SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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.
   7  *
   8  * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
   9  * trademarks of NVIDIA Corporation in the United States and other
  10  * countries.
  11  *
  12  * Copyright (C) 2003,4,5 Manfred Spraul
  13  * Copyright (C) 2004 Andrew de Quincey (wol support)
  14  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  15  *              IRQ rate fixes, bigendian fixes, cleanups, verification)
  16  * Copyright (c) 2004,2005,2006,2007,2008 NVIDIA Corporation
  17  *
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License as published by
  20  * the Free Software Foundation; either version 2 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  31  *
  32  * Changelog:
  33  *      0.01: 05 Oct 2003: First release that compiles without warnings.
  34  *      0.02: 05 Oct 2003: Fix bug for nv_drain_tx: do not try to free NULL skbs.
  35  *                         Check all PCI BARs for the register window.
  36  *                         udelay added to mii_rw.
  37  *      0.03: 06 Oct 2003: Initialize dev->irq.
  38  *      0.04: 07 Oct 2003: Initialize np->lock, reduce handled irqs, add printks.
  39  *      0.05: 09 Oct 2003: printk removed again, irq status print tx_timeout.
  40  *      0.06: 10 Oct 2003: MAC Address read updated, pff flag generation updated,
  41  *                         irq mask updated
  42  *      0.07: 14 Oct 2003: Further irq mask updates.
  43  *      0.08: 20 Oct 2003: rx_desc.Length initialization added, nv_alloc_rx refill
  44  *                         added into irq handler, NULL check for drain_ring.
  45  *      0.09: 20 Oct 2003: Basic link speed irq implementation. Only handle the
  46  *                         requested interrupt sources.
  47  *      0.10: 20 Oct 2003: First cleanup for release.
  48  *      0.11: 21 Oct 2003: hexdump for tx added, rx buffer sizes increased.
  49  *                         MAC Address init fix, set_multicast cleanup.
  50  *      0.12: 23 Oct 2003: Cleanups for release.
  51  *      0.13: 25 Oct 2003: Limit for concurrent tx packets increased to 10.
  52  *                         Set link speed correctly. start rx before starting
  53  *                         tx (nv_start_rx sets the link speed).
  54  *      0.14: 25 Oct 2003: Nic dependant irq mask.
  55  *      0.15: 08 Nov 2003: fix smp deadlock with set_multicast_list during
  56  *                         open.
  57  *      0.16: 15 Nov 2003: include file cleanup for ppc64, rx buffer size
  58  *                         increased to 1628 bytes.
  59  *      0.17: 16 Nov 2003: undo rx buffer size increase. Substract 1 from
  60  *                         the tx length.
  61  *      0.18: 17 Nov 2003: fix oops due to late initialization of dev_stats
  62  *      0.19: 29 Nov 2003: Handle RxNoBuf, detect & handle invalid mac
  63  *                         addresses, really stop rx if already running
  64  *                         in nv_start_rx, clean up a bit.
  65  *      0.20: 07 Dec 2003: alloc fixes
  66  *      0.21: 12 Jan 2004: additional alloc fix, nic polling fix.
  67  *      0.22: 19 Jan 2004: reprogram timer to a sane rate, avoid lockup
  68  *                         on close.
  69  *      0.23: 26 Jan 2004: various small cleanups
  70  *      0.24: 27 Feb 2004: make driver even less anonymous in backtraces
  71  *      0.25: 09 Mar 2004: wol support
  72  *      0.26: 03 Jun 2004: netdriver specific annotation, sparse-related fixes
  73  *      0.27: 19 Jun 2004: Gigabit support, new descriptor rings,
  74  *                         added CK804/MCP04 device IDs, code fixes
  75  *                         for registers, link status and other minor fixes.
  76  *      0.28: 21 Jun 2004: Big cleanup, making driver mostly endian safe
  77  *      0.29: 31 Aug 2004: Add backup timer for link change notification.
  78  *      0.30: 25 Sep 2004: rx checksum support for nf 250 Gb. Add rx reset
  79  *                         into nv_close, otherwise reenabling for wol can
  80  *                         cause DMA to kfree'd memory.
  81  *      0.31: 14 Nov 2004: ethtool support for getting/setting link
  82  *                         capabilities.
  83  *      0.32: 16 Apr 2005: RX_ERROR4 handling added.
  84  *      0.33: 16 May 2005: Support for MCP51 added.
  85  *      0.34: 18 Jun 2005: Add DEV_NEED_LINKTIMER to all nForce nics.
  86  *      0.35: 26 Jun 2005: Support for MCP55 added.
  87  *      0.36: 28 Jun 2005: Add jumbo frame support.
  88  *      0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
  89  *      0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
  90  *                         per-packet flags.
  91  *      0.39: 18 Jul 2005: Add 64bit descriptor support.
  92  *      0.40: 19 Jul 2005: Add support for mac address change.
  93  *      0.41: 30 Jul 2005: Write back original MAC in nv_close instead
  94  *                         of nv_remove
  95  *      0.42: 06 Aug 2005: Fix lack of link speed initialization
  96  *                         in the second (and later) nv_open call
  97  *      0.43: 10 Aug 2005: Add support for tx checksum.
  98  *      0.44: 20 Aug 2005: Add support for scatter gather and segmentation.
  99  *      0.45: 18 Sep 2005: Remove nv_stop/start_rx from every link check
 100  *      0.46: 20 Oct 2005: Add irq optimization modes.
 101  *      0.47: 26 Oct 2005: Add phyaddr 0 in phy scan.
 102  *      0.48: 24 Dec 2005: Disable TSO, bugfix for pci_map_single
 103  *      0.49: 10 Dec 2005: Fix tso for large buffers.
 104  *      0.50: 20 Jan 2006: Add 8021pq tagging support.
 105  *      0.51: 20 Jan 2006: Add 64bit consistent memory allocation for rings.
 106  *      0.52: 20 Jan 2006: Add MSI/MSIX support.
 107  *      0.53: 19 Mar 2006: Fix init from low power mode and add hw reset.
 108  *      0.54: 21 Mar 2006: Fix spin locks for multi irqs and cleanup.
 109  *      0.55: 22 Mar 2006: Add flow control (pause frame).
 110  *      0.56: 22 Mar 2006: Additional ethtool config and moduleparam support.
 111  *      0.57: 14 May 2006: Mac address set in probe/remove and order corrections.
 112  *      0.58: 30 Oct 2006: Added support for sideband management unit.
 113  *      0.59: 30 Oct 2006: Added support for recoverable error.
 114  *      0.60: 20 Jan 2007: Code optimizations for rings, rx & tx data paths, and stats.
 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               "0.61"
 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 #define TX_WORK_PER_LOOP  64
 163 #define RX_WORK_PER_LOOP  64
 164
 165 /*
 166  * Hardware access:
 167  */
 168
 169 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 170 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 171 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
 172 #define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 173 #define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 174 #define DEV_HAS_VLAN            0x0020  /* device supports vlan tagging and striping */
 175 #define DEV_HAS_MSI             0x0040  /* device supports MSI */
 176 #define DEV_HAS_MSI_X           0x0080  /* device supports MSI-X */
 177 #define DEV_HAS_POWER_CNTRL     0x0100  /* device supports power savings */
 178 #define DEV_HAS_PAUSEFRAME_TX   0x0200  /* device supports tx pause frames */
 179 #define DEV_HAS_STATISTICS_V1   0x0400  /* device supports hw statistics version 1 */
 180 #define DEV_HAS_STATISTICS_V2   0x0800  /* device supports hw statistics version 2 */
 181 #define DEV_HAS_TEST_EXTENDED   0x1000  /* device supports extended diagnostic test */
 182 #define DEV_HAS_MGMT_UNIT       0x2000  /* device supports management unit */
 183 #define DEV_HAS_CORRECT_MACADDR 0x4000  /* device supports correct mac address order */
 184
 185 enum {
 186         NvRegIrqStatus = 0x000,
 187 #define NVREG_IRQSTAT_MIIEVENT  0x040
 188 #define NVREG_IRQSTAT_MASK              0x81ff
 189         NvRegIrqMask = 0x004,
 190 #define NVREG_IRQ_RX_ERROR              0x0001
 191 #define NVREG_IRQ_RX                    0x0002
 192 #define NVREG_IRQ_RX_NOBUF              0x0004
 193 #define NVREG_IRQ_TX_ERR                0x0008
 194 #define NVREG_IRQ_TX_OK                 0x0010
 195 #define NVREG_IRQ_TIMER                 0x0020
 196 #define NVREG_IRQ_LINK                  0x0040
 197 #define NVREG_IRQ_RX_FORCED             0x0080
 198 #define NVREG_IRQ_TX_FORCED             0x0100
 199 #define NVREG_IRQ_RECOVER_ERROR         0x8000
 200 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 201 #define NVREG_IRQMASK_CPU               0x0060
 202 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 203 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 204 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 205
 206 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 207                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
 208                                         NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR))
 209
 210         NvRegUnknownSetupReg6 = 0x008,
 211 #define NVREG_UNKSETUP6_VAL             3
 212
 213 /*
 214  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 215  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 216  */
 217         NvRegPollingInterval = 0x00c,
 218 #define NVREG_POLL_DEFAULT_THROUGHPUT   970 /* backup tx cleanup if loop max reached */
 219 #define NVREG_POLL_DEFAULT_CPU  13
 220         NvRegMSIMap0 = 0x020,
 221         NvRegMSIMap1 = 0x024,
 222         NvRegMSIIrqMask = 0x030,
 223 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 224         NvRegMisc1 = 0x080,
 225 #define NVREG_MISC1_PAUSE_TX    0x01
 226 #define NVREG_MISC1_HD          0x02
 227 #define NVREG_MISC1_FORCE       0x3b0f3c
 228
 229         NvRegMacReset = 0x34,
 230 #define NVREG_MAC_RESET_ASSERT  0x0F3
 231         NvRegTransmitterControl = 0x084,
 232 #define NVREG_XMITCTL_START     0x01
 233 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 234 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 235 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 236 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 237 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 238 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 239 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 240 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 241 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 242 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
 243         NvRegTransmitterStatus = 0x088,
 244 #define NVREG_XMITSTAT_BUSY     0x01
 245
 246         NvRegPacketFilterFlags = 0x8c,
 247 #define NVREG_PFF_PAUSE_RX      0x08
 248 #define NVREG_PFF_ALWAYS        0x7F0000
 249 #define NVREG_PFF_PROMISC       0x80
 250 #define NVREG_PFF_MYADDR        0x20
 251 #define NVREG_PFF_LOOPBACK      0x10
 252
 253         NvRegOffloadConfig = 0x90,
 254 #define NVREG_OFFLOAD_HOMEPHY   0x601
 255 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 256         NvRegReceiverControl = 0x094,
 257 #define NVREG_RCVCTL_START      0x01
 258 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
 259         NvRegReceiverStatus = 0x98,
 260 #define NVREG_RCVSTAT_BUSY      0x01
 261
 262         NvRegRandomSeed = 0x9c,
 263 #define NVREG_RNDSEED_MASK      0x00ff
 264 #define NVREG_RNDSEED_FORCE     0x7f00
 265 #define NVREG_RNDSEED_FORCE2    0x2d00
 266 #define NVREG_RNDSEED_FORCE3    0x7400
 267
 268         NvRegTxDeferral = 0xA0,
 269 #define NVREG_TX_DEFERRAL_DEFAULT       0x15050f
 270 #define NVREG_TX_DEFERRAL_RGMII_10_100  0x16070f
 271 #define NVREG_TX_DEFERRAL_RGMII_1000    0x14050f
 272         NvRegRxDeferral = 0xA4,
 273 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 274         NvRegMacAddrA = 0xA8,
 275         NvRegMacAddrB = 0xAC,
 276         NvRegMulticastAddrA = 0xB0,
 277 #define NVREG_MCASTADDRA_FORCE  0x01
 278         NvRegMulticastAddrB = 0xB4,
 279         NvRegMulticastMaskA = 0xB8,
 280 #define NVREG_MCASTMASKA_NONE           0xffffffff
 281         NvRegMulticastMaskB = 0xBC,
 282 #define NVREG_MCASTMASKB_NONE           0xffff
 283
 284         NvRegPhyInterface = 0xC0,
 285 #define PHY_RGMII               0x10000000
 286
 287         NvRegTxRingPhysAddr = 0x100,
 288         NvRegRxRingPhysAddr = 0x104,
 289         NvRegRingSizes = 0x108,
 290 #define NVREG_RINGSZ_TXSHIFT 0
 291 #define NVREG_RINGSZ_RXSHIFT 16
 292         NvRegTransmitPoll = 0x10c,
 293 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 294         NvRegLinkSpeed = 0x110,
 295 #define NVREG_LINKSPEED_FORCE 0x10000
 296 #define NVREG_LINKSPEED_10      1000
 297 #define NVREG_LINKSPEED_100     100
 298 #define NVREG_LINKSPEED_1000    50
 299 #define NVREG_LINKSPEED_MASK    (0xFFF)
 300         NvRegUnknownSetupReg5 = 0x130,
 301 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 302         NvRegTxWatermark = 0x13c,
 303 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 304 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 305 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 306         NvRegTxRxControl = 0x144,
 307 #define NVREG_TXRXCTL_KICK      0x0001
 308 #define NVREG_TXRXCTL_BIT1      0x0002
 309 #define NVREG_TXRXCTL_BIT2      0x0004
 310 #define NVREG_TXRXCTL_IDLE      0x0008
 311 #define NVREG_TXRXCTL_RESET     0x0010
 312 #define NVREG_TXRXCTL_RXCHECK   0x0400
 313 #define NVREG_TXRXCTL_DESC_1    0
 314 #define NVREG_TXRXCTL_DESC_2    0x002100
 315 #define NVREG_TXRXCTL_DESC_3    0xc02200
 316 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 317 #define NVREG_TXRXCTL_VLANINS   0x00080
 318         NvRegTxRingPhysAddrHigh = 0x148,
 319         NvRegRxRingPhysAddrHigh = 0x14C,
 320         NvRegTxPauseFrame = 0x170,
 321 #define NVREG_TX_PAUSEFRAME_DISABLE     0x01ff0080
 322 #define NVREG_TX_PAUSEFRAME_ENABLE      0x01800010
 323         NvRegMIIStatus = 0x180,
 324 #define NVREG_MIISTAT_ERROR             0x0001
 325 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 326 #define NVREG_MIISTAT_MASK_RW           0x0007
 327 #define NVREG_MIISTAT_MASK_ALL          0x000f
 328         NvRegMIIMask = 0x184,
 329 #define NVREG_MII_LINKCHANGE            0x0008
 330
 331         NvRegAdapterControl = 0x188,
 332 #define NVREG_ADAPTCTL_START    0x02
 333 #define NVREG_ADAPTCTL_LINKUP   0x04
 334 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 335 #define NVREG_ADAPTCTL_RUNNING  0x100000
 336 #define NVREG_ADAPTCTL_PHYSHIFT 24
 337         NvRegMIISpeed = 0x18c,
 338 #define NVREG_MIISPEED_BIT8     (1<<8)
 339 #define NVREG_MIIDELAY  5
 340         NvRegMIIControl = 0x190,
 341 #define NVREG_MIICTL_INUSE      0x08000
 342 #define NVREG_MIICTL_WRITE      0x00400
 343 #define NVREG_MIICTL_ADDRSHIFT  5
 344         NvRegMIIData = 0x194,
 345         NvRegWakeUpFlags = 0x200,
 346 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 347 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 348 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 349 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 350 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 351 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 352 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 353 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 354 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 355 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 356 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 357
 358         NvRegPatternCRC = 0x204,
 359         NvRegPatternMask = 0x208,
 360         NvRegPowerCap = 0x268,
 361 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 362 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 363 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 364         NvRegPowerState = 0x26c,
 365 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 366 #define NVREG_POWERSTATE_VALID          0x0100
 367 #define NVREG_POWERSTATE_MASK           0x0003
 368 #define NVREG_POWERSTATE_D0             0x0000
 369 #define NVREG_POWERSTATE_D1             0x0001
 370 #define NVREG_POWERSTATE_D2             0x0002
 371 #define NVREG_POWERSTATE_D3             0x0003
 372         NvRegTxCnt = 0x280,
 373         NvRegTxZeroReXmt = 0x284,
 374         NvRegTxOneReXmt = 0x288,
 375         NvRegTxManyReXmt = 0x28c,
 376         NvRegTxLateCol = 0x290,
 377         NvRegTxUnderflow = 0x294,
 378         NvRegTxLossCarrier = 0x298,
 379         NvRegTxExcessDef = 0x29c,
 380         NvRegTxRetryErr = 0x2a0,
 381         NvRegRxFrameErr = 0x2a4,
 382         NvRegRxExtraByte = 0x2a8,
 383         NvRegRxLateCol = 0x2ac,
 384         NvRegRxRunt = 0x2b0,
 385         NvRegRxFrameTooLong = 0x2b4,
 386         NvRegRxOverflow = 0x2b8,
 387         NvRegRxFCSErr = 0x2bc,
 388         NvRegRxFrameAlignErr = 0x2c0,
 389         NvRegRxLenErr = 0x2c4,
 390         NvRegRxUnicast = 0x2c8,
 391         NvRegRxMulticast = 0x2cc,
 392         NvRegRxBroadcast = 0x2d0,
 393         NvRegTxDef = 0x2d4,
 394         NvRegTxFrame = 0x2d8,
 395         NvRegRxCnt = 0x2dc,
 396         NvRegTxPause = 0x2e0,
 397         NvRegRxPause = 0x2e4,
 398         NvRegRxDropFrame = 0x2e8,
 399         NvRegVlanControl = 0x300,
 400 #define NVREG_VLANCONTROL_ENABLE        0x2000
 401         NvRegMSIXMap0 = 0x3e0,
 402         NvRegMSIXMap1 = 0x3e4,
 403         NvRegMSIXIrqStatus = 0x3f0,
 404
 405         NvRegPowerState2 = 0x600,
 406 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
 407 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 408 };
 409
 410 /* Big endian: should work, but is untested */
 411 struct ring_desc {
 412         __le32 buf;
 413         __le32 flaglen;
 414 };
 415
 416 struct ring_desc_ex {
 417         __le32 bufhigh;
 418         __le32 buflow;
 419         __le32 txvlan;
 420         __le32 flaglen;
 421 };
 422
 423 union ring_type {
 424         struct ring_desc* orig;
 425         struct ring_desc_ex* ex;
 426 };
 427
 428 #define FLAG_MASK_V1 0xffff0000
 429 #define FLAG_MASK_V2 0xffffc000
 430 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 431 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 432
 433 #define NV_TX_LASTPACKET        (1<<16)
 434 #define NV_TX_RETRYERROR        (1<<19)
 435 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 436 #define NV_TX_DEFERRED          (1<<26)
 437 #define NV_TX_CARRIERLOST       (1<<27)
 438 #define NV_TX_LATECOLLISION     (1<<28)
 439 #define NV_TX_UNDERFLOW         (1<<29)
 440 #define NV_TX_ERROR             (1<<30)
 441 #define NV_TX_VALID             (1<<31)
 442
 443 #define NV_TX2_LASTPACKET       (1<<29)
 444 #define NV_TX2_RETRYERROR       (1<<18)
 445 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 446 #define NV_TX2_DEFERRED         (1<<25)
 447 #define NV_TX2_CARRIERLOST      (1<<26)
 448 #define NV_TX2_LATECOLLISION    (1<<27)
 449 #define NV_TX2_UNDERFLOW        (1<<28)
 450 /* error and valid are the same for both */
 451 #define NV_TX2_ERROR            (1<<30)
 452 #define NV_TX2_VALID            (1<<31)
 453 #define NV_TX2_TSO              (1<<28)
 454 #define NV_TX2_TSO_SHIFT        14
 455 #define NV_TX2_TSO_MAX_SHIFT    14
 456 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 457 #define NV_TX2_CHECKSUM_L3      (1<<27)
 458 #define NV_TX2_CHECKSUM_L4      (1<<26)
 459
 460 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 461
 462 #define NV_RX_DESCRIPTORVALID   (1<<16)
 463 #define NV_RX_MISSEDFRAME       (1<<17)
 464 #define NV_RX_SUBSTRACT1        (1<<18)
 465 #define NV_RX_ERROR1            (1<<23)
 466 #define NV_RX_ERROR2            (1<<24)
 467 #define NV_RX_ERROR3            (1<<25)
 468 #define NV_RX_ERROR4            (1<<26)
 469 #define NV_RX_CRCERR            (1<<27)
 470 #define NV_RX_OVERFLOW          (1<<28)
 471 #define NV_RX_FRAMINGERR        (1<<29)
 472 #define NV_RX_ERROR             (1<<30)
 473 #define NV_RX_AVAIL             (1<<31)
 474
 475 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 476 #define NV_RX2_CHECKSUM_IP      (0x10000000)
 477 #define NV_RX2_CHECKSUM_IP_TCP  (0x14000000)
 478 #define NV_RX2_CHECKSUM_IP_UDP  (0x18000000)
 479 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 480 #define NV_RX2_SUBSTRACT1       (1<<25)
 481 #define NV_RX2_ERROR1           (1<<18)
 482 #define NV_RX2_ERROR2           (1<<19)
 483 #define NV_RX2_ERROR3           (1<<20)
 484 #define NV_RX2_ERROR4           (1<<21)
 485 #define NV_RX2_CRCERR           (1<<22)
 486 #define NV_RX2_OVERFLOW         (1<<23)
 487 #define NV_RX2_FRAMINGERR       (1<<24)
 488 /* error and avail are the same for both */
 489 #define NV_RX2_ERROR            (1<<30)
 490 #define NV_RX2_AVAIL            (1<<31)
 491
 492 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 493 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 494
 495 /* Miscelaneous hardware related defines: */
 496 #define NV_PCI_REGSZ_VER1       0x270
 497 #define NV_PCI_REGSZ_VER2       0x2d4
 498 #define NV_PCI_REGSZ_VER3       0x604
 499
 500 /* various timeout delays: all in usec */
 501 #define NV_TXRX_RESET_DELAY     4
 502 #define NV_TXSTOP_DELAY1        10
 503 #define NV_TXSTOP_DELAY1MAX     500000
 504 #define NV_TXSTOP_DELAY2        100
 505 #define NV_RXSTOP_DELAY1        10
 506 #define NV_RXSTOP_DELAY1MAX     500000
 507 #define NV_RXSTOP_DELAY2        100
 508 #define NV_SETUP5_DELAY         5
 509 #define NV_SETUP5_DELAYMAX      50000
 510 #define NV_POWERUP_DELAY        5
 511 #define NV_POWERUP_DELAYMAX     5000
 512 #define NV_MIIBUSY_DELAY        50
 513 #define NV_MIIPHY_DELAY 10
 514 #define NV_MIIPHY_DELAYMAX      10000
 515 #define NV_MAC_RESET_DELAY      64
 516
 517 #define NV_WAKEUPPATTERNS       5
 518 #define NV_WAKEUPMASKENTRIES    4
 519
 520 /* General driver defaults */
 521 #define NV_WATCHDOG_TIMEO       (5*HZ)
 522
 523 #define RX_RING_DEFAULT         128
 524 #define TX_RING_DEFAULT         256
 525 #define RX_RING_MIN             128
 526 #define TX_RING_MIN             64
 527 #define RING_MAX_DESC_VER_1     1024
 528 #define RING_MAX_DESC_VER_2_3   16384
 529
 530 /* rx/tx mac addr + type + vlan + align + slack*/
 531 #define NV_RX_HEADERS           (64)
 532 /* even more slack. */
 533 #define NV_RX_ALLOC_PAD         (64)
 534
 535 /* maximum mtu size */
 536 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 537 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 538
 539 #define OOM_REFILL      (1+HZ/20)
 540 #define POLL_WAIT       (1+HZ/100)
 541 #define LINK_TIMEOUT    (3*HZ)
 542 #define STATS_INTERVAL  (10*HZ)
 543
 544 /*
 545  * desc_ver values:
 546  * The nic supports three different descriptor types:
 547  * - DESC_VER_1: Original
 548  * - DESC_VER_2: support for jumbo frames.
 549  * - DESC_VER_3: 64-bit format.
 550  */
 551 #define DESC_VER_1      1
 552 #define DESC_VER_2      2
 553 #define DESC_VER_3      3
 554
 555 /* PHY defines */
 556 #define PHY_OUI_MARVELL 0x5043
 557 #define PHY_OUI_CICADA  0x03f1
 558 #define PHY_OUI_VITESSE 0x01c1
 559 #define PHY_OUI_REALTEK 0x0732
 560 #define PHYID1_OUI_MASK 0x03ff
 561 #define PHYID1_OUI_SHFT 6
 562 #define PHYID2_OUI_MASK 0xfc00
 563 #define PHYID2_OUI_SHFT 10
 564 #define PHYID2_MODEL_MASK               0x03f0
 565 #define PHY_MODEL_MARVELL_E3016         0x220
 566 #define PHY_MARVELL_E3016_INITMASK      0x0300
 567 #define PHY_CICADA_INIT1        0x0f000
 568 #define PHY_CICADA_INIT2        0x0e00
 569 #define PHY_CICADA_INIT3        0x01000
 570 #define PHY_CICADA_INIT4        0x0200
 571 #define PHY_CICADA_INIT5        0x0004
 572 #define PHY_CICADA_INIT6        0x02000
 573 #define PHY_VITESSE_INIT_REG1   0x1f
 574 #define PHY_VITESSE_INIT_REG2   0x10
 575 #define PHY_VITESSE_INIT_REG3   0x11
 576 #define PHY_VITESSE_INIT_REG4   0x12
 577 #define PHY_VITESSE_INIT_MSK1   0xc
 578 #define PHY_VITESSE_INIT_MSK2   0x0180
 579 #define PHY_VITESSE_INIT1       0x52b5
 580 #define PHY_VITESSE_INIT2       0xaf8a
 581 #define PHY_VITESSE_INIT3       0x8
 582 #define PHY_VITESSE_INIT4       0x8f8a
 583 #define PHY_VITESSE_INIT5       0xaf86
 584 #define PHY_VITESSE_INIT6       0x8f86
 585 #define PHY_VITESSE_INIT7       0xaf82
 586 #define PHY_VITESSE_INIT8       0x0100
 587 #define PHY_VITESSE_INIT9       0x8f82
 588 #define PHY_VITESSE_INIT10      0x0
 589 #define PHY_REALTEK_INIT_REG1   0x1f
 590 #define PHY_REALTEK_INIT_REG2   0x19
 591 #define PHY_REALTEK_INIT_REG3   0x13
 592 #define PHY_REALTEK_INIT1       0x0000
 593 #define PHY_REALTEK_INIT2       0x8e00
 594 #define PHY_REALTEK_INIT3       0x0001
 595 #define PHY_REALTEK_INIT4       0xad17
 596
 597 #define PHY_GIGABIT     0x0100
 598
 599 #define PHY_TIMEOUT     0x1
 600 #define PHY_ERROR       0x2
 601
 602 #define PHY_100 0x1
 603 #define PHY_1000        0x2
 604 #define PHY_HALF        0x100
 605
 606 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 607 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 608 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 609 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 610 #define NV_PAUSEFRAME_RX_REQ     0x0010
 611 #define NV_PAUSEFRAME_TX_REQ     0x0020
 612 #define NV_PAUSEFRAME_AUTONEG    0x0040
 613
 614 /* MSI/MSI-X defines */
 615 #define NV_MSI_X_MAX_VECTORS  8
 616 #define NV_MSI_X_VECTORS_MASK 0x000f
 617 #define NV_MSI_CAPABLE        0x0010
 618 #define NV_MSI_X_CAPABLE      0x0020
 619 #define NV_MSI_ENABLED        0x0040
 620 #define NV_MSI_X_ENABLED      0x0080
 621
 622 #define NV_MSI_X_VECTOR_ALL   0x0
 623 #define NV_MSI_X_VECTOR_RX    0x0
 624 #define NV_MSI_X_VECTOR_TX    0x1
 625 #define NV_MSI_X_VECTOR_OTHER 0x2
 626
 627 #define NV_RESTART_TX         0x1
 628 #define NV_RESTART_RX         0x2
 629
 630 /* statistics */
 631 struct nv_ethtool_str {
 632         char name[ETH_GSTRING_LEN];
 633 };
 634
 635 static const struct nv_ethtool_str nv_estats_str[] = {
 636         { "tx_bytes" },
 637         { "tx_zero_rexmt" },
 638         { "tx_one_rexmt" },
 639         { "tx_many_rexmt" },
 640         { "tx_late_collision" },
 641         { "tx_fifo_errors" },
 642         { "tx_carrier_errors" },
 643         { "tx_excess_deferral" },
 644         { "tx_retry_error" },
 645         { "rx_frame_error" },
 646         { "rx_extra_byte" },
 647         { "rx_late_collision" },
 648         { "rx_runt" },
 649         { "rx_frame_too_long" },
 650         { "rx_over_errors" },
 651         { "rx_crc_errors" },
 652         { "rx_frame_align_error" },
 653         { "rx_length_error" },
 654         { "rx_unicast" },
 655         { "rx_multicast" },
 656         { "rx_broadcast" },
 657         { "rx_packets" },
 658         { "rx_errors_total" },
 659         { "tx_errors_total" },
 660
 661         /* version 2 stats */
 662         { "tx_deferral" },
 663         { "tx_packets" },
 664         { "rx_bytes" },
 665         { "tx_pause" },
 666         { "rx_pause" },
 667         { "rx_drop_frame" }
 668 };
 669
 670 struct nv_ethtool_stats {
 671         u64 tx_bytes;
 672         u64 tx_zero_rexmt;
 673         u64 tx_one_rexmt;
 674         u64 tx_many_rexmt;
 675         u64 tx_late_collision;
 676         u64 tx_fifo_errors;
 677         u64 tx_carrier_errors;
 678         u64 tx_excess_deferral;
 679         u64 tx_retry_error;
 680         u64 rx_frame_error;
 681         u64 rx_extra_byte;
 682         u64 rx_late_collision;
 683         u64 rx_runt;
 684         u64 rx_frame_too_long;
 685         u64 rx_over_errors;
 686         u64 rx_crc_errors;
 687         u64 rx_frame_align_error;
 688         u64 rx_length_error;
 689         u64 rx_unicast;
 690         u64 rx_multicast;
 691         u64 rx_broadcast;
 692         u64 rx_packets;
 693         u64 rx_errors_total;
 694         u64 tx_errors_total;
 695
 696         /* version 2 stats */
 697         u64 tx_deferral;
 698         u64 tx_packets;
 699         u64 rx_bytes;
 700         u64 tx_pause;
 701         u64 rx_pause;
 702         u64 rx_drop_frame;
 703 };
 704
 705 #define NV_DEV_STATISTICS_V2_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
 706 #define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
 707
 708 /* diagnostics */
 709 #define NV_TEST_COUNT_BASE 3
 710 #define NV_TEST_COUNT_EXTENDED 4
 711
 712 static const struct nv_ethtool_str nv_etests_str[] = {
 713         { "link      (online/offline)" },
 714         { "register  (offline)       " },
 715         { "interrupt (offline)       " },
 716         { "loopback  (offline)       " }
 717 };
 718
 719 struct register_test {
 720         __u32 reg;
 721         __u32 mask;
 722 };
 723
 724 static const struct register_test nv_registers_test[] = {
 725         { NvRegUnknownSetupReg6, 0x01 },
 726         { NvRegMisc1, 0x03c },
 727         { NvRegOffloadConfig, 0x03ff },
 728         { NvRegMulticastAddrA, 0xffffffff },
 729         { NvRegTxWatermark, 0x0ff },
 730         { NvRegWakeUpFlags, 0x07777 },
 731         { 0,0 }
 732 };
 733
 734 struct nv_skb_map {
 735         struct sk_buff *skb;
 736         dma_addr_t dma;
 737         unsigned int dma_len;
 738 };
 739
 740 /*
 741  * SMP locking:
 742  * All hardware access under dev->priv->lock, except the performance
 743  * critical parts:
 744  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 745  *      by the arch code for interrupts.
 746  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 747  *      needs dev->priv->lock :-(
 748  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 749  */
 750
 751 /* in dev: base, irq */
 752 struct fe_priv {
 753         spinlock_t lock;
 754
 755         struct net_device *dev;
 756         struct napi_struct napi;
 757
 758         /* General data:
 759          * Locking: spin_lock(&np->lock); */
 760         struct nv_ethtool_stats estats;
 761         int in_shutdown;
 762         u32 linkspeed;
 763         int duplex;
 764         int autoneg;
 765         int fixed_mode;
 766         int phyaddr;
 767         int wolenabled;
 768         unsigned int phy_oui;
 769         unsigned int phy_model;
 770         u16 gigabit;
 771         int intr_test;
 772         int recover_error;
 773
 774         /* General data: RO fields */
 775         dma_addr_t ring_addr;
 776         struct pci_dev *pci_dev;
 777         u32 orig_mac[2];
 778         u32 irqmask;
 779         u32 desc_ver;
 780         u32 txrxctl_bits;
 781         u32 vlanctl_bits;
 782         u32 driver_data;
 783         u32 register_size;
 784         int rx_csum;
 785         u32 mac_in_use;
 786
 787         void __iomem *base;
 788
 789         /* rx specific fields.
 790          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 791          */
 792         union ring_type get_rx, put_rx, first_rx, last_rx;
 793         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 794         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 795         struct nv_skb_map *rx_skb;
 796
 797         union ring_type rx_ring;
 798         unsigned int rx_buf_sz;
 799         unsigned int pkt_limit;
 800         struct timer_list oom_kick;
 801         struct timer_list nic_poll;
 802         struct timer_list stats_poll;
 803         u32 nic_poll_irq;
 804         int rx_ring_size;
 805
 806         /* media detection workaround.
 807          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 808          */
 809         int need_linktimer;
 810         unsigned long link_timeout;
 811         /*
 812          * tx specific fields.
 813          */
 814         union ring_type get_tx, put_tx, first_tx, last_tx;
 815         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 816         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 817         struct nv_skb_map *tx_skb;
 818
 819         union ring_type tx_ring;
 820         u32 tx_flags;
 821         int tx_ring_size;
 822         int tx_stop;
 823
 824         /* vlan fields */
 825         struct vlan_group *vlangrp;
 826
 827         /* msi/msi-x fields */
 828         u32 msi_flags;
 829         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 830
 831         /* flow control */
 832         u32 pause_flags;
 833 };
 834
 835 /*
 836  * Maximum number of loops until we assume that a bit in the irq mask
 837  * is stuck. Overridable with module param.
 838  */
 839 static int max_interrupt_work = 5;
 840
 841 /*
 842  * Optimization can be either throuput mode or cpu mode
 843  *
 844  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 845  * CPU Mode: Interrupts are controlled by a timer.
 846  */
 847 enum {
 848         NV_OPTIMIZATION_MODE_THROUGHPUT,
 849         NV_OPTIMIZATION_MODE_CPU
 850 };
 851 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 852
 853 /*
 854  * Poll interval for timer irq
 855  *
 856  * This interval determines how frequent an interrupt is generated.
 857  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 858  * Min = 0, and Max = 65535
 859  */
 860 static int poll_interval = -1;
 861
 862 /*
 863  * MSI interrupts
 864  */
 865 enum {
 866         NV_MSI_INT_DISABLED,
 867         NV_MSI_INT_ENABLED
 868 };
 869 static int msi = NV_MSI_INT_ENABLED;
 870
 871 /*
 872  * MSIX interrupts
 873  */
 874 enum {
 875         NV_MSIX_INT_DISABLED,
 876         NV_MSIX_INT_ENABLED
 877 };
 878 static int msix = NV_MSIX_INT_DISABLED;
 879
 880 /*
 881  * DMA 64bit
 882  */
 883 enum {
 884         NV_DMA_64BIT_DISABLED,
 885         NV_DMA_64BIT_ENABLED
 886 };
 887 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 888
 889 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 890 {
 891         return netdev_priv(dev);
 892 }
 893
 894 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 895 {
 896         return ((struct fe_priv *)netdev_priv(dev))->base;
 897 }
 898
 899 static inline void pci_push(u8 __iomem *base)
 900 {
 901         /* force out pending posted writes */
 902         readl(base);
 903 }
 904
 905 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 906 {
 907         return le32_to_cpu(prd->flaglen)
 908                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 909 }
 910
 911 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 912 {
 913         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 914 }
 915
 916 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 917                                 int delay, int delaymax, const char *msg)
 918 {
 919         u8 __iomem *base = get_hwbase(dev);
 920
 921         pci_push(base);
 922         do {
 923                 udelay(delay);
 924                 delaymax -= delay;
 925                 if (delaymax < 0) {
 926                         if (msg)
 927                                 printk(msg);
 928                         return 1;
 929                 }
 930         } while ((readl(base + offset) & mask) != target);
 931         return 0;
 932 }
 933
 934 #define NV_SETUP_RX_RING 0x01
 935 #define NV_SETUP_TX_RING 0x02
 936
 937 static inline u32 dma_low(dma_addr_t addr)
 938 {
 939         return addr;
 940 }
 941
 942 static inline u32 dma_high(dma_addr_t addr)
 943 {
 944         return addr>>31>>1;     /* 0 if 32bit, shift down by 32 if 64bit */
 945 }
 946
 947 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
 948 {
 949         struct fe_priv *np = get_nvpriv(dev);
 950         u8 __iomem *base = get_hwbase(dev);
 951
 952         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 953                 if (rxtx_flags & NV_SETUP_RX_RING) {
 954                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
 955                 }
 956                 if (rxtx_flags & NV_SETUP_TX_RING) {
 957                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
 958                 }
 959         } else {
 960                 if (rxtx_flags & NV_SETUP_RX_RING) {
 961                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
 962                         writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
 963                 }
 964                 if (rxtx_flags & NV_SETUP_TX_RING) {
 965                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
 966                         writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
 967                 }
 968         }
 969 }
 970
 971 static void free_rings(struct net_device *dev)
 972 {
 973         struct fe_priv *np = get_nvpriv(dev);
 974
 975         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 976                 if (np->rx_ring.orig)
 977                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
 978                                             np->rx_ring.orig, np->ring_addr);
 979         } else {
 980                 if (np->rx_ring.ex)
 981                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
 982                                             np->rx_ring.ex, np->ring_addr);
 983         }
 984         if (np->rx_skb)
 985                 kfree(np->rx_skb);
 986         if (np->tx_skb)
 987                 kfree(np->tx_skb);
 988 }
 989
 990 static int using_multi_irqs(struct net_device *dev)
 991 {
 992         struct fe_priv *np = get_nvpriv(dev);
 993
 994         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
 995             ((np->msi_flags & NV_MSI_X_ENABLED) &&
 996              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
 997                 return 0;
 998         else
 999                 return 1;
1000 }
1001
1002 static void nv_enable_irq(struct net_device *dev)
1003 {
1004         struct fe_priv *np = get_nvpriv(dev);
1005
1006         if (!using_multi_irqs(dev)) {
1007                 if (np->msi_flags & NV_MSI_X_ENABLED)
1008                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1009                 else
1010                         enable_irq(np->pci_dev->irq);
1011         } else {
1012                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1013                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1014                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1015         }
1016 }
1017
1018 static void nv_disable_irq(struct net_device *dev)
1019 {
1020         struct fe_priv *np = get_nvpriv(dev);
1021
1022         if (!using_multi_irqs(dev)) {
1023                 if (np->msi_flags & NV_MSI_X_ENABLED)
1024                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1025                 else
1026                         disable_irq(np->pci_dev->irq);
1027         } else {
1028                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1029                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1030                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1031         }
1032 }
1033
1034 /* In MSIX mode, a write to irqmask behaves as XOR */
1035 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1036 {
1037         u8 __iomem *base = get_hwbase(dev);
1038
1039         writel(mask, base + NvRegIrqMask);
1040 }
1041
1042 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1043 {
1044         struct fe_priv *np = get_nvpriv(dev);
1045         u8 __iomem *base = get_hwbase(dev);
1046
1047         if (np->msi_flags & NV_MSI_X_ENABLED) {
1048                 writel(mask, base + NvRegIrqMask);
1049         } else {
1050                 if (np->msi_flags & NV_MSI_ENABLED)
1051                         writel(0, base + NvRegMSIIrqMask);
1052                 writel(0, base + NvRegIrqMask);
1053         }
1054 }
1055
1056 #define MII_READ        (-1)
1057 /* mii_rw: read/write a register on the PHY.
1058  *
1059  * Caller must guarantee serialization
1060  */
1061 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1062 {
1063         u8 __iomem *base = get_hwbase(dev);
1064         u32 reg;
1065         int retval;
1066
1067         writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1068
1069         reg = readl(base + NvRegMIIControl);
1070         if (reg & NVREG_MIICTL_INUSE) {
1071                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1072                 udelay(NV_MIIBUSY_DELAY);
1073         }
1074
1075         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1076         if (value != MII_READ) {
1077                 writel(value, base + NvRegMIIData);
1078                 reg |= NVREG_MIICTL_WRITE;
1079         }
1080         writel(reg, base + NvRegMIIControl);
1081
1082         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1083                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
1084                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
1085                                 dev->name, miireg, addr);
1086                 retval = -1;
1087         } else if (value != MII_READ) {
1088                 /* it was a write operation - fewer failures are detectable */
1089                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
1090                                 dev->name, value, miireg, addr);
1091                 retval = 0;
1092         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1093                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
1094                                 dev->name, miireg, addr);
1095                 retval = -1;
1096         } else {
1097                 retval = readl(base + NvRegMIIData);
1098                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
1099                                 dev->name, miireg, addr, retval);
1100         }
1101
1102         return retval;
1103 }
1104
1105 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1106 {
1107         struct fe_priv *np = netdev_priv(dev);
1108         u32 miicontrol;
1109         unsigned int tries = 0;
1110
1111         miicontrol = BMCR_RESET | bmcr_setup;
1112         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
1113                 return -1;
1114         }
1115
1116         /* wait for 500ms */
1117         msleep(500);
1118
1119         /* must wait till reset is deasserted */
1120         while (miicontrol & BMCR_RESET) {
1121                 msleep(10);
1122                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1123                 /* FIXME: 100 tries seem excessive */
1124                 if (tries++ > 100)
1125                         return -1;
1126         }
1127         return 0;
1128 }
1129
1130 static int phy_init(struct net_device *dev)
1131 {
1132         struct fe_priv *np = get_nvpriv(dev);
1133         u8 __iomem *base = get_hwbase(dev);
1134         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
1135
1136         /* phy errata for E3016 phy */
1137         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1138                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1139                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1140                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1141                         printk(KERN_INFO "%s: phy write to errata reg failed.\n", pci_name(np->pci_dev));
1142                         return PHY_ERROR;
1143                 }
1144         }
1145         if (np->phy_oui == PHY_OUI_REALTEK) {
1146                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1147                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1148                         return PHY_ERROR;
1149                 }
1150                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1151                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1152                         return PHY_ERROR;
1153                 }
1154                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1155                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1156                         return PHY_ERROR;
1157                 }
1158                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1159                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1160                         return PHY_ERROR;
1161                 }
1162                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1163                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1164                         return PHY_ERROR;
1165                 }
1166         }
1167
1168         /* set advertise register */
1169         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1170         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|ADVERTISE_PAUSE_ASYM|ADVERTISE_PAUSE_CAP);
1171         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1172                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
1173                 return PHY_ERROR;
1174         }
1175
1176         /* get phy interface type */
1177         phyinterface = readl(base + NvRegPhyInterface);
1178
1179         /* see if gigabit phy */
1180         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1181         if (mii_status & PHY_GIGABIT) {
1182                 np->gigabit = PHY_GIGABIT;
1183                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
1184                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1185                 if (phyinterface & PHY_RGMII)
1186                         mii_control_1000 |= ADVERTISE_1000FULL;
1187                 else
1188                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1189
1190                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1191                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1192                         return PHY_ERROR;
1193                 }
1194         }
1195         else
1196                 np->gigabit = 0;
1197
1198         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1199         mii_control |= BMCR_ANENABLE;
1200
1201         /* reset the phy
1202          * (certain phys need bmcr to be setup with reset)
1203          */
1204         if (phy_reset(dev, mii_control)) {
1205                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
1206                 return PHY_ERROR;
1207         }
1208
1209         /* phy vendor specific configuration */
1210         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
1211                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1212                 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1213                 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1214                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
1215                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1216                         return PHY_ERROR;
1217                 }
1218                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1219                 phy_reserved |= PHY_CICADA_INIT5;
1220                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
1221                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1222                         return PHY_ERROR;
1223                 }
1224         }
1225         if (np->phy_oui == PHY_OUI_CICADA) {
1226                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1227                 phy_reserved |= PHY_CICADA_INIT6;
1228                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
1229                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1230                         return PHY_ERROR;
1231                 }
1232         }
1233         if (np->phy_oui == PHY_OUI_VITESSE) {
1234                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1)) {
1235                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1236                         return PHY_ERROR;
1237                 }
1238                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2)) {
1239                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1240                         return PHY_ERROR;
1241                 }
1242                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1243                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1244                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1245                         return PHY_ERROR;
1246                 }
1247                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1248                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1249                 phy_reserved |= PHY_VITESSE_INIT3;
1250                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1251                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1252                         return PHY_ERROR;
1253                 }
1254                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4)) {
1255                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1256                         return PHY_ERROR;
1257                 }
1258                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5)) {
1259                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1260                         return PHY_ERROR;
1261                 }
1262                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1263                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1264                 phy_reserved |= PHY_VITESSE_INIT3;
1265                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1266                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1267                         return PHY_ERROR;
1268                 }
1269                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1270                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1271                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1272                         return PHY_ERROR;
1273                 }
1274                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6)) {
1275                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1276                         return PHY_ERROR;
1277                 }
1278                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7)) {
1279                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1280                         return PHY_ERROR;
1281                 }
1282                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1283                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1284                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1285                         return PHY_ERROR;
1286                 }
1287                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1288                 phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1289                 phy_reserved |= PHY_VITESSE_INIT8;
1290                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1291                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1292                         return PHY_ERROR;
1293                 }
1294                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9)) {
1295                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1296                         return PHY_ERROR;
1297                 }
1298                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10)) {
1299                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1300                         return PHY_ERROR;
1301                 }
1302         }
1303         if (np->phy_oui == PHY_OUI_REALTEK) {
1304                 /* reset could have cleared these out, set them back */
1305                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1306                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1307                         return PHY_ERROR;
1308                 }
1309                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1310                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1311                         return PHY_ERROR;
1312                 }
1313                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1314                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1315                         return PHY_ERROR;
1316                 }
1317                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1318                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1319                         return PHY_ERROR;
1320                 }
1321                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1322                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1323                         return PHY_ERROR;
1324                 }
1325         }
1326
1327         /* some phys clear out pause advertisment on reset, set it back */
1328         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1329
1330         /* restart auto negotiation */
1331         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1332         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1333         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1334                 return PHY_ERROR;
1335         }
1336
1337         return 0;
1338 }
1339
1340 static void nv_start_rx(struct net_device *dev)
1341 {
1342         struct fe_priv *np = netdev_priv(dev);
1343         u8 __iomem *base = get_hwbase(dev);
1344         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1345
1346         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
1347         /* Already running? Stop it. */
1348         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1349                 rx_ctrl &= ~NVREG_RCVCTL_START;
1350                 writel(rx_ctrl, base + NvRegReceiverControl);
1351                 pci_push(base);
1352         }
1353         writel(np->linkspeed, base + NvRegLinkSpeed);
1354         pci_push(base);
1355         rx_ctrl |= NVREG_RCVCTL_START;
1356         if (np->mac_in_use)
1357                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1358         writel(rx_ctrl, base + NvRegReceiverControl);
1359         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
1360                                 dev->name, np->duplex, np->linkspeed);
1361         pci_push(base);
1362 }
1363
1364 static void nv_stop_rx(struct net_device *dev)
1365 {
1366         struct fe_priv *np = netdev_priv(dev);
1367         u8 __iomem *base = get_hwbase(dev);
1368         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1369
1370         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
1371         if (!np->mac_in_use)
1372                 rx_ctrl &= ~NVREG_RCVCTL_START;
1373         else
1374                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1375         writel(rx_ctrl, base + NvRegReceiverControl);
1376         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1377                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
1378                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
1379
1380         udelay(NV_RXSTOP_DELAY2);
1381         if (!np->mac_in_use)
1382                 writel(0, base + NvRegLinkSpeed);
1383 }
1384
1385 static void nv_start_tx(struct net_device *dev)
1386 {
1387         struct fe_priv *np = netdev_priv(dev);
1388         u8 __iomem *base = get_hwbase(dev);
1389         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1390
1391         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
1392         tx_ctrl |= NVREG_XMITCTL_START;
1393         if (np->mac_in_use)
1394                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1395         writel(tx_ctrl, base + NvRegTransmitterControl);
1396         pci_push(base);
1397 }
1398
1399 static void nv_stop_tx(struct net_device *dev)
1400 {
1401         struct fe_priv *np = netdev_priv(dev);
1402         u8 __iomem *base = get_hwbase(dev);
1403         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1404
1405         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
1406         if (!np->mac_in_use)
1407                 tx_ctrl &= ~NVREG_XMITCTL_START;
1408         else
1409                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1410         writel(tx_ctrl, base + NvRegTransmitterControl);
1411         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1412                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
1413                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
1414
1415         udelay(NV_TXSTOP_DELAY2);
1416         if (!np->mac_in_use)
1417                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1418                        base + NvRegTransmitPoll);
1419 }
1420
1421 static void nv_txrx_reset(struct net_device *dev)
1422 {
1423         struct fe_priv *np = netdev_priv(dev);
1424         u8 __iomem *base = get_hwbase(dev);
1425
1426         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
1427         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1428         pci_push(base);
1429         udelay(NV_TXRX_RESET_DELAY);
1430         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1431         pci_push(base);
1432 }
1433
1434 static void nv_mac_reset(struct net_device *dev)
1435 {
1436         struct fe_priv *np = netdev_priv(dev);
1437         u8 __iomem *base = get_hwbase(dev);
1438         u32 temp1, temp2, temp3;
1439
1440         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
1441
1442         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1443         pci_push(base);
1444
1445         /* save registers since they will be cleared on reset */
1446         temp1 = readl(base + NvRegMacAddrA);
1447         temp2 = readl(base + NvRegMacAddrB);
1448         temp3 = readl(base + NvRegTransmitPoll);
1449
1450         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1451         pci_push(base);
1452         udelay(NV_MAC_RESET_DELAY);
1453         writel(0, base + NvRegMacReset);
1454         pci_push(base);
1455         udelay(NV_MAC_RESET_DELAY);
1456
1457         /* restore saved registers */
1458         writel(temp1, base + NvRegMacAddrA);
1459         writel(temp2, base + NvRegMacAddrB);
1460         writel(temp3, base + NvRegTransmitPoll);
1461
1462         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1463         pci_push(base);
1464 }
1465
1466 static void nv_get_hw_stats(struct net_device *dev)
1467 {
1468         struct fe_priv *np = netdev_priv(dev);
1469         u8 __iomem *base = get_hwbase(dev);
1470
1471         np->estats.tx_bytes += readl(base + NvRegTxCnt);
1472         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1473         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1474         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1475         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1476         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1477         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1478         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1479         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1480         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1481         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1482         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1483         np->estats.rx_runt += readl(base + NvRegRxRunt);
1484         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1485         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1486         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1487         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1488         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1489         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1490         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1491         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1492         np->estats.rx_packets =
1493                 np->estats.rx_unicast +
1494                 np->estats.rx_multicast +
1495                 np->estats.rx_broadcast;
1496         np->estats.rx_errors_total =
1497                 np->estats.rx_crc_errors +
1498                 np->estats.rx_over_errors +
1499                 np->estats.rx_frame_error +
1500                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1501                 np->estats.rx_late_collision +
1502                 np->estats.rx_runt +
1503                 np->estats.rx_frame_too_long;
1504         np->estats.tx_errors_total =
1505                 np->estats.tx_late_collision +
1506                 np->estats.tx_fifo_errors +
1507                 np->estats.tx_carrier_errors +
1508                 np->estats.tx_excess_deferral +
1509                 np->estats.tx_retry_error;
1510
1511         if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1512                 np->estats.tx_deferral += readl(base + NvRegTxDef);
1513                 np->estats.tx_packets += readl(base + NvRegTxFrame);
1514                 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1515                 np->estats.tx_pause += readl(base + NvRegTxPause);
1516                 np->estats.rx_pause += readl(base + NvRegRxPause);
1517                 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1518         }
1519 }
1520
1521 /*
1522  * nv_get_stats: dev->get_stats function
1523  * Get latest stats value from the nic.
1524  * Called with read_lock(&dev_base_lock) held for read -
1525  * only synchronized against unregister_netdevice.
1526  */
1527 static struct net_device_stats *nv_get_stats(struct net_device *dev)
1528 {
1529         struct fe_priv *np = netdev_priv(dev);
1530
1531         /* If the nic supports hw counters then retrieve latest values */
1532         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2)) {
1533                 nv_get_hw_stats(dev);
1534
1535                 /* copy to net_device stats */
1536                 dev->stats.tx_bytes = np->estats.tx_bytes;
1537                 dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
1538                 dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
1539                 dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
1540                 dev->stats.rx_over_errors = np->estats.rx_over_errors;
1541                 dev->stats.rx_errors = np->estats.rx_errors_total;
1542                 dev->stats.tx_errors = np->estats.tx_errors_total;
1543         }
1544
1545         return &dev->stats;
1546 }
1547
1548 /*
1549  * nv_alloc_rx: fill rx ring entries.
1550  * Return 1 if the allocations for the skbs failed and the
1551  * rx engine is without Available descriptors
1552  */
1553 static int nv_alloc_rx(struct net_device *dev)
1554 {
1555         struct fe_priv *np = netdev_priv(dev);
1556         struct ring_desc* less_rx;
1557
1558         less_rx = np->get_rx.orig;
1559         if (less_rx-- == np->first_rx.orig)
1560                 less_rx = np->last_rx.orig;
1561
1562         while (np->put_rx.orig != less_rx) {
1563                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1564                 if (skb) {
1565                         np->put_rx_ctx->skb = skb;
1566                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1567                                                              skb->data,
1568                                                              skb_tailroom(skb),
1569                                                              PCI_DMA_FROMDEVICE);
1570                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1571                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1572                         wmb();
1573                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1574                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1575                                 np->put_rx.orig = np->first_rx.orig;
1576                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1577                                 np->put_rx_ctx = np->first_rx_ctx;
1578                 } else {
1579                         return 1;
1580                 }
1581         }
1582         return 0;
1583 }
1584
1585 static int nv_alloc_rx_optimized(struct net_device *dev)
1586 {
1587         struct fe_priv *np = netdev_priv(dev);
1588         struct ring_desc_ex* less_rx;
1589
1590         less_rx = np->get_rx.ex;
1591         if (less_rx-- == np->first_rx.ex)
1592                 less_rx = np->last_rx.ex;
1593
1594         while (np->put_rx.ex != less_rx) {
1595                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1596                 if (skb) {
1597                         np->put_rx_ctx->skb = skb;
1598                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1599                                                              skb->data,
1600                                                              skb_tailroom(skb),
1601                                                              PCI_DMA_FROMDEVICE);
1602                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1603                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1604                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1605                         wmb();
1606                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1607                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1608                                 np->put_rx.ex = np->first_rx.ex;
1609                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1610                                 np->put_rx_ctx = np->first_rx_ctx;
1611                 } else {
1612                         return 1;
1613                 }
1614         }
1615         return 0;
1616 }
1617
1618 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1619 #ifdef CONFIG_FORCEDETH_NAPI
1620 static void nv_do_rx_refill(unsigned long data)
1621 {
1622         struct net_device *dev = (struct net_device *) data;
1623         struct fe_priv *np = netdev_priv(dev);
1624
1625         /* Just reschedule NAPI rx processing */
1626         netif_rx_schedule(dev, &np->napi);
1627 }
1628 #else
1629 static void nv_do_rx_refill(unsigned long data)
1630 {
1631         struct net_device *dev = (struct net_device *) data;
1632         struct fe_priv *np = netdev_priv(dev);
1633         int retcode;
1634
1635         if (!using_multi_irqs(dev)) {
1636                 if (np->msi_flags & NV_MSI_X_ENABLED)
1637                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1638                 else
1639                         disable_irq(np->pci_dev->irq);
1640         } else {
1641                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1642         }
1643         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1644                 retcode = nv_alloc_rx(dev);
1645         else
1646                 retcode = nv_alloc_rx_optimized(dev);
1647         if (retcode) {
1648                 spin_lock_irq(&np->lock);
1649                 if (!np->in_shutdown)
1650                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1651                 spin_unlock_irq(&np->lock);
1652         }
1653         if (!using_multi_irqs(dev)) {
1654                 if (np->msi_flags & NV_MSI_X_ENABLED)
1655                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1656                 else
1657                         enable_irq(np->pci_dev->irq);
1658         } else {
1659                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1660         }
1661 }
1662 #endif
1663
1664 static void nv_init_rx(struct net_device *dev)
1665 {
1666         struct fe_priv *np = netdev_priv(dev);
1667         int i;
1668         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1669         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1670                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1671         else
1672                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1673         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1674         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1675
1676         for (i = 0; i < np->rx_ring_size; i++) {
1677                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1678                         np->rx_ring.orig[i].flaglen = 0;
1679                         np->rx_ring.orig[i].buf = 0;
1680                 } else {
1681                         np->rx_ring.ex[i].flaglen = 0;
1682                         np->rx_ring.ex[i].txvlan = 0;
1683                         np->rx_ring.ex[i].bufhigh = 0;
1684                         np->rx_ring.ex[i].buflow = 0;
1685                 }
1686                 np->rx_skb[i].skb = NULL;
1687                 np->rx_skb[i].dma = 0;
1688         }
1689 }
1690
1691 static void nv_init_tx(struct net_device *dev)
1692 {
1693         struct fe_priv *np = netdev_priv(dev);
1694         int i;
1695         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1696         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1697                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1698         else
1699                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1700         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1701         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1702
1703         for (i = 0; i < np->tx_ring_size; i++) {
1704                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1705                         np->tx_ring.orig[i].flaglen = 0;
1706                         np->tx_ring.orig[i].buf = 0;
1707                 } else {
1708                         np->tx_ring.ex[i].flaglen = 0;
1709                         np->tx_ring.ex[i].txvlan = 0;
1710                         np->tx_ring.ex[i].bufhigh = 0;
1711                         np->tx_ring.ex[i].buflow = 0;
1712                 }
1713                 np->tx_skb[i].skb = NULL;
1714                 np->tx_skb[i].dma = 0;
1715         }
1716 }
1717
1718 static int nv_init_ring(struct net_device *dev)
1719 {
1720         struct fe_priv *np = netdev_priv(dev);
1721
1722         nv_init_tx(dev);
1723         nv_init_rx(dev);
1724         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1725                 return nv_alloc_rx(dev);
1726         else
1727                 return nv_alloc_rx_optimized(dev);
1728 }
1729
1730 static int nv_release_txskb(struct net_device *dev, struct nv_skb_map* tx_skb)
1731 {
1732         struct fe_priv *np = netdev_priv(dev);
1733
1734         if (tx_skb->dma) {
1735                 pci_unmap_page(np->pci_dev, tx_skb->dma,
1736                                tx_skb->dma_len,
1737                                PCI_DMA_TODEVICE);
1738                 tx_skb->dma = 0;
1739         }
1740         if (tx_skb->skb) {
1741                 dev_kfree_skb_any(tx_skb->skb);
1742                 tx_skb->skb = NULL;
1743                 return 1;
1744         } else {
1745                 return 0;
1746         }
1747 }
1748
1749 static void nv_drain_tx(struct net_device *dev)
1750 {
1751         struct fe_priv *np = netdev_priv(dev);
1752         unsigned int i;
1753
1754         for (i = 0; i < np->tx_ring_size; i++) {
1755                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1756                         np->tx_ring.orig[i].flaglen = 0;
1757                         np->tx_ring.orig[i].buf = 0;
1758                 } else {
1759                         np->tx_ring.ex[i].flaglen = 0;
1760                         np->tx_ring.ex[i].txvlan = 0;
1761                         np->tx_ring.ex[i].bufhigh = 0;
1762                         np->tx_ring.ex[i].buflow = 0;
1763                 }
1764                 if (nv_release_txskb(dev, &np->tx_skb[i]))
1765                         dev->stats.tx_dropped++;
1766         }
1767 }
1768
1769 static void nv_drain_rx(struct net_device *dev)
1770 {
1771         struct fe_priv *np = netdev_priv(dev);
1772         int i;
1773
1774         for (i = 0; i < np->rx_ring_size; i++) {
1775                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1776                         np->rx_ring.orig[i].flaglen = 0;
1777                         np->rx_ring.orig[i].buf = 0;
1778                 } else {
1779                         np->rx_ring.ex[i].flaglen = 0;
1780                         np->rx_ring.ex[i].txvlan = 0;
1781                         np->rx_ring.ex[i].bufhigh = 0;
1782                         np->rx_ring.ex[i].buflow = 0;
1783                 }
1784                 wmb();
1785                 if (np->rx_skb[i].skb) {
1786                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
1787                                          (skb_end_pointer(np->rx_skb[i].skb) -
1788                                           np->rx_skb[i].skb->data),
1789                                          PCI_DMA_FROMDEVICE);
1790                         dev_kfree_skb(np->rx_skb[i].skb);
1791                         np->rx_skb[i].skb = NULL;
1792                 }
1793         }
1794 }
1795
1796 static void drain_ring(struct net_device *dev)
1797 {
1798         nv_drain_tx(dev);
1799         nv_drain_rx(dev);
1800 }
1801
1802 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
1803 {
1804         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
1805 }
1806
1807 /*
1808  * nv_start_xmit: dev->hard_start_xmit function
1809  * Called with netif_tx_lock held.
1810  */
1811 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1812 {
1813         struct fe_priv *np = netdev_priv(dev);
1814         u32 tx_flags = 0;
1815         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
1816         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1817         unsigned int i;
1818         u32 offset = 0;
1819         u32 bcnt;
1820         u32 size = skb->len-skb->data_len;
1821         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1822         u32 empty_slots;
1823         struct ring_desc* put_tx;
1824         struct ring_desc* start_tx;
1825         struct ring_desc* prev_tx;
1826         struct nv_skb_map* prev_tx_ctx;
1827
1828         /* add fragments to entries count */
1829         for (i = 0; i < fragments; i++) {
1830                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1831                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1832         }
1833
1834         empty_slots = nv_get_empty_tx_slots(np);
1835         if (unlikely(empty_slots <= entries)) {
1836                 spin_lock_irq(&np->lock);
1837                 netif_stop_queue(dev);
1838                 np->tx_stop = 1;
1839                 spin_unlock_irq(&np->lock);
1840                 return NETDEV_TX_BUSY;
1841         }
1842
1843         start_tx = put_tx = np->put_tx.orig;
1844
1845         /* setup the header buffer */
1846         do {
1847                 prev_tx = put_tx;
1848                 prev_tx_ctx = np->put_tx_ctx;
1849                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1850                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1851                                                 PCI_DMA_TODEVICE);
1852                 np->put_tx_ctx->dma_len = bcnt;
1853                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
1854                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1855
1856                 tx_flags = np->tx_flags;
1857                 offset += bcnt;
1858                 size -= bcnt;
1859                 if (unlikely(put_tx++ == np->last_tx.orig))
1860                         put_tx = np->first_tx.orig;
1861                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1862                         np->put_tx_ctx = np->first_tx_ctx;
1863         } while (size);
1864
1865         /* setup the fragments */
1866         for (i = 0; i < fragments; i++) {
1867                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1868                 u32 size = frag->size;
1869                 offset = 0;
1870
1871                 do {
1872                         prev_tx = put_tx;
1873                         prev_tx_ctx = np->put_tx_ctx;
1874                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1875                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1876                                                            PCI_DMA_TODEVICE);
1877                         np->put_tx_ctx->dma_len = bcnt;
1878                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
1879                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1880
1881                         offset += bcnt;
1882                         size -= bcnt;
1883                         if (unlikely(put_tx++ == np->last_tx.orig))
1884                                 put_tx = np->first_tx.orig;
1885                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1886                                 np->put_tx_ctx = np->first_tx_ctx;
1887                 } while (size);
1888         }
1889
1890         /* set last fragment flag  */
1891         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
1892
1893         /* save skb in this slot's context area */
1894         prev_tx_ctx->skb = skb;
1895
1896         if (skb_is_gso(skb))
1897                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
1898         else
1899                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
1900                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
1901
1902         spin_lock_irq(&np->lock);
1903
1904         /* set tx flags */
1905         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
1906         np->put_tx.orig = put_tx;
1907
1908         spin_unlock_irq(&np->lock);
1909
1910         dprintk(KERN_DEBUG "%s: nv_start_xmit: entries %d queued for transmission. tx_flags_extra: %x\n",
1911                 dev->name, entries, tx_flags_extra);
1912         {
1913                 int j;
1914                 for (j=0; j<64; j++) {
1915                         if ((j%16) == 0)
1916                                 dprintk("\n%03x:", j);
1917                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
1918                 }
1919                 dprintk("\n");
1920         }
1921
1922         dev->trans_start = jiffies;
1923         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1924         return NETDEV_TX_OK;
1925 }
1926
1927 static int nv_start_xmit_optimized(struct sk_buff *skb, struct net_device *dev)
1928 {
1929         struct fe_priv *np = netdev_priv(dev);
1930         u32 tx_flags = 0;
1931         u32 tx_flags_extra;
1932         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1933         unsigned int i;
1934         u32 offset = 0;
1935         u32 bcnt;
1936         u32 size = skb->len-skb->data_len;
1937         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1938         u32 empty_slots;
1939         struct ring_desc_ex* put_tx;
1940         struct ring_desc_ex* start_tx;
1941         struct ring_desc_ex* prev_tx;
1942         struct nv_skb_map* prev_tx_ctx;
1943
1944         /* add fragments to entries count */
1945         for (i = 0; i < fragments; i++) {
1946                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1947                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1948         }
1949
1950         empty_slots = nv_get_empty_tx_slots(np);
1951         if (unlikely(empty_slots <= entries)) {
1952                 spin_lock_irq(&np->lock);
1953                 netif_stop_queue(dev);
1954                 np->tx_stop = 1;
1955                 spin_unlock_irq(&np->lock);
1956                 return NETDEV_TX_BUSY;
1957         }
1958
1959         start_tx = put_tx = np->put_tx.ex;
1960
1961         /* setup the header buffer */
1962         do {
1963                 prev_tx = put_tx;
1964                 prev_tx_ctx = np->put_tx_ctx;
1965                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1966                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1967                                                 PCI_DMA_TODEVICE);
1968                 np->put_tx_ctx->dma_len = bcnt;
1969                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
1970                 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
1971                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1972
1973                 tx_flags = NV_TX2_VALID;
1974                 offset += bcnt;
1975                 size -= bcnt;
1976                 if (unlikely(put_tx++ == np->last_tx.ex))
1977                         put_tx = np->first_tx.ex;
1978                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1979                         np->put_tx_ctx = np->first_tx_ctx;
1980         } while (size);
1981
1982         /* setup the fragments */
1983         for (i = 0; i < fragments; i++) {
1984                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1985                 u32 size = frag->size;
1986                 offset = 0;
1987
1988                 do {
1989                         prev_tx = put_tx;
1990                         prev_tx_ctx = np->put_tx_ctx;
1991                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1992                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1993                                                            PCI_DMA_TODEVICE);
1994                         np->put_tx_ctx->dma_len = bcnt;
1995                         put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
1996                         put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
1997                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1998
1999                         offset += bcnt;
2000                         size -= bcnt;
2001                         if (unlikely(put_tx++ == np->last_tx.ex))
2002                                 put_tx = np->first_tx.ex;
2003                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2004                                 np->put_tx_ctx = np->first_tx_ctx;
2005                 } while (size);
2006         }
2007
2008         /* set last fragment flag  */
2009         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2010
2011         /* save skb in this slot's context area */
2012         prev_tx_ctx->skb = skb;
2013
2014         if (skb_is_gso(skb))
2015                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2016         else
2017                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2018                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2019
2020         /* vlan tag */
2021         if (likely(!np->vlangrp)) {
2022                 start_tx->txvlan = 0;
2023         } else {
2024                 if (vlan_tx_tag_present(skb))
2025                         start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb));
2026                 else
2027                         start_tx->txvlan = 0;
2028         }
2029
2030         spin_lock_irq(&np->lock);
2031
2032         /* set tx flags */
2033         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2034         np->put_tx.ex = put_tx;
2035
2036         spin_unlock_irq(&np->lock);
2037
2038         dprintk(KERN_DEBUG "%s: nv_start_xmit_optimized: entries %d queued for transmission. tx_flags_extra: %x\n",
2039                 dev->name, entries, tx_flags_extra);
2040         {
2041                 int j;
2042                 for (j=0; j<64; j++) {
2043                         if ((j%16) == 0)
2044                                 dprintk("\n%03x:", j);
2045                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2046                 }
2047                 dprintk("\n");
2048         }
2049
2050         dev->trans_start = jiffies;
2051         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2052         return NETDEV_TX_OK;
2053 }
2054
2055 /*
2056  * nv_tx_done: check for completed packets, release the skbs.
2057  *
2058  * Caller must own np->lock.
2059  */
2060 static void nv_tx_done(struct net_device *dev)
2061 {
2062         struct fe_priv *np = netdev_priv(dev);
2063         u32 flags;
2064         struct ring_desc* orig_get_tx = np->get_tx.orig;
2065
2066         while ((np->get_tx.orig != np->put_tx.orig) &&
2067                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID)) {
2068
2069                 dprintk(KERN_DEBUG "%s: nv_tx_done: flags 0x%x.\n",
2070                                         dev->name, flags);
2071
2072                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2073                                np->get_tx_ctx->dma_len,
2074                                PCI_DMA_TODEVICE);
2075                 np->get_tx_ctx->dma = 0;
2076
2077                 if (np->desc_ver == DESC_VER_1) {
2078                         if (flags & NV_TX_LASTPACKET) {
2079                                 if (flags & NV_TX_ERROR) {
2080                                         if (flags & NV_TX_UNDERFLOW)
2081                                                 dev->stats.tx_fifo_errors++;
2082                                         if (flags & NV_TX_CARRIERLOST)
2083                                                 dev->stats.tx_carrier_errors++;
2084                                         dev->stats.tx_errors++;
2085                                 } else {
2086                                         dev->stats.tx_packets++;
2087                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2088                                 }
2089                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2090                                 np->get_tx_ctx->skb = NULL;
2091                         }
2092                 } else {
2093                         if (flags & NV_TX2_LASTPACKET) {
2094                                 if (flags & NV_TX2_ERROR) {
2095                                         if (flags & NV_TX2_UNDERFLOW)
2096                                                 dev->stats.tx_fifo_errors++;
2097                                         if (flags & NV_TX2_CARRIERLOST)
2098                                                 dev->stats.tx_carrier_errors++;
2099                                         dev->stats.tx_errors++;
2100                                 } else {
2101                                         dev->stats.tx_packets++;
2102                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2103                                 }
2104                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2105                                 np->get_tx_ctx->skb = NULL;
2106                         }
2107                 }
2108                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2109                         np->get_tx.orig = np->first_tx.orig;
2110                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2111                         np->get_tx_ctx = np->first_tx_ctx;
2112         }
2113         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2114                 np->tx_stop = 0;
2115                 netif_wake_queue(dev);
2116         }
2117 }
2118
2119 static void nv_tx_done_optimized(struct net_device *dev, int limit)
2120 {
2121         struct fe_priv *np = netdev_priv(dev);
2122         u32 flags;
2123         struct ring_desc_ex* orig_get_tx = np->get_tx.ex;
2124
2125         while ((np->get_tx.ex != np->put_tx.ex) &&
2126                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX_VALID) &&
2127                (limit-- > 0)) {
2128
2129                 dprintk(KERN_DEBUG "%s: nv_tx_done_optimized: flags 0x%x.\n",
2130                                         dev->name, flags);
2131
2132                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2133                                np->get_tx_ctx->dma_len,
2134                                PCI_DMA_TODEVICE);
2135                 np->get_tx_ctx->dma = 0;
2136
2137                 if (flags & NV_TX2_LASTPACKET) {
2138                         if (!(flags & NV_TX2_ERROR))
2139                                 dev->stats.tx_packets++;
2140                         dev_kfree_skb_any(np->get_tx_ctx->skb);
2141                         np->get_tx_ctx->skb = NULL;
2142                 }
2143                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2144                         np->get_tx.ex = np->first_tx.ex;
2145                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2146                         np->get_tx_ctx = np->first_tx_ctx;
2147         }
2148         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2149                 np->tx_stop = 0;
2150                 netif_wake_queue(dev);
2151         }
2152 }
2153
2154 /*
2155  * nv_tx_timeout: dev->tx_timeout function
2156  * Called with netif_tx_lock held.
2157  */
2158 static void nv_tx_timeout(struct net_device *dev)
2159 {
2160         struct fe_priv *np = netdev_priv(dev);
2161         u8 __iomem *base = get_hwbase(dev);
2162         u32 status;
2163
2164         if (np->msi_flags & NV_MSI_X_ENABLED)
2165                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2166         else
2167                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2168
2169         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
2170
2171         {
2172                 int i;
2173
2174                 printk(KERN_INFO "%s: Ring at %lx\n",
2175                        dev->name, (unsigned long)np->ring_addr);
2176                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
2177                 for (i=0;i<=np->register_size;i+= 32) {
2178                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
2179                                         i,
2180                                         readl(base + i + 0), readl(base + i + 4),
2181                                         readl(base + i + 8), readl(base + i + 12),
2182                                         readl(base + i + 16), readl(base + i + 20),
2183                                         readl(base + i + 24), readl(base + i + 28));
2184                 }
2185                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
2186                 for (i=0;i<np->tx_ring_size;i+= 4) {
2187                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
2188                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
2189                                        i,
2190                                        le32_to_cpu(np->tx_ring.orig[i].buf),
2191                                        le32_to_cpu(np->tx_ring.orig[i].flaglen),
2192                                        le32_to_cpu(np->tx_ring.orig[i+1].buf),
2193                                        le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2194                                        le32_to_cpu(np->tx_ring.orig[i+2].buf),
2195                                        le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2196                                        le32_to_cpu(np->tx_ring.orig[i+3].buf),
2197                                        le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2198                         } else {
2199                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
2200                                        i,
2201                                        le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2202                                        le32_to_cpu(np->tx_ring.ex[i].buflow),
2203                                        le32_to_cpu(np->tx_ring.ex[i].flaglen),
2204                                        le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2205                                        le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2206                                        le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2207                                        le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2208                                        le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2209                                        le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2210                                        le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2211                                        le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2212                                        le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2213                         }
2214                 }
2215         }
2216
2217         spin_lock_irq(&np->lock);
2218
2219         /* 1) stop tx engine */
2220         nv_stop_tx(dev);
2221
2222         /* 2) check that the packets were not sent already: */
2223         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
2224                 nv_tx_done(dev);
2225         else
2226                 nv_tx_done_optimized(dev, np->tx_ring_size);
2227
2228         /* 3) if there are dead entries: clear everything */
2229         if (np->get_tx_ctx != np->put_tx_ctx) {
2230                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
2231                 nv_drain_tx(dev);
2232                 nv_init_tx(dev);
2233                 setup_hw_rings(dev, NV_SETUP_TX_RING);
2234         }
2235
2236         netif_wake_queue(dev);
2237
2238         /* 4) restart tx engine */
2239         nv_start_tx(dev);
2240         spin_unlock_irq(&np->lock);
2241 }
2242
2243 /*
2244  * Called when the nic notices a mismatch between the actual data len on the
2245  * wire and the len indicated in the 802 header
2246  */
2247 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2248 {
2249         int hdrlen;     /* length of the 802 header */
2250         int protolen;   /* length as stored in the proto field */
2251
2252         /* 1) calculate len according to header */
2253         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2254                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
2255                 hdrlen = VLAN_HLEN;
2256         } else {
2257                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
2258                 hdrlen = ETH_HLEN;
2259         }
2260         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
2261                                 dev->name, datalen, protolen, hdrlen);
2262         if (protolen > ETH_DATA_LEN)
2263                 return datalen; /* Value in proto field not a len, no checks possible */
2264
2265         protolen += hdrlen;
2266         /* consistency checks: */
2267         if (datalen > ETH_ZLEN) {
2268                 if (datalen >= protolen) {
2269                         /* more data on wire than in 802 header, trim of
2270                          * additional data.
2271                          */
2272                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2273                                         dev->name, protolen);
2274                         return protolen;
2275                 } else {
2276                         /* less data on wire than mentioned in header.
2277                          * Discard the packet.
2278                          */
2279                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
2280                                         dev->name);
2281                         return -1;
2282                 }
2283         } else {
2284                 /* short packet. Accept only if 802 values are also short */
2285                 if (protolen > ETH_ZLEN) {
2286                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
2287                                         dev->name);
2288                         return -1;
2289                 }
2290                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2291                                 dev->name, datalen);
2292                 return datalen;
2293         }
2294 }
2295
2296 static int nv_rx_process(struct net_device *dev, int limit)
2297 {
2298         struct fe_priv *np = netdev_priv(dev);
2299         u32 flags;
2300         int rx_work = 0;
2301         struct sk_buff *skb;
2302         int len;
2303
2304         while((np->get_rx.orig != np->put_rx.orig) &&
2305               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2306                 (rx_work < limit)) {
2307
2308                 dprintk(KERN_DEBUG "%s: nv_rx_process: flags 0x%x.\n",
2309                                         dev->name, flags);
2310
2311                 /*
2312                  * the packet is for us - immediately tear down the pci mapping.
2313                  * TODO: check if a prefetch of the first cacheline improves
2314                  * the performance.
2315                  */
2316                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2317                                 np->get_rx_ctx->dma_len,
2318                                 PCI_DMA_FROMDEVICE);
2319                 skb = np->get_rx_ctx->skb;
2320                 np->get_rx_ctx->skb = NULL;
2321
2322                 {
2323                         int j;
2324                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2325                         for (j=0; j<64; j++) {
2326                                 if ((j%16) == 0)
2327                                         dprintk("\n%03x:", j);
2328                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2329                         }
2330                         dprintk("\n");
2331                 }
2332                 /* look at what we actually got: */
2333                 if (np->desc_ver == DESC_VER_1) {
2334                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2335                                 len = flags & LEN_MASK_V1;
2336                                 if (unlikely(flags & NV_RX_ERROR)) {
2337                                         if (flags & NV_RX_ERROR4) {
2338                                                 len = nv_getlen(dev, skb->data, len);
2339                                                 if (len < 0) {
2340                                                         dev->stats.rx_errors++;
2341                                                         dev_kfree_skb(skb);
2342                                                         goto next_pkt;
2343                                                 }
2344                                         }
2345                                         /* framing errors are soft errors */
2346                                         else if (flags & NV_RX_FRAMINGERR) {
2347                                                 if (flags & NV_RX_SUBSTRACT1) {
2348                                                         len--;
2349                                                 }
2350                                         }
2351                                         /* the rest are hard errors */
2352                                         else {
2353                                                 if (flags & NV_RX_MISSEDFRAME)
2354                                                         dev->stats.rx_missed_errors++;
2355                                                 if (flags & NV_RX_CRCERR)
2356                                                         dev->stats.rx_crc_errors++;
2357                                                 if (flags & NV_RX_OVERFLOW)
2358                                                         dev->stats.rx_over_errors++;
2359                                                 dev->stats.rx_errors++;
2360                                                 dev_kfree_skb(skb);
2361                                                 goto next_pkt;
2362                                         }
2363                                 }
2364                         } else {
2365                                 dev_kfree_skb(skb);
2366                                 goto next_pkt;
2367                         }
2368                 } else {
2369                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2370                                 len = flags & LEN_MASK_V2;
2371                                 if (unlikely(flags & NV_RX2_ERROR)) {
2372                                         if (flags & NV_RX2_ERROR4) {
2373                                                 len = nv_getlen(dev, skb->data, len);
2374                                                 if (len < 0) {
2375                                                         dev->stats.rx_errors++;
2376                                                         dev_kfree_skb(skb);
2377                                                         goto next_pkt;
2378                                                 }
2379                                         }
2380                                         /* framing errors are soft errors */
2381                                         else if (flags & NV_RX2_FRAMINGERR) {
2382                                                 if (flags & NV_RX2_SUBSTRACT1) {
2383                                                         len--;
2384                                                 }
2385                                         }
2386                                         /* the rest are hard errors */
2387                                         else {
2388                                                 if (flags & NV_RX2_CRCERR)
2389                                                         dev->stats.rx_crc_errors++;
2390                                                 if (flags & NV_RX2_OVERFLOW)
2391                                                         dev->stats.rx_over_errors++;
2392                                                 dev->stats.rx_errors++;
2393                                                 dev_kfree_skb(skb);
2394                                                 goto next_pkt;
2395                                         }
2396                                 }
2397                                 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2398                                     ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2399                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2400                         } else {
2401                                 dev_kfree_skb(skb);
2402                                 goto next_pkt;
2403                         }
2404                 }
2405                 /* got a valid packet - forward it to the network core */
2406                 skb_put(skb, len);
2407                 skb->protocol = eth_type_trans(skb, dev);
2408                 dprintk(KERN_DEBUG "%s: nv_rx_process: %d bytes, proto %d accepted.\n",
2409                                         dev->name, len, skb->protocol);
2410 #ifdef CONFIG_FORCEDETH_NAPI
2411                 netif_receive_skb(skb);
2412 #else
2413                 netif_rx(skb);
2414 #endif
2415                 dev->last_rx = jiffies;
2416                 dev->stats.rx_packets++;
2417                 dev->stats.rx_bytes += len;
2418 next_pkt:
2419                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2420                         np->get_rx.orig = np->first_rx.orig;
2421                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2422                         np->get_rx_ctx = np->first_rx_ctx;
2423
2424                 rx_work++;
2425         }
2426
2427         return rx_work;
2428 }
2429
2430 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2431 {
2432         struct fe_priv *np = netdev_priv(dev);
2433         u32 flags;
2434         u32 vlanflags = 0;
2435         int rx_work = 0;
2436         struct sk_buff *skb;
2437         int len;
2438
2439         while((np->get_rx.ex != np->put_rx.ex) &&
2440               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2441               (rx_work < limit)) {
2442
2443                 dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: flags 0x%x.\n",
2444                                         dev->name, flags);
2445
2446                 /*
2447                  * the packet is for us - immediately tear down the pci mapping.
2448                  * TODO: check if a prefetch of the first cacheline improves
2449                  * the performance.
2450                  */
2451                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2452                                 np->get_rx_ctx->dma_len,
2453                                 PCI_DMA_FROMDEVICE);
2454                 skb = np->get_rx_ctx->skb;
2455                 np->get_rx_ctx->skb = NULL;
2456
2457                 {
2458                         int j;
2459                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2460                         for (j=0; j<64; j++) {
2461                                 if ((j%16) == 0)
2462                                         dprintk("\n%03x:", j);
2463                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2464                         }
2465                         dprintk("\n");
2466                 }
2467                 /* look at what we actually got: */
2468                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2469                         len = flags & LEN_MASK_V2;
2470                         if (unlikely(flags & NV_RX2_ERROR)) {
2471                                 if (flags & NV_RX2_ERROR4) {
2472                                         len = nv_getlen(dev, skb->data, len);
2473                                         if (len < 0) {
2474                                                 dev_kfree_skb(skb);
2475                                                 goto next_pkt;
2476                                         }
2477                                 }
2478                                 /* framing errors are soft errors */
2479                                 else if (flags & NV_RX2_FRAMINGERR) {
2480                                         if (flags & NV_RX2_SUBSTRACT1) {
2481                                                 len--;
2482                                         }
2483                                 }
2484                                 /* the rest are hard errors */
2485                                 else {
2486                                         dev_kfree_skb(skb);
2487                                         goto next_pkt;
2488                                 }
2489                         }
2490
2491                         if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2492                             ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2493                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2494
2495                         /* got a valid packet - forward it to the network core */
2496                         skb_put(skb, len);
2497                         skb->protocol = eth_type_trans(skb, dev);
2498                         prefetch(skb->data);
2499
2500                         dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: %d bytes, proto %d accepted.\n",
2501                                 dev->name, len, skb->protocol);
2502
2503                         if (likely(!np->vlangrp)) {
2504 #ifdef CONFIG_FORCEDETH_NAPI
2505                                 netif_receive_skb(skb);
2506 #else
2507                                 netif_rx(skb);
2508 #endif
2509                         } else {
2510                                 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2511                                 if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2512 #ifdef CONFIG_FORCEDETH_NAPI
2513                                         vlan_hwaccel_receive_skb(skb, np->vlangrp,
2514                                                                  vlanflags & NV_RX3_VLAN_TAG_MASK);
2515 #else
2516                                         vlan_hwaccel_rx(skb, np->vlangrp,
2517                                                         vlanflags & NV_RX3_VLAN_TAG_MASK);
2518 #endif
2519                                 } else {
2520 #ifdef CONFIG_FORCEDETH_NAPI
2521                                         netif_receive_skb(skb);
2522 #else
2523                                         netif_rx(skb);
2524 #endif
2525                                 }
2526                         }
2527
2528                         dev->last_rx = jiffies;
2529                         dev->stats.rx_packets++;
2530                         dev->stats.rx_bytes += len;
2531                 } else {
2532                         dev_kfree_skb(skb);
2533                 }
2534 next_pkt:
2535                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2536                         np->get_rx.ex = np->first_rx.ex;
2537                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2538                         np->get_rx_ctx = np->first_rx_ctx;
2539
2540                 rx_work++;
2541         }
2542
2543         return rx_work;
2544 }
2545
2546 static void set_bufsize(struct net_device *dev)
2547 {
2548         struct fe_priv *np = netdev_priv(dev);
2549
2550         if (dev->mtu <= ETH_DATA_LEN)
2551                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2552         else
2553                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2554 }
2555
2556 /*
2557  * nv_change_mtu: dev->change_mtu function
2558  * Called with dev_base_lock held for read.
2559  */
2560 static int nv_change_mtu(struct net_device *dev, int new_mtu)
2561 {
2562         struct fe_priv *np = netdev_priv(dev);
2563         int old_mtu;
2564
2565         if (new_mtu < 64 || new_mtu > np->pkt_limit)
2566                 return -EINVAL;
2567
2568         old_mtu = dev->mtu;
2569         dev->mtu = new_mtu;
2570
2571         /* return early if the buffer sizes will not change */
2572         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2573                 return 0;
2574         if (old_mtu == new_mtu)
2575                 return 0;
2576
2577         /* synchronized against open : rtnl_lock() held by caller */
2578         if (netif_running(dev)) {
2579                 u8 __iomem *base = get_hwbase(dev);
2580                 /*
2581                  * It seems that the nic preloads valid ring entries into an
2582                  * internal buffer. The procedure for flushing everything is
2583                  * guessed, there is probably a simpler approach.
2584                  * Changing the MTU is a rare event, it shouldn't matter.
2585                  */
2586                 nv_disable_irq(dev);
2587                 netif_tx_lock_bh(dev);
2588                 spin_lock(&np->lock);
2589                 /* stop engines */
2590                 nv_stop_rx(dev);
2591                 nv_stop_tx(dev);
2592                 nv_txrx_reset(dev);
2593                 /* drain rx queue */
2594                 nv_drain_rx(dev);
2595                 nv_drain_tx(dev);
2596                 /* reinit driver view of the rx queue */
2597                 set_bufsize(dev);
2598                 if (nv_init_ring(dev)) {
2599                         if (!np->in_shutdown)
2600                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2601                 }
2602                 /* reinit nic view of the rx queue */
2603                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2604                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2605                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2606                         base + NvRegRingSizes);
2607                 pci_push(base);
2608                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2609                 pci_push(base);
2610
2611                 /* restart rx engine */
2612                 nv_start_rx(dev);
2613                 nv_start_tx(dev);
2614                 spin_unlock(&np->lock);
2615                 netif_tx_unlock_bh(dev);
2616                 nv_enable_irq(dev);
2617         }
2618         return 0;
2619 }
2620
2621 static void nv_copy_mac_to_hw(struct net_device *dev)
2622 {
2623         u8 __iomem *base = get_hwbase(dev);
2624         u32 mac[2];
2625
2626         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
2627                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
2628         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
2629
2630         writel(mac[0], base + NvRegMacAddrA);
2631         writel(mac[1], base + NvRegMacAddrB);
2632 }
2633
2634 /*
2635  * nv_set_mac_address: dev->set_mac_address function
2636  * Called with rtnl_lock() held.
2637  */
2638 static int nv_set_mac_address(struct net_device *dev, void *addr)
2639 {
2640         struct fe_priv *np = netdev_priv(dev);
2641         struct sockaddr *macaddr = (struct sockaddr*)addr;
2642
2643         if (!is_valid_ether_addr(macaddr->sa_data))
2644                 return -EADDRNOTAVAIL;
2645
2646         /* synchronized against open : rtnl_lock() held by caller */
2647         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
2648
2649         if (netif_running(dev)) {
2650                 netif_tx_lock_bh(dev);
2651                 spin_lock_irq(&np->lock);
2652
2653                 /* stop rx engine */
2654                 nv_stop_rx(dev);
2655
2656                 /* set mac address */
2657                 nv_copy_mac_to_hw(dev);
2658
2659                 /* restart rx engine */
2660                 nv_start_rx(dev);
2661                 spin_unlock_irq(&np->lock);
2662                 netif_tx_unlock_bh(dev);
2663         } else {
2664                 nv_copy_mac_to_hw(dev);
2665         }
2666         return 0;
2667 }
2668
2669 /*
2670  * nv_set_multicast: dev->set_multicast function
2671  * Called with netif_tx_lock held.
2672  */
2673 static void nv_set_multicast(struct net_device *dev)
2674 {
2675         struct fe_priv *np = netdev_priv(dev);
2676         u8 __iomem *base = get_hwbase(dev);
2677         u32 addr[2];
2678         u32 mask[2];
2679         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
2680
2681         memset(addr, 0, sizeof(addr));
2682         memset(mask, 0, sizeof(mask));
2683
2684         if (dev->flags & IFF_PROMISC) {
2685                 pff |= NVREG_PFF_PROMISC;
2686         } else {
2687                 pff |= NVREG_PFF_MYADDR;
2688
2689                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
2690                         u32 alwaysOff[2];
2691                         u32 alwaysOn[2];
2692
2693                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
2694                         if (dev->flags & IFF_ALLMULTI) {
2695                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
2696                         } else {
2697                                 struct dev_mc_list *walk;
2698
2699                                 walk = dev->mc_list;
2700                                 while (walk != NULL) {
2701                                         u32 a, b;
2702                                         a = le32_to_cpu(*(__le32 *) walk->dmi_addr);
2703                                         b = le16_to_cpu(*(__le16 *) (&walk->dmi_addr[4]));
2704                                         alwaysOn[0] &= a;
2705                                         alwaysOff[0] &= ~a;
2706                                         alwaysOn[1] &= b;
2707                                         alwaysOff[1] &= ~b;
2708                                         walk = walk->next;
2709                                 }
2710                         }
2711                         addr[0] = alwaysOn[0];
2712                         addr[1] = alwaysOn[1];
2713                         mask[0] = alwaysOn[0] | alwaysOff[0];
2714                         mask[1] = alwaysOn[1] | alwaysOff[1];
2715                 } else {
2716                         mask[0] = NVREG_MCASTMASKA_NONE;
2717                         mask[1] = NVREG_MCASTMASKB_NONE;
2718                 }
2719         }
2720         addr[0] |= NVREG_MCASTADDRA_FORCE;
2721         pff |= NVREG_PFF_ALWAYS;
2722         spin_lock_irq(&np->lock);
2723         nv_stop_rx(dev);
2724         writel(addr[0], base + NvRegMulticastAddrA);
2725         writel(addr[1], base + NvRegMulticastAddrB);
2726         writel(mask[0], base + NvRegMulticastMaskA);
2727         writel(mask[1], base + NvRegMulticastMaskB);
2728         writel(pff, base + NvRegPacketFilterFlags);
2729         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
2730                 dev->name);
2731         nv_start_rx(dev);
2732         spin_unlock_irq(&np->lock);
2733 }
2734
2735 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
2736 {
2737         struct fe_priv *np = netdev_priv(dev);
2738         u8 __iomem *base = get_hwbase(dev);
2739
2740         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
2741
2742         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
2743                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
2744                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
2745                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
2746                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2747                 } else {
2748                         writel(pff, base + NvRegPacketFilterFlags);
2749                 }
2750         }
2751         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
2752                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
2753                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
2754                         writel(NVREG_TX_PAUSEFRAME_ENABLE,  base + NvRegTxPauseFrame);
2755                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
2756                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2757                 } else {
2758                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
2759                         writel(regmisc, base + NvRegMisc1);
2760                 }
2761         }
2762 }
2763
2764 /**
2765  * nv_update_linkspeed: Setup the MAC according to the link partner
2766  * @dev: Network device to be configured
2767  *
2768  * The function queries the PHY and checks if there is a link partner.
2769  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
2770  * set to 10 MBit HD.
2771  *
2772  * The function returns 0 if there is no link partner and 1 if there is
2773  * a good link partner.
2774  */
2775 static int nv_update_linkspeed(struct net_device *dev)
2776 {
2777         struct fe_priv *np = netdev_priv(dev);
2778         u8 __iomem *base = get_hwbase(dev);
2779         int adv = 0;
2780         int lpa = 0;
2781         int adv_lpa, adv_pause, lpa_pause;
2782         int newls = np->linkspeed;
2783         int newdup = np->duplex;
2784         int mii_status;
2785         int retval = 0;
2786         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
2787         u32 txrxFlags = 0;
2788
2789         /* BMSR_LSTATUS is latched, read it twice:
2790          * we want the current value.
2791          */
2792         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2793         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2794
2795         if (!(mii_status & BMSR_LSTATUS)) {
2796                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
2797                                 dev->name);
2798                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2799                 newdup = 0;
2800                 retval = 0;
2801                 goto set_speed;
2802         }
2803
2804         if (np->autoneg == 0) {
2805                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
2806                                 dev->name, np->fixed_mode);
2807                 if (np->fixed_mode & LPA_100FULL) {
2808                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2809                         newdup = 1;
2810                 } else if (np->fixed_mode & LPA_100HALF) {
2811                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2812                         newdup = 0;
2813                 } else if (np->fixed_mode & LPA_10FULL) {
2814                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2815                         newdup = 1;
2816                 } else {
2817                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2818                         newdup = 0;
2819                 }
2820                 retval = 1;
2821                 goto set_speed;
2822         }
2823         /* check auto negotiation is complete */
2824         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
2825                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
2826                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2827                 newdup = 0;
2828                 retval = 0;
2829                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
2830                 goto set_speed;
2831         }
2832
2833         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2834         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
2835         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
2836                                 dev->name, adv, lpa);
2837
2838         retval = 1;
2839         if (np->gigabit == PHY_GIGABIT) {
2840                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
2841                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
2842
2843                 if ((control_1000 & ADVERTISE_1000FULL) &&
2844                         (status_1000 & LPA_1000FULL)) {
2845                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
2846                                 dev->name);
2847                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
2848                         newdup = 1;
2849                         goto set_speed;
2850                 }
2851         }
2852
2853         /* FIXME: handle parallel detection properly */
2854         adv_lpa = lpa & adv;
2855         if (adv_lpa & LPA_100FULL) {
2856                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2857                 newdup = 1;
2858         } else if (adv_lpa & LPA_100HALF) {
2859                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2860                 newdup = 0;
2861         } else if (adv_lpa & LPA_10FULL) {
2862                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2863                 newdup = 1;
2864         } else if (adv_lpa & LPA_10HALF) {
2865                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2866                 newdup = 0;
2867         } else {
2868                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, adv_lpa);
2869                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2870                 newdup = 0;
2871         }
2872
2873 set_speed:
2874         if (np->duplex == newdup && np->linkspeed == newls)
2875                 return retval;
2876
2877         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
2878                         dev->name, np->linkspeed, np->duplex, newls, newdup);
2879
2880         np->duplex = newdup;
2881         np->linkspeed = newls;
2882
2883         /* The transmitter and receiver must be restarted for safe update */
2884         if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
2885                 txrxFlags |= NV_RESTART_TX;
2886                 nv_stop_tx(dev);
2887         }
2888         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
2889                 txrxFlags |= NV_RESTART_RX;
2890                 nv_stop_rx(dev);
2891         }
2892
2893         if (np->gigabit == PHY_GIGABIT) {
2894                 phyreg = readl(base + NvRegRandomSeed);
2895                 phyreg &= ~(0x3FF00);
2896                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
2897                         phyreg |= NVREG_RNDSEED_FORCE3;
2898                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
2899                         phyreg |= NVREG_RNDSEED_FORCE2;
2900                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
2901                         phyreg |= NVREG_RNDSEED_FORCE;
2902                 writel(phyreg, base + NvRegRandomSeed);
2903         }
2904
2905         phyreg = readl(base + NvRegPhyInterface);
2906         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
2907         if (np->duplex == 0)
2908                 phyreg |= PHY_HALF;
2909         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
2910                 phyreg |= PHY_100;
2911         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2912                 phyreg |= PHY_1000;
2913         writel(phyreg, base + NvRegPhyInterface);
2914
2915         if (phyreg & PHY_RGMII) {
2916                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2917                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
2918                 else
2919                         txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
2920         } else {
2921                 txreg = NVREG_TX_DEFERRAL_DEFAULT;
2922         }
2923         writel(txreg, base + NvRegTxDeferral);
2924
2925         if (np->desc_ver == DESC_VER_1) {
2926                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
2927         } else {
2928                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2929                         txreg = NVREG_TX_WM_DESC2_3_1000;
2930                 else
2931                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
2932         }
2933         writel(txreg, base + NvRegTxWatermark);
2934
2935         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
2936                 base + NvRegMisc1);
2937         pci_push(base);
2938         writel(np->linkspeed, base + NvRegLinkSpeed);
2939         pci_push(base);
2940
2941         pause_flags = 0;
2942         /* setup pause frame */
2943         if (np->duplex != 0) {
2944                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
2945                         adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
2946                         lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
2947
2948                         switch (adv_pause) {
2949                         case ADVERTISE_PAUSE_CAP:
2950                                 if (lpa_pause & LPA_PAUSE_CAP) {
2951                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2952                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2953                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2954                                 }
2955                                 break;
2956                         case ADVERTISE_PAUSE_ASYM:
2957                                 if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
2958                                 {
2959                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2960                                 }
2961                                 break;
2962                         case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
2963                                 if (lpa_pause & LPA_PAUSE_CAP)
2964                                 {
2965                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
2966                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2967                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2968                                 }
2969                                 if (lpa_pause == LPA_PAUSE_ASYM)
2970                                 {
2971                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2972                                 }
2973                                 break;
2974                         }
2975                 } else {
2976                         pause_flags = np->pause_flags;
2977                 }
2978         }
2979         nv_update_pause(dev, pause_flags);
2980
2981         if (txrxFlags & NV_RESTART_TX)
2982                 nv_start_tx(dev);
2983         if (txrxFlags & NV_RESTART_RX)
2984                 nv_start_rx(dev);
2985
2986         return retval;
2987 }
2988
2989 static void nv_linkchange(struct net_device *dev)
2990 {
2991         if (nv_update_linkspeed(dev)) {
2992                 if (!netif_carrier_ok(dev)) {
2993                         netif_carrier_on(dev);
2994                         printk(KERN_INFO "%s: link up.\n", dev->name);
2995                         nv_start_rx(dev);
2996                 }
2997         } else {
2998                 if (netif_carrier_ok(dev)) {
2999                         netif_carrier_off(dev);
3000                         printk(KERN_INFO "%s: link down.\n", dev->name);
3001                         nv_stop_rx(dev);
3002                 }
3003         }
3004 }
3005
3006 static void nv_link_irq(struct net_device *dev)
3007 {
3008         u8 __iomem *base = get_hwbase(dev);
3009         u32 miistat;
3010
3011         miistat = readl(base + NvRegMIIStatus);
3012         writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3013         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
3014
3015         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3016                 nv_linkchange(dev);
3017         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
3018 }
3019
3020 static irqreturn_t nv_nic_irq(int foo, void *data)
3021 {
3022         struct net_device *dev = (struct net_device *) data;
3023         struct fe_priv *np = netdev_priv(dev);
3024         u8 __iomem *base = get_hwbase(dev);
3025         u32 events;
3026         int i;
3027
3028         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
3029
3030         for (i=0; ; i++) {
3031                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3032                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3033                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3034                 } else {
3035                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3036                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3037                 }
3038                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3039                 if (!(events & np->irqmask))
3040                         break;
3041
3042                 spin_lock(&np->lock);
3043                 nv_tx_done(dev);
3044                 spin_unlock(&np->lock);
3045
3046 #ifdef CONFIG_FORCEDETH_NAPI
3047                 if (events & NVREG_IRQ_RX_ALL) {
3048                         netif_rx_schedule(dev, &np->napi);
3049
3050                         /* Disable furthur receive irq's */
3051                         spin_lock(&np->lock);
3052                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3053
3054                         if (np->msi_flags & NV_MSI_X_ENABLED)
3055                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3056                         else
3057                                 writel(np->irqmask, base + NvRegIrqMask);
3058                         spin_unlock(&np->lock);
3059                 }
3060 #else
3061                 if (nv_rx_process(dev, RX_WORK_PER_LOOP)) {
3062                         if (unlikely(nv_alloc_rx(dev))) {
3063                                 spin_lock(&np->lock);
3064                                 if (!np->in_shutdown)
3065                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3066                                 spin_unlock(&np->lock);
3067                         }
3068                 }
3069 #endif
3070                 if (unlikely(events & NVREG_IRQ_LINK)) {
3071                         spin_lock(&np->lock);
3072                         nv_link_irq(dev);
3073                         spin_unlock(&np->lock);
3074                 }
3075                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3076                         spin_lock(&np->lock);
3077                         nv_linkchange(dev);
3078                         spin_unlock(&np->lock);
3079                         np->link_timeout = jiffies + LINK_TIMEOUT;
3080                 }
3081                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3082                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3083                                                 dev->name, events);
3084                 }
3085                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3086                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3087                                                 dev->name, events);
3088                 }
3089                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3090                         spin_lock(&np->lock);
3091                         /* disable interrupts on the nic */
3092                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3093                                 writel(0, base + NvRegIrqMask);
3094                         else
3095                                 writel(np->irqmask, base + NvRegIrqMask);
3096                         pci_push(base);
3097
3098                         if (!np->in_shutdown) {
3099                                 np->nic_poll_irq = np->irqmask;
3100                                 np->recover_error = 1;
3101                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3102                         }
3103                         spin_unlock(&np->lock);
3104                         break;
3105                 }
3106                 if (unlikely(i > max_interrupt_work)) {
3107                         spin_lock(&np->lock);
3108                         /* disable interrupts on the nic */
3109                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3110                                 writel(0, base + NvRegIrqMask);
3111                         else
3112                                 writel(np->irqmask, base + NvRegIrqMask);
3113                         pci_push(base);
3114
3115                         if (!np->in_shutdown) {
3116                                 np->nic_poll_irq = np->irqmask;
3117                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3118                         }
3119                         spin_unlock(&np->lock);
3120                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3121                         break;
3122                 }
3123
3124         }
3125         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
3126
3127         return IRQ_RETVAL(i);
3128 }
3129
3130 /**
3131  * All _optimized functions are used to help increase performance
3132  * (reduce CPU and increase throughput). They use descripter version 3,
3133  * compiler directives, and reduce memory accesses.
3134  */
3135 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3136 {
3137         struct net_device *dev = (struct net_device *) data;
3138         struct fe_priv *np = netdev_priv(dev);
3139         u8 __iomem *base = get_hwbase(dev);
3140         u32 events;
3141         int i;
3142
3143         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
3144
3145         for (i=0; ; i++) {
3146                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3147                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3148                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3149                 } else {
3150                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3151                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3152                 }
3153                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3154                 if (!(events & np->irqmask))
3155                         break;
3156
3157                 spin_lock(&np->lock);
3158                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3159                 spin_unlock(&np->lock);
3160
3161 #ifdef CONFIG_FORCEDETH_NAPI
3162                 if (events & NVREG_IRQ_RX_ALL) {
3163                         netif_rx_schedule(dev, &np->napi);
3164
3165                         /* Disable furthur receive irq's */
3166                         spin_lock(&np->lock);
3167                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3168
3169                         if (np->msi_flags & NV_MSI_X_ENABLED)
3170                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3171                         else
3172                                 writel(np->irqmask, base + NvRegIrqMask);
3173                         spin_unlock(&np->lock);
3174                 }
3175 #else
3176                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3177                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3178                                 spin_lock(&np->lock);
3179                                 if (!np->in_shutdown)
3180                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3181                                 spin_unlock(&np->lock);
3182                         }
3183                 }
3184 #endif
3185                 if (unlikely(events & NVREG_IRQ_LINK)) {
3186                         spin_lock(&np->lock);
3187                         nv_link_irq(dev);
3188                         spin_unlock(&np->lock);
3189                 }
3190                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3191                         spin_lock(&np->lock);
3192                         nv_linkchange(dev);
3193                         spin_unlock(&np->lock);
3194                         np->link_timeout = jiffies + LINK_TIMEOUT;
3195                 }
3196                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3197                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3198                                                 dev->name, events);
3199                 }
3200                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3201                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3202                                                 dev->name, events);
3203                 }
3204                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3205                         spin_lock(&np->lock);
3206                         /* disable interrupts on the nic */
3207                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3208                                 writel(0, base + NvRegIrqMask);
3209                         else
3210                                 writel(np->irqmask, base + NvRegIrqMask);
3211                         pci_push(base);
3212
3213                         if (!np->in_shutdown) {
3214                                 np->nic_poll_irq = np->irqmask;
3215                                 np->recover_error = 1;
3216                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3217                         }
3218                         spin_unlock(&np->lock);
3219                         break;
3220                 }
3221
3222                 if (unlikely(i > max_interrupt_work)) {
3223                         spin_lock(&np->lock);
3224                         /* disable interrupts on the nic */
3225                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3226                                 writel(0, base + NvRegIrqMask);
3227                         else
3228                                 writel(np->irqmask, base + NvRegIrqMask);
3229                         pci_push(base);
3230
3231                         if (!np->in_shutdown) {
3232                                 np->nic_poll_irq = np->irqmask;
3233                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3234                         }
3235                         spin_unlock(&np->lock);
3236                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3237                         break;
3238                 }
3239
3240         }
3241         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name);
3242
3243         return IRQ_RETVAL(i);
3244 }
3245
3246 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3247 {
3248         struct net_device *dev = (struct net_device *) data;
3249         struct fe_priv *np = netdev_priv(dev);
3250         u8 __iomem *base = get_hwbase(dev);
3251         u32 events;
3252         int i;
3253         unsigned long flags;
3254
3255         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
3256
3257         for (i=0; ; i++) {
3258                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3259                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
3260                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
3261                 if (!(events & np->irqmask))
3262                         break;
3263
3264                 spin_lock_irqsave(&np->lock, flags);
3265                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3266                 spin_unlock_irqrestore(&np->lock, flags);
3267
3268                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3269                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3270                                                 dev->name, events);
3271                 }
3272                 if (unlikely(i > max_interrupt_work)) {
3273                         spin_lock_irqsave(&np->lock, flags);
3274                         /* disable interrupts on the nic */
3275                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3276                         pci_push(base);
3277
3278                         if (!np->in_shutdown) {
3279                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3280                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3281                         }
3282                         spin_unlock_irqrestore(&np->lock, flags);
3283                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
3284                         break;
3285                 }
3286
3287         }
3288         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
3289
3290         return IRQ_RETVAL(i);
3291 }
3292
3293 #ifdef CONFIG_FORCEDETH_NAPI
3294 static int nv_napi_poll(struct napi_struct *napi, int budget)
3295 {
3296         struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3297         struct net_device *dev = np->dev;
3298         u8 __iomem *base = get_hwbase(dev);
3299         unsigned long flags;
3300         int pkts, retcode;
3301
3302         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3303                 pkts = nv_rx_process(dev, budget);
3304                 retcode = nv_alloc_rx(dev);
3305         } else {
3306                 pkts = nv_rx_process_optimized(dev, budget);
3307                 retcode = nv_alloc_rx_optimized(dev);
3308         }
3309
3310         if (retcode) {
3311                 spin_lock_irqsave(&np->lock, flags);
3312                 if (!np->in_shutdown)
3313                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3314                 spin_unlock_irqrestore(&np->lock, flags);
3315         }
3316
3317         if (pkts < budget) {
3318                 /* re-enable receive interrupts */
3319                 spin_lock_irqsave(&np->lock, flags);
3320
3321                 __netif_rx_complete(dev, napi);
3322
3323                 np->irqmask |= NVREG_IRQ_RX_ALL;
3324                 if (np->msi_flags & NV_MSI_X_ENABLED)
3325                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3326                 else
3327                         writel(np->irqmask, base + NvRegIrqMask);
3328
3329                 spin_unlock_irqrestore(&np->lock, flags);
3330         }
3331         return pkts;
3332 }
3333 #endif
3334
3335 #ifdef CONFIG_FORCEDETH_NAPI
3336 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3337 {
3338         struct net_device *dev = (struct net_device *) data;
3339         struct fe_priv *np = netdev_priv(dev);
3340         u8 __iomem *base = get_hwbase(dev);
3341         u32 events;
3342
3343         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3344         writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3345
3346         if (events) {
3347                 netif_rx_schedule(dev, &np->napi);
3348                 /* disable receive interrupts on the nic */
3349                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3350                 pci_push(base);
3351         }
3352         return IRQ_HANDLED;
3353 }
3354 #else
3355 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3356 {
3357         struct net_device *dev = (struct net_device *) data;
3358         struct fe_priv *np = netdev_priv(dev);
3359         u8 __iomem *base = get_hwbase(dev);
3360         u32 events;
3361         int i;
3362         unsigned long flags;
3363
3364         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
3365
3366         for (i=0; ; i++) {
3367                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3368                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3369                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
3370                 if (!(events & np->irqmask))
3371                         break;
3372
3373                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3374                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3375                                 spin_lock_irqsave(&np->lock, flags);
3376                                 if (!np->in_shutdown)
3377                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3378                                 spin_unlock_irqrestore(&np->lock, flags);
3379                         }
3380                 }
3381
3382                 if (unlikely(i > max_interrupt_work)) {
3383                         spin_lock_irqsave(&np->lock, flags);
3384                         /* disable interrupts on the nic */
3385                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3386                         pci_push(base);
3387
3388                         if (!np->in_shutdown) {
3389                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3390                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3391                         }
3392                         spin_unlock_irqrestore(&np->lock, flags);
3393                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
3394                         break;
3395                 }
3396         }
3397         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
3398
3399         return IRQ_RETVAL(i);
3400 }
3401 #endif
3402
3403 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3404 {
3405         struct net_device *dev = (struct net_device *) data;
3406         struct fe_priv *np = netdev_priv(dev);
3407         u8 __iomem *base = get_hwbase(dev);
3408         u32 events;
3409         int i;
3410         unsigned long flags;
3411
3412         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
3413
3414         for (i=0; ; i++) {
3415                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3416                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
3417                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3418                 if (!(events & np->irqmask))
3419                         break;
3420
3421                 /* check tx in case we reached max loop limit in tx isr */
3422                 spin_lock_irqsave(&np->lock, flags);
3423                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3424                 spin_unlock_irqrestore(&np->lock, flags);
3425
3426                 if (events & NVREG_IRQ_LINK) {
3427                         spin_lock_irqsave(&np->lock, flags);
3428                         nv_link_irq(dev);
3429                         spin_unlock_irqrestore(&np->lock, flags);
3430                 }
3431                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3432                         spin_lock_irqsave(&np->lock, flags);
3433                         nv_linkchange(dev);
3434                         spin_unlock_irqrestore(&np->lock, flags);
3435                         np->link_timeout = jiffies + LINK_TIMEOUT;
3436                 }
3437                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3438                         spin_lock_irq(&np->lock);
3439                         /* disable interrupts on the nic */
3440                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3441                         pci_push(base);
3442
3443                         if (!np->in_shutdown) {
3444                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3445                                 np->recover_error = 1;
3446                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3447                         }
3448                         spin_unlock_irq(&np->lock);
3449                         break;
3450                 }
3451                 if (events & (NVREG_IRQ_UNKNOWN)) {
3452                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3453                                                 dev->name, events);
3454                 }
3455                 if (unlikely(i > max_interrupt_work)) {
3456                         spin_lock_irqsave(&np->lock, flags);
3457                         /* disable interrupts on the nic */
3458                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3459                         pci_push(base);
3460
3461                         if (!np->in_shutdown) {
3462                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3463                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3464                         }
3465                         spin_unlock_irqrestore(&np->lock, flags);
3466                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
3467                         break;
3468                 }
3469
3470         }
3471         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
3472
3473         return IRQ_RETVAL(i);
3474 }
3475
3476 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3477 {
3478         struct net_device *dev = (struct net_device *) data;
3479         struct fe_priv *np = netdev_priv(dev);
3480         u8 __iomem *base = get_hwbase(dev);
3481         u32 events;
3482
3483         dprintk(KERN_DEBUG "%s: nv_nic_irq_test\n", dev->name);
3484
3485         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3486                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3487                 writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3488         } else {
3489                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3490                 writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3491         }
3492         pci_push(base);
3493         dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3494         if (!(events & NVREG_IRQ_TIMER))
3495                 return IRQ_RETVAL(0);
3496
3497         spin_lock(&np->lock);
3498         np->intr_test = 1;
3499         spin_unlock(&np->lock);
3500
3501         dprintk(KERN_DEBUG "%s: nv_nic_irq_test completed\n", dev->name);
3502
3503         return IRQ_RETVAL(1);
3504 }
3505
3506 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3507 {
3508         u8 __iomem *base = get_hwbase(dev);
3509         int i;
3510         u32 msixmap = 0;
3511
3512         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3513          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3514          * the remaining 8 interrupts.
3515          */
3516         for (i = 0; i < 8; i++) {
3517                 if ((irqmask >> i) & 0x1) {
3518                         msixmap |= vector << (i << 2);
3519                 }
3520         }
3521         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3522
3523         msixmap = 0;
3524         for (i = 0; i < 8; i++) {
3525                 if ((irqmask >> (i + 8)) & 0x1) {
3526                         msixmap |= vector << (i << 2);
3527                 }
3528         }
3529         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3530 }
3531
3532 static int nv_request_irq(struct net_device *dev, int intr_test)
3533 {
3534         struct fe_priv *np = get_nvpriv(dev);
3535         u8 __iomem *base = get_hwbase(dev);
3536         int ret = 1;
3537         int i;
3538         irqreturn_t (*handler)(int foo, void *data);
3539
3540         if (intr_test) {
3541                 handler = nv_nic_irq_test;
3542         } else {
3543                 if (np->desc_ver == DESC_VER_3)
3544                         handler = nv_nic_irq_optimized;
3545                 else
3546                         handler = nv_nic_irq;
3547         }
3548
3549         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3550                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3551                         np->msi_x_entry[i].entry = i;
3552                 }
3553                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
3554                         np->msi_flags |= NV_MSI_X_ENABLED;
3555                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3556                                 /* Request irq for rx handling */
3557                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, IRQF_SHARED, dev->name, dev) != 0) {
3558                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
3559                                         pci_disable_msix(np->pci_dev);
3560                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3561                                         goto out_err;
3562                                 }
3563                                 /* Request irq for tx handling */
3564                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, IRQF_SHARED, dev->name, dev) != 0) {
3565                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
3566                                         pci_disable_msix(np->pci_dev);
3567                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3568                                         goto out_free_rx;
3569                                 }
3570                                 /* Request irq for link and timer handling */
3571                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, IRQF_SHARED, dev->name, dev) != 0) {
3572                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
3573                                         pci_disable_msix(np->pci_dev);
3574                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3575                                         goto out_free_tx;
3576                                 }
3577                                 /* map interrupts to their respective vector */
3578                                 writel(0, base + NvRegMSIXMap0);
3579                                 writel(0, base + NvRegMSIXMap1);
3580                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3581                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3582                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3583                         } else {
3584                                 /* Request irq for all interrupts */
3585                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3586                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3587                                         pci_disable_msix(np->pci_dev);
3588                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3589                                         goto out_err;
3590                                 }
3591
3592                                 /* map interrupts to vector 0 */
3593                                 writel(0, base + NvRegMSIXMap0);
3594                                 writel(0, base + NvRegMSIXMap1);
3595                         }
3596                 }
3597         }
3598         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3599                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
3600                         np->msi_flags |= NV_MSI_ENABLED;
3601                         dev->irq = np->pci_dev->irq;
3602                         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3603                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3604                                 pci_disable_msi(np->pci_dev);
3605                                 np->msi_flags &= ~NV_MSI_ENABLED;
3606                                 dev->irq = np->pci_dev->irq;
3607                                 goto out_err;
3608                         }
3609
3610                         /* map interrupts to vector 0 */
3611                         writel(0, base + NvRegMSIMap0);
3612                         writel(0, base + NvRegMSIMap1);
3613                         /* enable msi vector 0 */
3614                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3615                 }
3616         }
3617         if (ret != 0) {
3618                 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3619                         goto out_err;
3620
3621         }
3622
3623         return 0;
3624 out_free_tx:
3625         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
3626 out_free_rx:
3627         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
3628 out_err:
3629         return 1;
3630 }
3631
3632 static void nv_free_irq(struct net_device *dev)
3633 {
3634         struct fe_priv *np = get_nvpriv(dev);
3635         int i;
3636
3637         if (np->msi_flags & NV_MSI_X_ENABLED) {
3638                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3639                         free_irq(np->msi_x_entry[i].vector, dev);
3640                 }
3641                 pci_disable_msix(np->pci_dev);
3642                 np->msi_flags &= ~NV_MSI_X_ENABLED;
3643         } else {
3644                 free_irq(np->pci_dev->irq, dev);
3645                 if (np->msi_flags & NV_MSI_ENABLED) {
3646                         pci_disable_msi(np->pci_dev);
3647                         np->msi_flags &= ~NV_MSI_ENABLED;
3648                 }
3649         }
3650 }
3651
3652 static void nv_do_nic_poll(unsigned long data)
3653 {
3654         struct net_device *dev = (struct net_device *) data;
3655         struct fe_priv *np = netdev_priv(dev);
3656         u8 __iomem *base = get_hwbase(dev);
3657         u32 mask = 0;
3658
3659         /*
3660          * First disable irq(s) and then
3661          * reenable interrupts on the nic, we have to do this before calling
3662          * nv_nic_irq because that may decide to do otherwise
3663          */
3664
3665         if (!using_multi_irqs(dev)) {
3666                 if (np->msi_flags & NV_MSI_X_ENABLED)
3667                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
3668                 else
3669                         disable_irq_lockdep(np->pci_dev->irq);
3670                 mask = np->irqmask;
3671         } else {
3672                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3673                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3674                         mask |= NVREG_IRQ_RX_ALL;
3675                 }
3676                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3677                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3678                         mask |= NVREG_IRQ_TX_ALL;
3679                 }
3680                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3681                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3682                         mask |= NVREG_IRQ_OTHER;
3683                 }
3684         }
3685         np->nic_poll_irq = 0;
3686
3687         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
3688
3689         if (np->recover_error) {
3690                 np->recover_error = 0;
3691                 printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
3692                 if (netif_running(dev)) {
3693                         netif_tx_lock_bh(dev);
3694                         spin_lock(&np->lock);
3695                         /* stop engines */
3696                         nv_stop_rx(dev);
3697                         nv_stop_tx(dev);
3698                         nv_txrx_reset(dev);
3699                         /* drain rx queue */
3700                         nv_drain_rx(dev);
3701                         nv_drain_tx(dev);
3702                         /* reinit driver view of the rx queue */
3703                         set_bufsize(dev);
3704                         if (nv_init_ring(dev)) {
3705                                 if (!np->in_shutdown)
3706                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3707                         }
3708                         /* reinit nic view of the rx queue */
3709                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3710                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3711                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3712                                 base + NvRegRingSizes);
3713                         pci_push(base);
3714                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3715                         pci_push(base);
3716
3717                         /* restart rx engine */
3718                         nv_start_rx(dev);
3719                         nv_start_tx(dev);
3720                         spin_unlock(&np->lock);
3721                         netif_tx_unlock_bh(dev);
3722                 }
3723         }
3724
3725
3726         writel(mask, base + NvRegIrqMask);
3727         pci_push(base);
3728
3729         if (!using_multi_irqs(dev)) {
3730                 if (np->desc_ver == DESC_VER_3)
3731                         nv_nic_irq_optimized(0, dev);
3732                 else
3733                         nv_nic_irq(0, dev);
3734                 if (np->msi_flags & NV_MSI_X_ENABLED)
3735                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
3736                 else
3737                         enable_irq_lockdep(np->pci_dev->irq);
3738         } else {
3739                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3740                         nv_nic_irq_rx(0, dev);
3741                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3742                 }
3743                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3744                         nv_nic_irq_tx(0, dev);
3745                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3746                 }
3747                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3748                         nv_nic_irq_other(0, dev);
3749                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3750                 }
3751         }
3752 }
3753
3754 #ifdef CONFIG_NET_POLL_CONTROLLER
3755 static void nv_poll_controller(struct net_device *dev)
3756 {
3757         nv_do_nic_poll((unsigned long) dev);
3758 }
3759 #endif
3760
3761 static void nv_do_stats_poll(unsigned long data)
3762 {
3763         struct net_device *dev = (struct net_device *) data;
3764         struct fe_priv *np = netdev_priv(dev);
3765
3766         nv_get_hw_stats(dev);
3767
3768         if (!np->in_shutdown)
3769                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
3770 }
3771
3772 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3773 {
3774         struct fe_priv *np = netdev_priv(dev);
3775         strcpy(info->driver, DRV_NAME);
3776         strcpy(info->version, FORCEDETH_VERSION);
3777         strcpy(info->bus_info, pci_name(np->pci_dev));
3778 }
3779
3780 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3781 {
3782         struct fe_priv *np = netdev_priv(dev);
3783         wolinfo->supported = WAKE_MAGIC;
3784
3785         spin_lock_irq(&np->lock);
3786         if (np->wolenabled)
3787                 wolinfo->wolopts = WAKE_MAGIC;
3788         spin_unlock_irq(&np->lock);
3789 }
3790
3791 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3792 {
3793         struct fe_priv *np = netdev_priv(dev);
3794         u8 __iomem *base = get_hwbase(dev);
3795         u32 flags = 0;
3796
3797         if (wolinfo->wolopts == 0) {
3798                 np->wolenabled = 0;
3799         } else if (wolinfo->wolopts & WAKE_MAGIC) {
3800                 np->wolenabled = 1;
3801                 flags = NVREG_WAKEUPFLAGS_ENABLE;
3802         }
3803         if (netif_running(dev)) {
3804                 spin_lock_irq(&np->lock);
3805                 writel(flags, base + NvRegWakeUpFlags);
3806                 spin_unlock_irq(&np->lock);
3807         }
3808         return 0;
3809 }
3810
3811 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3812 {
3813         struct fe_priv *np = netdev_priv(dev);
3814         int adv;
3815
3816         spin_lock_irq(&np->lock);
3817         ecmd->port = PORT_MII;
3818         if (!netif_running(dev)) {
3819                 /* We do not track link speed / duplex setting if the
3820                  * interface is disabled. Force a link check */
3821                 if (nv_update_linkspeed(dev)) {
3822                         if (!netif_carrier_ok(dev))
3823                                 netif_carrier_on(dev);
3824                 } else {
3825                         if (netif_carrier_ok(dev))
3826                                 netif_carrier_off(dev);
3827                 }
3828         }
3829
3830         if (netif_carrier_ok(dev)) {
3831                 switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
3832                 case NVREG_LINKSPEED_10:
3833                         ecmd->speed = SPEED_10;
3834                         break;
3835                 case NVREG_LINKSPEED_100:
3836                         ecmd->speed = SPEED_100;
3837                         break;
3838                 case NVREG_LINKSPEED_1000:
3839                         ecmd->speed = SPEED_1000;
3840                         break;
3841                 }
3842                 ecmd->duplex = DUPLEX_HALF;
3843                 if (np->duplex)
3844                         ecmd->duplex = DUPLEX_FULL;
3845         } else {
3846                 ecmd->speed = -1;
3847                 ecmd->duplex = -1;
3848         }
3849
3850         ecmd->autoneg = np->autoneg;
3851
3852         ecmd->advertising = ADVERTISED_MII;
3853         if (np->autoneg) {
3854                 ecmd->advertising |= ADVERTISED_Autoneg;
3855                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3856                 if (adv & ADVERTISE_10HALF)
3857                         ecmd->advertising |= ADVERTISED_10baseT_Half;
3858                 if (adv & ADVERTISE_10FULL)
3859                         ecmd->advertising |= ADVERTISED_10baseT_Full;
3860                 if (adv & ADVERTISE_100HALF)
3861                         ecmd->advertising |= ADVERTISED_100baseT_Half;
3862                 if (adv & ADVERTISE_100FULL)
3863                         ecmd->advertising |= ADVERTISED_100baseT_Full;
3864                 if (np->gigabit == PHY_GIGABIT) {
3865                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3866                         if (adv & ADVERTISE_1000FULL)
3867                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
3868                 }
3869         }
3870         ecmd->supported = (SUPPORTED_Autoneg |
3871                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
3872                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
3873                 SUPPORTED_MII);
3874         if (np->gigabit == PHY_GIGABIT)
3875                 ecmd->supported |= SUPPORTED_1000baseT_Full;
3876
3877         ecmd->phy_address = np->phyaddr;
3878         ecmd->transceiver = XCVR_EXTERNAL;
3879
3880         /* ignore maxtxpkt, maxrxpkt for now */
3881         spin_unlock_irq(&np->lock);
3882         return 0;
3883 }
3884
3885 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3886 {
3887         struct fe_priv *np = netdev_priv(dev);
3888
3889         if (ecmd->port != PORT_MII)
3890                 return -EINVAL;
3891         if (ecmd->transceiver != XCVR_EXTERNAL)
3892                 return -EINVAL;
3893         if (ecmd->phy_address != np->phyaddr) {
3894                 /* TODO: support switching between multiple phys. Should be
3895                  * trivial, but not enabled due to lack of test hardware. */
3896                 return -EINVAL;
3897         }
3898         if (ecmd->autoneg == AUTONEG_ENABLE) {
3899                 u32 mask;
3900
3901                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
3902                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
3903                 if (np->gigabit == PHY_GIGABIT)
3904                         mask |= ADVERTISED_1000baseT_Full;
3905
3906                 if ((ecmd->advertising & mask) == 0)
3907                         return -EINVAL;
3908
3909         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
3910                 /* Note: autonegotiation disable, speed 1000 intentionally
3911                  * forbidden - noone should need that. */
3912
3913                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
3914                         return -EINVAL;
3915                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
3916                         return -EINVAL;
3917         } else {
3918                 return -EINVAL;
3919         }
3920
3921         netif_carrier_off(dev);
3922         if (netif_running(dev)) {
3923                 nv_disable_irq(dev);
3924                 netif_tx_lock_bh(dev);
3925                 spin_lock(&np->lock);
3926                 /* stop engines */
3927                 nv_stop_rx(dev);
3928                 nv_stop_tx(dev);
3929                 spin_unlock(&np->lock);
3930                 netif_tx_unlock_bh(dev);
3931         }
3932
3933         if (ecmd->autoneg == AUTONEG_ENABLE) {
3934                 int adv, bmcr;
3935
3936                 np->autoneg = 1;
3937
3938                 /* advertise only what has been requested */
3939                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3940                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3941                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
3942                         adv |= ADVERTISE_10HALF;
3943                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
3944                         adv |= ADVERTISE_10FULL;
3945                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
3946                         adv |= ADVERTISE_100HALF;
3947                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
3948                         adv |= ADVERTISE_100FULL;
3949                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisments but disable tx pause */
3950                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3951                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3952                         adv |=  ADVERTISE_PAUSE_ASYM;
3953                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3954
3955                 if (np->gigabit == PHY_GIGABIT) {
3956                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3957                         adv &= ~ADVERTISE_1000FULL;
3958                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
3959                                 adv |= ADVERTISE_1000FULL;
3960                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
3961                 }
3962
3963                 if (netif_running(dev))
3964                         printk(KERN_INFO "%s: link down.\n", dev->name);
3965                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3966                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
3967                         bmcr |= BMCR_ANENABLE;
3968                         /* reset the phy in order for settings to stick,
3969                          * and cause autoneg to start */
3970                         if (phy_reset(dev, bmcr)) {
3971                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3972                                 return -EINVAL;
3973                         }
3974                 } else {
3975                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3976                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3977                 }
3978         } else {
3979                 int adv, bmcr;
3980
3981                 np->autoneg = 0;
3982
3983                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3984                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3985                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
3986                         adv |= ADVERTISE_10HALF;
3987                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
3988                         adv |= ADVERTISE_10FULL;
3989                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
3990                         adv |= ADVERTISE_100HALF;
3991                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
3992                         adv |= ADVERTISE_100FULL;
3993                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
3994                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
3995                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3996                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3997                 }
3998                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
3999                         adv |=  ADVERTISE_PAUSE_ASYM;
4000                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4001                 }
4002                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4003                 np->fixed_mode = adv;
4004
4005                 if (np->gigabit == PHY_GIGABIT) {
4006                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4007                         adv &= ~ADVERTISE_1000FULL;
4008                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4009                 }
4010
4011                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4012                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4013                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4014                         bmcr |= BMCR_FULLDPLX;
4015                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4016                         bmcr |= BMCR_SPEED100;
4017                 if (np->phy_oui == PHY_OUI_MARVELL) {
4018                         /* reset the phy in order for forced mode settings to stick */
4019                         if (phy_reset(dev, bmcr)) {
4020                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4021                                 return -EINVAL;
4022                         }
4023                 } else {
4024                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4025                         if (netif_running(dev)) {
4026                                 /* Wait a bit and then reconfigure the nic. */
4027                                 udelay(10);
4028                                 nv_linkchange(dev);
4029                         }
4030                 }
4031         }
4032
4033         if (netif_running(dev)) {
4034                 nv_start_rx(dev);
4035                 nv_start_tx(dev);
4036                 nv_enable_irq(dev);
4037         }
4038
4039         return 0;
4040 }
4041
4042 #define FORCEDETH_REGS_VER      1
4043
4044 static int nv_get_regs_len(struct net_device *dev)
4045 {
4046         struct fe_priv *np = netdev_priv(dev);
4047         return np->register_size;
4048 }
4049
4050 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4051 {
4052         struct fe_priv *np = netdev_priv(dev);
4053         u8 __iomem *base = get_hwbase(dev);
4054         u32 *rbuf = buf;
4055         int i;
4056
4057         regs->version = FORCEDETH_REGS_VER;
4058         spin_lock_irq(&np->lock);
4059         for (i = 0;i <= np->register_size/sizeof(u32); i++)
4060                 rbuf[i] = readl(base + i*sizeof(u32));
4061         spin_unlock_irq(&np->lock);
4062 }
4063
4064 static int nv_nway_reset(struct net_device *dev)
4065 {
4066         struct fe_priv *np = netdev_priv(dev);
4067         int ret;
4068
4069         if (np->autoneg) {
4070                 int bmcr;
4071
4072                 netif_carrier_off(dev);
4073                 if (netif_running(dev)) {
4074                         nv_disable_irq(dev);
4075                         netif_tx_lock_bh(dev);
4076                         spin_lock(&np->lock);
4077                         /* stop engines */
4078                         nv_stop_rx(dev);
4079                         nv_stop_tx(dev);
4080                         spin_unlock(&np->lock);
4081                         netif_tx_unlock_bh(dev);
4082                         printk(KERN_INFO "%s: link down.\n", dev->name);
4083                 }
4084
4085                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4086                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4087                         bmcr |= BMCR_ANENABLE;
4088                         /* reset the phy in order for settings to stick*/
4089                         if (phy_reset(dev, bmcr)) {
4090                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4091                                 return -EINVAL;
4092                         }
4093                 } else {
4094                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4095                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4096                 }
4097
4098                 if (netif_running(dev)) {
4099                         nv_start_rx(dev);
4100                         nv_start_tx(dev);
4101                         nv_enable_irq(dev);
4102                 }
4103                 ret = 0;
4104         } else {
4105                 ret = -EINVAL;
4106         }
4107
4108         return ret;
4109 }
4110
4111 static int nv_set_tso(struct net_device *dev, u32 value)
4112 {
4113         struct fe_priv *np = netdev_priv(dev);
4114
4115         if ((np->driver_data & DEV_HAS_CHECKSUM))
4116                 return ethtool_op_set_tso(dev, value);
4117         else
4118                 return -EOPNOTSUPP;
4119 }
4120
4121 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4122 {
4123         struct fe_priv *np = netdev_priv(dev);
4124
4125         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4126         ring->rx_mini_max_pending = 0;
4127         ring->rx_jumbo_max_pending = 0;
4128         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4129
4130         ring->rx_pending = np->rx_ring_size;
4131         ring->rx_mini_pending = 0;
4132         ring->rx_jumbo_pending = 0;
4133         ring->tx_pending = np->tx_ring_size;
4134 }
4135
4136 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4137 {
4138         struct fe_priv *np = netdev_priv(dev);
4139         u8 __iomem *base = get_hwbase(dev);
4140         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4141         dma_addr_t ring_addr;
4142
4143         if (ring->rx_pending < RX_RING_MIN ||
4144             ring->tx_pending < TX_RING_MIN ||
4145             ring->rx_mini_pending != 0 ||
4146             ring->rx_jumbo_pending != 0 ||
4147             (np->desc_ver == DESC_VER_1 &&
4148              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4149               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4150             (np->desc_ver != DESC_VER_1 &&
4151              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4152               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4153                 return -EINVAL;
4154         }
4155
4156         /* allocate new rings */
4157         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4158                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4159                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4160                                             &ring_addr);
4161         } else {
4162                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4163                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4164                                             &ring_addr);
4165         }
4166         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4167         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4168         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4169                 /* fall back to old rings */
4170                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4171                         if (rxtx_ring)
4172                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4173                                                     rxtx_ring, ring_addr);
4174                 } else {
4175                         if (rxtx_ring)
4176                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4177                                                     rxtx_ring, ring_addr);
4178                 }
4179                 if (rx_skbuff)
4180                         kfree(rx_skbuff);
4181                 if (tx_skbuff)
4182                         kfree(tx_skbuff);
4183                 goto exit;
4184         }
4185
4186         if (netif_running(dev)) {
4187                 nv_disable_irq(dev);
4188                 netif_tx_lock_bh(dev);
4189                 spin_lock(&np->lock);
4190                 /* stop engines */
4191                 nv_stop_rx(dev);
4192                 nv_stop_tx(dev);
4193                 nv_txrx_reset(dev);
4194                 /* drain queues */
4195                 nv_drain_rx(dev);
4196                 nv_drain_tx(dev);
4197                 /* delete queues */
4198                 free_rings(dev);
4199         }
4200
4201         /* set new values */
4202         np->rx_ring_size = ring->rx_pending;
4203         np->tx_ring_size = ring->tx_pending;
4204         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4205                 np->rx_ring.orig = (struct ring_desc*)rxtx_ring;
4206                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4207         } else {
4208                 np->rx_ring.ex = (struct ring_desc_ex*)rxtx_ring;
4209                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4210         }
4211         np->rx_skb = (struct nv_skb_map*)rx_skbuff;
4212         np->tx_skb = (struct nv_skb_map*)tx_skbuff;
4213         np->ring_addr = ring_addr;
4214
4215         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4216         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4217
4218         if (netif_running(dev)) {
4219                 /* reinit driver view of the queues */
4220                 set_bufsize(dev);
4221                 if (nv_init_ring(dev)) {
4222                         if (!np->in_shutdown)
4223                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4224                 }
4225
4226                 /* reinit nic view of the queues */
4227                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4228                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4229                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4230                         base + NvRegRingSizes);
4231                 pci_push(base);
4232                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4233                 pci_push(base);
4234
4235                 /* restart engines */
4236                 nv_start_rx(dev);
4237                 nv_start_tx(dev);
4238                 spin_unlock(&np->lock);
4239                 netif_tx_unlock_bh(dev);
4240                 nv_enable_irq(dev);
4241         }
4242         return 0;
4243 exit:
4244         return -ENOMEM;
4245 }
4246
4247 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4248 {
4249         struct fe_priv *np = netdev_priv(dev);
4250
4251         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4252         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4253         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4254 }
4255
4256 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4257 {
4258         struct fe_priv *np = netdev_priv(dev);
4259         int adv, bmcr;
4260
4261         if ((!np->autoneg && np->duplex == 0) ||
4262             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4263                 printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
4264                        dev->name);
4265                 return -EINVAL;
4266         }
4267         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4268                 printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
4269                 return -EINVAL;
4270         }
4271
4272         netif_carrier_off(dev);
4273         if (netif_running(dev)) {
4274                 nv_disable_irq(dev);
4275                 netif_tx_lock_bh(dev);
4276                 spin_lock(&np->lock);
4277                 /* stop engines */
4278                 nv_stop_rx(dev);
4279                 nv_stop_tx(dev);
4280                 spin_unlock(&np->lock);
4281                 netif_tx_unlock_bh(dev);
4282         }
4283
4284         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4285         if (pause->rx_pause)
4286                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4287         if (pause->tx_pause)
4288                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4289
4290         if (np->autoneg && pause->autoneg) {
4291                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4292
4293                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4294                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4295                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
4296                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4297                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4298                         adv |=  ADVERTISE_PAUSE_ASYM;
4299                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4300
4301                 if (netif_running(dev))
4302                         printk(KERN_INFO "%s: link down.\n", dev->name);
4303                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4304                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4305                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4306         } else {
4307                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4308                 if (pause->rx_pause)
4309                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4310                 if (pause->tx_pause)
4311                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4312
4313                 if (!netif_running(dev))
4314                         nv_update_linkspeed(dev);
4315                 else
4316                         nv_update_pause(dev, np->pause_flags);
4317         }
4318
4319         if (netif_running(dev)) {
4320                 nv_start_rx(dev);
4321                 nv_start_tx(dev);
4322                 nv_enable_irq(dev);
4323         }
4324         return 0;
4325 }
4326
4327 static u32 nv_get_rx_csum(struct net_device *dev)
4328 {
4329         struct fe_priv *np = netdev_priv(dev);
4330         return (np->rx_csum) != 0;
4331 }
4332
4333 static int nv_set_rx_csum(struct net_device *dev, u32 data)
4334 {
4335         struct fe_priv *np = netdev_priv(dev);
4336         u8 __iomem *base = get_hwbase(dev);
4337         int retcode = 0;
4338
4339         if (np->driver_data & DEV_HAS_CHECKSUM) {
4340                 if (data) {
4341                         np->rx_csum = 1;
4342                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4343                 } else {
4344                         np->rx_csum = 0;
4345                         /* vlan is dependent on rx checksum offload */
4346                         if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
4347                                 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4348                 }
4349                 if (netif_running(dev)) {
4350                         spin_lock_irq(&np->lock);
4351                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4352                         spin_unlock_irq(&np->lock);
4353                 }
4354         } else {
4355                 return -EINVAL;
4356         }
4357
4358         return retcode;
4359 }
4360
4361 static int nv_set_tx_csum(struct net_device *dev, u32 data)
4362 {
4363         struct fe_priv *np = netdev_priv(dev);
4364
4365         if (np->driver_data & DEV_HAS_CHECKSUM)
4366                 return ethtool_op_set_tx_hw_csum(dev, data);
4367         else
4368                 return -EOPNOTSUPP;
4369 }
4370
4371 static int nv_set_sg(struct net_device *dev, u32 data)
4372 {
4373         struct fe_priv *np = netdev_priv(dev);
4374
4375         if (np->driver_data & DEV_HAS_CHECKSUM)
4376                 return ethtool_op_set_sg(dev, data);
4377         else
4378                 return -EOPNOTSUPP;
4379 }
4380
4381 static int nv_get_sset_count(struct net_device *dev, int sset)
4382 {
4383         struct fe_priv *np = netdev_priv(dev);
4384
4385         switch (sset) {
4386         case ETH_SS_TEST:
4387                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4388                         return NV_TEST_COUNT_EXTENDED;
4389                 else
4390                         return NV_TEST_COUNT_BASE;
4391         case ETH_SS_STATS:
4392                 if (np->driver_data & DEV_HAS_STATISTICS_V1)
4393                         return NV_DEV_STATISTICS_V1_COUNT;
4394                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4395                         return NV_DEV_STATISTICS_V2_COUNT;
4396                 else
4397                         return 0;
4398         default:
4399                 return -EOPNOTSUPP;
4400         }
4401 }
4402
4403 static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
4404 {
4405         struct fe_priv *np = netdev_priv(dev);
4406
4407         /* update stats */
4408         nv_do_stats_poll((unsigned long)dev);
4409
4410         memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4411 }
4412
4413 static int nv_link_test(struct net_device *dev)
4414 {
4415         struct fe_priv *np = netdev_priv(dev);
4416         int mii_status;
4417
4418         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4419         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4420
4421         /* check phy link status */
4422         if (!(mii_status & BMSR_LSTATUS))
4423                 return 0;
4424         else
4425                 return 1;
4426 }
4427
4428 static int nv_register_test(struct net_device *dev)
4429 {
4430         u8 __iomem *base = get_hwbase(dev);
4431         int i = 0;
4432         u32 orig_read, new_read;
4433
4434         do {
4435                 orig_read = readl(base + nv_registers_test[i].reg);
4436
4437                 /* xor with mask to toggle bits */
4438                 orig_read ^= nv_registers_test[i].mask;
4439
4440                 writel(orig_read, base + nv_registers_test[i].reg);
4441
4442                 new_read = readl(base + nv_registers_test[i].reg);
4443
4444                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4445                         return 0;
4446
4447                 /* restore original value */
4448                 orig_read ^= nv_registers_test[i].mask;
4449                 writel(orig_read, base + nv_registers_test[i].reg);
4450
4451         } while (nv_registers_test[++i].reg != 0);
4452
4453         return 1;
4454 }
4455
4456 static int nv_interrupt_test(struct net_device *dev)
4457 {
4458         struct fe_priv *np = netdev_priv(dev);
4459         u8 __iomem *base = get_hwbase(dev);
4460         int ret = 1;
4461         int testcnt;
4462         u32 save_msi_flags, save_poll_interval = 0;
4463
4464         if (netif_running(dev)) {
4465                 /* free current irq */
4466                 nv_free_irq(dev);
4467                 save_poll_interval = readl(base+NvRegPollingInterval);
4468         }
4469
4470         /* flag to test interrupt handler */
4471         np->intr_test = 0;
4472
4473         /* setup test irq */
4474         save_msi_flags = np->msi_flags;
4475         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4476         np->msi_flags |= 0x001; /* setup 1 vector */
4477         if (nv_request_irq(dev, 1))
4478                 return 0;
4479
4480         /* setup timer interrupt */
4481         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4482         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4483
4484         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4485
4486         /* wait for at least one interrupt */
4487         msleep(100);
4488
4489         spin_lock_irq(&np->lock);
4490
4491         /* flag should be set within ISR */
4492         testcnt = np->intr_test;
4493         if (!testcnt)
4494                 ret = 2;
4495
4496         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4497         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4498                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4499         else
4500                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4501
4502         spin_unlock_irq(&np->lock);
4503
4504         nv_free_irq(dev);
4505
4506         np->msi_flags = save_msi_flags;
4507
4508         if (netif_running(dev)) {
4509                 writel(save_poll_interval, base + NvRegPollingInterval);
4510                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4511                 /* restore original irq */
4512                 if (nv_request_irq(dev, 0))
4513                         return 0;
4514         }
4515
4516         return ret;
4517 }
4518
4519 static int nv_loopback_test(struct net_device *dev)
4520 {
4521         struct fe_priv *np = netdev_priv(dev);
4522         u8 __iomem *base = get_hwbase(dev);
4523         struct sk_buff *tx_skb, *rx_skb;
4524         dma_addr_t test_dma_addr;
4525         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4526         u32 flags;
4527         int len, i, pkt_len;
4528         u8 *pkt_data;
4529         u32 filter_flags = 0;
4530         u32 misc1_flags = 0;
4531         int ret = 1;
4532
4533         if (netif_running(dev)) {
4534                 nv_disable_irq(dev);
4535                 filter_flags = readl(base + NvRegPacketFilterFlags);
4536                 misc1_flags = readl(base + NvRegMisc1);
4537         } else {
4538                 nv_txrx_reset(dev);
4539         }
4540
4541         /* reinit driver view of the rx queue */
4542         set_bufsize(dev);
4543         nv_init_ring(dev);
4544
4545         /* setup hardware for loopback */
4546         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
4547         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
4548
4549         /* reinit nic view of the rx queue */
4550         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4551         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4552         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4553                 base + NvRegRingSizes);
4554         pci_push(base);
4555
4556         /* restart rx engine */
4557         nv_start_rx(dev);
4558         nv_start_tx(dev);
4559
4560         /* setup packet for tx */
4561         pkt_len = ETH_DATA_LEN;
4562         tx_skb = dev_alloc_skb(pkt_len);
4563         if (!tx_skb) {
4564                 printk(KERN_ERR "dev_alloc_skb() failed during loopback test"
4565                          " of %s\n", dev->name);
4566                 ret = 0;
4567                 goto out;
4568         }
4569         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
4570                                        skb_tailroom(tx_skb),
4571                                        PCI_DMA_FROMDEVICE);
4572         pkt_data = skb_put(tx_skb, pkt_len);
4573         for (i = 0; i < pkt_len; i++)
4574                 pkt_data[i] = (u8)(i & 0xff);
4575
4576         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4577                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
4578                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4579         } else {
4580                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
4581                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
4582                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4583         }
4584         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4585         pci_push(get_hwbase(dev));
4586
4587         msleep(500);
4588
4589         /* check for rx of the packet */
4590         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4591                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
4592                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
4593
4594         } else {
4595                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
4596                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
4597         }
4598
4599         if (flags & NV_RX_AVAIL) {
4600                 ret = 0;
4601         } else if (np->desc_ver == DESC_VER_1) {
4602                 if (flags & NV_RX_ERROR)
4603                         ret = 0;
4604         } else {
4605                 if (flags & NV_RX2_ERROR) {
4606                         ret = 0;
4607                 }
4608         }
4609
4610         if (ret) {
4611                 if (len != pkt_len) {
4612                         ret = 0;
4613                         dprintk(KERN_DEBUG "%s: loopback len mismatch %d vs %d\n",
4614                                 dev->name, len, pkt_len);
4615                 } else {
4616                         rx_skb = np->rx_skb[0].skb;
4617                         for (i = 0; i < pkt_len; i++) {
4618                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
4619                                         ret = 0;
4620                                         dprintk(KERN_DEBUG "%s: loopback pattern check failed on byte %d\n",
4621                                                 dev->name, i);
4622                                         break;
4623                                 }
4624                         }
4625                 }
4626         } else {
4627                 dprintk(KERN_DEBUG "%s: loopback - did not receive test packet\n", dev->name);
4628         }
4629
4630         pci_unmap_page(np->pci_dev, test_dma_addr,
4631                        (skb_end_pointer(tx_skb) - tx_skb->data),
4632                        PCI_DMA_TODEVICE);
4633         dev_kfree_skb_any(tx_skb);
4634  out:
4635         /* stop engines */
4636         nv_stop_rx(dev);
4637         nv_stop_tx(dev);
4638         nv_txrx_reset(dev);
4639         /* drain rx queue */
4640         nv_drain_rx(dev);
4641         nv_drain_tx(dev);
4642
4643         if (netif_running(dev)) {
4644                 writel(misc1_flags, base + NvRegMisc1);
4645                 writel(filter_flags, base + NvRegPacketFilterFlags);
4646                 nv_enable_irq(dev);
4647         }
4648
4649         return ret;
4650 }
4651
4652 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
4653 {
4654         struct fe_priv *np = netdev_priv(dev);
4655         u8 __iomem *base = get_hwbase(dev);
4656         int result;
4657         memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
4658
4659         if (!nv_link_test(dev)) {
4660                 test->flags |= ETH_TEST_FL_FAILED;
4661                 buffer[0] = 1;
4662         }
4663
4664         if (test->flags & ETH_TEST_FL_OFFLINE) {
4665                 if (netif_running(dev)) {
4666                         netif_stop_queue(dev);
4667 #ifdef CONFIG_FORCEDETH_NAPI
4668                         napi_disable(&np->napi);
4669 #endif
4670                         netif_tx_lock_bh(dev);
4671                         spin_lock_irq(&np->lock);
4672                         nv_disable_hw_interrupts(dev, np->irqmask);
4673                         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
4674                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4675                         } else {
4676                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4677                         }
4678                         /* stop engines */
4679                         nv_stop_rx(dev);
4680                         nv_stop_tx(dev);
4681                         nv_txrx_reset(dev);
4682                         /* drain rx queue */
4683                         nv_drain_rx(dev);
4684                         nv_drain_tx(dev);
4685                         spin_unlock_irq(&np->lock);
4686                         netif_tx_unlock_bh(dev);
4687                 }
4688
4689                 if (!nv_register_test(dev)) {
4690                         test->flags |= ETH_TEST_FL_FAILED;
4691                         buffer[1] = 1;
4692                 }
4693
4694                 result = nv_interrupt_test(dev);
4695                 if (result != 1) {
4696                         test->flags |= ETH_TEST_FL_FAILED;
4697                         buffer[2] = 1;
4698                 }
4699                 if (result == 0) {
4700                         /* bail out */
4701                         return;
4702                 }
4703
4704                 if (!nv_loopback_test(dev)) {
4705                         test->flags |= ETH_TEST_FL_FAILED;
4706                         buffer[3] = 1;
4707                 }
4708
4709                 if (netif_running(dev)) {
4710                         /* reinit driver view of the rx queue */
4711                         set_bufsize(dev);
4712                         if (nv_init_ring(dev)) {
4713                                 if (!np->in_shutdown)
4714                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4715                         }
4716                         /* reinit nic view of the rx queue */
4717                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4718                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4719                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4720                                 base + NvRegRingSizes);
4721                         pci_push(base);
4722                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4723                         pci_push(base);
4724                         /* restart rx engine */
4725                         nv_start_rx(dev);
4726                         nv_start_tx(dev);
4727                         netif_start_queue(dev);
4728 #ifdef CONFIG_FORCEDETH_NAPI
4729                         napi_enable(&np->napi);
4730 #endif
4731                         nv_enable_hw_interrupts(dev, np->irqmask);
4732                 }
4733         }
4734 }
4735
4736 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
4737 {
4738         switch (stringset) {
4739         case ETH_SS_STATS:
4740                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
4741                 break;
4742         case ETH_SS_TEST:
4743                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
4744                 break;
4745         }
4746 }
4747
4748 static const struct ethtool_ops ops = {
4749         .get_drvinfo = nv_get_drvinfo,
4750         .get_link = ethtool_op_get_link,
4751         .get_wol = nv_get_wol,
4752         .set_wol = nv_set_wol,
4753         .get_settings = nv_get_settings,
4754         .set_settings = nv_set_settings,
4755         .get_regs_len = nv_get_regs_len,
4756         .get_regs = nv_get_regs,
4757         .nway_reset = nv_nway_reset,
4758         .set_tso = nv_set_tso,
4759         .get_ringparam = nv_get_ringparam,
4760         .set_ringparam = nv_set_ringparam,
4761         .get_pauseparam = nv_get_pauseparam,
4762         .set_pauseparam = nv_set_pauseparam,
4763         .get_rx_csum = nv_get_rx_csum,
4764         .set_rx_csum = nv_set_rx_csum,
4765         .set_tx_csum = nv_set_tx_csum,
4766         .set_sg = nv_set_sg,
4767         .get_strings = nv_get_strings,
4768         .get_ethtool_stats = nv_get_ethtool_stats,
4769         .get_sset_count = nv_get_sset_count,
4770         .self_test = nv_self_test,
4771 };
4772
4773 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
4774 {
4775         struct fe_priv *np = get_nvpriv(dev);
4776
4777         spin_lock_irq(&np->lock);
4778
4779         /* save vlan group */
4780         np->vlangrp = grp;
4781
4782         if (grp) {
4783                 /* enable vlan on MAC */
4784                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
4785         } else {
4786                 /* disable vlan on MAC */
4787                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4788                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4789         }
4790
4791         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4792
4793         spin_unlock_irq(&np->lock);
4794 }
4795
4796 /* The mgmt unit and driver use a semaphore to access the phy during init */
4797 static int nv_mgmt_acquire_sema(struct net_device *dev)
4798 {
4799         u8 __iomem *base = get_hwbase(dev);
4800         int i;
4801         u32 tx_ctrl, mgmt_sema;
4802
4803         for (i = 0; i < 10; i++) {
4804                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
4805                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
4806                         break;
4807                 msleep(500);
4808         }
4809
4810         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
4811                 return 0;
4812
4813         for (i = 0; i < 2; i++) {
4814                 tx_ctrl = readl(base + NvRegTransmitterControl);
4815                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
4816                 writel(tx_ctrl, base + NvRegTransmitterControl);
4817
4818                 /* verify that semaphore was acquired */
4819                 tx_ctrl = readl(base + NvRegTransmitterControl);
4820                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
4821                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE))
4822                         return 1;
4823                 else
4824                         udelay(50);
4825         }
4826
4827         return 0;
4828 }
4829
4830 static int nv_open(struct net_device *dev)
4831 {
4832         struct fe_priv *np = netdev_priv(dev);
4833         u8 __iomem *base = get_hwbase(dev);
4834         int ret = 1;
4835         int oom, i;
4836
4837         dprintk(KERN_DEBUG "nv_open: begin\n");
4838
4839         /* erase previous misconfiguration */
4840         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4841                 nv_mac_reset(dev);
4842         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4843         writel(0, base + NvRegMulticastAddrB);
4844         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
4845         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
4846         writel(0, base + NvRegPacketFilterFlags);
4847
4848         writel(0, base + NvRegTransmitterControl);
4849         writel(0, base + NvRegReceiverControl);
4850
4851         writel(0, base + NvRegAdapterControl);
4852
4853         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
4854                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
4855
4856         /* initialize descriptor rings */
4857         set_bufsize(dev);
4858         oom = nv_init_ring(dev);
4859
4860         writel(0, base + NvRegLinkSpeed);
4861         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
4862         nv_txrx_reset(dev);
4863         writel(0, base + NvRegUnknownSetupReg6);
4864
4865         np->in_shutdown = 0;
4866
4867         /* give hw rings */
4868         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4869         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4870                 base + NvRegRingSizes);
4871
4872         writel(np->linkspeed, base + NvRegLinkSpeed);
4873         if (np->desc_ver == DESC_VER_1)
4874                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
4875         else
4876                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
4877         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4878         writel(np->vlanctl_bits, base + NvRegVlanControl);
4879         pci_push(base);
4880         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
4881         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
4882                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
4883                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
4884
4885         writel(0, base + NvRegMIIMask);
4886         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4887         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
4888
4889         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
4890         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
4891         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
4892         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4893
4894         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
4895         get_random_bytes(&i, sizeof(i));
4896         writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
4897         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
4898         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
4899         if (poll_interval == -1) {
4900                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
4901                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
4902                 else
4903                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4904         }
4905         else
4906                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
4907         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4908         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
4909                         base + NvRegAdapterControl);
4910         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
4911         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
4912         if (np->wolenabled)
4913                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
4914
4915         i = readl(base + NvRegPowerState);
4916         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
4917                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
4918
4919         pci_push(base);
4920         udelay(10);
4921         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
4922
4923         nv_disable_hw_interrupts(dev, np->irqmask);
4924         pci_push(base);
4925         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
4926         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4927         pci_push(base);
4928
4929         if (nv_request_irq(dev, 0)) {
4930                 goto out_drain;
4931         }
4932
4933         /* ask for interrupts */
4934         nv_enable_hw_interrupts(dev, np->irqmask);
4935
4936         spin_lock_irq(&np->lock);
4937         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4938         writel(0, base + NvRegMulticastAddrB);
4939         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
4940         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
4941         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
4942         /* One manual link speed update: Interrupts are enabled, future link
4943          * speed changes cause interrupts and are handled by nv_link_irq().
4944          */
4945         {
4946                 u32 miistat;
4947                 miistat = readl(base + NvRegMIIStatus);
4948                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
4949                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
4950         }
4951         /* set linkspeed to invalid value, thus force nv_update_linkspeed
4952          * to init hw */
4953         np->linkspeed = 0;
4954         ret = nv_update_linkspeed(dev);
4955         nv_start_rx(dev);
4956         nv_start_tx(dev);
4957         netif_start_queue(dev);
4958 #ifdef CONFIG_FORCEDETH_NAPI
4959         napi_enable(&np->napi);
4960 #endif
4961
4962         if (ret) {
4963                 netif_carrier_on(dev);
4964         } else {
4965                 printk(KERN_INFO "%s: no link during initialization.\n", dev->name);
4966                 netif_carrier_off(dev);
4967         }
4968         if (oom)
4969                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4970
4971         /* start statistics timer */
4972         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2))
4973                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
4974
4975         spin_unlock_irq(&np->lock);
4976
4977         return 0;
4978 out_drain:
4979         drain_ring(dev);
4980         return ret;
4981 }
4982
4983 static int nv_close(struct net_device *dev)
4984 {
4985         struct fe_priv *np = netdev_priv(dev);
4986         u8 __iomem *base;
4987
4988         spin_lock_irq(&np->lock);
4989         np->in_shutdown = 1;
4990         spin_unlock_irq(&np->lock);
4991 #ifdef CONFIG_FORCEDETH_NAPI
4992         napi_disable(&np->napi);
4993 #endif
4994         synchronize_irq(np->pci_dev->irq);
4995
4996         del_timer_sync(&np->oom_kick);
4997         del_timer_sync(&np->nic_poll);
4998         del_timer_sync(&np->stats_poll);
4999
5000         netif_stop_queue(dev);
5001         spin_lock_irq(&np->lock);
5002         nv_stop_tx(dev);
5003         nv_stop_rx(dev);
5004         nv_txrx_reset(dev);
5005
5006         /* disable interrupts on the nic or we will lock up */
5007         base = get_hwbase(dev);
5008         nv_disable_hw_interrupts(dev, np->irqmask);
5009         pci_push(base);
5010         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
5011
5012         spin_unlock_irq(&np->lock);
5013
5014         nv_free_irq(dev);
5015
5016         drain_ring(dev);
5017
5018         if (np->wolenabled) {
5019                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5020                 nv_start_rx(dev);
5021         }
5022
5023         /* FIXME: power down nic */
5024
5025         return 0;
5026 }
5027
5028 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5029 {
5030         struct net_device *dev;
5031         struct fe_priv *np;
5032         unsigned long addr;
5033         u8 __iomem *base;
5034         int err, i;
5035         u32 powerstate, txreg;
5036         u32 phystate_orig = 0, phystate;
5037         int phyinitialized = 0;
5038         DECLARE_MAC_BUF(mac);
5039         static int printed_version;
5040
5041         if (!printed_version++)
5042                 printk(KERN_INFO "%s: Reverse Engineered nForce ethernet"
5043                        " driver. Version %s.\n", DRV_NAME, FORCEDETH_VERSION);
5044
5045         dev = alloc_etherdev(sizeof(struct fe_priv));
5046         err = -ENOMEM;
5047         if (!dev)
5048                 goto out;
5049
5050         np = netdev_priv(dev);
5051         np->dev = dev;
5052         np->pci_dev = pci_dev;
5053         spin_lock_init(&np->lock);
5054         SET_NETDEV_DEV(dev, &pci_dev->dev);
5055
5056         init_timer(&np->oom_kick);
5057         np->oom_kick.data = (unsigned long) dev;
5058         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
5059         init_timer(&np->nic_poll);
5060         np->nic_poll.data = (unsigned long) dev;
5061         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
5062         init_timer(&np->stats_poll);
5063         np->stats_poll.data = (unsigned long) dev;
5064         np->stats_poll.function = &nv_do_stats_poll;    /* timer handler */
5065
5066         err = pci_enable_device(pci_dev);
5067         if (err)
5068                 goto out_free;
5069
5070         pci_set_master(pci_dev);
5071
5072         err = pci_request_regions(pci_dev, DRV_NAME);
5073         if (err < 0)
5074                 goto out_disable;
5075
5076         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2))
5077                 np->register_size = NV_PCI_REGSZ_VER3;
5078         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5079                 np->register_size = NV_PCI_REGSZ_VER2;
5080         else
5081                 np->register_size = NV_PCI_REGSZ_VER1;
5082
5083         err = -EINVAL;
5084         addr = 0;
5085         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5086                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
5087                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
5088                                 pci_resource_len(pci_dev, i),
5089                                 pci_resource_flags(pci_dev, i));
5090                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5091                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5092                         addr = pci_resource_start(pci_dev, i);
5093                         break;
5094                 }
5095         }
5096         if (i == DEVICE_COUNT_RESOURCE) {
5097                 dev_printk(KERN_INFO, &pci_dev->dev,
5098                            "Couldn't find register window\n");
5099                 goto out_relreg;
5100         }
5101
5102         /* copy of driver data */
5103         np->driver_data = id->driver_data;
5104
5105         /* handle different descriptor versions */
5106         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5107                 /* packet format 3: supports 40-bit addressing */
5108                 np->desc_ver = DESC_VER_3;
5109                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5110                 if (dma_64bit) {
5111                         if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK))
5112                                 dev_printk(KERN_INFO, &pci_dev->dev,
5113                                         "64-bit DMA failed, using 32-bit addressing\n");
5114                         else
5115                                 dev->features |= NETIF_F_HIGHDMA;
5116                         if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
5117                                 dev_printk(KERN_INFO, &pci_dev->dev,
5118                                         "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5119                         }
5120                 }
5121         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5122                 /* packet format 2: supports jumbo frames */
5123                 np->desc_ver = DESC_VER_2;
5124                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5125         } else {
5126                 /* original packet format */
5127                 np->desc_ver = DESC_VER_1;
5128                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5129         }
5130
5131         np->pkt_limit = NV_PKTLIMIT_1;
5132         if (id->driver_data & DEV_HAS_LARGEDESC)
5133                 np->pkt_limit = NV_PKTLIMIT_2;
5134
5135         if (id->driver_data & DEV_HAS_CHECKSUM) {
5136                 np->rx_csum = 1;
5137                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5138                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
5139                 dev->features |= NETIF_F_TSO;
5140         }
5141
5142         np->vlanctl_bits = 0;
5143         if (id->driver_data & DEV_HAS_VLAN) {
5144                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5145                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
5146                 dev->vlan_rx_register = nv_vlan_rx_register;
5147         }
5148
5149         np->msi_flags = 0;
5150         if ((id->driver_data & DEV_HAS_MSI) && msi) {
5151                 np->msi_flags |= NV_MSI_CAPABLE;
5152         }
5153         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5154                 np->msi_flags |= NV_MSI_X_CAPABLE;
5155         }
5156
5157         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5158         if (id->driver_data & DEV_HAS_PAUSEFRAME_TX) {
5159                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5160         }
5161
5162
5163         err = -ENOMEM;
5164         np->base = ioremap(addr, np->register_size);
5165         if (!np->base)
5166                 goto out_relreg;
5167         dev->base_addr = (unsigned long)np->base;
5168
5169         dev->irq = pci_dev->irq;
5170
5171         np->rx_ring_size = RX_RING_DEFAULT;
5172         np->tx_ring_size = TX_RING_DEFAULT;
5173
5174         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
5175                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5176                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5177                                         &np->ring_addr);
5178                 if (!np->rx_ring.orig)
5179                         goto out_unmap;
5180                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5181         } else {
5182                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5183                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5184                                         &np->ring_addr);
5185                 if (!np->rx_ring.ex)
5186                         goto out_unmap;
5187                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5188         }
5189         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5190         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5191         if (!np->rx_skb || !np->tx_skb)
5192                 goto out_freering;
5193
5194         dev->open = nv_open;
5195         dev->stop = nv_close;
5196         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
5197                 dev->hard_start_xmit = nv_start_xmit;
5198         else
5199                 dev->hard_start_xmit = nv_start_xmit_optimized;
5200         dev->get_stats = nv_get_stats;
5201         dev->change_mtu = nv_change_mtu;
5202         dev->set_mac_address = nv_set_mac_address;
5203         dev->set_multicast_list = nv_set_multicast;
5204 #ifdef CONFIG_NET_POLL_CONTROLLER
5205         dev->poll_controller = nv_poll_controller;
5206 #endif
5207 #ifdef CONFIG_FORCEDETH_NAPI
5208         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5209 #endif
5210         SET_ETHTOOL_OPS(dev, &ops);
5211         dev->tx_timeout = nv_tx_timeout;
5212         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5213
5214         pci_set_drvdata(pci_dev, dev);
5215
5216         /* read the mac address */
5217         base = get_hwbase(dev);
5218         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5219         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5220
5221         /* check the workaround bit for correct mac address order */
5222         txreg = readl(base + NvRegTransmitPoll);
5223         if ((txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) ||
5224             (id->driver_data & DEV_HAS_CORRECT_MACADDR)) {
5225                 /* mac address is already in correct order */
5226                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5227                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5228                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5229                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5230                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5231                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5232         } else {
5233                 /* need to reverse mac address to correct order */
5234                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5235                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5236                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5237                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5238                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5239                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5240                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5241         }
5242         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
5243
5244         if (!is_valid_ether_addr(dev->perm_addr)) {
5245                 /*
5246                  * Bad mac address. At least one bios sets the mac address
5247                  * to 01:23:45:67:89:ab
5248                  */
5249                 dev_printk(KERN_ERR, &pci_dev->dev,
5250                         "Invalid Mac address detected: %s\n",
5251                         print_mac(mac, dev->dev_addr));
5252                 dev_printk(KERN_ERR, &pci_dev->dev,
5253                         "Please complain to your hardware vendor. Switching to a random MAC.\n");
5254                 dev->dev_addr[0] = 0x00;
5255                 dev->dev_addr[1] = 0x00;
5256                 dev->dev_addr[2] = 0x6c;
5257                 get_random_bytes(&dev->dev_addr[3], 3);
5258         }
5259
5260         dprintk(KERN_DEBUG "%s: MAC Address %s\n",
5261                 pci_name(pci_dev), print_mac(mac, dev->dev_addr));
5262
5263         /* set mac address */
5264         nv_copy_mac_to_hw(dev);
5265
5266         /* disable WOL */
5267         writel(0, base + NvRegWakeUpFlags);
5268         np->wolenabled = 0;
5269
5270         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5271
5272                 /* take phy and nic out of low power mode */
5273                 powerstate = readl(base + NvRegPowerState2);
5274                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5275                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
5276                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
5277                     pci_dev->revision >= 0xA3)
5278                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5279                 writel(powerstate, base + NvRegPowerState2);
5280         }
5281
5282         if (np->desc_ver == DESC_VER_1) {
5283                 np->tx_flags = NV_TX_VALID;
5284         } else {
5285                 np->tx_flags = NV_TX2_VALID;
5286         }
5287         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
5288                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5289                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5290                         np->msi_flags |= 0x0003;
5291         } else {
5292                 np->irqmask = NVREG_IRQMASK_CPU;
5293                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5294                         np->msi_flags |= 0x0001;
5295         }
5296
5297         if (id->driver_data & DEV_NEED_TIMERIRQ)
5298                 np->irqmask |= NVREG_IRQ_TIMER;
5299         if (id->driver_data & DEV_NEED_LINKTIMER) {
5300                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
5301                 np->need_linktimer = 1;
5302                 np->link_timeout = jiffies + LINK_TIMEOUT;
5303         } else {
5304                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
5305                 np->need_linktimer = 0;
5306         }
5307
5308         /* clear phy state and temporarily halt phy interrupts */
5309         writel(0, base + NvRegMIIMask);
5310         phystate = readl(base + NvRegAdapterControl);
5311         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5312                 phystate_orig = 1;
5313                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5314                 writel(phystate, base + NvRegAdapterControl);
5315         }
5316         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5317
5318         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5319                 /* management unit running on the mac? */
5320                 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) {
5321                         np->mac_in_use = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST;
5322                         dprintk(KERN_INFO "%s: mgmt unit is running. mac in use %x.\n", pci_name(pci_dev), np->mac_in_use);
5323                         if (nv_mgmt_acquire_sema(dev)) {
5324                                 /* management unit setup the phy already? */
5325                                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5326                                     NVREG_XMITCTL_SYNC_PHY_INIT) {
5327                                         /* phy is inited by mgmt unit */
5328                                         phyinitialized = 1;
5329                                         dprintk(KERN_INFO "%s: Phy already initialized by mgmt unit.\n", pci_name(pci_dev));
5330                                 } else {
5331                                         /* we need to init the phy */
5332                                 }
5333                         }
5334                 }
5335         }
5336
5337         /* find a suitable phy */
5338         for (i = 1; i <= 32; i++) {
5339                 int id1, id2;
5340                 int phyaddr = i & 0x1F;
5341
5342                 spin_lock_irq(&np->lock);
5343                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5344                 spin_unlock_irq(&np->lock);
5345                 if (id1 < 0 || id1 == 0xffff)
5346                         continue;
5347                 spin_lock_irq(&np->lock);
5348                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5349                 spin_unlock_irq(&np->lock);
5350                 if (id2 < 0 || id2 == 0xffff)
5351                         continue;
5352
5353                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5354                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5355                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5356                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
5357                         pci_name(pci_dev), id1, id2, phyaddr);
5358                 np->phyaddr = phyaddr;
5359                 np->phy_oui = id1 | id2;
5360                 break;
5361         }
5362         if (i == 33) {
5363                 dev_printk(KERN_INFO, &pci_dev->dev,
5364                         "open: Could not find a valid PHY.\n");
5365                 goto out_error;
5366         }
5367
5368         if (!phyinitialized) {
5369                 /* reset it */
5370                 phy_init(dev);
5371         } else {
5372                 /* see if it is a gigabit phy */
5373                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5374                 if (mii_status & PHY_GIGABIT) {
5375                         np->gigabit = PHY_GIGABIT;
5376                 }
5377         }
5378
5379         /* set default link speed settings */
5380         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5381         np->duplex = 0;
5382         np->autoneg = 1;
5383
5384         err = register_netdev(dev);
5385         if (err) {
5386                 dev_printk(KERN_INFO, &pci_dev->dev,
5387                            "unable to register netdev: %d\n", err);
5388                 goto out_error;
5389         }
5390
5391         dev_printk(KERN_INFO, &pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, "
5392                    "addr %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
5393                    dev->name,
5394                    np->phy_oui,
5395                    np->phyaddr,
5396                    dev->dev_addr[0],
5397                    dev->dev_addr[1],
5398                    dev->dev_addr[2],
5399                    dev->dev_addr[3],
5400                    dev->dev_addr[4],
5401                    dev->dev_addr[5]);
5402
5403         dev_printk(KERN_INFO, &pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
5404                    dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
5405                    dev->features & (NETIF_F_HW_CSUM | NETIF_F_SG) ?
5406                         "csum " : "",
5407                    dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
5408                         "vlan " : "",
5409                    id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
5410                    id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
5411                    id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
5412                    np->gigabit == PHY_GIGABIT ? "gbit " : "",
5413                    np->need_linktimer ? "lnktim " : "",
5414                    np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
5415                    np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
5416                    np->desc_ver);
5417
5418         return 0;
5419
5420 out_error:
5421         if (phystate_orig)
5422                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5423         pci_set_drvdata(pci_dev, NULL);
5424 out_freering:
5425         free_rings(dev);
5426 out_unmap:
5427         iounmap(get_hwbase(dev));
5428 out_relreg:
5429         pci_release_regions(pci_dev);
5430 out_disable:
5431         pci_disable_device(pci_dev);
5432 out_free:
5433         free_netdev(dev);
5434 out:
5435         return err;
5436 }
5437
5438 static void __devexit nv_remove(struct pci_dev *pci_dev)
5439 {
5440         struct net_device *dev = pci_get_drvdata(pci_dev);
5441         struct fe_priv *np = netdev_priv(dev);
5442         u8 __iomem *base = get_hwbase(dev);
5443
5444         unregister_netdev(dev);
5445
5446         /* special op: write back the misordered MAC address - otherwise
5447          * the next nv_probe would see a wrong address.
5448          */
5449         writel(np->orig_mac[0], base + NvRegMacAddrA);
5450         writel(np->orig_mac[1], base + NvRegMacAddrB);
5451         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
5452                base + NvRegTransmitPoll);
5453
5454         /* free all structures */
5455         free_rings(dev);
5456         iounmap(get_hwbase(dev));
5457         pci_release_regions(pci_dev);
5458         pci_disable_device(pci_dev);
5459         free_netdev(dev);
5460         pci_set_drvdata(pci_dev, NULL);
5461 }
5462
5463 #ifdef CONFIG_PM
5464 static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
5465 {
5466         struct net_device *dev = pci_get_drvdata(pdev);
5467         struct fe_priv *np = netdev_priv(dev);
5468
5469         if (!netif_running(dev))
5470                 goto out;
5471
5472         netif_device_detach(dev);
5473
5474         // Gross.
5475         nv_close(dev);
5476
5477         pci_save_state(pdev);
5478         pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
5479         pci_set_power_state(pdev, pci_choose_state(pdev, state));
5480 out:
5481         return 0;
5482 }
5483
5484 static int nv_resume(struct pci_dev *pdev)
5485 {
5486         struct net_device *dev = pci_get_drvdata(pdev);
5487         int rc = 0;
5488
5489         if (!netif_running(dev))
5490                 goto out;
5491
5492         netif_device_attach(dev);
5493
5494         pci_set_power_state(pdev, PCI_D0);
5495         pci_restore_state(pdev);
5496         pci_enable_wake(pdev, PCI_D0, 0);
5497
5498         rc = nv_open(dev);
5499 out:
5500         return rc;
5501 }
5502 #else
5503 #define nv_suspend NULL
5504 #define nv_resume NULL
5505 #endif /* CONFIG_PM */
5506
5507 static struct pci_device_id pci_tbl[] = {
5508         {       /* nForce Ethernet Controller */
5509                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
5510                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5511         },
5512         {       /* nForce2 Ethernet Controller */
5513                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
5514                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5515         },
5516         {       /* nForce3 Ethernet Controller */
5517                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
5518                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5519         },
5520         {       /* nForce3 Ethernet Controller */
5521                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
5522                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5523         },
5524         {       /* nForce3 Ethernet Controller */
5525                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
5526                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5527         },
5528         {       /* nForce3 Ethernet Controller */
5529                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
5530                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5531         },
5532         {       /* nForce3 Ethernet Controller */
5533                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
5534                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5535         },
5536         {       /* CK804 Ethernet Controller */
5537                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
5538                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1,
5539         },
5540         {       /* CK804 Ethernet Controller */
5541                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
5542                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1,
5543         },
5544         {       /* MCP04 Ethernet Controller */
5545                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
5546                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1,
5547         },
5548         {       /* MCP04 Ethernet Controller */
5549                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
5550                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1,
5551         },
5552         {       /* MCP51 Ethernet Controller */
5553                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
5554                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
5555         },
5556         {       /* MCP51 Ethernet Controller */
5557                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
5558                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
5559         },
5560         {       /* MCP55 Ethernet Controller */
5561                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
5562                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5563         },
5564         {       /* MCP55 Ethernet Controller */
5565                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
5566                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5567         },
5568         {       /* MCP61 Ethernet Controller */
5569                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_16),
5570                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5571         },
5572         {       /* MCP61 Ethernet Controller */
5573                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_17),
5574                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5575         },
5576         {       /* MCP61 Ethernet Controller */
5577                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_18),
5578                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5579         },
5580         {       /* MCP61 Ethernet Controller */
5581                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_19),
5582                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5583         },
5584         {       /* MCP65 Ethernet Controller */
5585                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_20),
5586                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5587         },
5588         {       /* MCP65 Ethernet Controller */
5589                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_21),
5590                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5591         },
5592         {       /* MCP65 Ethernet Controller */
5593                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_22),
5594                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5595         },
5596         {       /* MCP65 Ethernet Controller */
5597                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_23),
5598                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5599         },
5600         {       /* MCP67 Ethernet Controller */
5601                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_24),
5602                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5603         },
5604         {       /* MCP67 Ethernet Controller */
5605                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_25),
5606                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5607         },
5608         {       /* MCP67 Ethernet Controller */
5609                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_26),
5610                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5611         },
5612         {       /* MCP67 Ethernet Controller */
5613                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_27),
5614                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5615         },
5616         {       /* MCP73 Ethernet Controller */
5617                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_28),
5618                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5619         },
5620         {       /* MCP73 Ethernet Controller */
5621                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_29),
5622                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5623         },
5624         {       /* MCP73 Ethernet Controller */
5625                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_30),
5626                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5627         },
5628         {       /* MCP73 Ethernet Controller */
5629                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_31),
5630                 .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_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5631         },
5632         {       /* MCP77 Ethernet Controller */
5633                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_32),
5634                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5635         },
5636         {       /* MCP77 Ethernet Controller */
5637                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_33),
5638                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5639         },
5640         {       /* MCP77 Ethernet Controller */
5641                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_34),
5642                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5643         },
5644         {       /* MCP77 Ethernet Controller */
5645                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_35),
5646                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5647         },
5648         {       /* MCP79 Ethernet Controller */
5649                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_36),
5650                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5651         },
5652         {       /* MCP79 Ethernet Controller */
5653                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_37),
5654                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5655         },
5656         {       /* MCP79 Ethernet Controller */
5657                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_38),
5658                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5659         },
5660         {       /* MCP79 Ethernet Controller */
5661                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_39),
5662                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
5663         },
5664         {0,},
5665 };
5666
5667 static struct pci_driver driver = {
5668         .name           = DRV_NAME,
5669         .id_table       = pci_tbl,
5670         .probe          = nv_probe,
5671         .remove         = __devexit_p(nv_remove),
5672         .suspend        = nv_suspend,
5673         .resume         = nv_resume,
5674 };
5675
5676 static int __init init_nic(void)
5677 {
5678         return pci_register_driver(&driver);
5679 }
5680
5681 static void __exit exit_nic(void)
5682 {
5683         pci_unregister_driver(&driver);
5684 }
5685
5686 module_param(max_interrupt_work, int, 0);
5687 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
5688 module_param(optimization_mode, int, 0);
5689 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.");
5690 module_param(poll_interval, int, 0);
5691 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.");
5692 module_param(msi, int, 0);
5693 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
5694 module_param(msix, int, 0);
5695 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
5696 module_param(dma_64bit, int, 0);
5697 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
5698
5699 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
5700 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
5701 MODULE_LICENSE("GPL");
5702
5703 MODULE_DEVICE_TABLE(pci, pci_tbl);
5704
5705 module_init(init_nic);
5706 module_exit(exit_nic);