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 #define DRV_VERSION "5.5.4-k2"DRIVERNAPI;
52 char e1000_driver_version[] = DRV_VERSION;
53 char e1000_copyright[] = "Copyright (c) 1999-2004 Intel Corporation.";
55 /* e1000_pci_tbl - PCI Device ID Table
57 * Last entry must be all 0s
60 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
62 static struct pci_device_id e1000_pci_tbl[] = {
63 INTEL_E1000_ETHERNET_DEVICE(0x1000),
64 INTEL_E1000_ETHERNET_DEVICE(0x1001),
65 INTEL_E1000_ETHERNET_DEVICE(0x1004),
66 INTEL_E1000_ETHERNET_DEVICE(0x1008),
67 INTEL_E1000_ETHERNET_DEVICE(0x1009),
68 INTEL_E1000_ETHERNET_DEVICE(0x100C),
69 INTEL_E1000_ETHERNET_DEVICE(0x100D),
70 INTEL_E1000_ETHERNET_DEVICE(0x100E),
71 INTEL_E1000_ETHERNET_DEVICE(0x100F),
72 INTEL_E1000_ETHERNET_DEVICE(0x1010),
73 INTEL_E1000_ETHERNET_DEVICE(0x1011),
74 INTEL_E1000_ETHERNET_DEVICE(0x1012),
75 INTEL_E1000_ETHERNET_DEVICE(0x1013),
76 INTEL_E1000_ETHERNET_DEVICE(0x1015),
77 INTEL_E1000_ETHERNET_DEVICE(0x1016),
78 INTEL_E1000_ETHERNET_DEVICE(0x1017),
79 INTEL_E1000_ETHERNET_DEVICE(0x1018),
80 INTEL_E1000_ETHERNET_DEVICE(0x1019),
81 INTEL_E1000_ETHERNET_DEVICE(0x101D),
82 INTEL_E1000_ETHERNET_DEVICE(0x101E),
83 INTEL_E1000_ETHERNET_DEVICE(0x1026),
84 INTEL_E1000_ETHERNET_DEVICE(0x1027),
85 INTEL_E1000_ETHERNET_DEVICE(0x1028),
86 INTEL_E1000_ETHERNET_DEVICE(0x1075),
87 INTEL_E1000_ETHERNET_DEVICE(0x1076),
88 INTEL_E1000_ETHERNET_DEVICE(0x1077),
89 INTEL_E1000_ETHERNET_DEVICE(0x1078),
90 INTEL_E1000_ETHERNET_DEVICE(0x1079),
91 INTEL_E1000_ETHERNET_DEVICE(0x107A),
92 INTEL_E1000_ETHERNET_DEVICE(0x107B),
93 INTEL_E1000_ETHERNET_DEVICE(0x107C),
94 /* required last entry */
98 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
100 int e1000_up(struct e1000_adapter *adapter);
101 void e1000_down(struct e1000_adapter *adapter);
102 void e1000_reset(struct e1000_adapter *adapter);
103 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
104 int e1000_setup_tx_resources(struct e1000_adapter *adapter);
105 int e1000_setup_rx_resources(struct e1000_adapter *adapter);
106 void e1000_free_tx_resources(struct e1000_adapter *adapter);
107 void e1000_free_rx_resources(struct e1000_adapter *adapter);
108 void e1000_update_stats(struct e1000_adapter *adapter);
110 /* Local Function Prototypes */
112 static int e1000_init_module(void);
113 static void e1000_exit_module(void);
114 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
115 static void __devexit e1000_remove(struct pci_dev *pdev);
116 static int e1000_sw_init(struct e1000_adapter *adapter);
117 static int e1000_open(struct net_device *netdev);
118 static int e1000_close(struct net_device *netdev);
119 static void e1000_configure_tx(struct e1000_adapter *adapter);
120 static void e1000_configure_rx(struct e1000_adapter *adapter);
121 static void e1000_setup_rctl(struct e1000_adapter *adapter);
122 static void e1000_clean_tx_ring(struct e1000_adapter *adapter);
123 static void e1000_clean_rx_ring(struct e1000_adapter *adapter);
124 static void e1000_set_multi(struct net_device *netdev);
125 static void e1000_update_phy_info(unsigned long data);
126 static void e1000_watchdog(unsigned long data);
127 static void e1000_82547_tx_fifo_stall(unsigned long data);
128 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
129 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
130 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
131 static int e1000_set_mac(struct net_device *netdev, void *p);
132 static void e1000_irq_disable(struct e1000_adapter *adapter);
133 static void e1000_irq_enable(struct e1000_adapter *adapter);
134 static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs);
135 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter);
136 #ifdef CONFIG_E1000_NAPI
137 static int e1000_clean(struct net_device *netdev, int *budget);
138 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
139 int *work_done, int work_to_do);
141 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter);
143 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter);
144 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
145 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
147 void set_ethtool_ops(struct net_device *netdev);
148 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
149 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
150 static void e1000_rx_checksum(struct e1000_adapter *adapter,
151 struct e1000_rx_desc *rx_desc,
152 struct sk_buff *skb);
153 static void e1000_tx_timeout(struct net_device *dev);
154 static void e1000_tx_timeout_task(struct net_device *dev);
155 static void e1000_smartspeed(struct e1000_adapter *adapter);
156 static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
157 struct sk_buff *skb);
159 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
160 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
161 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
162 static void e1000_restore_vlan(struct e1000_adapter *adapter);
164 static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
165 static int e1000_suspend(struct pci_dev *pdev, uint32_t state);
167 static int e1000_resume(struct pci_dev *pdev);
170 #ifdef CONFIG_NET_POLL_CONTROLLER
171 /* for netdump / net console */
172 static void e1000_netpoll (struct net_device *netdev);
175 struct notifier_block e1000_notifier_reboot = {
176 .notifier_call = e1000_notify_reboot,
181 /* Exported from other modules */
183 extern void e1000_check_options(struct e1000_adapter *adapter);
185 static struct pci_driver e1000_driver = {
186 .name = e1000_driver_name,
187 .id_table = e1000_pci_tbl,
188 .probe = e1000_probe,
189 .remove = __devexit_p(e1000_remove),
190 /* Power Managment Hooks */
192 .suspend = e1000_suspend,
193 .resume = e1000_resume
197 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
198 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
199 MODULE_LICENSE("GPL");
200 MODULE_VERSION(DRV_VERSION);
202 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
203 module_param(debug, int, 0);
204 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
207 * e1000_init_module - Driver Registration Routine
209 * e1000_init_module is the first routine called when the driver is
210 * loaded. All it does is register with the PCI subsystem.
214 e1000_init_module(void)
217 printk(KERN_INFO "%s - version %s\n",
218 e1000_driver_string, e1000_driver_version);
220 printk(KERN_INFO "%s\n", e1000_copyright);
222 ret = pci_module_init(&e1000_driver);
224 register_reboot_notifier(&e1000_notifier_reboot);
229 module_init(e1000_init_module);
232 * e1000_exit_module - Driver Exit Cleanup Routine
234 * e1000_exit_module is called just before the driver is removed
239 e1000_exit_module(void)
241 unregister_reboot_notifier(&e1000_notifier_reboot);
242 pci_unregister_driver(&e1000_driver);
245 module_exit(e1000_exit_module);
249 e1000_up(struct e1000_adapter *adapter)
251 struct net_device *netdev = adapter->netdev;
254 /* hardware has been reset, we need to reload some things */
256 /* Reset the PHY if it was previously powered down */
257 if(adapter->hw.media_type == e1000_media_type_copper) {
259 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
260 if(mii_reg & MII_CR_POWER_DOWN)
261 e1000_phy_reset(&adapter->hw);
264 e1000_set_multi(netdev);
266 e1000_restore_vlan(adapter);
268 e1000_configure_tx(adapter);
269 e1000_setup_rctl(adapter);
270 e1000_configure_rx(adapter);
271 e1000_alloc_rx_buffers(adapter);
273 if((err = request_irq(adapter->pdev->irq, &e1000_intr,
274 SA_SHIRQ | SA_SAMPLE_RANDOM,
275 netdev->name, netdev)))
278 mod_timer(&adapter->watchdog_timer, jiffies);
279 e1000_irq_enable(adapter);
285 e1000_down(struct e1000_adapter *adapter)
287 struct net_device *netdev = adapter->netdev;
289 e1000_irq_disable(adapter);
290 free_irq(adapter->pdev->irq, netdev);
291 del_timer_sync(&adapter->tx_fifo_stall_timer);
292 del_timer_sync(&adapter->watchdog_timer);
293 del_timer_sync(&adapter->phy_info_timer);
294 adapter->link_speed = 0;
295 adapter->link_duplex = 0;
296 netif_carrier_off(netdev);
297 netif_stop_queue(netdev);
299 e1000_reset(adapter);
300 e1000_clean_tx_ring(adapter);
301 e1000_clean_rx_ring(adapter);
303 /* If WoL is not enabled
304 * Power down the PHY so no link is implied when interface is down */
305 if(!adapter->wol && adapter->hw.media_type == e1000_media_type_copper) {
307 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
308 mii_reg |= MII_CR_POWER_DOWN;
309 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
314 e1000_reset(struct e1000_adapter *adapter)
318 /* Repartition Pba for greater than 9k mtu
319 * To take effect CTRL.RST is required.
322 if(adapter->hw.mac_type < e1000_82547) {
323 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
328 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
332 adapter->tx_fifo_head = 0;
333 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
334 adapter->tx_fifo_size =
335 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
336 atomic_set(&adapter->tx_fifo_stall, 0);
338 E1000_WRITE_REG(&adapter->hw, PBA, pba);
340 /* flow control settings */
341 adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -
343 adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -
345 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
346 adapter->hw.fc_send_xon = 1;
347 adapter->hw.fc = adapter->hw.original_fc;
349 e1000_reset_hw(&adapter->hw);
350 if(adapter->hw.mac_type >= e1000_82544)
351 E1000_WRITE_REG(&adapter->hw, WUC, 0);
352 if(e1000_init_hw(&adapter->hw))
353 DPRINTK(PROBE, ERR, "Hardware Error\n");
355 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
356 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
358 e1000_reset_adaptive(&adapter->hw);
359 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
363 * e1000_probe - Device Initialization Routine
364 * @pdev: PCI device information struct
365 * @ent: entry in e1000_pci_tbl
367 * Returns 0 on success, negative on failure
369 * e1000_probe initializes an adapter identified by a pci_dev structure.
370 * The OS initialization, configuring of the adapter private structure,
371 * and a hardware reset occur.
375 e1000_probe(struct pci_dev *pdev,
376 const struct pci_device_id *ent)
378 struct net_device *netdev;
379 struct e1000_adapter *adapter;
380 static int cards_found = 0;
381 unsigned long mmio_start;
386 uint16_t eeprom_data;
388 if((err = pci_enable_device(pdev)))
391 if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
394 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
395 E1000_ERR("No usable DMA configuration, aborting\n");
401 if((err = pci_request_regions(pdev, e1000_driver_name)))
404 pci_set_master(pdev);
406 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
409 goto err_alloc_etherdev;
412 SET_MODULE_OWNER(netdev);
413 SET_NETDEV_DEV(netdev, &pdev->dev);
415 pci_set_drvdata(pdev, netdev);
416 adapter = netdev->priv;
417 adapter->netdev = netdev;
418 adapter->pdev = pdev;
419 adapter->hw.back = adapter;
420 adapter->msg_enable = (1 << debug) - 1;
422 mmio_start = pci_resource_start(pdev, BAR_0);
423 mmio_len = pci_resource_len(pdev, BAR_0);
425 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
426 if(!adapter->hw.hw_addr) {
431 for(i = BAR_1; i <= BAR_5; i++) {
432 if(pci_resource_len(pdev, i) == 0)
434 if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
435 adapter->hw.io_base = pci_resource_start(pdev, i);
440 netdev->open = &e1000_open;
441 netdev->stop = &e1000_close;
442 netdev->hard_start_xmit = &e1000_xmit_frame;
443 netdev->get_stats = &e1000_get_stats;
444 netdev->set_multicast_list = &e1000_set_multi;
445 netdev->set_mac_address = &e1000_set_mac;
446 netdev->change_mtu = &e1000_change_mtu;
447 netdev->do_ioctl = &e1000_ioctl;
448 set_ethtool_ops(netdev);
449 netdev->tx_timeout = &e1000_tx_timeout;
450 netdev->watchdog_timeo = 5 * HZ;
451 #ifdef CONFIG_E1000_NAPI
452 netdev->poll = &e1000_clean;
455 netdev->vlan_rx_register = e1000_vlan_rx_register;
456 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
457 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
458 #ifdef CONFIG_NET_POLL_CONTROLLER
459 netdev->poll_controller = e1000_netpoll;
461 strcpy(netdev->name, pci_name(pdev));
463 netdev->mem_start = mmio_start;
464 netdev->mem_end = mmio_start + mmio_len;
465 netdev->base_addr = adapter->hw.io_base;
467 adapter->bd_number = cards_found;
469 /* setup the private structure */
471 if((err = e1000_sw_init(adapter)))
474 if(adapter->hw.mac_type >= e1000_82543) {
475 netdev->features = NETIF_F_SG |
479 NETIF_F_HW_VLAN_FILTER;
481 netdev->features = NETIF_F_SG;
485 /* Disbaled for now until root-cause is found for
486 * hangs reported against non-IA archs. TSO can be
487 * enabled using ethtool -K eth<x> tso on */
488 if((adapter->hw.mac_type >= e1000_82544) &&
489 (adapter->hw.mac_type != e1000_82547))
490 netdev->features |= NETIF_F_TSO;
493 netdev->features |= NETIF_F_HIGHDMA;
495 /* hard_start_xmit is safe against parallel locking */
496 netdev->features |= NETIF_F_LLTX;
498 /* before reading the EEPROM, reset the controller to
499 * put the device in a known good starting state */
501 e1000_reset_hw(&adapter->hw);
503 /* make sure the EEPROM is good */
505 if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
506 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
511 /* copy the MAC address out of the EEPROM */
513 if (e1000_read_mac_addr(&adapter->hw))
514 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
515 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
517 if(!is_valid_ether_addr(netdev->dev_addr)) {
518 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
523 e1000_read_part_num(&adapter->hw, &(adapter->part_num));
525 e1000_get_bus_info(&adapter->hw);
527 init_timer(&adapter->tx_fifo_stall_timer);
528 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
529 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
531 init_timer(&adapter->watchdog_timer);
532 adapter->watchdog_timer.function = &e1000_watchdog;
533 adapter->watchdog_timer.data = (unsigned long) adapter;
535 init_timer(&adapter->phy_info_timer);
536 adapter->phy_info_timer.function = &e1000_update_phy_info;
537 adapter->phy_info_timer.data = (unsigned long) adapter;
539 INIT_WORK(&adapter->tx_timeout_task,
540 (void (*)(void *))e1000_tx_timeout_task, netdev);
542 /* we're going to reset, so assume we have no link for now */
544 netif_carrier_off(netdev);
545 netif_stop_queue(netdev);
547 e1000_check_options(adapter);
549 /* Initial Wake on LAN setting
550 * If APM wake is enabled in the EEPROM,
551 * enable the ACPI Magic Packet filter
554 switch(adapter->hw.mac_type) {
555 case e1000_82542_rev2_0:
556 case e1000_82542_rev2_1:
560 case e1000_82546_rev_3:
561 if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
562 && (adapter->hw.media_type == e1000_media_type_copper)) {
563 e1000_read_eeprom(&adapter->hw,
564 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
569 e1000_read_eeprom(&adapter->hw,
570 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
573 if(eeprom_data & E1000_EEPROM_APME)
574 adapter->wol |= E1000_WUFC_MAG;
576 /* reset the hardware with the new settings */
577 e1000_reset(adapter);
579 strcpy(netdev->name, "eth%d");
580 if((err = register_netdev(netdev)))
583 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
591 iounmap(adapter->hw.hw_addr);
595 pci_release_regions(pdev);
600 * e1000_remove - Device Removal Routine
601 * @pdev: PCI device information struct
603 * e1000_remove is called by the PCI subsystem to alert the driver
604 * that it should release a PCI device. The could be caused by a
605 * Hot-Plug event, or because the driver is going to be removed from
609 static void __devexit
610 e1000_remove(struct pci_dev *pdev)
612 struct net_device *netdev = pci_get_drvdata(pdev);
613 struct e1000_adapter *adapter = netdev->priv;
616 if(adapter->hw.mac_type >= e1000_82540 &&
617 adapter->hw.media_type == e1000_media_type_copper) {
618 manc = E1000_READ_REG(&adapter->hw, MANC);
619 if(manc & E1000_MANC_SMBUS_EN) {
620 manc |= E1000_MANC_ARP_EN;
621 E1000_WRITE_REG(&adapter->hw, MANC, manc);
625 unregister_netdev(netdev);
627 e1000_phy_hw_reset(&adapter->hw);
629 iounmap(adapter->hw.hw_addr);
630 pci_release_regions(pdev);
634 pci_disable_device(pdev);
638 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
639 * @adapter: board private structure to initialize
641 * e1000_sw_init initializes the Adapter private data structure.
642 * Fields are initialized based on PCI device information and
643 * OS network device settings (MTU size).
647 e1000_sw_init(struct e1000_adapter *adapter)
649 struct e1000_hw *hw = &adapter->hw;
650 struct net_device *netdev = adapter->netdev;
651 struct pci_dev *pdev = adapter->pdev;
653 /* PCI config space info */
655 hw->vendor_id = pdev->vendor;
656 hw->device_id = pdev->device;
657 hw->subsystem_vendor_id = pdev->subsystem_vendor;
658 hw->subsystem_id = pdev->subsystem_device;
660 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
662 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
664 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
665 hw->max_frame_size = netdev->mtu +
666 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
667 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
669 /* identify the MAC */
671 if(e1000_set_mac_type(hw)) {
672 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
676 /* initialize eeprom parameters */
678 e1000_init_eeprom_params(hw);
680 switch(hw->mac_type) {
685 case e1000_82541_rev_2:
686 case e1000_82547_rev_2:
687 hw->phy_init_script = 1;
691 e1000_set_media_type(hw);
693 hw->wait_autoneg_complete = FALSE;
694 hw->tbi_compatibility_en = TRUE;
695 hw->adaptive_ifs = TRUE;
699 if(hw->media_type == e1000_media_type_copper) {
700 hw->mdix = AUTO_ALL_MODES;
701 hw->disable_polarity_correction = FALSE;
702 hw->master_slave = E1000_MASTER_SLAVE;
705 atomic_set(&adapter->irq_sem, 1);
706 spin_lock_init(&adapter->stats_lock);
707 spin_lock_init(&adapter->tx_lock);
713 * e1000_open - Called when a network interface is made active
714 * @netdev: network interface device structure
716 * Returns 0 on success, negative value on failure
718 * The open entry point is called when a network interface is made
719 * active by the system (IFF_UP). At this point all resources needed
720 * for transmit and receive operations are allocated, the interrupt
721 * handler is registered with the OS, the watchdog timer is started,
722 * and the stack is notified that the interface is ready.
726 e1000_open(struct net_device *netdev)
728 struct e1000_adapter *adapter = netdev->priv;
731 /* allocate transmit descriptors */
733 if((err = e1000_setup_tx_resources(adapter)))
736 /* allocate receive descriptors */
738 if((err = e1000_setup_rx_resources(adapter)))
741 if((err = e1000_up(adapter)))
744 return E1000_SUCCESS;
747 e1000_free_rx_resources(adapter);
749 e1000_free_tx_resources(adapter);
751 e1000_reset(adapter);
757 * e1000_close - Disables a network interface
758 * @netdev: network interface device structure
760 * Returns 0, this is not allowed to fail
762 * The close entry point is called when an interface is de-activated
763 * by the OS. The hardware is still under the drivers control, but
764 * needs to be disabled. A global MAC reset is issued to stop the
765 * hardware, and all transmit and receive resources are freed.
769 e1000_close(struct net_device *netdev)
771 struct e1000_adapter *adapter = netdev->priv;
775 e1000_free_tx_resources(adapter);
776 e1000_free_rx_resources(adapter);
782 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
783 * @adapter: address of board private structure
784 * @begin: address of beginning of memory
785 * @end: address of end of memory
787 static inline boolean_t
788 e1000_check_64k_bound(struct e1000_adapter *adapter,
789 void *start, unsigned long len)
791 unsigned long begin = (unsigned long) start;
792 unsigned long end = begin + len;
794 /* first rev 82545 and 82546 need to not allow any memory
795 * write location to cross a 64k boundary due to errata 23 */
796 if (adapter->hw.mac_type == e1000_82545 ||
797 adapter->hw.mac_type == e1000_82546
799 /* check buffer doesn't cross 64kB */
800 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
807 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
808 * @adapter: board private structure
810 * Return 0 on success, negative on failure
814 e1000_setup_tx_resources(struct e1000_adapter *adapter)
816 struct e1000_desc_ring *txdr = &adapter->tx_ring;
817 struct pci_dev *pdev = adapter->pdev;
820 size = sizeof(struct e1000_buffer) * txdr->count;
821 txdr->buffer_info = vmalloc(size);
822 if(!txdr->buffer_info) {
824 "Unable to Allocate Memory for the Transmit descriptor ring\n");
827 memset(txdr->buffer_info, 0, size);
829 /* round up to nearest 4K */
831 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
832 E1000_ROUNDUP(txdr->size, 4096);
834 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
838 "Unable to Allocate Memory for the Transmit descriptor ring\n");
839 vfree(txdr->buffer_info);
843 /* fix for errata 23, cant cross 64kB boundary */
844 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
845 void *olddesc = txdr->desc;
846 dma_addr_t olddma = txdr->dma;
847 DPRINTK(TX_ERR,ERR,"txdr align check failed: %u bytes at %p\n",
848 txdr->size, txdr->desc);
849 /* try again, without freeing the previous */
850 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
851 /* failed allocation, critial failure */
853 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
854 goto setup_tx_desc_die;
857 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
859 pci_free_consistent(pdev, txdr->size,
860 txdr->desc, txdr->dma);
861 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
863 "Unable to Allocate aligned Memory for the Transmit"
864 " descriptor ring\n");
865 vfree(txdr->buffer_info);
868 /* free old, move on with the new one since its okay */
869 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
872 memset(txdr->desc, 0, txdr->size);
874 txdr->next_to_use = 0;
875 txdr->next_to_clean = 0;
881 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
882 * @adapter: board private structure
884 * Configure the Tx unit of the MAC after a reset.
888 e1000_configure_tx(struct e1000_adapter *adapter)
890 uint64_t tdba = adapter->tx_ring.dma;
891 uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc);
894 E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL));
895 E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
897 E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen);
899 /* Setup the HW Tx Head and Tail descriptor pointers */
901 E1000_WRITE_REG(&adapter->hw, TDH, 0);
902 E1000_WRITE_REG(&adapter->hw, TDT, 0);
904 /* Set the default values for the Tx Inter Packet Gap timer */
906 switch (adapter->hw.mac_type) {
907 case e1000_82542_rev2_0:
908 case e1000_82542_rev2_1:
909 tipg = DEFAULT_82542_TIPG_IPGT;
910 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
911 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
914 if(adapter->hw.media_type == e1000_media_type_fiber ||
915 adapter->hw.media_type == e1000_media_type_internal_serdes)
916 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
918 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
919 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
920 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
922 E1000_WRITE_REG(&adapter->hw, TIPG, tipg);
924 /* Set the Tx Interrupt Delay register */
926 E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
927 if(adapter->hw.mac_type >= e1000_82540)
928 E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay);
930 /* Program the Transmit Control Register */
932 tctl = E1000_READ_REG(&adapter->hw, TCTL);
934 tctl &= ~E1000_TCTL_CT;
935 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
936 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
938 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
940 e1000_config_collision_dist(&adapter->hw);
942 /* Setup Transmit Descriptor Settings for eop descriptor */
943 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
946 if(adapter->hw.mac_type < e1000_82543)
947 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
949 adapter->txd_cmd |= E1000_TXD_CMD_RS;
951 /* Cache if we're 82544 running in PCI-X because we'll
952 * need this to apply a workaround later in the send path. */
953 if(adapter->hw.mac_type == e1000_82544 &&
954 adapter->hw.bus_type == e1000_bus_type_pcix)
955 adapter->pcix_82544 = 1;
959 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
960 * @adapter: board private structure
962 * Returns 0 on success, negative on failure
966 e1000_setup_rx_resources(struct e1000_adapter *adapter)
968 struct e1000_desc_ring *rxdr = &adapter->rx_ring;
969 struct pci_dev *pdev = adapter->pdev;
972 size = sizeof(struct e1000_buffer) * rxdr->count;
973 rxdr->buffer_info = vmalloc(size);
974 if(!rxdr->buffer_info) {
976 "Unable to Allocate Memory for the Recieve descriptor ring\n");
979 memset(rxdr->buffer_info, 0, size);
981 /* Round up to nearest 4K */
983 rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
984 E1000_ROUNDUP(rxdr->size, 4096);
986 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
991 "Unable to Allocate Memory for the Recieve descriptor ring\n");
992 vfree(rxdr->buffer_info);
995 /* fix for errata 23, cant cross 64kB boundary */
996 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
997 void *olddesc = rxdr->desc;
998 dma_addr_t olddma = rxdr->dma;
1000 "rxdr align check failed: %u bytes at %p\n",
1001 rxdr->size, rxdr->desc);
1002 /* try again, without freeing the previous */
1003 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1004 /* failed allocation, critial failure */
1006 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1007 goto setup_rx_desc_die;
1010 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1012 pci_free_consistent(pdev, rxdr->size,
1013 rxdr->desc, rxdr->dma);
1014 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1016 "Unable to Allocate aligned Memory for the"
1017 " Receive descriptor ring\n");
1018 vfree(rxdr->buffer_info);
1021 /* free old, move on with the new one since its okay */
1022 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1025 memset(rxdr->desc, 0, rxdr->size);
1027 rxdr->next_to_clean = 0;
1028 rxdr->next_to_use = 0;
1034 * e1000_setup_rctl - configure the receive control register
1035 * @adapter: Board private structure
1039 e1000_setup_rctl(struct e1000_adapter *adapter)
1043 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1045 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1047 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1048 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1049 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
1051 if(adapter->hw.tbi_compatibility_on == 1)
1052 rctl |= E1000_RCTL_SBP;
1054 rctl &= ~E1000_RCTL_SBP;
1056 /* Setup buffer sizes */
1057 rctl &= ~(E1000_RCTL_SZ_4096);
1058 rctl |= (E1000_RCTL_BSEX | E1000_RCTL_LPE);
1059 switch (adapter->rx_buffer_len) {
1060 case E1000_RXBUFFER_2048:
1062 rctl |= E1000_RCTL_SZ_2048;
1063 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
1065 case E1000_RXBUFFER_4096:
1066 rctl |= E1000_RCTL_SZ_4096;
1068 case E1000_RXBUFFER_8192:
1069 rctl |= E1000_RCTL_SZ_8192;
1071 case E1000_RXBUFFER_16384:
1072 rctl |= E1000_RCTL_SZ_16384;
1076 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1080 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1081 * @adapter: board private structure
1083 * Configure the Rx unit of the MAC after a reset.
1087 e1000_configure_rx(struct e1000_adapter *adapter)
1089 uint64_t rdba = adapter->rx_ring.dma;
1090 uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc);
1094 /* disable receives while setting up the descriptors */
1095 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1096 E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN);
1098 /* set the Receive Delay Timer Register */
1099 E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay);
1101 if(adapter->hw.mac_type >= e1000_82540) {
1102 E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay);
1103 if(adapter->itr > 1)
1104 E1000_WRITE_REG(&adapter->hw, ITR,
1105 1000000000 / (adapter->itr * 256));
1108 /* Setup the Base and Length of the Rx Descriptor Ring */
1109 E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1110 E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
1112 E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen);
1114 /* Setup the HW Rx Head and Tail Descriptor Pointers */
1115 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1116 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1118 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1119 if((adapter->hw.mac_type >= e1000_82543) &&
1120 (adapter->rx_csum == TRUE)) {
1121 rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM);
1122 rxcsum |= E1000_RXCSUM_TUOFL;
1123 E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum);
1126 /* Enable Receives */
1127 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1131 * e1000_free_tx_resources - Free Tx Resources
1132 * @adapter: board private structure
1134 * Free all transmit software resources
1138 e1000_free_tx_resources(struct e1000_adapter *adapter)
1140 struct pci_dev *pdev = adapter->pdev;
1142 e1000_clean_tx_ring(adapter);
1144 vfree(adapter->tx_ring.buffer_info);
1145 adapter->tx_ring.buffer_info = NULL;
1147 pci_free_consistent(pdev, adapter->tx_ring.size,
1148 adapter->tx_ring.desc, adapter->tx_ring.dma);
1150 adapter->tx_ring.desc = NULL;
1154 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1155 struct e1000_buffer *buffer_info)
1157 struct pci_dev *pdev = adapter->pdev;
1159 if(buffer_info->dma) {
1160 pci_unmap_page(pdev,
1162 buffer_info->length,
1164 buffer_info->dma = 0;
1166 if(buffer_info->skb) {
1167 dev_kfree_skb_any(buffer_info->skb);
1168 buffer_info->skb = NULL;
1173 * e1000_clean_tx_ring - Free Tx Buffers
1174 * @adapter: board private structure
1178 e1000_clean_tx_ring(struct e1000_adapter *adapter)
1180 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1181 struct e1000_buffer *buffer_info;
1185 /* Free all the Tx ring sk_buffs */
1187 if (likely(adapter->previous_buffer_info.skb != NULL)) {
1188 e1000_unmap_and_free_tx_resource(adapter,
1189 &adapter->previous_buffer_info);
1192 for(i = 0; i < tx_ring->count; i++) {
1193 buffer_info = &tx_ring->buffer_info[i];
1194 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
1197 size = sizeof(struct e1000_buffer) * tx_ring->count;
1198 memset(tx_ring->buffer_info, 0, size);
1200 /* Zero out the descriptor ring */
1202 memset(tx_ring->desc, 0, tx_ring->size);
1204 tx_ring->next_to_use = 0;
1205 tx_ring->next_to_clean = 0;
1207 E1000_WRITE_REG(&adapter->hw, TDH, 0);
1208 E1000_WRITE_REG(&adapter->hw, TDT, 0);
1212 * e1000_free_rx_resources - Free Rx Resources
1213 * @adapter: board private structure
1215 * Free all receive software resources
1219 e1000_free_rx_resources(struct e1000_adapter *adapter)
1221 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1222 struct pci_dev *pdev = adapter->pdev;
1224 e1000_clean_rx_ring(adapter);
1226 vfree(rx_ring->buffer_info);
1227 rx_ring->buffer_info = NULL;
1229 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1231 rx_ring->desc = NULL;
1235 * e1000_clean_rx_ring - Free Rx Buffers
1236 * @adapter: board private structure
1240 e1000_clean_rx_ring(struct e1000_adapter *adapter)
1242 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1243 struct e1000_buffer *buffer_info;
1244 struct pci_dev *pdev = adapter->pdev;
1248 /* Free all the Rx ring sk_buffs */
1250 for(i = 0; i < rx_ring->count; i++) {
1251 buffer_info = &rx_ring->buffer_info[i];
1252 if(buffer_info->skb) {
1254 pci_unmap_single(pdev,
1256 buffer_info->length,
1257 PCI_DMA_FROMDEVICE);
1259 dev_kfree_skb(buffer_info->skb);
1260 buffer_info->skb = NULL;
1264 size = sizeof(struct e1000_buffer) * rx_ring->count;
1265 memset(rx_ring->buffer_info, 0, size);
1267 /* Zero out the descriptor ring */
1269 memset(rx_ring->desc, 0, rx_ring->size);
1271 rx_ring->next_to_clean = 0;
1272 rx_ring->next_to_use = 0;
1274 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1275 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1278 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1279 * and memory write and invalidate disabled for certain operations
1282 e1000_enter_82542_rst(struct e1000_adapter *adapter)
1284 struct net_device *netdev = adapter->netdev;
1287 e1000_pci_clear_mwi(&adapter->hw);
1289 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1290 rctl |= E1000_RCTL_RST;
1291 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1292 E1000_WRITE_FLUSH(&adapter->hw);
1295 if(netif_running(netdev))
1296 e1000_clean_rx_ring(adapter);
1300 e1000_leave_82542_rst(struct e1000_adapter *adapter)
1302 struct net_device *netdev = adapter->netdev;
1305 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1306 rctl &= ~E1000_RCTL_RST;
1307 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1308 E1000_WRITE_FLUSH(&adapter->hw);
1311 if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
1312 e1000_pci_set_mwi(&adapter->hw);
1314 if(netif_running(netdev)) {
1315 e1000_configure_rx(adapter);
1316 e1000_alloc_rx_buffers(adapter);
1321 * e1000_set_mac - Change the Ethernet Address of the NIC
1322 * @netdev: network interface device structure
1323 * @p: pointer to an address structure
1325 * Returns 0 on success, negative on failure
1329 e1000_set_mac(struct net_device *netdev, void *p)
1331 struct e1000_adapter *adapter = netdev->priv;
1332 struct sockaddr *addr = p;
1334 if(!is_valid_ether_addr(addr->sa_data))
1335 return -EADDRNOTAVAIL;
1337 /* 82542 2.0 needs to be in reset to write receive address registers */
1339 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1340 e1000_enter_82542_rst(adapter);
1342 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1343 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
1345 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
1347 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1348 e1000_leave_82542_rst(adapter);
1354 * e1000_set_multi - Multicast and Promiscuous mode set
1355 * @netdev: network interface device structure
1357 * The set_multi entry point is called whenever the multicast address
1358 * list or the network interface flags are updated. This routine is
1359 * responsible for configuring the hardware for proper multicast,
1360 * promiscuous mode, and all-multi behavior.
1364 e1000_set_multi(struct net_device *netdev)
1366 struct e1000_adapter *adapter = netdev->priv;
1367 struct e1000_hw *hw = &adapter->hw;
1368 struct dev_mc_list *mc_ptr;
1370 uint32_t hash_value;
1372 unsigned long flags;
1374 /* Check for Promiscuous and All Multicast modes */
1376 spin_lock_irqsave(&adapter->tx_lock, flags);
1378 rctl = E1000_READ_REG(hw, RCTL);
1380 if(netdev->flags & IFF_PROMISC) {
1381 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1382 } else if(netdev->flags & IFF_ALLMULTI) {
1383 rctl |= E1000_RCTL_MPE;
1384 rctl &= ~E1000_RCTL_UPE;
1386 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
1389 E1000_WRITE_REG(hw, RCTL, rctl);
1391 /* 82542 2.0 needs to be in reset to write receive address registers */
1393 if(hw->mac_type == e1000_82542_rev2_0)
1394 e1000_enter_82542_rst(adapter);
1396 /* load the first 14 multicast address into the exact filters 1-14
1397 * RAR 0 is used for the station MAC adddress
1398 * if there are not 14 addresses, go ahead and clear the filters
1400 mc_ptr = netdev->mc_list;
1402 for(i = 1; i < E1000_RAR_ENTRIES; i++) {
1404 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
1405 mc_ptr = mc_ptr->next;
1407 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
1408 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
1412 /* clear the old settings from the multicast hash table */
1414 for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
1415 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1417 /* load any remaining addresses into the hash table */
1419 for(; mc_ptr; mc_ptr = mc_ptr->next) {
1420 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
1421 e1000_mta_set(hw, hash_value);
1424 if(hw->mac_type == e1000_82542_rev2_0)
1425 e1000_leave_82542_rst(adapter);
1427 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1430 /* Need to wait a few seconds after link up to get diagnostic information from
1434 e1000_update_phy_info(unsigned long data)
1436 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1437 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
1441 * e1000_82547_tx_fifo_stall - Timer Call-back
1442 * @data: pointer to adapter cast into an unsigned long
1446 e1000_82547_tx_fifo_stall(unsigned long data)
1448 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1449 struct net_device *netdev = adapter->netdev;
1452 if(atomic_read(&adapter->tx_fifo_stall)) {
1453 if((E1000_READ_REG(&adapter->hw, TDT) ==
1454 E1000_READ_REG(&adapter->hw, TDH)) &&
1455 (E1000_READ_REG(&adapter->hw, TDFT) ==
1456 E1000_READ_REG(&adapter->hw, TDFH)) &&
1457 (E1000_READ_REG(&adapter->hw, TDFTS) ==
1458 E1000_READ_REG(&adapter->hw, TDFHS))) {
1459 tctl = E1000_READ_REG(&adapter->hw, TCTL);
1460 E1000_WRITE_REG(&adapter->hw, TCTL,
1461 tctl & ~E1000_TCTL_EN);
1462 E1000_WRITE_REG(&adapter->hw, TDFT,
1463 adapter->tx_head_addr);
1464 E1000_WRITE_REG(&adapter->hw, TDFH,
1465 adapter->tx_head_addr);
1466 E1000_WRITE_REG(&adapter->hw, TDFTS,
1467 adapter->tx_head_addr);
1468 E1000_WRITE_REG(&adapter->hw, TDFHS,
1469 adapter->tx_head_addr);
1470 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
1471 E1000_WRITE_FLUSH(&adapter->hw);
1473 adapter->tx_fifo_head = 0;
1474 atomic_set(&adapter->tx_fifo_stall, 0);
1475 netif_wake_queue(netdev);
1477 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
1483 * e1000_watchdog - Timer Call-back
1484 * @data: pointer to netdev cast into an unsigned long
1488 e1000_watchdog(unsigned long data)
1490 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1491 struct net_device *netdev = adapter->netdev;
1492 struct e1000_desc_ring *txdr = &adapter->tx_ring;
1496 e1000_check_for_link(&adapter->hw);
1498 if((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
1499 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
1500 link = !adapter->hw.serdes_link_down;
1502 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
1505 if(!netif_carrier_ok(netdev)) {
1506 e1000_get_speed_and_duplex(&adapter->hw,
1507 &adapter->link_speed,
1508 &adapter->link_duplex);
1510 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
1511 adapter->link_speed,
1512 adapter->link_duplex == FULL_DUPLEX ?
1513 "Full Duplex" : "Half Duplex");
1515 netif_carrier_on(netdev);
1516 netif_wake_queue(netdev);
1517 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1518 adapter->smartspeed = 0;
1521 if(netif_carrier_ok(netdev)) {
1522 adapter->link_speed = 0;
1523 adapter->link_duplex = 0;
1524 DPRINTK(LINK, INFO, "NIC Link is Down\n");
1525 netif_carrier_off(netdev);
1526 netif_stop_queue(netdev);
1527 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1530 e1000_smartspeed(adapter);
1533 e1000_update_stats(adapter);
1535 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
1536 adapter->tpt_old = adapter->stats.tpt;
1537 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
1538 adapter->colc_old = adapter->stats.colc;
1540 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
1541 adapter->gorcl_old = adapter->stats.gorcl;
1542 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
1543 adapter->gotcl_old = adapter->stats.gotcl;
1545 e1000_update_adaptive(&adapter->hw);
1547 if(!netif_carrier_ok(netdev)) {
1548 if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
1549 /* We've lost link, so the controller stops DMA,
1550 * but we've got queued Tx work that's never going
1551 * to get done, so reset controller to flush Tx.
1552 * (Do the reset outside of interrupt context). */
1553 schedule_work(&adapter->tx_timeout_task);
1557 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
1558 if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
1559 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
1560 * asymmetrical Tx or Rx gets ITR=8000; everyone
1561 * else is between 2000-8000. */
1562 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
1563 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
1564 adapter->gotcl - adapter->gorcl :
1565 adapter->gorcl - adapter->gotcl) / 10000;
1566 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
1567 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
1570 /* Cause software interrupt to ensure rx ring is cleaned */
1571 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
1573 /* Early detection of hung controller */
1574 i = txdr->next_to_clean;
1575 if(txdr->buffer_info[i].dma &&
1576 time_after(jiffies, txdr->buffer_info[i].time_stamp + HZ) &&
1577 !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF))
1578 netif_stop_queue(netdev);
1580 /* Reset the timer */
1581 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1584 #define E1000_TX_FLAGS_CSUM 0x00000001
1585 #define E1000_TX_FLAGS_VLAN 0x00000002
1586 #define E1000_TX_FLAGS_TSO 0x00000004
1587 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
1588 #define E1000_TX_FLAGS_VLAN_SHIFT 16
1590 static inline boolean_t
1591 e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb)
1594 struct e1000_context_desc *context_desc;
1596 uint32_t cmd_length = 0;
1597 uint16_t ipcse, tucse, mss;
1598 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
1600 if(skb_shinfo(skb)->tso_size) {
1601 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
1602 mss = skb_shinfo(skb)->tso_size;
1603 skb->nh.iph->tot_len = 0;
1604 skb->nh.iph->check = 0;
1605 skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
1610 ipcss = skb->nh.raw - skb->data;
1611 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
1612 ipcse = skb->h.raw - skb->data - 1;
1613 tucss = skb->h.raw - skb->data;
1614 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
1617 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
1618 E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP |
1619 (skb->len - (hdr_len)));
1621 i = adapter->tx_ring.next_to_use;
1622 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1624 context_desc->lower_setup.ip_fields.ipcss = ipcss;
1625 context_desc->lower_setup.ip_fields.ipcso = ipcso;
1626 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
1627 context_desc->upper_setup.tcp_fields.tucss = tucss;
1628 context_desc->upper_setup.tcp_fields.tucso = tucso;
1629 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
1630 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
1631 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
1632 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
1634 if(++i == adapter->tx_ring.count) i = 0;
1635 adapter->tx_ring.next_to_use = i;
1644 static inline boolean_t
1645 e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
1647 struct e1000_context_desc *context_desc;
1651 if(likely(skb->ip_summed == CHECKSUM_HW)) {
1652 css = skb->h.raw - skb->data;
1654 i = adapter->tx_ring.next_to_use;
1655 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1657 context_desc->upper_setup.tcp_fields.tucss = css;
1658 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
1659 context_desc->upper_setup.tcp_fields.tucse = 0;
1660 context_desc->tcp_seg_setup.data = 0;
1661 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
1663 if(unlikely(++i == adapter->tx_ring.count)) i = 0;
1664 adapter->tx_ring.next_to_use = i;
1672 #define E1000_MAX_TXD_PWR 12
1673 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
1676 e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb,
1677 unsigned int first, unsigned int max_per_txd,
1678 unsigned int nr_frags, unsigned int mss)
1680 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1681 struct e1000_buffer *buffer_info;
1682 unsigned int len = skb->len;
1683 unsigned int offset = 0, size, count = 0, i;
1685 len -= skb->data_len;
1687 i = tx_ring->next_to_use;
1690 buffer_info = &tx_ring->buffer_info[i];
1691 size = min(len, max_per_txd);
1693 /* Workaround for premature desc write-backs
1694 * in TSO mode. Append 4-byte sentinel desc */
1695 if(unlikely(mss && !nr_frags && size == len && size > 8))
1698 /* Workaround for potential 82544 hang in PCI-X. Avoid
1699 * terminating buffers within evenly-aligned dwords. */
1700 if(unlikely(adapter->pcix_82544 &&
1701 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
1705 buffer_info->length = size;
1707 pci_map_single(adapter->pdev,
1711 buffer_info->time_stamp = jiffies;
1716 if(unlikely(++i == tx_ring->count)) i = 0;
1719 for(f = 0; f < nr_frags; f++) {
1720 struct skb_frag_struct *frag;
1722 frag = &skb_shinfo(skb)->frags[f];
1724 offset = frag->page_offset;
1727 buffer_info = &tx_ring->buffer_info[i];
1728 size = min(len, max_per_txd);
1730 /* Workaround for premature desc write-backs
1731 * in TSO mode. Append 4-byte sentinel desc */
1732 if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
1735 /* Workaround for potential 82544 hang in PCI-X.
1736 * Avoid terminating buffers within evenly-aligned
1738 if(unlikely(adapter->pcix_82544 &&
1739 !((unsigned long)(frag->page+offset+size-1) & 4) &&
1743 buffer_info->length = size;
1745 pci_map_page(adapter->pdev,
1750 buffer_info->time_stamp = jiffies;
1755 if(unlikely(++i == tx_ring->count)) i = 0;
1759 i = (i == 0) ? tx_ring->count - 1 : i - 1;
1760 tx_ring->buffer_info[i].skb = skb;
1761 tx_ring->buffer_info[first].next_to_watch = i;
1767 e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
1769 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1770 struct e1000_tx_desc *tx_desc = NULL;
1771 struct e1000_buffer *buffer_info;
1772 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
1775 if(likely(tx_flags & E1000_TX_FLAGS_TSO)) {
1776 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
1778 txd_upper |= (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8;
1781 if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
1782 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
1783 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
1786 if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
1787 txd_lower |= E1000_TXD_CMD_VLE;
1788 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
1791 i = tx_ring->next_to_use;
1794 buffer_info = &tx_ring->buffer_info[i];
1795 tx_desc = E1000_TX_DESC(*tx_ring, i);
1796 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1797 tx_desc->lower.data =
1798 cpu_to_le32(txd_lower | buffer_info->length);
1799 tx_desc->upper.data = cpu_to_le32(txd_upper);
1800 if(unlikely(++i == tx_ring->count)) i = 0;
1803 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
1805 /* Force memory writes to complete before letting h/w
1806 * know there are new descriptors to fetch. (Only
1807 * applicable for weak-ordered memory model archs,
1808 * such as IA-64). */
1811 tx_ring->next_to_use = i;
1812 E1000_WRITE_REG(&adapter->hw, TDT, i);
1816 * 82547 workaround to avoid controller hang in half-duplex environment.
1817 * The workaround is to avoid queuing a large packet that would span
1818 * the internal Tx FIFO ring boundary by notifying the stack to resend
1819 * the packet at a later time. This gives the Tx FIFO an opportunity to
1820 * flush all packets. When that occurs, we reset the Tx FIFO pointers
1821 * to the beginning of the Tx FIFO.
1824 #define E1000_FIFO_HDR 0x10
1825 #define E1000_82547_PAD_LEN 0x3E0
1828 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
1830 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
1831 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
1833 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
1835 if(adapter->link_duplex != HALF_DUPLEX)
1836 goto no_fifo_stall_required;
1838 if(atomic_read(&adapter->tx_fifo_stall))
1841 if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
1842 atomic_set(&adapter->tx_fifo_stall, 1);
1846 no_fifo_stall_required:
1847 adapter->tx_fifo_head += skb_fifo_len;
1848 if(adapter->tx_fifo_head >= adapter->tx_fifo_size)
1849 adapter->tx_fifo_head -= adapter->tx_fifo_size;
1853 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
1855 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1857 struct e1000_adapter *adapter = netdev->priv;
1858 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
1859 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
1860 unsigned int tx_flags = 0;
1861 unsigned int len = skb->len;
1862 unsigned long flags;
1863 unsigned int nr_frags = 0;
1864 unsigned int mss = 0;
1867 nr_frags = skb_shinfo(skb)->nr_frags;
1868 len -= skb->data_len;
1870 if(unlikely(skb->len <= 0)) {
1871 dev_kfree_skb_any(skb);
1872 return NETDEV_TX_OK;
1876 mss = skb_shinfo(skb)->tso_size;
1877 /* The controller does a simple calculation to
1878 * make sure there is enough room in the FIFO before
1879 * initiating the DMA for each buffer. The calc is:
1880 * 4 = ceil(buffer len/mss). To make sure we don't
1881 * overrun the FIFO, adjust the max buffer len if mss
1884 max_per_txd = min(mss << 2, max_per_txd);
1885 max_txd_pwr = fls(max_per_txd) - 1;
1888 if((mss) || (skb->ip_summed == CHECKSUM_HW))
1890 count++; /* for sentinel desc */
1892 if(skb->ip_summed == CHECKSUM_HW)
1895 count += TXD_USE_COUNT(len, max_txd_pwr);
1897 if(adapter->pcix_82544)
1900 nr_frags = skb_shinfo(skb)->nr_frags;
1901 for(f = 0; f < nr_frags; f++)
1902 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
1904 if(adapter->pcix_82544)
1907 local_irq_save(flags);
1908 if (!spin_trylock(&adapter->tx_lock)) {
1909 /* Collision - tell upper layer to requeue */
1910 local_irq_restore(flags);
1911 return NETDEV_TX_LOCKED;
1914 /* need: count + 2 desc gap to keep tail from touching
1915 * head, otherwise try next time */
1916 if(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2) {
1917 netif_stop_queue(netdev);
1918 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1919 return NETDEV_TX_BUSY;
1922 if(unlikely(adapter->hw.mac_type == e1000_82547)) {
1923 if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
1924 netif_stop_queue(netdev);
1925 mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
1926 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1927 return NETDEV_TX_BUSY;
1931 if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
1932 tx_flags |= E1000_TX_FLAGS_VLAN;
1933 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
1936 first = adapter->tx_ring.next_to_use;
1938 if(likely(e1000_tso(adapter, skb)))
1939 tx_flags |= E1000_TX_FLAGS_TSO;
1940 else if(likely(e1000_tx_csum(adapter, skb)))
1941 tx_flags |= E1000_TX_FLAGS_CSUM;
1943 e1000_tx_queue(adapter,
1944 e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss),
1947 netdev->trans_start = jiffies;
1949 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1950 return NETDEV_TX_OK;
1954 * e1000_tx_timeout - Respond to a Tx Hang
1955 * @netdev: network interface device structure
1959 e1000_tx_timeout(struct net_device *netdev)
1961 struct e1000_adapter *adapter = netdev->priv;
1963 /* Do the reset outside of interrupt context */
1964 schedule_work(&adapter->tx_timeout_task);
1968 e1000_tx_timeout_task(struct net_device *netdev)
1970 struct e1000_adapter *adapter = netdev->priv;
1972 e1000_down(adapter);
1977 * e1000_get_stats - Get System Network Statistics
1978 * @netdev: network interface device structure
1980 * Returns the address of the device statistics structure.
1981 * The statistics are actually updated from the timer callback.
1984 static struct net_device_stats *
1985 e1000_get_stats(struct net_device *netdev)
1987 struct e1000_adapter *adapter = netdev->priv;
1989 e1000_update_stats(adapter);
1990 return &adapter->net_stats;
1994 * e1000_change_mtu - Change the Maximum Transfer Unit
1995 * @netdev: network interface device structure
1996 * @new_mtu: new value for maximum frame size
1998 * Returns 0 on success, negative on failure
2002 e1000_change_mtu(struct net_device *netdev, int new_mtu)
2004 struct e1000_adapter *adapter = netdev->priv;
2005 int old_mtu = adapter->rx_buffer_len;
2006 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
2008 if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
2009 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2010 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
2014 if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) {
2015 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
2017 } else if(adapter->hw.mac_type < e1000_82543) {
2018 DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n");
2021 } else if(max_frame <= E1000_RXBUFFER_4096) {
2022 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
2024 } else if(max_frame <= E1000_RXBUFFER_8192) {
2025 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
2028 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
2031 if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
2032 e1000_down(adapter);
2036 netdev->mtu = new_mtu;
2037 adapter->hw.max_frame_size = max_frame;
2043 * e1000_update_stats - Update the board statistics counters
2044 * @adapter: board private structure
2048 e1000_update_stats(struct e1000_adapter *adapter)
2050 struct e1000_hw *hw = &adapter->hw;
2051 unsigned long flags;
2054 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2056 spin_lock_irqsave(&adapter->stats_lock, flags);
2058 /* these counters are modified from e1000_adjust_tbi_stats,
2059 * called from the interrupt context, so they must only
2060 * be written while holding adapter->stats_lock
2063 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
2064 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
2065 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
2066 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
2067 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
2068 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
2069 adapter->stats.roc += E1000_READ_REG(hw, ROC);
2070 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
2071 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
2072 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
2073 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
2074 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
2075 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
2077 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
2078 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
2079 adapter->stats.scc += E1000_READ_REG(hw, SCC);
2080 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
2081 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
2082 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
2083 adapter->stats.dc += E1000_READ_REG(hw, DC);
2084 adapter->stats.sec += E1000_READ_REG(hw, SEC);
2085 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
2086 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
2087 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
2088 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
2089 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
2090 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
2091 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
2092 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
2093 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
2094 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
2095 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
2096 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
2097 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
2098 adapter->stats.torl += E1000_READ_REG(hw, TORL);
2099 adapter->stats.torh += E1000_READ_REG(hw, TORH);
2100 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
2101 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
2102 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
2103 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
2104 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
2105 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
2106 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
2107 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
2108 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
2109 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
2110 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
2112 /* used for adaptive IFS */
2114 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
2115 adapter->stats.tpt += hw->tx_packet_delta;
2116 hw->collision_delta = E1000_READ_REG(hw, COLC);
2117 adapter->stats.colc += hw->collision_delta;
2119 if(hw->mac_type >= e1000_82543) {
2120 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
2121 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
2122 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
2123 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
2124 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
2125 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
2128 /* Fill out the OS statistics structure */
2130 adapter->net_stats.rx_packets = adapter->stats.gprc;
2131 adapter->net_stats.tx_packets = adapter->stats.gptc;
2132 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
2133 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
2134 adapter->net_stats.multicast = adapter->stats.mprc;
2135 adapter->net_stats.collisions = adapter->stats.colc;
2139 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2140 adapter->stats.crcerrs + adapter->stats.algnerrc +
2141 adapter->stats.rlec + adapter->stats.rnbc +
2142 adapter->stats.mpc + adapter->stats.cexterr;
2143 adapter->net_stats.rx_dropped = adapter->stats.rnbc;
2144 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
2145 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2146 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2147 adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
2148 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2152 adapter->net_stats.tx_errors = adapter->stats.ecol +
2153 adapter->stats.latecol;
2154 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2155 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2156 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2158 /* Tx Dropped needs to be maintained elsewhere */
2162 if(hw->media_type == e1000_media_type_copper) {
2163 if((adapter->link_speed == SPEED_1000) &&
2164 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
2165 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2166 adapter->phy_stats.idle_errors += phy_tmp;
2169 if((hw->mac_type <= e1000_82546) &&
2170 (hw->phy_type == e1000_phy_m88) &&
2171 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
2172 adapter->phy_stats.receive_errors += phy_tmp;
2175 spin_unlock_irqrestore(&adapter->stats_lock, flags);
2179 * e1000_irq_disable - Mask off interrupt generation on the NIC
2180 * @adapter: board private structure
2184 e1000_irq_disable(struct e1000_adapter *adapter)
2186 atomic_inc(&adapter->irq_sem);
2187 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
2188 E1000_WRITE_FLUSH(&adapter->hw);
2189 synchronize_irq(adapter->pdev->irq);
2193 * e1000_irq_enable - Enable default interrupt generation settings
2194 * @adapter: board private structure
2198 e1000_irq_enable(struct e1000_adapter *adapter)
2200 if(likely(atomic_dec_and_test(&adapter->irq_sem))) {
2201 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
2202 E1000_WRITE_FLUSH(&adapter->hw);
2207 * e1000_intr - Interrupt Handler
2208 * @irq: interrupt number
2209 * @data: pointer to a network interface device structure
2210 * @pt_regs: CPU registers structure
2214 e1000_intr(int irq, void *data, struct pt_regs *regs)
2216 struct net_device *netdev = data;
2217 struct e1000_adapter *adapter = netdev->priv;
2218 struct e1000_hw *hw = &adapter->hw;
2219 uint32_t icr = E1000_READ_REG(hw, ICR);
2220 #ifndef CONFIG_E1000_NAPI
2225 return IRQ_NONE; /* Not our interrupt */
2227 if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
2228 hw->get_link_status = 1;
2229 mod_timer(&adapter->watchdog_timer, jiffies);
2232 #ifdef CONFIG_E1000_NAPI
2233 if(likely(netif_rx_schedule_prep(netdev))) {
2235 /* Disable interrupts and register for poll. The flush
2236 of the posted write is intentionally left out.
2239 atomic_inc(&adapter->irq_sem);
2240 E1000_WRITE_REG(hw, IMC, ~0);
2241 __netif_rx_schedule(netdev);
2244 for(i = 0; i < E1000_MAX_INTR; i++)
2245 if(unlikely(!e1000_clean_rx_irq(adapter) &
2246 !e1000_clean_tx_irq(adapter)))
2253 #ifdef CONFIG_E1000_NAPI
2255 * e1000_clean - NAPI Rx polling callback
2256 * @adapter: board private structure
2260 e1000_clean(struct net_device *netdev, int *budget)
2262 struct e1000_adapter *adapter = netdev->priv;
2263 int work_to_do = min(*budget, netdev->quota);
2267 tx_cleaned = e1000_clean_tx_irq(adapter);
2268 e1000_clean_rx_irq(adapter, &work_done, work_to_do);
2270 *budget -= work_done;
2271 netdev->quota -= work_done;
2273 /* if no Rx and Tx cleanup work was done, exit the polling mode */
2274 if(!tx_cleaned || (work_done < work_to_do) ||
2275 !netif_running(netdev)) {
2276 netif_rx_complete(netdev);
2277 e1000_irq_enable(adapter);
2281 return (work_done >= work_to_do);
2286 * e1000_clean_tx_irq - Reclaim resources after transmit completes
2287 * @adapter: board private structure
2291 e1000_clean_tx_irq(struct e1000_adapter *adapter)
2293 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
2294 struct net_device *netdev = adapter->netdev;
2295 struct e1000_tx_desc *tx_desc, *eop_desc;
2296 struct e1000_buffer *buffer_info;
2297 unsigned int i, eop;
2298 boolean_t cleaned = FALSE;
2300 i = tx_ring->next_to_clean;
2301 eop = tx_ring->buffer_info[i].next_to_watch;
2302 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2304 while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
2305 /* pre-mature writeback of Tx descriptors */
2306 /* clear (free buffers and unmap pci_mapping) */
2307 /* previous_buffer_info */
2308 if (likely(adapter->previous_buffer_info.skb != NULL)) {
2309 e1000_unmap_and_free_tx_resource(adapter,
2310 &adapter->previous_buffer_info);
2313 for(cleaned = FALSE; !cleaned; ) {
2314 tx_desc = E1000_TX_DESC(*tx_ring, i);
2315 buffer_info = &tx_ring->buffer_info[i];
2317 cleaned = (i == eop);
2319 /* pre-mature writeback of Tx descriptors */
2320 /* save the cleaning of the this for the */
2321 /* next iteration */
2323 memcpy(&adapter->previous_buffer_info,
2325 sizeof(struct e1000_buffer));
2328 sizeof(struct e1000_buffer));
2330 e1000_unmap_and_free_tx_resource(adapter,
2333 tx_desc->buffer_addr = 0;
2334 tx_desc->lower.data = 0;
2335 tx_desc->upper.data = 0;
2337 cleaned = (i == eop);
2338 if(unlikely(++i == tx_ring->count)) i = 0;
2341 eop = tx_ring->buffer_info[i].next_to_watch;
2342 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2345 tx_ring->next_to_clean = i;
2347 spin_lock(&adapter->tx_lock);
2349 if(unlikely(cleaned && netif_queue_stopped(netdev) &&
2350 netif_carrier_ok(netdev)))
2351 netif_wake_queue(netdev);
2353 spin_unlock(&adapter->tx_lock);
2359 * e1000_clean_rx_irq - Send received data up the network stack
2360 * @adapter: board private structure
2364 #ifdef CONFIG_E1000_NAPI
2365 e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done,
2368 e1000_clean_rx_irq(struct e1000_adapter *adapter)
2371 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2372 struct net_device *netdev = adapter->netdev;
2373 struct pci_dev *pdev = adapter->pdev;
2374 struct e1000_rx_desc *rx_desc;
2375 struct e1000_buffer *buffer_info;
2376 struct sk_buff *skb;
2377 unsigned long flags;
2381 boolean_t cleaned = FALSE;
2383 i = rx_ring->next_to_clean;
2384 rx_desc = E1000_RX_DESC(*rx_ring, i);
2386 while(rx_desc->status & E1000_RXD_STAT_DD) {
2387 buffer_info = &rx_ring->buffer_info[i];
2388 #ifdef CONFIG_E1000_NAPI
2389 if(*work_done >= work_to_do)
2395 pci_unmap_single(pdev,
2397 buffer_info->length,
2398 PCI_DMA_FROMDEVICE);
2400 skb = buffer_info->skb;
2401 length = le16_to_cpu(rx_desc->length);
2403 if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) {
2404 /* All receives must fit into a single buffer */
2405 E1000_DBG("%s: Receive packet consumed multiple"
2406 " buffers\n", netdev->name);
2407 dev_kfree_skb_irq(skb);
2411 if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
2412 last_byte = *(skb->data + length - 1);
2413 if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
2414 rx_desc->errors, length, last_byte)) {
2415 spin_lock_irqsave(&adapter->stats_lock, flags);
2416 e1000_tbi_adjust_stats(&adapter->hw,
2419 spin_unlock_irqrestore(&adapter->stats_lock,
2423 dev_kfree_skb_irq(skb);
2429 skb_put(skb, length - ETHERNET_FCS_SIZE);
2431 /* Receive Checksum Offload */
2432 e1000_rx_checksum(adapter, rx_desc, skb);
2434 skb->protocol = eth_type_trans(skb, netdev);
2435 #ifdef CONFIG_E1000_NAPI
2436 if(unlikely(adapter->vlgrp &&
2437 (rx_desc->status & E1000_RXD_STAT_VP))) {
2438 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
2439 le16_to_cpu(rx_desc->special) &
2440 E1000_RXD_SPC_VLAN_MASK);
2442 netif_receive_skb(skb);
2444 #else /* CONFIG_E1000_NAPI */
2445 if(unlikely(adapter->vlgrp &&
2446 (rx_desc->status & E1000_RXD_STAT_VP))) {
2447 vlan_hwaccel_rx(skb, adapter->vlgrp,
2448 le16_to_cpu(rx_desc->special) &
2449 E1000_RXD_SPC_VLAN_MASK);
2453 #endif /* CONFIG_E1000_NAPI */
2454 netdev->last_rx = jiffies;
2457 rx_desc->status = 0;
2458 buffer_info->skb = NULL;
2459 if(unlikely(++i == rx_ring->count)) i = 0;
2461 rx_desc = E1000_RX_DESC(*rx_ring, i);
2464 rx_ring->next_to_clean = i;
2466 e1000_alloc_rx_buffers(adapter);
2472 * e1000_alloc_rx_buffers - Replace used receive buffers
2473 * @adapter: address of board private structure
2477 e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
2479 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2480 struct net_device *netdev = adapter->netdev;
2481 struct pci_dev *pdev = adapter->pdev;
2482 struct e1000_rx_desc *rx_desc;
2483 struct e1000_buffer *buffer_info;
2484 struct sk_buff *skb;
2485 unsigned int i, bufsz;
2487 i = rx_ring->next_to_use;
2488 buffer_info = &rx_ring->buffer_info[i];
2490 while(!buffer_info->skb) {
2491 bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
2493 skb = dev_alloc_skb(bufsz);
2494 if(unlikely(!skb)) {
2495 /* Better luck next round */
2499 /* fix for errata 23, cant cross 64kB boundary */
2500 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
2501 struct sk_buff *oldskb = skb;
2503 "skb align check failed: %u bytes at %p\n",
2505 /* try again, without freeing the previous */
2506 skb = dev_alloc_skb(bufsz);
2508 dev_kfree_skb(oldskb);
2511 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
2514 dev_kfree_skb(oldskb);
2515 break; /* while !buffer_info->skb */
2517 /* move on with the new one */
2518 dev_kfree_skb(oldskb);
2522 /* Make buffer alignment 2 beyond a 16 byte boundary
2523 * this will result in a 16 byte aligned IP header after
2524 * the 14 byte MAC header is removed
2526 skb_reserve(skb, NET_IP_ALIGN);
2530 buffer_info->skb = skb;
2531 buffer_info->length = adapter->rx_buffer_len;
2532 buffer_info->dma = pci_map_single(pdev,
2534 adapter->rx_buffer_len,
2535 PCI_DMA_FROMDEVICE);
2537 /* fix for errata 23, cant cross 64kB boundary */
2538 if (!e1000_check_64k_bound(adapter, (void *)buffer_info->dma, adapter->rx_buffer_len)) {
2540 "dma align check failed: %u bytes at %ld\n",
2541 adapter->rx_buffer_len, buffer_info->dma);
2544 buffer_info->skb = NULL;
2546 pci_unmap_single(pdev,
2548 adapter->rx_buffer_len,
2549 PCI_DMA_FROMDEVICE);
2551 break; /* while !buffer_info->skb */
2554 rx_desc = E1000_RX_DESC(*rx_ring, i);
2555 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2557 if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) {
2558 /* Force memory writes to complete before letting h/w
2559 * know there are new descriptors to fetch. (Only
2560 * applicable for weak-ordered memory model archs,
2561 * such as IA-64). */
2564 E1000_WRITE_REG(&adapter->hw, RDT, i);
2567 if(unlikely(++i == rx_ring->count)) i = 0;
2568 buffer_info = &rx_ring->buffer_info[i];
2571 rx_ring->next_to_use = i;
2575 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
2580 e1000_smartspeed(struct e1000_adapter *adapter)
2582 uint16_t phy_status;
2585 if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
2586 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
2589 if(adapter->smartspeed == 0) {
2590 /* If Master/Slave config fault is asserted twice,
2591 * we assume back-to-back */
2592 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2593 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2594 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2595 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2596 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2597 if(phy_ctrl & CR_1000T_MS_ENABLE) {
2598 phy_ctrl &= ~CR_1000T_MS_ENABLE;
2599 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
2601 adapter->smartspeed++;
2602 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2603 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
2605 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2606 MII_CR_RESTART_AUTO_NEG);
2607 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
2612 } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
2613 /* If still no link, perhaps using 2/3 pair cable */
2614 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2615 phy_ctrl |= CR_1000T_MS_ENABLE;
2616 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
2617 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2618 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
2619 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2620 MII_CR_RESTART_AUTO_NEG);
2621 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
2624 /* Restart process after E1000_SMARTSPEED_MAX iterations */
2625 if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
2626 adapter->smartspeed = 0;
2637 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2643 return e1000_mii_ioctl(netdev, ifr, cmd);
2657 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2659 struct e1000_adapter *adapter = netdev->priv;
2660 struct mii_ioctl_data *data = if_mii(ifr);
2665 if(adapter->hw.media_type != e1000_media_type_copper)
2670 data->phy_id = adapter->hw.phy_addr;
2673 if (!capable(CAP_NET_ADMIN))
2675 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
2680 if (!capable(CAP_NET_ADMIN))
2682 if (data->reg_num & ~(0x1F))
2684 mii_reg = data->val_in;
2685 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
2688 if (adapter->hw.phy_type == e1000_phy_m88) {
2689 switch (data->reg_num) {
2691 if(mii_reg & MII_CR_POWER_DOWN)
2693 if(mii_reg & MII_CR_AUTO_NEG_EN) {
2694 adapter->hw.autoneg = 1;
2695 adapter->hw.autoneg_advertised = 0x2F;
2698 spddplx = SPEED_1000;
2699 else if (mii_reg & 0x2000)
2700 spddplx = SPEED_100;
2703 spddplx += (mii_reg & 0x100)
2706 retval = e1000_set_spd_dplx(adapter,
2711 if(netif_running(adapter->netdev)) {
2712 e1000_down(adapter);
2715 e1000_reset(adapter);
2717 case M88E1000_PHY_SPEC_CTRL:
2718 case M88E1000_EXT_PHY_SPEC_CTRL:
2719 if (e1000_phy_reset(&adapter->hw))
2724 switch (data->reg_num) {
2726 if(mii_reg & MII_CR_POWER_DOWN)
2728 if(netif_running(adapter->netdev)) {
2729 e1000_down(adapter);
2732 e1000_reset(adapter);
2740 return E1000_SUCCESS;
2744 * e1000_rx_checksum - Receive Checksum Offload for 82543
2745 * @adapter: board private structure
2746 * @rx_desc: receive descriptor
2747 * @sk_buff: socket buffer with received data
2751 e1000_rx_checksum(struct e1000_adapter *adapter,
2752 struct e1000_rx_desc *rx_desc,
2753 struct sk_buff *skb)
2755 /* 82543 or newer only */
2756 if(unlikely((adapter->hw.mac_type < e1000_82543) ||
2757 /* Ignore Checksum bit is set */
2758 (rx_desc->status & E1000_RXD_STAT_IXSM) ||
2759 /* TCP Checksum has not been calculated */
2760 (!(rx_desc->status & E1000_RXD_STAT_TCPCS)))) {
2761 skb->ip_summed = CHECKSUM_NONE;
2765 /* At this point we know the hardware did the TCP checksum */
2766 /* now look at the TCP checksum error bit */
2767 if(rx_desc->errors & E1000_RXD_ERR_TCPE) {
2768 /* let the stack verify checksum errors */
2769 skb->ip_summed = CHECKSUM_NONE;
2770 adapter->hw_csum_err++;
2772 /* TCP checksum is good */
2773 skb->ip_summed = CHECKSUM_UNNECESSARY;
2774 adapter->hw_csum_good++;
2779 e1000_pci_set_mwi(struct e1000_hw *hw)
2781 struct e1000_adapter *adapter = hw->back;
2784 ret = pci_set_mwi(adapter->pdev);
2788 e1000_pci_clear_mwi(struct e1000_hw *hw)
2790 struct e1000_adapter *adapter = hw->back;
2792 pci_clear_mwi(adapter->pdev);
2796 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2798 struct e1000_adapter *adapter = hw->back;
2800 pci_read_config_word(adapter->pdev, reg, value);
2804 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2806 struct e1000_adapter *adapter = hw->back;
2808 pci_write_config_word(adapter->pdev, reg, *value);
2812 e1000_io_read(struct e1000_hw *hw, unsigned long port)
2818 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
2824 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2826 struct e1000_adapter *adapter = netdev->priv;
2827 uint32_t ctrl, rctl;
2829 e1000_irq_disable(adapter);
2830 adapter->vlgrp = grp;
2833 /* enable VLAN tag insert/strip */
2834 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2835 ctrl |= E1000_CTRL_VME;
2836 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2838 /* enable VLAN receive filtering */
2839 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2840 rctl |= E1000_RCTL_VFE;
2841 rctl &= ~E1000_RCTL_CFIEN;
2842 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2844 /* disable VLAN tag insert/strip */
2845 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2846 ctrl &= ~E1000_CTRL_VME;
2847 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2849 /* disable VLAN filtering */
2850 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2851 rctl &= ~E1000_RCTL_VFE;
2852 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2855 e1000_irq_enable(adapter);
2859 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
2861 struct e1000_adapter *adapter = netdev->priv;
2862 uint32_t vfta, index;
2864 /* add VID to filter table */
2865 index = (vid >> 5) & 0x7F;
2866 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2867 vfta |= (1 << (vid & 0x1F));
2868 e1000_write_vfta(&adapter->hw, index, vfta);
2872 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
2874 struct e1000_adapter *adapter = netdev->priv;
2875 uint32_t vfta, index;
2877 e1000_irq_disable(adapter);
2880 adapter->vlgrp->vlan_devices[vid] = NULL;
2882 e1000_irq_enable(adapter);
2884 /* remove VID from filter table */
2885 index = (vid >> 5) & 0x7F;
2886 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2887 vfta &= ~(1 << (vid & 0x1F));
2888 e1000_write_vfta(&adapter->hw, index, vfta);
2892 e1000_restore_vlan(struct e1000_adapter *adapter)
2894 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2896 if(adapter->vlgrp) {
2898 for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2899 if(!adapter->vlgrp->vlan_devices[vid])
2901 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2907 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
2909 adapter->hw.autoneg = 0;
2912 case SPEED_10 + DUPLEX_HALF:
2913 adapter->hw.forced_speed_duplex = e1000_10_half;
2915 case SPEED_10 + DUPLEX_FULL:
2916 adapter->hw.forced_speed_duplex = e1000_10_full;
2918 case SPEED_100 + DUPLEX_HALF:
2919 adapter->hw.forced_speed_duplex = e1000_100_half;
2921 case SPEED_100 + DUPLEX_FULL:
2922 adapter->hw.forced_speed_duplex = e1000_100_full;
2924 case SPEED_1000 + DUPLEX_FULL:
2925 adapter->hw.autoneg = 1;
2926 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
2928 case SPEED_1000 + DUPLEX_HALF: /* not supported */
2931 "Unsupported Speed/Duplexity configuration\n");
2938 e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
2940 struct pci_dev *pdev = NULL;
2946 while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
2947 if(pci_dev_driver(pdev) == &e1000_driver)
2948 e1000_suspend(pdev, 3);
2955 e1000_suspend(struct pci_dev *pdev, uint32_t state)
2957 struct net_device *netdev = pci_get_drvdata(pdev);
2958 struct e1000_adapter *adapter = netdev->priv;
2959 uint32_t ctrl, ctrl_ext, rctl, manc, status;
2960 uint32_t wufc = adapter->wol;
2962 netif_device_detach(netdev);
2964 if(netif_running(netdev))
2965 e1000_down(adapter);
2967 status = E1000_READ_REG(&adapter->hw, STATUS);
2968 if(status & E1000_STATUS_LU)
2969 wufc &= ~E1000_WUFC_LNKC;
2972 e1000_setup_rctl(adapter);
2973 e1000_set_multi(netdev);
2975 /* turn on all-multi mode if wake on multicast is enabled */
2976 if(adapter->wol & E1000_WUFC_MC) {
2977 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2978 rctl |= E1000_RCTL_MPE;
2979 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2982 if(adapter->hw.mac_type >= e1000_82540) {
2983 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2984 /* advertise wake from D3Cold */
2985 #define E1000_CTRL_ADVD3WUC 0x00100000
2986 /* phy power management enable */
2987 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
2988 ctrl |= E1000_CTRL_ADVD3WUC |
2989 E1000_CTRL_EN_PHY_PWR_MGMT;
2990 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2993 if(adapter->hw.media_type == e1000_media_type_fiber ||
2994 adapter->hw.media_type == e1000_media_type_internal_serdes) {
2995 /* keep the laser running in D3 */
2996 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
2997 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
2998 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
3001 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
3002 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
3003 pci_enable_wake(pdev, 3, 1);
3004 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
3006 E1000_WRITE_REG(&adapter->hw, WUC, 0);
3007 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
3008 pci_enable_wake(pdev, 3, 0);
3009 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
3012 pci_save_state(pdev);
3014 if(adapter->hw.mac_type >= e1000_82540 &&
3015 adapter->hw.media_type == e1000_media_type_copper) {
3016 manc = E1000_READ_REG(&adapter->hw, MANC);
3017 if(manc & E1000_MANC_SMBUS_EN) {
3018 manc |= E1000_MANC_ARP_EN;
3019 E1000_WRITE_REG(&adapter->hw, MANC, manc);
3020 pci_enable_wake(pdev, 3, 1);
3021 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
3025 pci_disable_device(pdev);
3027 state = (state > 0) ? 3 : 0;
3028 pci_set_power_state(pdev, state);
3035 e1000_resume(struct pci_dev *pdev)
3037 struct net_device *netdev = pci_get_drvdata(pdev);
3038 struct e1000_adapter *adapter = netdev->priv;
3041 pci_set_power_state(pdev, 0);
3042 pci_restore_state(pdev);
3043 ret = pci_enable_device(pdev);
3044 if (pdev->is_busmaster)
3045 pci_set_master(pdev);
3047 pci_enable_wake(pdev, 3, 0);
3048 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
3050 e1000_reset(adapter);
3051 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
3053 if(netif_running(netdev))
3056 netif_device_attach(netdev);
3058 if(adapter->hw.mac_type >= e1000_82540 &&
3059 adapter->hw.media_type == e1000_media_type_copper) {
3060 manc = E1000_READ_REG(&adapter->hw, MANC);
3061 manc &= ~(E1000_MANC_ARP_EN);
3062 E1000_WRITE_REG(&adapter->hw, MANC, manc);
3069 #ifdef CONFIG_NET_POLL_CONTROLLER
3071 * Polling 'interrupt' - used by things like netconsole to send skbs
3072 * without having to re-enable interrupts. It's not called while
3073 * the interrupt routine is executing.
3076 e1000_netpoll (struct net_device *netdev)
3078 struct e1000_adapter *adapter = netdev->priv;
3079 disable_irq(adapter->pdev->irq);
3080 e1000_intr(adapter->pdev->irq, netdev, NULL);
3081 enable_irq(adapter->pdev->irq);