1 /*******************************************************************************
4 Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
33 * - kcompat NETIF_MSG for older kernels (2.4.9) <sean.p.mcdermott@intel.com>
34 * - if_mii support and associated kcompat for older kernels
35 * - More errlogging support from Jon Mason <jonmason@us.ibm.com>
36 * - Fix TSO issues on PPC64 machines -- Jon Mason <jonmason@us.ibm.com>
39 * - ethtool register dump reads MANC register conditionally.
44 char e1000_driver_name[] = "e1000";
45 char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
46 #ifndef CONFIG_E1000_NAPI
49 #define DRIVERNAPI "-NAPI"
51 char e1000_driver_version[] = "5.3.19-k2"DRIVERNAPI;
52 char e1000_copyright[] = "Copyright (c) 1999-2004 Intel Corporation.";
54 /* e1000_pci_tbl - PCI Device ID Table
56 * Last entry must be all 0s
59 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
61 static struct pci_device_id e1000_pci_tbl[] = {
62 INTEL_E1000_ETHERNET_DEVICE(0x1000),
63 INTEL_E1000_ETHERNET_DEVICE(0x1001),
64 INTEL_E1000_ETHERNET_DEVICE(0x1004),
65 INTEL_E1000_ETHERNET_DEVICE(0x1008),
66 INTEL_E1000_ETHERNET_DEVICE(0x1009),
67 INTEL_E1000_ETHERNET_DEVICE(0x100C),
68 INTEL_E1000_ETHERNET_DEVICE(0x100D),
69 INTEL_E1000_ETHERNET_DEVICE(0x100E),
70 INTEL_E1000_ETHERNET_DEVICE(0x100F),
71 INTEL_E1000_ETHERNET_DEVICE(0x1010),
72 INTEL_E1000_ETHERNET_DEVICE(0x1011),
73 INTEL_E1000_ETHERNET_DEVICE(0x1012),
74 INTEL_E1000_ETHERNET_DEVICE(0x1013),
75 INTEL_E1000_ETHERNET_DEVICE(0x1015),
76 INTEL_E1000_ETHERNET_DEVICE(0x1016),
77 INTEL_E1000_ETHERNET_DEVICE(0x1017),
78 INTEL_E1000_ETHERNET_DEVICE(0x1018),
79 INTEL_E1000_ETHERNET_DEVICE(0x1019),
80 INTEL_E1000_ETHERNET_DEVICE(0x101D),
81 INTEL_E1000_ETHERNET_DEVICE(0x101E),
82 INTEL_E1000_ETHERNET_DEVICE(0x1026),
83 INTEL_E1000_ETHERNET_DEVICE(0x1027),
84 INTEL_E1000_ETHERNET_DEVICE(0x1028),
85 INTEL_E1000_ETHERNET_DEVICE(0x1075),
86 INTEL_E1000_ETHERNET_DEVICE(0x1076),
87 INTEL_E1000_ETHERNET_DEVICE(0x1077),
88 INTEL_E1000_ETHERNET_DEVICE(0x1078),
89 INTEL_E1000_ETHERNET_DEVICE(0x1079),
90 INTEL_E1000_ETHERNET_DEVICE(0x107A),
91 INTEL_E1000_ETHERNET_DEVICE(0x107B),
92 INTEL_E1000_ETHERNET_DEVICE(0x107C),
93 /* required last entry */
97 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
99 int e1000_up(struct e1000_adapter *adapter);
100 void e1000_down(struct e1000_adapter *adapter);
101 void e1000_reset(struct e1000_adapter *adapter);
102 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
103 int e1000_setup_tx_resources(struct e1000_adapter *adapter);
104 int e1000_setup_rx_resources(struct e1000_adapter *adapter);
105 void e1000_free_tx_resources(struct e1000_adapter *adapter);
106 void e1000_free_rx_resources(struct e1000_adapter *adapter);
107 void e1000_update_stats(struct e1000_adapter *adapter);
109 /* Local Function Prototypes */
111 static int e1000_init_module(void);
112 static void e1000_exit_module(void);
113 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
114 static void __devexit e1000_remove(struct pci_dev *pdev);
115 static int e1000_sw_init(struct e1000_adapter *adapter);
116 static int e1000_open(struct net_device *netdev);
117 static int e1000_close(struct net_device *netdev);
118 static void e1000_configure_tx(struct e1000_adapter *adapter);
119 static void e1000_configure_rx(struct e1000_adapter *adapter);
120 static void e1000_setup_rctl(struct e1000_adapter *adapter);
121 static void e1000_clean_tx_ring(struct e1000_adapter *adapter);
122 static void e1000_clean_rx_ring(struct e1000_adapter *adapter);
123 static void e1000_set_multi(struct net_device *netdev);
124 static void e1000_update_phy_info(unsigned long data);
125 static void e1000_watchdog(unsigned long data);
126 static void e1000_82547_tx_fifo_stall(unsigned long data);
127 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
128 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
129 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
130 static int e1000_set_mac(struct net_device *netdev, void *p);
131 static void e1000_irq_disable(struct e1000_adapter *adapter);
132 static void e1000_irq_enable(struct e1000_adapter *adapter);
133 static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs);
134 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter);
135 #ifdef CONFIG_E1000_NAPI
136 static int e1000_clean(struct net_device *netdev, int *budget);
137 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
138 int *work_done, int work_to_do);
140 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter);
142 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter);
143 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
144 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
146 void set_ethtool_ops(struct net_device *netdev);
147 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
148 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
149 static void e1000_rx_checksum(struct e1000_adapter *adapter,
150 struct e1000_rx_desc *rx_desc,
151 struct sk_buff *skb);
152 static void e1000_tx_timeout(struct net_device *dev);
153 static void e1000_tx_timeout_task(struct net_device *dev);
154 static void e1000_smartspeed(struct e1000_adapter *adapter);
155 static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
156 struct sk_buff *skb);
158 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
159 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
160 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
161 static void e1000_restore_vlan(struct e1000_adapter *adapter);
163 static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
164 static int e1000_suspend(struct pci_dev *pdev, uint32_t state);
166 static int e1000_resume(struct pci_dev *pdev);
169 #ifdef CONFIG_NET_POLL_CONTROLLER
170 /* for netdump / net console */
171 static void e1000_netpoll (struct net_device *netdev);
174 struct notifier_block e1000_notifier_reboot = {
175 .notifier_call = e1000_notify_reboot,
180 /* Exported from other modules */
182 extern void e1000_check_options(struct e1000_adapter *adapter);
184 static struct pci_driver e1000_driver = {
185 .name = e1000_driver_name,
186 .id_table = e1000_pci_tbl,
187 .probe = e1000_probe,
188 .remove = __devexit_p(e1000_remove),
189 /* Power Managment Hooks */
191 .suspend = e1000_suspend,
192 .resume = e1000_resume
196 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
197 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
198 MODULE_LICENSE("GPL");
200 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
201 module_param(debug, int, 0);
202 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
205 * e1000_init_module - Driver Registration Routine
207 * e1000_init_module is the first routine called when the driver is
208 * loaded. All it does is register with the PCI subsystem.
212 e1000_init_module(void)
215 printk(KERN_INFO "%s - version %s\n",
216 e1000_driver_string, e1000_driver_version);
218 printk(KERN_INFO "%s\n", e1000_copyright);
220 ret = pci_module_init(&e1000_driver);
222 register_reboot_notifier(&e1000_notifier_reboot);
227 module_init(e1000_init_module);
230 * e1000_exit_module - Driver Exit Cleanup Routine
232 * e1000_exit_module is called just before the driver is removed
237 e1000_exit_module(void)
239 unregister_reboot_notifier(&e1000_notifier_reboot);
240 pci_unregister_driver(&e1000_driver);
243 module_exit(e1000_exit_module);
247 e1000_up(struct e1000_adapter *adapter)
249 struct net_device *netdev = adapter->netdev;
252 /* hardware has been reset, we need to reload some things */
254 /* Reset the PHY if it was previously powered down */
255 if(adapter->hw.media_type == e1000_media_type_copper) {
257 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
258 if(mii_reg & MII_CR_POWER_DOWN)
259 e1000_phy_reset(&adapter->hw);
262 e1000_set_multi(netdev);
264 e1000_restore_vlan(adapter);
266 e1000_configure_tx(adapter);
267 e1000_setup_rctl(adapter);
268 e1000_configure_rx(adapter);
269 e1000_alloc_rx_buffers(adapter);
271 if((err = request_irq(adapter->pdev->irq, &e1000_intr,
272 SA_SHIRQ | SA_SAMPLE_RANDOM,
273 netdev->name, netdev)))
276 mod_timer(&adapter->watchdog_timer, jiffies);
277 e1000_irq_enable(adapter);
283 e1000_down(struct e1000_adapter *adapter)
285 struct net_device *netdev = adapter->netdev;
287 e1000_irq_disable(adapter);
288 free_irq(adapter->pdev->irq, netdev);
289 del_timer_sync(&adapter->tx_fifo_stall_timer);
290 del_timer_sync(&adapter->watchdog_timer);
291 del_timer_sync(&adapter->phy_info_timer);
292 adapter->link_speed = 0;
293 adapter->link_duplex = 0;
294 netif_carrier_off(netdev);
295 netif_stop_queue(netdev);
297 e1000_reset(adapter);
298 e1000_clean_tx_ring(adapter);
299 e1000_clean_rx_ring(adapter);
301 /* If WoL is not enabled
302 * Power down the PHY so no link is implied when interface is down */
303 if(!adapter->wol && adapter->hw.media_type == e1000_media_type_copper) {
305 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
306 mii_reg |= MII_CR_POWER_DOWN;
307 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
312 e1000_reset(struct e1000_adapter *adapter)
315 /* Repartition Pba for greater than 9k mtu
316 * To take effect CTRL.RST is required.
319 if(adapter->hw.mac_type < e1000_82547) {
320 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
325 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
329 adapter->tx_fifo_head = 0;
330 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
331 adapter->tx_fifo_size =
332 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
333 atomic_set(&adapter->tx_fifo_stall, 0);
335 E1000_WRITE_REG(&adapter->hw, PBA, pba);
337 /* flow control settings */
338 adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -
340 adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -
342 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
343 adapter->hw.fc_send_xon = 1;
344 adapter->hw.fc = adapter->hw.original_fc;
346 e1000_reset_hw(&adapter->hw);
347 if(adapter->hw.mac_type >= e1000_82544)
348 E1000_WRITE_REG(&adapter->hw, WUC, 0);
349 if(e1000_init_hw(&adapter->hw))
350 DPRINTK(PROBE, ERR, "Hardware Error\n");
352 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
353 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
355 e1000_reset_adaptive(&adapter->hw);
356 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
358 if(adapter->en_mng_pt) {
359 manc = E1000_READ_REG(&adapter->hw, MANC);
360 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
361 E1000_WRITE_REG(&adapter->hw, MANC, manc);
366 * e1000_probe - Device Initialization Routine
367 * @pdev: PCI device information struct
368 * @ent: entry in e1000_pci_tbl
370 * Returns 0 on success, negative on failure
372 * e1000_probe initializes an adapter identified by a pci_dev structure.
373 * The OS initialization, configuring of the adapter private structure,
374 * and a hardware reset occur.
378 e1000_probe(struct pci_dev *pdev,
379 const struct pci_device_id *ent)
381 struct net_device *netdev;
382 struct e1000_adapter *adapter;
383 static int cards_found = 0;
384 unsigned long mmio_start;
389 uint16_t eeprom_data;
391 if((err = pci_enable_device(pdev)))
394 if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
397 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
398 E1000_ERR("No usable DMA configuration, aborting\n");
404 if((err = pci_request_regions(pdev, e1000_driver_name)))
407 pci_set_master(pdev);
409 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
412 goto err_alloc_etherdev;
415 SET_MODULE_OWNER(netdev);
416 SET_NETDEV_DEV(netdev, &pdev->dev);
418 pci_set_drvdata(pdev, netdev);
419 adapter = netdev->priv;
420 adapter->netdev = netdev;
421 adapter->pdev = pdev;
422 adapter->hw.back = adapter;
423 adapter->msg_enable = (1 << debug) - 1;
426 /* we need to set the name early for the DPRINTK macro */
427 if(dev_alloc_name(netdev, netdev->name) < 0)
428 goto err_free_unlock;
430 mmio_start = pci_resource_start(pdev, BAR_0);
431 mmio_len = pci_resource_len(pdev, BAR_0);
433 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
434 if(!adapter->hw.hw_addr) {
439 for(i = BAR_1; i <= BAR_5; i++) {
440 if(pci_resource_len(pdev, i) == 0)
442 if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
443 adapter->hw.io_base = pci_resource_start(pdev, i);
448 netdev->open = &e1000_open;
449 netdev->stop = &e1000_close;
450 netdev->hard_start_xmit = &e1000_xmit_frame;
451 netdev->get_stats = &e1000_get_stats;
452 netdev->set_multicast_list = &e1000_set_multi;
453 netdev->set_mac_address = &e1000_set_mac;
454 netdev->change_mtu = &e1000_change_mtu;
455 netdev->do_ioctl = &e1000_ioctl;
456 set_ethtool_ops(netdev);
457 netdev->tx_timeout = &e1000_tx_timeout;
458 netdev->watchdog_timeo = 5 * HZ;
459 #ifdef CONFIG_E1000_NAPI
460 netdev->poll = &e1000_clean;
463 netdev->vlan_rx_register = e1000_vlan_rx_register;
464 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
465 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
466 #ifdef CONFIG_NET_POLL_CONTROLLER
467 netdev->poll_controller = e1000_netpoll;
470 netdev->mem_start = mmio_start;
471 netdev->mem_end = mmio_start + mmio_len;
472 netdev->base_addr = adapter->hw.io_base;
474 adapter->bd_number = cards_found;
476 /* setup the private structure */
478 if((err = e1000_sw_init(adapter)))
481 if(adapter->hw.mac_type >= e1000_82543) {
482 netdev->features = NETIF_F_SG |
486 NETIF_F_HW_VLAN_FILTER;
488 netdev->features = NETIF_F_SG;
492 /* Disbaled for now until root-cause is found for
493 * hangs reported against non-IA archs. TSO can be
494 * enabled using ethtool -K eth<x> tso on */
495 if((adapter->hw.mac_type >= e1000_82544) &&
496 (adapter->hw.mac_type != e1000_82547))
497 netdev->features |= NETIF_F_TSO;
500 netdev->features |= NETIF_F_HIGHDMA;
502 /* hard_start_xmit is safe against parallel locking */
503 netdev->features |= NETIF_F_LLTX;
505 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
507 /* before reading the EEPROM, reset the controller to
508 * put the device in a known good starting state */
510 e1000_reset_hw(&adapter->hw);
512 /* make sure the EEPROM is good */
514 if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
515 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
520 /* copy the MAC address out of the EEPROM */
522 if (e1000_read_mac_addr(&adapter->hw))
523 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
524 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
526 if(!is_valid_ether_addr(netdev->dev_addr)) {
527 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
532 e1000_read_part_num(&adapter->hw, &(adapter->part_num));
534 e1000_get_bus_info(&adapter->hw);
536 init_timer(&adapter->tx_fifo_stall_timer);
537 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
538 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
540 init_timer(&adapter->watchdog_timer);
541 adapter->watchdog_timer.function = &e1000_watchdog;
542 adapter->watchdog_timer.data = (unsigned long) adapter;
544 init_timer(&adapter->phy_info_timer);
545 adapter->phy_info_timer.function = &e1000_update_phy_info;
546 adapter->phy_info_timer.data = (unsigned long) adapter;
548 INIT_WORK(&adapter->tx_timeout_task,
549 (void (*)(void *))e1000_tx_timeout_task, netdev);
551 /* we're going to reset, so assume we have no link for now */
553 netif_carrier_off(netdev);
554 netif_stop_queue(netdev);
556 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
557 e1000_check_options(adapter);
559 /* Initial Wake on LAN setting
560 * If APM wake is enabled in the EEPROM,
561 * enable the ACPI Magic Packet filter
564 switch(adapter->hw.mac_type) {
565 case e1000_82542_rev2_0:
566 case e1000_82542_rev2_1:
570 case e1000_82546_rev_3:
571 if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
572 && (adapter->hw.media_type == e1000_media_type_copper)) {
573 e1000_read_eeprom(&adapter->hw,
574 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
579 e1000_read_eeprom(&adapter->hw,
580 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
583 if(eeprom_data & E1000_EEPROM_APME)
584 adapter->wol |= E1000_WUFC_MAG;
586 /* reset the hardware with the new settings */
587 e1000_reset(adapter);
589 /* We're already holding the rtnl lock; call the no-lock version */
590 if((err = register_netdevice(netdev)))
600 iounmap(adapter->hw.hw_addr);
606 pci_release_regions(pdev);
611 * e1000_remove - Device Removal Routine
612 * @pdev: PCI device information struct
614 * e1000_remove is called by the PCI subsystem to alert the driver
615 * that it should release a PCI device. The could be caused by a
616 * Hot-Plug event, or because the driver is going to be removed from
620 static void __devexit
621 e1000_remove(struct pci_dev *pdev)
623 struct net_device *netdev = pci_get_drvdata(pdev);
624 struct e1000_adapter *adapter = netdev->priv;
627 if(adapter->hw.mac_type >= e1000_82540 &&
628 adapter->hw.media_type == e1000_media_type_copper) {
629 manc = E1000_READ_REG(&adapter->hw, MANC);
630 if(manc & E1000_MANC_SMBUS_EN) {
631 manc |= E1000_MANC_ARP_EN;
632 E1000_WRITE_REG(&adapter->hw, MANC, manc);
636 unregister_netdev(netdev);
638 e1000_phy_hw_reset(&adapter->hw);
640 iounmap(adapter->hw.hw_addr);
641 pci_release_regions(pdev);
647 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
648 * @adapter: board private structure to initialize
650 * e1000_sw_init initializes the Adapter private data structure.
651 * Fields are initialized based on PCI device information and
652 * OS network device settings (MTU size).
656 e1000_sw_init(struct e1000_adapter *adapter)
658 struct e1000_hw *hw = &adapter->hw;
659 struct net_device *netdev = adapter->netdev;
660 struct pci_dev *pdev = adapter->pdev;
662 /* PCI config space info */
664 hw->vendor_id = pdev->vendor;
665 hw->device_id = pdev->device;
666 hw->subsystem_vendor_id = pdev->subsystem_vendor;
667 hw->subsystem_id = pdev->subsystem_device;
669 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
671 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
673 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
674 hw->max_frame_size = netdev->mtu +
675 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
676 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
678 /* identify the MAC */
680 if(e1000_set_mac_type(hw)) {
681 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
685 /* initialize eeprom parameters */
687 e1000_init_eeprom_params(hw);
689 switch(hw->mac_type) {
694 case e1000_82541_rev_2:
695 case e1000_82547_rev_2:
696 hw->phy_init_script = 1;
700 e1000_set_media_type(hw);
702 hw->wait_autoneg_complete = FALSE;
703 hw->tbi_compatibility_en = TRUE;
704 hw->adaptive_ifs = TRUE;
708 if(hw->media_type == e1000_media_type_copper) {
709 hw->mdix = AUTO_ALL_MODES;
710 hw->disable_polarity_correction = FALSE;
711 hw->master_slave = E1000_MASTER_SLAVE;
714 atomic_set(&adapter->irq_sem, 1);
715 spin_lock_init(&adapter->stats_lock);
716 spin_lock_init(&adapter->tx_lock);
722 * e1000_open - Called when a network interface is made active
723 * @netdev: network interface device structure
725 * Returns 0 on success, negative value on failure
727 * The open entry point is called when a network interface is made
728 * active by the system (IFF_UP). At this point all resources needed
729 * for transmit and receive operations are allocated, the interrupt
730 * handler is registered with the OS, the watchdog timer is started,
731 * and the stack is notified that the interface is ready.
735 e1000_open(struct net_device *netdev)
737 struct e1000_adapter *adapter = netdev->priv;
740 /* allocate transmit descriptors */
742 if((err = e1000_setup_tx_resources(adapter)))
745 /* allocate receive descriptors */
747 if((err = e1000_setup_rx_resources(adapter)))
750 if((err = e1000_up(adapter)))
753 return E1000_SUCCESS;
756 e1000_free_rx_resources(adapter);
758 e1000_free_tx_resources(adapter);
760 e1000_reset(adapter);
766 * e1000_close - Disables a network interface
767 * @netdev: network interface device structure
769 * Returns 0, this is not allowed to fail
771 * The close entry point is called when an interface is de-activated
772 * by the OS. The hardware is still under the drivers control, but
773 * needs to be disabled. A global MAC reset is issued to stop the
774 * hardware, and all transmit and receive resources are freed.
778 e1000_close(struct net_device *netdev)
780 struct e1000_adapter *adapter = netdev->priv;
784 e1000_free_tx_resources(adapter);
785 e1000_free_rx_resources(adapter);
791 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
792 * @adapter: board private structure
794 * Return 0 on success, negative on failure
798 e1000_setup_tx_resources(struct e1000_adapter *adapter)
800 struct e1000_desc_ring *txdr = &adapter->tx_ring;
801 struct pci_dev *pdev = adapter->pdev;
804 size = sizeof(struct e1000_buffer) * txdr->count;
805 txdr->buffer_info = vmalloc(size);
806 if(!txdr->buffer_info) {
808 "Unble to Allocate Memory for the Transmit descriptor ring\n");
811 memset(txdr->buffer_info, 0, size);
813 /* round up to nearest 4K */
815 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
816 E1000_ROUNDUP(txdr->size, 4096);
818 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
821 "Unble to Allocate Memory for the Transmit descriptor ring\n");
822 vfree(txdr->buffer_info);
825 memset(txdr->desc, 0, txdr->size);
827 txdr->next_to_use = 0;
828 txdr->next_to_clean = 0;
834 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
835 * @adapter: board private structure
837 * Configure the Tx unit of the MAC after a reset.
841 e1000_configure_tx(struct e1000_adapter *adapter)
843 uint64_t tdba = adapter->tx_ring.dma;
844 uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc);
847 E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL));
848 E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
850 E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen);
852 /* Setup the HW Tx Head and Tail descriptor pointers */
854 E1000_WRITE_REG(&adapter->hw, TDH, 0);
855 E1000_WRITE_REG(&adapter->hw, TDT, 0);
857 /* Set the default values for the Tx Inter Packet Gap timer */
859 switch (adapter->hw.mac_type) {
860 case e1000_82542_rev2_0:
861 case e1000_82542_rev2_1:
862 tipg = DEFAULT_82542_TIPG_IPGT;
863 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
864 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
867 if(adapter->hw.media_type == e1000_media_type_fiber ||
868 adapter->hw.media_type == e1000_media_type_internal_serdes)
869 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
871 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
872 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
873 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
875 E1000_WRITE_REG(&adapter->hw, TIPG, tipg);
877 /* Set the Tx Interrupt Delay register */
879 E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
880 if(adapter->hw.mac_type >= e1000_82540)
881 E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay);
883 /* Program the Transmit Control Register */
885 tctl = E1000_READ_REG(&adapter->hw, TCTL);
887 tctl &= ~E1000_TCTL_CT;
888 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
889 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
891 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
893 e1000_config_collision_dist(&adapter->hw);
895 /* Setup Transmit Descriptor Settings for eop descriptor */
896 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
899 if(adapter->hw.mac_type < e1000_82543)
900 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
902 adapter->txd_cmd |= E1000_TXD_CMD_RS;
904 /* Cache if we're 82544 running in PCI-X because we'll
905 * need this to apply a workaround later in the send path. */
906 if(adapter->hw.mac_type == e1000_82544 &&
907 adapter->hw.bus_type == e1000_bus_type_pcix)
908 adapter->pcix_82544 = 1;
912 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
913 * @adapter: board private structure
915 * Returns 0 on success, negative on failure
919 e1000_setup_rx_resources(struct e1000_adapter *adapter)
921 struct e1000_desc_ring *rxdr = &adapter->rx_ring;
922 struct pci_dev *pdev = adapter->pdev;
925 size = sizeof(struct e1000_buffer) * rxdr->count;
926 rxdr->buffer_info = vmalloc(size);
927 if(!rxdr->buffer_info) {
929 "Unble to Allocate Memory for the Recieve descriptor ring\n");
932 memset(rxdr->buffer_info, 0, size);
934 /* Round up to nearest 4K */
936 rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
937 E1000_ROUNDUP(rxdr->size, 4096);
939 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
943 "Unble to Allocate Memory for the Recieve descriptor ring\n");
944 vfree(rxdr->buffer_info);
947 memset(rxdr->desc, 0, rxdr->size);
949 rxdr->next_to_clean = 0;
950 rxdr->next_to_use = 0;
956 * e1000_setup_rctl - configure the receive control register
957 * @adapter: Board private structure
961 e1000_setup_rctl(struct e1000_adapter *adapter)
965 rctl = E1000_READ_REG(&adapter->hw, RCTL);
967 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
969 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
970 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
971 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
973 if(adapter->hw.tbi_compatibility_on == 1)
974 rctl |= E1000_RCTL_SBP;
976 rctl &= ~E1000_RCTL_SBP;
978 /* Setup buffer sizes */
979 rctl &= ~(E1000_RCTL_SZ_4096);
980 rctl |= (E1000_RCTL_BSEX | E1000_RCTL_LPE);
981 switch (adapter->rx_buffer_len) {
982 case E1000_RXBUFFER_2048:
984 rctl |= E1000_RCTL_SZ_2048;
985 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
987 case E1000_RXBUFFER_4096:
988 rctl |= E1000_RCTL_SZ_4096;
990 case E1000_RXBUFFER_8192:
991 rctl |= E1000_RCTL_SZ_8192;
993 case E1000_RXBUFFER_16384:
994 rctl |= E1000_RCTL_SZ_16384;
998 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1002 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1003 * @adapter: board private structure
1005 * Configure the Rx unit of the MAC after a reset.
1009 e1000_configure_rx(struct e1000_adapter *adapter)
1011 uint64_t rdba = adapter->rx_ring.dma;
1012 uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc);
1016 /* disable receives while setting up the descriptors */
1017 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1018 E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN);
1020 /* set the Receive Delay Timer Register */
1021 E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay);
1023 if(adapter->hw.mac_type >= e1000_82540) {
1024 E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay);
1025 if(adapter->itr > 1)
1026 E1000_WRITE_REG(&adapter->hw, ITR,
1027 1000000000 / (adapter->itr * 256));
1030 /* Setup the Base and Length of the Rx Descriptor Ring */
1031 E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1032 E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
1034 E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen);
1036 /* Setup the HW Rx Head and Tail Descriptor Pointers */
1037 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1038 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1040 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1041 if((adapter->hw.mac_type >= e1000_82543) &&
1042 (adapter->rx_csum == TRUE)) {
1043 rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM);
1044 rxcsum |= E1000_RXCSUM_TUOFL;
1045 E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum);
1048 /* Enable Receives */
1049 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1053 * e1000_free_tx_resources - Free Tx Resources
1054 * @adapter: board private structure
1056 * Free all transmit software resources
1060 e1000_free_tx_resources(struct e1000_adapter *adapter)
1062 struct pci_dev *pdev = adapter->pdev;
1064 e1000_clean_tx_ring(adapter);
1066 vfree(adapter->tx_ring.buffer_info);
1067 adapter->tx_ring.buffer_info = NULL;
1069 pci_free_consistent(pdev, adapter->tx_ring.size,
1070 adapter->tx_ring.desc, adapter->tx_ring.dma);
1072 adapter->tx_ring.desc = NULL;
1076 * e1000_clean_tx_ring - Free Tx Buffers
1077 * @adapter: board private structure
1081 e1000_clean_tx_ring(struct e1000_adapter *adapter)
1083 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1084 struct e1000_buffer *buffer_info;
1085 struct pci_dev *pdev = adapter->pdev;
1089 /* Free all the Tx ring sk_buffs */
1091 for(i = 0; i < tx_ring->count; i++) {
1092 buffer_info = &tx_ring->buffer_info[i];
1093 if(buffer_info->skb) {
1095 pci_unmap_page(pdev,
1097 buffer_info->length,
1100 dev_kfree_skb(buffer_info->skb);
1102 buffer_info->skb = NULL;
1106 size = sizeof(struct e1000_buffer) * tx_ring->count;
1107 memset(tx_ring->buffer_info, 0, size);
1109 /* Zero out the descriptor ring */
1111 memset(tx_ring->desc, 0, tx_ring->size);
1113 tx_ring->next_to_use = 0;
1114 tx_ring->next_to_clean = 0;
1116 E1000_WRITE_REG(&adapter->hw, TDH, 0);
1117 E1000_WRITE_REG(&adapter->hw, TDT, 0);
1121 * e1000_free_rx_resources - Free Rx Resources
1122 * @adapter: board private structure
1124 * Free all receive software resources
1128 e1000_free_rx_resources(struct e1000_adapter *adapter)
1130 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1131 struct pci_dev *pdev = adapter->pdev;
1133 e1000_clean_rx_ring(adapter);
1135 vfree(rx_ring->buffer_info);
1136 rx_ring->buffer_info = NULL;
1138 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1140 rx_ring->desc = NULL;
1144 * e1000_clean_rx_ring - Free Rx Buffers
1145 * @adapter: board private structure
1149 e1000_clean_rx_ring(struct e1000_adapter *adapter)
1151 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1152 struct e1000_buffer *buffer_info;
1153 struct pci_dev *pdev = adapter->pdev;
1157 /* Free all the Rx ring sk_buffs */
1159 for(i = 0; i < rx_ring->count; i++) {
1160 buffer_info = &rx_ring->buffer_info[i];
1161 if(buffer_info->skb) {
1163 pci_unmap_single(pdev,
1165 buffer_info->length,
1166 PCI_DMA_FROMDEVICE);
1168 dev_kfree_skb(buffer_info->skb);
1169 buffer_info->skb = NULL;
1173 size = sizeof(struct e1000_buffer) * rx_ring->count;
1174 memset(rx_ring->buffer_info, 0, size);
1176 /* Zero out the descriptor ring */
1178 memset(rx_ring->desc, 0, rx_ring->size);
1180 rx_ring->next_to_clean = 0;
1181 rx_ring->next_to_use = 0;
1183 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1184 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1187 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1188 * and memory write and invalidate disabled for certain operations
1191 e1000_enter_82542_rst(struct e1000_adapter *adapter)
1193 struct net_device *netdev = adapter->netdev;
1196 e1000_pci_clear_mwi(&adapter->hw);
1198 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1199 rctl |= E1000_RCTL_RST;
1200 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1201 E1000_WRITE_FLUSH(&adapter->hw);
1204 if(netif_running(netdev))
1205 e1000_clean_rx_ring(adapter);
1209 e1000_leave_82542_rst(struct e1000_adapter *adapter)
1211 struct net_device *netdev = adapter->netdev;
1214 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1215 rctl &= ~E1000_RCTL_RST;
1216 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1217 E1000_WRITE_FLUSH(&adapter->hw);
1220 if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
1221 e1000_pci_set_mwi(&adapter->hw);
1223 if(netif_running(netdev)) {
1224 e1000_configure_rx(adapter);
1225 e1000_alloc_rx_buffers(adapter);
1230 * e1000_set_mac - Change the Ethernet Address of the NIC
1231 * @netdev: network interface device structure
1232 * @p: pointer to an address structure
1234 * Returns 0 on success, negative on failure
1238 e1000_set_mac(struct net_device *netdev, void *p)
1240 struct e1000_adapter *adapter = netdev->priv;
1241 struct sockaddr *addr = p;
1243 if(!is_valid_ether_addr(addr->sa_data))
1244 return -EADDRNOTAVAIL;
1246 /* 82542 2.0 needs to be in reset to write receive address registers */
1248 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1249 e1000_enter_82542_rst(adapter);
1251 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1252 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
1254 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
1256 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1257 e1000_leave_82542_rst(adapter);
1263 * e1000_set_multi - Multicast and Promiscuous mode set
1264 * @netdev: network interface device structure
1266 * The set_multi entry point is called whenever the multicast address
1267 * list or the network interface flags are updated. This routine is
1268 * responsible for configuring the hardware for proper multicast,
1269 * promiscuous mode, and all-multi behavior.
1273 e1000_set_multi(struct net_device *netdev)
1275 struct e1000_adapter *adapter = netdev->priv;
1276 struct e1000_hw *hw = &adapter->hw;
1277 struct dev_mc_list *mc_ptr;
1279 uint32_t hash_value;
1281 unsigned long flags;
1283 /* Check for Promiscuous and All Multicast modes */
1285 spin_lock_irqsave(&adapter->tx_lock, flags);
1287 rctl = E1000_READ_REG(hw, RCTL);
1289 if(netdev->flags & IFF_PROMISC) {
1290 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1291 } else if(netdev->flags & IFF_ALLMULTI) {
1292 rctl |= E1000_RCTL_MPE;
1293 rctl &= ~E1000_RCTL_UPE;
1295 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
1298 E1000_WRITE_REG(hw, RCTL, rctl);
1300 /* 82542 2.0 needs to be in reset to write receive address registers */
1302 if(hw->mac_type == e1000_82542_rev2_0)
1303 e1000_enter_82542_rst(adapter);
1305 /* load the first 14 multicast address into the exact filters 1-14
1306 * RAR 0 is used for the station MAC adddress
1307 * if there are not 14 addresses, go ahead and clear the filters
1309 mc_ptr = netdev->mc_list;
1311 for(i = 1; i < E1000_RAR_ENTRIES; i++) {
1313 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
1314 mc_ptr = mc_ptr->next;
1316 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
1317 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
1321 /* clear the old settings from the multicast hash table */
1323 for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
1324 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1326 /* load any remaining addresses into the hash table */
1328 for(; mc_ptr; mc_ptr = mc_ptr->next) {
1329 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
1330 e1000_mta_set(hw, hash_value);
1333 if(hw->mac_type == e1000_82542_rev2_0)
1334 e1000_leave_82542_rst(adapter);
1336 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1339 /* Need to wait a few seconds after link up to get diagnostic information from
1343 e1000_update_phy_info(unsigned long data)
1345 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1346 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
1350 * e1000_82547_tx_fifo_stall - Timer Call-back
1351 * @data: pointer to adapter cast into an unsigned long
1355 e1000_82547_tx_fifo_stall(unsigned long data)
1357 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1358 struct net_device *netdev = adapter->netdev;
1361 if(atomic_read(&adapter->tx_fifo_stall)) {
1362 if((E1000_READ_REG(&adapter->hw, TDT) ==
1363 E1000_READ_REG(&adapter->hw, TDH)) &&
1364 (E1000_READ_REG(&adapter->hw, TDFT) ==
1365 E1000_READ_REG(&adapter->hw, TDFH)) &&
1366 (E1000_READ_REG(&adapter->hw, TDFTS) ==
1367 E1000_READ_REG(&adapter->hw, TDFHS))) {
1368 tctl = E1000_READ_REG(&adapter->hw, TCTL);
1369 E1000_WRITE_REG(&adapter->hw, TCTL,
1370 tctl & ~E1000_TCTL_EN);
1371 E1000_WRITE_REG(&adapter->hw, TDFT,
1372 adapter->tx_head_addr);
1373 E1000_WRITE_REG(&adapter->hw, TDFH,
1374 adapter->tx_head_addr);
1375 E1000_WRITE_REG(&adapter->hw, TDFTS,
1376 adapter->tx_head_addr);
1377 E1000_WRITE_REG(&adapter->hw, TDFHS,
1378 adapter->tx_head_addr);
1379 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
1380 E1000_WRITE_FLUSH(&adapter->hw);
1382 adapter->tx_fifo_head = 0;
1383 atomic_set(&adapter->tx_fifo_stall, 0);
1384 netif_wake_queue(netdev);
1386 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
1392 * e1000_watchdog - Timer Call-back
1393 * @data: pointer to netdev cast into an unsigned long
1397 e1000_watchdog(unsigned long data)
1399 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1400 struct net_device *netdev = adapter->netdev;
1401 struct e1000_desc_ring *txdr = &adapter->tx_ring;
1405 e1000_check_for_link(&adapter->hw);
1407 if((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
1408 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
1409 link = !adapter->hw.serdes_link_down;
1411 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
1414 if(!netif_carrier_ok(netdev)) {
1415 e1000_get_speed_and_duplex(&adapter->hw,
1416 &adapter->link_speed,
1417 &adapter->link_duplex);
1419 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
1420 adapter->link_speed,
1421 adapter->link_duplex == FULL_DUPLEX ?
1422 "Full Duplex" : "Half Duplex");
1424 netif_carrier_on(netdev);
1425 netif_wake_queue(netdev);
1426 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1427 adapter->smartspeed = 0;
1430 if(netif_carrier_ok(netdev)) {
1431 adapter->link_speed = 0;
1432 adapter->link_duplex = 0;
1433 DPRINTK(LINK, INFO, "NIC Link is Down\n");
1434 netif_carrier_off(netdev);
1435 netif_stop_queue(netdev);
1436 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1439 e1000_smartspeed(adapter);
1442 e1000_update_stats(adapter);
1444 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
1445 adapter->tpt_old = adapter->stats.tpt;
1446 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
1447 adapter->colc_old = adapter->stats.colc;
1449 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
1450 adapter->gorcl_old = adapter->stats.gorcl;
1451 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
1452 adapter->gotcl_old = adapter->stats.gotcl;
1454 e1000_update_adaptive(&adapter->hw);
1456 if(!netif_carrier_ok(netdev)) {
1457 if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
1458 /* We've lost link, so the controller stops DMA,
1459 * but we've got queued Tx work that's never going
1460 * to get done, so reset controller to flush Tx.
1461 * (Do the reset outside of interrupt context). */
1462 schedule_work(&adapter->tx_timeout_task);
1466 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
1467 if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
1468 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
1469 * asymmetrical Tx or Rx gets ITR=8000; everyone
1470 * else is between 2000-8000. */
1471 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
1472 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
1473 adapter->gotcl - adapter->gorcl :
1474 adapter->gorcl - adapter->gotcl) / 10000;
1475 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
1476 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
1479 /* Cause software interrupt to ensure rx ring is cleaned */
1480 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
1482 /* Early detection of hung controller */
1483 i = txdr->next_to_clean;
1484 if(txdr->buffer_info[i].dma &&
1485 time_after(jiffies, txdr->buffer_info[i].time_stamp + HZ) &&
1486 !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF))
1487 netif_stop_queue(netdev);
1489 /* Reset the timer */
1490 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1493 #define E1000_TX_FLAGS_CSUM 0x00000001
1494 #define E1000_TX_FLAGS_VLAN 0x00000002
1495 #define E1000_TX_FLAGS_TSO 0x00000004
1496 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
1497 #define E1000_TX_FLAGS_VLAN_SHIFT 16
1499 static inline boolean_t
1500 e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb)
1503 struct e1000_context_desc *context_desc;
1505 uint32_t cmd_length = 0;
1506 uint16_t ipcse, tucse, mss;
1507 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
1509 if(skb_shinfo(skb)->tso_size) {
1510 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
1511 mss = skb_shinfo(skb)->tso_size;
1512 skb->nh.iph->tot_len = 0;
1513 skb->nh.iph->check = 0;
1514 skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
1519 ipcss = skb->nh.raw - skb->data;
1520 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
1521 ipcse = skb->h.raw - skb->data - 1;
1522 tucss = skb->h.raw - skb->data;
1523 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
1526 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
1527 E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP |
1528 (skb->len - (hdr_len)));
1530 i = adapter->tx_ring.next_to_use;
1531 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1533 context_desc->lower_setup.ip_fields.ipcss = ipcss;
1534 context_desc->lower_setup.ip_fields.ipcso = ipcso;
1535 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
1536 context_desc->upper_setup.tcp_fields.tucss = tucss;
1537 context_desc->upper_setup.tcp_fields.tucso = tucso;
1538 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
1539 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
1540 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
1541 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
1543 if(++i == adapter->tx_ring.count) i = 0;
1544 adapter->tx_ring.next_to_use = i;
1553 static inline boolean_t
1554 e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
1556 struct e1000_context_desc *context_desc;
1560 if(likely(skb->ip_summed == CHECKSUM_HW)) {
1561 css = skb->h.raw - skb->data;
1563 i = adapter->tx_ring.next_to_use;
1564 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1566 context_desc->upper_setup.tcp_fields.tucss = css;
1567 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
1568 context_desc->upper_setup.tcp_fields.tucse = 0;
1569 context_desc->tcp_seg_setup.data = 0;
1570 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
1572 if(unlikely(++i == adapter->tx_ring.count)) i = 0;
1573 adapter->tx_ring.next_to_use = i;
1581 #define E1000_MAX_TXD_PWR 12
1582 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
1585 e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb,
1586 unsigned int first, unsigned int max_per_txd,
1587 unsigned int nr_frags, unsigned int mss)
1589 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1590 struct e1000_buffer *buffer_info;
1591 unsigned int len = skb->len;
1592 unsigned int offset = 0, size, count = 0, i;
1594 len -= skb->data_len;
1596 i = tx_ring->next_to_use;
1599 buffer_info = &tx_ring->buffer_info[i];
1600 size = min(len, max_per_txd);
1602 /* Workaround for premature desc write-backs
1603 * in TSO mode. Append 4-byte sentinel desc */
1604 if(unlikely(mss && !nr_frags && size == len && size > 8))
1607 /* Workaround for potential 82544 hang in PCI-X. Avoid
1608 * terminating buffers within evenly-aligned dwords. */
1609 if(unlikely(adapter->pcix_82544 &&
1610 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
1614 buffer_info->length = size;
1616 pci_map_single(adapter->pdev,
1620 buffer_info->time_stamp = jiffies;
1625 if(unlikely(++i == tx_ring->count)) i = 0;
1628 for(f = 0; f < nr_frags; f++) {
1629 struct skb_frag_struct *frag;
1631 frag = &skb_shinfo(skb)->frags[f];
1633 offset = frag->page_offset;
1636 buffer_info = &tx_ring->buffer_info[i];
1637 size = min(len, max_per_txd);
1639 /* Workaround for premature desc write-backs
1640 * in TSO mode. Append 4-byte sentinel desc */
1641 if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
1644 /* Workaround for potential 82544 hang in PCI-X.
1645 * Avoid terminating buffers within evenly-aligned
1647 if(unlikely(adapter->pcix_82544 &&
1648 !((unsigned long)(frag->page+offset+size-1) & 4) &&
1652 buffer_info->length = size;
1654 pci_map_page(adapter->pdev,
1659 buffer_info->time_stamp = jiffies;
1664 if(unlikely(++i == tx_ring->count)) i = 0;
1668 i = (i == 0) ? tx_ring->count - 1 : i - 1;
1669 tx_ring->buffer_info[i].skb = skb;
1670 tx_ring->buffer_info[first].next_to_watch = i;
1676 e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
1678 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1679 struct e1000_tx_desc *tx_desc = NULL;
1680 struct e1000_buffer *buffer_info;
1681 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
1684 if(likely(tx_flags & E1000_TX_FLAGS_TSO)) {
1685 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
1687 txd_upper |= (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8;
1690 if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
1691 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
1692 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
1695 if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
1696 txd_lower |= E1000_TXD_CMD_VLE;
1697 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
1700 i = tx_ring->next_to_use;
1703 buffer_info = &tx_ring->buffer_info[i];
1704 tx_desc = E1000_TX_DESC(*tx_ring, i);
1705 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1706 tx_desc->lower.data =
1707 cpu_to_le32(txd_lower | buffer_info->length);
1708 tx_desc->upper.data = cpu_to_le32(txd_upper);
1709 if(unlikely(++i == tx_ring->count)) i = 0;
1712 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
1714 /* Force memory writes to complete before letting h/w
1715 * know there are new descriptors to fetch. (Only
1716 * applicable for weak-ordered memory model archs,
1717 * such as IA-64). */
1720 tx_ring->next_to_use = i;
1721 E1000_WRITE_REG(&adapter->hw, TDT, i);
1725 * 82547 workaround to avoid controller hang in half-duplex environment.
1726 * The workaround is to avoid queuing a large packet that would span
1727 * the internal Tx FIFO ring boundary by notifying the stack to resend
1728 * the packet at a later time. This gives the Tx FIFO an opportunity to
1729 * flush all packets. When that occurs, we reset the Tx FIFO pointers
1730 * to the beginning of the Tx FIFO.
1733 #define E1000_FIFO_HDR 0x10
1734 #define E1000_82547_PAD_LEN 0x3E0
1737 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
1739 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
1740 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
1742 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
1744 if(adapter->link_duplex != HALF_DUPLEX)
1745 goto no_fifo_stall_required;
1747 if(atomic_read(&adapter->tx_fifo_stall))
1750 if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
1751 atomic_set(&adapter->tx_fifo_stall, 1);
1755 no_fifo_stall_required:
1756 adapter->tx_fifo_head += skb_fifo_len;
1757 if(adapter->tx_fifo_head >= adapter->tx_fifo_size)
1758 adapter->tx_fifo_head -= adapter->tx_fifo_size;
1762 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
1764 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1766 struct e1000_adapter *adapter = netdev->priv;
1767 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
1768 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
1769 unsigned int tx_flags = 0;
1770 unsigned int len = skb->len;
1771 unsigned long flags;
1772 unsigned int nr_frags = 0;
1773 unsigned int mss = 0;
1776 nr_frags = skb_shinfo(skb)->nr_frags;
1777 len -= skb->data_len;
1779 if(unlikely(skb->len <= 0)) {
1780 dev_kfree_skb_any(skb);
1781 return NETDEV_TX_OK;
1785 mss = skb_shinfo(skb)->tso_size;
1786 /* The controller does a simple calculation to
1787 * make sure there is enough room in the FIFO before
1788 * initiating the DMA for each buffer. The calc is:
1789 * 4 = ceil(buffer len/mss). To make sure we don't
1790 * overrun the FIFO, adjust the max buffer len if mss
1793 max_per_txd = min(mss << 2, max_per_txd);
1794 max_txd_pwr = fls(max_per_txd) - 1;
1797 if((mss) || (skb->ip_summed == CHECKSUM_HW))
1799 count++; /* for sentinel desc */
1801 if(skb->ip_summed == CHECKSUM_HW)
1804 count += TXD_USE_COUNT(len, max_txd_pwr);
1806 if(adapter->pcix_82544)
1809 nr_frags = skb_shinfo(skb)->nr_frags;
1810 for(f = 0; f < nr_frags; f++)
1811 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
1813 if(adapter->pcix_82544)
1816 local_irq_save(flags);
1817 if (!spin_trylock(&adapter->tx_lock)) {
1818 /* Collision - tell upper layer to requeue */
1819 local_irq_restore(flags);
1820 return NETDEV_TX_LOCKED;
1823 /* need: count + 2 desc gap to keep tail from touching
1824 * head, otherwise try next time */
1825 if(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2) {
1826 netif_stop_queue(netdev);
1827 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1828 return NETDEV_TX_BUSY;
1831 if(unlikely(adapter->hw.mac_type == e1000_82547)) {
1832 if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
1833 netif_stop_queue(netdev);
1834 mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
1835 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1836 return NETDEV_TX_BUSY;
1840 if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
1841 tx_flags |= E1000_TX_FLAGS_VLAN;
1842 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
1845 first = adapter->tx_ring.next_to_use;
1847 if(likely(e1000_tso(adapter, skb)))
1848 tx_flags |= E1000_TX_FLAGS_TSO;
1849 else if(likely(e1000_tx_csum(adapter, skb)))
1850 tx_flags |= E1000_TX_FLAGS_CSUM;
1852 e1000_tx_queue(adapter,
1853 e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss),
1856 netdev->trans_start = jiffies;
1858 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1859 return NETDEV_TX_OK;
1863 * e1000_tx_timeout - Respond to a Tx Hang
1864 * @netdev: network interface device structure
1868 e1000_tx_timeout(struct net_device *netdev)
1870 struct e1000_adapter *adapter = netdev->priv;
1872 /* Do the reset outside of interrupt context */
1873 schedule_work(&adapter->tx_timeout_task);
1877 e1000_tx_timeout_task(struct net_device *netdev)
1879 struct e1000_adapter *adapter = netdev->priv;
1881 e1000_down(adapter);
1886 * e1000_get_stats - Get System Network Statistics
1887 * @netdev: network interface device structure
1889 * Returns the address of the device statistics structure.
1890 * The statistics are actually updated from the timer callback.
1893 static struct net_device_stats *
1894 e1000_get_stats(struct net_device *netdev)
1896 struct e1000_adapter *adapter = netdev->priv;
1898 e1000_update_stats(adapter);
1899 return &adapter->net_stats;
1903 * e1000_change_mtu - Change the Maximum Transfer Unit
1904 * @netdev: network interface device structure
1905 * @new_mtu: new value for maximum frame size
1907 * Returns 0 on success, negative on failure
1911 e1000_change_mtu(struct net_device *netdev, int new_mtu)
1913 struct e1000_adapter *adapter = netdev->priv;
1914 int old_mtu = adapter->rx_buffer_len;
1915 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1917 if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
1918 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
1919 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
1923 if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) {
1924 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
1926 } else if(adapter->hw.mac_type < e1000_82543) {
1927 DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n");
1930 } else if(max_frame <= E1000_RXBUFFER_4096) {
1931 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
1933 } else if(max_frame <= E1000_RXBUFFER_8192) {
1934 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
1937 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
1940 if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
1941 e1000_down(adapter);
1945 netdev->mtu = new_mtu;
1946 adapter->hw.max_frame_size = max_frame;
1952 * e1000_update_stats - Update the board statistics counters
1953 * @adapter: board private structure
1957 e1000_update_stats(struct e1000_adapter *adapter)
1959 struct e1000_hw *hw = &adapter->hw;
1960 unsigned long flags;
1963 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
1965 spin_lock_irqsave(&adapter->stats_lock, flags);
1967 /* these counters are modified from e1000_adjust_tbi_stats,
1968 * called from the interrupt context, so they must only
1969 * be written while holding adapter->stats_lock
1972 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
1973 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
1974 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
1975 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
1976 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
1977 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
1978 adapter->stats.roc += E1000_READ_REG(hw, ROC);
1979 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
1980 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
1981 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
1982 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
1983 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
1984 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
1986 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
1987 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
1988 adapter->stats.scc += E1000_READ_REG(hw, SCC);
1989 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
1990 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
1991 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
1992 adapter->stats.dc += E1000_READ_REG(hw, DC);
1993 adapter->stats.sec += E1000_READ_REG(hw, SEC);
1994 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
1995 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
1996 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
1997 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
1998 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
1999 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
2000 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
2001 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
2002 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
2003 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
2004 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
2005 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
2006 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
2007 adapter->stats.torl += E1000_READ_REG(hw, TORL);
2008 adapter->stats.torh += E1000_READ_REG(hw, TORH);
2009 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
2010 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
2011 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
2012 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
2013 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
2014 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
2015 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
2016 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
2017 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
2018 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
2019 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
2021 /* used for adaptive IFS */
2023 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
2024 adapter->stats.tpt += hw->tx_packet_delta;
2025 hw->collision_delta = E1000_READ_REG(hw, COLC);
2026 adapter->stats.colc += hw->collision_delta;
2028 if(hw->mac_type >= e1000_82543) {
2029 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
2030 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
2031 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
2032 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
2033 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
2034 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
2037 /* Fill out the OS statistics structure */
2039 adapter->net_stats.rx_packets = adapter->stats.gprc;
2040 adapter->net_stats.tx_packets = adapter->stats.gptc;
2041 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
2042 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
2043 adapter->net_stats.multicast = adapter->stats.mprc;
2044 adapter->net_stats.collisions = adapter->stats.colc;
2048 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2049 adapter->stats.crcerrs + adapter->stats.algnerrc +
2050 adapter->stats.rlec + adapter->stats.rnbc +
2051 adapter->stats.mpc + adapter->stats.cexterr;
2052 adapter->net_stats.rx_dropped = adapter->stats.rnbc;
2053 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
2054 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2055 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2056 adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
2057 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2061 adapter->net_stats.tx_errors = adapter->stats.ecol +
2062 adapter->stats.latecol;
2063 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2064 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2065 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2067 /* Tx Dropped needs to be maintained elsewhere */
2071 if(hw->media_type == e1000_media_type_copper) {
2072 if((adapter->link_speed == SPEED_1000) &&
2073 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
2074 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2075 adapter->phy_stats.idle_errors += phy_tmp;
2078 if((hw->mac_type <= e1000_82546) &&
2079 (hw->phy_type == e1000_phy_m88) &&
2080 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
2081 adapter->phy_stats.receive_errors += phy_tmp;
2084 spin_unlock_irqrestore(&adapter->stats_lock, flags);
2088 * e1000_irq_disable - Mask off interrupt generation on the NIC
2089 * @adapter: board private structure
2093 e1000_irq_disable(struct e1000_adapter *adapter)
2095 atomic_inc(&adapter->irq_sem);
2096 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
2097 E1000_WRITE_FLUSH(&adapter->hw);
2098 synchronize_irq(adapter->pdev->irq);
2102 * e1000_irq_enable - Enable default interrupt generation settings
2103 * @adapter: board private structure
2107 e1000_irq_enable(struct e1000_adapter *adapter)
2109 if(likely(atomic_dec_and_test(&adapter->irq_sem))) {
2110 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
2111 E1000_WRITE_FLUSH(&adapter->hw);
2116 * e1000_intr - Interrupt Handler
2117 * @irq: interrupt number
2118 * @data: pointer to a network interface device structure
2119 * @pt_regs: CPU registers structure
2123 e1000_intr(int irq, void *data, struct pt_regs *regs)
2125 struct net_device *netdev = data;
2126 struct e1000_adapter *adapter = netdev->priv;
2127 struct e1000_hw *hw = &adapter->hw;
2128 uint32_t icr = E1000_READ_REG(hw, ICR);
2129 #ifndef CONFIG_E1000_NAPI
2134 return IRQ_NONE; /* Not our interrupt */
2136 if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
2137 hw->get_link_status = 1;
2138 mod_timer(&adapter->watchdog_timer, jiffies);
2141 #ifdef CONFIG_E1000_NAPI
2142 if(likely(netif_rx_schedule_prep(netdev))) {
2144 /* Disable interrupts and register for poll. The flush
2145 of the posted write is intentionally left out.
2148 atomic_inc(&adapter->irq_sem);
2149 E1000_WRITE_REG(hw, IMC, ~0);
2150 __netif_rx_schedule(netdev);
2153 for(i = 0; i < E1000_MAX_INTR; i++)
2154 if(unlikely(!e1000_clean_rx_irq(adapter) &
2155 !e1000_clean_tx_irq(adapter)))
2162 #ifdef CONFIG_E1000_NAPI
2164 * e1000_clean - NAPI Rx polling callback
2165 * @adapter: board private structure
2169 e1000_clean(struct net_device *netdev, int *budget)
2171 struct e1000_adapter *adapter = netdev->priv;
2172 int work_to_do = min(*budget, netdev->quota);
2176 tx_cleaned = e1000_clean_tx_irq(adapter);
2177 e1000_clean_rx_irq(adapter, &work_done, work_to_do);
2179 *budget -= work_done;
2180 netdev->quota -= work_done;
2182 /* if no Rx and Tx cleanup work was done, exit the polling mode */
2183 if(!tx_cleaned || (work_done < work_to_do) ||
2184 !netif_running(netdev)) {
2185 netif_rx_complete(netdev);
2186 e1000_irq_enable(adapter);
2190 return (work_done >= work_to_do);
2195 * e1000_clean_tx_irq - Reclaim resources after transmit completes
2196 * @adapter: board private structure
2200 e1000_clean_tx_irq(struct e1000_adapter *adapter)
2202 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
2203 struct net_device *netdev = adapter->netdev;
2204 struct pci_dev *pdev = adapter->pdev;
2205 struct e1000_tx_desc *tx_desc, *eop_desc;
2206 struct e1000_buffer *buffer_info;
2207 unsigned int i, eop;
2208 boolean_t cleaned = FALSE;
2210 i = tx_ring->next_to_clean;
2211 eop = tx_ring->buffer_info[i].next_to_watch;
2212 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2214 while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
2215 for(cleaned = FALSE; !cleaned; ) {
2216 tx_desc = E1000_TX_DESC(*tx_ring, i);
2217 buffer_info = &tx_ring->buffer_info[i];
2219 if(likely(buffer_info->dma)) {
2220 pci_unmap_page(pdev,
2222 buffer_info->length,
2224 buffer_info->dma = 0;
2227 if(buffer_info->skb) {
2228 dev_kfree_skb_any(buffer_info->skb);
2229 buffer_info->skb = NULL;
2232 tx_desc->buffer_addr = 0;
2233 tx_desc->lower.data = 0;
2234 tx_desc->upper.data = 0;
2236 cleaned = (i == eop);
2237 if(unlikely(++i == tx_ring->count)) i = 0;
2240 eop = tx_ring->buffer_info[i].next_to_watch;
2241 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2244 tx_ring->next_to_clean = i;
2246 spin_lock(&adapter->tx_lock);
2248 if(unlikely(cleaned && netif_queue_stopped(netdev) &&
2249 netif_carrier_ok(netdev)))
2250 netif_wake_queue(netdev);
2252 spin_unlock(&adapter->tx_lock);
2258 * e1000_clean_rx_irq - Send received data up the network stack
2259 * @adapter: board private structure
2263 #ifdef CONFIG_E1000_NAPI
2264 e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done,
2267 e1000_clean_rx_irq(struct e1000_adapter *adapter)
2270 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2271 struct net_device *netdev = adapter->netdev;
2272 struct pci_dev *pdev = adapter->pdev;
2273 struct e1000_rx_desc *rx_desc;
2274 struct e1000_buffer *buffer_info;
2275 struct sk_buff *skb;
2276 unsigned long flags;
2280 boolean_t cleaned = FALSE;
2282 i = rx_ring->next_to_clean;
2283 rx_desc = E1000_RX_DESC(*rx_ring, i);
2285 while(rx_desc->status & E1000_RXD_STAT_DD) {
2286 buffer_info = &rx_ring->buffer_info[i];
2287 #ifdef CONFIG_E1000_NAPI
2288 if(*work_done >= work_to_do)
2294 pci_unmap_single(pdev,
2296 buffer_info->length,
2297 PCI_DMA_FROMDEVICE);
2299 skb = buffer_info->skb;
2300 length = le16_to_cpu(rx_desc->length);
2302 if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) {
2303 /* All receives must fit into a single buffer */
2304 E1000_DBG("%s: Receive packet consumed multiple"
2305 " buffers\n", netdev->name);
2306 dev_kfree_skb_irq(skb);
2310 if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
2311 last_byte = *(skb->data + length - 1);
2312 if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
2313 rx_desc->errors, length, last_byte)) {
2314 spin_lock_irqsave(&adapter->stats_lock, flags);
2315 e1000_tbi_adjust_stats(&adapter->hw,
2318 spin_unlock_irqrestore(&adapter->stats_lock,
2322 dev_kfree_skb_irq(skb);
2328 skb_put(skb, length - ETHERNET_FCS_SIZE);
2330 /* Receive Checksum Offload */
2331 e1000_rx_checksum(adapter, rx_desc, skb);
2333 skb->protocol = eth_type_trans(skb, netdev);
2334 #ifdef CONFIG_E1000_NAPI
2335 if(unlikely(adapter->vlgrp &&
2336 (rx_desc->status & E1000_RXD_STAT_VP))) {
2337 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
2338 le16_to_cpu(rx_desc->special &
2339 E1000_RXD_SPC_VLAN_MASK));
2341 netif_receive_skb(skb);
2343 #else /* CONFIG_E1000_NAPI */
2344 if(unlikely(adapter->vlgrp &&
2345 (rx_desc->status & E1000_RXD_STAT_VP))) {
2346 vlan_hwaccel_rx(skb, adapter->vlgrp,
2347 le16_to_cpu(rx_desc->special &
2348 E1000_RXD_SPC_VLAN_MASK));
2352 #endif /* CONFIG_E1000_NAPI */
2353 netdev->last_rx = jiffies;
2356 rx_desc->status = 0;
2357 buffer_info->skb = NULL;
2358 if(unlikely(++i == rx_ring->count)) i = 0;
2360 rx_desc = E1000_RX_DESC(*rx_ring, i);
2363 rx_ring->next_to_clean = i;
2365 e1000_alloc_rx_buffers(adapter);
2371 * e1000_alloc_rx_buffers - Replace used receive buffers
2372 * @adapter: address of board private structure
2376 e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
2378 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2379 struct net_device *netdev = adapter->netdev;
2380 struct pci_dev *pdev = adapter->pdev;
2381 struct e1000_rx_desc *rx_desc;
2382 struct e1000_buffer *buffer_info;
2383 struct sk_buff *skb;
2386 i = rx_ring->next_to_use;
2387 buffer_info = &rx_ring->buffer_info[i];
2389 while(!buffer_info->skb) {
2391 skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
2392 if(unlikely(!skb)) {
2393 /* Better luck next round */
2397 /* Make buffer alignment 2 beyond a 16 byte boundary
2398 * this will result in a 16 byte aligned IP header after
2399 * the 14 byte MAC header is removed
2401 skb_reserve(skb, NET_IP_ALIGN);
2405 buffer_info->skb = skb;
2406 buffer_info->length = adapter->rx_buffer_len;
2407 buffer_info->dma = pci_map_single(pdev,
2409 adapter->rx_buffer_len,
2410 PCI_DMA_FROMDEVICE);
2412 rx_desc = E1000_RX_DESC(*rx_ring, i);
2413 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2415 if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) {
2416 /* Force memory writes to complete before letting h/w
2417 * know there are new descriptors to fetch. (Only
2418 * applicable for weak-ordered memory model archs,
2419 * such as IA-64). */
2422 E1000_WRITE_REG(&adapter->hw, RDT, i);
2425 if(unlikely(++i == rx_ring->count)) i = 0;
2426 buffer_info = &rx_ring->buffer_info[i];
2429 rx_ring->next_to_use = i;
2433 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
2438 e1000_smartspeed(struct e1000_adapter *adapter)
2440 uint16_t phy_status;
2443 if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
2444 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
2447 if(adapter->smartspeed == 0) {
2448 /* If Master/Slave config fault is asserted twice,
2449 * we assume back-to-back */
2450 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2451 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2452 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2453 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2454 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2455 if(phy_ctrl & CR_1000T_MS_ENABLE) {
2456 phy_ctrl &= ~CR_1000T_MS_ENABLE;
2457 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
2459 adapter->smartspeed++;
2460 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2461 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
2463 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2464 MII_CR_RESTART_AUTO_NEG);
2465 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
2470 } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
2471 /* If still no link, perhaps using 2/3 pair cable */
2472 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2473 phy_ctrl |= CR_1000T_MS_ENABLE;
2474 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
2475 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2476 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
2477 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2478 MII_CR_RESTART_AUTO_NEG);
2479 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
2482 /* Restart process after E1000_SMARTSPEED_MAX iterations */
2483 if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
2484 adapter->smartspeed = 0;
2495 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2501 return e1000_mii_ioctl(netdev, ifr, cmd);
2515 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2517 struct e1000_adapter *adapter = netdev->priv;
2518 struct mii_ioctl_data *data = if_mii(ifr);
2523 if(adapter->hw.media_type != e1000_media_type_copper)
2528 data->phy_id = adapter->hw.phy_addr;
2531 if (!capable(CAP_NET_ADMIN))
2533 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
2538 if (!capable(CAP_NET_ADMIN))
2540 if (data->reg_num & ~(0x1F))
2542 mii_reg = data->val_in;
2543 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
2546 if (adapter->hw.phy_type == e1000_phy_m88) {
2547 switch (data->reg_num) {
2549 if(mii_reg & MII_CR_POWER_DOWN)
2551 if(mii_reg & MII_CR_AUTO_NEG_EN) {
2552 adapter->hw.autoneg = 1;
2553 adapter->hw.autoneg_advertised = 0x2F;
2556 spddplx = SPEED_1000;
2557 else if (mii_reg & 0x2000)
2558 spddplx = SPEED_100;
2561 spddplx += (mii_reg & 0x100)
2564 retval = e1000_set_spd_dplx(adapter,
2569 if(netif_running(adapter->netdev)) {
2570 e1000_down(adapter);
2573 e1000_reset(adapter);
2575 case M88E1000_PHY_SPEC_CTRL:
2576 case M88E1000_EXT_PHY_SPEC_CTRL:
2577 if (e1000_phy_reset(&adapter->hw))
2582 switch (data->reg_num) {
2584 if(mii_reg & MII_CR_POWER_DOWN)
2586 if(netif_running(adapter->netdev)) {
2587 e1000_down(adapter);
2590 e1000_reset(adapter);
2598 return E1000_SUCCESS;
2602 * e1000_rx_checksum - Receive Checksum Offload for 82543
2603 * @adapter: board private structure
2604 * @rx_desc: receive descriptor
2605 * @sk_buff: socket buffer with received data
2609 e1000_rx_checksum(struct e1000_adapter *adapter,
2610 struct e1000_rx_desc *rx_desc,
2611 struct sk_buff *skb)
2613 /* 82543 or newer only */
2614 if(unlikely((adapter->hw.mac_type < e1000_82543) ||
2615 /* Ignore Checksum bit is set */
2616 (rx_desc->status & E1000_RXD_STAT_IXSM) ||
2617 /* TCP Checksum has not been calculated */
2618 (!(rx_desc->status & E1000_RXD_STAT_TCPCS)))) {
2619 skb->ip_summed = CHECKSUM_NONE;
2623 /* At this point we know the hardware did the TCP checksum */
2624 /* now look at the TCP checksum error bit */
2625 if(rx_desc->errors & E1000_RXD_ERR_TCPE) {
2626 /* let the stack verify checksum errors */
2627 skb->ip_summed = CHECKSUM_NONE;
2628 adapter->hw_csum_err++;
2630 /* TCP checksum is good */
2631 skb->ip_summed = CHECKSUM_UNNECESSARY;
2632 adapter->hw_csum_good++;
2637 e1000_pci_set_mwi(struct e1000_hw *hw)
2639 struct e1000_adapter *adapter = hw->back;
2642 ret = pci_set_mwi(adapter->pdev);
2646 e1000_pci_clear_mwi(struct e1000_hw *hw)
2648 struct e1000_adapter *adapter = hw->back;
2650 pci_clear_mwi(adapter->pdev);
2654 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2656 struct e1000_adapter *adapter = hw->back;
2658 pci_read_config_word(adapter->pdev, reg, value);
2662 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2664 struct e1000_adapter *adapter = hw->back;
2666 pci_write_config_word(adapter->pdev, reg, *value);
2670 e1000_io_read(struct e1000_hw *hw, unsigned long port)
2676 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
2682 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2684 struct e1000_adapter *adapter = netdev->priv;
2685 uint32_t ctrl, rctl;
2687 e1000_irq_disable(adapter);
2688 adapter->vlgrp = grp;
2691 /* enable VLAN tag insert/strip */
2692 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2693 ctrl |= E1000_CTRL_VME;
2694 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2696 /* enable VLAN receive filtering */
2697 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2698 rctl |= E1000_RCTL_VFE;
2699 rctl &= ~E1000_RCTL_CFIEN;
2700 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2702 /* disable VLAN tag insert/strip */
2703 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2704 ctrl &= ~E1000_CTRL_VME;
2705 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2707 /* disable VLAN filtering */
2708 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2709 rctl &= ~E1000_RCTL_VFE;
2710 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2713 e1000_irq_enable(adapter);
2717 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
2719 struct e1000_adapter *adapter = netdev->priv;
2720 uint32_t vfta, index;
2722 /* add VID to filter table */
2723 index = (vid >> 5) & 0x7F;
2724 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2725 vfta |= (1 << (vid & 0x1F));
2726 e1000_write_vfta(&adapter->hw, index, vfta);
2730 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
2732 struct e1000_adapter *adapter = netdev->priv;
2733 uint32_t vfta, index;
2735 e1000_irq_disable(adapter);
2738 adapter->vlgrp->vlan_devices[vid] = NULL;
2740 e1000_irq_enable(adapter);
2742 /* remove VID from filter table */
2743 index = (vid >> 5) & 0x7F;
2744 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2745 vfta &= ~(1 << (vid & 0x1F));
2746 e1000_write_vfta(&adapter->hw, index, vfta);
2750 e1000_restore_vlan(struct e1000_adapter *adapter)
2752 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2754 if(adapter->vlgrp) {
2756 for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2757 if(!adapter->vlgrp->vlan_devices[vid])
2759 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2765 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
2767 adapter->hw.autoneg = 0;
2770 case SPEED_10 + DUPLEX_HALF:
2771 adapter->hw.forced_speed_duplex = e1000_10_half;
2773 case SPEED_10 + DUPLEX_FULL:
2774 adapter->hw.forced_speed_duplex = e1000_10_full;
2776 case SPEED_100 + DUPLEX_HALF:
2777 adapter->hw.forced_speed_duplex = e1000_100_half;
2779 case SPEED_100 + DUPLEX_FULL:
2780 adapter->hw.forced_speed_duplex = e1000_100_full;
2782 case SPEED_1000 + DUPLEX_FULL:
2783 adapter->hw.autoneg = 1;
2784 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
2786 case SPEED_1000 + DUPLEX_HALF: /* not supported */
2789 "Unsupported Speed/Duplexity configuration\n");
2796 e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
2798 struct pci_dev *pdev = NULL;
2804 while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
2805 if(pci_dev_driver(pdev) == &e1000_driver)
2806 e1000_suspend(pdev, 3);
2813 e1000_suspend(struct pci_dev *pdev, uint32_t state)
2815 struct net_device *netdev = pci_get_drvdata(pdev);
2816 struct e1000_adapter *adapter = netdev->priv;
2817 uint32_t ctrl, ctrl_ext, rctl, manc, status;
2818 uint32_t wufc = adapter->wol;
2820 netif_device_detach(netdev);
2822 if(netif_running(netdev))
2823 e1000_down(adapter);
2825 status = E1000_READ_REG(&adapter->hw, STATUS);
2826 if(status & E1000_STATUS_LU)
2827 wufc &= ~E1000_WUFC_LNKC;
2830 e1000_setup_rctl(adapter);
2831 e1000_set_multi(netdev);
2833 /* turn on all-multi mode if wake on multicast is enabled */
2834 if(adapter->wol & E1000_WUFC_MC) {
2835 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2836 rctl |= E1000_RCTL_MPE;
2837 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2840 if(adapter->hw.mac_type >= e1000_82540) {
2841 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2842 /* advertise wake from D3Cold */
2843 #define E1000_CTRL_ADVD3WUC 0x00100000
2844 /* phy power management enable */
2845 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
2846 ctrl |= E1000_CTRL_ADVD3WUC |
2847 E1000_CTRL_EN_PHY_PWR_MGMT;
2848 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2851 if(adapter->hw.media_type == e1000_media_type_fiber ||
2852 adapter->hw.media_type == e1000_media_type_internal_serdes) {
2853 /* keep the laser running in D3 */
2854 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
2855 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
2856 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
2859 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
2860 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
2861 pci_enable_wake(pdev, 3, 1);
2862 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
2864 E1000_WRITE_REG(&adapter->hw, WUC, 0);
2865 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
2866 pci_enable_wake(pdev, 3, 0);
2867 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
2870 pci_save_state(pdev, adapter->pci_state);
2872 if(adapter->hw.mac_type >= e1000_82540 &&
2873 adapter->hw.media_type == e1000_media_type_copper) {
2874 manc = E1000_READ_REG(&adapter->hw, MANC);
2875 if(manc & E1000_MANC_SMBUS_EN) {
2876 manc |= E1000_MANC_ARP_EN;
2877 E1000_WRITE_REG(&adapter->hw, MANC, manc);
2878 pci_enable_wake(pdev, 3, 1);
2879 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
2883 pci_disable_device(pdev);
2885 state = (state > 0) ? 3 : 0;
2886 pci_set_power_state(pdev, state);
2893 e1000_resume(struct pci_dev *pdev)
2895 struct net_device *netdev = pci_get_drvdata(pdev);
2896 struct e1000_adapter *adapter = netdev->priv;
2899 pci_enable_device(pdev);
2900 pci_set_power_state(pdev, 0);
2901 pci_restore_state(pdev, adapter->pci_state);
2903 pci_enable_wake(pdev, 3, 0);
2904 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
2906 e1000_reset(adapter);
2907 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
2909 if(netif_running(netdev))
2912 netif_device_attach(netdev);
2914 if(adapter->hw.mac_type >= e1000_82540 &&
2915 adapter->hw.media_type == e1000_media_type_copper) {
2916 manc = E1000_READ_REG(&adapter->hw, MANC);
2917 manc &= ~(E1000_MANC_ARP_EN);
2918 E1000_WRITE_REG(&adapter->hw, MANC, manc);
2925 #ifdef CONFIG_NET_POLL_CONTROLLER
2927 * Polling 'interrupt' - used by things like netconsole to send skbs
2928 * without having to re-enable interrupts. It's not called while
2929 * the interrupt routine is executing.
2932 e1000_netpoll (struct net_device *netdev)
2934 struct e1000_adapter *adapter = netdev->priv;
2935 disable_irq(adapter->pdev->irq);
2936 e1000_intr(adapter->pdev->irq, netdev, NULL);
2937 enable_irq(adapter->pdev->irq);