--- a/devices/e1000/e1000_main-2.6.29-org.c Tue Apr 10 19:09:51 2012 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,4849 +0,0 @@
-/*******************************************************************************
-
- Intel PRO/1000 Linux driver
- Copyright(c) 1999 - 2006 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope 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.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#include "e1000.h"
-#include <net/ip6_checksum.h>
-
-char e1000_driver_name[] = "e1000";
-static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
-#define DRV_VERSION "7.3.21-k3-NAPI"
-const char e1000_driver_version[] = DRV_VERSION;
-static const char e1000_copyright[] = "Copyright (c) 1999-2006 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(0x101A),
- 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),
- INTEL_E1000_ETHERNET_DEVICE(0x1099),
- INTEL_E1000_ETHERNET_DEVICE(0x10B5),
- /* 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_reinit_locked(struct e1000_adapter *adapter);
-void e1000_reset(struct e1000_adapter *adapter);
-int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
-int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
-int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
-void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
-void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
-static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
- struct e1000_tx_ring *txdr);
-static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rxdr);
-static void e1000_free_tx_resources(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring);
-static void e1000_free_rx_resources(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring);
-void e1000_update_stats(struct e1000_adapter *adapter);
-
-static int e1000_init_module(void);
-static void e1000_exit_module(void);
-static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
-static void __devexit e1000_remove(struct pci_dev *pdev);
-static int e1000_alloc_queues(struct e1000_adapter *adapter);
-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_all_tx_rings(struct e1000_adapter *adapter);
-static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
-static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring);
-static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring);
-static void e1000_set_rx_mode(struct net_device *netdev);
-static void e1000_update_phy_info(unsigned long data);
-static void e1000_watchdog(unsigned long data);
-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);
-static irqreturn_t e1000_intr_msi(int irq, void *data);
-static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring);
-static int e1000_clean(struct napi_struct *napi, int budget);
-static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring,
- int *work_done, int work_to_do);
-static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring,
- int cleaned_count);
-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);
-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_reset_task(struct work_struct *work);
-static void e1000_smartspeed(struct e1000_adapter *adapter);
-static 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, u16 vid);
-static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
-static void e1000_restore_vlan(struct e1000_adapter *adapter);
-
-static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
-#ifdef CONFIG_PM
-static int e1000_resume(struct pci_dev *pdev);
-#endif
-static void e1000_shutdown(struct pci_dev *pdev);
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/* for netdump / net console */
-static void e1000_netpoll (struct net_device *netdev);
-#endif
-
-#define COPYBREAK_DEFAULT 256
-static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
-module_param(copybreak, uint, 0644);
-MODULE_PARM_DESC(copybreak,
- "Maximum size of packet that is copied to a new buffer on receive");
-
-static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state);
-static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
-static void e1000_io_resume(struct pci_dev *pdev);
-
-static struct pci_error_handlers e1000_err_handler = {
- .error_detected = e1000_io_error_detected,
- .slot_reset = e1000_io_slot_reset,
- .resume = e1000_io_resume,
-};
-
-static struct pci_driver e1000_driver = {
- .name = e1000_driver_name,
- .id_table = e1000_pci_tbl,
- .probe = e1000_probe,
- .remove = __devexit_p(e1000_remove),
-#ifdef CONFIG_PM
- /* Power Managment Hooks */
- .suspend = e1000_suspend,
- .resume = e1000_resume,
-#endif
- .shutdown = e1000_shutdown,
- .err_handler = &e1000_err_handler
-};
-
-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_register_driver(&e1000_driver);
- if (copybreak != COPYBREAK_DEFAULT) {
- if (copybreak == 0)
- printk(KERN_INFO "e1000: copybreak disabled\n");
- else
- printk(KERN_INFO "e1000: copybreak enabled for "
- "packets <= %u bytes\n", copybreak);
- }
- 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)
-{
- pci_unregister_driver(&e1000_driver);
-}
-
-module_exit(e1000_exit_module);
-
-static int e1000_request_irq(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- irq_handler_t handler = e1000_intr;
- int irq_flags = IRQF_SHARED;
- int err;
-
- if (hw->mac_type >= e1000_82571) {
- adapter->have_msi = !pci_enable_msi(adapter->pdev);
- if (adapter->have_msi) {
- handler = e1000_intr_msi;
- irq_flags = 0;
- }
- }
-
- err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
- netdev);
- if (err) {
- if (adapter->have_msi)
- pci_disable_msi(adapter->pdev);
- DPRINTK(PROBE, ERR,
- "Unable to allocate interrupt Error: %d\n", err);
- }
-
- return err;
-}
-
-static void e1000_free_irq(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
-
- free_irq(adapter->pdev->irq, netdev);
-
- if (adapter->have_msi)
- pci_disable_msi(adapter->pdev);
-}
-
-/**
- * e1000_irq_disable - Mask off interrupt generation on the NIC
- * @adapter: board private structure
- **/
-
-static void e1000_irq_disable(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- ew32(IMC, ~0);
- E1000_WRITE_FLUSH();
- synchronize_irq(adapter->pdev->irq);
-}
-
-/**
- * e1000_irq_enable - Enable default interrupt generation settings
- * @adapter: board private structure
- **/
-
-static void e1000_irq_enable(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- ew32(IMS, IMS_ENABLE_MASK);
- E1000_WRITE_FLUSH();
-}
-
-static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u16 vid = hw->mng_cookie.vlan_id;
- u16 old_vid = adapter->mng_vlan_id;
- if (adapter->vlgrp) {
- if (!vlan_group_get_device(adapter->vlgrp, vid)) {
- if (hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
- e1000_vlan_rx_add_vid(netdev, vid);
- adapter->mng_vlan_id = vid;
- } else
- adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
-
- if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
- (vid != old_vid) &&
- !vlan_group_get_device(adapter->vlgrp, old_vid))
- e1000_vlan_rx_kill_vid(netdev, old_vid);
- } else
- adapter->mng_vlan_id = vid;
- }
-}
-
-/**
- * e1000_release_hw_control - release control of the h/w to f/w
- * @adapter: address of board private structure
- *
- * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
- * For ASF and Pass Through versions of f/w this means that the
- * driver is no longer loaded. For AMT version (only with 82573) i
- * of the f/w this means that the network i/f is closed.
- *
- **/
-
-static void e1000_release_hw_control(struct e1000_adapter *adapter)
-{
- u32 ctrl_ext;
- u32 swsm;
- struct e1000_hw *hw = &adapter->hw;
-
- /* Let firmware taken over control of h/w */
- switch (hw->mac_type) {
- case e1000_82573:
- swsm = er32(SWSM);
- ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
- case e1000_ich8lan:
- ctrl_ext = er32(CTRL_EXT);
- ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
- break;
- default:
- break;
- }
-}
-
-/**
- * e1000_get_hw_control - get control of the h/w from f/w
- * @adapter: address of board private structure
- *
- * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
- * For ASF and Pass Through versions of f/w this means that
- * the driver is loaded. For AMT version (only with 82573)
- * of the f/w this means that the network i/f is open.
- *
- **/
-
-static void e1000_get_hw_control(struct e1000_adapter *adapter)
-{
- u32 ctrl_ext;
- u32 swsm;
- struct e1000_hw *hw = &adapter->hw;
-
- /* Let firmware know the driver has taken over */
- switch (hw->mac_type) {
- case e1000_82573:
- swsm = er32(SWSM);
- ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
- case e1000_ich8lan:
- ctrl_ext = er32(CTRL_EXT);
- ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
- break;
- default:
- break;
- }
-}
-
-static void e1000_init_manageability(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (adapter->en_mng_pt) {
- u32 manc = er32(MANC);
-
- /* disable hardware interception of ARP */
- manc &= ~(E1000_MANC_ARP_EN);
-
- /* enable receiving management packets to the host */
- /* this will probably generate destination unreachable messages
- * from the host OS, but the packets will be handled on SMBUS */
- if (hw->has_manc2h) {
- u32 manc2h = er32(MANC2H);
-
- manc |= E1000_MANC_EN_MNG2HOST;
-#define E1000_MNG2HOST_PORT_623 (1 << 5)
-#define E1000_MNG2HOST_PORT_664 (1 << 6)
- manc2h |= E1000_MNG2HOST_PORT_623;
- manc2h |= E1000_MNG2HOST_PORT_664;
- ew32(MANC2H, manc2h);
- }
-
- ew32(MANC, manc);
- }
-}
-
-static void e1000_release_manageability(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (adapter->en_mng_pt) {
- u32 manc = er32(MANC);
-
- /* re-enable hardware interception of ARP */
- manc |= E1000_MANC_ARP_EN;
-
- if (hw->has_manc2h)
- manc &= ~E1000_MANC_EN_MNG2HOST;
-
- /* don't explicitly have to mess with MANC2H since
- * MANC has an enable disable that gates MANC2H */
-
- ew32(MANC, manc);
- }
-}
-
-/**
- * e1000_configure - configure the hardware for RX and TX
- * @adapter = private board structure
- **/
-static void e1000_configure(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int i;
-
- e1000_set_rx_mode(netdev);
-
- e1000_restore_vlan(adapter);
- e1000_init_manageability(adapter);
-
- e1000_configure_tx(adapter);
- e1000_setup_rctl(adapter);
- e1000_configure_rx(adapter);
- /* call E1000_DESC_UNUSED which always leaves
- * at least 1 descriptor unused to make sure
- * next_to_use != next_to_clean */
- for (i = 0; i < adapter->num_rx_queues; i++) {
- struct e1000_rx_ring *ring = &adapter->rx_ring[i];
- adapter->alloc_rx_buf(adapter, ring,
- E1000_DESC_UNUSED(ring));
- }
-
- adapter->tx_queue_len = netdev->tx_queue_len;
-}
-
-int e1000_up(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /* hardware has been reset, we need to reload some things */
- e1000_configure(adapter);
-
- clear_bit(__E1000_DOWN, &adapter->flags);
-
- napi_enable(&adapter->napi);
-
- e1000_irq_enable(adapter);
-
- /* fire a link change interrupt to start the watchdog */
- ew32(ICS, E1000_ICS_LSC);
- return 0;
-}
-
-/**
- * e1000_power_up_phy - restore link in case the phy was powered down
- * @adapter: address of board private structure
- *
- * The phy may be powered down to save power and turn off link when the
- * driver is unloaded and wake on lan is not enabled (among others)
- * *** this routine MUST be followed by a call to e1000_reset ***
- *
- **/
-
-void e1000_power_up_phy(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 mii_reg = 0;
-
- /* Just clear the power down bit to wake the phy back up */
- if (hw->media_type == e1000_media_type_copper) {
- /* according to the manual, the phy will retain its
- * settings across a power-down/up cycle */
- e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
- mii_reg &= ~MII_CR_POWER_DOWN;
- e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
- }
-}
-
-static void e1000_power_down_phy(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /* Power down the PHY so no link is implied when interface is down *
- * The PHY cannot be powered down if any of the following is true *
- * (a) WoL is enabled
- * (b) AMT is active
- * (c) SoL/IDER session is active */
- if (!adapter->wol && hw->mac_type >= e1000_82540 &&
- hw->media_type == e1000_media_type_copper) {
- u16 mii_reg = 0;
-
- switch (hw->mac_type) {
- case e1000_82540:
- case e1000_82545:
- case e1000_82545_rev_3:
- case e1000_82546:
- case e1000_82546_rev_3:
- case e1000_82541:
- case e1000_82541_rev_2:
- case e1000_82547:
- case e1000_82547_rev_2:
- if (er32(MANC) & E1000_MANC_SMBUS_EN)
- goto out;
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_82573:
- case e1000_80003es2lan:
- case e1000_ich8lan:
- if (e1000_check_mng_mode(hw) ||
- e1000_check_phy_reset_block(hw))
- goto out;
- break;
- default:
- goto out;
- }
- e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
- mii_reg |= MII_CR_POWER_DOWN;
- e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
- mdelay(1);
- }
-out:
- return;
-}
-
-void e1000_down(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
-
- /* signal that we're down so the interrupt handler does not
- * reschedule our watchdog timer */
- set_bit(__E1000_DOWN, &adapter->flags);
-
- napi_disable(&adapter->napi);
-
- e1000_irq_disable(adapter);
-
- del_timer_sync(&adapter->tx_fifo_stall_timer);
- del_timer_sync(&adapter->watchdog_timer);
- del_timer_sync(&adapter->phy_info_timer);
-
- netdev->tx_queue_len = adapter->tx_queue_len;
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-
- e1000_reset(adapter);
- e1000_clean_all_tx_rings(adapter);
- e1000_clean_all_rx_rings(adapter);
-}
-
-void e1000_reinit_locked(struct e1000_adapter *adapter)
-{
- WARN_ON(in_interrupt());
- while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
- msleep(1);
- e1000_down(adapter);
- e1000_up(adapter);
- clear_bit(__E1000_RESETTING, &adapter->flags);
-}
-
-void e1000_reset(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 pba = 0, tx_space, min_tx_space, min_rx_space;
- u16 fc_high_water_mark = E1000_FC_HIGH_DIFF;
- bool legacy_pba_adjust = false;
-
- /* Repartition Pba for greater than 9k mtu
- * To take effect CTRL.RST is required.
- */
-
- switch (hw->mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- case e1000_82543:
- case e1000_82544:
- case e1000_82540:
- case e1000_82541:
- case e1000_82541_rev_2:
- legacy_pba_adjust = true;
- pba = E1000_PBA_48K;
- break;
- case e1000_82545:
- case e1000_82545_rev_3:
- case e1000_82546:
- case e1000_82546_rev_3:
- pba = E1000_PBA_48K;
- break;
- case e1000_82547:
- case e1000_82547_rev_2:
- legacy_pba_adjust = true;
- pba = E1000_PBA_30K;
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
- pba = E1000_PBA_38K;
- break;
- case e1000_82573:
- pba = E1000_PBA_20K;
- break;
- case e1000_ich8lan:
- pba = E1000_PBA_8K;
- case e1000_undefined:
- case e1000_num_macs:
- break;
- }
-
- if (legacy_pba_adjust) {
- if (adapter->netdev->mtu > E1000_RXBUFFER_8192)
- pba -= 8; /* allocate more FIFO for Tx */
-
- if (hw->mac_type == e1000_82547) {
- adapter->tx_fifo_head = 0;
- adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
- adapter->tx_fifo_size =
- (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
- atomic_set(&adapter->tx_fifo_stall, 0);
- }
- } else if (hw->max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) {
- /* adjust PBA for jumbo frames */
- ew32(PBA, pba);
-
- /* To maintain wire speed transmits, the Tx FIFO should be
- * large enough to accomodate two full transmit packets,
- * rounded up to the next 1KB and expressed in KB. Likewise,
- * the Rx FIFO should be large enough to accomodate at least
- * one full receive packet and is similarly rounded up and
- * expressed in KB. */
- pba = er32(PBA);
- /* upper 16 bits has Tx packet buffer allocation size in KB */
- tx_space = pba >> 16;
- /* lower 16 bits has Rx packet buffer allocation size in KB */
- pba &= 0xffff;
- /* don't include ethernet FCS because hardware appends/strips */
- min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE +
- VLAN_TAG_SIZE;
- min_tx_space = min_rx_space;
- min_tx_space *= 2;
- min_tx_space = ALIGN(min_tx_space, 1024);
- min_tx_space >>= 10;
- min_rx_space = ALIGN(min_rx_space, 1024);
- min_rx_space >>= 10;
-
- /* If current Tx allocation is less than the min Tx FIFO size,
- * and the min Tx FIFO size is less than the current Rx FIFO
- * allocation, take space away from current Rx allocation */
- if (tx_space < min_tx_space &&
- ((min_tx_space - tx_space) < pba)) {
- pba = pba - (min_tx_space - tx_space);
-
- /* PCI/PCIx hardware has PBA alignment constraints */
- switch (hw->mac_type) {
- case e1000_82545 ... e1000_82546_rev_3:
- pba &= ~(E1000_PBA_8K - 1);
- break;
- default:
- break;
- }
-
- /* if short on rx space, rx wins and must trump tx
- * adjustment or use Early Receive if available */
- if (pba < min_rx_space) {
- switch (hw->mac_type) {
- case e1000_82573:
- /* ERT enabled in e1000_configure_rx */
- break;
- default:
- pba = min_rx_space;
- break;
- }
- }
- }
- }
-
- ew32(PBA, pba);
-
- /* flow control settings */
- /* Set the FC high water mark to 90% of the FIFO size.
- * Required to clear last 3 LSB */
- fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
- /* We can't use 90% on small FIFOs because the remainder
- * would be less than 1 full frame. In this case, we size
- * it to allow at least a full frame above the high water
- * mark. */
- if (pba < E1000_PBA_16K)
- fc_high_water_mark = (pba * 1024) - 1600;
-
- hw->fc_high_water = fc_high_water_mark;
- hw->fc_low_water = fc_high_water_mark - 8;
- if (hw->mac_type == e1000_80003es2lan)
- hw->fc_pause_time = 0xFFFF;
- else
- hw->fc_pause_time = E1000_FC_PAUSE_TIME;
- hw->fc_send_xon = 1;
- hw->fc = hw->original_fc;
-
- /* Allow time for pending master requests to run */
- e1000_reset_hw(hw);
- if (hw->mac_type >= e1000_82544)
- ew32(WUC, 0);
-
- if (e1000_init_hw(hw))
- DPRINTK(PROBE, ERR, "Hardware Error\n");
- e1000_update_mng_vlan(adapter);
-
- /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
- if (hw->mac_type >= e1000_82544 &&
- hw->mac_type <= e1000_82547_rev_2 &&
- hw->autoneg == 1 &&
- hw->autoneg_advertised == ADVERTISE_1000_FULL) {
- u32 ctrl = er32(CTRL);
- /* clear phy power management bit if we are in gig only mode,
- * which if enabled will attempt negotiation to 100Mb, which
- * can cause a loss of link at power off or driver unload */
- ctrl &= ~E1000_CTRL_SWDPIN3;
- ew32(CTRL, ctrl);
- }
-
- /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
- ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
-
- e1000_reset_adaptive(hw);
- e1000_phy_get_info(hw, &adapter->phy_info);
-
- if (!adapter->smart_power_down &&
- (hw->mac_type == e1000_82571 ||
- hw->mac_type == e1000_82572)) {
- u16 phy_data = 0;
- /* speed up time to link by disabling smart power down, ignore
- * the return value of this function because there is nothing
- * different we would do if it failed */
- e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
- &phy_data);
- phy_data &= ~IGP02E1000_PM_SPD;
- e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
- phy_data);
- }
-
- e1000_release_manageability(adapter);
-}
-
-/**
- * Dump the eeprom for users having checksum issues
- **/
-static void e1000_dump_eeprom(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct ethtool_eeprom eeprom;
- const struct ethtool_ops *ops = netdev->ethtool_ops;
- u8 *data;
- int i;
- u16 csum_old, csum_new = 0;
-
- eeprom.len = ops->get_eeprom_len(netdev);
- eeprom.offset = 0;
-
- data = kmalloc(eeprom.len, GFP_KERNEL);
- if (!data) {
- printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
- " data\n");
- return;
- }
-
- ops->get_eeprom(netdev, &eeprom, data);
-
- csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
- (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
- for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
- csum_new += data[i] + (data[i + 1] << 8);
- csum_new = EEPROM_SUM - csum_new;
-
- printk(KERN_ERR "/*********************/\n");
- printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
- printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
-
- printk(KERN_ERR "Offset Values\n");
- printk(KERN_ERR "======== ======\n");
- print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
-
- printk(KERN_ERR "Include this output when contacting your support "
- "provider.\n");
- printk(KERN_ERR "This is not a software error! Something bad "
- "happened to your hardware or\n");
- printk(KERN_ERR "EEPROM image. Ignoring this "
- "problem could result in further problems,\n");
- printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
- printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
- "which is invalid\n");
- printk(KERN_ERR "and requires you to set the proper MAC "
- "address manually before continuing\n");
- printk(KERN_ERR "to enable this network device.\n");
- printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
- "to your hardware vendor\n");
- printk(KERN_ERR "or Intel Customer Support.\n");
- printk(KERN_ERR "/*********************/\n");
-
- kfree(data);
-}
-
-/**
- * e1000_is_need_ioport - determine if an adapter needs ioport resources or not
- * @pdev: PCI device information struct
- *
- * Return true if an adapter needs ioport resources
- **/
-static int e1000_is_need_ioport(struct pci_dev *pdev)
-{
- switch (pdev->device) {
- case E1000_DEV_ID_82540EM:
- case E1000_DEV_ID_82540EM_LOM:
- case E1000_DEV_ID_82540EP:
- case E1000_DEV_ID_82540EP_LOM:
- case E1000_DEV_ID_82540EP_LP:
- case E1000_DEV_ID_82541EI:
- case E1000_DEV_ID_82541EI_MOBILE:
- case E1000_DEV_ID_82541ER:
- case E1000_DEV_ID_82541ER_LOM:
- case E1000_DEV_ID_82541GI:
- case E1000_DEV_ID_82541GI_LF:
- case E1000_DEV_ID_82541GI_MOBILE:
- case E1000_DEV_ID_82544EI_COPPER:
- case E1000_DEV_ID_82544EI_FIBER:
- case E1000_DEV_ID_82544GC_COPPER:
- case E1000_DEV_ID_82544GC_LOM:
- case E1000_DEV_ID_82545EM_COPPER:
- case E1000_DEV_ID_82545EM_FIBER:
- case E1000_DEV_ID_82546EB_COPPER:
- case E1000_DEV_ID_82546EB_FIBER:
- case E1000_DEV_ID_82546EB_QUAD_COPPER:
- return true;
- default:
- return false;
- }
-}
-
-static const struct net_device_ops e1000_netdev_ops = {
- .ndo_open = e1000_open,
- .ndo_stop = e1000_close,
- .ndo_start_xmit = e1000_xmit_frame,
- .ndo_get_stats = e1000_get_stats,
- .ndo_set_rx_mode = e1000_set_rx_mode,
- .ndo_set_mac_address = e1000_set_mac,
- .ndo_tx_timeout = e1000_tx_timeout,
- .ndo_change_mtu = e1000_change_mtu,
- .ndo_do_ioctl = e1000_ioctl,
- .ndo_validate_addr = eth_validate_addr,
-
- .ndo_vlan_rx_register = e1000_vlan_rx_register,
- .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = e1000_netpoll,
-#endif
-};
-
-/**
- * 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;
- struct e1000_hw *hw;
-
- static int cards_found = 0;
- static int global_quad_port_a = 0; /* global ksp3 port a indication */
- int i, err, pci_using_dac;
- u16 eeprom_data = 0;
- u16 eeprom_apme_mask = E1000_EEPROM_APME;
- int bars, need_ioport;
-
- /* do not allocate ioport bars when not needed */
- need_ioport = e1000_is_need_ioport(pdev);
- if (need_ioport) {
- bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
- err = pci_enable_device(pdev);
- } else {
- bars = pci_select_bars(pdev, IORESOURCE_MEM);
- err = pci_enable_device_mem(pdev);
- }
- if (err)
- return err;
-
- if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) &&
- !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
- pci_using_dac = 1;
- } else {
- err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
- if (err) {
- err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
- if (err) {
- E1000_ERR("No usable DMA configuration, "
- "aborting\n");
- goto err_dma;
- }
- }
- pci_using_dac = 0;
- }
-
- err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
- if (err)
- goto err_pci_reg;
-
- pci_set_master(pdev);
-
- err = -ENOMEM;
- netdev = alloc_etherdev(sizeof(struct e1000_adapter));
- if (!netdev)
- goto err_alloc_etherdev;
-
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- pci_set_drvdata(pdev, netdev);
- adapter = netdev_priv(netdev);
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- adapter->msg_enable = (1 << debug) - 1;
- adapter->bars = bars;
- adapter->need_ioport = need_ioport;
-
- hw = &adapter->hw;
- hw->back = adapter;
-
- err = -EIO;
- hw->hw_addr = pci_ioremap_bar(pdev, BAR_0);
- if (!hw->hw_addr)
- goto err_ioremap;
-
- if (adapter->need_ioport) {
- for (i = BAR_1; i <= BAR_5; i++) {
- if (pci_resource_len(pdev, i) == 0)
- continue;
- if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
- hw->io_base = pci_resource_start(pdev, i);
- break;
- }
- }
- }
-
- netdev->netdev_ops = &e1000_netdev_ops;
- e1000_set_ethtool_ops(netdev);
- netdev->watchdog_timeo = 5 * HZ;
- netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
-
- strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
-
- adapter->bd_number = cards_found;
-
- /* setup the private structure */
-
- err = e1000_sw_init(adapter);
- if (err)
- goto err_sw_init;
-
- err = -EIO;
- /* Flash BAR mapping must happen after e1000_sw_init
- * because it depends on mac_type */
- if ((hw->mac_type == e1000_ich8lan) &&
- (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
- hw->flash_address = pci_ioremap_bar(pdev, 1);
- if (!hw->flash_address)
- goto err_flashmap;
- }
-
- if (e1000_check_phy_reset_block(hw))
- DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
-
- if (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;
- if (hw->mac_type == e1000_ich8lan)
- netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
- }
-
- if ((hw->mac_type >= e1000_82544) &&
- (hw->mac_type != e1000_82547))
- netdev->features |= NETIF_F_TSO;
-
- if (hw->mac_type > e1000_82547_rev_2)
- netdev->features |= NETIF_F_TSO6;
- if (pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
-
- netdev->features |= NETIF_F_LLTX;
-
- netdev->vlan_features |= NETIF_F_TSO;
- netdev->vlan_features |= NETIF_F_TSO6;
- netdev->vlan_features |= NETIF_F_HW_CSUM;
- netdev->vlan_features |= NETIF_F_SG;
-
- adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
-
- /* initialize eeprom parameters */
- if (e1000_init_eeprom_params(hw)) {
- E1000_ERR("EEPROM initialization failed\n");
- goto err_eeprom;
- }
-
- /* before reading the EEPROM, reset the controller to
- * put the device in a known good starting state */
-
- e1000_reset_hw(hw);
-
- /* make sure the EEPROM is good */
- if (e1000_validate_eeprom_checksum(hw) < 0) {
- DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
- e1000_dump_eeprom(adapter);
- /*
- * set MAC address to all zeroes to invalidate and temporary
- * disable this device for the user. This blocks regular
- * traffic while still permitting ethtool ioctls from reaching
- * the hardware as well as allowing the user to run the
- * interface after manually setting a hw addr using
- * `ip set address`
- */
- memset(hw->mac_addr, 0, netdev->addr_len);
- } else {
- /* copy the MAC address out of the EEPROM */
- if (e1000_read_mac_addr(hw))
- DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
- }
- /* don't block initalization here due to bad MAC address */
- memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
- memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len);
-
- if (!is_valid_ether_addr(netdev->perm_addr))
- DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
-
- e1000_get_bus_info(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_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->reset_task, e1000_reset_task);
-
- e1000_check_options(adapter);
-
- /* Initial Wake on LAN setting
- * If APM wake is enabled in the EEPROM,
- * enable the ACPI Magic Packet filter
- */
-
- switch (hw->mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- case e1000_82543:
- break;
- case e1000_82544:
- e1000_read_eeprom(hw,
- EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
- eeprom_apme_mask = E1000_EEPROM_82544_APM;
- break;
- case e1000_ich8lan:
- e1000_read_eeprom(hw,
- EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
- eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
- break;
- case e1000_82546:
- case e1000_82546_rev_3:
- case e1000_82571:
- case e1000_80003es2lan:
- if (er32(STATUS) & E1000_STATUS_FUNC_1){
- e1000_read_eeprom(hw,
- EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
- break;
- }
- /* Fall Through */
- default:
- e1000_read_eeprom(hw,
- EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
- break;
- }
- if (eeprom_data & eeprom_apme_mask)
- adapter->eeprom_wol |= E1000_WUFC_MAG;
-
- /* now that we have the eeprom settings, apply the special cases
- * where the eeprom may be wrong or the board simply won't support
- * wake on lan on a particular port */
- switch (pdev->device) {
- case E1000_DEV_ID_82546GB_PCIE:
- adapter->eeprom_wol = 0;
- break;
- case E1000_DEV_ID_82546EB_FIBER:
- case E1000_DEV_ID_82546GB_FIBER:
- case E1000_DEV_ID_82571EB_FIBER:
- /* Wake events only supported on port A for dual fiber
- * regardless of eeprom setting */
- if (er32(STATUS) & E1000_STATUS_FUNC_1)
- adapter->eeprom_wol = 0;
- break;
- case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
- case E1000_DEV_ID_82571EB_QUAD_COPPER:
- case E1000_DEV_ID_82571EB_QUAD_FIBER:
- case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
- case E1000_DEV_ID_82571PT_QUAD_COPPER:
- /* if quad port adapter, disable WoL on all but port A */
- if (global_quad_port_a != 0)
- adapter->eeprom_wol = 0;
- else
- adapter->quad_port_a = 1;
- /* Reset for multiple quad port adapters */
- if (++global_quad_port_a == 4)
- global_quad_port_a = 0;
- break;
- }
-
- /* initialize the wol settings based on the eeprom settings */
- adapter->wol = adapter->eeprom_wol;
- device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
-
- /* print bus type/speed/width info */
- DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
- ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
- (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
- ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
- (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
- (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
- (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
- (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
- ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
- (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
- (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
- "32-bit"));
-
- printk("%pM\n", netdev->dev_addr);
-
- if (hw->bus_type == e1000_bus_type_pci_express) {
- DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no "
- "longer be supported by this driver in the future.\n",
- pdev->vendor, pdev->device);
- DPRINTK(PROBE, WARNING, "please use the \"e1000e\" "
- "driver instead.\n");
- }
-
- /* reset the hardware with the new settings */
- e1000_reset(adapter);
-
- /* If the controller is 82573 and f/w is AMT, do not set
- * DRV_LOAD until the interface is up. For all other cases,
- * let the f/w know that the h/w is now under the control
- * of the driver. */
- if (hw->mac_type != e1000_82573 ||
- !e1000_check_mng_mode(hw))
- e1000_get_hw_control(adapter);
-
- /* tell the stack to leave us alone until e1000_open() is called */
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-
- strcpy(netdev->name, "eth%d");
- err = register_netdev(netdev);
- if (err)
- goto err_register;
-
- DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
-
- cards_found++;
- return 0;
-
-err_register:
- e1000_release_hw_control(adapter);
-err_eeprom:
- if (!e1000_check_phy_reset_block(hw))
- e1000_phy_hw_reset(hw);
-
- if (hw->flash_address)
- iounmap(hw->flash_address);
-err_flashmap:
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-err_sw_init:
- iounmap(hw->hw_addr);
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
- pci_release_selected_regions(pdev, bars);
-err_pci_reg:
-err_dma:
- pci_disable_device(pdev);
- return err;
-}
-
-/**
- * e1000_remove - Device Removal Routine
- * @pdev: PCI device information struct
- *
- * e1000_remove is called by the PCI subsystem to alert the driver
- * that it should release a PCI device. The could be caused by a
- * Hot-Plug event, or because the driver is going to be removed from
- * memory.
- **/
-
-static void __devexit e1000_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- cancel_work_sync(&adapter->reset_task);
-
- e1000_release_manageability(adapter);
-
- /* Release control of h/w to f/w. If f/w is AMT enabled, this
- * would have already happened in close and is redundant. */
- e1000_release_hw_control(adapter);
-
- unregister_netdev(netdev);
-
- if (!e1000_check_phy_reset_block(hw))
- e1000_phy_hw_reset(hw);
-
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-
- iounmap(hw->hw_addr);
- if (hw->flash_address)
- iounmap(hw->flash_address);
- pci_release_selected_regions(pdev, adapter->bars);
-
- 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;
- hw->revision_id = pdev->revision;
-
- pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
-
- adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
- 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;
- }
-
- 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;
- }
-
- adapter->num_tx_queues = 1;
- adapter->num_rx_queues = 1;
-
- if (e1000_alloc_queues(adapter)) {
- DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
- return -ENOMEM;
- }
-
- spin_lock_init(&adapter->tx_queue_lock);
-
- /* Explicitly disable IRQ since the NIC can be in any state. */
- e1000_irq_disable(adapter);
-
- spin_lock_init(&adapter->stats_lock);
-
- set_bit(__E1000_DOWN, &adapter->flags);
-
- return 0;
-}
-
-/**
- * e1000_alloc_queues - Allocate memory for all rings
- * @adapter: board private structure to initialize
- *
- * We allocate one ring per queue at run-time since we don't know the
- * number of queues at compile-time.
- **/
-
-static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
-{
- adapter->tx_ring = kcalloc(adapter->num_tx_queues,
- sizeof(struct e1000_tx_ring), GFP_KERNEL);
- if (!adapter->tx_ring)
- return -ENOMEM;
-
- adapter->rx_ring = kcalloc(adapter->num_rx_queues,
- sizeof(struct e1000_rx_ring), GFP_KERNEL);
- if (!adapter->rx_ring) {
- kfree(adapter->tx_ring);
- return -ENOMEM;
- }
-
- return E1000_SUCCESS;
-}
-
-/**
- * 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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- int err;
-
- /* disallow open during test */
- if (test_bit(__E1000_TESTING, &adapter->flags))
- return -EBUSY;
-
- /* allocate transmit descriptors */
- err = e1000_setup_all_tx_resources(adapter);
- if (err)
- goto err_setup_tx;
-
- /* allocate receive descriptors */
- err = e1000_setup_all_rx_resources(adapter);
- if (err)
- goto err_setup_rx;
-
- e1000_power_up_phy(adapter);
-
- adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
- if ((hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
- e1000_update_mng_vlan(adapter);
- }
-
- /* If AMT is enabled, let the firmware know that the network
- * interface is now open */
- if (hw->mac_type == e1000_82573 &&
- e1000_check_mng_mode(hw))
- e1000_get_hw_control(adapter);
-
- /* before we allocate an interrupt, we must be ready to handle it.
- * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
- * as soon as we call pci_request_irq, so we have to setup our
- * clean_rx handler before we do so. */
- e1000_configure(adapter);
-
- err = e1000_request_irq(adapter);
- if (err)
- goto err_req_irq;
-
- /* From here on the code is the same as e1000_up() */
- clear_bit(__E1000_DOWN, &adapter->flags);
-
- napi_enable(&adapter->napi);
-
- e1000_irq_enable(adapter);
-
- netif_start_queue(netdev);
-
- /* fire a link status change interrupt to start the watchdog */
- ew32(ICS, E1000_ICS_LSC);
-
- return E1000_SUCCESS;
-
-err_req_irq:
- e1000_release_hw_control(adapter);
- e1000_power_down_phy(adapter);
- e1000_free_all_rx_resources(adapter);
-err_setup_rx:
- e1000_free_all_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(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
- e1000_down(adapter);
- e1000_power_down_phy(adapter);
- e1000_free_irq(adapter);
-
- e1000_free_all_tx_resources(adapter);
- e1000_free_all_rx_resources(adapter);
-
- /* kill manageability vlan ID if supported, but not if a vlan with
- * the same ID is registered on the host OS (let 8021q kill it) */
- if ((hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
- !(adapter->vlgrp &&
- vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
- e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
- }
-
- /* If AMT is enabled, let the firmware know that the network
- * interface is now closed */
- if (hw->mac_type == e1000_82573 &&
- e1000_check_mng_mode(hw))
- e1000_release_hw_control(adapter);
-
- return 0;
-}
-
-/**
- * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
- * @adapter: address of board private structure
- * @start: address of beginning of memory
- * @len: length of memory
- **/
-static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
- unsigned long len)
-{
- struct e1000_hw *hw = &adapter->hw;
- 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 64k boundary due to errata 23 */
- if (hw->mac_type == e1000_82545 ||
- hw->mac_type == e1000_82546) {
- return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
- }
-
- return true;
-}
-
-/**
- * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
- * @adapter: board private structure
- * @txdr: tx descriptor ring (for a specific queue) to setup
- *
- * Return 0 on success, negative on failure
- **/
-
-static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
- struct e1000_tx_ring *txdr)
-{
- 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);
- txdr->size = ALIGN(txdr->size, 4096);
-
- txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
- if (!txdr->desc) {
-setup_tx_desc_die:
- vfree(txdr->buffer_info);
- DPRINTK(PROBE, ERR,
- "Unable to allocate memory for the transmit descriptor ring\n");
- return -ENOMEM;
- }
-
- /* Fix for errata 23, can't 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, critical 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 allocation, new allocation was successful */
- pci_free_consistent(pdev, txdr->size, olddesc, olddma);
- }
- }
- memset(txdr->desc, 0, txdr->size);
-
- txdr->next_to_use = 0;
- txdr->next_to_clean = 0;
- spin_lock_init(&txdr->tx_lock);
-
- return 0;
-}
-
-/**
- * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
- * (Descriptors) for all queues
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
-
-int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
-{
- int i, err = 0;
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
- if (err) {
- DPRINTK(PROBE, ERR,
- "Allocation for Tx Queue %u failed\n", i);
- for (i-- ; i >= 0; i--)
- e1000_free_tx_resources(adapter,
- &adapter->tx_ring[i]);
- break;
- }
- }
-
- return err;
-}
-
-/**
- * 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)
-{
- u64 tdba;
- struct e1000_hw *hw = &adapter->hw;
- u32 tdlen, tctl, tipg, tarc;
- u32 ipgr1, ipgr2;
-
- /* Setup the HW Tx Head and Tail descriptor pointers */
-
- switch (adapter->num_tx_queues) {
- case 1:
- default:
- tdba = adapter->tx_ring[0].dma;
- tdlen = adapter->tx_ring[0].count *
- sizeof(struct e1000_tx_desc);
- ew32(TDLEN, tdlen);
- ew32(TDBAH, (tdba >> 32));
- ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
- ew32(TDT, 0);
- ew32(TDH, 0);
- adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
- adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
- break;
- }
-
- /* Set the default values for the Tx Inter Packet Gap timer */
- if (hw->mac_type <= e1000_82547_rev_2 &&
- (hw->media_type == e1000_media_type_fiber ||
- hw->media_type == e1000_media_type_internal_serdes))
- tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
- else
- tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
-
- switch (hw->mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- tipg = DEFAULT_82542_TIPG_IPGT;
- ipgr1 = DEFAULT_82542_TIPG_IPGR1;
- ipgr2 = DEFAULT_82542_TIPG_IPGR2;
- break;
- case e1000_80003es2lan:
- ipgr1 = DEFAULT_82543_TIPG_IPGR1;
- ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
- break;
- default:
- ipgr1 = DEFAULT_82543_TIPG_IPGR1;
- ipgr2 = DEFAULT_82543_TIPG_IPGR2;
- break;
- }
- tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
- tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
- ew32(TIPG, tipg);
-
- /* Set the Tx Interrupt Delay register */
-
- ew32(TIDV, adapter->tx_int_delay);
- if (hw->mac_type >= e1000_82540)
- ew32(TADV, adapter->tx_abs_int_delay);
-
- /* Program the Transmit Control Register */
-
- tctl = er32(TCTL);
- tctl &= ~E1000_TCTL_CT;
- tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
-
- if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
- tarc = er32(TARC0);
- /* set the speed mode bit, we'll clear it if we're not at
- * gigabit link later */
- tarc |= (1 << 21);
- ew32(TARC0, tarc);
- } else if (hw->mac_type == e1000_80003es2lan) {
- tarc = er32(TARC0);
- tarc |= 1;
- ew32(TARC0, tarc);
- tarc = er32(TARC1);
- tarc |= 1;
- ew32(TARC1, tarc);
- }
-
- e1000_config_collision_dist(hw);
-
- /* Setup Transmit Descriptor Settings for eop descriptor */
- adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
-
- /* only set IDE if we are delaying interrupts using the timers */
- if (adapter->tx_int_delay)
- adapter->txd_cmd |= E1000_TXD_CMD_IDE;
-
- if (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 (hw->mac_type == e1000_82544 &&
- hw->bus_type == e1000_bus_type_pcix)
- adapter->pcix_82544 = 1;
-
- ew32(TCTL, tctl);
-
-}
-
-/**
- * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
- * @adapter: board private structure
- * @rxdr: rx descriptor ring (for a specific queue) to setup
- *
- * Returns 0 on success, negative on failure
- **/
-
-static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rxdr)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
- int size, desc_len;
-
- 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 receive descriptor ring\n");
- return -ENOMEM;
- }
- memset(rxdr->buffer_info, 0, size);
-
- if (hw->mac_type <= e1000_82547_rev_2)
- desc_len = sizeof(struct e1000_rx_desc);
- else
- desc_len = sizeof(union e1000_rx_desc_packet_split);
-
- /* Round up to nearest 4K */
-
- rxdr->size = rxdr->count * desc_len;
- rxdr->size = ALIGN(rxdr->size, 4096);
-
- rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
-
- if (!rxdr->desc) {
- DPRINTK(PROBE, ERR,
- "Unable to allocate memory for the receive descriptor ring\n");
-setup_rx_desc_die:
- vfree(rxdr->buffer_info);
- return -ENOMEM;
- }
-
- /* Fix for errata 23, can't 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, critical failure */
- if (!rxdr->desc) {
- pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
- DPRINTK(PROBE, ERR,
- "Unable to allocate memory "
- "for the receive descriptor ring\n");
- 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");
- goto setup_rx_desc_die;
- } else {
- /* Free old allocation, new allocation was successful */
- 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_all_rx_resources - wrapper to allocate Rx resources
- * (Descriptors) for all queues
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
-
-int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
-{
- int i, err = 0;
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
- if (err) {
- DPRINTK(PROBE, ERR,
- "Allocation for Rx Queue %u failed\n", i);
- for (i-- ; i >= 0; i--)
- e1000_free_rx_resources(adapter,
- &adapter->rx_ring[i]);
- break;
- }
- }
-
- return err;
-}
-
-/**
- * e1000_setup_rctl - configure the receive control registers
- * @adapter: Board private structure
- **/
-#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
- (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
-static void e1000_setup_rctl(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl;
-
- rctl = er32(RCTL);
-
- rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
-
- rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
- E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
- (hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
-
- if (hw->tbi_compatibility_on == 1)
- rctl |= E1000_RCTL_SBP;
- else
- rctl &= ~E1000_RCTL_SBP;
-
- if (adapter->netdev->mtu <= ETH_DATA_LEN)
- rctl &= ~E1000_RCTL_LPE;
- else
- rctl |= E1000_RCTL_LPE;
-
- /* Setup buffer sizes */
- rctl &= ~E1000_RCTL_SZ_4096;
- rctl |= E1000_RCTL_BSEX;
- switch (adapter->rx_buffer_len) {
- case E1000_RXBUFFER_256:
- rctl |= E1000_RCTL_SZ_256;
- rctl &= ~E1000_RCTL_BSEX;
- break;
- case E1000_RXBUFFER_512:
- rctl |= E1000_RCTL_SZ_512;
- rctl &= ~E1000_RCTL_BSEX;
- break;
- case E1000_RXBUFFER_1024:
- rctl |= E1000_RCTL_SZ_1024;
- rctl &= ~E1000_RCTL_BSEX;
- break;
- case E1000_RXBUFFER_2048:
- default:
- rctl |= E1000_RCTL_SZ_2048;
- rctl &= ~E1000_RCTL_BSEX;
- 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;
- }
-
- ew32(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)
-{
- u64 rdba;
- struct e1000_hw *hw = &adapter->hw;
- u32 rdlen, rctl, rxcsum, ctrl_ext;
-
- rdlen = adapter->rx_ring[0].count *
- sizeof(struct e1000_rx_desc);
- adapter->clean_rx = e1000_clean_rx_irq;
- adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
-
- /* disable receives while setting up the descriptors */
- rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
-
- /* set the Receive Delay Timer Register */
- ew32(RDTR, adapter->rx_int_delay);
-
- if (hw->mac_type >= e1000_82540) {
- ew32(RADV, adapter->rx_abs_int_delay);
- if (adapter->itr_setting != 0)
- ew32(ITR, 1000000000 / (adapter->itr * 256));
- }
-
- if (hw->mac_type >= e1000_82571) {
- ctrl_ext = er32(CTRL_EXT);
- /* Reset delay timers after every interrupt */
- ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
- /* Auto-Mask interrupts upon ICR access */
- ctrl_ext |= E1000_CTRL_EXT_IAME;
- ew32(IAM, 0xffffffff);
- ew32(CTRL_EXT, ctrl_ext);
- E1000_WRITE_FLUSH();
- }
-
- /* Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring */
- switch (adapter->num_rx_queues) {
- case 1:
- default:
- rdba = adapter->rx_ring[0].dma;
- ew32(RDLEN, rdlen);
- ew32(RDBAH, (rdba >> 32));
- ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
- ew32(RDT, 0);
- ew32(RDH, 0);
- adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
- adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
- break;
- }
-
- /* Enable 82543 Receive Checksum Offload for TCP and UDP */
- if (hw->mac_type >= e1000_82543) {
- rxcsum = er32(RXCSUM);
- if (adapter->rx_csum)
- rxcsum |= E1000_RXCSUM_TUOFL;
- else
- /* don't need to clear IPPCSE as it defaults to 0 */
- rxcsum &= ~E1000_RXCSUM_TUOFL;
- ew32(RXCSUM, rxcsum);
- }
-
- /* Enable Receives */
- ew32(RCTL, rctl);
-}
-
-/**
- * e1000_free_tx_resources - Free Tx Resources per Queue
- * @adapter: board private structure
- * @tx_ring: Tx descriptor ring for a specific queue
- *
- * Free all transmit software resources
- **/
-
-static void e1000_free_tx_resources(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- e1000_clean_tx_ring(adapter, tx_ring);
-
- vfree(tx_ring->buffer_info);
- tx_ring->buffer_info = NULL;
-
- pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
-
- tx_ring->desc = NULL;
-}
-
-/**
- * e1000_free_all_tx_resources - Free Tx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all transmit software resources
- **/
-
-void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
-}
-
-static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
- struct e1000_buffer *buffer_info)
-{
- if (buffer_info->dma) {
- pci_unmap_page(adapter->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;
- }
- /* buffer_info must be completely set up in the transmit path */
-}
-
-/**
- * e1000_clean_tx_ring - Free Tx Buffers
- * @adapter: board private structure
- * @tx_ring: ring to be cleaned
- **/
-
-static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_buffer *buffer_info;
- unsigned long size;
- unsigned int i;
-
- /* Free all the Tx ring sk_buffs */
-
- 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;
- tx_ring->last_tx_tso = 0;
-
- writel(0, hw->hw_addr + tx_ring->tdh);
- writel(0, hw->hw_addr + tx_ring->tdt);
-}
-
-/**
- * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
- * @adapter: board private structure
- **/
-
-static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
-}
-
-/**
- * e1000_free_rx_resources - Free Rx Resources
- * @adapter: board private structure
- * @rx_ring: ring to clean the resources from
- *
- * Free all receive software resources
- **/
-
-static void e1000_free_rx_resources(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- e1000_clean_rx_ring(adapter, rx_ring);
-
- 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_free_all_rx_resources - Free Rx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all receive software resources
- **/
-
-void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
-}
-
-/**
- * e1000_clean_rx_ring - Free Rx Buffers per Queue
- * @adapter: board private structure
- * @rx_ring: ring to free buffers from
- **/
-
-static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- 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;
-
- writel(0, hw->hw_addr + rx_ring->rdh);
- writel(0, hw->hw_addr + rx_ring->rdt);
-}
-
-/**
- * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
- * @adapter: board private structure
- **/
-
-static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
-}
-
-/* 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 e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 rctl;
-
- e1000_pci_clear_mwi(hw);
-
- rctl = er32(RCTL);
- rctl |= E1000_RCTL_RST;
- ew32(RCTL, rctl);
- E1000_WRITE_FLUSH();
- mdelay(5);
-
- if (netif_running(netdev))
- e1000_clean_all_rx_rings(adapter);
-}
-
-static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 rctl;
-
- rctl = er32(RCTL);
- rctl &= ~E1000_RCTL_RST;
- ew32(RCTL, rctl);
- E1000_WRITE_FLUSH();
- mdelay(5);
-
- if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
- e1000_pci_set_mwi(hw);
-
- if (netif_running(netdev)) {
- /* No need to loop, because 82542 supports only 1 queue */
- struct e1000_rx_ring *ring = &adapter->rx_ring[0];
- e1000_configure_rx(adapter);
- adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
- }
-}
-
-/**
- * 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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- 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 (hw->mac_type == e1000_82542_rev2_0)
- e1000_enter_82542_rst(adapter);
-
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
-
- e1000_rar_set(hw, hw->mac_addr, 0);
-
- /* With 82571 controllers, LAA may be overwritten (with the default)
- * due to controller reset from the other port. */
- if (hw->mac_type == e1000_82571) {
- /* activate the work around */
- hw->laa_is_present = 1;
-
- /* Hold a copy of the LAA in RAR[14] This is done so that
- * between the time RAR[0] gets clobbered and the time it
- * gets fixed (in e1000_watchdog), the actual LAA is in one
- * of the RARs and no incoming packets directed to this port
- * are dropped. Eventaully the LAA will be in RAR[0] and
- * RAR[14] */
- e1000_rar_set(hw, hw->mac_addr,
- E1000_RAR_ENTRIES - 1);
- }
-
- if (hw->mac_type == e1000_82542_rev2_0)
- e1000_leave_82542_rst(adapter);
-
- return 0;
-}
-
-/**
- * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
- * @netdev: network interface device structure
- *
- * The set_rx_mode entry point is called whenever the unicast or multicast
- * address lists or the network interface flags are updated. This routine is
- * responsible for configuring the hardware for proper unicast, multicast,
- * promiscuous mode, and all-multi behavior.
- **/
-
-static void e1000_set_rx_mode(struct net_device *netdev)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct dev_addr_list *uc_ptr;
- struct dev_addr_list *mc_ptr;
- u32 rctl;
- u32 hash_value;
- int i, rar_entries = E1000_RAR_ENTRIES;
- int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
- E1000_NUM_MTA_REGISTERS_ICH8LAN :
- E1000_NUM_MTA_REGISTERS;
-
- if (hw->mac_type == e1000_ich8lan)
- rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
-
- /* reserve RAR[14] for LAA over-write work-around */
- if (hw->mac_type == e1000_82571)
- rar_entries--;
-
- /* Check for Promiscuous and All Multicast modes */
-
- rctl = er32(RCTL);
-
- if (netdev->flags & IFF_PROMISC) {
- rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
- rctl &= ~E1000_RCTL_VFE;
- } else {
- if (netdev->flags & IFF_ALLMULTI) {
- rctl |= E1000_RCTL_MPE;
- } else {
- rctl &= ~E1000_RCTL_MPE;
- }
- if (adapter->hw.mac_type != e1000_ich8lan)
- rctl |= E1000_RCTL_VFE;
- }
-
- uc_ptr = NULL;
- if (netdev->uc_count > rar_entries - 1) {
- rctl |= E1000_RCTL_UPE;
- } else if (!(netdev->flags & IFF_PROMISC)) {
- rctl &= ~E1000_RCTL_UPE;
- uc_ptr = netdev->uc_list;
- }
-
- ew32(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 addresses into the exact filters 1-14. Unicast
- * addresses take precedence to avoid disabling unicast filtering
- * when possible.
- *
- * RAR 0 is used for the station MAC adddress
- * if there are not 14 addresses, go ahead and clear the filters
- * -- with 82571 controllers only 0-13 entries are filled here
- */
- mc_ptr = netdev->mc_list;
-
- for (i = 1; i < rar_entries; i++) {
- if (uc_ptr) {
- e1000_rar_set(hw, uc_ptr->da_addr, i);
- uc_ptr = uc_ptr->next;
- } else if (mc_ptr) {
- e1000_rar_set(hw, mc_ptr->da_addr, i);
- mc_ptr = mc_ptr->next;
- } else {
- E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
- E1000_WRITE_FLUSH();
- E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
- E1000_WRITE_FLUSH();
- }
- }
- WARN_ON(uc_ptr != NULL);
-
- /* clear the old settings from the multicast hash table */
-
- for (i = 0; i < mta_reg_count; i++) {
- E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
- E1000_WRITE_FLUSH();
- }
-
- /* 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->da_addr);
- e1000_mta_set(hw, hash_value);
- }
-
- if (hw->mac_type == e1000_82542_rev2_0)
- e1000_leave_82542_rst(adapter);
-}
-
-/* Need to wait a few seconds after link up to get diagnostic information from
- * the phy */
-
-static void e1000_update_phy_info(unsigned long data)
-{
- struct e1000_adapter *adapter = (struct e1000_adapter *)data;
- struct e1000_hw *hw = &adapter->hw;
- e1000_phy_get_info(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 e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 tctl;
-
- if (atomic_read(&adapter->tx_fifo_stall)) {
- if ((er32(TDT) == er32(TDH)) &&
- (er32(TDFT) == er32(TDFH)) &&
- (er32(TDFTS) == er32(TDFHS))) {
- tctl = er32(TCTL);
- ew32(TCTL, tctl & ~E1000_TCTL_EN);
- ew32(TDFT, adapter->tx_head_addr);
- ew32(TDFH, adapter->tx_head_addr);
- ew32(TDFTS, adapter->tx_head_addr);
- ew32(TDFHS, adapter->tx_head_addr);
- ew32(TCTL, tctl);
- E1000_WRITE_FLUSH();
-
- 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;
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct e1000_tx_ring *txdr = adapter->tx_ring;
- u32 link, tctl;
- s32 ret_val;
-
- ret_val = e1000_check_for_link(hw);
- if ((ret_val == E1000_ERR_PHY) &&
- (hw->phy_type == e1000_phy_igp_3) &&
- (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
- /* See e1000_kumeran_lock_loss_workaround() */
- DPRINTK(LINK, INFO,
- "Gigabit has been disabled, downgrading speed\n");
- }
-
- if (hw->mac_type == e1000_82573) {
- e1000_enable_tx_pkt_filtering(hw);
- if (adapter->mng_vlan_id != hw->mng_cookie.vlan_id)
- e1000_update_mng_vlan(adapter);
- }
-
- if ((hw->media_type == e1000_media_type_internal_serdes) &&
- !(er32(TXCW) & E1000_TXCW_ANE))
- link = !hw->serdes_link_down;
- else
- link = er32(STATUS) & E1000_STATUS_LU;
-
- if (link) {
- if (!netif_carrier_ok(netdev)) {
- u32 ctrl;
- bool txb2b = true;
- e1000_get_speed_and_duplex(hw,
- &adapter->link_speed,
- &adapter->link_duplex);
-
- ctrl = er32(CTRL);
- printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, "
- "Flow Control: %s\n",
- netdev->name,
- adapter->link_speed,
- adapter->link_duplex == FULL_DUPLEX ?
- "Full Duplex" : "Half Duplex",
- ((ctrl & E1000_CTRL_TFCE) && (ctrl &
- E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
- E1000_CTRL_RFCE) ? "RX" : ((ctrl &
- E1000_CTRL_TFCE) ? "TX" : "None" )));
-
- /* tweak tx_queue_len according to speed/duplex
- * and adjust the timeout factor */
- netdev->tx_queue_len = adapter->tx_queue_len;
- adapter->tx_timeout_factor = 1;
- switch (adapter->link_speed) {
- case SPEED_10:
- txb2b = false;
- netdev->tx_queue_len = 10;
- adapter->tx_timeout_factor = 8;
- break;
- case SPEED_100:
- txb2b = false;
- netdev->tx_queue_len = 100;
- /* maybe add some timeout factor ? */
- break;
- }
-
- if ((hw->mac_type == e1000_82571 ||
- hw->mac_type == e1000_82572) &&
- !txb2b) {
- u32 tarc0;
- tarc0 = er32(TARC0);
- tarc0 &= ~(1 << 21);
- ew32(TARC0, tarc0);
- }
-
- /* disable TSO for pcie and 10/100 speeds, to avoid
- * some hardware issues */
- if (!adapter->tso_force &&
- hw->bus_type == e1000_bus_type_pci_express){
- switch (adapter->link_speed) {
- case SPEED_10:
- case SPEED_100:
- DPRINTK(PROBE,INFO,
- "10/100 speed: disabling TSO\n");
- netdev->features &= ~NETIF_F_TSO;
- netdev->features &= ~NETIF_F_TSO6;
- break;
- case SPEED_1000:
- netdev->features |= NETIF_F_TSO;
- netdev->features |= NETIF_F_TSO6;
- break;
- default:
- /* oops */
- break;
- }
- }
-
- /* enable transmits in the hardware, need to do this
- * after setting TARC0 */
- tctl = er32(TCTL);
- tctl |= E1000_TCTL_EN;
- ew32(TCTL, tctl);
-
- netif_carrier_on(netdev);
- netif_wake_queue(netdev);
- mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
- adapter->smartspeed = 0;
- } else {
- /* make sure the receive unit is started */
- if (hw->rx_needs_kicking) {
- u32 rctl = er32(RCTL);
- ew32(RCTL, rctl | E1000_RCTL_EN);
- }
- }
- } else {
- if (netif_carrier_ok(netdev)) {
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- printk(KERN_INFO "e1000: %s NIC Link is Down\n",
- netdev->name);
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
-
- /* 80003ES2LAN workaround--
- * For packet buffer work-around on link down event;
- * disable receives in the ISR and
- * reset device here in the watchdog
- */
- if (hw->mac_type == e1000_80003es2lan)
- /* reset device */
- schedule_work(&adapter->reset_task);
- }
-
- e1000_smartspeed(adapter);
- }
-
- e1000_update_stats(adapter);
-
- hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
- adapter->tpt_old = adapter->stats.tpt;
- 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(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). */
- adapter->tx_timeout_count++;
- schedule_work(&adapter->reset_task);
- }
- }
-
- /* Cause software interrupt to ensure rx ring is cleaned */
- ew32(ICS, E1000_ICS_RXDMT0);
-
- /* Force detection of hung controller every watchdog period */
- adapter->detect_tx_hung = true;
-
- /* With 82571 controllers, LAA may be overwritten due to controller
- * reset from the other port. Set the appropriate LAA in RAR[0] */
- if (hw->mac_type == e1000_82571 && hw->laa_is_present)
- e1000_rar_set(hw, hw->mac_addr, 0);
-
- /* Reset the timer */
- mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
-}
-
-enum latency_range {
- lowest_latency = 0,
- low_latency = 1,
- bulk_latency = 2,
- latency_invalid = 255
-};
-
-/**
- * e1000_update_itr - update the dynamic ITR value based on statistics
- * Stores a new ITR value based on packets and byte
- * counts during the last interrupt. The advantage of per interrupt
- * computation is faster updates and more accurate ITR for the current
- * traffic pattern. Constants in this function were computed
- * based on theoretical maximum wire speed and thresholds were set based
- * on testing data as well as attempting to minimize response time
- * while increasing bulk throughput.
- * this functionality is controlled by the InterruptThrottleRate module
- * parameter (see e1000_param.c)
- * @adapter: pointer to adapter
- * @itr_setting: current adapter->itr
- * @packets: the number of packets during this measurement interval
- * @bytes: the number of bytes during this measurement interval
- **/
-static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
- u16 itr_setting, int packets, int bytes)
-{
- unsigned int retval = itr_setting;
- struct e1000_hw *hw = &adapter->hw;
-
- if (unlikely(hw->mac_type < e1000_82540))
- goto update_itr_done;
-
- if (packets == 0)
- goto update_itr_done;
-
- switch (itr_setting) {
- case lowest_latency:
- /* jumbo frames get bulk treatment*/
- if (bytes/packets > 8000)
- retval = bulk_latency;
- else if ((packets < 5) && (bytes > 512))
- retval = low_latency;
- break;
- case low_latency: /* 50 usec aka 20000 ints/s */
- if (bytes > 10000) {
- /* jumbo frames need bulk latency setting */
- if (bytes/packets > 8000)
- retval = bulk_latency;
- else if ((packets < 10) || ((bytes/packets) > 1200))
- retval = bulk_latency;
- else if ((packets > 35))
- retval = lowest_latency;
- } else if (bytes/packets > 2000)
- retval = bulk_latency;
- else if (packets <= 2 && bytes < 512)
- retval = lowest_latency;
- break;
- case bulk_latency: /* 250 usec aka 4000 ints/s */
- if (bytes > 25000) {
- if (packets > 35)
- retval = low_latency;
- } else if (bytes < 6000) {
- retval = low_latency;
- }
- break;
- }
-
-update_itr_done:
- return retval;
-}
-
-static void e1000_set_itr(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 current_itr;
- u32 new_itr = adapter->itr;
-
- if (unlikely(hw->mac_type < e1000_82540))
- return;
-
- /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
- if (unlikely(adapter->link_speed != SPEED_1000)) {
- current_itr = 0;
- new_itr = 4000;
- goto set_itr_now;
- }
-
- adapter->tx_itr = e1000_update_itr(adapter,
- adapter->tx_itr,
- adapter->total_tx_packets,
- adapter->total_tx_bytes);
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
- adapter->tx_itr = low_latency;
-
- adapter->rx_itr = e1000_update_itr(adapter,
- adapter->rx_itr,
- adapter->total_rx_packets,
- adapter->total_rx_bytes);
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
- adapter->rx_itr = low_latency;
-
- current_itr = max(adapter->rx_itr, adapter->tx_itr);
-
- switch (current_itr) {
- /* counts and packets in update_itr are dependent on these numbers */
- case lowest_latency:
- new_itr = 70000;
- break;
- case low_latency:
- new_itr = 20000; /* aka hwitr = ~200 */
- break;
- case bulk_latency:
- new_itr = 4000;
- break;
- default:
- break;
- }
-
-set_itr_now:
- if (new_itr != adapter->itr) {
- /* this attempts to bias the interrupt rate towards Bulk
- * by adding intermediate steps when interrupt rate is
- * increasing */
- new_itr = new_itr > adapter->itr ?
- min(adapter->itr + (new_itr >> 2), new_itr) :
- new_itr;
- adapter->itr = new_itr;
- ew32(ITR, 1000000000 / (new_itr * 256));
- }
-
- return;
-}
-
-#define E1000_TX_FLAGS_CSUM 0x00000001
-#define E1000_TX_FLAGS_VLAN 0x00000002
-#define E1000_TX_FLAGS_TSO 0x00000004
-#define E1000_TX_FLAGS_IPV4 0x00000008
-#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
-#define E1000_TX_FLAGS_VLAN_SHIFT 16
-
-static int e1000_tso(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
-{
- struct e1000_context_desc *context_desc;
- struct e1000_buffer *buffer_info;
- unsigned int i;
- u32 cmd_length = 0;
- u16 ipcse = 0, tucse, mss;
- u8 ipcss, ipcso, tucss, tucso, hdr_len;
- int err;
-
- if (skb_is_gso(skb)) {
- if (skb_header_cloned(skb)) {
- err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (err)
- return err;
- }
-
- hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
- mss = skb_shinfo(skb)->gso_size;
- if (skb->protocol == htons(ETH_P_IP)) {
- struct iphdr *iph = ip_hdr(skb);
- iph->tot_len = 0;
- iph->check = 0;
- tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
- iph->daddr, 0,
- IPPROTO_TCP,
- 0);
- cmd_length = E1000_TXD_CMD_IP;
- ipcse = skb_transport_offset(skb) - 1;
- } else if (skb->protocol == htons(ETH_P_IPV6)) {
- ipv6_hdr(skb)->payload_len = 0;
- tcp_hdr(skb)->check =
- ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- ipcse = 0;
- }
- ipcss = skb_network_offset(skb);
- ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
- tucss = skb_transport_offset(skb);
- tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
- tucse = 0;
-
- cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
- E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
-
- i = tx_ring->next_to_use;
- context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
- buffer_info = &tx_ring->buffer_info[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);
-
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
-
- if (++i == tx_ring->count) i = 0;
- tx_ring->next_to_use = i;
-
- return true;
- }
- return false;
-}
-
-static bool e1000_tx_csum(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
-{
- struct e1000_context_desc *context_desc;
- struct e1000_buffer *buffer_info;
- unsigned int i;
- u8 css;
- u32 cmd_len = E1000_TXD_CMD_DEXT;
-
- if (skb->ip_summed != CHECKSUM_PARTIAL)
- return false;
-
- switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- if (ip_hdr(skb)->protocol == IPPROTO_TCP)
- cmd_len |= E1000_TXD_CMD_TCP;
- break;
- case __constant_htons(ETH_P_IPV6):
- /* XXX not handling all IPV6 headers */
- if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
- cmd_len |= E1000_TXD_CMD_TCP;
- break;
- default:
- if (unlikely(net_ratelimit()))
- DPRINTK(DRV, WARNING,
- "checksum_partial proto=%x!\n", skb->protocol);
- break;
- }
-
- css = skb_transport_offset(skb);
-
- i = tx_ring->next_to_use;
- buffer_info = &tx_ring->buffer_info[i];
- context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
-
- context_desc->lower_setup.ip_config = 0;
- context_desc->upper_setup.tcp_fields.tucss = css;
- context_desc->upper_setup.tcp_fields.tucso =
- css + skb->csum_offset;
- context_desc->upper_setup.tcp_fields.tucse = 0;
- context_desc->tcp_seg_setup.data = 0;
- context_desc->cmd_and_length = cpu_to_le32(cmd_len);
-
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
-
- if (unlikely(++i == tx_ring->count)) i = 0;
- tx_ring->next_to_use = i;
-
- return true;
-}
-
-#define E1000_MAX_TXD_PWR 12
-#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
-
-static int e1000_tx_map(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring,
- struct sk_buff *skb, unsigned int first,
- unsigned int max_per_txd, unsigned int nr_frags,
- unsigned int mss)
-{
- struct e1000_hw *hw = &adapter->hw;
- 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);
- /* Workaround for Controller erratum --
- * descriptor for non-tso packet in a linear SKB that follows a
- * tso gets written back prematurely before the data is fully
- * DMA'd to the controller */
- if (!skb->data_len && tx_ring->last_tx_tso &&
- !skb_is_gso(skb)) {
- tx_ring->last_tx_tso = 0;
- size -= 4;
- }
-
- /* 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;
- /* work-around for errata 10 and it applies
- * to all controllers in PCI-X mode
- * The fix is to make sure that the first descriptor of a
- * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
- */
- if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
- (size > 2015) && count == 0))
- size = 2015;
-
- /* 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;
- buffer_info->next_to_watch = i;
-
- 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);
- /* 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;
- /* 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;
- buffer_info->next_to_watch = i;
-
- 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 void e1000_tx_queue(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring, int tx_flags,
- int count)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_tx_desc *tx_desc = NULL;
- struct e1000_buffer *buffer_info;
- u32 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_TXSM << 8;
-
- if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
- txd_upper |= E1000_TXD_POPTS_IXSM << 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;
- writel(i, hw->hw_addr + tx_ring->tdt);
- /* we need this if more than one processor can write to our tail
- * at a time, it syncronizes IO on IA64/Altix systems */
- mmiowb();
-}
-
-/**
- * 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 int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
- struct sk_buff *skb)
-{
- u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
- u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
-
- skb_fifo_len = ALIGN(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 MINIMUM_DHCP_PACKET_SIZE 282
-static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
- struct sk_buff *skb)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 length, offset;
- if (vlan_tx_tag_present(skb)) {
- if (!((vlan_tx_tag_get(skb) == hw->mng_cookie.vlan_id) &&
- ( hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
- return 0;
- }
- if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
- struct ethhdr *eth = (struct ethhdr *)skb->data;
- if ((htons(ETH_P_IP) == eth->h_proto)) {
- const struct iphdr *ip =
- (struct iphdr *)((u8 *)skb->data+14);
- if (IPPROTO_UDP == ip->protocol) {
- struct udphdr *udp =
- (struct udphdr *)((u8 *)ip +
- (ip->ihl << 2));
- if (ntohs(udp->dest) == 67) {
- offset = (u8 *)udp + 8 - skb->data;
- length = skb->len - offset;
-
- return e1000_mng_write_dhcp_info(hw,
- (u8 *)udp + 8,
- length);
- }
- }
- }
- }
- return 0;
-}
-
-static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_tx_ring *tx_ring = adapter->tx_ring;
-
- netif_stop_queue(netdev);
- /* Herbert's original patch had:
- * smp_mb__after_netif_stop_queue();
- * but since that doesn't exist yet, just open code it. */
- smp_mb();
-
- /* We need to check again in a case another CPU has just
- * made room available. */
- if (likely(E1000_DESC_UNUSED(tx_ring) < size))
- return -EBUSY;
-
- /* A reprieve! */
- netif_start_queue(netdev);
- ++adapter->restart_queue;
- return 0;
-}
-
-static int e1000_maybe_stop_tx(struct net_device *netdev,
- struct e1000_tx_ring *tx_ring, int size)
-{
- if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
- return 0;
- return __e1000_maybe_stop_tx(netdev, size);
-}
-
-#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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_tx_ring *tx_ring;
- 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 - skb->data_len;
- unsigned long flags;
- unsigned int nr_frags;
- unsigned int mss;
- int count = 0;
- int tso;
- unsigned int f;
-
- /* This goes back to the question of how to logically map a tx queue
- * to a flow. Right now, performance is impacted slightly negatively
- * if using multiple tx queues. If the stack breaks away from a
- * single qdisc implementation, we can look at this again. */
- tx_ring = adapter->tx_ring;
-
- if (unlikely(skb->len <= 0)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- /* 82571 and newer doesn't need the workaround that limited descriptor
- * length to 4kB */
- if (hw->mac_type >= e1000_82571)
- max_per_txd = 8192;
-
- mss = skb_shinfo(skb)->gso_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) {
- u8 hdr_len;
- max_per_txd = min(mss << 2, max_per_txd);
- max_txd_pwr = fls(max_per_txd) - 1;
-
- /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
- * points to just header, pull a few bytes of payload from
- * frags into skb->data */
- hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
- if (skb->data_len && hdr_len == len) {
- switch (hw->mac_type) {
- unsigned int pull_size;
- case e1000_82544:
- /* Make sure we have room to chop off 4 bytes,
- * and that the end alignment will work out to
- * this hardware's requirements
- * NOTE: this is a TSO only workaround
- * if end byte alignment not correct move us
- * into the next dword */
- if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4)
- break;
- /* fall through */
- case e1000_82571:
- case e1000_82572:
- case e1000_82573:
- case e1000_ich8lan:
- pull_size = min((unsigned int)4, skb->data_len);
- if (!__pskb_pull_tail(skb, pull_size)) {
- DPRINTK(DRV, ERR,
- "__pskb_pull_tail failed.\n");
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
- len = skb->len - skb->data_len;
- break;
- default:
- /* do nothing */
- break;
- }
- }
- }
-
- /* reserve a descriptor for the offload context */
- if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
- count++;
- count++;
-
- /* Controller Erratum workaround */
- if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
- count++;
-
- count += TXD_USE_COUNT(len, max_txd_pwr);
-
- if (adapter->pcix_82544)
- count++;
-
- /* work-around for errata 10 and it applies to all controllers
- * in PCI-X mode, so add one more descriptor to the count
- */
- if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
- (len > 2015)))
- 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;
-
-
- if (hw->tx_pkt_filtering &&
- (hw->mac_type == e1000_82573))
- e1000_transfer_dhcp_info(adapter, skb);
-
- if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags))
- /* Collision - tell upper layer to requeue */
- return NETDEV_TX_LOCKED;
-
- /* need: count + 2 desc gap to keep tail from touching
- * head, otherwise try next time */
- if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) {
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
- return NETDEV_TX_BUSY;
- }
-
- if (unlikely(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 + 1);
- spin_unlock_irqrestore(&tx_ring->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 = tx_ring->next_to_use;
-
- tso = e1000_tso(adapter, tx_ring, skb);
- if (tso < 0) {
- dev_kfree_skb_any(skb);
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
- return NETDEV_TX_OK;
- }
-
- if (likely(tso)) {
- tx_ring->last_tx_tso = 1;
- tx_flags |= E1000_TX_FLAGS_TSO;
- } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
- tx_flags |= E1000_TX_FLAGS_CSUM;
-
- /* Old method was to assume IPv4 packet by default if TSO was enabled.
- * 82571 hardware supports TSO capabilities for IPv6 as well...
- * no longer assume, we must. */
- if (likely(skb->protocol == htons(ETH_P_IP)))
- tx_flags |= E1000_TX_FLAGS_IPV4;
-
- e1000_tx_queue(adapter, tx_ring, tx_flags,
- e1000_tx_map(adapter, tx_ring, skb, first,
- max_per_txd, nr_frags, mss));
-
- netdev->trans_start = jiffies;
-
- /* Make sure there is space in the ring for the next send. */
- e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
-
- spin_unlock_irqrestore(&tx_ring->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(netdev);
-
- /* Do the reset outside of interrupt context */
- adapter->tx_timeout_count++;
- schedule_work(&adapter->reset_task);
-}
-
-static void e1000_reset_task(struct work_struct *work)
-{
- struct e1000_adapter *adapter =
- container_of(work, struct e1000_adapter, reset_task);
-
- e1000_reinit_locked(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(netdev);
-
- /* only return the current stats */
- 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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
- u16 eeprom_data = 0;
-
- if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
- (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
- return -EINVAL;
- }
-
- /* Adapter-specific max frame size limits. */
- switch (hw->mac_type) {
- case e1000_undefined ... e1000_82542_rev2_1:
- case e1000_ich8lan:
- if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
- DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
- return -EINVAL;
- }
- break;
- case e1000_82573:
- /* Jumbo Frames not supported if:
- * - this is not an 82573L device
- * - ASPM is enabled in any way (0x1A bits 3:2) */
- e1000_read_eeprom(hw, EEPROM_INIT_3GIO_3, 1,
- &eeprom_data);
- if ((hw->device_id != E1000_DEV_ID_82573L) ||
- (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
- if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
- DPRINTK(PROBE, ERR,
- "Jumbo Frames not supported.\n");
- return -EINVAL;
- }
- break;
- }
- /* ERT will be enabled later to enable wire speed receives */
-
- /* fall through to get support */
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
-#define MAX_STD_JUMBO_FRAME_SIZE 9234
- if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
- DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
- return -EINVAL;
- }
- break;
- default:
- /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
- break;
- }
-
- /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
- * means we reserve 2 more, this pushes us to allocate from the next
- * larger slab size
- * i.e. RXBUFFER_2048 --> size-4096 slab */
-
- if (max_frame <= E1000_RXBUFFER_256)
- adapter->rx_buffer_len = E1000_RXBUFFER_256;
- else if (max_frame <= E1000_RXBUFFER_512)
- adapter->rx_buffer_len = E1000_RXBUFFER_512;
- else if (max_frame <= E1000_RXBUFFER_1024)
- adapter->rx_buffer_len = E1000_RXBUFFER_1024;
- else if (max_frame <= E1000_RXBUFFER_2048)
- adapter->rx_buffer_len = E1000_RXBUFFER_2048;
- 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 if (max_frame <= E1000_RXBUFFER_16384)
- adapter->rx_buffer_len = E1000_RXBUFFER_16384;
-
- /* adjust allocation if LPE protects us, and we aren't using SBP */
- if (!hw->tbi_compatibility_on &&
- ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
- (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
- adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
-
- netdev->mtu = new_mtu;
- hw->max_frame_size = max_frame;
-
- if (netif_running(netdev))
- e1000_reinit_locked(adapter);
-
- 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;
- struct pci_dev *pdev = adapter->pdev;
- unsigned long flags;
- u16 phy_tmp;
-
-#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
-
- /*
- * Prevent stats update while adapter is being reset, or if the pci
- * connection is down.
- */
- if (adapter->link_speed == 0)
- return;
- if (pci_channel_offline(pdev))
- return;
-
- spin_lock_irqsave(&adapter->stats_lock, flags);
-
- /* these counters are modified from e1000_tbi_adjust_stats,
- * called from the interrupt context, so they must only
- * be written while holding adapter->stats_lock
- */
-
- adapter->stats.crcerrs += er32(CRCERRS);
- adapter->stats.gprc += er32(GPRC);
- adapter->stats.gorcl += er32(GORCL);
- adapter->stats.gorch += er32(GORCH);
- adapter->stats.bprc += er32(BPRC);
- adapter->stats.mprc += er32(MPRC);
- adapter->stats.roc += er32(ROC);
-
- if (hw->mac_type != e1000_ich8lan) {
- adapter->stats.prc64 += er32(PRC64);
- adapter->stats.prc127 += er32(PRC127);
- adapter->stats.prc255 += er32(PRC255);
- adapter->stats.prc511 += er32(PRC511);
- adapter->stats.prc1023 += er32(PRC1023);
- adapter->stats.prc1522 += er32(PRC1522);
- }
-
- adapter->stats.symerrs += er32(SYMERRS);
- adapter->stats.mpc += er32(MPC);
- adapter->stats.scc += er32(SCC);
- adapter->stats.ecol += er32(ECOL);
- adapter->stats.mcc += er32(MCC);
- adapter->stats.latecol += er32(LATECOL);
- adapter->stats.dc += er32(DC);
- adapter->stats.sec += er32(SEC);
- adapter->stats.rlec += er32(RLEC);
- adapter->stats.xonrxc += er32(XONRXC);
- adapter->stats.xontxc += er32(XONTXC);
- adapter->stats.xoffrxc += er32(XOFFRXC);
- adapter->stats.xofftxc += er32(XOFFTXC);
- adapter->stats.fcruc += er32(FCRUC);
- adapter->stats.gptc += er32(GPTC);
- adapter->stats.gotcl += er32(GOTCL);
- adapter->stats.gotch += er32(GOTCH);
- adapter->stats.rnbc += er32(RNBC);
- adapter->stats.ruc += er32(RUC);
- adapter->stats.rfc += er32(RFC);
- adapter->stats.rjc += er32(RJC);
- adapter->stats.torl += er32(TORL);
- adapter->stats.torh += er32(TORH);
- adapter->stats.totl += er32(TOTL);
- adapter->stats.toth += er32(TOTH);
- adapter->stats.tpr += er32(TPR);
-
- if (hw->mac_type != e1000_ich8lan) {
- adapter->stats.ptc64 += er32(PTC64);
- adapter->stats.ptc127 += er32(PTC127);
- adapter->stats.ptc255 += er32(PTC255);
- adapter->stats.ptc511 += er32(PTC511);
- adapter->stats.ptc1023 += er32(PTC1023);
- adapter->stats.ptc1522 += er32(PTC1522);
- }
-
- adapter->stats.mptc += er32(MPTC);
- adapter->stats.bptc += er32(BPTC);
-
- /* used for adaptive IFS */
-
- hw->tx_packet_delta = er32(TPT);
- adapter->stats.tpt += hw->tx_packet_delta;
- hw->collision_delta = er32(COLC);
- adapter->stats.colc += hw->collision_delta;
-
- if (hw->mac_type >= e1000_82543) {
- adapter->stats.algnerrc += er32(ALGNERRC);
- adapter->stats.rxerrc += er32(RXERRC);
- adapter->stats.tncrs += er32(TNCRS);
- adapter->stats.cexterr += er32(CEXTERR);
- adapter->stats.tsctc += er32(TSCTC);
- adapter->stats.tsctfc += er32(TSCTFC);
- }
- if (hw->mac_type > e1000_82547_rev_2) {
- adapter->stats.iac += er32(IAC);
- adapter->stats.icrxoc += er32(ICRXOC);
-
- if (hw->mac_type != e1000_ich8lan) {
- adapter->stats.icrxptc += er32(ICRXPTC);
- adapter->stats.icrxatc += er32(ICRXATC);
- adapter->stats.ictxptc += er32(ICTXPTC);
- adapter->stats.ictxatc += er32(ICTXATC);
- adapter->stats.ictxqec += er32(ICTXQEC);
- adapter->stats.ictxqmtc += er32(ICTXQMTC);
- adapter->stats.icrxdmtc += er32(ICRXDMTC);
- }
- }
-
- /* Fill out the OS statistics structure */
- adapter->net_stats.multicast = adapter->stats.mprc;
- adapter->net_stats.collisions = adapter->stats.colc;
-
- /* Rx Errors */
-
- /* RLEC on some newer hardware can be incorrect so build
- * our own version based on RUC and ROC */
- adapter->net_stats.rx_errors = adapter->stats.rxerrc +
- adapter->stats.crcerrs + adapter->stats.algnerrc +
- adapter->stats.ruc + adapter->stats.roc +
- adapter->stats.cexterr;
- adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
- adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
- adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
- adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
- adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
-
- /* Tx Errors */
- adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
- adapter->net_stats.tx_errors = adapter->stats.txerrc;
- 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;
- if (hw->bad_tx_carr_stats_fd &&
- adapter->link_duplex == FULL_DUPLEX) {
- adapter->net_stats.tx_carrier_errors = 0;
- adapter->stats.tncrs = 0;
- }
-
- /* 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;
- }
-
- /* Management Stats */
- if (hw->has_smbus) {
- adapter->stats.mgptc += er32(MGTPTC);
- adapter->stats.mgprc += er32(MGTPRC);
- adapter->stats.mgpdc += er32(MGTPDC);
- }
-
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
-}
-
-/**
- * e1000_intr_msi - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- **/
-
-static irqreturn_t e1000_intr_msi(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 icr = er32(ICR);
-
- /* in NAPI mode read ICR disables interrupts using IAM */
-
- if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
- hw->get_link_status = 1;
- /* 80003ES2LAN workaround-- For packet buffer work-around on
- * link down event; disable receives here in the ISR and reset
- * adapter in watchdog */
- if (netif_carrier_ok(netdev) &&
- (hw->mac_type == e1000_80003es2lan)) {
- /* disable receives */
- u32 rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
- }
- /* guard against interrupt when we're going down */
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
- if (likely(netif_rx_schedule_prep(&adapter->napi))) {
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __netif_rx_schedule(&adapter->napi);
- } else
- e1000_irq_enable(adapter);
-
- return IRQ_HANDLED;
-}
-
-/**
- * e1000_intr - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- **/
-
-static irqreturn_t e1000_intr(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl, icr = er32(ICR);
-
- if (unlikely((!icr) || test_bit(__E1000_RESETTING, &adapter->flags)))
- return IRQ_NONE; /* Not our interrupt */
-
- /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
- * not set, then the adapter didn't send an interrupt */
- if (unlikely(hw->mac_type >= e1000_82571 &&
- !(icr & E1000_ICR_INT_ASSERTED)))
- return IRQ_NONE;
-
- /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
- * need for the IMC write */
-
- if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
- hw->get_link_status = 1;
- /* 80003ES2LAN workaround--
- * For packet buffer work-around on link down event;
- * disable receives here in the ISR and
- * reset adapter in watchdog
- */
- if (netif_carrier_ok(netdev) &&
- (hw->mac_type == e1000_80003es2lan)) {
- /* disable receives */
- rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
- }
- /* guard against interrupt when we're going down */
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
- if (unlikely(hw->mac_type < e1000_82571)) {
- /* disable interrupts, without the synchronize_irq bit */
- ew32(IMC, ~0);
- E1000_WRITE_FLUSH();
- }
- if (likely(netif_rx_schedule_prep(&adapter->napi))) {
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __netif_rx_schedule(&adapter->napi);
- } else
- /* this really should not happen! if it does it is basically a
- * bug, but not a hard error, so enable ints and continue */
- e1000_irq_enable(adapter);
-
- return IRQ_HANDLED;
-}
-
-/**
- * e1000_clean - NAPI Rx polling callback
- * @adapter: board private structure
- **/
-static int e1000_clean(struct napi_struct *napi, int budget)
-{
- struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
- struct net_device *poll_dev = adapter->netdev;
- int tx_cleaned = 0, work_done = 0;
-
- adapter = netdev_priv(poll_dev);
-
- /* e1000_clean is called per-cpu. This lock protects
- * tx_ring[0] from being cleaned by multiple cpus
- * simultaneously. A failure obtaining the lock means
- * tx_ring[0] is currently being cleaned anyway. */
- if (spin_trylock(&adapter->tx_queue_lock)) {
- tx_cleaned = e1000_clean_tx_irq(adapter,
- &adapter->tx_ring[0]);
- spin_unlock(&adapter->tx_queue_lock);
- }
-
- adapter->clean_rx(adapter, &adapter->rx_ring[0],
- &work_done, budget);
-
- if (tx_cleaned)
- work_done = budget;
-
- /* If budget not fully consumed, exit the polling mode */
- if (work_done < budget) {
- if (likely(adapter->itr_setting & 3))
- e1000_set_itr(adapter);
- netif_rx_complete(napi);
- e1000_irq_enable(adapter);
- }
-
- return work_done;
-}
-
-/**
- * e1000_clean_tx_irq - Reclaim resources after transmit completes
- * @adapter: board private structure
- **/
-static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct e1000_tx_desc *tx_desc, *eop_desc;
- struct e1000_buffer *buffer_info;
- unsigned int i, eop;
- unsigned int count = 0;
- bool cleaned = false;
- unsigned int total_tx_bytes=0, total_tx_packets=0;
-
- 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)) {
- for (cleaned = false; !cleaned; ) {
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- buffer_info = &tx_ring->buffer_info[i];
- cleaned = (i == eop);
-
- if (cleaned) {
- struct sk_buff *skb = buffer_info->skb;
- unsigned int segs, bytecount;
- segs = skb_shinfo(skb)->gso_segs ?: 1;
- /* multiply data chunks by size of headers */
- bytecount = ((segs - 1) * skb_headlen(skb)) +
- skb->len;
- total_tx_packets += segs;
- total_tx_bytes += bytecount;
- }
- e1000_unmap_and_free_tx_resource(adapter, buffer_info);
- tx_desc->upper.data = 0;
-
- 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);
-#define E1000_TX_WEIGHT 64
- /* weight of a sort for tx, to avoid endless transmit cleanup */
- if (count++ == E1000_TX_WEIGHT)
- break;
- }
-
- tx_ring->next_to_clean = i;
-
-#define TX_WAKE_THRESHOLD 32
- if (unlikely(cleaned && netif_carrier_ok(netdev) &&
- E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
- /* Make sure that anybody stopping the queue after this
- * sees the new next_to_clean.
- */
- smp_mb();
- if (netif_queue_stopped(netdev)) {
- netif_wake_queue(netdev);
- ++adapter->restart_queue;
- }
- }
-
- 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[eop].dma &&
- time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
- (adapter->tx_timeout_factor * HZ))
- && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
-
- /* detected Tx unit hang */
- DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
- " Tx Queue <%lu>\n"
- " TDH <%x>\n"
- " TDT <%x>\n"
- " next_to_use <%x>\n"
- " next_to_clean <%x>\n"
- "buffer_info[next_to_clean]\n"
- " time_stamp <%lx>\n"
- " next_to_watch <%x>\n"
- " jiffies <%lx>\n"
- " next_to_watch.status <%x>\n",
- (unsigned long)((tx_ring - adapter->tx_ring) /
- sizeof(struct e1000_tx_ring)),
- readl(hw->hw_addr + tx_ring->tdh),
- readl(hw->hw_addr + tx_ring->tdt),
- tx_ring->next_to_use,
- tx_ring->next_to_clean,
- tx_ring->buffer_info[eop].time_stamp,
- eop,
- jiffies,
- eop_desc->upper.fields.status);
- netif_stop_queue(netdev);
- }
- }
- adapter->total_tx_bytes += total_tx_bytes;
- adapter->total_tx_packets += total_tx_packets;
- adapter->net_stats.tx_bytes += total_tx_bytes;
- adapter->net_stats.tx_packets += total_tx_packets;
- return cleaned;
-}
-
-/**
- * e1000_rx_checksum - Receive Checksum Offload for 82543
- * @adapter: board private structure
- * @status_err: receive descriptor status and error fields
- * @csum: receive descriptor csum field
- * @sk_buff: socket buffer with received data
- **/
-
-static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
- u32 csum, struct sk_buff *skb)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 status = (u16)status_err;
- u8 errors = (u8)(status_err >> 24);
- skb->ip_summed = CHECKSUM_NONE;
-
- /* 82543 or newer only */
- if (unlikely(hw->mac_type < e1000_82543)) return;
- /* Ignore Checksum bit is set */
- if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
- /* TCP/UDP checksum error bit is set */
- if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
- /* let the stack verify checksum errors */
- adapter->hw_csum_err++;
- return;
- }
- /* TCP/UDP Checksum has not been calculated */
- if (hw->mac_type <= e1000_82547_rev_2) {
- if (!(status & E1000_RXD_STAT_TCPCS))
- return;
- } else {
- if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
- return;
- }
- /* It must be a TCP or UDP packet with a valid checksum */
- if (likely(status & E1000_RXD_STAT_TCPCS)) {
- /* TCP checksum is good */
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- } else if (hw->mac_type > e1000_82547_rev_2) {
- /* IP fragment with UDP payload */
- /* Hardware complements the payload checksum, so we undo it
- * and then put the value in host order for further stack use.
- */
- __sum16 sum = (__force __sum16)htons(csum);
- skb->csum = csum_unfold(~sum);
- skb->ip_summed = CHECKSUM_COMPLETE;
- }
- adapter->hw_csum_good++;
-}
-
-/**
- * e1000_clean_rx_irq - Send received data up the network stack; legacy
- * @adapter: board private structure
- **/
-static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring,
- int *work_done, int work_to_do)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_rx_desc *rx_desc, *next_rxd;
- struct e1000_buffer *buffer_info, *next_buffer;
- unsigned long flags;
- u32 length;
- u8 last_byte;
- unsigned int i;
- int cleaned_count = 0;
- bool cleaned = false;
- unsigned int total_rx_bytes=0, total_rx_packets=0;
-
- i = rx_ring->next_to_clean;
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- buffer_info = &rx_ring->buffer_info[i];
-
- while (rx_desc->status & E1000_RXD_STAT_DD) {
- struct sk_buff *skb;
- u8 status;
-
- if (*work_done >= work_to_do)
- break;
- (*work_done)++;
-
- status = rx_desc->status;
- skb = buffer_info->skb;
- buffer_info->skb = NULL;
-
- prefetch(skb->data - NET_IP_ALIGN);
-
- if (++i == rx_ring->count) i = 0;
- next_rxd = E1000_RX_DESC(*rx_ring, i);
- prefetch(next_rxd);
-
- next_buffer = &rx_ring->buffer_info[i];
-
- cleaned = true;
- cleaned_count++;
- pci_unmap_single(pdev,
- buffer_info->dma,
- buffer_info->length,
- PCI_DMA_FROMDEVICE);
-
- length = le16_to_cpu(rx_desc->length);
-
- if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
- /* All receives must fit into a single buffer */
- E1000_DBG("%s: Receive packet consumed multiple"
- " buffers\n", netdev->name);
- /* recycle */
- buffer_info->skb = skb;
- goto next_desc;
- }
-
- if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
- last_byte = *(skb->data + length - 1);
- if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
- last_byte)) {
- spin_lock_irqsave(&adapter->stats_lock, flags);
- e1000_tbi_adjust_stats(hw, &adapter->stats,
- length, skb->data);
- spin_unlock_irqrestore(&adapter->stats_lock,
- flags);
- length--;
- } else {
- /* recycle */
- buffer_info->skb = skb;
- goto next_desc;
- }
- }
-
- /* adjust length to remove Ethernet CRC, this must be
- * done after the TBI_ACCEPT workaround above */
- length -= 4;
-
- /* probably a little skewed due to removing CRC */
- total_rx_bytes += length;
- total_rx_packets++;
-
- /* code added for copybreak, this should improve
- * performance for small packets with large amounts
- * of reassembly being done in the stack */
- if (length < copybreak) {
- struct sk_buff *new_skb =
- netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
- if (new_skb) {
- skb_reserve(new_skb, NET_IP_ALIGN);
- skb_copy_to_linear_data_offset(new_skb,
- -NET_IP_ALIGN,
- (skb->data -
- NET_IP_ALIGN),
- (length +
- NET_IP_ALIGN));
- /* save the skb in buffer_info as good */
- buffer_info->skb = skb;
- skb = new_skb;
- }
- /* else just continue with the old one */
- }
- /* end copybreak code */
- skb_put(skb, length);
-
- /* Receive Checksum Offload */
- e1000_rx_checksum(adapter,
- (u32)(status) |
- ((u32)(rx_desc->errors) << 24),
- le16_to_cpu(rx_desc->csum), skb);
-
- skb->protocol = eth_type_trans(skb, netdev);
-
- if (unlikely(adapter->vlgrp &&
- (status & E1000_RXD_STAT_VP))) {
- vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
- le16_to_cpu(rx_desc->special));
- } else {
- netif_receive_skb(skb);
- }
-
-next_desc:
- rx_desc->status = 0;
-
- /* return some buffers to hardware, one at a time is too slow */
- if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
- adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
- cleaned_count = 0;
- }
-
- /* use prefetched values */
- rx_desc = next_rxd;
- buffer_info = next_buffer;
- }
- rx_ring->next_to_clean = i;
-
- cleaned_count = E1000_DESC_UNUSED(rx_ring);
- if (cleaned_count)
- adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
-
- adapter->total_rx_packets += total_rx_packets;
- adapter->total_rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_bytes += total_rx_bytes;
- adapter->net_stats.rx_packets += total_rx_packets;
- return cleaned;
-}
-
-/**
- * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
- * @adapter: address of board private structure
- **/
-
-static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
- struct e1000_rx_ring *rx_ring,
- int cleaned_count)
-{
- struct e1000_hw *hw = &adapter->hw;
- 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;
- unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
-
- i = rx_ring->next_to_use;
- buffer_info = &rx_ring->buffer_info[i];
-
- while (cleaned_count--) {
- skb = buffer_info->skb;
- if (skb) {
- skb_trim(skb, 0);
- goto map_skb;
- }
-
- skb = netdev_alloc_skb(netdev, bufsz);
- if (unlikely(!skb)) {
- /* Better luck next round */
- adapter->alloc_rx_buff_failed++;
- break;
- }
-
- /* Fix for errata 23, can't 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 = netdev_alloc_skb(netdev, bufsz);
- /* Failed allocation, critical failure */
- 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 */
- }
-
- /* Use new allocation */
- 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);
-
- buffer_info->skb = skb;
- buffer_info->length = adapter->rx_buffer_len;
-map_skb:
- buffer_info->dma = pci_map_single(pdev,
- skb->data,
- adapter->rx_buffer_len,
- PCI_DMA_FROMDEVICE);
-
- /* Fix for errata 23, can't 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 %p\n",
- adapter->rx_buffer_len,
- (void *)(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 == rx_ring->count))
- i = 0;
- buffer_info = &rx_ring->buffer_info[i];
- }
-
- if (likely(rx_ring->next_to_use != i)) {
- rx_ring->next_to_use = i;
- if (unlikely(i-- == 0))
- i = (rx_ring->count - 1);
-
- /* 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();
- writel(i, hw->hw_addr + rx_ring->rdt);
- }
-}
-
-/**
- * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
- * @adapter:
- **/
-
-static void e1000_smartspeed(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 phy_status;
- u16 phy_ctrl;
-
- if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
- !(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(hw, PHY_1000T_STATUS, &phy_status);
- if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
- e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
- if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
- e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
- if (phy_ctrl & CR_1000T_MS_ENABLE) {
- phy_ctrl &= ~CR_1000T_MS_ENABLE;
- e1000_write_phy_reg(hw, PHY_1000T_CTRL,
- phy_ctrl);
- adapter->smartspeed++;
- if (!e1000_phy_setup_autoneg(hw) &&
- !e1000_read_phy_reg(hw, PHY_CTRL,
- &phy_ctrl)) {
- phy_ctrl |= (MII_CR_AUTO_NEG_EN |
- MII_CR_RESTART_AUTO_NEG);
- e1000_write_phy_reg(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(hw, PHY_1000T_CTRL, &phy_ctrl);
- phy_ctrl |= CR_1000T_MS_ENABLE;
- e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
- if (!e1000_phy_setup_autoneg(hw) &&
- !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
- phy_ctrl |= (MII_CR_AUTO_NEG_EN |
- MII_CR_RESTART_AUTO_NEG);
- e1000_write_phy_reg(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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct mii_ioctl_data *data = if_mii(ifr);
- int retval;
- u16 mii_reg;
- u16 spddplx;
- unsigned long flags;
-
- if (hw->media_type != e1000_media_type_copper)
- return -EOPNOTSUPP;
-
- switch (cmd) {
- case SIOCGMIIPHY:
- data->phy_id = hw->phy_addr;
- break;
- case SIOCGMIIREG:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- spin_lock_irqsave(&adapter->stats_lock, flags);
- if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
- &data->val_out)) {
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
- return -EIO;
- }
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
- break;
- case SIOCSMIIREG:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- if (data->reg_num & ~(0x1F))
- return -EFAULT;
- mii_reg = data->val_in;
- spin_lock_irqsave(&adapter->stats_lock, flags);
- if (e1000_write_phy_reg(hw, data->reg_num,
- mii_reg)) {
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
- return -EIO;
- }
- spin_unlock_irqrestore(&adapter->stats_lock, flags);
- if (hw->media_type == e1000_media_type_copper) {
- switch (data->reg_num) {
- case PHY_CTRL:
- if (mii_reg & MII_CR_POWER_DOWN)
- break;
- if (mii_reg & MII_CR_AUTO_NEG_EN) {
- hw->autoneg = 1;
- 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)
- ? DUPLEX_FULL :
- DUPLEX_HALF;
- retval = e1000_set_spd_dplx(adapter,
- spddplx);
- if (retval)
- return retval;
- }
- if (netif_running(adapter->netdev))
- e1000_reinit_locked(adapter);
- else
- e1000_reset(adapter);
- break;
- case M88E1000_PHY_SPEC_CTRL:
- case M88E1000_EXT_PHY_SPEC_CTRL:
- if (e1000_phy_reset(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_reinit_locked(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_val = pci_set_mwi(adapter->pdev);
-
- if (ret_val)
- DPRINTK(PROBE, ERR, "Error in setting MWI\n");
-}
-
-void e1000_pci_clear_mwi(struct e1000_hw *hw)
-{
- struct e1000_adapter *adapter = hw->back;
-
- pci_clear_mwi(adapter->pdev);
-}
-
-int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
-{
- struct e1000_adapter *adapter = hw->back;
- return pcix_get_mmrbc(adapter->pdev);
-}
-
-void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
-{
- struct e1000_adapter *adapter = hw->back;
- pcix_set_mmrbc(adapter->pdev, mmrbc);
-}
-
-s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
-{
- struct e1000_adapter *adapter = hw->back;
- u16 cap_offset;
-
- cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
- if (!cap_offset)
- return -E1000_ERR_CONFIG;
-
- pci_read_config_word(adapter->pdev, cap_offset + reg, value);
-
- return E1000_SUCCESS;
-}
-
-void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
-{
- outl(value, port);
-}
-
-static void e1000_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *grp)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl, rctl;
-
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- e1000_irq_disable(adapter);
- adapter->vlgrp = grp;
-
- if (grp) {
- /* enable VLAN tag insert/strip */
- ctrl = er32(CTRL);
- ctrl |= E1000_CTRL_VME;
- ew32(CTRL, ctrl);
-
- if (adapter->hw.mac_type != e1000_ich8lan) {
- /* enable VLAN receive filtering */
- rctl = er32(RCTL);
- rctl &= ~E1000_RCTL_CFIEN;
- ew32(RCTL, rctl);
- e1000_update_mng_vlan(adapter);
- }
- } else {
- /* disable VLAN tag insert/strip */
- ctrl = er32(CTRL);
- ctrl &= ~E1000_CTRL_VME;
- ew32(CTRL, ctrl);
-
- if (adapter->hw.mac_type != e1000_ich8lan) {
- if (adapter->mng_vlan_id !=
- (u16)E1000_MNG_VLAN_NONE) {
- e1000_vlan_rx_kill_vid(netdev,
- adapter->mng_vlan_id);
- adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
- }
- }
- }
-
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- e1000_irq_enable(adapter);
-}
-
-static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 vfta, index;
-
- if ((hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
- (vid == adapter->mng_vlan_id))
- return;
- /* add VID to filter table */
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
- vfta |= (1 << (vid & 0x1F));
- e1000_write_vfta(hw, index, vfta);
-}
-
-static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 vfta, index;
-
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- e1000_irq_disable(adapter);
- vlan_group_set_device(adapter->vlgrp, vid, NULL);
- if (!test_bit(__E1000_DOWN, &adapter->flags))
- e1000_irq_enable(adapter);
-
- if ((hw->mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
- (vid == adapter->mng_vlan_id)) {
- /* release control to f/w */
- e1000_release_hw_control(adapter);
- return;
- }
-
- /* remove VID from filter table */
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
- vfta &= ~(1 << (vid & 0x1F));
- e1000_write_vfta(hw, index, vfta);
-}
-
-static void e1000_restore_vlan(struct e1000_adapter *adapter)
-{
- e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
-
- if (adapter->vlgrp) {
- u16 vid;
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- if (!vlan_group_get_device(adapter->vlgrp, vid))
- continue;
- e1000_vlan_rx_add_vid(adapter->netdev, vid);
- }
- }
-}
-
-int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- hw->autoneg = 0;
-
- /* Fiber NICs only allow 1000 gbps Full duplex */
- if ((hw->media_type == e1000_media_type_fiber) &&
- spddplx != (SPEED_1000 + DUPLEX_FULL)) {
- DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
- return -EINVAL;
- }
-
- switch (spddplx) {
- case SPEED_10 + DUPLEX_HALF:
- hw->forced_speed_duplex = e1000_10_half;
- break;
- case SPEED_10 + DUPLEX_FULL:
- hw->forced_speed_duplex = e1000_10_full;
- break;
- case SPEED_100 + DUPLEX_HALF:
- hw->forced_speed_duplex = e1000_100_half;
- break;
- case SPEED_100 + DUPLEX_FULL:
- hw->forced_speed_duplex = e1000_100_full;
- break;
- case SPEED_1000 + DUPLEX_FULL:
- hw->autoneg = 1;
- hw->autoneg_advertised = ADVERTISE_1000_FULL;
- break;
- case SPEED_1000 + DUPLEX_HALF: /* not supported */
- default:
- DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
- return -EINVAL;
- }
- return 0;
-}
-
-static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl, ctrl_ext, rctl, status;
- u32 wufc = adapter->wol;
-#ifdef CONFIG_PM
- int retval = 0;
-#endif
-
- netif_device_detach(netdev);
-
- if (netif_running(netdev)) {
- WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
- e1000_down(adapter);
- }
-
-#ifdef CONFIG_PM
- retval = pci_save_state(pdev);
- if (retval)
- return retval;
-#endif
-
- status = er32(STATUS);
- if (status & E1000_STATUS_LU)
- wufc &= ~E1000_WUFC_LNKC;
-
- if (wufc) {
- e1000_setup_rctl(adapter);
- e1000_set_rx_mode(netdev);
-
- /* turn on all-multi mode if wake on multicast is enabled */
- if (wufc & E1000_WUFC_MC) {
- rctl = er32(RCTL);
- rctl |= E1000_RCTL_MPE;
- ew32(RCTL, rctl);
- }
-
- if (hw->mac_type >= e1000_82540) {
- ctrl = er32(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;
- ew32(CTRL, ctrl);
- }
-
- if (hw->media_type == e1000_media_type_fiber ||
- hw->media_type == e1000_media_type_internal_serdes) {
- /* keep the laser running in D3 */
- ctrl_ext = er32(CTRL_EXT);
- ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
- ew32(CTRL_EXT, ctrl_ext);
- }
-
- /* Allow time for pending master requests to run */
- e1000_disable_pciex_master(hw);
-
- ew32(WUC, E1000_WUC_PME_EN);
- ew32(WUFC, wufc);
- pci_enable_wake(pdev, PCI_D3hot, 1);
- pci_enable_wake(pdev, PCI_D3cold, 1);
- } else {
- ew32(WUC, 0);
- ew32(WUFC, 0);
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
- }
-
- e1000_release_manageability(adapter);
-
- /* make sure adapter isn't asleep if manageability is enabled */
- if (adapter->en_mng_pt) {
- pci_enable_wake(pdev, PCI_D3hot, 1);
- pci_enable_wake(pdev, PCI_D3cold, 1);
- }
-
- if (hw->phy_type == e1000_phy_igp_3)
- e1000_phy_powerdown_workaround(hw);
-
- if (netif_running(netdev))
- e1000_free_irq(adapter);
-
- /* Release control of h/w to f/w. If f/w is AMT enabled, this
- * would have already happened in close and is redundant. */
- e1000_release_hw_control(adapter);
-
- pci_disable_device(pdev);
-
- pci_set_power_state(pdev, pci_choose_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(netdev);
- struct e1000_hw *hw = &adapter->hw;
- u32 err;
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
-
- if (adapter->need_ioport)
- err = pci_enable_device(pdev);
- else
- err = pci_enable_device_mem(pdev);
- if (err) {
- printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
- return err;
- }
- pci_set_master(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- if (netif_running(netdev)) {
- err = e1000_request_irq(adapter);
- if (err)
- return err;
- }
-
- e1000_power_up_phy(adapter);
- e1000_reset(adapter);
- ew32(WUS, ~0);
-
- e1000_init_manageability(adapter);
-
- if (netif_running(netdev))
- e1000_up(adapter);
-
- netif_device_attach(netdev);
-
- /* If the controller is 82573 and f/w is AMT, do not set
- * DRV_LOAD until the interface is up. For all other cases,
- * let the f/w know that the h/w is now under the control
- * of the driver. */
- if (hw->mac_type != e1000_82573 ||
- !e1000_check_mng_mode(hw))
- e1000_get_hw_control(adapter);
-
- return 0;
-}
-#endif
-
-static void e1000_shutdown(struct pci_dev *pdev)
-{
- e1000_suspend(pdev, PMSG_SUSPEND);
-}
-
-#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(netdev);
-
- disable_irq(adapter->pdev->irq);
- e1000_intr(adapter->pdev->irq, netdev);
- enable_irq(adapter->pdev->irq);
-}
-#endif
-
-/**
- * e1000_io_error_detected - called when PCI error is detected
- * @pdev: Pointer to PCI device
- * @state: The current pci conneection state
- *
- * This function is called after a PCI bus error affecting
- * this device has been detected.
- */
-static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- netif_device_detach(netdev);
-
- if (netif_running(netdev))
- e1000_down(adapter);
- pci_disable_device(pdev);
-
- /* Request a slot slot reset. */
- return PCI_ERS_RESULT_NEED_RESET;
-}
-
-/**
- * e1000_io_slot_reset - called after the pci bus has been reset.
- * @pdev: Pointer to PCI device
- *
- * Restart the card from scratch, as if from a cold-boot. Implementation
- * resembles the first-half of the e1000_resume routine.
- */
-static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- int err;
-
- if (adapter->need_ioport)
- err = pci_enable_device(pdev);
- else
- err = pci_enable_device_mem(pdev);
- if (err) {
- printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
- return PCI_ERS_RESULT_DISCONNECT;
- }
- pci_set_master(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- e1000_reset(adapter);
- ew32(WUS, ~0);
-
- return PCI_ERS_RESULT_RECOVERED;
-}
-
-/**
- * e1000_io_resume - called when traffic can start flowing again.
- * @pdev: Pointer to PCI device
- *
- * This callback is called when the error recovery driver tells us that
- * its OK to resume normal operation. Implementation resembles the
- * second-half of the e1000_resume routine.
- */
-static void e1000_io_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- e1000_init_manageability(adapter);
-
- if (netif_running(netdev)) {
- if (e1000_up(adapter)) {
- printk("e1000: can't bring device back up after reset\n");
- return;
- }
- }
-
- netif_device_attach(netdev);
-
- /* If the controller is 82573 and f/w is AMT, do not set
- * DRV_LOAD until the interface is up. For all other cases,
- * let the f/w know that the h/w is now under the control
- * of the driver. */
- if (hw->mac_type != e1000_82573 ||
- !e1000_check_mng_mode(hw))
- e1000_get_hw_control(adapter);
-
-}
-
-/* e1000_main.c */