git.oblomov.eu Git - linux-2.6/blob - drivers/net/forcedeth.c

   1 /*
   2  * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
   3  *
   4  * Note: This driver is a cleanroom reimplementation based on reverse
   5  *      engineered documentation written by Carl-Daniel Hailfinger
   6  *      and Andrew de Quincey.
   7  *
   8  * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
   9  * trademarks of NVIDIA Corporation in the United States and other
  10  * countries.
  11  *
  12  * Copyright (C) 2003,4,5 Manfred Spraul
  13  * Copyright (C) 2004 Andrew de Quincey (wol support)
  14  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  15  *              IRQ rate fixes, bigendian fixes, cleanups, verification)
  16  * Copyright (c) 2004,5,6 NVIDIA Corporation
  17  *
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License as published by
  20  * the Free Software Foundation; either version 2 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  31  *
  32  * Changelog:
  33  *      0.01: 05 Oct 2003: First release that compiles without warnings.
  34  *      0.02: 05 Oct 2003: Fix bug for nv_drain_tx: do not try to free NULL skbs.
  35  *                         Check all PCI BARs for the register window.
  36  *                         udelay added to mii_rw.
  37  *      0.03: 06 Oct 2003: Initialize dev->irq.
  38  *      0.04: 07 Oct 2003: Initialize np->lock, reduce handled irqs, add printks.
  39  *      0.05: 09 Oct 2003: printk removed again, irq status print tx_timeout.
  40  *      0.06: 10 Oct 2003: MAC Address read updated, pff flag generation updated,
  41  *                         irq mask updated
  42  *      0.07: 14 Oct 2003: Further irq mask updates.
  43  *      0.08: 20 Oct 2003: rx_desc.Length initialization added, nv_alloc_rx refill
  44  *                         added into irq handler, NULL check for drain_ring.
  45  *      0.09: 20 Oct 2003: Basic link speed irq implementation. Only handle the
  46  *                         requested interrupt sources.
  47  *      0.10: 20 Oct 2003: First cleanup for release.
  48  *      0.11: 21 Oct 2003: hexdump for tx added, rx buffer sizes increased.
  49  *                         MAC Address init fix, set_multicast cleanup.
  50  *      0.12: 23 Oct 2003: Cleanups for release.
  51  *      0.13: 25 Oct 2003: Limit for concurrent tx packets increased to 10.
  52  *                         Set link speed correctly. start rx before starting
  53  *                         tx (nv_start_rx sets the link speed).
  54  *      0.14: 25 Oct 2003: Nic dependant irq mask.
  55  *      0.15: 08 Nov 2003: fix smp deadlock with set_multicast_list during
  56  *                         open.
  57  *      0.16: 15 Nov 2003: include file cleanup for ppc64, rx buffer size
  58  *                         increased to 1628 bytes.
  59  *      0.17: 16 Nov 2003: undo rx buffer size increase. Substract 1 from
  60  *                         the tx length.
  61  *      0.18: 17 Nov 2003: fix oops due to late initialization of dev_stats
  62  *      0.19: 29 Nov 2003: Handle RxNoBuf, detect & handle invalid mac
  63  *                         addresses, really stop rx if already running
  64  *                         in nv_start_rx, clean up a bit.
  65  *      0.20: 07 Dec 2003: alloc fixes
  66  *      0.21: 12 Jan 2004: additional alloc fix, nic polling fix.
  67  *      0.22: 19 Jan 2004: reprogram timer to a sane rate, avoid lockup
  68  *                         on close.
  69  *      0.23: 26 Jan 2004: various small cleanups
  70  *      0.24: 27 Feb 2004: make driver even less anonymous in backtraces
  71  *      0.25: 09 Mar 2004: wol support
  72  *      0.26: 03 Jun 2004: netdriver specific annotation, sparse-related fixes
  73  *      0.27: 19 Jun 2004: Gigabit support, new descriptor rings,
  74  *                         added CK804/MCP04 device IDs, code fixes
  75  *                         for registers, link status and other minor fixes.
  76  *      0.28: 21 Jun 2004: Big cleanup, making driver mostly endian safe
  77  *      0.29: 31 Aug 2004: Add backup timer for link change notification.
  78  *      0.30: 25 Sep 2004: rx checksum support for nf 250 Gb. Add rx reset
  79  *                         into nv_close, otherwise reenabling for wol can
  80  *                         cause DMA to kfree'd memory.
  81  *      0.31: 14 Nov 2004: ethtool support for getting/setting link
  82  *                         capabilities.
  83  *      0.32: 16 Apr 2005: RX_ERROR4 handling added.
  84  *      0.33: 16 May 2005: Support for MCP51 added.
  85  *      0.34: 18 Jun 2005: Add DEV_NEED_LINKTIMER to all nForce nics.
  86  *      0.35: 26 Jun 2005: Support for MCP55 added.
  87  *      0.36: 28 Jun 2005: Add jumbo frame support.
  88  *      0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
  89  *      0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
  90  *                         per-packet flags.
  91  *      0.39: 18 Jul 2005: Add 64bit descriptor support.
  92  *      0.40: 19 Jul 2005: Add support for mac address change.
  93  *      0.41: 30 Jul 2005: Write back original MAC in nv_close instead
  94  *                         of nv_remove
  95  *      0.42: 06 Aug 2005: Fix lack of link speed initialization
  96  *                         in the second (and later) nv_open call
  97  *      0.43: 10 Aug 2005: Add support for tx checksum.
  98  *      0.44: 20 Aug 2005: Add support for scatter gather and segmentation.
  99  *      0.45: 18 Sep 2005: Remove nv_stop/start_rx from every link check
 100  *      0.46: 20 Oct 2005: Add irq optimization modes.
 101  *      0.47: 26 Oct 2005: Add phyaddr 0 in phy scan.
 102  *      0.48: 24 Dec 2005: Disable TSO, bugfix for pci_map_single
 103  *      0.49: 10 Dec 2005: Fix tso for large buffers.
 104  *      0.50: 20 Jan 2006: Add 8021pq tagging support.
 105  *      0.51: 20 Jan 2006: Add 64bit consistent memory allocation for rings.
 106  *      0.52: 20 Jan 2006: Add MSI/MSIX support.
 107  *      0.53: 19 Mar 2006: Fix init from low power mode and add hw reset.
 108  *      0.54: 21 Mar 2006: Fix spin locks for multi irqs and cleanup.
 109  *      0.55: 22 Mar 2006: Add flow control (pause frame).
 110  *      0.56: 22 Mar 2006: Additional ethtool config and moduleparam support.
 111  *      0.57: 14 May 2006: Mac address set in probe/remove and order corrections.
 112  *      0.58: 30 Oct 2006: Added support for sideband management unit.
 113  *      0.59: 30 Oct 2006: Added support for recoverable error.
 114  *
 115  * Known bugs:
 116  * We suspect that on some hardware no TX done interrupts are generated.
 117  * This means recovery from netif_stop_queue only happens if the hw timer
 118  * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
 119  * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
 120  * If your hardware reliably generates tx done interrupts, then you can remove
 121  * DEV_NEED_TIMERIRQ from the driver_data flags.
 122  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
 123  * superfluous timer interrupts from the nic.
 124  */
 125 #ifdef CONFIG_FORCEDETH_NAPI
 126 #define DRIVERNAPI "-NAPI"
 127 #else
 128 #define DRIVERNAPI
 129 #endif
 130 #define FORCEDETH_VERSION               "0.59"
 131 #define DRV_NAME                        "forcedeth"
 132
 133 #include <linux/module.h>
 134 #include <linux/types.h>
 135 #include <linux/pci.h>
 136 #include <linux/interrupt.h>
 137 #include <linux/netdevice.h>
 138 #include <linux/etherdevice.h>
 139 #include <linux/delay.h>
 140 #include <linux/spinlock.h>
 141 #include <linux/ethtool.h>
 142 #include <linux/timer.h>
 143 #include <linux/skbuff.h>
 144 #include <linux/mii.h>
 145 #include <linux/random.h>
 146 #include <linux/init.h>
 147 #include <linux/if_vlan.h>
 148 #include <linux/dma-mapping.h>
 149
 150 #include <asm/irq.h>
 151 #include <asm/io.h>
 152 #include <asm/uaccess.h>
 153 #include <asm/system.h>
 154
 155 #if 0
 156 #define dprintk                 printk
 157 #else
 158 #define dprintk(x...)           do { } while (0)
 159 #endif
 160
 161
 162 /*
 163  * Hardware access:
 164  */
 165
 166 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 167 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 168 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
 169 #define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 170 #define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 171 #define DEV_HAS_VLAN            0x0020  /* device supports vlan tagging and striping */
 172 #define DEV_HAS_MSI             0x0040  /* device supports MSI */
 173 #define DEV_HAS_MSI_X           0x0080  /* device supports MSI-X */
 174 #define DEV_HAS_POWER_CNTRL     0x0100  /* device supports power savings */
 175 #define DEV_HAS_PAUSEFRAME_TX   0x0200  /* device supports tx pause frames */
 176 #define DEV_HAS_STATISTICS      0x0400  /* device supports hw statistics */
 177 #define DEV_HAS_TEST_EXTENDED   0x0800  /* device supports extended diagnostic test */
 178 #define DEV_HAS_MGMT_UNIT       0x1000  /* device supports management unit */
 179
 180 enum {
 181         NvRegIrqStatus = 0x000,
 182 #define NVREG_IRQSTAT_MIIEVENT  0x040
 183 #define NVREG_IRQSTAT_MASK              0x81ff
 184         NvRegIrqMask = 0x004,
 185 #define NVREG_IRQ_RX_ERROR              0x0001
 186 #define NVREG_IRQ_RX                    0x0002
 187 #define NVREG_IRQ_RX_NOBUF              0x0004
 188 #define NVREG_IRQ_TX_ERR                0x0008
 189 #define NVREG_IRQ_TX_OK                 0x0010
 190 #define NVREG_IRQ_TIMER                 0x0020
 191 #define NVREG_IRQ_LINK                  0x0040
 192 #define NVREG_IRQ_RX_FORCED             0x0080
 193 #define NVREG_IRQ_TX_FORCED             0x0100
 194 #define NVREG_IRQ_RECOVER_ERROR         0x8000
 195 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 196 #define NVREG_IRQMASK_CPU               0x0040
 197 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 198 #define NVREG_IRQ_RX_ALL                (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 199 #define NVREG_IRQ_OTHER                 (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 200
 201 #define NVREG_IRQ_UNKNOWN       (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
 202                                         NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
 203                                         NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR))
 204
 205         NvRegUnknownSetupReg6 = 0x008,
 206 #define NVREG_UNKSETUP6_VAL             3
 207
 208 /*
 209  * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 210  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 211  */
 212         NvRegPollingInterval = 0x00c,
 213 #define NVREG_POLL_DEFAULT_THROUGHPUT   970
 214 #define NVREG_POLL_DEFAULT_CPU  13
 215         NvRegMSIMap0 = 0x020,
 216         NvRegMSIMap1 = 0x024,
 217         NvRegMSIIrqMask = 0x030,
 218 #define NVREG_MSI_VECTOR_0_ENABLED 0x01
 219         NvRegMisc1 = 0x080,
 220 #define NVREG_MISC1_PAUSE_TX    0x01
 221 #define NVREG_MISC1_HD          0x02
 222 #define NVREG_MISC1_FORCE       0x3b0f3c
 223
 224         NvRegMacReset = 0x3c,
 225 #define NVREG_MAC_RESET_ASSERT  0x0F3
 226         NvRegTransmitterControl = 0x084,
 227 #define NVREG_XMITCTL_START     0x01
 228 #define NVREG_XMITCTL_MGMT_ST   0x40000000
 229 #define NVREG_XMITCTL_SYNC_MASK         0x000f0000
 230 #define NVREG_XMITCTL_SYNC_NOT_READY    0x0
 231 #define NVREG_XMITCTL_SYNC_PHY_INIT     0x00040000
 232 #define NVREG_XMITCTL_MGMT_SEMA_MASK    0x00000f00
 233 #define NVREG_XMITCTL_MGMT_SEMA_FREE    0x0
 234 #define NVREG_XMITCTL_HOST_SEMA_MASK    0x0000f000
 235 #define NVREG_XMITCTL_HOST_SEMA_ACQ     0x0000f000
 236 #define NVREG_XMITCTL_HOST_LOADED       0x00004000
 237 #define NVREG_XMITCTL_TX_PATH_EN        0x01000000
 238         NvRegTransmitterStatus = 0x088,
 239 #define NVREG_XMITSTAT_BUSY     0x01
 240
 241         NvRegPacketFilterFlags = 0x8c,
 242 #define NVREG_PFF_PAUSE_RX      0x08
 243 #define NVREG_PFF_ALWAYS        0x7F0000
 244 #define NVREG_PFF_PROMISC       0x80
 245 #define NVREG_PFF_MYADDR        0x20
 246 #define NVREG_PFF_LOOPBACK      0x10
 247
 248         NvRegOffloadConfig = 0x90,
 249 #define NVREG_OFFLOAD_HOMEPHY   0x601
 250 #define NVREG_OFFLOAD_NORMAL    RX_NIC_BUFSIZE
 251         NvRegReceiverControl = 0x094,
 252 #define NVREG_RCVCTL_START      0x01
 253 #define NVREG_RCVCTL_RX_PATH_EN 0x01000000
 254         NvRegReceiverStatus = 0x98,
 255 #define NVREG_RCVSTAT_BUSY      0x01
 256
 257         NvRegRandomSeed = 0x9c,
 258 #define NVREG_RNDSEED_MASK      0x00ff
 259 #define NVREG_RNDSEED_FORCE     0x7f00
 260 #define NVREG_RNDSEED_FORCE2    0x2d00
 261 #define NVREG_RNDSEED_FORCE3    0x7400
 262
 263         NvRegTxDeferral = 0xA0,
 264 #define NVREG_TX_DEFERRAL_DEFAULT       0x15050f
 265 #define NVREG_TX_DEFERRAL_RGMII_10_100  0x16070f
 266 #define NVREG_TX_DEFERRAL_RGMII_1000    0x14050f
 267         NvRegRxDeferral = 0xA4,
 268 #define NVREG_RX_DEFERRAL_DEFAULT       0x16
 269         NvRegMacAddrA = 0xA8,
 270         NvRegMacAddrB = 0xAC,
 271         NvRegMulticastAddrA = 0xB0,
 272 #define NVREG_MCASTADDRA_FORCE  0x01
 273         NvRegMulticastAddrB = 0xB4,
 274         NvRegMulticastMaskA = 0xB8,
 275         NvRegMulticastMaskB = 0xBC,
 276
 277         NvRegPhyInterface = 0xC0,
 278 #define PHY_RGMII               0x10000000
 279
 280         NvRegTxRingPhysAddr = 0x100,
 281         NvRegRxRingPhysAddr = 0x104,
 282         NvRegRingSizes = 0x108,
 283 #define NVREG_RINGSZ_TXSHIFT 0
 284 #define NVREG_RINGSZ_RXSHIFT 16
 285         NvRegTransmitPoll = 0x10c,
 286 #define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
 287         NvRegLinkSpeed = 0x110,
 288 #define NVREG_LINKSPEED_FORCE 0x10000
 289 #define NVREG_LINKSPEED_10      1000
 290 #define NVREG_LINKSPEED_100     100
 291 #define NVREG_LINKSPEED_1000    50
 292 #define NVREG_LINKSPEED_MASK    (0xFFF)
 293         NvRegUnknownSetupReg5 = 0x130,
 294 #define NVREG_UNKSETUP5_BIT31   (1<<31)
 295         NvRegTxWatermark = 0x13c,
 296 #define NVREG_TX_WM_DESC1_DEFAULT       0x0200010
 297 #define NVREG_TX_WM_DESC2_3_DEFAULT     0x1e08000
 298 #define NVREG_TX_WM_DESC2_3_1000        0xfe08000
 299         NvRegTxRxControl = 0x144,
 300 #define NVREG_TXRXCTL_KICK      0x0001
 301 #define NVREG_TXRXCTL_BIT1      0x0002
 302 #define NVREG_TXRXCTL_BIT2      0x0004
 303 #define NVREG_TXRXCTL_IDLE      0x0008
 304 #define NVREG_TXRXCTL_RESET     0x0010
 305 #define NVREG_TXRXCTL_RXCHECK   0x0400
 306 #define NVREG_TXRXCTL_DESC_1    0
 307 #define NVREG_TXRXCTL_DESC_2    0x002100
 308 #define NVREG_TXRXCTL_DESC_3    0xc02200
 309 #define NVREG_TXRXCTL_VLANSTRIP 0x00040
 310 #define NVREG_TXRXCTL_VLANINS   0x00080
 311         NvRegTxRingPhysAddrHigh = 0x148,
 312         NvRegRxRingPhysAddrHigh = 0x14C,
 313         NvRegTxPauseFrame = 0x170,
 314 #define NVREG_TX_PAUSEFRAME_DISABLE     0x1ff0080
 315 #define NVREG_TX_PAUSEFRAME_ENABLE      0x0c00030
 316         NvRegMIIStatus = 0x180,
 317 #define NVREG_MIISTAT_ERROR             0x0001
 318 #define NVREG_MIISTAT_LINKCHANGE        0x0008
 319 #define NVREG_MIISTAT_MASK              0x000f
 320 #define NVREG_MIISTAT_MASK2             0x000f
 321         NvRegMIIMask = 0x184,
 322 #define NVREG_MII_LINKCHANGE            0x0008
 323
 324         NvRegAdapterControl = 0x188,
 325 #define NVREG_ADAPTCTL_START    0x02
 326 #define NVREG_ADAPTCTL_LINKUP   0x04
 327 #define NVREG_ADAPTCTL_PHYVALID 0x40000
 328 #define NVREG_ADAPTCTL_RUNNING  0x100000
 329 #define NVREG_ADAPTCTL_PHYSHIFT 24
 330         NvRegMIISpeed = 0x18c,
 331 #define NVREG_MIISPEED_BIT8     (1<<8)
 332 #define NVREG_MIIDELAY  5
 333         NvRegMIIControl = 0x190,
 334 #define NVREG_MIICTL_INUSE      0x08000
 335 #define NVREG_MIICTL_WRITE      0x00400
 336 #define NVREG_MIICTL_ADDRSHIFT  5
 337         NvRegMIIData = 0x194,
 338         NvRegWakeUpFlags = 0x200,
 339 #define NVREG_WAKEUPFLAGS_VAL           0x7770
 340 #define NVREG_WAKEUPFLAGS_BUSYSHIFT     24
 341 #define NVREG_WAKEUPFLAGS_ENABLESHIFT   16
 342 #define NVREG_WAKEUPFLAGS_D3SHIFT       12
 343 #define NVREG_WAKEUPFLAGS_D2SHIFT       8
 344 #define NVREG_WAKEUPFLAGS_D1SHIFT       4
 345 #define NVREG_WAKEUPFLAGS_D0SHIFT       0
 346 #define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT         0x01
 347 #define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT      0x02
 348 #define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE     0x04
 349 #define NVREG_WAKEUPFLAGS_ENABLE        0x1111
 350
 351         NvRegPatternCRC = 0x204,
 352         NvRegPatternMask = 0x208,
 353         NvRegPowerCap = 0x268,
 354 #define NVREG_POWERCAP_D3SUPP   (1<<30)
 355 #define NVREG_POWERCAP_D2SUPP   (1<<26)
 356 #define NVREG_POWERCAP_D1SUPP   (1<<25)
 357         NvRegPowerState = 0x26c,
 358 #define NVREG_POWERSTATE_POWEREDUP      0x8000
 359 #define NVREG_POWERSTATE_VALID          0x0100
 360 #define NVREG_POWERSTATE_MASK           0x0003
 361 #define NVREG_POWERSTATE_D0             0x0000
 362 #define NVREG_POWERSTATE_D1             0x0001
 363 #define NVREG_POWERSTATE_D2             0x0002
 364 #define NVREG_POWERSTATE_D3             0x0003
 365         NvRegTxCnt = 0x280,
 366         NvRegTxZeroReXmt = 0x284,
 367         NvRegTxOneReXmt = 0x288,
 368         NvRegTxManyReXmt = 0x28c,
 369         NvRegTxLateCol = 0x290,
 370         NvRegTxUnderflow = 0x294,
 371         NvRegTxLossCarrier = 0x298,
 372         NvRegTxExcessDef = 0x29c,
 373         NvRegTxRetryErr = 0x2a0,
 374         NvRegRxFrameErr = 0x2a4,
 375         NvRegRxExtraByte = 0x2a8,
 376         NvRegRxLateCol = 0x2ac,
 377         NvRegRxRunt = 0x2b0,
 378         NvRegRxFrameTooLong = 0x2b4,
 379         NvRegRxOverflow = 0x2b8,
 380         NvRegRxFCSErr = 0x2bc,
 381         NvRegRxFrameAlignErr = 0x2c0,
 382         NvRegRxLenErr = 0x2c4,
 383         NvRegRxUnicast = 0x2c8,
 384         NvRegRxMulticast = 0x2cc,
 385         NvRegRxBroadcast = 0x2d0,
 386         NvRegTxDef = 0x2d4,
 387         NvRegTxFrame = 0x2d8,
 388         NvRegRxCnt = 0x2dc,
 389         NvRegTxPause = 0x2e0,
 390         NvRegRxPause = 0x2e4,
 391         NvRegRxDropFrame = 0x2e8,
 392         NvRegVlanControl = 0x300,
 393 #define NVREG_VLANCONTROL_ENABLE        0x2000
 394         NvRegMSIXMap0 = 0x3e0,
 395         NvRegMSIXMap1 = 0x3e4,
 396         NvRegMSIXIrqStatus = 0x3f0,
 397
 398         NvRegPowerState2 = 0x600,
 399 #define NVREG_POWERSTATE2_POWERUP_MASK          0x0F11
 400 #define NVREG_POWERSTATE2_POWERUP_REV_A3        0x0001
 401 };
 402
 403 /* Big endian: should work, but is untested */
 404 struct ring_desc {
 405         __le32 buf;
 406         __le32 flaglen;
 407 };
 408
 409 struct ring_desc_ex {
 410         __le32 bufhigh;
 411         __le32 buflow;
 412         __le32 txvlan;
 413         __le32 flaglen;
 414 };
 415
 416 union ring_type {
 417         struct ring_desc* orig;
 418         struct ring_desc_ex* ex;
 419 };
 420
 421 #define FLAG_MASK_V1 0xffff0000
 422 #define FLAG_MASK_V2 0xffffc000
 423 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 424 #define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 425
 426 #define NV_TX_LASTPACKET        (1<<16)
 427 #define NV_TX_RETRYERROR        (1<<19)
 428 #define NV_TX_FORCED_INTERRUPT  (1<<24)
 429 #define NV_TX_DEFERRED          (1<<26)
 430 #define NV_TX_CARRIERLOST       (1<<27)
 431 #define NV_TX_LATECOLLISION     (1<<28)
 432 #define NV_TX_UNDERFLOW         (1<<29)
 433 #define NV_TX_ERROR             (1<<30)
 434 #define NV_TX_VALID             (1<<31)
 435
 436 #define NV_TX2_LASTPACKET       (1<<29)
 437 #define NV_TX2_RETRYERROR       (1<<18)
 438 #define NV_TX2_FORCED_INTERRUPT (1<<30)
 439 #define NV_TX2_DEFERRED         (1<<25)
 440 #define NV_TX2_CARRIERLOST      (1<<26)
 441 #define NV_TX2_LATECOLLISION    (1<<27)
 442 #define NV_TX2_UNDERFLOW        (1<<28)
 443 /* error and valid are the same for both */
 444 #define NV_TX2_ERROR            (1<<30)
 445 #define NV_TX2_VALID            (1<<31)
 446 #define NV_TX2_TSO              (1<<28)
 447 #define NV_TX2_TSO_SHIFT        14
 448 #define NV_TX2_TSO_MAX_SHIFT    14
 449 #define NV_TX2_TSO_MAX_SIZE     (1<<NV_TX2_TSO_MAX_SHIFT)
 450 #define NV_TX2_CHECKSUM_L3      (1<<27)
 451 #define NV_TX2_CHECKSUM_L4      (1<<26)
 452
 453 #define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 454
 455 #define NV_RX_DESCRIPTORVALID   (1<<16)
 456 #define NV_RX_MISSEDFRAME       (1<<17)
 457 #define NV_RX_SUBSTRACT1        (1<<18)
 458 #define NV_RX_ERROR1            (1<<23)
 459 #define NV_RX_ERROR2            (1<<24)
 460 #define NV_RX_ERROR3            (1<<25)
 461 #define NV_RX_ERROR4            (1<<26)
 462 #define NV_RX_CRCERR            (1<<27)
 463 #define NV_RX_OVERFLOW          (1<<28)
 464 #define NV_RX_FRAMINGERR        (1<<29)
 465 #define NV_RX_ERROR             (1<<30)
 466 #define NV_RX_AVAIL             (1<<31)
 467
 468 #define NV_RX2_CHECKSUMMASK     (0x1C000000)
 469 #define NV_RX2_CHECKSUMOK1      (0x10000000)
 470 #define NV_RX2_CHECKSUMOK2      (0x14000000)
 471 #define NV_RX2_CHECKSUMOK3      (0x18000000)
 472 #define NV_RX2_DESCRIPTORVALID  (1<<29)
 473 #define NV_RX2_SUBSTRACT1       (1<<25)
 474 #define NV_RX2_ERROR1           (1<<18)
 475 #define NV_RX2_ERROR2           (1<<19)
 476 #define NV_RX2_ERROR3           (1<<20)
 477 #define NV_RX2_ERROR4           (1<<21)
 478 #define NV_RX2_CRCERR           (1<<22)
 479 #define NV_RX2_OVERFLOW         (1<<23)
 480 #define NV_RX2_FRAMINGERR       (1<<24)
 481 /* error and avail are the same for both */
 482 #define NV_RX2_ERROR            (1<<30)
 483 #define NV_RX2_AVAIL            (1<<31)
 484
 485 #define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 486 #define NV_RX3_VLAN_TAG_MASK    (0x0000FFFF)
 487
 488 /* Miscelaneous hardware related defines: */
 489 #define NV_PCI_REGSZ_VER1       0x270
 490 #define NV_PCI_REGSZ_VER2       0x604
 491
 492 /* various timeout delays: all in usec */
 493 #define NV_TXRX_RESET_DELAY     4
 494 #define NV_TXSTOP_DELAY1        10
 495 #define NV_TXSTOP_DELAY1MAX     500000
 496 #define NV_TXSTOP_DELAY2        100
 497 #define NV_RXSTOP_DELAY1        10
 498 #define NV_RXSTOP_DELAY1MAX     500000
 499 #define NV_RXSTOP_DELAY2        100
 500 #define NV_SETUP5_DELAY         5
 501 #define NV_SETUP5_DELAYMAX      50000
 502 #define NV_POWERUP_DELAY        5
 503 #define NV_POWERUP_DELAYMAX     5000
 504 #define NV_MIIBUSY_DELAY        50
 505 #define NV_MIIPHY_DELAY 10
 506 #define NV_MIIPHY_DELAYMAX      10000
 507 #define NV_MAC_RESET_DELAY      64
 508
 509 #define NV_WAKEUPPATTERNS       5
 510 #define NV_WAKEUPMASKENTRIES    4
 511
 512 /* General driver defaults */
 513 #define NV_WATCHDOG_TIMEO       (5*HZ)
 514
 515 #define RX_RING_DEFAULT         128
 516 #define TX_RING_DEFAULT         256
 517 #define RX_RING_MIN             128
 518 #define TX_RING_MIN             64
 519 #define RING_MAX_DESC_VER_1     1024
 520 #define RING_MAX_DESC_VER_2_3   16384
 521
 522 /* rx/tx mac addr + type + vlan + align + slack*/
 523 #define NV_RX_HEADERS           (64)
 524 /* even more slack. */
 525 #define NV_RX_ALLOC_PAD         (64)
 526
 527 /* maximum mtu size */
 528 #define NV_PKTLIMIT_1   ETH_DATA_LEN    /* hard limit not known */
 529 #define NV_PKTLIMIT_2   9100    /* Actual limit according to NVidia: 9202 */
 530
 531 #define OOM_REFILL      (1+HZ/20)
 532 #define POLL_WAIT       (1+HZ/100)
 533 #define LINK_TIMEOUT    (3*HZ)
 534 #define STATS_INTERVAL  (10*HZ)
 535
 536 /*
 537  * desc_ver values:
 538  * The nic supports three different descriptor types:
 539  * - DESC_VER_1: Original
 540  * - DESC_VER_2: support for jumbo frames.
 541  * - DESC_VER_3: 64-bit format.
 542  */
 543 #define DESC_VER_1      1
 544 #define DESC_VER_2      2
 545 #define DESC_VER_3      3
 546
 547 /* PHY defines */
 548 #define PHY_OUI_MARVELL 0x5043
 549 #define PHY_OUI_CICADA  0x03f1
 550 #define PHYID1_OUI_MASK 0x03ff
 551 #define PHYID1_OUI_SHFT 6
 552 #define PHYID2_OUI_MASK 0xfc00
 553 #define PHYID2_OUI_SHFT 10
 554 #define PHYID2_MODEL_MASK               0x03f0
 555 #define PHY_MODEL_MARVELL_E3016         0x220
 556 #define PHY_MARVELL_E3016_INITMASK      0x0300
 557 #define PHY_INIT1       0x0f000
 558 #define PHY_INIT2       0x0e00
 559 #define PHY_INIT3       0x01000
 560 #define PHY_INIT4       0x0200
 561 #define PHY_INIT5       0x0004
 562 #define PHY_INIT6       0x02000
 563 #define PHY_GIGABIT     0x0100
 564
 565 #define PHY_TIMEOUT     0x1
 566 #define PHY_ERROR       0x2
 567
 568 #define PHY_100 0x1
 569 #define PHY_1000        0x2
 570 #define PHY_HALF        0x100
 571
 572 #define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 573 #define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 574 #define NV_PAUSEFRAME_RX_ENABLE  0x0004
 575 #define NV_PAUSEFRAME_TX_ENABLE  0x0008
 576 #define NV_PAUSEFRAME_RX_REQ     0x0010
 577 #define NV_PAUSEFRAME_TX_REQ     0x0020
 578 #define NV_PAUSEFRAME_AUTONEG    0x0040
 579
 580 /* MSI/MSI-X defines */
 581 #define NV_MSI_X_MAX_VECTORS  8
 582 #define NV_MSI_X_VECTORS_MASK 0x000f
 583 #define NV_MSI_CAPABLE        0x0010
 584 #define NV_MSI_X_CAPABLE      0x0020
 585 #define NV_MSI_ENABLED        0x0040
 586 #define NV_MSI_X_ENABLED      0x0080
 587
 588 #define NV_MSI_X_VECTOR_ALL   0x0
 589 #define NV_MSI_X_VECTOR_RX    0x0
 590 #define NV_MSI_X_VECTOR_TX    0x1
 591 #define NV_MSI_X_VECTOR_OTHER 0x2
 592
 593 /* statistics */
 594 struct nv_ethtool_str {
 595         char name[ETH_GSTRING_LEN];
 596 };
 597
 598 static const struct nv_ethtool_str nv_estats_str[] = {
 599         { "tx_bytes" },
 600         { "tx_zero_rexmt" },
 601         { "tx_one_rexmt" },
 602         { "tx_many_rexmt" },
 603         { "tx_late_collision" },
 604         { "tx_fifo_errors" },
 605         { "tx_carrier_errors" },
 606         { "tx_excess_deferral" },
 607         { "tx_retry_error" },
 608         { "tx_deferral" },
 609         { "tx_packets" },
 610         { "tx_pause" },
 611         { "rx_frame_error" },
 612         { "rx_extra_byte" },
 613         { "rx_late_collision" },
 614         { "rx_runt" },
 615         { "rx_frame_too_long" },
 616         { "rx_over_errors" },
 617         { "rx_crc_errors" },
 618         { "rx_frame_align_error" },
 619         { "rx_length_error" },
 620         { "rx_unicast" },
 621         { "rx_multicast" },
 622         { "rx_broadcast" },
 623         { "rx_bytes" },
 624         { "rx_pause" },
 625         { "rx_drop_frame" },
 626         { "rx_packets" },
 627         { "rx_errors_total" }
 628 };
 629
 630 struct nv_ethtool_stats {
 631         u64 tx_bytes;
 632         u64 tx_zero_rexmt;
 633         u64 tx_one_rexmt;
 634         u64 tx_many_rexmt;
 635         u64 tx_late_collision;
 636         u64 tx_fifo_errors;
 637         u64 tx_carrier_errors;
 638         u64 tx_excess_deferral;
 639         u64 tx_retry_error;
 640         u64 tx_deferral;
 641         u64 tx_packets;
 642         u64 tx_pause;
 643         u64 rx_frame_error;
 644         u64 rx_extra_byte;
 645         u64 rx_late_collision;
 646         u64 rx_runt;
 647         u64 rx_frame_too_long;
 648         u64 rx_over_errors;
 649         u64 rx_crc_errors;
 650         u64 rx_frame_align_error;
 651         u64 rx_length_error;
 652         u64 rx_unicast;
 653         u64 rx_multicast;
 654         u64 rx_broadcast;
 655         u64 rx_bytes;
 656         u64 rx_pause;
 657         u64 rx_drop_frame;
 658         u64 rx_packets;
 659         u64 rx_errors_total;
 660 };
 661
 662 /* diagnostics */
 663 #define NV_TEST_COUNT_BASE 3
 664 #define NV_TEST_COUNT_EXTENDED 4
 665
 666 static const struct nv_ethtool_str nv_etests_str[] = {
 667         { "link      (online/offline)" },
 668         { "register  (offline)       " },
 669         { "interrupt (offline)       " },
 670         { "loopback  (offline)       " }
 671 };
 672
 673 struct register_test {
 674         __le32 reg;
 675         __le32 mask;
 676 };
 677
 678 static const struct register_test nv_registers_test[] = {
 679         { NvRegUnknownSetupReg6, 0x01 },
 680         { NvRegMisc1, 0x03c },
 681         { NvRegOffloadConfig, 0x03ff },
 682         { NvRegMulticastAddrA, 0xffffffff },
 683         { NvRegTxWatermark, 0x0ff },
 684         { NvRegWakeUpFlags, 0x07777 },
 685         { 0,0 }
 686 };
 687
 688 struct nv_skb_map {
 689         struct sk_buff *skb;
 690         dma_addr_t dma;
 691         unsigned int dma_len;
 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         /* General data:
 710          * Locking: spin_lock(&np->lock); */
 711         struct net_device_stats stats;
 712         struct nv_ethtool_stats estats;
 713         int in_shutdown;
 714         u32 linkspeed;
 715         int duplex;
 716         int autoneg;
 717         int fixed_mode;
 718         int phyaddr;
 719         int wolenabled;
 720         unsigned int phy_oui;
 721         unsigned int phy_model;
 722         u16 gigabit;
 723         int intr_test;
 724         int recover_error;
 725
 726         /* General data: RO fields */
 727         dma_addr_t ring_addr;
 728         struct pci_dev *pci_dev;
 729         u32 orig_mac[2];
 730         u32 irqmask;
 731         u32 desc_ver;
 732         u32 txrxctl_bits;
 733         u32 vlanctl_bits;
 734         u32 driver_data;
 735         u32 register_size;
 736         int rx_csum;
 737         u32 mac_in_use;
 738
 739         void __iomem *base;
 740
 741         /* rx specific fields.
 742          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 743          */
 744         union ring_type get_rx, put_rx, first_rx, last_rx;
 745         struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 746         struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 747         struct nv_skb_map *rx_skb;
 748
 749         union ring_type rx_ring;
 750         unsigned int rx_buf_sz;
 751         unsigned int pkt_limit;
 752         struct timer_list oom_kick;
 753         struct timer_list nic_poll;
 754         struct timer_list stats_poll;
 755         u32 nic_poll_irq;
 756         int rx_ring_size;
 757
 758         /* media detection workaround.
 759          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 760          */
 761         int need_linktimer;
 762         unsigned long link_timeout;
 763         /*
 764          * tx specific fields.
 765          */
 766         union ring_type get_tx, put_tx, first_tx, last_tx;
 767         struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 768         struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 769         struct nv_skb_map *tx_skb;
 770
 771         union ring_type tx_ring;
 772         u32 tx_flags;
 773         int tx_ring_size;
 774         int tx_stop;
 775
 776         /* vlan fields */
 777         struct vlan_group *vlangrp;
 778
 779         /* msi/msi-x fields */
 780         u32 msi_flags;
 781         struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 782
 783         /* flow control */
 784         u32 pause_flags;
 785 };
 786
 787 /*
 788  * Maximum number of loops until we assume that a bit in the irq mask
 789  * is stuck. Overridable with module param.
 790  */
 791 static int max_interrupt_work = 5;
 792
 793 /*
 794  * Optimization can be either throuput mode or cpu mode
 795  *
 796  * Throughput Mode: Every tx and rx packet will generate an interrupt.
 797  * CPU Mode: Interrupts are controlled by a timer.
 798  */
 799 enum {
 800         NV_OPTIMIZATION_MODE_THROUGHPUT,
 801         NV_OPTIMIZATION_MODE_CPU
 802 };
 803 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 804
 805 /*
 806  * Poll interval for timer irq
 807  *
 808  * This interval determines how frequent an interrupt is generated.
 809  * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 810  * Min = 0, and Max = 65535
 811  */
 812 static int poll_interval = -1;
 813
 814 /*
 815  * MSI interrupts
 816  */
 817 enum {
 818         NV_MSI_INT_DISABLED,
 819         NV_MSI_INT_ENABLED
 820 };
 821 static int msi = NV_MSI_INT_ENABLED;
 822
 823 /*
 824  * MSIX interrupts
 825  */
 826 enum {
 827         NV_MSIX_INT_DISABLED,
 828         NV_MSIX_INT_ENABLED
 829 };
 830 static int msix = NV_MSIX_INT_ENABLED;
 831
 832 /*
 833  * DMA 64bit
 834  */
 835 enum {
 836         NV_DMA_64BIT_DISABLED,
 837         NV_DMA_64BIT_ENABLED
 838 };
 839 static int dma_64bit = NV_DMA_64BIT_ENABLED;
 840
 841 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 842 {
 843         return netdev_priv(dev);
 844 }
 845
 846 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 847 {
 848         return ((struct fe_priv *)netdev_priv(dev))->base;
 849 }
 850
 851 static inline void pci_push(u8 __iomem *base)
 852 {
 853         /* force out pending posted writes */
 854         readl(base);
 855 }
 856
 857 static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 858 {
 859         return le32_to_cpu(prd->flaglen)
 860                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 861 }
 862
 863 static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 864 {
 865         return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 866 }
 867
 868 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 869                                 int delay, int delaymax, const char *msg)
 870 {
 871         u8 __iomem *base = get_hwbase(dev);
 872
 873         pci_push(base);
 874         do {
 875                 udelay(delay);
 876                 delaymax -= delay;
 877                 if (delaymax < 0) {
 878                         if (msg)
 879                                 printk(msg);
 880                         return 1;
 881                 }
 882         } while ((readl(base + offset) & mask) != target);
 883         return 0;
 884 }
 885
 886 #define NV_SETUP_RX_RING 0x01
 887 #define NV_SETUP_TX_RING 0x02
 888
 889 static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
 890 {
 891         struct fe_priv *np = get_nvpriv(dev);
 892         u8 __iomem *base = get_hwbase(dev);
 893
 894         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 895                 if (rxtx_flags & NV_SETUP_RX_RING) {
 896                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 897                 }
 898                 if (rxtx_flags & NV_SETUP_TX_RING) {
 899                         writel((u32) cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
 900                 }
 901         } else {
 902                 if (rxtx_flags & NV_SETUP_RX_RING) {
 903                         writel((u32) cpu_to_le64(np->ring_addr), base + NvRegRxRingPhysAddr);
 904                         writel((u32) (cpu_to_le64(np->ring_addr) >> 32), base + NvRegRxRingPhysAddrHigh);
 905                 }
 906                 if (rxtx_flags & NV_SETUP_TX_RING) {
 907                         writel((u32) cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
 908                         writel((u32) (cpu_to_le64(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)) >> 32), base + NvRegTxRingPhysAddrHigh);
 909                 }
 910         }
 911 }
 912
 913 static void free_rings(struct net_device *dev)
 914 {
 915         struct fe_priv *np = get_nvpriv(dev);
 916
 917         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
 918                 if (np->rx_ring.orig)
 919                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
 920                                             np->rx_ring.orig, np->ring_addr);
 921         } else {
 922                 if (np->rx_ring.ex)
 923                         pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
 924                                             np->rx_ring.ex, np->ring_addr);
 925         }
 926         if (np->rx_skb)
 927                 kfree(np->rx_skb);
 928         if (np->tx_skb)
 929                 kfree(np->tx_skb);
 930 }
 931
 932 static int using_multi_irqs(struct net_device *dev)
 933 {
 934         struct fe_priv *np = get_nvpriv(dev);
 935
 936         if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
 937             ((np->msi_flags & NV_MSI_X_ENABLED) &&
 938              ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
 939                 return 0;
 940         else
 941                 return 1;
 942 }
 943
 944 static void nv_enable_irq(struct net_device *dev)
 945 {
 946         struct fe_priv *np = get_nvpriv(dev);
 947
 948         if (!using_multi_irqs(dev)) {
 949                 if (np->msi_flags & NV_MSI_X_ENABLED)
 950                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
 951                 else
 952                         enable_irq(dev->irq);
 953         } else {
 954                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 955                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 956                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 957         }
 958 }
 959
 960 static void nv_disable_irq(struct net_device *dev)
 961 {
 962         struct fe_priv *np = get_nvpriv(dev);
 963
 964         if (!using_multi_irqs(dev)) {
 965                 if (np->msi_flags & NV_MSI_X_ENABLED)
 966                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
 967                 else
 968                         disable_irq(dev->irq);
 969         } else {
 970                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 971                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 972                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 973         }
 974 }
 975
 976 /* In MSIX mode, a write to irqmask behaves as XOR */
 977 static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
 978 {
 979         u8 __iomem *base = get_hwbase(dev);
 980
 981         writel(mask, base + NvRegIrqMask);
 982 }
 983
 984 static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
 985 {
 986         struct fe_priv *np = get_nvpriv(dev);
 987         u8 __iomem *base = get_hwbase(dev);
 988
 989         if (np->msi_flags & NV_MSI_X_ENABLED) {
 990                 writel(mask, base + NvRegIrqMask);
 991         } else {
 992                 if (np->msi_flags & NV_MSI_ENABLED)
 993                         writel(0, base + NvRegMSIIrqMask);
 994                 writel(0, base + NvRegIrqMask);
 995         }
 996 }
 997
 998 #define MII_READ        (-1)
 999 /* mii_rw: read/write a register on the PHY.
1000  *
1001  * Caller must guarantee serialization
1002  */
1003 static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1004 {
1005         u8 __iomem *base = get_hwbase(dev);
1006         u32 reg;
1007         int retval;
1008
1009         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
1010
1011         reg = readl(base + NvRegMIIControl);
1012         if (reg & NVREG_MIICTL_INUSE) {
1013                 writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1014                 udelay(NV_MIIBUSY_DELAY);
1015         }
1016
1017         reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1018         if (value != MII_READ) {
1019                 writel(value, base + NvRegMIIData);
1020                 reg |= NVREG_MIICTL_WRITE;
1021         }
1022         writel(reg, base + NvRegMIIControl);
1023
1024         if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1025                         NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
1026                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n",
1027                                 dev->name, miireg, addr);
1028                 retval = -1;
1029         } else if (value != MII_READ) {
1030                 /* it was a write operation - fewer failures are detectable */
1031                 dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n",
1032                                 dev->name, value, miireg, addr);
1033                 retval = 0;
1034         } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1035                 dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n",
1036                                 dev->name, miireg, addr);
1037                 retval = -1;
1038         } else {
1039                 retval = readl(base + NvRegMIIData);
1040                 dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n",
1041                                 dev->name, miireg, addr, retval);
1042         }
1043
1044         return retval;
1045 }
1046
1047 static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1048 {
1049         struct fe_priv *np = netdev_priv(dev);
1050         u32 miicontrol;
1051         unsigned int tries = 0;
1052
1053         miicontrol = BMCR_RESET | bmcr_setup;
1054         if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol)) {
1055                 return -1;
1056         }
1057
1058         /* wait for 500ms */
1059         msleep(500);
1060
1061         /* must wait till reset is deasserted */
1062         while (miicontrol & BMCR_RESET) {
1063                 msleep(10);
1064                 miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1065                 /* FIXME: 100 tries seem excessive */
1066                 if (tries++ > 100)
1067                         return -1;
1068         }
1069         return 0;
1070 }
1071
1072 static int phy_init(struct net_device *dev)
1073 {
1074         struct fe_priv *np = get_nvpriv(dev);
1075         u8 __iomem *base = get_hwbase(dev);
1076         u32 phyinterface, phy_reserved, mii_status, mii_control, mii_control_1000,reg;
1077
1078         /* phy errata for E3016 phy */
1079         if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1080                 reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1081                 reg &= ~PHY_MARVELL_E3016_INITMASK;
1082                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1083                         printk(KERN_INFO "%s: phy write to errata reg failed.\n", pci_name(np->pci_dev));
1084                         return PHY_ERROR;
1085                 }
1086         }
1087
1088         /* set advertise register */
1089         reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1090         reg |= (ADVERTISE_10HALF|ADVERTISE_10FULL|ADVERTISE_100HALF|ADVERTISE_100FULL|ADVERTISE_PAUSE_ASYM|ADVERTISE_PAUSE_CAP);
1091         if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1092                 printk(KERN_INFO "%s: phy write to advertise failed.\n", pci_name(np->pci_dev));
1093                 return PHY_ERROR;
1094         }
1095
1096         /* get phy interface type */
1097         phyinterface = readl(base + NvRegPhyInterface);
1098
1099         /* see if gigabit phy */
1100         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1101         if (mii_status & PHY_GIGABIT) {
1102                 np->gigabit = PHY_GIGABIT;
1103                 mii_control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
1104                 mii_control_1000 &= ~ADVERTISE_1000HALF;
1105                 if (phyinterface & PHY_RGMII)
1106                         mii_control_1000 |= ADVERTISE_1000FULL;
1107                 else
1108                         mii_control_1000 &= ~ADVERTISE_1000FULL;
1109
1110                 if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1111                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1112                         return PHY_ERROR;
1113                 }
1114         }
1115         else
1116                 np->gigabit = 0;
1117
1118         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1119         mii_control |= BMCR_ANENABLE;
1120
1121         /* reset the phy
1122          * (certain phys need bmcr to be setup with reset)
1123          */
1124         if (phy_reset(dev, mii_control)) {
1125                 printk(KERN_INFO "%s: phy reset failed\n", pci_name(np->pci_dev));
1126                 return PHY_ERROR;
1127         }
1128
1129         /* phy vendor specific configuration */
1130         if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII) ) {
1131                 phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1132                 phy_reserved &= ~(PHY_INIT1 | PHY_INIT2);
1133                 phy_reserved |= (PHY_INIT3 | PHY_INIT4);
1134                 if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved)) {
1135                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1136                         return PHY_ERROR;
1137                 }
1138                 phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1139                 phy_reserved |= PHY_INIT5;
1140                 if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved)) {
1141                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1142                         return PHY_ERROR;
1143                 }
1144         }
1145         if (np->phy_oui == PHY_OUI_CICADA) {
1146                 phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1147                 phy_reserved |= PHY_INIT6;
1148                 if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved)) {
1149                         printk(KERN_INFO "%s: phy init failed.\n", pci_name(np->pci_dev));
1150                         return PHY_ERROR;
1151                 }
1152         }
1153         /* some phys clear out pause advertisment on reset, set it back */
1154         mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1155
1156         /* restart auto negotiation */
1157         mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1158         mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1159         if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1160                 return PHY_ERROR;
1161         }
1162
1163         return 0;
1164 }
1165
1166 static void nv_start_rx(struct net_device *dev)
1167 {
1168         struct fe_priv *np = netdev_priv(dev);
1169         u8 __iomem *base = get_hwbase(dev);
1170         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1171
1172         dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
1173         /* Already running? Stop it. */
1174         if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1175                 rx_ctrl &= ~NVREG_RCVCTL_START;
1176                 writel(rx_ctrl, base + NvRegReceiverControl);
1177                 pci_push(base);
1178         }
1179         writel(np->linkspeed, base + NvRegLinkSpeed);
1180         pci_push(base);
1181         rx_ctrl |= NVREG_RCVCTL_START;
1182         if (np->mac_in_use)
1183                 rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1184         writel(rx_ctrl, base + NvRegReceiverControl);
1185         dprintk(KERN_DEBUG "%s: nv_start_rx to duplex %d, speed 0x%08x.\n",
1186                                 dev->name, np->duplex, np->linkspeed);
1187         pci_push(base);
1188 }
1189
1190 static void nv_stop_rx(struct net_device *dev)
1191 {
1192         struct fe_priv *np = netdev_priv(dev);
1193         u8 __iomem *base = get_hwbase(dev);
1194         u32 rx_ctrl = readl(base + NvRegReceiverControl);
1195
1196         dprintk(KERN_DEBUG "%s: nv_stop_rx\n", dev->name);
1197         if (!np->mac_in_use)
1198                 rx_ctrl &= ~NVREG_RCVCTL_START;
1199         else
1200                 rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1201         writel(rx_ctrl, base + NvRegReceiverControl);
1202         reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1203                         NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
1204                         KERN_INFO "nv_stop_rx: ReceiverStatus remained busy");
1205
1206         udelay(NV_RXSTOP_DELAY2);
1207         if (!np->mac_in_use)
1208                 writel(0, base + NvRegLinkSpeed);
1209 }
1210
1211 static void nv_start_tx(struct net_device *dev)
1212 {
1213         struct fe_priv *np = netdev_priv(dev);
1214         u8 __iomem *base = get_hwbase(dev);
1215         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1216
1217         dprintk(KERN_DEBUG "%s: nv_start_tx\n", dev->name);
1218         tx_ctrl |= NVREG_XMITCTL_START;
1219         if (np->mac_in_use)
1220                 tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1221         writel(tx_ctrl, base + NvRegTransmitterControl);
1222         pci_push(base);
1223 }
1224
1225 static void nv_stop_tx(struct net_device *dev)
1226 {
1227         struct fe_priv *np = netdev_priv(dev);
1228         u8 __iomem *base = get_hwbase(dev);
1229         u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1230
1231         dprintk(KERN_DEBUG "%s: nv_stop_tx\n", dev->name);
1232         if (!np->mac_in_use)
1233                 tx_ctrl &= ~NVREG_XMITCTL_START;
1234         else
1235                 tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1236         writel(tx_ctrl, base + NvRegTransmitterControl);
1237         reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1238                         NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
1239                         KERN_INFO "nv_stop_tx: TransmitterStatus remained busy");
1240
1241         udelay(NV_TXSTOP_DELAY2);
1242         if (!np->mac_in_use)
1243                 writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1244                        base + NvRegTransmitPoll);
1245 }
1246
1247 static void nv_txrx_reset(struct net_device *dev)
1248 {
1249         struct fe_priv *np = netdev_priv(dev);
1250         u8 __iomem *base = get_hwbase(dev);
1251
1252         dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
1253         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1254         pci_push(base);
1255         udelay(NV_TXRX_RESET_DELAY);
1256         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1257         pci_push(base);
1258 }
1259
1260 static void nv_mac_reset(struct net_device *dev)
1261 {
1262         struct fe_priv *np = netdev_priv(dev);
1263         u8 __iomem *base = get_hwbase(dev);
1264
1265         dprintk(KERN_DEBUG "%s: nv_mac_reset\n", dev->name);
1266         writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1267         pci_push(base);
1268         writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1269         pci_push(base);
1270         udelay(NV_MAC_RESET_DELAY);
1271         writel(0, base + NvRegMacReset);
1272         pci_push(base);
1273         udelay(NV_MAC_RESET_DELAY);
1274         writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1275         pci_push(base);
1276 }
1277
1278 /*
1279  * nv_get_stats: dev->get_stats function
1280  * Get latest stats value from the nic.
1281  * Called with read_lock(&dev_base_lock) held for read -
1282  * only synchronized against unregister_netdevice.
1283  */
1284 static struct net_device_stats *nv_get_stats(struct net_device *dev)
1285 {
1286         struct fe_priv *np = netdev_priv(dev);
1287
1288         /* It seems that the nic always generates interrupts and doesn't
1289          * accumulate errors internally. Thus the current values in np->stats
1290          * are already up to date.
1291          */
1292         return &np->stats;
1293 }
1294
1295 /*
1296  * nv_alloc_rx: fill rx ring entries.
1297  * Return 1 if the allocations for the skbs failed and the
1298  * rx engine is without Available descriptors
1299  */
1300 static int nv_alloc_rx(struct net_device *dev)
1301 {
1302         struct fe_priv *np = netdev_priv(dev);
1303         struct ring_desc* less_rx;
1304
1305         less_rx = np->get_rx.orig;
1306         if (less_rx-- == np->first_rx.orig)
1307                 less_rx = np->last_rx.orig;
1308
1309         while (np->put_rx.orig != less_rx) {
1310                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1311                 if (skb) {
1312                         skb->dev = dev;
1313                         np->put_rx_ctx->skb = skb;
1314                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev, skb->data,
1315                                                              skb->end-skb->data, PCI_DMA_FROMDEVICE);
1316                         np->put_rx_ctx->dma_len = skb->end-skb->data;
1317                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1318                         wmb();
1319                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1320                         if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1321                                 np->put_rx.orig = np->first_rx.orig;
1322                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1323                                 np->put_rx_ctx = np->first_rx_ctx;
1324                 } else {
1325                         return 1;
1326                 }
1327         }
1328         return 0;
1329 }
1330
1331 static int nv_alloc_rx_optimized(struct net_device *dev)
1332 {
1333         struct fe_priv *np = netdev_priv(dev);
1334         struct ring_desc_ex* less_rx;
1335
1336         less_rx = np->get_rx.ex;
1337         if (less_rx-- == np->first_rx.ex)
1338                 less_rx = np->last_rx.ex;
1339
1340         while (np->put_rx.ex != less_rx) {
1341                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
1342                 if (skb) {
1343                         skb->dev = dev;
1344                         np->put_rx_ctx->skb = skb;
1345                         np->put_rx_ctx->dma = pci_map_single(np->pci_dev, skb->data,
1346                                                              skb->end-skb->data, PCI_DMA_FROMDEVICE);
1347                         np->put_rx_ctx->dma_len = skb->end-skb->data;
1348                         np->put_rx.ex->bufhigh = cpu_to_le64(np->put_rx_ctx->dma) >> 32;
1349                         np->put_rx.ex->buflow = cpu_to_le64(np->put_rx_ctx->dma) & 0x0FFFFFFFF;
1350                         wmb();
1351                         np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1352                         if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1353                                 np->put_rx.ex = np->first_rx.ex;
1354                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1355                                 np->put_rx_ctx = np->first_rx_ctx;
1356                 } else {
1357                         return 1;
1358                 }
1359         }
1360         return 0;
1361 }
1362
1363 /* If rx bufs are exhausted called after 50ms to attempt to refresh */
1364 #ifdef CONFIG_FORCEDETH_NAPI
1365 static void nv_do_rx_refill(unsigned long data)
1366 {
1367         struct net_device *dev = (struct net_device *) data;
1368
1369         /* Just reschedule NAPI rx processing */
1370         netif_rx_schedule(dev);
1371 }
1372 #else
1373 static void nv_do_rx_refill(unsigned long data)
1374 {
1375         struct net_device *dev = (struct net_device *) data;
1376         struct fe_priv *np = netdev_priv(dev);
1377         int retcode;
1378
1379         if (!using_multi_irqs(dev)) {
1380                 if (np->msi_flags & NV_MSI_X_ENABLED)
1381                         disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1382                 else
1383                         disable_irq(dev->irq);
1384         } else {
1385                 disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1386         }
1387         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1388                 retcode = nv_alloc_rx(dev);
1389         else
1390                 retcode = nv_alloc_rx_optimized(dev);
1391         if (retcode) {
1392                 spin_lock_irq(&np->lock);
1393                 if (!np->in_shutdown)
1394                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
1395                 spin_unlock_irq(&np->lock);
1396         }
1397         if (!using_multi_irqs(dev)) {
1398                 if (np->msi_flags & NV_MSI_X_ENABLED)
1399                         enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1400                 else
1401                         enable_irq(dev->irq);
1402         } else {
1403                 enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1404         }
1405 }
1406 #endif
1407
1408 static void nv_init_rx(struct net_device *dev)
1409 {
1410         struct fe_priv *np = netdev_priv(dev);
1411         int i;
1412         np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1413         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1414                 np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1415         else
1416                 np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1417         np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1418         np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1419
1420         for (i = 0; i < np->rx_ring_size; i++) {
1421                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1422                         np->rx_ring.orig[i].flaglen = 0;
1423                         np->rx_ring.orig[i].buf = 0;
1424                 } else {
1425                         np->rx_ring.ex[i].flaglen = 0;
1426                         np->rx_ring.ex[i].txvlan = 0;
1427                         np->rx_ring.ex[i].bufhigh = 0;
1428                         np->rx_ring.ex[i].buflow = 0;
1429                 }
1430                 np->rx_skb[i].skb = NULL;
1431                 np->rx_skb[i].dma = 0;
1432         }
1433 }
1434
1435 static void nv_init_tx(struct net_device *dev)
1436 {
1437         struct fe_priv *np = netdev_priv(dev);
1438         int i;
1439         np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1440         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1441                 np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1442         else
1443                 np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1444         np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1445         np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1446
1447         for (i = 0; i < np->tx_ring_size; i++) {
1448                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1449                         np->tx_ring.orig[i].flaglen = 0;
1450                         np->tx_ring.orig[i].buf = 0;
1451                 } else {
1452                         np->tx_ring.ex[i].flaglen = 0;
1453                         np->tx_ring.ex[i].txvlan = 0;
1454                         np->tx_ring.ex[i].bufhigh = 0;
1455                         np->tx_ring.ex[i].buflow = 0;
1456                 }
1457                 np->tx_skb[i].skb = NULL;
1458                 np->tx_skb[i].dma = 0;
1459         }
1460 }
1461
1462 static int nv_init_ring(struct net_device *dev)
1463 {
1464         struct fe_priv *np = netdev_priv(dev);
1465
1466         nv_init_tx(dev);
1467         nv_init_rx(dev);
1468         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1469                 return nv_alloc_rx(dev);
1470         else
1471                 return nv_alloc_rx_optimized(dev);
1472 }
1473
1474 static int nv_release_txskb(struct net_device *dev, struct nv_skb_map* tx_skb)
1475 {
1476         struct fe_priv *np = netdev_priv(dev);
1477
1478         if (tx_skb->dma) {
1479                 pci_unmap_page(np->pci_dev, tx_skb->dma,
1480                                tx_skb->dma_len,
1481                                PCI_DMA_TODEVICE);
1482                 tx_skb->dma = 0;
1483         }
1484         if (tx_skb->skb) {
1485                 dev_kfree_skb_any(tx_skb->skb);
1486                 tx_skb->skb = NULL;
1487                 return 1;
1488         } else {
1489                 return 0;
1490         }
1491 }
1492
1493 static void nv_drain_tx(struct net_device *dev)
1494 {
1495         struct fe_priv *np = netdev_priv(dev);
1496         unsigned int i;
1497
1498         for (i = 0; i < np->tx_ring_size; i++) {
1499                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1500                         np->tx_ring.orig[i].flaglen = 0;
1501                         np->tx_ring.orig[i].buf = 0;
1502                 } else {
1503                         np->tx_ring.ex[i].flaglen = 0;
1504                         np->tx_ring.ex[i].txvlan = 0;
1505                         np->tx_ring.ex[i].bufhigh = 0;
1506                         np->tx_ring.ex[i].buflow = 0;
1507                 }
1508                 if (nv_release_txskb(dev, &np->tx_skb[i]))
1509                         np->stats.tx_dropped++;
1510         }
1511 }
1512
1513 static void nv_drain_rx(struct net_device *dev)
1514 {
1515         struct fe_priv *np = netdev_priv(dev);
1516         int i;
1517
1518         for (i = 0; i < np->rx_ring_size; i++) {
1519                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1520                         np->rx_ring.orig[i].flaglen = 0;
1521                         np->rx_ring.orig[i].buf = 0;
1522                 } else {
1523                         np->rx_ring.ex[i].flaglen = 0;
1524                         np->rx_ring.ex[i].txvlan = 0;
1525                         np->rx_ring.ex[i].bufhigh = 0;
1526                         np->rx_ring.ex[i].buflow = 0;
1527                 }
1528                 wmb();
1529                 if (np->rx_skb[i].skb) {
1530                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
1531                                                 np->rx_skb[i].skb->end-np->rx_skb[i].skb->data,
1532                                                 PCI_DMA_FROMDEVICE);
1533                         dev_kfree_skb(np->rx_skb[i].skb);
1534                         np->rx_skb[i].skb = NULL;
1535                 }
1536         }
1537 }
1538
1539 static void drain_ring(struct net_device *dev)
1540 {
1541         nv_drain_tx(dev);
1542         nv_drain_rx(dev);
1543 }
1544
1545 static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
1546 {
1547         return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
1548 }
1549
1550 /*
1551  * nv_start_xmit: dev->hard_start_xmit function
1552  * Called with netif_tx_lock held.
1553  */
1554 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1555 {
1556         struct fe_priv *np = netdev_priv(dev);
1557         u32 tx_flags = 0;
1558         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
1559         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1560         unsigned int i;
1561         u32 offset = 0;
1562         u32 bcnt;
1563         u32 size = skb->len-skb->data_len;
1564         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1565         u32 empty_slots;
1566         struct ring_desc* put_tx;
1567         struct ring_desc* start_tx;
1568         struct ring_desc* prev_tx;
1569         struct nv_skb_map* prev_tx_ctx;
1570
1571         /* add fragments to entries count */
1572         for (i = 0; i < fragments; i++) {
1573                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1574                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1575         }
1576
1577         empty_slots = nv_get_empty_tx_slots(np);
1578         if (unlikely(empty_slots <= entries)) {
1579                 spin_lock_irq(&np->lock);
1580                 netif_stop_queue(dev);
1581                 np->tx_stop = 1;
1582                 spin_unlock_irq(&np->lock);
1583                 return NETDEV_TX_BUSY;
1584         }
1585
1586         start_tx = put_tx = np->put_tx.orig;
1587
1588         /* setup the header buffer */
1589         do {
1590                 prev_tx = put_tx;
1591                 prev_tx_ctx = np->put_tx_ctx;
1592                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1593                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1594                                                 PCI_DMA_TODEVICE);
1595                 np->put_tx_ctx->dma_len = bcnt;
1596                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
1597                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1598
1599                 tx_flags = np->tx_flags;
1600                 offset += bcnt;
1601                 size -= bcnt;
1602                 if (unlikely(put_tx++ == np->last_tx.orig))
1603                         put_tx = np->first_tx.orig;
1604                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1605                         np->put_tx_ctx = np->first_tx_ctx;
1606         } while (size);
1607
1608         /* setup the fragments */
1609         for (i = 0; i < fragments; i++) {
1610                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1611                 u32 size = frag->size;
1612                 offset = 0;
1613
1614                 do {
1615                         prev_tx = put_tx;
1616                         prev_tx_ctx = np->put_tx_ctx;
1617                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1618                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1619                                                            PCI_DMA_TODEVICE);
1620                         np->put_tx_ctx->dma_len = bcnt;
1621                         put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
1622                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1623
1624                         offset += bcnt;
1625                         size -= bcnt;
1626                         if (unlikely(put_tx++ == np->last_tx.orig))
1627                                 put_tx = np->first_tx.orig;
1628                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1629                                 np->put_tx_ctx = np->first_tx_ctx;
1630                 } while (size);
1631         }
1632
1633         /* set last fragment flag  */
1634         prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
1635
1636         /* save skb in this slot's context area */
1637         prev_tx_ctx->skb = skb;
1638
1639         if (skb_is_gso(skb))
1640                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
1641         else
1642                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
1643                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
1644
1645         spin_lock_irq(&np->lock);
1646
1647         /* set tx flags */
1648         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
1649         np->put_tx.orig = put_tx;
1650
1651         spin_unlock_irq(&np->lock);
1652
1653         dprintk(KERN_DEBUG "%s: nv_start_xmit: entries %d queued for transmission. tx_flags_extra: %x\n",
1654                 dev->name, entries, tx_flags_extra);
1655         {
1656                 int j;
1657                 for (j=0; j<64; j++) {
1658                         if ((j%16) == 0)
1659                                 dprintk("\n%03x:", j);
1660                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
1661                 }
1662                 dprintk("\n");
1663         }
1664
1665         dev->trans_start = jiffies;
1666         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1667         return NETDEV_TX_OK;
1668 }
1669
1670 static int nv_start_xmit_optimized(struct sk_buff *skb, struct net_device *dev)
1671 {
1672         struct fe_priv *np = netdev_priv(dev);
1673         u32 tx_flags = 0;
1674         u32 tx_flags_extra;
1675         unsigned int fragments = skb_shinfo(skb)->nr_frags;
1676         unsigned int i;
1677         u32 offset = 0;
1678         u32 bcnt;
1679         u32 size = skb->len-skb->data_len;
1680         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1681         u32 empty_slots;
1682         struct ring_desc_ex* put_tx;
1683         struct ring_desc_ex* start_tx;
1684         struct ring_desc_ex* prev_tx;
1685         struct nv_skb_map* prev_tx_ctx;
1686
1687         /* add fragments to entries count */
1688         for (i = 0; i < fragments; i++) {
1689                 entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
1690                            ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
1691         }
1692
1693         empty_slots = nv_get_empty_tx_slots(np);
1694         if (unlikely(empty_slots <= entries)) {
1695                 spin_lock_irq(&np->lock);
1696                 netif_stop_queue(dev);
1697                 np->tx_stop = 1;
1698                 spin_unlock_irq(&np->lock);
1699                 return NETDEV_TX_BUSY;
1700         }
1701
1702         start_tx = put_tx = np->put_tx.ex;
1703
1704         /* setup the header buffer */
1705         do {
1706                 prev_tx = put_tx;
1707                 prev_tx_ctx = np->put_tx_ctx;
1708                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1709                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
1710                                                 PCI_DMA_TODEVICE);
1711                 np->put_tx_ctx->dma_len = bcnt;
1712                 put_tx->bufhigh = cpu_to_le64(np->put_tx_ctx->dma) >> 32;
1713                 put_tx->buflow = cpu_to_le64(np->put_tx_ctx->dma) & 0x0FFFFFFFF;
1714                 put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1715
1716                 tx_flags = NV_TX2_VALID;
1717                 offset += bcnt;
1718                 size -= bcnt;
1719                 if (unlikely(put_tx++ == np->last_tx.ex))
1720                         put_tx = np->first_tx.ex;
1721                 if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1722                         np->put_tx_ctx = np->first_tx_ctx;
1723         } while (size);
1724
1725         /* setup the fragments */
1726         for (i = 0; i < fragments; i++) {
1727                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1728                 u32 size = frag->size;
1729                 offset = 0;
1730
1731                 do {
1732                         prev_tx = put_tx;
1733                         prev_tx_ctx = np->put_tx_ctx;
1734                         bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
1735                         np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
1736                                                            PCI_DMA_TODEVICE);
1737                         np->put_tx_ctx->dma_len = bcnt;
1738                         put_tx->bufhigh = cpu_to_le64(np->put_tx_ctx->dma) >> 32;
1739                         put_tx->buflow = cpu_to_le64(np->put_tx_ctx->dma) & 0x0FFFFFFFF;
1740                         put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
1741
1742                         offset += bcnt;
1743                         size -= bcnt;
1744                         if (unlikely(put_tx++ == np->last_tx.ex))
1745                                 put_tx = np->first_tx.ex;
1746                         if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
1747                                 np->put_tx_ctx = np->first_tx_ctx;
1748                 } while (size);
1749         }
1750
1751         /* set last fragment flag  */
1752         prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
1753
1754         /* save skb in this slot's context area */
1755         prev_tx_ctx->skb = skb;
1756
1757         if (skb_is_gso(skb))
1758                 tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
1759         else
1760                 tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
1761                          NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
1762
1763         /* vlan tag */
1764         if (likely(!np->vlangrp)) {
1765                 start_tx->txvlan = 0;
1766         } else {
1767                 if (vlan_tx_tag_present(skb))
1768                         start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb));
1769                 else
1770                         start_tx->txvlan = 0;
1771         }
1772
1773         spin_lock_irq(&np->lock);
1774
1775         /* set tx flags */
1776         start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
1777         np->put_tx.ex = put_tx;
1778
1779         spin_unlock_irq(&np->lock);
1780
1781         dprintk(KERN_DEBUG "%s: nv_start_xmit_optimized: entries %d queued for transmission. tx_flags_extra: %x\n",
1782                 dev->name, entries, tx_flags_extra);
1783         {
1784                 int j;
1785                 for (j=0; j<64; j++) {
1786                         if ((j%16) == 0)
1787                                 dprintk("\n%03x:", j);
1788                         dprintk(" %02x", ((unsigned char*)skb->data)[j]);
1789                 }
1790                 dprintk("\n");
1791         }
1792
1793         dev->trans_start = jiffies;
1794         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
1795         return NETDEV_TX_OK;
1796 }
1797
1798 /*
1799  * nv_tx_done: check for completed packets, release the skbs.
1800  *
1801  * Caller must own np->lock.
1802  */
1803 static void nv_tx_done(struct net_device *dev)
1804 {
1805         struct fe_priv *np = netdev_priv(dev);
1806         u32 flags;
1807         struct ring_desc* orig_get_tx = np->get_tx.orig;
1808
1809         while ((np->get_tx.orig != np->put_tx.orig) &&
1810                !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID)) {
1811
1812                 dprintk(KERN_DEBUG "%s: nv_tx_done: flags 0x%x.\n",
1813                                         dev->name, flags);
1814
1815                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
1816                                np->get_tx_ctx->dma_len,
1817                                PCI_DMA_TODEVICE);
1818                 np->get_tx_ctx->dma = 0;
1819
1820                 if (np->desc_ver == DESC_VER_1) {
1821                         if (flags & NV_TX_LASTPACKET) {
1822                                 if (flags & NV_TX_ERROR) {
1823                                         if (flags & NV_TX_UNDERFLOW)
1824                                                 np->stats.tx_fifo_errors++;
1825                                         if (flags & NV_TX_CARRIERLOST)
1826                                                 np->stats.tx_carrier_errors++;
1827                                         np->stats.tx_errors++;
1828                                 } else {
1829                                         np->stats.tx_packets++;
1830                                         np->stats.tx_bytes += np->get_tx_ctx->skb->len;
1831                                 }
1832                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
1833                                 np->get_tx_ctx->skb = NULL;
1834                         }
1835                 } else {
1836                         if (flags & NV_TX2_LASTPACKET) {
1837                                 if (flags & NV_TX2_ERROR) {
1838                                         if (flags & NV_TX2_UNDERFLOW)
1839                                                 np->stats.tx_fifo_errors++;
1840                                         if (flags & NV_TX2_CARRIERLOST)
1841                                                 np->stats.tx_carrier_errors++;
1842                                         np->stats.tx_errors++;
1843                                 } else {
1844                                         np->stats.tx_packets++;
1845                                         np->stats.tx_bytes += np->get_tx_ctx->skb->len;
1846                                 }
1847                                 dev_kfree_skb_any(np->get_tx_ctx->skb);
1848                                 np->get_tx_ctx->skb = NULL;
1849                         }
1850                 }
1851                 if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
1852                         np->get_tx.orig = np->first_tx.orig;
1853                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
1854                         np->get_tx_ctx = np->first_tx_ctx;
1855         }
1856         if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
1857                 np->tx_stop = 0;
1858                 netif_wake_queue(dev);
1859         }
1860 }
1861
1862 static void nv_tx_done_optimized(struct net_device *dev)
1863 {
1864         struct fe_priv *np = netdev_priv(dev);
1865         u32 flags;
1866         struct ring_desc_ex* orig_get_tx = np->get_tx.ex;
1867
1868         while ((np->get_tx.ex != np->put_tx.ex) &&
1869                !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX_VALID)) {
1870
1871                 dprintk(KERN_DEBUG "%s: nv_tx_done_optimized: flags 0x%x.\n",
1872                                         dev->name, flags);
1873
1874                 pci_unmap_page(np->pci_dev, np->get_tx_ctx->dma,
1875                                np->get_tx_ctx->dma_len,
1876                                PCI_DMA_TODEVICE);
1877                 np->get_tx_ctx->dma = 0;
1878
1879                 if (flags & NV_TX2_LASTPACKET) {
1880                         if (flags & NV_TX2_ERROR) {
1881                                 if (flags & NV_TX2_UNDERFLOW)
1882                                         np->stats.tx_fifo_errors++;
1883                                 if (flags & NV_TX2_CARRIERLOST)
1884                                         np->stats.tx_carrier_errors++;
1885                                 np->stats.tx_errors++;
1886                         } else {
1887                                 np->stats.tx_packets++;
1888                                 np->stats.tx_bytes += np->get_tx_ctx->skb->len;
1889                         }
1890                         dev_kfree_skb_any(np->get_tx_ctx->skb);
1891                         np->get_tx_ctx->skb = NULL;
1892                 }
1893                 if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
1894                         np->get_tx.ex = np->first_tx.ex;
1895                 if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
1896                         np->get_tx_ctx = np->first_tx_ctx;
1897         }
1898         if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
1899                 np->tx_stop = 0;
1900                 netif_wake_queue(dev);
1901         }
1902 }
1903
1904 /*
1905  * nv_tx_timeout: dev->tx_timeout function
1906  * Called with netif_tx_lock held.
1907  */
1908 static void nv_tx_timeout(struct net_device *dev)
1909 {
1910         struct fe_priv *np = netdev_priv(dev);
1911         u8 __iomem *base = get_hwbase(dev);
1912         u32 status;
1913
1914         if (np->msi_flags & NV_MSI_X_ENABLED)
1915                 status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
1916         else
1917                 status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
1918
1919         printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name, status);
1920
1921         {
1922                 int i;
1923
1924                 printk(KERN_INFO "%s: Ring at %lx\n",
1925                        dev->name, (unsigned long)np->ring_addr);
1926                 printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
1927                 for (i=0;i<=np->register_size;i+= 32) {
1928                         printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
1929                                         i,
1930                                         readl(base + i + 0), readl(base + i + 4),
1931                                         readl(base + i + 8), readl(base + i + 12),
1932                                         readl(base + i + 16), readl(base + i + 20),
1933                                         readl(base + i + 24), readl(base + i + 28));
1934                 }
1935                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
1936                 for (i=0;i<np->tx_ring_size;i+= 4) {
1937                         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
1938                                 printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
1939                                        i,
1940                                        le32_to_cpu(np->tx_ring.orig[i].buf),
1941                                        le32_to_cpu(np->tx_ring.orig[i].flaglen),
1942                                        le32_to_cpu(np->tx_ring.orig[i+1].buf),
1943                                        le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
1944                                        le32_to_cpu(np->tx_ring.orig[i+2].buf),
1945                                        le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
1946                                        le32_to_cpu(np->tx_ring.orig[i+3].buf),
1947                                        le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
1948                         } else {
1949                                 printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
1950                                        i,
1951                                        le32_to_cpu(np->tx_ring.ex[i].bufhigh),
1952                                        le32_to_cpu(np->tx_ring.ex[i].buflow),
1953                                        le32_to_cpu(np->tx_ring.ex[i].flaglen),
1954                                        le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
1955                                        le32_to_cpu(np->tx_ring.ex[i+1].buflow),
1956                                        le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
1957                                        le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
1958                                        le32_to_cpu(np->tx_ring.ex[i+2].buflow),
1959                                        le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
1960                                        le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
1961                                        le32_to_cpu(np->tx_ring.ex[i+3].buflow),
1962                                        le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
1963                         }
1964                 }
1965         }
1966
1967         spin_lock_irq(&np->lock);
1968
1969         /* 1) stop tx engine */
1970         nv_stop_tx(dev);
1971
1972         /* 2) check that the packets were not sent already: */
1973         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
1974                 nv_tx_done(dev);
1975         else
1976                 nv_tx_done_optimized(dev);
1977
1978         /* 3) if there are dead entries: clear everything */
1979         if (np->get_tx_ctx != np->put_tx_ctx) {
1980                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
1981                 nv_drain_tx(dev);
1982                 nv_init_tx(dev);
1983                 setup_hw_rings(dev, NV_SETUP_TX_RING);
1984                 netif_wake_queue(dev);
1985         }
1986
1987         /* 4) restart tx engine */
1988         nv_start_tx(dev);
1989         spin_unlock_irq(&np->lock);
1990 }
1991
1992 /*
1993  * Called when the nic notices a mismatch between the actual data len on the
1994  * wire and the len indicated in the 802 header
1995  */
1996 static int nv_getlen(struct net_device *dev, void *packet, int datalen)
1997 {
1998         int hdrlen;     /* length of the 802 header */
1999         int protolen;   /* length as stored in the proto field */
2000
2001         /* 1) calculate len according to header */
2002         if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2003                 protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
2004                 hdrlen = VLAN_HLEN;
2005         } else {
2006                 protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
2007                 hdrlen = ETH_HLEN;
2008         }
2009         dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
2010                                 dev->name, datalen, protolen, hdrlen);
2011         if (protolen > ETH_DATA_LEN)
2012                 return datalen; /* Value in proto field not a len, no checks possible */
2013
2014         protolen += hdrlen;
2015         /* consistency checks: */
2016         if (datalen > ETH_ZLEN) {
2017                 if (datalen >= protolen) {
2018                         /* more data on wire than in 802 header, trim of
2019                          * additional data.
2020                          */
2021                         dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2022                                         dev->name, protolen);
2023                         return protolen;
2024                 } else {
2025                         /* less data on wire than mentioned in header.
2026                          * Discard the packet.
2027                          */
2028                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
2029                                         dev->name);
2030                         return -1;
2031                 }
2032         } else {
2033                 /* short packet. Accept only if 802 values are also short */
2034                 if (protolen > ETH_ZLEN) {
2035                         dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
2036                                         dev->name);
2037                         return -1;
2038                 }
2039                 dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
2040                                 dev->name, datalen);
2041                 return datalen;
2042         }
2043 }
2044
2045 static int nv_rx_process(struct net_device *dev, int limit)
2046 {
2047         struct fe_priv *np = netdev_priv(dev);
2048         u32 flags;
2049         u32 rx_processed_cnt = 0;
2050         struct sk_buff *skb;
2051         int len;
2052
2053         while((np->get_rx.orig != np->put_rx.orig) &&
2054               !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2055                 (rx_processed_cnt++ < limit)) {
2056
2057                 dprintk(KERN_DEBUG "%s: nv_rx_process: flags 0x%x.\n",
2058                                         dev->name, flags);
2059
2060                 /*
2061                  * the packet is for us - immediately tear down the pci mapping.
2062                  * TODO: check if a prefetch of the first cacheline improves
2063                  * the performance.
2064                  */
2065                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2066                                 np->get_rx_ctx->dma_len,
2067                                 PCI_DMA_FROMDEVICE);
2068                 skb = np->get_rx_ctx->skb;
2069                 np->get_rx_ctx->skb = NULL;
2070
2071                 {
2072                         int j;
2073                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2074                         for (j=0; j<64; j++) {
2075                                 if ((j%16) == 0)
2076                                         dprintk("\n%03x:", j);
2077                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2078                         }
2079                         dprintk("\n");
2080                 }
2081                 /* look at what we actually got: */
2082                 if (np->desc_ver == DESC_VER_1) {
2083                         if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2084                                 len = flags & LEN_MASK_V1;
2085                                 if (unlikely(flags & NV_RX_ERROR)) {
2086                                         if (flags & NV_RX_ERROR4) {
2087                                                 len = nv_getlen(dev, skb->data, len);
2088                                                 if (len < 0) {
2089                                                         np->stats.rx_errors++;
2090                                                         dev_kfree_skb(skb);
2091                                                         goto next_pkt;
2092                                                 }
2093                                         }
2094                                         /* framing errors are soft errors */
2095                                         else if (flags & NV_RX_FRAMINGERR) {
2096                                                 if (flags & NV_RX_SUBSTRACT1) {
2097                                                         len--;
2098                                                 }
2099                                         }
2100                                         /* the rest are hard errors */
2101                                         else {
2102                                                 if (flags & NV_RX_MISSEDFRAME)
2103                                                         np->stats.rx_missed_errors++;
2104                                                 if (flags & NV_RX_CRCERR)
2105                                                         np->stats.rx_crc_errors++;
2106                                                 if (flags & NV_RX_OVERFLOW)
2107                                                         np->stats.rx_over_errors++;
2108                                                 np->stats.rx_errors++;
2109                                                 dev_kfree_skb(skb);
2110                                                 goto next_pkt;
2111                                         }
2112                                 }
2113                         } else {
2114                                 dev_kfree_skb(skb);
2115                                 goto next_pkt;
2116                         }
2117                 } else {
2118                         if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2119                                 len = flags & LEN_MASK_V2;
2120                                 if (unlikely(flags & NV_RX2_ERROR)) {
2121                                         if (flags & NV_RX2_ERROR4) {
2122                                                 len = nv_getlen(dev, skb->data, len);
2123                                                 if (len < 0) {
2124                                                         np->stats.rx_errors++;
2125                                                         dev_kfree_skb(skb);
2126                                                         goto next_pkt;
2127                                                 }
2128                                         }
2129                                         /* framing errors are soft errors */
2130                                         else if (flags & NV_RX2_FRAMINGERR) {
2131                                                 if (flags & NV_RX2_SUBSTRACT1) {
2132                                                         len--;
2133                                                 }
2134                                         }
2135                                         /* the rest are hard errors */
2136                                         else {
2137                                                 if (flags & NV_RX2_CRCERR)
2138                                                         np->stats.rx_crc_errors++;
2139                                                 if (flags & NV_RX2_OVERFLOW)
2140                                                         np->stats.rx_over_errors++;
2141                                                 np->stats.rx_errors++;
2142                                                 dev_kfree_skb(skb);
2143                                                 goto next_pkt;
2144                                         }
2145                                 }
2146                                 if ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK2)/*ip and tcp */ {
2147                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2148                                 } else {
2149                                         if ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK1 ||
2150                                             (flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK3) {
2151                                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2152                                         }
2153                                 }
2154                         } else {
2155                                 dev_kfree_skb(skb);
2156                                 goto next_pkt;
2157                         }
2158                 }
2159                 /* got a valid packet - forward it to the network core */
2160                 skb_put(skb, len);
2161                 skb->protocol = eth_type_trans(skb, dev);
2162                 dprintk(KERN_DEBUG "%s: nv_rx_process: %d bytes, proto %d accepted.\n",
2163                                         dev->name, len, skb->protocol);
2164 #ifdef CONFIG_FORCEDETH_NAPI
2165                 netif_receive_skb(skb);
2166 #else
2167                 netif_rx(skb);
2168 #endif
2169                 dev->last_rx = jiffies;
2170                 np->stats.rx_packets++;
2171                 np->stats.rx_bytes += len;
2172 next_pkt:
2173                 if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2174                         np->get_rx.orig = np->first_rx.orig;
2175                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2176                         np->get_rx_ctx = np->first_rx_ctx;
2177         }
2178
2179         return rx_processed_cnt;
2180 }
2181
2182 static int nv_rx_process_optimized(struct net_device *dev, int limit)
2183 {
2184         struct fe_priv *np = netdev_priv(dev);
2185         u32 flags;
2186         u32 vlanflags = 0;
2187         u32 rx_processed_cnt = 0;
2188         struct sk_buff *skb;
2189         int len;
2190
2191         while((np->get_rx.ex != np->put_rx.ex) &&
2192               !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2193               (rx_processed_cnt++ < limit)) {
2194
2195                 dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: flags 0x%x.\n",
2196                                         dev->name, flags);
2197
2198                 /*
2199                  * the packet is for us - immediately tear down the pci mapping.
2200                  * TODO: check if a prefetch of the first cacheline improves
2201                  * the performance.
2202                  */
2203                 pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2204                                 np->get_rx_ctx->dma_len,
2205                                 PCI_DMA_FROMDEVICE);
2206                 skb = np->get_rx_ctx->skb;
2207                 np->get_rx_ctx->skb = NULL;
2208
2209                 {
2210                         int j;
2211                         dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",flags);
2212                         for (j=0; j<64; j++) {
2213                                 if ((j%16) == 0)
2214                                         dprintk("\n%03x:", j);
2215                                 dprintk(" %02x", ((unsigned char*)skb->data)[j]);
2216                         }
2217                         dprintk("\n");
2218                 }
2219                 /* look at what we actually got: */
2220                 if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2221                         len = flags & LEN_MASK_V2;
2222                         if (unlikely(flags & NV_RX2_ERROR)) {
2223                                 if (flags & NV_RX2_ERROR4) {
2224                                         len = nv_getlen(dev, skb->data, len);
2225                                         if (len < 0) {
2226                                                 np->stats.rx_errors++;
2227                                                 dev_kfree_skb(skb);
2228                                                 goto next_pkt;
2229                                         }
2230                                 }
2231                                 /* framing errors are soft errors */
2232                                 else if (flags & NV_RX2_FRAMINGERR) {
2233                                         if (flags & NV_RX2_SUBSTRACT1) {
2234                                                 len--;
2235                                         }
2236                                 }
2237                                 /* the rest are hard errors */
2238                                 else {
2239                                         if (flags & NV_RX2_CRCERR)
2240                                                 np->stats.rx_crc_errors++;
2241                                         if (flags & NV_RX2_OVERFLOW)
2242                                                 np->stats.rx_over_errors++;
2243                                         np->stats.rx_errors++;
2244                                         dev_kfree_skb(skb);
2245                                         goto next_pkt;
2246                                 }
2247                         }
2248
2249                         if ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK2)/*ip and tcp */ {
2250                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2251                         } else {
2252                                 if ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK1 ||
2253                                     (flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUMOK3) {
2254                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2255                                 }
2256                         }
2257
2258                         /* got a valid packet - forward it to the network core */
2259                         skb_put(skb, len);
2260                         skb->protocol = eth_type_trans(skb, dev);
2261                         prefetch(skb->data);
2262
2263                         dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: %d bytes, proto %d accepted.\n",
2264                                 dev->name, len, skb->protocol);
2265
2266                         if (likely(!np->vlangrp)) {
2267 #ifdef CONFIG_FORCEDETH_NAPI
2268                                 netif_receive_skb(skb);
2269 #else
2270                                 netif_rx(skb);
2271 #endif
2272                         } else {
2273                                 vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2274                                 if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2275 #ifdef CONFIG_FORCEDETH_NAPI
2276                                         vlan_hwaccel_receive_skb(skb, np->vlangrp,
2277                                                                  vlanflags & NV_RX3_VLAN_TAG_MASK);
2278 #else
2279                                         vlan_hwaccel_rx(skb, np->vlangrp,
2280                                                         vlanflags & NV_RX3_VLAN_TAG_MASK);
2281 #endif
2282                                 } else {
2283 #ifdef CONFIG_FORCEDETH_NAPI
2284                                         netif_receive_skb(skb);
2285 #else
2286                                         netif_rx(skb);
2287 #endif
2288                                 }
2289                         }
2290
2291                         dev->last_rx = jiffies;
2292                         np->stats.rx_packets++;
2293                         np->stats.rx_bytes += len;
2294                 } else {
2295                         dev_kfree_skb(skb);
2296                 }
2297 next_pkt:
2298                 if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2299                         np->get_rx.ex = np->first_rx.ex;
2300                 if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2301                         np->get_rx_ctx = np->first_rx_ctx;
2302         }
2303
2304         return rx_processed_cnt;
2305 }
2306
2307 static void set_bufsize(struct net_device *dev)
2308 {
2309         struct fe_priv *np = netdev_priv(dev);
2310
2311         if (dev->mtu <= ETH_DATA_LEN)
2312                 np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2313         else
2314                 np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
2315 }
2316
2317 /*
2318  * nv_change_mtu: dev->change_mtu function
2319  * Called with dev_base_lock held for read.
2320  */
2321 static int nv_change_mtu(struct net_device *dev, int new_mtu)
2322 {
2323         struct fe_priv *np = netdev_priv(dev);
2324         int old_mtu;
2325
2326         if (new_mtu < 64 || new_mtu > np->pkt_limit)
2327                 return -EINVAL;
2328
2329         old_mtu = dev->mtu;
2330         dev->mtu = new_mtu;
2331
2332         /* return early if the buffer sizes will not change */
2333         if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
2334                 return 0;
2335         if (old_mtu == new_mtu)
2336                 return 0;
2337
2338         /* synchronized against open : rtnl_lock() held by caller */
2339         if (netif_running(dev)) {
2340                 u8 __iomem *base = get_hwbase(dev);
2341                 /*
2342                  * It seems that the nic preloads valid ring entries into an
2343                  * internal buffer. The procedure for flushing everything is
2344                  * guessed, there is probably a simpler approach.
2345                  * Changing the MTU is a rare event, it shouldn't matter.
2346                  */
2347                 nv_disable_irq(dev);
2348                 netif_tx_lock_bh(dev);
2349                 spin_lock(&np->lock);
2350                 /* stop engines */
2351                 nv_stop_rx(dev);
2352                 nv_stop_tx(dev);
2353                 nv_txrx_reset(dev);
2354                 /* drain rx queue */
2355                 nv_drain_rx(dev);
2356                 nv_drain_tx(dev);
2357                 /* reinit driver view of the rx queue */
2358                 set_bufsize(dev);
2359                 if (nv_init_ring(dev)) {
2360                         if (!np->in_shutdown)
2361                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2362                 }
2363                 /* reinit nic view of the rx queue */
2364                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
2365                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
2366                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
2367                         base + NvRegRingSizes);
2368                 pci_push(base);
2369                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2370                 pci_push(base);
2371
2372                 /* restart rx engine */
2373                 nv_start_rx(dev);
2374                 nv_start_tx(dev);
2375                 spin_unlock(&np->lock);
2376                 netif_tx_unlock_bh(dev);
2377                 nv_enable_irq(dev);
2378         }
2379         return 0;
2380 }
2381
2382 static void nv_copy_mac_to_hw(struct net_device *dev)
2383 {
2384         u8 __iomem *base = get_hwbase(dev);
2385         u32 mac[2];
2386
2387         mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
2388                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
2389         mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
2390
2391         writel(mac[0], base + NvRegMacAddrA);
2392         writel(mac[1], base + NvRegMacAddrB);
2393 }
2394
2395 /*
2396  * nv_set_mac_address: dev->set_mac_address function
2397  * Called with rtnl_lock() held.
2398  */
2399 static int nv_set_mac_address(struct net_device *dev, void *addr)
2400 {
2401         struct fe_priv *np = netdev_priv(dev);
2402         struct sockaddr *macaddr = (struct sockaddr*)addr;
2403
2404         if (!is_valid_ether_addr(macaddr->sa_data))
2405                 return -EADDRNOTAVAIL;
2406
2407         /* synchronized against open : rtnl_lock() held by caller */
2408         memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
2409
2410         if (netif_running(dev)) {
2411                 netif_tx_lock_bh(dev);
2412                 spin_lock_irq(&np->lock);
2413
2414                 /* stop rx engine */
2415                 nv_stop_rx(dev);
2416
2417                 /* set mac address */
2418                 nv_copy_mac_to_hw(dev);
2419
2420                 /* restart rx engine */
2421                 nv_start_rx(dev);
2422                 spin_unlock_irq(&np->lock);
2423                 netif_tx_unlock_bh(dev);
2424         } else {
2425                 nv_copy_mac_to_hw(dev);
2426         }
2427         return 0;
2428 }
2429
2430 /*
2431  * nv_set_multicast: dev->set_multicast function
2432  * Called with netif_tx_lock held.
2433  */
2434 static void nv_set_multicast(struct net_device *dev)
2435 {
2436         struct fe_priv *np = netdev_priv(dev);
2437         u8 __iomem *base = get_hwbase(dev);
2438         u32 addr[2];
2439         u32 mask[2];
2440         u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
2441
2442         memset(addr, 0, sizeof(addr));
2443         memset(mask, 0, sizeof(mask));
2444
2445         if (dev->flags & IFF_PROMISC) {
2446                 pff |= NVREG_PFF_PROMISC;
2447         } else {
2448                 pff |= NVREG_PFF_MYADDR;
2449
2450                 if (dev->flags & IFF_ALLMULTI || dev->mc_list) {
2451                         u32 alwaysOff[2];
2452                         u32 alwaysOn[2];
2453
2454                         alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
2455                         if (dev->flags & IFF_ALLMULTI) {
2456                                 alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
2457                         } else {
2458                                 struct dev_mc_list *walk;
2459
2460                                 walk = dev->mc_list;
2461                                 while (walk != NULL) {
2462                                         u32 a, b;
2463                                         a = le32_to_cpu(*(u32 *) walk->dmi_addr);
2464                                         b = le16_to_cpu(*(u16 *) (&walk->dmi_addr[4]));
2465                                         alwaysOn[0] &= a;
2466                                         alwaysOff[0] &= ~a;
2467                                         alwaysOn[1] &= b;
2468                                         alwaysOff[1] &= ~b;
2469                                         walk = walk->next;
2470                                 }
2471                         }
2472                         addr[0] = alwaysOn[0];
2473                         addr[1] = alwaysOn[1];
2474                         mask[0] = alwaysOn[0] | alwaysOff[0];
2475                         mask[1] = alwaysOn[1] | alwaysOff[1];
2476                 }
2477         }
2478         addr[0] |= NVREG_MCASTADDRA_FORCE;
2479         pff |= NVREG_PFF_ALWAYS;
2480         spin_lock_irq(&np->lock);
2481         nv_stop_rx(dev);
2482         writel(addr[0], base + NvRegMulticastAddrA);
2483         writel(addr[1], base + NvRegMulticastAddrB);
2484         writel(mask[0], base + NvRegMulticastMaskA);
2485         writel(mask[1], base + NvRegMulticastMaskB);
2486         writel(pff, base + NvRegPacketFilterFlags);
2487         dprintk(KERN_INFO "%s: reconfiguration for multicast lists.\n",
2488                 dev->name);
2489         nv_start_rx(dev);
2490         spin_unlock_irq(&np->lock);
2491 }
2492
2493 static void nv_update_pause(struct net_device *dev, u32 pause_flags)
2494 {
2495         struct fe_priv *np = netdev_priv(dev);
2496         u8 __iomem *base = get_hwbase(dev);
2497
2498         np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
2499
2500         if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
2501                 u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
2502                 if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
2503                         writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
2504                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2505                 } else {
2506                         writel(pff, base + NvRegPacketFilterFlags);
2507                 }
2508         }
2509         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
2510                 u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
2511                 if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
2512                         writel(NVREG_TX_PAUSEFRAME_ENABLE,  base + NvRegTxPauseFrame);
2513                         writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
2514                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2515                 } else {
2516                         writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
2517                         writel(regmisc, base + NvRegMisc1);
2518                 }
2519         }
2520 }
2521
2522 /**
2523  * nv_update_linkspeed: Setup the MAC according to the link partner
2524  * @dev: Network device to be configured
2525  *
2526  * The function queries the PHY and checks if there is a link partner.
2527  * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
2528  * set to 10 MBit HD.
2529  *
2530  * The function returns 0 if there is no link partner and 1 if there is
2531  * a good link partner.
2532  */
2533 static int nv_update_linkspeed(struct net_device *dev)
2534 {
2535         struct fe_priv *np = netdev_priv(dev);
2536         u8 __iomem *base = get_hwbase(dev);
2537         int adv = 0;
2538         int lpa = 0;
2539         int adv_lpa, adv_pause, lpa_pause;
2540         int newls = np->linkspeed;
2541         int newdup = np->duplex;
2542         int mii_status;
2543         int retval = 0;
2544         u32 control_1000, status_1000, phyreg, pause_flags, txreg;
2545
2546         /* BMSR_LSTATUS is latched, read it twice:
2547          * we want the current value.
2548          */
2549         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2550         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
2551
2552         if (!(mii_status & BMSR_LSTATUS)) {
2553                 dprintk(KERN_DEBUG "%s: no link detected by phy - falling back to 10HD.\n",
2554                                 dev->name);
2555                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2556                 newdup = 0;
2557                 retval = 0;
2558                 goto set_speed;
2559         }
2560
2561         if (np->autoneg == 0) {
2562                 dprintk(KERN_DEBUG "%s: nv_update_linkspeed: autoneg off, PHY set to 0x%04x.\n",
2563                                 dev->name, np->fixed_mode);
2564                 if (np->fixed_mode & LPA_100FULL) {
2565                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2566                         newdup = 1;
2567                 } else if (np->fixed_mode & LPA_100HALF) {
2568                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2569                         newdup = 0;
2570                 } else if (np->fixed_mode & LPA_10FULL) {
2571                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2572                         newdup = 1;
2573                 } else {
2574                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2575                         newdup = 0;
2576                 }
2577                 retval = 1;
2578                 goto set_speed;
2579         }
2580         /* check auto negotiation is complete */
2581         if (!(mii_status & BMSR_ANEGCOMPLETE)) {
2582                 /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
2583                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2584                 newdup = 0;
2585                 retval = 0;
2586                 dprintk(KERN_DEBUG "%s: autoneg not completed - falling back to 10HD.\n", dev->name);
2587                 goto set_speed;
2588         }
2589
2590         adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
2591         lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
2592         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n",
2593                                 dev->name, adv, lpa);
2594
2595         retval = 1;
2596         if (np->gigabit == PHY_GIGABIT) {
2597                 control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
2598                 status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
2599
2600                 if ((control_1000 & ADVERTISE_1000FULL) &&
2601                         (status_1000 & LPA_1000FULL)) {
2602                         dprintk(KERN_DEBUG "%s: nv_update_linkspeed: GBit ethernet detected.\n",
2603                                 dev->name);
2604                         newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
2605                         newdup = 1;
2606                         goto set_speed;
2607                 }
2608         }
2609
2610         /* FIXME: handle parallel detection properly */
2611         adv_lpa = lpa & adv;
2612         if (adv_lpa & LPA_100FULL) {
2613                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2614                 newdup = 1;
2615         } else if (adv_lpa & LPA_100HALF) {
2616                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
2617                 newdup = 0;
2618         } else if (adv_lpa & LPA_10FULL) {
2619                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2620                 newdup = 1;
2621         } else if (adv_lpa & LPA_10HALF) {
2622                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2623                 newdup = 0;
2624         } else {
2625                 dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, adv_lpa);
2626                 newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
2627                 newdup = 0;
2628         }
2629
2630 set_speed:
2631         if (np->duplex == newdup && np->linkspeed == newls)
2632                 return retval;
2633
2634         dprintk(KERN_INFO "%s: changing link setting from %d/%d to %d/%d.\n",
2635                         dev->name, np->linkspeed, np->duplex, newls, newdup);
2636
2637         np->duplex = newdup;
2638         np->linkspeed = newls;
2639
2640         if (np->gigabit == PHY_GIGABIT) {
2641                 phyreg = readl(base + NvRegRandomSeed);
2642                 phyreg &= ~(0x3FF00);
2643                 if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
2644                         phyreg |= NVREG_RNDSEED_FORCE3;
2645                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
2646                         phyreg |= NVREG_RNDSEED_FORCE2;
2647                 else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
2648                         phyreg |= NVREG_RNDSEED_FORCE;
2649                 writel(phyreg, base + NvRegRandomSeed);
2650         }
2651
2652         phyreg = readl(base + NvRegPhyInterface);
2653         phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
2654         if (np->duplex == 0)
2655                 phyreg |= PHY_HALF;
2656         if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
2657                 phyreg |= PHY_100;
2658         else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2659                 phyreg |= PHY_1000;
2660         writel(phyreg, base + NvRegPhyInterface);
2661
2662         if (phyreg & PHY_RGMII) {
2663                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2664                         txreg = NVREG_TX_DEFERRAL_RGMII_1000;
2665                 else
2666                         txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
2667         } else {
2668                 txreg = NVREG_TX_DEFERRAL_DEFAULT;
2669         }
2670         writel(txreg, base + NvRegTxDeferral);
2671
2672         if (np->desc_ver == DESC_VER_1) {
2673                 txreg = NVREG_TX_WM_DESC1_DEFAULT;
2674         } else {
2675                 if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
2676                         txreg = NVREG_TX_WM_DESC2_3_1000;
2677                 else
2678                         txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
2679         }
2680         writel(txreg, base + NvRegTxWatermark);
2681
2682         writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD),
2683                 base + NvRegMisc1);
2684         pci_push(base);
2685         writel(np->linkspeed, base + NvRegLinkSpeed);
2686         pci_push(base);
2687
2688         pause_flags = 0;
2689         /* setup pause frame */
2690         if (np->duplex != 0) {
2691                 if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
2692                         adv_pause = adv & (ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM);
2693                         lpa_pause = lpa & (LPA_PAUSE_CAP| LPA_PAUSE_ASYM);
2694
2695                         switch (adv_pause) {
2696                         case ADVERTISE_PAUSE_CAP:
2697                                 if (lpa_pause & LPA_PAUSE_CAP) {
2698                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2699                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2700                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2701                                 }
2702                                 break;
2703                         case ADVERTISE_PAUSE_ASYM:
2704                                 if (lpa_pause == (LPA_PAUSE_CAP| LPA_PAUSE_ASYM))
2705                                 {
2706                                         pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2707                                 }
2708                                 break;
2709                         case ADVERTISE_PAUSE_CAP| ADVERTISE_PAUSE_ASYM:
2710                                 if (lpa_pause & LPA_PAUSE_CAP)
2711                                 {
2712                                         pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
2713                                         if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
2714                                                 pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
2715                                 }
2716                                 if (lpa_pause == LPA_PAUSE_ASYM)
2717                                 {
2718                                         pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
2719                                 }
2720                                 break;
2721                         }
2722                 } else {
2723                         pause_flags = np->pause_flags;
2724                 }
2725         }
2726         nv_update_pause(dev, pause_flags);
2727
2728         return retval;
2729 }
2730
2731 static void nv_linkchange(struct net_device *dev)
2732 {
2733         if (nv_update_linkspeed(dev)) {
2734                 if (!netif_carrier_ok(dev)) {
2735                         netif_carrier_on(dev);
2736                         printk(KERN_INFO "%s: link up.\n", dev->name);
2737                         nv_start_rx(dev);
2738                 }
2739         } else {
2740                 if (netif_carrier_ok(dev)) {
2741                         netif_carrier_off(dev);
2742                         printk(KERN_INFO "%s: link down.\n", dev->name);
2743                         nv_stop_rx(dev);
2744                 }
2745         }
2746 }
2747
2748 static void nv_link_irq(struct net_device *dev)
2749 {
2750         u8 __iomem *base = get_hwbase(dev);
2751         u32 miistat;
2752
2753         miistat = readl(base + NvRegMIIStatus);
2754         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
2755         dprintk(KERN_INFO "%s: link change irq, status 0x%x.\n", dev->name, miistat);
2756
2757         if (miistat & (NVREG_MIISTAT_LINKCHANGE))
2758                 nv_linkchange(dev);
2759         dprintk(KERN_DEBUG "%s: link change notification done.\n", dev->name);
2760 }
2761
2762 static irqreturn_t nv_nic_irq(int foo, void *data)
2763 {
2764         struct net_device *dev = (struct net_device *) data;
2765         struct fe_priv *np = netdev_priv(dev);
2766         u8 __iomem *base = get_hwbase(dev);
2767         u32 events;
2768         int i;
2769
2770         dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
2771
2772         for (i=0; ; i++) {
2773                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
2774                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2775                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2776                 } else {
2777                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2778                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
2779                 }
2780                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2781                 if (!(events & np->irqmask))
2782                         break;
2783
2784                 spin_lock(&np->lock);
2785                 nv_tx_done(dev);
2786                 spin_unlock(&np->lock);
2787
2788 #ifdef CONFIG_FORCEDETH_NAPI
2789                 if (events & NVREG_IRQ_RX_ALL) {
2790                         netif_rx_schedule(dev);
2791
2792                         /* Disable furthur receive irq's */
2793                         spin_lock(&np->lock);
2794                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
2795
2796                         if (np->msi_flags & NV_MSI_X_ENABLED)
2797                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2798                         else
2799                                 writel(np->irqmask, base + NvRegIrqMask);
2800                         spin_unlock(&np->lock);
2801                 }
2802 #else
2803                 if (nv_rx_process(dev, dev->weight)) {
2804                         if (unlikely(nv_alloc_rx(dev))) {
2805                                 spin_lock(&np->lock);
2806                                 if (!np->in_shutdown)
2807                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2808                                 spin_unlock(&np->lock);
2809                         }
2810                 }
2811 #endif
2812                 if (unlikely(events & NVREG_IRQ_LINK)) {
2813                         spin_lock(&np->lock);
2814                         nv_link_irq(dev);
2815                         spin_unlock(&np->lock);
2816                 }
2817                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
2818                         spin_lock(&np->lock);
2819                         nv_linkchange(dev);
2820                         spin_unlock(&np->lock);
2821                         np->link_timeout = jiffies + LINK_TIMEOUT;
2822                 }
2823                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
2824                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2825                                                 dev->name, events);
2826                 }
2827                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
2828                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2829                                                 dev->name, events);
2830                 }
2831                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
2832                         spin_lock(&np->lock);
2833                         /* disable interrupts on the nic */
2834                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2835                                 writel(0, base + NvRegIrqMask);
2836                         else
2837                                 writel(np->irqmask, base + NvRegIrqMask);
2838                         pci_push(base);
2839
2840                         if (!np->in_shutdown) {
2841                                 np->nic_poll_irq = np->irqmask;
2842                                 np->recover_error = 1;
2843                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2844                         }
2845                         spin_unlock(&np->lock);
2846                         break;
2847                 }
2848                 if (unlikely(i > max_interrupt_work)) {
2849                         spin_lock(&np->lock);
2850                         /* disable interrupts on the nic */
2851                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2852                                 writel(0, base + NvRegIrqMask);
2853                         else
2854                                 writel(np->irqmask, base + NvRegIrqMask);
2855                         pci_push(base);
2856
2857                         if (!np->in_shutdown) {
2858                                 np->nic_poll_irq = np->irqmask;
2859                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2860                         }
2861                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
2862                         spin_unlock(&np->lock);
2863                         break;
2864                 }
2865
2866         }
2867         dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
2868
2869         return IRQ_RETVAL(i);
2870 }
2871
2872 #define TX_WORK_PER_LOOP  64
2873 #define RX_WORK_PER_LOOP  64
2874 /**
2875  * All _optimized functions are used to help increase performance
2876  * (reduce CPU and increase throughput). They use descripter version 3,
2877  * compiler directives, and reduce memory accesses.
2878  */
2879 static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
2880 {
2881         struct net_device *dev = (struct net_device *) data;
2882         struct fe_priv *np = netdev_priv(dev);
2883         u8 __iomem *base = get_hwbase(dev);
2884         u32 events;
2885         int i;
2886
2887         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
2888
2889         for (i=0; ; i++) {
2890                 if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
2891                         events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2892                         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
2893                 } else {
2894                         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2895                         writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
2896                 }
2897                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
2898                 if (!(events & np->irqmask))
2899                         break;
2900
2901                 spin_lock(&np->lock);
2902                 nv_tx_done_optimized(dev);
2903                 spin_unlock(&np->lock);
2904
2905 #ifdef CONFIG_FORCEDETH_NAPI
2906                 if (events & NVREG_IRQ_RX_ALL) {
2907                         netif_rx_schedule(dev);
2908
2909                         /* Disable furthur receive irq's */
2910                         spin_lock(&np->lock);
2911                         np->irqmask &= ~NVREG_IRQ_RX_ALL;
2912
2913                         if (np->msi_flags & NV_MSI_X_ENABLED)
2914                                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
2915                         else
2916                                 writel(np->irqmask, base + NvRegIrqMask);
2917                         spin_unlock(&np->lock);
2918                 }
2919 #else
2920                 if (nv_rx_process_optimized(dev, dev->weight)) {
2921                         if (unlikely(nv_alloc_rx_optimized(dev))) {
2922                                 spin_lock(&np->lock);
2923                                 if (!np->in_shutdown)
2924                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
2925                                 spin_unlock(&np->lock);
2926                         }
2927                 }
2928 #endif
2929                 if (unlikely(events & NVREG_IRQ_LINK)) {
2930                         spin_lock(&np->lock);
2931                         nv_link_irq(dev);
2932                         spin_unlock(&np->lock);
2933                 }
2934                 if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
2935                         spin_lock(&np->lock);
2936                         nv_linkchange(dev);
2937                         spin_unlock(&np->lock);
2938                         np->link_timeout = jiffies + LINK_TIMEOUT;
2939                 }
2940                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
2941                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
2942                                                 dev->name, events);
2943                 }
2944                 if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
2945                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
2946                                                 dev->name, events);
2947                 }
2948                 if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
2949                         spin_lock(&np->lock);
2950                         /* disable interrupts on the nic */
2951                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2952                                 writel(0, base + NvRegIrqMask);
2953                         else
2954                                 writel(np->irqmask, base + NvRegIrqMask);
2955                         pci_push(base);
2956
2957                         if (!np->in_shutdown) {
2958                                 np->nic_poll_irq = np->irqmask;
2959                                 np->recover_error = 1;
2960                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2961                         }
2962                         spin_unlock(&np->lock);
2963                         break;
2964                 }
2965
2966                 if (unlikely(i > max_interrupt_work)) {
2967                         spin_lock(&np->lock);
2968                         /* disable interrupts on the nic */
2969                         if (!(np->msi_flags & NV_MSI_X_ENABLED))
2970                                 writel(0, base + NvRegIrqMask);
2971                         else
2972                                 writel(np->irqmask, base + NvRegIrqMask);
2973                         pci_push(base);
2974
2975                         if (!np->in_shutdown) {
2976                                 np->nic_poll_irq = np->irqmask;
2977                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
2978                         }
2979                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
2980                         spin_unlock(&np->lock);
2981                         break;
2982                 }
2983
2984         }
2985         dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name);
2986
2987         return IRQ_RETVAL(i);
2988 }
2989
2990 static irqreturn_t nv_nic_irq_tx(int foo, void *data)
2991 {
2992         struct net_device *dev = (struct net_device *) data;
2993         struct fe_priv *np = netdev_priv(dev);
2994         u8 __iomem *base = get_hwbase(dev);
2995         u32 events;
2996         int i;
2997         unsigned long flags;
2998
2999         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx\n", dev->name);
3000
3001         for (i=0; ; i++) {
3002                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3003                 writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
3004                 dprintk(KERN_DEBUG "%s: tx irq: %08x\n", dev->name, events);
3005                 if (!(events & np->irqmask))
3006                         break;
3007
3008                 spin_lock_irqsave(&np->lock, flags);
3009                 nv_tx_done_optimized(dev);
3010                 spin_unlock_irqrestore(&np->lock, flags);
3011
3012                 if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
3013                         dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
3014                                                 dev->name, events);
3015                 }
3016                 if (unlikely(i > max_interrupt_work)) {
3017                         spin_lock_irqsave(&np->lock, flags);
3018                         /* disable interrupts on the nic */
3019                         writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3020                         pci_push(base);
3021
3022                         if (!np->in_shutdown) {
3023                                 np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3024                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3025                         }
3026                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_tx.\n", dev->name, i);
3027                         spin_unlock_irqrestore(&np->lock, flags);
3028                         break;
3029                 }
3030
3031         }
3032         dprintk(KERN_DEBUG "%s: nv_nic_irq_tx completed\n", dev->name);
3033
3034         return IRQ_RETVAL(i);
3035 }
3036
3037 #ifdef CONFIG_FORCEDETH_NAPI
3038 static int nv_napi_poll(struct net_device *dev, int *budget)
3039 {
3040         int pkts, limit = min(*budget, dev->quota);
3041         struct fe_priv *np = netdev_priv(dev);
3042         u8 __iomem *base = get_hwbase(dev);
3043         unsigned long flags;
3044
3045         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
3046                 pkts = nv_rx_process(dev, limit);
3047         else
3048                 pkts = nv_rx_process_optimized(dev, limit);
3049
3050         if (nv_alloc_rx(dev)) {
3051                 spin_lock_irqsave(&np->lock, flags);
3052                 if (!np->in_shutdown)
3053                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3054                 spin_unlock_irqrestore(&np->lock, flags);
3055         }
3056
3057         if (pkts < limit) {
3058                 /* all done, no more packets present */
3059                 netif_rx_complete(dev);
3060
3061                 /* re-enable receive interrupts */
3062                 spin_lock_irqsave(&np->lock, flags);
3063
3064                 np->irqmask |= NVREG_IRQ_RX_ALL;
3065                 if (np->msi_flags & NV_MSI_X_ENABLED)
3066                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3067                 else
3068                         writel(np->irqmask, base + NvRegIrqMask);
3069
3070                 spin_unlock_irqrestore(&np->lock, flags);
3071                 return 0;
3072         } else {
3073                 /* used up our quantum, so reschedule */
3074                 dev->quota -= pkts;
3075                 *budget -= pkts;
3076                 return 1;
3077         }
3078 }
3079 #endif
3080
3081 #ifdef CONFIG_FORCEDETH_NAPI
3082 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3083 {
3084         struct net_device *dev = (struct net_device *) data;
3085         u8 __iomem *base = get_hwbase(dev);
3086         u32 events;
3087
3088         events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3089         writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3090
3091         if (events) {
3092                 netif_rx_schedule(dev);
3093                 /* disable receive interrupts on the nic */
3094                 writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3095                 pci_push(base);
3096         }
3097         return IRQ_HANDLED;
3098 }
3099 #else
3100 static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3101 {
3102         struct net_device *dev = (struct net_device *) data;
3103         struct fe_priv *np = netdev_priv(dev);
3104         u8 __iomem *base = get_hwbase(dev);
3105         u32 events;
3106         int i;
3107         unsigned long flags;
3108
3109         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx\n", dev->name);
3110
3111         for (i=0; ; i++) {
3112                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3113                 writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
3114                 dprintk(KERN_DEBUG "%s: rx irq: %08x\n", dev->name, events);
3115                 if (!(events & np->irqmask))
3116                         break;
3117
3118                 if (nv_rx_process_optimized(dev, dev->weight)) {
3119                         if (unlikely(nv_alloc_rx_optimized(dev))) {
3120                                 spin_lock_irqsave(&np->lock, flags);
3121                                 if (!np->in_shutdown)
3122                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3123                                 spin_unlock_irqrestore(&np->lock, flags);
3124                         }
3125                 }
3126
3127                 if (unlikely(i > max_interrupt_work)) {
3128                         spin_lock_irqsave(&np->lock, flags);
3129                         /* disable interrupts on the nic */
3130                         writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3131                         pci_push(base);
3132
3133                         if (!np->in_shutdown) {
3134                                 np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3135                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3136                         }
3137                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_rx.\n", dev->name, i);
3138                         spin_unlock_irqrestore(&np->lock, flags);
3139                         break;
3140                 }
3141         }
3142         dprintk(KERN_DEBUG "%s: nv_nic_irq_rx completed\n", dev->name);
3143
3144         return IRQ_RETVAL(i);
3145 }
3146 #endif
3147
3148 static irqreturn_t nv_nic_irq_other(int foo, void *data)
3149 {
3150         struct net_device *dev = (struct net_device *) data;
3151         struct fe_priv *np = netdev_priv(dev);
3152         u8 __iomem *base = get_hwbase(dev);
3153         u32 events;
3154         int i;
3155         unsigned long flags;
3156
3157         dprintk(KERN_DEBUG "%s: nv_nic_irq_other\n", dev->name);
3158
3159         for (i=0; ; i++) {
3160                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3161                 writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
3162                 dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3163                 if (!(events & np->irqmask))
3164                         break;
3165
3166                 if (events & NVREG_IRQ_LINK) {
3167                         spin_lock_irqsave(&np->lock, flags);
3168                         nv_link_irq(dev);
3169                         spin_unlock_irqrestore(&np->lock, flags);
3170                 }
3171                 if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3172                         spin_lock_irqsave(&np->lock, flags);
3173                         nv_linkchange(dev);
3174                         spin_unlock_irqrestore(&np->lock, flags);
3175                         np->link_timeout = jiffies + LINK_TIMEOUT;
3176                 }
3177                 if (events & NVREG_IRQ_RECOVER_ERROR) {
3178                         spin_lock_irq(&np->lock);
3179                         /* disable interrupts on the nic */
3180                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3181                         pci_push(base);
3182
3183                         if (!np->in_shutdown) {
3184                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3185                                 np->recover_error = 1;
3186                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3187                         }
3188                         spin_unlock_irq(&np->lock);
3189                         break;
3190                 }
3191                 if (events & (NVREG_IRQ_UNKNOWN)) {
3192                         printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
3193                                                 dev->name, events);
3194                 }
3195                 if (unlikely(i > max_interrupt_work)) {
3196                         spin_lock_irqsave(&np->lock, flags);
3197                         /* disable interrupts on the nic */
3198                         writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3199                         pci_push(base);
3200
3201                         if (!np->in_shutdown) {
3202                                 np->nic_poll_irq |= NVREG_IRQ_OTHER;
3203                                 mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3204                         }
3205                         printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq_other.\n", dev->name, i);
3206                         spin_unlock_irqrestore(&np->lock, flags);
3207                         break;
3208                 }
3209
3210         }
3211         dprintk(KERN_DEBUG "%s: nv_nic_irq_other completed\n", dev->name);
3212
3213         return IRQ_RETVAL(i);
3214 }
3215
3216 static irqreturn_t nv_nic_irq_test(int foo, void *data)
3217 {
3218         struct net_device *dev = (struct net_device *) data;
3219         struct fe_priv *np = netdev_priv(dev);
3220         u8 __iomem *base = get_hwbase(dev);
3221         u32 events;
3222
3223         dprintk(KERN_DEBUG "%s: nv_nic_irq_test\n", dev->name);
3224
3225         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3226                 events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3227                 writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3228         } else {
3229                 events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3230                 writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3231         }
3232         pci_push(base);
3233         dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
3234         if (!(events & NVREG_IRQ_TIMER))
3235                 return IRQ_RETVAL(0);
3236
3237         spin_lock(&np->lock);
3238         np->intr_test = 1;
3239         spin_unlock(&np->lock);
3240
3241         dprintk(KERN_DEBUG "%s: nv_nic_irq_test completed\n", dev->name);
3242
3243         return IRQ_RETVAL(1);
3244 }
3245
3246 static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3247 {
3248         u8 __iomem *base = get_hwbase(dev);
3249         int i;
3250         u32 msixmap = 0;
3251
3252         /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3253          * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3254          * the remaining 8 interrupts.
3255          */
3256         for (i = 0; i < 8; i++) {
3257                 if ((irqmask >> i) & 0x1) {
3258                         msixmap |= vector << (i << 2);
3259                 }
3260         }
3261         writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3262
3263         msixmap = 0;
3264         for (i = 0; i < 8; i++) {
3265                 if ((irqmask >> (i + 8)) & 0x1) {
3266                         msixmap |= vector << (i << 2);
3267                 }
3268         }
3269         writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3270 }
3271
3272 static int nv_request_irq(struct net_device *dev, int intr_test)
3273 {
3274         struct fe_priv *np = get_nvpriv(dev);
3275         u8 __iomem *base = get_hwbase(dev);
3276         int ret = 1;
3277         int i;
3278         irqreturn_t (*handler)(int foo, void *data);
3279
3280         if (intr_test) {
3281                 handler = nv_nic_irq_test;
3282         } else {
3283                 if (np->desc_ver == DESC_VER_3)
3284                         handler = nv_nic_irq_optimized;
3285                 else
3286                         handler = nv_nic_irq;
3287         }
3288
3289         if (np->msi_flags & NV_MSI_X_CAPABLE) {
3290                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3291                         np->msi_x_entry[i].entry = i;
3292                 }
3293                 if ((ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK))) == 0) {
3294                         np->msi_flags |= NV_MSI_X_ENABLED;
3295                         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3296                                 /* Request irq for rx handling */
3297                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, &nv_nic_irq_rx, IRQF_SHARED, dev->name, dev) != 0) {
3298                                         printk(KERN_INFO "forcedeth: request_irq failed for rx %d\n", ret);
3299                                         pci_disable_msix(np->pci_dev);
3300                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3301                                         goto out_err;
3302                                 }
3303                                 /* Request irq for tx handling */
3304                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, &nv_nic_irq_tx, IRQF_SHARED, dev->name, dev) != 0) {
3305                                         printk(KERN_INFO "forcedeth: request_irq failed for tx %d\n", ret);
3306                                         pci_disable_msix(np->pci_dev);
3307                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3308                                         goto out_free_rx;
3309                                 }
3310                                 /* Request irq for link and timer handling */
3311                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector, &nv_nic_irq_other, IRQF_SHARED, dev->name, dev) != 0) {
3312                                         printk(KERN_INFO "forcedeth: request_irq failed for link %d\n", ret);
3313                                         pci_disable_msix(np->pci_dev);
3314                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3315                                         goto out_free_tx;
3316                                 }
3317                                 /* map interrupts to their respective vector */
3318                                 writel(0, base + NvRegMSIXMap0);
3319                                 writel(0, base + NvRegMSIXMap1);
3320                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3321                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3322                                 set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3323                         } else {
3324                                 /* Request irq for all interrupts */
3325                                 if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
3326                                         printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3327                                         pci_disable_msix(np->pci_dev);
3328                                         np->msi_flags &= ~NV_MSI_X_ENABLED;
3329                                         goto out_err;
3330                                 }
3331
3332                                 /* map interrupts to vector 0 */
3333                                 writel(0, base + NvRegMSIXMap0);
3334                                 writel(0, base + NvRegMSIXMap1);
3335                         }
3336                 }
3337         }
3338         if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
3339                 if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
3340                         np->msi_flags |= NV_MSI_ENABLED;
3341                         if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
3342                                 printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
3343                                 pci_disable_msi(np->pci_dev);
3344                                 np->msi_flags &= ~NV_MSI_ENABLED;
3345                                 goto out_err;
3346                         }
3347
3348                         /* map interrupts to vector 0 */
3349                         writel(0, base + NvRegMSIMap0);
3350                         writel(0, base + NvRegMSIMap1);
3351                         /* enable msi vector 0 */
3352                         writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3353                 }
3354         }
3355         if (ret != 0) {
3356                 if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
3357                         goto out_err;
3358
3359         }
3360
3361         return 0;
3362 out_free_tx:
3363         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
3364 out_free_rx:
3365         free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
3366 out_err:
3367         return 1;
3368 }
3369
3370 static void nv_free_irq(struct net_device *dev)
3371 {
3372         struct fe_priv *np = get_nvpriv(dev);
3373         int i;
3374
3375         if (np->msi_flags & NV_MSI_X_ENABLED) {
3376                 for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++) {
3377                         free_irq(np->msi_x_entry[i].vector, dev);
3378                 }
3379                 pci_disable_msix(np->pci_dev);
3380                 np->msi_flags &= ~NV_MSI_X_ENABLED;
3381         } else {
3382                 free_irq(np->pci_dev->irq, dev);
3383                 if (np->msi_flags & NV_MSI_ENABLED) {
3384                         pci_disable_msi(np->pci_dev);
3385                         np->msi_flags &= ~NV_MSI_ENABLED;
3386                 }
3387         }
3388 }
3389
3390 static void nv_do_nic_poll(unsigned long data)
3391 {
3392         struct net_device *dev = (struct net_device *) data;
3393         struct fe_priv *np = netdev_priv(dev);
3394         u8 __iomem *base = get_hwbase(dev);
3395         u32 mask = 0;
3396
3397         /*
3398          * First disable irq(s) and then
3399          * reenable interrupts on the nic, we have to do this before calling
3400          * nv_nic_irq because that may decide to do otherwise
3401          */
3402
3403         if (!using_multi_irqs(dev)) {
3404                 if (np->msi_flags & NV_MSI_X_ENABLED)
3405                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
3406                 else
3407                         disable_irq_lockdep(dev->irq);
3408                 mask = np->irqmask;
3409         } else {
3410                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3411                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3412                         mask |= NVREG_IRQ_RX_ALL;
3413                 }
3414                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3415                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3416                         mask |= NVREG_IRQ_TX_ALL;
3417                 }
3418                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3419                         disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3420                         mask |= NVREG_IRQ_OTHER;
3421                 }
3422         }
3423         np->nic_poll_irq = 0;
3424
3425         if (np->recover_error) {
3426                 np->recover_error = 0;
3427                 printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
3428                 if (netif_running(dev)) {
3429                         netif_tx_lock_bh(dev);
3430                         spin_lock(&np->lock);
3431                         /* stop engines */
3432                         nv_stop_rx(dev);
3433                         nv_stop_tx(dev);
3434                         nv_txrx_reset(dev);
3435                         /* drain rx queue */
3436                         nv_drain_rx(dev);
3437                         nv_drain_tx(dev);
3438                         /* reinit driver view of the rx queue */
3439                         set_bufsize(dev);
3440                         if (nv_init_ring(dev)) {
3441                                 if (!np->in_shutdown)
3442                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3443                         }
3444                         /* reinit nic view of the rx queue */
3445                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3446                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3447                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3448                                 base + NvRegRingSizes);
3449                         pci_push(base);
3450                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3451                         pci_push(base);
3452
3453                         /* restart rx engine */
3454                         nv_start_rx(dev);
3455                         nv_start_tx(dev);
3456                         spin_unlock(&np->lock);
3457                         netif_tx_unlock_bh(dev);
3458                 }
3459         }
3460
3461         /* FIXME: Do we need synchronize_irq(dev->irq) here? */
3462
3463         writel(mask, base + NvRegIrqMask);
3464         pci_push(base);
3465
3466         if (!using_multi_irqs(dev)) {
3467                 nv_nic_irq(0, dev);
3468                 if (np->msi_flags & NV_MSI_X_ENABLED)
3469                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
3470                 else
3471                         enable_irq_lockdep(dev->irq);
3472         } else {
3473                 if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
3474                         nv_nic_irq_rx(0, dev);
3475                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
3476                 }
3477                 if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
3478                         nv_nic_irq_tx(0, dev);
3479                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
3480                 }
3481                 if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
3482                         nv_nic_irq_other(0, dev);
3483                         enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
3484                 }
3485         }
3486 }
3487
3488 #ifdef CONFIG_NET_POLL_CONTROLLER
3489 static void nv_poll_controller(struct net_device *dev)
3490 {
3491         nv_do_nic_poll((unsigned long) dev);
3492 }
3493 #endif
3494
3495 static void nv_do_stats_poll(unsigned long data)
3496 {
3497         struct net_device *dev = (struct net_device *) data;
3498         struct fe_priv *np = netdev_priv(dev);
3499         u8 __iomem *base = get_hwbase(dev);
3500
3501         np->estats.tx_bytes += readl(base + NvRegTxCnt);
3502         np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
3503         np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
3504         np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
3505         np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
3506         np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
3507         np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
3508         np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
3509         np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
3510         np->estats.tx_deferral += readl(base + NvRegTxDef);
3511         np->estats.tx_packets += readl(base + NvRegTxFrame);
3512         np->estats.tx_pause += readl(base + NvRegTxPause);
3513         np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
3514         np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
3515         np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
3516         np->estats.rx_runt += readl(base + NvRegRxRunt);
3517         np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
3518         np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
3519         np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
3520         np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
3521         np->estats.rx_length_error += readl(base + NvRegRxLenErr);
3522         np->estats.rx_unicast += readl(base + NvRegRxUnicast);
3523         np->estats.rx_multicast += readl(base + NvRegRxMulticast);
3524         np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
3525         np->estats.rx_bytes += readl(base + NvRegRxCnt);
3526         np->estats.rx_pause += readl(base + NvRegRxPause);
3527         np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
3528         np->estats.rx_packets =
3529                 np->estats.rx_unicast +
3530                 np->estats.rx_multicast +
3531                 np->estats.rx_broadcast;
3532         np->estats.rx_errors_total =
3533                 np->estats.rx_crc_errors +
3534                 np->estats.rx_over_errors +
3535                 np->estats.rx_frame_error +
3536                 (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
3537                 np->estats.rx_late_collision +
3538                 np->estats.rx_runt +
3539                 np->estats.rx_frame_too_long;
3540
3541         if (!np->in_shutdown)
3542                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
3543 }
3544
3545 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3546 {
3547         struct fe_priv *np = netdev_priv(dev);
3548         strcpy(info->driver, "forcedeth");
3549         strcpy(info->version, FORCEDETH_VERSION);
3550         strcpy(info->bus_info, pci_name(np->pci_dev));
3551 }
3552
3553 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3554 {
3555         struct fe_priv *np = netdev_priv(dev);
3556         wolinfo->supported = WAKE_MAGIC;
3557
3558         spin_lock_irq(&np->lock);
3559         if (np->wolenabled)
3560                 wolinfo->wolopts = WAKE_MAGIC;
3561         spin_unlock_irq(&np->lock);
3562 }
3563
3564 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
3565 {
3566         struct fe_priv *np = netdev_priv(dev);
3567         u8 __iomem *base = get_hwbase(dev);
3568         u32 flags = 0;
3569
3570         if (wolinfo->wolopts == 0) {
3571                 np->wolenabled = 0;
3572         } else if (wolinfo->wolopts & WAKE_MAGIC) {
3573                 np->wolenabled = 1;
3574                 flags = NVREG_WAKEUPFLAGS_ENABLE;
3575         }
3576         if (netif_running(dev)) {
3577                 spin_lock_irq(&np->lock);
3578                 writel(flags, base + NvRegWakeUpFlags);
3579                 spin_unlock_irq(&np->lock);
3580         }
3581         return 0;
3582 }
3583
3584 static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3585 {
3586         struct fe_priv *np = netdev_priv(dev);
3587         int adv;
3588
3589         spin_lock_irq(&np->lock);
3590         ecmd->port = PORT_MII;
3591         if (!netif_running(dev)) {
3592                 /* We do not track link speed / duplex setting if the
3593                  * interface is disabled. Force a link check */
3594                 if (nv_update_linkspeed(dev)) {
3595                         if (!netif_carrier_ok(dev))
3596                                 netif_carrier_on(dev);
3597                 } else {
3598                         if (netif_carrier_ok(dev))
3599                                 netif_carrier_off(dev);
3600                 }
3601         }
3602
3603         if (netif_carrier_ok(dev)) {
3604                 switch(np->linkspeed & (NVREG_LINKSPEED_MASK)) {
3605                 case NVREG_LINKSPEED_10:
3606                         ecmd->speed = SPEED_10;
3607                         break;
3608                 case NVREG_LINKSPEED_100:
3609                         ecmd->speed = SPEED_100;
3610                         break;
3611                 case NVREG_LINKSPEED_1000:
3612                         ecmd->speed = SPEED_1000;
3613                         break;
3614                 }
3615                 ecmd->duplex = DUPLEX_HALF;
3616                 if (np->duplex)
3617                         ecmd->duplex = DUPLEX_FULL;
3618         } else {
3619                 ecmd->speed = -1;
3620                 ecmd->duplex = -1;
3621         }
3622
3623         ecmd->autoneg = np->autoneg;
3624
3625         ecmd->advertising = ADVERTISED_MII;
3626         if (np->autoneg) {
3627                 ecmd->advertising |= ADVERTISED_Autoneg;
3628                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3629                 if (adv & ADVERTISE_10HALF)
3630                         ecmd->advertising |= ADVERTISED_10baseT_Half;
3631                 if (adv & ADVERTISE_10FULL)
3632                         ecmd->advertising |= ADVERTISED_10baseT_Full;
3633                 if (adv & ADVERTISE_100HALF)
3634                         ecmd->advertising |= ADVERTISED_100baseT_Half;
3635                 if (adv & ADVERTISE_100FULL)
3636                         ecmd->advertising |= ADVERTISED_100baseT_Full;
3637                 if (np->gigabit == PHY_GIGABIT) {
3638                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3639                         if (adv & ADVERTISE_1000FULL)
3640                                 ecmd->advertising |= ADVERTISED_1000baseT_Full;
3641                 }
3642         }
3643         ecmd->supported = (SUPPORTED_Autoneg |
3644                 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
3645                 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
3646                 SUPPORTED_MII);
3647         if (np->gigabit == PHY_GIGABIT)
3648                 ecmd->supported |= SUPPORTED_1000baseT_Full;
3649
3650         ecmd->phy_address = np->phyaddr;
3651         ecmd->transceiver = XCVR_EXTERNAL;
3652
3653         /* ignore maxtxpkt, maxrxpkt for now */
3654         spin_unlock_irq(&np->lock);
3655         return 0;
3656 }
3657
3658 static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3659 {
3660         struct fe_priv *np = netdev_priv(dev);
3661
3662         if (ecmd->port != PORT_MII)
3663                 return -EINVAL;
3664         if (ecmd->transceiver != XCVR_EXTERNAL)
3665                 return -EINVAL;
3666         if (ecmd->phy_address != np->phyaddr) {
3667                 /* TODO: support switching between multiple phys. Should be
3668                  * trivial, but not enabled due to lack of test hardware. */
3669                 return -EINVAL;
3670         }
3671         if (ecmd->autoneg == AUTONEG_ENABLE) {
3672                 u32 mask;
3673
3674                 mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
3675                           ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
3676                 if (np->gigabit == PHY_GIGABIT)
3677                         mask |= ADVERTISED_1000baseT_Full;
3678
3679                 if ((ecmd->advertising & mask) == 0)
3680                         return -EINVAL;
3681
3682         } else if (ecmd->autoneg == AUTONEG_DISABLE) {
3683                 /* Note: autonegotiation disable, speed 1000 intentionally
3684                  * forbidden - noone should need that. */
3685
3686                 if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
3687                         return -EINVAL;
3688                 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
3689                         return -EINVAL;
3690         } else {
3691                 return -EINVAL;
3692         }
3693
3694         netif_carrier_off(dev);
3695         if (netif_running(dev)) {
3696                 nv_disable_irq(dev);
3697                 netif_tx_lock_bh(dev);
3698                 spin_lock(&np->lock);
3699                 /* stop engines */
3700                 nv_stop_rx(dev);
3701                 nv_stop_tx(dev);
3702                 spin_unlock(&np->lock);
3703                 netif_tx_unlock_bh(dev);
3704         }
3705
3706         if (ecmd->autoneg == AUTONEG_ENABLE) {
3707                 int adv, bmcr;
3708
3709                 np->autoneg = 1;
3710
3711                 /* advertise only what has been requested */
3712                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3713                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3714                 if (ecmd->advertising & ADVERTISED_10baseT_Half)
3715                         adv |= ADVERTISE_10HALF;
3716                 if (ecmd->advertising & ADVERTISED_10baseT_Full)
3717                         adv |= ADVERTISE_10FULL;
3718                 if (ecmd->advertising & ADVERTISED_100baseT_Half)
3719                         adv |= ADVERTISE_100HALF;
3720                 if (ecmd->advertising & ADVERTISED_100baseT_Full)
3721                         adv |= ADVERTISE_100FULL;
3722                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisments but disable tx pause */
3723                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3724                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3725                         adv |=  ADVERTISE_PAUSE_ASYM;
3726                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3727
3728                 if (np->gigabit == PHY_GIGABIT) {
3729                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3730                         adv &= ~ADVERTISE_1000FULL;
3731                         if (ecmd->advertising & ADVERTISED_1000baseT_Full)
3732                                 adv |= ADVERTISE_1000FULL;
3733                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
3734                 }
3735
3736                 if (netif_running(dev))
3737                         printk(KERN_INFO "%s: link down.\n", dev->name);
3738                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3739                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
3740                         bmcr |= BMCR_ANENABLE;
3741                         /* reset the phy in order for settings to stick,
3742                          * and cause autoneg to start */
3743                         if (phy_reset(dev, bmcr)) {
3744                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3745                                 return -EINVAL;
3746                         }
3747                 } else {
3748                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3749                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3750                 }
3751         } else {
3752                 int adv, bmcr;
3753
3754                 np->autoneg = 0;
3755
3756                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3757                 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3758                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
3759                         adv |= ADVERTISE_10HALF;
3760                 if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
3761                         adv |= ADVERTISE_10FULL;
3762                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
3763                         adv |= ADVERTISE_100HALF;
3764                 if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
3765                         adv |= ADVERTISE_100FULL;
3766                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
3767                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
3768                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
3769                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3770                 }
3771                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
3772                         adv |=  ADVERTISE_PAUSE_ASYM;
3773                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3774                 }
3775                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
3776                 np->fixed_mode = adv;
3777
3778                 if (np->gigabit == PHY_GIGABIT) {
3779                         adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3780                         adv &= ~ADVERTISE_1000FULL;
3781                         mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
3782                 }
3783
3784                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3785                 bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
3786                 if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
3787                         bmcr |= BMCR_FULLDPLX;
3788                 if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
3789                         bmcr |= BMCR_SPEED100;
3790                 if (np->phy_oui == PHY_OUI_MARVELL) {
3791                         /* reset the phy in order for forced mode settings to stick */
3792                         if (phy_reset(dev, bmcr)) {
3793                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3794                                 return -EINVAL;
3795                         }
3796                 } else {
3797                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3798                         if (netif_running(dev)) {
3799                                 /* Wait a bit and then reconfigure the nic. */
3800                                 udelay(10);
3801                                 nv_linkchange(dev);
3802                         }
3803                 }
3804         }
3805
3806         if (netif_running(dev)) {
3807                 nv_start_rx(dev);
3808                 nv_start_tx(dev);
3809                 nv_enable_irq(dev);
3810         }
3811
3812         return 0;
3813 }
3814
3815 #define FORCEDETH_REGS_VER      1
3816
3817 static int nv_get_regs_len(struct net_device *dev)
3818 {
3819         struct fe_priv *np = netdev_priv(dev);
3820         return np->register_size;
3821 }
3822
3823 static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
3824 {
3825         struct fe_priv *np = netdev_priv(dev);
3826         u8 __iomem *base = get_hwbase(dev);
3827         u32 *rbuf = buf;
3828         int i;
3829
3830         regs->version = FORCEDETH_REGS_VER;
3831         spin_lock_irq(&np->lock);
3832         for (i = 0;i <= np->register_size/sizeof(u32); i++)
3833                 rbuf[i] = readl(base + i*sizeof(u32));
3834         spin_unlock_irq(&np->lock);
3835 }
3836
3837 static int nv_nway_reset(struct net_device *dev)
3838 {
3839         struct fe_priv *np = netdev_priv(dev);
3840         int ret;
3841
3842         if (np->autoneg) {
3843                 int bmcr;
3844
3845                 netif_carrier_off(dev);
3846                 if (netif_running(dev)) {
3847                         nv_disable_irq(dev);
3848                         netif_tx_lock_bh(dev);
3849                         spin_lock(&np->lock);
3850                         /* stop engines */
3851                         nv_stop_rx(dev);
3852                         nv_stop_tx(dev);
3853                         spin_unlock(&np->lock);
3854                         netif_tx_unlock_bh(dev);
3855                         printk(KERN_INFO "%s: link down.\n", dev->name);
3856                 }
3857
3858                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3859                 if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
3860                         bmcr |= BMCR_ANENABLE;
3861                         /* reset the phy in order for settings to stick*/
3862                         if (phy_reset(dev, bmcr)) {
3863                                 printk(KERN_INFO "%s: phy reset failed\n", dev->name);
3864                                 return -EINVAL;
3865                         }
3866                 } else {
3867                         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
3868                         mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
3869                 }
3870
3871                 if (netif_running(dev)) {
3872                         nv_start_rx(dev);
3873                         nv_start_tx(dev);
3874                         nv_enable_irq(dev);
3875                 }
3876                 ret = 0;
3877         } else {
3878                 ret = -EINVAL;
3879         }
3880
3881         return ret;
3882 }
3883
3884 static int nv_set_tso(struct net_device *dev, u32 value)
3885 {
3886         struct fe_priv *np = netdev_priv(dev);
3887
3888         if ((np->driver_data & DEV_HAS_CHECKSUM))
3889                 return ethtool_op_set_tso(dev, value);
3890         else
3891                 return -EOPNOTSUPP;
3892 }
3893
3894 static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
3895 {
3896         struct fe_priv *np = netdev_priv(dev);
3897
3898         ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
3899         ring->rx_mini_max_pending = 0;
3900         ring->rx_jumbo_max_pending = 0;
3901         ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
3902
3903         ring->rx_pending = np->rx_ring_size;
3904         ring->rx_mini_pending = 0;
3905         ring->rx_jumbo_pending = 0;
3906         ring->tx_pending = np->tx_ring_size;
3907 }
3908
3909 static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
3910 {
3911         struct fe_priv *np = netdev_priv(dev);
3912         u8 __iomem *base = get_hwbase(dev);
3913         u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
3914         dma_addr_t ring_addr;
3915
3916         if (ring->rx_pending < RX_RING_MIN ||
3917             ring->tx_pending < TX_RING_MIN ||
3918             ring->rx_mini_pending != 0 ||
3919             ring->rx_jumbo_pending != 0 ||
3920             (np->desc_ver == DESC_VER_1 &&
3921              (ring->rx_pending > RING_MAX_DESC_VER_1 ||
3922               ring->tx_pending > RING_MAX_DESC_VER_1)) ||
3923             (np->desc_ver != DESC_VER_1 &&
3924              (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
3925               ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
3926                 return -EINVAL;
3927         }
3928
3929         /* allocate new rings */
3930         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3931                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
3932                                             sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
3933                                             &ring_addr);
3934         } else {
3935                 rxtx_ring = pci_alloc_consistent(np->pci_dev,
3936                                             sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
3937                                             &ring_addr);
3938         }
3939         rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
3940         tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
3941         if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
3942                 /* fall back to old rings */
3943                 if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3944                         if (rxtx_ring)
3945                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
3946                                                     rxtx_ring, ring_addr);
3947                 } else {
3948                         if (rxtx_ring)
3949                                 pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
3950                                                     rxtx_ring, ring_addr);
3951                 }
3952                 if (rx_skbuff)
3953                         kfree(rx_skbuff);
3954                 if (tx_skbuff)
3955                         kfree(tx_skbuff);
3956                 goto exit;
3957         }
3958
3959         if (netif_running(dev)) {
3960                 nv_disable_irq(dev);
3961                 netif_tx_lock_bh(dev);
3962                 spin_lock(&np->lock);
3963                 /* stop engines */
3964                 nv_stop_rx(dev);
3965                 nv_stop_tx(dev);
3966                 nv_txrx_reset(dev);
3967                 /* drain queues */
3968                 nv_drain_rx(dev);
3969                 nv_drain_tx(dev);
3970                 /* delete queues */
3971                 free_rings(dev);
3972         }
3973
3974         /* set new values */
3975         np->rx_ring_size = ring->rx_pending;
3976         np->tx_ring_size = ring->tx_pending;
3977         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
3978                 np->rx_ring.orig = (struct ring_desc*)rxtx_ring;
3979                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
3980         } else {
3981                 np->rx_ring.ex = (struct ring_desc_ex*)rxtx_ring;
3982                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
3983         }
3984         np->rx_skb = (struct nv_skb_map*)rx_skbuff;
3985         np->tx_skb = (struct nv_skb_map*)tx_skbuff;
3986         np->ring_addr = ring_addr;
3987
3988         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
3989         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
3990
3991         if (netif_running(dev)) {
3992                 /* reinit driver view of the queues */
3993                 set_bufsize(dev);
3994                 if (nv_init_ring(dev)) {
3995                         if (!np->in_shutdown)
3996                                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3997                 }
3998
3999                 /* reinit nic view of the queues */
4000                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4001                 setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4002                 writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4003                         base + NvRegRingSizes);
4004                 pci_push(base);
4005                 writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4006                 pci_push(base);
4007
4008                 /* restart engines */
4009                 nv_start_rx(dev);
4010                 nv_start_tx(dev);
4011                 spin_unlock(&np->lock);
4012                 netif_tx_unlock_bh(dev);
4013                 nv_enable_irq(dev);
4014         }
4015         return 0;
4016 exit:
4017         return -ENOMEM;
4018 }
4019
4020 static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4021 {
4022         struct fe_priv *np = netdev_priv(dev);
4023
4024         pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4025         pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4026         pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4027 }
4028
4029 static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4030 {
4031         struct fe_priv *np = netdev_priv(dev);
4032         int adv, bmcr;
4033
4034         if ((!np->autoneg && np->duplex == 0) ||
4035             (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4036                 printk(KERN_INFO "%s: can not set pause settings when forced link is in half duplex.\n",
4037                        dev->name);
4038                 return -EINVAL;
4039         }
4040         if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4041                 printk(KERN_INFO "%s: hardware does not support tx pause frames.\n", dev->name);
4042                 return -EINVAL;
4043         }
4044
4045         netif_carrier_off(dev);
4046         if (netif_running(dev)) {
4047                 nv_disable_irq(dev);
4048                 netif_tx_lock_bh(dev);
4049                 spin_lock(&np->lock);
4050                 /* stop engines */
4051                 nv_stop_rx(dev);
4052                 nv_stop_tx(dev);
4053                 spin_unlock(&np->lock);
4054                 netif_tx_unlock_bh(dev);
4055         }
4056
4057         np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4058         if (pause->rx_pause)
4059                 np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4060         if (pause->tx_pause)
4061                 np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4062
4063         if (np->autoneg && pause->autoneg) {
4064                 np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4065
4066                 adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4067                 adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4068                 if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
4069                         adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4070                 if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4071                         adv |=  ADVERTISE_PAUSE_ASYM;
4072                 mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4073
4074                 if (netif_running(dev))
4075                         printk(KERN_INFO "%s: link down.\n", dev->name);
4076                 bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4077                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4078                 mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4079         } else {
4080                 np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4081                 if (pause->rx_pause)
4082                         np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4083                 if (pause->tx_pause)
4084                         np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4085
4086                 if (!netif_running(dev))
4087                         nv_update_linkspeed(dev);
4088                 else
4089                         nv_update_pause(dev, np->pause_flags);
4090         }
4091
4092         if (netif_running(dev)) {
4093                 nv_start_rx(dev);
4094                 nv_start_tx(dev);
4095                 nv_enable_irq(dev);
4096         }
4097         return 0;
4098 }
4099
4100 static u32 nv_get_rx_csum(struct net_device *dev)
4101 {
4102         struct fe_priv *np = netdev_priv(dev);
4103         return (np->rx_csum) != 0;
4104 }
4105
4106 static int nv_set_rx_csum(struct net_device *dev, u32 data)
4107 {
4108         struct fe_priv *np = netdev_priv(dev);
4109         u8 __iomem *base = get_hwbase(dev);
4110         int retcode = 0;
4111
4112         if (np->driver_data & DEV_HAS_CHECKSUM) {
4113                 if (data) {
4114                         np->rx_csum = 1;
4115                         np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4116                 } else {
4117                         np->rx_csum = 0;
4118                         /* vlan is dependent on rx checksum offload */
4119                         if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
4120                                 np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4121                 }
4122                 if (netif_running(dev)) {
4123                         spin_lock_irq(&np->lock);
4124                         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4125                         spin_unlock_irq(&np->lock);
4126                 }
4127         } else {
4128                 return -EINVAL;
4129         }
4130
4131         return retcode;
4132 }
4133
4134 static int nv_set_tx_csum(struct net_device *dev, u32 data)
4135 {
4136         struct fe_priv *np = netdev_priv(dev);
4137
4138         if (np->driver_data & DEV_HAS_CHECKSUM)
4139                 return ethtool_op_set_tx_hw_csum(dev, data);
4140         else
4141                 return -EOPNOTSUPP;
4142 }
4143
4144 static int nv_set_sg(struct net_device *dev, u32 data)
4145 {
4146         struct fe_priv *np = netdev_priv(dev);
4147
4148         if (np->driver_data & DEV_HAS_CHECKSUM)
4149                 return ethtool_op_set_sg(dev, data);
4150         else
4151                 return -EOPNOTSUPP;
4152 }
4153
4154 static int nv_get_stats_count(struct net_device *dev)
4155 {
4156         struct fe_priv *np = netdev_priv(dev);
4157
4158         if (np->driver_data & DEV_HAS_STATISTICS)
4159                 return sizeof(struct nv_ethtool_stats)/sizeof(u64);
4160         else
4161                 return 0;
4162 }
4163
4164 static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
4165 {
4166         struct fe_priv *np = netdev_priv(dev);
4167
4168         /* update stats */
4169         nv_do_stats_poll((unsigned long)dev);
4170
4171         memcpy(buffer, &np->estats, nv_get_stats_count(dev)*sizeof(u64));
4172 }
4173
4174 static int nv_self_test_count(struct net_device *dev)
4175 {
4176         struct fe_priv *np = netdev_priv(dev);
4177
4178         if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4179                 return NV_TEST_COUNT_EXTENDED;
4180         else
4181                 return NV_TEST_COUNT_BASE;
4182 }
4183
4184 static int nv_link_test(struct net_device *dev)
4185 {
4186         struct fe_priv *np = netdev_priv(dev);
4187         int mii_status;
4188
4189         mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4190         mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4191
4192         /* check phy link status */
4193         if (!(mii_status & BMSR_LSTATUS))
4194                 return 0;
4195         else
4196                 return 1;
4197 }
4198
4199 static int nv_register_test(struct net_device *dev)
4200 {
4201         u8 __iomem *base = get_hwbase(dev);
4202         int i = 0;
4203         u32 orig_read, new_read;
4204
4205         do {
4206                 orig_read = readl(base + nv_registers_test[i].reg);
4207
4208                 /* xor with mask to toggle bits */
4209                 orig_read ^= nv_registers_test[i].mask;
4210
4211                 writel(orig_read, base + nv_registers_test[i].reg);
4212
4213                 new_read = readl(base + nv_registers_test[i].reg);
4214
4215                 if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4216                         return 0;
4217
4218                 /* restore original value */
4219                 orig_read ^= nv_registers_test[i].mask;
4220                 writel(orig_read, base + nv_registers_test[i].reg);
4221
4222         } while (nv_registers_test[++i].reg != 0);
4223
4224         return 1;
4225 }
4226
4227 static int nv_interrupt_test(struct net_device *dev)
4228 {
4229         struct fe_priv *np = netdev_priv(dev);
4230         u8 __iomem *base = get_hwbase(dev);
4231         int ret = 1;
4232         int testcnt;
4233         u32 save_msi_flags, save_poll_interval = 0;
4234
4235         if (netif_running(dev)) {
4236                 /* free current irq */
4237                 nv_free_irq(dev);
4238                 save_poll_interval = readl(base+NvRegPollingInterval);
4239         }
4240
4241         /* flag to test interrupt handler */
4242         np->intr_test = 0;
4243
4244         /* setup test irq */
4245         save_msi_flags = np->msi_flags;
4246         np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4247         np->msi_flags |= 0x001; /* setup 1 vector */
4248         if (nv_request_irq(dev, 1))
4249                 return 0;
4250
4251         /* setup timer interrupt */
4252         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4253         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4254
4255         nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4256
4257         /* wait for at least one interrupt */
4258         msleep(100);
4259
4260         spin_lock_irq(&np->lock);
4261
4262         /* flag should be set within ISR */
4263         testcnt = np->intr_test;
4264         if (!testcnt)
4265                 ret = 2;
4266
4267         nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4268         if (!(np->msi_flags & NV_MSI_X_ENABLED))
4269                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4270         else
4271                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4272
4273         spin_unlock_irq(&np->lock);
4274
4275         nv_free_irq(dev);
4276
4277         np->msi_flags = save_msi_flags;
4278
4279         if (netif_running(dev)) {
4280                 writel(save_poll_interval, base + NvRegPollingInterval);
4281                 writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4282                 /* restore original irq */
4283                 if (nv_request_irq(dev, 0))
4284                         return 0;
4285         }
4286
4287         return ret;
4288 }
4289
4290 static int nv_loopback_test(struct net_device *dev)
4291 {
4292         struct fe_priv *np = netdev_priv(dev);
4293         u8 __iomem *base = get_hwbase(dev);
4294         struct sk_buff *tx_skb, *rx_skb;
4295         dma_addr_t test_dma_addr;
4296         u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
4297         u32 flags;
4298         int len, i, pkt_len;
4299         u8 *pkt_data;
4300         u32 filter_flags = 0;
4301         u32 misc1_flags = 0;
4302         int ret = 1;
4303
4304         if (netif_running(dev)) {
4305                 nv_disable_irq(dev);
4306                 filter_flags = readl(base + NvRegPacketFilterFlags);
4307                 misc1_flags = readl(base + NvRegMisc1);
4308         } else {
4309                 nv_txrx_reset(dev);
4310         }
4311
4312         /* reinit driver view of the rx queue */
4313         set_bufsize(dev);
4314         nv_init_ring(dev);
4315
4316         /* setup hardware for loopback */
4317         writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
4318         writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
4319
4320         /* reinit nic view of the rx queue */
4321         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4322         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4323         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4324                 base + NvRegRingSizes);
4325         pci_push(base);
4326
4327         /* restart rx engine */
4328         nv_start_rx(dev);
4329         nv_start_tx(dev);
4330
4331         /* setup packet for tx */
4332         pkt_len = ETH_DATA_LEN;
4333         tx_skb = dev_alloc_skb(pkt_len);
4334         if (!tx_skb) {
4335                 printk(KERN_ERR "dev_alloc_skb() failed during loopback test"
4336                          " of %s\n", dev->name);
4337                 ret = 0;
4338                 goto out;
4339         }
4340         pkt_data = skb_put(tx_skb, pkt_len);
4341         for (i = 0; i < pkt_len; i++)
4342                 pkt_data[i] = (u8)(i & 0xff);
4343         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
4344                                        tx_skb->end-tx_skb->data, PCI_DMA_FROMDEVICE);
4345
4346         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4347                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
4348                 np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4349         } else {
4350                 np->tx_ring.ex[0].bufhigh = cpu_to_le64(test_dma_addr) >> 32;
4351                 np->tx_ring.ex[0].buflow = cpu_to_le64(test_dma_addr) & 0x0FFFFFFFF;
4352                 np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
4353         }
4354         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4355         pci_push(get_hwbase(dev));
4356
4357         msleep(500);
4358
4359         /* check for rx of the packet */
4360         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4361                 flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
4362                 len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
4363
4364         } else {
4365                 flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
4366                 len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
4367         }
4368
4369         if (flags & NV_RX_AVAIL) {
4370                 ret = 0;
4371         } else if (np->desc_ver == DESC_VER_1) {
4372                 if (flags & NV_RX_ERROR)
4373                         ret = 0;
4374         } else {
4375                 if (flags & NV_RX2_ERROR) {
4376                         ret = 0;
4377                 }
4378         }
4379
4380         if (ret) {
4381                 if (len != pkt_len) {
4382                         ret = 0;
4383                         dprintk(KERN_DEBUG "%s: loopback len mismatch %d vs %d\n",
4384                                 dev->name, len, pkt_len);
4385                 } else {
4386                         rx_skb = np->rx_skb[0].skb;
4387                         for (i = 0; i < pkt_len; i++) {
4388                                 if (rx_skb->data[i] != (u8)(i & 0xff)) {
4389                                         ret = 0;
4390                                         dprintk(KERN_DEBUG "%s: loopback pattern check failed on byte %d\n",
4391                                                 dev->name, i);
4392                                         break;
4393                                 }
4394                         }
4395                 }
4396         } else {
4397                 dprintk(KERN_DEBUG "%s: loopback - did not receive test packet\n", dev->name);
4398         }
4399
4400         pci_unmap_page(np->pci_dev, test_dma_addr,
4401                        tx_skb->end-tx_skb->data,
4402                        PCI_DMA_TODEVICE);
4403         dev_kfree_skb_any(tx_skb);
4404  out:
4405         /* stop engines */
4406         nv_stop_rx(dev);
4407         nv_stop_tx(dev);
4408         nv_txrx_reset(dev);
4409         /* drain rx queue */
4410         nv_drain_rx(dev);
4411         nv_drain_tx(dev);
4412
4413         if (netif_running(dev)) {
4414                 writel(misc1_flags, base + NvRegMisc1);
4415                 writel(filter_flags, base + NvRegPacketFilterFlags);
4416                 nv_enable_irq(dev);
4417         }
4418
4419         return ret;
4420 }
4421
4422 static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
4423 {
4424         struct fe_priv *np = netdev_priv(dev);
4425         u8 __iomem *base = get_hwbase(dev);
4426         int result;
4427         memset(buffer, 0, nv_self_test_count(dev)*sizeof(u64));
4428
4429         if (!nv_link_test(dev)) {
4430                 test->flags |= ETH_TEST_FL_FAILED;
4431                 buffer[0] = 1;
4432         }
4433
4434         if (test->flags & ETH_TEST_FL_OFFLINE) {
4435                 if (netif_running(dev)) {
4436                         netif_stop_queue(dev);
4437                         netif_poll_disable(dev);
4438                         netif_tx_lock_bh(dev);
4439                         spin_lock_irq(&np->lock);
4440                         nv_disable_hw_interrupts(dev, np->irqmask);
4441                         if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
4442                                 writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4443                         } else {
4444                                 writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4445                         }
4446                         /* stop engines */
4447                         nv_stop_rx(dev);
4448                         nv_stop_tx(dev);
4449                         nv_txrx_reset(dev);
4450                         /* drain rx queue */
4451                         nv_drain_rx(dev);
4452                         nv_drain_tx(dev);
4453                         spin_unlock_irq(&np->lock);
4454                         netif_tx_unlock_bh(dev);
4455                 }
4456
4457                 if (!nv_register_test(dev)) {
4458                         test->flags |= ETH_TEST_FL_FAILED;
4459                         buffer[1] = 1;
4460                 }
4461
4462                 result = nv_interrupt_test(dev);
4463                 if (result != 1) {
4464                         test->flags |= ETH_TEST_FL_FAILED;
4465                         buffer[2] = 1;
4466                 }
4467                 if (result == 0) {
4468                         /* bail out */
4469                         return;
4470                 }
4471
4472                 if (!nv_loopback_test(dev)) {
4473                         test->flags |= ETH_TEST_FL_FAILED;
4474                         buffer[3] = 1;
4475                 }
4476
4477                 if (netif_running(dev)) {
4478                         /* reinit driver view of the rx queue */
4479                         set_bufsize(dev);
4480                         if (nv_init_ring(dev)) {
4481                                 if (!np->in_shutdown)
4482                                         mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4483                         }
4484                         /* reinit nic view of the rx queue */
4485                         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4486                         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4487                         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4488                                 base + NvRegRingSizes);
4489                         pci_push(base);
4490                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4491                         pci_push(base);
4492                         /* restart rx engine */
4493                         nv_start_rx(dev);
4494                         nv_start_tx(dev);
4495                         netif_start_queue(dev);
4496                         netif_poll_enable(dev);
4497                         nv_enable_hw_interrupts(dev, np->irqmask);
4498                 }
4499         }
4500 }
4501
4502 static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
4503 {
4504         switch (stringset) {
4505         case ETH_SS_STATS:
4506                 memcpy(buffer, &nv_estats_str, nv_get_stats_count(dev)*sizeof(struct nv_ethtool_str));
4507                 break;
4508         case ETH_SS_TEST:
4509                 memcpy(buffer, &nv_etests_str, nv_self_test_count(dev)*sizeof(struct nv_ethtool_str));
4510                 break;
4511         }
4512 }
4513
4514 static const struct ethtool_ops ops = {
4515         .get_drvinfo = nv_get_drvinfo,
4516         .get_link = ethtool_op_get_link,
4517         .get_wol = nv_get_wol,
4518         .set_wol = nv_set_wol,
4519         .get_settings = nv_get_settings,
4520         .set_settings = nv_set_settings,
4521         .get_regs_len = nv_get_regs_len,
4522         .get_regs = nv_get_regs,
4523         .nway_reset = nv_nway_reset,
4524         .get_perm_addr = ethtool_op_get_perm_addr,
4525         .get_tso = ethtool_op_get_tso,
4526         .set_tso = nv_set_tso,
4527         .get_ringparam = nv_get_ringparam,
4528         .set_ringparam = nv_set_ringparam,
4529         .get_pauseparam = nv_get_pauseparam,
4530         .set_pauseparam = nv_set_pauseparam,
4531         .get_rx_csum = nv_get_rx_csum,
4532         .set_rx_csum = nv_set_rx_csum,
4533         .get_tx_csum = ethtool_op_get_tx_csum,
4534         .set_tx_csum = nv_set_tx_csum,
4535         .get_sg = ethtool_op_get_sg,
4536         .set_sg = nv_set_sg,
4537         .get_strings = nv_get_strings,
4538         .get_stats_count = nv_get_stats_count,
4539         .get_ethtool_stats = nv_get_ethtool_stats,
4540         .self_test_count = nv_self_test_count,
4541         .self_test = nv_self_test,
4542 };
4543
4544 static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
4545 {
4546         struct fe_priv *np = get_nvpriv(dev);
4547
4548         spin_lock_irq(&np->lock);
4549
4550         /* save vlan group */
4551         np->vlangrp = grp;
4552
4553         if (grp) {
4554                 /* enable vlan on MAC */
4555                 np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
4556         } else {
4557                 /* disable vlan on MAC */
4558                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4559                 np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4560         }
4561
4562         writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4563
4564         spin_unlock_irq(&np->lock);
4565 };
4566
4567 static void nv_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
4568 {
4569         /* nothing to do */
4570 };
4571
4572 /* The mgmt unit and driver use a semaphore to access the phy during init */
4573 static int nv_mgmt_acquire_sema(struct net_device *dev)
4574 {
4575         u8 __iomem *base = get_hwbase(dev);
4576         int i;
4577         u32 tx_ctrl, mgmt_sema;
4578
4579         for (i = 0; i < 10; i++) {
4580                 mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
4581                 if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
4582                         break;
4583                 msleep(500);
4584         }
4585
4586         if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
4587                 return 0;
4588
4589         for (i = 0; i < 2; i++) {
4590                 tx_ctrl = readl(base + NvRegTransmitterControl);
4591                 tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
4592                 writel(tx_ctrl, base + NvRegTransmitterControl);
4593
4594                 /* verify that semaphore was acquired */
4595                 tx_ctrl = readl(base + NvRegTransmitterControl);
4596                 if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
4597                     ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE))
4598                         return 1;
4599                 else
4600                         udelay(50);
4601         }
4602
4603         return 0;
4604 }
4605
4606 static int nv_open(struct net_device *dev)
4607 {
4608         struct fe_priv *np = netdev_priv(dev);
4609         u8 __iomem *base = get_hwbase(dev);
4610         int ret = 1;
4611         int oom, i;
4612
4613         dprintk(KERN_DEBUG "nv_open: begin\n");
4614
4615         /* erase previous misconfiguration */
4616         if (np->driver_data & DEV_HAS_POWER_CNTRL)
4617                 nv_mac_reset(dev);
4618         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4619         writel(0, base + NvRegMulticastAddrB);
4620         writel(0, base + NvRegMulticastMaskA);
4621         writel(0, base + NvRegMulticastMaskB);
4622         writel(0, base + NvRegPacketFilterFlags);
4623
4624         writel(0, base + NvRegTransmitterControl);
4625         writel(0, base + NvRegReceiverControl);
4626
4627         writel(0, base + NvRegAdapterControl);
4628
4629         if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
4630                 writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
4631
4632         /* initialize descriptor rings */
4633         set_bufsize(dev);
4634         oom = nv_init_ring(dev);
4635
4636         writel(0, base + NvRegLinkSpeed);
4637         writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
4638         nv_txrx_reset(dev);
4639         writel(0, base + NvRegUnknownSetupReg6);
4640
4641         np->in_shutdown = 0;
4642
4643         /* give hw rings */
4644         setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4645         writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4646                 base + NvRegRingSizes);
4647
4648         writel(np->linkspeed, base + NvRegLinkSpeed);
4649         if (np->desc_ver == DESC_VER_1)
4650                 writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
4651         else
4652                 writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
4653         writel(np->txrxctl_bits, base + NvRegTxRxControl);
4654         writel(np->vlanctl_bits, base + NvRegVlanControl);
4655         pci_push(base);
4656         writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
4657         reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
4658                         NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
4659                         KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
4660
4661         writel(0, base + NvRegMIIMask);
4662         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4663         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
4664
4665         writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
4666         writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
4667         writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
4668         writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4669
4670         writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
4671         get_random_bytes(&i, sizeof(i));
4672         writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
4673         writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
4674         writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
4675         if (poll_interval == -1) {
4676                 if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
4677                         writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
4678                 else
4679                         writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4680         }
4681         else
4682                 writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
4683         writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4684         writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
4685                         base + NvRegAdapterControl);
4686         writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
4687         writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
4688         if (np->wolenabled)
4689                 writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
4690
4691         i = readl(base + NvRegPowerState);
4692         if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0)
4693                 writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
4694
4695         pci_push(base);
4696         udelay(10);
4697         writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
4698
4699         nv_disable_hw_interrupts(dev, np->irqmask);
4700         pci_push(base);
4701         writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
4702         writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4703         pci_push(base);
4704
4705         if (nv_request_irq(dev, 0)) {
4706                 goto out_drain;
4707         }
4708
4709         /* ask for interrupts */
4710         nv_enable_hw_interrupts(dev, np->irqmask);
4711
4712         spin_lock_irq(&np->lock);
4713         writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
4714         writel(0, base + NvRegMulticastAddrB);
4715         writel(0, base + NvRegMulticastMaskA);
4716         writel(0, base + NvRegMulticastMaskB);
4717         writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
4718         /* One manual link speed update: Interrupts are enabled, future link
4719          * speed changes cause interrupts and are handled by nv_link_irq().
4720          */
4721         {
4722                 u32 miistat;
4723                 miistat = readl(base + NvRegMIIStatus);
4724                 writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
4725                 dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
4726         }
4727         /* set linkspeed to invalid value, thus force nv_update_linkspeed
4728          * to init hw */
4729         np->linkspeed = 0;
4730         ret = nv_update_linkspeed(dev);
4731         nv_start_rx(dev);
4732         nv_start_tx(dev);
4733         netif_start_queue(dev);
4734         netif_poll_enable(dev);
4735
4736         if (ret) {
4737                 netif_carrier_on(dev);
4738         } else {
4739                 printk("%s: no link during initialization.\n", dev->name);
4740                 netif_carrier_off(dev);
4741         }
4742         if (oom)
4743                 mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4744
4745         /* start statistics timer */
4746         if (np->driver_data & DEV_HAS_STATISTICS)
4747                 mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
4748
4749         spin_unlock_irq(&np->lock);
4750
4751         return 0;
4752 out_drain:
4753         drain_ring(dev);
4754         return ret;
4755 }
4756
4757 static int nv_close(struct net_device *dev)
4758 {
4759         struct fe_priv *np = netdev_priv(dev);
4760         u8 __iomem *base;
4761
4762         spin_lock_irq(&np->lock);
4763         np->in_shutdown = 1;
4764         spin_unlock_irq(&np->lock);
4765         netif_poll_disable(dev);
4766         synchronize_irq(dev->irq);
4767
4768         del_timer_sync(&np->oom_kick);
4769         del_timer_sync(&np->nic_poll);
4770         del_timer_sync(&np->stats_poll);
4771
4772         netif_stop_queue(dev);
4773         spin_lock_irq(&np->lock);
4774         nv_stop_tx(dev);
4775         nv_stop_rx(dev);
4776         nv_txrx_reset(dev);
4777
4778         /* disable interrupts on the nic or we will lock up */
4779         base = get_hwbase(dev);
4780         nv_disable_hw_interrupts(dev, np->irqmask);
4781         pci_push(base);
4782         dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name);
4783
4784         spin_unlock_irq(&np->lock);
4785
4786         nv_free_irq(dev);
4787
4788         drain_ring(dev);
4789
4790         if (np->wolenabled)
4791                 nv_start_rx(dev);
4792
4793         /* FIXME: power down nic */
4794
4795         return 0;
4796 }
4797
4798 static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
4799 {
4800         struct net_device *dev;
4801         struct fe_priv *np;
4802         unsigned long addr;
4803         u8 __iomem *base;
4804         int err, i;
4805         u32 powerstate, txreg;
4806         u32 phystate_orig = 0, phystate;
4807         int phyinitialized = 0;
4808
4809         dev = alloc_etherdev(sizeof(struct fe_priv));
4810         err = -ENOMEM;
4811         if (!dev)
4812                 goto out;
4813
4814         np = netdev_priv(dev);
4815         np->pci_dev = pci_dev;
4816         spin_lock_init(&np->lock);
4817         SET_MODULE_OWNER(dev);
4818         SET_NETDEV_DEV(dev, &pci_dev->dev);
4819
4820         init_timer(&np->oom_kick);
4821         np->oom_kick.data = (unsigned long) dev;
4822         np->oom_kick.function = &nv_do_rx_refill;       /* timer handler */
4823         init_timer(&np->nic_poll);
4824         np->nic_poll.data = (unsigned long) dev;
4825         np->nic_poll.function = &nv_do_nic_poll;        /* timer handler */
4826         init_timer(&np->stats_poll);
4827         np->stats_poll.data = (unsigned long) dev;
4828         np->stats_poll.function = &nv_do_stats_poll;    /* timer handler */
4829
4830         err = pci_enable_device(pci_dev);
4831         if (err) {
4832                 printk(KERN_INFO "forcedeth: pci_enable_dev failed (%d) for device %s\n",
4833                                 err, pci_name(pci_dev));
4834                 goto out_free;
4835         }
4836
4837         pci_set_master(pci_dev);
4838
4839         err = pci_request_regions(pci_dev, DRV_NAME);
4840         if (err < 0)
4841                 goto out_disable;
4842
4843         if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS))
4844                 np->register_size = NV_PCI_REGSZ_VER2;
4845         else
4846                 np->register_size = NV_PCI_REGSZ_VER1;
4847
4848         err = -EINVAL;
4849         addr = 0;
4850         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
4851                 dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n",
4852                                 pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i),
4853                                 pci_resource_len(pci_dev, i),
4854                                 pci_resource_flags(pci_dev, i));
4855                 if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
4856                                 pci_resource_len(pci_dev, i) >= np->register_size) {
4857                         addr = pci_resource_start(pci_dev, i);
4858                         break;
4859                 }
4860         }
4861         if (i == DEVICE_COUNT_RESOURCE) {
4862                 printk(KERN_INFO "forcedeth: Couldn't find register window for device %s.\n",
4863                                         pci_name(pci_dev));
4864                 goto out_relreg;
4865         }
4866
4867         /* copy of driver data */
4868         np->driver_data = id->driver_data;
4869
4870         /* handle different descriptor versions */
4871         if (id->driver_data & DEV_HAS_HIGH_DMA) {
4872                 /* packet format 3: supports 40-bit addressing */
4873                 np->desc_ver = DESC_VER_3;
4874                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
4875                 if (dma_64bit) {
4876                         if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
4877                                 printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
4878                                        pci_name(pci_dev));
4879                         } else {
4880                                 dev->features |= NETIF_F_HIGHDMA;
4881                                 printk(KERN_INFO "forcedeth: using HIGHDMA\n");
4882                         }
4883                         if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
4884                                 printk(KERN_INFO "forcedeth: 64-bit DMA (consistent) failed, using 32-bit ring buffers for device %s.\n",
4885                                        pci_name(pci_dev));
4886                         }
4887                 }
4888         } else if (id->driver_data & DEV_HAS_LARGEDESC) {
4889                 /* packet format 2: supports jumbo frames */
4890                 np->desc_ver = DESC_VER_2;
4891                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
4892         } else {
4893                 /* original packet format */
4894                 np->desc_ver = DESC_VER_1;
4895                 np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
4896         }
4897
4898         np->pkt_limit = NV_PKTLIMIT_1;
4899         if (id->driver_data & DEV_HAS_LARGEDESC)
4900                 np->pkt_limit = NV_PKTLIMIT_2;
4901
4902         if (id->driver_data & DEV_HAS_CHECKSUM) {
4903                 np->rx_csum = 1;
4904                 np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4905                 dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
4906                 dev->features |= NETIF_F_TSO;
4907         }
4908
4909         np->vlanctl_bits = 0;
4910         if (id->driver_data & DEV_HAS_VLAN) {
4911                 np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
4912                 dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
4913                 dev->vlan_rx_register = nv_vlan_rx_register;
4914                 dev->vlan_rx_kill_vid = nv_vlan_rx_kill_vid;
4915         }
4916
4917         np->msi_flags = 0;
4918         if ((id->driver_data & DEV_HAS_MSI) && msi) {
4919                 np->msi_flags |= NV_MSI_CAPABLE;
4920         }
4921         if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
4922                 np->msi_flags |= NV_MSI_X_CAPABLE;
4923         }
4924
4925         np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
4926         if (id->driver_data & DEV_HAS_PAUSEFRAME_TX) {
4927                 np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
4928         }
4929
4930
4931         err = -ENOMEM;
4932         np->base = ioremap(addr, np->register_size);
4933         if (!np->base)
4934                 goto out_relreg;
4935         dev->base_addr = (unsigned long)np->base;
4936
4937         dev->irq = pci_dev->irq;
4938
4939         np->rx_ring_size = RX_RING_DEFAULT;
4940         np->tx_ring_size = TX_RING_DEFAULT;
4941
4942         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
4943                 np->rx_ring.orig = pci_alloc_consistent(pci_dev,
4944                                         sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
4945                                         &np->ring_addr);
4946                 if (!np->rx_ring.orig)
4947                         goto out_unmap;
4948                 np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4949         } else {
4950                 np->rx_ring.ex = pci_alloc_consistent(pci_dev,
4951                                         sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
4952                                         &np->ring_addr);
4953                 if (!np->rx_ring.ex)
4954                         goto out_unmap;
4955                 np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4956         }
4957         np->rx_skb = kmalloc(sizeof(struct nv_skb_map) * np->rx_ring_size, GFP_KERNEL);
4958         np->tx_skb = kmalloc(sizeof(struct nv_skb_map) * np->tx_ring_size, GFP_KERNEL);
4959         if (!np->rx_skb || !np->tx_skb)
4960                 goto out_freering;
4961         memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4962         memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4963
4964         dev->open = nv_open;
4965         dev->stop = nv_close;
4966         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
4967                 dev->hard_start_xmit = nv_start_xmit;
4968         else
4969                 dev->hard_start_xmit = nv_start_xmit_optimized;
4970         dev->get_stats = nv_get_stats;
4971         dev->change_mtu = nv_change_mtu;
4972         dev->set_mac_address = nv_set_mac_address;
4973         dev->set_multicast_list = nv_set_multicast;
4974 #ifdef CONFIG_NET_POLL_CONTROLLER
4975         dev->poll_controller = nv_poll_controller;
4976 #endif
4977         dev->weight = RX_WORK_PER_LOOP;
4978 #ifdef CONFIG_FORCEDETH_NAPI
4979         dev->poll = nv_napi_poll;
4980 #endif
4981         SET_ETHTOOL_OPS(dev, &ops);
4982         dev->tx_timeout = nv_tx_timeout;
4983         dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
4984
4985         pci_set_drvdata(pci_dev, dev);
4986
4987         /* read the mac address */
4988         base = get_hwbase(dev);
4989         np->orig_mac[0] = readl(base + NvRegMacAddrA);
4990         np->orig_mac[1] = readl(base + NvRegMacAddrB);
4991
4992         /* check the workaround bit for correct mac address order */
4993         txreg = readl(base + NvRegTransmitPoll);
4994         if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
4995                 /* mac address is already in correct order */
4996                 dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
4997                 dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
4998                 dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
4999                 dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5000                 dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5001                 dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5002         } else {
5003                 /* need to reverse mac address to correct order */
5004                 dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5005                 dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5006                 dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5007                 dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5008                 dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5009                 dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5010                 /* set permanent address to be correct aswell */
5011                 np->orig_mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
5012                         (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
5013                 np->orig_mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
5014                 writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5015         }
5016         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
5017
5018         if (!is_valid_ether_addr(dev->perm_addr)) {
5019                 /*
5020                  * Bad mac address. At least one bios sets the mac address
5021                  * to 01:23:45:67:89:ab
5022                  */
5023                 printk(KERN_ERR "%s: Invalid Mac address detected: %02x:%02x:%02x:%02x:%02x:%02x\n",
5024                         pci_name(pci_dev),
5025                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
5026                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
5027                 printk(KERN_ERR "Please complain to your hardware vendor. Switching to a random MAC.\n");
5028                 dev->dev_addr[0] = 0x00;
5029                 dev->dev_addr[1] = 0x00;
5030                 dev->dev_addr[2] = 0x6c;
5031                 get_random_bytes(&dev->dev_addr[3], 3);
5032         }
5033
5034         dprintk(KERN_DEBUG "%s: MAC Address %02x:%02x:%02x:%02x:%02x:%02x\n", pci_name(pci_dev),
5035                         dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
5036                         dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
5037
5038         /* set mac address */
5039         nv_copy_mac_to_hw(dev);
5040
5041         /* disable WOL */
5042         writel(0, base + NvRegWakeUpFlags);
5043         np->wolenabled = 0;
5044
5045         if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5046                 u8 revision_id;
5047                 pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id);
5048
5049                 /* take phy and nic out of low power mode */
5050                 powerstate = readl(base + NvRegPowerState2);
5051                 powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5052                 if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
5053                      id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
5054                     revision_id >= 0xA3)
5055                         powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5056                 writel(powerstate, base + NvRegPowerState2);
5057         }
5058
5059         if (np->desc_ver == DESC_VER_1) {
5060                 np->tx_flags = NV_TX_VALID;
5061         } else {
5062                 np->tx_flags = NV_TX2_VALID;
5063         }
5064         if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT) {
5065                 np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5066                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5067                         np->msi_flags |= 0x0003;
5068         } else {
5069                 np->irqmask = NVREG_IRQMASK_CPU;
5070                 if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5071                         np->msi_flags |= 0x0001;
5072         }
5073
5074         if (id->driver_data & DEV_NEED_TIMERIRQ)
5075                 np->irqmask |= NVREG_IRQ_TIMER;
5076         if (id->driver_data & DEV_NEED_LINKTIMER) {
5077                 dprintk(KERN_INFO "%s: link timer on.\n", pci_name(pci_dev));
5078                 np->need_linktimer = 1;
5079                 np->link_timeout = jiffies + LINK_TIMEOUT;
5080         } else {
5081                 dprintk(KERN_INFO "%s: link timer off.\n", pci_name(pci_dev));
5082                 np->need_linktimer = 0;
5083         }
5084
5085         /* clear phy state and temporarily halt phy interrupts */
5086         writel(0, base + NvRegMIIMask);
5087         phystate = readl(base + NvRegAdapterControl);
5088         if (phystate & NVREG_ADAPTCTL_RUNNING) {
5089                 phystate_orig = 1;
5090                 phystate &= ~NVREG_ADAPTCTL_RUNNING;
5091                 writel(phystate, base + NvRegAdapterControl);
5092         }
5093         writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
5094
5095         if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5096                 /* management unit running on the mac? */
5097                 if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) {
5098                         np->mac_in_use = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST;
5099                         dprintk(KERN_INFO "%s: mgmt unit is running. mac in use %x.\n", pci_name(pci_dev), np->mac_in_use);
5100                         for (i = 0; i < 5000; i++) {
5101                                 msleep(1);
5102                                 if (nv_mgmt_acquire_sema(dev)) {
5103                                         /* management unit setup the phy already? */
5104                                         if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5105                                             NVREG_XMITCTL_SYNC_PHY_INIT) {
5106                                                 /* phy is inited by mgmt unit */
5107                                                 phyinitialized = 1;
5108                                                 dprintk(KERN_INFO "%s: Phy already initialized by mgmt unit.\n", pci_name(pci_dev));
5109                                         } else {
5110                                                 /* we need to init the phy */
5111                                         }
5112                                         break;
5113                                 }
5114                         }
5115                 }
5116         }
5117
5118         /* find a suitable phy */
5119         for (i = 1; i <= 32; i++) {
5120                 int id1, id2;
5121                 int phyaddr = i & 0x1F;
5122
5123                 spin_lock_irq(&np->lock);
5124                 id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5125                 spin_unlock_irq(&np->lock);
5126                 if (id1 < 0 || id1 == 0xffff)
5127                         continue;
5128                 spin_lock_irq(&np->lock);
5129                 id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5130                 spin_unlock_irq(&np->lock);
5131                 if (id2 < 0 || id2 == 0xffff)
5132                         continue;
5133
5134                 np->phy_model = id2 & PHYID2_MODEL_MASK;
5135                 id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5136                 id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5137                 dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
5138                         pci_name(pci_dev), id1, id2, phyaddr);
5139                 np->phyaddr = phyaddr;
5140                 np->phy_oui = id1 | id2;
5141                 break;
5142         }
5143         if (i == 33) {
5144                 printk(KERN_INFO "%s: open: Could not find a valid PHY.\n",
5145                        pci_name(pci_dev));
5146                 goto out_error;
5147         }
5148
5149         if (!phyinitialized) {
5150                 /* reset it */
5151                 phy_init(dev);
5152         } else {
5153                 /* see if it is a gigabit phy */
5154                 u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5155                 if (mii_status & PHY_GIGABIT) {
5156                         np->gigabit = PHY_GIGABIT;
5157                 }
5158         }
5159
5160         /* set default link speed settings */
5161         np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5162         np->duplex = 0;
5163         np->autoneg = 1;
5164
5165         err = register_netdev(dev);
5166         if (err) {
5167                 printk(KERN_INFO "forcedeth: unable to register netdev: %d\n", err);
5168                 goto out_error;
5169         }
5170         printk(KERN_INFO "%s: forcedeth.c: subsystem: %05x:%04x bound to %s\n",
5171                         dev->name, pci_dev->subsystem_vendor, pci_dev->subsystem_device,
5172                         pci_name(pci_dev));
5173
5174         return 0;
5175
5176 out_error:
5177         if (phystate_orig)
5178                 writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
5179         pci_set_drvdata(pci_dev, NULL);
5180 out_freering:
5181         free_rings(dev);
5182 out_unmap:
5183         iounmap(get_hwbase(dev));
5184 out_relreg:
5185         pci_release_regions(pci_dev);
5186 out_disable:
5187         pci_disable_device(pci_dev);
5188 out_free:
5189         free_netdev(dev);
5190 out:
5191         return err;
5192 }
5193
5194 static void __devexit nv_remove(struct pci_dev *pci_dev)
5195 {
5196         struct net_device *dev = pci_get_drvdata(pci_dev);
5197         struct fe_priv *np = netdev_priv(dev);
5198         u8 __iomem *base = get_hwbase(dev);
5199
5200         unregister_netdev(dev);
5201
5202         /* special op: write back the misordered MAC address - otherwise
5203          * the next nv_probe would see a wrong address.
5204          */
5205         writel(np->orig_mac[0], base + NvRegMacAddrA);
5206         writel(np->orig_mac[1], base + NvRegMacAddrB);
5207
5208         /* free all structures */
5209         free_rings(dev);
5210         iounmap(get_hwbase(dev));
5211         pci_release_regions(pci_dev);
5212         pci_disable_device(pci_dev);
5213         free_netdev(dev);
5214         pci_set_drvdata(pci_dev, NULL);
5215 }
5216
5217 #ifdef CONFIG_PM
5218 static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
5219 {
5220         struct net_device *dev = pci_get_drvdata(pdev);
5221         struct fe_priv *np = netdev_priv(dev);
5222
5223         if (!netif_running(dev))
5224                 goto out;
5225
5226         netif_device_detach(dev);
5227
5228         // Gross.
5229         nv_close(dev);
5230
5231         pci_save_state(pdev);
5232         pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
5233         pci_set_power_state(pdev, pci_choose_state(pdev, state));
5234 out:
5235         return 0;
5236 }
5237
5238 static int nv_resume(struct pci_dev *pdev)
5239 {
5240         struct net_device *dev = pci_get_drvdata(pdev);
5241         int rc = 0;
5242
5243         if (!netif_running(dev))
5244                 goto out;
5245
5246         netif_device_attach(dev);
5247
5248         pci_set_power_state(pdev, PCI_D0);
5249         pci_restore_state(pdev);
5250         pci_enable_wake(pdev, PCI_D0, 0);
5251
5252         rc = nv_open(dev);
5253 out:
5254         return rc;
5255 }
5256 #else
5257 #define nv_suspend NULL
5258 #define nv_resume NULL
5259 #endif /* CONFIG_PM */
5260
5261 static struct pci_device_id pci_tbl[] = {
5262         {       /* nForce Ethernet Controller */
5263                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
5264                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5265         },
5266         {       /* nForce2 Ethernet Controller */
5267                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
5268                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5269         },
5270         {       /* nForce3 Ethernet Controller */
5271                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
5272                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
5273         },
5274         {       /* nForce3 Ethernet Controller */
5275                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
5276                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5277         },
5278         {       /* nForce3 Ethernet Controller */
5279                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
5280                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5281         },
5282         {       /* nForce3 Ethernet Controller */
5283                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
5284                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5285         },
5286         {       /* nForce3 Ethernet Controller */
5287                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
5288                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
5289         },
5290         {       /* CK804 Ethernet Controller */
5291                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
5292                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
5293         },
5294         {       /* CK804 Ethernet Controller */
5295                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
5296                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
5297         },
5298         {       /* MCP04 Ethernet Controller */
5299                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
5300                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
5301         },
5302         {       /* MCP04 Ethernet Controller */
5303                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
5304                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
5305         },
5306         {       /* MCP51 Ethernet Controller */
5307                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
5308                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
5309         },
5310         {       /* MCP51 Ethernet Controller */
5311                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
5312                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL,
5313         },
5314         {       /* MCP55 Ethernet Controller */
5315                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
5316                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5317         },
5318         {       /* MCP55 Ethernet Controller */
5319                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
5320                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5321         },
5322         {       /* MCP61 Ethernet Controller */
5323                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_16),
5324                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5325         },
5326         {       /* MCP61 Ethernet Controller */
5327                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_17),
5328                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5329         },
5330         {       /* MCP61 Ethernet Controller */
5331                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_18),
5332                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5333         },
5334         {       /* MCP61 Ethernet Controller */
5335                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_19),
5336                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5337         },
5338         {       /* MCP65 Ethernet Controller */
5339                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_20),
5340                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5341         },
5342         {       /* MCP65 Ethernet Controller */
5343                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_21),
5344                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5345         },
5346         {       /* MCP65 Ethernet Controller */
5347                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_22),
5348                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5349         },
5350         {       /* MCP65 Ethernet Controller */
5351                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_23),
5352                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5353         },
5354         {       /* MCP67 Ethernet Controller */
5355                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_24),
5356                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5357         },
5358         {       /* MCP67 Ethernet Controller */
5359                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_25),
5360                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5361         },
5362         {       /* MCP67 Ethernet Controller */
5363                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_26),
5364                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5365         },
5366         {       /* MCP67 Ethernet Controller */
5367                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_27),
5368                 .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX|DEV_HAS_STATISTICS|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT,
5369         },
5370         {0,},
5371 };
5372
5373 static struct pci_driver driver = {
5374         .name = "forcedeth",
5375         .id_table = pci_tbl,
5376         .probe = nv_probe,
5377         .remove = __devexit_p(nv_remove),
5378         .suspend = nv_suspend,
5379         .resume = nv_resume,
5380 };
5381
5382 static int __init init_nic(void)
5383 {
5384         printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION);
5385         return pci_register_driver(&driver);
5386 }
5387
5388 static void __exit exit_nic(void)
5389 {
5390         pci_unregister_driver(&driver);
5391 }
5392
5393 module_param(max_interrupt_work, int, 0);
5394 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
5395 module_param(optimization_mode, int, 0);
5396 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.");
5397 module_param(poll_interval, int, 0);
5398 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.");
5399 module_param(msi, int, 0);
5400 MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
5401 module_param(msix, int, 0);
5402 MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
5403 module_param(dma_64bit, int, 0);
5404 MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
5405
5406 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
5407 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
5408 MODULE_LICENSE("GPL");
5409
5410 MODULE_DEVICE_TABLE(pci, pci_tbl);
5411
5412 module_init(init_nic);
5413 module_exit(exit_nic);