e1000_main.c

linux-2.6.15.6

	if(adapter->hw.mac_type == e1000_82547) {
		adapter->tx_fifo_head = 0;
		adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
		adapter->tx_fifo_size =
			(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
		atomic_set(&adapter->tx_fifo_stall, 0);
	}

	E1000_WRITE_REG(&adapter->hw, PBA, pba);

	/* flow control settings */
	adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -
				    fc_high_water_mark;
	adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -
				   fc_low_water_mark;
	adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
	adapter->hw.fc_send_xon = 1;
	adapter->hw.fc = adapter->hw.original_fc;

	/* Allow time for pending master requests to run */
	e1000_reset_hw(&adapter->hw);
	if(adapter->hw.mac_type >= e1000_82544)
		E1000_WRITE_REG(&adapter->hw, WUC, 0);
	if(e1000_init_hw(&adapter->hw))
		DPRINTK(PROBE, ERR, "Hardware Error\n");
	e1000_update_mng_vlan(adapter);
	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
	E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);

	e1000_reset_adaptive(&adapter->hw);
	e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
	if (adapter->en_mng_pt) {
		manc = E1000_READ_REG(&adapter->hw, MANC);
		manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
		E1000_WRITE_REG(&adapter->hw, MANC, manc);
	}
}

/**
 * e1000_probe - Device Initialization Routine
 * @pdev: PCI device information struct
 * @ent: entry in e1000_pci_tbl
 *
 * Returns 0 on success, negative on failure
 *
 * e1000_probe initializes an adapter identified by a pci_dev structure.
 * The OS initialization, configuring of the adapter private structure,
 * and a hardware reset occur.
 **/

static int __devinit
e1000_probe(struct pci_dev *pdev,
            const struct pci_device_id *ent)
{
	struct net_device *netdev;
	struct e1000_adapter *adapter;
	unsigned long mmio_start, mmio_len;
	uint32_t ctrl_ext;
	uint32_t swsm;

	static int cards_found = 0;
	int i, err, pci_using_dac;
	uint16_t eeprom_data;
	uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
	if((err = pci_enable_device(pdev)))
		return err;

	if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
		pci_using_dac = 1;
	} else {
		if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
			E1000_ERR("No usable DMA configuration, aborting\n");
			return err;
		}
		pci_using_dac = 0;
	}

	if((err = pci_request_regions(pdev, e1000_driver_name)))
		return err;

	pci_set_master(pdev);

	netdev = alloc_etherdev(sizeof(struct e1000_adapter));
	if(!netdev) {
		err = -ENOMEM;
		goto err_alloc_etherdev;
	}

	SET_MODULE_OWNER(netdev);
	SET_NETDEV_DEV(netdev, &pdev->dev);

	pci_set_drvdata(pdev, netdev);
	adapter = netdev_priv(netdev);
	adapter->netdev = netdev;
	adapter->pdev = pdev;
	adapter->hw.back = adapter;
	adapter->msg_enable = (1 << debug) - 1;

	mmio_start = pci_resource_start(pdev, BAR_0);
	mmio_len = pci_resource_len(pdev, BAR_0);

	adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
	if(!adapter->hw.hw_addr) {
		err = -EIO;
		goto err_ioremap;
	}

	for(i = BAR_1; i <= BAR_5; i++) {
		if(pci_resource_len(pdev, i) == 0)
			continue;
		if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
			adapter->hw.io_base = pci_resource_start(pdev, i);
			break;
		}
	}

	netdev->open = &e1000_open;
	netdev->stop = &e1000_close;
	netdev->hard_start_xmit = &e1000_xmit_frame;
	netdev->get_stats = &e1000_get_stats;
	netdev->set_multicast_list = &e1000_set_multi;
	netdev->set_mac_address = &e1000_set_mac;
	netdev->change_mtu = &e1000_change_mtu;
	netdev->do_ioctl = &e1000_ioctl;
	e1000_set_ethtool_ops(netdev);
	netdev->tx_timeout = &e1000_tx_timeout;
	netdev->watchdog_timeo = 5 * HZ;
#ifdef CONFIG_E1000_NAPI
	netdev->poll = &e1000_clean;
	netdev->weight = 64;
#endif
	netdev->vlan_rx_register = e1000_vlan_rx_register;
	netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
	netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
#ifdef CONFIG_NET_POLL_CONTROLLER
	netdev->poll_controller = e1000_netpoll;
#endif
	strcpy(netdev->name, pci_name(pdev));

	netdev->mem_start = mmio_start;
	netdev->mem_end = mmio_start + mmio_len;
	netdev->base_addr = adapter->hw.io_base;

	adapter->bd_number = cards_found;

	/* setup the private structure */

	if((err = e1000_sw_init(adapter)))
		goto err_sw_init;

	if((err = e1000_check_phy_reset_block(&adapter->hw)))
		DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");

	if(adapter->hw.mac_type >= e1000_82543) {
		netdev->features = NETIF_F_SG |
				   NETIF_F_HW_CSUM |
				   NETIF_F_HW_VLAN_TX |
				   NETIF_F_HW_VLAN_RX |
				   NETIF_F_HW_VLAN_FILTER;
	}

#ifdef NETIF_F_TSO
	if((adapter->hw.mac_type >= e1000_82544) &&
	   (adapter->hw.mac_type != e1000_82547))
		netdev->features |= NETIF_F_TSO;

#ifdef NETIF_F_TSO_IPV6
	if(adapter->hw.mac_type > e1000_82547_rev_2)
		netdev->features |= NETIF_F_TSO_IPV6;
#endif
#endif
	if(pci_using_dac)
		netdev->features |= NETIF_F_HIGHDMA;

 	/* hard_start_xmit is safe against parallel locking */
 	netdev->features |= NETIF_F_LLTX; 
 
	adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);

	/* before reading the EEPROM, reset the controller to 
	 * put the device in a known good starting state */
	
	e1000_reset_hw(&adapter->hw);

	/* make sure the EEPROM is good */

	if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
		DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
		err = -EIO;
		goto err_eeprom;
	}

	/* copy the MAC address out of the EEPROM */

	if(e1000_read_mac_addr(&adapter->hw))
		DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
	memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
	memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);

	if(!is_valid_ether_addr(netdev->perm_addr)) {
		DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
		err = -EIO;
		goto err_eeprom;
	}

	e1000_read_part_num(&adapter->hw, &(adapter->part_num));

	e1000_get_bus_info(&adapter->hw);

	init_timer(&adapter->tx_fifo_stall_timer);
	adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
	adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;

	init_timer(&adapter->watchdog_timer);
	adapter->watchdog_timer.function = &e1000_watchdog;
	adapter->watchdog_timer.data = (unsigned long) adapter;

	INIT_WORK(&adapter->watchdog_task,
		(void (*)(void *))e1000_watchdog_task, adapter);

	init_timer(&adapter->phy_info_timer);
	adapter->phy_info_timer.function = &e1000_update_phy_info;
	adapter->phy_info_timer.data = (unsigned long) adapter;

	INIT_WORK(&adapter->tx_timeout_task,
		(void (*)(void *))e1000_tx_timeout_task, netdev);

	/* we're going to reset, so assume we have no link for now */

	netif_carrier_off(netdev);
	netif_stop_queue(netdev);

	e1000_check_options(adapter);

	/* Initial Wake on LAN setting
	 * If APM wake is enabled in the EEPROM,
	 * enable the ACPI Magic Packet filter
	 */

	switch(adapter->hw.mac_type) {
	case e1000_82542_rev2_0:
	case e1000_82542_rev2_1:
	case e1000_82543:
		break;
	case e1000_82544:
		e1000_read_eeprom(&adapter->hw,
			EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
		eeprom_apme_mask = E1000_EEPROM_82544_APM;
		break;
	case e1000_82546:
	case e1000_82546_rev_3:
		if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
		   && (adapter->hw.media_type == e1000_media_type_copper)) {
			e1000_read_eeprom(&adapter->hw,
				EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
			break;
		}
		/* Fall Through */
	default:
		e1000_read_eeprom(&adapter->hw,
			EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
		break;
	}
	if(eeprom_data & eeprom_apme_mask)
		adapter->wol |= E1000_WUFC_MAG;

	/* reset the hardware with the new settings */
	e1000_reset(adapter);

	/* Let firmware know the driver has taken over */
	switch(adapter->hw.mac_type) {
	case e1000_82571:
	case e1000_82572:
		ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
		E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
				ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
		break;
	case e1000_82573:
		swsm = E1000_READ_REG(&adapter->hw, SWSM);
		E1000_WRITE_REG(&adapter->hw, SWSM,
				swsm | E1000_SWSM_DRV_LOAD);
		break;
	default:
		break;
	}

	strcpy(netdev->name, "eth%d");
	if((err = register_netdev(netdev)))
		goto err_register;

	DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");

	cards_found++;
	return 0;

err_register:
err_sw_init:
err_eeprom:
	iounmap(adapter->hw.hw_addr);
err_ioremap:
	free_netdev(netdev);
err_alloc_etherdev:
	pci_release_regions(pdev);
	return err;
}

/**
 * e1000_remove - Device Removal Routine
 * @pdev: PCI device information struct
 *
 * e1000_remove is called by the PCI subsystem to alert the driver
 * that it should release a PCI device.  The could be caused by a
 * Hot-Plug event, or because the driver is going to be removed from
 * memory.
 **/

static void __devexit
e1000_remove(struct pci_dev *pdev)
{
	struct net_device *netdev = pci_get_drvdata(pdev);
	struct e1000_adapter *adapter = netdev_priv(netdev);
	uint32_t ctrl_ext;
	uint32_t manc, swsm;
#ifdef CONFIG_E1000_NAPI
	int i;
#endif

	flush_scheduled_work();

	if(adapter->hw.mac_type >= e1000_82540 &&
	   adapter->hw.media_type == e1000_media_type_copper) {
		manc = E1000_READ_REG(&adapter->hw, MANC);
		if(manc & E1000_MANC_SMBUS_EN) {
			manc |= E1000_MANC_ARP_EN;
			E1000_WRITE_REG(&adapter->hw, MANC, manc);
		}
	}

	switch(adapter->hw.mac_type) {
	case e1000_82571:
	case e1000_82572:
		ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
		E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
				ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
		break;
	case e1000_82573:
		swsm = E1000_READ_REG(&adapter->hw, SWSM);
		E1000_WRITE_REG(&adapter->hw, SWSM,
				swsm & ~E1000_SWSM_DRV_LOAD);
		break;

	default:
		break;
	}

	unregister_netdev(netdev);
#ifdef CONFIG_E1000_NAPI
	for (i = 0; i < adapter->num_queues; i++)
		__dev_put(&adapter->polling_netdev[i]);
#endif

	if(!e1000_check_phy_reset_block(&adapter->hw))
		e1000_phy_hw_reset(&adapter->hw);

	kfree(adapter->tx_ring);
	kfree(adapter->rx_ring);
#ifdef CONFIG_E1000_NAPI
	kfree(adapter->polling_netdev);
#endif

	iounmap(adapter->hw.hw_addr);
	pci_release_regions(pdev);

#ifdef CONFIG_E1000_MQ
	free_percpu(adapter->cpu_netdev);
	free_percpu(adapter->cpu_tx_ring);
#endif
	free_netdev(netdev);

	pci_disable_device(pdev);
}

/**
 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
 * @adapter: board private structure to initialize
 *
 * e1000_sw_init initializes the Adapter private data structure.
 * Fields are initialized based on PCI device information and
 * OS network device settings (MTU size).
 **/

static int __devinit
e1000_sw_init(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	struct net_device *netdev = adapter->netdev;
	struct pci_dev *pdev = adapter->pdev;
#ifdef CONFIG_E1000_NAPI
	int i;
#endif

	/* PCI config space info */

	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_id = pdev->subsystem_device;

	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);

	pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);

	adapter->rx_buffer_len = E1000_RXBUFFER_2048;
	adapter->rx_ps_bsize0 = E1000_RXBUFFER_256;
	hw->max_frame_size = netdev->mtu +
			     ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
	hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;

	/* identify the MAC */

	if(e1000_set_mac_type(hw)) {
		DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
		return -EIO;
	}

	/* initialize eeprom parameters */

	if(e1000_init_eeprom_params(hw)) {
		E1000_ERR("EEPROM initialization failed\n");
		return -EIO;
	}

	switch(hw->mac_type) {
	default:
		break;
	case e1000_82541:
	case e1000_82547:
	case e1000_82541_rev_2:
	case e1000_82547_rev_2:
		hw->phy_init_script = 1;
		break;
	}

	e1000_set_media_type(hw);

	hw->wait_autoneg_complete = FALSE;
	hw->tbi_compatibility_en = TRUE;
	hw->adaptive_ifs = TRUE;

	/* Copper options */

	if(hw->media_type == e1000_media_type_copper) {
		hw->mdix = AUTO_ALL_MODES;
		hw->disable_polarity_correction = FALSE;
		hw->master_slave = E1000_MASTER_SLAVE;
	}

#ifdef CONFIG_E1000_MQ
	/* Number of supported queues */
	switch (hw->mac_type) {
	case e1000_82571:
	case e1000_82572: