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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-05-18 05:14:22 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-11 16:29:21 -0700
commitd9fb9f384292d848ad9db386bcf97f1e06e60264 (patch)
tree128d65c7255f188ec7d4cea4fa637c700bcb5828 /drivers/net/ns83820.c
parent8fb6b0908176704a3ea22005e8a9fa3ebf35b5be (diff)
*sonic/natsemi/ns83829: Move the National Semi-conductor drivers
Move the National Semi-conductor drivers into drivers/net/ethernet/natsemi/ and make the necessary Kconfig and Makefile changes. Also moved the 8390 (National Semi-conductor) devices as a sub-menu of National Semi-conductor devices. - moved the ibmlana driver as well into this directory since it is a "SONIC" driver CC: Alfred Arnold <alfred.arnold@lancom.de> CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de> CC: Harald Welte <laforge@gnumonks.org> CC: Tim Hockin <thockin@hockin.org> CC: <linux-ns83820@kvack.org> CC: Kevin Chea <kchea@yahoo.com> CC: Marc Gauthier <marc@linux-xtensa.org> CC: Chris Zankel <chris@zankel.net> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Acked-by: Marc Gauthier <marc@tensilica.com>
Diffstat (limited to 'drivers/net/ns83820.c')
-rw-r--r--drivers/net/ns83820.c2312
1 files changed, 0 insertions, 2312 deletions
diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c
deleted file mode 100644
index e736aec588fc..000000000000
--- a/drivers/net/ns83820.c
+++ /dev/null
@@ -1,2312 +0,0 @@
-#define VERSION "0.23"
-/* ns83820.c by Benjamin LaHaise with contributions.
- *
- * Questions/comments/discussion to linux-ns83820@kvack.org.
- *
- * $Revision: 1.34.2.23 $
- *
- * Copyright 2001 Benjamin LaHaise.
- * Copyright 2001, 2002 Red Hat.
- *
- * Mmmm, chocolate vanilla mocha...
- *
- *
- * 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
- *
- *
- * ChangeLog
- * =========
- * 20010414 0.1 - created
- * 20010622 0.2 - basic rx and tx.
- * 20010711 0.3 - added duplex and link state detection support.
- * 20010713 0.4 - zero copy, no hangs.
- * 0.5 - 64 bit dma support (davem will hate me for this)
- * - disable jumbo frames to avoid tx hangs
- * - work around tx deadlocks on my 1.02 card via
- * fiddling with TXCFG
- * 20010810 0.6 - use pci dma api for ringbuffers, work on ia64
- * 20010816 0.7 - misc cleanups
- * 20010826 0.8 - fix critical zero copy bugs
- * 0.9 - internal experiment
- * 20010827 0.10 - fix ia64 unaligned access.
- * 20010906 0.11 - accept all packets with checksum errors as
- * otherwise fragments get lost
- * - fix >> 32 bugs
- * 0.12 - add statistics counters
- * - add allmulti/promisc support
- * 20011009 0.13 - hotplug support, other smaller pci api cleanups
- * 20011204 0.13a - optical transceiver support added
- * by Michael Clark <michael@metaparadigm.com>
- * 20011205 0.13b - call register_netdev earlier in initialization
- * suppress duplicate link status messages
- * 20011117 0.14 - ethtool GDRVINFO, GLINK support from jgarzik
- * 20011204 0.15 get ppc (big endian) working
- * 20011218 0.16 various cleanups
- * 20020310 0.17 speedups
- * 20020610 0.18 - actually use the pci dma api for highmem
- * - remove pci latency register fiddling
- * 0.19 - better bist support
- * - add ihr and reset_phy parameters
- * - gmii bus probing
- * - fix missed txok introduced during performance
- * tuning
- * 0.20 - fix stupid RFEN thinko. i am such a smurf.
- * 20040828 0.21 - add hardware vlan accleration
- * by Neil Horman <nhorman@redhat.com>
- * 20050406 0.22 - improved DAC ifdefs from Andi Kleen
- * - removal of dead code from Adrian Bunk
- * - fix half duplex collision behaviour
- * Driver Overview
- * ===============
- *
- * This driver was originally written for the National Semiconductor
- * 83820 chip, a 10/100/1000 Mbps 64 bit PCI ethernet NIC. Hopefully
- * this code will turn out to be a) clean, b) correct, and c) fast.
- * With that in mind, I'm aiming to split the code up as much as
- * reasonably possible. At present there are X major sections that
- * break down into a) packet receive, b) packet transmit, c) link
- * management, d) initialization and configuration. Where possible,
- * these code paths are designed to run in parallel.
- *
- * This driver has been tested and found to work with the following
- * cards (in no particular order):
- *
- * Cameo SOHO-GA2000T SOHO-GA2500T
- * D-Link DGE-500T
- * PureData PDP8023Z-TG
- * SMC SMC9452TX SMC9462TX
- * Netgear GA621
- *
- * Special thanks to SMC for providing hardware to test this driver on.
- *
- * Reports of success or failure would be greatly appreciated.
- */
-//#define dprintk printk
-#define dprintk(x...) do { } while (0)
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/dma-mapping.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-#include <linux/workqueue.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ip.h> /* for iph */
-#include <linux/in.h> /* for IPPROTO_... */
-#include <linux/compiler.h>
-#include <linux/prefetch.h>
-#include <linux/ethtool.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/if_vlan.h>
-#include <linux/rtnetlink.h>
-#include <linux/jiffies.h>
-#include <linux/slab.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#define DRV_NAME "ns83820"
-
-/* Global parameters. See module_param near the bottom. */
-static int ihr = 2;
-static int reset_phy = 0;
-static int lnksts = 0; /* CFG_LNKSTS bit polarity */
-
-/* Dprintk is used for more interesting debug events */
-#undef Dprintk
-#define Dprintk dprintk
-
-/* tunables */
-#define RX_BUF_SIZE 1500 /* 8192 */
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-#define NS83820_VLAN_ACCEL_SUPPORT
-#endif
-
-/* Must not exceed ~65000. */
-#define NR_RX_DESC 64
-#define NR_TX_DESC 128
-
-/* not tunable */
-#define REAL_RX_BUF_SIZE (RX_BUF_SIZE + 14) /* rx/tx mac addr + type */
-
-#define MIN_TX_DESC_FREE 8
-
-/* register defines */
-#define CFGCS 0x04
-
-#define CR_TXE 0x00000001
-#define CR_TXD 0x00000002
-/* Ramit : Here's a tip, don't do a RXD immediately followed by an RXE
- * The Receive engine skips one descriptor and moves
- * onto the next one!! */
-#define CR_RXE 0x00000004
-#define CR_RXD 0x00000008
-#define CR_TXR 0x00000010
-#define CR_RXR 0x00000020
-#define CR_SWI 0x00000080
-#define CR_RST 0x00000100
-
-#define PTSCR_EEBIST_FAIL 0x00000001
-#define PTSCR_EEBIST_EN 0x00000002
-#define PTSCR_EELOAD_EN 0x00000004
-#define PTSCR_RBIST_FAIL 0x000001b8
-#define PTSCR_RBIST_DONE 0x00000200
-#define PTSCR_RBIST_EN 0x00000400
-#define PTSCR_RBIST_RST 0x00002000
-
-#define MEAR_EEDI 0x00000001
-#define MEAR_EEDO 0x00000002
-#define MEAR_EECLK 0x00000004
-#define MEAR_EESEL 0x00000008
-#define MEAR_MDIO 0x00000010
-#define MEAR_MDDIR 0x00000020
-#define MEAR_MDC 0x00000040
-
-#define ISR_TXDESC3 0x40000000
-#define ISR_TXDESC2 0x20000000
-#define ISR_TXDESC1 0x10000000
-#define ISR_TXDESC0 0x08000000
-#define ISR_RXDESC3 0x04000000
-#define ISR_RXDESC2 0x02000000
-#define ISR_RXDESC1 0x01000000
-#define ISR_RXDESC0 0x00800000
-#define ISR_TXRCMP 0x00400000
-#define ISR_RXRCMP 0x00200000
-#define ISR_DPERR 0x00100000
-#define ISR_SSERR 0x00080000
-#define ISR_RMABT 0x00040000
-#define ISR_RTABT 0x00020000
-#define ISR_RXSOVR 0x00010000
-#define ISR_HIBINT 0x00008000
-#define ISR_PHY 0x00004000
-#define ISR_PME 0x00002000
-#define ISR_SWI 0x00001000
-#define ISR_MIB 0x00000800
-#define ISR_TXURN 0x00000400
-#define ISR_TXIDLE 0x00000200
-#define ISR_TXERR 0x00000100
-#define ISR_TXDESC 0x00000080
-#define ISR_TXOK 0x00000040
-#define ISR_RXORN 0x00000020
-#define ISR_RXIDLE 0x00000010
-#define ISR_RXEARLY 0x00000008
-#define ISR_RXERR 0x00000004
-#define ISR_RXDESC 0x00000002
-#define ISR_RXOK 0x00000001
-
-#define TXCFG_CSI 0x80000000
-#define TXCFG_HBI 0x40000000
-#define TXCFG_MLB 0x20000000
-#define TXCFG_ATP 0x10000000
-#define TXCFG_ECRETRY 0x00800000
-#define TXCFG_BRST_DIS 0x00080000
-#define TXCFG_MXDMA1024 0x00000000
-#define TXCFG_MXDMA512 0x00700000
-#define TXCFG_MXDMA256 0x00600000
-#define TXCFG_MXDMA128 0x00500000
-#define TXCFG_MXDMA64 0x00400000
-#define TXCFG_MXDMA32 0x00300000
-#define TXCFG_MXDMA16 0x00200000
-#define TXCFG_MXDMA8 0x00100000
-
-#define CFG_LNKSTS 0x80000000
-#define CFG_SPDSTS 0x60000000
-#define CFG_SPDSTS1 0x40000000
-#define CFG_SPDSTS0 0x20000000
-#define CFG_DUPSTS 0x10000000
-#define CFG_TBI_EN 0x01000000
-#define CFG_MODE_1000 0x00400000
-/* Ramit : Dont' ever use AUTO_1000, it never works and is buggy.
- * Read the Phy response and then configure the MAC accordingly */
-#define CFG_AUTO_1000 0x00200000
-#define CFG_PINT_CTL 0x001c0000
-#define CFG_PINT_DUPSTS 0x00100000
-#define CFG_PINT_LNKSTS 0x00080000
-#define CFG_PINT_SPDSTS 0x00040000
-#define CFG_TMRTEST 0x00020000
-#define CFG_MRM_DIS 0x00010000
-#define CFG_MWI_DIS 0x00008000
-#define CFG_T64ADDR 0x00004000
-#define CFG_PCI64_DET 0x00002000
-#define CFG_DATA64_EN 0x00001000
-#define CFG_M64ADDR 0x00000800
-#define CFG_PHY_RST 0x00000400
-#define CFG_PHY_DIS 0x00000200
-#define CFG_EXTSTS_EN 0x00000100
-#define CFG_REQALG 0x00000080
-#define CFG_SB 0x00000040
-#define CFG_POW 0x00000020
-#define CFG_EXD 0x00000010
-#define CFG_PESEL 0x00000008
-#define CFG_BROM_DIS 0x00000004
-#define CFG_EXT_125 0x00000002
-#define CFG_BEM 0x00000001
-
-#define EXTSTS_UDPPKT 0x00200000
-#define EXTSTS_TCPPKT 0x00080000
-#define EXTSTS_IPPKT 0x00020000
-#define EXTSTS_VPKT 0x00010000
-#define EXTSTS_VTG_MASK 0x0000ffff
-
-#define SPDSTS_POLARITY (CFG_SPDSTS1 | CFG_SPDSTS0 | CFG_DUPSTS | (lnksts ? CFG_LNKSTS : 0))
-
-#define MIBC_MIBS 0x00000008
-#define MIBC_ACLR 0x00000004
-#define MIBC_FRZ 0x00000002
-#define MIBC_WRN 0x00000001
-
-#define PCR_PSEN (1 << 31)
-#define PCR_PS_MCAST (1 << 30)
-#define PCR_PS_DA (1 << 29)
-#define PCR_STHI_8 (3 << 23)
-#define PCR_STLO_4 (1 << 23)
-#define PCR_FFHI_8K (3 << 21)
-#define PCR_FFLO_4K (1 << 21)
-#define PCR_PAUSE_CNT 0xFFFE
-
-#define RXCFG_AEP 0x80000000
-#define RXCFG_ARP 0x40000000
-#define RXCFG_STRIPCRC 0x20000000
-#define RXCFG_RX_FD 0x10000000
-#define RXCFG_ALP 0x08000000
-#define RXCFG_AIRL 0x04000000
-#define RXCFG_MXDMA512 0x00700000
-#define RXCFG_DRTH 0x0000003e
-#define RXCFG_DRTH0 0x00000002
-
-#define RFCR_RFEN 0x80000000
-#define RFCR_AAB 0x40000000
-#define RFCR_AAM 0x20000000
-#define RFCR_AAU 0x10000000
-#define RFCR_APM 0x08000000
-#define RFCR_APAT 0x07800000
-#define RFCR_APAT3 0x04000000
-#define RFCR_APAT2 0x02000000
-#define RFCR_APAT1 0x01000000
-#define RFCR_APAT0 0x00800000
-#define RFCR_AARP 0x00400000
-#define RFCR_MHEN 0x00200000
-#define RFCR_UHEN 0x00100000
-#define RFCR_ULM 0x00080000
-
-#define VRCR_RUDPE 0x00000080
-#define VRCR_RTCPE 0x00000040
-#define VRCR_RIPE 0x00000020
-#define VRCR_IPEN 0x00000010
-#define VRCR_DUTF 0x00000008
-#define VRCR_DVTF 0x00000004
-#define VRCR_VTREN 0x00000002
-#define VRCR_VTDEN 0x00000001
-
-#define VTCR_PPCHK 0x00000008
-#define VTCR_GCHK 0x00000004
-#define VTCR_VPPTI 0x00000002
-#define VTCR_VGTI 0x00000001
-
-#define CR 0x00
-#define CFG 0x04
-#define MEAR 0x08
-#define PTSCR 0x0c
-#define ISR 0x10
-#define IMR 0x14
-#define IER 0x18
-#define IHR 0x1c
-#define TXDP 0x20
-#define TXDP_HI 0x24
-#define TXCFG 0x28
-#define GPIOR 0x2c
-#define RXDP 0x30
-#define RXDP_HI 0x34
-#define RXCFG 0x38
-#define PQCR 0x3c
-#define WCSR 0x40
-#define PCR 0x44
-#define RFCR 0x48
-#define RFDR 0x4c
-
-#define SRR 0x58
-
-#define VRCR 0xbc
-#define VTCR 0xc0
-#define VDR 0xc4
-#define CCSR 0xcc
-
-#define TBICR 0xe0
-#define TBISR 0xe4
-#define TANAR 0xe8
-#define TANLPAR 0xec
-#define TANER 0xf0
-#define TESR 0xf4
-
-#define TBICR_MR_AN_ENABLE 0x00001000
-#define TBICR_MR_RESTART_AN 0x00000200
-
-#define TBISR_MR_LINK_STATUS 0x00000020
-#define TBISR_MR_AN_COMPLETE 0x00000004
-
-#define TANAR_PS2 0x00000100
-#define TANAR_PS1 0x00000080
-#define TANAR_HALF_DUP 0x00000040
-#define TANAR_FULL_DUP 0x00000020
-
-#define GPIOR_GP5_OE 0x00000200
-#define GPIOR_GP4_OE 0x00000100
-#define GPIOR_GP3_OE 0x00000080
-#define GPIOR_GP2_OE 0x00000040
-#define GPIOR_GP1_OE 0x00000020
-#define GPIOR_GP3_OUT 0x00000004
-#define GPIOR_GP1_OUT 0x00000001
-
-#define LINK_AUTONEGOTIATE 0x01
-#define LINK_DOWN 0x02
-#define LINK_UP 0x04
-
-#define HW_ADDR_LEN sizeof(dma_addr_t)
-#define desc_addr_set(desc, addr) \
- do { \
- ((desc)[0] = cpu_to_le32(addr)); \
- if (HW_ADDR_LEN == 8) \
- (desc)[1] = cpu_to_le32(((u64)addr) >> 32); \
- } while(0)
-#define desc_addr_get(desc) \
- (le32_to_cpu((desc)[0]) | \
- (HW_ADDR_LEN == 8 ? ((dma_addr_t)le32_to_cpu((desc)[1]))<<32 : 0))
-
-#define DESC_LINK 0
-#define DESC_BUFPTR (DESC_LINK + HW_ADDR_LEN/4)
-#define DESC_CMDSTS (DESC_BUFPTR + HW_ADDR_LEN/4)
-#define DESC_EXTSTS (DESC_CMDSTS + 4/4)
-
-#define CMDSTS_OWN 0x80000000
-#define CMDSTS_MORE 0x40000000
-#define CMDSTS_INTR 0x20000000
-#define CMDSTS_ERR 0x10000000
-#define CMDSTS_OK 0x08000000
-#define CMDSTS_RUNT 0x00200000
-#define CMDSTS_LEN_MASK 0x0000ffff
-
-#define CMDSTS_DEST_MASK 0x01800000
-#define CMDSTS_DEST_SELF 0x00800000
-#define CMDSTS_DEST_MULTI 0x01000000
-
-#define DESC_SIZE 8 /* Should be cache line sized */
-
-struct rx_info {
- spinlock_t lock;
- int up;
- unsigned long idle;
-
- struct sk_buff *skbs[NR_RX_DESC];
-
- __le32 *next_rx_desc;
- u16 next_rx, next_empty;
-
- __le32 *descs;
- dma_addr_t phy_descs;
-};
-
-
-struct ns83820 {
- u8 __iomem *base;
-
- struct pci_dev *pci_dev;
- struct net_device *ndev;
-
- struct rx_info rx_info;
- struct tasklet_struct rx_tasklet;
-
- unsigned ihr;
- struct work_struct tq_refill;
-
- /* protects everything below. irqsave when using. */
- spinlock_t misc_lock;
-
- u32 CFG_cache;
-
- u32 MEAR_cache;
- u32 IMR_cache;
-
- unsigned linkstate;
-
- spinlock_t tx_lock;
-
- u16 tx_done_idx;
- u16 tx_idx;
- volatile u16 tx_free_idx; /* idx of free desc chain */
- u16 tx_intr_idx;
-
- atomic_t nr_tx_skbs;
- struct sk_buff *tx_skbs[NR_TX_DESC];
-
- char pad[16] __attribute__((aligned(16)));
- __le32 *tx_descs;
- dma_addr_t tx_phy_descs;
-
- struct timer_list tx_watchdog;
-};
-
-static inline struct ns83820 *PRIV(struct net_device *dev)
-{
- return netdev_priv(dev);
-}
-
-#define __kick_rx(dev) writel(CR_RXE, dev->base + CR)
-
-static inline void kick_rx(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- dprintk("kick_rx: maybe kicking\n");
- if (test_and_clear_bit(0, &dev->rx_info.idle)) {
- dprintk("actually kicking\n");
- writel(dev->rx_info.phy_descs +
- (4 * DESC_SIZE * dev->rx_info.next_rx),
- dev->base + RXDP);
- if (dev->rx_info.next_rx == dev->rx_info.next_empty)
- printk(KERN_DEBUG "%s: uh-oh: next_rx == next_empty???\n",
- ndev->name);
- __kick_rx(dev);
- }
-}
-
-//free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC
-#define start_tx_okay(dev) \
- (((NR_TX_DESC-2 + dev->tx_done_idx - dev->tx_free_idx) % NR_TX_DESC) > MIN_TX_DESC_FREE)
-
-/* Packet Receiver
- *
- * The hardware supports linked lists of receive descriptors for
- * which ownership is transferred back and forth by means of an
- * ownership bit. While the hardware does support the use of a
- * ring for receive descriptors, we only make use of a chain in
- * an attempt to reduce bus traffic under heavy load scenarios.
- * This will also make bugs a bit more obvious. The current code
- * only makes use of a single rx chain; I hope to implement
- * priority based rx for version 1.0. Goal: even under overload
- * conditions, still route realtime traffic with as low jitter as
- * possible.
- */
-static inline void build_rx_desc(struct ns83820 *dev, __le32 *desc, dma_addr_t link, dma_addr_t buf, u32 cmdsts, u32 extsts)
-{
- desc_addr_set(desc + DESC_LINK, link);
- desc_addr_set(desc + DESC_BUFPTR, buf);
- desc[DESC_EXTSTS] = cpu_to_le32(extsts);
- mb();
- desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
-}
-
-#define nr_rx_empty(dev) ((NR_RX_DESC-2 + dev->rx_info.next_rx - dev->rx_info.next_empty) % NR_RX_DESC)
-static inline int ns83820_add_rx_skb(struct ns83820 *dev, struct sk_buff *skb)
-{
- unsigned next_empty;
- u32 cmdsts;
- __le32 *sg;
- dma_addr_t buf;
-
- next_empty = dev->rx_info.next_empty;
-
- /* don't overrun last rx marker */
- if (unlikely(nr_rx_empty(dev) <= 2)) {
- kfree_skb(skb);
- return 1;
- }
-
-#if 0
- dprintk("next_empty[%d] nr_used[%d] next_rx[%d]\n",
- dev->rx_info.next_empty,
- dev->rx_info.nr_used,
- dev->rx_info.next_rx
- );
-#endif
-
- sg = dev->rx_info.descs + (next_empty * DESC_SIZE);
- BUG_ON(NULL != dev->rx_info.skbs[next_empty]);
- dev->rx_info.skbs[next_empty] = skb;
-
- dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
- cmdsts = REAL_RX_BUF_SIZE | CMDSTS_INTR;
- buf = pci_map_single(dev->pci_dev, skb->data,
- REAL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- build_rx_desc(dev, sg, 0, buf, cmdsts, 0);
- /* update link of previous rx */
- if (likely(next_empty != dev->rx_info.next_rx))
- dev->rx_info.descs[((NR_RX_DESC + next_empty - 1) % NR_RX_DESC) * DESC_SIZE] = cpu_to_le32(dev->rx_info.phy_descs + (next_empty * DESC_SIZE * 4));
-
- return 0;
-}
-
-static inline int rx_refill(struct net_device *ndev, gfp_t gfp)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- unsigned long flags = 0;
-
- if (unlikely(nr_rx_empty(dev) <= 2))
- return 0;
-
- dprintk("rx_refill(%p)\n", ndev);
- if (gfp == GFP_ATOMIC)
- spin_lock_irqsave(&dev->rx_info.lock, flags);
- for (i=0; i<NR_RX_DESC; i++) {
- struct sk_buff *skb;
- long res;
-
- /* extra 16 bytes for alignment */
- skb = __netdev_alloc_skb(ndev, REAL_RX_BUF_SIZE+16, gfp);
- if (unlikely(!skb))
- break;
-
- skb_reserve(skb, skb->data - PTR_ALIGN(skb->data, 16));
- if (gfp != GFP_ATOMIC)
- spin_lock_irqsave(&dev->rx_info.lock, flags);
- res = ns83820_add_rx_skb(dev, skb);
- if (gfp != GFP_ATOMIC)
- spin_unlock_irqrestore(&dev->rx_info.lock, flags);
- if (res) {
- i = 1;
- break;
- }
- }
- if (gfp == GFP_ATOMIC)
- spin_unlock_irqrestore(&dev->rx_info.lock, flags);
-
- return i ? 0 : -ENOMEM;
-}
-
-static void rx_refill_atomic(struct net_device *ndev)
-{
- rx_refill(ndev, GFP_ATOMIC);
-}
-
-/* REFILL */
-static inline void queue_refill(struct work_struct *work)
-{
- struct ns83820 *dev = container_of(work, struct ns83820, tq_refill);
- struct net_device *ndev = dev->ndev;
-
- rx_refill(ndev, GFP_KERNEL);
- if (dev->rx_info.up)
- kick_rx(ndev);
-}
-
-static inline void clear_rx_desc(struct ns83820 *dev, unsigned i)
-{
- build_rx_desc(dev, dev->rx_info.descs + (DESC_SIZE * i), 0, 0, CMDSTS_OWN, 0);
-}
-
-static void phy_intr(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- static const char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
- u32 cfg, new_cfg;
- u32 tbisr, tanar, tanlpar;
- int speed, fullduplex, newlinkstate;
-
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have an optical transceiver */
- tbisr = readl(dev->base + TBISR);
- tanar = readl(dev->base + TANAR);
- tanlpar = readl(dev->base + TANLPAR);
- dprintk("phy_intr: tbisr=%08x, tanar=%08x, tanlpar=%08x\n",
- tbisr, tanar, tanlpar);
-
- if ( (fullduplex = (tanlpar & TANAR_FULL_DUP) &&
- (tanar & TANAR_FULL_DUP)) ) {
-
- /* both of us are full duplex */
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Light up full duplex LED */
- writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
- dev->base + GPIOR);
-
- } else if (((tanlpar & TANAR_HALF_DUP) &&
- (tanar & TANAR_HALF_DUP)) ||
- ((tanlpar & TANAR_FULL_DUP) &&
- (tanar & TANAR_HALF_DUP)) ||
- ((tanlpar & TANAR_HALF_DUP) &&
- (tanar & TANAR_FULL_DUP))) {
-
- /* one or both of us are half duplex */
- writel((readl(dev->base + TXCFG)
- & ~(TXCFG_CSI | TXCFG_HBI)) | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) & ~RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Turn off full duplex LED */
- writel(readl(dev->base + GPIOR) & ~GPIOR_GP1_OUT,
- dev->base + GPIOR);
- }
-
- speed = 4; /* 1000F */
-
- } else {
- /* we have a copper transceiver */
- new_cfg = dev->CFG_cache & ~(CFG_SB | CFG_MODE_1000 | CFG_SPDSTS);
-
- if (cfg & CFG_SPDSTS1)
- new_cfg |= CFG_MODE_1000;
- else
- new_cfg &= ~CFG_MODE_1000;
-
- speed = ((cfg / CFG_SPDSTS0) & 3);
- fullduplex = (cfg & CFG_DUPSTS);
-
- if (fullduplex) {
- new_cfg |= CFG_SB;
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- } else {
- writel(readl(dev->base + TXCFG)
- & ~(TXCFG_CSI | TXCFG_HBI),
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) & ~(RXCFG_RX_FD),
- dev->base + RXCFG);
- }
-
- if ((cfg & CFG_LNKSTS) &&
- ((new_cfg ^ dev->CFG_cache) != 0)) {
- writel(new_cfg, dev->base + CFG);
- dev->CFG_cache = new_cfg;
- }
-
- dev->CFG_cache &= ~CFG_SPDSTS;
- dev->CFG_cache |= cfg & CFG_SPDSTS;
- }
-
- newlinkstate = (cfg & CFG_LNKSTS) ? LINK_UP : LINK_DOWN;
-
- if (newlinkstate & LINK_UP &&
- dev->linkstate != newlinkstate) {
- netif_start_queue(ndev);
- netif_wake_queue(ndev);
- printk(KERN_INFO "%s: link now %s mbps, %s duplex and up.\n",
- ndev->name,
- speeds[speed],
- fullduplex ? "full" : "half");
- } else if (newlinkstate & LINK_DOWN &&
- dev->linkstate != newlinkstate) {
- netif_stop_queue(ndev);
- printk(KERN_INFO "%s: link now down.\n", ndev->name);
- }
-
- dev->linkstate = newlinkstate;
-}
-
-static int ns83820_setup_rx(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- int ret;
-
- dprintk("ns83820_setup_rx(%p)\n", ndev);
-
- dev->rx_info.idle = 1;
- dev->rx_info.next_rx = 0;
- dev->rx_info.next_rx_desc = dev->rx_info.descs;
- dev->rx_info.next_empty = 0;
-
- for (i=0; i<NR_RX_DESC; i++)
- clear_rx_desc(dev, i);
-
- writel(0, dev->base + RXDP_HI);
- writel(dev->rx_info.phy_descs, dev->base + RXDP);
-
- ret = rx_refill(ndev, GFP_KERNEL);
- if (!ret) {
- dprintk("starting receiver\n");
- /* prevent the interrupt handler from stomping on us */
- spin_lock_irq(&dev->rx_info.lock);
-
- writel(0x0001, dev->base + CCSR);
- writel(0, dev->base + RFCR);
- writel(0x7fc00000, dev->base + RFCR);
- writel(0xffc00000, dev->base + RFCR);
-
- dev->rx_info.up = 1;
-
- phy_intr(ndev);
-
- /* Okay, let it rip */
- spin_lock(&dev->misc_lock);
- dev->IMR_cache |= ISR_PHY;
- dev->IMR_cache |= ISR_RXRCMP;
- //dev->IMR_cache |= ISR_RXERR;
- //dev->IMR_cache |= ISR_RXOK;
- dev->IMR_cache |= ISR_RXORN;
- dev->IMR_cache |= ISR_RXSOVR;
- dev->IMR_cache |= ISR_RXDESC;
- dev->IMR_cache |= ISR_RXIDLE;
- dev->IMR_cache |= ISR_TXDESC;
- dev->IMR_cache |= ISR_TXIDLE;
-
- writel(dev->IMR_cache, dev->base + IMR);
- writel(1, dev->base + IER);
- spin_unlock(&dev->misc_lock);
-
- kick_rx(ndev);
-
- spin_unlock_irq(&dev->rx_info.lock);
- }
- return ret;
-}
-
-static void ns83820_cleanup_rx(struct ns83820 *dev)
-{
- unsigned i;
- unsigned long flags;
-
- dprintk("ns83820_cleanup_rx(%p)\n", dev);
-
- /* disable receive interrupts */
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~(ISR_RXOK | ISR_RXDESC | ISR_RXERR | ISR_RXEARLY | ISR_RXIDLE);
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-
- /* synchronize with the interrupt handler and kill it */
- dev->rx_info.up = 0;
- synchronize_irq(dev->pci_dev->irq);
-
- /* touch the pci bus... */
- readl(dev->base + IMR);
-
- /* assumes the transmitter is already disabled and reset */
- writel(0, dev->base + RXDP_HI);
- writel(0, dev->base + RXDP);
-
- for (i=0; i<NR_RX_DESC; i++) {
- struct sk_buff *skb = dev->rx_info.skbs[i];
- dev->rx_info.skbs[i] = NULL;
- clear_rx_desc(dev, i);
- kfree_skb(skb);
- }
-}
-
-static void ns83820_rx_kick(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- /*if (nr_rx_empty(dev) >= NR_RX_DESC/4)*/ {
- if (dev->rx_info.up) {
- rx_refill_atomic(ndev);
- kick_rx(ndev);
- }
- }
-
- if (dev->rx_info.up && nr_rx_empty(dev) > NR_RX_DESC*3/4)
- schedule_work(&dev->tq_refill);
- else
- kick_rx(ndev);
- if (dev->rx_info.idle)
- printk(KERN_DEBUG "%s: BAD\n", ndev->name);
-}
-
-/* rx_irq
- *
- */
-static void rx_irq(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- struct rx_info *info = &dev->rx_info;
- unsigned next_rx;
- int rx_rc, len;
- u32 cmdsts;
- __le32 *desc;
- unsigned long flags;
- int nr = 0;
-
- dprintk("rx_irq(%p)\n", ndev);
- dprintk("rxdp: %08x, descs: %08lx next_rx[%d]: %p next_empty[%d]: %p\n",
- readl(dev->base + RXDP),
- (long)(dev->rx_info.phy_descs),
- (int)dev->rx_info.next_rx,
- (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_rx)),
- (int)dev->rx_info.next_empty,
- (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_empty))
- );
-
- spin_lock_irqsave(&info->lock, flags);
- if (!info->up)
- goto out;
-
- dprintk("walking descs\n");
- next_rx = info->next_rx;
- desc = info->next_rx_desc;
- while ((CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) &&
- (cmdsts != CMDSTS_OWN)) {
- struct sk_buff *skb;
- u32 extsts = le32_to_cpu(desc[DESC_EXTSTS]);
- dma_addr_t bufptr = desc_addr_get(desc + DESC_BUFPTR);
-
- dprintk("cmdsts: %08x\n", cmdsts);
- dprintk("link: %08x\n", cpu_to_le32(desc[DESC_LINK]));
- dprintk("extsts: %08x\n", extsts);
-
- skb = info->skbs[next_rx];
- info->skbs[next_rx] = NULL;
- info->next_rx = (next_rx + 1) % NR_RX_DESC;
-
- mb();
- clear_rx_desc(dev, next_rx);
-
- pci_unmap_single(dev->pci_dev, bufptr,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- len = cmdsts & CMDSTS_LEN_MASK;
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- /* NH: As was mentioned below, this chip is kinda
- * brain dead about vlan tag stripping. Frames
- * that are 64 bytes with a vlan header appended
- * like arp frames, or pings, are flagged as Runts
- * when the tag is stripped and hardware. This
- * also means that the OK bit in the descriptor
- * is cleared when the frame comes in so we have
- * to do a specific length check here to make sure
- * the frame would have been ok, had we not stripped
- * the tag.
- */
- if (likely((CMDSTS_OK & cmdsts) ||
- ((cmdsts & CMDSTS_RUNT) && len >= 56))) {
-#else
- if (likely(CMDSTS_OK & cmdsts)) {
-#endif
- skb_put(skb, len);
- if (unlikely(!skb))
- goto netdev_mangle_me_harder_failed;
- if (cmdsts & CMDSTS_DEST_MULTI)
- ndev->stats.multicast++;
- ndev->stats.rx_packets++;
- ndev->stats.rx_bytes += len;
- if ((extsts & 0x002a0000) && !(extsts & 0x00540000)) {
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- } else {
- skb_checksum_none_assert(skb);
- }
- skb->protocol = eth_type_trans(skb, ndev);
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- if(extsts & EXTSTS_VPKT) {
- unsigned short tag;
-
- tag = ntohs(extsts & EXTSTS_VTG_MASK);
- __vlan_hwaccel_put_tag(skb, tag);
- }
-#endif
- rx_rc = netif_rx(skb);
- if (NET_RX_DROP == rx_rc) {
-netdev_mangle_me_harder_failed:
- ndev->stats.rx_dropped++;
- }
- } else {
- kfree_skb(skb);
- }
-
- nr++;
- next_rx = info->next_rx;
- desc = info->descs + (DESC_SIZE * next_rx);
- }
- info->next_rx = next_rx;
- info->next_rx_desc = info->descs + (DESC_SIZE * next_rx);
-
-out:
- if (0 && !nr) {
- Dprintk("dazed: cmdsts_f: %08x\n", cmdsts);
- }
-
- spin_unlock_irqrestore(&info->lock, flags);
-}
-
-static void rx_action(unsigned long _dev)
-{
- struct net_device *ndev = (void *)_dev;
- struct ns83820 *dev = PRIV(ndev);
- rx_irq(ndev);
- writel(ihr, dev->base + IHR);
-
- spin_lock_irq(&dev->misc_lock);
- dev->IMR_cache |= ISR_RXDESC;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irq(&dev->misc_lock);
-
- rx_irq(ndev);
- ns83820_rx_kick(ndev);
-}
-
-/* Packet Transmit code
- */
-static inline void kick_tx(struct ns83820 *dev)
-{
- dprintk("kick_tx(%p): tx_idx=%d free_idx=%d\n",
- dev, dev->tx_idx, dev->tx_free_idx);
- writel(CR_TXE, dev->base + CR);
-}
-
-/* No spinlock needed on the transmit irq path as the interrupt handler is
- * serialized.
- */
-static void do_tx_done(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cmdsts, tx_done_idx;
- __le32 *desc;
-
- dprintk("do_tx_done(%p)\n", ndev);
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
- while ((tx_done_idx != dev->tx_free_idx) &&
- !(CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) ) {
- struct sk_buff *skb;
- unsigned len;
- dma_addr_t addr;
-
- if (cmdsts & CMDSTS_ERR)
- ndev->stats.tx_errors++;
- if (cmdsts & CMDSTS_OK)
- ndev->stats.tx_packets++;
- if (cmdsts & CMDSTS_OK)
- ndev->stats.tx_bytes += cmdsts & 0xffff;
-
- dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- tx_done_idx, dev->tx_free_idx, cmdsts);
- skb = dev->tx_skbs[tx_done_idx];
- dev->tx_skbs[tx_done_idx] = NULL;
- dprintk("done(%p)\n", skb);
-
- len = cmdsts & CMDSTS_LEN_MASK;
- addr = desc_addr_get(desc + DESC_BUFPTR);
- if (skb) {
- pci_unmap_single(dev->pci_dev,
- addr,
- len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- atomic_dec(&dev->nr_tx_skbs);
- } else
- pci_unmap_page(dev->pci_dev,
- addr,
- len,
- PCI_DMA_TODEVICE);
-
- tx_done_idx = (tx_done_idx + 1) % NR_TX_DESC;
- dev->tx_done_idx = tx_done_idx;
- desc[DESC_CMDSTS] = cpu_to_le32(0);
- mb();
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
- }
-
- /* Allow network stack to resume queueing packets after we've
- * finished transmitting at least 1/4 of the packets in the queue.
- */
- if (netif_queue_stopped(ndev) && start_tx_okay(dev)) {
- dprintk("start_queue(%p)\n", ndev);
- netif_start_queue(ndev);
- netif_wake_queue(ndev);
- }
-}
-
-static void ns83820_cleanup_tx(struct ns83820 *dev)
-{
- unsigned i;
-
- for (i=0; i<NR_TX_DESC; i++) {
- struct sk_buff *skb = dev->tx_skbs[i];
- dev->tx_skbs[i] = NULL;
- if (skb) {
- __le32 *desc = dev->tx_descs + (i * DESC_SIZE);
- pci_unmap_single(dev->pci_dev,
- desc_addr_get(desc + DESC_BUFPTR),
- le32_to_cpu(desc[DESC_CMDSTS]) & CMDSTS_LEN_MASK,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- atomic_dec(&dev->nr_tx_skbs);
- }
- }
-
- memset(dev->tx_descs, 0, NR_TX_DESC * DESC_SIZE * 4);
-}
-
-/* transmit routine. This code relies on the network layer serializing
- * its calls in, but will run happily in parallel with the interrupt
- * handler. This code currently has provisions for fragmenting tx buffers
- * while trying to track down a bug in either the zero copy code or
- * the tx fifo (hence the MAX_FRAG_LEN).
- */
-static netdev_tx_t ns83820_hard_start_xmit(struct sk_buff *skb,
- struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 free_idx, cmdsts, extsts;
- int nr_free, nr_frags;
- unsigned tx_done_idx, last_idx;
- dma_addr_t buf;
- unsigned len;
- skb_frag_t *frag;
- int stopped = 0;
- int do_intr = 0;
- volatile __le32 *first_desc;
-
- dprintk("ns83820_hard_start_xmit\n");
-
- nr_frags = skb_shinfo(skb)->nr_frags;
-again:
- if (unlikely(dev->CFG_cache & CFG_LNKSTS)) {
- netif_stop_queue(ndev);
- if (unlikely(dev->CFG_cache & CFG_LNKSTS))
- return NETDEV_TX_BUSY;
- netif_start_queue(ndev);
- }
-
- last_idx = free_idx = dev->tx_free_idx;
- tx_done_idx = dev->tx_done_idx;
- nr_free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC;
- nr_free -= 1;
- if (nr_free <= nr_frags) {
- dprintk("stop_queue - not enough(%p)\n", ndev);
- netif_stop_queue(ndev);
-
- /* Check again: we may have raced with a tx done irq */
- if (dev->tx_done_idx != tx_done_idx) {
- dprintk("restart queue(%p)\n", ndev);
- netif_start_queue(ndev);
- goto again;
- }
- return NETDEV_TX_BUSY;
- }
-
- if (free_idx == dev->tx_intr_idx) {
- do_intr = 1;
- dev->tx_intr_idx = (dev->tx_intr_idx + NR_TX_DESC/4) % NR_TX_DESC;
- }
-
- nr_free -= nr_frags;
- if (nr_free < MIN_TX_DESC_FREE) {
- dprintk("stop_queue - last entry(%p)\n", ndev);
- netif_stop_queue(ndev);
- stopped = 1;
- }
-
- frag = skb_shinfo(skb)->frags;
- if (!nr_frags)
- frag = NULL;
- extsts = 0;
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- extsts |= EXTSTS_IPPKT;
- if (IPPROTO_TCP == ip_hdr(skb)->protocol)
- extsts |= EXTSTS_TCPPKT;
- else if (IPPROTO_UDP == ip_hdr(skb)->protocol)
- extsts |= EXTSTS_UDPPKT;
- }
-
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- if(vlan_tx_tag_present(skb)) {
- /* fetch the vlan tag info out of the
- * ancillary data if the vlan code
- * is using hw vlan acceleration
- */
- short tag = vlan_tx_tag_get(skb);
- extsts |= (EXTSTS_VPKT | htons(tag));
- }
-#endif
-
- len = skb->len;
- if (nr_frags)
- len -= skb->data_len;
- buf = pci_map_single(dev->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
-
- first_desc = dev->tx_descs + (free_idx * DESC_SIZE);
-
- for (;;) {
- volatile __le32 *desc = dev->tx_descs + (free_idx * DESC_SIZE);
-
- dprintk("frag[%3u]: %4u @ 0x%08Lx\n", free_idx, len,
- (unsigned long long)buf);
- last_idx = free_idx;
- free_idx = (free_idx + 1) % NR_TX_DESC;
- desc[DESC_LINK] = cpu_to_le32(dev->tx_phy_descs + (free_idx * DESC_SIZE * 4));
- desc_addr_set(desc + DESC_BUFPTR, buf);
- desc[DESC_EXTSTS] = cpu_to_le32(extsts);
-
- cmdsts = ((nr_frags) ? CMDSTS_MORE : do_intr ? CMDSTS_INTR : 0);
- cmdsts |= (desc == first_desc) ? 0 : CMDSTS_OWN;
- cmdsts |= len;
- desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
-
- if (!nr_frags)
- break;
-
- buf = pci_map_page(dev->pci_dev, frag->page,
- frag->page_offset,
- frag->size, PCI_DMA_TODEVICE);
- dprintk("frag: buf=%08Lx page=%08lx offset=%08lx\n",
- (long long)buf, (long) page_to_pfn(frag->page),
- frag->page_offset);
- len = frag->size;
- frag++;
- nr_frags--;
- }
- dprintk("done pkt\n");
-
- spin_lock_irq(&dev->tx_lock);
- dev->tx_skbs[last_idx] = skb;
- first_desc[DESC_CMDSTS] |= cpu_to_le32(CMDSTS_OWN);
- dev->tx_free_idx = free_idx;
- atomic_inc(&dev->nr_tx_skbs);
- spin_unlock_irq(&dev->tx_lock);
-
- kick_tx(dev);
-
- /* Check again: we may have raced with a tx done irq */
- if (stopped && (dev->tx_done_idx != tx_done_idx) && start_tx_okay(dev))
- netif_start_queue(ndev);
-
- return NETDEV_TX_OK;
-}
-
-static void ns83820_update_stats(struct ns83820 *dev)
-{
- struct net_device *ndev = dev->ndev;
- u8 __iomem *base = dev->base;
-
- /* the DP83820 will freeze counters, so we need to read all of them */
- ndev->stats.rx_errors += readl(base + 0x60) & 0xffff;
- ndev->stats.rx_crc_errors += readl(base + 0x64) & 0xffff;
- ndev->stats.rx_missed_errors += readl(base + 0x68) & 0xffff;
- ndev->stats.rx_frame_errors += readl(base + 0x6c) & 0xffff;
- /*ndev->stats.rx_symbol_errors +=*/ readl(base + 0x70);
- ndev->stats.rx_length_errors += readl(base + 0x74) & 0xffff;
- ndev->stats.rx_length_errors += readl(base + 0x78) & 0xffff;
- /*ndev->stats.rx_badopcode_errors += */ readl(base + 0x7c);
- /*ndev->stats.rx_pause_count += */ readl(base + 0x80);
- /*ndev->stats.tx_pause_count += */ readl(base + 0x84);
- ndev->stats.tx_carrier_errors += readl(base + 0x88) & 0xff;
-}
-
-static struct net_device_stats *ns83820_get_stats(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
-
- /* somewhat overkill */
- spin_lock_irq(&dev->misc_lock);
- ns83820_update_stats(dev);
- spin_unlock_irq(&dev->misc_lock);
-
- return &ndev->stats;
-}
-
-/* Let ethtool retrieve info */
-static int ns83820_get_settings(struct net_device *ndev,
- struct ethtool_cmd *cmd)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg, tanar, tbicr;
- int fullduplex = 0;
-
- /*
- * Here's the list of available ethtool commands from other drivers:
- * cmd->advertising =
- * ethtool_cmd_speed_set(cmd, ...)
- * cmd->duplex =
- * cmd->port = 0;
- * cmd->phy_address =
- * cmd->transceiver = 0;
- * cmd->autoneg =
- * cmd->maxtxpkt = 0;
- * cmd->maxrxpkt = 0;
- */
-
- /* read current configuration */
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- tanar = readl(dev->base + TANAR);
- tbicr = readl(dev->base + TBICR);
-
- fullduplex = (cfg & CFG_DUPSTS) ? 1 : 0;
-
- cmd->supported = SUPPORTED_Autoneg;
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have optical interface */
- cmd->supported |= SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full |
- SUPPORTED_FIBRE;
- cmd->port = PORT_FIBRE;
- } else {
- /* we have copper */
- cmd->supported |= SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full |
- SUPPORTED_MII;
- cmd->port = PORT_MII;
- }
-
- cmd->duplex = fullduplex ? DUPLEX_FULL : DUPLEX_HALF;
- switch (cfg / CFG_SPDSTS0 & 3) {
- case 2:
- ethtool_cmd_speed_set(cmd, SPEED_1000);
- break;
- case 1:
- ethtool_cmd_speed_set(cmd, SPEED_100);
- break;
- default:
- ethtool_cmd_speed_set(cmd, SPEED_10);
- break;
- }
- cmd->autoneg = (tbicr & TBICR_MR_AN_ENABLE)
- ? AUTONEG_ENABLE : AUTONEG_DISABLE;
- return 0;
-}
-
-/* Let ethool change settings*/
-static int ns83820_set_settings(struct net_device *ndev,
- struct ethtool_cmd *cmd)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg, tanar;
- int have_optical = 0;
- int fullduplex = 0;
-
- /* read current configuration */
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- tanar = readl(dev->base + TANAR);
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have optical */
- have_optical = 1;
- fullduplex = (tanar & TANAR_FULL_DUP);
-
- } else {
- /* we have copper */
- fullduplex = cfg & CFG_DUPSTS;
- }
-
- spin_lock_irq(&dev->misc_lock);
- spin_lock(&dev->tx_lock);
-
- /* Set duplex */
- if (cmd->duplex != fullduplex) {
- if (have_optical) {
- /*set full duplex*/
- if (cmd->duplex == DUPLEX_FULL) {
- /* force full duplex */
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Light up full duplex LED */
- writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
- dev->base + GPIOR);
- } else {
- /*TODO: set half duplex */
- }
-
- } else {
- /*we have copper*/
- /* TODO: Set duplex for copper cards */
- }
- printk(KERN_INFO "%s: Duplex set via ethtool\n",
- ndev->name);
- }
-
- /* Set autonegotiation */
- if (1) {
- if (cmd->autoneg == AUTONEG_ENABLE) {
- /* restart auto negotiation */
- writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
- dev->base + TBICR);
- writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
- dev->linkstate = LINK_AUTONEGOTIATE;
-
- printk(KERN_INFO "%s: autoneg enabled via ethtool\n",
- ndev->name);
- } else {
- /* disable auto negotiation */
- writel(0x00000000, dev->base + TBICR);
- }
-
- printk(KERN_INFO "%s: autoneg %s via ethtool\n", ndev->name,
- cmd->autoneg ? "ENABLED" : "DISABLED");
- }
-
- phy_intr(ndev);
- spin_unlock(&dev->tx_lock);
- spin_unlock_irq(&dev->misc_lock);
-
- return 0;
-}
-/* end ethtool get/set support -df */
-
-static void ns83820_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info)
-{
- struct ns83820 *dev = PRIV(ndev);
- strcpy(info->driver, "ns83820");
- strcpy(info->version, VERSION);
- strcpy(info->bus_info, pci_name(dev->pci_dev));
-}
-
-static u32 ns83820_get_link(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- return cfg & CFG_LNKSTS ? 1 : 0;
-}
-
-static const struct ethtool_ops ops = {
- .get_settings = ns83820_get_settings,
- .set_settings = ns83820_set_settings,
- .get_drvinfo = ns83820_get_drvinfo,
- .get_link = ns83820_get_link
-};
-
-static inline void ns83820_disable_interrupts(struct ns83820 *dev)
-{
- writel(0, dev->base + IMR);
- writel(0, dev->base + IER);
- readl(dev->base + IER);
-}
-
-/* this function is called in irq context from the ISR */
-static void ns83820_mib_isr(struct ns83820 *dev)
-{
- unsigned long flags;
- spin_lock_irqsave(&dev->misc_lock, flags);
- ns83820_update_stats(dev);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-}
-
-static void ns83820_do_isr(struct net_device *ndev, u32 isr);
-static irqreturn_t ns83820_irq(int foo, void *data)
-{
- struct net_device *ndev = data;
- struct ns83820 *dev = PRIV(ndev);
- u32 isr;
- dprintk("ns83820_irq(%p)\n", ndev);
-
- dev->ihr = 0;
-
- isr = readl(dev->base + ISR);
- dprintk("irq: %08x\n", isr);
- ns83820_do_isr(ndev, isr);
- return IRQ_HANDLED;
-}
-
-static void ns83820_do_isr(struct net_device *ndev, u32 isr)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned long flags;
-
-#ifdef DEBUG
- if (isr & ~(ISR_PHY | ISR_RXDESC | ISR_RXEARLY | ISR_RXOK | ISR_RXERR | ISR_TXIDLE | ISR_TXOK | ISR_TXDESC))
- Dprintk("odd isr? 0x%08x\n", isr);
-#endif
-
- if (ISR_RXIDLE & isr) {
- dev->rx_info.idle = 1;
- Dprintk("oh dear, we are idle\n");
- ns83820_rx_kick(ndev);
- }
-
- if ((ISR_RXDESC | ISR_RXOK) & isr) {
- prefetch(dev->rx_info.next_rx_desc);
-
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~(ISR_RXDESC | ISR_RXOK);
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-
- tasklet_schedule(&dev->rx_tasklet);
- //rx_irq(ndev);
- //writel(4, dev->base + IHR);
- }
-
- if ((ISR_RXIDLE | ISR_RXORN | ISR_RXDESC | ISR_RXOK | ISR_RXERR) & isr)
- ns83820_rx_kick(ndev);
-
- if (unlikely(ISR_RXSOVR & isr)) {
- //printk("overrun: rxsovr\n");
- ndev->stats.rx_fifo_errors++;
- }
-
- if (unlikely(ISR_RXORN & isr)) {
- //printk("overrun: rxorn\n");
- ndev->stats.rx_fifo_errors++;
- }
-
- if ((ISR_RXRCMP & isr) && dev->rx_info.up)
- writel(CR_RXE, dev->base + CR);
-
- if (ISR_TXIDLE & isr) {
- u32 txdp;
- txdp = readl(dev->base + TXDP);
- dprintk("txdp: %08x\n", txdp);
- txdp -= dev->tx_phy_descs;
- dev->tx_idx = txdp / (DESC_SIZE * 4);
- if (dev->tx_idx >= NR_TX_DESC) {
- printk(KERN_ALERT "%s: BUG -- txdp out of range\n", ndev->name);
- dev->tx_idx = 0;
- }
- /* The may have been a race between a pci originated read
- * and the descriptor update from the cpu. Just in case,
- * kick the transmitter if the hardware thinks it is on a
- * different descriptor than we are.
- */
- if (dev->tx_idx != dev->tx_free_idx)
- kick_tx(dev);
- }
-
- /* Defer tx ring processing until more than a minimum amount of
- * work has accumulated
- */
- if ((ISR_TXDESC | ISR_TXIDLE | ISR_TXOK | ISR_TXERR) & isr) {
- spin_lock_irqsave(&dev->tx_lock, flags);
- do_tx_done(ndev);
- spin_unlock_irqrestore(&dev->tx_lock, flags);
-
- /* Disable TxOk if there are no outstanding tx packets.
- */
- if ((dev->tx_done_idx == dev->tx_free_idx) &&
- (dev->IMR_cache & ISR_TXOK)) {
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~ISR_TXOK;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
- }
- }
-
- /* The TxIdle interrupt can come in before the transmit has
- * completed. Normally we reap packets off of the combination
- * of TxDesc and TxIdle and leave TxOk disabled (since it
- * occurs on every packet), but when no further irqs of this
- * nature are expected, we must enable TxOk.
- */
- if ((ISR_TXIDLE & isr) && (dev->tx_done_idx != dev->tx_free_idx)) {
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache |= ISR_TXOK;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
- }
-
- /* MIB interrupt: one of the statistics counters is about to overflow */
- if (unlikely(ISR_MIB & isr))
- ns83820_mib_isr(dev);
-
- /* PHY: Link up/down/negotiation state change */
- if (unlikely(ISR_PHY & isr))
- phy_intr(ndev);
-
-#if 0 /* Still working on the interrupt mitigation strategy */
- if (dev->ihr)
- writel(dev->ihr, dev->base + IHR);
-#endif
-}
-
-static void ns83820_do_reset(struct ns83820 *dev, u32 which)
-{
- Dprintk("resetting chip...\n");
- writel(which, dev->base + CR);
- do {
- schedule();
- } while (readl(dev->base + CR) & which);
- Dprintk("okay!\n");
-}
-
-static int ns83820_stop(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
-
- /* FIXME: protect against interrupt handler? */
- del_timer_sync(&dev->tx_watchdog);
-
- ns83820_disable_interrupts(dev);
-
- dev->rx_info.up = 0;
- synchronize_irq(dev->pci_dev->irq);
-
- ns83820_do_reset(dev, CR_RST);
-
- synchronize_irq(dev->pci_dev->irq);
-
- spin_lock_irq(&dev->misc_lock);
- dev->IMR_cache &= ~(ISR_TXURN | ISR_TXIDLE | ISR_TXERR | ISR_TXDESC | ISR_TXOK);
- spin_unlock_irq(&dev->misc_lock);
-
- ns83820_cleanup_rx(dev);
- ns83820_cleanup_tx(dev);
-
- return 0;
-}
-
-static void ns83820_tx_timeout(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 tx_done_idx;
- __le32 *desc;
- unsigned long flags;
-
- spin_lock_irqsave(&dev->tx_lock, flags);
-
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- printk(KERN_INFO "%s: tx_timeout: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- ndev->name,
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
-
-#if defined(DEBUG)
- {
- u32 isr;
- isr = readl(dev->base + ISR);
- printk("irq: %08x imr: %08x\n", isr, dev->IMR_cache);
- ns83820_do_isr(ndev, isr);
- }
-#endif
-
- do_tx_done(ndev);
-
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- printk(KERN_INFO "%s: after: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- ndev->name,
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
-
- spin_unlock_irqrestore(&dev->tx_lock, flags);
-}
-
-static void ns83820_tx_watch(unsigned long data)
-{
- struct net_device *ndev = (void *)data;
- struct ns83820 *dev = PRIV(ndev);
-
-#if defined(DEBUG)
- printk("ns83820_tx_watch: %u %u %d\n",
- dev->tx_done_idx, dev->tx_free_idx, atomic_read(&dev->nr_tx_skbs)
- );
-#endif
-
- if (time_after(jiffies, dev_trans_start(ndev) + 1*HZ) &&
- dev->tx_done_idx != dev->tx_free_idx) {
- printk(KERN_DEBUG "%s: ns83820_tx_watch: %u %u %d\n",
- ndev->name,
- dev->tx_done_idx, dev->tx_free_idx,
- atomic_read(&dev->nr_tx_skbs));
- ns83820_tx_timeout(ndev);
- }
-
- mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
-}
-
-static int ns83820_open(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- u32 desc;
- int ret;
-
- dprintk("ns83820_open\n");
-
- writel(0, dev->base + PQCR);
-
- ret = ns83820_setup_rx(ndev);
- if (ret)
- goto failed;
-
- memset(dev->tx_descs, 0, 4 * NR_TX_DESC * DESC_SIZE);
- for (i=0; i<NR_TX_DESC; i++) {
- dev->tx_descs[(i * DESC_SIZE) + DESC_LINK]
- = cpu_to_le32(
- dev->tx_phy_descs
- + ((i+1) % NR_TX_DESC) * DESC_SIZE * 4);
- }
-
- dev->tx_idx = 0;
- dev->tx_done_idx = 0;
- desc = dev->tx_phy_descs;
- writel(0, dev->base + TXDP_HI);
- writel(desc, dev->base + TXDP);
-
- init_timer(&dev->tx_watchdog);
- dev->tx_watchdog.data = (unsigned long)ndev;
- dev->tx_watchdog.function = ns83820_tx_watch;
- mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
-
- netif_start_queue(ndev); /* FIXME: wait for phy to come up */
-
- return 0;
-
-failed:
- ns83820_stop(ndev);
- return ret;
-}
-
-static void ns83820_getmac(struct ns83820 *dev, u8 *mac)
-{
- unsigned i;
- for (i=0; i<3; i++) {
- u32 data;
-
- /* Read from the perfect match memory: this is loaded by
- * the chip from the EEPROM via the EELOAD self test.
- */
- writel(i*2, dev->base + RFCR);
- data = readl(dev->base + RFDR);
-
- *mac++ = data;
- *mac++ = data >> 8;
- }
-}
-
-static int ns83820_change_mtu(struct net_device *ndev, int new_mtu)
-{
- if (new_mtu > RX_BUF_SIZE)
- return -EINVAL;
- ndev->mtu = new_mtu;
- return 0;
-}
-
-static void ns83820_set_multicast(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u8 __iomem *rfcr = dev->base + RFCR;
- u32 and_mask = 0xffffffff;
- u32 or_mask = 0;
- u32 val;
-
- if (ndev->flags & IFF_PROMISC)
- or_mask |= RFCR_AAU | RFCR_AAM;
- else
- and_mask &= ~(RFCR_AAU | RFCR_AAM);
-
- if (ndev->flags & IFF_ALLMULTI || netdev_mc_count(ndev))
- or_mask |= RFCR_AAM;
- else
- and_mask &= ~RFCR_AAM;
-
- spin_lock_irq(&dev->misc_lock);
- val = (readl(rfcr) & and_mask) | or_mask;
- /* Ramit : RFCR Write Fix doc says RFEN must be 0 modify other bits */
- writel(val & ~RFCR_RFEN, rfcr);
- writel(val, rfcr);
- spin_unlock_irq(&dev->misc_lock);
-}
-
-static void ns83820_run_bist(struct net_device *ndev, const char *name, u32 enable, u32 done, u32 fail)
-{
- struct ns83820 *dev = PRIV(ndev);
- int timed_out = 0;
- unsigned long start;
- u32 status;
- int loops = 0;
-
- dprintk("%s: start %s\n", ndev->name, name);
-
- start = jiffies;
-
- writel(enable, dev->base + PTSCR);
- for (;;) {
- loops++;
- status = readl(dev->base + PTSCR);
- if (!(status & enable))
- break;
- if (status & done)
- break;
- if (status & fail)
- break;
- if (time_after_eq(jiffies, start + HZ)) {
- timed_out = 1;
- break;
- }
- schedule_timeout_uninterruptible(1);
- }
-
- if (status & fail)
- printk(KERN_INFO "%s: %s failed! (0x%08x & 0x%08x)\n",
- ndev->name, name, status, fail);
- else if (timed_out)
- printk(KERN_INFO "%s: run_bist %s timed out! (%08x)\n",
- ndev->name, name, status);
-
- dprintk("%s: done %s in %d loops\n", ndev->name, name, loops);
-}
-
-#ifdef PHY_CODE_IS_FINISHED
-static void ns83820_mii_write_bit(struct ns83820 *dev, int bit)
-{
- /* drive MDC low */
- dev->MEAR_cache &= ~MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* enable output, set bit */
- dev->MEAR_cache |= MEAR_MDDIR;
- if (bit)
- dev->MEAR_cache |= MEAR_MDIO;
- else
- dev->MEAR_cache &= ~MEAR_MDIO;
-
- /* set the output bit */
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
- udelay(1);
-
- /* drive MDC high causing the data bit to be latched */
- dev->MEAR_cache |= MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait again... */
- udelay(1);
-}
-
-static int ns83820_mii_read_bit(struct ns83820 *dev)
-{
- int bit;
-
- /* drive MDC low, disable output */
- dev->MEAR_cache &= ~MEAR_MDC;
- dev->MEAR_cache &= ~MEAR_MDDIR;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
- udelay(1);
-
- /* drive MDC high causing the data bit to be latched */
- bit = (readl(dev->base + MEAR) & MEAR_MDIO) ? 1 : 0;
- dev->MEAR_cache |= MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
-
- /* Wait again... */
- udelay(1);
-
- return bit;
-}
-
-static unsigned ns83820_mii_read_reg(struct ns83820 *dev, unsigned phy, unsigned reg)
-{
- unsigned data = 0;
- int i;
-
- /* read some garbage so that we eventually sync up */
- for (i=0; i<64; i++)
- ns83820_mii_read_bit(dev);
-
- ns83820_mii_write_bit(dev, 0); /* start */
- ns83820_mii_write_bit(dev, 1);
- ns83820_mii_write_bit(dev, 1); /* opcode read */
- ns83820_mii_write_bit(dev, 0);
-
- /* write out the phy address: 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, phy & (0x10 >> i));
-
- /* write out the register address, 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, reg & (0x10 >> i));
-
- ns83820_mii_read_bit(dev); /* turn around cycles */
- ns83820_mii_read_bit(dev);
-
- /* read in the register data, 16 bits msb first */
- for (i=0; i<16; i++) {
- data <<= 1;
- data |= ns83820_mii_read_bit(dev);
- }
-
- return data;
-}
-
-static unsigned ns83820_mii_write_reg(struct ns83820 *dev, unsigned phy, unsigned reg, unsigned data)
-{
- int i;
-
- /* read some garbage so that we eventually sync up */
- for (i=0; i<64; i++)
- ns83820_mii_read_bit(dev);
-
- ns83820_mii_write_bit(dev, 0); /* start */
- ns83820_mii_write_bit(dev, 1);
- ns83820_mii_write_bit(dev, 0); /* opcode read */
- ns83820_mii_write_bit(dev, 1);
-
- /* write out the phy address: 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, phy & (0x10 >> i));
-
- /* write out the register address, 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, reg & (0x10 >> i));
-
- ns83820_mii_read_bit(dev); /* turn around cycles */
- ns83820_mii_read_bit(dev);
-
- /* read in the register data, 16 bits msb first */
- for (i=0; i<16; i++)
- ns83820_mii_write_bit(dev, (data >> (15 - i)) & 1);
-
- return data;
-}
-
-static void ns83820_probe_phy(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- static int first;
- int i;
-#define MII_PHYIDR1 0x02
-#define MII_PHYIDR2 0x03
-
-#if 0
- if (!first) {
- unsigned tmp;
- ns83820_mii_read_reg(dev, 1, 0x09);
- ns83820_mii_write_reg(dev, 1, 0x10, 0x0d3e);
-
- tmp = ns83820_mii_read_reg(dev, 1, 0x00);
- ns83820_mii_write_reg(dev, 1, 0x00, tmp | 0x8000);
- udelay(1300);
- ns83820_mii_read_reg(dev, 1, 0x09);
- }
-#endif
- first = 1;
-
- for (i=1; i<2; i++) {
- int j;
- unsigned a, b;
- a = ns83820_mii_read_reg(dev, i, MII_PHYIDR1);
- b = ns83820_mii_read_reg(dev, i, MII_PHYIDR2);
-
- //printk("%s: phy %d: 0x%04x 0x%04x\n",
- // ndev->name, i, a, b);
-
- for (j=0; j<0x16; j+=4) {
- dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
- ndev->name, j,
- ns83820_mii_read_reg(dev, i, 0 + j),
- ns83820_mii_read_reg(dev, i, 1 + j),
- ns83820_mii_read_reg(dev, i, 2 + j),
- ns83820_mii_read_reg(dev, i, 3 + j)
- );
- }
- }
- {
- unsigned a, b;
- /* read firmware version: memory addr is 0x8402 and 0x8403 */
- ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
- ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
- a = ns83820_mii_read_reg(dev, 1, 0x1d);
-
- ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
- ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
- b = ns83820_mii_read_reg(dev, 1, 0x1d);
- dprintk("version: 0x%04x 0x%04x\n", a, b);
- }
-}
-#endif
-
-static const struct net_device_ops netdev_ops = {
- .ndo_open = ns83820_open,
- .ndo_stop = ns83820_stop,
- .ndo_start_xmit = ns83820_hard_start_xmit,
- .ndo_get_stats = ns83820_get_stats,
- .ndo_change_mtu = ns83820_change_mtu,
- .ndo_set_multicast_list = ns83820_set_multicast,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_tx_timeout = ns83820_tx_timeout,
-};
-
-static int __devinit ns83820_init_one(struct pci_dev *pci_dev,
- const struct pci_device_id *id)
-{
- struct net_device *ndev;
- struct ns83820 *dev;
- long addr;
- int err;
- int using_dac = 0;
-
- /* See if we can set the dma mask early on; failure is fatal. */
- if (sizeof(dma_addr_t) == 8 &&
- !pci_set_dma_mask(pci_dev, DMA_BIT_MASK(64))) {
- using_dac = 1;
- } else if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
- using_dac = 0;
- } else {
- dev_warn(&pci_dev->dev, "pci_set_dma_mask failed!\n");
- return -ENODEV;
- }
-
- ndev = alloc_etherdev(sizeof(struct ns83820));
- err = -ENOMEM;
- if (!ndev)
- goto out;
-
- dev = PRIV(ndev);
- dev->ndev = ndev;
-
- spin_lock_init(&dev->rx_info.lock);
- spin_lock_init(&dev->tx_lock);
- spin_lock_init(&dev->misc_lock);
- dev->pci_dev = pci_dev;
-
- SET_NETDEV_DEV(ndev, &pci_dev->dev);
-
- INIT_WORK(&dev->tq_refill, queue_refill);
- tasklet_init(&dev->rx_tasklet, rx_action, (unsigned long)ndev);
-
- err = pci_enable_device(pci_dev);
- if (err) {
- dev_info(&pci_dev->dev, "pci_enable_dev failed: %d\n", err);
- goto out_free;
- }
-
- pci_set_master(pci_dev);
- addr = pci_resource_start(pci_dev, 1);
- dev->base = ioremap_nocache(addr, PAGE_SIZE);
- dev->tx_descs = pci_alloc_consistent(pci_dev,
- 4 * DESC_SIZE * NR_TX_DESC, &dev->tx_phy_descs);
- dev->rx_info.descs = pci_alloc_consistent(pci_dev,
- 4 * DESC_SIZE * NR_RX_DESC, &dev->rx_info.phy_descs);
- err = -ENOMEM;
- if (!dev->base || !dev->tx_descs || !dev->rx_info.descs)
- goto out_disable;
-
- dprintk("%p: %08lx %p: %08lx\n",
- dev->tx_descs, (long)dev->tx_phy_descs,
- dev->rx_info.descs, (long)dev->rx_info.phy_descs);
-
- ns83820_disable_interrupts(dev);
-
- dev->IMR_cache = 0;
-
- err = request_irq(pci_dev->irq, ns83820_irq, IRQF_SHARED,
- DRV_NAME, ndev);
- if (err) {
- dev_info(&pci_dev->dev, "unable to register irq %d, err %d\n",
- pci_dev->irq, err);
- goto out_disable;
- }
-
- /*
- * FIXME: we are holding rtnl_lock() over obscenely long area only
- * because some of the setup code uses dev->name. It's Wrong(tm) -
- * we should be using driver-specific names for all that stuff.
- * For now that will do, but we really need to come back and kill
- * most of the dev_alloc_name() users later.
- */
- rtnl_lock();
- err = dev_alloc_name(ndev, ndev->name);
- if (err < 0) {
- dev_info(&pci_dev->dev, "unable to get netdev name: %d\n", err);
- goto out_free_irq;
- }
-
- printk("%s: ns83820.c: 0x22c: %08x, subsystem: %04x:%04x\n",
- ndev->name, le32_to_cpu(readl(dev->base + 0x22c)),
- pci_dev->subsystem_vendor, pci_dev->subsystem_device);
-
- ndev->netdev_ops = &netdev_ops;
- SET_ETHTOOL_OPS(ndev, &ops);
- ndev->watchdog_timeo = 5 * HZ;
- pci_set_drvdata(pci_dev, ndev);
-
- ns83820_do_reset(dev, CR_RST);
-
- /* Must reset the ram bist before running it */
- writel(PTSCR_RBIST_RST, dev->base + PTSCR);
- ns83820_run_bist(ndev, "sram bist", PTSCR_RBIST_EN,
- PTSCR_RBIST_DONE, PTSCR_RBIST_FAIL);
- ns83820_run_bist(ndev, "eeprom bist", PTSCR_EEBIST_EN, 0,
- PTSCR_EEBIST_FAIL);
- ns83820_run_bist(ndev, "eeprom load", PTSCR_EELOAD_EN, 0, 0);
-
- /* I love config registers */
- dev->CFG_cache = readl(dev->base + CFG);
-
- if ((dev->CFG_cache & CFG_PCI64_DET)) {
- printk(KERN_INFO "%s: detected 64 bit PCI data bus.\n",
- ndev->name);
- /*dev->CFG_cache |= CFG_DATA64_EN;*/
- if (!(dev->CFG_cache & CFG_DATA64_EN))
- printk(KERN_INFO "%s: EEPROM did not enable 64 bit bus. Disabled.\n",
- ndev->name);
- } else
- dev->CFG_cache &= ~(CFG_DATA64_EN);
-
- dev->CFG_cache &= (CFG_TBI_EN | CFG_MRM_DIS | CFG_MWI_DIS |
- CFG_T64ADDR | CFG_DATA64_EN | CFG_EXT_125 |
- CFG_M64ADDR);
- dev->CFG_cache |= CFG_PINT_DUPSTS | CFG_PINT_LNKSTS | CFG_PINT_SPDSTS |
- CFG_EXTSTS_EN | CFG_EXD | CFG_PESEL;
- dev->CFG_cache |= CFG_REQALG;
- dev->CFG_cache |= CFG_POW;
- dev->CFG_cache |= CFG_TMRTEST;
-
- /* When compiled with 64 bit addressing, we must always enable
- * the 64 bit descriptor format.
- */
- if (sizeof(dma_addr_t) == 8)
- dev->CFG_cache |= CFG_M64ADDR;
- if (using_dac)
- dev->CFG_cache |= CFG_T64ADDR;
-
- /* Big endian mode does not seem to do what the docs suggest */
- dev->CFG_cache &= ~CFG_BEM;
-
- /* setup optical transceiver if we have one */
- if (dev->CFG_cache & CFG_TBI_EN) {
- printk(KERN_INFO "%s: enabling optical transceiver\n",
- ndev->name);
- writel(readl(dev->base + GPIOR) | 0x3e8, dev->base + GPIOR);
-
- /* setup auto negotiation feature advertisement */
- writel(readl(dev->base + TANAR)
- | TANAR_HALF_DUP | TANAR_FULL_DUP,
- dev->base + TANAR);
-
- /* start auto negotiation */
- writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
- dev->base + TBICR);
- writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
- dev->linkstate = LINK_AUTONEGOTIATE;
-
- dev->CFG_cache |= CFG_MODE_1000;
- }
-
- writel(dev->CFG_cache, dev->base + CFG);
- dprintk("CFG: %08x\n", dev->CFG_cache);
-
- if (reset_phy) {
- printk(KERN_INFO "%s: resetting phy\n", ndev->name);
- writel(dev->CFG_cache | CFG_PHY_RST, dev->base + CFG);
- msleep(10);
- writel(dev->CFG_cache, dev->base + CFG);
- }
-
-#if 0 /* Huh? This sets the PCI latency register. Should be done via
- * the PCI layer. FIXME.
- */
- if (readl(dev->base + SRR))
- writel(readl(dev->base+0x20c) | 0xfe00, dev->base + 0x20c);
-#endif
-
- /* Note! The DMA burst size interacts with packet
- * transmission, such that the largest packet that
- * can be transmitted is 8192 - FLTH - burst size.
- * If only the transmit fifo was larger...
- */
- /* Ramit : 1024 DMA is not a good idea, it ends up banging
- * some DELL and COMPAQ SMP systems */
- writel(TXCFG_CSI | TXCFG_HBI | TXCFG_ATP | TXCFG_MXDMA512
- | ((1600 / 32) * 0x100),
- dev->base + TXCFG);
-
- /* Flush the interrupt holdoff timer */
- writel(0x000, dev->base + IHR);
- writel(0x100, dev->base + IHR);
- writel(0x000, dev->base + IHR);
-
- /* Set Rx to full duplex, don't accept runt, errored, long or length
- * range errored packets. Use 512 byte DMA.
- */
- /* Ramit : 1024 DMA is not a good idea, it ends up banging
- * some DELL and COMPAQ SMP systems
- * Turn on ALP, only we are accpeting Jumbo Packets */
- writel(RXCFG_AEP | RXCFG_ARP | RXCFG_AIRL | RXCFG_RX_FD
- | RXCFG_STRIPCRC
- //| RXCFG_ALP
- | (RXCFG_MXDMA512) | 0, dev->base + RXCFG);
-
- /* Disable priority queueing */
- writel(0, dev->base + PQCR);
-
- /* Enable IP checksum validation and detetion of VLAN headers.
- * Note: do not set the reject options as at least the 0x102
- * revision of the chip does not properly accept IP fragments
- * at least for UDP.
- */
- /* Ramit : Be sure to turn on RXCFG_ARP if VLAN's are enabled, since
- * the MAC it calculates the packetsize AFTER stripping the VLAN
- * header, and if a VLAN Tagged packet of 64 bytes is received (like
- * a ping with a VLAN header) then the card, strips the 4 byte VLAN
- * tag and then checks the packet size, so if RXCFG_ARP is not enabled,
- * it discrards it!. These guys......
- * also turn on tag stripping if hardware acceleration is enabled
- */
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
-#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN|VRCR_VTREN)
-#else
-#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN)
-#endif
- writel(VRCR_INIT_VALUE, dev->base + VRCR);
-
- /* Enable per-packet TCP/UDP/IP checksumming
- * and per packet vlan tag insertion if
- * vlan hardware acceleration is enabled
- */
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
-#define VTCR_INIT_VALUE (VTCR_PPCHK|VTCR_VPPTI)
-#else
-#define VTCR_INIT_VALUE VTCR_PPCHK
-#endif
- writel(VTCR_INIT_VALUE, dev->base + VTCR);
-
- /* Ramit : Enable async and sync pause frames */
- /* writel(0, dev->base + PCR); */
- writel((PCR_PS_MCAST | PCR_PS_DA | PCR_PSEN | PCR_FFLO_4K |
- PCR_FFHI_8K | PCR_STLO_4 | PCR_STHI_8 | PCR_PAUSE_CNT),
- dev->base + PCR);
-
- /* Disable Wake On Lan */
- writel(0, dev->base + WCSR);
-
- ns83820_getmac(dev, ndev->dev_addr);
-
- /* Yes, we support dumb IP checksum on transmit */
- ndev->features |= NETIF_F_SG;
- ndev->features |= NETIF_F_IP_CSUM;
-
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- /* We also support hardware vlan acceleration */
- ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
-#endif
-
- if (using_dac) {
- printk(KERN_INFO "%s: using 64 bit addressing.\n",
- ndev->name);
- ndev->features |= NETIF_F_HIGHDMA;
- }
-
- printk(KERN_INFO "%s: ns83820 v" VERSION ": DP83820 v%u.%u: %pM io=0x%08lx irq=%d f=%s\n",
- ndev->name,
- (unsigned)readl(dev->base + SRR) >> 8,
- (unsigned)readl(dev->base + SRR) & 0xff,
- ndev->dev_addr, addr, pci_dev->irq,
- (ndev->features & NETIF_F_HIGHDMA) ? "h,sg" : "sg"
- );
-
-#ifdef PHY_CODE_IS_FINISHED
- ns83820_probe_phy(ndev);
-#endif
-
- err = register_netdevice(ndev);
- if (err) {
- printk(KERN_INFO "ns83820: unable to register netdev: %d\n", err);
- goto out_cleanup;
- }
- rtnl_unlock();
-
- return 0;
-
-out_cleanup:
- ns83820_disable_interrupts(dev); /* paranoia */
-out_free_irq:
- rtnl_unlock();
- free_irq(pci_dev->irq, ndev);
-out_disable:
- if (dev->base)
- iounmap(dev->base);
- pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_TX_DESC, dev->tx_descs, dev->tx_phy_descs);
- pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_RX_DESC, dev->rx_info.descs, dev->rx_info.phy_descs);
- pci_disable_device(pci_dev);
-out_free:
- free_netdev(ndev);
- pci_set_drvdata(pci_dev, NULL);
-out:
- return err;
-}
-
-static void __devexit ns83820_remove_one(struct pci_dev *pci_dev)
-{
- struct net_device *ndev = pci_get_drvdata(pci_dev);
- struct ns83820 *dev = PRIV(ndev); /* ok even if NULL */
-
- if (!ndev) /* paranoia */
- return;
-
- ns83820_disable_interrupts(dev); /* paranoia */
-
- unregister_netdev(ndev);
- free_irq(dev->pci_dev->irq, ndev);
- iounmap(dev->base);
- pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_TX_DESC,
- dev->tx_descs, dev->tx_phy_descs);
- pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_RX_DESC,
- dev->rx_info.descs, dev->rx_info.phy_descs);
- pci_disable_device(dev->pci_dev);
- free_netdev(ndev);
- pci_set_drvdata(pci_dev, NULL);
-}
-
-static DEFINE_PCI_DEVICE_TABLE(ns83820_pci_tbl) = {
- { 0x100b, 0x0022, PCI_ANY_ID, PCI_ANY_ID, 0, .driver_data = 0, },
- { 0, },
-};
-
-static struct pci_driver driver = {
- .name = "ns83820",
- .id_table = ns83820_pci_tbl,
- .probe = ns83820_init_one,
- .remove = __devexit_p(ns83820_remove_one),
-#if 0 /* FIXME: implement */
- .suspend = ,
- .resume = ,
-#endif
-};
-
-
-static int __init ns83820_init(void)
-{
- printk(KERN_INFO "ns83820.c: National Semiconductor DP83820 10/100/1000 driver.\n");
- return pci_register_driver(&driver);
-}
-
-static void __exit ns83820_exit(void)
-{
- pci_unregister_driver(&driver);
-}
-
-MODULE_AUTHOR("Benjamin LaHaise <bcrl@kvack.org>");
-MODULE_DESCRIPTION("National Semiconductor DP83820 10/100/1000 driver");
-MODULE_LICENSE("GPL");
-
-MODULE_DEVICE_TABLE(pci, ns83820_pci_tbl);
-
-module_param(lnksts, int, 0);
-MODULE_PARM_DESC(lnksts, "Polarity of LNKSTS bit");
-
-module_param(ihr, int, 0);
-MODULE_PARM_DESC(ihr, "Time in 100 us increments to delay interrupts (range 0-127)");
-
-module_param(reset_phy, int, 0);
-MODULE_PARM_DESC(reset_phy, "Set to 1 to reset the PHY on startup");
-
-module_init(ns83820_init);
-module_exit(ns83820_exit);