drivers/net/ethernet/nvidia/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) 2004,2005,2006,2007,2008,2009 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, see <http://www.gnu.org/licenses/>.
  30  *
  31  * Known bugs:
  32  * We suspect that on some hardware no TX done interrupts are generated.
  33  * This means recovery from netif_stop_queue only happens if the hw timer
  34  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
  35  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
  36  * If your hardware reliably generates tx done interrupts, then you can remove
  37  * DEV_NEED_TIMERIRQ from the driver_data flags.
  38  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  39  * superfluous timer interrupts from the nic.
  40  */
  41
  42 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  43
  44 #define FORCEDETH_VERSION               "0.64"
  45 #define DRV_NAME                        "forcedeth"
  46
  47 #include <linux/module.h>
  48 #include <linux/types.h>
  49 #include <linux/pci.h>
  50 #include <linux/interrupt.h>
  51 #include <linux/netdevice.h>
  52 #include <linux/etherdevice.h>
  53 #include <linux/delay.h>
  54 #include <linux/sched.h>
  55 #include <linux/spinlock.h>
  56 #include <linux/ethtool.h>
  57 #include <linux/timer.h>
  58 #include <linux/skbuff.h>
  59 #include <linux/mii.h>
  60 #include <linux/random.h>
  61 #include <linux/if_vlan.h>
  62 #include <linux/dma-mapping.h>
  63 #include <linux/slab.h>
  64 #include <linux/uaccess.h>
  65 #include <linux/prefetch.h>
  66 #include <linux/u64_stats_sync.h>
  67 #include <linux/io.h>
  68
  69 #include <asm/irq.h>
  70
  71 #define TX_WORK_PER_LOOP  64
  72 #define RX_WORK_PER_LOOP  64
  73
  74 /*
  75  * Hardware access:
  76  */
  77
  78 #define DEV_NEED_TIMERIRQ          0x0000001  /* set the timer irq flag in the irq mask */
  79 #define DEV_NEED_LINKTIMER         0x0000002  /* poll link settings. Relies on the timer irq */
  80 #define DEV_HAS_LARGEDESC          0x0000004  /* device supports jumbo frames and needs packet format 2 */
  81 #define DEV_HAS_HIGH_DMA           0x0000008  /* device supports 64bit dma */
  82 #define DEV_HAS_CHECKSUM           0x0000010  /* device supports tx and rx checksum offloads */
  83 #define DEV_HAS_VLAN               0x0000020  /* device supports vlan tagging and striping */
  84 #define DEV_HAS_MSI                0x0000040  /* device supports MSI */
  85 #define DEV_HAS_MSI_X              0x0000080  /* device supports MSI-X */
  86 #define DEV_HAS_POWER_CNTRL        0x0000100  /* device supports power savings */
  87 #define DEV_HAS_STATISTICS_V1      0x0000200  /* device supports hw statistics version 1 */
  88 #define DEV_HAS_STATISTICS_V2      0x0000400  /* device supports hw statistics version 2 */
  89 #define DEV_HAS_STATISTICS_V3      0x0000800  /* device supports hw statistics version 3 */
  90 #define DEV_HAS_STATISTICS_V12     0x0000600  /* device supports hw statistics version 1 and 2 */
  91 #define DEV_HAS_STATISTICS_V123    0x0000e00  /* device supports hw statistics version 1, 2, and 3 */
  92 #define DEV_HAS_TEST_EXTENDED      0x0001000  /* device supports extended diagnostic test */
  93 #define DEV_HAS_MGMT_UNIT          0x0002000  /* device supports management unit */
  94 #define DEV_HAS_CORRECT_MACADDR    0x0004000  /* device supports correct mac address order */
  95 #define DEV_HAS_COLLISION_FIX      0x0008000  /* device supports tx collision fix */
  96 #define DEV_HAS_PAUSEFRAME_TX_V1   0x0010000  /* device supports tx pause frames version 1 */
  97 #define DEV_HAS_PAUSEFRAME_TX_V2   0x0020000  /* device supports tx pause frames version 2 */
  98 #define DEV_HAS_PAUSEFRAME_TX_V3   0x0040000  /* device supports tx pause frames version 3 */
  99 #define DEV_NEED_TX_LIMIT          0x0080000  /* device needs to limit tx */
 100 #define DEV_NEED_TX_LIMIT2         0x0180000  /* device needs to limit tx, expect for some revs */
 101 #define DEV_HAS_GEAR_MODE          0x0200000  /* device supports gear mode */
 102 #define DEV_NEED_PHY_INIT_FIX      0x0400000  /* device needs specific phy workaround */
 103 #define DEV_NEED_LOW_POWER_FIX     0x0800000  /* device needs special power up workaround */
 104 #define DEV_NEED_MSI_FIX           0x1000000  /* device needs msi workaround */
 105
 106 enum {
 107         NvRegIrqStatus = 0x000,
 108 #define NVREG_IRQSTAT_MIIEVENT  0x040
 109 #define NVREG_IRQSTAT_MASK              0x83ff
 110         NvRegIrqMask = 0x004,
 111 #define NVREG_IRQ_RX_ERROR              0x0001
 112 #define NVREG_IRQ_RX                    0x0002
 113 #define NVREG_IRQ_RX_NOBUF              0x0004
 114 #define NVREG_IRQ_TX_ERR                0x0008
 115 #define NVREG_IRQ_TX_OK                 0x0010
 116 #define NVREG_IRQ_TIMER                 0x0020
 117 #define NVREG_IRQ_LINK                  0x0040
 118 #define NVREG_IRQ_RX_FORCED             0x0080
 119 #define NVREG_IRQ_TX_FORCED             0x0100
 120 #define NVREG_IRQ_RECOVER_ERROR         0x8200
 121 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 122 #define NVREG_IRQMASK_CPU               0x0060
 123 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 124 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 125 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 126
 127         NvRegUnknownSetupReg6 = 0x008,
 128 #define NVREG_UNKSETUP6_VAL             3
 129
 130 /*
 131  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 132  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 133  */
 134         NvRegPollingInterval = 0x00c,
 135 #define NVREG_POLL_DEFAULT_THROUGHPUT   65535 /* backup tx cleanup if loop max reached */
 136 #define NVREG_POLL_DEFAULT_CPU  13
 137         NvRegMSIMap0 = 0x020,
 138         NvRegMSIMap1 = 0x024,
 139         NvRegMSIIrqMask = 0x030,
 140 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 141         NvRegMisc1 = 0x080,
 142 #define NVREG_MISC1_PAUSE_TX    0x01
 143 #define NVREG_MISC1_HD          0x02
 144 #define NVREG_MISC1_FORCE       0x3b0f3c
 145
 146         NvRegMacReset = 0x34,
 147 #define NVREG_MAC_RESET_ASSERT  0x0F3
 148         NvRegTransmitterControl = 0x084,
 149 #define NVREG_XMITCTL_START     0x01
 150 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 151 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 152 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 153 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 154 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 155 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 156 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 157 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 158 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 159 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
 160 #define NVREG_XMITCTL_DATA_START        0x00100000
 161 #define NVREG_XMITCTL_DATA_READY        0x00010000
 162 #define NVREG_XMITCTL_DATA_ERROR        0x00020000
 163         NvRegTransmitterStatus = 0x088,
 164 #define NVREG_XMITSTAT_BUSY     0x01
 165
 166         NvRegPacketFilterFlags = 0x8c,
 167 #define NVREG_PFF_PAUSE_RX      0x08
 168 #define NVREG_PFF_ALWAYS        0x7F0000
 169 #define NVREG_PFF_PROMISC       0x80
 170 #define NVREG_PFF_MYADDR        0x20
 171 #define NVREG_PFF_LOOPBACK      0x10
 172
 173         NvRegOffloadConfig = 0x90,
 174 #define NVREG_OFFLOAD_HOMEPHY   0x601
 175 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 176         NvRegReceiverControl = 0x094,
 177 #define NVREG_RCVCTL_START      0x01
 178 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
 179         NvRegReceiverStatus = 0x98,
 180 #define NVREG_RCVSTAT_BUSY      0x01
 181
 182         NvRegSlotTime = 0x9c,
 183 #define NVREG_SLOTTIME_LEGBF_ENABLED    0x80000000
 184 #define NVREG_SLOTTIME_10_100_FULL      0x00007f00
 185 #define NVREG_SLOTTIME_1000_FULL        0x0003ff00
 186 #define NVREG_SLOTTIME_HALF             0x0000ff00
 187 #define NVREG_SLOTTIME_DEFAULT          0x00007f00
 188 #define NVREG_SLOTTIME_MASK             0x000000ff
 189
 190         NvRegTxDeferral = 0xA0,
 191 #define NVREG_TX_DEFERRAL_DEFAULT               0x15050f
 192 #define NVREG_TX_DEFERRAL_RGMII_10_100          0x16070f
 193 #define NVREG_TX_DEFERRAL_RGMII_1000            0x14050f
 194 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_10      0x16190f
 195 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_100     0x16300f
 196 #define NVREG_TX_DEFERRAL_MII_STRETCH           0x152000
 197         NvRegRxDeferral = 0xA4,
 198 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 199         NvRegMacAddrA = 0xA8,
 200         NvRegMacAddrB = 0xAC,
 201         NvRegMulticastAddrA = 0xB0,
 202 #define NVREG_MCASTADDRA_FORCE  0x01
 203         NvRegMulticastAddrB = 0xB4,
 204         NvRegMulticastMaskA = 0xB8,
 205 #define NVREG_MCASTMASKA_NONE           0xffffffff
 206         NvRegMulticastMaskB = 0xBC,
 207 #define NVREG_MCASTMASKB_NONE           0xffff
 208
 209         NvRegPhyInterface = 0xC0,
 210 #define PHY_RGMII               0x10000000
 211         NvRegBackOffControl = 0xC4,
 212 #define NVREG_BKOFFCTRL_DEFAULT                 0x70000000
 213 #define NVREG_BKOFFCTRL_SEED_MASK               0x000003ff
 214 #define NVREG_BKOFFCTRL_SELECT                  24
 215 #define NVREG_BKOFFCTRL_GEAR                    12
 216
 217         NvRegTxRingPhysAddr = 0x100,
 218         NvRegRxRingPhysAddr = 0x104,
 219         NvRegRingSizes = 0x108,
 220 #define NVREG_RINGSZ_TXSHIFT 0
 221 #define NVREG_RINGSZ_RXSHIFT 16
 222         NvRegTransmitPoll = 0x10c,
 223 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 224         NvRegLinkSpeed = 0x110,
 225 #define NVREG_LINKSPEED_FORCE 0x10000
 226 #define NVREG_LINKSPEED_10      1000
 227 #define NVREG_LINKSPEED_100     100
 228 #define NVREG_LINKSPEED_1000    50
 229 #define NVREG_LINKSPEED_MASK    (0xFFF)
 230         NvRegUnknownSetupReg5 = 0x130,
 231 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 232         NvRegTxWatermark = 0x13c,
 233 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 234 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 235 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 236         NvRegTxRxControl = 0x144,
 237 #define NVREG_TXRXCTL_KICK      0x0001
 238 #define NVREG_TXRXCTL_BIT1      0x0002
 239 #define NVREG_TXRXCTL_BIT2      0x0004
 240 #define NVREG_TXRXCTL_IDLE      0x0008
 241 #define NVREG_TXRXCTL_RESET     0x0010
 242 #define NVREG_TXRXCTL_RXCHECK   0x0400
 243 #define NVREG_TXRXCTL_DESC_1    0
 244 #define NVREG_TXRXCTL_DESC_2    0x002100
 245 #define NVREG_TXRXCTL_DESC_3    0xc02200
 246 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 247 #define NVREG_TXRXCTL_VLANINS   0x00080
 248         NvRegTxRingPhysAddrHigh = 0x148,
 249         NvRegRxRingPhysAddrHigh = 0x14C,
 250         NvRegTxPauseFrame = 0x170,
 251 #define NVREG_TX_PAUSEFRAME_DISABLE     0x0fff0080
 252 #define NVREG_TX_PAUSEFRAME_ENABLE_V1   0x01800010
 253 #define NVREG_TX_PAUSEFRAME_ENABLE_V2   0x056003f0
 254 #define NVREG_TX_PAUSEFRAME_ENABLE_V3   0x09f00880
 255         NvRegTxPauseFrameLimit = 0x174,
 256 #define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
 257         NvRegMIIStatus = 0x180,
 258 #define NVREG_MIISTAT_ERROR             0x0001
 259 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 260 #define NVREG_MIISTAT_MASK_RW           0x0007
 261 #define NVREG_MIISTAT_MASK_ALL          0x000f
 262         NvRegMIIMask = 0x184,
 263 #define NVREG_MII_LINKCHANGE            0x0008
 264
 265         NvRegAdapterControl = 0x188,
 266 #define NVREG_ADAPTCTL_START    0x02
 267 #define NVREG_ADAPTCTL_LINKUP   0x04
 268 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 269 #define NVREG_ADAPTCTL_RUNNING  0x100000
 270 #define NVREG_ADAPTCTL_PHYSHIFT 24
 271         NvRegMIISpeed = 0x18c,
 272 #define NVREG_MIISPEED_BIT8     (1<<8)
 273 #define NVREG_MIIDELAY  5
 274         NvRegMIIControl = 0x190,
 275 #define NVREG_MIICTL_INUSE      0x08000
 276 #define NVREG_MIICTL_WRITE      0x00400
 277 #define NVREG_MIICTL_ADDRSHIFT  5
 278         NvRegMIIData = 0x194,
 279         NvRegTxUnicast = 0x1a0,
 280         NvRegTxMulticast = 0x1a4,
 281         NvRegTxBroadcast = 0x1a8,
 282         NvRegWakeUpFlags = 0x200,
 283 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 284 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 285 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 286 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 287 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 288 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 289 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 290 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 291 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 292 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 293 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 294
 295         NvRegMgmtUnitGetVersion = 0x204,
 296 #define NVREG_MGMTUNITGETVERSION        0x01
 297         NvRegMgmtUnitVersion = 0x208,
 298 #define NVREG_MGMTUNITVERSION           0x08
 299         NvRegPowerCap = 0x268,
 300 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 301 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 302 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 303         NvRegPowerState = 0x26c,
 304 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 305 #define NVREG_POWERSTATE_VALID          0x0100
 306 #define NVREG_POWERSTATE_MASK           0x0003
 307 #define NVREG_POWERSTATE_D0             0x0000
 308 #define NVREG_POWERSTATE_D1             0x0001
 309 #define NVREG_POWERSTATE_D2             0x0002
 310 #define NVREG_POWERSTATE_D3             0x0003
 311         NvRegMgmtUnitControl = 0x278,
 312 #define NVREG_MGMTUNITCONTROL_INUSE     0x20000
 313         NvRegTxCnt = 0x280,
 314         NvRegTxZeroReXmt = 0x284,
 315         NvRegTxOneReXmt = 0x288,
 316         NvRegTxManyReXmt = 0x28c,
 317         NvRegTxLateCol = 0x290,
 318         NvRegTxUnderflow = 0x294,
 319         NvRegTxLossCarrier = 0x298,
 320         NvRegTxExcessDef = 0x29c,
 321         NvRegTxRetryErr = 0x2a0,
 322         NvRegRxFrameErr = 0x2a4,
 323         NvRegRxExtraByte = 0x2a8,
 324         NvRegRxLateCol = 0x2ac,
 325         NvRegRxRunt = 0x2b0,
 326         NvRegRxFrameTooLong = 0x2b4,
 327         NvRegRxOverflow = 0x2b8,
 328         NvRegRxFCSErr = 0x2bc,
 329         NvRegRxFrameAlignErr = 0x2c0,
 330         NvRegRxLenErr = 0x2c4,
 331         NvRegRxUnicast = 0x2c8,
 332         NvRegRxMulticast = 0x2cc,
 333         NvRegRxBroadcast = 0x2d0,
 334         NvRegTxDef = 0x2d4,
 335         NvRegTxFrame = 0x2d8,
 336         NvRegRxCnt = 0x2dc,
 337         NvRegTxPause = 0x2e0,
 338         NvRegRxPause = 0x2e4,
 339         NvRegRxDropFrame = 0x2e8,
 340         NvRegVlanControl = 0x300,
 341 #define NVREG_VLANCONTROL_ENABLE        0x2000
 342         NvRegMSIXMap0 = 0x3e0,
 343         NvRegMSIXMap1 = 0x3e4,
 344         NvRegMSIXIrqStatus = 0x3f0,
 345
 346         NvRegPowerState2 = 0x600,
 347 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F15
 348 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 349 #define NVREG_POWERSTATE2_PHY_RESET             0x0004
 350 #define NVREG_POWERSTATE2_GATE_CLOCKS           0x0F00
 351 };
 352
 353 /* Big endian: should work, but is untested */
 354 struct ring_desc {
 355         __le32 buf;
 356         __le32 flaglen;
 357 };
 358
 359 struct ring_desc_ex {
 360         __le32 bufhigh;
 361         __le32 buflow;
 362         __le32 txvlan;
 363         __le32 flaglen;
 364 };
 365
 366 union ring_type {
 367         struct ring_desc *orig;
 368         struct ring_desc_ex *ex;
 369 };
 370
 371 #define FLAG_MASK_V1 0xffff0000
 372 #define FLAG_MASK_V2 0xffffc000
 373 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 374 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 375
 376 #define NV_TX_LASTPACKET        (1<<16)
 377 #define NV_TX_RETRYERROR        (1<<19)
 378 #define NV_TX_RETRYCOUNT_MASK   (0xF<<20)
 379 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 380 #define NV_TX_DEFERRED          (1<<26)
 381 #define NV_TX_CARRIERLOST       (1<<27)
 382 #define NV_TX_LATECOLLISION     (1<<28)
 383 #define NV_TX_UNDERFLOW         (1<<29)
 384 #define NV_TX_ERROR             (1<<30)
 385 #define NV_TX_VALID             (1<<31)
 386
 387 #define NV_TX2_LASTPACKET       (1<<29)
 388 #define NV_TX2_RETRYERROR       (1<<18)
 389 #define NV_TX2_RETRYCOUNT_MASK  (0xF<<19)
 390 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 391 #define NV_TX2_DEFERRED         (1<<25)
 392 #define NV_TX2_CARRIERLOST      (1<<26)
 393 #define NV_TX2_LATECOLLISION    (1<<27)
 394 #define NV_TX2_UNDERFLOW        (1<<28)
 395 /* error and valid are the same for both */
 396 #define NV_TX2_ERROR            (1<<30)
 397 #define NV_TX2_VALID            (1<<31)
 398 #define NV_TX2_TSO              (1<<28)
 399 #define NV_TX2_TSO_SHIFT        14
 400 #define NV_TX2_TSO_MAX_SHIFT    14
 401 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 402 #define NV_TX2_CHECKSUM_L3      (1<<27)
 403 #define NV_TX2_CHECKSUM_L4      (1<<26)
 404
 405 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 406
 407 #define NV_RX_DESCRIPTORVALID   (1<<16)
 408 #define NV_RX_MISSEDFRAME       (1<<17)
 409 #define NV_RX_SUBSTRACT1        (1<<18)
 410 #define NV_RX_ERROR1            (1<<23)
 411 #define NV_RX_ERROR2            (1<<24)
 412 #define NV_RX_ERROR3            (1<<25)
 413 #define NV_RX_ERROR4            (1<<26)
 414 #define NV_RX_CRCERR            (1<<27)
 415 #define NV_RX_OVERFLOW          (1<<28)
 416 #define NV_RX_FRAMINGERR        (1<<29)
 417 #define NV_RX_ERROR             (1<<30)
 418 #define NV_RX_AVAIL             (1<<31)
 419 #define NV_RX_ERROR_MASK        (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
 420
 421 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 422 #define NV_RX2_CHECKSUM_IP      (0x10000000)
 423 #define NV_RX2_CHECKSUM_IP_TCP  (0x14000000)
 424 #define NV_RX2_CHECKSUM_IP_UDP  (0x18000000)
 425 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 426 #define NV_RX2_SUBSTRACT1       (1<<25)
 427 #define NV_RX2_ERROR1           (1<<18)
 428 #define NV_RX2_ERROR2           (1<<19)
 429 #define NV_RX2_ERROR3           (1<<20)
 430 #define NV_RX2_ERROR4           (1<<21)
 431 #define NV_RX2_CRCERR           (1<<22)
 432 #define NV_RX2_OVERFLOW         (1<<23)
 433 #define NV_RX2_FRAMINGERR       (1<<24)
 434 /* error and avail are the same for both */
 435 #define NV_RX2_ERROR            (1<<30)
 436 #define NV_RX2_AVAIL            (1<<31)
 437 #define NV_RX2_ERROR_MASK       (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
 438
 439 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 440 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 441
 442 /* Miscellaneous hardware related defines: */
 443 #define NV_PCI_REGSZ_VER1       0x270
 444 #define NV_PCI_REGSZ_VER2       0x2d4
 445 #define NV_PCI_REGSZ_VER3       0x604
 446 #define NV_PCI_REGSZ_MAX        0x604
 447
 448 /* various timeout delays: all in usec */
 449 #define NV_TXRX_RESET_DELAY     4
 450 #define NV_TXSTOP_DELAY1        10
 451 #define NV_TXSTOP_DELAY1MAX     500000
 452 #define NV_TXSTOP_DELAY2        100
 453 #define NV_RXSTOP_DELAY1        10
 454 #define NV_RXSTOP_DELAY1MAX     500000
 455 #define NV_RXSTOP_DELAY2        100
 456 #define NV_SETUP5_DELAY         5
 457 #define NV_SETUP5_DELAYMAX      50000
 458 #define NV_POWERUP_DELAY        5
 459 #define NV_POWERUP_DELAYMAX     5000
 460 #define NV_MIIBUSY_DELAY        50
 461 #define NV_MIIPHY_DELAY 10
 462 #define NV_MIIPHY_DELAYMAX      10000
 463 #define NV_MAC_RESET_DELAY      64
 464
 465 #define NV_WAKEUPPATTERNS       5
 466 #define NV_WAKEUPMASKENTRIES    4
 467
 468 /* General driver defaults */
 469 #define NV_WATCHDOG_TIMEO       (5*HZ)
 470
 471 #define RX_RING_DEFAULT         512
 472 #define TX_RING_DEFAULT         256
 473 #define RX_RING_MIN             128
 474 #define TX_RING_MIN             64
 475 #define RING_MAX_DESC_VER_1     1024
 476 #define RING_MAX_DESC_VER_2_3   16384
 477
 478 /* rx/tx mac addr + type + vlan + align + slack*/
 479 #define NV_RX_HEADERS           (64)
 480 /* even more slack. */
 481 #define NV_RX_ALLOC_PAD         (64)
 482
 483 /* maximum mtu size */
 484 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 485 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 486
 487 #define OOM_REFILL      (1+HZ/20)
 488 #define POLL_WAIT       (1+HZ/100)
 489 #define LINK_TIMEOUT    (3*HZ)
 490 #define STATS_INTERVAL  (10*HZ)
 491
 492 /*
 493  * desc_ver values:
 494  * The nic supports three different descriptor types:
 495  * - DESC_VER_1: Original
 496  * - DESC_VER_2: support for jumbo frames.
 497  * - DESC_VER_3: 64-bit format.
 498  */
 499 #define DESC_VER_1      1
 500 #define DESC_VER_2      2
 501 #define DESC_VER_3      3
 502
 503 /* PHY defines */
 504 #define PHY_OUI_MARVELL         0x5043
 505 #define PHY_OUI_CICADA          0x03f1
 506 #define PHY_OUI_VITESSE         0x01c1
 507 #define PHY_OUI_REALTEK         0x0732
 508 #define PHY_OUI_REALTEK2        0x0020
 509 #define PHYID1_OUI_MASK 0x03ff
 510 #define PHYID1_OUI_SHFT 6
 511 #define PHYID2_OUI_MASK 0xfc00
 512 #define PHYID2_OUI_SHFT 10
 513 #define PHYID2_MODEL_MASK               0x03f0
 514 #define PHY_MODEL_REALTEK_8211          0x0110
 515 #define PHY_REV_MASK                    0x0001
 516 #define PHY_REV_REALTEK_8211B           0x0000
 517 #define PHY_REV_REALTEK_8211C           0x0001
 518 #define PHY_MODEL_REALTEK_8201          0x0200
 519 #define PHY_MODEL_MARVELL_E3016         0x0220
 520 #define PHY_MARVELL_E3016_INITMASK      0x0300
 521 #define PHY_CICADA_INIT1        0x0f000
 522 #define PHY_CICADA_INIT2        0x0e00
 523 #define PHY_CICADA_INIT3        0x01000
 524 #define PHY_CICADA_INIT4        0x0200
 525 #define PHY_CICADA_INIT5        0x0004
 526 #define PHY_CICADA_INIT6        0x02000
 527 #define PHY_VITESSE_INIT_REG1   0x1f
 528 #define PHY_VITESSE_INIT_REG2   0x10
 529 #define PHY_VITESSE_INIT_REG3   0x11
 530 #define PHY_VITESSE_INIT_REG4   0x12
 531 #define PHY_VITESSE_INIT_MSK1   0xc
 532 #define PHY_VITESSE_INIT_MSK2   0x0180
 533 #define PHY_VITESSE_INIT1       0x52b5
 534 #define PHY_VITESSE_INIT2       0xaf8a
 535 #define PHY_VITESSE_INIT3       0x8
 536 #define PHY_VITESSE_INIT4       0x8f8a
 537 #define PHY_VITESSE_INIT5       0xaf86
 538 #define PHY_VITESSE_INIT6       0x8f86
 539 #define PHY_VITESSE_INIT7       0xaf82
 540 #define PHY_VITESSE_INIT8       0x0100
 541 #define PHY_VITESSE_INIT9       0x8f82
 542 #define PHY_VITESSE_INIT10      0x0
 543 #define PHY_REALTEK_INIT_REG1   0x1f
 544 #define PHY_REALTEK_INIT_REG2   0x19
 545 #define PHY_REALTEK_INIT_REG3   0x13
 546 #define PHY_REALTEK_INIT_REG4   0x14
 547 #define PHY_REALTEK_INIT_REG5   0x18
 548 #define PHY_REALTEK_INIT_REG6   0x11
 549 #define PHY_REALTEK_INIT_REG7   0x01
 550 #define PHY_REALTEK_INIT1       0x0000
 551 #define PHY_REALTEK_INIT2       0x8e00
 552 #define PHY_REALTEK_INIT3       0x0001
 553 #define PHY_REALTEK_INIT4       0xad17
 554 #define PHY_REALTEK_INIT5       0xfb54
 555 #define PHY_REALTEK_INIT6       0xf5c7
 556 #define PHY_REALTEK_INIT7       0x1000
 557 #define PHY_REALTEK_INIT8       0x0003
 558 #define PHY_REALTEK_INIT9       0x0008
 559 #define PHY_REALTEK_INIT10      0x0005
 560 #define PHY_REALTEK_INIT11      0x0200
 561 #define PHY_REALTEK_INIT_MSK1   0x0003
 562
 563 #define PHY_GIGABIT     0x0100
 564
 565 #define PHY_TIMEOUT     0x1
 566 #define PHY_ERROR       0x2
 567
 568 #define PHY_100 0x1
 569 #define PHY_1000        0x2
 570 #define PHY_HALF        0x100
 571
 572 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 573 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 574 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 575 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 576 #define NV_PAUSEFRAME_RX_REQ     0x0010
 577 #define NV_PAUSEFRAME_TX_REQ     0x0020
 578 #define NV_PAUSEFRAME_AUTONEG    0x0040
 579
 580 /* MSI/MSI-X defines */
 581 #define NV_MSI_X_MAX_VECTORS  8
 582 #define NV_MSI_X_VECTORS_MASK 0x000f
 583 #define NV_MSI_CAPABLE        0x0010
 584 #define NV_MSI_X_CAPABLE      0x0020
 585 #define NV_MSI_ENABLED        0x0040
 586 #define NV_MSI_X_ENABLED      0x0080
 587
 588 #define NV_MSI_X_VECTOR_ALL   0x0
 589 #define NV_MSI_X_VECTOR_RX    0x0
 590 #define NV_MSI_X_VECTOR_TX    0x1
 591 #define NV_MSI_X_VECTOR_OTHER 0x2
 592
 593 #define NV_MSI_PRIV_OFFSET 0x68
 594 #define NV_MSI_PRIV_VALUE  0xffffffff
 595
 596 #define NV_RESTART_TX         0x1
 597 #define NV_RESTART_RX         0x2
 598
 599 #define NV_TX_LIMIT_COUNT     16
 600
 601 #define NV_DYNAMIC_THRESHOLD        4
 602 #define NV_DYNAMIC_MAX_QUIET_COUNT  2048
 603
 604 /* statistics */
 605 struct nv_ethtool_str {
 606         char name[ETH_GSTRING_LEN];
 607 };
 608
 609 static const struct nv_ethtool_str nv_estats_str[] = {
 610         { "tx_bytes" }, /* includes Ethernet FCS CRC */
 611         { "tx_zero_rexmt" },
 612         { "tx_one_rexmt" },
 613         { "tx_many_rexmt" },
 614         { "tx_late_collision" },
 615         { "tx_fifo_errors" },
 616         { "tx_carrier_errors" },
 617         { "tx_excess_deferral" },
 618         { "tx_retry_error" },
 619         { "rx_frame_error" },
 620         { "rx_extra_byte" },
 621         { "rx_late_collision" },
 622         { "rx_runt" },
 623         { "rx_frame_too_long" },
 624         { "rx_over_errors" },
 625         { "rx_crc_errors" },
 626         { "rx_frame_align_error" },
 627         { "rx_length_error" },
 628         { "rx_unicast" },
 629         { "rx_multicast" },
 630         { "rx_broadcast" },
 631         { "rx_packets" },
 632         { "rx_errors_total" },
 633         { "tx_errors_total" },
 634
 635         /* version 2 stats */
 636         { "tx_deferral" },
 637         { "tx_packets" },
 638         { "rx_bytes" }, /* includes Ethernet FCS CRC */
 639         { "tx_pause" },
 640         { "rx_pause" },
 641         { "rx_drop_frame" },
 642
 643         /* version 3 stats */
 644         { "tx_unicast" },
 645         { "tx_multicast" },
 646         { "tx_broadcast" }
 647 };
 648
 649 struct nv_ethtool_stats {
 650         u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
 651         u64 tx_zero_rexmt;
 652         u64 tx_one_rexmt;
 653         u64 tx_many_rexmt;
 654         u64 tx_late_collision;
 655         u64 tx_fifo_errors;
 656         u64 tx_carrier_errors;
 657         u64 tx_excess_deferral;
 658         u64 tx_retry_error;
 659         u64 rx_frame_error;
 660         u64 rx_extra_byte;
 661         u64 rx_late_collision;
 662         u64 rx_runt;
 663         u64 rx_frame_too_long;
 664         u64 rx_over_errors;
 665         u64 rx_crc_errors;
 666         u64 rx_frame_align_error;
 667         u64 rx_length_error;
 668         u64 rx_unicast;
 669         u64 rx_multicast;
 670         u64 rx_broadcast;
 671         u64 rx_packets; /* should be ifconfig->rx_packets */
 672         u64 rx_errors_total;
 673         u64 tx_errors_total;
 674
 675         /* version 2 stats */
 676         u64 tx_deferral;
 677         u64 tx_packets; /* should be ifconfig->tx_packets */
 678         u64 rx_bytes;   /* should be ifconfig->rx_bytes + 4*rx_packets */
 679         u64 tx_pause;
 680         u64 rx_pause;
 681         u64 rx_drop_frame;
 682
 683         /* version 3 stats */
 684         u64 tx_unicast;
 685         u64 tx_multicast;
 686         u64 tx_broadcast;
 687 };
 688
 689 #define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
 690 #define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
 691 #define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
 692
 693 /* diagnostics */
 694 #define NV_TEST_COUNT_BASE 3
 695 #define NV_TEST_COUNT_EXTENDED 4
 696
 697 static const struct nv_ethtool_str nv_etests_str[] = {
 698         { "link      (online/offline)" },
 699         { "register  (offline)       " },
 700         { "interrupt (offline)       " },
 701         { "loopback  (offline)       " }
 702 };
 703
 704 struct register_test {
 705         __u32 reg;
 706         __u32 mask;
 707 };
 708
 709 static const struct register_test nv_registers_test[] = {
 710         { NvRegUnknownSetupReg6, 0x01 },
 711         { NvRegMisc1, 0x03c },
 712         { NvRegOffloadConfig, 0x03ff },
 713         { NvRegMulticastAddrA, 0xffffffff },
 714         { NvRegTxWatermark, 0x0ff },
 715         { NvRegWakeUpFlags, 0x07777 },
 716         { 0, 0 }
 717 };
 718
 719 struct nv_skb_map {
 720         struct sk_buff *skb;
 721         dma_addr_t dma;
 722         unsigned int dma_len:31;
 723         unsigned int dma_single:1;
 724         struct ring_desc_ex *first_tx_desc;
 725         struct nv_skb_map *next_tx_ctx;
 726 };
 727
 728 /*
 729  * SMP locking:
 730  * All hardware access under netdev_priv(dev)->lock, except the performance
 731  * critical parts:
 732  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 733  *      by the arch code for interrupts.
 734  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 735  *      needs netdev_priv(dev)->lock :-(
 736  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 737  *
 738  * Hardware stats updates are protected by hwstats_lock:
 739  * - updated by nv_do_stats_poll (timer). This is meant to avoid
 740  *   integer wraparound in the NIC stats registers, at low frequency
 741  *   (0.1 Hz)
 742  * - updated by nv_get_ethtool_stats + nv_get_stats64
 743  *
 744  * Software stats are accessed only through 64b synchronization points
 745  * and are not subject to other synchronization techniques (single
 746  * update thread on the TX or RX paths).
 747  */
 748
 749 /* in dev: base, irq */
 750 struct fe_priv {
 751         spinlock_t lock;
 752
 753         struct net_device *dev;
 754         struct napi_struct napi;
 755
 756         /* hardware stats are updated in syscall and timer */
 757         spinlock_t hwstats_lock;
 758         struct nv_ethtool_stats estats;
 759
 760         int in_shutdown;
 761         u32 linkspeed;
 762         int duplex;
 763         int autoneg;
 764         int fixed_mode;
 765         int phyaddr;
 766         int wolenabled;
 767         unsigned int phy_oui;
 768         unsigned int phy_model;
 769         unsigned int phy_rev;
 770         u16 gigabit;
 771         int intr_test;
 772         int recover_error;
 773         int quiet_count;
 774
 775         /* General data: RO fields */
 776         dma_addr_t ring_addr;
 777         struct pci_dev *pci_dev;
 778         u32 orig_mac[2];
 779         u32 events;
 780         u32 irqmask;
 781         u32 desc_ver;
 782         u32 txrxctl_bits;
 783         u32 vlanctl_bits;
 784         u32 driver_data;
 785         u32 device_id;
 786         u32 register_size;
 787         u32 mac_in_use;
 788         int mgmt_version;
 789         int mgmt_sema;
 790
 791         void __iomem *base;
 792
 793         /* rx specific fields.
 794          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 795          */
 796         union ring_type get_rx, put_rx, first_rx, last_rx;
 797         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 798         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 799         struct nv_skb_map *rx_skb;
 800
 801         union ring_type rx_ring;
 802         unsigned int rx_buf_sz;
 803         unsigned int pkt_limit;
 804         struct timer_list oom_kick;
 805         struct timer_list nic_poll;
 806         struct timer_list stats_poll;
 807         u32 nic_poll_irq;
 808         int rx_ring_size;
 809
 810         /* RX software stats */
 811         struct u64_stats_sync swstats_rx_syncp;
 812         u64 stat_rx_packets;
 813         u64 stat_rx_bytes; /* not always available in HW */
 814         u64 stat_rx_missed_errors;
 815         u64 stat_rx_dropped;
 816
 817         /* media detection workaround.
 818          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 819          */
 820         int need_linktimer;
 821         unsigned long link_timeout;
 822         /*
 823          * tx specific fields.
 824          */
 825         union ring_type get_tx, put_tx, first_tx, last_tx;
 826         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 827         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 828         struct nv_skb_map *tx_skb;
 829
 830         union ring_type tx_ring;
 831         u32 tx_flags;
 832         int tx_ring_size;
 833         int tx_limit;
 834         u32 tx_pkts_in_progress;
 835         struct nv_skb_map *tx_change_owner;
 836         struct nv_skb_map *tx_end_flip;
 837         int tx_stop;
 838
 839         /* TX software stats */
 840         struct u64_stats_sync swstats_tx_syncp;
 841         u64 stat_tx_packets; /* not always available in HW */
 842         u64 stat_tx_bytes;
 843         u64 stat_tx_dropped;
 844
 845         /* msi/msi-x fields */
 846         u32 msi_flags;
 847         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 848
 849         /* flow control */
 850         u32 pause_flags;
 851
 852         /* power saved state */
 853         u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
 854
 855         /* for different msi-x irq type */
 856         char name_rx[IFNAMSIZ + 3];       /* -rx    */
 857         char name_tx[IFNAMSIZ + 3];       /* -tx    */
 858         char name_other[IFNAMSIZ + 6];    /* -other */
 859 };
 860
 861 /*
 862  * Maximum number of loops until we assume that a bit in the irq mask
 863  * is stuck. Overridable with module param.
 864  */
 865 static int max_interrupt_work = 4;
 866
 867 /*
 868  * Optimization can be either throuput mode or cpu mode
 869  *
 870  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 871  * CPU Mode: Interrupts are controlled by a timer.
 872  */
 873 enum {
 874         NV_OPTIMIZATION_MODE_THROUGHPUT,
 875         NV_OPTIMIZATION_MODE_CPU,
 876         NV_OPTIMIZATION_MODE_DYNAMIC
 877 };
 878 static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
 879
 880 /*
 881  * Poll interval for timer irq
 882  *
 883  * This interval determines how frequent an interrupt is generated.
 884  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 885  * Min = 0, and Max = 65535
 886  */
 887 static int poll_interval = -1;
 888
 889 /*
 890  * MSI interrupts
 891  */
 892 enum {
 893         NV_MSI_INT_DISABLED,
 894         NV_MSI_INT_ENABLED
 895 };
 896 static int msi = NV_MSI_INT_ENABLED;
 897
 898 /*
 899  * MSIX interrupts
 900  */
 901 enum {
 902         NV_MSIX_INT_DISABLED,
 903         NV_MSIX_INT_ENABLED
 904 };
 905 static int msix = NV_MSIX_INT_ENABLED;
 906
 907 /*
 908  * DMA 64bit
 909  */
 910 enum {
 911         NV_DMA_64BIT_DISABLED,
 912         NV_DMA_64BIT_ENABLED
 913 };
 914 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 915
 916 /*
 917  * Debug output control for tx_timeout
 918  */
 919 static bool debug_tx_timeout = false;
 920
 921 /*
 922  * Crossover Detection
 923  * Realtek 8201 phy + some OEM boards do not work properly.
 924  */
 925 enum {
 926         NV_CROSSOVER_DETECTION_DISABLED,
 927         NV_CROSSOVER_DETECTION_ENABLED
 928 };
 929 static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
 930
 931 /*
 932  * Power down phy when interface is down (persists through reboot;
 933  * older Linux and other OSes may not power it up again)
 934  */
 935 static int phy_power_down;
 936
 937 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 938 {
 939         return netdev_priv(dev);
 940 }
 941
 942 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 943 {
 944         return ((struct fe_priv *)netdev_priv(dev))->base;
 945 }
 946
 947 static inline void pci_push(u8 __iomem *base)
 948 {
 949         /* force out pending posted writes */
 950         readl(base);
 951 }
 952
 953 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 954 {
 955         return le32_to_cpu(prd->flaglen)
 956                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 957 }
 958
 959 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 960 {
 961         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 962 }
 963
 964 static bool nv_optimized(struct fe_priv *np)
 965 {
 966         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 967                 return false;
 968         return true;
 969 }
 970
 971 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 972                      int delay, int delaymax)
 973 {
 974         u8 __iomem *base = get_hwbase(dev);
 975
 976         pci_push(base);
 977         do {
 978                 udelay(delay);
 979                 delaymax -= delay;
 980                 if (delaymax < 0)
 981                         return 1;
 982         } while ((readl(base + offset) & mask) != target);
 983         return 0;
 984 }
 985
 986 #define NV_SETUP_RX_RING 0x01
 987 #define NV_SETUP_TX_RING 0x02
 988
 989 static inline u32 dma_low(dma_addr_t addr)
 990 {
 991         return addr;
 992 }
 993
 994 static inline u32 dma_high(dma_addr_t addr)
 995 {
 996         return addr>>31>>1;     /* 0 if 32bit, shift down by 32 if 64bit */
 997 }
 998
 999 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
1000 {
1001         struct fe_priv *np = get_nvpriv(dev);
1002         u8 __iomem *base = get_hwbase(dev);
1003
1004         if (!nv_optimized(np)) {
1005                 if (rxtx_flags & NV_SETUP_RX_RING)
1006                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1007                 if (rxtx_flags & NV_SETUP_TX_RING)
1008                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1009         } else {
1010                 if (rxtx_flags & NV_SETUP_RX_RING) {
1011                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1012                         writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
1013                 }
1014                 if (rxtx_flags & NV_SETUP_TX_RING) {
1015                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1016                         writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
1017                 }
1018         }
1019 }
1020
1021 static void free_rings(struct net_device *dev)
1022 {
1023         struct fe_priv *np = get_nvpriv(dev);
1024
1025         if (!nv_optimized(np)) {
1026                 if (np->rx_ring.orig)
1027                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
1028                                             np->rx_ring.orig, np->ring_addr);
1029         } else {
1030                 if (np->rx_ring.ex)
1031                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
1032                                             np->rx_ring.ex, np->ring_addr);
1033         }
1034         kfree(np->rx_skb);
1035         kfree(np->tx_skb);
1036 }
1037
1038 static int using_multi_irqs(struct net_device *dev)
1039 {
1040         struct fe_priv *np = get_nvpriv(dev);
1041
1042         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1043             ((np->msi_flags & NV_MSI_X_ENABLED) &&
1044              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
1045                 return 0;
1046         else
1047                 return 1;
1048 }
1049
1050 static void nv_txrx_gate(struct net_device *dev, bool gate)
1051 {
1052         struct fe_priv *np = get_nvpriv(dev);
1053         u8 __iomem *base = get_hwbase(dev);
1054         u32 powerstate;
1055
1056         if (!np->mac_in_use &&
1057             (np->driver_data & DEV_HAS_POWER_CNTRL)) {
1058                 powerstate = readl(base + NvRegPowerState2);
1059                 if (gate)
1060                         powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
1061                 else
1062                         powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
1063                 writel(powerstate, base + NvRegPowerState2);
1064         }
1065 }
1066
1067 static void nv_enable_irq(struct net_device *dev)
1068 {
1069         struct fe_priv *np = get_nvpriv(dev);
1070
1071         if (!using_multi_irqs(dev)) {
1072                 if (np->msi_flags & NV_MSI_X_ENABLED)
1073                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1074                 else
1075                         enable_irq(np->pci_dev->irq);
1076         } else {
1077                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1078                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1079                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1080         }
1081 }
1082
1083 static void nv_disable_irq(struct net_device *dev)
1084 {
1085         struct fe_priv *np = get_nvpriv(dev);
1086
1087         if (!using_multi_irqs(dev)) {
1088                 if (np->msi_flags & NV_MSI_X_ENABLED)
1089                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1090                 else
1091                         disable_irq(np->pci_dev->irq);
1092         } else {
1093                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1094                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1095                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1096         }
1097 }
1098
1099 /* In MSIX mode, a write to irqmask behaves as XOR */
1100 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1101 {
1102         u8 __iomem *base = get_hwbase(dev);
1103
1104         writel(mask, base + NvRegIrqMask);
1105 }
1106
1107 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1108 {
1109         struct fe_priv *np = get_nvpriv(dev);
1110         u8 __iomem *base = get_hwbase(dev);
1111
1112         if (np->msi_flags & NV_MSI_X_ENABLED) {
1113                 writel(mask, base + NvRegIrqMask);
1114         } else {
1115                 if (np->msi_flags & NV_MSI_ENABLED)
1116                         writel(0, base + NvRegMSIIrqMask);
1117                 writel(0, base + NvRegIrqMask);
1118         }
1119 }
1120
1121 static void nv_napi_enable(struct net_device *dev)
1122 {
1123         struct fe_priv *np = get_nvpriv(dev);
1124
1125         napi_enable(&np->napi);
1126 }
1127
1128 static void nv_napi_disable(struct net_device *dev)
1129 {
1130         struct fe_priv *np = get_nvpriv(dev);
1131
1132         napi_disable(&np->napi);
1133 }
1134
1135 #define MII_READ        (-1)
1136 /* mii_rw: read/write a register on the PHY.
1137  *
1138  * Caller must guarantee serialization
1139  */
1140 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1141 {
1142         u8 __iomem *base = get_hwbase(dev);
1143         u32 reg;
1144         int retval;
1145
1146         writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1147
1148         reg = readl(base + NvRegMIIControl);
1149         if (reg & NVREG_MIICTL_INUSE) {
1150                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1151                 udelay(NV_MIIBUSY_DELAY);
1152         }
1153
1154         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1155         if (value != MII_READ) {
1156                 writel(value, base + NvRegMIIData);
1157                 reg |= NVREG_MIICTL_WRITE;
1158         }
1159         writel(reg, base + NvRegMIIControl);
1160
1161         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1162                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
1163                 retval = -1;
1164         } else if (value != MII_READ) {
1165                 /* it was a write operation - fewer failures are detectable */
1166                 retval = 0;
1167         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1168                 retval = -1;
1169         } else {
1170                 retval = readl(base + NvRegMIIData);
1171         }
1172
1173         return retval;
1174 }
1175
1176 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1177 {
1178         struct fe_priv *np = netdev_priv(dev);
1179         u32 miicontrol;
1180         unsigned int tries = 0;
1181
1182         miicontrol = BMCR_RESET | bmcr_setup;
1183         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
1184                 return -1;
1185
1186         /* wait for 500ms */
1187         msleep(500);
1188
1189         /* must wait till reset is deasserted */
1190         while (miicontrol & BMCR_RESET) {
1191                 usleep_range(10000, 20000);
1192                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1193                 /* FIXME: 100 tries seem excessive */
1194                 if (tries++ > 100)
1195                         return -1;
1196         }
1197         return 0;
1198 }
1199
1200 static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
1201 {
1202         static const struct {
1203                 int reg;
1204                 int init;
1205         } ri[] = {
1206                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1207                 { PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
1208                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
1209                 { PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
1210                 { PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
1211                 { PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
1212                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1213         };
1214         int i;
1215
1216         for (i = 0; i < ARRAY_SIZE(ri); i++) {
1217                 if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
1218                         return PHY_ERROR;
1219         }
1220
1221         return 0;
1222 }
1223
1224 static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
1225 {
1226         u32 reg;
1227         u8 __iomem *base = get_hwbase(dev);
1228         u32 powerstate = readl(base + NvRegPowerState2);
1229
1230         /* need to perform hw phy reset */
1231         powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1232         writel(powerstate, base + NvRegPowerState2);
1233         msleep(25);
1234
1235         powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1236         writel(powerstate, base + NvRegPowerState2);
1237         msleep(25);
1238
1239         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1240         reg |= PHY_REALTEK_INIT9;
1241         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
1242                 return PHY_ERROR;
1243         if (mii_rw(dev, np->phyaddr,
1244                    PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
1245                 return PHY_ERROR;
1246         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1247         if (!(reg & PHY_REALTEK_INIT11)) {
1248                 reg |= PHY_REALTEK_INIT11;
1249                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
1250                         return PHY_ERROR;
1251         }
1252         if (mii_rw(dev, np->phyaddr,
1253                    PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1254                 return PHY_ERROR;
1255
1256         return 0;
1257 }
1258
1259 static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
1260 {
1261         u32 phy_reserved;
1262
1263         if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
1264                 phy_reserved = mii_rw(dev, np->phyaddr,
1265                                       PHY_REALTEK_INIT_REG6, MII_READ);
1266                 phy_reserved |= PHY_REALTEK_INIT7;
1267                 if (mii_rw(dev, np->phyaddr,
1268                            PHY_REALTEK_INIT_REG6, phy_reserved))
1269                         return PHY_ERROR;
1270         }
1271
1272         return 0;
1273 }
1274
1275 static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
1276 {
1277         u32 phy_reserved;
1278
1279         if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1280                 if (mii_rw(dev, np->phyaddr,
1281                            PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
1282                         return PHY_ERROR;
1283                 phy_reserved = mii_rw(dev, np->phyaddr,
1284                                       PHY_REALTEK_INIT_REG2, MII_READ);
1285                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1286                 phy_reserved |= PHY_REALTEK_INIT3;
1287                 if (mii_rw(dev, np->phyaddr,
1288                            PHY_REALTEK_INIT_REG2, phy_reserved))
1289                         return PHY_ERROR;
1290                 if (mii_rw(dev, np->phyaddr,
1291                            PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1292                         return PHY_ERROR;
1293         }
1294
1295         return 0;
1296 }
1297
1298 static int init_cicada(struct net_device *dev, struct fe_priv *np,
1299                        u32 phyinterface)
1300 {
1301         u32 phy_reserved;
1302
1303         if (phyinterface & PHY_RGMII) {
1304                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1305                 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1306                 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1307                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
1308                         return PHY_ERROR;
1309                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1310                 phy_reserved |= PHY_CICADA_INIT5;
1311                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
1312                         return PHY_ERROR;
1313         }
1314         phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1315         phy_reserved |= PHY_CICADA_INIT6;
1316         if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
1317                 return PHY_ERROR;
1318
1319         return 0;
1320 }
1321
1322 static int init_vitesse(struct net_device *dev, struct fe_priv *np)
1323 {
1324         u32 phy_reserved;
1325
1326         if (mii_rw(dev, np->phyaddr,
1327                    PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
1328                 return PHY_ERROR;
1329         if (mii_rw(dev, np->phyaddr,
1330                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
1331                 return PHY_ERROR;
1332         phy_reserved = mii_rw(dev, np->phyaddr,
1333                               PHY_VITESSE_INIT_REG4, MII_READ);
1334         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1335                 return PHY_ERROR;
1336         phy_reserved = mii_rw(dev, np->phyaddr,
1337                               PHY_VITESSE_INIT_REG3, MII_READ);
1338         phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1339         phy_reserved |= PHY_VITESSE_INIT3;
1340         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1341                 return PHY_ERROR;
1342         if (mii_rw(dev, np->phyaddr,
1343                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
1344                 return PHY_ERROR;
1345         if (mii_rw(dev, np->phyaddr,
1346                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
1347                 return PHY_ERROR;
1348         phy_reserved = mii_rw(dev, np->phyaddr,
1349                               PHY_VITESSE_INIT_REG4, MII_READ);
1350         phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1351         phy_reserved |= PHY_VITESSE_INIT3;
1352         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1353                 return PHY_ERROR;
1354         phy_reserved = mii_rw(dev, np->phyaddr,
1355                               PHY_VITESSE_INIT_REG3, MII_READ);
1356         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1357                 return PHY_ERROR;
1358         if (mii_rw(dev, np->phyaddr,
1359                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
1360                 return PHY_ERROR;
1361         if (mii_rw(dev, np->phyaddr,
1362                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
1363                 return PHY_ERROR;
1364         phy_reserved = mii_rw(dev, np->phyaddr,
1365                               PHY_VITESSE_INIT_REG4, MII_READ);
1366         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1367                 return PHY_ERROR;
1368         phy_reserved = mii_rw(dev, np->phyaddr,
1369                               PHY_VITESSE_INIT_REG3, MII_READ);
1370         phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1371         phy_reserved |= PHY_VITESSE_INIT8;
1372         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1373                 return PHY_ERROR;
1374         if (mii_rw(dev, np->phyaddr,
1375                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
1376                 return PHY_ERROR;
1377         if (mii_rw(dev, np->phyaddr,
1378                    PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
1379                 return PHY_ERROR;
1380
1381         return 0;
1382 }
1383
1384 static int phy_init(struct net_device *dev)
1385 {
1386         struct fe_priv *np = get_nvpriv(dev);
1387         u8 __iomem *base = get_hwbase(dev);
1388         u32 phyinterface;
1389         u32 mii_status, mii_control, mii_control_1000, reg;
1390
1391         /* phy errata for E3016 phy */
1392         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1393                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1394                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1395                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1396                         netdev_info(dev, "%s: phy write to errata reg failed\n",
1397                                     pci_name(np->pci_dev));
1398                         return PHY_ERROR;
1399                 }
1400         }
1401         if (np->phy_oui == PHY_OUI_REALTEK) {
1402                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1403                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1404                         if (init_realtek_8211b(dev, np)) {
1405                                 netdev_info(dev, "%s: phy init failed\n",
1406                                             pci_name(np->pci_dev));
1407                                 return PHY_ERROR;
1408                         }
1409                 } else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1410                            np->phy_rev == PHY_REV_REALTEK_8211C) {
1411                         if (init_realtek_8211c(dev, np)) {
1412                                 netdev_info(dev, "%s: phy init failed\n",
1413                                             pci_name(np->pci_dev));
1414                                 return PHY_ERROR;
1415                         }
1416                 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1417                         if (init_realtek_8201(dev, np)) {
1418                                 netdev_info(dev, "%s: phy init failed\n",
1419                                             pci_name(np->pci_dev));
1420                                 return PHY_ERROR;
1421                         }
1422                 }
1423         }
1424
1425         /* set advertise register */
1426         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1427         reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
1428                 ADVERTISE_100HALF | ADVERTISE_100FULL |
1429                 ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
1430         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1431                 netdev_info(dev, "%s: phy write to advertise failed\n",
1432                             pci_name(np->pci_dev));
1433                 return PHY_ERROR;
1434         }
1435
1436         /* get phy interface type */
1437         phyinterface = readl(base + NvRegPhyInterface);
1438
1439         /* see if gigabit phy */
1440         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1441         if (mii_status & PHY_GIGABIT) {
1442                 np->gigabit = PHY_GIGABIT;
1443                 mii_control_1000 = mii_rw(dev, np->phyaddr,
1444                                           MII_CTRL1000, MII_READ);
1445                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1446                 if (phyinterface & PHY_RGMII)
1447                         mii_control_1000 |= ADVERTISE_1000FULL;
1448                 else
1449                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1450
1451                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1452                         netdev_info(dev, "%s: phy init failed\n",
1453                                     pci_name(np->pci_dev));
1454                         return PHY_ERROR;
1455                 }
1456         } else
1457                 np->gigabit = 0;
1458
1459         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1460         mii_control |= BMCR_ANENABLE;
1461
1462         if (np->phy_oui == PHY_OUI_REALTEK &&
1463             np->phy_model == PHY_MODEL_REALTEK_8211 &&
1464             np->phy_rev == PHY_REV_REALTEK_8211C) {
1465                 /* start autoneg since we already performed hw reset above */
1466                 mii_control |= BMCR_ANRESTART;
1467                 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1468                         netdev_info(dev, "%s: phy init failed\n",
1469                                     pci_name(np->pci_dev));
1470                         return PHY_ERROR;
1471                 }
1472         } else {
1473                 /* reset the phy
1474                  * (certain phys need bmcr to be setup with reset)
1475                  */
1476                 if (phy_reset(dev, mii_control)) {
1477                         netdev_info(dev, "%s: phy reset failed\n",
1478                                     pci_name(np->pci_dev));
1479                         return PHY_ERROR;
1480                 }
1481         }
1482
1483         /* phy vendor specific configuration */
1484         if ((np->phy_oui == PHY_OUI_CICADA)) {
1485                 if (init_cicada(dev, np, phyinterface)) {
1486                         netdev_info(dev, "%s: phy init failed\n",
1487                                     pci_name(np->pci_dev));
1488                         return PHY_ERROR;
1489                 }
1490         } else if (np->phy_oui == PHY_OUI_VITESSE) {
1491                 if (init_vitesse(dev, np)) {
1492                         netdev_info(dev, "%s: phy init failed\n",
1493                                     pci_name(np->pci_dev));
1494                         return PHY_ERROR;
1495                 }
1496         } else if (np->phy_oui == PHY_OUI_REALTEK) {
1497                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1498                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1499                         /* reset could have cleared these out, set them back */
1500                         if (init_realtek_8211b(dev, np)) {
1501                                 netdev_info(dev, "%s: phy init failed\n",
1502                                             pci_name(np->pci_dev));
1503                                 return PHY_ERROR;
1504                         }
1505                 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1506                         if (init_realtek_8201(dev, np) ||
1507                             init_realtek_8201_cross(dev, np)) {
1508                                 netdev_info(dev, "%s: phy init failed\n",
1509                                             pci_name(np->pci_dev));
1510                                 return PHY_ERROR;
1511                         }
1512                 }
1513         }
1514
1515         /* some phys clear out pause advertisement on reset, set it back */
1516         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1517
1518         /* restart auto negotiation, power down phy */
1519         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1520         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1521         if (phy_power_down)
1522                 mii_control |= BMCR_PDOWN;
1523         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
1524                 return PHY_ERROR;
1525
1526         return 0;
1527 }
1528
1529 static void nv_start_rx(struct net_device *dev)
1530 {
1531         struct fe_priv *np = netdev_priv(dev);
1532         u8 __iomem *base = get_hwbase(dev);
1533         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1534
1535         /* Already running? Stop it. */
1536         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1537                 rx_ctrl &= ~NVREG_RCVCTL_START;
1538                 writel(rx_ctrl, base + NvRegReceiverControl);
1539                 pci_push(base);
1540         }
1541         writel(np->linkspeed, base + NvRegLinkSpeed);
1542         pci_push(base);
1543         rx_ctrl |= NVREG_RCVCTL_START;
1544         if (np->mac_in_use)
1545                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1546         writel(rx_ctrl, base + NvRegReceiverControl);
1547         pci_push(base);
1548 }
1549
1550 static void nv_stop_rx(struct net_device *dev)
1551 {
1552         struct fe_priv *np = netdev_priv(dev);
1553         u8 __iomem *base = get_hwbase(dev);
1554         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1555
1556         if (!np->mac_in_use)
1557                 rx_ctrl &= ~NVREG_RCVCTL_START;
1558         else
1559                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1560         writel(rx_ctrl, base + NvRegReceiverControl);
1561         if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1562                       NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
1563                 netdev_info(dev, "%s: ReceiverStatus remained busy\n",
1564                             __func__);
1565
1566         udelay(NV_RXSTOP_DELAY2);
1567         if (!np->mac_in_use)
1568                 writel(0, base + NvRegLinkSpeed);
1569 }
1570
1571 static void nv_start_tx(struct net_device *dev)
1572 {
1573         struct fe_priv *np = netdev_priv(dev);
1574         u8 __iomem *base = get_hwbase(dev);
1575         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1576
1577         tx_ctrl |= NVREG_XMITCTL_START;
1578         if (np->mac_in_use)
1579                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1580         writel(tx_ctrl, base + NvRegTransmitterControl);
1581         pci_push(base);
1582 }
1583
1584 static void nv_stop_tx(struct net_device *dev)
1585 {
1586         struct fe_priv *np = netdev_priv(dev);
1587         u8 __iomem *base = get_hwbase(dev);
1588         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1589
1590         if (!np->mac_in_use)
1591                 tx_ctrl &= ~NVREG_XMITCTL_START;
1592         else
1593                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1594         writel(tx_ctrl, base + NvRegTransmitterControl);
1595         if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1596                       NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
1597                 netdev_info(dev, "%s: TransmitterStatus remained busy\n",
1598                             __func__);
1599
1600         udelay(NV_TXSTOP_DELAY2);
1601         if (!np->mac_in_use)
1602                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1603                        base + NvRegTransmitPoll);
1604 }
1605
1606 static void nv_start_rxtx(struct net_device *dev)
1607 {
1608         nv_start_rx(dev);
1609         nv_start_tx(dev);
1610 }
1611
1612 static void nv_stop_rxtx(struct net_device *dev)
1613 {
1614         nv_stop_rx(dev);
1615         nv_stop_tx(dev);
1616 }
1617
1618 static void nv_txrx_reset(struct net_device *dev)
1619 {
1620         struct fe_priv *np = netdev_priv(dev);
1621         u8 __iomem *base = get_hwbase(dev);
1622
1623         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1624         pci_push(base);
1625         udelay(NV_TXRX_RESET_DELAY);
1626         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1627         pci_push(base);
1628 }
1629
1630 static void nv_mac_reset(struct net_device *dev)
1631 {
1632         struct fe_priv *np = netdev_priv(dev);
1633         u8 __iomem *base = get_hwbase(dev);
1634         u32 temp1, temp2, temp3;
1635
1636         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1637         pci_push(base);
1638
1639         /* save registers since they will be cleared on reset */
1640         temp1 = readl(base + NvRegMacAddrA);
1641         temp2 = readl(base + NvRegMacAddrB);
1642         temp3 = readl(base + NvRegTransmitPoll);
1643
1644         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1645         pci_push(base);
1646         udelay(NV_MAC_RESET_DELAY);
1647         writel(0, base + NvRegMacReset);
1648         pci_push(base);
1649         udelay(NV_MAC_RESET_DELAY);
1650
1651         /* restore saved registers */
1652         writel(temp1, base + NvRegMacAddrA);
1653         writel(temp2, base + NvRegMacAddrB);
1654         writel(temp3, base + NvRegTransmitPoll);
1655
1656         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1657         pci_push(base);
1658 }
1659
1660 /* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
1661 static void nv_update_stats(struct net_device *dev)
1662 {
1663         struct fe_priv *np = netdev_priv(dev);
1664         u8 __iomem *base = get_hwbase(dev);
1665
1666         /* If it happens that this is run in top-half context, then
1667          * replace the spin_lock of hwstats_lock with
1668          * spin_lock_irqsave() in calling functions. */
1669         WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half");
1670         assert_spin_locked(&np->hwstats_lock);
1671
1672         /* query hardware */
1673         np->estats.tx_bytes += readl(base + NvRegTxCnt);
1674         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1675         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1676         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1677         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1678         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1679         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1680         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1681         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1682         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1683         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1684         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1685         np->estats.rx_runt += readl(base + NvRegRxRunt);
1686         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1687         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1688         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1689         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1690         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1691         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1692         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1693         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1694         np->estats.rx_packets =
1695                 np->estats.rx_unicast +
1696                 np->estats.rx_multicast +
1697                 np->estats.rx_broadcast;
1698         np->estats.rx_errors_total =
1699                 np->estats.rx_crc_errors +
1700                 np->estats.rx_over_errors +
1701                 np->estats.rx_frame_error +
1702                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1703                 np->estats.rx_late_collision +
1704                 np->estats.rx_runt +
1705                 np->estats.rx_frame_too_long;
1706         np->estats.tx_errors_total =
1707                 np->estats.tx_late_collision +
1708                 np->estats.tx_fifo_errors +
1709                 np->estats.tx_carrier_errors +
1710                 np->estats.tx_excess_deferral +
1711                 np->estats.tx_retry_error;
1712
1713         if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1714                 np->estats.tx_deferral += readl(base + NvRegTxDef);
1715                 np->estats.tx_packets += readl(base + NvRegTxFrame);
1716                 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1717                 np->estats.tx_pause += readl(base + NvRegTxPause);
1718                 np->estats.rx_pause += readl(base + NvRegRxPause);
1719                 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1720                 np->estats.rx_errors_total += np->estats.rx_drop_frame;
1721         }
1722
1723         if (np->driver_data & DEV_HAS_STATISTICS_V3) {
1724                 np->estats.tx_unicast += readl(base + NvRegTxUnicast);
1725                 np->estats.tx_multicast += readl(base + NvRegTxMulticast);
1726                 np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
1727         }
1728 }
1729
1730 /*
1731  * nv_get_stats64: dev->ndo_get_stats64 function
1732  * Get latest stats value from the nic.
1733  * Called with read_lock(&dev_base_lock) held for read -
1734  * only synchronized against unregister_netdevice.
1735  */
1736 static struct rtnl_link_stats64*
1737 nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
1738         __acquires(&netdev_priv(dev)->hwstats_lock)
1739         __releases(&netdev_priv(dev)->hwstats_lock)
1740 {
1741         struct fe_priv *np = netdev_priv(dev);
1742         unsigned int syncp_start;
1743
1744         /*
1745          * Note: because HW stats are not always available and for
1746          * consistency reasons, the following ifconfig stats are
1747          * managed by software: rx_bytes, tx_bytes, rx_packets and
1748          * tx_packets. The related hardware stats reported by ethtool
1749          * should be equivalent to these ifconfig stats, with 4
1750          * additional bytes per packet (Ethernet FCS CRC), except for
1751          * tx_packets when TSO kicks in.
1752          */
1753
1754         /* software stats */
1755         do {
1756                 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_rx_syncp);
1757                 storage->rx_packets       = np->stat_rx_packets;
1758                 storage->rx_bytes         = np->stat_rx_bytes;
1759                 storage->rx_dropped       = np->stat_rx_dropped;
1760                 storage->rx_missed_errors = np->stat_rx_missed_errors;
1761         } while (u64_stats_fetch_retry_bh(&np->swstats_rx_syncp, syncp_start));
1762
1763         do {
1764                 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_tx_syncp);
1765                 storage->tx_packets = np->stat_tx_packets;
1766                 storage->tx_bytes   = np->stat_tx_bytes;
1767                 storage->tx_dropped = np->stat_tx_dropped;
1768         } while (u64_stats_fetch_retry_bh(&np->swstats_tx_syncp, syncp_start));
1769
1770         /* If the nic supports hw counters then retrieve latest values */
1771         if (np->driver_data & DEV_HAS_STATISTICS_V123) {
1772                 spin_lock_bh(&np->hwstats_lock);
1773
1774                 nv_update_stats(dev);
1775
1776                 /* generic stats */
1777                 storage->rx_errors = np->estats.rx_errors_total;
1778                 storage->tx_errors = np->estats.tx_errors_total;
1779
1780                 /* meaningful only when NIC supports stats v3 */
1781                 storage->multicast = np->estats.rx_multicast;
1782
1783                 /* detailed rx_errors */
1784                 storage->rx_length_errors = np->estats.rx_length_error;
1785                 storage->rx_over_errors   = np->estats.rx_over_errors;
1786                 storage->rx_crc_errors    = np->estats.rx_crc_errors;
1787                 storage->rx_frame_errors  = np->estats.rx_frame_align_error;
1788                 storage->rx_fifo_errors   = np->estats.rx_drop_frame;
1789
1790                 /* detailed tx_errors */
1791                 storage->tx_carrier_errors = np->estats.tx_carrier_errors;
1792                 storage->tx_fifo_errors    = np->estats.tx_fifo_errors;
1793
1794                 spin_unlock_bh(&np->hwstats_lock);
1795         }
1796
1797         return storage;
1798 }
1799
1800 /*
1801  * nv_alloc_rx: fill rx ring entries.
1802  * Return 1 if the allocations for the skbs failed and the
1803  * rx engine is without Available descriptors
1804  */
1805 static int nv_alloc_rx(struct net_device *dev)
1806 {
1807         struct fe_priv *np = netdev_priv(dev);
1808         struct ring_desc *less_rx;
1809
1810         less_rx = np->get_rx.orig;
1811         if (less_rx-- == np->first_rx.orig)
1812                 less_rx = np->last_rx.orig;
1813
1814         while (np->put_rx.orig != less_rx) {
1815                 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1816                 if (skb) {
1817                         np->put_rx_ctx->skb = skb;
1818                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1819                                                              skb->data,
1820                                                              skb_tailroom(skb),
1821                                                              PCI_DMA_FROMDEVICE);
1822                         if (pci_dma_mapping_error(np->pci_dev,
1823                                                   np->put_rx_ctx->dma)) {
1824                                 kfree_skb(skb);
1825                                 goto packet_dropped;
1826                         }
1827                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1828                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1829                         wmb();
1830                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1831                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1832                                 np->put_rx.orig = np->first_rx.orig;
1833                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1834                                 np->put_rx_ctx = np->first_rx_ctx;
1835                 } else {
1836 packet_dropped:
1837                         u64_stats_update_begin(&np->swstats_rx_syncp);
1838                         np->stat_rx_dropped++;
1839                         u64_stats_update_end(&np->swstats_rx_syncp);
1840                         return 1;
1841                 }
1842         }
1843         return 0;
1844 }
1845
1846 static int nv_alloc_rx_optimized(struct net_device *dev)
1847 {
1848         struct fe_priv *np = netdev_priv(dev);
1849         struct ring_desc_ex *less_rx;
1850
1851         less_rx = np->get_rx.ex;
1852         if (less_rx-- == np->first_rx.ex)
1853                 less_rx = np->last_rx.ex;
1854
1855         while (np->put_rx.ex != less_rx) {
1856                 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1857                 if (skb) {
1858                         np->put_rx_ctx->skb = skb;
1859                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1860                                                              skb->data,
1861                                                              skb_tailroom(skb),
1862                                                              PCI_DMA_FROMDEVICE);
1863                         if (pci_dma_mapping_error(np->pci_dev,
1864                                                   np->put_rx_ctx->dma)) {
1865                                 kfree_skb(skb);
1866                                 goto packet_dropped;
1867                         }
1868                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1869                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1870                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1871                         wmb();
1872                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1873                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1874                                 np->put_rx.ex = np->first_rx.ex;
1875                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1876                                 np->put_rx_ctx = np->first_rx_ctx;
1877                 } else {
1878 packet_dropped:
1879                         u64_stats_update_begin(&np->swstats_rx_syncp);
1880                         np->stat_rx_dropped++;
1881                         u64_stats_update_end(&np->swstats_rx_syncp);
1882                         return 1;
1883                 }
1884         }
1885         return 0;
1886 }
1887
1888 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1889 static void nv_do_rx_refill(unsigned long data)
1890 {
1891         struct net_device *dev = (struct net_device *) data;
1892         struct fe_priv *np = netdev_priv(dev);
1893
1894         /* Just reschedule NAPI rx processing */
1895         napi_schedule(&np->napi);
1896 }
1897
1898 static void nv_init_rx(struct net_device *dev)
1899 {
1900         struct fe_priv *np = netdev_priv(dev);
1901         int i;
1902
1903         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1904
1905         if (!nv_optimized(np))
1906                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1907         else
1908                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1909         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1910         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1911
1912         for (i = 0; i < np->rx_ring_size; i++) {
1913                 if (!nv_optimized(np)) {
1914                         np->rx_ring.orig[i].flaglen = 0;
1915                         np->rx_ring.orig[i].buf = 0;
1916                 } else {
1917                         np->rx_ring.ex[i].flaglen = 0;
1918                         np->rx_ring.ex[i].txvlan = 0;
1919                         np->rx_ring.ex[i].bufhigh = 0;
1920                         np->rx_ring.ex[i].buflow = 0;
1921                 }
1922                 np->rx_skb[i].skb = NULL;
1923                 np->rx_skb[i].dma = 0;
1924         }
1925 }
1926
1927 static void nv_init_tx(struct net_device *dev)
1928 {
1929         struct fe_priv *np = netdev_priv(dev);
1930         int i;
1931
1932         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1933
1934         if (!nv_optimized(np))
1935                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1936         else
1937                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1938         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1939         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1940         netdev_reset_queue(np->dev);
1941         np->tx_pkts_in_progress = 0;
1942         np->tx_change_owner = NULL;
1943         np->tx_end_flip = NULL;
1944         np->tx_stop = 0;
1945
1946         for (i = 0; i < np->tx_ring_size; i++) {
1947                 if (!nv_optimized(np)) {
1948                         np->tx_ring.orig[i].flaglen = 0;
1949                         np->tx_ring.orig[i].buf = 0;
1950                 } else {
1951                         np->tx_ring.ex[i].flaglen = 0;
1952                         np->tx_ring.ex[i].txvlan = 0;
1953                         np->tx_ring.ex[i].bufhigh = 0;
1954                         np->tx_ring.ex[i].buflow = 0;
1955                 }
1956                 np->tx_skb[i].skb = NULL;
1957                 np->tx_skb[i].dma = 0;
1958                 np->tx_skb[i].dma_len = 0;
1959                 np->tx_skb[i].dma_single = 0;
1960                 np->tx_skb[i].first_tx_desc = NULL;
1961                 np->tx_skb[i].next_tx_ctx = NULL;
1962         }
1963 }
1964
1965 static int nv_init_ring(struct net_device *dev)
1966 {
1967         struct fe_priv *np = netdev_priv(dev);
1968
1969         nv_init_tx(dev);
1970         nv_init_rx(dev);
1971
1972         if (!nv_optimized(np))
1973                 return nv_alloc_rx(dev);
1974         else
1975                 return nv_alloc_rx_optimized(dev);
1976 }
1977
1978 static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1979 {
1980         if (tx_skb->dma) {
1981                 if (tx_skb->dma_single)
1982                         pci_unmap_single(np->pci_dev, tx_skb->dma,
1983                                          tx_skb->dma_len,
1984                                          PCI_DMA_TODEVICE);
1985                 else
1986                         pci_unmap_page(np->pci_dev, tx_skb->dma,
1987                                        tx_skb->dma_len,
1988                                        PCI_DMA_TODEVICE);
1989                 tx_skb->dma = 0;
1990         }
1991 }
1992
1993 static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1994 {
1995         nv_unmap_txskb(np, tx_skb);
1996         if (tx_skb->skb) {
1997                 dev_kfree_skb_any(tx_skb->skb);
1998                 tx_skb->skb = NULL;
1999                 return 1;
2000         }
2001         return 0;
2002 }
2003
2004 static void nv_drain_tx(struct net_device *dev)
2005 {
2006         struct fe_priv *np = netdev_priv(dev);
2007         unsigned int i;
2008
2009         for (i = 0; i < np->tx_ring_size; i++) {
2010                 if (!nv_optimized(np)) {
2011                         np->tx_ring.orig[i].flaglen = 0;
2012                         np->tx_ring.orig[i].buf = 0;
2013                 } else {
2014                         np->tx_ring.ex[i].flaglen = 0;
2015                         np->tx_ring.ex[i].txvlan = 0;
2016                         np->tx_ring.ex[i].bufhigh = 0;
2017                         np->tx_ring.ex[i].buflow = 0;
2018                 }
2019                 if (nv_release_txskb(np, &np->tx_skb[i])) {
2020                         u64_stats_update_begin(&np->swstats_tx_syncp);
2021                         np->stat_tx_dropped++;
2022                         u64_stats_update_end(&np->swstats_tx_syncp);
2023                 }
2024                 np->tx_skb[i].dma = 0;
2025                 np->tx_skb[i].dma_len = 0;
2026                 np->tx_skb[i].dma_single = 0;
2027                 np->tx_skb[i].first_tx_desc = NULL;
2028                 np->tx_skb[i].next_tx_ctx = NULL;
2029         }
2030         np->tx_pkts_in_progress = 0;
2031         np->tx_change_owner = NULL;
2032         np->tx_end_flip = NULL;
2033 }
2034
2035 static void nv_drain_rx(struct net_device *dev)
2036 {
2037         struct fe_priv *np = netdev_priv(dev);
2038         int i;
2039
2040         for (i = 0; i < np->rx_ring_size; i++) {
2041                 if (!nv_optimized(np)) {
2042                         np->rx_ring.orig[i].flaglen = 0;
2043                         np->rx_ring.orig[i].buf = 0;
2044                 } else {
2045                         np->rx_ring.ex[i].flaglen = 0;
2046                         np->rx_ring.ex[i].txvlan = 0;
2047                         np->rx_ring.ex[i].bufhigh = 0;
2048                         np->rx_ring.ex[i].buflow = 0;
2049                 }
2050                 wmb();
2051                 if (np->rx_skb[i].skb) {
2052                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
2053                                          (skb_end_pointer(np->rx_skb[i].skb) -
2054                                           np->rx_skb[i].skb->data),
2055                                          PCI_DMA_FROMDEVICE);
2056                         dev_kfree_skb(np->rx_skb[i].skb);
2057                         np->rx_skb[i].skb = NULL;
2058                 }
2059         }
2060 }
2061
2062 static void nv_drain_rxtx(struct net_device *dev)
2063 {
2064         nv_drain_tx(dev);
2065         nv_drain_rx(dev);
2066 }
2067
2068 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
2069 {
2070         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
2071 }
2072
2073 static void nv_legacybackoff_reseed(struct net_device *dev)
2074 {
2075         u8 __iomem *base = get_hwbase(dev);
2076         u32 reg;
2077         u32 low;
2078         int tx_status = 0;
2079
2080         reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
2081         get_random_bytes(&low, sizeof(low));
2082         reg |= low & NVREG_SLOTTIME_MASK;
2083
2084         /* Need to stop tx before change takes effect.
2085          * Caller has already gained np->lock.
2086          */
2087         tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
2088         if (tx_status)
2089                 nv_stop_tx(dev);
2090         nv_stop_rx(dev);
2091         writel(reg, base + NvRegSlotTime);
2092         if (tx_status)
2093                 nv_start_tx(dev);
2094         nv_start_rx(dev);
2095 }
2096
2097 /* Gear Backoff Seeds */
2098 #define BACKOFF_SEEDSET_ROWS    8
2099 #define BACKOFF_SEEDSET_LFSRS   15
2100
2101 /* Known Good seed sets */
2102 static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2103         {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2104         {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
2105         {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2106         {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
2107         {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
2108         {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
2109         {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800,  84},
2110         {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
2111
2112 static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2113         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2114         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2115         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
2116         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2117         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2118         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2119         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2120         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
2121
2122 static void nv_gear_backoff_reseed(struct net_device *dev)
2123 {
2124         u8 __iomem *base = get_hwbase(dev);
2125         u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
2126         u32 temp, seedset, combinedSeed;
2127         int i;
2128
2129         /* Setup seed for free running LFSR */
2130         /* We are going to read the time stamp counter 3 times
2131            and swizzle bits around to increase randomness */
2132         get_random_bytes(&miniseed1, sizeof(miniseed1));
2133         miniseed1 &= 0x0fff;
2134         if (miniseed1 == 0)
2135                 miniseed1 = 0xabc;
2136
2137         get_random_bytes(&miniseed2, sizeof(miniseed2));
2138         miniseed2 &= 0x0fff;
2139         if (miniseed2 == 0)
2140                 miniseed2 = 0xabc;
2141         miniseed2_reversed =
2142                 ((miniseed2 & 0xF00) >> 8) |
2143                  (miniseed2 & 0x0F0) |
2144                  ((miniseed2 & 0x00F) << 8);
2145
2146         get_random_bytes(&miniseed3, sizeof(miniseed3));
2147         miniseed3 &= 0x0fff;
2148         if (miniseed3 == 0)
2149                 miniseed3 = 0xabc;
2150         miniseed3_reversed =
2151                 ((miniseed3 & 0xF00) >> 8) |
2152                  (miniseed3 & 0x0F0) |
2153                  ((miniseed3 & 0x00F) << 8);
2154
2155         combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2156                        (miniseed2 ^ miniseed3_reversed);
2157
2158         /* Seeds can not be zero */
2159         if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2160                 combinedSeed |= 0x08;
2161         if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2162                 combinedSeed |= 0x8000;
2163
2164         /* No need to disable tx here */
2165         temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2166         temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2167         temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2168         writel(temp, base + NvRegBackOffControl);
2169
2170         /* Setup seeds for all gear LFSRs. */
2171         get_random_bytes(&seedset, sizeof(seedset));
2172         seedset = seedset % BACKOFF_SEEDSET_ROWS;
2173         for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
2174                 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2175                 temp |= main_seedset[seedset][i-1] & 0x3ff;
2176                 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2177                 writel(temp, base + NvRegBackOffControl);
2178         }
2179 }
2180
2181 /*
2182  * nv_start_xmit: dev->hard_start_xmit function
2183  * Called with netif_tx_lock held.
2184  */
2185 static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2186 {
2187         struct fe_priv *np = netdev_priv(dev);
2188         u32 tx_flags = 0;
2189         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2190         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2191         unsigned int i;
2192         u32 offset = 0;
2193         u32 bcnt;
2194         u32 size = skb_headlen(skb);
2195         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2196         u32 empty_slots;
2197         struct ring_desc *put_tx;
2198         struct ring_desc *start_tx;
2199         struct ring_desc *prev_tx;
2200         struct nv_skb_map *prev_tx_ctx;
2201         struct nv_skb_map *tmp_tx_ctx = NULL, *start_tx_ctx = NULL;
2202         unsigned long flags;
2203
2204         /* add fragments to entries count */
2205         for (i = 0; i < fragments; i++) {
2206                 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2207
2208                 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2209                            ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2210         }
2211
2212         spin_lock_irqsave(&np->lock, flags);
2213         empty_slots = nv_get_empty_tx_slots(np);
2214         if (unlikely(empty_slots <= entries)) {
2215                 netif_stop_queue(dev);
2216                 np->tx_stop = 1;
2217                 spin_unlock_irqrestore(&np->lock, flags);
2218                 return NETDEV_TX_BUSY;
2219         }
2220         spin_unlock_irqrestore(&np->lock, flags);
2221
2222         start_tx = put_tx = np->put_tx.orig;
2223
2224         /* setup the header buffer */
2225         do {
2226                 prev_tx = put_tx;
2227                 prev_tx_ctx = np->put_tx_ctx;
2228                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2229                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2230                                                 PCI_DMA_TODEVICE);
2231                 if (pci_dma_mapping_error(np->pci_dev,
2232                                           np->put_tx_ctx->dma)) {
2233                         /* on DMA mapping error - drop the packet */
2234                         kfree_skb(skb);
2235                         u64_stats_update_begin(&np->swstats_tx_syncp);
2236                         np->stat_tx_dropped++;
2237                         u64_stats_update_end(&np->swstats_tx_syncp);
2238                         return NETDEV_TX_OK;
2239                 }
2240                 np->put_tx_ctx->dma_len = bcnt;
2241                 np->put_tx_ctx->dma_single = 1;
2242                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2243                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2244
2245                 tx_flags = np->tx_flags;
2246                 offset += bcnt;
2247                 size -= bcnt;
2248                 if (unlikely(put_tx++ == np->last_tx.orig))
2249                         put_tx = np->first_tx.orig;
2250                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2251                         np->put_tx_ctx = np->first_tx_ctx;
2252         } while (size);
2253
2254         /* setup the fragments */
2255         for (i = 0; i < fragments; i++) {
2256                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2257                 u32 frag_size = skb_frag_size(frag);
2258                 offset = 0;
2259
2260                 do {
2261                         prev_tx = put_tx;
2262                         prev_tx_ctx = np->put_tx_ctx;
2263                         if (!start_tx_ctx)
2264                                 start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2265
2266                         bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2267                         np->put_tx_ctx->dma = skb_frag_dma_map(
2268                                                         &np->pci_dev->dev,
2269                                                         frag, offset,
2270                                                         bcnt,
2271                                                         DMA_TO_DEVICE);
2272                         if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
2273
2274                                 /* Unwind the mapped fragments */
2275                                 do {
2276                                         nv_unmap_txskb(np, start_tx_ctx);
2277                                         if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2278                                                 tmp_tx_ctx = np->first_tx_ctx;
2279                                 } while (tmp_tx_ctx != np->put_tx_ctx);
2280                                 kfree_skb(skb);
2281                                 np->put_tx_ctx = start_tx_ctx;
2282                                 u64_stats_update_begin(&np->swstats_tx_syncp);
2283                                 np->stat_tx_dropped++;
2284                                 u64_stats_update_end(&np->swstats_tx_syncp);
2285                                 return NETDEV_TX_OK;
2286                         }
2287
2288                         np->put_tx_ctx->dma_len = bcnt;
2289                         np->put_tx_ctx->dma_single = 0;
2290                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2291                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2292
2293                         offset += bcnt;
2294                         frag_size -= bcnt;
2295                         if (unlikely(put_tx++ == np->last_tx.orig))
2296                                 put_tx = np->first_tx.orig;
2297                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2298                                 np->put_tx_ctx = np->first_tx_ctx;
2299                 } while (frag_size);
2300         }
2301
2302         /* set last fragment flag  */
2303         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2304
2305         /* save skb in this slot's context area */
2306         prev_tx_ctx->skb = skb;
2307
2308         if (skb_is_gso(skb))
2309                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2310         else
2311                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2312                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2313
2314         spin_lock_irqsave(&np->lock, flags);
2315
2316         /* set tx flags */
2317         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2318
2319         netdev_sent_queue(np->dev, skb->len);
2320
2321         skb_tx_timestamp(skb);
2322
2323         np->put_tx.orig = put_tx;
2324
2325         spin_unlock_irqrestore(&np->lock, flags);
2326
2327         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2328         return NETDEV_TX_OK;
2329 }
2330
2331 static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
2332                                            struct net_device *dev)
2333 {
2334         struct fe_priv *np = netdev_priv(dev);
2335         u32 tx_flags = 0;
2336         u32 tx_flags_extra;
2337         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2338         unsigned int i;
2339         u32 offset = 0;
2340         u32 bcnt;
2341         u32 size = skb_headlen(skb);
2342         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2343         u32 empty_slots;
2344         struct ring_desc_ex *put_tx;
2345         struct ring_desc_ex *start_tx;
2346         struct ring_desc_ex *prev_tx;
2347         struct nv_skb_map *prev_tx_ctx;
2348         struct nv_skb_map *start_tx_ctx = NULL;
2349         struct nv_skb_map *tmp_tx_ctx = NULL;
2350         unsigned long flags;
2351
2352         /* add fragments to entries count */
2353         for (i = 0; i < fragments; i++) {
2354                 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2355
2356                 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2357                            ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2358         }
2359
2360         spin_lock_irqsave(&np->lock, flags);
2361         empty_slots = nv_get_empty_tx_slots(np);
2362         if (unlikely(empty_slots <= entries)) {
2363                 netif_stop_queue(dev);
2364                 np->tx_stop = 1;
2365                 spin_unlock_irqrestore(&np->lock, flags);
2366                 return NETDEV_TX_BUSY;
2367         }
2368         spin_unlock_irqrestore(&np->lock, flags);
2369
2370         start_tx = put_tx = np->put_tx.ex;
2371         start_tx_ctx = np->put_tx_ctx;
2372
2373         /* setup the header buffer */
2374         do {
2375                 prev_tx = put_tx;
2376                 prev_tx_ctx = np->put_tx_ctx;
2377                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2378                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2379                                                 PCI_DMA_TODEVICE);
2380                 if (pci_dma_mapping_error(np->pci_dev,
2381                                           np->put_tx_ctx->dma)) {
2382                         /* on DMA mapping error - drop the packet */
2383                         kfree_skb(skb);
2384                         u64_stats_update_begin(&np->swstats_tx_syncp);
2385                         np->stat_tx_dropped++;
2386                         u64_stats_update_end(&np->swstats_tx_syncp);
2387                         return NETDEV_TX_OK;
2388                 }
2389                 np->put_tx_ctx->dma_len = bcnt;
2390                 np->put_tx_ctx->dma_single = 1;
2391                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2392                 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2393                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2394
2395                 tx_flags = NV_TX2_VALID;
2396                 offset += bcnt;
2397                 size -= bcnt;
2398                 if (unlikely(put_tx++ == np->last_tx.ex))
2399                         put_tx = np->first_tx.ex;
2400                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2401                         np->put_tx_ctx = np->first_tx_ctx;
2402         } while (size);
2403
2404         /* setup the fragments */
2405         for (i = 0; i < fragments; i++) {
2406                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2407                 u32 frag_size = skb_frag_size(frag);
2408                 offset = 0;
2409
2410                 do {
2411                         prev_tx = put_tx;
2412                         prev_tx_ctx = np->put_tx_ctx;
2413                         bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2414                         if (!start_tx_ctx)
2415                                 start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2416                         np->put_tx_ctx->dma = skb_frag_dma_map(
2417                                                         &np->pci_dev->dev,
2418                                                         frag, offset,
2419                                                         bcnt,
2420                                                         DMA_TO_DEVICE);
2421
2422                         if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
2423
2424                                 /* Unwind the mapped fragments */
2425                                 do {
2426                                         nv_unmap_txskb(np, start_tx_ctx);
2427                                         if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2428                                                 tmp_tx_ctx = np->first_tx_ctx;
2429                                 } while (tmp_tx_ctx != np->put_tx_ctx);
2430                                 kfree_skb(skb);
2431                                 np->put_tx_ctx = start_tx_ctx;
2432                                 u64_stats_update_begin(&np->swstats_tx_syncp);
2433                                 np->stat_tx_dropped++;
2434                                 u64_stats_update_end(&np->swstats_tx_syncp);
2435                                 return NETDEV_TX_OK;
2436                         }
2437                         np->put_tx_ctx->dma_len = bcnt;
2438                         np->put_tx_ctx->dma_single = 0;
2439                         put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2440                         put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2441                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2442
2443                         offset += bcnt;
2444                         frag_size -= bcnt;
2445                         if (unlikely(put_tx++ == np->last_tx.ex))
2446                                 put_tx = np->first_tx.ex;
2447                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2448                                 np->put_tx_ctx = np->first_tx_ctx;
2449                 } while (frag_size);
2450         }
2451
2452         /* set last fragment flag  */
2453         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2454
2455         /* save skb in this slot's context area */
2456         prev_tx_ctx->skb = skb;
2457
2458         if (skb_is_gso(skb))
2459                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2460         else
2461                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2462                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2463
2464         /* vlan tag */
2465         if (vlan_tx_tag_present(skb))
2466                 start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2467                                         vlan_tx_tag_get(skb));
2468         else
2469                 start_tx->txvlan = 0;
2470
2471         spin_lock_irqsave(&np->lock, flags);
2472
2473         if (np->tx_limit) {
2474                 /* Limit the number of outstanding tx. Setup all fragments, but
2475                  * do not set the VALID bit on the first descriptor. Save a pointer
2476                  * to that descriptor and also for next skb_map element.
2477                  */
2478
2479                 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2480                         if (!np->tx_change_owner)
2481                                 np->tx_change_owner = start_tx_ctx;
2482
2483                         /* remove VALID bit */
2484                         tx_flags &= ~NV_TX2_VALID;
2485                         start_tx_ctx->first_tx_desc = start_tx;
2486                         start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2487                         np->tx_end_flip = np->put_tx_ctx;
2488                 } else {
2489                         np->tx_pkts_in_progress++;
2490                 }
2491         }
2492
2493         /* set tx flags */
2494         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2495
2496         netdev_sent_queue(np->dev, skb->len);
2497
2498         skb_tx_timestamp(skb);
2499
2500         np->put_tx.ex = put_tx;
2501
2502         spin_unlock_irqrestore(&np->lock, flags);
2503
2504         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2505         return NETDEV_TX_OK;
2506 }
2507
2508 static inline void nv_tx_flip_ownership(struct net_device *dev)
2509 {
2510         struct fe_priv *np = netdev_priv(dev);
2511
2512         np->tx_pkts_in_progress--;
2513         if (np->tx_change_owner) {
2514                 np->tx_change_owner->first_tx_desc->flaglen |=
2515                         cpu_to_le32(NV_TX2_VALID);
2516                 np->tx_pkts_in_progress++;
2517
2518                 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2519                 if (np->tx_change_owner == np->tx_end_flip)
2520                         np->tx_change_owner = NULL;
2521
2522                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2523         }
2524 }
2525
2526 /*
2527  * nv_tx_done: check for completed packets, release the skbs.
2528  *
2529  * Caller must own np->lock.
2530  */
2531 static int nv_tx_done(struct net_device *dev, int limit)
2532 {
2533         struct fe_priv *np = netdev_priv(dev);
2534         u32 flags;
2535         int tx_work = 0;
2536         struct ring_desc *orig_get_tx = np->get_tx.orig;
2537         unsigned int bytes_compl = 0;
2538
2539         while ((np->get_tx.orig != np->put_tx.orig) &&
2540                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
2541                (tx_work < limit)) {
2542
2543                 nv_unmap_txskb(np, np->get_tx_ctx);
2544
2545                 if (np->desc_ver == DESC_VER_1) {
2546                         if (flags & NV_TX_LASTPACKET) {
2547                                 if (flags & NV_TX_ERROR) {
2548                                         if ((flags & NV_TX_RETRYERROR)
2549                                             && !(flags & NV_TX_RETRYCOUNT_MASK))
2550                                                 nv_legacybackoff_reseed(dev);
2551                                 } else {
2552                                         u64_stats_update_begin(&np->swstats_tx_syncp);
2553                                         np->stat_tx_packets++;
2554                                         np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2555                                         u64_stats_update_end(&np->swstats_tx_syncp);
2556                                 }
2557                                 bytes_compl += np->get_tx_ctx->skb->len;
2558                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2559                                 np->get_tx_ctx->skb = NULL;
2560                                 tx_work++;
2561                         }
2562                 } else {
2563                         if (flags & NV_TX2_LASTPACKET) {
2564                                 if (flags & NV_TX2_ERROR) {
2565                                         if ((flags & NV_TX2_RETRYERROR)
2566                                             && !(flags & NV_TX2_RETRYCOUNT_MASK))
2567                                                 nv_legacybackoff_reseed(dev);
2568                                 } else {
2569                                         u64_stats_update_begin(&np->swstats_tx_syncp);
2570                                         np->stat_tx_packets++;
2571                                         np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2572                                         u64_stats_update_end(&np->swstats_tx_syncp);
2573                                 }
2574                                 bytes_compl += np->get_tx_ctx->skb->len;
2575                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2576                                 np->get_tx_ctx->skb = NULL;
2577                                 tx_work++;
2578                         }
2579                 }
2580                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2581                         np->get_tx.orig = np->first_tx.orig;
2582                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2583                         np->get_tx_ctx = np->first_tx_ctx;
2584         }
2585
2586         netdev_completed_queue(np->dev, tx_work, bytes_compl);
2587
2588         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2589                 np->tx_stop = 0;
2590                 netif_wake_queue(dev);
2591         }
2592         return tx_work;
2593 }
2594
2595 static int nv_tx_done_optimized(struct net_device *dev, int limit)
2596 {
2597         struct fe_priv *np = netdev_priv(dev);
2598         u32 flags;
2599         int tx_work = 0;
2600         struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
2601         unsigned long bytes_cleaned = 0;
2602
2603         while ((np->get_tx.ex != np->put_tx.ex) &&
2604                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
2605                (tx_work < limit)) {
2606
2607                 nv_unmap_txskb(np, np->get_tx_ctx);
2608
2609                 if (flags & NV_TX2_LASTPACKET) {
2610                         if (flags & NV_TX2_ERROR) {
2611                                 if ((flags & NV_TX2_RETRYERROR)
2612                                     && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2613                                         if (np->driver_data & DEV_HAS_GEAR_MODE)
2614                                                 nv_gear_backoff_reseed(dev);
2615                                         else
2616                                                 nv_legacybackoff_reseed(dev);
2617                                 }
2618                         } else {
2619                                 u64_stats_update_begin(&np->swstats_tx_syncp);
2620                                 np->stat_tx_packets++;
2621                                 np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2622                                 u64_stats_update_end(&np->swstats_tx_syncp);
2623                         }
2624
2625                         bytes_cleaned += np->get_tx_ctx->skb->len;
2626                         dev_kfree_skb_any(np->get_tx_ctx->skb);
2627                         np->get_tx_ctx->skb = NULL;
2628                         tx_work++;
2629
2630                         if (np->tx_limit)
2631                                 nv_tx_flip_ownership(dev);
2632                 }
2633
2634                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2635                         np->get_tx.ex = np->first_tx.ex;
2636                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2637                         np->get_tx_ctx = np->first_tx_ctx;
2638         }
2639
2640         netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
2641
2642         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2643                 np->tx_stop = 0;
2644                 netif_wake_queue(dev);
2645         }
2646         return tx_work;
2647 }
2648
2649 /*
2650  * nv_tx_timeout: dev->tx_timeout function
2651  * Called with netif_tx_lock held.
2652  */
2653 static void nv_tx_timeout(struct net_device *dev)
2654 {
2655         struct fe_priv *np = netdev_priv(dev);
2656         u8 __iomem *base = get_hwbase(dev);
2657         u32 status;
2658         union ring_type put_tx;
2659         int saved_tx_limit;
2660
2661         if (np->msi_flags & NV_MSI_X_ENABLED)
2662                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2663         else
2664                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2665
2666         netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
2667
2668         if (unlikely(debug_tx_timeout)) {
2669                 int i;
2670
2671                 netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
2672                 netdev_info(dev, "Dumping tx registers\n");
2673                 for (i = 0; i <= np->register_size; i += 32) {
2674                         netdev_info(dev,
2675                                     "%3x: %08x %08x %08x %08x "
2676                                     "%08x %08x %08x %08x\n",
2677                                     i,
2678                                     readl(base + i + 0), readl(base + i + 4),
2679                                     readl(base + i + 8), readl(base + i + 12),
2680                                     readl(base + i + 16), readl(base + i + 20),
2681                                     readl(base + i + 24), readl(base + i + 28));
2682                 }
2683                 netdev_info(dev, "Dumping tx ring\n");
2684                 for (i = 0; i < np->tx_ring_size; i += 4) {
2685                         if (!nv_optimized(np)) {
2686                                 netdev_info(dev,
2687                                             "%03x: %08x %08x // %08x %08x "
2688                                             "// %08x %08x // %08x %08x\n",
2689                                             i,
2690                                             le32_to_cpu(np->tx_ring.orig[i].buf),
2691                                             le32_to_cpu(np->tx_ring.orig[i].flaglen),
2692                                             le32_to_cpu(np->tx_ring.orig[i+1].buf),
2693                                             le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2694                                             le32_to_cpu(np->tx_ring.orig[i+2].buf),
2695                                             le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2696                                             le32_to_cpu(np->tx_ring.orig[i+3].buf),
2697                                             le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2698                         } else {
2699                                 netdev_info(dev,
2700                                             "%03x: %08x %08x %08x "
2701                                             "// %08x %08x %08x "
2702                                             "// %08x %08x %08x "
2703                                             "// %08x %08x %08x\n",
2704                                             i,
2705                                             le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2706                                             le32_to_cpu(np->tx_ring.ex[i].buflow),
2707                                             le32_to_cpu(np->tx_ring.ex[i].flaglen),
2708                                             le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2709                                             le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2710                                             le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2711                                             le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2712                                             le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2713                                             le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2714                                             le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2715                                             le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2716                                             le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2717                         }
2718                 }
2719         }
2720
2721         spin_lock_irq(&np->lock);
2722
2723         /* 1) stop tx engine */
2724         nv_stop_tx(dev);
2725
2726         /* 2) complete any outstanding tx and do not give HW any limited tx pkts */
2727         saved_tx_limit = np->tx_limit;
2728         np->tx_limit = 0; /* prevent giving HW any limited pkts */
2729         np->tx_stop = 0;  /* prevent waking tx queue */
2730         if (!nv_optimized(np))
2731                 nv_tx_done(dev, np->tx_ring_size);
2732         else
2733                 nv_tx_done_optimized(dev, np->tx_ring_size);
2734
2735         /* save current HW position */
2736         if (np->tx_change_owner)
2737                 put_tx.ex = np->tx_change_owner->first_tx_desc;
2738         else
2739                 put_tx = np->put_tx;
2740
2741         /* 3) clear all tx state */
2742         nv_drain_tx(dev);
2743         nv_init_tx(dev);
2744
2745         /* 4) restore state to current HW position */
2746         np->get_tx = np->put_tx = put_tx;
2747         np->tx_limit = saved_tx_limit;
2748
2749         /* 5) restart tx engine */
2750         nv_start_tx(dev);
2751         netif_wake_queue(dev);
2752         spin_unlock_irq(&np->lock);
2753 }
2754
2755 /*
2756  * Called when the nic notices a mismatch between the actual data len on the
2757  * wire and the len indicated in the 802 header
2758  */
2759 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2760 {
2761         int hdrlen;     /* length of the 802 header */
2762         int protolen;   /* length as stored in the proto field */
2763
2764         /* 1) calculate len according to header */
2765         if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2766                 protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
2767                 hdrlen = VLAN_HLEN;
2768         } else {
2769                 protolen = ntohs(((struct ethhdr *)packet)->h_proto);
2770                 hdrlen = ETH_HLEN;
2771         }
2772         if (protolen > ETH_DATA_LEN)
2773                 return datalen; /* Value in proto field not a len, no checks possible */
2774
2775         protolen += hdrlen;
2776         /* consistency checks: */
2777         if (datalen > ETH_ZLEN) {
2778                 if (datalen >= protolen) {
2779                         /* more data on wire than in 802 header, trim of
2780                          * additional data.
2781                          */
2782                         return protolen;
2783                 } else {
2784                         /* less data on wire than mentioned in header.
2785                          * Discard the packet.
2786                          */
2787                         return -1;
2788                 }
2789         } else {
2790                 /* short packet. Accept only if 802 values are also short */
2791                 if (protolen > ETH_ZLEN) {
2792                         return -1;
2793                 }
2794                 return datalen;
2795         }
2796 }
2797
2798 static int nv_rx_process(struct net_device *dev, int limit)
2799 {
2800         struct fe_priv *np = netdev_priv(dev);
2801         u32 flags;
2802         int rx_work = 0;
2803         struct sk_buff *skb;
2804         int len;
2805
2806         while ((np->get_rx.orig != np->put_rx.orig) &&
2807               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2808                 (rx_work < limit)) {
2809
2810                 /*
2811                  * the packet is for us - immediately tear down the pci mapping.
2812                  * TODO: check if a prefetch of the first cacheline improves
2813                  * the performance.
2814                  */
2815                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2816                                 np->get_rx_ctx->dma_len,
2817                                 PCI_DMA_FROMDEVICE);
2818                 skb = np->get_rx_ctx->skb;
2819                 np->get_rx_ctx->skb = NULL;
2820
2821                 /* look at what we actually got: */
2822                 if (np->desc_ver == DESC_VER_1) {
2823                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2824                                 len = flags & LEN_MASK_V1;
2825                                 if (unlikely(flags & NV_RX_ERROR)) {
2826                                         if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
2827                                                 len = nv_getlen(dev, skb->data, len);
2828                                                 if (len < 0) {
2829                                                         dev_kfree_skb(skb);
2830                                                         goto next_pkt;
2831                                                 }
2832                                         }
2833                                         /* framing errors are soft errors */
2834                                         else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
2835                                                 if (flags & NV_RX_SUBSTRACT1)
2836                                                         len--;
2837                                         }
2838                                         /* the rest are hard errors */
2839                                         else {
2840                                                 if (flags & NV_RX_MISSEDFRAME) {
2841                                                         u64_stats_update_begin(&np->swstats_rx_syncp);
2842                                                         np->stat_rx_missed_errors++;
2843                                                         u64_stats_update_end(&np->swstats_rx_syncp);
2844                                                 }
2845                                                 dev_kfree_skb(skb);
2846                                                 goto next_pkt;
2847                                         }
2848                                 }
2849                         } else {
2850                                 dev_kfree_skb(skb);
2851                                 goto next_pkt;
2852                         }
2853                 } else {
2854                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2855                                 len = flags & LEN_MASK_V2;
2856                                 if (unlikely(flags & NV_RX2_ERROR)) {
2857                                         if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2858                                                 len = nv_getlen(dev, skb->data, len);
2859                                                 if (len < 0) {
2860                                                         dev_kfree_skb(skb);
2861                                                         goto next_pkt;
2862                                                 }
2863                                         }
2864                                         /* framing errors are soft errors */
2865                                         else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2866                                                 if (flags & NV_RX2_SUBSTRACT1)
2867                                                         len--;
2868                                         }
2869                                         /* the rest are hard errors */
2870                                         else {
2871                                                 dev_kfree_skb(skb);
2872                                                 goto next_pkt;
2873                                         }
2874                                 }
2875                                 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2876                                     ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2877                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2878                         } else {
2879                                 dev_kfree_skb(skb);
2880                                 goto next_pkt;
2881                         }
2882                 }
2883                 /* got a valid packet - forward it to the network core */
2884                 skb_put(skb, len);
2885                 skb->protocol = eth_type_trans(skb, dev);
2886                 napi_gro_receive(&np->napi, skb);
2887                 u64_stats_update_begin(&np->swstats_rx_syncp);
2888                 np->stat_rx_packets++;
2889                 np->stat_rx_bytes += len;
2890                 u64_stats_update_end(&np->swstats_rx_syncp);
2891 next_pkt:
2892                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2893                         np->get_rx.orig = np->first_rx.orig;
2894                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2895                         np->get_rx_ctx = np->first_rx_ctx;
2896
2897                 rx_work++;
2898         }
2899
2900         return rx_work;
2901 }
2902
2903 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2904 {
2905         struct fe_priv *np = netdev_priv(dev);
2906         u32 flags;
2907         u32 vlanflags = 0;
2908         int rx_work = 0;
2909         struct sk_buff *skb;
2910         int len;
2911
2912         while ((np->get_rx.ex != np->put_rx.ex) &&
2913               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2914               (rx_work < limit)) {
2915
2916                 /*
2917                  * the packet is for us - immediately tear down the pci mapping.
2918                  * TODO: check if a prefetch of the first cacheline improves
2919                  * the performance.
2920                  */
2921                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2922                                 np->get_rx_ctx->dma_len,
2923                                 PCI_DMA_FROMDEVICE);
2924                 skb = np->get_rx_ctx->skb;
2925                 np->get_rx_ctx->skb = NULL;
2926
2927                 /* look at what we actually got: */
2928                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2929                         len = flags & LEN_MASK_V2;
2930                         if (unlikely(flags & NV_RX2_ERROR)) {
2931                                 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2932                                         len = nv_getlen(dev, skb->data, len);
2933                                         if (len < 0) {
2934                                                 dev_kfree_skb(skb);
2935                                                 goto next_pkt;
2936                                         }
2937                                 }
2938                                 /* framing errors are soft errors */
2939                                 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2940                                         if (flags & NV_RX2_SUBSTRACT1)
2941                                                 len--;
2942                                 }
2943                                 /* the rest are hard errors */
2944                                 else {
2945                                         dev_kfree_skb(skb);
2946                                         goto next_pkt;
2947                                 }
2948                         }
2949
2950                         if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2951                             ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2952                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2953
2954                         /* got a valid packet - forward it to the network core */
2955                         skb_put(skb, len);
2956                         skb->protocol = eth_type_trans(skb, dev);
2957                         prefetch(skb->data);
2958
2959                         vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2960
2961                         /*
2962                          * There's need to check for NETIF_F_HW_VLAN_CTAG_RX
2963                          * here. Even if vlan rx accel is disabled,
2964                          * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
2965                          */
2966                         if (dev->features & NETIF_F_HW_VLAN_CTAG_RX &&
2967                             vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2968                                 u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
2969
2970                                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2971                         }
2972                         napi_gro_receive(&np->napi, skb);
2973                         u64_stats_update_begin(&np->swstats_rx_syncp);
2974                         np->stat_rx_packets++;
2975                         np->stat_rx_bytes += len;
2976                         u64_stats_update_end(&np->swstats_rx_syncp);
2977                 } else {
2978                         dev_kfree_skb(skb);
2979                 }
2980 next_pkt:
2981                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2982                         np->get_rx.ex = np->first_rx.ex;
2983                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2984                         np->get_rx_ctx = np->first_rx_ctx;
2985
2986                 rx_work++;
2987         }
2988
2989         return rx_work;
2990 }
2991
2992 static void set_bufsize(struct net_device *dev)
2993 {
2994         struct fe_priv *np = netdev_priv(dev);
2995
2996         if (dev->mtu <= ETH_DATA_LEN)
2997                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2998         else
2999                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
3000 }
3001
3002 /*
3003  * nv_change_mtu: dev->change_mtu function
3004  * Called with dev_base_lock held for read.
3005  */
3006 static int nv_change_mtu(struct net_device *dev, int new_mtu)
3007 {
3008         struct fe_priv *np = netdev_priv(dev);
3009         int old_mtu;
3010
3011         if (new_mtu < 64 || new_mtu > np->pkt_limit)
3012                 return -EINVAL;
3013
3014         old_mtu = dev->mtu;
3015         dev->mtu = new_mtu;
3016
3017         /* return early if the buffer sizes will not change */
3018         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
3019                 return 0;
3020         if (old_mtu == new_mtu)
3021                 return 0;
3022
3023         /* synchronized against open : rtnl_lock() held by caller */
3024         if (netif_running(dev)) {
3025                 u8 __iomem *base = get_hwbase(dev);
3026                 /*
3027                  * It seems that the nic preloads valid ring entries into an
3028                  * internal buffer. The procedure for flushing everything is
3029                  * guessed, there is probably a simpler approach.
3030                  * Changing the MTU is a rare event, it shouldn't matter.
3031                  */
3032                 nv_disable_irq(dev);
3033                 nv_napi_disable(dev);
3034                 netif_tx_lock_bh(dev);
3035                 netif_addr_lock(dev);
3036                 spin_lock(&np->lock);
3037                 /* stop engines */
3038                 nv_stop_rxtx(dev);
3039                 nv_txrx_reset(dev);
3040                 /* drain rx queue */
3041                 nv_drain_rxtx(dev);
3042                 /* reinit driver view of the rx queue */
3043                 set_bufsize(dev);
3044                 if (nv_init_ring(dev)) {
3045                         if (!np->in_shutdown)
3046                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3047                 }
3048                 /* reinit nic view of the rx queue */
3049                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3050                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3051                 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3052                         base + NvRegRingSizes);
3053                 pci_push(base);
3054                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3055                 pci_push(base);
3056
3057                 /* restart rx engine */
3058                 nv_start_rxtx(dev);
3059                 spin_unlock(&np->lock);
3060                 netif_addr_unlock(dev);
3061                 netif_tx_unlock_bh(dev);
3062                 nv_napi_enable(dev);
3063                 nv_enable_irq(dev);
3064         }
3065         return 0;
3066 }
3067
3068 static void nv_copy_mac_to_hw(struct net_device *dev)
3069 {
3070         u8 __iomem *base = get_hwbase(dev);
3071         u32 mac[2];
3072
3073         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3074                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3075         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3076
3077         writel(mac[0], base + NvRegMacAddrA);
3078         writel(mac[1], base + NvRegMacAddrB);
3079 }
3080
3081 /*
3082  * nv_set_mac_address: dev->set_mac_address function
3083  * Called with rtnl_lock() held.
3084  */
3085 static int nv_set_mac_address(struct net_device *dev, void *addr)
3086 {
3087         struct fe_priv *np = netdev_priv(dev);
3088         struct sockaddr *macaddr = (struct sockaddr *)addr;
3089
3090         if (!is_valid_ether_addr(macaddr->sa_data))
3091                 return -EADDRNOTAVAIL;
3092
3093         /* synchronized against open : rtnl_lock() held by caller */
3094         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
3095
3096         if (netif_running(dev)) {
3097                 netif_tx_lock_bh(dev);
3098                 netif_addr_lock(dev);
3099                 spin_lock_irq(&np->lock);
3100
3101                 /* stop rx engine */
3102                 nv_stop_rx(dev);
3103
3104                 /* set mac address */
3105                 nv_copy_mac_to_hw(dev);
3106
3107                 /* restart rx engine */
3108                 nv_start_rx(dev);
3109                 spin_unlock_irq(&np->lock);
3110                 netif_addr_unlock(dev);
3111                 netif_tx_unlock_bh(dev);
3112         } else {
3113                 nv_copy_mac_to_hw(dev);
3114         }
3115         return 0;
3116 }
3117
3118 /*
3119  * nv_set_multicast: dev->set_multicast function
3120  * Called with netif_tx_lock held.
3121  */
3122 static void nv_set_multicast(struct net_device *dev)
3123 {
3124         struct fe_priv *np = netdev_priv(dev);
3125         u8 __iomem *base = get_hwbase(dev);
3126         u32 addr[2];
3127         u32 mask[2];
3128         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3129
3130         memset(addr, 0, sizeof(addr));
3131         memset(mask, 0, sizeof(mask));
3132
3133         if (dev->flags & IFF_PROMISC) {
3134                 pff |= NVREG_PFF_PROMISC;
3135         } else {
3136                 pff |= NVREG_PFF_MYADDR;
3137
3138                 if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3139                         u32 alwaysOff[2];
3140                         u32 alwaysOn[2];
3141
3142                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3143                         if (dev->flags & IFF_ALLMULTI) {
3144                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3145                         } else {
3146                                 struct netdev_hw_addr *ha;
3147
3148                                 netdev_for_each_mc_addr(ha, dev) {
3149                                         unsigned char *hw_addr = ha->addr;
3150                                         u32 a, b;
3151
3152                                         a = le32_to_cpu(*(__le32 *) hw_addr);
3153                                         b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3154                                         alwaysOn[0] &= a;
3155                                         alwaysOff[0] &= ~a;
3156                                         alwaysOn[1] &= b;
3157                                         alwaysOff[1] &= ~b;
3158                                 }
3159                         }
3160                         addr[0] = alwaysOn[0];
3161                         addr[1] = alwaysOn[1];
3162                         mask[0] = alwaysOn[0] | alwaysOff[0];
3163                         mask[1] = alwaysOn[1] | alwaysOff[1];
3164                 } else {
3165                         mask[0] = NVREG_MCASTMASKA_NONE;
3166                         mask[1] = NVREG_MCASTMASKB_NONE;
3167                 }
3168         }
3169         addr[0] |= NVREG_MCASTADDRA_FORCE;
3170         pff |= NVREG_PFF_ALWAYS;
3171         spin_lock_irq(&np->lock);
3172         nv_stop_rx(dev);
3173         writel(addr[0], base + NvRegMulticastAddrA);
3174         writel(addr[1], base + NvRegMulticastAddrB);
3175         writel(mask[0], base + NvRegMulticastMaskA);
3176         writel(mask[1], base + NvRegMulticastMaskB);
3177         writel(pff, base + NvRegPacketFilterFlags);
3178         nv_start_rx(dev);
3179         spin_unlock_irq(&np->lock);
3180 }
3181
3182 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3183 {
3184         struct fe_priv *np = netdev_priv(dev);
3185         u8 __iomem *base = get_hwbase(dev);
3186
3187         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3188
3189         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3190                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3191                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3192                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3193                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3194                 } else {
3195                         writel(pff, base + NvRegPacketFilterFlags);
3196                 }
3197         }
3198         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3199                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3200                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3201                         u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3202                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3203                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3204                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3205                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3206                                 /* limit the number of tx pause frames to a default of 8 */
3207                                 writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3208                         }
3209                         writel(pause_enable,  base + NvRegTxPauseFrame);
3210                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3211                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3212                 } else {
3213                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3214                         writel(regmisc, base + NvRegMisc1);
3215                 }
3216         }
3217 }
3218
3219 static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3220 {
3221         struct fe_priv *np = netdev_priv(dev);
3222         u8 __iomem *base = get_hwbase(dev);
3223         u32 phyreg, txreg;
3224         int mii_status;
3225
3226         np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3227         np->duplex = duplex;
3228
3229         /* see if gigabit phy */
3230         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3231         if (mii_status & PHY_GIGABIT) {
3232                 np->gigabit = PHY_GIGABIT;
3233                 phyreg = readl(base + NvRegSlotTime);
3234                 phyreg &= ~(0x3FF00);
3235                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3236                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3237                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3238                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3239                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3240                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3241                 writel(phyreg, base + NvRegSlotTime);
3242         }
3243
3244         phyreg = readl(base + NvRegPhyInterface);
3245         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3246         if (np->duplex == 0)
3247                 phyreg |= PHY_HALF;
3248         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3249                 phyreg |= PHY_100;
3250         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3251                                                         NVREG_LINKSPEED_1000)
3252                 phyreg |= PHY_1000;
3253         writel(phyreg, base + NvRegPhyInterface);
3254
3255         if (phyreg & PHY_RGMII) {
3256                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3257                                                         NVREG_LINKSPEED_1000)
3258                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3259                 else
3260                         txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3261         } else {
3262                 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3263         }
3264         writel(txreg, base + NvRegTxDeferral);
3265
3266         if (np->desc_ver == DESC_VER_1) {
3267                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3268         } else {
3269                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3270                                          NVREG_LINKSPEED_1000)
3271                         txreg = NVREG_TX_WM_DESC2_3_1000;
3272                 else
3273                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3274         }
3275         writel(txreg, base + NvRegTxWatermark);
3276
3277         writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3278                         base + NvRegMisc1);
3279         pci_push(base);
3280         writel(np->linkspeed, base + NvRegLinkSpeed);
3281         pci_push(base);
3282
3283         return;
3284 }
3285
3286 /**
3287  * nv_update_linkspeed - Setup the MAC according to the link partner
3288  * @dev: Network device to be configured
3289  *
3290  * The function queries the PHY and checks if there is a link partner.
3291  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3292  * set to 10 MBit HD.
3293  *
3294  * The function returns 0 if there is no link partner and 1 if there is
3295  * a good link partner.
3296  */
3297 static int nv_update_linkspeed(struct net_device *dev)
3298 {
3299         struct fe_priv *np = netdev_priv(dev);
3300         u8 __iomem *base = get_hwbase(dev);
3301         int adv = 0;
3302         int lpa = 0;
3303         int adv_lpa, adv_pause, lpa_pause;
3304         int newls = np->linkspeed;
3305         int newdup = np->duplex;
3306         int mii_status;
3307         u32 bmcr;
3308         int retval = 0;
3309         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3310         u32 txrxFlags = 0;
3311         u32 phy_exp;
3312
3313         /* If device loopback is enabled, set carrier on and enable max link
3314          * speed.
3315          */
3316         bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3317         if (bmcr & BMCR_LOOPBACK) {
3318                 if (netif_running(dev)) {
3319                         nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3320                         if (!netif_carrier_ok(dev))
3321                                 netif_carrier_on(dev);
3322                 }
3323                 return 1;
3324         }
3325
3326         /* BMSR_LSTATUS is latched, read it twice:
3327          * we want the current value.
3328          */
3329         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3330         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3331
3332         if (!(mii_status & BMSR_LSTATUS)) {
3333                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3334                 newdup = 0;
3335                 retval = 0;
3336                 goto set_speed;
3337         }
3338
3339         if (np->autoneg == 0) {
3340                 if (np->fixed_mode & LPA_100FULL) {
3341                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3342                         newdup = 1;
3343                 } else if (np->fixed_mode & LPA_100HALF) {
3344                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3345                         newdup = 0;
3346                 } else if (np->fixed_mode & LPA_10FULL) {
3347                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3348                         newdup = 1;
3349                 } else {
3350                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3351                         newdup = 0;
3352                 }
3353                 retval = 1;
3354                 goto set_speed;
3355         }
3356         /* check auto negotiation is complete */
3357         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3358                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3359                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3360                 newdup = 0;
3361                 retval = 0;
3362                 goto set_speed;
3363         }
3364
3365         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3366         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3367
3368         retval = 1;
3369         if (np->gigabit == PHY_GIGABIT) {
3370                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3371                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3372
3373                 if ((control_1000 & ADVERTISE_1000FULL) &&
3374                         (status_1000 & LPA_1000FULL)) {
3375                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3376                         newdup = 1;
3377                         goto set_speed;
3378                 }
3379         }
3380
3381         /* FIXME: handle parallel detection properly */
3382         adv_lpa = lpa & adv;
3383         if (adv_lpa & LPA_100FULL) {
3384                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3385                 newdup = 1;
3386         } else if (adv_lpa & LPA_100HALF) {
3387                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3388                 newdup = 0;
3389         } else if (adv_lpa & LPA_10FULL) {
3390                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3391                 newdup = 1;
3392         } else if (adv_lpa & LPA_10HALF) {
3393                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3394                 newdup = 0;
3395         } else {
3396                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3397                 newdup = 0;
3398         }
3399
3400 set_speed:
3401         if (np->duplex == newdup && np->linkspeed == newls)
3402                 return retval;
3403
3404         np->duplex = newdup;
3405         np->linkspeed = newls;
3406
3407         /* The transmitter and receiver must be restarted for safe update */
3408         if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3409                 txrxFlags |= NV_RESTART_TX;
3410                 nv_stop_tx(dev);
3411         }
3412         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3413                 txrxFlags |= NV_RESTART_RX;
3414                 nv_stop_rx(dev);
3415         }
3416
3417         if (np->gigabit == PHY_GIGABIT) {
3418                 phyreg = readl(base + NvRegSlotTime);
3419                 phyreg &= ~(0x3FF00);
3420                 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3421                     ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3422                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3423                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3424                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3425                 writel(phyreg, base + NvRegSlotTime);
3426         }
3427
3428         phyreg = readl(base + NvRegPhyInterface);
3429         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3430         if (np->duplex == 0)
3431                 phyreg |= PHY_HALF;
3432         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3433                 phyreg |= PHY_100;
3434         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3435                 phyreg |= PHY_1000;
3436         writel(phyreg, base + NvRegPhyInterface);
3437
3438         phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3439         if (phyreg & PHY_RGMII) {
3440                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3441                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3442                 } else {
3443                         if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3444                                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3445                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3446                                 else
3447                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3448                         } else {
3449                                 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3450                         }
3451                 }
3452         } else {
3453                 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3454                         txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3455                 else
3456                         txreg = NVREG_TX_DEFERRAL_DEFAULT;
3457         }
3458         writel(txreg, base + NvRegTxDeferral);
3459
3460         if (np->desc_ver == DESC_VER_1) {
3461                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3462         } else {
3463                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3464                         txreg = NVREG_TX_WM_DESC2_3_1000;
3465                 else
3466                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3467         }
3468         writel(txreg, base + NvRegTxWatermark);
3469
3470         writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3471                 base + NvRegMisc1);
3472         pci_push(base);
3473         writel(np->linkspeed, base + NvRegLinkSpeed);
3474         pci_push(base);
3475
3476         pause_flags = 0;
3477         /* setup pause frame */
3478         if (netif_running(dev) && (np->duplex != 0)) {
3479                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3480                         adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3481                         lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3482
3483                         switch (adv_pause) {
3484                         case ADVERTISE_PAUSE_CAP:
3485                                 if (lpa_pause & LPA_PAUSE_CAP) {
3486                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3487                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3488                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3489                                 }
3490                                 break;
3491                         case ADVERTISE_PAUSE_ASYM:
3492                                 if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3493                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3494                                 break;
3495                         case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3496                                 if (lpa_pause & LPA_PAUSE_CAP) {
3497                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3498                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3499                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3500                                 }
3501                                 if (lpa_pause == LPA_PAUSE_ASYM)
3502                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3503                                 break;
3504                         }
3505                 } else {
3506                         pause_flags = np->pause_flags;
3507                 }
3508         }
3509         nv_update_pause(dev, pause_flags);
3510
3511         if (txrxFlags & NV_RESTART_TX)
3512                 nv_start_tx(dev);
3513         if (txrxFlags & NV_RESTART_RX)
3514                 nv_start_rx(dev);
3515
3516         return retval;
3517 }
3518
3519 static void nv_linkchange(struct net_device *dev)
3520 {
3521         if (nv_update_linkspeed(dev)) {
3522                 if (!netif_carrier_ok(dev)) {
3523                         netif_carrier_on(dev);
3524                         netdev_info(dev, "link up\n");
3525                         nv_txrx_gate(dev, false);
3526                         nv_start_rx(dev);
3527                 }
3528         } else {
3529                 if (netif_carrier_ok(dev)) {
3530                         netif_carrier_off(dev);
3531                         netdev_info(dev, "link down\n");
3532                         nv_txrx_gate(dev, true);
3533                         nv_stop_rx(dev);
3534                 }
3535         }
3536 }
3537
3538 static void nv_link_irq(struct net_device *dev)
3539 {
3540         u8 __iomem *base = get_hwbase(dev);
3541         u32 miistat;
3542
3543         miistat = readl(base + NvRegMIIStatus);
3544         writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3545
3546         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3547                 nv_linkchange(dev);
3548 }
3549
3550 static void nv_msi_workaround(struct fe_priv *np)
3551 {
3552
3553         /* Need to toggle the msi irq mask within the ethernet device,
3554          * otherwise, future interrupts will not be detected.
3555          */
3556         if (np->msi_flags & NV_MSI_ENABLED) {
3557                 u8 __iomem *base = np->base;
3558
3559                 writel(0, base + NvRegMSIIrqMask);
3560                 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3561         }
3562 }
3563
3564 static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3565 {
3566         struct fe_priv *np = netdev_priv(dev);
3567
3568         if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3569                 if (total_work > NV_DYNAMIC_THRESHOLD) {
3570                         /* transition to poll based interrupts */
3571                         np->quiet_count = 0;
3572                         if (np->irqmask != NVREG_IRQMASK_CPU) {
3573                                 np->irqmask = NVREG_IRQMASK_CPU;
3574                                 return 1;
3575                         }
3576                 } else {
3577                         if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3578                                 np->quiet_count++;
3579                         } else {
3580                                 /* reached a period of low activity, switch
3581                                    to per tx/rx packet interrupts */
3582                                 if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3583                                         np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3584                                         return 1;
3585                                 }
3586                         }
3587                 }
3588         }
3589         return 0;
3590 }
3591
3592 static irqreturn_t nv_nic_irq(int foo, void *data)
3593 {
3594         struct net_device *dev = (struct net_device *) data;
3595         struct fe_priv *np = netdev_priv(dev);
3596         u8 __iomem *base = get_hwbase(dev);
3597
3598         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3599                 np->events = readl(base + NvRegIrqStatus);
3600                 writel(np->events, base + NvRegIrqStatus);
3601         } else {
3602                 np->events = readl(base + NvRegMSIXIrqStatus);
3603                 writel(np->events, base + NvRegMSIXIrqStatus);
3604         }
3605         if (!(np->events & np->irqmask))
3606                 return IRQ_NONE;
3607
3608         nv_msi_workaround(np);
3609
3610         if (napi_schedule_prep(&np->napi)) {
3611                 /*
3612                  * Disable further irq's (msix not enabled with napi)
3613                  */
3614                 writel(0, base + NvRegIrqMask);
3615                 __napi_schedule(&np->napi);
3616         }
3617
3618         return IRQ_HANDLED;
3619 }
3620
3621 /* All _optimized functions are used to help increase performance
3622  * (reduce CPU and increase throughput). They use descripter version 3,
3623  * compiler directives, and reduce memory accesses.
3624  */
3625 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3626 {
3627         struct net_device *dev = (struct net_device *) data;
3628         struct fe_priv *np = netdev_priv(dev);
3629         u8 __iomem *base = get_hwbase(dev);
3630
3631         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3632                 np->events = readl(base + NvRegIrqStatus);
3633                 writel(np->events, base + NvRegIrqStatus);
3634         } else {
3635                 np->events = readl(base + NvRegMSIXIrqStatus);
3636                 writel(np->events, base + NvRegMSIXIrqStatus);
3637         }
3638         if (!(np->events & np->irqmask))
3639                 return IRQ_NONE;
3640
3641         nv_msi_workaround(np);
3642
3643         if (napi_schedule_prep(&np->napi)) {
3644                 /*
3645                  * Disable further irq's (msix not enabled with napi)
3646                  */
3647                 writel(0, base + NvRegIrqMask);
3648                 __napi_schedule(&np->napi);
3649         }
3650
3651         return IRQ_HANDLED;
3652 }
3653
3654 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3655 {
3656         struct net_device *dev = (struct net_device *) data;
3657         struct fe_priv *np = netdev_priv(dev);
3658         u8 __iomem *base = get_hwbase(dev);
3659         u32 events;
3660         int i;
3661         unsigned long flags;
3662
3663         for (i = 0;; i++) {
3664                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3665                 writel(events, base + NvRegMSIXIrqStatus);
3666                 netdev_dbg(dev, "tx irq events: %08x\n", events);
3667                 if (!(events & np->irqmask))
3668                         break;
3669
3670                 spin_lock_irqsave(&np->lock, flags);
3671                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3672                 spin_unlock_irqrestore(&np->lock, flags);
3673
3674                 if (unlikely(i > max_interrupt_work)) {
3675                         spin_lock_irqsave(&np->lock, flags);
3676                         /* disable interrupts on the nic */
3677                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3678                         pci_push(base);
3679
3680                         if (!np->in_shutdown) {
3681                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3682                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3683                         }
3684                         spin_unlock_irqrestore(&np->lock, flags);
3685                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3686                                    __func__, i);
3687                         break;
3688                 }
3689
3690         }
3691
3692         return IRQ_RETVAL(i);
3693 }
3694
3695 static int nv_napi_poll(struct napi_struct *napi, int budget)
3696 {
3697         struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3698         struct net_device *dev = np->dev;
3699         u8 __iomem *base = get_hwbase(dev);
3700         unsigned long flags;
3701         int retcode;
3702         int rx_count, tx_work = 0, rx_work = 0;
3703
3704         do {
3705                 if (!nv_optimized(np)) {
3706                         spin_lock_irqsave(&np->lock, flags);
3707                         tx_work += nv_tx_done(dev, np->tx_ring_size);
3708                         spin_unlock_irqrestore(&np->lock, flags);
3709
3710                         rx_count = nv_rx_process(dev, budget - rx_work);
3711                         retcode = nv_alloc_rx(dev);
3712                 } else {
3713                         spin_lock_irqsave(&np->lock, flags);
3714                         tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3715                         spin_unlock_irqrestore(&np->lock, flags);
3716
3717                         rx_count = nv_rx_process_optimized(dev,
3718                             budget - rx_work);
3719                         retcode = nv_alloc_rx_optimized(dev);
3720                 }
3721         } while (retcode == 0 &&
3722                  rx_count > 0 && (rx_work += rx_count) < budget);
3723
3724         if (retcode) {
3725                 spin_lock_irqsave(&np->lock, flags);
3726                 if (!np->in_shutdown)
3727                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3728                 spin_unlock_irqrestore(&np->lock, flags);
3729         }
3730
3731         nv_change_interrupt_mode(dev, tx_work + rx_work);
3732
3733         if (unlikely(np->events & NVREG_IRQ_LINK)) {
3734                 spin_lock_irqsave(&np->lock, flags);
3735                 nv_link_irq(dev);
3736                 spin_unlock_irqrestore(&np->lock, flags);
3737         }
3738         if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3739                 spin_lock_irqsave(&np->lock, flags);
3740                 nv_linkchange(dev);
3741                 spin_unlock_irqrestore(&np->lock, flags);
3742                 np->link_timeout = jiffies + LINK_TIMEOUT;
3743         }
3744         if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3745                 spin_lock_irqsave(&np->lock, flags);
3746                 if (!np->in_shutdown) {
3747                         np->nic_poll_irq = np->irqmask;
3748                         np->recover_error = 1;
3749                         mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3750                 }
3751                 spin_unlock_irqrestore(&np->lock, flags);
3752                 napi_complete(napi);
3753                 return rx_work;
3754         }
3755
3756         if (rx_work < budget) {
3757                 /* re-enable interrupts
3758                    (msix not enabled in napi) */
3759                 napi_complete(napi);
3760
3761                 writel(np->irqmask, base + NvRegIrqMask);
3762         }
3763         return rx_work;
3764 }
3765
3766 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3767 {
3768         struct net_device *dev = (struct net_device *) data;
3769         struct fe_priv *np = netdev_priv(dev);
3770         u8 __iomem *base = get_hwbase(dev);
3771         u32 events;
3772         int i;
3773         unsigned long flags;
3774
3775         for (i = 0;; i++) {
3776                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3777                 writel(events, base + NvRegMSIXIrqStatus);
3778                 netdev_dbg(dev, "rx irq events: %08x\n", events);
3779                 if (!(events & np->irqmask))
3780                         break;
3781
3782                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3783                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3784                                 spin_lock_irqsave(&np->lock, flags);
3785                                 if (!np->in_shutdown)
3786                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3787                                 spin_unlock_irqrestore(&np->lock, flags);
3788                         }
3789                 }
3790
3791                 if (unlikely(i > max_interrupt_work)) {
3792                         spin_lock_irqsave(&np->lock, flags);
3793                         /* disable interrupts on the nic */
3794                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3795                         pci_push(base);
3796
3797                         if (!np->in_shutdown) {
3798                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3799                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3800                         }
3801                         spin_unlock_irqrestore(&np->lock, flags);
3802                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3803                                    __func__, i);
3804                         break;
3805                 }
3806         }
3807
3808         return IRQ_RETVAL(i);
3809 }
3810
3811 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3812 {
3813         struct net_device *dev = (struct net_device *) data;
3814         struct fe_priv *np = netdev_priv(dev);
3815         u8 __iomem *base = get_hwbase(dev);
3816         u32 events;
3817         int i;
3818         unsigned long flags;
3819
3820         for (i = 0;; i++) {
3821                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3822                 writel(events, base + NvRegMSIXIrqStatus);
3823                 netdev_dbg(dev, "irq events: %08x\n", events);
3824                 if (!(events & np->irqmask))
3825                         break;
3826
3827                 /* check tx in case we reached max loop limit in tx isr */
3828                 spin_lock_irqsave(&np->lock, flags);
3829                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3830                 spin_unlock_irqrestore(&np->lock, flags);
3831
3832                 if (events & NVREG_IRQ_LINK) {
3833                         spin_lock_irqsave(&np->lock, flags);
3834                         nv_link_irq(dev);
3835                         spin_unlock_irqrestore(&np->lock, flags);
3836                 }
3837                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3838                         spin_lock_irqsave(&np->lock, flags);
3839                         nv_linkchange(dev);
3840                         spin_unlock_irqrestore(&np->lock, flags);
3841                         np->link_timeout = jiffies + LINK_TIMEOUT;
3842                 }
3843                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3844                         spin_lock_irqsave(&np->lock, flags);
3845                         /* disable interrupts on the nic */
3846                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3847                         pci_push(base);
3848
3849                         if (!np->in_shutdown) {
3850                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3851                                 np->recover_error = 1;
3852                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3853                         }
3854                         spin_unlock_irqrestore(&np->lock, flags);
3855                         break;
3856                 }
3857                 if (unlikely(i > max_interrupt_work)) {
3858                         spin_lock_irqsave(&np->lock, flags);
3859                         /* disable interrupts on the nic */
3860                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3861                         pci_push(base);
3862
3863                         if (!np->in_shutdown) {
3864                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3865                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3866                         }
3867                         spin_unlock_irqrestore(&np->lock, flags);
3868                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3869                                    __func__, i);
3870                         break;
3871                 }
3872
3873         }
3874
3875         return IRQ_RETVAL(i);
3876 }
3877
3878 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3879 {
3880         struct net_device *dev = (struct net_device *) data;
3881         struct fe_priv *np = netdev_priv(dev);
3882         u8 __iomem *base = get_hwbase(dev);
3883         u32 events;
3884
3885         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3886                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3887                 writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3888         } else {
3889                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3890                 writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3891         }
3892         pci_push(base);
3893         if (!(events & NVREG_IRQ_TIMER))
3894                 return IRQ_RETVAL(0);
3895
3896         nv_msi_workaround(np);
3897
3898         spin_lock(&np->lock);
3899         np->intr_test = 1;
3900         spin_unlock(&np->lock);
3901
3902         return IRQ_RETVAL(1);
3903 }
3904
3905 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3906 {
3907         u8 __iomem *base = get_hwbase(dev);
3908         int i;
3909         u32 msixmap = 0;
3910
3911         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3912          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3913          * the remaining 8 interrupts.
3914          */
3915         for (i = 0; i < 8; i++) {
3916                 if ((irqmask >> i) & 0x1)
3917                         msixmap |= vector << (i << 2);
3918         }
3919         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3920
3921         msixmap = 0;
3922         for (i = 0; i < 8; i++) {
3923                 if ((irqmask >> (i + 8)) & 0x1)
3924                         msixmap |= vector << (i << 2);
3925         }
3926         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3927 }
3928
3929 static int nv_request_irq(struct net_device *dev, int intr_test)
3930 {
3931         struct fe_priv *np = get_nvpriv(dev);
3932         u8 __iomem *base = get_hwbase(dev);
3933         int ret;
3934         int i;
3935         irqreturn_t (*handler)(int foo, void *data);
3936
3937         if (intr_test) {
3938                 handler = nv_nic_irq_test;
3939         } else {
3940                 if (nv_optimized(np))
3941                         handler = nv_nic_irq_optimized;
3942                 else
3943                         handler = nv_nic_irq;
3944         }
3945
3946         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3947                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3948                         np->msi_x_entry[i].entry = i;
3949                 ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK));
3950                 if (ret == 0) {
3951                         np->msi_flags |= NV_MSI_X_ENABLED;
3952                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3953                                 /* Request irq for rx handling */
3954                                 sprintf(np->name_rx, "%s-rx", dev->name);
3955                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3956                                                   nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev);
3957                                 if (ret) {
3958                                         netdev_info(dev,
3959                                                     "request_irq failed for rx %d\n",
3960                                                     ret);
3961                                         pci_disable_msix(np->pci_dev);
3962                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3963                                         goto out_err;
3964                                 }
3965                                 /* Request irq for tx handling */
3966                                 sprintf(np->name_tx, "%s-tx", dev->name);
3967                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3968                                                   nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev);
3969                                 if (ret) {
3970                                         netdev_info(dev,
3971                                                     "request_irq failed for tx %d\n",
3972                                                     ret);
3973                                         pci_disable_msix(np->pci_dev);
3974                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3975                                         goto out_free_rx;
3976                                 }
3977                                 /* Request irq for link and timer handling */
3978                                 sprintf(np->name_other, "%s-other", dev->name);
3979                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3980                                                   nv_nic_irq_other, IRQF_SHARED, np->name_other, dev);
3981                                 if (ret) {
3982                                         netdev_info(dev,
3983                                                     "request_irq failed for link %d\n",
3984                                                     ret);
3985                                         pci_disable_msix(np->pci_dev);
3986                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3987                                         goto out_free_tx;
3988                                 }
3989                                 /* map interrupts to their respective vector */
3990                                 writel(0, base + NvRegMSIXMap0);
3991                                 writel(0, base + NvRegMSIXMap1);
3992                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3993                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3994                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3995                         } else {
3996                                 /* Request irq for all interrupts */
3997                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector,
3998                                                   handler, IRQF_SHARED, dev->name, dev);
3999                                 if (ret) {
4000                                         netdev_info(dev,
4001                                                     "request_irq failed %d\n",
4002                                                     ret);
4003                                         pci_disable_msix(np->pci_dev);
4004                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
4005                                         goto out_err;
4006                                 }
4007
4008                                 /* map interrupts to vector 0 */
4009                                 writel(0, base + NvRegMSIXMap0);
4010                                 writel(0, base + NvRegMSIXMap1);
4011                         }
4012                         netdev_info(dev, "MSI-X enabled\n");
4013                         return 0;
4014                 }
4015         }
4016         if (np->msi_flags & NV_MSI_CAPABLE) {
4017                 ret = pci_enable_msi(np->pci_dev);
4018                 if (ret == 0) {
4019                         np->msi_flags |= NV_MSI_ENABLED;
4020                         ret = request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev);
4021                         if (ret) {
4022                                 netdev_info(dev, "request_irq failed %d\n",
4023                                             ret);
4024                                 pci_disable_msi(np->pci_dev);
4025                                 np->msi_flags &= ~NV_MSI_ENABLED;
4026                                 goto out_err;
4027                         }
4028
4029                         /* map interrupts to vector 0 */
4030                         writel(0, base + NvRegMSIMap0);
4031                         writel(0, base + NvRegMSIMap1);
4032                         /* enable msi vector 0 */
4033                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
4034                         netdev_info(dev, "MSI enabled\n");
4035                         return 0;
4036                 }
4037         }
4038
4039         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
4040                 goto out_err;
4041
4042         return 0;
4043 out_free_tx:
4044         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4045 out_free_rx:
4046         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4047 out_err:
4048         return 1;
4049 }
4050
4051 static void nv_free_irq(struct net_device *dev)
4052 {
4053         struct fe_priv *np = get_nvpriv(dev);
4054         int i;
4055
4056         if (np->msi_flags & NV_MSI_X_ENABLED) {
4057                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4058                         free_irq(np->msi_x_entry[i].vector, dev);
4059                 pci_disable_msix(np->pci_dev);
4060                 np->msi_flags &= ~NV_MSI_X_ENABLED;
4061         } else {
4062                 free_irq(np->pci_dev->irq, dev);
4063                 if (np->msi_flags & NV_MSI_ENABLED) {
4064                         pci_disable_msi(np->pci_dev);
4065                         np->msi_flags &= ~NV_MSI_ENABLED;
4066                 }
4067         }
4068 }
4069
4070 static void nv_do_nic_poll(unsigned long data)
4071 {
4072         struct net_device *dev = (struct net_device *) data;
4073         struct fe_priv *np = netdev_priv(dev);
4074         u8 __iomem *base = get_hwbase(dev);
4075         u32 mask = 0;
4076
4077         /*
4078          * First disable irq(s) and then
4079          * reenable interrupts on the nic, we have to do this before calling
4080          * nv_nic_irq because that may decide to do otherwise
4081          */
4082
4083         if (!using_multi_irqs(dev)) {
4084                 if (np->msi_flags & NV_MSI_X_ENABLED)
4085                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4086                 else
4087                         disable_irq_lockdep(np->pci_dev->irq);
4088                 mask = np->irqmask;
4089         } else {
4090                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4091                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4092                         mask |= NVREG_IRQ_RX_ALL;
4093                 }
4094                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4095                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4096                         mask |= NVREG_IRQ_TX_ALL;
4097                 }
4098                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4099                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4100                         mask |= NVREG_IRQ_OTHER;
4101                 }
4102         }
4103         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
4104
4105         if (np->recover_error) {
4106                 np->recover_error = 0;
4107                 netdev_info(dev, "MAC in recoverable error state\n");
4108                 if (netif_running(dev)) {
4109                         netif_tx_lock_bh(dev);
4110                         netif_addr_lock(dev);
4111                         spin_lock(&np->lock);
4112                         /* stop engines */
4113                         nv_stop_rxtx(dev);
4114                         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4115                                 nv_mac_reset(dev);
4116                         nv_txrx_reset(dev);
4117                         /* drain rx queue */
4118                         nv_drain_rxtx(dev);
4119                         /* reinit driver view of the rx queue */
4120                         set_bufsize(dev);
4121                         if (nv_init_ring(dev)) {
4122                                 if (!np->in_shutdown)
4123                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4124                         }
4125                         /* reinit nic view of the rx queue */
4126                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4127                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4128                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4129                                 base + NvRegRingSizes);
4130                         pci_push(base);
4131                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4132                         pci_push(base);
4133                         /* clear interrupts */
4134                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4135                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4136                         else
4137                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4138
4139                         /* restart rx engine */
4140                         nv_start_rxtx(dev);
4141                         spin_unlock(&np->lock);
4142                         netif_addr_unlock(dev);
4143                         netif_tx_unlock_bh(dev);
4144                 }
4145         }
4146
4147         writel(mask, base + NvRegIrqMask);
4148         pci_push(base);
4149
4150         if (!using_multi_irqs(dev)) {
4151                 np->nic_poll_irq = 0;
4152                 if (nv_optimized(np))
4153                         nv_nic_irq_optimized(0, dev);
4154                 else
4155                         nv_nic_irq(0, dev);
4156                 if (np->msi_flags & NV_MSI_X_ENABLED)
4157                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4158                 else
4159                         enable_irq_lockdep(np->pci_dev->irq);
4160         } else {
4161                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4162                         np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4163                         nv_nic_irq_rx(0, dev);
4164                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4165                 }
4166                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4167                         np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4168                         nv_nic_irq_tx(0, dev);
4169                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4170                 }
4171                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4172                         np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4173                         nv_nic_irq_other(0, dev);
4174                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4175                 }
4176         }
4177
4178 }
4179
4180 #ifdef CONFIG_NET_POLL_CONTROLLER
4181 static void nv_poll_controller(struct net_device *dev)
4182 {
4183         nv_do_nic_poll((unsigned long) dev);
4184 }
4185 #endif
4186
4187 static void nv_do_stats_poll(unsigned long data)
4188         __acquires(&netdev_priv(dev)->hwstats_lock)
4189         __releases(&netdev_priv(dev)->hwstats_lock)
4190 {
4191         struct net_device *dev = (struct net_device *) data;
4192         struct fe_priv *np = netdev_priv(dev);
4193
4194         /* If lock is currently taken, the stats are being refreshed
4195          * and hence fresh enough */
4196         if (spin_trylock(&np->hwstats_lock)) {
4197                 nv_update_stats(dev);
4198                 spin_unlock(&np->hwstats_lock);
4199         }
4200
4201         if (!np->in_shutdown)
4202                 mod_timer(&np->stats_poll,
4203                         round_jiffies(jiffies + STATS_INTERVAL));
4204 }
4205
4206 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4207 {
4208         struct fe_priv *np = netdev_priv(dev);
4209         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4210         strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4211         strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4212 }
4213
4214 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4215 {
4216         struct fe_priv *np = netdev_priv(dev);
4217         wolinfo->supported = WAKE_MAGIC;
4218
4219         spin_lock_irq(&np->lock);
4220         if (np->wolenabled)
4221                 wolinfo->wolopts = WAKE_MAGIC;
4222         spin_unlock_irq(&np->lock);
4223 }
4224
4225 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4226 {
4227         struct fe_priv *np = netdev_priv(dev);
4228         u8 __iomem *base = get_hwbase(dev);
4229         u32 flags = 0;
4230
4231         if (wolinfo->wolopts == 0) {
4232                 np->wolenabled = 0;
4233         } else if (wolinfo->wolopts & WAKE_MAGIC) {
4234                 np->wolenabled = 1;
4235                 flags = NVREG_WAKEUPFLAGS_ENABLE;
4236         }
4237         if (netif_running(dev)) {
4238                 spin_lock_irq(&np->lock);
4239                 writel(flags, base + NvRegWakeUpFlags);
4240                 spin_unlock_irq(&np->lock);
4241         }
4242         device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4243         return 0;
4244 }
4245
4246 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4247 {
4248         struct fe_priv *np = netdev_priv(dev);
4249         u32 speed;
4250         int adv;
4251
4252         spin_lock_irq(&np->lock);
4253         ecmd->port = PORT_MII;
4254         if (!netif_running(dev)) {
4255                 /* We do not track link speed / duplex setting if the
4256                  * interface is disabled. Force a link check */
4257                 if (nv_update_linkspeed(dev)) {
4258                         if (!netif_carrier_ok(dev))
4259                                 netif_carrier_on(dev);
4260                 } else {
4261                         if (netif_carrier_ok(dev))
4262                                 netif_carrier_off(dev);
4263                 }
4264         }
4265
4266         if (netif_carrier_ok(dev)) {
4267                 switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4268                 case NVREG_LINKSPEED_10:
4269                         speed = SPEED_10;
4270                         break;
4271                 case NVREG_LINKSPEED_100:
4272                         speed = SPEED_100;
4273                         break;
4274                 case NVREG_LINKSPEED_1000:
4275                         speed = SPEED_1000;
4276                         break;
4277                 default:
4278                         speed = -1;
4279                         break;
4280                 }
4281                 ecmd->duplex = DUPLEX_HALF;
4282                 if (np->duplex)
4283                         ecmd->duplex = DUPLEX_FULL;
4284         } else {
4285                 speed = -1;
4286                 ecmd->duplex = -1;
4287         }
4288         ethtool_cmd_speed_set(ecmd, speed);
4289         ecmd->autoneg = np->autoneg;
4290
4291         ecmd->advertising = ADVERTISED_MII;
4292         if (np->autoneg) {
4293                 ecmd->advertising |= ADVERTISED_Autoneg;
4294                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4295                 if (adv & ADVERTISE_10HALF)
4296                         ecmd->advertising |= ADVERTISED_10baseT_Half;
4297                 if (adv & ADVERTISE_10FULL)
4298                         ecmd->advertising |= ADVERTISED_10baseT_Full;
4299                 if (adv & ADVERTISE_100HALF)
4300                         ecmd->advertising |= ADVERTISED_100baseT_Half;
4301                 if (adv & ADVERTISE_100FULL)
4302                         ecmd->advertising |= ADVERTISED_100baseT_Full;
4303                 if (np->gigabit == PHY_GIGABIT) {
4304                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4305                         if (adv & ADVERTISE_1000FULL)
4306                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4307                 }
4308         }
4309         ecmd->supported = (SUPPORTED_Autoneg |
4310                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4311                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4312                 SUPPORTED_MII);
4313         if (np->gigabit == PHY_GIGABIT)
4314                 ecmd->supported |= SUPPORTED_1000baseT_Full;
4315
4316         ecmd->phy_address = np->phyaddr;
4317         ecmd->transceiver = XCVR_EXTERNAL;
4318
4319         /* ignore maxtxpkt, maxrxpkt for now */
4320         spin_unlock_irq(&np->lock);
4321         return 0;
4322 }
4323
4324 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4325 {
4326         struct fe_priv *np = netdev_priv(dev);
4327         u32 speed = ethtool_cmd_speed(ecmd);
4328
4329         if (ecmd->port != PORT_MII)
4330                 return -EINVAL;
4331         if (ecmd->transceiver != XCVR_EXTERNAL)
4332                 return -EINVAL;
4333         if (ecmd->phy_address != np->phyaddr) {
4334                 /* TODO: support switching between multiple phys. Should be
4335                  * trivial, but not enabled due to lack of test hardware. */
4336                 return -EINVAL;
4337         }
4338         if (ecmd->autoneg == AUTONEG_ENABLE) {
4339                 u32 mask;
4340
4341                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4342                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4343                 if (np->gigabit == PHY_GIGABIT)
4344                         mask |= ADVERTISED_1000baseT_Full;
4345
4346                 if ((ecmd->advertising & mask) == 0)
4347                         return -EINVAL;
4348
4349         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4350                 /* Note: autonegotiation disable, speed 1000 intentionally
4351                  * forbidden - no one should need that. */
4352
4353                 if (speed != SPEED_10 && speed != SPEED_100)
4354                         return -EINVAL;
4355                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4356                         return -EINVAL;
4357         } else {
4358                 return -EINVAL;
4359         }
4360
4361         netif_carrier_off(dev);
4362         if (netif_running(dev)) {
4363                 unsigned long flags;
4364
4365                 nv_disable_irq(dev);
4366                 netif_tx_lock_bh(dev);
4367                 netif_addr_lock(dev);
4368                 /* with plain spinlock lockdep complains */
4369                 spin_lock_irqsave(&np->lock, flags);
4370                 /* stop engines */
4371                 /* FIXME:
4372                  * this can take some time, and interrupts are disabled
4373                  * due to spin_lock_irqsave, but let's hope no daemon
4374                  * is going to change the settings very often...
4375                  * Worst case:
4376                  * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4377                  * + some minor delays, which is up to a second approximately
4378                  */
4379                 nv_stop_rxtx(dev);
4380                 spin_unlock_irqrestore(&np->lock, flags);
4381                 netif_addr_unlock(dev);
4382                 netif_tx_unlock_bh(dev);
4383         }
4384
4385         if (ecmd->autoneg == AUTONEG_ENABLE) {
4386                 int adv, bmcr;
4387
4388                 np->autoneg = 1;
4389
4390                 /* advertise only what has been requested */
4391                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4392                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4393                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4394                         adv |= ADVERTISE_10HALF;
4395                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4396                         adv |= ADVERTISE_10FULL;
4397                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4398                         adv |= ADVERTISE_100HALF;
4399                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4400                         adv |= ADVERTISE_100FULL;
4401                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisements but disable tx pause */
4402                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4403                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4404                         adv |=  ADVERTISE_PAUSE_ASYM;
4405                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4406
4407                 if (np->gigabit == PHY_GIGABIT) {
4408                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4409                         adv &= ~ADVERTISE_1000FULL;
4410                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4411                                 adv |= ADVERTISE_1000FULL;
4412                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4413                 }
4414
4415                 if (netif_running(dev))
4416                         netdev_info(dev, "link down\n");
4417                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4418                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4419                         bmcr |= BMCR_ANENABLE;
4420                         /* reset the phy in order for settings to stick,
4421                          * and cause autoneg to start */
4422                         if (phy_reset(dev, bmcr)) {
4423                                 netdev_info(dev, "phy reset failed\n");
4424                                 return -EINVAL;
4425                         }
4426                 } else {
4427                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4428                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4429                 }
4430         } else {
4431                 int adv, bmcr;
4432
4433                 np->autoneg = 0;
4434
4435                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4436                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4437                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4438                         adv |= ADVERTISE_10HALF;
4439                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4440                         adv |= ADVERTISE_10FULL;
4441                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4442                         adv |= ADVERTISE_100HALF;
4443                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4444                         adv |= ADVERTISE_100FULL;
4445                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4446                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4447                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4448                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4449                 }
4450                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4451                         adv |=  ADVERTISE_PAUSE_ASYM;
4452                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4453                 }
4454                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4455                 np->fixed_mode = adv;
4456
4457                 if (np->gigabit == PHY_GIGABIT) {
4458                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4459                         adv &= ~ADVERTISE_1000FULL;
4460                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4461                 }
4462
4463                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4464                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4465                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4466                         bmcr |= BMCR_FULLDPLX;
4467                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4468                         bmcr |= BMCR_SPEED100;
4469                 if (np->phy_oui == PHY_OUI_MARVELL) {
4470                         /* reset the phy in order for forced mode settings to stick */
4471                         if (phy_reset(dev, bmcr)) {
4472                                 netdev_info(dev, "phy reset failed\n");
4473                                 return -EINVAL;
4474                         }
4475                 } else {
4476                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4477                         if (netif_running(dev)) {
4478                                 /* Wait a bit and then reconfigure the nic. */
4479                                 udelay(10);
4480                                 nv_linkchange(dev);
4481                         }
4482                 }
4483         }
4484
4485         if (netif_running(dev)) {
4486                 nv_start_rxtx(dev);
4487                 nv_enable_irq(dev);
4488         }
4489
4490         return 0;
4491 }
4492
4493 #define FORCEDETH_REGS_VER      1
4494
4495 static int nv_get_regs_len(struct net_device *dev)
4496 {
4497         struct fe_priv *np = netdev_priv(dev);
4498         return np->register_size;
4499 }
4500
4501 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4502 {
4503         struct fe_priv *np = netdev_priv(dev);
4504         u8 __iomem *base = get_hwbase(dev);
4505         u32 *rbuf = buf;
4506         int i;
4507
4508         regs->version = FORCEDETH_REGS_VER;
4509         spin_lock_irq(&np->lock);
4510         for (i = 0; i < np->register_size/sizeof(u32); i++)
4511                 rbuf[i] = readl(base + i*sizeof(u32));
4512         spin_unlock_irq(&np->lock);
4513 }
4514
4515 static int nv_nway_reset(struct net_device *dev)
4516 {
4517         struct fe_priv *np = netdev_priv(dev);
4518         int ret;
4519
4520         if (np->autoneg) {
4521                 int bmcr;
4522
4523                 netif_carrier_off(dev);
4524                 if (netif_running(dev)) {
4525                         nv_disable_irq(dev);
4526                         netif_tx_lock_bh(dev);
4527                         netif_addr_lock(dev);
4528                         spin_lock(&np->lock);
4529                         /* stop engines */
4530                         nv_stop_rxtx(dev);
4531                         spin_unlock(&np->lock);
4532                         netif_addr_unlock(dev);
4533                         netif_tx_unlock_bh(dev);
4534                         netdev_info(dev, "link down\n");
4535                 }
4536
4537                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4538                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4539                         bmcr |= BMCR_ANENABLE;
4540                         /* reset the phy in order for settings to stick*/
4541                         if (phy_reset(dev, bmcr)) {
4542                                 netdev_info(dev, "phy reset failed\n");
4543                                 return -EINVAL;
4544                         }
4545                 } else {
4546                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4547                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4548                 }
4549
4550                 if (netif_running(dev)) {
4551                         nv_start_rxtx(dev);
4552                         nv_enable_irq(dev);
4553                 }
4554                 ret = 0;
4555         } else {
4556                 ret = -EINVAL;
4557         }
4558
4559         return ret;
4560 }
4561
4562 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4563 {
4564         struct fe_priv *np = netdev_priv(dev);
4565
4566         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4567         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4568
4569         ring->rx_pending = np->rx_ring_size;
4570         ring->tx_pending = np->tx_ring_size;
4571 }
4572
4573 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4574 {
4575         struct fe_priv *np = netdev_priv(dev);
4576         u8 __iomem *base = get_hwbase(dev);
4577         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4578         dma_addr_t ring_addr;
4579
4580         if (ring->rx_pending < RX_RING_MIN ||
4581             ring->tx_pending < TX_RING_MIN ||
4582             ring->rx_mini_pending != 0 ||
4583             ring->rx_jumbo_pending != 0 ||
4584             (np->desc_ver == DESC_VER_1 &&
4585              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4586               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4587             (np->desc_ver != DESC_VER_1 &&
4588              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4589               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4590                 return -EINVAL;
4591         }
4592
4593         /* allocate new rings */
4594         if (!nv_optimized(np)) {
4595                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4596                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4597                                             &ring_addr);
4598         } else {
4599                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4600                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4601                                             &ring_addr);
4602         }
4603         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4604         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4605         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4606                 /* fall back to old rings */
4607                 if (!nv_optimized(np)) {
4608                         if (rxtx_ring)
4609                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4610                                                     rxtx_ring, ring_addr);
4611                 } else {
4612                         if (rxtx_ring)
4613                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4614                                                     rxtx_ring, ring_addr);
4615                 }
4616
4617                 kfree(rx_skbuff);
4618                 kfree(tx_skbuff);
4619                 goto exit;
4620         }
4621
4622         if (netif_running(dev)) {
4623                 nv_disable_irq(dev);
4624                 nv_napi_disable(dev);
4625                 netif_tx_lock_bh(dev);
4626                 netif_addr_lock(dev);
4627                 spin_lock(&np->lock);
4628                 /* stop engines */
4629                 nv_stop_rxtx(dev);
4630                 nv_txrx_reset(dev);
4631                 /* drain queues */
4632                 nv_drain_rxtx(dev);
4633                 /* delete queues */
4634                 free_rings(dev);
4635         }
4636
4637         /* set new values */
4638         np->rx_ring_size = ring->rx_pending;
4639         np->tx_ring_size = ring->tx_pending;
4640
4641         if (!nv_optimized(np)) {
4642                 np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4643                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4644         } else {
4645                 np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4646                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4647         }
4648         np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4649         np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4650         np->ring_addr = ring_addr;
4651
4652         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4653         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4654
4655         if (netif_running(dev)) {
4656                 /* reinit driver view of the queues */
4657                 set_bufsize(dev);
4658                 if (nv_init_ring(dev)) {
4659                         if (!np->in_shutdown)
4660                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4661                 }
4662
4663                 /* reinit nic view of the queues */
4664                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4665                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4666                 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4667                         base + NvRegRingSizes);
4668                 pci_push(base);
4669                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4670                 pci_push(base);
4671
4672                 /* restart engines */
4673                 nv_start_rxtx(dev);
4674                 spin_unlock(&np->lock);
4675                 netif_addr_unlock(dev);
4676                 netif_tx_unlock_bh(dev);
4677                 nv_napi_enable(dev);
4678                 nv_enable_irq(dev);
4679         }
4680         return 0;
4681 exit:
4682         return -ENOMEM;
4683 }
4684
4685 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4686 {
4687         struct fe_priv *np = netdev_priv(dev);
4688
4689         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4690         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4691         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4692 }
4693
4694 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4695 {
4696         struct fe_priv *np = netdev_priv(dev);
4697         int adv, bmcr;
4698
4699         if ((!np->autoneg && np->duplex == 0) ||
4700             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4701                 netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4702                 return -EINVAL;
4703         }
4704         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4705                 netdev_info(dev, "hardware does not support tx pause frames\n");
4706                 return -EINVAL;
4707         }
4708
4709         netif_carrier_off(dev);
4710         if (netif_running(dev)) {
4711                 nv_disable_irq(dev);
4712                 netif_tx_lock_bh(dev);
4713                 netif_addr_lock(dev);
4714                 spin_lock(&np->lock);
4715                 /* stop engines */
4716                 nv_stop_rxtx(dev);
4717                 spin_unlock(&np->lock);
4718                 netif_addr_unlock(dev);
4719                 netif_tx_unlock_bh(dev);
4720         }
4721
4722         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4723         if (pause->rx_pause)
4724                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4725         if (pause->tx_pause)
4726                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4727
4728         if (np->autoneg && pause->autoneg) {
4729                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4730
4731                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4732                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4733                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4734                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4735                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4736                         adv |=  ADVERTISE_PAUSE_ASYM;
4737                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4738
4739                 if (netif_running(dev))
4740                         netdev_info(dev, "link down\n");
4741                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4742                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4743                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4744         } else {
4745                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4746                 if (pause->rx_pause)
4747                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4748                 if (pause->tx_pause)
4749                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4750
4751                 if (!netif_running(dev))
4752                         nv_update_linkspeed(dev);
4753                 else
4754                         nv_update_pause(dev, np->pause_flags);
4755         }
4756
4757         if (netif_running(dev)) {
4758                 nv_start_rxtx(dev);
4759                 nv_enable_irq(dev);
4760         }
4761         return 0;
4762 }
4763
4764 static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4765 {
4766         struct fe_priv *np = netdev_priv(dev);
4767         unsigned long flags;
4768         u32 miicontrol;
4769         int err, retval = 0;
4770
4771         spin_lock_irqsave(&np->lock, flags);
4772         miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4773         if (features & NETIF_F_LOOPBACK) {
4774                 if (miicontrol & BMCR_LOOPBACK) {
4775                         spin_unlock_irqrestore(&np->lock, flags);
4776                         netdev_info(dev, "Loopback already enabled\n");
4777                         return 0;
4778                 }
4779                 nv_disable_irq(dev);
4780                 /* Turn on loopback mode */
4781                 miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4782                 err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4783                 if (err) {
4784                         retval = PHY_ERROR;
4785                         spin_unlock_irqrestore(&np->lock, flags);
4786                         phy_init(dev);
4787                 } else {
4788                         if (netif_running(dev)) {
4789                                 /* Force 1000 Mbps full-duplex */
4790                                 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4791                                                                          1);
4792                                 /* Force link up */
4793                                 netif_carrier_on(dev);
4794                         }
4795                         spin_unlock_irqrestore(&np->lock, flags);
4796                         netdev_info(dev,
4797                                 "Internal PHY loopback mode enabled.\n");
4798                 }
4799         } else {
4800                 if (!(miicontrol & BMCR_LOOPBACK)) {
4801                         spin_unlock_irqrestore(&np->lock, flags);
4802                         netdev_info(dev, "Loopback already disabled\n");
4803                         return 0;
4804                 }
4805                 nv_disable_irq(dev);
4806                 /* Turn off loopback */
4807                 spin_unlock_irqrestore(&np->lock, flags);
4808                 netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4809                 phy_init(dev);
4810         }
4811         msleep(500);
4812         spin_lock_irqsave(&np->lock, flags);
4813         nv_enable_irq(dev);
4814         spin_unlock_irqrestore(&np->lock, flags);
4815
4816         return retval;
4817 }
4818
4819 static netdev_features_t nv_fix_features(struct net_device *dev,
4820         netdev_features_t features)
4821 {
4822         /* vlan is dependent on rx checksum offload */
4823         if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4824                 features |= NETIF_F_RXCSUM;
4825
4826         return features;
4827 }
4828
4829 static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4830 {
4831         struct fe_priv *np = get_nvpriv(dev);
4832
4833         spin_lock_irq(&np->lock);
4834
4835         if (features & NETIF_F_HW_VLAN_CTAG_RX)
4836                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4837         else
4838                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4839
4840         if (features & NETIF_F_HW_VLAN_CTAG_TX)
4841                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4842         else
4843                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4844
4845         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4846
4847         spin_unlock_irq(&np->lock);
4848 }
4849
4850 static int nv_set_features(struct net_device *dev, netdev_features_t features)
4851 {
4852         struct fe_priv *np = netdev_priv(dev);
4853         u8 __iomem *base = get_hwbase(dev);
4854         netdev_features_t changed = dev->features ^ features;
4855         int retval;
4856
4857         if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4858                 retval = nv_set_loopback(dev, features);
4859                 if (retval != 0)
4860                         return retval;
4861         }
4862
4863         if (changed & NETIF_F_RXCSUM) {
4864                 spin_lock_irq(&np->lock);
4865
4866                 if (features & NETIF_F_RXCSUM)
4867                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4868                 else
4869                         np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4870
4871                 if (netif_running(dev))
4872                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4873
4874                 spin_unlock_irq(&np->lock);
4875         }
4876
4877         if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
4878                 nv_vlan_mode(dev, features);
4879
4880         return 0;
4881 }
4882
4883 static int nv_get_sset_count(struct net_device *dev, int sset)
4884 {
4885         struct fe_priv *np = netdev_priv(dev);
4886
4887         switch (sset) {
4888         case ETH_SS_TEST:
4889                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4890                         return NV_TEST_COUNT_EXTENDED;
4891                 else
4892                         return NV_TEST_COUNT_BASE;
4893         case ETH_SS_STATS:
4894                 if (np->driver_data & DEV_HAS_STATISTICS_V3)
4895                         return NV_DEV_STATISTICS_V3_COUNT;
4896                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4897                         return NV_DEV_STATISTICS_V2_COUNT;
4898                 else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4899                         return NV_DEV_STATISTICS_V1_COUNT;
4900                 else
4901                         return 0;
4902         default:
4903                 return -EOPNOTSUPP;
4904         }
4905 }
4906
4907 static void nv_get_ethtool_stats(struct net_device *dev,
4908                                  struct ethtool_stats *estats, u64 *buffer)
4909         __acquires(&netdev_priv(dev)->hwstats_lock)
4910         __releases(&netdev_priv(dev)->hwstats_lock)
4911 {
4912         struct fe_priv *np = netdev_priv(dev);
4913
4914         spin_lock_bh(&np->hwstats_lock);
4915         nv_update_stats(dev);
4916         memcpy(buffer, &np->estats,
4917                nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4918         spin_unlock_bh(&np->hwstats_lock);
4919 }
4920
4921 static int nv_link_test(struct net_device *dev)
4922 {
4923         struct fe_priv *np = netdev_priv(dev);
4924         int mii_status;
4925
4926         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4927         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4928
4929         /* check phy link status */
4930         if (!(mii_status & BMSR_LSTATUS))
4931                 return 0;
4932         else
4933                 return 1;
4934 }
4935
4936 static int nv_register_test(struct net_device *dev)
4937 {
4938         u8 __iomem *base = get_hwbase(dev);
4939         int i = 0;
4940         u32 orig_read, new_read;
4941
4942         do {
4943                 orig_read = readl(base + nv_registers_test[i].reg);
4944
4945                 /* xor with mask to toggle bits */
4946                 orig_read ^= nv_registers_test[i].mask;
4947
4948                 writel(orig_read, base + nv_registers_test[i].reg);
4949
4950                 new_read = readl(base + nv_registers_test[i].reg);
4951
4952                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4953                         return 0;
4954
4955                 /* restore original value */
4956                 orig_read ^= nv_registers_test[i].mask;
4957                 writel(orig_read, base + nv_registers_test[i].reg);
4958
4959         } while (nv_registers_test[++i].reg != 0);
4960
4961         return 1;
4962 }
4963
4964 static int nv_interrupt_test(struct net_device *dev)
4965 {
4966         struct fe_priv *np = netdev_priv(dev);
4967         u8 __iomem *base = get_hwbase(dev);
4968         int ret = 1;
4969         int testcnt;
4970         u32 save_msi_flags, save_poll_interval = 0;
4971
4972         if (netif_running(dev)) {
4973                 /* free current irq */
4974                 nv_free_irq(dev);
4975                 save_poll_interval = readl(base+NvRegPollingInterval);
4976         }
4977
4978         /* flag to test interrupt handler */
4979         np->intr_test = 0;
4980
4981         /* setup test irq */
4982         save_msi_flags = np->msi_flags;
4983         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4984         np->msi_flags |= 0x001; /* setup 1 vector */
4985         if (nv_request_irq(dev, 1))
4986                 return 0;
4987
4988         /* setup timer interrupt */
4989         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4990         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4991
4992         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4993
4994         /* wait for at least one interrupt */
4995         msleep(100);
4996
4997         spin_lock_irq(&np->lock);
4998
4999         /* flag should be set within ISR */
5000         testcnt = np->intr_test;
5001         if (!testcnt)
5002                 ret = 2;
5003
5004         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5005         if (!(np->msi_flags & NV_MSI_X_ENABLED))
5006                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5007         else
5008                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5009
5010         spin_unlock_irq(&np->lock);
5011
5012         nv_free_irq(dev);
5013
5014         np->msi_flags = save_msi_flags;
5015
5016         if (netif_running(dev)) {
5017                 writel(save_poll_interval, base + NvRegPollingInterval);
5018                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5019                 /* restore original irq */
5020                 if (nv_request_irq(dev, 0))
5021                         return 0;
5022         }
5023
5024         return ret;
5025 }
5026
5027 static int nv_loopback_test(struct net_device *dev)
5028 {
5029         struct fe_priv *np = netdev_priv(dev);
5030         u8 __iomem *base = get_hwbase(dev);
5031         struct sk_buff *tx_skb, *rx_skb;
5032         dma_addr_t test_dma_addr;
5033         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
5034         u32 flags;
5035         int len, i, pkt_len;
5036         u8 *pkt_data;
5037         u32 filter_flags = 0;
5038         u32 misc1_flags = 0;
5039         int ret = 1;
5040
5041         if (netif_running(dev)) {
5042                 nv_disable_irq(dev);
5043                 filter_flags = readl(base + NvRegPacketFilterFlags);
5044                 misc1_flags = readl(base + NvRegMisc1);
5045         } else {
5046                 nv_txrx_reset(dev);
5047         }
5048
5049         /* reinit driver view of the rx queue */
5050         set_bufsize(dev);
5051         nv_init_ring(dev);
5052
5053         /* setup hardware for loopback */
5054         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5055         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5056
5057         /* reinit nic view of the rx queue */
5058         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5059         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5060         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5061                 base + NvRegRingSizes);
5062         pci_push(base);
5063
5064         /* restart rx engine */
5065         nv_start_rxtx(dev);
5066
5067         /* setup packet for tx */
5068         pkt_len = ETH_DATA_LEN;
5069         tx_skb = netdev_alloc_skb(dev, pkt_len);
5070         if (!tx_skb) {
5071                 ret = 0;
5072                 goto out;
5073         }
5074         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5075                                        skb_tailroom(tx_skb),
5076                                        PCI_DMA_FROMDEVICE);
5077         if (pci_dma_mapping_error(np->pci_dev,
5078                                   test_dma_addr)) {
5079                 dev_kfree_skb_any(tx_skb);
5080                 goto out;
5081         }
5082         pkt_data = skb_put(tx_skb, pkt_len);
5083         for (i = 0; i < pkt_len; i++)
5084                 pkt_data[i] = (u8)(i & 0xff);
5085
5086         if (!nv_optimized(np)) {
5087                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5088                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5089         } else {
5090                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5091                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5092                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5093         }
5094         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5095         pci_push(get_hwbase(dev));
5096
5097         msleep(500);
5098
5099         /* check for rx of the packet */
5100         if (!nv_optimized(np)) {
5101                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5102                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5103
5104         } else {
5105                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5106                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5107         }
5108
5109         if (flags & NV_RX_AVAIL) {
5110                 ret = 0;
5111         } else if (np->desc_ver == DESC_VER_1) {
5112                 if (flags & NV_RX_ERROR)
5113                         ret = 0;
5114         } else {
5115                 if (flags & NV_RX2_ERROR)
5116                         ret = 0;
5117         }
5118
5119         if (ret) {
5120                 if (len != pkt_len) {
5121                         ret = 0;
5122                 } else {
5123                         rx_skb = np->rx_skb[0].skb;
5124                         for (i = 0; i < pkt_len; i++) {
5125                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
5126                                         ret = 0;
5127                                         break;
5128                                 }
5129                         }
5130                 }
5131         }
5132
5133         pci_unmap_single(np->pci_dev, test_dma_addr,
5134                        (skb_end_pointer(tx_skb) - tx_skb->data),
5135                        PCI_DMA_TODEVICE);
5136         dev_kfree_skb_any(tx_skb);
5137  out:
5138         /* stop engines */
5139         nv_stop_rxtx(dev);
5140         nv_txrx_reset(dev);
5141         /* drain rx queue */
5142         nv_drain_rxtx(dev);
5143
5144         if (netif_running(dev)) {
5145                 writel(misc1_flags, base + NvRegMisc1);
5146                 writel(filter_flags, base + NvRegPacketFilterFlags);
5147                 nv_enable_irq(dev);
5148         }
5149
5150         return ret;
5151 }
5152
5153 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5154 {
5155         struct fe_priv *np = netdev_priv(dev);
5156         u8 __iomem *base = get_hwbase(dev);
5157         int result, count;
5158
5159         count = nv_get_sset_count(dev, ETH_SS_TEST);
5160         memset(buffer, 0, count * sizeof(u64));
5161
5162         if (!nv_link_test(dev)) {
5163                 test->flags |= ETH_TEST_FL_FAILED;
5164                 buffer[0] = 1;
5165         }
5166
5167         if (test->flags & ETH_TEST_FL_OFFLINE) {
5168                 if (netif_running(dev)) {
5169                         netif_stop_queue(dev);
5170                         nv_napi_disable(dev);
5171                         netif_tx_lock_bh(dev);
5172                         netif_addr_lock(dev);
5173                         spin_lock_irq(&np->lock);
5174                         nv_disable_hw_interrupts(dev, np->irqmask);
5175                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
5176                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5177                         else
5178                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5179                         /* stop engines */
5180                         nv_stop_rxtx(dev);
5181                         nv_txrx_reset(dev);
5182                         /* drain rx queue */
5183                         nv_drain_rxtx(dev);
5184                         spin_unlock_irq(&np->lock);
5185                         netif_addr_unlock(dev);
5186                         netif_tx_unlock_bh(dev);
5187                 }
5188
5189                 if (!nv_register_test(dev)) {
5190                         test->flags |= ETH_TEST_FL_FAILED;
5191                         buffer[1] = 1;
5192                 }
5193
5194                 result = nv_interrupt_test(dev);
5195                 if (result != 1) {
5196                         test->flags |= ETH_TEST_FL_FAILED;
5197                         buffer[2] = 1;
5198                 }
5199                 if (result == 0) {
5200                         /* bail out */
5201                         return;
5202                 }
5203
5204                 if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
5205                         test->flags |= ETH_TEST_FL_FAILED;
5206                         buffer[3] = 1;
5207                 }
5208
5209                 if (netif_running(dev)) {
5210                         /* reinit driver view of the rx queue */
5211                         set_bufsize(dev);
5212                         if (nv_init_ring(dev)) {
5213                                 if (!np->in_shutdown)
5214                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5215                         }
5216                         /* reinit nic view of the rx queue */
5217                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5218                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5219                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5220                                 base + NvRegRingSizes);
5221                         pci_push(base);
5222                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5223                         pci_push(base);
5224                         /* restart rx engine */
5225                         nv_start_rxtx(dev);
5226                         netif_start_queue(dev);
5227                         nv_napi_enable(dev);
5228                         nv_enable_hw_interrupts(dev, np->irqmask);
5229                 }
5230         }
5231 }
5232
5233 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5234 {
5235         switch (stringset) {
5236         case ETH_SS_STATS:
5237                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5238                 break;
5239         case ETH_SS_TEST:
5240                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5241                 break;
5242         }
5243 }
5244
5245 static const struct ethtool_ops ops = {
5246         .get_drvinfo = nv_get_drvinfo,
5247         .get_link = ethtool_op_get_link,
5248         .get_wol = nv_get_wol,
5249         .set_wol = nv_set_wol,
5250         .get_settings = nv_get_settings,
5251         .set_settings = nv_set_settings,
5252         .get_regs_len = nv_get_regs_len,
5253         .get_regs = nv_get_regs,
5254         .nway_reset = nv_nway_reset,
5255         .get_ringparam = nv_get_ringparam,
5256         .set_ringparam = nv_set_ringparam,
5257         .get_pauseparam = nv_get_pauseparam,
5258         .set_pauseparam = nv_set_pauseparam,
5259         .get_strings = nv_get_strings,
5260         .get_ethtool_stats = nv_get_ethtool_stats,
5261         .get_sset_count = nv_get_sset_count,
5262         .self_test = nv_self_test,
5263         .get_ts_info = ethtool_op_get_ts_info,
5264 };
5265
5266 /* The mgmt unit and driver use a semaphore to access the phy during init */
5267 static int nv_mgmt_acquire_sema(struct net_device *dev)
5268 {
5269         struct fe_priv *np = netdev_priv(dev);
5270         u8 __iomem *base = get_hwbase(dev);
5271         int i;
5272         u32 tx_ctrl, mgmt_sema;
5273
5274         for (i = 0; i < 10; i++) {
5275                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5276                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5277                         break;
5278                 msleep(500);
5279         }
5280
5281         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5282                 return 0;
5283
5284         for (i = 0; i < 2; i++) {
5285                 tx_ctrl = readl(base + NvRegTransmitterControl);
5286                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5287                 writel(tx_ctrl, base + NvRegTransmitterControl);
5288
5289                 /* verify that semaphore was acquired */
5290                 tx_ctrl = readl(base + NvRegTransmitterControl);
5291                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5292                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5293                         np->mgmt_sema = 1;
5294                         return 1;
5295                 } else
5296                         udelay(50);
5297         }
5298
5299         return 0;
5300 }
5301
5302 static void nv_mgmt_release_sema(struct net_device *dev)
5303 {
5304         struct fe_priv *np = netdev_priv(dev);
5305         u8 __iomem *base = get_hwbase(dev);
5306         u32 tx_ctrl;
5307
5308         if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5309                 if (np->mgmt_sema) {
5310                         tx_ctrl = readl(base + NvRegTransmitterControl);
5311                         tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5312                         writel(tx_ctrl, base + NvRegTransmitterControl);
5313                 }
5314         }
5315 }
5316
5317
5318 static int nv_mgmt_get_version(struct net_device *dev)
5319 {
5320         struct fe_priv *np = netdev_priv(dev);
5321         u8 __iomem *base = get_hwbase(dev);
5322         u32 data_ready = readl(base + NvRegTransmitterControl);
5323         u32 data_ready2 = 0;
5324         unsigned long start;
5325         int ready = 0;
5326
5327         writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5328         writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5329         start = jiffies;
5330         while (time_before(jiffies, start + 5*HZ)) {
5331                 data_ready2 = readl(base + NvRegTransmitterControl);
5332                 if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5333                         ready = 1;
5334                         break;
5335                 }
5336                 schedule_timeout_uninterruptible(1);
5337         }
5338
5339         if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5340                 return 0;
5341
5342         np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5343
5344         return 1;
5345 }
5346
5347 static int nv_open(struct net_device *dev)
5348 {
5349         struct fe_priv *np = netdev_priv(dev);
5350         u8 __iomem *base = get_hwbase(dev);
5351         int ret = 1;
5352         int oom, i;
5353         u32 low;
5354
5355         /* power up phy */
5356         mii_rw(dev, np->phyaddr, MII_BMCR,
5357                mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5358
5359         nv_txrx_gate(dev, false);
5360         /* erase previous misconfiguration */
5361         if (np->driver_data & DEV_HAS_POWER_CNTRL)
5362                 nv_mac_reset(dev);
5363         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5364         writel(0, base + NvRegMulticastAddrB);
5365         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5366         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5367         writel(0, base + NvRegPacketFilterFlags);
5368
5369         writel(0, base + NvRegTransmitterControl);
5370         writel(0, base + NvRegReceiverControl);
5371
5372         writel(0, base + NvRegAdapterControl);
5373
5374         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5375                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5376
5377         /* initialize descriptor rings */
5378         set_bufsize(dev);
5379         oom = nv_init_ring(dev);
5380
5381         writel(0, base + NvRegLinkSpeed);
5382         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5383         nv_txrx_reset(dev);
5384         writel(0, base + NvRegUnknownSetupReg6);
5385
5386         np->in_shutdown = 0;
5387
5388         /* give hw rings */
5389         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5390         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5391                 base + NvRegRingSizes);
5392
5393         writel(np->linkspeed, base + NvRegLinkSpeed);
5394         if (np->desc_ver == DESC_VER_1)
5395                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5396         else
5397                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5398         writel(np->txrxctl_bits, base + NvRegTxRxControl);
5399         writel(np->vlanctl_bits, base + NvRegVlanControl);
5400         pci_push(base);
5401         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5402         if (reg_delay(dev, NvRegUnknownSetupReg5,
5403                       NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5404                       NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5405                 netdev_info(dev,
5406                             "%s: SetupReg5, Bit 31 remained off\n", __func__);
5407
5408         writel(0, base + NvRegMIIMask);
5409         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5410         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5411
5412         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5413         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5414         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5415         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5416
5417         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5418
5419         get_random_bytes(&low, sizeof(low));
5420         low &= NVREG_SLOTTIME_MASK;
5421         if (np->desc_ver == DESC_VER_1) {
5422                 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5423         } else {
5424                 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5425                         /* setup legacy backoff */
5426                         writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5427                 } else {
5428                         writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5429                         nv_gear_backoff_reseed(dev);
5430                 }
5431         }
5432         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5433         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5434         if (poll_interval == -1) {
5435                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5436                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5437                 else
5438                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5439         } else
5440                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5441         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5442         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5443                         base + NvRegAdapterControl);
5444         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5445         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5446         if (np->wolenabled)
5447                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5448
5449         i = readl(base + NvRegPowerState);
5450         if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5451                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5452
5453         pci_push(base);
5454         udelay(10);
5455         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5456
5457         nv_disable_hw_interrupts(dev, np->irqmask);
5458         pci_push(base);
5459         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5460         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5461         pci_push(base);
5462
5463         if (nv_request_irq(dev, 0))
5464                 goto out_drain;
5465
5466         /* ask for interrupts */
5467         nv_enable_hw_interrupts(dev, np->irqmask);
5468
5469         spin_lock_irq(&np->lock);
5470         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5471         writel(0, base + NvRegMulticastAddrB);
5472         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5473         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5474         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5475         /* One manual link speed update: Interrupts are enabled, future link
5476          * speed changes cause interrupts and are handled by nv_link_irq().
5477          */
5478         {
5479                 u32 miistat;
5480                 miistat = readl(base + NvRegMIIStatus);
5481                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5482         }
5483         /* set linkspeed to invalid value, thus force nv_update_linkspeed
5484          * to init hw */
5485         np->linkspeed = 0;
5486         ret = nv_update_linkspeed(dev);
5487         nv_start_rxtx(dev);
5488         netif_start_queue(dev);
5489         nv_napi_enable(dev);
5490
5491         if (ret) {
5492                 netif_carrier_on(dev);
5493         } else {
5494                 netdev_info(dev, "no link during initialization\n");
5495                 netif_carrier_off(dev);
5496         }
5497         if (oom)
5498                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5499
5500         /* start statistics timer */
5501         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5502                 mod_timer(&np->stats_poll,
5503                         round_jiffies(jiffies + STATS_INTERVAL));
5504
5505         spin_unlock_irq(&np->lock);
5506
5507         /* If the loopback feature was set while the device was down, make sure
5508          * that it's set correctly now.
5509          */
5510         if (dev->features & NETIF_F_LOOPBACK)
5511                 nv_set_loopback(dev, dev->features);
5512
5513         return 0;
5514 out_drain:
5515         nv_drain_rxtx(dev);
5516         return ret;
5517 }
5518
5519 static int nv_close(struct net_device *dev)
5520 {
5521         struct fe_priv *np = netdev_priv(dev);
5522         u8 __iomem *base;
5523
5524         spin_lock_irq(&np->lock);
5525         np->in_shutdown = 1;
5526         spin_unlock_irq(&np->lock);
5527         nv_napi_disable(dev);
5528         synchronize_irq(np->pci_dev->irq);
5529
5530         del_timer_sync(&np->oom_kick);
5531         del_timer_sync(&np->nic_poll);
5532         del_timer_sync(&np->stats_poll);
5533
5534         netif_stop_queue(dev);
5535         spin_lock_irq(&np->lock);
5536         nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5537         nv_stop_rxtx(dev);
5538         nv_txrx_reset(dev);
5539
5540         /* disable interrupts on the nic or we will lock up */
5541         base = get_hwbase(dev);
5542         nv_disable_hw_interrupts(dev, np->irqmask);
5543         pci_push(base);
5544
5545         spin_unlock_irq(&np->lock);
5546
5547         nv_free_irq(dev);
5548
5549         nv_drain_rxtx(dev);
5550
5551         if (np->wolenabled || !phy_power_down) {
5552                 nv_txrx_gate(dev, false);
5553                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5554                 nv_start_rx(dev);
5555         } else {
5556                 /* power down phy */
5557                 mii_rw(dev, np->phyaddr, MII_BMCR,
5558                        mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5559                 nv_txrx_gate(dev, true);
5560         }
5561
5562         /* FIXME: power down nic */
5563
5564         return 0;
5565 }
5566
5567 static const struct net_device_ops nv_netdev_ops = {
5568         .ndo_open               = nv_open,
5569         .ndo_stop               = nv_close,
5570         .ndo_get_stats64        = nv_get_stats64,
5571         .ndo_start_xmit         = nv_start_xmit,
5572         .ndo_tx_timeout         = nv_tx_timeout,
5573         .ndo_change_mtu         = nv_change_mtu,
5574         .ndo_fix_features       = nv_fix_features,
5575         .ndo_set_features       = nv_set_features,
5576         .ndo_validate_addr      = eth_validate_addr,
5577         .ndo_set_mac_address    = nv_set_mac_address,
5578         .ndo_set_rx_mode        = nv_set_multicast,
5579 #ifdef CONFIG_NET_POLL_CONTROLLER
5580         .ndo_poll_controller    = nv_poll_controller,
5581 #endif
5582 };
5583
5584 static const struct net_device_ops nv_netdev_ops_optimized = {
5585         .ndo_open               = nv_open,
5586         .ndo_stop               = nv_close,
5587         .ndo_get_stats64        = nv_get_stats64,
5588         .ndo_start_xmit         = nv_start_xmit_optimized,
5589         .ndo_tx_timeout         = nv_tx_timeout,
5590         .ndo_change_mtu         = nv_change_mtu,
5591         .ndo_fix_features       = nv_fix_features,
5592         .ndo_set_features       = nv_set_features,
5593         .ndo_validate_addr      = eth_validate_addr,
5594         .ndo_set_mac_address    = nv_set_mac_address,
5595         .ndo_set_rx_mode        = nv_set_multicast,
5596 #ifdef CONFIG_NET_POLL_CONTROLLER
5597         .ndo_poll_controller    = nv_poll_controller,
5598 #endif
5599 };
5600
5601 static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5602 {
5603         struct net_device *dev;
5604         struct fe_priv *np;
5605         unsigned long addr;
5606         u8 __iomem *base;
5607         int err, i;
5608         u32 powerstate, txreg;
5609         u32 phystate_orig = 0, phystate;
5610         int phyinitialized = 0;
5611         static int printed_version;
5612
5613         if (!printed_version++)
5614                 pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5615                         FORCEDETH_VERSION);
5616
5617         dev = alloc_etherdev(sizeof(struct fe_priv));
5618         err = -ENOMEM;
5619         if (!dev)
5620                 goto out;
5621
5622         np = netdev_priv(dev);
5623         np->dev = dev;
5624         np->pci_dev = pci_dev;
5625         spin_lock_init(&np->lock);
5626         spin_lock_init(&np->hwstats_lock);
5627         SET_NETDEV_DEV(dev, &pci_dev->dev);
5628         u64_stats_init(&np->swstats_rx_syncp);
5629         u64_stats_init(&np->swstats_tx_syncp);
5630
5631         init_timer(&np->oom_kick);
5632         np->oom_kick.data = (unsigned long) dev;
5633         np->oom_kick.function = nv_do_rx_refill;        /* timer handler */
5634         init_timer(&np->nic_poll);
5635         np->nic_poll.data = (unsigned long) dev;
5636         np->nic_poll.function = nv_do_nic_poll; /* timer handler */
5637         init_timer_deferrable(&np->stats_poll);
5638         np->stats_poll.data = (unsigned long) dev;
5639         np->stats_poll.function = nv_do_stats_poll;     /* timer handler */
5640
5641         err = pci_enable_device(pci_dev);
5642         if (err)
5643                 goto out_free;
5644
5645         pci_set_master(pci_dev);
5646
5647         err = pci_request_regions(pci_dev, DRV_NAME);
5648         if (err < 0)
5649                 goto out_disable;
5650
5651         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5652                 np->register_size = NV_PCI_REGSZ_VER3;
5653         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5654                 np->register_size = NV_PCI_REGSZ_VER2;
5655         else
5656                 np->register_size = NV_PCI_REGSZ_VER1;
5657
5658         err = -EINVAL;
5659         addr = 0;
5660         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5661                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5662                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5663                         addr = pci_resource_start(pci_dev, i);
5664                         break;
5665                 }
5666         }
5667         if (i == DEVICE_COUNT_RESOURCE) {
5668                 dev_info(&pci_dev->dev, "Couldn't find register window\n");
5669                 goto out_relreg;
5670         }
5671
5672         /* copy of driver data */
5673         np->driver_data = id->driver_data;
5674         /* copy of device id */
5675         np->device_id = id->device;
5676
5677         /* handle different descriptor versions */
5678         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5679                 /* packet format 3: supports 40-bit addressing */
5680                 np->desc_ver = DESC_VER_3;
5681                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5682                 if (dma_64bit) {
5683                         if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5684                                 dev_info(&pci_dev->dev,
5685                                          "64-bit DMA failed, using 32-bit addressing\n");
5686                         else
5687                                 dev->features |= NETIF_F_HIGHDMA;
5688                         if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5689                                 dev_info(&pci_dev->dev,
5690                                          "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5691                         }
5692                 }
5693         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5694                 /* packet format 2: supports jumbo frames */
5695                 np->desc_ver = DESC_VER_2;
5696                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5697         } else {
5698                 /* original packet format */
5699                 np->desc_ver = DESC_VER_1;
5700                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5701         }
5702
5703         np->pkt_limit = NV_PKTLIMIT_1;
5704         if (id->driver_data & DEV_HAS_LARGEDESC)
5705                 np->pkt_limit = NV_PKTLIMIT_2;
5706
5707         if (id->driver_data & DEV_HAS_CHECKSUM) {
5708                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5709                 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5710                         NETIF_F_TSO | NETIF_F_RXCSUM;
5711         }
5712
5713         np->vlanctl_bits = 0;
5714         if (id->driver_data & DEV_HAS_VLAN) {
5715                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5716                 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
5717                                     NETIF_F_HW_VLAN_CTAG_TX;
5718         }
5719
5720         dev->features |= dev->hw_features;
5721
5722         /* Add loopback capability to the device. */
5723         dev->hw_features |= NETIF_F_LOOPBACK;
5724
5725         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5726         if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5727             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5728             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5729                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5730         }
5731
5732         err = -ENOMEM;
5733         np->base = ioremap(addr, np->register_size);
5734         if (!np->base)
5735                 goto out_relreg;
5736
5737         np->rx_ring_size = RX_RING_DEFAULT;
5738         np->tx_ring_size = TX_RING_DEFAULT;
5739
5740         if (!nv_optimized(np)) {
5741                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5742                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5743                                         &np->ring_addr);
5744                 if (!np->rx_ring.orig)
5745                         goto out_unmap;
5746                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5747         } else {
5748                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5749                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5750                                         &np->ring_addr);
5751                 if (!np->rx_ring.ex)
5752                         goto out_unmap;
5753                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5754         }
5755         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5756         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5757         if (!np->rx_skb || !np->tx_skb)
5758                 goto out_freering;
5759
5760         if (!nv_optimized(np))
5761                 dev->netdev_ops = &nv_netdev_ops;
5762         else
5763                 dev->netdev_ops = &nv_netdev_ops_optimized;
5764
5765         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5766         SET_ETHTOOL_OPS(dev, &ops);
5767         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5768
5769         pci_set_drvdata(pci_dev, dev);
5770
5771         /* read the mac address */
5772         base = get_hwbase(dev);
5773         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5774         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5775
5776         /* check the workaround bit for correct mac address order */
5777         txreg = readl(base + NvRegTransmitPoll);
5778         if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5779                 /* mac address is already in correct order */
5780                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5781                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5782                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5783                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5784                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5785                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5786         } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5787                 /* mac address is already in correct order */
5788                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5789                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5790                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5791                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5792                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5793                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5794                 /*
5795                  * Set orig mac address back to the reversed version.
5796                  * This flag will be cleared during low power transition.
5797                  * Therefore, we should always put back the reversed address.
5798                  */
5799                 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5800                         (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5801                 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5802         } else {
5803                 /* need to reverse mac address to correct order */
5804                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5805                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5806                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5807                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5808                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5809                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5810                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5811                 dev_dbg(&pci_dev->dev,
5812                         "%s: set workaround bit for reversed mac addr\n",
5813                         __func__);
5814         }
5815
5816         if (!is_valid_ether_addr(dev->dev_addr)) {
5817                 /*
5818                  * Bad mac address. At least one bios sets the mac address
5819                  * to 01:23:45:67:89:ab
5820                  */
5821                 dev_err(&pci_dev->dev,
5822                         "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5823                         dev->dev_addr);
5824                 eth_hw_addr_random(dev);
5825                 dev_err(&pci_dev->dev,
5826                         "Using random MAC address: %pM\n", dev->dev_addr);
5827         }
5828
5829         /* set mac address */
5830         nv_copy_mac_to_hw(dev);
5831
5832         /* disable WOL */
5833         writel(0, base + NvRegWakeUpFlags);
5834         np->wolenabled = 0;
5835         device_set_wakeup_enable(&pci_dev->dev, false);
5836
5837         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5838
5839                 /* take phy and nic out of low power mode */
5840                 powerstate = readl(base + NvRegPowerState2);
5841                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5842                 if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5843                     pci_dev->revision >= 0xA3)
5844                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5845                 writel(powerstate, base + NvRegPowerState2);
5846         }
5847
5848         if (np->desc_ver == DESC_VER_1)
5849                 np->tx_flags = NV_TX_VALID;
5850         else
5851                 np->tx_flags = NV_TX2_VALID;
5852
5853         np->msi_flags = 0;
5854         if ((id->driver_data & DEV_HAS_MSI) && msi)
5855                 np->msi_flags |= NV_MSI_CAPABLE;
5856
5857         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5858                 /* msix has had reported issues when modifying irqmask
5859                    as in the case of napi, therefore, disable for now
5860                 */
5861 #if 0
5862                 np->msi_flags |= NV_MSI_X_CAPABLE;
5863 #endif
5864         }
5865
5866         if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5867                 np->irqmask = NVREG_IRQMASK_CPU;
5868                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5869                         np->msi_flags |= 0x0001;
5870         } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5871                    !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5872                 /* start off in throughput mode */
5873                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5874                 /* remove support for msix mode */
5875                 np->msi_flags &= ~NV_MSI_X_CAPABLE;
5876         } else {
5877                 optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5878                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5879                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5880                         np->msi_flags |= 0x0003;
5881         }
5882
5883         if (id->driver_data & DEV_NEED_TIMERIRQ)
5884                 np->irqmask |= NVREG_IRQ_TIMER;
5885         if (id->driver_data & DEV_NEED_LINKTIMER) {
5886                 np->need_linktimer = 1;
5887                 np->link_timeout = jiffies + LINK_TIMEOUT;
5888         } else {
5889                 np->need_linktimer = 0;
5890         }
5891
5892         /* Limit the number of tx's outstanding for hw bug */
5893         if (id->driver_data & DEV_NEED_TX_LIMIT) {
5894                 np->tx_limit = 1;
5895                 if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5896                     pci_dev->revision >= 0xA2)
5897                         np->tx_limit = 0;
5898         }
5899
5900         /* clear phy state and temporarily halt phy interrupts */
5901         writel(0, base + NvRegMIIMask);
5902         phystate = readl(base + NvRegAdapterControl);
5903         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5904                 phystate_orig = 1;
5905                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5906                 writel(phystate, base + NvRegAdapterControl);
5907         }
5908         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5909
5910         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5911                 /* management unit running on the mac? */
5912                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5913                     (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5914                     nv_mgmt_acquire_sema(dev) &&
5915                     nv_mgmt_get_version(dev)) {
5916                         np->mac_in_use = 1;
5917                         if (np->mgmt_version > 0)
5918                                 np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5919                         /* management unit setup the phy already? */
5920                         if (np->mac_in_use &&
5921                             ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5922                              NVREG_XMITCTL_SYNC_PHY_INIT)) {
5923                                 /* phy is inited by mgmt unit */
5924                                 phyinitialized = 1;
5925                         } else {
5926                                 /* we need to init the phy */
5927                         }
5928                 }
5929         }
5930
5931         /* find a suitable phy */
5932         for (i = 1; i <= 32; i++) {
5933                 int id1, id2;
5934                 int phyaddr = i & 0x1F;
5935
5936                 spin_lock_irq(&np->lock);
5937                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5938                 spin_unlock_irq(&np->lock);
5939                 if (id1 < 0 || id1 == 0xffff)
5940                         continue;
5941                 spin_lock_irq(&np->lock);
5942                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5943                 spin_unlock_irq(&np->lock);
5944                 if (id2 < 0 || id2 == 0xffff)
5945                         continue;
5946
5947                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5948                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5949                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5950                 np->phyaddr = phyaddr;
5951                 np->phy_oui = id1 | id2;
5952
5953                 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5954                 if (np->phy_oui == PHY_OUI_REALTEK2)
5955                         np->phy_oui = PHY_OUI_REALTEK;
5956                 /* Setup phy revision for Realtek */
5957                 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5958                         np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5959
5960                 break;
5961         }
5962         if (i == 33) {
5963                 dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5964                 goto out_error;
5965         }
5966
5967         if (!phyinitialized) {
5968                 /* reset it */
5969                 phy_init(dev);
5970         } else {
5971                 /* see if it is a gigabit phy */
5972                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5973                 if (mii_status & PHY_GIGABIT)
5974                         np->gigabit = PHY_GIGABIT;
5975         }
5976
5977         /* set default link speed settings */
5978         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5979         np->duplex = 0;
5980         np->autoneg = 1;
5981
5982         err = register_netdev(dev);
5983         if (err) {
5984                 dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5985                 goto out_error;
5986         }
5987
5988         netif_carrier_off(dev);
5989
5990         /* Some NICs freeze when TX pause is enabled while NIC is
5991          * down, and this stays across warm reboots. The sequence
5992          * below should be enough to recover from that state.
5993          */
5994         nv_update_pause(dev, 0);
5995         nv_start_tx(dev);
5996         nv_stop_tx(dev);
5997
5998         if (id->driver_data & DEV_HAS_VLAN)
5999                 nv_vlan_mode(dev, dev->features);
6000
6001         dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
6002                  dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
6003
6004         dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
6005                  dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
6006                  dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
6007                         "csum " : "",
6008                  dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
6009                                   NETIF_F_HW_VLAN_CTAG_TX) ?
6010                         "vlan " : "",
6011                  dev->features & (NETIF_F_LOOPBACK) ?
6012                         "loopback " : "",
6013                  id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
6014                  id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
6015                  id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
6016                  np->gigabit == PHY_GIGABIT ? "gbit " : "",
6017                  np->need_linktimer ? "lnktim " : "",
6018                  np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
6019                  np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
6020                  np->desc_ver);
6021
6022         return 0;
6023
6024 out_error:
6025         if (phystate_orig)
6026                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
6027 out_freering:
6028         free_rings(dev);
6029 out_unmap:
6030         iounmap(get_hwbase(dev));
6031 out_relreg:
6032         pci_release_regions(pci_dev);
6033 out_disable:
6034         pci_disable_device(pci_dev);
6035 out_free:
6036         free_netdev(dev);
6037 out:
6038         return err;
6039 }
6040
6041 static void nv_restore_phy(struct net_device *dev)
6042 {
6043         struct fe_priv *np = netdev_priv(dev);
6044         u16 phy_reserved, mii_control;
6045
6046         if (np->phy_oui == PHY_OUI_REALTEK &&
6047             np->phy_model == PHY_MODEL_REALTEK_8201 &&
6048             phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6049                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6050                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6051                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6052                 phy_reserved |= PHY_REALTEK_INIT8;
6053                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6054                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6055
6056                 /* restart auto negotiation */
6057                 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6058                 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6059                 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6060         }
6061 }
6062
6063 static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6064 {
6065         struct net_device *dev = pci_get_drvdata(pci_dev);
6066         struct fe_priv *np = netdev_priv(dev);
6067         u8 __iomem *base = get_hwbase(dev);
6068
6069         /* special op: write back the misordered MAC address - otherwise
6070          * the next nv_probe would see a wrong address.
6071          */
6072         writel(np->orig_mac[0], base + NvRegMacAddrA);
6073         writel(np->orig_mac[1], base + NvRegMacAddrB);
6074         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6075                base + NvRegTransmitPoll);
6076 }
6077
6078 static void nv_remove(struct pci_dev *pci_dev)
6079 {
6080         struct net_device *dev = pci_get_drvdata(pci_dev);
6081
6082         unregister_netdev(dev);
6083
6084         nv_restore_mac_addr(pci_dev);
6085
6086         /* restore any phy related changes */
6087         nv_restore_phy(dev);
6088
6089         nv_mgmt_release_sema(dev);
6090
6091         /* free all structures */
6092         free_rings(dev);
6093         iounmap(get_hwbase(dev));
6094         pci_release_regions(pci_dev);
6095         pci_disable_device(pci_dev);
6096         free_netdev(dev);
6097 }
6098
6099 #ifdef CONFIG_PM_SLEEP
6100 static int nv_suspend(struct device *device)
6101 {
6102         struct pci_dev *pdev = to_pci_dev(device);
6103         struct net_device *dev = pci_get_drvdata(pdev);
6104         struct fe_priv *np = netdev_priv(dev);
6105         u8 __iomem *base = get_hwbase(dev);
6106         int i;
6107
6108         if (netif_running(dev)) {
6109                 /* Gross. */
6110                 nv_close(dev);
6111         }
6112         netif_device_detach(dev);
6113
6114         /* save non-pci configuration space */
6115         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6116                 np->saved_config_space[i] = readl(base + i*sizeof(u32));
6117
6118         return 0;
6119 }
6120
6121 static int nv_resume(struct device *device)
6122 {
6123         struct pci_dev *pdev = to_pci_dev(device);
6124         struct net_device *dev = pci_get_drvdata(pdev);
6125         struct fe_priv *np = netdev_priv(dev);
6126         u8 __iomem *base = get_hwbase(dev);
6127         int i, rc = 0;
6128
6129         /* restore non-pci configuration space */
6130         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6131                 writel(np->saved_config_space[i], base+i*sizeof(u32));
6132
6133         if (np->driver_data & DEV_NEED_MSI_FIX)
6134                 pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6135
6136         /* restore phy state, including autoneg */
6137         phy_init(dev);
6138
6139         netif_device_attach(dev);
6140         if (netif_running(dev)) {
6141                 rc = nv_open(dev);
6142                 nv_set_multicast(dev);
6143         }
6144         return rc;
6145 }
6146
6147 static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6148 #define NV_PM_OPS (&nv_pm_ops)
6149
6150 #else
6151 #define NV_PM_OPS NULL
6152 #endif /* CONFIG_PM_SLEEP */
6153
6154 #ifdef CONFIG_PM
6155 static void nv_shutdown(struct pci_dev *pdev)
6156 {
6157         struct net_device *dev = pci_get_drvdata(pdev);
6158         struct fe_priv *np = netdev_priv(dev);
6159
6160         if (netif_running(dev))
6161                 nv_close(dev);
6162
6163         /*
6164          * Restore the MAC so a kernel started by kexec won't get confused.
6165          * If we really go for poweroff, we must not restore the MAC,
6166          * otherwise the MAC for WOL will be reversed at least on some boards.
6167          */
6168         if (system_state != SYSTEM_POWER_OFF)
6169                 nv_restore_mac_addr(pdev);
6170
6171         pci_disable_device(pdev);
6172         /*
6173          * Apparently it is not possible to reinitialise from D3 hot,
6174          * only put the device into D3 if we really go for poweroff.
6175          */
6176         if (system_state == SYSTEM_POWER_OFF) {
6177                 pci_wake_from_d3(pdev, np->wolenabled);
6178                 pci_set_power_state(pdev, PCI_D3hot);
6179         }
6180 }
6181 #else
6182 #define nv_shutdown NULL
6183 #endif /* CONFIG_PM */
6184
6185 static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
6186         {       /* nForce Ethernet Controller */
6187                 PCI_DEVICE(0x10DE, 0x01C3),
6188                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6189         },
6190         {       /* nForce2 Ethernet Controller */
6191                 PCI_DEVICE(0x10DE, 0x0066),
6192                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6193         },
6194         {       /* nForce3 Ethernet Controller */
6195                 PCI_DEVICE(0x10DE, 0x00D6),
6196                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6197         },
6198         {       /* nForce3 Ethernet Controller */
6199                 PCI_DEVICE(0x10DE, 0x0086),
6200                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6201         },
6202         {       /* nForce3 Ethernet Controller */
6203                 PCI_DEVICE(0x10DE, 0x008C),
6204                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6205         },
6206         {       /* nForce3 Ethernet Controller */
6207                 PCI_DEVICE(0x10DE, 0x00E6),
6208                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6209         },
6210         {       /* nForce3 Ethernet Controller */
6211                 PCI_DEVICE(0x10DE, 0x00DF),
6212                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6213         },
6214         {       /* CK804 Ethernet Controller */
6215                 PCI_DEVICE(0x10DE, 0x0056),
6216                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6217         },
6218         {       /* CK804 Ethernet Controller */
6219                 PCI_DEVICE(0x10DE, 0x0057),
6220                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6221         },
6222         {       /* MCP04 Ethernet Controller */
6223                 PCI_DEVICE(0x10DE, 0x0037),
6224                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6225         },
6226         {       /* MCP04 Ethernet Controller */
6227                 PCI_DEVICE(0x10DE, 0x0038),
6228                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6229         },
6230         {       /* MCP51 Ethernet Controller */
6231                 PCI_DEVICE(0x10DE, 0x0268),
6232                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6233         },
6234         {       /* MCP51 Ethernet Controller */
6235                 PCI_DEVICE(0x10DE, 0x0269),
6236                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6237         },
6238         {       /* MCP55 Ethernet Controller */
6239                 PCI_DEVICE(0x10DE, 0x0372),
6240                 .driver_data = 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_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6241         },
6242         {       /* MCP55 Ethernet Controller */
6243                 PCI_DEVICE(0x10DE, 0x0373),
6244                 .driver_data = 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_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6245         },
6246         {       /* MCP61 Ethernet Controller */
6247                 PCI_DEVICE(0x10DE, 0x03E5),
6248                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6249         },
6250         {       /* MCP61 Ethernet Controller */
6251                 PCI_DEVICE(0x10DE, 0x03E6),
6252                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6253         },
6254         {       /* MCP61 Ethernet Controller */
6255                 PCI_DEVICE(0x10DE, 0x03EE),
6256                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6257         },
6258         {       /* MCP61 Ethernet Controller */
6259                 PCI_DEVICE(0x10DE, 0x03EF),
6260                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6261         },
6262         {       /* MCP65 Ethernet Controller */
6263                 PCI_DEVICE(0x10DE, 0x0450),
6264                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6265         },
6266         {       /* MCP65 Ethernet Controller */
6267                 PCI_DEVICE(0x10DE, 0x0451),
6268                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6269         },
6270         {       /* MCP65 Ethernet Controller */
6271                 PCI_DEVICE(0x10DE, 0x0452),
6272                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6273         },
6274         {       /* MCP65 Ethernet Controller */
6275                 PCI_DEVICE(0x10DE, 0x0453),
6276                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6277         },
6278         {       /* MCP67 Ethernet Controller */
6279                 PCI_DEVICE(0x10DE, 0x054C),
6280                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6281         },
6282         {       /* MCP67 Ethernet Controller */
6283                 PCI_DEVICE(0x10DE, 0x054D),
6284                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6285         },
6286         {       /* MCP67 Ethernet Controller */
6287                 PCI_DEVICE(0x10DE, 0x054E),
6288                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6289         },
6290         {       /* MCP67 Ethernet Controller */
6291                 PCI_DEVICE(0x10DE, 0x054F),
6292                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6293         },
6294         {       /* MCP73 Ethernet Controller */
6295                 PCI_DEVICE(0x10DE, 0x07DC),
6296                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6297         },
6298         {       /* MCP73 Ethernet Controller */
6299                 PCI_DEVICE(0x10DE, 0x07DD),
6300                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6301         },
6302         {       /* MCP73 Ethernet Controller */
6303                 PCI_DEVICE(0x10DE, 0x07DE),
6304                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6305         },
6306         {       /* MCP73 Ethernet Controller */
6307                 PCI_DEVICE(0x10DE, 0x07DF),
6308                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6309         },
6310         {       /* MCP77 Ethernet Controller */
6311                 PCI_DEVICE(0x10DE, 0x0760),
6312                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6313         },
6314         {       /* MCP77 Ethernet Controller */
6315                 PCI_DEVICE(0x10DE, 0x0761),
6316                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6317         },
6318         {       /* MCP77 Ethernet Controller */
6319                 PCI_DEVICE(0x10DE, 0x0762),
6320                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6321         },
6322         {       /* MCP77 Ethernet Controller */
6323                 PCI_DEVICE(0x10DE, 0x0763),
6324                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6325         },
6326         {       /* MCP79 Ethernet Controller */
6327                 PCI_DEVICE(0x10DE, 0x0AB0),
6328                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6329         },
6330         {       /* MCP79 Ethernet Controller */
6331                 PCI_DEVICE(0x10DE, 0x0AB1),
6332                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6333         },
6334         {       /* MCP79 Ethernet Controller */
6335                 PCI_DEVICE(0x10DE, 0x0AB2),
6336                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6337         },
6338         {       /* MCP79 Ethernet Controller */
6339                 PCI_DEVICE(0x10DE, 0x0AB3),
6340                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6341         },
6342         {       /* MCP89 Ethernet Controller */
6343                 PCI_DEVICE(0x10DE, 0x0D7D),
6344                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX,
6345         },
6346         {0,},
6347 };
6348
6349 static struct pci_driver forcedeth_pci_driver = {
6350         .name           = DRV_NAME,
6351         .id_table       = pci_tbl,
6352         .probe          = nv_probe,
6353         .remove         = nv_remove,
6354         .shutdown       = nv_shutdown,
6355         .driver.pm      = NV_PM_OPS,
6356 };
6357
6358 module_param(max_interrupt_work, int, 0);
6359 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6360 module_param(optimization_mode, int, 0);
6361 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. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
6362 module_param(poll_interval, int, 0);
6363 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.");
6364 module_param(msi, int, 0);
6365 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6366 module_param(msix, int, 0);
6367 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6368 module_param(dma_64bit, int, 0);
6369 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6370 module_param(phy_cross, int, 0);
6371 MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6372 module_param(phy_power_down, int, 0);
6373 MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6374 module_param(debug_tx_timeout, bool, 0);
6375 MODULE_PARM_DESC(debug_tx_timeout,
6376                  "Dump tx related registers and ring when tx_timeout happens");
6377
6378 module_pci_driver(forcedeth_pci_driver);
6379 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6380 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6381 MODULE_LICENSE("GPL");
6382 MODULE_DEVICE_TABLE(pci, pci_tbl);