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   1 /*
   2  * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
   3  *
   4  * Note: This driver is a cleanroom reimplementation based on reverse
   5  *      engineered documentation written by Carl-Daniel Hailfinger
   6  *      and Andrew de Quincey. It's neither supported nor endorsed
   7  *      by NVIDIA Corp. Use at your own risk.
   8  *
   9  * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
  10  * trademarks of NVIDIA Corporation in the United States and other
  11  * countries.
  12  *
  13  * Copyright (C) 2003,4 Manfred Spraul
  14  * Copyright (C) 2004 Andrew de Quincey (wol support)
  15  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  16  *              IRQ rate fixes, bigendian fixes, cleanups, verification)
  17  * Copyright (c) 2004 NVIDIA Corporation
  18  *
  19  * This program is free software; you can redistribute it and/or modify
  20  * it under the terms of the GNU General Public License as published by
  21  * the Free Software Foundation; either version 2 of the License, or
  22  * (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; if not, write to the Free Software
  31  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  32  *
  33  * Changelog:
  34  *      0.01: 05 Oct 2003: First release that compiles without warnings.
  35  *      0.02: 05 Oct 2003: Fix bug for nv_drain_tx: do not try to free NULL skbs.
  36  *                         Check all PCI BARs for the register window.
  37  *                         udelay added to mii_rw.
  38  *      0.03: 06 Oct 2003: Initialize dev->irq.
  39  *      0.04: 07 Oct 2003: Initialize np->lock, reduce handled irqs, add printks.
  40  *      0.05: 09 Oct 2003: printk removed again, irq status print tx_timeout.
  41  *      0.06: 10 Oct 2003: MAC Address read updated, pff flag generation updated,
  42  *                         irq mask updated
  43  *      0.07: 14 Oct 2003: Further irq mask updates.
  44  *      0.08: 20 Oct 2003: rx_desc.Length initialization added, nv_alloc_rx refill
  45  *                         added into irq handler, NULL check for drain_ring.
  46  *      0.09: 20 Oct 2003: Basic link speed irq implementation. Only handle the
  47  *                         requested interrupt sources.
  48  *      0.10: 20 Oct 2003: First cleanup for release.
  49  *      0.11: 21 Oct 2003: hexdump for tx added, rx buffer sizes increased.
  50  *                         MAC Address init fix, set_multicast cleanup.
  51  *      0.12: 23 Oct 2003: Cleanups for release.
  52  *      0.13: 25 Oct 2003: Limit for concurrent tx packets increased to 10.
  53  *                         Set link speed correctly. start rx before starting
  54  *                         tx (nv_start_rx sets the link speed).
  55  *      0.14: 25 Oct 2003: Nic dependant irq mask.
  56  *      0.15: 08 Nov 2003: fix smp deadlock with set_multicast_list during
  57  *                         open.
  58  *      0.16: 15 Nov 2003: include file cleanup for ppc64, rx buffer size
  59  *                         increased to 1628 bytes.
  60  *      0.17: 16 Nov 2003: undo rx buffer size increase. Substract 1 from
  61  *                         the tx length.
  62  *      0.18: 17 Nov 2003: fix oops due to late initialization of dev_stats
  63  *      0.19: 29 Nov 2003: Handle RxNoBuf, detect & handle invalid mac
  64  *                         addresses, really stop rx if already running
  65  *                         in nv_start_rx, clean up a bit.
  66  *      0.20: 07 Dec 2003: alloc fixes
  67  *      0.21: 12 Jan 2004: additional alloc fix, nic polling fix.
  68  *      0.22: 19 Jan 2004: reprogram timer to a sane rate, avoid lockup
  69  *                         on close.
  70  *      0.23: 26 Jan 2004: various small cleanups
  71  *      0.24: 27 Feb 2004: make driver even less anonymous in backtraces
  72  *      0.25: 09 Mar 2004: wol support
  73  *      0.26: 03 Jun 2004: netdriver specific annotation, sparse-related fixes
  74  *      0.27: 19 Jun 2004: Gigabit support, new descriptor rings,
  75  *                         added CK804/MCP04 device IDs, code fixes
  76  *                         for registers, link status and other minor fixes.
  77  *      0.28: 21 Jun 2004: Big cleanup, making driver mostly endian safe
  78  *      0.29: 31 Aug 2004: Add backup timer for link change notification.
  79  *      0.30: 25 Sep 2004: rx checksum support for nf 250 Gb. Add rx reset
  80  *                         into nv_close, otherwise reenabling for wol can
  81  *                         cause DMA to kfree'd memory.
  82  *      0.31: 14 Nov 2004: ethtool support for getting/setting link
  83  *                         capabilities.
  84  *      0.32: 16 Apr 2005: RX_ERROR4 handling added.
  85  *      0.33: 16 May 2005: Support for MCP51 added.
  86  *      0.34: 18 Jun 2005: Add DEV_NEED_LINKTIMER to all nForce nics.
  87  *      0.35: 26 Jun 2005: Support for MCP55 added.
  88  *      0.36: 28 Jun 2005: Add jumbo frame support.
  89  *      0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
  90  *      0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
  91  *                         per-packet flags.
  92  *      0.39: 18 Jul 2005: Add 64bit descriptor support.
  93  *      0.40: 19 Jul 2005: Add support for mac address change.
  94  *      0.41: 30 Jul 2005: Write back original MAC in nv_close instead
  95  *                         of nv_remove
  96  *      0.42: 06 Aug 2005: Fix lack of link speed initialization
  97  *                         in the second (and later) nv_open call
  98  *      0.43: 10 Aug 2005: Add support for tx checksum.
  99  *
 100  * Known bugs:
 101  * We suspect that on some hardware no TX done interrupts are generated.
 102  * This means recovery from netif_stop_queue only happens if the hw timer
 103  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
 104  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
 105  * If your hardware reliably generates tx done interrupts, then you can remove
 106  * DEV_NEED_TIMERIRQ from the driver_data flags.
 107  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
 108  * superfluous timer interrupts from the nic.
 109  */
 110 #define FORCEDETH_VERSION               "0.43"
 111 #define DRV_NAME                        "forcedeth"
 112
 113 #include <linux/module.h>
 114 #include <linux/types.h>
 115 #include <linux/pci.h>
 116 #include <linux/interrupt.h>
 117 #include <linux/netdevice.h>
 118 #include <linux/etherdevice.h>
 119 #include <linux/delay.h>
 120 #include <linux/spinlock.h>
 121 #include <linux/ethtool.h>
 122 #include <linux/timer.h>
 123 #include <linux/skbuff.h>
 124 #include <linux/mii.h>
 125 #include <linux/random.h>
 126 #include <linux/init.h>
 127 #include <linux/if_vlan.h>
 128
 129 #include <asm/irq.h>
 130 #include <asm/io.h>
 131 #include <asm/uaccess.h>
 132 #include <asm/system.h>
 133
 134 #if 0
 135 #define dprintk                 printk
 136 #else
 137 #define dprintk(x...)           do { } while (0)
 138 #endif
 139
 140
 141 /*
 142  * Hardware access:
 143  */
 144
 145 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 146 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 147 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
 148 #define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 149 #define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 150
 151 enum {
 152         NvRegIrqStatus = 0x000,
 153 #define NVREG_IRQSTAT_MIIEVENT  0x040
 154 #define NVREG_IRQSTAT_MASK              0x1ff
 155         NvRegIrqMask = 0x004,
 156 #define NVREG_IRQ_RX_ERROR              0x0001
 157 #define NVREG_IRQ_RX                    0x0002
 158 #define NVREG_IRQ_RX_NOBUF              0x0004
 159 #define NVREG_IRQ_TX_ERR                0x0008
 160 #define NVREG_IRQ_TX_OK                 0x0010
 161 #define NVREG_IRQ_TIMER                 0x0020
 162 #define NVREG_IRQ_LINK                  0x0040
 163 #define NVREG_IRQ_TX_ERROR              0x0080
 164 #define NVREG_IRQ_TX1                   0x0100
 165 #define NVREG_IRQMASK_WANTED            0x00df
 166
 167 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 168                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_TX_ERROR| \
 169                                         NVREG_IRQ_TX1))
 170
 171         NvRegUnknownSetupReg6 = 0x008,
 172 #define NVREG_UNKSETUP6_VAL             3
 173
 174 /*
 175  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 176  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 177  */
 178         NvRegPollingInterval = 0x00c,
 179 #define NVREG_POLL_DEFAULT      970
 180         NvRegMisc1 = 0x080,
 181 #define NVREG_MISC1_HD          0x02
 182 #define NVREG_MISC1_FORCE       0x3b0f3c
 183
 184         NvRegTransmitterControl = 0x084,
 185 #define NVREG_XMITCTL_START     0x01
 186         NvRegTransmitterStatus = 0x088,
 187 #define NVREG_XMITSTAT_BUSY     0x01
 188
 189         NvRegPacketFilterFlags = 0x8c,
 190 #define NVREG_PFF_ALWAYS        0x7F0008
 191 #define NVREG_PFF_PROMISC       0x80
 192 #define NVREG_PFF_MYADDR        0x20
 193
 194         NvRegOffloadConfig = 0x90,
 195 #define NVREG_OFFLOAD_HOMEPHY   0x601
 196 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 197         NvRegReceiverControl = 0x094,
 198 #define NVREG_RCVCTL_START      0x01
 199         NvRegReceiverStatus = 0x98,
 200 #define NVREG_RCVSTAT_BUSY      0x01
 201
 202         NvRegRandomSeed = 0x9c,
 203 #define NVREG_RNDSEED_MASK      0x00ff
 204 #define NVREG_RNDSEED_FORCE     0x7f00
 205 #define NVREG_RNDSEED_FORCE2    0x2d00
 206 #define NVREG_RNDSEED_FORCE3    0x7400
 207
 208         NvRegUnknownSetupReg1 = 0xA0,
 209 #define NVREG_UNKSETUP1_VAL     0x16070f
 210         NvRegUnknownSetupReg2 = 0xA4,
 211 #define NVREG_UNKSETUP2_VAL     0x16
 212         NvRegMacAddrA = 0xA8,
 213         NvRegMacAddrB = 0xAC,
 214         NvRegMulticastAddrA = 0xB0,
 215 #define NVREG_MCASTADDRA_FORCE  0x01
 216         NvRegMulticastAddrB = 0xB4,
 217         NvRegMulticastMaskA = 0xB8,
 218         NvRegMulticastMaskB = 0xBC,
 219
 220         NvRegPhyInterface = 0xC0,
 221 #define PHY_RGMII               0x10000000
 222
 223         NvRegTxRingPhysAddr = 0x100,
 224         NvRegRxRingPhysAddr = 0x104,
 225         NvRegRingSizes = 0x108,
 226 #define NVREG_RINGSZ_TXSHIFT 0
 227 #define NVREG_RINGSZ_RXSHIFT 16
 228         NvRegUnknownTransmitterReg = 0x10c,
 229         NvRegLinkSpeed = 0x110,
 230 #define NVREG_LINKSPEED_FORCE 0x10000
 231 #define NVREG_LINKSPEED_10      1000
 232 #define NVREG_LINKSPEED_100     100
 233 #define NVREG_LINKSPEED_1000    50
 234 #define NVREG_LINKSPEED_MASK    (0xFFF)
 235         NvRegUnknownSetupReg5 = 0x130,
 236 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 237         NvRegUnknownSetupReg3 = 0x13c,
 238 #define NVREG_UNKSETUP3_VAL1    0x200010
 239         NvRegTxRxControl = 0x144,
 240 #define NVREG_TXRXCTL_KICK      0x0001
 241 #define NVREG_TXRXCTL_BIT1      0x0002
 242 #define NVREG_TXRXCTL_BIT2      0x0004
 243 #define NVREG_TXRXCTL_IDLE      0x0008
 244 #define NVREG_TXRXCTL_RESET     0x0010
 245 #define NVREG_TXRXCTL_RXCHECK   0x0400
 246 #define NVREG_TXRXCTL_DESC_1    0
 247 #define NVREG_TXRXCTL_DESC_2    0x02100
 248 #define NVREG_TXRXCTL_DESC_3    0x02200
 249         NvRegMIIStatus = 0x180,
 250 #define NVREG_MIISTAT_ERROR             0x0001
 251 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 252 #define NVREG_MIISTAT_MASK              0x000f
 253 #define NVREG_MIISTAT_MASK2             0x000f
 254         NvRegUnknownSetupReg4 = 0x184,
 255 #define NVREG_UNKSETUP4_VAL     8
 256
 257         NvRegAdapterControl = 0x188,
 258 #define NVREG_ADAPTCTL_START    0x02
 259 #define NVREG_ADAPTCTL_LINKUP   0x04
 260 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 261 #define NVREG_ADAPTCTL_RUNNING  0x100000
 262 #define NVREG_ADAPTCTL_PHYSHIFT 24
 263         NvRegMIISpeed = 0x18c,
 264 #define NVREG_MIISPEED_BIT8     (1<<8)
 265 #define NVREG_MIIDELAY  5
 266         NvRegMIIControl = 0x190,
 267 #define NVREG_MIICTL_INUSE      0x08000
 268 #define NVREG_MIICTL_WRITE      0x00400
 269 #define NVREG_MIICTL_ADDRSHIFT  5
 270         NvRegMIIData = 0x194,
 271         NvRegWakeUpFlags = 0x200,
 272 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 273 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 274 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 275 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 276 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 277 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 278 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 279 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 280 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 281 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 282 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 283
 284         NvRegPatternCRC = 0x204,
 285         NvRegPatternMask = 0x208,
 286         NvRegPowerCap = 0x268,
 287 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 288 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 289 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 290         NvRegPowerState = 0x26c,
 291 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 292 #define NVREG_POWERSTATE_VALID          0x0100
 293 #define NVREG_POWERSTATE_MASK           0x0003
 294 #define NVREG_POWERSTATE_D0             0x0000
 295 #define NVREG_POWERSTATE_D1             0x0001
 296 #define NVREG_POWERSTATE_D2             0x0002
 297 #define NVREG_POWERSTATE_D3             0x0003
 298 };
 299
 300 /* Big endian: should work, but is untested */
 301 struct ring_desc {
 302         u32 PacketBuffer;
 303         u32 FlagLen;
 304 };
 305
 306 struct ring_desc_ex {
 307         u32 PacketBufferHigh;
 308         u32 PacketBufferLow;
 309         u32 Reserved;
 310         u32 FlagLen;
 311 };
 312
 313 typedef union _ring_type {
 314         struct ring_desc* orig;
 315         struct ring_desc_ex* ex;
 316 } ring_type;
 317
 318 #define FLAG_MASK_V1 0xffff0000
 319 #define FLAG_MASK_V2 0xffffc000
 320 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 321 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 322
 323 #define NV_TX_LASTPACKET        (1<<16)
 324 #define NV_TX_RETRYERROR        (1<<19)
 325 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 326 #define NV_TX_DEFERRED          (1<<26)
 327 #define NV_TX_CARRIERLOST       (1<<27)
 328 #define NV_TX_LATECOLLISION     (1<<28)
 329 #define NV_TX_UNDERFLOW         (1<<29)
 330 #define NV_TX_ERROR             (1<<30)
 331 #define NV_TX_VALID             (1<<31)
 332
 333 #define NV_TX2_LASTPACKET       (1<<29)
 334 #define NV_TX2_RETRYERROR       (1<<18)
 335 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 336 #define NV_TX2_DEFERRED         (1<<25)
 337 #define NV_TX2_CARRIERLOST      (1<<26)
 338 #define NV_TX2_LATECOLLISION    (1<<27)
 339 #define NV_TX2_UNDERFLOW        (1<<28)
 340 /* error and valid are the same for both */
 341 #define NV_TX2_ERROR            (1<<30)
 342 #define NV_TX2_VALID            (1<<31)
 343 #define NV_TX2_CHECKSUM_L3      (1<<27)
 344 #define NV_TX2_CHECKSUM_L4      (1<<26)
 345
 346 #define NV_RX_DESCRIPTORVALID   (1<<16)
 347 #define NV_RX_MISSEDFRAME       (1<<17)
 348 #define NV_RX_SUBSTRACT1        (1<<18)
 349 #define NV_RX_ERROR1            (1<<23)
 350 #define NV_RX_ERROR2            (1<<24)
 351 #define NV_RX_ERROR3            (1<<25)
 352 #define NV_RX_ERROR4            (1<<26)
 353 #define NV_RX_CRCERR            (1<<27)
 354 #define NV_RX_OVERFLOW          (1<<28)
 355 #define NV_RX_FRAMINGERR        (1<<29)
 356 #define NV_RX_ERROR             (1<<30)
 357 #define NV_RX_AVAIL             (1<<31)
 358
 359 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 360 #define NV_RX2_CHECKSUMOK1      (0x10000000)
 361 #define NV_RX2_CHECKSUMOK2      (0x14000000)
 362 #define NV_RX2_CHECKSUMOK3      (0x18000000)
 363 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 364 #define NV_RX2_SUBSTRACT1       (1<<25)
 365 #define NV_RX2_ERROR1           (1<<18)
 366 #define NV_RX2_ERROR2           (1<<19)
 367 #define NV_RX2_ERROR3           (1<<20)
 368 #define NV_RX2_ERROR4           (1<<21)
 369 #define NV_RX2_CRCERR           (1<<22)
 370 #define NV_RX2_OVERFLOW         (1<<23)
 371 #define NV_RX2_FRAMINGERR       (1<<24)
 372 /* error and avail are the same for both */
 373 #define NV_RX2_ERROR            (1<<30)
 374 #define NV_RX2_AVAIL            (1<<31)
 375
 376 /* Miscelaneous hardware related defines: */
 377 #define NV_PCI_REGSZ            0x270
 378
 379 /* various timeout delays: all in usec */
 380 #define NV_TXRX_RESET_DELAY     4
 381 #define NV_TXSTOP_DELAY1        10
 382 #define NV_TXSTOP_DELAY1MAX     500000
 383 #define NV_TXSTOP_DELAY2        100
 384 #define NV_RXSTOP_DELAY1        10
 385 #define NV_RXSTOP_DELAY1MAX     500000
 386 #define NV_RXSTOP_DELAY2        100
 387 #define NV_SETUP5_DELAY         5
 388 #define NV_SETUP5_DELAYMAX      50000
 389 #define NV_POWERUP_DELAY        5
 390 #define NV_POWERUP_DELAYMAX     5000
 391 #define NV_MIIBUSY_DELAY        50
 392 #define NV_MIIPHY_DELAY 10
 393 #define NV_MIIPHY_DELAYMAX      10000
 394
 395 #define NV_WAKEUPPATTERNS       5
 396 #define NV_WAKEUPMASKENTRIES    4
 397
 398 /* General driver defaults */
 399 #define NV_WATCHDOG_TIMEO       (5*HZ)
 400
 401 #define RX_RING         128
 402 #define TX_RING         64
 403 /*
 404  * If your nic mysteriously hangs then try to reduce the limits
 405  * to 1/0: It might be required to set NV_TX_LASTPACKET in the
 406  * last valid ring entry. But this would be impossible to
 407  * implement - probably a disassembly error.
 408  */
 409 #define TX_LIMIT_STOP   63
 410 #define TX_LIMIT_START  62
 411
 412 /* rx/tx mac addr + type + vlan + align + slack*/
 413 #define NV_RX_HEADERS           (64)
 414 /* even more slack. */
 415 #define NV_RX_ALLOC_PAD         (64)
 416
 417 /* maximum mtu size */
 418 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 419 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 420
 421 #define OOM_REFILL      (1+HZ/20)
 422 #define POLL_WAIT       (1+HZ/100)
 423 #define LINK_TIMEOUT    (3*HZ)
 424
 425 /*
 426  * desc_ver values:
 427  * The nic supports three different descriptor types:
 428  * - DESC_VER_1: Original
 429  * - DESC_VER_2: support for jumbo frames.
 430  * - DESC_VER_3: 64-bit format.
 431  */
 432 #define DESC_VER_1      1
 433 #define DESC_VER_2      2
 434 #define DESC_VER_3      3
 435
 436 /* PHY defines */
 437 #define PHY_OUI_MARVELL 0x5043
 438 #define PHY_OUI_CICADA  0x03f1
 439 #define PHYID1_OUI_MASK 0x03ff
 440 #define PHYID1_OUI_SHFT 6
 441 #define PHYID2_OUI_MASK 0xfc00
 442 #define PHYID2_OUI_SHFT 10
 443 #define PHY_INIT1       0x0f000
 444 #define PHY_INIT2       0x0e00
 445 #define PHY_INIT3       0x01000
 446 #define PHY_INIT4       0x0200
 447 #define PHY_INIT5       0x0004
 448 #define PHY_INIT6       0x02000
 449 #define PHY_GIGABIT     0x0100
 450
 451 #define PHY_TIMEOUT     0x1
 452 #define PHY_ERROR       0x2
 453
 454 #define PHY_100 0x1
 455 #define PHY_1000        0x2
 456 #define PHY_HALF        0x100
 457
 458 /* FIXME: MII defines that should be added to <linux/mii.h> */
 459 #define MII_1000BT_CR   0x09
 460 #define MII_1000BT_SR   0x0a
 461 #define ADVERTISE_1000FULL      0x0200
 462 #define ADVERTISE_1000HALF      0x0100
 463 #define LPA_1000FULL    0x0800
 464 #define LPA_1000HALF    0x0400
 465
 466
 467 /*
 468  * SMP locking:
 469  * All hardware access under dev->priv->lock, except the performance
 470  * critical parts:
 471  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 472  *      by the arch code for interrupts.
 473  * - tx setup is lockless: it relies on dev->xmit_lock. Actual submission
 474  *      needs dev->priv->lock :-(
 475  * - set_multicast_list: preparation lockless, relies on dev->xmit_lock.
 476  */
 477
 478 /* in dev: base, irq */
 479 struct fe_priv {
 480         spinlock_t lock;
 481
 482         /* General data:
 483          * Locking: spin_lock(&np->lock); */
 484         struct net_device_stats stats;
 485         int in_shutdown;
 486         u32 linkspeed;
 487         int duplex;
 488         int autoneg;
 489         int fixed_mode;
 490         int phyaddr;
 491         int wolenabled;
 492         unsigned int phy_oui;
 493         u16 gigabit;
 494
 495         /* General data: RO fields */
 496         dma_addr_t ring_addr;
 497         struct pci_dev *pci_dev;
 498         u32 orig_mac[2];
 499         u32 irqmask;
 500         u32 desc_ver;
 501         u32 txrxctl_bits;
 502
 503         void __iomem *base;
 504
 505         /* rx specific fields.
 506          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 507          */
 508         ring_type rx_ring;
 509         unsigned int cur_rx, refill_rx;
 510         struct sk_buff *rx_skbuff[RX_RING];
 511         dma_addr_t rx_dma[RX_RING];
 512         unsigned int rx_buf_sz;
 513         unsigned int pkt_limit;
 514         struct timer_list oom_kick;
 515         struct timer_list nic_poll;
 516
 517         /* media detection workaround.
 518          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 519          */
 520         int need_linktimer;
 521         unsigned long link_timeout;
 522         /*
 523          * tx specific fields.
 524          */
 525         ring_type tx_ring;
 526         unsigned int next_tx, nic_tx;
 527         struct sk_buff *tx_skbuff[TX_RING];
 528         dma_addr_t tx_dma[TX_RING];
 529         u32 tx_flags;
 530 };
 531
 532 /*
 533  * Maximum number of loops until we assume that a bit in the irq mask
 534  * is stuck. Overridable with module param.
 535  */
 536 static int max_interrupt_work = 5;
 537
 538 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 539 {
 540         return netdev_priv(dev);
 541 }
 542
 543 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 544 {
 545         return get_nvpriv(dev)->base;
 546 }
 547
 548 static inline void pci_push(u8 __iomem *base)
 549 {
 550         /* force out pending posted writes */
 551         readl(base);
 552 }
 553
 554 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 555 {
 556         return le32_to_cpu(prd->FlagLen)
 557                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 558 }
 559
 560 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 561 {
 562         return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
 563 }
 564
 565 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 566                                 int delay, int delaymax, const char *msg)
 567 {
 568         u8 __iomem *base = get_hwbase(dev);
 569
 570         pci_push(base);
 571         do {
 572                 udelay(delay);
 573                 delaymax -= delay;
 574                 if (delaymax < 0) {
 575                         if (msg)
 576                                 printk(msg);
 577                         return 1;
 578                 }
 579         } while ((readl(base + offset) & mask) != target);
 580         return 0;
 581 }
 582
 583 #define MII_READ        (-1)
 584 /* mii_rw: read/write a register on the PHY.
 585  *
 586  * Caller must guarantee serialization
 587  */
 588 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
 589 {
 590         u8 __iomem *base = get_hwbase(dev);
 591         u32 reg;
 592         int retval;
 593
 594         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
 595
 596         reg = readl(base + NvRegMIIControl);
 597         if (reg & NVREG_MIICTL_INUSE) {
 598                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
 599                 udelay(NV_MIIBUSY_DELAY);
 600         }
 601
 602         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
 603         if (value != MII_READ) {
 604                 writel(value, base + NvRegMIIData);
 605                 reg |= NVREG_MIICTL_WRITE;
 606         }
 607         writel(reg, base + NvRegMIIControl);
 608
 609         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
 610                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
 611                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
 612                                 dev->name, miireg, addr);
 613                 retval = -1;
 614         } else if (value != MII_READ) {
 615                 /* it was a write operation - fewer failures are detectable */
 616                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
 617                                 dev->name, value, miireg, addr);
 618                 retval = 0;
 619         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
 620                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
 621                                 dev->name, miireg, addr);
 622                 retval = -1;
 623         } else {
 624                 retval = readl(base + NvRegMIIData);
 625                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
 626                                 dev->name, miireg, addr, retval);
 627         }
 628
 629         return retval;
 630 }
 631
 632 static int phy_reset(struct net_device *dev)
 633 {
 634         struct fe_priv *np = get_nvpriv(dev);
 635         u32 miicontrol;
 636         unsigned int tries = 0;
 637
 638         miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 639         miicontrol |= BMCR_RESET;
 640         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
 641                 return -1;
 642         }
 643
 644         /* wait for 500ms */
 645         msleep(500);
 646
 647         /* must wait till reset is deasserted */
 648         while (miicontrol & BMCR_RESET) {
 649                 msleep(10);
 650                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 651                 /* FIXME: 100 tries seem excessive */
 652                 if (tries++ > 100)
 653                         return -1;
 654         }
 655         return 0;
 656 }
 657
 658 static int phy_init(struct net_device *dev)
 659 {
 660         struct fe_priv *np = get_nvpriv(dev);
 661         u8 __iomem *base = get_hwbase(dev);
 662         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
 663
 664         /* set advertise register */
 665         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
 666         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|0x800|0x400);
 667         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
 668                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
 669                 return PHY_ERROR;
 670         }
 671
 672         /* get phy interface type */
 673         phyinterface = readl(base + NvRegPhyInterface);
 674
 675         /* see if gigabit phy */
 676         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
 677         if (mii_status & PHY_GIGABIT) {
 678                 np->gigabit = PHY_GIGABIT;
 679                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
 680                 mii_control_1000 &= ~ADVERTISE_1000HALF;
 681                 if (phyinterface & PHY_RGMII)
 682                         mii_control_1000 |= ADVERTISE_1000FULL;
 683                 else
 684                         mii_control_1000 &= ~ADVERTISE_1000FULL;
 685
 686                 if (mii_rw(dev, np->phyaddr, MII_1000BT_CR, mii_control_1000)) {
 687                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 688                         return PHY_ERROR;
 689                 }
 690         }
 691         else
 692                 np->gigabit = 0;
 693
 694         /* reset the phy */
 695         if (phy_reset(dev)) {
 696                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
 697                 return PHY_ERROR;
 698         }
 699
 700         /* phy vendor specific configuration */
 701         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
 702                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
 703                 phy_reserved &= ~(PHY_INIT1 | PHY_INIT2);
 704                 phy_reserved |= (PHY_INIT3 | PHY_INIT4);
 705                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
 706                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 707                         return PHY_ERROR;
 708                 }
 709                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
 710                 phy_reserved |= PHY_INIT5;
 711                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
 712                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 713                         return PHY_ERROR;
 714                 }
 715         }
 716         if (np->phy_oui == PHY_OUI_CICADA) {
 717                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
 718                 phy_reserved |= PHY_INIT6;
 719                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
 720                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 721                         return PHY_ERROR;
 722                 }
 723         }
 724
 725         /* restart auto negotiation */
 726         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 727         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
 728         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
 729                 return PHY_ERROR;
 730         }
 731
 732         return 0;
 733 }
 734
 735 static void nv_start_rx(struct net_device *dev)
 736 {
 737         struct fe_priv *np = get_nvpriv(dev);
 738         u8 __iomem *base = get_hwbase(dev);
 739
 740         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
 741         /* Already running? Stop it. */
 742         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
 743                 writel(0, base + NvRegReceiverControl);
 744                 pci_push(base);
 745         }
 746         writel(np->linkspeed, base + NvRegLinkSpeed);
 747         pci_push(base);
 748         writel(NVREG_RCVCTL_START, base + NvRegReceiverControl);
 749         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
 750                                 dev->name, np->duplex, np->linkspeed);
 751         pci_push(base);
 752 }
 753
 754 static void nv_stop_rx(struct net_device *dev)
 755 {
 756         u8 __iomem *base = get_hwbase(dev);
 757
 758         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
 759         writel(0, base + NvRegReceiverControl);
 760         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
 761                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
 762                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
 763
 764         udelay(NV_RXSTOP_DELAY2);
 765         writel(0, base + NvRegLinkSpeed);
 766 }
 767
 768 static void nv_start_tx(struct net_device *dev)
 769 {
 770         u8 __iomem *base = get_hwbase(dev);
 771
 772         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
 773         writel(NVREG_XMITCTL_START, base + NvRegTransmitterControl);
 774         pci_push(base);
 775 }
 776
 777 static void nv_stop_tx(struct net_device *dev)
 778 {
 779         u8 __iomem *base = get_hwbase(dev);
 780
 781         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
 782         writel(0, base + NvRegTransmitterControl);
 783         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
 784                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
 785                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
 786
 787         udelay(NV_TXSTOP_DELAY2);
 788         writel(0, base + NvRegUnknownTransmitterReg);
 789 }
 790
 791 static void nv_txrx_reset(struct net_device *dev)
 792 {
 793         struct fe_priv *np = get_nvpriv(dev);
 794         u8 __iomem *base = get_hwbase(dev);
 795
 796         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
 797         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
 798         pci_push(base);
 799         udelay(NV_TXRX_RESET_DELAY);
 800         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
 801         pci_push(base);
 802 }
 803
 804 /*
 805  * nv_get_stats: dev->get_stats function
 806  * Get latest stats value from the nic.
 807  * Called with read_lock(&dev_base_lock) held for read -
 808  * only synchronized against unregister_netdevice.
 809  */
 810 static struct net_device_stats *nv_get_stats(struct net_device *dev)
 811 {
 812         struct fe_priv *np = get_nvpriv(dev);
 813
 814         /* It seems that the nic always generates interrupts and doesn't
 815          * accumulate errors internally. Thus the current values in np->stats
 816          * are already up to date.
 817          */
 818         return &np->stats;
 819 }
 820
 821 /*
 822  * nv_alloc_rx: fill rx ring entries.
 823  * Return 1 if the allocations for the skbs failed and the
 824  * rx engine is without Available descriptors
 825  */
 826 static int nv_alloc_rx(struct net_device *dev)
 827 {
 828         struct fe_priv *np = get_nvpriv(dev);
 829         unsigned int refill_rx = np->refill_rx;
 830         int nr;
 831
 832         while (np->cur_rx != refill_rx) {
 833                 struct sk_buff *skb;
 834
 835                 nr = refill_rx % RX_RING;
 836                 if (np->rx_skbuff[nr] == NULL) {
 837
 838                         skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
 839                         if (!skb)
 840                                 break;
 841
 842                         skb->dev = dev;
 843                         np->rx_skbuff[nr] = skb;
 844                 } else {
 845                         skb = np->rx_skbuff[nr];
 846                 }
 847                 np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, skb->len,
 848                                                 PCI_DMA_FROMDEVICE);
 849                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 850                         np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
 851                         wmb();
 852                         np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
 853                 } else {
 854                         np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
 855                         np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
 856                         wmb();
 857                         np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
 858                 }
 859                 dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
 860                                         dev->name, refill_rx);
 861                 refill_rx++;
 862         }
 863         np->refill_rx = refill_rx;
 864         if (np->cur_rx - refill_rx == RX_RING)
 865                 return 1;
 866         return 0;
 867 }
 868
 869 static void nv_do_rx_refill(unsigned long data)
 870 {
 871         struct net_device *dev = (struct net_device *) data;
 872         struct fe_priv *np = get_nvpriv(dev);
 873
 874         disable_irq(dev->irq);
 875         if (nv_alloc_rx(dev)) {
 876                 spin_lock(&np->lock);
 877                 if (!np->in_shutdown)
 878                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
 879                 spin_unlock(&np->lock);
 880         }
 881         enable_irq(dev->irq);
 882 }
 883
 884 static void nv_init_rx(struct net_device *dev)
 885 {
 886         struct fe_priv *np = get_nvpriv(dev);
 887         int i;
 888
 889         np->cur_rx = RX_RING;
 890         np->refill_rx = 0;
 891         for (i = 0; i < RX_RING; i++)
 892                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 893                         np->rx_ring.orig[i].FlagLen = 0;
 894                 else
 895                         np->rx_ring.ex[i].FlagLen = 0;
 896 }
 897
 898 static void nv_init_tx(struct net_device *dev)
 899 {
 900         struct fe_priv *np = get_nvpriv(dev);
 901         int i;
 902
 903         np->next_tx = np->nic_tx = 0;
 904         for (i = 0; i < TX_RING; i++)
 905                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 906                         np->tx_ring.orig[i].FlagLen = 0;
 907                 else
 908                         np->tx_ring.ex[i].FlagLen = 0;
 909 }
 910
 911 static int nv_init_ring(struct net_device *dev)
 912 {
 913         nv_init_tx(dev);
 914         nv_init_rx(dev);
 915         return nv_alloc_rx(dev);
 916 }
 917
 918 static void nv_drain_tx(struct net_device *dev)
 919 {
 920         struct fe_priv *np = get_nvpriv(dev);
 921         int i;
 922         for (i = 0; i < TX_RING; i++) {
 923                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 924                         np->tx_ring.orig[i].FlagLen = 0;
 925                 else
 926                         np->tx_ring.ex[i].FlagLen = 0;
 927                 if (np->tx_skbuff[i]) {
 928                         pci_unmap_single(np->pci_dev, np->tx_dma[i],
 929                                                 np->tx_skbuff[i]->len,
 930                                                 PCI_DMA_TODEVICE);
 931                         dev_kfree_skb(np->tx_skbuff[i]);
 932                         np->tx_skbuff[i] = NULL;
 933                         np->stats.tx_dropped++;
 934                 }
 935         }
 936 }
 937
 938 static void nv_drain_rx(struct net_device *dev)
 939 {
 940         struct fe_priv *np = get_nvpriv(dev);
 941         int i;
 942         for (i = 0; i < RX_RING; i++) {
 943                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 944                         np->rx_ring.orig[i].FlagLen = 0;
 945                 else
 946                         np->rx_ring.ex[i].FlagLen = 0;
 947                 wmb();
 948                 if (np->rx_skbuff[i]) {
 949                         pci_unmap_single(np->pci_dev, np->rx_dma[i],
 950                                                 np->rx_skbuff[i]->len,
 951                                                 PCI_DMA_FROMDEVICE);
 952                         dev_kfree_skb(np->rx_skbuff[i]);
 953                         np->rx_skbuff[i] = NULL;
 954                 }
 955         }
 956 }
 957
 958 static void drain_ring(struct net_device *dev)
 959 {
 960         nv_drain_tx(dev);
 961         nv_drain_rx(dev);
 962 }
 963
 964 /*
 965  * nv_start_xmit: dev->hard_start_xmit function
 966  * Called with dev->xmit_lock held.
 967  */
 968 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
 969 {
 970         struct fe_priv *np = get_nvpriv(dev);
 971         int nr = np->next_tx % TX_RING;
 972         u32 tx_checksum = (skb->ip_summed == CHECKSUM_HW ? (NV_TX2_CHECKSUM_L3|NV_TX2_CHECKSUM_L4) : 0);
 973
 974         np->tx_skbuff[nr] = skb;
 975         np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data,skb->len,
 976                                         PCI_DMA_TODEVICE);
 977
 978         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 979                 np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
 980         else {
 981                 np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
 982                 np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
 983         }
 984
 985         spin_lock_irq(&np->lock);
 986         wmb();
 987         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 988                 np->tx_ring.orig[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags | tx_checksum);
 989         else
 990                 np->tx_ring.ex[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags | tx_checksum);
 991         dprintk(KERN_DEBUG "%s: nv_start_xmit: packet packet %d queued for transmission\n",
 992                                 dev->name, np->next_tx);
 993         {
 994                 int j;
 995                 for (j=0; j<64; j++) {
 996                         if ((j%16) == 0)
 997                                 dprintk("\n%03x:", j);
 998                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
 999                 }
1000                 dprintk("\n");
1001         }
1002
1003         np->next_tx++;
1004
1005         dev->trans_start = jiffies;
1006         if (np->next_tx - np->nic_tx >= TX_LIMIT_STOP)
1007                 netif_stop_queue(dev);
1008         spin_unlock_irq(&np->lock);
1009         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1010         pci_push(get_hwbase(dev));
1011         return 0;
1012 }
1013
1014 /*
1015  * nv_tx_done: check for completed packets, release the skbs.
1016  *
1017  * Caller must own np->lock.
1018  */
1019 static void nv_tx_done(struct net_device *dev)
1020 {
1021         struct fe_priv *np = get_nvpriv(dev);
1022         u32 Flags;
1023         int i;
1024
1025         while (np->nic_tx != np->next_tx) {
1026                 i = np->nic_tx % TX_RING;
1027
1028                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1029                         Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
1030                 else
1031                         Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
1032
1033                 dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
1034                                         dev->name, np->nic_tx, Flags);
1035                 if (Flags & NV_TX_VALID)
1036                         break;
1037                 if (np->desc_ver == DESC_VER_1) {
1038                         if (Flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
1039                                                         NV_TX_UNDERFLOW|NV_TX_ERROR)) {
1040                                 if (Flags & NV_TX_UNDERFLOW)
1041                                         np->stats.tx_fifo_errors++;
1042                                 if (Flags & NV_TX_CARRIERLOST)
1043                                         np->stats.tx_carrier_errors++;
1044                                 np->stats.tx_errors++;
1045                         } else {
1046                                 np->stats.tx_packets++;
1047                                 np->stats.tx_bytes += np->tx_skbuff[i]->len;
1048                         }
1049                 } else {
1050                         if (Flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
1051                                                         NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
1052                                 if (Flags & NV_TX2_UNDERFLOW)
1053                                         np->stats.tx_fifo_errors++;
1054                                 if (Flags & NV_TX2_CARRIERLOST)
1055                                         np->stats.tx_carrier_errors++;
1056                                 np->stats.tx_errors++;
1057                         } else {
1058                                 np->stats.tx_packets++;
1059                                 np->stats.tx_bytes += np->tx_skbuff[i]->len;
1060                         }
1061                 }
1062                 pci_unmap_single(np->pci_dev, np->tx_dma[i],
1063                                         np->tx_skbuff[i]->len,
1064                                         PCI_DMA_TODEVICE);
1065                 dev_kfree_skb_irq(np->tx_skbuff[i]);
1066                 np->tx_skbuff[i] = NULL;
1067                 np->nic_tx++;
1068         }
1069         if (np->next_tx - np->nic_tx < TX_LIMIT_START)
1070                 netif_wake_queue(dev);
1071 }
1072
1073 /*
1074  * nv_tx_timeout: dev->tx_timeout function
1075  * Called with dev->xmit_lock held.
1076  */
1077 static void nv_tx_timeout(struct net_device *dev)
1078 {
1079         struct fe_priv *np = get_nvpriv(dev);
1080         u8 __iomem *base = get_hwbase(dev);
1081
1082         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name,
1083                         readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK);
1084
1085         {
1086                 int i;
1087
1088                 printk(KERN_INFO "%s: Ring at %lx: next %d nic %d\n",
1089                                 dev->name, (unsigned long)np->ring_addr,
1090                                 np->next_tx, np->nic_tx);
1091                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
1092                 for (i=0;i<0x400;i+= 32) {
1093                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
1094                                         i,
1095                                         readl(base + i + 0), readl(base + i + 4),
1096                                         readl(base + i + 8), readl(base + i + 12),
1097                                         readl(base + i + 16), readl(base + i + 20),
1098                                         readl(base + i + 24), readl(base + i + 28));
1099                 }
1100                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
1101                 for (i=0;i<TX_RING;i+= 4) {
1102                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1103                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
1104                                        i,
1105                                        le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
1106                                        le32_to_cpu(np->tx_ring.orig[i].FlagLen),
1107                                        le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
1108                                        le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
1109                                        le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
1110                                        le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
1111                                        le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
1112                                        le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
1113                         } else {
1114                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
1115                                        i,
1116                                        le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
1117                                        le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
1118                                        le32_to_cpu(np->tx_ring.ex[i].FlagLen),
1119                                        le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
1120                                        le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
1121                                        le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
1122                                        le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
1123                                        le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
1124                                        le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
1125                                        le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
1126                                        le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
1127                                        le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
1128                         }
1129                 }
1130         }
1131
1132         spin_lock_irq(&np->lock);
1133
1134         /* 1) stop tx engine */
1135         nv_stop_tx(dev);
1136
1137         /* 2) check that the packets were not sent already: */
1138         nv_tx_done(dev);
1139
1140         /* 3) if there are dead entries: clear everything */
1141         if (np->next_tx != np->nic_tx) {
1142                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
1143                 nv_drain_tx(dev);
1144                 np->next_tx = np->nic_tx = 0;
1145                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1146                         writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1147                 else
1148                         writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1149                 netif_wake_queue(dev);
1150         }
1151
1152         /* 4) restart tx engine */
1153         nv_start_tx(dev);
1154         spin_unlock_irq(&np->lock);
1155 }
1156
1157 /*
1158  * Called when the nic notices a mismatch between the actual data len on the
1159  * wire and the len indicated in the 802 header
1160  */
1161 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
1162 {
1163         int hdrlen;     /* length of the 802 header */
1164         int protolen;   /* length as stored in the proto field */
1165
1166         /* 1) calculate len according to header */
1167         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
1168                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
1169                 hdrlen = VLAN_HLEN;
1170         } else {
1171                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
1172                 hdrlen = ETH_HLEN;
1173         }
1174         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
1175                                 dev->name, datalen, protolen, hdrlen);
1176         if (protolen > ETH_DATA_LEN)
1177                 return datalen; /* Value in proto field not a len, no checks possible */
1178
1179         protolen += hdrlen;
1180         /* consistency checks: */
1181         if (datalen > ETH_ZLEN) {
1182                 if (datalen >= protolen) {
1183                         /* more data on wire than in 802 header, trim of
1184                          * additional data.
1185                          */
1186                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1187                                         dev->name, protolen);
1188                         return protolen;
1189                 } else {
1190                         /* less data on wire than mentioned in header.
1191                          * Discard the packet.
1192                          */
1193                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
1194                                         dev->name);
1195                         return -1;
1196                 }
1197         } else {
1198                 /* short packet. Accept only if 802 values are also short */
1199                 if (protolen > ETH_ZLEN) {
1200                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
1201                                         dev->name);
1202                         return -1;
1203                 }
1204                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1205                                 dev->name, datalen);
1206                 return datalen;
1207         }
1208 }
1209
1210 static void nv_rx_process(struct net_device *dev)
1211 {
1212         struct fe_priv *np = get_nvpriv(dev);
1213         u32 Flags;
1214
1215         for (;;) {
1216                 struct sk_buff *skb;
1217                 int len;
1218                 int i;
1219                 if (np->cur_rx - np->refill_rx >= RX_RING)
1220                         break;  /* we scanned the whole ring - do not continue */
1221
1222                 i = np->cur_rx % RX_RING;
1223                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1224                         Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
1225                         len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
1226                 } else {
1227                         Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
1228                         len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
1229                 }
1230
1231                 dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
1232                                         dev->name, np->cur_rx, Flags);
1233
1234                 if (Flags & NV_RX_AVAIL)
1235                         break;  /* still owned by hardware, */
1236
1237                 /*
1238                  * the packet is for us - immediately tear down the pci mapping.
1239                  * TODO: check if a prefetch of the first cacheline improves
1240                  * the performance.
1241                  */
1242                 pci_unmap_single(np->pci_dev, np->rx_dma[i],
1243                                 np->rx_skbuff[i]->len,
1244                                 PCI_DMA_FROMDEVICE);
1245
1246                 {
1247                         int j;
1248                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",Flags);
1249                         for (j=0; j<64; j++) {
1250                                 if ((j%16) == 0)
1251                                         dprintk("\n%03x:", j);
1252                                 dprintk(" %02x", ((unsigned char*)np->rx_skbuff[i]->data)[j]);
1253                         }
1254                         dprintk("\n");
1255                 }
1256                 /* look at what we actually got: */
1257                 if (np->desc_ver == DESC_VER_1) {
1258                         if (!(Flags & NV_RX_DESCRIPTORVALID))
1259                                 goto next_pkt;
1260
1261                         if (Flags & NV_RX_MISSEDFRAME) {
1262                                 np->stats.rx_missed_errors++;
1263                                 np->stats.rx_errors++;
1264                                 goto next_pkt;
1265                         }
1266                         if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
1267                                 np->stats.rx_errors++;
1268                                 goto next_pkt;
1269                         }
1270                         if (Flags & NV_RX_CRCERR) {
1271                                 np->stats.rx_crc_errors++;
1272                                 np->stats.rx_errors++;
1273                                 goto next_pkt;
1274                         }
1275                         if (Flags & NV_RX_OVERFLOW) {
1276                                 np->stats.rx_over_errors++;
1277                                 np->stats.rx_errors++;
1278                                 goto next_pkt;
1279                         }
1280                         if (Flags & NV_RX_ERROR4) {
1281                                 len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1282                                 if (len < 0) {
1283                                         np->stats.rx_errors++;
1284                                         goto next_pkt;
1285                                 }
1286                         }
1287                         /* framing errors are soft errors. */
1288                         if (Flags & NV_RX_FRAMINGERR) {
1289                                 if (Flags & NV_RX_SUBSTRACT1) {
1290                                         len--;
1291                                 }
1292                         }
1293                 } else {
1294                         if (!(Flags & NV_RX2_DESCRIPTORVALID))
1295                                 goto next_pkt;
1296
1297                         if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
1298                                 np->stats.rx_errors++;
1299                                 goto next_pkt;
1300                         }
1301                         if (Flags & NV_RX2_CRCERR) {
1302                                 np->stats.rx_crc_errors++;
1303                                 np->stats.rx_errors++;
1304                                 goto next_pkt;
1305                         }
1306                         if (Flags & NV_RX2_OVERFLOW) {
1307                                 np->stats.rx_over_errors++;
1308                                 np->stats.rx_errors++;
1309                                 goto next_pkt;
1310                         }
1311                         if (Flags & NV_RX2_ERROR4) {
1312                                 len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1313                                 if (len < 0) {
1314                                         np->stats.rx_errors++;
1315                                         goto next_pkt;
1316                                 }
1317                         }
1318                         /* framing errors are soft errors */
1319                         if (Flags & NV_RX2_FRAMINGERR) {
1320                                 if (Flags & NV_RX2_SUBSTRACT1) {
1321                                         len--;
1322                                 }
1323                         }
1324                         Flags &= NV_RX2_CHECKSUMMASK;
1325                         if (Flags == NV_RX2_CHECKSUMOK1 ||
1326                                         Flags == NV_RX2_CHECKSUMOK2 ||
1327                                         Flags == NV_RX2_CHECKSUMOK3) {
1328                                 dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
1329                                 np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
1330                         } else {
1331                                 dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);
1332                         }
1333                 }
1334                 /* got a valid packet - forward it to the network core */
1335                 skb = np->rx_skbuff[i];
1336                 np->rx_skbuff[i] = NULL;
1337
1338                 skb_put(skb, len);
1339                 skb->protocol = eth_type_trans(skb, dev);
1340                 dprintk(KERN_DEBUG "%s: nv_rx_process: packet %d with %d bytes, proto %d accepted.\n",
1341                                         dev->name, np->cur_rx, len, skb->protocol);
1342                 netif_rx(skb);
1343                 dev->last_rx = jiffies;
1344                 np->stats.rx_packets++;
1345                 np->stats.rx_bytes += len;
1346 next_pkt:
1347                 np->cur_rx++;
1348         }
1349 }
1350
1351 static void set_bufsize(struct net_device *dev)
1352 {
1353         struct fe_priv *np = netdev_priv(dev);
1354
1355         if (dev->mtu <= ETH_DATA_LEN)
1356                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
1357         else
1358                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
1359 }
1360
1361 /*
1362  * nv_change_mtu: dev->change_mtu function
1363  * Called with dev_base_lock held for read.
1364  */
1365 static int nv_change_mtu(struct net_device *dev, int new_mtu)
1366 {
1367         struct fe_priv *np = get_nvpriv(dev);
1368         int old_mtu;
1369
1370         if (new_mtu < 64 || new_mtu > np->pkt_limit)
1371                 return -EINVAL;
1372
1373         old_mtu = dev->mtu;
1374         dev->mtu = new_mtu;
1375
1376         /* return early if the buffer sizes will not change */
1377         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
1378                 return 0;
1379         if (old_mtu == new_mtu)
1380                 return 0;
1381
1382         /* synchronized against open : rtnl_lock() held by caller */
1383         if (netif_running(dev)) {
1384                 u8 __iomem *base = get_hwbase(dev);
1385                 /*
1386                  * It seems that the nic preloads valid ring entries into an
1387                  * internal buffer. The procedure for flushing everything is
1388                  * guessed, there is probably a simpler approach.
1389                  * Changing the MTU is a rare event, it shouldn't matter.
1390                  */
1391                 disable_irq(dev->irq);
1392                 spin_lock_bh(&dev->xmit_lock);
1393                 spin_lock(&np->lock);
1394                 /* stop engines */
1395                 nv_stop_rx(dev);
1396                 nv_stop_tx(dev);
1397                 nv_txrx_reset(dev);
1398                 /* drain rx queue */
1399                 nv_drain_rx(dev);
1400                 nv_drain_tx(dev);
1401                 /* reinit driver view of the rx queue */
1402                 nv_init_rx(dev);
1403                 nv_init_tx(dev);
1404                 /* alloc new rx buffers */
1405                 set_bufsize(dev);
1406                 if (nv_alloc_rx(dev)) {
1407                         if (!np->in_shutdown)
1408                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1409                 }
1410                 /* reinit nic view of the rx queue */
1411                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
1412                 writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
1413                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1414                         writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1415                 else
1416                         writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1417                 writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
1418                         base + NvRegRingSizes);
1419                 pci_push(base);
1420                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1421                 pci_push(base);
1422
1423                 /* restart rx engine */
1424                 nv_start_rx(dev);
1425                 nv_start_tx(dev);
1426                 spin_unlock(&np->lock);
1427                 spin_unlock_bh(&dev->xmit_lock);
1428                 enable_irq(dev->irq);
1429         }
1430         return 0;
1431 }
1432
1433 static void nv_copy_mac_to_hw(struct net_device *dev)
1434 {
1435         u8 __iomem *base = get_hwbase(dev);
1436         u32 mac[2];
1437
1438         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
1439                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
1440         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
1441
1442         writel(mac[0], base + NvRegMacAddrA);
1443         writel(mac[1], base + NvRegMacAddrB);
1444 }
1445
1446 /*
1447  * nv_set_mac_address: dev->set_mac_address function
1448  * Called with rtnl_lock() held.
1449  */
1450 static int nv_set_mac_address(struct net_device *dev, void *addr)
1451 {
1452         struct fe_priv *np = get_nvpriv(dev);
1453         struct sockaddr *macaddr = (struct sockaddr*)addr;
1454
1455         if(!is_valid_ether_addr(macaddr->sa_data))
1456                 return -EADDRNOTAVAIL;
1457
1458         /* synchronized against open : rtnl_lock() held by caller */
1459         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
1460
1461         if (netif_running(dev)) {
1462                 spin_lock_bh(&dev->xmit_lock);
1463                 spin_lock_irq(&np->lock);
1464
1465                 /* stop rx engine */
1466                 nv_stop_rx(dev);
1467
1468                 /* set mac address */
1469                 nv_copy_mac_to_hw(dev);
1470
1471                 /* restart rx engine */
1472                 nv_start_rx(dev);
1473                 spin_unlock_irq(&np->lock);
1474                 spin_unlock_bh(&dev->xmit_lock);
1475         } else {
1476                 nv_copy_mac_to_hw(dev);
1477         }
1478         return 0;
1479 }
1480
1481 /*
1482  * nv_set_multicast: dev->set_multicast function
1483  * Called with dev->xmit_lock held.
1484  */
1485 static void nv_set_multicast(struct net_device *dev)
1486 {
1487         struct fe_priv *np = get_nvpriv(dev);
1488         u8 __iomem *base = get_hwbase(dev);
1489         u32 addr[2];
1490         u32 mask[2];
1491         u32 pff;
1492
1493         memset(addr, 0, sizeof(addr));
1494         memset(mask, 0, sizeof(mask));
1495
1496         if (dev->flags & IFF_PROMISC) {
1497                 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name);
1498                 pff = NVREG_PFF_PROMISC;
1499         } else {
1500                 pff = NVREG_PFF_MYADDR;
1501
1502                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
1503                         u32 alwaysOff[2];
1504                         u32 alwaysOn[2];
1505
1506                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
1507                         if (dev->flags & IFF_ALLMULTI) {
1508                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
1509                         } else {
1510                                 struct dev_mc_list *walk;
1511
1512                                 walk = dev->mc_list;
1513                                 while (walk != NULL) {
1514                                         u32 a, b;
1515                                         a = le32_to_cpu(*(u32 *) walk->dmi_addr);
1516                                         b = le16_to_cpu(*(u16 *) (&walk->dmi_addr[4]));
1517                                         alwaysOn[0] &= a;
1518                                         alwaysOff[0] &= ~a;
1519                                         alwaysOn[1] &= b;
1520                                         alwaysOff[1] &= ~b;
1521                                         walk = walk->next;
1522                                 }
1523                         }
1524                         addr[0] = alwaysOn[0];
1525                         addr[1] = alwaysOn[1];
1526                         mask[0] = alwaysOn[0] | alwaysOff[0];
1527                         mask[1] = alwaysOn[1] | alwaysOff[1];
1528                 }
1529         }
1530         addr[0] |= NVREG_MCASTADDRA_FORCE;
1531         pff |= NVREG_PFF_ALWAYS;
1532         spin_lock_irq(&np->lock);
1533         nv_stop_rx(dev);
1534         writel(addr[0], base + NvRegMulticastAddrA);
1535         writel(addr[1], base + NvRegMulticastAddrB);
1536         writel(mask[0], base + NvRegMulticastMaskA);
1537         writel(mask[1], base + NvRegMulticastMaskB);
1538         writel(pff, base + NvRegPacketFilterFlags);
1539         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
1540                 dev->name);
1541         nv_start_rx(dev);
1542         spin_unlock_irq(&np->lock);
1543 }
1544
1545 static int nv_update_linkspeed(struct net_device *dev)
1546 {
1547         struct fe_priv *np = get_nvpriv(dev);
1548         u8 __iomem *base = get_hwbase(dev);
1549         int adv, lpa;
1550         int newls = np->linkspeed;
1551         int newdup = np->duplex;
1552         int mii_status;
1553         int retval = 0;
1554         u32 control_1000, status_1000, phyreg;
1555
1556         /* BMSR_LSTATUS is latched, read it twice:
1557          * we want the current value.
1558          */
1559         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1560         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1561
1562         if (!(mii_status & BMSR_LSTATUS)) {
1563                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
1564                                 dev->name);
1565                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1566                 newdup = 0;
1567                 retval = 0;
1568                 goto set_speed;
1569         }
1570
1571         if (np->autoneg == 0) {
1572                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
1573                                 dev->name, np->fixed_mode);
1574                 if (np->fixed_mode & LPA_100FULL) {
1575                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1576                         newdup = 1;
1577                 } else if (np->fixed_mode & LPA_100HALF) {
1578                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1579                         newdup = 0;
1580                 } else if (np->fixed_mode & LPA_10FULL) {
1581                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1582                         newdup = 1;
1583                 } else {
1584                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1585                         newdup = 0;
1586                 }
1587                 retval = 1;
1588                 goto set_speed;
1589         }
1590         /* check auto negotiation is complete */
1591         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
1592                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
1593                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1594                 newdup = 0;
1595                 retval = 0;
1596                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
1597                 goto set_speed;
1598         }
1599
1600         retval = 1;
1601         if (np->gigabit == PHY_GIGABIT) {
1602                 control_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
1603                 status_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_SR, MII_READ);
1604
1605                 if ((control_1000 & ADVERTISE_1000FULL) &&
1606                         (status_1000 & LPA_1000FULL)) {
1607                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
1608                                 dev->name);
1609                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
1610                         newdup = 1;
1611                         goto set_speed;
1612                 }
1613         }
1614
1615         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1616         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
1617         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
1618                                 dev->name, adv, lpa);
1619
1620         /* FIXME: handle parallel detection properly */
1621         lpa = lpa & adv;
1622         if (lpa & LPA_100FULL) {
1623                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1624                 newdup = 1;
1625         } else if (lpa & LPA_100HALF) {
1626                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1627                 newdup = 0;
1628         } else if (lpa & LPA_10FULL) {
1629                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1630                 newdup = 1;
1631         } else if (lpa & LPA_10HALF) {
1632                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1633                 newdup = 0;
1634         } else {
1635                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, lpa);
1636                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1637                 newdup = 0;
1638         }
1639
1640 set_speed:
1641         if (np->duplex == newdup && np->linkspeed == newls)
1642                 return retval;
1643
1644         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
1645                         dev->name, np->linkspeed, np->duplex, newls, newdup);
1646
1647         np->duplex = newdup;
1648         np->linkspeed = newls;
1649
1650         if (np->gigabit == PHY_GIGABIT) {
1651                 phyreg = readl(base + NvRegRandomSeed);
1652                 phyreg &= ~(0x3FF00);
1653                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
1654                         phyreg |= NVREG_RNDSEED_FORCE3;
1655                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
1656                         phyreg |= NVREG_RNDSEED_FORCE2;
1657                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
1658                         phyreg |= NVREG_RNDSEED_FORCE;
1659                 writel(phyreg, base + NvRegRandomSeed);
1660         }
1661
1662         phyreg = readl(base + NvRegPhyInterface);
1663         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
1664         if (np->duplex == 0)
1665                 phyreg |= PHY_HALF;
1666         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
1667                 phyreg |= PHY_100;
1668         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
1669                 phyreg |= PHY_1000;
1670         writel(phyreg, base + NvRegPhyInterface);
1671
1672         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
1673                 base + NvRegMisc1);
1674         pci_push(base);
1675         writel(np->linkspeed, base + NvRegLinkSpeed);
1676         pci_push(base);
1677
1678         return retval;
1679 }
1680
1681 static void nv_linkchange(struct net_device *dev)
1682 {
1683         if (nv_update_linkspeed(dev)) {
1684                 if (netif_carrier_ok(dev)) {
1685                         nv_stop_rx(dev);
1686                 } else {
1687                         netif_carrier_on(dev);
1688                         printk(KERN_INFO "%s: link up.\n", dev->name);
1689                 }
1690                 nv_start_rx(dev);
1691         } else {
1692                 if (netif_carrier_ok(dev)) {
1693                         netif_carrier_off(dev);
1694                         printk(KERN_INFO "%s: link down.\n", dev->name);
1695                         nv_stop_rx(dev);
1696                 }
1697         }
1698 }
1699
1700 static void nv_link_irq(struct net_device *dev)
1701 {
1702         u8 __iomem *base = get_hwbase(dev);
1703         u32 miistat;
1704
1705         miistat = readl(base + NvRegMIIStatus);
1706         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
1707         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
1708
1709         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
1710                 nv_linkchange(dev);
1711         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
1712 }
1713
1714 static irqreturn_t nv_nic_irq(int foo, void *data, struct pt_regs *regs)
1715 {
1716         struct net_device *dev = (struct net_device *) data;
1717         struct fe_priv *np = get_nvpriv(dev);
1718         u8 __iomem *base = get_hwbase(dev);
1719         u32 events;
1720         int i;
1721
1722         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
1723
1724         for (i=0; ; i++) {
1725                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
1726                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
1727                 pci_push(base);
1728                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
1729                 if (!(events & np->irqmask))
1730                         break;
1731
1732                 if (events & (NVREG_IRQ_TX1|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_ERROR|NVREG_IRQ_TX_ERR)) {
1733                         spin_lock(&np->lock);
1734                         nv_tx_done(dev);
1735                         spin_unlock(&np->lock);
1736                 }
1737
1738                 if (events & (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF)) {
1739                         nv_rx_process(dev);
1740                         if (nv_alloc_rx(dev)) {
1741                                 spin_lock(&np->lock);
1742                                 if (!np->in_shutdown)
1743                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1744                                 spin_unlock(&np->lock);
1745                         }
1746                 }
1747
1748                 if (events & NVREG_IRQ_LINK) {
1749                         spin_lock(&np->lock);
1750                         nv_link_irq(dev);
1751                         spin_unlock(&np->lock);
1752                 }
1753                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
1754                         spin_lock(&np->lock);
1755                         nv_linkchange(dev);
1756                         spin_unlock(&np->lock);
1757                         np->link_timeout = jiffies + LINK_TIMEOUT;
1758                 }
1759                 if (events & (NVREG_IRQ_TX_ERR)) {
1760                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
1761                                                 dev->name, events);
1762                 }
1763                 if (events & (NVREG_IRQ_UNKNOWN)) {
1764                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
1765                                                 dev->name, events);
1766                 }
1767                 if (i > max_interrupt_work) {
1768                         spin_lock(&np->lock);
1769                         /* disable interrupts on the nic */
1770                         writel(0, base + NvRegIrqMask);
1771                         pci_push(base);
1772
1773                         if (!np->in_shutdown)
1774                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
1775                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
1776                         spin_unlock(&np->lock);
1777                         break;
1778                 }
1779
1780         }
1781         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
1782
1783         return IRQ_RETVAL(i);
1784 }
1785
1786 static void nv_do_nic_poll(unsigned long data)
1787 {
1788         struct net_device *dev = (struct net_device *) data;
1789         struct fe_priv *np = get_nvpriv(dev);
1790         u8 __iomem *base = get_hwbase(dev);
1791
1792         disable_irq(dev->irq);
1793         /* FIXME: Do we need synchronize_irq(dev->irq) here? */
1794         /*
1795          * reenable interrupts on the nic, we have to do this before calling
1796          * nv_nic_irq because that may decide to do otherwise
1797          */
1798         writel(np->irqmask, base + NvRegIrqMask);
1799         pci_push(base);
1800         nv_nic_irq((int) 0, (void *) data, (struct pt_regs *) NULL);
1801         enable_irq(dev->irq);
1802 }
1803
1804 #ifdef CONFIG_NET_POLL_CONTROLLER
1805 static void nv_poll_controller(struct net_device *dev)
1806 {
1807         nv_do_nic_poll((unsigned long) dev);
1808 }
1809 #endif
1810
1811 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1812 {
1813         struct fe_priv *np = get_nvpriv(dev);
1814         strcpy(info->driver, "forcedeth");
1815         strcpy(info->version, FORCEDETH_VERSION);
1816         strcpy(info->bus_info, pci_name(np->pci_dev));
1817 }
1818
1819 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
1820 {
1821         struct fe_priv *np = get_nvpriv(dev);
1822         wolinfo->supported = WAKE_MAGIC;
1823
1824         spin_lock_irq(&np->lock);
1825         if (np->wolenabled)
1826                 wolinfo->wolopts = WAKE_MAGIC;
1827         spin_unlock_irq(&np->lock);
1828 }
1829
1830 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
1831 {
1832         struct fe_priv *np = get_nvpriv(dev);
1833         u8 __iomem *base = get_hwbase(dev);
1834
1835         spin_lock_irq(&np->lock);
1836         if (wolinfo->wolopts == 0) {
1837                 writel(0, base + NvRegWakeUpFlags);
1838                 np->wolenabled = 0;
1839         }
1840         if (wolinfo->wolopts & WAKE_MAGIC) {
1841                 writel(NVREG_WAKEUPFLAGS_ENABLE, base + NvRegWakeUpFlags);
1842                 np->wolenabled = 1;
1843         }
1844         spin_unlock_irq(&np->lock);
1845         return 0;
1846 }
1847
1848 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1849 {
1850         struct fe_priv *np = netdev_priv(dev);
1851         int adv;
1852
1853         spin_lock_irq(&np->lock);
1854         ecmd->port = PORT_MII;
1855         if (!netif_running(dev)) {
1856                 /* We do not track link speed / duplex setting if the
1857                  * interface is disabled. Force a link check */
1858                 nv_update_linkspeed(dev);
1859         }
1860         switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
1861                 case NVREG_LINKSPEED_10:
1862                         ecmd->speed = SPEED_10;
1863                         break;
1864                 case NVREG_LINKSPEED_100:
1865                         ecmd->speed = SPEED_100;
1866                         break;
1867                 case NVREG_LINKSPEED_1000:
1868                         ecmd->speed = SPEED_1000;
1869                         break;
1870         }
1871         ecmd->duplex = DUPLEX_HALF;
1872         if (np->duplex)
1873                 ecmd->duplex = DUPLEX_FULL;
1874
1875         ecmd->autoneg = np->autoneg;
1876
1877         ecmd->advertising = ADVERTISED_MII;
1878         if (np->autoneg) {
1879                 ecmd->advertising |= ADVERTISED_Autoneg;
1880                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1881         } else {
1882                 adv = np->fixed_mode;
1883         }
1884         if (adv & ADVERTISE_10HALF)
1885                 ecmd->advertising |= ADVERTISED_10baseT_Half;
1886         if (adv & ADVERTISE_10FULL)
1887                 ecmd->advertising |= ADVERTISED_10baseT_Full;
1888         if (adv & ADVERTISE_100HALF)
1889                 ecmd->advertising |= ADVERTISED_100baseT_Half;
1890         if (adv & ADVERTISE_100FULL)
1891                 ecmd->advertising |= ADVERTISED_100baseT_Full;
1892         if (np->autoneg && np->gigabit == PHY_GIGABIT) {
1893                 adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
1894                 if (adv & ADVERTISE_1000FULL)
1895                         ecmd->advertising |= ADVERTISED_1000baseT_Full;
1896         }
1897
1898         ecmd->supported = (SUPPORTED_Autoneg |
1899                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
1900                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
1901                 SUPPORTED_MII);
1902         if (np->gigabit == PHY_GIGABIT)
1903                 ecmd->supported |= SUPPORTED_1000baseT_Full;
1904
1905         ecmd->phy_address = np->phyaddr;
1906         ecmd->transceiver = XCVR_EXTERNAL;
1907
1908         /* ignore maxtxpkt, maxrxpkt for now */
1909         spin_unlock_irq(&np->lock);
1910         return 0;
1911 }
1912
1913 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1914 {
1915         struct fe_priv *np = netdev_priv(dev);
1916
1917         if (ecmd->port != PORT_MII)
1918                 return -EINVAL;
1919         if (ecmd->transceiver != XCVR_EXTERNAL)
1920                 return -EINVAL;
1921         if (ecmd->phy_address != np->phyaddr) {
1922                 /* TODO: support switching between multiple phys. Should be
1923                  * trivial, but not enabled due to lack of test hardware. */
1924                 return -EINVAL;
1925         }
1926         if (ecmd->autoneg == AUTONEG_ENABLE) {
1927                 u32 mask;
1928
1929                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
1930                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
1931                 if (np->gigabit == PHY_GIGABIT)
1932                         mask |= ADVERTISED_1000baseT_Full;
1933
1934                 if ((ecmd->advertising & mask) == 0)
1935                         return -EINVAL;
1936
1937         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
1938                 /* Note: autonegotiation disable, speed 1000 intentionally
1939                  * forbidden - noone should need that. */
1940
1941                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
1942                         return -EINVAL;
1943                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
1944                         return -EINVAL;
1945         } else {
1946                 return -EINVAL;
1947         }
1948
1949         spin_lock_irq(&np->lock);
1950         if (ecmd->autoneg == AUTONEG_ENABLE) {
1951                 int adv, bmcr;
1952
1953                 np->autoneg = 1;
1954
1955                 /* advertise only what has been requested */
1956                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1957                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
1958                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
1959                         adv |= ADVERTISE_10HALF;
1960                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
1961                         adv |= ADVERTISE_10FULL;
1962                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
1963                         adv |= ADVERTISE_100HALF;
1964                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
1965                         adv |= ADVERTISE_100FULL;
1966                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
1967
1968                 if (np->gigabit == PHY_GIGABIT) {
1969                         adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
1970                         adv &= ~ADVERTISE_1000FULL;
1971                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
1972                                 adv |= ADVERTISE_1000FULL;
1973                         mii_rw(dev, np->phyaddr, MII_1000BT_CR, adv);
1974                 }
1975
1976                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1977                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1978                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
1979
1980         } else {
1981                 int adv, bmcr;
1982
1983                 np->autoneg = 0;
1984
1985                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1986                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
1987                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
1988                         adv |= ADVERTISE_10HALF;
1989                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
1990                         adv |= ADVERTISE_10FULL;
1991                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
1992                         adv |= ADVERTISE_100HALF;
1993                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
1994                         adv |= ADVERTISE_100FULL;
1995                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
1996                 np->fixed_mode = adv;
1997
1998                 if (np->gigabit == PHY_GIGABIT) {
1999                         adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
2000                         adv &= ~ADVERTISE_1000FULL;
2001                         mii_rw(dev, np->phyaddr, MII_1000BT_CR, adv);
2002                 }
2003
2004                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
2005                 bmcr |= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_FULLDPLX);
2006                 if (adv & (ADVERTISE_10FULL|ADVERTISE_100FULL))
2007                         bmcr |= BMCR_FULLDPLX;
2008                 if (adv & (ADVERTISE_100HALF|ADVERTISE_100FULL))
2009                         bmcr |= BMCR_SPEED100;
2010                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
2011
2012                 if (netif_running(dev)) {
2013                         /* Wait a bit and then reconfigure the nic. */
2014                         udelay(10);
2015                         nv_linkchange(dev);
2016                 }
2017         }
2018         spin_unlock_irq(&np->lock);
2019
2020         return 0;
2021 }
2022
2023 #define FORCEDETH_REGS_VER      1
2024 #define FORCEDETH_REGS_SIZE     0x400 /* 256 32-bit registers */
2025
2026 static int nv_get_regs_len(struct net_device *dev)
2027 {
2028         return FORCEDETH_REGS_SIZE;
2029 }
2030
2031 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
2032 {
2033         struct fe_priv *np = get_nvpriv(dev);
2034         u8 __iomem *base = get_hwbase(dev);
2035         u32 *rbuf = buf;
2036         int i;
2037
2038         regs->version = FORCEDETH_REGS_VER;
2039         spin_lock_irq(&np->lock);
2040         for (i=0;i<FORCEDETH_REGS_SIZE/sizeof(u32);i++)
2041                 rbuf[i] = readl(base + i*sizeof(u32));
2042         spin_unlock_irq(&np->lock);
2043 }
2044
2045 static int nv_nway_reset(struct net_device *dev)
2046 {
2047         struct fe_priv *np = get_nvpriv(dev);
2048         int ret;
2049
2050         spin_lock_irq(&np->lock);
2051         if (np->autoneg) {
2052                 int bmcr;
2053
2054                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
2055                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
2056                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
2057
2058                 ret = 0;
2059         } else {
2060                 ret = -EINVAL;
2061         }
2062         spin_unlock_irq(&np->lock);
2063
2064         return ret;
2065 }
2066
2067 static struct ethtool_ops ops = {
2068         .get_drvinfo = nv_get_drvinfo,
2069         .get_link = ethtool_op_get_link,
2070         .get_wol = nv_get_wol,
2071         .set_wol = nv_set_wol,
2072         .get_settings = nv_get_settings,
2073         .set_settings = nv_set_settings,
2074         .get_regs_len = nv_get_regs_len,
2075         .get_regs = nv_get_regs,
2076         .nway_reset = nv_nway_reset,
2077         .get_perm_addr = ethtool_op_get_perm_addr,
2078 };
2079
2080 static int nv_open(struct net_device *dev)
2081 {
2082         struct fe_priv *np = get_nvpriv(dev);
2083         u8 __iomem *base = get_hwbase(dev);
2084         int ret, oom, i;
2085
2086         dprintk(KERN_DEBUG "nv_open: begin\n");
2087
2088         /* 1) erase previous misconfiguration */
2089         /* 4.1-1: stop adapter: ignored, 4.3 seems to be overkill */
2090         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
2091         writel(0, base + NvRegMulticastAddrB);
2092         writel(0, base + NvRegMulticastMaskA);
2093         writel(0, base + NvRegMulticastMaskB);
2094         writel(0, base + NvRegPacketFilterFlags);
2095
2096         writel(0, base + NvRegTransmitterControl);
2097         writel(0, base + NvRegReceiverControl);
2098
2099         writel(0, base + NvRegAdapterControl);
2100
2101         /* 2) initialize descriptor rings */
2102         set_bufsize(dev);
2103         oom = nv_init_ring(dev);
2104
2105         writel(0, base + NvRegLinkSpeed);
2106         writel(0, base + NvRegUnknownTransmitterReg);
2107         nv_txrx_reset(dev);
2108         writel(0, base + NvRegUnknownSetupReg6);
2109
2110         np->in_shutdown = 0;
2111
2112         /* 3) set mac address */
2113         nv_copy_mac_to_hw(dev);
2114
2115         /* 4) give hw rings */
2116         writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
2117         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
2118                 writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
2119         else
2120                 writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
2121         writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
2122                 base + NvRegRingSizes);
2123
2124         /* 5) continue setup */
2125         writel(np->linkspeed, base + NvRegLinkSpeed);
2126         writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);
2127         writel(np->txrxctl_bits, base + NvRegTxRxControl);
2128         pci_push(base);
2129         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
2130         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
2131                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
2132                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
2133
2134         writel(0, base + NvRegUnknownSetupReg4);
2135         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2136         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
2137
2138         /* 6) continue setup */
2139         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
2140         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
2141         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
2142         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2143
2144         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
2145         get_random_bytes(&i, sizeof(i));
2146         writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
2147         writel(NVREG_UNKSETUP1_VAL, base + NvRegUnknownSetupReg1);
2148         writel(NVREG_UNKSETUP2_VAL, base + NvRegUnknownSetupReg2);
2149         writel(NVREG_POLL_DEFAULT, base + NvRegPollingInterval);
2150         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
2151         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
2152                         base + NvRegAdapterControl);
2153         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
2154         writel(NVREG_UNKSETUP4_VAL, base + NvRegUnknownSetupReg4);
2155         writel(NVREG_WAKEUPFLAGS_VAL, base + NvRegWakeUpFlags);
2156
2157         i = readl(base + NvRegPowerState);
2158         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
2159                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
2160
2161         pci_push(base);
2162         udelay(10);
2163         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
2164
2165         writel(0, base + NvRegIrqMask);
2166         pci_push(base);
2167         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
2168         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2169         pci_push(base);
2170
2171         ret = request_irq(dev->irq, &nv_nic_irq, SA_SHIRQ, dev->name, dev);
2172         if (ret)
2173                 goto out_drain;
2174
2175         /* ask for interrupts */
2176         writel(np->irqmask, base + NvRegIrqMask);
2177
2178         spin_lock_irq(&np->lock);
2179         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
2180         writel(0, base + NvRegMulticastAddrB);
2181         writel(0, base + NvRegMulticastMaskA);
2182         writel(0, base + NvRegMulticastMaskB);
2183         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
2184         /* One manual link speed update: Interrupts are enabled, future link
2185          * speed changes cause interrupts and are handled by nv_link_irq().
2186          */
2187         {
2188                 u32 miistat;
2189                 miistat = readl(base + NvRegMIIStatus);
2190                 writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
2191                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
2192         }
2193         /* set linkspeed to invalid value, thus force nv_update_linkspeed
2194          * to init hw */
2195         np->linkspeed = 0;
2196         ret = nv_update_linkspeed(dev);
2197         nv_start_rx(dev);
2198         nv_start_tx(dev);
2199         netif_start_queue(dev);
2200         if (ret) {
2201                 netif_carrier_on(dev);
2202         } else {
2203                 printk("%s: no link during initialization.\n", dev->name);
2204                 netif_carrier_off(dev);
2205         }
2206         if (oom)
2207                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2208         spin_unlock_irq(&np->lock);
2209
2210         return 0;
2211 out_drain:
2212         drain_ring(dev);
2213         return ret;
2214 }
2215
2216 static int nv_close(struct net_device *dev)
2217 {
2218         struct fe_priv *np = get_nvpriv(dev);
2219         u8 __iomem *base;
2220
2221         spin_lock_irq(&np->lock);
2222         np->in_shutdown = 1;
2223         spin_unlock_irq(&np->lock);
2224         synchronize_irq(dev->irq);
2225
2226         del_timer_sync(&np->oom_kick);
2227         del_timer_sync(&np->nic_poll);
2228
2229         netif_stop_queue(dev);
2230         spin_lock_irq(&np->lock);
2231         nv_stop_tx(dev);
2232         nv_stop_rx(dev);
2233         nv_txrx_reset(dev);
2234
2235         /* disable interrupts on the nic or we will lock up */
2236         base = get_hwbase(dev);
2237         writel(0, base + NvRegIrqMask);
2238         pci_push(base);
2239         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
2240
2241         spin_unlock_irq(&np->lock);
2242
2243         free_irq(dev->irq, dev);
2244
2245         drain_ring(dev);
2246
2247         if (np->wolenabled)
2248                 nv_start_rx(dev);
2249
2250         /* special op: write back the misordered MAC address - otherwise
2251          * the next nv_probe would see a wrong address.
2252          */
2253         writel(np->orig_mac[0], base + NvRegMacAddrA);
2254         writel(np->orig_mac[1], base + NvRegMacAddrB);
2255
2256         /* FIXME: power down nic */
2257
2258         return 0;
2259 }
2260
2261 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
2262 {
2263         struct net_device *dev;
2264         struct fe_priv *np;
2265         unsigned long addr;
2266         u8 __iomem *base;
2267         int err, i;
2268
2269         dev = alloc_etherdev(sizeof(struct fe_priv));
2270         err = -ENOMEM;
2271         if (!dev)
2272                 goto out;
2273
2274         np = get_nvpriv(dev);
2275         np->pci_dev = pci_dev;
2276         spin_lock_init(&np->lock);
2277         SET_MODULE_OWNER(dev);
2278         SET_NETDEV_DEV(dev, &pci_dev->dev);
2279
2280         init_timer(&np->oom_kick);
2281         np->oom_kick.data = (unsigned long) dev;
2282         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
2283         init_timer(&np->nic_poll);
2284         np->nic_poll.data = (unsigned long) dev;
2285         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
2286
2287         err = pci_enable_device(pci_dev);
2288         if (err) {
2289                 printk(KERN_INFO "forcedeth: pci_enable_dev failed (%d) for device %s\n",
2290                                 err, pci_name(pci_dev));
2291                 goto out_free;
2292         }
2293
2294         pci_set_master(pci_dev);
2295
2296         err = pci_request_regions(pci_dev, DRV_NAME);
2297         if (err < 0)
2298                 goto out_disable;
2299
2300         err = -EINVAL;
2301         addr = 0;
2302         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
2303                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
2304                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
2305                                 pci_resource_len(pci_dev, i),
2306                                 pci_resource_flags(pci_dev, i));
2307                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
2308                                 pci_resource_len(pci_dev, i) >= NV_PCI_REGSZ) {
2309                         addr = pci_resource_start(pci_dev, i);
2310                         break;
2311                 }
2312         }
2313         if (i == DEVICE_COUNT_RESOURCE) {
2314                 printk(KERN_INFO "forcedeth: Couldn't find register window for device %s.\n",
2315                                         pci_name(pci_dev));
2316                 goto out_relreg;
2317         }
2318
2319         /* handle different descriptor versions */
2320         if (id->driver_data & DEV_HAS_HIGH_DMA) {
2321                 /* packet format 3: supports 40-bit addressing */
2322                 np->desc_ver = DESC_VER_3;
2323                 if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
2324                         printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
2325                                         pci_name(pci_dev));
2326                 }
2327                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
2328         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
2329                 /* packet format 2: supports jumbo frames */
2330                 np->desc_ver = DESC_VER_2;
2331                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
2332         } else {
2333                 /* original packet format */
2334                 np->desc_ver = DESC_VER_1;
2335                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
2336         }
2337
2338         np->pkt_limit = NV_PKTLIMIT_1;
2339         if (id->driver_data & DEV_HAS_LARGEDESC)
2340                 np->pkt_limit = NV_PKTLIMIT_2;
2341
2342         if (id->driver_data & DEV_HAS_CHECKSUM) {
2343                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
2344                 dev->features |= NETIF_F_HW_CSUM;
2345         }
2346
2347         err = -ENOMEM;
2348         np->base = ioremap(addr, NV_PCI_REGSZ);
2349         if (!np->base)
2350                 goto out_relreg;
2351         dev->base_addr = (unsigned long)np->base;
2352
2353         dev->irq = pci_dev->irq;
2354
2355         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
2356                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
2357                                         sizeof(struct ring_desc) * (RX_RING + TX_RING),
2358                                         &np->ring_addr);
2359                 if (!np->rx_ring.orig)
2360                         goto out_unmap;
2361                 np->tx_ring.orig = &np->rx_ring.orig[RX_RING];
2362         } else {
2363                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
2364                                         sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
2365                                         &np->ring_addr);
2366                 if (!np->rx_ring.ex)
2367                         goto out_unmap;
2368                 np->tx_ring.ex = &np->rx_ring.ex[RX_RING];
2369         }
2370
2371         dev->open = nv_open;
2372         dev->stop = nv_close;
2373         dev->hard_start_xmit = nv_start_xmit;
2374         dev->get_stats = nv_get_stats;
2375         dev->change_mtu = nv_change_mtu;
2376         dev->set_mac_address = nv_set_mac_address;
2377         dev->set_multicast_list = nv_set_multicast;
2378 #ifdef CONFIG_NET_POLL_CONTROLLER
2379         dev->poll_controller = nv_poll_controller;
2380 #endif
2381         SET_ETHTOOL_OPS(dev, &ops);
2382         dev->tx_timeout = nv_tx_timeout;
2383         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
2384
2385         pci_set_drvdata(pci_dev, dev);
2386
2387         /* read the mac address */
2388         base = get_hwbase(dev);
2389         np->orig_mac[0] = readl(base + NvRegMacAddrA);
2390         np->orig_mac[1] = readl(base + NvRegMacAddrB);
2391
2392         dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
2393         dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
2394         dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
2395         dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
2396         dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
2397         dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
2398         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2399
2400         if (!is_valid_ether_addr(dev->perm_addr)) {
2401                 /*
2402                  * Bad mac address. At least one bios sets the mac address
2403                  * to 01:23:45:67:89:ab
2404                  */
2405                 printk(KERN_ERR "%s: Invalid Mac address detected: %02x:%02x:%02x:%02x:%02x:%02x\n",
2406                         pci_name(pci_dev),
2407                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
2408                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
2409                 printk(KERN_ERR "Please complain to your hardware vendor. Switching to a random MAC.\n");
2410                 dev->dev_addr[0] = 0x00;
2411                 dev->dev_addr[1] = 0x00;
2412                 dev->dev_addr[2] = 0x6c;
2413                 get_random_bytes(&dev->dev_addr[3], 3);
2414         }
2415
2416         dprintk(KERN_DEBUG "%s: MAC Address %02x:%02x:%02x:%02x:%02x:%02x\n", pci_name(pci_dev),
2417                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
2418                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
2419
2420         /* disable WOL */
2421         writel(0, base + NvRegWakeUpFlags);
2422         np->wolenabled = 0;
2423
2424         if (np->desc_ver == DESC_VER_1) {
2425                 np->tx_flags = NV_TX_LASTPACKET|NV_TX_VALID;
2426         } else {
2427                 np->tx_flags = NV_TX2_LASTPACKET|NV_TX2_VALID;
2428         }
2429         np->irqmask = NVREG_IRQMASK_WANTED;
2430         if (id->driver_data & DEV_NEED_TIMERIRQ)
2431                 np->irqmask |= NVREG_IRQ_TIMER;
2432         if (id->driver_data & DEV_NEED_LINKTIMER) {
2433                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
2434                 np->need_linktimer = 1;
2435                 np->link_timeout = jiffies + LINK_TIMEOUT;
2436         } else {
2437                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
2438                 np->need_linktimer = 0;
2439         }
2440
2441         /* find a suitable phy */
2442         for (i = 1; i < 32; i++) {
2443                 int id1, id2;
2444
2445                 spin_lock_irq(&np->lock);
2446                 id1 = mii_rw(dev, i, MII_PHYSID1, MII_READ);
2447                 spin_unlock_irq(&np->lock);
2448                 if (id1 < 0 || id1 == 0xffff)
2449                         continue;
2450                 spin_lock_irq(&np->lock);
2451                 id2 = mii_rw(dev, i, MII_PHYSID2, MII_READ);
2452                 spin_unlock_irq(&np->lock);
2453                 if (id2 < 0 || id2 == 0xffff)
2454                         continue;
2455
2456                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
2457                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
2458                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
2459                                 pci_name(pci_dev), id1, id2, i);
2460                 np->phyaddr = i;
2461                 np->phy_oui = id1 | id2;
2462                 break;
2463         }
2464         if (i == 32) {
2465                 /* PHY in isolate mode? No phy attached and user wants to
2466                  * test loopback? Very odd, but can be correct.
2467                  */
2468                 printk(KERN_INFO "%s: open: Could not find a valid PHY.\n",
2469                                 pci_name(pci_dev));
2470         }
2471
2472         if (i != 32) {
2473                 /* reset it */
2474                 phy_init(dev);
2475         }
2476
2477         /* set default link speed settings */
2478         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2479         np->duplex = 0;
2480         np->autoneg = 1;
2481
2482         err = register_netdev(dev);
2483         if (err) {
2484                 printk(KERN_INFO "forcedeth: unable to register netdev: %d\n", err);
2485                 goto out_freering;
2486         }
2487         printk(KERN_INFO "%s: forcedeth.c: subsystem: %05x:%04x bound to %s\n",
2488                         dev->name, pci_dev->subsystem_vendor, pci_dev->subsystem_device,
2489                         pci_name(pci_dev));
2490
2491         return 0;
2492
2493 out_freering:
2494         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
2495                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
2496                                     np->rx_ring.orig, np->ring_addr);
2497         else
2498                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
2499                                     np->rx_ring.ex, np->ring_addr);
2500         pci_set_drvdata(pci_dev, NULL);
2501 out_unmap:
2502         iounmap(get_hwbase(dev));
2503 out_relreg:
2504         pci_release_regions(pci_dev);
2505 out_disable:
2506         pci_disable_device(pci_dev);
2507 out_free:
2508         free_netdev(dev);
2509 out:
2510         return err;
2511 }
2512
2513 static void __devexit nv_remove(struct pci_dev *pci_dev)
2514 {
2515         struct net_device *dev = pci_get_drvdata(pci_dev);
2516         struct fe_priv *np = get_nvpriv(dev);
2517
2518         unregister_netdev(dev);
2519
2520         /* free all structures */
2521         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
2522                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring.orig, np->ring_addr);
2523         else
2524                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING), np->rx_ring.ex, np->ring_addr);
2525         iounmap(get_hwbase(dev));
2526         pci_release_regions(pci_dev);
2527         pci_disable_device(pci_dev);
2528         free_netdev(dev);
2529         pci_set_drvdata(pci_dev, NULL);
2530 }
2531
2532 static struct pci_device_id pci_tbl[] = {
2533         {       /* nForce Ethernet Controller */
2534                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
2535                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
2536         },
2537         {       /* nForce2 Ethernet Controller */
2538                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
2539                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
2540         },
2541         {       /* nForce3 Ethernet Controller */
2542                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
2543                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
2544         },
2545         {       /* nForce3 Ethernet Controller */
2546                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
2547                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
2548         },
2549         {       /* nForce3 Ethernet Controller */
2550                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
2551                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
2552         },
2553         {       /* nForce3 Ethernet Controller */
2554                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
2555                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
2556         },
2557         {       /* nForce3 Ethernet Controller */
2558                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
2559                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
2560         },
2561         {       /* CK804 Ethernet Controller */
2562                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
2563                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2564         },
2565         {       /* CK804 Ethernet Controller */
2566                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
2567                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2568         },
2569         {       /* MCP04 Ethernet Controller */
2570                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
2571                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2572         },
2573         {       /* MCP04 Ethernet Controller */
2574                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
2575                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2576         },
2577         {       /* MCP51 Ethernet Controller */
2578                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
2579                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
2580         },
2581         {       /* MCP51 Ethernet Controller */
2582                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
2583                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
2584         },
2585         {       /* MCP55 Ethernet Controller */
2586                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
2587                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2588         },
2589         {       /* MCP55 Ethernet Controller */
2590                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
2591                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
2592         },
2593         {0,},
2594 };
2595
2596 static struct pci_driver driver = {
2597         .name = "forcedeth",
2598         .id_table = pci_tbl,
2599         .probe = nv_probe,
2600         .remove = __devexit_p(nv_remove),
2601 };
2602
2603
2604 static int __init init_nic(void)
2605 {
2606         printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION);
2607         return pci_module_init(&driver);
2608 }
2609
2610 static void __exit exit_nic(void)
2611 {
2612         pci_unregister_driver(&driver);
2613 }
2614
2615 module_param(max_interrupt_work, int, 0);
2616 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
2617
2618 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
2619 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
2620 MODULE_LICENSE("GPL");
2621
2622 MODULE_DEVICE_TABLE(pci, pci_tbl);
2623
2624 module_init(init_nic);
2625 module_exit(exit_nic);