct xhci_hcd *xhci, +static void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { if (!ctx) @@ -764,7 +764,7 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) xhci_free_container_ctx(xhci, dev->out_ctx); kfree(xhci->devs[slot_id]); - xhci->devs[slot_id] = 0; + xhci->devs[slot_id] = NULL; } int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, @@ -1779,7 +1779,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) */ init_completion(&xhci->addr_dev); for (i = 0; i < MAX_HC_SLOTS; ++i) - xhci->devs[i] = 0; + xhci->devs[i] = NULL; if (scratchpad_alloc(xhci, flags)) goto fail; diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index d295bbc15eb7..edffd81fc253 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -177,12 +177,12 @@ static struct pci_driver xhci_pci_driver = { .shutdown = usb_hcd_pci_shutdown, }; -int xhci_register_pci() +int xhci_register_pci(void) { return pci_register_driver(&xhci_pci_driver); } -void xhci_unregister_pci() +void xhci_unregister_pci(void) { pci_unregister_driver(&xhci_pci_driver); } diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 16ef5fd77ce2..9e27eb0c7004 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -388,7 +388,7 @@ static struct xhci_segment *find_trb_seg( cur_seg = cur_seg->next; if (cur_seg == start_seg) /* Looped over the entire list. Oops! */ - return 0; + return NULL; } return cur_seg; } @@ -582,7 +582,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, struct xhci_ring *ep_ring; struct xhci_virt_ep *ep; struct list_head *entry; - struct xhci_td *cur_td = 0; + struct xhci_td *cur_td = NULL; struct xhci_td *last_unlinked_td; struct xhci_dequeue_state deq_state; @@ -1115,7 +1115,7 @@ struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, do { if (start_dma == 0) - return 0; + return NULL; /* We may get an event for a Link TRB in the middle of a TD */ end_seg_dma = xhci_trb_virt_to_dma(cur_seg, &cur_seg->trbs[TRBS_PER_SEGMENT - 1]); @@ -1137,7 +1137,7 @@ struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, suspect_dma <= end_trb_dma)) return cur_seg; } - return 0; + return NULL; } else { /* Might still be somewhere in this segment */ if (suspect_dma >= start_dma && suspect_dma <= end_seg_dma) @@ -1147,7 +1147,7 @@ struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, start_dma = xhci_trb_virt_to_dma(cur_seg, &cur_seg->trbs[0]); } while (cur_seg != start_seg); - return 0; + return NULL; } static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, @@ -1223,11 +1223,11 @@ static int handle_tx_event(struct xhci_hcd *xhci, struct xhci_ring *ep_ring; unsigned int slot_id; int ep_index; - struct xhci_td *td = 0; + struct xhci_td *td = NULL; dma_addr_t event_dma; struct xhci_segment *event_seg; union xhci_trb *event_trb; - struct urb *urb = 0; + struct urb *urb = NULL; int status = -EINPROGRESS; struct xhci_ep_ctx *ep_ctx; u32 trb_comp_code; -- cgit v1.2.3-58-ga151 From f48cf80f93ba974eb3201ab2d0f2c4cef950f3fc Mon Sep 17 00:00:00 2001 From: Fabien Chouteau Date: Fri, 23 Apr 2010 14:21:26 +0200 Subject: USB: Composite framework: Add suspended sysfs entry This patch adds a sysfs entry (/sys/devices/platform/_UDC_/gadget/suspended) to show the suspend state of an USB composite gadget. Signed-off-by: Fabien Chouteau Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/sysfs-devices-platform-_UDC_-gadget | 9 +++++++++ drivers/usb/gadget/composite.c | 21 +++++++++++++++++++++ include/linux/usb/composite.h | 1 + include/linux/usb/gadget.h | 4 ++++ 4 files changed, 35 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget (limited to 'drivers') diff --git a/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget b/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget new file mode 100644 index 000000000000..34034027b13c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget @@ -0,0 +1,9 @@ +What: /sys/devices/platform/_UDC_/gadget/suspended +Date: April 2010 +Contact: Fabien Chouteau +Description: + Show the suspend state of an USB composite gadget. + 1 -> suspended + 0 -> resumed + + (_UDC_ is the name of the USB Device Controller driver) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5465d8767f9a..f9aff1bbcb3e 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -898,6 +898,18 @@ static void composite_disconnect(struct usb_gadget *gadget) /*-------------------------------------------------------------------------*/ +static ssize_t composite_show_suspended(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct usb_gadget *gadget = dev_to_usb_gadget(dev); + struct usb_composite_dev *cdev = get_gadget_data(gadget); + + return sprintf(buf, "%d\n", cdev->suspended); +} + +static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); + static void /* __init_or_exit */ composite_unbind(struct usb_gadget *gadget) { @@ -944,6 +956,7 @@ composite_unbind(struct usb_gadget *gadget) } kfree(cdev); set_gadget_data(gadget, NULL); + device_remove_file(&gadget->dev, &dev_attr_suspended); composite = NULL; } @@ -1036,6 +1049,10 @@ static int __init composite_bind(struct usb_gadget *gadget) string_override(composite->strings, cdev->desc.iSerialNumber, iSerialNumber); + status = device_create_file(&gadget->dev, &dev_attr_suspended); + if (status) + goto fail; + INFO(cdev, "%s ready\n", composite->name); return 0; @@ -1064,6 +1081,8 @@ composite_suspend(struct usb_gadget *gadget) } if (composite->suspend) composite->suspend(cdev); + + cdev->suspended = 1; } static void @@ -1084,6 +1103,8 @@ composite_resume(struct usb_gadget *gadget) f->resume(f); } } + + cdev->suspended = 0; } /*-------------------------------------------------------------------------*/ diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 738ea1a691cb..139353efad34 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -326,6 +326,7 @@ struct usb_composite_dev { /* private: */ /* internals */ + unsigned int suspended:1; struct usb_device_descriptor desc; struct list_head configs; struct usb_composite_driver *driver; diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index f4b7ca516cdd..db6141cdb77b 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -494,6 +494,10 @@ static inline void set_gadget_data(struct usb_gadget *gadget, void *data) { dev_set_drvdata(&gadget->dev, data); } static inline void *get_gadget_data(struct usb_gadget *gadget) { return dev_get_drvdata(&gadget->dev); } +static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev) +{ + return container_of(dev, struct usb_gadget, dev); +} /* iterates the non-control endpoints; 'tmp' is a struct usb_ep pointer */ #define gadget_for_each_ep(tmp,gadget) \ -- cgit v1.2.3-58-ga151 From 31436a1a64b8eed834fba5d570038dd676e04842 Mon Sep 17 00:00:00 2001 From: Fabien Chouteau Date: Mon, 26 Apr 2010 12:34:54 +0200 Subject: USB: Mass storage gadget: Handle eject request This patch adds handling of the "Start/Stop Unit" SCSI request to simulate media ejection. Signed-off-by: Fabien Chouteau Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_mass_storage.c | 48 ++++++++++++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 9dbe86dec332..c904aa39ad84 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -163,6 +163,10 @@ * ro setting are not allowed when the medium is loaded or if CD-ROM * emulation is being used. * + * When a LUN receive an "eject" SCSI request (Start/Stop Unit), + * if the LUN is removable, the backing file is released to simulate + * ejection. + * * * This function is heavily based on "File-backed Storage Gadget" by * Alan Stern which in turn is heavily based on "Gadget Zero" by David @@ -1384,12 +1388,50 @@ static int do_mode_sense(struct fsg_common *common, struct fsg_buffhd *bh) static int do_start_stop(struct fsg_common *common) { - if (!common->curlun) { + struct fsg_lun *curlun = common->curlun; + int loej, start; + + if (!curlun) { return -EINVAL; - } else if (!common->curlun->removable) { - common->curlun->sense_data = SS_INVALID_COMMAND; + } else if (!curlun->removable) { + curlun->sense_data = SS_INVALID_COMMAND; + return -EINVAL; + } + + loej = common->cmnd[4] & 0x02; + start = common->cmnd[4] & 0x01; + + /* eject code from file_storage.c:do_start_stop() */ + + if ((common->cmnd[1] & ~0x01) != 0 || /* Mask away Immed */ + (common->cmnd[4] & ~0x03) != 0) { /* Mask LoEj, Start */ + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; return -EINVAL; } + + if (!start) { + /* Are we allowed to unload the media? */ + if (curlun->prevent_medium_removal) { + LDBG(curlun, "unload attempt prevented\n"); + curlun->sense_data = SS_MEDIUM_REMOVAL_PREVENTED; + return -EINVAL; + } + if (loej) { /* Simulate an unload/eject */ + up_read(&common->filesem); + down_write(&common->filesem); + fsg_lun_close(curlun); + up_write(&common->filesem); + down_read(&common->filesem); + } + } else { + + /* Our emulation doesn't support mounting; the medium is + * available for use as soon as it is loaded. */ + if (!fsg_lun_is_open(curlun)) { + curlun->sense_data = SS_MEDIUM_NOT_PRESENT; + return -EINVAL; + } + } return 0; } -- cgit v1.2.3-58-ga151 From 1170656d94aff5e86e003394134b9c3ecbdaf10a Mon Sep 17 00:00:00 2001 From: Alessio Igor Bogani Date: Sun, 25 Apr 2010 12:37:10 +0200 Subject: USB: sisusbvga: Remove the BKL from open BKL is not needed here because necessary locking is already provided by mutex sisusb->lock. Signed-off-by: Alessio Igor Bogani Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 63a6070a478a..30d930386b65 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -47,7 +47,6 @@ #include #include #include -#include #include #include "sisusb.h" @@ -2416,14 +2415,11 @@ sisusb_open(struct inode *inode, struct file *file) struct usb_interface *interface; int subminor = iminor(inode); - lock_kernel(); if (!(interface = usb_find_interface(&sisusb_driver, subminor))) { - unlock_kernel(); return -ENODEV; } if (!(sisusb = usb_get_intfdata(interface))) { - unlock_kernel(); return -ENODEV; } @@ -2431,13 +2427,11 @@ sisusb_open(struct inode *inode, struct file *file) if (!sisusb->present || !sisusb->ready) { mutex_unlock(&sisusb->lock); - unlock_kernel(); return -ENODEV; } if (sisusb->isopen) { mutex_unlock(&sisusb->lock); - unlock_kernel(); return -EBUSY; } @@ -2446,13 +2440,11 @@ sisusb_open(struct inode *inode, struct file *file) if (sisusb_init_gfxdevice(sisusb, 0)) { mutex_unlock(&sisusb->lock); dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n"); - unlock_kernel(); return -EIO; } } else { mutex_unlock(&sisusb->lock); dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n"); - unlock_kernel(); return -EIO; } } @@ -2465,7 +2457,6 @@ sisusb_open(struct inode *inode, struct file *file) file->private_data = sisusb; mutex_unlock(&sisusb->lock); - unlock_kernel(); return 0; } -- cgit v1.2.3-58-ga151 From fe662b43521a8b8ad2dc79299922d0b0bb3fe728 Mon Sep 17 00:00:00 2001 From: Alessio Igor Bogani Date: Sun, 25 Apr 2010 12:52:02 +0200 Subject: USB: mos7840: Cleanup useless header BKL isn't anymore present into this file thus it is no necessary still include smp_lock.h. Signed-off-by: Alessio Igor Bogani Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7840.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 2fda1c0182b7..f8424d1bfc1b 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -26,7 +26,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3-58-ga151 From da01c7a49bfc94dbfa66af5ca5e1063b10bc6a10 Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Mon, 26 Apr 2010 10:05:06 +0200 Subject: USB: g_hid: unregister platform driver on probe/usb_composite_register errors Otherwise reloads will fail. Signed-off-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/hid.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c index b77e97754b4a..775722686ed8 100644 --- a/drivers/usb/gadget/hid.c +++ b/drivers/usb/gadget/hid.c @@ -275,8 +275,18 @@ MODULE_LICENSE("GPL"); static int __init hidg_init(void) { - platform_driver_probe(&hidg_plat_driver, hidg_plat_driver_probe); - return usb_composite_register(&hidg_driver); + int status; + + status = platform_driver_probe(&hidg_plat_driver, + hidg_plat_driver_probe); + if (status < 0) + return status; + + status = usb_composite_register(&hidg_driver); + if (status < 0) + platform_driver_unregister(&hidg_plat_driver); + + return status; } module_init(hidg_init); -- cgit v1.2.3-58-ga151 From beb7b04a09a9da8b12417f7b74fbcceedb087fc3 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 30 Apr 2010 12:14:04 -0400 Subject: USB: remove leftover references to udev->autosuspend_disabled This patch (as1373) fixes a couple of drivers outside the USB subtree. Devices are now disabled or enabled for autosuspend by calling a core function instead of setting a flag. Signed-off-by: Alan Stern Cc: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman --- drivers/media/video/tlg2300/pd-main.c | 2 +- drivers/net/wimax/i2400m/usb.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/tlg2300/pd-main.c b/drivers/media/video/tlg2300/pd-main.c index 2cf0ebf9f28b..a6400dad12ae 100644 --- a/drivers/media/video/tlg2300/pd-main.c +++ b/drivers/media/video/tlg2300/pd-main.c @@ -455,8 +455,8 @@ static int poseidon_probe(struct usb_interface *interface, device_init_wakeup(&udev->dev, 1); #ifdef CONFIG_PM - pd->udev->autosuspend_disabled = 0; pd->udev->autosuspend_delay = HZ * PM_SUSPEND_DELAY; + usb_enable_autosuspend(pd->udev); if (in_hibernation(pd)) { INIT_WORK(&pd->pm_work, hibernation_resume); diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c index d8c4d6497fdf..d555e37a665c 100644 --- a/drivers/net/wimax/i2400m/usb.c +++ b/drivers/net/wimax/i2400m/usb.c @@ -505,7 +505,7 @@ int i2400mu_probe(struct usb_interface *iface, iface->needs_remote_wakeup = 1; /* autosuspend (15s delay) */ device_init_wakeup(dev, 1); usb_dev->autosuspend_delay = 15 * HZ; - usb_dev->autosuspend_disabled = 0; + usb_enable_autosuspend(usb_dev); #endif result = i2400m_setup(i2400m, I2400M_BRI_MAC_REINIT); -- cgit v1.2.3-58-ga151 From 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 30 Apr 2010 12:44:46 -0400 Subject: USB: remove the usb_host_ss_ep_comp structure This patch (as1375) eliminates the usb_host_ss_ep_comp structure used for storing a dynamically-allocated copy of the SuperSpeed endpoint companion descriptor. The SuperSpeed descriptor is placed directly in the usb_host_endpoint structure, alongside the standard endpoint descriptor. Signed-off-by: Alan Stern Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 185 +++++++++++++------------------------------- drivers/usb/host/xhci-mem.c | 22 ++---- drivers/usb/host/xhci.c | 13 +--- include/linux/usb.h | 19 +---- 4 files changed, 68 insertions(+), 171 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index e4909c26becb..83126b03e7cf 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -21,32 +21,6 @@ static inline const char *plural(int n) return (n == 1 ? "" : "s"); } -/* FIXME: this is a kludge */ -static int find_next_descriptor_more(unsigned char *buffer, int size, - int dt1, int dt2, int dt3, int *num_skipped) -{ - struct usb_descriptor_header *h; - int n = 0; - unsigned char *buffer0 = buffer; - - /* Find the next descriptor of type dt1 or dt2 or dt3 */ - while (size > 0) { - h = (struct usb_descriptor_header *) buffer; - if (h->bDescriptorType == dt1 || h->bDescriptorType == dt2 || - h->bDescriptorType == dt3) - break; - buffer += h->bLength; - size -= h->bLength; - ++n; - } - - /* Store the number of descriptors skipped and return the - * number of bytes skipped */ - if (num_skipped) - *num_skipped = n; - return buffer - buffer0; -} - static int find_next_descriptor(unsigned char *buffer, int size, int dt1, int dt2, int *num_skipped) { @@ -71,47 +45,41 @@ static int find_next_descriptor(unsigned char *buffer, int size, return buffer - buffer0; } -static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, +static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, - int num_ep, unsigned char *buffer, int size) + unsigned char *buffer, int size) { - unsigned char *buffer_start = buffer; - struct usb_ss_ep_comp_descriptor *desc; - int retval; - int num_skipped; + struct usb_ss_ep_comp_descriptor *desc; int max_tx; - int i; + /* The SuperSpeed endpoint companion descriptor is supposed to + * be the first thing immediately following the endpoint descriptor. + */ desc = (struct usb_ss_ep_comp_descriptor *) buffer; - if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP) { + if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP || + size < USB_DT_SS_EP_COMP_SIZE) { dev_warn(ddev, "No SuperSpeed endpoint companion for config %d " " interface %d altsetting %d ep %d: " "using minimum values\n", cfgno, inum, asnum, ep->desc.bEndpointAddress); - /* - * The next descriptor is for an Endpoint or Interface, - * no extra descriptors to copy into the companion structure, - * and we didn't eat up any of the buffer. + + /* Fill in some default values. + * Leave bmAttributes as zero, which will mean no streams for + * bulk, and isoc won't support multiple bursts of packets. + * With bursts of only one packet, and a Mult of 1, the max + * amount of data moved per endpoint service interval is one + * packet. */ - return 0; + ep->ss_ep_comp.bLength = USB_DT_SS_EP_COMP_SIZE; + ep->ss_ep_comp.bDescriptorType = USB_DT_SS_ENDPOINT_COMP; + if (usb_endpoint_xfer_isoc(&ep->desc) || + usb_endpoint_xfer_int(&ep->desc)) + ep->ss_ep_comp.wBytesPerInterval = + ep->desc.wMaxPacketSize; + return; } - memcpy(&ep->ss_ep_comp->desc, desc, USB_DT_SS_EP_COMP_SIZE); - desc = &ep->ss_ep_comp->desc; - buffer += desc->bLength; - size -= desc->bLength; - /* Eat up the other descriptors we don't care about */ - ep->ss_ep_comp->extra = buffer; - i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, - USB_DT_INTERFACE, &num_skipped); - ep->ss_ep_comp->extralen = i; - buffer += i; - size -= i; - retval = buffer - buffer_start; - if (num_skipped > 0) - dev_dbg(ddev, "skipped %d descriptor%s after %s\n", - num_skipped, plural(num_skipped), - "SuperSpeed endpoint companion"); + memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE); /* Check the various values */ if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) { @@ -119,47 +87,48 @@ static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, "config %d interface %d altsetting %d ep %d: " "setting to zero\n", desc->bMaxBurst, cfgno, inum, asnum, ep->desc.bEndpointAddress); - desc->bMaxBurst = 0; - } - if (desc->bMaxBurst > 15) { + ep->ss_ep_comp.bMaxBurst = 0; + } else if (desc->bMaxBurst > 15) { dev_warn(ddev, "Endpoint with bMaxBurst = %d in " "config %d interface %d altsetting %d ep %d: " "setting to 15\n", desc->bMaxBurst, cfgno, inum, asnum, ep->desc.bEndpointAddress); - desc->bMaxBurst = 15; + ep->ss_ep_comp.bMaxBurst = 15; } - if ((usb_endpoint_xfer_control(&ep->desc) || usb_endpoint_xfer_int(&ep->desc)) - && desc->bmAttributes != 0) { + + if ((usb_endpoint_xfer_control(&ep->desc) || + usb_endpoint_xfer_int(&ep->desc)) && + desc->bmAttributes != 0) { dev_warn(ddev, "%s endpoint with bmAttributes = %d in " "config %d interface %d altsetting %d ep %d: " "setting to zero\n", usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk", desc->bmAttributes, cfgno, inum, asnum, ep->desc.bEndpointAddress); - desc->bmAttributes = 0; - } - if (usb_endpoint_xfer_bulk(&ep->desc) && desc->bmAttributes > 16) { + ep->ss_ep_comp.bmAttributes = 0; + } else if (usb_endpoint_xfer_bulk(&ep->desc) && + desc->bmAttributes > 16) { dev_warn(ddev, "Bulk endpoint with more than 65536 streams in " "config %d interface %d altsetting %d ep %d: " "setting to max\n", cfgno, inum, asnum, ep->desc.bEndpointAddress); - desc->bmAttributes = 16; - } - if (usb_endpoint_xfer_isoc(&ep->desc) && desc->bmAttributes > 2) { + ep->ss_ep_comp.bmAttributes = 16; + } else if (usb_endpoint_xfer_isoc(&ep->desc) && + desc->bmAttributes > 2) { dev_warn(ddev, "Isoc endpoint has Mult of %d in " "config %d interface %d altsetting %d ep %d: " "setting to 3\n", desc->bmAttributes + 1, cfgno, inum, asnum, ep->desc.bEndpointAddress); - desc->bmAttributes = 2; + ep->ss_ep_comp.bmAttributes = 2; } - if (usb_endpoint_xfer_isoc(&ep->desc)) { + + if (usb_endpoint_xfer_isoc(&ep->desc)) max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1) * (desc->bmAttributes + 1); - } else if (usb_endpoint_xfer_int(&ep->desc)) { + else if (usb_endpoint_xfer_int(&ep->desc)) max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1); - } else { - goto valid; - } + else + max_tx = 999999; if (desc->wBytesPerInterval > max_tx) { dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in " "config %d interface %d altsetting %d ep %d: " @@ -168,10 +137,8 @@ static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, desc->wBytesPerInterval, cfgno, inum, asnum, ep->desc.bEndpointAddress, max_tx); - desc->wBytesPerInterval = max_tx; + ep->ss_ep_comp.wBytesPerInterval = max_tx; } -valid: - return retval; } static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, @@ -293,61 +260,19 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, cfgno, inum, asnum, d->bEndpointAddress, maxp); } - /* Allocate room for and parse any SS endpoint companion descriptors */ - if (to_usb_device(ddev)->speed == USB_SPEED_SUPER) { - endpoint->extra = buffer; - i = find_next_descriptor_more(buffer, size, USB_DT_SS_ENDPOINT_COMP, - USB_DT_ENDPOINT, USB_DT_INTERFACE, &n); - endpoint->extralen = i; - buffer += i; - size -= i; - - /* Allocate space for the SS endpoint companion descriptor */ - endpoint->ss_ep_comp = kzalloc(sizeof(struct usb_host_ss_ep_comp), - GFP_KERNEL); - if (!endpoint->ss_ep_comp) - return -ENOMEM; - /* Fill in some default values (may be overwritten later) */ - endpoint->ss_ep_comp->desc.bLength = USB_DT_SS_EP_COMP_SIZE; - endpoint->ss_ep_comp->desc.bDescriptorType = USB_DT_SS_ENDPOINT_COMP; - endpoint->ss_ep_comp->desc.bMaxBurst = 0; - /* - * Leave bmAttributes as zero, which will mean no streams for - * bulk, and isoc won't support multiple bursts of packets. - * With bursts of only one packet, and a Mult of 1, the max - * amount of data moved per endpoint service interval is one - * packet. - */ - if (usb_endpoint_xfer_isoc(&endpoint->desc) || - usb_endpoint_xfer_int(&endpoint->desc)) - endpoint->ss_ep_comp->desc.wBytesPerInterval = - endpoint->desc.wMaxPacketSize; - - if (size > 0) { - retval = usb_parse_ss_endpoint_companion(ddev, cfgno, - inum, asnum, endpoint, num_ep, buffer, - size); - if (retval >= 0) { - buffer += retval; - retval = buffer - buffer0; - } - } else { - dev_warn(ddev, "config %d interface %d altsetting %d " - "endpoint 0x%X has no " - "SuperSpeed companion descriptor\n", - cfgno, inum, asnum, d->bEndpointAddress); - retval = buffer - buffer0; - } - } else { - /* Skip over any Class Specific or Vendor Specific descriptors; - * find the next endpoint or interface descriptor */ - endpoint->extra = buffer; - i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, - USB_DT_INTERFACE, &n); - endpoint->extralen = i; - retval = buffer - buffer0 + i; - } + /* Parse a possible SuperSpeed endpoint companion descriptor */ + if (to_usb_device(ddev)->speed == USB_SPEED_SUPER) + usb_parse_ss_endpoint_companion(ddev, cfgno, + inum, asnum, endpoint, buffer, size); + + /* Skip over any Class Specific or Vendor Specific descriptors; + * find the next endpoint or interface descriptor */ + endpoint->extra = buffer; + i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, + USB_DT_INTERFACE, &n); + endpoint->extralen = i; + retval = buffer - buffer0 + i; if (n > 0) dev_dbg(ddev, "skipped %d descriptor%s after %s\n", n, plural(n), "endpoint"); diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 4df752cb0f78..fd9e03afd91c 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1010,9 +1010,9 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev, static inline u32 xhci_get_endpoint_mult(struct usb_device *udev, struct usb_host_endpoint *ep) { - if (udev->speed != USB_SPEED_SUPER || !ep->ss_ep_comp) + if (udev->speed != USB_SPEED_SUPER) return 0; - return ep->ss_ep_comp->desc.bmAttributes; + return ep->ss_ep_comp.bmAttributes; } static inline u32 xhci_get_endpoint_type(struct usb_device *udev, @@ -1061,13 +1061,8 @@ static inline u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci, usb_endpoint_xfer_bulk(&ep->desc)) return 0; - if (udev->speed == USB_SPEED_SUPER) { - if (ep->ss_ep_comp) - return ep->ss_ep_comp->desc.wBytesPerInterval; - xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n"); - /* Assume no bursts, no multiple opportunities to send. */ - return ep->desc.wMaxPacketSize; - } + if (udev->speed == USB_SPEED_SUPER) + return ep->ss_ep_comp.wBytesPerInterval; max_packet = ep->desc.wMaxPacketSize & 0x3ff; max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; @@ -1131,12 +1126,9 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, max_packet = ep->desc.wMaxPacketSize; ep_ctx->ep_info2 |= MAX_PACKET(max_packet); /* dig out max burst from ep companion desc */ - if (!ep->ss_ep_comp) { - xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n"); - max_packet = 0; - } else { - max_packet = ep->ss_ep_comp->desc.bMaxBurst; - } + max_packet = ep->ss_ep_comp.bMaxBurst; + if (!max_packet) + xhci_warn(xhci, "WARN no SS endpoint bMaxBurst\n"); ep_ctx->ep_info2 |= MAX_BURST(max_packet); break; case USB_SPEED_HIGH: diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 3cac2ff8b50a..59f38a5f2fe6 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1476,13 +1476,7 @@ static int xhci_check_streams_endpoint(struct xhci_hcd *xhci, ret = xhci_check_args(xhci_to_hcd(xhci), udev, ep, 1, __func__); if (ret <= 0) return -EINVAL; - if (!ep->ss_ep_comp) { - xhci_warn(xhci, "WARN: No SuperSpeed Endpoint Companion" - " descriptor for ep 0x%x\n", - ep->desc.bEndpointAddress); - return -EINVAL; - } - if (ep->ss_ep_comp->desc.bmAttributes == 0) { + if (ep->ss_ep_comp.bmAttributes == 0) { xhci_warn(xhci, "WARN: SuperSpeed Endpoint Companion" " descriptor for ep 0x%x does not support streams\n", ep->desc.bEndpointAddress); @@ -1540,7 +1534,6 @@ static int xhci_calculate_streams_and_bitmask(struct xhci_hcd *xhci, struct usb_host_endpoint **eps, unsigned int num_eps, unsigned int *num_streams, u32 *changed_ep_bitmask) { - struct usb_host_ss_ep_comp *ss_ep_comp; unsigned int max_streams; unsigned int endpoint_flag; int i; @@ -1552,8 +1545,8 @@ static int xhci_calculate_streams_and_bitmask(struct xhci_hcd *xhci, if (ret < 0) return ret; - ss_ep_comp = eps[i]->ss_ep_comp; - max_streams = USB_SS_MAX_STREAMS(ss_ep_comp->desc.bmAttributes); + max_streams = USB_SS_MAX_STREAMS( + eps[i]->ss_ep_comp.bmAttributes); if (max_streams < (*num_streams - 1)) { xhci_dbg(xhci, "Ep 0x%x only supports %u stream IDs.\n", eps[i]->desc.bEndpointAddress, diff --git a/include/linux/usb.h b/include/linux/usb.h index 1ea25377ca0d..a748815ee629 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -45,27 +45,14 @@ struct wusb_dev; struct ep_device; -/* For SS devices */ -/** - * struct usb_host_ss_ep_comp - Valid for SuperSpeed devices only - * @desc: endpoint companion descriptor, wMaxPacketSize in native byteorder - * @extra: descriptors following this endpoint companion descriptor - * @extralen: how many bytes of "extra" are valid - */ -struct usb_host_ss_ep_comp { - struct usb_ss_ep_comp_descriptor desc; - unsigned char *extra; /* Extra descriptors */ - int extralen; -}; - /** * struct usb_host_endpoint - host-side endpoint descriptor and queue * @desc: descriptor for this endpoint, wMaxPacketSize in native byteorder + * @ss_ep_comp: SuperSpeed companion descriptor for this endpoint * @urb_list: urbs queued to this endpoint; maintained by usbcore * @hcpriv: for use by HCD; typically holds hardware dma queue head (QH) * with one or more transfer descriptors (TDs) per urb * @ep_dev: ep_device for sysfs info - * @ss_ep_comp: companion descriptor information for this endpoint * @extra: descriptors following this endpoint in the configuration * @extralen: how many bytes of "extra" are valid * @enabled: URBs may be submitted to this endpoint @@ -74,11 +61,11 @@ struct usb_host_ss_ep_comp { * descriptor within an active interface in a given USB configuration. */ struct usb_host_endpoint { - struct usb_endpoint_descriptor desc; + struct usb_endpoint_descriptor desc; + struct usb_ss_ep_comp_descriptor ss_ep_comp; struct list_head urb_list; void *hcpriv; struct ep_device *ep_dev; /* For sysfs info */ - struct usb_host_ss_ep_comp *ss_ep_comp; /* For SS devices */ unsigned char *extra; /* Extra descriptors */ int extralen; -- cgit v1.2.3-58-ga151 From 85bcb5ee889e0ebb9154718939e049de265fcdfb Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 30 Apr 2010 16:35:37 -0400 Subject: USB: remove URB_NO_SETUP_DMA_MAP Now that URB_NO_SETUP_DMA_MAP is no longer in use, this patch (as1376) removes all references to it. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- Documentation/usb/dma.txt | 18 ++++++------------ drivers/staging/usbip/usbip_common.c | 2 +- drivers/usb/core/hcd.c | 3 +-- include/linux/usb.h | 28 +++++++++++----------------- 4 files changed, 19 insertions(+), 32 deletions(-) (limited to 'drivers') diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt index a37e59cf2786..84ef865237db 100644 --- a/Documentation/usb/dma.txt +++ b/Documentation/usb/dma.txt @@ -16,11 +16,11 @@ OR: they can now be DMA-aware. manage dma mappings for existing dma-ready buffers (see below). - URBs have an additional "transfer_dma" field, as well as a transfer_flags - bit saying if it's valid. (Control requests also have "setup_dma" and a - corresponding transfer_flags bit.) + bit saying if it's valid. (Control requests also have "setup_dma", but + drivers must not use it.) -- "usbcore" will map those DMA addresses, if a DMA-aware driver didn't do - it first and set URB_NO_TRANSFER_DMA_MAP or URB_NO_SETUP_DMA_MAP. HCDs +- "usbcore" will map this DMA address, if a DMA-aware driver didn't do + it first and set URB_NO_TRANSFER_DMA_MAP. HCDs don't manage dma mappings for URBs. - There's a new "generic DMA API", parts of which are usable by USB device @@ -53,12 +53,6 @@ and effects like cache-trashing can impose subtle penalties. to use this type of memory ("dma-coherent"), and memory returned from kmalloc() will work just fine. - For control transfers you can use the buffer primitives or not for each - of the transfer buffer and setup buffer independently. Set the flag bits - URB_NO_TRANSFER_DMA_MAP and URB_NO_SETUP_DMA_MAP to indicate which - buffers you have prepared. For non-control transfers URB_NO_SETUP_DMA_MAP - is ignored. - The memory buffer returned is "dma-coherent"; sometimes you might need to force a consistent memory access ordering by using memory barriers. It's not using a streaming DMA mapping, so it's good for small transfers on @@ -130,8 +124,8 @@ of Documentation/PCI/PCI-DMA-mapping.txt, titled "What memory is DMA-able?") void usb_buffer_unmap (struct urb *urb); The calls manage urb->transfer_dma for you, and set URB_NO_TRANSFER_DMA_MAP - so that usbcore won't map or unmap the buffer. The same goes for - urb->setup_dma and URB_NO_SETUP_DMA_MAP for control requests. + so that usbcore won't map or unmap the buffer. They cannot be used for + setup_packet buffers in control requests. Note that several of those interfaces are currently commented out, since they don't have current users. See the source code. Other than the dmasync diff --git a/drivers/staging/usbip/usbip_common.c b/drivers/staging/usbip/usbip_common.c index e3fa4216c1cd..52408164036f 100644 --- a/drivers/staging/usbip/usbip_common.c +++ b/drivers/staging/usbip/usbip_common.c @@ -562,7 +562,7 @@ EXPORT_SYMBOL_GPL(sockfd_to_socket); /* there may be more cases to tweak the flags. */ static unsigned int tweak_transfer_flags(unsigned int flags) { - flags &= ~(URB_NO_TRANSFER_DMA_MAP|URB_NO_SETUP_DMA_MAP); + flags &= ~URB_NO_TRANSFER_DMA_MAP; return flags; } diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 3aaee2811f01..0abc5c537f39 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1316,8 +1316,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, * or uses the provided scatter gather list for bulk. */ - if (usb_endpoint_xfer_control(&urb->ep->desc) - && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) { + if (usb_endpoint_xfer_control(&urb->ep->desc)) { if (hcd->self.uses_dma) { urb->setup_dma = dma_map_single( hcd->self.controller, diff --git a/include/linux/usb.h b/include/linux/usb.h index a748815ee629..1eb4762d9ea8 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -953,7 +953,6 @@ extern int usb_disabled(void); #define URB_ISO_ASAP 0x0002 /* iso-only, urb->start_frame * ignored */ #define URB_NO_TRANSFER_DMA_MAP 0x0004 /* urb->transfer_dma valid on submit */ -#define URB_NO_SETUP_DMA_MAP 0x0008 /* urb->setup_dma valid on submit */ #define URB_NO_FSBR 0x0020 /* UHCI-specific */ #define URB_ZERO_PACKET 0x0040 /* Finish bulk OUT with short packet */ #define URB_NO_INTERRUPT 0x0080 /* HINT: no non-error interrupt @@ -1049,12 +1048,8 @@ typedef void (*usb_complete_t)(struct urb *); * @setup_packet: Only used for control transfers, this points to eight bytes * of setup data. Control transfers always start by sending this data * to the device. Then transfer_buffer is read or written, if needed. - * @setup_dma: For control transfers with URB_NO_SETUP_DMA_MAP set, the - * device driver has provided this DMA address for the setup packet. - * The host controller driver should use this in preference to - * setup_packet, but the HCD may chose to ignore the address if it must - * copy the setup packet into internal structures. Therefore, setup_packet - * must always point to a valid buffer. + * @setup_dma: DMA pointer for the setup packet. The caller must not use + * this field; setup_packet must point to a valid buffer. * @start_frame: Returns the initial frame for isochronous transfers. * @number_of_packets: Lists the number of ISO transfer buffers. * @interval: Specifies the polling interval for interrupt or isochronous @@ -1086,13 +1081,14 @@ typedef void (*usb_complete_t)(struct urb *); * bounce buffer or talking to an IOMMU), * although they're cheap on commodity x86 and ppc hardware. * - * Alternatively, drivers may pass the URB_NO_xxx_DMA_MAP transfer flags, - * which tell the host controller driver that no such mapping is needed since + * Alternatively, drivers may pass the URB_NO_TRANSFER_DMA_MAP transfer flag, + * which tells the host controller driver that no such mapping is needed for + * the transfer_buffer since * the device driver is DMA-aware. For example, a device driver might * allocate a DMA buffer with usb_alloc_coherent() or call usb_buffer_map(). - * When these transfer flags are provided, host controller drivers will - * attempt to use the dma addresses found in the transfer_dma and/or - * setup_dma fields rather than determining a dma address themselves. + * When this transfer flag is provided, host controller drivers will + * attempt to use the dma address found in the transfer_dma + * field rather than determining a dma address themselves. * * Note that transfer_buffer must still be set if the controller * does not support DMA (as indicated by bus.uses_dma) and when talking @@ -1115,11 +1111,9 @@ typedef void (*usb_complete_t)(struct urb *); * should always terminate with a short packet, even if it means adding an * extra zero length packet. * - * Control URBs must provide a setup_packet. The setup_packet and - * transfer_buffer may each be mapped for DMA or not, independently of - * the other. The transfer_flags bits URB_NO_TRANSFER_DMA_MAP and - * URB_NO_SETUP_DMA_MAP indicate which buffers have already been mapped. - * URB_NO_SETUP_DMA_MAP is ignored for non-control URBs. + * Control URBs must provide a valid pointer in the setup_packet field. + * Unlike the transfer_buffer, the setup_packet may not be mapped for DMA + * beforehand. * * Interrupt URBs must provide an interval, saying how often (in milliseconds * or, for highspeed devices, 125 microsecond units) -- cgit v1.2.3-58-ga151 From 8a007748fbadb8317d0af289f3bca5694354d63a Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Fri, 30 Apr 2010 15:37:56 -0700 Subject: USB: xhci: Avoid double free after streams are disabled. When a device is disconnected, xhci_free_virt_device() is called. Ramya found that if the device had streams enabled, and then the driver freed the streams with a call to usb_free_streams(), then about a minute after he had called this, his machine crashed with a Bad DMA error. It turns out that xhci_free_virt_device() would attempt to free the endpoint's stream_info data structure if it wasn't NULL, and the free streams function was not setting it to NULL after freeing it. Signed-off-by: Sarah Sharp Tested-by: Ramya Desai Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 59f38a5f2fe6..a9b836d4b290 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1746,6 +1746,7 @@ cleanup: for (i = 0; i < num_eps; i++) { ep_index = xhci_get_endpoint_index(&eps[i]->desc); xhci_free_stream_info(xhci, vdev->eps[ep_index].stream_info); + vdev->eps[ep_index].stream_info = NULL; /* FIXME Unset maxPstreams in endpoint context and * update deq ptr to point to normal string ring. */ @@ -1826,6 +1827,7 @@ int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, for (i = 0; i < num_eps; i++) { ep_index = xhci_get_endpoint_index(&eps[i]->desc); xhci_free_stream_info(xhci, vdev->eps[ep_index].stream_info); + vdev->eps[ep_index].stream_info = NULL; /* FIXME Unset maxPstreams in endpoint context and * update deq ptr to point to normal string ring. */ -- cgit v1.2.3-58-ga151 From a71ee85e1d74e862d68cc9b2f2ab6a806d2550c9 Mon Sep 17 00:00:00 2001 From: zhao1980ming Date: Mon, 3 May 2010 00:06:37 +0800 Subject: USB: option: add PID for ZTE product this patch adds ZTE modem devices Signed-off-by: Joey Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 174 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 1775e4554659..030f65a27fc0 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -654,6 +654,180 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0160, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0161, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0162, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1012, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1057, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1058, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1059, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1060, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1061, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1062, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1063, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1064, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1065, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1066, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1067, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1068, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1069, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1070, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1071, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1072, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1073, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1074, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1075, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1076, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1077, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1078, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1079, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1080, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1081, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1082, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1083, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1084, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1085, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1086, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1087, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1088, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1089, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1090, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1091, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1092, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1093, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1094, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1095, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1096, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1097, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1098, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1099, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1100, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1101, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1102, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1103, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1104, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1105, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1106, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1107, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1108, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1109, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1110, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1111, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1112, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1113, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1114, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1115, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1116, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1117, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1118, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1119, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1120, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1121, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1122, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1123, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1124, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1125, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1126, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1127, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1128, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1129, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1130, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1131, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1132, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1133, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1134, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1135, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1136, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1137, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1138, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1139, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1140, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1141, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1142, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1143, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1144, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1145, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1146, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1147, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1148, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1149, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1150, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1151, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1152, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1153, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1154, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1155, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1156, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1157, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1158, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1159, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1160, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1161, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1162, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1163, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1164, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1165, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1166, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1167, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1168, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1169, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1170, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1244, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1245, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1246, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1247, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1248, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1249, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1250, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1251, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1252, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1253, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1254, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1255, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1256, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1257, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1258, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1259, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1260, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1261, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1262, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1263, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1264, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1265, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1266, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1267, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1268, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1269, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1270, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1271, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1272, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1273, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1274, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1275, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1276, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1277, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1278, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1279, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1280, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1281, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1282, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1283, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1284, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1285, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1286, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1287, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1288, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1289, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1290, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1291, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1292, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1293, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1294, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1295, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1296, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1297, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1298, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1299, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1300, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0014, 0xff, 0xff, 0xff) }, /* ZTE CDMA products */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0027, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0059, 0xff, 0xff, 0xff) }, -- cgit v1.2.3-58-ga151 From f5cddcd0995366f15d2b6b0df556a2cd99fa806e Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 3 May 2010 13:41:01 -0700 Subject: USB: qcaux: add Samsung U520 device ID Another CDC-ACM + vendor specific interface layout. Signed-off-by: Dan Williams Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcaux.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/qcaux.c b/drivers/usb/serial/qcaux.c index 7e3bea23600b..214a3e504292 100644 --- a/drivers/usb/serial/qcaux.c +++ b/drivers/usb/serial/qcaux.c @@ -50,6 +50,10 @@ #define SANYO_VENDOR_ID 0x0474 #define SANYO_PRODUCT_KATANA_LX 0x0754 /* SCP-3800 (Katana LX) */ +/* Samsung devices */ +#define SAMSUNG_VENDOR_ID 0x04e8 +#define SAMSUNG_PRODUCT_U520 0x6640 /* SCH-U520 */ + static struct usb_device_id id_table[] = { { USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_PC5740, 0xff, 0x00, 0x00) }, { USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_PC5750, 0xff, 0x00, 0x00) }, @@ -61,6 +65,7 @@ static struct usb_device_id id_table[] = { { USB_DEVICE_AND_INTERFACE_INFO(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDX650, 0xff, 0xff, 0x00) }, { USB_DEVICE_AND_INTERFACE_INFO(LG_VENDOR_ID, LG_PRODUCT_VX4400_6000, 0xff, 0xff, 0x00) }, { USB_DEVICE_AND_INTERFACE_INFO(SANYO_VENDOR_ID, SANYO_PRODUCT_KATANA_LX, 0xff, 0xff, 0x00) }, + { USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_U520, 0xff, 0x00, 0x00) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); -- cgit v1.2.3-58-ga151 From 289621c31bffb743e4007f6332b9004cdd080644 Mon Sep 17 00:00:00 2001 From: Ajay Kumar Gupta Date: Tue, 4 May 2010 19:53:09 +0530 Subject: usb: ehci-omap: fix compilation warning Fixes below compilation warning: drivers/usb/host/ehci-hcd.c:425: warning: 'ehci_port_power' defined but not used Signed-off-by: Ajay Kumar Gupta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 40a858335035..711332ebdab5 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -659,6 +659,9 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) goto err_add_hcd; } + /* root ports should always stay powered */ + ehci_port_power(omap->ehci, 1); + return 0; err_add_hcd: -- cgit v1.2.3-58-ga151 From 97dc7c61f1a25e906c0eb65fac2573e1ce063d63 Mon Sep 17 00:00:00 2001 From: Ajay Kumar Gupta Date: Tue, 4 May 2010 13:15:23 +0530 Subject: USB: ehci-omap: fix Si version related programming AM3517 is based on ES3.1 thus ES2.x related programming is invalid for it so updating ES2.x programming. Also fixed below checkpatch warning: WARNING: unnecessary whitespace before a quoted newline Signed-off-by: Ajay Kumar Gupta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 711332ebdab5..992d963b91fc 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -352,8 +352,8 @@ static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd) reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; /* Bypass the TLL module for PHY mode operation */ - if (omap_rev() <= OMAP3430_REV_ES2_1) { - dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1 \n"); + if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) { + dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1\n"); if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) || (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) || (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY)) -- cgit v1.2.3-58-ga151 From 88e3b59b5adce5b12e205af0e34d518ba0dcdc0c Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Tue, 4 May 2010 10:03:01 -0500 Subject: USB: mxc: gadget: Fix bitfield for calculating maximum packet size The max packet length bit mask used for isochronous endpoints should be 0x7FF instead of 0x8FF. 0x8FF will actually clear higher-order bits in the max packet length field. This patch applies to 2.6.34-rc6. Signed-off-by: Dinh Nguyen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/fsl_udc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index fa3d142ba64d..08a9a62a39e3 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -489,7 +489,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, case USB_ENDPOINT_XFER_ISOC: /* Calculate transactions needed for high bandwidth iso */ mult = (unsigned char)(1 + ((max >> 11) & 0x03)); - max = max & 0x8ff; /* bit 0~10 */ + max = max & 0x7ff; /* bit 0~10 */ /* 3 transactions at most */ if (mult > 3) goto en_done; -- cgit v1.2.3-58-ga151 From a78f4f1a16d87f3d33158d036af94e48e32f8aad Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 29 Apr 2010 12:59:04 +0200 Subject: USB: unusual-dev: Add bad sense flag for Appotech ax203 based picture frames These Appotech controllers are found in Picture Frames, they provide a (buggy) emulation of a cdrom drive which contains the windows software Uploading of pictures happens over the corresponding /dev/sg device. Signed-off-by: Hans de Goede Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index b402d5f27272..2c897eefadde 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1844,6 +1844,21 @@ UNUSUAL_DEV( 0x1652, 0x6600, 0x0201, 0x0201, US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_IGNORE_RESIDUE ), +/* Reported by Hans de Goede + * These Appotech controllers are found in Picture Frames, they provide a + * (buggy) emulation of a cdrom drive which contains the windows software + * Uploading of pictures happens over the corresponding /dev/sg device. */ +UNUSUAL_DEV( 0x1908, 0x1315, 0x0000, 0x0000, + "BUILDWIN", + "Photo Frame", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_BAD_SENSE ), +UNUSUAL_DEV( 0x1908, 0x1320, 0x0000, 0x0000, + "BUILDWIN", + "Photo Frame", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_BAD_SENSE ), + UNUSUAL_DEV( 0x2116, 0x0320, 0x0001, 0x0001, "ST", "2A", -- cgit v1.2.3-58-ga151 From 277aa97254533c7e49a04244dfbdccbae70a7f0e Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 28 Apr 2010 16:59:33 -0400 Subject: USB: whci: declare functions as static qset_print() was not declared static although it is not used outside of debug.c Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/whci/debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/whci/debug.c b/drivers/usb/host/whci/debug.c index c5305b599ca0..767af265e002 100644 --- a/drivers/usb/host/whci/debug.c +++ b/drivers/usb/host/whci/debug.c @@ -30,7 +30,7 @@ struct whc_dbg { struct dentry *pzl_f; }; -void qset_print(struct seq_file *s, struct whc_qset *qset) +static void qset_print(struct seq_file *s, struct whc_qset *qset) { static const char *qh_type[] = { "ctrl", "isoc", "bulk", "intr", "rsvd", "rsvd", "rsvd", "lpintr", }; -- cgit v1.2.3-58-ga151 From 7d7917bcbd9bdc61e7daa46ce74f7032aa4bfb3d Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 28 Apr 2010 16:59:35 -0400 Subject: USB: oti6858: declare send_data() as static Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/oti6858.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index deeacdea05db..525d8523df95 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -295,7 +295,7 @@ static void setup_line(struct work_struct *work) } } -void send_data(struct work_struct *work) +static void send_data(struct work_struct *work) { struct oti6858_private *priv = container_of(work, struct oti6858_private, delayed_write_work.work); -- cgit v1.2.3-58-ga151 From 993e33b032cfc072898bab78b8fa8b21bc666c7e Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 28 Apr 2010 16:59:36 -0400 Subject: usb: sisusb_con.c: fix shadows sparse warning Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb_con.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index b271b0557a1f..411e605f448a 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -1187,9 +1187,9 @@ sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, * And so is the hi_font_mask. */ for (i = 0; i < MAX_NR_CONSOLES; i++) { - struct vc_data *c = vc_cons[i].d; - if (c && c->vc_sw == &sisusb_con) - c->vc_hi_font_mask = ch512 ? 0x0800 : 0; + struct vc_data *d = vc_cons[i].d; + if (d && d->vc_sw == &sisusb_con) + d->vc_hi_font_mask = ch512 ? 0x0800 : 0; } sisusb->current_font_512 = ch512; @@ -1249,7 +1249,7 @@ sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, mutex_unlock(&sisusb->lock); if (dorecalc && c) { - int i, rows = c->vc_scan_lines / fh; + int rows = c->vc_scan_lines / fh; /* Now adjust our consoles' size */ -- cgit v1.2.3-58-ga151 From 6641445c3e05460c5164ab15a17fc4ee481ca213 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Thu, 29 Apr 2010 10:04:56 -0400 Subject: usb: u132-hcd.c: fix shadows sparse warning Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/u132-hcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index fbd7adafd61c..11a97d93dff2 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -1446,7 +1446,7 @@ static void u132_hcd_endp_work_scheduler(struct work_struct *work) return; } else { int retval; - u8 address = u132->addr[endp->usb_addr].address; + address = u132->addr[endp->usb_addr].address; struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]; endp->active = 1; @@ -3120,8 +3120,8 @@ static int __devinit u132_probe(struct platform_device *pdev) ftdi_elan_gone_away(pdev); return -ENOMEM; } else { - int retval = 0; struct u132 *u132 = hcd_to_u132(hcd); + retval = 0; hcd->rsrc_start = 0; mutex_lock(&u132_module_lock); list_add_tail(&u132->u132_list, &u132_static_list); -- cgit v1.2.3-58-ga151 From fe54b058de9d1df5fef9e2a559651f4b7c9f04b1 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Fri, 30 Apr 2010 13:11:29 -0600 Subject: USB: Add a usb_pipe_endpoint() convenience function Converting a pipe number to a struct usb_host_endpoint pointer is a little messy. Introduce a new convenience function to hide the mess. Signed-off-by: Matthew Wilcox Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 3 +-- drivers/usb/core/urb.c | 3 +-- include/linux/usb.h | 8 ++++++++ 3 files changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 79d1cdf4a635..d8329eb47d4f 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -226,8 +226,7 @@ int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe, struct urb *urb; struct usb_host_endpoint *ep; - ep = (usb_pipein(pipe) ? usb_dev->ep_in : usb_dev->ep_out) - [usb_pipeendpoint(pipe)]; + ep = usb_pipe_endpoint(usb_dev, pipe); if (!ep || len < 0) return -EINVAL; diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index a760e46871c5..7c0555548ac8 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -308,8 +308,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) * will be required to set urb->ep directly and we will eliminate * urb->pipe. */ - ep = (usb_pipein(urb->pipe) ? dev->ep_in : dev->ep_out) - [usb_pipeendpoint(urb->pipe)]; + ep = usb_pipe_endpoint(dev, urb->pipe); if (!ep) return -ENOENT; diff --git a/include/linux/usb.h b/include/linux/usb.h index 1eb4762d9ea8..fd7d61e58198 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1552,6 +1552,14 @@ static inline unsigned int __create_pipe(struct usb_device *dev, #define usb_rcvintpipe(dev,endpoint) \ ((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN) +static inline struct usb_host_endpoint * +usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe) +{ + struct usb_host_endpoint **eps; + eps = usb_pipein(pipe) ? dev->ep_in : dev->ep_out; + return eps[usb_pipeendpoint(pipe)]; +} + /*-------------------------------------------------------------------------*/ static inline __u16 -- cgit v1.2.3-58-ga151 From 910f8d0cede74beff1eee93cf9cf2a28d7600e66 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Sat, 1 May 2010 12:20:01 -0600 Subject: USB: Change the scatterlist type in struct urb Change the type of the URB's 'sg' pointer from a usb_sg_request to a scatterlist. This allows drivers to submit scatter-gather lists without using the usb_sg_wait() interface. It has the added benefit of removing the typecasts that were added as part of patch as1368 (and slightly decreasing the number of pointer dereferences). Signed-off-by: Matthew Wilcox Reviewed-by: Alan Stern Tested-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 8 +++----- drivers/usb/core/message.c | 4 ++-- drivers/usb/host/ehci-q.c | 2 +- drivers/usb/host/whci/qset.c | 4 ++-- drivers/usb/host/xhci-ring.c | 4 ++-- drivers/usb/mon/mon_bin.c | 2 +- drivers/usb/mon/mon_text.c | 2 +- include/linux/usb.h | 2 +- 8 files changed, 13 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 0abc5c537f39..297c92e4bf8d 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1278,7 +1278,7 @@ static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (urb->transfer_flags & URB_DMA_MAP_SG) dma_unmap_sg(hcd->self.controller, - urb->sg->sg, + urb->sg, urb->num_sgs, dir); else if (urb->transfer_flags & URB_DMA_MAP_PAGE) @@ -1346,7 +1346,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, if (urb->num_sgs) { int n = dma_map_sg( hcd->self.controller, - urb->sg->sg, + urb->sg, urb->num_sgs, dir); if (n <= 0) @@ -1359,9 +1359,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, URB_DMA_SG_COMBINED; } } else if (urb->sg) { - struct scatterlist *sg; - - sg = (struct scatterlist *) urb->sg; + struct scatterlist *sg = urb->sg; urb->transfer_dma = dma_map_page( hcd->self.controller, sg_page(sg), diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index d8329eb47d4f..63919b8abee1 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -413,7 +413,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, sg->length; } } - io->urbs[0]->sg = io; + io->urbs[0]->sg = sg; io->urbs[0]->num_sgs = io->entries; io->entries = 1; } else { @@ -454,7 +454,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, } io->urbs[i]->transfer_buffer_length = len; - io->urbs[i]->sg = (struct usb_sg_request *) sg; + io->urbs[i]->sg = sg; } io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; } diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 89521775c567..11a79c4f4a9d 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -663,7 +663,7 @@ qh_urb_transaction ( */ i = urb->num_sgs; if (len > 0 && i > 0) { - sg = urb->sg->sg; + sg = urb->sg; buf = sg_dma_address(sg); /* urb->transfer_buffer_length may be smaller than the diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c index b388dd1fb4c4..ab5a14fbfeeb 100644 --- a/drivers/usb/host/whci/qset.c +++ b/drivers/usb/host/whci/qset.c @@ -443,7 +443,7 @@ static int qset_add_urb_sg(struct whc *whc, struct whc_qset *qset, struct urb *u remaining = urb->transfer_buffer_length; - for_each_sg(urb->sg->sg, sg, urb->num_sgs, i) { + for_each_sg(urb->sg, sg, urb->num_sgs, i) { dma_addr_t dma_addr; size_t dma_remaining; dma_addr_t sp, ep; @@ -561,7 +561,7 @@ static int qset_add_urb_sg_linearize(struct whc *whc, struct whc_qset *qset, remaining = urb->transfer_buffer_length; - for_each_sg(urb->sg->sg, sg, urb->sg->nents, i) { + for_each_sg(urb->sg, sg, urb->num_sgs, i) { size_t len; size_t sg_remaining; void *orig; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 9e27eb0c7004..a67caef265b1 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1788,7 +1788,7 @@ static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) xhci_dbg(xhci, "count sg list trbs: \n"); num_trbs = 0; - for_each_sg(urb->sg->sg, sg, num_sgs, i) { + for_each_sg(urb->sg, sg, num_sgs, i) { unsigned int previous_total_trbs = num_trbs; unsigned int len = sg_dma_len(sg); @@ -1951,7 +1951,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, * the amount of memory allocated for this scatter-gather list. * 3. TRBs buffers can't cross 64KB boundaries. */ - sg = urb->sg->sg; + sg = urb->sg; addr = (u64) sg_dma_address(sg); this_sg_len = sg_dma_len(sg); trb_buff_len = TRB_MAX_BUFF_SIZE - diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 8a7968df278f..e7fa3644ba6a 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -422,7 +422,7 @@ static unsigned int mon_bin_get_data(const struct mon_reader_bin *rp, } /* Copy up to the first non-addressable segment */ - for_each_sg(urb->sg->sg, sg, urb->num_sgs, i) { + for_each_sg(urb->sg, sg, urb->num_sgs, i) { if (length == 0 || PageHighMem(sg_page(sg))) break; this_len = min_t(unsigned int, sg->length, length); diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index d56260280f54..a545d65f6e57 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -159,7 +159,7 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, if (src == NULL) return 'Z'; /* '0' would be not as pretty. */ } else { - struct scatterlist *sg = urb->sg->sg; + struct scatterlist *sg = urb->sg; if (PageHighMem(sg_page(sg))) return 'D'; diff --git a/include/linux/usb.h b/include/linux/usb.h index cf3b289a87a2..eec9e74f332f 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1195,7 +1195,7 @@ struct urb { unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/ void *transfer_buffer; /* (in) associated data buffer */ dma_addr_t transfer_dma; /* (in) dma addr for transfer_buffer */ - struct usb_sg_request *sg; /* (in) scatter gather buffer list */ + struct scatterlist *sg; /* (in) scatter gather buffer list */ int num_sgs; /* (in) number of entries in the sg list */ u32 transfer_buffer_length; /* (in) data buffer length */ u32 actual_length; /* (return) actual transfer length */ -- cgit v1.2.3-58-ga151 From cdda479f15cd13fa50a913ca85129c0437cc7b91 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 2 May 2010 20:57:41 +0200 Subject: USB gadget: video class function driver This USB video class function driver implements a video capture device from the host's point of view. It creates a V4L2 output device on the gadget's side to transfer data from a userspace application over USB. The UVC-specific descriptors are passed by the gadget driver to the UVC function driver, making them completely configurable without any modification to the function's driver code. Signed-off-by: Laurent Pinchart Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_uvc.c | 661 +++++++++++++++++++++++++++++++++++++++++ drivers/usb/gadget/f_uvc.h | 376 +++++++++++++++++++++++ drivers/usb/gadget/uvc.h | 241 +++++++++++++++ drivers/usb/gadget/uvc_queue.c | 583 ++++++++++++++++++++++++++++++++++++ drivers/usb/gadget/uvc_queue.h | 89 ++++++ drivers/usb/gadget/uvc_v4l2.c | 374 +++++++++++++++++++++++ drivers/usb/gadget/uvc_video.c | 386 ++++++++++++++++++++++++ 7 files changed, 2710 insertions(+) create mode 100644 drivers/usb/gadget/f_uvc.c create mode 100644 drivers/usb/gadget/f_uvc.h create mode 100644 drivers/usb/gadget/uvc.h create mode 100644 drivers/usb/gadget/uvc_queue.c create mode 100644 drivers/usb/gadget/uvc_queue.h create mode 100644 drivers/usb/gadget/uvc_v4l2.c create mode 100644 drivers/usb/gadget/uvc_video.c (limited to 'drivers') diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c new file mode 100644 index 000000000000..fc2611f8b326 --- /dev/null +++ b/drivers/usb/gadget/f_uvc.c @@ -0,0 +1,661 @@ +/* + * uvc_gadget.c -- USB Video Class Gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "uvc.h" + +unsigned int uvc_trace_param; + +/* -------------------------------------------------------------------------- + * Function descriptors + */ + +/* string IDs are assigned dynamically */ + +#define UVC_STRING_ASSOCIATION_IDX 0 +#define UVC_STRING_CONTROL_IDX 1 +#define UVC_STRING_STREAMING_IDX 2 + +static struct usb_string uvc_en_us_strings[] = { + [UVC_STRING_ASSOCIATION_IDX].s = "UVC Camera", + [UVC_STRING_CONTROL_IDX].s = "Video Control", + [UVC_STRING_STREAMING_IDX].s = "Video Streaming", + { } +}; + +static struct usb_gadget_strings uvc_stringtab = { + .language = 0x0409, /* en-us */ + .strings = uvc_en_us_strings, +}; + +static struct usb_gadget_strings *uvc_function_strings[] = { + &uvc_stringtab, + NULL, +}; + +#define UVC_INTF_VIDEO_CONTROL 0 +#define UVC_INTF_VIDEO_STREAMING 1 + +static struct usb_interface_assoc_descriptor uvc_iad __initdata = { + .bLength = USB_DT_INTERFACE_ASSOCIATION_SIZE, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + .bFirstInterface = 0, + .bInterfaceCount = 2, + .bFunctionClass = USB_CLASS_VIDEO, + .bFunctionSubClass = 0x03, + .bFunctionProtocol = 0x00, + .iFunction = 0, +}; + +static struct usb_interface_descriptor uvc_control_intf __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = UVC_INTF_VIDEO_CONTROL, + .bAlternateSetting = 0, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 0x01, + .bInterfaceProtocol = 0x00, + .iInterface = 0, +}; + +static struct usb_endpoint_descriptor uvc_control_ep __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(16), + .bInterval = 8, +}; + +static struct uvc_control_endpoint_descriptor uvc_control_cs_ep __initdata = { + .bLength = UVC_DT_CONTROL_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubType = UVC_EP_INTERRUPT, + .wMaxTransferSize = cpu_to_le16(16), +}; + +static struct usb_interface_descriptor uvc_streaming_intf_alt0 __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = UVC_INTF_VIDEO_STREAMING, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 0x02, + .bInterfaceProtocol = 0x00, + .iInterface = 0, +}; + +static struct usb_interface_descriptor uvc_streaming_intf_alt1 __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = UVC_INTF_VIDEO_STREAMING, + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 0x02, + .bInterfaceProtocol = 0x00, + .iInterface = 0, +}; + +static struct usb_endpoint_descriptor uvc_streaming_ep = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(512), + .bInterval = 1, +}; + +static const struct usb_descriptor_header * const uvc_fs_streaming[] = { + (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, + (struct usb_descriptor_header *) &uvc_streaming_ep, + NULL, +}; + +static const struct usb_descriptor_header * const uvc_hs_streaming[] = { + (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, + (struct usb_descriptor_header *) &uvc_streaming_ep, + NULL, +}; + +/* -------------------------------------------------------------------------- + * Control requests + */ + +static void +uvc_function_ep0_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct uvc_device *uvc = req->context; + struct v4l2_event v4l2_event; + struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; + + if (uvc->event_setup_out) { + uvc->event_setup_out = 0; + + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_DATA; + uvc_event->data.length = req->actual; + memcpy(&uvc_event->data.data, req->buf, req->actual); + v4l2_event_queue(uvc->vdev, &v4l2_event); + } +} + +static int +uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct uvc_device *uvc = to_uvc(f); + struct v4l2_event v4l2_event; + struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; + + /* printk(KERN_INFO "setup request %02x %02x value %04x index %04x %04x\n", + * ctrl->bRequestType, ctrl->bRequest, le16_to_cpu(ctrl->wValue), + * le16_to_cpu(ctrl->wIndex), le16_to_cpu(ctrl->wLength)); + */ + + if ((ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) { + INFO(f->config->cdev, "invalid request type\n"); + return -EINVAL; + } + + /* Stall too big requests. */ + if (le16_to_cpu(ctrl->wLength) > UVC_MAX_REQUEST_SIZE) + return -EINVAL; + + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_SETUP; + memcpy(&uvc_event->req, ctrl, sizeof(uvc_event->req)); + v4l2_event_queue(uvc->vdev, &v4l2_event); + + return 0; +} + +static int +uvc_function_get_alt(struct usb_function *f, unsigned interface) +{ + struct uvc_device *uvc = to_uvc(f); + + INFO(f->config->cdev, "uvc_function_get_alt(%u)\n", interface); + + if (interface == uvc->control_intf) + return 0; + else if (interface != uvc->streaming_intf) + return -EINVAL; + else + return uvc->state == UVC_STATE_STREAMING ? 1 : 0; +} + +static int +uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) +{ + struct uvc_device *uvc = to_uvc(f); + struct v4l2_event v4l2_event; + struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; + + INFO(f->config->cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt); + + if (interface == uvc->control_intf) { + if (alt) + return -EINVAL; + + if (uvc->state == UVC_STATE_DISCONNECTED) { + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_CONNECT; + uvc_event->speed = f->config->cdev->gadget->speed; + v4l2_event_queue(uvc->vdev, &v4l2_event); + + uvc->state = UVC_STATE_CONNECTED; + } + + return 0; + } + + if (interface != uvc->streaming_intf) + return -EINVAL; + + /* TODO + if (usb_endpoint_xfer_bulk(&uvc->desc.vs_ep)) + return alt ? -EINVAL : 0; + */ + + switch (alt) { + case 0: + if (uvc->state != UVC_STATE_STREAMING) + return 0; + + if (uvc->video.ep) + usb_ep_disable(uvc->video.ep); + + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_STREAMOFF; + v4l2_event_queue(uvc->vdev, &v4l2_event); + + uvc->state = UVC_STATE_CONNECTED; + break; + + case 1: + if (uvc->state != UVC_STATE_CONNECTED) + return 0; + + if (uvc->video.ep) + usb_ep_enable(uvc->video.ep, &uvc_streaming_ep); + + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_STREAMON; + v4l2_event_queue(uvc->vdev, &v4l2_event); + + uvc->state = UVC_STATE_STREAMING; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static void +uvc_function_disable(struct usb_function *f) +{ + struct uvc_device *uvc = to_uvc(f); + struct v4l2_event v4l2_event; + + INFO(f->config->cdev, "uvc_function_disable\n"); + + memset(&v4l2_event, 0, sizeof(v4l2_event)); + v4l2_event.type = UVC_EVENT_DISCONNECT; + v4l2_event_queue(uvc->vdev, &v4l2_event); + + uvc->state = UVC_STATE_DISCONNECTED; +} + +/* -------------------------------------------------------------------------- + * Connection / disconnection + */ + +void +uvc_function_connect(struct uvc_device *uvc) +{ + struct usb_composite_dev *cdev = uvc->func.config->cdev; + int ret; + + if ((ret = usb_function_activate(&uvc->func)) < 0) + INFO(cdev, "UVC connect failed with %d\n", ret); +} + +void +uvc_function_disconnect(struct uvc_device *uvc) +{ + struct usb_composite_dev *cdev = uvc->func.config->cdev; + int ret; + + if ((ret = usb_function_deactivate(&uvc->func)) < 0) + INFO(cdev, "UVC disconnect failed with %d\n", ret); +} + +/* -------------------------------------------------------------------------- + * USB probe and disconnect + */ + +static int +uvc_register_video(struct uvc_device *uvc) +{ + struct usb_composite_dev *cdev = uvc->func.config->cdev; + struct video_device *video; + + /* TODO reference counting. */ + video = video_device_alloc(); + if (video == NULL) + return -ENOMEM; + + video->parent = &cdev->gadget->dev; + video->minor = -1; + video->fops = &uvc_v4l2_fops; + video->release = video_device_release; + strncpy(video->name, cdev->gadget->name, sizeof(video->name)); + + uvc->vdev = video; + video_set_drvdata(video, uvc); + + return video_register_device(video, VFL_TYPE_GRABBER, -1); +} + +#define UVC_COPY_DESCRIPTOR(mem, dst, desc) \ + do { \ + memcpy(mem, desc, (desc)->bLength); \ + *(dst)++ = mem; \ + mem += (desc)->bLength; \ + } while (0); + +#define UVC_COPY_DESCRIPTORS(mem, dst, src) \ + do { \ + const struct usb_descriptor_header * const *__src; \ + for (__src = src; *__src; ++__src) { \ + memcpy(mem, *__src, (*__src)->bLength); \ + *dst++ = mem; \ + mem += (*__src)->bLength; \ + } \ + } while (0) + +static struct usb_descriptor_header ** __init +uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) +{ + struct uvc_input_header_descriptor *uvc_streaming_header; + struct uvc_header_descriptor *uvc_control_header; + const struct uvc_descriptor_header * const *uvc_streaming_cls; + const struct usb_descriptor_header * const *uvc_streaming_std; + const struct usb_descriptor_header * const *src; + struct usb_descriptor_header **dst; + struct usb_descriptor_header **hdr; + unsigned int control_size; + unsigned int streaming_size; + unsigned int n_desc; + unsigned int bytes; + void *mem; + + uvc_streaming_cls = (speed == USB_SPEED_FULL) + ? uvc->desc.fs_streaming : uvc->desc.hs_streaming; + uvc_streaming_std = (speed == USB_SPEED_FULL) + ? uvc_fs_streaming : uvc_hs_streaming; + + /* Descriptors layout + * + * uvc_iad + * uvc_control_intf + * Class-specific UVC control descriptors + * uvc_control_ep + * uvc_control_cs_ep + * uvc_streaming_intf_alt0 + * Class-specific UVC streaming descriptors + * uvc_{fs|hs}_streaming + */ + + /* Count descriptors and compute their size. */ + control_size = 0; + streaming_size = 0; + bytes = uvc_iad.bLength + uvc_control_intf.bLength + + uvc_control_ep.bLength + uvc_control_cs_ep.bLength + + uvc_streaming_intf_alt0.bLength; + n_desc = 5; + + for (src = (const struct usb_descriptor_header**)uvc->desc.control; *src; ++src) { + control_size += (*src)->bLength; + bytes += (*src)->bLength; + n_desc++; + } + for (src = (const struct usb_descriptor_header**)uvc_streaming_cls; *src; ++src) { + streaming_size += (*src)->bLength; + bytes += (*src)->bLength; + n_desc++; + } + for (src = uvc_streaming_std; *src; ++src) { + bytes += (*src)->bLength; + n_desc++; + } + + mem = kmalloc((n_desc + 1) * sizeof(*src) + bytes, GFP_KERNEL); + if (mem == NULL) + return NULL; + + hdr = mem; + dst = mem; + mem += (n_desc + 1) * sizeof(*src); + + /* Copy the descriptors. */ + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_iad); + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_intf); + + uvc_control_header = mem; + UVC_COPY_DESCRIPTORS(mem, dst, + (const struct usb_descriptor_header**)uvc->desc.control); + uvc_control_header->wTotalLength = cpu_to_le16(control_size); + uvc_control_header->bInCollection = 1; + uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf; + + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep); + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_cs_ep); + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_streaming_intf_alt0); + + uvc_streaming_header = mem; + UVC_COPY_DESCRIPTORS(mem, dst, + (const struct usb_descriptor_header**)uvc_streaming_cls); + uvc_streaming_header->wTotalLength = cpu_to_le16(streaming_size); + uvc_streaming_header->bEndpointAddress = uvc_streaming_ep.bEndpointAddress; + + UVC_COPY_DESCRIPTORS(mem, dst, uvc_streaming_std); + + *dst = NULL; + return hdr; +} + +static void +uvc_function_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct uvc_device *uvc = to_uvc(f); + + INFO(cdev, "uvc_function_unbind\n"); + + if (uvc->vdev) { + if (uvc->vdev->minor == -1) + video_device_release(uvc->vdev); + else + video_unregister_device(uvc->vdev); + uvc->vdev = NULL; + } + + if (uvc->control_ep) + uvc->control_ep->driver_data = NULL; + if (uvc->video.ep) + uvc->video.ep->driver_data = NULL; + + if (uvc->control_req) { + usb_ep_free_request(cdev->gadget->ep0, uvc->control_req); + kfree(uvc->control_buf); + } + + kfree(f->descriptors); + kfree(f->hs_descriptors); + + kfree(uvc); +} + +static int __init +uvc_function_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct uvc_device *uvc = to_uvc(f); + struct usb_ep *ep; + int ret = -EINVAL; + + INFO(cdev, "uvc_function_bind\n"); + + /* Allocate endpoints. */ + ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep); + if (!ep) { + INFO(cdev, "Unable to allocate control EP\n"); + goto error; + } + uvc->control_ep = ep; + ep->driver_data = uvc; + + ep = usb_ep_autoconfig(cdev->gadget, &uvc_streaming_ep); + if (!ep) { + INFO(cdev, "Unable to allocate streaming EP\n"); + goto error; + } + uvc->video.ep = ep; + ep->driver_data = uvc; + + /* Allocate interface IDs. */ + if ((ret = usb_interface_id(c, f)) < 0) + goto error; + uvc_iad.bFirstInterface = ret; + uvc_control_intf.bInterfaceNumber = ret; + uvc->control_intf = ret; + + if ((ret = usb_interface_id(c, f)) < 0) + goto error; + uvc_streaming_intf_alt0.bInterfaceNumber = ret; + uvc_streaming_intf_alt1.bInterfaceNumber = ret; + uvc->streaming_intf = ret; + + /* Copy descriptors. */ + f->descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL); + f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + + /* Preallocate control endpoint request. */ + uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL); + uvc->control_buf = kmalloc(UVC_MAX_REQUEST_SIZE, GFP_KERNEL); + if (uvc->control_req == NULL || uvc->control_buf == NULL) { + ret = -ENOMEM; + goto error; + } + + uvc->control_req->buf = uvc->control_buf; + uvc->control_req->complete = uvc_function_ep0_complete; + uvc->control_req->context = uvc; + + /* Avoid letting this gadget enumerate until the userspace server is + * active. + */ + if ((ret = usb_function_deactivate(f)) < 0) + goto error; + + /* Initialise video. */ + ret = uvc_video_init(&uvc->video); + if (ret < 0) + goto error; + + /* Register a V4L2 device. */ + ret = uvc_register_video(uvc); + if (ret < 0) { + printk(KERN_INFO "Unable to register video device\n"); + goto error; + } + + return 0; + +error: + uvc_function_unbind(c, f); + return ret; +} + +/* -------------------------------------------------------------------------- + * USB gadget function + */ + +/** + * uvc_bind_config - add a UVC function to a configuration + * @c: the configuration to support the UVC instance + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @uvc_setup(). Caller is also responsible for + * calling @uvc_cleanup() before module unload. + */ +int __init +uvc_bind_config(struct usb_configuration *c, + const struct uvc_descriptor_header * const *control, + const struct uvc_descriptor_header * const *fs_streaming, + const struct uvc_descriptor_header * const *hs_streaming) +{ + struct uvc_device *uvc; + int ret = 0; + + /* TODO Check if the USB device controller supports the required + * features. + */ + if (!gadget_is_dualspeed(c->cdev->gadget)) + return -EINVAL; + + uvc = kzalloc(sizeof(*uvc), GFP_KERNEL); + if (uvc == NULL) + return -ENOMEM; + + uvc->state = UVC_STATE_DISCONNECTED; + + /* Validate the descriptors. */ + if (control == NULL || control[0] == NULL || + control[0]->bDescriptorSubType != UVC_DT_HEADER) + goto error; + + if (fs_streaming == NULL || fs_streaming[0] == NULL || + fs_streaming[0]->bDescriptorSubType != UVC_DT_INPUT_HEADER) + goto error; + + if (hs_streaming == NULL || hs_streaming[0] == NULL || + hs_streaming[0]->bDescriptorSubType != UVC_DT_INPUT_HEADER) + goto error; + + uvc->desc.control = control; + uvc->desc.fs_streaming = fs_streaming; + uvc->desc.hs_streaming = hs_streaming; + + /* Allocate string descriptor numbers. */ + if ((ret = usb_string_id(c->cdev)) < 0) + goto error; + uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret; + uvc_iad.iFunction = ret; + + if ((ret = usb_string_id(c->cdev)) < 0) + goto error; + uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret; + uvc_control_intf.iInterface = ret; + + if ((ret = usb_string_id(c->cdev)) < 0) + goto error; + uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret; + uvc_streaming_intf_alt0.iInterface = ret; + uvc_streaming_intf_alt1.iInterface = ret; + + /* Register the function. */ + uvc->func.name = "uvc"; + uvc->func.strings = uvc_function_strings; + uvc->func.bind = uvc_function_bind; + uvc->func.unbind = uvc_function_unbind; + uvc->func.get_alt = uvc_function_get_alt; + uvc->func.set_alt = uvc_function_set_alt; + uvc->func.disable = uvc_function_disable; + uvc->func.setup = uvc_function_setup; + + ret = usb_add_function(c, &uvc->func); + if (ret) + kfree(uvc); + + return 0; + +error: + kfree(uvc); + return ret; +} + +module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(trace, "Trace level bitmask"); + diff --git a/drivers/usb/gadget/f_uvc.h b/drivers/usb/gadget/f_uvc.h new file mode 100644 index 000000000000..8a5db7c4fe7c --- /dev/null +++ b/drivers/usb/gadget/f_uvc.h @@ -0,0 +1,376 @@ +/* + * f_uvc.h -- USB Video Class Gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#ifndef _F_UVC_H_ +#define _F_UVC_H_ + +#include + +#define USB_CLASS_VIDEO_CONTROL 1 +#define USB_CLASS_VIDEO_STREAMING 2 + +struct uvc_descriptor_header { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; +} __attribute__ ((packed)); + +struct uvc_header_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u16 bcdUVC; + __u16 wTotalLength; + __u32 dwClockFrequency; + __u8 bInCollection; + __u8 baInterfaceNr[]; +} __attribute__((__packed__)); + +#define UVC_HEADER_DESCRIPTOR(n) uvc_header_descriptor_##n + +#define DECLARE_UVC_HEADER_DESCRIPTOR(n) \ +struct UVC_HEADER_DESCRIPTOR(n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u16 bcdUVC; \ + __u16 wTotalLength; \ + __u32 dwClockFrequency; \ + __u8 bInCollection; \ + __u8 baInterfaceNr[n]; \ +} __attribute__ ((packed)) + +struct uvc_input_terminal_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bTerminalID; + __u16 wTerminalType; + __u8 bAssocTerminal; + __u8 iTerminal; +} __attribute__((__packed__)); + +struct uvc_output_terminal_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bTerminalID; + __u16 wTerminalType; + __u8 bAssocTerminal; + __u8 bSourceID; + __u8 iTerminal; +} __attribute__((__packed__)); + +struct uvc_camera_terminal_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bTerminalID; + __u16 wTerminalType; + __u8 bAssocTerminal; + __u8 iTerminal; + __u16 wObjectiveFocalLengthMin; + __u16 wObjectiveFocalLengthMax; + __u16 wOcularFocalLength; + __u8 bControlSize; + __u8 bmControls[3]; +} __attribute__((__packed__)); + +struct uvc_selector_unit_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bUnitID; + __u8 bNrInPins; + __u8 baSourceID[0]; + __u8 iSelector; +} __attribute__((__packed__)); + +#define UVC_SELECTOR_UNIT_DESCRIPTOR(n) \ + uvc_selector_unit_descriptor_##n + +#define DECLARE_UVC_SELECTOR_UNIT_DESCRIPTOR(n) \ +struct UVC_SELECTOR_UNIT_DESCRIPTOR(n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bUnitID; \ + __u8 bNrInPins; \ + __u8 baSourceID[n]; \ + __u8 iSelector; \ +} __attribute__ ((packed)) + +struct uvc_processing_unit_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bUnitID; + __u8 bSourceID; + __u16 wMaxMultiplier; + __u8 bControlSize; + __u8 bmControls[2]; + __u8 iProcessing; +} __attribute__((__packed__)); + +struct uvc_extension_unit_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bUnitID; + __u8 guidExtensionCode[16]; + __u8 bNumControls; + __u8 bNrInPins; + __u8 baSourceID[0]; + __u8 bControlSize; + __u8 bmControls[0]; + __u8 iExtension; +} __attribute__((__packed__)); + +#define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ + uvc_extension_unit_descriptor_##p_##n + +#define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ +struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bUnitID; \ + __u8 guidExtensionCode[16]; \ + __u8 bNumControls; \ + __u8 bNrInPins; \ + __u8 baSourceID[p]; \ + __u8 bControlSize; \ + __u8 bmControls[n]; \ + __u8 iExtension; \ +} __attribute__ ((packed)) + +struct uvc_control_endpoint_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u16 wMaxTransferSize; +} __attribute__((__packed__)); + +#define UVC_DT_HEADER 1 +#define UVC_DT_INPUT_TERMINAL 2 +#define UVC_DT_OUTPUT_TERMINAL 3 +#define UVC_DT_SELECTOR_UNIT 4 +#define UVC_DT_PROCESSING_UNIT 5 +#define UVC_DT_EXTENSION_UNIT 6 + +#define UVC_DT_HEADER_SIZE(n) (12+(n)) +#define UVC_DT_INPUT_TERMINAL_SIZE 8 +#define UVC_DT_OUTPUT_TERMINAL_SIZE 9 +#define UVC_DT_CAMERA_TERMINAL_SIZE(n) (15+(n)) +#define UVC_DT_SELECTOR_UNIT_SIZE(n) (6+(n)) +#define UVC_DT_PROCESSING_UNIT_SIZE(n) (9+(n)) +#define UVC_DT_EXTENSION_UNIT_SIZE(p,n) (24+(p)+(n)) +#define UVC_DT_CONTROL_ENDPOINT_SIZE 5 + +struct uvc_input_header_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bNumFormats; + __u16 wTotalLength; + __u8 bEndpointAddress; + __u8 bmInfo; + __u8 bTerminalLink; + __u8 bStillCaptureMethod; + __u8 bTriggerSupport; + __u8 bTriggerUsage; + __u8 bControlSize; + __u8 bmaControls[]; +} __attribute__((__packed__)); + +#define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ + uvc_input_header_descriptor_##n_##p + +#define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ +struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bNumFormats; \ + __u16 wTotalLength; \ + __u8 bEndpointAddress; \ + __u8 bmInfo; \ + __u8 bTerminalLink; \ + __u8 bStillCaptureMethod; \ + __u8 bTriggerSupport; \ + __u8 bTriggerUsage; \ + __u8 bControlSize; \ + __u8 bmaControls[p][n]; \ +} __attribute__ ((packed)) + +struct uvc_output_header_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bNumFormats; + __u16 wTotalLength; + __u8 bEndpointAddress; + __u8 bTerminalLink; + __u8 bControlSize; + __u8 bmaControls[]; +} __attribute__((__packed__)); + +#define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ + uvc_output_header_descriptor_##n_##p + +#define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ +struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bNumFormats; \ + __u16 wTotalLength; \ + __u8 bEndpointAddress; \ + __u8 bTerminalLink; \ + __u8 bControlSize; \ + __u8 bmaControls[p][n]; \ +} __attribute__ ((packed)) + +struct uvc_format_uncompressed { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFormatIndex; + __u8 bNumFrameDescriptors; + __u8 guidFormat[16]; + __u8 bBitsPerPixel; + __u8 bDefaultFrameIndex; + __u8 bAspectRatioX; + __u8 bAspectRatioY; + __u8 bmInterfaceFlags; + __u8 bCopyProtect; +} __attribute__((__packed__)); + +struct uvc_frame_uncompressed { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFrameIndex; + __u8 bmCapabilities; + __u16 wWidth; + __u16 wHeight; + __u32 dwMinBitRate; + __u32 dwMaxBitRate; + __u32 dwMaxVideoFrameBufferSize; + __u32 dwDefaultFrameInterval; + __u8 bFrameIntervalType; + __u32 dwFrameInterval[]; +} __attribute__((__packed__)); + +#define UVC_FRAME_UNCOMPRESSED(n) \ + uvc_frame_uncompressed_##n + +#define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \ +struct UVC_FRAME_UNCOMPRESSED(n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bFrameIndex; \ + __u8 bmCapabilities; \ + __u16 wWidth; \ + __u16 wHeight; \ + __u32 dwMinBitRate; \ + __u32 dwMaxBitRate; \ + __u32 dwMaxVideoFrameBufferSize; \ + __u32 dwDefaultFrameInterval; \ + __u8 bFrameIntervalType; \ + __u32 dwFrameInterval[n]; \ +} __attribute__ ((packed)) + +struct uvc_format_mjpeg { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFormatIndex; + __u8 bNumFrameDescriptors; + __u8 bmFlags; + __u8 bDefaultFrameIndex; + __u8 bAspectRatioX; + __u8 bAspectRatioY; + __u8 bmInterfaceFlags; + __u8 bCopyProtect; +} __attribute__((__packed__)); + +struct uvc_frame_mjpeg { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFrameIndex; + __u8 bmCapabilities; + __u16 wWidth; + __u16 wHeight; + __u32 dwMinBitRate; + __u32 dwMaxBitRate; + __u32 dwMaxVideoFrameBufferSize; + __u32 dwDefaultFrameInterval; + __u8 bFrameIntervalType; + __u32 dwFrameInterval[]; +} __attribute__((__packed__)); + +#define UVC_FRAME_MJPEG(n) \ + uvc_frame_mjpeg_##n + +#define DECLARE_UVC_FRAME_MJPEG(n) \ +struct UVC_FRAME_MJPEG(n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bFrameIndex; \ + __u8 bmCapabilities; \ + __u16 wWidth; \ + __u16 wHeight; \ + __u32 dwMinBitRate; \ + __u32 dwMaxBitRate; \ + __u32 dwMaxVideoFrameBufferSize; \ + __u32 dwDefaultFrameInterval; \ + __u8 bFrameIntervalType; \ + __u32 dwFrameInterval[n]; \ +} __attribute__ ((packed)) + +struct uvc_color_matching_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bColorPrimaries; + __u8 bTransferCharacteristics; + __u8 bMatrixCoefficients; +} __attribute__((__packed__)); + +#define UVC_DT_INPUT_HEADER 1 +#define UVC_DT_OUTPUT_HEADER 2 +#define UVC_DT_FORMAT_UNCOMPRESSED 4 +#define UVC_DT_FRAME_UNCOMPRESSED 5 +#define UVC_DT_FORMAT_MJPEG 6 +#define UVC_DT_FRAME_MJPEG 7 +#define UVC_DT_COLOR_MATCHING 13 + +#define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p)) +#define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p)) +#define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27 +#define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n)) +#define UVC_DT_FORMAT_MJPEG_SIZE 11 +#define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n)) +#define UVC_DT_COLOR_MATCHING_SIZE 6 + +extern int uvc_bind_config(struct usb_configuration *c, + const struct uvc_descriptor_header * const *control, + const struct uvc_descriptor_header * const *fs_streaming, + const struct uvc_descriptor_header * const *hs_streaming); + +#endif /* _F_UVC_H_ */ + diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h new file mode 100644 index 000000000000..0a705e63c936 --- /dev/null +++ b/drivers/usb/gadget/uvc.h @@ -0,0 +1,241 @@ +/* + * uvc_gadget.h -- USB Video Class Gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#ifndef _UVC_GADGET_H_ +#define _UVC_GADGET_H_ + +#include +#include +#include + +#define UVC_EVENT_FIRST (V4L2_EVENT_PRIVATE_START + 0) +#define UVC_EVENT_CONNECT (V4L2_EVENT_PRIVATE_START + 0) +#define UVC_EVENT_DISCONNECT (V4L2_EVENT_PRIVATE_START + 1) +#define UVC_EVENT_STREAMON (V4L2_EVENT_PRIVATE_START + 2) +#define UVC_EVENT_STREAMOFF (V4L2_EVENT_PRIVATE_START + 3) +#define UVC_EVENT_SETUP (V4L2_EVENT_PRIVATE_START + 4) +#define UVC_EVENT_DATA (V4L2_EVENT_PRIVATE_START + 5) +#define UVC_EVENT_LAST (V4L2_EVENT_PRIVATE_START + 5) + +struct uvc_request_data +{ + unsigned int length; + __u8 data[60]; +}; + +struct uvc_event +{ + union { + enum usb_device_speed speed; + struct usb_ctrlrequest req; + struct uvc_request_data data; + }; +}; + +#define UVCIOC_SEND_RESPONSE _IOW('U', 1, struct uvc_request_data) + +#define UVC_INTF_CONTROL 0 +#define UVC_INTF_STREAMING 1 + +/* ------------------------------------------------------------------------ + * UVC constants & structures + */ + +/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */ +#define UVC_STREAM_EOH (1 << 7) +#define UVC_STREAM_ERR (1 << 6) +#define UVC_STREAM_STI (1 << 5) +#define UVC_STREAM_RES (1 << 4) +#define UVC_STREAM_SCR (1 << 3) +#define UVC_STREAM_PTS (1 << 2) +#define UVC_STREAM_EOF (1 << 1) +#define UVC_STREAM_FID (1 << 0) + +struct uvc_streaming_control { + __u16 bmHint; + __u8 bFormatIndex; + __u8 bFrameIndex; + __u32 dwFrameInterval; + __u16 wKeyFrameRate; + __u16 wPFrameRate; + __u16 wCompQuality; + __u16 wCompWindowSize; + __u16 wDelay; + __u32 dwMaxVideoFrameSize; + __u32 dwMaxPayloadTransferSize; + __u32 dwClockFrequency; + __u8 bmFramingInfo; + __u8 bPreferedVersion; + __u8 bMinVersion; + __u8 bMaxVersion; +} __attribute__((__packed__)); + +/* ------------------------------------------------------------------------ + * Debugging, printing and logging + */ + +#ifdef __KERNEL__ + +#include /* For usb_endpoint_* */ +#include +#include +#include + +#include "uvc_queue.h" + +#define UVC_TRACE_PROBE (1 << 0) +#define UVC_TRACE_DESCR (1 << 1) +#define UVC_TRACE_CONTROL (1 << 2) +#define UVC_TRACE_FORMAT (1 << 3) +#define UVC_TRACE_CAPTURE (1 << 4) +#define UVC_TRACE_CALLS (1 << 5) +#define UVC_TRACE_IOCTL (1 << 6) +#define UVC_TRACE_FRAME (1 << 7) +#define UVC_TRACE_SUSPEND (1 << 8) +#define UVC_TRACE_STATUS (1 << 9) + +#define UVC_WARN_MINMAX 0 +#define UVC_WARN_PROBE_DEF 1 + +extern unsigned int uvc_trace_param; + +#define uvc_trace(flag, msg...) \ + do { \ + if (uvc_trace_param & flag) \ + printk(KERN_DEBUG "uvcvideo: " msg); \ + } while (0) + +#define uvc_warn_once(dev, warn, msg...) \ + do { \ + if (!test_and_set_bit(warn, &dev->warnings)) \ + printk(KERN_INFO "uvcvideo: " msg); \ + } while (0) + +#define uvc_printk(level, msg...) \ + printk(level "uvcvideo: " msg) + +/* ------------------------------------------------------------------------ + * Driver specific constants + */ + +#define DRIVER_VERSION "0.1.0" +#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0) + +#define DMA_ADDR_INVALID (~(dma_addr_t)0) + +#define UVC_NUM_REQUESTS 4 +#define UVC_MAX_REQUEST_SIZE 64 +#define UVC_MAX_EVENTS 4 + +#define USB_DT_INTERFACE_ASSOCIATION_SIZE 8 +#define USB_CLASS_MISC 0xef + +/* ------------------------------------------------------------------------ + * Structures + */ + +struct uvc_video +{ + struct usb_ep *ep; + + /* Frame parameters */ + u8 bpp; + u32 fcc; + unsigned int width; + unsigned int height; + unsigned int imagesize; + + /* Requests */ + unsigned int req_size; + struct usb_request *req[UVC_NUM_REQUESTS]; + __u8 *req_buffer[UVC_NUM_REQUESTS]; + struct list_head req_free; + spinlock_t req_lock; + + void (*encode) (struct usb_request *req, struct uvc_video *video, + struct uvc_buffer *buf); + + /* Context data used by the completion handler */ + __u32 payload_size; + __u32 max_payload_size; + + struct uvc_video_queue queue; + unsigned int fid; +}; + +enum uvc_state +{ + UVC_STATE_DISCONNECTED, + UVC_STATE_CONNECTED, + UVC_STATE_STREAMING, +}; + +struct uvc_device +{ + struct video_device *vdev; + enum uvc_state state; + struct usb_function func; + struct uvc_video video; + + /* Descriptors */ + struct { + const struct uvc_descriptor_header * const *control; + const struct uvc_descriptor_header * const *fs_streaming; + const struct uvc_descriptor_header * const *hs_streaming; + } desc; + + unsigned int control_intf; + struct usb_ep *control_ep; + struct usb_request *control_req; + void *control_buf; + + unsigned int streaming_intf; + + /* Events */ + unsigned int event_length; + unsigned int event_setup_out : 1; +}; + +static inline struct uvc_device *to_uvc(struct usb_function *f) +{ + return container_of(f, struct uvc_device, func); +} + +struct uvc_file_handle +{ + struct v4l2_fh vfh; + struct uvc_video *device; +}; + +#define to_uvc_file_handle(handle) \ + container_of(handle, struct uvc_file_handle, vfh) + +extern struct v4l2_file_operations uvc_v4l2_fops; + +/* ------------------------------------------------------------------------ + * Functions + */ + +extern int uvc_video_enable(struct uvc_video *video, int enable); +extern int uvc_video_init(struct uvc_video *video); +extern int uvc_video_pump(struct uvc_video *video); + +extern void uvc_endpoint_stream(struct uvc_device *dev); + +extern void uvc_function_connect(struct uvc_device *uvc); +extern void uvc_function_disconnect(struct uvc_device *uvc); + +#endif /* __KERNEL__ */ + +#endif /* _UVC_GADGET_H_ */ + diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c new file mode 100644 index 000000000000..43891991bf21 --- /dev/null +++ b/drivers/usb/gadget/uvc_queue.c @@ -0,0 +1,583 @@ +/* + * uvc_queue.c -- USB Video Class driver - Buffers management + * + * Copyright (C) 2005-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "uvc.h" + +/* ------------------------------------------------------------------------ + * Video buffers queue management. + * + * Video queues is initialized by uvc_queue_init(). The function performs + * basic initialization of the uvc_video_queue struct and never fails. + * + * Video buffer allocation and freeing are performed by uvc_alloc_buffers and + * uvc_free_buffers respectively. The former acquires the video queue lock, + * while the later must be called with the lock held (so that allocation can + * free previously allocated buffers). Trying to free buffers that are mapped + * to user space will return -EBUSY. + * + * Video buffers are managed using two queues. However, unlike most USB video + * drivers that use an in queue and an out queue, we use a main queue to hold + * all queued buffers (both 'empty' and 'done' buffers), and an irq queue to + * hold empty buffers. This design (copied from video-buf) minimizes locking + * in interrupt, as only one queue is shared between interrupt and user + * contexts. + * + * Use cases + * --------- + * + * Unless stated otherwise, all operations that modify the irq buffers queue + * are protected by the irq spinlock. + * + * 1. The user queues the buffers, starts streaming and dequeues a buffer. + * + * The buffers are added to the main and irq queues. Both operations are + * protected by the queue lock, and the later is protected by the irq + * spinlock as well. + * + * The completion handler fetches a buffer from the irq queue and fills it + * with video data. If no buffer is available (irq queue empty), the handler + * returns immediately. + * + * When the buffer is full, the completion handler removes it from the irq + * queue, marks it as ready (UVC_BUF_STATE_DONE) and wakes its wait queue. + * At that point, any process waiting on the buffer will be woken up. If a + * process tries to dequeue a buffer after it has been marked ready, the + * dequeing will succeed immediately. + * + * 2. Buffers are queued, user is waiting on a buffer and the device gets + * disconnected. + * + * When the device is disconnected, the kernel calls the completion handler + * with an appropriate status code. The handler marks all buffers in the + * irq queue as being erroneous (UVC_BUF_STATE_ERROR) and wakes them up so + * that any process waiting on a buffer gets woken up. + * + * Waking up up the first buffer on the irq list is not enough, as the + * process waiting on the buffer might restart the dequeue operation + * immediately. + * + */ + +void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type) +{ + mutex_init(&queue->mutex); + spin_lock_init(&queue->irqlock); + INIT_LIST_HEAD(&queue->mainqueue); + INIT_LIST_HEAD(&queue->irqqueue); + queue->type = type; +} + +/* + * Allocate the video buffers. + * + * Pages are reserved to make sure they will not be swapped, as they will be + * filled in the URB completion handler. + * + * Buffers will be individually mapped, so they must all be page aligned. + */ +int uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers, + unsigned int buflength) +{ + unsigned int bufsize = PAGE_ALIGN(buflength); + unsigned int i; + void *mem = NULL; + int ret; + + if (nbuffers > UVC_MAX_VIDEO_BUFFERS) + nbuffers = UVC_MAX_VIDEO_BUFFERS; + + mutex_lock(&queue->mutex); + + if ((ret = uvc_free_buffers(queue)) < 0) + goto done; + + /* Bail out if no buffers should be allocated. */ + if (nbuffers == 0) + goto done; + + /* Decrement the number of buffers until allocation succeeds. */ + for (; nbuffers > 0; --nbuffers) { + mem = vmalloc_32(nbuffers * bufsize); + if (mem != NULL) + break; + } + + if (mem == NULL) { + ret = -ENOMEM; + goto done; + } + + for (i = 0; i < nbuffers; ++i) { + memset(&queue->buffer[i], 0, sizeof queue->buffer[i]); + queue->buffer[i].buf.index = i; + queue->buffer[i].buf.m.offset = i * bufsize; + queue->buffer[i].buf.length = buflength; + queue->buffer[i].buf.type = queue->type; + queue->buffer[i].buf.sequence = 0; + queue->buffer[i].buf.field = V4L2_FIELD_NONE; + queue->buffer[i].buf.memory = V4L2_MEMORY_MMAP; + queue->buffer[i].buf.flags = 0; + init_waitqueue_head(&queue->buffer[i].wait); + } + + queue->mem = mem; + queue->count = nbuffers; + queue->buf_size = bufsize; + ret = nbuffers; + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +/* + * Free the video buffers. + * + * This function must be called with the queue lock held. + */ +int uvc_free_buffers(struct uvc_video_queue *queue) +{ + unsigned int i; + + for (i = 0; i < queue->count; ++i) { + if (queue->buffer[i].vma_use_count != 0) + return -EBUSY; + } + + if (queue->count) { + vfree(queue->mem); + queue->count = 0; + } + + return 0; +} + +static void __uvc_query_buffer(struct uvc_buffer *buf, + struct v4l2_buffer *v4l2_buf) +{ + memcpy(v4l2_buf, &buf->buf, sizeof *v4l2_buf); + + if (buf->vma_use_count) + v4l2_buf->flags |= V4L2_BUF_FLAG_MAPPED; + + switch (buf->state) { + case UVC_BUF_STATE_ERROR: + case UVC_BUF_STATE_DONE: + v4l2_buf->flags |= V4L2_BUF_FLAG_DONE; + break; + case UVC_BUF_STATE_QUEUED: + case UVC_BUF_STATE_ACTIVE: + v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; + break; + case UVC_BUF_STATE_IDLE: + default: + break; + } +} + +int uvc_query_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf) +{ + int ret = 0; + + mutex_lock(&queue->mutex); + if (v4l2_buf->index >= queue->count) { + ret = -EINVAL; + goto done; + } + + __uvc_query_buffer(&queue->buffer[v4l2_buf->index], v4l2_buf); + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +/* + * Queue a video buffer. Attempting to queue a buffer that has already been + * queued will return -EINVAL. + */ +int uvc_queue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf) +{ + struct uvc_buffer *buf; + unsigned long flags; + int ret = 0; + + uvc_trace(UVC_TRACE_CAPTURE, "Queuing buffer %u.\n", v4l2_buf->index); + + if (v4l2_buf->type != queue->type || + v4l2_buf->memory != V4L2_MEMORY_MMAP) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) " + "and/or memory (%u).\n", v4l2_buf->type, + v4l2_buf->memory); + return -EINVAL; + } + + mutex_lock(&queue->mutex); + if (v4l2_buf->index >= queue->count) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Out of range index.\n"); + ret = -EINVAL; + goto done; + } + + buf = &queue->buffer[v4l2_buf->index]; + if (buf->state != UVC_BUF_STATE_IDLE) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state " + "(%u).\n", buf->state); + ret = -EINVAL; + goto done; + } + + if (v4l2_buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && + v4l2_buf->bytesused > buf->buf.length) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n"); + ret = -EINVAL; + goto done; + } + + if (v4l2_buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + buf->buf.bytesused = 0; + else + buf->buf.bytesused = v4l2_buf->bytesused; + + spin_lock_irqsave(&queue->irqlock, flags); + if (queue->flags & UVC_QUEUE_DISCONNECTED) { + spin_unlock_irqrestore(&queue->irqlock, flags); + ret = -ENODEV; + goto done; + } + buf->state = UVC_BUF_STATE_QUEUED; + + ret = (queue->flags & UVC_QUEUE_PAUSED) != 0; + queue->flags &= ~UVC_QUEUE_PAUSED; + + list_add_tail(&buf->stream, &queue->mainqueue); + list_add_tail(&buf->queue, &queue->irqqueue); + spin_unlock_irqrestore(&queue->irqlock, flags); + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +static int uvc_queue_waiton(struct uvc_buffer *buf, int nonblocking) +{ + if (nonblocking) { + return (buf->state != UVC_BUF_STATE_QUEUED && + buf->state != UVC_BUF_STATE_ACTIVE) + ? 0 : -EAGAIN; + } + + return wait_event_interruptible(buf->wait, + buf->state != UVC_BUF_STATE_QUEUED && + buf->state != UVC_BUF_STATE_ACTIVE); +} + +/* + * Dequeue a video buffer. If nonblocking is false, block until a buffer is + * available. + */ +int uvc_dequeue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf, int nonblocking) +{ + struct uvc_buffer *buf; + int ret = 0; + + if (v4l2_buf->type != queue->type || + v4l2_buf->memory != V4L2_MEMORY_MMAP) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) " + "and/or memory (%u).\n", v4l2_buf->type, + v4l2_buf->memory); + return -EINVAL; + } + + mutex_lock(&queue->mutex); + if (list_empty(&queue->mainqueue)) { + uvc_trace(UVC_TRACE_CAPTURE, "[E] Empty buffer queue.\n"); + ret = -EINVAL; + goto done; + } + + buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream); + if ((ret = uvc_queue_waiton(buf, nonblocking)) < 0) + goto done; + + uvc_trace(UVC_TRACE_CAPTURE, "Dequeuing buffer %u (%u, %u bytes).\n", + buf->buf.index, buf->state, buf->buf.bytesused); + + switch (buf->state) { + case UVC_BUF_STATE_ERROR: + uvc_trace(UVC_TRACE_CAPTURE, "[W] Corrupted data " + "(transmission error).\n"); + ret = -EIO; + case UVC_BUF_STATE_DONE: + buf->state = UVC_BUF_STATE_IDLE; + break; + + case UVC_BUF_STATE_IDLE: + case UVC_BUF_STATE_QUEUED: + case UVC_BUF_STATE_ACTIVE: + default: + uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state %u " + "(driver bug?).\n", buf->state); + ret = -EINVAL; + goto done; + } + + list_del(&buf->stream); + __uvc_query_buffer(buf, v4l2_buf); + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +/* + * Poll the video queue. + * + * This function implements video queue polling and is intended to be used by + * the device poll handler. + */ +unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, + poll_table *wait) +{ + struct uvc_buffer *buf; + unsigned int mask = 0; + + mutex_lock(&queue->mutex); + if (list_empty(&queue->mainqueue)) + goto done; + + buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream); + + poll_wait(file, &buf->wait, wait); + if (buf->state == UVC_BUF_STATE_DONE || + buf->state == UVC_BUF_STATE_ERROR) + mask |= POLLOUT | POLLWRNORM; + +done: + mutex_unlock(&queue->mutex); + return mask; +} + +/* + * VMA operations. + */ +static void uvc_vm_open(struct vm_area_struct *vma) +{ + struct uvc_buffer *buffer = vma->vm_private_data; + buffer->vma_use_count++; +} + +static void uvc_vm_close(struct vm_area_struct *vma) +{ + struct uvc_buffer *buffer = vma->vm_private_data; + buffer->vma_use_count--; +} + +static struct vm_operations_struct uvc_vm_ops = { + .open = uvc_vm_open, + .close = uvc_vm_close, +}; + +/* + * Memory-map a buffer. + * + * This function implements video buffer memory mapping and is intended to be + * used by the device mmap handler. + */ +int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma) +{ + struct uvc_buffer *uninitialized_var(buffer); + struct page *page; + unsigned long addr, start, size; + unsigned int i; + int ret = 0; + + start = vma->vm_start; + size = vma->vm_end - vma->vm_start; + + mutex_lock(&queue->mutex); + + for (i = 0; i < queue->count; ++i) { + buffer = &queue->buffer[i]; + if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) + break; + } + + if (i == queue->count || size != queue->buf_size) { + ret = -EINVAL; + goto done; + } + + /* + * VM_IO marks the area as being an mmaped region for I/O to a + * device. It also prevents the region from being core dumped. + */ + vma->vm_flags |= VM_IO; + + addr = (unsigned long)queue->mem + buffer->buf.m.offset; + while (size > 0) { + page = vmalloc_to_page((void *)addr); + if ((ret = vm_insert_page(vma, start, page)) < 0) + goto done; + + start += PAGE_SIZE; + addr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + vma->vm_ops = &uvc_vm_ops; + vma->vm_private_data = buffer; + uvc_vm_open(vma); + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +/* + * Enable or disable the video buffers queue. + * + * The queue must be enabled before starting video acquisition and must be + * disabled after stopping it. This ensures that the video buffers queue + * state can be properly initialized before buffers are accessed from the + * interrupt handler. + * + * Enabling the video queue initializes parameters (such as sequence number, + * sync pattern, ...). If the queue is already enabled, return -EBUSY. + * + * Disabling the video queue cancels the queue and removes all buffers from + * the main queue. + * + * This function can't be called from interrupt context. Use + * uvc_queue_cancel() instead. + */ +int uvc_queue_enable(struct uvc_video_queue *queue, int enable) +{ + unsigned int i; + int ret = 0; + + mutex_lock(&queue->mutex); + if (enable) { + if (uvc_queue_streaming(queue)) { + ret = -EBUSY; + goto done; + } + queue->sequence = 0; + queue->flags |= UVC_QUEUE_STREAMING; + queue->buf_used = 0; + } else { + uvc_queue_cancel(queue, 0); + INIT_LIST_HEAD(&queue->mainqueue); + + for (i = 0; i < queue->count; ++i) + queue->buffer[i].state = UVC_BUF_STATE_IDLE; + + queue->flags &= ~UVC_QUEUE_STREAMING; + } + +done: + mutex_unlock(&queue->mutex); + return ret; +} + +/* + * Cancel the video buffers queue. + * + * Cancelling the queue marks all buffers on the irq queue as erroneous, + * wakes them up and removes them from the queue. + * + * If the disconnect parameter is set, further calls to uvc_queue_buffer will + * fail with -ENODEV. + * + * This function acquires the irq spinlock and can be called from interrupt + * context. + */ +void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect) +{ + struct uvc_buffer *buf; + unsigned long flags; + + spin_lock_irqsave(&queue->irqlock, flags); + while (!list_empty(&queue->irqqueue)) { + buf = list_first_entry(&queue->irqqueue, struct uvc_buffer, + queue); + list_del(&buf->queue); + buf->state = UVC_BUF_STATE_ERROR; + wake_up(&buf->wait); + } + /* This must be protected by the irqlock spinlock to avoid race + * conditions between uvc_queue_buffer and the disconnection event that + * could result in an interruptible wait in uvc_dequeue_buffer. Do not + * blindly replace this logic by checking for the UVC_DEV_DISCONNECTED + * state outside the queue code. + */ + if (disconnect) + queue->flags |= UVC_QUEUE_DISCONNECTED; + spin_unlock_irqrestore(&queue->irqlock, flags); +} + +struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, + struct uvc_buffer *buf) +{ + struct uvc_buffer *nextbuf; + unsigned long flags; + + if ((queue->flags & UVC_QUEUE_DROP_INCOMPLETE) && + buf->buf.length != buf->buf.bytesused) { + buf->state = UVC_BUF_STATE_QUEUED; + buf->buf.bytesused = 0; + return buf; + } + + spin_lock_irqsave(&queue->irqlock, flags); + list_del(&buf->queue); + if (!list_empty(&queue->irqqueue)) + nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer, + queue); + else + nextbuf = NULL; + spin_unlock_irqrestore(&queue->irqlock, flags); + + buf->buf.sequence = queue->sequence++; + do_gettimeofday(&buf->buf.timestamp); + + wake_up(&buf->wait); + return nextbuf; +} + +struct uvc_buffer *uvc_queue_head(struct uvc_video_queue *queue) +{ + struct uvc_buffer *buf = NULL; + + if (!list_empty(&queue->irqqueue)) + buf = list_first_entry(&queue->irqqueue, struct uvc_buffer, + queue); + else + queue->flags |= UVC_QUEUE_PAUSED; + + return buf; +} + diff --git a/drivers/usb/gadget/uvc_queue.h b/drivers/usb/gadget/uvc_queue.h new file mode 100644 index 000000000000..7f5a33fe7ae2 --- /dev/null +++ b/drivers/usb/gadget/uvc_queue.h @@ -0,0 +1,89 @@ +#ifndef _UVC_QUEUE_H_ +#define _UVC_QUEUE_H_ + +#ifdef __KERNEL__ + +#include +#include +#include + +/* Maximum frame size in bytes, for sanity checking. */ +#define UVC_MAX_FRAME_SIZE (16*1024*1024) +/* Maximum number of video buffers. */ +#define UVC_MAX_VIDEO_BUFFERS 32 + +/* ------------------------------------------------------------------------ + * Structures. + */ + +enum uvc_buffer_state { + UVC_BUF_STATE_IDLE = 0, + UVC_BUF_STATE_QUEUED = 1, + UVC_BUF_STATE_ACTIVE = 2, + UVC_BUF_STATE_DONE = 3, + UVC_BUF_STATE_ERROR = 4, +}; + +struct uvc_buffer { + unsigned long vma_use_count; + struct list_head stream; + + /* Touched by interrupt handler. */ + struct v4l2_buffer buf; + struct list_head queue; + wait_queue_head_t wait; + enum uvc_buffer_state state; +}; + +#define UVC_QUEUE_STREAMING (1 << 0) +#define UVC_QUEUE_DISCONNECTED (1 << 1) +#define UVC_QUEUE_DROP_INCOMPLETE (1 << 2) +#define UVC_QUEUE_PAUSED (1 << 3) + +struct uvc_video_queue { + enum v4l2_buf_type type; + + void *mem; + unsigned int flags; + __u32 sequence; + + unsigned int count; + unsigned int buf_size; + unsigned int buf_used; + struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS]; + struct mutex mutex; /* protects buffers and mainqueue */ + spinlock_t irqlock; /* protects irqqueue */ + + struct list_head mainqueue; + struct list_head irqqueue; +}; + +extern void uvc_queue_init(struct uvc_video_queue *queue, + enum v4l2_buf_type type); +extern int uvc_alloc_buffers(struct uvc_video_queue *queue, + unsigned int nbuffers, unsigned int buflength); +extern int uvc_free_buffers(struct uvc_video_queue *queue); +extern int uvc_query_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf); +extern int uvc_queue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf); +extern int uvc_dequeue_buffer(struct uvc_video_queue *queue, + struct v4l2_buffer *v4l2_buf, int nonblocking); +extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable); +extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect); +extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, + struct uvc_buffer *buf); +extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue, + struct file *file, poll_table *wait); +extern int uvc_queue_mmap(struct uvc_video_queue *queue, + struct vm_area_struct *vma); +static inline int uvc_queue_streaming(struct uvc_video_queue *queue) +{ + return queue->flags & UVC_QUEUE_STREAMING; +} +extern struct uvc_buffer *uvc_queue_head(struct uvc_video_queue *queue); + +#endif /* __KERNEL__ */ + +#endif /* _UVC_QUEUE_H_ */ + diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c new file mode 100644 index 000000000000..a7989f29837e --- /dev/null +++ b/drivers/usb/gadget/uvc_v4l2.c @@ -0,0 +1,374 @@ +/* + * uvc_v4l2.c -- USB Video Class Gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "uvc.h" +#include "uvc_queue.h" + +/* -------------------------------------------------------------------------- + * Requests handling + */ + +static int +uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data) +{ + struct usb_composite_dev *cdev = uvc->func.config->cdev; + struct usb_request *req = uvc->control_req; + + if (data->length < 0) + return usb_ep_set_halt(cdev->gadget->ep0); + + req->length = min(uvc->event_length, data->length); + req->zero = data->length < uvc->event_length; + req->dma = DMA_ADDR_INVALID; + + memcpy(req->buf, data->data, data->length); + + return usb_ep_queue(cdev->gadget->ep0, req, GFP_KERNEL); +} + +/* -------------------------------------------------------------------------- + * V4L2 + */ + +struct uvc_format +{ + u8 bpp; + u32 fcc; +}; + +static struct uvc_format uvc_formats[] = { + { 16, V4L2_PIX_FMT_YUYV }, + { 0, V4L2_PIX_FMT_MJPEG }, +}; + +static int +uvc_v4l2_get_format(struct uvc_video *video, struct v4l2_format *fmt) +{ + fmt->fmt.pix.pixelformat = video->fcc; + fmt->fmt.pix.width = video->width; + fmt->fmt.pix.height = video->height; + fmt->fmt.pix.field = V4L2_FIELD_NONE; + fmt->fmt.pix.bytesperline = video->bpp * video->width / 8; + fmt->fmt.pix.sizeimage = video->imagesize; + fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + fmt->fmt.pix.priv = 0; + + return 0; +} + +static int +uvc_v4l2_set_format(struct uvc_video *video, struct v4l2_format *fmt) +{ + struct uvc_format *format; + unsigned int imagesize; + unsigned int bpl; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(uvc_formats); ++i) { + format = &uvc_formats[i]; + if (format->fcc == fmt->fmt.pix.pixelformat) + break; + } + + if (format == NULL || format->fcc != fmt->fmt.pix.pixelformat) { + printk(KERN_INFO "Unsupported format 0x%08x.\n", + fmt->fmt.pix.pixelformat); + return -EINVAL; + } + + bpl = format->bpp * fmt->fmt.pix.width / 8; + imagesize = bpl ? bpl * fmt->fmt.pix.height : fmt->fmt.pix.sizeimage; + + video->fcc = format->fcc; + video->bpp = format->bpp; + video->width = fmt->fmt.pix.width; + video->height = fmt->fmt.pix.height; + video->imagesize = imagesize; + + fmt->fmt.pix.field = V4L2_FIELD_NONE; + fmt->fmt.pix.bytesperline = bpl; + fmt->fmt.pix.sizeimage = imagesize; + fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + fmt->fmt.pix.priv = 0; + + return 0; +} + +static int +uvc_v4l2_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_file_handle *handle; + int ret; + + handle = kzalloc(sizeof(*handle), GFP_KERNEL); + if (handle == NULL) + return -ENOMEM; + + ret = v4l2_fh_init(&handle->vfh, vdev); + if (ret < 0) + goto error; + + ret = v4l2_event_init(&handle->vfh); + if (ret < 0) + goto error; + + ret = v4l2_event_alloc(&handle->vfh, 8); + if (ret < 0) + goto error; + + v4l2_fh_add(&handle->vfh); + + handle->device = &uvc->video; + file->private_data = &handle->vfh; + + uvc_function_connect(uvc); + return 0; + +error: + v4l2_fh_exit(&handle->vfh); + return ret; +} + +static int +uvc_v4l2_release(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data); + struct uvc_video *video = handle->device; + + uvc_function_disconnect(uvc); + + uvc_video_enable(video, 0); + mutex_lock(&video->queue.mutex); + if (uvc_free_buffers(&video->queue) < 0) + printk(KERN_ERR "uvc_v4l2_release: Unable to free " + "buffers.\n"); + mutex_unlock(&video->queue.mutex); + + file->private_data = NULL; + v4l2_fh_del(&handle->vfh); + v4l2_fh_exit(&handle->vfh); + kfree(handle); + return 0; +} + +static long +uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data); + struct usb_composite_dev *cdev = uvc->func.config->cdev; + struct uvc_video *video = &uvc->video; + int ret = 0; + + switch (cmd) { + /* Query capabilities */ + case VIDIOC_QUERYCAP: + { + struct v4l2_capability *cap = arg; + + memset(cap, 0, sizeof *cap); + strncpy(cap->driver, "g_uvc", sizeof(cap->driver)); + strncpy(cap->card, cdev->gadget->name, sizeof(cap->card)); + strncpy(cap->bus_info, dev_name(&cdev->gadget->dev), + sizeof cap->bus_info); + cap->version = DRIVER_VERSION_NUMBER; + cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; + break; + } + + /* Get & Set format */ + case VIDIOC_G_FMT: + { + struct v4l2_format *fmt = arg; + + if (fmt->type != video->queue.type) + return -EINVAL; + + return uvc_v4l2_get_format(video, fmt); + } + + case VIDIOC_S_FMT: + { + struct v4l2_format *fmt = arg; + + if (fmt->type != video->queue.type) + return -EINVAL; + + return uvc_v4l2_set_format(video, fmt); + } + + /* Buffers & streaming */ + case VIDIOC_REQBUFS: + { + struct v4l2_requestbuffers *rb = arg; + + if (rb->type != video->queue.type || + rb->memory != V4L2_MEMORY_MMAP) + return -EINVAL; + + ret = uvc_alloc_buffers(&video->queue, rb->count, + video->imagesize); + if (ret < 0) + return ret; + + rb->count = ret; + ret = 0; + break; + } + + case VIDIOC_QUERYBUF: + { + struct v4l2_buffer *buf = arg; + + if (buf->type != video->queue.type) + return -EINVAL; + + return uvc_query_buffer(&video->queue, buf); + } + + case VIDIOC_QBUF: + if ((ret = uvc_queue_buffer(&video->queue, arg)) < 0) + return ret; + + return uvc_video_pump(video); + + case VIDIOC_DQBUF: + return uvc_dequeue_buffer(&video->queue, arg, + file->f_flags & O_NONBLOCK); + + case VIDIOC_STREAMON: + { + int *type = arg; + + if (*type != video->queue.type) + return -EINVAL; + + return uvc_video_enable(video, 1); + } + + case VIDIOC_STREAMOFF: + { + int *type = arg; + + if (*type != video->queue.type) + return -EINVAL; + + return uvc_video_enable(video, 0); + } + + /* Events */ + case VIDIOC_DQEVENT: + { + struct v4l2_event *event = arg; + + ret = v4l2_event_dequeue(&handle->vfh, event, + file->f_flags & O_NONBLOCK); + if (ret == 0 && event->type == UVC_EVENT_SETUP) { + struct uvc_event *uvc_event = (void *)&event->u.data; + + /* Tell the complete callback to generate an event for + * the next request that will be enqueued by + * uvc_event_write. + */ + uvc->event_setup_out = + !(uvc_event->req.bRequestType & USB_DIR_IN); + uvc->event_length = uvc_event->req.wLength; + } + + return ret; + } + + case VIDIOC_SUBSCRIBE_EVENT: + { + struct v4l2_event_subscription *sub = arg; + + if (sub->type < UVC_EVENT_FIRST || sub->type > UVC_EVENT_LAST) + return -EINVAL; + + return v4l2_event_subscribe(&handle->vfh, arg); + } + + case VIDIOC_UNSUBSCRIBE_EVENT: + return v4l2_event_unsubscribe(&handle->vfh, arg); + + case UVCIOC_SEND_RESPONSE: + ret = uvc_send_response(uvc, arg); + break; + + default: + return -ENOIOCTLCMD; + } + + return ret; +} + +static long +uvc_v4l2_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + return video_usercopy(file, cmd, arg, uvc_v4l2_do_ioctl); +} + +static int +uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + + return uvc_queue_mmap(&uvc->video.queue, vma); +} + +static unsigned int +uvc_v4l2_poll(struct file *file, poll_table *wait) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data); + unsigned int mask = 0; + + poll_wait(file, &handle->vfh.events->wait, wait); + if (v4l2_event_pending(&handle->vfh)) + mask |= POLLPRI; + + mask |= uvc_queue_poll(&uvc->video.queue, file, wait); + + return mask; +} + +struct v4l2_file_operations uvc_v4l2_fops = { + .owner = THIS_MODULE, + .open = uvc_v4l2_open, + .release = uvc_v4l2_release, + .ioctl = uvc_v4l2_ioctl, + .mmap = uvc_v4l2_mmap, + .poll = uvc_v4l2_poll, +}; + diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c new file mode 100644 index 000000000000..de8cbc46518d --- /dev/null +++ b/drivers/usb/gadget/uvc_video.c @@ -0,0 +1,386 @@ +/* + * uvc_video.c -- USB Video Class Gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include + +#include + +#include "uvc.h" +#include "uvc_queue.h" + +/* -------------------------------------------------------------------------- + * Video codecs + */ + +static int +uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, + u8 *data, int len) +{ + data[0] = 2; + data[1] = UVC_STREAM_EOH | video->fid; + + if (buf->buf.bytesused - video->queue.buf_used <= len - 2) + data[1] |= UVC_STREAM_EOF; + + return 2; +} + +static int +uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, + u8 *data, int len) +{ + struct uvc_video_queue *queue = &video->queue; + unsigned int nbytes; + void *mem; + + /* Copy video data to the USB buffer. */ + mem = queue->mem + buf->buf.m.offset + queue->buf_used; + nbytes = min((unsigned int)len, buf->buf.bytesused - queue->buf_used); + + memcpy(data, mem, nbytes); + queue->buf_used += nbytes; + + return nbytes; +} + +static void +uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, + struct uvc_buffer *buf) +{ + void *mem = req->buf; + int len = video->req_size; + int ret; + + /* Add a header at the beginning of the payload. */ + if (video->payload_size == 0) { + ret = uvc_video_encode_header(video, buf, mem, len); + video->payload_size += ret; + mem += ret; + len -= ret; + } + + /* Process video data. */ + len = min((int)(video->max_payload_size - video->payload_size), len); + ret = uvc_video_encode_data(video, buf, mem, len); + + video->payload_size += ret; + len -= ret; + + req->length = video->req_size - len; + req->zero = video->payload_size == video->max_payload_size; + + if (buf->buf.bytesused == video->queue.buf_used) { + video->queue.buf_used = 0; + buf->state = UVC_BUF_STATE_DONE; + uvc_queue_next_buffer(&video->queue, buf); + video->fid ^= UVC_STREAM_FID; + + video->payload_size = 0; + } + + if (video->payload_size == video->max_payload_size || + buf->buf.bytesused == video->queue.buf_used) + video->payload_size = 0; +} + +static void +uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, + struct uvc_buffer *buf) +{ + void *mem = req->buf; + int len = video->req_size; + int ret; + + /* Add the header. */ + ret = uvc_video_encode_header(video, buf, mem, len); + mem += ret; + len -= ret; + + /* Process video data. */ + ret = uvc_video_encode_data(video, buf, mem, len); + len -= ret; + + req->length = video->req_size - len; + + if (buf->buf.bytesused == video->queue.buf_used) { + video->queue.buf_used = 0; + buf->state = UVC_BUF_STATE_DONE; + uvc_queue_next_buffer(&video->queue, buf); + video->fid ^= UVC_STREAM_FID; + } +} + +/* -------------------------------------------------------------------------- + * Request handling + */ + +/* + * I somehow feel that synchronisation won't be easy to achieve here. We have + * three events that control USB requests submission: + * + * - USB request completion: the completion handler will resubmit the request + * if a video buffer is available. + * + * - USB interface setting selection: in response to a SET_INTERFACE request, + * the handler will start streaming if a video buffer is available and if + * video is not currently streaming. + * + * - V4L2 buffer queueing: the driver will start streaming if video is not + * currently streaming. + * + * Race conditions between those 3 events might lead to deadlocks or other + * nasty side effects. + * + * The "video currently streaming" condition can't be detected by the irqqueue + * being empty, as a request can still be in flight. A separate "queue paused" + * flag is thus needed. + * + * The paused flag will be set when we try to retrieve the irqqueue head if the + * queue is empty, and cleared when we queue a buffer. + * + * The USB request completion handler will get the buffer at the irqqueue head + * under protection of the queue spinlock. If the queue is empty, the streaming + * paused flag will be set. Right after releasing the spinlock a userspace + * application can queue a buffer. The flag will then cleared, and the ioctl + * handler will restart the video stream. + */ +static void +uvc_video_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct uvc_video *video = req->context; + struct uvc_buffer *buf; + unsigned long flags; + int ret; + + switch (req->status) { + case 0: + break; + + case -ESHUTDOWN: + printk(KERN_INFO "VS request cancelled.\n"); + goto requeue; + + default: + printk(KERN_INFO "VS request completed with status %d.\n", + req->status); + goto requeue; + } + + spin_lock_irqsave(&video->queue.irqlock, flags); + buf = uvc_queue_head(&video->queue); + if (buf == NULL) { + spin_unlock_irqrestore(&video->queue.irqlock, flags); + goto requeue; + } + + video->encode(req, video, buf); + + if ((ret = usb_ep_queue(ep, req, GFP_ATOMIC)) < 0) { + printk(KERN_INFO "Failed to queue request (%d).\n", ret); + usb_ep_set_halt(ep); + spin_unlock_irqrestore(&video->queue.irqlock, flags); + goto requeue; + } + spin_unlock_irqrestore(&video->queue.irqlock, flags); + + return; + +requeue: + spin_lock_irqsave(&video->req_lock, flags); + list_add_tail(&req->list, &video->req_free); + spin_unlock_irqrestore(&video->req_lock, flags); +} + +static int +uvc_video_free_requests(struct uvc_video *video) +{ + unsigned int i; + + for (i = 0; i < UVC_NUM_REQUESTS; ++i) { + if (video->req[i]) { + usb_ep_free_request(video->ep, video->req[i]); + video->req[i] = NULL; + } + + if (video->req_buffer[i]) { + kfree(video->req_buffer[i]); + video->req_buffer[i] = NULL; + } + } + + INIT_LIST_HEAD(&video->req_free); + video->req_size = 0; + return 0; +} + +static int +uvc_video_alloc_requests(struct uvc_video *video) +{ + unsigned int i; + int ret = -ENOMEM; + + BUG_ON(video->req_size); + + for (i = 0; i < UVC_NUM_REQUESTS; ++i) { + video->req_buffer[i] = kmalloc(video->ep->maxpacket, GFP_KERNEL); + if (video->req_buffer[i] == NULL) + goto error; + + video->req[i] = usb_ep_alloc_request(video->ep, GFP_KERNEL); + if (video->req[i] == NULL) + goto error; + + video->req[i]->buf = video->req_buffer[i]; + video->req[i]->length = 0; + video->req[i]->dma = DMA_ADDR_INVALID; + video->req[i]->complete = uvc_video_complete; + video->req[i]->context = video; + + list_add_tail(&video->req[i]->list, &video->req_free); + } + + video->req_size = video->ep->maxpacket; + return 0; + +error: + uvc_video_free_requests(video); + return ret; +} + +/* -------------------------------------------------------------------------- + * Video streaming + */ + +/* + * uvc_video_pump - Pump video data into the USB requests + * + * This function fills the available USB requests (listed in req_free) with + * video data from the queued buffers. + */ +int +uvc_video_pump(struct uvc_video *video) +{ + struct usb_request *req; + struct uvc_buffer *buf; + unsigned long flags; + int ret; + + /* FIXME TODO Race between uvc_video_pump and requests completion + * handler ??? + */ + + while (1) { + /* Retrieve the first available USB request, protected by the + * request lock. + */ + spin_lock_irqsave(&video->req_lock, flags); + if (list_empty(&video->req_free)) { + spin_unlock_irqrestore(&video->req_lock, flags); + return 0; + } + req = list_first_entry(&video->req_free, struct usb_request, + list); + list_del(&req->list); + spin_unlock_irqrestore(&video->req_lock, flags); + + /* Retrieve the first available video buffer and fill the + * request, protected by the video queue irqlock. + */ + spin_lock_irqsave(&video->queue.irqlock, flags); + buf = uvc_queue_head(&video->queue); + if (buf == NULL) { + spin_unlock_irqrestore(&video->queue.irqlock, flags); + break; + } + + video->encode(req, video, buf); + + /* Queue the USB request */ + if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) { + printk(KERN_INFO "Failed to queue request (%d)\n", ret); + usb_ep_set_halt(video->ep); + spin_unlock_irqrestore(&video->queue.irqlock, flags); + break; + } + spin_unlock_irqrestore(&video->queue.irqlock, flags); + } + + spin_lock_irqsave(&video->req_lock, flags); + list_add_tail(&req->list, &video->req_free); + spin_unlock_irqrestore(&video->req_lock, flags); + return 0; +} + +/* + * Enable or disable the video stream. + */ +int +uvc_video_enable(struct uvc_video *video, int enable) +{ + unsigned int i; + int ret; + + if (video->ep == NULL) { + printk(KERN_INFO "Video enable failed, device is " + "uninitialized.\n"); + return -ENODEV; + } + + if (!enable) { + for (i = 0; i < UVC_NUM_REQUESTS; ++i) + usb_ep_dequeue(video->ep, video->req[i]); + + uvc_video_free_requests(video); + uvc_queue_enable(&video->queue, 0); + return 0; + } + + if ((ret = uvc_queue_enable(&video->queue, 1)) < 0) + return ret; + + if ((ret = uvc_video_alloc_requests(video)) < 0) + return ret; + + if (video->max_payload_size) { + video->encode = uvc_video_encode_bulk; + video->payload_size = 0; + } else + video->encode = uvc_video_encode_isoc; + + return uvc_video_pump(video); +} + +/* + * Initialize the UVC video stream. + */ +int +uvc_video_init(struct uvc_video *video) +{ + INIT_LIST_HEAD(&video->req_free); + spin_lock_init(&video->req_lock); + + video->fcc = V4L2_PIX_FMT_YUYV; + video->bpp = 16; + video->width = 320; + video->height = 240; + video->imagesize = 320 * 240 * 2; + + /* Initialize the video buffers queue. */ + uvc_queue_init(&video->queue, V4L2_BUF_TYPE_VIDEO_OUTPUT); + return 0; +} + -- cgit v1.2.3-58-ga151 From a9914127e834acf648a96c72b4e271dc0c1c7c74 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 2 May 2010 20:57:42 +0200 Subject: USB gadget: Webcam device This webcam gadget instantiates a UVC camera (360p and 720p resolutions in YUYV and MJPEG). Signed-off-by: Laurent Pinchart Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 9 +- drivers/usb/gadget/Makefile | 2 + drivers/usb/gadget/webcam.c | 399 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 409 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/gadget/webcam.c (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 390c13372bdc..10bfb4197599 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -877,8 +877,15 @@ config USB_G_HID # put drivers that need isochronous transfer support (for audio # or video class gadget drivers), or specific hardware, here. +config USB_G_WEBCAM + tristate "USB Webcam Gadget" + help + The Webcam Gadget acts as a composite USB Audio and Video Class + device. It provides a userspace API to process UVC control requests + and stream video data to the host. -# - none yet + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "g_webcam". endchoice diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 3075ff9cae62..03a27d921c26 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -45,6 +45,7 @@ g_cdc-objs := cdc2.o g_multi-objs := multi.o g_hid-objs := hid.o g_nokia-objs := nokia.o +g_webcam-objs := webcam.o obj-$(CONFIG_USB_ZERO) += g_zero.o obj-$(CONFIG_USB_AUDIO) += g_audio.o @@ -59,4 +60,5 @@ obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o obj-$(CONFIG_USB_G_HID) += g_hid.o obj-$(CONFIG_USB_G_MULTI) += g_multi.o obj-$(CONFIG_USB_G_NOKIA) += g_nokia.o +obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c new file mode 100644 index 000000000000..417fd6887698 --- /dev/null +++ b/drivers/usb/gadget/webcam.c @@ -0,0 +1,399 @@ +/* + * webcam.c -- USB webcam gadget driver + * + * Copyright (C) 2009-2010 + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ +#include +#include +#include + +#include "f_uvc.h" + +/* + * Kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#include "f_uvc.c" +#include "uvc_queue.c" +#include "uvc_v4l2.c" +#include "uvc_video.c" + +/* -------------------------------------------------------------------------- + * Device descriptor + */ + +#define WEBCAM_VENDOR_ID 0x1d6b /* Linux Foundation */ +#define WEBCAM_PRODUCT_ID 0x0102 /* Webcam A/V gadget */ +#define WEBCAM_DEVICE_BCD 0x0010 /* 0.10 */ + +static char webcam_vendor_label[] = "Linux Foundation"; +static char webcam_product_label[] = "Webcam gadget"; +static char webcam_config_label[] = "Video"; + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_DESCRIPTION_IDX 2 + +static struct usb_string webcam_strings[] = { + [STRING_MANUFACTURER_IDX].s = webcam_vendor_label, + [STRING_PRODUCT_IDX].s = webcam_product_label, + [STRING_DESCRIPTION_IDX].s = webcam_config_label, + { } +}; + +static struct usb_gadget_strings webcam_stringtab = { + .language = 0x0409, /* en-us */ + .strings = webcam_strings, +}; + +static struct usb_gadget_strings *webcam_device_strings[] = { + &webcam_stringtab, + NULL, +}; + +static struct usb_device_descriptor webcam_device_descriptor = { + .bLength = USB_DT_DEVICE_SIZE, + .bDescriptorType = USB_DT_DEVICE, + .bcdUSB = cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_MISC, + .bDeviceSubClass = 0x02, + .bDeviceProtocol = 0x01, + .bMaxPacketSize0 = 0, /* dynamic */ + .idVendor = cpu_to_le16(WEBCAM_VENDOR_ID), + .idProduct = cpu_to_le16(WEBCAM_PRODUCT_ID), + .bcdDevice = cpu_to_le16(WEBCAM_DEVICE_BCD), + .iManufacturer = 0, /* dynamic */ + .iProduct = 0, /* dynamic */ + .iSerialNumber = 0, /* dynamic */ + .bNumConfigurations = 0, /* dynamic */ +}; + +DECLARE_UVC_HEADER_DESCRIPTOR(1); + +static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = { + .bLength = UVC_DT_HEADER_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_HEADER, + .bcdUVC = cpu_to_le16(0x0100), + .wTotalLength = 0, /* dynamic */ + .dwClockFrequency = cpu_to_le32(48000000), + .bInCollection = 0, /* dynamic */ + .baInterfaceNr[0] = 0, /* dynamic */ +}; + +static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = { + .bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_INPUT_TERMINAL, + .bTerminalID = 1, + .wTerminalType = cpu_to_le16(0x0201), + .bAssocTerminal = 0, + .iTerminal = 0, + .wObjectiveFocalLengthMin = cpu_to_le16(0), + .wObjectiveFocalLengthMax = cpu_to_le16(0), + .wOcularFocalLength = cpu_to_le16(0), + .bControlSize = 3, + .bmControls[0] = 2, + .bmControls[1] = 0, + .bmControls[2] = 0, +}; + +static const struct uvc_processing_unit_descriptor uvc_processing = { + .bLength = UVC_DT_PROCESSING_UNIT_SIZE(2), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_PROCESSING_UNIT, + .bUnitID = 2, + .bSourceID = 1, + .wMaxMultiplier = cpu_to_le16(16*1024), + .bControlSize = 2, + .bmControls[0] = 1, + .bmControls[1] = 0, + .iProcessing = 0, +}; + +static const struct uvc_output_terminal_descriptor uvc_output_terminal = { + .bLength = UVC_DT_OUTPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_OUTPUT_TERMINAL, + .bTerminalID = 3, + .wTerminalType = cpu_to_le16(0x0101), + .bAssocTerminal = 0, + .bSourceID = 2, + .iTerminal = 0, +}; + +DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(1, 2); + +static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = { + .bLength = UVC_DT_INPUT_HEADER_SIZE(1, 2), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_INPUT_HEADER, + .bNumFormats = 2, + .wTotalLength = 0, /* dynamic */ + .bEndpointAddress = 0, /* dynamic */ + .bmInfo = 0, + .bTerminalLink = 3, + .bStillCaptureMethod = 0, + .bTriggerSupport = 0, + .bTriggerUsage = 0, + .bControlSize = 1, + .bmaControls[0][0] = 0, + .bmaControls[1][0] = 4, +}; + +static const struct uvc_format_uncompressed uvc_format_yuv = { + .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FORMAT_UNCOMPRESSED, + .bFormatIndex = 1, + .bNumFrameDescriptors = 2, + .guidFormat = + { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}, + .bBitsPerPixel = 16, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterfaceFlags = 0, + .bCopyProtect = 0, +}; + +DECLARE_UVC_FRAME_UNCOMPRESSED(1); +DECLARE_UVC_FRAME_UNCOMPRESSED(3); + +static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { + .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FRAME_UNCOMPRESSED, + .bFrameIndex = 1, + .bmCapabilities = 0, + .wWidth = cpu_to_le16(640), + .wHeight = cpu_to_le16(360), + .dwMinBitRate = cpu_to_le32(18432000), + .dwMaxBitRate = cpu_to_le32(55296000), + .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), + .dwDefaultFrameInterval = cpu_to_le32(666666), + .bFrameIntervalType = 3, + .dwFrameInterval[0] = cpu_to_le32(666666), + .dwFrameInterval[1] = cpu_to_le32(1000000), + .dwFrameInterval[2] = cpu_to_le32(5000000), +}; + +static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { + .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FRAME_UNCOMPRESSED, + .bFrameIndex = 2, + .bmCapabilities = 0, + .wWidth = cpu_to_le16(1280), + .wHeight = cpu_to_le16(720), + .dwMinBitRate = cpu_to_le32(29491200), + .dwMaxBitRate = cpu_to_le32(29491200), + .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), + .dwDefaultFrameInterval = cpu_to_le32(5000000), + .bFrameIntervalType = 1, + .dwFrameInterval[0] = cpu_to_le32(5000000), +}; + +static const struct uvc_format_mjpeg uvc_format_mjpg = { + .bLength = UVC_DT_FORMAT_MJPEG_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FORMAT_MJPEG, + .bFormatIndex = 2, + .bNumFrameDescriptors = 2, + .bmFlags = 0, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterfaceFlags = 0, + .bCopyProtect = 0, +}; + +DECLARE_UVC_FRAME_MJPEG(1); +DECLARE_UVC_FRAME_MJPEG(3); + +static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { + .bLength = UVC_DT_FRAME_MJPEG_SIZE(3), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FRAME_MJPEG, + .bFrameIndex = 1, + .bmCapabilities = 0, + .wWidth = cpu_to_le16(640), + .wHeight = cpu_to_le16(360), + .dwMinBitRate = cpu_to_le32(18432000), + .dwMaxBitRate = cpu_to_le32(55296000), + .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), + .dwDefaultFrameInterval = cpu_to_le32(666666), + .bFrameIntervalType = 3, + .dwFrameInterval[0] = cpu_to_le32(666666), + .dwFrameInterval[1] = cpu_to_le32(1000000), + .dwFrameInterval[2] = cpu_to_le32(5000000), +}; + +static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { + .bLength = UVC_DT_FRAME_MJPEG_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_FRAME_MJPEG, + .bFrameIndex = 2, + .bmCapabilities = 0, + .wWidth = cpu_to_le16(1280), + .wHeight = cpu_to_le16(720), + .dwMinBitRate = cpu_to_le32(29491200), + .dwMaxBitRate = cpu_to_le32(29491200), + .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), + .dwDefaultFrameInterval = cpu_to_le32(5000000), + .bFrameIntervalType = 1, + .dwFrameInterval[0] = cpu_to_le32(5000000), +}; + +static const struct uvc_color_matching_descriptor uvc_color_matching = { + .bLength = UVC_DT_COLOR_MATCHING_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_DT_COLOR_MATCHING, + .bColorPrimaries = 1, + .bTransferCharacteristics = 1, + .bMatrixCoefficients = 4, +}; + +static const struct uvc_descriptor_header * const uvc_control_cls[] = { + (const struct uvc_descriptor_header *) &uvc_control_header, + (const struct uvc_descriptor_header *) &uvc_camera_terminal, + (const struct uvc_descriptor_header *) &uvc_processing, + (const struct uvc_descriptor_header *) &uvc_output_terminal, + NULL, +}; + +static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { + (const struct uvc_descriptor_header *) &uvc_input_header, + (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, + (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, + (const struct uvc_descriptor_header *) &uvc_color_matching, + NULL, +}; + +static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { + (const struct uvc_descriptor_header *) &uvc_input_header, + (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, + (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, + (const struct uvc_descriptor_header *) &uvc_color_matching, + NULL, +}; + +/* -------------------------------------------------------------------------- + * USB configuration + */ + +static int __init +webcam_config_bind(struct usb_configuration *c) +{ + return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls, + uvc_hs_streaming_cls); +} + +static struct usb_configuration webcam_config_driver = { + .label = webcam_config_label, + .bind = webcam_config_bind, + .bConfigurationValue = 1, + .iConfiguration = 0, /* dynamic */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, +}; + +static int /* __init_or_exit */ +webcam_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} + +static int __init +webcam_bind(struct usb_composite_dev *cdev) +{ + int ret; + + /* Allocate string descriptor numbers ... note that string contents + * can be overridden by the composite_dev glue. + */ + if ((ret = usb_string_id(cdev)) < 0) + goto error; + webcam_strings[STRING_MANUFACTURER_IDX].id = ret; + webcam_device_descriptor.iManufacturer = ret; + + if ((ret = usb_string_id(cdev)) < 0) + goto error; + webcam_strings[STRING_PRODUCT_IDX].id = ret; + webcam_device_descriptor.iProduct = ret; + + if ((ret = usb_string_id(cdev)) < 0) + goto error; + webcam_strings[STRING_DESCRIPTION_IDX].id = ret; + webcam_config_driver.iConfiguration = ret; + + /* Register our configuration. */ + if ((ret = usb_add_config(cdev, &webcam_config_driver)) < 0) + goto error; + + INFO(cdev, "Webcam Video Gadget\n"); + return 0; + +error: + webcam_unbind(cdev); + return ret; +} + +/* -------------------------------------------------------------------------- + * Driver + */ + +static struct usb_composite_driver webcam_driver = { + .name = "g_webcam", + .dev = &webcam_device_descriptor, + .strings = webcam_device_strings, + .bind = webcam_bind, + .unbind = webcam_unbind, +}; + +static int __init +webcam_init(void) +{ + return usb_composite_register(&webcam_driver); +} + +static void __exit +webcam_cleanup(void) +{ + usb_composite_unregister(&webcam_driver); +} + +module_init(webcam_init); +module_exit(webcam_cleanup); + +MODULE_AUTHOR("Laurent Pinchart"); +MODULE_DESCRIPTION("Webcam Video Gadget"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1.0"); + -- cgit v1.2.3-58-ga151 From 0ba169aff9181389f30f225ad92e113eeb2290b9 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 5 May 2010 15:26:17 -0400 Subject: USB: simplify usb_sg_init() This patch (as1377) simplifies the code in usb_sg_init(), without changing its functionality. It also removes a couple of unused fields from the usb_sg_request structure. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 93 +++++++++++++++++++--------------------------- include/linux/usb.h | 2 - 2 files changed, 38 insertions(+), 57 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 63919b8abee1..a73e08fdab36 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -371,79 +371,64 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, spin_lock_init(&io->lock); io->dev = dev; io->pipe = pipe; - io->sg = sg; - io->nents = nents; - io->entries = nents; - /* initialize all the urbs we'll use */ if (dev->bus->sg_tablesize > 0) { - io->urbs = kmalloc(sizeof *io->urbs, mem_flags); use_sg = true; + io->entries = 1; } else { - io->urbs = kmalloc(io->entries * sizeof *io->urbs, mem_flags); use_sg = false; + io->entries = nents; } + + /* initialize all the urbs we'll use */ + io->urbs = kmalloc(io->entries * sizeof *io->urbs, mem_flags); if (!io->urbs) goto nomem; - urb_flags = 0; + urb_flags = URB_NO_INTERRUPT; if (usb_pipein(pipe)) urb_flags |= URB_SHORT_NOT_OK; - if (use_sg) { - io->urbs[0] = usb_alloc_urb(0, mem_flags); - if (!io->urbs[0]) { - io->entries = 0; - goto nomem; - } - - io->urbs[0]->dev = NULL; - io->urbs[0]->pipe = pipe; - io->urbs[0]->interval = period; - io->urbs[0]->transfer_flags = urb_flags; + for_each_sg(sg, sg, io->entries, i) { + struct urb *urb; + unsigned len; - io->urbs[0]->complete = sg_complete; - io->urbs[0]->context = io; - - /* A length of zero means transfer the whole sg list */ - io->urbs[0]->transfer_buffer_length = length; - if (length == 0) { - for_each_sg(sg, sg, io->entries, i) { - io->urbs[0]->transfer_buffer_length += - sg->length; - } + urb = usb_alloc_urb(0, mem_flags); + if (!urb) { + io->entries = i; + goto nomem; } - io->urbs[0]->sg = sg; - io->urbs[0]->num_sgs = io->entries; - io->entries = 1; - } else { - urb_flags |= URB_NO_INTERRUPT; - for_each_sg(sg, sg, io->entries, i) { - unsigned len; - - io->urbs[i] = usb_alloc_urb(0, mem_flags); - if (!io->urbs[i]) { - io->entries = i; - goto nomem; + io->urbs[i] = urb; + + urb->dev = NULL; + urb->pipe = pipe; + urb->interval = period; + urb->transfer_flags = urb_flags; + urb->complete = sg_complete; + urb->context = io; + urb->sg = sg; + + if (use_sg) { + /* There is no single transfer buffer */ + urb->transfer_buffer = NULL; + urb->num_sgs = nents; + + /* A length of zero means transfer the whole sg list */ + len = length; + if (len == 0) { + for_each_sg(sg, sg, nents, i) + len += sg->length; } - - io->urbs[i]->dev = NULL; - io->urbs[i]->pipe = pipe; - io->urbs[i]->interval = period; - io->urbs[i]->transfer_flags = urb_flags; - - io->urbs[i]->complete = sg_complete; - io->urbs[i]->context = io; - + } else { /* * Some systems can't use DMA; they use PIO instead. * For their sakes, transfer_buffer is set whenever * possible. */ if (!PageHighMem(sg_page(sg))) - io->urbs[i]->transfer_buffer = sg_virt(sg); + urb->transfer_buffer = sg_virt(sg); else - io->urbs[i]->transfer_buffer = NULL; + urb->transfer_buffer = NULL; len = sg->length; if (length) { @@ -452,12 +437,10 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (length == 0) io->entries = i + 1; } - io->urbs[i]->transfer_buffer_length = len; - - io->urbs[i]->sg = sg; } - io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; + urb->transfer_buffer_length = len; } + io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; /* transaction state */ io->count = io->entries; diff --git a/include/linux/usb.h b/include/linux/usb.h index eec9e74f332f..ce07062ebc28 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1469,8 +1469,6 @@ struct usb_sg_request { struct usb_device *dev; int pipe; - struct scatterlist *sg; - int nents; int entries; struct urb **urbs; -- cgit v1.2.3-58-ga151 From e07afd3fb906647d37108206075834f8c670b7e3 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 5 May 2010 11:18:41 +0200 Subject: USB: isp1760: Use resource_size Use the resource_size function instead of manually calculating the resource size. This reduces the chance of introducing off-by-one errors. Signed-off-by: Tobias Klauser Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1760-if.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index 42a094605c92..8f0259eaa2c7 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -36,7 +36,7 @@ static int of_isp1760_probe(struct of_device *dev, struct resource memory; struct of_irq oirq; int virq; - u64 res_len; + resource_size_t res_len; int ret; const unsigned int *prop; unsigned int devflags = 0; @@ -45,13 +45,12 @@ static int of_isp1760_probe(struct of_device *dev, if (ret) return -ENXIO; - res = request_mem_region(memory.start, memory.end - memory.start + 1, - dev_name(&dev->dev)); + res_len = resource_size(&memory); + + res = request_mem_region(memory.start, res_len, dev_name(&dev->dev)); if (!res) return -EBUSY; - res_len = memory.end - memory.start + 1; - if (of_irq_map_one(dp, 0, &oirq)) { ret = -ENODEV; goto release_reg; @@ -92,7 +91,7 @@ static int of_isp1760_probe(struct of_device *dev, return ret; release_reg: - release_mem_region(memory.start, memory.end - memory.start + 1); + release_mem_region(memory.start, res_len); return ret; } -- cgit v1.2.3-58-ga151 From d3901a064cfedf892c00704aa4e51d119f04a65e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 May 2010 23:44:17 +0200 Subject: USB: ftdi_sio: switch to generic write implementation Switch to the generic, multi-urb, write implementation. Note that this will also make it fairly easy to use the generic fifo-based write implementation: simply unset the multi_urb_write flag and modify prepare_write_buffer (or unset if not using a legacy SIO device). This may be desirable for instance on an embedded system where optimal throughput at high baudrates may not be as important as other factors (e.g. no allocations during runtime and less pressure on host stack). Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 191 +++++------------------------------------- 1 file changed, 19 insertions(+), 172 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 6e437f9e4b9b..a41974e17687 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1,6 +1,8 @@ /* * USB FTDI SIO driver * + * Copyright (C) 2009 - 2010 + * Johan Hovold (jhovold@gmail.com) * Copyright (C) 1999 - 2001 * Greg Kroah-Hartman (greg@kroah.com) * Bill Ryder (bryder@sgi.com) @@ -49,8 +51,8 @@ /* * Version Information */ -#define DRIVER_VERSION "v1.5.0" -#define DRIVER_AUTHOR "Greg Kroah-Hartman , Bill Ryder , Kuba Ober , Andreas Mohr" +#define DRIVER_VERSION "v1.6.0" +#define DRIVER_AUTHOR "Greg Kroah-Hartman , Bill Ryder , Kuba Ober , Andreas Mohr, Johan Hovold " #define DRIVER_DESC "USB FTDI Serial Converters Driver" static int debug; @@ -87,9 +89,6 @@ struct ftdi_private { be enabled */ unsigned int latency; /* latency setting in use */ - spinlock_t tx_lock; /* spinlock for transmit state */ - unsigned long tx_outstanding_bytes; - unsigned long tx_outstanding_urbs; unsigned short max_packet_size; struct mutex cfg_lock; /* Avoid mess by parallel calls of config ioctl() and change_speed() */ }; @@ -784,12 +783,9 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port); static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port); static void ftdi_close(struct usb_serial_port *port); static void ftdi_dtr_rts(struct usb_serial_port *port, int on); -static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static int ftdi_write_room(struct tty_struct *tty); -static int ftdi_chars_in_buffer(struct tty_struct *tty); -static void ftdi_write_bulk_callback(struct urb *urb); static void ftdi_process_read_urb(struct urb *urb); +static int ftdi_prepare_write_buffer(struct usb_serial_port *port, + void **dest, size_t size, const void *buf, size_t count); static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int ftdi_tiocmget(struct tty_struct *tty, struct file *file); @@ -816,6 +812,8 @@ static struct usb_serial_driver ftdi_sio_device = { .id_table = id_table_combined, .num_ports = 1, .bulk_in_size = 512, + /* Must modify prepare_write_buffer if multi_urb_write is changed. */ + .multi_urb_write = 1, .probe = ftdi_sio_probe, .port_probe = ftdi_sio_port_probe, .port_remove = ftdi_sio_port_remove, @@ -824,11 +822,8 @@ static struct usb_serial_driver ftdi_sio_device = { .dtr_rts = ftdi_dtr_rts, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, - .write = ftdi_write, - .write_room = ftdi_write_room, - .chars_in_buffer = ftdi_chars_in_buffer, .process_read_urb = ftdi_process_read_urb, - .write_bulk_callback = ftdi_write_bulk_callback, + .prepare_write_buffer = ftdi_prepare_write_buffer, .tiocmget = ftdi_tiocmget, .tiocmset = ftdi_tiocmset, .ioctl = ftdi_ioctl, @@ -844,9 +839,6 @@ static struct usb_serial_driver ftdi_sio_device = { #define HIGH 1 #define LOW 0 -/* number of outstanding urbs to prevent userspace DoS from happening */ -#define URB_UPPER_LIMIT 42 - /* * *************************************************************************** * Utility functions @@ -1536,7 +1528,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) } kref_init(&priv->kref); - spin_lock_init(&priv->tx_lock); mutex_init(&priv->cfg_lock); init_waitqueue_head(&priv->delta_msr_wait); @@ -1761,31 +1752,15 @@ static void ftdi_close(struct usb_serial_port *port) * * The new devices do not require this byte */ -static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) +static int ftdi_prepare_write_buffer(struct usb_serial_port *port, + void **dest, size_t size, const void *src, size_t count) { - struct ftdi_private *priv = usb_get_serial_port_data(port); - struct urb *urb; + struct ftdi_private *priv; unsigned char *buffer; int data_offset ; /* will be 1 for the SIO and 0 otherwise */ - int status; int transfer_size; - unsigned long flags; - - dbg("%s port %d, %d bytes", __func__, port->number, count); - if (count == 0) { - dbg("write request of 0 bytes"); - return 0; - } - spin_lock_irqsave(&priv->tx_lock, flags); - if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) { - spin_unlock_irqrestore(&priv->tx_lock, flags); - dbg("%s - write limit hit", __func__); - return 0; - } - priv->tx_outstanding_urbs++; - spin_unlock_irqrestore(&priv->tx_lock, flags); + priv = usb_get_serial_port_data(port); data_offset = priv->write_offset; dbg("data_offset set to %d", data_offset); @@ -1801,17 +1776,9 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, buffer = kmalloc(transfer_size, GFP_ATOMIC); if (!buffer) { - dev_err(&port->dev, - "%s ran out of kernel memory for urb ...\n", __func__); - count = -ENOMEM; - goto error_no_buffer; - } - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "%s - no more free urbs\n", __func__); - count = -ENOMEM; - goto error_no_urb; + dev_err(&port->dev, "%s - could not allocate buffer\n", + __func__); + return -ENOMEM; } /* Copy data */ @@ -1821,7 +1788,7 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, int user_pktsz = priv->max_packet_size - data_offset; int todo = count; unsigned char *first_byte = buffer; - const unsigned char *current_position = buf; + const unsigned char *current_position = src; while (todo > 0) { if (user_pktsz > todo) @@ -1836,134 +1803,14 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, todo -= user_pktsz; } } else { - /* No control byte required. */ - /* Copy in the data to send */ - memcpy(buffer, buf, count); + memcpy(buffer, src, count); } - usb_serial_debug_data(debug, &port->dev, __func__, - transfer_size, buffer); - - /* fill the buffer and send it */ - usb_fill_bulk_urb(urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - buffer, transfer_size, - ftdi_write_bulk_callback, port); - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, status); - count = status; - goto error; - } else { - spin_lock_irqsave(&priv->tx_lock, flags); - priv->tx_outstanding_bytes += count; - spin_unlock_irqrestore(&priv->tx_lock, flags); - } + *dest = buffer; - /* we are done with this urb, so let the host driver - * really free it when it is finished with it */ - usb_free_urb(urb); - - dbg("%s write returning: %d", __func__, count); - return count; -error: - usb_free_urb(urb); -error_no_urb: - kfree(buffer); -error_no_buffer: - spin_lock_irqsave(&priv->tx_lock, flags); - priv->tx_outstanding_urbs--; - spin_unlock_irqrestore(&priv->tx_lock, flags); return count; } -/* This function may get called when the device is closed */ -static void ftdi_write_bulk_callback(struct urb *urb) -{ - unsigned long flags; - struct usb_serial_port *port = urb->context; - struct ftdi_private *priv; - int data_offset; /* will be 1 for the SIO and 0 otherwise */ - unsigned long countback; - int status = urb->status; - - /* free up the transfer buffer, as usb_free_urb() does not do this */ - kfree(urb->transfer_buffer); - - dbg("%s - port %d", __func__, port->number); - - priv = usb_get_serial_port_data(port); - if (!priv) { - dbg("%s - bad port private data pointer - exiting", __func__); - return; - } - /* account for transferred data */ - countback = urb->transfer_buffer_length; - data_offset = priv->write_offset; - if (data_offset > 0) { - /* Subtract the control bytes */ - countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size)); - } - spin_lock_irqsave(&priv->tx_lock, flags); - --priv->tx_outstanding_urbs; - priv->tx_outstanding_bytes -= countback; - spin_unlock_irqrestore(&priv->tx_lock, flags); - - if (status) { - dbg("nonzero write bulk status received: %d", status); - } - - usb_serial_port_softint(port); -} - -static int ftdi_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct ftdi_private *priv = usb_get_serial_port_data(port); - int room; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->tx_lock, flags); - if (priv->tx_outstanding_urbs < URB_UPPER_LIMIT) { - /* - * We really can take anything the user throws at us - * but let's pick a nice big number to tell the tty - * layer that we have lots of free space - */ - room = 2048; - } else { - room = 0; - } - spin_unlock_irqrestore(&priv->tx_lock, flags); - return room; -} - -static int ftdi_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct ftdi_private *priv = usb_get_serial_port_data(port); - int buffered; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->tx_lock, flags); - buffered = (int)priv->tx_outstanding_bytes; - spin_unlock_irqrestore(&priv->tx_lock, flags); - if (buffered < 0) { - dev_err(&port->dev, "%s outstanding tx bytes is negative!\n", - __func__); - buffered = 0; - } - return buffered; -} - static int ftdi_process_packet(struct tty_struct *tty, struct usb_serial_port *port, struct ftdi_private *priv, char *packet, int len) -- cgit v1.2.3-58-ga151 From e877048417454b0baca5d4a5aceed72a6602c3be Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 May 2010 23:45:01 +0200 Subject: USB: ftdi_sio: clean up SIO write support The original SIO devices require a control byte for every packet written. Clean up the unnecessarily messy implementation of this. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 53 +++++++++++-------------------------------- 1 file changed, 13 insertions(+), 40 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index a41974e17687..f515f32cde68 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -71,10 +71,6 @@ struct ftdi_private { /* the last data state set - needed for doing * a break */ - int write_offset; /* This is the offset in the usb data block to - * write the serial data - it varies between - * devices - */ int flags; /* some ASYNC_xxxx flags are supported */ unsigned long last_dtr_rts; /* saved modem control outputs */ wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ @@ -1279,7 +1275,6 @@ static void ftdi_determine_type(struct usb_serial_port *port) /* Assume it is not the original SIO device for now. */ priv->baud_base = 48000000 / 2; - priv->write_offset = 0; version = le16_to_cpu(udev->descriptor.bcdDevice); interfaces = udev->actconfig->desc.bNumInterfaces; @@ -1321,7 +1316,6 @@ static void ftdi_determine_type(struct usb_serial_port *port) /* Old device. Assume it's the original SIO. */ priv->chip_type = SIO; priv->baud_base = 12000000 / 16; - priv->write_offset = 1; } else if (version < 0x400) { /* Assume it's an FT8U232AM (or FT8U245AM) */ /* (It might be a BM because of the iSerialNumber bug, @@ -1757,50 +1751,29 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, { struct ftdi_private *priv; unsigned char *buffer; - int data_offset ; /* will be 1 for the SIO and 0 otherwise */ - int transfer_size; + int len; priv = usb_get_serial_port_data(port); - data_offset = priv->write_offset; - dbg("data_offset set to %d", data_offset); + len = count; + if (priv->chip_type == SIO && count != 0) + len += ((count - 1) / (priv->max_packet_size - 1)) + 1; - /* Determine total transfer size */ - transfer_size = count; - if (data_offset > 0) { - /* Original sio needs control bytes too... */ - transfer_size += (data_offset * - ((count + (priv->max_packet_size - 1 - data_offset)) / - (priv->max_packet_size - data_offset))); - } - - buffer = kmalloc(transfer_size, GFP_ATOMIC); + buffer = kmalloc(len, GFP_ATOMIC); if (!buffer) { dev_err(&port->dev, "%s - could not allocate buffer\n", __func__); return -ENOMEM; } - /* Copy data */ - if (data_offset > 0) { - /* Original sio requires control byte at start of - each packet. */ - int user_pktsz = priv->max_packet_size - data_offset; - int todo = count; - unsigned char *first_byte = buffer; - const unsigned char *current_position = src; - - while (todo > 0) { - if (user_pktsz > todo) - user_pktsz = todo; - /* Write the control byte at the front of the packet*/ - *first_byte = 1 | ((user_pktsz) << 2); - /* Copy data for packet */ - memcpy(first_byte + data_offset, - current_position, user_pktsz); - first_byte += user_pktsz + data_offset; - current_position += user_pktsz; - todo -= user_pktsz; + if (priv->chip_type == SIO) { + int i, msg_len; + + for (i = 0; i < len; i += priv->max_packet_size) { + msg_len = min_t(int, len - i, priv->max_packet_size) - 1; + buffer[i] = (msg_len << 2) + 1; + memcpy(&buffer[i + 1], src, msg_len); + src += msg_len; } } else { memcpy(buffer, src, count); -- cgit v1.2.3-58-ga151 From 4272568b3dd8dbad36014a107c0fbbef6400c917 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 May 2010 23:45:24 +0200 Subject: USB: aircable: rewrite using generic read and write implementations Kill circular buffers for tx and rx as well as read work thread, and switch to generic kfifo-based write implementation. This is an example of how prepare_write_buffer and process_read_urb can be used to handle protocols with packet headers. Please note the diffstat which shows that the same functionality is now provided using only a tenth of the code (including whitespace and comments, though). Tested-by: Naranjo, Manuel Francisco Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/aircable.c | 500 ++++-------------------------------------- 1 file changed, 47 insertions(+), 453 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index 4fd7af98b1ae..cac5162937b3 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -1,7 +1,9 @@ /* * AIRcable USB Bluetooth Dongle Driver. * + * Copyright (C) 2010 Johan Hovold * Copyright (C) 2006 Manuel Francisco Naranjo (naranjo.manuel@gmail.com) + * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License version 2 as published by the * Free Software Foundation. @@ -42,10 +44,10 @@ * */ +#include #include #include #include -#include #include #include @@ -55,16 +57,12 @@ static int debug; #define AIRCABLE_VID 0x16CA #define AIRCABLE_USB_PID 0x1502 -/* write buffer size defines */ -#define AIRCABLE_BUF_SIZE 2048 - /* Protocol Stuff */ #define HCI_HEADER_LENGTH 0x4 #define TX_HEADER_0 0x20 #define TX_HEADER_1 0x29 #define RX_HEADER_0 0x00 #define RX_HEADER_1 0x20 -#define MAX_HCI_FRAMESIZE 60 #define HCI_COMPLETE_FRAME 64 /* rx_flags */ @@ -74,8 +72,8 @@ static int debug; /* * Version Information */ -#define DRIVER_VERSION "v1.0b2" -#define DRIVER_AUTHOR "Naranjo, Manuel Francisco " +#define DRIVER_VERSION "v2.0" +#define DRIVER_AUTHOR "Naranjo, Manuel Francisco , Johan Hovold " #define DRIVER_DESC "AIRcable USB Driver" /* ID table that will be registered with USB core */ @@ -85,225 +83,19 @@ static const struct usb_device_id id_table[] = { }; MODULE_DEVICE_TABLE(usb, id_table); - -/* Internal Structure */ -struct aircable_private { - spinlock_t rx_lock; /* spinlock for the receive lines */ - struct circ_buf *tx_buf; /* write buffer */ - struct circ_buf *rx_buf; /* read buffer */ - int rx_flags; /* for throttilng */ - struct work_struct rx_work; /* work cue for the receiving line */ - struct usb_serial_port *port; /* USB port with which associated */ -}; - -/* Private methods */ - -/* Circular Buffer Methods, code from ti_usb_3410_5052 used */ -/* - * serial_buf_clear - * - * Clear out all data in the circular buffer. - */ -static void serial_buf_clear(struct circ_buf *cb) -{ - cb->head = cb->tail = 0; -} - -/* - * serial_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ -static struct circ_buf *serial_buf_alloc(void) -{ - struct circ_buf *cb; - cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); - if (cb == NULL) - return NULL; - cb->buf = kmalloc(AIRCABLE_BUF_SIZE, GFP_KERNEL); - if (cb->buf == NULL) { - kfree(cb); - return NULL; - } - serial_buf_clear(cb); - return cb; -} - -/* - * serial_buf_free - * - * Free the buffer and all associated memory. - */ -static void serial_buf_free(struct circ_buf *cb) -{ - kfree(cb->buf); - kfree(cb); -} - -/* - * serial_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ -static int serial_buf_data_avail(struct circ_buf *cb) -{ - return CIRC_CNT(cb->head, cb->tail, AIRCABLE_BUF_SIZE); -} - -/* - * serial_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ -static int serial_buf_put(struct circ_buf *cb, const char *buf, int count) -{ - int c, ret = 0; - while (1) { - c = CIRC_SPACE_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE); - if (count < c) - c = count; - if (c <= 0) - break; - memcpy(cb->buf + cb->head, buf, c); - cb->head = (cb->head + c) & (AIRCABLE_BUF_SIZE-1); - buf += c; - count -= c; - ret = c; - } - return ret; -} - -/* - * serial_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ -static int serial_buf_get(struct circ_buf *cb, char *buf, int count) -{ - int c, ret = 0; - while (1) { - c = CIRC_CNT_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE); - if (count < c) - c = count; - if (c <= 0) - break; - memcpy(buf, cb->buf + cb->tail, c); - cb->tail = (cb->tail + c) & (AIRCABLE_BUF_SIZE-1); - buf += c; - count -= c; - ret = c; - } - return ret; -} - -/* End of circula buffer methods */ - -static void aircable_send(struct usb_serial_port *port) +static int aircable_prepare_write_buffer(struct usb_serial_port *port, + void **dest, size_t size, const void *src, size_t count) { - int count, result; - struct aircable_private *priv = usb_get_serial_port_data(port); - unsigned char *buf; - __le16 *dbuf; - dbg("%s - port %d", __func__, port->number); - if (port->write_urb_busy) - return; - - count = min(serial_buf_data_avail(priv->tx_buf), MAX_HCI_FRAMESIZE); - if (count == 0) - return; - - buf = kzalloc(count + HCI_HEADER_LENGTH, GFP_ATOMIC); - if (!buf) { - dev_err(&port->dev, "%s- kzalloc(%d) failed.\n", - __func__, count + HCI_HEADER_LENGTH); - return; - } + unsigned char *buf = *dest; + count = kfifo_out_locked(&port->write_fifo, buf + HCI_HEADER_LENGTH, + size - HCI_HEADER_LENGTH, &port->lock); buf[0] = TX_HEADER_0; buf[1] = TX_HEADER_1; - dbuf = (__le16 *)&buf[2]; - *dbuf = cpu_to_le16((u16)count); - serial_buf_get(priv->tx_buf, buf + HCI_HEADER_LENGTH, - MAX_HCI_FRAMESIZE); - - memcpy(port->write_urb->transfer_buffer, buf, - count + HCI_HEADER_LENGTH); - - kfree(buf); - port->write_urb_busy = 1; - usb_serial_debug_data(debug, &port->dev, __func__, - count + HCI_HEADER_LENGTH, - port->write_urb->transfer_buffer); - port->write_urb->transfer_buffer_length = count + HCI_HEADER_LENGTH; - port->write_urb->dev = port->serial->dev; - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - - if (result) { - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - port->write_urb_busy = 0; - } - - schedule_work(&port->work); -} - -static void aircable_read(struct work_struct *work) -{ - struct aircable_private *priv = - container_of(work, struct aircable_private, rx_work); - struct usb_serial_port *port = priv->port; - struct tty_struct *tty; - unsigned char *data; - int count; - if (priv->rx_flags & THROTTLED) { - if (priv->rx_flags & ACTUALLY_THROTTLED) - schedule_work(&priv->rx_work); - return; - } - - /* By now I will flush data to the tty in packages of no more than - * 64 bytes, to ensure I do not get throttled. - * Ask USB mailing list for better aproach. - */ - tty = tty_port_tty_get(&port->port); - - if (!tty) { - schedule_work(&priv->rx_work); - dev_err(&port->dev, "%s - No tty available\n", __func__); - return ; - } - - count = min(64, serial_buf_data_avail(priv->rx_buf)); - - if (count <= 0) - goto out; /* We have finished sending everything. */ + put_unaligned_le16(count, &buf[2]); - tty_prepare_flip_string(tty, &data, count); - if (!data) { - dev_err(&port->dev, "%s- kzalloc(%d) failed.", - __func__, count); - goto out; - } - - serial_buf_get(priv->rx_buf, data, count); - - tty_flip_buffer_push(tty); - - if (serial_buf_data_avail(priv->rx_buf)) - schedule_work(&priv->rx_work); -out: - tty_kref_put(tty); - return; + return count; } -/* End of private methods */ static int aircable_probe(struct usb_serial *serial, const struct usb_device_id *id) @@ -330,247 +122,50 @@ static int aircable_probe(struct usb_serial *serial, return 0; } -static int aircable_attach(struct usb_serial *serial) -{ - struct usb_serial_port *port = serial->port[0]; - struct aircable_private *priv; - - priv = kzalloc(sizeof(struct aircable_private), GFP_KERNEL); - if (!priv) { - dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__, - sizeof(struct aircable_private)); - return -ENOMEM; - } - - /* Allocation of Circular Buffers */ - priv->tx_buf = serial_buf_alloc(); - if (priv->tx_buf == NULL) { - kfree(priv); - return -ENOMEM; - } - - priv->rx_buf = serial_buf_alloc(); - if (priv->rx_buf == NULL) { - kfree(priv->tx_buf); - kfree(priv); - return -ENOMEM; - } - - priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); - priv->port = port; - INIT_WORK(&priv->rx_work, aircable_read); - - usb_set_serial_port_data(serial->port[0], priv); - - return 0; -} - -static void aircable_release(struct usb_serial *serial) -{ - - struct usb_serial_port *port = serial->port[0]; - struct aircable_private *priv = usb_get_serial_port_data(port); - - dbg("%s", __func__); - - if (priv) { - serial_buf_free(priv->tx_buf); - serial_buf_free(priv->rx_buf); - kfree(priv); - } -} - -static int aircable_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct aircable_private *priv = usb_get_serial_port_data(port); - return serial_buf_data_avail(priv->tx_buf); -} - -static int aircable_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *source, int count) +static int aircable_process_packet(struct tty_struct *tty, + struct usb_serial_port *port, int has_headers, + char *packet, int len) { - struct aircable_private *priv = usb_get_serial_port_data(port); - int temp; - - dbg("%s - port %d, %d bytes", __func__, port->number, count); - - usb_serial_debug_data(debug, &port->dev, __func__, count, source); - - if (!count) { - dbg("%s - write request of 0 bytes", __func__); - return count; + if (has_headers) { + len -= HCI_HEADER_LENGTH; + packet += HCI_HEADER_LENGTH; } - - temp = serial_buf_put(priv->tx_buf, source, count); - - aircable_send(port); - - if (count > AIRCABLE_BUF_SIZE) - count = AIRCABLE_BUF_SIZE; - - return count; - -} - -static void aircable_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - int status = urb->status; - int result; - - dbg("%s - urb status: %d", __func__ , status); - - /* This has been taken from cypress_m8.c cypress_write_int_callback */ - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", - __func__, status); - port->write_urb_busy = 0; - return; - default: - /* error in the urb, so we have to resubmit it */ - dbg("%s - Overflow in write", __func__); - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - port->write_urb->transfer_buffer_length = 1; - port->write_urb->dev = port->serial->dev; - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - dev_err(&urb->dev->dev, - "%s - failed resubmitting write urb, error %d\n", - __func__, result); - else - return; + if (len <= 0) { + dbg("%s - malformed packet", __func__); + return 0; } - port->write_urb_busy = 0; + tty_insert_flip_string(tty, packet, len); - aircable_send(port); + return len; } -static void aircable_read_bulk_callback(struct urb *urb) +static void aircable_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct aircable_private *priv = usb_get_serial_port_data(port); + char *data = (char *)urb->transfer_buffer; struct tty_struct *tty; - unsigned long no_packages, remaining, package_length, i; - int result, shift = 0; - unsigned char *temp; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - urb status = %d", __func__, status); - if (status == -EPROTO) { - dbg("%s - caught -EPROTO, resubmitting the urb", - __func__); - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - aircable_read_bulk_callback, port); - - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&urb->dev->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - return; - } - dbg("%s - unable to handle the error, exiting.", __func__); - return; - } - - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, urb->transfer_buffer); + int has_headers; + int count; + int len; + int i; tty = tty_port_tty_get(&port->port); - if (tty && urb->actual_length) { - if (urb->actual_length <= 2) { - /* This is an incomplete package */ - serial_buf_put(priv->rx_buf, urb->transfer_buffer, - urb->actual_length); - } else { - temp = urb->transfer_buffer; - if (temp[0] == RX_HEADER_0) - shift = HCI_HEADER_LENGTH; - - remaining = urb->actual_length; - no_packages = urb->actual_length / (HCI_COMPLETE_FRAME); - - if (urb->actual_length % HCI_COMPLETE_FRAME != 0) - no_packages++; + if (!tty) + return; - for (i = 0; i < no_packages; i++) { - if (remaining > (HCI_COMPLETE_FRAME)) - package_length = HCI_COMPLETE_FRAME; - else - package_length = remaining; - remaining -= package_length; + has_headers = (urb->actual_length > 2 && data[0] == RX_HEADER_0); - serial_buf_put(priv->rx_buf, - urb->transfer_buffer + shift + - (HCI_COMPLETE_FRAME) * (i), - package_length - shift); - } - } - aircable_read(&priv->rx_work); + count = 0; + for (i = 0; i < urb->actual_length; i += HCI_COMPLETE_FRAME) { + len = min_t(int, urb->actual_length - i, HCI_COMPLETE_FRAME); + count += aircable_process_packet(tty, port, has_headers, + &data[i], len); } - tty_kref_put(tty); - - /* Schedule the next read */ - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - aircable_read_bulk_callback, port); - - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result && result != -EPERM) - dev_err(&urb->dev->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); -} - -/* Based on ftdi_sio.c throttle */ -static void aircable_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct aircable_private *priv = usb_get_serial_port_data(port); - - dbg("%s - port %d", __func__, port->number); - spin_lock_irq(&priv->rx_lock); - priv->rx_flags |= THROTTLED; - spin_unlock_irq(&priv->rx_lock); -} - -/* Based on ftdi_sio.c unthrottle */ -static void aircable_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct aircable_private *priv = usb_get_serial_port_data(port); - int actually_throttled; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irq(&priv->rx_lock); - actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; - priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); - spin_unlock_irq(&priv->rx_lock); - - if (actually_throttled) - schedule_work(&priv->rx_work); + if (count) + tty_flip_buffer_push(tty); + tty_kref_put(tty); } static struct usb_driver aircable_driver = { @@ -589,15 +184,14 @@ static struct usb_serial_driver aircable_device = { .usb_driver = &aircable_driver, .id_table = id_table, .num_ports = 1, - .attach = aircable_attach, + .bulk_out_size = HCI_COMPLETE_FRAME, + /* Must modify prepare_write_buffer if multi_urb_write is changed. */ + .multi_urb_write = 0, .probe = aircable_probe, - .release = aircable_release, - .write = aircable_write, - .write_room = aircable_write_room, - .write_bulk_callback = aircable_write_bulk_callback, - .read_bulk_callback = aircable_read_bulk_callback, - .throttle = aircable_throttle, - .unthrottle = aircable_unthrottle, + .process_read_urb = aircable_process_read_urb, + .prepare_write_buffer = aircable_prepare_write_buffer, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, }; static int __init aircable_init(void) -- cgit v1.2.3-58-ga151 From 27c7acf22047fbe4ec4cc36b7c2610dba227697c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 May 2010 23:57:37 +0200 Subject: USB: serial: reimplement generic fifo-based writes Reimplement fifo-based writes in the generic driver using a multiple pre-allocated urb scheme. In contrast to multi-urb writes, no allocations (of urbs or buffers) are made during run-time and there is less pressure on the host stack queues as currently only two urbs are used (implementation is generic and can handle more than two urbs as well, though). Initial tests using ftdi_sio show that the implementation achieves the same (maximum) throughput at high baudrates as multi-urb writes. The CPU usage is much lower than for multi-urb writes for small write requests and only slightly higher for large (e.g. 2k) requests (due to extra copy via fifo?). Also outperforms multi-urb writes for small write requests on an embedded arm-9 system, where multi-urb writes are CPU-bound at high baudrates (perf reveals that a lot of time is spent in the host stack enqueue function -- could perhaps be a bug as well). Keeping the original write_urb, buffer and flag for now as there are other drivers depending on them. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 59 +++++++++++++++++++++++++++-------------- drivers/usb/serial/usb-serial.c | 33 +++++++++++++++++++++++ include/linux/usb/serial.h | 12 +++++++++ 3 files changed, 84 insertions(+), 20 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 1a134f9c64f3..3ae17840175c 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -1,6 +1,7 @@ /* * USB Serial Converter Generic functions * + * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com) * * This program is free software; you can redistribute it and/or @@ -143,6 +144,7 @@ static void generic_cleanup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; unsigned long flags; + int i; dbg("%s - port %d", __func__, port->number); @@ -150,6 +152,8 @@ static void generic_cleanup(struct usb_serial_port *port) /* shutdown any bulk transfers that might be going on */ if (port->bulk_out_size) { usb_kill_urb(port->write_urb); + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) + usb_kill_urb(port->write_urbs[i]); spin_lock_irqsave(&port->lock, flags); kfifo_reset_out(&port->write_fifo); @@ -258,46 +262,56 @@ err_urb: * usb_serial_generic_write_start - kick off an URB write * @port: Pointer to the &struct usb_serial_port data * - * Returns the number of bytes queued on success. This will be zero if there - * was nothing to send. Otherwise, it returns a negative errno value + * Returns zero on success, or a negative errno value */ static int usb_serial_generic_write_start(struct usb_serial_port *port) { - int result; - int count; + struct urb *urb; + int count, result; unsigned long flags; + int i; + if (test_and_set_bit_lock(USB_SERIAL_WRITE_BUSY, &port->flags)) + return 0; +retry: spin_lock_irqsave(&port->lock, flags); - if (port->write_urb_busy || !kfifo_len(&port->write_fifo)) { + if (!port->write_urbs_free || !kfifo_len(&port->write_fifo)) { + clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags); spin_unlock_irqrestore(&port->lock, flags); return 0; } - port->write_urb_busy = 1; + i = (int)find_first_bit(&port->write_urbs_free, + ARRAY_SIZE(port->write_urbs)); spin_unlock_irqrestore(&port->lock, flags); + urb = port->write_urbs[i]; count = port->serial->type->prepare_write_buffer(port, - &port->write_urb->transfer_buffer, - port->bulk_out_size, NULL, 0); - usb_serial_debug_data(debug, &port->dev, __func__, - count, port->write_urb->transfer_buffer); - port->write_urb->transfer_buffer_length = count; - - /* send the data out the bulk port */ - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); + &urb->transfer_buffer, + port->bulk_out_size, NULL, 0); + urb->transfer_buffer_length = count; + usb_serial_debug_data(debug, &port->dev, __func__, count, + urb->transfer_buffer); + result = usb_submit_urb(urb, GFP_ATOMIC); if (result) { dev_err(&port->dev, "%s - error submitting urb: %d\n", __func__, result); - /* don't have to grab the lock here, as we will - retry if != 0 */ - port->write_urb_busy = 0; + clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags); return result; } + clear_bit(i, &port->write_urbs_free); spin_lock_irqsave(&port->lock, flags); port->tx_bytes += count; spin_unlock_irqrestore(&port->lock, flags); - return count; + /* Try sending off another urb, unless in irq context (in which case + * there will be no free urb). */ + if (!in_irq()) + goto retry; + + clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags); + + return 0; } /** @@ -461,6 +475,7 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) unsigned long flags; struct usb_serial_port *port = urb->context; int status = urb->status; + int i; dbg("%s - port %d", __func__, port->number); @@ -472,9 +487,13 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) port->tx_urbs--; spin_unlock_irqrestore(&port->lock, flags); } else { + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) + if (port->write_urbs[i] == urb) + break; + spin_lock_irqsave(&port->lock, flags); port->tx_bytes -= urb->transfer_buffer_length; - port->write_urb_busy = 0; + set_bit(i, &port->write_urbs_free); spin_unlock_irqrestore(&port->lock, flags); if (status) { @@ -576,7 +595,7 @@ int usb_serial_generic_resume(struct usb_serial *serial) c++; } - if (port->write_urb) { + if (port->bulk_out_size) { r = usb_serial_generic_write_start(port); if (r < 0) c++; diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 8249fd8381fb..941c2d409f85 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -548,8 +548,12 @@ static void usb_serial_port_work(struct work_struct *work) static void kill_traffic(struct usb_serial_port *port) { + int i; + usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) + usb_kill_urb(port->write_urbs[i]); /* * This is tricky. * Some drivers submit the read_urb in the @@ -568,6 +572,7 @@ static void kill_traffic(struct usb_serial_port *port) static void port_release(struct device *dev) { struct usb_serial_port *port = to_usb_serial_port(dev); + int i; dbg ("%s - %s", __func__, dev_name(dev)); @@ -582,6 +587,10 @@ static void port_release(struct device *dev) usb_free_urb(port->write_urb); usb_free_urb(port->interrupt_in_urb); usb_free_urb(port->interrupt_out_urb); + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) { + usb_free_urb(port->write_urbs[i]); + kfree(port->bulk_out_buffers[i]); + } kfifo_free(&port->write_fifo); kfree(port->bulk_in_buffer); kfree(port->bulk_out_buffer); @@ -920,6 +929,8 @@ int usb_serial_probe(struct usb_interface *interface, } for (i = 0; i < num_bulk_out; ++i) { + int j; + endpoint = bulk_out_endpoint[i]; port = serial->port[i]; port->write_urb = usb_alloc_urb(0, GFP_KERNEL); @@ -945,6 +956,28 @@ int usb_serial_probe(struct usb_interface *interface, endpoint->bEndpointAddress), port->bulk_out_buffer, buffer_size, serial->type->write_bulk_callback, port); + for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) { + set_bit(j, &port->write_urbs_free); + port->write_urbs[j] = usb_alloc_urb(0, GFP_KERNEL); + if (!port->write_urbs[j]) { + dev_err(&interface->dev, + "No free urbs available\n"); + goto probe_error; + } + port->bulk_out_buffers[j] = kmalloc(buffer_size, + GFP_KERNEL); + if (!port->bulk_out_buffers[j]) { + dev_err(&interface->dev, + "Couldn't allocate bulk_out_buffer\n"); + goto probe_error; + } + usb_fill_bulk_urb(port->write_urbs[j], dev, + usb_sndbulkpipe(dev, + endpoint->bEndpointAddress), + port->bulk_out_buffers[j], buffer_size, + serial->type->write_bulk_callback, + port); + } } if (serial->type->read_int_callback) { diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index a4c99ea390e7..70b6d6b28997 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -35,6 +35,9 @@ enum port_dev_state { PORT_UNREGISTERING, }; +/* USB serial flags */ +#define USB_SERIAL_WRITE_BUSY 0 + /** * usb_serial_port: structure for the specific ports of a device. * @serial: pointer back to the struct usb_serial owner of this port. @@ -60,10 +63,14 @@ enum port_dev_state { * @write_urb: pointer to the bulk out struct urb for this port. * @write_fifo: kfifo used to buffer outgoing data * @write_urb_busy: port`s writing status + * @bulk_out_buffers: pointers to the bulk out buffers for this port + * @write_urbs: pointers to the bulk out urbs for this port + * @write_urbs_free: status bitmap the for bulk out urbs * @tx_bytes: number of bytes currently in host stack queues * @tx_urbs: number of urbs currently in host stack queues * @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this * port. + * @flags: usb serial port flags * @write_wait: a wait_queue_head_t used by the port. * @work: work queue entry for the line discipline waking up. * @throttled: nonzero if the read urb is inactive to throttle the device @@ -98,11 +105,16 @@ struct usb_serial_port { struct urb *write_urb; struct kfifo write_fifo; int write_urb_busy; + + unsigned char *bulk_out_buffers[2]; + struct urb *write_urbs[2]; + unsigned long write_urbs_free; __u8 bulk_out_endpointAddress; int tx_bytes; int tx_urbs; + unsigned long flags; wait_queue_head_t write_wait; struct work_struct work; char throttled; -- cgit v1.2.3-58-ga151 From c23e5fc1f7dba228558b4a46e68f7af89515b13c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 5 May 2010 23:58:13 +0200 Subject: USB: serial: remove multi-urb write from generic driver Remove multi-urb write from the generic driver and simplify the prepare_write_buffer prototype: int (*prepare_write_buffer)(struct usb_serial_port *port, void *dest, size_t size); The default implementation simply fills dest with data from port write fifo but drivers can override it if they need to process the outgoing data (e.g. add headers). Turn ftdi_sio into a generic fifo-based driver, which lowers CPU usage significantly for small writes while retaining maximum throughput. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/aircable.c | 7 +- drivers/usb/serial/ftdi_sio.c | 59 ++++++----------- drivers/usb/serial/generic.c | 150 +++++++----------------------------------- include/linux/usb/serial.h | 8 +-- 4 files changed, 48 insertions(+), 176 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index cac5162937b3..8a990a763c21 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -84,9 +84,10 @@ static const struct usb_device_id id_table[] = { MODULE_DEVICE_TABLE(usb, id_table); static int aircable_prepare_write_buffer(struct usb_serial_port *port, - void **dest, size_t size, const void *src, size_t count) + void *dest, size_t size) { - unsigned char *buf = *dest; + int count; + unsigned char *buf = dest; count = kfifo_out_locked(&port->write_fifo, buf + HCI_HEADER_LENGTH, size - HCI_HEADER_LENGTH, &port->lock); @@ -185,8 +186,6 @@ static struct usb_serial_driver aircable_device = { .id_table = id_table, .num_ports = 1, .bulk_out_size = HCI_COMPLETE_FRAME, - /* Must modify prepare_write_buffer if multi_urb_write is changed. */ - .multi_urb_write = 0, .probe = aircable_probe, .process_read_urb = aircable_process_read_urb, .prepare_write_buffer = aircable_prepare_write_buffer, diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index f515f32cde68..14f7a34d614c 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -781,7 +781,7 @@ static void ftdi_close(struct usb_serial_port *port); static void ftdi_dtr_rts(struct usb_serial_port *port, int on); static void ftdi_process_read_urb(struct urb *urb); static int ftdi_prepare_write_buffer(struct usb_serial_port *port, - void **dest, size_t size, const void *buf, size_t count); + void *dest, size_t size); static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int ftdi_tiocmget(struct tty_struct *tty, struct file *file); @@ -808,8 +808,7 @@ static struct usb_serial_driver ftdi_sio_device = { .id_table = id_table_combined, .num_ports = 1, .bulk_in_size = 512, - /* Must modify prepare_write_buffer if multi_urb_write is changed. */ - .multi_urb_write = 1, + .bulk_out_size = 256, .probe = ftdi_sio_probe, .port_probe = ftdi_sio_port_probe, .port_remove = ftdi_sio_port_remove, @@ -1531,15 +1530,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) quirk->port_probe(priv); priv->port = port; - - /* Free port's existing write urb and transfer buffer. */ - if (port->write_urb) { - usb_free_urb(port->write_urb); - port->write_urb = NULL; - } - kfree(port->bulk_out_buffer); - port->bulk_out_buffer = NULL; - usb_set_serial_port_data(port, priv); ftdi_determine_type(port); @@ -1734,8 +1724,7 @@ static void ftdi_close(struct usb_serial_port *port) dbg("%s", __func__); - /* shutdown our bulk read */ - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); kref_put(&priv->kref, ftdi_sio_priv_release); } @@ -1747,40 +1736,34 @@ static void ftdi_close(struct usb_serial_port *port) * The new devices do not require this byte */ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, - void **dest, size_t size, const void *src, size_t count) + void *dest, size_t size) { struct ftdi_private *priv; - unsigned char *buffer; - int len; + int count; + unsigned long flags; priv = usb_get_serial_port_data(port); - len = count; - if (priv->chip_type == SIO && count != 0) - len += ((count - 1) / (priv->max_packet_size - 1)) + 1; - - buffer = kmalloc(len, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "%s - could not allocate buffer\n", - __func__); - return -ENOMEM; - } - if (priv->chip_type == SIO) { - int i, msg_len; - - for (i = 0; i < len; i += priv->max_packet_size) { - msg_len = min_t(int, len - i, priv->max_packet_size) - 1; - buffer[i] = (msg_len << 2) + 1; - memcpy(&buffer[i + 1], src, msg_len); - src += msg_len; + unsigned char *buffer = dest; + int i, len, c; + + count = 0; + spin_lock_irqsave(&port->lock, flags); + for (i = 0; i < size - 1; i += priv->max_packet_size) { + len = min_t(int, size - i, priv->max_packet_size) - 1; + buffer[i] = (len << 2) + 1; + c = kfifo_out(&port->write_fifo, &buffer[i + 1], len); + if (!c) + break; + count += c + 1; } + spin_unlock_irqrestore(&port->lock, flags); } else { - memcpy(buffer, src, count); + count = kfifo_out_locked(&port->write_fifo, dest, size, + &port->lock); } - *dest = buffer; - return count; } diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 3ae17840175c..fcd30b841559 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -26,8 +26,6 @@ static int debug; -#define MAX_TX_URBS 40 - #ifdef CONFIG_USB_SERIAL_GENERIC static int generic_probe(struct usb_interface *interface, @@ -172,90 +170,9 @@ void usb_serial_generic_close(struct usb_serial_port *port) EXPORT_SYMBOL_GPL(usb_serial_generic_close); int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, - void **dest, size_t size, const void *src, size_t count) + void *dest, size_t size) { - if (!*dest) { - size = count; - *dest = kmalloc(count, GFP_ATOMIC); - if (!*dest) { - dev_err(&port->dev, "%s - could not allocate buffer\n", - __func__); - return -ENOMEM; - } - } - if (src) { - count = size; - memcpy(*dest, src, size); - } else { - count = kfifo_out_locked(&port->write_fifo, *dest, size, - &port->lock); - } - return count; -} -EXPORT_SYMBOL_GPL(usb_serial_generic_prepare_write_buffer); - -static int usb_serial_multi_urb_write(struct tty_struct *tty, - struct usb_serial_port *port, const unsigned char *buf, int count) -{ - unsigned long flags; - struct urb *urb; - void *buffer; - int status; - - spin_lock_irqsave(&port->lock, flags); - if (port->tx_urbs == MAX_TX_URBS) { - spin_unlock_irqrestore(&port->lock, flags); - dbg("%s - write limit hit", __func__); - return 0; - } - port->tx_urbs++; - spin_unlock_irqrestore(&port->lock, flags); - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "%s - no free urbs available\n", __func__); - status = -ENOMEM; - goto err_urb; - } - - buffer = NULL; - count = min_t(int, count, PAGE_SIZE); - count = port->serial->type->prepare_write_buffer(port, &buffer, 0, - buf, count); - if (count < 0) { - status = count; - goto err_buf; - } - usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); - usb_fill_bulk_urb(urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - buffer, count, - port->serial->type->write_bulk_callback, port); - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, "%s - error submitting urb: %d\n", - __func__, status); - goto err; - } - spin_lock_irqsave(&port->lock, flags); - port->tx_bytes += urb->transfer_buffer_length; - spin_unlock_irqrestore(&port->lock, flags); - - usb_free_urb(urb); - - return count; -err: - kfree(buffer); -err_buf: - usb_free_urb(urb); -err_urb: - spin_lock_irqsave(&port->lock, flags); - port->tx_urbs--; - spin_unlock_irqrestore(&port->lock, flags); - - return status; + return kfifo_out_locked(&port->write_fifo, dest, size, &port->lock); } /** @@ -286,8 +203,8 @@ retry: urb = port->write_urbs[i]; count = port->serial->type->prepare_write_buffer(port, - &urb->transfer_buffer, - port->bulk_out_size, NULL, 0); + urb->transfer_buffer, + port->bulk_out_size); urb->transfer_buffer_length = count; usb_serial_debug_data(debug, &port->dev, __func__, count, urb->transfer_buffer); @@ -328,7 +245,6 @@ retry: int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { - struct usb_serial *serial = port->serial; int result; dbg("%s - port %d", __func__, port->number); @@ -340,23 +256,18 @@ int usb_serial_generic_write(struct tty_struct *tty, if (!count) return 0; - if (serial->type->multi_urb_write) - return usb_serial_multi_urb_write(tty, port, buf, count); - count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock); result = usb_serial_generic_write_start(port); + if (result) + return result; - if (result >= 0) - result = count; - - return result; + return count; } EXPORT_SYMBOL_GPL(usb_serial_generic_write); int usb_serial_generic_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; unsigned long flags; int room; @@ -366,10 +277,7 @@ int usb_serial_generic_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&port->lock, flags); - if (serial->type->multi_urb_write) - room = (MAX_TX_URBS - port->tx_urbs) * PAGE_SIZE; - else - room = kfifo_avail(&port->write_fifo); + room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, room); @@ -379,7 +287,6 @@ int usb_serial_generic_write_room(struct tty_struct *tty) int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; unsigned long flags; int chars; @@ -389,10 +296,7 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&port->lock, flags); - if (serial->type->multi_urb_write) - chars = port->tx_bytes; - else - chars = kfifo_len(&port->write_fifo) + port->tx_bytes; + chars = kfifo_len(&port->write_fifo) + port->tx_bytes; spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, chars); @@ -479,35 +383,25 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb) dbg("%s - port %d", __func__, port->number); - if (port->serial->type->multi_urb_write) { - kfree(urb->transfer_buffer); + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) + if (port->write_urbs[i] == urb) + break; - spin_lock_irqsave(&port->lock, flags); - port->tx_bytes -= urb->transfer_buffer_length; - port->tx_urbs--; - spin_unlock_irqrestore(&port->lock, flags); - } else { - for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) - if (port->write_urbs[i] == urb) - break; + spin_lock_irqsave(&port->lock, flags); + port->tx_bytes -= urb->transfer_buffer_length; + set_bit(i, &port->write_urbs_free); + spin_unlock_irqrestore(&port->lock, flags); + + if (status) { + dbg("%s - non-zero urb status: %d", __func__, status); spin_lock_irqsave(&port->lock, flags); - port->tx_bytes -= urb->transfer_buffer_length; - set_bit(i, &port->write_urbs_free); + kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&port->lock, flags); - - if (status) { - spin_lock_irqsave(&port->lock, flags); - kfifo_reset_out(&port->write_fifo); - spin_unlock_irqrestore(&port->lock, flags); - } else { - usb_serial_generic_write_start(port); - } + } else { + usb_serial_generic_write_start(port); } - if (status) - dbg("%s - non-zero urb status: %d", __func__, status); - usb_serial_port_softint(port); } EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 70b6d6b28997..061c997ae0cf 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -67,7 +67,6 @@ enum port_dev_state { * @write_urbs: pointers to the bulk out urbs for this port * @write_urbs_free: status bitmap the for bulk out urbs * @tx_bytes: number of bytes currently in host stack queues - * @tx_urbs: number of urbs currently in host stack queues * @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this * port. * @flags: usb serial port flags @@ -112,7 +111,6 @@ struct usb_serial_port { __u8 bulk_out_endpointAddress; int tx_bytes; - int tx_urbs; unsigned long flags; wait_queue_head_t write_wait; @@ -238,8 +236,6 @@ struct usb_serial_driver { struct usb_driver *usb_driver; struct usb_dynids dynids; - unsigned char multi_urb_write:1; - size_t bulk_in_size; size_t bulk_out_size; @@ -291,7 +287,7 @@ struct usb_serial_driver { void (*process_read_urb)(struct urb *urb); /* Called by the generic write implementation */ int (*prepare_write_buffer)(struct usb_serial_port *port, - void **dest, size_t size, const void *src, size_t count); + void *dest, size_t size); }; #define to_usb_serial_driver(d) \ container_of(d, struct usb_serial_driver, driver) @@ -345,7 +341,7 @@ extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags); extern void usb_serial_generic_process_read_urb(struct urb *urb); extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, - void **dest, size_t size, const void *src, size_t count); + void *dest, size_t size); extern int usb_serial_handle_sysrq_char(struct tty_struct *tty, struct usb_serial_port *port, unsigned int ch); -- cgit v1.2.3-58-ga151 From 24337c133ff92ba8d7c42819db17f7f2b0de3129 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Wed, 5 May 2010 15:46:26 -0700 Subject: USB: gadget webcam: depends on VIDEO_DEV g_webcam uses v4l[2] interfaces, so it should depend on VIDEO_DEV. ERROR: "v4l2_event_unsubscribe" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_event_queue" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_device_release" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_usercopy" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_event_dequeue" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_register_device" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_device_alloc" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_event_subscribe" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_unregister_device" [drivers/usb/gadget/g_webcam.ko] ndefined! ERROR: "v4l2_event_pending" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_fh_init" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_event_init" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "video_devdata" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_event_alloc" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_fh_add" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_fh_del" [drivers/usb/gadget/g_webcam.ko] undefined! ERROR: "v4l2_fh_exit" [drivers/usb/gadget/g_webcam.ko] undefined! Signed-off-by: Randy Dunlap Acked-by: Laurent Pinchart Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 10bfb4197599..96e1494723ad 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -879,6 +879,7 @@ config USB_G_HID # or video class gadget drivers), or specific hardware, here. config USB_G_WEBCAM tristate "USB Webcam Gadget" + depends on VIDEO_DEV help The Webcam Gadget acts as a composite USB Audio and Video Class device. It provides a userspace API to process UVC control requests -- cgit v1.2.3-58-ga151 From 28824b18ac4705e876a282a15ea0de8fc957551f Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 5 May 2010 12:53:13 +0200 Subject: USB: gadget: __init and __exit tags removed __init, __initdata and __exit tags have have been removed from various files to make it possible for gadgets that do not use the __init/__exit tags to use those. Files in question are related to: * the core composite framework, * the mass storage function (fixing a section mismatch) and * ethernet driver (ACM, ECM, RNDIS). Signed-off-by: Michal Nazarewicz Cc: Kyungmin Park Cc: Marek Szyprowski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 21 ++++++++++----------- drivers/usb/gadget/config.c | 4 ++-- drivers/usb/gadget/epautoconf.c | 12 ++++++------ drivers/usb/gadget/f_acm.c | 32 ++++++++++++++++---------------- drivers/usb/gadget/f_ecm.c | 33 +++++++++++++++++---------------- drivers/usb/gadget/f_mass_storage.c | 2 +- drivers/usb/gadget/f_rndis.c | 33 +++++++++++++++++---------------- drivers/usb/gadget/u_ether.c | 4 ++-- 8 files changed, 71 insertions(+), 70 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index f9aff1bbcb3e..dd6d1905c148 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -85,7 +85,7 @@ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); * This function returns the value of the function's bind(), which is * zero for success else a negative errno value. */ -int __init usb_add_function(struct usb_configuration *config, +int usb_add_function(struct usb_configuration *config, struct usb_function *function) { int value = -EINVAL; @@ -215,7 +215,7 @@ int usb_function_activate(struct usb_function *function) * Returns the interface ID which was allocated; or -ENODEV if no * more interface IDs can be allocated. */ -int __init usb_interface_id(struct usb_configuration *config, +int usb_interface_id(struct usb_configuration *config, struct usb_function *function) { unsigned id = config->next_interface_id; @@ -480,7 +480,7 @@ done: * assigns global resources including string IDs, and per-configuration * resources such as interface IDs and endpoints. */ -int __init usb_add_config(struct usb_composite_dev *cdev, +int usb_add_config(struct usb_composite_dev *cdev, struct usb_configuration *config) { int status = -EINVAL; @@ -677,7 +677,7 @@ static int get_string(struct usb_composite_dev *cdev, * ensure that for example different functions don't wrongly assign * different meanings to the same identifier. */ -int __init usb_string_id(struct usb_composite_dev *cdev) +int usb_string_id(struct usb_composite_dev *cdev) { if (cdev->next_string_id < 254) { /* string id 0 is reserved */ @@ -910,7 +910,7 @@ static ssize_t composite_show_suspended(struct device *dev, static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); -static void /* __init_or_exit */ +static void composite_unbind(struct usb_gadget *gadget) { struct usb_composite_dev *cdev = get_gadget_data(gadget); @@ -960,7 +960,7 @@ composite_unbind(struct usb_gadget *gadget) composite = NULL; } -static void __init +static void string_override_one(struct usb_gadget_strings *tab, u8 id, const char *s) { struct usb_string *str = tab->strings; @@ -973,7 +973,7 @@ string_override_one(struct usb_gadget_strings *tab, u8 id, const char *s) } } -static void __init +static void string_override(struct usb_gadget_strings **tab, u8 id, const char *s) { while (*tab) { @@ -982,7 +982,7 @@ string_override(struct usb_gadget_strings **tab, u8 id, const char *s) } } -static int __init composite_bind(struct usb_gadget *gadget) +static int composite_bind(struct usb_gadget *gadget) { struct usb_composite_dev *cdev; int status = -ENOMEM; @@ -1113,7 +1113,6 @@ static struct usb_gadget_driver composite_driver = { .speed = USB_SPEED_HIGH, .bind = composite_bind, - /* .unbind = __exit_p(composite_unbind), */ .unbind = composite_unbind, .setup = composite_setup, @@ -1142,7 +1141,7 @@ static struct usb_gadget_driver composite_driver = { * while it was binding. That would usually be done in order to wait for * some userspace participation. */ -int __init usb_composite_register(struct usb_composite_driver *driver) +int usb_composite_register(struct usb_composite_driver *driver) { if (!driver || !driver->dev || !driver->bind || composite) return -EINVAL; @@ -1163,7 +1162,7 @@ int __init usb_composite_register(struct usb_composite_driver *driver) * This function is used to unregister drivers using the composite * driver framework. */ -void /* __exit */ usb_composite_unregister(struct usb_composite_driver *driver) +void usb_composite_unregister(struct usb_composite_driver *driver) { if (composite != driver) return; diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c index 47e8e722682c..09084fd646ab 100644 --- a/drivers/usb/gadget/config.c +++ b/drivers/usb/gadget/config.c @@ -128,7 +128,7 @@ int usb_gadget_config_buf( * with identifiers (for interfaces, strings, endpoints, and more) * as needed by a given function instance. */ -struct usb_descriptor_header **__init +struct usb_descriptor_header ** usb_copy_descriptors(struct usb_descriptor_header **src) { struct usb_descriptor_header **tmp; @@ -175,7 +175,7 @@ usb_copy_descriptors(struct usb_descriptor_header **src) * intended use is to help remembering the endpoint descriptor to use * when enabling a given endpoint. */ -struct usb_endpoint_descriptor *__init +struct usb_endpoint_descriptor * usb_find_endpoint( struct usb_descriptor_header **src, struct usb_descriptor_header **copy, diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 3568de210f79..8a832488ccdd 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -34,12 +34,12 @@ /* we must assign addresses for configurable endpoints (like net2280) */ -static __initdata unsigned epnum; +static unsigned epnum; // #define MANY_ENDPOINTS #ifdef MANY_ENDPOINTS /* more than 15 configurable endpoints */ -static __initdata unsigned in_epnum; +static unsigned in_epnum; #endif @@ -59,7 +59,7 @@ static __initdata unsigned in_epnum; * NOTE: each endpoint is unidirectional, as specified by its USB * descriptor; and isn't specific to a configuration or altsetting. */ -static int __init +static int ep_matches ( struct usb_gadget *gadget, struct usb_ep *ep, @@ -187,7 +187,7 @@ ep_matches ( return 1; } -static struct usb_ep * __init +static struct usb_ep * find_ep (struct usb_gadget *gadget, const char *name) { struct usb_ep *ep; @@ -229,7 +229,7 @@ find_ep (struct usb_gadget *gadget, const char *name) * * On failure, this returns a null endpoint descriptor. */ -struct usb_ep * __init usb_ep_autoconfig ( +struct usb_ep *usb_ep_autoconfig ( struct usb_gadget *gadget, struct usb_endpoint_descriptor *desc ) @@ -304,7 +304,7 @@ struct usb_ep * __init usb_ep_autoconfig ( * state such as ep->driver_data and the record of assigned endpoints * used by usb_ep_autoconfig(). */ -void __init usb_ep_autoconfig_reset (struct usb_gadget *gadget) +void usb_ep_autoconfig_reset (struct usb_gadget *gadget) { struct usb_ep *ep; diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 400e1ebe6976..d47a123f15ab 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -116,7 +116,7 @@ acm_iad_descriptor = { }; -static struct usb_interface_descriptor acm_control_interface_desc __initdata = { +static struct usb_interface_descriptor acm_control_interface_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, /* .bInterfaceNumber = DYNAMIC */ @@ -127,7 +127,7 @@ static struct usb_interface_descriptor acm_control_interface_desc __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_interface_descriptor acm_data_interface_desc __initdata = { +static struct usb_interface_descriptor acm_data_interface_desc = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, /* .bInterfaceNumber = DYNAMIC */ @@ -138,7 +138,7 @@ static struct usb_interface_descriptor acm_data_interface_desc __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc acm_header_desc __initdata = { +static struct usb_cdc_header_desc acm_header_desc = { .bLength = sizeof(acm_header_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -146,7 +146,7 @@ static struct usb_cdc_header_desc acm_header_desc __initdata = { }; static struct usb_cdc_call_mgmt_descriptor -acm_call_mgmt_descriptor __initdata = { +acm_call_mgmt_descriptor = { .bLength = sizeof(acm_call_mgmt_descriptor), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, @@ -154,14 +154,14 @@ acm_call_mgmt_descriptor __initdata = { /* .bDataInterface = DYNAMIC */ }; -static struct usb_cdc_acm_descriptor acm_descriptor __initdata = { +static struct usb_cdc_acm_descriptor acm_descriptor = { .bLength = sizeof(acm_descriptor), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ACM_TYPE, .bmCapabilities = USB_CDC_CAP_LINE, }; -static struct usb_cdc_union_desc acm_union_desc __initdata = { +static struct usb_cdc_union_desc acm_union_desc = { .bLength = sizeof(acm_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -171,7 +171,7 @@ static struct usb_cdc_union_desc acm_union_desc __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor acm_fs_notify_desc __initdata = { +static struct usb_endpoint_descriptor acm_fs_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, @@ -180,21 +180,21 @@ static struct usb_endpoint_descriptor acm_fs_notify_desc __initdata = { .bInterval = 1 << GS_LOG2_NOTIFY_INTERVAL, }; -static struct usb_endpoint_descriptor acm_fs_in_desc __initdata = { +static struct usb_endpoint_descriptor acm_fs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor acm_fs_out_desc __initdata = { +static struct usb_endpoint_descriptor acm_fs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *acm_fs_function[] __initdata = { +static struct usb_descriptor_header *acm_fs_function[] = { (struct usb_descriptor_header *) &acm_iad_descriptor, (struct usb_descriptor_header *) &acm_control_interface_desc, (struct usb_descriptor_header *) &acm_header_desc, @@ -210,7 +210,7 @@ static struct usb_descriptor_header *acm_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor acm_hs_notify_desc __initdata = { +static struct usb_endpoint_descriptor acm_hs_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, @@ -219,21 +219,21 @@ static struct usb_endpoint_descriptor acm_hs_notify_desc __initdata = { .bInterval = GS_LOG2_NOTIFY_INTERVAL+4, }; -static struct usb_endpoint_descriptor acm_hs_in_desc __initdata = { +static struct usb_endpoint_descriptor acm_hs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor acm_hs_out_desc __initdata = { +static struct usb_endpoint_descriptor acm_hs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *acm_hs_function[] __initdata = { +static struct usb_descriptor_header *acm_hs_function[] = { (struct usb_descriptor_header *) &acm_iad_descriptor, (struct usb_descriptor_header *) &acm_control_interface_desc, (struct usb_descriptor_header *) &acm_header_desc, @@ -571,7 +571,7 @@ static int acm_send_break(struct gserial *port, int duration) /*-------------------------------------------------------------------------*/ /* ACM function driver setup/binding */ -static int __init +static int acm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; @@ -719,7 +719,7 @@ static inline bool can_support_cdc(struct usb_configuration *c) * handle all the ones it binds. Caller is also responsible * for calling @gserial_cleanup() before module unload. */ -int __init acm_bind_config(struct usb_configuration *c, u8 port_num) +int acm_bind_config(struct usb_configuration *c, u8 port_num) { struct f_acm *acm; int status; diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c index 4e595324c614..544257a89ed2 100644 --- a/drivers/usb/gadget/f_ecm.c +++ b/drivers/usb/gadget/f_ecm.c @@ -113,7 +113,7 @@ static inline unsigned ecm_bitrate(struct usb_gadget *g) /* interface descriptor: */ -static struct usb_interface_descriptor ecm_control_intf __initdata = { +static struct usb_interface_descriptor ecm_control_intf = { .bLength = sizeof ecm_control_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -126,7 +126,7 @@ static struct usb_interface_descriptor ecm_control_intf __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc ecm_header_desc __initdata = { +static struct usb_cdc_header_desc ecm_header_desc = { .bLength = sizeof ecm_header_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -134,7 +134,7 @@ static struct usb_cdc_header_desc ecm_header_desc __initdata = { .bcdCDC = cpu_to_le16(0x0110), }; -static struct usb_cdc_union_desc ecm_union_desc __initdata = { +static struct usb_cdc_union_desc ecm_union_desc = { .bLength = sizeof(ecm_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -142,7 +142,7 @@ static struct usb_cdc_union_desc ecm_union_desc __initdata = { /* .bSlaveInterface0 = DYNAMIC */ }; -static struct usb_cdc_ether_desc ecm_desc __initdata = { +static struct usb_cdc_ether_desc ecm_desc = { .bLength = sizeof ecm_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, @@ -157,7 +157,7 @@ static struct usb_cdc_ether_desc ecm_desc __initdata = { /* the default data interface has no endpoints ... */ -static struct usb_interface_descriptor ecm_data_nop_intf __initdata = { +static struct usb_interface_descriptor ecm_data_nop_intf = { .bLength = sizeof ecm_data_nop_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -172,7 +172,7 @@ static struct usb_interface_descriptor ecm_data_nop_intf __initdata = { /* ... but the "real" data interface has two bulk endpoints */ -static struct usb_interface_descriptor ecm_data_intf __initdata = { +static struct usb_interface_descriptor ecm_data_intf = { .bLength = sizeof ecm_data_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -187,7 +187,7 @@ static struct usb_interface_descriptor ecm_data_intf __initdata = { /* full speed support: */ -static struct usb_endpoint_descriptor fs_ecm_notify_desc __initdata = { +static struct usb_endpoint_descriptor fs_ecm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -197,7 +197,7 @@ static struct usb_endpoint_descriptor fs_ecm_notify_desc __initdata = { .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, }; -static struct usb_endpoint_descriptor fs_ecm_in_desc __initdata = { +static struct usb_endpoint_descriptor fs_ecm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -205,7 +205,7 @@ static struct usb_endpoint_descriptor fs_ecm_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor fs_ecm_out_desc __initdata = { +static struct usb_endpoint_descriptor fs_ecm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -213,7 +213,7 @@ static struct usb_endpoint_descriptor fs_ecm_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *ecm_fs_function[] __initdata = { +static struct usb_descriptor_header *ecm_fs_function[] = { /* CDC ECM control descriptors */ (struct usb_descriptor_header *) &ecm_control_intf, (struct usb_descriptor_header *) &ecm_header_desc, @@ -231,7 +231,7 @@ static struct usb_descriptor_header *ecm_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor hs_ecm_notify_desc __initdata = { +static struct usb_endpoint_descriptor hs_ecm_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -240,7 +240,7 @@ static struct usb_endpoint_descriptor hs_ecm_notify_desc __initdata = { .wMaxPacketSize = cpu_to_le16(ECM_STATUS_BYTECOUNT), .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, }; -static struct usb_endpoint_descriptor hs_ecm_in_desc __initdata = { +static struct usb_endpoint_descriptor hs_ecm_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -249,7 +249,7 @@ static struct usb_endpoint_descriptor hs_ecm_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor hs_ecm_out_desc __initdata = { +static struct usb_endpoint_descriptor hs_ecm_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -258,7 +258,7 @@ static struct usb_endpoint_descriptor hs_ecm_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *ecm_hs_function[] __initdata = { +static struct usb_descriptor_header *ecm_hs_function[] = { /* CDC ECM control descriptors */ (struct usb_descriptor_header *) &ecm_control_intf, (struct usb_descriptor_header *) &ecm_header_desc, @@ -597,7 +597,7 @@ static void ecm_close(struct gether *geth) /* ethernet function driver setup/binding */ -static int __init +static int ecm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; @@ -763,7 +763,8 @@ ecm_unbind(struct usb_configuration *c, struct usb_function *f) * Caller must have called @gether_setup(). Caller is also responsible * for calling @gether_cleanup() before module unload. */ -int __init ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +int +ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) { struct f_ecm *ecm; int status; diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index c904aa39ad84..6cfd2f428d38 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2967,7 +2967,7 @@ static void fsg_unbind(struct usb_configuration *c, struct usb_function *f) } -static int __init fsg_bind(struct usb_configuration *c, struct usb_function *f) +static int fsg_bind(struct usb_configuration *c, struct usb_function *f) { struct fsg_dev *fsg = fsg_from_func(f); struct usb_gadget *gadget = c->cdev->gadget; diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 56b022150f22..882484a40398 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -122,7 +122,7 @@ static unsigned int bitrate(struct usb_gadget *g) /* interface descriptor: */ -static struct usb_interface_descriptor rndis_control_intf __initdata = { +static struct usb_interface_descriptor rndis_control_intf = { .bLength = sizeof rndis_control_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -135,7 +135,7 @@ static struct usb_interface_descriptor rndis_control_intf __initdata = { /* .iInterface = DYNAMIC */ }; -static struct usb_cdc_header_desc header_desc __initdata = { +static struct usb_cdc_header_desc header_desc = { .bLength = sizeof header_desc, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_HEADER_TYPE, @@ -143,7 +143,7 @@ static struct usb_cdc_header_desc header_desc __initdata = { .bcdCDC = cpu_to_le16(0x0110), }; -static struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor __initdata = { +static struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor = { .bLength = sizeof call_mgmt_descriptor, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, @@ -152,7 +152,7 @@ static struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor __initdata = { .bDataInterface = 0x01, }; -static struct usb_cdc_acm_descriptor rndis_acm_descriptor __initdata = { +static struct usb_cdc_acm_descriptor rndis_acm_descriptor = { .bLength = sizeof rndis_acm_descriptor, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ACM_TYPE, @@ -160,7 +160,7 @@ static struct usb_cdc_acm_descriptor rndis_acm_descriptor __initdata = { .bmCapabilities = 0x00, }; -static struct usb_cdc_union_desc rndis_union_desc __initdata = { +static struct usb_cdc_union_desc rndis_union_desc = { .bLength = sizeof(rndis_union_desc), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_UNION_TYPE, @@ -170,7 +170,7 @@ static struct usb_cdc_union_desc rndis_union_desc __initdata = { /* the data interface has two bulk endpoints */ -static struct usb_interface_descriptor rndis_data_intf __initdata = { +static struct usb_interface_descriptor rndis_data_intf = { .bLength = sizeof rndis_data_intf, .bDescriptorType = USB_DT_INTERFACE, @@ -198,7 +198,7 @@ rndis_iad_descriptor = { /* full speed support: */ -static struct usb_endpoint_descriptor fs_notify_desc __initdata = { +static struct usb_endpoint_descriptor fs_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -208,7 +208,7 @@ static struct usb_endpoint_descriptor fs_notify_desc __initdata = { .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, }; -static struct usb_endpoint_descriptor fs_in_desc __initdata = { +static struct usb_endpoint_descriptor fs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -216,7 +216,7 @@ static struct usb_endpoint_descriptor fs_in_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_endpoint_descriptor fs_out_desc __initdata = { +static struct usb_endpoint_descriptor fs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -224,7 +224,7 @@ static struct usb_endpoint_descriptor fs_out_desc __initdata = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; -static struct usb_descriptor_header *eth_fs_function[] __initdata = { +static struct usb_descriptor_header *eth_fs_function[] = { (struct usb_descriptor_header *) &rndis_iad_descriptor, /* control interface matches ACM, not Ethernet */ (struct usb_descriptor_header *) &rndis_control_intf, @@ -242,7 +242,7 @@ static struct usb_descriptor_header *eth_fs_function[] __initdata = { /* high speed support: */ -static struct usb_endpoint_descriptor hs_notify_desc __initdata = { +static struct usb_endpoint_descriptor hs_notify_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -251,7 +251,7 @@ static struct usb_endpoint_descriptor hs_notify_desc __initdata = { .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, }; -static struct usb_endpoint_descriptor hs_in_desc __initdata = { +static struct usb_endpoint_descriptor hs_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -260,7 +260,7 @@ static struct usb_endpoint_descriptor hs_in_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_endpoint_descriptor hs_out_desc __initdata = { +static struct usb_endpoint_descriptor hs_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, @@ -269,7 +269,7 @@ static struct usb_endpoint_descriptor hs_out_desc __initdata = { .wMaxPacketSize = cpu_to_le16(512), }; -static struct usb_descriptor_header *eth_hs_function[] __initdata = { +static struct usb_descriptor_header *eth_hs_function[] = { (struct usb_descriptor_header *) &rndis_iad_descriptor, /* control interface matches ACM, not Ethernet */ (struct usb_descriptor_header *) &rndis_control_intf, @@ -594,7 +594,7 @@ static void rndis_close(struct gether *geth) /* ethernet function driver setup/binding */ -static int __init +static int rndis_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; @@ -786,7 +786,8 @@ static inline bool can_support_rndis(struct usb_configuration *c) * Caller must have called @gether_setup(). Caller is also responsible * for calling @gether_cleanup() before module unload. */ -int __init rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +int +rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) { struct f_rndis *rndis; int status; diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 07f4178ad178..1da755a1c855 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -715,7 +715,7 @@ static u8 __init nibble(unsigned char c) return 0; } -static int __init get_ether_addr(const char *str, u8 *dev_addr) +static int get_ether_addr(const char *str, u8 *dev_addr) { if (str) { unsigned i; @@ -764,7 +764,7 @@ static struct device_type gadget_type = { * * Returns negative errno, or zero on success */ -int __init gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) +int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) { struct eth_dev *dev; struct net_device *net; -- cgit v1.2.3-58-ga151 From ddf8abd2599491cbad959c700b90ba72a5dce8d0 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 5 May 2010 12:53:14 +0200 Subject: USB: f_fs: the FunctionFS driver The FunctionFS is a USB composite function that can be used with the composite framework to create an USB gadget. >From kernel point of view it is just a composite function with some unique behaviour. It may be added to an USB configuration only after the user space driver has registered by writing descriptors and strings (the user space program has to provide the same information that kernel level composite functions provide when they are added to the configuration). >From user space point of view it is a file system which when mounted provide an "ep0" file. User space driver need to write descriptors and strings to that file. It does not need to worry about endpoints, interfaces or strings numbers but simply provide descriptors such as if the function was the only one (endpoints and strings numbers starting from one and interface numbers starting from core). The FunctionFS changes numbers of those as needed also handling situation when numbers differ in different configurations. When descriptors and strings are written "ep#" files appear (one for each declared endpoint) which handle communication on a single endpoint. Again, FunctionFS takes care of the real numbers and changing of the configuration (which means that "ep1" file may be really mapped to (say) endpoint 3 (and when configuration changes to (say) endpoint 2)). "ep0" is used for receiving events and handling setup requests. When all files are closed the function disables itself. Signed-off-by: Michal Nazarewicz Cc: Kyungmin Park Cc: Marek Szyprowski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_fs.c | 2441 ++++++++++++++++++++++++++++++++++++++++ include/linux/usb/functionfs.h | 199 ++++ 2 files changed, 2640 insertions(+) create mode 100644 drivers/usb/gadget/f_fs.c create mode 100644 include/linux/usb/functionfs.h (limited to 'drivers') diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c new file mode 100644 index 000000000000..af89ca672c60 --- /dev/null +++ b/drivers/usb/gadget/f_fs.c @@ -0,0 +1,2441 @@ +/* + * f_fs.c -- user mode filesystem api for usb composite funtcion controllers + * + * Copyright (C) 2010 Samsung Electronics + * Author: Michal Nazarewicz + * + * Based on inode.c (GadgetFS): + * Copyright (C) 2003-2004 David Brownell + * Copyright (C) 2003 Agilent Technologies + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* #define DEBUG */ +/* #define VERBOSE_DEBUG */ + +#include +#include +#include + +#include +#include + + +#define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ + + +/* Debuging *****************************************************************/ + +#define ffs_printk(level, fmt, args...) printk(level "f_fs: " fmt "\n", ## args) + +#define FERR(...) ffs_printk(KERN_ERR, __VA_ARGS__) +#define FINFO(...) ffs_printk(KERN_INFO, __VA_ARGS__) + +#ifdef DEBUG +# define FDBG(...) ffs_printk(KERN_DEBUG, __VA_ARGS__) +#else +# define FDBG(...) do { } while (0) +#endif /* DEBUG */ + +#ifdef VERBOSE_DEBUG +# define FVDBG FDBG +#else +# define FVDBG(...) do { } while (0) +#endif /* VERBOSE_DEBUG */ + +#define ENTER() FVDBG("%s()", __func__) + +#ifdef VERBOSE_DEBUG +# define ffs_dump_mem(prefix, ptr, len) \ + print_hex_dump_bytes("f_fs" prefix ": ", DUMP_PREFIX_NONE, ptr, len) +#else +# define ffs_dump_mem(prefix, ptr, len) do { } while (0) +#endif + + +/* The data structure and setup file ****************************************/ + +enum ffs_state { + /* Waiting for descriptors and strings. */ + /* In this state no open(2), read(2) or write(2) on epfiles + * may succeed (which should not be the problem as there + * should be no such files opened in the firts place). */ + FFS_READ_DESCRIPTORS, + FFS_READ_STRINGS, + + /* We've got descriptors and strings. We are or have called + * functionfs_ready_callback(). functionfs_bind() may have + * been called but we don't know. */ + /* This is the only state in which operations on epfiles may + * succeed. */ + FFS_ACTIVE, + + /* All endpoints have been closed. This state is also set if + * we encounter an unrecoverable error. The only + * unrecoverable error is situation when after reading strings + * from user space we fail to initialise EP files or + * functionfs_ready_callback() returns with error (<0). */ + /* In this state no open(2), read(2) or write(2) (both on ep0 + * as well as epfile) may succeed (at this point epfiles are + * unlinked and all closed so this is not a problem; ep0 is + * also closed but ep0 file exists and so open(2) on ep0 must + * fail). */ + FFS_CLOSING +}; + + +enum ffs_setup_state { + /* There is no setup request pending. */ + FFS_NO_SETUP, + /* User has read events and there was a setup request event + * there. The next read/write on ep0 will handle the + * request. */ + FFS_SETUP_PENDING, + /* There was event pending but before user space handled it + * some other event was introduced which canceled existing + * setup. If this state is set read/write on ep0 return + * -EIDRM. This state is only set when adding event. */ + FFS_SETUP_CANCELED +}; + + + +struct ffs_epfile; +struct ffs_function; + +struct ffs_data { + struct usb_gadget *gadget; + + /* Protect access read/write operations, only one read/write + * at a time. As a consequence protects ep0req and company. + * While setup request is being processed (queued) this is + * held. */ + struct mutex mutex; + + /* Protect access to enpoint related structures (basically + * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for + * endpint zero. */ + spinlock_t eps_lock; + + /* XXX REVISIT do we need our own request? Since we are not + * handling setup requests immidiatelly user space may be so + * slow that another setup will be sent to the gadget but this + * time not to us but another function and then there could be + * a race. Is taht the case? Or maybe we can use cdev->req + * after all, maybe we just need some spinlock for that? */ + struct usb_request *ep0req; /* P: mutex */ + struct completion ep0req_completion; /* P: mutex */ + int ep0req_status; /* P: mutex */ + + /* reference counter */ + atomic_t ref; + /* how many files are opened (EP0 and others) */ + atomic_t opened; + + /* EP0 state */ + enum ffs_state state; + + /* + * Possible transations: + * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock + * happens only in ep0 read which is P: mutex + * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock + * happens only in ep0 i/o which is P: mutex + * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELED -- P: ev.waitq.lock + * + FFS_SETUP_CANCELED -> FFS_NO_SETUP -- cmpxchg + */ + enum ffs_setup_state setup_state; + +#define FFS_SETUP_STATE(ffs) \ + ((enum ffs_setup_state)cmpxchg(&(ffs)->setup_state, \ + FFS_SETUP_CANCELED, FFS_NO_SETUP)) + + /* Events & such. */ + struct { + u8 types[4]; + unsigned short count; + /* XXX REVISIT need to update it in some places, or do we? */ + unsigned short can_stall; + struct usb_ctrlrequest setup; + + wait_queue_head_t waitq; + } ev; /* the whole structure, P: ev.waitq.lock */ + + /* Flags */ + unsigned long flags; +#define FFS_FL_CALL_CLOSED_CALLBACK 0 +#define FFS_FL_BOUND 1 + + /* Active function */ + struct ffs_function *func; + + /* Device name, write once when file system is mounted. + * Intendet for user to read if she wants. */ + const char *dev_name; + /* Private data for our user (ie. gadget). Managed by + * user. */ + void *private_data; + + /* filled by __ffs_data_got_descs() */ + /* real descriptors are 16 bytes after raw_descs (so you need + * to skip 16 bytes (ie. ffs->raw_descs + 16) to get to the + * first full speed descriptor). raw_descs_length and + * raw_fs_descs_length do not have those 16 bytes added. */ + const void *raw_descs; + unsigned raw_descs_length; + unsigned raw_fs_descs_length; + unsigned fs_descs_count; + unsigned hs_descs_count; + + unsigned short strings_count; + unsigned short interfaces_count; + unsigned short eps_count; + unsigned short _pad1; + + /* filled by __ffs_data_got_strings() */ + /* ids in stringtabs are set in functionfs_bind() */ + const void *raw_strings; + struct usb_gadget_strings **stringtabs; + + /* File system's super block, write once when file system is mounted. */ + struct super_block *sb; + + /* File permissions, written once when fs is mounted*/ + struct ffs_file_perms { + umode_t mode; + uid_t uid; + gid_t gid; + } file_perms; + + /* The endpoint files, filled by ffs_epfiles_create(), + * destroyed by ffs_epfiles_destroy(). */ + struct ffs_epfile *epfiles; +}; + +/* Reference counter handling */ +static void ffs_data_get(struct ffs_data *ffs); +static void ffs_data_put(struct ffs_data *ffs); +/* Creates new ffs_data object. */ +static struct ffs_data *__must_check ffs_data_new(void) __attribute__((malloc)); + +/* Opened counter handling. */ +static void ffs_data_opened(struct ffs_data *ffs); +static void ffs_data_closed(struct ffs_data *ffs); + +/* Called with ffs->mutex held; take over ownerrship of data. */ +static int __must_check +__ffs_data_got_descs(struct ffs_data *ffs, char *data, size_t len); +static int __must_check +__ffs_data_got_strings(struct ffs_data *ffs, char *data, size_t len); + + +/* The function structure ***************************************************/ + +struct ffs_ep; + +struct ffs_function { + struct usb_configuration *conf; + struct usb_gadget *gadget; + struct ffs_data *ffs; + + struct ffs_ep *eps; + u8 eps_revmap[16]; + short *interfaces_nums; + + struct usb_function function; +}; + + +static struct ffs_function *ffs_func_from_usb(struct usb_function *f) +{ + return container_of(f, struct ffs_function, function); +} + +static void ffs_func_free(struct ffs_function *func); + + +static void ffs_func_eps_disable(struct ffs_function *func); +static int __must_check ffs_func_eps_enable(struct ffs_function *func); + + +static int ffs_func_bind(struct usb_configuration *, + struct usb_function *); +static void ffs_func_unbind(struct usb_configuration *, + struct usb_function *); +static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); +static void ffs_func_disable(struct usb_function *); +static int ffs_func_setup(struct usb_function *, + const struct usb_ctrlrequest *); +static void ffs_func_suspend(struct usb_function *); +static void ffs_func_resume(struct usb_function *); + + +static int ffs_func_revmap_ep(struct ffs_function *func, u8 num); +static int ffs_func_revmap_intf(struct ffs_function *func, u8 intf); + + + +/* The endpoints structures *************************************************/ + +struct ffs_ep { + struct usb_ep *ep; /* P: ffs->eps_lock */ + struct usb_request *req; /* P: epfile->mutex */ + + /* [0]: full speed, [1]: high speed */ + struct usb_endpoint_descriptor *descs[2]; + + u8 num; + + int status; /* P: epfile->mutex */ +}; + +struct ffs_epfile { + /* Protects ep->ep and ep->req. */ + struct mutex mutex; + wait_queue_head_t wait; + + struct ffs_data *ffs; + struct ffs_ep *ep; /* P: ffs->eps_lock */ + + struct dentry *dentry; + + char name[5]; + + unsigned char in; /* P: ffs->eps_lock */ + unsigned char isoc; /* P: ffs->eps_lock */ + + unsigned char _pad; +}; + + +static int __must_check ffs_epfiles_create(struct ffs_data *ffs); +static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count); + +static struct inode *__must_check +ffs_sb_create_file(struct super_block *sb, const char *name, void *data, + const struct file_operations *fops, + struct dentry **dentry_p); + + +/* Misc helper functions ****************************************************/ + +static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) + __attribute__((warn_unused_result, nonnull)); +static char *ffs_prepare_buffer(const char * __user buf, size_t len) + __attribute__((warn_unused_result, nonnull)); + + +/* Control file aka ep0 *****************************************************/ + +static void ffs_ep0_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct ffs_data *ffs = req->context; + + complete_all(&ffs->ep0req_completion); +} + + +static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len) +{ + struct usb_request *req = ffs->ep0req; + int ret; + + req->zero = len < le16_to_cpu(ffs->ev.setup.wLength); + + spin_unlock_irq(&ffs->ev.waitq.lock); + + req->buf = data; + req->length = len; + + INIT_COMPLETION(ffs->ep0req_completion); + + ret = usb_ep_queue(ffs->gadget->ep0, req, GFP_ATOMIC); + if (unlikely(ret < 0)) + return ret; + + ret = wait_for_completion_interruptible(&ffs->ep0req_completion); + if (unlikely(ret)) { + usb_ep_dequeue(ffs->gadget->ep0, req); + return -EINTR; + } + + ffs->setup_state = FFS_NO_SETUP; + return ffs->ep0req_status; +} + +static int __ffs_ep0_stall(struct ffs_data *ffs) +{ + if (ffs->ev.can_stall) { + FVDBG("ep0 stall\n"); + usb_ep_set_halt(ffs->gadget->ep0); + ffs->setup_state = FFS_NO_SETUP; + return -EL2HLT; + } else { + FDBG("bogus ep0 stall!\n"); + return -ESRCH; + } +} + + +static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, + size_t len, loff_t *ptr) +{ + struct ffs_data *ffs = file->private_data; + ssize_t ret; + char *data; + + ENTER(); + + /* Fast check if setup was canceled */ + if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) + return -EIDRM; + + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (unlikely(ret < 0)) + return ret; + + + /* Check state */ + switch (ffs->state) { + case FFS_READ_DESCRIPTORS: + case FFS_READ_STRINGS: + /* Copy data */ + if (unlikely(len < 16)) { + ret = -EINVAL; + break; + } + + data = ffs_prepare_buffer(buf, len); + if (unlikely(IS_ERR(data))) { + ret = PTR_ERR(data); + break; + } + + /* Handle data */ + if (ffs->state == FFS_READ_DESCRIPTORS) { + FINFO("read descriptors"); + ret = __ffs_data_got_descs(ffs, data, len); + if (unlikely(ret < 0)) + break; + + ffs->state = FFS_READ_STRINGS; + ret = len; + } else { + FINFO("read strings"); + ret = __ffs_data_got_strings(ffs, data, len); + if (unlikely(ret < 0)) + break; + + ret = ffs_epfiles_create(ffs); + if (unlikely(ret)) { + ffs->state = FFS_CLOSING; + break; + } + + ffs->state = FFS_ACTIVE; + mutex_unlock(&ffs->mutex); + + ret = functionfs_ready_callback(ffs); + if (unlikely(ret < 0)) { + ffs->state = FFS_CLOSING; + return ret; + } + + set_bit(FFS_FL_CALL_CLOSED_CALLBACK, &ffs->flags); + return len; + } + break; + + + case FFS_ACTIVE: + data = NULL; + /* We're called from user space, we can use _irq + * rather then _irqsave */ + spin_lock_irq(&ffs->ev.waitq.lock); + switch (FFS_SETUP_STATE(ffs)) { + case FFS_SETUP_CANCELED: + ret = -EIDRM; + goto done_spin; + + case FFS_NO_SETUP: + ret = -ESRCH; + goto done_spin; + + case FFS_SETUP_PENDING: + break; + } + + /* FFS_SETUP_PENDING */ + if (!(ffs->ev.setup.bRequestType & USB_DIR_IN)) { + spin_unlock_irq(&ffs->ev.waitq.lock); + ret = __ffs_ep0_stall(ffs); + break; + } + + /* FFS_SETUP_PENDING and not stall */ + len = min(len, (size_t)le16_to_cpu(ffs->ev.setup.wLength)); + + spin_unlock_irq(&ffs->ev.waitq.lock); + + data = ffs_prepare_buffer(buf, len); + if (unlikely(IS_ERR(data))) { + ret = PTR_ERR(data); + break; + } + + spin_lock_irq(&ffs->ev.waitq.lock); + + /* We are guaranteed to be still in FFS_ACTIVE state + * but the state of setup could have changed from + * FFS_SETUP_PENDING to FFS_SETUP_CANCELED so we need + * to check for that. If that happened we copied data + * from user space in vain but it's unlikely. */ + /* For sure we are not in FFS_NO_SETUP since this is + * the only place FFS_SETUP_PENDING -> FFS_NO_SETUP + * transition can be performed and it's protected by + * mutex. */ + + if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) { + ret = -EIDRM; +done_spin: + spin_unlock_irq(&ffs->ev.waitq.lock); + } else { + /* unlocks spinlock */ + ret = __ffs_ep0_queue_wait(ffs, data, len); + } + kfree(data); + break; + + + default: + ret = -EBADFD; + break; + } + + + mutex_unlock(&ffs->mutex); + return ret; +} + + + +static ssize_t __ffs_ep0_read_events(struct ffs_data *ffs, char __user *buf, + size_t n) +{ + /* We are holding ffs->ev.waitq.lock and ffs->mutex and we need + * to release them. */ + + struct usb_functionfs_event events[n]; + unsigned i = 0; + + memset(events, 0, sizeof events); + + do { + events[i].type = ffs->ev.types[i]; + if (events[i].type == FUNCTIONFS_SETUP) { + events[i].u.setup = ffs->ev.setup; + ffs->setup_state = FFS_SETUP_PENDING; + } + } while (++i < n); + + if (n < ffs->ev.count) { + ffs->ev.count -= n; + memmove(ffs->ev.types, ffs->ev.types + n, + ffs->ev.count * sizeof *ffs->ev.types); + } else { + ffs->ev.count = 0; + } + + spin_unlock_irq(&ffs->ev.waitq.lock); + mutex_unlock(&ffs->mutex); + + return unlikely(__copy_to_user(buf, events, sizeof events)) + ? -EFAULT : sizeof events; +} + + +static ssize_t ffs_ep0_read(struct file *file, char __user *buf, + size_t len, loff_t *ptr) +{ + struct ffs_data *ffs = file->private_data; + char *data = NULL; + size_t n; + int ret; + + ENTER(); + + /* Fast check if setup was canceled */ + if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) + return -EIDRM; + + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (unlikely(ret < 0)) + return ret; + + + /* Check state */ + if (ffs->state != FFS_ACTIVE) { + ret = -EBADFD; + goto done_mutex; + } + + + /* We're called from user space, we can use _irq rather then + * _irqsave */ + spin_lock_irq(&ffs->ev.waitq.lock); + + switch (FFS_SETUP_STATE(ffs)) { + case FFS_SETUP_CANCELED: + ret = -EIDRM; + break; + + case FFS_NO_SETUP: + n = len / sizeof(struct usb_functionfs_event); + if (unlikely(!n)) { + ret = -EINVAL; + break; + } + + if ((file->f_flags & O_NONBLOCK) && !ffs->ev.count) { + ret = -EAGAIN; + break; + } + + if (unlikely(wait_event_interruptible_exclusive_locked_irq(ffs->ev.waitq, ffs->ev.count))) { + ret = -EINTR; + break; + } + + return __ffs_ep0_read_events(ffs, buf, + min(n, (size_t)ffs->ev.count)); + + + case FFS_SETUP_PENDING: + if (ffs->ev.setup.bRequestType & USB_DIR_IN) { + spin_unlock_irq(&ffs->ev.waitq.lock); + ret = __ffs_ep0_stall(ffs); + goto done_mutex; + } + + len = min(len, (size_t)le16_to_cpu(ffs->ev.setup.wLength)); + + spin_unlock_irq(&ffs->ev.waitq.lock); + + if (likely(len)) { + data = kmalloc(len, GFP_KERNEL); + if (unlikely(!data)) { + ret = -ENOMEM; + goto done_mutex; + } + } + + spin_lock_irq(&ffs->ev.waitq.lock); + + /* See ffs_ep0_write() */ + if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) { + ret = -EIDRM; + break; + } + + /* unlocks spinlock */ + ret = __ffs_ep0_queue_wait(ffs, data, len); + if (likely(ret > 0) && unlikely(__copy_to_user(buf, data, len))) + ret = -EFAULT; + goto done_mutex; + + default: + ret = -EBADFD; + break; + } + + spin_unlock_irq(&ffs->ev.waitq.lock); +done_mutex: + mutex_unlock(&ffs->mutex); + kfree(data); + return ret; +} + + + +static int ffs_ep0_open(struct inode *inode, struct file *file) +{ + struct ffs_data *ffs = inode->i_private; + + ENTER(); + + if (unlikely(ffs->state == FFS_CLOSING)) + return -EBUSY; + + file->private_data = ffs; + ffs_data_opened(ffs); + + return 0; +} + + +static int ffs_ep0_release(struct inode *inode, struct file *file) +{ + struct ffs_data *ffs = file->private_data; + + ENTER(); + + ffs_data_closed(ffs); + + return 0; +} + + +static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value) +{ + struct ffs_data *ffs = file->private_data; + struct usb_gadget *gadget = ffs->gadget; + long ret; + + ENTER(); + + if (code == FUNCTIONFS_INTERFACE_REVMAP) { + struct ffs_function *func = ffs->func; + ret = func ? ffs_func_revmap_intf(func, value) : -ENODEV; + } else if (gadget->ops->ioctl) { + lock_kernel(); + ret = gadget->ops->ioctl(gadget, code, value); + unlock_kernel(); + } else { + ret = -ENOTTY; + } + + return ret; +} + + +static const struct file_operations ffs_ep0_operations = { + .owner = THIS_MODULE, + .llseek = no_llseek, + + .open = ffs_ep0_open, + .write = ffs_ep0_write, + .read = ffs_ep0_read, + .release = ffs_ep0_release, + .unlocked_ioctl = ffs_ep0_ioctl, +}; + + +/* "Normal" endpoints operations ********************************************/ + + +static void ffs_epfile_io_complete(struct usb_ep *_ep, struct usb_request *req) +{ + ENTER(); + if (likely(req->context)) { + struct ffs_ep *ep = _ep->driver_data; + ep->status = req->status ? req->status : req->actual; + complete(req->context); + } +} + + +static ssize_t ffs_epfile_io(struct file *file, + char __user *buf, size_t len, int read) +{ + struct ffs_epfile *epfile = file->private_data; + struct ffs_ep *ep; + char *data = NULL; + ssize_t ret; + int halt; + + goto first_try; + do { + spin_unlock_irq(&epfile->ffs->eps_lock); + mutex_unlock(&epfile->mutex); + +first_try: + /* Are we still active? */ + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) { + ret = -ENODEV; + goto error; + } + + /* Wait for endpoint to be enabled */ + ep = epfile->ep; + if (!ep) { + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + goto error; + } + + if (unlikely(wait_event_interruptible + (epfile->wait, (ep = epfile->ep)))) { + ret = -EINTR; + goto error; + } + } + + /* Do we halt? */ + halt = !read == !epfile->in; + if (halt && epfile->isoc) { + ret = -EINVAL; + goto error; + } + + /* Allocate & copy */ + if (!halt && !data) { + data = kzalloc(len, GFP_KERNEL); + if (unlikely(!data)) + return -ENOMEM; + + if (!read && + unlikely(__copy_from_user(data, buf, len))) { + ret = -EFAULT; + goto error; + } + } + + /* We will be using request */ + ret = ffs_mutex_lock(&epfile->mutex, + file->f_flags & O_NONBLOCK); + if (unlikely(ret)) + goto error; + + /* We're called from user space, we can use _irq rather then + * _irqsave */ + spin_lock_irq(&epfile->ffs->eps_lock); + + /* While we were acquiring mutex endpoint got disabled + * or changed? */ + } while (unlikely(epfile->ep != ep)); + + /* Halt */ + if (unlikely(halt)) { + if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep)) + usb_ep_set_halt(ep->ep); + spin_unlock_irq(&epfile->ffs->eps_lock); + ret = -EBADMSG; + } else { + /* Fire the request */ + DECLARE_COMPLETION_ONSTACK(done); + + struct usb_request *req = ep->req; + req->context = &done; + req->complete = ffs_epfile_io_complete; + req->buf = data; + req->length = len; + + ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); + + spin_unlock_irq(&epfile->ffs->eps_lock); + + if (unlikely(ret < 0)) { + /* nop */ + } else if (unlikely(wait_for_completion_interruptible(&done))) { + ret = -EINTR; + usb_ep_dequeue(ep->ep, req); + } else { + ret = ep->status; + if (read && ret > 0 && + unlikely(copy_to_user(buf, data, ret))) + ret = -EFAULT; + } + } + + mutex_unlock(&epfile->mutex); +error: + kfree(data); + return ret; +} + + +static ssize_t +ffs_epfile_write(struct file *file, const char __user *buf, size_t len, + loff_t *ptr) +{ + ENTER(); + + return ffs_epfile_io(file, (char __user *)buf, len, 0); +} + +static ssize_t +ffs_epfile_read(struct file *file, char __user *buf, size_t len, loff_t *ptr) +{ + ENTER(); + + return ffs_epfile_io(file, buf, len, 1); +} + +static int +ffs_epfile_open(struct inode *inode, struct file *file) +{ + struct ffs_epfile *epfile = inode->i_private; + + ENTER(); + + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) + return -ENODEV; + + file->private_data = epfile; + ffs_data_opened(epfile->ffs); + + return 0; +} + +static int +ffs_epfile_release(struct inode *inode, struct file *file) +{ + struct ffs_epfile *epfile = inode->i_private; + + ENTER(); + + ffs_data_closed(epfile->ffs); + + return 0; +} + + +static long ffs_epfile_ioctl(struct file *file, unsigned code, + unsigned long value) +{ + struct ffs_epfile *epfile = file->private_data; + int ret; + + ENTER(); + + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) + return -ENODEV; + + spin_lock_irq(&epfile->ffs->eps_lock); + if (likely(epfile->ep)) { + switch (code) { + case FUNCTIONFS_FIFO_STATUS: + ret = usb_ep_fifo_status(epfile->ep->ep); + break; + case FUNCTIONFS_FIFO_FLUSH: + usb_ep_fifo_flush(epfile->ep->ep); + ret = 0; + break; + case FUNCTIONFS_CLEAR_HALT: + ret = usb_ep_clear_halt(epfile->ep->ep); + break; + case FUNCTIONFS_ENDPOINT_REVMAP: + ret = epfile->ep->num; + break; + default: + ret = -ENOTTY; + } + } else { + ret = -ENODEV; + } + spin_unlock_irq(&epfile->ffs->eps_lock); + + return ret; +} + + +static const struct file_operations ffs_epfile_operations = { + .owner = THIS_MODULE, + .llseek = no_llseek, + + .open = ffs_epfile_open, + .write = ffs_epfile_write, + .read = ffs_epfile_read, + .release = ffs_epfile_release, + .unlocked_ioctl = ffs_epfile_ioctl, +}; + + + +/* File system and super block operations ***********************************/ + +/* + * Mounting the filesystem creates a controller file, used first for + * function configuration then later for event monitoring. + */ + + +static struct inode *__must_check +ffs_sb_make_inode(struct super_block *sb, void *data, + const struct file_operations *fops, + const struct inode_operations *iops, + struct ffs_file_perms *perms) +{ + struct inode *inode; + + ENTER(); + + inode = new_inode(sb); + + if (likely(inode)) { + struct timespec current_time = CURRENT_TIME; + + inode->i_mode = perms->mode; + inode->i_uid = perms->uid; + inode->i_gid = perms->gid; + inode->i_atime = current_time; + inode->i_mtime = current_time; + inode->i_ctime = current_time; + inode->i_private = data; + if (fops) + inode->i_fop = fops; + if (iops) + inode->i_op = iops; + } + + return inode; +} + + +/* Create "regular" file */ + +static struct inode *ffs_sb_create_file(struct super_block *sb, + const char *name, void *data, + const struct file_operations *fops, + struct dentry **dentry_p) +{ + struct ffs_data *ffs = sb->s_fs_info; + struct dentry *dentry; + struct inode *inode; + + ENTER(); + + dentry = d_alloc_name(sb->s_root, name); + if (unlikely(!dentry)) + return NULL; + + inode = ffs_sb_make_inode(sb, data, fops, NULL, &ffs->file_perms); + if (unlikely(!inode)) { + dput(dentry); + return NULL; + } + + d_add(dentry, inode); + if (dentry_p) + *dentry_p = dentry; + + return inode; +} + + +/* Super block */ + +static const struct super_operations ffs_sb_operations = { + .statfs = simple_statfs, + .drop_inode = generic_delete_inode, +}; + +struct ffs_sb_fill_data { + struct ffs_file_perms perms; + umode_t root_mode; + const char *dev_name; +}; + +static int ffs_sb_fill(struct super_block *sb, void *_data, int silent) +{ + struct ffs_sb_fill_data *data = _data; + struct inode *inode; + struct dentry *d; + struct ffs_data *ffs; + + ENTER(); + + /* Initialize data */ + ffs = ffs_data_new(); + if (unlikely(!ffs)) + goto enomem0; + + ffs->sb = sb; + ffs->dev_name = data->dev_name; + ffs->file_perms = data->perms; + + sb->s_fs_info = ffs; + sb->s_blocksize = PAGE_CACHE_SIZE; + sb->s_blocksize_bits = PAGE_CACHE_SHIFT; + sb->s_magic = FUNCTIONFS_MAGIC; + sb->s_op = &ffs_sb_operations; + sb->s_time_gran = 1; + + /* Root inode */ + data->perms.mode = data->root_mode; + inode = ffs_sb_make_inode(sb, NULL, + &simple_dir_operations, + &simple_dir_inode_operations, + &data->perms); + if (unlikely(!inode)) + goto enomem1; + d = d_alloc_root(inode); + if (unlikely(!d)) + goto enomem2; + sb->s_root = d; + + /* EP0 file */ + if (unlikely(!ffs_sb_create_file(sb, "ep0", ffs, + &ffs_ep0_operations, NULL))) + goto enomem3; + + return 0; + +enomem3: + dput(d); +enomem2: + iput(inode); +enomem1: + ffs_data_put(ffs); +enomem0: + return -ENOMEM; +} + + +static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) +{ + ENTER(); + + if (!opts || !*opts) + return 0; + + for (;;) { + char *end, *eq, *comma; + unsigned long value; + + /* Option limit */ + comma = strchr(opts, ','); + if (comma) + *comma = 0; + + /* Value limit */ + eq = strchr(opts, '='); + if (unlikely(!eq)) { + FERR("'=' missing in %s", opts); + return -EINVAL; + } + *eq = 0; + + /* Parse value */ + value = simple_strtoul(eq + 1, &end, 0); + if (unlikely(*end != ',' && *end != 0)) { + FERR("%s: invalid value: %s", opts, eq + 1); + return -EINVAL; + } + + /* Interpret option */ + switch (eq - opts) { + case 5: + if (!memcmp(opts, "rmode", 5)) + data->root_mode = (value & 0555) | S_IFDIR; + else if (!memcmp(opts, "fmode", 5)) + data->perms.mode = (value & 0666) | S_IFREG; + else + goto invalid; + break; + + case 4: + if (!memcmp(opts, "mode", 4)) { + data->root_mode = (value & 0555) | S_IFDIR; + data->perms.mode = (value & 0666) | S_IFREG; + } else { + goto invalid; + } + break; + + case 3: + if (!memcmp(opts, "uid", 3)) + data->perms.uid = value; + else if (!memcmp(opts, "gid", 3)) + data->perms.gid = value; + else + goto invalid; + break; + + default: +invalid: + FERR("%s: invalid option", opts); + return -EINVAL; + } + + /* Next iteration */ + if (!comma) + break; + opts = comma + 1; + } + + return 0; +} + + +/* "mount -t functionfs dev_name /dev/function" ends up here */ + +static int +ffs_fs_get_sb(struct file_system_type *t, int flags, + const char *dev_name, void *opts, struct vfsmount *mnt) +{ + struct ffs_sb_fill_data data = { + .perms = { + .mode = S_IFREG | 0600, + .uid = 0, + .gid = 0 + }, + .root_mode = S_IFDIR | 0500, + }; + int ret; + + ENTER(); + + ret = functionfs_check_dev_callback(dev_name); + if (unlikely(ret < 0)) + return ret; + + ret = ffs_fs_parse_opts(&data, opts); + if (unlikely(ret < 0)) + return ret; + + data.dev_name = dev_name; + return get_sb_single(t, flags, &data, ffs_sb_fill, mnt); +} + +static void +ffs_fs_kill_sb(struct super_block *sb) +{ + void *ptr; + + ENTER(); + + kill_litter_super(sb); + ptr = xchg(&sb->s_fs_info, NULL); + if (ptr) + ffs_data_put(ptr); +} + +static struct file_system_type ffs_fs_type = { + .owner = THIS_MODULE, + .name = "functionfs", + .get_sb = ffs_fs_get_sb, + .kill_sb = ffs_fs_kill_sb, +}; + + + +/* Driver's main init/cleanup functions *************************************/ + + +static int functionfs_init(void) +{ + int ret; + + ENTER(); + + ret = register_filesystem(&ffs_fs_type); + if (likely(!ret)) + FINFO("file system registered"); + else + FERR("failed registering file system (%d)", ret); + + return ret; +} + +static void functionfs_cleanup(void) +{ + ENTER(); + + FINFO("unloading"); + unregister_filesystem(&ffs_fs_type); +} + + + +/* ffs_data and ffs_function construction and destruction code **************/ + +static void ffs_data_clear(struct ffs_data *ffs); +static void ffs_data_reset(struct ffs_data *ffs); + + +static void ffs_data_get(struct ffs_data *ffs) +{ + ENTER(); + + atomic_inc(&ffs->ref); +} + +static void ffs_data_opened(struct ffs_data *ffs) +{ + ENTER(); + + atomic_inc(&ffs->ref); + atomic_inc(&ffs->opened); +} + +static void ffs_data_put(struct ffs_data *ffs) +{ + ENTER(); + + if (unlikely(atomic_dec_and_test(&ffs->ref))) { + FINFO("%s(): freeing", __func__); + ffs_data_clear(ffs); + BUG_ON(mutex_is_locked(&ffs->mutex) || + spin_is_locked(&ffs->ev.waitq.lock) || + waitqueue_active(&ffs->ev.waitq) || + waitqueue_active(&ffs->ep0req_completion.wait)); + kfree(ffs); + } +} + + + +static void ffs_data_closed(struct ffs_data *ffs) +{ + ENTER(); + + if (atomic_dec_and_test(&ffs->opened)) { + ffs->state = FFS_CLOSING; + ffs_data_reset(ffs); + } + + ffs_data_put(ffs); +} + + +static struct ffs_data *ffs_data_new(void) +{ + struct ffs_data *ffs = kzalloc(sizeof *ffs, GFP_KERNEL); + if (unlikely(!ffs)) + return 0; + + ENTER(); + + atomic_set(&ffs->ref, 1); + atomic_set(&ffs->opened, 0); + ffs->state = FFS_READ_DESCRIPTORS; + mutex_init(&ffs->mutex); + spin_lock_init(&ffs->eps_lock); + init_waitqueue_head(&ffs->ev.waitq); + init_completion(&ffs->ep0req_completion); + + /* XXX REVISIT need to update it in some places, or do we? */ + ffs->ev.can_stall = 1; + + return ffs; +} + + +static void ffs_data_clear(struct ffs_data *ffs) +{ + ENTER(); + + if (test_and_clear_bit(FFS_FL_CALL_CLOSED_CALLBACK, &ffs->flags)) + functionfs_closed_callback(ffs); + + BUG_ON(ffs->gadget); + + if (ffs->epfiles) + ffs_epfiles_destroy(ffs->epfiles, ffs->eps_count); + + kfree(ffs->raw_descs); + kfree(ffs->raw_strings); + kfree(ffs->stringtabs); +} + + +static void ffs_data_reset(struct ffs_data *ffs) +{ + ENTER(); + + ffs_data_clear(ffs); + + ffs->epfiles = NULL; + ffs->raw_descs = NULL; + ffs->raw_strings = NULL; + ffs->stringtabs = NULL; + + ffs->raw_descs_length = 0; + ffs->raw_fs_descs_length = 0; + ffs->fs_descs_count = 0; + ffs->hs_descs_count = 0; + + ffs->strings_count = 0; + ffs->interfaces_count = 0; + ffs->eps_count = 0; + + ffs->ev.count = 0; + + ffs->state = FFS_READ_DESCRIPTORS; + ffs->setup_state = FFS_NO_SETUP; + ffs->flags = 0; +} + + +static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev) +{ + unsigned i, count; + + ENTER(); + + if (WARN_ON(ffs->state != FFS_ACTIVE + || test_and_set_bit(FFS_FL_BOUND, &ffs->flags))) + return -EBADFD; + + ffs_data_get(ffs); + + ffs->ep0req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL); + if (unlikely(!ffs->ep0req)) + return -ENOMEM; + ffs->ep0req->complete = ffs_ep0_complete; + ffs->ep0req->context = ffs; + + /* Get strings identifiers */ + for (count = ffs->strings_count, i = 0; i < count; ++i) { + struct usb_gadget_strings **lang; + + int id = usb_string_id(cdev); + if (unlikely(id < 0)) { + usb_ep_free_request(cdev->gadget->ep0, ffs->ep0req); + ffs->ep0req = NULL; + return id; + } + + lang = ffs->stringtabs; + do { + (*lang)->strings[i].id = id; + ++lang; + } while (*lang); + } + + ffs->gadget = cdev->gadget; + return 0; +} + + +static void functionfs_unbind(struct ffs_data *ffs) +{ + ENTER(); + + if (!WARN_ON(!ffs->gadget)) { + usb_ep_free_request(ffs->gadget->ep0, ffs->ep0req); + ffs->ep0req = NULL; + ffs->gadget = NULL; + ffs_data_put(ffs); + } +} + + +static int ffs_epfiles_create(struct ffs_data *ffs) +{ + struct ffs_epfile *epfile, *epfiles; + unsigned i, count; + + ENTER(); + + count = ffs->eps_count; + epfiles = kzalloc(count * sizeof *epfiles, GFP_KERNEL); + if (!epfiles) + return -ENOMEM; + + epfile = epfiles; + for (i = 1; i <= count; ++i, ++epfile) { + epfile->ffs = ffs; + mutex_init(&epfile->mutex); + init_waitqueue_head(&epfile->wait); + sprintf(epfiles->name, "ep%u", i); + if (!unlikely(ffs_sb_create_file(ffs->sb, epfiles->name, epfile, + &ffs_epfile_operations, + &epfile->dentry))) { + ffs_epfiles_destroy(epfiles, i - 1); + return -ENOMEM; + } + } + + ffs->epfiles = epfiles; + return 0; +} + + +static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) +{ + struct ffs_epfile *epfile = epfiles; + + ENTER(); + + for (; count; --count, ++epfile) { + BUG_ON(mutex_is_locked(&epfile->mutex) || + waitqueue_active(&epfile->wait)); + if (epfile->dentry) { + d_delete(epfile->dentry); + dput(epfile->dentry); + epfile->dentry = NULL; + } + } + + kfree(epfiles); +} + + +static int functionfs_add(struct usb_composite_dev *cdev, + struct usb_configuration *c, + struct ffs_data *ffs) +{ + struct ffs_function *func; + int ret; + + ENTER(); + + func = kzalloc(sizeof *func, GFP_KERNEL); + if (unlikely(!func)) + return -ENOMEM; + + func->function.name = "Function FS Gadget"; + func->function.strings = ffs->stringtabs; + + func->function.bind = ffs_func_bind; + func->function.unbind = ffs_func_unbind; + func->function.set_alt = ffs_func_set_alt; + /*func->function.get_alt = ffs_func_get_alt;*/ + func->function.disable = ffs_func_disable; + func->function.setup = ffs_func_setup; + func->function.suspend = ffs_func_suspend; + func->function.resume = ffs_func_resume; + + func->conf = c; + func->gadget = cdev->gadget; + func->ffs = ffs; + ffs_data_get(ffs); + + ret = usb_add_function(c, &func->function); + if (unlikely(ret)) + ffs_func_free(func); + + return ret; +} + +static void ffs_func_free(struct ffs_function *func) +{ + ENTER(); + + ffs_data_put(func->ffs); + + kfree(func->eps); + /* eps and interfaces_nums are allocated in the same chunk so + * only one free is required. Descriptors are also allocated + * in the same chunk. */ + + kfree(func); +} + + +static void ffs_func_eps_disable(struct ffs_function *func) +{ + struct ffs_ep *ep = func->eps; + struct ffs_epfile *epfile = func->ffs->epfiles; + unsigned count = func->ffs->eps_count; + unsigned long flags; + + spin_lock_irqsave(&func->ffs->eps_lock, flags); + do { + /* pending requests get nuked */ + if (likely(ep->ep)) + usb_ep_disable(ep->ep); + epfile->ep = NULL; + + ++ep; + ++epfile; + } while (--count); + spin_unlock_irqrestore(&func->ffs->eps_lock, flags); +} + +static int ffs_func_eps_enable(struct ffs_function *func) +{ + struct ffs_data *ffs = func->ffs; + struct ffs_ep *ep = func->eps; + struct ffs_epfile *epfile = ffs->epfiles; + unsigned count = ffs->eps_count; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&func->ffs->eps_lock, flags); + do { + struct usb_endpoint_descriptor *ds; + ds = ep->descs[ep->descs[1] ? 1 : 0]; + + ep->ep->driver_data = ep; + ret = usb_ep_enable(ep->ep, ds); + if (likely(!ret)) { + epfile->ep = ep; + epfile->in = usb_endpoint_dir_in(ds); + epfile->isoc = usb_endpoint_xfer_isoc(ds); + } else { + break; + } + + wake_up(&epfile->wait); + + ++ep; + ++epfile; + } while (--count); + spin_unlock_irqrestore(&func->ffs->eps_lock, flags); + + return ret; +} + + +/* Parsing and building descriptors and strings *****************************/ + + +/* This validates if data pointed by data is a valid USB descriptor as + * well as record how many interfaces, endpoints and strings are + * required by given configuration. Returns address afther the + * descriptor or NULL if data is invalid. */ + +enum ffs_entity_type { + FFS_DESCRIPTOR, FFS_INTERFACE, FFS_STRING, FFS_ENDPOINT +}; + +typedef int (*ffs_entity_callback)(enum ffs_entity_type entity, + u8 *valuep, + struct usb_descriptor_header *desc, + void *priv); + +static int __must_check ffs_do_desc(char *data, unsigned len, + ffs_entity_callback entity, void *priv) +{ + struct usb_descriptor_header *_ds = (void *)data; + u8 length; + int ret; + + ENTER(); + + /* At least two bytes are required: length and type */ + if (len < 2) { + FVDBG("descriptor too short"); + return -EINVAL; + } + + /* If we have at least as many bytes as the descriptor takes? */ + length = _ds->bLength; + if (len < length) { + FVDBG("descriptor longer then available data"); + return -EINVAL; + } + +#define __entity_check_INTERFACE(val) 1 +#define __entity_check_STRING(val) (val) +#define __entity_check_ENDPOINT(val) ((val) & USB_ENDPOINT_NUMBER_MASK) +#define __entity(type, val) do { \ + FVDBG("entity " #type "(%02x)", (val)); \ + if (unlikely(!__entity_check_ ##type(val))) { \ + FVDBG("invalid entity's value"); \ + return -EINVAL; \ + } \ + ret = entity(FFS_ ##type, &val, _ds, priv); \ + if (unlikely(ret < 0)) { \ + FDBG("entity " #type "(%02x); ret = %d", \ + (val), ret); \ + return ret; \ + } \ + } while (0) + + /* Parse descriptor depending on type. */ + switch (_ds->bDescriptorType) { + case USB_DT_DEVICE: + case USB_DT_CONFIG: + case USB_DT_STRING: + case USB_DT_DEVICE_QUALIFIER: + /* function can't have any of those */ + FVDBG("descriptor reserved for gadget: %d", _ds->bDescriptorType); + return -EINVAL; + + case USB_DT_INTERFACE: { + struct usb_interface_descriptor *ds = (void *)_ds; + FVDBG("interface descriptor"); + if (length != sizeof *ds) + goto inv_length; + + __entity(INTERFACE, ds->bInterfaceNumber); + if (ds->iInterface) + __entity(STRING, ds->iInterface); + } + break; + + case USB_DT_ENDPOINT: { + struct usb_endpoint_descriptor *ds = (void *)_ds; + FVDBG("endpoint descriptor"); + if (length != USB_DT_ENDPOINT_SIZE && + length != USB_DT_ENDPOINT_AUDIO_SIZE) + goto inv_length; + __entity(ENDPOINT, ds->bEndpointAddress); + } + break; + + case USB_DT_OTG: + if (length != sizeof(struct usb_otg_descriptor)) + goto inv_length; + break; + + case USB_DT_INTERFACE_ASSOCIATION: { + struct usb_interface_assoc_descriptor *ds = (void *)_ds; + FVDBG("interface association descriptor"); + if (length != sizeof *ds) + goto inv_length; + if (ds->iFunction) + __entity(STRING, ds->iFunction); + } + break; + + case USB_DT_OTHER_SPEED_CONFIG: + case USB_DT_INTERFACE_POWER: + case USB_DT_DEBUG: + case USB_DT_SECURITY: + case USB_DT_CS_RADIO_CONTROL: + /* TODO */ + FVDBG("unimplemented descriptor: %d", _ds->bDescriptorType); + return -EINVAL; + + default: + /* We should never be here */ + FVDBG("unknown descriptor: %d", _ds->bDescriptorType); + return -EINVAL; + + inv_length: + FVDBG("invalid length: %d (descriptor %d)", + _ds->bLength, _ds->bDescriptorType); + return -EINVAL; + } + +#undef __entity +#undef __entity_check_DESCRIPTOR +#undef __entity_check_INTERFACE +#undef __entity_check_STRING +#undef __entity_check_ENDPOINT + + return length; +} + + +static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, + ffs_entity_callback entity, void *priv) +{ + const unsigned _len = len; + unsigned long num = 0; + + ENTER(); + + for (;;) { + int ret; + + if (num == count) + data = NULL; + + /* Record "descriptor" entitny */ + ret = entity(FFS_DESCRIPTOR, (u8 *)num, (void *)data, priv); + if (unlikely(ret < 0)) { + FDBG("entity DESCRIPTOR(%02lx); ret = %d", num, ret); + return ret; + } + + if (!data) + return _len - len; + + ret = ffs_do_desc(data, len, entity, priv); + if (unlikely(ret < 0)) { + FDBG("%s returns %d", __func__, ret); + return ret; + } + + len -= ret; + data += ret; + ++num; + } +} + + +static int __ffs_data_do_entity(enum ffs_entity_type type, + u8 *valuep, struct usb_descriptor_header *desc, + void *priv) +{ + struct ffs_data *ffs = priv; + + ENTER(); + + switch (type) { + case FFS_DESCRIPTOR: + break; + + case FFS_INTERFACE: + /* Interfaces are indexed from zero so if we + * encountered interface "n" then there are at least + * "n+1" interfaces. */ + if (*valuep >= ffs->interfaces_count) + ffs->interfaces_count = *valuep + 1; + break; + + case FFS_STRING: + /* Strings are indexed from 1 (0 is magic ;) reserved + * for languages list or some such) */ + if (*valuep > ffs->strings_count) + ffs->strings_count = *valuep; + break; + + case FFS_ENDPOINT: + /* Endpoints are indexed from 1 as well. */ + if ((*valuep & USB_ENDPOINT_NUMBER_MASK) > ffs->eps_count) + ffs->eps_count = (*valuep & USB_ENDPOINT_NUMBER_MASK); + break; + } + + return 0; +} + + +static int __ffs_data_got_descs(struct ffs_data *ffs, + char *const _data, size_t len) +{ + unsigned fs_count, hs_count; + int fs_len, ret = -EINVAL; + char *data = _data; + + ENTER(); + + if (unlikely(get_unaligned_le32(data) != FUNCTIONFS_DESCRIPTORS_MAGIC || + get_unaligned_le32(data + 4) != len)) + goto error; + fs_count = get_unaligned_le32(data + 8); + hs_count = get_unaligned_le32(data + 12); + + if (!fs_count && !hs_count) + goto einval; + + data += 16; + len -= 16; + + if (likely(fs_count)) { + fs_len = ffs_do_descs(fs_count, data, len, + __ffs_data_do_entity, ffs); + if (unlikely(fs_len < 0)) { + ret = fs_len; + goto error; + } + + data += fs_len; + len -= fs_len; + } else { + fs_len = 0; + } + + if (likely(hs_count)) { + ret = ffs_do_descs(hs_count, data, len, + __ffs_data_do_entity, ffs); + if (unlikely(ret < 0)) + goto error; + } else { + ret = 0; + } + + if (unlikely(len != ret)) + goto einval; + + ffs->raw_fs_descs_length = fs_len; + ffs->raw_descs_length = fs_len + ret; + ffs->raw_descs = _data; + ffs->fs_descs_count = fs_count; + ffs->hs_descs_count = hs_count; + + return 0; + +einval: + ret = -EINVAL; +error: + kfree(_data); + return ret; +} + + + +static int __ffs_data_got_strings(struct ffs_data *ffs, + char *const _data, size_t len) +{ + u32 str_count, needed_count, lang_count; + struct usb_gadget_strings **stringtabs, *t; + struct usb_string *strings, *s; + const char *data = _data; + + ENTER(); + + if (unlikely(get_unaligned_le32(data) != FUNCTIONFS_STRINGS_MAGIC || + get_unaligned_le32(data + 4) != len)) + goto error; + str_count = get_unaligned_le32(data + 8); + lang_count = get_unaligned_le32(data + 12); + + /* if one is zero the other must be zero */ + if (unlikely(!str_count != !lang_count)) + goto error; + + /* Do we have at least as many strings as descriptors need? */ + needed_count = ffs->strings_count; + if (unlikely(str_count < needed_count)) + goto error; + + /* If we don't need any strings just return and free all + * memory */ + if (!needed_count) { + kfree(_data); + return 0; + } + + /* Allocate */ + { + /* Allocate everything in one chunk so there's less + * maintanance. */ + struct { + struct usb_gadget_strings *stringtabs[lang_count + 1]; + struct usb_gadget_strings stringtab[lang_count]; + struct usb_string strings[lang_count*(needed_count+1)]; + } *d; + unsigned i = 0; + + d = kmalloc(sizeof *d, GFP_KERNEL); + if (unlikely(!d)) { + kfree(_data); + return -ENOMEM; + } + + stringtabs = d->stringtabs; + t = d->stringtab; + i = lang_count; + do { + *stringtabs++ = t++; + } while (--i); + *stringtabs = NULL; + + stringtabs = d->stringtabs; + t = d->stringtab; + s = d->strings; + strings = s; + } + + /* For each language */ + data += 16; + len -= 16; + + do { /* lang_count > 0 so we can use do-while */ + unsigned needed = needed_count; + + if (unlikely(len < 3)) + goto error_free; + t->language = get_unaligned_le16(data); + t->strings = s; + ++t; + + data += 2; + len -= 2; + + /* For each string */ + do { /* str_count > 0 so we can use do-while */ + size_t length = strnlen(data, len); + + if (unlikely(length == len)) + goto error_free; + + /* user may provide more strings then we need, + * if that's the case we simply ingore the + * rest */ + if (likely(needed)) { + /* s->id will be set while adding + * function to configuration so for + * now just leave garbage here. */ + s->s = data; + --needed; + ++s; + } + + data += length + 1; + len -= length + 1; + } while (--str_count); + + s->id = 0; /* terminator */ + s->s = NULL; + ++s; + + } while (--lang_count); + + /* Some garbage left? */ + if (unlikely(len)) + goto error_free; + + /* Done! */ + ffs->stringtabs = stringtabs; + ffs->raw_strings = _data; + + return 0; + +error_free: + kfree(stringtabs); +error: + kfree(_data); + return -EINVAL; +} + + + + +/* Events handling and management *******************************************/ + +static void __ffs_event_add(struct ffs_data *ffs, + enum usb_functionfs_event_type type) +{ + enum usb_functionfs_event_type rem_type1, rem_type2 = type; + int neg = 0; + + /* Abort any unhandled setup */ + /* We do not need to worry about some cmpxchg() changing value + * of ffs->setup_state without holding the lock because when + * state is FFS_SETUP_PENDING cmpxchg() in several places in + * the source does nothing. */ + if (ffs->setup_state == FFS_SETUP_PENDING) + ffs->setup_state = FFS_SETUP_CANCELED; + + switch (type) { + case FUNCTIONFS_RESUME: + rem_type2 = FUNCTIONFS_SUSPEND; + /* FALL THGOUTH */ + case FUNCTIONFS_SUSPEND: + case FUNCTIONFS_SETUP: + rem_type1 = type; + /* discard all similar events */ + break; + + case FUNCTIONFS_BIND: + case FUNCTIONFS_UNBIND: + case FUNCTIONFS_DISABLE: + case FUNCTIONFS_ENABLE: + /* discard everything other then power management. */ + rem_type1 = FUNCTIONFS_SUSPEND; + rem_type2 = FUNCTIONFS_RESUME; + neg = 1; + break; + + default: + BUG(); + } + + { + u8 *ev = ffs->ev.types, *out = ev; + unsigned n = ffs->ev.count; + for (; n; --n, ++ev) + if ((*ev == rem_type1 || *ev == rem_type2) == neg) + *out++ = *ev; + else + FVDBG("purging event %d", *ev); + ffs->ev.count = out - ffs->ev.types; + } + + FVDBG("adding event %d", type); + ffs->ev.types[ffs->ev.count++] = type; + wake_up_locked(&ffs->ev.waitq); +} + +static void ffs_event_add(struct ffs_data *ffs, + enum usb_functionfs_event_type type) +{ + unsigned long flags; + spin_lock_irqsave(&ffs->ev.waitq.lock, flags); + __ffs_event_add(ffs, type); + spin_unlock_irqrestore(&ffs->ev.waitq.lock, flags); +} + + +/* Bind/unbind USB function hooks *******************************************/ + +static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, + struct usb_descriptor_header *desc, + void *priv) +{ + struct usb_endpoint_descriptor *ds = (void *)desc; + struct ffs_function *func = priv; + struct ffs_ep *ffs_ep; + + /* If hs_descriptors is not NULL then we are reading hs + * descriptors now */ + const int isHS = func->function.hs_descriptors != NULL; + unsigned idx; + + if (type != FFS_DESCRIPTOR) + return 0; + + if (isHS) + func->function.hs_descriptors[(long)valuep] = desc; + else + func->function.descriptors[(long)valuep] = desc; + + if (!desc || desc->bDescriptorType != USB_DT_ENDPOINT) + return 0; + + idx = (ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) - 1; + ffs_ep = func->eps + idx; + + if (unlikely(ffs_ep->descs[isHS])) { + FVDBG("two %sspeed descriptors for EP %d", + isHS ? "high" : "full", + ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + return -EINVAL; + } + ffs_ep->descs[isHS] = ds; + + ffs_dump_mem(": Original ep desc", ds, ds->bLength); + if (ffs_ep->ep) { + ds->bEndpointAddress = ffs_ep->descs[0]->bEndpointAddress; + if (!ds->wMaxPacketSize) + ds->wMaxPacketSize = ffs_ep->descs[0]->wMaxPacketSize; + } else { + struct usb_request *req; + struct usb_ep *ep; + + FVDBG("autoconfig"); + ep = usb_ep_autoconfig(func->gadget, ds); + if (unlikely(!ep)) + return -ENOTSUPP; + ep->driver_data = func->eps + idx;; + + req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (unlikely(!req)) + return -ENOMEM; + + ffs_ep->ep = ep; + ffs_ep->req = req; + func->eps_revmap[ds->bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK] = idx + 1; + } + ffs_dump_mem(": Rewritten ep desc", ds, ds->bLength); + + return 0; +} + + +static int __ffs_func_bind_do_nums(enum ffs_entity_type type, u8 *valuep, + struct usb_descriptor_header *desc, + void *priv) +{ + struct ffs_function *func = priv; + unsigned idx; + u8 newValue; + + switch (type) { + default: + case FFS_DESCRIPTOR: + /* Handled in previous pass by __ffs_func_bind_do_descs() */ + return 0; + + case FFS_INTERFACE: + idx = *valuep; + if (func->interfaces_nums[idx] < 0) { + int id = usb_interface_id(func->conf, &func->function); + if (unlikely(id < 0)) + return id; + func->interfaces_nums[idx] = id; + } + newValue = func->interfaces_nums[idx]; + break; + + case FFS_STRING: + /* String' IDs are allocated when fsf_data is bound to cdev */ + newValue = func->ffs->stringtabs[0]->strings[*valuep - 1].id; + break; + + case FFS_ENDPOINT: + /* USB_DT_ENDPOINT are handled in + * __ffs_func_bind_do_descs(). */ + if (desc->bDescriptorType == USB_DT_ENDPOINT) + return 0; + + idx = (*valuep & USB_ENDPOINT_NUMBER_MASK) - 1; + if (unlikely(!func->eps[idx].ep)) + return -EINVAL; + + { + struct usb_endpoint_descriptor **descs; + descs = func->eps[idx].descs; + newValue = descs[descs[0] ? 0 : 1]->bEndpointAddress; + } + break; + } + + FVDBG("%02x -> %02x", *valuep, newValue); + *valuep = newValue; + return 0; +} + +static int ffs_func_bind(struct usb_configuration *c, + struct usb_function *f) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + + const int full = !!func->ffs->fs_descs_count; + const int high = gadget_is_dualspeed(func->gadget) && + func->ffs->hs_descs_count; + + int ret; + + /* Make it a single chunk, less management later on */ + struct { + struct ffs_ep eps[ffs->eps_count]; + struct usb_descriptor_header + *fs_descs[full ? ffs->fs_descs_count + 1 : 0]; + struct usb_descriptor_header + *hs_descs[high ? ffs->hs_descs_count + 1 : 0]; + short inums[ffs->interfaces_count]; + char raw_descs[high ? ffs->raw_descs_length + : ffs->raw_fs_descs_length]; + } *data; + + ENTER(); + + /* Only high speed but not supported by gadget? */ + if (unlikely(!(full | high))) + return -ENOTSUPP; + + /* Allocate */ + data = kmalloc(sizeof *data, GFP_KERNEL); + if (unlikely(!data)) + return -ENOMEM; + + /* Zero */ + memset(data->eps, 0, sizeof data->eps); + memcpy(data->raw_descs, ffs->raw_descs + 16, sizeof data->raw_descs); + memset(data->inums, 0xff, sizeof data->inums); + for (ret = ffs->eps_count; ret; --ret) + data->eps[ret].num = -1; + + /* Save pointers */ + func->eps = data->eps; + func->interfaces_nums = data->inums; + + /* Go throught all the endpoint descriptors and allocate + * endpoints first, so that later we can rewrite the endpoint + * numbers without worying that it may be described later on. */ + if (likely(full)) { + func->function.descriptors = data->fs_descs; + ret = ffs_do_descs(ffs->fs_descs_count, + data->raw_descs, + sizeof data->raw_descs, + __ffs_func_bind_do_descs, func); + if (unlikely(ret < 0)) + goto error; + } else { + ret = 0; + } + + if (likely(high)) { + func->function.hs_descriptors = data->hs_descs; + ret = ffs_do_descs(ffs->hs_descs_count, + data->raw_descs + ret, + (sizeof data->raw_descs) - ret, + __ffs_func_bind_do_descs, func); + } + + /* Now handle interface numbers allocation and interface and + * enpoint numbers rewritting. We can do that in one go + * now. */ + ret = ffs_do_descs(ffs->fs_descs_count + + (high ? ffs->hs_descs_count : 0), + data->raw_descs, sizeof data->raw_descs, + __ffs_func_bind_do_nums, func); + if (unlikely(ret < 0)) + goto error; + + /* And we're done */ + ffs_event_add(ffs, FUNCTIONFS_BIND); + return 0; + +error: + /* XXX Do we need to release all claimed endpoints here? */ + return ret; +} + + +/* Other USB function hooks *************************************************/ + +static void ffs_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + + ENTER(); + + if (ffs->func == func) { + ffs_func_eps_disable(func); + ffs->func = NULL; + } + + ffs_event_add(ffs, FUNCTIONFS_UNBIND); + + ffs_func_free(func); +} + + +static int ffs_func_set_alt(struct usb_function *f, + unsigned interface, unsigned alt) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + int ret = 0, intf; + + if (alt != (unsigned)-1) { + intf = ffs_func_revmap_intf(func, interface); + if (unlikely(intf < 0)) + return intf; + } + + if (ffs->func) + ffs_func_eps_disable(ffs->func); + + if (ffs->state != FFS_ACTIVE) + return -ENODEV; + + if (alt == (unsigned)-1) { + ffs->func = NULL; + ffs_event_add(ffs, FUNCTIONFS_DISABLE); + return 0; + } + + ffs->func = func; + ret = ffs_func_eps_enable(func); + if (likely(ret >= 0)) + ffs_event_add(ffs, FUNCTIONFS_ENABLE); + return ret; +} + +static void ffs_func_disable(struct usb_function *f) +{ + ffs_func_set_alt(f, 0, (unsigned)-1); +} + +static int ffs_func_setup(struct usb_function *f, + const struct usb_ctrlrequest *creq) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + unsigned long flags; + int ret; + + ENTER(); + + FVDBG("creq->bRequestType = %02x", creq->bRequestType); + FVDBG("creq->bRequest = %02x", creq->bRequest); + FVDBG("creq->wValue = %04x", le16_to_cpu(creq->wValue)); + FVDBG("creq->wIndex = %04x", le16_to_cpu(creq->wIndex)); + FVDBG("creq->wLength = %04x", le16_to_cpu(creq->wLength)); + + /* Most requests directed to interface go throught here + * (notable exceptions are set/get interface) so we need to + * handle them. All other either handled by composite or + * passed to usb_configuration->setup() (if one is set). No + * matter, we will handle requests directed to endpoint here + * as well (as it's straightforward) but what to do with any + * other request? */ + + if (ffs->state != FFS_ACTIVE) + return -ENODEV; + + switch (creq->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: + ret = ffs_func_revmap_intf(func, le16_to_cpu(creq->wIndex)); + if (unlikely(ret < 0)) + return ret; + break; + + case USB_RECIP_ENDPOINT: + ret = ffs_func_revmap_ep(func, le16_to_cpu(creq->wIndex)); + if (unlikely(ret < 0)) + return ret; + break; + + default: + return -EOPNOTSUPP; + } + + spin_lock_irqsave(&ffs->ev.waitq.lock, flags); + ffs->ev.setup = *creq; + ffs->ev.setup.wIndex = cpu_to_le16(ret); + __ffs_event_add(ffs, FUNCTIONFS_SETUP); + spin_unlock_irqrestore(&ffs->ev.waitq.lock, flags); + + return 0; +} + +static void ffs_func_suspend(struct usb_function *f) +{ + ENTER(); + ffs_event_add(ffs_func_from_usb(f)->ffs, FUNCTIONFS_SUSPEND); +} + +static void ffs_func_resume(struct usb_function *f) +{ + ENTER(); + ffs_event_add(ffs_func_from_usb(f)->ffs, FUNCTIONFS_RESUME); +} + + + +/* Enpoint and interface numbers reverse mapping ****************************/ + +static int ffs_func_revmap_ep(struct ffs_function *func, u8 num) +{ + num = func->eps_revmap[num & USB_ENDPOINT_NUMBER_MASK]; + return num ? num : -EDOM; +} + +static int ffs_func_revmap_intf(struct ffs_function *func, u8 intf) +{ + short *nums = func->interfaces_nums; + unsigned count = func->ffs->interfaces_count; + + for (; count; --count, ++nums) { + if (*nums >= 0 && *nums == intf) + return nums - func->interfaces_nums; + } + + return -EDOM; +} + + +/* Misc helper functions ****************************************************/ + +static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) +{ + return nonblock + ? likely(mutex_trylock(mutex)) ? 0 : -EAGAIN + : mutex_lock_interruptible(mutex); +} + + +static char *ffs_prepare_buffer(const char * __user buf, size_t len) +{ + char *data; + + if (unlikely(!len)) + return NULL; + + data = kmalloc(len, GFP_KERNEL); + if (unlikely(!data)) + return ERR_PTR(-ENOMEM); + + if (unlikely(__copy_from_user(data, buf, len))) { + kfree(data); + return ERR_PTR(-EFAULT); + } + + FVDBG("Buffer from user space:"); + ffs_dump_mem("", data, len); + + return data; +} diff --git a/include/linux/usb/functionfs.h b/include/linux/usb/functionfs.h new file mode 100644 index 000000000000..a34a2a043b21 --- /dev/null +++ b/include/linux/usb/functionfs.h @@ -0,0 +1,199 @@ +#ifndef __LINUX_FUNCTIONFS_H__ +#define __LINUX_FUNCTIONFS_H__ 1 + + +#include +#include + +#include + + +enum { + FUNCTIONFS_DESCRIPTORS_MAGIC = 1, + FUNCTIONFS_STRINGS_MAGIC = 2 +}; + + +#ifndef __KERNEL__ + +/* Descriptor of an non-audio endpoint */ +struct usb_endpoint_descriptor_no_audio { + __u8 bLength; + __u8 bDescriptorType; + + __u8 bEndpointAddress; + __u8 bmAttributes; + __le16 wMaxPacketSize; + __u8 bInterval; +} __attribute__((packed)); + + +/* + * All numbers must be in little endian order. + */ + +struct usb_functionfs_descs_head { + __le32 magic; + __le32 length; + __le32 fs_count; + __le32 hs_count; +} __attribute__((packed)); + +/* + * Descriptors format: + * + * | off | name | type | description | + * |-----+-----------+--------------+--------------------------------------| + * | 0 | magic | LE32 | FUNCTIONFS_{FS,HS}_DESCRIPTORS_MAGIC | + * | 4 | lenght | LE32 | length of the whole data chunk | + * | 8 | fs_count | LE32 | number of full-speed descriptors | + * | 12 | hs_count | LE32 | number of high-speed descriptors | + * | 16 | fs_descrs | Descriptor[] | list of full-speed descriptors | + * | | hs_descrs | Descriptor[] | list of high-speed descriptors | + * + * descs are just valid USB descriptors and have the following format: + * + * | off | name | type | description | + * |-----+-----------------+------+--------------------------| + * | 0 | bLength | U8 | length of the descriptor | + * | 1 | bDescriptorType | U8 | descriptor type | + * | 2 | payload | | descriptor's payload | + */ + +struct usb_functionfs_strings_head { + __le32 magic; + __le32 length; + __le32 str_count; + __le32 lang_count; +} __attribute__((packed)); + +/* + * Strings format: + * + * | off | name | type | description | + * |-----+------------+-----------------------+----------------------------| + * | 0 | magic | LE32 | FUNCTIONFS_STRINGS_MAGIC | + * | 4 | length | LE32 | length of the data chunk | + * | 8 | str_count | LE32 | number of strings | + * | 12 | lang_count | LE32 | number of languages | + * | 16 | stringtab | StringTab[lang_count] | table of strings per lang | + * + * For each language there is one stringtab entry (ie. there are lang_count + * stringtab entires). Each StringTab has following format: + * + * | off | name | type | description | + * |-----+---------+-------------------+------------------------------------| + * | 0 | lang | LE16 | language code | + * | 2 | strings | String[str_count] | array of strings in given language | + * + * For each string ther is one strings entry (ie. there are str_count + * string entries). Each String is a NUL terminated string encoded in + * UTF-8. + */ + +#endif + + +/* + * Events are delivered on the ep0 file descriptor, when the user mode driver + * reads from this file descriptor after writing the descriptors. Don't + * stop polling this descriptor. + */ + +enum usb_functionfs_event_type { + FUNCTIONFS_BIND, + FUNCTIONFS_UNBIND, + + FUNCTIONFS_ENABLE, + FUNCTIONFS_DISABLE, + + FUNCTIONFS_SETUP, + + FUNCTIONFS_SUSPEND, + FUNCTIONFS_RESUME +}; + +/* NOTE: this structure must stay the same size and layout on + * both 32-bit and 64-bit kernels. + */ +struct usb_functionfs_event { + union { + /* SETUP: packet; DATA phase i/o precedes next event + *(setup.bmRequestType & USB_DIR_IN) flags direction */ + struct usb_ctrlrequest setup; + } __attribute__((packed)) u; + + /* enum usb_functionfs_event_type */ + __u8 type; + __u8 _pad[3]; +} __attribute__((packed)); + + +/* Endpoint ioctls */ +/* The same as in gadgetfs */ + +/* IN transfers may be reported to the gadget driver as complete + * when the fifo is loaded, before the host reads the data; + * OUT transfers may be reported to the host's "client" driver as + * complete when they're sitting in the FIFO unread. + * THIS returns how many bytes are "unclaimed" in the endpoint fifo + * (needed for precise fault handling, when the hardware allows it) + */ +#define FUNCTIONFS_FIFO_STATUS _IO('g', 1) + +/* discards any unclaimed data in the fifo. */ +#define FUNCTIONFS_FIFO_FLUSH _IO('g', 2) + +/* resets endpoint halt+toggle; used to implement set_interface. + * some hardware (like pxa2xx) can't support this. + */ +#define FUNCTIONFS_CLEAR_HALT _IO('g', 3) + +/* Specific for functionfs */ + +/* + * Returns reverse mapping of an interface. Called on EP0. If there + * is no such interface returns -EDOM. If function is not active + * returns -ENODEV. + */ +#define FUNCTIONFS_INTERFACE_REVMAP _IO('g', 128) + +/* + * Returns real bEndpointAddress of an endpoint. If function is not + * active returns -ENODEV. + */ +#define FUNCTIONFS_ENDPOINT_REVMAP _IO('g', 129) + + +#ifdef __KERNEL__ + +struct ffs_data; +struct usb_composite_dev; +struct usb_configuration; + + +static int functionfs_init(void) __attribute__((warn_unused_result)); +static void functionfs_cleanup(void); + +static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev) + __attribute__((warn_unused_result, nonnull)); +static void functionfs_unbind(struct ffs_data *ffs) + __attribute__((nonnull)); + +static int functionfs_add(struct usb_composite_dev *cdev, + struct usb_configuration *c, + struct ffs_data *ffs) + __attribute__((warn_unused_result, nonnull)); + + +static int functionfs_ready_callback(struct ffs_data *ffs) + __attribute__((warn_unused_result, nonnull)); +static void functionfs_closed_callback(struct ffs_data *ffs) + __attribute__((nonnull)); +static int functionfs_check_dev_callback(const char *dev_name) + __attribute__((warn_unused_result, nonnull)); + + +#endif + +#endif -- cgit v1.2.3-58-ga151 From c6c560085172c16a0141ab12ae765c7d1be68279 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 5 May 2010 12:53:15 +0200 Subject: USB: g_ffs: the FunctionFS gadget driver The Function Filesystem (FunctioFS) lets one create USB composite functions in user space in the same way as GadgetFS lets one create USB gadgets in user space. This allows creation of composite gadgets such that some of the functions are implemented in kernel space (for instance Ethernet, serial or mass storage) and other are implemented in user space. Signed-off-by: Michal Nazarewicz Cc: Kyungmin Park Cc: Marek Szyprowski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 37 ++++ drivers/usb/gadget/Makefile | 2 + drivers/usb/gadget/g_ffs.c | 426 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 465 insertions(+) create mode 100644 drivers/usb/gadget/g_ffs.c (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 96e1494723ad..0282c50d6404 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -710,6 +710,43 @@ config USB_GADGETFS Say "y" to link the driver statically, or "m" to build a dynamically linked module called "gadgetfs". +config USB_FUNCTIONFS + tristate "Function Filesystem (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + The Function Filesystem (FunctioFS) lets one create USB + composite functions in user space in the same way as GadgetFS + lets one create USB gadgets in user space. This allows creation + of composite gadgets such that some of the functions are + implemented in kernel space (for instance Ethernet, serial or + mass storage) and other are implemented in user space. + + Say "y" to link the driver statically, or "m" to build + a dynamically linked module called "g_ffs". + +config USB_FUNCTIONFS_ETH + bool "Include CDC ECM (Ethernet) function" + depends on USB_FUNCTIONFS + help + Include an CDC ECM (Ethernet) funcion in the CDC ECM (Funcion) + Filesystem. If you also say "y" to the RNDIS query below the + gadget will have two configurations. + +config USB_FUNCTIONFS_RNDIS + bool "Include RNDIS (Ethernet) function" + depends on USB_FUNCTIONFS + help + Include an RNDIS (Ethernet) funcion in the Funcion Filesystem. + If you also say "y" to the CDC ECM query above the gadget will + have two configurations. + +config USB_FUNCTIONFS_GENERIC + bool "Include 'pure' configuration" + depends on USB_FUNCTIONFS && (USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS) + help + Include a configuration with FunctionFS and no Ethernet + configuration. + config USB_FILE_STORAGE tristate "File-backed Storage Gadget" depends on BLOCK diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 03a27d921c26..a55050c17893 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -51,6 +51,8 @@ obj-$(CONFIG_USB_ZERO) += g_zero.o obj-$(CONFIG_USB_AUDIO) += g_audio.o obj-$(CONFIG_USB_ETH) += g_ether.o obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o +obj-$(CONFIG_USB_FUNCTIONFS) += g_ffs.o +obj-$(CONFIG_USB_ETH_FUNCTIONFS) += g_eth_ffs.o obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o obj-$(CONFIG_USB_MASS_STORAGE) += g_mass_storage.o obj-$(CONFIG_USB_G_SERIAL) += g_serial.o diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c new file mode 100644 index 000000000000..4b0e4a040d6f --- /dev/null +++ b/drivers/usb/gadget/g_ffs.c @@ -0,0 +1,426 @@ +#include +#include + + +/* + * kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ + +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS +# if defined USB_ETH_RNDIS +# undef USB_ETH_RNDIS +# endif +# ifdef CONFIG_USB_FUNCTIONFS_RNDIS +# define USB_ETH_RNDIS y +# endif + +# include "f_ecm.c" +# include "f_subset.c" +# ifdef USB_ETH_RNDIS +# include "f_rndis.c" +# include "rndis.c" +# endif +# include "u_ether.c" + +static u8 gfs_hostaddr[ETH_ALEN]; +#else +# if !defined CONFIG_USB_FUNCTIONFS_GENERIC +# define CONFIG_USB_FUNCTIONFS_GENERIC +# endif +# define gether_cleanup() do { } while (0) +# define gether_setup(gadget, hostaddr) ((int)0) +#endif + +#include "f_fs.c" + + +#define DRIVER_NAME "g_ffs" +#define DRIVER_DESC "USB Function Filesystem" +#define DRIVER_VERSION "24 Aug 2004" + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Michal Nazarewicz"); +MODULE_LICENSE("GPL"); + + +static unsigned short gfs_vendor_id = 0x0525; /* XXX NetChip */ +static unsigned short gfs_product_id = 0xa4ac; /* XXX */ + +static struct usb_device_descriptor gfs_dev_desc = { + .bLength = sizeof gfs_dev_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_PER_INTERFACE, + + /* Vendor and product id can be overridden by module parameters. */ + /* .idVendor = cpu_to_le16(gfs_vendor_id), */ + /* .idProduct = cpu_to_le16(gfs_product_id), */ + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +#define GFS_MODULE_PARAM_DESC(name, field) \ + MODULE_PARM_DESC(name, "Value of the " #field " field of the device descriptor sent to the host. Takes effect only prior to the user-space driver registering to the FunctionFS.") + +module_param_named(usb_class, gfs_dev_desc.bDeviceClass, byte, 0644); +GFS_MODULE_PARAM_DESC(usb_class, bDeviceClass); +module_param_named(usb_subclass, gfs_dev_desc.bDeviceSubClass, byte, 0644); +GFS_MODULE_PARAM_DESC(usb_subclass, bDeviceSubClass); +module_param_named(usb_protocol, gfs_dev_desc.bDeviceProtocol, byte, 0644); +GFS_MODULE_PARAM_DESC(usb_protocol, bDeviceProtocol); +module_param_named(usb_vendor, gfs_vendor_id, ushort, 0644); +GFS_MODULE_PARAM_DESC(usb_vendor, idVendor); +module_param_named(usb_product, gfs_product_id, ushort, 0644); +GFS_MODULE_PARAM_DESC(usb_product, idProduct); + + + +static const struct usb_descriptor_header *gfs_otg_desc[] = { + (const struct usb_descriptor_header *) + &(const struct usb_otg_descriptor) { + .bLength = sizeof(struct usb_otg_descriptor), + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, + }, + + NULL +}; + +/* string IDs are assigned dynamically */ + +enum { + GFS_STRING_MANUFACTURER_IDX, + GFS_STRING_PRODUCT_IDX, +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + GFS_STRING_RNDIS_CONFIG_IDX, +#endif +#ifdef CONFIG_USB_FUNCTIONFS_ETH + GFS_STRING_ECM_CONFIG_IDX, +#endif +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC + GFS_STRING_GENERIC_CONFIG_IDX, +#endif +}; + +static char gfs_manufacturer[50]; +static const char gfs_driver_desc[] = DRIVER_DESC; +static const char gfs_short_name[] = DRIVER_NAME; + +static struct usb_string gfs_strings[] = { + [GFS_STRING_MANUFACTURER_IDX].s = gfs_manufacturer, + [GFS_STRING_PRODUCT_IDX].s = gfs_driver_desc, +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + [GFS_STRING_RNDIS_CONFIG_IDX].s = "FunctionFS + RNDIS", +#endif +#ifdef CONFIG_USB_FUNCTIONFS_ETH + [GFS_STRING_ECM_CONFIG_IDX].s = "FunctionFS + ECM", +#endif +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC + [GFS_STRING_GENERIC_CONFIG_IDX].s = "FunctionFS", +#endif + { } /* end of list */ +}; + +static struct usb_gadget_strings *gfs_dev_strings[] = { + &(struct usb_gadget_strings) { + .language = 0x0409, /* en-us */ + .strings = gfs_strings, + }, + NULL, +}; + + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS +static int gfs_do_rndis_config(struct usb_configuration *c); + +static struct usb_configuration gfs_rndis_config_driver = { + .label = "FunctionFS + RNDIS", + .bind = gfs_do_rndis_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; +# define gfs_add_rndis_config(cdev) \ + usb_add_config(cdev, &gfs_rndis_config_driver) +#else +# define gfs_add_rndis_config(cdev) 0 +#endif + + +#ifdef CONFIG_USB_FUNCTIONFS_ETH +static int gfs_do_ecm_config(struct usb_configuration *c); + +static struct usb_configuration gfs_ecm_config_driver = { + .label = "FunctionFS + ECM", + .bind = gfs_do_ecm_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; +# define gfs_add_ecm_config(cdev) \ + usb_add_config(cdev, &gfs_ecm_config_driver) +#else +# define gfs_add_ecm_config(cdev) 0 +#endif + + +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC +static int gfs_do_generic_config(struct usb_configuration *c); + +static struct usb_configuration gfs_generic_config_driver = { + .label = "FunctionFS", + .bind = gfs_do_generic_config, + .bConfigurationValue = 2, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; +# define gfs_add_generic_config(cdev) \ + usb_add_config(cdev, &gfs_generic_config_driver) +#else +# define gfs_add_generic_config(cdev) 0 +#endif + + +static int gfs_bind(struct usb_composite_dev *cdev); +static int gfs_unbind(struct usb_composite_dev *cdev); + +static struct usb_composite_driver gfs_driver = { + .name = gfs_short_name, + .dev = &gfs_dev_desc, + .strings = gfs_dev_strings, + .bind = gfs_bind, + .unbind = gfs_unbind, +}; + + +static struct ffs_data *gfs_ffs_data; +static unsigned long gfs_registered; + + +static int gfs_init(void) +{ + ENTER(); + + return functionfs_init(); +} +module_init(gfs_init); + +static void gfs_exit(void) +{ + ENTER(); + + if (test_and_clear_bit(0, &gfs_registered)) + usb_composite_unregister(&gfs_driver); + + functionfs_cleanup(); +} +module_exit(gfs_exit); + + +static int functionfs_ready_callback(struct ffs_data *ffs) +{ + int ret; + + ENTER(); + + if (WARN_ON(test_and_set_bit(0, &gfs_registered))) + return -EBUSY; + + gfs_ffs_data = ffs; + ret = usb_composite_register(&gfs_driver); + if (unlikely(ret < 0)) + clear_bit(0, &gfs_registered); + return ret; +} + +static void functionfs_closed_callback(struct ffs_data *ffs) +{ + ENTER(); + + if (test_and_clear_bit(0, &gfs_registered)) + usb_composite_unregister(&gfs_driver); +} + + +static int functionfs_check_dev_callback(const char *dev_name) +{ + return 0; +} + + + +static int gfs_bind(struct usb_composite_dev *cdev) +{ + int ret; + + ENTER(); + + if (WARN_ON(!gfs_ffs_data)) + return -ENODEV; + + ret = gether_setup(cdev->gadget, gfs_hostaddr); + if (unlikely(ret < 0)) + goto error_quick; + + gfs_dev_desc.idVendor = cpu_to_le16(gfs_vendor_id); + gfs_dev_desc.idProduct = cpu_to_le16(gfs_product_id); + + snprintf(gfs_manufacturer, sizeof gfs_manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + cdev->gadget->name); + ret = usb_string_id(cdev); + if (unlikely(ret < 0)) + goto error; + gfs_strings[GFS_STRING_MANUFACTURER_IDX].id = ret; + gfs_dev_desc.iManufacturer = ret; + + ret = usb_string_id(cdev); + if (unlikely(ret < 0)) + goto error; + gfs_strings[GFS_STRING_PRODUCT_IDX].id = ret; + gfs_dev_desc.iProduct = ret; + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + ret = usb_string_id(cdev); + if (unlikely(ret < 0)) + goto error; + gfs_strings[GFS_STRING_RNDIS_CONFIG_IDX].id = ret; + gfs_rndis_config_driver.iConfiguration = ret; +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_ETH + ret = usb_string_id(cdev); + if (unlikely(ret < 0)) + goto error; + gfs_strings[GFS_STRING_ECM_CONFIG_IDX].id = ret; + gfs_ecm_config_driver.iConfiguration = ret; +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC + ret = usb_string_id(cdev); + if (unlikely(ret < 0)) + goto error; + gfs_strings[GFS_STRING_GENERIC_CONFIG_IDX].id = ret; + gfs_generic_config_driver.iConfiguration = ret; +#endif + + ret = functionfs_bind(gfs_ffs_data, cdev); + if (unlikely(ret < 0)) + goto error; + + ret = gfs_add_rndis_config(cdev); + if (unlikely(ret < 0)) + goto error_unbind; + + ret = gfs_add_ecm_config(cdev); + if (unlikely(ret < 0)) + goto error_unbind; + + ret = gfs_add_generic_config(cdev); + if (unlikely(ret < 0)) + goto error_unbind; + + return 0; + +error_unbind: + functionfs_unbind(gfs_ffs_data); +error: + gether_cleanup(); +error_quick: + gfs_ffs_data = NULL; + return ret; +} + +static int gfs_unbind(struct usb_composite_dev *cdev) +{ + ENTER(); + + /* We may have been called in an error recovery frem + * composite_bind() after gfs_unbind() failure so we need to + * check if gfs_ffs_data is not NULL since gfs_bind() handles + * all error recovery itself. I'd rather we werent called + * from composite on orror recovery, but what you're gonna + * do...? */ + + if (gfs_ffs_data) { + gether_cleanup(); + functionfs_unbind(gfs_ffs_data); + gfs_ffs_data = NULL; + } + + return 0; +} + + +static int __gfs_do_config(struct usb_configuration *c, + int (*eth)(struct usb_configuration *c, u8 *ethaddr), + u8 *ethaddr) +{ + int ret; + + if (WARN_ON(!gfs_ffs_data)) + return -ENODEV; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = gfs_otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + if (eth) { + ret = eth(c, ethaddr); + if (unlikely(ret < 0)) + return ret; + } + + ret = functionfs_add(c->cdev, c, gfs_ffs_data); + if (unlikely(ret < 0)) + return ret; + + return 0; +} + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS +static int gfs_do_rndis_config(struct usb_configuration *c) +{ + ENTER(); + + return __gfs_do_config(c, rndis_bind_config, gfs_hostaddr); +} +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_ETH +static int gfs_do_ecm_config(struct usb_configuration *c) +{ + ENTER(); + + return __gfs_do_config(c, + can_support_ecm(c->cdev->gadget) + ? ecm_bind_config : geth_bind_config, + gfs_hostaddr); +} +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC +static int gfs_do_generic_config(struct usb_configuration *c) +{ + ENTER(); + + return __gfs_do_config(c, NULL, NULL); +} +#endif -- cgit v1.2.3-58-ga151 From 5e5cf6fc59db2322dfe3ac8e1002f066b06d868f Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 6 May 2010 13:40:18 -0700 Subject: USB: xhci: Set stream ID to 0 after cleaning up stalls. After using state stored in xhci_virt_ep to clean up a stalled endpoint, be sure to set the stalled stream ID back to 0. Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 1 + drivers/usb/host/xhci.c | 1 + 2 files changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index a67caef265b1..15f02e88f329 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1166,6 +1166,7 @@ static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, ep->stopped_td = NULL; ep->stopped_trb = NULL; + ep->stopped_stream = 0; xhci_ring_cmd_db(xhci); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index a9b836d4b290..40e0a0c221b8 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1457,6 +1457,7 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, } virt_ep->stopped_td = NULL; virt_ep->stopped_trb = NULL; + virt_ep->stopped_stream = 0; spin_unlock_irqrestore(&xhci->lock, flags); if (ret) -- cgit v1.2.3-58-ga151 From 1d6ec813e2b2f82666230fc3c0fbf13032da945e Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 6 May 2010 16:46:03 -0700 Subject: USB: fix u132-hcd code/data warning Fix gcc warning on mixed declarations/code: drivers/usb/host/u132-hcd.c:1450: warning: ISO C90 forbids mixed declarations and code Signed-off-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/u132-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 11a97d93dff2..5b31bae92dbc 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -1446,9 +1446,9 @@ static void u132_hcd_endp_work_scheduler(struct work_struct *work) return; } else { int retval; - address = u132->addr[endp->usb_addr].address; struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]; + address = u132->addr[endp->usb_addr].address; endp->active = 1; ring->curr_endp = endp; ring->in_use = 1; -- cgit v1.2.3-58-ga151 From 1ab83238740ff1e1773d5c13ecac43c60cf4aec4 Mon Sep 17 00:00:00 2001 From: Robert Lukassen Date: Fri, 7 May 2010 09:19:53 +0200 Subject: USB: gadget: Allow function access to device ID data during bind() This is a patch that makes sure that the device ID data (idVendor, idProduct and bcdDevice) are assigned to the descriptor in the cdev structure *before* the composite gadget starts binding. This allows the composite driver, and all the composite functions it uses, access to that data. In one of the composite functions we created, we needed to register an input device and wanted to use the idVendor, idProduct and bcdDevice codes to properly initialize the id field of the input device. We could not do that because the idVendor, idProduct and bcdDevice values were only set in the cdec structure *after* the composite->bind(cdev) call. Signed-off-by: Robert Lukassen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index dd6d1905c148..391d169f8d07 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1017,6 +1017,14 @@ static int composite_bind(struct usb_gadget *gadget) */ usb_ep_autoconfig_reset(cdev->gadget); + /* standardized runtime overrides for device ID data */ + if (idVendor) + cdev->desc.idVendor = cpu_to_le16(idVendor); + if (idProduct) + cdev->desc.idProduct = cpu_to_le16(idProduct); + if (bcdDevice) + cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); + /* composite gadget needs to assign strings for whole device (like * serial number), register function drivers, potentially update * power state and consumption, etc @@ -1028,14 +1036,6 @@ static int composite_bind(struct usb_gadget *gadget) cdev->desc = *composite->dev; cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - /* standardized runtime overrides for device ID data */ - if (idVendor) - cdev->desc.idVendor = cpu_to_le16(idVendor); - if (idProduct) - cdev->desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); - /* strings can't be assigned before bind() allocates the * releavnt identifiers */ -- cgit v1.2.3-58-ga151 From 70ced221cc9f041481f129e63cc5b1dedb0ff959 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 7 May 2010 19:46:56 +0200 Subject: USB: tty: fix incorrect use of tty_insert_flip_string_fixed_flag Fix regression introduced by commit a108bfcb372d8c4452701039308fb95747911c59 (USB: tty: Prune uses of tty_request_room in the USB layer) which broke three drivers (cypress_m8, digi_acceleport and spcp8x5) through incorrect use of tty_insert_flip_string_fixed_flag. Signed-off-by: Johan Hovold Cc: stable [.34] Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cypress_m8.c | 2 +- drivers/usb/serial/digi_acceleport.c | 4 ++-- drivers/usb/serial/spcp8x5.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index e23c77925e7a..582e832dca72 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -1309,7 +1309,7 @@ static void cypress_read_int_callback(struct urb *urb) /* process read if there is data other than line status */ if (tty && bytes > i) { tty_insert_flip_string_fixed_flag(tty, data + i, - bytes - i, tty_flag); + tty_flag, bytes - i); tty_flip_buffer_push(tty); } diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 68b0aa5e516c..3edda3ed822a 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -1703,8 +1703,8 @@ static int digi_read_inb_callback(struct urb *urb) /* data length is len-1 (one byte of len is port_status) */ --len; if (len > 0) { - tty_insert_flip_string_fixed_flag(tty, data, len, - flag); + tty_insert_flip_string_fixed_flag(tty, data, flag, + len); tty_flip_buffer_push(tty); } } diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 5d39191e7244..2ea32c561d02 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -726,8 +726,8 @@ static void spcp8x5_read_bulk_callback(struct urb *urb) /* overrun is special, not associated with a char */ if (status & UART_OVERRUN_ERROR) tty_insert_flip_char(tty, 0, TTY_OVERRUN); - tty_insert_flip_string_fixed_flag(tty, data, - urb->actual_length, tty_flag); + tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + urb->actual_length); tty_flip_buffer_push(tty); } tty_kref_put(tty); -- cgit v1.2.3-58-ga151 From 82b71cfdf36d568c7a2e44efd705471c3c2caaa2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 7 May 2010 20:45:34 +0200 Subject: USB: ark3116: reimplement read processing Use process_read_urb to implement read processing. Compile-only tested. Signed-off-by: Johan Hovold Acked-by: Bart Hartgers Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ark3116.c | 104 +++++++++++++------------------------------ 1 file changed, 31 insertions(+), 73 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 0ae610efa23d..4e41a2a39422 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -42,7 +42,7 @@ static int debug; * Version information */ -#define DRIVER_VERSION "v0.5" +#define DRIVER_VERSION "v0.6" #define DRIVER_AUTHOR "Bart Hartgers " #define DRIVER_DESC "USB ARK3116 serial/IrDA driver" #define DRIVER_DEV_DESC "ARK3116 RS232/IrDA" @@ -672,87 +672,45 @@ static void ark3116_read_int_callback(struct urb *urb) * error for the next block of data as well... * For now, let's pretend this can't happen. */ - -static void send_to_tty(struct tty_struct *tty, - const unsigned char *chars, - size_t size, char flag) +static void ark3116_process_read_urb(struct urb *urb) { - if (size == 0) - return; - if (flag == TTY_NORMAL) { - tty_insert_flip_string(tty, chars, size); - } else { - int i; - for (i = 0; i < size; ++i) - tty_insert_flip_char(tty, chars[i], flag); - } -} - -static void ark3116_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; + struct usb_serial_port *port = urb->context; struct ark3116_private *priv = usb_get_serial_port_data(port); - const __u8 *data = urb->transfer_buffer; - int status = urb->status; struct tty_struct *tty; + unsigned char *data = urb->transfer_buffer; + char tty_flag = TTY_NORMAL; unsigned long flags; - int result; - char flag; __u32 lsr; - switch (status) { - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", - __func__, status); + /* update line status */ + spin_lock_irqsave(&priv->status_lock, flags); + lsr = priv->lsr; + priv->lsr &= ~UART_LSR_BRK_ERROR_BITS; + spin_unlock_irqrestore(&priv->status_lock, flags); + + if (!urb->actual_length) return; - default: - dbg("%s - nonzero urb status received: %d", - __func__, status); - break; - case 0: /* success */ - spin_lock_irqsave(&priv->status_lock, flags); - lsr = priv->lsr; - /* clear error bits */ - priv->lsr &= ~UART_LSR_BRK_ERROR_BITS; - spin_unlock_irqrestore(&priv->status_lock, flags); - - if (unlikely(lsr & UART_LSR_BI)) - flag = TTY_BREAK; - else if (unlikely(lsr & UART_LSR_PE)) - flag = TTY_PARITY; - else if (unlikely(lsr & UART_LSR_FE)) - flag = TTY_FRAME; - else - flag = TTY_NORMAL; - - tty = tty_port_tty_get(&port->port); - if (tty) { - /* overrun is special, not associated with a char */ - if (unlikely(lsr & UART_LSR_OE)) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - send_to_tty(tty, data, urb->actual_length, flag); - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } + tty = tty_port_tty_get(&port->port); + if (!tty) + return; + + if (lsr & UART_LSR_BRK_ERROR_BITS) { + if (lsr & UART_LSR_BI) + tty_flag = TTY_BREAK; + else if (lsr & UART_LSR_PE) + tty_flag = TTY_PARITY; + else if (lsr & UART_LSR_FE) + tty_flag = TTY_FRAME; - /* Throttle the device if requested by tty */ - spin_lock_irqsave(&port->lock, flags); - port->throttled = port->throttle_req; - if (port->throttled) { - spin_unlock_irqrestore(&port->lock, flags); - return; - } else - spin_unlock_irqrestore(&port->lock, flags); + /* overrun is special, not associated with a char */ + if (lsr & UART_LSR_OE) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); } - /* Continue reading from device */ - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&urb->dev->dev, "%s - failed resubmitting" - " read urb, error %d\n", __func__, result); + tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + urb->actual_length); + tty_flip_buffer_push(tty); + tty_kref_put(tty); } static struct usb_driver ark3116_driver = { @@ -782,7 +740,7 @@ static struct usb_serial_driver ark3116_device = { .close = ark3116_close, .break_ctl = ark3116_break_ctl, .read_int_callback = ark3116_read_int_callback, - .read_bulk_callback = ark3116_read_bulk_callback, + .process_read_urb = ark3116_process_read_urb, }; static int __init ark3116_init(void) -- cgit v1.2.3-58-ga151 From 9f0a6cd3ce34de5f9d34b5bf07e1b973a5cd2aa2 Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Fri, 7 May 2010 18:09:27 +0800 Subject: USB: usbcore: Do not disable USB3 protocol ports in hub_activate() When USB3 protocol port detects an USB3.0 device attach, the port will automatically transition to the Enabled state upon the completion of successful link training. Do not disable USB3 protocol ports in hub_activate(), or USB3.0 device will fail to be recognized if xHCI bus power management is implemented. Signed-off-by: Andiry Xu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 2a767b3143a4..83e7bbbe97fa 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -744,8 +744,20 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) !(portstatus & USB_PORT_STAT_CONNECTION) || !udev || udev->state == USB_STATE_NOTATTACHED)) { - clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE); - portstatus &= ~USB_PORT_STAT_ENABLE; + /* + * USB3 protocol ports will automatically transition + * to Enabled state when detect an USB3.0 device attach. + * Do not disable USB3 protocol ports. + * FIXME: USB3 root hub and external hubs are treated + * differently here. + */ + if (hdev->descriptor.bDeviceProtocol != 3 || + (!hdev->parent && + !(portstatus & USB_PORT_STAT_SUPER_SPEED))) { + clear_port_feature(hdev, port1, + USB_PORT_FEAT_ENABLE); + portstatus &= ~USB_PORT_STAT_ENABLE; + } } /* Clear status-change flags; we'll debounce later */ -- cgit v1.2.3-58-ga151 From 0954e1c258c4018bfd370da41fbb5deb34582976 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Fri, 7 May 2010 01:09:19 +0400 Subject: USB: isp1760: Soften DW3 X/transaction error bit handling There were some reports[1] of isp1760 USB driver malfunctioning with high speed devices, noticed on Blackfin and PowerPC targets. These reports indicated that the original Philips 'pehcd'[2] driver worked fine. We've noticed the same issue with an ARM RealView platform. This happens under load (with only some mass storage devices, not all, just as in another report[3]): error bit is set in DW3 error bit is set in DW3 error bit is set in DW3 usb 1-1.2: device descriptor read/64, error -32 It appears that the 'pehcd' driver checks the X bit only if the transaction is halted (H bit), otherwise the error is so far insignificant. The ISP176x chips were modeled after EHCI, and EHCI spec says (thanks to Alan Stern for pointing out): "Transaction errors cause the status field to be updated to reflect the type of error, but the transaction continues to be retried until the Active bit is set to 0. When the error counter reaches 0, the Halt bit is set and the Active bit is cleared." So, just as the original Philips driver, isp1760 must report the error only if the transaction error and the halt bits are set. [1] http://markmail.org/message/lx4qrlbrs2uhcnly [2] svn co svn://sources.blackfin.uclinux.org/linux-kernel/trunk/drivers/usb/host -r 5494 See pehci.c:pehci_hcd_update_error_status(). [3] http://blackfin.uclinux.org/gf/tracker/5148 Signed-off-by: Anton Vorontsov Acked-by: Sebastian Andrzej Siewior Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1760-hcd.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 13f7d1200bc0..dbcafa29c775 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -713,12 +713,11 @@ static int check_error(struct ptd *ptd) u32 dw3; dw3 = le32_to_cpu(ptd->dw3); - if (dw3 & DW3_HALT_BIT) + if (dw3 & DW3_HALT_BIT) { error = -EPIPE; - if (dw3 & DW3_ERROR_BIT) { - printk(KERN_ERR "error bit is set in DW3\n"); - error = -EPIPE; + if (dw3 & DW3_ERROR_BIT) + pr_err("error bit is set in DW3\n"); } if (dw3 & DW3_QTD_ACTIVE) { -- cgit v1.2.3-58-ga151 From 49b2597a86835a4eddcc02c7eafa2996aea58036 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 8 May 2010 15:19:06 +0200 Subject: USB: ftdi_sio: use tty_insert_flip_string_fixed_flag Use tty_insert_flip_string_fixed_flag to report errors to line discipline. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 14f7a34d614c..6f1c05b2bdb7 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1822,14 +1822,15 @@ static int ftdi_process_packet(struct tty_struct *tty, return 0; /* status only */ ch = packet + 2; - if (!(port->port.console && port->sysrq) && flag == TTY_NORMAL) - tty_insert_flip_string(tty, ch, len); - else { + if (port->port.console && port->sysrq) { for (i = 0; i < len; i++, ch++) { if (!usb_serial_handle_sysrq_char(tty, port, *ch)) tty_insert_flip_char(tty, *ch, flag); } + } else { + tty_insert_flip_string_fixed_flag(tty, ch, flag, len); } + return len; } -- cgit v1.2.3-58-ga151 From d45cc8df7f59eb4db28408076ce979cd5e18f2b7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 8 May 2010 15:18:41 +0200 Subject: USB: pl2303: use tty_insert_flip_string_fixed_flag Use tty_insert_flip_string_fixed_flag to report errors to line discipline. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 18d1c44faa51..6b6001822279 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -786,12 +786,13 @@ static void pl2303_process_read_urb(struct urb *urb) if (line_status & UART_OVERRUN_ERROR) tty_insert_flip_char(tty, 0, TTY_OVERRUN); - if (tty_flag == TTY_NORMAL && !(port->port.console && port->sysrq)) - tty_insert_flip_string(tty, data, urb->actual_length); - else { + if (port->port.console && port->sysrq) { for (i = 0; i < urb->actual_length; ++i) if (!usb_serial_handle_sysrq_char(tty, port, data[i])) tty_insert_flip_char(tty, data[i], tty_flag); + } else { + tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + urb->actual_length); } tty_flip_buffer_push(tty); -- cgit v1.2.3-58-ga151 From 166ceb69075066cba196434482370f1e0318bc3e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 8 May 2010 15:19:24 +0200 Subject: USB: ftdi_sio: clean up line-status handling Reverse priority of errors reported to ldisc so that it matches that of other serial drivers (break takes precedence over parity, which takes precedence over framing errors). Also make sure overrun errors are handled as in other drivers, that is, an overrun error is always reported and is not associated with any received character (instead a NULL character with the TTY_OVERRUN flag set is inserted). Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 37 ++++++++++++++++--------------------- 1 file changed, 16 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 6f1c05b2bdb7..00b938a81f33 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1767,6 +1767,8 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, return count; } +#define FTDI_RS_ERR_MASK (FTDI_RS_BI | FTDI_RS_PE | FTDI_RS_FE | FTDI_RS_OE) + static int ftdi_process_packet(struct tty_struct *tty, struct usb_serial_port *port, struct ftdi_private *priv, char *packet, int len) @@ -1793,28 +1795,21 @@ static int ftdi_process_packet(struct tty_struct *tty, priv->prev_status = status; } - /* - * Although the device uses a bitmask and hence can have multiple - * errors on a packet - the order here sets the priority the error is - * returned to the tty layer. - */ flag = TTY_NORMAL; - if (packet[1] & FTDI_RS_OE) { - flag = TTY_OVERRUN; - dbg("OVERRRUN error"); - } - if (packet[1] & FTDI_RS_BI) { - flag = TTY_BREAK; - dbg("BREAK received"); - usb_serial_handle_break(port); - } - if (packet[1] & FTDI_RS_PE) { - flag = TTY_PARITY; - dbg("PARITY error"); - } - if (packet[1] & FTDI_RS_FE) { - flag = TTY_FRAME; - dbg("FRAMING error"); + if (packet[1] & FTDI_RS_ERR_MASK) { + /* Break takes precedence over parity, which takes precedence + * over framing errors */ + if (packet[1] & FTDI_RS_BI) { + flag = TTY_BREAK; + usb_serial_handle_break(port); + } else if (packet[1] & FTDI_RS_PE) { + flag = TTY_PARITY; + } else if (packet[1] & FTDI_RS_FE) { + flag = TTY_FRAME; + } + /* Overrun is special, not associated with a char */ + if (packet[1] & FTDI_RS_OE) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); } len -= 2; -- cgit v1.2.3-58-ga151 From 73a0bd77d60163d8b4639834119a1ed65155c062 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 10 May 2010 11:21:57 -0500 Subject: USB: mxc: gadget: remove 60mhz clock requirement for freescale mx51 usb core renamed fsl_mx3_udc.c -> fsl_mxc_udc.c for mx51, usb core is clocked from sources that are not 60mhz. Signed-off-by: Dinh Nguyen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Makefile | 2 +- drivers/usb/gadget/fsl_mx3_udc.c | 104 -------------------------------------- drivers/usb/gadget/fsl_mxc_udc.c | 106 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 107 insertions(+), 105 deletions(-) delete mode 100644 drivers/usb/gadget/fsl_mx3_udc.c create mode 100644 drivers/usb/gadget/fsl_mxc_udc.c (limited to 'drivers') diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index a55050c17893..9bcde110feb1 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -20,7 +20,7 @@ obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o fsl_usb2_udc-objs := fsl_udc_core.o ifeq ($(CONFIG_ARCH_MXC),y) -fsl_usb2_udc-objs += fsl_mx3_udc.o +fsl_usb2_udc-objs += fsl_mxc_udc.o endif obj-$(CONFIG_USB_M66592) += m66592-udc.o obj-$(CONFIG_USB_R8A66597) += r8a66597-udc.o diff --git a/drivers/usb/gadget/fsl_mx3_udc.c b/drivers/usb/gadget/fsl_mx3_udc.c deleted file mode 100644 index 20a802ecaa15..000000000000 --- a/drivers/usb/gadget/fsl_mx3_udc.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (C) 2009 - * Guennadi Liakhovetski, DENX Software Engineering, - * - * Description: - * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c - * driver to function correctly on these systems. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include -#include -#include -#include -#include - -#include - -static struct clk *mxc_ahb_clk; -static struct clk *mxc_usb_clk; - -int fsl_udc_clk_init(struct platform_device *pdev) -{ - struct fsl_usb2_platform_data *pdata; - unsigned long freq; - int ret; - - pdata = pdev->dev.platform_data; - - if (!cpu_is_mx35()) { - mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); - if (IS_ERR(mxc_ahb_clk)) - return PTR_ERR(mxc_ahb_clk); - - ret = clk_enable(mxc_ahb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); - goto eenahb; - } - } - - /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ - mxc_usb_clk = clk_get(&pdev->dev, "usb"); - if (IS_ERR(mxc_usb_clk)) { - dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); - ret = PTR_ERR(mxc_usb_clk); - goto egusb; - } - - freq = clk_get_rate(mxc_usb_clk); - if (pdata->phy_mode != FSL_USB2_PHY_ULPI && - (freq < 59999000 || freq > 60001000)) { - dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq); - ret = -EINVAL; - goto eclkrate; - } - - ret = clk_enable(mxc_usb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); - goto eenusb; - } - - return 0; - -eenusb: -eclkrate: - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; -egusb: - if (!cpu_is_mx35()) - clk_disable(mxc_ahb_clk); -eenahb: - if (!cpu_is_mx35()) - clk_put(mxc_ahb_clk); - return ret; -} - -void fsl_udc_clk_finalize(struct platform_device *pdev) -{ - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - - /* ULPI transceivers don't need usbpll */ - if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; - } -} - -void fsl_udc_clk_release(void) -{ - if (mxc_usb_clk) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - } - if (!cpu_is_mx35()) { - clk_disable(mxc_ahb_clk); - clk_put(mxc_ahb_clk); - } -} diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c new file mode 100644 index 000000000000..d0b8bde59e59 --- /dev/null +++ b/drivers/usb/gadget/fsl_mxc_udc.c @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2009 + * Guennadi Liakhovetski, DENX Software Engineering, + * + * Description: + * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c + * driver to function correctly on these systems. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include +#include +#include +#include +#include + +#include + +static struct clk *mxc_ahb_clk; +static struct clk *mxc_usb_clk; + +int fsl_udc_clk_init(struct platform_device *pdev) +{ + struct fsl_usb2_platform_data *pdata; + unsigned long freq; + int ret; + + pdata = pdev->dev.platform_data; + + if (!cpu_is_mx35()) { + mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); + if (IS_ERR(mxc_ahb_clk)) + return PTR_ERR(mxc_ahb_clk); + + ret = clk_enable(mxc_ahb_clk); + if (ret < 0) { + dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); + goto eenahb; + } + } + + /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ + mxc_usb_clk = clk_get(&pdev->dev, "usb"); + if (IS_ERR(mxc_usb_clk)) { + dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); + ret = PTR_ERR(mxc_usb_clk); + goto egusb; + } + + if (!cpu_is_mx51()) { + freq = clk_get_rate(mxc_usb_clk); + if (pdata->phy_mode != FSL_USB2_PHY_ULPI && + (freq < 59999000 || freq > 60001000)) { + dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq); + ret = -EINVAL; + goto eclkrate; + } + } + + ret = clk_enable(mxc_usb_clk); + if (ret < 0) { + dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); + goto eenusb; + } + + return 0; + +eenusb: +eclkrate: + clk_put(mxc_usb_clk); + mxc_usb_clk = NULL; +egusb: + if (!cpu_is_mx35()) + clk_disable(mxc_ahb_clk); +eenahb: + if (!cpu_is_mx35()) + clk_put(mxc_ahb_clk); + return ret; +} + +void fsl_udc_clk_finalize(struct platform_device *pdev) +{ + struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + + /* ULPI transceivers don't need usbpll */ + if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { + clk_disable(mxc_usb_clk); + clk_put(mxc_usb_clk); + mxc_usb_clk = NULL; + } +} + +void fsl_udc_clk_release(void) +{ + if (mxc_usb_clk) { + clk_disable(mxc_usb_clk); + clk_put(mxc_usb_clk); + } + if (!cpu_is_mx35()) { + clk_disable(mxc_ahb_clk); + clk_put(mxc_ahb_clk); + } +} -- cgit v1.2.3-58-ga151 From 88ed0c97c9e9d48dddeca98856645f6ee5c56489 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Mon, 10 May 2010 21:56:11 +0530 Subject: USB: ohci: introduce omap3 ohci-hcd driver Add support for the OHCI controller present in OMAP3 and newer chips. The code is mostly based off the ehci-omap.c driver. Some of it is common to both drivers and will eventually need to be factored out to platform init files. In its current state, the driver cannot co-exist with the ehci-omap driver, and this will be fixed in later versions. The second driver to be loaded will overwrite settings made by the other. For now, this driver should allow the few users of OMAP3 OHCI to get going. Signed-off-by: Anand Gadiyar Cc: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-omap3.c | 735 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 735 insertions(+) create mode 100644 drivers/usb/host/ohci-omap3.c (limited to 'drivers') diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c new file mode 100644 index 000000000000..2cc8a504b18c --- /dev/null +++ b/drivers/usb/host/ohci-omap3.c @@ -0,0 +1,735 @@ +/* + * ohci-omap3.c - driver for OHCI on OMAP3 and later processors + * + * Bus Glue for OMAP3 USBHOST 3 port OHCI controller + * This controller is also used in later OMAPs and AM35x chips + * + * Copyright (C) 2007-2010 Texas Instruments, Inc. + * Author: Vikram Pandita + * Author: Anand Gadiyar + * + * Based on ehci-omap.c and some other ohci glue layers + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * TODO (last updated Mar 10th, 2010): + * - add kernel-doc + * - Factor out code common to EHCI to a separate file + * - Make EHCI and OHCI coexist together + * - needs newer silicon versions to actually work + * - the last one to be loaded currently steps on the other's toes + * - Add hooks for configuring transceivers, etc. at init/exit + * - Add aggressive clock-management code + */ + +#include +#include + +#include + +/* + * OMAP USBHOST Register addresses: VIRTUAL ADDRESSES + * Use ohci_omap_readl()/ohci_omap_writel() functions + */ + +/* TLL Register Set */ +#define OMAP_USBTLL_REVISION (0x00) +#define OMAP_USBTLL_SYSCONFIG (0x10) +#define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8) +#define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3) +#define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2) +#define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1) +#define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0) + +#define OMAP_USBTLL_SYSSTATUS (0x14) +#define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0) + +#define OMAP_USBTLL_IRQSTATUS (0x18) +#define OMAP_USBTLL_IRQENABLE (0x1C) + +#define OMAP_TLL_SHARED_CONF (0x30) +#define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6) +#define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5) +#define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2) +#define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1) +#define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0) + +#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num) +#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24 +#define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11) +#define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10) +#define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9) +#define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8) +#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1) +#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0) + +#define OMAP_TLL_CHANNEL_COUNT 3 + +/* UHH Register Set */ +#define OMAP_UHH_REVISION (0x00) +#define OMAP_UHH_SYSCONFIG (0x10) +#define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12) +#define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8) +#define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3) +#define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2) +#define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1) +#define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0) + +#define OMAP_UHH_SYSSTATUS (0x14) +#define OMAP_UHH_SYSSTATUS_UHHRESETDONE (1 << 0) +#define OMAP_UHH_SYSSTATUS_OHCIRESETDONE (1 << 1) +#define OMAP_UHH_SYSSTATUS_EHCIRESETDONE (1 << 2) +#define OMAP_UHH_HOSTCONFIG (0x40) +#define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0) +#define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0) +#define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11) +#define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12) +#define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2) +#define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3) +#define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4) +#define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5) +#define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8) +#define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9) +#define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10) + +#define OMAP_UHH_DEBUG_CSR (0x44) + +/*-------------------------------------------------------------------------*/ + +static inline void ohci_omap_writel(void __iomem *base, u32 reg, u32 val) +{ + __raw_writel(val, base + reg); +} + +static inline u32 ohci_omap_readl(void __iomem *base, u32 reg) +{ + return __raw_readl(base + reg); +} + +static inline void ohci_omap_writeb(void __iomem *base, u8 reg, u8 val) +{ + __raw_writeb(val, base + reg); +} + +static inline u8 ohci_omap_readb(void __iomem *base, u8 reg) +{ + return __raw_readb(base + reg); +} + +/*-------------------------------------------------------------------------*/ + +struct ohci_hcd_omap3 { + struct ohci_hcd *ohci; + struct device *dev; + + struct clk *usbhost_ick; + struct clk *usbhost2_120m_fck; + struct clk *usbhost1_48m_fck; + struct clk *usbtll_fck; + struct clk *usbtll_ick; + + /* port_mode: TLL/PHY, 2/3/4/6-PIN, DP-DM/DAT-SE0 */ + enum ohci_omap3_port_mode port_mode[OMAP3_HS_USB_PORTS]; + void __iomem *uhh_base; + void __iomem *tll_base; + void __iomem *ohci_base; + + unsigned es2_compatibility:1; +}; + +/*-------------------------------------------------------------------------*/ + +static void ohci_omap3_clock_power(struct ohci_hcd_omap3 *omap, int on) +{ + if (on) { + clk_enable(omap->usbtll_ick); + clk_enable(omap->usbtll_fck); + clk_enable(omap->usbhost_ick); + clk_enable(omap->usbhost1_48m_fck); + clk_enable(omap->usbhost2_120m_fck); + } else { + clk_disable(omap->usbhost2_120m_fck); + clk_disable(omap->usbhost1_48m_fck); + clk_disable(omap->usbhost_ick); + clk_disable(omap->usbtll_fck); + clk_disable(omap->usbtll_ick); + } +} + +static int ohci_omap3_init(struct usb_hcd *hcd) +{ + dev_dbg(hcd->self.controller, "starting OHCI controller\n"); + + return ohci_init(hcd_to_ohci(hcd)); +} + + +/*-------------------------------------------------------------------------*/ + +static int ohci_omap3_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + /* + * RemoteWakeupConnected has to be set explicitly before + * calling ohci_run. The reset value of RWC is 0. + */ + ohci->hc_control = OHCI_CTRL_RWC; + writel(OHCI_CTRL_RWC, &ohci->regs->control); + + ret = ohci_run(ohci); + + if (ret < 0) { + dev_err(hcd->self.controller, "can't start\n"); + ohci_stop(hcd); + } + + return ret; +} + +/*-------------------------------------------------------------------------*/ + +/* + * convert the port-mode enum to a value we can use in the FSLSMODE + * field of USBTLL_CHANNEL_CONF + */ +static unsigned ohci_omap3_fslsmode(enum ohci_omap3_port_mode mode) +{ + switch (mode) { + case OMAP_OHCI_PORT_MODE_UNUSED: + case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: + return 0x0; + + case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: + return 0x1; + + case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: + return 0x2; + + case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: + return 0x3; + + case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: + return 0x4; + + case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: + return 0x5; + + case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: + return 0x6; + + case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: + return 0x7; + + case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: + return 0xA; + + case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: + return 0xB; + default: + pr_warning("Invalid port mode, using default\n"); + return 0x0; + } +} + +static void ohci_omap3_tll_config(struct ohci_hcd_omap3 *omap) +{ + u32 reg; + int i; + + /* Program TLL SHARED CONF */ + reg = ohci_omap_readl(omap->tll_base, OMAP_TLL_SHARED_CONF); + reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN; + reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN; + reg |= OMAP_TLL_SHARED_CONF_USB_DIVRATION; + reg |= OMAP_TLL_SHARED_CONF_FCLK_IS_ON; + ohci_omap_writel(omap->tll_base, OMAP_TLL_SHARED_CONF, reg); + + /* Program each TLL channel */ + /* + * REVISIT: Only the 3-pin and 4-pin PHY modes have + * actually been tested. + */ + for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) { + + /* Enable only those channels that are actually used */ + if (omap->port_mode[i] == OMAP_OHCI_PORT_MODE_UNUSED) + continue; + + reg = ohci_omap_readl(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i)); + reg |= ohci_omap3_fslsmode(omap->port_mode[i]) + << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT; + reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS; + reg |= OMAP_TLL_CHANNEL_CONF_CHANEN; + ohci_omap_writel(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i), reg); + } +} + +/* omap3_start_ohci + * - Start the TI USBHOST controller + */ +static int omap3_start_ohci(struct ohci_hcd_omap3 *omap, struct usb_hcd *hcd) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(1000); + u32 reg = 0; + int ret = 0; + + dev_dbg(omap->dev, "starting TI OHCI USB Controller\n"); + + /* Get all the clock handles we need */ + omap->usbhost_ick = clk_get(omap->dev, "usbhost_ick"); + if (IS_ERR(omap->usbhost_ick)) { + dev_err(omap->dev, "could not get usbhost_ick\n"); + ret = PTR_ERR(omap->usbhost_ick); + goto err_host_ick; + } + + omap->usbhost2_120m_fck = clk_get(omap->dev, "usbhost_120m_fck"); + if (IS_ERR(omap->usbhost2_120m_fck)) { + dev_err(omap->dev, "could not get usbhost_120m_fck\n"); + ret = PTR_ERR(omap->usbhost2_120m_fck); + goto err_host_120m_fck; + } + + omap->usbhost1_48m_fck = clk_get(omap->dev, "usbhost_48m_fck"); + if (IS_ERR(omap->usbhost1_48m_fck)) { + dev_err(omap->dev, "could not get usbhost_48m_fck\n"); + ret = PTR_ERR(omap->usbhost1_48m_fck); + goto err_host_48m_fck; + } + + omap->usbtll_fck = clk_get(omap->dev, "usbtll_fck"); + if (IS_ERR(omap->usbtll_fck)) { + dev_err(omap->dev, "could not get usbtll_fck\n"); + ret = PTR_ERR(omap->usbtll_fck); + goto err_tll_fck; + } + + omap->usbtll_ick = clk_get(omap->dev, "usbtll_ick"); + if (IS_ERR(omap->usbtll_ick)) { + dev_err(omap->dev, "could not get usbtll_ick\n"); + ret = PTR_ERR(omap->usbtll_ick); + goto err_tll_ick; + } + + /* Now enable all the clocks in the correct order */ + ohci_omap3_clock_power(omap, 1); + + /* perform TLL soft reset, and wait until reset is complete */ + ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_SOFTRESET); + + /* Wait for TLL reset to complete */ + while (!(ohci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & OMAP_USBTLL_SYSSTATUS_RESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) { + dev_dbg(omap->dev, "operation timed out\n"); + ret = -EINVAL; + goto err_sys_status; + } + } + + dev_dbg(omap->dev, "TLL reset done\n"); + + /* (1<<3) = no idle mode only for initial debugging */ + ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | + OMAP_USBTLL_SYSCONFIG_SIDLEMODE | + OMAP_USBTLL_SYSCONFIG_CACTIVITY); + + + /* Put UHH in NoIdle/NoStandby mode */ + reg = ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSCONFIG); + reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP + | OMAP_UHH_SYSCONFIG_SIDLEMODE + | OMAP_UHH_SYSCONFIG_CACTIVITY + | OMAP_UHH_SYSCONFIG_MIDLEMODE); + reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE; + reg &= ~OMAP_UHH_SYSCONFIG_SOFTRESET; + + ohci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg); + + reg = ohci_omap_readl(omap->uhh_base, OMAP_UHH_HOSTCONFIG); + + /* setup ULPI bypass and burst configurations */ + reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN + | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN + | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN); + reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; + + /* + * REVISIT: Pi_CONNECT_STATUS controls MStandby + * assertion and Swakeup generation - let us not + * worry about this for now. OMAP HWMOD framework + * might take care of this later. If not, we can + * update these registers when adding aggressive + * clock management code. + * + * For now, turn off all the Pi_CONNECT_STATUS bits + * + if (omap->port_mode[0] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; + if (omap->port_mode[1] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; + if (omap->port_mode[2] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; + */ + reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; + reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; + reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; + + if (omap->es2_compatibility) { + /* + * All OHCI modes need to go through the TLL, + * unlike in the EHCI case. So use UTMI mode + * for all ports for OHCI, on ES2.x silicon + */ + dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1\n"); + reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + } else { + dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n"); + if (omap->port_mode[0] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + + if (omap->port_mode[1] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + + if (omap->port_mode[2] == OMAP_OHCI_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + + } + ohci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); + dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg); + + ohci_omap3_tll_config(omap); + + return 0; + +err_sys_status: + ohci_omap3_clock_power(omap, 0); + clk_put(omap->usbtll_ick); + +err_tll_ick: + clk_put(omap->usbtll_fck); + +err_tll_fck: + clk_put(omap->usbhost1_48m_fck); + +err_host_48m_fck: + clk_put(omap->usbhost2_120m_fck); + +err_host_120m_fck: + clk_put(omap->usbhost_ick); + +err_host_ick: + return ret; +} + +static void omap3_stop_ohci(struct ohci_hcd_omap3 *omap, struct usb_hcd *hcd) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(100); + + dev_dbg(omap->dev, "stopping TI EHCI USB Controller\n"); + + /* Reset USBHOST for insmod/rmmod to work */ + ohci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, + OMAP_UHH_SYSCONFIG_SOFTRESET); + while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & OMAP_UHH_SYSSTATUS_UHHRESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & OMAP_UHH_SYSSTATUS_OHCIRESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & OMAP_UHH_SYSSTATUS_EHCIRESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1)); + + while (!(ohci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & (1 << 0))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + ohci_omap3_clock_power(omap, 0); + + if (omap->usbtll_fck != NULL) { + clk_put(omap->usbtll_fck); + omap->usbtll_fck = NULL; + } + + if (omap->usbhost_ick != NULL) { + clk_put(omap->usbhost_ick); + omap->usbhost_ick = NULL; + } + + if (omap->usbhost1_48m_fck != NULL) { + clk_put(omap->usbhost1_48m_fck); + omap->usbhost1_48m_fck = NULL; + } + + if (omap->usbhost2_120m_fck != NULL) { + clk_put(omap->usbhost2_120m_fck); + omap->usbhost2_120m_fck = NULL; + } + + if (omap->usbtll_ick != NULL) { + clk_put(omap->usbtll_ick); + omap->usbtll_ick = NULL; + } + + dev_dbg(omap->dev, "Clock to USB host has been disabled\n"); +} + +/*-------------------------------------------------------------------------*/ + +static const struct hc_driver ohci_omap3_hc_driver = { + .description = hcd_name, + .product_desc = "OMAP3 OHCI Host Controller", + .hcd_priv_size = sizeof(struct ohci_hcd), + + /* + * generic hardware linkage + */ + .irq = ohci_irq, + .flags = HCD_USB11 | HCD_MEMORY, + + /* + * basic lifecycle operations + */ + .reset = ohci_omap3_init, + .start = ohci_omap3_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ohci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, +}; + +/*-------------------------------------------------------------------------*/ + +/* + * configure so an HC device and id are always provided + * always called with process context; sleeping is OK + */ + +/** + * ohci_hcd_omap3_probe - initialize OMAP-based HCDs + * + * Allocates basic resources for this USB host controller, and + * then invokes the start() method for the HCD associated with it + * through the hotplug entry's driver_data. + */ +static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev) +{ + struct ohci_hcd_omap_platform_data *pdata = pdev->dev.platform_data; + struct ohci_hcd_omap3 *omap; + struct resource *res; + struct usb_hcd *hcd; + int ret = -ENODEV; + int irq; + + if (usb_disabled()) + goto err_disabled; + + if (!pdata) { + dev_dbg(&pdev->dev, "missing platform_data\n"); + goto err_pdata; + } + + irq = platform_get_irq(pdev, 0); + + omap = kzalloc(sizeof(*omap), GFP_KERNEL); + if (!omap) { + ret = -ENOMEM; + goto err_disabled; + } + + hcd = usb_create_hcd(&ohci_omap3_hc_driver, &pdev->dev, + dev_name(&pdev->dev)); + if (!hcd) { + ret = -ENOMEM; + goto err_create_hcd; + } + + platform_set_drvdata(pdev, omap); + omap->dev = &pdev->dev; + omap->port_mode[0] = pdata->port_mode[0]; + omap->port_mode[1] = pdata->port_mode[1]; + omap->port_mode[2] = pdata->port_mode[2]; + omap->es2_compatibility = pdata->es2_compatibility; + omap->ohci = hcd_to_ohci(hcd); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + dev_err(&pdev->dev, "OHCI ioremap failed\n"); + ret = -ENOMEM; + goto err_ioremap; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + omap->uhh_base = ioremap(res->start, resource_size(res)); + if (!omap->uhh_base) { + dev_err(&pdev->dev, "UHH ioremap failed\n"); + ret = -ENOMEM; + goto err_uhh_ioremap; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + omap->tll_base = ioremap(res->start, resource_size(res)); + if (!omap->tll_base) { + dev_err(&pdev->dev, "TLL ioremap failed\n"); + ret = -ENOMEM; + goto err_tll_ioremap; + } + + ret = omap3_start_ohci(omap, hcd); + if (ret) { + dev_dbg(&pdev->dev, "failed to start ehci\n"); + goto err_start; + } + + ohci_hcd_init(omap->ohci); + + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); + if (ret) { + dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret); + goto err_add_hcd; + } + + return 0; + +err_add_hcd: + omap3_stop_ohci(omap, hcd); + +err_start: + iounmap(omap->tll_base); + +err_tll_ioremap: + iounmap(omap->uhh_base); + +err_uhh_ioremap: + iounmap(hcd->regs); + +err_ioremap: + usb_put_hcd(hcd); + +err_create_hcd: + kfree(omap); +err_pdata: +err_disabled: + return ret; +} + +/* + * may be called without controller electrically present + * may be called with controller, bus, and devices active + */ + +/** + * ohci_hcd_omap3_remove - shutdown processing for OHCI HCDs + * @pdev: USB Host Controller being removed + * + * Reverses the effect of ohci_hcd_omap3_probe(), first invoking + * the HCD's stop() method. It is always called from a thread + * context, normally "rmmod", "apmd", or something similar. + */ +static int __devexit ohci_hcd_omap3_remove(struct platform_device *pdev) +{ + struct ohci_hcd_omap3 *omap = platform_get_drvdata(pdev); + struct usb_hcd *hcd = ohci_to_hcd(omap->ohci); + + usb_remove_hcd(hcd); + omap3_stop_ohci(omap, hcd); + iounmap(hcd->regs); + iounmap(omap->tll_base); + iounmap(omap->uhh_base); + usb_put_hcd(hcd); + kfree(omap); + + return 0; +} + +static void ohci_hcd_omap3_shutdown(struct platform_device *pdev) +{ + struct ohci_hcd_omap3 *omap = platform_get_drvdata(pdev); + struct usb_hcd *hcd = ohci_to_hcd(omap->ohci); + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} + +static struct platform_driver ohci_hcd_omap3_driver = { + .probe = ohci_hcd_omap3_probe, + .remove = __devexit_p(ohci_hcd_omap3_remove), + .shutdown = ohci_hcd_omap3_shutdown, + .driver = { + .name = "ohci-omap3", + }, +}; + +MODULE_ALIAS("platform:ohci-omap3"); +MODULE_AUTHOR("Anand Gadiyar "); -- cgit v1.2.3-58-ga151 From 968b448b22f5a42689cc55648510834010d42379 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Mon, 10 May 2010 21:56:12 +0530 Subject: USB: ohci: Add Kconfig entries for ohci-omap3 On OMAP systems, we have two different OHCI controllers. The legacy one is present in OMAP1/2 chips, and the newer one comes bundled as a companion to the EHCI controller on OMAP3 and newer chips. We may have multi-omap configurations where OMAP2 and OMAP3 support may be enabled in the same kernel, and need a mechanism to keep both drivers around. This patch adds a Kconfig entry for each of these drivers. Signed-off-by: Anand Gadiyar Cc: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 15 +++++++++++++++ drivers/usb/host/ohci-hcd.c | 31 +++++++++++++++++++++++++++++-- 2 files changed, 44 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 8d3df0397de3..f865be2276d4 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -207,6 +207,21 @@ config USB_OHCI_HCD To compile this driver as a module, choose M here: the module will be called ohci-hcd. +config USB_OHCI_HCD_OMAP1 + bool "OHCI support for OMAP1/2 chips" + depends on USB_OHCI_HCD && (ARCH_OMAP1 || ARCH_OMAP2) + default y + ---help--- + Enables support for the OHCI controller on OMAP1/2 chips. + +config USB_OHCI_HCD_OMAP3 + bool "OHCI support for OMAP3 and later chips" + depends on USB_OHCI_HCD && (ARCH_OMAP3 || ARCH_OMAP4) + default y + ---help--- + Enables support for the on-chip OHCI controller on + OMAP3 and later chips. + config USB_OHCI_HCD_PPC_SOC bool "OHCI support for on-chip PPC USB controller" depends on USB_OHCI_HCD && (STB03xxx || PPC_MPC52xx) diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index d15d2478493e..fc576557d8a5 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1006,9 +1006,14 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ohci_hcd_s3c2410_driver #endif -#ifdef CONFIG_ARCH_OMAP +#ifdef CONFIG_USB_OHCI_HCD_OMAP1 #include "ohci-omap.c" -#define PLATFORM_DRIVER ohci_hcd_omap_driver +#define OMAP1_PLATFORM_DRIVER ohci_hcd_omap_driver +#endif + +#ifdef CONFIG_USB_OHCI_HCD_OMAP3 +#include "ohci-omap3.c" +#define OMAP3_PLATFORM_DRIVER ohci_hcd_omap3_driver #endif #ifdef CONFIG_ARCH_LH7A404 @@ -1092,6 +1097,8 @@ MODULE_LICENSE ("GPL"); #if !defined(PCI_DRIVER) && \ !defined(PLATFORM_DRIVER) && \ + !defined(OMAP1_PLATFORM_DRIVER) && \ + !defined(OMAP3_PLATFORM_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ !defined(SA1111_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ @@ -1133,6 +1140,18 @@ static int __init ohci_hcd_mod_init(void) goto error_platform; #endif +#ifdef OMAP1_PLATFORM_DRIVER + retval = platform_driver_register(&OMAP1_PLATFORM_DRIVER); + if (retval < 0) + goto error_omap1_platform; +#endif + +#ifdef OMAP3_PLATFORM_DRIVER + retval = platform_driver_register(&OMAP3_PLATFORM_DRIVER); + if (retval < 0) + goto error_omap3_platform; +#endif + #ifdef OF_PLATFORM_DRIVER retval = of_register_platform_driver(&OF_PLATFORM_DRIVER); if (retval < 0) @@ -1200,6 +1219,14 @@ static int __init ohci_hcd_mod_init(void) platform_driver_unregister(&PLATFORM_DRIVER); error_platform: #endif +#ifdef OMAP1_PLATFORM_DRIVER + platform_driver_unregister(&OMAP1_PLATFORM_DRIVER); + error_omap1_platform: +#endif +#ifdef OMAP3_PLATFORM_DRIVER + platform_driver_unregister(&OMAP3_PLATFORM_DRIVER); + error_omap3_platform: +#endif #ifdef PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER); error_ps3: -- cgit v1.2.3-58-ga151 From b0608690c2deafbca32b45196672bfd74006cf61 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 10 May 2010 10:51:36 -0700 Subject: USB: gadget: f_fs.c needs to include pagemap.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix g_ffs build error, add a needed header file: drivers/usb/gadget/f_fs.c:1064:error: 'PAGE_CACHE_SIZE' undeclared (first use in this function) drivers/usb/gadget/f_fs.c:1065:error: 'PAGE_CACHE_SHIFT' undeclared (first use in this function) Signed-off-by: Randy Dunlap Acked-by: Michał Nazarewicz Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_fs.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index af89ca672c60..d69eccf5f197 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -28,6 +28,7 @@ /* #define VERBOSE_DEBUG */ #include +#include #include #include -- cgit v1.2.3-58-ga151 From 6c12db90f19727c76990e7f4801c67a148b30111 Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 10 May 2010 15:33:00 -0700 Subject: USB: xhci: Transfer ring link TRB activation change. Change transfer ring behavior to not follow/activate link TRBs until active TRBs are queued after it. This change affects the behavior when a TD ends just before a link TRB. Signed-off-by: John Youn Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 71 ++++++++++++++++++++++++++++++++++++-------- 1 file changed, 58 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 15f02e88f329..803f6810e996 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -112,6 +112,12 @@ static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, return (trb->link.control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK); } +static inline int enqueue_is_link_trb(struct xhci_ring *ring) +{ + struct xhci_link_trb *link = &ring->enqueue->link; + return ((link->control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK)); +} + /* Updates trb to point to the next TRB in the ring, and updates seg if the next * TRB is in a new segment. This does not skip over link TRBs, and it does not * effect the ring dequeue or enqueue pointers. @@ -193,20 +199,15 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer while (last_trb(xhci, ring, ring->enq_seg, next)) { if (!consumer) { if (ring != xhci->event_ring) { - /* If we're not dealing with 0.95 hardware, - * carry over the chain bit of the previous TRB - * (which may mean the chain bit is cleared). - */ - if (!xhci_link_trb_quirk(xhci)) { - next->link.control &= ~TRB_CHAIN; - next->link.control |= chain; + if (chain) { + next->link.control |= TRB_CHAIN; + + /* Give this link TRB to the hardware */ + wmb(); + next->link.control ^= TRB_CYCLE; + } else { + break; } - /* Give this link TRB to the hardware */ - wmb(); - if (next->link.control & TRB_CYCLE) - next->link.control &= (u32) ~TRB_CYCLE; - else - next->link.control |= (u32) TRB_CYCLE; } /* Toggle the cycle bit after the last ring segment. */ if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) { @@ -245,6 +246,13 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, struct xhci_segment *cur_seg; unsigned int left_on_ring; + /* If we are currently pointing to a link TRB, advance the + * enqueue pointer before checking for space */ + while (last_trb(xhci, ring, enq_seg, enq)) { + enq_seg = enq_seg->next; + enq = enq_seg->trbs; + } + /* Check if ring is empty */ if (enq == ring->dequeue) { /* Can't use link trbs */ @@ -1728,6 +1736,43 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, xhci_err(xhci, "ERROR no room on ep ring\n"); return -ENOMEM; } + + if (enqueue_is_link_trb(ep_ring)) { + struct xhci_ring *ring = ep_ring; + union xhci_trb *next; + unsigned long long addr; + + xhci_dbg(xhci, "prepare_ring: pointing to link trb\n"); + next = ring->enqueue; + + while (last_trb(xhci, ring, ring->enq_seg, next)) { + + /* If we're not dealing with 0.95 hardware, + * clear the chain bit. + */ + if (!xhci_link_trb_quirk(xhci)) + next->link.control &= ~TRB_CHAIN; + else + next->link.control |= TRB_CHAIN; + + wmb(); + next->link.control ^= (u32) TRB_CYCLE; + + /* Toggle the cycle bit after the last ring segment. */ + if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) { + ring->cycle_state = (ring->cycle_state ? 0 : 1); + if (!in_interrupt()) { + xhci_dbg(xhci, "queue_trb: Toggle cycle " + "state for ring %p = %i\n", + ring, (unsigned int)ring->cycle_state); + } + } + ring->enq_seg = ring->enq_seg->next; + ring->enqueue = ring->enq_seg->trbs; + next = ring->enqueue; + } + } + return 0; } -- cgit v1.2.3-58-ga151 From 54b5acf3acb7a1f83ec281d111d3e2812cd7ad9d Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Mon, 10 May 2010 19:57:17 -0700 Subject: USB: xHCI: Fix wrong usage of macro TRB_TYPE Macro TRB_TYPE is misused in some places. Fix the wrong usage. Signed-off-by: Andiry Xu Cc: stable Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 803f6810e996..eabd95544823 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -390,7 +390,8 @@ static struct xhci_segment *find_trb_seg( while (cur_seg->trbs > trb || &cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) { generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic; - if (TRB_TYPE(generic_trb->field[3]) == TRB_LINK && + if ((generic_trb->field[3] & TRB_TYPE_BITMASK) == + TRB_TYPE(TRB_LINK) && (generic_trb->field[3] & LINK_TOGGLE)) *cycle_state = ~(*cycle_state) & 0x1; cur_seg = cur_seg->next; @@ -455,7 +456,7 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, BUG(); trb = &state->new_deq_ptr->generic; - if (TRB_TYPE(trb->field[3]) == TRB_LINK && + if ((trb->field[3] & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK) && (trb->field[3] & LINK_TOGGLE)) state->new_cycle_state = ~(state->new_cycle_state) & 0x1; next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr); @@ -1504,8 +1505,10 @@ static int handle_tx_event(struct xhci_hcd *xhci, for (cur_trb = ep_ring->dequeue, cur_seg = ep_ring->deq_seg; cur_trb != event_trb; next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) { - if (TRB_TYPE(cur_trb->generic.field[3]) != TRB_TR_NOOP && - TRB_TYPE(cur_trb->generic.field[3]) != TRB_LINK) + if ((cur_trb->generic.field[3] & + TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) && + (cur_trb->generic.field[3] & + TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK)) td->urb->actual_length += TRB_LEN(cur_trb->generic.field[2]); } -- cgit v1.2.3-58-ga151 From 89842ae6515c49405e20c0629a6442b6885ad49d Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 11 May 2010 11:44:06 -0400 Subject: USB: fix interface runtime-PM settings This patch (as1379) reworks the logic for handling USB interface runtime-PM settings -- hopefully it's right this time! The problem is that when a driver is unbound or binding fails, runtime PM for the interface always gets disabled. But pm_runtime_disable() nests, so it shouldn't be called unless the interface was previously enabled for runtime PM. Signed-off-by: Alan Stern Reported-by: Rob Duncan Tested-by: Rob Duncan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 207146743ea7..ded550eda5d9 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -334,7 +334,8 @@ static int usb_probe_interface(struct device *dev) usb_cancel_queued_reset(intf); /* Unbound interfaces are always runtime-PM-disabled and -suspended */ - pm_runtime_disable(dev); + if (driver->supports_autosuspend) + pm_runtime_disable(dev); pm_runtime_set_suspended(dev); usb_autosuspend_device(udev); @@ -389,7 +390,8 @@ static int usb_unbind_interface(struct device *dev) intf->needs_remote_wakeup = 0; /* Unbound interfaces are always runtime-PM-disabled and -suspended */ - pm_runtime_disable(dev); + if (driver->supports_autosuspend) + pm_runtime_disable(dev); pm_runtime_set_suspended(dev); /* Undo any residual pm_autopm_get_interface_* calls */ @@ -438,14 +440,17 @@ int usb_driver_claim_interface(struct usb_driver *driver, iface->condition = USB_INTERFACE_BOUND; - /* Claimed interfaces are initially inactive (suspended). They are - * runtime-PM-enabled only if the driver has autosuspend support. - * They are sensitive to their children's power states. + /* Claimed interfaces are initially inactive (suspended) and + * runtime-PM-enabled, but only if the driver has autosuspend + * support. Otherwise they are marked active, to prevent the + * device from being autosuspended, but left disabled. In either + * case they are sensitive to their children's power states. */ - pm_runtime_set_suspended(dev); pm_suspend_ignore_children(dev, false); if (driver->supports_autosuspend) pm_runtime_enable(dev); + else + pm_runtime_set_active(dev); /* if interface was already added, bind now; else let * the future device_add() bind it, bypassing probe() -- cgit v1.2.3-58-ga151 From 572538dee7a4b25f3e77fdc11d20dbb753ecf367 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Thu, 6 May 2010 20:09:48 +0530 Subject: USB: ehci-omap: Fix resume failures after bus suspend An undocumented "feature" in the OMAP3 EHCI controller causes suspended ports to be taken out of suspend when the USBCMD.Run/Stop bit is cleared (this bit is normally cleared when ehci_bus_suspend is called). This "feature" breaks suspend-resume if the root-hub is allowed to suspend. (The controller thinks it is in resume, and the PHY thinks it is still in suspend). There is an undocumented register bit that can be used to disable this feature and restore normal behavior. Set this bit so suspend-resume can work normally. Tested on OMAP3 SDPs with the NXP ISP1504 and NXP ISP1703 PHYs. Signed-off-by: Anand Gadiyar Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 992d963b91fc..8905ba4e482a 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -116,6 +116,8 @@ #define OMAP_UHH_DEBUG_CSR (0x44) /* EHCI Register Set */ +#define EHCI_INSNREG04 (0xA0) +#define EHCI_INSNREG04_DISABLE_UNSUSPEND (1 << 5) #define EHCI_INSNREG05_ULPI (0xA4) #define EHCI_INSNREG05_ULPI_CONTROL_SHIFT 31 #define EHCI_INSNREG05_ULPI_PORTSEL_SHIFT 24 @@ -382,6 +384,18 @@ static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd) dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg); + /* + * An undocumented "feature" in the OMAP3 EHCI controller, + * causes suspended ports to be taken out of suspend when + * the USBCMD.Run/Stop bit is cleared (for example when + * we do ehci_bus_suspend). + * This breaks suspend-resume if the root-hub is allowed + * to suspend. Writing 1 to this undocumented register bit + * disables this feature and restores normal behavior. + */ + ehci_omap_writel(omap->ehci_base, EHCI_INSNREG04, + EHCI_INSNREG04_DISABLE_UNSUSPEND); + if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) || (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) || (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)) { -- cgit v1.2.3-58-ga151 From f537da685c35a81a75f6067751bddb902c8adb68 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 12 May 2010 23:38:12 +0800 Subject: USB: add missing "{}" in map_urb_for_dma Obviously, {} is needed in the branch of "else if (hcd->driver->flags & HCD_LOCAL_MEM)" for handling of setup packet mapping. Signed-off-by: Ming Lei Acked-by: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 297c92e4bf8d..12742f152f43 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1327,7 +1327,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, urb->setup_dma)) return -EAGAIN; urb->transfer_flags |= URB_SETUP_MAP_SINGLE; - } else if (hcd->driver->flags & HCD_LOCAL_MEM) + } else if (hcd->driver->flags & HCD_LOCAL_MEM) { ret = hcd_alloc_coherent( urb->dev->bus, mem_flags, &urb->setup_dma, @@ -1337,6 +1337,7 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, if (ret) return ret; urb->transfer_flags |= URB_SETUP_MAP_LOCAL; + } } dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; -- cgit v1.2.3-58-ga151 From b9e000884e50bf6b25a92a3f3580e1d14fe01591 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 12 May 2010 12:51:13 +0200 Subject: USB: gadget: f_mass_storage: fix in error recovery In to places in fsg_common_init() an unconditional call to kfree() on common was performed in error recovery which is not a valid behaviour since fsg_common structure is not always allocated by fsg_common_init(). To fix, the calls has been replaced with a goto to a proper error recovery which does the correct thing. Also, refactored fsg_common_release() function. Signed-off-by: Michal Nazarewicz Reviewed-by: Viral Mehta Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_mass_storage.c | 51 ++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 6cfd2f428d38..7d05a0be5c60 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2742,10 +2742,8 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, /* Maybe allocate device-global string IDs, and patch descriptors */ if (fsg_strings[FSG_STRING_INTERFACE].id == 0) { rc = usb_string_id(cdev); - if (rc < 0) { - kfree(common); - return ERR_PTR(rc); - } + if (unlikely(rc < 0)) + goto error_release; fsg_strings[FSG_STRING_INTERFACE].id = rc; fsg_intf_desc.iInterface = rc; } @@ -2753,9 +2751,9 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, /* Create the LUNs, open their backing files, and register the * LUN devices in sysfs. */ curlun = kzalloc(nluns * sizeof *curlun, GFP_KERNEL); - if (!curlun) { - kfree(common); - return ERR_PTR(-ENOMEM); + if (unlikely(!curlun)) { + rc = -ENOMEM; + goto error_release; } common->luns = curlun; @@ -2914,11 +2912,7 @@ error_release: static void fsg_common_release(struct kref *ref) { - struct fsg_common *common = - container_of(ref, struct fsg_common, ref); - unsigned i = common->nluns; - struct fsg_lun *lun = common->luns; - struct fsg_buffhd *bh; + struct fsg_common *common = container_of(ref, struct fsg_common, ref); /* If the thread isn't already dead, tell it to exit now */ if (common->state != FSG_STATE_TERMINATED) { @@ -2929,23 +2923,28 @@ static void fsg_common_release(struct kref *ref) complete(&common->thread_notifier); } - /* Beware tempting for -> do-while optimization: when in error - * recovery nluns may be zero. */ + if (likely(common->luns)) { + struct fsg_lun *lun = common->luns; + unsigned i = common->nluns; - for (; i; --i, ++lun) { - device_remove_file(&lun->dev, &dev_attr_ro); - device_remove_file(&lun->dev, &dev_attr_file); - fsg_lun_close(lun); - device_unregister(&lun->dev); - } + /* In error recovery common->nluns may be zero. */ + for (; i; --i, ++lun) { + device_remove_file(&lun->dev, &dev_attr_ro); + device_remove_file(&lun->dev, &dev_attr_file); + fsg_lun_close(lun); + device_unregister(&lun->dev); + } - kfree(common->luns); + kfree(common->luns); + } - i = FSG_NUM_BUFFERS; - bh = common->buffhds; - do { - kfree(bh->buf); - } while (++bh, --i); + { + struct fsg_buffhd *bh = common->buffhds; + unsigned i = FSG_NUM_BUFFERS; + do { + kfree(bh->buf); + } while (++bh, --i); + } if (common->free_storage_on_release) kfree(common); -- cgit v1.2.3-58-ga151 From 22b4b6113ec5d0ff2a9175bc611f3f3f61e4e172 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 12 May 2010 23:38:46 +0800 Subject: USB: remove usb_find_device Now on one uses this function and it seems useless, so remove usb_find_device. [tom@tom linux-2.6-next]$ grep -r -n -I usb_find_device ./ drivers/media/dvb/dvb-usb/dvb-usb-init.c:160:static struct dvb_usb_device_description * dvb_usb_find_device(struct usb_device *udev,struct dvb_usb_device_properties *props, int *cold) drivers/media/dvb/dvb-usb/dvb-usb-init.c:230: if ((desc = dvb_usb_find_device(udev,props,&cold)) == NULL) { drivers/usb/core/usb.c:630: * usb_find_device - find a specific usb device in the system drivers/usb/core/usb.c:642:struct usb_device *usb_find_device(u16 vendor_id, u16 product_id) Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/usb.c | 37 ------------------------------------- include/linux/usb.h | 1 - 2 files changed, 38 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 8180ce533ebf..902f821d8d14 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -626,43 +626,6 @@ exit: return ret_dev; } -/** - * usb_find_device - find a specific usb device in the system - * @vendor_id: the vendor id of the device to find - * @product_id: the product id of the device to find - * - * Returns a pointer to a struct usb_device if such a specified usb - * device is present in the system currently. The usage count of the - * device will be incremented if a device is found. Make sure to call - * usb_put_dev() when the caller is finished with the device. - * - * If a device with the specified vendor and product id is not found, - * NULL is returned. - */ -struct usb_device *usb_find_device(u16 vendor_id, u16 product_id) -{ - struct list_head *buslist; - struct usb_bus *bus; - struct usb_device *dev = NULL; - - mutex_lock(&usb_bus_list_lock); - for (buslist = usb_bus_list.next; - buslist != &usb_bus_list; - buslist = buslist->next) { - bus = container_of(buslist, struct usb_bus, bus_list); - if (!bus->root_hub) - continue; - usb_lock_device(bus->root_hub); - dev = match_device(bus->root_hub, vendor_id, product_id); - usb_unlock_device(bus->root_hub); - if (dev) - goto exit; - } -exit: - mutex_unlock(&usb_bus_list_lock); - return dev; -} - /** * usb_get_current_frame_number - return current bus frame number * @dev: the device whose bus is being queried diff --git a/include/linux/usb.h b/include/linux/usb.h index ce07062ebc28..3185eb46d85a 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -510,7 +510,6 @@ extern int usb_lock_device_for_reset(struct usb_device *udev, extern int usb_reset_device(struct usb_device *dev); extern void usb_queue_reset_device(struct usb_interface *dev); -extern struct usb_device *usb_find_device(u16 vendor_id, u16 product_id); /* USB autosuspend and autoresume */ #ifdef CONFIG_USB_SUSPEND -- cgit v1.2.3-58-ga151 From 419a8e81686b844c9682e8f1721e6795f3264ee6 Mon Sep 17 00:00:00 2001 From: William Gulland Date: Wed, 12 May 2010 10:20:34 -0700 Subject: USB: xhci: Remove the arbitrary limit of 15 xHCI ports Our virtual xHCI device can have as many ports as we like - I've tested this patch with 31. Signed-off-by: William Gulland Cc: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 325b47a267b9..a1a7a9795536 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -298,7 +298,6 @@ error: * Returns 0 if the status hasn't changed, or the number of bytes in buf. * Ports are 0-indexed from the HCD point of view, * and 1-indexed from the USB core pointer of view. - * xHCI instances can have up to 127 ports, so FIXME if you see more than 15. * * Note that the status change bits will be cleared as soon as a port status * change event is generated, so we use the saved status from that event. @@ -315,14 +314,9 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) ports = HCS_MAX_PORTS(xhci->hcs_params1); /* Initial status is no changes */ - buf[0] = 0; + retval = (ports + 8) / 8; + memset(buf, 0, retval); status = 0; - if (ports > 7) { - buf[1] = 0; - retval = 2; - } else { - retval = 1; - } spin_lock_irqsave(&xhci->lock, flags); /* For each port, did anything change? If so, set that bit in buf. */ @@ -331,10 +325,7 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) NUM_PORT_REGS*i; temp = xhci_readl(xhci, addr); if (temp & (PORT_CSC | PORT_PEC | PORT_OCC)) { - if (i < 7) - buf[0] |= 1 << (i + 1); - else - buf[1] |= 1 << (i - 7); + buf[(i + 1) / 8] |= 1 << (i + 1) % 8; status = 1; } } -- cgit v1.2.3-58-ga151 From 17b2765ef8db8dc00a24a9afd4646bb3decffbd2 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 13 May 2010 09:41:12 -0700 Subject: USB: fix functionfs for CONFIG_NET disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix functionfs build to handle CONFIG_NET not enabled, to prevent these build errors: ERROR: "netif_carrier_on" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "netif_carrier_off" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_realloc_headroom" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_trim" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "netif_rx" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "alloc_etherdev_mq" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "ethtool_op_get_link" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "free_netdev" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "register_netdev" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_push" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_pull" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "dev_kfree_skb_any" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_queue_tail" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "__alloc_skb" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "eth_type_trans" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "eth_validate_addr" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_dequeue" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "unregister_netdev" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "__netif_schedule" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "skb_put" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "eth_mac_addr" [drivers/usb/gadget/g_ffs.ko] undefined! ERROR: "dev_get_stats" [drivers/usb/gadget/g_ffs.ko] undefined! Signed-off-by: Randy Dunlap Acked-by: Michał Nazarewicz Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 0282c50d6404..649c0c5f7158 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -726,7 +726,7 @@ config USB_FUNCTIONFS config USB_FUNCTIONFS_ETH bool "Include CDC ECM (Ethernet) function" - depends on USB_FUNCTIONFS + depends on USB_FUNCTIONFS && NET help Include an CDC ECM (Ethernet) funcion in the CDC ECM (Funcion) Filesystem. If you also say "y" to the RNDIS query below the @@ -734,7 +734,7 @@ config USB_FUNCTIONFS_ETH config USB_FUNCTIONFS_RNDIS bool "Include RNDIS (Ethernet) function" - depends on USB_FUNCTIONFS + depends on USB_FUNCTIONFS && NET help Include an RNDIS (Ethernet) funcion in the Funcion Filesystem. If you also say "y" to the CDC ECM query above the gadget will -- cgit v1.2.3-58-ga151 From eab80de01cb398419ef3305f35abcb367c647c8b Mon Sep 17 00:00:00 2001 From: Alek Du Date: Mon, 10 May 2010 11:17:49 +0800 Subject: USB: EHCI: clear PHCD before resuming This is a bug fix for PHCD (phy clock disable) low power feature: After PHCD is set, any write to PORTSC register is illegal, so when resume ports, clear PHCD bit first. Signed-off-by: Alek Du Cc: David Brownell Cc: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hub.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index c44018109a13..ef956220f854 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -294,6 +294,16 @@ static int ehci_bus_resume (struct usb_hcd *hcd) /* manually resume the ports we suspended during bus_suspend() */ i = HCS_N_PORTS (ehci->hcs_params); while (i--) { + /* clear phy low power mode before resume */ + if (ehci->has_hostpc) { + u32 __iomem *hostpc_reg = + (u32 __iomem *)((u8 *)ehci->regs + + HOSTPC0 + 4 * (i & 0xff)); + temp = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp & ~HOSTPC_PHCD, + hostpc_reg); + mdelay(5); + } temp = ehci_readl(ehci, &ehci->regs->port_status [i]); temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); if (test_bit(i, &ehci->bus_suspended) && @@ -678,6 +688,13 @@ static int ehci_hub_control ( if (temp & PORT_SUSPEND) { if ((temp & PORT_PE) == 0) goto error; + /* clear phy low power mode before resume */ + if (hostpc_reg) { + temp1 = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, + hostpc_reg); + mdelay(5); + } /* resume signaling for 20 msec */ temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); ehci_writel(ehci, temp | PORT_RESUME, -- cgit v1.2.3-58-ga151 From 16032c4f5b291af541e9114a09ea20ff5a0dc474 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 12 May 2010 18:21:35 -0400 Subject: USB: EHCI: fix controller wakeup flag settings during suspend This patch (as1380) fixes a bug in the wakeup settings for EHCI host controllers. When the controller is suspended, if it isn't enabled for remote wakeup then we have to turn off all the port wakeup flags. Disabling PCI PME# isn't good enough, because some systems (Intel) evidently use alternate wakeup signalling paths. In addition, the patch improves the handling of the Intel Moorestown hardware by performing various power-up and power-down delays just once instead of once for each port (i.e., the delays are moved outside of the port loops). This requires extra code, but the total delay time is reduced. There are also a few additional minor cleanups. Signed-off-by: Alan Stern Reported-by: Ondrej Zary CC: Alek Du CC: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-au1xxx.c | 16 +--- drivers/usb/host/ehci-fsl.c | 2 + drivers/usb/host/ehci-hub.c | 173 +++++++++++++++++++++++++++++------------ drivers/usb/host/ehci-pci.c | 15 +--- drivers/usb/host/ehci.h | 10 +++ 5 files changed, 145 insertions(+), 71 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index 7a27b7c4ee84..faa61748db70 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -224,26 +224,17 @@ static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) msleep(10); /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible, bail out if RH has been resumed. Use - * the spinlock to properly synchronize with possible pending - * RH suspend or resume activity. - * - * This is still racy as hcd->state is manipulated outside of - * any locks =P But that will be a different fix. + * mark HW unaccessible. The PM and USB cores make sure that + * the root hub is either suspended or stopped. */ spin_lock_irqsave(&ehci->lock, flags); - if (hcd->state != HC_STATE_SUSPENDED) { - rc = -EINVAL; - goto bail; - } + ehci_prepare_ports_for_controller_suspend(ehci); ehci_writel(ehci, 0, &ehci->regs->intr_enable); (void)ehci_readl(ehci, &ehci->regs->intr_enable); clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); au1xxx_stop_ehc(); - -bail: spin_unlock_irqrestore(&ehci->lock, flags); // could save FLADJ in case of Vaux power loss @@ -273,6 +264,7 @@ static int ehci_hcd_au1xxx_drv_resume(struct device *dev) if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { int mask = INTR_MASK; + ehci_prepare_ports_for_controller_resume(ehci); if (!hcd->self.root_hub->do_remote_wakeup) mask &= ~STS_PCD; ehci_writel(ehci, mask, &ehci->regs->intr_enable); diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 0e26aa13f158..5cd967d28938 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -313,6 +313,7 @@ static int ehci_fsl_drv_suspend(struct device *dev) struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); void __iomem *non_ehci = hcd->regs; + ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd)); if (!fsl_deep_sleep()) return 0; @@ -327,6 +328,7 @@ static int ehci_fsl_drv_resume(struct device *dev) struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; + ehci_prepare_ports_for_controller_resume(ehci); if (!fsl_deep_sleep()) return 0; diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index ef956220f854..e7d3d8def282 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -106,12 +106,75 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci) ehci->owned_ports = 0; } +static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, + bool suspending) +{ + int port; + u32 temp; + + /* If remote wakeup is enabled for the root hub but disabled + * for the controller, we must adjust all the port wakeup flags + * when the controller is suspended or resumed. In all other + * cases they don't need to be changed. + */ + if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || + device_may_wakeup(ehci_to_hcd(ehci)->self.controller)) + return; + + /* clear phy low-power mode before changing wakeup flags */ + if (ehci->has_hostpc) { + port = HCS_N_PORTS(ehci->hcs_params); + while (port--) { + u32 __iomem *hostpc_reg; + + hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs + + HOSTPC0 + 4 * port); + temp = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg); + } + msleep(5); + } + + port = HCS_N_PORTS(ehci->hcs_params); + while (port--) { + u32 __iomem *reg = &ehci->regs->port_status[port]; + u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; + u32 t2 = t1 & ~PORT_WAKE_BITS; + + /* If we are suspending the controller, clear the flags. + * If we are resuming the controller, set the wakeup flags. + */ + if (!suspending) { + if (t1 & PORT_CONNECT) + t2 |= PORT_WKOC_E | PORT_WKDISC_E; + else + t2 |= PORT_WKOC_E | PORT_WKCONN_E; + } + ehci_vdbg(ehci, "port %d, %08x -> %08x\n", + port + 1, t1, t2); + ehci_writel(ehci, t2, reg); + } + + /* enter phy low-power mode again */ + if (ehci->has_hostpc) { + port = HCS_N_PORTS(ehci->hcs_params); + while (port--) { + u32 __iomem *hostpc_reg; + + hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs + + HOSTPC0 + 4 * port); + temp = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg); + } + } +} + static int ehci_bus_suspend (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); int port; int mask; - u32 __iomem *hostpc_reg = NULL; + int changed; ehci_dbg(ehci, "suspend root hub\n"); @@ -155,15 +218,13 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) */ ehci->bus_suspended = 0; ehci->owned_ports = 0; + changed = 0; port = HCS_N_PORTS(ehci->hcs_params); while (port--) { u32 __iomem *reg = &ehci->regs->port_status [port]; u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; - u32 t2 = t1; + u32 t2 = t1 & ~PORT_WAKE_BITS; - if (ehci->has_hostpc) - hostpc_reg = (u32 __iomem *)((u8 *)ehci->regs - + HOSTPC0 + 4 * (port & 0xff)); /* keep track of which ports we suspend */ if (t1 & PORT_OWNER) set_bit(port, &ehci->owned_ports); @@ -172,40 +233,45 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) set_bit(port, &ehci->bus_suspended); } - /* enable remote wakeup on all ports */ + /* enable remote wakeup on all ports, if told to do so */ if (hcd->self.root_hub->do_remote_wakeup) { /* only enable appropriate wake bits, otherwise the * hardware can not go phy low power mode. If a race * condition happens here(connection change during bits * set), the port change detection will finally fix it. */ - if (t1 & PORT_CONNECT) { + if (t1 & PORT_CONNECT) t2 |= PORT_WKOC_E | PORT_WKDISC_E; - t2 &= ~PORT_WKCONN_E; - } else { + else t2 |= PORT_WKOC_E | PORT_WKCONN_E; - t2 &= ~PORT_WKDISC_E; - } - } else - t2 &= ~PORT_WAKE_BITS; + } if (t1 != t2) { ehci_vdbg (ehci, "port %d, %08x -> %08x\n", port + 1, t1, t2); ehci_writel(ehci, t2, reg); - if (hostpc_reg) { - u32 t3; + changed = 1; + } + } - spin_unlock_irq(&ehci->lock); - msleep(5);/* 5ms for HCD enter low pwr mode */ - spin_lock_irq(&ehci->lock); - t3 = ehci_readl(ehci, hostpc_reg); - ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg); - t3 = ehci_readl(ehci, hostpc_reg); - ehci_dbg(ehci, "Port%d phy low pwr mode %s\n", + if (changed && ehci->has_hostpc) { + spin_unlock_irq(&ehci->lock); + msleep(5); /* 5 ms for HCD to enter low-power mode */ + spin_lock_irq(&ehci->lock); + + port = HCS_N_PORTS(ehci->hcs_params); + while (port--) { + u32 __iomem *hostpc_reg; + u32 t3; + + hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs + + HOSTPC0 + 4 * port); + t3 = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg); + t3 = ehci_readl(ehci, hostpc_reg); + ehci_dbg(ehci, "Port %d phy low-power mode %s\n", port, (t3 & HOSTPC_PHCD) ? "succeeded" : "failed"); - } } } @@ -291,19 +357,28 @@ static int ehci_bus_resume (struct usb_hcd *hcd) msleep(8); spin_lock_irq(&ehci->lock); + /* clear phy low-power mode before resume */ + if (ehci->bus_suspended && ehci->has_hostpc) { + i = HCS_N_PORTS(ehci->hcs_params); + while (i--) { + if (test_bit(i, &ehci->bus_suspended)) { + u32 __iomem *hostpc_reg; + + hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs + + HOSTPC0 + 4 * i); + temp = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp & ~HOSTPC_PHCD, + hostpc_reg); + } + } + spin_unlock_irq(&ehci->lock); + msleep(5); + spin_lock_irq(&ehci->lock); + } + /* manually resume the ports we suspended during bus_suspend() */ i = HCS_N_PORTS (ehci->hcs_params); while (i--) { - /* clear phy low power mode before resume */ - if (ehci->has_hostpc) { - u32 __iomem *hostpc_reg = - (u32 __iomem *)((u8 *)ehci->regs - + HOSTPC0 + 4 * (i & 0xff)); - temp = ehci_readl(ehci, hostpc_reg); - ehci_writel(ehci, temp & ~HOSTPC_PHCD, - hostpc_reg); - mdelay(5); - } temp = ehci_readl(ehci, &ehci->regs->port_status [i]); temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); if (test_bit(i, &ehci->bus_suspended) && @@ -685,23 +760,25 @@ static int ehci_hub_control ( goto error; if (ehci->no_selective_suspend) break; - if (temp & PORT_SUSPEND) { - if ((temp & PORT_PE) == 0) - goto error; - /* clear phy low power mode before resume */ - if (hostpc_reg) { - temp1 = ehci_readl(ehci, hostpc_reg); - ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, + if (!(temp & PORT_SUSPEND)) + break; + if ((temp & PORT_PE) == 0) + goto error; + + /* clear phy low-power mode before resume */ + if (hostpc_reg) { + temp1 = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, hostpc_reg); - mdelay(5); - } - /* resume signaling for 20 msec */ - temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); - ehci_writel(ehci, temp | PORT_RESUME, - status_reg); - ehci->reset_done [wIndex] = jiffies - + msecs_to_jiffies (20); + spin_unlock_irqrestore(&ehci->lock, flags); + msleep(5);/* wait to leave low-power mode */ + spin_lock_irqsave(&ehci->lock, flags); } + /* resume signaling for 20 msec */ + temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); + ehci_writel(ehci, temp | PORT_RESUME, status_reg); + ehci->reset_done[wIndex] = jiffies + + msecs_to_jiffies(20); break; case USB_PORT_FEAT_C_SUSPEND: clear_bit(wIndex, &ehci->port_c_suspend); diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index d120059bbbf7..d43d176161aa 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -287,23 +287,15 @@ static int ehci_pci_suspend(struct usb_hcd *hcd) msleep(10); /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible, bail out if RH has been resumed. Use - * the spinlock to properly synchronize with possible pending - * RH suspend or resume activity. - * - * This is still racy as hcd->state is manipulated outside of - * any locks =P But that will be a different fix. + * mark HW unaccessible. The PM and USB cores make sure that + * the root hub is either suspended or stopped. */ spin_lock_irqsave (&ehci->lock, flags); - if (hcd->state != HC_STATE_SUSPENDED) { - rc = -EINVAL; - goto bail; - } + ehci_prepare_ports_for_controller_suspend(ehci); ehci_writel(ehci, 0, &ehci->regs->intr_enable); (void)ehci_readl(ehci, &ehci->regs->intr_enable); clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - bail: spin_unlock_irqrestore (&ehci->lock, flags); // could save FLADJ in case of Vaux power loss @@ -333,6 +325,7 @@ static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated) !hibernated) { int mask = INTR_MASK; + ehci_prepare_ports_for_controller_resume(ehci); if (!hcd->self.root_hub->do_remote_wakeup) mask &= ~STS_PCD; ehci_writel(ehci, mask, &ehci->regs->intr_enable); diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 4ebe9ad209e4..650a687f2854 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -536,6 +536,16 @@ struct ehci_fstn { /*-------------------------------------------------------------------------*/ +/* Prepare the PORTSC wakeup flags during controller suspend/resume */ + +#define ehci_prepare_ports_for_controller_suspend(ehci) \ + ehci_adjust_port_wakeup_flags(ehci, true); + +#define ehci_prepare_ports_for_controller_resume(ehci) \ + ehci_adjust_port_wakeup_flags(ehci, false); + +/*-------------------------------------------------------------------------*/ + #ifdef CONFIG_USB_EHCI_ROOT_HUB_TT /* -- cgit v1.2.3-58-ga151 From 2ff78c0c2b67120c8e503268da3f177cae2228a2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:02:00 +0200 Subject: USB: ir-usb: fix double free If the user specifies a custom bulk buffer size we get a double free at port release. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 4a0f51974232..71bdbe06baff 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -312,6 +312,7 @@ static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) kfree(port->read_urb->transfer_buffer); port->read_urb->transfer_buffer = buffer; port->read_urb->transfer_buffer_length = buffer_size; + port->bulk_in_buffer = buffer; buffer = kmalloc(buffer_size, GFP_KERNEL); if (!buffer) { @@ -321,6 +322,7 @@ static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) kfree(port->write_urb->transfer_buffer); port->write_urb->transfer_buffer = buffer; port->write_urb->transfer_buffer_length = buffer_size; + port->bulk_out_buffer = buffer; port->bulk_out_size = buffer_size; } -- cgit v1.2.3-58-ga151 From 6f6ed696945c9c98fb6e0def32d29411d958a6fa Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:02:01 +0200 Subject: USB: ir-usb: allow custom bulk buffer size without reallocation Use usb_serial_driver bulk_in_size and bulk_out_size to make sure buffers of appropriate sizes are allocated in the first place rather than reallocating them at every open. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 30 +++++------------------------- 1 file changed, 5 insertions(+), 25 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 71bdbe06baff..aaebb70aca59 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -297,35 +297,10 @@ static int ir_startup(struct usb_serial *serial) static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) { - char *buffer; int result = 0; dbg("%s - port %d", __func__, port->number); - if (buffer_size) { - /* override the default buffer sizes */ - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", __func__); - return -ENOMEM; - } - kfree(port->read_urb->transfer_buffer); - port->read_urb->transfer_buffer = buffer; - port->read_urb->transfer_buffer_length = buffer_size; - port->bulk_in_buffer = buffer; - - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", __func__); - return -ENOMEM; - } - kfree(port->write_urb->transfer_buffer); - port->write_urb->transfer_buffer = buffer; - port->write_urb->transfer_buffer_length = buffer_size; - port->bulk_out_buffer = buffer; - port->bulk_out_size = buffer_size; - } - /* Start reading from the device */ usb_fill_bulk_urb( port->read_urb, @@ -585,6 +560,11 @@ static int __init ir_init(void) { int retval; + if (buffer_size) { + ir_device.bulk_in_size = buffer_size; + ir_device.bulk_out_size = buffer_size; + } + retval = usb_serial_register(&ir_device); if (retval) goto failed_usb_serial_register; -- cgit v1.2.3-58-ga151 From df66e8a2afef506e303f931741193c7cf8fe0794 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:02:02 +0200 Subject: USB: ir-usb: fix set_termios race Use dynamically allocated urb for baudrate changes rather than unconditionally submitting the port write urb which may already be in use. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 63 +++++++++++++++++++++++++++++++++------------ 1 file changed, 47 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index aaebb70aca59..d8490eaeb234 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -469,9 +469,23 @@ static void ir_read_bulk_callback(struct urb *urb) return; } +static void ir_set_termios_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + int status = urb->status; + + dbg("%s - port %d", __func__, port->number); + + kfree(urb->transfer_buffer); + + if (status) + dbg("%s - non-zero urb status: %d", __func__, status); +} + static void ir_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { + struct urb *urb; unsigned char *transfer_buffer; int result; speed_t baud; @@ -525,35 +539,52 @@ static void ir_set_termios(struct tty_struct *tty, else ir_xbof = ir_xbof_change(xbof) ; - /* FIXME need to check to see if our write urb is busy right - * now, or use a urb pool. - * + /* Only speed changes are supported */ + tty_termios_copy_hw(tty->termios, old_termios); + tty_encode_baud_rate(tty, baud, baud); + + /* * send the baud change out on an "empty" data packet */ - transfer_buffer = port->write_urb->transfer_buffer; + urb = usb_alloc_urb(0, GFP_KERNEL); + if (!urb) { + dev_err(&port->dev, "%s - no more urbs\n", __func__); + return; + } + transfer_buffer = kmalloc(1, GFP_KERNEL); + if (!transfer_buffer) { + dev_err(&port->dev, "%s - out of memory\n", __func__); + goto err_buf; + } + *transfer_buffer = ir_xbof | ir_baud; usb_fill_bulk_urb( - port->write_urb, + urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, + transfer_buffer, 1, - ir_write_bulk_callback, + ir_set_termios_callback, port); - port->write_urb->transfer_flags = URB_ZERO_PACKET; + urb->transfer_flags = URB_ZERO_PACKET; - result = usb_submit_urb(port->write_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); + result = usb_submit_urb(urb, GFP_KERNEL); + if (result) { + dev_err(&port->dev, "%s - failed to submit urb: %d\n", + __func__, result); + goto err_subm; + } - /* Only speed changes are supported */ - tty_termios_copy_hw(tty->termios, old_termios); - tty_encode_baud_rate(tty, baud, baud); + usb_free_urb(urb); + + return; +err_subm: + kfree(transfer_buffer); +err_buf: + usb_free_urb(urb); } static int __init ir_init(void) -- cgit v1.2.3-58-ga151 From f4a4cbb2047ec6b0175a08e5bcd78a697773390d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:02:03 +0200 Subject: USB: ir-usb: reimplement using generic framework Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 197 +++++++++----------------------------------- 1 file changed, 38 insertions(+), 159 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index d8490eaeb234..e7087f9fe479 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -3,6 +3,7 @@ * * Copyright (C) 2001-2002 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2002 Gary Brubaker (xavyer@ix.netcom.com) + * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -72,8 +73,8 @@ /* * Version Information */ -#define DRIVER_VERSION "v0.4" -#define DRIVER_AUTHOR "Greg Kroah-Hartman " +#define DRIVER_VERSION "v0.5" +#define DRIVER_AUTHOR "Greg Kroah-Hartman , Johan Hovold " #define DRIVER_DESC "USB IR Dongle driver" static int debug; @@ -87,11 +88,9 @@ static int xbof = -1; static int ir_startup (struct usb_serial *serial); static int ir_open(struct tty_struct *tty, struct usb_serial_port *port); -static void ir_close(struct usb_serial_port *port); -static int ir_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static void ir_write_bulk_callback (struct urb *urb); -static void ir_read_bulk_callback (struct urb *urb); +static int ir_prepare_write_buffer(struct usb_serial_port *port, + void *dest, size_t size); +static void ir_process_read_urb(struct urb *urb); static void ir_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); @@ -130,10 +129,8 @@ static struct usb_serial_driver ir_device = { .set_termios = ir_set_termios, .attach = ir_startup, .open = ir_open, - .close = ir_close, - .write = ir_write, - .write_bulk_callback = ir_write_bulk_callback, - .read_bulk_callback = ir_read_bulk_callback, + .prepare_write_buffer = ir_prepare_write_buffer, + .process_read_urb = ir_process_read_urb, }; static inline void irda_usb_dump_class_desc(struct usb_irda_cs_descriptor *desc) @@ -198,7 +195,6 @@ error: return NULL; } - static u8 ir_xbof_change(u8 xbof) { u8 result; @@ -237,7 +233,6 @@ static u8 ir_xbof_change(u8 xbof) return(result); } - static int ir_startup(struct usb_serial *serial) { struct usb_irda_cs_descriptor *irda_desc; @@ -297,60 +292,21 @@ static int ir_startup(struct usb_serial *serial) static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) { - int result = 0; + int i; dbg("%s - port %d", __func__, port->number); - /* Start reading from the device */ - usb_fill_bulk_urb( - port->read_urb, - port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ir_read_bulk_callback, - port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); - - return result; -} - -static void ir_close(struct usb_serial_port *port) -{ - dbg("%s - port %d", __func__, port->number); + for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) + port->write_urbs[i]->transfer_flags = URB_ZERO_PACKET; - /* shutdown our bulk read */ - usb_kill_urb(port->read_urb); + /* Start reading from the device */ + return usb_serial_generic_open(tty, port); } -static int ir_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) +static int ir_prepare_write_buffer(struct usb_serial_port *port, + void *dest, size_t size) { - unsigned char *transfer_buffer; - int result; - int transfer_size; - - dbg("%s - port = %d, count = %d", __func__, port->number, count); - - if (count == 0) - return 0; - - spin_lock_bh(&port->lock); - if (port->write_urb_busy) { - spin_unlock_bh(&port->lock); - dbg("%s - already writing", __func__); - return 0; - } - port->write_urb_busy = 1; - spin_unlock_bh(&port->lock); - - transfer_buffer = port->write_urb->transfer_buffer; - transfer_size = min(count, port->bulk_out_size - 1); + unsigned char *buf = dest; /* * The first byte of the packet we send to the device contains an @@ -359,114 +315,37 @@ static int ir_write(struct tty_struct *tty, struct usb_serial_port *port, * * See section 5.4.2.2 of the USB IrDA spec. */ - *transfer_buffer = ir_xbof | ir_baud; - ++transfer_buffer; - - memcpy(transfer_buffer, buf, transfer_size); - - usb_fill_bulk_urb( - port->write_urb, - port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, - transfer_size + 1, - ir_write_bulk_callback, - port); + *buf = ir_xbof | ir_baud; - port->write_urb->transfer_flags = URB_ZERO_PACKET; - - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) { - port->write_urb_busy = 0; - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - } else - result = transfer_size; - - return result; + return kfifo_out_locked(&port->write_fifo, buf + 1, size - 1, + &port->lock); } -static void ir_write_bulk_callback(struct urb *urb) +static void ir_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); + unsigned char *data = urb->transfer_buffer; + struct tty_struct *tty; - port->write_urb_busy = 0; - if (status) { - dbg("%s - nonzero write bulk status received: %d", - __func__, status); + if (!urb->actual_length) return; - } - - usb_serial_debug_data( - debug, - &port->dev, - __func__, - urb->actual_length, - urb->transfer_buffer); - - usb_serial_port_softint(port); -} - -static void ir_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; - int result; - int status = urb->status; + /* + * The first byte of the packet we get from the device + * contains a busy indicator and baud rate change. + * See section 5.4.1.2 of the USB IrDA spec. + */ + if (*data & 0x0f) + ir_baud = *data & 0x0f; - dbg("%s - port %d", __func__, port->number); + if (urb->actual_length == 1) + return; - switch (status) { - case 0: /* Successful */ - /* - * The first byte of the packet we get from the device - * contains a busy indicator and baud rate change. - * See section 5.4.1.2 of the USB IrDA spec. - */ - if ((*data & 0x0f) > 0) - ir_baud = *data & 0x0f; - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - tty = tty_port_tty_get(&port->port); - tty_insert_flip_string(tty, data+1, urb->actual_length - 1); - tty_flip_buffer_push(tty); - tty_kref_put(tty); - - /* - * No break here. - * We want to resubmit the urb so we can read - * again. - */ - - case -EPROTO: /* taking inspiration from pl2303.c */ - /* Continue trying to always read */ - usb_fill_bulk_urb( - port->read_urb, - port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ir_read_bulk_callback, - port); - - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", - __func__, result); - break ; - default: - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - break ; - } - return; + tty = tty_port_tty_get(&port->port); + if (!tty) + return; + tty_insert_flip_string(tty, data + 1, urb->actual_length - 1); + tty_flip_buffer_push(tty); + tty_kref_put(tty); } static void ir_set_termios_callback(struct urb *urb) -- cgit v1.2.3-58-ga151 From 605204bfb0047523b3acda535163875a75268a6a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:33:08 +0200 Subject: USB: ipw: clean up dtr-rts handling No need to raise dtr/rts in open as this is taken care of by tty layer. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ipw.c | 43 ++++++------------------------------------- 1 file changed, 6 insertions(+), 37 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index e1d07840cee6..18b335e0959c 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -267,35 +267,6 @@ static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port) dev_err(&port->dev, "initial flowcontrol failed (error = %d)\n", result); - - /*--5: raise the dtr */ - dbg("%s:raising dtr", __func__); - result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - IPW_SIO_SET_PIN, - USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, - IPW_PIN_SETDTR, - 0, - NULL, - 0, - 200000); - if (result < 0) - dev_err(&port->dev, - "setting dtr failed (error = %d)\n", result); - - /*--6: raise the rts */ - dbg("%s:raising rts", __func__); - result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - IPW_SIO_SET_PIN, - USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, - IPW_PIN_SETRTS, - 0, - NULL, - 0, - 200000); - if (result < 0) - dev_err(&port->dev, - "setting dtr failed (error = %d)\n", result); - kfree(buf_flow_init); return 0; } @@ -305,8 +276,8 @@ static void ipw_dtr_rts(struct usb_serial_port *port, int on) struct usb_device *dev = port->serial->dev; int result; - /*--1: drop the dtr */ - dbg("%s:dropping dtr", __func__); + dbg("%s: on = %d", __func__, on); + result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), IPW_SIO_SET_PIN, USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, @@ -316,22 +287,20 @@ static void ipw_dtr_rts(struct usb_serial_port *port, int on) 0, 200000); if (result < 0) - dev_err(&port->dev, "dropping dtr failed (error = %d)\n", + dev_err(&port->dev, "setting dtr failed (error = %d)\n", result); - /*--2: drop the rts */ - dbg("%s:dropping rts", __func__); result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), IPW_SIO_SET_PIN, USB_TYPE_VENDOR | - USB_RECIP_INTERFACE | USB_DIR_OUT, + USB_RECIP_INTERFACE | USB_DIR_OUT, on ? IPW_PIN_SETRTS : IPW_PIN_CLRRTS, 0, NULL, 0, 200000); if (result < 0) - dev_err(&port->dev, - "dropping rts failed (error = %d)\n", result); + dev_err(&port->dev, "setting rts failed (error = %d)\n", + result); } static void ipw_close(struct usb_serial_port *port) -- cgit v1.2.3-58-ga151 From 55c6d85cabb33461139e430f48b9dea794d46f67 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:33:09 +0200 Subject: USB: ipw: remove dummy port_probe and port_remove Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ipw.c | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index 18b335e0959c..585ec1e237b6 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -405,17 +405,6 @@ static int ipw_write(struct tty_struct *tty, struct usb_serial_port *port, return count; } -static int ipw_probe(struct usb_serial_port *port) -{ - return 0; -} - -static int ipw_disconnect(struct usb_serial_port *port) -{ - usb_set_serial_port_data(port, NULL); - return 0; -} - static struct usb_serial_driver ipw_device = { .driver = { .owner = THIS_MODULE, @@ -428,8 +417,6 @@ static struct usb_serial_driver ipw_device = { .open = ipw_open, .close = ipw_close, .dtr_rts = ipw_dtr_rts, - .port_probe = ipw_probe, - .port_remove = ipw_disconnect, .write = ipw_write, .write_bulk_callback = ipw_write_bulk_callback, .read_bulk_callback = ipw_read_bulk_callback, -- cgit v1.2.3-58-ga151 From b2c573790381720e8b0aca1f392b4063f84cfcb6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:33:10 +0200 Subject: USB: ipw: reimplement using generic framework Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ipw.c | 128 ++--------------------------------------------- 1 file changed, 4 insertions(+), 124 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index 585ec1e237b6..ca77e88836bd 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -34,7 +34,6 @@ * DCD, DTR, RTS, CTS which are currently faked. * It's good enough for PPP at this point. It's based off all kinds of * code found in usb/serial and usb/class - * */ #include @@ -52,7 +51,7 @@ /* * Version Information */ -#define DRIVER_VERSION "v0.3" +#define DRIVER_VERSION "v0.4" #define DRIVER_AUTHOR "Roelf Diedericks" #define DRIVER_DESC "IPWireless tty driver" @@ -65,8 +64,6 @@ /* Message sizes */ #define EVENT_BUFFER_SIZE 0xFF #define CHAR2INT16(c1, c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff)) -#define NUM_BULK_URBS 24 -#define NUM_CONTROL_URBS 16 /* vendor/product pairs that are known work with this driver*/ #define IPW_VID 0x0bc3 @@ -151,47 +148,6 @@ static struct usb_driver usb_ipw_driver = { static int debug; -static void ipw_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - unsigned char *data = urb->transfer_buffer; - struct tty_struct *tty; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; - } - - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - tty = tty_port_tty_get(&port->port); - if (tty && urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - } - tty_kref_put(tty); - - /* Continue trying to always read */ - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ipw_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - return; -} - static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_device *dev = port->serial->dev; @@ -229,15 +185,7 @@ static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port) /*--2: Start reading from the device */ dbg("%s: setting up bulk read callback", __func__); - usb_fill_bulk_urb(port->read_urb, dev, - usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress), - port->bulk_in_buffer, - port->bulk_in_size, - ipw_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result < 0) - dbg("%s - usb_submit_urb(read bulk) failed with status %d", - __func__, result); + usb_serial_generic_open(tty, port); /*--3: Tell the modem to open the floodgates on the rx bulk channel */ dbg("%s:asking modem for RxRead (RXBULK_ON)", __func__); @@ -337,72 +285,7 @@ static void ipw_close(struct usb_serial_port *port) dev_err(&port->dev, "Disabling bulk RxRead failed (error = %d)\n", result); - /* shutdown any in-flight urbs that we know about */ - usb_kill_urb(port->read_urb); - usb_kill_urb(port->write_urb); -} - -static void ipw_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - int status = urb->status; - - dbg("%s", __func__); - - port->write_urb_busy = 0; - - if (status) - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - - usb_serial_port_softint(port); -} - -static int ipw_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct usb_device *dev = port->serial->dev; - int ret; - - dbg("%s: TOP: count=%d, in_interrupt=%ld", __func__, - count, in_interrupt()); - - if (count == 0) { - dbg("%s - write request of 0 bytes", __func__); - return 0; - } - - spin_lock_bh(&port->lock); - if (port->write_urb_busy) { - spin_unlock_bh(&port->lock); - dbg("%s - already writing", __func__); - return 0; - } - port->write_urb_busy = 1; - spin_unlock_bh(&port->lock); - - count = min(count, port->bulk_out_size); - memcpy(port->bulk_out_buffer, buf, count); - - dbg("%s count now:%d", __func__, count); - - usb_fill_bulk_urb(port->write_urb, dev, - usb_sndbulkpipe(dev, port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, - count, - ipw_write_bulk_callback, - port); - - ret = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (ret != 0) { - port->write_urb_busy = 0; - dbg("%s - usb_submit_urb(write bulk) failed with error = %d", - __func__, ret); - return ret; - } - - dbg("%s returning %d", __func__, count); - return count; + usb_serial_generic_close(port); } static struct usb_serial_driver ipw_device = { @@ -411,15 +294,12 @@ static struct usb_serial_driver ipw_device = { .name = "ipw", }, .description = "IPWireless converter", - .usb_driver = &usb_ipw_driver, + .usb_driver = &usb_ipw_driver, .id_table = usb_ipw_ids, .num_ports = 1, .open = ipw_open, .close = ipw_close, .dtr_rts = ipw_dtr_rts, - .write = ipw_write, - .write_bulk_callback = ipw_write_bulk_callback, - .read_bulk_callback = ipw_read_bulk_callback, }; -- cgit v1.2.3-58-ga151 From 1ac93a30398774e084c12e25b3a74285ee4dba90 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 13 May 2010 22:00:40 +0200 Subject: USB: io_edgeport: Use kzalloc Use kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_edgeport.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 3ef8df0ef888..76e6fb3aab7a 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -3020,7 +3020,7 @@ static int edge_startup(struct usb_serial *serial) /* set up our port private structures */ for (i = 0; i < serial->num_ports; ++i) { - edge_port = kmalloc(sizeof(struct edgeport_port), GFP_KERNEL); + edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); if (edge_port == NULL) { dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); @@ -3033,7 +3033,6 @@ static int edge_startup(struct usb_serial *serial) kfree(edge_serial); return -ENOMEM; } - memset(edge_port, 0, sizeof(struct edgeport_port)); spin_lock_init(&edge_port->ep_lock); edge_port->port = serial->port[i]; usb_set_serial_port_data(serial->port[i], edge_port); -- cgit v1.2.3-58-ga151 From 12e7eca9630c0e00284e8a3995fc5eceaa0c199e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 22:25:09 +0200 Subject: USB: cp210x: remove redundant disconnect() Remove cp210x_disconnect which is used to kill traffic although this is already handled by the generic framework. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 29 ----------------------------- 1 file changed, 29 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index f95a590e1993..25e343ff61e7 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -34,7 +34,6 @@ * Function Prototypes */ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); -static void cp210x_cleanup(struct usb_serial_port *); static void cp210x_close(struct usb_serial_port *); static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *port); @@ -49,7 +48,6 @@ static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, unsigned int, unsigned int); static void cp210x_break_ctl(struct tty_struct *, int); static int cp210x_startup(struct usb_serial *); -static void cp210x_disconnect(struct usb_serial *); static void cp210x_dtr_rts(struct usb_serial_port *p, int on); static int cp210x_carrier_raised(struct usb_serial_port *p); @@ -147,7 +145,6 @@ static struct usb_serial_driver cp210x_device = { .tiocmget = cp210x_tiocmget, .tiocmset = cp210x_tiocmset, .attach = cp210x_startup, - .disconnect = cp210x_disconnect, .dtr_rts = cp210x_dtr_rts, .carrier_raised = cp210x_carrier_raised }; @@ -391,21 +388,6 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) return 0; } -static void cp210x_cleanup(struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - - dbg("%s - port %d", __func__, port->number); - - if (serial->dev) { - /* shutdown any bulk reads that might be going on */ - if (serial->num_bulk_out) - usb_kill_urb(port->write_urb); - if (serial->num_bulk_in) - usb_kill_urb(port->read_urb); - } -} - static void cp210x_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); @@ -794,17 +776,6 @@ static int cp210x_startup(struct usb_serial *serial) return 0; } -static void cp210x_disconnect(struct usb_serial *serial) -{ - int i; - - dbg("%s", __func__); - - /* Stop reads and writes on all ports */ - for (i = 0; i < serial->num_ports; ++i) - cp210x_cleanup(serial->port[i]); -} - static int __init cp210x_init(void) { int retval; -- cgit v1.2.3-58-ga151 From 7f1cccd3ec8789e52897bc34420ca81a5e2edeab Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Fri, 14 May 2010 18:33:18 +0400 Subject: USB: FHCI: cq_get() should check kfifo_out()'s return value Since commit 7acd72eb85f1c7a15e8b5eb554994949241737f1 ("kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out..."), kfifo_out() is marked __must_check, and that causes gcc to produce lots of warnings like this: CC drivers/usb/host/fhci-mem.o In file included from drivers/usb/host/fhci-hcd.c:34: drivers/usb/host/fhci.h: In function 'cq_get': drivers/usb/host/fhci.h:520: warning: ignoring return value of 'kfifo_out', declared with attribute warn_unused_result ... This patch fixes the issue by properly checking the return value. Signed-off-by: Anton Vorontsov Cc: stable [.33 and .34] Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/fhci.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h index 649ab07308f2..71c3caaea4c1 100644 --- a/drivers/usb/host/fhci.h +++ b/drivers/usb/host/fhci.h @@ -20,6 +20,7 @@ #include #include +#include #include #include #include @@ -515,9 +516,13 @@ static inline int cq_put(struct kfifo *kfifo, void *p) static inline void *cq_get(struct kfifo *kfifo) { - void *p = NULL; + unsigned int sz; + void *p; + + sz = kfifo_out(kfifo, (void *)&p, sizeof(p)); + if (sz != sizeof(p)) + return NULL; - kfifo_out(kfifo, (void *)&p, sizeof(p)); return p; } -- cgit v1.2.3-58-ga151 From 42047699fae79190fd7ebd0b02fa4bde016adc04 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: mct_u232.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mct_u232.h | 254 ++++++++++++++++++++++-------------------- 1 file changed, 133 insertions(+), 121 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/mct_u232.h b/drivers/usb/serial/mct_u232.h index 7417d5ce1e23..3a3f5e6b8f96 100644 --- a/drivers/usb/serial/mct_u232.h +++ b/drivers/usb/serial/mct_u232.h @@ -42,36 +42,44 @@ #define MCT_U232_SET_REQUEST_TYPE 0x40 #define MCT_U232_GET_REQUEST_TYPE 0xc0 -#define MCT_U232_GET_MODEM_STAT_REQUEST 2 /* Get Modem Status Register (MSR) */ -#define MCT_U232_GET_MODEM_STAT_SIZE 1 +/* Get Modem Status Register (MSR) */ +#define MCT_U232_GET_MODEM_STAT_REQUEST 2 +#define MCT_U232_GET_MODEM_STAT_SIZE 1 -#define MCT_U232_GET_LINE_CTRL_REQUEST 6 /* Get Line Control Register (LCR) */ -#define MCT_U232_GET_LINE_CTRL_SIZE 1 /* ... not used by this driver */ +/* Get Line Control Register (LCR) */ +/* ... not used by this driver */ +#define MCT_U232_GET_LINE_CTRL_REQUEST 6 +#define MCT_U232_GET_LINE_CTRL_SIZE 1 -#define MCT_U232_SET_BAUD_RATE_REQUEST 5 /* Set Baud Rate Divisor */ -#define MCT_U232_SET_BAUD_RATE_SIZE 4 +/* Set Baud Rate Divisor */ +#define MCT_U232_SET_BAUD_RATE_REQUEST 5 +#define MCT_U232_SET_BAUD_RATE_SIZE 4 -#define MCT_U232_SET_LINE_CTRL_REQUEST 7 /* Set Line Control Register (LCR) */ -#define MCT_U232_SET_LINE_CTRL_SIZE 1 +/* Set Line Control Register (LCR) */ +#define MCT_U232_SET_LINE_CTRL_REQUEST 7 +#define MCT_U232_SET_LINE_CTRL_SIZE 1 -#define MCT_U232_SET_MODEM_CTRL_REQUEST 10 /* Set Modem Control Register (MCR) */ -#define MCT_U232_SET_MODEM_CTRL_SIZE 1 +/* Set Modem Control Register (MCR) */ +#define MCT_U232_SET_MODEM_CTRL_REQUEST 10 +#define MCT_U232_SET_MODEM_CTRL_SIZE 1 -/* This USB device request code is not well understood. It is transmitted by - the MCT-supplied Windows driver whenever the baud rate changes. -*/ -#define MCT_U232_SET_UNKNOWN1_REQUEST 11 /* Unknown functionality */ -#define MCT_U232_SET_UNKNOWN1_SIZE 1 +/* + * This USB device request code is not well understood. It is transmitted by + * the MCT-supplied Windows driver whenever the baud rate changes. + */ +#define MCT_U232_SET_UNKNOWN1_REQUEST 11 /* Unknown functionality */ +#define MCT_U232_SET_UNKNOWN1_SIZE 1 -/* This USB device request code appears to control whether CTS is required - during transmission. - - Sending a zero byte allows data transmission to a device which is not - asserting CTS. Sending a '1' byte will cause transmission to be deferred - until the device asserts CTS. -*/ -#define MCT_U232_SET_CTS_REQUEST 12 -#define MCT_U232_SET_CTS_SIZE 1 +/* + * This USB device request code appears to control whether CTS is required + * during transmission. + * + * Sending a zero byte allows data transmission to a device which is not + * asserting CTS. Sending a '1' byte will cause transmission to be deferred + * until the device asserts CTS. + */ +#define MCT_U232_SET_CTS_REQUEST 12 +#define MCT_U232_SET_CTS_SIZE 1 #define MCT_U232_MAX_SIZE 4 /* of MCT_XXX_SIZE */ @@ -81,7 +89,8 @@ * and "Intel solution". They are the regular MCT and "Sitecom" for us. * This is pointless to document in the header, see the code for the bits. */ -static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result); +static int mct_u232_calculate_baud_rate(struct usb_serial *serial, + speed_t value, speed_t *result); /* * Line Control Register (LCR) @@ -125,16 +134,16 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value /* * Line Status Register (LSR) */ -#define MCT_U232_LSR_INDEX 1 /* data[index] */ -#define MCT_U232_LSR_ERR 0x80 /* OE | PE | FE | BI */ -#define MCT_U232_LSR_TEMT 0x40 /* transmit register empty */ -#define MCT_U232_LSR_THRE 0x20 /* transmit holding register empty */ -#define MCT_U232_LSR_BI 0x10 /* break indicator */ -#define MCT_U232_LSR_FE 0x08 /* framing error */ -#define MCT_U232_LSR_OE 0x02 /* overrun error */ -#define MCT_U232_LSR_PE 0x04 /* parity error */ -#define MCT_U232_LSR_OE 0x02 /* overrun error */ -#define MCT_U232_LSR_DR 0x01 /* receive data ready */ +#define MCT_U232_LSR_INDEX 1 /* data[index] */ +#define MCT_U232_LSR_ERR 0x80 /* OE | PE | FE | BI */ +#define MCT_U232_LSR_TEMT 0x40 /* transmit register empty */ +#define MCT_U232_LSR_THRE 0x20 /* transmit holding register empty */ +#define MCT_U232_LSR_BI 0x10 /* break indicator */ +#define MCT_U232_LSR_FE 0x08 /* framing error */ +#define MCT_U232_LSR_OE 0x02 /* overrun error */ +#define MCT_U232_LSR_PE 0x04 /* parity error */ +#define MCT_U232_LSR_OE 0x02 /* overrun error */ +#define MCT_U232_LSR_DR 0x01 /* receive data ready */ /* ----------------------------------------------------------------------------- @@ -143,10 +152,10 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * * The technical details of the device have been acquired be using "SniffUSB" * and the vendor-supplied device driver (version 2.3A) under Windows98. To - * identify the USB vendor-specific requests and to assign them to terminal + * identify the USB vendor-specific requests and to assign them to terminal * settings (flow control, baud rate, etc.) the program "SerialSettings" from * William G. Greathouse has been proven to be very useful. I also used the - * Win98 "HyperTerminal" and "usb-robot" on Linux for testing. The results and + * Win98 "HyperTerminal" and "usb-robot" on Linux for testing. The results and * observations are summarized below: * * The USB requests seem to be directly mapped to the registers of a 8250, @@ -186,33 +195,33 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * Data: LCR (see below) * * Bit 7: Divisor Latch Access Bit (DLAB). When set, access to the data - * transmit/receive register (THR/RBR) and the Interrupt Enable Register - * (IER) is disabled. Any access to these ports is now redirected to the - * Divisor Latch Registers. Setting this bit, loading the Divisor - * Registers, and clearing DLAB should be done with interrupts disabled. + * transmit/receive register (THR/RBR) and the Interrupt Enable Register + * (IER) is disabled. Any access to these ports is now redirected to the + * Divisor Latch Registers. Setting this bit, loading the Divisor + * Registers, and clearing DLAB should be done with interrupts disabled. * Bit 6: Set Break. When set to "1", the transmitter begins to transmit - * continuous Spacing until this bit is set to "0". This overrides any - * bits of characters that are being transmitted. + * continuous Spacing until this bit is set to "0". This overrides any + * bits of characters that are being transmitted. * Bit 5: Stick Parity. When parity is enabled, setting this bit causes parity - * to always be "1" or "0", based on the value of Bit 4. + * to always be "1" or "0", based on the value of Bit 4. * Bit 4: Even Parity Select (EPS). When parity is enabled and Bit 5 is "0", - * setting this bit causes even parity to be transmitted and expected. - * Otherwise, odd parity is used. + * setting this bit causes even parity to be transmitted and expected. + * Otherwise, odd parity is used. * Bit 3: Parity Enable (PEN). When set to "1", a parity bit is inserted - * between the last bit of the data and the Stop Bit. The UART will also - * expect parity to be present in the received data. + * between the last bit of the data and the Stop Bit. The UART will also + * expect parity to be present in the received data. * Bit 2: Number of Stop Bits (STB). If set to "1" and using 5-bit data words, - * 1.5 Stop Bits are transmitted and expected in each data word. For - * 6, 7 and 8-bit data words, 2 Stop Bits are transmitted and expected. - * When this bit is set to "0", one Stop Bit is used on each data word. + * 1.5 Stop Bits are transmitted and expected in each data word. For + * 6, 7 and 8-bit data words, 2 Stop Bits are transmitted and expected. + * When this bit is set to "0", one Stop Bit is used on each data word. * Bit 1: Word Length Select Bit #1 (WLSB1) * Bit 0: Word Length Select Bit #0 (WLSB0) - * Together these bits specify the number of bits in each data word. - * 1 0 Word Length - * 0 0 5 Data Bits - * 0 1 6 Data Bits - * 1 0 7 Data Bits - * 1 1 8 Data Bits + * Together these bits specify the number of bits in each data word. + * 1 0 Word Length + * 0 0 5 Data Bits + * 0 1 6 Data Bits + * 1 0 7 Data Bits + * 1 1 8 Data Bits * * SniffUSB observations: Bit 7 seems not to be used. There seem to be two bugs * in the Win98 driver: the break does not work (bit 6 is not asserted) and the @@ -234,20 +243,20 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * Bit 6: Reserved, always 0. * Bit 5: Reserved, always 0. * Bit 4: Loop-Back Enable. When set to "1", the UART transmitter and receiver - * are internally connected together to allow diagnostic operations. In - * addition, the UART modem control outputs are connected to the UART - * modem control inputs. CTS is connected to RTS, DTR is connected to - * DSR, OUT1 is connected to RI, and OUT 2 is connected to DCD. + * are internally connected together to allow diagnostic operations. In + * addition, the UART modem control outputs are connected to the UART + * modem control inputs. CTS is connected to RTS, DTR is connected to + * DSR, OUT1 is connected to RI, and OUT 2 is connected to DCD. * Bit 3: OUT 2. An auxiliary output that the host processor may set high or - * low. In the IBM PC serial adapter (and most clones), OUT 2 is used - * to tri-state (disable) the interrupt signal from the - * 8250/16450/16550 UART. + * low. In the IBM PC serial adapter (and most clones), OUT 2 is used + * to tri-state (disable) the interrupt signal from the + * 8250/16450/16550 UART. * Bit 2: OUT 1. An auxiliary output that the host processor may set high or - * low. This output is not used on the IBM PC serial adapter. + * low. This output is not used on the IBM PC serial adapter. * Bit 1: Request to Send (RTS). When set to "1", the output of the UART -RTS - * line is Low (Active). + * line is Low (Active). * Bit 0: Data Terminal Ready (DTR). When set to "1", the output of the UART - * -DTR line is Low (Active). + * -DTR line is Low (Active). * * SniffUSB observations: Bit 2 and 4 seem not to be used but bit 3 has been * seen _always_ set. @@ -264,22 +273,22 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * Data: MSR (see below) * * Bit 7: Data Carrier Detect (CD). Reflects the state of the DCD line on the - * UART. + * UART. * Bit 6: Ring Indicator (RI). Reflects the state of the RI line on the UART. * Bit 5: Data Set Ready (DSR). Reflects the state of the DSR line on the UART. * Bit 4: Clear To Send (CTS). Reflects the state of the CTS line on the UART. * Bit 3: Delta Data Carrier Detect (DDCD). Set to "1" if the -DCD line has - * changed state one more more times since the last time the MSR was - * read by the host. + * changed state one more more times since the last time the MSR was + * read by the host. * Bit 2: Trailing Edge Ring Indicator (TERI). Set to "1" if the -RI line has - * had a low to high transition since the last time the MSR was read by - * the host. + * had a low to high transition since the last time the MSR was read by + * the host. * Bit 1: Delta Data Set Ready (DDSR). Set to "1" if the -DSR line has changed - * state one more more times since the last time the MSR was read by the - * host. + * state one more more times since the last time the MSR was read by the + * host. * Bit 0: Delta Clear To Send (DCTS). Set to "1" if the -CTS line has changed - * state one more times since the last time the MSR was read by the - * host. + * state one more times since the last time the MSR was read by the + * host. * * SniffUSB observations: the MSR is also returned as first byte on the * interrupt-in endpoint 0x83 to signal changes of modem status lines. The USB @@ -290,31 +299,34 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * -------------------------- * * Bit 7 Error in Receiver FIFO. On the 8250/16450 UART, this bit is zero. - * This bit is set to "1" when any of the bytes in the FIFO have one or - * more of the following error conditions: PE, FE, or BI. + * This bit is set to "1" when any of the bytes in the FIFO have one + * or more of the following error conditions: PE, FE, or BI. * Bit 6 Transmitter Empty (TEMT). When set to "1", there are no words - * remaining in the transmit FIFO or the transmit shift register. The - * transmitter is completely idle. - * Bit 5 Transmitter Holding Register Empty (THRE). When set to "1", the FIFO - * (or holding register) now has room for at least one additional word - * to transmit. The transmitter may still be transmitting when this bit - * is set to "1". + * remaining in the transmit FIFO or the transmit shift register. The + * transmitter is completely idle. + * Bit 5 Transmitter Holding Register Empty (THRE). When set to "1", the + * FIFO (or holding register) now has room for at least one additional + * word to transmit. The transmitter may still be transmitting when + * this bit is set to "1". * Bit 4 Break Interrupt (BI). The receiver has detected a Break signal. - * Bit 3 Framing Error (FE). A Start Bit was detected but the Stop Bit did not - * appear at the expected time. The received word is probably garbled. - * Bit 2 Parity Error (PE). The parity bit was incorrect for the word received. - * Bit 1 Overrun Error (OE). A new word was received and there was no room in - * the receive buffer. The newly-arrived word in the shift register is - * discarded. On 8250/16450 UARTs, the word in the holding register is - * discarded and the newly- arrived word is put in the holding register. + * Bit 3 Framing Error (FE). A Start Bit was detected but the Stop Bit did + * not appear at the expected time. The received word is probably + * garbled. + * Bit 2 Parity Error (PE). The parity bit was incorrect for the word + * received. + * Bit 1 Overrun Error (OE). A new word was received and there was no room + * in the receive buffer. The newly-arrived word in the shift register + * is discarded. On 8250/16450 UARTs, the word in the holding register + * is discarded and the newly- arrived word is put in the holding + * register. * Bit 0 Data Ready (DR). One or more words are in the receive FIFO that the - * host may read. A word must be completely received and moved from the - * shift register into the FIFO (or holding register for 8250/16450 - * designs) before this bit is set. + * host may read. A word must be completely received and moved from + * the shift register into the FIFO (or holding register for + * 8250/16450 designs) before this bit is set. * - * SniffUSB observations: the LSR is returned as second byte on the interrupt-in - * endpoint 0x83 to signal error conditions. Such errors have been seen with - * minicom/zmodem transfers (CRC errors). + * SniffUSB observations: the LSR is returned as second byte on the + * interrupt-in endpoint 0x83 to signal error conditions. Such errors have + * been seen with minicom/zmodem transfers (CRC errors). * * * Unknown #1 @@ -364,16 +376,16 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * -------------- * * SniffUSB observations: the bulk-out endpoint 0x1 and interrupt-in endpoint - * 0x81 is used to transmit and receive characters. The second interrupt-in - * endpoint 0x83 signals exceptional conditions like modem line changes and + * 0x81 is used to transmit and receive characters. The second interrupt-in + * endpoint 0x83 signals exceptional conditions like modem line changes and * errors. The first byte returned is the MSR and the second byte the LSR. * * * Other observations * ------------------ * - * Queued bulk transfers like used in visor.c did not work. - * + * Queued bulk transfers like used in visor.c did not work. + * * * Properties of the USB device used (as found in /var/log/messages) * ----------------------------------------------------------------- @@ -411,26 +423,26 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * bInterface Class:SubClass:Protocol = 00:00:00 * iInterface = 00 * Endpoint: - * bLength = 7 - * bDescriptorType = 05 - * bEndpointAddress = 81 (in) - * bmAttributes = 03 (Interrupt) - * wMaxPacketSize = 0040 - * bInterval = 02 + * bLength = 7 + * bDescriptorType = 05 + * bEndpointAddress = 81 (in) + * bmAttributes = 03 (Interrupt) + * wMaxPacketSize = 0040 + * bInterval = 02 * Endpoint: - * bLength = 7 - * bDescriptorType = 05 - * bEndpointAddress = 01 (out) - * bmAttributes = 02 (Bulk) - * wMaxPacketSize = 0040 - * bInterval = 00 + * bLength = 7 + * bDescriptorType = 05 + * bEndpointAddress = 01 (out) + * bmAttributes = 02 (Bulk) + * wMaxPacketSize = 0040 + * bInterval = 00 * Endpoint: - * bLength = 7 - * bDescriptorType = 05 - * bEndpointAddress = 83 (in) - * bmAttributes = 03 (Interrupt) - * wMaxPacketSize = 0002 - * bInterval = 02 + * bLength = 7 + * bDescriptorType = 05 + * bEndpointAddress = 83 (in) + * bmAttributes = 03 (Interrupt) + * wMaxPacketSize = 0002 + * bInterval = 02 * * * Hardware details (added by Martin Hamilton, 2001/12/06) @@ -440,7 +452,7 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * adaptor, which turns out to simply be a re-badged U232-P9. We * know this because there is a sticky label on the circuit board * which says "U232-P9" ;-) - * + * * The circuit board inside the adaptor contains a Philips PDIUSBD12 * USB endpoint chip and a Philips P87C52UBAA microcontroller with * embedded UART. Exhaustive documentation for these is available at: @@ -449,7 +461,7 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value * http://www.semiconductors.philips.com/pip/pdiusbd12 * * Thanks to Julian Highfield for the pointer to the Philips database. - * + * */ #endif /* __LINUX_USB_SERIAL_MCT_U232_H */ -- cgit v1.2.3-58-ga151 From 1689e993b335e1a22d74f7ddf1b51725ccfc3ade Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: belkin_sa.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/belkin_sa.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/belkin_sa.h b/drivers/usb/serial/belkin_sa.h index c66a6730d38c..c74b58ab56f9 100644 --- a/drivers/usb/serial/belkin_sa.h +++ b/drivers/usb/serial/belkin_sa.h @@ -8,10 +8,10 @@ * and associated source files. Please see the usb/serial files for * individual credits and copyrights. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * * See Documentation/usb/usb-serial.txt for more information on using this * driver @@ -66,7 +66,7 @@ #ifdef WHEN_I_LEARN_THIS #define BELKIN_SA_SET_MAGIC_REQUEST 17 /* I don't know, possibly flush */ /* (always in Wininit sequence before flow control) */ -#define BELKIN_SA_RESET xx /* Reset the port */ +#define BELKIN_SA_RESET xx /* Reset the port */ #define BELKIN_SA_GET_MODEM_STATUS xx /* Force return of modem status register */ #endif -- cgit v1.2.3-58-ga151 From 995834eb37c22ee9fd85324165ff71e9d6da5ae4 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: cypress_m8.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cypress_m8.h | 53 ++++++++++++++++++++++------------------- 1 file changed, 29 insertions(+), 24 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cypress_m8.h b/drivers/usb/serial/cypress_m8.h index 1fd360e04065..67cf60826884 100644 --- a/drivers/usb/serial/cypress_m8.h +++ b/drivers/usb/serial/cypress_m8.h @@ -1,27 +1,32 @@ #ifndef CYPRESS_M8_H #define CYPRESS_M8_H -/* definitions and function prototypes used for the cypress USB to Serial controller */ +/* + * definitions and function prototypes used for the cypress USB to Serial + * controller + */ -/* For sending our feature buffer - controlling serial communication states */ -/* Linux HID has no support for serial devices so we do this through the driver */ -#define HID_REQ_GET_REPORT 0x01 -#define HID_REQ_SET_REPORT 0x09 +/* + * For sending our feature buffer - controlling serial communication states. + * Linux HID has no support for serial devices so we do this through the driver + */ +#define HID_REQ_GET_REPORT 0x01 +#define HID_REQ_SET_REPORT 0x09 /* List other cypress USB to Serial devices here, and add them to the id_table */ /* DeLorme Earthmate USB - a GPS device */ -#define VENDOR_ID_DELORME 0x1163 -#define PRODUCT_ID_EARTHMATEUSB 0x0100 -#define PRODUCT_ID_EARTHMATEUSB_LT20 0x0200 +#define VENDOR_ID_DELORME 0x1163 +#define PRODUCT_ID_EARTHMATEUSB 0x0100 +#define PRODUCT_ID_EARTHMATEUSB_LT20 0x0200 /* Cypress HID->COM RS232 Adapter */ -#define VENDOR_ID_CYPRESS 0x04b4 -#define PRODUCT_ID_CYPHIDCOM 0x5500 +#define VENDOR_ID_CYPRESS 0x04b4 +#define PRODUCT_ID_CYPHIDCOM 0x5500 /* Powercom UPS, chip CY7C63723 */ -#define VENDOR_ID_POWERCOM 0x0d9f -#define PRODUCT_ID_UPS 0x0002 +#define VENDOR_ID_POWERCOM 0x0d9f +#define PRODUCT_ID_UPS 0x0002 /* Nokia CA-42 USB to serial cable */ #define VENDOR_ID_DAZZLE 0x07d0 @@ -29,17 +34,17 @@ /* End of device listing */ /* Used for setting / requesting serial line settings */ -#define CYPRESS_SET_CONFIG 0x01 -#define CYPRESS_GET_CONFIG 0x02 +#define CYPRESS_SET_CONFIG 0x01 +#define CYPRESS_GET_CONFIG 0x02 /* Used for throttle control */ -#define THROTTLED 0x1 -#define ACTUALLY_THROTTLED 0x2 +#define THROTTLED 0x1 +#define ACTUALLY_THROTTLED 0x2 -/* chiptypes - used in case firmware differs from the generic form ... offering - * different baud speeds/etc. +/* + * chiptypes - used in case firmware differs from the generic form ... offering + * different baud speeds/etc. */ - #define CT_EARTHMATE 0x01 #define CT_CYPHIDCOM 0x02 #define CT_CA42V2 0x03 @@ -50,15 +55,15 @@ /* these are sent / read at byte 0 of the input/output hid reports */ /* You can find these values defined in the CY4601 USB to Serial design notes */ -#define CONTROL_DTR 0x20 /* data terminal ready - flow control - host to device */ +#define CONTROL_DTR 0x20 /* data terminal ready - flow control - host to device */ #define UART_DSR 0x20 /* data set ready - flow control - device to host */ -#define CONTROL_RTS 0x10 /* request to send - flow control - host to device */ +#define CONTROL_RTS 0x10 /* request to send - flow control - host to device */ #define UART_CTS 0x10 /* clear to send - flow control - device to host */ -#define UART_RI 0x10 /* ring indicator - modem - device to host */ +#define UART_RI 0x10 /* ring indicator - modem - device to host */ #define UART_CD 0x40 /* carrier detect - modem - device to host */ -#define CYP_ERROR 0x08 /* received from input report - device to host */ +#define CYP_ERROR 0x08 /* received from input report - device to host */ /* Note - the below has nothing to do with the "feature report" reset */ -#define CONTROL_RESET 0x08 /* sent with output report - host to device */ +#define CONTROL_RESET 0x08 /* sent with output report - host to device */ /* End of RS-232 protocol definitions */ -- cgit v1.2.3-58-ga151 From 3bb36aa266f11f762e345cc85499a15d8df7ec51 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: ftdi_sio: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 2 +- drivers/usb/serial/ftdi_sio.h | 126 ++++++++++++++++++++------------------ drivers/usb/serial/ftdi_sio_ids.h | 42 ++++++------- 3 files changed, 88 insertions(+), 82 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 00b938a81f33..97f2d9c1edd6 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -61,7 +61,7 @@ static __u16 product; struct ftdi_private { struct kref kref; - ftdi_chip_type_t chip_type; + enum ftdi_chip_type chip_type; /* type of device, either SIO or FT8U232AM */ int baud_base; /* baud base clock for divisor setting */ int custom_divisor; /* custom_divisor kludge, this is for diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h index ff9bf80327a3..213fe3d61282 100644 --- a/drivers/usb/serial/ftdi_sio.h +++ b/drivers/usb/serial/ftdi_sio.h @@ -23,14 +23,16 @@ */ /* Commands */ -#define FTDI_SIO_RESET 0 /* Reset the port */ -#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */ -#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */ -#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */ -#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the port */ -#define FTDI_SIO_GET_MODEM_STATUS 5 /* Retrieve current value of modem status register */ -#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */ -#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */ +#define FTDI_SIO_RESET 0 /* Reset the port */ +#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */ +#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */ +#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */ +#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of + the port */ +#define FTDI_SIO_GET_MODEM_STATUS 5 /* Retrieve current value of modem + status register */ +#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */ +#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */ #define FTDI_SIO_SET_LATENCY_TIMER 9 /* Set the latency timer */ #define FTDI_SIO_GET_LATENCY_TIMER 10 /* Get the latency timer */ @@ -52,7 +54,7 @@ */ /* Port Identifier Table */ -#define PIT_DEFAULT 0 /* SIOA */ +#define PIT_DEFAULT 0 /* SIOA */ #define PIT_SIOA 1 /* SIOA */ /* The device this driver is tested with one has only one port */ #define PIT_SIOB 2 /* SIOB */ @@ -103,20 +105,21 @@ * wLength: 0 * Data: None * The BaudDivisor values are calculated as follows: - * - BaseClock is either 12000000 or 48000000 depending on the device. FIXME: I wish - * I knew how to detect old chips to select proper base clock! + * - BaseClock is either 12000000 or 48000000 depending on the device. + * FIXME: I wish I knew how to detect old chips to select proper base clock! * - BaudDivisor is a fixed point number encoded in a funny way. * (--WRONG WAY OF THINKING--) * BaudDivisor is a fixed point number encoded with following bit weighs: * (-2)(-1)(13..0). It is a radical with a denominator of 4, so values * end with 0.0 (00...), 0.25 (10...), 0.5 (01...), and 0.75 (11...). * (--THE REALITY--) - * The both-bits-set has quite different meaning from 0.75 - the chip designers - * have decided it to mean 0.125 instead of 0.75. + * The both-bits-set has quite different meaning from 0.75 - the chip + * designers have decided it to mean 0.125 instead of 0.75. * This info looked up in FTDI application note "FT8U232 DEVICES \ Data Rates * and Flow Control Consideration for USB to RS232". * - BaudDivisor = (BaseClock / 16) / BaudRate, where the (=) operation should - * automagically re-encode the resulting value to take fractions into consideration. + * automagically re-encode the resulting value to take fractions into + * consideration. * As all values are integers, some bit twiddling is in order: * BaudDivisor = (BaseClock / 16 / BaudRate) | * (((BaseClock / 2 / BaudRate) & 4) ? 0x4000 // 0.5 @@ -146,7 +149,7 @@ * not supported by the FT8U232AM). */ -typedef enum { +enum ftdi_chip_type { SIO = 1, FT8U232AM = 2, FT232BM = 3, @@ -154,37 +157,36 @@ typedef enum { FT232RL = 5, FT2232H = 6, FT4232H = 7 -} ftdi_chip_type_t; - -typedef enum { - ftdi_sio_b300 = 0, - ftdi_sio_b600 = 1, - ftdi_sio_b1200 = 2, - ftdi_sio_b2400 = 3, - ftdi_sio_b4800 = 4, - ftdi_sio_b9600 = 5, - ftdi_sio_b19200 = 6, - ftdi_sio_b38400 = 7, - ftdi_sio_b57600 = 8, - ftdi_sio_b115200 = 9 -} FTDI_SIO_baudrate_t; +}; + +enum ftdi_sio_baudrate { + ftdi_sio_b300 = 0, + ftdi_sio_b600 = 1, + ftdi_sio_b1200 = 2, + ftdi_sio_b2400 = 3, + ftdi_sio_b4800 = 4, + ftdi_sio_b9600 = 5, + ftdi_sio_b19200 = 6, + ftdi_sio_b38400 = 7, + ftdi_sio_b57600 = 8, + ftdi_sio_b115200 = 9 +}; /* - * The ftdi_8U232AM_xxMHz_byyy constants have been removed. The encoded divisor values - * are calculated internally. + * The ftdi_8U232AM_xxMHz_byyy constants have been removed. The encoded divisor + * values are calculated internally. */ - -#define FTDI_SIO_SET_DATA_REQUEST FTDI_SIO_SET_DATA -#define FTDI_SIO_SET_DATA_REQUEST_TYPE 0x40 -#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8) -#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8) -#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8) -#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8) -#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8) -#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11) -#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11) -#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11) -#define FTDI_SIO_SET_BREAK (0x1 << 14) +#define FTDI_SIO_SET_DATA_REQUEST FTDI_SIO_SET_DATA +#define FTDI_SIO_SET_DATA_REQUEST_TYPE 0x40 +#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8) +#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8) +#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8) +#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8) +#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8) +#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11) +#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11) +#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11) +#define FTDI_SIO_SET_BREAK (0x1 << 14) /* FTDI_SIO_SET_DATA */ /* @@ -287,8 +289,8 @@ typedef enum { * * A value of zero in the hIndex field disables handshaking * - * If Xon/Xoff handshaking is specified, the hValue field should contain the XOFF character - * and the lValue field contains the XON character. + * If Xon/Xoff handshaking is specified, the hValue field should contain the + * XOFF character and the lValue field contains the XON character. */ /* @@ -373,7 +375,10 @@ typedef enum { /* FTDI_SIO_SET_ERROR_CHAR */ -/* Set the parity error replacement character for the specified communications port */ +/* + * Set the parity error replacement character for the specified communications + * port + */ /* * BmRequestType: 0100 0000b @@ -496,9 +501,10 @@ typedef enum { * * IN Endpoint * - * The device reserves the first two bytes of data on this endpoint to contain the current - * values of the modem and line status registers. In the absence of data, the device - * generates a message consisting of these two status bytes every 40 ms + * The device reserves the first two bytes of data on this endpoint to contain + * the current values of the modem and line status registers. In the absence of + * data, the device generates a message consisting of these two status bytes + * every 40 ms * * Byte 0: Modem Status * @@ -530,21 +536,21 @@ typedef enum { #define FTDI_RS0_RI (1 << 6) #define FTDI_RS0_RLSD (1 << 7) -#define FTDI_RS_DR 1 -#define FTDI_RS_OE (1<<1) -#define FTDI_RS_PE (1<<2) -#define FTDI_RS_FE (1<<3) -#define FTDI_RS_BI (1<<4) -#define FTDI_RS_THRE (1<<5) -#define FTDI_RS_TEMT (1<<6) -#define FTDI_RS_FIFO (1<<7) +#define FTDI_RS_DR 1 +#define FTDI_RS_OE (1<<1) +#define FTDI_RS_PE (1<<2) +#define FTDI_RS_FE (1<<3) +#define FTDI_RS_BI (1<<4) +#define FTDI_RS_THRE (1<<5) +#define FTDI_RS_TEMT (1<<6) +#define FTDI_RS_FIFO (1<<7) /* * OUT Endpoint * - * This device reserves the first bytes of data on this endpoint contain the length - * and port identifier of the message. For the FTDI USB Serial converter the port - * identifier is always 1. + * This device reserves the first bytes of data on this endpoint contain the + * length and port identifier of the message. For the FTDI USB Serial converter + * the port identifier is always 1. * * Byte 0: Line Status * diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 75482cbc3998..94d86c3febcb 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -275,8 +275,8 @@ /* * Hameg HO820 and HO870 interface (using VID 0x0403) */ -#define HAMEG_HO820_PID 0xed74 -#define HAMEG_HO870_PID 0xed71 +#define HAMEG_HO820_PID 0xed74 +#define HAMEG_HO870_PID 0xed71 /* * MaxStream devices www.maxstream.net @@ -289,14 +289,14 @@ * and Mike Studer (K6EEP) . * Ian Abbott added a few more from the driver INF file. */ -#define FTDI_MHAM_KW_PID 0xEEE8 /* USB-KW interface */ -#define FTDI_MHAM_YS_PID 0xEEE9 /* USB-YS interface */ -#define FTDI_MHAM_Y6_PID 0xEEEA /* USB-Y6 interface */ -#define FTDI_MHAM_Y8_PID 0xEEEB /* USB-Y8 interface */ -#define FTDI_MHAM_IC_PID 0xEEEC /* USB-IC interface */ -#define FTDI_MHAM_DB9_PID 0xEEED /* USB-DB9 interface */ -#define FTDI_MHAM_RS232_PID 0xEEEE /* USB-RS232 interface */ -#define FTDI_MHAM_Y9_PID 0xEEEF /* USB-Y9 interface */ +#define FTDI_MHAM_KW_PID 0xEEE8 /* USB-KW interface */ +#define FTDI_MHAM_YS_PID 0xEEE9 /* USB-YS interface */ +#define FTDI_MHAM_Y6_PID 0xEEEA /* USB-Y6 interface */ +#define FTDI_MHAM_Y8_PID 0xEEEB /* USB-Y8 interface */ +#define FTDI_MHAM_IC_PID 0xEEEC /* USB-IC interface */ +#define FTDI_MHAM_DB9_PID 0xEEED /* USB-DB9 interface */ +#define FTDI_MHAM_RS232_PID 0xEEEE /* USB-RS232 interface */ +#define FTDI_MHAM_Y9_PID 0xEEEF /* USB-Y9 interface */ /* Domintell products http://www.domintell.com */ #define FTDI_DOMINTELL_DGQG_PID 0xEF50 /* Master */ @@ -483,9 +483,9 @@ * Blackfin gnICE JTAG * http://docs.blackfin.uclinux.org/doku.php?id=hw:jtag:gnice */ -#define ADI_VID 0x0456 -#define ADI_GNICE_PID 0xF000 -#define ADI_GNICEPLUS_PID 0xF001 +#define ADI_VID 0x0456 +#define ADI_GNICE_PID 0xF000 +#define ADI_GNICEPLUS_PID 0xF001 /* * RATOC REX-USB60F @@ -611,13 +611,13 @@ #define SEALEVEL_2802_7_PID 0X2872 /* SeaLINK+8/485 (2802) Port 7 */ #define SEALEVEL_2802_8_PID 0X2882 /* SeaLINK+8/485 (2802) Port 8 */ #define SEALEVEL_2803_1_PID 0X2813 /* SeaLINK+8 (2803) Port 1 */ -#define SEALEVEL_2803_2_PID 0X2823 /* SeaLINK+8 (2803) Port 2 */ -#define SEALEVEL_2803_3_PID 0X2833 /* SeaLINK+8 (2803) Port 3 */ -#define SEALEVEL_2803_4_PID 0X2843 /* SeaLINK+8 (2803) Port 4 */ -#define SEALEVEL_2803_5_PID 0X2853 /* SeaLINK+8 (2803) Port 5 */ -#define SEALEVEL_2803_6_PID 0X2863 /* SeaLINK+8 (2803) Port 6 */ -#define SEALEVEL_2803_7_PID 0X2873 /* SeaLINK+8 (2803) Port 7 */ -#define SEALEVEL_2803_8_PID 0X2883 /* SeaLINK+8 (2803) Port 8 */ +#define SEALEVEL_2803_2_PID 0X2823 /* SeaLINK+8 (2803) Port 2 */ +#define SEALEVEL_2803_3_PID 0X2833 /* SeaLINK+8 (2803) Port 3 */ +#define SEALEVEL_2803_4_PID 0X2843 /* SeaLINK+8 (2803) Port 4 */ +#define SEALEVEL_2803_5_PID 0X2853 /* SeaLINK+8 (2803) Port 5 */ +#define SEALEVEL_2803_6_PID 0X2863 /* SeaLINK+8 (2803) Port 6 */ +#define SEALEVEL_2803_7_PID 0X2873 /* SeaLINK+8 (2803) Port 7 */ +#define SEALEVEL_2803_8_PID 0X2883 /* SeaLINK+8 (2803) Port 8 */ /* * JETI SPECTROMETER SPECBOS 1201 @@ -1013,7 +1013,7 @@ */ #define EVOLUTION_VID 0xDEEE /* Vendor ID */ #define EVOLUTION_ER1_PID 0x0300 /* ER1 Control Module */ -#define EVO_8U232AM_PID 0x02FF /* Evolution robotics RCM2 (FT232AM)*/ +#define EVO_8U232AM_PID 0x02FF /* Evolution robotics RCM2 (FT232AM)*/ #define EVO_HYBRID_PID 0x0302 /* Evolution robotics RCM4 PID (FT232BM)*/ #define EVO_RCM4_PID 0x0303 /* Evolution robotics RCM4 PID */ -- cgit v1.2.3-58-ga151 From a320471147fe61ed9260295958f07cc23ec360c8 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: io_edgeport: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_edgeport.h | 16 +++---- drivers/usb/serial/io_ionsp.h | 95 ++++++++++++++++++++-------------------- drivers/usb/serial/io_ti.h | 92 ++++++++++++++++++++------------------ drivers/usb/serial/io_usbvend.h | 87 ++++++++++++++++-------------------- 4 files changed, 143 insertions(+), 147 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_edgeport.h b/drivers/usb/serial/io_edgeport.h index cb201c1f67f9..dced7ec65470 100644 --- a/drivers/usb/serial/io_edgeport.h +++ b/drivers/usb/serial/io_edgeport.h @@ -34,15 +34,15 @@ -/* The following table is used to map the USBx port number to +/* The following table is used to map the USBx port number to * the device serial number (or physical USB path), */ #define MAX_EDGEPORTS 64 struct comMapper { char SerialNumber[MAX_SERIALNUMBER_LEN+1]; /* Serial number/usb path */ - int numPorts; /* Number of ports */ - int Original[MAX_RS232_PORTS]; /* Port numbers set by IOCTL */ - int Port[MAX_RS232_PORTS]; /* Actual used port numbers */ + int numPorts; /* Number of ports */ + int Original[MAX_RS232_PORTS]; /* Port numbers set by IOCTL */ + int Port[MAX_RS232_PORTS]; /* Actual used port numbers */ }; @@ -51,7 +51,7 @@ struct comMapper { /* /proc/edgeport Interface * This interface uses read/write/lseek interface to talk to the edgeport driver * the following read functions are supported: */ -#define PROC_GET_MAPPING_TO_PATH 1 +#define PROC_GET_MAPPING_TO_PATH 1 #define PROC_GET_COM_ENTRY 2 #define PROC_GET_EDGE_MANUF_DESCRIPTOR 3 #define PROC_GET_BOOT_DESCRIPTOR 4 @@ -64,7 +64,7 @@ struct comMapper { /* the following write functions are supported: */ -#define PROC_SET_COM_MAPPING 1 +#define PROC_SET_COM_MAPPING 1 #define PROC_SET_COM_ENTRY 2 @@ -97,8 +97,8 @@ struct edgeport_product_info { __u8 BoardRev; /* PCB revision level (chg only if s/w visible) */ __u8 BootMajorVersion; /* Boot Firmware version: xx. */ - __u8 BootMinorVersion; /* yy. */ - __le16 BootBuildNumber; /* zzzz (LE format) */ + __u8 BootMinorVersion; /* yy. */ + __le16 BootBuildNumber; /* zzzz (LE format) */ __u8 FirmwareMajorVersion; /* Operational Firmware version:xx. */ __u8 FirmwareMinorVersion; /* yy. */ diff --git a/drivers/usb/serial/io_ionsp.h b/drivers/usb/serial/io_ionsp.h index 092e03d2dfc4..5cc591bae54d 100644 --- a/drivers/usb/serial/io_ionsp.h +++ b/drivers/usb/serial/io_ionsp.h @@ -89,10 +89,10 @@ All 16-bit fields are sent in little-endian (Intel) format. // struct int_status_pkt { - __u16 RxBytesAvail; // Additional bytes available to - // be read from Bulk IN pipe - __u16 TxCredits[ MAX_RS232_PORTS ]; // Additional space available in - // given port's TxBuffer + __u16 RxBytesAvail; // Additional bytes available to + // be read from Bulk IN pipe + __u16 TxCredits[MAX_RS232_PORTS]; // Additional space available in + // given port's TxBuffer }; @@ -115,24 +115,24 @@ struct int_status_pkt { #define IOSP_CMD_STAT_BIT 0x80 // If set, this is command/status header #define IS_CMD_STAT_HDR(Byte1) ((Byte1) & IOSP_CMD_STAT_BIT) -#define IS_DATA_HDR(Byte1) (! IS_CMD_STAT_HDR(Byte1)) +#define IS_DATA_HDR(Byte1) (!IS_CMD_STAT_HDR(Byte1)) #define IOSP_GET_HDR_PORT(Byte1) ((__u8) ((Byte1) & IOSP_PORT_MASK)) -#define IOSP_GET_HDR_DATA_LEN(Byte1, Byte2) ((__u16) ( ((__u16)((Byte1) & 0x78)) << 5) | (Byte2)) +#define IOSP_GET_HDR_DATA_LEN(Byte1, Byte2) ((__u16) (((__u16)((Byte1) & 0x78)) << 5) | (Byte2)) #define IOSP_GET_STATUS_CODE(Byte1) ((__u8) (((Byte1) & 0x78) >> 3)) // // These macros build the 1st and 2nd bytes for a data header // -#define IOSP_BUILD_DATA_HDR1(Port, Len) ((__u8) (((Port) | ((__u8) (((__u16) (Len)) >> 5) & 0x78 )))) +#define IOSP_BUILD_DATA_HDR1(Port, Len) ((__u8) (((Port) | ((__u8) (((__u16) (Len)) >> 5) & 0x78)))) #define IOSP_BUILD_DATA_HDR2(Port, Len) ((__u8) (Len)) // // These macros build the 1st and 2nd bytes for a command header // -#define IOSP_BUILD_CMD_HDR1(Port, Cmd) ((__u8) ( IOSP_CMD_STAT_BIT | (Port) | ((__u8) ((Cmd) << 3)) )) +#define IOSP_BUILD_CMD_HDR1(Port, Cmd) ((__u8) (IOSP_CMD_STAT_BIT | (Port) | ((__u8) ((Cmd) << 3)))) //-------------------------------------------------------------- @@ -194,24 +194,25 @@ struct int_status_pkt { // Define macros to simplify building of IOSP cmds // -#define MAKE_CMD_WRITE_REG(ppBuf, pLen, Port, Reg, Val) \ - do { \ - (*(ppBuf))[0] = IOSP_BUILD_CMD_HDR1( (Port), IOSP_WRITE_UART_REG(Reg) ); \ - (*(ppBuf))[1] = (Val); \ - \ - *ppBuf += 2; \ - *pLen += 2; \ - } while (0) +#define MAKE_CMD_WRITE_REG(ppBuf, pLen, Port, Reg, Val) \ +do { \ + (*(ppBuf))[0] = IOSP_BUILD_CMD_HDR1((Port), \ + IOSP_WRITE_UART_REG(Reg)); \ + (*(ppBuf))[1] = (Val); \ + \ + *ppBuf += 2; \ + *pLen += 2; \ +} while (0) -#define MAKE_CMD_EXT_CMD(ppBuf, pLen, Port, ExtCmd, Param) \ - do { \ - (*(ppBuf))[0] = IOSP_BUILD_CMD_HDR1( (Port), IOSP_EXT_CMD ); \ - (*(ppBuf))[1] = (ExtCmd); \ - (*(ppBuf))[2] = (Param); \ - \ - *ppBuf += 3; \ - *pLen += 3; \ - } while (0) +#define MAKE_CMD_EXT_CMD(ppBuf, pLen, Port, ExtCmd, Param) \ +do { \ + (*(ppBuf))[0] = IOSP_BUILD_CMD_HDR1((Port), IOSP_EXT_CMD); \ + (*(ppBuf))[1] = (ExtCmd); \ + (*(ppBuf))[2] = (Param); \ + \ + *ppBuf += 3; \ + *pLen += 3; \ +} while (0) @@ -310,16 +311,16 @@ struct int_status_pkt { // // IOSP_CMD_RX_CHECK_REQ // -// This command is used to assist in the implementation of the -// IOCTL_SERIAL_PURGE Windows IOCTL. -// This IOSP command tries to place a marker at the end of the RX -// queue in the Edgeport. If the Edgeport RX queue is full then -// the Check will be discarded. -// It is up to the device driver to timeout waiting for the -// RX_CHECK_RSP. If a RX_CHECK_RSP is received, the driver is -// sure that all data has been received from the edgeport and +// This command is used to assist in the implementation of the +// IOCTL_SERIAL_PURGE Windows IOCTL. +// This IOSP command tries to place a marker at the end of the RX +// queue in the Edgeport. If the Edgeport RX queue is full then +// the Check will be discarded. +// It is up to the device driver to timeout waiting for the +// RX_CHECK_RSP. If a RX_CHECK_RSP is received, the driver is +// sure that all data has been received from the edgeport and // may now purge any internal RX buffers. -// Note tat the sequence numbers may be used to detect lost +// Note tat the sequence numbers may be used to detect lost // CHECK_REQs. // Example for Port 0 @@ -341,7 +342,7 @@ struct int_status_pkt { // // 1ssssPPP P1P1P1P1 [ P2P2P2P2P2 ]... // -// ssss: 00-07 2-byte status. ssss identifies which UART register +// ssss: 00-07 2-byte status. ssss identifies which UART register // has changed value, and the new value is in P1. // Note that the ssss values do not correspond to the // 16554 register numbers given in 16554.H. Instead, @@ -383,14 +384,14 @@ struct int_status_pkt { // returns this in order to report // changes in modem status lines // (CTS, DSR, RI, CD) -// +// // 0x02 // Available for future expansion -// 0x03 // -// 0x04 // -// 0x05 // -// 0x06 // -// 0x07 // +// 0x03 // +// 0x04 // +// 0x05 // +// 0x06 // +// 0x07 // /**************************************************** @@ -400,7 +401,7 @@ struct int_status_pkt { #define IOSP_STATUS_LSR_DATA 0x08 // P1 is new value of LSR register (same as STATUS_LSR) // P2 is errored character read from -// RxFIFO after LSR reported an error. +// RxFIFO after LSR reported an error. #define IOSP_EXT_STATUS 0x09 // P1 is status/response code, param in P2. @@ -408,7 +409,7 @@ struct int_status_pkt { // Response Codes (P1 values) for 3-byte status messages #define IOSP_EXT_STATUS_CHASE_RSP 0 // Reply to CHASE_PORT cmd. P2 is outcome: -#define IOSP_EXT_STATUS_CHASE_PASS 0 // P2 = 0: All Tx data drained successfully +#define IOSP_EXT_STATUS_CHASE_PASS 0 // P2 = 0: All Tx data drained successfully #define IOSP_EXT_STATUS_CHASE_FAIL 1 // P2 = 1: Timed out (stuck due to flow // control from remote device). @@ -446,9 +447,9 @@ struct int_status_pkt { // Macros to parse status messages // -#define IOSP_GET_STATUS_LEN(code) ( (code) < 8 ? 2 : ((code) < 0x0A ? 3 : 4) ) +#define IOSP_GET_STATUS_LEN(code) ((code) < 8 ? 2 : ((code) < 0x0A ? 3 : 4)) -#define IOSP_STATUS_IS_2BYTE(code) ( (code) < 0x08 ) -#define IOSP_STATUS_IS_3BYTE(code) ( ((code) >= 0x08) && ((code) <= 0x0B) ) -#define IOSP_STATUS_IS_4BYTE(code) ( ((code) >= 0x0C) && ((code) <= 0x0D) ) +#define IOSP_STATUS_IS_2BYTE(code) ((code) < 0x08) +#define IOSP_STATUS_IS_3BYTE(code) (((code) >= 0x08) && ((code) <= 0x0B)) +#define IOSP_STATUS_IS_4BYTE(code) (((code) >= 0x0C) && ((code) <= 0x0D)) diff --git a/drivers/usb/serial/io_ti.h b/drivers/usb/serial/io_ti.h index cab84f2256b9..1bd67b24f916 100644 --- a/drivers/usb/serial/io_ti.h +++ b/drivers/usb/serial/io_ti.h @@ -1,4 +1,4 @@ -/***************************************************************************** +/***************************************************************************** * * Copyright (C) 1997-2002 Inside Out Networks, Inc. * @@ -22,10 +22,10 @@ #define DTK_ADDR_SPACE_I2C_TYPE_II 0x82 /* Addr is placed in I2C area */ #define DTK_ADDR_SPACE_I2C_TYPE_III 0x83 /* Addr is placed in I2C area */ -// UART Defines -#define UMPMEM_BASE_UART1 0xFFA0 /* UMP UART1 base address */ -#define UMPMEM_BASE_UART2 0xFFB0 /* UMP UART2 base address */ -#define UMPMEM_OFFS_UART_LSR 0x05 /* UMP UART LSR register offset */ +/* UART Defines */ +#define UMPMEM_BASE_UART1 0xFFA0 /* UMP UART1 base address */ +#define UMPMEM_BASE_UART2 0xFFB0 /* UMP UART2 base address */ +#define UMPMEM_OFFS_UART_LSR 0x05 /* UMP UART LSR register offset */ /* Bits per character */ #define UMP_UART_CHAR5BITS 0x00 @@ -54,7 +54,7 @@ #define UMP_UART_LSR_RX_MASK 0x10 #define UMP_UART_LSR_TX_MASK 0x20 -#define UMP_UART_LSR_DATA_MASK ( LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK ) +#define UMP_UART_LSR_DATA_MASK (LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK) /* Port Settings Constants) */ #define UMP_MASK_UART_FLAGS_RTS_FLOW 0x0001 @@ -79,50 +79,57 @@ #define UMP_PORT_DIR_OUT 0x01 #define UMP_PORT_DIR_IN 0x02 -// Address of Port 0 -#define UMPM_UART1_PORT 0x03 - -// Commands -#define UMPC_SET_CONFIG 0x05 -#define UMPC_OPEN_PORT 0x06 -#define UMPC_CLOSE_PORT 0x07 -#define UMPC_START_PORT 0x08 -#define UMPC_STOP_PORT 0x09 -#define UMPC_TEST_PORT 0x0A -#define UMPC_PURGE_PORT 0x0B - -#define UMPC_COMPLETE_READ 0x80 // Force the Firmware to complete the current Read -#define UMPC_HARDWARE_RESET 0x81 // Force UMP back into BOOT Mode -#define UMPC_COPY_DNLD_TO_I2C 0x82 // Copy current download image to type 0xf2 record in 16k I2C - // firmware will change 0xff record to type 2 record when complete +/* Address of Port 0 */ +#define UMPM_UART1_PORT 0x03 + +/* Commands */ +#define UMPC_SET_CONFIG 0x05 +#define UMPC_OPEN_PORT 0x06 +#define UMPC_CLOSE_PORT 0x07 +#define UMPC_START_PORT 0x08 +#define UMPC_STOP_PORT 0x09 +#define UMPC_TEST_PORT 0x0A +#define UMPC_PURGE_PORT 0x0B + +/* Force the Firmware to complete the current Read */ +#define UMPC_COMPLETE_READ 0x80 +/* Force UMP back into BOOT Mode */ +#define UMPC_HARDWARE_RESET 0x81 +/* + * Copy current download image to type 0xf2 record in 16k I2C + * firmware will change 0xff record to type 2 record when complete + */ +#define UMPC_COPY_DNLD_TO_I2C 0x82 - // Special function register commands - // wIndex is register address - // wValue is MSB/LSB mask/data -#define UMPC_WRITE_SFR 0x83 // Write SFR Register +/* + * Special function register commands + * wIndex is register address + * wValue is MSB/LSB mask/data + */ +#define UMPC_WRITE_SFR 0x83 /* Write SFR Register */ - // wIndex is register address -#define UMPC_READ_SFR 0x84 // Read SRF Register +/* wIndex is register address */ +#define UMPC_READ_SFR 0x84 /* Read SRF Register */ - // Set or Clear DTR (wValue bit 0 Set/Clear) wIndex ModuleID (port) +/* Set or Clear DTR (wValue bit 0 Set/Clear) wIndex ModuleID (port) */ #define UMPC_SET_CLR_DTR 0x85 - // Set or Clear RTS (wValue bit 0 Set/Clear) wIndex ModuleID (port) +/* Set or Clear RTS (wValue bit 0 Set/Clear) wIndex ModuleID (port) */ #define UMPC_SET_CLR_RTS 0x86 - // Set or Clear LOOPBACK (wValue bit 0 Set/Clear) wIndex ModuleID (port) +/* Set or Clear LOOPBACK (wValue bit 0 Set/Clear) wIndex ModuleID (port) */ #define UMPC_SET_CLR_LOOPBACK 0x87 - // Set or Clear BREAK (wValue bit 0 Set/Clear) wIndex ModuleID (port) +/* Set or Clear BREAK (wValue bit 0 Set/Clear) wIndex ModuleID (port) */ #define UMPC_SET_CLR_BREAK 0x88 - // Read MSR wIndex ModuleID (port) +/* Read MSR wIndex ModuleID (port) */ #define UMPC_READ_MSR 0x89 - /* Toolkit commands */ - /* Read-write group */ -#define UMPC_MEMORY_READ 0x92 -#define UMPC_MEMORY_WRITE 0x93 +/* Toolkit commands */ +/* Read-write group */ +#define UMPC_MEMORY_READ 0x92 +#define UMPC_MEMORY_WRITE 0x93 /* * UMP DMA Definitions @@ -130,8 +137,7 @@ #define UMPD_OEDB1_ADDRESS 0xFF08 #define UMPD_OEDB2_ADDRESS 0xFF10 -struct out_endpoint_desc_block -{ +struct out_endpoint_desc_block { __u8 Configuration; __u8 XBufAddr; __u8 XByteCount; @@ -147,8 +153,8 @@ struct out_endpoint_desc_block * TYPE DEFINITIONS * Structures for Firmware commands */ -struct ump_uart_config /* UART settings */ -{ +/* UART settings */ +struct ump_uart_config { __u16 wBaudRate; /* Baud rate */ __u16 wFlags; /* Bitmap mask of flags */ __u8 bDataBits; /* 5..8 - data bits per character */ @@ -165,8 +171,8 @@ struct ump_uart_config /* UART settings */ * TYPE DEFINITIONS * Structures for USB interrupts */ -struct ump_interrupt /* Interrupt packet structure */ -{ +/* Interrupt packet structure */ +struct ump_interrupt { __u8 bICode; /* Interrupt code (interrupt num) */ __u8 bIInfo; /* Interrupt information */ } __attribute__((packed)); diff --git a/drivers/usb/serial/io_usbvend.h b/drivers/usb/serial/io_usbvend.h index 8e1a491e52a9..51f83fbb73bb 100644 --- a/drivers/usb/serial/io_usbvend.h +++ b/drivers/usb/serial/io_usbvend.h @@ -26,7 +26,7 @@ // // Definitions of USB product IDs -// +// #define USB_VENDOR_ID_ION 0x1608 // Our VID #define USB_VENDOR_ID_TI 0x0451 // TI VID @@ -54,7 +54,7 @@ // Product IDs - assigned to match middle digit of serial number (No longer true) #define ION_DEVICE_ID_80251_NETCHIP 0x020 // This bit is set in the PID if this edgeport hardware$ - // is based on the 80251+Netchip. + // is based on the 80251+Netchip. #define ION_DEVICE_ID_GENERATION_1 0x00 // Value for 930 based edgeports #define ION_DEVICE_ID_GENERATION_2 0x01 // Value for 80251+Netchip. @@ -134,7 +134,7 @@ #define ION_DEVICE_ID_TI_EDGEPORT_416 0x0212 // Edgeport/416 #define ION_DEVICE_ID_TI_EDGEPORT_1 0x0215 // Edgeport/1 RS232 #define ION_DEVICE_ID_TI_EDGEPORT_42 0x0217 // Edgeport/42 4 hub 2 RS232 -#define ION_DEVICE_ID_TI_EDGEPORT_22I 0x021A // Edgeport/22I is an Edgeport/4 with ports 1&2 RS422 and ports 3&4 RS232 +#define ION_DEVICE_ID_TI_EDGEPORT_22I 0x021A // Edgeport/22I is an Edgeport/4 with ports 1&2 RS422 and ports 3&4 RS232 #define ION_DEVICE_ID_TI_EDGEPORT_2C 0x021B // Edgeport/2c RS232 #define ION_DEVICE_ID_TI_EDGEPORT_221C 0x021C // Edgeport/221c is a TI based Edgeport/2 with lucent chip and // 2 external hub ports - Large I2C @@ -142,7 +142,7 @@ // 2 external hub ports - Large I2C #define ION_DEVICE_ID_TI_EDGEPORT_21C 0x021E // Edgeport/21c is a TI based Edgeport/2 with lucent chip -// Generation 3 devices -- 3410 based edgport/1 (256 byte I2C) +// Generation 3 devices -- 3410 based edgport/1 (256 byte I2C) #define ION_DEVICE_ID_TI_TI3410_EDGEPORT_1 0x0240 // Edgeport/1 RS232 #define ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I 0x0241 // Edgeport/1i- RS422 model @@ -176,7 +176,7 @@ // Default to /P function #define ION_DEVICE_ID_PLUS_PWR_HP4CD 0x30C // 5052 Plus Power HubPort/4CD+ (for Dell) -#define ION_DEVICE_ID_PLUS_PWR_HP4C 0x30D // 5052 Plus Power HubPort/4C+ +#define ION_DEVICE_ID_PLUS_PWR_HP4C 0x30D // 5052 Plus Power HubPort/4C+ #define ION_DEVICE_ID_PLUS_PWR_PCI 0x30E // 3410 Plus Power PCI Host Controller 4 port @@ -217,17 +217,17 @@ #define ION_DEVICE_ID_MT4X56USB 0x1403 // OEM device -#define GENERATION_ID_FROM_USB_PRODUCT_ID( ProductId ) \ - ( (__u16) ((ProductId >> 8) & (ION_GENERATION_MASK)) ) +#define GENERATION_ID_FROM_USB_PRODUCT_ID(ProductId) \ + ((__u16) ((ProductId >> 8) & (ION_GENERATION_MASK))) -#define MAKE_USB_PRODUCT_ID( OemId, DeviceId ) \ - ( (__u16) (((OemId) << 10) || (DeviceId)) ) +#define MAKE_USB_PRODUCT_ID(OemId, DeviceId) \ + ((__u16) (((OemId) << 10) || (DeviceId))) -#define DEVICE_ID_FROM_USB_PRODUCT_ID( ProductId ) \ - ( (__u16) ((ProductId) & (EDGEPORT_DEVICE_ID_MASK)) ) +#define DEVICE_ID_FROM_USB_PRODUCT_ID(ProductId) \ + ((__u16) ((ProductId) & (EDGEPORT_DEVICE_ID_MASK))) -#define OEM_ID_FROM_USB_PRODUCT_ID( ProductId ) \ - ( (__u16) (((ProductId) >> 10) & 0x3F) ) +#define OEM_ID_FROM_USB_PRODUCT_ID(ProductId) \ + ((__u16) (((ProductId) >> 10) & 0x3F)) // // Definitions of parameters for download code. Note that these are @@ -237,7 +237,7 @@ // TxCredits value below which driver won't bother sending (to prevent too many small writes). // Send only if above 25% -#define EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(InitialCredit, MaxPacketSize) (max( ((InitialCredit) / 4), (MaxPacketSize) )) +#define EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(InitialCredit, MaxPacketSize) (max(((InitialCredit) / 4), (MaxPacketSize))) #define EDGE_FW_BULK_MAX_PACKET_SIZE 64 // Max Packet Size for Bulk In Endpoint (EP1) #define EDGE_FW_BULK_READ_BUFFER_SIZE 1024 // Size to use for Bulk reads @@ -263,7 +263,7 @@ // wValue = 16-bit address // wIndex = unused (though we could put segment 00: or FF: here) // wLength = # bytes to read/write (max 64) -// +// #define USB_REQUEST_ION_RESET_DEVICE 0 // Warm reboot Edgeport, retaining USB address #define USB_REQUEST_ION_GET_EPIC_DESC 1 // Get Edgeport Compatibility Descriptor @@ -278,7 +278,7 @@ #define USB_REQUEST_ION_ENABLE_SUSPEND 9 // Enable/Disable suspend feature // (wValue != 0: Enable; wValue = 0: Disable) -#define USB_REQUEST_ION_SEND_IOSP 10 // Send an IOSP command to the edgeport over the control pipe +#define USB_REQUEST_ION_SEND_IOSP 10 // Send an IOSP command to the edgeport over the control pipe #define USB_REQUEST_ION_RECV_IOSP 11 // Receive an IOSP command from the edgeport over the control pipe @@ -301,8 +301,7 @@ // this is a "real" Edgeport. // -struct edge_compatibility_bits -{ +struct edge_compatibility_bits { // This __u32 defines which Vendor-specific commands/functionality // the device supports on the default EP0 pipe. @@ -334,24 +333,22 @@ struct edge_compatibility_bits __u32 TrueEdgeport : 1; // 0001 Set if device is a 'real' Edgeport // (Used only by driver, NEVER set by an EPiC device) __u32 GenUnused : 31; // Available for future expansion, must be 0 - }; #define EDGE_COMPATIBILITY_MASK0 0x0001 #define EDGE_COMPATIBILITY_MASK1 0x3FFF #define EDGE_COMPATIBILITY_MASK2 0x0001 -struct edge_compatibility_descriptor -{ +struct edge_compatibility_descriptor { __u8 Length; // Descriptor Length (per USB spec) __u8 DescType; // Descriptor Type (per USB spec, =DEVICE type) __u8 EpicVer; // Version of EPiC spec supported - // (Currently must be 1) + // (Currently must be 1) __u8 NumPorts; // Number of serial ports supported __u8 iDownloadFile; // Index of string containing download code filename - // 0=no download, FF=download compiled into driver. - __u8 Unused[ 3 ]; // Available for future expansion, must be 0 - // (Currently must be 0). + // 0=no download, FF=download compiled into driver. + __u8 Unused[3]; // Available for future expansion, must be 0 + // (Currently must be 0). __u8 MajorVersion; // Firmware version: xx. __u8 MinorVersion; // yy. __le16 BuildNumber; // zzzz (LE format) @@ -359,9 +356,7 @@ struct edge_compatibility_descriptor // The following structure contains __u32s, with each bit // specifying whether the EPiC device supports the given // command or functionality. - struct edge_compatibility_bits Supports; - }; // Values for iDownloadFile @@ -391,8 +386,8 @@ struct edge_compatibility_descriptor // Define the max block size that may be read or written // in a read/write RAM/ROM command. -#define MAX_SIZE_REQ_ION_READ_MEM ( (__u16) 64 ) -#define MAX_SIZE_REQ_ION_WRITE_MEM ( (__u16) 64 ) +#define MAX_SIZE_REQ_ION_READ_MEM ((__u16)64) +#define MAX_SIZE_REQ_ION_WRITE_MEM ((__u16)64) // @@ -545,7 +540,7 @@ struct edge_boot_descriptor { __u8 MajorVersion; // C6 Firmware version: xx. __u8 MinorVersion; // C7 yy. __le16 BuildNumber; // C8 zzzz (LE format) - + __u16 EnumRootDescTable; // CA Root of ROM-based descriptor table __u8 NumDescTypes; // CC Number of supported descriptor types @@ -597,41 +592,36 @@ struct edge_boot_descriptor { #define I2C_DESC_TYPE_ION 0 // Not defined by TI -struct ti_i2c_desc -{ +struct ti_i2c_desc { __u8 Type; // Type of descriptor __u16 Size; // Size of data only not including header __u8 CheckSum; // Checksum (8 bit sum of data only) __u8 Data[0]; // Data starts here -}__attribute__((packed)); +} __attribute__((packed)); // for 5152 devices only (type 2 record) // for 3410 the version is stored in the WATCHPORT_FIRMWARE_VERSION descriptor -struct ti_i2c_firmware_rec -{ +struct ti_i2c_firmware_rec { __u8 Ver_Major; // Firmware Major version number __u8 Ver_Minor; // Firmware Minor version number __u8 Data[0]; // Download starts here -}__attribute__((packed)); +} __attribute__((packed)); -struct watchport_firmware_version -{ +struct watchport_firmware_version { // Added 2 bytes for version number __u8 Version_Major; // Download Version (for Watchport) __u8 Version_Minor; -}__attribute__((packed)); +} __attribute__((packed)); // Structure of header of download image in fw_down.h -struct ti_i2c_image_header -{ +struct ti_i2c_image_header { __le16 Length; __u8 CheckSum; -}__attribute__((packed)); +} __attribute__((packed)); -struct ti_basic_descriptor -{ +struct ti_basic_descriptor { __u8 Power; // Self powered // bit 7: 1 - power switching supported // 0 - power switching not supported @@ -663,9 +653,9 @@ struct ti_basic_descriptor #define TI_I2C_SIZE_MASK 0x1f // 5 bits #define TI_GET_I2C_SIZE(x) ((((x) & TI_I2C_SIZE_MASK)+1)*256) -#define TI_MAX_I2C_SIZE ( 16 * 1024 ) +#define TI_MAX_I2C_SIZE (16 * 1024) -#define TI_MANUF_VERSION_0 0 +#define TI_MANUF_VERSION_0 0 // IonConig2 flags #define TI_CONFIG2_RS232 0x01 @@ -676,8 +666,7 @@ struct ti_basic_descriptor #define TI_CONFIG2_WATCHPORT 0x10 -struct edge_ti_manuf_descriptor -{ +struct edge_ti_manuf_descriptor { __u8 IonConfig; // Config byte for ION manufacturing use __u8 IonConfig2; // Expansion __u8 Version; // Version @@ -688,7 +677,7 @@ struct edge_ti_manuf_descriptor __u8 HubConfig2; // Used to configure the Hub __u8 TotalPorts; // Total Number of Com Ports for the entire device (All UMPs) __u8 Reserved; // Reserved -}__attribute__((packed)); +} __attribute__((packed)); #endif // if !defined(_USBVEND_H) -- cgit v1.2.3-58-ga151 From 932d22c95504979d0ad927ed9a4cd02dd6af7071 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: kl5kusb105.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kl5kusb105.h | 47 ++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 24 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/kl5kusb105.h b/drivers/usb/serial/kl5kusb105.h index 1231d9e78398..22a90badc86b 100644 --- a/drivers/usb/serial/kl5kusb105.h +++ b/drivers/usb/serial/kl5kusb105.h @@ -17,16 +17,16 @@ /* baud rates */ enum { - kl5kusb105a_sio_b115200 = 0, - kl5kusb105a_sio_b57600 = 1, - kl5kusb105a_sio_b38400 = 2, - kl5kusb105a_sio_b19200 = 4, - kl5kusb105a_sio_b14400 = 5, - kl5kusb105a_sio_b9600 = 6, - kl5kusb105a_sio_b4800 = 8, /* unchecked */ - kl5kusb105a_sio_b2400 = 9, /* unchecked */ - kl5kusb105a_sio_b1200 = 0xa, /* unchecked */ - kl5kusb105a_sio_b600 = 0xb /* unchecked */ + kl5kusb105a_sio_b115200 = 0, + kl5kusb105a_sio_b57600 = 1, + kl5kusb105a_sio_b38400 = 2, + kl5kusb105a_sio_b19200 = 4, + kl5kusb105a_sio_b14400 = 5, + kl5kusb105a_sio_b9600 = 6, + kl5kusb105a_sio_b4800 = 8, /* unchecked */ + kl5kusb105a_sio_b2400 = 9, /* unchecked */ + kl5kusb105a_sio_b1200 = 0xa, /* unchecked */ + kl5kusb105a_sio_b600 = 0xb /* unchecked */ }; /* data bits */ @@ -53,17 +53,16 @@ enum { #define KL5KUSB105A_CTS ((1<<5) | (1<<4)) #define KL5KUSB105A_WANTS_TO_SEND 0x30 -//#define KL5KUSB105A_DTR /* Data Terminal Ready */ -//#define KL5KUSB105A_CTS /* Clear To Send */ -//#define KL5KUSB105A_CD /* Carrier Detect */ -//#define KL5KUSB105A_DSR /* Data Set Ready */ -//#define KL5KUSB105A_RxD /* Receive pin */ - -//#define KL5KUSB105A_LE -//#define KL5KUSB105A_RTS -//#define KL5KUSB105A_ST -//#define KL5KUSB105A_SR -//#define KL5KUSB105A_RI /* Ring Indicator */ - -/* vim: set ts=8 sts=8: */ - +#if 0 +#define KL5KUSB105A_DTR /* Data Terminal Ready */ +#define KL5KUSB105A_CTS /* Clear To Send */ +#define KL5KUSB105A_CD /* Carrier Detect */ +#define KL5KUSB105A_DSR /* Data Set Ready */ +#define KL5KUSB105A_RxD /* Receive pin */ + +#define KL5KUSB105A_LE +#define KL5KUSB105A_RTS +#define KL5KUSB105A_ST +#define KL5KUSB105A_SR +#define KL5KUSB105A_RI /* Ring Indicator */ +#endif -- cgit v1.2.3-58-ga151 From e4582b6a4c8e5549f2e8ffe176f08c8b1fd6beff Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: kobil_sct.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kobil_sct.h | 75 ++++++++++++++++++++++++++---------------- 1 file changed, 46 insertions(+), 29 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/kobil_sct.h b/drivers/usb/serial/kobil_sct.h index a51fbb5ae45c..be207f7156fe 100644 --- a/drivers/usb/serial/kobil_sct.h +++ b/drivers/usb/serial/kobil_sct.h @@ -23,38 +23,55 @@ #define SUSBCR_SSL_SETDTR 0x0004 #define SUSBCR_SSL_CLRDTR 0x0010 -#define SUSBCR_SSL_PURGE_TXABORT 0x0100 // Kill the pending/current writes to the comm port. -#define SUSBCR_SSL_PURGE_RXABORT 0x0200 // Kill the pending/current reads to the comm port. -#define SUSBCR_SSL_PURGE_TXCLEAR 0x0400 // Kill the transmit queue if there. -#define SUSBCR_SSL_PURGE_RXCLEAR 0x0800 // Kill the typeahead buffer if there. +/* Kill the pending/current writes to the comm port. */ +#define SUSBCR_SSL_PURGE_TXABORT 0x0100 +/* Kill the pending/current reads to the comm port. */ +#define SUSBCR_SSL_PURGE_RXABORT 0x0200 +/* Kill the transmit queue if there. */ +#define SUSBCR_SSL_PURGE_TXCLEAR 0x0400 +/* Kill the typeahead buffer if there. */ +#define SUSBCR_SSL_PURGE_RXCLEAR 0x0800 #define SUSBCRequest_GetStatusLineState 4 -#define SUSBCR_GSL_RXCHAR 0x0001 // Any Character received -#define SUSBCR_GSL_TXEMPTY 0x0004 // Transmitt Queue Empty -#define SUSBCR_GSL_CTS 0x0008 // CTS changed state -#define SUSBCR_GSL_DSR 0x0010 // DSR changed state -#define SUSBCR_GSL_RLSD 0x0020 // RLSD changed state -#define SUSBCR_GSL_BREAK 0x0040 // BREAK received -#define SUSBCR_GSL_ERR 0x0080 // Line status error occurred -#define SUSBCR_GSL_RING 0x0100 // Ring signal detected +/* Any Character received */ +#define SUSBCR_GSL_RXCHAR 0x0001 +/* Transmitt Queue Empty */ +#define SUSBCR_GSL_TXEMPTY 0x0004 +/* CTS changed state */ +#define SUSBCR_GSL_CTS 0x0008 +/* DSR changed state */ +#define SUSBCR_GSL_DSR 0x0010 +/* RLSD changed state */ +#define SUSBCR_GSL_RLSD 0x0020 +/* BREAK received */ +#define SUSBCR_GSL_BREAK 0x0040 +/* Line status error occurred */ +#define SUSBCR_GSL_ERR 0x0080 +/* Ring signal detected */ +#define SUSBCR_GSL_RING 0x0100 #define SUSBCRequest_Misc 8 -#define SUSBCR_MSC_ResetReader 0x0001 // use a predefined reset sequence -#define SUSBCR_MSC_ResetAllQueues 0x0002 // use a predefined sequence to reset the internal queues +/* use a predefined reset sequence */ +#define SUSBCR_MSC_ResetReader 0x0001 +/* use a predefined sequence to reset the internal queues */ +#define SUSBCR_MSC_ResetAllQueues 0x0002 #define SUSBCRequest_GetMisc 0x10 -#define SUSBCR_MSC_GetFWVersion 0x0001 /* get the firmware version from device, - coded like this 0xHHLLBBPP - with HH = Firmware Version High Byte - LL = Firmware Version Low Byte - BB = Build Number - PP = Further Attributes - */ - -#define SUSBCR_MSC_GetHWVersion 0x0002 /* get the hardware version from device - coded like this 0xHHLLPPRR - with HH = Software Version High Byte - LL = Software Version Low Byte - PP = Further Attributes - RR = Reserved for the hardware ID - */ + +/* + * get the firmware version from device, coded like this 0xHHLLBBPP with + * HH = Firmware Version High Byte + * LL = Firmware Version Low Byte + * BB = Build Number + * PP = Further Attributes + */ +#define SUSBCR_MSC_GetFWVersion 0x0001 + +/* + * get the hardware version from device coded like this 0xHHLLPPRR with + * HH = Software Version High Byte + * LL = Software Version Low Byte + * PP = Further Attributes + * RR = Reserved for the hardware ID + */ +#define SUSBCR_MSC_GetHWVersion 0x0002 -- cgit v1.2.3-58-ga151 From 5d78fcb0caf219e2e6c8e486d7e31fec1333ac06 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: pl2303.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 23c09b38b9ec..a871645389dd 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -5,7 +5,7 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. - * + * */ #define BENQ_VENDOR_ID 0x04a5 @@ -137,5 +137,5 @@ #define SANWA_PRODUCT_ID 0x0001 /* ADLINK ND-6530 RS232,RS485 and RS422 adapter */ -#define ADLINK_VENDOR_ID 0x0b63 -#define ADLINK_ND6530_PRODUCT_ID 0x6530 +#define ADLINK_VENDOR_ID 0x0b63 +#define ADLINK_ND6530_PRODUCT_ID 0x6530 -- cgit v1.2.3-58-ga151 From aa84dfc4296b8dd296da9a4d9e19ec1e6f7ddb94 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 10:33:41 -0700 Subject: USB: visor.h: checkpatch cleanups Minor whitespace cleanups to make checkpatch happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/visor.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/visor.h b/drivers/usb/serial/visor.h index 57229cf66477..88db4d06aefb 100644 --- a/drivers/usb/serial/visor.h +++ b/drivers/usb/serial/visor.h @@ -9,8 +9,9 @@ * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * - * See Documentation/usb/usb-serial.txt for more information on using this driver - * + * See Documentation/usb/usb-serial.txt for more information on using this + * driver. + * */ #ifndef __LINUX_USB_SERIAL_VISOR_H @@ -65,7 +66,7 @@ #define ACEECA_MEZ1000_ID 0x0001 #define KYOCERA_VENDOR_ID 0x0C88 -#define KYOCERA_7135_ID 0x0021 +#define KYOCERA_7135_ID 0x0021 #define FOSSIL_VENDOR_ID 0x0E67 #define FOSSIL_ABACUS_ID 0x0002 @@ -145,7 +146,7 @@ struct visor_connection_info { * The maximum number of connections currently supported is 2 */ struct palm_ext_connection_info { - __u8 num_ports; + __u8 num_ports; __u8 endpoint_numbers_different; __le16 reserved1; struct { -- cgit v1.2.3-58-ga151 From c024b7260c8f879a2ef3a3e6a853b579a46479f8 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Mon, 17 May 2010 22:20:50 +0800 Subject: USB: remove match_device usb_find_device was the only one user of match_device, now it is removed, so remove match_device to fix the compile warning below reported by Stephen Rothwell: drivers/usb/core/usb.c:596: warning: 'match_device' defined but not used Reported-by: Stephen Rothwell Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/usb.c | 33 --------------------------------- 1 file changed, 33 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 902f821d8d14..397b678f1c47 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -593,39 +593,6 @@ int usb_lock_device_for_reset(struct usb_device *udev, } EXPORT_SYMBOL_GPL(usb_lock_device_for_reset); -static struct usb_device *match_device(struct usb_device *dev, - u16 vendor_id, u16 product_id) -{ - struct usb_device *ret_dev = NULL; - int child; - - dev_dbg(&dev->dev, "check for vendor %04x, product %04x ...\n", - le16_to_cpu(dev->descriptor.idVendor), - le16_to_cpu(dev->descriptor.idProduct)); - - /* see if this device matches */ - if ((vendor_id == le16_to_cpu(dev->descriptor.idVendor)) && - (product_id == le16_to_cpu(dev->descriptor.idProduct))) { - dev_dbg(&dev->dev, "matched this device!\n"); - ret_dev = usb_get_dev(dev); - goto exit; - } - - /* look through all of the children of this device */ - for (child = 0; child < dev->maxchild; ++child) { - if (dev->children[child]) { - usb_lock_device(dev->children[child]); - ret_dev = match_device(dev->children[child], - vendor_id, product_id); - usb_unlock_device(dev->children[child]); - if (ret_dev) - goto exit; - } - } -exit: - return ret_dev; -} - /** * usb_get_current_frame_number - return current bus frame number * @dev: the device whose bus is being queried -- cgit v1.2.3-58-ga151 From c3443a6dbab1545265354d02a7edf95c84b0affd Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 17 May 2010 11:00:29 -0700 Subject: USB: xhci: fix compiler warning. Reported-by: Stephen Rothwell Cc: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index eabd95544823..36c858e5b529 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1743,7 +1743,6 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, if (enqueue_is_link_trb(ep_ring)) { struct xhci_ring *ring = ep_ring; union xhci_trb *next; - unsigned long long addr; xhci_dbg(xhci, "prepare_ring: pointing to link trb\n"); next = ring->enqueue; -- cgit v1.2.3-58-ga151 From 86234d4975ce084d14711283a3bfc69305f97602 Mon Sep 17 00:00:00 2001 From: Nils Radtke Date: Mon, 17 May 2010 14:14:11 +0200 Subject: USB: option.c: OLIVETTI OLICARD100 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds support for an olivetti olicard100 HЅDPA usb-stick. This device is a zeroCD one with ID 0b3c:c700 that needs switching via eject or usb-modeswitch with MessageContent="5553424312345678000000000000061b000000030000000000000000000000". After switching it has ID 0b3c:c000 and provides 5 serial ports ttyUSB[0-4]. Port 0 (modem) and 4 are interrupt ports. Signed-off-by: Nils Radtke Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 030f65a27fc0..e280ad8e12f7 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -359,6 +359,10 @@ static void option_instat_callback(struct urb *urb); #define CINTERION_VENDOR_ID 0x0681 +/* Olivetti products */ +#define OLIVETTI_VENDOR_ID 0x0b3c +#define OLIVETTI_PRODUCT_OLICARD100 0xc000 + /* some devices interfaces need special handling due to a number of reasons */ enum option_blacklist_reason { OPTION_BLACKLIST_NONE = 0, @@ -879,6 +883,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(PIRELLI_VENDOR_ID, PIRELLI_PRODUCT_1012)}, { USB_DEVICE(CINTERION_VENDOR_ID, 0x0047) }, + + { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD100) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); -- cgit v1.2.3-58-ga151 From c0f631d1948658b27349545b2cbcb4b32f010c7a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:43 +0200 Subject: USB: kobil: fix memory leak An urb transfer buffer is allocated at every open but was never freed. This driver is a bit of a mess... Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kobil_sct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index c113a2a0e10c..bd5bd8589e04 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -345,7 +345,8 @@ static void kobil_close(struct usb_serial_port *port) /* FIXME: Add rts/dtr methods */ if (port->write_urb) { - usb_kill_urb(port->write_urb); + usb_poison_urb(port->write_urb); + kfree(port->write_urb->transfer_buffer); usb_free_urb(port->write_urb); port->write_urb = NULL; } -- cgit v1.2.3-58-ga151 From 56a1df46c19150db0a9b0f0c14e0b1d42e7f32d4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:44 +0200 Subject: USB: serial: add special case for processing of empty read urbs Return immediately from generic process_read_urb if urb is empty. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index fcd30b841559..a817ced82835 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -324,6 +324,9 @@ void usb_serial_generic_process_read_urb(struct urb *urb) char *ch = (char *)urb->transfer_buffer; int i; + if (!urb->actual_length) + return; + tty = tty_port_tty_get(&port->port); if (!tty) return; -- cgit v1.2.3-58-ga151 From 695aaae684e249f9f0e7f1ed4caafa0687dbfa5b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:45 +0200 Subject: USB: empeg: reimplement using generic framework Kill custom read and write implementations (static 16*4k write-urb pool shared among all ports in system). Also remove old changelog entries in header (code is now gone, and these entries can still be retrieved through git). Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/empeg.c | 401 ++------------------------------------------- 1 file changed, 13 insertions(+), 388 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index 5f740a1eacab..504b5585ea45 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -13,44 +13,6 @@ * * See Documentation/usb/usb-serial.txt for more information on using this * driver - * - * (07/16/2001) gb - * remove unused code in empeg_close() (thanks to Oliver Neukum for - * pointing this out) and rewrote empeg_set_termios(). - * - * (05/30/2001) gkh - * switched from using spinlock to a semaphore, which fixes lots of - * problems. - * - * (04/08/2001) gb - * Identify version on module load. - * - * (01/22/2001) gb - * Added write_room() and chars_in_buffer() support. - * - * (12/21/2000) gb - * Moved termio stuff inside the port->active check. - * Moved MOD_DEC_USE_COUNT to end of empeg_close(). - * - * (12/03/2000) gb - * Added tty->ldisc.set_termios(port, tty, NULL) to empeg_open(). - * This notifies the tty driver that the termios have changed. - * - * (11/13/2000) gb - * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to - * empeg_open() (It only needs to be set once - Doh!) - * - * (11/11/2000) gb - * Updated to work with id_table structure. - * - * (11/04/2000) gb - * Forked this from visor.c, and hacked it up to work with an - * Empeg ltd. empeg-car player. Constructive criticism welcomed. - * I would like to say, 'Thank You' to Greg Kroah-Hartman for the - * use of his code, and for his guidance, advice and patience. :) - * A 'Thank You' is in order for John Ripley of Empeg ltd for his - * advice, and patience too. - * */ #include @@ -71,7 +33,7 @@ static int debug; /* * Version Information */ -#define DRIVER_VERSION "v1.2" +#define DRIVER_VERSION "v1.3" #define DRIVER_AUTHOR "Greg Kroah-Hartman , Gary Brubaker " #define DRIVER_DESC "USB Empeg Mark I/II Driver" @@ -79,19 +41,8 @@ static int debug; #define EMPEG_PRODUCT_ID 0x0001 /* function prototypes for an empeg-car player */ -static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port); -static void empeg_close(struct usb_serial_port *port); -static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, - int count); -static int empeg_write_room(struct tty_struct *tty); -static int empeg_chars_in_buffer(struct tty_struct *tty); -static void empeg_throttle(struct tty_struct *tty); -static void empeg_unthrottle(struct tty_struct *tty); static int empeg_startup(struct usb_serial *serial); static void empeg_init_termios(struct tty_struct *tty); -static void empeg_write_bulk_callback(struct urb *urb); -static void empeg_read_bulk_callback(struct urb *urb); static const struct usb_device_id id_table[] = { { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, @@ -105,7 +56,7 @@ static struct usb_driver empeg_driver = { .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table, - .no_dynamic_id = 1, + .no_dynamic_id = 1, }; static struct usb_serial_driver empeg_device = { @@ -114,291 +65,16 @@ static struct usb_serial_driver empeg_device = { .name = "empeg", }, .id_table = id_table, - .usb_driver = &empeg_driver, + .usb_driver = &empeg_driver, .num_ports = 1, - .open = empeg_open, - .close = empeg_close, - .throttle = empeg_throttle, - .unthrottle = empeg_unthrottle, + .bulk_out_size = 256, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, .attach = empeg_startup, .init_termios = empeg_init_termios, - .write = empeg_write, - .write_room = empeg_write_room, - .chars_in_buffer = empeg_chars_in_buffer, - .write_bulk_callback = empeg_write_bulk_callback, - .read_bulk_callback = empeg_read_bulk_callback, }; -#define NUM_URBS 16 -#define URB_TRANSFER_BUFFER_SIZE 4096 - -static struct urb *write_urb_pool[NUM_URBS]; -static spinlock_t write_urb_pool_lock; -static int bytes_in; -static int bytes_out; - -/****************************************************************************** - * Empeg specific driver functions - ******************************************************************************/ -static int empeg_open(struct tty_struct *tty,struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - int result = 0; - - dbg("%s - port %d", __func__, port->number); - - bytes_in = 0; - bytes_out = 0; - - /* Start reading from the device */ - usb_fill_bulk_urb( - port->read_urb, - serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - empeg_read_bulk_callback, - port); - - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - - if (result) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); - - return result; -} - - -static void empeg_close(struct usb_serial_port *port) -{ - dbg("%s - port %d", __func__, port->number); - - /* shutdown our bulk read */ - usb_kill_urb(port->read_urb); - /* Uncomment the following line if you want to see some statistics in your syslog */ - /* dev_info (&port->dev, "Bytes In = %d Bytes Out = %d\n", bytes_in, bytes_out); */ -} - - -static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct usb_serial *serial = port->serial; - struct urb *urb; - const unsigned char *current_position = buf; - unsigned long flags; - int status; - int i; - int bytes_sent = 0; - int transfer_size; - - dbg("%s - port %d", __func__, port->number); - - while (count > 0) { - /* try to find a free urb in our list of them */ - urb = NULL; - - spin_lock_irqsave(&write_urb_pool_lock, flags); - - for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status != -EINPROGRESS) { - urb = write_urb_pool[i]; - break; - } - } - - spin_unlock_irqrestore(&write_urb_pool_lock, flags); - - if (urb == NULL) { - dbg("%s - no more free urbs", __func__); - goto exit; - } - - if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); - if (urb->transfer_buffer == NULL) { - dev_err(&port->dev, - "%s no more kernel memory...\n", - __func__); - goto exit; - } - } - - transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); - - memcpy(urb->transfer_buffer, current_position, transfer_size); - - usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, urb->transfer_buffer); - - /* build up our urb */ - usb_fill_bulk_urb( - urb, - serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - urb->transfer_buffer, - transfer_size, - empeg_write_bulk_callback, - port); - - /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status); - bytes_sent = status; - break; - } - - current_position += transfer_size; - bytes_sent += transfer_size; - count -= transfer_size; - bytes_out += transfer_size; - - } -exit: - return bytes_sent; -} - - -static int empeg_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned long flags; - int i; - int room = 0; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&write_urb_pool_lock, flags); - /* tally up the number of bytes available */ - for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status != -EINPROGRESS) - room += URB_TRANSFER_BUFFER_SIZE; - } - spin_unlock_irqrestore(&write_urb_pool_lock, flags); - dbg("%s - returns %d", __func__, room); - return room; - -} - - -static int empeg_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned long flags; - int i; - int chars = 0; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&write_urb_pool_lock, flags); - - /* tally up the number of bytes waiting */ - for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status == -EINPROGRESS) - chars += URB_TRANSFER_BUFFER_SIZE; - } - - spin_unlock_irqrestore(&write_urb_pool_lock, flags); - dbg("%s - returns %d", __func__, chars); - return chars; -} - - -static void empeg_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - return; - } - - usb_serial_port_softint(port); -} - - -static void empeg_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; - } - - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - tty = tty_port_tty_get(&port->port); - - if (urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - bytes_in += urb->actual_length; - } - tty_kref_put(tty); - - /* Continue trying to always read */ - usb_fill_bulk_urb( - port->read_urb, - port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - empeg_read_bulk_callback, - port); - - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - - if (result) - dev_err(&urb->dev->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - - return; - -} - - -static void empeg_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - dbg("%s - port %d", __func__, port->number); - usb_kill_urb(port->read_urb); -} - - -static void empeg_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - int result; - dbg("%s - port %d", __func__, port->number); - - port->read_urb->dev = port->serial->dev; - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); -} - - -static int empeg_startup(struct usb_serial *serial) +static int empeg_startup(struct usb_serial *serial) { int r; @@ -414,10 +90,8 @@ static int empeg_startup(struct usb_serial *serial) /* continue on with initialization */ return r; - } - static void empeg_init_termios(struct tty_struct *tty) { struct ktermios *termios = tty->termios; @@ -462,77 +136,28 @@ static void empeg_init_termios(struct tty_struct *tty) tty_encode_baud_rate(tty, 115200, 115200); } - static int __init empeg_init(void) { - struct urb *urb; - int i, retval; - - /* create our write urb pool and transfer buffers */ - spin_lock_init(&write_urb_pool_lock); - for (i = 0; i < NUM_URBS; ++i) { - urb = usb_alloc_urb(0, GFP_KERNEL); - write_urb_pool[i] = urb; - if (urb == NULL) { - printk(KERN_ERR "empeg: No more urbs???\n"); - continue; - } - - urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, - GFP_KERNEL); - if (!urb->transfer_buffer) { - printk(KERN_ERR "empeg: %s - out of memory for urb " - "buffers.", __func__); - continue; - } - } + int retval; retval = usb_serial_register(&empeg_device); if (retval) - goto failed_usb_serial_register; + return retval; retval = usb_register(&empeg_driver); - if (retval) - goto failed_usb_register; - + if (retval) { + usb_serial_deregister(&empeg_device); + return retval; + } printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" DRIVER_DESC "\n"); return 0; -failed_usb_register: - usb_serial_deregister(&empeg_device); -failed_usb_serial_register: - for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]) { - kfree(write_urb_pool[i]->transfer_buffer); - usb_free_urb(write_urb_pool[i]); - } - } - return retval; } - static void __exit empeg_exit(void) { - int i; - unsigned long flags; - usb_deregister(&empeg_driver); usb_serial_deregister(&empeg_device); - - spin_lock_irqsave(&write_urb_pool_lock, flags); - - for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]) { - /* FIXME - uncomment the following usb_kill_urb call - * when the host controllers get fixed to set urb->dev - * = NULL after the urb is finished. Otherwise this - * call oopses. */ - /* usb_kill_urb(write_urb_pool[i]); */ - kfree(write_urb_pool[i]->transfer_buffer); - usb_free_urb(write_urb_pool[i]); - } - } - spin_unlock_irqrestore(&write_urb_pool_lock, flags); } -- cgit v1.2.3-58-ga151 From 6b6962f9c489ecfa43ae27eb798c46717e203322 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:46 +0200 Subject: USB: ipaq: reimplement using generic framework Kill custom fifo, read and write implementations (single-urb and fifo, but still maintained list of 256*256b urb buffers per port). Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ipaq.c | 333 ++-------------------------------------------- drivers/usb/serial/ipaq.h | 54 -------- 2 files changed, 10 insertions(+), 377 deletions(-) delete mode 100644 drivers/usb/serial/ipaq.h (limited to 'drivers') diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index 87b11461bf11..28913fa95fb7 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -56,7 +56,6 @@ #include #include #include -#include "ipaq.h" #define KP_RETRIES 100 @@ -64,7 +63,7 @@ * Version Information */ -#define DRIVER_VERSION "v0.5" +#define DRIVER_VERSION "v1.0" #define DRIVER_AUTHOR "Ganesh Varadarajan " #define DRIVER_DESC "USB PocketPC PDA driver" @@ -76,20 +75,8 @@ static int initial_wait; /* Function prototypes for an ipaq */ static int ipaq_open(struct tty_struct *tty, struct usb_serial_port *port); -static void ipaq_close(struct usb_serial_port *port); static int ipaq_calc_num_ports(struct usb_serial *serial); static int ipaq_startup(struct usb_serial *serial); -static int ipaq_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static int ipaq_write_bulk(struct usb_serial_port *port, - const unsigned char *buf, int count); -static void ipaq_write_gather(struct usb_serial_port *port); -static void ipaq_read_bulk_callback(struct urb *urb); -static void ipaq_write_bulk_callback(struct urb *urb); -static int ipaq_write_room(struct tty_struct *tty); -static int ipaq_chars_in_buffer(struct tty_struct *tty); -static void ipaq_destroy_lists(struct usb_serial_port *port); - static struct usb_device_id ipaq_id_table [] = { /* The first entry is a placeholder for the insmod-specified device */ @@ -558,7 +545,7 @@ static struct usb_driver ipaq_driver = { .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = ipaq_id_table, - .no_dynamic_id = 1, + .no_dynamic_id = 1, }; @@ -569,67 +556,24 @@ static struct usb_serial_driver ipaq_device = { .name = "ipaq", }, .description = "PocketPC PDA", - .usb_driver = &ipaq_driver, + .usb_driver = &ipaq_driver, .id_table = ipaq_id_table, - .bulk_in_size = URBDATA_SIZE, - .bulk_out_size = URBDATA_SIZE, + .bulk_in_size = 256, + .bulk_out_size = 256, .open = ipaq_open, - .close = ipaq_close, .attach = ipaq_startup, .calc_num_ports = ipaq_calc_num_ports, - .write = ipaq_write, - .write_room = ipaq_write_room, - .chars_in_buffer = ipaq_chars_in_buffer, - .read_bulk_callback = ipaq_read_bulk_callback, - .write_bulk_callback = ipaq_write_bulk_callback, }; -static spinlock_t write_list_lock; -static int bytes_in; -static int bytes_out; - static int ipaq_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - struct ipaq_private *priv; - struct ipaq_packet *pkt; - int i, result = 0; + int result = 0; int retries = connect_retries; dbg("%s - port %d", __func__, port->number); - bytes_in = 0; - bytes_out = 0; - priv = kmalloc(sizeof(struct ipaq_private), GFP_KERNEL); - if (priv == NULL) { - dev_err(&port->dev, "%s - Out of memory\n", __func__); - return -ENOMEM; - } - usb_set_serial_port_data(port, priv); - priv->active = 0; - priv->queue_len = 0; - priv->free_len = 0; - INIT_LIST_HEAD(&priv->queue); - INIT_LIST_HEAD(&priv->freelist); - - for (i = 0; i < URBDATA_QUEUE_MAX / PACKET_SIZE; i++) { - pkt = kmalloc(sizeof(struct ipaq_packet), GFP_KERNEL); - if (pkt == NULL) - goto enomem; - - pkt->data = kmalloc(PACKET_SIZE, GFP_KERNEL); - if (pkt->data == NULL) { - kfree(pkt); - goto enomem; - } - pkt->len = 0; - pkt->written = 0; - INIT_LIST_HEAD(&pkt->list); - list_add(&pkt->list, &priv->freelist); - priv->free_len += PACKET_SIZE; - } - msleep(1000*initial_wait); /* @@ -639,7 +583,6 @@ static int ipaq_open(struct tty_struct *tty, * through. Since this has a reasonably high failure rate, we retry * several times. */ - while (retries--) { result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21, @@ -649,269 +592,15 @@ static int ipaq_open(struct tty_struct *tty, msleep(1000); } - if (!retries && result) { - dev_err(&port->dev, "%s - failed doing control urb, error %d\n", __func__, result); - goto error; - } - - /* Start reading from the device */ - usb_fill_bulk_urb(port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ipaq_read_bulk_callback, port); - - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) { - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); - goto error; - } - - return 0; - -enomem: - result = -ENOMEM; - dev_err(&port->dev, "%s - Out of memory\n", __func__); -error: - ipaq_destroy_lists(port); - kfree(priv); - return result; -} - - -static void ipaq_close(struct usb_serial_port *port) -{ - struct ipaq_private *priv = usb_get_serial_port_data(port); - - dbg("%s - port %d", __func__, port->number); - - /* - * shut down bulk read and write - */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); - ipaq_destroy_lists(port); - kfree(priv); - usb_set_serial_port_data(port, NULL); - - /* Uncomment the following line if you want to see some statistics - * in your syslog */ - /* info ("Bytes In = %d Bytes Out = %d", bytes_in, bytes_out); */ -} - -static void ipaq_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; + dev_err(&port->dev, "%s - failed doing control urb, error %d\n", + __func__, result); + return result; } - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - tty = tty_port_tty_get(&port->port); - if (tty && urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - bytes_in += urb->actual_length; - } - tty_kref_put(tty); - - /* Continue trying to always read */ - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ipaq_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - return; + return usb_serial_generic_open(tty, port); } -static int ipaq_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - const unsigned char *current_position = buf; - int bytes_sent = 0; - int transfer_size; - - dbg("%s - port %d", __func__, port->number); - - while (count > 0) { - transfer_size = min(count, PACKET_SIZE); - if (ipaq_write_bulk(port, current_position, transfer_size)) - break; - current_position += transfer_size; - bytes_sent += transfer_size; - count -= transfer_size; - bytes_out += transfer_size; - } - - return bytes_sent; -} - -static int ipaq_write_bulk(struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct ipaq_private *priv = usb_get_serial_port_data(port); - struct ipaq_packet *pkt = NULL; - int result = 0; - unsigned long flags; - - if (priv->free_len <= 0) { - dbg("%s - we're stuffed", __func__); - return -EAGAIN; - } - - spin_lock_irqsave(&write_list_lock, flags); - if (!list_empty(&priv->freelist)) { - pkt = list_entry(priv->freelist.next, struct ipaq_packet, list); - list_del(&pkt->list); - priv->free_len -= PACKET_SIZE; - } - spin_unlock_irqrestore(&write_list_lock, flags); - if (pkt == NULL) { - dbg("%s - we're stuffed", __func__); - return -EAGAIN; - } - - memcpy(pkt->data, buf, count); - usb_serial_debug_data(debug, &port->dev, __func__, count, pkt->data); - - pkt->len = count; - pkt->written = 0; - spin_lock_irqsave(&write_list_lock, flags); - list_add_tail(&pkt->list, &priv->queue); - priv->queue_len += count; - if (priv->active == 0) { - priv->active = 1; - ipaq_write_gather(port); - spin_unlock_irqrestore(&write_list_lock, flags); - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - } else { - spin_unlock_irqrestore(&write_list_lock, flags); - } - return result; -} - -static void ipaq_write_gather(struct usb_serial_port *port) -{ - struct ipaq_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - int count, room; - struct ipaq_packet *pkt, *tmp; - struct urb *urb = port->write_urb; - - room = URBDATA_SIZE; - list_for_each_entry_safe(pkt, tmp, &priv->queue, list) { - count = min(room, (int)(pkt->len - pkt->written)); - memcpy(urb->transfer_buffer + (URBDATA_SIZE - room), - pkt->data + pkt->written, count); - room -= count; - pkt->written += count; - priv->queue_len -= count; - if (pkt->written == pkt->len) { - list_move(&pkt->list, &priv->freelist); - priv->free_len += PACKET_SIZE; - } - if (room == 0) - break; - } - - count = URBDATA_SIZE - room; - usb_fill_bulk_urb(port->write_urb, serial->dev, - usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, count, - ipaq_write_bulk_callback, port); - return; -} - -static void ipaq_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct ipaq_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - return; - } - - spin_lock_irqsave(&write_list_lock, flags); - if (!list_empty(&priv->queue)) { - ipaq_write_gather(port); - spin_unlock_irqrestore(&write_list_lock, flags); - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - } else { - priv->active = 0; - spin_unlock_irqrestore(&write_list_lock, flags); - } - - usb_serial_port_softint(port); -} - -static int ipaq_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct ipaq_private *priv = usb_get_serial_port_data(port); - - dbg("%s - freelen %d", __func__, priv->free_len); - return priv->free_len; -} - -static int ipaq_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct ipaq_private *priv = usb_get_serial_port_data(port); - - dbg("%s - queuelen %d", __func__, priv->queue_len); - return priv->queue_len; -} - -static void ipaq_destroy_lists(struct usb_serial_port *port) -{ - struct ipaq_private *priv = usb_get_serial_port_data(port); - struct ipaq_packet *pkt, *tmp; - - list_for_each_entry_safe(pkt, tmp, &priv->queue, list) { - kfree(pkt->data); - kfree(pkt); - } - list_for_each_entry_safe(pkt, tmp, &priv->freelist, list) { - kfree(pkt->data); - kfree(pkt); - } -} - - static int ipaq_calc_num_ports(struct usb_serial *serial) { /* @@ -970,7 +659,6 @@ static int ipaq_startup(struct usb_serial *serial) static int __init ipaq_init(void) { int retval; - spin_lock_init(&write_list_lock); retval = usb_serial_register(&ipaq_device); if (retval) goto failed_usb_serial_register; @@ -991,7 +679,6 @@ failed_usb_serial_register: return retval; } - static void __exit ipaq_exit(void) { usb_deregister(&ipaq_driver); diff --git a/drivers/usb/serial/ipaq.h b/drivers/usb/serial/ipaq.h deleted file mode 100644 index 2b9035918b85..000000000000 --- a/drivers/usb/serial/ipaq.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * USB Compaq iPAQ driver - * - * Copyright (C) 2001 - 2002 - * Ganesh Varadarajan - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - */ - -#ifndef __LINUX_USB_SERIAL_IPAQ_H -#define __LINUX_USB_SERIAL_IPAQ_H - -/* - * Since we can't queue our bulk write urbs (don't know why - it just - * doesn't work), we can send down only one write urb at a time. The simplistic - * approach taken by the generic usbserial driver will work, but it's not good - * for performance. Therefore, we buffer upto URBDATA_QUEUE_MAX bytes of write - * requests coming from the line discipline. This is done by chaining them - * in lists of struct ipaq_packet, each packet holding a maximum of - * PACKET_SIZE bytes. - * - * ipaq_write() can be called from bottom half context; hence we can't - * allocate memory for packets there. So we initialize a pool of packets at - * the first open and maintain a freelist. - * - * The value of PACKET_SIZE was empirically determined by - * checking the maximum write sizes sent down by the ppp ldisc. - * URBDATA_QUEUE_MAX is set to 64K, which is the maximum TCP window size. - */ - -struct ipaq_packet { - char *data; - size_t len; - size_t written; - struct list_head list; -}; - -struct ipaq_private { - int active; - int queue_len; - int free_len; - struct list_head queue; - struct list_head freelist; -}; - -#define URBDATA_SIZE 4096 -#define URBDATA_QUEUE_MAX (64 * 1024) -#define PACKET_SIZE 256 - -#endif -- cgit v1.2.3-58-ga151 From fa993ca8641ba650c762ea6701b0333118430d8c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:47 +0200 Subject: USB: spcp8x5: reimplement using generic framework Kill custom fifo, read, and single-urb write implementations. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/spcp8x5.c | 407 +++---------------------------------------- 1 file changed, 29 insertions(+), 378 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 2ea32c561d02..329d311a35d9 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -1,6 +1,7 @@ /* * spcp8x5 USB to serial adaptor driver * + * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn) * Copyright (C) 2006 S1 Corp. * @@ -29,7 +30,7 @@ /* Version Information */ -#define DRIVER_VERSION "v0.04" +#define DRIVER_VERSION "v0.10" #define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver" static int debug; @@ -64,11 +65,6 @@ struct spcp8x5_usb_ctrl_arg { u16 length; }; -/* wait 30s before close */ -#define SPCP8x5_CLOSING_WAIT (30*HZ) - -#define SPCP8x5_BUF_SIZE 1024 - /* spcp8x5 spec register define */ #define MCR_CONTROL_LINE_RTS 0x02 @@ -155,133 +151,6 @@ enum spcp8x5_type { SPCP835_TYPE, }; -/* 1st in 1st out buffer 4 driver */ -struct ringbuf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; - -/* alloc the ring buf and alloc the buffer itself */ -static inline struct ringbuf *alloc_ringbuf(unsigned int size) -{ - struct ringbuf *pb; - - if (size == 0) - return NULL; - - pb = kmalloc(sizeof(*pb), GFP_KERNEL); - if (pb == NULL) - return NULL; - - pb->buf_buf = kmalloc(size, GFP_KERNEL); - if (pb->buf_buf == NULL) { - kfree(pb); - return NULL; - } - - pb->buf_size = size; - pb->buf_get = pb->buf_put = pb->buf_buf; - - return pb; -} - -/* free the ring buf and the buffer itself */ -static inline void free_ringbuf(struct ringbuf *pb) -{ - if (pb != NULL) { - kfree(pb->buf_buf); - kfree(pb); - } -} - -/* clear pipo , juest repoint the pointer here */ -static inline void clear_ringbuf(struct ringbuf *pb) -{ - if (pb != NULL) - pb->buf_get = pb->buf_put; -} - -/* get the number of data in the pipo */ -static inline unsigned int ringbuf_avail_data(struct ringbuf *pb) -{ - if (pb == NULL) - return 0; - return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; -} - -/* get the number of space in the pipo */ -static inline unsigned int ringbuf_avail_space(struct ringbuf *pb) -{ - if (pb == NULL) - return 0; - return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; -} - -/* put count data into pipo */ -static unsigned int put_ringbuf(struct ringbuf *pb, const char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL) - return 0; - - len = ringbuf_avail_space(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_put; - if (count > len) { - memcpy(pb->buf_put, buf, len); - memcpy(pb->buf_buf, buf+len, count - len); - pb->buf_put = pb->buf_buf + count - len; - } else { - memcpy(pb->buf_put, buf, count); - if (count < len) - pb->buf_put += count; - else /* count == len */ - pb->buf_put = pb->buf_buf; - } - return count; -} - -/* get count data from pipo */ -static unsigned int get_ringbuf(struct ringbuf *pb, char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL || buf == NULL) - return 0; - - len = ringbuf_avail_data(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_get; - if (count > len) { - memcpy(buf, pb->buf_get, len); - memcpy(buf+len, pb->buf_buf, count - len); - pb->buf_get = pb->buf_buf + count - len; - } else { - memcpy(buf, pb->buf_get, count); - if (count < len) - pb->buf_get += count; - else /* count == len */ - pb->buf_get = pb->buf_buf; - } - - return count; -} - static struct usb_driver spcp8x5_driver = { .name = "spcp8x5", .probe = usb_serial_probe, @@ -293,8 +162,6 @@ static struct usb_driver spcp8x5_driver = { struct spcp8x5_private { spinlock_t lock; - struct ringbuf *buf; - int write_urb_in_use; enum spcp8x5_type type; wait_queue_head_t delta_msr_wait; u8 line_control; @@ -330,24 +197,15 @@ static int spcp8x5_startup(struct usb_serial *serial) goto cleanup; spin_lock_init(&priv->lock); - priv->buf = alloc_ringbuf(SPCP8x5_BUF_SIZE); - if (priv->buf == NULL) - goto cleanup2; - init_waitqueue_head(&priv->delta_msr_wait); priv->type = type; usb_set_serial_port_data(serial->port[i] , priv); - } return 0; - -cleanup2: - kfree(priv); cleanup: for (--i; i >= 0; --i) { priv = usb_get_serial_port_data(serial->port[i]); - free_ringbuf(priv->buf); kfree(priv); usb_set_serial_port_data(serial->port[i] , NULL); } @@ -358,15 +216,9 @@ cleanup: static void spcp8x5_release(struct usb_serial *serial) { int i; - struct spcp8x5_private *priv; - for (i = 0; i < serial->num_ports; i++) { - priv = usb_get_serial_port_data(serial->port[i]); - if (priv) { - free_ringbuf(priv->buf); - kfree(priv); - } - } + for (i = 0; i < serial->num_ports; i++) + kfree(usb_get_serial_port_data(serial->port[i])); } /* set the modem control line of the device. @@ -470,33 +322,6 @@ static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); } -/* close the serial port. We should wait for data sending to device 1st and - * then kill all urb. */ -static void spcp8x5_close(struct usb_serial_port *port) -{ - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - int result; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - /* clear out any remaining data in the buffer */ - clear_ringbuf(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); - - /* kill urb */ - if (port->write_urb != NULL) { - result = usb_unlink_urb(port->write_urb); - if (result) - dev_dbg(&port->dev, - "usb_unlink_urb(write_urb) = %d\n", result); - } - result = usb_unlink_urb(port->read_urb); - if (result) - dev_dbg(&port->dev, "usb_unlink_urb(read_urb) = %d\n", result); -} - static void spcp8x5_init_termios(struct tty_struct *tty) { /* for the 1st time call this function */ @@ -620,7 +445,7 @@ static void spcp8x5_set_termios(struct tty_struct *tty, } /* open the serial port. do some usb system call. set termios and get the line - * status of the device. then submit the read urb */ + * status of the device. */ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { struct ktermios tmp_termios; @@ -655,52 +480,21 @@ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) priv->line_status = status & 0xf0 ; spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - submitting read urb", __func__); - port->read_urb->dev = serial->dev; - ret = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (ret) { - spcp8x5_close(port); - return -EPROTO; - } port->port.drain_delay = 256; - return 0; + + return usb_serial_generic_open(tty, port); } -/* bulk read call back function. check the status of the urb. if transfer - * failed return. then update the status and the tty send data to tty subsys. - * submit urb again. - */ -static void spcp8x5_read_bulk_callback(struct urb *urb) +static void spcp8x5_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; struct spcp8x5_private *priv = usb_get_serial_port_data(port); struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; unsigned long flags; - int result = urb->status; u8 status; char tty_flag; - dev_dbg(&port->dev, "start, result = %d, urb->actual_length = %d\n,", - result, urb->actual_length); - - /* check the urb status */ - if (result) { - if (result == -EPROTO) { - /* spcp8x5 mysteriously fails with -EPROTO */ - /* reschedule the read */ - urb->dev = port->serial->dev; - result = usb_submit_urb(urb , GFP_ATOMIC); - if (result) - dev_dbg(&port->dev, - "failed submitting read urb %d\n", - result); - return; - } - dev_dbg(&port->dev, "unable to handle the error, exiting.\n"); - return; - } - /* get tty_flag from status */ tty_flag = TTY_NORMAL; @@ -711,141 +505,33 @@ static void spcp8x5_read_bulk_callback(struct urb *urb) /* wake up the wait for termios */ wake_up_interruptible(&priv->delta_msr_wait); - /* break takes precedence over parity, which takes precedence over - * framing errors */ - if (status & UART_BREAK_ERROR) - tty_flag = TTY_BREAK; - else if (status & UART_PARITY_ERROR) - tty_flag = TTY_PARITY; - else if (status & UART_FRAME_ERROR) - tty_flag = TTY_FRAME; - dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); - - tty = tty_port_tty_get(&port->port); - if (tty && urb->actual_length) { - /* overrun is special, not associated with a char */ - if (status & UART_OVERRUN_ERROR) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - tty_insert_flip_string_fixed_flag(tty, data, tty_flag, - urb->actual_length); - tty_flip_buffer_push(tty); - } - tty_kref_put(tty); - - /* Schedule the next read */ - urb->dev = port->serial->dev; - result = usb_submit_urb(urb , GFP_ATOMIC); - if (result) - dev_dbg(&port->dev, "failed submitting read urb %d\n", result); -} - -/* get data from ring buffer and then write to usb bus */ -static void spcp8x5_send(struct usb_serial_port *port) -{ - int count, result; - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - - spin_lock_irqsave(&priv->lock, flags); - - if (priv->write_urb_in_use) { - dev_dbg(&port->dev, "write urb still used\n"); - spin_unlock_irqrestore(&priv->lock, flags); + if (!urb->actual_length) return; - } - - /* send the 1st urb for writting */ - memset(port->write_urb->transfer_buffer , 0x00 , port->bulk_out_size); - count = get_ringbuf(priv->buf, port->write_urb->transfer_buffer, - port->bulk_out_size); - if (count == 0) { - spin_unlock_irqrestore(&priv->lock, flags); + tty = tty_port_tty_get(&port->port); + if (!tty) return; - } - - /* update the urb status */ - priv->write_urb_in_use = 1; - - spin_unlock_irqrestore(&priv->lock, flags); - - port->write_urb->transfer_buffer_length = count; - port->write_urb->dev = port->serial->dev; - - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) { - dev_dbg(&port->dev, "failed submitting write urb, error %d\n", - result); - priv->write_urb_in_use = 0; - /* TODO: reschedule spcp8x5_send */ - } - - - schedule_work(&port->work); -} -/* this is the call back function for write urb. NOTE we should not sleep in - * this routine. check the urb return code and then submit the write urb again - * to hold the write loop */ -static void spcp8x5_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - int result; - int status = urb->status; + if (status & UART_STATE_TRANSIENT_MASK) { + /* break takes precedence over parity, which takes precedence + * over framing errors */ + if (status & UART_BREAK_ERROR) + tty_flag = TTY_BREAK; + else if (status & UART_PARITY_ERROR) + tty_flag = TTY_PARITY; + else if (status & UART_FRAME_ERROR) + tty_flag = TTY_FRAME; + dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dev_dbg(&port->dev, "urb shutting down with status: %d\n", - status); - priv->write_urb_in_use = 0; - return; - default: - /* error in the urb, so we have to resubmit it */ - dbg("%s - Overflow in write", __func__); - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - port->write_urb->transfer_buffer_length = 1; - port->write_urb->dev = port->serial->dev; - result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - if (result) - dev_dbg(&port->dev, - "failed resubmitting write urb %d\n", result); - else - return; + /* overrun is special, not associated with a char */ + if (status & UART_OVERRUN_ERROR) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); } - priv->write_urb_in_use = 0; - - /* send any buffered data */ - spcp8x5_send(port); -} - -/* write data to ring buffer. and then start the write transfer */ -static int spcp8x5_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - - dev_dbg(&port->dev, "%d bytes\n", count); - - if (!count) - return count; - - spin_lock_irqsave(&priv->lock, flags); - count = put_ringbuf(priv->buf, buf, count); - spin_unlock_irqrestore(&priv->lock, flags); - - spcp8x5_send(port); - - return count; + tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + urb->actual_length); + tty_flip_buffer_push(tty); + tty_kref_put(tty); } static int spcp8x5_wait_modem_info(struct usb_serial_port *port, @@ -953,36 +639,6 @@ static int spcp8x5_tiocmget(struct tty_struct *tty, struct file *file) return result; } -/* get the avail space room in ring buffer */ -static int spcp8x5_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - int room = 0; - unsigned long flags; - - spin_lock_irqsave(&priv->lock, flags); - room = ringbuf_avail_space(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); - - return room; -} - -/* get the number of avail data in write ring buffer */ -static int spcp8x5_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct spcp8x5_private *priv = usb_get_serial_port_data(port); - int chars = 0; - unsigned long flags; - - spin_lock_irqsave(&priv->lock, flags); - chars = ringbuf_avail_data(priv->buf); - spin_unlock_irqrestore(&priv->lock, flags); - - return chars; -} - /* All of the device info needed for the spcp8x5 SIO serial converter */ static struct usb_serial_driver spcp8x5_device = { .driver = { @@ -992,21 +648,16 @@ static struct usb_serial_driver spcp8x5_device = { .id_table = id_table, .num_ports = 1, .open = spcp8x5_open, - .close = spcp8x5_close, .dtr_rts = spcp8x5_dtr_rts, .carrier_raised = spcp8x5_carrier_raised, - .write = spcp8x5_write, .set_termios = spcp8x5_set_termios, .init_termios = spcp8x5_init_termios, .ioctl = spcp8x5_ioctl, .tiocmget = spcp8x5_tiocmget, .tiocmset = spcp8x5_tiocmset, - .write_room = spcp8x5_write_room, - .read_bulk_callback = spcp8x5_read_bulk_callback, - .write_bulk_callback = spcp8x5_write_bulk_callback, - .chars_in_buffer = spcp8x5_chars_in_buffer, .attach = spcp8x5_startup, .release = spcp8x5_release, + .process_read_urb = spcp8x5_process_read_urb, }; static int __init spcp8x5_init(void) -- cgit v1.2.3-58-ga151 From 199b113978015309dd02c69844c19a1be3f4dbcf Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:48 +0200 Subject: USB: visor: fix memory leak Fix memory leak for some devices (Sony Clie 3.5) due to port private data not being freed on release. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/visor.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 094942707c7d..fb7fc4068fb6 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -249,6 +249,7 @@ static struct usb_serial_driver clie_3_5_device = { .throttle = visor_throttle, .unthrottle = visor_unthrottle, .attach = clie_3_5_startup, + .release = visor_release, .write = visor_write, .write_room = visor_write_room, .write_bulk_callback = visor_write_bulk_callback, -- cgit v1.2.3-58-ga151 From 214916f2ec6701e1c9972f26c60b3dc37d3153c6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:49 +0200 Subject: USB: visor: reimplement using generic framework Kill custom read and write implementations (dynamically allocated write urbs). Note that I chose to remove the stat module parameter which was supposed to keep count of the amount of data sent and received, but which has been broken for three years (since b308e74d9c708ee2a9af14fbe235e0a41216f4ed "USB: visor driver adapted to new tty buffering" -- bytes_in was incorrectly updated and was thus always reported as 0). Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/visor.c | 342 ++------------------------------------------- 1 file changed, 13 insertions(+), 329 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index fb7fc4068fb6..17fd8822d07f 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -38,17 +38,9 @@ /* function prototypes for a handspring visor */ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port); static void visor_close(struct usb_serial_port *port); -static int visor_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static int visor_write_room(struct tty_struct *tty); -static void visor_throttle(struct tty_struct *tty); -static void visor_unthrottle(struct tty_struct *tty); static int visor_probe(struct usb_serial *serial, const struct usb_device_id *id); static int visor_calc_num_ports(struct usb_serial *serial); -static void visor_release(struct usb_serial *serial); -static void visor_write_bulk_callback(struct urb *urb); -static void visor_read_bulk_callback(struct urb *urb); static void visor_read_int_callback(struct urb *urb); static int clie_3_5_startup(struct usb_serial *serial); static int treo_attach(struct usb_serial *serial); @@ -196,16 +188,11 @@ static struct usb_serial_driver handspring_device = { .num_ports = 2, .open = visor_open, .close = visor_close, - .throttle = visor_throttle, - .unthrottle = visor_unthrottle, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, .attach = treo_attach, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, - .release = visor_release, - .write = visor_write, - .write_room = visor_write_room, - .write_bulk_callback = visor_write_bulk_callback, - .read_bulk_callback = visor_read_bulk_callback, .read_int_callback = visor_read_int_callback, }; @@ -221,16 +208,11 @@ static struct usb_serial_driver clie_5_device = { .num_ports = 2, .open = visor_open, .close = visor_close, - .throttle = visor_throttle, - .unthrottle = visor_unthrottle, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, .attach = clie_5_attach, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, - .release = visor_release, - .write = visor_write, - .write_room = visor_write_room, - .write_bulk_callback = visor_write_bulk_callback, - .read_bulk_callback = visor_read_bulk_callback, .read_int_callback = visor_read_int_callback, }; @@ -246,38 +228,16 @@ static struct usb_serial_driver clie_3_5_device = { .num_ports = 1, .open = visor_open, .close = visor_close, - .throttle = visor_throttle, - .unthrottle = visor_unthrottle, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, .attach = clie_3_5_startup, - .release = visor_release, - .write = visor_write, - .write_room = visor_write_room, - .write_bulk_callback = visor_write_bulk_callback, - .read_bulk_callback = visor_read_bulk_callback, }; -struct visor_private { - spinlock_t lock; - int bytes_in; - int bytes_out; - int outstanding_urbs; - unsigned char throttled; - unsigned char actually_throttled; -}; - -/* number of outstanding urbs to prevent userspace DoS from happening */ -#define URB_UPPER_LIMIT 42 - -static int stats; - /****************************************************************************** * Handspring Visor specific driver functions ******************************************************************************/ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct usb_serial *serial = port->serial; - struct visor_private *priv = usb_get_serial_port_data(port); - unsigned long flags; int result = 0; dbg("%s - port %d", __func__, port->number); @@ -288,26 +248,10 @@ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port) return -ENODEV; } - spin_lock_irqsave(&priv->lock, flags); - priv->bytes_in = 0; - priv->bytes_out = 0; - priv->throttled = 0; - spin_unlock_irqrestore(&priv->lock, flags); - /* Start reading from the device */ - usb_fill_bulk_urb(port->read_urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - visor_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) { - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); + result = usb_serial_generic_open(tty, port); + if (result) goto exit; - } if (port->interrupt_in_urb) { dbg("%s - adding interrupt input for treo", __func__); @@ -324,13 +268,12 @@ exit: static void visor_close(struct usb_serial_port *port) { - struct visor_private *priv = usb_get_serial_port_data(port); unsigned char *transfer_buffer; dbg("%s - port %d", __func__, port->number); /* shutdown our urbs */ - usb_kill_urb(port->read_urb); + usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); mutex_lock(&port->serial->disc_mutex); @@ -347,192 +290,6 @@ static void visor_close(struct usb_serial_port *port) } } mutex_unlock(&port->serial->disc_mutex); - - if (stats) - dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n", - priv->bytes_in, priv->bytes_out); -} - - -static int visor_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct visor_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - struct urb *urb; - unsigned char *buffer; - unsigned long flags; - int status; - - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - if (priv->outstanding_urbs > URB_UPPER_LIMIT) { - spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit", __func__); - return 0; - } - priv->outstanding_urbs++; - spin_unlock_irqrestore(&priv->lock, flags); - - buffer = kmalloc(count, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "out of memory\n"); - count = -ENOMEM; - goto error_no_buffer; - } - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "no more free urbs\n"); - count = -ENOMEM; - goto error_no_urb; - } - - memcpy(buffer, buf, count); - - usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); - - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, count, - visor_write_bulk_callback, port); - - /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, - "%s - usb_submit_urb(write bulk) failed with status = %d\n", - __func__, status); - count = status; - goto error; - } else { - spin_lock_irqsave(&priv->lock, flags); - priv->bytes_out += count; - spin_unlock_irqrestore(&priv->lock, flags); - } - - /* we are done with this urb, so let the host driver - * really free it when it is finished with it */ - usb_free_urb(urb); - - return count; -error: - usb_free_urb(urb); -error_no_urb: - kfree(buffer); -error_no_buffer: - spin_lock_irqsave(&priv->lock, flags); - --priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - return count; -} - - -static int visor_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct visor_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - /* - * We really can take anything the user throws at us - * but let's pick a nice big number to tell the tty - * layer that we have lots of free space, unless we don't. - */ - - spin_lock_irqsave(&priv->lock, flags); - if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) { - spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit", __func__); - return 0; - } - spin_unlock_irqrestore(&priv->lock, flags); - - return 2048; -} - - -static void visor_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct visor_private *priv = usb_get_serial_port_data(port); - int status = urb->status; - unsigned long flags; - - /* free up the transfer buffer, as usb_free_urb() does not do this */ - kfree(urb->transfer_buffer); - - dbg("%s - port %d", __func__, port->number); - - if (status) - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - - spin_lock_irqsave(&priv->lock, flags); - --priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - - usb_serial_port_softint(port); -} - - -static void visor_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct visor_private *priv = usb_get_serial_port_data(port); - unsigned char *data = urb->transfer_buffer; - int status = urb->status; - struct tty_struct *tty; - int result; - int available_room = 0; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; - } - - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - if (urb->actual_length) { - tty = tty_port_tty_get(&port->port); - if (tty) { - tty_insert_flip_string(tty, data, - urb->actual_length); - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } - spin_lock(&priv->lock); - if (tty) - priv->bytes_in += available_room; - - } else { - spin_lock(&priv->lock); - } - - /* Continue trying to always read if we should */ - if (!priv->throttled) { - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - visor_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - } else - priv->actually_throttled = 1; - spin_unlock(&priv->lock); } static void visor_read_int_callback(struct urb *urb) @@ -576,41 +333,6 @@ exit: __func__, result); } -static void visor_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct visor_private *priv = usb_get_serial_port_data(port); - - dbg("%s - port %d", __func__, port->number); - spin_lock_irq(&priv->lock); - priv->throttled = 1; - spin_unlock_irq(&priv->lock); -} - - -static void visor_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct visor_private *priv = usb_get_serial_port_data(port); - int result, was_throttled; - - dbg("%s - port %d", __func__, port->number); - spin_lock_irq(&priv->lock); - priv->throttled = 0; - was_throttled = priv->actually_throttled; - priv->actually_throttled = 0; - spin_unlock_irq(&priv->lock); - - if (was_throttled) { - port->read_urb->dev = port->serial->dev; - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); - } -} - static int palm_os_3_probe(struct usb_serial *serial, const struct usb_device_id *id) { @@ -778,28 +500,6 @@ static int visor_calc_num_ports(struct usb_serial *serial) return num_ports; } -static int generic_startup(struct usb_serial *serial) -{ - struct usb_serial_port **ports = serial->port; - struct visor_private *priv; - int i; - - for (i = 0; i < serial->num_ports; ++i) { - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) { - while (i-- != 0) { - priv = usb_get_serial_port_data(ports[i]); - usb_set_serial_port_data(ports[i], NULL); - kfree(priv); - } - return -ENOMEM; - } - spin_lock_init(&priv->lock); - usb_set_serial_port_data(ports[i], priv); - } - return 0; -} - static int clie_3_5_startup(struct usb_serial *serial) { struct device *dev = &serial->dev->dev; @@ -850,7 +550,7 @@ static int clie_3_5_startup(struct usb_serial *serial) goto out; } - result = generic_startup(serial); + result = 0; out: kfree(data); @@ -868,7 +568,7 @@ static int treo_attach(struct usb_serial *serial) (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) || (serial->num_interrupt_in == 0)) - goto generic_startup; + return 0; dbg("%s", __func__); @@ -898,8 +598,7 @@ static int treo_attach(struct usb_serial *serial) COPY_PORT(serial->port[1], swap_port); kfree(swap_port); -generic_startup: - return generic_startup(serial); + return 0; } static int clie_5_attach(struct usb_serial *serial) @@ -922,20 +621,7 @@ static int clie_5_attach(struct usb_serial *serial) serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress; - return generic_startup(serial); -} - -static void visor_release(struct usb_serial *serial) -{ - struct visor_private *priv; - int i; - - dbg("%s", __func__); - - for (i = 0; i < serial->num_ports; i++) { - priv = usb_get_serial_port_data(serial->port[i]); - kfree(priv); - } + return 0; } static int __init visor_init(void) @@ -1019,8 +705,6 @@ MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug enabled or not"); -module_param(stats, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(stats, "Enables statistics or not"); module_param(vendor, ushort, 0); MODULE_PARM_DESC(vendor, "User specified vendor ID"); -- cgit v1.2.3-58-ga151 From a90131763dfd9a95f43071f0b67a737e6ca6a6c0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:50 +0200 Subject: USB: cp210x: use generic open to start reading from device Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 25e343ff61e7..ca27f2f8522d 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -379,7 +379,7 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) return -EPROTO; } - result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); + result = usb_serial_generic_open(tty, port); if (result) return result; -- cgit v1.2.3-58-ga151 From 726ef428af41b1fbdf569772ab73de0844c4e0f2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:51 +0200 Subject: USB: belkin_sa: minor clean-ups Remove some whitepace and comments. Clean up close. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/belkin_sa.c | 28 +++++++--------------------- 1 file changed, 7 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index bdab31afc37d..9dbb07ea76ec 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -112,7 +112,6 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) }, { } /* Terminating entry */ }; - MODULE_DEVICE_TABLE(usb, id_table_combined); static struct usb_driver belkin_driver = { @@ -120,7 +119,7 @@ static struct usb_driver belkin_driver = { .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table_combined, - .no_dynamic_id = 1, + .no_dynamic_id = 1, }; /* All of the device info needed for the serial converters */ @@ -145,7 +144,6 @@ static struct usb_serial_driver belkin_device = { .release = belkin_sa_release, }; - struct belkin_sa_private { spinlock_t lock; unsigned long control_state; @@ -196,23 +194,17 @@ static int belkin_sa_startup(struct usb_serial *serial) return 0; } - static void belkin_sa_release(struct usb_serial *serial) { - struct belkin_sa_private *priv; int i; dbg("%s", __func__); - for (i = 0; i < serial->num_ports; ++i) { - /* My special items, the standard routines free my urbs */ - priv = usb_get_serial_port_data(serial->port[i]); - kfree(priv); - } + for (i = 0; i < serial->num_ports; ++i) + kfree(usb_get_serial_port_data(serial->port[i])); } - -static int belkin_sa_open(struct tty_struct *tty, +static int belkin_sa_open(struct tty_struct *tty, struct usb_serial_port *port) { int retval = 0; @@ -239,8 +231,7 @@ static int belkin_sa_open(struct tty_struct *tty, exit: return retval; -} /* belkin_sa_open */ - +} static void belkin_sa_close(struct usb_serial_port *port) { @@ -248,8 +239,7 @@ static void belkin_sa_close(struct usb_serial_port *port) usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); -} /* belkin_sa_close */ - +} static void belkin_sa_read_int_callback(struct urb *urb) { @@ -480,8 +470,7 @@ static void belkin_sa_set_termios(struct tty_struct *tty, spin_lock_irqsave(&priv->lock, flags); priv->control_state = control_state; spin_unlock_irqrestore(&priv->lock, flags); -} /* belkin_sa_set_termios */ - +} static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state) { @@ -492,7 +481,6 @@ static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state) dev_err(&port->dev, "Set break_ctl %d\n", break_state); } - static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file) { struct usb_serial_port *port = tty->driver_data; @@ -509,7 +497,6 @@ static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file) return control_state; } - static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { @@ -581,7 +568,6 @@ failed_usb_serial_register: return retval; } - static void __exit belkin_sa_exit (void) { usb_deregister(&belkin_driver); -- cgit v1.2.3-58-ga151 From f2f8b7fe5a7542df8e3c906fcc9897b596bbf1fc Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:52 +0200 Subject: USB: belkin_sa: clean up open Use generic open to submit read urb. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/belkin_sa.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 9dbb07ea76ec..c39673608c35 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -207,29 +207,20 @@ static void belkin_sa_release(struct usb_serial *serial) static int belkin_sa_open(struct tty_struct *tty, struct usb_serial_port *port) { - int retval = 0; + int retval; dbg("%s port %d", __func__, port->number); - /*Start reading from the device*/ - /* TODO: Look at possibility of submitting multiple URBs to device to - * enhance buffering. Win trace shows 16 initial read URBs. - */ - port->read_urb->dev = port->serial->dev; - retval = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (retval) { - dev_err(&port->dev, "usb_submit_urb(read bulk) failed\n"); - goto exit; - } - - port->interrupt_in_urb->dev = port->serial->dev; retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (retval) { - usb_kill_urb(port->read_urb); dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); + return retval; } -exit: + retval = usb_serial_generic_open(tty, port); + if (retval) + usb_kill_urb(port->interrupt_in_urb); + return retval; } -- cgit v1.2.3-58-ga151 From 2afd8287c6e2ac6c1affb46d009cfd866dffed77 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sat, 15 May 2010 17:53:53 +0200 Subject: USB: belkin_sa: implement line status handling Use process_read_urb to implement line status handling. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/belkin_sa.c | 77 ++++++++++++++++++++++++++++-------------- 1 file changed, 51 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index c39673608c35..36df35295db2 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -3,6 +3,7 @@ * * Copyright (C) 2000 William Greathouse (wgreathouse@smva.com) * Copyright (C) 2000-2001 Greg Kroah-Hartman (greg@kroah.com) + * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) * * This program is largely derived from work by the linux-usb group * and associated source files. Please see the usb/serial files for @@ -84,7 +85,7 @@ static int debug; /* * Version Information */ -#define DRIVER_VERSION "v1.2" +#define DRIVER_VERSION "v1.3" #define DRIVER_AUTHOR "William Greathouse " #define DRIVER_DESC "USB Belkin Serial converter driver" @@ -95,6 +96,7 @@ static int belkin_sa_open(struct tty_struct *tty, struct usb_serial_port *port); static void belkin_sa_close(struct usb_serial_port *port); static void belkin_sa_read_int_callback(struct urb *urb); +static void belkin_sa_process_read_urb(struct urb *urb); static void belkin_sa_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old); static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state); @@ -135,7 +137,7 @@ static struct usb_serial_driver belkin_device = { .open = belkin_sa_open, .close = belkin_sa_close, .read_int_callback = belkin_sa_read_int_callback, - /* How we get the status info */ + .process_read_urb = belkin_sa_process_read_urb, .set_termios = belkin_sa_set_termios, .break_ctl = belkin_sa_break_ctl, .tiocmget = belkin_sa_tiocmget, @@ -289,31 +291,7 @@ static void belkin_sa_read_int_callback(struct urb *urb) else priv->control_state &= ~TIOCM_CD; - /* Now to report any errors */ priv->last_lsr = data[BELKIN_SA_LSR_INDEX]; -#if 0 - /* - * fill in the flip buffer here, but I do not know the relation - * to the current/next receive buffer or characters. I need - * to look in to this before committing any code. - */ - if (priv->last_lsr & BELKIN_SA_LSR_ERR) { - tty = tty_port_tty_get(&port->port); - /* Overrun Error */ - if (priv->last_lsr & BELKIN_SA_LSR_OE) { - } - /* Parity Error */ - if (priv->last_lsr & BELKIN_SA_LSR_PE) { - } - /* Framing Error */ - if (priv->last_lsr & BELKIN_SA_LSR_FE) { - } - /* Break Indicator */ - if (priv->last_lsr & BELKIN_SA_LSR_BI) { - } - tty_kref_put(tty); - } -#endif spin_unlock_irqrestore(&priv->lock, flags); exit: retval = usb_submit_urb(urb, GFP_ATOMIC); @@ -322,6 +300,53 @@ exit: "result %d\n", __func__, retval); } +static void belkin_sa_process_read_urb(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + struct belkin_sa_private *priv = usb_get_serial_port_data(port); + struct tty_struct *tty; + unsigned char *data = urb->transfer_buffer; + unsigned long flags; + unsigned char status; + char tty_flag; + + /* Update line status */ + tty_flag = TTY_NORMAL; + + spin_lock_irqsave(&priv->lock, flags); + status = priv->last_lsr; + priv->last_lsr &= ~BELKIN_SA_LSR_ERR; + spin_unlock_irqrestore(&priv->lock, flags); + + if (!urb->actual_length) + return; + + tty = tty_port_tty_get(&port->port); + if (!tty) + return; + + if (status & BELKIN_SA_LSR_ERR) { + /* Break takes precedence over parity, which takes precedence + * over framing errors. */ + if (status & BELKIN_SA_LSR_BI) + tty_flag = TTY_BREAK; + else if (status & BELKIN_SA_LSR_PE) + tty_flag = TTY_PARITY; + else if (status & BELKIN_SA_LSR_FE) + tty_flag = TTY_FRAME; + dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); + + /* Overrun is special, not associated with a char. */ + if (status & BELKIN_SA_LSR_OE) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } + + tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + urb->actual_length); + tty_flip_buffer_push(tty); + tty_kref_put(tty); +} + static void belkin_sa_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { -- cgit v1.2.3-58-ga151 From 9a1f298f8bc92f21b09bd7ef396c2fc6544ce9aa Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 15:06:55 +0200 Subject: USB: visor: increase bulk-out buffer size Increase the bulk-out buffer size to avoid any regression in throughput after replacing the old writing scheme which used dynamic buffers (e.g. up to 2k). 256b has been determined to be a good choice for several drivers including ftdi_sio which used to have a more or less identical write implementation. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/visor.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 17fd8822d07f..eb76aaef4268 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -186,6 +186,7 @@ static struct usb_serial_driver handspring_device = { .usb_driver = &visor_driver, .id_table = id_table, .num_ports = 2, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, @@ -206,6 +207,7 @@ static struct usb_serial_driver clie_5_device = { .usb_driver = &visor_driver, .id_table = clie_id_5_table, .num_ports = 2, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, @@ -226,6 +228,7 @@ static struct usb_serial_driver clie_3_5_device = { .usb_driver = &visor_driver, .id_table = clie_id_3_5_table, .num_ports = 1, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, -- cgit v1.2.3-58-ga151 From eefd9029fde4d90d59804eeb54880ab8db5c1866 Mon Sep 17 00:00:00 2001 From: Craig Shelley Date: Sat, 15 May 2010 13:36:38 +0100 Subject: USB: CP210x New Device IDs 11 New device IDs Signed-off-by: Craig Shelley Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index ca27f2f8522d..8b8c7976b4c0 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -59,6 +59,8 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ + { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ + { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ @@ -70,9 +72,12 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ + { USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */ + { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ + { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ @@ -80,12 +85,15 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */ { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ + { USB_DEVICE(0x10C4, 0x8149) }, /* West Mountain Radio Computerized Battery Analyzer */ { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ + { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */ { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */ { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ + { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */ { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ @@ -103,6 +111,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ + { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */ { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ @@ -113,6 +122,8 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ + { USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */ + { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */ { } /* Terminating Entry */ -- cgit v1.2.3-58-ga151 From 4b8e12336fede9e30b6140e840431161d46cf677 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 23:15:44 +0200 Subject: USB: gadget: Use kmemdup Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/atmel_usba_udc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 75a256f3d45b..d623c7bda1f6 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -48,10 +48,9 @@ static int queue_dbg_open(struct inode *inode, struct file *file) spin_lock_irq(&ep->udc->lock); list_for_each_entry(req, &ep->queue, queue) { - req_copy = kmalloc(sizeof(*req_copy), GFP_ATOMIC); + req_copy = kmemdup(req, sizeof(*req_copy), GFP_ATOMIC); if (!req_copy) goto fail; - memcpy(req_copy, req, sizeof(*req_copy)); list_add_tail(&req_copy->queue, queue_data); } spin_unlock_irq(&ep->udc->lock); -- cgit v1.2.3-58-ga151 From 7288d7550056c17d26c09a21f1a5c3764f2f882a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 20:33:48 +0200 Subject: USB: usb_debug: set bulk out size at probe Use bulk_out_size in usb_serial_driver to set urb buffer size. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb_debug.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index aa2702b76291..f2ed6a31be77 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -43,12 +43,6 @@ static struct usb_driver debug_driver = { .no_dynamic_id = 1, }; -static int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port) -{ - port->bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE; - return usb_serial_generic_open(tty, port); -} - /* This HW really does not support a serial break, so one will be * emulated when ever the break state is set to true. */ @@ -82,7 +76,7 @@ static struct usb_serial_driver debug_device = { }, .id_table = id_table, .num_ports = 1, - .open = usb_debug_open, + .bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE, .break_ctl = usb_debug_break_ctl, .read_bulk_callback = usb_debug_read_bulk_callback, }; -- cgit v1.2.3-58-ga151 From c4f4736fc4518b92d7071016c4e28fe4f4e13e82 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 20:33:49 +0200 Subject: USB: cypress_m8: remove unused drain define Driver uses tty-port drain these days. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cypress_m8.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 582e832dca72..d96374865289 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -85,7 +85,6 @@ static int unstable_bauds; /* write buffer size defines */ #define CYPRESS_BUF_SIZE 1024 -#define CYPRESS_CLOSING_WAIT (30*HZ) static const struct usb_device_id id_table_earthmate[] = { { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) }, -- cgit v1.2.3-58-ga151 From 117fb8d086cfc6e51c729fe5533bb83cb55c150a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 20:33:50 +0200 Subject: USB: cypress_m8: use kfifo to implement write buffering Kill custom fifo implementation. Note that cypress_m8 has no port write fifo as it has no bulk-out endpoint. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cypress_m8.c | 239 +++------------------------------------- 1 file changed, 17 insertions(+), 222 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index d96374865289..f5d06746cc3b 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -64,6 +64,7 @@ #include #include #include +#include #include #include #include @@ -79,7 +80,7 @@ static int unstable_bauds; /* * Version Information */ -#define DRIVER_VERSION "v1.09" +#define DRIVER_VERSION "v1.10" #define DRIVER_AUTHOR "Lonnie Mendez , Neil Whelchel " #define DRIVER_DESC "Cypress USB to Serial Driver" @@ -134,7 +135,7 @@ struct cypress_private { int bytes_out; /* used for statistics */ int cmd_count; /* used for statistics */ int cmd_ctrl; /* always set this to 1 before issuing a command */ - struct cypress_buf *buf; /* write buffer */ + struct kfifo write_fifo; /* write fifo */ int write_urb_in_use; /* write urb in use indicator */ int write_urb_interval; /* interval to use for write urb */ int read_urb_interval; /* interval to use for read urb */ @@ -156,14 +157,6 @@ struct cypress_private { struct ktermios tmp_termios; /* stores the old termios settings */ }; -/* write buffer structure */ -struct cypress_buf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; - /* function prototypes for the Cypress USB to serial device */ static int cypress_earthmate_startup(struct usb_serial *serial); static int cypress_hidcom_startup(struct usb_serial *serial); @@ -189,17 +182,6 @@ static void cypress_unthrottle(struct tty_struct *tty); static void cypress_set_dead(struct usb_serial_port *port); static void cypress_read_int_callback(struct urb *urb); static void cypress_write_int_callback(struct urb *urb); -/* write buffer functions */ -static struct cypress_buf *cypress_buf_alloc(unsigned int size); -static void cypress_buf_free(struct cypress_buf *cb); -static void cypress_buf_clear(struct cypress_buf *cb); -static unsigned int cypress_buf_data_avail(struct cypress_buf *cb); -static unsigned int cypress_buf_space_avail(struct cypress_buf *cb); -static unsigned int cypress_buf_put(struct cypress_buf *cb, - const char *buf, unsigned int count); -static unsigned int cypress_buf_get(struct cypress_buf *cb, - char *buf, unsigned int count); - static struct usb_serial_driver cypress_earthmate_device = { .driver = { @@ -502,8 +484,7 @@ static int generic_startup(struct usb_serial *serial) priv->comm_is_ok = !0; spin_lock_init(&priv->lock); - priv->buf = cypress_buf_alloc(CYPRESS_BUF_SIZE); - if (priv->buf == NULL) { + if (kfifo_alloc(&priv->write_fifo, CYPRESS_BUF_SIZE, GFP_KERNEL)) { kfree(priv); return -ENOMEM; } @@ -626,7 +607,7 @@ static void cypress_release(struct usb_serial *serial) priv = usb_get_serial_port_data(serial->port[0]); if (priv) { - cypress_buf_free(priv->buf); + kfifo_free(&priv->write_fifo); kfree(priv); } } @@ -703,6 +684,7 @@ static void cypress_dtr_rts(struct usb_serial_port *port, int on) static void cypress_close(struct usb_serial_port *port) { struct cypress_private *priv = usb_get_serial_port_data(port); + unsigned long flags; dbg("%s - port %d", __func__, port->number); @@ -712,12 +694,14 @@ static void cypress_close(struct usb_serial_port *port) mutex_unlock(&port->serial->disc_mutex); return; } - cypress_buf_clear(priv->buf); + spin_lock_irqsave(&priv->lock, flags); + kfifo_reset_out(&priv->write_fifo); + spin_unlock_irqrestore(&priv->lock, flags); + dbg("%s - stopping urbs", __func__); usb_kill_urb(port->interrupt_in_urb); usb_kill_urb(port->interrupt_out_urb); - if (stats) dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n", priv->bytes_in, priv->bytes_out, priv->cmd_count); @@ -729,7 +713,6 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { struct cypress_private *priv = usb_get_serial_port_data(port); - unsigned long flags; dbg("%s - port %d, %d bytes", __func__, port->number, count); @@ -744,9 +727,7 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, if (!count) return count; - spin_lock_irqsave(&priv->lock, flags); - count = cypress_buf_put(priv->buf, buf, count); - spin_unlock_irqrestore(&priv->lock, flags); + count = kfifo_in_locked(&priv->write_fifo, buf, count, &priv->lock); finish: cypress_send(port); @@ -806,9 +787,10 @@ static void cypress_send(struct usb_serial_port *port) } else spin_unlock_irqrestore(&priv->lock, flags); - count = cypress_buf_get(priv->buf, &port->interrupt_out_buffer[offset], - port->interrupt_out_size-offset); - + count = kfifo_out_locked(&priv->write_fifo, + &port->interrupt_out_buffer[offset], + port->interrupt_out_size - offset, + &priv->lock); if (count == 0) return; @@ -874,7 +856,7 @@ static int cypress_write_room(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); - room = cypress_buf_space_avail(priv->buf); + room = kfifo_avail(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); dbg("%s - returns %d", __func__, room); @@ -1142,7 +1124,7 @@ static int cypress_chars_in_buffer(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); - chars = cypress_buf_data_avail(priv->buf); + chars = kfifo_len(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); dbg("%s - returns %d", __func__, chars); @@ -1395,193 +1377,6 @@ static void cypress_write_int_callback(struct urb *urb) } -/***************************************************************************** - * Write buffer functions - buffering code from pl2303 used - *****************************************************************************/ - -/* - * cypress_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ - -static struct cypress_buf *cypress_buf_alloc(unsigned int size) -{ - - struct cypress_buf *cb; - - - if (size == 0) - return NULL; - - cb = kmalloc(sizeof(struct cypress_buf), GFP_KERNEL); - if (cb == NULL) - return NULL; - - cb->buf_buf = kmalloc(size, GFP_KERNEL); - if (cb->buf_buf == NULL) { - kfree(cb); - return NULL; - } - - cb->buf_size = size; - cb->buf_get = cb->buf_put = cb->buf_buf; - - return cb; - -} - - -/* - * cypress_buf_free - * - * Free the buffer and all associated memory. - */ - -static void cypress_buf_free(struct cypress_buf *cb) -{ - if (cb) { - kfree(cb->buf_buf); - kfree(cb); - } -} - - -/* - * cypress_buf_clear - * - * Clear out all data in the circular buffer. - */ - -static void cypress_buf_clear(struct cypress_buf *cb) -{ - if (cb != NULL) - cb->buf_get = cb->buf_put; - /* equivalent to a get of all data available */ -} - - -/* - * cypress_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ - -static unsigned int cypress_buf_data_avail(struct cypress_buf *cb) -{ - if (cb != NULL) - return (cb->buf_size + cb->buf_put - cb->buf_get) - % cb->buf_size; - else - return 0; -} - - -/* - * cypress_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ - -static unsigned int cypress_buf_space_avail(struct cypress_buf *cb) -{ - if (cb != NULL) - return (cb->buf_size + cb->buf_get - cb->buf_put - 1) - % cb->buf_size; - else - return 0; -} - - -/* - * cypress_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ - -static unsigned int cypress_buf_put(struct cypress_buf *cb, const char *buf, - unsigned int count) -{ - - unsigned int len; - - - if (cb == NULL) - return 0; - - len = cypress_buf_space_avail(cb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = cb->buf_buf + cb->buf_size - cb->buf_put; - if (count > len) { - memcpy(cb->buf_put, buf, len); - memcpy(cb->buf_buf, buf+len, count - len); - cb->buf_put = cb->buf_buf + count - len; - } else { - memcpy(cb->buf_put, buf, count); - if (count < len) - cb->buf_put += count; - else /* count == len */ - cb->buf_put = cb->buf_buf; - } - - return count; - -} - - -/* - * cypress_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ - -static unsigned int cypress_buf_get(struct cypress_buf *cb, char *buf, - unsigned int count) -{ - - unsigned int len; - - - if (cb == NULL) - return 0; - - len = cypress_buf_data_avail(cb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = cb->buf_buf + cb->buf_size - cb->buf_get; - if (count > len) { - memcpy(buf, cb->buf_get, len); - memcpy(buf+len, cb->buf_buf, count - len); - cb->buf_get = cb->buf_buf + count - len; - } else { - memcpy(buf, cb->buf_get, count); - if (count < len) - cb->buf_get += count; - else /* count == len */ - cb->buf_get = cb->buf_buf; - } - - return count; - -} - /***************************************************************************** * Module functions *****************************************************************************/ -- cgit v1.2.3-58-ga151 From e3c1803f8b33fb97005202fa3645501ebb946d93 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 20:33:51 +0200 Subject: USB: oti6858: use kfifo to implement write buffering Kill custom fifo implementation. Use private write fifo to minimise changes to lock handling. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/oti6858.c | 218 ++++--------------------------------------- 1 file changed, 17 insertions(+), 201 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index 525d8523df95..a65be37bf129 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -51,12 +51,13 @@ #include #include #include +#include #include "oti6858.h" #define OTI6858_DESCRIPTION \ "Ours Technology Inc. OTi-6858 USB to serial adapter driver" #define OTI6858_AUTHOR "Tomasz Michal Lukaszewski " -#define OTI6858_VERSION "0.1" +#define OTI6858_VERSION "0.2" static const struct usb_device_id id_table[] = { { USB_DEVICE(OTI6858_VENDOR_ID, OTI6858_PRODUCT_ID) }, @@ -75,17 +76,7 @@ static struct usb_driver oti6858_driver = { static int debug; - -/* buffering code, copied from pl2303 driver */ -#define PL2303_BUF_SIZE 1024 -#define PL2303_TMP_BUF_SIZE 1024 - -struct oti6858_buf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; +#define OTI6858_FIFO_SIZE 1024 /* requests */ #define OTI6858_REQ_GET_STATUS (USB_DIR_IN | USB_TYPE_VENDOR | 0x00) @@ -161,18 +152,6 @@ static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, static int oti6858_startup(struct usb_serial *serial); static void oti6858_release(struct usb_serial *serial); -/* functions operating on buffers */ -static struct oti6858_buf *oti6858_buf_alloc(unsigned int size); -static void oti6858_buf_free(struct oti6858_buf *pb); -static void oti6858_buf_clear(struct oti6858_buf *pb); -static unsigned int oti6858_buf_data_avail(struct oti6858_buf *pb); -static unsigned int oti6858_buf_space_avail(struct oti6858_buf *pb); -static unsigned int oti6858_buf_put(struct oti6858_buf *pb, const char *buf, - unsigned int count); -static unsigned int oti6858_buf_get(struct oti6858_buf *pb, char *buf, - unsigned int count); - - /* device info */ static struct usb_serial_driver oti6858_device = { .driver = { @@ -201,7 +180,7 @@ static struct usb_serial_driver oti6858_device = { struct oti6858_private { spinlock_t lock; - struct oti6858_buf *buf; + struct kfifo write_fifo; struct oti6858_control_pkt status; struct { @@ -315,7 +294,7 @@ static void send_data(struct work_struct *work) } priv->flags.write_urb_in_use = 1; - count = oti6858_buf_data_avail(priv->buf); + count = kfifo_len(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); if (count > port->bulk_out_size) count = port->bulk_out_size; @@ -350,10 +329,9 @@ static void send_data(struct work_struct *work) return; } - spin_lock_irqsave(&priv->lock, flags); - oti6858_buf_get(priv->buf, port->write_urb->transfer_buffer, count); - spin_unlock_irqrestore(&priv->lock, flags); - + count = kfifo_out_locked(&priv->write_fifo, + port->write_urb->transfer_buffer, + count, &priv->lock); port->write_urb->transfer_buffer_length = count; port->write_urb->dev = port->serial->dev; result = usb_submit_urb(port->write_urb, GFP_NOIO); @@ -376,8 +354,8 @@ static int oti6858_startup(struct usb_serial *serial) priv = kzalloc(sizeof(struct oti6858_private), GFP_KERNEL); if (!priv) break; - priv->buf = oti6858_buf_alloc(PL2303_BUF_SIZE); - if (priv->buf == NULL) { + if (kfifo_alloc(&priv->write_fifo, OTI6858_FIFO_SIZE, + GFP_KERNEL)) { kfree(priv); break; } @@ -397,7 +375,7 @@ static int oti6858_startup(struct usb_serial *serial) for (--i; i >= 0; --i) { priv = usb_get_serial_port_data(serial->port[i]); - oti6858_buf_free(priv->buf); + kfifo_free(&priv->write_fifo); kfree(priv); usb_set_serial_port_data(serial->port[i], NULL); } @@ -408,16 +386,13 @@ static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { struct oti6858_private *priv = usb_get_serial_port_data(port); - unsigned long flags; dbg("%s(port = %d, count = %d)", __func__, port->number, count); if (!count) return count; - spin_lock_irqsave(&priv->lock, flags); - count = oti6858_buf_put(priv->buf, buf, count); - spin_unlock_irqrestore(&priv->lock, flags); + count = kfifo_in_locked(&priv->write_fifo, buf, count, &priv->lock); return count; } @@ -432,7 +407,7 @@ static int oti6858_write_room(struct tty_struct *tty) dbg("%s(port = %d)", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); - room = oti6858_buf_space_avail(priv->buf); + room = kfifo_avail(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); return room; @@ -448,7 +423,7 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty) dbg("%s(port = %d)", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); - chars = oti6858_buf_data_avail(priv->buf); + chars = kfifo_len(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); return chars; @@ -642,7 +617,7 @@ static void oti6858_close(struct usb_serial_port *port) spin_lock_irqsave(&priv->lock, flags); /* clear out any remaining data in the buffer */ - oti6858_buf_clear(priv->buf); + kfifo_reset_out(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); dbg("%s(): after buf_clear()", __func__); @@ -793,7 +768,7 @@ static void oti6858_release(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { priv = usb_get_serial_port_data(serial->port[i]); if (priv) { - oti6858_buf_free(priv->buf); + kfifo_free(&priv->write_fifo); kfree(priv); } } @@ -892,7 +867,7 @@ static void oti6858_read_int_callback(struct urb *urb) spin_lock_irqsave(&priv->lock, flags); if (priv->flags.write_urb_in_use == 0 - && oti6858_buf_data_avail(priv->buf) != 0) { + && kfifo_len(&priv->write_fifo) != 0) { schedule_delayed_work(&priv->delayed_write_work, 0); resubmit = 0; } @@ -1014,165 +989,6 @@ static void oti6858_write_bulk_callback(struct urb *urb) } } - -/* - * oti6858_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ -static struct oti6858_buf *oti6858_buf_alloc(unsigned int size) -{ - struct oti6858_buf *pb; - - if (size == 0) - return NULL; - - pb = kmalloc(sizeof(struct oti6858_buf), GFP_KERNEL); - if (pb == NULL) - return NULL; - - pb->buf_buf = kmalloc(size, GFP_KERNEL); - if (pb->buf_buf == NULL) { - kfree(pb); - return NULL; - } - - pb->buf_size = size; - pb->buf_get = pb->buf_put = pb->buf_buf; - - return pb; -} - -/* - * oti6858_buf_free - * - * Free the buffer and all associated memory. - */ -static void oti6858_buf_free(struct oti6858_buf *pb) -{ - if (pb) { - kfree(pb->buf_buf); - kfree(pb); - } -} - -/* - * oti6858_buf_clear - * - * Clear out all data in the circular buffer. - */ -static void oti6858_buf_clear(struct oti6858_buf *pb) -{ - if (pb != NULL) { - /* equivalent to a get of all data available */ - pb->buf_get = pb->buf_put; - } -} - -/* - * oti6858_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ -static unsigned int oti6858_buf_data_avail(struct oti6858_buf *pb) -{ - if (pb == NULL) - return 0; - return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; -} - -/* - * oti6858_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ -static unsigned int oti6858_buf_space_avail(struct oti6858_buf *pb) -{ - if (pb == NULL) - return 0; - return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; -} - -/* - * oti6858_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ -static unsigned int oti6858_buf_put(struct oti6858_buf *pb, const char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL) - return 0; - - len = oti6858_buf_space_avail(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_put; - if (count > len) { - memcpy(pb->buf_put, buf, len); - memcpy(pb->buf_buf, buf+len, count - len); - pb->buf_put = pb->buf_buf + count - len; - } else { - memcpy(pb->buf_put, buf, count); - if (count < len) - pb->buf_put += count; - else /* count == len */ - pb->buf_put = pb->buf_buf; - } - - return count; -} - -/* - * oti6858_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ -static unsigned int oti6858_buf_get(struct oti6858_buf *pb, char *buf, - unsigned int count) -{ - unsigned int len; - - if (pb == NULL) - return 0; - - len = oti6858_buf_data_avail(pb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = pb->buf_buf + pb->buf_size - pb->buf_get; - if (count > len) { - memcpy(buf, pb->buf_get, len); - memcpy(buf+len, pb->buf_buf, count - len); - pb->buf_get = pb->buf_buf + count - len; - } else { - memcpy(buf, pb->buf_get, count); - if (count < len) - pb->buf_get += count; - else /* count == len */ - pb->buf_get = pb->buf_buf; - } - - return count; -} - /* module description and (de)initialization */ static int __init oti6858_init(void) -- cgit v1.2.3-58-ga151 From 28f27dcbd255b44a30bf75bb438fdb3415fda4c7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 20:33:52 +0200 Subject: USB: oti6858: use port write fifo Kill private write fifo and use port fifo instead (protected under port lock). Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/oti6858.c | 62 ++++++++++++++++++-------------------------- 1 file changed, 25 insertions(+), 37 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index a65be37bf129..e199b0f4f99c 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -76,8 +76,6 @@ static struct usb_driver oti6858_driver = { static int debug; -#define OTI6858_FIFO_SIZE 1024 - /* requests */ #define OTI6858_REQ_GET_STATUS (USB_DIR_IN | USB_TYPE_VENDOR | 0x00) #define OTI6858_REQ_T_GET_STATUS 0x01 @@ -180,7 +178,6 @@ static struct usb_serial_driver oti6858_device = { struct oti6858_private { spinlock_t lock; - struct kfifo write_fifo; struct oti6858_control_pkt status; struct { @@ -293,9 +290,12 @@ static void send_data(struct work_struct *work) return; } priv->flags.write_urb_in_use = 1; - - count = kfifo_len(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); + + spin_lock_irqsave(&port->lock, flags); + count = kfifo_len(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); + if (count > port->bulk_out_size) count = port->bulk_out_size; @@ -329,9 +329,9 @@ static void send_data(struct work_struct *work) return; } - count = kfifo_out_locked(&priv->write_fifo, + count = kfifo_out_locked(&port->write_fifo, port->write_urb->transfer_buffer, - count, &priv->lock); + count, &port->lock); port->write_urb->transfer_buffer_length = count; port->write_urb->dev = port->serial->dev; result = usb_submit_urb(port->write_urb, GFP_NOIO); @@ -354,11 +354,6 @@ static int oti6858_startup(struct usb_serial *serial) priv = kzalloc(sizeof(struct oti6858_private), GFP_KERNEL); if (!priv) break; - if (kfifo_alloc(&priv->write_fifo, OTI6858_FIFO_SIZE, - GFP_KERNEL)) { - kfree(priv); - break; - } spin_lock_init(&priv->lock); init_waitqueue_head(&priv->intr_wait); @@ -375,7 +370,6 @@ static int oti6858_startup(struct usb_serial *serial) for (--i; i >= 0; --i) { priv = usb_get_serial_port_data(serial->port[i]); - kfifo_free(&priv->write_fifo); kfree(priv); usb_set_serial_port_data(serial->port[i], NULL); } @@ -385,14 +379,12 @@ static int oti6858_startup(struct usb_serial *serial) static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { - struct oti6858_private *priv = usb_get_serial_port_data(port); - dbg("%s(port = %d, count = %d)", __func__, port->number, count); if (!count) return count; - count = kfifo_in_locked(&priv->write_fifo, buf, count, &priv->lock); + count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock); return count; } @@ -400,15 +392,14 @@ static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, static int oti6858_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct oti6858_private *priv = usb_get_serial_port_data(port); int room = 0; unsigned long flags; dbg("%s(port = %d)", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); - room = kfifo_avail(&priv->write_fifo); - spin_unlock_irqrestore(&priv->lock, flags); + spin_lock_irqsave(&port->lock, flags); + room = kfifo_avail(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); return room; } @@ -416,15 +407,14 @@ static int oti6858_write_room(struct tty_struct *tty) static int oti6858_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct oti6858_private *priv = usb_get_serial_port_data(port); int chars = 0; unsigned long flags; dbg("%s(port = %d)", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); - chars = kfifo_len(&priv->write_fifo); - spin_unlock_irqrestore(&priv->lock, flags); + spin_lock_irqsave(&port->lock, flags); + chars = kfifo_len(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); return chars; } @@ -615,10 +605,10 @@ static void oti6858_close(struct usb_serial_port *port) dbg("%s(port = %d)", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); + spin_lock_irqsave(&port->lock, flags); /* clear out any remaining data in the buffer */ - kfifo_reset_out(&priv->write_fifo); - spin_unlock_irqrestore(&priv->lock, flags); + kfifo_reset_out(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); dbg("%s(): after buf_clear()", __func__); @@ -760,18 +750,12 @@ static int oti6858_ioctl(struct tty_struct *tty, struct file *file, static void oti6858_release(struct usb_serial *serial) { - struct oti6858_private *priv; int i; dbg("%s()", __func__); - for (i = 0; i < serial->num_ports; ++i) { - priv = usb_get_serial_port_data(serial->port[i]); - if (priv) { - kfifo_free(&priv->write_fifo); - kfree(priv); - } - } + for (i = 0; i < serial->num_ports; ++i) + kfree(usb_get_serial_port_data(serial->port[i])); } static void oti6858_read_int_callback(struct urb *urb) @@ -864,10 +848,14 @@ static void oti6858_read_int_callback(struct urb *urb) } } else if (!transient) { unsigned long flags; + int count; + + spin_lock_irqsave(&port->lock, flags); + count = kfifo_len(&port->write_fifo); + spin_unlock_irqrestore(&port->lock, flags); spin_lock_irqsave(&priv->lock, flags); - if (priv->flags.write_urb_in_use == 0 - && kfifo_len(&priv->write_fifo) != 0) { + if (priv->flags.write_urb_in_use == 0 && count != 0) { schedule_delayed_work(&priv->delayed_write_work, 0); resubmit = 0; } -- cgit v1.2.3-58-ga151 From cbd3af54642ec1146bac0479538d495fc474318e Mon Sep 17 00:00:00 2001 From: Felipe Contreras Date: Sun, 16 May 2010 23:31:06 +0300 Subject: USB: usb-storage: trivial debug improvements Use pr_foo and dev_foo instead of printk. Maybe US_DEBUG* should be replaced too. Signed-off-by: Felipe Contreras Cc: Matthew Dharm Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/usb.c | 61 +++++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 29 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index e2798ef2dd19..55c526b81c7c 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -510,6 +510,7 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id, struct usb_device *dev = us->pusb_dev; struct usb_interface_descriptor *idesc = &us->pusb_intf->cur_altsetting->desc; + struct device *pdev = &us->pusb_intf->dev; /* Store the entries */ us->unusual_dev = unusual_dev; @@ -523,7 +524,7 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id, adjust_quirks(us); if (us->fflags & US_FL_IGNORE_DEVICE) { - printk(KERN_INFO USB_STORAGE "device ignored\n"); + dev_info(pdev, "device ignored\n"); return -ENODEV; } @@ -554,20 +555,20 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id, us->protocol == idesc->bInterfaceProtocol) msg += 2; if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) - printk(KERN_NOTICE USB_STORAGE "This device " - "(%04x,%04x,%04x S %02x P %02x)" - " has %s in unusual_devs.h (kernel" - " %s)\n" - " Please send a copy of this message to " - " and " - "\n", - le16_to_cpu(ddesc->idVendor), - le16_to_cpu(ddesc->idProduct), - le16_to_cpu(ddesc->bcdDevice), - idesc->bInterfaceSubClass, - idesc->bInterfaceProtocol, - msgs[msg], - utsname()->release); + dev_notice(pdev, "This device " + "(%04x,%04x,%04x S %02x P %02x)" + " has %s in unusual_devs.h (kernel" + " %s)\n" + " Please send a copy of this message to " + " and " + "\n", + le16_to_cpu(ddesc->idVendor), + le16_to_cpu(ddesc->idProduct), + le16_to_cpu(ddesc->bcdDevice), + idesc->bInterfaceSubClass, + idesc->bInterfaceProtocol, + msgs[msg], + utsname()->release); } return 0; @@ -717,8 +718,8 @@ static int usb_stor_acquire_resources(struct us_data *us) /* Start up our control thread */ th = kthread_run(usb_stor_control_thread, us, "usb-storage"); if (IS_ERR(th)) { - printk(KERN_WARNING USB_STORAGE - "Unable to start control thread\n"); + dev_warn(&us->pusb_intf->dev, + "Unable to start control thread\n"); return PTR_ERR(th); } us->ctl_thread = th; @@ -811,13 +812,14 @@ static void release_everything(struct us_data *us) static int usb_stor_scan_thread(void * __us) { struct us_data *us = (struct us_data *)__us; + struct device *dev = &us->pusb_intf->dev; - dev_dbg(&us->pusb_intf->dev, "device found\n"); + dev_dbg(dev, "device found\n"); set_freezable(); /* Wait for the timeout to expire or for a disconnect */ if (delay_use > 0) { - dev_dbg(&us->pusb_intf->dev, "waiting for device to settle " + dev_dbg(dev, "waiting for device to settle " "before scanning\n"); wait_event_freezable_timeout(us->delay_wait, test_bit(US_FLIDX_DONT_SCAN, &us->dflags), @@ -835,7 +837,7 @@ static int usb_stor_scan_thread(void * __us) mutex_unlock(&us->dev_mutex); } scsi_scan_host(us_to_host(us)); - dev_dbg(&us->pusb_intf->dev, "scan complete\n"); + dev_dbg(dev, "scan complete\n"); /* Should we unbind if no devices were detected? */ } @@ -871,8 +873,8 @@ int usb_stor_probe1(struct us_data **pus, */ host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us)); if (!host) { - printk(KERN_WARNING USB_STORAGE - "Unable to allocate the scsi host\n"); + dev_warn(&intf->dev, + "Unable to allocate the scsi host\n"); return -ENOMEM; } @@ -920,6 +922,7 @@ int usb_stor_probe2(struct us_data *us) { struct task_struct *th; int result; + struct device *dev = &us->pusb_intf->dev; /* Make sure the transport and protocol have both been set */ if (!us->transport || !us->proto_handler) { @@ -944,18 +947,18 @@ int usb_stor_probe2(struct us_data *us) goto BadDevice; snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", dev_name(&us->pusb_intf->dev)); - result = scsi_add_host(us_to_host(us), &us->pusb_intf->dev); + result = scsi_add_host(us_to_host(us), dev); if (result) { - printk(KERN_WARNING USB_STORAGE - "Unable to add the scsi host\n"); + dev_warn(dev, + "Unable to add the scsi host\n"); goto BadDevice; } /* Start up the thread for delayed SCSI-device scanning */ th = kthread_create(usb_stor_scan_thread, us, "usb-stor-scan"); if (IS_ERR(th)) { - printk(KERN_WARNING USB_STORAGE - "Unable to start the device-scanning thread\n"); + dev_warn(dev, + "Unable to start the device-scanning thread\n"); complete(&us->scanning_done); quiesce_and_remove_host(us); result = PTR_ERR(th); @@ -1041,12 +1044,12 @@ static int __init usb_stor_init(void) { int retval; - printk(KERN_INFO "Initializing USB Mass Storage driver...\n"); + pr_info("Initializing USB Mass Storage driver...\n"); /* register the driver, return usb_register return code if error */ retval = usb_register(&usb_storage_driver); if (retval == 0) { - printk(KERN_INFO "USB Mass Storage support registered.\n"); + pr_info("USB Mass Storage support registered.\n"); usb_usual_set_present(USB_US_TYPE_STOR); } return retval; -- cgit v1.2.3-58-ga151 From 39f2f080b39ceb7ccbc0da4bc13fea5698f7fa3a Mon Sep 17 00:00:00 2001 From: Felipe Contreras Date: Sun, 16 May 2010 23:31:07 +0300 Subject: usb-storage: always print quirks Right now quirks are printed only when the are manually overriden with the module parameters. It's not so useful to remind the user that his parameters are correctly applied; what is useful is to print out the quirks the user is not aware are being applied. So let's do the smart thing and print the quirks when they are present. Signed-off-by: Felipe Contreras Cc: Alan Stern Cc: Matthew Dharm Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/usb.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 55c526b81c7c..a7d0bf9d92a7 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -498,9 +498,6 @@ static void adjust_quirks(struct us_data *us) } } us->fflags = (us->fflags & ~mask) | f; - dev_info(&us->pusb_intf->dev, "Quirks match for " - "vid %04x pid %04x: %x\n", - vid, pid, f); } /* Get the unusual_devs entries and the string descriptors */ @@ -535,6 +532,12 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id, if (dev->speed != USB_SPEED_HIGH) us->fflags &= ~US_FL_GO_SLOW; + if (us->fflags) + dev_info(pdev, "Quirks match for vid %04x pid %04x: %lx\n", + le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct), + us->fflags); + /* Log a message if a non-generic unusual_dev entry contains an * unnecessary subclass or protocol override. This may stimulate * reports from users that will help us remove unneeded entries -- cgit v1.2.3-58-ga151 From 241c80ea72be4828c63f5dd44b142e54d0a12f5d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:30 +0200 Subject: USB: safe_serial: reimplement write using generic framework Kill custom single-urb write implementation. Note that this driver still depended on the write callback from the old generic framework. Tested against original read processing using a cp210x device in a loopback setup. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/safe_serial.c | 143 +++++++++------------------------------ 1 file changed, 32 insertions(+), 111 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c index 43a0cadd5782..915c094ef92c 100644 --- a/drivers/usb/serial/safe_serial.c +++ b/drivers/usb/serial/safe_serial.c @@ -1,6 +1,7 @@ /* * Safe Encapsulated USB Serial Driver * + * Copyright (C) 2010 Johan Hovold * Copyright (C) 2001 Lineo * Copyright (C) 2001 Hewlett-Packard * @@ -84,8 +85,8 @@ static int debug; static int safe = 1; static int padded = CONFIG_USB_SERIAL_SAFE_PADDED; -#define DRIVER_VERSION "v0.0b" -#define DRIVER_AUTHOR "sl@lineo.com, tbr@lineo.com" +#define DRIVER_VERSION "v0.1" +#define DRIVER_AUTHOR "sl@lineo.com, tbr@lineo.com, Johan Hovold " #define DRIVER_DESC "USB Safe Encapsulated Serial" MODULE_AUTHOR(DRIVER_AUTHOR); @@ -284,119 +285,40 @@ static void safe_read_bulk_callback(struct urb *urb) /* FIXME: Need a mechanism to retry later if this happens */ } -static int safe_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) +static int safe_prepare_write_buffer(struct usb_serial_port *port, + void *dest, size_t size) { - unsigned char *data; - int result; - int i; - int packet_length; - - dbg("safe_write port: %p %d urb: %p count: %d", - port, port->number, port->write_urb, count); - - if (!port->write_urb) { - dbg("%s - write urb NULL", __func__); - return 0; - } - - dbg("safe_write write_urb: %d transfer_buffer_length", - port->write_urb->transfer_buffer_length); - - if (!port->write_urb->transfer_buffer_length) { - dbg("%s - write urb transfer_buffer_length zero", __func__); - return 0; - } - if (count == 0) { - dbg("%s - write request of 0 bytes", __func__); - return 0; - } - spin_lock_bh(&port->lock); - if (port->write_urb_busy) { - spin_unlock_bh(&port->lock); - dbg("%s - already writing", __func__); - return 0; - } - port->write_urb_busy = 1; - spin_unlock_bh(&port->lock); - - packet_length = port->bulk_out_size; /* get max packetsize */ - - i = packet_length - (safe ? 2 : 0); /* get bytes to send */ - count = (count > i) ? i : count; - - - /* get the data into the transfer buffer */ - data = port->write_urb->transfer_buffer; - memset(data, '0', packet_length); - - memcpy(data, buf, count); - - if (safe) { - __u16 fcs; - - /* pad if necessary */ - if (!padded) - packet_length = count + 2; - /* set count */ - data[packet_length - 2] = count << 2; - data[packet_length - 1] = 0; - - /* compute fcs and insert into trailer */ - fcs = fcs_compute10(data, packet_length, CRC10_INITFCS); - data[packet_length - 2] |= fcs >> 8; - data[packet_length - 1] |= fcs & 0xff; - - /* set length to send */ - port->write_urb->transfer_buffer_length = packet_length; + unsigned char *buf = dest; + int count; + int trailer_len; + int pkt_len; + __u16 fcs; + + trailer_len = safe ? 2 : 0; + + count = kfifo_out_locked(&port->write_fifo, buf, size - trailer_len, + &port->lock); + if (!safe) + return count; + + /* pad if necessary */ + if (padded) { + pkt_len = size; + memset(buf + count, '0', pkt_len - count - trailer_len); } else { - port->write_urb->transfer_buffer_length = count; - } - - usb_serial_debug_data(debug, &port->dev, __func__, count, - port->write_urb->transfer_buffer); -#ifdef ECHO_TX - { - int i; - unsigned char *cp = port->write_urb->transfer_buffer; - for (i = 0; i < port->write_urb->transfer_buffer_length; i++) { - if ((i % 32) == 0) - printk("\nsu[%02x] ", i); - printk("%02x ", *cp++); - } - printk("\n"); + pkt_len = count + trailer_len; } -#endif - port->write_urb->dev = port->serial->dev; - result = usb_submit_urb(port->write_urb, GFP_KERNEL); - if (result) { - port->write_urb_busy = 0; - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - return 0; - } - dbg("%s urb: %p submitted", __func__, port->write_urb); - return count; -} - -static int safe_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - int room = 0; /* Default: no room */ - unsigned long flags; - - dbg("%s", __func__); + /* set count */ + buf[pkt_len - 2] = count << 2; + buf[pkt_len - 1] = 0; - spin_lock_irqsave(&port->lock, flags); - if (port->write_urb_busy) - room = port->bulk_out_size - (safe ? 2 : 0); - spin_unlock_irqrestore(&port->lock, flags); + /* compute fcs and insert into trailer */ + fcs = fcs_compute10(buf, pkt_len, CRC10_INITFCS); + buf[pkt_len - 2] |= fcs >> 8; + buf[pkt_len - 1] |= fcs & 0xff; - if (room) - dbg("safe_write_room returns %d", room); - return room; + return pkt_len; } static int safe_startup(struct usb_serial *serial) @@ -421,9 +343,8 @@ static struct usb_serial_driver safe_device = { .id_table = id_table, .usb_driver = &safe_driver, .num_ports = 1, - .write = safe_write, - .write_room = safe_write_room, .read_bulk_callback = safe_read_bulk_callback, + .prepare_write_buffer = safe_prepare_write_buffer, .attach = safe_startup, }; -- cgit v1.2.3-58-ga151 From 12e2e52cc578714d5824a27dd1a131a5418d636b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:31 +0200 Subject: USB: safe_serial: reimplement read using generic framework Use process_read_urb to implement read processing. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/safe_serial.c | 47 +++++++--------------------------------- 1 file changed, 8 insertions(+), 39 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c index 915c094ef92c..d9af5c5ed9e8 100644 --- a/drivers/usb/serial/safe_serial.c +++ b/drivers/usb/serial/safe_serial.c @@ -213,38 +213,20 @@ static __u16 __inline__ fcs_compute10(unsigned char *sp, int len, __u16 fcs) return fcs; } -static void safe_read_bulk_callback(struct urb *urb) +static void safe_process_read_urb(struct urb *urb) { - struct usb_serial_port *port = urb->context; + struct usb_serial_port *port = urb->context; unsigned char *data = urb->transfer_buffer; unsigned char length = urb->actual_length; struct tty_struct *tty; - int result; - int status = urb->status; - dbg("%s", __func__); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); + if (!length) return; - } - dbg("safe_read_bulk_callback length: %d", - port->read_urb->actual_length); -#ifdef ECHO_RCV - { - int i; - unsigned char *cp = port->read_urb->transfer_buffer; - for (i = 0; i < port->read_urb->actual_length; i++) { - if ((i % 32) == 0) - printk("\nru[%02x] ", i); - printk("%02x ", *cp++); - } - printk("\n"); - } -#endif tty = tty_port_tty_get(&port->port); + if (!tty) + return; + if (safe) { __u16 fcs; fcs = fcs_compute10(data, length, CRC10_INITFCS); @@ -268,21 +250,8 @@ static void safe_read_bulk_callback(struct urb *urb) tty_insert_flip_string(tty, data, length); tty_flip_buffer_push(tty); } - tty_kref_put(tty); - /* Continue trying to always read */ - usb_fill_bulk_urb(urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - urb->transfer_buffer, urb->transfer_buffer_length, - safe_read_bulk_callback, port); - - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - /* FIXME: Need a mechanism to retry later if this happens */ + tty_kref_put(tty); } static int safe_prepare_write_buffer(struct usb_serial_port *port, @@ -343,7 +312,7 @@ static struct usb_serial_driver safe_device = { .id_table = id_table, .usb_driver = &safe_driver, .num_ports = 1, - .read_bulk_callback = safe_read_bulk_callback, + .process_read_urb = safe_process_read_urb, .prepare_write_buffer = safe_prepare_write_buffer, .attach = safe_startup, }; -- cgit v1.2.3-58-ga151 From 6d1bf48e240bde4e9c7313ccdd2fe32f37f67ad4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:32 +0200 Subject: USB: safe_serial: straighten out read processing Clean up read processing logic. Tested using a cp210x device in a loopback setup. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/safe_serial.c | 43 ++++++++++++++++++++-------------------- 1 file changed, 21 insertions(+), 22 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c index d9af5c5ed9e8..a36e2313eed0 100644 --- a/drivers/usb/serial/safe_serial.c +++ b/drivers/usb/serial/safe_serial.c @@ -218,7 +218,9 @@ static void safe_process_read_urb(struct urb *urb) struct usb_serial_port *port = urb->context; unsigned char *data = urb->transfer_buffer; unsigned char length = urb->actual_length; + int actual_length; struct tty_struct *tty; + __u16 fcs; if (!length) return; @@ -227,30 +229,27 @@ static void safe_process_read_urb(struct urb *urb) if (!tty) return; - if (safe) { - __u16 fcs; - fcs = fcs_compute10(data, length, CRC10_INITFCS); - if (!fcs) { - int actual_length = data[length - 2] >> 2; - if (actual_length <= (length - 2)) { - dev_info(&urb->dev->dev, "%s - actual: %d\n", - __func__, actual_length); - tty_insert_flip_string(tty, - data, actual_length); - tty_flip_buffer_push(tty); - } else { - dev_err(&port->dev, - "%s - inconsistent lengths %d:%d\n", - __func__, actual_length, length); - } - } else { - dev_err(&port->dev, "%s - bad CRC %x\n", __func__, fcs); - } - } else { - tty_insert_flip_string(tty, data, length); - tty_flip_buffer_push(tty); + if (!safe) + goto out; + + fcs = fcs_compute10(data, length, CRC10_INITFCS); + if (fcs) { + dev_err(&port->dev, "%s - bad CRC %x\n", __func__, fcs); + goto err; } + actual_length = data[length - 2] >> 2; + if (actual_length > (length - 2)) { + dev_err(&port->dev, "%s - inconsistent lengths %d:%d\n", + __func__, actual_length, length); + goto err; + } + dev_info(&urb->dev->dev, "%s - actual: %d\n", __func__, actual_length); + length = actual_length; +out: + tty_insert_flip_string(tty, data, length); + tty_flip_buffer_push(tty); +err: tty_kref_put(tty); } -- cgit v1.2.3-58-ga151 From f26c2889a4d937371e2ec9b5690ac407f0496634 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:33 +0200 Subject: USB: aircable: fix incorrect write-buffer length Returned length should include header length. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/aircable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index 8a990a763c21..0db6ace16f7b 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -95,7 +95,7 @@ static int aircable_prepare_write_buffer(struct usb_serial_port *port, buf[1] = TX_HEADER_1; put_unaligned_le16(count, &buf[2]); - return count; + return count + HCI_HEADER_LENGTH; } static int aircable_probe(struct usb_serial *serial, -- cgit v1.2.3-58-ga151 From e421fe97adf96a2b1f9d89140ec3e184f0cb7d7c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:34 +0200 Subject: USB: ir-usb: fix incorrect write-buffer length Returned length should include header length. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index e7087f9fe479..ccbce4066d04 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -307,6 +307,7 @@ static int ir_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size) { unsigned char *buf = dest; + int count; /* * The first byte of the packet we send to the device contains an @@ -317,8 +318,9 @@ static int ir_prepare_write_buffer(struct usb_serial_port *port, */ *buf = ir_xbof | ir_baud; - return kfifo_out_locked(&port->write_fifo, buf + 1, size - 1, + count = kfifo_out_locked(&port->write_fifo, buf + 1, size - 1, &port->lock); + return count + 1; } static void ir_process_read_urb(struct urb *urb) -- cgit v1.2.3-58-ga151 From 074ef65aacdf4eb5a0af191e85ded8c995047e9d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:35 +0200 Subject: USB: ti_usb: use kfifo to implement write buffering Kill custom fifo implementation. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ti_usb_3410_5052.c | 179 +++------------------------------- 1 file changed, 14 insertions(+), 165 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index e1bfda33f5b9..90979a1f5311 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -30,7 +30,7 @@ #include #include #include -#include +#include #include #include #include @@ -40,7 +40,7 @@ /* Defines */ -#define TI_DRIVER_VERSION "v0.9" +#define TI_DRIVER_VERSION "v0.10" #define TI_DRIVER_AUTHOR "Al Borchers " #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" @@ -82,7 +82,7 @@ struct ti_port { spinlock_t tp_lock; int tp_read_urb_state; int tp_write_urb_in_use; - struct circ_buf *tp_write_buf; + struct kfifo write_fifo; }; struct ti_device { @@ -144,15 +144,6 @@ static int ti_write_byte(struct ti_device *tdev, unsigned long addr, static int ti_download_firmware(struct ti_device *tdev); -/* circular buffer */ -static struct circ_buf *ti_buf_alloc(void); -static void ti_buf_free(struct circ_buf *cb); -static void ti_buf_clear(struct circ_buf *cb); -static int ti_buf_data_avail(struct circ_buf *cb); -static int ti_buf_space_avail(struct circ_buf *cb); -static int ti_buf_put(struct circ_buf *cb, const char *buf, int count); -static int ti_buf_get(struct circ_buf *cb, char *buf, int count); - /* Data */ @@ -450,8 +441,8 @@ static int ti_startup(struct usb_serial *serial) tport->tp_closing_wait = closing_wait; init_waitqueue_head(&tport->tp_msr_wait); init_waitqueue_head(&tport->tp_write_wait); - tport->tp_write_buf = ti_buf_alloc(); - if (tport->tp_write_buf == NULL) { + if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, + GFP_KERNEL)) { dev_err(&dev->dev, "%s - out of memory\n", __func__); kfree(tport); status = -ENOMEM; @@ -468,7 +459,7 @@ static int ti_startup(struct usb_serial *serial) free_tports: for (--i; i >= 0; --i) { tport = usb_get_serial_port_data(serial->port[i]); - ti_buf_free(tport->tp_write_buf); + kfifo_free(&tport->write_fifo); kfree(tport); usb_set_serial_port_data(serial->port[i], NULL); } @@ -490,7 +481,7 @@ static void ti_release(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { tport = usb_get_serial_port_data(serial->port[i]); if (tport) { - ti_buf_free(tport->tp_write_buf); + kfifo_free(&tport->write_fifo); kfree(tport); } } @@ -701,7 +692,6 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count) { struct ti_port *tport = usb_get_serial_port_data(port); - unsigned long flags; dbg("%s - port %d", __func__, port->number); @@ -713,10 +703,8 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, if (tport == NULL || !tport->tp_is_open) return -ENODEV; - spin_lock_irqsave(&tport->tp_lock, flags); - count = ti_buf_put(tport->tp_write_buf, data, count); - spin_unlock_irqrestore(&tport->tp_lock, flags); - + count = kfifo_in_locked(&tport->write_fifo, data, count, + &tport->tp_lock); ti_send(tport); return count; @@ -736,7 +724,7 @@ static int ti_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - room = ti_buf_space_avail(tport->tp_write_buf); + room = kfifo_avail(&tport->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dbg("%s - returns %d", __func__, room); @@ -757,7 +745,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - chars = ti_buf_data_avail(tport->tp_write_buf); + chars = kfifo_len(&tport->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dbg("%s - returns %d", __func__, chars); @@ -1309,7 +1297,7 @@ static void ti_send(struct ti_port *tport) if (tport->tp_write_urb_in_use) goto unlock; - count = ti_buf_get(tport->tp_write_buf, + count = kfifo_out(&tport->write_fifo, port->write_urb->transfer_buffer, port->bulk_out_size); @@ -1504,7 +1492,7 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) add_wait_queue(&tport->tp_write_wait, &wait); for (;;) { set_current_state(TASK_INTERRUPTIBLE); - if (ti_buf_data_avail(tport->tp_write_buf) == 0 + if (kfifo_len(&tport->write_fifo) == 0 || timeout == 0 || signal_pending(current) || tdev->td_urb_error || port->serial->disconnected) /* disconnect */ @@ -1518,7 +1506,7 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) /* flush any remaining data in the buffer */ if (flush) - ti_buf_clear(tport->tp_write_buf); + kfifo_reset_out(&tport->write_fifo); spin_unlock_irq(&tport->tp_lock); @@ -1761,142 +1749,3 @@ static int ti_download_firmware(struct ti_device *tdev) return 0; } - - -/* Circular Buffer Functions */ - -/* - * ti_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ - -static struct circ_buf *ti_buf_alloc(void) -{ - struct circ_buf *cb; - - cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); - if (cb == NULL) - return NULL; - - cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL); - if (cb->buf == NULL) { - kfree(cb); - return NULL; - } - - ti_buf_clear(cb); - - return cb; -} - - -/* - * ti_buf_free - * - * Free the buffer and all associated memory. - */ - -static void ti_buf_free(struct circ_buf *cb) -{ - kfree(cb->buf); - kfree(cb); -} - - -/* - * ti_buf_clear - * - * Clear out all data in the circular buffer. - */ - -static void ti_buf_clear(struct circ_buf *cb) -{ - cb->head = cb->tail = 0; -} - - -/* - * ti_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ - -static int ti_buf_data_avail(struct circ_buf *cb) -{ - return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE); -} - - -/* - * ti_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ - -static int ti_buf_space_avail(struct circ_buf *cb) -{ - return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE); -} - - -/* - * ti_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ - -static int ti_buf_put(struct circ_buf *cb, const char *buf, int count) -{ - int c, ret = 0; - - while (1) { - c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); - if (count < c) - c = count; - if (c <= 0) - break; - memcpy(cb->buf + cb->head, buf, c); - cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1); - buf += c; - count -= c; - ret += c; - } - - return ret; -} - - -/* - * ti_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ - -static int ti_buf_get(struct circ_buf *cb, char *buf, int count) -{ - int c, ret = 0; - - while (1) { - c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); - if (count < c) - c = count; - if (c <= 0) - break; - memcpy(buf, cb->buf + cb->tail, c); - cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1); - buf += c; - count -= c; - ret += c; - } - - return ret; -} -- cgit v1.2.3-58-ga151 From a3a30f10f56987a1df0dea857a706273145ed6fd Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:36 +0200 Subject: USB: io_ti: remove unsused private counter Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index aa876f71f228..2e3d0acbc389 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -56,10 +56,6 @@ #define EPROM_PAGE_SIZE 64 -struct edgeport_uart_buf_desc { - __u32 count; /* Number of bytes currently in buffer */ -}; - /* different hardware types */ #define HARDWARE_TYPE_930 0 #define HARDWARE_TYPE_TIUMP 1 @@ -108,7 +104,6 @@ struct edgeport_port { int baud_rate; int close_pending; int lsr_event; - struct edgeport_uart_buf_desc tx; struct async_icount icount; wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to -- cgit v1.2.3-58-ga151 From d733cec1ab0ab3b34e4acfc413cb31157eea67c3 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:37 +0200 Subject: USB: io_ti: use kfifo to implement write buffering Kill custom fifo implementation. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 223 +++------------------------------------------ 1 file changed, 13 insertions(+), 210 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 2e3d0acbc389..0fca2659206f 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -83,14 +84,6 @@ struct product_info { __u8 hardware_type; /* Type of hardware */ } __attribute__((packed)); -/* circular buffer */ -struct edge_buf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; - struct edgeport_port { __u16 uart_base; __u16 dma_address; @@ -114,7 +107,7 @@ struct edgeport_port { spinlock_t ep_lock; int ep_read_urb_state; int ep_write_urb_in_use; - struct edge_buf *ep_out_buf; + struct kfifo write_fifo; }; struct edgeport_serial { @@ -244,17 +237,6 @@ static void edge_send(struct tty_struct *tty); static int edge_create_sysfs_attrs(struct usb_serial_port *port); static int edge_remove_sysfs_attrs(struct usb_serial_port *port); -/* circular buffer */ -static struct edge_buf *edge_buf_alloc(unsigned int size); -static void edge_buf_free(struct edge_buf *eb); -static void edge_buf_clear(struct edge_buf *eb); -static unsigned int edge_buf_data_avail(struct edge_buf *eb); -static unsigned int edge_buf_space_avail(struct edge_buf *eb); -static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, - unsigned int count); -static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, - unsigned int count); - static int ti_vread_sync(struct usb_device *dev, __u8 request, __u16 value, __u16 index, u8 *data, int size) @@ -585,7 +567,7 @@ static void chase_port(struct edgeport_port *port, unsigned long timeout, add_wait_queue(&tty->write_wait, &wait); for (;;) { set_current_state(TASK_INTERRUPTIBLE); - if (edge_buf_data_avail(port->ep_out_buf) == 0 + if (kfifo_len(&port->write_fifo) == 0 || timeout == 0 || signal_pending(current) || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */ @@ -597,7 +579,7 @@ static void chase_port(struct edgeport_port *port, unsigned long timeout, set_current_state(TASK_RUNNING); remove_wait_queue(&tty->write_wait, &wait); if (flush) - edge_buf_clear(port->ep_out_buf); + kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&port->ep_lock, flags); tty_kref_put(tty); @@ -2084,7 +2066,6 @@ static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); - unsigned long flags; dbg("%s - port %d", __func__, port->number); @@ -2098,10 +2079,8 @@ static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, if (edge_port->close_pending == 1) return -ENODEV; - spin_lock_irqsave(&edge_port->ep_lock, flags); - count = edge_buf_put(edge_port->ep_out_buf, data, count); - spin_unlock_irqrestore(&edge_port->ep_lock, flags); - + count = kfifo_in_locked(&edge_port->write_fifo, data, count, + &edge_port->ep_lock); edge_send(tty); return count; @@ -2124,7 +2103,7 @@ static void edge_send(struct tty_struct *tty) return; } - count = edge_buf_get(edge_port->ep_out_buf, + count = kfifo_out(&edge_port->write_fifo, port->write_urb->transfer_buffer, port->bulk_out_size); @@ -2180,7 +2159,7 @@ static int edge_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); - room = edge_buf_space_avail(edge_port->ep_out_buf); + room = kfifo_avail(&edge_port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); dbg("%s - returns %d", __func__, room); @@ -2202,7 +2181,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); - chars = edge_buf_data_avail(edge_port->ep_out_buf); + chars = kfifo_len(&edge_port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); dbg("%s - returns %d", __func__, chars); @@ -2659,8 +2638,8 @@ static int edge_startup(struct usb_serial *serial) goto cleanup; } spin_lock_init(&edge_port->ep_lock); - edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); - if (edge_port->ep_out_buf == NULL) { + if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, + GFP_KERNEL)) { dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); kfree(edge_port); @@ -2677,7 +2656,7 @@ static int edge_startup(struct usb_serial *serial) cleanup: for (--i; i >= 0; --i) { edge_port = usb_get_serial_port_data(serial->port[i]); - edge_buf_free(edge_port->ep_out_buf); + kfifo_free(&edge_port->write_fifo); kfree(edge_port); usb_set_serial_port_data(serial->port[i], NULL); } @@ -2708,7 +2687,7 @@ static void edge_release(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { edge_port = usb_get_serial_port_data(serial->port[i]); - edge_buf_free(edge_port->ep_out_buf); + kfifo_free(&edge_port->write_fifo); kfree(edge_port); } kfree(usb_get_serial_data(serial)); @@ -2758,182 +2737,6 @@ static int edge_remove_sysfs_attrs(struct usb_serial_port *port) } -/* Circular Buffer */ - -/* - * edge_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ - -static struct edge_buf *edge_buf_alloc(unsigned int size) -{ - struct edge_buf *eb; - - - if (size == 0) - return NULL; - - eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL); - if (eb == NULL) - return NULL; - - eb->buf_buf = kmalloc(size, GFP_KERNEL); - if (eb->buf_buf == NULL) { - kfree(eb); - return NULL; - } - - eb->buf_size = size; - eb->buf_get = eb->buf_put = eb->buf_buf; - - return eb; -} - - -/* - * edge_buf_free - * - * Free the buffer and all associated memory. - */ - -static void edge_buf_free(struct edge_buf *eb) -{ - if (eb) { - kfree(eb->buf_buf); - kfree(eb); - } -} - - -/* - * edge_buf_clear - * - * Clear out all data in the circular buffer. - */ - -static void edge_buf_clear(struct edge_buf *eb) -{ - if (eb != NULL) - eb->buf_get = eb->buf_put; - /* equivalent to a get of all data available */ -} - - -/* - * edge_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ - -static unsigned int edge_buf_data_avail(struct edge_buf *eb) -{ - if (eb == NULL) - return 0; - return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); -} - - -/* - * edge_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ - -static unsigned int edge_buf_space_avail(struct edge_buf *eb) -{ - if (eb == NULL) - return 0; - return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); -} - - -/* - * edge_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ - -static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, - unsigned int count) -{ - unsigned int len; - - - if (eb == NULL) - return 0; - - len = edge_buf_space_avail(eb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = eb->buf_buf + eb->buf_size - eb->buf_put; - if (count > len) { - memcpy(eb->buf_put, buf, len); - memcpy(eb->buf_buf, buf+len, count - len); - eb->buf_put = eb->buf_buf + count - len; - } else { - memcpy(eb->buf_put, buf, count); - if (count < len) - eb->buf_put += count; - else /* count == len */ - eb->buf_put = eb->buf_buf; - } - - return count; -} - - -/* - * edge_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ - -static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, - unsigned int count) -{ - unsigned int len; - - - if (eb == NULL) - return 0; - - len = edge_buf_data_avail(eb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = eb->buf_buf + eb->buf_size - eb->buf_get; - if (count > len) { - memcpy(buf, eb->buf_get, len); - memcpy(buf+len, eb->buf_buf, count - len); - eb->buf_get = eb->buf_buf + count - len; - } else { - memcpy(buf, eb->buf_get, count); - if (count < len) - eb->buf_get += count; - else /* count == len */ - eb->buf_get = eb->buf_buf; - } - - return count; -} - - static struct usb_serial_driver edgeport_1port_device = { .driver = { .owner = THIS_MODULE, -- cgit v1.2.3-58-ga151 From 313b0d80c1717ffe8f64b455a4d323996748b91a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:38 +0200 Subject: USB: kl5usb105: fix memory leak Private data was not freed on error path in startup. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kl5kusb105.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 8eef91ba4b1c..cc0ba38d4748 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -321,6 +321,7 @@ err_cleanup: usb_free_urb(priv->write_urb_pool[j]); } } + kfree(priv); usb_set_serial_port_data(serial->port[i], NULL); } return -ENOMEM; -- cgit v1.2.3-58-ga151 From ff8c195ff56d5d4226d4c1586e89b7b2e96c120a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:39 +0200 Subject: USB: kl5usb105: minor clean ups Whitespace changes and some removed comments. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kl5kusb105.c | 79 +++++++++++++++++------------------------ 1 file changed, 33 insertions(+), 46 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index cc0ba38d4748..ad168255cc04 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -107,7 +107,7 @@ static struct usb_driver kl5kusb105d_driver = { .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table, - .no_dynamic_id = 1, + .no_dynamic_id = 1, }; static struct usb_serial_driver kl5kusb105d_device = { @@ -115,26 +115,26 @@ static struct usb_serial_driver kl5kusb105d_device = { .owner = THIS_MODULE, .name = "kl5kusb105d", }, - .description = "KL5KUSB105D / PalmConnect", - .usb_driver = &kl5kusb105d_driver, - .id_table = id_table, - .num_ports = 1, - .open = klsi_105_open, - .close = klsi_105_close, - .write = klsi_105_write, - .write_bulk_callback = klsi_105_write_bulk_callback, - .chars_in_buffer = klsi_105_chars_in_buffer, - .write_room = klsi_105_write_room, - .read_bulk_callback = klsi_105_read_bulk_callback, - .set_termios = klsi_105_set_termios, - /*.break_ctl = klsi_105_break_ctl,*/ - .tiocmget = klsi_105_tiocmget, - .tiocmset = klsi_105_tiocmset, - .attach = klsi_105_startup, - .disconnect = klsi_105_disconnect, - .release = klsi_105_release, - .throttle = klsi_105_throttle, - .unthrottle = klsi_105_unthrottle, + .description = "KL5KUSB105D / PalmConnect", + .usb_driver = &kl5kusb105d_driver, + .id_table = id_table, + .num_ports = 1, + .open = klsi_105_open, + .close = klsi_105_close, + .write = klsi_105_write, + .write_bulk_callback = klsi_105_write_bulk_callback, + .chars_in_buffer = klsi_105_chars_in_buffer, + .write_room = klsi_105_write_room, + .read_bulk_callback = klsi_105_read_bulk_callback, + .set_termios = klsi_105_set_termios, + /*.break_ctl = klsi_105_break_ctl,*/ + .tiocmget = klsi_105_tiocmget, + .tiocmset = klsi_105_tiocmset, + .attach = klsi_105_startup, + .disconnect = klsi_105_disconnect, + .release = klsi_105_release, + .throttle = klsi_105_throttle, + .unthrottle = klsi_105_unthrottle, }; struct klsi_105_port_settings { @@ -189,7 +189,7 @@ static int klsi_105_chg_port_settings(struct usb_serial_port *port, settings->pktlen, settings->baudrate, settings->databits, settings->unknown1, settings->unknown2); return rc; -} /* klsi_105_chg_port_settings */ +} /* translate a 16-bit status value from the device to linux's TIO bits */ static unsigned long klsi_105_status2linestate(const __u16 status) @@ -202,6 +202,7 @@ static unsigned long klsi_105_status2linestate(const __u16 status) return res; } + /* * Read line control via vendor command and return result through * *line_state_p @@ -325,8 +326,7 @@ err_cleanup: usb_set_serial_port_data(serial->port[i], NULL); } return -ENOMEM; -} /* klsi_105_startup */ - +} static void klsi_105_disconnect(struct usb_serial *serial) { @@ -352,8 +352,7 @@ static void klsi_105_disconnect(struct usb_serial *serial) } } } -} /* klsi_105_disconnect */ - +} static void klsi_105_release(struct usb_serial *serial) { @@ -367,7 +366,7 @@ static void klsi_105_release(struct usb_serial *serial) kfree(priv); } -} /* klsi_105_release */ +} static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) { @@ -461,8 +460,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) exit: kfree(cfg); return retval; -} /* klsi_105_open */ - +} static void klsi_105_close(struct usb_serial_port *port) { @@ -498,8 +496,7 @@ static void klsi_105_close(struct usb_serial_port *port) dev_info(&port->serial->dev->dev, "port stats: %ld bytes in, %ld bytes out\n", priv->bytes_in, priv->bytes_out); -} /* klsi_105_close */ - +} /* We need to write a complete 64-byte data block and encode the * number actually sent in the first double-byte, LSB-order. That @@ -507,7 +504,6 @@ static void klsi_105_close(struct usb_serial_port *port) */ #define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */ - static int klsi_105_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { @@ -586,7 +582,7 @@ exit: priv->bytes_out += bytes_sent; return bytes_sent; /* that's how much we wrote */ -} /* klsi_105_write */ +} static void klsi_105_write_bulk_callback(struct urb *urb) { @@ -602,8 +598,7 @@ static void klsi_105_write_bulk_callback(struct urb *urb) } usb_serial_port_softint(port); -} /* klsi_105_write_bulk_completion_callback */ - +} /* return number of characters currently in the writing process */ static int klsi_105_chars_in_buffer(struct tty_struct *tty) @@ -647,8 +642,6 @@ static int klsi_105_write_room(struct tty_struct *tty) return room; } - - static void klsi_105_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; @@ -720,8 +713,7 @@ static void klsi_105_read_bulk_callback(struct urb *urb) dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __func__, rc); -} /* klsi_105_read_bulk_callback */ - +} static void klsi_105_set_termios(struct tty_struct *tty, struct usb_serial_port *port, @@ -888,8 +880,7 @@ static void klsi_105_set_termios(struct tty_struct *tty, klsi_105_chg_port_settings(port, cfg); err: kfree(cfg); -} /* klsi_105_set_termios */ - +} #if 0 static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) @@ -907,7 +898,7 @@ static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) lcr |= MCT_U232_SET_BREAK; mct_u232_set_line_ctrl(serial, lcr); -} /* mct_u232_break_ctl */ +} #endif static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file) @@ -986,7 +977,6 @@ static void klsi_105_unthrottle(struct tty_struct *tty) } - static int __init klsi_105_init(void) { int retval; @@ -1006,7 +996,6 @@ failed_usb_serial_register: return retval; } - static void __exit klsi_105_exit(void) { usb_deregister(&kl5kusb105d_driver); @@ -1024,5 +1013,3 @@ MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "enable extensive debugging messages"); - -/* vim: set sts=8 ts=8 sw=8: */ -- cgit v1.2.3-58-ga151 From 60b3013cdaf3fa8a17243ca46b19db3cbe08d943 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:40 +0200 Subject: USB: kl5usb105: reimplement using generic framework Kill custom read and write implementations (static per-port, singleton(!) urb pool). Also remove changelog header (can be retrieved through git). Read processing and write-buffer handling tested using a cp210x device in a loopback setup. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/kl5kusb105.c | 380 +++++----------------------------------- 1 file changed, 47 insertions(+), 333 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index ad168255cc04..cdbe8bf7f674 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -1,6 +1,7 @@ /* * KLSI KL5KUSB105 chip RS232 converter driver * + * Copyright (C) 2010 Johan Hovold * Copyright (C) 2001 Utz-Uwe Haus * * This program is free software; you can redistribute it and/or modify @@ -34,17 +35,6 @@ * implement handshaking or decide that we do not support it */ -/* History: - * 0.3a - implemented pools of write URBs - * 0.3 - alpha version for public testing - * 0.2 - TIOCMGET works, so autopilot(1) can be used! - * 0.1 - can be used to do pilot-xfer -p /dev/ttyUSB0 -l - * - * The driver skeleton is mainly based on mct_u232.c and various other - * pieces of code shamelessly copied from the drivers/usb/serial/ directory. - */ - - #include #include #include @@ -64,8 +54,8 @@ static int debug; /* * Version Information */ -#define DRIVER_VERSION "v0.3a" -#define DRIVER_AUTHOR "Utz-Uwe Haus " +#define DRIVER_VERSION "v0.4" +#define DRIVER_AUTHOR "Utz-Uwe Haus , Johan Hovold " #define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver" @@ -73,23 +63,17 @@ static int debug; * Function prototypes */ static int klsi_105_startup(struct usb_serial *serial); -static void klsi_105_disconnect(struct usb_serial *serial); static void klsi_105_release(struct usb_serial *serial); static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port); static void klsi_105_close(struct usb_serial_port *port); -static int klsi_105_write(struct tty_struct *tty, - struct usb_serial_port *port, const unsigned char *buf, int count); -static void klsi_105_write_bulk_callback(struct urb *urb); -static int klsi_105_chars_in_buffer(struct tty_struct *tty); -static int klsi_105_write_room(struct tty_struct *tty); -static void klsi_105_read_bulk_callback(struct urb *urb); static void klsi_105_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static void klsi_105_throttle(struct tty_struct *tty); -static void klsi_105_unthrottle(struct tty_struct *tty); static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file); static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); +static void klsi_105_process_read_urb(struct urb *urb); +static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, + void *dest, size_t size); /* * All of the device info needed for the KLSI converters. @@ -119,22 +103,19 @@ static struct usb_serial_driver kl5kusb105d_device = { .usb_driver = &kl5kusb105d_driver, .id_table = id_table, .num_ports = 1, + .bulk_out_size = 64, .open = klsi_105_open, .close = klsi_105_close, - .write = klsi_105_write, - .write_bulk_callback = klsi_105_write_bulk_callback, - .chars_in_buffer = klsi_105_chars_in_buffer, - .write_room = klsi_105_write_room, - .read_bulk_callback = klsi_105_read_bulk_callback, .set_termios = klsi_105_set_termios, /*.break_ctl = klsi_105_break_ctl,*/ .tiocmget = klsi_105_tiocmget, .tiocmset = klsi_105_tiocmset, .attach = klsi_105_startup, - .disconnect = klsi_105_disconnect, .release = klsi_105_release, - .throttle = klsi_105_throttle, - .unthrottle = klsi_105_unthrottle, + .throttle = usb_serial_generic_throttle, + .unthrottle = usb_serial_generic_unthrottle, + .process_read_urb = klsi_105_process_read_urb, + .prepare_write_buffer = klsi_105_prepare_write_buffer, }; struct klsi_105_port_settings { @@ -145,18 +126,11 @@ struct klsi_105_port_settings { __u8 unknown2; } __attribute__ ((packed)); -/* we implement a pool of NUM_URBS urbs per usb_serial */ -#define NUM_URBS 1 -#define URB_TRANSFER_BUFFER_SIZE 64 struct klsi_105_private { struct klsi_105_port_settings cfg; struct ktermios termios; unsigned long line_state; /* modem line settings */ - /* write pool */ - struct urb *write_urb_pool[NUM_URBS]; spinlock_t lock; - unsigned long bytes_in; - unsigned long bytes_out; }; @@ -259,7 +233,7 @@ static int klsi_105_get_line_state(struct usb_serial_port *port, static int klsi_105_startup(struct usb_serial *serial) { struct klsi_105_private *priv; - int i, j; + int i; /* check if we support the product id (see keyspan.c) * FIXME @@ -283,29 +257,9 @@ static int klsi_105_startup(struct usb_serial *serial) priv->line_state = 0; - priv->bytes_in = 0; - priv->bytes_out = 0; usb_set_serial_port_data(serial->port[i], priv); spin_lock_init(&priv->lock); - for (j = 0; j < NUM_URBS; j++) { - struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); - - priv->write_urb_pool[j] = urb; - if (urb == NULL) { - dev_err(&serial->dev->dev, "No more urbs???\n"); - goto err_cleanup; - } - - urb->transfer_buffer = - kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); - if (!urb->transfer_buffer) { - dev_err(&serial->dev->dev, - "%s - out of memory for urb buffers.\n", - __func__); - goto err_cleanup; - } - } /* priv->termios is left uninitalized until port opening */ init_waitqueue_head(&serial->port[i]->write_wait); @@ -316,56 +270,20 @@ static int klsi_105_startup(struct usb_serial *serial) err_cleanup: for (; i >= 0; i--) { priv = usb_get_serial_port_data(serial->port[i]); - for (j = 0; j < NUM_URBS; j++) { - if (priv->write_urb_pool[j]) { - kfree(priv->write_urb_pool[j]->transfer_buffer); - usb_free_urb(priv->write_urb_pool[j]); - } - } kfree(priv); usb_set_serial_port_data(serial->port[i], NULL); } return -ENOMEM; } -static void klsi_105_disconnect(struct usb_serial *serial) -{ - int i; - - dbg("%s", __func__); - - /* stop reads and writes on all ports */ - for (i = 0; i < serial->num_ports; ++i) { - struct klsi_105_private *priv = - usb_get_serial_port_data(serial->port[i]); - - if (priv) { - /* kill our write urb pool */ - int j; - struct urb **write_urbs = priv->write_urb_pool; - - for (j = 0; j < NUM_URBS; j++) { - if (write_urbs[j]) { - usb_kill_urb(write_urbs[j]); - usb_free_urb(write_urbs[j]); - } - } - } - } -} - static void klsi_105_release(struct usb_serial *serial) { int i; dbg("%s", __func__); - for (i = 0; i < serial->num_ports; ++i) { - struct klsi_105_private *priv = - usb_get_serial_port_data(serial->port[i]); - - kfree(priv); - } + for (i = 0; i < serial->num_ports; ++i) + kfree(usb_get_serial_port_data(serial->port[i])); } static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) @@ -416,18 +334,8 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) spin_unlock_irqrestore(&priv->lock, flags); /* READ_ON and urb submission */ - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - klsi_105_read_bulk_callback, - port); - - rc = usb_submit_urb(port->read_urb, GFP_KERNEL); + rc = usb_serial_generic_open(tty, port); if (rc) { - dev_err(&port->dev, "%s - failed submitting read urb, " - "error %d\n", __func__, rc); retval = rc; goto exit; } @@ -464,7 +372,6 @@ exit: static void klsi_105_close(struct usb_serial_port *port) { - struct klsi_105_private *priv = usb_get_serial_port_data(port); int rc; dbg("%s port %d", __func__, port->number); @@ -487,232 +394,61 @@ static void klsi_105_close(struct usb_serial_port *port) mutex_unlock(&port->serial->disc_mutex); /* shutdown our bulk reads and writes */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); - /* unlink our write pool */ - /* FIXME */ + usb_serial_generic_close(port); + /* wgg - do I need this? I think so. */ usb_kill_urb(port->interrupt_in_urb); - dev_info(&port->serial->dev->dev, - "port stats: %ld bytes in, %ld bytes out\n", - priv->bytes_in, priv->bytes_out); } /* We need to write a complete 64-byte data block and encode the * number actually sent in the first double-byte, LSB-order. That * leaves at most 62 bytes of payload. */ -#define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */ - -static int klsi_105_write(struct tty_struct *tty, - struct usb_serial_port *port, const unsigned char *buf, int count) -{ - struct klsi_105_private *priv = usb_get_serial_port_data(port); - int result, size; - int bytes_sent = 0; - - dbg("%s - port %d", __func__, port->number); - - while (count > 0) { - /* try to find a free urb (write 0 bytes if none) */ - struct urb *urb = NULL; - unsigned long flags; - int i; - /* since the pool is per-port we might not need - the spin lock !? */ - spin_lock_irqsave(&priv->lock, flags); - for (i = 0; i < NUM_URBS; i++) { - if (priv->write_urb_pool[i]->status != -EINPROGRESS) { - urb = priv->write_urb_pool[i]; - dbg("%s - using pool URB %d", __func__, i); - break; - } - } - spin_unlock_irqrestore(&priv->lock, flags); - - if (urb == NULL) { - dbg("%s - no more free urbs", __func__); - goto exit; - } - - if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = - kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); - if (urb->transfer_buffer == NULL) { - dev_err(&port->dev, - "%s - no more kernel memory...\n", - __func__); - goto exit; - } - } - - size = min(count, port->bulk_out_size - KLSI_105_DATA_OFFSET); - size = min(size, URB_TRANSFER_BUFFER_SIZE - - KLSI_105_DATA_OFFSET); - - memcpy(urb->transfer_buffer + KLSI_105_DATA_OFFSET, buf, size); - - /* write payload size into transfer buffer */ - ((__u8 *)urb->transfer_buffer)[0] = (__u8) (size & 0xFF); - ((__u8 *)urb->transfer_buffer)[1] = (__u8) ((size & 0xFF00)>>8); - - /* set up our urb */ - usb_fill_bulk_urb(urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - urb->transfer_buffer, - URB_TRANSFER_BUFFER_SIZE, - klsi_105_write_bulk_callback, - port); - - /* send the data out the bulk port */ - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) { - dev_err(&port->dev, - "%s - failed submitting write urb, error %d\n", - __func__, result); - goto exit; - } - buf += size; - bytes_sent += size; - count -= size; - } -exit: - /* lockless, but it's for debug info only... */ - priv->bytes_out += bytes_sent; - - return bytes_sent; /* that's how much we wrote */ -} - -static void klsi_105_write_bulk_callback(struct urb *urb) +#define KLSI_HDR_LEN 2 +static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, + void *dest, size_t size) { - struct usb_serial_port *port = urb->context; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); + unsigned char *buf = dest; + int count; - if (status) { - dbg("%s - nonzero write bulk status received: %d", __func__, - status); - return; - } + count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, + &port->lock); + put_unaligned_le16(count, buf); - usb_serial_port_softint(port); + return count + KLSI_HDR_LEN; } -/* return number of characters currently in the writing process */ -static int klsi_105_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - int chars = 0; - int i; - unsigned long flags; - struct klsi_105_private *priv = usb_get_serial_port_data(port); - - spin_lock_irqsave(&priv->lock, flags); - - for (i = 0; i < NUM_URBS; ++i) { - if (priv->write_urb_pool[i]->status == -EINPROGRESS) - chars += URB_TRANSFER_BUFFER_SIZE; - } - - spin_unlock_irqrestore(&priv->lock, flags); - - dbg("%s - returns %d", __func__, chars); - return chars; -} - -static int klsi_105_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned long flags; - int i; - int room = 0; - struct klsi_105_private *priv = usb_get_serial_port_data(port); - - spin_lock_irqsave(&priv->lock, flags); - for (i = 0; i < NUM_URBS; ++i) { - if (priv->write_urb_pool[i]->status != -EINPROGRESS) - room += URB_TRANSFER_BUFFER_SIZE; - } - - spin_unlock_irqrestore(&priv->lock, flags); - - dbg("%s - returns %d", __func__, room); - return room; -} - -static void klsi_105_read_bulk_callback(struct urb *urb) +/* The data received is preceded by a length double-byte in LSB-first order. + */ +static void klsi_105_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct klsi_105_private *priv = usb_get_serial_port_data(port); - struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; - int rc; - int status = urb->status; + struct tty_struct *tty; + unsigned len; - dbg("%s - port %d", __func__, port->number); + /* empty urbs seem to happen, we ignore them */ + if (!urb->actual_length) + return; - /* The urb might have been killed. */ - if (status) { - dbg("%s - nonzero read bulk status received: %d", __func__, - status); + if (urb->actual_length <= KLSI_HDR_LEN) { + dbg("%s - malformed packet", __func__); return; } - /* The data received is again preceded by a length double-byte in LSB- - * first order (see klsi_105_write() ) - */ - if (urb->actual_length == 0) { - /* empty urbs seem to happen, we ignore them */ - /* dbg("%s - emtpy URB", __func__); */ - ; - } else if (urb->actual_length <= 2) { - dbg("%s - size %d URB not understood", __func__, - urb->actual_length); - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - } else { - int bytes_sent = ((__u8 *) data)[0] + - ((unsigned int) ((__u8 *) data)[1] << 8); - tty = tty_port_tty_get(&port->port); - /* we should immediately resubmit the URB, before attempting - * to pass the data on to the tty layer. But that needs locking - * against re-entry an then mixed-up data because of - * intermixed tty_flip_buffer_push()s - * FIXME - */ - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - if (bytes_sent + 2 > urb->actual_length) { - dbg("%s - trying to read more data than available" - " (%d vs. %d)", __func__, - bytes_sent+2, urb->actual_length); - /* cap at implied limit */ - bytes_sent = urb->actual_length - 2; - } - - tty_insert_flip_string(tty, data + 2, bytes_sent); - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty = tty_port_tty_get(&port->port); + if (!tty) + return; - /* again lockless, but debug info only */ - priv->bytes_in += bytes_sent; + len = get_unaligned_le16(data); + if (len > urb->actual_length - KLSI_HDR_LEN) { + dbg("%s - packet length mismatch", __func__); + len = urb->actual_length - KLSI_HDR_LEN; } - /* Continue trying to always read */ - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - klsi_105_read_bulk_callback, - port); - rc = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (rc) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, rc); + + tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len); + tty_flip_buffer_push(tty); + tty_kref_put(tty); } static void klsi_105_set_termios(struct tty_struct *tty, @@ -954,28 +690,6 @@ static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file, return retval; } -static void klsi_105_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - dbg("%s - port %d", __func__, port->number); - usb_kill_urb(port->read_urb); -} - -static void klsi_105_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - int result; - - dbg("%s - port %d", __func__, port->number); - - port->read_urb->dev = port->serial->dev; - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, result); -} - static int __init klsi_105_init(void) { -- cgit v1.2.3-58-ga151 From c1aa075acb696c374613fded0380c7ad8a96ebf5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 May 2010 00:01:41 +0200 Subject: USB: ftdi_sio: fix legacy SIO-device header Length field of header was incorrectly set to available payload space rather than the actual payload size. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 97f2d9c1edd6..050211afc07e 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1752,10 +1752,10 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, spin_lock_irqsave(&port->lock, flags); for (i = 0; i < size - 1; i += priv->max_packet_size) { len = min_t(int, size - i, priv->max_packet_size) - 1; - buffer[i] = (len << 2) + 1; c = kfifo_out(&port->write_fifo, &buffer[i + 1], len); if (!c) break; + buffer[i] = (c << 2) + 1; count += c + 1; } spin_unlock_irqrestore(&port->lock, flags); -- cgit v1.2.3-58-ga151 From c4d80b7d5220a65cc4e26173d99d4750895f3e64 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 20 May 2010 01:44:20 +1000 Subject: usb: musb: update gfp/slab.h includes Implicit slab.h inclusion via percpu.h is about to go away. Make sure gfp.h or slab.h is included as necessary. Signed-off-by: Tejun Heo Cc: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_debugfs.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c index 7768634a7576..bba76af0c0c6 100644 --- a/drivers/usb/musb/musb_debugfs.c +++ b/drivers/usb/musb/musb_debugfs.c @@ -34,7 +34,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3-58-ga151