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  *      0.54: 21 Mar 2006: Fix spin locks for multi irqs and cleanup.
 110  *      0.55: 22 Mar 2006: Add flow control (pause frame).
 111  *      0.56: 22 Mar 2006: Additional ethtool config and moduleparam support.
 112  *      0.57: 14 May 2006: Mac address set in probe/remove and order corrections.
 113  *      0.58: 30 Oct 2006: Added support for sideband management unit.
 114  *      0.59: 30 Oct 2006: Added support for recoverable error.
 115  *
 116  * Known bugs:
 117  * We suspect that on some hardware no TX done interrupts are generated.
 118  * This means recovery from netif_stop_queue only happens if the hw timer
 119  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
 120  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
 121  * If your hardware reliably generates tx done interrupts, then you can remove
 122  * DEV_NEED_TIMERIRQ from the driver_data flags.
 123  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
 124  * superfluous timer interrupts from the nic.
 125  */
 126 #ifdef CONFIG_FORCEDETH_NAPI
 127 #define DRIVERNAPI "-NAPI"
 128 #else
 129 #define DRIVERNAPI
 130 #endif
 131 #define FORCEDETH_VERSION               "0.59"
 132 #define DRV_NAME                        "forcedeth"
 133
 134 #include <linux/module.h>
 135 #include <linux/types.h>
 136 #include <linux/pci.h>
 137 #include <linux/interrupt.h>
 138 #include <linux/netdevice.h>
 139 #include <linux/etherdevice.h>
 140 #include <linux/delay.h>
 141 #include <linux/spinlock.h>
 142 #include <linux/ethtool.h>
 143 #include <linux/timer.h>
 144 #include <linux/skbuff.h>
 145 #include <linux/mii.h>
 146 #include <linux/random.h>
 147 #include <linux/init.h>
 148 #include <linux/if_vlan.h>
 149 #include <linux/dma-mapping.h>
 150
 151 #include <asm/irq.h>
 152 #include <asm/io.h>
 153 #include <asm/uaccess.h>
 154 #include <asm/system.h>
 155
 156 #if 0
 157 #define dprintk                 printk
 158 #else
 159 #define dprintk(x...)           do { } while (0)
 160 #endif
 161
 162
 163 /*
 164  * Hardware access:
 165  */
 166
 167 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 168 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 169 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
 170 #define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 171 #define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 172 #define DEV_HAS_VLAN            0x0020  /* device supports vlan tagging and striping */
 173 #define DEV_HAS_MSI             0x0040  /* device supports MSI */
 174 #define DEV_HAS_MSI_X           0x0080  /* device supports MSI-X */
 175 #define DEV_HAS_POWER_CNTRL     0x0100  /* device supports power savings */
 176 #define DEV_HAS_PAUSEFRAME_TX   0x0200  /* device supports tx pause frames */
 177 #define DEV_HAS_STATISTICS      0x0400  /* device supports hw statistics */
 178 #define DEV_HAS_TEST_EXTENDED   0x0800  /* device supports extended diagnostic test */
 179 #define DEV_HAS_MGMT_UNIT       0x1000  /* device supports management unit */
 180
 181 enum {
 182         NvRegIrqStatus = 0x000,
 183 #define NVREG_IRQSTAT_MIIEVENT  0x040
 184 #define NVREG_IRQSTAT_MASK              0x81ff
 185         NvRegIrqMask = 0x004,
 186 #define NVREG_IRQ_RX_ERROR              0x0001
 187 #define NVREG_IRQ_RX                    0x0002
 188 #define NVREG_IRQ_RX_NOBUF              0x0004
 189 #define NVREG_IRQ_TX_ERR                0x0008
 190 #define NVREG_IRQ_TX_OK                 0x0010
 191 #define NVREG_IRQ_TIMER                 0x0020
 192 #define NVREG_IRQ_LINK                  0x0040
 193 #define NVREG_IRQ_RX_FORCED             0x0080
 194 #define NVREG_IRQ_TX_FORCED             0x0100
 195 #define NVREG_IRQ_RECOVER_ERROR         0x8000
 196 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 197 #define NVREG_IRQMASK_CPU               0x0040
 198 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 199 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 200 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 201
 202 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 203                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
 204                                         NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR))
 205
 206         NvRegUnknownSetupReg6 = 0x008,
 207 #define NVREG_UNKSETUP6_VAL             3
 208
 209 /*
 210  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 211  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 212  */
 213         NvRegPollingInterval = 0x00c,
 214 #define NVREG_POLL_DEFAULT_THROUGHPUT   970
 215 #define NVREG_POLL_DEFAULT_CPU  13
 216         NvRegMSIMap0 = 0x020,
 217         NvRegMSIMap1 = 0x024,
 218         NvRegMSIIrqMask = 0x030,
 219 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 220         NvRegMisc1 = 0x080,
 221 #define NVREG_MISC1_PAUSE_TX    0x01
 222 #define NVREG_MISC1_HD          0x02
 223 #define NVREG_MISC1_FORCE       0x3b0f3c
 224
 225         NvRegMacReset = 0x3c,
 226 #define NVREG_MAC_RESET_ASSERT  0x0F3
 227         NvRegTransmitterControl = 0x084,
 228 #define NVREG_XMITCTL_START     0x01
 229 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 230 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 231 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 232 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 233 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 234 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 235 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 236 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 237 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 238         NvRegTransmitterStatus = 0x088,
 239 #define NVREG_XMITSTAT_BUSY     0x01
 240
 241         NvRegPacketFilterFlags = 0x8c,
 242 #define NVREG_PFF_PAUSE_RX      0x08
 243 #define NVREG_PFF_ALWAYS        0x7F0000
 244 #define NVREG_PFF_PROMISC       0x80
 245 #define NVREG_PFF_MYADDR        0x20
 246 #define NVREG_PFF_LOOPBACK      0x10
 247
 248         NvRegOffloadConfig = 0x90,
 249 #define NVREG_OFFLOAD_HOMEPHY   0x601
 250 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 251         NvRegReceiverControl = 0x094,
 252 #define NVREG_RCVCTL_START      0x01
 253         NvRegReceiverStatus = 0x98,
 254 #define NVREG_RCVSTAT_BUSY      0x01
 255
 256         NvRegRandomSeed = 0x9c,
 257 #define NVREG_RNDSEED_MASK      0x00ff
 258 #define NVREG_RNDSEED_FORCE     0x7f00
 259 #define NVREG_RNDSEED_FORCE2    0x2d00
 260 #define NVREG_RNDSEED_FORCE3    0x7400
 261
 262         NvRegTxDeferral = 0xA0,
 263 #define NVREG_TX_DEFERRAL_DEFAULT       0x15050f
 264 #define NVREG_TX_DEFERRAL_RGMII_10_100  0x16070f
 265 #define NVREG_TX_DEFERRAL_RGMII_1000    0x14050f
 266         NvRegRxDeferral = 0xA4,
 267 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 268         NvRegMacAddrA = 0xA8,
 269         NvRegMacAddrB = 0xAC,
 270         NvRegMulticastAddrA = 0xB0,
 271 #define NVREG_MCASTADDRA_FORCE  0x01
 272         NvRegMulticastAddrB = 0xB4,
 273         NvRegMulticastMaskA = 0xB8,
 274         NvRegMulticastMaskB = 0xBC,
 275
 276         NvRegPhyInterface = 0xC0,
 277 #define PHY_RGMII               0x10000000
 278
 279         NvRegTxRingPhysAddr = 0x100,
 280         NvRegRxRingPhysAddr = 0x104,
 281         NvRegRingSizes = 0x108,
 282 #define NVREG_RINGSZ_TXSHIFT 0
 283 #define NVREG_RINGSZ_RXSHIFT 16
 284         NvRegTransmitPoll = 0x10c,
 285 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 286         NvRegLinkSpeed = 0x110,
 287 #define NVREG_LINKSPEED_FORCE 0x10000
 288 #define NVREG_LINKSPEED_10      1000
 289 #define NVREG_LINKSPEED_100     100
 290 #define NVREG_LINKSPEED_1000    50
 291 #define NVREG_LINKSPEED_MASK    (0xFFF)
 292         NvRegUnknownSetupReg5 = 0x130,
 293 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 294         NvRegTxWatermark = 0x13c,
 295 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 296 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 297 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 298         NvRegTxRxControl = 0x144,
 299 #define NVREG_TXRXCTL_KICK      0x0001
 300 #define NVREG_TXRXCTL_BIT1      0x0002
 301 #define NVREG_TXRXCTL_BIT2      0x0004
 302 #define NVREG_TXRXCTL_IDLE      0x0008
 303 #define NVREG_TXRXCTL_RESET     0x0010
 304 #define NVREG_TXRXCTL_RXCHECK   0x0400
 305 #define NVREG_TXRXCTL_DESC_1    0
 306 #define NVREG_TXRXCTL_DESC_2    0x02100
 307 #define NVREG_TXRXCTL_DESC_3    0x02200
 308 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 309 #define NVREG_TXRXCTL_VLANINS   0x00080
 310         NvRegTxRingPhysAddrHigh = 0x148,
 311         NvRegRxRingPhysAddrHigh = 0x14C,
 312         NvRegTxPauseFrame = 0x170,
 313 #define NVREG_TX_PAUSEFRAME_DISABLE     0x1ff0080
 314 #define NVREG_TX_PAUSEFRAME_ENABLE      0x0c00030
 315         NvRegMIIStatus = 0x180,
 316 #define NVREG_MIISTAT_ERROR             0x0001
 317 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 318 #define NVREG_MIISTAT_MASK              0x000f
 319 #define NVREG_MIISTAT_MASK2             0x000f
 320         NvRegMIIMask = 0x184,
 321 #define NVREG_MII_LINKCHANGE            0x0008
 322
 323         NvRegAdapterControl = 0x188,
 324 #define NVREG_ADAPTCTL_START    0x02
 325 #define NVREG_ADAPTCTL_LINKUP   0x04
 326 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 327 #define NVREG_ADAPTCTL_RUNNING  0x100000
 328 #define NVREG_ADAPTCTL_PHYSHIFT 24
 329         NvRegMIISpeed = 0x18c,
 330 #define NVREG_MIISPEED_BIT8     (1<<8)
 331 #define NVREG_MIIDELAY  5
 332         NvRegMIIControl = 0x190,
 333 #define NVREG_MIICTL_INUSE      0x08000
 334 #define NVREG_MIICTL_WRITE      0x00400
 335 #define NVREG_MIICTL_ADDRSHIFT  5
 336         NvRegMIIData = 0x194,
 337         NvRegWakeUpFlags = 0x200,
 338 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 339 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 340 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 341 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 342 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 343 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 344 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 345 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 346 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 347 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 348 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 349
 350         NvRegPatternCRC = 0x204,
 351         NvRegPatternMask = 0x208,
 352         NvRegPowerCap = 0x268,
 353 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 354 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 355 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 356         NvRegPowerState = 0x26c,
 357 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 358 #define NVREG_POWERSTATE_VALID          0x0100
 359 #define NVREG_POWERSTATE_MASK           0x0003
 360 #define NVREG_POWERSTATE_D0             0x0000
 361 #define NVREG_POWERSTATE_D1             0x0001
 362 #define NVREG_POWERSTATE_D2             0x0002
 363 #define NVREG_POWERSTATE_D3             0x0003
 364         NvRegTxCnt = 0x280,
 365         NvRegTxZeroReXmt = 0x284,
 366         NvRegTxOneReXmt = 0x288,
 367         NvRegTxManyReXmt = 0x28c,
 368         NvRegTxLateCol = 0x290,
 369         NvRegTxUnderflow = 0x294,
 370         NvRegTxLossCarrier = 0x298,
 371         NvRegTxExcessDef = 0x29c,
 372         NvRegTxRetryErr = 0x2a0,
 373         NvRegRxFrameErr = 0x2a4,
 374         NvRegRxExtraByte = 0x2a8,
 375         NvRegRxLateCol = 0x2ac,
 376         NvRegRxRunt = 0x2b0,
 377         NvRegRxFrameTooLong = 0x2b4,
 378         NvRegRxOverflow = 0x2b8,
 379         NvRegRxFCSErr = 0x2bc,
 380         NvRegRxFrameAlignErr = 0x2c0,
 381         NvRegRxLenErr = 0x2c4,
 382         NvRegRxUnicast = 0x2c8,
 383         NvRegRxMulticast = 0x2cc,
 384         NvRegRxBroadcast = 0x2d0,
 385         NvRegTxDef = 0x2d4,
 386         NvRegTxFrame = 0x2d8,
 387         NvRegRxCnt = 0x2dc,
 388         NvRegTxPause = 0x2e0,
 389         NvRegRxPause = 0x2e4,
 390         NvRegRxDropFrame = 0x2e8,
 391         NvRegVlanControl = 0x300,
 392 #define NVREG_VLANCONTROL_ENABLE        0x2000
 393         NvRegMSIXMap0 = 0x3e0,
 394         NvRegMSIXMap1 = 0x3e4,
 395         NvRegMSIXIrqStatus = 0x3f0,
 396
 397         NvRegPowerState2 = 0x600,
 398 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
 399 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 400 };
 401
 402 /* Big endian: should work, but is untested */
 403 struct ring_desc {
 404         __le32 buf;
 405         __le32 flaglen;
 406 };
 407
 408 struct ring_desc_ex {
 409         __le32 bufhigh;
 410         __le32 buflow;
 411         __le32 txvlan;
 412         __le32 flaglen;
 413 };
 414
 415 union ring_type {
 416         struct ring_desc* orig;
 417         struct ring_desc_ex* ex;
 418 };
 419
 420 #define FLAG_MASK_V1 0xffff0000
 421 #define FLAG_MASK_V2 0xffffc000
 422 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 423 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 424
 425 #define NV_TX_LASTPACKET        (1<<16)
 426 #define NV_TX_RETRYERROR        (1<<19)
 427 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 428 #define NV_TX_DEFERRED          (1<<26)
 429 #define NV_TX_CARRIERLOST       (1<<27)
 430 #define NV_TX_LATECOLLISION     (1<<28)
 431 #define NV_TX_UNDERFLOW         (1<<29)
 432 #define NV_TX_ERROR             (1<<30)
 433 #define NV_TX_VALID             (1<<31)
 434
 435 #define NV_TX2_LASTPACKET       (1<<29)
 436 #define NV_TX2_RETRYERROR       (1<<18)
 437 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 438 #define NV_TX2_DEFERRED         (1<<25)
 439 #define NV_TX2_CARRIERLOST      (1<<26)
 440 #define NV_TX2_LATECOLLISION    (1<<27)
 441 #define NV_TX2_UNDERFLOW        (1<<28)
 442 /* error and valid are the same for both */
 443 #define NV_TX2_ERROR            (1<<30)
 444 #define NV_TX2_VALID            (1<<31)
 445 #define NV_TX2_TSO              (1<<28)
 446 #define NV_TX2_TSO_SHIFT        14
 447 #define NV_TX2_TSO_MAX_SHIFT    14
 448 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 449 #define NV_TX2_CHECKSUM_L3      (1<<27)
 450 #define NV_TX2_CHECKSUM_L4      (1<<26)
 451
 452 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 453
 454 #define NV_RX_DESCRIPTORVALID   (1<<16)
 455 #define NV_RX_MISSEDFRAME       (1<<17)
 456 #define NV_RX_SUBSTRACT1        (1<<18)
 457 #define NV_RX_ERROR1            (1<<23)
 458 #define NV_RX_ERROR2            (1<<24)
 459 #define NV_RX_ERROR3            (1<<25)
 460 #define NV_RX_ERROR4            (1<<26)
 461 #define NV_RX_CRCERR            (1<<27)
 462 #define NV_RX_OVERFLOW          (1<<28)
 463 #define NV_RX_FRAMINGERR        (1<<29)
 464 #define NV_RX_ERROR             (1<<30)
 465 #define NV_RX_AVAIL             (1<<31)
 466
 467 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 468 #define NV_RX2_CHECKSUMOK1      (0x10000000)
 469 #define NV_RX2_CHECKSUMOK2      (0x14000000)
 470 #define NV_RX2_CHECKSUMOK3      (0x18000000)
 471 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 472 #define NV_RX2_SUBSTRACT1       (1<<25)
 473 #define NV_RX2_ERROR1           (1<<18)
 474 #define NV_RX2_ERROR2           (1<<19)
 475 #define NV_RX2_ERROR3           (1<<20)
 476 #define NV_RX2_ERROR4           (1<<21)
 477 #define NV_RX2_CRCERR           (1<<22)
 478 #define NV_RX2_OVERFLOW         (1<<23)
 479 #define NV_RX2_FRAMINGERR       (1<<24)
 480 /* error and avail are the same for both */
 481 #define NV_RX2_ERROR            (1<<30)
 482 #define NV_RX2_AVAIL            (1<<31)
 483
 484 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 485 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 486
 487 /* Miscelaneous hardware related defines: */
 488 #define NV_PCI_REGSZ_VER1       0x270
 489 #define NV_PCI_REGSZ_VER2       0x604
 490
 491 /* various timeout delays: all in usec */
 492 #define NV_TXRX_RESET_DELAY     4
 493 #define NV_TXSTOP_DELAY1        10
 494 #define NV_TXSTOP_DELAY1MAX     500000
 495 #define NV_TXSTOP_DELAY2        100
 496 #define NV_RXSTOP_DELAY1        10
 497 #define NV_RXSTOP_DELAY1MAX     500000
 498 #define NV_RXSTOP_DELAY2        100
 499 #define NV_SETUP5_DELAY         5
 500 #define NV_SETUP5_DELAYMAX      50000
 501 #define NV_POWERUP_DELAY        5
 502 #define NV_POWERUP_DELAYMAX     5000
 503 #define NV_MIIBUSY_DELAY        50
 504 #define NV_MIIPHY_DELAY 10
 505 #define NV_MIIPHY_DELAYMAX      10000
 506 #define NV_MAC_RESET_DELAY      64
 507
 508 #define NV_WAKEUPPATTERNS       5
 509 #define NV_WAKEUPMASKENTRIES    4
 510
 511 /* General driver defaults */
 512 #define NV_WATCHDOG_TIMEO       (5*HZ)
 513
 514 #define RX_RING_DEFAULT         128
 515 #define TX_RING_DEFAULT         256
 516 #define RX_RING_MIN             128
 517 #define TX_RING_MIN             64
 518 #define RING_MAX_DESC_VER_1     1024
 519 #define RING_MAX_DESC_VER_2_3   16384
 520 /*
 521  * Difference between the get and put pointers for the tx ring.
 522  * This is used to throttle the amount of data outstanding in the
 523  * tx ring.
 524  */
 525 #define TX_LIMIT_DIFFERENCE     1
 526
 527 /* rx/tx mac addr + type + vlan + align + slack*/
 528 #define NV_RX_HEADERS           (64)
 529 /* even more slack. */
 530 #define NV_RX_ALLOC_PAD         (64)
 531
 532 /* maximum mtu size */
 533 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 534 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 535
 536 #define OOM_REFILL      (1+HZ/20)
 537 #define POLL_WAIT       (1+HZ/100)
 538 #define LINK_TIMEOUT    (3*HZ)
 539 #define STATS_INTERVAL  (10*HZ)
 540
 541 /*
 542  * desc_ver values:
 543  * The nic supports three different descriptor types:
 544  * - DESC_VER_1: Original
 545  * - DESC_VER_2: support for jumbo frames.
 546  * - DESC_VER_3: 64-bit format.
 547  */
 548 #define DESC_VER_1      1
 549 #define DESC_VER_2      2
 550 #define DESC_VER_3      3
 551
 552 /* PHY defines */
 553 #define PHY_OUI_MARVELL 0x5043
 554 #define PHY_OUI_CICADA  0x03f1
 555 #define PHYID1_OUI_MASK 0x03ff
 556 #define PHYID1_OUI_SHFT 6
 557 #define PHYID2_OUI_MASK 0xfc00
 558 #define PHYID2_OUI_SHFT 10
 559 #define PHYID2_MODEL_MASK               0x03f0
 560 #define PHY_MODEL_MARVELL_E3016         0x220
 561 #define PHY_MARVELL_E3016_INITMASK      0x0300
 562 #define PHY_INIT1       0x0f000
 563 #define PHY_INIT2       0x0e00
 564 #define PHY_INIT3       0x01000
 565 #define PHY_INIT4       0x0200
 566 #define PHY_INIT5       0x0004
 567 #define PHY_INIT6       0x02000
 568 #define PHY_GIGABIT     0x0100
 569
 570 #define PHY_TIMEOUT     0x1
 571 #define PHY_ERROR       0x2
 572
 573 #define PHY_100 0x1
 574 #define PHY_1000        0x2
 575 #define PHY_HALF        0x100
 576
 577 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 578 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 579 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 580 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 581 #define NV_PAUSEFRAME_RX_REQ     0x0010
 582 #define NV_PAUSEFRAME_TX_REQ     0x0020
 583 #define NV_PAUSEFRAME_AUTONEG    0x0040
 584
 585 /* MSI/MSI-X defines */
 586 #define NV_MSI_X_MAX_VECTORS  8
 587 #define NV_MSI_X_VECTORS_MASK 0x000f
 588 #define NV_MSI_CAPABLE        0x0010
 589 #define NV_MSI_X_CAPABLE      0x0020
 590 #define NV_MSI_ENABLED        0x0040
 591 #define NV_MSI_X_ENABLED      0x0080
 592
 593 #define NV_MSI_X_VECTOR_ALL   0x0
 594 #define NV_MSI_X_VECTOR_RX    0x0
 595 #define NV_MSI_X_VECTOR_TX    0x1
 596 #define NV_MSI_X_VECTOR_OTHER 0x2
 597
 598 /* statistics */
 599 struct nv_ethtool_str {
 600         char name[ETH_GSTRING_LEN];
 601 };
 602
 603 static const struct nv_ethtool_str nv_estats_str[] = {
 604         { "tx_bytes" },
 605         { "tx_zero_rexmt" },
 606         { "tx_one_rexmt" },
 607         { "tx_many_rexmt" },
 608         { "tx_late_collision" },
 609         { "tx_fifo_errors" },
 610         { "tx_carrier_errors" },
 611         { "tx_excess_deferral" },
 612         { "tx_retry_error" },
 613         { "tx_deferral" },
 614         { "tx_packets" },
 615         { "tx_pause" },
 616         { "rx_frame_error" },
 617         { "rx_extra_byte" },
 618         { "rx_late_collision" },
 619         { "rx_runt" },
 620         { "rx_frame_too_long" },
 621         { "rx_over_errors" },
 622         { "rx_crc_errors" },
 623         { "rx_frame_align_error" },
 624         { "rx_length_error" },
 625         { "rx_unicast" },
 626         { "rx_multicast" },
 627         { "rx_broadcast" },
 628         { "rx_bytes" },
 629         { "rx_pause" },
 630         { "rx_drop_frame" },
 631         { "rx_packets" },
 632         { "rx_errors_total" }
 633 };
 634
 635 struct nv_ethtool_stats {
 636         u64 tx_bytes;
 637         u64 tx_zero_rexmt;
 638         u64 tx_one_rexmt;
 639         u64 tx_many_rexmt;
 640         u64 tx_late_collision;
 641         u64 tx_fifo_errors;
 642         u64 tx_carrier_errors;
 643         u64 tx_excess_deferral;
 644         u64 tx_retry_error;
 645         u64 tx_deferral;
 646         u64 tx_packets;
 647         u64 tx_pause;
 648         u64 rx_frame_error;
 649         u64 rx_extra_byte;
 650         u64 rx_late_collision;
 651         u64 rx_runt;
 652         u64 rx_frame_too_long;
 653         u64 rx_over_errors;
 654         u64 rx_crc_errors;
 655         u64 rx_frame_align_error;
 656         u64 rx_length_error;
 657         u64 rx_unicast;
 658         u64 rx_multicast;
 659         u64 rx_broadcast;
 660         u64 rx_bytes;
 661         u64 rx_pause;
 662         u64 rx_drop_frame;
 663         u64 rx_packets;
 664         u64 rx_errors_total;
 665 };
 666
 667 /* diagnostics */
 668 #define NV_TEST_COUNT_BASE 3
 669 #define NV_TEST_COUNT_EXTENDED 4
 670
 671 static const struct nv_ethtool_str nv_etests_str[] = {
 672         { "link      (online/offline)" },
 673         { "register  (offline)       " },
 674         { "interrupt (offline)       " },
 675         { "loopback  (offline)       " }
 676 };
 677
 678 struct register_test {
 679         __le32 reg;
 680         __le32 mask;
 681 };
 682
 683 static const struct register_test nv_registers_test[] = {
 684         { NvRegUnknownSetupReg6, 0x01 },
 685         { NvRegMisc1, 0x03c },
 686         { NvRegOffloadConfig, 0x03ff },
 687         { NvRegMulticastAddrA, 0xffffffff },
 688         { NvRegTxWatermark, 0x0ff },
 689         { NvRegWakeUpFlags, 0x07777 },
 690         { 0,0 }
 691 };
 692
 693 /*
 694  * SMP locking:
 695  * All hardware access under dev->priv->lock, except the performance
 696  * critical parts:
 697  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 698  *      by the arch code for interrupts.
 699  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 700  *      needs dev->priv->lock :-(
 701  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 702  */
 703
 704 /* in dev: base, irq */
 705 struct fe_priv {
 706         spinlock_t lock;
 707
 708         /* General data:
 709          * Locking: spin_lock(&np->lock); */
 710         struct net_device_stats stats;
 711         struct nv_ethtool_stats estats;
 712         int in_shutdown;
 713         u32 linkspeed;
 714         int duplex;
 715         int autoneg;
 716         int fixed_mode;
 717         int phyaddr;
 718         int wolenabled;
 719         unsigned int phy_oui;
 720         unsigned int phy_model;
 721         u16 gigabit;
 722         int intr_test;
 723         int recover_error;
 724
 725         /* General data: RO fields */
 726         dma_addr_t ring_addr;
 727         struct pci_dev *pci_dev;
 728         u32 orig_mac[2];
 729         u32 irqmask;
 730         u32 desc_ver;
 731         u32 txrxctl_bits;
 732         u32 vlanctl_bits;
 733         u32 driver_data;
 734         u32 register_size;
 735         int rx_csum;
 736         u32 mac_in_use;
 737
 738         void __iomem *base;
 739
 740         /* rx specific fields.
 741          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 742          */
 743         union ring_type rx_ring;
 744         unsigned int cur_rx, refill_rx;
 745         struct sk_buff **rx_skbuff;
 746         dma_addr_t *rx_dma;
 747         unsigned int rx_buf_sz;
 748         unsigned int pkt_limit;
 749         struct timer_list oom_kick;
 750         struct timer_list nic_poll;
 751         struct timer_list stats_poll;
 752         u32 nic_poll_irq;
 753         int rx_ring_size;
 754
 755         /* media detection workaround.
 756          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 757          */
 758         int need_linktimer;
 759         unsigned long link_timeout;
 760         /*
 761          * tx specific fields.
 762          */
 763         union ring_type tx_ring;
 764         unsigned int next_tx, nic_tx;
 765         struct sk_buff **tx_skbuff;
 766         dma_addr_t *tx_dma;
 767         unsigned int *tx_dma_len;
 768         u32 tx_flags;
 769         int tx_ring_size;
 770         int tx_limit_start;
 771         int tx_limit_stop;
 772
 773         /* vlan fields */
 774         struct vlan_group *vlangrp;
 775
 776         /* msi/msi-x fields */
 777         u32 msi_flags;
 778         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 779
 780         /* flow control */
 781         u32 pause_flags;
 782 };
 783
 784 /*
 785  * Maximum number of loops until we assume that a bit in the irq mask
 786  * is stuck. Overridable with module param.
 787  */
 788 static int max_interrupt_work = 5;
 789
 790 /*
 791  * Optimization can be either throuput mode or cpu mode
 792  *
 793  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 794  * CPU Mode: Interrupts are controlled by a timer.
 795  */
 796 enum {
 797         NV_OPTIMIZATION_MODE_THROUGHPUT,
 798         NV_OPTIMIZATION_MODE_CPU
 799 };
 800 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 801
 802 /*
 803  * Poll interval for timer irq
 804  *
 805  * This interval determines how frequent an interrupt is generated.
 806  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 807  * Min = 0, and Max = 65535
 808  */
 809 static int poll_interval = -1;
 810
 811 /*
 812  * MSI interrupts
 813  */
 814 enum {
 815         NV_MSI_INT_DISABLED,
 816         NV_MSI_INT_ENABLED
 817 };
 818 static int msi = NV_MSI_INT_ENABLED;
 819
 820 /*
 821  * MSIX interrupts
 822  */
 823 enum {
 824         NV_MSIX_INT_DISABLED,
 825         NV_MSIX_INT_ENABLED
 826 };
 827 static int msix = NV_MSIX_INT_ENABLED;
 828
 829 /*
 830  * DMA 64bit
 831  */
 832 enum {
 833         NV_DMA_64BIT_DISABLED,
 834         NV_DMA_64BIT_ENABLED
 835 };
 836 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 837
 838 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 839 {
 840         return netdev_priv(dev);
 841 }
 842
 843 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 844 {
 845         return ((struct fe_priv *)netdev_priv(dev))->base;
 846 }
 847
 848 static inline void pci_push(u8 __iomem *base)
 849 {
 850         /* force out pending posted writes */
 851         readl(base);
 852 }
 853
 854 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 855 {
 856         return le32_to_cpu(prd->flaglen)
 857                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 858 }
 859
 860 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 861 {
 862         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 863 }
 864
 865 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 866                                 int delay, int delaymax, const char *msg)
 867 {
 868         u8 __iomem *base = get_hwbase(dev);
 869
 870         pci_push(base);
 871         do {
 872                 udelay(delay);
 873                 delaymax -= delay;
 874                 if (delaymax < 0) {
 875                         if (msg)
 876                                 printk(msg);
 877                         return 1;
 878                 }
 879         } while ((readl(base + offset) & mask) != target);
 880         return 0;
 881 }
 882
 883 #define NV_SETUP_RX_RING 0x01
 884 #define NV_SETUP_TX_RING 0x02
 885
 886 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
 887 {
 888         struct fe_priv *np = get_nvpriv(dev);
 889         u8 __iomem *base = get_hwbase(dev);
 890
 891         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 892                 if (rxtx_flags & NV_SETUP_RX_RING) {
 893                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 894                 }
 895                 if (rxtx_flags & NV_SETUP_TX_RING) {
 896                         writel((u32) cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
 897                 }
 898         } else {
 899                 if (rxtx_flags & NV_SETUP_RX_RING) {
 900                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 901                         writel((u32) (cpu_to_le64(np->ring_addr) >> 32), base + NvRegRxRingPhysAddrHigh);
 902                 }
 903                 if (rxtx_flags & NV_SETUP_TX_RING) {
 904                         writel((u32) cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
 905                         writel((u32) (cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)) >> 32), base + NvRegTxRingPhysAddrHigh);
 906                 }
 907         }
 908 }
 909
 910 static void free_rings(struct net_device *dev)
 911 {
 912         struct fe_priv *np = get_nvpriv(dev);
 913
 914         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 915                 if (np->rx_ring.orig)
 916                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
 917                                             np->rx_ring.orig, np->ring_addr);
 918         } else {
 919                 if (np->rx_ring.ex)
 920                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
 921                                             np->rx_ring.ex, np->ring_addr);
 922         }
 923         if (np->rx_skbuff)
 924                 kfree(np->rx_skbuff);
 925         if (np->rx_dma)
 926                 kfree(np->rx_dma);
 927         if (np->tx_skbuff)
 928                 kfree(np->tx_skbuff);
 929         if (np->tx_dma)
 930                 kfree(np->tx_dma);
 931         if (np->tx_dma_len)
 932                 kfree(np->tx_dma_len);
 933 }
 934
 935 static int using_multi_irqs(struct net_device *dev)
 936 {
 937         struct fe_priv *np = get_nvpriv(dev);
 938
 939         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
 940             ((np->msi_flags & NV_MSI_X_ENABLED) &&
 941              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
 942                 return 0;
 943         else
 944                 return 1;
 945 }
 946
 947 static void nv_enable_irq(struct net_device *dev)
 948 {
 949         struct fe_priv *np = get_nvpriv(dev);
 950
 951         if (!using_multi_irqs(dev)) {
 952                 if (np->msi_flags & NV_MSI_X_ENABLED)
 953                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
 954                 else
 955                         enable_irq(dev->irq);
 956         } else {
 957                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 958                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 959                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 960         }
 961 }
 962
 963 static void nv_disable_irq(struct net_device *dev)
 964 {
 965         struct fe_priv *np = get_nvpriv(dev);
 966
 967         if (!using_multi_irqs(dev)) {
 968                 if (np->msi_flags & NV_MSI_X_ENABLED)
 969                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
 970                 else
 971                         disable_irq(dev->irq);
 972         } else {
 973                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 974                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 975                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 976         }
 977 }
 978
 979 /* In MSIX mode, a write to irqmask behaves as XOR */
 980 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
 981 {
 982         u8 __iomem *base = get_hwbase(dev);
 983
 984         writel(mask, base + NvRegIrqMask);
 985 }
 986
 987 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
 988 {
 989         struct fe_priv *np = get_nvpriv(dev);
 990         u8 __iomem *base = get_hwbase(dev);
 991
 992         if (np->msi_flags & NV_MSI_X_ENABLED) {
 993                 writel(mask, base + NvRegIrqMask);
 994         } else {
 995                 if (np->msi_flags & NV_MSI_ENABLED)
 996                         writel(0, base + NvRegMSIIrqMask);
 997                 writel(0, base + NvRegIrqMask);
 998         }
 999 }
1000
1001 #define MII_READ        (-1)
1002 /* mii_rw: read/write a register on the PHY.
1003  *
1004  * Caller must guarantee serialization
1005  */
1006 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1007 {
1008         u8 __iomem *base = get_hwbase(dev);
1009         u32 reg;
1010         int retval;
1011
1012         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
1013
1014         reg = readl(base + NvRegMIIControl);
1015         if (reg & NVREG_MIICTL_INUSE) {
1016                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1017                 udelay(NV_MIIBUSY_DELAY);
1018         }
1019
1020         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1021         if (value != MII_READ) {
1022                 writel(value, base + NvRegMIIData);
1023                 reg |= NVREG_MIICTL_WRITE;
1024         }
1025         writel(reg, base + NvRegMIIControl);
1026
1027         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1028                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
1029                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
1030                                 dev->name, miireg, addr);
1031                 retval = -1;
1032         } else if (value != MII_READ) {
1033                 /* it was a write operation - fewer failures are detectable */
1034                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
1035                                 dev->name, value, miireg, addr);
1036                 retval = 0;
1037         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1038                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
1039                                 dev->name, miireg, addr);
1040                 retval = -1;
1041         } else {
1042                 retval = readl(base + NvRegMIIData);
1043                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
1044                                 dev->name, miireg, addr, retval);
1045         }
1046
1047         return retval;
1048 }
1049
1050 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1051 {
1052         struct fe_priv *np = netdev_priv(dev);
1053         u32 miicontrol;
1054         unsigned int tries = 0;
1055
1056         miicontrol = BMCR_RESET | bmcr_setup;
1057         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
1058                 return -1;
1059         }
1060
1061         /* wait for 500ms */
1062         msleep(500);
1063
1064         /* must wait till reset is deasserted */
1065         while (miicontrol & BMCR_RESET) {
1066                 msleep(10);
1067                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1068                 /* FIXME: 100 tries seem excessive */
1069                 if (tries++ > 100)
1070                         return -1;
1071         }
1072         return 0;
1073 }
1074
1075 static int phy_init(struct net_device *dev)
1076 {
1077         struct fe_priv *np = get_nvpriv(dev);
1078         u8 __iomem *base = get_hwbase(dev);
1079         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
1080
1081         /* phy errata for E3016 phy */
1082         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1083                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1084                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1085                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1086                         printk(KERN_INFO "%s: phy write to errata reg failed.\n", pci_name(np->pci_dev));
1087                         return PHY_ERROR;
1088                 }
1089         }
1090
1091         /* set advertise register */
1092         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1093         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|ADVERTISE_PAUSE_ASYM|ADVERTISE_PAUSE_CAP);
1094         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1095                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
1096                 return PHY_ERROR;
1097         }
1098
1099         /* get phy interface type */
1100         phyinterface = readl(base + NvRegPhyInterface);
1101
1102         /* see if gigabit phy */
1103         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1104         if (mii_status & PHY_GIGABIT) {
1105                 np->gigabit = PHY_GIGABIT;
1106                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
1107                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1108                 if (phyinterface & PHY_RGMII)
1109                         mii_control_1000 |= ADVERTISE_1000FULL;
1110                 else
1111                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1112
1113                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1114                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1115                         return PHY_ERROR;
1116                 }
1117         }
1118         else
1119                 np->gigabit = 0;
1120
1121         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1122         mii_control |= BMCR_ANENABLE;
1123
1124         /* reset the phy
1125          * (certain phys need bmcr to be setup with reset)
1126          */
1127         if (phy_reset(dev, mii_control)) {
1128                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
1129                 return PHY_ERROR;
1130         }
1131
1132         /* phy vendor specific configuration */
1133         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
1134                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1135                 phy_reserved &= ~(PHY_INIT1 | PHY_INIT2);
1136                 phy_reserved |= (PHY_INIT3 | PHY_INIT4);
1137                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
1138                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1139                         return PHY_ERROR;
1140                 }
1141                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1142                 phy_reserved |= PHY_INIT5;
1143                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
1144                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1145                         return PHY_ERROR;
1146                 }
1147         }
1148         if (np->phy_oui == PHY_OUI_CICADA) {
1149                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1150                 phy_reserved |= PHY_INIT6;
1151                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
1152                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1153                         return PHY_ERROR;
1154                 }
1155         }
1156         /* some phys clear out pause advertisment on reset, set it back */
1157         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1158
1159         /* restart auto negotiation */
1160         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1161         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1162         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1163                 return PHY_ERROR;
1164         }
1165
1166         return 0;
1167 }
1168
1169 static void nv_start_rx(struct net_device *dev)
1170 {
1171         struct fe_priv *np = netdev_priv(dev);
1172         u8 __iomem *base = get_hwbase(dev);
1173
1174         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
1175         /* Already running? Stop it. */
1176         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
1177                 writel(0, base + NvRegReceiverControl);
1178                 pci_push(base);
1179         }
1180         writel(np->linkspeed, base + NvRegLinkSpeed);
1181         pci_push(base);
1182         writel(NVREG_RCVCTL_START, base + NvRegReceiverControl);
1183         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
1184                                 dev->name, np->duplex, np->linkspeed);
1185         pci_push(base);
1186 }
1187
1188 static void nv_stop_rx(struct net_device *dev)
1189 {
1190         u8 __iomem *base = get_hwbase(dev);
1191
1192         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
1193         writel(0, base + NvRegReceiverControl);
1194         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1195                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
1196                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
1197
1198         udelay(NV_RXSTOP_DELAY2);
1199         writel(0, base + NvRegLinkSpeed);
1200 }
1201
1202 static void nv_start_tx(struct net_device *dev)
1203 {
1204         u8 __iomem *base = get_hwbase(dev);
1205
1206         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
1207         writel(NVREG_XMITCTL_START, base + NvRegTransmitterControl);
1208         pci_push(base);
1209 }
1210
1211 static void nv_stop_tx(struct net_device *dev)
1212 {
1213         u8 __iomem *base = get_hwbase(dev);
1214
1215         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
1216         writel(0, base + NvRegTransmitterControl);
1217         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1218                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
1219                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
1220
1221         udelay(NV_TXSTOP_DELAY2);
1222         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
1223 }
1224
1225 static void nv_txrx_reset(struct net_device *dev)
1226 {
1227         struct fe_priv *np = netdev_priv(dev);
1228         u8 __iomem *base = get_hwbase(dev);
1229
1230         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
1231         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1232         pci_push(base);
1233         udelay(NV_TXRX_RESET_DELAY);
1234         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1235         pci_push(base);
1236 }
1237
1238 static void nv_mac_reset(struct net_device *dev)
1239 {
1240         struct fe_priv *np = netdev_priv(dev);
1241         u8 __iomem *base = get_hwbase(dev);
1242
1243         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
1244         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1245         pci_push(base);
1246         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1247         pci_push(base);
1248         udelay(NV_MAC_RESET_DELAY);
1249         writel(0, base + NvRegMacReset);
1250         pci_push(base);
1251         udelay(NV_MAC_RESET_DELAY);
1252         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1253         pci_push(base);
1254 }
1255
1256 /*
1257  * nv_get_stats: dev->get_stats function
1258  * Get latest stats value from the nic.
1259  * Called with read_lock(&dev_base_lock) held for read -
1260  * only synchronized against unregister_netdevice.
1261  */
1262 static struct net_device_stats *nv_get_stats(struct net_device *dev)
1263 {
1264         struct fe_priv *np = netdev_priv(dev);
1265
1266         /* It seems that the nic always generates interrupts and doesn't
1267          * accumulate errors internally. Thus the current values in np->stats
1268          * are already up to date.
1269          */
1270         return &np->stats;
1271 }
1272
1273 /*
1274  * nv_alloc_rx: fill rx ring entries.
1275  * Return 1 if the allocations for the skbs failed and the
1276  * rx engine is without Available descriptors
1277  */
1278 static int nv_alloc_rx(struct net_device *dev)
1279 {
1280         struct fe_priv *np = netdev_priv(dev);
1281         unsigned int refill_rx = np->refill_rx;
1282         int nr;
1283
1284         while (np->cur_rx != refill_rx) {
1285                 struct sk_buff *skb;
1286
1287                 nr = refill_rx % np->rx_ring_size;
1288                 if (np->rx_skbuff[nr] == NULL) {
1289
1290                         skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1291                         if (!skb)
1292                                 break;
1293
1294                         skb->dev = dev;
1295                         np->rx_skbuff[nr] = skb;
1296                 } else {
1297                         skb = np->rx_skbuff[nr];
1298                 }
1299                 np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data,
1300                                         skb->end-skb->data, PCI_DMA_FROMDEVICE);
1301                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1302                         np->rx_ring.orig[nr].buf = cpu_to_le32(np->rx_dma[nr]);
1303                         wmb();
1304                         np->rx_ring.orig[nr].flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1305                 } else {
1306                         np->rx_ring.ex[nr].bufhigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
1307                         np->rx_ring.ex[nr].buflow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
1308                         wmb();
1309                         np->rx_ring.ex[nr].flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1310                 }
1311                 dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
1312                                         dev->name, refill_rx);
1313                 refill_rx++;
1314         }
1315         np->refill_rx = refill_rx;
1316         if (np->cur_rx - refill_rx == np->rx_ring_size)
1317                 return 1;
1318         return 0;
1319 }
1320
1321 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1322 #ifdef CONFIG_FORCEDETH_NAPI
1323 static void nv_do_rx_refill(unsigned long data)
1324 {
1325         struct net_device *dev = (struct net_device *) data;
1326
1327         /* Just reschedule NAPI rx processing */
1328         netif_rx_schedule(dev);
1329 }
1330 #else
1331 static void nv_do_rx_refill(unsigned long data)
1332 {
1333         struct net_device *dev = (struct net_device *) data;
1334         struct fe_priv *np = netdev_priv(dev);
1335
1336         if (!using_multi_irqs(dev)) {
1337                 if (np->msi_flags & NV_MSI_X_ENABLED)
1338                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1339                 else
1340                         disable_irq(dev->irq);
1341         } else {
1342                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1343         }
1344         if (nv_alloc_rx(dev)) {
1345                 spin_lock_irq(&np->lock);
1346                 if (!np->in_shutdown)
1347                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1348                 spin_unlock_irq(&np->lock);
1349         }
1350         if (!using_multi_irqs(dev)) {
1351                 if (np->msi_flags & NV_MSI_X_ENABLED)
1352                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1353                 else
1354                         enable_irq(dev->irq);
1355         } else {
1356                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1357         }
1358 }
1359 #endif
1360
1361 static void nv_init_rx(struct net_device *dev)
1362 {
1363         struct fe_priv *np = netdev_priv(dev);
1364         int i;
1365
1366         np->cur_rx = np->rx_ring_size;
1367         np->refill_rx = 0;
1368         for (i = 0; i < np->rx_ring_size; i++)
1369                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1370                         np->rx_ring.orig[i].flaglen = 0;
1371                 else
1372                         np->rx_ring.ex[i].flaglen = 0;
1373 }
1374
1375 static void nv_init_tx(struct net_device *dev)
1376 {
1377         struct fe_priv *np = netdev_priv(dev);
1378         int i;
1379
1380         np->next_tx = np->nic_tx = 0;
1381         for (i = 0; i < np->tx_ring_size; i++) {
1382                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1383                         np->tx_ring.orig[i].flaglen = 0;
1384                 else
1385                         np->tx_ring.ex[i].flaglen = 0;
1386                 np->tx_skbuff[i] = NULL;
1387                 np->tx_dma[i] = 0;
1388         }
1389 }
1390
1391 static int nv_init_ring(struct net_device *dev)
1392 {
1393         nv_init_tx(dev);
1394         nv_init_rx(dev);
1395         return nv_alloc_rx(dev);
1396 }
1397
1398 static int nv_release_txskb(struct net_device *dev, unsigned int skbnr)
1399 {
1400         struct fe_priv *np = netdev_priv(dev);
1401
1402         dprintk(KERN_INFO "%s: nv_release_txskb for skbnr %d\n",
1403                 dev->name, skbnr);
1404
1405         if (np->tx_dma[skbnr]) {
1406                 pci_unmap_page(np->pci_dev, np->tx_dma[skbnr],
1407                                np->tx_dma_len[skbnr],
1408                                PCI_DMA_TODEVICE);
1409                 np->tx_dma[skbnr] = 0;
1410         }
1411
1412         if (np->tx_skbuff[skbnr]) {
1413                 dev_kfree_skb_any(np->tx_skbuff[skbnr]);
1414                 np->tx_skbuff[skbnr] = NULL;
1415                 return 1;
1416         } else {
1417                 return 0;
1418         }
1419 }
1420
1421 static void nv_drain_tx(struct net_device *dev)
1422 {
1423         struct fe_priv *np = netdev_priv(dev);
1424         unsigned int i;
1425
1426         for (i = 0; i < np->tx_ring_size; i++) {
1427                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1428                         np->tx_ring.orig[i].flaglen = 0;
1429                 else
1430                         np->tx_ring.ex[i].flaglen = 0;
1431                 if (nv_release_txskb(dev, i))
1432                         np->stats.tx_dropped++;
1433         }
1434 }
1435
1436 static void nv_drain_rx(struct net_device *dev)
1437 {
1438         struct fe_priv *np = netdev_priv(dev);
1439         int i;
1440         for (i = 0; i < np->rx_ring_size; i++) {
1441                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1442                         np->rx_ring.orig[i].flaglen = 0;
1443                 else
1444                         np->rx_ring.ex[i].flaglen = 0;
1445                 wmb();
1446                 if (np->rx_skbuff[i]) {
1447                         pci_unmap_single(np->pci_dev, np->rx_dma[i],
1448                                                 np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
1449                                                 PCI_DMA_FROMDEVICE);
1450                         dev_kfree_skb(np->rx_skbuff[i]);
1451                         np->rx_skbuff[i] = NULL;
1452                 }
1453         }
1454 }
1455
1456 static void drain_ring(struct net_device *dev)
1457 {
1458         nv_drain_tx(dev);
1459         nv_drain_rx(dev);
1460 }
1461
1462 /*
1463  * nv_start_xmit: dev->hard_start_xmit function
1464  * Called with netif_tx_lock held.
1465  */
1466 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1467 {
1468         struct fe_priv *np = netdev_priv(dev);
1469         u32 tx_flags = 0;
1470         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
1471         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1472         unsigned int nr = (np->next_tx - 1) % np->tx_ring_size;
1473         unsigned int start_nr = np->next_tx % np->tx_ring_size;
1474         unsigned int i;
1475         u32 offset = 0;
1476         u32 bcnt;
1477         u32 size = skb->len-skb->data_len;
1478         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1479         u32 tx_flags_vlan = 0;
1480
1481         /* add fragments to entries count */
1482         for (i = 0; i < fragments; i++) {
1483                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1484                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1485         }
1486
1487         spin_lock_irq(&np->lock);
1488
1489         if ((np->next_tx - np->nic_tx + entries - 1) > np->tx_limit_stop) {
1490                 spin_unlock_irq(&np->lock);
1491                 netif_stop_queue(dev);
1492                 return NETDEV_TX_BUSY;
1493         }
1494
1495         /* setup the header buffer */
1496         do {
1497                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1498                 nr = (nr + 1) % np->tx_ring_size;
1499
1500                 np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1501                                                 PCI_DMA_TODEVICE);
1502                 np->tx_dma_len[nr] = bcnt;
1503
1504                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1505                         np->tx_ring.orig[nr].buf = cpu_to_le32(np->tx_dma[nr]);
1506                         np->tx_ring.orig[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1507                 } else {
1508                         np->tx_ring.ex[nr].bufhigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
1509                         np->tx_ring.ex[nr].buflow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
1510                         np->tx_ring.ex[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1511                 }
1512                 tx_flags = np->tx_flags;
1513                 offset += bcnt;
1514                 size -= bcnt;
1515         } while (size);
1516
1517         /* setup the fragments */
1518         for (i = 0; i < fragments; i++) {
1519                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1520                 u32 size = frag->size;
1521                 offset = 0;
1522
1523                 do {
1524                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1525                         nr = (nr + 1) % np->tx_ring_size;
1526
1527                         np->tx_dma[nr] = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1528                                                       PCI_DMA_TODEVICE);
1529                         np->tx_dma_len[nr] = bcnt;
1530
1531                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1532                                 np->tx_ring.orig[nr].buf = cpu_to_le32(np->tx_dma[nr]);
1533                                 np->tx_ring.orig[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1534                         } else {
1535                                 np->tx_ring.ex[nr].bufhigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
1536                                 np->tx_ring.ex[nr].buflow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
1537                                 np->tx_ring.ex[nr].flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1538                         }
1539                         offset += bcnt;
1540                         size -= bcnt;
1541                 } while (size);
1542         }
1543
1544         /* set last fragment flag  */
1545         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1546                 np->tx_ring.orig[nr].flaglen |= cpu_to_le32(tx_flags_extra);
1547         } else {
1548                 np->tx_ring.ex[nr].flaglen |= cpu_to_le32(tx_flags_extra);
1549         }
1550
1551         np->tx_skbuff[nr] = skb;
1552
1553 #ifdef NETIF_F_TSO
1554         if (skb_is_gso(skb))
1555                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
1556         else
1557 #endif
1558         tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
1559                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
1560
1561         /* vlan tag */
1562         if (np->vlangrp && vlan_tx_tag_present(skb)) {
1563                 tx_flags_vlan = NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb);
1564         }
1565
1566         /* set tx flags */
1567         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1568                 np->tx_ring.orig[start_nr].flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
1569         } else {
1570                 np->tx_ring.ex[start_nr].txvlan = cpu_to_le32(tx_flags_vlan);
1571                 np->tx_ring.ex[start_nr].flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
1572         }
1573
1574         dprintk(KERN_DEBUG "%s: nv_start_xmit: packet %d (entries %d) queued for transmission. tx_flags_extra: %x\n",
1575                 dev->name, np->next_tx, entries, tx_flags_extra);
1576         {
1577                 int j;
1578                 for (j=0; j<64; j++) {
1579                         if ((j%16) == 0)
1580                                 dprintk("\n%03x:", j);
1581                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
1582                 }
1583                 dprintk("\n");
1584         }
1585
1586         np->next_tx += entries;
1587
1588         dev->trans_start = jiffies;
1589         spin_unlock_irq(&np->lock);
1590         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1591         pci_push(get_hwbase(dev));
1592         return NETDEV_TX_OK;
1593 }
1594
1595 /*
1596  * nv_tx_done: check for completed packets, release the skbs.
1597  *
1598  * Caller must own np->lock.
1599  */
1600 static void nv_tx_done(struct net_device *dev)
1601 {
1602         struct fe_priv *np = netdev_priv(dev);
1603         u32 flags;
1604         unsigned int i;
1605         struct sk_buff *skb;
1606
1607         while (np->nic_tx != np->next_tx) {
1608                 i = np->nic_tx % np->tx_ring_size;
1609
1610                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1611                         flags = le32_to_cpu(np->tx_ring.orig[i].flaglen);
1612                 else
1613                         flags = le32_to_cpu(np->tx_ring.ex[i].flaglen);
1614
1615                 dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, flags 0x%x.\n",
1616                                         dev->name, np->nic_tx, flags);
1617                 if (flags & NV_TX_VALID)
1618                         break;
1619                 if (np->desc_ver == DESC_VER_1) {
1620                         if (flags & NV_TX_LASTPACKET) {
1621                                 skb = np->tx_skbuff[i];
1622                                 if (flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
1623                                              NV_TX_UNDERFLOW|NV_TX_ERROR)) {
1624                                         if (flags & NV_TX_UNDERFLOW)
1625                                                 np->stats.tx_fifo_errors++;
1626                                         if (flags & NV_TX_CARRIERLOST)
1627                                                 np->stats.tx_carrier_errors++;
1628                                         np->stats.tx_errors++;
1629                                 } else {
1630                                         np->stats.tx_packets++;
1631                                         np->stats.tx_bytes += skb->len;
1632                                 }
1633                         }
1634                 } else {
1635                         if (flags & NV_TX2_LASTPACKET) {
1636                                 skb = np->tx_skbuff[i];
1637                                 if (flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
1638                                              NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
1639                                         if (flags & NV_TX2_UNDERFLOW)
1640                                                 np->stats.tx_fifo_errors++;
1641                                         if (flags & NV_TX2_CARRIERLOST)
1642                                                 np->stats.tx_carrier_errors++;
1643                                         np->stats.tx_errors++;
1644                                 } else {
1645                                         np->stats.tx_packets++;
1646                                         np->stats.tx_bytes += skb->len;
1647                                 }
1648                         }
1649                 }
1650                 nv_release_txskb(dev, i);
1651                 np->nic_tx++;
1652         }
1653         if (np->next_tx - np->nic_tx < np->tx_limit_start)
1654                 netif_wake_queue(dev);
1655 }
1656
1657 /*
1658  * nv_tx_timeout: dev->tx_timeout function
1659  * Called with netif_tx_lock held.
1660  */
1661 static void nv_tx_timeout(struct net_device *dev)
1662 {
1663         struct fe_priv *np = netdev_priv(dev);
1664         u8 __iomem *base = get_hwbase(dev);
1665         u32 status;
1666
1667         if (np->msi_flags & NV_MSI_X_ENABLED)
1668                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
1669         else
1670                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
1671
1672         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
1673
1674         {
1675                 int i;
1676
1677                 printk(KERN_INFO "%s: Ring at %lx: next %d nic %d\n",
1678                                 dev->name, (unsigned long)np->ring_addr,
1679                                 np->next_tx, np->nic_tx);
1680                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
1681                 for (i=0;i<=np->register_size;i+= 32) {
1682                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
1683                                         i,
1684                                         readl(base + i + 0), readl(base + i + 4),
1685                                         readl(base + i + 8), readl(base + i + 12),
1686                                         readl(base + i + 16), readl(base + i + 20),
1687                                         readl(base + i + 24), readl(base + i + 28));
1688                 }
1689                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
1690                 for (i=0;i<np->tx_ring_size;i+= 4) {
1691                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1692                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
1693                                        i,
1694                                        le32_to_cpu(np->tx_ring.orig[i].buf),
1695                                        le32_to_cpu(np->tx_ring.orig[i].flaglen),
1696                                        le32_to_cpu(np->tx_ring.orig[i+1].buf),
1697                                        le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
1698                                        le32_to_cpu(np->tx_ring.orig[i+2].buf),
1699                                        le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
1700                                        le32_to_cpu(np->tx_ring.orig[i+3].buf),
1701                                        le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
1702                         } else {
1703                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
1704                                        i,
1705                                        le32_to_cpu(np->tx_ring.ex[i].bufhigh),
1706                                        le32_to_cpu(np->tx_ring.ex[i].buflow),
1707                                        le32_to_cpu(np->tx_ring.ex[i].flaglen),
1708                                        le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
1709                                        le32_to_cpu(np->tx_ring.ex[i+1].buflow),
1710                                        le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
1711                                        le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
1712                                        le32_to_cpu(np->tx_ring.ex[i+2].buflow),
1713                                        le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
1714                                        le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
1715                                        le32_to_cpu(np->tx_ring.ex[i+3].buflow),
1716                                        le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
1717                         }
1718                 }
1719         }
1720
1721         spin_lock_irq(&np->lock);
1722
1723         /* 1) stop tx engine */
1724         nv_stop_tx(dev);
1725
1726         /* 2) check that the packets were not sent already: */
1727         nv_tx_done(dev);
1728
1729         /* 3) if there are dead entries: clear everything */
1730         if (np->next_tx != np->nic_tx) {
1731                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
1732                 nv_drain_tx(dev);
1733                 np->next_tx = np->nic_tx = 0;
1734                 setup_hw_rings(dev, NV_SETUP_TX_RING);
1735                 netif_wake_queue(dev);
1736         }
1737
1738         /* 4) restart tx engine */
1739         nv_start_tx(dev);
1740         spin_unlock_irq(&np->lock);
1741 }
1742
1743 /*
1744  * Called when the nic notices a mismatch between the actual data len on the
1745  * wire and the len indicated in the 802 header
1746  */
1747 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
1748 {
1749         int hdrlen;     /* length of the 802 header */
1750         int protolen;   /* length as stored in the proto field */
1751
1752         /* 1) calculate len according to header */
1753         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
1754                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
1755                 hdrlen = VLAN_HLEN;
1756         } else {
1757                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
1758                 hdrlen = ETH_HLEN;
1759         }
1760         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
1761                                 dev->name, datalen, protolen, hdrlen);
1762         if (protolen > ETH_DATA_LEN)
1763                 return datalen; /* Value in proto field not a len, no checks possible */
1764
1765         protolen += hdrlen;
1766         /* consistency checks: */
1767         if (datalen > ETH_ZLEN) {
1768                 if (datalen >= protolen) {
1769                         /* more data on wire than in 802 header, trim of
1770                          * additional data.
1771                          */
1772                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1773                                         dev->name, protolen);
1774                         return protolen;
1775                 } else {
1776                         /* less data on wire than mentioned in header.
1777                          * Discard the packet.
1778                          */
1779                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
1780                                         dev->name);
1781                         return -1;
1782                 }
1783         } else {
1784                 /* short packet. Accept only if 802 values are also short */
1785                 if (protolen > ETH_ZLEN) {
1786                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
1787                                         dev->name);
1788                         return -1;
1789                 }
1790                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
1791                                 dev->name, datalen);
1792                 return datalen;
1793         }
1794 }
1795
1796 static int nv_rx_process(struct net_device *dev, int limit)
1797 {
1798         struct fe_priv *np = netdev_priv(dev);
1799         u32 flags;
1800         u32 vlanflags = 0;
1801         int count;
1802
1803         for (count = 0; count < limit; ++count) {
1804                 struct sk_buff *skb;
1805                 int len;
1806                 int i;
1807                 if (np->cur_rx - np->refill_rx >= np->rx_ring_size)
1808                         break;  /* we scanned the whole ring - do not continue */
1809
1810                 i = np->cur_rx % np->rx_ring_size;
1811                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1812                         flags = le32_to_cpu(np->rx_ring.orig[i].flaglen);
1813                         len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
1814                 } else {
1815                         flags = le32_to_cpu(np->rx_ring.ex[i].flaglen);
1816                         len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
1817                         vlanflags = le32_to_cpu(np->rx_ring.ex[i].buflow);
1818                 }
1819
1820                 dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, flags 0x%x.\n",
1821                                         dev->name, np->cur_rx, flags);
1822
1823                 if (flags & NV_RX_AVAIL)
1824                         break;  /* still owned by hardware, */
1825
1826                 /*
1827                  * the packet is for us - immediately tear down the pci mapping.
1828                  * TODO: check if a prefetch of the first cacheline improves
1829                  * the performance.
1830                  */
1831                 pci_unmap_single(np->pci_dev, np->rx_dma[i],
1832                                 np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
1833                                 PCI_DMA_FROMDEVICE);
1834
1835                 {
1836                         int j;
1837                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
1838                         for (j=0; j<64; j++) {
1839                                 if ((j%16) == 0)
1840                                         dprintk("\n%03x:", j);
1841                                 dprintk(" %02x", ((unsigned char*)np->rx_skbuff[i]->data)[j]);
1842                         }
1843                         dprintk("\n");
1844                 }
1845                 /* look at what we actually got: */
1846                 if (np->desc_ver == DESC_VER_1) {
1847                         if (!(flags & NV_RX_DESCRIPTORVALID))
1848                                 goto next_pkt;
1849
1850                         if (flags & NV_RX_ERROR) {
1851                                 if (flags & NV_RX_MISSEDFRAME) {
1852                                         np->stats.rx_missed_errors++;
1853                                         np->stats.rx_errors++;
1854                                         goto next_pkt;
1855                                 }
1856                                 if (flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
1857                                         np->stats.rx_errors++;
1858                                         goto next_pkt;
1859                                 }
1860                                 if (flags & NV_RX_CRCERR) {
1861                                         np->stats.rx_crc_errors++;
1862                                         np->stats.rx_errors++;
1863                                         goto next_pkt;
1864                                 }
1865                                 if (flags & NV_RX_OVERFLOW) {
1866                                         np->stats.rx_over_errors++;
1867                                         np->stats.rx_errors++;
1868                                         goto next_pkt;
1869                                 }
1870                                 if (flags & NV_RX_ERROR4) {
1871                                         len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1872                                         if (len < 0) {
1873                                                 np->stats.rx_errors++;
1874                                                 goto next_pkt;
1875                                         }
1876                                 }
1877                                 /* framing errors are soft errors. */
1878                                 if (flags & NV_RX_FRAMINGERR) {
1879                                         if (flags & NV_RX_SUBSTRACT1) {
1880                                                 len--;
1881                                         }
1882                                 }
1883                         }
1884                 } else {
1885                         if (!(flags & NV_RX2_DESCRIPTORVALID))
1886                                 goto next_pkt;
1887
1888                         if (flags & NV_RX2_ERROR) {
1889                                 if (flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
1890                                         np->stats.rx_errors++;
1891                                         goto next_pkt;
1892                                 }
1893                                 if (flags & NV_RX2_CRCERR) {
1894                                         np->stats.rx_crc_errors++;
1895                                         np->stats.rx_errors++;
1896                                         goto next_pkt;
1897                                 }
1898                                 if (flags & NV_RX2_OVERFLOW) {
1899                                         np->stats.rx_over_errors++;
1900                                         np->stats.rx_errors++;
1901                                         goto next_pkt;
1902                                 }
1903                                 if (flags & NV_RX2_ERROR4) {
1904                                         len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
1905                                         if (len < 0) {
1906                                                 np->stats.rx_errors++;
1907                                                 goto next_pkt;
1908                                         }
1909                                 }
1910                                 /* framing errors are soft errors */
1911                                 if (flags & NV_RX2_FRAMINGERR) {
1912                                         if (flags & NV_RX2_SUBSTRACT1) {
1913                                                 len--;
1914                                         }
1915                                 }
1916                         }
1917                         if (np->rx_csum) {
1918                                 flags &= NV_RX2_CHECKSUMMASK;
1919                                 if (flags == NV_RX2_CHECKSUMOK1 ||
1920                                     flags == NV_RX2_CHECKSUMOK2 ||
1921                                     flags == NV_RX2_CHECKSUMOK3) {
1922                                         dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
1923                                         np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
1924                                 } else {
1925                                         dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);
1926                                 }
1927                         }
1928                 }
1929                 /* got a valid packet - forward it to the network core */
1930                 skb = np->rx_skbuff[i];
1931                 np->rx_skbuff[i] = NULL;
1932
1933                 skb_put(skb, len);
1934                 skb->protocol = eth_type_trans(skb, dev);
1935                 dprintk(KERN_DEBUG "%s: nv_rx_process: packet %d with %d bytes, proto %d accepted.\n",
1936                                         dev->name, np->cur_rx, len, skb->protocol);
1937 #ifdef CONFIG_FORCEDETH_NAPI
1938                 if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT))
1939                         vlan_hwaccel_receive_skb(skb, np->vlangrp,
1940                                                  vlanflags & NV_RX3_VLAN_TAG_MASK);
1941                 else
1942                         netif_receive_skb(skb);
1943 #else
1944                 if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT))
1945                         vlan_hwaccel_rx(skb, np->vlangrp,
1946                                         vlanflags & NV_RX3_VLAN_TAG_MASK);
1947                 else
1948                         netif_rx(skb);
1949 #endif
1950                 dev->last_rx = jiffies;
1951                 np->stats.rx_packets++;
1952                 np->stats.rx_bytes += len;
1953 next_pkt:
1954                 np->cur_rx++;
1955         }
1956
1957         return count;
1958 }
1959
1960 static void set_bufsize(struct net_device *dev)
1961 {
1962         struct fe_priv *np = netdev_priv(dev);
1963
1964         if (dev->mtu <= ETH_DATA_LEN)
1965                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
1966         else
1967                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
1968 }
1969
1970 /*
1971  * nv_change_mtu: dev->change_mtu function
1972  * Called with dev_base_lock held for read.
1973  */
1974 static int nv_change_mtu(struct net_device *dev, int new_mtu)
1975 {
1976         struct fe_priv *np = netdev_priv(dev);
1977         int old_mtu;
1978
1979         if (new_mtu < 64 || new_mtu > np->pkt_limit)
1980                 return -EINVAL;
1981
1982         old_mtu = dev->mtu;
1983         dev->mtu = new_mtu;
1984
1985         /* return early if the buffer sizes will not change */
1986         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
1987                 return 0;
1988         if (old_mtu == new_mtu)
1989                 return 0;
1990
1991         /* synchronized against open : rtnl_lock() held by caller */
1992         if (netif_running(dev)) {
1993                 u8 __iomem *base = get_hwbase(dev);
1994                 /*
1995                  * It seems that the nic preloads valid ring entries into an
1996                  * internal buffer. The procedure for flushing everything is
1997                  * guessed, there is probably a simpler approach.
1998                  * Changing the MTU is a rare event, it shouldn't matter.
1999                  */
2000                 nv_disable_irq(dev);
2001                 netif_tx_lock_bh(dev);
2002                 spin_lock(&np->lock);
2003                 /* stop engines */
2004                 nv_stop_rx(dev);
2005                 nv_stop_tx(dev);
2006                 nv_txrx_reset(dev);
2007                 /* drain rx queue */
2008                 nv_drain_rx(dev);
2009                 nv_drain_tx(dev);
2010                 /* reinit driver view of the rx queue */
2011                 set_bufsize(dev);
2012                 if (nv_init_ring(dev)) {
2013                         if (!np->in_shutdown)
2014                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2015                 }
2016                 /* reinit nic view of the rx queue */
2017                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2018                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2019                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2020                         base + NvRegRingSizes);
2021                 pci_push(base);
2022                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2023                 pci_push(base);
2024
2025                 /* restart rx engine */
2026                 nv_start_rx(dev);
2027                 nv_start_tx(dev);
2028                 spin_unlock(&np->lock);
2029                 netif_tx_unlock_bh(dev);
2030                 nv_enable_irq(dev);
2031         }
2032         return 0;
2033 }
2034
2035 static void nv_copy_mac_to_hw(struct net_device *dev)
2036 {
2037         u8 __iomem *base = get_hwbase(dev);
2038         u32 mac[2];
2039
2040         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
2041                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
2042         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
2043
2044         writel(mac[0], base + NvRegMacAddrA);
2045         writel(mac[1], base + NvRegMacAddrB);
2046 }
2047
2048 /*
2049  * nv_set_mac_address: dev->set_mac_address function
2050  * Called with rtnl_lock() held.
2051  */
2052 static int nv_set_mac_address(struct net_device *dev, void *addr)
2053 {
2054         struct fe_priv *np = netdev_priv(dev);
2055         struct sockaddr *macaddr = (struct sockaddr*)addr;
2056
2057         if (!is_valid_ether_addr(macaddr->sa_data))
2058                 return -EADDRNOTAVAIL;
2059
2060         /* synchronized against open : rtnl_lock() held by caller */
2061         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
2062
2063         if (netif_running(dev)) {
2064                 netif_tx_lock_bh(dev);
2065                 spin_lock_irq(&np->lock);
2066
2067                 /* stop rx engine */
2068                 nv_stop_rx(dev);
2069
2070                 /* set mac address */
2071                 nv_copy_mac_to_hw(dev);
2072
2073                 /* restart rx engine */
2074                 nv_start_rx(dev);
2075                 spin_unlock_irq(&np->lock);
2076                 netif_tx_unlock_bh(dev);
2077         } else {
2078                 nv_copy_mac_to_hw(dev);
2079         }
2080         return 0;
2081 }
2082
2083 /*
2084  * nv_set_multicast: dev->set_multicast function
2085  * Called with netif_tx_lock held.
2086  */
2087 static void nv_set_multicast(struct net_device *dev)
2088 {
2089         struct fe_priv *np = netdev_priv(dev);
2090         u8 __iomem *base = get_hwbase(dev);
2091         u32 addr[2];
2092         u32 mask[2];
2093         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
2094
2095         memset(addr, 0, sizeof(addr));
2096         memset(mask, 0, sizeof(mask));
2097
2098         if (dev->flags & IFF_PROMISC) {
2099                 pff |= NVREG_PFF_PROMISC;
2100         } else {
2101                 pff |= NVREG_PFF_MYADDR;
2102
2103                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
2104                         u32 alwaysOff[2];
2105                         u32 alwaysOn[2];
2106
2107                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
2108                         if (dev->flags & IFF_ALLMULTI) {
2109                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
2110                         } else {
2111                                 struct dev_mc_list *walk;
2112
2113                                 walk = dev->mc_list;
2114                                 while (walk != NULL) {
2115                                         u32 a, b;
2116                                         a = le32_to_cpu(*(u32 *) walk->dmi_addr);
2117                                         b = le16_to_cpu(*(u16 *) (&walk->dmi_addr[4]));
2118                                         alwaysOn[0] &= a;
2119                                         alwaysOff[0] &= ~a;
2120                                         alwaysOn[1] &= b;
2121                                         alwaysOff[1] &= ~b;
2122                                         walk = walk->next;
2123                                 }
2124                         }
2125                         addr[0] = alwaysOn[0];
2126                         addr[1] = alwaysOn[1];
2127                         mask[0] = alwaysOn[0] | alwaysOff[0];
2128                         mask[1] = alwaysOn[1] | alwaysOff[1];
2129                 }
2130         }
2131         addr[0] |= NVREG_MCASTADDRA_FORCE;
2132         pff |= NVREG_PFF_ALWAYS;
2133         spin_lock_irq(&np->lock);
2134         nv_stop_rx(dev);
2135         writel(addr[0], base + NvRegMulticastAddrA);
2136         writel(addr[1], base + NvRegMulticastAddrB);
2137         writel(mask[0], base + NvRegMulticastMaskA);
2138         writel(mask[1], base + NvRegMulticastMaskB);
2139         writel(pff, base + NvRegPacketFilterFlags);
2140         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
2141                 dev->name);
2142         nv_start_rx(dev);
2143         spin_unlock_irq(&np->lock);
2144 }
2145
2146 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
2147 {
2148         struct fe_priv *np = netdev_priv(dev);
2149         u8 __iomem *base = get_hwbase(dev);
2150
2151         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
2152
2153         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
2154                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
2155                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
2156                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
2157                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2158                 } else {
2159                         writel(pff, base + NvRegPacketFilterFlags);
2160                 }
2161         }
2162         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
2163                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
2164                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
2165                         writel(NVREG_TX_PAUSEFRAME_ENABLE,  base + NvRegTxPauseFrame);
2166                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
2167                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2168                 } else {
2169                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
2170                         writel(regmisc, base + NvRegMisc1);
2171                 }
2172         }
2173 }
2174
2175 /**
2176  * nv_update_linkspeed: Setup the MAC according to the link partner
2177  * @dev: Network device to be configured
2178  *
2179  * The function queries the PHY and checks if there is a link partner.
2180  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
2181  * set to 10 MBit HD.
2182  *
2183  * The function returns 0 if there is no link partner and 1 if there is
2184  * a good link partner.
2185  */
2186 static int nv_update_linkspeed(struct net_device *dev)
2187 {
2188         struct fe_priv *np = netdev_priv(dev);
2189         u8 __iomem *base = get_hwbase(dev);
2190         int adv = 0;
2191         int lpa = 0;
2192         int adv_lpa, adv_pause, lpa_pause;
2193         int newls = np->linkspeed;
2194         int newdup = np->duplex;
2195         int mii_status;
2196         int retval = 0;
2197         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
2198
2199         /* BMSR_LSTATUS is latched, read it twice:
2200          * we want the current value.
2201          */
2202         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2203         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2204
2205         if (!(mii_status & BMSR_LSTATUS)) {
2206                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
2207                                 dev->name);
2208                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2209                 newdup = 0;
2210                 retval = 0;
2211                 goto set_speed;
2212         }
2213
2214         if (np->autoneg == 0) {
2215                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
2216                                 dev->name, np->fixed_mode);
2217                 if (np->fixed_mode & LPA_100FULL) {
2218                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2219                         newdup = 1;
2220                 } else if (np->fixed_mode & LPA_100HALF) {
2221                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2222                         newdup = 0;
2223                 } else if (np->fixed_mode & LPA_10FULL) {
2224                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2225                         newdup = 1;
2226                 } else {
2227                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2228                         newdup = 0;
2229                 }
2230                 retval = 1;
2231                 goto set_speed;
2232         }
2233         /* check auto negotiation is complete */
2234         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
2235                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
2236                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2237                 newdup = 0;
2238                 retval = 0;
2239                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
2240                 goto set_speed;
2241         }
2242
2243         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2244         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
2245         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
2246                                 dev->name, adv, lpa);
2247
2248         retval = 1;
2249         if (np->gigabit == PHY_GIGABIT) {
2250                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
2251                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
2252
2253                 if ((control_1000 & ADVERTISE_1000FULL) &&
2254                         (status_1000 & LPA_1000FULL)) {
2255                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
2256                                 dev->name);
2257                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
2258                         newdup = 1;
2259                         goto set_speed;
2260                 }
2261         }
2262
2263         /* FIXME: handle parallel detection properly */
2264         adv_lpa = lpa & adv;
2265         if (adv_lpa & LPA_100FULL) {
2266                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2267                 newdup = 1;
2268         } else if (adv_lpa & LPA_100HALF) {
2269                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2270                 newdup = 0;
2271         } else if (adv_lpa & LPA_10FULL) {
2272                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2273                 newdup = 1;
2274         } else if (adv_lpa & LPA_10HALF) {
2275                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2276                 newdup = 0;
2277         } else {
2278                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, adv_lpa);
2279                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2280                 newdup = 0;
2281         }
2282
2283 set_speed:
2284         if (np->duplex == newdup && np->linkspeed == newls)
2285                 return retval;
2286
2287         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
2288                         dev->name, np->linkspeed, np->duplex, newls, newdup);
2289
2290         np->duplex = newdup;
2291         np->linkspeed = newls;
2292
2293         if (np->gigabit == PHY_GIGABIT) {
2294                 phyreg = readl(base + NvRegRandomSeed);
2295                 phyreg &= ~(0x3FF00);
2296                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
2297                         phyreg |= NVREG_RNDSEED_FORCE3;
2298                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
2299                         phyreg |= NVREG_RNDSEED_FORCE2;
2300                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
2301                         phyreg |= NVREG_RNDSEED_FORCE;
2302                 writel(phyreg, base + NvRegRandomSeed);
2303         }
2304
2305         phyreg = readl(base + NvRegPhyInterface);
2306         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
2307         if (np->duplex == 0)
2308                 phyreg |= PHY_HALF;
2309         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
2310                 phyreg |= PHY_100;
2311         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2312                 phyreg |= PHY_1000;
2313         writel(phyreg, base + NvRegPhyInterface);
2314
2315         if (phyreg & PHY_RGMII) {
2316                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2317                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
2318                 else
2319                         txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
2320         } else {
2321                 txreg = NVREG_TX_DEFERRAL_DEFAULT;
2322         }
2323         writel(txreg, base + NvRegTxDeferral);
2324
2325         if (np->desc_ver == DESC_VER_1) {
2326                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
2327         } else {
2328                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2329                         txreg = NVREG_TX_WM_DESC2_3_1000;
2330                 else
2331                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
2332         }
2333         writel(txreg, base + NvRegTxWatermark);
2334
2335         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
2336                 base + NvRegMisc1);
2337         pci_push(base);
2338         writel(np->linkspeed, base + NvRegLinkSpeed);
2339         pci_push(base);
2340
2341         pause_flags = 0;
2342         /* setup pause frame */
2343         if (np->duplex != 0) {
2344                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
2345                         adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
2346                         lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
2347
2348                         switch (adv_pause) {
2349                         case ADVERTISE_PAUSE_CAP:
2350                                 if (lpa_pause & LPA_PAUSE_CAP) {
2351                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2352                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2353                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2354                                 }
2355                                 break;
2356                         case ADVERTISE_PAUSE_ASYM:
2357                                 if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
2358                                 {
2359                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2360                                 }
2361                                 break;
2362                         case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
2363                                 if (lpa_pause & LPA_PAUSE_CAP)
2364                                 {
2365                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
2366                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2367                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2368                                 }
2369                                 if (lpa_pause == LPA_PAUSE_ASYM)
2370                                 {
2371                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2372                                 }
2373                                 break;
2374                         }
2375                 } else {
2376                         pause_flags = np->pause_flags;
2377                 }
2378         }
2379         nv_update_pause(dev, pause_flags);
2380
2381         return retval;
2382 }
2383
2384 static void nv_linkchange(struct net_device *dev)
2385 {
2386         if (nv_update_linkspeed(dev)) {
2387                 if (!netif_carrier_ok(dev)) {
2388                         netif_carrier_on(dev);
2389                         printk(KERN_INFO "%s: link up.\n", dev->name);
2390                         nv_start_rx(dev);
2391                 }
2392         } else {
2393                 if (netif_carrier_ok(dev)) {
2394                         netif_carrier_off(dev);
2395                         printk(KERN_INFO "%s: link down.\n", dev->name);
2396                         nv_stop_rx(dev);
2397                 }
2398         }
2399 }
2400
2401 static void nv_link_irq(struct net_device *dev)
2402 {
2403         u8 __iomem *base = get_hwbase(dev);
2404         u32 miistat;
2405
2406         miistat = readl(base + NvRegMIIStatus);
2407         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
2408         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
2409
2410         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
2411                 nv_linkchange(dev);
2412         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
2413 }
2414
2415 static irqreturn_t nv_nic_irq(int foo, void *data)
2416 {
2417         struct net_device *dev = (struct net_device *) data;
2418         struct fe_priv *np = netdev_priv(dev);
2419         u8 __iomem *base = get_hwbase(dev);
2420         u32 events;
2421         int i;
2422
2423         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
2424
2425         for (i=0; ; i++) {
2426                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
2427                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2428                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2429                 } else {
2430                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2431                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
2432                 }
2433                 pci_push(base);
2434                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2435                 if (!(events & np->irqmask))
2436                         break;
2437
2438                 spin_lock(&np->lock);
2439                 nv_tx_done(dev);
2440                 spin_unlock(&np->lock);
2441
2442                 if (events & NVREG_IRQ_LINK) {
2443                         spin_lock(&np->lock);
2444                         nv_link_irq(dev);
2445                         spin_unlock(&np->lock);
2446                 }
2447                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
2448                         spin_lock(&np->lock);
2449                         nv_linkchange(dev);
2450                         spin_unlock(&np->lock);
2451                         np->link_timeout = jiffies + LINK_TIMEOUT;
2452                 }
2453                 if (events & (NVREG_IRQ_TX_ERR)) {
2454                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2455                                                 dev->name, events);
2456                 }
2457                 if (events & (NVREG_IRQ_UNKNOWN)) {
2458                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2459                                                 dev->name, events);
2460                 }
2461                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
2462                         spin_lock(&np->lock);
2463                         /* disable interrupts on the nic */
2464                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2465                                 writel(0, base + NvRegIrqMask);
2466                         else
2467                                 writel(np->irqmask, base + NvRegIrqMask);
2468                         pci_push(base);
2469
2470                         if (!np->in_shutdown) {
2471                                 np->nic_poll_irq = np->irqmask;
2472                                 np->recover_error = 1;
2473                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2474                         }
2475                         spin_unlock(&np->lock);
2476                         break;
2477                 }
2478 #ifdef CONFIG_FORCEDETH_NAPI
2479                 if (events & NVREG_IRQ_RX_ALL) {
2480                         netif_rx_schedule(dev);
2481
2482                         /* Disable furthur receive irq's */
2483                         spin_lock(&np->lock);
2484                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
2485
2486                         if (np->msi_flags & NV_MSI_X_ENABLED)
2487                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2488                         else
2489                                 writel(np->irqmask, base + NvRegIrqMask);
2490                         spin_unlock(&np->lock);
2491                 }
2492 #else
2493                 nv_rx_process(dev, dev->weight);
2494                 if (nv_alloc_rx(dev)) {
2495                         spin_lock(&np->lock);
2496                         if (!np->in_shutdown)
2497                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2498                         spin_unlock(&np->lock);
2499                 }
2500 #endif
2501                 if (i > max_interrupt_work) {
2502                         spin_lock(&np->lock);
2503                         /* disable interrupts on the nic */
2504                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2505                                 writel(0, base + NvRegIrqMask);
2506                         else
2507                                 writel(np->irqmask, base + NvRegIrqMask);
2508                         pci_push(base);
2509
2510                         if (!np->in_shutdown) {
2511                                 np->nic_poll_irq = np->irqmask;
2512                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2513                         }
2514                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
2515                         spin_unlock(&np->lock);
2516                         break;
2517                 }
2518
2519         }
2520         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
2521
2522         return IRQ_RETVAL(i);
2523 }
2524
2525 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
2526 {
2527         struct net_device *dev = (struct net_device *) data;
2528         struct fe_priv *np = netdev_priv(dev);
2529         u8 __iomem *base = get_hwbase(dev);
2530         u32 events;
2531         int i;
2532         unsigned long flags;
2533
2534         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
2535
2536         for (i=0; ; i++) {
2537                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
2538                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
2539                 pci_push(base);
2540                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
2541                 if (!(events & np->irqmask))
2542                         break;
2543
2544                 spin_lock_irqsave(&np->lock, flags);
2545                 nv_tx_done(dev);
2546                 spin_unlock_irqrestore(&np->lock, flags);
2547
2548                 if (events & (NVREG_IRQ_TX_ERR)) {
2549                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2550                                                 dev->name, events);
2551                 }
2552                 if (i > max_interrupt_work) {
2553                         spin_lock_irqsave(&np->lock, flags);
2554                         /* disable interrupts on the nic */
2555                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
2556                         pci_push(base);
2557
2558                         if (!np->in_shutdown) {
2559                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
2560                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2561                         }
2562                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
2563                         spin_unlock_irqrestore(&np->lock, flags);
2564                         break;
2565                 }
2566
2567         }
2568         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
2569
2570         return IRQ_RETVAL(i);
2571 }
2572
2573 #ifdef CONFIG_FORCEDETH_NAPI
2574 static int nv_napi_poll(struct net_device *dev, int *budget)
2575 {
2576         int pkts, limit = min(*budget, dev->quota);
2577         struct fe_priv *np = netdev_priv(dev);
2578         u8 __iomem *base = get_hwbase(dev);
2579
2580         pkts = nv_rx_process(dev, limit);
2581
2582         if (nv_alloc_rx(dev)) {
2583                 spin_lock_irq(&np->lock);
2584                 if (!np->in_shutdown)
2585                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2586                 spin_unlock_irq(&np->lock);
2587         }
2588
2589         if (pkts < limit) {
2590                 /* all done, no more packets present */
2591                 netif_rx_complete(dev);
2592
2593                 /* re-enable receive interrupts */
2594                 spin_lock_irq(&np->lock);
2595                 np->irqmask |= NVREG_IRQ_RX_ALL;
2596                 if (np->msi_flags & NV_MSI_X_ENABLED)
2597                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2598                 else
2599                         writel(np->irqmask, base + NvRegIrqMask);
2600                 spin_unlock_irq(&np->lock);
2601                 return 0;
2602         } else {
2603                 /* used up our quantum, so reschedule */
2604                 dev->quota -= pkts;
2605                 *budget -= pkts;
2606                 return 1;
2607         }
2608 }
2609 #endif
2610
2611 #ifdef CONFIG_FORCEDETH_NAPI
2612 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
2613 {
2614         struct net_device *dev = (struct net_device *) data;
2615         u8 __iomem *base = get_hwbase(dev);
2616         u32 events;
2617
2618         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
2619         writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
2620
2621         if (events) {
2622                 netif_rx_schedule(dev);
2623                 /* disable receive interrupts on the nic */
2624                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2625                 pci_push(base);
2626         }
2627         return IRQ_HANDLED;
2628 }
2629 #else
2630 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
2631 {
2632         struct net_device *dev = (struct net_device *) data;
2633         struct fe_priv *np = netdev_priv(dev);
2634         u8 __iomem *base = get_hwbase(dev);
2635         u32 events;
2636         int i;
2637         unsigned long flags;
2638
2639         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
2640
2641         for (i=0; ; i++) {
2642                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
2643                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
2644                 pci_push(base);
2645                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
2646                 if (!(events & np->irqmask))
2647                         break;
2648
2649                 nv_rx_process(dev, dev->weight);
2650                 if (nv_alloc_rx(dev)) {
2651                         spin_lock_irqsave(&np->lock, flags);
2652                         if (!np->in_shutdown)
2653                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2654                         spin_unlock_irqrestore(&np->lock, flags);
2655                 }
2656
2657                 if (i > max_interrupt_work) {
2658                         spin_lock_irqsave(&np->lock, flags);
2659                         /* disable interrupts on the nic */
2660                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2661                         pci_push(base);
2662
2663                         if (!np->in_shutdown) {
2664                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
2665                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2666                         }
2667                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
2668                         spin_unlock_irqrestore(&np->lock, flags);
2669                         break;
2670                 }
2671         }
2672         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
2673
2674         return IRQ_RETVAL(i);
2675 }
2676 #endif
2677
2678 static irqreturn_t nv_nic_irq_other(int foo, void *data)
2679 {
2680         struct net_device *dev = (struct net_device *) data;
2681         struct fe_priv *np = netdev_priv(dev);
2682         u8 __iomem *base = get_hwbase(dev);
2683         u32 events;
2684         int i;
2685         unsigned long flags;
2686
2687         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
2688
2689         for (i=0; ; i++) {
2690                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
2691                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
2692                 pci_push(base);
2693                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2694                 if (!(events & np->irqmask))
2695                         break;
2696
2697                 if (events & NVREG_IRQ_LINK) {
2698                         spin_lock_irqsave(&np->lock, flags);
2699                         nv_link_irq(dev);
2700                         spin_unlock_irqrestore(&np->lock, flags);
2701                 }
2702                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
2703                         spin_lock_irqsave(&np->lock, flags);
2704                         nv_linkchange(dev);
2705                         spin_unlock_irqrestore(&np->lock, flags);
2706                         np->link_timeout = jiffies + LINK_TIMEOUT;
2707                 }
2708                 if (events & NVREG_IRQ_RECOVER_ERROR) {
2709                         spin_lock_irq(&np->lock);
2710                         /* disable interrupts on the nic */
2711                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
2712                         pci_push(base);
2713
2714                         if (!np->in_shutdown) {
2715                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
2716                                 np->recover_error = 1;
2717                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2718                         }
2719                         spin_unlock_irq(&np->lock);
2720                         break;
2721                 }
2722                 if (events & (NVREG_IRQ_UNKNOWN)) {
2723                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2724                                                 dev->name, events);
2725                 }
2726                 if (i > max_interrupt_work) {
2727                         spin_lock_irqsave(&np->lock, flags);
2728                         /* disable interrupts on the nic */
2729                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
2730                         pci_push(base);
2731
2732                         if (!np->in_shutdown) {
2733                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
2734                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2735                         }
2736                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
2737                         spin_unlock_irqrestore(&np->lock, flags);
2738                         break;
2739                 }
2740
2741         }
2742         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
2743
2744         return IRQ_RETVAL(i);
2745 }
2746
2747 static irqreturn_t nv_nic_irq_test(int foo, void *data)
2748 {
2749         struct net_device *dev = (struct net_device *) data;
2750         struct fe_priv *np = netdev_priv(dev);
2751         u8 __iomem *base = get_hwbase(dev);
2752         u32 events;
2753
2754         dprintk(KERN_DEBUG "%s: nv_nic_irq_test\n", dev->name);
2755
2756         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
2757                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2758                 writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
2759         } else {
2760                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2761                 writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
2762         }
2763         pci_push(base);
2764         dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2765         if (!(events & NVREG_IRQ_TIMER))
2766                 return IRQ_RETVAL(0);
2767
2768         spin_lock(&np->lock);
2769         np->intr_test = 1;
2770         spin_unlock(&np->lock);
2771
2772         dprintk(KERN_DEBUG "%s: nv_nic_irq_test completed\n", dev->name);
2773
2774         return IRQ_RETVAL(1);
2775 }
2776
2777 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
2778 {
2779         u8 __iomem *base = get_hwbase(dev);
2780         int i;
2781         u32 msixmap = 0;
2782
2783         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
2784          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
2785          * the remaining 8 interrupts.
2786          */
2787         for (i = 0; i < 8; i++) {
2788                 if ((irqmask >> i) & 0x1) {
2789                         msixmap |= vector << (i << 2);
2790                 }
2791         }
2792         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
2793
2794         msixmap = 0;
2795         for (i = 0; i < 8; i++) {
2796                 if ((irqmask >> (i + 8)) & 0x1) {
2797                         msixmap |= vector << (i << 2);
2798                 }
2799         }
2800         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
2801 }
2802
2803 static int nv_request_irq(struct net_device *dev, int intr_test)
2804 {
2805         struct fe_priv *np = get_nvpriv(dev);
2806         u8 __iomem *base = get_hwbase(dev);
2807         int ret = 1;
2808         int i;
2809
2810         if (np->msi_flags & NV_MSI_X_CAPABLE) {
2811                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
2812                         np->msi_x_entry[i].entry = i;
2813                 }
2814                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
2815                         np->msi_flags |= NV_MSI_X_ENABLED;
2816                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
2817                                 /* Request irq for rx handling */
2818                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, IRQF_SHARED, dev->name, dev) != 0) {
2819                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
2820                                         pci_disable_msix(np->pci_dev);
2821                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2822                                         goto out_err;
2823                                 }
2824                                 /* Request irq for tx handling */
2825                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, IRQF_SHARED, dev->name, dev) != 0) {
2826                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
2827                                         pci_disable_msix(np->pci_dev);
2828                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2829                                         goto out_free_rx;
2830                                 }
2831                                 /* Request irq for link and timer handling */
2832                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, IRQF_SHARED, dev->name, dev) != 0) {
2833                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
2834                                         pci_disable_msix(np->pci_dev);
2835                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2836                                         goto out_free_tx;
2837                                 }
2838                                 /* map interrupts to their respective vector */
2839                                 writel(0, base + NvRegMSIXMap0);
2840                                 writel(0, base + NvRegMSIXMap1);
2841                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
2842                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
2843                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
2844                         } else {
2845                                 /* Request irq for all interrupts */
2846                                 if ((!intr_test &&
2847                                      request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, &nv_nic_irq, IRQF_SHARED, dev->name, dev) != 0) ||
2848                                     (intr_test &&
2849                                      request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, &nv_nic_irq_test, IRQF_SHARED, dev->name, dev) != 0)) {
2850                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
2851                                         pci_disable_msix(np->pci_dev);
2852                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
2853                                         goto out_err;
2854                                 }
2855
2856                                 /* map interrupts to vector 0 */
2857                                 writel(0, base + NvRegMSIXMap0);
2858                                 writel(0, base + NvRegMSIXMap1);
2859                         }
2860                 }
2861         }
2862         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
2863                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
2864                         np->msi_flags |= NV_MSI_ENABLED;
2865                         if ((!intr_test && request_irq(np->pci_dev->irq, &nv_nic_irq, IRQF_SHARED, dev->name, dev) != 0) ||
2866                             (intr_test && request_irq(np->pci_dev->irq, &nv_nic_irq_test, IRQF_SHARED, dev->name, dev) != 0)) {
2867                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
2868                                 pci_disable_msi(np->pci_dev);
2869                                 np->msi_flags &= ~NV_MSI_ENABLED;
2870                                 goto out_err;
2871                         }
2872
2873                         /* map interrupts to vector 0 */
2874                         writel(0, base + NvRegMSIMap0);
2875                         writel(0, base + NvRegMSIMap1);
2876                         /* enable msi vector 0 */
2877                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
2878                 }
2879         }
2880         if (ret != 0) {
2881                 if ((!intr_test && request_irq(np->pci_dev->irq, &nv_nic_irq, IRQF_SHARED, dev->name, dev) != 0) ||
2882                     (intr_test && request_irq(np->pci_dev->irq, &nv_nic_irq_test, IRQF_SHARED, dev->name, dev) != 0))
2883                         goto out_err;
2884
2885         }
2886
2887         return 0;
2888 out_free_tx:
2889         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
2890 out_free_rx:
2891         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
2892 out_err:
2893         return 1;
2894 }
2895
2896 static void nv_free_irq(struct net_device *dev)
2897 {
2898         struct fe_priv *np = get_nvpriv(dev);
2899         int i;
2900
2901         if (np->msi_flags & NV_MSI_X_ENABLED) {
2902                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
2903                         free_irq(np->msi_x_entry[i].vector, dev);
2904                 }
2905                 pci_disable_msix(np->pci_dev);
2906                 np->msi_flags &= ~NV_MSI_X_ENABLED;
2907         } else {
2908                 free_irq(np->pci_dev->irq, dev);
2909                 if (np->msi_flags & NV_MSI_ENABLED) {
2910                         pci_disable_msi(np->pci_dev);
2911                         np->msi_flags &= ~NV_MSI_ENABLED;
2912                 }
2913         }
2914 }
2915
2916 static void nv_do_nic_poll(unsigned long data)
2917 {
2918         struct net_device *dev = (struct net_device *) data;
2919         struct fe_priv *np = netdev_priv(dev);
2920         u8 __iomem *base = get_hwbase(dev);
2921         u32 mask = 0;
2922
2923         /*
2924          * First disable irq(s) and then
2925          * reenable interrupts on the nic, we have to do this before calling
2926          * nv_nic_irq because that may decide to do otherwise
2927          */
2928
2929         if (!using_multi_irqs(dev)) {
2930                 if (np->msi_flags & NV_MSI_X_ENABLED)
2931                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
2932                 else
2933                         disable_irq_lockdep(dev->irq);
2934                 mask = np->irqmask;
2935         } else {
2936                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
2937                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
2938                         mask |= NVREG_IRQ_RX_ALL;
2939                 }
2940                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
2941                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
2942                         mask |= NVREG_IRQ_TX_ALL;
2943                 }
2944                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
2945                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
2946                         mask |= NVREG_IRQ_OTHER;
2947                 }
2948         }
2949         np->nic_poll_irq = 0;
2950
2951         if (np->recover_error) {
2952                 np->recover_error = 0;
2953                 printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
2954                 if (netif_running(dev)) {
2955                         netif_tx_lock_bh(dev);
2956                         spin_lock(&np->lock);
2957                         /* stop engines */
2958                         nv_stop_rx(dev);
2959                         nv_stop_tx(dev);
2960                         nv_txrx_reset(dev);
2961                         /* drain rx queue */
2962                         nv_drain_rx(dev);
2963                         nv_drain_tx(dev);
2964                         /* reinit driver view of the rx queue */
2965                         set_bufsize(dev);
2966                         if (nv_init_ring(dev)) {
2967                                 if (!np->in_shutdown)
2968                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2969                         }
2970                         /* reinit nic view of the rx queue */
2971                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2972                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2973                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2974                                 base + NvRegRingSizes);
2975                         pci_push(base);
2976                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2977                         pci_push(base);
2978
2979                         /* restart rx engine */
2980                         nv_start_rx(dev);
2981                         nv_start_tx(dev);
2982                         spin_unlock(&np->lock);
2983                         netif_tx_unlock_bh(dev);
2984                 }
2985         }
2986
2987         /* FIXME: Do we need synchronize_irq(dev->irq) here? */
2988
2989         writel(mask, base + NvRegIrqMask);
2990         pci_push(base);
2991
2992         if (!using_multi_irqs(dev)) {
2993                 nv_nic_irq(0, dev);
2994                 if (np->msi_flags & NV_MSI_X_ENABLED)
2995                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
2996                 else
2997                         enable_irq_lockdep(dev->irq);
2998         } else {
2999                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3000                         nv_nic_irq_rx(0, dev);
3001                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3002                 }
3003                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3004                         nv_nic_irq_tx(0, dev);
3005                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3006                 }
3007                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3008                         nv_nic_irq_other(0, dev);
3009                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3010                 }
3011         }
3012 }
3013
3014 #ifdef CONFIG_NET_POLL_CONTROLLER
3015 static void nv_poll_controller(struct net_device *dev)
3016 {
3017         nv_do_nic_poll((unsigned long) dev);
3018 }
3019 #endif
3020
3021 static void nv_do_stats_poll(unsigned long data)
3022 {
3023         struct net_device *dev = (struct net_device *) data;
3024         struct fe_priv *np = netdev_priv(dev);
3025         u8 __iomem *base = get_hwbase(dev);
3026
3027         np->estats.tx_bytes += readl(base + NvRegTxCnt);
3028         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
3029         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
3030         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
3031         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
3032         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
3033         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
3034         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
3035         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
3036         np->estats.tx_deferral += readl(base + NvRegTxDef);
3037         np->estats.tx_packets += readl(base + NvRegTxFrame);
3038         np->estats.tx_pause += readl(base + NvRegTxPause);
3039         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
3040         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
3041         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
3042         np->estats.rx_runt += readl(base + NvRegRxRunt);
3043         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
3044         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
3045         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
3046         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
3047         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
3048         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
3049         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
3050         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
3051         np->estats.rx_bytes += readl(base + NvRegRxCnt);
3052         np->estats.rx_pause += readl(base + NvRegRxPause);
3053         np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
3054         np->estats.rx_packets =
3055                 np->estats.rx_unicast +
3056                 np->estats.rx_multicast +
3057                 np->estats.rx_broadcast;
3058         np->estats.rx_errors_total =
3059                 np->estats.rx_crc_errors +
3060                 np->estats.rx_over_errors +
3061                 np->estats.rx_frame_error +
3062                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
3063                 np->estats.rx_late_collision +
3064                 np->estats.rx_runt +
3065                 np->estats.rx_frame_too_long;
3066
3067         if (!np->in_shutdown)
3068                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
3069 }
3070
3071 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3072 {
3073         struct fe_priv *np = netdev_priv(dev);
3074         strcpy(info->driver, "forcedeth");
3075         strcpy(info->version, FORCEDETH_VERSION);
3076         strcpy(info->bus_info, pci_name(np->pci_dev));
3077 }
3078
3079 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3080 {
3081         struct fe_priv *np = netdev_priv(dev);
3082         wolinfo->supported = WAKE_MAGIC;
3083
3084         spin_lock_irq(&np->lock);
3085         if (np->wolenabled)
3086                 wolinfo->wolopts = WAKE_MAGIC;
3087         spin_unlock_irq(&np->lock);
3088 }
3089
3090 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3091 {
3092         struct fe_priv *np = netdev_priv(dev);
3093         u8 __iomem *base = get_hwbase(dev);
3094         u32 flags = 0;
3095
3096         if (wolinfo->wolopts == 0) {
3097                 np->wolenabled = 0;
3098         } else if (wolinfo->wolopts & WAKE_MAGIC) {
3099                 np->wolenabled = 1;
3100                 flags = NVREG_WAKEUPFLAGS_ENABLE;
3101         }
3102         if (netif_running(dev)) {
3103                 spin_lock_irq(&np->lock);
3104                 writel(flags, base + NvRegWakeUpFlags);
3105                 spin_unlock_irq(&np->lock);
3106         }
3107         return 0;
3108 }
3109
3110 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3111 {
3112         struct fe_priv *np = netdev_priv(dev);
3113         int adv;
3114
3115         spin_lock_irq(&np->lock);
3116         ecmd->port = PORT_MII;
3117         if (!netif_running(dev)) {
3118                 /* We do not track link speed / duplex setting if the
3119                  * interface is disabled. Force a link check */
3120                 if (nv_update_linkspeed(dev)) {
3121                         if (!netif_carrier_ok(dev))
3122                                 netif_carrier_on(dev);
3123                 } else {
3124                         if (netif_carrier_ok(dev))
3125                                 netif_carrier_off(dev);
3126                 }
3127         }
3128
3129         if (netif_carrier_ok(dev)) {
3130                 switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
3131                 case NVREG_LINKSPEED_10:
3132                         ecmd->speed = SPEED_10;
3133                         break;
3134                 case NVREG_LINKSPEED_100:
3135                         ecmd->speed = SPEED_100;
3136                         break;
3137                 case NVREG_LINKSPEED_1000:
3138                         ecmd->speed = SPEED_1000;
3139                         break;
3140                 }
3141                 ecmd->duplex = DUPLEX_HALF;
3142                 if (np->duplex)
3143                         ecmd->duplex = DUPLEX_FULL;
3144         } else {
3145                 ecmd->speed = -1;
3146                 ecmd->duplex = -1;
3147         }
3148
3149         ecmd->autoneg = np->autoneg;
3150
3151         ecmd->advertising = ADVERTISED_MII;
3152         if (np->autoneg) {
3153                 ecmd->advertising |= ADVERTISED_Autoneg;
3154                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3155                 if (adv & ADVERTISE_10HALF)
3156                         ecmd->advertising |= ADVERTISED_10baseT_Half;
3157                 if (adv & ADVERTISE_10FULL)
3158                         ecmd->advertising |= ADVERTISED_10baseT_Full;
3159                 if (adv & ADVERTISE_100HALF)
3160                         ecmd->advertising |= ADVERTISED_100baseT_Half;
3161                 if (adv & ADVERTISE_100FULL)
3162                         ecmd->advertising |= ADVERTISED_100baseT_Full;
3163                 if (np->gigabit == PHY_GIGABIT) {
3164                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3165                         if (adv & ADVERTISE_1000FULL)
3166                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
3167                 }
3168         }
3169         ecmd->supported = (SUPPORTED_Autoneg |
3170                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
3171                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
3172                 SUPPORTED_MII);
3173         if (np->gigabit == PHY_GIGABIT)
3174                 ecmd->supported |= SUPPORTED_1000baseT_Full;
3175
3176         ecmd->phy_address = np->phyaddr;
3177         ecmd->transceiver = XCVR_EXTERNAL;
3178
3179         /* ignore maxtxpkt, maxrxpkt for now */
3180         spin_unlock_irq(&np->lock);
3181         return 0;
3182 }
3183
3184 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3185 {
3186         struct fe_priv *np = netdev_priv(dev);
3187
3188         if (ecmd->port != PORT_MII)
3189                 return -EINVAL;
3190         if (ecmd->transceiver != XCVR_EXTERNAL)
3191                 return -EINVAL;
3192         if (ecmd->phy_address != np->phyaddr) {
3193                 /* TODO: support switching between multiple phys. Should be
3194                  * trivial, but not enabled due to lack of test hardware. */
3195                 return -EINVAL;
3196         }
3197         if (ecmd->autoneg == AUTONEG_ENABLE) {
3198                 u32 mask;
3199
3200                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
3201                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
3202                 if (np->gigabit == PHY_GIGABIT)
3203                         mask |= ADVERTISED_1000baseT_Full;
3204
3205                 if ((ecmd->advertising & mask) == 0)
3206                         return -EINVAL;
3207
3208         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
3209                 /* Note: autonegotiation disable, speed 1000 intentionally
3210                  * forbidden - noone should need that. */
3211
3212                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
3213                         return -EINVAL;
3214                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
3215                         return -EINVAL;
3216         } else {
3217                 return -EINVAL;
3218         }
3219
3220         netif_carrier_off(dev);
3221         if (netif_running(dev)) {
3222                 nv_disable_irq(dev);
3223                 netif_tx_lock_bh(dev);
3224                 spin_lock(&np->lock);
3225                 /* stop engines */
3226                 nv_stop_rx(dev);
3227                 nv_stop_tx(dev);
3228                 spin_unlock(&np->lock);
3229                 netif_tx_unlock_bh(dev);
3230         }
3231
3232         if (ecmd->autoneg == AUTONEG_ENABLE) {
3233                 int adv, bmcr;
3234
3235                 np->autoneg = 1;
3236
3237                 /* advertise only what has been requested */
3238                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3239                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3240                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
3241                         adv |= ADVERTISE_10HALF;
3242                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
3243                         adv |= ADVERTISE_10FULL;
3244                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
3245                         adv |= ADVERTISE_100HALF;
3246                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
3247                         adv |= ADVERTISE_100FULL;
3248                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisments but disable tx pause */
3249                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3250                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3251                         adv |=  ADVERTISE_PAUSE_ASYM;
3252                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3253
3254                 if (np->gigabit == PHY_GIGABIT) {
3255                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3256                         adv &= ~ADVERTISE_1000FULL;
3257                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
3258                                 adv |= ADVERTISE_1000FULL;
3259                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
3260                 }
3261
3262                 if (netif_running(dev))
3263                         printk(KERN_INFO "%s: link down.\n", dev->name);
3264                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3265                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
3266                         bmcr |= BMCR_ANENABLE;
3267                         /* reset the phy in order for settings to stick,
3268                          * and cause autoneg to start */
3269                         if (phy_reset(dev, bmcr)) {
3270                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3271                                 return -EINVAL;
3272                         }
3273                 } else {
3274                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3275                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3276                 }
3277         } else {
3278                 int adv, bmcr;
3279
3280                 np->autoneg = 0;
3281
3282                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3283                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3284                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
3285                         adv |= ADVERTISE_10HALF;
3286                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
3287                         adv |= ADVERTISE_10FULL;
3288                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
3289                         adv |= ADVERTISE_100HALF;
3290                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
3291                         adv |= ADVERTISE_100FULL;
3292                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
3293                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
3294                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3295                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3296                 }
3297                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
3298                         adv |=  ADVERTISE_PAUSE_ASYM;
3299                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3300                 }
3301                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3302                 np->fixed_mode = adv;
3303
3304                 if (np->gigabit == PHY_GIGABIT) {
3305                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3306                         adv &= ~ADVERTISE_1000FULL;
3307                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
3308                 }
3309
3310                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3311                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
3312                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
3313                         bmcr |= BMCR_FULLDPLX;
3314                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
3315                         bmcr |= BMCR_SPEED100;
3316                 if (np->phy_oui == PHY_OUI_MARVELL) {
3317                         /* reset the phy in order for forced mode settings to stick */
3318                         if (phy_reset(dev, bmcr)) {
3319                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3320                                 return -EINVAL;
3321                         }
3322                 } else {
3323                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3324                         if (netif_running(dev)) {
3325                                 /* Wait a bit and then reconfigure the nic. */
3326                                 udelay(10);
3327                                 nv_linkchange(dev);
3328                         }
3329                 }
3330         }
3331
3332         if (netif_running(dev)) {
3333                 nv_start_rx(dev);
3334                 nv_start_tx(dev);
3335                 nv_enable_irq(dev);
3336         }
3337
3338         return 0;
3339 }
3340
3341 #define FORCEDETH_REGS_VER      1
3342
3343 static int nv_get_regs_len(struct net_device *dev)
3344 {
3345         struct fe_priv *np = netdev_priv(dev);
3346         return np->register_size;
3347 }
3348
3349 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
3350 {
3351         struct fe_priv *np = netdev_priv(dev);
3352         u8 __iomem *base = get_hwbase(dev);
3353         u32 *rbuf = buf;
3354         int i;
3355
3356         regs->version = FORCEDETH_REGS_VER;
3357         spin_lock_irq(&np->lock);
3358         for (i = 0;i <= np->register_size/sizeof(u32); i++)
3359                 rbuf[i] = readl(base + i*sizeof(u32));
3360         spin_unlock_irq(&np->lock);
3361 }
3362
3363 static int nv_nway_reset(struct net_device *dev)
3364 {
3365         struct fe_priv *np = netdev_priv(dev);
3366         int ret;
3367
3368         if (np->autoneg) {
3369                 int bmcr;
3370
3371                 netif_carrier_off(dev);
3372                 if (netif_running(dev)) {
3373                         nv_disable_irq(dev);
3374                         netif_tx_lock_bh(dev);
3375                         spin_lock(&np->lock);
3376                         /* stop engines */
3377                         nv_stop_rx(dev);
3378                         nv_stop_tx(dev);
3379                         spin_unlock(&np->lock);
3380                         netif_tx_unlock_bh(dev);
3381                         printk(KERN_INFO "%s: link down.\n", dev->name);
3382                 }
3383
3384                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3385                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
3386                         bmcr |= BMCR_ANENABLE;
3387                         /* reset the phy in order for settings to stick*/
3388                         if (phy_reset(dev, bmcr)) {
3389                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3390                                 return -EINVAL;
3391                         }
3392                 } else {
3393                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3394                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3395                 }
3396
3397                 if (netif_running(dev)) {
3398                         nv_start_rx(dev);
3399                         nv_start_tx(dev);
3400                         nv_enable_irq(dev);
3401                 }
3402                 ret = 0;
3403         } else {
3404                 ret = -EINVAL;
3405         }
3406
3407         return ret;
3408 }
3409
3410 static int nv_set_tso(struct net_device *dev, u32 value)
3411 {
3412         struct fe_priv *np = netdev_priv(dev);
3413
3414         if ((np->driver_data & DEV_HAS_CHECKSUM))
3415                 return ethtool_op_set_tso(dev, value);
3416         else
3417                 return -EOPNOTSUPP;
3418 }
3419
3420 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
3421 {
3422         struct fe_priv *np = netdev_priv(dev);
3423
3424         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
3425         ring->rx_mini_max_pending = 0;
3426         ring->rx_jumbo_max_pending = 0;
3427         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
3428
3429         ring->rx_pending = np->rx_ring_size;
3430         ring->rx_mini_pending = 0;
3431         ring->rx_jumbo_pending = 0;
3432         ring->tx_pending = np->tx_ring_size;
3433 }
3434
3435 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
3436 {
3437         struct fe_priv *np = netdev_priv(dev);
3438         u8 __iomem *base = get_hwbase(dev);
3439         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff, *rx_dma, *tx_dma, *tx_dma_len;
3440         dma_addr_t ring_addr;
3441
3442         if (ring->rx_pending < RX_RING_MIN ||
3443             ring->tx_pending < TX_RING_MIN ||
3444             ring->rx_mini_pending != 0 ||
3445             ring->rx_jumbo_pending != 0 ||
3446             (np->desc_ver == DESC_VER_1 &&
3447              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
3448               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
3449             (np->desc_ver != DESC_VER_1 &&
3450              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
3451               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
3452                 return -EINVAL;
3453         }
3454
3455         /* allocate new rings */
3456         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3457                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
3458                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
3459                                             &ring_addr);
3460         } else {
3461                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
3462                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
3463                                             &ring_addr);
3464         }
3465         rx_skbuff = kmalloc(sizeof(struct sk_buff*) * ring->rx_pending, GFP_KERNEL);
3466         rx_dma = kmalloc(sizeof(dma_addr_t) * ring->rx_pending, GFP_KERNEL);
3467         tx_skbuff = kmalloc(sizeof(struct sk_buff*) * ring->tx_pending, GFP_KERNEL);
3468         tx_dma = kmalloc(sizeof(dma_addr_t) * ring->tx_pending, GFP_KERNEL);
3469         tx_dma_len = kmalloc(sizeof(unsigned int) * ring->tx_pending, GFP_KERNEL);
3470         if (!rxtx_ring || !rx_skbuff || !rx_dma || !tx_skbuff || !tx_dma || !tx_dma_len) {
3471                 /* fall back to old rings */
3472                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3473                         if (rxtx_ring)
3474                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
3475                                                     rxtx_ring, ring_addr);
3476                 } else {
3477                         if (rxtx_ring)
3478                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
3479                                                     rxtx_ring, ring_addr);
3480                 }
3481                 if (rx_skbuff)
3482                         kfree(rx_skbuff);
3483                 if (rx_dma)
3484                         kfree(rx_dma);
3485                 if (tx_skbuff)
3486                         kfree(tx_skbuff);
3487                 if (tx_dma)
3488                         kfree(tx_dma);
3489                 if (tx_dma_len)
3490                         kfree(tx_dma_len);
3491                 goto exit;
3492         }
3493
3494         if (netif_running(dev)) {
3495                 nv_disable_irq(dev);
3496                 netif_tx_lock_bh(dev);
3497                 spin_lock(&np->lock);
3498                 /* stop engines */
3499                 nv_stop_rx(dev);
3500                 nv_stop_tx(dev);
3501                 nv_txrx_reset(dev);
3502                 /* drain queues */
3503                 nv_drain_rx(dev);
3504                 nv_drain_tx(dev);
3505                 /* delete queues */
3506                 free_rings(dev);
3507         }
3508
3509         /* set new values */
3510         np->rx_ring_size = ring->rx_pending;
3511         np->tx_ring_size = ring->tx_pending;
3512         np->tx_limit_stop = ring->tx_pending - TX_LIMIT_DIFFERENCE;
3513         np->tx_limit_start = ring->tx_pending - TX_LIMIT_DIFFERENCE - 1;
3514         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3515                 np->rx_ring.orig = (struct ring_desc*)rxtx_ring;
3516                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
3517         } else {
3518                 np->rx_ring.ex = (struct ring_desc_ex*)rxtx_ring;
3519                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
3520         }
3521         np->rx_skbuff = (struct sk_buff**)rx_skbuff;
3522         np->rx_dma = (dma_addr_t*)rx_dma;
3523         np->tx_skbuff = (struct sk_buff**)tx_skbuff;
3524         np->tx_dma = (dma_addr_t*)tx_dma;
3525         np->tx_dma_len = (unsigned int*)tx_dma_len;
3526         np->ring_addr = ring_addr;
3527
3528         memset(np->rx_skbuff, 0, sizeof(struct sk_buff*) * np->rx_ring_size);
3529         memset(np->rx_dma, 0, sizeof(dma_addr_t) * np->rx_ring_size);
3530         memset(np->tx_skbuff, 0, sizeof(struct sk_buff*) * np->tx_ring_size);
3531         memset(np->tx_dma, 0, sizeof(dma_addr_t) * np->tx_ring_size);
3532         memset(np->tx_dma_len, 0, sizeof(unsigned int) * np->tx_ring_size);
3533
3534         if (netif_running(dev)) {
3535                 /* reinit driver view of the queues */
3536                 set_bufsize(dev);
3537                 if (nv_init_ring(dev)) {
3538                         if (!np->in_shutdown)
3539                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3540                 }
3541
3542                 /* reinit nic view of the queues */
3543                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3544                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3545                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3546                         base + NvRegRingSizes);
3547                 pci_push(base);
3548                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3549                 pci_push(base);
3550
3551                 /* restart engines */
3552                 nv_start_rx(dev);
3553                 nv_start_tx(dev);
3554                 spin_unlock(&np->lock);
3555                 netif_tx_unlock_bh(dev);
3556                 nv_enable_irq(dev);
3557         }
3558         return 0;
3559 exit:
3560         return -ENOMEM;
3561 }
3562
3563 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
3564 {
3565         struct fe_priv *np = netdev_priv(dev);
3566
3567         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
3568         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
3569         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
3570 }
3571
3572 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
3573 {
3574         struct fe_priv *np = netdev_priv(dev);
3575         int adv, bmcr;
3576
3577         if ((!np->autoneg && np->duplex == 0) ||
3578             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
3579                 printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
3580                        dev->name);
3581                 return -EINVAL;
3582         }
3583         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
3584                 printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
3585                 return -EINVAL;
3586         }
3587
3588         netif_carrier_off(dev);
3589         if (netif_running(dev)) {
3590                 nv_disable_irq(dev);
3591                 netif_tx_lock_bh(dev);
3592                 spin_lock(&np->lock);
3593                 /* stop engines */
3594                 nv_stop_rx(dev);
3595                 nv_stop_tx(dev);
3596                 spin_unlock(&np->lock);
3597                 netif_tx_unlock_bh(dev);
3598         }
3599
3600         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
3601         if (pause->rx_pause)
3602                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
3603         if (pause->tx_pause)
3604                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
3605
3606         if (np->autoneg && pause->autoneg) {
3607                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
3608
3609                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3610                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3611                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
3612                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3613                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3614                         adv |=  ADVERTISE_PAUSE_ASYM;
3615                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3616
3617                 if (netif_running(dev))
3618                         printk(KERN_INFO "%s: link down.\n", dev->name);
3619                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3620                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3621                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3622         } else {
3623                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
3624                 if (pause->rx_pause)
3625                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3626                 if (pause->tx_pause)
3627                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3628
3629                 if (!netif_running(dev))
3630                         nv_update_linkspeed(dev);
3631                 else
3632                         nv_update_pause(dev, np->pause_flags);
3633         }
3634
3635         if (netif_running(dev)) {
3636                 nv_start_rx(dev);
3637                 nv_start_tx(dev);
3638                 nv_enable_irq(dev);
3639         }
3640         return 0;
3641 }
3642
3643 static u32 nv_get_rx_csum(struct net_device *dev)
3644 {
3645         struct fe_priv *np = netdev_priv(dev);
3646         return (np->rx_csum) != 0;
3647 }
3648
3649 static int nv_set_rx_csum(struct net_device *dev, u32 data)
3650 {
3651         struct fe_priv *np = netdev_priv(dev);
3652         u8 __iomem *base = get_hwbase(dev);
3653         int retcode = 0;
3654
3655         if (np->driver_data & DEV_HAS_CHECKSUM) {
3656                 if (data) {
3657                         np->rx_csum = 1;
3658                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
3659                 } else {
3660                         np->rx_csum = 0;
3661                         /* vlan is dependent on rx checksum offload */
3662                         if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
3663                                 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
3664                 }
3665                 if (netif_running(dev)) {
3666                         spin_lock_irq(&np->lock);
3667                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
3668                         spin_unlock_irq(&np->lock);
3669                 }
3670         } else {
3671                 return -EINVAL;
3672         }
3673
3674         return retcode;
3675 }
3676
3677 static int nv_set_tx_csum(struct net_device *dev, u32 data)
3678 {
3679         struct fe_priv *np = netdev_priv(dev);
3680
3681         if (np->driver_data & DEV_HAS_CHECKSUM)
3682                 return ethtool_op_set_tx_hw_csum(dev, data);
3683         else
3684                 return -EOPNOTSUPP;
3685 }
3686
3687 static int nv_set_sg(struct net_device *dev, u32 data)
3688 {
3689         struct fe_priv *np = netdev_priv(dev);
3690
3691         if (np->driver_data & DEV_HAS_CHECKSUM)
3692                 return ethtool_op_set_sg(dev, data);
3693         else
3694                 return -EOPNOTSUPP;
3695 }
3696
3697 static int nv_get_stats_count(struct net_device *dev)
3698 {
3699         struct fe_priv *np = netdev_priv(dev);
3700
3701         if (np->driver_data & DEV_HAS_STATISTICS)
3702                 return sizeof(struct nv_ethtool_stats)/sizeof(u64);
3703         else
3704                 return 0;
3705 }
3706
3707 static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
3708 {
3709         struct fe_priv *np = netdev_priv(dev);
3710
3711         /* update stats */
3712         nv_do_stats_poll((unsigned long)dev);
3713
3714         memcpy(buffer, &np->estats, nv_get_stats_count(dev)*sizeof(u64));
3715 }
3716
3717 static int nv_self_test_count(struct net_device *dev)
3718 {
3719         struct fe_priv *np = netdev_priv(dev);
3720
3721         if (np->driver_data & DEV_HAS_TEST_EXTENDED)
3722                 return NV_TEST_COUNT_EXTENDED;
3723         else
3724                 return NV_TEST_COUNT_BASE;
3725 }
3726
3727 static int nv_link_test(struct net_device *dev)
3728 {
3729         struct fe_priv *np = netdev_priv(dev);
3730         int mii_status;
3731
3732         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3733         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3734
3735         /* check phy link status */
3736         if (!(mii_status & BMSR_LSTATUS))
3737                 return 0;
3738         else
3739                 return 1;
3740 }
3741
3742 static int nv_register_test(struct net_device *dev)
3743 {
3744         u8 __iomem *base = get_hwbase(dev);
3745         int i = 0;
3746         u32 orig_read, new_read;
3747
3748         do {
3749                 orig_read = readl(base + nv_registers_test[i].reg);
3750
3751                 /* xor with mask to toggle bits */
3752                 orig_read ^= nv_registers_test[i].mask;
3753
3754                 writel(orig_read, base + nv_registers_test[i].reg);
3755
3756                 new_read = readl(base + nv_registers_test[i].reg);
3757
3758                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
3759                         return 0;
3760
3761                 /* restore original value */
3762                 orig_read ^= nv_registers_test[i].mask;
3763                 writel(orig_read, base + nv_registers_test[i].reg);
3764
3765         } while (nv_registers_test[++i].reg != 0);
3766
3767         return 1;
3768 }
3769
3770 static int nv_interrupt_test(struct net_device *dev)
3771 {
3772         struct fe_priv *np = netdev_priv(dev);
3773         u8 __iomem *base = get_hwbase(dev);
3774         int ret = 1;
3775         int testcnt;
3776         u32 save_msi_flags, save_poll_interval = 0;
3777
3778         if (netif_running(dev)) {
3779                 /* free current irq */
3780                 nv_free_irq(dev);
3781                 save_poll_interval = readl(base+NvRegPollingInterval);
3782         }
3783
3784         /* flag to test interrupt handler */
3785         np->intr_test = 0;
3786
3787         /* setup test irq */
3788         save_msi_flags = np->msi_flags;
3789         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
3790         np->msi_flags |= 0x001; /* setup 1 vector */
3791         if (nv_request_irq(dev, 1))
3792                 return 0;
3793
3794         /* setup timer interrupt */
3795         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
3796         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
3797
3798         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
3799
3800         /* wait for at least one interrupt */
3801         msleep(100);
3802
3803         spin_lock_irq(&np->lock);
3804
3805         /* flag should be set within ISR */
3806         testcnt = np->intr_test;
3807         if (!testcnt)
3808                 ret = 2;
3809
3810         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
3811         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3812                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3813         else
3814                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3815
3816         spin_unlock_irq(&np->lock);
3817
3818         nv_free_irq(dev);
3819
3820         np->msi_flags = save_msi_flags;
3821
3822         if (netif_running(dev)) {
3823                 writel(save_poll_interval, base + NvRegPollingInterval);
3824                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
3825                 /* restore original irq */
3826                 if (nv_request_irq(dev, 0))
3827                         return 0;
3828         }
3829
3830         return ret;
3831 }
3832
3833 static int nv_loopback_test(struct net_device *dev)
3834 {
3835         struct fe_priv *np = netdev_priv(dev);
3836         u8 __iomem *base = get_hwbase(dev);
3837         struct sk_buff *tx_skb, *rx_skb;
3838         dma_addr_t test_dma_addr;
3839         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
3840         u32 flags;
3841         int len, i, pkt_len;
3842         u8 *pkt_data;
3843         u32 filter_flags = 0;
3844         u32 misc1_flags = 0;
3845         int ret = 1;
3846
3847         if (netif_running(dev)) {
3848                 nv_disable_irq(dev);
3849                 filter_flags = readl(base + NvRegPacketFilterFlags);
3850                 misc1_flags = readl(base + NvRegMisc1);
3851         } else {
3852                 nv_txrx_reset(dev);
3853         }
3854
3855         /* reinit driver view of the rx queue */
3856         set_bufsize(dev);
3857         nv_init_ring(dev);
3858
3859         /* setup hardware for loopback */
3860         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
3861         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
3862
3863         /* reinit nic view of the rx queue */
3864         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3865         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3866         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3867                 base + NvRegRingSizes);
3868         pci_push(base);
3869
3870         /* restart rx engine */
3871         nv_start_rx(dev);
3872         nv_start_tx(dev);
3873
3874         /* setup packet for tx */
3875         pkt_len = ETH_DATA_LEN;
3876         tx_skb = dev_alloc_skb(pkt_len);
3877         if (!tx_skb) {
3878                 printk(KERN_ERR "dev_alloc_skb() failed during loopback test"
3879                          " of %s\n", dev->name);
3880                 ret = 0;
3881                 goto out;
3882         }
3883         pkt_data = skb_put(tx_skb, pkt_len);
3884         for (i = 0; i < pkt_len; i++)
3885                 pkt_data[i] = (u8)(i & 0xff);
3886         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
3887                                        tx_skb->end-tx_skb->data, PCI_DMA_FROMDEVICE);
3888
3889         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3890                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
3891                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
3892         } else {
3893                 np->tx_ring.ex[0].bufhigh = cpu_to_le64(test_dma_addr) >> 32;
3894                 np->tx_ring.ex[0].buflow = cpu_to_le64(test_dma_addr) & 0x0FFFFFFFF;
3895                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
3896         }
3897         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3898         pci_push(get_hwbase(dev));
3899
3900         msleep(500);
3901
3902         /* check for rx of the packet */
3903         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3904                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
3905                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
3906
3907         } else {
3908                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
3909                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
3910         }
3911
3912         if (flags & NV_RX_AVAIL) {
3913                 ret = 0;
3914         } else if (np->desc_ver == DESC_VER_1) {
3915                 if (flags & NV_RX_ERROR)
3916                         ret = 0;
3917         } else {
3918                 if (flags & NV_RX2_ERROR) {
3919                         ret = 0;
3920                 }
3921         }
3922
3923         if (ret) {
3924                 if (len != pkt_len) {
3925                         ret = 0;
3926                         dprintk(KERN_DEBUG "%s: loopback len mismatch %d vs %d\n",
3927                                 dev->name, len, pkt_len);
3928                 } else {
3929                         rx_skb = np->rx_skbuff[0];
3930                         for (i = 0; i < pkt_len; i++) {
3931                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
3932                                         ret = 0;
3933                                         dprintk(KERN_DEBUG "%s: loopback pattern check failed on byte %d\n",
3934                                                 dev->name, i);
3935                                         break;
3936                                 }
3937                         }
3938                 }
3939         } else {
3940                 dprintk(KERN_DEBUG "%s: loopback - did not receive test packet\n", dev->name);
3941         }
3942
3943         pci_unmap_page(np->pci_dev, test_dma_addr,
3944                        tx_skb->end-tx_skb->data,
3945                        PCI_DMA_TODEVICE);
3946         dev_kfree_skb_any(tx_skb);
3947  out:
3948         /* stop engines */
3949         nv_stop_rx(dev);
3950         nv_stop_tx(dev);
3951         nv_txrx_reset(dev);
3952         /* drain rx queue */
3953         nv_drain_rx(dev);
3954         nv_drain_tx(dev);
3955
3956         if (netif_running(dev)) {
3957                 writel(misc1_flags, base + NvRegMisc1);
3958                 writel(filter_flags, base + NvRegPacketFilterFlags);
3959                 nv_enable_irq(dev);
3960         }
3961
3962         return ret;
3963 }
3964
3965 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
3966 {
3967         struct fe_priv *np = netdev_priv(dev);
3968         u8 __iomem *base = get_hwbase(dev);
3969         int result;
3970         memset(buffer, 0, nv_self_test_count(dev)*sizeof(u64));
3971
3972         if (!nv_link_test(dev)) {
3973                 test->flags |= ETH_TEST_FL_FAILED;
3974                 buffer[0] = 1;
3975         }
3976
3977         if (test->flags & ETH_TEST_FL_OFFLINE) {
3978                 if (netif_running(dev)) {
3979                         netif_stop_queue(dev);
3980                         netif_poll_disable(dev);
3981                         netif_tx_lock_bh(dev);
3982                         spin_lock_irq(&np->lock);
3983                         nv_disable_hw_interrupts(dev, np->irqmask);
3984                         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3985                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3986                         } else {
3987                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3988                         }
3989                         /* stop engines */
3990                         nv_stop_rx(dev);
3991                         nv_stop_tx(dev);
3992                         nv_txrx_reset(dev);
3993                         /* drain rx queue */
3994                         nv_drain_rx(dev);
3995                         nv_drain_tx(dev);
3996                         spin_unlock_irq(&np->lock);
3997                         netif_tx_unlock_bh(dev);
3998                 }
3999
4000                 if (!nv_register_test(dev)) {
4001                         test->flags |= ETH_TEST_FL_FAILED;
4002                         buffer[1] = 1;
4003                 }
4004
4005                 result = nv_interrupt_test(dev);
4006                 if (result != 1) {
4007                         test->flags |= ETH_TEST_FL_FAILED;
4008                         buffer[2] = 1;
4009                 }
4010                 if (result == 0) {
4011                         /* bail out */
4012                         return;
4013                 }
4014
4015                 if (!nv_loopback_test(dev)) {
4016                         test->flags |= ETH_TEST_FL_FAILED;
4017                         buffer[3] = 1;
4018                 }
4019
4020                 if (netif_running(dev)) {
4021                         /* reinit driver view of the rx queue */
4022                         set_bufsize(dev);
4023                         if (nv_init_ring(dev)) {
4024                                 if (!np->in_shutdown)
4025                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4026                         }
4027                         /* reinit nic view of the rx queue */
4028                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4029                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4030                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4031                                 base + NvRegRingSizes);
4032                         pci_push(base);
4033                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4034                         pci_push(base);
4035                         /* restart rx engine */
4036                         nv_start_rx(dev);
4037                         nv_start_tx(dev);
4038                         netif_start_queue(dev);
4039                         netif_poll_enable(dev);
4040                         nv_enable_hw_interrupts(dev, np->irqmask);
4041                 }
4042         }
4043 }
4044
4045 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
4046 {
4047         switch (stringset) {
4048         case ETH_SS_STATS:
4049                 memcpy(buffer, &nv_estats_str, nv_get_stats_count(dev)*sizeof(struct nv_ethtool_str));
4050                 break;
4051         case ETH_SS_TEST:
4052                 memcpy(buffer, &nv_etests_str, nv_self_test_count(dev)*sizeof(struct nv_ethtool_str));
4053                 break;
4054         }
4055 }
4056
4057 static const struct ethtool_ops ops = {
4058         .get_drvinfo = nv_get_drvinfo,
4059         .get_link = ethtool_op_get_link,
4060         .get_wol = nv_get_wol,
4061         .set_wol = nv_set_wol,
4062         .get_settings = nv_get_settings,
4063         .set_settings = nv_set_settings,
4064         .get_regs_len = nv_get_regs_len,
4065         .get_regs = nv_get_regs,
4066         .nway_reset = nv_nway_reset,
4067         .get_perm_addr = ethtool_op_get_perm_addr,
4068         .get_tso = ethtool_op_get_tso,
4069         .set_tso = nv_set_tso,
4070         .get_ringparam = nv_get_ringparam,
4071         .set_ringparam = nv_set_ringparam,
4072         .get_pauseparam = nv_get_pauseparam,
4073         .set_pauseparam = nv_set_pauseparam,
4074         .get_rx_csum = nv_get_rx_csum,
4075         .set_rx_csum = nv_set_rx_csum,
4076         .get_tx_csum = ethtool_op_get_tx_csum,
4077         .set_tx_csum = nv_set_tx_csum,
4078         .get_sg = ethtool_op_get_sg,
4079         .set_sg = nv_set_sg,
4080         .get_strings = nv_get_strings,
4081         .get_stats_count = nv_get_stats_count,
4082         .get_ethtool_stats = nv_get_ethtool_stats,
4083         .self_test_count = nv_self_test_count,
4084         .self_test = nv_self_test,
4085 };
4086
4087 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
4088 {
4089         struct fe_priv *np = get_nvpriv(dev);
4090
4091         spin_lock_irq(&np->lock);
4092
4093         /* save vlan group */
4094         np->vlangrp = grp;
4095
4096         if (grp) {
4097                 /* enable vlan on MAC */
4098                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
4099         } else {
4100                 /* disable vlan on MAC */
4101                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4102                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4103         }
4104
4105         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4106
4107         spin_unlock_irq(&np->lock);
4108 };
4109
4110 static void nv_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
4111 {
4112         /* nothing to do */
4113 };
4114
4115 /* The mgmt unit and driver use a semaphore to access the phy during init */
4116 static int nv_mgmt_acquire_sema(struct net_device *dev)
4117 {
4118         u8 __iomem *base = get_hwbase(dev);
4119         int i;
4120         u32 tx_ctrl, mgmt_sema;
4121
4122         for (i = 0; i < 10; i++) {
4123                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
4124                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
4125                         break;
4126                 msleep(500);
4127         }
4128
4129         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
4130                 return 0;
4131
4132         for (i = 0; i < 2; i++) {
4133                 tx_ctrl = readl(base + NvRegTransmitterControl);
4134                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
4135                 writel(tx_ctrl, base + NvRegTransmitterControl);
4136
4137                 /* verify that semaphore was acquired */
4138                 tx_ctrl = readl(base + NvRegTransmitterControl);
4139                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
4140                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE))
4141                         return 1;
4142                 else
4143                         udelay(50);
4144         }
4145
4146         return 0;
4147 }
4148
4149 /* Indicate to mgmt unit whether driver is loaded or not */
4150 static void nv_mgmt_driver_loaded(struct net_device *dev, int loaded)
4151 {
4152         u8 __iomem *base = get_hwbase(dev);
4153         u32 tx_ctrl;
4154
4155         tx_ctrl = readl(base + NvRegTransmitterControl);
4156         if (loaded)
4157                 tx_ctrl |= NVREG_XMITCTL_HOST_LOADED;
4158         else
4159                 tx_ctrl &= ~NVREG_XMITCTL_HOST_LOADED;
4160         writel(tx_ctrl, base + NvRegTransmitterControl);
4161 }
4162
4163 static int nv_open(struct net_device *dev)
4164 {
4165         struct fe_priv *np = netdev_priv(dev);
4166         u8 __iomem *base = get_hwbase(dev);
4167         int ret = 1;
4168         int oom, i;
4169
4170         dprintk(KERN_DEBUG "nv_open: begin\n");
4171
4172         /* erase previous misconfiguration */
4173         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4174                 nv_mac_reset(dev);
4175         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4176         writel(0, base + NvRegMulticastAddrB);
4177         writel(0, base + NvRegMulticastMaskA);
4178         writel(0, base + NvRegMulticastMaskB);
4179         writel(0, base + NvRegPacketFilterFlags);
4180
4181         writel(0, base + NvRegTransmitterControl);
4182         writel(0, base + NvRegReceiverControl);
4183
4184         writel(0, base + NvRegAdapterControl);
4185
4186         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
4187                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
4188
4189         /* initialize descriptor rings */
4190         set_bufsize(dev);
4191         oom = nv_init_ring(dev);
4192
4193         writel(0, base + NvRegLinkSpeed);
4194         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
4195         nv_txrx_reset(dev);
4196         writel(0, base + NvRegUnknownSetupReg6);
4197
4198         np->in_shutdown = 0;
4199
4200         /* give hw rings */
4201         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4202         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4203                 base + NvRegRingSizes);
4204
4205         writel(np->linkspeed, base + NvRegLinkSpeed);
4206         if (np->desc_ver == DESC_VER_1)
4207                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
4208         else
4209                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
4210         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4211         writel(np->vlanctl_bits, base + NvRegVlanControl);
4212         pci_push(base);
4213         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
4214         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
4215                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
4216                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
4217
4218         writel(0, base + NvRegMIIMask);
4219         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4220         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
4221
4222         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
4223         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
4224         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
4225         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4226
4227         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
4228         get_random_bytes(&i, sizeof(i));
4229         writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
4230         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
4231         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
4232         if (poll_interval == -1) {
4233                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
4234                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
4235                 else
4236                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4237         }
4238         else
4239                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
4240         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4241         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
4242                         base + NvRegAdapterControl);
4243         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
4244         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
4245         if (np->wolenabled)
4246                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
4247
4248         i = readl(base + NvRegPowerState);
4249         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
4250                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
4251
4252         pci_push(base);
4253         udelay(10);
4254         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
4255
4256         nv_disable_hw_interrupts(dev, np->irqmask);
4257         pci_push(base);
4258         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
4259         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4260         pci_push(base);
4261
4262         if (nv_request_irq(dev, 0)) {
4263                 goto out_drain;
4264         }
4265
4266         /* ask for interrupts */
4267         nv_enable_hw_interrupts(dev, np->irqmask);
4268
4269         spin_lock_irq(&np->lock);
4270         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4271         writel(0, base + NvRegMulticastAddrB);
4272         writel(0, base + NvRegMulticastMaskA);
4273         writel(0, base + NvRegMulticastMaskB);
4274         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
4275         /* One manual link speed update: Interrupts are enabled, future link
4276          * speed changes cause interrupts and are handled by nv_link_irq().
4277          */
4278         {
4279                 u32 miistat;
4280                 miistat = readl(base + NvRegMIIStatus);
4281                 writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
4282                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
4283         }
4284         /* set linkspeed to invalid value, thus force nv_update_linkspeed
4285          * to init hw */
4286         np->linkspeed = 0;
4287         ret = nv_update_linkspeed(dev);
4288         nv_start_rx(dev);
4289         nv_start_tx(dev);
4290         netif_start_queue(dev);
4291         netif_poll_enable(dev);
4292
4293         if (ret) {
4294                 netif_carrier_on(dev);
4295         } else {
4296                 printk("%s: no link during initialization.\n", dev->name);
4297                 netif_carrier_off(dev);
4298         }
4299         if (oom)
4300                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4301
4302         /* start statistics timer */
4303         if (np->driver_data & DEV_HAS_STATISTICS)
4304                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
4305
4306         spin_unlock_irq(&np->lock);
4307
4308         return 0;
4309 out_drain:
4310         drain_ring(dev);
4311         return ret;
4312 }
4313
4314 static int nv_close(struct net_device *dev)
4315 {
4316         struct fe_priv *np = netdev_priv(dev);
4317         u8 __iomem *base;
4318
4319         spin_lock_irq(&np->lock);
4320         np->in_shutdown = 1;
4321         spin_unlock_irq(&np->lock);
4322         netif_poll_disable(dev);
4323         synchronize_irq(dev->irq);
4324
4325         del_timer_sync(&np->oom_kick);
4326         del_timer_sync(&np->nic_poll);
4327         del_timer_sync(&np->stats_poll);
4328
4329         netif_stop_queue(dev);
4330         spin_lock_irq(&np->lock);
4331         nv_stop_tx(dev);
4332         nv_stop_rx(dev);
4333         nv_txrx_reset(dev);
4334
4335         /* disable interrupts on the nic or we will lock up */
4336         base = get_hwbase(dev);
4337         nv_disable_hw_interrupts(dev, np->irqmask);
4338         pci_push(base);
4339         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
4340
4341         spin_unlock_irq(&np->lock);
4342
4343         nv_free_irq(dev);
4344
4345         drain_ring(dev);
4346
4347         if (np->wolenabled)
4348                 nv_start_rx(dev);
4349
4350         /* FIXME: power down nic */
4351
4352         return 0;
4353 }
4354
4355 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
4356 {
4357         struct net_device *dev;
4358         struct fe_priv *np;
4359         unsigned long addr;
4360         u8 __iomem *base;
4361         int err, i;
4362         u32 powerstate, txreg;
4363         u32 phystate_orig = 0, phystate;
4364         int phyinitialized = 0;
4365
4366         dev = alloc_etherdev(sizeof(struct fe_priv));
4367         err = -ENOMEM;
4368         if (!dev)
4369                 goto out;
4370
4371         np = netdev_priv(dev);
4372         np->pci_dev = pci_dev;
4373         spin_lock_init(&np->lock);
4374         SET_MODULE_OWNER(dev);
4375         SET_NETDEV_DEV(dev, &pci_dev->dev);
4376
4377         init_timer(&np->oom_kick);
4378         np->oom_kick.data = (unsigned long) dev;
4379         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
4380         init_timer(&np->nic_poll);
4381         np->nic_poll.data = (unsigned long) dev;
4382         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
4383         init_timer(&np->stats_poll);
4384         np->stats_poll.data = (unsigned long) dev;
4385         np->stats_poll.function = &nv_do_stats_poll;    /* timer handler */
4386
4387         err = pci_enable_device(pci_dev);
4388         if (err) {
4389                 printk(KERN_INFO "forcedeth: pci_enable_dev failed (%d) for device %s\n",
4390                                 err, pci_name(pci_dev));
4391                 goto out_free;
4392         }
4393
4394         pci_set_master(pci_dev);
4395
4396         err = pci_request_regions(pci_dev, DRV_NAME);
4397         if (err < 0)
4398                 goto out_disable;
4399
4400         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS))
4401                 np->register_size = NV_PCI_REGSZ_VER2;
4402         else
4403                 np->register_size = NV_PCI_REGSZ_VER1;
4404
4405         err = -EINVAL;
4406         addr = 0;
4407         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
4408                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
4409                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
4410                                 pci_resource_len(pci_dev, i),
4411                                 pci_resource_flags(pci_dev, i));
4412                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
4413                                 pci_resource_len(pci_dev, i) >= np->register_size) {
4414                         addr = pci_resource_start(pci_dev, i);
4415                         break;
4416                 }
4417         }
4418         if (i == DEVICE_COUNT_RESOURCE) {
4419                 printk(KERN_INFO "forcedeth: Couldn't find register window for device %s.\n",
4420                                         pci_name(pci_dev));
4421                 goto out_relreg;
4422         }
4423
4424         /* copy of driver data */
4425         np->driver_data = id->driver_data;
4426
4427         /* handle different descriptor versions */
4428         if (id->driver_data & DEV_HAS_HIGH_DMA) {
4429                 /* packet format 3: supports 40-bit addressing */
4430                 np->desc_ver = DESC_VER_3;
4431                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
4432                 if (dma_64bit) {
4433                         if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
4434                                 printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
4435                                        pci_name(pci_dev));
4436                         } else {
4437                                 dev->features |= NETIF_F_HIGHDMA;
4438                                 printk(KERN_INFO "forcedeth: using HIGHDMA\n");
4439                         }
4440                         if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
4441                                 printk(KERN_INFO "forcedeth: 64-bit DMA (consistent) failed, using 32-bit ring buffers for device %s.\n",
4442                                        pci_name(pci_dev));
4443                         }
4444                 }
4445         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
4446                 /* packet format 2: supports jumbo frames */
4447                 np->desc_ver = DESC_VER_2;
4448                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
4449         } else {
4450                 /* original packet format */
4451                 np->desc_ver = DESC_VER_1;
4452                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
4453         }
4454
4455         np->pkt_limit = NV_PKTLIMIT_1;
4456         if (id->driver_data & DEV_HAS_LARGEDESC)
4457                 np->pkt_limit = NV_PKTLIMIT_2;
4458
4459         if (id->driver_data & DEV_HAS_CHECKSUM) {
4460                 np->rx_csum = 1;
4461                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4462                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
4463 #ifdef NETIF_F_TSO
4464                 dev->features |= NETIF_F_TSO;
4465 #endif
4466         }
4467
4468         np->vlanctl_bits = 0;
4469         if (id->driver_data & DEV_HAS_VLAN) {
4470                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
4471                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
4472                 dev->vlan_rx_register = nv_vlan_rx_register;
4473                 dev->vlan_rx_kill_vid = nv_vlan_rx_kill_vid;
4474         }
4475
4476         np->msi_flags = 0;
4477         if ((id->driver_data & DEV_HAS_MSI) && msi) {
4478                 np->msi_flags |= NV_MSI_CAPABLE;
4479         }
4480         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
4481                 np->msi_flags |= NV_MSI_X_CAPABLE;
4482         }
4483
4484         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
4485         if (id->driver_data & DEV_HAS_PAUSEFRAME_TX) {
4486                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
4487         }
4488
4489
4490         err = -ENOMEM;
4491         np->base = ioremap(addr, np->register_size);
4492         if (!np->base)
4493                 goto out_relreg;
4494         dev->base_addr = (unsigned long)np->base;
4495
4496         dev->irq = pci_dev->irq;
4497
4498         np->rx_ring_size = RX_RING_DEFAULT;
4499         np->tx_ring_size = TX_RING_DEFAULT;
4500         np->tx_limit_stop = np->tx_ring_size - TX_LIMIT_DIFFERENCE;
4501         np->tx_limit_start = np->tx_ring_size - TX_LIMIT_DIFFERENCE - 1;
4502
4503         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4504                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
4505                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
4506                                         &np->ring_addr);
4507                 if (!np->rx_ring.orig)
4508                         goto out_unmap;
4509                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4510         } else {
4511                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
4512                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
4513                                         &np->ring_addr);
4514                 if (!np->rx_ring.ex)
4515                         goto out_unmap;
4516                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4517         }
4518         np->rx_skbuff = kmalloc(sizeof(struct sk_buff*) * np->rx_ring_size, GFP_KERNEL);
4519         np->rx_dma = kmalloc(sizeof(dma_addr_t) * np->rx_ring_size, GFP_KERNEL);
4520         np->tx_skbuff = kmalloc(sizeof(struct sk_buff*) * np->tx_ring_size, GFP_KERNEL);
4521         np->tx_dma = kmalloc(sizeof(dma_addr_t) * np->tx_ring_size, GFP_KERNEL);
4522         np->tx_dma_len = kmalloc(sizeof(unsigned int) * np->tx_ring_size, GFP_KERNEL);
4523         if (!np->rx_skbuff || !np->rx_dma || !np->tx_skbuff || !np->tx_dma || !np->tx_dma_len)
4524                 goto out_freering;
4525         memset(np->rx_skbuff, 0, sizeof(struct sk_buff*) * np->rx_ring_size);
4526         memset(np->rx_dma, 0, sizeof(dma_addr_t) * np->rx_ring_size);
4527         memset(np->tx_skbuff, 0, sizeof(struct sk_buff*) * np->tx_ring_size);
4528         memset(np->tx_dma, 0, sizeof(dma_addr_t) * np->tx_ring_size);
4529         memset(np->tx_dma_len, 0, sizeof(unsigned int) * np->tx_ring_size);
4530
4531         dev->open = nv_open;
4532         dev->stop = nv_close;
4533         dev->hard_start_xmit = nv_start_xmit;
4534         dev->get_stats = nv_get_stats;
4535         dev->change_mtu = nv_change_mtu;
4536         dev->set_mac_address = nv_set_mac_address;
4537         dev->set_multicast_list = nv_set_multicast;
4538 #ifdef CONFIG_NET_POLL_CONTROLLER
4539         dev->poll_controller = nv_poll_controller;
4540 #endif
4541         dev->weight = 64;
4542 #ifdef CONFIG_FORCEDETH_NAPI
4543         dev->poll = nv_napi_poll;
4544 #endif
4545         SET_ETHTOOL_OPS(dev, &ops);
4546         dev->tx_timeout = nv_tx_timeout;
4547         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
4548
4549         pci_set_drvdata(pci_dev, dev);
4550
4551         /* read the mac address */
4552         base = get_hwbase(dev);
4553         np->orig_mac[0] = readl(base + NvRegMacAddrA);
4554         np->orig_mac[1] = readl(base + NvRegMacAddrB);
4555
4556         /* check the workaround bit for correct mac address order */
4557         txreg = readl(base + NvRegTransmitPoll);
4558         if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
4559                 /* mac address is already in correct order */
4560                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
4561                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
4562                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
4563                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
4564                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
4565                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
4566         } else {
4567                 /* need to reverse mac address to correct order */
4568                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
4569                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
4570                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
4571                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
4572                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
4573                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
4574                 /* set permanent address to be correct aswell */
4575                 np->orig_mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
4576                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
4577                 np->orig_mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
4578                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
4579         }
4580         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4581
4582         if (!is_valid_ether_addr(dev->perm_addr)) {
4583                 /*
4584                  * Bad mac address. At least one bios sets the mac address
4585                  * to 01:23:45:67:89:ab
4586                  */
4587                 printk(KERN_ERR "%s: Invalid Mac address detected: %02x:%02x:%02x:%02x:%02x:%02x\n",
4588                         pci_name(pci_dev),
4589                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
4590                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
4591                 printk(KERN_ERR "Please complain to your hardware vendor. Switching to a random MAC.\n");
4592                 dev->dev_addr[0] = 0x00;
4593                 dev->dev_addr[1] = 0x00;
4594                 dev->dev_addr[2] = 0x6c;
4595                 get_random_bytes(&dev->dev_addr[3], 3);
4596         }
4597
4598         dprintk(KERN_DEBUG "%s: MAC Address %02x:%02x:%02x:%02x:%02x:%02x\n", pci_name(pci_dev),
4599                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
4600                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
4601
4602         /* set mac address */
4603         nv_copy_mac_to_hw(dev);
4604
4605         /* disable WOL */
4606         writel(0, base + NvRegWakeUpFlags);
4607         np->wolenabled = 0;
4608
4609         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
4610                 u8 revision_id;
4611                 pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id);
4612
4613                 /* take phy and nic out of low power mode */
4614                 powerstate = readl(base + NvRegPowerState2);
4615                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
4616                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
4617                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
4618                     revision_id >= 0xA3)
4619                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
4620                 writel(powerstate, base + NvRegPowerState2);
4621         }
4622
4623         if (np->desc_ver == DESC_VER_1) {
4624                 np->tx_flags = NV_TX_VALID;
4625         } else {
4626                 np->tx_flags = NV_TX2_VALID;
4627         }
4628         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
4629                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
4630                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
4631                         np->msi_flags |= 0x0003;
4632         } else {
4633                 np->irqmask = NVREG_IRQMASK_CPU;
4634                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
4635                         np->msi_flags |= 0x0001;
4636         }
4637
4638         if (id->driver_data & DEV_NEED_TIMERIRQ)
4639                 np->irqmask |= NVREG_IRQ_TIMER;
4640         if (id->driver_data & DEV_NEED_LINKTIMER) {
4641                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
4642                 np->need_linktimer = 1;
4643                 np->link_timeout = jiffies + LINK_TIMEOUT;
4644         } else {
4645                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
4646                 np->need_linktimer = 0;
4647         }
4648
4649         /* clear phy state and temporarily halt phy interrupts */
4650         writel(0, base + NvRegMIIMask);
4651         phystate = readl(base + NvRegAdapterControl);
4652         if (phystate & NVREG_ADAPTCTL_RUNNING) {
4653                 phystate_orig = 1;
4654                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
4655                 writel(phystate, base + NvRegAdapterControl);
4656         }
4657         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
4658
4659         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
4660                 writel(0x1, base + 0x204); pci_push(base);
4661                 msleep(500);
4662                 /* management unit running on the mac? */
4663                 np->mac_in_use = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST;
4664                 if (np->mac_in_use) {
4665                         u32 mgmt_sync;
4666                         /* management unit setup the phy already? */
4667                         mgmt_sync = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK;
4668                         if (mgmt_sync == NVREG_XMITCTL_SYNC_NOT_READY) {
4669                                 if (!nv_mgmt_acquire_sema(dev)) {
4670                                         for (i = 0; i < 5000; i++) {
4671                                                 msleep(1);
4672                                                 mgmt_sync = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK;
4673                                                 if (mgmt_sync == NVREG_XMITCTL_SYNC_NOT_READY)
4674                                                         continue;
4675                                                 if (mgmt_sync == NVREG_XMITCTL_SYNC_PHY_INIT)
4676                                                         phyinitialized = 1;
4677                                                 break;
4678                                         }
4679                                 } else {
4680                                         /* we need to init the phy */
4681                                 }
4682                         } else if (mgmt_sync == NVREG_XMITCTL_SYNC_PHY_INIT) {
4683                                 /* phy is inited by SMU */
4684                                 phyinitialized = 1;
4685                         } else {
4686                                 /* we need to init the phy */
4687                         }
4688                 }
4689         }
4690
4691         /* find a suitable phy */
4692         for (i = 1; i <= 32; i++) {
4693                 int id1, id2;
4694                 int phyaddr = i & 0x1F;
4695
4696                 spin_lock_irq(&np->lock);
4697                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
4698                 spin_unlock_irq(&np->lock);
4699                 if (id1 < 0 || id1 == 0xffff)
4700                         continue;
4701                 spin_lock_irq(&np->lock);
4702                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
4703                 spin_unlock_irq(&np->lock);
4704                 if (id2 < 0 || id2 == 0xffff)
4705                         continue;
4706
4707                 np->phy_model = id2 & PHYID2_MODEL_MASK;
4708                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
4709                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
4710                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
4711                         pci_name(pci_dev), id1, id2, phyaddr);
4712                 np->phyaddr = phyaddr;
4713                 np->phy_oui = id1 | id2;
4714                 break;
4715         }
4716         if (i == 33) {
4717                 printk(KERN_INFO "%s: open: Could not find a valid PHY.\n",
4718                        pci_name(pci_dev));
4719                 goto out_error;
4720         }
4721
4722         if (!phyinitialized) {
4723                 /* reset it */
4724                 phy_init(dev);
4725         }
4726
4727         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
4728                 nv_mgmt_driver_loaded(dev, 1);
4729         }
4730
4731         /* set default link speed settings */
4732         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
4733         np->duplex = 0;
4734         np->autoneg = 1;
4735
4736         err = register_netdev(dev);
4737         if (err) {
4738                 printk(KERN_INFO "forcedeth: unable to register netdev: %d\n", err);
4739                 goto out_error;
4740         }
4741         printk(KERN_INFO "%s: forcedeth.c: subsystem: %05x:%04x bound to %s\n",
4742                         dev->name, pci_dev->subsystem_vendor, pci_dev->subsystem_device,
4743                         pci_name(pci_dev));
4744
4745         return 0;
4746
4747 out_error:
4748         if (phystate_orig)
4749                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
4750         if (np->mac_in_use)
4751                 nv_mgmt_driver_loaded(dev, 0);
4752         pci_set_drvdata(pci_dev, NULL);
4753 out_freering:
4754         free_rings(dev);
4755 out_unmap:
4756         iounmap(get_hwbase(dev));
4757 out_relreg:
4758         pci_release_regions(pci_dev);
4759 out_disable:
4760         pci_disable_device(pci_dev);
4761 out_free:
4762         free_netdev(dev);
4763 out:
4764         return err;
4765 }
4766
4767 static void __devexit nv_remove(struct pci_dev *pci_dev)
4768 {
4769         struct net_device *dev = pci_get_drvdata(pci_dev);
4770         struct fe_priv *np = netdev_priv(dev);
4771         u8 __iomem *base = get_hwbase(dev);
4772
4773         unregister_netdev(dev);
4774
4775         /* special op: write back the misordered MAC address - otherwise
4776          * the next nv_probe would see a wrong address.
4777          */
4778         writel(np->orig_mac[0], base + NvRegMacAddrA);
4779         writel(np->orig_mac[1], base + NvRegMacAddrB);
4780
4781         if (np->mac_in_use)
4782                 nv_mgmt_driver_loaded(dev, 0);
4783
4784         /* free all structures */
4785         free_rings(dev);
4786         iounmap(get_hwbase(dev));
4787         pci_release_regions(pci_dev);
4788         pci_disable_device(pci_dev);
4789         free_netdev(dev);
4790         pci_set_drvdata(pci_dev, NULL);
4791 }
4792
4793 #ifdef CONFIG_PM
4794 static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
4795 {
4796         struct net_device *dev = pci_get_drvdata(pdev);
4797         struct fe_priv *np = netdev_priv(dev);
4798
4799         if (!netif_running(dev))
4800                 goto out;
4801
4802         netif_device_detach(dev);
4803
4804         // Gross.
4805         nv_close(dev);
4806
4807         pci_save_state(pdev);
4808         pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
4809         pci_set_power_state(pdev, pci_choose_state(pdev, state));
4810 out:
4811         return 0;
4812 }
4813
4814 static int nv_resume(struct pci_dev *pdev)
4815 {
4816         struct net_device *dev = pci_get_drvdata(pdev);
4817         int rc = 0;
4818
4819         if (!netif_running(dev))
4820                 goto out;
4821
4822         netif_device_attach(dev);
4823
4824         pci_set_power_state(pdev, PCI_D0);
4825         pci_restore_state(pdev);
4826         pci_enable_wake(pdev, PCI_D0, 0);
4827
4828         rc = nv_open(dev);
4829 out:
4830         return rc;
4831 }
4832 #else
4833 #define nv_suspend NULL
4834 #define nv_resume NULL
4835 #endif /* CONFIG_PM */
4836
4837 static struct pci_device_id pci_tbl[] = {
4838         {       /* nForce Ethernet Controller */
4839                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
4840                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
4841         },
4842         {       /* nForce2 Ethernet Controller */
4843                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
4844                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
4845         },
4846         {       /* nForce3 Ethernet Controller */
4847                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
4848                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
4849         },
4850         {       /* nForce3 Ethernet Controller */
4851                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
4852                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
4853         },
4854         {       /* nForce3 Ethernet Controller */
4855                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
4856                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
4857         },
4858         {       /* nForce3 Ethernet Controller */
4859                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
4860                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
4861         },
4862         {       /* nForce3 Ethernet Controller */
4863                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
4864                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
4865         },
4866         {       /* CK804 Ethernet Controller */
4867                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
4868                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
4869         },
4870         {       /* CK804 Ethernet Controller */
4871                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
4872                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
4873         },
4874         {       /* MCP04 Ethernet Controller */
4875                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
4876                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
4877         },
4878         {       /* MCP04 Ethernet Controller */
4879                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
4880                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
4881         },
4882         {       /* MCP51 Ethernet Controller */
4883                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
4884                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
4885         },
4886         {       /* MCP51 Ethernet Controller */
4887                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
4888                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
4889         },
4890         {       /* MCP55 Ethernet Controller */
4891                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
4892                 .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|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4893         },
4894         {       /* MCP55 Ethernet Controller */
4895                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
4896                 .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|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4897         },
4898         {       /* MCP61 Ethernet Controller */
4899                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_16),
4900                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4901         },
4902         {       /* MCP61 Ethernet Controller */
4903                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_17),
4904                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4905         },
4906         {       /* MCP61 Ethernet Controller */
4907                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_18),
4908                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4909         },
4910         {       /* MCP61 Ethernet Controller */
4911                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_19),
4912                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4913         },
4914         {       /* MCP65 Ethernet Controller */
4915                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_20),
4916                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4917         },
4918         {       /* MCP65 Ethernet Controller */
4919                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_21),
4920                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4921         },
4922         {       /* MCP65 Ethernet Controller */
4923                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_22),
4924                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4925         },
4926         {       /* MCP65 Ethernet Controller */
4927                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_23),
4928                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4929         },
4930         {       /* MCP67 Ethernet Controller */
4931                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_24),
4932                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4933         },
4934         {       /* MCP67 Ethernet Controller */
4935                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_25),
4936                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4937         },
4938         {       /* MCP67 Ethernet Controller */
4939                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_26),
4940                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4941         },
4942         {       /* MCP67 Ethernet Controller */
4943                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_27),
4944                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
4945         },
4946         {0,},
4947 };
4948
4949 static struct pci_driver driver = {
4950         .name = "forcedeth",
4951         .id_table = pci_tbl,
4952         .probe = nv_probe,
4953         .remove = __devexit_p(nv_remove),
4954         .suspend = nv_suspend,
4955         .resume = nv_resume,
4956 };
4957
4958 static int __init init_nic(void)
4959 {
4960         printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION);
4961         return pci_register_driver(&driver);
4962 }
4963
4964 static void __exit exit_nic(void)
4965 {
4966         pci_unregister_driver(&driver);
4967 }
4968
4969 module_param(max_interrupt_work, int, 0);
4970 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
4971 module_param(optimization_mode, int, 0);
4972 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.");
4973 module_param(poll_interval, int, 0);
4974 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.");
4975 module_param(msi, int, 0);
4976 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
4977 module_param(msix, int, 0);
4978 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
4979 module_param(dma_64bit, int, 0);
4980 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
4981
4982 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
4983 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
4984 MODULE_LICENSE("GPL");
4985
4986 MODULE_DEVICE_TABLE(pci, pci_tbl);
4987
4988 module_init(init_nic);
4989 module_exit(exit_nic);