1/*
   2 * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
   3 *
   4 * Note: This driver is a cleanroom reimplementation based on reverse
   5 *      engineered documentation written by Carl-Daniel Hailfinger
   6 *      and Andrew de Quincey.
   7 *
   8 * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
   9 * trademarks of NVIDIA Corporation in the United States and other
  10 * countries.
  11 *
  12 * Copyright (C) 2003,4,5 Manfred Spraul
  13 * Copyright (C) 2004 Andrew de Quincey (wol support)
  14 * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  15 *		IRQ rate fixes, bigendian fixes, cleanups, verification)
  16 * Copyright (c) 2004,2005,2006,2007,2008,2009 NVIDIA Corporation
  17 *
  18 * This program is free software; you can redistribute it and/or modify
  19 * it under the terms of the GNU General Public License as published by
  20 * the Free Software Foundation; either version 2 of the License, or
  21 * (at your option) any later version.
  22 *
  23 * This program is distributed in the hope that it will be useful,
  24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26 * GNU General Public License for more details.
  27 *
  28 * You should have received a copy of the GNU General Public License
  29 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  30 *
  31 * Known bugs:
  32 * We suspect that on some hardware no TX done interrupts are generated.
  33 * This means recovery from netif_stop_queue only happens if the hw timer
  34 * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
  35 * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
  36 * If your hardware reliably generates tx done interrupts, then you can remove
  37 * DEV_NEED_TIMERIRQ from the driver_data flags.
  38 * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  39 * superfluous timer interrupts from the nic.
  40 */
  41
  42#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  43
  44#define FORCEDETH_VERSION		"0.64"
  45#define DRV_NAME			"forcedeth"
  46
  47#include <linux/module.h>
  48#include <linux/types.h>
  49#include <linux/pci.h>
  50#include <linux/interrupt.h>
  51#include <linux/netdevice.h>
  52#include <linux/etherdevice.h>
  53#include <linux/delay.h>
  54#include <linux/sched.h>
  55#include <linux/spinlock.h>
  56#include <linux/ethtool.h>
  57#include <linux/timer.h>
  58#include <linux/skbuff.h>
  59#include <linux/mii.h>
  60#include <linux/random.h>
  61#include <linux/if_vlan.h>
  62#include <linux/dma-mapping.h>
  63#include <linux/slab.h>
  64#include <linux/uaccess.h>
  65#include <linux/prefetch.h>
  66#include <linux/u64_stats_sync.h>
  67#include <linux/io.h>
  68
  69#include <asm/irq.h>
  70
  71#define TX_WORK_PER_LOOP  64
  72#define RX_WORK_PER_LOOP  64
  73
  74/*
  75 * Hardware access:
  76 */
  77
  78#define DEV_NEED_TIMERIRQ          0x0000001  /* set the timer irq flag in the irq mask */
  79#define DEV_NEED_LINKTIMER         0x0000002  /* poll link settings. Relies on the timer irq */
  80#define DEV_HAS_LARGEDESC          0x0000004  /* device supports jumbo frames and needs packet format 2 */
  81#define DEV_HAS_HIGH_DMA           0x0000008  /* device supports 64bit dma */
  82#define DEV_HAS_CHECKSUM           0x0000010  /* device supports tx and rx checksum offloads */
  83#define DEV_HAS_VLAN               0x0000020  /* device supports vlan tagging and striping */
  84#define DEV_HAS_MSI                0x0000040  /* device supports MSI */
  85#define DEV_HAS_MSI_X              0x0000080  /* device supports MSI-X */
  86#define DEV_HAS_POWER_CNTRL        0x0000100  /* device supports power savings */
  87#define DEV_HAS_STATISTICS_V1      0x0000200  /* device supports hw statistics version 1 */
  88#define DEV_HAS_STATISTICS_V2      0x0000400  /* device supports hw statistics version 2 */
  89#define DEV_HAS_STATISTICS_V3      0x0000800  /* device supports hw statistics version 3 */
  90#define DEV_HAS_STATISTICS_V12     0x0000600  /* device supports hw statistics version 1 and 2 */
  91#define DEV_HAS_STATISTICS_V123    0x0000e00  /* device supports hw statistics version 1, 2, and 3 */
  92#define DEV_HAS_TEST_EXTENDED      0x0001000  /* device supports extended diagnostic test */
  93#define DEV_HAS_MGMT_UNIT          0x0002000  /* device supports management unit */
  94#define DEV_HAS_CORRECT_MACADDR    0x0004000  /* device supports correct mac address order */
  95#define DEV_HAS_COLLISION_FIX      0x0008000  /* device supports tx collision fix */
  96#define DEV_HAS_PAUSEFRAME_TX_V1   0x0010000  /* device supports tx pause frames version 1 */
  97#define DEV_HAS_PAUSEFRAME_TX_V2   0x0020000  /* device supports tx pause frames version 2 */
  98#define DEV_HAS_PAUSEFRAME_TX_V3   0x0040000  /* device supports tx pause frames version 3 */
  99#define DEV_NEED_TX_LIMIT          0x0080000  /* device needs to limit tx */
 100#define DEV_NEED_TX_LIMIT2         0x0180000  /* device needs to limit tx, expect for some revs */
 101#define DEV_HAS_GEAR_MODE          0x0200000  /* device supports gear mode */
 102#define DEV_NEED_PHY_INIT_FIX      0x0400000  /* device needs specific phy workaround */
 103#define DEV_NEED_LOW_POWER_FIX     0x0800000  /* device needs special power up workaround */
 104#define DEV_NEED_MSI_FIX           0x1000000  /* device needs msi workaround */
 105
 106enum {
 107	NvRegIrqStatus = 0x000,
 108#define NVREG_IRQSTAT_MIIEVENT	0x040
 109#define NVREG_IRQSTAT_MASK		0x83ff
 110	NvRegIrqMask = 0x004,
 111#define NVREG_IRQ_RX_ERROR		0x0001
 112#define NVREG_IRQ_RX			0x0002
 113#define NVREG_IRQ_RX_NOBUF		0x0004
 114#define NVREG_IRQ_TX_ERR		0x0008
 115#define NVREG_IRQ_TX_OK			0x0010
 116#define NVREG_IRQ_TIMER			0x0020
 117#define NVREG_IRQ_LINK			0x0040
 118#define NVREG_IRQ_RX_FORCED		0x0080
 119#define NVREG_IRQ_TX_FORCED		0x0100
 120#define NVREG_IRQ_RECOVER_ERROR		0x8200
 121#define NVREG_IRQMASK_THROUGHPUT	0x00df
 122#define NVREG_IRQMASK_CPU		0x0060
 123#define NVREG_IRQ_TX_ALL		(NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
 124#define NVREG_IRQ_RX_ALL		(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
 125#define NVREG_IRQ_OTHER			(NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
 126
 127	NvRegUnknownSetupReg6 = 0x008,
 128#define NVREG_UNKSETUP6_VAL		3
 129
 130/*
 131 * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
 132 * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
 133 */
 134	NvRegPollingInterval = 0x00c,
 135#define NVREG_POLL_DEFAULT_THROUGHPUT	65535 /* backup tx cleanup if loop max reached */
 136#define NVREG_POLL_DEFAULT_CPU	13
 137	NvRegMSIMap0 = 0x020,
 138	NvRegMSIMap1 = 0x024,
 139	NvRegMSIIrqMask = 0x030,
 140#define NVREG_MSI_VECTOR_0_ENABLED 0x01
 141	NvRegMisc1 = 0x080,
 142#define NVREG_MISC1_PAUSE_TX	0x01
 143#define NVREG_MISC1_HD		0x02
 144#define NVREG_MISC1_FORCE	0x3b0f3c
 145
 146	NvRegMacReset = 0x34,
 147#define NVREG_MAC_RESET_ASSERT	0x0F3
 148	NvRegTransmitterControl = 0x084,
 149#define NVREG_XMITCTL_START	0x01
 150#define NVREG_XMITCTL_MGMT_ST	0x40000000
 151#define NVREG_XMITCTL_SYNC_MASK		0x000f0000
 152#define NVREG_XMITCTL_SYNC_NOT_READY	0x0
 153#define NVREG_XMITCTL_SYNC_PHY_INIT	0x00040000
 154#define NVREG_XMITCTL_MGMT_SEMA_MASK	0x00000f00
 155#define NVREG_XMITCTL_MGMT_SEMA_FREE	0x0
 156#define NVREG_XMITCTL_HOST_SEMA_MASK	0x0000f000
 157#define NVREG_XMITCTL_HOST_SEMA_ACQ	0x0000f000
 158#define NVREG_XMITCTL_HOST_LOADED	0x00004000
 159#define NVREG_XMITCTL_TX_PATH_EN	0x01000000
 160#define NVREG_XMITCTL_DATA_START	0x00100000
 161#define NVREG_XMITCTL_DATA_READY	0x00010000
 162#define NVREG_XMITCTL_DATA_ERROR	0x00020000
 163	NvRegTransmitterStatus = 0x088,
 164#define NVREG_XMITSTAT_BUSY	0x01
 165
 166	NvRegPacketFilterFlags = 0x8c,
 167#define NVREG_PFF_PAUSE_RX	0x08
 168#define NVREG_PFF_ALWAYS	0x7F0000
 169#define NVREG_PFF_PROMISC	0x80
 170#define NVREG_PFF_MYADDR	0x20
 171#define NVREG_PFF_LOOPBACK	0x10
 172
 173	NvRegOffloadConfig = 0x90,
 174#define NVREG_OFFLOAD_HOMEPHY	0x601
 175#define NVREG_OFFLOAD_NORMAL	RX_NIC_BUFSIZE
 176	NvRegReceiverControl = 0x094,
 177#define NVREG_RCVCTL_START	0x01
 178#define NVREG_RCVCTL_RX_PATH_EN	0x01000000
 179	NvRegReceiverStatus = 0x98,
 180#define NVREG_RCVSTAT_BUSY	0x01
 181
 182	NvRegSlotTime = 0x9c,
 183#define NVREG_SLOTTIME_LEGBF_ENABLED	0x80000000
 184#define NVREG_SLOTTIME_10_100_FULL	0x00007f00
 185#define NVREG_SLOTTIME_1000_FULL	0x0003ff00
 186#define NVREG_SLOTTIME_HALF		0x0000ff00
 187#define NVREG_SLOTTIME_DEFAULT		0x00007f00
 188#define NVREG_SLOTTIME_MASK		0x000000ff
 189
 190	NvRegTxDeferral = 0xA0,
 191#define NVREG_TX_DEFERRAL_DEFAULT		0x15050f
 192#define NVREG_TX_DEFERRAL_RGMII_10_100		0x16070f
 193#define NVREG_TX_DEFERRAL_RGMII_1000		0x14050f
 194#define NVREG_TX_DEFERRAL_RGMII_STRETCH_10	0x16190f
 195#define NVREG_TX_DEFERRAL_RGMII_STRETCH_100	0x16300f
 196#define NVREG_TX_DEFERRAL_MII_STRETCH		0x152000
 197	NvRegRxDeferral = 0xA4,
 198#define NVREG_RX_DEFERRAL_DEFAULT	0x16
 199	NvRegMacAddrA = 0xA8,
 200	NvRegMacAddrB = 0xAC,
 201	NvRegMulticastAddrA = 0xB0,
 202#define NVREG_MCASTADDRA_FORCE	0x01
 203	NvRegMulticastAddrB = 0xB4,
 204	NvRegMulticastMaskA = 0xB8,
 205#define NVREG_MCASTMASKA_NONE		0xffffffff
 206	NvRegMulticastMaskB = 0xBC,
 207#define NVREG_MCASTMASKB_NONE		0xffff
 208
 209	NvRegPhyInterface = 0xC0,
 210#define PHY_RGMII		0x10000000
 211	NvRegBackOffControl = 0xC4,
 212#define NVREG_BKOFFCTRL_DEFAULT			0x70000000
 213#define NVREG_BKOFFCTRL_SEED_MASK		0x000003ff
 214#define NVREG_BKOFFCTRL_SELECT			24
 215#define NVREG_BKOFFCTRL_GEAR			12
 216
 217	NvRegTxRingPhysAddr = 0x100,
 218	NvRegRxRingPhysAddr = 0x104,
 219	NvRegRingSizes = 0x108,
 220#define NVREG_RINGSZ_TXSHIFT 0
 221#define NVREG_RINGSZ_RXSHIFT 16
 222	NvRegTransmitPoll = 0x10c,
 223#define NVREG_TRANSMITPOLL_MAC_ADDR_REV	0x00008000
 224	NvRegLinkSpeed = 0x110,
 225#define NVREG_LINKSPEED_FORCE 0x10000
 226#define NVREG_LINKSPEED_10	1000
 227#define NVREG_LINKSPEED_100	100
 228#define NVREG_LINKSPEED_1000	50
 229#define NVREG_LINKSPEED_MASK	(0xFFF)
 230	NvRegUnknownSetupReg5 = 0x130,
 231#define NVREG_UNKSETUP5_BIT31	(1<<31)
 232	NvRegTxWatermark = 0x13c,
 233#define NVREG_TX_WM_DESC1_DEFAULT	0x0200010
 234#define NVREG_TX_WM_DESC2_3_DEFAULT	0x1e08000
 235#define NVREG_TX_WM_DESC2_3_1000	0xfe08000
 236	NvRegTxRxControl = 0x144,
 237#define NVREG_TXRXCTL_KICK	0x0001
 238#define NVREG_TXRXCTL_BIT1	0x0002
 239#define NVREG_TXRXCTL_BIT2	0x0004
 240#define NVREG_TXRXCTL_IDLE	0x0008
 241#define NVREG_TXRXCTL_RESET	0x0010
 242#define NVREG_TXRXCTL_RXCHECK	0x0400
 243#define NVREG_TXRXCTL_DESC_1	0
 244#define NVREG_TXRXCTL_DESC_2	0x002100
 245#define NVREG_TXRXCTL_DESC_3	0xc02200
 246#define NVREG_TXRXCTL_VLANSTRIP 0x00040
 247#define NVREG_TXRXCTL_VLANINS	0x00080
 248	NvRegTxRingPhysAddrHigh = 0x148,
 249	NvRegRxRingPhysAddrHigh = 0x14C,
 250	NvRegTxPauseFrame = 0x170,
 251#define NVREG_TX_PAUSEFRAME_DISABLE	0x0fff0080
 252#define NVREG_TX_PAUSEFRAME_ENABLE_V1	0x01800010
 253#define NVREG_TX_PAUSEFRAME_ENABLE_V2	0x056003f0
 254#define NVREG_TX_PAUSEFRAME_ENABLE_V3	0x09f00880
 255	NvRegTxPauseFrameLimit = 0x174,
 256#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE	0x00010000
 257	NvRegMIIStatus = 0x180,
 258#define NVREG_MIISTAT_ERROR		0x0001
 259#define NVREG_MIISTAT_LINKCHANGE	0x0008
 260#define NVREG_MIISTAT_MASK_RW		0x0007
 261#define NVREG_MIISTAT_MASK_ALL		0x000f
 262	NvRegMIIMask = 0x184,
 263#define NVREG_MII_LINKCHANGE		0x0008
 264
 265	NvRegAdapterControl = 0x188,
 266#define NVREG_ADAPTCTL_START	0x02
 267#define NVREG_ADAPTCTL_LINKUP	0x04
 268#define NVREG_ADAPTCTL_PHYVALID	0x40000
 269#define NVREG_ADAPTCTL_RUNNING	0x100000
 270#define NVREG_ADAPTCTL_PHYSHIFT	24
 271	NvRegMIISpeed = 0x18c,
 272#define NVREG_MIISPEED_BIT8	(1<<8)
 273#define NVREG_MIIDELAY	5
 274	NvRegMIIControl = 0x190,
 275#define NVREG_MIICTL_INUSE	0x08000
 276#define NVREG_MIICTL_WRITE	0x00400
 277#define NVREG_MIICTL_ADDRSHIFT	5
 278	NvRegMIIData = 0x194,
 279	NvRegTxUnicast = 0x1a0,
 280	NvRegTxMulticast = 0x1a4,
 281	NvRegTxBroadcast = 0x1a8,
 282	NvRegWakeUpFlags = 0x200,
 283#define NVREG_WAKEUPFLAGS_VAL		0x7770
 284#define NVREG_WAKEUPFLAGS_BUSYSHIFT	24
 285#define NVREG_WAKEUPFLAGS_ENABLESHIFT	16
 286#define NVREG_WAKEUPFLAGS_D3SHIFT	12
 287#define NVREG_WAKEUPFLAGS_D2SHIFT	8
 288#define NVREG_WAKEUPFLAGS_D1SHIFT	4
 289#define NVREG_WAKEUPFLAGS_D0SHIFT	0
 290#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT		0x01
 291#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT	0x02
 292#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE	0x04
 293#define NVREG_WAKEUPFLAGS_ENABLE	0x1111
 294
 295	NvRegMgmtUnitGetVersion = 0x204,
 296#define NVREG_MGMTUNITGETVERSION	0x01
 297	NvRegMgmtUnitVersion = 0x208,
 298#define NVREG_MGMTUNITVERSION		0x08
 299	NvRegPowerCap = 0x268,
 300#define NVREG_POWERCAP_D3SUPP	(1<<30)
 301#define NVREG_POWERCAP_D2SUPP	(1<<26)
 302#define NVREG_POWERCAP_D1SUPP	(1<<25)
 303	NvRegPowerState = 0x26c,
 304#define NVREG_POWERSTATE_POWEREDUP	0x8000
 305#define NVREG_POWERSTATE_VALID		0x0100
 306#define NVREG_POWERSTATE_MASK		0x0003
 307#define NVREG_POWERSTATE_D0		0x0000
 308#define NVREG_POWERSTATE_D1		0x0001
 309#define NVREG_POWERSTATE_D2		0x0002
 310#define NVREG_POWERSTATE_D3		0x0003
 311	NvRegMgmtUnitControl = 0x278,
 312#define NVREG_MGMTUNITCONTROL_INUSE	0x20000
 313	NvRegTxCnt = 0x280,
 314	NvRegTxZeroReXmt = 0x284,
 315	NvRegTxOneReXmt = 0x288,
 316	NvRegTxManyReXmt = 0x28c,
 317	NvRegTxLateCol = 0x290,
 318	NvRegTxUnderflow = 0x294,
 319	NvRegTxLossCarrier = 0x298,
 320	NvRegTxExcessDef = 0x29c,
 321	NvRegTxRetryErr = 0x2a0,
 322	NvRegRxFrameErr = 0x2a4,
 323	NvRegRxExtraByte = 0x2a8,
 324	NvRegRxLateCol = 0x2ac,
 325	NvRegRxRunt = 0x2b0,
 326	NvRegRxFrameTooLong = 0x2b4,
 327	NvRegRxOverflow = 0x2b8,
 328	NvRegRxFCSErr = 0x2bc,
 329	NvRegRxFrameAlignErr = 0x2c0,
 330	NvRegRxLenErr = 0x2c4,
 331	NvRegRxUnicast = 0x2c8,
 332	NvRegRxMulticast = 0x2cc,
 333	NvRegRxBroadcast = 0x2d0,
 334	NvRegTxDef = 0x2d4,
 335	NvRegTxFrame = 0x2d8,
 336	NvRegRxCnt = 0x2dc,
 337	NvRegTxPause = 0x2e0,
 338	NvRegRxPause = 0x2e4,
 339	NvRegRxDropFrame = 0x2e8,
 340	NvRegVlanControl = 0x300,
 341#define NVREG_VLANCONTROL_ENABLE	0x2000
 342	NvRegMSIXMap0 = 0x3e0,
 343	NvRegMSIXMap1 = 0x3e4,
 344	NvRegMSIXIrqStatus = 0x3f0,
 345
 346	NvRegPowerState2 = 0x600,
 347#define NVREG_POWERSTATE2_POWERUP_MASK		0x0F15
 348#define NVREG_POWERSTATE2_POWERUP_REV_A3	0x0001
 349#define NVREG_POWERSTATE2_PHY_RESET		0x0004
 350#define NVREG_POWERSTATE2_GATE_CLOCKS		0x0F00
 351};
 352
 353/* Big endian: should work, but is untested */
 354struct ring_desc {
 355	__le32 buf;
 356	__le32 flaglen;
 357};
 358
 359struct ring_desc_ex {
 360	__le32 bufhigh;
 361	__le32 buflow;
 362	__le32 txvlan;
 363	__le32 flaglen;
 364};
 365
 366union ring_type {
 367	struct ring_desc *orig;
 368	struct ring_desc_ex *ex;
 369};
 370
 371#define FLAG_MASK_V1 0xffff0000
 372#define FLAG_MASK_V2 0xffffc000
 373#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
 374#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
 375
 376#define NV_TX_LASTPACKET	(1<<16)
 377#define NV_TX_RETRYERROR	(1<<19)
 378#define NV_TX_RETRYCOUNT_MASK	(0xF<<20)
 379#define NV_TX_FORCED_INTERRUPT	(1<<24)
 380#define NV_TX_DEFERRED		(1<<26)
 381#define NV_TX_CARRIERLOST	(1<<27)
 382#define NV_TX_LATECOLLISION	(1<<28)
 383#define NV_TX_UNDERFLOW		(1<<29)
 384#define NV_TX_ERROR		(1<<30)
 385#define NV_TX_VALID		(1<<31)
 386
 387#define NV_TX2_LASTPACKET	(1<<29)
 388#define NV_TX2_RETRYERROR	(1<<18)
 389#define NV_TX2_RETRYCOUNT_MASK	(0xF<<19)
 390#define NV_TX2_FORCED_INTERRUPT	(1<<30)
 391#define NV_TX2_DEFERRED		(1<<25)
 392#define NV_TX2_CARRIERLOST	(1<<26)
 393#define NV_TX2_LATECOLLISION	(1<<27)
 394#define NV_TX2_UNDERFLOW	(1<<28)
 395/* error and valid are the same for both */
 396#define NV_TX2_ERROR		(1<<30)
 397#define NV_TX2_VALID		(1<<31)
 398#define NV_TX2_TSO		(1<<28)
 399#define NV_TX2_TSO_SHIFT	14
 400#define NV_TX2_TSO_MAX_SHIFT	14
 401#define NV_TX2_TSO_MAX_SIZE	(1<<NV_TX2_TSO_MAX_SHIFT)
 402#define NV_TX2_CHECKSUM_L3	(1<<27)
 403#define NV_TX2_CHECKSUM_L4	(1<<26)
 404
 405#define NV_TX3_VLAN_TAG_PRESENT (1<<18)
 406
 407#define NV_RX_DESCRIPTORVALID	(1<<16)
 408#define NV_RX_MISSEDFRAME	(1<<17)
 409#define NV_RX_SUBTRACT1		(1<<18)
 410#define NV_RX_ERROR1		(1<<23)
 411#define NV_RX_ERROR2		(1<<24)
 412#define NV_RX_ERROR3		(1<<25)
 413#define NV_RX_ERROR4		(1<<26)
 414#define NV_RX_CRCERR		(1<<27)
 415#define NV_RX_OVERFLOW		(1<<28)
 416#define NV_RX_FRAMINGERR	(1<<29)
 417#define NV_RX_ERROR		(1<<30)
 418#define NV_RX_AVAIL		(1<<31)
 419#define NV_RX_ERROR_MASK	(NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
 420
 421#define NV_RX2_CHECKSUMMASK	(0x1C000000)
 422#define NV_RX2_CHECKSUM_IP	(0x10000000)
 423#define NV_RX2_CHECKSUM_IP_TCP	(0x14000000)
 424#define NV_RX2_CHECKSUM_IP_UDP	(0x18000000)
 425#define NV_RX2_DESCRIPTORVALID	(1<<29)
 426#define NV_RX2_SUBTRACT1	(1<<25)
 427#define NV_RX2_ERROR1		(1<<18)
 428#define NV_RX2_ERROR2		(1<<19)
 429#define NV_RX2_ERROR3		(1<<20)
 430#define NV_RX2_ERROR4		(1<<21)
 431#define NV_RX2_CRCERR		(1<<22)
 432#define NV_RX2_OVERFLOW		(1<<23)
 433#define NV_RX2_FRAMINGERR	(1<<24)
 434/* error and avail are the same for both */
 435#define NV_RX2_ERROR		(1<<30)
 436#define NV_RX2_AVAIL		(1<<31)
 437#define NV_RX2_ERROR_MASK	(NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
 438
 439#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
 440#define NV_RX3_VLAN_TAG_MASK	(0x0000FFFF)
 441
 442/* Miscellaneous hardware related defines: */
 443#define NV_PCI_REGSZ_VER1	0x270
 444#define NV_PCI_REGSZ_VER2	0x2d4
 445#define NV_PCI_REGSZ_VER3	0x604
 446#define NV_PCI_REGSZ_MAX	0x604
 447
 448/* various timeout delays: all in usec */
 449#define NV_TXRX_RESET_DELAY	4
 450#define NV_TXSTOP_DELAY1	10
 451#define NV_TXSTOP_DELAY1MAX	500000
 452#define NV_TXSTOP_DELAY2	100
 453#define NV_RXSTOP_DELAY1	10
 454#define NV_RXSTOP_DELAY1MAX	500000
 455#define NV_RXSTOP_DELAY2	100
 456#define NV_SETUP5_DELAY		5
 457#define NV_SETUP5_DELAYMAX	50000
 458#define NV_POWERUP_DELAY	5
 459#define NV_POWERUP_DELAYMAX	5000
 460#define NV_MIIBUSY_DELAY	50
 461#define NV_MIIPHY_DELAY	10
 462#define NV_MIIPHY_DELAYMAX	10000
 463#define NV_MAC_RESET_DELAY	64
 464
 465#define NV_WAKEUPPATTERNS	5
 466#define NV_WAKEUPMASKENTRIES	4
 467
 468/* General driver defaults */
 469#define NV_WATCHDOG_TIMEO	(5*HZ)
 470
 471#define RX_RING_DEFAULT		512
 472#define TX_RING_DEFAULT		256
 473#define RX_RING_MIN		128
 474#define TX_RING_MIN		64
 475#define RING_MAX_DESC_VER_1	1024
 476#define RING_MAX_DESC_VER_2_3	16384
 477
 478/* rx/tx mac addr + type + vlan + align + slack*/
 479#define NV_RX_HEADERS		(64)
 480/* even more slack. */
 481#define NV_RX_ALLOC_PAD		(64)
 482
 483/* maximum mtu size */
 484#define NV_PKTLIMIT_1	ETH_DATA_LEN	/* hard limit not known */
 485#define NV_PKTLIMIT_2	9100	/* Actual limit according to NVidia: 9202 */
 486
 487#define OOM_REFILL	(1+HZ/20)
 488#define POLL_WAIT	(1+HZ/100)
 489#define LINK_TIMEOUT	(3*HZ)
 490#define STATS_INTERVAL	(10*HZ)
 491
 492/*
 493 * desc_ver values:
 494 * The nic supports three different descriptor types:
 495 * - DESC_VER_1: Original
 496 * - DESC_VER_2: support for jumbo frames.
 497 * - DESC_VER_3: 64-bit format.
 498 */
 499#define DESC_VER_1	1
 500#define DESC_VER_2	2
 501#define DESC_VER_3	3
 502
 503/* PHY defines */
 504#define PHY_OUI_MARVELL		0x5043
 505#define PHY_OUI_CICADA		0x03f1
 506#define PHY_OUI_VITESSE		0x01c1
 507#define PHY_OUI_REALTEK		0x0732
 508#define PHY_OUI_REALTEK2	0x0020
 509#define PHYID1_OUI_MASK	0x03ff
 510#define PHYID1_OUI_SHFT	6
 511#define PHYID2_OUI_MASK	0xfc00
 512#define PHYID2_OUI_SHFT	10
 513#define PHYID2_MODEL_MASK		0x03f0
 514#define PHY_MODEL_REALTEK_8211		0x0110
 515#define PHY_REV_MASK			0x0001
 516#define PHY_REV_REALTEK_8211B		0x0000
 517#define PHY_REV_REALTEK_8211C		0x0001
 518#define PHY_MODEL_REALTEK_8201		0x0200
 519#define PHY_MODEL_MARVELL_E3016		0x0220
 520#define PHY_MARVELL_E3016_INITMASK	0x0300
 521#define PHY_CICADA_INIT1	0x0f000
 522#define PHY_CICADA_INIT2	0x0e00
 523#define PHY_CICADA_INIT3	0x01000
 524#define PHY_CICADA_INIT4	0x0200
 525#define PHY_CICADA_INIT5	0x0004
 526#define PHY_CICADA_INIT6	0x02000
 527#define PHY_VITESSE_INIT_REG1	0x1f
 528#define PHY_VITESSE_INIT_REG2	0x10
 529#define PHY_VITESSE_INIT_REG3	0x11
 530#define PHY_VITESSE_INIT_REG4	0x12
 531#define PHY_VITESSE_INIT_MSK1	0xc
 532#define PHY_VITESSE_INIT_MSK2	0x0180
 533#define PHY_VITESSE_INIT1	0x52b5
 534#define PHY_VITESSE_INIT2	0xaf8a
 535#define PHY_VITESSE_INIT3	0x8
 536#define PHY_VITESSE_INIT4	0x8f8a
 537#define PHY_VITESSE_INIT5	0xaf86
 538#define PHY_VITESSE_INIT6	0x8f86
 539#define PHY_VITESSE_INIT7	0xaf82
 540#define PHY_VITESSE_INIT8	0x0100
 541#define PHY_VITESSE_INIT9	0x8f82
 542#define PHY_VITESSE_INIT10	0x0
 543#define PHY_REALTEK_INIT_REG1	0x1f
 544#define PHY_REALTEK_INIT_REG2	0x19
 545#define PHY_REALTEK_INIT_REG3	0x13
 546#define PHY_REALTEK_INIT_REG4	0x14
 547#define PHY_REALTEK_INIT_REG5	0x18
 548#define PHY_REALTEK_INIT_REG6	0x11
 549#define PHY_REALTEK_INIT_REG7	0x01
 550#define PHY_REALTEK_INIT1	0x0000
 551#define PHY_REALTEK_INIT2	0x8e00
 552#define PHY_REALTEK_INIT3	0x0001
 553#define PHY_REALTEK_INIT4	0xad17
 554#define PHY_REALTEK_INIT5	0xfb54
 555#define PHY_REALTEK_INIT6	0xf5c7
 556#define PHY_REALTEK_INIT7	0x1000
 557#define PHY_REALTEK_INIT8	0x0003
 558#define PHY_REALTEK_INIT9	0x0008
 559#define PHY_REALTEK_INIT10	0x0005
 560#define PHY_REALTEK_INIT11	0x0200
 561#define PHY_REALTEK_INIT_MSK1	0x0003
 562
 563#define PHY_GIGABIT	0x0100
 564
 565#define PHY_TIMEOUT	0x1
 566#define PHY_ERROR	0x2
 567
 568#define PHY_100	0x1
 569#define PHY_1000	0x2
 570#define PHY_HALF	0x100
 571
 572#define NV_PAUSEFRAME_RX_CAPABLE 0x0001
 573#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
 574#define NV_PAUSEFRAME_RX_ENABLE  0x0004
 575#define NV_PAUSEFRAME_TX_ENABLE  0x0008
 576#define NV_PAUSEFRAME_RX_REQ     0x0010
 577#define NV_PAUSEFRAME_TX_REQ     0x0020
 578#define NV_PAUSEFRAME_AUTONEG    0x0040
 579
 580/* MSI/MSI-X defines */
 581#define NV_MSI_X_MAX_VECTORS  8
 582#define NV_MSI_X_VECTORS_MASK 0x000f
 583#define NV_MSI_CAPABLE        0x0010
 584#define NV_MSI_X_CAPABLE      0x0020
 585#define NV_MSI_ENABLED        0x0040
 586#define NV_MSI_X_ENABLED      0x0080
 587
 588#define NV_MSI_X_VECTOR_ALL   0x0
 589#define NV_MSI_X_VECTOR_RX    0x0
 590#define NV_MSI_X_VECTOR_TX    0x1
 591#define NV_MSI_X_VECTOR_OTHER 0x2
 592
 593#define NV_MSI_PRIV_OFFSET 0x68
 594#define NV_MSI_PRIV_VALUE  0xffffffff
 595
 596#define NV_RESTART_TX         0x1
 597#define NV_RESTART_RX         0x2
 598
 599#define NV_TX_LIMIT_COUNT     16
 600
 601#define NV_DYNAMIC_THRESHOLD        4
 602#define NV_DYNAMIC_MAX_QUIET_COUNT  2048
 603
 604/* statistics */
 605struct nv_ethtool_str {
 606	char name[ETH_GSTRING_LEN];
 607};
 608
 609static const struct nv_ethtool_str nv_estats_str[] = {
 610	{ "tx_bytes" }, /* includes Ethernet FCS CRC */
 611	{ "tx_zero_rexmt" },
 612	{ "tx_one_rexmt" },
 613	{ "tx_many_rexmt" },
 614	{ "tx_late_collision" },
 615	{ "tx_fifo_errors" },
 616	{ "tx_carrier_errors" },
 617	{ "tx_excess_deferral" },
 618	{ "tx_retry_error" },
 619	{ "rx_frame_error" },
 620	{ "rx_extra_byte" },
 621	{ "rx_late_collision" },
 622	{ "rx_runt" },
 623	{ "rx_frame_too_long" },
 624	{ "rx_over_errors" },
 625	{ "rx_crc_errors" },
 626	{ "rx_frame_align_error" },
 627	{ "rx_length_error" },
 628	{ "rx_unicast" },
 629	{ "rx_multicast" },
 630	{ "rx_broadcast" },
 631	{ "rx_packets" },
 632	{ "rx_errors_total" },
 633	{ "tx_errors_total" },
 634
 635	/* version 2 stats */
 636	{ "tx_deferral" },
 637	{ "tx_packets" },
 638	{ "rx_bytes" }, /* includes Ethernet FCS CRC */
 639	{ "tx_pause" },
 640	{ "rx_pause" },
 641	{ "rx_drop_frame" },
 642
 643	/* version 3 stats */
 644	{ "tx_unicast" },
 645	{ "tx_multicast" },
 646	{ "tx_broadcast" }
 647};
 648
 649struct nv_ethtool_stats {
 650	u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
 651	u64 tx_zero_rexmt;
 652	u64 tx_one_rexmt;
 653	u64 tx_many_rexmt;
 654	u64 tx_late_collision;
 655	u64 tx_fifo_errors;
 656	u64 tx_carrier_errors;
 657	u64 tx_excess_deferral;
 658	u64 tx_retry_error;
 659	u64 rx_frame_error;
 660	u64 rx_extra_byte;
 661	u64 rx_late_collision;
 662	u64 rx_runt;
 663	u64 rx_frame_too_long;
 664	u64 rx_over_errors;
 665	u64 rx_crc_errors;
 666	u64 rx_frame_align_error;
 667	u64 rx_length_error;
 668	u64 rx_unicast;
 669	u64 rx_multicast;
 670	u64 rx_broadcast;
 671	u64 rx_packets; /* should be ifconfig->rx_packets */
 672	u64 rx_errors_total;
 673	u64 tx_errors_total;
 674
 675	/* version 2 stats */
 676	u64 tx_deferral;
 677	u64 tx_packets; /* should be ifconfig->tx_packets */
 678	u64 rx_bytes;   /* should be ifconfig->rx_bytes + 4*rx_packets */
 679	u64 tx_pause;
 680	u64 rx_pause;
 681	u64 rx_drop_frame;
 682
 683	/* version 3 stats */
 684	u64 tx_unicast;
 685	u64 tx_multicast;
 686	u64 tx_broadcast;
 687};
 688
 689#define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
 690#define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
 691#define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
 692
 693/* diagnostics */
 694#define NV_TEST_COUNT_BASE 3
 695#define NV_TEST_COUNT_EXTENDED 4
 696
 697static const struct nv_ethtool_str nv_etests_str[] = {
 698	{ "link      (online/offline)" },
 699	{ "register  (offline)       " },
 700	{ "interrupt (offline)       " },
 701	{ "loopback  (offline)       " }
 702};
 703
 704struct register_test {
 705	__u32 reg;
 706	__u32 mask;
 707};
 708
 709static const struct register_test nv_registers_test[] = {
 710	{ NvRegUnknownSetupReg6, 0x01 },
 711	{ NvRegMisc1, 0x03c },
 712	{ NvRegOffloadConfig, 0x03ff },
 713	{ NvRegMulticastAddrA, 0xffffffff },
 714	{ NvRegTxWatermark, 0x0ff },
 715	{ NvRegWakeUpFlags, 0x07777 },
 716	{ 0, 0 }
 717};
 718
 719struct nv_skb_map {
 720	struct sk_buff *skb;
 721	dma_addr_t dma;
 722	unsigned int dma_len:31;
 723	unsigned int dma_single:1;
 724	struct ring_desc_ex *first_tx_desc;
 725	struct nv_skb_map *next_tx_ctx;
 726};
 727
 728/*
 729 * SMP locking:
 730 * All hardware access under netdev_priv(dev)->lock, except the performance
 731 * critical parts:
 732 * - rx is (pseudo-) lockless: it relies on the single-threading provided
 733 *	by the arch code for interrupts.
 734 * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
 735 *	needs netdev_priv(dev)->lock :-(
 736 * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
 737 *
 738 * Hardware stats updates are protected by hwstats_lock:
 739 * - updated by nv_do_stats_poll (timer). This is meant to avoid
 740 *   integer wraparound in the NIC stats registers, at low frequency
 741 *   (0.1 Hz)
 742 * - updated by nv_get_ethtool_stats + nv_get_stats64
 743 *
 744 * Software stats are accessed only through 64b synchronization points
 745 * and are not subject to other synchronization techniques (single
 746 * update thread on the TX or RX paths).
 747 */
 748
 749/* in dev: base, irq */
 750struct fe_priv {
 751	spinlock_t lock;
 752
 753	struct net_device *dev;
 754	struct napi_struct napi;
 755
 756	/* hardware stats are updated in syscall and timer */
 757	spinlock_t hwstats_lock;
 758	struct nv_ethtool_stats estats;
 759
 760	int in_shutdown;
 761	u32 linkspeed;
 762	int duplex;
 763	int autoneg;
 764	int fixed_mode;
 765	int phyaddr;
 766	int wolenabled;
 767	unsigned int phy_oui;
 768	unsigned int phy_model;
 769	unsigned int phy_rev;
 770	u16 gigabit;
 771	int intr_test;
 772	int recover_error;
 773	int quiet_count;
 774
 775	/* General data: RO fields */
 776	dma_addr_t ring_addr;
 777	struct pci_dev *pci_dev;
 778	u32 orig_mac[2];
 779	u32 events;
 780	u32 irqmask;
 781	u32 desc_ver;
 782	u32 txrxctl_bits;
 783	u32 vlanctl_bits;
 784	u32 driver_data;
 785	u32 device_id;
 786	u32 register_size;
 787	u32 mac_in_use;
 788	int mgmt_version;
 789	int mgmt_sema;
 790
 791	void __iomem *base;
 792
 793	/* rx specific fields.
 794	 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 795	 */
 796	union ring_type get_rx, put_rx, first_rx, last_rx;
 797	struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
 798	struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
 799	struct nv_skb_map *rx_skb;
 800
 801	union ring_type rx_ring;
 802	unsigned int rx_buf_sz;
 803	unsigned int pkt_limit;
 804	struct timer_list oom_kick;
 805	struct timer_list nic_poll;
 806	struct timer_list stats_poll;
 807	u32 nic_poll_irq;
 808	int rx_ring_size;
 809
 810	/* RX software stats */
 811	struct u64_stats_sync swstats_rx_syncp;
 812	u64 stat_rx_packets;
 813	u64 stat_rx_bytes; /* not always available in HW */
 814	u64 stat_rx_missed_errors;
 815	u64 stat_rx_dropped;
 816
 817	/* media detection workaround.
 818	 * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
 819	 */
 820	int need_linktimer;
 821	unsigned long link_timeout;
 822	/*
 823	 * tx specific fields.
 824	 */
 825	union ring_type get_tx, put_tx, first_tx, last_tx;
 826	struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
 827	struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
 828	struct nv_skb_map *tx_skb;
 829
 830	union ring_type tx_ring;
 831	u32 tx_flags;
 832	int tx_ring_size;
 833	int tx_limit;
 834	u32 tx_pkts_in_progress;
 835	struct nv_skb_map *tx_change_owner;
 836	struct nv_skb_map *tx_end_flip;
 837	int tx_stop;
 838
 839	/* TX software stats */
 840	struct u64_stats_sync swstats_tx_syncp;
 841	u64 stat_tx_packets; /* not always available in HW */
 842	u64 stat_tx_bytes;
 843	u64 stat_tx_dropped;
 844
 845	/* msi/msi-x fields */
 846	u32 msi_flags;
 847	struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
 848
 849	/* flow control */
 850	u32 pause_flags;
 851
 852	/* power saved state */
 853	u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
 854
 855	/* for different msi-x irq type */
 856	char name_rx[IFNAMSIZ + 3];       /* -rx    */
 857	char name_tx[IFNAMSIZ + 3];       /* -tx    */
 858	char name_other[IFNAMSIZ + 6];    /* -other */
 859};
 860
 861/*
 862 * Maximum number of loops until we assume that a bit in the irq mask
 863 * is stuck. Overridable with module param.
 864 */
 865static int max_interrupt_work = 4;
 866
 867/*
 868 * Optimization can be either throuput mode or cpu mode
 869 *
 870 * Throughput Mode: Every tx and rx packet will generate an interrupt.
 871 * CPU Mode: Interrupts are controlled by a timer.
 872 */
 873enum {
 874	NV_OPTIMIZATION_MODE_THROUGHPUT,
 875	NV_OPTIMIZATION_MODE_CPU,
 876	NV_OPTIMIZATION_MODE_DYNAMIC
 877};
 878static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
 879
 880/*
 881 * Poll interval for timer irq
 882 *
 883 * This interval determines how frequent an interrupt is generated.
 884 * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
 885 * Min = 0, and Max = 65535
 886 */
 887static int poll_interval = -1;
 888
 889/*
 890 * MSI interrupts
 891 */
 892enum {
 893	NV_MSI_INT_DISABLED,
 894	NV_MSI_INT_ENABLED
 895};
 896static int msi = NV_MSI_INT_ENABLED;
 897
 898/*
 899 * MSIX interrupts
 900 */
 901enum {
 902	NV_MSIX_INT_DISABLED,
 903	NV_MSIX_INT_ENABLED
 904};
 905static int msix = NV_MSIX_INT_ENABLED;
 906
 907/*
 908 * DMA 64bit
 909 */
 910enum {
 911	NV_DMA_64BIT_DISABLED,
 912	NV_DMA_64BIT_ENABLED
 913};
 914static int dma_64bit = NV_DMA_64BIT_ENABLED;
 915
 916/*
 917 * Debug output control for tx_timeout
 918 */
 919static bool debug_tx_timeout = false;
 920
 921/*
 922 * Crossover Detection
 923 * Realtek 8201 phy + some OEM boards do not work properly.
 924 */
 925enum {
 926	NV_CROSSOVER_DETECTION_DISABLED,
 927	NV_CROSSOVER_DETECTION_ENABLED
 928};
 929static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
 930
 931/*
 932 * Power down phy when interface is down (persists through reboot;
 933 * older Linux and other OSes may not power it up again)
 934 */
 935static int phy_power_down;
 936
 937static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 938{
 939	return netdev_priv(dev);
 940}
 941
 942static inline u8 __iomem *get_hwbase(struct net_device *dev)
 943{
 944	return ((struct fe_priv *)netdev_priv(dev))->base;
 945}
 946
 947static inline void pci_push(u8 __iomem *base)
 948{
 949	/* force out pending posted writes */
 950	readl(base);
 951}
 952
 953static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
 954{
 955	return le32_to_cpu(prd->flaglen)
 956		& ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 957}
 958
 959static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
 960{
 961	return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
 962}
 963
 964static bool nv_optimized(struct fe_priv *np)
 965{
 966	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
 967		return false;
 968	return true;
 969}
 970
 971static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
 972		     int delay, int delaymax)
 973{
 974	u8 __iomem *base = get_hwbase(dev);
 975
 976	pci_push(base);
 977	do {
 978		udelay(delay);
 979		delaymax -= delay;
 980		if (delaymax < 0)
 981			return 1;
 982	} while ((readl(base + offset) & mask) != target);
 983	return 0;
 984}
 985
 986#define NV_SETUP_RX_RING 0x01
 987#define NV_SETUP_TX_RING 0x02
 988
 989static inline u32 dma_low(dma_addr_t addr)
 990{
 991	return addr;
 992}
 993
 994static inline u32 dma_high(dma_addr_t addr)
 995{
 996	return addr>>31>>1;	/* 0 if 32bit, shift down by 32 if 64bit */
 997}
 998
 999static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
1000{
1001	struct fe_priv *np = get_nvpriv(dev);
1002	u8 __iomem *base = get_hwbase(dev);
1003
1004	if (!nv_optimized(np)) {
1005		if (rxtx_flags & NV_SETUP_RX_RING)
1006			writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1007		if (rxtx_flags & NV_SETUP_TX_RING)
1008			writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
1009	} else {
1010		if (rxtx_flags & NV_SETUP_RX_RING) {
1011			writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
1012			writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
1013		}
1014		if (rxtx_flags & NV_SETUP_TX_RING) {
1015			writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
1016			writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
1017		}
1018	}
1019}
1020
1021static void free_rings(struct net_device *dev)
1022{
1023	struct fe_priv *np = get_nvpriv(dev);
1024
1025	if (!nv_optimized(np)) {
1026		if (np->rx_ring.orig)
1027			pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
1028					    np->rx_ring.orig, np->ring_addr);
1029	} else {
1030		if (np->rx_ring.ex)
1031			pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
1032					    np->rx_ring.ex, np->ring_addr);
1033	}
1034	kfree(np->rx_skb);
1035	kfree(np->tx_skb);
1036}
1037
1038static int using_multi_irqs(struct net_device *dev)
1039{
1040	struct fe_priv *np = get_nvpriv(dev);
1041
1042	if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
1043	    ((np->msi_flags & NV_MSI_X_ENABLED) &&
1044	     ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
1045		return 0;
1046	else
1047		return 1;
1048}
1049
1050static void nv_txrx_gate(struct net_device *dev, bool gate)
1051{
1052	struct fe_priv *np = get_nvpriv(dev);
1053	u8 __iomem *base = get_hwbase(dev);
1054	u32 powerstate;
1055
1056	if (!np->mac_in_use &&
1057	    (np->driver_data & DEV_HAS_POWER_CNTRL)) {
1058		powerstate = readl(base + NvRegPowerState2);
1059		if (gate)
1060			powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
1061		else
1062			powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
1063		writel(powerstate, base + NvRegPowerState2);
1064	}
1065}
1066
1067static void nv_enable_irq(struct net_device *dev)
1068{
1069	struct fe_priv *np = get_nvpriv(dev);
1070
1071	if (!using_multi_irqs(dev)) {
1072		if (np->msi_flags & NV_MSI_X_ENABLED)
1073			enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1074		else
1075			enable_irq(np->pci_dev->irq);
1076	} else {
1077		enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1078		enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1079		enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1080	}
1081}
1082
1083static void nv_disable_irq(struct net_device *dev)
1084{
1085	struct fe_priv *np = get_nvpriv(dev);
1086
1087	if (!using_multi_irqs(dev)) {
1088		if (np->msi_flags & NV_MSI_X_ENABLED)
1089			disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
1090		else
1091			disable_irq(np->pci_dev->irq);
1092	} else {
1093		disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
1094		disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
1095		disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
1096	}
1097}
1098
1099/* In MSIX mode, a write to irqmask behaves as XOR */
1100static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
1101{
1102	u8 __iomem *base = get_hwbase(dev);
1103
1104	writel(mask, base + NvRegIrqMask);
1105}
1106
1107static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
1108{
1109	struct fe_priv *np = get_nvpriv(dev);
1110	u8 __iomem *base = get_hwbase(dev);
1111
1112	if (np->msi_flags & NV_MSI_X_ENABLED) {
1113		writel(mask, base + NvRegIrqMask);
1114	} else {
1115		if (np->msi_flags & NV_MSI_ENABLED)
1116			writel(0, base + NvRegMSIIrqMask);
1117		writel(0, base + NvRegIrqMask);
1118	}
1119}
1120
1121static void nv_napi_enable(struct net_device *dev)
1122{
1123	struct fe_priv *np = get_nvpriv(dev);
1124
1125	napi_enable(&np->napi);
1126}
1127
1128static void nv_napi_disable(struct net_device *dev)
1129{
1130	struct fe_priv *np = get_nvpriv(dev);
1131
1132	napi_disable(&np->napi);
1133}
1134
1135#define MII_READ	(-1)
1136/* mii_rw: read/write a register on the PHY.
1137 *
1138 * Caller must guarantee serialization
1139 */
1140static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
1141{
1142	u8 __iomem *base = get_hwbase(dev);
1143	u32 reg;
1144	int retval;
1145
1146	writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
1147
1148	reg = readl(base + NvRegMIIControl);
1149	if (reg & NVREG_MIICTL_INUSE) {
1150		writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
1151		udelay(NV_MIIBUSY_DELAY);
1152	}
1153
1154	reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
1155	if (value != MII_READ) {
1156		writel(value, base + NvRegMIIData);
1157		reg |= NVREG_MIICTL_WRITE;
1158	}
1159	writel(reg, base + NvRegMIIControl);
1160
1161	if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
1162			NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
1163		retval = -1;
1164	} else if (value != MII_READ) {
1165		/* it was a write operation - fewer failures are detectable */
1166		retval = 0;
1167	} else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
1168		retval = -1;
1169	} else {
1170		retval = readl(base + NvRegMIIData);
1171	}
1172
1173	return retval;
1174}
1175
1176static int phy_reset(struct net_device *dev, u32 bmcr_setup)
1177{
1178	struct fe_priv *np = netdev_priv(dev);
1179	u32 miicontrol;
1180	unsigned int tries = 0;
1181
1182	miicontrol = BMCR_RESET | bmcr_setup;
1183	if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
1184		return -1;
1185
1186	/* wait for 500ms */
1187	msleep(500);
1188
1189	/* must wait till reset is deasserted */
1190	while (miicontrol & BMCR_RESET) {
1191		usleep_range(10000, 20000);
1192		miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1193		/* FIXME: 100 tries seem excessive */
1194		if (tries++ > 100)
1195			return -1;
1196	}
1197	return 0;
1198}
1199
1200static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
1201{
1202	static const struct {
1203		int reg;
1204		int init;
1205	} ri[] = {
1206		{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1207		{ PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
1208		{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
1209		{ PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
1210		{ PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
1211		{ PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
1212		{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
1213	};
1214	int i;
1215
1216	for (i = 0; i < ARRAY_SIZE(ri); i++) {
1217		if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
1218			return PHY_ERROR;
1219	}
1220
1221	return 0;
1222}
1223
1224static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
1225{
1226	u32 reg;
1227	u8 __iomem *base = get_hwbase(dev);
1228	u32 powerstate = readl(base + NvRegPowerState2);
1229
1230	/* need to perform hw phy reset */
1231	powerstate |= NVREG_POWERSTATE2_PHY_RESET;
1232	writel(powerstate, base + NvRegPowerState2);
1233	msleep(25);
1234
1235	powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
1236	writel(powerstate, base + NvRegPowerState2);
1237	msleep(25);
1238
1239	reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
1240	reg |= PHY_REALTEK_INIT9;
1241	if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
1242		return PHY_ERROR;
1243	if (mii_rw(dev, np->phyaddr,
1244		   PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
1245		return PHY_ERROR;
1246	reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
1247	if (!(reg & PHY_REALTEK_INIT11)) {
1248		reg |= PHY_REALTEK_INIT11;
1249		if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
1250			return PHY_ERROR;
1251	}
1252	if (mii_rw(dev, np->phyaddr,
1253		   PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1254		return PHY_ERROR;
1255
1256	return 0;
1257}
1258
1259static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
1260{
1261	u32 phy_reserved;
1262
1263	if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
1264		phy_reserved = mii_rw(dev, np->phyaddr,
1265				      PHY_REALTEK_INIT_REG6, MII_READ);
1266		phy_reserved |= PHY_REALTEK_INIT7;
1267		if (mii_rw(dev, np->phyaddr,
1268			   PHY_REALTEK_INIT_REG6, phy_reserved))
1269			return PHY_ERROR;
1270	}
1271
1272	return 0;
1273}
1274
1275static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
1276{
1277	u32 phy_reserved;
1278
1279	if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
1280		if (mii_rw(dev, np->phyaddr,
1281			   PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
1282			return PHY_ERROR;
1283		phy_reserved = mii_rw(dev, np->phyaddr,
1284				      PHY_REALTEK_INIT_REG2, MII_READ);
1285		phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
1286		phy_reserved |= PHY_REALTEK_INIT3;
1287		if (mii_rw(dev, np->phyaddr,
1288			   PHY_REALTEK_INIT_REG2, phy_reserved))
1289			return PHY_ERROR;
1290		if (mii_rw(dev, np->phyaddr,
1291			   PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
1292			return PHY_ERROR;
1293	}
1294
1295	return 0;
1296}
1297
1298static int init_cicada(struct net_device *dev, struct fe_priv *np,
1299		       u32 phyinterface)
1300{
1301	u32 phy_reserved;
1302
1303	if (phyinterface & PHY_RGMII) {
1304		phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
1305		phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
1306		phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
1307		if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
1308			return PHY_ERROR;
1309		phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1310		phy_reserved |= PHY_CICADA_INIT5;
1311		if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
1312			return PHY_ERROR;
1313	}
1314	phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
1315	phy_reserved |= PHY_CICADA_INIT6;
1316	if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
1317		return PHY_ERROR;
1318
1319	return 0;
1320}
1321
1322static int init_vitesse(struct net_device *dev, struct fe_priv *np)
1323{
1324	u32 phy_reserved;
1325
1326	if (mii_rw(dev, np->phyaddr,
1327		   PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
1328		return PHY_ERROR;
1329	if (mii_rw(dev, np->phyaddr,
1330		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
1331		return PHY_ERROR;
1332	phy_reserved = mii_rw(dev, np->phyaddr,
1333			      PHY_VITESSE_INIT_REG4, MII_READ);
1334	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1335		return PHY_ERROR;
1336	phy_reserved = mii_rw(dev, np->phyaddr,
1337			      PHY_VITESSE_INIT_REG3, MII_READ);
1338	phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1339	phy_reserved |= PHY_VITESSE_INIT3;
1340	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1341		return PHY_ERROR;
1342	if (mii_rw(dev, np->phyaddr,
1343		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
1344		return PHY_ERROR;
1345	if (mii_rw(dev, np->phyaddr,
1346		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
1347		return PHY_ERROR;
1348	phy_reserved = mii_rw(dev, np->phyaddr,
1349			      PHY_VITESSE_INIT_REG4, MII_READ);
1350	phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
1351	phy_reserved |= PHY_VITESSE_INIT3;
1352	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1353		return PHY_ERROR;
1354	phy_reserved = mii_rw(dev, np->phyaddr,
1355			      PHY_VITESSE_INIT_REG3, MII_READ);
1356	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1357		return PHY_ERROR;
1358	if (mii_rw(dev, np->phyaddr,
1359		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
1360		return PHY_ERROR;
1361	if (mii_rw(dev, np->phyaddr,
1362		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
1363		return PHY_ERROR;
1364	phy_reserved = mii_rw(dev, np->phyaddr,
1365			      PHY_VITESSE_INIT_REG4, MII_READ);
1366	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
1367		return PHY_ERROR;
1368	phy_reserved = mii_rw(dev, np->phyaddr,
1369			      PHY_VITESSE_INIT_REG3, MII_READ);
1370	phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
1371	phy_reserved |= PHY_VITESSE_INIT8;
1372	if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
1373		return PHY_ERROR;
1374	if (mii_rw(dev, np->phyaddr,
1375		   PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
1376		return PHY_ERROR;
1377	if (mii_rw(dev, np->phyaddr,
1378		   PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
1379		return PHY_ERROR;
1380
1381	return 0;
1382}
1383
1384static int phy_init(struct net_device *dev)
1385{
1386	struct fe_priv *np = get_nvpriv(dev);
1387	u8 __iomem *base = get_hwbase(dev);
1388	u32 phyinterface;
1389	u32 mii_status, mii_control, mii_control_1000, reg;
1390
1391	/* phy errata for E3016 phy */
1392	if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
1393		reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
1394		reg &= ~PHY_MARVELL_E3016_INITMASK;
1395		if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
1396			netdev_info(dev, "%s: phy write to errata reg failed\n",
1397				    pci_name(np->pci_dev));
1398			return PHY_ERROR;
1399		}
1400	}
1401	if (np->phy_oui == PHY_OUI_REALTEK) {
1402		if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1403		    np->phy_rev == PHY_REV_REALTEK_8211B) {
1404			if (init_realtek_8211b(dev, np)) {
1405				netdev_info(dev, "%s: phy init failed\n",
1406					    pci_name(np->pci_dev));
1407				return PHY_ERROR;
1408			}
1409		} else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1410			   np->phy_rev == PHY_REV_REALTEK_8211C) {
1411			if (init_realtek_8211c(dev, np)) {
1412				netdev_info(dev, "%s: phy init failed\n",
1413					    pci_name(np->pci_dev));
1414				return PHY_ERROR;
1415			}
1416		} else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1417			if (init_realtek_8201(dev, np)) {
1418				netdev_info(dev, "%s: phy init failed\n",
1419					    pci_name(np->pci_dev));
1420				return PHY_ERROR;
1421			}
1422		}
1423	}
1424
1425	/* set advertise register */
1426	reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
1427	reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
1428		ADVERTISE_100HALF | ADVERTISE_100FULL |
1429		ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
1430	if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
1431		netdev_info(dev, "%s: phy write to advertise failed\n",
1432			    pci_name(np->pci_dev));
1433		return PHY_ERROR;
1434	}
1435
1436	/* get phy interface type */
1437	phyinterface = readl(base + NvRegPhyInterface);
1438
1439	/* see if gigabit phy */
1440	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
1441	if (mii_status & PHY_GIGABIT) {
1442		np->gigabit = PHY_GIGABIT;
1443		mii_control_1000 = mii_rw(dev, np->phyaddr,
1444					  MII_CTRL1000, MII_READ);
1445		mii_control_1000 &= ~ADVERTISE_1000HALF;
1446		if (phyinterface & PHY_RGMII)
1447			mii_control_1000 |= ADVERTISE_1000FULL;
1448		else
1449			mii_control_1000 &= ~ADVERTISE_1000FULL;
1450
1451		if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
1452			netdev_info(dev, "%s: phy init failed\n",
1453				    pci_name(np->pci_dev));
1454			return PHY_ERROR;
1455		}
1456	} else
1457		np->gigabit = 0;
1458
1459	mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1460	mii_control |= BMCR_ANENABLE;
1461
1462	if (np->phy_oui == PHY_OUI_REALTEK &&
1463	    np->phy_model == PHY_MODEL_REALTEK_8211 &&
1464	    np->phy_rev == PHY_REV_REALTEK_8211C) {
1465		/* start autoneg since we already performed hw reset above */
1466		mii_control |= BMCR_ANRESTART;
1467		if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
1468			netdev_info(dev, "%s: phy init failed\n",
1469				    pci_name(np->pci_dev));
1470			return PHY_ERROR;
1471		}
1472	} else {
1473		/* reset the phy
1474		 * (certain phys need bmcr to be setup with reset)
1475		 */
1476		if (phy_reset(dev, mii_control)) {
1477			netdev_info(dev, "%s: phy reset failed\n",
1478				    pci_name(np->pci_dev));
1479			return PHY_ERROR;
1480		}
1481	}
1482
1483	/* phy vendor specific configuration */
1484	if (np->phy_oui == PHY_OUI_CICADA) {
1485		if (init_cicada(dev, np, phyinterface)) {
1486			netdev_info(dev, "%s: phy init failed\n",
1487				    pci_name(np->pci_dev));
1488			return PHY_ERROR;
1489		}
1490	} else if (np->phy_oui == PHY_OUI_VITESSE) {
1491		if (init_vitesse(dev, np)) {
1492			netdev_info(dev, "%s: phy init failed\n",
1493				    pci_name(np->pci_dev));
1494			return PHY_ERROR;
1495		}
1496	} else if (np->phy_oui == PHY_OUI_REALTEK) {
1497		if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
1498		    np->phy_rev == PHY_REV_REALTEK_8211B) {
1499			/* reset could have cleared these out, set them back */
1500			if (init_realtek_8211b(dev, np)) {
1501				netdev_info(dev, "%s: phy init failed\n",
1502					    pci_name(np->pci_dev));
1503				return PHY_ERROR;
1504			}
1505		} else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
1506			if (init_realtek_8201(dev, np) ||
1507			    init_realtek_8201_cross(dev, np)) {
1508				netdev_info(dev, "%s: phy init failed\n",
1509					    pci_name(np->pci_dev));
1510				return PHY_ERROR;
1511			}
1512		}
1513	}
1514
1515	/* some phys clear out pause advertisement on reset, set it back */
1516	mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
1517
1518	/* restart auto negotiation, power down phy */
1519	mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
1520	mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
1521	if (phy_power_down)
1522		mii_control |= BMCR_PDOWN;
1523	if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
1524		return PHY_ERROR;
1525
1526	return 0;
1527}
1528
1529static void nv_start_rx(struct net_device *dev)
1530{
1531	struct fe_priv *np = netdev_priv(dev);
1532	u8 __iomem *base = get_hwbase(dev);
1533	u32 rx_ctrl = readl(base + NvRegReceiverControl);
1534
1535	/* Already running? Stop it. */
1536	if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
1537		rx_ctrl &= ~NVREG_RCVCTL_START;
1538		writel(rx_ctrl, base + NvRegReceiverControl);
1539		pci_push(base);
1540	}
1541	writel(np->linkspeed, base + NvRegLinkSpeed);
1542	pci_push(base);
1543	rx_ctrl |= NVREG_RCVCTL_START;
1544	if (np->mac_in_use)
1545		rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
1546	writel(rx_ctrl, base + NvRegReceiverControl);
1547	pci_push(base);
1548}
1549
1550static void nv_stop_rx(struct net_device *dev)
1551{
1552	struct fe_priv *np = netdev_priv(dev);
1553	u8 __iomem *base = get_hwbase(dev);
1554	u32 rx_ctrl = readl(base + NvRegReceiverControl);
1555
1556	if (!np->mac_in_use)
1557		rx_ctrl &= ~NVREG_RCVCTL_START;
1558	else
1559		rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
1560	writel(rx_ctrl, base + NvRegReceiverControl);
1561	if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
1562		      NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
1563		netdev_info(dev, "%s: ReceiverStatus remained busy\n",
1564			    __func__);
1565
1566	udelay(NV_RXSTOP_DELAY2);
1567	if (!np->mac_in_use)
1568		writel(0, base + NvRegLinkSpeed);
1569}
1570
1571static void nv_start_tx(struct net_device *dev)
1572{
1573	struct fe_priv *np = netdev_priv(dev);
1574	u8 __iomem *base = get_hwbase(dev);
1575	u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1576
1577	tx_ctrl |= NVREG_XMITCTL_START;
1578	if (np->mac_in_use)
1579		tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
1580	writel(tx_ctrl, base + NvRegTransmitterControl);
1581	pci_push(base);
1582}
1583
1584static void nv_stop_tx(struct net_device *dev)
1585{
1586	struct fe_priv *np = netdev_priv(dev);
1587	u8 __iomem *base = get_hwbase(dev);
1588	u32 tx_ctrl = readl(base + NvRegTransmitterControl);
1589
1590	if (!np->mac_in_use)
1591		tx_ctrl &= ~NVREG_XMITCTL_START;
1592	else
1593		tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
1594	writel(tx_ctrl, base + NvRegTransmitterControl);
1595	if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
1596		      NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
1597		netdev_info(dev, "%s: TransmitterStatus remained busy\n",
1598			    __func__);
1599
1600	udelay(NV_TXSTOP_DELAY2);
1601	if (!np->mac_in_use)
1602		writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
1603		       base + NvRegTransmitPoll);
1604}
1605
1606static void nv_start_rxtx(struct net_device *dev)
1607{
1608	nv_start_rx(dev);
1609	nv_start_tx(dev);
1610}
1611
1612static void nv_stop_rxtx(struct net_device *dev)
1613{
1614	nv_stop_rx(dev);
1615	nv_stop_tx(dev);
1616}
1617
1618static void nv_txrx_reset(struct net_device *dev)
1619{
1620	struct fe_priv *np = netdev_priv(dev);
1621	u8 __iomem *base = get_hwbase(dev);
1622
1623	writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1624	pci_push(base);
1625	udelay(NV_TXRX_RESET_DELAY);
1626	writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1627	pci_push(base);
1628}
1629
1630static void nv_mac_reset(struct net_device *dev)
1631{
1632	struct fe_priv *np = netdev_priv(dev);
1633	u8 __iomem *base = get_hwbase(dev);
1634	u32 temp1, temp2, temp3;
1635
1636	writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
1637	pci_push(base);
1638
1639	/* save registers since they will be cleared on reset */
1640	temp1 = readl(base + NvRegMacAddrA);
1641	temp2 = readl(base + NvRegMacAddrB);
1642	temp3 = readl(base + NvRegTransmitPoll);
1643
1644	writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
1645	pci_push(base);
1646	udelay(NV_MAC_RESET_DELAY);
1647	writel(0, base + NvRegMacReset);
1648	pci_push(base);
1649	udelay(NV_MAC_RESET_DELAY);
1650
1651	/* restore saved registers */
1652	writel(temp1, base + NvRegMacAddrA);
1653	writel(temp2, base + NvRegMacAddrB);
1654	writel(temp3, base + NvRegTransmitPoll);
1655
1656	writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
1657	pci_push(base);
1658}
1659
1660/* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
1661static void nv_update_stats(struct net_device *dev)
1662{
1663	struct fe_priv *np = netdev_priv(dev);
1664	u8 __iomem *base = get_hwbase(dev);
1665
1666	/* If it happens that this is run in top-half context, then
1667	 * replace the spin_lock of hwstats_lock with
1668	 * spin_lock_irqsave() in calling functions. */
1669	WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half");
1670	assert_spin_locked(&np->hwstats_lock);
1671
1672	/* query hardware */
1673	np->estats.tx_bytes += readl(base + NvRegTxCnt);
1674	np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
1675	np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
1676	np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
1677	np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
1678	np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
1679	np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
1680	np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
1681	np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
1682	np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
1683	np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
1684	np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
1685	np->estats.rx_runt += readl(base + NvRegRxRunt);
1686	np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
1687	np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
1688	np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
1689	np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
1690	np->estats.rx_length_error += readl(base + NvRegRxLenErr);
1691	np->estats.rx_unicast += readl(base + NvRegRxUnicast);
1692	np->estats.rx_multicast += readl(base + NvRegRxMulticast);
1693	np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
1694	np->estats.rx_packets =
1695		np->estats.rx_unicast +
1696		np->estats.rx_multicast +
1697		np->estats.rx_broadcast;
1698	np->estats.rx_errors_total =
1699		np->estats.rx_crc_errors +
1700		np->estats.rx_over_errors +
1701		np->estats.rx_frame_error +
1702		(np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
1703		np->estats.rx_late_collision +
1704		np->estats.rx_runt +
1705		np->estats.rx_frame_too_long;
1706	np->estats.tx_errors_total =
1707		np->estats.tx_late_collision +
1708		np->estats.tx_fifo_errors +
1709		np->estats.tx_carrier_errors +
1710		np->estats.tx_excess_deferral +
1711		np->estats.tx_retry_error;
1712
1713	if (np->driver_data & DEV_HAS_STATISTICS_V2) {
1714		np->estats.tx_deferral += readl(base + NvRegTxDef);
1715		np->estats.tx_packets += readl(base + NvRegTxFrame);
1716		np->estats.rx_bytes += readl(base + NvRegRxCnt);
1717		np->estats.tx_pause += readl(base + NvRegTxPause);
1718		np->estats.rx_pause += readl(base + NvRegRxPause);
1719		np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
1720		np->estats.rx_errors_total += np->estats.rx_drop_frame;
1721	}
1722
1723	if (np->driver_data & DEV_HAS_STATISTICS_V3) {
1724		np->estats.tx_unicast += readl(base + NvRegTxUnicast);
1725		np->estats.tx_multicast += readl(base + NvRegTxMulticast);
1726		np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
1727	}
1728}
1729
1730/*
1731 * nv_get_stats64: dev->ndo_get_stats64 function
1732 * Get latest stats value from the nic.
1733 * Called with read_lock(&dev_base_lock) held for read -
1734 * only synchronized against unregister_netdevice.
1735 */
1736static struct rtnl_link_stats64*
1737nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
1738	__acquires(&netdev_priv(dev)->hwstats_lock)
1739	__releases(&netdev_priv(dev)->hwstats_lock)
1740{
1741	struct fe_priv *np = netdev_priv(dev);
1742	unsigned int syncp_start;
1743
1744	/*
1745	 * Note: because HW stats are not always available and for
1746	 * consistency reasons, the following ifconfig stats are
1747	 * managed by software: rx_bytes, tx_bytes, rx_packets and
1748	 * tx_packets. The related hardware stats reported by ethtool
1749	 * should be equivalent to these ifconfig stats, with 4
1750	 * additional bytes per packet (Ethernet FCS CRC), except for
1751	 * tx_packets when TSO kicks in.
1752	 */
1753
1754	/* software stats */
1755	do {
1756		syncp_start = u64_stats_fetch_begin_irq(&np->swstats_rx_syncp);
1757		storage->rx_packets       = np->stat_rx_packets;
1758		storage->rx_bytes         = np->stat_rx_bytes;
1759		storage->rx_dropped       = np->stat_rx_dropped;
1760		storage->rx_missed_errors = np->stat_rx_missed_errors;
1761	} while (u64_stats_fetch_retry_irq(&np->swstats_rx_syncp, syncp_start));
1762
1763	do {
1764		syncp_start = u64_stats_fetch_begin_irq(&np->swstats_tx_syncp);
1765		storage->tx_packets = np->stat_tx_packets;
1766		storage->tx_bytes   = np->stat_tx_bytes;
1767		storage->tx_dropped = np->stat_tx_dropped;
1768	} while (u64_stats_fetch_retry_irq(&np->swstats_tx_syncp, syncp_start));
1769
1770	/* If the nic supports hw counters then retrieve latest values */
1771	if (np->driver_data & DEV_HAS_STATISTICS_V123) {
1772		spin_lock_bh(&np->hwstats_lock);
1773
1774		nv_update_stats(dev);
1775
1776		/* generic stats */
1777		storage->rx_errors = np->estats.rx_errors_total;
1778		storage->tx_errors = np->estats.tx_errors_total;
1779
1780		/* meaningful only when NIC supports stats v3 */
1781		storage->multicast = np->estats.rx_multicast;
1782
1783		/* detailed rx_errors */
1784		storage->rx_length_errors = np->estats.rx_length_error;
1785		storage->rx_over_errors   = np->estats.rx_over_errors;
1786		storage->rx_crc_errors    = np->estats.rx_crc_errors;
1787		storage->rx_frame_errors  = np->estats.rx_frame_align_error;
1788		storage->rx_fifo_errors   = np->estats.rx_drop_frame;
1789
1790		/* detailed tx_errors */
1791		storage->tx_carrier_errors = np->estats.tx_carrier_errors;
1792		storage->tx_fifo_errors    = np->estats.tx_fifo_errors;
1793
1794		spin_unlock_bh(&np->hwstats_lock);
1795	}
1796
1797	return storage;
1798}
1799
1800/*
1801 * nv_alloc_rx: fill rx ring entries.
1802 * Return 1 if the allocations for the skbs failed and the
1803 * rx engine is without Available descriptors
1804 */
1805static int nv_alloc_rx(struct net_device *dev)
1806{
1807	struct fe_priv *np = netdev_priv(dev);
1808	struct ring_desc *less_rx;
1809
1810	less_rx = np->get_rx.orig;
1811	if (less_rx-- == np->first_rx.orig)
1812		less_rx = np->last_rx.orig;
1813
1814	while (np->put_rx.orig != less_rx) {
1815		struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1816		if (skb) {
1817			np->put_rx_ctx->skb = skb;
1818			np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1819							     skb->data,
1820							     skb_tailroom(skb),
1821							     PCI_DMA_FROMDEVICE);
1822			if (pci_dma_mapping_error(np->pci_dev,
1823						  np->put_rx_ctx->dma)) {
1824				kfree_skb(skb);
1825				goto packet_dropped;
1826			}
1827			np->put_rx_ctx->dma_len = skb_tailroom(skb);
1828			np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
1829			wmb();
1830			np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
1831			if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
1832				np->put_rx.orig = np->first_rx.orig;
1833			if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1834				np->put_rx_ctx = np->first_rx_ctx;
1835		} else {
1836packet_dropped:
1837			u64_stats_update_begin(&np->swstats_rx_syncp);
1838			np->stat_rx_dropped++;
1839			u64_stats_update_end(&np->swstats_rx_syncp);
1840			return 1;
1841		}
1842	}
1843	return 0;
1844}
1845
1846static int nv_alloc_rx_optimized(struct net_device *dev)
1847{
1848	struct fe_priv *np = netdev_priv(dev);
1849	struct ring_desc_ex *less_rx;
1850
1851	less_rx = np->get_rx.ex;
1852	if (less_rx-- == np->first_rx.ex)
1853		less_rx = np->last_rx.ex;
1854
1855	while (np->put_rx.ex != less_rx) {
1856		struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz + NV_RX_ALLOC_PAD);
1857		if (skb) {
1858			np->put_rx_ctx->skb = skb;
1859			np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
1860							     skb->data,
1861							     skb_tailroom(skb),
1862							     PCI_DMA_FROMDEVICE);
1863			if (pci_dma_mapping_error(np->pci_dev,
1864						  np->put_rx_ctx->dma)) {
1865				kfree_skb(skb);
1866				goto packet_dropped;
1867			}
1868			np->put_rx_ctx->dma_len = skb_tailroom(skb);
1869			np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
1870			np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
1871			wmb();
1872			np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
1873			if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
1874				np->put_rx.ex = np->first_rx.ex;
1875			if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
1876				np->put_rx_ctx = np->first_rx_ctx;
1877		} else {
1878packet_dropped:
1879			u64_stats_update_begin(&np->swstats_rx_syncp);
1880			np->stat_rx_dropped++;
1881			u64_stats_update_end(&np->swstats_rx_syncp);
1882			return 1;
1883		}
1884	}
1885	return 0;
1886}
1887
1888/* If rx bufs are exhausted called after 50ms to attempt to refresh */
1889static void nv_do_rx_refill(unsigned long data)
1890{
1891	struct net_device *dev = (struct net_device *) data;
1892	struct fe_priv *np = netdev_priv(dev);
1893
1894	/* Just reschedule NAPI rx processing */
1895	napi_schedule(&np->napi);
1896}
1897
1898static void nv_init_rx(struct net_device *dev)
1899{
1900	struct fe_priv *np = netdev_priv(dev);
1901	int i;
1902
1903	np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
1904
1905	if (!nv_optimized(np))
1906		np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
1907	else
1908		np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
1909	np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
1910	np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
1911
1912	for (i = 0; i < np->rx_ring_size; i++) {
1913		if (!nv_optimized(np)) {
1914			np->rx_ring.orig[i].flaglen = 0;
1915			np->rx_ring.orig[i].buf = 0;
1916		} else {
1917			np->rx_ring.ex[i].flaglen = 0;
1918			np->rx_ring.ex[i].txvlan = 0;
1919			np->rx_ring.ex[i].bufhigh = 0;
1920			np->rx_ring.ex[i].buflow = 0;
1921		}
1922		np->rx_skb[i].skb = NULL;
1923		np->rx_skb[i].dma = 0;
1924	}
1925}
1926
1927static void nv_init_tx(struct net_device *dev)
1928{
1929	struct fe_priv *np = netdev_priv(dev);
1930	int i;
1931
1932	np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
1933
1934	if (!nv_optimized(np))
1935		np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
1936	else
1937		np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
1938	np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
1939	np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
1940	netdev_reset_queue(np->dev);
1941	np->tx_pkts_in_progress = 0;
1942	np->tx_change_owner = NULL;
1943	np->tx_end_flip = NULL;
1944	np->tx_stop = 0;
1945
1946	for (i = 0; i < np->tx_ring_size; i++) {
1947		if (!nv_optimized(np)) {
1948			np->tx_ring.orig[i].flaglen = 0;
1949			np->tx_ring.orig[i].buf = 0;
1950		} else {
1951			np->tx_ring.ex[i].flaglen = 0;
1952			np->tx_ring.ex[i].txvlan = 0;
1953			np->tx_ring.ex[i].bufhigh = 0;
1954			np->tx_ring.ex[i].buflow = 0;
1955		}
1956		np->tx_skb[i].skb = NULL;
1957		np->tx_skb[i].dma = 0;
1958		np->tx_skb[i].dma_len = 0;
1959		np->tx_skb[i].dma_single = 0;
1960		np->tx_skb[i].first_tx_desc = NULL;
1961		np->tx_skb[i].next_tx_ctx = NULL;
1962	}
1963}
1964
1965static int nv_init_ring(struct net_device *dev)
1966{
1967	struct fe_priv *np = netdev_priv(dev);
1968
1969	nv_init_tx(dev);
1970	nv_init_rx(dev);
1971
1972	if (!nv_optimized(np))
1973		return nv_alloc_rx(dev);
1974	else
1975		return nv_alloc_rx_optimized(dev);
1976}
1977
1978static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1979{
1980	if (tx_skb->dma) {
1981		if (tx_skb->dma_single)
1982			pci_unmap_single(np->pci_dev, tx_skb->dma,
1983					 tx_skb->dma_len,
1984					 PCI_DMA_TODEVICE);
1985		else
1986			pci_unmap_page(np->pci_dev, tx_skb->dma,
1987				       tx_skb->dma_len,
1988				       PCI_DMA_TODEVICE);
1989		tx_skb->dma = 0;
1990	}
1991}
1992
1993static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
1994{
1995	nv_unmap_txskb(np, tx_skb);
1996	if (tx_skb->skb) {
1997		dev_kfree_skb_any(tx_skb->skb);
1998		tx_skb->skb = NULL;
1999		return 1;
2000	}
2001	return 0;
2002}
2003
2004static void nv_drain_tx(struct net_device *dev)
2005{
2006	struct fe_priv *np = netdev_priv(dev);
2007	unsigned int i;
2008
2009	for (i = 0; i < np->tx_ring_size; i++) {
2010		if (!nv_optimized(np)) {
2011			np->tx_ring.orig[i].flaglen = 0;
2012			np->tx_ring.orig[i].buf = 0;
2013		} else {
2014			np->tx_ring.ex[i].flaglen = 0;
2015			np->tx_ring.ex[i].txvlan = 0;
2016			np->tx_ring.ex[i].bufhigh = 0;
2017			np->tx_ring.ex[i].buflow = 0;
2018		}
2019		if (nv_release_txskb(np, &np->tx_skb[i])) {
2020			u64_stats_update_begin(&np->swstats_tx_syncp);
2021			np->stat_tx_dropped++;
2022			u64_stats_update_end(&np->swstats_tx_syncp);
2023		}
2024		np->tx_skb[i].dma = 0;
2025		np->tx_skb[i].dma_len = 0;
2026		np->tx_skb[i].dma_single = 0;
2027		np->tx_skb[i].first_tx_desc = NULL;
2028		np->tx_skb[i].next_tx_ctx = NULL;
2029	}
2030	np->tx_pkts_in_progress = 0;
2031	np->tx_change_owner = NULL;
2032	np->tx_end_flip = NULL;
2033}
2034
2035static void nv_drain_rx(struct net_device *dev)
2036{
2037	struct fe_priv *np = netdev_priv(dev);
2038	int i;
2039
2040	for (i = 0; i < np->rx_ring_size; i++) {
2041		if (!nv_optimized(np)) {
2042			np->rx_ring.orig[i].flaglen = 0;
2043			np->rx_ring.orig[i].buf = 0;
2044		} else {
2045			np->rx_ring.ex[i].flaglen = 0;
2046			np->rx_ring.ex[i].txvlan = 0;
2047			np->rx_ring.ex[i].bufhigh = 0;
2048			np->rx_ring.ex[i].buflow = 0;
2049		}
2050		wmb();
2051		if (np->rx_skb[i].skb) {
2052			pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
2053					 (skb_end_pointer(np->rx_skb[i].skb) -
2054					  np->rx_skb[i].skb->data),
2055					 PCI_DMA_FROMDEVICE);
2056			dev_kfree_skb(np->rx_skb[i].skb);
2057			np->rx_skb[i].skb = NULL;
2058		}
2059	}
2060}
2061
2062static void nv_drain_rxtx(struct net_device *dev)
2063{
2064	nv_drain_tx(dev);
2065	nv_drain_rx(dev);
2066}
2067
2068static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
2069{
2070	return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
2071}
2072
2073static void nv_legacybackoff_reseed(struct net_device *dev)
2074{
2075	u8 __iomem *base = get_hwbase(dev);
2076	u32 reg;
2077	u32 low;
2078	int tx_status = 0;
2079
2080	reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
2081	get_random_bytes(&low, sizeof(low));
2082	reg |= low & NVREG_SLOTTIME_MASK;
2083
2084	/* Need to stop tx before change takes effect.
2085	 * Caller has already gained np->lock.
2086	 */
2087	tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
2088	if (tx_status)
2089		nv_stop_tx(dev);
2090	nv_stop_rx(dev);
2091	writel(reg, base + NvRegSlotTime);
2092	if (tx_status)
2093		nv_start_tx(dev);
2094	nv_start_rx(dev);
2095}
2096
2097/* Gear Backoff Seeds */
2098#define BACKOFF_SEEDSET_ROWS	8
2099#define BACKOFF_SEEDSET_LFSRS	15
2100
2101/* Known Good seed sets */
2102static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2103	{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2104	{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
2105	{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
2106	{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
2107	{266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
2108	{266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
2109	{366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800,  84},
2110	{466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
2111
2112static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
2113	{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2114	{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2115	{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
2116	{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2117	{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375,  30, 295},
2118	{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2119	{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
2120	{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
2121
2122static void nv_gear_backoff_reseed(struct net_device *dev)
2123{
2124	u8 __iomem *base = get_hwbase(dev);
2125	u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
2126	u32 temp, seedset, combinedSeed;
2127	int i;
2128
2129	/* Setup seed for free running LFSR */
2130	/* We are going to read the time stamp counter 3 times
2131	   and swizzle bits around to increase randomness */
2132	get_random_bytes(&miniseed1, sizeof(miniseed1));
2133	miniseed1 &= 0x0fff;
2134	if (miniseed1 == 0)
2135		miniseed1 = 0xabc;
2136
2137	get_random_bytes(&miniseed2, sizeof(miniseed2));
2138	miniseed2 &= 0x0fff;
2139	if (miniseed2 == 0)
2140		miniseed2 = 0xabc;
2141	miniseed2_reversed =
2142		((miniseed2 & 0xF00) >> 8) |
2143		 (miniseed2 & 0x0F0) |
2144		 ((miniseed2 & 0x00F) << 8);
2145
2146	get_random_bytes(&miniseed3, sizeof(miniseed3));
2147	miniseed3 &= 0x0fff;
2148	if (miniseed3 == 0)
2149		miniseed3 = 0xabc;
2150	miniseed3_reversed =
2151		((miniseed3 & 0xF00) >> 8) |
2152		 (miniseed3 & 0x0F0) |
2153		 ((miniseed3 & 0x00F) << 8);
2154
2155	combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
2156		       (miniseed2 ^ miniseed3_reversed);
2157
2158	/* Seeds can not be zero */
2159	if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
2160		combinedSeed |= 0x08;
2161	if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
2162		combinedSeed |= 0x8000;
2163
2164	/* No need to disable tx here */
2165	temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
2166	temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
2167	temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
2168	writel(temp, base + NvRegBackOffControl);
2169
2170	/* Setup seeds for all gear LFSRs. */
2171	get_random_bytes(&seedset, sizeof(seedset));
2172	seedset = seedset % BACKOFF_SEEDSET_ROWS;
2173	for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
2174		temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
2175		temp |= main_seedset[seedset][i-1] & 0x3ff;
2176		temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
2177		writel(temp, base + NvRegBackOffControl);
2178	}
2179}
2180
2181/*
2182 * nv_start_xmit: dev->hard_start_xmit function
2183 * Called with netif_tx_lock held.
2184 */
2185static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
2186{
2187	struct fe_priv *np = netdev_priv(dev);
2188	u32 tx_flags = 0;
2189	u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
2190	unsigned int fragments = skb_shinfo(skb)->nr_frags;
2191	unsigned int i;
2192	u32 offset = 0;
2193	u32 bcnt;
2194	u32 size = skb_headlen(skb);
2195	u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2196	u32 empty_slots;
2197	struct ring_desc *put_tx;
2198	struct ring_desc *start_tx;
2199	struct ring_desc *prev_tx;
2200	struct nv_skb_map *prev_tx_ctx;
2201	struct nv_skb_map *tmp_tx_ctx = NULL, *start_tx_ctx = NULL;
2202	unsigned long flags;
2203
2204	/* add fragments to entries count */
2205	for (i = 0; i < fragments; i++) {
2206		u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2207
2208		entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2209			   ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2210	}
2211
2212	spin_lock_irqsave(&np->lock, flags);
2213	empty_slots = nv_get_empty_tx_slots(np);
2214	if (unlikely(empty_slots <= entries)) {
2215		netif_stop_queue(dev);
2216		np->tx_stop = 1;
2217		spin_unlock_irqrestore(&np->lock, flags);
2218		return NETDEV_TX_BUSY;
2219	}
2220	spin_unlock_irqrestore(&np->lock, flags);
2221
2222	start_tx = put_tx = np->put_tx.orig;
2223
2224	/* setup the header buffer */
2225	do {
2226		prev_tx = put_tx;
2227		prev_tx_ctx = np->put_tx_ctx;
2228		bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2229		np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2230						PCI_DMA_TODEVICE);
2231		if (pci_dma_mapping_error(np->pci_dev,
2232					  np->put_tx_ctx->dma)) {
2233			/* on DMA mapping error - drop the packet */
2234			dev_kfree_skb_any(skb);
2235			u64_stats_update_begin(&np->swstats_tx_syncp);
2236			np->stat_tx_dropped++;
2237			u64_stats_update_end(&np->swstats_tx_syncp);
2238			return NETDEV_TX_OK;
2239		}
2240		np->put_tx_ctx->dma_len = bcnt;
2241		np->put_tx_ctx->dma_single = 1;
2242		put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2243		put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2244
2245		tx_flags = np->tx_flags;
2246		offset += bcnt;
2247		size -= bcnt;
2248		if (unlikely(put_tx++ == np->last_tx.orig))
2249			put_tx = np->first_tx.orig;
2250		if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2251			np->put_tx_ctx = np->first_tx_ctx;
2252	} while (size);
2253
2254	/* setup the fragments */
2255	for (i = 0; i < fragments; i++) {
2256		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2257		u32 frag_size = skb_frag_size(frag);
2258		offset = 0;
2259
2260		do {
2261			prev_tx = put_tx;
2262			prev_tx_ctx = np->put_tx_ctx;
2263			if (!start_tx_ctx)
2264				start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2265
2266			bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2267			np->put_tx_ctx->dma = skb_frag_dma_map(
2268							&np->pci_dev->dev,
2269							frag, offset,
2270							bcnt,
2271							DMA_TO_DEVICE);
2272			if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
2273
2274				/* Unwind the mapped fragments */
2275				do {
2276					nv_unmap_txskb(np, start_tx_ctx);
2277					if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2278						tmp_tx_ctx = np->first_tx_ctx;
2279				} while (tmp_tx_ctx != np->put_tx_ctx);
2280				dev_kfree_skb_any(skb);
2281				np->put_tx_ctx = start_tx_ctx;
2282				u64_stats_update_begin(&np->swstats_tx_syncp);
2283				np->stat_tx_dropped++;
2284				u64_stats_update_end(&np->swstats_tx_syncp);
2285				return NETDEV_TX_OK;
2286			}
2287
2288			np->put_tx_ctx->dma_len = bcnt;
2289			np->put_tx_ctx->dma_single = 0;
2290			put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
2291			put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2292
2293			offset += bcnt;
2294			frag_size -= bcnt;
2295			if (unlikely(put_tx++ == np->last_tx.orig))
2296				put_tx = np->first_tx.orig;
2297			if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2298				np->put_tx_ctx = np->first_tx_ctx;
2299		} while (frag_size);
2300	}
2301
2302	/* set last fragment flag  */
2303	prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
2304
2305	/* save skb in this slot's context area */
2306	prev_tx_ctx->skb = skb;
2307
2308	if (skb_is_gso(skb))
2309		tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2310	else
2311		tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2312			 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2313
2314	spin_lock_irqsave(&np->lock, flags);
2315
2316	/* set tx flags */
2317	start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2318
2319	netdev_sent_queue(np->dev, skb->len);
2320
2321	skb_tx_timestamp(skb);
2322
2323	np->put_tx.orig = put_tx;
2324
2325	spin_unlock_irqrestore(&np->lock, flags);
2326
2327	writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2328	return NETDEV_TX_OK;
2329}
2330
2331static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
2332					   struct net_device *dev)
2333{
2334	struct fe_priv *np = netdev_priv(dev);
2335	u32 tx_flags = 0;
2336	u32 tx_flags_extra;
2337	unsigned int fragments = skb_shinfo(skb)->nr_frags;
2338	unsigned int i;
2339	u32 offset = 0;
2340	u32 bcnt;
2341	u32 size = skb_headlen(skb);
2342	u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2343	u32 empty_slots;
2344	struct ring_desc_ex *put_tx;
2345	struct ring_desc_ex *start_tx;
2346	struct ring_desc_ex *prev_tx;
2347	struct nv_skb_map *prev_tx_ctx;
2348	struct nv_skb_map *start_tx_ctx = NULL;
2349	struct nv_skb_map *tmp_tx_ctx = NULL;
2350	unsigned long flags;
2351
2352	/* add fragments to entries count */
2353	for (i = 0; i < fragments; i++) {
2354		u32 frag_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
2355
2356		entries += (frag_size >> NV_TX2_TSO_MAX_SHIFT) +
2357			   ((frag_size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
2358	}
2359
2360	spin_lock_irqsave(&np->lock, flags);
2361	empty_slots = nv_get_empty_tx_slots(np);
2362	if (unlikely(empty_slots <= entries)) {
2363		netif_stop_queue(dev);
2364		np->tx_stop = 1;
2365		spin_unlock_irqrestore(&np->lock, flags);
2366		return NETDEV_TX_BUSY;
2367	}
2368	spin_unlock_irqrestore(&np->lock, flags);
2369
2370	start_tx = put_tx = np->put_tx.ex;
2371	start_tx_ctx = np->put_tx_ctx;
2372
2373	/* setup the header buffer */
2374	do {
2375		prev_tx = put_tx;
2376		prev_tx_ctx = np->put_tx_ctx;
2377		bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
2378		np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
2379						PCI_DMA_TODEVICE);
2380		if (pci_dma_mapping_error(np->pci_dev,
2381					  np->put_tx_ctx->dma)) {
2382			/* on DMA mapping error - drop the packet */
2383			dev_kfree_skb_any(skb);
2384			u64_stats_update_begin(&np->swstats_tx_syncp);
2385			np->stat_tx_dropped++;
2386			u64_stats_update_end(&np->swstats_tx_syncp);
2387			return NETDEV_TX_OK;
2388		}
2389		np->put_tx_ctx->dma_len = bcnt;
2390		np->put_tx_ctx->dma_single = 1;
2391		put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2392		put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2393		put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2394
2395		tx_flags = NV_TX2_VALID;
2396		offset += bcnt;
2397		size -= bcnt;
2398		if (unlikely(put_tx++ == np->last_tx.ex))
2399			put_tx = np->first_tx.ex;
2400		if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2401			np->put_tx_ctx = np->first_tx_ctx;
2402	} while (size);
2403
2404	/* setup the fragments */
2405	for (i = 0; i < fragments; i++) {
2406		skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2407		u32 frag_size = skb_frag_size(frag);
2408		offset = 0;
2409
2410		do {
2411			prev_tx = put_tx;
2412			prev_tx_ctx = np->put_tx_ctx;
2413			bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
2414			if (!start_tx_ctx)
2415				start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
2416			np->put_tx_ctx->dma = skb_frag_dma_map(
2417							&np->pci_dev->dev,
2418							frag, offset,
2419							bcnt,
2420							DMA_TO_DEVICE);
2421
2422			if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
2423
2424				/* Unwind the mapped fragments */
2425				do {
2426					nv_unmap_txskb(np, start_tx_ctx);
2427					if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
2428						tmp_tx_ctx = np->first_tx_ctx;
2429				} while (tmp_tx_ctx != np->put_tx_ctx);
2430				dev_kfree_skb_any(skb);
2431				np->put_tx_ctx = start_tx_ctx;
2432				u64_stats_update_begin(&np->swstats_tx_syncp);
2433				np->stat_tx_dropped++;
2434				u64_stats_update_end(&np->swstats_tx_syncp);
2435				return NETDEV_TX_OK;
2436			}
2437			np->put_tx_ctx->dma_len = bcnt;
2438			np->put_tx_ctx->dma_single = 0;
2439			put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
2440			put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
2441			put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
2442
2443			offset += bcnt;
2444			frag_size -= bcnt;
2445			if (unlikely(put_tx++ == np->last_tx.ex))
2446				put_tx = np->first_tx.ex;
2447			if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
2448				np->put_tx_ctx = np->first_tx_ctx;
2449		} while (frag_size);
2450	}
2451
2452	/* set last fragment flag  */
2453	prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
2454
2455	/* save skb in this slot's context area */
2456	prev_tx_ctx->skb = skb;
2457
2458	if (skb_is_gso(skb))
2459		tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
2460	else
2461		tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
2462			 NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
2463
2464	/* vlan tag */
2465	if (skb_vlan_tag_present(skb))
2466		start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
2467					skb_vlan_tag_get(skb));
2468	else
2469		start_tx->txvlan = 0;
2470
2471	spin_lock_irqsave(&np->lock, flags);
2472
2473	if (np->tx_limit) {
2474		/* Limit the number of outstanding tx. Setup all fragments, but
2475		 * do not set the VALID bit on the first descriptor. Save a pointer
2476		 * to that descriptor and also for next skb_map element.
2477		 */
2478
2479		if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
2480			if (!np->tx_change_owner)
2481				np->tx_change_owner = start_tx_ctx;
2482
2483			/* remove VALID bit */
2484			tx_flags &= ~NV_TX2_VALID;
2485			start_tx_ctx->first_tx_desc = start_tx;
2486			start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
2487			np->tx_end_flip = np->put_tx_ctx;
2488		} else {
2489			np->tx_pkts_in_progress++;
2490		}
2491	}
2492
2493	/* set tx flags */
2494	start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
2495
2496	netdev_sent_queue(np->dev, skb->len);
2497
2498	skb_tx_timestamp(skb);
2499
2500	np->put_tx.ex = put_tx;
2501
2502	spin_unlock_irqrestore(&np->lock, flags);
2503
2504	writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2505	return NETDEV_TX_OK;
2506}
2507
2508static inline void nv_tx_flip_ownership(struct net_device *dev)
2509{
2510	struct fe_priv *np = netdev_priv(dev);
2511
2512	np->tx_pkts_in_progress--;
2513	if (np->tx_change_owner) {
2514		np->tx_change_owner->first_tx_desc->flaglen |=
2515			cpu_to_le32(NV_TX2_VALID);
2516		np->tx_pkts_in_progress++;
2517
2518		np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
2519		if (np->tx_change_owner == np->tx_end_flip)
2520			np->tx_change_owner = NULL;
2521
2522		writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
2523	}
2524}
2525
2526/*
2527 * nv_tx_done: check for completed packets, release the skbs.
2528 *
2529 * Caller must own np->lock.
2530 */
2531static int nv_tx_done(struct net_device *dev, int limit)
2532{
2533	struct fe_priv *np = netdev_priv(dev);
2534	u32 flags;
2535	int tx_work = 0;
2536	struct ring_desc *orig_get_tx = np->get_tx.orig;
2537	unsigned int bytes_compl = 0;
2538
2539	while ((np->get_tx.orig != np->put_tx.orig) &&
2540	       !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
2541	       (tx_work < limit)) {
2542
2543		nv_unmap_txskb(np, np->get_tx_ctx);
2544
2545		if (np->desc_ver == DESC_VER_1) {
2546			if (flags & NV_TX_LASTPACKET) {
2547				if (flags & NV_TX_ERROR) {
2548					if ((flags & NV_TX_RETRYERROR)
2549					    && !(flags & NV_TX_RETRYCOUNT_MASK))
2550						nv_legacybackoff_reseed(dev);
2551				} else {
2552					u64_stats_update_begin(&np->swstats_tx_syncp);
2553					np->stat_tx_packets++;
2554					np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2555					u64_stats_update_end(&np->swstats_tx_syncp);
2556				}
2557				bytes_compl += np->get_tx_ctx->skb->len;
2558				dev_kfree_skb_any(np->get_tx_ctx->skb);
2559				np->get_tx_ctx->skb = NULL;
2560				tx_work++;
2561			}
2562		} else {
2563			if (flags & NV_TX2_LASTPACKET) {
2564				if (flags & NV_TX2_ERROR) {
2565					if ((flags & NV_TX2_RETRYERROR)
2566					    && !(flags & NV_TX2_RETRYCOUNT_MASK))
2567						nv_legacybackoff_reseed(dev);
2568				} else {
2569					u64_stats_update_begin(&np->swstats_tx_syncp);
2570					np->stat_tx_packets++;
2571					np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2572					u64_stats_update_end(&np->swstats_tx_syncp);
2573				}
2574				bytes_compl += np->get_tx_ctx->skb->len;
2575				dev_kfree_skb_any(np->get_tx_ctx->skb);
2576				np->get_tx_ctx->skb = NULL;
2577				tx_work++;
2578			}
2579		}
2580		if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
2581			np->get_tx.orig = np->first_tx.orig;
2582		if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2583			np->get_tx_ctx = np->first_tx_ctx;
2584	}
2585
2586	netdev_completed_queue(np->dev, tx_work, bytes_compl);
2587
2588	if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
2589		np->tx_stop = 0;
2590		netif_wake_queue(dev);
2591	}
2592	return tx_work;
2593}
2594
2595static int nv_tx_done_optimized(struct net_device *dev, int limit)
2596{
2597	struct fe_priv *np = netdev_priv(dev);
2598	u32 flags;
2599	int tx_work = 0;
2600	struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
2601	unsigned long bytes_cleaned = 0;
2602
2603	while ((np->get_tx.ex != np->put_tx.ex) &&
2604	       !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
2605	       (tx_work < limit)) {
2606
2607		nv_unmap_txskb(np, np->get_tx_ctx);
2608
2609		if (flags & NV_TX2_LASTPACKET) {
2610			if (flags & NV_TX2_ERROR) {
2611				if ((flags & NV_TX2_RETRYERROR)
2612				    && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
2613					if (np->driver_data & DEV_HAS_GEAR_MODE)
2614						nv_gear_backoff_reseed(dev);
2615					else
2616						nv_legacybackoff_reseed(dev);
2617				}
2618			} else {
2619				u64_stats_update_begin(&np->swstats_tx_syncp);
2620				np->stat_tx_packets++;
2621				np->stat_tx_bytes += np->get_tx_ctx->skb->len;
2622				u64_stats_update_end(&np->swstats_tx_syncp);
2623			}
2624
2625			bytes_cleaned += np->get_tx_ctx->skb->len;
2626			dev_kfree_skb_any(np->get_tx_ctx->skb);
2627			np->get_tx_ctx->skb = NULL;
2628			tx_work++;
2629
2630			if (np->tx_limit)
2631				nv_tx_flip_ownership(dev);
2632		}
2633
2634		if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
2635			np->get_tx.ex = np->first_tx.ex;
2636		if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
2637			np->get_tx_ctx = np->first_tx_ctx;
2638	}
2639
2640	netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
2641
2642	if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
2643		np->tx_stop = 0;
2644		netif_wake_queue(dev);
2645	}
2646	return tx_work;
2647}
2648
2649/*
2650 * nv_tx_timeout: dev->tx_timeout function
2651 * Called with netif_tx_lock held.
2652 */
2653static void nv_tx_timeout(struct net_device *dev)
2654{
2655	struct fe_priv *np = netdev_priv(dev);
2656	u8 __iomem *base = get_hwbase(dev);
2657	u32 status;
2658	union ring_type put_tx;
2659	int saved_tx_limit;
2660
2661	if (np->msi_flags & NV_MSI_X_ENABLED)
2662		status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
2663	else
2664		status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
2665
2666	netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
2667
2668	if (unlikely(debug_tx_timeout)) {
2669		int i;
2670
2671		netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
2672		netdev_info(dev, "Dumping tx registers\n");
2673		for (i = 0; i <= np->register_size; i += 32) {
2674			netdev_info(dev,
2675				    "%3x: %08x %08x %08x %08x "
2676				    "%08x %08x %08x %08x\n",
2677				    i,
2678				    readl(base + i + 0), readl(base + i + 4),
2679				    readl(base + i + 8), readl(base + i + 12),
2680				    readl(base + i + 16), readl(base + i + 20),
2681				    readl(base + i + 24), readl(base + i + 28));
2682		}
2683		netdev_info(dev, "Dumping tx ring\n");
2684		for (i = 0; i < np->tx_ring_size; i += 4) {
2685			if (!nv_optimized(np)) {
2686				netdev_info(dev,
2687					    "%03x: %08x %08x // %08x %08x "
2688					    "// %08x %08x // %08x %08x\n",
2689					    i,
2690					    le32_to_cpu(np->tx_ring.orig[i].buf),
2691					    le32_to_cpu(np->tx_ring.orig[i].flaglen),
2692					    le32_to_cpu(np->tx_ring.orig[i+1].buf),
2693					    le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
2694					    le32_to_cpu(np->tx_ring.orig[i+2].buf),
2695					    le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
2696					    le32_to_cpu(np->tx_ring.orig[i+3].buf),
2697					    le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
2698			} else {
2699				netdev_info(dev,
2700					    "%03x: %08x %08x %08x "
2701					    "// %08x %08x %08x "
2702					    "// %08x %08x %08x "
2703					    "// %08x %08x %08x\n",
2704					    i,
2705					    le32_to_cpu(np->tx_ring.ex[i].bufhigh),
2706					    le32_to_cpu(np->tx_ring.ex[i].buflow),
2707					    le32_to_cpu(np->tx_ring.ex[i].flaglen),
2708					    le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
2709					    le32_to_cpu(np->tx_ring.ex[i+1].buflow),
2710					    le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
2711					    le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
2712					    le32_to_cpu(np->tx_ring.ex[i+2].buflow),
2713					    le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
2714					    le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
2715					    le32_to_cpu(np->tx_ring.ex[i+3].buflow),
2716					    le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
2717			}
2718		}
2719	}
2720
2721	spin_lock_irq(&np->lock);
2722
2723	/* 1) stop tx engine */
2724	nv_stop_tx(dev);
2725
2726	/* 2) complete any outstanding tx and do not give HW any limited tx pkts */
2727	saved_tx_limit = np->tx_limit;
2728	np->tx_limit = 0; /* prevent giving HW any limited pkts */
2729	np->tx_stop = 0;  /* prevent waking tx queue */
2730	if (!nv_optimized(np))
2731		nv_tx_done(dev, np->tx_ring_size);
2732	else
2733		nv_tx_done_optimized(dev, np->tx_ring_size);
2734
2735	/* save current HW position */
2736	if (np->tx_change_owner)
2737		put_tx.ex = np->tx_change_owner->first_tx_desc;
2738	else
2739		put_tx = np->put_tx;
2740
2741	/* 3) clear all tx state */
2742	nv_drain_tx(dev);
2743	nv_init_tx(dev);
2744
2745	/* 4) restore state to current HW position */
2746	np->get_tx = np->put_tx = put_tx;
2747	np->tx_limit = saved_tx_limit;
2748
2749	/* 5) restart tx engine */
2750	nv_start_tx(dev);
2751	netif_wake_queue(dev);
2752	spin_unlock_irq(&np->lock);
2753}
2754
2755/*
2756 * Called when the nic notices a mismatch between the actual data len on the
2757 * wire and the len indicated in the 802 header
2758 */
2759static int nv_getlen(struct net_device *dev, void *packet, int datalen)
2760{
2761	int hdrlen;	/* length of the 802 header */
2762	int protolen;	/* length as stored in the proto field */
2763
2764	/* 1) calculate len according to header */
2765	if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
2766		protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
2767		hdrlen = VLAN_HLEN;
2768	} else {
2769		protolen = ntohs(((struct ethhdr *)packet)->h_proto);
2770		hdrlen = ETH_HLEN;
2771	}
2772	if (protolen > ETH_DATA_LEN)
2773		return datalen; /* Value in proto field not a len, no checks possible */
2774
2775	protolen += hdrlen;
2776	/* consistency checks: */
2777	if (datalen > ETH_ZLEN) {
2778		if (datalen >= protolen) {
2779			/* more data on wire than in 802 header, trim of
2780			 * additional data.
2781			 */
2782			return protolen;
2783		} else {
2784			/* less data on wire than mentioned in header.
2785			 * Discard the packet.
2786			 */
2787			return -1;
2788		}
2789	} else {
2790		/* short packet. Accept only if 802 values are also short */
2791		if (protolen > ETH_ZLEN) {
2792			return -1;
2793		}
2794		return datalen;
2795	}
2796}
2797
2798static int nv_rx_process(struct net_device *dev, int limit)
2799{
2800	struct fe_priv *np = netdev_priv(dev);
2801	u32 flags;
2802	int rx_work = 0;
2803	struct sk_buff *skb;
2804	int len;
2805
2806	while ((np->get_rx.orig != np->put_rx.orig) &&
2807	      !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
2808		(rx_work < limit)) {
2809
2810		/*
2811		 * the packet is for us - immediately tear down the pci mapping.
2812		 * TODO: check if a prefetch of the first cacheline improves
2813		 * the performance.
2814		 */
2815		pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2816				np->get_rx_ctx->dma_len,
2817				PCI_DMA_FROMDEVICE);
2818		skb = np->get_rx_ctx->skb;
2819		np->get_rx_ctx->skb = NULL;
2820
2821		/* look at what we actually got: */
2822		if (np->desc_ver == DESC_VER_1) {
2823			if (likely(flags & NV_RX_DESCRIPTORVALID)) {
2824				len = flags & LEN_MASK_V1;
2825				if (unlikely(flags & NV_RX_ERROR)) {
2826					if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
2827						len = nv_getlen(dev, skb->data, len);
2828						if (len < 0) {
2829							dev_kfree_skb(skb);
2830							goto next_pkt;
2831						}
2832					}
2833					/* framing errors are soft errors */
2834					else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
2835						if (flags & NV_RX_SUBTRACT1)
2836							len--;
2837					}
2838					/* the rest are hard errors */
2839					else {
2840						if (flags & NV_RX_MISSEDFRAME) {
2841							u64_stats_update_begin(&np->swstats_rx_syncp);
2842							np->stat_rx_missed_errors++;
2843							u64_stats_update_end(&np->swstats_rx_syncp);
2844						}
2845						dev_kfree_skb(skb);
2846						goto next_pkt;
2847					}
2848				}
2849			} else {
2850				dev_kfree_skb(skb);
2851				goto next_pkt;
2852			}
2853		} else {
2854			if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2855				len = flags & LEN_MASK_V2;
2856				if (unlikely(flags & NV_RX2_ERROR)) {
2857					if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2858						len = nv_getlen(dev, skb->data, len);
2859						if (len < 0) {
2860							dev_kfree_skb(skb);
2861							goto next_pkt;
2862						}
2863					}
2864					/* framing errors are soft errors */
2865					else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2866						if (flags & NV_RX2_SUBTRACT1)
2867							len--;
2868					}
2869					/* the rest are hard errors */
2870					else {
2871						dev_kfree_skb(skb);
2872						goto next_pkt;
2873					}
2874				}
2875				if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2876				    ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2877					skb->ip_summed = CHECKSUM_UNNECESSARY;
2878			} else {
2879				dev_kfree_skb(skb);
2880				goto next_pkt;
2881			}
2882		}
2883		/* got a valid packet - forward it to the network core */
2884		skb_put(skb, len);
2885		skb->protocol = eth_type_trans(skb, dev);
2886		napi_gro_receive(&np->napi, skb);
2887		u64_stats_update_begin(&np->swstats_rx_syncp);
2888		np->stat_rx_packets++;
2889		np->stat_rx_bytes += len;
2890		u64_stats_update_end(&np->swstats_rx_syncp);
2891next_pkt:
2892		if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
2893			np->get_rx.orig = np->first_rx.orig;
2894		if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2895			np->get_rx_ctx = np->first_rx_ctx;
2896
2897		rx_work++;
2898	}
2899
2900	return rx_work;
2901}
2902
2903static int nv_rx_process_optimized(struct net_device *dev, int limit)
2904{
2905	struct fe_priv *np = netdev_priv(dev);
2906	u32 flags;
2907	u32 vlanflags = 0;
2908	int rx_work = 0;
2909	struct sk_buff *skb;
2910	int len;
2911
2912	while ((np->get_rx.ex != np->put_rx.ex) &&
2913	      !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
2914	      (rx_work < limit)) {
2915
2916		/*
2917		 * the packet is for us - immediately tear down the pci mapping.
2918		 * TODO: check if a prefetch of the first cacheline improves
2919		 * the performance.
2920		 */
2921		pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
2922				np->get_rx_ctx->dma_len,
2923				PCI_DMA_FROMDEVICE);
2924		skb = np->get_rx_ctx->skb;
2925		np->get_rx_ctx->skb = NULL;
2926
2927		/* look at what we actually got: */
2928		if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
2929			len = flags & LEN_MASK_V2;
2930			if (unlikely(flags & NV_RX2_ERROR)) {
2931				if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
2932					len = nv_getlen(dev, skb->data, len);
2933					if (len < 0) {
2934						dev_kfree_skb(skb);
2935						goto next_pkt;
2936					}
2937				}
2938				/* framing errors are soft errors */
2939				else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
2940					if (flags & NV_RX2_SUBTRACT1)
2941						len--;
2942				}
2943				/* the rest are hard errors */
2944				else {
2945					dev_kfree_skb(skb);
2946					goto next_pkt;
2947				}
2948			}
2949
2950			if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
2951			    ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP))   /*ip and udp */
2952				skb->ip_summed = CHECKSUM_UNNECESSARY;
2953
2954			/* got a valid packet - forward it to the network core */
2955			skb_put(skb, len);
2956			skb->protocol = eth_type_trans(skb, dev);
2957			prefetch(skb->data);
2958
2959			vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
2960
2961			/*
2962			 * There's need to check for NETIF_F_HW_VLAN_CTAG_RX
2963			 * here. Even if vlan rx accel is disabled,
2964			 * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
2965			 */
2966			if (dev->features & NETIF_F_HW_VLAN_CTAG_RX &&
2967			    vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
2968				u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
2969
2970				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2971			}
2972			napi_gro_receive(&np->napi, skb);
2973			u64_stats_update_begin(&np->swstats_rx_syncp);
2974			np->stat_rx_packets++;
2975			np->stat_rx_bytes += len;
2976			u64_stats_update_end(&np->swstats_rx_syncp);
2977		} else {
2978			dev_kfree_skb(skb);
2979		}
2980next_pkt:
2981		if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
2982			np->get_rx.ex = np->first_rx.ex;
2983		if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
2984			np->get_rx_ctx = np->first_rx_ctx;
2985
2986		rx_work++;
2987	}
2988
2989	return rx_work;
2990}
2991
2992static void set_bufsize(struct net_device *dev)
2993{
2994	struct fe_priv *np = netdev_priv(dev);
2995
2996	if (dev->mtu <= ETH_DATA_LEN)
2997		np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
2998	else
2999		np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
3000}
3001
3002/*
3003 * nv_change_mtu: dev->change_mtu function
3004 * Called with dev_base_lock held for read.
3005 */
3006static int nv_change_mtu(struct net_device *dev, int new_mtu)
3007{
3008	struct fe_priv *np = netdev_priv(dev);
3009	int old_mtu;
3010
3011	if (new_mtu < 64 || new_mtu > np->pkt_limit)
3012		return -EINVAL;
3013
3014	old_mtu = dev->mtu;
3015	dev->mtu = new_mtu;
3016
3017	/* return early if the buffer sizes will not change */
3018	if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
3019		return 0;
3020	if (old_mtu == new_mtu)
3021		return 0;
3022
3023	/* synchronized against open : rtnl_lock() held by caller */
3024	if (netif_running(dev)) {
3025		u8 __iomem *base = get_hwbase(dev);
3026		/*
3027		 * It seems that the nic preloads valid ring entries into an
3028		 * internal buffer. The procedure for flushing everything is
3029		 * guessed, there is probably a simpler approach.
3030		 * Changing the MTU is a rare event, it shouldn't matter.
3031		 */
3032		nv_disable_irq(dev);
3033		nv_napi_disable(dev);
3034		netif_tx_lock_bh(dev);
3035		netif_addr_lock(dev);
3036		spin_lock(&np->lock);
3037		/* stop engines */
3038		nv_stop_rxtx(dev);
3039		nv_txrx_reset(dev);
3040		/* drain rx queue */
3041		nv_drain_rxtx(dev);
3042		/* reinit driver view of the rx queue */
3043		set_bufsize(dev);
3044		if (nv_init_ring(dev)) {
3045			if (!np->in_shutdown)
3046				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3047		}
3048		/* reinit nic view of the rx queue */
3049		writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3050		setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3051		writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3052			base + NvRegRingSizes);
3053		pci_push(base);
3054		writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3055		pci_push(base);
3056
3057		/* restart rx engine */
3058		nv_start_rxtx(dev);
3059		spin_unlock(&np->lock);
3060		netif_addr_unlock(dev);
3061		netif_tx_unlock_bh(dev);
3062		nv_napi_enable(dev);
3063		nv_enable_irq(dev);
3064	}
3065	return 0;
3066}
3067
3068static void nv_copy_mac_to_hw(struct net_device *dev)
3069{
3070	u8 __iomem *base = get_hwbase(dev);
3071	u32 mac[2];
3072
3073	mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3074			(dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3075	mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3076
3077	writel(mac[0], base + NvRegMacAddrA);
3078	writel(mac[1], base + NvRegMacAddrB);
3079}
3080
3081/*
3082 * nv_set_mac_address: dev->set_mac_address function
3083 * Called with rtnl_lock() held.
3084 */
3085static int nv_set_mac_address(struct net_device *dev, void *addr)
3086{
3087	struct fe_priv *np = netdev_priv(dev);
3088	struct sockaddr *macaddr = (struct sockaddr *)addr;
3089
3090	if (!is_valid_ether_addr(macaddr->sa_data))
3091		return -EADDRNOTAVAIL;
3092
3093	/* synchronized against open : rtnl_lock() held by caller */
3094	memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
3095
3096	if (netif_running(dev)) {
3097		netif_tx_lock_bh(dev);
3098		netif_addr_lock(dev);
3099		spin_lock_irq(&np->lock);
3100
3101		/* stop rx engine */
3102		nv_stop_rx(dev);
3103
3104		/* set mac address */
3105		nv_copy_mac_to_hw(dev);
3106
3107		/* restart rx engine */
3108		nv_start_rx(dev);
3109		spin_unlock_irq(&np->lock);
3110		netif_addr_unlock(dev);
3111		netif_tx_unlock_bh(dev);
3112	} else {
3113		nv_copy_mac_to_hw(dev);
3114	}
3115	return 0;
3116}
3117
3118/*
3119 * nv_set_multicast: dev->set_multicast function
3120 * Called with netif_tx_lock held.
3121 */
3122static void nv_set_multicast(struct net_device *dev)
3123{
3124	struct fe_priv *np = netdev_priv(dev);
3125	u8 __iomem *base = get_hwbase(dev);
3126	u32 addr[2];
3127	u32 mask[2];
3128	u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3129
3130	memset(addr, 0, sizeof(addr));
3131	memset(mask, 0, sizeof(mask));
3132
3133	if (dev->flags & IFF_PROMISC) {
3134		pff |= NVREG_PFF_PROMISC;
3135	} else {
3136		pff |= NVREG_PFF_MYADDR;
3137
3138		if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3139			u32 alwaysOff[2];
3140			u32 alwaysOn[2];
3141
3142			alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3143			if (dev->flags & IFF_ALLMULTI) {
3144				alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3145			} else {
3146				struct netdev_hw_addr *ha;
3147
3148				netdev_for_each_mc_addr(ha, dev) {
3149					unsigned char *hw_addr = ha->addr;
3150					u32 a, b;
3151
3152					a = le32_to_cpu(*(__le32 *) hw_addr);
3153					b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3154					alwaysOn[0] &= a;
3155					alwaysOff[0] &= ~a;
3156					alwaysOn[1] &= b;
3157					alwaysOff[1] &= ~b;
3158				}
3159			}
3160			addr[0] = alwaysOn[0];
3161			addr[1] = alwaysOn[1];
3162			mask[0] = alwaysOn[0] | alwaysOff[0];
3163			mask[1] = alwaysOn[1] | alwaysOff[1];
3164		} else {
3165			mask[0] = NVREG_MCASTMASKA_NONE;
3166			mask[1] = NVREG_MCASTMASKB_NONE;
3167		}
3168	}
3169	addr[0] |= NVREG_MCASTADDRA_FORCE;
3170	pff |= NVREG_PFF_ALWAYS;
3171	spin_lock_irq(&np->lock);
3172	nv_stop_rx(dev);
3173	writel(addr[0], base + NvRegMulticastAddrA);
3174	writel(addr[1], base + NvRegMulticastAddrB);
3175	writel(mask[0], base + NvRegMulticastMaskA);
3176	writel(mask[1], base + NvRegMulticastMaskB);
3177	writel(pff, base + NvRegPacketFilterFlags);
3178	nv_start_rx(dev);
3179	spin_unlock_irq(&np->lock);
3180}
3181
3182static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3183{
3184	struct fe_priv *np = netdev_priv(dev);
3185	u8 __iomem *base = get_hwbase(dev);
3186
3187	np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3188
3189	if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3190		u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3191		if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3192			writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3193			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3194		} else {
3195			writel(pff, base + NvRegPacketFilterFlags);
3196		}
3197	}
3198	if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3199		u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3200		if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3201			u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3202			if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3203				pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3204			if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3205				pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3206				/* limit the number of tx pause frames to a default of 8 */
3207				writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3208			}
3209			writel(pause_enable,  base + NvRegTxPauseFrame);
3210			writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3211			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3212		} else {
3213			writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3214			writel(regmisc, base + NvRegMisc1);
3215		}
3216	}
3217}
3218
3219static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3220{
3221	struct fe_priv *np = netdev_priv(dev);
3222	u8 __iomem *base = get_hwbase(dev);
3223	u32 phyreg, txreg;
3224	int mii_status;
3225
3226	np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3227	np->duplex = duplex;
3228
3229	/* see if gigabit phy */
3230	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3231	if (mii_status & PHY_GIGABIT) {
3232		np->gigabit = PHY_GIGABIT;
3233		phyreg = readl(base + NvRegSlotTime);
3234		phyreg &= ~(0x3FF00);
3235		if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3236			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3237		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3238			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3239		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3240			phyreg |= NVREG_SLOTTIME_1000_FULL;
3241		writel(phyreg, base + NvRegSlotTime);
3242	}
3243
3244	phyreg = readl(base + NvRegPhyInterface);
3245	phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3246	if (np->duplex == 0)
3247		phyreg |= PHY_HALF;
3248	if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3249		phyreg |= PHY_100;
3250	else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3251							NVREG_LINKSPEED_1000)
3252		phyreg |= PHY_1000;
3253	writel(phyreg, base + NvRegPhyInterface);
3254
3255	if (phyreg & PHY_RGMII) {
3256		if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3257							NVREG_LINKSPEED_1000)
3258			txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3259		else
3260			txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3261	} else {
3262		txreg = NVREG_TX_DEFERRAL_DEFAULT;
3263	}
3264	writel(txreg, base + NvRegTxDeferral);
3265
3266	if (np->desc_ver == DESC_VER_1) {
3267		txreg = NVREG_TX_WM_DESC1_DEFAULT;
3268	} else {
3269		if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3270					 NVREG_LINKSPEED_1000)
3271			txreg = NVREG_TX_WM_DESC2_3_1000;
3272		else
3273			txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3274	}
3275	writel(txreg, base + NvRegTxWatermark);
3276
3277	writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3278			base + NvRegMisc1);
3279	pci_push(base);
3280	writel(np->linkspeed, base + NvRegLinkSpeed);
3281	pci_push(base);
3282
3283	return;
3284}
3285
3286/**
3287 * nv_update_linkspeed - Setup the MAC according to the link partner
3288 * @dev: Network device to be configured
3289 *
3290 * The function queries the PHY and checks if there is a link partner.
3291 * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3292 * set to 10 MBit HD.
3293 *
3294 * The function returns 0 if there is no link partner and 1 if there is
3295 * a good link partner.
3296 */
3297static int nv_update_linkspeed(struct net_device *dev)
3298{
3299	struct fe_priv *np = netdev_priv(dev);
3300	u8 __iomem *base = get_hwbase(dev);
3301	int adv = 0;
3302	int lpa = 0;
3303	int adv_lpa, adv_pause, lpa_pause;
3304	int newls = np->linkspeed;
3305	int newdup = np->duplex;
3306	int mii_status;
3307	u32 bmcr;
3308	int retval = 0;
3309	u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3310	u32 txrxFlags = 0;
3311	u32 phy_exp;
3312
3313	/* If device loopback is enabled, set carrier on and enable max link
3314	 * speed.
3315	 */
3316	bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3317	if (bmcr & BMCR_LOOPBACK) {
3318		if (netif_running(dev)) {
3319			nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3320			if (!netif_carrier_ok(dev))
3321				netif_carrier_on(dev);
3322		}
3323		return 1;
3324	}
3325
3326	/* BMSR_LSTATUS is latched, read it twice:
3327	 * we want the current value.
3328	 */
3329	mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3330	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3331
3332	if (!(mii_status & BMSR_LSTATUS)) {
3333		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3334		newdup = 0;
3335		retval = 0;
3336		goto set_speed;
3337	}
3338
3339	if (np->autoneg == 0) {
3340		if (np->fixed_mode & LPA_100FULL) {
3341			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3342			newdup = 1;
3343		} else if (np->fixed_mode & LPA_100HALF) {
3344			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3345			newdup = 0;
3346		} else if (np->fixed_mode & LPA_10FULL) {
3347			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3348			newdup = 1;
3349		} else {
3350			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3351			newdup = 0;
3352		}
3353		retval = 1;
3354		goto set_speed;
3355	}
3356	/* check auto negotiation is complete */
3357	if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3358		/* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3359		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3360		newdup = 0;
3361		retval = 0;
3362		goto set_speed;
3363	}
3364
3365	adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3366	lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3367
3368	retval = 1;
3369	if (np->gigabit == PHY_GIGABIT) {
3370		control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3371		status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3372
3373		if ((control_1000 & ADVERTISE_1000FULL) &&
3374			(status_1000 & LPA_1000FULL)) {
3375			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3376			newdup = 1;
3377			goto set_speed;
3378		}
3379	}
3380
3381	/* FIXME: handle parallel detection properly */
3382	adv_lpa = lpa & adv;
3383	if (adv_lpa & LPA_100FULL) {
3384		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3385		newdup = 1;
3386	} else if (adv_lpa & LPA_100HALF) {
3387		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3388		newdup = 0;
3389	} else if (adv_lpa & LPA_10FULL) {
3390		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3391		newdup = 1;
3392	} else if (adv_lpa & LPA_10HALF) {
3393		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3394		newdup = 0;
3395	} else {
3396		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3397		newdup = 0;
3398	}
3399
3400set_speed:
3401	if (np->duplex == newdup && np->linkspeed == newls)
3402		return retval;
3403
3404	np->duplex = newdup;
3405	np->linkspeed = newls;
3406
3407	/* The transmitter and receiver must be restarted for safe update */
3408	if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3409		txrxFlags |= NV_RESTART_TX;
3410		nv_stop_tx(dev);
3411	}
3412	if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3413		txrxFlags |= NV_RESTART_RX;
3414		nv_stop_rx(dev);
3415	}
3416
3417	if (np->gigabit == PHY_GIGABIT) {
3418		phyreg = readl(base + NvRegSlotTime);
3419		phyreg &= ~(0x3FF00);
3420		if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3421		    ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3422			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3423		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3424			phyreg |= NVREG_SLOTTIME_1000_FULL;
3425		writel(phyreg, base + NvRegSlotTime);
3426	}
3427
3428	phyreg = readl(base + NvRegPhyInterface);
3429	phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3430	if (np->duplex == 0)
3431		phyreg |= PHY_HALF;
3432	if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3433		phyreg |= PHY_100;
3434	else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3435		phyreg |= PHY_1000;
3436	writel(phyreg, base + NvRegPhyInterface);
3437
3438	phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3439	if (phyreg & PHY_RGMII) {
3440		if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3441			txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3442		} else {
3443			if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3444				if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3445					txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3446				else
3447					txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3448			} else {
3449				txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3450			}
3451		}
3452	} else {
3453		if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3454			txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3455		else
3456			txreg = NVREG_TX_DEFERRAL_DEFAULT;
3457	}
3458	writel(txreg, base + NvRegTxDeferral);
3459
3460	if (np->desc_ver == DESC_VER_1) {
3461		txreg = NVREG_TX_WM_DESC1_DEFAULT;
3462	} else {
3463		if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3464			txreg = NVREG_TX_WM_DESC2_3_1000;
3465		else
3466			txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3467	}
3468	writel(txreg, base + NvRegTxWatermark);
3469
3470	writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3471		base + NvRegMisc1);
3472	pci_push(base);
3473	writel(np->linkspeed, base + NvRegLinkSpeed);
3474	pci_push(base);
3475
3476	pause_flags = 0;
3477	/* setup pause frame */
3478	if (netif_running(dev) && (np->duplex != 0)) {
3479		if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3480			adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3481			lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3482
3483			switch (adv_pause) {
3484			case ADVERTISE_PAUSE_CAP:
3485				if (lpa_pause & LPA_PAUSE_CAP) {
3486					pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3487					if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3488						pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3489				}
3490				break;
3491			case ADVERTISE_PAUSE_ASYM:
3492				if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3493					pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3494				break;
3495			case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3496				if (lpa_pause & LPA_PAUSE_CAP) {
3497					pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3498					if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3499						pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3500				}
3501				if (lpa_pause == LPA_PAUSE_ASYM)
3502					pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3503				break;
3504			}
3505		} else {
3506			pause_flags = np->pause_flags;
3507		}
3508	}
3509	nv_update_pause(dev, pause_flags);
3510
3511	if (txrxFlags & NV_RESTART_TX)
3512		nv_start_tx(dev);
3513	if (txrxFlags & NV_RESTART_RX)
3514		nv_start_rx(dev);
3515
3516	return retval;
3517}
3518
3519static void nv_linkchange(struct net_device *dev)
3520{
3521	if (nv_update_linkspeed(dev)) {
3522		if (!netif_carrier_ok(dev)) {
3523			netif_carrier_on(dev);
3524			netdev_info(dev, "link up\n");
3525			nv_txrx_gate(dev, false);
3526			nv_start_rx(dev);
3527		}
3528	} else {
3529		if (netif_carrier_ok(dev)) {
3530			netif_carrier_off(dev);
3531			netdev_info(dev, "link down\n");
3532			nv_txrx_gate(dev, true);
3533			nv_stop_rx(dev);
3534		}
3535	}
3536}
3537
3538static void nv_link_irq(struct net_device *dev)
3539{
3540	u8 __iomem *base = get_hwbase(dev);
3541	u32 miistat;
3542
3543	miistat = readl(base + NvRegMIIStatus);
3544	writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3545
3546	if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3547		nv_linkchange(dev);
3548}
3549
3550static void nv_msi_workaround(struct fe_priv *np)
3551{
3552
3553	/* Need to toggle the msi irq mask within the ethernet device,
3554	 * otherwise, future interrupts will not be detected.
3555	 */
3556	if (np->msi_flags & NV_MSI_ENABLED) {
3557		u8 __iomem *base = np->base;
3558
3559		writel(0, base + NvRegMSIIrqMask);
3560		writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3561	}
3562}
3563
3564static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3565{
3566	struct fe_priv *np = netdev_priv(dev);
3567
3568	if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3569		if (total_work > NV_DYNAMIC_THRESHOLD) {
3570			/* transition to poll based interrupts */
3571			np->quiet_count = 0;
3572			if (np->irqmask != NVREG_IRQMASK_CPU) {
3573				np->irqmask = NVREG_IRQMASK_CPU;
3574				return 1;
3575			}
3576		} else {
3577			if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3578				np->quiet_count++;
3579			} else {
3580				/* reached a period of low activity, switch
3581				   to per tx/rx packet interrupts */
3582				if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3583					np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3584					return 1;
3585				}
3586			}
3587		}
3588	}
3589	return 0;
3590}
3591
3592static irqreturn_t nv_nic_irq(int foo, void *data)
3593{
3594	struct net_device *dev = (struct net_device *) data;
3595	struct fe_priv *np = netdev_priv(dev);
3596	u8 __iomem *base = get_hwbase(dev);
3597
3598	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3599		np->events = readl(base + NvRegIrqStatus);
3600		writel(np->events, base + NvRegIrqStatus);
3601	} else {
3602		np->events = readl(base + NvRegMSIXIrqStatus);
3603		writel(np->events, base + NvRegMSIXIrqStatus);
3604	}
3605	if (!(np->events & np->irqmask))
3606		return IRQ_NONE;
3607
3608	nv_msi_workaround(np);
3609
3610	if (napi_schedule_prep(&np->napi)) {
3611		/*
3612		 * Disable further irq's (msix not enabled with napi)
3613		 */
3614		writel(0, base + NvRegIrqMask);
3615		__napi_schedule(&np->napi);
3616	}
3617
3618	return IRQ_HANDLED;
3619}
3620
3621/* All _optimized functions are used to help increase performance
3622 * (reduce CPU and increase throughput). They use descripter version 3,
3623 * compiler directives, and reduce memory accesses.
3624 */
3625static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3626{
3627	struct net_device *dev = (struct net_device *) data;
3628	struct fe_priv *np = netdev_priv(dev);
3629	u8 __iomem *base = get_hwbase(dev);
3630
3631	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3632		np->events = readl(base + NvRegIrqStatus);
3633		writel(np->events, base + NvRegIrqStatus);
3634	} else {
3635		np->events = readl(base + NvRegMSIXIrqStatus);
3636		writel(np->events, base + NvRegMSIXIrqStatus);
3637	}
3638	if (!(np->events & np->irqmask))
3639		return IRQ_NONE;
3640
3641	nv_msi_workaround(np);
3642
3643	if (napi_schedule_prep(&np->napi)) {
3644		/*
3645		 * Disable further irq's (msix not enabled with napi)
3646		 */
3647		writel(0, base + NvRegIrqMask);
3648		__napi_schedule(&np->napi);
3649	}
3650
3651	return IRQ_HANDLED;
3652}
3653
3654static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3655{
3656	struct net_device *dev = (struct net_device *) data;
3657	struct fe_priv *np = netdev_priv(dev);
3658	u8 __iomem *base = get_hwbase(dev);
3659	u32 events;
3660	int i;
3661	unsigned long flags;
3662
3663	for (i = 0;; i++) {
3664		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3665		writel(events, base + NvRegMSIXIrqStatus);
3666		netdev_dbg(dev, "tx irq events: %08x\n", events);
3667		if (!(events & np->irqmask))
3668			break;
3669
3670		spin_lock_irqsave(&np->lock, flags);
3671		nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3672		spin_unlock_irqrestore(&np->lock, flags);
3673
3674		if (unlikely(i > max_interrupt_work)) {
3675			spin_lock_irqsave(&np->lock, flags);
3676			/* disable interrupts on the nic */
3677			writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3678			pci_push(base);
3679
3680			if (!np->in_shutdown) {
3681				np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3682				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3683			}
3684			spin_unlock_irqrestore(&np->lock, flags);
3685			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3686				   __func__, i);
3687			break;
3688		}
3689
3690	}
3691
3692	return IRQ_RETVAL(i);
3693}
3694
3695static int nv_napi_poll(struct napi_struct *napi, int budget)
3696{
3697	struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3698	struct net_device *dev = np->dev;
3699	u8 __iomem *base = get_hwbase(dev);
3700	unsigned long flags;
3701	int retcode;
3702	int rx_count, tx_work = 0, rx_work = 0;
3703
3704	do {
3705		if (!nv_optimized(np)) {
3706			spin_lock_irqsave(&np->lock, flags);
3707			tx_work += nv_tx_done(dev, np->tx_ring_size);
3708			spin_unlock_irqrestore(&np->lock, flags);
3709
3710			rx_count = nv_rx_process(dev, budget - rx_work);
3711			retcode = nv_alloc_rx(dev);
3712		} else {
3713			spin_lock_irqsave(&np->lock, flags);
3714			tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3715			spin_unlock_irqrestore(&np->lock, flags);
3716
3717			rx_count = nv_rx_process_optimized(dev,
3718			    budget - rx_work);
3719			retcode = nv_alloc_rx_optimized(dev);
3720		}
3721	} while (retcode == 0 &&
3722		 rx_count > 0 && (rx_work += rx_count) < budget);
3723
3724	if (retcode) {
3725		spin_lock_irqsave(&np->lock, flags);
3726		if (!np->in_shutdown)
3727			mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3728		spin_unlock_irqrestore(&np->lock, flags);
3729	}
3730
3731	nv_change_interrupt_mode(dev, tx_work + rx_work);
3732
3733	if (unlikely(np->events & NVREG_IRQ_LINK)) {
3734		spin_lock_irqsave(&np->lock, flags);
3735		nv_link_irq(dev);
3736		spin_unlock_irqrestore(&np->lock, flags);
3737	}
3738	if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3739		spin_lock_irqsave(&np->lock, flags);
3740		nv_linkchange(dev);
3741		spin_unlock_irqrestore(&np->lock, flags);
3742		np->link_timeout = jiffies + LINK_TIMEOUT;
3743	}
3744	if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3745		spin_lock_irqsave(&np->lock, flags);
3746		if (!np->in_shutdown) {
3747			np->nic_poll_irq = np->irqmask;
3748			np->recover_error = 1;
3749			mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3750		}
3751		spin_unlock_irqrestore(&np->lock, flags);
3752		napi_complete(napi);
3753		return rx_work;
3754	}
3755
3756	if (rx_work < budget) {
3757		/* re-enable interrupts
3758		   (msix not enabled in napi) */
3759		napi_complete(napi);
3760
3761		writel(np->irqmask, base + NvRegIrqMask);
3762	}
3763	return rx_work;
3764}
3765
3766static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3767{
3768	struct net_device *dev = (struct net_device *) data;
3769	struct fe_priv *np = netdev_priv(dev);
3770	u8 __iomem *base = get_hwbase(dev);
3771	u32 events;
3772	int i;
3773	unsigned long flags;
3774
3775	for (i = 0;; i++) {
3776		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3777		writel(events, base + NvRegMSIXIrqStatus);
3778		netdev_dbg(dev, "rx irq events: %08x\n", events);
3779		if (!(events & np->irqmask))
3780			break;
3781
3782		if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3783			if (unlikely(nv_alloc_rx_optimized(dev))) {
3784				spin_lock_irqsave(&np->lock, flags);
3785				if (!np->in_shutdown)
3786					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3787				spin_unlock_irqrestore(&np->lock, flags);
3788			}
3789		}
3790
3791		if (unlikely(i > max_interrupt_work)) {
3792			spin_lock_irqsave(&np->lock, flags);
3793			/* disable interrupts on the nic */
3794			writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3795			pci_push(base);
3796
3797			if (!np->in_shutdown) {
3798				np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3799				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3800			}
3801			spin_unlock_irqrestore(&np->lock, flags);
3802			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3803				   __func__, i);
3804			break;
3805		}
3806	}
3807
3808	return IRQ_RETVAL(i);
3809}
3810
3811static irqreturn_t nv_nic_irq_other(int foo, void *data)
3812{
3813	struct net_device *dev = (struct net_device *) data;
3814	struct fe_priv *np = netdev_priv(dev);
3815	u8 __iomem *base = get_hwbase(dev);
3816	u32 events;
3817	int i;
3818	unsigned long flags;
3819
3820	for (i = 0;; i++) {
3821		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3822		writel(events, base + NvRegMSIXIrqStatus);
3823		netdev_dbg(dev, "irq events: %08x\n", events);
3824		if (!(events & np->irqmask))
3825			break;
3826
3827		/* check tx in case we reached max loop limit in tx isr */
3828		spin_lock_irqsave(&np->lock, flags);
3829		nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3830		spin_unlock_irqrestore(&np->lock, flags);
3831
3832		if (events & NVREG_IRQ_LINK) {
3833			spin_lock_irqsave(&np->lock, flags);
3834			nv_link_irq(dev);
3835			spin_unlock_irqrestore(&np->lock, flags);
3836		}
3837		if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3838			spin_lock_irqsave(&np->lock, flags);
3839			nv_linkchange(dev);
3840			spin_unlock_irqrestore(&np->lock, flags);
3841			np->link_timeout = jiffies + LINK_TIMEOUT;
3842		}
3843		if (events & NVREG_IRQ_RECOVER_ERROR) {
3844			spin_lock_irqsave(&np->lock, flags);
3845			/* disable interrupts on the nic */
3846			writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3847			pci_push(base);
3848
3849			if (!np->in_shutdown) {
3850				np->nic_poll_irq |= NVREG_IRQ_OTHER;
3851				np->recover_error = 1;
3852				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3853			}
3854			spin_unlock_irqrestore(&np->lock, flags);
3855			break;
3856		}
3857		if (unlikely(i > max_interrupt_work)) {
3858			spin_lock_irqsave(&np->lock, flags);
3859			/* disable interrupts on the nic */
3860			writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3861			pci_push(base);
3862
3863			if (!np->in_shutdown) {
3864				np->nic_poll_irq |= NVREG_IRQ_OTHER;
3865				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3866			}
3867			spin_unlock_irqrestore(&np->lock, flags);
3868			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3869				   __func__, i);
3870			break;
3871		}
3872
3873	}
3874
3875	return IRQ_RETVAL(i);
3876}
3877
3878static irqreturn_t nv_nic_irq_test(int foo, void *data)
3879{
3880	struct net_device *dev = (struct net_device *) data;
3881	struct fe_priv *np = netdev_priv(dev);
3882	u8 __iomem *base = get_hwbase(dev);
3883	u32 events;
3884
3885	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3886		events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3887		writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3888	} else {
3889		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3890		writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3891	}
3892	pci_push(base);
3893	if (!(events & NVREG_IRQ_TIMER))
3894		return IRQ_RETVAL(0);
3895
3896	nv_msi_workaround(np);
3897
3898	spin_lock(&np->lock);
3899	np->intr_test = 1;
3900	spin_unlock(&np->lock);
3901
3902	return IRQ_RETVAL(1);
3903}
3904
3905static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3906{
3907	u8 __iomem *base = get_hwbase(dev);
3908	int i;
3909	u32 msixmap = 0;
3910
3911	/* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3912	 * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3913	 * the remaining 8 interrupts.
3914	 */
3915	for (i = 0; i < 8; i++) {
3916		if ((irqmask >> i) & 0x1)
3917			msixmap |= vector << (i << 2);
3918	}
3919	writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3920
3921	msixmap = 0;
3922	for (i = 0; i < 8; i++) {
3923		if ((irqmask >> (i + 8)) & 0x1)
3924			msixmap |= vector << (i << 2);
3925	}
3926	writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3927}
3928
3929static int nv_request_irq(struct net_device *dev, int intr_test)
3930{
3931	struct fe_priv *np = get_nvpriv(dev);
3932	u8 __iomem *base = get_hwbase(dev);
3933	int ret;
3934	int i;
3935	irqreturn_t (*handler)(int foo, void *data);
3936
3937	if (intr_test) {
3938		handler = nv_nic_irq_test;
3939	} else {
3940		if (nv_optimized(np))
3941			handler = nv_nic_irq_optimized;
3942		else
3943			handler = nv_nic_irq;
3944	}
3945
3946	if (np->msi_flags & NV_MSI_X_CAPABLE) {
3947		for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3948			np->msi_x_entry[i].entry = i;
3949		ret = pci_enable_msix_range(np->pci_dev,
3950					    np->msi_x_entry,
3951					    np->msi_flags & NV_MSI_X_VECTORS_MASK,
3952					    np->msi_flags & NV_MSI_X_VECTORS_MASK);
3953		if (ret > 0) {
3954			np->msi_flags |= NV_MSI_X_ENABLED;
3955			if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3956				/* Request irq for rx handling */
3957				sprintf(np->name_rx, "%s-rx", dev->name);
3958				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3959						  nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev);
3960				if (ret) {
3961					netdev_info(dev,
3962						    "request_irq failed for rx %d\n",
3963						    ret);
3964					pci_disable_msix(np->pci_dev);
3965					np->msi_flags &= ~NV_MSI_X_ENABLED;
3966					goto out_err;
3967				}
3968				/* Request irq for tx handling */
3969				sprintf(np->name_tx, "%s-tx", dev->name);
3970				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3971						  nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev);
3972				if (ret) {
3973					netdev_info(dev,
3974						    "request_irq failed for tx %d\n",
3975						    ret);
3976					pci_disable_msix(np->pci_dev);
3977					np->msi_flags &= ~NV_MSI_X_ENABLED;
3978					goto out_free_rx;
3979				}
3980				/* Request irq for link and timer handling */
3981				sprintf(np->name_other, "%s-other", dev->name);
3982				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3983						  nv_nic_irq_other, IRQF_SHARED, np->name_other, dev);
3984				if (ret) {
3985					netdev_info(dev,
3986						    "request_irq failed for link %d\n",
3987						    ret);
3988					pci_disable_msix(np->pci_dev);
3989					np->msi_flags &= ~NV_MSI_X_ENABLED;
3990					goto out_free_tx;
3991				}
3992				/* map interrupts to their respective vector */
3993				writel(0, base + NvRegMSIXMap0);
3994				writel(0, base + NvRegMSIXMap1);
3995				set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3996				set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3997				set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3998			} else {
3999				/* Request irq for all interrupts */
4000				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector,
4001						  handler, IRQF_SHARED, dev->name, dev);
4002				if (ret) {
4003					netdev_info(dev,
4004						    "request_irq failed %d\n",
4005						    ret);
4006					pci_disable_msix(np->pci_dev);
4007					np->msi_flags &= ~NV_MSI_X_ENABLED;
4008					goto out_err;
4009				}
4010
4011				/* map interrupts to vector 0 */
4012				writel(0, base + NvRegMSIXMap0);
4013				writel(0, base + NvRegMSIXMap1);
4014			}
4015			netdev_info(dev, "MSI-X enabled\n");
4016			return 0;
4017		}
4018	}
4019	if (np->msi_flags & NV_MSI_CAPABLE) {
4020		ret = pci_enable_msi(np->pci_dev);
4021		if (ret == 0) {
4022			np->msi_flags |= NV_MSI_ENABLED;
4023			ret = request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev);
4024			if (ret) {
4025				netdev_info(dev, "request_irq failed %d\n",
4026					    ret);
4027				pci_disable_msi(np->pci_dev);
4028				np->msi_flags &= ~NV_MSI_ENABLED;
4029				goto out_err;
4030			}
4031
4032			/* map interrupts to vector 0 */
4033			writel(0, base + NvRegMSIMap0);
4034			writel(0, base + NvRegMSIMap1);
4035			/* enable msi vector 0 */
4036			writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
4037			netdev_info(dev, "MSI enabled\n");
4038			return 0;
4039		}
4040	}
4041
4042	if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
4043		goto out_err;
4044
4045	return 0;
4046out_free_tx:
4047	free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4048out_free_rx:
4049	free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4050out_err:
4051	return 1;
4052}
4053
4054static void nv_free_irq(struct net_device *dev)
4055{
4056	struct fe_priv *np = get_nvpriv(dev);
4057	int i;
4058
4059	if (np->msi_flags & NV_MSI_X_ENABLED) {
4060		for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4061			free_irq(np->msi_x_entry[i].vector, dev);
4062		pci_disable_msix(np->pci_dev);
4063		np->msi_flags &= ~NV_MSI_X_ENABLED;
4064	} else {
4065		free_irq(np->pci_dev->irq, dev);
4066		if (np->msi_flags & NV_MSI_ENABLED) {
4067			pci_disable_msi(np->pci_dev);
4068			np->msi_flags &= ~NV_MSI_ENABLED;
4069		}
4070	}
4071}
4072
4073static void nv_do_nic_poll(unsigned long data)
4074{
4075	struct net_device *dev = (struct net_device *) data;
4076	struct fe_priv *np = netdev_priv(dev);
4077	u8 __iomem *base = get_hwbase(dev);
4078	u32 mask = 0;
4079	unsigned long flags;
4080	unsigned int irq = 0;
4081
4082	/*
4083	 * First disable irq(s) and then
4084	 * reenable interrupts on the nic, we have to do this before calling
4085	 * nv_nic_irq because that may decide to do otherwise
4086	 */
4087
4088	if (!using_multi_irqs(dev)) {
4089		if (np->msi_flags & NV_MSI_X_ENABLED)
4090			irq = np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector;
4091		else
4092			irq = np->pci_dev->irq;
4093		mask = np->irqmask;
4094	} else {
4095		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4096			irq = np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector;
4097			mask |= NVREG_IRQ_RX_ALL;
4098		}
4099		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4100			irq = np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector;
4101			mask |= NVREG_IRQ_TX_ALL;
4102		}
4103		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4104			irq = np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector;
4105			mask |= NVREG_IRQ_OTHER;
4106		}
4107	}
4108
4109	disable_irq_nosync_lockdep_irqsave(irq, &flags);
4110	synchronize_irq(irq);
4111
4112	if (np->recover_error) {
4113		np->recover_error = 0;
4114		netdev_info(dev, "MAC in recoverable error state\n");
4115		if (netif_running(dev)) {
4116			netif_tx_lock_bh(dev);
4117			netif_addr_lock(dev);
4118			spin_lock(&np->lock);
4119			/* stop engines */
4120			nv_stop_rxtx(dev);
4121			if (np->driver_data & DEV_HAS_POWER_CNTRL)
4122				nv_mac_reset(dev);
4123			nv_txrx_reset(dev);
4124			/* drain rx queue */
4125			nv_drain_rxtx(dev);
4126			/* reinit driver view of the rx queue */
4127			set_bufsize(dev);
4128			if (nv_init_ring(dev)) {
4129				if (!np->in_shutdown)
4130					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4131			}
4132			/* reinit nic view of the rx queue */
4133			writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4134			setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4135			writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4136				base + NvRegRingSizes);
4137			pci_push(base);
4138			writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4139			pci_push(base);
4140			/* clear interrupts */
4141			if (!(np->msi_flags & NV_MSI_X_ENABLED))
4142				writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4143			else
4144				writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4145
4146			/* restart rx engine */
4147			nv_start_rxtx(dev);
4148			spin_unlock(&np->lock);
4149			netif_addr_unlock(dev);
4150			netif_tx_unlock_bh(dev);
4151		}
4152	}
4153
4154	writel(mask, base + NvRegIrqMask);
4155	pci_push(base);
4156
4157	if (!using_multi_irqs(dev)) {
4158		np->nic_poll_irq = 0;
4159		if (nv_optimized(np))
4160			nv_nic_irq_optimized(0, dev);
4161		else
4162			nv_nic_irq(0, dev);
4163	} else {
4164		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4165			np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4166			nv_nic_irq_rx(0, dev);
4167		}
4168		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4169			np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4170			nv_nic_irq_tx(0, dev);
4171		}
4172		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4173			np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4174			nv_nic_irq_other(0, dev);
4175		}
4176	}
4177
4178	enable_irq_lockdep_irqrestore(irq, &flags);
4179}
4180
4181#ifdef CONFIG_NET_POLL_CONTROLLER
4182static void nv_poll_controller(struct net_device *dev)
4183{
4184	nv_do_nic_poll((unsigned long) dev);
4185}
4186#endif
4187
4188static void nv_do_stats_poll(unsigned long data)
4189	__acquires(&netdev_priv(dev)->hwstats_lock)
4190	__releases(&netdev_priv(dev)->hwstats_lock)
4191{
4192	struct net_device *dev = (struct net_device *) data;
4193	struct fe_priv *np = netdev_priv(dev);
4194
4195	/* If lock is currently taken, the stats are being refreshed
4196	 * and hence fresh enough */
4197	if (spin_trylock(&np->hwstats_lock)) {
4198		nv_update_stats(dev);
4199		spin_unlock(&np->hwstats_lock);
4200	}
4201
4202	if (!np->in_shutdown)
4203		mod_timer(&np->stats_poll,
4204			round_jiffies(jiffies + STATS_INTERVAL));
4205}
4206
4207static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4208{
4209	struct fe_priv *np = netdev_priv(dev);
4210	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4211	strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4212	strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4213}
4214
4215static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4216{
4217	struct fe_priv *np = netdev_priv(dev);
4218	wolinfo->supported = WAKE_MAGIC;
4219
4220	spin_lock_irq(&np->lock);
4221	if (np->wolenabled)
4222		wolinfo->wolopts = WAKE_MAGIC;
4223	spin_unlock_irq(&np->lock);
4224}
4225
4226static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4227{
4228	struct fe_priv *np = netdev_priv(dev);
4229	u8 __iomem *base = get_hwbase(dev);
4230	u32 flags = 0;
4231
4232	if (wolinfo->wolopts == 0) {
4233		np->wolenabled = 0;
4234	} else if (wolinfo->wolopts & WAKE_MAGIC) {
4235		np->wolenabled = 1;
4236		flags = NVREG_WAKEUPFLAGS_ENABLE;
4237	}
4238	if (netif_running(dev)) {
4239		spin_lock_irq(&np->lock);
4240		writel(flags, base + NvRegWakeUpFlags);
4241		spin_unlock_irq(&np->lock);
4242	}
4243	device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4244	return 0;
4245}
4246
4247static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4248{
4249	struct fe_priv *np = netdev_priv(dev);
4250	u32 speed;
4251	int adv;
4252
4253	spin_lock_irq(&np->lock);
4254	ecmd->port = PORT_MII;
4255	if (!netif_running(dev)) {
4256		/* We do not track link speed / duplex setting if the
4257		 * interface is disabled. Force a link check */
4258		if (nv_update_linkspeed(dev)) {
4259			if (!netif_carrier_ok(dev))
4260				netif_carrier_on(dev);
4261		} else {
4262			if (netif_carrier_ok(dev))
4263				netif_carrier_off(dev);
4264		}
4265	}
4266
4267	if (netif_carrier_ok(dev)) {
4268		switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4269		case NVREG_LINKSPEED_10:
4270			speed = SPEED_10;
4271			break;
4272		case NVREG_LINKSPEED_100:
4273			speed = SPEED_100;
4274			break;
4275		case NVREG_LINKSPEED_1000:
4276			speed = SPEED_1000;
4277			break;
4278		default:
4279			speed = -1;
4280			break;
4281		}
4282		ecmd->duplex = DUPLEX_HALF;
4283		if (np->duplex)
4284			ecmd->duplex = DUPLEX_FULL;
4285	} else {
4286		speed = SPEED_UNKNOWN;
4287		ecmd->duplex = DUPLEX_UNKNOWN;
4288	}
4289	ethtool_cmd_speed_set(ecmd, speed);
4290	ecmd->autoneg = np->autoneg;
4291
4292	ecmd->advertising = ADVERTISED_MII;
4293	if (np->autoneg) {
4294		ecmd->advertising |= ADVERTISED_Autoneg;
4295		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4296		if (adv & ADVERTISE_10HALF)
4297			ecmd->advertising |= ADVERTISED_10baseT_Half;
4298		if (adv & ADVERTISE_10FULL)
4299			ecmd->advertising |= ADVERTISED_10baseT_Full;
4300		if (adv & ADVERTISE_100HALF)
4301			ecmd->advertising |= ADVERTISED_100baseT_Half;
4302		if (adv & ADVERTISE_100FULL)
4303			ecmd->advertising |= ADVERTISED_100baseT_Full;
4304		if (np->gigabit == PHY_GIGABIT) {
4305			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4306			if (adv & ADVERTISE_1000FULL)
4307				ecmd->advertising |= ADVERTISED_1000baseT_Full;
4308		}
4309	}
4310	ecmd->supported = (SUPPORTED_Autoneg |
4311		SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4312		SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4313		SUPPORTED_MII);
4314	if (np->gigabit == PHY_GIGABIT)
4315		ecmd->supported |= SUPPORTED_1000baseT_Full;
4316
4317	ecmd->phy_address = np->phyaddr;
4318	ecmd->transceiver = XCVR_EXTERNAL;
4319
4320	/* ignore maxtxpkt, maxrxpkt for now */
4321	spin_unlock_irq(&np->lock);
4322	return 0;
4323}
4324
4325static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4326{
4327	struct fe_priv *np = netdev_priv(dev);
4328	u32 speed = ethtool_cmd_speed(ecmd);
4329
4330	if (ecmd->port != PORT_MII)
4331		return -EINVAL;
4332	if (ecmd->transceiver != XCVR_EXTERNAL)
4333		return -EINVAL;
4334	if (ecmd->phy_address != np->phyaddr) {
4335		/* TODO: support switching between multiple phys. Should be
4336		 * trivial, but not enabled due to lack of test hardware. */
4337		return -EINVAL;
4338	}
4339	if (ecmd->autoneg == AUTONEG_ENABLE) {
4340		u32 mask;
4341
4342		mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4343			  ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4344		if (np->gigabit == PHY_GIGABIT)
4345			mask |= ADVERTISED_1000baseT_Full;
4346
4347		if ((ecmd->advertising & mask) == 0)
4348			return -EINVAL;
4349
4350	} else if (ecmd->autoneg == AUTONEG_DISABLE) {
4351		/* Note: autonegotiation disable, speed 1000 intentionally
4352		 * forbidden - no one should need that. */
4353
4354		if (speed != SPEED_10 && speed != SPEED_100)
4355			return -EINVAL;
4356		if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4357			return -EINVAL;
4358	} else {
4359		return -EINVAL;
4360	}
4361
4362	netif_carrier_off(dev);
4363	if (netif_running(dev)) {
4364		unsigned long flags;
4365
4366		nv_disable_irq(dev);
4367		netif_tx_lock_bh(dev);
4368		netif_addr_lock(dev);
4369		/* with plain spinlock lockdep complains */
4370		spin_lock_irqsave(&np->lock, flags);
4371		/* stop engines */
4372		/* FIXME:
4373		 * this can take some time, and interrupts are disabled
4374		 * due to spin_lock_irqsave, but let's hope no daemon
4375		 * is going to change the settings very often...
4376		 * Worst case:
4377		 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4378		 * + some minor delays, which is up to a second approximately
4379		 */
4380		nv_stop_rxtx(dev);
4381		spin_unlock_irqrestore(&np->lock, flags);
4382		netif_addr_unlock(dev);
4383		netif_tx_unlock_bh(dev);
4384	}
4385
4386	if (ecmd->autoneg == AUTONEG_ENABLE) {
4387		int adv, bmcr;
4388
4389		np->autoneg = 1;
4390
4391		/* advertise only what has been requested */
4392		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4393		adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4394		if (ecmd->advertising & ADVERTISED_10baseT_Half)
4395			adv |= ADVERTISE_10HALF;
4396		if (ecmd->advertising & ADVERTISED_10baseT_Full)
4397			adv |= ADVERTISE_10FULL;
4398		if (ecmd->advertising & ADVERTISED_100baseT_Half)
4399			adv |= ADVERTISE_100HALF;
4400		if (ecmd->advertising & ADVERTISED_100baseT_Full)
4401			adv |= ADVERTISE_100FULL;
4402		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisements but disable tx pause */
4403			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4404		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4405			adv |=  ADVERTISE_PAUSE_ASYM;
4406		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4407
4408		if (np->gigabit == PHY_GIGABIT) {
4409			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4410			adv &= ~ADVERTISE_1000FULL;
4411			if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4412				adv |= ADVERTISE_1000FULL;
4413			mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4414		}
4415
4416		if (netif_running(dev))
4417			netdev_info(dev, "link down\n");
4418		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4419		if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4420			bmcr |= BMCR_ANENABLE;
4421			/* reset the phy in order for settings to stick,
4422			 * and cause autoneg to start */
4423			if (phy_reset(dev, bmcr)) {
4424				netdev_info(dev, "phy reset failed\n");
4425				return -EINVAL;
4426			}
4427		} else {
4428			bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4429			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4430		}
4431	} else {
4432		int adv, bmcr;
4433
4434		np->autoneg = 0;
4435
4436		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4437		adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4438		if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4439			adv |= ADVERTISE_10HALF;
4440		if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4441			adv |= ADVERTISE_10FULL;
4442		if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4443			adv |= ADVERTISE_100HALF;
4444		if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4445			adv |= ADVERTISE_100FULL;
4446		np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4447		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4448			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4449			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4450		}
4451		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4452			adv |=  ADVERTISE_PAUSE_ASYM;
4453			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4454		}
4455		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4456		np->fixed_mode = adv;
4457
4458		if (np->gigabit == PHY_GIGABIT) {
4459			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4460			adv &= ~ADVERTISE_1000FULL;
4461			mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4462		}
4463
4464		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4465		bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4466		if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4467			bmcr |= BMCR_FULLDPLX;
4468		if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4469			bmcr |= BMCR_SPEED100;
4470		if (np->phy_oui == PHY_OUI_MARVELL) {
4471			/* reset the phy in order for forced mode settings to stick */
4472			if (phy_reset(dev, bmcr)) {
4473				netdev_info(dev, "phy reset failed\n");
4474				return -EINVAL;
4475			}
4476		} else {
4477			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4478			if (netif_running(dev)) {
4479				/* Wait a bit and then reconfigure the nic. */
4480				udelay(10);
4481				nv_linkchange(dev);
4482			}
4483		}
4484	}
4485
4486	if (netif_running(dev)) {
4487		nv_start_rxtx(dev);
4488		nv_enable_irq(dev);
4489	}
4490
4491	return 0;
4492}
4493
4494#define FORCEDETH_REGS_VER	1
4495
4496static int nv_get_regs_len(struct net_device *dev)
4497{
4498	struct fe_priv *np = netdev_priv(dev);
4499	return np->register_size;
4500}
4501
4502static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4503{
4504	struct fe_priv *np = netdev_priv(dev);
4505	u8 __iomem *base = get_hwbase(dev);
4506	u32 *rbuf = buf;
4507	int i;
4508
4509	regs->version = FORCEDETH_REGS_VER;
4510	spin_lock_irq(&np->lock);
4511	for (i = 0; i < np->register_size/sizeof(u32); i++)
4512		rbuf[i] = readl(base + i*sizeof(u32));
4513	spin_unlock_irq(&np->lock);
4514}
4515
4516static int nv_nway_reset(struct net_device *dev)
4517{
4518	struct fe_priv *np = netdev_priv(dev);
4519	int ret;
4520
4521	if (np->autoneg) {
4522		int bmcr;
4523
4524		netif_carrier_off(dev);
4525		if (netif_running(dev)) {
4526			nv_disable_irq(dev);
4527			netif_tx_lock_bh(dev);
4528			netif_addr_lock(dev);
4529			spin_lock(&np->lock);
4530			/* stop engines */
4531			nv_stop_rxtx(dev);
4532			spin_unlock(&np->lock);
4533			netif_addr_unlock(dev);
4534			netif_tx_unlock_bh(dev);
4535			netdev_info(dev, "link down\n");
4536		}
4537
4538		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4539		if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4540			bmcr |= BMCR_ANENABLE;
4541			/* reset the phy in order for settings to stick*/
4542			if (phy_reset(dev, bmcr)) {
4543				netdev_info(dev, "phy reset failed\n");
4544				return -EINVAL;
4545			}
4546		} else {
4547			bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4548			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4549		}
4550
4551		if (netif_running(dev)) {
4552			nv_start_rxtx(dev);
4553			nv_enable_irq(dev);
4554		}
4555		ret = 0;
4556	} else {
4557		ret = -EINVAL;
4558	}
4559
4560	return ret;
4561}
4562
4563static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4564{
4565	struct fe_priv *np = netdev_priv(dev);
4566
4567	ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4568	ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4569
4570	ring->rx_pending = np->rx_ring_size;
4571	ring->tx_pending = np->tx_ring_size;
4572}
4573
4574static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4575{
4576	struct fe_priv *np = netdev_priv(dev);
4577	u8 __iomem *base = get_hwbase(dev);
4578	u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4579	dma_addr_t ring_addr;
4580
4581	if (ring->rx_pending < RX_RING_MIN ||
4582	    ring->tx_pending < TX_RING_MIN ||
4583	    ring->rx_mini_pending != 0 ||
4584	    ring->rx_jumbo_pending != 0 ||
4585	    (np->desc_ver == DESC_VER_1 &&
4586	     (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4587	      ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4588	    (np->desc_ver != DESC_VER_1 &&
4589	     (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4590	      ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4591		return -EINVAL;
4592	}
4593
4594	/* allocate new rings */
4595	if (!nv_optimized(np)) {
4596		rxtx_ring = pci_alloc_consistent(np->pci_dev,
4597					    sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4598					    &ring_addr);
4599	} else {
4600		rxtx_ring = pci_alloc_consistent(np->pci_dev,
4601					    sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4602					    &ring_addr);
4603	}
4604	rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4605	tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4606	if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4607		/* fall back to old rings */
4608		if (!nv_optimized(np)) {
4609			if (rxtx_ring)
4610				pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4611						    rxtx_ring, ring_addr);
4612		} else {
4613			if (rxtx_ring)
4614				pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4615						    rxtx_ring, ring_addr);
4616		}
4617
4618		kfree(rx_skbuff);
4619		kfree(tx_skbuff);
4620		goto exit;
4621	}
4622
4623	if (netif_running(dev)) {
4624		nv_disable_irq(dev);
4625		nv_napi_disable(dev);
4626		netif_tx_lock_bh(dev);
4627		netif_addr_lock(dev);
4628		spin_lock(&np->lock);
4629		/* stop engines */
4630		nv_stop_rxtx(dev);
4631		nv_txrx_reset(dev);
4632		/* drain queues */
4633		nv_drain_rxtx(dev);
4634		/* delete queues */
4635		free_rings(dev);
4636	}
4637
4638	/* set new values */
4639	np->rx_ring_size = ring->rx_pending;
4640	np->tx_ring_size = ring->tx_pending;
4641
4642	if (!nv_optimized(np)) {
4643		np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4644		np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4645	} else {
4646		np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4647		np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4648	}
4649	np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4650	np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4651	np->ring_addr = ring_addr;
4652
4653	memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4654	memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4655
4656	if (netif_running(dev)) {
4657		/* reinit driver view of the queues */
4658		set_bufsize(dev);
4659		if (nv_init_ring(dev)) {
4660			if (!np->in_shutdown)
4661				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4662		}
4663
4664		/* reinit nic view of the queues */
4665		writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4666		setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4667		writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4668			base + NvRegRingSizes);
4669		pci_push(base);
4670		writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4671		pci_push(base);
4672
4673		/* restart engines */
4674		nv_start_rxtx(dev);
4675		spin_unlock(&np->lock);
4676		netif_addr_unlock(dev);
4677		netif_tx_unlock_bh(dev);
4678		nv_napi_enable(dev);
4679		nv_enable_irq(dev);
4680	}
4681	return 0;
4682exit:
4683	return -ENOMEM;
4684}
4685
4686static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4687{
4688	struct fe_priv *np = netdev_priv(dev);
4689
4690	pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4691	pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4692	pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4693}
4694
4695static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4696{
4697	struct fe_priv *np = netdev_priv(dev);
4698	int adv, bmcr;
4699
4700	if ((!np->autoneg && np->duplex == 0) ||
4701	    (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4702		netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4703		return -EINVAL;
4704	}
4705	if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4706		netdev_info(dev, "hardware does not support tx pause frames\n");
4707		return -EINVAL;
4708	}
4709
4710	netif_carrier_off(dev);
4711	if (netif_running(dev)) {
4712		nv_disable_irq(dev);
4713		netif_tx_lock_bh(dev);
4714		netif_addr_lock(dev);
4715		spin_lock(&np->lock);
4716		/* stop engines */
4717		nv_stop_rxtx(dev);
4718		spin_unlock(&np->lock);
4719		netif_addr_unlock(dev);
4720		netif_tx_unlock_bh(dev);
4721	}
4722
4723	np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4724	if (pause->rx_pause)
4725		np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4726	if (pause->tx_pause)
4727		np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4728
4729	if (np->autoneg && pause->autoneg) {
4730		np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4731
4732		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4733		adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4734		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4735			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4736		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4737			adv |=  ADVERTISE_PAUSE_ASYM;
4738		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4739
4740		if (netif_running(dev))
4741			netdev_info(dev, "link down\n");
4742		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4743		bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4744		mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4745	} else {
4746		np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4747		if (pause->rx_pause)
4748			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4749		if (pause->tx_pause)
4750			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4751
4752		if (!netif_running(dev))
4753			nv_update_linkspeed(dev);
4754		else
4755			nv_update_pause(dev, np->pause_flags);
4756	}
4757
4758	if (netif_running(dev)) {
4759		nv_start_rxtx(dev);
4760		nv_enable_irq(dev);
4761	}
4762	return 0;
4763}
4764
4765static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4766{
4767	struct fe_priv *np = netdev_priv(dev);
4768	unsigned long flags;
4769	u32 miicontrol;
4770	int err, retval = 0;
4771
4772	spin_lock_irqsave(&np->lock, flags);
4773	miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4774	if (features & NETIF_F_LOOPBACK) {
4775		if (miicontrol & BMCR_LOOPBACK) {
4776			spin_unlock_irqrestore(&np->lock, flags);
4777			netdev_info(dev, "Loopback already enabled\n");
4778			return 0;
4779		}
4780		nv_disable_irq(dev);
4781		/* Turn on loopback mode */
4782		miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4783		err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4784		if (err) {
4785			retval = PHY_ERROR;
4786			spin_unlock_irqrestore(&np->lock, flags);
4787			phy_init(dev);
4788		} else {
4789			if (netif_running(dev)) {
4790				/* Force 1000 Mbps full-duplex */
4791				nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4792									 1);
4793				/* Force link up */
4794				netif_carrier_on(dev);
4795			}
4796			spin_unlock_irqrestore(&np->lock, flags);
4797			netdev_info(dev,
4798				"Internal PHY loopback mode enabled.\n");
4799		}
4800	} else {
4801		if (!(miicontrol & BMCR_LOOPBACK)) {
4802			spin_unlock_irqrestore(&np->lock, flags);
4803			netdev_info(dev, "Loopback already disabled\n");
4804			return 0;
4805		}
4806		nv_disable_irq(dev);
4807		/* Turn off loopback */
4808		spin_unlock_irqrestore(&np->lock, flags);
4809		netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4810		phy_init(dev);
4811	}
4812	msleep(500);
4813	spin_lock_irqsave(&np->lock, flags);
4814	nv_enable_irq(dev);
4815	spin_unlock_irqrestore(&np->lock, flags);
4816
4817	return retval;
4818}
4819
4820static netdev_features_t nv_fix_features(struct net_device *dev,
4821	netdev_features_t features)
4822{
4823	/* vlan is dependent on rx checksum offload */
4824	if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4825		features |= NETIF_F_RXCSUM;
4826
4827	return features;
4828}
4829
4830static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4831{
4832	struct fe_priv *np = get_nvpriv(dev);
4833
4834	spin_lock_irq(&np->lock);
4835
4836	if (features & NETIF_F_HW_VLAN_CTAG_RX)
4837		np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4838	else
4839		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4840
4841	if (features & NETIF_F_HW_VLAN_CTAG_TX)
4842		np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4843	else
4844		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4845
4846	writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4847
4848	spin_unlock_irq(&np->lock);
4849}
4850
4851static int nv_set_features(struct net_device *dev, netdev_features_t features)
4852{
4853	struct fe_priv *np = netdev_priv(dev);
4854	u8 __iomem *base = get_hwbase(dev);
4855	netdev_features_t changed = dev->features ^ features;
4856	int retval;
4857
4858	if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4859		retval = nv_set_loopback(dev, features);
4860		if (retval != 0)
4861			return retval;
4862	}
4863
4864	if (changed & NETIF_F_RXCSUM) {
4865		spin_lock_irq(&np->lock);
4866
4867		if (features & NETIF_F_RXCSUM)
4868			np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4869		else
4870			np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4871
4872		if (netif_running(dev))
4873			writel(np->txrxctl_bits, base + NvRegTxRxControl);
4874
4875		spin_unlock_irq(&np->lock);
4876	}
4877
4878	if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
4879		nv_vlan_mode(dev, features);
4880
4881	return 0;
4882}
4883
4884static int nv_get_sset_count(struct net_device *dev, int sset)
4885{
4886	struct fe_priv *np = netdev_priv(dev);
4887
4888	switch (sset) {
4889	case ETH_SS_TEST:
4890		if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4891			return NV_TEST_COUNT_EXTENDED;
4892		else
4893			return NV_TEST_COUNT_BASE;
4894	case ETH_SS_STATS:
4895		if (np->driver_data & DEV_HAS_STATISTICS_V3)
4896			return NV_DEV_STATISTICS_V3_COUNT;
4897		else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4898			return NV_DEV_STATISTICS_V2_COUNT;
4899		else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4900			return NV_DEV_STATISTICS_V1_COUNT;
4901		else
4902			return 0;
4903	default:
4904		return -EOPNOTSUPP;
4905	}
4906}
4907
4908static void nv_get_ethtool_stats(struct net_device *dev,
4909				 struct ethtool_stats *estats, u64 *buffer)
4910	__acquires(&netdev_priv(dev)->hwstats_lock)
4911	__releases(&netdev_priv(dev)->hwstats_lock)
4912{
4913	struct fe_priv *np = netdev_priv(dev);
4914
4915	spin_lock_bh(&np->hwstats_lock);
4916	nv_update_stats(dev);
4917	memcpy(buffer, &np->estats,
4918	       nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4919	spin_unlock_bh(&np->hwstats_lock);
4920}
4921
4922static int nv_link_test(struct net_device *dev)
4923{
4924	struct fe_priv *np = netdev_priv(dev);
4925	int mii_status;
4926
4927	mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4928	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4929
4930	/* check phy link status */
4931	if (!(mii_status & BMSR_LSTATUS))
4932		return 0;
4933	else
4934		return 1;
4935}
4936
4937static int nv_register_test(struct net_device *dev)
4938{
4939	u8 __iomem *base = get_hwbase(dev);
4940	int i = 0;
4941	u32 orig_read, new_read;
4942
4943	do {
4944		orig_read = readl(base + nv_registers_test[i].reg);
4945
4946		/* xor with mask to toggle bits */
4947		orig_read ^= nv_registers_test[i].mask;
4948
4949		writel(orig_read, base + nv_registers_test[i].reg);
4950
4951		new_read = readl(base + nv_registers_test[i].reg);
4952
4953		if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4954			return 0;
4955
4956		/* restore original value */
4957		orig_read ^= nv_registers_test[i].mask;
4958		writel(orig_read, base + nv_registers_test[i].reg);
4959
4960	} while (nv_registers_test[++i].reg != 0);
4961
4962	return 1;
4963}
4964
4965static int nv_interrupt_test(struct net_device *dev)
4966{
4967	struct fe_priv *np = netdev_priv(dev);
4968	u8 __iomem *base = get_hwbase(dev);
4969	int ret = 1;
4970	int testcnt;
4971	u32 save_msi_flags, save_poll_interval = 0;
4972
4973	if (netif_running(dev)) {
4974		/* free current irq */
4975		nv_free_irq(dev);
4976		save_poll_interval = readl(base+NvRegPollingInterval);
4977	}
4978
4979	/* flag to test interrupt handler */
4980	np->intr_test = 0;
4981
4982	/* setup test irq */
4983	save_msi_flags = np->msi_flags;
4984	np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4985	np->msi_flags |= 0x001; /* setup 1 vector */
4986	if (nv_request_irq(dev, 1))
4987		return 0;
4988
4989	/* setup timer interrupt */
4990	writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4991	writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4992
4993	nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4994
4995	/* wait for at least one interrupt */
4996	msleep(100);
4997
4998	spin_lock_irq(&np->lock);
4999
5000	/* flag should be set within ISR */
5001	testcnt = np->intr_test;
5002	if (!testcnt)
5003		ret = 2;
5004
5005	nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5006	if (!(np->msi_flags & NV_MSI_X_ENABLED))
5007		writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5008	else
5009		writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5010
5011	spin_unlock_irq(&np->lock);
5012
5013	nv_free_irq(dev);
5014
5015	np->msi_flags = save_msi_flags;
5016
5017	if (netif_running(dev)) {
5018		writel(save_poll_interval, base + NvRegPollingInterval);
5019		writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5020		/* restore original irq */
5021		if (nv_request_irq(dev, 0))
5022			return 0;
5023	}
5024
5025	return ret;
5026}
5027
5028static int nv_loopback_test(struct net_device *dev)
5029{
5030	struct fe_priv *np = netdev_priv(dev);
5031	u8 __iomem *base = get_hwbase(dev);
5032	struct sk_buff *tx_skb, *rx_skb;
5033	dma_addr_t test_dma_addr;
5034	u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
5035	u32 flags;
5036	int len, i, pkt_len;
5037	u8 *pkt_data;
5038	u32 filter_flags = 0;
5039	u32 misc1_flags = 0;
5040	int ret = 1;
5041
5042	if (netif_running(dev)) {
5043		nv_disable_irq(dev);
5044		filter_flags = readl(base + NvRegPacketFilterFlags);
5045		misc1_flags = readl(base + NvRegMisc1);
5046	} else {
5047		nv_txrx_reset(dev);
5048	}
5049
5050	/* reinit driver view of the rx queue */
5051	set_bufsize(dev);
5052	nv_init_ring(dev);
5053
5054	/* setup hardware for loopback */
5055	writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5056	writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5057
5058	/* reinit nic view of the rx queue */
5059	writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5060	setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5061	writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5062		base + NvRegRingSizes);
5063	pci_push(base);
5064
5065	/* restart rx engine */
5066	nv_start_rxtx(dev);
5067
5068	/* setup packet for tx */
5069	pkt_len = ETH_DATA_LEN;
5070	tx_skb = netdev_alloc_skb(dev, pkt_len);
5071	if (!tx_skb) {
5072		ret = 0;
5073		goto out;
5074	}
5075	test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5076				       skb_tailroom(tx_skb),
5077				       PCI_DMA_FROMDEVICE);
5078	if (pci_dma_mapping_error(np->pci_dev,
5079				  test_dma_addr)) {
5080		dev_kfree_skb_any(tx_skb);
5081		goto out;
5082	}
5083	pkt_data = skb_put(tx_skb, pkt_len);
5084	for (i = 0; i < pkt_len; i++)
5085		pkt_data[i] = (u8)(i & 0xff);
5086
5087	if (!nv_optimized(np)) {
5088		np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5089		np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5090	} else {
5091		np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5092		np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5093		np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5094	}
5095	writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5096	pci_push(get_hwbase(dev));
5097
5098	msleep(500);
5099
5100	/* check for rx of the packet */
5101	if (!nv_optimized(np)) {
5102		flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5103		len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5104
5105	} else {
5106		flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5107		len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5108	}
5109
5110	if (flags & NV_RX_AVAIL) {
5111		ret = 0;
5112	} else if (np->desc_ver == DESC_VER_1) {
5113		if (flags & NV_RX_ERROR)
5114			ret = 0;
5115	} else {
5116		if (flags & NV_RX2_ERROR)
5117			ret = 0;
5118	}
5119
5120	if (ret) {
5121		if (len != pkt_len) {
5122			ret = 0;
5123		} else {
5124			rx_skb = np->rx_skb[0].skb;
5125			for (i = 0; i < pkt_len; i++) {
5126				if (rx_skb->data[i] != (u8)(i & 0xff)) {
5127					ret = 0;
5128					break;
5129				}
5130			}
5131		}
5132	}
5133
5134	pci_unmap_single(np->pci_dev, test_dma_addr,
5135		       (skb_end_pointer(tx_skb) - tx_skb->data),
5136		       PCI_DMA_TODEVICE);
5137	dev_kfree_skb_any(tx_skb);
5138 out:
5139	/* stop engines */
5140	nv_stop_rxtx(dev);
5141	nv_txrx_reset(dev);
5142	/* drain rx queue */
5143	nv_drain_rxtx(dev);
5144
5145	if (netif_running(dev)) {
5146		writel(misc1_flags, base + NvRegMisc1);
5147		writel(filter_flags, base + NvRegPacketFilterFlags);
5148		nv_enable_irq(dev);
5149	}
5150
5151	return ret;
5152}
5153
5154static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5155{
5156	struct fe_priv *np = netdev_priv(dev);
5157	u8 __iomem *base = get_hwbase(dev);
5158	int result, count;
5159
5160	count = nv_get_sset_count(dev, ETH_SS_TEST);
5161	memset(buffer, 0, count * sizeof(u64));
5162
5163	if (!nv_link_test(dev)) {
5164		test->flags |= ETH_TEST_FL_FAILED;
5165		buffer[0] = 1;
5166	}
5167
5168	if (test->flags & ETH_TEST_FL_OFFLINE) {
5169		if (netif_running(dev)) {
5170			netif_stop_queue(dev);
5171			nv_napi_disable(dev);
5172			netif_tx_lock_bh(dev);
5173			netif_addr_lock(dev);
5174			spin_lock_irq(&np->lock);
5175			nv_disable_hw_interrupts(dev, np->irqmask);
5176			if (!(np->msi_flags & NV_MSI_X_ENABLED))
5177				writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5178			else
5179				writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5180			/* stop engines */
5181			nv_stop_rxtx(dev);
5182			nv_txrx_reset(dev);
5183			/* drain rx queue */
5184			nv_drain_rxtx(dev);
5185			spin_unlock_irq(&np->lock);
5186			netif_addr_unlock(dev);
5187			netif_tx_unlock_bh(dev);
5188		}
5189
5190		if (!nv_register_test(dev)) {
5191			test->flags |= ETH_TEST_FL_FAILED;
5192			buffer[1] = 1;
5193		}
5194
5195		result = nv_interrupt_test(dev);
5196		if (result != 1) {
5197			test->flags |= ETH_TEST_FL_FAILED;
5198			buffer[2] = 1;
5199		}
5200		if (result == 0) {
5201			/* bail out */
5202			return;
5203		}
5204
5205		if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
5206			test->flags |= ETH_TEST_FL_FAILED;
5207			buffer[3] = 1;
5208		}
5209
5210		if (netif_running(dev)) {
5211			/* reinit driver view of the rx queue */
5212			set_bufsize(dev);
5213			if (nv_init_ring(dev)) {
5214				if (!np->in_shutdown)
5215					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5216			}
5217			/* reinit nic view of the rx queue */
5218			writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5219			setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5220			writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5221				base + NvRegRingSizes);
5222			pci_push(base);
5223			writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5224			pci_push(base);
5225			/* restart rx engine */
5226			nv_start_rxtx(dev);
5227			netif_start_queue(dev);
5228			nv_napi_enable(dev);
5229			nv_enable_hw_interrupts(dev, np->irqmask);
5230		}
5231	}
5232}
5233
5234static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5235{
5236	switch (stringset) {
5237	case ETH_SS_STATS:
5238		memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5239		break;
5240	case ETH_SS_TEST:
5241		memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5242		break;
5243	}
5244}
5245
5246static const struct ethtool_ops ops = {
5247	.get_drvinfo = nv_get_drvinfo,
5248	.get_link = ethtool_op_get_link,
5249	.get_wol = nv_get_wol,
5250	.set_wol = nv_set_wol,
5251	.get_settings = nv_get_settings,
5252	.set_settings = nv_set_settings,
5253	.get_regs_len = nv_get_regs_len,
5254	.get_regs = nv_get_regs,
5255	.nway_reset = nv_nway_reset,
5256	.get_ringparam = nv_get_ringparam,
5257	.set_ringparam = nv_set_ringparam,
5258	.get_pauseparam = nv_get_pauseparam,
5259	.set_pauseparam = nv_set_pauseparam,
5260	.get_strings = nv_get_strings,
5261	.get_ethtool_stats = nv_get_ethtool_stats,
5262	.get_sset_count = nv_get_sset_count,
5263	.self_test = nv_self_test,
5264	.get_ts_info = ethtool_op_get_ts_info,
5265};
5266
5267/* The mgmt unit and driver use a semaphore to access the phy during init */
5268static int nv_mgmt_acquire_sema(struct net_device *dev)
5269{
5270	struct fe_priv *np = netdev_priv(dev);
5271	u8 __iomem *base = get_hwbase(dev);
5272	int i;
5273	u32 tx_ctrl, mgmt_sema;
5274
5275	for (i = 0; i < 10; i++) {
5276		mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5277		if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5278			break;
5279		msleep(500);
5280	}
5281
5282	if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5283		return 0;
5284
5285	for (i = 0; i < 2; i++) {
5286		tx_ctrl = readl(base + NvRegTransmitterControl);
5287		tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5288		writel(tx_ctrl, base + NvRegTransmitterControl);
5289
5290		/* verify that semaphore was acquired */
5291		tx_ctrl = readl(base + NvRegTransmitterControl);
5292		if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5293		    ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5294			np->mgmt_sema = 1;
5295			return 1;
5296		} else
5297			udelay(50);
5298	}
5299
5300	return 0;
5301}
5302
5303static void nv_mgmt_release_sema(struct net_device *dev)
5304{
5305	struct fe_priv *np = netdev_priv(dev);
5306	u8 __iomem *base = get_hwbase(dev);
5307	u32 tx_ctrl;
5308
5309	if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5310		if (np->mgmt_sema) {
5311			tx_ctrl = readl(base + NvRegTransmitterControl);
5312			tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5313			writel(tx_ctrl, base + NvRegTransmitterControl);
5314		}
5315	}
5316}
5317
5318
5319static int nv_mgmt_get_version(struct net_device *dev)
5320{
5321	struct fe_priv *np = netdev_priv(dev);
5322	u8 __iomem *base = get_hwbase(dev);
5323	u32 data_ready = readl(base + NvRegTransmitterControl);
5324	u32 data_ready2 = 0;
5325	unsigned long start;
5326	int ready = 0;
5327
5328	writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5329	writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5330	start = jiffies;
5331	while (time_before(jiffies, start + 5*HZ)) {
5332		data_ready2 = readl(base + NvRegTransmitterControl);
5333		if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5334			ready = 1;
5335			break;
5336		}
5337		schedule_timeout_uninterruptible(1);
5338	}
5339
5340	if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5341		return 0;
5342
5343	np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5344
5345	return 1;
5346}
5347
5348static int nv_open(struct net_device *dev)
5349{
5350	struct fe_priv *np = netdev_priv(dev);
5351	u8 __iomem *base = get_hwbase(dev);
5352	int ret = 1;
5353	int oom, i;
5354	u32 low;
5355
5356	/* power up phy */
5357	mii_rw(dev, np->phyaddr, MII_BMCR,
5358	       mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5359
5360	nv_txrx_gate(dev, false);
5361	/* erase previous misconfiguration */
5362	if (np->driver_data & DEV_HAS_POWER_CNTRL)
5363		nv_mac_reset(dev);
5364	writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5365	writel(0, base + NvRegMulticastAddrB);
5366	writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5367	writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5368	writel(0, base + NvRegPacketFilterFlags);
5369
5370	writel(0, base + NvRegTransmitterControl);
5371	writel(0, base + NvRegReceiverControl);
5372
5373	writel(0, base + NvRegAdapterControl);
5374
5375	if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5376		writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5377
5378	/* initialize descriptor rings */
5379	set_bufsize(dev);
5380	oom = nv_init_ring(dev);
5381
5382	writel(0, base + NvRegLinkSpeed);
5383	writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5384	nv_txrx_reset(dev);
5385	writel(0, base + NvRegUnknownSetupReg6);
5386
5387	np->in_shutdown = 0;
5388
5389	/* give hw rings */
5390	setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5391	writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5392		base + NvRegRingSizes);
5393
5394	writel(np->linkspeed, base + NvRegLinkSpeed);
5395	if (np->desc_ver == DESC_VER_1)
5396		writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5397	else
5398		writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5399	writel(np->txrxctl_bits, base + NvRegTxRxControl);
5400	writel(np->vlanctl_bits, base + NvRegVlanControl);
5401	pci_push(base);
5402	writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5403	if (reg_delay(dev, NvRegUnknownSetupReg5,
5404		      NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5405		      NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5406		netdev_info(dev,
5407			    "%s: SetupReg5, Bit 31 remained off\n", __func__);
5408
5409	writel(0, base + NvRegMIIMask);
5410	writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5411	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5412
5413	writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5414	writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5415	writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5416	writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5417
5418	writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5419
5420	get_random_bytes(&low, sizeof(low));
5421	low &= NVREG_SLOTTIME_MASK;
5422	if (np->desc_ver == DESC_VER_1) {
5423		writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5424	} else {
5425		if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5426			/* setup legacy backoff */
5427			writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5428		} else {
5429			writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5430			nv_gear_backoff_reseed(dev);
5431		}
5432	}
5433	writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5434	writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5435	if (poll_interval == -1) {
5436		if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5437			writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5438		else
5439			writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5440	} else
5441		writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5442	writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5443	writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5444			base + NvRegAdapterControl);
5445	writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5446	writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5447	if (np->wolenabled)
5448		writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5449
5450	i = readl(base + NvRegPowerState);
5451	if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5452		writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5453
5454	pci_push(base);
5455	udelay(10);
5456	writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5457
5458	nv_disable_hw_interrupts(dev, np->irqmask);
5459	pci_push(base);
5460	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5461	writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5462	pci_push(base);
5463
5464	if (nv_request_irq(dev, 0))
5465		goto out_drain;
5466
5467	/* ask for interrupts */
5468	nv_enable_hw_interrupts(dev, np->irqmask);
5469
5470	spin_lock_irq(&np->lock);
5471	writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5472	writel(0, base + NvRegMulticastAddrB);
5473	writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5474	writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5475	writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5476	/* One manual link speed update: Interrupts are enabled, future link
5477	 * speed changes cause interrupts and are handled by nv_link_irq().
5478	 */
5479	{
5480		u32 miistat;
5481		miistat = readl(base + NvRegMIIStatus);
5482		writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5483	}
5484	/* set linkspeed to invalid value, thus force nv_update_linkspeed
5485	 * to init hw */
5486	np->linkspeed = 0;
5487	ret = nv_update_linkspeed(dev);
5488	nv_start_rxtx(dev);
5489	netif_start_queue(dev);
5490	nv_napi_enable(dev);
5491
5492	if (ret) {
5493		netif_carrier_on(dev);
5494	} else {
5495		netdev_info(dev, "no link during initialization\n");
5496		netif_carrier_off(dev);
5497	}
5498	if (oom)
5499		mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5500
5501	/* start statistics timer */
5502	if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5503		mod_timer(&np->stats_poll,
5504			round_jiffies(jiffies + STATS_INTERVAL));
5505
5506	spin_unlock_irq(&np->lock);
5507
5508	/* If the loopback feature was set while the device was down, make sure
5509	 * that it's set correctly now.
5510	 */
5511	if (dev->features & NETIF_F_LOOPBACK)
5512		nv_set_loopback(dev, dev->features);
5513
5514	return 0;
5515out_drain:
5516	nv_drain_rxtx(dev);
5517	return ret;
5518}
5519
5520static int nv_close(struct net_device *dev)
5521{
5522	struct fe_priv *np = netdev_priv(dev);
5523	u8 __iomem *base;
5524
5525	spin_lock_irq(&np->lock);
5526	np->in_shutdown = 1;
5527	spin_unlock_irq(&np->lock);
5528	nv_napi_disable(dev);
5529	synchronize_irq(np->pci_dev->irq);
5530
5531	del_timer_sync(&np->oom_kick);
5532	del_timer_sync(&np->nic_poll);
5533	del_timer_sync(&np->stats_poll);
5534
5535	netif_stop_queue(dev);
5536	spin_lock_irq(&np->lock);
5537	nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5538	nv_stop_rxtx(dev);
5539	nv_txrx_reset(dev);
5540
5541	/* disable interrupts on the nic or we will lock up */
5542	base = get_hwbase(dev);
5543	nv_disable_hw_interrupts(dev, np->irqmask);
5544	pci_push(base);
5545
5546	spin_unlock_irq(&np->lock);
5547
5548	nv_free_irq(dev);
5549
5550	nv_drain_rxtx(dev);
5551
5552	if (np->wolenabled || !phy_power_down) {
5553		nv_txrx_gate(dev, false);
5554		writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5555		nv_start_rx(dev);
5556	} else {
5557		/* power down phy */
5558		mii_rw(dev, np->phyaddr, MII_BMCR,
5559		       mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5560		nv_txrx_gate(dev, true);
5561	}
5562
5563	/* FIXME: power down nic */
5564
5565	return 0;
5566}
5567
5568static const struct net_device_ops nv_netdev_ops = {
5569	.ndo_open		= nv_open,
5570	.ndo_stop		= nv_close,
5571	.ndo_get_stats64	= nv_get_stats64,
5572	.ndo_start_xmit		= nv_start_xmit,
5573	.ndo_tx_timeout		= nv_tx_timeout,
5574	.ndo_change_mtu		= nv_change_mtu,
5575	.ndo_fix_features	= nv_fix_features,
5576	.ndo_set_features	= nv_set_features,
5577	.ndo_validate_addr	= eth_validate_addr,
5578	.ndo_set_mac_address	= nv_set_mac_address,
5579	.ndo_set_rx_mode	= nv_set_multicast,
5580#ifdef CONFIG_NET_POLL_CONTROLLER
5581	.ndo_poll_controller	= nv_poll_controller,
5582#endif
5583};
5584
5585static const struct net_device_ops nv_netdev_ops_optimized = {
5586	.ndo_open		= nv_open,
5587	.ndo_stop		= nv_close,
5588	.ndo_get_stats64	= nv_get_stats64,
5589	.ndo_start_xmit		= nv_start_xmit_optimized,
5590	.ndo_tx_timeout		= nv_tx_timeout,
5591	.ndo_change_mtu		= nv_change_mtu,
5592	.ndo_fix_features	= nv_fix_features,
5593	.ndo_set_features	= nv_set_features,
5594	.ndo_validate_addr	= eth_validate_addr,
5595	.ndo_set_mac_address	= nv_set_mac_address,
5596	.ndo_set_rx_mode	= nv_set_multicast,
5597#ifdef CONFIG_NET_POLL_CONTROLLER
5598	.ndo_poll_controller	= nv_poll_controller,
5599#endif
5600};
5601
5602static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5603{
5604	struct net_device *dev;
5605	struct fe_priv *np;
5606	unsigned long addr;
5607	u8 __iomem *base;
5608	int err, i;
5609	u32 powerstate, txreg;
5610	u32 phystate_orig = 0, phystate;
5611	int phyinitialized = 0;
5612	static int printed_version;
5613
5614	if (!printed_version++)
5615		pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5616			FORCEDETH_VERSION);
5617
5618	dev = alloc_etherdev(sizeof(struct fe_priv));
5619	err = -ENOMEM;
5620	if (!dev)
5621		goto out;
5622
5623	np = netdev_priv(dev);
5624	np->dev = dev;
5625	np->pci_dev = pci_dev;
5626	spin_lock_init(&np->lock);
5627	spin_lock_init(&np->hwstats_lock);
5628	SET_NETDEV_DEV(dev, &pci_dev->dev);
5629	u64_stats_init(&np->swstats_rx_syncp);
5630	u64_stats_init(&np->swstats_tx_syncp);
5631
5632	setup_timer(&np->oom_kick, nv_do_rx_refill, (unsigned long)dev);
5633	setup_timer(&np->nic_poll, nv_do_nic_poll, (unsigned long)dev);
5634	init_timer_deferrable(&np->stats_poll);
5635	np->stats_poll.data = (unsigned long) dev;
5636	np->stats_poll.function = nv_do_stats_poll;	/* timer handler */
5637
5638	err = pci_enable_device(pci_dev);
5639	if (err)
5640		goto out_free;
5641
5642	pci_set_master(pci_dev);
5643
5644	err = pci_request_regions(pci_dev, DRV_NAME);
5645	if (err < 0)
5646		goto out_disable;
5647
5648	if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5649		np->register_size = NV_PCI_REGSZ_VER3;
5650	else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5651		np->register_size = NV_PCI_REGSZ_VER2;
5652	else
5653		np->register_size = NV_PCI_REGSZ_VER1;
5654
5655	err = -EINVAL;
5656	addr = 0;
5657	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5658		if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5659				pci_resource_len(pci_dev, i) >= np->register_size) {
5660			addr = pci_resource_start(pci_dev, i);
5661			break;
5662		}
5663	}
5664	if (i == DEVICE_COUNT_RESOURCE) {
5665		dev_info(&pci_dev->dev, "Couldn't find register window\n");
5666		goto out_relreg;
5667	}
5668
5669	/* copy of driver data */
5670	np->driver_data = id->driver_data;
5671	/* copy of device id */
5672	np->device_id = id->device;
5673
5674	/* handle different descriptor versions */
5675	if (id->driver_data & DEV_HAS_HIGH_DMA) {
5676		/* packet format 3: supports 40-bit addressing */
5677		np->desc_ver = DESC_VER_3;
5678		np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5679		if (dma_64bit) {
5680			if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5681				dev_info(&pci_dev->dev,
5682					 "64-bit DMA failed, using 32-bit addressing\n");
5683			else
5684				dev->features |= NETIF_F_HIGHDMA;
5685			if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5686				dev_info(&pci_dev->dev,
5687					 "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5688			}
5689		}
5690	} else if (id->driver_data & DEV_HAS_LARGEDESC) {
5691		/* packet format 2: supports jumbo frames */
5692		np->desc_ver = DESC_VER_2;
5693		np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5694	} else {
5695		/* original packet format */
5696		np->desc_ver = DESC_VER_1;
5697		np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5698	}
5699
5700	np->pkt_limit = NV_PKTLIMIT_1;
5701	if (id->driver_data & DEV_HAS_LARGEDESC)
5702		np->pkt_limit = NV_PKTLIMIT_2;
5703
5704	if (id->driver_data & DEV_HAS_CHECKSUM) {
5705		np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5706		dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5707			NETIF_F_TSO | NETIF_F_RXCSUM;
5708	}
5709
5710	np->vlanctl_bits = 0;
5711	if (id->driver_data & DEV_HAS_VLAN) {
5712		np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5713		dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
5714				    NETIF_F_HW_VLAN_CTAG_TX;
5715	}
5716
5717	dev->features |= dev->hw_features;
5718
5719	/* Add loopback capability to the device. */
5720	dev->hw_features |= NETIF_F_LOOPBACK;
5721
5722	np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5723	if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5724	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5725	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5726		np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5727	}
5728
5729	err = -ENOMEM;
5730	np->base = ioremap(addr, np->register_size);
5731	if (!np->base)
5732		goto out_relreg;
5733
5734	np->rx_ring_size = RX_RING_DEFAULT;
5735	np->tx_ring_size = TX_RING_DEFAULT;
5736
5737	if (!nv_optimized(np)) {
5738		np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5739					sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5740					&np->ring_addr);
5741		if (!np->rx_ring.orig)
5742			goto out_unmap;
5743		np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5744	} else {
5745		np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5746					sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5747					&np->ring_addr);
5748		if (!np->rx_ring.ex)
5749			goto out_unmap;
5750		np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5751	}
5752	np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5753	np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5754	if (!np->rx_skb || !np->tx_skb)
5755		goto out_freering;
5756
5757	if (!nv_optimized(np))
5758		dev->netdev_ops = &nv_netdev_ops;
5759	else
5760		dev->netdev_ops = &nv_netdev_ops_optimized;
5761
5762	netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5763	dev->ethtool_ops = &ops;
5764	dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5765
5766	pci_set_drvdata(pci_dev, dev);
5767
5768	/* read the mac address */
5769	base = get_hwbase(dev);
5770	np->orig_mac[0] = readl(base + NvRegMacAddrA);
5771	np->orig_mac[1] = readl(base + NvRegMacAddrB);
5772
5773	/* check the workaround bit for correct mac address order */
5774	txreg = readl(base + NvRegTransmitPoll);
5775	if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5776		/* mac address is already in correct order */
5777		dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5778		dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5779		dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5780		dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5781		dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5782		dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5783	} else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5784		/* mac address is already in correct order */
5785		dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5786		dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5787		dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5788		dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5789		dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5790		dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5791		/*
5792		 * Set orig mac address back to the reversed version.
5793		 * This flag will be cleared during low power transition.
5794		 * Therefore, we should always put back the reversed address.
5795		 */
5796		np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5797			(dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5798		np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5799	} else {
5800		/* need to reverse mac address to correct order */
5801		dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5802		dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5803		dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5804		dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5805		dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5806		dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5807		writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5808		dev_dbg(&pci_dev->dev,
5809			"%s: set workaround bit for reversed mac addr\n",
5810			__func__);
5811	}
5812
5813	if (!is_valid_ether_addr(dev->dev_addr)) {
5814		/*
5815		 * Bad mac address. At least one bios sets the mac address
5816		 * to 01:23:45:67:89:ab
5817		 */
5818		dev_err(&pci_dev->dev,
5819			"Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5820			dev->dev_addr);
5821		eth_hw_addr_random(dev);
5822		dev_err(&pci_dev->dev,
5823			"Using random MAC address: %pM\n", dev->dev_addr);
5824	}
5825
5826	/* set mac address */
5827	nv_copy_mac_to_hw(dev);
5828
5829	/* disable WOL */
5830	writel(0, base + NvRegWakeUpFlags);
5831	np->wolenabled = 0;
5832	device_set_wakeup_enable(&pci_dev->dev, false);
5833
5834	if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5835
5836		/* take phy and nic out of low power mode */
5837		powerstate = readl(base + NvRegPowerState2);
5838		powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5839		if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5840		    pci_dev->revision >= 0xA3)
5841			powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5842		writel(powerstate, base + NvRegPowerState2);
5843	}
5844
5845	if (np->desc_ver == DESC_VER_1)
5846		np->tx_flags = NV_TX_VALID;
5847	else
5848		np->tx_flags = NV_TX2_VALID;
5849
5850	np->msi_flags = 0;
5851	if ((id->driver_data & DEV_HAS_MSI) && msi)
5852		np->msi_flags |= NV_MSI_CAPABLE;
5853
5854	if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5855		/* msix has had reported issues when modifying irqmask
5856		   as in the case of napi, therefore, disable for now
5857		*/
5858#if 0
5859		np->msi_flags |= NV_MSI_X_CAPABLE;
5860#endif
5861	}
5862
5863	if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5864		np->irqmask = NVREG_IRQMASK_CPU;
5865		if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5866			np->msi_flags |= 0x0001;
5867	} else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5868		   !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5869		/* start off in throughput mode */
5870		np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5871		/* remove support for msix mode */
5872		np->msi_flags &= ~NV_MSI_X_CAPABLE;
5873	} else {
5874		optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5875		np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5876		if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5877			np->msi_flags |= 0x0003;
5878	}
5879
5880	if (id->driver_data & DEV_NEED_TIMERIRQ)
5881		np->irqmask |= NVREG_IRQ_TIMER;
5882	if (id->driver_data & DEV_NEED_LINKTIMER) {
5883		np->need_linktimer = 1;
5884		np->link_timeout = jiffies + LINK_TIMEOUT;
5885	} else {
5886		np->need_linktimer = 0;
5887	}
5888
5889	/* Limit the number of tx's outstanding for hw bug */
5890	if (id->driver_data & DEV_NEED_TX_LIMIT) {
5891		np->tx_limit = 1;
5892		if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5893		    pci_dev->revision >= 0xA2)
5894			np->tx_limit = 0;
5895	}
5896
5897	/* clear phy state and temporarily halt phy interrupts */
5898	writel(0, base + NvRegMIIMask);
5899	phystate = readl(base + NvRegAdapterControl);
5900	if (phystate & NVREG_ADAPTCTL_RUNNING) {
5901		phystate_orig = 1;
5902		phystate &= ~NVREG_ADAPTCTL_RUNNING;
5903		writel(phystate, base + NvRegAdapterControl);
5904	}
5905	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5906
5907	if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5908		/* management unit running on the mac? */
5909		if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5910		    (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5911		    nv_mgmt_acquire_sema(dev) &&
5912		    nv_mgmt_get_version(dev)) {
5913			np->mac_in_use = 1;
5914			if (np->mgmt_version > 0)
5915				np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5916			/* management unit setup the phy already? */
5917			if (np->mac_in_use &&
5918			    ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5919			     NVREG_XMITCTL_SYNC_PHY_INIT)) {
5920				/* phy is inited by mgmt unit */
5921				phyinitialized = 1;
5922			} else {
5923				/* we need to init the phy */
5924			}
5925		}
5926	}
5927
5928	/* find a suitable phy */
5929	for (i = 1; i <= 32; i++) {
5930		int id1, id2;
5931		int phyaddr = i & 0x1F;
5932
5933		spin_lock_irq(&np->lock);
5934		id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5935		spin_unlock_irq(&np->lock);
5936		if (id1 < 0 || id1 == 0xffff)
5937			continue;
5938		spin_lock_irq(&np->lock);
5939		id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5940		spin_unlock_irq(&np->lock);
5941		if (id2 < 0 || id2 == 0xffff)
5942			continue;
5943
5944		np->phy_model = id2 & PHYID2_MODEL_MASK;
5945		id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5946		id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5947		np->phyaddr = phyaddr;
5948		np->phy_oui = id1 | id2;
5949
5950		/* Realtek hardcoded phy id1 to all zero's on certain phys */
5951		if (np->phy_oui == PHY_OUI_REALTEK2)
5952			np->phy_oui = PHY_OUI_REALTEK;
5953		/* Setup phy revision for Realtek */
5954		if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5955			np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5956
5957		break;
5958	}
5959	if (i == 33) {
5960		dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5961		goto out_error;
5962	}
5963
5964	if (!phyinitialized) {
5965		/* reset it */
5966		phy_init(dev);
5967	} else {
5968		/* see if it is a gigabit phy */
5969		u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5970		if (mii_status & PHY_GIGABIT)
5971			np->gigabit = PHY_GIGABIT;
5972	}
5973
5974	/* set default link speed settings */
5975	np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5976	np->duplex = 0;
5977	np->autoneg = 1;
5978
5979	err = register_netdev(dev);
5980	if (err) {
5981		dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5982		goto out_error;
5983	}
5984
5985	netif_carrier_off(dev);
5986
5987	/* Some NICs freeze when TX pause is enabled while NIC is
5988	 * down, and this stays across warm reboots. The sequence
5989	 * below should be enough to recover from that state.
5990	 */
5991	nv_update_pause(dev, 0);
5992	nv_start_tx(dev);
5993	nv_stop_tx(dev);
5994
5995	if (id->driver_data & DEV_HAS_VLAN)
5996		nv_vlan_mode(dev, dev->features);
5997
5998	dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
5999		 dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
6000
6001	dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
6002		 dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
6003		 dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
6004			"csum " : "",
6005		 dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
6006				  NETIF_F_HW_VLAN_CTAG_TX) ?
6007			"vlan " : "",
6008		 dev->features & (NETIF_F_LOOPBACK) ?
6009			"loopback " : "",
6010		 id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
6011		 id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
6012		 id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
6013		 np->gigabit == PHY_GIGABIT ? "gbit " : "",
6014		 np->need_linktimer ? "lnktim " : "",
6015		 np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
6016		 np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
6017		 np->desc_ver);
6018
6019	return 0;
6020
6021out_error:
6022	if (phystate_orig)
6023		writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
6024out_freering:
6025	free_rings(dev);
6026out_unmap:
6027	iounmap(get_hwbase(dev));
6028out_relreg:
6029	pci_release_regions(pci_dev);
6030out_disable:
6031	pci_disable_device(pci_dev);
6032out_free:
6033	free_netdev(dev);
6034out:
6035	return err;
6036}
6037
6038static void nv_restore_phy(struct net_device *dev)
6039{
6040	struct fe_priv *np = netdev_priv(dev);
6041	u16 phy_reserved, mii_control;
6042
6043	if (np->phy_oui == PHY_OUI_REALTEK &&
6044	    np->phy_model == PHY_MODEL_REALTEK_8201 &&
6045	    phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6046		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6047		phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6048		phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6049		phy_reserved |= PHY_REALTEK_INIT8;
6050		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6051		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6052
6053		/* restart auto negotiation */
6054		mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6055		mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6056		mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6057	}
6058}
6059
6060static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6061{
6062	struct net_device *dev = pci_get_drvdata(pci_dev);
6063	struct fe_priv *np = netdev_priv(dev);
6064	u8 __iomem *base = get_hwbase(dev);
6065
6066	/* special op: write back the misordered MAC address - otherwise
6067	 * the next nv_probe would see a wrong address.
6068	 */
6069	writel(np->orig_mac[0], base + NvRegMacAddrA);
6070	writel(np->orig_mac[1], base + NvRegMacAddrB);
6071	writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6072	       base + NvRegTransmitPoll);
6073}
6074
6075static void nv_remove(struct pci_dev *pci_dev)
6076{
6077	struct net_device *dev = pci_get_drvdata(pci_dev);
6078
6079	unregister_netdev(dev);
6080
6081	nv_restore_mac_addr(pci_dev);
6082
6083	/* restore any phy related changes */
6084	nv_restore_phy(dev);
6085
6086	nv_mgmt_release_sema(dev);
6087
6088	/* free all structures */
6089	free_rings(dev);
6090	iounmap(get_hwbase(dev));
6091	pci_release_regions(pci_dev);
6092	pci_disable_device(pci_dev);
6093	free_netdev(dev);
6094}
6095
6096#ifdef CONFIG_PM_SLEEP
6097static int nv_suspend(struct device *device)
6098{
6099	struct pci_dev *pdev = to_pci_dev(device);
6100	struct net_device *dev = pci_get_drvdata(pdev);
6101	struct fe_priv *np = netdev_priv(dev);
6102	u8 __iomem *base = get_hwbase(dev);
6103	int i;
6104
6105	if (netif_running(dev)) {
6106		/* Gross. */
6107		nv_close(dev);
6108	}
6109	netif_device_detach(dev);
6110
6111	/* save non-pci configuration space */
6112	for (i = 0; i <= np->register_size/sizeof(u32); i++)
6113		np->saved_config_space[i] = readl(base + i*sizeof(u32));
6114
6115	return 0;
6116}
6117
6118static int nv_resume(struct device *device)
6119{
6120	struct pci_dev *pdev = to_pci_dev(device);
6121	struct net_device *dev = pci_get_drvdata(pdev);
6122	struct fe_priv *np = netdev_priv(dev);
6123	u8 __iomem *base = get_hwbase(dev);
6124	int i, rc = 0;
6125
6126	/* restore non-pci configuration space */
6127	for (i = 0; i <= np->register_size/sizeof(u32); i++)
6128		writel(np->saved_config_space[i], base+i*sizeof(u32));
6129
6130	if (np->driver_data & DEV_NEED_MSI_FIX)
6131		pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6132
6133	/* restore phy state, including autoneg */
6134	phy_init(dev);
6135
6136	netif_device_attach(dev);
6137	if (netif_running(dev)) {
6138		rc = nv_open(dev);
6139		nv_set_multicast(dev);
6140	}
6141	return rc;
6142}
6143
6144static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6145#define NV_PM_OPS (&nv_pm_ops)
6146
6147#else
6148#define NV_PM_OPS NULL
6149#endif /* CONFIG_PM_SLEEP */
6150
6151#ifdef CONFIG_PM
6152static void nv_shutdown(struct pci_dev *pdev)
6153{
6154	struct net_device *dev = pci_get_drvdata(pdev);
6155	struct fe_priv *np = netdev_priv(dev);
6156
6157	if (netif_running(dev))
6158		nv_close(dev);
6159
6160	/*
6161	 * Restore the MAC so a kernel started by kexec won't get confused.
6162	 * If we really go for poweroff, we must not restore the MAC,
6163	 * otherwise the MAC for WOL will be reversed at least on some boards.
6164	 */
6165	if (system_state != SYSTEM_POWER_OFF)
6166		nv_restore_mac_addr(pdev);
6167
6168	pci_disable_device(pdev);
6169	/*
6170	 * Apparently it is not possible to reinitialise from D3 hot,
6171	 * only put the device into D3 if we really go for poweroff.
6172	 */
6173	if (system_state == SYSTEM_POWER_OFF) {
6174		pci_wake_from_d3(pdev, np->wolenabled);
6175		pci_set_power_state(pdev, PCI_D3hot);
6176	}
6177}
6178#else
6179#define nv_shutdown NULL
6180#endif /* CONFIG_PM */
6181
6182static const struct pci_device_id pci_tbl[] = {
6183	{	/* nForce Ethernet Controller */
6184		PCI_DEVICE(0x10DE, 0x01C3),
6185		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6186	},
6187	{	/* nForce2 Ethernet Controller */
6188		PCI_DEVICE(0x10DE, 0x0066),
6189		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6190	},
6191	{	/* nForce3 Ethernet Controller */
6192		PCI_DEVICE(0x10DE, 0x00D6),
6193		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6194	},
6195	{	/* nForce3 Ethernet Controller */
6196		PCI_DEVICE(0x10DE, 0x0086),
6197		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6198	},
6199	{	/* nForce3 Ethernet Controller */
6200		PCI_DEVICE(0x10DE, 0x008C),
6201		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6202	},
6203	{	/* nForce3 Ethernet Controller */
6204		PCI_DEVICE(0x10DE, 0x00E6),
6205		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6206	},
6207	{	/* nForce3 Ethernet Controller */
6208		PCI_DEVICE(0x10DE, 0x00DF),
6209		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6210	},
6211	{	/* CK804 Ethernet Controller */
6212		PCI_DEVICE(0x10DE, 0x0056),
6213		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6214	},
6215	{	/* CK804 Ethernet Controller */
6216		PCI_DEVICE(0x10DE, 0x0057),
6217		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6218	},
6219	{	/* MCP04 Ethernet Controller */
6220		PCI_DEVICE(0x10DE, 0x0037),
6221		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6222	},
6223	{	/* MCP04 Ethernet Controller */
6224		PCI_DEVICE(0x10DE, 0x0038),
6225		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6226	},
6227	{	/* MCP51 Ethernet Controller */
6228		PCI_DEVICE(0x10DE, 0x0268),
6229		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6230	},
6231	{	/* MCP51 Ethernet Controller */
6232		PCI_DEVICE(0x10DE, 0x0269),
6233		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6234	},
6235	{	/* MCP55 Ethernet Controller */
6236		PCI_DEVICE(0x10DE, 0x0372),
6237		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6238	},
6239	{	/* MCP55 Ethernet Controller */
6240		PCI_DEVICE(0x10DE, 0x0373),
6241		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
6242	},
6243	{	/* MCP61 Ethernet Controller */
6244		PCI_DEVICE(0x10DE, 0x03E5),
6245		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6246	},
6247	{	/* MCP61 Ethernet Controller */
6248		PCI_DEVICE(0x10DE, 0x03E6),
6249		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6250	},
6251	{	/* MCP61 Ethernet Controller */
6252		PCI_DEVICE(0x10DE, 0x03EE),
6253		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6254	},
6255	{	/* MCP61 Ethernet Controller */
6256		PCI_DEVICE(0x10DE, 0x03EF),
6257		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
6258	},
6259	{	/* MCP65 Ethernet Controller */
6260		PCI_DEVICE(0x10DE, 0x0450),
6261		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6262	},
6263	{	/* MCP65 Ethernet Controller */
6264		PCI_DEVICE(0x10DE, 0x0451),
6265		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6266	},
6267	{	/* MCP65 Ethernet Controller */
6268		PCI_DEVICE(0x10DE, 0x0452),
6269		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6270	},
6271	{	/* MCP65 Ethernet Controller */
6272		PCI_DEVICE(0x10DE, 0x0453),
6273		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6274	},
6275	{	/* MCP67 Ethernet Controller */
6276		PCI_DEVICE(0x10DE, 0x054C),
6277		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6278	},
6279	{	/* MCP67 Ethernet Controller */
6280		PCI_DEVICE(0x10DE, 0x054D),
6281		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6282	},
6283	{	/* MCP67 Ethernet Controller */
6284		PCI_DEVICE(0x10DE, 0x054E),
6285		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6286	},
6287	{	/* MCP67 Ethernet Controller */
6288		PCI_DEVICE(0x10DE, 0x054F),
6289		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6290	},
6291	{	/* MCP73 Ethernet Controller */
6292		PCI_DEVICE(0x10DE, 0x07DC),
6293		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6294	},
6295	{	/* MCP73 Ethernet Controller */
6296		PCI_DEVICE(0x10DE, 0x07DD),
6297		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6298	},
6299	{	/* MCP73 Ethernet Controller */
6300		PCI_DEVICE(0x10DE, 0x07DE),
6301		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6302	},
6303	{	/* MCP73 Ethernet Controller */
6304		PCI_DEVICE(0x10DE, 0x07DF),
6305		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
6306	},
6307	{	/* MCP77 Ethernet Controller */
6308		PCI_DEVICE(0x10DE, 0x0760),
6309		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6310	},
6311	{	/* MCP77 Ethernet Controller */
6312		PCI_DEVICE(0x10DE, 0x0761),
6313		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6314	},
6315	{	/* MCP77 Ethernet Controller */
6316		PCI_DEVICE(0x10DE, 0x0762),
6317		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6318	},
6319	{	/* MCP77 Ethernet Controller */
6320		PCI_DEVICE(0x10DE, 0x0763),
6321		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6322	},
6323	{	/* MCP79 Ethernet Controller */
6324		PCI_DEVICE(0x10DE, 0x0AB0),
6325		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6326	},
6327	{	/* MCP79 Ethernet Controller */
6328		PCI_DEVICE(0x10DE, 0x0AB1),
6329		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6330	},
6331	{	/* MCP79 Ethernet Controller */
6332		PCI_DEVICE(0x10DE, 0x0AB2),
6333		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6334	},
6335	{	/* MCP79 Ethernet Controller */
6336		PCI_DEVICE(0x10DE, 0x0AB3),
6337		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
6338	},
6339	{	/* MCP89 Ethernet Controller */
6340		PCI_DEVICE(0x10DE, 0x0D7D),
6341		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX,
6342	},
6343	{0,},
6344};
6345
6346static struct pci_driver forcedeth_pci_driver = {
6347	.name		= DRV_NAME,
6348	.id_table	= pci_tbl,
6349	.probe		= nv_probe,
6350	.remove		= nv_remove,
6351	.shutdown	= nv_shutdown,
6352	.driver.pm	= NV_PM_OPS,
6353};
6354
6355module_param(max_interrupt_work, int, 0);
6356MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6357module_param(optimization_mode, int, 0);
6358MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
6359module_param(poll_interval, int, 0);
6360MODULE_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.");
6361module_param(msi, int, 0);
6362MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6363module_param(msix, int, 0);
6364MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6365module_param(dma_64bit, int, 0);
6366MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6367module_param(phy_cross, int, 0);
6368MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6369module_param(phy_power_down, int, 0);
6370MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6371module_param(debug_tx_timeout, bool, 0);
6372MODULE_PARM_DESC(debug_tx_timeout,
6373		 "Dump tx related registers and ring when tx_timeout happens");
6374
6375module_pci_driver(forcedeth_pci_driver);
6376MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6377MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6378MODULE_LICENSE("GPL");
6379MODULE_DEVICE_TABLE(pci, pci_tbl);