3c59x.c

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	{ 0x10B7, 0x9805, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C9805 },

	{ 0x10B7, 0x7646, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CSOHO100_TX },
	{ 0x10B7, 0x5055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C555 },
	{ 0x10B7, 0x6055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C556 },
	{ 0x10B7, 0x6056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C556B },
	{ 0x10B7, 0x5b57, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C575 },

	{ 0x10B7, 0x5057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C575_1 },
	{ 0x10B7, 0x5157, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CCFE575 },
	{ 0x10B7, 0x5257, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CCFE575CT },
	{ 0x10B7, 0x6560, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CCFE656 },
	{ 0x10B7, 0x6562, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CCFEM656 },

	{ 0x10B7, 0x6564, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3CCFEM656_1 },
	{ 0x10B7, 0x4500, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C450 },
	{ 0x10B7, 0x9201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C920 },
	{ 0x10B7, 0x1201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C982A },
	{ 0x10B7, 0x1202, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_3C982B },

	{ 0x10B7, 0x9056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_905BT4 },
	{ 0x10B7, 0x9210, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_920B_EMB_WNM },

	{0,}						/* 0 terminated list. */
};
MODULE_DEVICE_TABLE(pci, vortex_pci_tbl);


/* Operational definitions.
   These are not used by other compilation units and thus are not
   exported in a ".h" file.

   First the windows.  There are eight register windows, with the command
   and status registers available in each.
   */
#define EL3WINDOW(win_num) iowrite16(SelectWindow + (win_num), ioaddr + EL3_CMD)
#define EL3_CMD 0x0e
#define EL3_STATUS 0x0e

/* The top five bits written to EL3_CMD are a command, the lower
   11 bits are the parameter, if applicable.
   Note that 11 parameters bits was fine for ethernet, but the new chip
   can handle FDDI length frames (~4500 octets) and now parameters count
   32-bit 'Dwords' rather than octets. */

enum vortex_cmd {
	TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
	RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11,
	UpStall = 6<<11, UpUnstall = (6<<11)+1,
	DownStall = (6<<11)+2, DownUnstall = (6<<11)+3,
	RxDiscard = 8<<11, TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
	FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
	SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
	SetTxThreshold = 18<<11, SetTxStart = 19<<11,
	StartDMAUp = 20<<11, StartDMADown = (20<<11)+1, StatsEnable = 21<<11,
	StatsDisable = 22<<11, StopCoax = 23<<11, SetFilterBit = 25<<11,};

/* The SetRxFilter command accepts the following classes: */
enum RxFilter {
	RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };

/* Bits in the general status register. */
enum vortex_status {
	IntLatch = 0x0001, HostError = 0x0002, TxComplete = 0x0004,
	TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
	IntReq = 0x0040, StatsFull = 0x0080,
	DMADone = 1<<8, DownComplete = 1<<9, UpComplete = 1<<10,
	DMAInProgress = 1<<11,			/* DMA controller is still busy.*/
	CmdInProgress = 1<<12,			/* EL3_CMD is still busy.*/
};

/* Register window 1 offsets, the window used in normal operation.
   On the Vortex this window is always mapped at offsets 0x10-0x1f. */
enum Window1 {
	TX_FIFO = 0x10,  RX_FIFO = 0x10,  RxErrors = 0x14,
	RxStatus = 0x18,  Timer=0x1A, TxStatus = 0x1B,
	TxFree = 0x1C, /* Remaining free bytes in Tx buffer. */
};
enum Window0 {
	Wn0EepromCmd = 10,		/* Window 0: EEPROM command register. */
	Wn0EepromData = 12,		/* Window 0: EEPROM results register. */
	IntrStatus=0x0E,		/* Valid in all windows. */
};
enum Win0_EEPROM_bits {
	EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0,
	EEPROM_EWENB = 0x30,		/* Enable erasing/writing for 10 msec. */
	EEPROM_EWDIS = 0x00,		/* Disable EWENB before 10 msec timeout. */
};
/* EEPROM locations. */
enum eeprom_offset {
	PhysAddr01=0, PhysAddr23=1, PhysAddr45=2, ModelID=3,
	EtherLink3ID=7, IFXcvrIO=8, IRQLine=9,
	NodeAddr01=10, NodeAddr23=11, NodeAddr45=12,
	DriverTune=13, Checksum=15};

enum Window2 {			/* Window 2. */
	Wn2_ResetOptions=12,
};
enum Window3 {			/* Window 3: MAC/config bits. */
	Wn3_Config=0, Wn3_MaxPktSize=4, Wn3_MAC_Ctrl=6, Wn3_Options=8,
};

#define BFEXT(value, offset, bitcount)  \
    ((((unsigned long)(value)) >> (offset)) & ((1 << (bitcount)) - 1))

#define BFINS(lhs, rhs, offset, bitcount)					\
	(((lhs) & ~((((1 << (bitcount)) - 1)) << (offset))) |	\
	(((rhs) & ((1 << (bitcount)) - 1)) << (offset)))

#define RAM_SIZE(v)		BFEXT(v, 0, 3)
#define RAM_WIDTH(v)	BFEXT(v, 3, 1)
#define RAM_SPEED(v)	BFEXT(v, 4, 2)
#define ROM_SIZE(v)		BFEXT(v, 6, 2)
#define RAM_SPLIT(v)	BFEXT(v, 16, 2)
#define XCVR(v)			BFEXT(v, 20, 4)
#define AUTOSELECT(v)	BFEXT(v, 24, 1)

enum Window4 {		/* Window 4: Xcvr/media bits. */
	Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10,
};
enum Win4_Media_bits {
	Media_SQE = 0x0008,		/* Enable SQE error counting for AUI. */
	Media_10TP = 0x00C0,	/* Enable link beat and jabber for 10baseT. */
	Media_Lnk = 0x0080,		/* Enable just link beat for 100TX/100FX. */
	Media_LnkBeat = 0x0800,
};
enum Window7 {					/* Window 7: Bus Master control. */
	Wn7_MasterAddr = 0, Wn7_VlanEtherType=4, Wn7_MasterLen = 6,
	Wn7_MasterStatus = 12,
};
/* Boomerang bus master control registers. */
enum MasterCtrl {
	PktStatus = 0x20, DownListPtr = 0x24, FragAddr = 0x28, FragLen = 0x2c,
	TxFreeThreshold = 0x2f, UpPktStatus = 0x30, UpListPtr = 0x38,
};

/* The Rx and Tx descriptor lists.
   Caution Alpha hackers: these types are 32 bits!  Note also the 8 byte
   alignment contraint on tx_ring[] and rx_ring[]. */
#define LAST_FRAG 	0x80000000			/* Last Addr/Len pair in descriptor. */
#define DN_COMPLETE	0x00010000			/* This packet has been downloaded */
struct boom_rx_desc {
	__le32 next;					/* Last entry points to 0.   */
	__le32 status;
	__le32 addr;					/* Up to 63 addr/len pairs possible. */
	__le32 length;					/* Set LAST_FRAG to indicate last pair. */
};
/* Values for the Rx status entry. */
enum rx_desc_status {
	RxDComplete=0x00008000, RxDError=0x4000,
	/* See boomerang_rx() for actual error bits */
	IPChksumErr=1<<25, TCPChksumErr=1<<26, UDPChksumErr=1<<27,
	IPChksumValid=1<<29, TCPChksumValid=1<<30, UDPChksumValid=1<<31,
};

#ifdef MAX_SKB_FRAGS
#define DO_ZEROCOPY 1
#else
#define DO_ZEROCOPY 0
#endif

struct boom_tx_desc {
	__le32 next;					/* Last entry points to 0.   */
	__le32 status;					/* bits 0:12 length, others see below.  */
#if DO_ZEROCOPY
	struct {
		__le32 addr;
		__le32 length;
	} frag[1+MAX_SKB_FRAGS];
#else
		__le32 addr;
		__le32 length;
#endif
};

/* Values for the Tx status entry. */
enum tx_desc_status {
	CRCDisable=0x2000, TxDComplete=0x8000,
	AddIPChksum=0x02000000, AddTCPChksum=0x04000000, AddUDPChksum=0x08000000,
	TxIntrUploaded=0x80000000,		/* IRQ when in FIFO, but maybe not sent. */
};

/* Chip features we care about in vp->capabilities, read from the EEPROM. */
enum ChipCaps { CapBusMaster=0x20, CapPwrMgmt=0x2000 };

struct vortex_extra_stats {
	unsigned long tx_deferred;
	unsigned long tx_max_collisions;
	unsigned long tx_multiple_collisions;
	unsigned long tx_single_collisions;
	unsigned long rx_bad_ssd;
};

struct vortex_private {
	/* The Rx and Tx rings should be quad-word-aligned. */
	struct boom_rx_desc* rx_ring;
	struct boom_tx_desc* tx_ring;
	dma_addr_t rx_ring_dma;
	dma_addr_t tx_ring_dma;
	/* The addresses of transmit- and receive-in-place skbuffs. */
	struct sk_buff* rx_skbuff[RX_RING_SIZE];
	struct sk_buff* tx_skbuff[TX_RING_SIZE];
	unsigned int cur_rx, cur_tx;		/* The next free ring entry */
	unsigned int dirty_rx, dirty_tx;	/* The ring entries to be free()ed. */
	struct net_device_stats stats;		/* Generic stats */
	struct vortex_extra_stats xstats;	/* NIC-specific extra stats */
	struct sk_buff *tx_skb;				/* Packet being eaten by bus master ctrl.  */
	dma_addr_t tx_skb_dma;				/* Allocated DMA address for bus master ctrl DMA.   */

	/* PCI configuration space information. */
	struct device *gendev;
	void __iomem *ioaddr;			/* IO address space */
	void __iomem *cb_fn_base;		/* CardBus function status addr space. */

	/* Some values here only for performance evaluation and path-coverage */
	int rx_nocopy, rx_copy, queued_packet, rx_csumhits;
	int card_idx;

	/* The remainder are related to chip state, mostly media selection. */
	struct timer_list timer;			/* Media selection timer. */
	struct timer_list rx_oom_timer;		/* Rx skb allocation retry timer */
	int options;						/* User-settable misc. driver options. */
	unsigned int media_override:4, 		/* Passed-in media type. */
		default_media:4,				/* Read from the EEPROM/Wn3_Config. */
		full_duplex:1, autoselect:1,
		bus_master:1,					/* Vortex can only do a fragment bus-m. */
		full_bus_master_tx:1, full_bus_master_rx:2, /* Boomerang  */
		flow_ctrl:1,					/* Use 802.3x flow control (PAUSE only) */
		partner_flow_ctrl:1,			/* Partner supports flow control */
		has_nway:1,
		enable_wol:1,					/* Wake-on-LAN is enabled */
		pm_state_valid:1,				/* pci_dev->saved_config_space has sane contents */
		open:1,
		medialock:1,
		must_free_region:1,				/* Flag: if zero, Cardbus owns the I/O region */
		large_frames:1;			/* accept large frames */
	int drv_flags;
	u16 status_enable;
	u16 intr_enable;
	u16 available_media;				/* From Wn3_Options. */
	u16 capabilities, info1, info2;		/* Various, from EEPROM. */
	u16 advertising;					/* NWay media advertisement */
	unsigned char phys[2];				/* MII device addresses. */
	u16 deferred;						/* Resend these interrupts when we
										 * bale from the ISR */
	u16 io_size;						/* Size of PCI region (for release_region) */
	spinlock_t lock;					/* Serialise access to device & its vortex_private */
	struct mii_if_info mii;				/* MII lib hooks/info */
};

#ifdef CONFIG_PCI
#define DEVICE_PCI(dev) (((dev)->bus == &pci_bus_type) ? to_pci_dev((dev)) : NULL)
#else
#define DEVICE_PCI(dev) NULL
#endif

#define VORTEX_PCI(vp) (((vp)->gendev) ? DEVICE_PCI((vp)->gendev) : NULL)

#ifdef CONFIG_EISA
#define DEVICE_EISA(dev) (((dev)->bus == &eisa_bus_type) ? to_eisa_device((dev)) : NULL)
#else
#define DEVICE_EISA(dev) NULL
#endif

#define VORTEX_EISA(vp) (((vp)->gendev) ? DEVICE_EISA((vp)->gendev) : NULL)

/* The action to take with a media selection timer tick.
   Note that we deviate from the 3Com order by checking 10base2 before AUI.
 */
enum xcvr_types {
	XCVR_10baseT=0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx,
	XCVR_100baseFx, XCVR_MII=6, XCVR_NWAY=8, XCVR_ExtMII=9, XCVR_Default=10,
};

static const struct media_table {
	char *name;
	unsigned int media_bits:16,		/* Bits to set in Wn4_Media register. */
		mask:8,						/* The transceiver-present bit in Wn3_Config.*/
		next:8;						/* The media type to try next. */
	int wait;						/* Time before we check media status. */
} media_tbl[] = {
  {	"10baseT",   Media_10TP,0x08, XCVR_10base2, (14*HZ)/10},
  { "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1*HZ)/10},
  { "undefined", 0,			0x80, XCVR_10baseT, 10000},
  { "10base2",   0,			0x10, XCVR_AUI,		(1*HZ)/10},
  { "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx, (14*HZ)/10},
  { "100baseFX", Media_Lnk, 0x04, XCVR_MII,		(14*HZ)/10},
  { "MII",		 0,			0x41, XCVR_10baseT, 3*HZ },
  { "undefined", 0,			0x01, XCVR_10baseT, 10000},
  { "Autonegotiate", 0,		0x41, XCVR_10baseT, 3*HZ},
  { "MII-External",	 0,		0x41, XCVR_10baseT, 3*HZ },
  { "Default",	 0,			0xFF, XCVR_10baseT, 10000},
};

static struct {
	const char str[ETH_GSTRING_LEN];
} ethtool_stats_keys[] = {
	{ "tx_deferred" },
	{ "tx_max_collisions" },
	{ "tx_multiple_collisions" },
	{ "tx_single_collisions" },
	{ "rx_bad_ssd" },
};

/* number of ETHTOOL_GSTATS u64's */
#define VORTEX_NUM_STATS    5

static int vortex_probe1(struct device *gendev, void __iomem *ioaddr, int irq,
				   int chip_idx, int card_idx);
static int vortex_up(struct net_device *dev);
static void vortex_down(struct net_device *dev, int final);
static int vortex_open(struct net_device *dev);
static void mdio_sync(void __iomem *ioaddr, int bits);
static int mdio_read(struct net_device *dev, int phy_id, int location);
static void mdio_write(struct net_device *vp, int phy_id, int location, int value);
static void vortex_timer(unsigned long arg);
static void rx_oom_timer(unsigned long arg);
static int vortex_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int vortex_rx(struct net_device *dev);
static int boomerang_rx(struct net_device *dev);
static irqreturn_t vortex_interrupt(int irq, void *dev_id);
static irqreturn_t boomerang_interrupt(int irq, void *dev_id);
static int vortex_close(struct net_device *dev);
static void dump_tx_ring(struct net_device *dev);
static void update_stats(void __iomem *ioaddr, struct net_device *dev);
static struct net_device_stats *vortex_get_stats(struct net_device *dev);
static void set_rx_mode(struct net_device *dev);
#ifdef CONFIG_PCI
static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
#endif
static void vortex_tx_timeout(struct net_device *dev);
static void acpi_set_WOL(struct net_device *dev);
static const struct ethtool_ops vortex_ethtool_ops;
static void set_8021q_mode(struct net_device *dev, int enable);

/* This driver uses 'options' to pass the media type, full-duplex flag, etc. */
/* Option count limit only -- unlimited interfaces are supported. */
#define MAX_UNITS 8
static int options[MAX_UNITS] = { [0 ... MAX_UNITS-1] = -1 };
static int full_duplex[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 };
static int hw_checksums[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 };
static int flow_ctrl[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 };
static int enable_wol[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 };
static int use_mmio[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 };
static int global_options = -1;
static int global_full_duplex = -1;
static int global_enable_wol = -1;
static int global_use_mmio = -1;

/* Variables to work-around the Compaq PCI BIOS32 problem. */
static int compaq_ioaddr, compaq_irq, compaq_device_id = 0x5900;
static struct net_device *compaq_net_device;

static int vortex_cards_found;

module_param(debug, int, 0);
module_param(global_options, int, 0);
module_param_array(options, int, NULL, 0);
module_param(global_full_duplex, int, 0);
module_param_array(full_duplex, int, NULL, 0);
module_param_array(hw_checksums, int, NULL, 0);
module_param_array(flow_ctrl, int, NULL, 0);
module_param(global_enable_wol, int, 0);
module_param_array(enable_wol, int, NULL, 0);
module_param(rx_copybreak, int, 0);
module_param(max_interrupt_work, int, 0);
module_param(compaq_ioaddr, int, 0);
module_param(compaq_irq, int, 0);
module_param(compaq_device_id, int, 0);
module_param(watchdog, int, 0);
module_param(global_use_mmio, int, 0);
module_param_array(use_mmio, int, NULL, 0);
MODULE_PARM_DESC(debug, "3c59x debug level (0-6)");
MODULE_PARM_DESC(options, "3c59x: Bits 0-3: media type, bit 4: bus mastering, bit 9: full duplex");
MODULE_PARM_DESC(global_options, "3c59x: same as options, but applies to all NICs if options is unset");
MODULE_PARM_DESC(full_duplex, "3c59x full duplex setting(s) (1)");
MODULE_PARM_DESC(global_full_duplex, "3c59x: same as full_duplex, but applies to all NICs if full_duplex is unset");
MODULE_PARM_DESC(hw_checksums, "3c59x Hardware checksum checking by adapter(s) (0-1)");
MODULE_PARM_DESC(flow_ctrl, "3c59x 802.3x flow control usage (PAUSE only) (0-1)");
MODULE_PARM_DESC(enable_wol, "3c59x: Turn on Wake-on-LAN for adapter(s) (0-1)");
MODULE_PARM_DESC(global_enable_wol, "3c59x: same as enable_wol, but applies to all NICs if enable_wol is unset");
MODULE_PARM_DESC(rx_copybreak, "3c59x copy breakpoint for copy-only-tiny-frames");
MODULE_PARM_DESC(max_interrupt_work, "3c59x maximum events handled per interrupt");
MODULE_PARM_DESC(compaq_ioaddr, "3c59x PCI I/O base address (Compaq BIOS problem workaround)");
MODULE_PARM_DESC(compaq_irq, "3c59x PCI IRQ number (Compaq BIOS problem workaround)");
MODULE_PARM_DESC(compaq_device_id, "3c59x PCI device ID (Compaq BIOS problem workaround)");
MODULE_PARM_DESC(watchdog, "3c59x transmit timeout in milliseconds");
MODULE_PARM_DESC(global_use_mmio, "3c59x: same as use_mmio, but applies to all NICs if options is unset");
MODULE_PARM_DESC(use_mmio, "3c59x: use memory-mapped PCI I/O resource (0-1)");

#ifdef CONFIG_NET_POLL_CONTROLLER
static void poll_vortex(struct net_device *dev)
{
	struct vortex_private *vp = netdev_priv(dev);
	unsigned long flags;
	local_irq_save(flags);
	(vp->full_bus_master_rx ? boomerang_interrupt:vortex_interrupt)(dev->irq,dev);