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linux_dsm_epyc7002/drivers/net/forcedeth.c
Rafael J. Wysocki dba5a68ae1 forcedeth: Do not use legacy PCI power management 
The forcedeth driver uses the legacy PCI power management, so it has
to do PCI-specific things in its ->suspend() and ->resume() callbacks
and some of them are not done correctly.

Convert forcedeth to the new PCI power management framework and make
it let the PCI subsystem take care of all the PCI-specific aspects of
device handling during system power transitions.

Tested with nVidia Corporation MCP55 Ethernet (rev a2).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 16:20:29 -08:00

6035 lines
179 KiB
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/*
* forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
*
* Note: This driver is a cleanroom reimplementation based on reverse
* engineered documentation written by Carl-Daniel Hailfinger
* and Andrew de Quincey.
*
* NVIDIA, nForce and other NVIDIA marks are trademarks or registered
* trademarks of NVIDIA Corporation in the United States and other
* countries.
*
* Copyright (C) 2003,4,5 Manfred Spraul
* Copyright (C) 2004 Andrew de Quincey (wol support)
* Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
* IRQ rate fixes, bigendian fixes, cleanups, verification)
* Copyright (c) 2004,2005,2006,2007,2008,2009 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Known bugs:
* We suspect that on some hardware no TX done interrupts are generated.
* This means recovery from netif_stop_queue only happens if the hw timer
* interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
* and the timer is active in the IRQMask, or if a rx packet arrives by chance.
* If your hardware reliably generates tx done interrupts, then you can remove
* DEV_NEED_TIMERIRQ from the driver_data flags.
* DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
* superfluous timer interrupts from the nic.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define FORCEDETH_VERSION "0.64"
#define DRV_NAME "forcedeth"
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/timer.h>
#include <linux/skbuff.h>
#include <linux/mii.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/if_vlan.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/system.h>
#define TX_WORK_PER_LOOP 64
#define RX_WORK_PER_LOOP 64
/*
* Hardware access:
*/
#define DEV_NEED_TIMERIRQ 0x0000001 /* set the timer irq flag in the irq mask */
#define DEV_NEED_LINKTIMER 0x0000002 /* poll link settings. Relies on the timer irq */
#define DEV_HAS_LARGEDESC 0x0000004 /* device supports jumbo frames and needs packet format 2 */
#define DEV_HAS_HIGH_DMA 0x0000008 /* device supports 64bit dma */
#define DEV_HAS_CHECKSUM 0x0000010 /* device supports tx and rx checksum offloads */
#define DEV_HAS_VLAN 0x0000020 /* device supports vlan tagging and striping */
#define DEV_HAS_MSI 0x0000040 /* device supports MSI */
#define DEV_HAS_MSI_X 0x0000080 /* device supports MSI-X */
#define DEV_HAS_POWER_CNTRL 0x0000100 /* device supports power savings */
#define DEV_HAS_STATISTICS_V1 0x0000200 /* device supports hw statistics version 1 */
#define DEV_HAS_STATISTICS_V2 0x0000400 /* device supports hw statistics version 2 */
#define DEV_HAS_STATISTICS_V3 0x0000800 /* device supports hw statistics version 3 */
#define DEV_HAS_STATISTICS_V12 0x0000600 /* device supports hw statistics version 1 and 2 */
#define DEV_HAS_STATISTICS_V123 0x0000e00 /* device supports hw statistics version 1, 2, and 3 */
#define DEV_HAS_TEST_EXTENDED 0x0001000 /* device supports extended diagnostic test */
#define DEV_HAS_MGMT_UNIT 0x0002000 /* device supports management unit */
#define DEV_HAS_CORRECT_MACADDR 0x0004000 /* device supports correct mac address order */
#define DEV_HAS_COLLISION_FIX 0x0008000 /* device supports tx collision fix */
#define DEV_HAS_PAUSEFRAME_TX_V1 0x0010000 /* device supports tx pause frames version 1 */
#define DEV_HAS_PAUSEFRAME_TX_V2 0x0020000 /* device supports tx pause frames version 2 */
#define DEV_HAS_PAUSEFRAME_TX_V3 0x0040000 /* device supports tx pause frames version 3 */
#define DEV_NEED_TX_LIMIT 0x0080000 /* device needs to limit tx */
#define DEV_NEED_TX_LIMIT2 0x0180000 /* device needs to limit tx, expect for some revs */
#define DEV_HAS_GEAR_MODE 0x0200000 /* device supports gear mode */
#define DEV_NEED_PHY_INIT_FIX 0x0400000 /* device needs specific phy workaround */
#define DEV_NEED_LOW_POWER_FIX 0x0800000 /* device needs special power up workaround */
#define DEV_NEED_MSI_FIX 0x1000000 /* device needs msi workaround */
enum {
NvRegIrqStatus = 0x000,
#define NVREG_IRQSTAT_MIIEVENT 0x040
#define NVREG_IRQSTAT_MASK 0x83ff
NvRegIrqMask = 0x004,
#define NVREG_IRQ_RX_ERROR 0x0001
#define NVREG_IRQ_RX 0x0002
#define NVREG_IRQ_RX_NOBUF 0x0004
#define NVREG_IRQ_TX_ERR 0x0008
#define NVREG_IRQ_TX_OK 0x0010
#define NVREG_IRQ_TIMER 0x0020
#define NVREG_IRQ_LINK 0x0040
#define NVREG_IRQ_RX_FORCED 0x0080
#define NVREG_IRQ_TX_FORCED 0x0100
#define NVREG_IRQ_RECOVER_ERROR 0x8200
#define NVREG_IRQMASK_THROUGHPUT 0x00df
#define NVREG_IRQMASK_CPU 0x0060
#define NVREG_IRQ_TX_ALL (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
#define NVREG_IRQ_RX_ALL (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
NvRegUnknownSetupReg6 = 0x008,
#define NVREG_UNKSETUP6_VAL 3
/*
* NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
* NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
*/
NvRegPollingInterval = 0x00c,
#define NVREG_POLL_DEFAULT_THROUGHPUT 65535 /* backup tx cleanup if loop max reached */
#define NVREG_POLL_DEFAULT_CPU 13
NvRegMSIMap0 = 0x020,
NvRegMSIMap1 = 0x024,
NvRegMSIIrqMask = 0x030,
#define NVREG_MSI_VECTOR_0_ENABLED 0x01
NvRegMisc1 = 0x080,
#define NVREG_MISC1_PAUSE_TX 0x01
#define NVREG_MISC1_HD 0x02
#define NVREG_MISC1_FORCE 0x3b0f3c
NvRegMacReset = 0x34,
#define NVREG_MAC_RESET_ASSERT 0x0F3
NvRegTransmitterControl = 0x084,
#define NVREG_XMITCTL_START 0x01
#define NVREG_XMITCTL_MGMT_ST 0x40000000
#define NVREG_XMITCTL_SYNC_MASK 0x000f0000
#define NVREG_XMITCTL_SYNC_NOT_READY 0x0
#define NVREG_XMITCTL_SYNC_PHY_INIT 0x00040000
#define NVREG_XMITCTL_MGMT_SEMA_MASK 0x00000f00
#define NVREG_XMITCTL_MGMT_SEMA_FREE 0x0
#define NVREG_XMITCTL_HOST_SEMA_MASK 0x0000f000
#define NVREG_XMITCTL_HOST_SEMA_ACQ 0x0000f000
#define NVREG_XMITCTL_HOST_LOADED 0x00004000
#define NVREG_XMITCTL_TX_PATH_EN 0x01000000
#define NVREG_XMITCTL_DATA_START 0x00100000
#define NVREG_XMITCTL_DATA_READY 0x00010000
#define NVREG_XMITCTL_DATA_ERROR 0x00020000
NvRegTransmitterStatus = 0x088,
#define NVREG_XMITSTAT_BUSY 0x01
NvRegPacketFilterFlags = 0x8c,
#define NVREG_PFF_PAUSE_RX 0x08
#define NVREG_PFF_ALWAYS 0x7F0000
#define NVREG_PFF_PROMISC 0x80
#define NVREG_PFF_MYADDR 0x20
#define NVREG_PFF_LOOPBACK 0x10
NvRegOffloadConfig = 0x90,
#define NVREG_OFFLOAD_HOMEPHY 0x601
#define NVREG_OFFLOAD_NORMAL RX_NIC_BUFSIZE
NvRegReceiverControl = 0x094,
#define NVREG_RCVCTL_START 0x01
#define NVREG_RCVCTL_RX_PATH_EN 0x01000000
NvRegReceiverStatus = 0x98,
#define NVREG_RCVSTAT_BUSY 0x01
NvRegSlotTime = 0x9c,
#define NVREG_SLOTTIME_LEGBF_ENABLED 0x80000000
#define NVREG_SLOTTIME_10_100_FULL 0x00007f00
#define NVREG_SLOTTIME_1000_FULL 0x0003ff00
#define NVREG_SLOTTIME_HALF 0x0000ff00
#define NVREG_SLOTTIME_DEFAULT 0x00007f00
#define NVREG_SLOTTIME_MASK 0x000000ff
NvRegTxDeferral = 0xA0,
#define NVREG_TX_DEFERRAL_DEFAULT 0x15050f
#define NVREG_TX_DEFERRAL_RGMII_10_100 0x16070f
#define NVREG_TX_DEFERRAL_RGMII_1000 0x14050f
#define NVREG_TX_DEFERRAL_RGMII_STRETCH_10 0x16190f
#define NVREG_TX_DEFERRAL_RGMII_STRETCH_100 0x16300f
#define NVREG_TX_DEFERRAL_MII_STRETCH 0x152000
NvRegRxDeferral = 0xA4,
#define NVREG_RX_DEFERRAL_DEFAULT 0x16
NvRegMacAddrA = 0xA8,
NvRegMacAddrB = 0xAC,
NvRegMulticastAddrA = 0xB0,
#define NVREG_MCASTADDRA_FORCE 0x01
NvRegMulticastAddrB = 0xB4,
NvRegMulticastMaskA = 0xB8,
#define NVREG_MCASTMASKA_NONE 0xffffffff
NvRegMulticastMaskB = 0xBC,
#define NVREG_MCASTMASKB_NONE 0xffff
NvRegPhyInterface = 0xC0,
#define PHY_RGMII 0x10000000
NvRegBackOffControl = 0xC4,
#define NVREG_BKOFFCTRL_DEFAULT 0x70000000
#define NVREG_BKOFFCTRL_SEED_MASK 0x000003ff
#define NVREG_BKOFFCTRL_SELECT 24
#define NVREG_BKOFFCTRL_GEAR 12
NvRegTxRingPhysAddr = 0x100,
NvRegRxRingPhysAddr = 0x104,
NvRegRingSizes = 0x108,
#define NVREG_RINGSZ_TXSHIFT 0
#define NVREG_RINGSZ_RXSHIFT 16
NvRegTransmitPoll = 0x10c,
#define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
NvRegLinkSpeed = 0x110,
#define NVREG_LINKSPEED_FORCE 0x10000
#define NVREG_LINKSPEED_10 1000
#define NVREG_LINKSPEED_100 100
#define NVREG_LINKSPEED_1000 50
#define NVREG_LINKSPEED_MASK (0xFFF)
NvRegUnknownSetupReg5 = 0x130,
#define NVREG_UNKSETUP5_BIT31 (1<<31)
NvRegTxWatermark = 0x13c,
#define NVREG_TX_WM_DESC1_DEFAULT 0x0200010
#define NVREG_TX_WM_DESC2_3_DEFAULT 0x1e08000
#define NVREG_TX_WM_DESC2_3_1000 0xfe08000
NvRegTxRxControl = 0x144,
#define NVREG_TXRXCTL_KICK 0x0001
#define NVREG_TXRXCTL_BIT1 0x0002
#define NVREG_TXRXCTL_BIT2 0x0004
#define NVREG_TXRXCTL_IDLE 0x0008
#define NVREG_TXRXCTL_RESET 0x0010
#define NVREG_TXRXCTL_RXCHECK 0x0400
#define NVREG_TXRXCTL_DESC_1 0
#define NVREG_TXRXCTL_DESC_2 0x002100
#define NVREG_TXRXCTL_DESC_3 0xc02200
#define NVREG_TXRXCTL_VLANSTRIP 0x00040
#define NVREG_TXRXCTL_VLANINS 0x00080
NvRegTxRingPhysAddrHigh = 0x148,
NvRegRxRingPhysAddrHigh = 0x14C,
NvRegTxPauseFrame = 0x170,
#define NVREG_TX_PAUSEFRAME_DISABLE 0x0fff0080
#define NVREG_TX_PAUSEFRAME_ENABLE_V1 0x01800010
#define NVREG_TX_PAUSEFRAME_ENABLE_V2 0x056003f0
#define NVREG_TX_PAUSEFRAME_ENABLE_V3 0x09f00880
NvRegTxPauseFrameLimit = 0x174,
#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
NvRegMIIStatus = 0x180,
#define NVREG_MIISTAT_ERROR 0x0001
#define NVREG_MIISTAT_LINKCHANGE 0x0008
#define NVREG_MIISTAT_MASK_RW 0x0007
#define NVREG_MIISTAT_MASK_ALL 0x000f
NvRegMIIMask = 0x184,
#define NVREG_MII_LINKCHANGE 0x0008
NvRegAdapterControl = 0x188,
#define NVREG_ADAPTCTL_START 0x02
#define NVREG_ADAPTCTL_LINKUP 0x04
#define NVREG_ADAPTCTL_PHYVALID 0x40000
#define NVREG_ADAPTCTL_RUNNING 0x100000
#define NVREG_ADAPTCTL_PHYSHIFT 24
NvRegMIISpeed = 0x18c,
#define NVREG_MIISPEED_BIT8 (1<<8)
#define NVREG_MIIDELAY 5
NvRegMIIControl = 0x190,
#define NVREG_MIICTL_INUSE 0x08000
#define NVREG_MIICTL_WRITE 0x00400
#define NVREG_MIICTL_ADDRSHIFT 5
NvRegMIIData = 0x194,
NvRegTxUnicast = 0x1a0,
NvRegTxMulticast = 0x1a4,
NvRegTxBroadcast = 0x1a8,
NvRegWakeUpFlags = 0x200,
#define NVREG_WAKEUPFLAGS_VAL 0x7770
#define NVREG_WAKEUPFLAGS_BUSYSHIFT 24
#define NVREG_WAKEUPFLAGS_ENABLESHIFT 16
#define NVREG_WAKEUPFLAGS_D3SHIFT 12
#define NVREG_WAKEUPFLAGS_D2SHIFT 8
#define NVREG_WAKEUPFLAGS_D1SHIFT 4
#define NVREG_WAKEUPFLAGS_D0SHIFT 0
#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT 0x01
#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT 0x02
#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE 0x04
#define NVREG_WAKEUPFLAGS_ENABLE 0x1111
NvRegMgmtUnitGetVersion = 0x204,
#define NVREG_MGMTUNITGETVERSION 0x01
NvRegMgmtUnitVersion = 0x208,
#define NVREG_MGMTUNITVERSION 0x08
NvRegPowerCap = 0x268,
#define NVREG_POWERCAP_D3SUPP (1<<30)
#define NVREG_POWERCAP_D2SUPP (1<<26)
#define NVREG_POWERCAP_D1SUPP (1<<25)
NvRegPowerState = 0x26c,
#define NVREG_POWERSTATE_POWEREDUP 0x8000
#define NVREG_POWERSTATE_VALID 0x0100
#define NVREG_POWERSTATE_MASK 0x0003
#define NVREG_POWERSTATE_D0 0x0000
#define NVREG_POWERSTATE_D1 0x0001
#define NVREG_POWERSTATE_D2 0x0002
#define NVREG_POWERSTATE_D3 0x0003
NvRegMgmtUnitControl = 0x278,
#define NVREG_MGMTUNITCONTROL_INUSE 0x20000
NvRegTxCnt = 0x280,
NvRegTxZeroReXmt = 0x284,
NvRegTxOneReXmt = 0x288,
NvRegTxManyReXmt = 0x28c,
NvRegTxLateCol = 0x290,
NvRegTxUnderflow = 0x294,
NvRegTxLossCarrier = 0x298,
NvRegTxExcessDef = 0x29c,
NvRegTxRetryErr = 0x2a0,
NvRegRxFrameErr = 0x2a4,
NvRegRxExtraByte = 0x2a8,
NvRegRxLateCol = 0x2ac,
NvRegRxRunt = 0x2b0,
NvRegRxFrameTooLong = 0x2b4,
NvRegRxOverflow = 0x2b8,
NvRegRxFCSErr = 0x2bc,
NvRegRxFrameAlignErr = 0x2c0,
NvRegRxLenErr = 0x2c4,
NvRegRxUnicast = 0x2c8,
NvRegRxMulticast = 0x2cc,
NvRegRxBroadcast = 0x2d0,
NvRegTxDef = 0x2d4,
NvRegTxFrame = 0x2d8,
NvRegRxCnt = 0x2dc,
NvRegTxPause = 0x2e0,
NvRegRxPause = 0x2e4,
NvRegRxDropFrame = 0x2e8,
NvRegVlanControl = 0x300,
#define NVREG_VLANCONTROL_ENABLE 0x2000
NvRegMSIXMap0 = 0x3e0,
NvRegMSIXMap1 = 0x3e4,
NvRegMSIXIrqStatus = 0x3f0,
NvRegPowerState2 = 0x600,
#define NVREG_POWERSTATE2_POWERUP_MASK 0x0F15
#define NVREG_POWERSTATE2_POWERUP_REV_A3 0x0001
#define NVREG_POWERSTATE2_PHY_RESET 0x0004
#define NVREG_POWERSTATE2_GATE_CLOCKS 0x0F00
};
/* Big endian: should work, but is untested */
struct ring_desc {
__le32 buf;
__le32 flaglen;
};
struct ring_desc_ex {
__le32 bufhigh;
__le32 buflow;
__le32 txvlan;
__le32 flaglen;
};
union ring_type {
struct ring_desc *orig;
struct ring_desc_ex *ex;
};
#define FLAG_MASK_V1 0xffff0000
#define FLAG_MASK_V2 0xffffc000
#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
#define NV_TX_LASTPACKET (1<<16)
#define NV_TX_RETRYERROR (1<<19)
#define NV_TX_RETRYCOUNT_MASK (0xF<<20)
#define NV_TX_FORCED_INTERRUPT (1<<24)
#define NV_TX_DEFERRED (1<<26)
#define NV_TX_CARRIERLOST (1<<27)
#define NV_TX_LATECOLLISION (1<<28)
#define NV_TX_UNDERFLOW (1<<29)
#define NV_TX_ERROR (1<<30)
#define NV_TX_VALID (1<<31)
#define NV_TX2_LASTPACKET (1<<29)
#define NV_TX2_RETRYERROR (1<<18)
#define NV_TX2_RETRYCOUNT_MASK (0xF<<19)
#define NV_TX2_FORCED_INTERRUPT (1<<30)
#define NV_TX2_DEFERRED (1<<25)
#define NV_TX2_CARRIERLOST (1<<26)
#define NV_TX2_LATECOLLISION (1<<27)
#define NV_TX2_UNDERFLOW (1<<28)
/* error and valid are the same for both */
#define NV_TX2_ERROR (1<<30)
#define NV_TX2_VALID (1<<31)
#define NV_TX2_TSO (1<<28)
#define NV_TX2_TSO_SHIFT 14
#define NV_TX2_TSO_MAX_SHIFT 14
#define NV_TX2_TSO_MAX_SIZE (1<<NV_TX2_TSO_MAX_SHIFT)
#define NV_TX2_CHECKSUM_L3 (1<<27)
#define NV_TX2_CHECKSUM_L4 (1<<26)
#define NV_TX3_VLAN_TAG_PRESENT (1<<18)
#define NV_RX_DESCRIPTORVALID (1<<16)
#define NV_RX_MISSEDFRAME (1<<17)
#define NV_RX_SUBSTRACT1 (1<<18)
#define NV_RX_ERROR1 (1<<23)
#define NV_RX_ERROR2 (1<<24)
#define NV_RX_ERROR3 (1<<25)
#define NV_RX_ERROR4 (1<<26)
#define NV_RX_CRCERR (1<<27)
#define NV_RX_OVERFLOW (1<<28)
#define NV_RX_FRAMINGERR (1<<29)
#define NV_RX_ERROR (1<<30)
#define NV_RX_AVAIL (1<<31)
#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)
#define NV_RX2_CHECKSUMMASK (0x1C000000)
#define NV_RX2_CHECKSUM_IP (0x10000000)
#define NV_RX2_CHECKSUM_IP_TCP (0x14000000)
#define NV_RX2_CHECKSUM_IP_UDP (0x18000000)
#define NV_RX2_DESCRIPTORVALID (1<<29)
#define NV_RX2_SUBSTRACT1 (1<<25)
#define NV_RX2_ERROR1 (1<<18)
#define NV_RX2_ERROR2 (1<<19)
#define NV_RX2_ERROR3 (1<<20)
#define NV_RX2_ERROR4 (1<<21)
#define NV_RX2_CRCERR (1<<22)
#define NV_RX2_OVERFLOW (1<<23)
#define NV_RX2_FRAMINGERR (1<<24)
/* error and avail are the same for both */
#define NV_RX2_ERROR (1<<30)
#define NV_RX2_AVAIL (1<<31)
#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)
#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
#define NV_RX3_VLAN_TAG_MASK (0x0000FFFF)
/* Miscelaneous hardware related defines: */
#define NV_PCI_REGSZ_VER1 0x270
#define NV_PCI_REGSZ_VER2 0x2d4
#define NV_PCI_REGSZ_VER3 0x604
#define NV_PCI_REGSZ_MAX 0x604
/* various timeout delays: all in usec */
#define NV_TXRX_RESET_DELAY 4
#define NV_TXSTOP_DELAY1 10
#define NV_TXSTOP_DELAY1MAX 500000
#define NV_TXSTOP_DELAY2 100
#define NV_RXSTOP_DELAY1 10
#define NV_RXSTOP_DELAY1MAX 500000
#define NV_RXSTOP_DELAY2 100
#define NV_SETUP5_DELAY 5
#define NV_SETUP5_DELAYMAX 50000
#define NV_POWERUP_DELAY 5
#define NV_POWERUP_DELAYMAX 5000
#define NV_MIIBUSY_DELAY 50
#define NV_MIIPHY_DELAY 10
#define NV_MIIPHY_DELAYMAX 10000
#define NV_MAC_RESET_DELAY 64
#define NV_WAKEUPPATTERNS 5
#define NV_WAKEUPMASKENTRIES 4
/* General driver defaults */
#define NV_WATCHDOG_TIMEO (5*HZ)
#define RX_RING_DEFAULT 512
#define TX_RING_DEFAULT 256
#define RX_RING_MIN 128
#define TX_RING_MIN 64
#define RING_MAX_DESC_VER_1 1024
#define RING_MAX_DESC_VER_2_3 16384
/* rx/tx mac addr + type + vlan + align + slack*/
#define NV_RX_HEADERS (64)
/* even more slack. */
#define NV_RX_ALLOC_PAD (64)
/* maximum mtu size */
#define NV_PKTLIMIT_1 ETH_DATA_LEN /* hard limit not known */
#define NV_PKTLIMIT_2 9100 /* Actual limit according to NVidia: 9202 */
#define OOM_REFILL (1+HZ/20)
#define POLL_WAIT (1+HZ/100)
#define LINK_TIMEOUT (3*HZ)
#define STATS_INTERVAL (10*HZ)
/*
* desc_ver values:
* The nic supports three different descriptor types:
* - DESC_VER_1: Original
* - DESC_VER_2: support for jumbo frames.
* - DESC_VER_3: 64-bit format.
*/
#define DESC_VER_1 1
#define DESC_VER_2 2
#define DESC_VER_3 3
/* PHY defines */
#define PHY_OUI_MARVELL 0x5043
#define PHY_OUI_CICADA 0x03f1
#define PHY_OUI_VITESSE 0x01c1
#define PHY_OUI_REALTEK 0x0732
#define PHY_OUI_REALTEK2 0x0020
#define PHYID1_OUI_MASK 0x03ff
#define PHYID1_OUI_SHFT 6
#define PHYID2_OUI_MASK 0xfc00
#define PHYID2_OUI_SHFT 10
#define PHYID2_MODEL_MASK 0x03f0
#define PHY_MODEL_REALTEK_8211 0x0110
#define PHY_REV_MASK 0x0001
#define PHY_REV_REALTEK_8211B 0x0000
#define PHY_REV_REALTEK_8211C 0x0001
#define PHY_MODEL_REALTEK_8201 0x0200
#define PHY_MODEL_MARVELL_E3016 0x0220
#define PHY_MARVELL_E3016_INITMASK 0x0300
#define PHY_CICADA_INIT1 0x0f000
#define PHY_CICADA_INIT2 0x0e00
#define PHY_CICADA_INIT3 0x01000
#define PHY_CICADA_INIT4 0x0200
#define PHY_CICADA_INIT5 0x0004
#define PHY_CICADA_INIT6 0x02000
#define PHY_VITESSE_INIT_REG1 0x1f
#define PHY_VITESSE_INIT_REG2 0x10
#define PHY_VITESSE_INIT_REG3 0x11
#define PHY_VITESSE_INIT_REG4 0x12
#define PHY_VITESSE_INIT_MSK1 0xc
#define PHY_VITESSE_INIT_MSK2 0x0180
#define PHY_VITESSE_INIT1 0x52b5
#define PHY_VITESSE_INIT2 0xaf8a
#define PHY_VITESSE_INIT3 0x8
#define PHY_VITESSE_INIT4 0x8f8a
#define PHY_VITESSE_INIT5 0xaf86
#define PHY_VITESSE_INIT6 0x8f86
#define PHY_VITESSE_INIT7 0xaf82
#define PHY_VITESSE_INIT8 0x0100
#define PHY_VITESSE_INIT9 0x8f82
#define PHY_VITESSE_INIT10 0x0
#define PHY_REALTEK_INIT_REG1 0x1f
#define PHY_REALTEK_INIT_REG2 0x19
#define PHY_REALTEK_INIT_REG3 0x13
#define PHY_REALTEK_INIT_REG4 0x14
#define PHY_REALTEK_INIT_REG5 0x18
#define PHY_REALTEK_INIT_REG6 0x11
#define PHY_REALTEK_INIT_REG7 0x01
#define PHY_REALTEK_INIT1 0x0000
#define PHY_REALTEK_INIT2 0x8e00
#define PHY_REALTEK_INIT3 0x0001
#define PHY_REALTEK_INIT4 0xad17
#define PHY_REALTEK_INIT5 0xfb54
#define PHY_REALTEK_INIT6 0xf5c7
#define PHY_REALTEK_INIT7 0x1000
#define PHY_REALTEK_INIT8 0x0003
#define PHY_REALTEK_INIT9 0x0008
#define PHY_REALTEK_INIT10 0x0005
#define PHY_REALTEK_INIT11 0x0200
#define PHY_REALTEK_INIT_MSK1 0x0003
#define PHY_GIGABIT 0x0100
#define PHY_TIMEOUT 0x1
#define PHY_ERROR 0x2
#define PHY_100 0x1
#define PHY_1000 0x2
#define PHY_HALF 0x100
#define NV_PAUSEFRAME_RX_CAPABLE 0x0001
#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
#define NV_PAUSEFRAME_RX_ENABLE 0x0004
#define NV_PAUSEFRAME_TX_ENABLE 0x0008
#define NV_PAUSEFRAME_RX_REQ 0x0010
#define NV_PAUSEFRAME_TX_REQ 0x0020
#define NV_PAUSEFRAME_AUTONEG 0x0040
/* MSI/MSI-X defines */
#define NV_MSI_X_MAX_VECTORS 8
#define NV_MSI_X_VECTORS_MASK 0x000f
#define NV_MSI_CAPABLE 0x0010
#define NV_MSI_X_CAPABLE 0x0020
#define NV_MSI_ENABLED 0x0040
#define NV_MSI_X_ENABLED 0x0080
#define NV_MSI_X_VECTOR_ALL 0x0
#define NV_MSI_X_VECTOR_RX 0x0
#define NV_MSI_X_VECTOR_TX 0x1
#define NV_MSI_X_VECTOR_OTHER 0x2
#define NV_MSI_PRIV_OFFSET 0x68
#define NV_MSI_PRIV_VALUE 0xffffffff
#define NV_RESTART_TX 0x1
#define NV_RESTART_RX 0x2
#define NV_TX_LIMIT_COUNT 16
#define NV_DYNAMIC_THRESHOLD 4
#define NV_DYNAMIC_MAX_QUIET_COUNT 2048
/* statistics */
struct nv_ethtool_str {
char name[ETH_GSTRING_LEN];
};
static const struct nv_ethtool_str nv_estats_str[] = {
{ "tx_bytes" },
{ "tx_zero_rexmt" },
{ "tx_one_rexmt" },
{ "tx_many_rexmt" },
{ "tx_late_collision" },
{ "tx_fifo_errors" },
{ "tx_carrier_errors" },
{ "tx_excess_deferral" },
{ "tx_retry_error" },
{ "rx_frame_error" },
{ "rx_extra_byte" },
{ "rx_late_collision" },
{ "rx_runt" },
{ "rx_frame_too_long" },
{ "rx_over_errors" },
{ "rx_crc_errors" },
{ "rx_frame_align_error" },
{ "rx_length_error" },
{ "rx_unicast" },
{ "rx_multicast" },
{ "rx_broadcast" },
{ "rx_packets" },
{ "rx_errors_total" },
{ "tx_errors_total" },
/* version 2 stats */
{ "tx_deferral" },
{ "tx_packets" },
{ "rx_bytes" },
{ "tx_pause" },
{ "rx_pause" },
{ "rx_drop_frame" },
/* version 3 stats */
{ "tx_unicast" },
{ "tx_multicast" },
{ "tx_broadcast" }
};
struct nv_ethtool_stats {
u64 tx_bytes;
u64 tx_zero_rexmt;
u64 tx_one_rexmt;
u64 tx_many_rexmt;
u64 tx_late_collision;
u64 tx_fifo_errors;
u64 tx_carrier_errors;
u64 tx_excess_deferral;
u64 tx_retry_error;
u64 rx_frame_error;
u64 rx_extra_byte;
u64 rx_late_collision;
u64 rx_runt;
u64 rx_frame_too_long;
u64 rx_over_errors;
u64 rx_crc_errors;
u64 rx_frame_align_error;
u64 rx_length_error;
u64 rx_unicast;
u64 rx_multicast;
u64 rx_broadcast;
u64 rx_packets;
u64 rx_errors_total;
u64 tx_errors_total;
/* version 2 stats */
u64 tx_deferral;
u64 tx_packets;
u64 rx_bytes;
u64 tx_pause;
u64 rx_pause;
u64 rx_drop_frame;
/* version 3 stats */
u64 tx_unicast;
u64 tx_multicast;
u64 tx_broadcast;
};
#define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
#define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
#define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
/* diagnostics */
#define NV_TEST_COUNT_BASE 3
#define NV_TEST_COUNT_EXTENDED 4
static const struct nv_ethtool_str nv_etests_str[] = {
{ "link (online/offline)" },
{ "register (offline) " },
{ "interrupt (offline) " },
{ "loopback (offline) " }
};
struct register_test {
__u32 reg;
__u32 mask;
};
static const struct register_test nv_registers_test[] = {
{ NvRegUnknownSetupReg6, 0x01 },
{ NvRegMisc1, 0x03c },
{ NvRegOffloadConfig, 0x03ff },
{ NvRegMulticastAddrA, 0xffffffff },
{ NvRegTxWatermark, 0x0ff },
{ NvRegWakeUpFlags, 0x07777 },
{ 0, 0 }
};
struct nv_skb_map {
struct sk_buff *skb;
dma_addr_t dma;
unsigned int dma_len:31;
unsigned int dma_single:1;
struct ring_desc_ex *first_tx_desc;
struct nv_skb_map *next_tx_ctx;
};
/*
* SMP locking:
* All hardware access under netdev_priv(dev)->lock, except the performance
* critical parts:
* - rx is (pseudo-) lockless: it relies on the single-threading provided
* by the arch code for interrupts.
* - tx setup is lockless: it relies on netif_tx_lock. Actual submission
* needs netdev_priv(dev)->lock :-(
* - set_multicast_list: preparation lockless, relies on netif_tx_lock.
*/
/* in dev: base, irq */
struct fe_priv {
spinlock_t lock;
struct net_device *dev;
struct napi_struct napi;
/* General data:
* Locking: spin_lock(&np->lock); */
struct nv_ethtool_stats estats;
int in_shutdown;
u32 linkspeed;
int duplex;
int autoneg;
int fixed_mode;
int phyaddr;
int wolenabled;
unsigned int phy_oui;
unsigned int phy_model;
unsigned int phy_rev;
u16 gigabit;
int intr_test;
int recover_error;
int quiet_count;
/* General data: RO fields */
dma_addr_t ring_addr;
struct pci_dev *pci_dev;
u32 orig_mac[2];
u32 events;
u32 irqmask;
u32 desc_ver;
u32 txrxctl_bits;
u32 vlanctl_bits;
u32 driver_data;
u32 device_id;
u32 register_size;
int rx_csum;
u32 mac_in_use;
int mgmt_version;
int mgmt_sema;
void __iomem *base;
/* rx specific fields.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
*/
union ring_type get_rx, put_rx, first_rx, last_rx;
struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
struct nv_skb_map *rx_skb;
union ring_type rx_ring;
unsigned int rx_buf_sz;
unsigned int pkt_limit;
struct timer_list oom_kick;
struct timer_list nic_poll;
struct timer_list stats_poll;
u32 nic_poll_irq;
int rx_ring_size;
/* media detection workaround.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
*/
int need_linktimer;
unsigned long link_timeout;
/*
* tx specific fields.
*/
union ring_type get_tx, put_tx, first_tx, last_tx;
struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
struct nv_skb_map *tx_skb;
union ring_type tx_ring;
u32 tx_flags;
int tx_ring_size;
int tx_limit;
u32 tx_pkts_in_progress;
struct nv_skb_map *tx_change_owner;
struct nv_skb_map *tx_end_flip;
int tx_stop;
/* vlan fields */
struct vlan_group *vlangrp;
/* msi/msi-x fields */
u32 msi_flags;
struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
/* flow control */
u32 pause_flags;
/* power saved state */
u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
/* for different msi-x irq type */
char name_rx[IFNAMSIZ + 3]; /* -rx */
char name_tx[IFNAMSIZ + 3]; /* -tx */
char name_other[IFNAMSIZ + 6]; /* -other */
};
/*
* Maximum number of loops until we assume that a bit in the irq mask
* is stuck. Overridable with module param.
*/
static int max_interrupt_work = 4;
/*
* Optimization can be either throuput mode or cpu mode
*
* Throughput Mode: Every tx and rx packet will generate an interrupt.
* CPU Mode: Interrupts are controlled by a timer.
*/
enum {
NV_OPTIMIZATION_MODE_THROUGHPUT,
NV_OPTIMIZATION_MODE_CPU,
NV_OPTIMIZATION_MODE_DYNAMIC
};
static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
/*
* Poll interval for timer irq
*
* This interval determines how frequent an interrupt is generated.
* The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
* Min = 0, and Max = 65535
*/
static int poll_interval = -1;
/*
* MSI interrupts
*/
enum {
NV_MSI_INT_DISABLED,
NV_MSI_INT_ENABLED
};
static int msi = NV_MSI_INT_ENABLED;
/*
* MSIX interrupts
*/
enum {
NV_MSIX_INT_DISABLED,
NV_MSIX_INT_ENABLED
};
static int msix = NV_MSIX_INT_ENABLED;
/*
* DMA 64bit
*/
enum {
NV_DMA_64BIT_DISABLED,
NV_DMA_64BIT_ENABLED
};
static int dma_64bit = NV_DMA_64BIT_ENABLED;
/*
* Crossover Detection
* Realtek 8201 phy + some OEM boards do not work properly.
*/
enum {
NV_CROSSOVER_DETECTION_DISABLED,
NV_CROSSOVER_DETECTION_ENABLED
};
static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
/*
* Power down phy when interface is down (persists through reboot;
* older Linux and other OSes may not power it up again)
*/
static int phy_power_down;
static inline struct fe_priv *get_nvpriv(struct net_device *dev)
{
return netdev_priv(dev);
}
static inline u8 __iomem *get_hwbase(struct net_device *dev)
{
return ((struct fe_priv *)netdev_priv(dev))->base;
}
static inline void pci_push(u8 __iomem *base)
{
/* force out pending posted writes */
readl(base);
}
static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
{
return le32_to_cpu(prd->flaglen)
& ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
}
static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
{
return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
}
static bool nv_optimized(struct fe_priv *np)
{
if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
return false;
return true;
}
static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
int delay, int delaymax)
{
u8 __iomem *base = get_hwbase(dev);
pci_push(base);
do {
udelay(delay);
delaymax -= delay;
if (delaymax < 0)
return 1;
} while ((readl(base + offset) & mask) != target);
return 0;
}
#define NV_SETUP_RX_RING 0x01
#define NV_SETUP_TX_RING 0x02
static inline u32 dma_low(dma_addr_t addr)
{
return addr;
}
static inline u32 dma_high(dma_addr_t addr)
{
return addr>>31>>1; /* 0 if 32bit, shift down by 32 if 64bit */
}
static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
{
struct fe_priv *np = get_nvpriv(dev);
u8 __iomem *base = get_hwbase(dev);
if (!nv_optimized(np)) {
if (rxtx_flags & NV_SETUP_RX_RING)
writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
if (rxtx_flags & NV_SETUP_TX_RING)
writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
} else {
if (rxtx_flags & NV_SETUP_RX_RING) {
writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
}
if (rxtx_flags & NV_SETUP_TX_RING) {
writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
}
}
}
static void free_rings(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
if (!nv_optimized(np)) {
if (np->rx_ring.orig)
pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
np->rx_ring.orig, np->ring_addr);
} else {
if (np->rx_ring.ex)
pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
np->rx_ring.ex, np->ring_addr);
}
kfree(np->rx_skb);
kfree(np->tx_skb);
}
static int using_multi_irqs(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
((np->msi_flags & NV_MSI_X_ENABLED) &&
((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
return 0;
else
return 1;
}
static void nv_txrx_gate(struct net_device *dev, bool gate)
{
struct fe_priv *np = get_nvpriv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 powerstate;
if (!np->mac_in_use &&
(np->driver_data & DEV_HAS_POWER_CNTRL)) {
powerstate = readl(base + NvRegPowerState2);
if (gate)
powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
else
powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
writel(powerstate, base + NvRegPowerState2);
}
}
static void nv_enable_irq(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
if (!using_multi_irqs(dev)) {
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
enable_irq(np->pci_dev->irq);
} else {
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
}
}
static void nv_disable_irq(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
if (!using_multi_irqs(dev)) {
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
disable_irq(np->pci_dev->irq);
} else {
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
}
}
/* In MSIX mode, a write to irqmask behaves as XOR */
static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
{
u8 __iomem *base = get_hwbase(dev);
writel(mask, base + NvRegIrqMask);
}
static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
{
struct fe_priv *np = get_nvpriv(dev);
u8 __iomem *base = get_hwbase(dev);
if (np->msi_flags & NV_MSI_X_ENABLED) {
writel(mask, base + NvRegIrqMask);
} else {
if (np->msi_flags & NV_MSI_ENABLED)
writel(0, base + NvRegMSIIrqMask);
writel(0, base + NvRegIrqMask);
}
}
static void nv_napi_enable(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
napi_enable(&np->napi);
}
static void nv_napi_disable(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
napi_disable(&np->napi);
}
#define MII_READ (-1)
/* mii_rw: read/write a register on the PHY.
*
* Caller must guarantee serialization
*/
static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
{
u8 __iomem *base = get_hwbase(dev);
u32 reg;
int retval;
writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
reg = readl(base + NvRegMIIControl);
if (reg & NVREG_MIICTL_INUSE) {
writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
udelay(NV_MIIBUSY_DELAY);
}
reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
if (value != MII_READ) {
writel(value, base + NvRegMIIData);
reg |= NVREG_MIICTL_WRITE;
}
writel(reg, base + NvRegMIIControl);
if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
retval = -1;
} else if (value != MII_READ) {
/* it was a write operation - fewer failures are detectable */
retval = 0;
} else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
retval = -1;
} else {
retval = readl(base + NvRegMIIData);
}
return retval;
}
static int phy_reset(struct net_device *dev, u32 bmcr_setup)
{
struct fe_priv *np = netdev_priv(dev);
u32 miicontrol;
unsigned int tries = 0;
miicontrol = BMCR_RESET | bmcr_setup;
if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
return -1;
/* wait for 500ms */
msleep(500);
/* must wait till reset is deasserted */
while (miicontrol & BMCR_RESET) {
usleep_range(10000, 20000);
miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
/* FIXME: 100 tries seem excessive */
if (tries++ > 100)
return -1;
}
return 0;
}
static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
{
static const struct {
int reg;
int init;
} ri[] = {
{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
{ PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
{ PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
{ PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
{ PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
{ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
};
int i;
for (i = 0; i < ARRAY_SIZE(ri); i++) {
if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
return PHY_ERROR;
}
return 0;
}
static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
{
u32 reg;
u8 __iomem *base = get_hwbase(dev);
u32 powerstate = readl(base + NvRegPowerState2);
/* need to perform hw phy reset */
powerstate |= NVREG_POWERSTATE2_PHY_RESET;
writel(powerstate, base + NvRegPowerState2);
msleep(25);
powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
writel(powerstate, base + NvRegPowerState2);
msleep(25);
reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
reg |= PHY_REALTEK_INIT9;
if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
return PHY_ERROR;
reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
if (!(reg & PHY_REALTEK_INIT11)) {
reg |= PHY_REALTEK_INIT11;
if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
return PHY_ERROR;
}
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
return PHY_ERROR;
return 0;
}
static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
{
u32 phy_reserved;
if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG6, MII_READ);
phy_reserved |= PHY_REALTEK_INIT7;
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG6, phy_reserved))
return PHY_ERROR;
}
return 0;
}
static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
{
u32 phy_reserved;
if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG2, MII_READ);
phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
phy_reserved |= PHY_REALTEK_INIT3;
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG2, phy_reserved))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
return PHY_ERROR;
}
return 0;
}
static int init_cicada(struct net_device *dev, struct fe_priv *np,
u32 phyinterface)
{
u32 phy_reserved;
if (phyinterface & PHY_RGMII) {
phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
phy_reserved |= PHY_CICADA_INIT5;
if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
return PHY_ERROR;
}
phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
phy_reserved |= PHY_CICADA_INIT6;
if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
return PHY_ERROR;
return 0;
}
static int init_vitesse(struct net_device *dev, struct fe_priv *np)
{
u32 phy_reserved;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG4, MII_READ);
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG3, MII_READ);
phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
phy_reserved |= PHY_VITESSE_INIT3;
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG4, MII_READ);
phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
phy_reserved |= PHY_VITESSE_INIT3;
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG3, MII_READ);
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG4, MII_READ);
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
return PHY_ERROR;
phy_reserved = mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG3, MII_READ);
phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
phy_reserved |= PHY_VITESSE_INIT8;
if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
return PHY_ERROR;
if (mii_rw(dev, np->phyaddr,
PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
return PHY_ERROR;
return 0;
}
static int phy_init(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 phyinterface;
u32 mii_status, mii_control, mii_control_1000, reg;
/* phy errata for E3016 phy */
if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
reg &= ~PHY_MARVELL_E3016_INITMASK;
if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
netdev_info(dev, "%s: phy write to errata reg failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
}
if (np->phy_oui == PHY_OUI_REALTEK) {
if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
np->phy_rev == PHY_REV_REALTEK_8211B) {
if (init_realtek_8211b(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
np->phy_rev == PHY_REV_REALTEK_8211C) {
if (init_realtek_8211c(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
if (init_realtek_8201(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
}
}
/* set advertise register */
reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
ADVERTISE_100HALF | ADVERTISE_100FULL |
ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
netdev_info(dev, "%s: phy write to advertise failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
/* get phy interface type */
phyinterface = readl(base + NvRegPhyInterface);
/* see if gigabit phy */
mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
if (mii_status & PHY_GIGABIT) {
np->gigabit = PHY_GIGABIT;
mii_control_1000 = mii_rw(dev, np->phyaddr,
MII_CTRL1000, MII_READ);
mii_control_1000 &= ~ADVERTISE_1000HALF;
if (phyinterface & PHY_RGMII)
mii_control_1000 |= ADVERTISE_1000FULL;
else
mii_control_1000 &= ~ADVERTISE_1000FULL;
if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else
np->gigabit = 0;
mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
mii_control |= BMCR_ANENABLE;
if (np->phy_oui == PHY_OUI_REALTEK &&
np->phy_model == PHY_MODEL_REALTEK_8211 &&
np->phy_rev == PHY_REV_REALTEK_8211C) {
/* start autoneg since we already performed hw reset above */
mii_control |= BMCR_ANRESTART;
if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else {
/* reset the phy
* (certain phys need bmcr to be setup with reset)
*/
if (phy_reset(dev, mii_control)) {
netdev_info(dev, "%s: phy reset failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
}
/* phy vendor specific configuration */
if ((np->phy_oui == PHY_OUI_CICADA)) {
if (init_cicada(dev, np, phyinterface)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else if (np->phy_oui == PHY_OUI_VITESSE) {
if (init_vitesse(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else if (np->phy_oui == PHY_OUI_REALTEK) {
if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
np->phy_rev == PHY_REV_REALTEK_8211B) {
/* reset could have cleared these out, set them back */
if (init_realtek_8211b(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
} else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
if (init_realtek_8201(dev, np) ||
init_realtek_8201_cross(dev, np)) {
netdev_info(dev, "%s: phy init failed\n",
pci_name(np->pci_dev));
return PHY_ERROR;
}
}
}
/* some phys clear out pause advertisment on reset, set it back */
mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
/* restart auto negotiation, power down phy */
mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
if (phy_power_down)
mii_control |= BMCR_PDOWN;
if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
return PHY_ERROR;
return 0;
}
static void nv_start_rx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 rx_ctrl = readl(base + NvRegReceiverControl);
/* Already running? Stop it. */
if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
rx_ctrl &= ~NVREG_RCVCTL_START;
writel(rx_ctrl, base + NvRegReceiverControl);
pci_push(base);
}
writel(np->linkspeed, base + NvRegLinkSpeed);
pci_push(base);
rx_ctrl |= NVREG_RCVCTL_START;
if (np->mac_in_use)
rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
writel(rx_ctrl, base + NvRegReceiverControl);
pci_push(base);
}
static void nv_stop_rx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 rx_ctrl = readl(base + NvRegReceiverControl);
if (!np->mac_in_use)
rx_ctrl &= ~NVREG_RCVCTL_START;
else
rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
writel(rx_ctrl, base + NvRegReceiverControl);
if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
netdev_info(dev, "%s: ReceiverStatus remained busy\n",
__func__);
udelay(NV_RXSTOP_DELAY2);
if (!np->mac_in_use)
writel(0, base + NvRegLinkSpeed);
}
static void nv_start_tx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 tx_ctrl = readl(base + NvRegTransmitterControl);
tx_ctrl |= NVREG_XMITCTL_START;
if (np->mac_in_use)
tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
writel(tx_ctrl, base + NvRegTransmitterControl);
pci_push(base);
}
static void nv_stop_tx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 tx_ctrl = readl(base + NvRegTransmitterControl);
if (!np->mac_in_use)
tx_ctrl &= ~NVREG_XMITCTL_START;
else
tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
writel(tx_ctrl, base + NvRegTransmitterControl);
if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
netdev_info(dev, "%s: TransmitterStatus remained busy\n",
__func__);
udelay(NV_TXSTOP_DELAY2);
if (!np->mac_in_use)
writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
base + NvRegTransmitPoll);
}
static void nv_start_rxtx(struct net_device *dev)
{
nv_start_rx(dev);
nv_start_tx(dev);
}
static void nv_stop_rxtx(struct net_device *dev)
{
nv_stop_rx(dev);
nv_stop_tx(dev);
}
static void nv_txrx_reset(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
pci_push(base);
udelay(NV_TXRX_RESET_DELAY);
writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
pci_push(base);
}
static void nv_mac_reset(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 temp1, temp2, temp3;
writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
pci_push(base);
/* save registers since they will be cleared on reset */
temp1 = readl(base + NvRegMacAddrA);
temp2 = readl(base + NvRegMacAddrB);
temp3 = readl(base + NvRegTransmitPoll);
writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
pci_push(base);
udelay(NV_MAC_RESET_DELAY);
writel(0, base + NvRegMacReset);
pci_push(base);
udelay(NV_MAC_RESET_DELAY);
/* restore saved registers */
writel(temp1, base + NvRegMacAddrA);
writel(temp2, base + NvRegMacAddrB);
writel(temp3, base + NvRegTransmitPoll);
writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
pci_push(base);
}
static void nv_get_hw_stats(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
np->estats.tx_bytes += readl(base + NvRegTxCnt);
np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
np->estats.rx_runt += readl(base + NvRegRxRunt);
np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
np->estats.rx_length_error += readl(base + NvRegRxLenErr);
np->estats.rx_unicast += readl(base + NvRegRxUnicast);
np->estats.rx_multicast += readl(base + NvRegRxMulticast);
np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
np->estats.rx_packets =
np->estats.rx_unicast +
np->estats.rx_multicast +
np->estats.rx_broadcast;
np->estats.rx_errors_total =
np->estats.rx_crc_errors +
np->estats.rx_over_errors +
np->estats.rx_frame_error +
(np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
np->estats.rx_late_collision +
np->estats.rx_runt +
np->estats.rx_frame_too_long;
np->estats.tx_errors_total =
np->estats.tx_late_collision +
np->estats.tx_fifo_errors +
np->estats.tx_carrier_errors +
np->estats.tx_excess_deferral +
np->estats.tx_retry_error;
if (np->driver_data & DEV_HAS_STATISTICS_V2) {
np->estats.tx_deferral += readl(base + NvRegTxDef);
np->estats.tx_packets += readl(base + NvRegTxFrame);
np->estats.rx_bytes += readl(base + NvRegRxCnt);
np->estats.tx_pause += readl(base + NvRegTxPause);
np->estats.rx_pause += readl(base + NvRegRxPause);
np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
}
if (np->driver_data & DEV_HAS_STATISTICS_V3) {
np->estats.tx_unicast += readl(base + NvRegTxUnicast);
np->estats.tx_multicast += readl(base + NvRegTxMulticast);
np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
}
}
/*
* nv_get_stats: dev->get_stats function
* Get latest stats value from the nic.
* Called with read_lock(&dev_base_lock) held for read -
* only synchronized against unregister_netdevice.
*/
static struct net_device_stats *nv_get_stats(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
/* If the nic supports hw counters then retrieve latest values */
if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3)) {
nv_get_hw_stats(dev);
/* copy to net_device stats */
dev->stats.tx_bytes = np->estats.tx_bytes;
dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
dev->stats.rx_over_errors = np->estats.rx_over_errors;
dev->stats.rx_errors = np->estats.rx_errors_total;
dev->stats.tx_errors = np->estats.tx_errors_total;
}
return &dev->stats;
}
/*
* nv_alloc_rx: fill rx ring entries.
* Return 1 if the allocations for the skbs failed and the
* rx engine is without Available descriptors
*/
static int nv_alloc_rx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
struct ring_desc *less_rx;
less_rx = np->get_rx.orig;
if (less_rx-- == np->first_rx.orig)
less_rx = np->last_rx.orig;
while (np->put_rx.orig != less_rx) {
struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
if (skb) {
np->put_rx_ctx->skb = skb;
np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
skb->data,
skb_tailroom(skb),
PCI_DMA_FROMDEVICE);
np->put_rx_ctx->dma_len = skb_tailroom(skb);
np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
wmb();
np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
np->put_rx.orig = np->first_rx.orig;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
} else
return 1;
}
return 0;
}
static int nv_alloc_rx_optimized(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
struct ring_desc_ex *less_rx;
less_rx = np->get_rx.ex;
if (less_rx-- == np->first_rx.ex)
less_rx = np->last_rx.ex;
while (np->put_rx.ex != less_rx) {
struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
if (skb) {
np->put_rx_ctx->skb = skb;
np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
skb->data,
skb_tailroom(skb),
PCI_DMA_FROMDEVICE);
np->put_rx_ctx->dma_len = skb_tailroom(skb);
np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
wmb();
np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
np->put_rx.ex = np->first_rx.ex;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
} else
return 1;
}
return 0;
}
/* If rx bufs are exhausted called after 50ms to attempt to refresh */
static void nv_do_rx_refill(unsigned long data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
/* Just reschedule NAPI rx processing */
napi_schedule(&np->napi);
}
static void nv_init_rx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
int i;
np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
if (!nv_optimized(np))
np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
else
np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
for (i = 0; i < np->rx_ring_size; i++) {
if (!nv_optimized(np)) {
np->rx_ring.orig[i].flaglen = 0;
np->rx_ring.orig[i].buf = 0;
} else {
np->rx_ring.ex[i].flaglen = 0;
np->rx_ring.ex[i].txvlan = 0;
np->rx_ring.ex[i].bufhigh = 0;
np->rx_ring.ex[i].buflow = 0;
}
np->rx_skb[i].skb = NULL;
np->rx_skb[i].dma = 0;
}
}
static void nv_init_tx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
int i;
np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
if (!nv_optimized(np))
np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
else
np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
np->tx_pkts_in_progress = 0;
np->tx_change_owner = NULL;
np->tx_end_flip = NULL;
np->tx_stop = 0;
for (i = 0; i < np->tx_ring_size; i++) {
if (!nv_optimized(np)) {
np->tx_ring.orig[i].flaglen = 0;
np->tx_ring.orig[i].buf = 0;
} else {
np->tx_ring.ex[i].flaglen = 0;
np->tx_ring.ex[i].txvlan = 0;
np->tx_ring.ex[i].bufhigh = 0;
np->tx_ring.ex[i].buflow = 0;
}
np->tx_skb[i].skb = NULL;
np->tx_skb[i].dma = 0;
np->tx_skb[i].dma_len = 0;
np->tx_skb[i].dma_single = 0;
np->tx_skb[i].first_tx_desc = NULL;
np->tx_skb[i].next_tx_ctx = NULL;
}
}
static int nv_init_ring(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
nv_init_tx(dev);
nv_init_rx(dev);
if (!nv_optimized(np))
return nv_alloc_rx(dev);
else
return nv_alloc_rx_optimized(dev);
}
static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
{
if (tx_skb->dma) {
if (tx_skb->dma_single)
pci_unmap_single(np->pci_dev, tx_skb->dma,
tx_skb->dma_len,
PCI_DMA_TODEVICE);
else
pci_unmap_page(np->pci_dev, tx_skb->dma,
tx_skb->dma_len,
PCI_DMA_TODEVICE);
tx_skb->dma = 0;
}
}
static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
{
nv_unmap_txskb(np, tx_skb);
if (tx_skb->skb) {
dev_kfree_skb_any(tx_skb->skb);
tx_skb->skb = NULL;
return 1;
}
return 0;
}
static void nv_drain_tx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
unsigned int i;
for (i = 0; i < np->tx_ring_size; i++) {
if (!nv_optimized(np)) {
np->tx_ring.orig[i].flaglen = 0;
np->tx_ring.orig[i].buf = 0;
} else {
np->tx_ring.ex[i].flaglen = 0;
np->tx_ring.ex[i].txvlan = 0;
np->tx_ring.ex[i].bufhigh = 0;
np->tx_ring.ex[i].buflow = 0;
}
if (nv_release_txskb(np, &np->tx_skb[i]))
dev->stats.tx_dropped++;
np->tx_skb[i].dma = 0;
np->tx_skb[i].dma_len = 0;
np->tx_skb[i].dma_single = 0;
np->tx_skb[i].first_tx_desc = NULL;
np->tx_skb[i].next_tx_ctx = NULL;
}
np->tx_pkts_in_progress = 0;
np->tx_change_owner = NULL;
np->tx_end_flip = NULL;
}
static void nv_drain_rx(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
int i;
for (i = 0; i < np->rx_ring_size; i++) {
if (!nv_optimized(np)) {
np->rx_ring.orig[i].flaglen = 0;
np->rx_ring.orig[i].buf = 0;
} else {
np->rx_ring.ex[i].flaglen = 0;
np->rx_ring.ex[i].txvlan = 0;
np->rx_ring.ex[i].bufhigh = 0;
np->rx_ring.ex[i].buflow = 0;
}
wmb();
if (np->rx_skb[i].skb) {
pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
(skb_end_pointer(np->rx_skb[i].skb) -
np->rx_skb[i].skb->data),
PCI_DMA_FROMDEVICE);
dev_kfree_skb(np->rx_skb[i].skb);
np->rx_skb[i].skb = NULL;
}
}
}
static void nv_drain_rxtx(struct net_device *dev)
{
nv_drain_tx(dev);
nv_drain_rx(dev);
}
static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
{
return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
}
static void nv_legacybackoff_reseed(struct net_device *dev)
{
u8 __iomem *base = get_hwbase(dev);
u32 reg;
u32 low;
int tx_status = 0;
reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
get_random_bytes(&low, sizeof(low));
reg |= low & NVREG_SLOTTIME_MASK;
/* Need to stop tx before change takes effect.
* Caller has already gained np->lock.
*/
tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
if (tx_status)
nv_stop_tx(dev);
nv_stop_rx(dev);
writel(reg, base + NvRegSlotTime);
if (tx_status)
nv_start_tx(dev);
nv_start_rx(dev);
}
/* Gear Backoff Seeds */
#define BACKOFF_SEEDSET_ROWS 8
#define BACKOFF_SEEDSET_LFSRS 15
/* Known Good seed sets */
static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
{266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
{266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
{366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800, 84},
{466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
static void nv_gear_backoff_reseed(struct net_device *dev)
{
u8 __iomem *base = get_hwbase(dev);
u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
u32 temp, seedset, combinedSeed;
int i;
/* Setup seed for free running LFSR */
/* We are going to read the time stamp counter 3 times
and swizzle bits around to increase randomness */
get_random_bytes(&miniseed1, sizeof(miniseed1));
miniseed1 &= 0x0fff;
if (miniseed1 == 0)
miniseed1 = 0xabc;
get_random_bytes(&miniseed2, sizeof(miniseed2));
miniseed2 &= 0x0fff;
if (miniseed2 == 0)
miniseed2 = 0xabc;
miniseed2_reversed =
((miniseed2 & 0xF00) >> 8) |
(miniseed2 & 0x0F0) |
((miniseed2 & 0x00F) << 8);
get_random_bytes(&miniseed3, sizeof(miniseed3));
miniseed3 &= 0x0fff;
if (miniseed3 == 0)
miniseed3 = 0xabc;
miniseed3_reversed =
((miniseed3 & 0xF00) >> 8) |
(miniseed3 & 0x0F0) |
((miniseed3 & 0x00F) << 8);
combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
(miniseed2 ^ miniseed3_reversed);
/* Seeds can not be zero */
if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
combinedSeed |= 0x08;
if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
combinedSeed |= 0x8000;
/* No need to disable tx here */
temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
writel(temp, base + NvRegBackOffControl);
/* Setup seeds for all gear LFSRs. */
get_random_bytes(&seedset, sizeof(seedset));
seedset = seedset % BACKOFF_SEEDSET_ROWS;
for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
temp |= main_seedset[seedset][i-1] & 0x3ff;
temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
writel(temp, base + NvRegBackOffControl);
}
}
/*
* nv_start_xmit: dev->hard_start_xmit function
* Called with netif_tx_lock held.
*/
static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u32 tx_flags = 0;
u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
unsigned int fragments = skb_shinfo(skb)->nr_frags;
unsigned int i;
u32 offset = 0;
u32 bcnt;
u32 size = skb_headlen(skb);
u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
u32 empty_slots;
struct ring_desc *put_tx;
struct ring_desc *start_tx;
struct ring_desc *prev_tx;
struct nv_skb_map *prev_tx_ctx;
unsigned long flags;
/* add fragments to entries count */
for (i = 0; i < fragments; i++) {
entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
}
spin_lock_irqsave(&np->lock, flags);
empty_slots = nv_get_empty_tx_slots(np);
if (unlikely(empty_slots <= entries)) {
netif_stop_queue(dev);
np->tx_stop = 1;
spin_unlock_irqrestore(&np->lock, flags);
return NETDEV_TX_BUSY;
}
spin_unlock_irqrestore(&np->lock, flags);
start_tx = put_tx = np->put_tx.orig;
/* setup the header buffer */
do {
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
PCI_DMA_TODEVICE);
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 1;
put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
tx_flags = np->tx_flags;
offset += bcnt;
size -= bcnt;
if (unlikely(put_tx++ == np->last_tx.orig))
put_tx = np->first_tx.orig;
if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
np->put_tx_ctx = np->first_tx_ctx;
} while (size);
/* setup the fragments */
for (i = 0; i < fragments; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
u32 size = frag->size;
offset = 0;
do {
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
PCI_DMA_TODEVICE);
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 0;
put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
offset += bcnt;
size -= bcnt;
if (unlikely(put_tx++ == np->last_tx.orig))
put_tx = np->first_tx.orig;
if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
np->put_tx_ctx = np->first_tx_ctx;
} while (size);
}
/* set last fragment flag */
prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
/* save skb in this slot's context area */
prev_tx_ctx->skb = skb;
if (skb_is_gso(skb))
tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
else
tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
spin_lock_irqsave(&np->lock, flags);
/* set tx flags */
start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
np->put_tx.orig = put_tx;
spin_unlock_irqrestore(&np->lock, flags);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
return NETDEV_TX_OK;
}
static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u32 tx_flags = 0;
u32 tx_flags_extra;
unsigned int fragments = skb_shinfo(skb)->nr_frags;
unsigned int i;
u32 offset = 0;
u32 bcnt;
u32 size = skb_headlen(skb);
u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
u32 empty_slots;
struct ring_desc_ex *put_tx;
struct ring_desc_ex *start_tx;
struct ring_desc_ex *prev_tx;
struct nv_skb_map *prev_tx_ctx;
struct nv_skb_map *start_tx_ctx;
unsigned long flags;
/* add fragments to entries count */
for (i = 0; i < fragments; i++) {
entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
}
spin_lock_irqsave(&np->lock, flags);
empty_slots = nv_get_empty_tx_slots(np);
if (unlikely(empty_slots <= entries)) {
netif_stop_queue(dev);
np->tx_stop = 1;
spin_unlock_irqrestore(&np->lock, flags);
return NETDEV_TX_BUSY;
}
spin_unlock_irqrestore(&np->lock, flags);
start_tx = put_tx = np->put_tx.ex;
start_tx_ctx = np->put_tx_ctx;
/* setup the header buffer */
do {
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
PCI_DMA_TODEVICE);
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 1;
put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
tx_flags = NV_TX2_VALID;
offset += bcnt;
size -= bcnt;
if (unlikely(put_tx++ == np->last_tx.ex))
put_tx = np->first_tx.ex;
if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
np->put_tx_ctx = np->first_tx_ctx;
} while (size);
/* setup the fragments */
for (i = 0; i < fragments; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
u32 size = frag->size;
offset = 0;
do {
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
PCI_DMA_TODEVICE);
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 0;
put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
offset += bcnt;
size -= bcnt;
if (unlikely(put_tx++ == np->last_tx.ex))
put_tx = np->first_tx.ex;
if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
np->put_tx_ctx = np->first_tx_ctx;
} while (size);
}
/* set last fragment flag */
prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
/* save skb in this slot's context area */
prev_tx_ctx->skb = skb;
if (skb_is_gso(skb))
tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
else
tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
/* vlan tag */
if (vlan_tx_tag_present(skb))
start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
vlan_tx_tag_get(skb));
else
start_tx->txvlan = 0;
spin_lock_irqsave(&np->lock, flags);
if (np->tx_limit) {
/* Limit the number of outstanding tx. Setup all fragments, but
* do not set the VALID bit on the first descriptor. Save a pointer
* to that descriptor and also for next skb_map element.
*/
if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
if (!np->tx_change_owner)
np->tx_change_owner = start_tx_ctx;
/* remove VALID bit */
tx_flags &= ~NV_TX2_VALID;
start_tx_ctx->first_tx_desc = start_tx;
start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
np->tx_end_flip = np->put_tx_ctx;
} else {
np->tx_pkts_in_progress++;
}
}
/* set tx flags */
start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
np->put_tx.ex = put_tx;
spin_unlock_irqrestore(&np->lock, flags);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
return NETDEV_TX_OK;
}
static inline void nv_tx_flip_ownership(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
np->tx_pkts_in_progress--;
if (np->tx_change_owner) {
np->tx_change_owner->first_tx_desc->flaglen |=
cpu_to_le32(NV_TX2_VALID);
np->tx_pkts_in_progress++;
np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
if (np->tx_change_owner == np->tx_end_flip)
np->tx_change_owner = NULL;
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
}
}
/*
* nv_tx_done: check for completed packets, release the skbs.
*
* Caller must own np->lock.
*/
static int nv_tx_done(struct net_device *dev, int limit)
{
struct fe_priv *np = netdev_priv(dev);
u32 flags;
int tx_work = 0;
struct ring_desc *orig_get_tx = np->get_tx.orig;
while ((np->get_tx.orig != np->put_tx.orig) &&
!((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
(tx_work < limit)) {
nv_unmap_txskb(np, np->get_tx_ctx);
if (np->desc_ver == DESC_VER_1) {
if (flags & NV_TX_LASTPACKET) {
if (flags & NV_TX_ERROR) {
if (flags & NV_TX_UNDERFLOW)
dev->stats.tx_fifo_errors++;
if (flags & NV_TX_CARRIERLOST)
dev->stats.tx_carrier_errors++;
if ((flags & NV_TX_RETRYERROR) && !(flags & NV_TX_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
dev->stats.tx_errors++;
} else {
dev->stats.tx_packets++;
dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
}
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
}
} else {
if (flags & NV_TX2_LASTPACKET) {
if (flags & NV_TX2_ERROR) {
if (flags & NV_TX2_UNDERFLOW)
dev->stats.tx_fifo_errors++;
if (flags & NV_TX2_CARRIERLOST)
dev->stats.tx_carrier_errors++;
if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
dev->stats.tx_errors++;
} else {
dev->stats.tx_packets++;
dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
}
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
}
}
if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
np->get_tx.orig = np->first_tx.orig;
if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
np->get_tx_ctx = np->first_tx_ctx;
}
if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
np->tx_stop = 0;
netif_wake_queue(dev);
}
return tx_work;
}
static int nv_tx_done_optimized(struct net_device *dev, int limit)
{
struct fe_priv *np = netdev_priv(dev);
u32 flags;
int tx_work = 0;
struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
while ((np->get_tx.ex != np->put_tx.ex) &&
!((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
(tx_work < limit)) {
nv_unmap_txskb(np, np->get_tx_ctx);
if (flags & NV_TX2_LASTPACKET) {
if (!(flags & NV_TX2_ERROR))
dev->stats.tx_packets++;
else {
if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
if (np->driver_data & DEV_HAS_GEAR_MODE)
nv_gear_backoff_reseed(dev);
else
nv_legacybackoff_reseed(dev);
}
}
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
if (np->tx_limit)
nv_tx_flip_ownership(dev);
}
if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
np->get_tx.ex = np->first_tx.ex;
if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
np->get_tx_ctx = np->first_tx_ctx;
}
if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
np->tx_stop = 0;
netif_wake_queue(dev);
}
return tx_work;
}
/*
* nv_tx_timeout: dev->tx_timeout function
* Called with netif_tx_lock held.
*/
static void nv_tx_timeout(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 status;
union ring_type put_tx;
int saved_tx_limit;
int i;
if (np->msi_flags & NV_MSI_X_ENABLED)
status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
else
status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
netdev_info(dev, "Got tx_timeout. irq: %08x\n", status);
netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
netdev_info(dev, "Dumping tx registers\n");
for (i = 0; i <= np->register_size; i += 32) {
netdev_info(dev,
"%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
i,
readl(base + i + 0), readl(base + i + 4),
readl(base + i + 8), readl(base + i + 12),
readl(base + i + 16), readl(base + i + 20),
readl(base + i + 24), readl(base + i + 28));
}
netdev_info(dev, "Dumping tx ring\n");
for (i = 0; i < np->tx_ring_size; i += 4) {
if (!nv_optimized(np)) {
netdev_info(dev,
"%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
i,
le32_to_cpu(np->tx_ring.orig[i].buf),
le32_to_cpu(np->tx_ring.orig[i].flaglen),
le32_to_cpu(np->tx_ring.orig[i+1].buf),
le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
le32_to_cpu(np->tx_ring.orig[i+2].buf),
le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
le32_to_cpu(np->tx_ring.orig[i+3].buf),
le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
} else {
netdev_info(dev,
"%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
i,
le32_to_cpu(np->tx_ring.ex[i].bufhigh),
le32_to_cpu(np->tx_ring.ex[i].buflow),
le32_to_cpu(np->tx_ring.ex[i].flaglen),
le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
le32_to_cpu(np->tx_ring.ex[i+1].buflow),
le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
le32_to_cpu(np->tx_ring.ex[i+2].buflow),
le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
le32_to_cpu(np->tx_ring.ex[i+3].buflow),
le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
}
}
spin_lock_irq(&np->lock);
/* 1) stop tx engine */
nv_stop_tx(dev);
/* 2) complete any outstanding tx and do not give HW any limited tx pkts */
saved_tx_limit = np->tx_limit;
np->tx_limit = 0; /* prevent giving HW any limited pkts */
np->tx_stop = 0; /* prevent waking tx queue */
if (!nv_optimized(np))
nv_tx_done(dev, np->tx_ring_size);
else
nv_tx_done_optimized(dev, np->tx_ring_size);
/* save current HW postion */
if (np->tx_change_owner)
put_tx.ex = np->tx_change_owner->first_tx_desc;
else
put_tx = np->put_tx;
/* 3) clear all tx state */
nv_drain_tx(dev);
nv_init_tx(dev);
/* 4) restore state to current HW position */
np->get_tx = np->put_tx = put_tx;
np->tx_limit = saved_tx_limit;
/* 5) restart tx engine */
nv_start_tx(dev);
netif_wake_queue(dev);
spin_unlock_irq(&np->lock);
}
/*
* Called when the nic notices a mismatch between the actual data len on the
* wire and the len indicated in the 802 header
*/
static int nv_getlen(struct net_device *dev, void *packet, int datalen)
{
int hdrlen; /* length of the 802 header */
int protolen; /* length as stored in the proto field */
/* 1) calculate len according to header */
if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
hdrlen = VLAN_HLEN;
} else {
protolen = ntohs(((struct ethhdr *)packet)->h_proto);
hdrlen = ETH_HLEN;
}
if (protolen > ETH_DATA_LEN)
return datalen; /* Value in proto field not a len, no checks possible */
protolen += hdrlen;
/* consistency checks: */
if (datalen > ETH_ZLEN) {
if (datalen >= protolen) {
/* more data on wire than in 802 header, trim of
* additional data.
*/
return protolen;
} else {
/* less data on wire than mentioned in header.
* Discard the packet.
*/
return -1;
}
} else {
/* short packet. Accept only if 802 values are also short */
if (protolen > ETH_ZLEN) {
return -1;
}
return datalen;
}
}
static int nv_rx_process(struct net_device *dev, int limit)
{
struct fe_priv *np = netdev_priv(dev);
u32 flags;
int rx_work = 0;
struct sk_buff *skb;
int len;
while ((np->get_rx.orig != np->put_rx.orig) &&
!((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
(rx_work < limit)) {
/*
* the packet is for us - immediately tear down the pci mapping.
* TODO: check if a prefetch of the first cacheline improves
* the performance.
*/
pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
np->get_rx_ctx->dma_len,
PCI_DMA_FROMDEVICE);
skb = np->get_rx_ctx->skb;
np->get_rx_ctx->skb = NULL;
/* look at what we actually got: */
if (np->desc_ver == DESC_VER_1) {
if (likely(flags & NV_RX_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V1;
if (unlikely(flags & NV_RX_ERROR)) {
if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev->stats.rx_errors++;
dev_kfree_skb(skb);
goto next_pkt;
}
}
/* framing errors are soft errors */
else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
if (flags & NV_RX_SUBSTRACT1)
len--;
}
/* the rest are hard errors */
else {
if (flags & NV_RX_MISSEDFRAME)
dev->stats.rx_missed_errors++;
if (flags & NV_RX_CRCERR)
dev->stats.rx_crc_errors++;
if (flags & NV_RX_OVERFLOW)
dev->stats.rx_over_errors++;
dev->stats.rx_errors++;
dev_kfree_skb(skb);
goto next_pkt;
}
}
} else {
dev_kfree_skb(skb);
goto next_pkt;
}
} else {
if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V2;
if (unlikely(flags & NV_RX2_ERROR)) {
if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev->stats.rx_errors++;
dev_kfree_skb(skb);
goto next_pkt;
}
}
/* framing errors are soft errors */
else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
if (flags & NV_RX2_SUBSTRACT1)
len--;
}
/* the rest are hard errors */
else {
if (flags & NV_RX2_CRCERR)
dev->stats.rx_crc_errors++;
if (flags & NV_RX2_OVERFLOW)
dev->stats.rx_over_errors++;
dev->stats.rx_errors++;
dev_kfree_skb(skb);
goto next_pkt;
}
}
if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else {
dev_kfree_skb(skb);
goto next_pkt;
}
}
/* got a valid packet - forward it to the network core */
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
napi_gro_receive(&np->napi, skb);
dev->stats.rx_packets++;
dev->stats.rx_bytes += len;
next_pkt:
if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
np->get_rx.orig = np->first_rx.orig;
if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
np->get_rx_ctx = np->first_rx_ctx;
rx_work++;
}
return rx_work;
}
static int nv_rx_process_optimized(struct net_device *dev, int limit)
{
struct fe_priv *np = netdev_priv(dev);
u32 flags;
u32 vlanflags = 0;
int rx_work = 0;
struct sk_buff *skb;
int len;
while ((np->get_rx.ex != np->put_rx.ex) &&
!((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
(rx_work < limit)) {
/*
* the packet is for us - immediately tear down the pci mapping.
* TODO: check if a prefetch of the first cacheline improves
* the performance.
*/
pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
np->get_rx_ctx->dma_len,
PCI_DMA_FROMDEVICE);
skb = np->get_rx_ctx->skb;
np->get_rx_ctx->skb = NULL;
/* look at what we actually got: */
if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V2;
if (unlikely(flags & NV_RX2_ERROR)) {
if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev_kfree_skb(skb);
goto next_pkt;
}
}
/* framing errors are soft errors */
else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
if (flags & NV_RX2_SUBSTRACT1)
len--;
}
/* the rest are hard errors */
else {
dev_kfree_skb(skb);
goto next_pkt;
}
}
if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
skb->ip_summed = CHECKSUM_UNNECESSARY;
/* got a valid packet - forward it to the network core */
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
prefetch(skb->data);
if (likely(!np->vlangrp)) {
napi_gro_receive(&np->napi, skb);
} else {
vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
vlan_gro_receive(&np->napi, np->vlangrp,
vlanflags & NV_RX3_VLAN_TAG_MASK, skb);
} else {
napi_gro_receive(&np->napi, skb);
}
}
dev->stats.rx_packets++;
dev->stats.rx_bytes += len;
} else {
dev_kfree_skb(skb);
}
next_pkt:
if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
np->get_rx.ex = np->first_rx.ex;
if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
np->get_rx_ctx = np->first_rx_ctx;
rx_work++;
}
return rx_work;
}
static void set_bufsize(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
if (dev->mtu <= ETH_DATA_LEN)
np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
else
np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
}
/*
* nv_change_mtu: dev->change_mtu function
* Called with dev_base_lock held for read.
*/
static int nv_change_mtu(struct net_device *dev, int new_mtu)
{
struct fe_priv *np = netdev_priv(dev);
int old_mtu;
if (new_mtu < 64 || new_mtu > np->pkt_limit)
return -EINVAL;
old_mtu = dev->mtu;
dev->mtu = new_mtu;
/* return early if the buffer sizes will not change */
if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
return 0;
if (old_mtu == new_mtu)
return 0;
/* synchronized against open : rtnl_lock() held by caller */
if (netif_running(dev)) {
u8 __iomem *base = get_hwbase(dev);
/*
* It seems that the nic preloads valid ring entries into an
* internal buffer. The procedure for flushing everything is
* guessed, there is probably a simpler approach.
* Changing the MTU is a rare event, it shouldn't matter.
*/
nv_disable_irq(dev);
nv_napi_disable(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
nv_txrx_reset(dev);
/* drain rx queue */
nv_drain_rxtx(dev);
/* reinit driver view of the rx queue */
set_bufsize(dev);
if (nv_init_ring(dev)) {
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
}
/* reinit nic view of the rx queue */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
pci_push(base);
/* restart rx engine */
nv_start_rxtx(dev);
spin_unlock(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
nv_napi_enable(dev);
nv_enable_irq(dev);
}
return 0;
}
static void nv_copy_mac_to_hw(struct net_device *dev)
{
u8 __iomem *base = get_hwbase(dev);
u32 mac[2];
mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
(dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
writel(mac[0], base + NvRegMacAddrA);
writel(mac[1], base + NvRegMacAddrB);
}
/*
* nv_set_mac_address: dev->set_mac_address function
* Called with rtnl_lock() held.
*/
static int nv_set_mac_address(struct net_device *dev, void *addr)
{
struct fe_priv *np = netdev_priv(dev);
struct sockaddr *macaddr = (struct sockaddr *)addr;
if (!is_valid_ether_addr(macaddr->sa_data))
return -EADDRNOTAVAIL;
/* synchronized against open : rtnl_lock() held by caller */
memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
if (netif_running(dev)) {
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock_irq(&np->lock);
/* stop rx engine */
nv_stop_rx(dev);
/* set mac address */
nv_copy_mac_to_hw(dev);
/* restart rx engine */
nv_start_rx(dev);
spin_unlock_irq(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
} else {
nv_copy_mac_to_hw(dev);
}
return 0;
}
/*
* nv_set_multicast: dev->set_multicast function
* Called with netif_tx_lock held.
*/
static void nv_set_multicast(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 addr[2];
u32 mask[2];
u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
memset(addr, 0, sizeof(addr));
memset(mask, 0, sizeof(mask));
if (dev->flags & IFF_PROMISC) {
pff |= NVREG_PFF_PROMISC;
} else {
pff |= NVREG_PFF_MYADDR;
if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
u32 alwaysOff[2];
u32 alwaysOn[2];
alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
if (dev->flags & IFF_ALLMULTI) {
alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
} else {
struct netdev_hw_addr *ha;
netdev_for_each_mc_addr(ha, dev) {
unsigned char *addr = ha->addr;
u32 a, b;
a = le32_to_cpu(*(__le32 *) addr);
b = le16_to_cpu(*(__le16 *) (&addr[4]));
alwaysOn[0] &= a;
alwaysOff[0] &= ~a;
alwaysOn[1] &= b;
alwaysOff[1] &= ~b;
}
}
addr[0] = alwaysOn[0];
addr[1] = alwaysOn[1];
mask[0] = alwaysOn[0] | alwaysOff[0];
mask[1] = alwaysOn[1] | alwaysOff[1];
} else {
mask[0] = NVREG_MCASTMASKA_NONE;
mask[1] = NVREG_MCASTMASKB_NONE;
}
}
addr[0] |= NVREG_MCASTADDRA_FORCE;
pff |= NVREG_PFF_ALWAYS;
spin_lock_irq(&np->lock);
nv_stop_rx(dev);
writel(addr[0], base + NvRegMulticastAddrA);
writel(addr[1], base + NvRegMulticastAddrB);
writel(mask[0], base + NvRegMulticastMaskA);
writel(mask[1], base + NvRegMulticastMaskB);
writel(pff, base + NvRegPacketFilterFlags);
nv_start_rx(dev);
spin_unlock_irq(&np->lock);
}
static void nv_update_pause(struct net_device *dev, u32 pause_flags)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
} else {
writel(pff, base + NvRegPacketFilterFlags);
}
}
if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
/* limit the number of tx pause frames to a default of 8 */
writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
}
writel(pause_enable, base + NvRegTxPauseFrame);
writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
} else {
writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
writel(regmisc, base + NvRegMisc1);
}
}
}
/**
* nv_update_linkspeed: Setup the MAC according to the link partner
* @dev: Network device to be configured
*
* The function queries the PHY and checks if there is a link partner.
* If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
* set to 10 MBit HD.
*
* The function returns 0 if there is no link partner and 1 if there is
* a good link partner.
*/
static int nv_update_linkspeed(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int adv = 0;
int lpa = 0;
int adv_lpa, adv_pause, lpa_pause;
int newls = np->linkspeed;
int newdup = np->duplex;
int mii_status;
int retval = 0;
u32 control_1000, status_1000, phyreg, pause_flags, txreg;
u32 txrxFlags = 0;
u32 phy_exp;
/* BMSR_LSTATUS is latched, read it twice:
* we want the current value.
*/
mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
if (!(mii_status & BMSR_LSTATUS)) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 0;
retval = 0;
goto set_speed;
}
if (np->autoneg == 0) {
if (np->fixed_mode & LPA_100FULL) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
newdup = 1;
} else if (np->fixed_mode & LPA_100HALF) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
newdup = 0;
} else if (np->fixed_mode & LPA_10FULL) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 1;
} else {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 0;
}
retval = 1;
goto set_speed;
}
/* check auto negotiation is complete */
if (!(mii_status & BMSR_ANEGCOMPLETE)) {
/* still in autonegotiation - configure nic for 10 MBit HD and wait. */
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 0;
retval = 0;
goto set_speed;
}
adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
retval = 1;
if (np->gigabit == PHY_GIGABIT) {
control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
if ((control_1000 & ADVERTISE_1000FULL) &&
(status_1000 & LPA_1000FULL)) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
newdup = 1;
goto set_speed;
}
}
/* FIXME: handle parallel detection properly */
adv_lpa = lpa & adv;
if (adv_lpa & LPA_100FULL) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
newdup = 1;
} else if (adv_lpa & LPA_100HALF) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
newdup = 0;
} else if (adv_lpa & LPA_10FULL) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 1;
} else if (adv_lpa & LPA_10HALF) {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 0;
} else {
newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
newdup = 0;
}
set_speed:
if (np->duplex == newdup && np->linkspeed == newls)
return retval;
np->duplex = newdup;
np->linkspeed = newls;
/* The transmitter and receiver must be restarted for safe update */
if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
txrxFlags |= NV_RESTART_TX;
nv_stop_tx(dev);
}
if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
txrxFlags |= NV_RESTART_RX;
nv_stop_rx(dev);
}
if (np->gigabit == PHY_GIGABIT) {
phyreg = readl(base + NvRegSlotTime);
phyreg &= ~(0x3FF00);
if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
phyreg |= NVREG_SLOTTIME_10_100_FULL;
else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
phyreg |= NVREG_SLOTTIME_1000_FULL;
writel(phyreg, base + NvRegSlotTime);
}
phyreg = readl(base + NvRegPhyInterface);
phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
if (np->duplex == 0)
phyreg |= PHY_HALF;
if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
phyreg |= PHY_100;
else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
phyreg |= PHY_1000;
writel(phyreg, base + NvRegPhyInterface);
phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
if (phyreg & PHY_RGMII) {
if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
txreg = NVREG_TX_DEFERRAL_RGMII_1000;
} else {
if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
else
txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
} else {
txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
}
}
} else {
if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
else
txreg = NVREG_TX_DEFERRAL_DEFAULT;
}
writel(txreg, base + NvRegTxDeferral);
if (np->desc_ver == DESC_VER_1) {
txreg = NVREG_TX_WM_DESC1_DEFAULT;
} else {
if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
txreg = NVREG_TX_WM_DESC2_3_1000;
else
txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
}
writel(txreg, base + NvRegTxWatermark);
writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
base + NvRegMisc1);
pci_push(base);
writel(np->linkspeed, base + NvRegLinkSpeed);
pci_push(base);
pause_flags = 0;
/* setup pause frame */
if (np->duplex != 0) {
if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
switch (adv_pause) {
case ADVERTISE_PAUSE_CAP:
if (lpa_pause & LPA_PAUSE_CAP) {
pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
}
break;
case ADVERTISE_PAUSE_ASYM:
if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
break;
case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
if (lpa_pause & LPA_PAUSE_CAP) {
pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
}
if (lpa_pause == LPA_PAUSE_ASYM)
pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
break;
}
} else {
pause_flags = np->pause_flags;
}
}
nv_update_pause(dev, pause_flags);
if (txrxFlags & NV_RESTART_TX)
nv_start_tx(dev);
if (txrxFlags & NV_RESTART_RX)
nv_start_rx(dev);
return retval;
}
static void nv_linkchange(struct net_device *dev)
{
if (nv_update_linkspeed(dev)) {
if (!netif_carrier_ok(dev)) {
netif_carrier_on(dev);
netdev_info(dev, "link up\n");
nv_txrx_gate(dev, false);
nv_start_rx(dev);
}
} else {
if (netif_carrier_ok(dev)) {
netif_carrier_off(dev);
netdev_info(dev, "link down\n");
nv_txrx_gate(dev, true);
nv_stop_rx(dev);
}
}
}
static void nv_link_irq(struct net_device *dev)
{
u8 __iomem *base = get_hwbase(dev);
u32 miistat;
miistat = readl(base + NvRegMIIStatus);
writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
if (miistat & (NVREG_MIISTAT_LINKCHANGE))
nv_linkchange(dev);
}
static void nv_msi_workaround(struct fe_priv *np)
{
/* Need to toggle the msi irq mask within the ethernet device,
* otherwise, future interrupts will not be detected.
*/
if (np->msi_flags & NV_MSI_ENABLED) {
u8 __iomem *base = np->base;
writel(0, base + NvRegMSIIrqMask);
writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
}
}
static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
{
struct fe_priv *np = netdev_priv(dev);
if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
if (total_work > NV_DYNAMIC_THRESHOLD) {
/* transition to poll based interrupts */
np->quiet_count = 0;
if (np->irqmask != NVREG_IRQMASK_CPU) {
np->irqmask = NVREG_IRQMASK_CPU;
return 1;
}
} else {
if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
np->quiet_count++;
} else {
/* reached a period of low activity, switch
to per tx/rx packet interrupts */
if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
np->irqmask = NVREG_IRQMASK_THROUGHPUT;
return 1;
}
}
}
}
return 0;
}
static irqreturn_t nv_nic_irq(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
np->events = readl(base + NvRegIrqStatus);
writel(np->events, base + NvRegIrqStatus);
} else {
np->events = readl(base + NvRegMSIXIrqStatus);
writel(np->events, base + NvRegMSIXIrqStatus);
}
if (!(np->events & np->irqmask))
return IRQ_NONE;
nv_msi_workaround(np);
if (napi_schedule_prep(&np->napi)) {
/*
* Disable further irq's (msix not enabled with napi)
*/
writel(0, base + NvRegIrqMask);
__napi_schedule(&np->napi);
}
return IRQ_HANDLED;
}
/**
* All _optimized functions are used to help increase performance
* (reduce CPU and increase throughput). They use descripter version 3,
* compiler directives, and reduce memory accesses.
*/
static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
np->events = readl(base + NvRegIrqStatus);
writel(np->events, base + NvRegIrqStatus);
} else {
np->events = readl(base + NvRegMSIXIrqStatus);
writel(np->events, base + NvRegMSIXIrqStatus);
}
if (!(np->events & np->irqmask))
return IRQ_NONE;
nv_msi_workaround(np);
if (napi_schedule_prep(&np->napi)) {
/*
* Disable further irq's (msix not enabled with napi)
*/
writel(0, base + NvRegIrqMask);
__napi_schedule(&np->napi);
}
return IRQ_HANDLED;
}
static irqreturn_t nv_nic_irq_tx(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 events;
int i;
unsigned long flags;
for (i = 0;; i++) {
events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
if (!(events & np->irqmask))
break;
spin_lock_irqsave(&np->lock, flags);
nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
spin_unlock_irqrestore(&np->lock, flags);
if (unlikely(i > max_interrupt_work)) {
spin_lock_irqsave(&np->lock, flags);
/* disable interrupts on the nic */
writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
pci_push(base);
if (!np->in_shutdown) {
np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
spin_unlock_irqrestore(&np->lock, flags);
netdev_dbg(dev, "%s: too many iterations (%d)\n",
__func__, i);
break;
}
}
return IRQ_RETVAL(i);
}
static int nv_napi_poll(struct napi_struct *napi, int budget)
{
struct fe_priv *np = container_of(napi, struct fe_priv, napi);
struct net_device *dev = np->dev;
u8 __iomem *base = get_hwbase(dev);
unsigned long flags;
int retcode;
int rx_count, tx_work = 0, rx_work = 0;
do {
if (!nv_optimized(np)) {
spin_lock_irqsave(&np->lock, flags);
tx_work += nv_tx_done(dev, np->tx_ring_size);
spin_unlock_irqrestore(&np->lock, flags);
rx_count = nv_rx_process(dev, budget - rx_work);
retcode = nv_alloc_rx(dev);
} else {
spin_lock_irqsave(&np->lock, flags);
tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
spin_unlock_irqrestore(&np->lock, flags);
rx_count = nv_rx_process_optimized(dev,
budget - rx_work);
retcode = nv_alloc_rx_optimized(dev);
}
} while (retcode == 0 &&
rx_count > 0 && (rx_work += rx_count) < budget);
if (retcode) {
spin_lock_irqsave(&np->lock, flags);
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
spin_unlock_irqrestore(&np->lock, flags);
}
nv_change_interrupt_mode(dev, tx_work + rx_work);
if (unlikely(np->events & NVREG_IRQ_LINK)) {
spin_lock_irqsave(&np->lock, flags);
nv_link_irq(dev);
spin_unlock_irqrestore(&np->lock, flags);
}
if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
spin_lock_irqsave(&np->lock, flags);
nv_linkchange(dev);
spin_unlock_irqrestore(&np->lock, flags);
np->link_timeout = jiffies + LINK_TIMEOUT;
}
if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
spin_lock_irqsave(&np->lock, flags);
if (!np->in_shutdown) {
np->nic_poll_irq = np->irqmask;
np->recover_error = 1;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
spin_unlock_irqrestore(&np->lock, flags);
napi_complete(napi);
return rx_work;
}
if (rx_work < budget) {
/* re-enable interrupts
(msix not enabled in napi) */
napi_complete(napi);
writel(np->irqmask, base + NvRegIrqMask);
}
return rx_work;
}
static irqreturn_t nv_nic_irq_rx(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 events;
int i;
unsigned long flags;
for (i = 0;; i++) {
events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
if (!(events & np->irqmask))
break;
if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
if (unlikely(nv_alloc_rx_optimized(dev))) {
spin_lock_irqsave(&np->lock, flags);
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
spin_unlock_irqrestore(&np->lock, flags);
}
}
if (unlikely(i > max_interrupt_work)) {
spin_lock_irqsave(&np->lock, flags);
/* disable interrupts on the nic */
writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
pci_push(base);
if (!np->in_shutdown) {
np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
spin_unlock_irqrestore(&np->lock, flags);
netdev_dbg(dev, "%s: too many iterations (%d)\n",
__func__, i);
break;
}
}
return IRQ_RETVAL(i);
}
static irqreturn_t nv_nic_irq_other(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 events;
int i;
unsigned long flags;
for (i = 0;; i++) {
events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
if (!(events & np->irqmask))
break;
/* check tx in case we reached max loop limit in tx isr */
spin_lock_irqsave(&np->lock, flags);
nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
spin_unlock_irqrestore(&np->lock, flags);
if (events & NVREG_IRQ_LINK) {
spin_lock_irqsave(&np->lock, flags);
nv_link_irq(dev);
spin_unlock_irqrestore(&np->lock, flags);
}
if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
spin_lock_irqsave(&np->lock, flags);
nv_linkchange(dev);
spin_unlock_irqrestore(&np->lock, flags);
np->link_timeout = jiffies + LINK_TIMEOUT;
}
if (events & NVREG_IRQ_RECOVER_ERROR) {
spin_lock_irq(&np->lock);
/* disable interrupts on the nic */
writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
pci_push(base);
if (!np->in_shutdown) {
np->nic_poll_irq |= NVREG_IRQ_OTHER;
np->recover_error = 1;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
spin_unlock_irq(&np->lock);
break;
}
if (unlikely(i > max_interrupt_work)) {
spin_lock_irqsave(&np->lock, flags);
/* disable interrupts on the nic */
writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
pci_push(base);
if (!np->in_shutdown) {
np->nic_poll_irq |= NVREG_IRQ_OTHER;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
spin_unlock_irqrestore(&np->lock, flags);
netdev_dbg(dev, "%s: too many iterations (%d)\n",
__func__, i);
break;
}
}
return IRQ_RETVAL(i);
}
static irqreturn_t nv_nic_irq_test(int foo, void *data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 events;
if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
} else {
events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
}
pci_push(base);
if (!(events & NVREG_IRQ_TIMER))
return IRQ_RETVAL(0);
nv_msi_workaround(np);
spin_lock(&np->lock);
np->intr_test = 1;
spin_unlock(&np->lock);
return IRQ_RETVAL(1);
}
static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
{
u8 __iomem *base = get_hwbase(dev);
int i;
u32 msixmap = 0;
/* Each interrupt bit can be mapped to a MSIX vector (4 bits).
* MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
* the remaining 8 interrupts.
*/
for (i = 0; i < 8; i++) {
if ((irqmask >> i) & 0x1)
msixmap |= vector << (i << 2);
}
writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
msixmap = 0;
for (i = 0; i < 8; i++) {
if ((irqmask >> (i + 8)) & 0x1)
msixmap |= vector << (i << 2);
}
writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
}
static int nv_request_irq(struct net_device *dev, int intr_test)
{
struct fe_priv *np = get_nvpriv(dev);
u8 __iomem *base = get_hwbase(dev);
int ret = 1;
int i;
irqreturn_t (*handler)(int foo, void *data);
if (intr_test) {
handler = nv_nic_irq_test;
} else {
if (nv_optimized(np))
handler = nv_nic_irq_optimized;
else
handler = nv_nic_irq;
}
if (np->msi_flags & NV_MSI_X_CAPABLE) {
for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
np->msi_x_entry[i].entry = i;
ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK));
if (ret == 0) {
np->msi_flags |= NV_MSI_X_ENABLED;
if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
/* Request irq for rx handling */
sprintf(np->name_rx, "%s-rx", dev->name);
if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev) != 0) {
netdev_info(dev,
"request_irq failed for rx %d\n",
ret);
pci_disable_msix(np->pci_dev);
np->msi_flags &= ~NV_MSI_X_ENABLED;
goto out_err;
}
/* Request irq for tx handling */
sprintf(np->name_tx, "%s-tx", dev->name);
if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev) != 0) {
netdev_info(dev,
"request_irq failed for tx %d\n",
ret);
pci_disable_msix(np->pci_dev);
np->msi_flags &= ~NV_MSI_X_ENABLED;
goto out_free_rx;
}
/* Request irq for link and timer handling */
sprintf(np->name_other, "%s-other", dev->name);
if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
nv_nic_irq_other, IRQF_SHARED, np->name_other, dev) != 0) {
netdev_info(dev,
"request_irq failed for link %d\n",
ret);
pci_disable_msix(np->pci_dev);
np->msi_flags &= ~NV_MSI_X_ENABLED;
goto out_free_tx;
}
/* map interrupts to their respective vector */
writel(0, base + NvRegMSIXMap0);
writel(0, base + NvRegMSIXMap1);
set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
} else {
/* Request irq for all interrupts */
if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
netdev_info(dev,
"request_irq failed %d\n",
ret);
pci_disable_msix(np->pci_dev);
np->msi_flags &= ~NV_MSI_X_ENABLED;
goto out_err;
}
/* map interrupts to vector 0 */
writel(0, base + NvRegMSIXMap0);
writel(0, base + NvRegMSIXMap1);
}
}
}
if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
ret = pci_enable_msi(np->pci_dev);
if (ret == 0) {
np->msi_flags |= NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
netdev_info(dev, "request_irq failed %d\n",
ret);
pci_disable_msi(np->pci_dev);
np->msi_flags &= ~NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
goto out_err;
}
/* map interrupts to vector 0 */
writel(0, base + NvRegMSIMap0);
writel(0, base + NvRegMSIMap1);
/* enable msi vector 0 */
writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
}
}
if (ret != 0) {
if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
goto out_err;
}
return 0;
out_free_tx:
free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
out_free_rx:
free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
out_err:
return 1;
}
static void nv_free_irq(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
int i;
if (np->msi_flags & NV_MSI_X_ENABLED) {
for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
free_irq(np->msi_x_entry[i].vector, dev);
pci_disable_msix(np->pci_dev);
np->msi_flags &= ~NV_MSI_X_ENABLED;
} else {
free_irq(np->pci_dev->irq, dev);
if (np->msi_flags & NV_MSI_ENABLED) {
pci_disable_msi(np->pci_dev);
np->msi_flags &= ~NV_MSI_ENABLED;
}
}
}
static void nv_do_nic_poll(unsigned long data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 mask = 0;
/*
* First disable irq(s) and then
* reenable interrupts on the nic, we have to do this before calling
* nv_nic_irq because that may decide to do otherwise
*/
if (!using_multi_irqs(dev)) {
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
disable_irq_lockdep(np->pci_dev->irq);
mask = np->irqmask;
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
mask |= NVREG_IRQ_RX_ALL;
}
if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
mask |= NVREG_IRQ_TX_ALL;
}
if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
mask |= NVREG_IRQ_OTHER;
}
}
/* disable_irq() contains synchronize_irq, thus no irq handler can run now */
if (np->recover_error) {
np->recover_error = 0;
netdev_info(dev, "MAC in recoverable error state\n");
if (netif_running(dev)) {
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
if (np->driver_data & DEV_HAS_POWER_CNTRL)
nv_mac_reset(dev);
nv_txrx_reset(dev);
/* drain rx queue */
nv_drain_rxtx(dev);
/* reinit driver view of the rx queue */
set_bufsize(dev);
if (nv_init_ring(dev)) {
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
}
/* reinit nic view of the rx queue */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
pci_push(base);
/* clear interrupts */
if (!(np->msi_flags & NV_MSI_X_ENABLED))
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
else
writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
/* restart rx engine */
nv_start_rxtx(dev);
spin_unlock(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
}
}
writel(mask, base + NvRegIrqMask);
pci_push(base);
if (!using_multi_irqs(dev)) {
np->nic_poll_irq = 0;
if (nv_optimized(np))
nv_nic_irq_optimized(0, dev);
else
nv_nic_irq(0, dev);
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
enable_irq_lockdep(np->pci_dev->irq);
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
nv_nic_irq_rx(0, dev);
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
}
if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
nv_nic_irq_tx(0, dev);
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
}
if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
nv_nic_irq_other(0, dev);
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
}
}
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void nv_poll_controller(struct net_device *dev)
{
nv_do_nic_poll((unsigned long) dev);
}
#endif
static void nv_do_stats_poll(unsigned long data)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
nv_get_hw_stats(dev);
if (!np->in_shutdown)
mod_timer(&np->stats_poll,
round_jiffies(jiffies + STATS_INTERVAL));
}
static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
struct fe_priv *np = netdev_priv(dev);
strcpy(info->driver, DRV_NAME);
strcpy(info->version, FORCEDETH_VERSION);
strcpy(info->bus_info, pci_name(np->pci_dev));
}
static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
{
struct fe_priv *np = netdev_priv(dev);
wolinfo->supported = WAKE_MAGIC;
spin_lock_irq(&np->lock);
if (np->wolenabled)
wolinfo->wolopts = WAKE_MAGIC;
spin_unlock_irq(&np->lock);
}
static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 flags = 0;
if (wolinfo->wolopts == 0) {
np->wolenabled = 0;
} else if (wolinfo->wolopts & WAKE_MAGIC) {
np->wolenabled = 1;
flags = NVREG_WAKEUPFLAGS_ENABLE;
}
if (netif_running(dev)) {
spin_lock_irq(&np->lock);
writel(flags, base + NvRegWakeUpFlags);
spin_unlock_irq(&np->lock);
}
device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
return 0;
}
static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
struct fe_priv *np = netdev_priv(dev);
int adv;
spin_lock_irq(&np->lock);
ecmd->port = PORT_MII;
if (!netif_running(dev)) {
/* We do not track link speed / duplex setting if the
* interface is disabled. Force a link check */
if (nv_update_linkspeed(dev)) {
if (!netif_carrier_ok(dev))
netif_carrier_on(dev);
} else {
if (netif_carrier_ok(dev))
netif_carrier_off(dev);
}
}
if (netif_carrier_ok(dev)) {
switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
case NVREG_LINKSPEED_10:
ecmd->speed = SPEED_10;
break;
case NVREG_LINKSPEED_100:
ecmd->speed = SPEED_100;
break;
case NVREG_LINKSPEED_1000:
ecmd->speed = SPEED_1000;
break;
}
ecmd->duplex = DUPLEX_HALF;
if (np->duplex)
ecmd->duplex = DUPLEX_FULL;
} else {
ecmd->speed = -1;
ecmd->duplex = -1;
}
ecmd->autoneg = np->autoneg;
ecmd->advertising = ADVERTISED_MII;
if (np->autoneg) {
ecmd->advertising |= ADVERTISED_Autoneg;
adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
if (adv & ADVERTISE_10HALF)
ecmd->advertising |= ADVERTISED_10baseT_Half;
if (adv & ADVERTISE_10FULL)
ecmd->advertising |= ADVERTISED_10baseT_Full;
if (adv & ADVERTISE_100HALF)
ecmd->advertising |= ADVERTISED_100baseT_Half;
if (adv & ADVERTISE_100FULL)
ecmd->advertising |= ADVERTISED_100baseT_Full;
if (np->gigabit == PHY_GIGABIT) {
adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
if (adv & ADVERTISE_1000FULL)
ecmd->advertising |= ADVERTISED_1000baseT_Full;
}
}
ecmd->supported = (SUPPORTED_Autoneg |
SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
SUPPORTED_MII);
if (np->gigabit == PHY_GIGABIT)
ecmd->supported |= SUPPORTED_1000baseT_Full;
ecmd->phy_address = np->phyaddr;
ecmd->transceiver = XCVR_EXTERNAL;
/* ignore maxtxpkt, maxrxpkt for now */
spin_unlock_irq(&np->lock);
return 0;
}
static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
struct fe_priv *np = netdev_priv(dev);
if (ecmd->port != PORT_MII)
return -EINVAL;
if (ecmd->transceiver != XCVR_EXTERNAL)
return -EINVAL;
if (ecmd->phy_address != np->phyaddr) {
/* TODO: support switching between multiple phys. Should be
* trivial, but not enabled due to lack of test hardware. */
return -EINVAL;
}
if (ecmd->autoneg == AUTONEG_ENABLE) {
u32 mask;
mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
if (np->gigabit == PHY_GIGABIT)
mask |= ADVERTISED_1000baseT_Full;
if ((ecmd->advertising & mask) == 0)
return -EINVAL;
} else if (ecmd->autoneg == AUTONEG_DISABLE) {
/* Note: autonegotiation disable, speed 1000 intentionally
* forbidden - noone should need that. */
if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
return -EINVAL;
if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
return -EINVAL;
} else {
return -EINVAL;
}
netif_carrier_off(dev);
if (netif_running(dev)) {
unsigned long flags;
nv_disable_irq(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
/* with plain spinlock lockdep complains */
spin_lock_irqsave(&np->lock, flags);
/* stop engines */
/* FIXME:
* this can take some time, and interrupts are disabled
* due to spin_lock_irqsave, but let's hope no daemon
* is going to change the settings very often...
* Worst case:
* NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
* + some minor delays, which is up to a second approximately
*/
nv_stop_rxtx(dev);
spin_unlock_irqrestore(&np->lock, flags);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
}
if (ecmd->autoneg == AUTONEG_ENABLE) {
int adv, bmcr;
np->autoneg = 1;
/* advertise only what has been requested */
adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (ecmd->advertising & ADVERTISED_10baseT_Half)
adv |= ADVERTISE_10HALF;
if (ecmd->advertising & ADVERTISED_10baseT_Full)
adv |= ADVERTISE_10FULL;
if (ecmd->advertising & ADVERTISED_100baseT_Half)
adv |= ADVERTISE_100HALF;
if (ecmd->advertising & ADVERTISED_100baseT_Full)
adv |= ADVERTISE_100FULL;
if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
adv |= ADVERTISE_PAUSE_ASYM;
mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
if (np->gigabit == PHY_GIGABIT) {
adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
adv &= ~ADVERTISE_1000FULL;
if (ecmd->advertising & ADVERTISED_1000baseT_Full)
adv |= ADVERTISE_1000FULL;
mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
}
if (netif_running(dev))
netdev_info(dev, "link down\n");
bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
bmcr |= BMCR_ANENABLE;
/* reset the phy in order for settings to stick,
* and cause autoneg to start */
if (phy_reset(dev, bmcr)) {
netdev_info(dev, "phy reset failed\n");
return -EINVAL;
}
} else {
bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
}
} else {
int adv, bmcr;
np->autoneg = 0;
adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
adv |= ADVERTISE_10HALF;
if (ecmd->speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
adv |= ADVERTISE_10FULL;
if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
adv |= ADVERTISE_100HALF;
if (ecmd->speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
adv |= ADVERTISE_100FULL;
np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisments but disable tx pause */
adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
}
if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
adv |= ADVERTISE_PAUSE_ASYM;
np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
}
mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
np->fixed_mode = adv;
if (np->gigabit == PHY_GIGABIT) {
adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
adv &= ~ADVERTISE_1000FULL;
mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
}
bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
bmcr |= BMCR_FULLDPLX;
if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
bmcr |= BMCR_SPEED100;
if (np->phy_oui == PHY_OUI_MARVELL) {
/* reset the phy in order for forced mode settings to stick */
if (phy_reset(dev, bmcr)) {
netdev_info(dev, "phy reset failed\n");
return -EINVAL;
}
} else {
mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
if (netif_running(dev)) {
/* Wait a bit and then reconfigure the nic. */
udelay(10);
nv_linkchange(dev);
}
}
}
if (netif_running(dev)) {
nv_start_rxtx(dev);
nv_enable_irq(dev);
}
return 0;
}
#define FORCEDETH_REGS_VER 1
static int nv_get_regs_len(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
return np->register_size;
}
static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 *rbuf = buf;
int i;
regs->version = FORCEDETH_REGS_VER;
spin_lock_irq(&np->lock);
for (i = 0; i <= np->register_size/sizeof(u32); i++)
rbuf[i] = readl(base + i*sizeof(u32));
spin_unlock_irq(&np->lock);
}
static int nv_nway_reset(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
int ret;
if (np->autoneg) {
int bmcr;
netif_carrier_off(dev);
if (netif_running(dev)) {
nv_disable_irq(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
spin_unlock(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netdev_info(dev, "link down\n");
}
bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
bmcr |= BMCR_ANENABLE;
/* reset the phy in order for settings to stick*/
if (phy_reset(dev, bmcr)) {
netdev_info(dev, "phy reset failed\n");
return -EINVAL;
}
} else {
bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
}
if (netif_running(dev)) {
nv_start_rxtx(dev);
nv_enable_irq(dev);
}
ret = 0;
} else {
ret = -EINVAL;
}
return ret;
}
static int nv_set_tso(struct net_device *dev, u32 value)
{
struct fe_priv *np = netdev_priv(dev);
if ((np->driver_data & DEV_HAS_CHECKSUM))
return ethtool_op_set_tso(dev, value);
else
return -EOPNOTSUPP;
}
static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
{
struct fe_priv *np = netdev_priv(dev);
ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
ring->rx_mini_max_pending = 0;
ring->rx_jumbo_max_pending = 0;
ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
ring->rx_pending = np->rx_ring_size;
ring->rx_mini_pending = 0;
ring->rx_jumbo_pending = 0;
ring->tx_pending = np->tx_ring_size;
}
static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
dma_addr_t ring_addr;
if (ring->rx_pending < RX_RING_MIN ||
ring->tx_pending < TX_RING_MIN ||
ring->rx_mini_pending != 0 ||
ring->rx_jumbo_pending != 0 ||
(np->desc_ver == DESC_VER_1 &&
(ring->rx_pending > RING_MAX_DESC_VER_1 ||
ring->tx_pending > RING_MAX_DESC_VER_1)) ||
(np->desc_ver != DESC_VER_1 &&
(ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
return -EINVAL;
}
/* allocate new rings */
if (!nv_optimized(np)) {
rxtx_ring = pci_alloc_consistent(np->pci_dev,
sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
&ring_addr);
} else {
rxtx_ring = pci_alloc_consistent(np->pci_dev,
sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
&ring_addr);
}
rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
/* fall back to old rings */
if (!nv_optimized(np)) {
if (rxtx_ring)
pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
rxtx_ring, ring_addr);
} else {
if (rxtx_ring)
pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
rxtx_ring, ring_addr);
}
kfree(rx_skbuff);
kfree(tx_skbuff);
goto exit;
}
if (netif_running(dev)) {
nv_disable_irq(dev);
nv_napi_disable(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
nv_txrx_reset(dev);
/* drain queues */
nv_drain_rxtx(dev);
/* delete queues */
free_rings(dev);
}
/* set new values */
np->rx_ring_size = ring->rx_pending;
np->tx_ring_size = ring->tx_pending;
if (!nv_optimized(np)) {
np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
} else {
np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
}
np->rx_skb = (struct nv_skb_map *)rx_skbuff;
np->tx_skb = (struct nv_skb_map *)tx_skbuff;
np->ring_addr = ring_addr;
memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
if (netif_running(dev)) {
/* reinit driver view of the queues */
set_bufsize(dev);
if (nv_init_ring(dev)) {
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
}
/* reinit nic view of the queues */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
pci_push(base);
/* restart engines */
nv_start_rxtx(dev);
spin_unlock(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
nv_napi_enable(dev);
nv_enable_irq(dev);
}
return 0;
exit:
return -ENOMEM;
}
static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
{
struct fe_priv *np = netdev_priv(dev);
pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
}
static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
{
struct fe_priv *np = netdev_priv(dev);
int adv, bmcr;
if ((!np->autoneg && np->duplex == 0) ||
(np->autoneg && !pause->autoneg && np->duplex == 0)) {
netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
return -EINVAL;
}
if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
netdev_info(dev, "hardware does not support tx pause frames\n");
return -EINVAL;
}
netif_carrier_off(dev);
if (netif_running(dev)) {
nv_disable_irq(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock(&np->lock);
/* stop engines */
nv_stop_rxtx(dev);
spin_unlock(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
}
np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
if (pause->rx_pause)
np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
if (pause->tx_pause)
np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
if (np->autoneg && pause->autoneg) {
np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisments but disable tx pause */
adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
adv |= ADVERTISE_PAUSE_ASYM;
mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
if (netif_running(dev))
netdev_info(dev, "link down\n");
bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
} else {
np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
if (pause->rx_pause)
np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
if (pause->tx_pause)
np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
if (!netif_running(dev))
nv_update_linkspeed(dev);
else
nv_update_pause(dev, np->pause_flags);
}
if (netif_running(dev)) {
nv_start_rxtx(dev);
nv_enable_irq(dev);
}
return 0;
}
static u32 nv_get_rx_csum(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
return np->rx_csum != 0;
}
static int nv_set_rx_csum(struct net_device *dev, u32 data)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int retcode = 0;
if (np->driver_data & DEV_HAS_CHECKSUM) {
if (data) {
np->rx_csum = 1;
np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
} else {
np->rx_csum = 0;
/* vlan is dependent on rx checksum offload */
if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE))
np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
}
if (netif_running(dev)) {
spin_lock_irq(&np->lock);
writel(np->txrxctl_bits, base + NvRegTxRxControl);
spin_unlock_irq(&np->lock);
}
} else {
return -EINVAL;
}
return retcode;
}
static int nv_set_tx_csum(struct net_device *dev, u32 data)
{
struct fe_priv *np = netdev_priv(dev);
if (np->driver_data & DEV_HAS_CHECKSUM)
return ethtool_op_set_tx_csum(dev, data);
else
return -EOPNOTSUPP;
}
static int nv_set_sg(struct net_device *dev, u32 data)
{
struct fe_priv *np = netdev_priv(dev);
if (np->driver_data & DEV_HAS_CHECKSUM)
return ethtool_op_set_sg(dev, data);
else
return -EOPNOTSUPP;
}
static int nv_get_sset_count(struct net_device *dev, int sset)
{
struct fe_priv *np = netdev_priv(dev);
switch (sset) {
case ETH_SS_TEST:
if (np->driver_data & DEV_HAS_TEST_EXTENDED)
return NV_TEST_COUNT_EXTENDED;
else
return NV_TEST_COUNT_BASE;
case ETH_SS_STATS:
if (np->driver_data & DEV_HAS_STATISTICS_V3)
return NV_DEV_STATISTICS_V3_COUNT;
else if (np->driver_data & DEV_HAS_STATISTICS_V2)
return NV_DEV_STATISTICS_V2_COUNT;
else if (np->driver_data & DEV_HAS_STATISTICS_V1)
return NV_DEV_STATISTICS_V1_COUNT;
else
return 0;
default:
return -EOPNOTSUPP;
}
}
static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
{
struct fe_priv *np = netdev_priv(dev);
/* update stats */
nv_do_stats_poll((unsigned long)dev);
memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
}
static int nv_link_test(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
int mii_status;
mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
/* check phy link status */
if (!(mii_status & BMSR_LSTATUS))
return 0;
else
return 1;
}
static int nv_register_test(struct net_device *dev)
{
u8 __iomem *base = get_hwbase(dev);
int i = 0;
u32 orig_read, new_read;
do {
orig_read = readl(base + nv_registers_test[i].reg);
/* xor with mask to toggle bits */
orig_read ^= nv_registers_test[i].mask;
writel(orig_read, base + nv_registers_test[i].reg);
new_read = readl(base + nv_registers_test[i].reg);
if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
return 0;
/* restore original value */
orig_read ^= nv_registers_test[i].mask;
writel(orig_read, base + nv_registers_test[i].reg);
} while (nv_registers_test[++i].reg != 0);
return 1;
}
static int nv_interrupt_test(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int ret = 1;
int testcnt;
u32 save_msi_flags, save_poll_interval = 0;
if (netif_running(dev)) {
/* free current irq */
nv_free_irq(dev);
save_poll_interval = readl(base+NvRegPollingInterval);
}
/* flag to test interrupt handler */
np->intr_test = 0;
/* setup test irq */
save_msi_flags = np->msi_flags;
np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
np->msi_flags |= 0x001; /* setup 1 vector */
if (nv_request_irq(dev, 1))
return 0;
/* setup timer interrupt */
writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
/* wait for at least one interrupt */
msleep(100);
spin_lock_irq(&np->lock);
/* flag should be set within ISR */
testcnt = np->intr_test;
if (!testcnt)
ret = 2;
nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
if (!(np->msi_flags & NV_MSI_X_ENABLED))
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
else
writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
spin_unlock_irq(&np->lock);
nv_free_irq(dev);
np->msi_flags = save_msi_flags;
if (netif_running(dev)) {
writel(save_poll_interval, base + NvRegPollingInterval);
writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
/* restore original irq */
if (nv_request_irq(dev, 0))
return 0;
}
return ret;
}
static int nv_loopback_test(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
struct sk_buff *tx_skb, *rx_skb;
dma_addr_t test_dma_addr;
u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
u32 flags;
int len, i, pkt_len;
u8 *pkt_data;
u32 filter_flags = 0;
u32 misc1_flags = 0;
int ret = 1;
if (netif_running(dev)) {
nv_disable_irq(dev);
filter_flags = readl(base + NvRegPacketFilterFlags);
misc1_flags = readl(base + NvRegMisc1);
} else {
nv_txrx_reset(dev);
}
/* reinit driver view of the rx queue */
set_bufsize(dev);
nv_init_ring(dev);
/* setup hardware for loopback */
writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
/* reinit nic view of the rx queue */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
/* restart rx engine */
nv_start_rxtx(dev);
/* setup packet for tx */
pkt_len = ETH_DATA_LEN;
tx_skb = dev_alloc_skb(pkt_len);
if (!tx_skb) {
netdev_err(dev, "dev_alloc_skb() failed during loopback test\n");
ret = 0;
goto out;
}
test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
skb_tailroom(tx_skb),
PCI_DMA_FROMDEVICE);
pkt_data = skb_put(tx_skb, pkt_len);
for (i = 0; i < pkt_len; i++)
pkt_data[i] = (u8)(i & 0xff);
if (!nv_optimized(np)) {
np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
} else {
np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
}
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
pci_push(get_hwbase(dev));
msleep(500);
/* check for rx of the packet */
if (!nv_optimized(np)) {
flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
} else {
flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
}
if (flags & NV_RX_AVAIL) {
ret = 0;
} else if (np->desc_ver == DESC_VER_1) {
if (flags & NV_RX_ERROR)
ret = 0;
} else {
if (flags & NV_RX2_ERROR)
ret = 0;
}
if (ret) {
if (len != pkt_len) {
ret = 0;
} else {
rx_skb = np->rx_skb[0].skb;
for (i = 0; i < pkt_len; i++) {
if (rx_skb->data[i] != (u8)(i & 0xff)) {
ret = 0;
break;
}
}
}
}
pci_unmap_single(np->pci_dev, test_dma_addr,
(skb_end_pointer(tx_skb) - tx_skb->data),
PCI_DMA_TODEVICE);
dev_kfree_skb_any(tx_skb);
out:
/* stop engines */
nv_stop_rxtx(dev);
nv_txrx_reset(dev);
/* drain rx queue */
nv_drain_rxtx(dev);
if (netif_running(dev)) {
writel(misc1_flags, base + NvRegMisc1);
writel(filter_flags, base + NvRegPacketFilterFlags);
nv_enable_irq(dev);
}
return ret;
}
static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int result;
memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
if (!nv_link_test(dev)) {
test->flags |= ETH_TEST_FL_FAILED;
buffer[0] = 1;
}
if (test->flags & ETH_TEST_FL_OFFLINE) {
if (netif_running(dev)) {
netif_stop_queue(dev);
nv_napi_disable(dev);
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
spin_lock_irq(&np->lock);
nv_disable_hw_interrupts(dev, np->irqmask);
if (!(np->msi_flags & NV_MSI_X_ENABLED))
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
else
writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
/* stop engines */
nv_stop_rxtx(dev);
nv_txrx_reset(dev);
/* drain rx queue */
nv_drain_rxtx(dev);
spin_unlock_irq(&np->lock);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
}
if (!nv_register_test(dev)) {
test->flags |= ETH_TEST_FL_FAILED;
buffer[1] = 1;
}
result = nv_interrupt_test(dev);
if (result != 1) {
test->flags |= ETH_TEST_FL_FAILED;
buffer[2] = 1;
}
if (result == 0) {
/* bail out */
return;
}
if (!nv_loopback_test(dev)) {
test->flags |= ETH_TEST_FL_FAILED;
buffer[3] = 1;
}
if (netif_running(dev)) {
/* reinit driver view of the rx queue */
set_bufsize(dev);
if (nv_init_ring(dev)) {
if (!np->in_shutdown)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
}
/* reinit nic view of the rx queue */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
pci_push(base);
/* restart rx engine */
nv_start_rxtx(dev);
netif_start_queue(dev);
nv_napi_enable(dev);
nv_enable_hw_interrupts(dev, np->irqmask);
}
}
}
static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
{
switch (stringset) {
case ETH_SS_STATS:
memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
break;
case ETH_SS_TEST:
memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
break;
}
}
static const struct ethtool_ops ops = {
.get_drvinfo = nv_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_wol = nv_get_wol,
.set_wol = nv_set_wol,
.get_settings = nv_get_settings,
.set_settings = nv_set_settings,
.get_regs_len = nv_get_regs_len,
.get_regs = nv_get_regs,
.nway_reset = nv_nway_reset,
.set_tso = nv_set_tso,
.get_ringparam = nv_get_ringparam,
.set_ringparam = nv_set_ringparam,
.get_pauseparam = nv_get_pauseparam,
.set_pauseparam = nv_set_pauseparam,
.get_rx_csum = nv_get_rx_csum,
.set_rx_csum = nv_set_rx_csum,
.set_tx_csum = nv_set_tx_csum,
.set_sg = nv_set_sg,
.get_strings = nv_get_strings,
.get_ethtool_stats = nv_get_ethtool_stats,
.get_sset_count = nv_get_sset_count,
.self_test = nv_self_test,
};
static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
struct fe_priv *np = get_nvpriv(dev);
spin_lock_irq(&np->lock);
/* save vlan group */
np->vlangrp = grp;
if (grp) {
/* enable vlan on MAC */
np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;
} else {
/* disable vlan on MAC */
np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
}
writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
spin_unlock_irq(&np->lock);
}
/* The mgmt unit and driver use a semaphore to access the phy during init */
static int nv_mgmt_acquire_sema(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int i;
u32 tx_ctrl, mgmt_sema;
for (i = 0; i < 10; i++) {
mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
break;
msleep(500);
}
if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
return 0;
for (i = 0; i < 2; i++) {
tx_ctrl = readl(base + NvRegTransmitterControl);
tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
writel(tx_ctrl, base + NvRegTransmitterControl);
/* verify that semaphore was acquired */
tx_ctrl = readl(base + NvRegTransmitterControl);
if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
np->mgmt_sema = 1;
return 1;
} else
udelay(50);
}
return 0;
}
static void nv_mgmt_release_sema(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 tx_ctrl;
if (np->driver_data & DEV_HAS_MGMT_UNIT) {
if (np->mgmt_sema) {
tx_ctrl = readl(base + NvRegTransmitterControl);
tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
writel(tx_ctrl, base + NvRegTransmitterControl);
}
}
}
static int nv_mgmt_get_version(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
u32 data_ready = readl(base + NvRegTransmitterControl);
u32 data_ready2 = 0;
unsigned long start;
int ready = 0;
writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
start = jiffies;
while (time_before(jiffies, start + 5*HZ)) {
data_ready2 = readl(base + NvRegTransmitterControl);
if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
ready = 1;
break;
}
schedule_timeout_uninterruptible(1);
}
if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
return 0;
np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
return 1;
}
static int nv_open(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int ret = 1;
int oom, i;
u32 low;
/* power up phy */
mii_rw(dev, np->phyaddr, MII_BMCR,
mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
nv_txrx_gate(dev, false);
/* erase previous misconfiguration */
if (np->driver_data & DEV_HAS_POWER_CNTRL)
nv_mac_reset(dev);
writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
writel(0, base + NvRegMulticastAddrB);
writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
writel(0, base + NvRegPacketFilterFlags);
writel(0, base + NvRegTransmitterControl);
writel(0, base + NvRegReceiverControl);
writel(0, base + NvRegAdapterControl);
if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
/* initialize descriptor rings */
set_bufsize(dev);
oom = nv_init_ring(dev);
writel(0, base + NvRegLinkSpeed);
writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
nv_txrx_reset(dev);
writel(0, base + NvRegUnknownSetupReg6);
np->in_shutdown = 0;
/* give hw rings */
setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
writel(np->linkspeed, base + NvRegLinkSpeed);
if (np->desc_ver == DESC_VER_1)
writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
else
writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
writel(np->txrxctl_bits, base + NvRegTxRxControl);
writel(np->vlanctl_bits, base + NvRegVlanControl);
pci_push(base);
writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
if (reg_delay(dev, NvRegUnknownSetupReg5,
NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
netdev_info(dev,
"%s: SetupReg5, Bit 31 remained off\n", __func__);
writel(0, base + NvRegMIIMask);
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
get_random_bytes(&low, sizeof(low));
low &= NVREG_SLOTTIME_MASK;
if (np->desc_ver == DESC_VER_1) {
writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
} else {
if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
/* setup legacy backoff */
writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
} else {
writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
nv_gear_backoff_reseed(dev);
}
}
writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
if (poll_interval == -1) {
if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
else
writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
} else
writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
base + NvRegAdapterControl);
writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
if (np->wolenabled)
writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
i = readl(base + NvRegPowerState);
if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
pci_push(base);
udelay(10);
writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
nv_disable_hw_interrupts(dev, np->irqmask);
pci_push(base);
writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
pci_push(base);
if (nv_request_irq(dev, 0))
goto out_drain;
/* ask for interrupts */
nv_enable_hw_interrupts(dev, np->irqmask);
spin_lock_irq(&np->lock);
writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
writel(0, base + NvRegMulticastAddrB);
writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
/* One manual link speed update: Interrupts are enabled, future link
* speed changes cause interrupts and are handled by nv_link_irq().
*/
{
u32 miistat;
miistat = readl(base + NvRegMIIStatus);
writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
}
/* set linkspeed to invalid value, thus force nv_update_linkspeed
* to init hw */
np->linkspeed = 0;
ret = nv_update_linkspeed(dev);
nv_start_rxtx(dev);
netif_start_queue(dev);
nv_napi_enable(dev);
if (ret) {
netif_carrier_on(dev);
} else {
netdev_info(dev, "no link during initialization\n");
netif_carrier_off(dev);
}
if (oom)
mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
/* start statistics timer */
if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
mod_timer(&np->stats_poll,
round_jiffies(jiffies + STATS_INTERVAL));
spin_unlock_irq(&np->lock);
return 0;
out_drain:
nv_drain_rxtx(dev);
return ret;
}
static int nv_close(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base;
spin_lock_irq(&np->lock);
np->in_shutdown = 1;
spin_unlock_irq(&np->lock);
nv_napi_disable(dev);
synchronize_irq(np->pci_dev->irq);
del_timer_sync(&np->oom_kick);
del_timer_sync(&np->nic_poll);
del_timer_sync(&np->stats_poll);
netif_stop_queue(dev);
spin_lock_irq(&np->lock);
nv_stop_rxtx(dev);
nv_txrx_reset(dev);
/* disable interrupts on the nic or we will lock up */
base = get_hwbase(dev);
nv_disable_hw_interrupts(dev, np->irqmask);
pci_push(base);
spin_unlock_irq(&np->lock);
nv_free_irq(dev);
nv_drain_rxtx(dev);
if (np->wolenabled || !phy_power_down) {
nv_txrx_gate(dev, false);
writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
nv_start_rx(dev);
} else {
/* power down phy */
mii_rw(dev, np->phyaddr, MII_BMCR,
mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
nv_txrx_gate(dev, true);
}
/* FIXME: power down nic */
return 0;
}
static const struct net_device_ops nv_netdev_ops = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
.ndo_get_stats = nv_get_stats,
.ndo_start_xmit = nv_start_xmit,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = nv_set_mac_address,
.ndo_set_multicast_list = nv_set_multicast,
.ndo_vlan_rx_register = nv_vlan_rx_register,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = nv_poll_controller,
#endif
};
static const struct net_device_ops nv_netdev_ops_optimized = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
.ndo_get_stats = nv_get_stats,
.ndo_start_xmit = nv_start_xmit_optimized,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = nv_set_mac_address,
.ndo_set_multicast_list = nv_set_multicast,
.ndo_vlan_rx_register = nv_vlan_rx_register,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = nv_poll_controller,
#endif
};
static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
{
struct net_device *dev;
struct fe_priv *np;
unsigned long addr;
u8 __iomem *base;
int err, i;
u32 powerstate, txreg;
u32 phystate_orig = 0, phystate;
int phyinitialized = 0;
static int printed_version;
if (!printed_version++)
pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
FORCEDETH_VERSION);
dev = alloc_etherdev(sizeof(struct fe_priv));
err = -ENOMEM;
if (!dev)
goto out;
np = netdev_priv(dev);
np->dev = dev;
np->pci_dev = pci_dev;
spin_lock_init(&np->lock);
SET_NETDEV_DEV(dev, &pci_dev->dev);
init_timer(&np->oom_kick);
np->oom_kick.data = (unsigned long) dev;
np->oom_kick.function = nv_do_rx_refill; /* timer handler */
init_timer(&np->nic_poll);
np->nic_poll.data = (unsigned long) dev;
np->nic_poll.function = nv_do_nic_poll; /* timer handler */
init_timer(&np->stats_poll);
np->stats_poll.data = (unsigned long) dev;
np->stats_poll.function = nv_do_stats_poll; /* timer handler */
err = pci_enable_device(pci_dev);
if (err)
goto out_free;
pci_set_master(pci_dev);
err = pci_request_regions(pci_dev, DRV_NAME);
if (err < 0)
goto out_disable;
if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
np->register_size = NV_PCI_REGSZ_VER3;
else if (id->driver_data & DEV_HAS_STATISTICS_V1)
np->register_size = NV_PCI_REGSZ_VER2;
else
np->register_size = NV_PCI_REGSZ_VER1;
err = -EINVAL;
addr = 0;
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
pci_resource_len(pci_dev, i) >= np->register_size) {
addr = pci_resource_start(pci_dev, i);
break;
}
}
if (i == DEVICE_COUNT_RESOURCE) {
dev_info(&pci_dev->dev, "Couldn't find register window\n");
goto out_relreg;
}
/* copy of driver data */
np->driver_data = id->driver_data;
/* copy of device id */
np->device_id = id->device;
/* handle different descriptor versions */
if (id->driver_data & DEV_HAS_HIGH_DMA) {
/* packet format 3: supports 40-bit addressing */
np->desc_ver = DESC_VER_3;
np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
if (dma_64bit) {
if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
dev_info(&pci_dev->dev,
"64-bit DMA failed, using 32-bit addressing\n");
else
dev->features |= NETIF_F_HIGHDMA;
if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
dev_info(&pci_dev->dev,
"64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
}
}
} else if (id->driver_data & DEV_HAS_LARGEDESC) {
/* packet format 2: supports jumbo frames */
np->desc_ver = DESC_VER_2;
np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
} else {
/* original packet format */
np->desc_ver = DESC_VER_1;
np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
}
np->pkt_limit = NV_PKTLIMIT_1;
if (id->driver_data & DEV_HAS_LARGEDESC)
np->pkt_limit = NV_PKTLIMIT_2;
if (id->driver_data & DEV_HAS_CHECKSUM) {
np->rx_csum = 1;
np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
dev->features |= NETIF_F_TSO;
dev->features |= NETIF_F_GRO;
}
np->vlanctl_bits = 0;
if (id->driver_data & DEV_HAS_VLAN) {
np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
}
np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
(id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
(id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
}
err = -ENOMEM;
np->base = ioremap(addr, np->register_size);
if (!np->base)
goto out_relreg;
dev->base_addr = (unsigned long)np->base;
dev->irq = pci_dev->irq;
np->rx_ring_size = RX_RING_DEFAULT;
np->tx_ring_size = TX_RING_DEFAULT;
if (!nv_optimized(np)) {
np->rx_ring.orig = pci_alloc_consistent(pci_dev,
sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
&np->ring_addr);
if (!np->rx_ring.orig)
goto out_unmap;
np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
} else {
np->rx_ring.ex = pci_alloc_consistent(pci_dev,
sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
&np->ring_addr);
if (!np->rx_ring.ex)
goto out_unmap;
np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
}
np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
if (!np->rx_skb || !np->tx_skb)
goto out_freering;
if (!nv_optimized(np))
dev->netdev_ops = &nv_netdev_ops;
else
dev->netdev_ops = &nv_netdev_ops_optimized;
netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
SET_ETHTOOL_OPS(dev, &ops);
dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
pci_set_drvdata(pci_dev, dev);
/* read the mac address */
base = get_hwbase(dev);
np->orig_mac[0] = readl(base + NvRegMacAddrA);
np->orig_mac[1] = readl(base + NvRegMacAddrB);
/* check the workaround bit for correct mac address order */
txreg = readl(base + NvRegTransmitPoll);
if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
/* mac address is already in correct order */
dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
} else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
/* mac address is already in correct order */
dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
/*
* Set orig mac address back to the reversed version.
* This flag will be cleared during low power transition.
* Therefore, we should always put back the reversed address.
*/
np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
(dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
} else {
/* need to reverse mac address to correct order */
dev->dev_addr[0] = (np->orig_mac[1] >> 8) & 0xff;
dev->dev_addr[1] = (np->orig_mac[1] >> 0) & 0xff;
dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
dev->dev_addr[4] = (np->orig_mac[0] >> 8) & 0xff;
dev->dev_addr[5] = (np->orig_mac[0] >> 0) & 0xff;
writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
dev_dbg(&pci_dev->dev,
"%s: set workaround bit for reversed mac addr\n",
__func__);
}
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
if (!is_valid_ether_addr(dev->perm_addr)) {
/*
* Bad mac address. At least one bios sets the mac address
* to 01:23:45:67:89:ab
*/
dev_err(&pci_dev->dev,
"Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
dev->dev_addr);
random_ether_addr(dev->dev_addr);
dev_err(&pci_dev->dev,
"Using random MAC address: %pM\n", dev->dev_addr);
}
/* set mac address */
nv_copy_mac_to_hw(dev);
/* disable WOL */
writel(0, base + NvRegWakeUpFlags);
np->wolenabled = 0;
device_set_wakeup_enable(&pci_dev->dev, false);
if (id->driver_data & DEV_HAS_POWER_CNTRL) {
/* take phy and nic out of low power mode */
powerstate = readl(base + NvRegPowerState2);
powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
pci_dev->revision >= 0xA3)
powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
writel(powerstate, base + NvRegPowerState2);
}
if (np->desc_ver == DESC_VER_1)
np->tx_flags = NV_TX_VALID;
else
np->tx_flags = NV_TX2_VALID;
np->msi_flags = 0;
if ((id->driver_data & DEV_HAS_MSI) && msi)
np->msi_flags |= NV_MSI_CAPABLE;
if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
/* msix has had reported issues when modifying irqmask
as in the case of napi, therefore, disable for now
*/
#if 0
np->msi_flags |= NV_MSI_X_CAPABLE;
#endif
}
if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
np->irqmask = NVREG_IRQMASK_CPU;
if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
np->msi_flags |= 0x0001;
} else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
!(id->driver_data & DEV_NEED_TIMERIRQ)) {
/* start off in throughput mode */
np->irqmask = NVREG_IRQMASK_THROUGHPUT;
/* remove support for msix mode */
np->msi_flags &= ~NV_MSI_X_CAPABLE;
} else {
optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
np->irqmask = NVREG_IRQMASK_THROUGHPUT;
if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
np->msi_flags |= 0x0003;
}
if (id->driver_data & DEV_NEED_TIMERIRQ)
np->irqmask |= NVREG_IRQ_TIMER;
if (id->driver_data & DEV_NEED_LINKTIMER) {
np->need_linktimer = 1;
np->link_timeout = jiffies + LINK_TIMEOUT;
} else {
np->need_linktimer = 0;
}
/* Limit the number of tx's outstanding for hw bug */
if (id->driver_data & DEV_NEED_TX_LIMIT) {
np->tx_limit = 1;
if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
pci_dev->revision >= 0xA2)
np->tx_limit = 0;
}
/* clear phy state and temporarily halt phy interrupts */
writel(0, base + NvRegMIIMask);
phystate = readl(base + NvRegAdapterControl);
if (phystate & NVREG_ADAPTCTL_RUNNING) {
phystate_orig = 1;
phystate &= ~NVREG_ADAPTCTL_RUNNING;
writel(phystate, base + NvRegAdapterControl);
}
writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
if (id->driver_data & DEV_HAS_MGMT_UNIT) {
/* management unit running on the mac? */
if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
(readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
nv_mgmt_acquire_sema(dev) &&
nv_mgmt_get_version(dev)) {
np->mac_in_use = 1;
if (np->mgmt_version > 0)
np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
/* management unit setup the phy already? */
if (np->mac_in_use &&
((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
NVREG_XMITCTL_SYNC_PHY_INIT)) {
/* phy is inited by mgmt unit */
phyinitialized = 1;
} else {
/* we need to init the phy */
}
}
}
/* find a suitable phy */
for (i = 1; i <= 32; i++) {
int id1, id2;
int phyaddr = i & 0x1F;
spin_lock_irq(&np->lock);
id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
spin_unlock_irq(&np->lock);
if (id1 < 0 || id1 == 0xffff)
continue;
spin_lock_irq(&np->lock);
id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
spin_unlock_irq(&np->lock);
if (id2 < 0 || id2 == 0xffff)
continue;
np->phy_model = id2 & PHYID2_MODEL_MASK;
id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
np->phyaddr = phyaddr;
np->phy_oui = id1 | id2;
/* Realtek hardcoded phy id1 to all zero's on certain phys */
if (np->phy_oui == PHY_OUI_REALTEK2)
np->phy_oui = PHY_OUI_REALTEK;
/* Setup phy revision for Realtek */
if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
break;
}
if (i == 33) {
dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
goto out_error;
}
if (!phyinitialized) {
/* reset it */
phy_init(dev);
} else {
/* see if it is a gigabit phy */
u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
if (mii_status & PHY_GIGABIT)
np->gigabit = PHY_GIGABIT;
}
/* set default link speed settings */
np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
np->duplex = 0;
np->autoneg = 1;
err = register_netdev(dev);
if (err) {
dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
goto out_error;
}
dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
"csum " : "",
dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
"vlan " : "",
id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
np->gigabit == PHY_GIGABIT ? "gbit " : "",
np->need_linktimer ? "lnktim " : "",
np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
np->desc_ver);
return 0;
out_error:
if (phystate_orig)
writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
pci_set_drvdata(pci_dev, NULL);
out_freering:
free_rings(dev);
out_unmap:
iounmap(get_hwbase(dev));
out_relreg:
pci_release_regions(pci_dev);
out_disable:
pci_disable_device(pci_dev);
out_free:
free_netdev(dev);
out:
return err;
}
static void nv_restore_phy(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u16 phy_reserved, mii_control;
if (np->phy_oui == PHY_OUI_REALTEK &&
np->phy_model == PHY_MODEL_REALTEK_8201 &&
phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
phy_reserved |= PHY_REALTEK_INIT8;
mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
/* restart auto negotiation */
mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
}
}
static void nv_restore_mac_addr(struct pci_dev *pci_dev)
{
struct net_device *dev = pci_get_drvdata(pci_dev);
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
/* special op: write back the misordered MAC address - otherwise
* the next nv_probe would see a wrong address.
*/
writel(np->orig_mac[0], base + NvRegMacAddrA);
writel(np->orig_mac[1], base + NvRegMacAddrB);
writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
base + NvRegTransmitPoll);
}
static void __devexit nv_remove(struct pci_dev *pci_dev)
{
struct net_device *dev = pci_get_drvdata(pci_dev);
unregister_netdev(dev);
nv_restore_mac_addr(pci_dev);
/* restore any phy related changes */
nv_restore_phy(dev);
nv_mgmt_release_sema(dev);
/* free all structures */
free_rings(dev);
iounmap(get_hwbase(dev));
pci_release_regions(pci_dev);
pci_disable_device(pci_dev);
free_netdev(dev);
pci_set_drvdata(pci_dev, NULL);
}
#ifdef CONFIG_PM
static int nv_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int i;
if (netif_running(dev)) {
/* Gross. */
nv_close(dev);
}
netif_device_detach(dev);
/* save non-pci configuration space */
for (i = 0; i <= np->register_size/sizeof(u32); i++)
np->saved_config_space[i] = readl(base + i*sizeof(u32));
return 0;
}
static int nv_resume(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int i, rc = 0;
/* restore non-pci configuration space */
for (i = 0; i <= np->register_size/sizeof(u32); i++)
writel(np->saved_config_space[i], base+i*sizeof(u32));
if (np->driver_data & DEV_NEED_MSI_FIX)
pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
/* restore phy state, including autoneg */
phy_init(dev);
netif_device_attach(dev);
if (netif_running(dev)) {
rc = nv_open(dev);
nv_set_multicast(dev);
}
return rc;
}
static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
#define NV_PM_OPS (&nv_pm_ops)
static void nv_shutdown(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct fe_priv *np = netdev_priv(dev);
if (netif_running(dev))
nv_close(dev);
/*
* Restore the MAC so a kernel started by kexec won't get confused.
* If we really go for poweroff, we must not restore the MAC,
* otherwise the MAC for WOL will be reversed at least on some boards.
*/
if (system_state != SYSTEM_POWER_OFF)
nv_restore_mac_addr(pdev);
pci_disable_device(pdev);
/*
* Apparently it is not possible to reinitialise from D3 hot,
* only put the device into D3 if we really go for poweroff.
*/
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, np->wolenabled);
pci_set_power_state(pdev, PCI_D3hot);
}
}
#else
#define NV_PM_OPS NULL
#define nv_shutdown NULL
#endif /* CONFIG_PM */
static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
{ /* nForce Ethernet Controller */
PCI_DEVICE(0x10DE, 0x01C3),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
},
{ /* nForce2 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0066),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
},
{ /* nForce3 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x00D6),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
},
{ /* nForce3 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0086),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
},
{ /* nForce3 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x008C),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
},
{ /* nForce3 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x00E6),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
},
{ /* nForce3 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x00DF),
.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
},
{ /* CK804 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0056),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
},
{ /* CK804 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0057),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
},
{ /* MCP04 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0037),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
},
{ /* MCP04 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0038),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
},
{ /* MCP51 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0268),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
},
{ /* MCP51 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0269),
.driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
},
{ /* MCP55 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0372),
.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,
},
{ /* MCP55 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0373),
.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,
},
{ /* MCP61 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x03E5),
.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,
},
{ /* MCP61 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x03E6),
.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,
},
{ /* MCP61 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x03EE),
.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,
},
{ /* MCP61 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x03EF),
.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,
},
{ /* MCP65 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0450),
.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,
},
{ /* MCP65 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0451),
.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,
},
{ /* MCP65 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0452),
.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,
},
{ /* MCP65 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0453),
.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,
},
{ /* MCP67 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x054C),
.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,
},
{ /* MCP67 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x054D),
.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,
},
{ /* MCP67 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x054E),
.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,
},
{ /* MCP67 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x054F),
.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,
},
{ /* MCP73 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x07DC),
.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,
},
{ /* MCP73 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x07DD),
.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,
},
{ /* MCP73 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x07DE),
.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,
},
{ /* MCP73 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x07DF),
.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,
},
{ /* MCP77 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0760),
.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,
},
{ /* MCP77 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0761),
.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,
},
{ /* MCP77 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0762),
.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,
},
{ /* MCP77 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0763),
.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,
},
{ /* MCP79 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0AB0),
.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,
},
{ /* MCP79 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0AB1),
.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,
},
{ /* MCP79 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0AB2),
.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,
},
{ /* MCP79 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0AB3),
.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,
},
{ /* MCP89 Ethernet Controller */
PCI_DEVICE(0x10DE, 0x0D7D),
.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,
},
{0,},
};
static struct pci_driver driver = {
.name = DRV_NAME,
.id_table = pci_tbl,
.probe = nv_probe,
.remove = __devexit_p(nv_remove),
.shutdown = nv_shutdown,
.driver.pm = NV_PM_OPS,
};
static int __init init_nic(void)
{
return pci_register_driver(&driver);
}
static void __exit exit_nic(void)
{
pci_unregister_driver(&driver);
}
module_param(max_interrupt_work, int, 0);
MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
module_param(optimization_mode, int, 0);
MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
module_param(poll_interval, int, 0);
MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
module_param(msi, int, 0);
MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
module_param(msix, int, 0);
MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
module_param(dma_64bit, int, 0);
MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
module_param(phy_cross, int, 0);
MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
module_param(phy_power_down, int, 0);
MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, pci_tbl);
module_init(init_nic);
module_exit(exit_nic);
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