e1000_main.c
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上传日期:2013-04-10
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- /*******************************************************************************
-
- Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc., 59
- Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The full GNU General Public License is included in this distribution in the
- file called LICENSE.
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *******************************************************************************/
- #define __E1000_MAIN__
- #include "e1000.h"
- /* Change Log
- *
- * 4.4.12 10/15/02
- * o Clean up: use members of pci_device rather than direct calls to
- * pci_read_config_word.
- * o Bug fix: changed default flow control settings.
- * o Clean up: ethtool file now has an inclusive list for adapters in the
- * Wake-On-LAN capabilities instead of an exclusive list.
- * o Bug fix: miscellaneous WoL bug fixes.
- * o Added software interrupt for clearing rx ring
- * o Bug fix: easier to undo "forcing" of 1000/fd using ethtool.
- * o Now setting netdev->mem_end in e1000_probe.
- * o Clean up: Moved tx_timeout from interrupt context to process context
- * using schedule_task.
- *
- * 4.3.15 8/9/02
- * o Converted from Dual BSD/GPL license to GPL license.
- * o Clean up: use pci_[clear|set]_mwi rather than direct calls to
- * pci_write_config_word.
- * o Bug fix: added read-behind-write calls to post writes before delays.
- * o Bug fix: removed mdelay busy-waits in interrupt context.
- * o Clean up: direct clear of descriptor bits rather than using memset.
- * o Bug fix: added wmb() for ia-64 between descritor writes and advancing
- * descriptor tail.
- * o Feature: added locking mechanism for asf functionality.
- * o Feature: exposed two Tx and one Rx interrupt delay knobs for finer
- * control over interurpt rate tuning.
- * o Misc ethtool bug fixes.
- *
- * 4.3.2 7/5/02
- */
-
- char e1000_driver_name[] = "e1000";
- char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
- char e1000_driver_version[] = "4.4.12-k1";
- char e1000_copyright[] = "Copyright (c) 1999-2002 Intel Corporation.";
- /* e1000_pci_tbl - PCI Device ID Table
- *
- * Private driver_data field (last one) stores an index into e1000_strings
- * Wildcard entries (PCI_ANY_ID) should come last
- * Last entry must be all 0s
- *
- * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
- * Class, Class Mask, String Index }
- */
- static struct pci_device_id e1000_pci_tbl[] __devinitdata = {
- /* Intel(R) PRO/1000 Network Connection */
- {0x8086, 0x1000, 0x8086, 0x1000, 0, 0, 0},
- {0x8086, 0x1001, 0x8086, 0x1003, 0, 0, 0},
- {0x8086, 0x1004, 0x8086, 0x1004, 0, 0, 0},
- {0x8086, 0x1008, 0x8086, 0x1107, 0, 0, 0},
- {0x8086, 0x1009, 0x8086, 0x1109, 0, 0, 0},
- {0x8086, 0x100C, 0x8086, 0x1112, 0, 0, 0},
- {0x8086, 0x100E, 0x8086, 0x001E, 0, 0, 0},
- /* Compaq Gigabit Ethernet Server Adapter */
- {0x8086, 0x1000, 0x0E11, PCI_ANY_ID, 0, 0, 1},
- {0x8086, 0x1001, 0x0E11, PCI_ANY_ID, 0, 0, 1},
- {0x8086, 0x1004, 0x0E11, PCI_ANY_ID, 0, 0, 1},
- /* IBM Mobile, Desktop & Server Adapters */
- {0x8086, 0x1000, 0x1014, PCI_ANY_ID, 0, 0, 2},
- {0x8086, 0x1001, 0x1014, PCI_ANY_ID, 0, 0, 2},
- {0x8086, 0x1004, 0x1014, PCI_ANY_ID, 0, 0, 2},
- /* Generic */
- {0x8086, 0x1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x100C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x100D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x100E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x100F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1011, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1016, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x1017, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x8086, 0x101E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- /* required last entry */
- {0,}
- };
- MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
- static char *e1000_strings[] = {
- "Intel(R) PRO/1000 Network Connection",
- "Compaq Gigabit Ethernet Server Adapter",
- "IBM Mobile, Desktop & Server Adapters"
- };
- /* Local Function Prototypes */
- int e1000_up(struct e1000_adapter *adapter);
- void e1000_down(struct e1000_adapter *adapter);
- void e1000_reset(struct e1000_adapter *adapter);
- static int e1000_init_module(void);
- static void e1000_exit_module(void);
- static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
- static void e1000_remove(struct pci_dev *pdev);
- static int e1000_sw_init(struct e1000_adapter *adapter);
- static int e1000_open(struct net_device *netdev);
- static int e1000_close(struct net_device *netdev);
- static int e1000_setup_tx_resources(struct e1000_adapter *adapter);
- static int e1000_setup_rx_resources(struct e1000_adapter *adapter);
- static void e1000_configure_tx(struct e1000_adapter *adapter);
- static void e1000_configure_rx(struct e1000_adapter *adapter);
- static void e1000_setup_rctl(struct e1000_adapter *adapter);
- static void e1000_clean_tx_ring(struct e1000_adapter *adapter);
- static void e1000_clean_rx_ring(struct e1000_adapter *adapter);
- static void e1000_free_tx_resources(struct e1000_adapter *adapter);
- static void e1000_free_rx_resources(struct e1000_adapter *adapter);
- static void e1000_set_multi(struct net_device *netdev);
- static void e1000_update_phy_info(unsigned long data);
- static void e1000_watchdog(unsigned long data);
- static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
- static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
- static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
- static int e1000_set_mac(struct net_device *netdev, void *p);
- static void e1000_update_stats(struct e1000_adapter *adapter);
- static inline void e1000_irq_disable(struct e1000_adapter *adapter);
- static inline void e1000_irq_enable(struct e1000_adapter *adapter);
- static void e1000_intr(int irq, void *data, struct pt_regs *regs);
- static void e1000_clean_tx_irq(struct e1000_adapter *adapter);
- static void e1000_clean_rx_irq(struct e1000_adapter *adapter);
- static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter);
- static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
- static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
- static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
- static inline void e1000_rx_checksum(struct e1000_adapter *adapter,
- struct e1000_rx_desc *rx_desc,
- struct sk_buff *skb);
- static void e1000_tx_timeout(struct net_device *dev);
- static void e1000_tx_timeout_task(struct net_device *dev);
- static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
- static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
- static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
- static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
- static int e1000_notify_netdev(struct notifier_block *, unsigned long event, void *ptr);
- static int e1000_suspend(struct pci_dev *pdev, uint32_t state);
- #ifdef CONFIG_PM
- static int e1000_resume(struct pci_dev *pdev);
- #endif
- struct notifier_block e1000_notifier_reboot = {
- .notifier_call = e1000_notify_reboot,
- .next = NULL,
- .priority = 0
- };
- struct notifier_block e1000_notifier_netdev = {
- .notifier_call = e1000_notify_netdev,
- .next = NULL,
- .priority = 0
- };
- /* Exported from other modules */
- extern void e1000_check_options(struct e1000_adapter *adapter);
- extern void e1000_proc_dev_setup(struct e1000_adapter *adapter);
- extern void e1000_proc_dev_free(struct e1000_adapter *adapter);
- extern int e1000_ethtool_ioctl(struct net_device *netdev, struct ifreq *ifr);
- static struct pci_driver e1000_driver = {
- .name = e1000_driver_name,
- .id_table = e1000_pci_tbl,
- .probe = e1000_probe,
- .remove = __devexit_p(e1000_remove),
- /* Power Managment Hooks */
- #ifdef CONFIG_PM
- .suspend = e1000_suspend,
- .resume = e1000_resume
- #endif
- };
- MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
- MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
- MODULE_LICENSE("GPL");
- /**
- * e1000_init_module - Driver Registration Routine
- *
- * e1000_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- **/
- static int __init
- e1000_init_module(void)
- {
- int ret;
- printk(KERN_INFO "%s - version %sn",
- e1000_driver_string, e1000_driver_version);
- printk(KERN_INFO "%sn", e1000_copyright);
- ret = pci_module_init(&e1000_driver);
- if(ret >= 0) {
- register_reboot_notifier(&e1000_notifier_reboot);
- register_netdevice_notifier(&e1000_notifier_netdev);
- }
- return ret;
- }
- module_init(e1000_init_module);
- /**
- * e1000_exit_module - Driver Exit Cleanup Routine
- *
- * e1000_exit_module is called just before the driver is removed
- * from memory.
- **/
- static void __exit
- e1000_exit_module(void)
- {
- unregister_reboot_notifier(&e1000_notifier_reboot);
- unregister_netdevice_notifier(&e1000_notifier_netdev);
- pci_unregister_driver(&e1000_driver);
- }
- module_exit(e1000_exit_module);
- int
- e1000_up(struct e1000_adapter *adapter)
- {
- struct net_device *netdev = adapter->netdev;
- if(request_irq(netdev->irq, &e1000_intr, SA_SHIRQ | SA_SAMPLE_RANDOM,
- netdev->name, netdev))
- return -1;
- /* hardware has been reset, we need to reload some things */
- e1000_set_multi(netdev);
- e1000_configure_tx(adapter);
- e1000_setup_rctl(adapter);
- e1000_configure_rx(adapter);
- e1000_alloc_rx_buffers(adapter);
- mod_timer(&adapter->watchdog_timer, jiffies);
- e1000_irq_enable(adapter);
- return 0;
- }
- void
- e1000_down(struct e1000_adapter *adapter)
- {
- struct net_device *netdev = adapter->netdev;
- e1000_irq_disable(adapter);
- free_irq(netdev->irq, netdev);
- del_timer_sync(&adapter->watchdog_timer);
- del_timer_sync(&adapter->phy_info_timer);
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- e1000_reset(adapter);
- e1000_clean_tx_ring(adapter);
- e1000_clean_rx_ring(adapter);
- }
- void
- e1000_reset(struct e1000_adapter *adapter)
- {
- /* Repartition Pba for greater than 9k mtu
- * To take effect CTRL.RST is required.
- */
- if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
- E1000_WRITE_REG(&adapter->hw, PBA, E1000_JUMBO_PBA);
- else
- E1000_WRITE_REG(&adapter->hw, PBA, E1000_DEFAULT_PBA);
- adapter->hw.fc = adapter->hw.original_fc;
- e1000_reset_hw(&adapter->hw);
- if(adapter->hw.mac_type >= e1000_82544)
- E1000_WRITE_REG(&adapter->hw, WUC, 0);
- e1000_init_hw(&adapter->hw);
- e1000_reset_adaptive(&adapter->hw);
- e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
- }
- /**
- * 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;
- static int cards_found = 0;
- unsigned long mmio_start;
- int mmio_len;
- int pci_using_dac;
- int i;
- if((i = pci_enable_device(pdev)))
- return i;
- if(!(i = pci_set_dma_mask(pdev, PCI_DMA_64BIT))) {
- pci_using_dac = 1;
- } else {
- if((i = pci_set_dma_mask(pdev, PCI_DMA_32BIT))) {
- E1000_ERR("No usable DMA configuration, abortingn");
- return i;
- }
- pci_using_dac = 0;
- }
- if((i = pci_request_regions(pdev, e1000_driver_name)))
- return i;
- pci_set_master(pdev);
- netdev = alloc_etherdev(sizeof(struct e1000_adapter));
- if(!netdev)
- goto err_alloc_etherdev;
- SET_MODULE_OWNER(netdev);
- pci_set_drvdata(pdev, netdev);
- adapter = netdev->priv;
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- adapter->hw.back = adapter;
- 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)
- 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;
- netdev->tx_timeout = &e1000_tx_timeout;
- netdev->watchdog_timeo = HZ;
- 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;
- netdev->irq = pdev->irq;
- netdev->mem_start = mmio_start;
- netdev->mem_end = mmio_start + mmio_len;
- netdev->base_addr = adapter->hw.io_base;
- adapter->bd_number = cards_found;
- adapter->id_string = e1000_strings[ent->driver_data];
- /* setup the private structure */
- if(e1000_sw_init(adapter))
- goto err_sw_init;
- 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;
- } else {
- netdev->features = NETIF_F_SG;
- }
- if(pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
- /* make sure the EEPROM is good */
- if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
- printk(KERN_ERR "The EEPROM Checksum Is Not Validn");
- goto err_eeprom;
- }
- /* copy the MAC address out of the EEPROM */
- e1000_read_mac_addr(&adapter->hw);
- memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
- if(!is_valid_ether_addr(netdev->dev_addr))
- goto err_eeprom;
- e1000_read_part_num(&adapter->hw, &(adapter->part_num));
- e1000_get_bus_info(&adapter->hw);
- if((adapter->hw.mac_type == e1000_82544) &&
- (adapter->hw.bus_type == e1000_bus_type_pcix))
- adapter->max_data_per_txd = 4096;
- else
- adapter->max_data_per_txd = MAX_JUMBO_FRAME_SIZE;
- init_timer(&adapter->watchdog_timer);
- adapter->watchdog_timer.function = &e1000_watchdog;
- adapter->watchdog_timer.data = (unsigned long) 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_TQUEUE(&adapter->tx_timeout_task,
- (void (*)(void *))e1000_tx_timeout_task, netdev);
- register_netdev(netdev);
- memcpy(adapter->ifname, netdev->name, IFNAMSIZ);
- adapter->ifname[IFNAMSIZ-1] = 0;
- /* we're going to reset, so assume we have no link for now */
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- printk(KERN_INFO "%s: %sn", netdev->name, adapter->id_string);
- e1000_check_options(adapter);
- e1000_proc_dev_setup(adapter);
- /* Initial Wake on LAN setting
- * If APM wake is enabled in the EEPROM,
- * enable the ACPI Magic Packet filter
- */
- if((adapter->hw.mac_type >= e1000_82544) &&
- (E1000_READ_REG(&adapter->hw, WUC) & E1000_WUC_APME))
- adapter->wol |= E1000_WUFC_MAG;
- /* reset the hardware with the new settings */
- e1000_reset(adapter);
- cards_found++;
- return 0;
- err_sw_init:
- err_eeprom:
- iounmap(adapter->hw.hw_addr);
- err_ioremap:
- pci_release_regions(pdev);
- kfree(netdev);
- err_alloc_etherdev:
- return -ENOMEM;
- }
- /**
- * 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;
- uint32_t manc;
- if(adapter->hw.mac_type >= e1000_82540) {
- 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);
- }
- }
- unregister_netdev(netdev);
- e1000_phy_hw_reset(&adapter->hw);
- e1000_proc_dev_free(adapter);
- iounmap(adapter->hw.hw_addr);
- pci_release_regions(pdev);
- kfree(netdev);
- }
- /**
- * 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;
- /* 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;
- 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)) {
- E1000_ERR("Unknown MAC Typen");
- return -1;
- }
- /* flow control settings */
- hw->fc_high_water = E1000_FC_HIGH_THRESH;
- hw->fc_low_water = E1000_FC_LOW_THRESH;
- hw->fc_pause_time = E1000_FC_PAUSE_TIME;
- hw->fc_send_xon = 1;
- /* Media type - copper or fiber */
- if(hw->mac_type >= e1000_82543) {
- uint32_t status = E1000_READ_REG(hw, STATUS);
- if(status & E1000_STATUS_TBIMODE)
- hw->media_type = e1000_media_type_fiber;
- else
- hw->media_type = e1000_media_type_copper;
- } else {
- hw->media_type = e1000_media_type_fiber;
- }
- if(hw->mac_type < e1000_82543)
- hw->report_tx_early = 0;
- else
- hw->report_tx_early = 1;
- 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;
- }
- atomic_set(&adapter->irq_sem, 1);
- spin_lock_init(&adapter->stats_lock);
- return 0;
- }
- /**
- * e1000_open - Called when a network interface is made active
- * @netdev: network interface device structure
- *
- * Returns 0 on success, negative value on failure
- *
- * The open entry point is called when a network interface is made
- * active by the system (IFF_UP). At this point all resources needed
- * for transmit and receive operations are allocated, the interrupt
- * handler is registered with the OS, the watchdog timer is started,
- * and the stack is notified that the interface is ready.
- **/
- static int
- e1000_open(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- /* allocate transmit descriptors */
- if(e1000_setup_tx_resources(adapter))
- goto err_setup_tx;
- /* allocate receive descriptors */
- if(e1000_setup_rx_resources(adapter))
- goto err_setup_rx;
- if(e1000_up(adapter))
- goto err_up;
- return 0;
- err_up:
- e1000_free_rx_resources(adapter);
- err_setup_rx:
- e1000_free_tx_resources(adapter);
- err_setup_tx:
- e1000_reset(adapter);
- return -EBUSY;
- }
- /**
- * e1000_close - Disables a network interface
- * @netdev: network interface device structure
- *
- * Returns 0, this is not allowed to fail
- *
- * The close entry point is called when an interface is de-activated
- * by the OS. The hardware is still under the drivers control, but
- * needs to be disabled. A global MAC reset is issued to stop the
- * hardware, and all transmit and receive resources are freed.
- **/
- static int
- e1000_close(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- e1000_down(adapter);
- e1000_free_tx_resources(adapter);
- e1000_free_rx_resources(adapter);
- return 0;
- }
- /**
- * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
- static int
- e1000_setup_tx_resources(struct e1000_adapter *adapter)
- {
- struct e1000_desc_ring *txdr = &adapter->tx_ring;
- struct pci_dev *pdev = adapter->pdev;
- int size;
- size = sizeof(struct e1000_buffer) * txdr->count;
- txdr->buffer_info = kmalloc(size, GFP_KERNEL);
- if(!txdr->buffer_info) {
- return -ENOMEM;
- }
- memset(txdr->buffer_info, 0, size);
- /* round up to nearest 4K */
- txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
- E1000_ROUNDUP(txdr->size, 4096);
- txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
- if(!txdr->desc) {
- kfree(txdr->buffer_info);
- return -ENOMEM;
- }
- memset(txdr->desc, 0, txdr->size);
- txdr->next_to_use = 0;
- txdr->next_to_clean = 0;
- return 0;
- }
- /**
- * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx unit of the MAC after a reset.
- **/
- static void
- e1000_configure_tx(struct e1000_adapter *adapter)
- {
- uint64_t tdba = adapter->tx_ring.dma;
- uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc);
- uint32_t tctl, tipg;
- E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL));
- E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
- E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen);
- /* Setup the HW Tx Head and Tail descriptor pointers */
- E1000_WRITE_REG(&adapter->hw, TDH, 0);
- E1000_WRITE_REG(&adapter->hw, TDT, 0);
- /* Set the default values for the Tx Inter Packet Gap timer */
- switch (adapter->hw.mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- tipg = DEFAULT_82542_TIPG_IPGT;
- tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
- tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
- break;
- default:
- if(adapter->hw.media_type == e1000_media_type_fiber)
- tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
- else
- tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
- tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
- tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
- }
- E1000_WRITE_REG(&adapter->hw, TIPG, tipg);
- /* Set the Tx Interrupt Delay register */
- E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
- if(adapter->hw.mac_type >= e1000_82540)
- E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay);
- /* Program the Transmit Control Register */
- tctl = E1000_READ_REG(&adapter->hw, TCTL);
- tctl &= ~E1000_TCTL_CT;
- tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
- E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
- e1000_config_collision_dist(&adapter->hw);
- /* Setup Transmit Descriptor Settings for this adapter */
- adapter->txd_cmd = E1000_TXD_CMD_IFCS | E1000_TXD_CMD_IDE;
- if(adapter->hw.report_tx_early == 1)
- adapter->txd_cmd |= E1000_TXD_CMD_RS;
- else
- adapter->txd_cmd |= E1000_TXD_CMD_RPS;
- }
- /**
- * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
- * @adapter: board private structure
- *
- * Returns 0 on success, negative on failure
- **/
- static int
- e1000_setup_rx_resources(struct e1000_adapter *adapter)
- {
- struct e1000_desc_ring *rxdr = &adapter->rx_ring;
- struct pci_dev *pdev = adapter->pdev;
- int size;
- size = sizeof(struct e1000_buffer) * rxdr->count;
- rxdr->buffer_info = kmalloc(size, GFP_KERNEL);
- if(!rxdr->buffer_info) {
- return -ENOMEM;
- }
- memset(rxdr->buffer_info, 0, size);
- /* Round up to nearest 4K */
- rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
- E1000_ROUNDUP(rxdr->size, 4096);
- rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
- if(!rxdr->desc) {
- kfree(rxdr->buffer_info);
- return -ENOMEM;
- }
- memset(rxdr->desc, 0, rxdr->size);
- rxdr->next_to_clean = 0;
- rxdr->next_to_use = 0;
- return 0;
- }
- /**
- * e1000_setup_rctl - configure the receive control register
- * @adapter: Board private structure
- **/
- static void
- e1000_setup_rctl(struct e1000_adapter *adapter)
- {
- uint32_t rctl;
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
- rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
- E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
- (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
- if(adapter->hw.tbi_compatibility_on == 1)
- rctl |= E1000_RCTL_SBP;
- else
- rctl &= ~E1000_RCTL_SBP;
- rctl &= ~(E1000_RCTL_SZ_4096);
- switch (adapter->rx_buffer_len) {
- case E1000_RXBUFFER_2048:
- default:
- rctl |= E1000_RCTL_SZ_2048;
- rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
- break;
- case E1000_RXBUFFER_4096:
- rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
- break;
- case E1000_RXBUFFER_8192:
- rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
- break;
- case E1000_RXBUFFER_16384:
- rctl |= E1000_RCTL_SZ_16384 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
- break;
- }
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- }
- /**
- * e1000_configure_rx - Configure 8254x Receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
- static void
- e1000_configure_rx(struct e1000_adapter *adapter)
- {
- uint64_t rdba = adapter->rx_ring.dma;
- uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc);
- uint32_t rctl;
- uint32_t rxcsum;
- /* make sure receives are disabled while setting up the descriptors */
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN);
- /* set the Receive Delay Timer Register */
- E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay);
- if(adapter->hw.mac_type >= e1000_82540) {
- E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay);
- /* Set the interrupt throttling rate. Value is calculated
- * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */
- #define MAX_INTS_PER_SEC 8000
- #define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256)
- E1000_WRITE_REG(&adapter->hw, ITR, DEFAULT_ITR);
- }
- /* Setup the Base and Length of the Rx Descriptor Ring */
- E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL));
- E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
- E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen);
- /* Setup the HW Rx Head and Tail Descriptor Pointers */
- E1000_WRITE_REG(&adapter->hw, RDH, 0);
- E1000_WRITE_REG(&adapter->hw, RDT, 0);
- /* Enable 82543 Receive Checksum Offload for TCP and UDP */
- if((adapter->hw.mac_type >= e1000_82543) &&
- (adapter->rx_csum == TRUE)) {
- rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM);
- rxcsum |= E1000_RXCSUM_TUOFL;
- E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum);
- }
- /* Enable Receives */
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- }
- /**
- * e1000_free_tx_resources - Free Tx Resources
- * @adapter: board private structure
- *
- * Free all transmit software resources
- **/
- static void
- e1000_free_tx_resources(struct e1000_adapter *adapter)
- {
- struct pci_dev *pdev = adapter->pdev;
- e1000_clean_tx_ring(adapter);
- kfree(adapter->tx_ring.buffer_info);
- adapter->tx_ring.buffer_info = NULL;
- pci_free_consistent(pdev, adapter->tx_ring.size,
- adapter->tx_ring.desc, adapter->tx_ring.dma);
- adapter->tx_ring.desc = NULL;
- }
- /**
- * e1000_clean_tx_ring - Free Tx Buffers
- * @adapter: board private structure
- **/
- static void
- e1000_clean_tx_ring(struct e1000_adapter *adapter)
- {
- struct pci_dev *pdev = adapter->pdev;
- unsigned long size;
- int i;
- /* Free all the Tx ring sk_buffs */
- for(i = 0; i < adapter->tx_ring.count; i++) {
- if(adapter->tx_ring.buffer_info[i].skb) {
- pci_unmap_page(pdev,
- adapter->tx_ring.buffer_info[i].dma,
- adapter->tx_ring.buffer_info[i].length,
- PCI_DMA_TODEVICE);
- dev_kfree_skb(adapter->tx_ring.buffer_info[i].skb);
- adapter->tx_ring.buffer_info[i].skb = NULL;
- }
- }
- size = sizeof(struct e1000_buffer) * adapter->tx_ring.count;
- memset(adapter->tx_ring.buffer_info, 0, size);
- /* Zero out the descriptor ring */
- memset(adapter->tx_ring.desc, 0, adapter->tx_ring.size);
- adapter->tx_ring.next_to_use = 0;
- adapter->tx_ring.next_to_clean = 0;
- E1000_WRITE_REG(&adapter->hw, TDH, 0);
- E1000_WRITE_REG(&adapter->hw, TDT, 0);
- }
- /**
- * e1000_free_rx_resources - Free Rx Resources
- * @adapter: board private structure
- *
- * Free all receive software resources
- **/
- static void
- e1000_free_rx_resources(struct e1000_adapter *adapter)
- {
- struct pci_dev *pdev = adapter->pdev;
- e1000_clean_rx_ring(adapter);
- kfree(adapter->rx_ring.buffer_info);
- adapter->rx_ring.buffer_info = NULL;
- pci_free_consistent(pdev, adapter->rx_ring.size,
- adapter->rx_ring.desc, adapter->rx_ring.dma);
- adapter->rx_ring.desc = NULL;
- }
- /**
- * e1000_clean_rx_ring - Free Rx Buffers
- * @adapter: board private structure
- **/
- static void
- e1000_clean_rx_ring(struct e1000_adapter *adapter)
- {
- struct pci_dev *pdev = adapter->pdev;
- unsigned long size;
- int i;
- /* Free all the Rx ring sk_buffs */
- for(i = 0; i < adapter->rx_ring.count; i++) {
- if(adapter->rx_ring.buffer_info[i].skb) {
- pci_unmap_single(pdev,
- adapter->rx_ring.buffer_info[i].dma,
- adapter->rx_ring.buffer_info[i].length,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb(adapter->rx_ring.buffer_info[i].skb);
- adapter->rx_ring.buffer_info[i].skb = NULL;
- }
- }
- size = sizeof(struct e1000_buffer) * adapter->rx_ring.count;
- memset(adapter->rx_ring.buffer_info, 0, size);
- /* Zero out the descriptor ring */
- memset(adapter->rx_ring.desc, 0, adapter->rx_ring.size);
- adapter->rx_ring.next_to_clean = 0;
- adapter->rx_ring.next_to_use = 0;
- E1000_WRITE_REG(&adapter->hw, RDH, 0);
- E1000_WRITE_REG(&adapter->hw, RDT, 0);
- }
- /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
- * and memory write and invalidate disabled for certain operations
- */
- static void
- e1000_enter_82542_rst(struct e1000_adapter *adapter)
- {
- struct net_device *netdev = adapter->netdev;
- uint32_t rctl;
- e1000_pci_clear_mwi(&adapter->hw);
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl |= E1000_RCTL_RST;
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- E1000_WRITE_FLUSH(&adapter->hw);
- mdelay(5);
- if(netif_running(netdev))
- e1000_clean_rx_ring(adapter);
- }
- static void
- e1000_leave_82542_rst(struct e1000_adapter *adapter)
- {
- struct net_device *netdev = adapter->netdev;
- uint32_t rctl;
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl &= ~E1000_RCTL_RST;
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- E1000_WRITE_FLUSH(&adapter->hw);
- mdelay(5);
- if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
- e1000_pci_set_mwi(&adapter->hw);
- if(netif_running(netdev)) {
- e1000_configure_rx(adapter);
- e1000_alloc_rx_buffers(adapter);
- }
- }
- /**
- * e1000_set_mac - Change the Ethernet Address of the NIC
- * @netdev: network interface device structure
- * @p: pointer to an address structure
- *
- * Returns 0 on success, negative on failure
- **/
- static int
- e1000_set_mac(struct net_device *netdev, void *p)
- {
- struct e1000_adapter *adapter = netdev->priv;
- struct sockaddr *addr = p;
- /* 82542 2.0 needs to be in reset to write receive address registers */
- if(adapter->hw.mac_type == e1000_82542_rev2_0)
- e1000_enter_82542_rst(adapter);
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
- e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
- if(adapter->hw.mac_type == e1000_82542_rev2_0)
- e1000_leave_82542_rst(adapter);
- return 0;
- }
- /**
- * e1000_set_multi - Multicast and Promiscuous mode set
- * @netdev: network interface device structure
- *
- * The set_multi entry point is called whenever the multicast address
- * list or the network interface flags are updated. This routine is
- * resposible for configuring the hardware for proper multicast,
- * promiscuous mode, and all-multi behavior.
- **/
- static void
- e1000_set_multi(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- struct e1000_hw *hw = &adapter->hw;
- struct dev_mc_list *mc_ptr;
- uint32_t rctl;
- uint32_t hash_value;
- int i;
- /* Check for Promiscuous and All Multicast modes */
- rctl = E1000_READ_REG(hw, RCTL);
- if(netdev->flags & IFF_PROMISC) {
- rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
- } else if(netdev->flags & IFF_ALLMULTI) {
- rctl |= E1000_RCTL_MPE;
- rctl &= ~E1000_RCTL_UPE;
- } else {
- rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
- }
- E1000_WRITE_REG(hw, RCTL, rctl);
- /* 82542 2.0 needs to be in reset to write receive address registers */
- if(hw->mac_type == e1000_82542_rev2_0)
- e1000_enter_82542_rst(adapter);
- /* load the first 15 multicast address into the exact filters 1-15
- * RAR 0 is used for the station MAC adddress
- * if there are not 15 addresses, go ahead and clear the filters
- */
- mc_ptr = netdev->mc_list;
- for(i = 1; i < E1000_RAR_ENTRIES; i++) {
- if(mc_ptr) {
- e1000_rar_set(hw, mc_ptr->dmi_addr, i);
- mc_ptr = mc_ptr->next;
- } else {
- E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
- E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
- }
- }
- /* clear the old settings from the multicast hash table */
- for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
- E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
- /* load any remaining addresses into the hash table */
- for(; mc_ptr; mc_ptr = mc_ptr->next) {
- hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
- e1000_mta_set(hw, hash_value);
- }
- if(hw->mac_type == e1000_82542_rev2_0)
- e1000_leave_82542_rst(adapter);
- }
- /* need to wait a few seconds after link up to get diagnostic information from the phy */
- static void
- e1000_update_phy_info(unsigned long data)
- {
- struct e1000_adapter *adapter = (struct e1000_adapter *) data;
- e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
- }
- /**
- * e1000_watchdog - Timer Call-back
- * @data: pointer to netdev cast into an unsigned long
- **/
- static void
- e1000_watchdog(unsigned long data)
- {
- struct e1000_adapter *adapter = (struct e1000_adapter *) data;
- struct net_device *netdev = adapter->netdev;
- struct e1000_desc_ring *txdr = &adapter->tx_ring;
- int i;
- e1000_check_for_link(&adapter->hw);
- if(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU) {
- if(!netif_carrier_ok(netdev)) {
- e1000_get_speed_and_duplex(&adapter->hw,
- &adapter->link_speed,
- &adapter->link_duplex);
- printk(KERN_INFO
- "e1000: %s NIC Link is Up %d Mbps %sn",
- netdev->name, adapter->link_speed,
- adapter->link_duplex == FULL_DUPLEX ?
- "Full Duplex" : "Half Duplex");
- netif_carrier_on(netdev);
- netif_wake_queue(netdev);
- mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
- }
- } else {
- if(netif_carrier_ok(netdev)) {
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- printk(KERN_INFO
- "e1000: %s NIC Link is Downn",
- netdev->name);
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
- }
- }
- e1000_update_stats(adapter);
- e1000_update_adaptive(&adapter->hw);
- /* Cause software interrupt to ensure rx ring is cleaned */
- E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
- /* Early detection of hung controller */
- i = txdr->next_to_clean;
- if(txdr->buffer_info[i].dma &&
- time_after(jiffies, txdr->buffer_info[i].time_stamp + HZ) &&
- !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF))
- netif_stop_queue(netdev);
- /* Reset the timer */
- mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
- }
- #define E1000_TX_FLAGS_CSUM 0x00000001
- #define E1000_TX_FLAGS_VLAN 0x00000002
- #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
- #define E1000_TX_FLAGS_VLAN_SHIFT 16
- static inline boolean_t
- e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
- {
- struct e1000_context_desc *context_desc;
- int i;
- uint8_t css, cso;
- if(skb->ip_summed == CHECKSUM_HW) {
- css = skb->h.raw - skb->data;
- cso = (skb->h.raw + skb->csum) - skb->data;
- i = adapter->tx_ring.next_to_use;
- context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
- context_desc->upper_setup.tcp_fields.tucss = css;
- context_desc->upper_setup.tcp_fields.tucso = cso;
- context_desc->upper_setup.tcp_fields.tucse = 0;
- context_desc->tcp_seg_setup.data = 0;
- context_desc->cmd_and_length =
- cpu_to_le32(adapter->txd_cmd | E1000_TXD_CMD_DEXT);
- i = (i + 1) % adapter->tx_ring.count;
- adapter->tx_ring.next_to_use = i;
- return TRUE;
- }
- return FALSE;
- }
- static inline int
- e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb)
- {
- struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
- int len, offset, size, count, i;
- int f;
- len = skb->len - skb->data_len;
- i = (tx_ring->next_to_use + tx_ring->count - 1) % tx_ring->count;
- count = 0;
- offset = 0;
- while(len) {
- i = (i + 1) % tx_ring->count;
- size = min(len, adapter->max_data_per_txd);
- tx_ring->buffer_info[i].length = size;
- tx_ring->buffer_info[i].dma =
- pci_map_single(adapter->pdev,
- skb->data + offset,
- size,
- PCI_DMA_TODEVICE);
- tx_ring->buffer_info[i].time_stamp = jiffies;
- len -= size;
- offset += size;
- count++;
- }
- for(f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
- struct skb_frag_struct *frag;
- frag = &skb_shinfo(skb)->frags[f];
- len = frag->size;
- offset = 0;
- while(len) {
- i = (i + 1) % tx_ring->count;
- size = min(len, adapter->max_data_per_txd);
- tx_ring->buffer_info[i].length = size;
- tx_ring->buffer_info[i].dma =
- pci_map_page(adapter->pdev,
- frag->page,
- frag->page_offset + offset,
- size,
- PCI_DMA_TODEVICE);
- len -= size;
- offset += size;
- count++;
- }
- }
- tx_ring->buffer_info[i].skb = skb;
- return count;
- }
- static inline void
- e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
- {
- struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
- struct e1000_tx_desc *tx_desc = NULL;
- uint32_t txd_upper, txd_lower;
- int i;
- txd_upper = 0;
- txd_lower = adapter->txd_cmd;
- if(tx_flags & E1000_TX_FLAGS_CSUM) {
- txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
- txd_upper |= E1000_TXD_POPTS_TXSM << 8;
- }
- if(tx_flags & E1000_TX_FLAGS_VLAN) {
- txd_lower |= E1000_TXD_CMD_VLE;
- txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
- }
- i = tx_ring->next_to_use;
- while(count--) {
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- tx_desc->buffer_addr = cpu_to_le64(tx_ring->buffer_info[i].dma);
- tx_desc->lower.data =
- cpu_to_le32(txd_lower | tx_ring->buffer_info[i].length);
- tx_desc->upper.data = cpu_to_le32(txd_upper);
- i = (i + 1) % tx_ring->count;
- }
- tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP);
- /* Force memory writes to complete before letting h/w
- * know there are new descriptors to fetch. (Only
- * applicable for weak-ordered memory model archs,
- * such as IA-64). */
- wmb();
- tx_ring->next_to_use = i;
- E1000_WRITE_REG(&adapter->hw, TDT, i);
- }
- #define TXD_USE_COUNT(S, X) (((S) / (X)) + (((S) % (X)) ? 1 : 0))
- static int
- e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- int tx_flags = 0, count;
- int f;
- count = TXD_USE_COUNT(skb->len - skb->data_len,
- adapter->max_data_per_txd);
- for(f = 0; f < skb_shinfo(skb)->nr_frags; f++)
- count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
- adapter->max_data_per_txd);
- if(skb->ip_summed == CHECKSUM_HW)
- count++;
- if(E1000_DESC_UNUSED(&adapter->tx_ring) < count) {
- netif_stop_queue(netdev);
- return 1;
- }
- if(e1000_tx_csum(adapter, skb))
- tx_flags |= E1000_TX_FLAGS_CSUM;
- if(adapter->vlgrp && vlan_tx_tag_present(skb)) {
- tx_flags |= E1000_TX_FLAGS_VLAN;
- tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
- }
- count = e1000_tx_map(adapter, skb);
- e1000_tx_queue(adapter, count, tx_flags);
- netdev->trans_start = jiffies;
- return 0;
- }
- /**
- * e1000_tx_timeout - Respond to a Tx Hang
- * @netdev: network interface device structure
- **/
- static void
- e1000_tx_timeout(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- /* Do the reset outside of interrupt context */
- schedule_task(&adapter->tx_timeout_task);
- }
- static void
- e1000_tx_timeout_task(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- netif_device_detach(netdev);
- e1000_down(adapter);
- e1000_up(adapter);
- netif_device_attach(netdev);
- }
- /**
- * e1000_get_stats - Get System Network Statistics
- * @netdev: network interface device structure
- *
- * Returns the address of the device statistics structure.
- * The statistics are actually updated from the timer callback.
- **/
- static struct net_device_stats *
- e1000_get_stats(struct net_device *netdev)
- {
- struct e1000_adapter *adapter = netdev->priv;
- return &adapter->net_stats;
- }
- /**
- * e1000_change_mtu - Change the Maximum Transfer Unit
- * @netdev: network interface device structure
- * @new_mtu: new value for maximum frame size
- *
- * Returns 0 on success, negative on failure
- **/
- static int
- e1000_change_mtu(struct net_device *netdev, int new_mtu)
- {
- struct e1000_adapter *adapter = netdev->priv;
- int old_mtu = adapter->rx_buffer_len;
- int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
- if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
- (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- E1000_ERR("Invalid MTU settingn");
- return -EINVAL;
- }
- if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) {
- adapter->rx_buffer_len = E1000_RXBUFFER_2048;
- } else if(adapter->hw.mac_type < e1000_82543) {
- E1000_ERR("Jumbo Frames not supported on 82542n");
- return -EINVAL;
- } else if(max_frame <= E1000_RXBUFFER_4096) {
- adapter->rx_buffer_len = E1000_RXBUFFER_4096;
- } else if(max_frame <= E1000_RXBUFFER_8192) {
- adapter->rx_buffer_len = E1000_RXBUFFER_8192;
- } else {
- adapter->rx_buffer_len = E1000_RXBUFFER_16384;
- }
- if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
- e1000_down(adapter);
- e1000_up(adapter);
- }
- netdev->mtu = new_mtu;
- adapter->hw.max_frame_size = max_frame;
- return 0;
- }
- /**
- * e1000_update_stats - Update the board statistics counters
- * @adapter: board private structure
- **/
- static void
- e1000_update_stats(struct e1000_adapter *adapter)
- {
- struct e1000_hw *hw = &adapter->hw;
- unsigned long flags;
- uint16_t phy_tmp;
- #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
- spin_lock_irqsave(&adapter->stats_lock, flags);
- /* these counters are modified from e1000_adjust_tbi_stats,
- * called from the interrupt context, so they must only
- * be written while holding adapter->stats_lock
- */
- adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
- adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
- adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
- adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
- adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
- adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
- adapter->stats.roc += E1000_READ_REG(hw, ROC);
- adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
- adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
- adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
- adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
- adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
- adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
- /* the rest of the counters are only modified here */
- adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
- adapter->stats.mpc += E1000_READ_REG(hw, MPC);
- adapter->stats.scc += E1000_READ_REG(hw, SCC);
- adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
- adapter->stats.mcc += E1000_READ_REG(hw, MCC);
- adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
- adapter->stats.dc += E1000_READ_REG(hw, DC);
- adapter->stats.sec += E1000_READ_REG(hw, SEC);
- adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
- adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
- adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
- adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
- adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
- adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
- adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
- adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
- adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
- adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
- adapter->stats.ruc += E1000_READ_REG(hw, RUC);
- adapter->stats.rfc += E1000_READ_REG(hw, RFC);
- adapter->stats.rjc += E1000_READ_REG(hw, RJC);
- adapter->stats.torl += E1000_READ_REG(hw, TORL);
- adapter->stats.torh += E1000_READ_REG(hw, TORH);
- adapter->stats.totl += E1000_READ_REG(hw, TOTL);
- adapter->stats.toth += E1000_READ_REG(hw, TOTH);
- adapter->stats.tpr += E1000_READ_REG(hw, TPR);
- adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
- adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
- adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
- adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
- adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
- adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
- adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
- adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
- /* used for adaptive IFS */
- hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
- adapter->stats.tpt += hw->tx_packet_delta;
- hw->collision_delta = E1000_READ_REG(hw, COLC);
- adapter->stats.colc += hw->collision_delta;
- if(hw->mac_type >= e1000_82543) {
- adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
- adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
- adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
- adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
- adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
- adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
- }
- /* Fill out the OS statistics structure */
- adapter->net_stats.rx_packets = adapter->stats.gprc;
- adapter->net_stats.tx_packets = adapter->stats.gptc;
- adapter->net_stats.rx_bytes = adapter->stats.gorcl;
- adapter->net_stats.tx_bytes = adapter->stats.gotcl;
- adapter->net_stats.multicast = adapter->stats.mprc;
- adapter->net_stats.collisions = adapter->stats.colc;
- /* Rx Errors */
- adapter->net_stats.rx_errors = adapter->stats.rxerrc +
- adapter->stats.crcerrs + adapter->stats.algnerrc +
- adapter->stats.rlec + adapter->stats.rnbc +
- adapter->stats.mpc + adapter->stats.cexterr;
- adapter->net_stats.rx_dropped = adapter->stats.rnbc;
- adapter->net_stats.rx_length_errors = adapter->stats.rlec;
- adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
- adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
- adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
- adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
- /* Tx Errors */
- adapter->net_stats.tx_errors = adapter->stats.ecol +
- adapter->stats.latecol;
- adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
- adapter->net_stats.tx_window_errors = adapter->stats.latecol;
- adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
- /* Tx Dropped needs to be maintained elsewhere */
- /* Phy Stats */
- if(hw->media_type == e1000_media_type_copper) {
- if((adapter->link_speed == SPEED_1000) &&
- (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
- phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
- adapter->phy_stats.idle_errors += phy_tmp;
- }
- if((hw->mac_type <= e1000_82546) &&
- !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
- adapter->phy_stats.receive_errors += phy_tmp;
- }
- }
- /**
- * e1000_irq_disable - Mask off interrupt generation on the NIC
- * @adapter: board private structure
- **/
- static inline void
- e1000_irq_disable(struct e1000_adapter *adapter)
- {
- atomic_inc(&adapter->irq_sem);
- E1000_WRITE_REG(&adapter->hw, IMC, ~0);
- E1000_WRITE_FLUSH(&adapter->hw);
- synchronize_irq();
- }
- /**
- * e1000_irq_enable - Enable default interrupt generation settings
- * @adapter: board private structure
- **/
- static inline void
- e1000_irq_enable(struct e1000_adapter *adapter)
- {
- if(atomic_dec_and_test(&adapter->irq_sem)) {
- E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
- E1000_WRITE_FLUSH(&adapter->hw);
- }
- }
- /**
- * e1000_intr - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- * @pt_regs: CPU registers structure
- **/
- static void
- e1000_intr(int irq, void *data, struct pt_regs *regs)
- {
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t icr;
- int i = E1000_MAX_INTR;
- while(i && (icr = E1000_READ_REG(&adapter->hw, ICR))) {
- if(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
- adapter->hw.get_link_status = 1;
- mod_timer(&adapter->watchdog_timer, jiffies);
- }
- e1000_clean_rx_irq(adapter);
- e1000_clean_tx_irq(adapter);
- i--;
- }
- }
- /**
- * e1000_clean_tx_irq - Reclaim resources after transmit completes
- * @adapter: board private structure
- **/
- static void
- e1000_clean_tx_irq(struct e1000_adapter *adapter)
- {
- struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_tx_desc *tx_desc;
- int i;
- i = tx_ring->next_to_clean;
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- while(tx_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
- if(tx_ring->buffer_info[i].dma) {
- pci_unmap_page(pdev,
- tx_ring->buffer_info[i].dma,
- tx_ring->buffer_info[i].length,
- PCI_DMA_TODEVICE);
- tx_ring->buffer_info[i].dma = 0;
- }
- if(tx_ring->buffer_info[i].skb) {
- dev_kfree_skb_any(tx_ring->buffer_info[i].skb);
- tx_ring->buffer_info[i].skb = NULL;
- }
- tx_desc->upper.data = 0;
- i = (i + 1) % tx_ring->count;
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- }
- tx_ring->next_to_clean = i;
- if(netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
- (E1000_DESC_UNUSED(tx_ring) > E1000_TX_QUEUE_WAKE)) {
- netif_wake_queue(netdev);
- }
- }
- /**
- * e1000_clean_rx_irq - Send received data up the network stack,
- * @adapter: board private structure
- **/
- static void
- e1000_clean_rx_irq(struct e1000_adapter *adapter)
- {
- struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_rx_desc *rx_desc;
- struct sk_buff *skb;
- unsigned long flags;
- uint32_t length;
- uint8_t last_byte;
- int i;
- i = rx_ring->next_to_clean;
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- while(rx_desc->status & E1000_RXD_STAT_DD) {
- pci_unmap_single(pdev,
- rx_ring->buffer_info[i].dma,
- rx_ring->buffer_info[i].length,
- PCI_DMA_FROMDEVICE);
- skb = rx_ring->buffer_info[i].skb;
- length = le16_to_cpu(rx_desc->length);
- if(!(rx_desc->status & E1000_RXD_STAT_EOP)) {
- /* All receives must fit into a single buffer */
- E1000_DBG("Receive packet consumed multiple buffersn");
- dev_kfree_skb_irq(skb);
- rx_desc->status = 0;
- rx_ring->buffer_info[i].skb = NULL;
- i = (i + 1) % rx_ring->count;
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- continue;
- }
- if(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
- last_byte = *(skb->data + length - 1);
- if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
- rx_desc->errors, length, last_byte)) {
- spin_lock_irqsave(&adapter->stats_lock, flags);
- e1000_tbi_adjust_stats(&adapter->hw,
- &adapter->stats,
- length, skb->data);
- spin_unlock_irqrestore(&adapter->stats_lock,
- flags);
- length--;
- } else {
- dev_kfree_skb_irq(skb);
- rx_desc->status = 0;
- rx_ring->buffer_info[i].skb = NULL;
- i = (i + 1) % rx_ring->count;
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- continue;
- }
- }
- /* Good Receive */
- skb_put(skb, length - ETHERNET_FCS_SIZE);
- /* Receive Checksum Offload */
- e1000_rx_checksum(adapter, rx_desc, skb);
- skb->protocol = eth_type_trans(skb, netdev);
- if(adapter->vlgrp && (rx_desc->status & E1000_RXD_STAT_VP)) {
- vlan_hwaccel_rx(skb, adapter->vlgrp,
- (rx_desc->special & E1000_RXD_SPC_VLAN_MASK));
- } else {
- netif_rx(skb);
- }
- netdev->last_rx = jiffies;
- rx_desc->status = 0;
- rx_ring->buffer_info[i].skb = NULL;
- i = (i + 1) % rx_ring->count;
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- }
- rx_ring->next_to_clean = i;
- e1000_alloc_rx_buffers(adapter);
- }
- /**
- * e1000_alloc_rx_buffers - Replace used receive buffers
- * @data: address of board private structure
- **/
- static void
- e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
- {
- struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_rx_desc *rx_desc;
- struct sk_buff *skb;
- int reserve_len;
- int i;
- reserve_len = 2;
- i = rx_ring->next_to_use;
- while(!rx_ring->buffer_info[i].skb) {
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- skb = dev_alloc_skb(adapter->rx_buffer_len + reserve_len);
- if(!skb) {
- /* Better luck next round */
- break;
- }
- /* Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- skb_reserve(skb, reserve_len);
- skb->dev = netdev;
- rx_ring->buffer_info[i].skb = skb;
- rx_ring->buffer_info[i].length = adapter->rx_buffer_len;
- rx_ring->buffer_info[i].dma =
- pci_map_single(pdev,
- skb->data,
- adapter->rx_buffer_len,
- PCI_DMA_FROMDEVICE);
- rx_desc->buffer_addr = cpu_to_le64(rx_ring->buffer_info[i].dma);
- if(!(i % E1000_RX_BUFFER_WRITE)) {
- /* Force memory writes to complete before letting h/w
- * know there are new descriptors to fetch. (Only
- * applicable for weak-ordered memory model archs,
- * such as IA-64). */
- wmb();
- E1000_WRITE_REG(&adapter->hw, RDT, i);
- }
- i = (i + 1) % rx_ring->count;
- }
- rx_ring->next_to_use = i;
- }
- /**
- * e1000_ioctl -
- * @netdev:
- * @ifreq:
- * @cmd:
- **/
- static int
- e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
- {
- switch (cmd) {
- case SIOCETHTOOL:
- return e1000_ethtool_ioctl(netdev, ifr);
- default:
- return -EOPNOTSUPP;
- }
- }
- /**
- * e1000_rx_checksum - Receive Checksum Offload for 82543
- * @adapter: board private structure
- * @rx_desc: receive descriptor
- * @sk_buff: socket buffer with received data
- **/
- static inline void
- e1000_rx_checksum(struct e1000_adapter *adapter,
- struct e1000_rx_desc *rx_desc,
- struct sk_buff *skb)
- {
- /* 82543 or newer only */
- if((adapter->hw.mac_type < e1000_82543) ||
- /* Ignore Checksum bit is set */
- (rx_desc->status & E1000_RXD_STAT_IXSM) ||
- /* TCP Checksum has not been calculated */
- (!(rx_desc->status & E1000_RXD_STAT_TCPCS))) {
- skb->ip_summed = CHECKSUM_NONE;
- return;
- }
- /* At this point we know the hardware did the TCP checksum */
- /* now look at the TCP checksum error bit */
- if(rx_desc->errors & E1000_RXD_ERR_TCPE) {
- /* let the stack verify checksum errors */
- skb->ip_summed = CHECKSUM_NONE;
- adapter->hw_csum_err++;
- } else {
- /* TCP checksum is good */
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- adapter->hw_csum_good++;
- }
- }
- void
- e1000_pci_set_mwi(struct e1000_hw *hw)
- {
- struct e1000_adapter *adapter = hw->back;
- pci_set_mwi(adapter->pdev);
- }
- void
- e1000_pci_clear_mwi(struct e1000_hw *hw)
- {
- struct e1000_adapter *adapter = hw->back;
- pci_clear_mwi(adapter->pdev);
- }
- void
- e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
- {
- struct e1000_adapter *adapter = hw->back;
- pci_read_config_word(adapter->pdev, reg, value);
- }
- void
- e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
- {
- struct e1000_adapter *adapter = hw->back;
- pci_write_config_word(adapter->pdev, reg, *value);
- }
- uint32_t
- e1000_io_read(struct e1000_hw *hw, uint32_t port)
- {
- return inl(port);
- }
- void
- e1000_io_write(struct e1000_hw *hw, uint32_t port, uint32_t value)
- {
- outl(value, port);
- }
- static void
- e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
- {
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t ctrl, rctl;
- e1000_irq_disable(adapter);
- adapter->vlgrp = grp;
- if(grp) {
- /* enable VLAN tag insert/strip */
- E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
- ctrl = E1000_READ_REG(&adapter->hw, CTRL);
- ctrl |= E1000_CTRL_VME;
- E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
- /* enable VLAN receive filtering */
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl |= E1000_RCTL_VFE;
- rctl &= ~E1000_RCTL_CFIEN;
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- } else {
- /* disable VLAN tag insert/strip */
- ctrl = E1000_READ_REG(&adapter->hw, CTRL);
- ctrl &= ~E1000_CTRL_VME;
- E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
- /* disable VLAN filtering */
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl &= ~E1000_RCTL_VFE;
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- }
- e1000_irq_enable(adapter);
- }
- static void
- e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
- {
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t vfta, index;
- /* add VID to filter table */
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
- vfta |= (1 << (vid & 0x1F));
- e1000_write_vfta(&adapter->hw, index, vfta);
- }
- static void
- e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
- {
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t vfta, index;
- e1000_irq_disable(adapter);
- if(adapter->vlgrp)
- adapter->vlgrp->vlan_devices[vid] = NULL;
- e1000_irq_enable(adapter);
- /* remove VID from filter table*/
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
- vfta &= ~(1 << (vid & 0x1F));
- e1000_write_vfta(&adapter->hw, index, vfta);
- }
- static int
- e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
- {
- struct pci_dev *pdev = NULL;
- switch(event) {
- case SYS_DOWN:
- case SYS_HALT:
- case SYS_POWER_OFF:
- pci_for_each_dev(pdev) {
- if(pci_dev_driver(pdev) == &e1000_driver)
- e1000_suspend(pdev, 3);
- }
- }
- return NOTIFY_DONE;
- }
- static int
- e1000_notify_netdev(struct notifier_block *nb, unsigned long event, void *p)
- {
- struct e1000_adapter *adapter;
- struct net_device *netdev = p;
- if(netdev == NULL)
- return NOTIFY_DONE;
- switch(event) {
- case NETDEV_CHANGENAME:
- if(netdev->open == e1000_open) {
- adapter = netdev->priv;
- /* rename the proc nodes the easy way */
- e1000_proc_dev_free(adapter);
- memcpy(adapter->ifname, netdev->name, IFNAMSIZ);
- adapter->ifname[IFNAMSIZ-1] = 0;
- e1000_proc_dev_setup(adapter);
- }
- break;
- }
- return NOTIFY_DONE;
- }
- static int
- e1000_suspend(struct pci_dev *pdev, uint32_t state)
- {
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t ctrl, ctrl_ext, rctl, manc;
- netif_device_detach(netdev);
- if(netif_running(netdev))
- e1000_down(adapter);
- if(adapter->wol) {
- e1000_setup_rctl(adapter);
- e1000_set_multi(netdev);
- /* turn on all-multi mode if wake on multicast is enabled */
- if(adapter->wol & E1000_WUFC_MC) {
- rctl = E1000_READ_REG(&adapter->hw, RCTL);
- rctl |= E1000_RCTL_MPE;
- E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
- }
- if(adapter->hw.mac_type >= e1000_82540) {
- ctrl = E1000_READ_REG(&adapter->hw, CTRL);
- /* advertise wake from D3Cold */
- #define E1000_CTRL_ADVD3WUC 0x00100000
- /* phy power management enable */
- #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
- ctrl |= E1000_CTRL_ADVD3WUC |
- E1000_CTRL_EN_PHY_PWR_MGMT;
- E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
- }
- if(adapter->hw.media_type == e1000_media_type_fiber) {
- /* keep the laser running in D3 */
- ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
- ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
- E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
- }
- E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
- E1000_WRITE_REG(&adapter->hw, WUFC, adapter->wol);
- pci_enable_wake(pdev, 3, 1);
- pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
- } else {
- E1000_WRITE_REG(&adapter->hw, WUC, 0);
- E1000_WRITE_REG(&adapter->hw, WUFC, 0);
- pci_enable_wake(pdev, 3, 0);
- pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
- }
- pci_save_state(pdev, adapter->pci_state);
- if(adapter->hw.mac_type >= e1000_82540) {
- 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);
- state = 0;
- }
- }
- state = (state > 0) ? 3 : 0;
- pci_set_power_state(pdev, state);
- return 0;
- }
- #ifdef CONFIG_PM
- static int
- e1000_resume(struct pci_dev *pdev)
- {
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev->priv;
- uint32_t manc;
- pci_set_power_state(pdev, 0);
- pci_restore_state(pdev, adapter->pci_state);
- pci_enable_wake(pdev, 3, 0);
- pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
- e1000_reset(adapter);
- E1000_WRITE_REG(&adapter->hw, WUS, ~0);
- if(netif_running(netdev))
- e1000_up(adapter);
- netif_device_attach(netdev);
- if(adapter->hw.mac_type >= e1000_82540) {
- manc = E1000_READ_REG(&adapter->hw, MANC);
- manc &= ~(E1000_MANC_ARP_EN);
- E1000_WRITE_REG(&adapter->hw, MANC, manc);
- }
- return 0;
- }
- #endif
- /* e1000_main.c */