drivers/net/forcedeth.c

   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) 2003,4,5 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  *      0.44: 20 Aug 2005: Add support for scatter gather and segmentation.
 100  *      0.45: 18 Sep 2005: Remove nv_stop/start_rx from every link check
 101  *      0.46: 20 Oct 2005: Add irq optimization modes.
 102  *      0.47: 26 Oct 2005: Add phyaddr 0 in phy scan.
 103  *      0.48: 24 Dec 2005: Disable TSO, bugfix for pci_map_single
 104  *      0.49: 10 Dec 2005: Fix tso for large buffers.
 105  *      0.50: 20 Jan 2006: Add 8021pq tagging support.
 106  *      0.51: 20 Jan 2006: Add 64bit consistent memory allocation for rings.
 107  *      0.52: 20 Jan 2006: Add MSI/MSIX support.
 108  *      0.53: 19 Mar 2006: Fix init from low power mode and add hw reset.
 109  *
 110  * Known bugs:
 111  * We suspect that on some hardware no TX done interrupts are generated.
 112  * This means recovery from netif_stop_queue only happens if the hw timer
 113  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
 114  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
 115  * If your hardware reliably generates tx done interrupts, then you can remove
 116  * DEV_NEED_TIMERIRQ from the driver_data flags.
 117  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
 118  * superfluous timer interrupts from the nic.
 119  */
 120 #define FORCEDETH_VERSION               "0.53"
 121 #define DRV_NAME                        "forcedeth"
 122
 123 #include <linux/module.h>
 124 #include <linux/types.h>
 125 #include <linux/pci.h>
 126 #include <linux/interrupt.h>
 127 #include <linux/netdevice.h>
 128 #include <linux/etherdevice.h>
 129 #include <linux/delay.h>
 130 #include <linux/spinlock.h>
 131 #include <linux/ethtool.h>
 132 #include <linux/timer.h>
 133 #include <linux/skbuff.h>
 134 #include <linux/mii.h>
 135 #include <linux/random.h>
 136 #include <linux/init.h>
 137 #include <linux/if_vlan.h>
 138 #include <linux/dma-mapping.h>
 139
 140 #include <asm/irq.h>
 141 #include <asm/io.h>
 142 #include <asm/uaccess.h>
 143 #include <asm/system.h>
 144
 145 #if 0
 146 #define dprintk                 printk
 147 #else
 148 #define dprintk(x...)           do { } while (0)
 149 #endif
 150
 151
 152 /*
 153  * Hardware access:
 154  */
 155
 156 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 157 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 158 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
 159 #define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 160 #define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 161 #define DEV_HAS_VLAN            0x0020  /* device supports vlan tagging and striping */
 162 #define DEV_HAS_MSI             0x0040  /* device supports MSI */
 163 #define DEV_HAS_MSI_X           0x0080  /* device supports MSI-X */
 164 #define DEV_HAS_POWER_CNTRL     0x0100  /* device supports power savings */
 165
 166 enum {
 167         NvRegIrqStatus = 0x000,
 168 #define NVREG_IRQSTAT_MIIEVENT  0x040
 169 #define NVREG_IRQSTAT_MASK              0x1ff
 170         NvRegIrqMask = 0x004,
 171 #define NVREG_IRQ_RX_ERROR              0x0001
 172 #define NVREG_IRQ_RX                    0x0002
 173 #define NVREG_IRQ_RX_NOBUF              0x0004
 174 #define NVREG_IRQ_TX_ERR                0x0008
 175 #define NVREG_IRQ_TX_OK                 0x0010
 176 #define NVREG_IRQ_TIMER                 0x0020
 177 #define NVREG_IRQ_LINK                  0x0040
 178 #define NVREG_IRQ_RX_FORCED             0x0080
 179 #define NVREG_IRQ_TX_FORCED             0x0100
 180 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 181 #define NVREG_IRQMASK_CPU               0x0040
 182 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 183 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 184 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK)
 185
 186 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 187                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
 188                                         NVREG_IRQ_TX_FORCED))
 189
 190         NvRegUnknownSetupReg6 = 0x008,
 191 #define NVREG_UNKSETUP6_VAL             3
 192
 193 /*
 194  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 195  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 196  */
 197         NvRegPollingInterval = 0x00c,
 198 #define NVREG_POLL_DEFAULT_THROUGHPUT   970
 199 #define NVREG_POLL_DEFAULT_CPU  13
 200         NvRegMSIMap0 = 0x020,
 201         NvRegMSIMap1 = 0x024,
 202         NvRegMSIIrqMask = 0x030,
 203 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 204         NvRegMisc1 = 0x080,
 205 #define NVREG_MISC1_HD          0x02
 206 #define NVREG_MISC1_FORCE       0x3b0f3c
 207
 208         NvRegMacReset = 0x3c,
 209 #define NVREG_MAC_RESET_ASSERT  0x0F3
 210         NvRegTransmitterControl = 0x084,
 211 #define NVREG_XMITCTL_START     0x01
 212         NvRegTransmitterStatus = 0x088,
 213 #define NVREG_XMITSTAT_BUSY     0x01
 214
 215         NvRegPacketFilterFlags = 0x8c,
 216 #define NVREG_PFF_ALWAYS        0x7F0008
 217 #define NVREG_PFF_PROMISC       0x80
 218 #define NVREG_PFF_MYADDR        0x20
 219
 220         NvRegOffloadConfig = 0x90,
 221 #define NVREG_OFFLOAD_HOMEPHY   0x601
 222 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 223         NvRegReceiverControl = 0x094,
 224 #define NVREG_RCVCTL_START      0x01
 225         NvRegReceiverStatus = 0x98,
 226 #define NVREG_RCVSTAT_BUSY      0x01
 227
 228         NvRegRandomSeed = 0x9c,
 229 #define NVREG_RNDSEED_MASK      0x00ff
 230 #define NVREG_RNDSEED_FORCE     0x7f00
 231 #define NVREG_RNDSEED_FORCE2    0x2d00
 232 #define NVREG_RNDSEED_FORCE3    0x7400
 233
 234         NvRegUnknownSetupReg1 = 0xA0,
 235 #define NVREG_UNKSETUP1_VAL     0x16070f
 236         NvRegUnknownSetupReg2 = 0xA4,
 237 #define NVREG_UNKSETUP2_VAL     0x16
 238         NvRegMacAddrA = 0xA8,
 239         NvRegMacAddrB = 0xAC,
 240         NvRegMulticastAddrA = 0xB0,
 241 #define NVREG_MCASTADDRA_FORCE  0x01
 242         NvRegMulticastAddrB = 0xB4,
 243         NvRegMulticastMaskA = 0xB8,
 244         NvRegMulticastMaskB = 0xBC,
 245
 246         NvRegPhyInterface = 0xC0,
 247 #define PHY_RGMII               0x10000000
 248
 249         NvRegTxRingPhysAddr = 0x100,
 250         NvRegRxRingPhysAddr = 0x104,
 251         NvRegRingSizes = 0x108,
 252 #define NVREG_RINGSZ_TXSHIFT 0
 253 #define NVREG_RINGSZ_RXSHIFT 16
 254         NvRegUnknownTransmitterReg = 0x10c,
 255         NvRegLinkSpeed = 0x110,
 256 #define NVREG_LINKSPEED_FORCE 0x10000
 257 #define NVREG_LINKSPEED_10      1000
 258 #define NVREG_LINKSPEED_100     100
 259 #define NVREG_LINKSPEED_1000    50
 260 #define NVREG_LINKSPEED_MASK    (0xFFF)
 261         NvRegUnknownSetupReg5 = 0x130,
 262 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 263         NvRegUnknownSetupReg3 = 0x13c,
 264 #define NVREG_UNKSETUP3_VAL1    0x200010
 265         NvRegTxRxControl = 0x144,
 266 #define NVREG_TXRXCTL_KICK      0x0001
 267 #define NVREG_TXRXCTL_BIT1      0x0002
 268 #define NVREG_TXRXCTL_BIT2      0x0004
 269 #define NVREG_TXRXCTL_IDLE      0x0008
 270 #define NVREG_TXRXCTL_RESET     0x0010
 271 #define NVREG_TXRXCTL_RXCHECK   0x0400
 272 #define NVREG_TXRXCTL_DESC_1    0
 273 #define NVREG_TXRXCTL_DESC_2    0x02100
 274 #define NVREG_TXRXCTL_DESC_3    0x02200
 275 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 276 #define NVREG_TXRXCTL_VLANINS   0x00080
 277         NvRegTxRingPhysAddrHigh = 0x148,
 278         NvRegRxRingPhysAddrHigh = 0x14C,
 279         NvRegMIIStatus = 0x180,
 280 #define NVREG_MIISTAT_ERROR             0x0001
 281 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 282 #define NVREG_MIISTAT_MASK              0x000f
 283 #define NVREG_MIISTAT_MASK2             0x000f
 284         NvRegUnknownSetupReg4 = 0x184,
 285 #define NVREG_UNKSETUP4_VAL     8
 286
 287         NvRegAdapterControl = 0x188,
 288 #define NVREG_ADAPTCTL_START    0x02
 289 #define NVREG_ADAPTCTL_LINKUP   0x04
 290 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 291 #define NVREG_ADAPTCTL_RUNNING  0x100000
 292 #define NVREG_ADAPTCTL_PHYSHIFT 24
 293         NvRegMIISpeed = 0x18c,
 294 #define NVREG_MIISPEED_BIT8     (1<<8)
 295 #define NVREG_MIIDELAY  5
 296         NvRegMIIControl = 0x190,
 297 #define NVREG_MIICTL_INUSE      0x08000
 298 #define NVREG_MIICTL_WRITE      0x00400
 299 #define NVREG_MIICTL_ADDRSHIFT  5
 300         NvRegMIIData = 0x194,
 301         NvRegWakeUpFlags = 0x200,
 302 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 303 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 304 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 305 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 306 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 307 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 308 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 309 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 310 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 311 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 312 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 313
 314         NvRegPatternCRC = 0x204,
 315         NvRegPatternMask = 0x208,
 316         NvRegPowerCap = 0x268,
 317 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 318 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 319 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 320         NvRegPowerState = 0x26c,
 321 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 322 #define NVREG_POWERSTATE_VALID          0x0100
 323 #define NVREG_POWERSTATE_MASK           0x0003
 324 #define NVREG_POWERSTATE_D0             0x0000
 325 #define NVREG_POWERSTATE_D1             0x0001
 326 #define NVREG_POWERSTATE_D2             0x0002
 327 #define NVREG_POWERSTATE_D3             0x0003
 328         NvRegVlanControl = 0x300,
 329 #define NVREG_VLANCONTROL_ENABLE        0x2000
 330         NvRegMSIXMap0 = 0x3e0,
 331         NvRegMSIXMap1 = 0x3e4,
 332         NvRegMSIXIrqStatus = 0x3f0,
 333
 334         NvRegPowerState2 = 0x600,
 335 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
 336 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 337 };
 338
 339 /* Big endian: should work, but is untested */
 340 struct ring_desc {
 341         u32 PacketBuffer;
 342         u32 FlagLen;
 343 };
 344
 345 struct ring_desc_ex {
 346         u32 PacketBufferHigh;
 347         u32 PacketBufferLow;
 348         u32 TxVlan;
 349         u32 FlagLen;
 350 };
 351
 352 typedef union _ring_type {
 353         struct ring_desc* orig;
 354         struct ring_desc_ex* ex;
 355 } ring_type;
 356
 357 #define FLAG_MASK_V1 0xffff0000
 358 #define FLAG_MASK_V2 0xffffc000
 359 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 360 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 361
 362 #define NV_TX_LASTPACKET        (1<<16)
 363 #define NV_TX_RETRYERROR        (1<<19)
 364 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 365 #define NV_TX_DEFERRED          (1<<26)
 366 #define NV_TX_CARRIERLOST       (1<<27)
 367 #define NV_TX_LATECOLLISION     (1<<28)
 368 #define NV_TX_UNDERFLOW         (1<<29)
 369 #define NV_TX_ERROR             (1<<30)
 370 #define NV_TX_VALID             (1<<31)
 371
 372 #define NV_TX2_LASTPACKET       (1<<29)
 373 #define NV_TX2_RETRYERROR       (1<<18)
 374 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 375 #define NV_TX2_DEFERRED         (1<<25)
 376 #define NV_TX2_CARRIERLOST      (1<<26)
 377 #define NV_TX2_LATECOLLISION    (1<<27)
 378 #define NV_TX2_UNDERFLOW        (1<<28)
 379 /* error and valid are the same for both */
 380 #define NV_TX2_ERROR            (1<<30)
 381 #define NV_TX2_VALID            (1<<31)
 382 #define NV_TX2_TSO              (1<<28)
 383 #define NV_TX2_TSO_SHIFT        14
 384 #define NV_TX2_TSO_MAX_SHIFT    14
 385 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 386 #define NV_TX2_CHECKSUM_L3      (1<<27)
 387 #define NV_TX2_CHECKSUM_L4      (1<<26)
 388
 389 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 390
 391 #define NV_RX_DESCRIPTORVALID   (1<<16)
 392 #define NV_RX_MISSEDFRAME       (1<<17)
 393 #define NV_RX_SUBSTRACT1        (1<<18)
 394 #define NV_RX_ERROR1            (1<<23)
 395 #define NV_RX_ERROR2            (1<<24)
 396 #define NV_RX_ERROR3            (1<<25)
 397 #define NV_RX_ERROR4            (1<<26)
 398 #define NV_RX_CRCERR            (1<<27)
 399 #define NV_RX_OVERFLOW          (1<<28)
 400 #define NV_RX_FRAMINGERR        (1<<29)
 401 #define NV_RX_ERROR             (1<<30)
 402 #define NV_RX_AVAIL             (1<<31)
 403
 404 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 405 #define NV_RX2_CHECKSUMOK1      (0x10000000)
 406 #define NV_RX2_CHECKSUMOK2      (0x14000000)
 407 #define NV_RX2_CHECKSUMOK3      (0x18000000)
 408 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 409 #define NV_RX2_SUBSTRACT1       (1<<25)
 410 #define NV_RX2_ERROR1           (1<<18)
 411 #define NV_RX2_ERROR2           (1<<19)
 412 #define NV_RX2_ERROR3           (1<<20)
 413 #define NV_RX2_ERROR4           (1<<21)
 414 #define NV_RX2_CRCERR           (1<<22)
 415 #define NV_RX2_OVERFLOW         (1<<23)
 416 #define NV_RX2_FRAMINGERR       (1<<24)
 417 /* error and avail are the same for both */
 418 #define NV_RX2_ERROR            (1<<30)
 419 #define NV_RX2_AVAIL            (1<<31)
 420
 421 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 422 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 423
 424 /* Miscelaneous hardware related defines: */
 425 #define NV_PCI_REGSZ_VER1       0x270
 426 #define NV_PCI_REGSZ_VER2       0x604
 427
 428 /* various timeout delays: all in usec */
 429 #define NV_TXRX_RESET_DELAY     4
 430 #define NV_TXSTOP_DELAY1        10
 431 #define NV_TXSTOP_DELAY1MAX     500000
 432 #define NV_TXSTOP_DELAY2        100
 433 #define NV_RXSTOP_DELAY1        10
 434 #define NV_RXSTOP_DELAY1MAX     500000
 435 #define NV_RXSTOP_DELAY2        100
 436 #define NV_SETUP5_DELAY         5
 437 #define NV_SETUP5_DELAYMAX      50000
 438 #define NV_POWERUP_DELAY        5
 439 #define NV_POWERUP_DELAYMAX     5000
 440 #define NV_MIIBUSY_DELAY        50
 441 #define NV_MIIPHY_DELAY 10
 442 #define NV_MIIPHY_DELAYMAX      10000
 443 #define NV_MAC_RESET_DELAY      64
 444
 445 #define NV_WAKEUPPATTERNS       5
 446 #define NV_WAKEUPMASKENTRIES    4
 447
 448 /* General driver defaults */
 449 #define NV_WATCHDOG_TIMEO       (5*HZ)
 450
 451 #define RX_RING         128
 452 #define TX_RING         256
 453 /*
 454  * If your nic mysteriously hangs then try to reduce the limits
 455  * to 1/0: It might be required to set NV_TX_LASTPACKET in the
 456  * last valid ring entry. But this would be impossible to
 457  * implement - probably a disassembly error.
 458  */
 459 #define TX_LIMIT_STOP   255
 460 #define TX_LIMIT_START  254
 461
 462 /* rx/tx mac addr + type + vlan + align + slack*/
 463 #define NV_RX_HEADERS           (64)
 464 /* even more slack. */
 465 #define NV_RX_ALLOC_PAD         (64)
 466
 467 /* maximum mtu size */
 468 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 469 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 470
 471 #define OOM_REFILL      (1+HZ/20)
 472 #define POLL_WAIT       (1+HZ/100)
 473 #define LINK_TIMEOUT    (3*HZ)
 474
 475 /*
 476  * desc_ver values:
 477  * The nic supports three different descriptor types:
 478  * - DESC_VER_1: Original
 479  * - DESC_VER_2: support for jumbo frames.
 480  * - DESC_VER_3: 64-bit format.
 481  */
 482 #define DESC_VER_1      1
 483 #define DESC_VER_2      2
 484 #define DESC_VER_3      3
 485
 486 /* PHY defines */
 487 #define PHY_OUI_MARVELL 0x5043
 488 #define PHY_OUI_CICADA  0x03f1
 489 #define PHYID1_OUI_MASK 0x03ff
 490 #define PHYID1_OUI_SHFT 6
 491 #define PHYID2_OUI_MASK 0xfc00
 492 #define PHYID2_OUI_SHFT 10
 493 #define PHY_INIT1       0x0f000
 494 #define PHY_INIT2       0x0e00
 495 #define PHY_INIT3       0x01000
 496 #define PHY_INIT4       0x0200
 497 #define PHY_INIT5       0x0004
 498 #define PHY_INIT6       0x02000
 499 #define PHY_GIGABIT     0x0100
 500
 501 #define PHY_TIMEOUT     0x1
 502 #define PHY_ERROR       0x2
 503
 504 #define PHY_100 0x1
 505 #define PHY_1000        0x2
 506 #define PHY_HALF        0x100
 507
 508 /* FIXME: MII defines that should be added to <linux/mii.h> */
 509 #define MII_1000BT_CR   0x09
 510 #define MII_1000BT_SR   0x0a
 511 #define ADVERTISE_1000FULL      0x0200
 512 #define ADVERTISE_1000HALF      0x0100
 513 #define LPA_1000FULL    0x0800
 514 #define LPA_1000HALF    0x0400
 515
 516 /* MSI/MSI-X defines */
 517 #define NV_MSI_X_MAX_VECTORS  8
 518 #define NV_MSI_X_VECTORS_MASK 0x000f
 519 #define NV_MSI_CAPABLE        0x0010
 520 #define NV_MSI_X_CAPABLE      0x0020
 521 #define NV_MSI_ENABLED        0x0040
 522 #define NV_MSI_X_ENABLED      0x0080
 523
 524 #define NV_MSI_X_VECTOR_ALL   0x0
 525 #define NV_MSI_X_VECTOR_RX    0x0
 526 #define NV_MSI_X_VECTOR_TX    0x1
 527 #define NV_MSI_X_VECTOR_OTHER 0x2
 528
 529 /*
 530  * SMP locking:
 531  * All hardware access under dev->priv->lock, except the performance
 532  * critical parts:
 533  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 534  *      by the arch code for interrupts.
 535  * - tx setup is lockless: it relies on dev->xmit_lock. Actual submission
 536  *      needs dev->priv->lock :-(
 537  * - set_multicast_list: preparation lockless, relies on dev->xmit_lock.
 538  */
 539
 540 /* in dev: base, irq */
 541 struct fe_priv {
 542         spinlock_t lock;
 543
 544         /* General data:
 545          * Locking: spin_lock(&np->lock); */
 546         struct net_device_stats stats;
 547         int in_shutdown;
 548         u32 linkspeed;
 549         int duplex;
 550         int autoneg;
 551         int fixed_mode;
 552         int phyaddr;
 553         int wolenabled;
 554         unsigned int phy_oui;
 555         u16 gigabit;
 556
 557         /* General data: RO fields */
 558         dma_addr_t ring_addr;
 559         struct pci_dev *pci_dev;
 560         u32 orig_mac[2];
 561         u32 irqmask;
 562         u32 desc_ver;
 563         u32 txrxctl_bits;
 564         u32 vlanctl_bits;
 565         u32 driver_data;
 566         u32 register_size;
 567
 568         void __iomem *base;
 569
 570         /* rx specific fields.
 571          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 572          */
 573         ring_type rx_ring;
 574         unsigned int cur_rx, refill_rx;
 575         struct sk_buff *rx_skbuff[RX_RING];
 576         dma_addr_t rx_dma[RX_RING];
 577         unsigned int rx_buf_sz;
 578         unsigned int pkt_limit;
 579         struct timer_list oom_kick;
 580         struct timer_list nic_poll;
 581         u32 nic_poll_irq;
 582
 583         /* media detection workaround.
 584          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 585          */
 586         int need_linktimer;
 587         unsigned long link_timeout;
 588         /*
 589          * tx specific fields.
 590          */
 591         ring_type tx_ring;
 592         unsigned int next_tx, nic_tx;
 593         struct sk_buff *tx_skbuff[TX_RING];
 594         dma_addr_t tx_dma[TX_RING];
 595         unsigned int tx_dma_len[TX_RING];
 596         u32 tx_flags;
 597
 598         /* vlan fields */
 599         struct vlan_group *vlangrp;
 600
 601         /* msi/msi-x fields */
 602         u32 msi_flags;
 603         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 604 };
 605
 606 /*
 607  * Maximum number of loops until we assume that a bit in the irq mask
 608  * is stuck. Overridable with module param.
 609  */
 610 static int max_interrupt_work = 5;
 611
 612 /*
 613  * Optimization can be either throuput mode or cpu mode
 614  *
 615  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 616  * CPU Mode: Interrupts are controlled by a timer.
 617  */
 618 #define NV_OPTIMIZATION_MODE_THROUGHPUT 0
 619 #define NV_OPTIMIZATION_MODE_CPU        1
 620 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 621
 622 /*
 623  * Poll interval for timer irq
 624  *
 625  * This interval determines how frequent an interrupt is generated.
 626  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 627  * Min = 0, and Max = 65535
 628  */
 629 static int poll_interval = -1;
 630
 631 /*
 632  * Disable MSI interrupts
 633  */
 634 static int disable_msi = 0;
 635
 636 /*
 637  * Disable MSIX interrupts
 638  */
 639 static int disable_msix = 0;
 640
 641 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 642 {
 643         return netdev_priv(dev);
 644 }
 645
 646 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 647 {
 648         return ((struct fe_priv *)netdev_priv(dev))->base;
 649 }
 650
 651 static inline void pci_push(u8 __iomem *base)
 652 {
 653         /* force out pending posted writes */
 654         readl(base);
 655 }
 656
 657 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 658 {
 659         return le32_to_cpu(prd->FlagLen)
 660                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 661 }
 662
 663 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 664 {
 665         return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
 666 }
 667
 668 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 669                                 int delay, int delaymax, const char *msg)
 670 {
 671         u8 __iomem *base = get_hwbase(dev);
 672
 673         pci_push(base);
 674         do {
 675                 udelay(delay);
 676                 delaymax -= delay;
 677                 if (delaymax < 0) {
 678                         if (msg)
 679                                 printk(msg);
 680                         return 1;
 681                 }
 682         } while ((readl(base + offset) & mask) != target);
 683         return 0;
 684 }
 685
 686 #define NV_SETUP_RX_RING 0x01
 687 #define NV_SETUP_TX_RING 0x02
 688
 689 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
 690 {
 691         struct fe_priv *np = get_nvpriv(dev);
 692         u8 __iomem *base = get_hwbase(dev);
 693
 694         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 695                 if (rxtx_flags & NV_SETUP_RX_RING) {
 696                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 697                 }
 698                 if (rxtx_flags & NV_SETUP_TX_RING) {
 699                         writel((u32) cpu_to_le64(np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
 700                 }
 701         } else {
 702                 if (rxtx_flags & NV_SETUP_RX_RING) {
 703                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 704                         writel((u32) (cpu_to_le64(np->ring_addr) >> 32), base + NvRegRxRingPhysAddrHigh);
 705                 }
 706                 if (rxtx_flags & NV_SETUP_TX_RING) {
 707                         writel((u32) cpu_to_le64(np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
 708                         writel((u32) (cpu_to_le64(np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)) >> 32), base + NvRegTxRingPhysAddrHigh);
 709                 }
 710         }
 711 }
 712
 713 #define MII_READ        (-1)
 714 /* mii_rw: read/write a register on the PHY.
 715  *
 716  * Caller must guarantee serialization
 717  */
 718 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
 719 {
 720         u8 __iomem *base = get_hwbase(dev);
 721         u32 reg;
 722         int retval;
 723
 724         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
 725
 726         reg = readl(base + NvRegMIIControl);
 727         if (reg & NVREG_MIICTL_INUSE) {
 728                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
 729                 udelay(NV_MIIBUSY_DELAY);
 730         }
 731
 732         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
 733         if (value != MII_READ) {
 734                 writel(value, base + NvRegMIIData);
 735                 reg |= NVREG_MIICTL_WRITE;
 736         }
 737         writel(reg, base + NvRegMIIControl);
 738
 739         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
 740                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
 741                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
 742                                 dev->name, miireg, addr);
 743                 retval = -1;
 744         } else if (value != MII_READ) {
 745                 /* it was a write operation - fewer failures are detectable */
 746                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
 747                                 dev->name, value, miireg, addr);
 748                 retval = 0;
 749         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
 750                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
 751                                 dev->name, miireg, addr);
 752                 retval = -1;
 753         } else {
 754                 retval = readl(base + NvRegMIIData);
 755                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
 756                                 dev->name, miireg, addr, retval);
 757         }
 758
 759         return retval;
 760 }
 761
 762 static int phy_reset(struct net_device *dev)
 763 {
 764         struct fe_priv *np = netdev_priv(dev);
 765         u32 miicontrol;
 766         unsigned int tries = 0;
 767
 768         miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 769         miicontrol |= BMCR_RESET;
 770         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
 771                 return -1;
 772         }
 773
 774         /* wait for 500ms */
 775         msleep(500);
 776
 777         /* must wait till reset is deasserted */
 778         while (miicontrol & BMCR_RESET) {
 779                 msleep(10);
 780                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 781                 /* FIXME: 100 tries seem excessive */
 782                 if (tries++ > 100)
 783                         return -1;
 784         }
 785         return 0;
 786 }
 787
 788 static int phy_init(struct net_device *dev)
 789 {
 790         struct fe_priv *np = get_nvpriv(dev);
 791         u8 __iomem *base = get_hwbase(dev);
 792         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
 793
 794         /* set advertise register */
 795         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
 796         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|0x800|0x400);
 797         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
 798                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
 799                 return PHY_ERROR;
 800         }
 801
 802         /* get phy interface type */
 803         phyinterface = readl(base + NvRegPhyInterface);
 804
 805         /* see if gigabit phy */
 806         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
 807         if (mii_status & PHY_GIGABIT) {
 808                 np->gigabit = PHY_GIGABIT;
 809                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
 810                 mii_control_1000 &= ~ADVERTISE_1000HALF;
 811                 if (phyinterface & PHY_RGMII)
 812                         mii_control_1000 |= ADVERTISE_1000FULL;
 813                 else
 814                         mii_control_1000 &= ~ADVERTISE_1000FULL;
 815
 816                 if (mii_rw(dev, np->phyaddr, MII_1000BT_CR, mii_control_1000)) {
 817                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 818                         return PHY_ERROR;
 819                 }
 820         }
 821         else
 822                 np->gigabit = 0;
 823
 824         /* reset the phy */
 825         if (phy_reset(dev)) {
 826                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
 827                 return PHY_ERROR;
 828         }
 829
 830         /* phy vendor specific configuration */
 831         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
 832                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
 833                 phy_reserved &= ~(PHY_INIT1 | PHY_INIT2);
 834                 phy_reserved |= (PHY_INIT3 | PHY_INIT4);
 835                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
 836                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 837                         return PHY_ERROR;
 838                 }
 839                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
 840                 phy_reserved |= PHY_INIT5;
 841                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
 842                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 843                         return PHY_ERROR;
 844                 }
 845         }
 846         if (np->phy_oui == PHY_OUI_CICADA) {
 847                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
 848                 phy_reserved |= PHY_INIT6;
 849                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
 850                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
 851                         return PHY_ERROR;
 852                 }
 853         }
 854
 855         /* restart auto negotiation */
 856         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
 857         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
 858         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
 859                 return PHY_ERROR;
 860         }
 861
 862         return 0;
 863 }
 864
 865 static void nv_start_rx(struct net_device *dev)
 866 {
 867         struct fe_priv *np = netdev_priv(dev);
 868         u8 __iomem *base = get_hwbase(dev);
 869
 870         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
 871         /* Already running? Stop it. */
 872         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
 873                 writel(0, base + NvRegReceiverControl);
 874                 pci_push(base);
 875         }
 876         writel(np->linkspeed, base + NvRegLinkSpeed);
 877         pci_push(base);
 878         writel(NVREG_RCVCTL_START, base + NvRegReceiverControl);
 879         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
 880                                 dev->name, np->duplex, np->linkspeed);
 881         pci_push(base);
 882 }
 883
 884 static void nv_stop_rx(struct net_device *dev)
 885 {
 886         u8 __iomem *base = get_hwbase(dev);
 887
 888         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
 889         writel(0, base + NvRegReceiverControl);
 890         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
 891                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
 892                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
 893
 894         udelay(NV_RXSTOP_DELAY2);
 895         writel(0, base + NvRegLinkSpeed);
 896 }
 897
 898 static void nv_start_tx(struct net_device *dev)
 899 {
 900         u8 __iomem *base = get_hwbase(dev);
 901
 902         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
 903         writel(NVREG_XMITCTL_START, base + NvRegTransmitterControl);
 904         pci_push(base);
 905 }
 906
 907 static void nv_stop_tx(struct net_device *dev)
 908 {
 909         u8 __iomem *base = get_hwbase(dev);
 910
 911         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
 912         writel(0, base + NvRegTransmitterControl);
 913         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
 914                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
 915                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
 916
 917         udelay(NV_TXSTOP_DELAY2);
 918         writel(0, base + NvRegUnknownTransmitterReg);
 919 }
 920
 921 static void nv_txrx_reset(struct net_device *dev)
 922 {
 923         struct fe_priv *np = netdev_priv(dev);
 924         u8 __iomem *base = get_hwbase(dev);
 925
 926         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
 927         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
 928         pci_push(base);
 929         udelay(NV_TXRX_RESET_DELAY);
 930         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
 931         pci_push(base);
 932 }
 933
 934 static void nv_mac_reset(struct net_device *dev)
 935 {
 936         struct fe_priv *np = netdev_priv(dev);
 937         u8 __iomem *base = get_hwbase(dev);
 938
 939         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
 940         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
 941         pci_push(base);
 942         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
 943         pci_push(base);
 944         udelay(NV_MAC_RESET_DELAY);
 945         writel(0, base + NvRegMacReset);
 946         pci_push(base);
 947         udelay(NV_MAC_RESET_DELAY);
 948         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
 949         pci_push(base);
 950 }
 951
 952 /*
 953  * nv_get_stats: dev->get_stats function
 954  * Get latest stats value from the nic.
 955  * Called with read_lock(&dev_base_lock) held for read -
 956  * only synchronized against unregister_netdevice.
 957  */
 958 static struct net_device_stats *nv_get_stats(struct net_device *dev)
 959 {
 960         struct fe_priv *np = netdev_priv(dev);
 961
 962         /* It seems that the nic always generates interrupts and doesn't
 963          * accumulate errors internally. Thus the current values in np->stats
 964          * are already up to date.
 965          */
 966         return &np->stats;
 967 }
 968
 969 /*
 970  * nv_alloc_rx: fill rx ring entries.
 971  * Return 1 if the allocations for the skbs failed and the
 972  * rx engine is without Available descriptors
 973  */
 974 static int nv_alloc_rx(struct net_device *dev)
 975 {
 976         struct fe_priv *np = netdev_priv(dev);
 977         unsigned int refill_rx = np->refill_rx;
 978         int nr;
 979
 980         while (np->cur_rx != refill_rx) {
 981                 struct sk_buff *skb;
 982
 983                 nr = refill_rx % RX_RING;
 984                 if (np->rx_skbuff[nr] == NULL) {
 985
 986                         skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
 987                         if (!skb)
 988                                 break;
 989
 990                         skb->dev = dev;
 991                         np->rx_skbuff[nr] = skb;
 992                 } else {
 993                         skb = np->rx_skbuff[nr];
 994                 }
 995                 np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data,
 996                                         skb->end-skb->data, PCI_DMA_FROMDEVICE);
 997                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 998                         np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
 999                         wmb();
1000                         np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1001                 } else {
1002                         np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
1003                         np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
1004                         wmb();
1005                         np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1006                 }
1007                 dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
1008                                         dev->name, refill_rx);
1009                 refill_rx++;
1010         }
1011         np->refill_rx = refill_rx;
1012         if (np->cur_rx - refill_rx == RX_RING)
1013                 return 1;
1014         return 0;
1015 }
1016
1017 static void nv_do_rx_refill(unsigned long data)
1018 {
1019         struct net_device *dev = (struct net_device *) data;
1020         struct fe_priv *np = netdev_priv(dev);
1021
1022
1023         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1024             ((np->msi_flags & NV_MSI_X_ENABLED) &&
1025              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
1026                 disable_irq(dev->irq);
1027         } else {
1028                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1029         }
1030         if (nv_alloc_rx(dev)) {
1031                 spin_lock(&np->lock);
1032                 if (!np->in_shutdown)
1033                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1034                 spin_unlock(&np->lock);
1035         }
1036         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1037             ((np->msi_flags & NV_MSI_X_ENABLED) &&
1038              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
1039                 enable_irq(dev->irq);
1040         } else {
1041                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1042         }
1043 }
1044
1045 static void nv_init_rx(struct net_device *dev)
1046 {
1047         struct fe_priv *np = netdev_priv(dev);
1048         int i;
1049
1050         np->cur_rx = RX_RING;
1051         np->refill_rx = 0;
1052         for (i = 0; i < RX_RING; i++)
1053                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1054                         np->rx_ring.orig[i].FlagLen = 0;
1055                 else
1056                         np->rx_ring.ex[i].FlagLen = 0;
1057 }
1058
1059 static void nv_init_tx(struct net_device *dev)
1060 {
1061         struct fe_priv *np = netdev_priv(dev);
1062         int i;
1063
1064         np->next_tx = np->nic_tx = 0;
1065         for (i = 0; i < TX_RING; i++) {
1066                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1067                         np->tx_ring.orig[i].FlagLen = 0;
1068                 else
1069                         np->tx_ring.ex[i].FlagLen = 0;
1070                 np->tx_skbuff[i] = NULL;
1071                 np->tx_dma[i] = 0;
1072         }
1073 }
1074
1075 static int nv_init_ring(struct net_device *dev)
1076 {
1077         nv_init_tx(dev);
1078         nv_init_rx(dev);
1079         return nv_alloc_rx(dev);
1080 }
1081
1082 static int nv_release_txskb(struct net_device *dev, unsigned int skbnr)
1083 {
1084         struct fe_priv *np = netdev_priv(dev);
1085
1086         dprintk(KERN_INFO "%s: nv_release_txskb for skbnr %d\n",
1087                 dev->name, skbnr);
1088
1089         if (np->tx_dma[skbnr]) {
1090                 pci_unmap_page(np->pci_dev, np->tx_dma[skbnr],
1091                                np->tx_dma_len[skbnr],
1092                                PCI_DMA_TODEVICE);
1093                 np->tx_dma[skbnr] = 0;
1094         }
1095
1096         if (np->tx_skbuff[skbnr]) {
1097                 dev_kfree_skb_any(np->tx_skbuff[skbnr]);
1098                 np->tx_skbuff[skbnr] = NULL;
1099                 return 1;
1100         } else {
1101                 return 0;
1102         }
1103 }
1104
1105 static void nv_drain_tx(struct net_device *dev)
1106 {
1107         struct fe_priv *np = netdev_priv(dev);
1108         unsigned int i;
1109
1110         for (i = 0; i < TX_RING; i++) {
1111                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1112                         np->tx_ring.orig[i].FlagLen = 0;
1113                 else
1114                         np->tx_ring.ex[i].FlagLen = 0;
1115                 if (nv_release_txskb(dev, i))
1116                         np->stats.tx_dropped++;
1117         }
1118 }
1119
1120 static void nv_drain_rx(struct net_device *dev)
1121 {
1122         struct fe_priv *np = netdev_priv(dev);
1123         int i;
1124         for (i = 0; i < RX_RING; i++) {
1125                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1126                         np->rx_ring.orig[i].FlagLen = 0;
1127                 else
1128                         np->rx_ring.ex[i].FlagLen = 0;
1129                 wmb();
1130                 if (np->rx_skbuff[i]) {
1131                         pci_unmap_single(np->pci_dev, np->rx_dma[i],
1132                                                 np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
1133                                                 PCI_DMA_FROMDEVICE);
1134                         dev_kfree_skb(np->rx_skbuff[i]);
1135                         np->rx_skbuff[i] = NULL;
1136                 }
1137         }
1138 }
1139
1140 static void drain_ring(struct net_device *dev)
1141 {
1142         nv_drain_tx(dev);
1143         nv_drain_rx(dev);
1144 }
1145
1146 /*
1147  * nv_start_xmit: dev->hard_start_xmit function
1148  * Called with dev->xmit_lock held.
1149  */
1150 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1151 {
1152         struct fe_priv *np = netdev_priv(dev);
1153         u32 tx_flags = 0;
1154         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
1155         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1156         unsigned int nr = (np->next_tx - 1) % TX_RING;
1157         unsigned int start_nr = np->next_tx % TX_RING;
1158         unsigned int i;
1159         u32 offset = 0;
1160         u32 bcnt;
1161         u32 size = skb->len-skb->data_len;
1162         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1163         u32 tx_flags_vlan = 0;
1164
1165         /* add fragments to entries count */
1166         for (i = 0; i < fragments; i++) {
1167                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1168                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1169         }
1170
1171         spin_lock_irq(&np->lock);
1172
1173         if ((np->next_tx - np->nic_tx + entries - 1) > TX_LIMIT_STOP) {
1174                 spin_unlock_irq(&np->lock);
1175                 netif_stop_queue(dev);
1176                 return NETDEV_TX_BUSY;
1177         }
1178
1179         /* setup the header buffer */
1180         do {
1181                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1182                 nr = (nr + 1) % TX_RING;
1183
1184                 np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1185                                                 PCI_DMA_TODEVICE);
1186                 np->tx_dma_len[nr] = bcnt;
1187
1188                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1189                         np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
1190                         np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
1191                 } else {
1192                         np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
1193                         np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
1194                         np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
1195                 }
1196                 tx_flags = np->tx_flags;
1197                 offset += bcnt;
1198                 size -= bcnt;
1199         } while(size);
1200
1201         /* setup the fragments */
1202         for (i = 0; i < fragments; i++) {
1203                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1204                 u32 size = frag->size;
1205                 offset = 0;
1206
1207                 do {
1208                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1209                         nr = (nr + 1) % TX_RING;
1210
1211                         np->tx_dma[nr] = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1212                                                       PCI_DMA_TODEVICE);
1213                         np->tx_dma_len[nr] = bcnt;
1214
1215                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1216                                 np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
1217                                 np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
1218                         } else {
1219                                 np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
1220                                 np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
1221                                 np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
1222                         }
1223                         offset += bcnt;
1224                         size -= bcnt;
1225                 } while (size);
1226         }
1227
1228         /* set last fragment flag  */
1229         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1230                 np->tx_ring.orig[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
1231         } else {
1232                 np->tx_ring.ex[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
1233         }
1234
1235         np->tx_skbuff[nr] = skb;
1236
1237 #ifdef NETIF_F_TSO
1238         if (skb_shinfo(skb)->tso_size)
1239                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->tso_size << NV_TX2_TSO_SHIFT);
1240         else
1241 #endif
1242         tx_flags_extra = (skb->ip_summed == CHECKSUM_HW ? (NV_TX2_CHECKSUM_L3|NV_TX2_CHECKSUM_L4) : 0);
1243
1244         /* vlan tag */
1245         if (np->vlangrp && vlan_tx_tag_present(skb)) {
1246                 tx_flags_vlan = NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb);
1247         }
1248
1249         /* set tx flags */
1250         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1251                 np->tx_ring.orig[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
1252         } else {
1253                 np->tx_ring.ex[start_nr].TxVlan = cpu_to_le32(tx_flags_vlan);
1254                 np->tx_ring.ex[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
1255         }
1256
1257         dprintk(KERN_DEBUG "%s: nv_start_xmit: packet %d (entries %d) queued for transmission. tx_flags_extra: %x\n",
1258                 dev->name, np->next_tx, entries, tx_flags_extra);
1259         {
1260                 int j;
1261                 for (j=0; j<64; j++) {
1262                         if ((j%16) == 0)
1263                                 dprintk("\n%03x:", j);
1264                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
1265                 }
1266                 dprintk("\n");
1267         }
1268
1269         np->next_tx += entries;
1270
1271         dev->trans_start = jiffies;
1272         spin_unlock_irq(&np->lock);
1273         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1274         pci_push(get_hwbase(dev));
1275         return NETDEV_TX_OK;
1276 }
1277
1278 /*
1279  * nv_tx_done: check for completed packets, release the skbs.
1280  *
1281  * Caller must own np->lock.
1282  */
1283 static void nv_tx_done(struct net_device *dev)
1284 {
1285         struct fe_priv *np = netdev_priv(dev);
1286         u32 Flags;
1287         unsigned int i;
1288         struct sk_buff *skb;
1289
1290         while (np->nic_tx != np->next_tx) {
1291                 i = np->nic_tx % TX_RING;
1292
1293                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1294                         Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
1295                 else
1296                         Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
1297
1298                 dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
1299                                         dev->name, np->nic_tx, Flags);
1300                 if (Flags & NV_TX_VALID)
1301                         break;
1302                 if (np->desc_ver == DESC_VER_1) {
1303                         if (Flags & NV_TX_LASTPACKET) {
1304                                 skb = np->tx_skbuff[i];
1305                                 if (Flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
1306                                              NV_TX_UNDERFLOW|NV_TX_ERROR)) {
1307                                         if (Flags & NV_TX_UNDERFLOW)
1308                                                 np->stats.tx_fifo_errors++;
1309                                         if (Flags & NV_TX_CARRIERLOST)
1310                                                 np->stats.tx_carrier_errors++;
1311                                         np->stats.tx_errors++;
1312                                 } else {
1313                                         np->stats.tx_packets++;
1314                                         np->stats.tx_bytes += skb->len;
1315                                 }
1316                         }
1317                 } else {
1318                         if (Flags & NV_TX2_LASTPACKET) {
1319                                 skb = np->tx_skbuff[i];
1320                                 if (Flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
1321                                              NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
1322                                         if (Flags & NV_TX2_UNDERFLOW)
1323                                                 np->stats.tx_fifo_errors++;
1324                                         if (Flags & NV_TX2_CARRIERLOST)
1325                                                 np->stats.tx_carrier_errors++;
1326                                         np->stats.tx_errors++;
1327                                 } else {
1328                                         np->stats.tx_packets++;
1329                                         np->stats.tx_bytes += skb->len;
1330                                 }
1331                         }
1332                 }
1333                 nv_release_txskb(dev, i);
1334                 np->nic_tx++;
1335         }
1336         if (np->next_tx - np->nic_tx < TX_LIMIT_START)
1337                 netif_wake_queue(dev);
1338 }
1339
1340 /*
1341  * nv_tx_timeout: dev->tx_timeout function
1342  * Called with dev->xmit_lock held.
1343  */
1344 static void nv_tx_timeout(struct net_device *dev)
1345 {
1346         struct fe_priv *np = netdev_priv(dev);
1347         u8 __iomem *base = get_hwbase(dev);
1348         u32 status;
1349
1350         if (np->msi_flags & NV_MSI_X_ENABLED)
1351                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
1352         else
1353                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
1354
1355         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
1356
1357         {
1358                 int i;
1359
1360                 printk(KERN_INFO "%s: Ring at %lx: next %d nic %d\n",
1361                                 dev->name, (unsigned long)np->ring_addr,
1362                                 np->next_tx, np->nic_tx);
1363                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
1364                 for (i=0;i<=np->register_size;i+= 32) {
1365                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
1366                                         i,
1367                                         readl(base + i + 0), readl(base + i + 4),
1368                                         readl(base + i + 8), readl(base + i + 12),
1369                                         readl(base + i + 16), readl(base + i + 20),
1370                                         readl(base + i + 24), readl(base + i + 28));
1371                 }
1372                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
1373                 for (i=0;i<TX_RING;i+= 4) {
1374                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1375                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
1376                                        i,
1377                                        le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
1378                                        le32_to_cpu(np->tx_ring.orig[i].FlagLen),
1379                                        le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
1380                                        le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
1381                                        le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
1382                                        le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
1383                                        le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
1384                                        le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
1385                         } else {
1386                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
1387                                        i,
1388                                        le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
1389                                        le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
1390                                        le32_to_cpu(np->tx_ring.ex[i].FlagLen),
1391                                        le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
1392                                        le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
1393                                        le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
1394                                        le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
1395                                        le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
1396                                        le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
1397                                        le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
1398                                        le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
1399                                        le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
1400                         }
1401                 }
1402         }
1403
1404         spin_lock_irq(&np->lock);
1405
1406         /* 1) stop tx engine */
1407         nv_stop_tx(dev);
1408
1409         /* 2) check that the packets were not sent already: */
1410         nv_tx_done(dev);
1411
1412         /* 3) if there are dead entries: clear everything */
1413         if (np->next_tx != np->nic_tx) {
1414                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
1415                 nv_drain_tx(dev);
1416                 np->next_tx = np->nic_tx = 0;
1417                 setup_hw_rings(dev, NV_SETUP_TX_RING);
1418                 netif_wake_queue(dev);
1419         }
1420
1421         /* 4) restart tx engine */
1422         nv_start_tx(dev);
1423         spin_unlock_irq(&np->lock);
1424 }
1425
1426 /*
1427  * Called when the nic notices a mismatch between the actual data len on the
1428  * wire and the len indicated in the 802 header
1429  */
1430 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
1431 {
1432         int hdrlen;     /* length of the 802 header */
1433         int protolen;   /* length as stored in the proto field */
1434
1435         /* 1) calculate len according to header */
1436         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
1437                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
1438                 hdrlen = VLAN_HLEN;
1439         } else {
1440                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
1441                 hdrlen = ETH_HLEN;
1442         }
1443         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
1444                                 dev->name, datalen, protolen, hdrlen);
1445         if (protolen > ETH_DATA_LEN)
1446                 return datalen; /* Value in proto field not a len, no checks possible */
1447
1448         protolen += hdrlen;
1449         /* consistency checks: */
1450         if (datalen > ETH_ZLEN) {
1451                 if (datalen >= protolen) {
1452                         /* more data on wire than in 802 header, trim of
1453                          * additional data.
1454                          */
1455                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1456                                         dev->name, protolen);
1457                         return protolen;
1458                 } else {
1459                         /* less data on wire than mentioned in header.
1460                          * Discard the packet.
1461                          */
1462                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
1463                                         dev->name);
1464                         return -1;
1465                 }
1466         } else {
1467                 /* short packet. Accept only if 802 values are also short */
1468                 if (protolen > ETH_ZLEN) {
1469                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
1470                                         dev->name);
1471                         return -1;
1472                 }
1473                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1474                                 dev->name, datalen);
1475                 return datalen;
1476         }
1477 }
1478
1479 static void nv_rx_process(struct net_device *dev)
1480 {
1481         struct fe_priv *np = netdev_priv(dev);
1482         u32 Flags;
1483         u32 vlanflags = 0;
1484
1485
1486         for (;;) {
1487                 struct sk_buff *skb;
1488                 int len;
1489                 int i;
1490                 if (np->cur_rx - np->refill_rx >= RX_RING)
1491                         break;  /* we scanned the whole ring - do not continue */
1492
1493                 i = np->cur_rx % RX_RING;
1494                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1495                         Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
1496                         len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
1497                 } else {
1498                         Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
1499                         len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
1500                         vlanflags = le32_to_cpu(np->rx_ring.ex[i].PacketBufferLow);
1501                 }
1502
1503                 dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
1504                                         dev->name, np->cur_rx, Flags);
1505
1506                 if (Flags & NV_RX_AVAIL)
1507                         break;  /* still owned by hardware, */
1508
1509                 /*
1510                  * the packet is for us - immediately tear down the pci mapping.
1511                  * TODO: check if a prefetch of the first cacheline improves
1512                  * the performance.
1513                  */
1514                 pci_unmap_single(np->pci_dev, np->rx_dma[i],
1515                                 np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
1516                                 PCI_DMA_FROMDEVICE);
1517
1518                 {
1519                         int j;
1520                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",Flags);
1521                         for (j=0; j<64; j++) {
1522                                 if ((j%16) == 0)
1523                                         dprintk("\n%03x:", j);
1524                                 dprintk(" %02x", ((unsigned char*)np->rx_skbuff[i]->data)[j]);
1525                         }
1526                         dprintk("\n");
1527                 }
1528                 /* look at what we actually got: */
1529                 if (np->desc_ver == DESC_VER_1) {
1530                         if (!(Flags & NV_RX_DESCRIPTORVALID))
1531                                 goto next_pkt;
1532
1533                         if (Flags & NV_RX_ERROR) {
1534                                 if (Flags & NV_RX_MISSEDFRAME) {
1535                                         np->stats.rx_missed_errors++;
1536                                         np->stats.rx_errors++;
1537                                         goto next_pkt;
1538                                 }
1539                                 if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
1540                                         np->stats.rx_errors++;
1541                                         goto next_pkt;
1542                                 }
1543                                 if (Flags & NV_RX_CRCERR) {
1544                                         np->stats.rx_crc_errors++;
1545                                         np->stats.rx_errors++;
1546                                         goto next_pkt;
1547                                 }
1548                                 if (Flags & NV_RX_OVERFLOW) {
1549                                         np->stats.rx_over_errors++;
1550                                         np->stats.rx_errors++;
1551                                         goto next_pkt;
1552                                 }
1553                                 if (Flags & NV_RX_ERROR4) {
1554                                         len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1555                                         if (len < 0) {
1556                                                 np->stats.rx_errors++;
1557                                                 goto next_pkt;
1558                                         }
1559                                 }
1560                                 /* framing errors are soft errors. */
1561                                 if (Flags & NV_RX_FRAMINGERR) {
1562                                         if (Flags & NV_RX_SUBSTRACT1) {
1563                                                 len--;
1564                                         }
1565                                 }
1566                         }
1567                 } else {
1568                         if (!(Flags & NV_RX2_DESCRIPTORVALID))
1569                                 goto next_pkt;
1570
1571                         if (Flags & NV_RX2_ERROR) {
1572                                 if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
1573                                         np->stats.rx_errors++;
1574                                         goto next_pkt;
1575                                 }
1576                                 if (Flags & NV_RX2_CRCERR) {
1577                                         np->stats.rx_crc_errors++;
1578                                         np->stats.rx_errors++;
1579                                         goto next_pkt;
1580                                 }
1581                                 if (Flags & NV_RX2_OVERFLOW) {
1582                                         np->stats.rx_over_errors++;
1583                                         np->stats.rx_errors++;
1584                                         goto next_pkt;
1585                                 }
1586                                 if (Flags & NV_RX2_ERROR4) {
1587                                         len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1588                                         if (len < 0) {
1589                                                 np->stats.rx_errors++;
1590                                                 goto next_pkt;
1591                                         }
1592                                 }
1593                                 /* framing errors are soft errors */
1594                                 if (Flags & NV_RX2_FRAMINGERR) {
1595                                         if (Flags & NV_RX2_SUBSTRACT1) {
1596                                                 len--;
1597                                         }
1598                                 }
1599                         }
1600                         Flags &= NV_RX2_CHECKSUMMASK;
1601                         if (Flags == NV_RX2_CHECKSUMOK1 ||
1602                                         Flags == NV_RX2_CHECKSUMOK2 ||
1603                                         Flags == NV_RX2_CHECKSUMOK3) {
1604                                 dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
1605                                 np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
1606                         } else {
1607                                 dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);
1608                         }
1609                 }
1610                 /* got a valid packet - forward it to the network core */
1611                 skb = np->rx_skbuff[i];
1612                 np->rx_skbuff[i] = NULL;
1613
1614                 skb_put(skb, len);
1615                 skb->protocol = eth_type_trans(skb, dev);
1616                 dprintk(KERN_DEBUG "%s: nv_rx_process: packet %d with %d bytes, proto %d accepted.\n",
1617                                         dev->name, np->cur_rx, len, skb->protocol);
1618                 if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT)) {
1619                         vlan_hwaccel_rx(skb, np->vlangrp, vlanflags & NV_RX3_VLAN_TAG_MASK);
1620                 } else {
1621                         netif_rx(skb);
1622                 }
1623                 dev->last_rx = jiffies;
1624                 np->stats.rx_packets++;
1625                 np->stats.rx_bytes += len;
1626 next_pkt:
1627                 np->cur_rx++;
1628         }
1629 }
1630
1631 static void set_bufsize(struct net_device *dev)
1632 {
1633         struct fe_priv *np = netdev_priv(dev);
1634
1635         if (dev->mtu <= ETH_DATA_LEN)
1636                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
1637         else
1638                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
1639 }
1640
1641 /*
1642  * nv_change_mtu: dev->change_mtu function
1643  * Called with dev_base_lock held for read.
1644  */
1645 static int nv_change_mtu(struct net_device *dev, int new_mtu)
1646 {
1647         struct fe_priv *np = netdev_priv(dev);
1648         int old_mtu;
1649
1650         if (new_mtu < 64 || new_mtu > np->pkt_limit)
1651                 return -EINVAL;
1652
1653         old_mtu = dev->mtu;
1654         dev->mtu = new_mtu;
1655
1656         /* return early if the buffer sizes will not change */
1657         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
1658                 return 0;
1659         if (old_mtu == new_mtu)
1660                 return 0;
1661
1662         /* synchronized against open : rtnl_lock() held by caller */
1663         if (netif_running(dev)) {
1664                 u8 __iomem *base = get_hwbase(dev);
1665                 /*
1666                  * It seems that the nic preloads valid ring entries into an
1667                  * internal buffer. The procedure for flushing everything is
1668                  * guessed, there is probably a simpler approach.
1669                  * Changing the MTU is a rare event, it shouldn't matter.
1670                  */
1671                 if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1672                     ((np->msi_flags & NV_MSI_X_ENABLED) &&
1673                      ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
1674                         disable_irq(dev->irq);
1675                 } else {
1676                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1677                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1678                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1679                 }
1680                 spin_lock_bh(&dev->xmit_lock);
1681                 spin_lock(&np->lock);
1682                 /* stop engines */
1683                 nv_stop_rx(dev);
1684                 nv_stop_tx(dev);
1685                 nv_txrx_reset(dev);
1686                 /* drain rx queue */
1687                 nv_drain_rx(dev);
1688                 nv_drain_tx(dev);
1689                 /* reinit driver view of the rx queue */
1690                 nv_init_rx(dev);
1691                 nv_init_tx(dev);
1692                 /* alloc new rx buffers */
1693                 set_bufsize(dev);
1694                 if (nv_alloc_rx(dev)) {
1695                         if (!np->in_shutdown)
1696                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1697                 }
1698                 /* reinit nic view of the rx queue */
1699                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
1700                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
1701                 writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
1702                         base + NvRegRingSizes);
1703                 pci_push(base);
1704                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1705                 pci_push(base);
1706
1707                 /* restart rx engine */
1708                 nv_start_rx(dev);
1709                 nv_start_tx(dev);
1710                 spin_unlock(&np->lock);
1711                 spin_unlock_bh(&dev->xmit_lock);
1712                 if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1713                     ((np->msi_flags & NV_MSI_X_ENABLED) &&
1714                      ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
1715                         enable_irq(dev->irq);
1716                 } else {
1717                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1718                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1719                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1720                 }
1721         }
1722         return 0;
1723 }
1724
1725 static void nv_copy_mac_to_hw(struct net_device *dev)
1726 {
1727         u8 __iomem *base = get_hwbase(dev);
1728         u32 mac[2];
1729
1730         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
1731                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
1732         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
1733
1734         writel(mac[0], base + NvRegMacAddrA);
1735         writel(mac[1], base + NvRegMacAddrB);
1736 }
1737
1738 /*
1739  * nv_set_mac_address: dev->set_mac_address function
1740  * Called with rtnl_lock() held.
1741  */
1742 static int nv_set_mac_address(struct net_device *dev, void *addr)
1743 {
1744         struct fe_priv *np = netdev_priv(dev);
1745         struct sockaddr *macaddr = (struct sockaddr*)addr;
1746
1747         if(!is_valid_ether_addr(macaddr->sa_data))
1748                 return -EADDRNOTAVAIL;
1749
1750         /* synchronized against open : rtnl_lock() held by caller */
1751         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
1752
1753         if (netif_running(dev)) {
1754                 spin_lock_bh(&dev->xmit_lock);
1755                 spin_lock_irq(&np->lock);
1756
1757                 /* stop rx engine */
1758                 nv_stop_rx(dev);
1759
1760                 /* set mac address */
1761                 nv_copy_mac_to_hw(dev);
1762
1763                 /* restart rx engine */
1764                 nv_start_rx(dev);
1765                 spin_unlock_irq(&np->lock);
1766                 spin_unlock_bh(&dev->xmit_lock);
1767         } else {
1768                 nv_copy_mac_to_hw(dev);
1769         }
1770         return 0;
1771 }
1772
1773 /*
1774  * nv_set_multicast: dev->set_multicast function
1775  * Called with dev->xmit_lock held.
1776  */
1777 static void nv_set_multicast(struct net_device *dev)
1778 {
1779         struct fe_priv *np = netdev_priv(dev);
1780         u8 __iomem *base = get_hwbase(dev);
1781         u32 addr[2];
1782         u32 mask[2];
1783         u32 pff;
1784
1785         memset(addr, 0, sizeof(addr));
1786         memset(mask, 0, sizeof(mask));
1787
1788         if (dev->flags & IFF_PROMISC) {
1789                 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name);
1790                 pff = NVREG_PFF_PROMISC;
1791         } else {
1792                 pff = NVREG_PFF_MYADDR;
1793
1794                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
1795                         u32 alwaysOff[2];
1796                         u32 alwaysOn[2];
1797
1798                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
1799                         if (dev->flags & IFF_ALLMULTI) {
1800                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
1801                         } else {
1802                                 struct dev_mc_list *walk;
1803
1804                                 walk = dev->mc_list;
1805                                 while (walk != NULL) {
1806                                         u32 a, b;
1807                                         a = le32_to_cpu(*(u32 *) walk->dmi_addr);
1808                                         b = le16_to_cpu(*(u16 *) (&walk->dmi_addr[4]));
1809                                         alwaysOn[0] &= a;
1810                                         alwaysOff[0] &= ~a;
1811                                         alwaysOn[1] &= b;
1812                                         alwaysOff[1] &= ~b;
1813                                         walk = walk->next;
1814                                 }
1815                         }
1816                         addr[0] = alwaysOn[0];
1817                         addr[1] = alwaysOn[1];
1818                         mask[0] = alwaysOn[0] | alwaysOff[0];
1819                         mask[1] = alwaysOn[1] | alwaysOff[1];
1820                 }
1821         }
1822         addr[0] |= NVREG_MCASTADDRA_FORCE;
1823         pff |= NVREG_PFF_ALWAYS;
1824         spin_lock_irq(&np->lock);
1825         nv_stop_rx(dev);
1826         writel(addr[0], base + NvRegMulticastAddrA);
1827         writel(addr[1], base + NvRegMulticastAddrB);
1828         writel(mask[0], base + NvRegMulticastMaskA);
1829         writel(mask[1], base + NvRegMulticastMaskB);
1830         writel(pff, base + NvRegPacketFilterFlags);
1831         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
1832                 dev->name);
1833         nv_start_rx(dev);
1834         spin_unlock_irq(&np->lock);
1835 }
1836
1837 /**
1838  * nv_update_linkspeed: Setup the MAC according to the link partner
1839  * @dev: Network device to be configured
1840  *
1841  * The function queries the PHY and checks if there is a link partner.
1842  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
1843  * set to 10 MBit HD.
1844  *
1845  * The function returns 0 if there is no link partner and 1 if there is
1846  * a good link partner.
1847  */
1848 static int nv_update_linkspeed(struct net_device *dev)
1849 {
1850         struct fe_priv *np = netdev_priv(dev);
1851         u8 __iomem *base = get_hwbase(dev);
1852         int adv, lpa;
1853         int newls = np->linkspeed;
1854         int newdup = np->duplex;
1855         int mii_status;
1856         int retval = 0;
1857         u32 control_1000, status_1000, phyreg;
1858
1859         /* BMSR_LSTATUS is latched, read it twice:
1860          * we want the current value.
1861          */
1862         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1863         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1864
1865         if (!(mii_status & BMSR_LSTATUS)) {
1866                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
1867                                 dev->name);
1868                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1869                 newdup = 0;
1870                 retval = 0;
1871                 goto set_speed;
1872         }
1873
1874         if (np->autoneg == 0) {
1875                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
1876                                 dev->name, np->fixed_mode);
1877                 if (np->fixed_mode & LPA_100FULL) {
1878                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1879                         newdup = 1;
1880                 } else if (np->fixed_mode & LPA_100HALF) {
1881                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1882                         newdup = 0;
1883                 } else if (np->fixed_mode & LPA_10FULL) {
1884                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1885                         newdup = 1;
1886                 } else {
1887                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1888                         newdup = 0;
1889                 }
1890                 retval = 1;
1891                 goto set_speed;
1892         }
1893         /* check auto negotiation is complete */
1894         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
1895                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
1896                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1897                 newdup = 0;
1898                 retval = 0;
1899                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
1900                 goto set_speed;
1901         }
1902
1903         retval = 1;
1904         if (np->gigabit == PHY_GIGABIT) {
1905                 control_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
1906                 status_1000 = mii_rw(dev, np->phyaddr, MII_1000BT_SR, MII_READ);
1907
1908                 if ((control_1000 & ADVERTISE_1000FULL) &&
1909                         (status_1000 & LPA_1000FULL)) {
1910                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
1911                                 dev->name);
1912                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
1913                         newdup = 1;
1914                         goto set_speed;
1915                 }
1916         }
1917
1918         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1919         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
1920         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
1921                                 dev->name, adv, lpa);
1922
1923         /* FIXME: handle parallel detection properly */
1924         lpa = lpa & adv;
1925         if (lpa & LPA_100FULL) {
1926                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1927                 newdup = 1;
1928         } else if (lpa & LPA_100HALF) {
1929                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
1930                 newdup = 0;
1931         } else if (lpa & LPA_10FULL) {
1932                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1933                 newdup = 1;
1934         } else if (lpa & LPA_10HALF) {
1935                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1936                 newdup = 0;
1937         } else {
1938                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, lpa);
1939                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
1940                 newdup = 0;
1941         }
1942
1943 set_speed:
1944         if (np->duplex == newdup && np->linkspeed == newls)
1945                 return retval;
1946
1947         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
1948                         dev->name, np->linkspeed, np->duplex, newls, newdup);
1949
1950         np->duplex = newdup;
1951         np->linkspeed = newls;
1952
1953         if (np->gigabit == PHY_GIGABIT) {
1954                 phyreg = readl(base + NvRegRandomSeed);
1955                 phyreg &= ~(0x3FF00);
1956                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
1957                         phyreg |= NVREG_RNDSEED_FORCE3;
1958                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
1959                         phyreg |= NVREG_RNDSEED_FORCE2;
1960                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
1961                         phyreg |= NVREG_RNDSEED_FORCE;
1962                 writel(phyreg, base + NvRegRandomSeed);
1963         }
1964
1965         phyreg = readl(base + NvRegPhyInterface);
1966         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
1967         if (np->duplex == 0)
1968                 phyreg |= PHY_HALF;
1969         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
1970                 phyreg |= PHY_100;
1971         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
1972                 phyreg |= PHY_1000;
1973         writel(phyreg, base + NvRegPhyInterface);
1974
1975         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
1976                 base + NvRegMisc1);
1977         pci_push(base);
1978         writel(np->linkspeed, base + NvRegLinkSpeed);
1979         pci_push(base);
1980
1981         return retval;
1982 }
1983
1984 static void nv_linkchange(struct net_device *dev)
1985 {
1986         if (nv_update_linkspeed(dev)) {
1987                 if (!netif_carrier_ok(dev)) {
1988                         netif_carrier_on(dev);
1989                         printk(KERN_INFO "%s: link up.\n", dev->name);
1990                         nv_start_rx(dev);
1991                 }
1992         } else {
1993                 if (netif_carrier_ok(dev)) {
1994                         netif_carrier_off(dev);
1995                         printk(KERN_INFO "%s: link down.\n", dev->name);
1996                         nv_stop_rx(dev);
1997                 }
1998         }
1999 }
2000
2001 static void nv_link_irq(struct net_device *dev)
2002 {
2003         u8 __iomem *base = get_hwbase(dev);
2004         u32 miistat;
2005
2006         miistat = readl(base + NvRegMIIStatus);
2007         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
2008         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
2009
2010         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
2011                 nv_linkchange(dev);
2012         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
2013 }
2014
2015 static irqreturn_t nv_nic_irq(int foo, void *data, struct pt_regs *regs)
2016 {
2017         struct net_device *dev = (struct net_device *) data;
2018         struct fe_priv *np = netdev_priv(dev);
2019         u8 __iomem *base = get_hwbase(dev);
2020         u32 events;
2021         int i;
2022
2023         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
2024
2025         for (i=0; ; i++) {
2026                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
2027                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2028                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2029                 } else {
2030                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2031                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
2032                 }
2033                 pci_push(base);
2034                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2035                 if (!(events & np->irqmask))
2036                         break;
2037
2038                 spin_lock(&np->lock);
2039                 nv_tx_done(dev);
2040                 spin_unlock(&np->lock);
2041
2042                 nv_rx_process(dev);
2043                 if (nv_alloc_rx(dev)) {
2044                         spin_lock(&np->lock);
2045                         if (!np->in_shutdown)
2046                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2047                         spin_unlock(&np->lock);
2048                 }
2049
2050                 if (events & NVREG_IRQ_LINK) {
2051                         spin_lock(&np->lock);
2052                         nv_link_irq(dev);
2053                         spin_unlock(&np->lock);
2054                 }
2055                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
2056                         spin_lock(&np->lock);
2057                         nv_linkchange(dev);
2058                         spin_unlock(&np->lock);
2059                         np->link_timeout = jiffies + LINK_TIMEOUT;
2060                 }
2061                 if (events & (NVREG_IRQ_TX_ERR)) {
2062                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2063                                                 dev->name, events);
2064                 }
2065                 if (events & (NVREG_IRQ_UNKNOWN)) {
2066                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2067                                                 dev->name, events);
2068                 }
2069                 if (i > max_interrupt_work) {
2070                         spin_lock(&np->lock);
2071                         /* disable interrupts on the nic */
2072                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2073                                 writel(0, base + NvRegIrqMask);
2074                         else
2075                                 writel(np->irqmask, base + NvRegIrqMask);
2076                         pci_push(base);
2077
2078                         if (!np->in_shutdown) {
2079                                 np->nic_poll_irq = np->irqmask;
2080                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2081                         }
2082                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
2083                         spin_unlock(&np->lock);
2084                         break;
2085                 }
2086
2087         }
2088         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
2089
2090         return IRQ_RETVAL(i);
2091 }
2092
2093 static irqreturn_t nv_nic_irq_tx(int foo, void *data, struct pt_regs *regs)
2094 {
2095         struct net_device *dev = (struct net_device *) data;
2096         struct fe_priv *np = netdev_priv(dev);
2097         u8 __iomem *base = get_hwbase(dev);
2098         u32 events;
2099         int i;
2100
2101         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
2102
2103         for (i=0; ; i++) {
2104                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
2105                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
2106                 pci_push(base);
2107                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
2108                 if (!(events & np->irqmask))
2109                         break;
2110
2111                 spin_lock(&np->lock);
2112                 nv_tx_done(dev);
2113                 spin_unlock(&np->lock);
2114
2115                 if (events & (NVREG_IRQ_TX_ERR)) {
2116                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2117                                                 dev->name, events);
2118                 }
2119                 if (i > max_interrupt_work) {
2120                         spin_lock(&np->lock);
2121                         /* disable interrupts on the nic */
2122                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
2123                         pci_push(base);
2124
2125                         if (!np->in_shutdown) {
2126                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
2127                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2128                         }
2129                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
2130                         spin_unlock(&np->lock);
2131                         break;
2132                 }
2133
2134         }
2135         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
2136
2137         return IRQ_RETVAL(i);
2138 }
2139
2140 static irqreturn_t nv_nic_irq_rx(int foo, void *data, struct pt_regs *regs)
2141 {
2142         struct net_device *dev = (struct net_device *) data;
2143         struct fe_priv *np = netdev_priv(dev);
2144         u8 __iomem *base = get_hwbase(dev);
2145         u32 events;
2146         int i;
2147
2148         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
2149
2150         for (i=0; ; i++) {
2151                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
2152                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
2153                 pci_push(base);
2154                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
2155                 if (!(events & np->irqmask))
2156                         break;
2157
2158                 nv_rx_process(dev);
2159                 if (nv_alloc_rx(dev)) {
2160                         spin_lock(&np->lock);
2161                         if (!np->in_shutdown)
2162                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2163                         spin_unlock(&np->lock);
2164                 }
2165
2166                 if (i > max_interrupt_work) {
2167                         spin_lock(&np->lock);
2168                         /* disable interrupts on the nic */
2169                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2170                         pci_push(base);
2171
2172                         if (!np->in_shutdown) {
2173                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
2174                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2175                         }
2176                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
2177                         spin_unlock(&np->lock);
2178                         break;
2179                 }
2180
2181         }
2182         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
2183
2184         return IRQ_RETVAL(i);
2185 }
2186
2187 static irqreturn_t nv_nic_irq_other(int foo, void *data, struct pt_regs *regs)
2188 {
2189         struct net_device *dev = (struct net_device *) data;
2190         struct fe_priv *np = netdev_priv(dev);
2191         u8 __iomem *base = get_hwbase(dev);
2192         u32 events;
2193         int i;
2194
2195         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
2196
2197         for (i=0; ; i++) {
2198                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
2199                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
2200                 pci_push(base);
2201                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2202                 if (!(events & np->irqmask))
2203                         break;
2204
2205                 if (events & NVREG_IRQ_LINK) {
2206                         spin_lock(&np->lock);
2207                         nv_link_irq(dev);
2208                         spin_unlock(&np->lock);
2209                 }
2210                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
2211                         spin_lock(&np->lock);
2212                         nv_linkchange(dev);
2213                         spin_unlock(&np->lock);
2214                         np->link_timeout = jiffies + LINK_TIMEOUT;
2215                 }
2216                 if (events & (NVREG_IRQ_UNKNOWN)) {
2217                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2218                                                 dev->name, events);
2219                 }
2220                 if (i > max_interrupt_work) {
2221                         spin_lock(&np->lock);
2222                         /* disable interrupts on the nic */
2223                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
2224                         pci_push(base);
2225
2226                         if (!np->in_shutdown) {
2227                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
2228                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2229                         }
2230                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
2231                         spin_unlock(&np->lock);
2232                         break;
2233                 }
2234
2235         }
2236         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
2237
2238         return IRQ_RETVAL(i);
2239 }
2240
2241 static void nv_do_nic_poll(unsigned long data)
2242 {
2243         struct net_device *dev = (struct net_device *) data;
2244         struct fe_priv *np = netdev_priv(dev);
2245         u8 __iomem *base = get_hwbase(dev);
2246         u32 mask = 0;
2247
2248         /*
2249          * First disable irq(s) and then
2250          * reenable interrupts on the nic, we have to do this before calling
2251          * nv_nic_irq because that may decide to do otherwise
2252          */
2253
2254         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
2255             ((np->msi_flags & NV_MSI_X_ENABLED) &&
2256              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
2257                 disable_irq(dev->irq);
2258                 mask = np->irqmask;
2259         } else {
2260                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
2261                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
2262                         mask |= NVREG_IRQ_RX_ALL;
2263                 }
2264                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
2265                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
2266                         mask |= NVREG_IRQ_TX_ALL;
2267                 }
2268                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
2269                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
2270                         mask |= NVREG_IRQ_OTHER;
2271                 }
2272         }
2273         np->nic_poll_irq = 0;
2274
2275         /* FIXME: Do we need synchronize_irq(dev->irq) here? */
2276
2277         writel(mask, base + NvRegIrqMask);
2278         pci_push(base);
2279
2280         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
2281             ((np->msi_flags & NV_MSI_X_ENABLED) &&
2282              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1))) {
2283                 nv_nic_irq((int) 0, (void *) data, (struct pt_regs *) NULL);
2284                 enable_irq(dev->irq);
2285         } else {
2286                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
2287                         nv_nic_irq_rx((int) 0, (void *) data, (struct pt_regs *) NULL);
2288                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
2289                 }
2290                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
2291                         nv_nic_irq_tx((int) 0, (void *) data, (struct pt_regs *) NULL);
2292                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
2293                 }
2294                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
2295                         nv_nic_irq_other((int) 0, (void *) data, (struct pt_regs *) NULL);
2296                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
2297                 }
2298         }
2299 }
2300
2301 #ifdef CONFIG_NET_POLL_CONTROLLER
2302 static void nv_poll_controller(struct net_device *dev)
2303 {
2304         nv_do_nic_poll((unsigned long) dev);
2305 }
2306 #endif
2307
2308 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2309 {
2310         struct fe_priv *np = netdev_priv(dev);
2311         strcpy(info->driver, "forcedeth");
2312         strcpy(info->version, FORCEDETH_VERSION);
2313         strcpy(info->bus_info, pci_name(np->pci_dev));
2314 }
2315
2316 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
2317 {
2318         struct fe_priv *np = netdev_priv(dev);
2319         wolinfo->supported = WAKE_MAGIC;
2320
2321         spin_lock_irq(&np->lock);
2322         if (np->wolenabled)
2323                 wolinfo->wolopts = WAKE_MAGIC;
2324         spin_unlock_irq(&np->lock);
2325 }
2326
2327 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
2328 {
2329         struct fe_priv *np = netdev_priv(dev);
2330         u8 __iomem *base = get_hwbase(dev);
2331
2332         spin_lock_irq(&np->lock);
2333         if (wolinfo->wolopts == 0) {
2334                 writel(0, base + NvRegWakeUpFlags);
2335                 np->wolenabled = 0;
2336         }
2337         if (wolinfo->wolopts & WAKE_MAGIC) {
2338                 writel(NVREG_WAKEUPFLAGS_ENABLE, base + NvRegWakeUpFlags);
2339                 np->wolenabled = 1;
2340         }
2341         spin_unlock_irq(&np->lock);
2342         return 0;
2343 }
2344
2345 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2346 {
2347         struct fe_priv *np = netdev_priv(dev);
2348         int adv;
2349
2350         spin_lock_irq(&np->lock);
2351         ecmd->port = PORT_MII;
2352         if (!netif_running(dev)) {
2353                 /* We do not track link speed / duplex setting if the
2354                  * interface is disabled. Force a link check */
2355                 nv_update_linkspeed(dev);
2356         }
2357         switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
2358                 case NVREG_LINKSPEED_10:
2359                         ecmd->speed = SPEED_10;
2360                         break;
2361                 case NVREG_LINKSPEED_100:
2362                         ecmd->speed = SPEED_100;
2363                         break;
2364                 case NVREG_LINKSPEED_1000:
2365                         ecmd->speed = SPEED_1000;
2366                         break;
2367         }
2368         ecmd->duplex = DUPLEX_HALF;
2369         if (np->duplex)
2370                 ecmd->duplex = DUPLEX_FULL;
2371
2372         ecmd->autoneg = np->autoneg;
2373
2374         ecmd->advertising = ADVERTISED_MII;
2375         if (np->autoneg) {
2376                 ecmd->advertising |= ADVERTISED_Autoneg;
2377                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2378         } else {
2379                 adv = np->fixed_mode;
2380         }
2381         if (adv & ADVERTISE_10HALF)
2382                 ecmd->advertising |= ADVERTISED_10baseT_Half;
2383         if (adv & ADVERTISE_10FULL)
2384                 ecmd->advertising |= ADVERTISED_10baseT_Full;
2385         if (adv & ADVERTISE_100HALF)
2386                 ecmd->advertising |= ADVERTISED_100baseT_Half;
2387         if (adv & ADVERTISE_100FULL)
2388                 ecmd->advertising |= ADVERTISED_100baseT_Full;
2389         if (np->autoneg && np->gigabit == PHY_GIGABIT) {
2390                 adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
2391                 if (adv & ADVERTISE_1000FULL)
2392                         ecmd->advertising |= ADVERTISED_1000baseT_Full;
2393         }
2394
2395         ecmd->supported = (SUPPORTED_Autoneg |
2396                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
2397                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
2398                 SUPPORTED_MII);
2399         if (np->gigabit == PHY_GIGABIT)
2400                 ecmd->supported |= SUPPORTED_1000baseT_Full;
2401
2402         ecmd->phy_address = np->phyaddr;
2403         ecmd->transceiver = XCVR_EXTERNAL;
2404
2405         /* ignore maxtxpkt, maxrxpkt for now */
2406         spin_unlock_irq(&np->lock);
2407         return 0;
2408 }
2409
2410 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2411 {
2412         struct fe_priv *np = netdev_priv(dev);
2413
2414         if (ecmd->port != PORT_MII)
2415                 return -EINVAL;
2416         if (ecmd->transceiver != XCVR_EXTERNAL)
2417                 return -EINVAL;
2418         if (ecmd->phy_address != np->phyaddr) {
2419                 /* TODO: support switching between multiple phys. Should be
2420                  * trivial, but not enabled due to lack of test hardware. */
2421                 return -EINVAL;
2422         }
2423         if (ecmd->autoneg == AUTONEG_ENABLE) {
2424                 u32 mask;
2425
2426                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
2427                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
2428                 if (np->gigabit == PHY_GIGABIT)
2429                         mask |= ADVERTISED_1000baseT_Full;
2430
2431                 if ((ecmd->advertising & mask) == 0)
2432                         return -EINVAL;
2433
2434         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
2435                 /* Note: autonegotiation disable, speed 1000 intentionally
2436                  * forbidden - noone should need that. */
2437
2438                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
2439                         return -EINVAL;
2440                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
2441                         return -EINVAL;
2442         } else {
2443                 return -EINVAL;
2444         }
2445
2446         spin_lock_irq(&np->lock);
2447         if (ecmd->autoneg == AUTONEG_ENABLE) {
2448                 int adv, bmcr;
2449
2450                 np->autoneg = 1;
2451
2452                 /* advertise only what has been requested */
2453                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2454                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
2455                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
2456                         adv |= ADVERTISE_10HALF;
2457                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
2458                         adv |= ADVERTISE_10FULL;
2459                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
2460                         adv |= ADVERTISE_100HALF;
2461                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
2462                         adv |= ADVERTISE_100FULL;
2463                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
2464
2465                 if (np->gigabit == PHY_GIGABIT) {
2466                         adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
2467                         adv &= ~ADVERTISE_1000FULL;
2468                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
2469                                 adv |= ADVERTISE_1000FULL;
2470                         mii_rw(dev, np->phyaddr, MII_1000BT_CR, adv);
2471                 }
2472
2473                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
2474                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
2475                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
2476
2477         } else {
2478                 int adv, bmcr;
2479
2480                 np->autoneg = 0;
2481
2482                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2483                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
2484                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
2485                         adv |= ADVERTISE_10HALF;
2486                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
2487                         adv |= ADVERTISE_10FULL;
2488                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
2489                         adv |= ADVERTISE_100HALF;
2490                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
2491                         adv |= ADVERTISE_100FULL;
2492                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
2493                 np->fixed_mode = adv;
2494
2495                 if (np->gigabit == PHY_GIGABIT) {
2496                         adv = mii_rw(dev, np->phyaddr, MII_1000BT_CR, MII_READ);
2497                         adv &= ~ADVERTISE_1000FULL;
2498                         mii_rw(dev, np->phyaddr, MII_1000BT_CR, adv);
2499                 }
2500
2501                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
2502                 bmcr |= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_FULLDPLX);
2503                 if (adv & (ADVERTISE_10FULL|ADVERTISE_100FULL))
2504                         bmcr |= BMCR_FULLDPLX;
2505                 if (adv & (ADVERTISE_100HALF|ADVERTISE_100FULL))
2506                         bmcr |= BMCR_SPEED100;
2507                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
2508
2509                 if (netif_running(dev)) {
2510                         /* Wait a bit and then reconfigure the nic. */
2511                         udelay(10);
2512                         nv_linkchange(dev);
2513                 }
2514         }
2515         spin_unlock_irq(&np->lock);
2516
2517         return 0;
2518 }
2519
2520 #define FORCEDETH_REGS_VER      1
2521
2522 static int nv_get_regs_len(struct net_device *dev)
2523 {
2524         struct fe_priv *np = netdev_priv(dev);
2525         return np->register_size;
2526 }
2527
2528 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
2529 {
2530         struct fe_priv *np = netdev_priv(dev);
2531         u8 __iomem *base = get_hwbase(dev);
2532         u32 *rbuf = buf;
2533         int i;
2534
2535         regs->version = FORCEDETH_REGS_VER;
2536         spin_lock_irq(&np->lock);
2537         for (i = 0;i <= np->register_size/sizeof(u32); i++)
2538                 rbuf[i] = readl(base + i*sizeof(u32));
2539         spin_unlock_irq(&np->lock);
2540 }
2541
2542 static int nv_nway_reset(struct net_device *dev)
2543 {
2544         struct fe_priv *np = netdev_priv(dev);
2545         int ret;
2546
2547         spin_lock_irq(&np->lock);
2548         if (np->autoneg) {
2549                 int bmcr;
2550
2551                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
2552                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
2553                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
2554
2555                 ret = 0;
2556         } else {
2557                 ret = -EINVAL;
2558         }
2559         spin_unlock_irq(&np->lock);
2560
2561         return ret;
2562 }
2563
2564 static struct ethtool_ops ops = {
2565         .get_drvinfo = nv_get_drvinfo,
2566         .get_link = ethtool_op_get_link,
2567         .get_wol = nv_get_wol,
2568         .set_wol = nv_set_wol,
2569         .get_settings = nv_get_settings,
2570         .set_settings = nv_set_settings,
2571         .get_regs_len = nv_get_regs_len,
2572         .get_regs = nv_get_regs,
2573         .nway_reset = nv_nway_reset,
2574         .get_perm_addr = ethtool_op_get_perm_addr,
2575 };
2576
2577 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
2578 {
2579         struct fe_priv *np = get_nvpriv(dev);
2580
2581         spin_lock_irq(&np->lock);
2582
2583         /* save vlan group */
2584         np->vlangrp = grp;
2585
2586         if (grp) {
2587                 /* enable vlan on MAC */
2588                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
2589         } else {
2590                 /* disable vlan on MAC */
2591                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
2592                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
2593         }
2594
2595         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2596
2597         spin_unlock_irq(&np->lock);
2598 };
2599
2600 static void nv_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2601 {
2602         /* nothing to do */
2603 };
2604
2605 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
2606 {
2607         u8 __iomem *base = get_hwbase(dev);
2608         int i;
2609         u32 msixmap = 0;
2610
2611         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
2612          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
2613          * the remaining 8 interrupts.
2614          */
2615         for (i = 0; i < 8; i++) {
2616                 if ((irqmask >> i) & 0x1) {
2617                         msixmap |= vector << (i << 2);
2618                 }
2619         }
2620         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
2621
2622         msixmap = 0;
2623         for (i = 0; i < 8; i++) {
2624                 if ((irqmask >> (i + 8)) & 0x1) {
2625                         msixmap |= vector << (i << 2);
2626                 }
2627         }
2628         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
2629 }
2630
2631 static int nv_open(struct net_device *dev)
2632 {
2633         struct fe_priv *np = netdev_priv(dev);
2634         u8 __iomem *base = get_hwbase(dev);
2635         int ret = 1;
2636         int oom, i;
2637
2638         dprintk(KERN_DEBUG "nv_open: begin\n");
2639
2640         /* 1) erase previous misconfiguration */
2641         if (np->driver_data & DEV_HAS_POWER_CNTRL)
2642                 nv_mac_reset(dev);
2643         /* 4.1-1: stop adapter: ignored, 4.3 seems to be overkill */
2644         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
2645         writel(0, base + NvRegMulticastAddrB);
2646         writel(0, base + NvRegMulticastMaskA);
2647         writel(0, base + NvRegMulticastMaskB);
2648         writel(0, base + NvRegPacketFilterFlags);
2649
2650         writel(0, base + NvRegTransmitterControl);
2651         writel(0, base + NvRegReceiverControl);
2652
2653         writel(0, base + NvRegAdapterControl);
2654
2655         /* 2) initialize descriptor rings */
2656         set_bufsize(dev);
2657         oom = nv_init_ring(dev);
2658
2659         writel(0, base + NvRegLinkSpeed);
2660         writel(0, base + NvRegUnknownTransmitterReg);
2661         nv_txrx_reset(dev);
2662         writel(0, base + NvRegUnknownSetupReg6);
2663
2664         np->in_shutdown = 0;
2665
2666         /* 3) set mac address */
2667         nv_copy_mac_to_hw(dev);
2668
2669         /* 4) give hw rings */
2670         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2671         writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
2672                 base + NvRegRingSizes);
2673
2674         /* 5) continue setup */
2675         writel(np->linkspeed, base + NvRegLinkSpeed);
2676         writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);
2677         writel(np->txrxctl_bits, base + NvRegTxRxControl);
2678         writel(np->vlanctl_bits, base + NvRegVlanControl);
2679         pci_push(base);
2680         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
2681         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
2682                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
2683                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
2684
2685         writel(0, base + NvRegUnknownSetupReg4);
2686         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2687         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
2688
2689         /* 6) continue setup */
2690         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
2691         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
2692         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
2693         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2694
2695         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
2696         get_random_bytes(&i, sizeof(i));
2697         writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
2698         writel(NVREG_UNKSETUP1_VAL, base + NvRegUnknownSetupReg1);
2699         writel(NVREG_UNKSETUP2_VAL, base + NvRegUnknownSetupReg2);
2700         if (poll_interval == -1) {
2701                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
2702                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
2703                 else
2704                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
2705         }
2706         else
2707                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
2708         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
2709         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
2710                         base + NvRegAdapterControl);
2711         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
2712         writel(NVREG_UNKSETUP4_VAL, base + NvRegUnknownSetupReg4);
2713         writel(NVREG_WAKEUPFLAGS_VAL, base + NvRegWakeUpFlags);
2714
2715         i = readl(base + NvRegPowerState);
2716         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
2717                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
2718
2719         pci_push(base);
2720         udelay(10);
2721         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
2722
2723         writel(0, base + NvRegIrqMask);
2724         pci_push(base);
2725         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
2726         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2727         pci_push(base);
2728
2729         if (np->msi_flags & NV_MSI_X_CAPABLE) {
2730                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
2731                         np->msi_x_entry[i].entry = i;
2732                 }
2733                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
2734                         np->msi_flags |= NV_MSI_X_ENABLED;
2735                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
2736                                 /* Request irq for rx handling */
2737                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, SA_SHIRQ, dev->name, dev) != 0) {
2738                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
2739                                         pci_disable_msix(np->pci_dev);
2740                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2741                                         goto out_drain;
2742                                 }
2743                                 /* Request irq for tx handling */
2744                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, SA_SHIRQ, dev->name, dev) != 0) {
2745                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
2746                                         pci_disable_msix(np->pci_dev);
2747                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2748                                         goto out_drain;
2749                                 }
2750                                 /* Request irq for link and timer handling */
2751                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, SA_SHIRQ, dev->name, dev) != 0) {
2752                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
2753                                         pci_disable_msix(np->pci_dev);
2754                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2755                                         goto out_drain;
2756                                 }
2757
2758                                 /* map interrupts to their respective vector */
2759                                 writel(0, base + NvRegMSIXMap0);
2760                                 writel(0, base + NvRegMSIXMap1);
2761                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
2762                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
2763                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
2764                         } else {
2765                                 /* Request irq for all interrupts */
2766                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, &nv_nic_irq, SA_SHIRQ, dev->name, dev) != 0) {
2767                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
2768                                         pci_disable_msix(np->pci_dev);
2769                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2770                                         goto out_drain;
2771                                 }
2772
2773                                 /* map interrupts to vector 0 */
2774                                 writel(0, base + NvRegMSIXMap0);
2775                                 writel(0, base + NvRegMSIXMap1);
2776                         }
2777                 }
2778         }
2779         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
2780                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
2781                         np->msi_flags |= NV_MSI_ENABLED;
2782                         if (request_irq(np->pci_dev->irq, &nv_nic_irq, SA_SHIRQ, dev->name, dev) != 0) {
2783                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
2784                                 pci_disable_msi(np->pci_dev);
2785                                 np->msi_flags &= ~NV_MSI_ENABLED;
2786                                 goto out_drain;
2787                         }
2788
2789                         /* map interrupts to vector 0 */
2790                         writel(0, base + NvRegMSIMap0);
2791                         writel(0, base + NvRegMSIMap1);
2792                         /* enable msi vector 0 */
2793                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
2794                 }
2795         }
2796         if (ret != 0) {
2797                 if (request_irq(np->pci_dev->irq, &nv_nic_irq, SA_SHIRQ, dev->name, dev) != 0)
2798                         goto out_drain;
2799         }
2800
2801         /* ask for interrupts */
2802         writel(np->irqmask, base + NvRegIrqMask);
2803
2804         spin_lock_irq(&np->lock);
2805         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
2806         writel(0, base + NvRegMulticastAddrB);
2807         writel(0, base + NvRegMulticastMaskA);
2808         writel(0, base + NvRegMulticastMaskB);
2809         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
2810         /* One manual link speed update: Interrupts are enabled, future link
2811          * speed changes cause interrupts and are handled by nv_link_irq().
2812          */
2813         {
2814                 u32 miistat;
2815                 miistat = readl(base + NvRegMIIStatus);
2816                 writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
2817                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
2818         }
2819         /* set linkspeed to invalid value, thus force nv_update_linkspeed
2820          * to init hw */
2821         np->linkspeed = 0;
2822         ret = nv_update_linkspeed(dev);
2823         nv_start_rx(dev);
2824         nv_start_tx(dev);
2825         netif_start_queue(dev);
2826         if (ret) {
2827                 netif_carrier_on(dev);
2828         } else {
2829                 printk("%s: no link during initialization.\n", dev->name);
2830                 netif_carrier_off(dev);
2831         }
2832         if (oom)
2833                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2834         spin_unlock_irq(&np->lock);
2835
2836         return 0;
2837 out_drain:
2838         drain_ring(dev);
2839         return ret;
2840 }
2841
2842 static int nv_close(struct net_device *dev)
2843 {
2844         struct fe_priv *np = netdev_priv(dev);
2845         u8 __iomem *base;
2846         int i;
2847
2848         spin_lock_irq(&np->lock);
2849         np->in_shutdown = 1;
2850         spin_unlock_irq(&np->lock);
2851         synchronize_irq(dev->irq);
2852
2853         del_timer_sync(&np->oom_kick);
2854         del_timer_sync(&np->nic_poll);
2855
2856         netif_stop_queue(dev);
2857         spin_lock_irq(&np->lock);
2858         nv_stop_tx(dev);
2859         nv_stop_rx(dev);
2860         nv_txrx_reset(dev);
2861
2862         /* disable interrupts on the nic or we will lock up */
2863         base = get_hwbase(dev);
2864         if (np->msi_flags & NV_MSI_X_ENABLED) {
2865                 writel(np->irqmask, base + NvRegIrqMask);
2866         } else {
2867                 if (np->msi_flags & NV_MSI_ENABLED)
2868                         writel(0, base + NvRegMSIIrqMask);
2869                 writel(0, base + NvRegIrqMask);
2870         }
2871         pci_push(base);
2872         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
2873
2874         spin_unlock_irq(&np->lock);
2875
2876         if (np->msi_flags & NV_MSI_X_ENABLED) {
2877                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
2878                         free_irq(np->msi_x_entry[i].vector, dev);
2879                 }
2880                 pci_disable_msix(np->pci_dev);
2881                 np->msi_flags &= ~NV_MSI_X_ENABLED;
2882         } else {
2883                 free_irq(np->pci_dev->irq, dev);
2884                 if (np->msi_flags & NV_MSI_ENABLED) {
2885                         pci_disable_msi(np->pci_dev);
2886                         np->msi_flags &= ~NV_MSI_ENABLED;
2887                 }
2888         }
2889
2890         drain_ring(dev);
2891
2892         if (np->wolenabled)
2893                 nv_start_rx(dev);
2894
2895         /* special op: write back the misordered MAC address - otherwise
2896          * the next nv_probe would see a wrong address.
2897          */
2898         writel(np->orig_mac[0], base + NvRegMacAddrA);
2899         writel(np->orig_mac[1], base + NvRegMacAddrB);
2900
2901         /* FIXME: power down nic */
2902
2903         return 0;
2904 }
2905
2906 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
2907 {
2908         struct net_device *dev;
2909         struct fe_priv *np;
2910         unsigned long addr;
2911         u8 __iomem *base;
2912         int err, i;
2913         u32 powerstate;
2914
2915         dev = alloc_etherdev(sizeof(struct fe_priv));
2916         err = -ENOMEM;
2917         if (!dev)
2918                 goto out;
2919
2920         np = netdev_priv(dev);
2921         np->pci_dev = pci_dev;
2922         spin_lock_init(&np->lock);
2923         SET_MODULE_OWNER(dev);
2924         SET_NETDEV_DEV(dev, &pci_dev->dev);
2925
2926         init_timer(&np->oom_kick);
2927         np->oom_kick.data = (unsigned long) dev;
2928         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
2929         init_timer(&np->nic_poll);
2930         np->nic_poll.data = (unsigned long) dev;
2931         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
2932
2933         err = pci_enable_device(pci_dev);
2934         if (err) {
2935                 printk(KERN_INFO "forcedeth: pci_enable_dev failed (%d) for device %s\n",
2936                                 err, pci_name(pci_dev));
2937                 goto out_free;
2938         }
2939
2940         pci_set_master(pci_dev);
2941
2942         err = pci_request_regions(pci_dev, DRV_NAME);
2943         if (err < 0)
2944                 goto out_disable;
2945
2946         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL))
2947                 np->register_size = NV_PCI_REGSZ_VER2;
2948         else
2949                 np->register_size = NV_PCI_REGSZ_VER1;
2950
2951         err = -EINVAL;
2952         addr = 0;
2953         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
2954                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
2955                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
2956                                 pci_resource_len(pci_dev, i),
2957                                 pci_resource_flags(pci_dev, i));
2958                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
2959                                 pci_resource_len(pci_dev, i) >= np->register_size) {
2960                         addr = pci_resource_start(pci_dev, i);
2961                         break;
2962                 }
2963         }
2964         if (i == DEVICE_COUNT_RESOURCE) {
2965                 printk(KERN_INFO "forcedeth: Couldn't find register window for device %s.\n",
2966                                         pci_name(pci_dev));
2967                 goto out_relreg;
2968         }
2969
2970         /* copy of driver data */
2971         np->driver_data = id->driver_data;
2972
2973         /* handle different descriptor versions */
2974         if (id->driver_data & DEV_HAS_HIGH_DMA) {
2975                 /* packet format 3: supports 40-bit addressing */
2976                 np->desc_ver = DESC_VER_3;
2977                 if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
2978                         printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
2979                                         pci_name(pci_dev));
2980                 } else {
2981                         if (pci_set_consistent_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
2982                                 printk(KERN_INFO "forcedeth: 64-bit DMA (consistent) failed for device %s.\n",
2983                                         pci_name(pci_dev));
2984                                 goto out_relreg;
2985                         } else {
2986                                 dev->features |= NETIF_F_HIGHDMA;
2987                                 printk(KERN_INFO "forcedeth: using HIGHDMA\n");
2988                         }
2989                 }
2990                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
2991         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
2992                 /* packet format 2: supports jumbo frames */
2993                 np->desc_ver = DESC_VER_2;
2994                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
2995         } else {
2996                 /* original packet format */
2997                 np->desc_ver = DESC_VER_1;
2998                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
2999         }
3000
3001         np->pkt_limit = NV_PKTLIMIT_1;
3002         if (id->driver_data & DEV_HAS_LARGEDESC)
3003                 np->pkt_limit = NV_PKTLIMIT_2;
3004
3005         if (id->driver_data & DEV_HAS_CHECKSUM) {
3006                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
3007                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
3008 #ifdef NETIF_F_TSO
3009                 dev->features |= NETIF_F_TSO;
3010 #endif
3011         }
3012
3013         np->vlanctl_bits = 0;
3014         if (id->driver_data & DEV_HAS_VLAN) {
3015                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
3016                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
3017                 dev->vlan_rx_register = nv_vlan_rx_register;
3018                 dev->vlan_rx_kill_vid = nv_vlan_rx_kill_vid;
3019         }
3020
3021         np->msi_flags = 0;
3022         if ((id->driver_data & DEV_HAS_MSI) && !disable_msi) {
3023                 np->msi_flags |= NV_MSI_CAPABLE;
3024         }
3025         if ((id->driver_data & DEV_HAS_MSI_X) && !disable_msix) {
3026                 np->msi_flags |= NV_MSI_X_CAPABLE;
3027         }
3028
3029         err = -ENOMEM;
3030         np->base = ioremap(addr, np->register_size);
3031         if (!np->base)
3032                 goto out_relreg;
3033         dev->base_addr = (unsigned long)np->base;
3034
3035         dev->irq = pci_dev->irq;
3036
3037         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3038                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
3039                                         sizeof(struct ring_desc) * (RX_RING + TX_RING),
3040                                         &np->ring_addr);
3041                 if (!np->rx_ring.orig)
3042                         goto out_unmap;
3043                 np->tx_ring.orig = &np->rx_ring.orig[RX_RING];
3044         } else {
3045                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
3046                                         sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
3047                                         &np->ring_addr);
3048                 if (!np->rx_ring.ex)
3049                         goto out_unmap;
3050                 np->tx_ring.ex = &np->rx_ring.ex[RX_RING];
3051         }
3052
3053         dev->open = nv_open;
3054         dev->stop = nv_close;
3055         dev->hard_start_xmit = nv_start_xmit;
3056         dev->get_stats = nv_get_stats;
3057         dev->change_mtu = nv_change_mtu;
3058         dev->set_mac_address = nv_set_mac_address;
3059         dev->set_multicast_list = nv_set_multicast;
3060 #ifdef CONFIG_NET_POLL_CONTROLLER
3061         dev->poll_controller = nv_poll_controller;
3062 #endif
3063         SET_ETHTOOL_OPS(dev, &ops);
3064         dev->tx_timeout = nv_tx_timeout;
3065         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
3066
3067         pci_set_drvdata(pci_dev, dev);
3068
3069         /* read the mac address */
3070         base = get_hwbase(dev);
3071         np->orig_mac[0] = readl(base + NvRegMacAddrA);
3072         np->orig_mac[1] = readl(base + NvRegMacAddrB);
3073
3074         dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
3075         dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
3076         dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
3077         dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
3078         dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
3079         dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
3080         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3081
3082         if (!is_valid_ether_addr(dev->perm_addr)) {
3083                 /*
3084                  * Bad mac address. At least one bios sets the mac address
3085                  * to 01:23:45:67:89:ab
3086                  */
3087                 printk(KERN_ERR "%s: Invalid Mac address detected: %02x:%02x:%02x:%02x:%02x:%02x\n",
3088                         pci_name(pci_dev),
3089                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3090                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3091                 printk(KERN_ERR "Please complain to your hardware vendor. Switching to a random MAC.\n");
3092                 dev->dev_addr[0] = 0x00;
3093                 dev->dev_addr[1] = 0x00;
3094                 dev->dev_addr[2] = 0x6c;
3095                 get_random_bytes(&dev->dev_addr[3], 3);
3096         }
3097
3098         dprintk(KERN_DEBUG "%s: MAC Address %02x:%02x:%02x:%02x:%02x:%02x\n", pci_name(pci_dev),
3099                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3100                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3101
3102         /* disable WOL */
3103         writel(0, base + NvRegWakeUpFlags);
3104         np->wolenabled = 0;
3105
3106         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
3107                 u8 revision_id;
3108                 pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id);
3109
3110                 /* take phy and nic out of low power mode */
3111                 powerstate = readl(base + NvRegPowerState2);
3112                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
3113                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
3114                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
3115                     revision_id >= 0xA3)
3116                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
3117                 writel(powerstate, base + NvRegPowerState2);
3118         }
3119
3120         if (np->desc_ver == DESC_VER_1) {
3121                 np->tx_flags = NV_TX_VALID;
3122         } else {
3123                 np->tx_flags = NV_TX2_VALID;
3124         }
3125         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
3126                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3127                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
3128                         np->msi_flags |= 0x0003;
3129         } else {
3130                 np->irqmask = NVREG_IRQMASK_CPU;
3131                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
3132                         np->msi_flags |= 0x0001;
3133         }
3134
3135         if (id->driver_data & DEV_NEED_TIMERIRQ)
3136                 np->irqmask |= NVREG_IRQ_TIMER;
3137         if (id->driver_data & DEV_NEED_LINKTIMER) {
3138                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
3139                 np->need_linktimer = 1;
3140                 np->link_timeout = jiffies + LINK_TIMEOUT;
3141         } else {
3142                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
3143                 np->need_linktimer = 0;
3144         }
3145
3146         /* find a suitable phy */
3147         for (i = 1; i <= 32; i++) {
3148                 int id1, id2;
3149                 int phyaddr = i & 0x1F;
3150
3151                 spin_lock_irq(&np->lock);
3152                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
3153                 spin_unlock_irq(&np->lock);
3154                 if (id1 < 0 || id1 == 0xffff)
3155                         continue;
3156                 spin_lock_irq(&np->lock);
3157                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
3158                 spin_unlock_irq(&np->lock);
3159                 if (id2 < 0 || id2 == 0xffff)
3160                         continue;
3161
3162                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
3163                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
3164                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
3165                         pci_name(pci_dev), id1, id2, phyaddr);
3166                 np->phyaddr = phyaddr;
3167                 np->phy_oui = id1 | id2;
3168                 break;
3169         }
3170         if (i == 33) {
3171                 printk(KERN_INFO "%s: open: Could not find a valid PHY.\n",
3172                        pci_name(pci_dev));
3173                 goto out_freering;
3174         }
3175
3176         /* reset it */
3177         phy_init(dev);
3178
3179         /* set default link speed settings */
3180         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3181         np->duplex = 0;
3182         np->autoneg = 1;
3183
3184         err = register_netdev(dev);
3185         if (err) {
3186                 printk(KERN_INFO "forcedeth: unable to register netdev: %d\n", err);
3187                 goto out_freering;
3188         }
3189         printk(KERN_INFO "%s: forcedeth.c: subsystem: %05x:%04x bound to %s\n",
3190                         dev->name, pci_dev->subsystem_vendor, pci_dev->subsystem_device,
3191                         pci_name(pci_dev));
3192
3193         return 0;
3194
3195 out_freering:
3196         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
3197                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
3198                                     np->rx_ring.orig, np->ring_addr);
3199         else
3200                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
3201                                     np->rx_ring.ex, np->ring_addr);
3202         pci_set_drvdata(pci_dev, NULL);
3203 out_unmap:
3204         iounmap(get_hwbase(dev));
3205 out_relreg:
3206         pci_release_regions(pci_dev);
3207 out_disable:
3208         pci_disable_device(pci_dev);
3209 out_free:
3210         free_netdev(dev);
3211 out:
3212         return err;
3213 }
3214
3215 static void __devexit nv_remove(struct pci_dev *pci_dev)
3216 {
3217         struct net_device *dev = pci_get_drvdata(pci_dev);
3218         struct fe_priv *np = netdev_priv(dev);
3219
3220         unregister_netdev(dev);
3221
3222         /* free all structures */
3223         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
3224                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring.orig, np->ring_addr);
3225         else
3226                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING), np->rx_ring.ex, np->ring_addr);
3227         iounmap(get_hwbase(dev));
3228         pci_release_regions(pci_dev);
3229         pci_disable_device(pci_dev);
3230         free_netdev(dev);
3231         pci_set_drvdata(pci_dev, NULL);
3232 }
3233
3234 static struct pci_device_id pci_tbl[] = {
3235         {       /* nForce Ethernet Controller */
3236                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
3237                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
3238         },
3239         {       /* nForce2 Ethernet Controller */
3240                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
3241                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
3242         },
3243         {       /* nForce3 Ethernet Controller */
3244                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
3245                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
3246         },
3247         {       /* nForce3 Ethernet Controller */
3248                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
3249                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
3250         },
3251         {       /* nForce3 Ethernet Controller */
3252                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
3253                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
3254         },
3255         {       /* nForce3 Ethernet Controller */
3256                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
3257                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
3258         },
3259         {       /* nForce3 Ethernet Controller */
3260                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
3261                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
3262         },
3263         {       /* CK804 Ethernet Controller */
3264                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
3265                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
3266         },
3267         {       /* CK804 Ethernet Controller */
3268                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
3269                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
3270         },
3271         {       /* MCP04 Ethernet Controller */
3272                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
3273                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
3274         },
3275         {       /* MCP04 Ethernet Controller */
3276                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
3277                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
3278         },
3279         {       /* MCP51 Ethernet Controller */
3280                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
3281                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
3282         },
3283         {       /* MCP51 Ethernet Controller */
3284                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
3285                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
3286         },
3287         {       /* MCP55 Ethernet Controller */
3288                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
3289                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL,
3290         },
3291         {       /* MCP55 Ethernet Controller */
3292                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
3293                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL,
3294         },
3295         {0,},
3296 };
3297
3298 static struct pci_driver driver = {
3299         .name = "forcedeth",
3300         .id_table = pci_tbl,
3301         .probe = nv_probe,
3302         .remove = __devexit_p(nv_remove),
3303 };
3304
3305
3306 static int __init init_nic(void)
3307 {
3308         printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION);
3309         return pci_module_init(&driver);
3310 }
3311
3312 static void __exit exit_nic(void)
3313 {
3314         pci_unregister_driver(&driver);
3315 }
3316
3317 module_param(max_interrupt_work, int, 0);
3318 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
3319 module_param(optimization_mode, int, 0);
3320 MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer.");
3321 module_param(poll_interval, int, 0);
3322 MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
3323 module_param(disable_msi, int, 0);
3324 MODULE_PARM_DESC(disable_msi, "Disable MSI interrupts by setting to 1.");
3325 module_param(disable_msix, int, 0);
3326 MODULE_PARM_DESC(disable_msix, "Disable MSIX interrupts by setting to 1.");
3327
3328 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
3329 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
3330 MODULE_LICENSE("GPL");
3331
3332 MODULE_DEVICE_TABLE(pci, pci_tbl);
3333
3334 module_init(init_nic);
3335 module_exit(exit_nic);