drivers/net/forcedeth.c

   1 /*
   2  * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
   3  *
   4  * Note: This driver is a cleanroom reimplementation based on reverse
   5  *      engineered documentation written by Carl-Daniel Hailfinger
   6  *      and Andrew de Quincey.
   7  *
   8  * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
   9  * trademarks of NVIDIA Corporation in the United States and other
  10  * countries.
  11  *
  12  * Copyright (C) 2003,4,5 Manfred Spraul
  13  * Copyright (C) 2004 Andrew de Quincey (wol support)
  14  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  15  *              IRQ rate fixes, bigendian fixes, cleanups, verification)
  16  * Copyright (c) 2004,2005,2006,2007,2008 NVIDIA Corporation
  17  *
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License as published by
  20  * the Free Software Foundation; either version 2 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  31  *
  32  * 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 #define FORCEDETH_VERSION               "0.61"
  43 #define DRV_NAME                        "forcedeth"
  44
  45 #include <linux/module.h>
  46 #include <linux/types.h>
  47 #include <linux/pci.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/netdevice.h>
  50 #include <linux/etherdevice.h>
  51 #include <linux/delay.h>
  52 #include <linux/spinlock.h>
  53 #include <linux/ethtool.h>
  54 #include <linux/timer.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/mii.h>
  57 #include <linux/random.h>
  58 #include <linux/init.h>
  59 #include <linux/if_vlan.h>
  60 #include <linux/dma-mapping.h>
  61
  62 #include <asm/irq.h>
  63 #include <asm/io.h>
  64 #include <asm/uaccess.h>
  65 #include <asm/system.h>
  66
  67 #if 0
  68 #define dprintk                 printk
  69 #else
  70 #define dprintk(x...)           do { } while (0)
  71 #endif
  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          0x00001  /* set the timer irq flag in the irq mask */
  81 #define DEV_NEED_LINKTIMER         0x00002  /* poll link settings. Relies on the timer irq */
  82 #define DEV_HAS_LARGEDESC          0x00004  /* device supports jumbo frames and needs packet format 2 */
  83 #define DEV_HAS_HIGH_DMA           0x00008  /* device supports 64bit dma */
  84 #define DEV_HAS_CHECKSUM           0x00010  /* device supports tx and rx checksum offloads */
  85 #define DEV_HAS_VLAN               0x00020  /* device supports vlan tagging and striping */
  86 #define DEV_HAS_MSI                0x00040  /* device supports MSI */
  87 #define DEV_HAS_MSI_X              0x00080  /* device supports MSI-X */
  88 #define DEV_HAS_POWER_CNTRL        0x00100  /* device supports power savings */
  89 #define DEV_HAS_STATISTICS_V1      0x00200  /* device supports hw statistics version 1 */
  90 #define DEV_HAS_STATISTICS_V2      0x00400  /* device supports hw statistics version 2 */
  91 #define DEV_HAS_TEST_EXTENDED      0x00800  /* device supports extended diagnostic test */
  92 #define DEV_HAS_MGMT_UNIT          0x01000  /* device supports management unit */
  93 #define DEV_HAS_CORRECT_MACADDR    0x02000  /* device supports correct mac address order */
  94 #define DEV_HAS_COLLISION_FIX      0x04000  /* device supports tx collision fix */
  95 #define DEV_HAS_PAUSEFRAME_TX_V1   0x08000  /* device supports tx pause frames version 1 */
  96 #define DEV_HAS_PAUSEFRAME_TX_V2   0x10000  /* device supports tx pause frames version 2 */
  97 #define DEV_HAS_PAUSEFRAME_TX_V3   0x20000  /* device supports tx pause frames version 3 */
  98 #define DEV_NEED_TX_LIMIT          0x40000  /* device needs to limit tx */
  99 #define DEV_HAS_GEAR_MODE          0x80000  /* device supports gear mode */
 100
 101 enum {
 102         NvRegIrqStatus = 0x000,
 103 #define NVREG_IRQSTAT_MIIEVENT  0x040
 104 #define NVREG_IRQSTAT_MASK              0x81ff
 105         NvRegIrqMask = 0x004,
 106 #define NVREG_IRQ_RX_ERROR              0x0001
 107 #define NVREG_IRQ_RX                    0x0002
 108 #define NVREG_IRQ_RX_NOBUF              0x0004
 109 #define NVREG_IRQ_TX_ERR                0x0008
 110 #define NVREG_IRQ_TX_OK                 0x0010
 111 #define NVREG_IRQ_TIMER                 0x0020
 112 #define NVREG_IRQ_LINK                  0x0040
 113 #define NVREG_IRQ_RX_FORCED             0x0080
 114 #define NVREG_IRQ_TX_FORCED             0x0100
 115 #define NVREG_IRQ_RECOVER_ERROR         0x8000
 116 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 117 #define NVREG_IRQMASK_CPU               0x0060
 118 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 119 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 120 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 121
 122 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 123                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
 124                                         NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR))
 125
 126         NvRegUnknownSetupReg6 = 0x008,
 127 #define NVREG_UNKSETUP6_VAL             3
 128
 129 /*
 130  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 131  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 132  */
 133         NvRegPollingInterval = 0x00c,
 134 #define NVREG_POLL_DEFAULT_THROUGHPUT   970 /* backup tx cleanup if loop max reached */
 135 #define NVREG_POLL_DEFAULT_CPU  13
 136         NvRegMSIMap0 = 0x020,
 137         NvRegMSIMap1 = 0x024,
 138         NvRegMSIIrqMask = 0x030,
 139 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 140         NvRegMisc1 = 0x080,
 141 #define NVREG_MISC1_PAUSE_TX    0x01
 142 #define NVREG_MISC1_HD          0x02
 143 #define NVREG_MISC1_FORCE       0x3b0f3c
 144
 145         NvRegMacReset = 0x34,
 146 #define NVREG_MAC_RESET_ASSERT  0x0F3
 147         NvRegTransmitterControl = 0x084,
 148 #define NVREG_XMITCTL_START     0x01
 149 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 150 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 151 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 152 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 153 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 154 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 155 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 156 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 157 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 158 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
 159         NvRegTransmitterStatus = 0x088,
 160 #define NVREG_XMITSTAT_BUSY     0x01
 161
 162         NvRegPacketFilterFlags = 0x8c,
 163 #define NVREG_PFF_PAUSE_RX      0x08
 164 #define NVREG_PFF_ALWAYS        0x7F0000
 165 #define NVREG_PFF_PROMISC       0x80
 166 #define NVREG_PFF_MYADDR        0x20
 167 #define NVREG_PFF_LOOPBACK      0x10
 168
 169         NvRegOffloadConfig = 0x90,
 170 #define NVREG_OFFLOAD_HOMEPHY   0x601
 171 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 172         NvRegReceiverControl = 0x094,
 173 #define NVREG_RCVCTL_START      0x01
 174 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
 175         NvRegReceiverStatus = 0x98,
 176 #define NVREG_RCVSTAT_BUSY      0x01
 177
 178         NvRegSlotTime = 0x9c,
 179 #define NVREG_SLOTTIME_LEGBF_ENABLED    0x80000000
 180 #define NVREG_SLOTTIME_10_100_FULL      0x00007f00
 181 #define NVREG_SLOTTIME_1000_FULL        0x0003ff00
 182 #define NVREG_SLOTTIME_HALF             0x0000ff00
 183 #define NVREG_SLOTTIME_DEFAULT          0x00007f00
 184 #define NVREG_SLOTTIME_MASK             0x000000ff
 185
 186         NvRegTxDeferral = 0xA0,
 187 #define NVREG_TX_DEFERRAL_DEFAULT               0x15050f
 188 #define NVREG_TX_DEFERRAL_RGMII_10_100          0x16070f
 189 #define NVREG_TX_DEFERRAL_RGMII_1000            0x14050f
 190 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_10      0x16190f
 191 #define NVREG_TX_DEFERRAL_RGMII_STRETCH_100     0x16300f
 192 #define NVREG_TX_DEFERRAL_MII_STRETCH           0x152000
 193         NvRegRxDeferral = 0xA4,
 194 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 195         NvRegMacAddrA = 0xA8,
 196         NvRegMacAddrB = 0xAC,
 197         NvRegMulticastAddrA = 0xB0,
 198 #define NVREG_MCASTADDRA_FORCE  0x01
 199         NvRegMulticastAddrB = 0xB4,
 200         NvRegMulticastMaskA = 0xB8,
 201 #define NVREG_MCASTMASKA_NONE           0xffffffff
 202         NvRegMulticastMaskB = 0xBC,
 203 #define NVREG_MCASTMASKB_NONE           0xffff
 204
 205         NvRegPhyInterface = 0xC0,
 206 #define PHY_RGMII               0x10000000
 207         NvRegBackOffControl = 0xC4,
 208 #define NVREG_BKOFFCTRL_DEFAULT                 0x70000000
 209 #define NVREG_BKOFFCTRL_SEED_MASK               0x000003ff
 210 #define NVREG_BKOFFCTRL_SELECT                  24
 211 #define NVREG_BKOFFCTRL_GEAR                    12
 212
 213         NvRegTxRingPhysAddr = 0x100,
 214         NvRegRxRingPhysAddr = 0x104,
 215         NvRegRingSizes = 0x108,
 216 #define NVREG_RINGSZ_TXSHIFT 0
 217 #define NVREG_RINGSZ_RXSHIFT 16
 218         NvRegTransmitPoll = 0x10c,
 219 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 220         NvRegLinkSpeed = 0x110,
 221 #define NVREG_LINKSPEED_FORCE 0x10000
 222 #define NVREG_LINKSPEED_10      1000
 223 #define NVREG_LINKSPEED_100     100
 224 #define NVREG_LINKSPEED_1000    50
 225 #define NVREG_LINKSPEED_MASK    (0xFFF)
 226         NvRegUnknownSetupReg5 = 0x130,
 227 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 228         NvRegTxWatermark = 0x13c,
 229 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 230 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 231 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 232         NvRegTxRxControl = 0x144,
 233 #define NVREG_TXRXCTL_KICK      0x0001
 234 #define NVREG_TXRXCTL_BIT1      0x0002
 235 #define NVREG_TXRXCTL_BIT2      0x0004
 236 #define NVREG_TXRXCTL_IDLE      0x0008
 237 #define NVREG_TXRXCTL_RESET     0x0010
 238 #define NVREG_TXRXCTL_RXCHECK   0x0400
 239 #define NVREG_TXRXCTL_DESC_1    0
 240 #define NVREG_TXRXCTL_DESC_2    0x002100
 241 #define NVREG_TXRXCTL_DESC_3    0xc02200
 242 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 243 #define NVREG_TXRXCTL_VLANINS   0x00080
 244         NvRegTxRingPhysAddrHigh = 0x148,
 245         NvRegRxRingPhysAddrHigh = 0x14C,
 246         NvRegTxPauseFrame = 0x170,
 247 #define NVREG_TX_PAUSEFRAME_DISABLE     0x0fff0080
 248 #define NVREG_TX_PAUSEFRAME_ENABLE_V1   0x01800010
 249 #define NVREG_TX_PAUSEFRAME_ENABLE_V2   0x056003f0
 250 #define NVREG_TX_PAUSEFRAME_ENABLE_V3   0x09f00880
 251         NvRegMIIStatus = 0x180,
 252 #define NVREG_MIISTAT_ERROR             0x0001
 253 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 254 #define NVREG_MIISTAT_MASK_RW           0x0007
 255 #define NVREG_MIISTAT_MASK_ALL          0x000f
 256         NvRegMIIMask = 0x184,
 257 #define NVREG_MII_LINKCHANGE            0x0008
 258
 259         NvRegAdapterControl = 0x188,
 260 #define NVREG_ADAPTCTL_START    0x02
 261 #define NVREG_ADAPTCTL_LINKUP   0x04
 262 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 263 #define NVREG_ADAPTCTL_RUNNING  0x100000
 264 #define NVREG_ADAPTCTL_PHYSHIFT 24
 265         NvRegMIISpeed = 0x18c,
 266 #define NVREG_MIISPEED_BIT8     (1<<8)
 267 #define NVREG_MIIDELAY  5
 268         NvRegMIIControl = 0x190,
 269 #define NVREG_MIICTL_INUSE      0x08000
 270 #define NVREG_MIICTL_WRITE      0x00400
 271 #define NVREG_MIICTL_ADDRSHIFT  5
 272         NvRegMIIData = 0x194,
 273         NvRegWakeUpFlags = 0x200,
 274 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 275 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 276 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 277 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 278 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 279 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 280 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 281 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 282 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 283 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 284 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 285
 286         NvRegPatternCRC = 0x204,
 287         NvRegPatternMask = 0x208,
 288         NvRegPowerCap = 0x268,
 289 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 290 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 291 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 292         NvRegPowerState = 0x26c,
 293 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 294 #define NVREG_POWERSTATE_VALID          0x0100
 295 #define NVREG_POWERSTATE_MASK           0x0003
 296 #define NVREG_POWERSTATE_D0             0x0000
 297 #define NVREG_POWERSTATE_D1             0x0001
 298 #define NVREG_POWERSTATE_D2             0x0002
 299 #define NVREG_POWERSTATE_D3             0x0003
 300         NvRegTxCnt = 0x280,
 301         NvRegTxZeroReXmt = 0x284,
 302         NvRegTxOneReXmt = 0x288,
 303         NvRegTxManyReXmt = 0x28c,
 304         NvRegTxLateCol = 0x290,
 305         NvRegTxUnderflow = 0x294,
 306         NvRegTxLossCarrier = 0x298,
 307         NvRegTxExcessDef = 0x29c,
 308         NvRegTxRetryErr = 0x2a0,
 309         NvRegRxFrameErr = 0x2a4,
 310         NvRegRxExtraByte = 0x2a8,
 311         NvRegRxLateCol = 0x2ac,
 312         NvRegRxRunt = 0x2b0,
 313         NvRegRxFrameTooLong = 0x2b4,
 314         NvRegRxOverflow = 0x2b8,
 315         NvRegRxFCSErr = 0x2bc,
 316         NvRegRxFrameAlignErr = 0x2c0,
 317         NvRegRxLenErr = 0x2c4,
 318         NvRegRxUnicast = 0x2c8,
 319         NvRegRxMulticast = 0x2cc,
 320         NvRegRxBroadcast = 0x2d0,
 321         NvRegTxDef = 0x2d4,
 322         NvRegTxFrame = 0x2d8,
 323         NvRegRxCnt = 0x2dc,
 324         NvRegTxPause = 0x2e0,
 325         NvRegRxPause = 0x2e4,
 326         NvRegRxDropFrame = 0x2e8,
 327         NvRegVlanControl = 0x300,
 328 #define NVREG_VLANCONTROL_ENABLE        0x2000
 329         NvRegMSIXMap0 = 0x3e0,
 330         NvRegMSIXMap1 = 0x3e4,
 331         NvRegMSIXIrqStatus = 0x3f0,
 332
 333         NvRegPowerState2 = 0x600,
 334 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
 335 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 336 #define NVREG_POWERSTATE2_PHY_RESET             0x0004
 337 };
 338
 339 /* Big endian: should work, but is untested */
 340 struct ring_desc {
 341         __le32 buf;
 342         __le32 flaglen;
 343 };
 344
 345 struct ring_desc_ex {
 346         __le32 bufhigh;
 347         __le32 buflow;
 348         __le32 txvlan;
 349         __le32 flaglen;
 350 };
 351
 352 union ring_type {
 353         struct ring_desc* orig;
 354         struct ring_desc_ex* ex;
 355 };
 356
 357 #define FLAG_MASK_V1 0xffff0000
 358 #define FLAG_MASK_V2 0xffffc000
 359 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 360 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 361
 362 #define NV_TX_LASTPACKET        (1<<16)
 363 #define NV_TX_RETRYERROR        (1<<19)
 364 #define NV_TX_RETRYCOUNT_MASK   (0xF<<20)
 365 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 366 #define NV_TX_DEFERRED          (1<<26)
 367 #define NV_TX_CARRIERLOST       (1<<27)
 368 #define NV_TX_LATECOLLISION     (1<<28)
 369 #define NV_TX_UNDERFLOW         (1<<29)
 370 #define NV_TX_ERROR             (1<<30)
 371 #define NV_TX_VALID             (1<<31)
 372
 373 #define NV_TX2_LASTPACKET       (1<<29)
 374 #define NV_TX2_RETRYERROR       (1<<18)
 375 #define NV_TX2_RETRYCOUNT_MASK  (0xF<<19)
 376 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 377 #define NV_TX2_DEFERRED         (1<<25)
 378 #define NV_TX2_CARRIERLOST      (1<<26)
 379 #define NV_TX2_LATECOLLISION    (1<<27)
 380 #define NV_TX2_UNDERFLOW        (1<<28)
 381 /* error and valid are the same for both */
 382 #define NV_TX2_ERROR            (1<<30)
 383 #define NV_TX2_VALID            (1<<31)
 384 #define NV_TX2_TSO              (1<<28)
 385 #define NV_TX2_TSO_SHIFT        14
 386 #define NV_TX2_TSO_MAX_SHIFT    14
 387 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 388 #define NV_TX2_CHECKSUM_L3      (1<<27)
 389 #define NV_TX2_CHECKSUM_L4      (1<<26)
 390
 391 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 392
 393 #define NV_RX_DESCRIPTORVALID   (1<<16)
 394 #define NV_RX_MISSEDFRAME       (1<<17)
 395 #define NV_RX_SUBSTRACT1        (1<<18)
 396 #define NV_RX_ERROR1            (1<<23)
 397 #define NV_RX_ERROR2            (1<<24)
 398 #define NV_RX_ERROR3            (1<<25)
 399 #define NV_RX_ERROR4            (1<<26)
 400 #define NV_RX_CRCERR            (1<<27)
 401 #define NV_RX_OVERFLOW          (1<<28)
 402 #define NV_RX_FRAMINGERR        (1<<29)
 403 #define NV_RX_ERROR             (1<<30)
 404 #define NV_RX_AVAIL             (1<<31)
 405
 406 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 407 #define NV_RX2_CHECKSUM_IP      (0x10000000)
 408 #define NV_RX2_CHECKSUM_IP_TCP  (0x14000000)
 409 #define NV_RX2_CHECKSUM_IP_UDP  (0x18000000)
 410 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 411 #define NV_RX2_SUBSTRACT1       (1<<25)
 412 #define NV_RX2_ERROR1           (1<<18)
 413 #define NV_RX2_ERROR2           (1<<19)
 414 #define NV_RX2_ERROR3           (1<<20)
 415 #define NV_RX2_ERROR4           (1<<21)
 416 #define NV_RX2_CRCERR           (1<<22)
 417 #define NV_RX2_OVERFLOW         (1<<23)
 418 #define NV_RX2_FRAMINGERR       (1<<24)
 419 /* error and avail are the same for both */
 420 #define NV_RX2_ERROR            (1<<30)
 421 #define NV_RX2_AVAIL            (1<<31)
 422
 423 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 424 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 425
 426 /* Miscelaneous hardware related defines: */
 427 #define NV_PCI_REGSZ_VER1       0x270
 428 #define NV_PCI_REGSZ_VER2       0x2d4
 429 #define NV_PCI_REGSZ_VER3       0x604
 430 #define NV_PCI_REGSZ_MAX        0x604
 431
 432 /* various timeout delays: all in usec */
 433 #define NV_TXRX_RESET_DELAY     4
 434 #define NV_TXSTOP_DELAY1        10
 435 #define NV_TXSTOP_DELAY1MAX     500000
 436 #define NV_TXSTOP_DELAY2        100
 437 #define NV_RXSTOP_DELAY1        10
 438 #define NV_RXSTOP_DELAY1MAX     500000
 439 #define NV_RXSTOP_DELAY2        100
 440 #define NV_SETUP5_DELAY         5
 441 #define NV_SETUP5_DELAYMAX      50000
 442 #define NV_POWERUP_DELAY        5
 443 #define NV_POWERUP_DELAYMAX     5000
 444 #define NV_MIIBUSY_DELAY        50
 445 #define NV_MIIPHY_DELAY 10
 446 #define NV_MIIPHY_DELAYMAX      10000
 447 #define NV_MAC_RESET_DELAY      64
 448
 449 #define NV_WAKEUPPATTERNS       5
 450 #define NV_WAKEUPMASKENTRIES    4
 451
 452 /* General driver defaults */
 453 #define NV_WATCHDOG_TIMEO       (5*HZ)
 454
 455 #define RX_RING_DEFAULT         128
 456 #define TX_RING_DEFAULT         256
 457 #define RX_RING_MIN             128
 458 #define TX_RING_MIN             64
 459 #define RING_MAX_DESC_VER_1     1024
 460 #define RING_MAX_DESC_VER_2_3   16384
 461
 462 /* rx/tx mac addr + type + vlan + align + slack*/
 463 #define NV_RX_HEADERS           (64)
 464 /* even more slack. */
 465 #define NV_RX_ALLOC_PAD         (64)
 466
 467 /* maximum mtu size */
 468 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 469 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 470
 471 #define OOM_REFILL      (1+HZ/20)
 472 #define POLL_WAIT       (1+HZ/100)
 473 #define LINK_TIMEOUT    (3*HZ)
 474 #define STATS_INTERVAL  (10*HZ)
 475
 476 /*
 477  * desc_ver values:
 478  * The nic supports three different descriptor types:
 479  * - DESC_VER_1: Original
 480  * - DESC_VER_2: support for jumbo frames.
 481  * - DESC_VER_3: 64-bit format.
 482  */
 483 #define DESC_VER_1      1
 484 #define DESC_VER_2      2
 485 #define DESC_VER_3      3
 486
 487 /* PHY defines */
 488 #define PHY_OUI_MARVELL         0x5043
 489 #define PHY_OUI_CICADA          0x03f1
 490 #define PHY_OUI_VITESSE         0x01c1
 491 #define PHY_OUI_REALTEK         0x0732
 492 #define PHY_OUI_REALTEK2        0x0020
 493 #define PHYID1_OUI_MASK 0x03ff
 494 #define PHYID1_OUI_SHFT 6
 495 #define PHYID2_OUI_MASK 0xfc00
 496 #define PHYID2_OUI_SHFT 10
 497 #define PHYID2_MODEL_MASK               0x03f0
 498 #define PHY_MODEL_REALTEK_8211          0x0110
 499 #define PHY_REV_MASK                    0x0001
 500 #define PHY_REV_REALTEK_8211B           0x0000
 501 #define PHY_REV_REALTEK_8211C           0x0001
 502 #define PHY_MODEL_REALTEK_8201          0x0200
 503 #define PHY_MODEL_MARVELL_E3016         0x0220
 504 #define PHY_MARVELL_E3016_INITMASK      0x0300
 505 #define PHY_CICADA_INIT1        0x0f000
 506 #define PHY_CICADA_INIT2        0x0e00
 507 #define PHY_CICADA_INIT3        0x01000
 508 #define PHY_CICADA_INIT4        0x0200
 509 #define PHY_CICADA_INIT5        0x0004
 510 #define PHY_CICADA_INIT6        0x02000
 511 #define PHY_VITESSE_INIT_REG1   0x1f
 512 #define PHY_VITESSE_INIT_REG2   0x10
 513 #define PHY_VITESSE_INIT_REG3   0x11
 514 #define PHY_VITESSE_INIT_REG4   0x12
 515 #define PHY_VITESSE_INIT_MSK1   0xc
 516 #define PHY_VITESSE_INIT_MSK2   0x0180
 517 #define PHY_VITESSE_INIT1       0x52b5
 518 #define PHY_VITESSE_INIT2       0xaf8a
 519 #define PHY_VITESSE_INIT3       0x8
 520 #define PHY_VITESSE_INIT4       0x8f8a
 521 #define PHY_VITESSE_INIT5       0xaf86
 522 #define PHY_VITESSE_INIT6       0x8f86
 523 #define PHY_VITESSE_INIT7       0xaf82
 524 #define PHY_VITESSE_INIT8       0x0100
 525 #define PHY_VITESSE_INIT9       0x8f82
 526 #define PHY_VITESSE_INIT10      0x0
 527 #define PHY_REALTEK_INIT_REG1   0x1f
 528 #define PHY_REALTEK_INIT_REG2   0x19
 529 #define PHY_REALTEK_INIT_REG3   0x13
 530 #define PHY_REALTEK_INIT_REG4   0x14
 531 #define PHY_REALTEK_INIT_REG5   0x18
 532 #define PHY_REALTEK_INIT_REG6   0x11
 533 #define PHY_REALTEK_INIT_REG7   0x01
 534 #define PHY_REALTEK_INIT1       0x0000
 535 #define PHY_REALTEK_INIT2       0x8e00
 536 #define PHY_REALTEK_INIT3       0x0001
 537 #define PHY_REALTEK_INIT4       0xad17
 538 #define PHY_REALTEK_INIT5       0xfb54
 539 #define PHY_REALTEK_INIT6       0xf5c7
 540 #define PHY_REALTEK_INIT7       0x1000
 541 #define PHY_REALTEK_INIT8       0x0003
 542 #define PHY_REALTEK_INIT9       0x0008
 543 #define PHY_REALTEK_INIT10      0x0005
 544 #define PHY_REALTEK_INIT11      0x0200
 545 #define PHY_REALTEK_INIT_MSK1   0x0003
 546
 547 #define PHY_GIGABIT     0x0100
 548
 549 #define PHY_TIMEOUT     0x1
 550 #define PHY_ERROR       0x2
 551
 552 #define PHY_100 0x1
 553 #define PHY_1000        0x2
 554 #define PHY_HALF        0x100
 555
 556 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 557 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 558 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 559 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 560 #define NV_PAUSEFRAME_RX_REQ     0x0010
 561 #define NV_PAUSEFRAME_TX_REQ     0x0020
 562 #define NV_PAUSEFRAME_AUTONEG    0x0040
 563
 564 /* MSI/MSI-X defines */
 565 #define NV_MSI_X_MAX_VECTORS  8
 566 #define NV_MSI_X_VECTORS_MASK 0x000f
 567 #define NV_MSI_CAPABLE        0x0010
 568 #define NV_MSI_X_CAPABLE      0x0020
 569 #define NV_MSI_ENABLED        0x0040
 570 #define NV_MSI_X_ENABLED      0x0080
 571
 572 #define NV_MSI_X_VECTOR_ALL   0x0
 573 #define NV_MSI_X_VECTOR_RX    0x0
 574 #define NV_MSI_X_VECTOR_TX    0x1
 575 #define NV_MSI_X_VECTOR_OTHER 0x2
 576
 577 #define NV_RESTART_TX         0x1
 578 #define NV_RESTART_RX         0x2
 579
 580 #define NV_TX_LIMIT_COUNT     16
 581
 582 /* statistics */
 583 struct nv_ethtool_str {
 584         char name[ETH_GSTRING_LEN];
 585 };
 586
 587 static const struct nv_ethtool_str nv_estats_str[] = {
 588         { "tx_bytes" },
 589         { "tx_zero_rexmt" },
 590         { "tx_one_rexmt" },
 591         { "tx_many_rexmt" },
 592         { "tx_late_collision" },
 593         { "tx_fifo_errors" },
 594         { "tx_carrier_errors" },
 595         { "tx_excess_deferral" },
 596         { "tx_retry_error" },
 597         { "rx_frame_error" },
 598         { "rx_extra_byte" },
 599         { "rx_late_collision" },
 600         { "rx_runt" },
 601         { "rx_frame_too_long" },
 602         { "rx_over_errors" },
 603         { "rx_crc_errors" },
 604         { "rx_frame_align_error" },
 605         { "rx_length_error" },
 606         { "rx_unicast" },
 607         { "rx_multicast" },
 608         { "rx_broadcast" },
 609         { "rx_packets" },
 610         { "rx_errors_total" },
 611         { "tx_errors_total" },
 612
 613         /* version 2 stats */
 614         { "tx_deferral" },
 615         { "tx_packets" },
 616         { "rx_bytes" },
 617         { "tx_pause" },
 618         { "rx_pause" },
 619         { "rx_drop_frame" }
 620 };
 621
 622 struct nv_ethtool_stats {
 623         u64 tx_bytes;
 624         u64 tx_zero_rexmt;
 625         u64 tx_one_rexmt;
 626         u64 tx_many_rexmt;
 627         u64 tx_late_collision;
 628         u64 tx_fifo_errors;
 629         u64 tx_carrier_errors;
 630         u64 tx_excess_deferral;
 631         u64 tx_retry_error;
 632         u64 rx_frame_error;
 633         u64 rx_extra_byte;
 634         u64 rx_late_collision;
 635         u64 rx_runt;
 636         u64 rx_frame_too_long;
 637         u64 rx_over_errors;
 638         u64 rx_crc_errors;
 639         u64 rx_frame_align_error;
 640         u64 rx_length_error;
 641         u64 rx_unicast;
 642         u64 rx_multicast;
 643         u64 rx_broadcast;
 644         u64 rx_packets;
 645         u64 rx_errors_total;
 646         u64 tx_errors_total;
 647
 648         /* version 2 stats */
 649         u64 tx_deferral;
 650         u64 tx_packets;
 651         u64 rx_bytes;
 652         u64 tx_pause;
 653         u64 rx_pause;
 654         u64 rx_drop_frame;
 655 };
 656
 657 #define NV_DEV_STATISTICS_V2_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
 658 #define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
 659
 660 /* diagnostics */
 661 #define NV_TEST_COUNT_BASE 3
 662 #define NV_TEST_COUNT_EXTENDED 4
 663
 664 static const struct nv_ethtool_str nv_etests_str[] = {
 665         { "link      (online/offline)" },
 666         { "register  (offline)       " },
 667         { "interrupt (offline)       " },
 668         { "loopback  (offline)       " }
 669 };
 670
 671 struct register_test {
 672         __u32 reg;
 673         __u32 mask;
 674 };
 675
 676 static const struct register_test nv_registers_test[] = {
 677         { NvRegUnknownSetupReg6, 0x01 },
 678         { NvRegMisc1, 0x03c },
 679         { NvRegOffloadConfig, 0x03ff },
 680         { NvRegMulticastAddrA, 0xffffffff },
 681         { NvRegTxWatermark, 0x0ff },
 682         { NvRegWakeUpFlags, 0x07777 },
 683         { 0,0 }
 684 };
 685
 686 struct nv_skb_map {
 687         struct sk_buff *skb;
 688         dma_addr_t dma;
 689         unsigned int dma_len;
 690         struct ring_desc_ex *first_tx_desc;
 691         struct nv_skb_map *next_tx_ctx;
 692 };
 693
 694 /*
 695  * SMP locking:
 696  * All hardware access under dev->priv->lock, except the performance
 697  * critical parts:
 698  * - rx is (pseudo-) lockless: it relies on the single-threading provided
 699  *      by the arch code for interrupts.
 700  * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 701  *      needs dev->priv->lock :-(
 702  * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 703  */
 704
 705 /* in dev: base, irq */
 706 struct fe_priv {
 707         spinlock_t lock;
 708
 709         struct net_device *dev;
 710         struct napi_struct napi;
 711
 712         /* General data:
 713          * Locking: spin_lock(&np->lock); */
 714         struct nv_ethtool_stats estats;
 715         int in_shutdown;
 716         u32 linkspeed;
 717         int duplex;
 718         int autoneg;
 719         int fixed_mode;
 720         int phyaddr;
 721         int wolenabled;
 722         unsigned int phy_oui;
 723         unsigned int phy_model;
 724         unsigned int phy_rev;
 725         u16 gigabit;
 726         int intr_test;
 727         int recover_error;
 728
 729         /* General data: RO fields */
 730         dma_addr_t ring_addr;
 731         struct pci_dev *pci_dev;
 732         u32 orig_mac[2];
 733         u32 irqmask;
 734         u32 desc_ver;
 735         u32 txrxctl_bits;
 736         u32 vlanctl_bits;
 737         u32 driver_data;
 738         u32 device_id;
 739         u32 register_size;
 740         int rx_csum;
 741         u32 mac_in_use;
 742
 743         void __iomem *base;
 744
 745         /* rx specific fields.
 746          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 747          */
 748         union ring_type get_rx, put_rx, first_rx, last_rx;
 749         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 750         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 751         struct nv_skb_map *rx_skb;
 752
 753         union ring_type rx_ring;
 754         unsigned int rx_buf_sz;
 755         unsigned int pkt_limit;
 756         struct timer_list oom_kick;
 757         struct timer_list nic_poll;
 758         struct timer_list stats_poll;
 759         u32 nic_poll_irq;
 760         int rx_ring_size;
 761
 762         /* media detection workaround.
 763          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 764          */
 765         int need_linktimer;
 766         unsigned long link_timeout;
 767         /*
 768          * tx specific fields.
 769          */
 770         union ring_type get_tx, put_tx, first_tx, last_tx;
 771         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 772         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 773         struct nv_skb_map *tx_skb;
 774
 775         union ring_type tx_ring;
 776         u32 tx_flags;
 777         int tx_ring_size;
 778         int tx_limit;
 779         u32 tx_pkts_in_progress;
 780         struct nv_skb_map *tx_change_owner;
 781         struct nv_skb_map *tx_end_flip;
 782         int tx_stop;
 783
 784         /* vlan fields */
 785         struct vlan_group *vlangrp;
 786
 787         /* msi/msi-x fields */
 788         u32 msi_flags;
 789         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 790
 791         /* flow control */
 792         u32 pause_flags;
 793
 794         /* power saved state */
 795         u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
 796 };
 797
 798 /*
 799  * Maximum number of loops until we assume that a bit in the irq mask
 800  * is stuck. Overridable with module param.
 801  */
 802 static int max_interrupt_work = 5;
 803
 804 /*
 805  * Optimization can be either throuput mode or cpu mode
 806  *
 807  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 808  * CPU Mode: Interrupts are controlled by a timer.
 809  */
 810 enum {
 811         NV_OPTIMIZATION_MODE_THROUGHPUT,
 812         NV_OPTIMIZATION_MODE_CPU
 813 };
 814 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 815
 816 /*
 817  * Poll interval for timer irq
 818  *
 819  * This interval determines how frequent an interrupt is generated.
 820  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 821  * Min = 0, and Max = 65535
 822  */
 823 static int poll_interval = -1;
 824
 825 /*
 826  * MSI interrupts
 827  */
 828 enum {
 829         NV_MSI_INT_DISABLED,
 830         NV_MSI_INT_ENABLED
 831 };
 832 static int msi = NV_MSI_INT_ENABLED;
 833
 834 /*
 835  * MSIX interrupts
 836  */
 837 enum {
 838         NV_MSIX_INT_DISABLED,
 839         NV_MSIX_INT_ENABLED
 840 };
 841 static int msix = NV_MSIX_INT_DISABLED;
 842
 843 /*
 844  * DMA 64bit
 845  */
 846 enum {
 847         NV_DMA_64BIT_DISABLED,
 848         NV_DMA_64BIT_ENABLED
 849 };
 850 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 851
 852 /*
 853  * Crossover Detection
 854  * Realtek 8201 phy + some OEM boards do not work properly.
 855  */
 856 enum {
 857         NV_CROSSOVER_DETECTION_DISABLED,
 858         NV_CROSSOVER_DETECTION_ENABLED
 859 };
 860 static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
 861
 862 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 863 {
 864         return netdev_priv(dev);
 865 }
 866
 867 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 868 {
 869         return ((struct fe_priv *)netdev_priv(dev))->base;
 870 }
 871
 872 static inline void pci_push(u8 __iomem *base)
 873 {
 874         /* force out pending posted writes */
 875         readl(base);
 876 }
 877
 878 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 879 {
 880         return le32_to_cpu(prd->flaglen)
 881                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 882 }
 883
 884 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 885 {
 886         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 887 }
 888
 889 static bool nv_optimized(struct fe_priv *np)
 890 {
 891         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 892                 return false;
 893         return true;
 894 }
 895
 896 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 897                                 int delay, int delaymax, const char *msg)
 898 {
 899         u8 __iomem *base = get_hwbase(dev);
 900
 901         pci_push(base);
 902         do {
 903                 udelay(delay);
 904                 delaymax -= delay;
 905                 if (delaymax < 0) {
 906                         if (msg)
 907                                 printk(msg);
 908                         return 1;
 909                 }
 910         } while ((readl(base + offset) & mask) != target);
 911         return 0;
 912 }
 913
 914 #define NV_SETUP_RX_RING 0x01
 915 #define NV_SETUP_TX_RING 0x02
 916
 917 static inline u32 dma_low(dma_addr_t addr)
 918 {
 919         return addr;
 920 }
 921
 922 static inline u32 dma_high(dma_addr_t addr)
 923 {
 924         return addr>>31>>1;     /* 0 if 32bit, shift down by 32 if 64bit */
 925 }
 926
 927 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
 928 {
 929         struct fe_priv *np = get_nvpriv(dev);
 930         u8 __iomem *base = get_hwbase(dev);
 931
 932         if (!nv_optimized(np)) {
 933                 if (rxtx_flags & NV_SETUP_RX_RING) {
 934                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
 935                 }
 936                 if (rxtx_flags & NV_SETUP_TX_RING) {
 937                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
 938                 }
 939         } else {
 940                 if (rxtx_flags & NV_SETUP_RX_RING) {
 941                         writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
 942                         writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
 943                 }
 944                 if (rxtx_flags & NV_SETUP_TX_RING) {
 945                         writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
 946                         writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
 947                 }
 948         }
 949 }
 950
 951 static void free_rings(struct net_device *dev)
 952 {
 953         struct fe_priv *np = get_nvpriv(dev);
 954
 955         if (!nv_optimized(np)) {
 956                 if (np->rx_ring.orig)
 957                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
 958                                             np->rx_ring.orig, np->ring_addr);
 959         } else {
 960                 if (np->rx_ring.ex)
 961                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
 962                                             np->rx_ring.ex, np->ring_addr);
 963         }
 964         if (np->rx_skb)
 965                 kfree(np->rx_skb);
 966         if (np->tx_skb)
 967                 kfree(np->tx_skb);
 968 }
 969
 970 static int using_multi_irqs(struct net_device *dev)
 971 {
 972         struct fe_priv *np = get_nvpriv(dev);
 973
 974         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
 975             ((np->msi_flags & NV_MSI_X_ENABLED) &&
 976              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
 977                 return 0;
 978         else
 979                 return 1;
 980 }
 981
 982 static void nv_enable_irq(struct net_device *dev)
 983 {
 984         struct fe_priv *np = get_nvpriv(dev);
 985
 986         if (!using_multi_irqs(dev)) {
 987                 if (np->msi_flags & NV_MSI_X_ENABLED)
 988                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
 989                 else
 990                         enable_irq(np->pci_dev->irq);
 991         } else {
 992                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 993                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 994                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 995         }
 996 }
 997
 998 static void nv_disable_irq(struct net_device *dev)
 999 {
1000         struct fe_priv *np = get_nvpriv(dev);
1001
1002         if (!using_multi_irqs(dev)) {
1003                 if (np->msi_flags & NV_MSI_X_ENABLED)
1004                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1005                 else
1006                         disable_irq(np->pci_dev->irq);
1007         } else {
1008                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1009                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1010                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1011         }
1012 }
1013
1014 /* In MSIX mode, a write to irqmask behaves as XOR */
1015 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1016 {
1017         u8 __iomem *base = get_hwbase(dev);
1018
1019         writel(mask, base + NvRegIrqMask);
1020 }
1021
1022 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1023 {
1024         struct fe_priv *np = get_nvpriv(dev);
1025         u8 __iomem *base = get_hwbase(dev);
1026
1027         if (np->msi_flags & NV_MSI_X_ENABLED) {
1028                 writel(mask, base + NvRegIrqMask);
1029         } else {
1030                 if (np->msi_flags & NV_MSI_ENABLED)
1031                         writel(0, base + NvRegMSIIrqMask);
1032                 writel(0, base + NvRegIrqMask);
1033         }
1034 }
1035
1036 #define MII_READ        (-1)
1037 /* mii_rw: read/write a register on the PHY.
1038  *
1039  * Caller must guarantee serialization
1040  */
1041 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1042 {
1043         u8 __iomem *base = get_hwbase(dev);
1044         u32 reg;
1045         int retval;
1046
1047         writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1048
1049         reg = readl(base + NvRegMIIControl);
1050         if (reg & NVREG_MIICTL_INUSE) {
1051                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1052                 udelay(NV_MIIBUSY_DELAY);
1053         }
1054
1055         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1056         if (value != MII_READ) {
1057                 writel(value, base + NvRegMIIData);
1058                 reg |= NVREG_MIICTL_WRITE;
1059         }
1060         writel(reg, base + NvRegMIIControl);
1061
1062         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1063                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
1064                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
1065                                 dev->name, miireg, addr);
1066                 retval = -1;
1067         } else if (value != MII_READ) {
1068                 /* it was a write operation - fewer failures are detectable */
1069                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
1070                                 dev->name, value, miireg, addr);
1071                 retval = 0;
1072         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1073                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
1074                                 dev->name, miireg, addr);
1075                 retval = -1;
1076         } else {
1077                 retval = readl(base + NvRegMIIData);
1078                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
1079                                 dev->name, miireg, addr, retval);
1080         }
1081
1082         return retval;
1083 }
1084
1085 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1086 {
1087         struct fe_priv *np = netdev_priv(dev);
1088         u32 miicontrol;
1089         unsigned int tries = 0;
1090
1091         miicontrol = BMCR_RESET | bmcr_setup;
1092         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
1093                 return -1;
1094         }
1095
1096         /* wait for 500ms */
1097         msleep(500);
1098
1099         /* must wait till reset is deasserted */
1100         while (miicontrol & BMCR_RESET) {
1101                 msleep(10);
1102                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1103                 /* FIXME: 100 tries seem excessive */
1104                 if (tries++ > 100)
1105                         return -1;
1106         }
1107         return 0;
1108 }
1109
1110 static int phy_init(struct net_device *dev)
1111 {
1112         struct fe_priv *np = get_nvpriv(dev);
1113         u8 __iomem *base = get_hwbase(dev);
1114         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
1115
1116         /* phy errata for E3016 phy */
1117         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1118                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1119                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1120                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1121                         printk(KERN_INFO "%s: phy write to errata reg failed.\n", pci_name(np->pci_dev));
1122                         return PHY_ERROR;
1123                 }
1124         }
1125         if (np->phy_oui == PHY_OUI_REALTEK) {
1126                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1127                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1128                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1129                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1130                                 return PHY_ERROR;
1131                         }
1132                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1133                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1134                                 return PHY_ERROR;
1135                         }
1136                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1137                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1138                                 return PHY_ERROR;
1139                         }
1140                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1141                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1142                                 return PHY_ERROR;
1143                         }
1144                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5)) {
1145                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1146                                 return PHY_ERROR;
1147                         }
1148                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6)) {
1149                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1150                                 return PHY_ERROR;
1151                         }
1152                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1153                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1154                                 return PHY_ERROR;
1155                         }
1156                 }
1157                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1158                     np->phy_rev == PHY_REV_REALTEK_8211C) {
1159                         u32 powerstate = readl(base + NvRegPowerState2);
1160
1161                         /* need to perform hw phy reset */
1162                         powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1163                         writel(powerstate, base + NvRegPowerState2);
1164                         msleep(25);
1165
1166                         powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1167                         writel(powerstate, base + NvRegPowerState2);
1168                         msleep(25);
1169
1170                         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1171                         reg |= PHY_REALTEK_INIT9;
1172                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg)) {
1173                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1174                                 return PHY_ERROR;
1175                         }
1176                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10)) {
1177                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1178                                 return PHY_ERROR;
1179                         }
1180                         reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1181                         if (!(reg & PHY_REALTEK_INIT11)) {
1182                                 reg |= PHY_REALTEK_INIT11;
1183                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg)) {
1184                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1185                                         return PHY_ERROR;
1186                                 }
1187                         }
1188                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1189                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1190                                 return PHY_ERROR;
1191                         }
1192                 }
1193                 if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1194                         if (np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
1195                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
1196                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
1197                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
1198                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
1199                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
1200                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
1201                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_39) {
1202                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1203                                 phy_reserved |= PHY_REALTEK_INIT7;
1204                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, phy_reserved)) {
1205                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1206                                         return PHY_ERROR;
1207                                 }
1208                         }
1209                 }
1210         }
1211
1212         /* set advertise register */
1213         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1214         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|ADVERTISE_PAUSE_ASYM|ADVERTISE_PAUSE_CAP);
1215         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1216                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
1217                 return PHY_ERROR;
1218         }
1219
1220         /* get phy interface type */
1221         phyinterface = readl(base + NvRegPhyInterface);
1222
1223         /* see if gigabit phy */
1224         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1225         if (mii_status & PHY_GIGABIT) {
1226                 np->gigabit = PHY_GIGABIT;
1227                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
1228                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1229                 if (phyinterface & PHY_RGMII)
1230                         mii_control_1000 |= ADVERTISE_1000FULL;
1231                 else
1232                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1233
1234                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1235                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1236                         return PHY_ERROR;
1237                 }
1238         }
1239         else
1240                 np->gigabit = 0;
1241
1242         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1243         mii_control |= BMCR_ANENABLE;
1244
1245         if (np->phy_oui == PHY_OUI_REALTEK &&
1246             np->phy_model == PHY_MODEL_REALTEK_8211 &&
1247             np->phy_rev == PHY_REV_REALTEK_8211C) {
1248                 /* start autoneg since we already performed hw reset above */
1249                 mii_control |= BMCR_ANRESTART;
1250                 if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1251                         printk(KERN_INFO "%s: phy init failed\n", pci_name(np->pci_dev));
1252                         return PHY_ERROR;
1253                 }
1254         } else {
1255                 /* reset the phy
1256                  * (certain phys need bmcr to be setup with reset)
1257                  */
1258                 if (phy_reset(dev, mii_control)) {
1259                         printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
1260                         return PHY_ERROR;
1261                 }
1262         }
1263
1264         /* phy vendor specific configuration */
1265         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
1266                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1267                 phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1268                 phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1269                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
1270                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1271                         return PHY_ERROR;
1272                 }
1273                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1274                 phy_reserved |= PHY_CICADA_INIT5;
1275                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
1276                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1277                         return PHY_ERROR;
1278                 }
1279         }
1280         if (np->phy_oui == PHY_OUI_CICADA) {
1281                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1282                 phy_reserved |= PHY_CICADA_INIT6;
1283                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
1284                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1285                         return PHY_ERROR;
1286                 }
1287         }
1288         if (np->phy_oui == PHY_OUI_VITESSE) {
1289                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1)) {
1290                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1291                         return PHY_ERROR;
1292                 }
1293                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2)) {
1294                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1295                         return PHY_ERROR;
1296                 }
1297                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1298                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1299                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1300                         return PHY_ERROR;
1301                 }
1302                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1303                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1304                 phy_reserved |= PHY_VITESSE_INIT3;
1305                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1306                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1307                         return PHY_ERROR;
1308                 }
1309                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4)) {
1310                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1311                         return PHY_ERROR;
1312                 }
1313                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5)) {
1314                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1315                         return PHY_ERROR;
1316                 }
1317                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1318                 phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1319                 phy_reserved |= PHY_VITESSE_INIT3;
1320                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1321                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1322                         return PHY_ERROR;
1323                 }
1324                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1325                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1326                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1327                         return PHY_ERROR;
1328                 }
1329                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6)) {
1330                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1331                         return PHY_ERROR;
1332                 }
1333                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7)) {
1334                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1335                         return PHY_ERROR;
1336                 }
1337                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, MII_READ);
1338                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved)) {
1339                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1340                         return PHY_ERROR;
1341                 }
1342                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, MII_READ);
1343                 phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1344                 phy_reserved |= PHY_VITESSE_INIT8;
1345                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved)) {
1346                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1347                         return PHY_ERROR;
1348                 }
1349                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9)) {
1350                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1351                         return PHY_ERROR;
1352                 }
1353                 if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10)) {
1354                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1355                         return PHY_ERROR;
1356                 }
1357         }
1358         if (np->phy_oui == PHY_OUI_REALTEK) {
1359                 if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1360                     np->phy_rev == PHY_REV_REALTEK_8211B) {
1361                         /* reset could have cleared these out, set them back */
1362                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1363                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1364                                 return PHY_ERROR;
1365                         }
1366                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2)) {
1367                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1368                                 return PHY_ERROR;
1369                         }
1370                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1371                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1372                                 return PHY_ERROR;
1373                         }
1374                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4)) {
1375                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1376                                 return PHY_ERROR;
1377                         }
1378                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5)) {
1379                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1380                                 return PHY_ERROR;
1381                         }
1382                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6)) {
1383                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1384                                 return PHY_ERROR;
1385                         }
1386                         if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1387                                 printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1388                                 return PHY_ERROR;
1389                         }
1390                 }
1391                 if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1392                         if (np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
1393                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
1394                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
1395                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
1396                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
1397                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
1398                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
1399                             np->device_id == PCI_DEVICE_ID_NVIDIA_NVENET_39) {
1400                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1401                                 phy_reserved |= PHY_REALTEK_INIT7;
1402                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, phy_reserved)) {
1403                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1404                                         return PHY_ERROR;
1405                                 }
1406                         }
1407                         if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1408                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3)) {
1409                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1410                                         return PHY_ERROR;
1411                                 }
1412                                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
1413                                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1414                                 phy_reserved |= PHY_REALTEK_INIT3;
1415                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved)) {
1416                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1417                                         return PHY_ERROR;
1418                                 }
1419                                 if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1)) {
1420                                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1421                                         return PHY_ERROR;
1422                                 }
1423                         }
1424                 }
1425         }
1426
1427         /* some phys clear out pause advertisment on reset, set it back */
1428         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1429
1430         /* restart auto negotiation */
1431         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1432         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1433         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1434                 return PHY_ERROR;
1435         }
1436
1437         return 0;
1438 }
1439
1440 static void nv_start_rx(struct net_device *dev)
1441 {
1442         struct fe_priv *np = netdev_priv(dev);
1443         u8 __iomem *base = get_hwbase(dev);
1444         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1445
1446         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
1447         /* Already running? Stop it. */
1448         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1449                 rx_ctrl &= ~NVREG_RCVCTL_START;
1450                 writel(rx_ctrl, base + NvRegReceiverControl);
1451                 pci_push(base);
1452         }
1453         writel(np->linkspeed, base + NvRegLinkSpeed);
1454         pci_push(base);
1455         rx_ctrl |= NVREG_RCVCTL_START;
1456         if (np->mac_in_use)
1457                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1458         writel(rx_ctrl, base + NvRegReceiverControl);
1459         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
1460                                 dev->name, np->duplex, np->linkspeed);
1461         pci_push(base);
1462 }
1463
1464 static void nv_stop_rx(struct net_device *dev)
1465 {
1466         struct fe_priv *np = netdev_priv(dev);
1467         u8 __iomem *base = get_hwbase(dev);
1468         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1469
1470         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
1471         if (!np->mac_in_use)
1472                 rx_ctrl &= ~NVREG_RCVCTL_START;
1473         else
1474                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1475         writel(rx_ctrl, base + NvRegReceiverControl);
1476         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1477                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
1478                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
1479
1480         udelay(NV_RXSTOP_DELAY2);
1481         if (!np->mac_in_use)
1482                 writel(0, base + NvRegLinkSpeed);
1483 }
1484
1485 static void nv_start_tx(struct net_device *dev)
1486 {
1487         struct fe_priv *np = netdev_priv(dev);
1488         u8 __iomem *base = get_hwbase(dev);
1489         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1490
1491         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
1492         tx_ctrl |= NVREG_XMITCTL_START;
1493         if (np->mac_in_use)
1494                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1495         writel(tx_ctrl, base + NvRegTransmitterControl);
1496         pci_push(base);
1497 }
1498
1499 static void nv_stop_tx(struct net_device *dev)
1500 {
1501         struct fe_priv *np = netdev_priv(dev);
1502         u8 __iomem *base = get_hwbase(dev);
1503         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1504
1505         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
1506         if (!np->mac_in_use)
1507                 tx_ctrl &= ~NVREG_XMITCTL_START;
1508         else
1509                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1510         writel(tx_ctrl, base + NvRegTransmitterControl);
1511         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1512                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
1513                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
1514
1515         udelay(NV_TXSTOP_DELAY2);
1516         if (!np->mac_in_use)
1517                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1518                        base + NvRegTransmitPoll);
1519 }
1520
1521 static void nv_start_rxtx(struct net_device *dev)
1522 {
1523         nv_start_rx(dev);
1524         nv_start_tx(dev);
1525 }
1526
1527 static void nv_stop_rxtx(struct net_device *dev)
1528 {
1529         nv_stop_rx(dev);
1530         nv_stop_tx(dev);
1531 }
1532
1533 static void nv_txrx_reset(struct net_device *dev)
1534 {
1535         struct fe_priv *np = netdev_priv(dev);
1536         u8 __iomem *base = get_hwbase(dev);
1537
1538         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
1539         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1540         pci_push(base);
1541         udelay(NV_TXRX_RESET_DELAY);
1542         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1543         pci_push(base);
1544 }
1545
1546 static void nv_mac_reset(struct net_device *dev)
1547 {
1548         struct fe_priv *np = netdev_priv(dev);
1549         u8 __iomem *base = get_hwbase(dev);
1550         u32 temp1, temp2, temp3;
1551
1552         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
1553
1554         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1555         pci_push(base);
1556
1557         /* save registers since they will be cleared on reset */
1558         temp1 = readl(base + NvRegMacAddrA);
1559         temp2 = readl(base + NvRegMacAddrB);
1560         temp3 = readl(base + NvRegTransmitPoll);
1561
1562         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1563         pci_push(base);
1564         udelay(NV_MAC_RESET_DELAY);
1565         writel(0, base + NvRegMacReset);
1566         pci_push(base);
1567         udelay(NV_MAC_RESET_DELAY);
1568
1569         /* restore saved registers */
1570         writel(temp1, base + NvRegMacAddrA);
1571         writel(temp2, base + NvRegMacAddrB);
1572         writel(temp3, base + NvRegTransmitPoll);
1573
1574         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1575         pci_push(base);
1576 }
1577
1578 static void nv_get_hw_stats(struct net_device *dev)
1579 {
1580         struct fe_priv *np = netdev_priv(dev);
1581         u8 __iomem *base = get_hwbase(dev);
1582
1583         np->estats.tx_bytes += readl(base + NvRegTxCnt);
1584         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1585         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1586         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1587         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1588         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1589         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1590         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1591         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1592         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1593         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1594         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1595         np->estats.rx_runt += readl(base + NvRegRxRunt);
1596         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1597         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1598         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1599         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1600         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1601         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1602         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1603         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1604         np->estats.rx_packets =
1605                 np->estats.rx_unicast +
1606                 np->estats.rx_multicast +
1607                 np->estats.rx_broadcast;
1608         np->estats.rx_errors_total =
1609                 np->estats.rx_crc_errors +
1610                 np->estats.rx_over_errors +
1611                 np->estats.rx_frame_error +
1612                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1613                 np->estats.rx_late_collision +
1614                 np->estats.rx_runt +
1615                 np->estats.rx_frame_too_long;
1616         np->estats.tx_errors_total =
1617                 np->estats.tx_late_collision +
1618                 np->estats.tx_fifo_errors +
1619                 np->estats.tx_carrier_errors +
1620                 np->estats.tx_excess_deferral +
1621                 np->estats.tx_retry_error;
1622
1623         if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1624                 np->estats.tx_deferral += readl(base + NvRegTxDef);
1625                 np->estats.tx_packets += readl(base + NvRegTxFrame);
1626                 np->estats.rx_bytes += readl(base + NvRegRxCnt);
1627                 np->estats.tx_pause += readl(base + NvRegTxPause);
1628                 np->estats.rx_pause += readl(base + NvRegRxPause);
1629                 np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1630         }
1631 }
1632
1633 /*
1634  * nv_get_stats: dev->get_stats function
1635  * Get latest stats value from the nic.
1636  * Called with read_lock(&dev_base_lock) held for read -
1637  * only synchronized against unregister_netdevice.
1638  */
1639 static struct net_device_stats *nv_get_stats(struct net_device *dev)
1640 {
1641         struct fe_priv *np = netdev_priv(dev);
1642
1643         /* If the nic supports hw counters then retrieve latest values */
1644         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2)) {
1645                 nv_get_hw_stats(dev);
1646
1647                 /* copy to net_device stats */
1648                 dev->stats.tx_bytes = np->estats.tx_bytes;
1649                 dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
1650                 dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
1651                 dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
1652                 dev->stats.rx_over_errors = np->estats.rx_over_errors;
1653                 dev->stats.rx_errors = np->estats.rx_errors_total;
1654                 dev->stats.tx_errors = np->estats.tx_errors_total;
1655         }
1656
1657         return &dev->stats;
1658 }
1659
1660 /*
1661  * nv_alloc_rx: fill rx ring entries.
1662  * Return 1 if the allocations for the skbs failed and the
1663  * rx engine is without Available descriptors
1664  */
1665 static int nv_alloc_rx(struct net_device *dev)
1666 {
1667         struct fe_priv *np = netdev_priv(dev);
1668         struct ring_desc* less_rx;
1669
1670         less_rx = np->get_rx.orig;
1671         if (less_rx-- == np->first_rx.orig)
1672                 less_rx = np->last_rx.orig;
1673
1674         while (np->put_rx.orig != less_rx) {
1675                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1676                 if (skb) {
1677                         np->put_rx_ctx->skb = skb;
1678                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1679                                                              skb->data,
1680                                                              skb_tailroom(skb),
1681                                                              PCI_DMA_FROMDEVICE);
1682                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1683                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1684                         wmb();
1685                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1686                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1687                                 np->put_rx.orig = np->first_rx.orig;
1688                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1689                                 np->put_rx_ctx = np->first_rx_ctx;
1690                 } else {
1691                         return 1;
1692                 }
1693         }
1694         return 0;
1695 }
1696
1697 static int nv_alloc_rx_optimized(struct net_device *dev)
1698 {
1699         struct fe_priv *np = netdev_priv(dev);
1700         struct ring_desc_ex* less_rx;
1701
1702         less_rx = np->get_rx.ex;
1703         if (less_rx-- == np->first_rx.ex)
1704                 less_rx = np->last_rx.ex;
1705
1706         while (np->put_rx.ex != less_rx) {
1707                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1708                 if (skb) {
1709                         np->put_rx_ctx->skb = skb;
1710                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1711                                                              skb->data,
1712                                                              skb_tailroom(skb),
1713                                                              PCI_DMA_FROMDEVICE);
1714                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
1715                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1716                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1717                         wmb();
1718                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1719                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1720                                 np->put_rx.ex = np->first_rx.ex;
1721                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1722                                 np->put_rx_ctx = np->first_rx_ctx;
1723                 } else {
1724                         return 1;
1725                 }
1726         }
1727         return 0;
1728 }
1729
1730 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1731 #ifdef CONFIG_FORCEDETH_NAPI
1732 static void nv_do_rx_refill(unsigned long data)
1733 {
1734         struct net_device *dev = (struct net_device *) data;
1735         struct fe_priv *np = netdev_priv(dev);
1736
1737         /* Just reschedule NAPI rx processing */
1738         netif_rx_schedule(dev, &np->napi);
1739 }
1740 #else
1741 static void nv_do_rx_refill(unsigned long data)
1742 {
1743         struct net_device *dev = (struct net_device *) data;
1744         struct fe_priv *np = netdev_priv(dev);
1745         int retcode;
1746
1747         if (!using_multi_irqs(dev)) {
1748                 if (np->msi_flags & NV_MSI_X_ENABLED)
1749                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1750                 else
1751                         disable_irq(np->pci_dev->irq);
1752         } else {
1753                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1754         }
1755         if (!nv_optimized(np))
1756                 retcode = nv_alloc_rx(dev);
1757         else
1758                 retcode = nv_alloc_rx_optimized(dev);
1759         if (retcode) {
1760                 spin_lock_irq(&np->lock);
1761                 if (!np->in_shutdown)
1762                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1763                 spin_unlock_irq(&np->lock);
1764         }
1765         if (!using_multi_irqs(dev)) {
1766                 if (np->msi_flags & NV_MSI_X_ENABLED)
1767                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1768                 else
1769                         enable_irq(np->pci_dev->irq);
1770         } else {
1771                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1772         }
1773 }
1774 #endif
1775
1776 static void nv_init_rx(struct net_device *dev)
1777 {
1778         struct fe_priv *np = netdev_priv(dev);
1779         int i;
1780
1781         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1782
1783         if (!nv_optimized(np))
1784                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1785         else
1786                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1787         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1788         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1789
1790         for (i = 0; i < np->rx_ring_size; i++) {
1791                 if (!nv_optimized(np)) {
1792                         np->rx_ring.orig[i].flaglen = 0;
1793                         np->rx_ring.orig[i].buf = 0;
1794                 } else {
1795                         np->rx_ring.ex[i].flaglen = 0;
1796                         np->rx_ring.ex[i].txvlan = 0;
1797                         np->rx_ring.ex[i].bufhigh = 0;
1798                         np->rx_ring.ex[i].buflow = 0;
1799                 }
1800                 np->rx_skb[i].skb = NULL;
1801                 np->rx_skb[i].dma = 0;
1802         }
1803 }
1804
1805 static void nv_init_tx(struct net_device *dev)
1806 {
1807         struct fe_priv *np = netdev_priv(dev);
1808         int i;
1809
1810         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1811
1812         if (!nv_optimized(np))
1813                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1814         else
1815                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1816         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1817         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1818         np->tx_pkts_in_progress = 0;
1819         np->tx_change_owner = NULL;
1820         np->tx_end_flip = NULL;
1821
1822         for (i = 0; i < np->tx_ring_size; i++) {
1823                 if (!nv_optimized(np)) {
1824                         np->tx_ring.orig[i].flaglen = 0;
1825                         np->tx_ring.orig[i].buf = 0;
1826                 } else {
1827                         np->tx_ring.ex[i].flaglen = 0;
1828                         np->tx_ring.ex[i].txvlan = 0;
1829                         np->tx_ring.ex[i].bufhigh = 0;
1830                         np->tx_ring.ex[i].buflow = 0;
1831                 }
1832                 np->tx_skb[i].skb = NULL;
1833                 np->tx_skb[i].dma = 0;
1834                 np->tx_skb[i].dma_len = 0;
1835                 np->tx_skb[i].first_tx_desc = NULL;
1836                 np->tx_skb[i].next_tx_ctx = NULL;
1837         }
1838 }
1839
1840 static int nv_init_ring(struct net_device *dev)
1841 {
1842         struct fe_priv *np = netdev_priv(dev);
1843
1844         nv_init_tx(dev);
1845         nv_init_rx(dev);
1846
1847         if (!nv_optimized(np))
1848                 return nv_alloc_rx(dev);
1849         else
1850                 return nv_alloc_rx_optimized(dev);
1851 }
1852
1853 static int nv_release_txskb(struct net_device *dev, struct nv_skb_map* tx_skb)
1854 {
1855         struct fe_priv *np = netdev_priv(dev);
1856
1857         if (tx_skb->dma) {
1858                 pci_unmap_page(np->pci_dev, tx_skb->dma,
1859                                tx_skb->dma_len,
1860                                PCI_DMA_TODEVICE);
1861                 tx_skb->dma = 0;
1862         }
1863         if (tx_skb->skb) {
1864                 dev_kfree_skb_any(tx_skb->skb);
1865                 tx_skb->skb = NULL;
1866                 return 1;
1867         } else {
1868                 return 0;
1869         }
1870 }
1871
1872 static void nv_drain_tx(struct net_device *dev)
1873 {
1874         struct fe_priv *np = netdev_priv(dev);
1875         unsigned int i;
1876
1877         for (i = 0; i < np->tx_ring_size; i++) {
1878                 if (!nv_optimized(np)) {
1879                         np->tx_ring.orig[i].flaglen = 0;
1880                         np->tx_ring.orig[i].buf = 0;
1881                 } else {
1882                         np->tx_ring.ex[i].flaglen = 0;
1883                         np->tx_ring.ex[i].txvlan = 0;
1884                         np->tx_ring.ex[i].bufhigh = 0;
1885                         np->tx_ring.ex[i].buflow = 0;
1886                 }
1887                 if (nv_release_txskb(dev, &np->tx_skb[i]))
1888                         dev->stats.tx_dropped++;
1889                 np->tx_skb[i].dma = 0;
1890                 np->tx_skb[i].dma_len = 0;
1891                 np->tx_skb[i].first_tx_desc = NULL;
1892                 np->tx_skb[i].next_tx_ctx = NULL;
1893         }
1894         np->tx_pkts_in_progress = 0;
1895         np->tx_change_owner = NULL;
1896         np->tx_end_flip = NULL;
1897 }
1898
1899 static void nv_drain_rx(struct net_device *dev)
1900 {
1901         struct fe_priv *np = netdev_priv(dev);
1902         int i;
1903
1904         for (i = 0; i < np->rx_ring_size; i++) {
1905                 if (!nv_optimized(np)) {
1906                         np->rx_ring.orig[i].flaglen = 0;
1907                         np->rx_ring.orig[i].buf = 0;
1908                 } else {
1909                         np->rx_ring.ex[i].flaglen = 0;
1910                         np->rx_ring.ex[i].txvlan = 0;
1911                         np->rx_ring.ex[i].bufhigh = 0;
1912                         np->rx_ring.ex[i].buflow = 0;
1913                 }
1914                 wmb();
1915                 if (np->rx_skb[i].skb) {
1916                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
1917                                          (skb_end_pointer(np->rx_skb[i].skb) -
1918                                           np->rx_skb[i].skb->data),
1919                                          PCI_DMA_FROMDEVICE);
1920                         dev_kfree_skb(np->rx_skb[i].skb);
1921                         np->rx_skb[i].skb = NULL;
1922                 }
1923         }
1924 }
1925
1926 static void nv_drain_rxtx(struct net_device *dev)
1927 {
1928         nv_drain_tx(dev);
1929         nv_drain_rx(dev);
1930 }
1931
1932 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
1933 {
1934         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
1935 }
1936
1937 static void nv_legacybackoff_reseed(struct net_device *dev)
1938 {
1939         u8 __iomem *base = get_hwbase(dev);
1940         u32 reg;
1941         u32 low;
1942         int tx_status = 0;
1943
1944         reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
1945         get_random_bytes(&low, sizeof(low));
1946         reg |= low & NVREG_SLOTTIME_MASK;
1947
1948         /* Need to stop tx before change takes effect.
1949          * Caller has already gained np->lock.
1950          */
1951         tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
1952         if (tx_status)
1953                 nv_stop_tx(dev);
1954         nv_stop_rx(dev);
1955         writel(reg, base + NvRegSlotTime);
1956         if (tx_status)
1957                 nv_start_tx(dev);
1958         nv_start_rx(dev);
1959 }
1960
1961 /* Gear Backoff Seeds */
1962 #define BACKOFF_SEEDSET_ROWS    8
1963 #define BACKOFF_SEEDSET_LFSRS   15
1964
1965 /* Known Good seed sets */
1966 static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
1967     {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
1968     {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
1969     {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
1970     {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
1971     {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
1972     {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
1973     {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800,  84},
1974     {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184}};
1975
1976 static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
1977     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1978     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1979     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
1980     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1981     {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
1982     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1983     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
1984     {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395}};
1985
1986 static void nv_gear_backoff_reseed(struct net_device *dev)
1987 {
1988         u8 __iomem *base = get_hwbase(dev);
1989         u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
1990         u32 temp, seedset, combinedSeed;
1991         int i;
1992
1993         /* Setup seed for free running LFSR */
1994         /* We are going to read the time stamp counter 3 times
1995            and swizzle bits around to increase randomness */
1996         get_random_bytes(&miniseed1, sizeof(miniseed1));
1997         miniseed1 &= 0x0fff;
1998         if (miniseed1 == 0)
1999                 miniseed1 = 0xabc;
2000
2001         get_random_bytes(&miniseed2, sizeof(miniseed2));
2002         miniseed2 &= 0x0fff;
2003         if (miniseed2 == 0)
2004                 miniseed2 = 0xabc;
2005         miniseed2_reversed =
2006                 ((miniseed2 & 0xF00) >> 8) |
2007                  (miniseed2 & 0x0F0) |
2008                  ((miniseed2 & 0x00F) << 8);
2009
2010         get_random_bytes(&miniseed3, sizeof(miniseed3));
2011         miniseed3 &= 0x0fff;
2012         if (miniseed3 == 0)
2013                 miniseed3 = 0xabc;
2014         miniseed3_reversed =
2015                 ((miniseed3 & 0xF00) >> 8) |
2016                  (miniseed3 & 0x0F0) |
2017                  ((miniseed3 & 0x00F) << 8);
2018
2019         combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2020                        (miniseed2 ^ miniseed3_reversed);
2021
2022         /* Seeds can not be zero */
2023         if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2024                 combinedSeed |= 0x08;
2025         if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2026                 combinedSeed |= 0x8000;
2027
2028         /* No need to disable tx here */
2029         temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2030         temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2031         temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2032         writel(temp,base + NvRegBackOffControl);
2033
2034         /* Setup seeds for all gear LFSRs. */
2035         get_random_bytes(&seedset, sizeof(seedset));
2036         seedset = seedset % BACKOFF_SEEDSET_ROWS;
2037         for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++)
2038         {
2039                 temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2040                 temp |= main_seedset[seedset][i-1] & 0x3ff;
2041                 temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2042                 writel(temp, base + NvRegBackOffControl);
2043         }
2044 }
2045
2046 /*
2047  * nv_start_xmit: dev->hard_start_xmit function
2048  * Called with netif_tx_lock held.
2049  */
2050 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2051 {
2052         struct fe_priv *np = netdev_priv(dev);
2053         u32 tx_flags = 0;
2054         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2055         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2056         unsigned int i;
2057         u32 offset = 0;
2058         u32 bcnt;
2059         u32 size = skb->len-skb->data_len;
2060         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2061         u32 empty_slots;
2062         struct ring_desc* put_tx;
2063         struct ring_desc* start_tx;
2064         struct ring_desc* prev_tx;
2065         struct nv_skb_map* prev_tx_ctx;
2066         unsigned long flags;
2067
2068         /* add fragments to entries count */
2069         for (i = 0; i < fragments; i++) {
2070                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
2071                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2072         }
2073
2074         empty_slots = nv_get_empty_tx_slots(np);
2075         if (unlikely(empty_slots <= entries)) {
2076                 spin_lock_irqsave(&np->lock, flags);
2077                 netif_stop_queue(dev);
2078                 np->tx_stop = 1;
2079                 spin_unlock_irqrestore(&np->lock, flags);
2080                 return NETDEV_TX_BUSY;
2081         }
2082
2083         start_tx = put_tx = np->put_tx.orig;
2084
2085         /* setup the header buffer */
2086         do {
2087                 prev_tx = put_tx;
2088                 prev_tx_ctx = np->put_tx_ctx;
2089                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2090                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2091                                                 PCI_DMA_TODEVICE);
2092                 np->put_tx_ctx->dma_len = bcnt;
2093                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2094                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2095
2096                 tx_flags = np->tx_flags;
2097                 offset += bcnt;
2098                 size -= bcnt;
2099                 if (unlikely(put_tx++ == np->last_tx.orig))
2100                         put_tx = np->first_tx.orig;
2101                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2102                         np->put_tx_ctx = np->first_tx_ctx;
2103         } while (size);
2104
2105         /* setup the fragments */
2106         for (i = 0; i < fragments; i++) {
2107                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2108                 u32 size = frag->size;
2109                 offset = 0;
2110
2111                 do {
2112                         prev_tx = put_tx;
2113                         prev_tx_ctx = np->put_tx_ctx;
2114                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2115                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
2116                                                            PCI_DMA_TODEVICE);
2117                         np->put_tx_ctx->dma_len = bcnt;
2118                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2119                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2120
2121                         offset += bcnt;
2122                         size -= bcnt;
2123                         if (unlikely(put_tx++ == np->last_tx.orig))
2124                                 put_tx = np->first_tx.orig;
2125                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2126                                 np->put_tx_ctx = np->first_tx_ctx;
2127                 } while (size);
2128         }
2129
2130         /* set last fragment flag  */
2131         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2132
2133         /* save skb in this slot's context area */
2134         prev_tx_ctx->skb = skb;
2135
2136         if (skb_is_gso(skb))
2137                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2138         else
2139                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2140                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2141
2142         spin_lock_irqsave(&np->lock, flags);
2143
2144         /* set tx flags */
2145         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2146         np->put_tx.orig = put_tx;
2147
2148         spin_unlock_irqrestore(&np->lock, flags);
2149
2150         dprintk(KERN_DEBUG "%s: nv_start_xmit: entries %d queued for transmission. tx_flags_extra: %x\n",
2151                 dev->name, entries, tx_flags_extra);
2152         {
2153                 int j;
2154                 for (j=0; j<64; j++) {
2155                         if ((j%16) == 0)
2156                                 dprintk("\n%03x:", j);
2157                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2158                 }
2159                 dprintk("\n");
2160         }
2161
2162         dev->trans_start = jiffies;
2163         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2164         return NETDEV_TX_OK;
2165 }
2166
2167 static int nv_start_xmit_optimized(struct sk_buff *skb, struct net_device *dev)
2168 {
2169         struct fe_priv *np = netdev_priv(dev);
2170         u32 tx_flags = 0;
2171         u32 tx_flags_extra;
2172         unsigned int fragments = skb_shinfo(skb)->nr_frags;
2173         unsigned int i;
2174         u32 offset = 0;
2175         u32 bcnt;
2176         u32 size = skb->len-skb->data_len;
2177         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2178         u32 empty_slots;
2179         struct ring_desc_ex* put_tx;
2180         struct ring_desc_ex* start_tx;
2181         struct ring_desc_ex* prev_tx;
2182         struct nv_skb_map* prev_tx_ctx;
2183         struct nv_skb_map* start_tx_ctx;
2184         unsigned long flags;
2185
2186         /* add fragments to entries count */
2187         for (i = 0; i < fragments; i++) {
2188                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
2189                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2190         }
2191
2192         empty_slots = nv_get_empty_tx_slots(np);
2193         if (unlikely(empty_slots <= entries)) {
2194                 spin_lock_irqsave(&np->lock, flags);
2195                 netif_stop_queue(dev);
2196                 np->tx_stop = 1;
2197                 spin_unlock_irqrestore(&np->lock, flags);
2198                 return NETDEV_TX_BUSY;
2199         }
2200
2201         start_tx = put_tx = np->put_tx.ex;
2202         start_tx_ctx = np->put_tx_ctx;
2203
2204         /* setup the header buffer */
2205         do {
2206                 prev_tx = put_tx;
2207                 prev_tx_ctx = np->put_tx_ctx;
2208                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2209                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2210                                                 PCI_DMA_TODEVICE);
2211                 np->put_tx_ctx->dma_len = bcnt;
2212                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2213                 put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2214                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2215
2216                 tx_flags = NV_TX2_VALID;
2217                 offset += bcnt;
2218                 size -= bcnt;
2219                 if (unlikely(put_tx++ == np->last_tx.ex))
2220                         put_tx = np->first_tx.ex;
2221                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2222                         np->put_tx_ctx = np->first_tx_ctx;
2223         } while (size);
2224
2225         /* setup the fragments */
2226         for (i = 0; i < fragments; i++) {
2227                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2228                 u32 size = frag->size;
2229                 offset = 0;
2230
2231                 do {
2232                         prev_tx = put_tx;
2233                         prev_tx_ctx = np->put_tx_ctx;
2234                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2235                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
2236                                                            PCI_DMA_TODEVICE);
2237                         np->put_tx_ctx->dma_len = bcnt;
2238                         put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2239                         put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2240                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2241
2242                         offset += bcnt;
2243                         size -= bcnt;
2244                         if (unlikely(put_tx++ == np->last_tx.ex))
2245                                 put_tx = np->first_tx.ex;
2246                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2247                                 np->put_tx_ctx = np->first_tx_ctx;
2248                 } while (size);
2249         }
2250
2251         /* set last fragment flag  */
2252         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2253
2254         /* save skb in this slot's context area */
2255         prev_tx_ctx->skb = skb;
2256
2257         if (skb_is_gso(skb))
2258                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2259         else
2260                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2261                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2262
2263         /* vlan tag */
2264         if (likely(!np->vlangrp)) {
2265                 start_tx->txvlan = 0;
2266         } else {
2267                 if (vlan_tx_tag_present(skb))
2268                         start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb));
2269                 else
2270                         start_tx->txvlan = 0;
2271         }
2272
2273         spin_lock_irqsave(&np->lock, flags);
2274
2275         if (np->tx_limit) {
2276                 /* Limit the number of outstanding tx. Setup all fragments, but
2277                  * do not set the VALID bit on the first descriptor. Save a pointer
2278                  * to that descriptor and also for next skb_map element.
2279                  */
2280
2281                 if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2282                         if (!np->tx_change_owner)
2283                                 np->tx_change_owner = start_tx_ctx;
2284
2285                         /* remove VALID bit */
2286                         tx_flags &= ~NV_TX2_VALID;
2287                         start_tx_ctx->first_tx_desc = start_tx;
2288                         start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2289                         np->tx_end_flip = np->put_tx_ctx;
2290                 } else {
2291                         np->tx_pkts_in_progress++;
2292                 }
2293         }
2294
2295         /* set tx flags */
2296         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2297         np->put_tx.ex = put_tx;
2298
2299         spin_unlock_irqrestore(&np->lock, flags);
2300
2301         dprintk(KERN_DEBUG "%s: nv_start_xmit_optimized: entries %d queued for transmission. tx_flags_extra: %x\n",
2302                 dev->name, entries, tx_flags_extra);
2303         {
2304                 int j;
2305                 for (j=0; j<64; j++) {
2306                         if ((j%16) == 0)
2307                                 dprintk("\n%03x:", j);
2308                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2309                 }
2310                 dprintk("\n");
2311         }
2312
2313         dev->trans_start = jiffies;
2314         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2315         return NETDEV_TX_OK;
2316 }
2317
2318 static inline void nv_tx_flip_ownership(struct net_device *dev)
2319 {
2320         struct fe_priv *np = netdev_priv(dev);
2321
2322         np->tx_pkts_in_progress--;
2323         if (np->tx_change_owner) {
2324                 np->tx_change_owner->first_tx_desc->flaglen |=
2325                         cpu_to_le32(NV_TX2_VALID);
2326                 np->tx_pkts_in_progress++;
2327
2328                 np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2329                 if (np->tx_change_owner == np->tx_end_flip)
2330                         np->tx_change_owner = NULL;
2331
2332                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2333         }
2334 }
2335
2336 /*
2337  * nv_tx_done: check for completed packets, release the skbs.
2338  *
2339  * Caller must own np->lock.
2340  */
2341 static void nv_tx_done(struct net_device *dev)
2342 {
2343         struct fe_priv *np = netdev_priv(dev);
2344         u32 flags;
2345         struct ring_desc* orig_get_tx = np->get_tx.orig;
2346
2347         while ((np->get_tx.orig != np->put_tx.orig) &&
2348                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID)) {
2349
2350                 dprintk(KERN_DEBUG "%s: nv_tx_done: flags 0x%x.\n",
2351                                         dev->name, flags);
2352
2353                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2354                                np->get_tx_ctx->dma_len,
2355                                PCI_DMA_TODEVICE);
2356                 np->get_tx_ctx->dma = 0;
2357
2358                 if (np->desc_ver == DESC_VER_1) {
2359                         if (flags & NV_TX_LASTPACKET) {
2360                                 if (flags & NV_TX_ERROR) {
2361                                         if (flags & NV_TX_UNDERFLOW)
2362                                                 dev->stats.tx_fifo_errors++;
2363                                         if (flags & NV_TX_CARRIERLOST)
2364                                                 dev->stats.tx_carrier_errors++;
2365                                         if ((flags & NV_TX_RETRYERROR) && !(flags & NV_TX_RETRYCOUNT_MASK))
2366                                                 nv_legacybackoff_reseed(dev);
2367                                         dev->stats.tx_errors++;
2368                                 } else {
2369                                         dev->stats.tx_packets++;
2370                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2371                                 }
2372                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2373                                 np->get_tx_ctx->skb = NULL;
2374                         }
2375                 } else {
2376                         if (flags & NV_TX2_LASTPACKET) {
2377                                 if (flags & NV_TX2_ERROR) {
2378                                         if (flags & NV_TX2_UNDERFLOW)
2379                                                 dev->stats.tx_fifo_errors++;
2380                                         if (flags & NV_TX2_CARRIERLOST)
2381                                                 dev->stats.tx_carrier_errors++;
2382                                         if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK))
2383                                                 nv_legacybackoff_reseed(dev);
2384                                         dev->stats.tx_errors++;
2385                                 } else {
2386                                         dev->stats.tx_packets++;
2387                                         dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
2388                                 }
2389                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
2390                                 np->get_tx_ctx->skb = NULL;
2391                         }
2392                 }
2393                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2394                         np->get_tx.orig = np->first_tx.orig;
2395                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2396                         np->get_tx_ctx = np->first_tx_ctx;
2397         }
2398         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2399                 np->tx_stop = 0;
2400                 netif_wake_queue(dev);
2401         }
2402 }
2403
2404 static void nv_tx_done_optimized(struct net_device *dev, int limit)
2405 {
2406         struct fe_priv *np = netdev_priv(dev);
2407         u32 flags;
2408         struct ring_desc_ex* orig_get_tx = np->get_tx.ex;
2409
2410         while ((np->get_tx.ex != np->put_tx.ex) &&
2411                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX_VALID) &&
2412                (limit-- > 0)) {
2413
2414                 dprintk(KERN_DEBUG "%s: nv_tx_done_optimized: flags 0x%x.\n",
2415                                         dev->name, flags);
2416
2417                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
2418                                np->get_tx_ctx->dma_len,
2419                                PCI_DMA_TODEVICE);
2420                 np->get_tx_ctx->dma = 0;
2421
2422                 if (flags & NV_TX2_LASTPACKET) {
2423                         if (!(flags & NV_TX2_ERROR))
2424                                 dev->stats.tx_packets++;
2425                         else {
2426                                 if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2427                                         if (np->driver_data & DEV_HAS_GEAR_MODE)
2428                                                 nv_gear_backoff_reseed(dev);
2429                                         else
2430                                                 nv_legacybackoff_reseed(dev);
2431                                 }
2432                         }
2433
2434                         dev_kfree_skb_any(np->get_tx_ctx->skb);
2435                         np->get_tx_ctx->skb = NULL;
2436
2437                         if (np->tx_limit) {
2438                                 nv_tx_flip_ownership(dev);
2439                         }
2440                 }
2441                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2442                         np->get_tx.ex = np->first_tx.ex;
2443                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2444                         np->get_tx_ctx = np->first_tx_ctx;
2445         }
2446         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2447                 np->tx_stop = 0;
2448                 netif_wake_queue(dev);
2449         }
2450 }
2451
2452 /*
2453  * nv_tx_timeout: dev->tx_timeout function
2454  * Called with netif_tx_lock held.
2455  */
2456 static void nv_tx_timeout(struct net_device *dev)
2457 {
2458         struct fe_priv *np = netdev_priv(dev);
2459         u8 __iomem *base = get_hwbase(dev);
2460         u32 status;
2461
2462         if (np->msi_flags & NV_MSI_X_ENABLED)
2463                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2464         else
2465                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2466
2467         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
2468
2469         {
2470                 int i;
2471
2472                 printk(KERN_INFO "%s: Ring at %lx\n",
2473                        dev->name, (unsigned long)np->ring_addr);
2474                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
2475                 for (i=0;i<=np->register_size;i+= 32) {
2476                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
2477                                         i,
2478                                         readl(base + i + 0), readl(base + i + 4),
2479                                         readl(base + i + 8), readl(base + i + 12),
2480                                         readl(base + i + 16), readl(base + i + 20),
2481                                         readl(base + i + 24), readl(base + i + 28));
2482                 }
2483                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
2484                 for (i=0;i<np->tx_ring_size;i+= 4) {
2485                         if (!nv_optimized(np)) {
2486                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
2487                                        i,
2488                                        le32_to_cpu(np->tx_ring.orig[i].buf),
2489                                        le32_to_cpu(np->tx_ring.orig[i].flaglen),
2490                                        le32_to_cpu(np->tx_ring.orig[i+1].buf),
2491                                        le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2492                                        le32_to_cpu(np->tx_ring.orig[i+2].buf),
2493                                        le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2494                                        le32_to_cpu(np->tx_ring.orig[i+3].buf),
2495                                        le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2496                         } else {
2497                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
2498                                        i,
2499                                        le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2500                                        le32_to_cpu(np->tx_ring.ex[i].buflow),
2501                                        le32_to_cpu(np->tx_ring.ex[i].flaglen),
2502                                        le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2503                                        le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2504                                        le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2505                                        le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2506                                        le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2507                                        le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2508                                        le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2509                                        le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2510                                        le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2511                         }
2512                 }
2513         }
2514
2515         spin_lock_irq(&np->lock);
2516
2517         /* 1) stop tx engine */
2518         nv_stop_tx(dev);
2519
2520         /* 2) check that the packets were not sent already: */
2521         if (!nv_optimized(np))
2522                 nv_tx_done(dev);
2523         else
2524                 nv_tx_done_optimized(dev, np->tx_ring_size);
2525
2526         /* 3) if there are dead entries: clear everything */
2527         if (np->get_tx_ctx != np->put_tx_ctx) {
2528                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
2529                 nv_drain_tx(dev);
2530                 nv_init_tx(dev);
2531                 setup_hw_rings(dev, NV_SETUP_TX_RING);
2532         }
2533
2534         netif_wake_queue(dev);
2535
2536         /* 4) restart tx engine */
2537         nv_start_tx(dev);
2538         spin_unlock_irq(&np->lock);
2539 }
2540
2541 /*
2542  * Called when the nic notices a mismatch between the actual data len on the
2543  * wire and the len indicated in the 802 header
2544  */
2545 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2546 {
2547         int hdrlen;     /* length of the 802 header */
2548         int protolen;   /* length as stored in the proto field */
2549
2550         /* 1) calculate len according to header */
2551         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2552                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
2553                 hdrlen = VLAN_HLEN;
2554         } else {
2555                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
2556                 hdrlen = ETH_HLEN;
2557         }
2558         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
2559                                 dev->name, datalen, protolen, hdrlen);
2560         if (protolen > ETH_DATA_LEN)
2561                 return datalen; /* Value in proto field not a len, no checks possible */
2562
2563         protolen += hdrlen;
2564         /* consistency checks: */
2565         if (datalen > ETH_ZLEN) {
2566                 if (datalen >= protolen) {
2567                         /* more data on wire than in 802 header, trim of
2568                          * additional data.
2569                          */
2570                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2571                                         dev->name, protolen);
2572                         return protolen;
2573                 } else {
2574                         /* less data on wire than mentioned in header.
2575                          * Discard the packet.
2576                          */
2577                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
2578                                         dev->name);
2579                         return -1;
2580                 }
2581         } else {
2582                 /* short packet. Accept only if 802 values are also short */
2583                 if (protolen > ETH_ZLEN) {
2584                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
2585                                         dev->name);
2586                         return -1;
2587                 }
2588                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2589                                 dev->name, datalen);
2590                 return datalen;
2591         }
2592 }
2593
2594 static int nv_rx_process(struct net_device *dev, int limit)
2595 {
2596         struct fe_priv *np = netdev_priv(dev);
2597         u32 flags;
2598         int rx_work = 0;
2599         struct sk_buff *skb;
2600         int len;
2601
2602         while((np->get_rx.orig != np->put_rx.orig) &&
2603               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2604                 (rx_work < limit)) {
2605
2606                 dprintk(KERN_DEBUG "%s: nv_rx_process: flags 0x%x.\n",
2607                                         dev->name, flags);
2608
2609                 /*
2610                  * the packet is for us - immediately tear down the pci mapping.
2611                  * TODO: check if a prefetch of the first cacheline improves
2612                  * the performance.
2613                  */
2614                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2615                                 np->get_rx_ctx->dma_len,
2616                                 PCI_DMA_FROMDEVICE);
2617                 skb = np->get_rx_ctx->skb;
2618                 np->get_rx_ctx->skb = NULL;
2619
2620                 {
2621                         int j;
2622                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2623                         for (j=0; j<64; j++) {
2624                                 if ((j%16) == 0)
2625                                         dprintk("\n%03x:", j);
2626                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2627                         }
2628                         dprintk("\n");
2629                 }
2630                 /* look at what we actually got: */
2631                 if (np->desc_ver == DESC_VER_1) {
2632                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2633                                 len = flags & LEN_MASK_V1;
2634                                 if (unlikely(flags & NV_RX_ERROR)) {
2635                                         if (flags & NV_RX_ERROR4) {
2636                                                 len = nv_getlen(dev, skb->data, len);
2637                                                 if (len < 0) {
2638                                                         dev->stats.rx_errors++;
2639                                                         dev_kfree_skb(skb);
2640                                                         goto next_pkt;
2641                                                 }
2642                                         }
2643                                         /* framing errors are soft errors */
2644                                         else if (flags & NV_RX_FRAMINGERR) {
2645                                                 if (flags & NV_RX_SUBSTRACT1) {
2646                                                         len--;
2647                                                 }
2648                                         }
2649                                         /* the rest are hard errors */
2650                                         else {
2651                                                 if (flags & NV_RX_MISSEDFRAME)
2652                                                         dev->stats.rx_missed_errors++;
2653                                                 if (flags & NV_RX_CRCERR)
2654                                                         dev->stats.rx_crc_errors++;
2655                                                 if (flags & NV_RX_OVERFLOW)
2656                                                         dev->stats.rx_over_errors++;
2657                                                 dev->stats.rx_errors++;
2658                                                 dev_kfree_skb(skb);
2659                                                 goto next_pkt;
2660                                         }
2661                                 }
2662                         } else {
2663                                 dev_kfree_skb(skb);
2664                                 goto next_pkt;
2665                         }
2666                 } else {
2667                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2668                                 len = flags & LEN_MASK_V2;
2669                                 if (unlikely(flags & NV_RX2_ERROR)) {
2670                                         if (flags & NV_RX2_ERROR4) {
2671                                                 len = nv_getlen(dev, skb->data, len);
2672                                                 if (len < 0) {
2673                                                         dev->stats.rx_errors++;
2674                                                         dev_kfree_skb(skb);
2675                                                         goto next_pkt;
2676                                                 }
2677                                         }
2678                                         /* framing errors are soft errors */
2679                                         else if (flags & NV_RX2_FRAMINGERR) {
2680                                                 if (flags & NV_RX2_SUBSTRACT1) {
2681                                                         len--;
2682                                                 }
2683                                         }
2684                                         /* the rest are hard errors */
2685                                         else {
2686                                                 if (flags & NV_RX2_CRCERR)
2687                                                         dev->stats.rx_crc_errors++;
2688                                                 if (flags & NV_RX2_OVERFLOW)
2689                                                         dev->stats.rx_over_errors++;
2690                                                 dev->stats.rx_errors++;
2691                                                 dev_kfree_skb(skb);
2692                                                 goto next_pkt;
2693                                         }
2694                                 }
2695                                 if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2696                                     ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2697                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2698                         } else {
2699                                 dev_kfree_skb(skb);
2700                                 goto next_pkt;
2701                         }
2702                 }
2703                 /* got a valid packet - forward it to the network core */
2704                 skb_put(skb, len);
2705                 skb->protocol = eth_type_trans(skb, dev);
2706                 dprintk(KERN_DEBUG "%s: nv_rx_process: %d bytes, proto %d accepted.\n",
2707                                         dev->name, len, skb->protocol);
2708 #ifdef CONFIG_FORCEDETH_NAPI
2709                 netif_receive_skb(skb);
2710 #else
2711                 netif_rx(skb);
2712 #endif
2713                 dev->last_rx = jiffies;
2714                 dev->stats.rx_packets++;
2715                 dev->stats.rx_bytes += len;
2716 next_pkt:
2717                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2718                         np->get_rx.orig = np->first_rx.orig;
2719                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2720                         np->get_rx_ctx = np->first_rx_ctx;
2721
2722                 rx_work++;
2723         }
2724
2725         return rx_work;
2726 }
2727
2728 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2729 {
2730         struct fe_priv *np = netdev_priv(dev);
2731         u32 flags;
2732         u32 vlanflags = 0;
2733         int rx_work = 0;
2734         struct sk_buff *skb;
2735         int len;
2736
2737         while((np->get_rx.ex != np->put_rx.ex) &&
2738               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2739               (rx_work < limit)) {
2740
2741                 dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: flags 0x%x.\n",
2742                                         dev->name, flags);
2743
2744                 /*
2745                  * the packet is for us - immediately tear down the pci mapping.
2746                  * TODO: check if a prefetch of the first cacheline improves
2747                  * the performance.
2748                  */
2749                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2750                                 np->get_rx_ctx->dma_len,
2751                                 PCI_DMA_FROMDEVICE);
2752                 skb = np->get_rx_ctx->skb;
2753                 np->get_rx_ctx->skb = NULL;
2754
2755                 {
2756                         int j;
2757                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2758                         for (j=0; j<64; j++) {
2759                                 if ((j%16) == 0)
2760                                         dprintk("\n%03x:", j);
2761                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2762                         }
2763                         dprintk("\n");
2764                 }
2765                 /* look at what we actually got: */
2766                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2767                         len = flags & LEN_MASK_V2;
2768                         if (unlikely(flags & NV_RX2_ERROR)) {
2769                                 if (flags & NV_RX2_ERROR4) {
2770                                         len = nv_getlen(dev, skb->data, len);
2771                                         if (len < 0) {
2772                                                 dev_kfree_skb(skb);
2773                                                 goto next_pkt;
2774                                         }
2775                                 }
2776                                 /* framing errors are soft errors */
2777                                 else if (flags & NV_RX2_FRAMINGERR) {
2778                                         if (flags & NV_RX2_SUBSTRACT1) {
2779                                                 len--;
2780                                         }
2781                                 }
2782                                 /* the rest are hard errors */
2783                                 else {
2784                                         dev_kfree_skb(skb);
2785                                         goto next_pkt;
2786                                 }
2787                         }
2788
2789                         if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2790                             ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2791                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2792
2793                         /* got a valid packet - forward it to the network core */
2794                         skb_put(skb, len);
2795                         skb->protocol = eth_type_trans(skb, dev);
2796                         prefetch(skb->data);
2797
2798                         dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: %d bytes, proto %d accepted.\n",
2799                                 dev->name, len, skb->protocol);
2800
2801                         if (likely(!np->vlangrp)) {
2802 #ifdef CONFIG_FORCEDETH_NAPI
2803                                 netif_receive_skb(skb);
2804 #else
2805                                 netif_rx(skb);
2806 #endif
2807                         } else {
2808                                 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2809                                 if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2810 #ifdef CONFIG_FORCEDETH_NAPI
2811                                         vlan_hwaccel_receive_skb(skb, np->vlangrp,
2812                                                                  vlanflags & NV_RX3_VLAN_TAG_MASK);
2813 #else
2814                                         vlan_hwaccel_rx(skb, np->vlangrp,
2815                                                         vlanflags & NV_RX3_VLAN_TAG_MASK);
2816 #endif
2817                                 } else {
2818 #ifdef CONFIG_FORCEDETH_NAPI
2819                                         netif_receive_skb(skb);
2820 #else
2821                                         netif_rx(skb);
2822 #endif
2823                                 }
2824                         }
2825
2826                         dev->last_rx = jiffies;
2827                         dev->stats.rx_packets++;
2828                         dev->stats.rx_bytes += len;
2829                 } else {
2830                         dev_kfree_skb(skb);
2831                 }
2832 next_pkt:
2833                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2834                         np->get_rx.ex = np->first_rx.ex;
2835                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2836                         np->get_rx_ctx = np->first_rx_ctx;
2837
2838                 rx_work++;
2839         }
2840
2841         return rx_work;
2842 }
2843
2844 static void set_bufsize(struct net_device *dev)
2845 {
2846         struct fe_priv *np = netdev_priv(dev);
2847
2848         if (dev->mtu <= ETH_DATA_LEN)
2849                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2850         else
2851                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2852 }
2853
2854 /*
2855  * nv_change_mtu: dev->change_mtu function
2856  * Called with dev_base_lock held for read.
2857  */
2858 static int nv_change_mtu(struct net_device *dev, int new_mtu)
2859 {
2860         struct fe_priv *np = netdev_priv(dev);
2861         int old_mtu;
2862
2863         if (new_mtu < 64 || new_mtu > np->pkt_limit)
2864                 return -EINVAL;
2865
2866         old_mtu = dev->mtu;
2867         dev->mtu = new_mtu;
2868
2869         /* return early if the buffer sizes will not change */
2870         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2871                 return 0;
2872         if (old_mtu == new_mtu)
2873                 return 0;
2874
2875         /* synchronized against open : rtnl_lock() held by caller */
2876         if (netif_running(dev)) {
2877                 u8 __iomem *base = get_hwbase(dev);
2878                 /*
2879                  * It seems that the nic preloads valid ring entries into an
2880                  * internal buffer. The procedure for flushing everything is
2881                  * guessed, there is probably a simpler approach.
2882                  * Changing the MTU is a rare event, it shouldn't matter.
2883                  */
2884                 nv_disable_irq(dev);
2885                 netif_tx_lock_bh(dev);
2886                 netif_addr_lock(dev);
2887                 spin_lock(&np->lock);
2888                 /* stop engines */
2889                 nv_stop_rxtx(dev);
2890                 nv_txrx_reset(dev);
2891                 /* drain rx queue */
2892                 nv_drain_rxtx(dev);
2893                 /* reinit driver view of the rx queue */
2894                 set_bufsize(dev);
2895                 if (nv_init_ring(dev)) {
2896                         if (!np->in_shutdown)
2897                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2898                 }
2899                 /* reinit nic view of the rx queue */
2900                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2901                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2902                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2903                         base + NvRegRingSizes);
2904                 pci_push(base);
2905                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2906                 pci_push(base);
2907
2908                 /* restart rx engine */
2909                 nv_start_rxtx(dev);
2910                 spin_unlock(&np->lock);
2911                 netif_addr_unlock(dev);
2912                 netif_tx_unlock_bh(dev);
2913                 nv_enable_irq(dev);
2914         }
2915         return 0;
2916 }
2917
2918 static void nv_copy_mac_to_hw(struct net_device *dev)
2919 {
2920         u8 __iomem *base = get_hwbase(dev);
2921         u32 mac[2];
2922
2923         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
2924                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
2925         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
2926
2927         writel(mac[0], base + NvRegMacAddrA);
2928         writel(mac[1], base + NvRegMacAddrB);
2929 }
2930
2931 /*
2932  * nv_set_mac_address: dev->set_mac_address function
2933  * Called with rtnl_lock() held.
2934  */
2935 static int nv_set_mac_address(struct net_device *dev, void *addr)
2936 {
2937         struct fe_priv *np = netdev_priv(dev);
2938         struct sockaddr *macaddr = (struct sockaddr*)addr;
2939
2940         if (!is_valid_ether_addr(macaddr->sa_data))
2941                 return -EADDRNOTAVAIL;
2942
2943         /* synchronized against open : rtnl_lock() held by caller */
2944         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
2945
2946         if (netif_running(dev)) {
2947                 netif_tx_lock_bh(dev);
2948                 netif_addr_lock(dev);
2949                 spin_lock_irq(&np->lock);
2950
2951                 /* stop rx engine */
2952                 nv_stop_rx(dev);
2953
2954                 /* set mac address */
2955                 nv_copy_mac_to_hw(dev);
2956
2957                 /* restart rx engine */
2958                 nv_start_rx(dev);
2959                 spin_unlock_irq(&np->lock);
2960                 netif_addr_unlock(dev);
2961                 netif_tx_unlock_bh(dev);
2962         } else {
2963                 nv_copy_mac_to_hw(dev);
2964         }
2965         return 0;
2966 }
2967
2968 /*
2969  * nv_set_multicast: dev->set_multicast function
2970  * Called with netif_tx_lock held.
2971  */
2972 static void nv_set_multicast(struct net_device *dev)
2973 {
2974         struct fe_priv *np = netdev_priv(dev);
2975         u8 __iomem *base = get_hwbase(dev);
2976         u32 addr[2];
2977         u32 mask[2];
2978         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
2979
2980         memset(addr, 0, sizeof(addr));
2981         memset(mask, 0, sizeof(mask));
2982
2983         if (dev->flags & IFF_PROMISC) {
2984                 pff |= NVREG_PFF_PROMISC;
2985         } else {
2986                 pff |= NVREG_PFF_MYADDR;
2987
2988                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
2989                         u32 alwaysOff[2];
2990                         u32 alwaysOn[2];
2991
2992                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
2993                         if (dev->flags & IFF_ALLMULTI) {
2994                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
2995                         } else {
2996                                 struct dev_mc_list *walk;
2997
2998                                 walk = dev->mc_list;
2999                                 while (walk != NULL) {
3000                                         u32 a, b;
3001                                         a = le32_to_cpu(*(__le32 *) walk->dmi_addr);
3002                                         b = le16_to_cpu(*(__le16 *) (&walk->dmi_addr[4]));
3003                                         alwaysOn[0] &= a;
3004                                         alwaysOff[0] &= ~a;
3005                                         alwaysOn[1] &= b;
3006                                         alwaysOff[1] &= ~b;
3007                                         walk = walk->next;
3008                                 }
3009                         }
3010                         addr[0] = alwaysOn[0];
3011                         addr[1] = alwaysOn[1];
3012                         mask[0] = alwaysOn[0] | alwaysOff[0];
3013                         mask[1] = alwaysOn[1] | alwaysOff[1];
3014                 } else {
3015                         mask[0] = NVREG_MCASTMASKA_NONE;
3016                         mask[1] = NVREG_MCASTMASKB_NONE;
3017                 }
3018         }
3019         addr[0] |= NVREG_MCASTADDRA_FORCE;
3020         pff |= NVREG_PFF_ALWAYS;
3021         spin_lock_irq(&np->lock);
3022         nv_stop_rx(dev);
3023         writel(addr[0], base + NvRegMulticastAddrA);
3024         writel(addr[1], base + NvRegMulticastAddrB);
3025         writel(mask[0], base + NvRegMulticastMaskA);
3026         writel(mask[1], base + NvRegMulticastMaskB);
3027         writel(pff, base + NvRegPacketFilterFlags);
3028         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
3029                 dev->name);
3030         nv_start_rx(dev);
3031         spin_unlock_irq(&np->lock);
3032 }
3033
3034 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3035 {
3036         struct fe_priv *np = netdev_priv(dev);
3037         u8 __iomem *base = get_hwbase(dev);
3038
3039         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3040
3041         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3042                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3043                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3044                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3045                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3046                 } else {
3047                         writel(pff, base + NvRegPacketFilterFlags);
3048                 }
3049         }
3050         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3051                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3052                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3053                         u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3054                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3055                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3056                         if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)
3057                                 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3058                         writel(pause_enable,  base + NvRegTxPauseFrame);
3059                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3060                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3061                 } else {
3062                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3063                         writel(regmisc, base + NvRegMisc1);
3064                 }
3065         }
3066 }
3067
3068 /**
3069  * nv_update_linkspeed: Setup the MAC according to the link partner
3070  * @dev: Network device to be configured
3071  *
3072  * The function queries the PHY and checks if there is a link partner.
3073  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3074  * set to 10 MBit HD.
3075  *
3076  * The function returns 0 if there is no link partner and 1 if there is
3077  * a good link partner.
3078  */
3079 static int nv_update_linkspeed(struct net_device *dev)
3080 {
3081         struct fe_priv *np = netdev_priv(dev);
3082         u8 __iomem *base = get_hwbase(dev);
3083         int adv = 0;
3084         int lpa = 0;
3085         int adv_lpa, adv_pause, lpa_pause;
3086         int newls = np->linkspeed;
3087         int newdup = np->duplex;
3088         int mii_status;
3089         int retval = 0;
3090         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3091         u32 txrxFlags = 0;
3092         u32 phy_exp;
3093
3094         /* BMSR_LSTATUS is latched, read it twice:
3095          * we want the current value.
3096          */
3097         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3098         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3099
3100         if (!(mii_status & BMSR_LSTATUS)) {
3101                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
3102                                 dev->name);
3103                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3104                 newdup = 0;
3105                 retval = 0;
3106                 goto set_speed;
3107         }
3108
3109         if (np->autoneg == 0) {
3110                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
3111                                 dev->name, np->fixed_mode);
3112                 if (np->fixed_mode & LPA_100FULL) {
3113                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3114                         newdup = 1;
3115                 } else if (np->fixed_mode & LPA_100HALF) {
3116                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3117                         newdup = 0;
3118                 } else if (np->fixed_mode & LPA_10FULL) {
3119                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3120                         newdup = 1;
3121                 } else {
3122                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3123                         newdup = 0;
3124                 }
3125                 retval = 1;
3126                 goto set_speed;
3127         }
3128         /* check auto negotiation is complete */
3129         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3130                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3131                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3132                 newdup = 0;
3133                 retval = 0;
3134                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
3135                 goto set_speed;
3136         }
3137
3138         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3139         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3140         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
3141                                 dev->name, adv, lpa);
3142
3143         retval = 1;
3144         if (np->gigabit == PHY_GIGABIT) {
3145                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3146                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3147
3148                 if ((control_1000 & ADVERTISE_1000FULL) &&
3149                         (status_1000 & LPA_1000FULL)) {
3150                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
3151                                 dev->name);
3152                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3153                         newdup = 1;
3154                         goto set_speed;
3155                 }
3156         }
3157
3158         /* FIXME: handle parallel detection properly */
3159         adv_lpa = lpa & adv;
3160         if (adv_lpa & LPA_100FULL) {
3161                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3162                 newdup = 1;
3163         } else if (adv_lpa & LPA_100HALF) {
3164                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3165                 newdup = 0;
3166         } else if (adv_lpa & LPA_10FULL) {
3167                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3168                 newdup = 1;
3169         } else if (adv_lpa & LPA_10HALF) {
3170                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3171                 newdup = 0;
3172         } else {
3173                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, adv_lpa);
3174                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3175                 newdup = 0;
3176         }
3177
3178 set_speed:
3179         if (np->duplex == newdup && np->linkspeed == newls)
3180                 return retval;
3181
3182         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
3183                         dev->name, np->linkspeed, np->duplex, newls, newdup);
3184
3185         np->duplex = newdup;
3186         np->linkspeed = newls;
3187
3188         /* The transmitter and receiver must be restarted for safe update */
3189         if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3190                 txrxFlags |= NV_RESTART_TX;
3191                 nv_stop_tx(dev);
3192         }
3193         if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3194                 txrxFlags |= NV_RESTART_RX;
3195                 nv_stop_rx(dev);
3196         }
3197
3198         if (np->gigabit == PHY_GIGABIT) {
3199                 phyreg = readl(base + NvRegSlotTime);
3200                 phyreg &= ~(0x3FF00);
3201                 if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3202                     ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3203                         phyreg |= NVREG_SLOTTIME_10_100_FULL;
3204                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3205                         phyreg |= NVREG_SLOTTIME_1000_FULL;
3206                 writel(phyreg, base + NvRegSlotTime);
3207         }
3208
3209         phyreg = readl(base + NvRegPhyInterface);
3210         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3211         if (np->duplex == 0)
3212                 phyreg |= PHY_HALF;
3213         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3214                 phyreg |= PHY_100;
3215         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3216                 phyreg |= PHY_1000;
3217         writel(phyreg, base + NvRegPhyInterface);
3218
3219         phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3220         if (phyreg & PHY_RGMII) {
3221                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3222                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3223                 } else {
3224                         if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3225                                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3226                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3227                                 else
3228                                         txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3229                         } else {
3230                                 txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3231                         }
3232                 }
3233         } else {
3234                 if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3235                         txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3236                 else
3237                         txreg = NVREG_TX_DEFERRAL_DEFAULT;
3238         }
3239         writel(txreg, base + NvRegTxDeferral);
3240
3241         if (np->desc_ver == DESC_VER_1) {
3242                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
3243         } else {
3244                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3245                         txreg = NVREG_TX_WM_DESC2_3_1000;
3246                 else
3247                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3248         }
3249         writel(txreg, base + NvRegTxWatermark);
3250
3251         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
3252                 base + NvRegMisc1);
3253         pci_push(base);
3254         writel(np->linkspeed, base + NvRegLinkSpeed);
3255         pci_push(base);
3256
3257         pause_flags = 0;
3258         /* setup pause frame */
3259         if (np->duplex != 0) {
3260                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3261                         adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
3262                         lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
3263
3264                         switch (adv_pause) {
3265                         case ADVERTISE_PAUSE_CAP:
3266                                 if (lpa_pause & LPA_PAUSE_CAP) {
3267                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3268                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3269                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3270                                 }
3271                                 break;
3272                         case ADVERTISE_PAUSE_ASYM:
3273                                 if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
3274                                 {
3275                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3276                                 }
3277                                 break;
3278                         case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
3279                                 if (lpa_pause & LPA_PAUSE_CAP)
3280                                 {
3281                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3282                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3283                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3284                                 }
3285                                 if (lpa_pause == LPA_PAUSE_ASYM)
3286                                 {
3287                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3288                                 }
3289                                 break;
3290                         }
3291                 } else {
3292                         pause_flags = np->pause_flags;
3293                 }
3294         }
3295         nv_update_pause(dev, pause_flags);
3296
3297         if (txrxFlags & NV_RESTART_TX)
3298                 nv_start_tx(dev);
3299         if (txrxFlags & NV_RESTART_RX)
3300                 nv_start_rx(dev);
3301
3302         return retval;
3303 }
3304
3305 static void nv_linkchange(struct net_device *dev)
3306 {
3307         if (nv_update_linkspeed(dev)) {
3308                 if (!netif_carrier_ok(dev)) {
3309                         netif_carrier_on(dev);
3310                         printk(KERN_INFO "%s: link up.\n", dev->name);
3311                         nv_start_rx(dev);
3312                 }
3313         } else {
3314                 if (netif_carrier_ok(dev)) {
3315                         netif_carrier_off(dev);
3316                         printk(KERN_INFO "%s: link down.\n", dev->name);
3317                         nv_stop_rx(dev);
3318                 }
3319         }
3320 }
3321
3322 static void nv_link_irq(struct net_device *dev)
3323 {
3324         u8 __iomem *base = get_hwbase(dev);
3325         u32 miistat;
3326
3327         miistat = readl(base + NvRegMIIStatus);
3328         writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3329         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
3330
3331         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3332                 nv_linkchange(dev);
3333         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
3334 }
3335
3336 static void nv_msi_workaround(struct fe_priv *np)
3337 {
3338
3339         /* Need to toggle the msi irq mask within the ethernet device,
3340          * otherwise, future interrupts will not be detected.
3341          */
3342         if (np->msi_flags & NV_MSI_ENABLED) {
3343                 u8 __iomem *base = np->base;
3344
3345                 writel(0, base + NvRegMSIIrqMask);
3346                 writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3347         }
3348 }
3349
3350 static irqreturn_t nv_nic_irq(int foo, void *data)
3351 {
3352         struct net_device *dev = (struct net_device *) data;
3353         struct fe_priv *np = netdev_priv(dev);
3354         u8 __iomem *base = get_hwbase(dev);
3355         u32 events;
3356         int i;
3357
3358         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
3359
3360         for (i=0; ; i++) {
3361                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3362                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3363                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3364                 } else {
3365                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3366                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3367                 }
3368                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3369                 if (!(events & np->irqmask))
3370                         break;
3371
3372                 nv_msi_workaround(np);
3373
3374                 spin_lock(&np->lock);
3375                 nv_tx_done(dev);
3376                 spin_unlock(&np->lock);
3377
3378 #ifdef CONFIG_FORCEDETH_NAPI
3379                 if (events & NVREG_IRQ_RX_ALL) {
3380                         netif_rx_schedule(dev, &np->napi);
3381
3382                         /* Disable furthur receive irq's */
3383                         spin_lock(&np->lock);
3384                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3385
3386                         if (np->msi_flags & NV_MSI_X_ENABLED)
3387                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3388                         else
3389                                 writel(np->irqmask, base + NvRegIrqMask);
3390                         spin_unlock(&np->lock);
3391                 }
3392 #else
3393                 if (nv_rx_process(dev, RX_WORK_PER_LOOP)) {
3394                         if (unlikely(nv_alloc_rx(dev))) {
3395                                 spin_lock(&np->lock);
3396                                 if (!np->in_shutdown)
3397                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3398                                 spin_unlock(&np->lock);
3399                         }
3400                 }
3401 #endif
3402                 if (unlikely(events & NVREG_IRQ_LINK)) {
3403                         spin_lock(&np->lock);
3404                         nv_link_irq(dev);
3405                         spin_unlock(&np->lock);
3406                 }
3407                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3408                         spin_lock(&np->lock);
3409                         nv_linkchange(dev);
3410                         spin_unlock(&np->lock);
3411                         np->link_timeout = jiffies + LINK_TIMEOUT;
3412                 }
3413                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3414                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3415                                                 dev->name, events);
3416                 }
3417                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3418                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3419                                                 dev->name, events);
3420                 }
3421                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3422                         spin_lock(&np->lock);
3423                         /* disable interrupts on the nic */
3424                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3425                                 writel(0, base + NvRegIrqMask);
3426                         else
3427                                 writel(np->irqmask, base + NvRegIrqMask);
3428                         pci_push(base);
3429
3430                         if (!np->in_shutdown) {
3431                                 np->nic_poll_irq = np->irqmask;
3432                                 np->recover_error = 1;
3433                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3434                         }
3435                         spin_unlock(&np->lock);
3436                         break;
3437                 }
3438                 if (unlikely(i > max_interrupt_work)) {
3439                         spin_lock(&np->lock);
3440                         /* disable interrupts on the nic */
3441                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3442                                 writel(0, base + NvRegIrqMask);
3443                         else
3444                                 writel(np->irqmask, base + NvRegIrqMask);
3445                         pci_push(base);
3446
3447                         if (!np->in_shutdown) {
3448                                 np->nic_poll_irq = np->irqmask;
3449                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3450                         }
3451                         spin_unlock(&np->lock);
3452                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3453                         break;
3454                 }
3455
3456         }
3457         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
3458
3459         return IRQ_RETVAL(i);
3460 }
3461
3462 /**
3463  * All _optimized functions are used to help increase performance
3464  * (reduce CPU and increase throughput). They use descripter version 3,
3465  * compiler directives, and reduce memory accesses.
3466  */
3467 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3468 {
3469         struct net_device *dev = (struct net_device *) data;
3470         struct fe_priv *np = netdev_priv(dev);
3471         u8 __iomem *base = get_hwbase(dev);
3472         u32 events;
3473         int i;
3474
3475         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
3476
3477         for (i=0; ; i++) {
3478                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3479                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3480                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
3481                 } else {
3482                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3483                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
3484                 }
3485                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3486                 if (!(events & np->irqmask))
3487                         break;
3488
3489                 nv_msi_workaround(np);
3490
3491                 spin_lock(&np->lock);
3492                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3493                 spin_unlock(&np->lock);
3494
3495 #ifdef CONFIG_FORCEDETH_NAPI
3496                 if (events & NVREG_IRQ_RX_ALL) {
3497                         netif_rx_schedule(dev, &np->napi);
3498
3499                         /* Disable furthur receive irq's */
3500                         spin_lock(&np->lock);
3501                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
3502
3503                         if (np->msi_flags & NV_MSI_X_ENABLED)
3504                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3505                         else
3506                                 writel(np->irqmask, base + NvRegIrqMask);
3507                         spin_unlock(&np->lock);
3508                 }
3509 #else
3510                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3511                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3512                                 spin_lock(&np->lock);
3513                                 if (!np->in_shutdown)
3514                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3515                                 spin_unlock(&np->lock);
3516                         }
3517                 }
3518 #endif
3519                 if (unlikely(events & NVREG_IRQ_LINK)) {
3520                         spin_lock(&np->lock);
3521                         nv_link_irq(dev);
3522                         spin_unlock(&np->lock);
3523                 }
3524                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3525                         spin_lock(&np->lock);
3526                         nv_linkchange(dev);
3527                         spin_unlock(&np->lock);
3528                         np->link_timeout = jiffies + LINK_TIMEOUT;
3529                 }
3530                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3531                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3532                                                 dev->name, events);
3533                 }
3534                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
3535                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3536                                                 dev->name, events);
3537                 }
3538                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
3539                         spin_lock(&np->lock);
3540                         /* disable interrupts on the nic */
3541                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3542                                 writel(0, base + NvRegIrqMask);
3543                         else
3544                                 writel(np->irqmask, base + NvRegIrqMask);
3545                         pci_push(base);
3546
3547                         if (!np->in_shutdown) {
3548                                 np->nic_poll_irq = np->irqmask;
3549                                 np->recover_error = 1;
3550                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3551                         }
3552                         spin_unlock(&np->lock);
3553                         break;
3554                 }
3555
3556                 if (unlikely(i > max_interrupt_work)) {
3557                         spin_lock(&np->lock);
3558                         /* disable interrupts on the nic */
3559                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
3560                                 writel(0, base + NvRegIrqMask);
3561                         else
3562                                 writel(np->irqmask, base + NvRegIrqMask);
3563                         pci_push(base);
3564
3565                         if (!np->in_shutdown) {
3566                                 np->nic_poll_irq = np->irqmask;
3567                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3568                         }
3569                         spin_unlock(&np->lock);
3570                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
3571                         break;
3572                 }
3573
3574         }
3575         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name);
3576
3577         return IRQ_RETVAL(i);
3578 }
3579
3580 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3581 {
3582         struct net_device *dev = (struct net_device *) data;
3583         struct fe_priv *np = netdev_priv(dev);
3584         u8 __iomem *base = get_hwbase(dev);
3585         u32 events;
3586         int i;
3587         unsigned long flags;
3588
3589         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
3590
3591         for (i=0; ; i++) {
3592                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3593                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
3594                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
3595                 if (!(events & np->irqmask))
3596                         break;
3597
3598                 spin_lock_irqsave(&np->lock, flags);
3599                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3600                 spin_unlock_irqrestore(&np->lock, flags);
3601
3602                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3603                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3604                                                 dev->name, events);
3605                 }
3606                 if (unlikely(i > max_interrupt_work)) {
3607                         spin_lock_irqsave(&np->lock, flags);
3608                         /* disable interrupts on the nic */
3609                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3610                         pci_push(base);
3611
3612                         if (!np->in_shutdown) {
3613                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3614                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3615                         }
3616                         spin_unlock_irqrestore(&np->lock, flags);
3617                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
3618                         break;
3619                 }
3620
3621         }
3622         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
3623
3624         return IRQ_RETVAL(i);
3625 }
3626
3627 #ifdef CONFIG_FORCEDETH_NAPI
3628 static int nv_napi_poll(struct napi_struct *napi, int budget)
3629 {
3630         struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3631         struct net_device *dev = np->dev;
3632         u8 __iomem *base = get_hwbase(dev);
3633         unsigned long flags;
3634         int pkts, retcode;
3635
3636         if (!nv_optimized(np)) {
3637                 pkts = nv_rx_process(dev, budget);
3638                 retcode = nv_alloc_rx(dev);
3639         } else {
3640                 pkts = nv_rx_process_optimized(dev, budget);
3641                 retcode = nv_alloc_rx_optimized(dev);
3642         }
3643
3644         if (retcode) {
3645                 spin_lock_irqsave(&np->lock, flags);
3646                 if (!np->in_shutdown)
3647                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3648                 spin_unlock_irqrestore(&np->lock, flags);
3649         }
3650
3651         if (pkts < budget) {
3652                 /* re-enable receive interrupts */
3653                 spin_lock_irqsave(&np->lock, flags);
3654
3655                 __netif_rx_complete(dev, napi);
3656
3657                 np->irqmask |= NVREG_IRQ_RX_ALL;
3658                 if (np->msi_flags & NV_MSI_X_ENABLED)
3659                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3660                 else
3661                         writel(np->irqmask, base + NvRegIrqMask);
3662
3663                 spin_unlock_irqrestore(&np->lock, flags);
3664         }
3665         return pkts;
3666 }
3667 #endif
3668
3669 #ifdef CONFIG_FORCEDETH_NAPI
3670 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3671 {
3672         struct net_device *dev = (struct net_device *) data;
3673         struct fe_priv *np = netdev_priv(dev);
3674         u8 __iomem *base = get_hwbase(dev);
3675         u32 events;
3676
3677         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3678         writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3679
3680         if (events) {
3681                 netif_rx_schedule(dev, &np->napi);
3682                 /* disable receive interrupts on the nic */
3683                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3684                 pci_push(base);
3685         }
3686         return IRQ_HANDLED;
3687 }
3688 #else
3689 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3690 {
3691         struct net_device *dev = (struct net_device *) data;
3692         struct fe_priv *np = netdev_priv(dev);
3693         u8 __iomem *base = get_hwbase(dev);
3694         u32 events;
3695         int i;
3696         unsigned long flags;
3697
3698         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
3699
3700         for (i=0; ; i++) {
3701                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3702                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3703                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
3704                 if (!(events & np->irqmask))
3705                         break;
3706
3707                 if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3708                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3709                                 spin_lock_irqsave(&np->lock, flags);
3710                                 if (!np->in_shutdown)
3711                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3712                                 spin_unlock_irqrestore(&np->lock, flags);
3713                         }
3714                 }
3715
3716                 if (unlikely(i > max_interrupt_work)) {
3717                         spin_lock_irqsave(&np->lock, flags);
3718                         /* disable interrupts on the nic */
3719                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3720                         pci_push(base);
3721
3722                         if (!np->in_shutdown) {
3723                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3724                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3725                         }
3726                         spin_unlock_irqrestore(&np->lock, flags);
3727                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
3728                         break;
3729                 }
3730         }
3731         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
3732
3733         return IRQ_RETVAL(i);
3734 }
3735 #endif
3736
3737 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3738 {
3739         struct net_device *dev = (struct net_device *) data;
3740         struct fe_priv *np = netdev_priv(dev);
3741         u8 __iomem *base = get_hwbase(dev);
3742         u32 events;
3743         int i;
3744         unsigned long flags;
3745
3746         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
3747
3748         for (i=0; ; i++) {
3749                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3750                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
3751                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3752                 if (!(events & np->irqmask))
3753                         break;
3754
3755                 /* check tx in case we reached max loop limit in tx isr */
3756                 spin_lock_irqsave(&np->lock, flags);
3757                 nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3758                 spin_unlock_irqrestore(&np->lock, flags);
3759
3760                 if (events & NVREG_IRQ_LINK) {
3761                         spin_lock_irqsave(&np->lock, flags);
3762                         nv_link_irq(dev);
3763                         spin_unlock_irqrestore(&np->lock, flags);
3764                 }
3765                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3766                         spin_lock_irqsave(&np->lock, flags);
3767                         nv_linkchange(dev);
3768                         spin_unlock_irqrestore(&np->lock, flags);
3769                         np->link_timeout = jiffies + LINK_TIMEOUT;
3770                 }
3771                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3772                         spin_lock_irq(&np->lock);
3773                         /* disable interrupts on the nic */
3774                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3775                         pci_push(base);
3776
3777                         if (!np->in_shutdown) {
3778                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3779                                 np->recover_error = 1;
3780                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3781                         }
3782                         spin_unlock_irq(&np->lock);
3783                         break;
3784                 }
3785                 if (events & (NVREG_IRQ_UNKNOWN)) {
3786                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3787                                                 dev->name, events);
3788                 }
3789                 if (unlikely(i > max_interrupt_work)) {
3790                         spin_lock_irqsave(&np->lock, flags);
3791                         /* disable interrupts on the nic */
3792                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3793                         pci_push(base);
3794
3795                         if (!np->in_shutdown) {
3796                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3797                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3798                         }
3799                         spin_unlock_irqrestore(&np->lock, flags);
3800                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
3801                         break;
3802                 }
3803
3804         }
3805         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
3806
3807         return IRQ_RETVAL(i);
3808 }
3809
3810 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3811 {
3812         struct net_device *dev = (struct net_device *) data;
3813         struct fe_priv *np = netdev_priv(dev);
3814         u8 __iomem *base = get_hwbase(dev);
3815         u32 events;
3816
3817         dprintk(KERN_DEBUG "%s: nv_nic_irq_test\n", dev->name);
3818
3819         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3820                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3821                 writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3822         } else {
3823                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3824                 writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3825         }
3826         pci_push(base);
3827         dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3828         if (!(events & NVREG_IRQ_TIMER))
3829                 return IRQ_RETVAL(0);
3830
3831         nv_msi_workaround(np);
3832
3833         spin_lock(&np->lock);
3834         np->intr_test = 1;
3835         spin_unlock(&np->lock);
3836
3837         dprintk(KERN_DEBUG "%s: nv_nic_irq_test completed\n", dev->name);
3838
3839         return IRQ_RETVAL(1);
3840 }
3841
3842 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3843 {
3844         u8 __iomem *base = get_hwbase(dev);
3845         int i;
3846         u32 msixmap = 0;
3847
3848         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3849          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3850          * the remaining 8 interrupts.
3851          */
3852         for (i = 0; i < 8; i++) {
3853                 if ((irqmask >> i) & 0x1) {
3854                         msixmap |= vector << (i << 2);
3855                 }
3856         }
3857         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3858
3859         msixmap = 0;
3860         for (i = 0; i < 8; i++) {
3861                 if ((irqmask >> (i + 8)) & 0x1) {
3862                         msixmap |= vector << (i << 2);
3863                 }
3864         }
3865         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3866 }
3867
3868 static int nv_request_irq(struct net_device *dev, int intr_test)
3869 {
3870         struct fe_priv *np = get_nvpriv(dev);
3871         u8 __iomem *base = get_hwbase(dev);
3872         int ret = 1;
3873         int i;
3874         irqreturn_t (*handler)(int foo, void *data);
3875
3876         if (intr_test) {
3877                 handler = nv_nic_irq_test;
3878         } else {
3879                 if (nv_optimized(np))
3880                         handler = nv_nic_irq_optimized;
3881                 else
3882                         handler = nv_nic_irq;
3883         }
3884
3885         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3886                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3887                         np->msi_x_entry[i].entry = i;
3888                 }
3889                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
3890                         np->msi_flags |= NV_MSI_X_ENABLED;
3891                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3892                                 /* Request irq for rx handling */
3893                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, IRQF_SHARED, dev->name, dev) != 0) {
3894                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
3895                                         pci_disable_msix(np->pci_dev);
3896                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3897                                         goto out_err;
3898                                 }
3899                                 /* Request irq for tx handling */
3900                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, IRQF_SHARED, dev->name, dev) != 0) {
3901                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
3902                                         pci_disable_msix(np->pci_dev);
3903                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3904                                         goto out_free_rx;
3905                                 }
3906                                 /* Request irq for link and timer handling */
3907                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, IRQF_SHARED, dev->name, dev) != 0) {
3908                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
3909                                         pci_disable_msix(np->pci_dev);
3910                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3911                                         goto out_free_tx;
3912                                 }
3913                                 /* map interrupts to their respective vector */
3914                                 writel(0, base + NvRegMSIXMap0);
3915                                 writel(0, base + NvRegMSIXMap1);
3916                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3917                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3918                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3919                         } else {
3920                                 /* Request irq for all interrupts */
3921                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3922                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3923                                         pci_disable_msix(np->pci_dev);
3924                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3925                                         goto out_err;
3926                                 }
3927
3928                                 /* map interrupts to vector 0 */
3929                                 writel(0, base + NvRegMSIXMap0);
3930                                 writel(0, base + NvRegMSIXMap1);
3931                         }
3932                 }
3933         }
3934         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3935                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
3936                         np->msi_flags |= NV_MSI_ENABLED;
3937                         dev->irq = np->pci_dev->irq;
3938                         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3939                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3940                                 pci_disable_msi(np->pci_dev);
3941                                 np->msi_flags &= ~NV_MSI_ENABLED;
3942                                 dev->irq = np->pci_dev->irq;
3943                                 goto out_err;
3944                         }
3945
3946                         /* map interrupts to vector 0 */
3947                         writel(0, base + NvRegMSIMap0);
3948                         writel(0, base + NvRegMSIMap1);
3949                         /* enable msi vector 0 */
3950                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3951                 }
3952         }
3953         if (ret != 0) {
3954                 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3955                         goto out_err;
3956
3957         }
3958
3959         return 0;
3960 out_free_tx:
3961         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
3962 out_free_rx:
3963         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
3964 out_err:
3965         return 1;
3966 }
3967
3968 static void nv_free_irq(struct net_device *dev)
3969 {
3970         struct fe_priv *np = get_nvpriv(dev);
3971         int i;
3972
3973         if (np->msi_flags & NV_MSI_X_ENABLED) {
3974                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3975                         free_irq(np->msi_x_entry[i].vector, dev);
3976                 }
3977                 pci_disable_msix(np->pci_dev);
3978                 np->msi_flags &= ~NV_MSI_X_ENABLED;
3979         } else {
3980                 free_irq(np->pci_dev->irq, dev);
3981                 if (np->msi_flags & NV_MSI_ENABLED) {
3982                         pci_disable_msi(np->pci_dev);
3983                         np->msi_flags &= ~NV_MSI_ENABLED;
3984                 }
3985         }
3986 }
3987
3988 static void nv_do_nic_poll(unsigned long data)
3989 {
3990         struct net_device *dev = (struct net_device *) data;
3991         struct fe_priv *np = netdev_priv(dev);
3992         u8 __iomem *base = get_hwbase(dev);
3993         u32 mask = 0;
3994
3995         /*
3996          * First disable irq(s) and then
3997          * reenable interrupts on the nic, we have to do this before calling
3998          * nv_nic_irq because that may decide to do otherwise
3999          */
4000
4001         if (!using_multi_irqs(dev)) {
4002                 if (np->msi_flags & NV_MSI_X_ENABLED)
4003                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4004                 else
4005                         disable_irq_lockdep(np->pci_dev->irq);
4006                 mask = np->irqmask;
4007         } else {
4008                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4009                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4010                         mask |= NVREG_IRQ_RX_ALL;
4011                 }
4012                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4013                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4014                         mask |= NVREG_IRQ_TX_ALL;
4015                 }
4016                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4017                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4018                         mask |= NVREG_IRQ_OTHER;
4019                 }
4020         }
4021         np->nic_poll_irq = 0;
4022
4023         /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
4024
4025         if (np->recover_error) {
4026                 np->recover_error = 0;
4027                 printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
4028                 if (netif_running(dev)) {
4029                         netif_tx_lock_bh(dev);
4030                         netif_addr_lock(dev);
4031                         spin_lock(&np->lock);
4032                         /* stop engines */
4033                         nv_stop_rxtx(dev);
4034                         nv_txrx_reset(dev);
4035                         /* drain rx queue */
4036                         nv_drain_rxtx(dev);
4037                         /* reinit driver view of the rx queue */
4038                         set_bufsize(dev);
4039                         if (nv_init_ring(dev)) {
4040                                 if (!np->in_shutdown)
4041                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4042                         }
4043                         /* reinit nic view of the rx queue */
4044                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4045                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4046                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4047                                 base + NvRegRingSizes);
4048                         pci_push(base);
4049                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4050                         pci_push(base);
4051
4052                         /* restart rx engine */
4053                         nv_start_rxtx(dev);
4054                         spin_unlock(&np->lock);
4055                         netif_addr_unlock(dev);
4056                         netif_tx_unlock_bh(dev);
4057                 }
4058         }
4059
4060
4061         writel(mask, base + NvRegIrqMask);
4062         pci_push(base);
4063
4064         if (!using_multi_irqs(dev)) {
4065                 if (nv_optimized(np))
4066                         nv_nic_irq_optimized(0, dev);
4067                 else
4068                         nv_nic_irq(0, dev);
4069                 if (np->msi_flags & NV_MSI_X_ENABLED)
4070                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
4071                 else
4072                         enable_irq_lockdep(np->pci_dev->irq);
4073         } else {
4074                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4075                         nv_nic_irq_rx(0, dev);
4076                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
4077                 }
4078                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4079                         nv_nic_irq_tx(0, dev);
4080                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
4081                 }
4082                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4083                         nv_nic_irq_other(0, dev);
4084                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
4085                 }
4086         }
4087 }
4088
4089 #ifdef CONFIG_NET_POLL_CONTROLLER
4090 static void nv_poll_controller(struct net_device *dev)
4091 {
4092         nv_do_nic_poll((unsigned long) dev);
4093 }
4094 #endif
4095
4096 static void nv_do_stats_poll(unsigned long data)
4097 {
4098         struct net_device *dev = (struct net_device *) data;
4099         struct fe_priv *np = netdev_priv(dev);
4100
4101         nv_get_hw_stats(dev);
4102
4103         if (!np->in_shutdown)
4104                 mod_timer(&np->stats_poll,
4105                         round_jiffies(jiffies + STATS_INTERVAL));
4106 }
4107
4108 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4109 {
4110         struct fe_priv *np = netdev_priv(dev);
4111         strcpy(info->driver, DRV_NAME);
4112         strcpy(info->version, FORCEDETH_VERSION);
4113         strcpy(info->bus_info, pci_name(np->pci_dev));
4114 }
4115
4116 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4117 {
4118         struct fe_priv *np = netdev_priv(dev);
4119         wolinfo->supported = WAKE_MAGIC;
4120
4121         spin_lock_irq(&np->lock);
4122         if (np->wolenabled)
4123                 wolinfo->wolopts = WAKE_MAGIC;
4124         spin_unlock_irq(&np->lock);
4125 }
4126
4127 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4128 {
4129         struct fe_priv *np = netdev_priv(dev);
4130         u8 __iomem *base = get_hwbase(dev);
4131         u32 flags = 0;
4132
4133         if (wolinfo->wolopts == 0) {
4134                 np->wolenabled = 0;
4135         } else if (wolinfo->wolopts & WAKE_MAGIC) {
4136                 np->wolenabled = 1;
4137                 flags = NVREG_WAKEUPFLAGS_ENABLE;
4138         }
4139         if (netif_running(dev)) {
4140                 spin_lock_irq(&np->lock);
4141                 writel(flags, base + NvRegWakeUpFlags);
4142                 spin_unlock_irq(&np->lock);
4143         }
4144         return 0;
4145 }
4146
4147 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4148 {
4149         struct fe_priv *np = netdev_priv(dev);
4150         int adv;
4151
4152         spin_lock_irq(&np->lock);
4153         ecmd->port = PORT_MII;
4154         if (!netif_running(dev)) {
4155                 /* We do not track link speed / duplex setting if the
4156                  * interface is disabled. Force a link check */
4157                 if (nv_update_linkspeed(dev)) {
4158                         if (!netif_carrier_ok(dev))
4159                                 netif_carrier_on(dev);
4160                 } else {
4161                         if (netif_carrier_ok(dev))
4162                                 netif_carrier_off(dev);
4163                 }
4164         }
4165
4166         if (netif_carrier_ok(dev)) {
4167                 switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4168                 case NVREG_LINKSPEED_10:
4169                         ecmd->speed = SPEED_10;
4170                         break;
4171                 case NVREG_LINKSPEED_100:
4172                         ecmd->speed = SPEED_100;
4173                         break;
4174                 case NVREG_LINKSPEED_1000:
4175                         ecmd->speed = SPEED_1000;
4176                         break;
4177                 }
4178                 ecmd->duplex = DUPLEX_HALF;
4179                 if (np->duplex)
4180                         ecmd->duplex = DUPLEX_FULL;
4181         } else {
4182                 ecmd->speed = -1;
4183                 ecmd->duplex = -1;
4184         }
4185
4186         ecmd->autoneg = np->autoneg;
4187
4188         ecmd->advertising = ADVERTISED_MII;
4189         if (np->autoneg) {
4190                 ecmd->advertising |= ADVERTISED_Autoneg;
4191                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4192                 if (adv & ADVERTISE_10HALF)
4193                         ecmd->advertising |= ADVERTISED_10baseT_Half;
4194                 if (adv & ADVERTISE_10FULL)
4195                         ecmd->advertising |= ADVERTISED_10baseT_Full;
4196                 if (adv & ADVERTISE_100HALF)
4197                         ecmd->advertising |= ADVERTISED_100baseT_Half;
4198                 if (adv & ADVERTISE_100FULL)
4199                         ecmd->advertising |= ADVERTISED_100baseT_Full;
4200                 if (np->gigabit == PHY_GIGABIT) {
4201                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4202                         if (adv & ADVERTISE_1000FULL)
4203                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
4204                 }
4205         }
4206         ecmd->supported = (SUPPORTED_Autoneg |
4207                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4208                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4209                 SUPPORTED_MII);
4210         if (np->gigabit == PHY_GIGABIT)
4211                 ecmd->supported |= SUPPORTED_1000baseT_Full;
4212
4213         ecmd->phy_address = np->phyaddr;
4214         ecmd->transceiver = XCVR_EXTERNAL;
4215
4216         /* ignore maxtxpkt, maxrxpkt for now */
4217         spin_unlock_irq(&np->lock);
4218         return 0;
4219 }
4220
4221 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4222 {
4223         struct fe_priv *np = netdev_priv(dev);
4224
4225         if (ecmd->port != PORT_MII)
4226                 return -EINVAL;
4227         if (ecmd->transceiver != XCVR_EXTERNAL)
4228                 return -EINVAL;
4229         if (ecmd->phy_address != np->phyaddr) {
4230                 /* TODO: support switching between multiple phys. Should be
4231                  * trivial, but not enabled due to lack of test hardware. */
4232                 return -EINVAL;
4233         }
4234         if (ecmd->autoneg == AUTONEG_ENABLE) {
4235                 u32 mask;
4236
4237                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4238                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4239                 if (np->gigabit == PHY_GIGABIT)
4240                         mask |= ADVERTISED_1000baseT_Full;
4241
4242                 if ((ecmd->advertising & mask) == 0)
4243                         return -EINVAL;
4244
4245         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
4246                 /* Note: autonegotiation disable, speed 1000 intentionally
4247                  * forbidden - noone should need that. */
4248
4249                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
4250                         return -EINVAL;
4251                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4252                         return -EINVAL;
4253         } else {
4254                 return -EINVAL;
4255         }
4256
4257         netif_carrier_off(dev);
4258         if (netif_running(dev)) {
4259                 unsigned long flags;
4260
4261                 nv_disable_irq(dev);
4262                 netif_tx_lock_bh(dev);
4263                 netif_addr_lock(dev);
4264                 /* with plain spinlock lockdep complains */
4265                 spin_lock_irqsave(&np->lock, flags);
4266                 /* stop engines */
4267                 /* FIXME:
4268                  * this can take some time, and interrupts are disabled
4269                  * due to spin_lock_irqsave, but let's hope no daemon
4270                  * is going to change the settings very often...
4271                  * Worst case:
4272                  * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4273                  * + some minor delays, which is up to a second approximately
4274                  */
4275                 nv_stop_rxtx(dev);
4276                 spin_unlock_irqrestore(&np->lock, flags);
4277                 netif_addr_unlock(dev);
4278                 netif_tx_unlock_bh(dev);
4279         }
4280
4281         if (ecmd->autoneg == AUTONEG_ENABLE) {
4282                 int adv, bmcr;
4283
4284                 np->autoneg = 1;
4285
4286                 /* advertise only what has been requested */
4287                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4288                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4289                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
4290                         adv |= ADVERTISE_10HALF;
4291                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
4292                         adv |= ADVERTISE_10FULL;
4293                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
4294                         adv |= ADVERTISE_100HALF;
4295                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
4296                         adv |= ADVERTISE_100FULL;
4297                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisments but disable tx pause */
4298                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4299                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4300                         adv |=  ADVERTISE_PAUSE_ASYM;
4301                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4302
4303                 if (np->gigabit == PHY_GIGABIT) {
4304                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4305                         adv &= ~ADVERTISE_1000FULL;
4306                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4307                                 adv |= ADVERTISE_1000FULL;
4308                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4309                 }
4310
4311                 if (netif_running(dev))
4312                         printk(KERN_INFO "%s: link down.\n", dev->name);
4313                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4314                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4315                         bmcr |= BMCR_ANENABLE;
4316                         /* reset the phy in order for settings to stick,
4317                          * and cause autoneg to start */
4318                         if (phy_reset(dev, bmcr)) {
4319                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4320                                 return -EINVAL;
4321                         }
4322                 } else {
4323                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4324                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4325                 }
4326         } else {
4327                 int adv, bmcr;
4328
4329                 np->autoneg = 0;
4330
4331                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4332                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4333                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4334                         adv |= ADVERTISE_10HALF;
4335                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4336                         adv |= ADVERTISE_10FULL;
4337                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4338                         adv |= ADVERTISE_100HALF;
4339                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4340                         adv |= ADVERTISE_100FULL;
4341                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4342                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
4343                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4344                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4345                 }
4346                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4347                         adv |=  ADVERTISE_PAUSE_ASYM;
4348                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4349                 }
4350                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4351                 np->fixed_mode = adv;
4352
4353                 if (np->gigabit == PHY_GIGABIT) {
4354                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4355                         adv &= ~ADVERTISE_1000FULL;
4356                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4357                 }
4358
4359                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4360                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4361                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4362                         bmcr |= BMCR_FULLDPLX;
4363                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4364                         bmcr |= BMCR_SPEED100;
4365                 if (np->phy_oui == PHY_OUI_MARVELL) {
4366                         /* reset the phy in order for forced mode settings to stick */
4367                         if (phy_reset(dev, bmcr)) {
4368                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4369                                 return -EINVAL;
4370                         }
4371                 } else {
4372                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4373                         if (netif_running(dev)) {
4374                                 /* Wait a bit and then reconfigure the nic. */
4375                                 udelay(10);
4376                                 nv_linkchange(dev);
4377                         }
4378                 }
4379         }
4380
4381         if (netif_running(dev)) {
4382                 nv_start_rxtx(dev);
4383                 nv_enable_irq(dev);
4384         }
4385
4386         return 0;
4387 }
4388
4389 #define FORCEDETH_REGS_VER      1
4390
4391 static int nv_get_regs_len(struct net_device *dev)
4392 {
4393         struct fe_priv *np = netdev_priv(dev);
4394         return np->register_size;
4395 }
4396
4397 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4398 {
4399         struct fe_priv *np = netdev_priv(dev);
4400         u8 __iomem *base = get_hwbase(dev);
4401         u32 *rbuf = buf;
4402         int i;
4403
4404         regs->version = FORCEDETH_REGS_VER;
4405         spin_lock_irq(&np->lock);
4406         for (i = 0;i <= np->register_size/sizeof(u32); i++)
4407                 rbuf[i] = readl(base + i*sizeof(u32));
4408         spin_unlock_irq(&np->lock);
4409 }
4410
4411 static int nv_nway_reset(struct net_device *dev)
4412 {
4413         struct fe_priv *np = netdev_priv(dev);
4414         int ret;
4415
4416         if (np->autoneg) {
4417                 int bmcr;
4418
4419                 netif_carrier_off(dev);
4420                 if (netif_running(dev)) {
4421                         nv_disable_irq(dev);
4422                         netif_tx_lock_bh(dev);
4423                         netif_addr_lock(dev);
4424                         spin_lock(&np->lock);
4425                         /* stop engines */
4426                         nv_stop_rxtx(dev);
4427                         spin_unlock(&np->lock);
4428                         netif_addr_unlock(dev);
4429                         netif_tx_unlock_bh(dev);
4430                         printk(KERN_INFO "%s: link down.\n", dev->name);
4431                 }
4432
4433                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4434                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4435                         bmcr |= BMCR_ANENABLE;
4436                         /* reset the phy in order for settings to stick*/
4437                         if (phy_reset(dev, bmcr)) {
4438                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
4439                                 return -EINVAL;
4440                         }
4441                 } else {
4442                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4443                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4444                 }
4445
4446                 if (netif_running(dev)) {
4447                         nv_start_rxtx(dev);
4448                         nv_enable_irq(dev);
4449                 }
4450                 ret = 0;
4451         } else {
4452                 ret = -EINVAL;
4453         }
4454
4455         return ret;
4456 }
4457
4458 static int nv_set_tso(struct net_device *dev, u32 value)
4459 {
4460         struct fe_priv *np = netdev_priv(dev);
4461
4462         if ((np->driver_data & DEV_HAS_CHECKSUM))
4463                 return ethtool_op_set_tso(dev, value);
4464         else
4465                 return -EOPNOTSUPP;
4466 }
4467
4468 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4469 {
4470         struct fe_priv *np = netdev_priv(dev);
4471
4472         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4473         ring->rx_mini_max_pending = 0;
4474         ring->rx_jumbo_max_pending = 0;
4475         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4476
4477         ring->rx_pending = np->rx_ring_size;
4478         ring->rx_mini_pending = 0;
4479         ring->rx_jumbo_pending = 0;
4480         ring->tx_pending = np->tx_ring_size;
4481 }
4482
4483 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4484 {
4485         struct fe_priv *np = netdev_priv(dev);
4486         u8 __iomem *base = get_hwbase(dev);
4487         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4488         dma_addr_t ring_addr;
4489
4490         if (ring->rx_pending < RX_RING_MIN ||
4491             ring->tx_pending < TX_RING_MIN ||
4492             ring->rx_mini_pending != 0 ||
4493             ring->rx_jumbo_pending != 0 ||
4494             (np->desc_ver == DESC_VER_1 &&
4495              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4496               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4497             (np->desc_ver != DESC_VER_1 &&
4498              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4499               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4500                 return -EINVAL;
4501         }
4502
4503         /* allocate new rings */
4504         if (!nv_optimized(np)) {
4505                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4506                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4507                                             &ring_addr);
4508         } else {
4509                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
4510                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4511                                             &ring_addr);
4512         }
4513         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4514         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4515         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4516                 /* fall back to old rings */
4517                 if (!nv_optimized(np)) {
4518                         if (rxtx_ring)
4519                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4520                                                     rxtx_ring, ring_addr);
4521                 } else {
4522                         if (rxtx_ring)
4523                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4524                                                     rxtx_ring, ring_addr);
4525                 }
4526                 if (rx_skbuff)
4527                         kfree(rx_skbuff);
4528                 if (tx_skbuff)
4529                         kfree(tx_skbuff);
4530                 goto exit;
4531         }
4532
4533         if (netif_running(dev)) {
4534                 nv_disable_irq(dev);
4535                 netif_tx_lock_bh(dev);
4536                 netif_addr_lock(dev);
4537                 spin_lock(&np->lock);
4538                 /* stop engines */
4539                 nv_stop_rxtx(dev);
4540                 nv_txrx_reset(dev);
4541                 /* drain queues */
4542                 nv_drain_rxtx(dev);
4543                 /* delete queues */
4544                 free_rings(dev);
4545         }
4546
4547         /* set new values */
4548         np->rx_ring_size = ring->rx_pending;
4549         np->tx_ring_size = ring->tx_pending;
4550
4551         if (!nv_optimized(np)) {
4552                 np->rx_ring.orig = (struct ring_desc*)rxtx_ring;
4553                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4554         } else {
4555                 np->rx_ring.ex = (struct ring_desc_ex*)rxtx_ring;
4556                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4557         }
4558         np->rx_skb = (struct nv_skb_map*)rx_skbuff;
4559         np->tx_skb = (struct nv_skb_map*)tx_skbuff;
4560         np->ring_addr = ring_addr;
4561
4562         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4563         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4564
4565         if (netif_running(dev)) {
4566                 /* reinit driver view of the queues */
4567                 set_bufsize(dev);
4568                 if (nv_init_ring(dev)) {
4569                         if (!np->in_shutdown)
4570                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4571                 }
4572
4573                 /* reinit nic view of the queues */
4574                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4575                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4576                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4577                         base + NvRegRingSizes);
4578                 pci_push(base);
4579                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4580                 pci_push(base);
4581
4582                 /* restart engines */
4583                 nv_start_rxtx(dev);
4584                 spin_unlock(&np->lock);
4585                 netif_addr_unlock(dev);
4586                 netif_tx_unlock_bh(dev);
4587                 nv_enable_irq(dev);
4588         }
4589         return 0;
4590 exit:
4591         return -ENOMEM;
4592 }
4593
4594 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4595 {
4596         struct fe_priv *np = netdev_priv(dev);
4597
4598         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4599         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4600         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4601 }
4602
4603 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4604 {
4605         struct fe_priv *np = netdev_priv(dev);
4606         int adv, bmcr;
4607
4608         if ((!np->autoneg && np->duplex == 0) ||
4609             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4610                 printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
4611                        dev->name);
4612                 return -EINVAL;
4613         }
4614         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4615                 printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
4616                 return -EINVAL;
4617         }
4618
4619         netif_carrier_off(dev);
4620         if (netif_running(dev)) {
4621                 nv_disable_irq(dev);
4622                 netif_tx_lock_bh(dev);
4623                 netif_addr_lock(dev);
4624                 spin_lock(&np->lock);
4625                 /* stop engines */
4626                 nv_stop_rxtx(dev);
4627                 spin_unlock(&np->lock);
4628                 netif_addr_unlock(dev);
4629                 netif_tx_unlock_bh(dev);
4630         }
4631
4632         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4633         if (pause->rx_pause)
4634                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4635         if (pause->tx_pause)
4636                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4637
4638         if (np->autoneg && pause->autoneg) {
4639                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4640
4641                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4642                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4643                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
4644                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4645                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4646                         adv |=  ADVERTISE_PAUSE_ASYM;
4647                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4648
4649                 if (netif_running(dev))
4650                         printk(KERN_INFO "%s: link down.\n", dev->name);
4651                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4652                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4653                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4654         } else {
4655                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4656                 if (pause->rx_pause)
4657                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4658                 if (pause->tx_pause)
4659                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4660
4661                 if (!netif_running(dev))
4662                         nv_update_linkspeed(dev);
4663                 else
4664                         nv_update_pause(dev, np->pause_flags);
4665         }
4666
4667         if (netif_running(dev)) {
4668                 nv_start_rxtx(dev);
4669                 nv_enable_irq(dev);
4670         }
4671         return 0;
4672 }
4673
4674 static u32 nv_get_rx_csum(struct net_device *dev)
4675 {
4676         struct fe_priv *np = netdev_priv(dev);
4677         return (np->rx_csum) != 0;
4678 }
4679
4680 static int nv_set_rx_csum(struct net_device *dev, u32 data)
4681 {
4682         struct fe_priv *np = netdev_priv(dev);
4683         u8 __iomem *base = get_hwbase(dev);
4684         int retcode = 0;
4685
4686         if (np->driver_data & DEV_HAS_CHECKSUM) {
4687                 if (data) {
4688                         np->rx_csum = 1;
4689                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4690                 } else {
4691                         np->rx_csum = 0;
4692                         /* vlan is dependent on rx checksum offload */
4693                         if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
4694                                 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4695                 }
4696                 if (netif_running(dev)) {
4697                         spin_lock_irq(&np->lock);
4698                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4699                         spin_unlock_irq(&np->lock);
4700                 }
4701         } else {
4702                 return -EINVAL;
4703         }
4704
4705         return retcode;
4706 }
4707
4708 static int nv_set_tx_csum(struct net_device *dev, u32 data)
4709 {
4710         struct fe_priv *np = netdev_priv(dev);
4711
4712         if (np->driver_data & DEV_HAS_CHECKSUM)
4713                 return ethtool_op_set_tx_hw_csum(dev, data);
4714         else
4715                 return -EOPNOTSUPP;
4716 }
4717
4718 static int nv_set_sg(struct net_device *dev, u32 data)
4719 {
4720         struct fe_priv *np = netdev_priv(dev);
4721
4722         if (np->driver_data & DEV_HAS_CHECKSUM)
4723                 return ethtool_op_set_sg(dev, data);
4724         else
4725                 return -EOPNOTSUPP;
4726 }
4727
4728 static int nv_get_sset_count(struct net_device *dev, int sset)
4729 {
4730         struct fe_priv *np = netdev_priv(dev);
4731
4732         switch (sset) {
4733         case ETH_SS_TEST:
4734                 if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4735                         return NV_TEST_COUNT_EXTENDED;
4736                 else
4737                         return NV_TEST_COUNT_BASE;
4738         case ETH_SS_STATS:
4739                 if (np->driver_data & DEV_HAS_STATISTICS_V1)
4740                         return NV_DEV_STATISTICS_V1_COUNT;
4741                 else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4742                         return NV_DEV_STATISTICS_V2_COUNT;
4743                 else
4744                         return 0;
4745         default:
4746                 return -EOPNOTSUPP;
4747         }
4748 }
4749
4750 static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
4751 {
4752         struct fe_priv *np = netdev_priv(dev);
4753
4754         /* update stats */
4755         nv_do_stats_poll((unsigned long)dev);
4756
4757         memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4758 }
4759
4760 static int nv_link_test(struct net_device *dev)
4761 {
4762         struct fe_priv *np = netdev_priv(dev);
4763         int mii_status;
4764
4765         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4766         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4767
4768         /* check phy link status */
4769         if (!(mii_status & BMSR_LSTATUS))
4770                 return 0;
4771         else
4772                 return 1;
4773 }
4774
4775 static int nv_register_test(struct net_device *dev)
4776 {
4777         u8 __iomem *base = get_hwbase(dev);
4778         int i = 0;
4779         u32 orig_read, new_read;
4780
4781         do {
4782                 orig_read = readl(base + nv_registers_test[i].reg);
4783
4784                 /* xor with mask to toggle bits */
4785                 orig_read ^= nv_registers_test[i].mask;
4786
4787                 writel(orig_read, base + nv_registers_test[i].reg);
4788
4789                 new_read = readl(base + nv_registers_test[i].reg);
4790
4791                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4792                         return 0;
4793
4794                 /* restore original value */
4795                 orig_read ^= nv_registers_test[i].mask;
4796                 writel(orig_read, base + nv_registers_test[i].reg);
4797
4798         } while (nv_registers_test[++i].reg != 0);
4799
4800         return 1;
4801 }
4802
4803 static int nv_interrupt_test(struct net_device *dev)
4804 {
4805         struct fe_priv *np = netdev_priv(dev);
4806         u8 __iomem *base = get_hwbase(dev);
4807         int ret = 1;
4808         int testcnt;
4809         u32 save_msi_flags, save_poll_interval = 0;
4810
4811         if (netif_running(dev)) {
4812                 /* free current irq */
4813                 nv_free_irq(dev);
4814                 save_poll_interval = readl(base+NvRegPollingInterval);
4815         }
4816
4817         /* flag to test interrupt handler */
4818         np->intr_test = 0;
4819
4820         /* setup test irq */
4821         save_msi_flags = np->msi_flags;
4822         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4823         np->msi_flags |= 0x001; /* setup 1 vector */
4824         if (nv_request_irq(dev, 1))
4825                 return 0;
4826
4827         /* setup timer interrupt */
4828         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4829         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4830
4831         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4832
4833         /* wait for at least one interrupt */
4834         msleep(100);
4835
4836         spin_lock_irq(&np->lock);
4837
4838         /* flag should be set within ISR */
4839         testcnt = np->intr_test;
4840         if (!testcnt)
4841                 ret = 2;
4842
4843         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4844         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4845                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4846         else
4847                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4848
4849         spin_unlock_irq(&np->lock);
4850
4851         nv_free_irq(dev);
4852
4853         np->msi_flags = save_msi_flags;
4854
4855         if (netif_running(dev)) {
4856                 writel(save_poll_interval, base + NvRegPollingInterval);
4857                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4858                 /* restore original irq */
4859                 if (nv_request_irq(dev, 0))
4860                         return 0;
4861         }
4862
4863         return ret;
4864 }
4865
4866 static int nv_loopback_test(struct net_device *dev)
4867 {
4868         struct fe_priv *np = netdev_priv(dev);
4869         u8 __iomem *base = get_hwbase(dev);
4870         struct sk_buff *tx_skb, *rx_skb;
4871         dma_addr_t test_dma_addr;
4872         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4873         u32 flags;
4874         int len, i, pkt_len;
4875         u8 *pkt_data;
4876         u32 filter_flags = 0;
4877         u32 misc1_flags = 0;
4878         int ret = 1;
4879
4880         if (netif_running(dev)) {
4881                 nv_disable_irq(dev);
4882                 filter_flags = readl(base + NvRegPacketFilterFlags);
4883                 misc1_flags = readl(base + NvRegMisc1);
4884         } else {
4885                 nv_txrx_reset(dev);
4886         }
4887
4888         /* reinit driver view of the rx queue */
4889         set_bufsize(dev);
4890         nv_init_ring(dev);
4891
4892         /* setup hardware for loopback */
4893         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
4894         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
4895
4896         /* reinit nic view of the rx queue */
4897         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4898         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4899         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4900                 base + NvRegRingSizes);
4901         pci_push(base);
4902
4903         /* restart rx engine */
4904         nv_start_rxtx(dev);
4905
4906         /* setup packet for tx */
4907         pkt_len = ETH_DATA_LEN;
4908         tx_skb = dev_alloc_skb(pkt_len);
4909         if (!tx_skb) {
4910                 printk(KERN_ERR "dev_alloc_skb() failed during loopback test"
4911                          " of %s\n", dev->name);
4912                 ret = 0;
4913                 goto out;
4914         }
4915         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
4916                                        skb_tailroom(tx_skb),
4917                                        PCI_DMA_FROMDEVICE);
4918         pkt_data = skb_put(tx_skb, pkt_len);
4919         for (i = 0; i < pkt_len; i++)
4920                 pkt_data[i] = (u8)(i & 0xff);
4921
4922         if (!nv_optimized(np)) {
4923                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
4924                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4925         } else {
4926                 np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
4927                 np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
4928                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4929         }
4930         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4931         pci_push(get_hwbase(dev));
4932
4933         msleep(500);
4934
4935         /* check for rx of the packet */
4936         if (!nv_optimized(np)) {
4937                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
4938                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
4939
4940         } else {
4941                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
4942                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
4943         }
4944
4945         if (flags & NV_RX_AVAIL) {
4946                 ret = 0;
4947         } else if (np->desc_ver == DESC_VER_1) {
4948                 if (flags & NV_RX_ERROR)
4949                         ret = 0;
4950         } else {
4951                 if (flags & NV_RX2_ERROR) {
4952                         ret = 0;
4953                 }
4954         }
4955
4956         if (ret) {
4957                 if (len != pkt_len) {
4958                         ret = 0;
4959                         dprintk(KERN_DEBUG "%s: loopback len mismatch %d vs %d\n",
4960                                 dev->name, len, pkt_len);
4961                 } else {
4962                         rx_skb = np->rx_skb[0].skb;
4963                         for (i = 0; i < pkt_len; i++) {
4964                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
4965                                         ret = 0;
4966                                         dprintk(KERN_DEBUG "%s: loopback pattern check failed on byte %d\n",
4967                                                 dev->name, i);
4968                                         break;
4969                                 }
4970                         }
4971                 }
4972         } else {
4973                 dprintk(KERN_DEBUG "%s: loopback - did not receive test packet\n", dev->name);
4974         }
4975
4976         pci_unmap_page(np->pci_dev, test_dma_addr,
4977                        (skb_end_pointer(tx_skb) - tx_skb->data),
4978                        PCI_DMA_TODEVICE);
4979         dev_kfree_skb_any(tx_skb);
4980  out:
4981         /* stop engines */
4982         nv_stop_rxtx(dev);
4983         nv_txrx_reset(dev);
4984         /* drain rx queue */
4985         nv_drain_rxtx(dev);
4986
4987         if (netif_running(dev)) {
4988                 writel(misc1_flags, base + NvRegMisc1);
4989                 writel(filter_flags, base + NvRegPacketFilterFlags);
4990                 nv_enable_irq(dev);
4991         }
4992
4993         return ret;
4994 }
4995
4996 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
4997 {
4998         struct fe_priv *np = netdev_priv(dev);
4999         u8 __iomem *base = get_hwbase(dev);
5000         int result;
5001         memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
5002
5003         if (!nv_link_test(dev)) {
5004                 test->flags |= ETH_TEST_FL_FAILED;
5005                 buffer[0] = 1;
5006         }
5007
5008         if (test->flags & ETH_TEST_FL_OFFLINE) {
5009                 if (netif_running(dev)) {
5010                         netif_stop_queue(dev);
5011 #ifdef CONFIG_FORCEDETH_NAPI
5012                         napi_disable(&np->napi);
5013 #endif
5014                         netif_tx_lock_bh(dev);
5015                         netif_addr_lock(dev);
5016                         spin_lock_irq(&np->lock);
5017                         nv_disable_hw_interrupts(dev, np->irqmask);
5018                         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
5019                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5020                         } else {
5021                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5022                         }
5023                         /* stop engines */
5024                         nv_stop_rxtx(dev);
5025                         nv_txrx_reset(dev);
5026                         /* drain rx queue */
5027                         nv_drain_rxtx(dev);
5028                         spin_unlock_irq(&np->lock);
5029                         netif_addr_unlock(dev);
5030                         netif_tx_unlock_bh(dev);
5031                 }
5032
5033                 if (!nv_register_test(dev)) {
5034                         test->flags |= ETH_TEST_FL_FAILED;
5035                         buffer[1] = 1;
5036                 }
5037
5038                 result = nv_interrupt_test(dev);
5039                 if (result != 1) {
5040                         test->flags |= ETH_TEST_FL_FAILED;
5041                         buffer[2] = 1;
5042                 }
5043                 if (result == 0) {
5044                         /* bail out */
5045                         return;
5046                 }
5047
5048                 if (!nv_loopback_test(dev)) {
5049                         test->flags |= ETH_TEST_FL_FAILED;
5050                         buffer[3] = 1;
5051                 }
5052
5053                 if (netif_running(dev)) {
5054                         /* reinit driver view of the rx queue */
5055                         set_bufsize(dev);
5056                         if (nv_init_ring(dev)) {
5057                                 if (!np->in_shutdown)
5058                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5059                         }
5060                         /* reinit nic view of the rx queue */
5061                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5062                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5063                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5064                                 base + NvRegRingSizes);
5065                         pci_push(base);
5066                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5067                         pci_push(base);
5068                         /* restart rx engine */
5069                         nv_start_rxtx(dev);
5070                         netif_start_queue(dev);
5071 #ifdef CONFIG_FORCEDETH_NAPI
5072                         napi_enable(&np->napi);
5073 #endif
5074                         nv_enable_hw_interrupts(dev, np->irqmask);
5075                 }
5076         }
5077 }
5078
5079 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5080 {
5081         switch (stringset) {
5082         case ETH_SS_STATS:
5083                 memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5084                 break;
5085         case ETH_SS_TEST:
5086                 memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5087                 break;
5088         }
5089 }
5090
5091 static const struct ethtool_ops ops = {
5092         .get_drvinfo = nv_get_drvinfo,
5093         .get_link = ethtool_op_get_link,
5094         .get_wol = nv_get_wol,
5095         .set_wol = nv_set_wol,
5096         .get_settings = nv_get_settings,
5097         .set_settings = nv_set_settings,
5098         .get_regs_len = nv_get_regs_len,
5099         .get_regs = nv_get_regs,
5100         .nway_reset = nv_nway_reset,
5101         .set_tso = nv_set_tso,
5102         .get_ringparam = nv_get_ringparam,
5103         .set_ringparam = nv_set_ringparam,
5104         .get_pauseparam = nv_get_pauseparam,
5105         .set_pauseparam = nv_set_pauseparam,
5106         .get_rx_csum = nv_get_rx_csum,
5107         .set_rx_csum = nv_set_rx_csum,
5108         .set_tx_csum = nv_set_tx_csum,
5109         .set_sg = nv_set_sg,
5110         .get_strings = nv_get_strings,
5111         .get_ethtool_stats = nv_get_ethtool_stats,
5112         .get_sset_count = nv_get_sset_count,
5113         .self_test = nv_self_test,
5114 };
5115
5116 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
5117 {
5118         struct fe_priv *np = get_nvpriv(dev);
5119
5120         spin_lock_irq(&np->lock);
5121
5122         /* save vlan group */
5123         np->vlangrp = grp;
5124
5125         if (grp) {
5126                 /* enable vlan on MAC */
5127                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
5128         } else {
5129                 /* disable vlan on MAC */
5130                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
5131                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
5132         }
5133
5134         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5135
5136         spin_unlock_irq(&np->lock);
5137 }
5138
5139 /* The mgmt unit and driver use a semaphore to access the phy during init */
5140 static int nv_mgmt_acquire_sema(struct net_device *dev)
5141 {
5142         u8 __iomem *base = get_hwbase(dev);
5143         int i;
5144         u32 tx_ctrl, mgmt_sema;
5145
5146         for (i = 0; i < 10; i++) {
5147                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5148                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5149                         break;
5150                 msleep(500);
5151         }
5152
5153         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5154                 return 0;
5155
5156         for (i = 0; i < 2; i++) {
5157                 tx_ctrl = readl(base + NvRegTransmitterControl);
5158                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5159                 writel(tx_ctrl, base + NvRegTransmitterControl);
5160
5161                 /* verify that semaphore was acquired */
5162                 tx_ctrl = readl(base + NvRegTransmitterControl);
5163                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5164                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE))
5165                         return 1;
5166                 else
5167                         udelay(50);
5168         }
5169
5170         return 0;
5171 }
5172
5173 static int nv_open(struct net_device *dev)
5174 {
5175         struct fe_priv *np = netdev_priv(dev);
5176         u8 __iomem *base = get_hwbase(dev);
5177         int ret = 1;
5178         int oom, i;
5179         u32 low;
5180
5181         dprintk(KERN_DEBUG "nv_open: begin\n");
5182
5183         /* erase previous misconfiguration */
5184         if (np->driver_data & DEV_HAS_POWER_CNTRL)
5185                 nv_mac_reset(dev);
5186         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5187         writel(0, base + NvRegMulticastAddrB);
5188         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5189         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5190         writel(0, base + NvRegPacketFilterFlags);
5191
5192         writel(0, base + NvRegTransmitterControl);
5193         writel(0, base + NvRegReceiverControl);
5194
5195         writel(0, base + NvRegAdapterControl);
5196
5197         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5198                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5199
5200         /* initialize descriptor rings */
5201         set_bufsize(dev);
5202         oom = nv_init_ring(dev);
5203
5204         writel(0, base + NvRegLinkSpeed);
5205         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5206         nv_txrx_reset(dev);
5207         writel(0, base + NvRegUnknownSetupReg6);
5208
5209         np->in_shutdown = 0;
5210
5211         /* give hw rings */
5212         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5213         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5214                 base + NvRegRingSizes);
5215
5216         writel(np->linkspeed, base + NvRegLinkSpeed);
5217         if (np->desc_ver == DESC_VER_1)
5218                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5219         else
5220                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5221         writel(np->txrxctl_bits, base + NvRegTxRxControl);
5222         writel(np->vlanctl_bits, base + NvRegVlanControl);
5223         pci_push(base);
5224         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5225         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5226                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
5227                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
5228
5229         writel(0, base + NvRegMIIMask);
5230         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5231         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5232
5233         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5234         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5235         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5236         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5237
5238         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5239
5240         get_random_bytes(&low, sizeof(low));
5241         low &= NVREG_SLOTTIME_MASK;
5242         if (np->desc_ver == DESC_VER_1) {
5243                 writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5244         } else {
5245                 if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5246                         /* setup legacy backoff */
5247                         writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5248                 } else {
5249                         writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5250                         nv_gear_backoff_reseed(dev);
5251                 }
5252         }
5253         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5254         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5255         if (poll_interval == -1) {
5256                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5257                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5258                 else
5259                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5260         }
5261         else
5262                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5263         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5264         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5265                         base + NvRegAdapterControl);
5266         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5267         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5268         if (np->wolenabled)
5269                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5270
5271         i = readl(base + NvRegPowerState);
5272         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
5273                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5274
5275         pci_push(base);
5276         udelay(10);
5277         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5278
5279         nv_disable_hw_interrupts(dev, np->irqmask);
5280         pci_push(base);
5281         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5282         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5283         pci_push(base);
5284
5285         if (nv_request_irq(dev, 0)) {
5286                 goto out_drain;
5287         }
5288
5289         /* ask for interrupts */
5290         nv_enable_hw_interrupts(dev, np->irqmask);
5291
5292         spin_lock_irq(&np->lock);
5293         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5294         writel(0, base + NvRegMulticastAddrB);
5295         writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5296         writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5297         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5298         /* One manual link speed update: Interrupts are enabled, future link
5299          * speed changes cause interrupts and are handled by nv_link_irq().
5300          */
5301         {
5302                 u32 miistat;
5303                 miistat = readl(base + NvRegMIIStatus);
5304                 writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5305                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
5306         }
5307         /* set linkspeed to invalid value, thus force nv_update_linkspeed
5308          * to init hw */
5309         np->linkspeed = 0;
5310         ret = nv_update_linkspeed(dev);
5311         nv_start_rxtx(dev);
5312         netif_start_queue(dev);
5313 #ifdef CONFIG_FORCEDETH_NAPI
5314         napi_enable(&np->napi);
5315 #endif
5316
5317         if (ret) {
5318                 netif_carrier_on(dev);
5319         } else {
5320                 printk(KERN_INFO "%s: no link during initialization.\n", dev->name);
5321                 netif_carrier_off(dev);
5322         }
5323         if (oom)
5324                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5325
5326         /* start statistics timer */
5327         if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2))
5328                 mod_timer(&np->stats_poll,
5329                         round_jiffies(jiffies + STATS_INTERVAL));
5330
5331         spin_unlock_irq(&np->lock);
5332
5333         return 0;
5334 out_drain:
5335         nv_drain_rxtx(dev);
5336         return ret;
5337 }
5338
5339 static int nv_close(struct net_device *dev)
5340 {
5341         struct fe_priv *np = netdev_priv(dev);
5342         u8 __iomem *base;
5343
5344         spin_lock_irq(&np->lock);
5345         np->in_shutdown = 1;
5346         spin_unlock_irq(&np->lock);
5347 #ifdef CONFIG_FORCEDETH_NAPI
5348         napi_disable(&np->napi);
5349 #endif
5350         synchronize_irq(np->pci_dev->irq);
5351
5352         del_timer_sync(&np->oom_kick);
5353         del_timer_sync(&np->nic_poll);
5354         del_timer_sync(&np->stats_poll);
5355
5356         netif_stop_queue(dev);
5357         spin_lock_irq(&np->lock);
5358         nv_stop_rxtx(dev);
5359         nv_txrx_reset(dev);
5360
5361         /* disable interrupts on the nic or we will lock up */
5362         base = get_hwbase(dev);
5363         nv_disable_hw_interrupts(dev, np->irqmask);
5364         pci_push(base);
5365         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
5366
5367         spin_unlock_irq(&np->lock);
5368
5369         nv_free_irq(dev);
5370
5371         nv_drain_rxtx(dev);
5372
5373         if (np->wolenabled) {
5374                 writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5375                 nv_start_rx(dev);
5376         }
5377
5378         /* FIXME: power down nic */
5379
5380         return 0;
5381 }
5382
5383 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5384 {
5385         struct net_device *dev;
5386         struct fe_priv *np;
5387         unsigned long addr;
5388         u8 __iomem *base;
5389         int err, i;
5390         u32 powerstate, txreg;
5391         u32 phystate_orig = 0, phystate;
5392         int phyinitialized = 0;
5393         DECLARE_MAC_BUF(mac);
5394         static int printed_version;
5395
5396         if (!printed_version++)
5397                 printk(KERN_INFO "%s: Reverse Engineered nForce ethernet"
5398                        " driver. Version %s.\n", DRV_NAME, FORCEDETH_VERSION);
5399
5400         dev = alloc_etherdev(sizeof(struct fe_priv));
5401         err = -ENOMEM;
5402         if (!dev)
5403                 goto out;
5404
5405         np = netdev_priv(dev);
5406         np->dev = dev;
5407         np->pci_dev = pci_dev;
5408         spin_lock_init(&np->lock);
5409         SET_NETDEV_DEV(dev, &pci_dev->dev);
5410
5411         init_timer(&np->oom_kick);
5412         np->oom_kick.data = (unsigned long) dev;
5413         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
5414         init_timer(&np->nic_poll);
5415         np->nic_poll.data = (unsigned long) dev;
5416         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
5417         init_timer(&np->stats_poll);
5418         np->stats_poll.data = (unsigned long) dev;
5419         np->stats_poll.function = &nv_do_stats_poll;    /* timer handler */
5420
5421         err = pci_enable_device(pci_dev);
5422         if (err)
5423                 goto out_free;
5424
5425         pci_set_master(pci_dev);
5426
5427         err = pci_request_regions(pci_dev, DRV_NAME);
5428         if (err < 0)
5429                 goto out_disable;
5430
5431         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2))
5432                 np->register_size = NV_PCI_REGSZ_VER3;
5433         else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5434                 np->register_size = NV_PCI_REGSZ_VER2;
5435         else
5436                 np->register_size = NV_PCI_REGSZ_VER1;
5437
5438         err = -EINVAL;
5439         addr = 0;
5440         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5441                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
5442                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
5443                                 pci_resource_len(pci_dev, i),
5444                                 pci_resource_flags(pci_dev, i));
5445                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5446                                 pci_resource_len(pci_dev, i) >= np->register_size) {
5447                         addr = pci_resource_start(pci_dev, i);
5448                         break;
5449                 }
5450         }
5451         if (i == DEVICE_COUNT_RESOURCE) {
5452                 dev_printk(KERN_INFO, &pci_dev->dev,
5453                            "Couldn't find register window\n");
5454                 goto out_relreg;
5455         }
5456
5457         /* copy of driver data */
5458         np->driver_data = id->driver_data;
5459         /* copy of device id */
5460         np->device_id = id->device;
5461
5462         /* handle different descriptor versions */
5463         if (id->driver_data & DEV_HAS_HIGH_DMA) {
5464                 /* packet format 3: supports 40-bit addressing */
5465                 np->desc_ver = DESC_VER_3;
5466                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5467                 if (dma_64bit) {
5468                         if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK))
5469                                 dev_printk(KERN_INFO, &pci_dev->dev,
5470                                         "64-bit DMA failed, using 32-bit addressing\n");
5471                         else
5472                                 dev->features |= NETIF_F_HIGHDMA;
5473                         if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
5474                                 dev_printk(KERN_INFO, &pci_dev->dev,
5475                                         "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5476                         }
5477                 }
5478         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
5479                 /* packet format 2: supports jumbo frames */
5480                 np->desc_ver = DESC_VER_2;
5481                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5482         } else {
5483                 /* original packet format */
5484                 np->desc_ver = DESC_VER_1;
5485                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5486         }
5487
5488         np->pkt_limit = NV_PKTLIMIT_1;
5489         if (id->driver_data & DEV_HAS_LARGEDESC)
5490                 np->pkt_limit = NV_PKTLIMIT_2;
5491
5492         if (id->driver_data & DEV_HAS_CHECKSUM) {
5493                 np->rx_csum = 1;
5494                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5495                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
5496                 dev->features |= NETIF_F_TSO;
5497         }
5498
5499         np->vlanctl_bits = 0;
5500         if (id->driver_data & DEV_HAS_VLAN) {
5501                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5502                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
5503                 dev->vlan_rx_register = nv_vlan_rx_register;
5504         }
5505
5506         np->msi_flags = 0;
5507         if ((id->driver_data & DEV_HAS_MSI) && msi) {
5508                 np->msi_flags |= NV_MSI_CAPABLE;
5509         }
5510         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5511                 np->msi_flags |= NV_MSI_X_CAPABLE;
5512         }
5513
5514         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5515         if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5516             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5517             (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5518                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5519         }
5520
5521
5522         err = -ENOMEM;
5523         np->base = ioremap(addr, np->register_size);
5524         if (!np->base)
5525                 goto out_relreg;
5526         dev->base_addr = (unsigned long)np->base;
5527
5528         dev->irq = pci_dev->irq;
5529
5530         np->rx_ring_size = RX_RING_DEFAULT;
5531         np->tx_ring_size = TX_RING_DEFAULT;
5532
5533         if (!nv_optimized(np)) {
5534                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5535                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5536                                         &np->ring_addr);
5537                 if (!np->rx_ring.orig)
5538                         goto out_unmap;
5539                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5540         } else {
5541                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5542                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5543                                         &np->ring_addr);
5544                 if (!np->rx_ring.ex)
5545                         goto out_unmap;
5546                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5547         }
5548         np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5549         np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5550         if (!np->rx_skb || !np->tx_skb)
5551                 goto out_freering;
5552
5553         dev->open = nv_open;
5554         dev->stop = nv_close;
5555
5556         if (!nv_optimized(np))
5557                 dev->hard_start_xmit = nv_start_xmit;
5558         else
5559                 dev->hard_start_xmit = nv_start_xmit_optimized;
5560         dev->get_stats = nv_get_stats;
5561         dev->change_mtu = nv_change_mtu;
5562         dev->set_mac_address = nv_set_mac_address;
5563         dev->set_multicast_list = nv_set_multicast;
5564 #ifdef CONFIG_NET_POLL_CONTROLLER
5565         dev->poll_controller = nv_poll_controller;
5566 #endif
5567 #ifdef CONFIG_FORCEDETH_NAPI
5568         netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5569 #endif
5570         SET_ETHTOOL_OPS(dev, &ops);
5571         dev->tx_timeout = nv_tx_timeout;
5572         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5573
5574         pci_set_drvdata(pci_dev, dev);
5575
5576         /* read the mac address */
5577         base = get_hwbase(dev);
5578         np->orig_mac[0] = readl(base + NvRegMacAddrA);
5579         np->orig_mac[1] = readl(base + NvRegMacAddrB);
5580
5581         /* check the workaround bit for correct mac address order */
5582         txreg = readl(base + NvRegTransmitPoll);
5583         if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5584                 /* mac address is already in correct order */
5585                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5586                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5587                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5588                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5589                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5590                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5591         } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5592                 /* mac address is already in correct order */
5593                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5594                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5595                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5596                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5597                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5598                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5599                 /*
5600                  * Set orig mac address back to the reversed version.
5601                  * This flag will be cleared during low power transition.
5602                  * Therefore, we should always put back the reversed address.
5603                  */
5604                 np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5605                         (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5606                 np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5607         } else {
5608                 /* need to reverse mac address to correct order */
5609                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5610                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5611                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5612                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5613                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5614                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5615                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5616         }
5617         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
5618
5619         if (!is_valid_ether_addr(dev->perm_addr)) {
5620                 /*
5621                  * Bad mac address. At least one bios sets the mac address
5622                  * to 01:23:45:67:89:ab
5623                  */
5624                 dev_printk(KERN_ERR, &pci_dev->dev,
5625                         "Invalid Mac address detected: %s\n",
5626                         print_mac(mac, dev->dev_addr));
5627                 dev_printk(KERN_ERR, &pci_dev->dev,
5628                         "Please complain to your hardware vendor. Switching to a random MAC.\n");
5629                 dev->dev_addr[0] = 0x00;
5630                 dev->dev_addr[1] = 0x00;
5631                 dev->dev_addr[2] = 0x6c;
5632                 get_random_bytes(&dev->dev_addr[3], 3);
5633         }
5634
5635         dprintk(KERN_DEBUG "%s: MAC Address %s\n",
5636                 pci_name(pci_dev), print_mac(mac, dev->dev_addr));
5637
5638         /* set mac address */
5639         nv_copy_mac_to_hw(dev);
5640
5641         /* Workaround current PCI init glitch:  wakeup bits aren't
5642          * being set from PCI PM capability.
5643          */
5644         device_init_wakeup(&pci_dev->dev, 1);
5645
5646         /* disable WOL */
5647         writel(0, base + NvRegWakeUpFlags);
5648         np->wolenabled = 0;
5649
5650         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5651
5652                 /* take phy and nic out of low power mode */
5653                 powerstate = readl(base + NvRegPowerState2);
5654                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5655                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
5656                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
5657                     pci_dev->revision >= 0xA3)
5658                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5659                 writel(powerstate, base + NvRegPowerState2);
5660         }
5661
5662         if (np->desc_ver == DESC_VER_1) {
5663                 np->tx_flags = NV_TX_VALID;
5664         } else {
5665                 np->tx_flags = NV_TX2_VALID;
5666         }
5667         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
5668                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5669                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5670                         np->msi_flags |= 0x0003;
5671         } else {
5672                 np->irqmask = NVREG_IRQMASK_CPU;
5673                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5674                         np->msi_flags |= 0x0001;
5675         }
5676
5677         if (id->driver_data & DEV_NEED_TIMERIRQ)
5678                 np->irqmask |= NVREG_IRQ_TIMER;
5679         if (id->driver_data & DEV_NEED_LINKTIMER) {
5680                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
5681                 np->need_linktimer = 1;
5682                 np->link_timeout = jiffies + LINK_TIMEOUT;
5683         } else {
5684                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
5685                 np->need_linktimer = 0;
5686         }
5687
5688         /* Limit the number of tx's outstanding for hw bug */
5689         if (id->driver_data & DEV_NEED_TX_LIMIT) {
5690                 np->tx_limit = 1;
5691                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_32 ||
5692                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_33 ||
5693                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_34 ||
5694                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_35 ||
5695                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_36 ||
5696                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_37 ||
5697                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_38 ||
5698                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_39) &&
5699                     pci_dev->revision >= 0xA2)
5700                         np->tx_limit = 0;
5701         }
5702
5703         /* clear phy state and temporarily halt phy interrupts */
5704         writel(0, base + NvRegMIIMask);
5705         phystate = readl(base + NvRegAdapterControl);
5706         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5707                 phystate_orig = 1;
5708                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5709                 writel(phystate, base + NvRegAdapterControl);
5710         }
5711         writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5712
5713         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5714                 /* management unit running on the mac? */
5715                 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) {
5716                         np->mac_in_use = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST;
5717                         dprintk(KERN_INFO "%s: mgmt unit is running. mac in use %x.\n", pci_name(pci_dev), np->mac_in_use);
5718                         if (nv_mgmt_acquire_sema(dev)) {
5719                                 /* management unit setup the phy already? */
5720                                 if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5721                                     NVREG_XMITCTL_SYNC_PHY_INIT) {
5722                                         /* phy is inited by mgmt unit */
5723                                         phyinitialized = 1;
5724                                         dprintk(KERN_INFO "%s: Phy already initialized by mgmt unit.\n", pci_name(pci_dev));
5725                                 } else {
5726                                         /* we need to init the phy */
5727                                 }
5728                         }
5729                 }
5730         }
5731
5732         /* find a suitable phy */
5733         for (i = 1; i <= 32; i++) {
5734                 int id1, id2;
5735                 int phyaddr = i & 0x1F;
5736
5737                 spin_lock_irq(&np->lock);
5738                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5739                 spin_unlock_irq(&np->lock);
5740                 if (id1 < 0 || id1 == 0xffff)
5741                         continue;
5742                 spin_lock_irq(&np->lock);
5743                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5744                 spin_unlock_irq(&np->lock);
5745                 if (id2 < 0 || id2 == 0xffff)
5746                         continue;
5747
5748                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5749                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5750                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5751                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
5752                         pci_name(pci_dev), id1, id2, phyaddr);
5753                 np->phyaddr = phyaddr;
5754                 np->phy_oui = id1 | id2;
5755
5756                 /* Realtek hardcoded phy id1 to all zero's on certain phys */
5757                 if (np->phy_oui == PHY_OUI_REALTEK2)
5758                         np->phy_oui = PHY_OUI_REALTEK;
5759                 /* Setup phy revision for Realtek */
5760                 if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5761                         np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5762
5763                 break;
5764         }
5765         if (i == 33) {
5766                 dev_printk(KERN_INFO, &pci_dev->dev,
5767                         "open: Could not find a valid PHY.\n");
5768                 goto out_error;
5769         }
5770
5771         if (!phyinitialized) {
5772                 /* reset it */
5773                 phy_init(dev);
5774         } else {
5775                 /* see if it is a gigabit phy */
5776                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5777                 if (mii_status & PHY_GIGABIT) {
5778                         np->gigabit = PHY_GIGABIT;
5779                 }
5780         }
5781
5782         /* set default link speed settings */
5783         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5784         np->duplex = 0;
5785         np->autoneg = 1;
5786
5787         err = register_netdev(dev);
5788         if (err) {
5789                 dev_printk(KERN_INFO, &pci_dev->dev,
5790                            "unable to register netdev: %d\n", err);
5791                 goto out_error;
5792         }
5793
5794         dev_printk(KERN_INFO, &pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, "
5795                    "addr %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
5796                    dev->name,
5797                    np->phy_oui,
5798                    np->phyaddr,
5799                    dev->dev_addr[0],
5800                    dev->dev_addr[1],
5801                    dev->dev_addr[2],
5802                    dev->dev_addr[3],
5803                    dev->dev_addr[4],
5804                    dev->dev_addr[5]);
5805
5806         dev_printk(KERN_INFO, &pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
5807                    dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
5808                    dev->features & (NETIF_F_HW_CSUM | NETIF_F_SG) ?
5809                         "csum " : "",
5810                    dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
5811                         "vlan " : "",
5812                    id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
5813                    id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
5814                    id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
5815                    np->gigabit == PHY_GIGABIT ? "gbit " : "",
5816                    np->need_linktimer ? "lnktim " : "",
5817                    np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
5818                    np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
5819                    np->desc_ver);
5820
5821         return 0;
5822
5823 out_error:
5824         if (phystate_orig)
5825                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5826         pci_set_drvdata(pci_dev, NULL);
5827 out_freering:
5828         free_rings(dev);
5829 out_unmap:
5830         iounmap(get_hwbase(dev));
5831 out_relreg:
5832         pci_release_regions(pci_dev);
5833 out_disable:
5834         pci_disable_device(pci_dev);
5835 out_free:
5836         free_netdev(dev);
5837 out:
5838         return err;
5839 }
5840
5841 static void nv_restore_phy(struct net_device *dev)
5842 {
5843         struct fe_priv *np = netdev_priv(dev);
5844         u16 phy_reserved, mii_control;
5845
5846         if (np->phy_oui == PHY_OUI_REALTEK &&
5847             np->phy_model == PHY_MODEL_REALTEK_8201 &&
5848             phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
5849                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
5850                 phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
5851                 phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
5852                 phy_reserved |= PHY_REALTEK_INIT8;
5853                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
5854                 mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
5855
5856                 /* restart auto negotiation */
5857                 mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
5858                 mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
5859                 mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
5860         }
5861 }
5862
5863 static void __devexit nv_remove(struct pci_dev *pci_dev)
5864 {
5865         struct net_device *dev = pci_get_drvdata(pci_dev);
5866         struct fe_priv *np = netdev_priv(dev);
5867         u8 __iomem *base = get_hwbase(dev);
5868
5869         unregister_netdev(dev);
5870
5871         /* special op: write back the misordered MAC address - otherwise
5872          * the next nv_probe would see a wrong address.
5873          */
5874         writel(np->orig_mac[0], base + NvRegMacAddrA);
5875         writel(np->orig_mac[1], base + NvRegMacAddrB);
5876         writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
5877                base + NvRegTransmitPoll);
5878
5879         /* restore any phy related changes */
5880         nv_restore_phy(dev);
5881
5882         /* free all structures */
5883         free_rings(dev);
5884         iounmap(get_hwbase(dev));
5885         pci_release_regions(pci_dev);
5886         pci_disable_device(pci_dev);
5887         free_netdev(dev);
5888         pci_set_drvdata(pci_dev, NULL);
5889 }
5890
5891 #ifdef CONFIG_PM
5892 static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
5893 {
5894         struct net_device *dev = pci_get_drvdata(pdev);
5895         struct fe_priv *np = netdev_priv(dev);
5896         u8 __iomem *base = get_hwbase(dev);
5897         int i;
5898
5899         if (netif_running(dev)) {
5900                 // Gross.
5901                 nv_close(dev);
5902         }
5903         netif_device_detach(dev);
5904
5905         /* save non-pci configuration space */
5906         for (i = 0;i <= np->register_size/sizeof(u32); i++)
5907                 np->saved_config_space[i] = readl(base + i*sizeof(u32));
5908
5909         pci_save_state(pdev);
5910         pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
5911         pci_disable_device(pdev);
5912         pci_set_power_state(pdev, pci_choose_state(pdev, state));
5913         return 0;
5914 }
5915
5916 static int nv_resume(struct pci_dev *pdev)
5917 {
5918         struct net_device *dev = pci_get_drvdata(pdev);
5919         struct fe_priv *np = netdev_priv(dev);
5920         u8 __iomem *base = get_hwbase(dev);
5921         int i, rc = 0;
5922
5923         pci_set_power_state(pdev, PCI_D0);
5924         pci_restore_state(pdev);
5925         /* ack any pending wake events, disable PME */
5926         pci_enable_wake(pdev, PCI_D0, 0);
5927
5928         /* restore non-pci configuration space */
5929         for (i = 0;i <= np->register_size/sizeof(u32); i++)
5930                 writel(np->saved_config_space[i], base+i*sizeof(u32));
5931
5932         netif_device_attach(dev);
5933         if (netif_running(dev)) {
5934                 rc = nv_open(dev);
5935                 nv_set_multicast(dev);
5936         }
5937         return rc;
5938 }
5939
5940 static void nv_shutdown(struct pci_dev *pdev)
5941 {
5942         struct net_device *dev = pci_get_drvdata(pdev);
5943         struct fe_priv *np = netdev_priv(dev);
5944
5945         if (netif_running(dev))
5946                 nv_close(dev);
5947
5948         pci_enable_wake(pdev, PCI_D3hot, np->wolenabled);
5949         pci_enable_wake(pdev, PCI_D3cold, np->wolenabled);
5950         pci_disable_device(pdev);
5951         pci_set_power_state(pdev, PCI_D3hot);
5952 }
5953 #else
5954 #define nv_suspend NULL
5955 #define nv_shutdown NULL
5956 #define nv_resume NULL
5957 #endif /* CONFIG_PM */
5958
5959 static struct pci_device_id pci_tbl[] = {
5960         {       /* nForce Ethernet Controller */
5961                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
5962                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5963         },
5964         {       /* nForce2 Ethernet Controller */
5965                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
5966                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5967         },
5968         {       /* nForce3 Ethernet Controller */
5969                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
5970                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5971         },
5972         {       /* nForce3 Ethernet Controller */
5973                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
5974                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5975         },
5976         {       /* nForce3 Ethernet Controller */
5977                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
5978                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5979         },
5980         {       /* nForce3 Ethernet Controller */
5981                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
5982                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5983         },
5984         {       /* nForce3 Ethernet Controller */
5985                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
5986                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5987         },
5988         {       /* CK804 Ethernet Controller */
5989                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
5990                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5991         },
5992         {       /* CK804 Ethernet Controller */
5993                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
5994                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5995         },
5996         {       /* MCP04 Ethernet Controller */
5997                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
5998                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
5999         },
6000         {       /* MCP04 Ethernet Controller */
6001                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
6002                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6003         },
6004         {       /* MCP51 Ethernet Controller */
6005                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
6006                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
6007         },
6008         {       /* MCP51 Ethernet Controller */
6009                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
6010                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1,
6011         },
6012         {       /* MCP55 Ethernet Controller */
6013                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
6014                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT,
6015         },
6016         {       /* MCP55 Ethernet Controller */
6017                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
6018                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT,
6019         },
6020         {       /* MCP61 Ethernet Controller */
6021                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_16),
6022                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
6023         },
6024         {       /* MCP61 Ethernet Controller */
6025                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_17),
6026                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
6027         },
6028         {       /* MCP61 Ethernet Controller */
6029                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_18),
6030                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
6031         },
6032         {       /* MCP61 Ethernet Controller */
6033                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_19),
6034                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR,
6035         },
6036         {       /* MCP65 Ethernet Controller */
6037                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_20),
6038                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6039         },
6040         {       /* MCP65 Ethernet Controller */
6041                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_21),
6042                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6043         },
6044         {       /* MCP65 Ethernet Controller */
6045                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_22),
6046                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6047         },
6048         {       /* MCP65 Ethernet Controller */
6049                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_23),
6050                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6051         },
6052         {       /* MCP67 Ethernet Controller */
6053                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_24),
6054                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
6055         },
6056         {       /* MCP67 Ethernet Controller */
6057                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_25),
6058                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
6059         },
6060         {       /* MCP67 Ethernet Controller */
6061                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_26),
6062                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
6063         },
6064         {       /* MCP67 Ethernet Controller */
6065                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_27),
6066                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE,
6067         },
6068         {       /* MCP73 Ethernet Controller */
6069                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_28),
6070                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
6071         },
6072         {       /* MCP73 Ethernet Controller */
6073                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_29),
6074                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
6075         },
6076         {       /* MCP73 Ethernet Controller */
6077                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_30),
6078                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
6079         },
6080         {       /* MCP73 Ethernet Controller */
6081                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_31),
6082                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE,
6083         },
6084         {       /* MCP77 Ethernet Controller */
6085                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_32),
6086                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6087         },
6088         {       /* MCP77 Ethernet Controller */
6089                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_33),
6090                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6091         },
6092         {       /* MCP77 Ethernet Controller */
6093                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_34),
6094                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6095         },
6096         {       /* MCP77 Ethernet Controller */
6097                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_35),
6098                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6099         },
6100         {       /* MCP79 Ethernet Controller */
6101                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_36),
6102                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6103         },
6104         {       /* MCP79 Ethernet Controller */
6105                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_37),
6106                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6107         },
6108         {       /* MCP79 Ethernet Controller */
6109                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_38),
6110                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6111         },
6112         {       /* MCP79 Ethernet Controller */
6113                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_39),
6114                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V2|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE,
6115         },
6116         {0,},
6117 };
6118
6119 static struct pci_driver driver = {
6120         .name           = DRV_NAME,
6121         .id_table       = pci_tbl,
6122         .probe          = nv_probe,
6123         .remove         = __devexit_p(nv_remove),
6124         .suspend        = nv_suspend,
6125         .resume         = nv_resume,
6126         .shutdown       = nv_shutdown,
6127 };
6128
6129 static int __init init_nic(void)
6130 {
6131         return pci_register_driver(&driver);
6132 }
6133
6134 static void __exit exit_nic(void)
6135 {
6136         pci_unregister_driver(&driver);
6137 }
6138
6139 module_param(max_interrupt_work, int, 0);
6140 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6141 module_param(optimization_mode, int, 0);
6142 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.");
6143 module_param(poll_interval, int, 0);
6144 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.");
6145 module_param(msi, int, 0);
6146 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6147 module_param(msix, int, 0);
6148 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6149 module_param(dma_64bit, int, 0);
6150 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6151 module_param(phy_cross, int, 0);
6152 MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6153
6154 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6155 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6156 MODULE_LICENSE("GPL");
6157
6158 MODULE_DEVICE_TABLE(pci, pci_tbl);
6159
6160 module_init(init_nic);
6161 module_exit(exit_nic);