forcedeth.c

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#define DEV_HAS_CHECKSUM           0x00010  /* device supports tx and rx checksum offloads */
#define DEV_HAS_VLAN               0x00020  /* device supports vlan tagging and striping */
#define DEV_HAS_MSI                0x00040  /* device supports MSI */
#define DEV_HAS_MSI_X              0x00080  /* device supports MSI-X */
#define DEV_HAS_POWER_CNTRL        0x00100  /* device supports power savings */
#define DEV_HAS_STATISTICS_V1      0x00200  /* device supports hw statistics version 1 */
#define DEV_HAS_STATISTICS_V2      0x00400  /* device supports hw statistics version 2 */
#define DEV_HAS_TEST_EXTENDED      0x00800  /* device supports extended diagnostic test */
#define DEV_HAS_MGMT_UNIT          0x01000  /* device supports management unit */
#define DEV_HAS_CORRECT_MACADDR    0x02000  /* device supports correct mac address */
#define DEV_HAS_COLLISION_FIX      0x04000  /* device supports tx collision fix */
#define DEV_HAS_PAUSEFRAME_TX_V1   0x08000  /* device supports tx pause frames version 1 */
#define DEV_HAS_PAUSEFRAME_TX_V2   0x10000  /* device supports tx pause frames version 2 */
#define DEV_HAS_PAUSEFRAME_TX_V3   0x20000  /* device supports tx pause frames version 3 */


#define NVIDIA_ETHERNET_ID(deviceid,nv_driver_data) {\
	.vendor = PCI_VENDOR_ID_NVIDIA, \
	.device = deviceid, \
	.subvendor = PCI_ANY_ID, \
	.subdevice = PCI_ANY_ID, \
	.driver_data = nv_driver_data, \
},

#define Mv_LED_Control 16
#define Mv_Page_Address 22
#define Mv_LED_FORCE_OFF 0x88
#define Mv_LED_DUAL_MODE3 0x40

struct nvmsi_msg{
	u32 address_lo;
	u32 address_hi;
	u32 data;
};

enum {
	NvRegIrqStatus = 0x000,
#define NVREG_IRQSTAT_MIIEVENT	0x040
#define NVREG_IRQSTAT_MASK		0x81ff
	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		0x8000
#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)

#define NVREG_IRQ_UNKNOWN	(~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
			NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \
			NVREG_IRQ_TX_FORCED|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	970
#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
	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

	NvRegRandomSeed = 0x9c,
#define NVREG_RNDSEED_MASK	0x00ff
#define NVREG_RNDSEED_FORCE	0x7f00
#define NVREG_RNDSEED_FORCE2	0x2d00
#define NVREG_RNDSEED_FORCE3	0x7400

	NvRegTxDeferral = 0xA0,
#define NVREG_TX_DEFERRAL_DEFAULT      	0x15050f
#define NVREG_TX_DEFERRAL_RGMII_10_100	0x16070f
#define NVREG_TX_DEFERRAL_RGMII_1000	0x14050f
	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

	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 	0x01ff0080
#define NVREG_TX_PAUSEFRAME_ENABLE_V1 	0x01800010
#define NVREG_TX_PAUSEFRAME_ENABLE_V2 	0x056003f0
#define NVREG_TX_PAUSEFRAME_ENABLE_V3 	0x09f00880
	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,
	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

	NvRegPatternCRC = 0x204,
#define NV_UNKNOWN_VAL  0x01
	NvRegPatternMask = 0x208,
	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
	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		0x0F11
#define NVREG_POWERSTATE2_POWERUP_REV_A3	0x0001
};

/* Big endian: should work, but is untested */
struct ring_desc {
	u32 PacketBuffer;
	u32 FlagLen;
};

struct ring_desc_ex {
	u32 PacketBufferHigh;
	u32 PacketBufferLow;
	u32 TxVlan;
	u32 FlagLen;
};

typedef union _ring_type {
	struct ring_desc* orig;
	struct ring_desc_ex* ex;
} ring_type;

#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_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) /* logical OR of all errors */
#define NV_TX_VALID		(1<<31)

#define NV_TX2_LASTPACKET	(1<<29)
#define NV_TX2_RETRYERROR	(1<<18)
#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) /* logical OR of all errors */
#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) /* logical OR of all errors */
#define NV_RX_AVAIL		(1<<31)

#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) /* logical OR of all errors */
#define NV_RX2_AVAIL		(1<<31)

#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

/* 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		128
#define TX_RING_DEFAULT		64
#define RX_RING_MIN		RX_RING_DEFAULT
#define TX_RING_MIN		TX_RING_DEFAULT
#define RING_MAX_DESC_VER_1	1024
#define RING_MAX_DESC_VER_2_3	16384
/* 
 * Difference between the get and put pointers for the tx ring.
 * This is used to throttle the amount of data outstanding in the
 * tx ring.
 */
#define TX_LIMIT_DIFFERENCE	1

/* 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 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_MARVELL_E3016		0x220
#define PHY_MODEL_MARVELL_E1011		0xb0
#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