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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/e1000/e1000_main.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
-rw-r--r--drivers/net/e1000/e1000_main.c3162
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 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 09:24:42 +0000