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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-11 10:55:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-11 10:55:49 -0700
commit237f83dfbe668443b5e31c3c7576125871cca674 (patch)
tree11848a8d0aa414a1d3ce2024e181071b1d9dea08 /drivers/isdn/hisax/st5481_b.c
parent8f6ccf6159aed1f04c6d179f61f6fb2691261e84 (diff)
parent1ff2f0fa450ea4e4f87793d9ed513098ec6e12be (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: "Some highlights from this development cycle: 1) Big refactoring of ipv6 route and neigh handling to support nexthop objects configurable as units from userspace. From David Ahern. 2) Convert explored_states in BPF verifier into a hash table, significantly decreased state held for programs with bpf2bpf calls, from Alexei Starovoitov. 3) Implement bpf_send_signal() helper, from Yonghong Song. 4) Various classifier enhancements to mvpp2 driver, from Maxime Chevallier. 5) Add aRFS support to hns3 driver, from Jian Shen. 6) Fix use after free in inet frags by allocating fqdirs dynamically and reworking how rhashtable dismantle occurs, from Eric Dumazet. 7) Add act_ctinfo packet classifier action, from Kevin Darbyshire-Bryant. 8) Add TFO key backup infrastructure, from Jason Baron. 9) Remove several old and unused ISDN drivers, from Arnd Bergmann. 10) Add devlink notifications for flash update status to mlxsw driver, from Jiri Pirko. 11) Lots of kTLS offload infrastructure fixes, from Jakub Kicinski. 12) Add support for mv88e6250 DSA chips, from Rasmus Villemoes. 13) Various enhancements to ipv6 flow label handling, from Eric Dumazet and Willem de Bruijn. 14) Support TLS offload in nfp driver, from Jakub Kicinski, Dirk van der Merwe, and others. 15) Various improvements to axienet driver including converting it to phylink, from Robert Hancock. 16) Add PTP support to sja1105 DSA driver, from Vladimir Oltean. 17) Add mqprio qdisc offload support to dpaa2-eth, from Ioana Radulescu. 18) Add devlink health reporting to mlx5, from Moshe Shemesh. 19) Convert stmmac over to phylink, from Jose Abreu. 20) Add PTP PHC (Physical Hardware Clock) support to mlxsw, from Shalom Toledo. 21) Add nftables SYNPROXY support, from Fernando Fernandez Mancera. 22) Convert tcp_fastopen over to use SipHash, from Ard Biesheuvel. 23) Track spill/fill of constants in BPF verifier, from Alexei Starovoitov. 24) Support bounded loops in BPF, from Alexei Starovoitov. 25) Various page_pool API fixes and improvements, from Jesper Dangaard Brouer. 26) Just like ipv4, support ref-countless ipv6 route handling. From Wei Wang. 27) Support VLAN offloading in aquantia driver, from Igor Russkikh. 28) Add AF_XDP zero-copy support to mlx5, from Maxim Mikityanskiy. 29) Add flower GRE encap/decap support to nfp driver, from Pieter Jansen van Vuuren. 30) Protect against stack overflow when using act_mirred, from John Hurley. 31) Allow devmap map lookups from eBPF, from Toke Høiland-Jørgensen. 32) Use page_pool API in netsec driver, Ilias Apalodimas. 33) Add Google gve network driver, from Catherine Sullivan. 34) More indirect call avoidance, from Paolo Abeni. 35) Add kTLS TX HW offload support to mlx5, from Tariq Toukan. 36) Add XDP_REDIRECT support to bnxt_en, from Andy Gospodarek. 37) Add MPLS manipulation actions to TC, from John Hurley. 38) Add sending a packet to connection tracking from TC actions, and then allow flower classifier matching on conntrack state. From Paul Blakey. 39) Netfilter hw offload support, from Pablo Neira Ayuso" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2080 commits) net/mlx5e: Return in default case statement in tx_post_resync_params mlx5: Return -EINVAL when WARN_ON_ONCE triggers in mlx5e_tls_resync(). net: dsa: add support for BRIDGE_MROUTER attribute pkt_sched: Include const.h net: netsec: remove static declaration for netsec_set_tx_de() net: netsec: remove superfluous if statement netfilter: nf_tables: add hardware offload support net: flow_offload: rename tc_cls_flower_offload to flow_cls_offload net: flow_offload: add flow_block_cb_is_busy() and use it net: sched: remove tcf block API drivers: net: use flow block API net: sched: use flow block API net: flow_offload: add flow_block_cb_{priv, incref, decref}() net: flow_offload: add list handling functions net: flow_offload: add flow_block_cb_alloc() and flow_block_cb_free() net: flow_offload: rename TCF_BLOCK_BINDER_TYPE_* to FLOW_BLOCK_BINDER_TYPE_* net: flow_offload: rename TC_BLOCK_{UN}BIND to FLOW_BLOCK_{UN}BIND net: flow_offload: add flow_block_cb_setup_simple() net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC net: hisilicon: Add an rx_desc to adapt HI13X1_GMAC ...
Diffstat (limited to 'drivers/isdn/hisax/st5481_b.c')
-rw-r--r--drivers/isdn/hisax/st5481_b.c380
1 files changed, 0 insertions, 380 deletions
diff --git a/drivers/isdn/hisax/st5481_b.c b/drivers/isdn/hisax/st5481_b.c
deleted file mode 100644
index f64a36007800..000000000000
--- a/drivers/isdn/hisax/st5481_b.c
+++ /dev/null
@@ -1,380 +0,0 @@
-/*
- * Driver for ST5481 USB ISDN modem
- *
- * Author Frode Isaksen
- * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
- * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-#include <linux/init.h>
-#include <linux/gfp.h>
-#include <linux/usb.h>
-#include <linux/netdevice.h>
-#include <linux/bitrev.h>
-#include "st5481.h"
-
-static inline void B_L1L2(struct st5481_bcs *bcs, int pr, void *arg)
-{
- struct hisax_if *ifc = (struct hisax_if *) &bcs->b_if;
-
- ifc->l1l2(ifc, pr, arg);
-}
-
-/*
- * Encode and transmit next frame.
- */
-static void usb_b_out(struct st5481_bcs *bcs, int buf_nr)
-{
- struct st5481_b_out *b_out = &bcs->b_out;
- struct st5481_adapter *adapter = bcs->adapter;
- struct urb *urb;
- unsigned int packet_size, offset;
- int len, buf_size, bytes_sent;
- int i;
- struct sk_buff *skb;
-
- if (test_and_set_bit(buf_nr, &b_out->busy)) {
- DBG(4, "ep %d urb %d busy", (bcs->channel + 1) * 2, buf_nr);
- return;
- }
- urb = b_out->urb[buf_nr];
-
- // Adjust isoc buffer size according to flow state
- if (b_out->flow_event & (OUT_DOWN | OUT_UNDERRUN)) {
- buf_size = NUM_ISO_PACKETS_B * SIZE_ISO_PACKETS_B_OUT + B_FLOW_ADJUST;
- packet_size = SIZE_ISO_PACKETS_B_OUT + B_FLOW_ADJUST;
- DBG(4, "B%d,adjust flow,add %d bytes", bcs->channel + 1, B_FLOW_ADJUST);
- } else if (b_out->flow_event & OUT_UP) {
- buf_size = NUM_ISO_PACKETS_B * SIZE_ISO_PACKETS_B_OUT - B_FLOW_ADJUST;
- packet_size = SIZE_ISO_PACKETS_B_OUT - B_FLOW_ADJUST;
- DBG(4, "B%d,adjust flow,remove %d bytes", bcs->channel + 1, B_FLOW_ADJUST);
- } else {
- buf_size = NUM_ISO_PACKETS_B * SIZE_ISO_PACKETS_B_OUT;
- packet_size = 8;
- }
- b_out->flow_event = 0;
-
- len = 0;
- while (len < buf_size) {
- if ((skb = b_out->tx_skb)) {
- DBG_SKB(0x100, skb);
- DBG(4, "B%d,len=%d", bcs->channel + 1, skb->len);
-
- if (bcs->mode == L1_MODE_TRANS) {
- bytes_sent = buf_size - len;
- if (skb->len < bytes_sent)
- bytes_sent = skb->len;
- { /* swap tx bytes to get hearable audio data */
- register unsigned char *src = skb->data;
- register unsigned char *dest = urb->transfer_buffer + len;
- register unsigned int count;
- for (count = 0; count < bytes_sent; count++)
- *dest++ = bitrev8(*src++);
- }
- len += bytes_sent;
- } else {
- len += isdnhdlc_encode(&b_out->hdlc_state,
- skb->data, skb->len, &bytes_sent,
- urb->transfer_buffer + len, buf_size-len);
- }
-
- skb_pull(skb, bytes_sent);
-
- if (!skb->len) {
- // Frame sent
- b_out->tx_skb = NULL;
- B_L1L2(bcs, PH_DATA | CONFIRM, (void *)(unsigned long) skb->truesize);
- dev_kfree_skb_any(skb);
-
-/* if (!(bcs->tx_skb = skb_dequeue(&bcs->sq))) { */
-/* st5481B_sched_event(bcs, B_XMTBUFREADY); */
-/* } */
- }
- } else {
- if (bcs->mode == L1_MODE_TRANS) {
- memset(urb->transfer_buffer + len, 0xff, buf_size-len);
- len = buf_size;
- } else {
- // Send flags
- len += isdnhdlc_encode(&b_out->hdlc_state,
- NULL, 0, &bytes_sent,
- urb->transfer_buffer + len, buf_size-len);
- }
- }
- }
-
- // Prepare the URB
- for (i = 0, offset = 0; offset < len; i++) {
- urb->iso_frame_desc[i].offset = offset;
- urb->iso_frame_desc[i].length = packet_size;
- offset += packet_size;
- packet_size = SIZE_ISO_PACKETS_B_OUT;
- }
- urb->transfer_buffer_length = len;
- urb->number_of_packets = i;
- urb->dev = adapter->usb_dev;
-
- DBG_ISO_PACKET(0x200, urb);
-
- SUBMIT_URB(urb, GFP_NOIO);
-}
-
-/*
- * Start transferring (flags or data) on the B channel, since
- * FIFO counters has been set to a non-zero value.
- */
-static void st5481B_start_xfer(void *context)
-{
- struct st5481_bcs *bcs = context;
-
- DBG(4, "B%d", bcs->channel + 1);
-
- // Start transmitting (flags or data) on B channel
-
- usb_b_out(bcs, 0);
- usb_b_out(bcs, 1);
-}
-
-/*
- * If the adapter has only 2 LEDs, the green
- * LED will blink with a rate depending
- * on the number of channels opened.
- */
-static void led_blink(struct st5481_adapter *adapter)
-{
- u_char leds = adapter->leds;
-
- // 50 frames/sec for each channel
- if (++adapter->led_counter % 50) {
- return;
- }
-
- if (adapter->led_counter % 100) {
- leds |= GREEN_LED;
- } else {
- leds &= ~GREEN_LED;
- }
-
- st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, leds, NULL, NULL);
-}
-
-static void usb_b_out_complete(struct urb *urb)
-{
- struct st5481_bcs *bcs = urb->context;
- struct st5481_b_out *b_out = &bcs->b_out;
- struct st5481_adapter *adapter = bcs->adapter;
- int buf_nr;
-
- buf_nr = get_buf_nr(b_out->urb, urb);
- test_and_clear_bit(buf_nr, &b_out->busy);
-
- if (unlikely(urb->status < 0)) {
- switch (urb->status) {
- case -ENOENT:
- case -ESHUTDOWN:
- case -ECONNRESET:
- DBG(4, "urb killed status %d", urb->status);
- return; // Give up
- default:
- WARNING("urb status %d", urb->status);
- if (b_out->busy == 0) {
- st5481_usb_pipe_reset(adapter, (bcs->channel + 1) * 2 | USB_DIR_OUT, NULL, NULL);
- }
- break;
- }
- }
-
- usb_b_out(bcs, buf_nr);
-
- if (adapter->number_of_leds == 2)
- led_blink(adapter);
-}
-
-/*
- * Start or stop the transfer on the B channel.
- */
-static void st5481B_mode(struct st5481_bcs *bcs, int mode)
-{
- struct st5481_b_out *b_out = &bcs->b_out;
- struct st5481_adapter *adapter = bcs->adapter;
-
- DBG(4, "B%d,mode=%d", bcs->channel + 1, mode);
-
- if (bcs->mode == mode)
- return;
-
- bcs->mode = mode;
-
- // Cancel all USB transfers on this B channel
- usb_unlink_urb(b_out->urb[0]);
- usb_unlink_urb(b_out->urb[1]);
- b_out->busy = 0;
-
- st5481_in_mode(&bcs->b_in, mode);
- if (bcs->mode != L1_MODE_NULL) {
- // Open the B channel
- if (bcs->mode != L1_MODE_TRANS) {
- u32 features = HDLC_BITREVERSE;
- if (bcs->mode == L1_MODE_HDLC_56K)
- features |= HDLC_56KBIT;
- isdnhdlc_out_init(&b_out->hdlc_state, features);
- }
- st5481_usb_pipe_reset(adapter, (bcs->channel + 1) * 2, NULL, NULL);
-
- // Enable B channel interrupts
- st5481_usb_device_ctrl_msg(adapter, FFMSK_B1 + (bcs->channel * 2),
- OUT_UP + OUT_DOWN + OUT_UNDERRUN, NULL, NULL);
-
- // Enable B channel FIFOs
- st5481_usb_device_ctrl_msg(adapter, OUT_B1_COUNTER+(bcs->channel * 2), 32, st5481B_start_xfer, bcs);
- if (adapter->number_of_leds == 4) {
- if (bcs->channel == 0) {
- adapter->leds |= B1_LED;
- } else {
- adapter->leds |= B2_LED;
- }
- }
- } else {
- // Disable B channel interrupts
- st5481_usb_device_ctrl_msg(adapter, FFMSK_B1+(bcs->channel * 2), 0, NULL, NULL);
-
- // Disable B channel FIFOs
- st5481_usb_device_ctrl_msg(adapter, OUT_B1_COUNTER+(bcs->channel * 2), 0, NULL, NULL);
-
- if (adapter->number_of_leds == 4) {
- if (bcs->channel == 0) {
- adapter->leds &= ~B1_LED;
- } else {
- adapter->leds &= ~B2_LED;
- }
- } else {
- st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL);
- }
- if (b_out->tx_skb) {
- dev_kfree_skb_any(b_out->tx_skb);
- b_out->tx_skb = NULL;
- }
-
- }
-}
-
-static int st5481_setup_b_out(struct st5481_bcs *bcs)
-{
- struct usb_device *dev = bcs->adapter->usb_dev;
- struct usb_interface *intf;
- struct usb_host_interface *altsetting = NULL;
- struct usb_host_endpoint *endpoint;
- struct st5481_b_out *b_out = &bcs->b_out;
-
- DBG(4, "");
-
- intf = usb_ifnum_to_if(dev, 0);
- if (intf)
- altsetting = usb_altnum_to_altsetting(intf, 3);
- if (!altsetting)
- return -ENXIO;
-
- // Allocate URBs and buffers for the B channel out
- endpoint = &altsetting->endpoint[EP_B1_OUT - 1 + bcs->channel * 2];
-
- DBG(4, "endpoint address=%02x,packet size=%d",
- endpoint->desc.bEndpointAddress, le16_to_cpu(endpoint->desc.wMaxPacketSize));
-
- // Allocate memory for 8000bytes/sec + extra bytes if underrun
- return st5481_setup_isocpipes(b_out->urb, dev,
- usb_sndisocpipe(dev, endpoint->desc.bEndpointAddress),
- NUM_ISO_PACKETS_B, SIZE_ISO_PACKETS_B_OUT,
- NUM_ISO_PACKETS_B * SIZE_ISO_PACKETS_B_OUT + B_FLOW_ADJUST,
- usb_b_out_complete, bcs);
-}
-
-static void st5481_release_b_out(struct st5481_bcs *bcs)
-{
- struct st5481_b_out *b_out = &bcs->b_out;
-
- DBG(4, "");
-
- st5481_release_isocpipes(b_out->urb);
-}
-
-int st5481_setup_b(struct st5481_bcs *bcs)
-{
- int retval;
-
- DBG(4, "");
-
- retval = st5481_setup_b_out(bcs);
- if (retval)
- goto err;
- bcs->b_in.bufsize = HSCX_BUFMAX;
- bcs->b_in.num_packets = NUM_ISO_PACKETS_B;
- bcs->b_in.packet_size = SIZE_ISO_PACKETS_B_IN;
- bcs->b_in.ep = (bcs->channel ? EP_B2_IN : EP_B1_IN) | USB_DIR_IN;
- bcs->b_in.counter = bcs->channel ? IN_B2_COUNTER : IN_B1_COUNTER;
- bcs->b_in.adapter = bcs->adapter;
- bcs->b_in.hisax_if = &bcs->b_if.ifc;
- retval = st5481_setup_in(&bcs->b_in);
- if (retval)
- goto err_b_out;
-
-
- return 0;
-
-err_b_out:
- st5481_release_b_out(bcs);
-err:
- return retval;
-}
-
-/*
- * Release buffers and URBs for the B channels
- */
-void st5481_release_b(struct st5481_bcs *bcs)
-{
- DBG(4, "");
-
- st5481_release_in(&bcs->b_in);
- st5481_release_b_out(bcs);
-}
-
-/*
- * st5481_b_l2l1 is the entry point for upper layer routines that want to
- * transmit on the B channel. PH_DATA | REQUEST is a normal packet that
- * we either start transmitting (if idle) or queue (if busy).
- * PH_PULL | REQUEST can be called to request a callback message
- * (PH_PULL | CONFIRM)
- * once the link is idle. After a "pull" callback, the upper layer
- * routines can use PH_PULL | INDICATION to send data.
- */
-void st5481_b_l2l1(struct hisax_if *ifc, int pr, void *arg)
-{
- struct st5481_bcs *bcs = ifc->priv;
- struct sk_buff *skb = arg;
- long mode;
-
- DBG(4, "");
-
- switch (pr) {
- case PH_DATA | REQUEST:
- BUG_ON(bcs->b_out.tx_skb);
- bcs->b_out.tx_skb = skb;
- break;
- case PH_ACTIVATE | REQUEST:
- mode = (long) arg;
- DBG(4, "B%d,PH_ACTIVATE_REQUEST %ld", bcs->channel + 1, mode);
- st5481B_mode(bcs, mode);
- B_L1L2(bcs, PH_ACTIVATE | INDICATION, NULL);
- break;
- case PH_DEACTIVATE | REQUEST:
- DBG(4, "B%d,PH_DEACTIVATE_REQUEST", bcs->channel + 1);
- st5481B_mode(bcs, L1_MODE_NULL);
- B_L1L2(bcs, PH_DEACTIVATE | INDICATION, NULL);
- break;
- default:
- WARNING("pr %#x\n", pr);
- }
-}