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, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  31  *
  32  * Known bugs:
  33  * We suspect that on some hardware no TX done interrupts are generated.
  34  * This means recovery from netif_stop_queue only happens if the hw timer
  35  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
  36  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
  37  * If your hardware reliably generates tx done interrupts, then you can remove
  38  * DEV_NEED_TIMERIRQ from the driver_data flags.
  39  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  40  * superfluous timer interrupts from the nic.
  41  */
  42
  43 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  44
  45 #define FORCEDETH_VERSION               "0.64"
  46 #define DRV_NAME                        "forcedeth"
  47
  48 #include <linux/module.h>
  49 #include <linux/types.h>
  50 #include <linux/pci.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/netdevice.h>
  53 #include <linux/etherdevice.h>
  54 #include <linux/delay.h>
  55 #include <linux/sched.h>
  56 #include <linux/spinlock.h>
  57 #include <linux/ethtool.h>
  58 #include <linux/timer.h>
  59 #include <linux/skbuff.h>
  60 #include <linux/mii.h>
  61 #include <linux/random.h>
  62 #include <linux/init.h>
  63 #include <linux/if_vlan.h>
  64 #include <linux/dma-mapping.h>
  65 #include <linux/slab.h>
  66 #include <linux/uaccess.h>
  67 #include <linux/prefetch.h>
  68 #include <linux/u64_stats_sync.h>
  69 #include <linux/io.h>
  70
  71 #include <asm/irq.h>
  72
  73 #define TX_WORK_PER_LOOP  64
  74 #define RX_WORK_PER_LOOP  64
  75
  76 /*
  77  * Hardware access:
  78  */
  79
  80 #define DEV_NEED_TIMERIRQ          0x0000001  /* set the timer irq flag in the irq mask */
  81 #define DEV_NEED_LINKTIMER         0x0000002  /* poll link settings. Relies on the timer irq */
  82 #define DEV_HAS_LARGEDESC          0x0000004  /* device supports jumbo frames and needs packet format 2 */
  83 #define DEV_HAS_HIGH_DMA           0x0000008  /* device supports 64bit dma */
  84 #define DEV_HAS_CHECKSUM           0x0000010  /* device supports tx and rx checksum offloads */
  85 #define DEV_HAS_VLAN               0x0000020  /* device supports vlan tagging and striping */
  86 #define DEV_HAS_MSI                0x0000040  /* device supports MSI */
  87 #define DEV_HAS_MSI_X              0x0000080  /* device supports MSI-X */
  88 #define DEV_HAS_POWER_CNTRL        0x0000100  /* device supports power savings */
  89 #define DEV_HAS_STATISTICS_V1      0x0000200  /* device supports hw statistics version 1 */
  90 #define DEV_HAS_STATISTICS_V2      0x0000400  /* device supports hw statistics version 2 */
  91 #define DEV_HAS_STATISTICS_V3      0x0000800  /* device supports hw statistics version 3 */
  92 #define DEV_HAS_STATISTICS_V12     0x0000600  /* device supports hw statistics version 1 and 2 */
  93 #define DEV_HAS_STATISTICS_V123    0x0000e00  /* device supports hw statistics version 1, 2, and 3 */
  94 #define DEV_HAS_TEST_EXTENDED      0x0001000  /* device supports extended diagnostic test */
  95 #define DEV_HAS_MGMT_UNIT          0x0002000  /* device supports management unit */
  96 #define DEV_HAS_CORRECT_MACADDR    0x0004000  /* device supports correct mac address order */
  97 #define DEV_HAS_COLLISION_FIX      0x0008000  /* device supports tx collision fix */
  98 #define DEV_HAS_PAUSEFRAME_TX_V1   0x0010000  /* device supports tx pause frames version 1 */
  99 #define DEV_HAS_PAUSEFRAME_TX_V2   0x0020000  /* device supports tx pause frames version 2 */
 100 #define DEV_HAS_PAUSEFRAME_TX_V3   0x0040000  /* device supports tx pause frames version 3 */
 101 #define DEV_NEED_TX_LIMIT          0x0080000  /* device needs to limit tx */
 102 #define DEV_NEED_TX_LIMIT2         0x0180000  /* device needs to limit tx, expect for some revs */
 103 #define DEV_HAS_GEAR_MODE          0x0200000  /* device supports gear mode */
 104 #define DEV_NEED_PHY_INIT_FIX      0x0400000  /* device needs specific phy workaround */
 105 #define DEV_NEED_LOW_POWER_FIX     0x0800000  /* device needs special power up workaround */
 106 #define DEV_NEED_MSI_FIX           0x1000000  /* device needs msi workaround */
 107
 108 enum {
 109         NvRegIrqStatus = 0x000,
 110 #define NVREG_IRQSTAT_MIIEVENT  0x040
 111 #define NVREG_IRQSTAT_MASK              0x83ff
 112         NvRegIrqMask = 0x004,
 113 #define NVREG_IRQ_RX_ERROR              0x0001
 114 #define NVREG_IRQ_RX                    0x0002
 115 #define NVREG_IRQ_RX_NOBUF              0x0004
 116 #define NVREG_IRQ_TX_ERR                0x0008
 117 #define NVREG_IRQ_TX_OK                 0x0010
 118 #define NVREG_IRQ_TIMER                 0x0020
 119 #define NVREG_IRQ_LINK                  0x0040
 120 #define NVREG_IRQ_RX_FORCED             0x0080
 121 #define NVREG_IRQ_TX_FORCED             0x0100
 122 #define NVREG_IRQ_RECOVER_ERROR         0x8200
 123 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 124 #define NVREG_IRQMASK_CPU               0x0060
 125 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 126 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 127 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 128
 129         NvRegUnknownSetupReg6 = 0x008,
 130 #define NVREG_UNKSETUP6_VAL             3
 131
 132 /*
 133  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 134  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 135  */
 136         NvRegPollingInterval = 0x00c,
 137 #define NVREG_POLL_DEFAULT_THROUGHPUT   65535 /* backup tx cleanup if loop max reached */
 138 #define NVREG_POLL_DEFAULT_CPU  13
 139         NvRegMSIMap0 = 0x020,
 140         NvRegMSIMap1 = 0x024,
 141         NvRegMSIIrqMask = 0x030,
 142 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 143         NvRegMisc1 = 0x080,
 144 #define NVREG_MISC1_PAUSE_TX    0x01
 145 #define NVREG_MISC1_HD          0x02
 146 #define NVREG_MISC1_FORCE       0x3b0f3c
 147
 148         NvRegMacReset = 0x34,
 149 #define NVREG_MAC_RESET_ASSERT  0x0F3
 150         NvRegTransmitterControl = 0x084,
 151 #define NVREG_XMITCTL_START     0x01
 152 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 153 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 154 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 155 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 156 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 157 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 158 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 159 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 160 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 161 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
 162 #define NVREG_XMITCTL_DATA_START        0x00100000
 163 #define NVREG_XMITCTL_DATA_READY        0x00010000
 164 #define NVREG_XMITCTL_DATA_ERROR        0x00020000
 165         NvRegTransmitterStatus = 0x088,
 166 #define NVREG_XMITSTAT_BUSY     0x01
 167
 168         NvRegPacketFilterFlags = 0x8c,
 169 #define NVREG_PFF_PAUSE_RX      0x08
 170 #define NVREG_PFF_ALWAYS        0x7F0000
 171 #define NVREG_PFF_PROMISC       0x80
 172 #define NVREG_PFF_MYADDR        0x20
 173 #define NVREG_PFF_LOOPBACK      0x10
 174
 175         NvRegOffloadConfig = 0x90,
 176 #define NVREG_OFFLOAD_HOMEPHY   0x601
 177 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 178         NvRegReceiverControl = 0x094,
 179 #define NVREG_RCVCTL_START      0x01
 180 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
 181         NvRegReceiverStatus = 0x98,
 182 #define NVREG_RCVSTAT_BUSY      0x01
 183
 184         NvRegSlotTime = 0x9c,
 185 #define NVREG_SLOTTIME_LEGBF_ENABLED    0x80000000
 186 #define NVREG_SLOTTIME_10_100_FULL      0x00007f00
 187 #define NVREG_SLOTTIME_1000_FULL        0x0003ff00
 188 #define NVREG_SLOTTIME_HALF             0x0000ff00
 189 #define NVREG_SLOTTIME_DEFAULT          0x00007f00
 190 #define NVREG_SLOTTIME_MASK             0x000000ff
 191
 192         NvRegTxDeferral = 0xA0,
 193 #define NVREG_TX_DEFERRAL_DEFAULT               0x15050f
 194 #define NVREG_TX_DEFERRAL_RGMII_10_100          0x16070f
 195 #define NVREG_TX_DEFERRAL_RGMII_1000            0x14050f
 196 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_10      0x16190f
 197 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_100     0x16300f
 198 #define NVREG_TX_DEFERRAL_MII_STRETCH           0x152000
 199         NvRegRxDeferral = 0xA4,
 200 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 201         NvRegMacAddrA = 0xA8,
 202         NvRegMacAddrB = 0xAC,
 203         NvRegMulticastAddrA = 0xB0,
 204 #define NVREG_MCASTADDRA_FORCE  0x01
 205         NvRegMulticastAddrB = 0xB4,
 206         NvRegMulticastMaskA = 0xB8,
 207 #define NVREG_MCASTMASKA_NONE           0xffffffff
 208         NvRegMulticastMaskB = 0xBC,
 209 #define NVREG_MCASTMASKB_NONE           0xffff
 210
 211         NvRegPhyInterface = 0xC0,
 212 #define PHY_RGMII               0x10000000
 213         NvRegBackOffControl = 0xC4,
 214 #define NVREG_BKOFFCTRL_DEFAULT                 0x70000000
 215 #define NVREG_BKOFFCTRL_SEED_MASK               0x000003ff
 216 #define NVREG_BKOFFCTRL_SELECT                  24
 217 #define NVREG_BKOFFCTRL_GEAR                    12
 218
 219         NvRegTxRingPhysAddr = 0x100,
 220         NvRegRxRingPhysAddr = 0x104,
 221         NvRegRingSizes = 0x108,
 222 #define NVREG_RINGSZ_TXSHIFT 0
 223 #define NVREG_RINGSZ_RXSHIFT 16
 224         NvRegTransmitPoll = 0x10c,
 225 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 226         NvRegLinkSpeed = 0x110,
 227 #define NVREG_LINKSPEED_FORCE 0x10000
 228 #define NVREG_LINKSPEED_10      1000
 229 #define NVREG_LINKSPEED_100     100
 230 #define NVREG_LINKSPEED_1000    50
 231 #define NVREG_LINKSPEED_MASK    (0xFFF)
 232         NvRegUnknownSetupReg5 = 0x130,
 233 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 234         NvRegTxWatermark = 0x13c,
 235 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 236 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 237 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 238         NvRegTxRxControl = 0x144,
 239 #define NVREG_TXRXCTL_KICK      0x0001
 240 #define NVREG_TXRXCTL_BIT1      0x0002
 241 #define NVREG_TXRXCTL_BIT2      0x0004
 242 #define NVREG_TXRXCTL_IDLE      0x0008
 243 #define NVREG_TXRXCTL_RESET     0x0010
 244 #define NVREG_TXRXCTL_RXCHECK   0x0400
 245 #define NVREG_TXRXCTL_DESC_1    0
 246 #define NVREG_TXRXCTL_DESC_2    0x002100
 247 #define NVREG_TXRXCTL_DESC_3    0xc02200
 248 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 249 #define NVREG_TXRXCTL_VLANINS   0x00080
 250         NvRegTxRingPhysAddrHigh = 0x148,
 251         NvRegRxRingPhysAddrHigh = 0x14C,
 252         NvRegTxPauseFrame = 0x170,
 253 #define NVREG_TX_PAUSEFRAME_DISABLE     0x0fff0080
 254 #define NVREG_TX_PAUSEFRAME_ENABLE_V1   0x01800010
 255 #define NVREG_TX_PAUSEFRAME_ENABLE_V2   0x056003f0
 256 #define NVREG_TX_PAUSEFRAME_ENABLE_V3   0x09f00880
 257         NvRegTxPauseFrameLimit = 0x174,
 258 #define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
 259         NvRegMIIStatus = 0x180,
 260 #define NVREG_MIISTAT_ERROR             0x0001
 261 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 262 #define NVREG_MIISTAT_MASK_RW           0x0007
 263 #define NVREG_MIISTAT_MASK_ALL          0x000f
 264         NvRegMIIMask = 0x184,
 265 #define NVREG_MII_LINKCHANGE            0x0008
 266
 267         NvRegAdapterControl = 0x188,
 268 #define NVREG_ADAPTCTL_START    0x02
 269 #define NVREG_ADAPTCTL_LINKUP   0x04
 270 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 271 #define NVREG_ADAPTCTL_RUNNING  0x100000
 272 #define NVREG_ADAPTCTL_PHYSHIFT 24
 273         NvRegMIISpeed = 0x18c,
 274 #define NVREG_MIISPEED_BIT8     (1<<8)
 275 #define NVREG_MIIDELAY  5
 276         NvRegMIIControl = 0x190,
 277 #define NVREG_MIICTL_INUSE      0x08000
 278 #define NVREG_MIICTL_WRITE      0x00400
 279 #define NVREG_MIICTL_ADDRSHIFT  5
 280         NvRegMIIData = 0x194,
 281         NvRegTxUnicast = 0x1a0,
 282         NvRegTxMulticast = 0x1a4,
 283         NvRegTxBroadcast = 0x1a8,
 284         NvRegWakeUpFlags = 0x200,
 285 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 286 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 287 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 288 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 289 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 290 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 291 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 292 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 293 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 294 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 295 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 296
 297         NvRegMgmtUnitGetVersion = 0x204,
 298 #define NVREG_MGMTUNITGETVERSION        0x01
 299         NvRegMgmtUnitVersion = 0x208,
 300 #define NVREG_MGMTUNITVERSION           0x08
 301         NvRegPowerCap = 0x268,
 302 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 303 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 304 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 305         NvRegPowerState = 0x26c,
 306 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 307 #define NVREG_POWERSTATE_VALID          0x0100
 308 #define NVREG_POWERSTATE_MASK           0x0003
 309 #define NVREG_POWERSTATE_D0             0x0000
 310 #define NVREG_POWERSTATE_D1             0x0001
 311 #define NVREG_POWERSTATE_D2             0x0002
 312 #define NVREG_POWERSTATE_D3             0x0003
 313         NvRegMgmtUnitControl = 0x278,
 314 #define NVREG_MGMTUNITCONTROL_INUSE     0x20000
 315         NvRegTxCnt = 0x280,
 316         NvRegTxZeroReXmt = 0x284,
 317         NvRegTxOneReXmt = 0x288,
 318         NvRegTxManyReXmt = 0x28c,
 319         NvRegTxLateCol = 0x290,
 320         NvRegTxUnderflow = 0x294,
 321         NvRegTxLossCarrier = 0x298,
 322         NvRegTxExcessDef = 0x29c,
 323         NvRegTxRetryErr = 0x2a0,
 324         NvRegRxFrameErr = 0x2a4,
 325         NvRegRxExtraByte = 0x2a8,
 326         NvRegRxLateCol = 0x2ac,
 327         NvRegRxRunt = 0x2b0,
 328         NvRegRxFrameTooLong = 0x2b4,
 329         NvRegRxOverflow = 0x2b8,
 330         NvRegRxFCSErr = 0x2bc,
 331         NvRegRxFrameAlignErr = 0x2c0,
 332         NvRegRxLenErr = 0x2c4,
 333         NvRegRxUnicast = 0x2c8,
 334         NvRegRxMulticast = 0x2cc,
 335         NvRegRxBroadcast = 0x2d0,
 336         NvRegTxDef = 0x2d4,
 337         NvRegTxFrame = 0x2d8,
 338         NvRegRxCnt = 0x2dc,
 339         NvRegTxPause = 0x2e0,
 340         NvRegRxPause = 0x2e4,
 341         NvRegRxDropFrame = 0x2e8,
 342         NvRegVlanControl = 0x300,
 343 #define NVREG_VLANCONTROL_ENABLE        0x2000
 344         NvRegMSIXMap0 = 0x3e0,
 345         NvRegMSIXMap1 = 0x3e4,
 346         NvRegMSIXIrqStatus = 0x3f0,
 347
 348         NvRegPowerState2 = 0x600,
 349 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F15
 350 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 351 #define NVREG_POWERSTATE2_PHY_RESET             0x0004
 352 #define NVREG_POWERSTATE2_GATE_CLOCKS           0x0F00
 353 };
 354
 355 /* Big endian: should work, but is untested */
 356 struct ring_desc {
 357         __le32 buf;
 358         __le32 flaglen;
 359 };
 360
 361 struct ring_desc_ex {
 362         __le32 bufhigh;
 363         __le32 buflow;
 364         __le32 txvlan;
 365         __le32 flaglen;
 366 };
 367
 368 union ring_type {
 369         struct ring_desc *orig;
 370         struct ring_desc_ex *ex;
 371 };
 372
 373 #define FLAG_MASK_V1 0xffff0000
 374 #define FLAG_MASK_V2 0xffffc000
 375 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 376 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 377
 378 #define NV_TX_LASTPACKET        (1<<16)
 379 #define NV_TX_RETRYERROR        (1<<19)
 380 #define NV_TX_RETRYCOUNT_MASK   (0xF<<20)
 381 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 382 #define NV_TX_DEFERRED          (1<<26)
 383 #define NV_TX_CARRIERLOST       (1<<27)
 384 #define NV_TX_LATECOLLISION     (1<<28)
 385 #define NV_TX_UNDERFLOW         (1<<29)
 386 #define NV_TX_ERROR             (1<<30)
 387 #define NV_TX_VALID             (1<<31)
 388
 389 #define NV_TX2_LASTPACKET       (1<<29)
 390 #define NV_TX2_RETRYERROR       (1<<18)
 391 #define NV_TX2_RETRYCOUNT_MASK  (0xF<<19)
 392 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 393 #define NV_TX2_DEFERRED         (1<<25)
 394 #define NV_TX2_CARRIERLOST      (1<<26)
 395 #define NV_TX2_LATECOLLISION    (1<<27)
 396 #define NV_TX2_UNDERFLOW        (1<<28)
 397 /* error and valid are the same for both */
 398 #define NV_TX2_ERROR            (1<<30)
 399 #define NV_TX2_VALID            (1<<31)
 400 #define NV_TX2_TSO              (1<<28)
 401 #define NV_TX2_TSO_SHIFT        14
 402 #define NV_TX2_TSO_MAX_SHIFT    14
 403 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 404 #define NV_TX2_CHECKSUM_L3      (1<<27)
 405 #define NV_TX2_CHECKSUM_L4      (1<<26)
 406
 407 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 408
 409 #define NV_RX_DESCRIPTORVALID   (1<<16)
 410 #define NV_RX_MISSEDFRAME       (1<<17)
 411 #define NV_RX_SUBSTRACT1        (1<<18)
 412 #define NV_RX_ERROR1            (1<<23)
 413 #define NV_RX_ERROR2            (1<<24)
 414 #define NV_RX_ERROR3            (1<<25)
 415 #define NV_RX_ERROR4            (1<<26)
 416 #define NV_RX_CRCERR            (1<<27)
 417 #define NV_RX_OVERFLOW          (1<<28)
 418 #define NV_RX_FRAMINGERR        (1<<29)
 419 #define NV_RX_ERROR             (1<<30)
 420 #define NV_RX_AVAIL             (1<<31)
 421 #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)
 422
 423 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 424 #define NV_RX2_CHECKSUM_IP      (0x10000000)
 425 #define NV_RX2_CHECKSUM_IP_TCP  (0x14000000)
 426 #define NV_RX2_CHECKSUM_IP_UDP  (0x18000000)
 427 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 428 #define NV_RX2_SUBSTRACT1       (1<<25)
 429 #define NV_RX2_ERROR1           (1<<18)
 430 #define NV_RX2_ERROR2           (1<<19)
 431 #define NV_RX2_ERROR3           (1<<20)
 432 #define NV_RX2_ERROR4           (1<<21)
 433 #define NV_RX2_CRCERR           (1<<22)
 434 #define NV_RX2_OVERFLOW         (1<<23)
 435 #define NV_RX2_FRAMINGERR       (1<<24)
 436 /* error and avail are the same for both */
 437 #define NV_RX2_ERROR            (1<<30)
 438 #define NV_RX2_AVAIL            (1<<31)
 439 #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)
 440
 441 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 442 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 443
 444 /* Miscellaneous hardware related defines: */
 445 #define NV_PCI_REGSZ_VER1       0x270
 446 #define NV_PCI_REGSZ_VER2       0x2d4
 447 #define NV_PCI_REGSZ_VER3       0x604
 448 #define NV_PCI_REGSZ_MAX        0x604
 449
 450 /* various timeout delays: all in usec */
 451 #define NV_TXRX_RESET_DELAY     4
 452 #define NV_TXSTOP_DELAY1        10
 453 #define NV_TXSTOP_DELAY1MAX     500000
 454 #define NV_TXSTOP_DELAY2        100
 455 #define NV_RXSTOP_DELAY1        10
 456 #define NV_RXSTOP_DELAY1MAX     500000
 457 #define NV_RXSTOP_DELAY2        100
 458 #define NV_SETUP5_DELAY         5
 459 #define NV_SETUP5_DELAYMAX      50000
 460 #define NV_POWERUP_DELAY        5
 461 #define NV_POWERUP_DELAYMAX     5000
 462 #define NV_MIIBUSY_DELAY        50
 463 #define NV_MIIPHY_DELAY 10
 464 #define NV_MIIPHY_DELAYMAX      10000
 465 #define NV_MAC_RESET_DELAY      64
 466
 467 #define NV_WAKEUPPATTERNS       5
 468 #define NV_WAKEUPMASKENTRIES    4
 469
 470 /* General driver defaults */
 471 #define NV_WATCHDOG_TIMEO       (5*HZ)
 472
 473 #define RX_RING_DEFAULT         512
 474 #define TX_RING_DEFAULT         256
 475 #define RX_RING_MIN             128
 476 #define TX_RING_MIN             64
 477 #define RING_MAX_DESC_VER_1     1024
 478 #define RING_MAX_DESC_VER_2_3   16384
 479
 480 /* rx/tx mac addr + type + vlan + align + slack*/
 481 #define NV_RX_HEADERS           (64)
 482 /* even more slack. */
 483 #define NV_RX_ALLOC_PAD         (64)
 484
 485 /* maximum mtu size */
 486 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 487 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 488
 489 #define OOM_REFILL      (1+HZ/20)
 490 #define POLL_WAIT       (1+HZ/100)
 491 #define LINK_TIMEOUT    (3*HZ)
 492 #define STATS_INTERVAL  (10*HZ)
 493
 494 /*
 495  * desc_ver values:
 496  * The nic supports three different descriptor types:
 497  * - DESC_VER_1: Original
 498  * - DESC_VER_2: support for jumbo frames.
 499  * - DESC_VER_3: 64-bit format.
 500  */
 501 #define DESC_VER_1      1
 502 #define DESC_VER_2      2
 503 #define DESC_VER_3      3
 504
 505 /* PHY defines */
 506 #define PHY_OUI_MARVELL         0x5043
 507 #define PHY_OUI_CICADA          0x03f1
 508 #define PHY_OUI_VITESSE         0x01c1
 509 #define PHY_OUI_REALTEK         0x0732
 510 #define PHY_OUI_REALTEK2        0x0020
 511 #define PHYID1_OUI_MASK 0x03ff
 512 #define PHYID1_OUI_SHFT 6
 513 #define PHYID2_OUI_MASK 0xfc00
 514 #define PHYID2_OUI_SHFT 10
 515 #define PHYID2_MODEL_MASK               0x03f0
 516 #define PHY_MODEL_REALTEK_8211          0x0110
 517 #define PHY_REV_MASK                    0x0001
 518 #define PHY_REV_REALTEK_8211B           0x0000
 519 #define PHY_REV_REALTEK_8211C           0x0001
 520 #define PHY_MODEL_REALTEK_8201          0x0200
 521 #define PHY_MODEL_MARVELL_E3016         0x0220
 522 #define PHY_MARVELL_E3016_INITMASK      0x0300
 523 #define PHY_CICADA_INIT1        0x0f000
 524 #define PHY_CICADA_INIT2        0x0e00
 525 #define PHY_CICADA_INIT3        0x01000
 526 #define PHY_CICADA_INIT4        0x0200
 527 #define PHY_CICADA_INIT5        0x0004
 528 #define PHY_CICADA_INIT6        0x02000
 529 #define PHY_VITESSE_INIT_REG1   0x1f
 530 #define PHY_VITESSE_INIT_REG2   0x10
 531 #define PHY_VITESSE_INIT_REG3   0x11
 532 #define PHY_VITESSE_INIT_REG4   0x12
 533 #define PHY_VITESSE_INIT_MSK1   0xc
 534 #define PHY_VITESSE_INIT_MSK2   0x0180
 535 #define PHY_VITESSE_INIT1       0x52b5
 536 #define PHY_VITESSE_INIT2       0xaf8a
 537 #define PHY_VITESSE_INIT3       0x8
 538 #define PHY_VITESSE_INIT4       0x8f8a
 539 #define PHY_VITESSE_INIT5       0xaf86
 540 #define PHY_VITESSE_INIT6       0x8f86
 541 #define PHY_VITESSE_INIT7       0xaf82
 542 #define PHY_VITESSE_INIT8       0x0100
 543 #define PHY_VITESSE_INIT9       0x8f82
 544 #define PHY_VITESSE_INIT10      0x0
 545 #define PHY_REALTEK_INIT_REG1   0x1f
 546 #define PHY_REALTEK_INIT_REG2   0x19
 547 #define PHY_REALTEK_INIT_REG3   0x13
 548 #define PHY_REALTEK_INIT_REG4   0x14
 549 #define PHY_REALTEK_INIT_REG5   0x18
 550 #define PHY_REALTEK_INIT_REG6   0x11
 551 #define PHY_REALTEK_INIT_REG7   0x01
 552 #define PHY_REALTEK_INIT1       0x0000
 553 #define PHY_REALTEK_INIT2       0x8e00
 554 #define PHY_REALTEK_INIT3       0x0001
 555 #define PHY_REALTEK_INIT4       0xad17
 556 #define PHY_REALTEK_INIT5       0xfb54
 557 #define PHY_REALTEK_INIT6       0xf5c7
 558 #define PHY_REALTEK_INIT7       0x1000
 559 #define PHY_REALTEK_INIT8       0x0003
 560 #define PHY_REALTEK_INIT9       0x0008
 561 #define PHY_REALTEK_INIT10      0x0005
 562 #define PHY_REALTEK_INIT11      0x0200
 563 #define PHY_REALTEK_INIT_MSK1   0x0003
 564
 565 #define PHY_GIGABIT     0x0100
 566
 567 #define PHY_TIMEOUT     0x1
 568 #define PHY_ERROR       0x2
 569
 570 #define PHY_100 0x1
 571 #define PHY_1000        0x2
 572 #define PHY_HALF        0x100
 573
 574 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 575 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 576 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 577 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 578 #define NV_PAUSEFRAME_RX_REQ     0x0010
 579 #define NV_PAUSEFRAME_TX_REQ     0x0020
 580 #define NV_PAUSEFRAME_AUTONEG    0x0040
 581
 582 /* MSI/MSI-X defines */
 583 #define NV_MSI_X_MAX_VECTORS  8
 584 #define NV_MSI_X_VECTORS_MASK 0x000f
 585 #define NV_MSI_CAPABLE        0x0010
 586 #define NV_MSI_X_CAPABLE      0x0020
 587 #define NV_MSI_ENABLED        0x0040
 588 #define NV_MSI_X_ENABLED      0x0080
 589
 590 #define NV_MSI_X_VECTOR_ALL   0x0
 591 #define NV_MSI_X_VECTOR_RX    0x0
 592 #define NV_MSI_X_VECTOR_TX    0x1
 593 #define NV_MSI_X_VECTOR_OTHER 0x2
 594
 595 #define NV_MSI_PRIV_OFFSET 0x68
 596 #define NV_MSI_PRIV_VALUE  0xffffffff
 597
 598 #define NV_RESTART_TX         0x1
 599 #define NV_RESTART_RX         0x2
 600
 601 #define NV_TX_LIMIT_COUNT     16
 602
 603 #define NV_DYNAMIC_THRESHOLD        4
 604 #define NV_DYNAMIC_MAX_QUIET_COUNT  2048
 605
 606 /* statistics */
 607 struct nv_ethtool_str {
 608         char name[ETH_GSTRING_LEN];
 609 };
 610
 611 static const struct nv_ethtool_str nv_estats_str[] = {
 612         { "tx_bytes" }, /* includes Ethernet FCS CRC */
 613         { "tx_zero_rexmt" },
 614         { "tx_one_rexmt" },
 615         { "tx_many_rexmt" },
 616         { "tx_late_collision" },
 617         { "tx_fifo_errors" },
 618         { "tx_carrier_errors" },
 619         { "tx_excess_deferral" },
 620         { "tx_retry_error" },
 621         { "rx_frame_error" },
 622         { "rx_extra_byte" },
 623         { "rx_late_collision" },
 624         { "rx_runt" },
 625         { "rx_frame_too_long" },
 626         { "rx_over_errors" },
 627         { "rx_crc_errors" },
 628         { "rx_frame_align_error" },
 629         { "rx_length_error" },
 630         { "rx_unicast" },
 631         { "rx_multicast" },
 632         { "rx_broadcast" },
 633         { "rx_packets" },
 634         { "rx_errors_total" },
 635         { "tx_errors_total" },
 636
 637         /* version 2 stats */
 638         { "tx_deferral" },
 639         { "tx_packets" },
 640         { "rx_bytes" }, /* includes Ethernet FCS CRC */
 641         { "tx_pause" },
 642         { "rx_pause" },
 643         { "rx_drop_frame" },
 644
 645         /* version 3 stats */
 646         { "tx_unicast" },
 647         { "tx_multicast" },
 648         { "tx_broadcast" }
 649 };
 650
 651 struct nv_ethtool_stats {
 652         u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
 653         u64 tx_zero_rexmt;
 654         u64 tx_one_rexmt;
 655         u64 tx_many_rexmt;
 656         u64 tx_late_collision;
 657         u64 tx_fifo_errors;
 658         u64 tx_carrier_errors;
 659         u64 tx_excess_deferral;
 660         u64 tx_retry_error;
 661         u64 rx_frame_error;
 662         u64 rx_extra_byte;
 663         u64 rx_late_collision;
 664         u64 rx_runt;
 665         u64 rx_frame_too_long;
 666         u64 rx_over_errors;
 667         u64 rx_crc_errors;
 668         u64 rx_frame_align_error;
 669         u64 rx_length_error;
 670         u64 rx_unicast;
 671         u64 rx_multicast;
 672         u64 rx_broadcast;
 673         u64 rx_packets; /* should be ifconfig->rx_packets */
 674         u64 rx_errors_total;
 675         u64 tx_errors_total;
 676
 677         /* version 2 stats */
 678         u64 tx_deferral;
 679         u64 tx_packets; /* should be ifconfig->tx_packets */
 680         u64 rx_bytes;   /* should be ifconfig->rx_bytes + 4*rx_packets */
 681         u64 tx_pause;
 682         u64 rx_pause;
 683         u64 rx_drop_frame;
 684
 685         /* version 3 stats */
 686         u64 tx_unicast;
 687         u64 tx_multicast;
 688         u64 tx_broadcast;
 689 };
 690
 691 #define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
 692 #define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
 693 #define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
 694
 695 /* diagnostics */
 696 #define NV_TEST_COUNT_BASE 3
 697 #define NV_TEST_COUNT_EXTENDED 4
 698
 699 static const struct nv_ethtool_str nv_etests_str[] = {
 700         { "link      (online/offline)" },
 701         { "register  (offline)       " },
 702         { "interrupt (offline)       " },
 703         { "loopback  (offline)       " }
 704 };
 705
 706 struct register_test {
 707         __u32 reg;
 708         __u32 mask;
 709 };
 710
 711 static const struct register_test nv_registers_test[] = {
 712         { NvRegUnknownSetupReg6, 0x01 },
 713         { NvRegMisc1, 0x03c },
 714         { NvRegOffloadConfig, 0x03ff },
 715         { NvRegMulticastAddrA, 0xffffffff },
 716         { NvRegTxWatermark, 0x0ff },
 717         { NvRegWakeUpFlags, 0x07777 },
 718         { 0, 0 }
 719 };
 720
 721 struct nv_skb_map {
 722         struct sk_buff *skb;
 723         dma_addr_t dma;
 724         unsigned int dma_len:31;
 725         unsigned int dma_single:1;
 726         struct ring_desc_ex *first_tx_desc;
 727         struct nv_skb_map *next_tx_ctx;
 728 };
 729
 730 /*
 731  * SMP locking:
 732  * All hardware access under netdev_priv(dev)->lock, except the performance
 733  * critical parts:
 734  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 735  *      by the arch code for interrupts.
 736  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 737  *      needs netdev_priv(dev)->lock :-(
 738  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 739  *
 740  * Hardware stats updates are protected by hwstats_lock:
 741  * - updated by nv_do_stats_poll (timer). This is meant to avoid
 742  *   integer wraparound in the NIC stats registers, at low frequency
 743  *   (0.1 Hz)
 744  * - updated by nv_get_ethtool_stats + nv_get_stats64
 745  *
 746  * Software stats are accessed only through 64b synchronization points
 747  * and are not subject to other synchronization techniques (single
 748  * update thread on the TX or RX paths).
 749  */
 750
 751 /* in dev: base, irq */
 752 struct fe_priv {
 753         spinlock_t lock;
 754
 755         struct net_device *dev;
 756         struct napi_struct napi;
 757
 758         /* hardware stats are updated in syscall and timer */
 759         spinlock_t hwstats_lock;
 760         struct nv_ethtool_stats estats;
 761
 762         int in_shutdown;
 763         u32 linkspeed;
 764         int duplex;
 765         int autoneg;
 766         int fixed_mode;
 767         int phyaddr;
 768         int wolenabled;
 769         unsigned int phy_oui;
 770         unsigned int phy_model;
 771         unsigned int phy_rev;
 772         u16 gigabit;
 773         int intr_test;
 774         int recover_error;
 775         int quiet_count;
 776
 777         /* General data: RO fields */
 778         dma_addr_t ring_addr;
 779         struct pci_dev *pci_dev;
 780         u32 orig_mac[2];
 781         u32 events;
 782         u32 irqmask;
 783         u32 desc_ver;
 784         u32 txrxctl_bits;
 785         u32 vlanctl_bits;
 786         u32 driver_data;
 787         u32 device_id;
 788         u32 register_size;
 789         u32 mac_in_use;
 790         int mgmt_version;
 791         int mgmt_sema;
 792
 793         void __iomem *base;
 794
 795         /* rx specific fields.
 796          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 797          */
 798         union ring_type get_rx, put_rx, first_rx, last_rx;
 799         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 800         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 801         struct nv_skb_map *rx_skb;
 802
 803         union ring_type rx_ring;
 804         unsigned int rx_buf_sz;
 805         unsigned int pkt_limit;
 806         struct timer_list oom_kick;
 807         struct timer_list nic_poll;
 808         struct timer_list stats_poll;
 809         u32 nic_poll_irq;
 810         int rx_ring_size;
 811
 812         /* RX software stats */
 813         struct u64_stats_sync swstats_rx_syncp;
 814         u64 stat_rx_packets;
 815         u64 stat_rx_bytes; /* not always available in HW */
 816         u64 stat_rx_missed_errors;
 817         u64 stat_rx_dropped;
 818
 819         /* media detection workaround.
 820          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 821          */
 822         int need_linktimer;
 823         unsigned long link_timeout;
 824         /*
 825          * tx specific fields.
 826          */
 827         union ring_type get_tx, put_tx, first_tx, last_tx;
 828         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 829         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 830         struct nv_skb_map *tx_skb;
 831
 832         union ring_type tx_ring;
 833         u32 tx_flags;
 834         int tx_ring_size;
 835         int tx_limit;
 836         u32 tx_pkts_in_progress;
 837         struct nv_skb_map *tx_change_owner;
 838         struct nv_skb_map *tx_end_flip;
 839         int tx_stop;
 840
 841         /* TX software stats */
 842         struct u64_stats_sync swstats_tx_syncp;
 843         u64 stat_tx_packets; /* not always available in HW */
 844         u64 stat_tx_bytes;
 845         u64 stat_tx_dropped;
 846
 847         /* msi/msi-x fields */
 848         u32 msi_flags;
 849         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 850
 851         /* flow control */
 852         u32 pause_flags;
 853
 854         /* power saved state */
 855         u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
 856
 857         /* for different msi-x irq type */
 858         char name_rx[IFNAMSIZ + 3];       /* -rx    */
 859         char name_tx[IFNAMSIZ + 3];       /* -tx    */
 860         char name_other[IFNAMSIZ + 6];    /* -other */
 861 };
 862
 863 /*
 864  * Maximum number of loops until we assume that a bit in the irq mask
 865  * is stuck. Overridable with module param.
 866  */
 867 static int max_interrupt_work = 4;
 868
 869 /*
 870  * Optimization can be either throuput mode or cpu mode
 871  *
 872  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 873  * CPU Mode: Interrupts are controlled by a timer.
 874  */
 875 enum {
 876         NV_OPTIMIZATION_MODE_THROUGHPUT,
 877         NV_OPTIMIZATION_MODE_CPU,
 878         NV_OPTIMIZATION_MODE_DYNAMIC
 879 };
 880 static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
 881
 882 /*
 883  * Poll interval for timer irq
 884  *
 885  * This interval determines how frequent an interrupt is generated.
 886  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 887  * Min = 0, and Max = 65535
 888  */
 889 static int poll_interval = -1;
 890
 891 /*
 892  * MSI interrupts
 893  */
 894 enum {
 895         NV_MSI_INT_DISABLED,
 896         NV_MSI_INT_ENABLED
 897 };
 898 static int msi = NV_MSI_INT_ENABLED;
 899
 900 /*
 901  * MSIX interrupts
 902  */
 903 enum {
 904         NV_MSIX_INT_DISABLED,
 905         NV_MSIX_INT_ENABLED
 906 };
 907 static int msix = NV_MSIX_INT_ENABLED;
 908
 909 /*
 910  * DMA 64bit
 911  */
 912 enum {
 913         NV_DMA_64BIT_DISABLED,
 914         NV_DMA_64BIT_ENABLED
 915 };
 916 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 917
 918 /*
 919  * Debug output control for tx_timeout
 920  */
 921 static bool debug_tx_timeout = false;
 922
 923 /*
 924  * Crossover Detection
 925  * Realtek 8201 phy + some OEM boards do not work properly.
 926  */
 927 enum {
 928         NV_CROSSOVER_DETECTION_DISABLED,
 929         NV_CROSSOVER_DETECTION_ENABLED
 930 };
 931 static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
 932
 933 /*
 934  * Power down phy when interface is down (persists through reboot;
 935  * older Linux and other OSes may not power it up again)
 936  */
 937 static int phy_power_down;
 938
 939 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 940 {
 941         return netdev_priv(dev);
 942 }
 943
 944 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 945 {
 946         return ((struct fe_priv *)netdev_priv(dev))->base;
 947 }
 948
 949 static inline void pci_push(u8 __iomem *base)
 950 {
 951         /* force out pending posted writes */
 952         readl(base);
 953 }
 954
 955 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 956 {
 957         return le32_to_cpu(prd->flaglen)
 958                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 959 }
 960
 961 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 962 {
 963         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 964 }
 965
 966 static bool nv_optimized(struct fe_priv *np)
 967 {
 968         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 969                 return false;
 970         return true;
 971 }
 972
 973 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 974                      int delay, int delaymax)
 975 {
 976         u8 __iomem *base = get_hwbase(dev);
 977
 978         pci_push(base);
 979         do {
 980                 udelay(delay);
 981                 delaymax -= delay;
 982                 if (delaymax < 0)
 983                         return 1;
 984         } while ((readl(base + offset) & mask) != target);
 985         return 0;
 986 }
 987
 988 #define NV_SETUP_RX_RING 0x01
 989 #define NV_SETUP_TX_RING 0x02
 990
 991 static inline u32 dma_low(dma_addr_t addr)
 992 {
 993         return addr;
 994 }
 995
 996 static inline u32 dma_high(dma_addr_t addr)
 997 {
 998         return addr>>31>>1;     /* 0 if 32bit, shift down by 32 if 64bit */
 999 }
1000
1001 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
1002 {
1003         struct fe_priv *np = get_nvpriv(dev);
1004         u8 __iomem *base = get_hwbase(dev);
1005
1006         if (!nv_optimized(np)) {
1007                 if (rxtx_flags & NV_SETUP_RX_RING)
1008                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1009                 if (rxtx_flags & NV_SETUP_TX_RING)
1010                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1011         } else {
1012                 if (rxtx_flags & NV_SETUP_RX_RING) {
1013                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1014                         writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
1015                 }
1016                 if (rxtx_flags & NV_SETUP_TX_RING) {
1017                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1018                         writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
1019                 }
1020         }
1021 }
1022
1023 static void free_rings(struct net_device *dev)
1024 {
1025         struct fe_priv *np = get_nvpriv(dev);
1026
1027         if (!nv_optimized(np)) {
1028                 if (np->rx_ring.orig)
1029                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
1030                                             np->rx_ring.orig, np->ring_addr);
1031         } else {
1032                 if (np->rx_ring.ex)
1033                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
1034                                             np->rx_ring.ex, np->ring_addr);
1035         }
1036         kfree(np->rx_skb);
1037         kfree(np->tx_skb);
1038 }
1039
1040 static int using_multi_irqs(struct net_device *dev)
1041 {
1042         struct fe_priv *np = get_nvpriv(dev);
1043
1044         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1045             ((np->msi_flags & NV_MSI_X_ENABLED) &&
1046              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
1047                 return 0;
1048         else
1049                 return 1;
1050 }
1051
1052 static void nv_txrx_gate(struct net_device *dev, bool gate)
1053 {
1054         struct fe_priv *np = get_nvpriv(dev);
1055         u8 __iomem *base = get_hwbase(dev);
1056         u32 powerstate;
1057
1058         if (!np->mac_in_use &&
1059             (np->driver_data & DEV_HAS_POWER_CNTRL)) {
1060                 powerstate = readl(base + NvRegPowerState2);
1061                 if (gate)
1062                         powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
1063                 else
1064                         powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
1065                 writel(powerstate, base + NvRegPowerState2);
1066         }
1067 }
1068
1069 static void nv_enable_irq(struct net_device *dev)
1070 {
1071         struct fe_priv *np = get_nvpriv(dev);
1072
1073         if (!using_multi_irqs(dev)) {
1074                 if (np->msi_flags & NV_MSI_X_ENABLED)
1075                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1076                 else
1077                         enable_irq(np->pci_dev->irq);
1078         } else {
1079                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1080                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1081                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1082         }
1083 }
1084
1085 static void nv_disable_irq(struct net_device *dev)
1086 {
1087         struct fe_priv *np = get_nvpriv(dev);
1088
1089         if (!using_multi_irqs(dev)) {
1090                 if (np->msi_flags & NV_MSI_X_ENABLED)
1091                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1092                 else
1093                         disable_irq(np->pci_dev->irq);
1094         } else {
1095                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1096                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1097                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1098         }
1099 }
1100
1101 /* In MSIX mode, a write to irqmask behaves as XOR */
1102 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1103 {
1104         u8 __iomem *base = get_hwbase(dev);
1105
1106         writel(mask, base + NvRegIrqMask);
1107 }
1108
1109 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1110 {
1111         struct fe_priv *np = get_nvpriv(dev);
1112         u8 __iomem *base = get_hwbase(dev);
1113
1114         if (np->msi_flags & NV_MSI_X_ENABLED) {
1115                 writel(mask, base + NvRegIrqMask);
1116         } else {
1117                 if (np->msi_flags & NV_MSI_ENABLED)
1118                         writel(0, base + NvRegMSIIrqMask);
1119                 writel(0, base + NvRegIrqMask);
1120         }
1121 }
1122
1123 static void nv_napi_enable(struct net_device *dev)
1124 {
1125         struct fe_priv *np = get_nvpriv(dev);
1126
1127         napi_enable(&np->napi);
1128 }
1129
1130 static void nv_napi_disable(struct net_device *dev)
1131 {
1132         struct fe_priv *np = get_nvpriv(dev);
1133
1134         napi_disable(&np->napi);
1135 }
1136
1137 #define MII_READ        (-1)
1138 /* mii_rw: read/write a register on the PHY.
1139  *
1140  * Caller must guarantee serialization
1141  */
1142 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1143 {
1144         u8 __iomem *base = get_hwbase(dev);
1145         u32 reg;
1146         int retval;
1147
1148         writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1149
1150         reg = readl(base + NvRegMIIControl);
1151         if (reg & NVREG_MIICTL_INUSE) {
1152                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1153                 udelay(NV_MIIBUSY_DELAY);
1154         }
1155
1156         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1157         if (value != MII_READ) {
1158                 writel(value, base + NvRegMIIData);
1159                 reg |= NVREG_MIICTL_WRITE;
1160         }
1161         writel(reg, base + NvRegMIIControl);
1162
1163         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1164                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
1165                 retval = -1;
1166         } else if (value != MII_READ) {
1167                 /* it was a write operation - fewer failures are detectable */
1168                 retval = 0;
1169         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1170                 retval = -1;
1171         } else {
1172                 retval = readl(base + NvRegMIIData);
1173         }
1174
1175         return retval;
1176 }
1177
1178 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1179 {
1180         struct fe_priv *np = netdev_priv(dev);
1181         u32 miicontrol;
1182         unsigned int tries = 0;
1183
1184         miicontrol = BMCR_RESET | bmcr_setup;
1185         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
1186                 return -1;
1187
1188         /* wait for 500ms */
1189         msleep(500);
1190
1191         /* must wait till reset is deasserted */
1192         while (miicontrol & BMCR_RESET) {
1193                 usleep_range(10000, 20000);
1194                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1195                 /* FIXME: 100 tries seem excessive */
1196                 if (tries++ > 100)
1197                         return -1;
1198         }
1199         return 0;
1200 }
1201
1202 static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
1203 {
1204         static const struct {
1205                 int reg;
1206                 int init;
1207         } ri[] = {
1208                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1209                 { PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
1210                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
1211                 { PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
1212                 { PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
1213                 { PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
1214                 { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1215         };
1216         int i;
1217
1218         for (i = 0; i < ARRAY_SIZE(ri); i++) {
1219                 if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
1220                         return PHY_ERROR;
1221         }
1222
1223         return 0;
1224 }
1225
1226 static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
1227 {
1228         u32 reg;
1229         u8 __iomem *base = get_hwbase(dev);
1230         u32 powerstate = readl(base + NvRegPowerState2);
1231
1232         /* need to perform hw phy reset */
1233         powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1234         writel(powerstate, base + NvRegPowerState2);
1235         msleep(25);
1236
1237         powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1238         writel(powerstate, base + NvRegPowerState2);
1239         msleep(25);
1240
1241         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1242         reg |= PHY_REALTEK_INIT9;
1243         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
1244                 return PHY_ERROR;
1245         if (mii_rw(dev, np->phyaddr,
1246                    PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
1247                 return PHY_ERROR;
1248         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1249         if (!(reg & PHY_REALTEK_INIT11)) {
1250                 reg |= PHY_REALTEK_INIT11;
1251                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
1252                         return PHY_ERROR;
1253         }
1254         if (mii_rw(dev, np->phyaddr,
1255                    PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1256                 return PHY_ERROR;
1257
1258         return 0;
1259 }
1260
1261 static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
1262 {
1263         u32 phy_reserved;
1264
1265         if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
1266                 phy_reserved = mii_rw(dev, np->phyaddr,
1267                                       PHY_REALTEK_INIT_REG6, MII_READ);
1268                 phy_reserved |= PHY_REALTEK_INIT7;
1269                 if (mii_rw(dev, np->phyaddr,
1270                            PHY_REALTEK_INIT_REG6, phy_reserved))
1271                         return PHY_ERROR;
1272         }
1273
1274         return 0;
1275 }
1276
1277 static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
1278 {
1279         u32 phy_reserved;
1280
1281         if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1282                 if (mii_rw(dev, np->phyaddr,
1283                            PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
1284                         return PHY_ERROR;
1285                 phy_reserved = mii_rw(dev, np->phyaddr,
1286                                       PHY_REALTEK_INIT_REG2, MII_READ);
1287                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1288                 phy_reserved |= PHY_REALTEK_INIT3;
1289                 if (mii_rw(dev, np->phyaddr,
1290                            PHY_REALTEK_INIT_REG2, phy_reserved))
1291                         return PHY_ERROR;
1292                 if (mii_rw(dev, np->phyaddr,
1293                            PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1294                         return PHY_ERROR;
1295         }
1296
1297         return 0;
1298 }
1299
1300 static int init_cicada(struct net_device *dev, struct fe_priv *np,
1301                        u32 phyinterface)
1302 {
1303         u32 phy_reserved;
1304
1305         if (phyinterface & PHY_RGMII) {
1306                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1307                 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1308                 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1309                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
1310                         return PHY_ERROR;
1311                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1312                 phy_reserved |= PHY_CICADA_INIT5;
1313                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
1314                         return PHY_ERROR;
1315         }
1316         phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1317         phy_reserved |= PHY_CICADA_INIT6;
1318         if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
1319                 return PHY_ERROR;
1320
1321         return 0;
1322 }
1323
1324 static int init_vitesse(struct net_device *dev, struct fe_priv *np)
1325 {
1326         u32 phy_reserved;
1327
1328         if (mii_rw(dev, np->phyaddr,
1329                    PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
1330                 return PHY_ERROR;
1331         if (mii_rw(dev, np->phyaddr,
1332                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
1333                 return PHY_ERROR;
1334         phy_reserved = mii_rw(dev, np->phyaddr,
1335                               PHY_VITESSE_INIT_REG4, MII_READ);
1336         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1337                 return PHY_ERROR;
1338         phy_reserved = mii_rw(dev, np->phyaddr,
1339                               PHY_VITESSE_INIT_REG3, MII_READ);
1340         phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1341         phy_reserved |= PHY_VITESSE_INIT3;
1342         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1343                 return PHY_ERROR;
1344         if (mii_rw(dev, np->phyaddr,
1345                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
1346                 return PHY_ERROR;
1347         if (mii_rw(dev, np->phyaddr,
1348                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
1349                 return PHY_ERROR;
1350         phy_reserved = mii_rw(dev, np->phyaddr,
1351                               PHY_VITESSE_INIT_REG4, MII_READ);
1352         phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1353         phy_reserved |= PHY_VITESSE_INIT3;
1354         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1355                 return PHY_ERROR;
1356         phy_reserved = mii_rw(dev, np->phyaddr,
1357                               PHY_VITESSE_INIT_REG3, MII_READ);
1358         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1359                 return PHY_ERROR;
1360         if (mii_rw(dev, np->phyaddr,
1361                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
1362                 return PHY_ERROR;
1363         if (mii_rw(dev, np->phyaddr,
1364                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
1365                 return PHY_ERROR;
1366         phy_reserved = mii_rw(dev, np->phyaddr,
1367                               PHY_VITESSE_INIT_REG4, MII_READ);
1368         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1369                 return PHY_ERROR;
1370         phy_reserved = mii_rw(dev, np->phyaddr,
1371                               PHY_VITESSE_INIT_REG3, MII_READ);
1372         phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1373         phy_reserved |= PHY_VITESSE_INIT8;
1374         if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1375                 return PHY_ERROR;
1376         if (mii_rw(dev, np->phyaddr,
1377                    PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
1378                 return PHY_ERROR;
1379         if (mii_rw(dev, np->phyaddr,
1380                    PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
1381                 return PHY_ERROR;
1382
1383         return 0;
1384 }
1385
1386 static int phy_init(struct net_device *dev)
1387 {
1388         struct fe_priv *np = get_nvpriv(dev);
1389         u8 __iomem *base = get_hwbase(dev);
1390         u32 phyinterface;
1391         u32 mii_status, mii_control, mii_control_1000, reg;
1392
1393         /* phy errata for E3016 phy */
1394         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1395                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1396                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1397                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1398                         netdev_info(dev, "%s: phy write to errata reg failed\n",
1399                                     pci_name(np->pci_dev));
1400                         return PHY_ERROR;
1401                 }
1402         }
1403         if (np->phy_oui == PHY_OUI_REALTEK) {
1404                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1405                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1406                         if (init_realtek_8211b(dev, np)) {
1407                                 netdev_info(dev, "%s: phy init failed\n",
1408                                             pci_name(np->pci_dev));
1409                                 return PHY_ERROR;
1410                         }
1411                 } else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1412                            np->phy_rev == PHY_REV_REALTEK_8211C) {
1413                         if (init_realtek_8211c(dev, np)) {
1414                                 netdev_info(dev, "%s: phy init failed\n",
1415                                             pci_name(np->pci_dev));
1416                                 return PHY_ERROR;
1417                         }
1418                 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1419                         if (init_realtek_8201(dev, np)) {
1420                                 netdev_info(dev, "%s: phy init failed\n",
1421                                             pci_name(np->pci_dev));
1422                                 return PHY_ERROR;
1423                         }
1424                 }
1425         }
1426
1427         /* set advertise register */
1428         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1429         reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
1430                 ADVERTISE_100HALF | ADVERTISE_100FULL |
1431                 ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
1432         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1433                 netdev_info(dev, "%s: phy write to advertise failed\n",
1434                             pci_name(np->pci_dev));
1435                 return PHY_ERROR;
1436         }
1437
1438         /* get phy interface type */
1439         phyinterface = readl(base + NvRegPhyInterface);
1440
1441         /* see if gigabit phy */
1442         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1443         if (mii_status & PHY_GIGABIT) {
1444                 np->gigabit = PHY_GIGABIT;
1445                 mii_control_1000 = mii_rw(dev, np->phyaddr,
1446                                           MII_CTRL1000, MII_READ);
1447                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1448                 if (phyinterface & PHY_RGMII)
1449                         mii_control_1000 |= ADVERTISE_1000FULL;
1450                 else
1451                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1452
1453                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1454                         netdev_info(dev, "%s: phy init failed\n",
1455                                     pci_name(np->pci_dev));
1456                         return PHY_ERROR;
1457                 }
1458         } else
1459                 np->gigabit = 0;
1460
1461         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1462         mii_control |= BMCR_ANENABLE;
1463
1464         if (np->phy_oui == PHY_OUI_REALTEK &&
1465             np->phy_model == PHY_MODEL_REALTEK_8211 &&
1466             np->phy_rev == PHY_REV_REALTEK_8211C) {
1467                 /* start autoneg since we already performed hw reset above */
1468                 mii_control |= BMCR_ANRESTART;
1469                 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1470                         netdev_info(dev, "%s: phy init failed\n",
1471                                     pci_name(np->pci_dev));
1472                         return PHY_ERROR;
1473                 }
1474         } else {
1475                 /* reset the phy
1476                  * (certain phys need bmcr to be setup with reset)
1477                  */
1478                 if (phy_reset(dev, mii_control)) {
1479                         netdev_info(dev, "%s: phy reset failed\n",
1480                                     pci_name(np->pci_dev));
1481                         return PHY_ERROR;
1482                 }
1483         }
1484
1485         /* phy vendor specific configuration */
1486         if ((np->phy_oui == PHY_OUI_CICADA)) {
1487                 if (init_cicada(dev, np, phyinterface)) {
1488                         netdev_info(dev, "%s: phy init failed\n",
1489                                     pci_name(np->pci_dev));
1490                         return PHY_ERROR;
1491                 }
1492         } else if (np->phy_oui == PHY_OUI_VITESSE) {
1493                 if (init_vitesse(dev, np)) {
1494                         netdev_info(dev, "%s: phy init failed\n",
1495                                     pci_name(np->pci_dev));
1496                         return PHY_ERROR;
1497                 }
1498         } else if (np->phy_oui == PHY_OUI_REALTEK) {
1499                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1500                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1501                         /* reset could have cleared these out, set them back */
1502                         if (init_realtek_8211b(dev, np)) {
1503                                 netdev_info(dev, "%s: phy init failed\n",
1504                                             pci_name(np->pci_dev));
1505                                 return PHY_ERROR;
1506                         }
1507                 } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1508                         if (init_realtek_8201(dev, np) ||
1509                             init_realtek_8201_cross(dev, np)) {
1510                                 netdev_info(dev, "%s: phy init failed\n",
1511                                             pci_name(np->pci_dev));
1512                                 return PHY_ERROR;
1513                         }
1514                 }
1515         }
1516
1517         /* some phys clear out pause advertisement on reset, set it back */
1518         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1519
1520         /* restart auto negotiation, power down phy */
1521         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1522         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1523         if (phy_power_down)
1524                 mii_control |= BMCR_PDOWN;
1525         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
1526                 return PHY_ERROR;
1527
1528         return 0;
1529 }
1530
1531 static void nv_start_rx(struct net_device *dev)
1532 {
1533         struct fe_priv *np = netdev_priv(dev);
1534         u8 __iomem *base = get_hwbase(dev);
1535         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1536
1537         /* Already running? Stop it. */
1538         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1539                 rx_ctrl &= ~NVREG_RCVCTL_START;
1540                 writel(rx_ctrl, base + NvRegReceiverControl);
1541                 pci_push(base);
1542         }
1543         writel(np->linkspeed, base + NvRegLinkSpeed);
1544         pci_push(base);
1545         rx_ctrl |= NVREG_RCVCTL_START;
1546         if (np->mac_in_use)
1547                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1548         writel(rx_ctrl, base + NvRegReceiverControl);
1549         pci_push(base);
1550 }
1551
1552 static void nv_stop_rx(struct net_device *dev)
1553 {
1554         struct fe_priv *np = netdev_priv(dev);
1555         u8 __iomem *base = get_hwbase(dev);
1556         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1557
1558         if (!np->mac_in_use)
1559                 rx_ctrl &= ~NVREG_RCVCTL_START;
1560         else
1561                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1562         writel(rx_ctrl, base + NvRegReceiverControl);
1563         if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1564                       NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
1565                 netdev_info(dev, "%s: ReceiverStatus remained busy\n",
1566                             __func__);
1567
1568         udelay(NV_RXSTOP_DELAY2);
1569         if (!np->mac_in_use)
1570                 writel(0, base + NvRegLinkSpeed);
1571 }
1572
1573 static void nv_start_tx(struct net_device *dev)
1574 {
1575         struct fe_priv *np = netdev_priv(dev);
1576         u8 __iomem *base = get_hwbase(dev);
1577         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1578
1579         tx_ctrl |= NVREG_XMITCTL_START;
1580         if (np->mac_in_use)
1581                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1582         writel(tx_ctrl, base + NvRegTransmitterControl);
1583         pci_push(base);
1584 }
1585
1586 static void nv_stop_tx(struct net_device *dev)
1587 {
1588         struct fe_priv *np = netdev_priv(dev);
1589         u8 __iomem *base = get_hwbase(dev);
1590         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1591
1592         if (!np->mac_in_use)
1593                 tx_ctrl &= ~NVREG_XMITCTL_START;
1594         else
1595                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1596         writel(tx_ctrl, base + NvRegTransmitterControl);
1597         if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1598                       NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
1599                 netdev_info(dev, "%s: TransmitterStatus remained busy\n",
1600                             __func__);
1601
1602         udelay(NV_TXSTOP_DELAY2);
1603         if (!np->mac_in_use)
1604                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1605                        base + NvRegTransmitPoll);
1606 }
1607
1608 static void nv_start_rxtx(struct net_device *dev)
1609 {
1610         nv_start_rx(dev);
1611         nv_start_tx(dev);
1612 }
1613
1614 static void nv_stop_rxtx(struct net_device *dev)
1615 {
1616         nv_stop_rx(dev);
1617         nv_stop_tx(dev);
1618 }
1619
1620 static void nv_txrx_reset(struct net_device *dev)
1621 {
1622         struct fe_priv *np = netdev_priv(dev);
1623         u8 __iomem *base = get_hwbase(dev);
1624
1625         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1626         pci_push(base);
1627         udelay(NV_TXRX_RESET_DELAY);
1628         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1629         pci_push(base);
1630 }
1631
1632 static void nv_mac_reset(struct net_device *dev)
1633 {
1634         struct fe_priv *np = netdev_priv(dev);
1635         u8 __iomem *base = get_hwbase(dev);
1636         u32 temp1, temp2, temp3;
1637
1638         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1639         pci_push(base);
1640
1641         /* save registers since they will be cleared on reset */
1642         temp1 = readl(base + NvRegMacAddrA);
1643         temp2 = readl(base + NvRegMacAddrB);
1644         temp3 = readl(base + NvRegTransmitPoll);
1645
1646         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1647         pci_push(base);
1648         udelay(NV_MAC_RESET_DELAY);
1649         writel(0, base + NvRegMacReset);
1650         pci_push(base);
1651         udelay(NV_MAC_RESET_DELAY);
1652
1653         /* restore saved registers */
1654         writel(temp1, base + NvRegMacAddrA);
1655         writel(temp2, base + NvRegMacAddrB);
1656         writel(temp3, base + NvRegTransmitPoll);
1657
1658         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1659         pci_push(base);
1660 }
1661
1662 /* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
1663 static void nv_update_stats(struct net_device *dev)
1664 {
1665         struct fe_priv *np = netdev_priv(dev);
1666         u8 __iomem *base = get_hwbase(dev);
1667
1668         /* If it happens that this is run in top-half context, then
1669          * replace the spin_lock of hwstats_lock with
1670          * spin_lock_irqsave() in calling functions. */
1671         WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half");
1672         assert_spin_locked(&np->hwstats_lock);
1673
1674         /* query hardware */
1675         np->estats.tx_bytes += readl(base + NvRegTxCnt);
1676         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1677         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1678         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1679         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1680         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1681         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1682         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1683         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1684         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1685         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1686         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1687         np->estats.rx_runt += readl(base + NvRegRxRunt);
1688         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1689         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1690         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1691         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1692         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1693         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1694         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1695         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1696         np->estats.rx_packets =
1697                 np->estats.rx_unicast +
1698                 np->estats.rx_multicast +
1699                 np->estats.rx_broadcast;
1700         np->estats.rx_errors_total =
1701                 np->estats.rx_crc_errors +
1702                 np->estats.rx_over_errors +
1703                 np->estats.rx_frame_error +
1704                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1705                 np->estats.rx_late_collision +
1706                 np->estats.rx_runt +
1707                 np->estats.rx_frame_too_long;
1708         np->estats.tx_errors_total =
1709                 np->estats.tx_late_collision +
1710                 np->estats.tx_fifo_errors +
1711                 np->estats.tx_carrier_errors +
1712                 np->estats.tx_excess_deferral +
1713                 np->estats.tx_retry_error;
1714
1715         if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1716                 np->estats.tx_deferral += readl(base + NvRegTxDef);
1717                 np->estats.tx_packets += readl(base + NvRegTxFrame);
1718                 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1719                 np->estats.tx_pause += readl(base + NvRegTxPause);
1720                 np->estats.rx_pause += readl(base + NvRegRxPause);
1721                 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1722                 np->estats.rx_errors_total += np->estats.rx_drop_frame;
1723         }
1724
1725         if (np->driver_data & DEV_HAS_STATISTICS_V3) {
1726                 np->estats.tx_unicast += readl(base + NvRegTxUnicast);
1727                 np->estats.tx_multicast += readl(base + NvRegTxMulticast);
1728                 np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
1729         }
1730 }
1731
1732 /*
1733  * nv_get_stats64: dev->ndo_get_stats64 function
1734  * Get latest stats value from the nic.
1735  * Called with read_lock(&dev_base_lock) held for read -
1736  * only synchronized against unregister_netdevice.
1737  */
1738 static struct rtnl_link_stats64*
1739 nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
1740         __acquires(&netdev_priv(dev)->hwstats_lock)
1741         __releases(&netdev_priv(dev)->hwstats_lock)
1742 {
1743         struct fe_priv *np = netdev_priv(dev);
1744         unsigned int syncp_start;
1745
1746         /*
1747          * Note: because HW stats are not always available and for
1748          * consistency reasons, the following ifconfig stats are
1749          * managed by software: rx_bytes, tx_bytes, rx_packets and
1750          * tx_packets. The related hardware stats reported by ethtool
1751          * should be equivalent to these ifconfig stats, with 4
1752          * additional bytes per packet (Ethernet FCS CRC), except for
1753          * tx_packets when TSO kicks in.
1754          */
1755
1756         /* software stats */
1757         do {
1758                 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_rx_syncp);
1759                 storage->rx_packets       = np->stat_rx_packets;
1760                 storage->rx_bytes         = np->stat_rx_bytes;
1761                 storage->rx_dropped       = np->stat_rx_dropped;
1762                 storage->rx_missed_errors = np->stat_rx_missed_errors;
1763         } while (u64_stats_fetch_retry_bh(&np->swstats_rx_syncp, syncp_start));
1764
1765         do {
1766                 syncp_start = u64_stats_fetch_begin_bh(&np->swstats_tx_syncp);
1767                 storage->tx_packets = np->stat_tx_packets;
1768                 storage->tx_bytes   = np->stat_tx_bytes;
1769                 storage->tx_dropped = np->stat_tx_dropped;
1770         } while (u64_stats_fetch_retry_bh(&np->swstats_tx_syncp, syncp_start));
1771
1772         /* If the nic supports hw counters then retrieve latest values */
1773         if (np->driver_data & DEV_HAS_STATISTICS_V123) {
1774                 spin_lock_bh(&np->hwstats_lock);
1775
1776                 nv_update_stats(dev);
1777
1778                 /* generic stats */
1779                 storage->rx_errors = np->estats.rx_errors_total;
1780                 storage->tx_errors = np->estats.tx_errors_total;
1781
1782                 /* meaningful only when NIC supports stats v3 */
1783                 storage->multicast = np->estats.rx_multicast;
1784
1785                 /* detailed rx_errors */
1786                 storage->rx_length_errors = np->estats.rx_length_error;
1787                 storage->rx_over_errors   = np->estats.rx_over_errors;
1788                 storage->rx_crc_errors    = np->estats.rx_crc_errors;
1789                 storage->rx_frame_errors  = np->estats.rx_frame_align_error;
1790                 storage->rx_fifo_errors   = np->estats.rx_drop_frame;
1791
1792                 /* detailed tx_errors */
1793                 storage->tx_carrier_errors = np->estats.tx_carrier_errors;
1794                 storage->tx_fifo_errors    = np->estats.tx_fifo_errors;
1795
1796                 spin_unlock_bh(&np->hwstats_lock);
1797         }
1798
1799         return storage;
1800 }
1801
1802 /*
1803  * nv_alloc_rx: fill rx ring entries.
1804  * Return 1 if the allocations for the skbs failed and the
1805  * rx engine is without Available descriptors
1806  */
1807 static int nv_alloc_rx(struct net_device *dev)
1808 {
1809         struct fe_priv *np = netdev_priv(dev);
1810         struct ring_desc *less_rx;
1811
1812         less_rx = np->get_rx.orig;
1813         if (less_rx-- == np->first_rx.orig)
1814                 less_rx = np->last_rx.orig;
1815
1816         while (np->put_rx.orig != less_rx) {
1817                 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1818                 if (skb) {
1819                         np->put_rx_ctx->skb = skb;
1820                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1821                                                              skb->data,
1822                                                              skb_tailroom(skb),
1823                                                              PCI_DMA_FROMDEVICE);
1824                         if (pci_dma_mapping_error(np->pci_dev,
1825                                                   np->put_rx_ctx->dma)) {
1826                                 kfree_skb(skb);
1827                                 goto packet_dropped;
1828                         }
1829                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1830                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1831                         wmb();
1832                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1833                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1834                                 np->put_rx.orig = np->first_rx.orig;
1835                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1836                                 np->put_rx_ctx = np->first_rx_ctx;
1837                 } else {
1838 packet_dropped:
1839                         u64_stats_update_begin(&np->swstats_rx_syncp);
1840                         np->stat_rx_dropped++;
1841                         u64_stats_update_end(&np->swstats_rx_syncp);
1842                         return 1;
1843                 }
1844         }
1845         return 0;
1846 }
1847
1848 static int nv_alloc_rx_optimized(struct net_device *dev)
1849 {
1850         struct fe_priv *np = netdev_priv(dev);
1851         struct ring_desc_ex *less_rx;
1852
1853         less_rx = np->get_rx.ex;
1854         if (less_rx-- == np->first_rx.ex)
1855                 less_rx = np->last_rx.ex;
1856
1857         while (np->put_rx.ex != less_rx) {
1858                 struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1859                 if (skb) {
1860                         np->put_rx_ctx->skb = skb;
1861                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1862                                                              skb->data,
1863                                                              skb_tailroom(skb),
1864                                                              PCI_DMA_FROMDEVICE);
1865                         if (pci_dma_mapping_error(np->pci_dev,
1866                                                   np->put_rx_ctx->dma)) {
1867                                 kfree_skb(skb);
1868                                 goto packet_dropped;
1869                         }
1870                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1871                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1872                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1873                         wmb();
1874                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1875                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1876                                 np->put_rx.ex = np->first_rx.ex;
1877                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1878                                 np->put_rx_ctx = np->first_rx_ctx;
1879                 } else {
1880 packet_dropped:
1881                         u64_stats_update_begin(&np->swstats_rx_syncp);
1882                         np->stat_rx_dropped++;
1883                         u64_stats_update_end(&np->swstats_rx_syncp);
1884                         return 1;
1885                 }
1886         }
1887         return 0;
1888 }
1889
1890 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1891 static void nv_do_rx_refill(unsigned long data)
1892 {
1893         struct net_device *dev = (struct net_device *) data;
1894         struct fe_priv *np = netdev_priv(dev);
1895
1896         /* Just reschedule NAPI rx processing */
1897         napi_schedule(&np->napi);
1898 }
1899
1900 static void nv_init_rx(struct net_device *dev)
1901 {
1902         struct fe_priv *np = netdev_priv(dev);
1903         int i;
1904
1905         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1906
1907         if (!nv_optimized(np))
1908                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1909         else
1910                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1911         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1912         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1913
1914         for (i = 0; i < np->rx_ring_size; i++) {
1915                 if (!nv_optimized(np)) {
1916                         np->rx_ring.orig[i].flaglen = 0;
1917                         np->rx_ring.orig[i].buf = 0;
1918                 } else {
1919                         np->rx_ring.ex[i].flaglen = 0;
1920                         np->rx_ring.ex[i].txvlan = 0;
1921                         np->rx_ring.ex[i].bufhigh = 0;
1922                         np->rx_ring.ex[i].buflow = 0;
1923                 }
1924                 np->rx_skb[i].skb = NULL;
1925                 np->rx_skb[i].dma = 0;
1926         }
1927 }
1928
1929 static void nv_init_tx(struct net_device *dev)
1930 {
1931         struct fe_priv *np = netdev_priv(dev);
1932         int i;
1933
1934         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1935
1936         if (!nv_optimized(np))
1937                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1938         else
1939                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1940         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1941         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1942         netdev_reset_queue(np->dev);
1943         np->tx_pkts_in_progress = 0;
1944         np->tx_change_owner = NULL;
1945         np->tx_end_flip = NULL;
1946         np->tx_stop = 0;
1947
1948         for (i = 0; i < np->tx_ring_size; i++) {
1949                 if (!nv_optimized(np)) {
1950                         np->tx_ring.orig[i].flaglen = 0;
1951                         np->tx_ring.orig[i].buf = 0;
1952                 } else {
1953                         np->tx_ring.ex[i].flaglen = 0;
1954                         np->tx_ring.ex[i].txvlan = 0;
1955                         np->tx_ring.ex[i].bufhigh = 0;
1956                         np->tx_ring.ex[i].buflow = 0;
1957                 }
1958                 np->tx_skb[i].skb = NULL;
1959                 np->tx_skb[i].dma = 0;
1960                 np->tx_skb[i].dma_len = 0;
1961                 np->tx_skb[i].dma_single = 0;
1962                 np->tx_skb[i].first_tx_desc = NULL;
1963                 np->tx_skb[i].next_tx_ctx = NULL;
1964         }
1965 }
1966
1967 static int nv_init_ring(struct net_device *dev)
1968 {
1969         struct fe_priv *np = netdev_priv(dev);
1970
1971         nv_init_tx(dev);
1972         nv_init_rx(dev);
1973
1974         if (!nv_optimized(np))
1975                 return nv_alloc_rx(dev);
1976         else
1977                 return nv_alloc_rx_optimized(dev);
1978 }
1979
1980 static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1981 {
1982         if (tx_skb->dma) {
1983                 if (tx_skb->dma_single)
1984                         pci_unmap_single(np->pci_dev, tx_skb->dma,
1985                                          tx_skb->dma_len,
1986                                          PCI_DMA_TODEVICE);
1987                 else
1988                         pci_unmap_page(np->pci_dev, tx_skb->dma,
1989                                        tx_skb->dma_len,
1990                                        PCI_DMA_TODEVICE);
1991                 tx_skb->dma = 0;
1992         }
1993 }
1994
1995 static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1996 {
1997         nv_unmap_txskb(np, tx_skb);
1998         if (tx_skb->skb) {
1999                 dev_kfree_skb_any(tx_skb->skb);
2000                 tx_skb->skb = NULL;
2001                 return 1;
2002         }
2003         return 0;
2004 }
2005
2006 static void nv_drain_tx(struct net_device *dev)
2007 {
2008         struct fe_priv *np = netdev_priv(dev);
2009         unsigned int i;
2010
2011         for (i = 0; i < np->tx_ring_size; i++) {
2012                 if (!nv_optimized(np)) {
2013                         np->tx_ring.orig[i].flaglen = 0;
2014                         np->tx_ring.orig[i].buf = 0;
2015                 } else {
2016                         np->tx_ring.ex[i].flaglen = 0;
2017                         np->tx_ring.ex[i].txvlan = 0;
2018                         np->tx_ring.ex[i].bufhigh = 0;
2019                         np->tx_ring.ex[i].buflow = 0;
2020                 }
2021                 if (nv_release_txskb(np, &np->tx_skb[i])) {
2022                         u64_stats_update_begin(&np->swstats_tx_syncp);
2023                         np->stat_tx_dropped++;
2024                         u64_stats_update_end(&np->swstats_tx_syncp);
2025                 }
2026                 np->tx_skb[i].dma = 0;
2027                 np->tx_skb[i].dma_len = 0;
2028                 np->tx_skb[i].dma_single = 0;
2029                 np->tx_skb[i].first_tx_desc = NULL;
2030                 np->tx_skb[i].next_tx_ctx = NULL;
2031         }
2032         np->tx_pkts_in_progress = 0;
2033         np->tx_change_owner = NULL;
2034         np->tx_end_flip = NULL;
2035 }
2036
2037 static void nv_drain_rx(struct net_device *dev)
2038 {
2039         struct fe_priv *np = netdev_priv(dev);
2040         int i;
2041
2042         for (i = 0; i < np->rx_ring_size; i++) {
2043                 if (!nv_optimized(np)) {
2044                         np->rx_ring.orig[i].flaglen = 0;
2045                         np->rx_ring.orig[i].buf = 0;
2046                 } else {
2047                         np->rx_ring.ex[i].flaglen = 0;
2048                         np->rx_ring.ex[i].txvlan = 0;
2049                         np->rx_ring.ex[i].bufhigh = 0;
2050                         np->rx_ring.ex[i].buflow = 0;
2051                 }
2052                 wmb();
2053                 if (np->rx_skb[i].skb) {
2054                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
2055                                          (skb_end_pointer(np->rx_skb[i].skb) -
2056                                           np->rx_skb[i].skb->data),
2057                                          PCI_DMA_FROMDEVICE);
2058                         dev_kfree_skb(np->rx_skb[i].skb);
2059                         np->rx_skb[i].skb = NULL;
2060                 }
2061         }
2062 }
2063
2064 static void nv_drain_rxtx(struct net_device *dev)
2065 {
2066         nv_drain_tx(dev);
2067         nv_drain_rx(dev);
2068 }
2069
2070 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
2071 {
2072         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
2073 }
2074
2075 static void nv_legacybackoff_reseed(struct net_device *dev)
2076 {
2077         u8 __iomem *base = get_hwbase(dev);
2078         u32 reg;
2079         u32 low;
2080         int tx_status = 0;
2081
2082         reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
2083         get_random_bytes(&low, sizeof(low));
2084         reg |= low & NVREG_SLOTTIME_MASK;
2085
2086         /* Need to stop tx before change takes effect.
2087          * Caller has already gained np->lock.
2088          */
2089         tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
2090         if (tx_status)
2091                 nv_stop_tx(dev);
2092         nv_stop_rx(dev);
2093         writel(reg, base + NvRegSlotTime);
2094         if (tx_status)
2095                 nv_start_tx(dev);
2096         nv_start_rx(dev);
2097 }
2098
2099 /* Gear Backoff Seeds */
2100 #define BACKOFF_SEEDSET_ROWS    8
2101 #define BACKOFF_SEEDSET_LFSRS   15
2102
2103 /* Known Good seed sets */
2104 static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
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, 385, 761, 790, 974},
2107         {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2108         {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
2109         {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
2110         {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
2111         {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800,  84},
2112         {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
2113
2114 static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2115         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2116         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2117         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
2118         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2119         {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2120         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2121         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2122         {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
2123
2124 static void nv_gear_backoff_reseed(struct net_device *dev)
2125 {
2126         u8 __iomem *base = get_hwbase(dev);
2127         u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
2128         u32 temp, seedset, combinedSeed;
2129         int i;
2130
2131         /* Setup seed for free running LFSR */
2132         /* We are going to read the time stamp counter 3 times
2133            and swizzle bits around to increase randomness */
2134         get_random_bytes(&miniseed1, sizeof(miniseed1));
2135         miniseed1 &= 0x0fff;
2136         if (miniseed1 == 0)
2137                 miniseed1 = 0xabc;
2138
2139         get_random_bytes(&miniseed2, sizeof(miniseed2));
2140         miniseed2 &= 0x0fff;
2141         if (miniseed2 == 0)
2142                 miniseed2 = 0xabc;
2143         miniseed2_reversed =
2144                 ((miniseed2 & 0xF00) >> 8) |
2145                  (miniseed2 & 0x0F0) |
2146                  ((miniseed2 & 0x00F) << 8);
2147
2148         get_random_bytes(&miniseed3, sizeof(miniseed3));
2149         miniseed3 &= 0x0fff;
2150         if (miniseed3 == 0)
2151                 miniseed3 = 0xabc;
2152         miniseed3_reversed =
2153                 ((miniseed3 & 0xF00) >> 8) |
2154                  (miniseed3 & 0x0F0) |
2155                  ((miniseed3 & 0x00F) << 8);
2156
2157         combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2158                        (miniseed2 ^ miniseed3_reversed);
2159
2160         /* Seeds can not be zero */
2161         if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2162                 combinedSeed |= 0x08;
2163         if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2164                 combinedSeed |= 0x8000;
2165
2166         /* No need to disable tx here */
2167         temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2168         temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2169         temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2170         writel(temp, base + NvRegBackOffControl);
2171
2172         /* Setup seeds for all gear LFSRs. */
2173         get_random_bytes(&seedset, sizeof(seedset));
2174         seedset = seedset % BACKOFF_SEEDSET_ROWS;
2175         for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
2176                 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2177                 temp |= main_seedset[seedset][i-1] & 0x3ff;
2178                 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2179                 writel(temp, base + NvRegBackOffControl);
2180         }
2181 }
2182
2183 /*
2184  * nv_start_xmit: dev->hard_start_xmit function
2185  * Called with netif_tx_lock held.
2186  */
2187 static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2188 {
2189         struct fe_priv *np = netdev_priv(dev);
2190         u32 tx_flags = 0;
2191         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2192         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2193         unsigned int i;
2194         u32 offset = 0;
2195         u32 bcnt;
2196         u32 size = skb_headlen(skb);
2197         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2198         u32 empty_slots;
2199         struct ring_desc *put_tx;
2200         struct ring_desc *start_tx;
2201         struct ring_desc *prev_tx;
2202         struct nv_skb_map *prev_tx_ctx;
2203         unsigned long flags;
2204
2205         /* add fragments to entries count */
2206         for (i = 0; i < fragments; i++) {
2207                 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2208
2209                 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2210                            ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2211         }
2212
2213         spin_lock_irqsave(&np->lock, flags);
2214         empty_slots = nv_get_empty_tx_slots(np);
2215         if (unlikely(empty_slots <= entries)) {
2216                 netif_stop_queue(dev);
2217                 np->tx_stop = 1;
2218                 spin_unlock_irqrestore(&np->lock, flags);
2219                 return NETDEV_TX_BUSY;
2220         }
2221         spin_unlock_irqrestore(&np->lock, flags);
2222
2223         start_tx = put_tx = np->put_tx.orig;
2224
2225         /* setup the header buffer */
2226         do {
2227                 prev_tx = put_tx;
2228                 prev_tx_ctx = np->put_tx_ctx;
2229                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2230                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2231                                                 PCI_DMA_TODEVICE);
2232                 if (pci_dma_mapping_error(np->pci_dev,
2233                                           np->put_tx_ctx->dma)) {
2234                         /* on DMA mapping error - drop the packet */
2235                         kfree_skb(skb);
2236                         u64_stats_update_begin(&np->swstats_tx_syncp);
2237                         np->stat_tx_dropped++;
2238                         u64_stats_update_end(&np->swstats_tx_syncp);
2239                         return NETDEV_TX_OK;
2240                 }
2241                 np->put_tx_ctx->dma_len = bcnt;
2242                 np->put_tx_ctx->dma_single = 1;
2243                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2244                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2245
2246                 tx_flags = np->tx_flags;
2247                 offset += bcnt;
2248                 size -= bcnt;
2249                 if (unlikely(put_tx++ == np->last_tx.orig))
2250                         put_tx = np->first_tx.orig;
2251                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2252                         np->put_tx_ctx = np->first_tx_ctx;
2253         } while (size);
2254
2255         /* setup the fragments */
2256         for (i = 0; i < fragments; i++) {
2257                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2258                 u32 frag_size = skb_frag_size(frag);
2259                 offset = 0;
2260
2261                 do {
2262                         prev_tx = put_tx;
2263                         prev_tx_ctx = np->put_tx_ctx;
2264                         bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2265                         np->put_tx_ctx->dma = skb_frag_dma_map(
2266                                                         &np->pci_dev->dev,
2267                                                         frag, offset,
2268                                                         bcnt,
2269                                                         DMA_TO_DEVICE);
2270                         np->put_tx_ctx->dma_len = bcnt;
2271                         np->put_tx_ctx->dma_single = 0;
2272                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2273                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2274
2275                         offset += bcnt;
2276                         frag_size -= bcnt;
2277                         if (unlikely(put_tx++ == np->last_tx.orig))
2278                                 put_tx = np->first_tx.orig;
2279                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2280                                 np->put_tx_ctx = np->first_tx_ctx;
2281                 } while (frag_size);
2282         }
2283
2284         /* set last fragment flag  */
2285         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2286
2287         /* save skb in this slot's context area */
2288         prev_tx_ctx->skb = skb;
2289
2290         if (skb_is_gso(skb))
2291                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2292         else
2293                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2294                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2295
2296         spin_lock_irqsave(&np->lock, flags);
2297
2298         /* set tx flags */
2299         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2300
2301         netdev_sent_queue(np->dev, skb->len);
2302
2303         skb_tx_timestamp(skb);
2304
2305         np->put_tx.orig = put_tx;
2306
2307         spin_unlock_irqrestore(&np->lock, flags);
2308
2309         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2310         return NETDEV_TX_OK;
2311 }
2312
2313 static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
2314                                            struct net_device *dev)
2315 {
2316         struct fe_priv *np = netdev_priv(dev);
2317         u32 tx_flags = 0;
2318         u32 tx_flags_extra;
2319         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2320         unsigned int i;
2321         u32 offset = 0;
2322         u32 bcnt;
2323         u32 size = skb_headlen(skb);
2324         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2325         u32 empty_slots;
2326         struct ring_desc_ex *put_tx;
2327         struct ring_desc_ex *start_tx;
2328         struct ring_desc_ex *prev_tx;
2329         struct nv_skb_map *prev_tx_ctx;
2330         struct nv_skb_map *start_tx_ctx;
2331         unsigned long flags;
2332
2333         /* add fragments to entries count */
2334         for (i = 0; i < fragments; i++) {
2335                 u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2336
2337                 entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2338                            ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2339         }
2340
2341         spin_lock_irqsave(&np->lock, flags);
2342         empty_slots = nv_get_empty_tx_slots(np);
2343         if (unlikely(empty_slots <= entries)) {
2344                 netif_stop_queue(dev);
2345                 np->tx_stop = 1;
2346                 spin_unlock_irqrestore(&np->lock, flags);
2347                 return NETDEV_TX_BUSY;
2348         }
2349         spin_unlock_irqrestore(&np->lock, flags);
2350
2351         start_tx = put_tx = np->put_tx.ex;
2352         start_tx_ctx = np->put_tx_ctx;
2353
2354         /* setup the header buffer */
2355         do {
2356                 prev_tx = put_tx;
2357                 prev_tx_ctx = np->put_tx_ctx;
2358                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2359                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2360                                                 PCI_DMA_TODEVICE);
2361                 if (pci_dma_mapping_error(np->pci_dev,
2362                                           np->put_tx_ctx->dma)) {
2363                         /* on DMA mapping error - drop the packet */
2364                         kfree_skb(skb);
2365                         u64_stats_update_begin(&np->swstats_tx_syncp);
2366                         np->stat_tx_dropped++;
2367                         u64_stats_update_end(&np->swstats_tx_syncp);
2368                         return NETDEV_TX_OK;
2369                 }
2370                 np->put_tx_ctx->dma_len = bcnt;
2371                 np->put_tx_ctx->dma_single = 1;
2372                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2373                 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2374                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2375
2376                 tx_flags = NV_TX2_VALID;
2377                 offset += bcnt;
2378                 size -= bcnt;
2379                 if (unlikely(put_tx++ == np->last_tx.ex))
2380                         put_tx = np->first_tx.ex;
2381                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2382                         np->put_tx_ctx = np->first_tx_ctx;
2383         } while (size);
2384
2385         /* setup the fragments */
2386         for (i = 0; i < fragments; i++) {
2387                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2388                 u32 frag_size = skb_frag_size(frag);
2389                 offset = 0;
2390
2391                 do {
2392                         prev_tx = put_tx;
2393                         prev_tx_ctx = np->put_tx_ctx;
2394                         bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2395                         np->put_tx_ctx->dma = skb_frag_dma_map(
2396                                                         &np->pci_dev->dev,
2397                                                         frag, offset,
2398                                                         bcnt,
2399                                                         DMA_TO_DEVICE);
2400                         np->put_tx_ctx->dma_len = bcnt;
2401                         np->put_tx_ctx->dma_single = 0;
2402                         put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2403                         put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2404                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2405
2406                         offset += bcnt;
2407                         frag_size -= bcnt;
2408                         if (unlikely(put_tx++ == np->last_tx.ex))
2409                                 put_tx = np->first_tx.ex;
2410                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2411                                 np->put_tx_ctx = np->first_tx_ctx;
2412                 } while (frag_size);
2413         }
2414
2415         /* set last fragment flag  */
2416         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2417
2418         /* save skb in this slot's context area */
2419         prev_tx_ctx->skb = skb;
2420
2421         if (skb_is_gso(skb))
2422                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2423         else
2424                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2425                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2426
2427         /* vlan tag */
2428         if (vlan_tx_tag_present(skb))
2429                 start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2430                                         vlan_tx_tag_get(skb));
2431         else
2432                 start_tx->txvlan = 0;
2433
2434         spin_lock_irqsave(&np->lock, flags);
2435
2436         if (np->tx_limit) {
2437                 /* Limit the number of outstanding tx. Setup all fragments, but
2438                  * do not set the VALID bit on the first descriptor. Save a pointer
2439                  * to that descriptor and also for next skb_map element.
2440                  */
2441
2442                 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2443                         if (!np->tx_change_owner)
2444                                 np->tx_change_owner = start_tx_ctx;
2445
2446                         /* remove VALID bit */
2447                         tx_flags &= ~NV_TX2_VALID;
2448                         start_tx_ctx->first_tx_desc = start_tx;
2449                         start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2450                         np->tx_end_flip = np->put_tx_ctx;
2451                 } else {
2452                         np->tx_pkts_in_progress++;
2453                 }
2454         }
2455
2456         /* set tx flags */
2457         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2458
2459         netdev_sent_queue(np->dev, skb->len);
2460
2461         skb_tx_timestamp(skb);
2462
2463         np->put_tx.ex = put_tx;
2464
2465         spin_unlock_irqrestore(&np->lock, flags);
2466
2467         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2468         return NETDEV_TX_OK;
2469 }
2470
2471 static inline void nv_tx_flip_ownership(struct net_device *dev)
2472 {
2473         struct fe_priv *np = netdev_priv(dev);
2474
2475         np->tx_pkts_in_progress--;
2476         if (np->tx_change_owner) {
2477                 np->tx_change_owner->first_tx_desc->flaglen |=
2478                         cpu_to_le32(NV_TX2_VALID);
2479                 np->tx_pkts_in_progress++;
2480
2481                 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2482                 if (np->tx_change_owner == np->tx_end_flip)
2483                         np->tx_change_owner = NULL;
2484
2485                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2486         }
2487 }
2488
2489 /*
2490  * nv_tx_done: check for completed packets, release the skbs.
2491  *
2492  * Caller must own np->lock.
2493  */
2494 static int nv_tx_done(struct net_device *dev, int limit)
2495 {
2496         struct fe_priv *np = netdev_priv(dev);
2497         u32 flags;
2498         int tx_work = 0;
2499         struct ring_desc *orig_get_tx = np->get_tx.orig;
2500         unsigned int bytes_compl = 0;
2501
2502         while ((np->get_tx.orig != np->put_tx.orig) &&
2503                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
2504                (tx_work < limit)) {
2505
2506                 nv_unmap_txskb(np, np->get_tx_ctx);
2507
2508                 if (np->desc_ver == DESC_VER_1) {
2509                         if (flags & NV_TX_LASTPACKET) {
2510                                 if (flags & NV_TX_ERROR) {
2511                                         if ((flags & NV_TX_RETRYERROR)
2512                                             && !(flags & NV_TX_RETRYCOUNT_MASK))
2513                                                 nv_legacybackoff_reseed(dev);
2514                                 } else {
2515                                         u64_stats_update_begin(&np->swstats_tx_syncp);
2516                                         np->stat_tx_packets++;
2517                                         np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2518                                         u64_stats_update_end(&np->swstats_tx_syncp);
2519                                 }
2520                                 bytes_compl += np->get_tx_ctx->skb->len;
2521                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2522                                 np->get_tx_ctx->skb = NULL;
2523                                 tx_work++;
2524                         }
2525                 } else {
2526                         if (flags & NV_TX2_LASTPACKET) {
2527                                 if (flags & NV_TX2_ERROR) {
2528                                         if ((flags & NV_TX2_RETRYERROR)
2529                                             && !(flags & NV_TX2_RETRYCOUNT_MASK))
2530                                                 nv_legacybackoff_reseed(dev);
2531                                 } else {
2532                                         u64_stats_update_begin(&np->swstats_tx_syncp);
2533                                         np->stat_tx_packets++;
2534                                         np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2535                                         u64_stats_update_end(&np->swstats_tx_syncp);
2536                                 }
2537                                 bytes_compl += np->get_tx_ctx->skb->len;
2538                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2539                                 np->get_tx_ctx->skb = NULL;
2540                                 tx_work++;
2541                         }
2542                 }
2543                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2544                         np->get_tx.orig = np->first_tx.orig;
2545                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2546                         np->get_tx_ctx = np->first_tx_ctx;
2547         }
2548
2549         netdev_completed_queue(np->dev, tx_work, bytes_compl);
2550
2551         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2552                 np->tx_stop = 0;
2553                 netif_wake_queue(dev);
2554         }
2555         return tx_work;
2556 }
2557
2558 static int nv_tx_done_optimized(struct net_device *dev, int limit)
2559 {
2560         struct fe_priv *np = netdev_priv(dev);
2561         u32 flags;
2562         int tx_work = 0;
2563         struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
2564         unsigned long bytes_cleaned = 0;
2565
2566         while ((np->get_tx.ex != np->put_tx.ex) &&
2567                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
2568                (tx_work < limit)) {
2569
2570                 nv_unmap_txskb(np, np->get_tx_ctx);
2571
2572                 if (flags & NV_TX2_LASTPACKET) {
2573                         if (flags & NV_TX2_ERROR) {
2574                                 if ((flags & NV_TX2_RETRYERROR)
2575                                     && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2576                                         if (np->driver_data & DEV_HAS_GEAR_MODE)
2577                                                 nv_gear_backoff_reseed(dev);
2578                                         else
2579                                                 nv_legacybackoff_reseed(dev);
2580                                 }
2581                         } else {
2582                                 u64_stats_update_begin(&np->swstats_tx_syncp);
2583                                 np->stat_tx_packets++;
2584                                 np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2585                                 u64_stats_update_end(&np->swstats_tx_syncp);
2586                         }
2587
2588                         bytes_cleaned += np->get_tx_ctx->skb->len;
2589                         dev_kfree_skb_any(np->get_tx_ctx->skb);
2590                         np->get_tx_ctx->skb = NULL;
2591                         tx_work++;
2592
2593                         if (np->tx_limit)
2594                                 nv_tx_flip_ownership(dev);
2595                 }
2596
2597                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2598                         np->get_tx.ex = np->first_tx.ex;
2599                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2600                         np->get_tx_ctx = np->first_tx_ctx;
2601         }
2602
2603         netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
2604
2605         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2606                 np->tx_stop = 0;
2607                 netif_wake_queue(dev);
2608         }
2609         return tx_work;
2610 }
2611
2612 /*
2613  * nv_tx_timeout: dev->tx_timeout function
2614  * Called with netif_tx_lock held.
2615  */
2616 static void nv_tx_timeout(struct net_device *dev)
2617 {
2618         struct fe_priv *np = netdev_priv(dev);
2619         u8 __iomem *base = get_hwbase(dev);
2620         u32 status;
2621         union ring_type put_tx;
2622         int saved_tx_limit;
2623
2624         if (np->msi_flags & NV_MSI_X_ENABLED)
2625                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2626         else
2627                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2628
2629         netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
2630
2631         if (unlikely(debug_tx_timeout)) {
2632                 int i;
2633
2634                 netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
2635                 netdev_info(dev, "Dumping tx registers\n");
2636                 for (i = 0; i <= np->register_size; i += 32) {
2637                         netdev_info(dev,
2638                                     "%3x: %08x %08x %08x %08x "
2639                                     "%08x %08x %08x %08x\n",
2640                                     i,
2641                                     readl(base + i + 0), readl(base + i + 4),
2642                                     readl(base + i + 8), readl(base + i + 12),
2643                                     readl(base + i + 16), readl(base + i + 20),
2644                                     readl(base + i + 24), readl(base + i + 28));
2645                 }
2646                 netdev_info(dev, "Dumping tx ring\n");
2647                 for (i = 0; i < np->tx_ring_size; i += 4) {
2648                         if (!nv_optimized(np)) {
2649                                 netdev_info(dev,
2650                                             "%03x: %08x %08x // %08x %08x "
2651                                             "// %08x %08x // %08x %08x\n",
2652                                             i,
2653                                             le32_to_cpu(np->tx_ring.orig[i].buf),
2654                                             le32_to_cpu(np->tx_ring.orig[i].flaglen),
2655                                             le32_to_cpu(np->tx_ring.orig[i+1].buf),
2656                                             le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2657                                             le32_to_cpu(np->tx_ring.orig[i+2].buf),
2658                                             le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2659                                             le32_to_cpu(np->tx_ring.orig[i+3].buf),
2660                                             le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2661                         } else {
2662                                 netdev_info(dev,
2663                                             "%03x: %08x %08x %08x "
2664                                             "// %08x %08x %08x "
2665                                             "// %08x %08x %08x "
2666                                             "// %08x %08x %08x\n",
2667                                             i,
2668                                             le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2669                                             le32_to_cpu(np->tx_ring.ex[i].buflow),
2670                                             le32_to_cpu(np->tx_ring.ex[i].flaglen),
2671                                             le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2672                                             le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2673                                             le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2674                                             le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2675                                             le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2676                                             le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2677                                             le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2678                                             le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2679                                             le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2680                         }
2681                 }
2682         }
2683
2684         spin_lock_irq(&np->lock);
2685
2686         /* 1) stop tx engine */
2687         nv_stop_tx(dev);
2688
2689         /* 2) complete any outstanding tx and do not give HW any limited tx pkts */
2690         saved_tx_limit = np->tx_limit;
2691         np->tx_limit = 0; /* prevent giving HW any limited pkts */
2692         np->tx_stop = 0;  /* prevent waking tx queue */
2693         if (!nv_optimized(np))
2694                 nv_tx_done(dev, np->tx_ring_size);
2695         else
2696                 nv_tx_done_optimized(dev, np->tx_ring_size);
2697
2698         /* save current HW position */
2699         if (np->tx_change_owner)
2700                 put_tx.ex = np->tx_change_owner->first_tx_desc;
2701         else
2702                 put_tx = np->put_tx;
2703
2704         /* 3) clear all tx state */
2705         nv_drain_tx(dev);
2706         nv_init_tx(dev);
2707
2708         /* 4) restore state to current HW position */
2709         np->get_tx = np->put_tx = put_tx;
2710         np->tx_limit = saved_tx_limit;
2711
2712         /* 5) restart tx engine */
2713         nv_start_tx(dev);
2714         netif_wake_queue(dev);
2715         spin_unlock_irq(&np->lock);
2716 }
2717
2718 /*
2719  * Called when the nic notices a mismatch between the actual data len on the
2720  * wire and the len indicated in the 802 header
2721  */
2722 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2723 {
2724         int hdrlen;     /* length of the 802 header */
2725         int protolen;   /* length as stored in the proto field */
2726
2727         /* 1) calculate len according to header */
2728         if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2729                 protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
2730                 hdrlen = VLAN_HLEN;
2731         } else {
2732                 protolen = ntohs(((struct ethhdr *)packet)->h_proto);
2733                 hdrlen = ETH_HLEN;
2734         }
2735         if (protolen > ETH_DATA_LEN)
2736                 return datalen; /* Value in proto field not a len, no checks possible */
2737
2738         protolen += hdrlen;
2739         /* consistency checks: */
2740         if (datalen > ETH_ZLEN) {
2741                 if (datalen >= protolen) {
2742                         /* more data on wire than in 802 header, trim of
2743                          * additional data.
2744                          */
2745                         return protolen;
2746                 } else {
2747                         /* less data on wire than mentioned in header.
2748                          * Discard the packet.
2749                          */
2750                         return -1;
2751                 }
2752         } else {
2753                 /* short packet. Accept only if 802 values are also short */
2754                 if (protolen > ETH_ZLEN) {
2755                         return -1;
2756                 }
2757                 return datalen;
2758         }
2759 }
2760
2761 static int nv_rx_process(struct net_device *dev, int limit)
2762 {
2763         struct fe_priv *np = netdev_priv(dev);
2764         u32 flags;
2765         int rx_work = 0;
2766         struct sk_buff *skb;
2767         int len;
2768
2769         while ((np->get_rx.orig != np->put_rx.orig) &&
2770               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2771                 (rx_work < limit)) {
2772
2773                 /*
2774                  * the packet is for us - immediately tear down the pci mapping.
2775                  * TODO: check if a prefetch of the first cacheline improves
2776                  * the performance.
2777                  */
2778                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2779                                 np->get_rx_ctx->dma_len,
2780                                 PCI_DMA_FROMDEVICE);
2781                 skb = np->get_rx_ctx->skb;
2782                 np->get_rx_ctx->skb = NULL;
2783
2784                 /* look at what we actually got: */
2785                 if (np->desc_ver == DESC_VER_1) {
2786                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2787                                 len = flags & LEN_MASK_V1;
2788                                 if (unlikely(flags & NV_RX_ERROR)) {
2789                                         if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
2790                                                 len = nv_getlen(dev, skb->data, len);
2791                                                 if (len < 0) {
2792                                                         dev_kfree_skb(skb);
2793                                                         goto next_pkt;
2794                                                 }
2795                                         }
2796                                         /* framing errors are soft errors */
2797                                         else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
2798                                                 if (flags & NV_RX_SUBSTRACT1)
2799                                                         len--;
2800                                         }
2801                                         /* the rest are hard errors */
2802                                         else {
2803                                                 if (flags & NV_RX_MISSEDFRAME) {
2804                                                         u64_stats_update_begin(&np->swstats_rx_syncp);
2805                                                         np->stat_rx_missed_errors++;
2806                                                         u64_stats_update_end(&np->swstats_rx_syncp);
2807                                                 }
2808                                                 dev_kfree_skb(skb);
2809                                                 goto next_pkt;
2810                                         }
2811                                 }
2812                         } else {
2813                                 dev_kfree_skb(skb);
2814                                 goto next_pkt;
2815                         }
2816                 } else {
2817                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2818                                 len = flags & LEN_MASK_V2;
2819                                 if (unlikely(flags & NV_RX2_ERROR)) {
2820                                         if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2821                                                 len = nv_getlen(dev, skb->data, len);
2822                                                 if (len < 0) {
2823                                                         dev_kfree_skb(skb);
2824                                                         goto next_pkt;
2825                                                 }
2826                                         }
2827                                         /* framing errors are soft errors */
2828                                         else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2829                                                 if (flags & NV_RX2_SUBSTRACT1)
2830                                                         len--;
2831                                         }
2832                                         /* the rest are hard errors */
2833                                         else {
2834                                                 dev_kfree_skb(skb);
2835                                                 goto next_pkt;
2836                                         }
2837                                 }
2838                                 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2839                                     ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2840                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2841                         } else {
2842                                 dev_kfree_skb(skb);
2843                                 goto next_pkt;
2844                         }
2845                 }
2846                 /* got a valid packet - forward it to the network core */
2847                 skb_put(skb, len);
2848                 skb->protocol = eth_type_trans(skb, dev);
2849                 napi_gro_receive(&np->napi, skb);
2850                 u64_stats_update_begin(&np->swstats_rx_syncp);
2851                 np->stat_rx_packets++;
2852                 np->stat_rx_bytes += len;
2853                 u64_stats_update_end(&np->swstats_rx_syncp);
2854 next_pkt:
2855                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2856                         np->get_rx.orig = np->first_rx.orig;
2857                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2858                         np->get_rx_ctx = np->first_rx_ctx;
2859
2860                 rx_work++;
2861         }
2862
2863         return rx_work;
2864 }
2865
2866 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2867 {
2868         struct fe_priv *np = netdev_priv(dev);
2869         u32 flags;
2870         u32 vlanflags = 0;
2871         int rx_work = 0;
2872         struct sk_buff *skb;
2873         int len;
2874
2875         while ((np->get_rx.ex != np->put_rx.ex) &&
2876               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2877               (rx_work < limit)) {
2878
2879                 /*
2880                  * the packet is for us - immediately tear down the pci mapping.
2881                  * TODO: check if a prefetch of the first cacheline improves
2882                  * the performance.
2883                  */
2884                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2885                                 np->get_rx_ctx->dma_len,
2886                                 PCI_DMA_FROMDEVICE);
2887                 skb = np->get_rx_ctx->skb;
2888                 np->get_rx_ctx->skb = NULL;
2889
2890                 /* look at what we actually got: */
2891                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2892                         len = flags & LEN_MASK_V2;
2893                         if (unlikely(flags & NV_RX2_ERROR)) {
2894                                 if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2895                                         len = nv_getlen(dev, skb->data, len);
2896                                         if (len < 0) {
2897                                                 dev_kfree_skb(skb);
2898                                                 goto next_pkt;
2899                                         }
2900                                 }
2901                                 /* framing errors are soft errors */
2902                                 else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2903                                         if (flags & NV_RX2_SUBSTRACT1)
2904                                                 len--;
2905                                 }
2906                                 /* the rest are hard errors */
2907                                 else {
2908                                         dev_kfree_skb(skb);
2909                                         goto next_pkt;
2910                                 }
2911                         }
2912
2913                         if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2914                             ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2915                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2916
2917                         /* got a valid packet - forward it to the network core */
2918                         skb_put(skb, len);
2919                         skb->protocol = eth_type_trans(skb, dev);
2920                         prefetch(skb->data);
2921
2922                         vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2923
2924                         /*
2925                          * There's need to check for NETIF_F_HW_VLAN_RX here.
2926                          * Even if vlan rx accel is disabled,
2927                          * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
2928                          */
2929                         if (dev->features & NETIF_F_HW_VLAN_RX &&
2930                             vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2931                                 u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
2932
2933                                 __vlan_hwaccel_put_tag(skb, vid);
2934                         }
2935                         napi_gro_receive(&np->napi, skb);
2936                         u64_stats_update_begin(&np->swstats_rx_syncp);
2937                         np->stat_rx_packets++;
2938                         np->stat_rx_bytes += len;
2939                         u64_stats_update_end(&np->swstats_rx_syncp);
2940                 } else {
2941                         dev_kfree_skb(skb);
2942                 }
2943 next_pkt:
2944                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2945                         np->get_rx.ex = np->first_rx.ex;
2946                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2947                         np->get_rx_ctx = np->first_rx_ctx;
2948
2949                 rx_work++;
2950         }
2951
2952         return rx_work;
2953 }
2954
2955 static void set_bufsize(struct net_device *dev)
2956 {
2957         struct fe_priv *np = netdev_priv(dev);
2958
2959         if (dev->mtu <= ETH_DATA_LEN)
2960                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2961         else
2962                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2963 }
2964
2965 /*
2966  * nv_change_mtu: dev->change_mtu function
2967  * Called with dev_base_lock held for read.
2968  */
2969 static int nv_change_mtu(struct net_device *dev, int new_mtu)
2970 {
2971         struct fe_priv *np = netdev_priv(dev);
2972         int old_mtu;
2973
2974         if (new_mtu < 64 || new_mtu > np->pkt_limit)
2975                 return -EINVAL;
2976
2977         old_mtu = dev->mtu;
2978         dev->mtu = new_mtu;
2979
2980         /* return early if the buffer sizes will not change */
2981         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2982                 return 0;
2983         if (old_mtu == new_mtu)
2984                 return 0;
2985
2986         /* synchronized against open : rtnl_lock() held by caller */
2987         if (netif_running(dev)) {
2988                 u8 __iomem *base = get_hwbase(dev);
2989                 /*
2990                  * It seems that the nic preloads valid ring entries into an
2991                  * internal buffer. The procedure for flushing everything is
2992                  * guessed, there is probably a simpler approach.
2993                  * Changing the MTU is a rare event, it shouldn't matter.
2994                  */
2995                 nv_disable_irq(dev);
2996                 nv_napi_disable(dev);
2997                 netif_tx_lock_bh(dev);
2998                 netif_addr_lock(dev);
2999                 spin_lock(&np->lock);
3000                 /* stop engines */
3001                 nv_stop_rxtx(dev);
3002                 nv_txrx_reset(dev);
3003                 /* drain rx queue */
3004                 nv_drain_rxtx(dev);
3005                 /* reinit driver view of the rx queue */
3006                 set_bufsize(dev);
3007                 if (nv_init_ring(dev)) {
3008                         if (!np->in_shutdown)
3009                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3010                 }
3011                 /* reinit nic view of the rx queue */
3012                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3013                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3014                 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3015                         base + NvRegRingSizes);
3016                 pci_push(base);
3017                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3018                 pci_push(base);
3019
3020                 /* restart rx engine */
3021                 nv_start_rxtx(dev);
3022                 spin_unlock(&np->lock);
3023                 netif_addr_unlock(dev);
3024                 netif_tx_unlock_bh(dev);
3025                 nv_napi_enable(dev);
3026                 nv_enable_irq(dev);
3027         }
3028         return 0;
3029 }
3030
3031 static void nv_copy_mac_to_hw(struct net_device *dev)
3032 {
3033         u8 __iomem *base = get_hwbase(dev);
3034         u32 mac[2];
3035
3036         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3037                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3038         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3039
3040         writel(mac[0], base + NvRegMacAddrA);
3041         writel(mac[1], base + NvRegMacAddrB);
3042 }
3043
3044 /*
3045  * nv_set_mac_address: dev->set_mac_address function
3046  * Called with rtnl_lock() held.
3047  */
3048 static int nv_set_mac_address(struct net_device *dev, void *addr)
3049 {
3050         struct fe_priv *np = netdev_priv(dev);
3051         struct sockaddr *macaddr = (struct sockaddr *)addr;
3052
3053         if (!is_valid_ether_addr(macaddr->sa_data))
3054                 return -EADDRNOTAVAIL;
3055
3056         /* synchronized against open : rtnl_lock() held by caller */
3057         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
3058
3059         if (netif_running(dev)) {
3060                 netif_tx_lock_bh(dev);
3061                 netif_addr_lock(dev);
3062                 spin_lock_irq(&np->lock);
3063
3064                 /* stop rx engine */
3065                 nv_stop_rx(dev);
3066
3067                 /* set mac address */
3068                 nv_copy_mac_to_hw(dev);
3069
3070                 /* restart rx engine */
3071                 nv_start_rx(dev);
3072                 spin_unlock_irq(&np->lock);
3073                 netif_addr_unlock(dev);
3074                 netif_tx_unlock_bh(dev);
3075         } else {
3076                 nv_copy_mac_to_hw(dev);
3077         }
3078         return 0;
3079 }
3080
3081 /*
3082  * nv_set_multicast: dev->set_multicast function
3083  * Called with netif_tx_lock held.
3084  */
3085 static void nv_set_multicast(struct net_device *dev)
3086 {
3087         struct fe_priv *np = netdev_priv(dev);
3088         u8 __iomem *base = get_hwbase(dev);
3089         u32 addr[2];
3090         u32 mask[2];
3091         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3092
3093         memset(addr, 0, sizeof(addr));
3094         memset(mask, 0, sizeof(mask));
3095
3096         if (dev->flags & IFF_PROMISC) {
3097                 pff |= NVREG_PFF_PROMISC;
3098         } else {
3099                 pff |= NVREG_PFF_MYADDR;
3100
3101                 if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3102                         u32 alwaysOff[2];
3103                         u32 alwaysOn[2];
3104
3105                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3106                         if (dev->flags & IFF_ALLMULTI) {
3107                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3108                         } else {
3109                                 struct netdev_hw_addr *ha;
3110
3111                                 netdev_for_each_mc_addr(ha, dev) {
3112                                         unsigned char *hw_addr = ha->addr;
3113                                         u32 a, b;
3114
3115                                         a = le32_to_cpu(*(__le32 *) hw_addr);
3116                                         b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3117                                         alwaysOn[0] &= a;
3118                                         alwaysOff[0] &= ~a;
3119                                         alwaysOn[1] &= b;
3120                                         alwaysOff[1] &= ~b;
3121                                 }
3122                         }
3123                         addr[0] = alwaysOn[0];
3124                         addr[1] = alwaysOn[1];
3125                         mask[0] = alwaysOn[0] | alwaysOff[0];
3126                         mask[1] = alwaysOn[1] | alwaysOff[1];
3127                 } else {
3128                         mask[0] = NVREG_MCASTMASKA_NONE;
3129                         mask[1] = NVREG_MCASTMASKB_NONE;
3130                 }
3131         }
3132         addr[0] |= NVREG_MCASTADDRA_FORCE;
3133         pff |= NVREG_PFF_ALWAYS;
3134         spin_lock_irq(&np->lock);
3135         nv_stop_rx(dev);
3136         writel(addr[0], base + NvRegMulticastAddrA);
3137         writel(addr[1], base + NvRegMulticastAddrB);
3138         writel(mask[0], base + NvRegMulticastMaskA);
3139         writel(mask[1], base + NvRegMulticastMaskB);
3140         writel(pff, base + NvRegPacketFilterFlags);
3141         nv_start_rx(dev);
3142         spin_unlock_irq(&np->lock);
3143 }
3144
3145 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3146 {
3147         struct fe_priv *np = netdev_priv(dev);
3148         u8 __iomem *base = get_hwbase(dev);
3149
3150         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3151
3152         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3153                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3154                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3155                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3156                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3157                 } else {
3158                         writel(pff, base + NvRegPacketFilterFlags);
3159                 }
3160         }
3161         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3162                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3163                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3164                         u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3165                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3166                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3167                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3168                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3169                                 /* limit the number of tx pause frames to a default of 8 */
3170                                 writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3171                         }
3172                         writel(pause_enable,  base + NvRegTxPauseFrame);
3173                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3174                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3175                 } else {
3176                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3177                         writel(regmisc, base + NvRegMisc1);
3178                 }
3179         }
3180 }
3181
3182 static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3183 {
3184         struct fe_priv *np = netdev_priv(dev);
3185         u8 __iomem *base = get_hwbase(dev);
3186         u32 phyreg, txreg;
3187         int mii_status;
3188
3189         np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3190         np->duplex = duplex;
3191
3192         /* see if gigabit phy */
3193         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3194         if (mii_status & PHY_GIGABIT) {
3195                 np->gigabit = PHY_GIGABIT;
3196                 phyreg = readl(base + NvRegSlotTime);
3197                 phyreg &= ~(0x3FF00);
3198                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3199                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3200                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3201                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3202                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3203                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3204                 writel(phyreg, base + NvRegSlotTime);
3205         }
3206
3207         phyreg = readl(base + NvRegPhyInterface);
3208         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3209         if (np->duplex == 0)
3210                 phyreg |= PHY_HALF;
3211         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3212                 phyreg |= PHY_100;
3213         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3214                                                         NVREG_LINKSPEED_1000)
3215                 phyreg |= PHY_1000;
3216         writel(phyreg, base + NvRegPhyInterface);
3217
3218         if (phyreg & PHY_RGMII) {
3219                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3220                                                         NVREG_LINKSPEED_1000)
3221                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3222                 else
3223                         txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3224         } else {
3225                 txreg = NVREG_TX_DEFERRAL_DEFAULT;
3226         }
3227         writel(txreg, base + NvRegTxDeferral);
3228
3229         if (np->desc_ver == DESC_VER_1) {
3230                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3231         } else {
3232                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3233                                          NVREG_LINKSPEED_1000)
3234                         txreg = NVREG_TX_WM_DESC2_3_1000;
3235                 else
3236                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3237         }
3238         writel(txreg, base + NvRegTxWatermark);
3239
3240         writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3241                         base + NvRegMisc1);
3242         pci_push(base);
3243         writel(np->linkspeed, base + NvRegLinkSpeed);
3244         pci_push(base);
3245
3246         return;
3247 }
3248
3249 /**
3250  * nv_update_linkspeed - Setup the MAC according to the link partner
3251  * @dev: Network device to be configured
3252  *
3253  * The function queries the PHY and checks if there is a link partner.
3254  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3255  * set to 10 MBit HD.
3256  *
3257  * The function returns 0 if there is no link partner and 1 if there is
3258  * a good link partner.
3259  */
3260 static int nv_update_linkspeed(struct net_device *dev)
3261 {
3262         struct fe_priv *np = netdev_priv(dev);
3263         u8 __iomem *base = get_hwbase(dev);
3264         int adv = 0;
3265         int lpa = 0;
3266         int adv_lpa, adv_pause, lpa_pause;
3267         int newls = np->linkspeed;
3268         int newdup = np->duplex;
3269         int mii_status;
3270         u32 bmcr;
3271         int retval = 0;
3272         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3273         u32 txrxFlags = 0;
3274         u32 phy_exp;
3275
3276         /* If device loopback is enabled, set carrier on and enable max link
3277          * speed.
3278          */
3279         bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3280         if (bmcr & BMCR_LOOPBACK) {
3281                 if (netif_running(dev)) {
3282                         nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3283                         if (!netif_carrier_ok(dev))
3284                                 netif_carrier_on(dev);
3285                 }
3286                 return 1;
3287         }
3288
3289         /* BMSR_LSTATUS is latched, read it twice:
3290          * we want the current value.
3291          */
3292         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3293         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3294
3295         if (!(mii_status & BMSR_LSTATUS)) {
3296                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3297                 newdup = 0;
3298                 retval = 0;
3299                 goto set_speed;
3300         }
3301
3302         if (np->autoneg == 0) {
3303                 if (np->fixed_mode & LPA_100FULL) {
3304                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3305                         newdup = 1;
3306                 } else if (np->fixed_mode & LPA_100HALF) {
3307                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3308                         newdup = 0;
3309                 } else if (np->fixed_mode & LPA_10FULL) {
3310                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3311                         newdup = 1;
3312                 } else {
3313                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3314                         newdup = 0;
3315                 }
3316                 retval = 1;
3317                 goto set_speed;
3318         }
3319         /* check auto negotiation is complete */
3320         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3321                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3322                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3323                 newdup = 0;
3324                 retval = 0;
3325                 goto set_speed;
3326         }
3327
3328         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3329         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3330
3331         retval = 1;
3332         if (np->gigabit == PHY_GIGABIT) {
3333                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3334                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3335
3336                 if ((control_1000 & ADVERTISE_1000FULL) &&
3337                         (status_1000 & LPA_1000FULL)) {
3338                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3339                         newdup = 1;
3340                         goto set_speed;
3341                 }
3342         }
3343
3344         /* FIXME: handle parallel detection properly */
3345         adv_lpa = lpa & adv;
3346         if (adv_lpa & LPA_100FULL) {
3347                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3348                 newdup = 1;
3349         } else if (adv_lpa & LPA_100HALF) {
3350                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3351                 newdup = 0;
3352         } else if (adv_lpa & LPA_10FULL) {
3353                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3354                 newdup = 1;
3355         } else if (adv_lpa & LPA_10HALF) {
3356                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3357                 newdup = 0;
3358         } else {
3359                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3360                 newdup = 0;
3361         }
3362
3363 set_speed:
3364         if (np->duplex == newdup && np->linkspeed == newls)
3365                 return retval;
3366
3367         np->duplex = newdup;
3368         np->linkspeed = newls;
3369
3370         /* The transmitter and receiver must be restarted for safe update */
3371         if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3372                 txrxFlags |= NV_RESTART_TX;
3373                 nv_stop_tx(dev);
3374         }
3375         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3376                 txrxFlags |= NV_RESTART_RX;
3377                 nv_stop_rx(dev);
3378         }
3379
3380         if (np->gigabit == PHY_GIGABIT) {
3381                 phyreg = readl(base + NvRegSlotTime);
3382                 phyreg &= ~(0x3FF00);
3383                 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3384                     ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3385                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3386                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3387                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3388                 writel(phyreg, base + NvRegSlotTime);
3389         }
3390
3391         phyreg = readl(base + NvRegPhyInterface);
3392         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3393         if (np->duplex == 0)
3394                 phyreg |= PHY_HALF;
3395         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3396                 phyreg |= PHY_100;
3397         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3398                 phyreg |= PHY_1000;
3399         writel(phyreg, base + NvRegPhyInterface);
3400
3401         phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3402         if (phyreg & PHY_RGMII) {
3403                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3404                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3405                 } else {
3406                         if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3407                                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3408                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3409                                 else
3410                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3411                         } else {
3412                                 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3413                         }
3414                 }
3415         } else {
3416                 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3417                         txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3418                 else
3419                         txreg = NVREG_TX_DEFERRAL_DEFAULT;
3420         }
3421         writel(txreg, base + NvRegTxDeferral);
3422
3423         if (np->desc_ver == DESC_VER_1) {
3424                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3425         } else {
3426                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3427                         txreg = NVREG_TX_WM_DESC2_3_1000;
3428                 else
3429                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3430         }
3431         writel(txreg, base + NvRegTxWatermark);
3432
3433         writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3434                 base + NvRegMisc1);
3435         pci_push(base);
3436         writel(np->linkspeed, base + NvRegLinkSpeed);
3437         pci_push(base);
3438
3439         pause_flags = 0;
3440         /* setup pause frame */
3441         if (netif_running(dev) && (np->duplex != 0)) {
3442                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3443                         adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3444                         lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3445
3446                         switch (adv_pause) {
3447                         case ADVERTISE_PAUSE_CAP:
3448                                 if (lpa_pause & LPA_PAUSE_CAP) {
3449                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3450                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3451                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3452                                 }
3453                                 break;
3454                         case ADVERTISE_PAUSE_ASYM:
3455                                 if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3456                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3457                                 break;
3458                         case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3459                                 if (lpa_pause & LPA_PAUSE_CAP) {
3460                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3461                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3462                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3463                                 }
3464                                 if (lpa_pause == LPA_PAUSE_ASYM)
3465                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3466                                 break;
3467                         }
3468                 } else {
3469                         pause_flags = np->pause_flags;
3470                 }
3471         }
3472         nv_update_pause(dev, pause_flags);
3473
3474         if (txrxFlags & NV_RESTART_TX)
3475                 nv_start_tx(dev);
3476         if (txrxFlags & NV_RESTART_RX)
3477                 nv_start_rx(dev);
3478
3479         return retval;
3480 }
3481
3482 static void nv_linkchange(struct net_device *dev)
3483 {
3484         if (nv_update_linkspeed(dev)) {
3485                 if (!netif_carrier_ok(dev)) {
3486                         netif_carrier_on(dev);
3487                         netdev_info(dev, "link up\n");
3488                         nv_txrx_gate(dev, false);
3489                         nv_start_rx(dev);
3490                 }
3491         } else {
3492                 if (netif_carrier_ok(dev)) {
3493                         netif_carrier_off(dev);
3494                         netdev_info(dev, "link down\n");
3495                         nv_txrx_gate(dev, true);
3496                         nv_stop_rx(dev);
3497                 }
3498         }
3499 }
3500
3501 static void nv_link_irq(struct net_device *dev)
3502 {
3503         u8 __iomem *base = get_hwbase(dev);
3504         u32 miistat;
3505
3506         miistat = readl(base + NvRegMIIStatus);
3507         writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3508
3509         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3510                 nv_linkchange(dev);
3511 }
3512
3513 static void nv_msi_workaround(struct fe_priv *np)
3514 {
3515
3516         /* Need to toggle the msi irq mask within the ethernet device,
3517          * otherwise, future interrupts will not be detected.
3518          */
3519         if (np->msi_flags & NV_MSI_ENABLED) {
3520                 u8 __iomem *base = np->base;
3521
3522                 writel(0, base + NvRegMSIIrqMask);
3523                 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3524         }
3525 }
3526
3527 static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3528 {
3529         struct fe_priv *np = netdev_priv(dev);
3530
3531         if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3532                 if (total_work > NV_DYNAMIC_THRESHOLD) {
3533                         /* transition to poll based interrupts */
3534                         np->quiet_count = 0;
3535                         if (np->irqmask != NVREG_IRQMASK_CPU) {
3536                                 np->irqmask = NVREG_IRQMASK_CPU;
3537                                 return 1;
3538                         }
3539                 } else {
3540                         if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3541                                 np->quiet_count++;
3542                         } else {
3543                                 /* reached a period of low activity, switch
3544                                    to per tx/rx packet interrupts */
3545                                 if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3546                                         np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3547                                         return 1;
3548                                 }
3549                         }
3550                 }
3551         }
3552         return 0;
3553 }
3554
3555 static irqreturn_t nv_nic_irq(int foo, void *data)
3556 {
3557         struct net_device *dev = (struct net_device *) data;
3558         struct fe_priv *np = netdev_priv(dev);
3559         u8 __iomem *base = get_hwbase(dev);
3560
3561         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3562                 np->events = readl(base + NvRegIrqStatus);
3563                 writel(np->events, base + NvRegIrqStatus);
3564         } else {
3565                 np->events = readl(base + NvRegMSIXIrqStatus);
3566                 writel(np->events, base + NvRegMSIXIrqStatus);
3567         }
3568         if (!(np->events & np->irqmask))
3569                 return IRQ_NONE;
3570
3571         nv_msi_workaround(np);
3572
3573         if (napi_schedule_prep(&np->napi)) {
3574                 /*
3575                  * Disable further irq's (msix not enabled with napi)
3576                  */
3577                 writel(0, base + NvRegIrqMask);
3578                 __napi_schedule(&np->napi);
3579         }
3580
3581         return IRQ_HANDLED;
3582 }
3583
3584 /* All _optimized functions are used to help increase performance
3585  * (reduce CPU and increase throughput). They use descripter version 3,
3586  * compiler directives, and reduce memory accesses.
3587  */
3588 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3589 {
3590         struct net_device *dev = (struct net_device *) data;
3591         struct fe_priv *np = netdev_priv(dev);
3592         u8 __iomem *base = get_hwbase(dev);
3593
3594         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3595                 np->events = readl(base + NvRegIrqStatus);
3596                 writel(np->events, base + NvRegIrqStatus);
3597         } else {
3598                 np->events = readl(base + NvRegMSIXIrqStatus);
3599                 writel(np->events, base + NvRegMSIXIrqStatus);
3600         }
3601         if (!(np->events & np->irqmask))
3602                 return IRQ_NONE;
3603
3604         nv_msi_workaround(np);
3605
3606         if (napi_schedule_prep(&np->napi)) {
3607                 /*
3608                  * Disable further irq's (msix not enabled with napi)
3609                  */
3610                 writel(0, base + NvRegIrqMask);
3611                 __napi_schedule(&np->napi);
3612         }
3613
3614         return IRQ_HANDLED;
3615 }
3616
3617 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3618 {
3619         struct net_device *dev = (struct net_device *) data;
3620         struct fe_priv *np = netdev_priv(dev);
3621         u8 __iomem *base = get_hwbase(dev);
3622         u32 events;
3623         int i;
3624         unsigned long flags;
3625
3626         for (i = 0;; i++) {
3627                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3628                 writel(events, base + NvRegMSIXIrqStatus);
3629                 netdev_dbg(dev, "tx irq events: %08x\n", events);
3630                 if (!(events & np->irqmask))
3631                         break;
3632
3633                 spin_lock_irqsave(&np->lock, flags);
3634                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3635                 spin_unlock_irqrestore(&np->lock, flags);
3636
3637                 if (unlikely(i > max_interrupt_work)) {
3638                         spin_lock_irqsave(&np->lock, flags);
3639                         /* disable interrupts on the nic */
3640                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3641                         pci_push(base);
3642
3643                         if (!np->in_shutdown) {
3644                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3645                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3646                         }
3647                         spin_unlock_irqrestore(&np->lock, flags);
3648                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3649                                    __func__, i);
3650                         break;
3651                 }
3652
3653         }
3654
3655         return IRQ_RETVAL(i);
3656 }
3657
3658 static int nv_napi_poll(struct napi_struct *napi, int budget)
3659 {
3660         struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3661         struct net_device *dev = np->dev;
3662         u8 __iomem *base = get_hwbase(dev);
3663         unsigned long flags;
3664         int retcode;
3665         int rx_count, tx_work = 0, rx_work = 0;
3666
3667         do {
3668                 if (!nv_optimized(np)) {
3669                         spin_lock_irqsave(&np->lock, flags);
3670                         tx_work += nv_tx_done(dev, np->tx_ring_size);
3671                         spin_unlock_irqrestore(&np->lock, flags);
3672
3673                         rx_count = nv_rx_process(dev, budget - rx_work);
3674                         retcode = nv_alloc_rx(dev);
3675                 } else {
3676                         spin_lock_irqsave(&np->lock, flags);
3677                         tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3678                         spin_unlock_irqrestore(&np->lock, flags);
3679
3680                         rx_count = nv_rx_process_optimized(dev,
3681                             budget - rx_work);
3682                         retcode = nv_alloc_rx_optimized(dev);
3683                 }
3684         } while (retcode == 0 &&
3685                  rx_count > 0 && (rx_work += rx_count) < budget);
3686
3687         if (retcode) {
3688                 spin_lock_irqsave(&np->lock, flags);
3689                 if (!np->in_shutdown)
3690                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3691                 spin_unlock_irqrestore(&np->lock, flags);
3692         }
3693
3694         nv_change_interrupt_mode(dev, tx_work + rx_work);
3695
3696         if (unlikely(np->events & NVREG_IRQ_LINK)) {
3697                 spin_lock_irqsave(&np->lock, flags);
3698                 nv_link_irq(dev);
3699                 spin_unlock_irqrestore(&np->lock, flags);
3700         }
3701         if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3702                 spin_lock_irqsave(&np->lock, flags);
3703                 nv_linkchange(dev);
3704                 spin_unlock_irqrestore(&np->lock, flags);
3705                 np->link_timeout = jiffies + LINK_TIMEOUT;
3706         }
3707         if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3708                 spin_lock_irqsave(&np->lock, flags);
3709                 if (!np->in_shutdown) {
3710                         np->nic_poll_irq = np->irqmask;
3711                         np->recover_error = 1;
3712                         mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3713                 }
3714                 spin_unlock_irqrestore(&np->lock, flags);
3715                 napi_complete(napi);
3716                 return rx_work;
3717         }
3718
3719         if (rx_work < budget) {
3720                 /* re-enable interrupts
3721                    (msix not enabled in napi) */
3722                 napi_complete(napi);
3723
3724                 writel(np->irqmask, base + NvRegIrqMask);
3725         }
3726         return rx_work;
3727 }
3728
3729 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3730 {
3731         struct net_device *dev = (struct net_device *) data;
3732         struct fe_priv *np = netdev_priv(dev);
3733         u8 __iomem *base = get_hwbase(dev);
3734         u32 events;
3735         int i;
3736         unsigned long flags;
3737
3738         for (i = 0;; i++) {
3739                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3740                 writel(events, base + NvRegMSIXIrqStatus);
3741                 netdev_dbg(dev, "rx irq events: %08x\n", events);
3742                 if (!(events & np->irqmask))
3743                         break;
3744
3745                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3746                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3747                                 spin_lock_irqsave(&np->lock, flags);
3748                                 if (!np->in_shutdown)
3749                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3750                                 spin_unlock_irqrestore(&np->lock, flags);
3751                         }
3752                 }
3753
3754                 if (unlikely(i > max_interrupt_work)) {
3755                         spin_lock_irqsave(&np->lock, flags);
3756                         /* disable interrupts on the nic */
3757                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3758                         pci_push(base);
3759
3760                         if (!np->in_shutdown) {
3761                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3762                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3763                         }
3764                         spin_unlock_irqrestore(&np->lock, flags);
3765                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3766                                    __func__, i);
3767                         break;
3768                 }
3769         }
3770
3771         return IRQ_RETVAL(i);
3772 }
3773
3774 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3775 {
3776         struct net_device *dev = (struct net_device *) data;
3777         struct fe_priv *np = netdev_priv(dev);
3778         u8 __iomem *base = get_hwbase(dev);
3779         u32 events;
3780         int i;
3781         unsigned long flags;
3782
3783         for (i = 0;; i++) {
3784                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3785                 writel(events, base + NvRegMSIXIrqStatus);
3786                 netdev_dbg(dev, "irq events: %08x\n", events);
3787                 if (!(events & np->irqmask))
3788                         break;
3789
3790                 /* check tx in case we reached max loop limit in tx isr */
3791                 spin_lock_irqsave(&np->lock, flags);
3792                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3793                 spin_unlock_irqrestore(&np->lock, flags);
3794
3795                 if (events & NVREG_IRQ_LINK) {
3796                         spin_lock_irqsave(&np->lock, flags);
3797                         nv_link_irq(dev);
3798                         spin_unlock_irqrestore(&np->lock, flags);
3799                 }
3800                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3801                         spin_lock_irqsave(&np->lock, flags);
3802                         nv_linkchange(dev);
3803                         spin_unlock_irqrestore(&np->lock, flags);
3804                         np->link_timeout = jiffies + LINK_TIMEOUT;
3805                 }
3806                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3807                         spin_lock_irqsave(&np->lock, flags);
3808                         /* disable interrupts on the nic */
3809                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3810                         pci_push(base);
3811
3812                         if (!np->in_shutdown) {
3813                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3814                                 np->recover_error = 1;
3815                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3816                         }
3817                         spin_unlock_irqrestore(&np->lock, flags);
3818                         break;
3819                 }
3820                 if (unlikely(i > max_interrupt_work)) {
3821                         spin_lock_irqsave(&np->lock, flags);
3822                         /* disable interrupts on the nic */
3823                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3824                         pci_push(base);
3825
3826                         if (!np->in_shutdown) {
3827                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3828                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3829                         }
3830                         spin_unlock_irqrestore(&np->lock, flags);
3831                         netdev_dbg(dev, "%s: too many iterations (%d)\n",
3832                                    __func__, i);
3833                         break;
3834                 }
3835
3836         }
3837
3838         return IRQ_RETVAL(i);
3839 }
3840
3841 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3842 {
3843         struct net_device *dev = (struct net_device *) data;
3844         struct fe_priv *np = netdev_priv(dev);
3845         u8 __iomem *base = get_hwbase(dev);
3846         u32 events;
3847
3848         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3849                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3850                 writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3851         } else {
3852                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3853                 writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3854         }
3855         pci_push(base);
3856         if (!(events & NVREG_IRQ_TIMER))
3857                 return IRQ_RETVAL(0);
3858
3859         nv_msi_workaround(np);
3860
3861         spin_lock(&np->lock);
3862         np->intr_test = 1;
3863         spin_unlock(&np->lock);
3864
3865         return IRQ_RETVAL(1);
3866 }
3867
3868 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3869 {
3870         u8 __iomem *base = get_hwbase(dev);
3871         int i;
3872         u32 msixmap = 0;
3873
3874         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3875          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3876          * the remaining 8 interrupts.
3877          */
3878         for (i = 0; i < 8; i++) {
3879                 if ((irqmask >> i) & 0x1)
3880                         msixmap |= vector << (i << 2);
3881         }
3882         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3883
3884         msixmap = 0;
3885         for (i = 0; i < 8; i++) {
3886                 if ((irqmask >> (i + 8)) & 0x1)
3887                         msixmap |= vector << (i << 2);
3888         }
3889         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3890 }
3891
3892 static int nv_request_irq(struct net_device *dev, int intr_test)
3893 {
3894         struct fe_priv *np = get_nvpriv(dev);
3895         u8 __iomem *base = get_hwbase(dev);
3896         int ret = 1;
3897         int i;
3898         irqreturn_t (*handler)(int foo, void *data);
3899
3900         if (intr_test) {
3901                 handler = nv_nic_irq_test;
3902         } else {
3903                 if (nv_optimized(np))
3904                         handler = nv_nic_irq_optimized;
3905                 else
3906                         handler = nv_nic_irq;
3907         }
3908
3909         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3910                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3911                         np->msi_x_entry[i].entry = i;
3912                 ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK));
3913                 if (ret == 0) {
3914                         np->msi_flags |= NV_MSI_X_ENABLED;
3915                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3916                                 /* Request irq for rx handling */
3917                                 sprintf(np->name_rx, "%s-rx", dev->name);
3918                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3919                                                 nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev) != 0) {
3920                                         netdev_info(dev,
3921                                                     "request_irq failed for rx %d\n",
3922                                                     ret);
3923                                         pci_disable_msix(np->pci_dev);
3924                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3925                                         goto out_err;
3926                                 }
3927                                 /* Request irq for tx handling */
3928                                 sprintf(np->name_tx, "%s-tx", dev->name);
3929                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3930                                                 nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev) != 0) {
3931                                         netdev_info(dev,
3932                                                     "request_irq failed for tx %d\n",
3933                                                     ret);
3934                                         pci_disable_msix(np->pci_dev);
3935                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3936                                         goto out_free_rx;
3937                                 }
3938                                 /* Request irq for link and timer handling */
3939                                 sprintf(np->name_other, "%s-other", dev->name);
3940                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3941                                                 nv_nic_irq_other, IRQF_SHARED, np->name_other, dev) != 0) {
3942                                         netdev_info(dev,
3943                                                     "request_irq failed for link %d\n",
3944                                                     ret);
3945                                         pci_disable_msix(np->pci_dev);
3946                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3947                                         goto out_free_tx;
3948                                 }
3949                                 /* map interrupts to their respective vector */
3950                                 writel(0, base + NvRegMSIXMap0);
3951                                 writel(0, base + NvRegMSIXMap1);
3952                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3953                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3954                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3955                         } else {
3956                                 /* Request irq for all interrupts */
3957                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3958                                         netdev_info(dev,
3959                                                     "request_irq failed %d\n",
3960                                                     ret);
3961                                         pci_disable_msix(np->pci_dev);
3962                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3963                                         goto out_err;
3964                                 }
3965
3966                                 /* map interrupts to vector 0 */
3967                                 writel(0, base + NvRegMSIXMap0);
3968                                 writel(0, base + NvRegMSIXMap1);
3969                         }
3970                         netdev_info(dev, "MSI-X enabled\n");
3971                 }
3972         }
3973         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3974                 ret = pci_enable_msi(np->pci_dev);
3975                 if (ret == 0) {
3976                         np->msi_flags |= NV_MSI_ENABLED;
3977                         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3978                                 netdev_info(dev, "request_irq failed %d\n",
3979                                             ret);
3980                                 pci_disable_msi(np->pci_dev);
3981                                 np->msi_flags &= ~NV_MSI_ENABLED;
3982                                 goto out_err;
3983                         }
3984
3985                         /* map interrupts to vector 0 */
3986                         writel(0, base + NvRegMSIMap0);
3987                         writel(0, base + NvRegMSIMap1);
3988                         /* enable msi vector 0 */
3989                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3990                         netdev_info(dev, "MSI enabled\n");
3991                 }
3992         }
3993         if (ret != 0) {
3994                 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3995                         goto out_err;
3996
3997         }
3998
3999         return 0;
4000 out_free_tx:
4001         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4002 out_free_rx:
4003         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4004 out_err:
4005         return 1;
4006 }
4007
4008 static void nv_free_irq(struct net_device *dev)
4009 {
4010         struct fe_priv *np = get_nvpriv(dev);
4011         int i;
4012
4013         if (np->msi_flags & NV_MSI_X_ENABLED) {
4014                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4015                         free_irq(np->msi_x_entry[i].vector, dev);
4016                 pci_disable_msix(np->pci_dev);
4017                 np->msi_flags &= ~NV_MSI_X_ENABLED;
4018         } else {
4019                 free_irq(np->pci_dev->irq, dev);
4020                 if (np->msi_flags & NV_MSI_ENABLED) {
4021                         pci_disable_msi(np->pci_dev);
4022                         np->msi_flags &= ~NV_MSI_ENABLED;
4023                 }
4024         }
4025 }
4026
4027 static void nv_do_nic_poll(unsigned long data)
4028 {
4029         struct net_device *dev = (struct net_device *) data;
4030         struct fe_priv *np = netdev_priv(dev);
4031         u8 __iomem *base = get_hwbase(dev);
4032         u32 mask = 0;
4033
4034         /*
4035          * First disable irq(s) and then
4036          * reenable interrupts on the nic, we have to do this before calling
4037          * nv_nic_irq because that may decide to do otherwise
4038          */
4039
4040         if (!using_multi_irqs(dev)) {
4041                 if (np->msi_flags & NV_MSI_X_ENABLED)
4042                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4043                 else
4044                         disable_irq_lockdep(np->pci_dev->irq);
4045                 mask = np->irqmask;
4046         } else {
4047                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4048                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4049                         mask |= NVREG_IRQ_RX_ALL;
4050                 }
4051                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4052                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4053                         mask |= NVREG_IRQ_TX_ALL;
4054                 }
4055                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4056                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4057                         mask |= NVREG_IRQ_OTHER;
4058                 }
4059         }
4060         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
4061
4062         if (np->recover_error) {
4063                 np->recover_error = 0;
4064                 netdev_info(dev, "MAC in recoverable error state\n");
4065                 if (netif_running(dev)) {
4066                         netif_tx_lock_bh(dev);
4067                         netif_addr_lock(dev);
4068                         spin_lock(&np->lock);
4069                         /* stop engines */
4070                         nv_stop_rxtx(dev);
4071                         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4072                                 nv_mac_reset(dev);
4073                         nv_txrx_reset(dev);
4074                         /* drain rx queue */
4075                         nv_drain_rxtx(dev);
4076                         /* reinit driver view of the rx queue */
4077                         set_bufsize(dev);
4078                         if (nv_init_ring(dev)) {
4079                                 if (!np->in_shutdown)
4080                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4081                         }
4082                         /* reinit nic view of the rx queue */
4083                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4084                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4085                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4086                                 base + NvRegRingSizes);
4087                         pci_push(base);
4088                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4089                         pci_push(base);
4090                         /* clear interrupts */
4091                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4092                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4093                         else
4094                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4095
4096                         /* restart rx engine */
4097                         nv_start_rxtx(dev);
4098                         spin_unlock(&np->lock);
4099                         netif_addr_unlock(dev);
4100                         netif_tx_unlock_bh(dev);
4101                 }
4102         }
4103
4104         writel(mask, base + NvRegIrqMask);
4105         pci_push(base);
4106
4107         if (!using_multi_irqs(dev)) {
4108                 np->nic_poll_irq = 0;
4109                 if (nv_optimized(np))
4110                         nv_nic_irq_optimized(0, dev);
4111                 else
4112                         nv_nic_irq(0, dev);
4113                 if (np->msi_flags & NV_MSI_X_ENABLED)
4114                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4115                 else
4116                         enable_irq_lockdep(np->pci_dev->irq);
4117         } else {
4118                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4119                         np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4120                         nv_nic_irq_rx(0, dev);
4121                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4122                 }
4123                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4124                         np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4125                         nv_nic_irq_tx(0, dev);
4126                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4127                 }
4128                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4129                         np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4130                         nv_nic_irq_other(0, dev);
4131                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4132                 }
4133         }
4134
4135 }
4136
4137 #ifdef CONFIG_NET_POLL_CONTROLLER
4138 static void nv_poll_controller(struct net_device *dev)
4139 {
4140         nv_do_nic_poll((unsigned long) dev);
4141 }
4142 #endif
4143
4144 static void nv_do_stats_poll(unsigned long data)
4145         __acquires(&netdev_priv(dev)->hwstats_lock)
4146         __releases(&netdev_priv(dev)->hwstats_lock)
4147 {
4148         struct net_device *dev = (struct net_device *) data;
4149         struct fe_priv *np = netdev_priv(dev);
4150
4151         /* If lock is currently taken, the stats are being refreshed
4152          * and hence fresh enough */
4153         if (spin_trylock(&np->hwstats_lock)) {
4154                 nv_update_stats(dev);
4155                 spin_unlock(&np->hwstats_lock);
4156         }
4157
4158         if (!np->in_shutdown)
4159                 mod_timer(&np->stats_poll,
4160                         round_jiffies(jiffies + STATS_INTERVAL));
4161 }
4162
4163 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4164 {
4165         struct fe_priv *np = netdev_priv(dev);
4166         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4167         strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4168         strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4169 }
4170
4171 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4172 {
4173         struct fe_priv *np = netdev_priv(dev);
4174         wolinfo->supported = WAKE_MAGIC;
4175
4176         spin_lock_irq(&np->lock);
4177         if (np->wolenabled)
4178                 wolinfo->wolopts = WAKE_MAGIC;
4179         spin_unlock_irq(&np->lock);
4180 }
4181
4182 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4183 {
4184         struct fe_priv *np = netdev_priv(dev);
4185         u8 __iomem *base = get_hwbase(dev);
4186         u32 flags = 0;
4187
4188         if (wolinfo->wolopts == 0) {
4189                 np->wolenabled = 0;
4190         } else if (wolinfo->wolopts & WAKE_MAGIC) {
4191                 np->wolenabled = 1;
4192                 flags = NVREG_WAKEUPFLAGS_ENABLE;
4193         }
4194         if (netif_running(dev)) {
4195                 spin_lock_irq(&np->lock);
4196                 writel(flags, base + NvRegWakeUpFlags);
4197                 spin_unlock_irq(&np->lock);
4198         }
4199         device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4200         return 0;
4201 }
4202
4203 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4204 {
4205         struct fe_priv *np = netdev_priv(dev);
4206         u32 speed;
4207         int adv;
4208
4209         spin_lock_irq(&np->lock);
4210         ecmd->port = PORT_MII;
4211         if (!netif_running(dev)) {
4212                 /* We do not track link speed / duplex setting if the
4213                  * interface is disabled. Force a link check */
4214                 if (nv_update_linkspeed(dev)) {
4215                         if (!netif_carrier_ok(dev))
4216                                 netif_carrier_on(dev);
4217                 } else {
4218                         if (netif_carrier_ok(dev))
4219                                 netif_carrier_off(dev);
4220                 }
4221         }
4222
4223         if (netif_carrier_ok(dev)) {
4224                 switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4225                 case NVREG_LINKSPEED_10:
4226                         speed = SPEED_10;
4227                         break;
4228                 case NVREG_LINKSPEED_100:
4229                         speed = SPEED_100;
4230                         break;
4231                 case NVREG_LINKSPEED_1000:
4232                         speed = SPEED_1000;
4233                         break;
4234                 default:
4235                         speed = -1;
4236                         break;
4237                 }
4238                 ecmd->duplex = DUPLEX_HALF;
4239                 if (np->duplex)
4240                         ecmd->duplex = DUPLEX_FULL;
4241         } else {
4242                 speed = -1;
4243                 ecmd->duplex = -1;
4244         }
4245         ethtool_cmd_speed_set(ecmd, speed);
4246         ecmd->autoneg = np->autoneg;
4247
4248         ecmd->advertising = ADVERTISED_MII;
4249         if (np->autoneg) {
4250                 ecmd->advertising |= ADVERTISED_Autoneg;
4251                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4252                 if (adv & ADVERTISE_10HALF)
4253                         ecmd->advertising |= ADVERTISED_10baseT_Half;
4254                 if (adv & ADVERTISE_10FULL)
4255                         ecmd->advertising |= ADVERTISED_10baseT_Full;
4256                 if (adv & ADVERTISE_100HALF)
4257                         ecmd->advertising |= ADVERTISED_100baseT_Half;
4258                 if (adv & ADVERTISE_100FULL)
4259                         ecmd->advertising |= ADVERTISED_100baseT_Full;
4260                 if (np->gigabit == PHY_GIGABIT) {
4261                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4262                         if (adv & ADVERTISE_1000FULL)
4263                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4264                 }
4265         }
4266         ecmd->supported = (SUPPORTED_Autoneg |
4267                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4268                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4269                 SUPPORTED_MII);
4270         if (np->gigabit == PHY_GIGABIT)
4271                 ecmd->supported |= SUPPORTED_1000baseT_Full;
4272
4273         ecmd->phy_address = np->phyaddr;
4274         ecmd->transceiver = XCVR_EXTERNAL;
4275
4276         /* ignore maxtxpkt, maxrxpkt for now */
4277         spin_unlock_irq(&np->lock);
4278         return 0;
4279 }
4280
4281 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4282 {
4283         struct fe_priv *np = netdev_priv(dev);
4284         u32 speed = ethtool_cmd_speed(ecmd);
4285
4286         if (ecmd->port != PORT_MII)
4287                 return -EINVAL;
4288         if (ecmd->transceiver != XCVR_EXTERNAL)
4289                 return -EINVAL;
4290         if (ecmd->phy_address != np->phyaddr) {
4291                 /* TODO: support switching between multiple phys. Should be
4292                  * trivial, but not enabled due to lack of test hardware. */
4293                 return -EINVAL;
4294         }
4295         if (ecmd->autoneg == AUTONEG_ENABLE) {
4296                 u32 mask;
4297
4298                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4299                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4300                 if (np->gigabit == PHY_GIGABIT)
4301                         mask |= ADVERTISED_1000baseT_Full;
4302
4303                 if ((ecmd->advertising & mask) == 0)
4304                         return -EINVAL;
4305
4306         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4307                 /* Note: autonegotiation disable, speed 1000 intentionally
4308                  * forbidden - no one should need that. */
4309
4310                 if (speed != SPEED_10 && speed != SPEED_100)
4311                         return -EINVAL;
4312                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4313                         return -EINVAL;
4314         } else {
4315                 return -EINVAL;
4316         }
4317
4318         netif_carrier_off(dev);
4319         if (netif_running(dev)) {
4320                 unsigned long flags;
4321
4322                 nv_disable_irq(dev);
4323                 netif_tx_lock_bh(dev);
4324                 netif_addr_lock(dev);
4325                 /* with plain spinlock lockdep complains */
4326                 spin_lock_irqsave(&np->lock, flags);
4327                 /* stop engines */
4328                 /* FIXME:
4329                  * this can take some time, and interrupts are disabled
4330                  * due to spin_lock_irqsave, but let's hope no daemon
4331                  * is going to change the settings very often...
4332                  * Worst case:
4333                  * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4334                  * + some minor delays, which is up to a second approximately
4335                  */
4336                 nv_stop_rxtx(dev);
4337                 spin_unlock_irqrestore(&np->lock, flags);
4338                 netif_addr_unlock(dev);
4339                 netif_tx_unlock_bh(dev);
4340         }
4341
4342         if (ecmd->autoneg == AUTONEG_ENABLE) {
4343                 int adv, bmcr;
4344
4345                 np->autoneg = 1;
4346
4347                 /* advertise only what has been requested */
4348                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4349                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4350                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4351                         adv |= ADVERTISE_10HALF;
4352                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4353                         adv |= ADVERTISE_10FULL;
4354                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4355                         adv |= ADVERTISE_100HALF;
4356                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4357                         adv |= ADVERTISE_100FULL;
4358                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisements but disable tx pause */
4359                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4360                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4361                         adv |=  ADVERTISE_PAUSE_ASYM;
4362                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4363
4364                 if (np->gigabit == PHY_GIGABIT) {
4365                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4366                         adv &= ~ADVERTISE_1000FULL;
4367                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4368                                 adv |= ADVERTISE_1000FULL;
4369                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4370                 }
4371
4372                 if (netif_running(dev))
4373                         netdev_info(dev, "link down\n");
4374                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4375                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4376                         bmcr |= BMCR_ANENABLE;
4377                         /* reset the phy in order for settings to stick,
4378                          * and cause autoneg to start */
4379                         if (phy_reset(dev, bmcr)) {
4380                                 netdev_info(dev, "phy reset failed\n");
4381                                 return -EINVAL;
4382                         }
4383                 } else {
4384                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4385                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4386                 }
4387         } else {
4388                 int adv, bmcr;
4389
4390                 np->autoneg = 0;
4391
4392                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4393                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4394                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4395                         adv |= ADVERTISE_10HALF;
4396                 if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4397                         adv |= ADVERTISE_10FULL;
4398                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4399                         adv |= ADVERTISE_100HALF;
4400                 if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4401                         adv |= ADVERTISE_100FULL;
4402                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4403                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4404                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4405                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4406                 }
4407                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4408                         adv |=  ADVERTISE_PAUSE_ASYM;
4409                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4410                 }
4411                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4412                 np->fixed_mode = adv;
4413
4414                 if (np->gigabit == PHY_GIGABIT) {
4415                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4416                         adv &= ~ADVERTISE_1000FULL;
4417                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4418                 }
4419
4420                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4421                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4422                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4423                         bmcr |= BMCR_FULLDPLX;
4424                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4425                         bmcr |= BMCR_SPEED100;
4426                 if (np->phy_oui == PHY_OUI_MARVELL) {
4427                         /* reset the phy in order for forced mode settings to stick */
4428                         if (phy_reset(dev, bmcr)) {
4429                                 netdev_info(dev, "phy reset failed\n");
4430                                 return -EINVAL;
4431                         }
4432                 } else {
4433                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4434                         if (netif_running(dev)) {
4435                                 /* Wait a bit and then reconfigure the nic. */
4436                                 udelay(10);
4437                                 nv_linkchange(dev);
4438                         }
4439                 }
4440         }
4441
4442         if (netif_running(dev)) {
4443                 nv_start_rxtx(dev);
4444                 nv_enable_irq(dev);
4445         }
4446
4447         return 0;
4448 }
4449
4450 #define FORCEDETH_REGS_VER      1
4451
4452 static int nv_get_regs_len(struct net_device *dev)
4453 {
4454         struct fe_priv *np = netdev_priv(dev);
4455         return np->register_size;
4456 }
4457
4458 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4459 {
4460         struct fe_priv *np = netdev_priv(dev);
4461         u8 __iomem *base = get_hwbase(dev);
4462         u32 *rbuf = buf;
4463         int i;
4464
4465         regs->version = FORCEDETH_REGS_VER;
4466         spin_lock_irq(&np->lock);
4467         for (i = 0; i < np->register_size/sizeof(u32); i++)
4468                 rbuf[i] = readl(base + i*sizeof(u32));
4469         spin_unlock_irq(&np->lock);
4470 }
4471
4472 static int nv_nway_reset(struct net_device *dev)
4473 {
4474         struct fe_priv *np = netdev_priv(dev);
4475         int ret;
4476
4477         if (np->autoneg) {
4478                 int bmcr;
4479
4480                 netif_carrier_off(dev);
4481                 if (netif_running(dev)) {
4482                         nv_disable_irq(dev);
4483                         netif_tx_lock_bh(dev);
4484                         netif_addr_lock(dev);
4485                         spin_lock(&np->lock);
4486                         /* stop engines */
4487                         nv_stop_rxtx(dev);
4488                         spin_unlock(&np->lock);
4489                         netif_addr_unlock(dev);
4490                         netif_tx_unlock_bh(dev);
4491                         netdev_info(dev, "link down\n");
4492                 }
4493
4494                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4495                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4496                         bmcr |= BMCR_ANENABLE;
4497                         /* reset the phy in order for settings to stick*/
4498                         if (phy_reset(dev, bmcr)) {
4499                                 netdev_info(dev, "phy reset failed\n");
4500                                 return -EINVAL;
4501                         }
4502                 } else {
4503                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4504                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4505                 }
4506
4507                 if (netif_running(dev)) {
4508                         nv_start_rxtx(dev);
4509                         nv_enable_irq(dev);
4510                 }
4511                 ret = 0;
4512         } else {
4513                 ret = -EINVAL;
4514         }
4515
4516         return ret;
4517 }
4518
4519 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4520 {
4521         struct fe_priv *np = netdev_priv(dev);
4522
4523         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4524         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4525
4526         ring->rx_pending = np->rx_ring_size;
4527         ring->tx_pending = np->tx_ring_size;
4528 }
4529
4530 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4531 {
4532         struct fe_priv *np = netdev_priv(dev);
4533         u8 __iomem *base = get_hwbase(dev);
4534         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4535         dma_addr_t ring_addr;
4536
4537         if (ring->rx_pending < RX_RING_MIN ||
4538             ring->tx_pending < TX_RING_MIN ||
4539             ring->rx_mini_pending != 0 ||
4540             ring->rx_jumbo_pending != 0 ||
4541             (np->desc_ver == DESC_VER_1 &&
4542              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4543               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4544             (np->desc_ver != DESC_VER_1 &&
4545              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4546               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4547                 return -EINVAL;
4548         }
4549
4550         /* allocate new rings */
4551         if (!nv_optimized(np)) {
4552                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4553                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4554                                             &ring_addr);
4555         } else {
4556                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4557                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4558                                             &ring_addr);
4559         }
4560         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4561         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4562         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4563                 /* fall back to old rings */
4564                 if (!nv_optimized(np)) {
4565                         if (rxtx_ring)
4566                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4567                                                     rxtx_ring, ring_addr);
4568                 } else {
4569                         if (rxtx_ring)
4570                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4571                                                     rxtx_ring, ring_addr);
4572                 }
4573
4574                 kfree(rx_skbuff);
4575                 kfree(tx_skbuff);
4576                 goto exit;
4577         }
4578
4579         if (netif_running(dev)) {
4580                 nv_disable_irq(dev);
4581                 nv_napi_disable(dev);
4582                 netif_tx_lock_bh(dev);
4583                 netif_addr_lock(dev);
4584                 spin_lock(&np->lock);
4585                 /* stop engines */
4586                 nv_stop_rxtx(dev);
4587                 nv_txrx_reset(dev);
4588                 /* drain queues */
4589                 nv_drain_rxtx(dev);
4590                 /* delete queues */
4591                 free_rings(dev);
4592         }
4593
4594         /* set new values */
4595         np->rx_ring_size = ring->rx_pending;
4596         np->tx_ring_size = ring->tx_pending;
4597
4598         if (!nv_optimized(np)) {
4599                 np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4600                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4601         } else {
4602                 np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4603                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4604         }
4605         np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4606         np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4607         np->ring_addr = ring_addr;
4608
4609         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4610         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4611
4612         if (netif_running(dev)) {
4613                 /* reinit driver view of the queues */
4614                 set_bufsize(dev);
4615                 if (nv_init_ring(dev)) {
4616                         if (!np->in_shutdown)
4617                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4618                 }
4619
4620                 /* reinit nic view of the queues */
4621                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4622                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4623                 writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4624                         base + NvRegRingSizes);
4625                 pci_push(base);
4626                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4627                 pci_push(base);
4628
4629                 /* restart engines */
4630                 nv_start_rxtx(dev);
4631                 spin_unlock(&np->lock);
4632                 netif_addr_unlock(dev);
4633                 netif_tx_unlock_bh(dev);
4634                 nv_napi_enable(dev);
4635                 nv_enable_irq(dev);
4636         }
4637         return 0;
4638 exit:
4639         return -ENOMEM;
4640 }
4641
4642 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4643 {
4644         struct fe_priv *np = netdev_priv(dev);
4645
4646         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4647         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4648         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4649 }
4650
4651 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4652 {
4653         struct fe_priv *np = netdev_priv(dev);
4654         int adv, bmcr;
4655
4656         if ((!np->autoneg && np->duplex == 0) ||
4657             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4658                 netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4659                 return -EINVAL;
4660         }
4661         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4662                 netdev_info(dev, "hardware does not support tx pause frames\n");
4663                 return -EINVAL;
4664         }
4665
4666         netif_carrier_off(dev);
4667         if (netif_running(dev)) {
4668                 nv_disable_irq(dev);
4669                 netif_tx_lock_bh(dev);
4670                 netif_addr_lock(dev);
4671                 spin_lock(&np->lock);
4672                 /* stop engines */
4673                 nv_stop_rxtx(dev);
4674                 spin_unlock(&np->lock);
4675                 netif_addr_unlock(dev);
4676                 netif_tx_unlock_bh(dev);
4677         }
4678
4679         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4680         if (pause->rx_pause)
4681                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4682         if (pause->tx_pause)
4683                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4684
4685         if (np->autoneg && pause->autoneg) {
4686                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4687
4688                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4689                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4690                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4691                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4692                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4693                         adv |=  ADVERTISE_PAUSE_ASYM;
4694                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4695
4696                 if (netif_running(dev))
4697                         netdev_info(dev, "link down\n");
4698                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4699                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4700                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4701         } else {
4702                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4703                 if (pause->rx_pause)
4704                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4705                 if (pause->tx_pause)
4706                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4707
4708                 if (!netif_running(dev))
4709                         nv_update_linkspeed(dev);
4710                 else
4711                         nv_update_pause(dev, np->pause_flags);
4712         }
4713
4714         if (netif_running(dev)) {
4715                 nv_start_rxtx(dev);
4716                 nv_enable_irq(dev);
4717         }
4718         return 0;
4719 }
4720
4721 static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4722 {
4723         struct fe_priv *np = netdev_priv(dev);
4724         unsigned long flags;
4725         u32 miicontrol;
4726         int err, retval = 0;
4727
4728         spin_lock_irqsave(&np->lock, flags);
4729         miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4730         if (features & NETIF_F_LOOPBACK) {
4731                 if (miicontrol & BMCR_LOOPBACK) {
4732                         spin_unlock_irqrestore(&np->lock, flags);
4733                         netdev_info(dev, "Loopback already enabled\n");
4734                         return 0;
4735                 }
4736                 nv_disable_irq(dev);
4737                 /* Turn on loopback mode */
4738                 miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4739                 err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4740                 if (err) {
4741                         retval = PHY_ERROR;
4742                         spin_unlock_irqrestore(&np->lock, flags);
4743                         phy_init(dev);
4744                 } else {
4745                         if (netif_running(dev)) {
4746                                 /* Force 1000 Mbps full-duplex */
4747                                 nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4748                                                                          1);
4749                                 /* Force link up */
4750                                 netif_carrier_on(dev);
4751                         }
4752                         spin_unlock_irqrestore(&np->lock, flags);
4753                         netdev_info(dev,
4754                                 "Internal PHY loopback mode enabled.\n");
4755                 }
4756         } else {
4757                 if (!(miicontrol & BMCR_LOOPBACK)) {
4758                         spin_unlock_irqrestore(&np->lock, flags);
4759                         netdev_info(dev, "Loopback already disabled\n");
4760                         return 0;
4761                 }
4762                 nv_disable_irq(dev);
4763                 /* Turn off loopback */
4764                 spin_unlock_irqrestore(&np->lock, flags);
4765                 netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4766                 phy_init(dev);
4767         }
4768         msleep(500);
4769         spin_lock_irqsave(&np->lock, flags);
4770         nv_enable_irq(dev);
4771         spin_unlock_irqrestore(&np->lock, flags);
4772
4773         return retval;
4774 }
4775
4776 static netdev_features_t nv_fix_features(struct net_device *dev,
4777         netdev_features_t features)
4778 {
4779         /* vlan is dependent on rx checksum offload */
4780         if (features & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
4781                 features |= NETIF_F_RXCSUM;
4782
4783         return features;
4784 }
4785
4786 static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4787 {
4788         struct fe_priv *np = get_nvpriv(dev);
4789
4790         spin_lock_irq(&np->lock);
4791
4792         if (features & NETIF_F_HW_VLAN_RX)
4793                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4794         else
4795                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4796
4797         if (features & NETIF_F_HW_VLAN_TX)
4798                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4799         else
4800                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4801
4802         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4803
4804         spin_unlock_irq(&np->lock);
4805 }
4806
4807 static int nv_set_features(struct net_device *dev, netdev_features_t features)
4808 {
4809         struct fe_priv *np = netdev_priv(dev);
4810         u8 __iomem *base = get_hwbase(dev);
4811         netdev_features_t changed = dev->features ^ features;
4812         int retval;
4813
4814         if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4815                 retval = nv_set_loopback(dev, features);
4816                 if (retval != 0)
4817                         return retval;
4818         }
4819
4820         if (changed & NETIF_F_RXCSUM) {
4821                 spin_lock_irq(&np->lock);
4822
4823                 if (features & NETIF_F_RXCSUM)
4824                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4825                 else
4826                         np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4827
4828                 if (netif_running(dev))
4829                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4830
4831                 spin_unlock_irq(&np->lock);
4832         }
4833
4834         if (changed & (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX))
4835                 nv_vlan_mode(dev, features);
4836
4837         return 0;
4838 }
4839
4840 static int nv_get_sset_count(struct net_device *dev, int sset)
4841 {
4842         struct fe_priv *np = netdev_priv(dev);
4843
4844         switch (sset) {
4845         case ETH_SS_TEST:
4846                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4847                         return NV_TEST_COUNT_EXTENDED;
4848                 else
4849                         return NV_TEST_COUNT_BASE;
4850         case ETH_SS_STATS:
4851                 if (np->driver_data & DEV_HAS_STATISTICS_V3)
4852                         return NV_DEV_STATISTICS_V3_COUNT;
4853                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4854                         return NV_DEV_STATISTICS_V2_COUNT;
4855                 else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4856                         return NV_DEV_STATISTICS_V1_COUNT;
4857                 else
4858                         return 0;
4859         default:
4860                 return -EOPNOTSUPP;
4861         }
4862 }
4863
4864 static void nv_get_ethtool_stats(struct net_device *dev,
4865                                  struct ethtool_stats *estats, u64 *buffer)
4866         __acquires(&netdev_priv(dev)->hwstats_lock)
4867         __releases(&netdev_priv(dev)->hwstats_lock)
4868 {
4869         struct fe_priv *np = netdev_priv(dev);
4870
4871         spin_lock_bh(&np->hwstats_lock);
4872         nv_update_stats(dev);
4873         memcpy(buffer, &np->estats,
4874                nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4875         spin_unlock_bh(&np->hwstats_lock);
4876 }
4877
4878 static int nv_link_test(struct net_device *dev)
4879 {
4880         struct fe_priv *np = netdev_priv(dev);
4881         int mii_status;
4882
4883         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4884         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4885
4886         /* check phy link status */
4887         if (!(mii_status & BMSR_LSTATUS))
4888                 return 0;
4889         else
4890                 return 1;
4891 }
4892
4893 static int nv_register_test(struct net_device *dev)
4894 {
4895         u8 __iomem *base = get_hwbase(dev);
4896         int i = 0;
4897         u32 orig_read, new_read;
4898
4899         do {
4900                 orig_read = readl(base + nv_registers_test[i].reg);
4901
4902                 /* xor with mask to toggle bits */
4903                 orig_read ^= nv_registers_test[i].mask;
4904
4905                 writel(orig_read, base + nv_registers_test[i].reg);
4906
4907                 new_read = readl(base + nv_registers_test[i].reg);
4908
4909                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4910                         return 0;
4911
4912                 /* restore original value */
4913                 orig_read ^= nv_registers_test[i].mask;
4914                 writel(orig_read, base + nv_registers_test[i].reg);
4915
4916         } while (nv_registers_test[++i].reg != 0);
4917
4918         return 1;
4919 }
4920
4921 static int nv_interrupt_test(struct net_device *dev)
4922 {
4923         struct fe_priv *np = netdev_priv(dev);
4924         u8 __iomem *base = get_hwbase(dev);
4925         int ret = 1;
4926         int testcnt;
4927         u32 save_msi_flags, save_poll_interval = 0;
4928
4929         if (netif_running(dev)) {
4930                 /* free current irq */
4931                 nv_free_irq(dev);
4932                 save_poll_interval = readl(base+NvRegPollingInterval);
4933         }
4934
4935         /* flag to test interrupt handler */
4936         np->intr_test = 0;
4937
4938         /* setup test irq */
4939         save_msi_flags = np->msi_flags;
4940         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4941         np->msi_flags |= 0x001; /* setup 1 vector */
4942         if (nv_request_irq(dev, 1))
4943                 return 0;
4944
4945         /* setup timer interrupt */
4946         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4947         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4948
4949         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4950
4951         /* wait for at least one interrupt */
4952         msleep(100);
4953
4954         spin_lock_irq(&np->lock);
4955
4956         /* flag should be set within ISR */
4957         testcnt = np->intr_test;
4958         if (!testcnt)
4959                 ret = 2;
4960
4961         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4962         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4963                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4964         else
4965                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4966
4967         spin_unlock_irq(&np->lock);
4968
4969         nv_free_irq(dev);
4970
4971         np->msi_flags = save_msi_flags;
4972
4973         if (netif_running(dev)) {
4974                 writel(save_poll_interval, base + NvRegPollingInterval);
4975                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4976                 /* restore original irq */
4977                 if (nv_request_irq(dev, 0))
4978                         return 0;
4979         }
4980
4981         return ret;
4982 }
4983
4984 static int nv_loopback_test(struct net_device *dev)
4985 {
4986         struct fe_priv *np = netdev_priv(dev);
4987         u8 __iomem *base = get_hwbase(dev);
4988         struct sk_buff *tx_skb, *rx_skb;
4989         dma_addr_t test_dma_addr;
4990         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4991         u32 flags;
4992         int len, i, pkt_len;
4993         u8 *pkt_data;
4994         u32 filter_flags = 0;
4995         u32 misc1_flags = 0;
4996         int ret = 1;
4997
4998         if (netif_running(dev)) {
4999                 nv_disable_irq(dev);
5000                 filter_flags = readl(base + NvRegPacketFilterFlags);
5001                 misc1_flags = readl(base + NvRegMisc1);
5002         } else {
5003                 nv_txrx_reset(dev);
5004         }
5005
5006         /* reinit driver view of the rx queue */
5007         set_bufsize(dev);
5008         nv_init_ring(dev);
5009
5010         /* setup hardware for loopback */
5011         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5012         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5013
5014         /* reinit nic view of the rx queue */
5015         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5016         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5017         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5018                 base + NvRegRingSizes);
5019         pci_push(base);
5020
5021         /* restart rx engine */
5022         nv_start_rxtx(dev);
5023
5024         /* setup packet for tx */
5025         pkt_len = ETH_DATA_LEN;
5026         tx_skb = netdev_alloc_skb(dev, pkt_len);
5027         if (!tx_skb) {
5028                 ret = 0;
5029                 goto out;
5030         }
5031         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5032                                        skb_tailroom(tx_skb),
5033                                        PCI_DMA_FROMDEVICE);
5034         if (pci_dma_mapping_error(np->pci_dev,
5035                                   test_dma_addr)) {
5036                 dev_kfree_skb_any(tx_skb);
5037                 goto out;
5038         }
5039         pkt_data = skb_put(tx_skb, pkt_len);
5040         for (i = 0; i < pkt_len; i++)
5041                 pkt_data[i] = (u8)(i & 0xff);
5042
5043         if (!nv_optimized(np)) {
5044                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5045                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5046         } else {
5047                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5048                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5049                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5050         }
5051         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5052         pci_push(get_hwbase(dev));
5053
5054         msleep(500);
5055
5056         /* check for rx of the packet */
5057         if (!nv_optimized(np)) {
5058                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5059                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5060
5061         } else {
5062                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5063                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5064         }
5065
5066         if (flags & NV_RX_AVAIL) {
5067                 ret = 0;
5068         } else if (np->desc_ver == DESC_VER_1) {
5069                 if (flags & NV_RX_ERROR)
5070                         ret = 0;
5071         } else {
5072                 if (flags & NV_RX2_ERROR)
5073                         ret = 0;
5074         }
5075
5076         if (ret) {
5077                 if (len != pkt_len) {
5078                         ret = 0;
5079                 } else {
5080                         rx_skb = np->rx_skb[0].skb;
5081                         for (i = 0; i < pkt_len; i++) {
5082                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
5083                                         ret = 0;
5084                                         break;
5085                                 }
5086                         }
5087                 }
5088         }
5089
5090         pci_unmap_single(np->pci_dev, test_dma_addr,
5091                        (skb_end_pointer(tx_skb) - tx_skb->data),
5092                        PCI_DMA_TODEVICE);
5093         dev_kfree_skb_any(tx_skb);
5094  out:
5095         /* stop engines */
5096         nv_stop_rxtx(dev);
5097         nv_txrx_reset(dev);
5098         /* drain rx queue */
5099         nv_drain_rxtx(dev);
5100
5101         if (netif_running(dev)) {
5102                 writel(misc1_flags, base + NvRegMisc1);
5103                 writel(filter_flags, base + NvRegPacketFilterFlags);
5104                 nv_enable_irq(dev);
5105         }
5106
5107         return ret;
5108 }
5109
5110 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5111 {
5112         struct fe_priv *np = netdev_priv(dev);
5113         u8 __iomem *base = get_hwbase(dev);
5114         int result;
5115         memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
5116
5117         if (!nv_link_test(dev)) {
5118                 test->flags |= ETH_TEST_FL_FAILED;
5119                 buffer[0] = 1;
5120         }
5121
5122         if (test->flags & ETH_TEST_FL_OFFLINE) {
5123                 if (netif_running(dev)) {
5124                         netif_stop_queue(dev);
5125                         nv_napi_disable(dev);
5126                         netif_tx_lock_bh(dev);
5127                         netif_addr_lock(dev);
5128                         spin_lock_irq(&np->lock);
5129                         nv_disable_hw_interrupts(dev, np->irqmask);
5130                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
5131                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5132                         else
5133                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5134                         /* stop engines */
5135                         nv_stop_rxtx(dev);
5136                         nv_txrx_reset(dev);
5137                         /* drain rx queue */
5138                         nv_drain_rxtx(dev);
5139                         spin_unlock_irq(&np->lock);
5140                         netif_addr_unlock(dev);
5141                         netif_tx_unlock_bh(dev);
5142                 }
5143
5144                 if (!nv_register_test(dev)) {
5145                         test->flags |= ETH_TEST_FL_FAILED;
5146                         buffer[1] = 1;
5147                 }
5148
5149                 result = nv_interrupt_test(dev);
5150                 if (result != 1) {
5151                         test->flags |= ETH_TEST_FL_FAILED;
5152                         buffer[2] = 1;
5153                 }
5154                 if (result == 0) {
5155                         /* bail out */
5156                         return;
5157                 }
5158
5159                 if (!nv_loopback_test(dev)) {
5160                         test->flags |= ETH_TEST_FL_FAILED;
5161                         buffer[3] = 1;
5162                 }
5163
5164                 if (netif_running(dev)) {
5165                         /* reinit driver view of the rx queue */
5166                         set_bufsize(dev);
5167                         if (nv_init_ring(dev)) {
5168                                 if (!np->in_shutdown)
5169                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5170                         }
5171                         /* reinit nic view of the rx queue */
5172                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5173                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5174                         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5175                                 base + NvRegRingSizes);
5176                         pci_push(base);
5177                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5178                         pci_push(base);
5179                         /* restart rx engine */
5180                         nv_start_rxtx(dev);
5181                         netif_start_queue(dev);
5182                         nv_napi_enable(dev);
5183                         nv_enable_hw_interrupts(dev, np->irqmask);
5184                 }
5185         }
5186 }
5187
5188 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5189 {
5190         switch (stringset) {
5191         case ETH_SS_STATS:
5192                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5193                 break;
5194         case ETH_SS_TEST:
5195                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5196                 break;
5197         }
5198 }
5199
5200 static const struct ethtool_ops ops = {
5201         .get_drvinfo = nv_get_drvinfo,
5202         .get_link = ethtool_op_get_link,
5203         .get_wol = nv_get_wol,
5204         .set_wol = nv_set_wol,
5205         .get_settings = nv_get_settings,
5206         .set_settings = nv_set_settings,
5207         .get_regs_len = nv_get_regs_len,
5208         .get_regs = nv_get_regs,
5209         .nway_reset = nv_nway_reset,
5210         .get_ringparam = nv_get_ringparam,
5211         .set_ringparam = nv_set_ringparam,
5212         .get_pauseparam = nv_get_pauseparam,
5213         .set_pauseparam = nv_set_pauseparam,
5214         .get_strings = nv_get_strings,
5215         .get_ethtool_stats = nv_get_ethtool_stats,
5216         .get_sset_count = nv_get_sset_count,
5217         .self_test = nv_self_test,
5218         .get_ts_info = ethtool_op_get_ts_info,
5219 };
5220
5221 /* The mgmt unit and driver use a semaphore to access the phy during init */
5222 static int nv_mgmt_acquire_sema(struct net_device *dev)
5223 {
5224         struct fe_priv *np = netdev_priv(dev);
5225         u8 __iomem *base = get_hwbase(dev);
5226         int i;
5227         u32 tx_ctrl, mgmt_sema;
5228
5229         for (i = 0; i < 10; i++) {
5230                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5231                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5232                         break;
5233                 msleep(500);
5234         }
5235
5236         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5237                 return 0;
5238
5239         for (i = 0; i < 2; i++) {
5240                 tx_ctrl = readl(base + NvRegTransmitterControl);
5241                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5242                 writel(tx_ctrl, base + NvRegTransmitterControl);
5243
5244                 /* verify that semaphore was acquired */
5245                 tx_ctrl = readl(base + NvRegTransmitterControl);
5246                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5247                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5248                         np->mgmt_sema = 1;
5249                         return 1;
5250                 } else
5251                         udelay(50);
5252         }
5253
5254         return 0;
5255 }
5256
5257 static void nv_mgmt_release_sema(struct net_device *dev)
5258 {
5259         struct fe_priv *np = netdev_priv(dev);
5260         u8 __iomem *base = get_hwbase(dev);
5261         u32 tx_ctrl;
5262
5263         if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5264                 if (np->mgmt_sema) {
5265                         tx_ctrl = readl(base + NvRegTransmitterControl);
5266                         tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5267                         writel(tx_ctrl, base + NvRegTransmitterControl);
5268                 }
5269         }
5270 }
5271
5272
5273 static int nv_mgmt_get_version(struct net_device *dev)
5274 {
5275         struct fe_priv *np = netdev_priv(dev);
5276         u8 __iomem *base = get_hwbase(dev);
5277         u32 data_ready = readl(base + NvRegTransmitterControl);
5278         u32 data_ready2 = 0;
5279         unsigned long start;
5280         int ready = 0;
5281
5282         writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5283         writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5284         start = jiffies;
5285         while (time_before(jiffies, start + 5*HZ)) {
5286                 data_ready2 = readl(base + NvRegTransmitterControl);
5287                 if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5288                         ready = 1;
5289                         break;
5290                 }
5291                 schedule_timeout_uninterruptible(1);
5292         }
5293
5294         if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5295                 return 0;
5296
5297         np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5298
5299         return 1;
5300 }
5301
5302 static int nv_open(struct net_device *dev)
5303 {
5304         struct fe_priv *np = netdev_priv(dev);
5305         u8 __iomem *base = get_hwbase(dev);
5306         int ret = 1;
5307         int oom, i;
5308         u32 low;
5309
5310         /* power up phy */
5311         mii_rw(dev, np->phyaddr, MII_BMCR,
5312                mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5313
5314         nv_txrx_gate(dev, false);
5315         /* erase previous misconfiguration */
5316         if (np->driver_data & DEV_HAS_POWER_CNTRL)
5317                 nv_mac_reset(dev);
5318         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5319         writel(0, base + NvRegMulticastAddrB);
5320         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5321         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5322         writel(0, base + NvRegPacketFilterFlags);
5323
5324         writel(0, base + NvRegTransmitterControl);
5325         writel(0, base + NvRegReceiverControl);
5326
5327         writel(0, base + NvRegAdapterControl);
5328
5329         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5330                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5331
5332         /* initialize descriptor rings */
5333         set_bufsize(dev);
5334         oom = nv_init_ring(dev);
5335
5336         writel(0, base + NvRegLinkSpeed);
5337         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5338         nv_txrx_reset(dev);
5339         writel(0, base + NvRegUnknownSetupReg6);
5340
5341         np->in_shutdown = 0;
5342
5343         /* give hw rings */
5344         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5345         writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5346                 base + NvRegRingSizes);
5347
5348         writel(np->linkspeed, base + NvRegLinkSpeed);
5349         if (np->desc_ver == DESC_VER_1)
5350                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5351         else
5352                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5353         writel(np->txrxctl_bits, base + NvRegTxRxControl);
5354         writel(np->vlanctl_bits, base + NvRegVlanControl);
5355         pci_push(base);
5356         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5357         if (reg_delay(dev, NvRegUnknownSetupReg5,
5358                       NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5359                       NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5360                 netdev_info(dev,
5361                             "%s: SetupReg5, Bit 31 remained off\n", __func__);
5362
5363         writel(0, base + NvRegMIIMask);
5364         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5365         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5366
5367         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5368         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5369         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5370         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5371
5372         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5373
5374         get_random_bytes(&low, sizeof(low));
5375         low &= NVREG_SLOTTIME_MASK;
5376         if (np->desc_ver == DESC_VER_1) {
5377                 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5378         } else {
5379                 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5380                         /* setup legacy backoff */
5381                         writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5382                 } else {
5383                         writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5384                         nv_gear_backoff_reseed(dev);
5385                 }
5386         }
5387         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5388         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5389         if (poll_interval == -1) {
5390                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5391                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5392                 else
5393                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5394         } else
5395                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5396         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5397         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5398                         base + NvRegAdapterControl);
5399         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5400         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5401         if (np->wolenabled)
5402                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5403
5404         i = readl(base + NvRegPowerState);
5405         if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5406                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5407
5408         pci_push(base);
5409         udelay(10);
5410         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5411
5412         nv_disable_hw_interrupts(dev, np->irqmask);
5413         pci_push(base);
5414         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5415         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5416         pci_push(base);
5417
5418         if (nv_request_irq(dev, 0))
5419                 goto out_drain;
5420
5421         /* ask for interrupts */
5422         nv_enable_hw_interrupts(dev, np->irqmask);
5423
5424         spin_lock_irq(&np->lock);
5425         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5426         writel(0, base + NvRegMulticastAddrB);
5427         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5428         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5429         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5430         /* One manual link speed update: Interrupts are enabled, future link
5431          * speed changes cause interrupts and are handled by nv_link_irq().
5432          */
5433         {
5434                 u32 miistat;
5435                 miistat = readl(base + NvRegMIIStatus);
5436                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5437         }
5438         /* set linkspeed to invalid value, thus force nv_update_linkspeed
5439          * to init hw */
5440         np->linkspeed = 0;
5441         ret = nv_update_linkspeed(dev);
5442         nv_start_rxtx(dev);
5443         netif_start_queue(dev);
5444         nv_napi_enable(dev);
5445
5446         if (ret) {
5447                 netif_carrier_on(dev);
5448         } else {
5449                 netdev_info(dev, "no link during initialization\n");
5450                 netif_carrier_off(dev);
5451         }
5452         if (oom)
5453                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5454
5455         /* start statistics timer */
5456         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5457                 mod_timer(&np->stats_poll,
5458                         round_jiffies(jiffies + STATS_INTERVAL));
5459
5460         spin_unlock_irq(&np->lock);
5461
5462         /* If the loopback feature was set while the device was down, make sure
5463          * that it's set correctly now.
5464          */
5465         if (dev->features & NETIF_F_LOOPBACK)
5466                 nv_set_loopback(dev, dev->features);
5467
5468         return 0;
5469 out_drain:
5470         nv_drain_rxtx(dev);
5471         return ret;
5472 }
5473
5474 static int nv_close(struct net_device *dev)
5475 {
5476         struct fe_priv *np = netdev_priv(dev);
5477         u8 __iomem *base;
5478
5479         spin_lock_irq(&np->lock);
5480         np->in_shutdown = 1;
5481         spin_unlock_irq(&np->lock);
5482         nv_napi_disable(dev);
5483         synchronize_irq(np->pci_dev->irq);
5484
5485         del_timer_sync(&np->oom_kick);
5486         del_timer_sync(&np->nic_poll);
5487         del_timer_sync(&np->stats_poll);
5488
5489         netif_stop_queue(dev);
5490         spin_lock_irq(&np->lock);
5491         nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5492         nv_stop_rxtx(dev);
5493         nv_txrx_reset(dev);
5494
5495         /* disable interrupts on the nic or we will lock up */
5496         base = get_hwbase(dev);
5497         nv_disable_hw_interrupts(dev, np->irqmask);
5498         pci_push(base);
5499
5500         spin_unlock_irq(&np->lock);
5501
5502         nv_free_irq(dev);
5503
5504         nv_drain_rxtx(dev);
5505
5506         if (np->wolenabled || !phy_power_down) {
5507                 nv_txrx_gate(dev, false);
5508                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5509                 nv_start_rx(dev);
5510         } else {
5511                 /* power down phy */
5512                 mii_rw(dev, np->phyaddr, MII_BMCR,
5513                        mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5514                 nv_txrx_gate(dev, true);
5515         }
5516
5517         /* FIXME: power down nic */
5518
5519         return 0;
5520 }
5521
5522 static const struct net_device_ops nv_netdev_ops = {
5523         .ndo_open               = nv_open,
5524         .ndo_stop               = nv_close,
5525         .ndo_get_stats64        = nv_get_stats64,
5526         .ndo_start_xmit         = nv_start_xmit,
5527         .ndo_tx_timeout         = nv_tx_timeout,
5528         .ndo_change_mtu         = nv_change_mtu,
5529         .ndo_fix_features       = nv_fix_features,
5530         .ndo_set_features       = nv_set_features,
5531         .ndo_validate_addr      = eth_validate_addr,
5532         .ndo_set_mac_address    = nv_set_mac_address,
5533         .ndo_set_rx_mode        = nv_set_multicast,
5534 #ifdef CONFIG_NET_POLL_CONTROLLER
5535         .ndo_poll_controller    = nv_poll_controller,
5536 #endif
5537 };
5538
5539 static const struct net_device_ops nv_netdev_ops_optimized = {
5540         .ndo_open               = nv_open,
5541         .ndo_stop               = nv_close,
5542         .ndo_get_stats64        = nv_get_stats64,
5543         .ndo_start_xmit         = nv_start_xmit_optimized,
5544         .ndo_tx_timeout         = nv_tx_timeout,
5545         .ndo_change_mtu         = nv_change_mtu,
5546         .ndo_fix_features       = nv_fix_features,
5547         .ndo_set_features       = nv_set_features,
5548         .ndo_validate_addr      = eth_validate_addr,
5549         .ndo_set_mac_address    = nv_set_mac_address,
5550         .ndo_set_rx_mode        = nv_set_multicast,
5551 #ifdef CONFIG_NET_POLL_CONTROLLER
5552         .ndo_poll_controller    = nv_poll_controller,
5553 #endif
5554 };
5555
5556 static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5557 {
5558         struct net_device *dev;
5559         struct fe_priv *np;
5560         unsigned long addr;
5561         u8 __iomem *base;
5562         int err, i;
5563         u32 powerstate, txreg;
5564         u32 phystate_orig = 0, phystate;
5565         int phyinitialized = 0;
5566         static int printed_version;
5567
5568         if (!printed_version++)
5569                 pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5570                         FORCEDETH_VERSION);
5571
5572         dev = alloc_etherdev(sizeof(struct fe_priv));
5573         err = -ENOMEM;
5574         if (!dev)
5575                 goto out;
5576
5577         np = netdev_priv(dev);
5578         np->dev = dev;
5579         np->pci_dev = pci_dev;
5580         spin_lock_init(&np->lock);
5581         spin_lock_init(&np->hwstats_lock);
5582         SET_NETDEV_DEV(dev, &pci_dev->dev);
5583
5584         init_timer(&np->oom_kick);
5585         np->oom_kick.data = (unsigned long) dev;
5586         np->oom_kick.function = nv_do_rx_refill;        /* timer handler */
5587         init_timer(&np->nic_poll);
5588         np->nic_poll.data = (unsigned long) dev;
5589         np->nic_poll.function = nv_do_nic_poll; /* timer handler */
5590         init_timer_deferrable(&np->stats_poll);
5591         np->stats_poll.data = (unsigned long) dev;
5592         np->stats_poll.function = nv_do_stats_poll;     /* timer handler */
5593
5594         err = pci_enable_device(pci_dev);
5595         if (err)
5596                 goto out_free;
5597
5598         pci_set_master(pci_dev);
5599
5600         err = pci_request_regions(pci_dev, DRV_NAME);
5601         if (err < 0)
5602                 goto out_disable;
5603
5604         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5605                 np->register_size = NV_PCI_REGSZ_VER3;
5606         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5607                 np->register_size = NV_PCI_REGSZ_VER2;
5608         else
5609                 np->register_size = NV_PCI_REGSZ_VER1;
5610
5611         err = -EINVAL;
5612         addr = 0;
5613         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5614                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5615                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5616                         addr = pci_resource_start(pci_dev, i);
5617                         break;
5618                 }
5619         }
5620         if (i == DEVICE_COUNT_RESOURCE) {
5621                 dev_info(&pci_dev->dev, "Couldn't find register window\n");
5622                 goto out_relreg;
5623         }
5624
5625         /* copy of driver data */
5626         np->driver_data = id->driver_data;
5627         /* copy of device id */
5628         np->device_id = id->device;
5629
5630         /* handle different descriptor versions */
5631         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5632                 /* packet format 3: supports 40-bit addressing */
5633                 np->desc_ver = DESC_VER_3;
5634                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5635                 if (dma_64bit) {
5636                         if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5637                                 dev_info(&pci_dev->dev,
5638                                          "64-bit DMA failed, using 32-bit addressing\n");
5639                         else
5640                                 dev->features |= NETIF_F_HIGHDMA;
5641                         if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5642                                 dev_info(&pci_dev->dev,
5643                                          "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5644                         }
5645                 }
5646         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5647                 /* packet format 2: supports jumbo frames */
5648                 np->desc_ver = DESC_VER_2;
5649                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5650         } else {
5651                 /* original packet format */
5652                 np->desc_ver = DESC_VER_1;
5653                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5654         }
5655
5656         np->pkt_limit = NV_PKTLIMIT_1;
5657         if (id->driver_data & DEV_HAS_LARGEDESC)
5658                 np->pkt_limit = NV_PKTLIMIT_2;
5659
5660         if (id->driver_data & DEV_HAS_CHECKSUM) {
5661                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5662                 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5663                         NETIF_F_TSO | NETIF_F_RXCSUM;
5664         }
5665
5666         np->vlanctl_bits = 0;
5667         if (id->driver_data & DEV_HAS_VLAN) {
5668                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5669                 dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
5670         }
5671
5672         dev->features |= dev->hw_features;
5673
5674         /* Add loopback capability to the device. */
5675         dev->hw_features |= NETIF_F_LOOPBACK;
5676
5677         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5678         if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5679             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5680             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5681                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5682         }
5683
5684         err = -ENOMEM;
5685         np->base = ioremap(addr, np->register_size);
5686         if (!np->base)
5687                 goto out_relreg;
5688
5689         np->rx_ring_size = RX_RING_DEFAULT;
5690         np->tx_ring_size = TX_RING_DEFAULT;
5691
5692         if (!nv_optimized(np)) {
5693                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5694                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5695                                         &np->ring_addr);
5696                 if (!np->rx_ring.orig)
5697                         goto out_unmap;
5698                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5699         } else {
5700                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5701                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5702                                         &np->ring_addr);
5703                 if (!np->rx_ring.ex)
5704                         goto out_unmap;
5705                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5706         }
5707         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5708         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5709         if (!np->rx_skb || !np->tx_skb)
5710                 goto out_freering;
5711
5712         if (!nv_optimized(np))
5713                 dev->netdev_ops = &nv_netdev_ops;
5714         else
5715                 dev->netdev_ops = &nv_netdev_ops_optimized;
5716
5717         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5718         SET_ETHTOOL_OPS(dev, &ops);
5719         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5720
5721         pci_set_drvdata(pci_dev, dev);
5722
5723         /* read the mac address */
5724         base = get_hwbase(dev);
5725         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5726         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5727
5728         /* check the workaround bit for correct mac address order */
5729         txreg = readl(base + NvRegTransmitPoll);
5730         if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5731                 /* mac address is already in correct order */
5732                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5733                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5734                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5735                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5736                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5737                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5738         } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5739                 /* mac address is already in correct order */
5740                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5741                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5742                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5743                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5744                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5745                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5746                 /*
5747                  * Set orig mac address back to the reversed version.
5748                  * This flag will be cleared during low power transition.
5749                  * Therefore, we should always put back the reversed address.
5750                  */
5751                 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5752                         (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5753                 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5754         } else {
5755                 /* need to reverse mac address to correct order */
5756                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5757                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5758                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5759                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5760                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5761                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5762                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5763                 dev_dbg(&pci_dev->dev,
5764                         "%s: set workaround bit for reversed mac addr\n",
5765                         __func__);
5766         }
5767
5768         if (!is_valid_ether_addr(dev->dev_addr)) {
5769                 /*
5770                  * Bad mac address. At least one bios sets the mac address
5771                  * to 01:23:45:67:89:ab
5772                  */
5773                 dev_err(&pci_dev->dev,
5774                         "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5775                         dev->dev_addr);
5776                 eth_hw_addr_random(dev);
5777                 dev_err(&pci_dev->dev,
5778                         "Using random MAC address: %pM\n", dev->dev_addr);
5779         }
5780
5781         /* set mac address */
5782         nv_copy_mac_to_hw(dev);
5783
5784         /* disable WOL */
5785         writel(0, base + NvRegWakeUpFlags);
5786         np->wolenabled = 0;
5787         device_set_wakeup_enable(&pci_dev->dev, false);
5788
5789         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5790
5791                 /* take phy and nic out of low power mode */
5792                 powerstate = readl(base + NvRegPowerState2);
5793                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5794                 if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5795                     pci_dev->revision >= 0xA3)
5796                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5797                 writel(powerstate, base + NvRegPowerState2);
5798         }
5799
5800         if (np->desc_ver == DESC_VER_1)
5801                 np->tx_flags = NV_TX_VALID;
5802         else
5803                 np->tx_flags = NV_TX2_VALID;
5804
5805         np->msi_flags = 0;
5806         if ((id->driver_data & DEV_HAS_MSI) && msi)
5807                 np->msi_flags |= NV_MSI_CAPABLE;
5808
5809         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5810                 /* msix has had reported issues when modifying irqmask
5811                    as in the case of napi, therefore, disable for now
5812                 */
5813 #if 0
5814                 np->msi_flags |= NV_MSI_X_CAPABLE;
5815 #endif
5816         }
5817
5818         if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5819                 np->irqmask = NVREG_IRQMASK_CPU;
5820                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5821                         np->msi_flags |= 0x0001;
5822         } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5823                    !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5824                 /* start off in throughput mode */
5825                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5826                 /* remove support for msix mode */
5827                 np->msi_flags &= ~NV_MSI_X_CAPABLE;
5828         } else {
5829                 optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5830                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5831                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5832                         np->msi_flags |= 0x0003;
5833         }
5834
5835         if (id->driver_data & DEV_NEED_TIMERIRQ)
5836                 np->irqmask |= NVREG_IRQ_TIMER;
5837         if (id->driver_data & DEV_NEED_LINKTIMER) {
5838                 np->need_linktimer = 1;
5839                 np->link_timeout = jiffies + LINK_TIMEOUT;
5840         } else {
5841                 np->need_linktimer = 0;
5842         }
5843
5844         /* Limit the number of tx's outstanding for hw bug */
5845         if (id->driver_data & DEV_NEED_TX_LIMIT) {
5846                 np->tx_limit = 1;
5847                 if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5848                     pci_dev->revision >= 0xA2)
5849                         np->tx_limit = 0;
5850         }
5851
5852         /* clear phy state and temporarily halt phy interrupts */
5853         writel(0, base + NvRegMIIMask);
5854         phystate = readl(base + NvRegAdapterControl);
5855         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5856                 phystate_orig = 1;
5857                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5858                 writel(phystate, base + NvRegAdapterControl);
5859         }
5860         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5861
5862         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5863                 /* management unit running on the mac? */
5864                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5865                     (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5866                     nv_mgmt_acquire_sema(dev) &&
5867                     nv_mgmt_get_version(dev)) {
5868                         np->mac_in_use = 1;
5869                         if (np->mgmt_version > 0)
5870                                 np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5871                         /* management unit setup the phy already? */
5872                         if (np->mac_in_use &&
5873                             ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5874                              NVREG_XMITCTL_SYNC_PHY_INIT)) {
5875                                 /* phy is inited by mgmt unit */
5876                                 phyinitialized = 1;
5877                         } else {
5878                                 /* we need to init the phy */
5879                         }
5880                 }
5881         }
5882
5883         /* find a suitable phy */
5884         for (i = 1; i <= 32; i++) {
5885                 int id1, id2;
5886                 int phyaddr = i & 0x1F;
5887
5888                 spin_lock_irq(&np->lock);
5889                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5890                 spin_unlock_irq(&np->lock);
5891                 if (id1 < 0 || id1 == 0xffff)
5892                         continue;
5893                 spin_lock_irq(&np->lock);
5894                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5895                 spin_unlock_irq(&np->lock);
5896                 if (id2 < 0 || id2 == 0xffff)
5897                         continue;
5898
5899                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5900                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5901                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5902                 np->phyaddr = phyaddr;
5903                 np->phy_oui = id1 | id2;
5904
5905                 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5906                 if (np->phy_oui == PHY_OUI_REALTEK2)
5907                         np->phy_oui = PHY_OUI_REALTEK;
5908                 /* Setup phy revision for Realtek */
5909                 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5910                         np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5911
5912                 break;
5913         }
5914         if (i == 33) {
5915                 dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5916                 goto out_error;
5917         }
5918
5919         if (!phyinitialized) {
5920                 /* reset it */
5921                 phy_init(dev);
5922         } else {
5923                 /* see if it is a gigabit phy */
5924                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5925                 if (mii_status & PHY_GIGABIT)
5926                         np->gigabit = PHY_GIGABIT;
5927         }
5928
5929         /* set default link speed settings */
5930         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5931         np->duplex = 0;
5932         np->autoneg = 1;
5933
5934         err = register_netdev(dev);
5935         if (err) {
5936                 dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5937                 goto out_error;
5938         }
5939
5940         netif_carrier_off(dev);
5941
5942         /* Some NICs freeze when TX pause is enabled while NIC is
5943          * down, and this stays across warm reboots. The sequence
5944          * below should be enough to recover from that state.
5945          */
5946         nv_update_pause(dev, 0);
5947         nv_start_tx(dev);
5948         nv_stop_tx(dev);
5949
5950         if (id->driver_data & DEV_HAS_VLAN)
5951                 nv_vlan_mode(dev, dev->features);
5952
5953         dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
5954                  dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
5955
5956         dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
5957                  dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
5958                  dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
5959                         "csum " : "",
5960                  dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
5961                         "vlan " : "",
5962                  dev->features & (NETIF_F_LOOPBACK) ?
5963                         "loopback " : "",
5964                  id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
5965                  id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
5966                  id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
5967                  np->gigabit == PHY_GIGABIT ? "gbit " : "",
5968                  np->need_linktimer ? "lnktim " : "",
5969                  np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
5970                  np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
5971                  np->desc_ver);
5972
5973         return 0;
5974
5975 out_error:
5976         if (phystate_orig)
5977                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5978         pci_set_drvdata(pci_dev, NULL);
5979 out_freering:
5980         free_rings(dev);
5981 out_unmap:
5982         iounmap(get_hwbase(dev));
5983 out_relreg:
5984         pci_release_regions(pci_dev);
5985 out_disable:
5986         pci_disable_device(pci_dev);
5987 out_free:
5988         free_netdev(dev);
5989 out:
5990         return err;
5991 }
5992
5993 static void nv_restore_phy(struct net_device *dev)
5994 {
5995         struct fe_priv *np = netdev_priv(dev);
5996         u16 phy_reserved, mii_control;
5997
5998         if (np->phy_oui == PHY_OUI_REALTEK &&
5999             np->phy_model == PHY_MODEL_REALTEK_8201 &&
6000             phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6001                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6002                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6003                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6004                 phy_reserved |= PHY_REALTEK_INIT8;
6005                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6006                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6007
6008                 /* restart auto negotiation */
6009                 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6010                 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6011                 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6012         }
6013 }
6014
6015 static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6016 {
6017         struct net_device *dev = pci_get_drvdata(pci_dev);
6018         struct fe_priv *np = netdev_priv(dev);
6019         u8 __iomem *base = get_hwbase(dev);
6020
6021         /* special op: write back the misordered MAC address - otherwise
6022          * the next nv_probe would see a wrong address.
6023          */
6024         writel(np->orig_mac[0], base + NvRegMacAddrA);
6025         writel(np->orig_mac[1], base + NvRegMacAddrB);
6026         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6027                base + NvRegTransmitPoll);
6028 }
6029
6030 static void nv_remove(struct pci_dev *pci_dev)
6031 {
6032         struct net_device *dev = pci_get_drvdata(pci_dev);
6033
6034         unregister_netdev(dev);
6035
6036         nv_restore_mac_addr(pci_dev);
6037
6038         /* restore any phy related changes */
6039         nv_restore_phy(dev);
6040
6041         nv_mgmt_release_sema(dev);
6042
6043         /* free all structures */
6044         free_rings(dev);
6045         iounmap(get_hwbase(dev));
6046         pci_release_regions(pci_dev);
6047         pci_disable_device(pci_dev);
6048         free_netdev(dev);
6049         pci_set_drvdata(pci_dev, NULL);
6050 }
6051
6052 #ifdef CONFIG_PM_SLEEP
6053 static int nv_suspend(struct device *device)
6054 {
6055         struct pci_dev *pdev = to_pci_dev(device);
6056         struct net_device *dev = pci_get_drvdata(pdev);
6057         struct fe_priv *np = netdev_priv(dev);
6058         u8 __iomem *base = get_hwbase(dev);
6059         int i;
6060
6061         if (netif_running(dev)) {
6062                 /* Gross. */
6063                 nv_close(dev);
6064         }
6065         netif_device_detach(dev);
6066
6067         /* save non-pci configuration space */
6068         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6069                 np->saved_config_space[i] = readl(base + i*sizeof(u32));
6070
6071         return 0;
6072 }
6073
6074 static int nv_resume(struct device *device)
6075 {
6076         struct pci_dev *pdev = to_pci_dev(device);
6077         struct net_device *dev = pci_get_drvdata(pdev);
6078         struct fe_priv *np = netdev_priv(dev);
6079         u8 __iomem *base = get_hwbase(dev);
6080         int i, rc = 0;
6081
6082         /* restore non-pci configuration space */
6083         for (i = 0; i <= np->register_size/sizeof(u32); i++)
6084                 writel(np->saved_config_space[i], base+i*sizeof(u32));
6085
6086         if (np->driver_data & DEV_NEED_MSI_FIX)
6087                 pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6088
6089         /* restore phy state, including autoneg */
6090         phy_init(dev);
6091
6092         netif_device_attach(dev);
6093         if (netif_running(dev)) {
6094                 rc = nv_open(dev);
6095                 nv_set_multicast(dev);
6096         }
6097         return rc;
6098 }
6099
6100 static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6101 #define NV_PM_OPS (&nv_pm_ops)
6102
6103 #else
6104 #define NV_PM_OPS NULL
6105 #endif /* CONFIG_PM_SLEEP */
6106
6107 #ifdef CONFIG_PM
6108 static void nv_shutdown(struct pci_dev *pdev)
6109 {
6110         struct net_device *dev = pci_get_drvdata(pdev);
6111         struct fe_priv *np = netdev_priv(dev);
6112
6113         if (netif_running(dev))
6114                 nv_close(dev);
6115
6116         /*
6117          * Restore the MAC so a kernel started by kexec won't get confused.
6118          * If we really go for poweroff, we must not restore the MAC,
6119          * otherwise the MAC for WOL will be reversed at least on some boards.
6120          */
6121         if (system_state != SYSTEM_POWER_OFF)
6122                 nv_restore_mac_addr(pdev);
6123
6124         pci_disable_device(pdev);
6125         /*
6126          * Apparently it is not possible to reinitialise from D3 hot,
6127          * only put the device into D3 if we really go for poweroff.
6128          */
6129         if (system_state == SYSTEM_POWER_OFF) {
6130                 pci_wake_from_d3(pdev, np->wolenabled);
6131                 pci_set_power_state(pdev, PCI_D3hot);
6132         }
6133 }
6134 #else
6135 #define nv_shutdown NULL
6136 #endif /* CONFIG_PM */
6137
6138 static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
6139         {       /* nForce Ethernet Controller */
6140                 PCI_DEVICE(0x10DE, 0x01C3),
6141                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6142         },
6143         {       /* nForce2 Ethernet Controller */
6144                 PCI_DEVICE(0x10DE, 0x0066),
6145                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6146         },
6147         {       /* nForce3 Ethernet Controller */
6148                 PCI_DEVICE(0x10DE, 0x00D6),
6149                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6150         },
6151         {       /* nForce3 Ethernet Controller */
6152                 PCI_DEVICE(0x10DE, 0x0086),
6153                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6154         },
6155         {       /* nForce3 Ethernet Controller */
6156                 PCI_DEVICE(0x10DE, 0x008C),
6157                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6158         },
6159         {       /* nForce3 Ethernet Controller */
6160                 PCI_DEVICE(0x10DE, 0x00E6),
6161                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6162         },
6163         {       /* nForce3 Ethernet Controller */
6164                 PCI_DEVICE(0x10DE, 0x00DF),
6165                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6166         },
6167         {       /* CK804 Ethernet Controller */
6168                 PCI_DEVICE(0x10DE, 0x0056),
6169                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6170         },
6171         {       /* CK804 Ethernet Controller */
6172                 PCI_DEVICE(0x10DE, 0x0057),
6173                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6174         },
6175         {       /* MCP04 Ethernet Controller */
6176                 PCI_DEVICE(0x10DE, 0x0037),
6177                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6178         },
6179         {       /* MCP04 Ethernet Controller */
6180                 PCI_DEVICE(0x10DE, 0x0038),
6181                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6182         },
6183         {       /* MCP51 Ethernet Controller */
6184                 PCI_DEVICE(0x10DE, 0x0268),
6185                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6186         },
6187         {       /* MCP51 Ethernet Controller */
6188                 PCI_DEVICE(0x10DE, 0x0269),
6189                 .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6190         },
6191         {       /* MCP55 Ethernet Controller */
6192                 PCI_DEVICE(0x10DE, 0x0372),
6193                 .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,
6194         },
6195         {       /* MCP55 Ethernet Controller */
6196                 PCI_DEVICE(0x10DE, 0x0373),
6197                 .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,
6198         },
6199         {       /* MCP61 Ethernet Controller */
6200                 PCI_DEVICE(0x10DE, 0x03E5),
6201                 .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,
6202         },
6203         {       /* MCP61 Ethernet Controller */
6204                 PCI_DEVICE(0x10DE, 0x03E6),
6205                 .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,
6206         },
6207         {       /* MCP61 Ethernet Controller */
6208                 PCI_DEVICE(0x10DE, 0x03EE),
6209                 .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,
6210         },
6211         {       /* MCP61 Ethernet Controller */
6212                 PCI_DEVICE(0x10DE, 0x03EF),
6213                 .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,
6214         },
6215         {       /* MCP65 Ethernet Controller */
6216                 PCI_DEVICE(0x10DE, 0x0450),
6217                 .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,
6218         },
6219         {       /* MCP65 Ethernet Controller */
6220                 PCI_DEVICE(0x10DE, 0x0451),
6221                 .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,
6222         },
6223         {       /* MCP65 Ethernet Controller */
6224                 PCI_DEVICE(0x10DE, 0x0452),
6225                 .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,
6226         },
6227         {       /* MCP65 Ethernet Controller */
6228                 PCI_DEVICE(0x10DE, 0x0453),
6229                 .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,
6230         },
6231         {       /* MCP67 Ethernet Controller */
6232                 PCI_DEVICE(0x10DE, 0x054C),
6233                 .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,
6234         },
6235         {       /* MCP67 Ethernet Controller */
6236                 PCI_DEVICE(0x10DE, 0x054D),
6237                 .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,
6238         },
6239         {       /* MCP67 Ethernet Controller */
6240                 PCI_DEVICE(0x10DE, 0x054E),
6241                 .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,
6242         },
6243         {       /* MCP67 Ethernet Controller */
6244                 PCI_DEVICE(0x10DE, 0x054F),
6245                 .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,
6246         },
6247         {       /* MCP73 Ethernet Controller */
6248                 PCI_DEVICE(0x10DE, 0x07DC),
6249                 .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,
6250         },
6251         {       /* MCP73 Ethernet Controller */
6252                 PCI_DEVICE(0x10DE, 0x07DD),
6253                 .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,
6254         },
6255         {       /* MCP73 Ethernet Controller */
6256                 PCI_DEVICE(0x10DE, 0x07DE),
6257                 .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,
6258         },
6259         {       /* MCP73 Ethernet Controller */
6260                 PCI_DEVICE(0x10DE, 0x07DF),
6261                 .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,
6262         },
6263         {       /* MCP77 Ethernet Controller */
6264                 PCI_DEVICE(0x10DE, 0x0760),
6265                 .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,
6266         },
6267         {       /* MCP77 Ethernet Controller */
6268                 PCI_DEVICE(0x10DE, 0x0761),
6269                 .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,
6270         },
6271         {       /* MCP77 Ethernet Controller */
6272                 PCI_DEVICE(0x10DE, 0x0762),
6273                 .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,
6274         },
6275         {       /* MCP77 Ethernet Controller */
6276                 PCI_DEVICE(0x10DE, 0x0763),
6277                 .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,
6278         },
6279         {       /* MCP79 Ethernet Controller */
6280                 PCI_DEVICE(0x10DE, 0x0AB0),
6281                 .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,
6282         },
6283         {       /* MCP79 Ethernet Controller */
6284                 PCI_DEVICE(0x10DE, 0x0AB1),
6285                 .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,
6286         },
6287         {       /* MCP79 Ethernet Controller */
6288                 PCI_DEVICE(0x10DE, 0x0AB2),
6289                 .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,
6290         },
6291         {       /* MCP79 Ethernet Controller */
6292                 PCI_DEVICE(0x10DE, 0x0AB3),
6293                 .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,
6294         },
6295         {       /* MCP89 Ethernet Controller */
6296                 PCI_DEVICE(0x10DE, 0x0D7D),
6297                 .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,
6298         },
6299         {0,},
6300 };
6301
6302 static struct pci_driver driver = {
6303         .name           = DRV_NAME,
6304         .id_table       = pci_tbl,
6305         .probe          = nv_probe,
6306         .remove         = nv_remove,
6307         .shutdown       = nv_shutdown,
6308         .driver.pm      = NV_PM_OPS,
6309 };
6310
6311 static int __init init_nic(void)
6312 {
6313         return pci_register_driver(&driver);
6314 }
6315
6316 static void __exit exit_nic(void)
6317 {
6318         pci_unregister_driver(&driver);
6319 }
6320
6321 module_param(max_interrupt_work, int, 0);
6322 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6323 module_param(optimization_mode, int, 0);
6324 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.");
6325 module_param(poll_interval, int, 0);
6326 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.");
6327 module_param(msi, int, 0);
6328 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6329 module_param(msix, int, 0);
6330 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6331 module_param(dma_64bit, int, 0);
6332 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6333 module_param(phy_cross, int, 0);
6334 MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6335 module_param(phy_power_down, int, 0);
6336 MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6337 module_param(debug_tx_timeout, bool, 0);
6338 MODULE_PARM_DESC(debug_tx_timeout,
6339                  "Dump tx related registers and ring when tx_timeout happens");
6340
6341 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6342 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6343 MODULE_LICENSE("GPL");
6344
6345 MODULE_DEVICE_TABLE(pci, pci_tbl);
6346
6347 module_init(init_nic);
6348 module_exit(exit_nic);