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_SUBTRACT1         (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_SUBTRACT1        (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_irq(&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_irq(&np->swstats_rx_syncp, syncp_start));
1762
1763         do {
1764                 syncp_start = u64_stats_fetch_begin_irq(&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_irq(&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                         dev_kfree_skb_any(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                                 dev_kfree_skb_any(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                         dev_kfree_skb_any(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                                 dev_kfree_skb_any(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 (skb_vlan_tag_present(skb))
2466                 start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2467                                         skb_vlan_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_SUBTRACT1)
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_SUBTRACT1)
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_SUBTRACT1)
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_range(np->pci_dev,
3950                                             np->msi_x_entry,
3951                                             np->msi_flags & NV_MSI_X_VECTORS_MASK,
3952                                             np->msi_flags & NV_MSI_X_VECTORS_MASK);
3953                 if (ret > 0) {
3954                         np->msi_flags |= NV_MSI_X_ENABLED;
3955                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3956                                 /* Request irq for rx handling */
3957                                 sprintf(np->name_rx, "%s-rx", dev->name);
3958                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3959                                                   nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev);
3960                                 if (ret) {
3961                                         netdev_info(dev,
3962                                                     "request_irq failed for rx %d\n",
3963                                                     ret);
3964                                         pci_disable_msix(np->pci_dev);
3965                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3966                                         goto out_err;
3967                                 }
3968                                 /* Request irq for tx handling */
3969                                 sprintf(np->name_tx, "%s-tx", dev->name);
3970                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3971                                                   nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev);
3972                                 if (ret) {
3973                                         netdev_info(dev,
3974                                                     "request_irq failed for tx %d\n",
3975                                                     ret);
3976                                         pci_disable_msix(np->pci_dev);
3977                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3978                                         goto out_free_rx;
3979                                 }
3980                                 /* Request irq for link and timer handling */
3981                                 sprintf(np->name_other, "%s-other", dev->name);
3982                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3983                                                   nv_nic_irq_other, IRQF_SHARED, np->name_other, dev);
3984                                 if (ret) {
3985                                         netdev_info(dev,
3986                                                     "request_irq failed for link %d\n",
3987                                                     ret);
3988                                         pci_disable_msix(np->pci_dev);
3989                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3990                                         goto out_free_tx;
3991                                 }
3992                                 /* map interrupts to their respective vector */
3993                                 writel(0, base + NvRegMSIXMap0);
3994                                 writel(0, base + NvRegMSIXMap1);
3995                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3996                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3997                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3998                         } else {
3999                                 /* Request irq for all interrupts */
4000                                 ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector,
4001                                                   handler, IRQF_SHARED, dev->name, dev);
4002                                 if (ret) {
4003                                         netdev_info(dev,
4004                                                     "request_irq failed %d\n",
4005                                                     ret);
4006                                         pci_disable_msix(np->pci_dev);
4007                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
4008                                         goto out_err;
4009                                 }
4010
4011                                 /* map interrupts to vector 0 */
4012                                 writel(0, base + NvRegMSIXMap0);
4013                                 writel(0, base + NvRegMSIXMap1);
4014                         }
4015                         netdev_info(dev, "MSI-X enabled\n");
4016                         return 0;
4017                 }
4018         }
4019         if (np->msi_flags & NV_MSI_CAPABLE) {
4020                 ret = pci_enable_msi(np->pci_dev);
4021                 if (ret == 0) {
4022                         np->msi_flags |= NV_MSI_ENABLED;
4023                         ret = request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev);
4024                         if (ret) {
4025                                 netdev_info(dev, "request_irq failed %d\n",
4026                                             ret);
4027                                 pci_disable_msi(np->pci_dev);
4028                                 np->msi_flags &= ~NV_MSI_ENABLED;
4029                                 goto out_err;
4030                         }
4031
4032                         /* map interrupts to vector 0 */
4033                         writel(0, base + NvRegMSIMap0);
4034                         writel(0, base + NvRegMSIMap1);
4035                         /* enable msi vector 0 */
4036                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
4037                         netdev_info(dev, "MSI enabled\n");
4038                         return 0;
4039                 }
4040         }
4041
4042         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
4043                 goto out_err;
4044
4045         return 0;
4046 out_free_tx:
4047         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4048 out_free_rx:
4049         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4050 out_err:
4051         return 1;
4052 }
4053
4054 static void nv_free_irq(struct net_device *dev)
4055 {
4056         struct fe_priv *np = get_nvpriv(dev);
4057         int i;
4058
4059         if (np->msi_flags & NV_MSI_X_ENABLED) {
4060                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4061                         free_irq(np->msi_x_entry[i].vector, dev);
4062                 pci_disable_msix(np->pci_dev);
4063                 np->msi_flags &= ~NV_MSI_X_ENABLED;
4064         } else {
4065                 free_irq(np->pci_dev->irq, dev);
4066                 if (np->msi_flags & NV_MSI_ENABLED) {
4067                         pci_disable_msi(np->pci_dev);
4068                         np->msi_flags &= ~NV_MSI_ENABLED;
4069                 }
4070         }
4071 }
4072
4073 static void nv_do_nic_poll(unsigned long data)
4074 {
4075         struct net_device *dev = (struct net_device *) data;
4076         struct fe_priv *np = netdev_priv(dev);
4077         u8 __iomem *base = get_hwbase(dev);
4078         u32 mask = 0;
4079
4080         /*
4081          * First disable irq(s) and then
4082          * reenable interrupts on the nic, we have to do this before calling
4083          * nv_nic_irq because that may decide to do otherwise
4084          */
4085
4086         if (!using_multi_irqs(dev)) {
4087                 if (np->msi_flags & NV_MSI_X_ENABLED)
4088                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4089                 else
4090                         disable_irq_lockdep(np->pci_dev->irq);
4091                 mask = np->irqmask;
4092         } else {
4093                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4094                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4095                         mask |= NVREG_IRQ_RX_ALL;
4096                 }
4097                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4098                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4099                         mask |= NVREG_IRQ_TX_ALL;
4100                 }
4101                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4102                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4103                         mask |= NVREG_IRQ_OTHER;
4104                 }
4105         }
4106         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
4107
4108         if (np->recover_error) {
4109                 np->recover_error = 0;
4110                 netdev_info(dev, "MAC in recoverable error state\n");
4111                 if (netif_running(dev)) {
4112                         netif_tx_lock_bh(dev);
4113                         netif_addr_lock(dev);
4114                         spin_lock(&np->lock);
4115                         /* stop engines */
4116                         nv_stop_rxtx(dev);
4117                         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4118                                 nv_mac_reset(dev);
4119                         nv_txrx_reset(dev);
4120                         /* drain rx queue */
4121                         nv_drain_rxtx(dev);
4122                         /* reinit driver view of the rx queue */
4123                         set_bufsize(dev);
4124                         if (nv_init_ring(dev)) {
4125                                 if (!np->in_shutdown)
4126                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4127                         }
4128                         /* reinit nic view of the rx queue */
4129                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4130                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4131                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4132                                 base + NvRegRingSizes);
4133                         pci_push(base);
4134                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4135                         pci_push(base);
4136                         /* clear interrupts */
4137                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4138                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4139                         else
4140                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4141
4142                         /* restart rx engine */
4143                         nv_start_rxtx(dev);
4144                         spin_unlock(&np->lock);
4145                         netif_addr_unlock(dev);
4146                         netif_tx_unlock_bh(dev);
4147                 }
4148         }
4149
4150         writel(mask, base + NvRegIrqMask);
4151         pci_push(base);
4152
4153         if (!using_multi_irqs(dev)) {
4154                 np->nic_poll_irq = 0;
4155                 if (nv_optimized(np))
4156                         nv_nic_irq_optimized(0, dev);
4157                 else
4158                         nv_nic_irq(0, dev);
4159                 if (np->msi_flags & NV_MSI_X_ENABLED)
4160                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4161                 else
4162                         enable_irq_lockdep(np->pci_dev->irq);
4163         } else {
4164                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4165                         np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4166                         nv_nic_irq_rx(0, dev);
4167                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4168                 }
4169                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4170                         np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4171                         nv_nic_irq_tx(0, dev);
4172                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4173                 }
4174                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4175                         np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4176                         nv_nic_irq_other(0, dev);
4177                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4178                 }
4179         }
4180
4181 }
4182
4183 #ifdef CONFIG_NET_POLL_CONTROLLER
4184 static void nv_poll_controller(struct net_device *dev)
4185 {
4186         nv_do_nic_poll((unsigned long) dev);
4187 }
4188 #endif
4189
4190 static void nv_do_stats_poll(unsigned long data)
4191         __acquires(&netdev_priv(dev)->hwstats_lock)
4192         __releases(&netdev_priv(dev)->hwstats_lock)
4193 {
4194         struct net_device *dev = (struct net_device *) data;
4195         struct fe_priv *np = netdev_priv(dev);
4196
4197         /* If lock is currently taken, the stats are being refreshed
4198          * and hence fresh enough */
4199         if (spin_trylock(&np->hwstats_lock)) {
4200                 nv_update_stats(dev);
4201                 spin_unlock(&np->hwstats_lock);
4202         }
4203
4204         if (!np->in_shutdown)
4205                 mod_timer(&np->stats_poll,
4206                         round_jiffies(jiffies + STATS_INTERVAL));
4207 }
4208
4209 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4210 {
4211         struct fe_priv *np = netdev_priv(dev);
4212         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4213         strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4214         strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4215 }
4216
4217 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4218 {
4219         struct fe_priv *np = netdev_priv(dev);
4220         wolinfo->supported = WAKE_MAGIC;
4221
4222         spin_lock_irq(&np->lock);
4223         if (np->wolenabled)
4224                 wolinfo->wolopts = WAKE_MAGIC;
4225         spin_unlock_irq(&np->lock);
4226 }
4227
4228 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4229 {
4230         struct fe_priv *np = netdev_priv(dev);
4231         u8 __iomem *base = get_hwbase(dev);
4232         u32 flags = 0;
4233
4234         if (wolinfo->wolopts == 0) {
4235                 np->wolenabled = 0;
4236         } else if (wolinfo->wolopts & WAKE_MAGIC) {
4237                 np->wolenabled = 1;
4238                 flags = NVREG_WAKEUPFLAGS_ENABLE;
4239         }
4240         if (netif_running(dev)) {
4241                 spin_lock_irq(&np->lock);
4242                 writel(flags, base + NvRegWakeUpFlags);
4243                 spin_unlock_irq(&np->lock);
4244         }
4245         device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4246         return 0;
4247 }
4248
4249 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4250 {
4251         struct fe_priv *np = netdev_priv(dev);
4252         u32 speed;
4253         int adv;
4254
4255         spin_lock_irq(&np->lock);
4256         ecmd->port = PORT_MII;
4257         if (!netif_running(dev)) {
4258                 /* We do not track link speed / duplex setting if the
4259                  * interface is disabled. Force a link check */
4260                 if (nv_update_linkspeed(dev)) {
4261                         if (!netif_carrier_ok(dev))
4262                                 netif_carrier_on(dev);
4263                 } else {
4264                         if (netif_carrier_ok(dev))
4265                                 netif_carrier_off(dev);
4266                 }
4267         }
4268
4269         if (netif_carrier_ok(dev)) {
4270                 switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4271                 case NVREG_LINKSPEED_10:
4272                         speed = SPEED_10;
4273                         break;
4274                 case NVREG_LINKSPEED_100:
4275                         speed = SPEED_100;
4276                         break;
4277                 case NVREG_LINKSPEED_1000:
4278                         speed = SPEED_1000;
4279                         break;
4280                 default:
4281                         speed = -1;
4282                         break;
4283                 }
4284                 ecmd->duplex = DUPLEX_HALF;
4285                 if (np->duplex)
4286                         ecmd->duplex = DUPLEX_FULL;
4287         } else {
4288                 speed = SPEED_UNKNOWN;
4289                 ecmd->duplex = DUPLEX_UNKNOWN;
4290         }
4291         ethtool_cmd_speed_set(ecmd, speed);
4292         ecmd->autoneg = np->autoneg;
4293
4294         ecmd->advertising = ADVERTISED_MII;
4295         if (np->autoneg) {
4296                 ecmd->advertising |= ADVERTISED_Autoneg;
4297                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4298                 if (adv & ADVERTISE_10HALF)
4299                         ecmd->advertising |= ADVERTISED_10baseT_Half;
4300                 if (adv & ADVERTISE_10FULL)
4301                         ecmd->advertising |= ADVERTISED_10baseT_Full;
4302                 if (adv & ADVERTISE_100HALF)
4303                         ecmd->advertising |= ADVERTISED_100baseT_Half;
4304                 if (adv & ADVERTISE_100FULL)
4305                         ecmd->advertising |= ADVERTISED_100baseT_Full;
4306                 if (np->gigabit == PHY_GIGABIT) {
4307                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4308                         if (adv & ADVERTISE_1000FULL)
4309                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4310                 }
4311         }
4312         ecmd->supported = (SUPPORTED_Autoneg |
4313                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4314                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4315                 SUPPORTED_MII);
4316         if (np->gigabit == PHY_GIGABIT)
4317                 ecmd->supported |= SUPPORTED_1000baseT_Full;
4318
4319         ecmd->phy_address = np->phyaddr;
4320         ecmd->transceiver = XCVR_EXTERNAL;
4321
4322         /* ignore maxtxpkt, maxrxpkt for now */
4323         spin_unlock_irq(&np->lock);
4324         return 0;
4325 }
4326
4327 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4328 {
4329         struct fe_priv *np = netdev_priv(dev);
4330         u32 speed = ethtool_cmd_speed(ecmd);
4331
4332         if (ecmd->port != PORT_MII)
4333                 return -EINVAL;
4334         if (ecmd->transceiver != XCVR_EXTERNAL)
4335                 return -EINVAL;
4336         if (ecmd->phy_address != np->phyaddr) {
4337                 /* TODO: support switching between multiple phys. Should be
4338                  * trivial, but not enabled due to lack of test hardware. */
4339                 return -EINVAL;
4340         }
4341         if (ecmd->autoneg == AUTONEG_ENABLE) {
4342                 u32 mask;
4343
4344                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4345                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4346                 if (np->gigabit == PHY_GIGABIT)
4347                         mask |= ADVERTISED_1000baseT_Full;
4348
4349                 if ((ecmd->advertising & mask) == 0)
4350                         return -EINVAL;
4351
4352         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4353                 /* Note: autonegotiation disable, speed 1000 intentionally
4354                  * forbidden - no one should need that. */
4355
4356                 if (speed != SPEED_10 && speed != SPEED_100)
4357                         return -EINVAL;
4358                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4359                         return -EINVAL;
4360         } else {
4361                 return -EINVAL;
4362         }
4363
4364         netif_carrier_off(dev);
4365         if (netif_running(dev)) {
4366                 unsigned long flags;
4367
4368                 nv_disable_irq(dev);
4369                 netif_tx_lock_bh(dev);
4370                 netif_addr_lock(dev);
4371                 /* with plain spinlock lockdep complains */
4372                 spin_lock_irqsave(&np->lock, flags);
4373                 /* stop engines */
4374                 /* FIXME:
4375                  * this can take some time, and interrupts are disabled
4376                  * due to spin_lock_irqsave, but let's hope no daemon
4377                  * is going to change the settings very often...
4378                  * Worst case:
4379                  * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4380                  * + some minor delays, which is up to a second approximately
4381                  */
4382                 nv_stop_rxtx(dev);
4383                 spin_unlock_irqrestore(&np->lock, flags);
4384                 netif_addr_unlock(dev);
4385                 netif_tx_unlock_bh(dev);
4386         }
4387
4388         if (ecmd->autoneg == AUTONEG_ENABLE) {
4389                 int adv, bmcr;
4390
4391                 np->autoneg = 1;
4392
4393                 /* advertise only what has been requested */
4394                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4395                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4396                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4397                         adv |= ADVERTISE_10HALF;
4398                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4399                         adv |= ADVERTISE_10FULL;
4400                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4401                         adv |= ADVERTISE_100HALF;
4402                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4403                         adv |= ADVERTISE_100FULL;
4404                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisements but disable tx pause */
4405                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4406                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4407                         adv |=  ADVERTISE_PAUSE_ASYM;
4408                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4409
4410                 if (np->gigabit == PHY_GIGABIT) {
4411                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4412                         adv &= ~ADVERTISE_1000FULL;
4413                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4414                                 adv |= ADVERTISE_1000FULL;
4415                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4416                 }
4417
4418                 if (netif_running(dev))
4419                         netdev_info(dev, "link down\n");
4420                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4421                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4422                         bmcr |= BMCR_ANENABLE;
4423                         /* reset the phy in order for settings to stick,
4424                          * and cause autoneg to start */
4425                         if (phy_reset(dev, bmcr)) {
4426                                 netdev_info(dev, "phy reset failed\n");
4427                                 return -EINVAL;
4428                         }
4429                 } else {
4430                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4431                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4432                 }
4433         } else {
4434                 int adv, bmcr;
4435
4436                 np->autoneg = 0;
4437
4438                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4439                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4440                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4441                         adv |= ADVERTISE_10HALF;
4442                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4443                         adv |= ADVERTISE_10FULL;
4444                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4445                         adv |= ADVERTISE_100HALF;
4446                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4447                         adv |= ADVERTISE_100FULL;
4448                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4449                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4450                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4451                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4452                 }
4453                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4454                         adv |=  ADVERTISE_PAUSE_ASYM;
4455                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4456                 }
4457                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4458                 np->fixed_mode = adv;
4459
4460                 if (np->gigabit == PHY_GIGABIT) {
4461                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4462                         adv &= ~ADVERTISE_1000FULL;
4463                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4464                 }
4465
4466                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4467                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4468                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4469                         bmcr |= BMCR_FULLDPLX;
4470                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4471                         bmcr |= BMCR_SPEED100;
4472                 if (np->phy_oui == PHY_OUI_MARVELL) {
4473                         /* reset the phy in order for forced mode settings to stick */
4474                         if (phy_reset(dev, bmcr)) {
4475                                 netdev_info(dev, "phy reset failed\n");
4476                                 return -EINVAL;
4477                         }
4478                 } else {
4479                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4480                         if (netif_running(dev)) {
4481                                 /* Wait a bit and then reconfigure the nic. */
4482                                 udelay(10);
4483                                 nv_linkchange(dev);
4484                         }
4485                 }
4486         }
4487
4488         if (netif_running(dev)) {
4489                 nv_start_rxtx(dev);
4490                 nv_enable_irq(dev);
4491         }
4492
4493         return 0;
4494 }
4495
4496 #define FORCEDETH_REGS_VER      1
4497
4498 static int nv_get_regs_len(struct net_device *dev)
4499 {
4500         struct fe_priv *np = netdev_priv(dev);
4501         return np->register_size;
4502 }
4503
4504 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4505 {
4506         struct fe_priv *np = netdev_priv(dev);
4507         u8 __iomem *base = get_hwbase(dev);
4508         u32 *rbuf = buf;
4509         int i;
4510
4511         regs->version = FORCEDETH_REGS_VER;
4512         spin_lock_irq(&np->lock);
4513         for (i = 0; i < np->register_size/sizeof(u32); i++)
4514                 rbuf[i] = readl(base + i*sizeof(u32));
4515         spin_unlock_irq(&np->lock);
4516 }
4517
4518 static int nv_nway_reset(struct net_device *dev)
4519 {
4520         struct fe_priv *np = netdev_priv(dev);
4521         int ret;
4522
4523         if (np->autoneg) {
4524                 int bmcr;
4525
4526                 netif_carrier_off(dev);
4527                 if (netif_running(dev)) {
4528                         nv_disable_irq(dev);
4529                         netif_tx_lock_bh(dev);
4530                         netif_addr_lock(dev);
4531                         spin_lock(&np->lock);
4532                         /* stop engines */
4533                         nv_stop_rxtx(dev);
4534                         spin_unlock(&np->lock);
4535                         netif_addr_unlock(dev);
4536                         netif_tx_unlock_bh(dev);
4537                         netdev_info(dev, "link down\n");
4538                 }
4539
4540                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4541                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4542                         bmcr |= BMCR_ANENABLE;
4543                         /* reset the phy in order for settings to stick*/
4544                         if (phy_reset(dev, bmcr)) {
4545                                 netdev_info(dev, "phy reset failed\n");
4546                                 return -EINVAL;
4547                         }
4548                 } else {
4549                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4550                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4551                 }
4552
4553                 if (netif_running(dev)) {
4554                         nv_start_rxtx(dev);
4555                         nv_enable_irq(dev);
4556                 }
4557                 ret = 0;
4558         } else {
4559                 ret = -EINVAL;
4560         }
4561
4562         return ret;
4563 }
4564
4565 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4566 {
4567         struct fe_priv *np = netdev_priv(dev);
4568
4569         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4570         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4571
4572         ring->rx_pending = np->rx_ring_size;
4573         ring->tx_pending = np->tx_ring_size;
4574 }
4575
4576 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4577 {
4578         struct fe_priv *np = netdev_priv(dev);
4579         u8 __iomem *base = get_hwbase(dev);
4580         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4581         dma_addr_t ring_addr;
4582
4583         if (ring->rx_pending < RX_RING_MIN ||
4584             ring->tx_pending < TX_RING_MIN ||
4585             ring->rx_mini_pending != 0 ||
4586             ring->rx_jumbo_pending != 0 ||
4587             (np->desc_ver == DESC_VER_1 &&
4588              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4589               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4590             (np->desc_ver != DESC_VER_1 &&
4591              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4592               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4593                 return -EINVAL;
4594         }
4595
4596         /* allocate new rings */
4597         if (!nv_optimized(np)) {
4598                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4599                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4600                                             &ring_addr);
4601         } else {
4602                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4603                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4604                                             &ring_addr);
4605         }
4606         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4607         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4608         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4609                 /* fall back to old rings */
4610                 if (!nv_optimized(np)) {
4611                         if (rxtx_ring)
4612                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4613                                                     rxtx_ring, ring_addr);
4614                 } else {
4615                         if (rxtx_ring)
4616                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4617                                                     rxtx_ring, ring_addr);
4618                 }
4619
4620                 kfree(rx_skbuff);
4621                 kfree(tx_skbuff);
4622                 goto exit;
4623         }
4624
4625         if (netif_running(dev)) {
4626                 nv_disable_irq(dev);
4627                 nv_napi_disable(dev);
4628                 netif_tx_lock_bh(dev);
4629                 netif_addr_lock(dev);
4630                 spin_lock(&np->lock);
4631                 /* stop engines */
4632                 nv_stop_rxtx(dev);
4633                 nv_txrx_reset(dev);
4634                 /* drain queues */
4635                 nv_drain_rxtx(dev);
4636                 /* delete queues */
4637                 free_rings(dev);
4638         }
4639
4640         /* set new values */
4641         np->rx_ring_size = ring->rx_pending;
4642         np->tx_ring_size = ring->tx_pending;
4643
4644         if (!nv_optimized(np)) {
4645                 np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4646                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4647         } else {
4648                 np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4649                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4650         }
4651         np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4652         np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4653         np->ring_addr = ring_addr;
4654
4655         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4656         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4657
4658         if (netif_running(dev)) {
4659                 /* reinit driver view of the queues */
4660                 set_bufsize(dev);
4661                 if (nv_init_ring(dev)) {
4662                         if (!np->in_shutdown)
4663                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4664                 }
4665
4666                 /* reinit nic view of the queues */
4667                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4668                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4669                 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4670                         base + NvRegRingSizes);
4671                 pci_push(base);
4672                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4673                 pci_push(base);
4674
4675                 /* restart engines */
4676                 nv_start_rxtx(dev);
4677                 spin_unlock(&np->lock);
4678                 netif_addr_unlock(dev);
4679                 netif_tx_unlock_bh(dev);
4680                 nv_napi_enable(dev);
4681                 nv_enable_irq(dev);
4682         }
4683         return 0;
4684 exit:
4685         return -ENOMEM;
4686 }
4687
4688 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4689 {
4690         struct fe_priv *np = netdev_priv(dev);
4691
4692         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4693         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4694         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4695 }
4696
4697 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4698 {
4699         struct fe_priv *np = netdev_priv(dev);
4700         int adv, bmcr;
4701
4702         if ((!np->autoneg && np->duplex == 0) ||
4703             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4704                 netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4705                 return -EINVAL;
4706         }
4707         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4708                 netdev_info(dev, "hardware does not support tx pause frames\n");
4709                 return -EINVAL;
4710         }
4711
4712         netif_carrier_off(dev);
4713         if (netif_running(dev)) {
4714                 nv_disable_irq(dev);
4715                 netif_tx_lock_bh(dev);
4716                 netif_addr_lock(dev);
4717                 spin_lock(&np->lock);
4718                 /* stop engines */
4719                 nv_stop_rxtx(dev);
4720                 spin_unlock(&np->lock);
4721                 netif_addr_unlock(dev);
4722                 netif_tx_unlock_bh(dev);
4723         }
4724
4725         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4726         if (pause->rx_pause)
4727                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4728         if (pause->tx_pause)
4729                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4730
4731         if (np->autoneg && pause->autoneg) {
4732                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4733
4734                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4735                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4736                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4737                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4738                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4739                         adv |=  ADVERTISE_PAUSE_ASYM;
4740                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4741
4742                 if (netif_running(dev))
4743                         netdev_info(dev, "link down\n");
4744                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4745                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4746                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4747         } else {
4748                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4749                 if (pause->rx_pause)
4750                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4751                 if (pause->tx_pause)
4752                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4753
4754                 if (!netif_running(dev))
4755                         nv_update_linkspeed(dev);
4756                 else
4757                         nv_update_pause(dev, np->pause_flags);
4758         }
4759
4760         if (netif_running(dev)) {
4761                 nv_start_rxtx(dev);
4762                 nv_enable_irq(dev);
4763         }
4764         return 0;
4765 }
4766
4767 static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4768 {
4769         struct fe_priv *np = netdev_priv(dev);
4770         unsigned long flags;
4771         u32 miicontrol;
4772         int err, retval = 0;
4773
4774         spin_lock_irqsave(&np->lock, flags);
4775         miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4776         if (features & NETIF_F_LOOPBACK) {
4777                 if (miicontrol & BMCR_LOOPBACK) {
4778                         spin_unlock_irqrestore(&np->lock, flags);
4779                         netdev_info(dev, "Loopback already enabled\n");
4780                         return 0;
4781                 }
4782                 nv_disable_irq(dev);
4783                 /* Turn on loopback mode */
4784                 miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4785                 err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4786                 if (err) {
4787                         retval = PHY_ERROR;
4788                         spin_unlock_irqrestore(&np->lock, flags);
4789                         phy_init(dev);
4790                 } else {
4791                         if (netif_running(dev)) {
4792                                 /* Force 1000 Mbps full-duplex */
4793                                 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4794                                                                          1);
4795                                 /* Force link up */
4796                                 netif_carrier_on(dev);
4797                         }
4798                         spin_unlock_irqrestore(&np->lock, flags);
4799                         netdev_info(dev,
4800                                 "Internal PHY loopback mode enabled.\n");
4801                 }
4802         } else {
4803                 if (!(miicontrol & BMCR_LOOPBACK)) {
4804                         spin_unlock_irqrestore(&np->lock, flags);
4805                         netdev_info(dev, "Loopback already disabled\n");
4806                         return 0;
4807                 }
4808                 nv_disable_irq(dev);
4809                 /* Turn off loopback */
4810                 spin_unlock_irqrestore(&np->lock, flags);
4811                 netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4812                 phy_init(dev);
4813         }
4814         msleep(500);
4815         spin_lock_irqsave(&np->lock, flags);
4816         nv_enable_irq(dev);
4817         spin_unlock_irqrestore(&np->lock, flags);
4818
4819         return retval;
4820 }
4821
4822 static netdev_features_t nv_fix_features(struct net_device *dev,
4823         netdev_features_t features)
4824 {
4825         /* vlan is dependent on rx checksum offload */
4826         if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4827                 features |= NETIF_F_RXCSUM;
4828
4829         return features;
4830 }
4831
4832 static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4833 {
4834         struct fe_priv *np = get_nvpriv(dev);
4835
4836         spin_lock_irq(&np->lock);
4837
4838         if (features & NETIF_F_HW_VLAN_CTAG_RX)
4839                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4840         else
4841                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4842
4843         if (features & NETIF_F_HW_VLAN_CTAG_TX)
4844                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4845         else
4846                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4847
4848         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4849
4850         spin_unlock_irq(&np->lock);
4851 }
4852
4853 static int nv_set_features(struct net_device *dev, netdev_features_t features)
4854 {
4855         struct fe_priv *np = netdev_priv(dev);
4856         u8 __iomem *base = get_hwbase(dev);
4857         netdev_features_t changed = dev->features ^ features;
4858         int retval;
4859
4860         if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4861                 retval = nv_set_loopback(dev, features);
4862                 if (retval != 0)
4863                         return retval;
4864         }
4865
4866         if (changed & NETIF_F_RXCSUM) {
4867                 spin_lock_irq(&np->lock);
4868
4869                 if (features & NETIF_F_RXCSUM)
4870                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4871                 else
4872                         np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4873
4874                 if (netif_running(dev))
4875                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4876
4877                 spin_unlock_irq(&np->lock);
4878         }
4879
4880         if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
4881                 nv_vlan_mode(dev, features);
4882
4883         return 0;
4884 }
4885
4886 static int nv_get_sset_count(struct net_device *dev, int sset)
4887 {
4888         struct fe_priv *np = netdev_priv(dev);
4889
4890         switch (sset) {
4891         case ETH_SS_TEST:
4892                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4893                         return NV_TEST_COUNT_EXTENDED;
4894                 else
4895                         return NV_TEST_COUNT_BASE;
4896         case ETH_SS_STATS:
4897                 if (np->driver_data & DEV_HAS_STATISTICS_V3)
4898                         return NV_DEV_STATISTICS_V3_COUNT;
4899                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4900                         return NV_DEV_STATISTICS_V2_COUNT;
4901                 else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4902                         return NV_DEV_STATISTICS_V1_COUNT;
4903                 else
4904                         return 0;
4905         default:
4906                 return -EOPNOTSUPP;
4907         }
4908 }
4909
4910 static void nv_get_ethtool_stats(struct net_device *dev,
4911                                  struct ethtool_stats *estats, u64 *buffer)
4912         __acquires(&netdev_priv(dev)->hwstats_lock)
4913         __releases(&netdev_priv(dev)->hwstats_lock)
4914 {
4915         struct fe_priv *np = netdev_priv(dev);
4916
4917         spin_lock_bh(&np->hwstats_lock);
4918         nv_update_stats(dev);
4919         memcpy(buffer, &np->estats,
4920                nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4921         spin_unlock_bh(&np->hwstats_lock);
4922 }
4923
4924 static int nv_link_test(struct net_device *dev)
4925 {
4926         struct fe_priv *np = netdev_priv(dev);
4927         int mii_status;
4928
4929         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4930         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4931
4932         /* check phy link status */
4933         if (!(mii_status & BMSR_LSTATUS))
4934                 return 0;
4935         else
4936                 return 1;
4937 }
4938
4939 static int nv_register_test(struct net_device *dev)
4940 {
4941         u8 __iomem *base = get_hwbase(dev);
4942         int i = 0;
4943         u32 orig_read, new_read;
4944
4945         do {
4946                 orig_read = readl(base + nv_registers_test[i].reg);
4947
4948                 /* xor with mask to toggle bits */
4949                 orig_read ^= nv_registers_test[i].mask;
4950
4951                 writel(orig_read, base + nv_registers_test[i].reg);
4952
4953                 new_read = readl(base + nv_registers_test[i].reg);
4954
4955                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4956                         return 0;
4957
4958                 /* restore original value */
4959                 orig_read ^= nv_registers_test[i].mask;
4960                 writel(orig_read, base + nv_registers_test[i].reg);
4961
4962         } while (nv_registers_test[++i].reg != 0);
4963
4964         return 1;
4965 }
4966
4967 static int nv_interrupt_test(struct net_device *dev)
4968 {
4969         struct fe_priv *np = netdev_priv(dev);
4970         u8 __iomem *base = get_hwbase(dev);
4971         int ret = 1;
4972         int testcnt;
4973         u32 save_msi_flags, save_poll_interval = 0;
4974
4975         if (netif_running(dev)) {
4976                 /* free current irq */
4977                 nv_free_irq(dev);
4978                 save_poll_interval = readl(base+NvRegPollingInterval);
4979         }
4980
4981         /* flag to test interrupt handler */
4982         np->intr_test = 0;
4983
4984         /* setup test irq */
4985         save_msi_flags = np->msi_flags;
4986         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4987         np->msi_flags |= 0x001; /* setup 1 vector */
4988         if (nv_request_irq(dev, 1))
4989                 return 0;
4990
4991         /* setup timer interrupt */
4992         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4993         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4994
4995         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4996
4997         /* wait for at least one interrupt */
4998         msleep(100);
4999
5000         spin_lock_irq(&np->lock);
5001
5002         /* flag should be set within ISR */
5003         testcnt = np->intr_test;
5004         if (!testcnt)
5005                 ret = 2;
5006
5007         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5008         if (!(np->msi_flags & NV_MSI_X_ENABLED))
5009                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5010         else
5011                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5012
5013         spin_unlock_irq(&np->lock);
5014
5015         nv_free_irq(dev);
5016
5017         np->msi_flags = save_msi_flags;
5018
5019         if (netif_running(dev)) {
5020                 writel(save_poll_interval, base + NvRegPollingInterval);
5021                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5022                 /* restore original irq */
5023                 if (nv_request_irq(dev, 0))
5024                         return 0;
5025         }
5026
5027         return ret;
5028 }
5029
5030 static int nv_loopback_test(struct net_device *dev)
5031 {
5032         struct fe_priv *np = netdev_priv(dev);
5033         u8 __iomem *base = get_hwbase(dev);
5034         struct sk_buff *tx_skb, *rx_skb;
5035         dma_addr_t test_dma_addr;
5036         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
5037         u32 flags;
5038         int len, i, pkt_len;
5039         u8 *pkt_data;
5040         u32 filter_flags = 0;
5041         u32 misc1_flags = 0;
5042         int ret = 1;
5043
5044         if (netif_running(dev)) {
5045                 nv_disable_irq(dev);
5046                 filter_flags = readl(base + NvRegPacketFilterFlags);
5047                 misc1_flags = readl(base + NvRegMisc1);
5048         } else {
5049                 nv_txrx_reset(dev);
5050         }
5051
5052         /* reinit driver view of the rx queue */
5053         set_bufsize(dev);
5054         nv_init_ring(dev);
5055
5056         /* setup hardware for loopback */
5057         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5058         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5059
5060         /* reinit nic view of the rx queue */
5061         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5062         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5063         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5064                 base + NvRegRingSizes);
5065         pci_push(base);
5066
5067         /* restart rx engine */
5068         nv_start_rxtx(dev);
5069
5070         /* setup packet for tx */
5071         pkt_len = ETH_DATA_LEN;
5072         tx_skb = netdev_alloc_skb(dev, pkt_len);
5073         if (!tx_skb) {
5074                 ret = 0;
5075                 goto out;
5076         }
5077         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5078                                        skb_tailroom(tx_skb),
5079                                        PCI_DMA_FROMDEVICE);
5080         if (pci_dma_mapping_error(np->pci_dev,
5081                                   test_dma_addr)) {
5082                 dev_kfree_skb_any(tx_skb);
5083                 goto out;
5084         }
5085         pkt_data = skb_put(tx_skb, pkt_len);
5086         for (i = 0; i < pkt_len; i++)
5087                 pkt_data[i] = (u8)(i & 0xff);
5088
5089         if (!nv_optimized(np)) {
5090                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5091                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5092         } else {
5093                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5094                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5095                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5096         }
5097         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5098         pci_push(get_hwbase(dev));
5099
5100         msleep(500);
5101
5102         /* check for rx of the packet */
5103         if (!nv_optimized(np)) {
5104                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5105                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5106
5107         } else {
5108                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5109                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5110         }
5111
5112         if (flags & NV_RX_AVAIL) {
5113                 ret = 0;
5114         } else if (np->desc_ver == DESC_VER_1) {
5115                 if (flags & NV_RX_ERROR)
5116                         ret = 0;
5117         } else {
5118                 if (flags & NV_RX2_ERROR)
5119                         ret = 0;
5120         }
5121
5122         if (ret) {
5123                 if (len != pkt_len) {
5124                         ret = 0;
5125                 } else {
5126                         rx_skb = np->rx_skb[0].skb;
5127                         for (i = 0; i < pkt_len; i++) {
5128                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
5129                                         ret = 0;
5130                                         break;
5131                                 }
5132                         }
5133                 }
5134         }
5135
5136         pci_unmap_single(np->pci_dev, test_dma_addr,
5137                        (skb_end_pointer(tx_skb) - tx_skb->data),
5138                        PCI_DMA_TODEVICE);
5139         dev_kfree_skb_any(tx_skb);
5140  out:
5141         /* stop engines */
5142         nv_stop_rxtx(dev);
5143         nv_txrx_reset(dev);
5144         /* drain rx queue */
5145         nv_drain_rxtx(dev);
5146
5147         if (netif_running(dev)) {
5148                 writel(misc1_flags, base + NvRegMisc1);
5149                 writel(filter_flags, base + NvRegPacketFilterFlags);
5150                 nv_enable_irq(dev);
5151         }
5152
5153         return ret;
5154 }
5155
5156 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5157 {
5158         struct fe_priv *np = netdev_priv(dev);
5159         u8 __iomem *base = get_hwbase(dev);
5160         int result, count;
5161
5162         count = nv_get_sset_count(dev, ETH_SS_TEST);
5163         memset(buffer, 0, count * sizeof(u64));
5164
5165         if (!nv_link_test(dev)) {
5166                 test->flags |= ETH_TEST_FL_FAILED;
5167                 buffer[0] = 1;
5168         }
5169
5170         if (test->flags & ETH_TEST_FL_OFFLINE) {
5171                 if (netif_running(dev)) {
5172                         netif_stop_queue(dev);
5173                         nv_napi_disable(dev);
5174                         netif_tx_lock_bh(dev);
5175                         netif_addr_lock(dev);
5176                         spin_lock_irq(&np->lock);
5177                         nv_disable_hw_interrupts(dev, np->irqmask);
5178                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
5179                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5180                         else
5181                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5182                         /* stop engines */
5183                         nv_stop_rxtx(dev);
5184                         nv_txrx_reset(dev);
5185                         /* drain rx queue */
5186                         nv_drain_rxtx(dev);
5187                         spin_unlock_irq(&np->lock);
5188                         netif_addr_unlock(dev);
5189                         netif_tx_unlock_bh(dev);
5190                 }
5191
5192                 if (!nv_register_test(dev)) {
5193                         test->flags |= ETH_TEST_FL_FAILED;
5194                         buffer[1] = 1;
5195                 }
5196
5197                 result = nv_interrupt_test(dev);
5198                 if (result != 1) {
5199                         test->flags |= ETH_TEST_FL_FAILED;
5200                         buffer[2] = 1;
5201                 }
5202                 if (result == 0) {
5203                         /* bail out */
5204                         return;
5205                 }
5206
5207                 if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
5208                         test->flags |= ETH_TEST_FL_FAILED;
5209                         buffer[3] = 1;
5210                 }
5211
5212                 if (netif_running(dev)) {
5213                         /* reinit driver view of the rx queue */
5214                         set_bufsize(dev);
5215                         if (nv_init_ring(dev)) {
5216                                 if (!np->in_shutdown)
5217                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5218                         }
5219                         /* reinit nic view of the rx queue */
5220                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5221                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5222                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5223                                 base + NvRegRingSizes);
5224                         pci_push(base);
5225                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5226                         pci_push(base);
5227                         /* restart rx engine */
5228                         nv_start_rxtx(dev);
5229                         netif_start_queue(dev);
5230                         nv_napi_enable(dev);
5231                         nv_enable_hw_interrupts(dev, np->irqmask);
5232                 }
5233         }
5234 }
5235
5236 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5237 {
5238         switch (stringset) {
5239         case ETH_SS_STATS:
5240                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5241                 break;
5242         case ETH_SS_TEST:
5243                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5244                 break;
5245         }
5246 }
5247
5248 static const struct ethtool_ops ops = {
5249         .get_drvinfo = nv_get_drvinfo,
5250         .get_link = ethtool_op_get_link,
5251         .get_wol = nv_get_wol,
5252         .set_wol = nv_set_wol,
5253         .get_settings = nv_get_settings,
5254         .set_settings = nv_set_settings,
5255         .get_regs_len = nv_get_regs_len,
5256         .get_regs = nv_get_regs,
5257         .nway_reset = nv_nway_reset,
5258         .get_ringparam = nv_get_ringparam,
5259         .set_ringparam = nv_set_ringparam,
5260         .get_pauseparam = nv_get_pauseparam,
5261         .set_pauseparam = nv_set_pauseparam,
5262         .get_strings = nv_get_strings,
5263         .get_ethtool_stats = nv_get_ethtool_stats,
5264         .get_sset_count = nv_get_sset_count,
5265         .self_test = nv_self_test,
5266         .get_ts_info = ethtool_op_get_ts_info,
5267 };
5268
5269 /* The mgmt unit and driver use a semaphore to access the phy during init */
5270 static int nv_mgmt_acquire_sema(struct net_device *dev)
5271 {
5272         struct fe_priv *np = netdev_priv(dev);
5273         u8 __iomem *base = get_hwbase(dev);
5274         int i;
5275         u32 tx_ctrl, mgmt_sema;
5276
5277         for (i = 0; i < 10; i++) {
5278                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5279                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5280                         break;
5281                 msleep(500);
5282         }
5283
5284         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5285                 return 0;
5286
5287         for (i = 0; i < 2; i++) {
5288                 tx_ctrl = readl(base + NvRegTransmitterControl);
5289                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5290                 writel(tx_ctrl, base + NvRegTransmitterControl);
5291
5292                 /* verify that semaphore was acquired */
5293                 tx_ctrl = readl(base + NvRegTransmitterControl);
5294                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5295                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5296                         np->mgmt_sema = 1;
5297                         return 1;
5298                 } else
5299                         udelay(50);
5300         }
5301
5302         return 0;
5303 }
5304
5305 static void nv_mgmt_release_sema(struct net_device *dev)
5306 {
5307         struct fe_priv *np = netdev_priv(dev);
5308         u8 __iomem *base = get_hwbase(dev);
5309         u32 tx_ctrl;
5310
5311         if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5312                 if (np->mgmt_sema) {
5313                         tx_ctrl = readl(base + NvRegTransmitterControl);
5314                         tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5315                         writel(tx_ctrl, base + NvRegTransmitterControl);
5316                 }
5317         }
5318 }
5319
5320
5321 static int nv_mgmt_get_version(struct net_device *dev)
5322 {
5323         struct fe_priv *np = netdev_priv(dev);
5324         u8 __iomem *base = get_hwbase(dev);
5325         u32 data_ready = readl(base + NvRegTransmitterControl);
5326         u32 data_ready2 = 0;
5327         unsigned long start;
5328         int ready = 0;
5329
5330         writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5331         writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5332         start = jiffies;
5333         while (time_before(jiffies, start + 5*HZ)) {
5334                 data_ready2 = readl(base + NvRegTransmitterControl);
5335                 if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5336                         ready = 1;
5337                         break;
5338                 }
5339                 schedule_timeout_uninterruptible(1);
5340         }
5341
5342         if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5343                 return 0;
5344
5345         np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5346
5347         return 1;
5348 }
5349
5350 static int nv_open(struct net_device *dev)
5351 {
5352         struct fe_priv *np = netdev_priv(dev);
5353         u8 __iomem *base = get_hwbase(dev);
5354         int ret = 1;
5355         int oom, i;
5356         u32 low;
5357
5358         /* power up phy */
5359         mii_rw(dev, np->phyaddr, MII_BMCR,
5360                mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5361
5362         nv_txrx_gate(dev, false);
5363         /* erase previous misconfiguration */
5364         if (np->driver_data & DEV_HAS_POWER_CNTRL)
5365                 nv_mac_reset(dev);
5366         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5367         writel(0, base + NvRegMulticastAddrB);
5368         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5369         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5370         writel(0, base + NvRegPacketFilterFlags);
5371
5372         writel(0, base + NvRegTransmitterControl);
5373         writel(0, base + NvRegReceiverControl);
5374
5375         writel(0, base + NvRegAdapterControl);
5376
5377         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5378                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5379
5380         /* initialize descriptor rings */
5381         set_bufsize(dev);
5382         oom = nv_init_ring(dev);
5383
5384         writel(0, base + NvRegLinkSpeed);
5385         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5386         nv_txrx_reset(dev);
5387         writel(0, base + NvRegUnknownSetupReg6);
5388
5389         np->in_shutdown = 0;
5390
5391         /* give hw rings */
5392         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5393         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5394                 base + NvRegRingSizes);
5395
5396         writel(np->linkspeed, base + NvRegLinkSpeed);
5397         if (np->desc_ver == DESC_VER_1)
5398                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5399         else
5400                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5401         writel(np->txrxctl_bits, base + NvRegTxRxControl);
5402         writel(np->vlanctl_bits, base + NvRegVlanControl);
5403         pci_push(base);
5404         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5405         if (reg_delay(dev, NvRegUnknownSetupReg5,
5406                       NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5407                       NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5408                 netdev_info(dev,
5409                             "%s: SetupReg5, Bit 31 remained off\n", __func__);
5410
5411         writel(0, base + NvRegMIIMask);
5412         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5413         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5414
5415         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5416         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5417         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5418         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5419
5420         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5421
5422         get_random_bytes(&low, sizeof(low));
5423         low &= NVREG_SLOTTIME_MASK;
5424         if (np->desc_ver == DESC_VER_1) {
5425                 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5426         } else {
5427                 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5428                         /* setup legacy backoff */
5429                         writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5430                 } else {
5431                         writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5432                         nv_gear_backoff_reseed(dev);
5433                 }
5434         }
5435         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5436         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5437         if (poll_interval == -1) {
5438                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5439                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5440                 else
5441                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5442         } else
5443                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5444         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5445         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5446                         base + NvRegAdapterControl);
5447         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5448         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5449         if (np->wolenabled)
5450                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5451
5452         i = readl(base + NvRegPowerState);
5453         if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5454                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5455
5456         pci_push(base);
5457         udelay(10);
5458         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5459
5460         nv_disable_hw_interrupts(dev, np->irqmask);
5461         pci_push(base);
5462         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5463         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5464         pci_push(base);
5465
5466         if (nv_request_irq(dev, 0))
5467                 goto out_drain;
5468
5469         /* ask for interrupts */
5470         nv_enable_hw_interrupts(dev, np->irqmask);
5471
5472         spin_lock_irq(&np->lock);
5473         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5474         writel(0, base + NvRegMulticastAddrB);
5475         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5476         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5477         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5478         /* One manual link speed update: Interrupts are enabled, future link
5479          * speed changes cause interrupts and are handled by nv_link_irq().
5480          */
5481         {
5482                 u32 miistat;
5483                 miistat = readl(base + NvRegMIIStatus);
5484                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5485         }
5486         /* set linkspeed to invalid value, thus force nv_update_linkspeed
5487          * to init hw */
5488         np->linkspeed = 0;
5489         ret = nv_update_linkspeed(dev);
5490         nv_start_rxtx(dev);
5491         netif_start_queue(dev);
5492         nv_napi_enable(dev);
5493
5494         if (ret) {
5495                 netif_carrier_on(dev);
5496         } else {
5497                 netdev_info(dev, "no link during initialization\n");
5498                 netif_carrier_off(dev);
5499         }
5500         if (oom)
5501                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5502
5503         /* start statistics timer */
5504         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5505                 mod_timer(&np->stats_poll,
5506                         round_jiffies(jiffies + STATS_INTERVAL));
5507
5508         spin_unlock_irq(&np->lock);
5509
5510         /* If the loopback feature was set while the device was down, make sure
5511          * that it's set correctly now.
5512          */
5513         if (dev->features & NETIF_F_LOOPBACK)
5514                 nv_set_loopback(dev, dev->features);
5515
5516         return 0;
5517 out_drain:
5518         nv_drain_rxtx(dev);
5519         return ret;
5520 }
5521
5522 static int nv_close(struct net_device *dev)
5523 {
5524         struct fe_priv *np = netdev_priv(dev);
5525         u8 __iomem *base;
5526
5527         spin_lock_irq(&np->lock);
5528         np->in_shutdown = 1;
5529         spin_unlock_irq(&np->lock);
5530         nv_napi_disable(dev);
5531         synchronize_irq(np->pci_dev->irq);
5532
5533         del_timer_sync(&np->oom_kick);
5534         del_timer_sync(&np->nic_poll);
5535         del_timer_sync(&np->stats_poll);
5536
5537         netif_stop_queue(dev);
5538         spin_lock_irq(&np->lock);
5539         nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5540         nv_stop_rxtx(dev);
5541         nv_txrx_reset(dev);
5542
5543         /* disable interrupts on the nic or we will lock up */
5544         base = get_hwbase(dev);
5545         nv_disable_hw_interrupts(dev, np->irqmask);
5546         pci_push(base);
5547
5548         spin_unlock_irq(&np->lock);
5549
5550         nv_free_irq(dev);
5551
5552         nv_drain_rxtx(dev);
5553
5554         if (np->wolenabled || !phy_power_down) {
5555                 nv_txrx_gate(dev, false);
5556                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5557                 nv_start_rx(dev);
5558         } else {
5559                 /* power down phy */
5560                 mii_rw(dev, np->phyaddr, MII_BMCR,
5561                        mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5562                 nv_txrx_gate(dev, true);
5563         }
5564
5565         /* FIXME: power down nic */
5566
5567         return 0;
5568 }
5569
5570 static const struct net_device_ops nv_netdev_ops = {
5571         .ndo_open               = nv_open,
5572         .ndo_stop               = nv_close,
5573         .ndo_get_stats64        = nv_get_stats64,
5574         .ndo_start_xmit         = nv_start_xmit,
5575         .ndo_tx_timeout         = nv_tx_timeout,
5576         .ndo_change_mtu         = nv_change_mtu,
5577         .ndo_fix_features       = nv_fix_features,
5578         .ndo_set_features       = nv_set_features,
5579         .ndo_validate_addr      = eth_validate_addr,
5580         .ndo_set_mac_address    = nv_set_mac_address,
5581         .ndo_set_rx_mode        = nv_set_multicast,
5582 #ifdef CONFIG_NET_POLL_CONTROLLER
5583         .ndo_poll_controller    = nv_poll_controller,
5584 #endif
5585 };
5586
5587 static const struct net_device_ops nv_netdev_ops_optimized = {
5588         .ndo_open               = nv_open,
5589         .ndo_stop               = nv_close,
5590         .ndo_get_stats64        = nv_get_stats64,
5591         .ndo_start_xmit         = nv_start_xmit_optimized,
5592         .ndo_tx_timeout         = nv_tx_timeout,
5593         .ndo_change_mtu         = nv_change_mtu,
5594         .ndo_fix_features       = nv_fix_features,
5595         .ndo_set_features       = nv_set_features,
5596         .ndo_validate_addr      = eth_validate_addr,
5597         .ndo_set_mac_address    = nv_set_mac_address,
5598         .ndo_set_rx_mode        = nv_set_multicast,
5599 #ifdef CONFIG_NET_POLL_CONTROLLER
5600         .ndo_poll_controller    = nv_poll_controller,
5601 #endif
5602 };
5603
5604 static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5605 {
5606         struct net_device *dev;
5607         struct fe_priv *np;
5608         unsigned long addr;
5609         u8 __iomem *base;
5610         int err, i;
5611         u32 powerstate, txreg;
5612         u32 phystate_orig = 0, phystate;
5613         int phyinitialized = 0;
5614         static int printed_version;
5615
5616         if (!printed_version++)
5617                 pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5618                         FORCEDETH_VERSION);
5619
5620         dev = alloc_etherdev(sizeof(struct fe_priv));
5621         err = -ENOMEM;
5622         if (!dev)
5623                 goto out;
5624
5625         np = netdev_priv(dev);
5626         np->dev = dev;
5627         np->pci_dev = pci_dev;
5628         spin_lock_init(&np->lock);
5629         spin_lock_init(&np->hwstats_lock);
5630         SET_NETDEV_DEV(dev, &pci_dev->dev);
5631         u64_stats_init(&np->swstats_rx_syncp);
5632         u64_stats_init(&np->swstats_tx_syncp);
5633
5634         init_timer(&np->oom_kick);
5635         np->oom_kick.data = (unsigned long) dev;
5636         np->oom_kick.function = nv_do_rx_refill;        /* timer handler */
5637         init_timer(&np->nic_poll);
5638         np->nic_poll.data = (unsigned long) dev;
5639         np->nic_poll.function = nv_do_nic_poll; /* timer handler */
5640         init_timer_deferrable(&np->stats_poll);
5641         np->stats_poll.data = (unsigned long) dev;
5642         np->stats_poll.function = nv_do_stats_poll;     /* timer handler */
5643
5644         err = pci_enable_device(pci_dev);
5645         if (err)
5646                 goto out_free;
5647
5648         pci_set_master(pci_dev);
5649
5650         err = pci_request_regions(pci_dev, DRV_NAME);
5651         if (err < 0)
5652                 goto out_disable;
5653
5654         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5655                 np->register_size = NV_PCI_REGSZ_VER3;
5656         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5657                 np->register_size = NV_PCI_REGSZ_VER2;
5658         else
5659                 np->register_size = NV_PCI_REGSZ_VER1;
5660
5661         err = -EINVAL;
5662         addr = 0;
5663         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5664                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5665                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5666                         addr = pci_resource_start(pci_dev, i);
5667                         break;
5668                 }
5669         }
5670         if (i == DEVICE_COUNT_RESOURCE) {
5671                 dev_info(&pci_dev->dev, "Couldn't find register window\n");
5672                 goto out_relreg;
5673         }
5674
5675         /* copy of driver data */
5676         np->driver_data = id->driver_data;
5677         /* copy of device id */
5678         np->device_id = id->device;
5679
5680         /* handle different descriptor versions */
5681         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5682                 /* packet format 3: supports 40-bit addressing */
5683                 np->desc_ver = DESC_VER_3;
5684                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5685                 if (dma_64bit) {
5686                         if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5687                                 dev_info(&pci_dev->dev,
5688                                          "64-bit DMA failed, using 32-bit addressing\n");
5689                         else
5690                                 dev->features |= NETIF_F_HIGHDMA;
5691                         if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5692                                 dev_info(&pci_dev->dev,
5693                                          "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5694                         }
5695                 }
5696         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5697                 /* packet format 2: supports jumbo frames */
5698                 np->desc_ver = DESC_VER_2;
5699                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5700         } else {
5701                 /* original packet format */
5702                 np->desc_ver = DESC_VER_1;
5703                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5704         }
5705
5706         np->pkt_limit = NV_PKTLIMIT_1;
5707         if (id->driver_data & DEV_HAS_LARGEDESC)
5708                 np->pkt_limit = NV_PKTLIMIT_2;
5709
5710         if (id->driver_data & DEV_HAS_CHECKSUM) {
5711                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5712                 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5713                         NETIF_F_TSO | NETIF_F_RXCSUM;
5714         }
5715
5716         np->vlanctl_bits = 0;
5717         if (id->driver_data & DEV_HAS_VLAN) {
5718                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5719                 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
5720                                     NETIF_F_HW_VLAN_CTAG_TX;
5721         }
5722
5723         dev->features |= dev->hw_features;
5724
5725         /* Add loopback capability to the device. */
5726         dev->hw_features |= NETIF_F_LOOPBACK;
5727
5728         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5729         if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5730             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5731             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5732                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5733         }
5734
5735         err = -ENOMEM;
5736         np->base = ioremap(addr, np->register_size);
5737         if (!np->base)
5738                 goto out_relreg;
5739
5740         np->rx_ring_size = RX_RING_DEFAULT;
5741         np->tx_ring_size = TX_RING_DEFAULT;
5742
5743         if (!nv_optimized(np)) {
5744                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5745                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5746                                         &np->ring_addr);
5747                 if (!np->rx_ring.orig)
5748                         goto out_unmap;
5749                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5750         } else {
5751                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5752                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5753                                         &np->ring_addr);
5754                 if (!np->rx_ring.ex)
5755                         goto out_unmap;
5756                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5757         }
5758         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5759         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5760         if (!np->rx_skb || !np->tx_skb)
5761                 goto out_freering;
5762
5763         if (!nv_optimized(np))
5764                 dev->netdev_ops = &nv_netdev_ops;
5765         else
5766                 dev->netdev_ops = &nv_netdev_ops_optimized;
5767
5768         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5769         dev->ethtool_ops = &ops;
5770         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5771
5772         pci_set_drvdata(pci_dev, dev);
5773
5774         /* read the mac address */
5775         base = get_hwbase(dev);
5776         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5777         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5778
5779         /* check the workaround bit for correct mac address order */
5780         txreg = readl(base + NvRegTransmitPoll);
5781         if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5782                 /* mac address is already in correct order */
5783                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5784                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5785                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5786                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5787                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5788                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5789         } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5790                 /* mac address is already in correct order */
5791                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5792                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5793                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5794                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5795                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5796                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5797                 /*
5798                  * Set orig mac address back to the reversed version.
5799                  * This flag will be cleared during low power transition.
5800                  * Therefore, we should always put back the reversed address.
5801                  */
5802                 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5803                         (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5804                 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5805         } else {
5806                 /* need to reverse mac address to correct order */
5807                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5808                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5809                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5810                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5811                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5812                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5813                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5814                 dev_dbg(&pci_dev->dev,
5815                         "%s: set workaround bit for reversed mac addr\n",
5816                         __func__);
5817         }
5818
5819         if (!is_valid_ether_addr(dev->dev_addr)) {
5820                 /*
5821                  * Bad mac address. At least one bios sets the mac address
5822                  * to 01:23:45:67:89:ab
5823                  */
5824                 dev_err(&pci_dev->dev,
5825                         "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5826                         dev->dev_addr);
5827                 eth_hw_addr_random(dev);
5828                 dev_err(&pci_dev->dev,
5829                         "Using random MAC address: %pM\n", dev->dev_addr);
5830         }
5831
5832         /* set mac address */
5833         nv_copy_mac_to_hw(dev);
5834
5835         /* disable WOL */
5836         writel(0, base + NvRegWakeUpFlags);
5837         np->wolenabled = 0;
5838         device_set_wakeup_enable(&pci_dev->dev, false);
5839
5840         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5841
5842                 /* take phy and nic out of low power mode */
5843                 powerstate = readl(base + NvRegPowerState2);
5844                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5845                 if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5846                     pci_dev->revision >= 0xA3)
5847                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5848                 writel(powerstate, base + NvRegPowerState2);
5849         }
5850
5851         if (np->desc_ver == DESC_VER_1)
5852                 np->tx_flags = NV_TX_VALID;
5853         else
5854                 np->tx_flags = NV_TX2_VALID;
5855
5856         np->msi_flags = 0;
5857         if ((id->driver_data & DEV_HAS_MSI) && msi)
5858                 np->msi_flags |= NV_MSI_CAPABLE;
5859
5860         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5861                 /* msix has had reported issues when modifying irqmask
5862                    as in the case of napi, therefore, disable for now
5863                 */
5864 #if 0
5865                 np->msi_flags |= NV_MSI_X_CAPABLE;
5866 #endif
5867         }
5868
5869         if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5870                 np->irqmask = NVREG_IRQMASK_CPU;
5871                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5872                         np->msi_flags |= 0x0001;
5873         } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5874                    !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5875                 /* start off in throughput mode */
5876                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5877                 /* remove support for msix mode */
5878                 np->msi_flags &= ~NV_MSI_X_CAPABLE;
5879         } else {
5880                 optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5881                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5882                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5883                         np->msi_flags |= 0x0003;
5884         }
5885
5886         if (id->driver_data & DEV_NEED_TIMERIRQ)
5887                 np->irqmask |= NVREG_IRQ_TIMER;
5888         if (id->driver_data & DEV_NEED_LINKTIMER) {
5889                 np->need_linktimer = 1;
5890                 np->link_timeout = jiffies + LINK_TIMEOUT;
5891         } else {
5892                 np->need_linktimer = 0;
5893         }
5894
5895         /* Limit the number of tx's outstanding for hw bug */
5896         if (id->driver_data & DEV_NEED_TX_LIMIT) {
5897                 np->tx_limit = 1;
5898                 if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5899                     pci_dev->revision >= 0xA2)
5900                         np->tx_limit = 0;
5901         }
5902
5903         /* clear phy state and temporarily halt phy interrupts */
5904         writel(0, base + NvRegMIIMask);
5905         phystate = readl(base + NvRegAdapterControl);
5906         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5907                 phystate_orig = 1;
5908                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5909                 writel(phystate, base + NvRegAdapterControl);
5910         }
5911         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5912
5913         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5914                 /* management unit running on the mac? */
5915                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5916                     (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5917                     nv_mgmt_acquire_sema(dev) &&
5918                     nv_mgmt_get_version(dev)) {
5919                         np->mac_in_use = 1;
5920                         if (np->mgmt_version > 0)
5921                                 np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5922                         /* management unit setup the phy already? */
5923                         if (np->mac_in_use &&
5924                             ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5925                              NVREG_XMITCTL_SYNC_PHY_INIT)) {
5926                                 /* phy is inited by mgmt unit */
5927                                 phyinitialized = 1;
5928                         } else {
5929                                 /* we need to init the phy */
5930                         }
5931                 }
5932         }
5933
5934         /* find a suitable phy */
5935         for (i = 1; i <= 32; i++) {
5936                 int id1, id2;
5937                 int phyaddr = i & 0x1F;
5938
5939                 spin_lock_irq(&np->lock);
5940                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5941                 spin_unlock_irq(&np->lock);
5942                 if (id1 < 0 || id1 == 0xffff)
5943                         continue;
5944                 spin_lock_irq(&np->lock);
5945                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5946                 spin_unlock_irq(&np->lock);
5947                 if (id2 < 0 || id2 == 0xffff)
5948                         continue;
5949
5950                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5951                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5952                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5953                 np->phyaddr = phyaddr;
5954                 np->phy_oui = id1 | id2;
5955
5956                 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5957                 if (np->phy_oui == PHY_OUI_REALTEK2)
5958                         np->phy_oui = PHY_OUI_REALTEK;
5959                 /* Setup phy revision for Realtek */
5960                 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5961                         np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5962
5963                 break;
5964         }
5965         if (i == 33) {
5966                 dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5967                 goto out_error;
5968         }
5969
5970         if (!phyinitialized) {
5971                 /* reset it */
5972                 phy_init(dev);
5973         } else {
5974                 /* see if it is a gigabit phy */
5975                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5976                 if (mii_status & PHY_GIGABIT)
5977                         np->gigabit = PHY_GIGABIT;
5978         }
5979
5980         /* set default link speed settings */
5981         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5982         np->duplex = 0;
5983         np->autoneg = 1;
5984
5985         err = register_netdev(dev);
5986         if (err) {
5987                 dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5988                 goto out_error;
5989         }
5990
5991         netif_carrier_off(dev);
5992
5993         /* Some NICs freeze when TX pause is enabled while NIC is
5994          * down, and this stays across warm reboots. The sequence
5995          * below should be enough to recover from that state.
5996          */
5997         nv_update_pause(dev, 0);
5998         nv_start_tx(dev);
5999         nv_stop_tx(dev);
6000
6001         if (id->driver_data & DEV_HAS_VLAN)
6002                 nv_vlan_mode(dev, dev->features);
6003
6004         dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
6005                  dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
6006
6007         dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
6008                  dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
6009                  dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
6010                         "csum " : "",
6011                  dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
6012                                   NETIF_F_HW_VLAN_CTAG_TX) ?
6013                         "vlan " : "",
6014                  dev->features & (NETIF_F_LOOPBACK) ?
6015                         "loopback " : "",
6016                  id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
6017                  id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
6018                  id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
6019                  np->gigabit == PHY_GIGABIT ? "gbit " : "",
6020                  np->need_linktimer ? "lnktim " : "",
6021                  np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
6022                  np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
6023                  np->desc_ver);
6024
6025         return 0;
6026
6027 out_error:
6028         if (phystate_orig)
6029                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
6030 out_freering:
6031         free_rings(dev);
6032 out_unmap:
6033         iounmap(get_hwbase(dev));
6034 out_relreg:
6035         pci_release_regions(pci_dev);
6036 out_disable:
6037         pci_disable_device(pci_dev);
6038 out_free:
6039         free_netdev(dev);
6040 out:
6041         return err;
6042 }
6043
6044 static void nv_restore_phy(struct net_device *dev)
6045 {
6046         struct fe_priv *np = netdev_priv(dev);
6047         u16 phy_reserved, mii_control;
6048
6049         if (np->phy_oui == PHY_OUI_REALTEK &&
6050             np->phy_model == PHY_MODEL_REALTEK_8201 &&
6051             phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6052                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6053                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6054                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6055                 phy_reserved |= PHY_REALTEK_INIT8;
6056                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6057                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6058
6059                 /* restart auto negotiation */
6060                 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6061                 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6062                 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6063         }
6064 }
6065
6066 static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6067 {
6068         struct net_device *dev = pci_get_drvdata(pci_dev);
6069         struct fe_priv *np = netdev_priv(dev);
6070         u8 __iomem *base = get_hwbase(dev);
6071
6072         /* special op: write back the misordered MAC address - otherwise
6073          * the next nv_probe would see a wrong address.
6074          */
6075         writel(np->orig_mac[0], base + NvRegMacAddrA);
6076         writel(np->orig_mac[1], base + NvRegMacAddrB);
6077         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6078                base + NvRegTransmitPoll);
6079 }
6080
6081 static void nv_remove(struct pci_dev *pci_dev)
6082 {
6083         struct net_device *dev = pci_get_drvdata(pci_dev);
6084
6085         unregister_netdev(dev);
6086
6087         nv_restore_mac_addr(pci_dev);
6088
6089         /* restore any phy related changes */
6090         nv_restore_phy(dev);
6091
6092         nv_mgmt_release_sema(dev);
6093
6094         /* free all structures */
6095         free_rings(dev);
6096         iounmap(get_hwbase(dev));
6097         pci_release_regions(pci_dev);
6098         pci_disable_device(pci_dev);
6099         free_netdev(dev);
6100 }
6101
6102 #ifdef CONFIG_PM_SLEEP
6103 static int nv_suspend(struct device *device)
6104 {
6105         struct pci_dev *pdev = to_pci_dev(device);
6106         struct net_device *dev = pci_get_drvdata(pdev);
6107         struct fe_priv *np = netdev_priv(dev);
6108         u8 __iomem *base = get_hwbase(dev);
6109         int i;
6110
6111         if (netif_running(dev)) {
6112                 /* Gross. */
6113                 nv_close(dev);
6114         }
6115         netif_device_detach(dev);
6116
6117         /* save non-pci configuration space */
6118         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6119                 np->saved_config_space[i] = readl(base + i*sizeof(u32));
6120
6121         return 0;
6122 }
6123
6124 static int nv_resume(struct device *device)
6125 {
6126         struct pci_dev *pdev = to_pci_dev(device);
6127         struct net_device *dev = pci_get_drvdata(pdev);
6128         struct fe_priv *np = netdev_priv(dev);
6129         u8 __iomem *base = get_hwbase(dev);
6130         int i, rc = 0;
6131
6132         /* restore non-pci configuration space */
6133         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6134                 writel(np->saved_config_space[i], base+i*sizeof(u32));
6135
6136         if (np->driver_data & DEV_NEED_MSI_FIX)
6137                 pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6138
6139         /* restore phy state, including autoneg */
6140         phy_init(dev);
6141
6142         netif_device_attach(dev);
6143         if (netif_running(dev)) {
6144                 rc = nv_open(dev);
6145                 nv_set_multicast(dev);
6146         }
6147         return rc;
6148 }
6149
6150 static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6151 #define NV_PM_OPS (&nv_pm_ops)
6152
6153 #else
6154 #define NV_PM_OPS NULL
6155 #endif /* CONFIG_PM_SLEEP */
6156
6157 #ifdef CONFIG_PM
6158 static void nv_shutdown(struct pci_dev *pdev)
6159 {
6160         struct net_device *dev = pci_get_drvdata(pdev);
6161         struct fe_priv *np = netdev_priv(dev);
6162
6163         if (netif_running(dev))
6164                 nv_close(dev);
6165
6166         /*
6167          * Restore the MAC so a kernel started by kexec won't get confused.
6168          * If we really go for poweroff, we must not restore the MAC,
6169          * otherwise the MAC for WOL will be reversed at least on some boards.
6170          */
6171         if (system_state != SYSTEM_POWER_OFF)
6172                 nv_restore_mac_addr(pdev);
6173
6174         pci_disable_device(pdev);
6175         /*
6176          * Apparently it is not possible to reinitialise from D3 hot,
6177          * only put the device into D3 if we really go for poweroff.
6178          */
6179         if (system_state == SYSTEM_POWER_OFF) {
6180                 pci_wake_from_d3(pdev, np->wolenabled);
6181                 pci_set_power_state(pdev, PCI_D3hot);
6182         }
6183 }
6184 #else
6185 #define nv_shutdown NULL
6186 #endif /* CONFIG_PM */
6187
6188 static const struct pci_device_id pci_tbl[] = {
6189         {       /* nForce Ethernet Controller */
6190                 PCI_DEVICE(0x10DE, 0x01C3),
6191                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6192         },
6193         {       /* nForce2 Ethernet Controller */
6194                 PCI_DEVICE(0x10DE, 0x0066),
6195                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6196         },
6197         {       /* nForce3 Ethernet Controller */
6198                 PCI_DEVICE(0x10DE, 0x00D6),
6199                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6200         },
6201         {       /* nForce3 Ethernet Controller */
6202                 PCI_DEVICE(0x10DE, 0x0086),
6203                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6204         },
6205         {       /* nForce3 Ethernet Controller */
6206                 PCI_DEVICE(0x10DE, 0x008C),
6207                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6208         },
6209         {       /* nForce3 Ethernet Controller */
6210                 PCI_DEVICE(0x10DE, 0x00E6),
6211                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6212         },
6213         {       /* nForce3 Ethernet Controller */
6214                 PCI_DEVICE(0x10DE, 0x00DF),
6215                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6216         },
6217         {       /* CK804 Ethernet Controller */
6218                 PCI_DEVICE(0x10DE, 0x0056),
6219                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6220         },
6221         {       /* CK804 Ethernet Controller */
6222                 PCI_DEVICE(0x10DE, 0x0057),
6223                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6224         },
6225         {       /* MCP04 Ethernet Controller */
6226                 PCI_DEVICE(0x10DE, 0x0037),
6227                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6228         },
6229         {       /* MCP04 Ethernet Controller */
6230                 PCI_DEVICE(0x10DE, 0x0038),
6231                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6232         },
6233         {       /* MCP51 Ethernet Controller */
6234                 PCI_DEVICE(0x10DE, 0x0268),
6235                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6236         },
6237         {       /* MCP51 Ethernet Controller */
6238                 PCI_DEVICE(0x10DE, 0x0269),
6239                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6240         },
6241         {       /* MCP55 Ethernet Controller */
6242                 PCI_DEVICE(0x10DE, 0x0372),
6243                 .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,
6244         },
6245         {       /* MCP55 Ethernet Controller */
6246                 PCI_DEVICE(0x10DE, 0x0373),
6247                 .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,
6248         },
6249         {       /* MCP61 Ethernet Controller */
6250                 PCI_DEVICE(0x10DE, 0x03E5),
6251                 .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,
6252         },
6253         {       /* MCP61 Ethernet Controller */
6254                 PCI_DEVICE(0x10DE, 0x03E6),
6255                 .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,
6256         },
6257         {       /* MCP61 Ethernet Controller */
6258                 PCI_DEVICE(0x10DE, 0x03EE),
6259                 .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,
6260         },
6261         {       /* MCP61 Ethernet Controller */
6262                 PCI_DEVICE(0x10DE, 0x03EF),
6263                 .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,
6264         },
6265         {       /* MCP65 Ethernet Controller */
6266                 PCI_DEVICE(0x10DE, 0x0450),
6267                 .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,
6268         },
6269         {       /* MCP65 Ethernet Controller */
6270                 PCI_DEVICE(0x10DE, 0x0451),
6271                 .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,
6272         },
6273         {       /* MCP65 Ethernet Controller */
6274                 PCI_DEVICE(0x10DE, 0x0452),
6275                 .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,
6276         },
6277         {       /* MCP65 Ethernet Controller */
6278                 PCI_DEVICE(0x10DE, 0x0453),
6279                 .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,
6280         },
6281         {       /* MCP67 Ethernet Controller */
6282                 PCI_DEVICE(0x10DE, 0x054C),
6283                 .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,
6284         },
6285         {       /* MCP67 Ethernet Controller */
6286                 PCI_DEVICE(0x10DE, 0x054D),
6287                 .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,
6288         },
6289         {       /* MCP67 Ethernet Controller */
6290                 PCI_DEVICE(0x10DE, 0x054E),
6291                 .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,
6292         },
6293         {       /* MCP67 Ethernet Controller */
6294                 PCI_DEVICE(0x10DE, 0x054F),
6295                 .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,
6296         },
6297         {       /* MCP73 Ethernet Controller */
6298                 PCI_DEVICE(0x10DE, 0x07DC),
6299                 .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,
6300         },
6301         {       /* MCP73 Ethernet Controller */
6302                 PCI_DEVICE(0x10DE, 0x07DD),
6303                 .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,
6304         },
6305         {       /* MCP73 Ethernet Controller */
6306                 PCI_DEVICE(0x10DE, 0x07DE),
6307                 .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,
6308         },
6309         {       /* MCP73 Ethernet Controller */
6310                 PCI_DEVICE(0x10DE, 0x07DF),
6311                 .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,
6312         },
6313         {       /* MCP77 Ethernet Controller */
6314                 PCI_DEVICE(0x10DE, 0x0760),
6315                 .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,
6316         },
6317         {       /* MCP77 Ethernet Controller */
6318                 PCI_DEVICE(0x10DE, 0x0761),
6319                 .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,
6320         },
6321         {       /* MCP77 Ethernet Controller */
6322                 PCI_DEVICE(0x10DE, 0x0762),
6323                 .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,
6324         },
6325         {       /* MCP77 Ethernet Controller */
6326                 PCI_DEVICE(0x10DE, 0x0763),
6327                 .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,
6328         },
6329         {       /* MCP79 Ethernet Controller */
6330                 PCI_DEVICE(0x10DE, 0x0AB0),
6331                 .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,
6332         },
6333         {       /* MCP79 Ethernet Controller */
6334                 PCI_DEVICE(0x10DE, 0x0AB1),
6335                 .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,
6336         },
6337         {       /* MCP79 Ethernet Controller */
6338                 PCI_DEVICE(0x10DE, 0x0AB2),
6339                 .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,
6340         },
6341         {       /* MCP79 Ethernet Controller */
6342                 PCI_DEVICE(0x10DE, 0x0AB3),
6343                 .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,
6344         },
6345         {       /* MCP89 Ethernet Controller */
6346                 PCI_DEVICE(0x10DE, 0x0D7D),
6347                 .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,
6348         },
6349         {0,},
6350 };
6351
6352 static struct pci_driver forcedeth_pci_driver = {
6353         .name           = DRV_NAME,
6354         .id_table       = pci_tbl,
6355         .probe          = nv_probe,
6356         .remove         = nv_remove,
6357         .shutdown       = nv_shutdown,
6358         .driver.pm      = NV_PM_OPS,
6359 };
6360
6361 module_param(max_interrupt_work, int, 0);
6362 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6363 module_param(optimization_mode, int, 0);
6364 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.");
6365 module_param(poll_interval, int, 0);
6366 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.");
6367 module_param(msi, int, 0);
6368 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6369 module_param(msix, int, 0);
6370 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6371 module_param(dma_64bit, int, 0);
6372 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6373 module_param(phy_cross, int, 0);
6374 MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6375 module_param(phy_power_down, int, 0);
6376 MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6377 module_param(debug_tx_timeout, bool, 0);
6378 MODULE_PARM_DESC(debug_tx_timeout,
6379                  "Dump tx related registers and ring when tx_timeout happens");
6380
6381 module_pci_driver(forcedeth_pci_driver);
6382 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6383 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6384 MODULE_LICENSE("GPL");
6385 MODULE_DEVICE_TABLE(pci, pci_tbl);