3c59x.c

	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 = "3c59x";
	struct pci_dev *pdev = NULL;
	struct eisa_device *edev = NULL;

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

	if (gendev) {
		if ((pdev = DEVICE_PCI(gendev))) {
			print_name = pci_name(pdev);
		}

		if ((edev = DEVICE_EISA(gendev))) {
			print_name = edev->dev.bus_id;
		}
	}

	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);
	SET_NETDEV_DEV(dev, gendev);
	vp = netdev_priv(dev);

	option = global_options;

	/* 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) {
		if (options[card_idx] >= 0)
			option = options[card_idx];
	}

	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 %p.\n",
	       print_name,
	       pdev ? "PCI" : "EISA",
	       vci->name,
	       ioaddr);

	dev->base_addr = (unsigned long)ioaddr;
	dev->irq = irq;
	dev->mtu = mtu;
	vp->ioaddr = ioaddr;
	vp->large_frames = mtu > 1500;
	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 Compaq device */
	if (gendev == NULL) {
		compaq_net_device = 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(dev->base_addr, 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);
	vp->gendev = gendev;
	vp->mii.dev = dev;
	vp->mii.mdio_read = mdio_read;
	vp->mii.mdio_write = mdio_write;
	vp->mii.phy_id_mask = 0x1f;
	vp->mii.reg_num_mask = 0x1f;

	/* 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);
	if (edev)
		eisa_set_drvdata(edev, 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 (global_full_duplex > 0)
		vp->full_duplex = 1;
	if (global_enable_wol > 0)
		vp->enable_wol = 1;

	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->mii.force_media = 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;
		else if (vci->drv_flags & EEPROM_OFFSET)
			base = EEPROM_Read + 0x30;
		else
			base = EEPROM_Read;

		for (i = 0; i < 0x40; i++) {
			int timer;
			iowrite16(base + i, ioaddr + Wn0EepromCmd);
			/* Pause for at least 162 us. for the read to take place. */
			for (timer = 10; timer >= 0; timer--) {
				udelay(162);
				if ((ioread16(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
					break;
			}
			eeprom[i] = ioread16(ioaddr + Wn0EepromData);
		}
	}
	for (i = 0; i < 0x18; i++)
		checksum ^= eeprom[i];
	checksum = (checksum ^ (checksum >> 8)) & 0xff;
	if (checksum != 0x00) {		/* Grrr, needless incompatible change 3Com. */
		while (i < 0x21)
			checksum ^= eeprom[i++];
		checksum = (checksum ^ (checksum >> 8)) & 0xff;
	}
	if ((checksum != 0x00) && !(vci->drv_flags & IS_TORNADO))
		printk(" ***INVALID CHECKSUM %4.4x*** ", checksum);
	for (i = 0; i < 3; i++)
		((u16 *)dev->dev_addr)[i] = htons(eeprom[i + 10]);
	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
	if (print_info) {
		for (i = 0; i < 6; i++)
			printk("%c%2.2x", i ? ':' : ' ', dev->dev_addr[i]);
	}
	/* Unfortunately an all zero eeprom passes the checksum and this
	   gets found in the wild in failure cases. Crypto is hard 8) */
	if (!is_valid_ether_addr(dev->dev_addr)) {
		retval = -EINVAL;
		printk(KERN_ERR "*** EEPROM MAC address is invalid.\n");
		goto free_ring;	/* With every pack */
	}
	EL3WINDOW(2);
	for (i = 0; i < 6; i++)
		iowrite8(dev->dev_addr[i], ioaddr + i);

	if (print_info)
		printk(", IRQ %d\n", dev->irq);
	/* Tell them about an invalid IRQ. */
	if (dev->irq <= 0 || dev->irq >= NR_IRQS)
		printk(KERN_WARNING " *** Warning: IRQ %d is unlikely to work! ***\n",
			   dev->irq);

	EL3WINDOW(4);
	step = (ioread8(ioaddr + Wn4_NetDiag) & 0x1e) >> 1;
	if (print_info) {
		printk(KERN_INFO "  product code %02x%02x rev %02x.%d date %02d-"
			"%02d-%02d\n", eeprom[6]&0xff, eeprom[6]>>8, eeprom[0x14],
			step, (eeprom[4]>>5) & 15, eeprom[4] & 31, eeprom[4]>>9);
	}


	if (pdev && vci->drv_flags & HAS_CB_FNS) {
		unsigned short n;

		vp->cb_fn_base = pci_iomap(pdev, 2, 0);
		if (!vp->cb_fn_base) {
			retval = -ENOMEM;
			goto free_ring;
		}

		if (print_info) {
			printk(KERN_INFO "%s: CardBus functions mapped "
				"%16.16llx->%p\n",
				print_name,
				(unsigned long long)pci_resource_start(pdev, 2),
				vp->cb_fn_base);
		}
		EL3WINDOW(2);

		n = ioread16(ioaddr + Wn2_ResetOptions) & ~0x4010;
		if (vp->drv_flags & INVERT_LED_PWR)
			n |= 0x10;
		if (vp->drv_flags & INVERT_MII_PWR)
			n |= 0x4000;
		iowrite16(n, ioaddr + Wn2_ResetOptions);
		if (vp->drv_flags & WNO_XCVR_PWR) {
			EL3WINDOW(0);
			iowrite16(0x0800, ioaddr);
		}
	}

	/* Extract our information from the EEPROM data. */
	vp->info1 = eeprom[13];
	vp->info2 = eeprom[15];
	vp->capabilities = eeprom[16];

	if (vp->info1 & 0x8000) {
		vp->full_duplex = 1;
		if (print_info)
			printk(KERN_INFO "Full duplex capable\n");
	}

	{
		static const char * const ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
		unsigned int config;
		EL3WINDOW(3);
		vp->available_media = ioread16(ioaddr + Wn3_Options);
		if ((vp->available_media & 0xff) == 0)		/* Broken 3c916 */
			vp->available_media = 0x40;
		config = ioread32(ioaddr + Wn3_Config);
		if (print_info) {
			printk(KERN_DEBUG "  Internal config register is %4.4x, "
				   "transceivers %#x.\n", config, ioread16(ioaddr + Wn3_Options));
			printk(KERN_INFO "  %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
				   8 << RAM_SIZE(config),
				   RAM_WIDTH(config) ? "word" : "byte",
				   ram_split[RAM_SPLIT(config)],
				   AUTOSELECT(config) ? "autoselect/" : "",
				   XCVR(config) > XCVR_ExtMII ? "<invalid transceiver>" :
				   media_tbl[XCVR(config)].name);
		}
		vp->default_media = XCVR(config);
		if (vp->default_media == XCVR_NWAY)
			vp->has_nway = 1;
		vp->autoselect = AUTOSELECT(config);
	}

	if (vp->media_override != 7) {
		printk(KERN_INFO "%s:  Media override to transceiver type %d (%s).\n",
				print_name, vp->media_override,
				media_tbl[vp->media_override].name);
		dev->if_port = vp->media_override;
	} else
		dev->if_port = vp->default_media;

	if ((vp->available_media & 0x40) || (vci->drv_flags & HAS_NWAY) ||
		dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) {
		int phy, phy_idx = 0;
		EL3WINDOW(4);
		mii_preamble_required++;
		if (vp->drv_flags & EXTRA_PREAMBLE)
			mii_preamble_required++;
		mdio_sync(ioaddr, 32);
		mdio_read(dev, 24, MII_BMSR);
		for (phy = 0; phy < 32 && phy_idx < 1; phy++) {
			int mii_status, phyx;

			/*
			 * For the 3c905CX we look at index 24 first, because it bogusly
			 * reports an external PHY at all indices
			 */
			if (phy == 0)
				phyx = 24;
			else if (phy <= 24)
				phyx = phy - 1;
			else
				phyx = phy;
			mii_status = mdio_read(dev, phyx, MII_BMSR);
			if (mii_status  &&  mii_status != 0xffff) {
				vp->phys[phy_idx++] = phyx;
				if (print_info) {
					printk(KERN_INFO "  MII transceiver found at address %d,"
						" status %4x.\n", phyx, mii_status);
				}
				if ((mii_status & 0x0040) == 0)
					mii_preamble_required++;
			}
		}
		mii_preamble_required--;
		if (phy_idx == 0) {
			printk(KERN_WARNING"  ***WARNING*** No MII transceivers found!\n");
			vp->phys[0] = 24;
		} else {
			vp->advertising = mdio_read(dev, vp->phys[0], MII_ADVERTISE);
			if (vp->full_duplex) {
				/* Only advertise the FD media types. */
				vp->advertising &= ~0x02A0;
				mdio_write(dev, vp->phys[0], 4, vp->advertising);
			}
		}
		vp->mii.phy_id = vp->phys[0];
	}

	if (vp->capabilities & CapBusMaster) {
		vp->full_bus_master_tx = 1;
		if (print_info) {
			printk(KERN_INFO "  Enabling bus-master transmits and %s receives.\n",
			(vp->info2 & 1) ? "early" : "whole-frame" );
		}
		vp->full_bus_master_rx = (vp->info2 & 1) ? 1 : 2;
		vp->bus_master = 0;		/* AKPM: vortex only */
	}

	/* The 3c59x-specific entries in the device structure. */
	dev->open = vortex_open;
	if (vp->full_bus_master_tx) {
		dev->hard_start_xmit = boomerang_start_xmit;
		/* Actually, it still should work with iommu. */
		if (card_idx < MAX_UNITS &&
		    ((hw_checksums[card_idx] == -1 && (vp->drv_flags & HAS_HWCKSM)) ||
				hw_checksums[card_idx] == 1)) {
			dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
		}
	} else {
		dev->hard_start_xmit = vortex_start_xmit;
	}

	if (print_info) {
		printk(KERN_INFO "%s: scatter/gather %sabled. h/w checksums %sabled\n",
				print_name,
				(dev->features & NETIF_F_SG) ? "en":"dis",
				(dev->features & NETIF_F_IP_CSUM) ? "en":"dis");
	}

	dev->stop = vortex_close;
	dev->get_stats = vortex_get_stats;
#ifdef CONFIG_PCI
	dev->do_ioctl = vortex_ioctl;
#endif
	dev->ethtool_ops = &vortex_ethtool_ops;
	dev->set_multicast_list = set_rx_mode;
	dev->tx_timeout = vortex_tx_timeout;
	dev->watchdog_timeo = (watchdog * HZ) / 1000;
#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = poll_vortex;
#endif
	if (pdev) {
		vp->pm_state_valid = 1;
 		pci_save_state(VORTEX_PCI(vp));
 		acpi_set_WOL(dev);
	}
	retval = register_netdev(dev);
	if (retval == 0)
		return 0;

free_ring:
	pci_free_consistent(pdev,
						sizeof(struct boom_rx_desc) * RX_RING_SIZE
							+ sizeof(struct boom_tx_desc) * TX_RING_SIZE,
						vp->rx_ring,
						vp->rx_ring_dma);
free_region:
	if (vp->must_free_region)
		release_region(dev->base_addr, vci->io_size);
	free_netdev(dev);
	printk(KERN_ERR PFX "vortex_probe1 fails.  Returns %d\n", retval);
out:
	return retval;
}

static void
issue_and_wait(struct net_device *dev, int cmd)
{
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;
	int i;

	iowrite16(cmd, ioaddr + EL3_CMD);
	for (i = 0; i < 2000; i++) {
		if (!(ioread16(ioaddr + EL3_STATUS) & CmdInProgress))
			return;
	}

	/* OK, that didn't work.  Do it the slow way.  One second */
	for (i = 0; i < 100000; i++) {
		if (!(ioread16(ioaddr + EL3_STATUS) & CmdInProgress)) {
			if (vortex_debug > 1)
				printk(KERN_INFO "%s: command 0x%04x took %d usecs\n",
					   dev->name, cmd, i * 10);
			return;
		}
		udelay(10);
	}
	printk(KERN_ERR "%s: command 0x%04x did not complete! Status=0x%x\n",
			   dev->name, cmd, ioread16(ioaddr + EL3_STATUS));
}

static void
vortex_set_duplex(struct net_device *dev)
{
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;

	printk(KERN_INFO "%s:  setting %s-duplex.\n",
		dev->name, (vp->full_duplex) ? "full" : "half");

	EL3WINDOW(3);
	/* Set the full-duplex bit. */
	iowrite16(((vp->info1 & 0x8000) || vp->full_duplex ? 0x20 : 0) |
		 	(vp->large_frames ? 0x40 : 0) |
			((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ?
					0x100 : 0),
			ioaddr + Wn3_MAC_Ctrl);
}

static void vortex_check_media(struct net_device *dev, unsigned int init)
{
	struct vortex_private *vp = netdev_priv(dev);
	unsigned int ok_to_print = 0;

	if (vortex_debug > 3)
		ok_to_print = 1;

	if (mii_check_media(&vp->mii, ok_to_print, init)) {
		vp->full_duplex = vp->mii.full_duplex;
		vortex_set_duplex(dev);
	} else if (init) {
		vortex_set_duplex(dev);
	}
}

static void
vortex_up(struct net_device *dev)
{
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;
	unsigned int config;
	int i, mii_reg1, mii_reg5;

	if (VORTEX_PCI(vp)) {
		pci_set_power_state(VORTEX_PCI(vp), PCI_D0);	/* Go active */
		if (vp->pm_state_valid)
			pci_restore_state(VORTEX_PCI(vp));
		pci_enable_device(VORTEX_PCI(vp));
	}

	/* Before initializing select the active media port. */
	EL3WINDOW(3);
	config = ioread32(ioaddr + Wn3_Config);

	if (vp->media_override != 7) {
		printk(KERN_INFO "%s: Media override to transceiver %d (%s).\n",
			   dev->name, vp->media_override,
			   media_tbl[vp->media_override].name);
		dev->if_port = vp->media_override;
	} else if (vp->autoselect) {
		if (vp->has_nway) {
			if (vortex_debug > 1)
				printk(KERN_INFO "%s: using NWAY device table, not %d\n",
								dev->name, dev->if_port);
			dev->if_port = XCVR_NWAY;
		} else {
			/* Find first available media type, starting with 100baseTx. */
			dev->if_port = XCVR_100baseTx;
			while (! (vp->available_media & media_tbl[dev->if_port].mask))
				dev->if_port = media_tbl[dev->if_port].next;
			if (vortex_debug > 1)
				printk(KERN_INFO "%s: first available media type: %s\n",
					dev->name, media_tbl[dev->if_port].name);
		}
	} else {
		dev->if_port = vp->default_media;
		if (vortex_debug > 1)
			printk(KERN_INFO "%s: using default media %s\n",
				dev->name, media_tbl[dev->if_port].name);
	}

	init_timer(&vp->timer);
	vp->timer.expires = RUN_AT(media_tbl[dev->if_port].wait);
	vp->timer.data = (unsigned long)dev;
	vp->timer.function = vortex_timer;		/* timer handler */
	add_timer(&vp->timer);

	init_timer(&vp->rx_oom_timer);
	vp->rx_oom_timer.data = (unsigned long)dev;
	vp->rx_oom_timer.function = rx_oom_timer;

	if (vortex_debug > 1)
		printk(KERN_DEBUG "%s: Initial media type %s.\n",
			   dev->name, media_tbl[dev->if_port].name);

	vp->full_duplex = vp->mii.force_media;
	config = BFINS(config, dev->if_port, 20, 4);
	if (vortex_debug > 6)
		printk(KERN_DEBUG "vortex_up(): writing 0x%x to InternalConfig\n", config);
	iowrite32(config, ioaddr + Wn3_Config);

	if (dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) {
		EL3WINDOW(4);
		mii_reg1 = mdio_read(dev, vp->phys[0], MII_BMSR);
		mii_reg5 = mdio_read(dev, vp->phys[0], MII_LPA);
		vp->partner_flow_ctrl = ((mii_reg5 & 0x0400) != 0);

		vortex_check_media(dev, 1);
	}
	else
		vortex_set_duplex(dev);

	issue_and_wait(dev, TxReset);
	/*
	 * Don't reset the PHY - that upsets autonegotiation during DHCP operations.
	 */
	issue_and_wait(dev, RxReset|0x04);


	iowrite16(SetStatusEnb | 0x00, ioaddr + EL3_CMD);

	if (vortex_debug > 1) {
		EL3WINDOW(4);
		printk(KERN_DEBUG "%s: vortex_up() irq %d media status %4.4x.\n",
			   dev->name, dev->irq, ioread16(ioaddr + Wn4_Media));
	}

	/* Set the station address and mask in window 2 each time opened. */
	EL3WINDOW(2);
	for (i = 0; i < 6; i++)
		iowrite8(dev->dev_addr[i], ioaddr + i);
	for (; i < 12; i+=2)
		iowrite16(0, ioaddr + i);

	if (vp->cb_fn_base) {
		unsigned short n = ioread16(ioaddr + Wn2_ResetOptions) & ~0x4010;
		if (vp->drv_flags & INVERT_LED_PWR)
			n |= 0x10;
		if (vp->drv_flags & INVERT_MII_PWR)
			n |= 0x4000;
		iowrite16(n, ioaddr + Wn2_ResetOptions);
	}

	if (dev->if_port == XCVR_10base2)
		/* Start the thinnet transceiver. We should really wait 50ms...*/
		iowrite16(StartCoax, ioaddr + EL3_CMD);
	if (dev->if_port != XCVR_NWAY) {
		EL3WINDOW(4);
		iowrite16((ioread16(ioaddr + Wn4_Media) & ~(Media_10TP|Media_SQE)) |
			 media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);
	}

	/* Switch to the stats window, and clear all stats by reading. */
	iowrite16(StatsDisable, ioaddr + EL3_CMD);
	EL3WINDOW(6);
	for (i = 0; i < 10; i++)
		ioread8(ioaddr + i);
	ioread16(ioaddr + 10);
	ioread16(ioaddr + 12);
	/* New: On the Vortex we must also clear the BadSSD counter. */
	EL3WINDOW(4);
	ioread8(ioaddr + 12);
	/* ..and on the Boomerang we enable the extra statistics bits. */
	iowrite16(0x0040, ioaddr + Wn4_NetDiag);

	/* Switch to register set 7 for normal use. */
	EL3WINDOW(7);

	if (vp->full_bus_master_rx) { /* Boomerang bus master. */
		vp->cur_rx = vp->dirty_rx = 0;
		/* Initialize the RxEarly register as recommended. */
		iowrite16(SetRxThreshold + (1536>>2), ioaddr + EL3_CMD);
		iowrite32(0x0020, ioaddr + PktStatus);
		iowrite32(vp->rx_ring_dma, ioaddr + UpListPtr);
	}
	if (vp->full_bus_master_tx) { 		/* Boomerang bus master Tx. */
		vp->cur_tx = vp->dirty_tx = 0;
		if (vp->drv_flags & IS_BOOMERANG)
			iowrite8(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); /* Room for a packet. */
		/* Clear the Rx, Tx rings. */
		for (i = 0; i < RX_RING_SIZE; i++)	/* AKPM: this is done in vortex_open, too */
			vp->rx_ring[i].status = 0;
		for (i = 0; i < TX_RING_SIZE; i++)
			vp->tx_skbuff[i] = NULL;
		iowrite32(0, ioaddr + DownListPtr);
	}
	/* Set receiver mode: presumably accept b-case and phys addr only. */
	set_rx_mode(dev);
	/* enable 802.1q tagged frames */
	set_8021q_mode(dev, 1);
	iowrite16(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */

	iowrite16(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
	iowrite16(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
	/* Allow status bits to be seen. */
	vp->status_enable = SetStatusEnb | HostError|IntReq|StatsFull|TxComplete|
		(vp->full_bus_master_tx ? DownComplete : TxAvailable) |
		(vp->full_bus_master_rx ? UpComplete : RxComplete) |
		(vp->bus_master ? DMADone : 0);
	vp->intr_enable = SetIntrEnb | IntLatch | TxAvailable |
		(vp->full_bus_master_rx ? 0 : RxComplete) |
		StatsFull | HostError | TxComplete | IntReq
		| (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete;
	iowrite16(vp->status_enable, ioaddr + EL3_CMD);
	/* Ack all pending events, and set active indicator mask. */
	iowrite16(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
		 ioaddr + EL3_CMD);
	iowrite16(vp->intr_enable, ioaddr + EL3_CMD);
	if (vp->cb_fn_base)			/* The PCMCIA people are idiots.  */
		iowrite32(0x8000, vp->cb_fn_base + 4);
	netif_start_queue (dev);
}

static int
vortex_open(struct net_device *dev)
{
	struct vortex_private *vp = netdev_priv(dev);
	int i;
	int retval;

	/* Use the now-standard shared IRQ implementation. */
	if ((retval = request_irq(dev->irq, vp->full_bus_master_rx ?
				&boomerang_interrupt : &vortex_interrupt, IRQF_SHARED, dev->name, dev))) {
		printk(KERN_ERR "%s: Could not reserve IRQ %d\n", dev->name, dev->irq);
		goto out;
	}

	if (vp->full_bus_master_rx) { /* Boomerang bus master. */
		if (vortex_debug > 2)
			printk(KERN_DEBUG "%s:  Filling in the Rx ring.\n", dev->name);
		for (i = 0; i < RX_RING_SIZE; i++) {
			struct sk_buff *skb;
			vp->rx_ring[i].next = cpu_to_le32(vp->rx_ring_dma + sizeof(struct boom_rx_desc) * (i+1));
			vp->rx_ring[i].status = 0;	/* Clear complete bit. */
			vp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ | LAST_FRAG);
			skb = dev_alloc_skb(PKT_BUF_SZ);
			vp->rx_skbuff[i] = skb;
			if (skb == NULL)
				break;			/* Bad news!  */
			skb->dev = dev;			/* Mark as being used by this device. */
			skb_reserve(skb, 2);	/* Align IP on 16 byte boundaries */
			vp->rx_ring[i].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, PKT_BUF_SZ, PCI_DMA_FROMDEVICE));
		}
		if (i != RX_RING_SIZE) {
			int j;
			printk(KERN_EMERG "%s: no memory for rx ring\n", dev->name);
			for (j = 0; j < i; j++) {
				if (vp->rx_skbuff[j]) {
					dev_kfree_skb(vp->rx_skbuff[j]);
					vp->rx_skbuff[j] = NULL;
				}
			}
			retval = -ENOMEM;
			goto out_free_irq;
		}
		/* Wrap the ring. */
		vp->rx_ring[i-1].next = cpu_to_le32(vp->rx_ring_dma);
	}

	vortex_up(dev);
	return 0;

out_free_irq:
	free_irq(dev->irq, dev);
out:
	if (vortex_debug > 1)
		printk(KERN_ERR "%s: vortex_open() fails: returning %d\n", dev->name, retval);
	return retval;
}

static void
vortex_timer(unsigned long data)
{
	struct net_device *dev = (struct net_device *)data;
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;
	int next_tick = 60*HZ;
	int ok = 0;
	int media_status, old_window;

	if (vortex_debug > 2) {
		printk(KERN_DEBUG "%s: Media selection timer tick happened, %s.\n",
			   dev->name, media_tbl[dev->if_port].name);
		printk(KERN_DEBUG "dev->watchdog_timeo=%d\n", dev->watchdog_timeo);
	}

	disable_irq_lockdep(dev->irq);
	old_window = ioread16(ioaddr + EL3_CMD) >> 13;
	EL3WINDOW(4);
	media_status = ioread16(ioaddr + Wn4_Media);
	switch (dev->if_port) {
	case XCVR_10baseT:  case XCVR_100baseTx:  case XCVR_100baseFx:
		if (media_status & Media_LnkBeat) {
			netif_carrier_on(dev);
			ok = 1;
			if (vortex_debug > 1)
				printk(KERN_DEBUG "%s: Media %s has link beat, %x.\n",
					   dev->name, media_tbl[dev->if_port].name, media_status);
		} else {
			netif_carrier_off(dev);
			if (vortex_debug > 1) {
				printk(KERN_DEBUG "%s: Media %s has no link beat, %x.\n",
					   dev->name, media_tbl[dev->if_port].name, media_status);
			}
		}
		break;
	case XCVR_MII: case XCVR_NWAY:
		{
			ok = 1;
			spin_lock_bh(&vp->lock);
			vortex_check_media(dev, 0);
			spin_unlock_bh(&vp->lock);
		}
		break;
	  default:					/* Other media types handled by Tx timeouts. */
		if (vortex_debug > 1)
		  printk(KERN_DEBUG "%s: Media %s has no indication, %x.\n",
				 dev->name, media_tbl[dev->if_port].name, media_status);
		ok = 1;
	}

	if (!netif_carrier_ok(dev))
		next_tick = 5*HZ;

	if (vp->medialock)
		goto leave_media_alone;

	if (!ok) {
		unsigned int config;

		do {
			dev->if_port = media_tbl[dev->if_port].next;
		} while ( ! (vp->available_media & media_tbl[dev->if_port].mask));
		if (dev->if_port == XCVR_Default) { /* Go back to default. */
		  dev->if_port = vp->default_media;
		  if (vortex_debug > 1)
			printk(KERN_DEBUG "%s: Media selection failing, using default "
				   "%s port.\n",
				   dev->name, media_tbl[dev->if_port].name);
		} else {
			if (vortex_debug > 1)
				printk(KERN_DEBUG "%s: Media selection failed, now trying "
					   "%s port.\n",
					   dev->name, media_tbl[dev->if_port].name);
			next_tick = media_tbl[dev->if_port].wait;
		}
		iowrite16((media_status & ~(Media_10TP|Media_SQE)) |
			 media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);

		EL3WINDOW(3);
		config = ioread32(ioaddr + Wn3_Config);
		config = BFINS(config, dev->if_port, 20, 4);
		iowrite32(config, ioaddr + Wn3_Config);

		iowrite16(dev->if_port == XCVR_10base2 ? StartCoax : StopCoax,
			 ioaddr + EL3_CMD);
		if (vortex_debug > 1)
			printk(KERN_DEBUG "wrote 0x%08x to Wn3_Config\n", config);
		/* AKPM: FIXME: Should reset Rx & Tx here.  P60 of 3c90xc.pdf */
	}

leave_media_alone:
	if (vortex_debug > 2)
	  printk(KERN_DEBUG "%s: Media selection timer finished, %s.\n",
			 dev->name, media_tbl[dev->if_port].name);

	EL3WINDOW(old_window);
	enable_irq_lockdep(dev->irq);
	mod_timer(&vp->timer, RUN_AT(next_tick));
	if (vp->deferred)
		iowrite16(FakeIntr, ioaddr + EL3_CMD);
	return;
}

static void vortex_tx_timeout(struct net_device *dev)
{
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;

	printk(KERN_ERR "%s: transmit timed out, tx_status %2.2x status %4.4x.\n",
		   dev->name, ioread8(ioaddr + TxStatus),
		   ioread16(ioaddr + EL3_STATUS));
	EL3WINDOW(4);
	printk(KERN_ERR "  diagnostics: net %04x media %04x dma %08x fifo %04x\n",
			ioread16(ioaddr + Wn4_NetDiag),
			ioread16(ioaddr + Wn4_Media),
			ioread32(ioaddr + PktStatus),
			ioread16(ioaddr + Wn4_FIFODiag));
	/* Slight code bloat to be user friendly. */
	if ((ioread8(ioaddr + TxStatus) & 0x88) == 0x88)
		printk(KERN_ERR "%s: Transmitter encountered 16 collisions --"
			   " network cable problem?\n", dev->name);
	if (ioread16(ioaddr + EL3_STATUS) & IntLatch) {
		printk(KERN_ERR "%s: Interrupt posted but not delivered --"
			   " IRQ blocked by another device?\n", dev->name);
		/* Bad idea here.. but we might as well handle a few events. */
		{
			/*
			 * Block interrupts because vortex_interrupt does a bare spin_lock()
			 */
			unsigned long flags;
			local_irq_save(flags);
			if (vp->full_bus_master_tx)
				boomerang_interrupt(dev->irq, dev);
			else
				vortex_interrupt(dev->irq, dev);
			local_irq_restore(flags);
		}
	}

	if (vortex_debug > 0)
		dump_tx_ring(dev);

	issue_and_wait(dev, TxReset);

	vp->stats.tx_errors++;
	if (vp->full_bus_master_tx) {
		printk(KERN_DEBUG "%s: Resetting the Tx ring pointer.\n", dev->name);
		if (vp->cur_tx - vp->dirty_tx > 0  &&  ioread32(ioaddr + DownListPtr) == 0)
			iowrite32(vp->tx_ring_dma + (vp->dirty_tx % TX_RING_SIZE) * sizeof(struct boom_tx_desc),
				 ioaddr + DownListPtr);
		if (vp->cur_tx - vp->dirty_tx < TX_RING_SIZE)
			netif_wake_queue (dev);
		if (vp->drv_flags & IS_BOOMERANG)
			iowrite8(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold);
		iowrite16(DownUnstall, ioaddr + EL3_CMD);
	} else {
		vp->stats.tx_dropped++;
		netif_wake_queue(dev);
	}

	/* Issue Tx Enable */
	iowrite16(TxEnable, ioaddr + EL3_CMD);
	dev->trans_start = jiffies;

	/* Switch to register set 7 for normal use. */
	EL3WINDOW(7);
}

/*
 * Handle uncommon interrupt sources.  This is a separate routine to minimize
 * the cache impact.
 */
static void
vortex_error(struct net_device *dev, int status)
{
	struct vortex_private *vp = netdev_priv(dev);
	void __iomem *ioaddr = vp->ioaddr;
	int do_tx_reset = 0, reset_mask = 0;
	unsigned char tx_status = 0;

	if (vortex_debug > 2) {
		printk(KERN_ERR "%s: vortex_error(), status=0x%x\n", dev->name, status);
	}

	if (status & TxComplete) {			/* Really "TxError" for us. */
		tx_status = ioread8(ioaddr + TxStatus);
		/* Presumably a tx-timeout. We must merely re-enable. */
		if (vortex_debug > 2
			|| (tx_status != 0x88 && vortex_debug > 0)) {
			printk(KERN_ERR "%s: Transmit error, Tx status register %2.2x.\n",
				   dev->name, tx_status);
			if (tx_status == 0x82) {
				printk(KERN_ERR "Probably a duplex mismatch.  See "
						"Documentation/networking/vortex.txt\n");
			}
			dump_tx_ring(dev);
		}
		if (tx_status & 0x14)  vp->stats.tx_fifo_errors++;
		if (tx_status & 0x38)  vp->stats.tx_aborted_errors++;
		if (tx_status & 0x08)  vp->xstats.tx_max_collisions++;
		iowrite8(0, ioaddr + TxStatus);
		if (tx_status & 0x30) {			/* txJabber or txUnderrun */
			do_tx_reset = 1;
		} else if ((tx_status & 0x08) && (vp->drv_flags & MAX_COLLISION_RESET))  {	/* maxCollisions */
			do_tx_reset = 1;
			reset_mask = 0x0108;		/* Reset interface logic, but not download logic */
		} else {				/* Merely re-enable the transmitter. */
			iowrite16(TxEnable, ioaddr + EL3_CMD);
		}
	}

	if (status & RxEarly) {				/* Rx early is unused. */
		vortex_rx(dev);
		iowrite16(AckIntr | RxEarly, ioaddr + EL3_CMD);
	}
	if (status & StatsFull) {			/* Empty statistics. */
		static int DoneDidThat;
		if (vortex_debug > 4)
			printk(KERN_DEBUG "%s: Updating stats.\n", dev->name);
		update_stats(ioaddr, dev);
		/* HACK: Disable statistics as an interrupt source. */
		/* This occurs when we have the wrong media type! */
		if (DoneDidThat == 0  &&
			ioread16(ioaddr + EL3_STATUS) & StatsFull) {
			printk(KERN_WARNING "%s: Updating statistics failed, disabling "
				   "stats as an interrupt source.\n", dev->name);
			EL3WINDOW(5);
			iowrite16(SetIntrEnb | (ioread16(ioaddr + 10) & ~StatsFull), ioaddr + EL3_CMD);
			vp->intr_enable &= ~StatsFull;
			EL3WINDOW(7);
			DoneDidThat++;
		}
	}
	if (status & IntReq) {		/* Restore all interrupt sources.  */
		iowrite16(vp->status_enable, ioaddr + EL3_CMD);
		iowrite16(vp->intr_enable, ioaddr + EL3_CMD);
	}
	if (status & HostError) {
		u16 fifo_diag;
		EL3WINDOW(4);
		fifo_diag = ioread16(ioaddr + Wn4_FIFODiag);
		printk(KERN_ERR "%s: Host error, FIFO diagnostic register %4.4x.\n",
			   dev->name, fifo_diag);
		/* Adapter failure requires Tx/Rx reset and reinit. */
		if (vp->full_bus_master_tx) {
			int bus_status = ioread32(ioaddr + PktStatus);
			/* 0x80000000 PCI master abort. */
			/* 0x40000000 PCI target abort. */
			if (vortex_debug)
				printk(KERN_ERR "%s: PCI bus error, bus status %8.8x\n", dev->name, bus_status);

			/* In this case, blow the card away */
			/* Must not enter D3 or we can't legally issue the reset! */
			vortex_down(dev, 0);
			issue_and_wait(dev, TotalReset | 0xff);
			vortex_up(dev);		/* AKPM: bug.  vortex_up() assumes that the rx ring is full. It may not be. */
		} else if (fifo_diag & 0x0400)
			do_tx_reset = 1;
		if (fifo_diag & 0x3000) {
			/* Reset Rx fifo and upload logic */
			issue_and_wait(dev, RxReset|0x07);
			/* Set the Rx filter to the current state. */
			set_rx_mode(dev);
			/* enable 802.1q VLAN tagged frames */
			set_8021q_mode(dev, 1);
			iowrite16(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
			iowrite16(AckIntr | HostError, ioaddr + EL3_CMD);
		}
	}

	if (do_tx_reset) {
		issue_and_wait(dev, TxReset|reset_mask);
		iowrite16(TxEnable, ioaddr + EL3_CMD);
		if (!vp->full_bus_master_tx)
			netif_wake_queue(dev);
	}
}

static int
vortex_start_xmit(struct sk_buff *skb, struct net_device *dev)
{