3c59x.c

linux和2410结合开发 用他可以生成2410所需的zImage文件

	struct sk_buff* tx_skbuff[TX_RING_SIZE];
	struct net_device *next_module;		/* NULL if PCI device */
	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;
	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 pci_dev *pdev;
	char *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, force_fd: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,				/* power_state[] has sane contents */
		open:1,
		medialock:1,
		must_free_region:1;				/* Flag: if zero, Cardbus owns the I/O region */
	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 */
	spinlock_t mdio_lock;				/* Serialise access to mdio hardware */
	u32 power_state[16];
};

/* 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 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 int vortex_probe1(struct pci_dev *pdev, long ioaddr, int irq,
				   int chip_idx, int card_idx);
static void vortex_up(struct net_device *dev);
static void vortex_down(struct net_device *dev);
static int vortex_open(struct net_device *dev);
static void mdio_sync(long 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 void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static void boomerang_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static int vortex_close(struct net_device *dev);
static void dump_tx_ring(struct net_device *dev);
static void update_stats(long 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);
static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void vortex_tx_timeout(struct net_device *dev);
static void acpi_set_WOL(struct net_device *dev);

/* 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] = { -1, -1, -1, -1, -1, -1, -1, -1,};
static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
static int hw_checksums[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
static int flow_ctrl[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
static int enable_wol[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};

/* #define dev_alloc_skb dev_alloc_skb_debug */

/* A list of all installed Vortex EISA devices, for removing the driver module. */
static struct net_device *root_vortex_eisa_dev;

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

static int vortex_cards_found;

#ifdef CONFIG_PM

static int vortex_suspend (struct pci_dev *pdev, u32 state)
{
	struct net_device *dev = pci_get_drvdata(pdev);

	if (dev && dev->priv) {
		if (netif_running(dev)) {
			netif_device_detach(dev);
			vortex_down(dev);
		}
	}
	return 0;
}

static int vortex_resume (struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata(pdev);

	if (dev && dev->priv) {
		if (netif_running(dev)) {
			vortex_up(dev);
			netif_device_attach(dev);
		}
	}
	return 0;
}

#endif /* CONFIG_PM */

/* returns count found (>= 0), or negative on error */
static int __init vortex_eisa_init (void)
{
	long ioaddr;
	int rc;
	int orig_cards_found = vortex_cards_found;

	/* Now check all slots of the EISA bus. */
	if (!EISA_bus)
		return 0;

	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
		int device_id;

		if (request_region(ioaddr, VORTEX_TOTAL_SIZE, DRV_NAME) == NULL)
			continue;

		/* Check the standard EISA ID register for an encoded '3Com'. */
		if (inw(ioaddr + 0xC80) != 0x6d50) {
			release_region (ioaddr, VORTEX_TOTAL_SIZE);
			continue;
		}

		/* Check for a product that we support, 3c59{2,7} any rev. */
		device_id = (inb(ioaddr + 0xC82)<<8) + inb(ioaddr + 0xC83);
		if ((device_id & 0xFF00) != 0x5900) {
			release_region (ioaddr, VORTEX_TOTAL_SIZE);
			continue;
		}

		rc = vortex_probe1(NULL, ioaddr, inw(ioaddr + 0xC88) >> 12,
				   EISA_TBL_OFFSET, vortex_cards_found);
		if (rc == 0)
			vortex_cards_found++;
		else
			release_region (ioaddr, VORTEX_TOTAL_SIZE);
	}

	/* Special code to work-around the Compaq PCI BIOS32 problem. */
	if (compaq_ioaddr) {
		vortex_probe1(NULL, compaq_ioaddr, compaq_irq,
					  compaq_device_id, vortex_cards_found++);
	}

	return vortex_cards_found - orig_cards_found;
}

/* returns count (>= 0), or negative on error */
static int __devinit vortex_init_one (struct pci_dev *pdev,
				      const struct pci_device_id *ent)
{
	int rc;

	/* wake up and enable device */		
	if (pci_enable_device (pdev)) {
		rc = -EIO;
	} else {
		rc = vortex_probe1 (pdev, pci_resource_start (pdev, 0), pdev->irq,
				    ent->driver_data, vortex_cards_found);
		if (rc == 0)
			vortex_cards_found++;
	}
	return rc;
}

/*
 * Start up the PCI device which is described by *pdev.
 * Return 0 on success.
 *
 * NOTE: pdev can be NULL, for the case of an EISA driver
 */
static int __devinit vortex_probe1(struct pci_dev *pdev,
				   long ioaddr, int irq,
				   int chip_idx, int card_idx)
{
	struct vortex_private *vp;
	int option;
	unsigned int eeprom[0x40], checksum = 0;		/* EEPROM contents */
	int i, step;
	struct net_device *dev;
	static int printed_version;
	int retval, print_info;
	struct vortex_chip_info * const vci = &vortex_info_tbl[chip_idx];
	char *print_name;

	if (!printed_version) {
		printk (version);
		printed_version = 1;
	}

	print_name = pdev ? pdev->slot_name : "3c59x";

	dev = alloc_etherdev(sizeof(*vp));
	retval = -ENOMEM;
	if (!dev) {
		printk (KERN_ERR PFX "unable to allocate etherdev, aborting\n");
		goto out;
	}
	SET_MODULE_OWNER(dev);
	vp = dev->priv;

	/* The lower four bits are the media type. */
	if (dev->mem_start) {
		/*
		 * The 'options' param is passed in as the third arg to the
		 * LILO 'ether=' argument for non-modular use
		 */
		option = dev->mem_start;
	}
	else if (card_idx < MAX_UNITS)
		option = options[card_idx];
	else
		option = -1;

	if (option > 0) {
		if (option & 0x8000)
			vortex_debug = 7;
		if (option & 0x4000)
			vortex_debug = 2;
		if (option & 0x0400)
			vp->enable_wol = 1;
	}

	print_info = (vortex_debug > 1);
	if (print_info)
		printk (KERN_INFO "See Documentation/networking/vortex.txt\n");

	printk(KERN_INFO "%s: 3Com %s %s at 0x%lx. Vers " DRV_VERSION "\n",
	       print_name,
	       pdev ? "PCI" : "EISA",
	       vci->name,
	       ioaddr);

	dev->base_addr = ioaddr;
	dev->irq = irq;
	dev->mtu = mtu;
	vp->drv_flags = vci->drv_flags;
	vp->has_nway = (vci->drv_flags & HAS_NWAY) ? 1 : 0;
	vp->io_size = vci->io_size;
	vp->card_idx = card_idx;

	/* module list only for EISA devices */
	if (pdev == NULL) {
		vp->next_module = root_vortex_eisa_dev;
		root_vortex_eisa_dev = dev;
	}

	/* PCI-only startup logic */
	if (pdev) {
		/* EISA resources already marked, so only PCI needs to do this here */
		/* Ignore return value, because Cardbus drivers already allocate for us */
		if (request_region(ioaddr, vci->io_size, print_name) != NULL)
			vp->must_free_region = 1;

		/* enable bus-mastering if necessary */		
		if (vci->flags & PCI_USES_MASTER)
			pci_set_master (pdev);

		if (vci->drv_flags & IS_VORTEX) {
			u8 pci_latency;
			u8 new_latency = 248;

			/* Check the PCI latency value.  On the 3c590 series the latency timer
			   must be set to the maximum value to avoid data corruption that occurs
			   when the timer expires during a transfer.  This bug exists the Vortex
			   chip only. */
			pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
			if (pci_latency < new_latency) {
				printk(KERN_INFO "%s: Overriding PCI latency"
					" timer (CFLT) setting of %d, new value is %d.\n",
					print_name, pci_latency, new_latency);
					pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency);
			}
		}
	}

	spin_lock_init(&vp->lock);
	spin_lock_init(&vp->mdio_lock);
	vp->pdev = pdev;

	/* Makes sure rings are at least 16 byte aligned. */
	vp->rx_ring = pci_alloc_consistent(pdev, sizeof(struct boom_rx_desc) * RX_RING_SIZE
					   + sizeof(struct boom_tx_desc) * TX_RING_SIZE,
					   &vp->rx_ring_dma);
	retval = -ENOMEM;
	if (vp->rx_ring == 0)
		goto free_region;

	vp->tx_ring = (struct boom_tx_desc *)(vp->rx_ring + RX_RING_SIZE);
	vp->tx_ring_dma = vp->rx_ring_dma + sizeof(struct boom_rx_desc) * RX_RING_SIZE;

	/* if we are a PCI driver, we store info in pdev->driver_data
	 * instead of a module list */	
	if (pdev)
		pci_set_drvdata(pdev, dev);

	vp->media_override = 7;
	if (option >= 0) {
		vp->media_override = ((option & 7) == 2)  ?  0  :  option & 15;
		if (vp->media_override != 7)
			vp->medialock = 1;
		vp->full_duplex = (option & 0x200) ? 1 : 0;
		vp->bus_master = (option & 16) ? 1 : 0;
	}

	if (card_idx < MAX_UNITS) {
		if (full_duplex[card_idx] > 0)
			vp->full_duplex = 1;
		if (flow_ctrl[card_idx] > 0)
			vp->flow_ctrl = 1;
		if (enable_wol[card_idx] > 0)
			vp->enable_wol = 1;
	}

	vp->force_fd = vp->full_duplex;
	vp->options = option;
	/* Read the station address from the EEPROM. */
	EL3WINDOW(0);
	{
		int base;

		if (vci->drv_flags & EEPROM_8BIT)
			base = 0x230;