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	old_mtu = dev->mtu;
3012	dev->mtu = new_mtu;
3013
3014	/* return early if the buffer sizes will not change */
3015	if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
3016		return 0;
3017
3018	/* synchronized against open : rtnl_lock() held by caller */
3019	if (netif_running(dev)) {
3020		u8 __iomem *base = get_hwbase(dev);
3021		/*
3022		 * It seems that the nic preloads valid ring entries into an
3023		 * internal buffer. The procedure for flushing everything is
3024		 * guessed, there is probably a simpler approach.
3025		 * Changing the MTU is a rare event, it shouldn't matter.
3026		 */
3027		nv_disable_irq(dev);
3028		nv_napi_disable(dev);
3029		netif_tx_lock_bh(dev);
3030		netif_addr_lock(dev);
3031		spin_lock(&np->lock);
3032		/* stop engines */
3033		nv_stop_rxtx(dev);
3034		nv_txrx_reset(dev);
3035		/* drain rx queue */
3036		nv_drain_rxtx(dev);
3037		/* reinit driver view of the rx queue */
3038		set_bufsize(dev);
3039		if (nv_init_ring(dev)) {
3040			if (!np->in_shutdown)
3041				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3042		}
3043		/* reinit nic view of the rx queue */
3044		writel(np->rx_buf_sz, base + NvRegOffloadConfig);
3045		setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
3046		writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
3047			base + NvRegRingSizes);
3048		pci_push(base);
3049		writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
3050		pci_push(base);
3051
3052		/* restart rx engine */
3053		nv_start_rxtx(dev);
3054		spin_unlock(&np->lock);
3055		netif_addr_unlock(dev);
3056		netif_tx_unlock_bh(dev);
3057		nv_napi_enable(dev);
3058		nv_enable_irq(dev);
3059	}
3060	return 0;
3061}
3062
3063static void nv_copy_mac_to_hw(struct net_device *dev)
3064{
3065	u8 __iomem *base = get_hwbase(dev);
3066	u32 mac[2];
3067
3068	mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
3069			(dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
3070	mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
3071
3072	writel(mac[0], base + NvRegMacAddrA);
3073	writel(mac[1], base + NvRegMacAddrB);
3074}
3075
3076/*
3077 * nv_set_mac_address: dev->set_mac_address function
3078 * Called with rtnl_lock() held.
3079 */
3080static int nv_set_mac_address(struct net_device *dev, void *addr)
3081{
3082	struct fe_priv *np = netdev_priv(dev);
3083	struct sockaddr *macaddr = (struct sockaddr *)addr;
3084
3085	if (!is_valid_ether_addr(macaddr->sa_data))
3086		return -EADDRNOTAVAIL;
3087
3088	/* synchronized against open : rtnl_lock() held by caller */
3089	memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
3090
3091	if (netif_running(dev)) {
3092		netif_tx_lock_bh(dev);
3093		netif_addr_lock(dev);
3094		spin_lock_irq(&np->lock);
3095
3096		/* stop rx engine */
3097		nv_stop_rx(dev);
3098
3099		/* set mac address */
3100		nv_copy_mac_to_hw(dev);
3101
3102		/* restart rx engine */
3103		nv_start_rx(dev);
3104		spin_unlock_irq(&np->lock);
3105		netif_addr_unlock(dev);
3106		netif_tx_unlock_bh(dev);
3107	} else {
3108		nv_copy_mac_to_hw(dev);
3109	}
3110	return 0;
3111}
3112
3113/*
3114 * nv_set_multicast: dev->set_multicast function
3115 * Called with netif_tx_lock held.
3116 */
3117static void nv_set_multicast(struct net_device *dev)
3118{
3119	struct fe_priv *np = netdev_priv(dev);
3120	u8 __iomem *base = get_hwbase(dev);
3121	u32 addr[2];
3122	u32 mask[2];
3123	u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
3124
3125	memset(addr, 0, sizeof(addr));
3126	memset(mask, 0, sizeof(mask));
3127
3128	if (dev->flags & IFF_PROMISC) {
3129		pff |= NVREG_PFF_PROMISC;
3130	} else {
3131		pff |= NVREG_PFF_MYADDR;
3132
3133		if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
3134			u32 alwaysOff[2];
3135			u32 alwaysOn[2];
3136
3137			alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
3138			if (dev->flags & IFF_ALLMULTI) {
3139				alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
3140			} else {
3141				struct netdev_hw_addr *ha;
3142
3143				netdev_for_each_mc_addr(ha, dev) {
3144					unsigned char *hw_addr = ha->addr;
3145					u32 a, b;
3146
3147					a = le32_to_cpu(*(__le32 *) hw_addr);
3148					b = le16_to_cpu(*(__le16 *) (&hw_addr[4]));
3149					alwaysOn[0] &= a;
3150					alwaysOff[0] &= ~a;
3151					alwaysOn[1] &= b;
3152					alwaysOff[1] &= ~b;
3153				}
3154			}
3155			addr[0] = alwaysOn[0];
3156			addr[1] = alwaysOn[1];
3157			mask[0] = alwaysOn[0] | alwaysOff[0];
3158			mask[1] = alwaysOn[1] | alwaysOff[1];
3159		} else {
3160			mask[0] = NVREG_MCASTMASKA_NONE;
3161			mask[1] = NVREG_MCASTMASKB_NONE;
3162		}
3163	}
3164	addr[0] |= NVREG_MCASTADDRA_FORCE;
3165	pff |= NVREG_PFF_ALWAYS;
3166	spin_lock_irq(&np->lock);
3167	nv_stop_rx(dev);
3168	writel(addr[0], base + NvRegMulticastAddrA);
3169	writel(addr[1], base + NvRegMulticastAddrB);
3170	writel(mask[0], base + NvRegMulticastMaskA);
3171	writel(mask[1], base + NvRegMulticastMaskB);
3172	writel(pff, base + NvRegPacketFilterFlags);
3173	nv_start_rx(dev);
3174	spin_unlock_irq(&np->lock);
3175}
3176
3177static void nv_update_pause(struct net_device *dev, u32 pause_flags)
3178{
3179	struct fe_priv *np = netdev_priv(dev);
3180	u8 __iomem *base = get_hwbase(dev);
3181
3182	np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
3183
3184	if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
3185		u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
3186		if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
3187			writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
3188			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3189		} else {
3190			writel(pff, base + NvRegPacketFilterFlags);
3191		}
3192	}
3193	if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
3194		u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
3195		if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
3196			u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
3197			if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
3198				pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
3199			if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
3200				pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
3201				/* limit the number of tx pause frames to a default of 8 */
3202				writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
3203			}
3204			writel(pause_enable,  base + NvRegTxPauseFrame);
3205			writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
3206			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3207		} else {
3208			writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
3209			writel(regmisc, base + NvRegMisc1);
3210		}
3211	}
3212}
3213
3214static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
3215{
3216	struct fe_priv *np = netdev_priv(dev);
3217	u8 __iomem *base = get_hwbase(dev);
3218	u32 phyreg, txreg;
3219	int mii_status;
3220
3221	np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
3222	np->duplex = duplex;
3223
3224	/* see if gigabit phy */
3225	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3226	if (mii_status & PHY_GIGABIT) {
3227		np->gigabit = PHY_GIGABIT;
3228		phyreg = readl(base + NvRegSlotTime);
3229		phyreg &= ~(0x3FF00);
3230		if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
3231			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3232		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
3233			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3234		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3235			phyreg |= NVREG_SLOTTIME_1000_FULL;
3236		writel(phyreg, base + NvRegSlotTime);
3237	}
3238
3239	phyreg = readl(base + NvRegPhyInterface);
3240	phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3241	if (np->duplex == 0)
3242		phyreg |= PHY_HALF;
3243	if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3244		phyreg |= PHY_100;
3245	else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3246							NVREG_LINKSPEED_1000)
3247		phyreg |= PHY_1000;
3248	writel(phyreg, base + NvRegPhyInterface);
3249
3250	if (phyreg & PHY_RGMII) {
3251		if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3252							NVREG_LINKSPEED_1000)
3253			txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3254		else
3255			txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3256	} else {
3257		txreg = NVREG_TX_DEFERRAL_DEFAULT;
3258	}
3259	writel(txreg, base + NvRegTxDeferral);
3260
3261	if (np->desc_ver == DESC_VER_1) {
3262		txreg = NVREG_TX_WM_DESC1_DEFAULT;
3263	} else {
3264		if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
3265					 NVREG_LINKSPEED_1000)
3266			txreg = NVREG_TX_WM_DESC2_3_1000;
3267		else
3268			txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3269	}
3270	writel(txreg, base + NvRegTxWatermark);
3271
3272	writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3273			base + NvRegMisc1);
3274	pci_push(base);
3275	writel(np->linkspeed, base + NvRegLinkSpeed);
3276	pci_push(base);
3277
3278	return;
3279}
3280
3281/**
3282 * nv_update_linkspeed - Setup the MAC according to the link partner
3283 * @dev: Network device to be configured
3284 *
3285 * The function queries the PHY and checks if there is a link partner.
3286 * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
3287 * set to 10 MBit HD.
3288 *
3289 * The function returns 0 if there is no link partner and 1 if there is
3290 * a good link partner.
3291 */
3292static int nv_update_linkspeed(struct net_device *dev)
3293{
3294	struct fe_priv *np = netdev_priv(dev);
3295	u8 __iomem *base = get_hwbase(dev);
3296	int adv = 0;
3297	int lpa = 0;
3298	int adv_lpa, adv_pause, lpa_pause;
3299	int newls = np->linkspeed;
3300	int newdup = np->duplex;
3301	int mii_status;
3302	u32 bmcr;
3303	int retval = 0;
3304	u32 control_1000, status_1000, phyreg, pause_flags, txreg;
3305	u32 txrxFlags = 0;
3306	u32 phy_exp;
3307
3308	/* If device loopback is enabled, set carrier on and enable max link
3309	 * speed.
3310	 */
3311	bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
3312	if (bmcr & BMCR_LOOPBACK) {
3313		if (netif_running(dev)) {
3314			nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
3315			if (!netif_carrier_ok(dev))
3316				netif_carrier_on(dev);
3317		}
3318		return 1;
3319	}
3320
3321	/* BMSR_LSTATUS is latched, read it twice:
3322	 * we want the current value.
3323	 */
3324	mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3325	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
3326
3327	if (!(mii_status & BMSR_LSTATUS)) {
3328		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3329		newdup = 0;
3330		retval = 0;
3331		goto set_speed;
3332	}
3333
3334	if (np->autoneg == 0) {
3335		if (np->fixed_mode & LPA_100FULL) {
3336			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3337			newdup = 1;
3338		} else if (np->fixed_mode & LPA_100HALF) {
3339			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3340			newdup = 0;
3341		} else if (np->fixed_mode & LPA_10FULL) {
3342			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3343			newdup = 1;
3344		} else {
3345			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3346			newdup = 0;
3347		}
3348		retval = 1;
3349		goto set_speed;
3350	}
3351	/* check auto negotiation is complete */
3352	if (!(mii_status & BMSR_ANEGCOMPLETE)) {
3353		/* still in autonegotiation - configure nic for 10 MBit HD and wait. */
3354		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3355		newdup = 0;
3356		retval = 0;
3357		goto set_speed;
3358	}
3359
3360	adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
3361	lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
3362
3363	retval = 1;
3364	if (np->gigabit == PHY_GIGABIT) {
3365		control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
3366		status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
3367
3368		if ((control_1000 & ADVERTISE_1000FULL) &&
3369			(status_1000 & LPA_1000FULL)) {
3370			newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
3371			newdup = 1;
3372			goto set_speed;
3373		}
3374	}
3375
3376	/* FIXME: handle parallel detection properly */
3377	adv_lpa = lpa & adv;
3378	if (adv_lpa & LPA_100FULL) {
3379		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3380		newdup = 1;
3381	} else if (adv_lpa & LPA_100HALF) {
3382		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
3383		newdup = 0;
3384	} else if (adv_lpa & LPA_10FULL) {
3385		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3386		newdup = 1;
3387	} else if (adv_lpa & LPA_10HALF) {
3388		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3389		newdup = 0;
3390	} else {
3391		newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
3392		newdup = 0;
3393	}
3394
3395set_speed:
3396	if (np->duplex == newdup && np->linkspeed == newls)
3397		return retval;
3398
3399	np->duplex = newdup;
3400	np->linkspeed = newls;
3401
3402	/* The transmitter and receiver must be restarted for safe update */
3403	if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
3404		txrxFlags |= NV_RESTART_TX;
3405		nv_stop_tx(dev);
3406	}
3407	if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
3408		txrxFlags |= NV_RESTART_RX;
3409		nv_stop_rx(dev);
3410	}
3411
3412	if (np->gigabit == PHY_GIGABIT) {
3413		phyreg = readl(base + NvRegSlotTime);
3414		phyreg &= ~(0x3FF00);
3415		if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
3416		    ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
3417			phyreg |= NVREG_SLOTTIME_10_100_FULL;
3418		else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
3419			phyreg |= NVREG_SLOTTIME_1000_FULL;
3420		writel(phyreg, base + NvRegSlotTime);
3421	}
3422
3423	phyreg = readl(base + NvRegPhyInterface);
3424	phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
3425	if (np->duplex == 0)
3426		phyreg |= PHY_HALF;
3427	if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
3428		phyreg |= PHY_100;
3429	else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3430		phyreg |= PHY_1000;
3431	writel(phyreg, base + NvRegPhyInterface);
3432
3433	phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
3434	if (phyreg & PHY_RGMII) {
3435		if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
3436			txreg = NVREG_TX_DEFERRAL_RGMII_1000;
3437		} else {
3438			if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
3439				if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
3440					txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
3441				else
3442					txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
3443			} else {
3444				txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
3445			}
3446		}
3447	} else {
3448		if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
3449			txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
3450		else
3451			txreg = NVREG_TX_DEFERRAL_DEFAULT;
3452	}
3453	writel(txreg, base + NvRegTxDeferral);
3454
3455	if (np->desc_ver == DESC_VER_1) {
3456		txreg = NVREG_TX_WM_DESC1_DEFAULT;
3457	} else {
3458		if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
3459			txreg = NVREG_TX_WM_DESC2_3_1000;
3460		else
3461			txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
3462	}
3463	writel(txreg, base + NvRegTxWatermark);
3464
3465	writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
3466		base + NvRegMisc1);
3467	pci_push(base);
3468	writel(np->linkspeed, base + NvRegLinkSpeed);
3469	pci_push(base);
3470
3471	pause_flags = 0;
3472	/* setup pause frame */
3473	if (netif_running(dev) && (np->duplex != 0)) {
3474		if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
3475			adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
3476			lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
3477
3478			switch (adv_pause) {
3479			case ADVERTISE_PAUSE_CAP:
3480				if (lpa_pause & LPA_PAUSE_CAP) {
3481					pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3482					if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3483						pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3484				}
3485				break;
3486			case ADVERTISE_PAUSE_ASYM:
3487				if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
3488					pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3489				break;
3490			case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
3491				if (lpa_pause & LPA_PAUSE_CAP) {
3492					pause_flags |=  NV_PAUSEFRAME_RX_ENABLE;
3493					if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
3494						pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
3495				}
3496				if (lpa_pause == LPA_PAUSE_ASYM)
3497					pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
3498				break;
3499			}
3500		} else {
3501			pause_flags = np->pause_flags;
3502		}
3503	}
3504	nv_update_pause(dev, pause_flags);
3505
3506	if (txrxFlags & NV_RESTART_TX)
3507		nv_start_tx(dev);
3508	if (txrxFlags & NV_RESTART_RX)
3509		nv_start_rx(dev);
3510
3511	return retval;
3512}
3513
3514static void nv_linkchange(struct net_device *dev)
3515{
3516	if (nv_update_linkspeed(dev)) {
3517		if (!netif_carrier_ok(dev)) {
3518			netif_carrier_on(dev);
3519			netdev_info(dev, "link up\n");
3520			nv_txrx_gate(dev, false);
3521			nv_start_rx(dev);
3522		}
3523	} else {
3524		if (netif_carrier_ok(dev)) {
3525			netif_carrier_off(dev);
3526			netdev_info(dev, "link down\n");
3527			nv_txrx_gate(dev, true);
3528			nv_stop_rx(dev);
3529		}
3530	}
3531}
3532
3533static void nv_link_irq(struct net_device *dev)
3534{
3535	u8 __iomem *base = get_hwbase(dev);
3536	u32 miistat;
3537
3538	miistat = readl(base + NvRegMIIStatus);
3539	writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
3540
3541	if (miistat & (NVREG_MIISTAT_LINKCHANGE))
3542		nv_linkchange(dev);
3543}
3544
3545static void nv_msi_workaround(struct fe_priv *np)
3546{
3547
3548	/* Need to toggle the msi irq mask within the ethernet device,
3549	 * otherwise, future interrupts will not be detected.
3550	 */
3551	if (np->msi_flags & NV_MSI_ENABLED) {
3552		u8 __iomem *base = np->base;
3553
3554		writel(0, base + NvRegMSIIrqMask);
3555		writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
3556	}
3557}
3558
3559static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
3560{
3561	struct fe_priv *np = netdev_priv(dev);
3562
3563	if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
3564		if (total_work > NV_DYNAMIC_THRESHOLD) {
3565			/* transition to poll based interrupts */
3566			np->quiet_count = 0;
3567			if (np->irqmask != NVREG_IRQMASK_CPU) {
3568				np->irqmask = NVREG_IRQMASK_CPU;
3569				return 1;
3570			}
3571		} else {
3572			if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
3573				np->quiet_count++;
3574			} else {
3575				/* reached a period of low activity, switch
3576				   to per tx/rx packet interrupts */
3577				if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
3578					np->irqmask = NVREG_IRQMASK_THROUGHPUT;
3579					return 1;
3580				}
3581			}
3582		}
3583	}
3584	return 0;
3585}
3586
3587static irqreturn_t nv_nic_irq(int foo, void *data)
3588{
3589	struct net_device *dev = (struct net_device *) data;
3590	struct fe_priv *np = netdev_priv(dev);
3591	u8 __iomem *base = get_hwbase(dev);
3592
3593	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3594		np->events = readl(base + NvRegIrqStatus);
3595		writel(np->events, base + NvRegIrqStatus);
3596	} else {
3597		np->events = readl(base + NvRegMSIXIrqStatus);
3598		writel(np->events, base + NvRegMSIXIrqStatus);
3599	}
3600	if (!(np->events & np->irqmask))
3601		return IRQ_NONE;
3602
3603	nv_msi_workaround(np);
3604
3605	if (napi_schedule_prep(&np->napi)) {
3606		/*
3607		 * Disable further irq's (msix not enabled with napi)
3608		 */
3609		writel(0, base + NvRegIrqMask);
3610		__napi_schedule(&np->napi);
3611	}
3612
3613	return IRQ_HANDLED;
3614}
3615
3616/* All _optimized functions are used to help increase performance
3617 * (reduce CPU and increase throughput). They use descripter version 3,
3618 * compiler directives, and reduce memory accesses.
3619 */
3620static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
3621{
3622	struct net_device *dev = (struct net_device *) data;
3623	struct fe_priv *np = netdev_priv(dev);
3624	u8 __iomem *base = get_hwbase(dev);
3625
3626	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3627		np->events = readl(base + NvRegIrqStatus);
3628		writel(np->events, base + NvRegIrqStatus);
3629	} else {
3630		np->events = readl(base + NvRegMSIXIrqStatus);
3631		writel(np->events, base + NvRegMSIXIrqStatus);
3632	}
3633	if (!(np->events & np->irqmask))
3634		return IRQ_NONE;
3635
3636	nv_msi_workaround(np);
3637
3638	if (napi_schedule_prep(&np->napi)) {
3639		/*
3640		 * Disable further irq's (msix not enabled with napi)
3641		 */
3642		writel(0, base + NvRegIrqMask);
3643		__napi_schedule(&np->napi);
3644	}
3645
3646	return IRQ_HANDLED;
3647}
3648
3649static irqreturn_t nv_nic_irq_tx(int foo, void *data)
3650{
3651	struct net_device *dev = (struct net_device *) data;
3652	struct fe_priv *np = netdev_priv(dev);
3653	u8 __iomem *base = get_hwbase(dev);
3654	u32 events;
3655	int i;
3656	unsigned long flags;
3657
3658	for (i = 0;; i++) {
3659		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
3660		writel(events, base + NvRegMSIXIrqStatus);
3661		netdev_dbg(dev, "tx irq events: %08x\n", events);
3662		if (!(events & np->irqmask))
3663			break;
3664
3665		spin_lock_irqsave(&np->lock, flags);
3666		nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3667		spin_unlock_irqrestore(&np->lock, flags);
3668
3669		if (unlikely(i > max_interrupt_work)) {
3670			spin_lock_irqsave(&np->lock, flags);
3671			/* disable interrupts on the nic */
3672			writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
3673			pci_push(base);
3674
3675			if (!np->in_shutdown) {
3676				np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
3677				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3678			}
3679			spin_unlock_irqrestore(&np->lock, flags);
3680			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3681				   __func__, i);
3682			break;
3683		}
3684
3685	}
3686
3687	return IRQ_RETVAL(i);
3688}
3689
3690static int nv_napi_poll(struct napi_struct *napi, int budget)
3691{
3692	struct fe_priv *np = container_of(napi, struct fe_priv, napi);
3693	struct net_device *dev = np->dev;
3694	u8 __iomem *base = get_hwbase(dev);
3695	unsigned long flags;
3696	int retcode;
3697	int rx_count, tx_work = 0, rx_work = 0;
3698
3699	do {
3700		if (!nv_optimized(np)) {
3701			spin_lock_irqsave(&np->lock, flags);
3702			tx_work += nv_tx_done(dev, np->tx_ring_size);
3703			spin_unlock_irqrestore(&np->lock, flags);
3704
3705			rx_count = nv_rx_process(dev, budget - rx_work);
3706			retcode = nv_alloc_rx(dev);
3707		} else {
3708			spin_lock_irqsave(&np->lock, flags);
3709			tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
3710			spin_unlock_irqrestore(&np->lock, flags);
3711
3712			rx_count = nv_rx_process_optimized(dev,
3713			    budget - rx_work);
3714			retcode = nv_alloc_rx_optimized(dev);
3715		}
3716	} while (retcode == 0 &&
3717		 rx_count > 0 && (rx_work += rx_count) < budget);
3718
3719	if (retcode) {
3720		spin_lock_irqsave(&np->lock, flags);
3721		if (!np->in_shutdown)
3722			mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3723		spin_unlock_irqrestore(&np->lock, flags);
3724	}
3725
3726	nv_change_interrupt_mode(dev, tx_work + rx_work);
3727
3728	if (unlikely(np->events & NVREG_IRQ_LINK)) {
3729		spin_lock_irqsave(&np->lock, flags);
3730		nv_link_irq(dev);
3731		spin_unlock_irqrestore(&np->lock, flags);
3732	}
3733	if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
3734		spin_lock_irqsave(&np->lock, flags);
3735		nv_linkchange(dev);
3736		spin_unlock_irqrestore(&np->lock, flags);
3737		np->link_timeout = jiffies + LINK_TIMEOUT;
3738	}
3739	if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
3740		spin_lock_irqsave(&np->lock, flags);
3741		if (!np->in_shutdown) {
3742			np->nic_poll_irq = np->irqmask;
3743			np->recover_error = 1;
3744			mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3745		}
3746		spin_unlock_irqrestore(&np->lock, flags);
3747		napi_complete(napi);
3748		return rx_work;
3749	}
3750
3751	if (rx_work < budget) {
3752		/* re-enable interrupts
3753		   (msix not enabled in napi) */
3754		napi_complete(napi);
3755
3756		writel(np->irqmask, base + NvRegIrqMask);
3757	}
3758	return rx_work;
3759}
3760
3761static irqreturn_t nv_nic_irq_rx(int foo, void *data)
3762{
3763	struct net_device *dev = (struct net_device *) data;
3764	struct fe_priv *np = netdev_priv(dev);
3765	u8 __iomem *base = get_hwbase(dev);
3766	u32 events;
3767	int i;
3768	unsigned long flags;
3769
3770	for (i = 0;; i++) {
3771		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
3772		writel(events, base + NvRegMSIXIrqStatus);
3773		netdev_dbg(dev, "rx irq events: %08x\n", events);
3774		if (!(events & np->irqmask))
3775			break;
3776
3777		if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
3778			if (unlikely(nv_alloc_rx_optimized(dev))) {
3779				spin_lock_irqsave(&np->lock, flags);
3780				if (!np->in_shutdown)
3781					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
3782				spin_unlock_irqrestore(&np->lock, flags);
3783			}
3784		}
3785
3786		if (unlikely(i > max_interrupt_work)) {
3787			spin_lock_irqsave(&np->lock, flags);
3788			/* disable interrupts on the nic */
3789			writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
3790			pci_push(base);
3791
3792			if (!np->in_shutdown) {
3793				np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
3794				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3795			}
3796			spin_unlock_irqrestore(&np->lock, flags);
3797			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3798				   __func__, i);
3799			break;
3800		}
3801	}
3802
3803	return IRQ_RETVAL(i);
3804}
3805
3806static irqreturn_t nv_nic_irq_other(int foo, void *data)
3807{
3808	struct net_device *dev = (struct net_device *) data;
3809	struct fe_priv *np = netdev_priv(dev);
3810	u8 __iomem *base = get_hwbase(dev);
3811	u32 events;
3812	int i;
3813	unsigned long flags;
3814
3815	for (i = 0;; i++) {
3816		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
3817		writel(events, base + NvRegMSIXIrqStatus);
3818		netdev_dbg(dev, "irq events: %08x\n", events);
3819		if (!(events & np->irqmask))
3820			break;
3821
3822		/* check tx in case we reached max loop limit in tx isr */
3823		spin_lock_irqsave(&np->lock, flags);
3824		nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
3825		spin_unlock_irqrestore(&np->lock, flags);
3826
3827		if (events & NVREG_IRQ_LINK) {
3828			spin_lock_irqsave(&np->lock, flags);
3829			nv_link_irq(dev);
3830			spin_unlock_irqrestore(&np->lock, flags);
3831		}
3832		if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
3833			spin_lock_irqsave(&np->lock, flags);
3834			nv_linkchange(dev);
3835			spin_unlock_irqrestore(&np->lock, flags);
3836			np->link_timeout = jiffies + LINK_TIMEOUT;
3837		}
3838		if (events & NVREG_IRQ_RECOVER_ERROR) {
3839			spin_lock_irqsave(&np->lock, flags);
3840			/* disable interrupts on the nic */
3841			writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3842			pci_push(base);
3843
3844			if (!np->in_shutdown) {
3845				np->nic_poll_irq |= NVREG_IRQ_OTHER;
3846				np->recover_error = 1;
3847				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3848			}
3849			spin_unlock_irqrestore(&np->lock, flags);
3850			break;
3851		}
3852		if (unlikely(i > max_interrupt_work)) {
3853			spin_lock_irqsave(&np->lock, flags);
3854			/* disable interrupts on the nic */
3855			writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
3856			pci_push(base);
3857
3858			if (!np->in_shutdown) {
3859				np->nic_poll_irq |= NVREG_IRQ_OTHER;
3860				mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
3861			}
3862			spin_unlock_irqrestore(&np->lock, flags);
3863			netdev_dbg(dev, "%s: too many iterations (%d)\n",
3864				   __func__, i);
3865			break;
3866		}
3867
3868	}
3869
3870	return IRQ_RETVAL(i);
3871}
3872
3873static irqreturn_t nv_nic_irq_test(int foo, void *data)
3874{
3875	struct net_device *dev = (struct net_device *) data;
3876	struct fe_priv *np = netdev_priv(dev);
3877	u8 __iomem *base = get_hwbase(dev);
3878	u32 events;
3879
3880	if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
3881		events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
3882		writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
3883	} else {
3884		events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
3885		writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
3886	}
3887	pci_push(base);
3888	if (!(events & NVREG_IRQ_TIMER))
3889		return IRQ_RETVAL(0);
3890
3891	nv_msi_workaround(np);
3892
3893	spin_lock(&np->lock);
3894	np->intr_test = 1;
3895	spin_unlock(&np->lock);
3896
3897	return IRQ_RETVAL(1);
3898}
3899
3900static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
3901{
3902	u8 __iomem *base = get_hwbase(dev);
3903	int i;
3904	u32 msixmap = 0;
3905
3906	/* Each interrupt bit can be mapped to a MSIX vector (4 bits).
3907	 * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
3908	 * the remaining 8 interrupts.
3909	 */
3910	for (i = 0; i < 8; i++) {
3911		if ((irqmask >> i) & 0x1)
3912			msixmap |= vector << (i << 2);
3913	}
3914	writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
3915
3916	msixmap = 0;
3917	for (i = 0; i < 8; i++) {
3918		if ((irqmask >> (i + 8)) & 0x1)
3919			msixmap |= vector << (i << 2);
3920	}
3921	writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
3922}
3923
3924static int nv_request_irq(struct net_device *dev, int intr_test)
3925{
3926	struct fe_priv *np = get_nvpriv(dev);
3927	u8 __iomem *base = get_hwbase(dev);
3928	int ret;
3929	int i;
3930	irqreturn_t (*handler)(int foo, void *data);
3931
3932	if (intr_test) {
3933		handler = nv_nic_irq_test;
3934	} else {
3935		if (nv_optimized(np))
3936			handler = nv_nic_irq_optimized;
3937		else
3938			handler = nv_nic_irq;
3939	}
3940
3941	if (np->msi_flags & NV_MSI_X_CAPABLE) {
3942		for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
3943			np->msi_x_entry[i].entry = i;
3944		ret = pci_enable_msix_range(np->pci_dev,
3945					    np->msi_x_entry,
3946					    np->msi_flags & NV_MSI_X_VECTORS_MASK,
3947					    np->msi_flags & NV_MSI_X_VECTORS_MASK);
3948		if (ret > 0) {
3949			np->msi_flags |= NV_MSI_X_ENABLED;
3950			if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
3951				/* Request irq for rx handling */
3952				sprintf(np->name_rx, "%s-rx", dev->name);
3953				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
3954						  nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev);
3955				if (ret) {
3956					netdev_info(dev,
3957						    "request_irq failed for rx %d\n",
3958						    ret);
3959					pci_disable_msix(np->pci_dev);
3960					np->msi_flags &= ~NV_MSI_X_ENABLED;
3961					goto out_err;
3962				}
3963				/* Request irq for tx handling */
3964				sprintf(np->name_tx, "%s-tx", dev->name);
3965				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
3966						  nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev);
3967				if (ret) {
3968					netdev_info(dev,
3969						    "request_irq failed for tx %d\n",
3970						    ret);
3971					pci_disable_msix(np->pci_dev);
3972					np->msi_flags &= ~NV_MSI_X_ENABLED;
3973					goto out_free_rx;
3974				}
3975				/* Request irq for link and timer handling */
3976				sprintf(np->name_other, "%s-other", dev->name);
3977				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
3978						  nv_nic_irq_other, IRQF_SHARED, np->name_other, dev);
3979				if (ret) {
3980					netdev_info(dev,
3981						    "request_irq failed for link %d\n",
3982						    ret);
3983					pci_disable_msix(np->pci_dev);
3984					np->msi_flags &= ~NV_MSI_X_ENABLED;
3985					goto out_free_tx;
3986				}
3987				/* map interrupts to their respective vector */
3988				writel(0, base + NvRegMSIXMap0);
3989				writel(0, base + NvRegMSIXMap1);
3990				set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
3991				set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
3992				set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
3993			} else {
3994				/* Request irq for all interrupts */
3995				ret = request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector,
3996						  handler, IRQF_SHARED, dev->name, dev);
3997				if (ret) {
3998					netdev_info(dev,
3999						    "request_irq failed %d\n",
4000						    ret);
4001					pci_disable_msix(np->pci_dev);
4002					np->msi_flags &= ~NV_MSI_X_ENABLED;
4003					goto out_err;
4004				}
4005
4006				/* map interrupts to vector 0 */
4007				writel(0, base + NvRegMSIXMap0);
4008				writel(0, base + NvRegMSIXMap1);
4009			}
4010			netdev_info(dev, "MSI-X enabled\n");
4011			return 0;
4012		}
4013	}
4014	if (np->msi_flags & NV_MSI_CAPABLE) {
4015		ret = pci_enable_msi(np->pci_dev);
4016		if (ret == 0) {
4017			np->msi_flags |= NV_MSI_ENABLED;
4018			ret = request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev);
4019			if (ret) {
4020				netdev_info(dev, "request_irq failed %d\n",
4021					    ret);
4022				pci_disable_msi(np->pci_dev);
4023				np->msi_flags &= ~NV_MSI_ENABLED;
4024				goto out_err;
4025			}
4026
4027			/* map interrupts to vector 0 */
4028			writel(0, base + NvRegMSIMap0);
4029			writel(0, base + NvRegMSIMap1);
4030			/* enable msi vector 0 */
4031			writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
4032			netdev_info(dev, "MSI enabled\n");
4033			return 0;
4034		}
4035	}
4036
4037	if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
4038		goto out_err;
4039
4040	return 0;
4041out_free_tx:
4042	free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
4043out_free_rx:
4044	free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
4045out_err:
4046	return 1;
4047}
4048
4049static void nv_free_irq(struct net_device *dev)
4050{
4051	struct fe_priv *np = get_nvpriv(dev);
4052	int i;
4053
4054	if (np->msi_flags & NV_MSI_X_ENABLED) {
4055		for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
4056			free_irq(np->msi_x_entry[i].vector, dev);
4057		pci_disable_msix(np->pci_dev);
4058		np->msi_flags &= ~NV_MSI_X_ENABLED;
4059	} else {
4060		free_irq(np->pci_dev->irq, dev);
4061		if (np->msi_flags & NV_MSI_ENABLED) {
4062			pci_disable_msi(np->pci_dev);
4063			np->msi_flags &= ~NV_MSI_ENABLED;
4064		}
4065	}
4066}
4067
4068static void nv_do_nic_poll(unsigned long data)
4069{
4070	struct net_device *dev = (struct net_device *) data;
4071	struct fe_priv *np = netdev_priv(dev);
4072	u8 __iomem *base = get_hwbase(dev);
4073	u32 mask = 0;
4074	unsigned long flags;
4075	unsigned int irq = 0;
4076
4077	/*
4078	 * First disable irq(s) and then
4079	 * reenable interrupts on the nic, we have to do this before calling
4080	 * nv_nic_irq because that may decide to do otherwise
4081	 */
4082
4083	if (!using_multi_irqs(dev)) {
4084		if (np->msi_flags & NV_MSI_X_ENABLED)
4085			irq = np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector;
4086		else
4087			irq = np->pci_dev->irq;
4088		mask = np->irqmask;
4089	} else {
4090		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4091			irq = np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector;
4092			mask |= NVREG_IRQ_RX_ALL;
4093		}
4094		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4095			irq = np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector;
4096			mask |= NVREG_IRQ_TX_ALL;
4097		}
4098		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4099			irq = np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector;
4100			mask |= NVREG_IRQ_OTHER;
4101		}
4102	}
4103
4104	disable_irq_nosync_lockdep_irqsave(irq, &flags);
4105	synchronize_irq(irq);
4106
4107	if (np->recover_error) {
4108		np->recover_error = 0;
4109		netdev_info(dev, "MAC in recoverable error state\n");
4110		if (netif_running(dev)) {
4111			netif_tx_lock_bh(dev);
4112			netif_addr_lock(dev);
4113			spin_lock(&np->lock);
4114			/* stop engines */
4115			nv_stop_rxtx(dev);
4116			if (np->driver_data & DEV_HAS_POWER_CNTRL)
4117				nv_mac_reset(dev);
4118			nv_txrx_reset(dev);
4119			/* drain rx queue */
4120			nv_drain_rxtx(dev);
4121			/* reinit driver view of the rx queue */
4122			set_bufsize(dev);
4123			if (nv_init_ring(dev)) {
4124				if (!np->in_shutdown)
4125					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4126			}
4127			/* reinit nic view of the rx queue */
4128			writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4129			setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4130			writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4131				base + NvRegRingSizes);
4132			pci_push(base);
4133			writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4134			pci_push(base);
4135			/* clear interrupts */
4136			if (!(np->msi_flags & NV_MSI_X_ENABLED))
4137				writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
4138			else
4139				writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
4140
4141			/* restart rx engine */
4142			nv_start_rxtx(dev);
4143			spin_unlock(&np->lock);
4144			netif_addr_unlock(dev);
4145			netif_tx_unlock_bh(dev);
4146		}
4147	}
4148
4149	writel(mask, base + NvRegIrqMask);
4150	pci_push(base);
4151
4152	if (!using_multi_irqs(dev)) {
4153		np->nic_poll_irq = 0;
4154		if (nv_optimized(np))
4155			nv_nic_irq_optimized(0, dev);
4156		else
4157			nv_nic_irq(0, dev);
4158	} else {
4159		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
4160			np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
4161			nv_nic_irq_rx(0, dev);
4162		}
4163		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
4164			np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
4165			nv_nic_irq_tx(0, dev);
4166		}
4167		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
4168			np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
4169			nv_nic_irq_other(0, dev);
4170		}
4171	}
4172
4173	enable_irq_lockdep_irqrestore(irq, &flags);
4174}
4175
4176#ifdef CONFIG_NET_POLL_CONTROLLER
4177static void nv_poll_controller(struct net_device *dev)
4178{
4179	nv_do_nic_poll((unsigned long) dev);
4180}
4181#endif
4182
4183static void nv_do_stats_poll(unsigned long data)
4184	__acquires(&netdev_priv(dev)->hwstats_lock)
4185	__releases(&netdev_priv(dev)->hwstats_lock)
4186{
4187	struct net_device *dev = (struct net_device *) data;
4188	struct fe_priv *np = netdev_priv(dev);
4189
4190	/* If lock is currently taken, the stats are being refreshed
4191	 * and hence fresh enough */
4192	if (spin_trylock(&np->hwstats_lock)) {
4193		nv_update_stats(dev);
4194		spin_unlock(&np->hwstats_lock);
4195	}
4196
4197	if (!np->in_shutdown)
4198		mod_timer(&np->stats_poll,
4199			round_jiffies(jiffies + STATS_INTERVAL));
4200}
4201
4202static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
4203{
4204	struct fe_priv *np = netdev_priv(dev);
4205	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
4206	strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
4207	strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
4208}
4209
4210static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4211{
4212	struct fe_priv *np = netdev_priv(dev);
4213	wolinfo->supported = WAKE_MAGIC;
4214
4215	spin_lock_irq(&np->lock);
4216	if (np->wolenabled)
4217		wolinfo->wolopts = WAKE_MAGIC;
4218	spin_unlock_irq(&np->lock);
4219}
4220
4221static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
4222{
4223	struct fe_priv *np = netdev_priv(dev);
4224	u8 __iomem *base = get_hwbase(dev);
4225	u32 flags = 0;
4226
4227	if (wolinfo->wolopts == 0) {
4228		np->wolenabled = 0;
4229	} else if (wolinfo->wolopts & WAKE_MAGIC) {
4230		np->wolenabled = 1;
4231		flags = NVREG_WAKEUPFLAGS_ENABLE;
4232	}
4233	if (netif_running(dev)) {
4234		spin_lock_irq(&np->lock);
4235		writel(flags, base + NvRegWakeUpFlags);
4236		spin_unlock_irq(&np->lock);
4237	}
4238	device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
4239	return 0;
4240}
4241
4242static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4243{
4244	struct fe_priv *np = netdev_priv(dev);
4245	u32 speed;
4246	int adv;
4247
4248	spin_lock_irq(&np->lock);
4249	ecmd->port = PORT_MII;
4250	if (!netif_running(dev)) {
4251		/* We do not track link speed / duplex setting if the
4252		 * interface is disabled. Force a link check */
4253		if (nv_update_linkspeed(dev)) {
4254			if (!netif_carrier_ok(dev))
4255				netif_carrier_on(dev);
4256		} else {
4257			if (netif_carrier_ok(dev))
4258				netif_carrier_off(dev);
4259		}
4260	}
4261
4262	if (netif_carrier_ok(dev)) {
4263		switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
4264		case NVREG_LINKSPEED_10:
4265			speed = SPEED_10;
4266			break;
4267		case NVREG_LINKSPEED_100:
4268			speed = SPEED_100;
4269			break;
4270		case NVREG_LINKSPEED_1000:
4271			speed = SPEED_1000;
4272			break;
4273		default:
4274			speed = -1;
4275			break;
4276		}
4277		ecmd->duplex = DUPLEX_HALF;
4278		if (np->duplex)
4279			ecmd->duplex = DUPLEX_FULL;
4280	} else {
4281		speed = SPEED_UNKNOWN;
4282		ecmd->duplex = DUPLEX_UNKNOWN;
4283	}
4284	ethtool_cmd_speed_set(ecmd, speed);
4285	ecmd->autoneg = np->autoneg;
4286
4287	ecmd->advertising = ADVERTISED_MII;
4288	if (np->autoneg) {
4289		ecmd->advertising |= ADVERTISED_Autoneg;
4290		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4291		if (adv & ADVERTISE_10HALF)
4292			ecmd->advertising |= ADVERTISED_10baseT_Half;
4293		if (adv & ADVERTISE_10FULL)
4294			ecmd->advertising |= ADVERTISED_10baseT_Full;
4295		if (adv & ADVERTISE_100HALF)
4296			ecmd->advertising |= ADVERTISED_100baseT_Half;
4297		if (adv & ADVERTISE_100FULL)
4298			ecmd->advertising |= ADVERTISED_100baseT_Full;
4299		if (np->gigabit == PHY_GIGABIT) {
4300			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4301			if (adv & ADVERTISE_1000FULL)
4302				ecmd->advertising |= ADVERTISED_1000baseT_Full;
4303		}
4304	}
4305	ecmd->supported = (SUPPORTED_Autoneg |
4306		SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
4307		SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
4308		SUPPORTED_MII);
4309	if (np->gigabit == PHY_GIGABIT)
4310		ecmd->supported |= SUPPORTED_1000baseT_Full;
4311
4312	ecmd->phy_address = np->phyaddr;
4313	ecmd->transceiver = XCVR_EXTERNAL;
4314
4315	/* ignore maxtxpkt, maxrxpkt for now */
4316	spin_unlock_irq(&np->lock);
4317	return 0;
4318}
4319
4320static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
4321{
4322	struct fe_priv *np = netdev_priv(dev);
4323	u32 speed = ethtool_cmd_speed(ecmd);
4324
4325	if (ecmd->port != PORT_MII)
4326		return -EINVAL;
4327	if (ecmd->transceiver != XCVR_EXTERNAL)
4328		return -EINVAL;
4329	if (ecmd->phy_address != np->phyaddr) {
4330		/* TODO: support switching between multiple phys. Should be
4331		 * trivial, but not enabled due to lack of test hardware. */
4332		return -EINVAL;
4333	}
4334	if (ecmd->autoneg == AUTONEG_ENABLE) {
4335		u32 mask;
4336
4337		mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
4338			  ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
4339		if (np->gigabit == PHY_GIGABIT)
4340			mask |= ADVERTISED_1000baseT_Full;
4341
4342		if ((ecmd->advertising & mask) == 0)
4343			return -EINVAL;
4344
4345	} else if (ecmd->autoneg == AUTONEG_DISABLE) {
4346		/* Note: autonegotiation disable, speed 1000 intentionally
4347		 * forbidden - no one should need that. */
4348
4349		if (speed != SPEED_10 && speed != SPEED_100)
4350			return -EINVAL;
4351		if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
4352			return -EINVAL;
4353	} else {
4354		return -EINVAL;
4355	}
4356
4357	netif_carrier_off(dev);
4358	if (netif_running(dev)) {
4359		unsigned long flags;
4360
4361		nv_disable_irq(dev);
4362		netif_tx_lock_bh(dev);
4363		netif_addr_lock(dev);
4364		/* with plain spinlock lockdep complains */
4365		spin_lock_irqsave(&np->lock, flags);
4366		/* stop engines */
4367		/* FIXME:
4368		 * this can take some time, and interrupts are disabled
4369		 * due to spin_lock_irqsave, but let's hope no daemon
4370		 * is going to change the settings very often...
4371		 * Worst case:
4372		 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
4373		 * + some minor delays, which is up to a second approximately
4374		 */
4375		nv_stop_rxtx(dev);
4376		spin_unlock_irqrestore(&np->lock, flags);
4377		netif_addr_unlock(dev);
4378		netif_tx_unlock_bh(dev);
4379	}
4380
4381	if (ecmd->autoneg == AUTONEG_ENABLE) {
4382		int adv, bmcr;
4383
4384		np->autoneg = 1;
4385
4386		/* advertise only what has been requested */
4387		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4388		adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4389		if (ecmd->advertising & ADVERTISED_10baseT_Half)
4390			adv |= ADVERTISE_10HALF;
4391		if (ecmd->advertising & ADVERTISED_10baseT_Full)
4392			adv |= ADVERTISE_10FULL;
4393		if (ecmd->advertising & ADVERTISED_100baseT_Half)
4394			adv |= ADVERTISE_100HALF;
4395		if (ecmd->advertising & ADVERTISED_100baseT_Full)
4396			adv |= ADVERTISE_100FULL;
4397		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ)  /* for rx we set both advertisements but disable tx pause */
4398			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4399		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4400			adv |=  ADVERTISE_PAUSE_ASYM;
4401		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4402
4403		if (np->gigabit == PHY_GIGABIT) {
4404			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4405			adv &= ~ADVERTISE_1000FULL;
4406			if (ecmd->advertising & ADVERTISED_1000baseT_Full)
4407				adv |= ADVERTISE_1000FULL;
4408			mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4409		}
4410
4411		if (netif_running(dev))
4412			netdev_info(dev, "link down\n");
4413		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4414		if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4415			bmcr |= BMCR_ANENABLE;
4416			/* reset the phy in order for settings to stick,
4417			 * and cause autoneg to start */
4418			if (phy_reset(dev, bmcr)) {
4419				netdev_info(dev, "phy reset failed\n");
4420				return -EINVAL;
4421			}
4422		} else {
4423			bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4424			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4425		}
4426	} else {
4427		int adv, bmcr;
4428
4429		np->autoneg = 0;
4430
4431		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4432		adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4433		if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
4434			adv |= ADVERTISE_10HALF;
4435		if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
4436			adv |= ADVERTISE_10FULL;
4437		if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
4438			adv |= ADVERTISE_100HALF;
4439		if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
4440			adv |= ADVERTISE_100FULL;
4441		np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4442		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
4443			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4444			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4445		}
4446		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
4447			adv |=  ADVERTISE_PAUSE_ASYM;
4448			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4449		}
4450		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4451		np->fixed_mode = adv;
4452
4453		if (np->gigabit == PHY_GIGABIT) {
4454			adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
4455			adv &= ~ADVERTISE_1000FULL;
4456			mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
4457		}
4458
4459		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4460		bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
4461		if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
4462			bmcr |= BMCR_FULLDPLX;
4463		if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
4464			bmcr |= BMCR_SPEED100;
4465		if (np->phy_oui == PHY_OUI_MARVELL) {
4466			/* reset the phy in order for forced mode settings to stick */
4467			if (phy_reset(dev, bmcr)) {
4468				netdev_info(dev, "phy reset failed\n");
4469				return -EINVAL;
4470			}
4471		} else {
4472			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4473			if (netif_running(dev)) {
4474				/* Wait a bit and then reconfigure the nic. */
4475				udelay(10);
4476				nv_linkchange(dev);
4477			}
4478		}
4479	}
4480
4481	if (netif_running(dev)) {
4482		nv_start_rxtx(dev);
4483		nv_enable_irq(dev);
4484	}
4485
4486	return 0;
4487}
4488
4489#define FORCEDETH_REGS_VER	1
4490
4491static int nv_get_regs_len(struct net_device *dev)
4492{
4493	struct fe_priv *np = netdev_priv(dev);
4494	return np->register_size;
4495}
4496
4497static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
4498{
4499	struct fe_priv *np = netdev_priv(dev);
4500	u8 __iomem *base = get_hwbase(dev);
4501	u32 *rbuf = buf;
4502	int i;
4503
4504	regs->version = FORCEDETH_REGS_VER;
4505	spin_lock_irq(&np->lock);
4506	for (i = 0; i < np->register_size/sizeof(u32); i++)
4507		rbuf[i] = readl(base + i*sizeof(u32));
4508	spin_unlock_irq(&np->lock);
4509}
4510
4511static int nv_nway_reset(struct net_device *dev)
4512{
4513	struct fe_priv *np = netdev_priv(dev);
4514	int ret;
4515
4516	if (np->autoneg) {
4517		int bmcr;
4518
4519		netif_carrier_off(dev);
4520		if (netif_running(dev)) {
4521			nv_disable_irq(dev);
4522			netif_tx_lock_bh(dev);
4523			netif_addr_lock(dev);
4524			spin_lock(&np->lock);
4525			/* stop engines */
4526			nv_stop_rxtx(dev);
4527			spin_unlock(&np->lock);
4528			netif_addr_unlock(dev);
4529			netif_tx_unlock_bh(dev);
4530			netdev_info(dev, "link down\n");
4531		}
4532
4533		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4534		if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
4535			bmcr |= BMCR_ANENABLE;
4536			/* reset the phy in order for settings to stick*/
4537			if (phy_reset(dev, bmcr)) {
4538				netdev_info(dev, "phy reset failed\n");
4539				return -EINVAL;
4540			}
4541		} else {
4542			bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4543			mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4544		}
4545
4546		if (netif_running(dev)) {
4547			nv_start_rxtx(dev);
4548			nv_enable_irq(dev);
4549		}
4550		ret = 0;
4551	} else {
4552		ret = -EINVAL;
4553	}
4554
4555	return ret;
4556}
4557
4558static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4559{
4560	struct fe_priv *np = netdev_priv(dev);
4561
4562	ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4563	ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
4564
4565	ring->rx_pending = np->rx_ring_size;
4566	ring->tx_pending = np->tx_ring_size;
4567}
4568
4569static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
4570{
4571	struct fe_priv *np = netdev_priv(dev);
4572	u8 __iomem *base = get_hwbase(dev);
4573	u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
4574	dma_addr_t ring_addr;
4575
4576	if (ring->rx_pending < RX_RING_MIN ||
4577	    ring->tx_pending < TX_RING_MIN ||
4578	    ring->rx_mini_pending != 0 ||
4579	    ring->rx_jumbo_pending != 0 ||
4580	    (np->desc_ver == DESC_VER_1 &&
4581	     (ring->rx_pending > RING_MAX_DESC_VER_1 ||
4582	      ring->tx_pending > RING_MAX_DESC_VER_1)) ||
4583	    (np->desc_ver != DESC_VER_1 &&
4584	     (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
4585	      ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
4586		return -EINVAL;
4587	}
4588
4589	/* allocate new rings */
4590	if (!nv_optimized(np)) {
4591		rxtx_ring = pci_alloc_consistent(np->pci_dev,
4592					    sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4593					    &ring_addr);
4594	} else {
4595		rxtx_ring = pci_alloc_consistent(np->pci_dev,
4596					    sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4597					    &ring_addr);
4598	}
4599	rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
4600	tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
4601	if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
4602		/* fall back to old rings */
4603		if (!nv_optimized(np)) {
4604			if (rxtx_ring)
4605				pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
4606						    rxtx_ring, ring_addr);
4607		} else {
4608			if (rxtx_ring)
4609				pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
4610						    rxtx_ring, ring_addr);
4611		}
4612
4613		kfree(rx_skbuff);
4614		kfree(tx_skbuff);
4615		goto exit;
4616	}
4617
4618	if (netif_running(dev)) {
4619		nv_disable_irq(dev);
4620		nv_napi_disable(dev);
4621		netif_tx_lock_bh(dev);
4622		netif_addr_lock(dev);
4623		spin_lock(&np->lock);
4624		/* stop engines */
4625		nv_stop_rxtx(dev);
4626		nv_txrx_reset(dev);
4627		/* drain queues */
4628		nv_drain_rxtx(dev);
4629		/* delete queues */
4630		free_rings(dev);
4631	}
4632
4633	/* set new values */
4634	np->rx_ring_size = ring->rx_pending;
4635	np->tx_ring_size = ring->tx_pending;
4636
4637	if (!nv_optimized(np)) {
4638		np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
4639		np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
4640	} else {
4641		np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
4642		np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
4643	}
4644	np->rx_skb = (struct nv_skb_map *)rx_skbuff;
4645	np->tx_skb = (struct nv_skb_map *)tx_skbuff;
4646	np->ring_addr = ring_addr;
4647
4648	memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
4649	memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
4650
4651	if (netif_running(dev)) {
4652		/* reinit driver view of the queues */
4653		set_bufsize(dev);
4654		if (nv_init_ring(dev)) {
4655			if (!np->in_shutdown)
4656				mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
4657		}
4658
4659		/* reinit nic view of the queues */
4660		writel(np->rx_buf_sz, base + NvRegOffloadConfig);
4661		setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
4662		writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
4663			base + NvRegRingSizes);
4664		pci_push(base);
4665		writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4666		pci_push(base);
4667
4668		/* restart engines */
4669		nv_start_rxtx(dev);
4670		spin_unlock(&np->lock);
4671		netif_addr_unlock(dev);
4672		netif_tx_unlock_bh(dev);
4673		nv_napi_enable(dev);
4674		nv_enable_irq(dev);
4675	}
4676	return 0;
4677exit:
4678	return -ENOMEM;
4679}
4680
4681static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4682{
4683	struct fe_priv *np = netdev_priv(dev);
4684
4685	pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
4686	pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
4687	pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
4688}
4689
4690static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
4691{
4692	struct fe_priv *np = netdev_priv(dev);
4693	int adv, bmcr;
4694
4695	if ((!np->autoneg && np->duplex == 0) ||
4696	    (np->autoneg && !pause->autoneg && np->duplex == 0)) {
4697		netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
4698		return -EINVAL;
4699	}
4700	if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
4701		netdev_info(dev, "hardware does not support tx pause frames\n");
4702		return -EINVAL;
4703	}
4704
4705	netif_carrier_off(dev);
4706	if (netif_running(dev)) {
4707		nv_disable_irq(dev);
4708		netif_tx_lock_bh(dev);
4709		netif_addr_lock(dev);
4710		spin_lock(&np->lock);
4711		/* stop engines */
4712		nv_stop_rxtx(dev);
4713		spin_unlock(&np->lock);
4714		netif_addr_unlock(dev);
4715		netif_tx_unlock_bh(dev);
4716	}
4717
4718	np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
4719	if (pause->rx_pause)
4720		np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
4721	if (pause->tx_pause)
4722		np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
4723
4724	if (np->autoneg && pause->autoneg) {
4725		np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
4726
4727		adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
4728		adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
4729		if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
4730			adv |=  ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
4731		if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
4732			adv |=  ADVERTISE_PAUSE_ASYM;
4733		mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
4734
4735		if (netif_running(dev))
4736			netdev_info(dev, "link down\n");
4737		bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4738		bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
4739		mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
4740	} else {
4741		np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
4742		if (pause->rx_pause)
4743			np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
4744		if (pause->tx_pause)
4745			np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
4746
4747		if (!netif_running(dev))
4748			nv_update_linkspeed(dev);
4749		else
4750			nv_update_pause(dev, np->pause_flags);
4751	}
4752
4753	if (netif_running(dev)) {
4754		nv_start_rxtx(dev);
4755		nv_enable_irq(dev);
4756	}
4757	return 0;
4758}
4759
4760static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
4761{
4762	struct fe_priv *np = netdev_priv(dev);
4763	unsigned long flags;
4764	u32 miicontrol;
4765	int err, retval = 0;
4766
4767	spin_lock_irqsave(&np->lock, flags);
4768	miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
4769	if (features & NETIF_F_LOOPBACK) {
4770		if (miicontrol & BMCR_LOOPBACK) {
4771			spin_unlock_irqrestore(&np->lock, flags);
4772			netdev_info(dev, "Loopback already enabled\n");
4773			return 0;
4774		}
4775		nv_disable_irq(dev);
4776		/* Turn on loopback mode */
4777		miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
4778		err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
4779		if (err) {
4780			retval = PHY_ERROR;
4781			spin_unlock_irqrestore(&np->lock, flags);
4782			phy_init(dev);
4783		} else {
4784			if (netif_running(dev)) {
4785				/* Force 1000 Mbps full-duplex */
4786				nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
4787									 1);
4788				/* Force link up */
4789				netif_carrier_on(dev);
4790			}
4791			spin_unlock_irqrestore(&np->lock, flags);
4792			netdev_info(dev,
4793				"Internal PHY loopback mode enabled.\n");
4794		}
4795	} else {
4796		if (!(miicontrol & BMCR_LOOPBACK)) {
4797			spin_unlock_irqrestore(&np->lock, flags);
4798			netdev_info(dev, "Loopback already disabled\n");
4799			return 0;
4800		}
4801		nv_disable_irq(dev);
4802		/* Turn off loopback */
4803		spin_unlock_irqrestore(&np->lock, flags);
4804		netdev_info(dev, "Internal PHY loopback mode disabled.\n");
4805		phy_init(dev);
4806	}
4807	msleep(500);
4808	spin_lock_irqsave(&np->lock, flags);
4809	nv_enable_irq(dev);
4810	spin_unlock_irqrestore(&np->lock, flags);
4811
4812	return retval;
4813}
4814
4815static netdev_features_t nv_fix_features(struct net_device *dev,
4816	netdev_features_t features)
4817{
4818	/* vlan is dependent on rx checksum offload */
4819	if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4820		features |= NETIF_F_RXCSUM;
4821
4822	return features;
4823}
4824
4825static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
4826{
4827	struct fe_priv *np = get_nvpriv(dev);
4828
4829	spin_lock_irq(&np->lock);
4830
4831	if (features & NETIF_F_HW_VLAN_CTAG_RX)
4832		np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
4833	else
4834		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
4835
4836	if (features & NETIF_F_HW_VLAN_CTAG_TX)
4837		np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
4838	else
4839		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
4840
4841	writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
4842
4843	spin_unlock_irq(&np->lock);
4844}
4845
4846static int nv_set_features(struct net_device *dev, netdev_features_t features)
4847{
4848	struct fe_priv *np = netdev_priv(dev);
4849	u8 __iomem *base = get_hwbase(dev);
4850	netdev_features_t changed = dev->features ^ features;
4851	int retval;
4852
4853	if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
4854		retval = nv_set_loopback(dev, features);
4855		if (retval != 0)
4856			return retval;
4857	}
4858
4859	if (changed & NETIF_F_RXCSUM) {
4860		spin_lock_irq(&np->lock);
4861
4862		if (features & NETIF_F_RXCSUM)
4863			np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
4864		else
4865			np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
4866
4867		if (netif_running(dev))
4868			writel(np->txrxctl_bits, base + NvRegTxRxControl);
4869
4870		spin_unlock_irq(&np->lock);
4871	}
4872
4873	if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
4874		nv_vlan_mode(dev, features);
4875
4876	return 0;
4877}
4878
4879static int nv_get_sset_count(struct net_device *dev, int sset)
4880{
4881	struct fe_priv *np = netdev_priv(dev);
4882
4883	switch (sset) {
4884	case ETH_SS_TEST:
4885		if (np->driver_data & DEV_HAS_TEST_EXTENDED)
4886			return NV_TEST_COUNT_EXTENDED;
4887		else
4888			return NV_TEST_COUNT_BASE;
4889	case ETH_SS_STATS:
4890		if (np->driver_data & DEV_HAS_STATISTICS_V3)
4891			return NV_DEV_STATISTICS_V3_COUNT;
4892		else if (np->driver_data & DEV_HAS_STATISTICS_V2)
4893			return NV_DEV_STATISTICS_V2_COUNT;
4894		else if (np->driver_data & DEV_HAS_STATISTICS_V1)
4895			return NV_DEV_STATISTICS_V1_COUNT;
4896		else
4897			return 0;
4898	default:
4899		return -EOPNOTSUPP;
4900	}
4901}
4902
4903static void nv_get_ethtool_stats(struct net_device *dev,
4904				 struct ethtool_stats *estats, u64 *buffer)
4905	__acquires(&netdev_priv(dev)->hwstats_lock)
4906	__releases(&netdev_priv(dev)->hwstats_lock)
4907{
4908	struct fe_priv *np = netdev_priv(dev);
4909
4910	spin_lock_bh(&np->hwstats_lock);
4911	nv_update_stats(dev);
4912	memcpy(buffer, &np->estats,
4913	       nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
4914	spin_unlock_bh(&np->hwstats_lock);
4915}
4916
4917static int nv_link_test(struct net_device *dev)
4918{
4919	struct fe_priv *np = netdev_priv(dev);
4920	int mii_status;
4921
4922	mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4923	mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
4924
4925	/* check phy link status */
4926	if (!(mii_status & BMSR_LSTATUS))
4927		return 0;
4928	else
4929		return 1;
4930}
4931
4932static int nv_register_test(struct net_device *dev)
4933{
4934	u8 __iomem *base = get_hwbase(dev);
4935	int i = 0;
4936	u32 orig_read, new_read;
4937
4938	do {
4939		orig_read = readl(base + nv_registers_test[i].reg);
4940
4941		/* xor with mask to toggle bits */
4942		orig_read ^= nv_registers_test[i].mask;
4943
4944		writel(orig_read, base + nv_registers_test[i].reg);
4945
4946		new_read = readl(base + nv_registers_test[i].reg);
4947
4948		if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
4949			return 0;
4950
4951		/* restore original value */
4952		orig_read ^= nv_registers_test[i].mask;
4953		writel(orig_read, base + nv_registers_test[i].reg);
4954
4955	} while (nv_registers_test[++i].reg != 0);
4956
4957	return 1;
4958}
4959
4960static int nv_interrupt_test(struct net_device *dev)
4961{
4962	struct fe_priv *np = netdev_priv(dev);
4963	u8 __iomem *base = get_hwbase(dev);
4964	int ret = 1;
4965	int testcnt;
4966	u32 save_msi_flags, save_poll_interval = 0;
4967
4968	if (netif_running(dev)) {
4969		/* free current irq */
4970		nv_free_irq(dev);
4971		save_poll_interval = readl(base+NvRegPollingInterval);
4972	}
4973
4974	/* flag to test interrupt handler */
4975	np->intr_test = 0;
4976
4977	/* setup test irq */
4978	save_msi_flags = np->msi_flags;
4979	np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
4980	np->msi_flags |= 0x001; /* setup 1 vector */
4981	if (nv_request_irq(dev, 1))
4982		return 0;
4983
4984	/* setup timer interrupt */
4985	writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
4986	writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
4987
4988	nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
4989
4990	/* wait for at least one interrupt */
4991	msleep(100);
4992
4993	spin_lock_irq(&np->lock);
4994
4995	/* flag should be set within ISR */
4996	testcnt = np->intr_test;
4997	if (!testcnt)
4998		ret = 2;
4999
5000	nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
5001	if (!(np->msi_flags & NV_MSI_X_ENABLED))
5002		writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5003	else
5004		writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5005
5006	spin_unlock_irq(&np->lock);
5007
5008	nv_free_irq(dev);
5009
5010	np->msi_flags = save_msi_flags;
5011
5012	if (netif_running(dev)) {
5013		writel(save_poll_interval, base + NvRegPollingInterval);
5014		writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5015		/* restore original irq */
5016		if (nv_request_irq(dev, 0))
5017			return 0;
5018	}
5019
5020	return ret;
5021}
5022
5023static int nv_loopback_test(struct net_device *dev)
5024{
5025	struct fe_priv *np = netdev_priv(dev);
5026	u8 __iomem *base = get_hwbase(dev);
5027	struct sk_buff *tx_skb, *rx_skb;
5028	dma_addr_t test_dma_addr;
5029	u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
5030	u32 flags;
5031	int len, i, pkt_len;
5032	u8 *pkt_data;
5033	u32 filter_flags = 0;
5034	u32 misc1_flags = 0;
5035	int ret = 1;
5036
5037	if (netif_running(dev)) {
5038		nv_disable_irq(dev);
5039		filter_flags = readl(base + NvRegPacketFilterFlags);
5040		misc1_flags = readl(base + NvRegMisc1);
5041	} else {
5042		nv_txrx_reset(dev);
5043	}
5044
5045	/* reinit driver view of the rx queue */
5046	set_bufsize(dev);
5047	nv_init_ring(dev);
5048
5049	/* setup hardware for loopback */
5050	writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
5051	writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
5052
5053	/* reinit nic view of the rx queue */
5054	writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5055	setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5056	writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5057		base + NvRegRingSizes);
5058	pci_push(base);
5059
5060	/* restart rx engine */
5061	nv_start_rxtx(dev);
5062
5063	/* setup packet for tx */
5064	pkt_len = ETH_DATA_LEN;
5065	tx_skb = netdev_alloc_skb(dev, pkt_len);
5066	if (!tx_skb) {
5067		ret = 0;
5068		goto out;
5069	}
5070	test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
5071				       skb_tailroom(tx_skb),
5072				       PCI_DMA_FROMDEVICE);
5073	if (pci_dma_mapping_error(np->pci_dev,
5074				  test_dma_addr)) {
5075		dev_kfree_skb_any(tx_skb);
5076		goto out;
5077	}
5078	pkt_data = skb_put(tx_skb, pkt_len);
5079	for (i = 0; i < pkt_len; i++)
5080		pkt_data[i] = (u8)(i & 0xff);
5081
5082	if (!nv_optimized(np)) {
5083		np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
5084		np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5085	} else {
5086		np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
5087		np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
5088		np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
5089	}
5090	writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5091	pci_push(get_hwbase(dev));
5092
5093	msleep(500);
5094
5095	/* check for rx of the packet */
5096	if (!nv_optimized(np)) {
5097		flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
5098		len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
5099
5100	} else {
5101		flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
5102		len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
5103	}
5104
5105	if (flags & NV_RX_AVAIL) {
5106		ret = 0;
5107	} else if (np->desc_ver == DESC_VER_1) {
5108		if (flags & NV_RX_ERROR)
5109			ret = 0;
5110	} else {
5111		if (flags & NV_RX2_ERROR)
5112			ret = 0;
5113	}
5114
5115	if (ret) {
5116		if (len != pkt_len) {
5117			ret = 0;
5118		} else {
5119			rx_skb = np->rx_skb[0].skb;
5120			for (i = 0; i < pkt_len; i++) {
5121				if (rx_skb->data[i] != (u8)(i & 0xff)) {
5122					ret = 0;
5123					break;
5124				}
5125			}
5126		}
5127	}
5128
5129	pci_unmap_single(np->pci_dev, test_dma_addr,
5130		       (skb_end_pointer(tx_skb) - tx_skb->data),
5131		       PCI_DMA_TODEVICE);
5132	dev_kfree_skb_any(tx_skb);
5133 out:
5134	/* stop engines */
5135	nv_stop_rxtx(dev);
5136	nv_txrx_reset(dev);
5137	/* drain rx queue */
5138	nv_drain_rxtx(dev);
5139
5140	if (netif_running(dev)) {
5141		writel(misc1_flags, base + NvRegMisc1);
5142		writel(filter_flags, base + NvRegPacketFilterFlags);
5143		nv_enable_irq(dev);
5144	}
5145
5146	return ret;
5147}
5148
5149static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
5150{
5151	struct fe_priv *np = netdev_priv(dev);
5152	u8 __iomem *base = get_hwbase(dev);
5153	int result, count;
5154
5155	count = nv_get_sset_count(dev, ETH_SS_TEST);
5156	memset(buffer, 0, count * sizeof(u64));
5157
5158	if (!nv_link_test(dev)) {
5159		test->flags |= ETH_TEST_FL_FAILED;
5160		buffer[0] = 1;
5161	}
5162
5163	if (test->flags & ETH_TEST_FL_OFFLINE) {
5164		if (netif_running(dev)) {
5165			netif_stop_queue(dev);
5166			nv_napi_disable(dev);
5167			netif_tx_lock_bh(dev);
5168			netif_addr_lock(dev);
5169			spin_lock_irq(&np->lock);
5170			nv_disable_hw_interrupts(dev, np->irqmask);
5171			if (!(np->msi_flags & NV_MSI_X_ENABLED))
5172				writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5173			else
5174				writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
5175			/* stop engines */
5176			nv_stop_rxtx(dev);
5177			nv_txrx_reset(dev);
5178			/* drain rx queue */
5179			nv_drain_rxtx(dev);
5180			spin_unlock_irq(&np->lock);
5181			netif_addr_unlock(dev);
5182			netif_tx_unlock_bh(dev);
5183		}
5184
5185		if (!nv_register_test(dev)) {
5186			test->flags |= ETH_TEST_FL_FAILED;
5187			buffer[1] = 1;
5188		}
5189
5190		result = nv_interrupt_test(dev);
5191		if (result != 1) {
5192			test->flags |= ETH_TEST_FL_FAILED;
5193			buffer[2] = 1;
5194		}
5195		if (result == 0) {
5196			/* bail out */
5197			return;
5198		}
5199
5200		if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
5201			test->flags |= ETH_TEST_FL_FAILED;
5202			buffer[3] = 1;
5203		}
5204
5205		if (netif_running(dev)) {
5206			/* reinit driver view of the rx queue */
5207			set_bufsize(dev);
5208			if (nv_init_ring(dev)) {
5209				if (!np->in_shutdown)
5210					mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5211			}
5212			/* reinit nic view of the rx queue */
5213			writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5214			setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5215			writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5216				base + NvRegRingSizes);
5217			pci_push(base);
5218			writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
5219			pci_push(base);
5220			/* restart rx engine */
5221			nv_start_rxtx(dev);
5222			netif_start_queue(dev);
5223			nv_napi_enable(dev);
5224			nv_enable_hw_interrupts(dev, np->irqmask);
5225		}
5226	}
5227}
5228
5229static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
5230{
5231	switch (stringset) {
5232	case ETH_SS_STATS:
5233		memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
5234		break;
5235	case ETH_SS_TEST:
5236		memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
5237		break;
5238	}
5239}
5240
5241static const struct ethtool_ops ops = {
5242	.get_drvinfo = nv_get_drvinfo,
5243	.get_link = ethtool_op_get_link,
5244	.get_wol = nv_get_wol,
5245	.set_wol = nv_set_wol,
5246	.get_settings = nv_get_settings,
5247	.set_settings = nv_set_settings,
5248	.get_regs_len = nv_get_regs_len,
5249	.get_regs = nv_get_regs,
5250	.nway_reset = nv_nway_reset,
5251	.get_ringparam = nv_get_ringparam,
5252	.set_ringparam = nv_set_ringparam,
5253	.get_pauseparam = nv_get_pauseparam,
5254	.set_pauseparam = nv_set_pauseparam,
5255	.get_strings = nv_get_strings,
5256	.get_ethtool_stats = nv_get_ethtool_stats,
5257	.get_sset_count = nv_get_sset_count,
5258	.self_test = nv_self_test,
5259	.get_ts_info = ethtool_op_get_ts_info,
5260};
5261
5262/* The mgmt unit and driver use a semaphore to access the phy during init */
5263static int nv_mgmt_acquire_sema(struct net_device *dev)
5264{
5265	struct fe_priv *np = netdev_priv(dev);
5266	u8 __iomem *base = get_hwbase(dev);
5267	int i;
5268	u32 tx_ctrl, mgmt_sema;
5269
5270	for (i = 0; i < 10; i++) {
5271		mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
5272		if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
5273			break;
5274		msleep(500);
5275	}
5276
5277	if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
5278		return 0;
5279
5280	for (i = 0; i < 2; i++) {
5281		tx_ctrl = readl(base + NvRegTransmitterControl);
5282		tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
5283		writel(tx_ctrl, base + NvRegTransmitterControl);
5284
5285		/* verify that semaphore was acquired */
5286		tx_ctrl = readl(base + NvRegTransmitterControl);
5287		if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
5288		    ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
5289			np->mgmt_sema = 1;
5290			return 1;
5291		} else
5292			udelay(50);
5293	}
5294
5295	return 0;
5296}
5297
5298static void nv_mgmt_release_sema(struct net_device *dev)
5299{
5300	struct fe_priv *np = netdev_priv(dev);
5301	u8 __iomem *base = get_hwbase(dev);
5302	u32 tx_ctrl;
5303
5304	if (np->driver_data & DEV_HAS_MGMT_UNIT) {
5305		if (np->mgmt_sema) {
5306			tx_ctrl = readl(base + NvRegTransmitterControl);
5307			tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
5308			writel(tx_ctrl, base + NvRegTransmitterControl);
5309		}
5310	}
5311}
5312
5313
5314static int nv_mgmt_get_version(struct net_device *dev)
5315{
5316	struct fe_priv *np = netdev_priv(dev);
5317	u8 __iomem *base = get_hwbase(dev);
5318	u32 data_ready = readl(base + NvRegTransmitterControl);
5319	u32 data_ready2 = 0;
5320	unsigned long start;
5321	int ready = 0;
5322
5323	writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
5324	writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
5325	start = jiffies;
5326	while (time_before(jiffies, start + 5*HZ)) {
5327		data_ready2 = readl(base + NvRegTransmitterControl);
5328		if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
5329			ready = 1;
5330			break;
5331		}
5332		schedule_timeout_uninterruptible(1);
5333	}
5334
5335	if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
5336		return 0;
5337
5338	np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
5339
5340	return 1;
5341}
5342
5343static int nv_open(struct net_device *dev)
5344{
5345	struct fe_priv *np = netdev_priv(dev);
5346	u8 __iomem *base = get_hwbase(dev);
5347	int ret = 1;
5348	int oom, i;
5349	u32 low;
5350
5351	/* power up phy */
5352	mii_rw(dev, np->phyaddr, MII_BMCR,
5353	       mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
5354
5355	nv_txrx_gate(dev, false);
5356	/* erase previous misconfiguration */
5357	if (np->driver_data & DEV_HAS_POWER_CNTRL)
5358		nv_mac_reset(dev);
5359	writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5360	writel(0, base + NvRegMulticastAddrB);
5361	writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5362	writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5363	writel(0, base + NvRegPacketFilterFlags);
5364
5365	writel(0, base + NvRegTransmitterControl);
5366	writel(0, base + NvRegReceiverControl);
5367
5368	writel(0, base + NvRegAdapterControl);
5369
5370	if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
5371		writel(NVREG_TX_PAUSEFRAME_DISABLE,  base + NvRegTxPauseFrame);
5372
5373	/* initialize descriptor rings */
5374	set_bufsize(dev);
5375	oom = nv_init_ring(dev);
5376
5377	writel(0, base + NvRegLinkSpeed);
5378	writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5379	nv_txrx_reset(dev);
5380	writel(0, base + NvRegUnknownSetupReg6);
5381
5382	np->in_shutdown = 0;
5383
5384	/* give hw rings */
5385	setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
5386	writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
5387		base + NvRegRingSizes);
5388
5389	writel(np->linkspeed, base + NvRegLinkSpeed);
5390	if (np->desc_ver == DESC_VER_1)
5391		writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
5392	else
5393		writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
5394	writel(np->txrxctl_bits, base + NvRegTxRxControl);
5395	writel(np->vlanctl_bits, base + NvRegVlanControl);
5396	pci_push(base);
5397	writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
5398	if (reg_delay(dev, NvRegUnknownSetupReg5,
5399		      NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
5400		      NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
5401		netdev_info(dev,
5402			    "%s: SetupReg5, Bit 31 remained off\n", __func__);
5403
5404	writel(0, base + NvRegMIIMask);
5405	writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5406	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5407
5408	writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
5409	writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
5410	writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
5411	writel(np->rx_buf_sz, base + NvRegOffloadConfig);
5412
5413	writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
5414
5415	get_random_bytes(&low, sizeof(low));
5416	low &= NVREG_SLOTTIME_MASK;
5417	if (np->desc_ver == DESC_VER_1) {
5418		writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
5419	} else {
5420		if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
5421			/* setup legacy backoff */
5422			writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
5423		} else {
5424			writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
5425			nv_gear_backoff_reseed(dev);
5426		}
5427	}
5428	writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
5429	writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
5430	if (poll_interval == -1) {
5431		if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
5432			writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
5433		else
5434			writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
5435	} else
5436		writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
5437	writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
5438	writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
5439			base + NvRegAdapterControl);
5440	writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
5441	writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
5442	if (np->wolenabled)
5443		writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
5444
5445	i = readl(base + NvRegPowerState);
5446	if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
5447		writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
5448
5449	pci_push(base);
5450	udelay(10);
5451	writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
5452
5453	nv_disable_hw_interrupts(dev, np->irqmask);
5454	pci_push(base);
5455	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5456	writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
5457	pci_push(base);
5458
5459	if (nv_request_irq(dev, 0))
5460		goto out_drain;
5461
5462	/* ask for interrupts */
5463	nv_enable_hw_interrupts(dev, np->irqmask);
5464
5465	spin_lock_irq(&np->lock);
5466	writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
5467	writel(0, base + NvRegMulticastAddrB);
5468	writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
5469	writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
5470	writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5471	/* One manual link speed update: Interrupts are enabled, future link
5472	 * speed changes cause interrupts and are handled by nv_link_irq().
5473	 */
5474	{
5475		u32 miistat;
5476		miistat = readl(base + NvRegMIIStatus);
5477		writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5478	}
5479	/* set linkspeed to invalid value, thus force nv_update_linkspeed
5480	 * to init hw */
5481	np->linkspeed = 0;
5482	ret = nv_update_linkspeed(dev);
5483	nv_start_rxtx(dev);
5484	netif_start_queue(dev);
5485	nv_napi_enable(dev);
5486
5487	if (ret) {
5488		netif_carrier_on(dev);
5489	} else {
5490		netdev_info(dev, "no link during initialization\n");
5491		netif_carrier_off(dev);
5492	}
5493	if (oom)
5494		mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
5495
5496	/* start statistics timer */
5497	if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5498		mod_timer(&np->stats_poll,
5499			round_jiffies(jiffies + STATS_INTERVAL));
5500
5501	spin_unlock_irq(&np->lock);
5502
5503	/* If the loopback feature was set while the device was down, make sure
5504	 * that it's set correctly now.
5505	 */
5506	if (dev->features & NETIF_F_LOOPBACK)
5507		nv_set_loopback(dev, dev->features);
5508
5509	return 0;
5510out_drain:
5511	nv_drain_rxtx(dev);
5512	return ret;
5513}
5514
5515static int nv_close(struct net_device *dev)
5516{
5517	struct fe_priv *np = netdev_priv(dev);
5518	u8 __iomem *base;
5519
5520	spin_lock_irq(&np->lock);
5521	np->in_shutdown = 1;
5522	spin_unlock_irq(&np->lock);
5523	nv_napi_disable(dev);
5524	synchronize_irq(np->pci_dev->irq);
5525
5526	del_timer_sync(&np->oom_kick);
5527	del_timer_sync(&np->nic_poll);
5528	del_timer_sync(&np->stats_poll);
5529
5530	netif_stop_queue(dev);
5531	spin_lock_irq(&np->lock);
5532	nv_update_pause(dev, 0); /* otherwise stop_tx bricks NIC */
5533	nv_stop_rxtx(dev);
5534	nv_txrx_reset(dev);
5535
5536	/* disable interrupts on the nic or we will lock up */
5537	base = get_hwbase(dev);
5538	nv_disable_hw_interrupts(dev, np->irqmask);
5539	pci_push(base);
5540
5541	spin_unlock_irq(&np->lock);
5542
5543	nv_free_irq(dev);
5544
5545	nv_drain_rxtx(dev);
5546
5547	if (np->wolenabled || !phy_power_down) {
5548		nv_txrx_gate(dev, false);
5549		writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
5550		nv_start_rx(dev);
5551	} else {
5552		/* power down phy */
5553		mii_rw(dev, np->phyaddr, MII_BMCR,
5554		       mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
5555		nv_txrx_gate(dev, true);
5556	}
5557
5558	/* FIXME: power down nic */
5559
5560	return 0;
5561}
5562
5563static const struct net_device_ops nv_netdev_ops = {
5564	.ndo_open		= nv_open,
5565	.ndo_stop		= nv_close,
5566	.ndo_get_stats64	= nv_get_stats64,
5567	.ndo_start_xmit		= nv_start_xmit,
5568	.ndo_tx_timeout		= nv_tx_timeout,
5569	.ndo_change_mtu		= nv_change_mtu,
5570	.ndo_fix_features	= nv_fix_features,
5571	.ndo_set_features	= nv_set_features,
5572	.ndo_validate_addr	= eth_validate_addr,
5573	.ndo_set_mac_address	= nv_set_mac_address,
5574	.ndo_set_rx_mode	= nv_set_multicast,
5575#ifdef CONFIG_NET_POLL_CONTROLLER
5576	.ndo_poll_controller	= nv_poll_controller,
5577#endif
5578};
5579
5580static const struct net_device_ops nv_netdev_ops_optimized = {
5581	.ndo_open		= nv_open,
5582	.ndo_stop		= nv_close,
5583	.ndo_get_stats64	= nv_get_stats64,
5584	.ndo_start_xmit		= nv_start_xmit_optimized,
5585	.ndo_tx_timeout		= nv_tx_timeout,
5586	.ndo_change_mtu		= nv_change_mtu,
5587	.ndo_fix_features	= nv_fix_features,
5588	.ndo_set_features	= nv_set_features,
5589	.ndo_validate_addr	= eth_validate_addr,
5590	.ndo_set_mac_address	= nv_set_mac_address,
5591	.ndo_set_rx_mode	= nv_set_multicast,
5592#ifdef CONFIG_NET_POLL_CONTROLLER
5593	.ndo_poll_controller	= nv_poll_controller,
5594#endif
5595};
5596
5597static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
5598{
5599	struct net_device *dev;
5600	struct fe_priv *np;
5601	unsigned long addr;
5602	u8 __iomem *base;
5603	int err, i;
5604	u32 powerstate, txreg;
5605	u32 phystate_orig = 0, phystate;
5606	int phyinitialized = 0;
5607	static int printed_version;
5608
5609	if (!printed_version++)
5610		pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
5611			FORCEDETH_VERSION);
5612
5613	dev = alloc_etherdev(sizeof(struct fe_priv));
5614	err = -ENOMEM;
5615	if (!dev)
5616		goto out;
5617
5618	np = netdev_priv(dev);
5619	np->dev = dev;
5620	np->pci_dev = pci_dev;
5621	spin_lock_init(&np->lock);
5622	spin_lock_init(&np->hwstats_lock);
5623	SET_NETDEV_DEV(dev, &pci_dev->dev);
5624	u64_stats_init(&np->swstats_rx_syncp);
5625	u64_stats_init(&np->swstats_tx_syncp);
5626
5627	setup_timer(&np->oom_kick, nv_do_rx_refill, (unsigned long)dev);
5628	setup_timer(&np->nic_poll, nv_do_nic_poll, (unsigned long)dev);
5629	init_timer_deferrable(&np->stats_poll);
5630	np->stats_poll.data = (unsigned long) dev;
5631	np->stats_poll.function = nv_do_stats_poll;	/* timer handler */
5632
5633	err = pci_enable_device(pci_dev);
5634	if (err)
5635		goto out_free;
5636
5637	pci_set_master(pci_dev);
5638
5639	err = pci_request_regions(pci_dev, DRV_NAME);
5640	if (err < 0)
5641		goto out_disable;
5642
5643	if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
5644		np->register_size = NV_PCI_REGSZ_VER3;
5645	else if (id->driver_data & DEV_HAS_STATISTICS_V1)
5646		np->register_size = NV_PCI_REGSZ_VER2;
5647	else
5648		np->register_size = NV_PCI_REGSZ_VER1;
5649
5650	err = -EINVAL;
5651	addr = 0;
5652	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
5653		if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
5654				pci_resource_len(pci_dev, i) >= np->register_size) {
5655			addr = pci_resource_start(pci_dev, i);
5656			break;
5657		}
5658	}
5659	if (i == DEVICE_COUNT_RESOURCE) {
5660		dev_info(&pci_dev->dev, "Couldn't find register window\n");
5661		goto out_relreg;
5662	}
5663
5664	/* copy of driver data */
5665	np->driver_data = id->driver_data;
5666	/* copy of device id */
5667	np->device_id = id->device;
5668
5669	/* handle different descriptor versions */
5670	if (id->driver_data & DEV_HAS_HIGH_DMA) {
5671		/* packet format 3: supports 40-bit addressing */
5672		np->desc_ver = DESC_VER_3;
5673		np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
5674		if (dma_64bit) {
5675			if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
5676				dev_info(&pci_dev->dev,
5677					 "64-bit DMA failed, using 32-bit addressing\n");
5678			else
5679				dev->features |= NETIF_F_HIGHDMA;
5680			if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
5681				dev_info(&pci_dev->dev,
5682					 "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
5683			}
5684		}
5685	} else if (id->driver_data & DEV_HAS_LARGEDESC) {
5686		/* packet format 2: supports jumbo frames */
5687		np->desc_ver = DESC_VER_2;
5688		np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
5689	} else {
5690		/* original packet format */
5691		np->desc_ver = DESC_VER_1;
5692		np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
5693	}
5694
5695	np->pkt_limit = NV_PKTLIMIT_1;
5696	if (id->driver_data & DEV_HAS_LARGEDESC)
5697		np->pkt_limit = NV_PKTLIMIT_2;
5698
5699	if (id->driver_data & DEV_HAS_CHECKSUM) {
5700		np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
5701		dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
5702			NETIF_F_TSO | NETIF_F_RXCSUM;
5703	}
5704
5705	np->vlanctl_bits = 0;
5706	if (id->driver_data & DEV_HAS_VLAN) {
5707		np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
5708		dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
5709				    NETIF_F_HW_VLAN_CTAG_TX;
5710	}
5711
5712	dev->features |= dev->hw_features;
5713
5714	/* Add loopback capability to the device. */
5715	dev->hw_features |= NETIF_F_LOOPBACK;
5716
5717	/* MTU range: 64 - 1500 or 9100 */
5718	dev->min_mtu = ETH_ZLEN + ETH_FCS_LEN;
5719	dev->max_mtu = np->pkt_limit;
5720
5721	np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
5722	if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
5723	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
5724	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
5725		np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
5726	}
5727
5728	err = -ENOMEM;
5729	np->base = ioremap(addr, np->register_size);
5730	if (!np->base)
5731		goto out_relreg;
5732
5733	np->rx_ring_size = RX_RING_DEFAULT;
5734	np->tx_ring_size = TX_RING_DEFAULT;
5735
5736	if (!nv_optimized(np)) {
5737		np->rx_ring.orig = pci_alloc_consistent(pci_dev,
5738					sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
5739					&np->ring_addr);
5740		if (!np->rx_ring.orig)
5741			goto out_unmap;
5742		np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
5743	} else {
5744		np->rx_ring.ex = pci_alloc_consistent(pci_dev,
5745					sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
5746					&np->ring_addr);
5747		if (!np->rx_ring.ex)
5748			goto out_unmap;
5749		np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
5750	}
5751	np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5752	np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
5753	if (!np->rx_skb || !np->tx_skb)
5754		goto out_freering;
5755
5756	if (!nv_optimized(np))
5757		dev->netdev_ops = &nv_netdev_ops;
5758	else
5759		dev->netdev_ops = &nv_netdev_ops_optimized;
5760
5761	netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
5762	dev->ethtool_ops = &ops;
5763	dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
5764
5765	pci_set_drvdata(pci_dev, dev);
5766
5767	/* read the mac address */
5768	base = get_hwbase(dev);
5769	np->orig_mac[0] = readl(base + NvRegMacAddrA);
5770	np->orig_mac[1] = readl(base + NvRegMacAddrB);
5771
5772	/* check the workaround bit for correct mac address order */
5773	txreg = readl(base + NvRegTransmitPoll);
5774	if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
5775		/* mac address is already in correct order */
5776		dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5777		dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5778		dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5779		dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5780		dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5781		dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5782	} else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
5783		/* mac address is already in correct order */
5784		dev->dev_addr[0] = (np->orig_mac[0] >>  0) & 0xff;
5785		dev->dev_addr[1] = (np->orig_mac[0] >>  8) & 0xff;
5786		dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
5787		dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
5788		dev->dev_addr[4] = (np->orig_mac[1] >>  0) & 0xff;
5789		dev->dev_addr[5] = (np->orig_mac[1] >>  8) & 0xff;
5790		/*
5791		 * Set orig mac address back to the reversed version.
5792		 * This flag will be cleared during low power transition.
5793		 * Therefore, we should always put back the reversed address.
5794		 */
5795		np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
5796			(dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
5797		np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
5798	} else {
5799		/* need to reverse mac address to correct order */
5800		dev->dev_addr[0] = (np->orig_mac[1] >>  8) & 0xff;
5801		dev->dev_addr[1] = (np->orig_mac[1] >>  0) & 0xff;
5802		dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
5803		dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
5804		dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
5805		dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
5806		writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
5807		dev_dbg(&pci_dev->dev,
5808			"%s: set workaround bit for reversed mac addr\n",
5809			__func__);
5810	}
5811
5812	if (!is_valid_ether_addr(dev->dev_addr)) {
5813		/*
5814		 * Bad mac address. At least one bios sets the mac address
5815		 * to 01:23:45:67:89:ab
5816		 */
5817		dev_err(&pci_dev->dev,
5818			"Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
5819			dev->dev_addr);
5820		eth_hw_addr_random(dev);
5821		dev_err(&pci_dev->dev,
5822			"Using random MAC address: %pM\n", dev->dev_addr);
5823	}
5824
5825	/* set mac address */
5826	nv_copy_mac_to_hw(dev);
5827
5828	/* disable WOL */
5829	writel(0, base + NvRegWakeUpFlags);
5830	np->wolenabled = 0;
5831	device_set_wakeup_enable(&pci_dev->dev, false);
5832
5833	if (id->driver_data & DEV_HAS_POWER_CNTRL) {
5834
5835		/* take phy and nic out of low power mode */
5836		powerstate = readl(base + NvRegPowerState2);
5837		powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
5838		if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
5839		    pci_dev->revision >= 0xA3)
5840			powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
5841		writel(powerstate, base + NvRegPowerState2);
5842	}
5843
5844	if (np->desc_ver == DESC_VER_1)
5845		np->tx_flags = NV_TX_VALID;
5846	else
5847		np->tx_flags = NV_TX2_VALID;
5848
5849	np->msi_flags = 0;
5850	if ((id->driver_data & DEV_HAS_MSI) && msi)
5851		np->msi_flags |= NV_MSI_CAPABLE;
5852
5853	if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
5854		/* msix has had reported issues when modifying irqmask
5855		   as in the case of napi, therefore, disable for now
5856		*/
5857#if 0
5858		np->msi_flags |= NV_MSI_X_CAPABLE;
5859#endif
5860	}
5861
5862	if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
5863		np->irqmask = NVREG_IRQMASK_CPU;
5864		if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5865			np->msi_flags |= 0x0001;
5866	} else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
5867		   !(id->driver_data & DEV_NEED_TIMERIRQ)) {
5868		/* start off in throughput mode */
5869		np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5870		/* remove support for msix mode */
5871		np->msi_flags &= ~NV_MSI_X_CAPABLE;
5872	} else {
5873		optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
5874		np->irqmask = NVREG_IRQMASK_THROUGHPUT;
5875		if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
5876			np->msi_flags |= 0x0003;
5877	}
5878
5879	if (id->driver_data & DEV_NEED_TIMERIRQ)
5880		np->irqmask |= NVREG_IRQ_TIMER;
5881	if (id->driver_data & DEV_NEED_LINKTIMER) {
5882		np->need_linktimer = 1;
5883		np->link_timeout = jiffies + LINK_TIMEOUT;
5884	} else {
5885		np->need_linktimer = 0;
5886	}
5887
5888	/* Limit the number of tx's outstanding for hw bug */
5889	if (id->driver_data & DEV_NEED_TX_LIMIT) {
5890		np->tx_limit = 1;
5891		if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
5892		    pci_dev->revision >= 0xA2)
5893			np->tx_limit = 0;
5894	}
5895
5896	/* clear phy state and temporarily halt phy interrupts */
5897	writel(0, base + NvRegMIIMask);
5898	phystate = readl(base + NvRegAdapterControl);
5899	if (phystate & NVREG_ADAPTCTL_RUNNING) {
5900		phystate_orig = 1;
5901		phystate &= ~NVREG_ADAPTCTL_RUNNING;
5902		writel(phystate, base + NvRegAdapterControl);
5903	}
5904	writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
5905
5906	if (id->driver_data & DEV_HAS_MGMT_UNIT) {
5907		/* management unit running on the mac? */
5908		if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
5909		    (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
5910		    nv_mgmt_acquire_sema(dev) &&
5911		    nv_mgmt_get_version(dev)) {
5912			np->mac_in_use = 1;
5913			if (np->mgmt_version > 0)
5914				np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
5915			/* management unit setup the phy already? */
5916			if (np->mac_in_use &&
5917			    ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
5918			     NVREG_XMITCTL_SYNC_PHY_INIT)) {
5919				/* phy is inited by mgmt unit */
5920				phyinitialized = 1;
5921			} else {
5922				/* we need to init the phy */
5923			}
5924		}
5925	}
5926
5927	/* find a suitable phy */
5928	for (i = 1; i <= 32; i++) {
5929		int id1, id2;
5930		int phyaddr = i & 0x1F;
5931
5932		spin_lock_irq(&np->lock);
5933		id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
5934		spin_unlock_irq(&np->lock);
5935		if (id1 < 0 || id1 == 0xffff)
5936			continue;
5937		spin_lock_irq(&np->lock);
5938		id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
5939		spin_unlock_irq(&np->lock);
5940		if (id2 < 0 || id2 == 0xffff)
5941			continue;
5942
5943		np->phy_model = id2 & PHYID2_MODEL_MASK;
5944		id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
5945		id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
5946		np->phyaddr = phyaddr;
5947		np->phy_oui = id1 | id2;
5948
5949		/* Realtek hardcoded phy id1 to all zero's on certain phys */
5950		if (np->phy_oui == PHY_OUI_REALTEK2)
5951			np->phy_oui = PHY_OUI_REALTEK;
5952		/* Setup phy revision for Realtek */
5953		if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
5954			np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
5955
5956		break;
5957	}
5958	if (i == 33) {
5959		dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
5960		goto out_error;
5961	}
5962
5963	if (!phyinitialized) {
5964		/* reset it */
5965		phy_init(dev);
5966	} else {
5967		/* see if it is a gigabit phy */
5968		u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
5969		if (mii_status & PHY_GIGABIT)
5970			np->gigabit = PHY_GIGABIT;
5971	}
5972
5973	/* set default link speed settings */
5974	np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
5975	np->duplex = 0;
5976	np->autoneg = 1;
5977
5978	err = register_netdev(dev);
5979	if (err) {
5980		dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
5981		goto out_error;
5982	}
5983
5984	netif_carrier_off(dev);
5985
5986	/* Some NICs freeze when TX pause is enabled while NIC is
5987	 * down, and this stays across warm reboots. The sequence
5988	 * below should be enough to recover from that state.
5989	 */
5990	nv_update_pause(dev, 0);
5991	nv_start_tx(dev);
5992	nv_stop_tx(dev);
5993
5994	if (id->driver_data & DEV_HAS_VLAN)
5995		nv_vlan_mode(dev, dev->features);
5996
5997	dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
5998		 dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
5999
6000	dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
6001		 dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
6002		 dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
6003			"csum " : "",
6004		 dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
6005				  NETIF_F_HW_VLAN_CTAG_TX) ?
6006			"vlan " : "",
6007		 dev->features & (NETIF_F_LOOPBACK) ?
6008			"loopback " : "",
6009		 id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
6010		 id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
6011		 id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
6012		 np->gigabit == PHY_GIGABIT ? "gbit " : "",
6013		 np->need_linktimer ? "lnktim " : "",
6014		 np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
6015		 np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
6016		 np->desc_ver);
6017
6018	return 0;
6019
6020out_error:
6021	if (phystate_orig)
6022		writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
6023out_freering:
6024	free_rings(dev);
6025out_unmap:
6026	iounmap(get_hwbase(dev));
6027out_relreg:
6028	pci_release_regions(pci_dev);
6029out_disable:
6030	pci_disable_device(pci_dev);
6031out_free:
6032	free_netdev(dev);
6033out:
6034	return err;
6035}
6036
6037static void nv_restore_phy(struct net_device *dev)
6038{
6039	struct fe_priv *np = netdev_priv(dev);
6040	u16 phy_reserved, mii_control;
6041
6042	if (np->phy_oui == PHY_OUI_REALTEK &&
6043	    np->phy_model == PHY_MODEL_REALTEK_8201 &&
6044	    phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
6045		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
6046		phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
6047		phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
6048		phy_reserved |= PHY_REALTEK_INIT8;
6049		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
6050		mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
6051
6052		/* restart auto negotiation */
6053		mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
6054		mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
6055		mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
6056	}
6057}
6058
6059static void nv_restore_mac_addr(struct pci_dev *pci_dev)
6060{
6061	struct net_device *dev = pci_get_drvdata(pci_dev);
6062	struct fe_priv *np = netdev_priv(dev);
6063	u8 __iomem *base = get_hwbase(dev);
6064
6065	/* special op: write back the misordered MAC address - otherwise
6066	 * the next nv_probe would see a wrong address.
6067	 */
6068	writel(np->orig_mac[0], base + NvRegMacAddrA);
6069	writel(np->orig_mac[1], base + NvRegMacAddrB);
6070	writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
6071	       base + NvRegTransmitPoll);
6072}
6073
6074static void nv_remove(struct pci_dev *pci_dev)
6075{
6076	struct net_device *dev = pci_get_drvdata(pci_dev);
6077
6078	unregister_netdev(dev);
6079
6080	nv_restore_mac_addr(pci_dev);
6081
6082	/* restore any phy related changes */
6083	nv_restore_phy(dev);
6084
6085	nv_mgmt_release_sema(dev);
6086
6087	/* free all structures */
6088	free_rings(dev);
6089	iounmap(get_hwbase(dev));
6090	pci_release_regions(pci_dev);
6091	pci_disable_device(pci_dev);
6092	free_netdev(dev);
6093}
6094
6095#ifdef CONFIG_PM_SLEEP
6096static int nv_suspend(struct device *device)
6097{
6098	struct pci_dev *pdev = to_pci_dev(device);
6099	struct net_device *dev = pci_get_drvdata(pdev);
6100	struct fe_priv *np = netdev_priv(dev);
6101	u8 __iomem *base = get_hwbase(dev);
6102	int i;
6103
6104	if (netif_running(dev)) {
6105		/* Gross. */
6106		nv_close(dev);
6107	}
6108	netif_device_detach(dev);
6109
6110	/* save non-pci configuration space */
6111	for (i = 0; i <= np->register_size/sizeof(u32); i++)
6112		np->saved_config_space[i] = readl(base + i*sizeof(u32));
6113
6114	return 0;
6115}
6116
6117static int nv_resume(struct device *device)
6118{
6119	struct pci_dev *pdev = to_pci_dev(device);
6120	struct net_device *dev = pci_get_drvdata(pdev);
6121	struct fe_priv *np = netdev_priv(dev);
6122	u8 __iomem *base = get_hwbase(dev);
6123	int i, rc = 0;
6124
6125	/* restore non-pci configuration space */
6126	for (i = 0; i <= np->register_size/sizeof(u32); i++)
6127		writel(np->saved_config_space[i], base+i*sizeof(u32));
6128
6129	if (np->driver_data & DEV_NEED_MSI_FIX)
6130		pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
6131
6132	/* restore phy state, including autoneg */
6133	phy_init(dev);
6134
6135	netif_device_attach(dev);
6136	if (netif_running(dev)) {
6137		rc = nv_open(dev);
6138		nv_set_multicast(dev);
6139	}
6140	return rc;
6141}
6142
6143static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
6144#define NV_PM_OPS (&nv_pm_ops)
6145
6146#else
6147#define NV_PM_OPS NULL
6148#endif /* CONFIG_PM_SLEEP */
6149
6150#ifdef CONFIG_PM
6151static void nv_shutdown(struct pci_dev *pdev)
6152{
6153	struct net_device *dev = pci_get_drvdata(pdev);
6154	struct fe_priv *np = netdev_priv(dev);
6155
6156	if (netif_running(dev))
6157		nv_close(dev);
6158
6159	/*
6160	 * Restore the MAC so a kernel started by kexec won't get confused.
6161	 * If we really go for poweroff, we must not restore the MAC,
6162	 * otherwise the MAC for WOL will be reversed at least on some boards.
6163	 */
6164	if (system_state != SYSTEM_POWER_OFF)
6165		nv_restore_mac_addr(pdev);
6166
6167	pci_disable_device(pdev);
6168	/*
6169	 * Apparently it is not possible to reinitialise from D3 hot,
6170	 * only put the device into D3 if we really go for poweroff.
6171	 */
6172	if (system_state == SYSTEM_POWER_OFF) {
6173		pci_wake_from_d3(pdev, np->wolenabled);
6174		pci_set_power_state(pdev, PCI_D3hot);
6175	}
6176}
6177#else
6178#define nv_shutdown NULL
6179#endif /* CONFIG_PM */
6180
6181static const struct pci_device_id pci_tbl[] = {
6182	{	/* nForce Ethernet Controller */
6183		PCI_DEVICE(0x10DE, 0x01C3),
6184		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6185	},
6186	{	/* nForce2 Ethernet Controller */
6187		PCI_DEVICE(0x10DE, 0x0066),
6188		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6189	},
6190	{	/* nForce3 Ethernet Controller */
6191		PCI_DEVICE(0x10DE, 0x00D6),
6192		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
6193	},
6194	{	/* nForce3 Ethernet Controller */
6195		PCI_DEVICE(0x10DE, 0x0086),
6196		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6197	},
6198	{	/* nForce3 Ethernet Controller */
6199		PCI_DEVICE(0x10DE, 0x008C),
6200		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6201	},
6202	{	/* nForce3 Ethernet Controller */
6203		PCI_DEVICE(0x10DE, 0x00E6),
6204		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6205	},
6206	{	/* nForce3 Ethernet Controller */
6207		PCI_DEVICE(0x10DE, 0x00DF),
6208		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
6209	},
6210	{	/* CK804 Ethernet Controller */
6211		PCI_DEVICE(0x10DE, 0x0056),
6212		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6213	},
6214	{	/* CK804 Ethernet Controller */
6215		PCI_DEVICE(0x10DE, 0x0057),
6216		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6217	},
6218	{	/* MCP04 Ethernet Controller */
6219		PCI_DEVICE(0x10DE, 0x0037),
6220		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6221	},
6222	{	/* MCP04 Ethernet Controller */
6223		PCI_DEVICE(0x10DE, 0x0038),
6224		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
6225	},
6226	{	/* MCP51 Ethernet Controller */
6227		PCI_DEVICE(0x10DE, 0x0268),
6228		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6229	},
6230	{	/* MCP51 Ethernet Controller */
6231		PCI_DEVICE(0x10DE, 0x0269),
6232		.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
6233	},
6234	{	/* MCP55 Ethernet Controller */
6235		PCI_DEVICE(0x10DE, 0x0372),
6236		.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,
6237	},
6238	{	/* MCP55 Ethernet Controller */
6239		PCI_DEVICE(0x10DE, 0x0373),
6240		.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,
6241	},
6242	{	/* MCP61 Ethernet Controller */
6243		PCI_DEVICE(0x10DE, 0x03E5),
6244		.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,
6245	},
6246	{	/* MCP61 Ethernet Controller */
6247		PCI_DEVICE(0x10DE, 0x03E6),
6248		.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,
6249	},
6250	{	/* MCP61 Ethernet Controller */
6251		PCI_DEVICE(0x10DE, 0x03EE),
6252		.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,
6253	},
6254	{	/* MCP61 Ethernet Controller */
6255		PCI_DEVICE(0x10DE, 0x03EF),
6256		.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,
6257	},
6258	{	/* MCP65 Ethernet Controller */
6259		PCI_DEVICE(0x10DE, 0x0450),
6260		.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,
6261	},
6262	{	/* MCP65 Ethernet Controller */
6263		PCI_DEVICE(0x10DE, 0x0451),
6264		.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,
6265	},
6266	{	/* MCP65 Ethernet Controller */
6267		PCI_DEVICE(0x10DE, 0x0452),
6268		.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,
6269	},
6270	{	/* MCP65 Ethernet Controller */
6271		PCI_DEVICE(0x10DE, 0x0453),
6272		.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,
6273	},
6274	{	/* MCP67 Ethernet Controller */
6275		PCI_DEVICE(0x10DE, 0x054C),
6276		.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,
6277	},
6278	{	/* MCP67 Ethernet Controller */
6279		PCI_DEVICE(0x10DE, 0x054D),
6280		.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,
6281	},
6282	{	/* MCP67 Ethernet Controller */
6283		PCI_DEVICE(0x10DE, 0x054E),
6284		.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,
6285	},
6286	{	/* MCP67 Ethernet Controller */
6287		PCI_DEVICE(0x10DE, 0x054F),
6288		.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,
6289	},
6290	{	/* MCP73 Ethernet Controller */
6291		PCI_DEVICE(0x10DE, 0x07DC),
6292		.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,
6293	},
6294	{	/* MCP73 Ethernet Controller */
6295		PCI_DEVICE(0x10DE, 0x07DD),
6296		.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,
6297	},
6298	{	/* MCP73 Ethernet Controller */
6299		PCI_DEVICE(0x10DE, 0x07DE),
6300		.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,
6301	},
6302	{	/* MCP73 Ethernet Controller */
6303		PCI_DEVICE(0x10DE, 0x07DF),
6304		.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,
6305	},
6306	{	/* MCP77 Ethernet Controller */
6307		PCI_DEVICE(0x10DE, 0x0760),
6308		.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,
6309	},
6310	{	/* MCP77 Ethernet Controller */
6311		PCI_DEVICE(0x10DE, 0x0761),
6312		.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,
6313	},
6314	{	/* MCP77 Ethernet Controller */
6315		PCI_DEVICE(0x10DE, 0x0762),
6316		.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,
6317	},
6318	{	/* MCP77 Ethernet Controller */
6319		PCI_DEVICE(0x10DE, 0x0763),
6320		.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,
6321	},
6322	{	/* MCP79 Ethernet Controller */
6323		PCI_DEVICE(0x10DE, 0x0AB0),
6324		.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,
6325	},
6326	{	/* MCP79 Ethernet Controller */
6327		PCI_DEVICE(0x10DE, 0x0AB1),
6328		.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,
6329	},
6330	{	/* MCP79 Ethernet Controller */
6331		PCI_DEVICE(0x10DE, 0x0AB2),
6332		.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,
6333	},
6334	{	/* MCP79 Ethernet Controller */
6335		PCI_DEVICE(0x10DE, 0x0AB3),
6336		.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,
6337	},
6338	{	/* MCP89 Ethernet Controller */
6339		PCI_DEVICE(0x10DE, 0x0D7D),
6340		.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,
6341	},
6342	{0,},
6343};
6344
6345static struct pci_driver forcedeth_pci_driver = {
6346	.name		= DRV_NAME,
6347	.id_table	= pci_tbl,
6348	.probe		= nv_probe,
6349	.remove		= nv_remove,
6350	.shutdown	= nv_shutdown,
6351	.driver.pm	= NV_PM_OPS,
6352};
6353
6354module_param(max_interrupt_work, int, 0);
6355MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
6356module_param(optimization_mode, int, 0);
6357MODULE_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.");
6358module_param(poll_interval, int, 0);
6359MODULE_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.");
6360module_param(msi, int, 0);
6361MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
6362module_param(msix, int, 0);
6363MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
6364module_param(dma_64bit, int, 0);
6365MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
6366module_param(phy_cross, int, 0);
6367MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
6368module_param(phy_power_down, int, 0);
6369MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
6370module_param(debug_tx_timeout, bool, 0);
6371MODULE_PARM_DESC(debug_tx_timeout,
6372		 "Dump tx related registers and ring when tx_timeout happens");
6373
6374module_pci_driver(forcedeth_pci_driver);
6375MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
6376MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
6377MODULE_LICENSE("GPL");
6378MODULE_DEVICE_TABLE(pci, pci_tbl);