diff options
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 3162 |
1 files changed, 3162 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c new file mode 100644 index 00000000000..82549a6fcfb --- /dev/null +++ b/drivers/net/e1000/e1000_main.c @@ -0,0 +1,3162 @@ +/******************************************************************************* + + + Copyright(c) 1999 - 2004 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 + +*******************************************************************************/ + +#include "e1000.h" + +/* Change Log + * 5.3.12 6/7/04 + * - kcompat NETIF_MSG for older kernels (2.4.9) <sean.p.mcdermott@intel.com> + * - if_mii support and associated kcompat for older kernels + * - More errlogging support from Jon Mason <jonmason@us.ibm.com> + * - Fix TSO issues on PPC64 machines -- Jon Mason <jonmason@us.ibm.com> + * + * 5.7.1 12/16/04 + * - Resurrect 82547EI/GI related fix in e1000_intr to avoid deadlocks. This + * fix was removed as it caused system instability. The suspected cause of + * this is the called to e1000_irq_disable in e1000_intr. Inlined the + * required piece of e1000_irq_disable into e1000_intr - Anton Blanchard + * 5.7.0 12/10/04 + * - include fix to the condition that determines when to quit NAPI - Robert Olsson + * - use netif_poll_{disable/enable} to synchronize between NAPI and i/f up/down + * 5.6.5 11/01/04 + * - Enabling NETIF_F_SG without checksum offload is illegal - + John Mason <jdmason@us.ibm.com> + * 5.6.3 10/26/04 + * - Remove redundant initialization - Jamal Hadi + * - Reset buffer_info->dma in tx resource cleanup logic + * 5.6.2 10/12/04 + * - Avoid filling tx_ring completely - shemminger@osdl.org + * - Replace schedule_timeout() with msleep()/msleep_interruptible() - + * nacc@us.ibm.com + * - Sparse cleanup - shemminger@osdl.org + * - Fix tx resource cleanup logic + * - LLTX support - ak@suse.de and hadi@cyberus.ca + */ + +char e1000_driver_name[] = "e1000"; +char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; +#ifndef CONFIG_E1000_NAPI +#define DRIVERNAPI +#else +#define DRIVERNAPI "-NAPI" +#endif +#define DRV_VERSION "5.7.6-k2"DRIVERNAPI +char e1000_driver_version[] = DRV_VERSION; +char e1000_copyright[] = "Copyright (c) 1999-2004 Intel Corporation."; + +/* e1000_pci_tbl - PCI Device ID Table + * + * Last entry must be all 0s + * + * Macro expands to... + * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} + */ +static struct pci_device_id e1000_pci_tbl[] = { + INTEL_E1000_ETHERNET_DEVICE(0x1000), + INTEL_E1000_ETHERNET_DEVICE(0x1001), + INTEL_E1000_ETHERNET_DEVICE(0x1004), + INTEL_E1000_ETHERNET_DEVICE(0x1008), + INTEL_E1000_ETHERNET_DEVICE(0x1009), + INTEL_E1000_ETHERNET_DEVICE(0x100C), + INTEL_E1000_ETHERNET_DEVICE(0x100D), + INTEL_E1000_ETHERNET_DEVICE(0x100E), + INTEL_E1000_ETHERNET_DEVICE(0x100F), + INTEL_E1000_ETHERNET_DEVICE(0x1010), + INTEL_E1000_ETHERNET_DEVICE(0x1011), + INTEL_E1000_ETHERNET_DEVICE(0x1012), + INTEL_E1000_ETHERNET_DEVICE(0x1013), + INTEL_E1000_ETHERNET_DEVICE(0x1014), + INTEL_E1000_ETHERNET_DEVICE(0x1015), + INTEL_E1000_ETHERNET_DEVICE(0x1016), + INTEL_E1000_ETHERNET_DEVICE(0x1017), + INTEL_E1000_ETHERNET_DEVICE(0x1018), + INTEL_E1000_ETHERNET_DEVICE(0x1019), + INTEL_E1000_ETHERNET_DEVICE(0x101D), + INTEL_E1000_ETHERNET_DEVICE(0x101E), + INTEL_E1000_ETHERNET_DEVICE(0x1026), + INTEL_E1000_ETHERNET_DEVICE(0x1027), + INTEL_E1000_ETHERNET_DEVICE(0x1028), + INTEL_E1000_ETHERNET_DEVICE(0x1075), + INTEL_E1000_ETHERNET_DEVICE(0x1076), + INTEL_E1000_ETHERNET_DEVICE(0x1077), + INTEL_E1000_ETHERNET_DEVICE(0x1078), + INTEL_E1000_ETHERNET_DEVICE(0x1079), + INTEL_E1000_ETHERNET_DEVICE(0x107A), + INTEL_E1000_ETHERNET_DEVICE(0x107B), + INTEL_E1000_ETHERNET_DEVICE(0x107C), + INTEL_E1000_ETHERNET_DEVICE(0x108A), + /* required last entry */ + {0,} +}; + +MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); + +int e1000_up(struct e1000_adapter *adapter); +void e1000_down(struct e1000_adapter *adapter); +void e1000_reset(struct e1000_adapter *adapter); +int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); +int e1000_setup_tx_resources(struct e1000_adapter *adapter); +int e1000_setup_rx_resources(struct e1000_adapter *adapter); +void e1000_free_tx_resources(struct e1000_adapter *adapter); +void e1000_free_rx_resources(struct e1000_adapter *adapter); +void e1000_update_stats(struct e1000_adapter *adapter); + +/* Local Function Prototypes */ + +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 __devexit 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 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_set_multi(struct net_device *netdev); +static void e1000_update_phy_info(unsigned long data); +static void e1000_watchdog(unsigned long data); +static void e1000_watchdog_task(struct e1000_adapter *adapter); +static void e1000_82547_tx_fifo_stall(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 irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); +static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter); +#ifdef CONFIG_E1000_NAPI +static int e1000_clean(struct net_device *netdev, int *budget); +static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, + int *work_done, int work_to_do); +#else +static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter); +#endif +static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter); +static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); +static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, + int cmd); +void e1000_set_ethtool_ops(struct net_device *netdev); +static void e1000_enter_82542_rst(struct e1000_adapter *adapter); +static void e1000_leave_82542_rst(struct e1000_adapter *adapter); +static void e1000_tx_timeout(struct net_device *dev); +static void e1000_tx_timeout_task(struct net_device *dev); +static void e1000_smartspeed(struct e1000_adapter *adapter); +static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, + struct sk_buff *skb); + +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 void e1000_restore_vlan(struct e1000_adapter *adapter); + +static int e1000_notify_reboot(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 + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* for netdump / net console */ +static void e1000_netpoll (struct net_device *netdev); +#endif + +struct notifier_block e1000_notifier_reboot = { + .notifier_call = e1000_notify_reboot, + .next = NULL, + .priority = 0 +}; + +/* Exported from other modules */ + +extern void e1000_check_options(struct e1000_adapter *adapter); + +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"); +MODULE_VERSION(DRV_VERSION); + +static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); + +/** + * 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 %s\n", + e1000_driver_string, e1000_driver_version); + + printk(KERN_INFO "%s\n", e1000_copyright); + + ret = pci_module_init(&e1000_driver); + if(ret >= 0) { + register_reboot_notifier(&e1000_notifier_reboot); + } + 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); + pci_unregister_driver(&e1000_driver); +} + +module_exit(e1000_exit_module); + +/** + * 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(adapter->pdev->irq); +} + +/** + * e1000_irq_enable - Enable default interrupt generation settings + * @adapter: board private structure + **/ + +static inline void +e1000_irq_enable(struct e1000_adapter *adapter) +{ + if(likely(atomic_dec_and_test(&adapter->irq_sem))) { + E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); + E1000_WRITE_FLUSH(&adapter->hw); + } +} + +int +e1000_up(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int err; + + /* hardware has been reset, we need to reload some things */ + + /* Reset the PHY if it was previously powered down */ + if(adapter->hw.media_type == e1000_media_type_copper) { + uint16_t mii_reg; + e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); + if(mii_reg & MII_CR_POWER_DOWN) + e1000_phy_reset(&adapter->hw); + } + + e1000_set_multi(netdev); + + e1000_restore_vlan(adapter); + + e1000_configure_tx(adapter); + e1000_setup_rctl(adapter); + e1000_configure_rx(adapter); + e1000_alloc_rx_buffers(adapter); + + if((err = request_irq(adapter->pdev->irq, &e1000_intr, + SA_SHIRQ | SA_SAMPLE_RANDOM, + netdev->name, netdev))) + return err; + + mod_timer(&adapter->watchdog_timer, jiffies); + e1000_irq_enable(adapter); + +#ifdef CONFIG_E1000_NAPI + netif_poll_enable(netdev); +#endif + return 0; +} + +void +e1000_down(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + e1000_irq_disable(adapter); + free_irq(adapter->pdev->irq, netdev); + del_timer_sync(&adapter->tx_fifo_stall_timer); + del_timer_sync(&adapter->watchdog_timer); + del_timer_sync(&adapter->phy_info_timer); + +#ifdef CONFIG_E1000_NAPI + netif_poll_disable(netdev); +#endif + 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); + + /* If WoL is not enabled + * Power down the PHY so no link is implied when interface is down */ + if(!adapter->wol && adapter->hw.media_type == e1000_media_type_copper) { + uint16_t mii_reg; + e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); + mii_reg |= MII_CR_POWER_DOWN; + e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); + } +} + +void +e1000_reset(struct e1000_adapter *adapter) +{ + uint32_t pba; + + /* Repartition Pba for greater than 9k mtu + * To take effect CTRL.RST is required. + */ + + if(adapter->hw.mac_type < e1000_82547) { + if(adapter->rx_buffer_len > E1000_RXBUFFER_8192) + pba = E1000_PBA_40K; + else + pba = E1000_PBA_48K; + } else { + if(adapter->rx_buffer_len > E1000_RXBUFFER_8192) + pba = E1000_PBA_22K; + else + pba = E1000_PBA_30K; + 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) - + E1000_FC_HIGH_DIFF; + adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - + E1000_FC_LOW_DIFF; + adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; + adapter->hw.fc_send_xon = 1; + 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); + if(e1000_init_hw(&adapter->hw)) + DPRINTK(PROBE, ERR, "Hardware Error\n"); + + /* 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); +} + +/** + * 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; + int err; + 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; + 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(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; +#endif + if(pci_using_dac) + netdev->features |= NETIF_F_HIGHDMA; + + /* hard_start_xmit is safe against parallel locking */ + netdev->features |= NETIF_F_LLTX; + + /* 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); + + if(!is_valid_ether_addr(netdev->dev_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); + + 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; + uint32_t manc; + + 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); + } + } + + unregister_netdev(netdev); + + e1000_phy_hw_reset(&adapter->hw); + + iounmap(adapter->hw.hw_addr); + pci_release_regions(pdev); + + 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; + + /* 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)) { + DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); + return -EIO; + } + + /* initialize eeprom parameters */ + + e1000_init_eeprom_params(hw); + + 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; + } + + atomic_set(&adapter->irq_sem, 1); + spin_lock_init(&adapter->stats_lock); + spin_lock_init(&adapter->tx_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; + int err; + + /* allocate transmit descriptors */ + + if((err = e1000_setup_tx_resources(adapter))) + goto err_setup_tx; + + /* allocate receive descriptors */ + + if((err = e1000_setup_rx_resources(adapter))) + goto err_setup_rx; + + if((err = e1000_up(adapter))) + goto err_up; + + return E1000_SUCCESS; + +err_up: + e1000_free_rx_resources(adapter); +err_setup_rx: + e1000_free_tx_resources(adapter); +err_setup_tx: + e1000_reset(adapter); + + return err; +} + +/** + * 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_check_64k_bound - check that memory doesn't cross 64kB boundary + * @adapter: address of board private structure + * @begin: address of beginning of memory + * @end: address of end of memory + **/ +static inline boolean_t +e1000_check_64k_bound(struct e1000_adapter *adapter, + void *start, unsigned long len) +{ + unsigned long begin = (unsigned long) start; + unsigned long end = begin + len; + + /* first rev 82545 and 82546 need to not allow any memory + * write location to cross a 64k boundary due to errata 23 */ + if (adapter->hw.mac_type == e1000_82545 || + adapter->hw.mac_type == e1000_82546 ) { + + /* check buffer doesn't cross 64kB */ + return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; + } + + return TRUE; +} + +/** + * e1000_setup_tx_resources - allocate Tx resources (Descriptors) + * @adapter: board private structure + * + * Return 0 on success, negative on failure + **/ + +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 = vmalloc(size); + if(!txdr->buffer_info) { + DPRINTK(PROBE, ERR, + "Unable to Allocate Memory for the Transmit descriptor ring\n"); + 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) { +setup_tx_desc_die: + DPRINTK(PROBE, ERR, + "Unable to Allocate Memory for the Transmit descriptor ring\n"); + vfree(txdr->buffer_info); + return -ENOMEM; + } + + /* fix for errata 23, cant cross 64kB boundary */ + if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { + void *olddesc = txdr->desc; + dma_addr_t olddma = txdr->dma; + DPRINTK(TX_ERR,ERR,"txdr align check failed: %u bytes at %p\n", + txdr->size, txdr->desc); + /* try again, without freeing the previous */ + txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); + /* failed allocation, critial failure */ + if(!txdr->desc) { + pci_free_consistent(pdev, txdr->size, olddesc, olddma); + goto setup_tx_desc_die; + } + + if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { + /* give up */ + pci_free_consistent(pdev, txdr->size, + txdr->desc, txdr->dma); + pci_free_consistent(pdev, txdr->size, olddesc, olddma); + DPRINTK(PROBE, ERR, + "Unable to Allocate aligned Memory for the Transmit" + " descriptor ring\n"); + vfree(txdr->buffer_info); + return -ENOMEM; + } else { + /* free old, move on with the new one since its okay */ + pci_free_consistent(pdev, txdr->size, olddesc, olddma); + } + } + 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 || + adapter->hw.media_type == e1000_media_type_internal_serdes) + 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 eop descriptor */ + adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | + E1000_TXD_CMD_IFCS; + + if(adapter->hw.mac_type < e1000_82543) + adapter->txd_cmd |= E1000_TXD_CMD_RPS; + else + adapter->txd_cmd |= E1000_TXD_CMD_RS; + + /* Cache if we're 82544 running in PCI-X because we'll + * need this to apply a workaround later in the send path. */ + if(adapter->hw.mac_type == e1000_82544 && + adapter->hw.bus_type == e1000_bus_type_pcix) + adapter->pcix_82544 = 1; +} + +/** + * e1000_setup_rx_resources - allocate Rx resources (Descriptors) + * @adapter: board private structure + * + * Returns 0 on success, negative on failure + **/ + +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 = vmalloc(size); + if(!rxdr->buffer_info) { + DPRINTK(PROBE, ERR, + "Unable to Allocate Memory for the Recieve descriptor ring\n"); + 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) { +setup_rx_desc_die: + DPRINTK(PROBE, ERR, + "Unble to Allocate Memory for the Recieve descriptor ring\n"); + vfree(rxdr->buffer_info); + return -ENOMEM; + } + + /* fix for errata 23, cant cross 64kB boundary */ + if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { + void *olddesc = rxdr->desc; + dma_addr_t olddma = rxdr->dma; + DPRINTK(RX_ERR,ERR, + "rxdr align check failed: %u bytes at %p\n", + rxdr->size, rxdr->desc); + /* try again, without freeing the previous */ + rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); + /* failed allocation, critial failure */ + if(!rxdr->desc) { + pci_free_consistent(pdev, rxdr->size, olddesc, olddma); + goto setup_rx_desc_die; + } + + if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { + /* give up */ + pci_free_consistent(pdev, rxdr->size, + rxdr->desc, rxdr->dma); + pci_free_consistent(pdev, rxdr->size, olddesc, olddma); + DPRINTK(PROBE, ERR, + "Unable to Allocate aligned Memory for the" + " Receive descriptor ring\n"); + vfree(rxdr->buffer_info); + return -ENOMEM; + } else { + /* free old, move on with the new one since its okay */ + pci_free_consistent(pdev, rxdr->size, olddesc, olddma); + } + } + 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; + + /* Setup buffer sizes */ + rctl &= ~(E1000_RCTL_SZ_4096); + rctl |= (E1000_RCTL_BSEX | E1000_RCTL_LPE); + 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; + break; + case E1000_RXBUFFER_8192: + rctl |= E1000_RCTL_SZ_8192; + break; + case E1000_RXBUFFER_16384: + rctl |= E1000_RCTL_SZ_16384; + 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; + + /* disable receives 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); + if(adapter->itr > 1) + E1000_WRITE_REG(&adapter->hw, ITR, + 1000000000 / (adapter->itr * 256)); + } + + /* 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 + **/ + +void +e1000_free_tx_resources(struct e1000_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + + e1000_clean_tx_ring(adapter); + + vfree(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; +} + +static inline void +e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, + struct e1000_buffer *buffer_info) +{ + struct pci_dev *pdev = adapter->pdev; + + if(buffer_info->dma) { + pci_unmap_page(pdev, + buffer_info->dma, + buffer_info->length, + PCI_DMA_TODEVICE); + buffer_info->dma = 0; + } + if(buffer_info->skb) { + dev_kfree_skb_any(buffer_info->skb); + buffer_info->skb = NULL; + } +} + +/** + * e1000_clean_tx_ring - Free Tx Buffers + * @adapter: board private structure + **/ + +static void +e1000_clean_tx_ring(struct e1000_adapter *adapter) +{ + struct e1000_desc_ring *tx_ring = &adapter->tx_ring; + struct e1000_buffer *buffer_info; + unsigned long size; + unsigned int i; + + /* Free all the Tx ring sk_buffs */ + + if (likely(adapter->previous_buffer_info.skb != NULL)) { + e1000_unmap_and_free_tx_resource(adapter, + &adapter->previous_buffer_info); + } + + for(i = 0; i < tx_ring->count; i++) { + buffer_info = &tx_ring->buffer_info[i]; + e1000_unmap_and_free_tx_resource(adapter, buffer_info); + } + + size = sizeof(struct e1000_buffer) * tx_ring->count; + memset(tx_ring->buffer_info, 0, size); + + /* Zero out the descriptor ring */ + + memset(tx_ring->desc, 0, tx_ring->size); + + tx_ring->next_to_use = 0; + 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 + **/ + +void +e1000_free_rx_resources(struct e1000_adapter *adapter) +{ + struct e1000_desc_ring *rx_ring = &adapter->rx_ring; + struct pci_dev *pdev = adapter->pdev; + + e1000_clean_rx_ring(adapter); + + vfree(rx_ring->buffer_info); + rx_ring->buffer_info = NULL; + + pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); + + 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 e1000_desc_ring *rx_ring = &adapter->rx_ring; + struct e1000_buffer *buffer_info; + struct pci_dev *pdev = adapter->pdev; + unsigned long size; + unsigned int i; + + /* Free all the Rx ring sk_buffs */ + + for(i = 0; i < rx_ring->count; i++) { + buffer_info = &rx_ring->buffer_info[i]; + if(buffer_info->skb) { + + pci_unmap_single(pdev, + buffer_info->dma, + buffer_info->length, + PCI_DMA_FROMDEVICE); + + dev_kfree_skb(buffer_info->skb); + buffer_info->skb = NULL; + } + } + + size = sizeof(struct e1000_buffer) * rx_ring->count; + memset(rx_ring->buffer_info, 0, size); + + /* Zero out the descriptor ring */ + + memset(rx_ring->desc, 0, rx_ring->size); + + rx_ring->next_to_clean = 0; + 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; + + if(!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + /* 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 + * responsible 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; + unsigned long flags; + + /* Check for Promiscuous and All Multicast modes */ + + spin_lock_irqsave(&adapter->tx_lock, flags); + + 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 14 multicast address into the exact filters 1-14 + * RAR 0 is used for the station MAC adddress + * if there are not 14 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); + + spin_unlock_irqrestore(&adapter->tx_lock, flags); +} + +/* 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_82547_tx_fifo_stall - Timer Call-back + * @data: pointer to adapter cast into an unsigned long + **/ + +static void +e1000_82547_tx_fifo_stall(unsigned long data) +{ + struct e1000_adapter *adapter = (struct e1000_adapter *) data; + struct net_device *netdev = adapter->netdev; + uint32_t tctl; + + if(atomic_read(&adapter->tx_fifo_stall)) { + if((E1000_READ_REG(&adapter->hw, TDT) == + E1000_READ_REG(&adapter->hw, TDH)) && + (E1000_READ_REG(&adapter->hw, TDFT) == + E1000_READ_REG(&adapter->hw, TDFH)) && + (E1000_READ_REG(&adapter->hw, TDFTS) == + E1000_READ_REG(&adapter->hw, TDFHS))) { + tctl = E1000_READ_REG(&adapter->hw, TCTL); + E1000_WRITE_REG(&adapter->hw, TCTL, + tctl & ~E1000_TCTL_EN); + E1000_WRITE_REG(&adapter->hw, TDFT, + adapter->tx_head_addr); + E1000_WRITE_REG(&adapter->hw, TDFH, + adapter->tx_head_addr); + E1000_WRITE_REG(&adapter->hw, TDFTS, + adapter->tx_head_addr); + E1000_WRITE_REG(&adapter->hw, TDFHS, + adapter->tx_head_addr); + E1000_WRITE_REG(&adapter->hw, TCTL, tctl); + E1000_WRITE_FLUSH(&adapter->hw); + + adapter->tx_fifo_head = 0; + atomic_set(&adapter->tx_fifo_stall, 0); + netif_wake_queue(netdev); + } else { + mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); + } + } +} + +/** + * e1000_watchdog - Timer Call-back + * @data: pointer to adapter cast into an unsigned long + **/ +static void +e1000_watchdog(unsigned long data) +{ + struct e1000_adapter *adapter = (struct e1000_adapter *) data; + + /* Do the rest outside of interrupt context */ + schedule_work(&adapter->watchdog_task); +} + +static void +e1000_watchdog_task(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct e1000_desc_ring *txdr = &adapter->tx_ring; + uint32_t link; + + e1000_check_for_link(&adapter->hw); + + if((adapter->hw.media_type == e1000_media_type_internal_serdes) && + !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) + link = !adapter->hw.serdes_link_down; + else + link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; + + if(link) { + if(!netif_carrier_ok(netdev)) { + e1000_get_speed_and_duplex(&adapter->hw, + &adapter->link_speed, + &adapter->link_duplex); + + DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", + 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); + adapter->smartspeed = 0; + } + } else { + if(netif_carrier_ok(netdev)) { + adapter->link_speed = 0; + adapter->link_duplex = 0; + DPRINTK(LINK, INFO, "NIC Link is Down\n"); + netif_carrier_off(netdev); + netif_stop_queue(netdev); + mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); + } + + e1000_smartspeed(adapter); + } + + e1000_update_stats(adapter); + + adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; + adapter->tpt_old = adapter->stats.tpt; + adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; + adapter->colc_old = adapter->stats.colc; + + adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; + adapter->gorcl_old = adapter->stats.gorcl; + adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; + adapter->gotcl_old = adapter->stats.gotcl; + + e1000_update_adaptive(&adapter->hw); + + if(!netif_carrier_ok(netdev)) { + if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { + /* We've lost link, so the controller stops DMA, + * but we've got queued Tx work that's never going + * to get done, so reset controller to flush Tx. + * (Do the reset outside of interrupt context). */ + schedule_work(&adapter->tx_timeout_task); + } + } + + /* Dynamic mode for Interrupt Throttle Rate (ITR) */ + if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { + /* Symmetric Tx/Rx gets a reduced ITR=2000; Total + * asymmetrical Tx or Rx gets ITR=8000; everyone + * else is between 2000-8000. */ + uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; + uint32_t dif = (adapter->gotcl > adapter->gorcl ? + adapter->gotcl - adapter->gorcl : + adapter->gorcl - adapter->gotcl) / 10000; + uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; + E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); + } + + /* Cause software interrupt to ensure rx ring is cleaned */ + E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); + + /* Force detection of hung controller every watchdog period*/ + adapter->detect_tx_hung = TRUE; + + /* 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_TSO 0x00000004 +#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 +#define E1000_TX_FLAGS_VLAN_SHIFT 16 + +static inline int +e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb) +{ +#ifdef NETIF_F_TSO + struct e1000_context_desc *context_desc; + unsigned int i; + uint32_t cmd_length = 0; + uint16_t ipcse, tucse, mss; + uint8_t ipcss, ipcso, tucss, tucso, hdr_len; + int err; + + if(skb_shinfo(skb)->tso_size) { + if (skb_header_cloned(skb)) { + err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); + if (err) + return err; + } + + hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); + mss = skb_shinfo(skb)->tso_size; + skb->nh.iph->tot_len = 0; + skb->nh.iph->check = 0; + skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr, + skb->nh.iph->daddr, + 0, + IPPROTO_TCP, + 0); + ipcss = skb->nh.raw - skb->data; + ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; + ipcse = skb->h.raw - skb->data - 1; + tucss = skb->h.raw - skb->data; + tucso = (void *)&(skb->h.th->check) - (void *)skb->data; + tucse = 0; + + cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | + E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP | + (skb->len - (hdr_len))); + + i = adapter->tx_ring.next_to_use; + context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); + + context_desc->lower_setup.ip_fields.ipcss = ipcss; + context_desc->lower_setup.ip_fields.ipcso = ipcso; + context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); + context_desc->upper_setup.tcp_fields.tucss = tucss; + context_desc->upper_setup.tcp_fields.tucso = tucso; + context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); + context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); + context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; + context_desc->cmd_and_length = cpu_to_le32(cmd_length); + + if(++i == adapter->tx_ring.count) i = 0; + adapter->tx_ring.next_to_use = i; + + return 1; + } +#endif + + return 0; +} + +static inline boolean_t +e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) +{ + struct e1000_context_desc *context_desc; + unsigned int i; + uint8_t css; + + if(likely(skb->ip_summed == CHECKSUM_HW)) { + css = skb->h.raw - 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 = css + skb->csum; + context_desc->upper_setup.tcp_fields.tucse = 0; + context_desc->tcp_seg_setup.data = 0; + context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); + + if(unlikely(++i == adapter->tx_ring.count)) i = 0; + adapter->tx_ring.next_to_use = i; + + return TRUE; + } + + return FALSE; +} + +#define E1000_MAX_TXD_PWR 12 +#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) + +static inline int +e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb, + unsigned int first, unsigned int max_per_txd, + unsigned int nr_frags, unsigned int mss) +{ + struct e1000_desc_ring *tx_ring = &adapter->tx_ring; + struct e1000_buffer *buffer_info; + unsigned int len = skb->len; + unsigned int offset = 0, size, count = 0, i; + unsigned int f; + len -= skb->data_len; + + i = tx_ring->next_to_use; + + while(len) { + buffer_info = &tx_ring->buffer_info[i]; + size = min(len, max_per_txd); +#ifdef NETIF_F_TSO + /* Workaround for premature desc write-backs + * in TSO mode. Append 4-byte sentinel desc */ + if(unlikely(mss && !nr_frags && size == len && size > 8)) + size -= 4; +#endif + /* Workaround for potential 82544 hang in PCI-X. Avoid + * terminating buffers within evenly-aligned dwords. */ + if(unlikely(adapter->pcix_82544 && + !((unsigned long)(skb->data + offset + size - 1) & 4) && + size > 4)) + size -= 4; + + buffer_info->length = size; + buffer_info->dma = + pci_map_single(adapter->pdev, + skb->data + offset, + size, + PCI_DMA_TODEVICE); + buffer_info->time_stamp = jiffies; + + len -= size; + offset += size; + count++; + if(unlikely(++i == tx_ring->count)) i = 0; + } + + for(f = 0; f < nr_frags; f++) { + struct skb_frag_struct *frag; + + frag = &skb_shinfo(skb)->frags[f]; + len = frag->size; + offset = frag->page_offset; + + while(len) { + buffer_info = &tx_ring->buffer_info[i]; + size = min(len, max_per_txd); +#ifdef NETIF_F_TSO + /* Workaround for premature desc write-backs + * in TSO mode. Append 4-byte sentinel desc */ + if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) + size -= 4; +#endif + /* Workaround for potential 82544 hang in PCI-X. + * Avoid terminating buffers within evenly-aligned + * dwords. */ + if(unlikely(adapter->pcix_82544 && + !((unsigned long)(frag->page+offset+size-1) & 4) && + size > 4)) + size -= 4; + + buffer_info->length = size; + buffer_info->dma = + pci_map_page(adapter->pdev, + frag->page, + offset, + size, + PCI_DMA_TODEVICE); + buffer_info->time_stamp = jiffies; + + len -= size; + offset += size; + count++; + if(unlikely(++i == tx_ring->count)) i = 0; + } + } + + i = (i == 0) ? tx_ring->count - 1 : i - 1; + tx_ring->buffer_info[i].skb = skb; + tx_ring->buffer_info[first].next_to_watch = i; + + 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; + struct e1000_buffer *buffer_info; + uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; + unsigned int i; + + if(likely(tx_flags & E1000_TX_FLAGS_TSO)) { + txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | + E1000_TXD_CMD_TSE; + txd_upper |= (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8; + } + + if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) { + txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; + txd_upper |= E1000_TXD_POPTS_TXSM << 8; + } + + if(unlikely(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--) { + buffer_info = &tx_ring->buffer_info[i]; + tx_desc = E1000_TX_DESC(*tx_ring, i); + tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); + tx_desc->lower.data = + cpu_to_le32(txd_lower | buffer_info->length); + tx_desc->upper.data = cpu_to_le32(txd_upper); + if(unlikely(++i == tx_ring->count)) i = 0; + } + + tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); + + /* 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); +} + +/** + * 82547 workaround to avoid controller hang in half-duplex environment. + * The workaround is to avoid queuing a large packet that would span + * the internal Tx FIFO ring boundary by notifying the stack to resend + * the packet at a later time. This gives the Tx FIFO an opportunity to + * flush all packets. When that occurs, we reset the Tx FIFO pointers + * to the beginning of the Tx FIFO. + **/ + +#define E1000_FIFO_HDR 0x10 +#define E1000_82547_PAD_LEN 0x3E0 + +static inline int +e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) +{ + uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; + uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; + + E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); + + if(adapter->link_duplex != HALF_DUPLEX) + goto no_fifo_stall_required; + + if(atomic_read(&adapter->tx_fifo_stall)) + return 1; + + if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { + atomic_set(&adapter->tx_fifo_stall, 1); + return 1; + } + +no_fifo_stall_required: + adapter->tx_fifo_head += skb_fifo_len; + if(adapter->tx_fifo_head >= adapter->tx_fifo_size) + adapter->tx_fifo_head -= adapter->tx_fifo_size; + return 0; +} + +#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) +static int +e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev->priv; + unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; + unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; + unsigned int tx_flags = 0; + unsigned int len = skb->len; + unsigned long flags; + unsigned int nr_frags = 0; + unsigned int mss = 0; + int count = 0; + int tso; + unsigned int f; + len -= skb->data_len; + + if(unlikely(skb->len <= 0)) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + +#ifdef NETIF_F_TSO + mss = skb_shinfo(skb)->tso_size; + /* The controller does a simple calculation to + * make sure there is enough room in the FIFO before + * initiating the DMA for each buffer. The calc is: + * 4 = ceil(buffer len/mss). To make sure we don't + * overrun the FIFO, adjust the max buffer len if mss + * drops. */ + if(mss) { + max_per_txd = min(mss << 2, max_per_txd); + max_txd_pwr = fls(max_per_txd) - 1; + } + + if((mss) || (skb->ip_summed == CHECKSUM_HW)) + count++; + count++; /* for sentinel desc */ +#else + if(skb->ip_summed == CHECKSUM_HW) + count++; +#endif + count += TXD_USE_COUNT(len, max_txd_pwr); + + if(adapter->pcix_82544) + count++; + + nr_frags = skb_shinfo(skb)->nr_frags; + for(f = 0; f < nr_frags; f++) + count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, + max_txd_pwr); + if(adapter->pcix_82544) + count += nr_frags; + + local_irq_save(flags); + if (!spin_trylock(&adapter->tx_lock)) { + /* Collision - tell upper layer to requeue */ + local_irq_restore(flags); + return NETDEV_TX_LOCKED; + } + + /* need: count + 2 desc gap to keep tail from touching + * head, otherwise try next time */ + if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2)) { + netif_stop_queue(netdev); + spin_unlock_irqrestore(&adapter->tx_lock, flags); + return NETDEV_TX_BUSY; + } + + if(unlikely(adapter->hw.mac_type == e1000_82547)) { + if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { + netif_stop_queue(netdev); + mod_timer(&adapter->tx_fifo_stall_timer, jiffies); + spin_unlock_irqrestore(&adapter->tx_lock, flags); + return NETDEV_TX_BUSY; + } + } + + if(unlikely(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); + } + + first = adapter->tx_ring.next_to_use; + + tso = e1000_tso(adapter, skb); + if (tso < 0) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + + if (likely(tso)) + tx_flags |= E1000_TX_FLAGS_TSO; + else if(likely(e1000_tx_csum(adapter, skb))) + tx_flags |= E1000_TX_FLAGS_CSUM; + + e1000_tx_queue(adapter, + e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss), + tx_flags); + + netdev->trans_start = jiffies; + + /* Make sure there is space in the ring for the next send. */ + if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2)) + netif_stop_queue(netdev); + + spin_unlock_irqrestore(&adapter->tx_lock, flags); + return NETDEV_TX_OK; +} + +/** + * 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_work(&adapter->tx_timeout_task); +} + +static void +e1000_tx_timeout_task(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev->priv; + + e1000_down(adapter); + e1000_up(adapter); +} + +/** + * 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; + + e1000_update_stats(adapter); + 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)) { + DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); + return -EINVAL; + } + + if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) { + adapter->rx_buffer_len = E1000_RXBUFFER_2048; + + } else if(adapter->hw.mac_type < e1000_82543) { + DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n"); + 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 + **/ + +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); + + 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) && + (hw->phy_type == e1000_phy_m88) && + !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) + adapter->phy_stats.receive_errors += phy_tmp; + } + + spin_unlock_irqrestore(&adapter->stats_lock, flags); +} + +/** + * e1000_intr - Interrupt Handler + * @irq: interrupt number + * @data: pointer to a network interface device structure + * @pt_regs: CPU registers structure + **/ + +static irqreturn_t +e1000_intr(int irq, void *data, struct pt_regs *regs) +{ + struct net_device *netdev = data; + struct e1000_adapter *adapter = netdev->priv; + struct e1000_hw *hw = &adapter->hw; + uint32_t icr = E1000_READ_REG(hw, ICR); +#ifndef CONFIG_E1000_NAPI + unsigned int i; +#endif + + if(unlikely(!icr)) + return IRQ_NONE; /* Not our interrupt */ + + if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { + hw->get_link_status = 1; + mod_timer(&adapter->watchdog_timer, jiffies); + } + +#ifdef CONFIG_E1000_NAPI + if(likely(netif_rx_schedule_prep(netdev))) { + + /* Disable interrupts and register for poll. The flush + of the posted write is intentionally left out. + */ + + atomic_inc(&adapter->irq_sem); + E1000_WRITE_REG(hw, IMC, ~0); + __netif_rx_schedule(netdev); + } +#else + /* Writing IMC and IMS is needed for 82547. + Due to Hub Link bus being occupied, an interrupt + de-assertion message is not able to be sent. + When an interrupt assertion message is generated later, + two messages are re-ordered and sent out. + That causes APIC to think 82547 is in de-assertion + state, while 82547 is in assertion state, resulting + in dead lock. Writing IMC forces 82547 into + de-assertion state. + */ + if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){ + atomic_inc(&adapter->irq_sem); + E1000_WRITE_REG(&adapter->hw, IMC, ~0); + } + + for(i = 0; i < E1000_MAX_INTR; i++) + if(unlikely(!e1000_clean_rx_irq(adapter) & + !e1000_clean_tx_irq(adapter))) + break; + + if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) + e1000_irq_enable(adapter); +#endif + + return IRQ_HANDLED; +} + +#ifdef CONFIG_E1000_NAPI +/** + * e1000_clean - NAPI Rx polling callback + * @adapter: board private structure + **/ + +static int +e1000_clean(struct net_device *netdev, int *budget) +{ + struct e1000_adapter *adapter = netdev->priv; + int work_to_do = min(*budget, netdev->quota); + int tx_cleaned; + int work_done = 0; + + tx_cleaned = e1000_clean_tx_irq(adapter); + e1000_clean_rx_irq(adapter, &work_done, work_to_do); + + *budget -= work_done; + netdev->quota -= work_done; + + /* if no Tx and not enough Rx work done, exit the polling mode */ + if((!tx_cleaned && (work_done < work_to_do)) || + !netif_running(netdev)) { + netif_rx_complete(netdev); + e1000_irq_enable(adapter); + return 0; + } + + return 1; +} + +#endif +/** + * e1000_clean_tx_irq - Reclaim resources after transmit completes + * @adapter: board private structure + **/ + +static boolean_t +e1000_clean_tx_irq(struct e1000_adapter *adapter) +{ + struct e1000_desc_ring *tx_ring = &adapter->tx_ring; + struct net_device *netdev = adapter->netdev; + struct e1000_tx_desc *tx_desc, *eop_desc; + struct e1000_buffer *buffer_info; + unsigned int i, eop; + boolean_t cleaned = FALSE; + + i = tx_ring->next_to_clean; + eop = tx_ring->buffer_info[i].next_to_watch; + eop_desc = E1000_TX_DESC(*tx_ring, eop); + + while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { + /* pre-mature writeback of Tx descriptors */ + /* clear (free buffers and unmap pci_mapping) */ + /* previous_buffer_info */ + if (likely(adapter->previous_buffer_info.skb != NULL)) { + e1000_unmap_and_free_tx_resource(adapter, + &adapter->previous_buffer_info); + } + + for(cleaned = FALSE; !cleaned; ) { + tx_desc = E1000_TX_DESC(*tx_ring, i); + buffer_info = &tx_ring->buffer_info[i]; + cleaned = (i == eop); + + /* pre-mature writeback of Tx descriptors */ + /* save the cleaning of the this for the */ + /* next iteration */ + if (cleaned) { + memcpy(&adapter->previous_buffer_info, + buffer_info, + sizeof(struct e1000_buffer)); + memset(buffer_info, + 0, + sizeof(struct e1000_buffer)); + } else { + e1000_unmap_and_free_tx_resource(adapter, + buffer_info); + } + + tx_desc->buffer_addr = 0; + tx_desc->lower.data = 0; + tx_desc->upper.data = 0; + + cleaned = (i == eop); + if(unlikely(++i == tx_ring->count)) i = 0; + } + + eop = tx_ring->buffer_info[i].next_to_watch; + eop_desc = E1000_TX_DESC(*tx_ring, eop); + } + + tx_ring->next_to_clean = i; + + spin_lock(&adapter->tx_lock); + + if(unlikely(cleaned && netif_queue_stopped(netdev) && + netif_carrier_ok(netdev))) + netif_wake_queue(netdev); + + spin_unlock(&adapter->tx_lock); + + if(adapter->detect_tx_hung) { + /* detect a transmit hang in hardware, this serializes the + * check with the clearing of time_stamp and movement of i */ + adapter->detect_tx_hung = FALSE; + if(tx_ring->buffer_info[i].dma && + time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) && + !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF)) + netif_stop_queue(netdev); + } + + return cleaned; +} + +/** + * 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(unlikely((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++; + } +} + +/** + * e1000_clean_rx_irq - Send received data up the network stack + * @adapter: board private structure + **/ + +static boolean_t +#ifdef CONFIG_E1000_NAPI +e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done, + int work_to_do) +#else +e1000_clean_rx_irq(struct e1000_adapter *adapter) +#endif +{ + 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 e1000_buffer *buffer_info; + struct sk_buff *skb; + unsigned long flags; + uint32_t length; + uint8_t last_byte; + unsigned int i; + boolean_t cleaned = FALSE; + + i = rx_ring->next_to_clean; + rx_desc = E1000_RX_DESC(*rx_ring, i); + + while(rx_desc->status & E1000_RXD_STAT_DD) { + buffer_info = &rx_ring->buffer_info[i]; +#ifdef CONFIG_E1000_NAPI + if(*work_done >= work_to_do) + break; + (*work_done)++; +#endif + cleaned = TRUE; + + pci_unmap_single(pdev, + buffer_info->dma, + buffer_info->length, + PCI_DMA_FROMDEVICE); + + skb = buffer_info->skb; + length = le16_to_cpu(rx_desc->length); + + if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) { + /* All receives must fit into a single buffer */ + E1000_DBG("%s: Receive packet consumed multiple" + " buffers\n", netdev->name); + dev_kfree_skb_irq(skb); + goto next_desc; + } + + if(unlikely(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); + goto next_desc; + } + } + + /* 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); +#ifdef CONFIG_E1000_NAPI + if(unlikely(adapter->vlgrp && + (rx_desc->status & E1000_RXD_STAT_VP))) { + vlan_hwaccel_receive_skb(skb, adapter->vlgrp, + le16_to_cpu(rx_desc->special) & + E1000_RXD_SPC_VLAN_MASK); + } else { + netif_receive_skb(skb); + } +#else /* CONFIG_E1000_NAPI */ + if(unlikely(adapter->vlgrp && + (rx_desc->status & E1000_RXD_STAT_VP))) { + vlan_hwaccel_rx(skb, adapter->vlgrp, + le16_to_cpu(rx_desc->special) & + E1000_RXD_SPC_VLAN_MASK); + } else { + netif_rx(skb); + } +#endif /* CONFIG_E1000_NAPI */ + netdev->last_rx = jiffies; + +next_desc: + rx_desc->status = 0; + buffer_info->skb = NULL; + if(unlikely(++i == rx_ring->count)) i = 0; + + rx_desc = E1000_RX_DESC(*rx_ring, i); + } + + rx_ring->next_to_clean = i; + + e1000_alloc_rx_buffers(adapter); + + return cleaned; +} + +/** + * e1000_alloc_rx_buffers - Replace used receive buffers + * @adapter: 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 e1000_buffer *buffer_info; + struct sk_buff *skb; + unsigned int i, bufsz; + + i = rx_ring->next_to_use; + buffer_info = &rx_ring->buffer_info[i]; + + while(!buffer_info->skb) { + bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; + + skb = dev_alloc_skb(bufsz); + if(unlikely(!skb)) { + /* Better luck next round */ + break; + } + + /* fix for errata 23, cant cross 64kB boundary */ + if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { + struct sk_buff *oldskb = skb; + DPRINTK(RX_ERR,ERR, + "skb align check failed: %u bytes at %p\n", + bufsz, skb->data); + /* try again, without freeing the previous */ + skb = dev_alloc_skb(bufsz); + if (!skb) { + dev_kfree_skb(oldskb); + break; + } + if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { + /* give up */ + dev_kfree_skb(skb); + dev_kfree_skb(oldskb); + break; /* while !buffer_info->skb */ + } else { + /* move on with the new one */ + dev_kfree_skb(oldskb); + } + } + + /* 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, NET_IP_ALIGN); + + skb->dev = netdev; + + buffer_info->skb = skb; + buffer_info->length = adapter->rx_buffer_len; + buffer_info->dma = pci_map_single(pdev, + skb->data, + adapter->rx_buffer_len, + PCI_DMA_FROMDEVICE); + + /* fix for errata 23, cant cross 64kB boundary */ + if(!e1000_check_64k_bound(adapter, + (void *)(unsigned long)buffer_info->dma, + adapter->rx_buffer_len)) { + DPRINTK(RX_ERR,ERR, + "dma align check failed: %u bytes at %ld\n", + adapter->rx_buffer_len, (unsigned long)buffer_info->dma); + + dev_kfree_skb(skb); + buffer_info->skb = NULL; + + pci_unmap_single(pdev, + buffer_info->dma, + adapter->rx_buffer_len, + PCI_DMA_FROMDEVICE); + + break; /* while !buffer_info->skb */ + } + + rx_desc = E1000_RX_DESC(*rx_ring, i); + rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); + + if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { + /* 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); + } + + if(unlikely(++i == rx_ring->count)) i = 0; + buffer_info = &rx_ring->buffer_info[i]; + } + + rx_ring->next_to_use = i; +} + +/** + * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. + * @adapter: + **/ + +static void +e1000_smartspeed(struct e1000_adapter *adapter) +{ + uint16_t phy_status; + uint16_t phy_ctrl; + + if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || + !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) + return; + + if(adapter->smartspeed == 0) { + /* If Master/Slave config fault is asserted twice, + * we assume back-to-back */ + e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); + if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; + e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); + if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; + e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); + if(phy_ctrl & CR_1000T_MS_ENABLE) { + phy_ctrl &= ~CR_1000T_MS_ENABLE; + e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, + phy_ctrl); + adapter->smartspeed++; + if(!e1000_phy_setup_autoneg(&adapter->hw) && + !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, + &phy_ctrl)) { + phy_ctrl |= (MII_CR_AUTO_NEG_EN | + MII_CR_RESTART_AUTO_NEG); + e1000_write_phy_reg(&adapter->hw, PHY_CTRL, + phy_ctrl); + } + } + return; + } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { + /* If still no link, perhaps using 2/3 pair cable */ + e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); + phy_ctrl |= CR_1000T_MS_ENABLE; + e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); + if(!e1000_phy_setup_autoneg(&adapter->hw) && + !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { + phy_ctrl |= (MII_CR_AUTO_NEG_EN | + MII_CR_RESTART_AUTO_NEG); + e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); + } + } + /* Restart process after E1000_SMARTSPEED_MAX iterations */ + if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX) + adapter->smartspeed = 0; +} + +/** + * e1000_ioctl - + * @netdev: + * @ifreq: + * @cmd: + **/ + +static int +e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + switch (cmd) { + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSMIIREG: + return e1000_mii_ioctl(netdev, ifr, cmd); + default: + return -EOPNOTSUPP; + } +} + +/** + * e1000_mii_ioctl - + * @netdev: + * @ifreq: + * @cmd: + **/ + +static int +e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + struct e1000_adapter *adapter = netdev->priv; + struct mii_ioctl_data *data = if_mii(ifr); + int retval; + uint16_t mii_reg; + uint16_t spddplx; + + if(adapter->hw.media_type != e1000_media_type_copper) + return -EOPNOTSUPP; + + switch (cmd) { + case SIOCGMIIPHY: + data->phy_id = adapter->hw.phy_addr; + break; + case SIOCGMIIREG: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, + &data->val_out)) + return -EIO; + break; + case SIOCSMIIREG: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data->reg_num & ~(0x1F)) + return -EFAULT; + mii_reg = data->val_in; + if (e1000_write_phy_reg(&adapter->hw, data->reg_num, + mii_reg)) + return -EIO; + if (adapter->hw.phy_type == e1000_phy_m88) { + switch (data->reg_num) { + case PHY_CTRL: + if(mii_reg & MII_CR_POWER_DOWN) + break; + if(mii_reg & MII_CR_AUTO_NEG_EN) { + adapter->hw.autoneg = 1; + adapter->hw.autoneg_advertised = 0x2F; + } else { + if (mii_reg & 0x40) + spddplx = SPEED_1000; + else if (mii_reg & 0x2000) + spddplx = SPEED_100; + else + spddplx = SPEED_10; + spddplx += (mii_reg & 0x100) + ? FULL_DUPLEX : + HALF_DUPLEX; + retval = e1000_set_spd_dplx(adapter, + spddplx); + if(retval) + return retval; + } + if(netif_running(adapter->netdev)) { + e1000_down(adapter); + e1000_up(adapter); + } else + e1000_reset(adapter); + break; + case M88E1000_PHY_SPEC_CTRL: + case M88E1000_EXT_PHY_SPEC_CTRL: + if (e1000_phy_reset(&adapter->hw)) + return -EIO; + break; + } + } else { + switch (data->reg_num) { + case PHY_CTRL: + if(mii_reg & MII_CR_POWER_DOWN) + break; + if(netif_running(adapter->netdev)) { + e1000_down(adapter); + e1000_up(adapter); + } else + e1000_reset(adapter); + break; + } + } + break; + default: + return -EOPNOTSUPP; + } + return E1000_SUCCESS; +} + +void +e1000_pci_set_mwi(struct e1000_hw *hw) +{ + struct e1000_adapter *adapter = hw->back; + + int ret; + ret = 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, unsigned long port) +{ + return inl(port); +} + +void +e1000_io_write(struct e1000_hw *hw, unsigned long 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 */ + 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 void +e1000_restore_vlan(struct e1000_adapter *adapter) +{ + e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); + + if(adapter->vlgrp) { + uint16_t vid; + for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { + if(!adapter->vlgrp->vlan_devices[vid]) + continue; + e1000_vlan_rx_add_vid(adapter->netdev, vid); + } + } +} + +int +e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) +{ + adapter->hw.autoneg = 0; + + switch(spddplx) { + case SPEED_10 + DUPLEX_HALF: + adapter->hw.forced_speed_duplex = e1000_10_half; + break; + case SPEED_10 + DUPLEX_FULL: + adapter->hw.forced_speed_duplex = e1000_10_full; + break; + case SPEED_100 + DUPLEX_HALF: + adapter->hw.forced_speed_duplex = e1000_100_half; + break; + case SPEED_100 + DUPLEX_FULL: + adapter->hw.forced_speed_duplex = e1000_100_full; + break; + case SPEED_1000 + DUPLEX_FULL: + adapter->hw.autoneg = 1; + adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; + break; + case SPEED_1000 + DUPLEX_HALF: /* not supported */ + default: + DPRINTK(PROBE, ERR, + "Unsupported Speed/Duplexity configuration\n"); + return -EINVAL; + } + return 0; +} + +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: + while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) { + if(pci_dev_driver(pdev) == &e1000_driver) + e1000_suspend(pdev, 3); + } + } + 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, status; + uint32_t wufc = adapter->wol; + + netif_device_detach(netdev); + + if(netif_running(netdev)) + e1000_down(adapter); + + status = E1000_READ_REG(&adapter->hw, STATUS); + if(status & E1000_STATUS_LU) + wufc &= ~E1000_WUFC_LNKC; + + if(wufc) { + 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 || + adapter->hw.media_type == e1000_media_type_internal_serdes) { + /* 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, wufc); + 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); + + 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); + pci_enable_wake(pdev, 3, 1); + pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ + } + } + + pci_disable_device(pdev); + + 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, ret; + + pci_set_power_state(pdev, 0); + pci_restore_state(pdev); + ret = pci_enable_device(pdev); + if (pdev->is_busmaster) + pci_set_master(pdev); + + 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 && + adapter->hw.media_type == e1000_media_type_copper) { + manc = E1000_READ_REG(&adapter->hw, MANC); + manc &= ~(E1000_MANC_ARP_EN); + E1000_WRITE_REG(&adapter->hw, MANC, manc); + } + + return 0; +} +#endif + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void +e1000_netpoll (struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev->priv; + disable_irq(adapter->pdev->irq); + e1000_intr(adapter->pdev->irq, netdev, NULL); + enable_irq(adapter->pdev->irq); +} +#endif + +/* e1000_main.c */ |