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 *******************************************************************************/
30 #include <linux/rtnetlink.h>
35 * o set default configuration to 'NAPI disabled'. NAPI enabled driver
36 * causes kernel panic when the interface is shutdown while data is being
39 * o fixed ethtool -t implementation
41 * o fixed ethtool -e implementation
42 * o Support for ethtool ops [Stephen Hemminger (shemminger@osdl.org)]
44 * o Added support for the DPRINTK macro for enhanced error logging. Some
45 * parts of the patch were supplied by Jon Mason.
46 * o Move the register_netdevice() donw in the probe routine due to a
47 * loading/unloading test issue.
48 * o Added a long RX byte count the the extra ethtool data members for BER
53 char e1000_driver_name[] = "e1000";
54 char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
55 char e1000_driver_version[] = "5.2.52-k4";
56 char e1000_copyright[] = "Copyright (c) 1999-2004 Intel Corporation.";
58 /* e1000_pci_tbl - PCI Device ID Table
60 * Wildcard entries (PCI_ANY_ID) should come last
61 * Last entry must be all 0s
63 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
64 * Class, Class Mask, private data (not used) }
66 static struct pci_device_id e1000_pci_tbl[] = {
67 {0x8086, 0x1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
68 {0x8086, 0x1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
69 {0x8086, 0x1004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
70 {0x8086, 0x1008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
71 {0x8086, 0x1009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
72 {0x8086, 0x100C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
73 {0x8086, 0x100D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
74 {0x8086, 0x100E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
75 {0x8086, 0x100F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
76 {0x8086, 0x1010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
77 {0x8086, 0x1011, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
78 {0x8086, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
79 {0x8086, 0x1013, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
80 {0x8086, 0x1015, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
81 {0x8086, 0x1016, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
82 {0x8086, 0x1017, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
83 {0x8086, 0x1018, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
84 {0x8086, 0x1019, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
85 {0x8086, 0x101D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
86 {0x8086, 0x101E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
87 {0x8086, 0x1026, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
88 {0x8086, 0x1027, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
89 {0x8086, 0x1028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
90 {0x8086, 0x1075, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
91 {0x8086, 0x1076, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
92 {0x8086, 0x1077, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
93 {0x8086, 0x1078, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
94 {0x8086, 0x1079, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
95 {0x8086, 0x107A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
96 {0x8086, 0x107B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
97 /* required last entry */
101 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
103 int e1000_up(struct e1000_adapter *adapter);
104 void e1000_down(struct e1000_adapter *adapter);
105 void e1000_reset(struct e1000_adapter *adapter);
106 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
107 int e1000_setup_tx_resources(struct e1000_adapter *adapter);
108 int e1000_setup_rx_resources(struct e1000_adapter *adapter);
109 void e1000_free_tx_resources(struct e1000_adapter *adapter);
110 void e1000_free_rx_resources(struct e1000_adapter *adapter);
111 void e1000_update_stats(struct e1000_adapter *adapter);
113 /* Local Function Prototypes */
115 static int e1000_init_module(void);
116 static void e1000_exit_module(void);
117 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
118 static void __devexit e1000_remove(struct pci_dev *pdev);
119 static int e1000_sw_init(struct e1000_adapter *adapter);
120 static int e1000_open(struct net_device *netdev);
121 static int e1000_close(struct net_device *netdev);
122 static void e1000_configure_tx(struct e1000_adapter *adapter);
123 static void e1000_configure_rx(struct e1000_adapter *adapter);
124 static void e1000_setup_rctl(struct e1000_adapter *adapter);
125 static void e1000_clean_tx_ring(struct e1000_adapter *adapter);
126 static void e1000_clean_rx_ring(struct e1000_adapter *adapter);
127 static void e1000_set_multi(struct net_device *netdev);
128 static void e1000_update_phy_info(unsigned long data);
129 static void e1000_watchdog(unsigned long data);
130 static void e1000_82547_tx_fifo_stall(unsigned long data);
131 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
132 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
133 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
134 static int e1000_set_mac(struct net_device *netdev, void *p);
135 static inline void e1000_irq_disable(struct e1000_adapter *adapter);
136 static inline void e1000_irq_enable(struct e1000_adapter *adapter);
137 static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs);
138 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter);
139 #ifdef CONFIG_E1000_NAPI
140 static int e1000_clean(struct net_device *netdev, int *budget);
141 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
142 int *work_done, int work_to_do);
144 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter);
146 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter);
147 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
148 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
150 void set_ethtool_ops(struct net_device *netdev);
151 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
152 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
153 static inline void e1000_rx_checksum(struct e1000_adapter *adapter,
154 struct e1000_rx_desc *rx_desc,
155 struct sk_buff *skb);
156 static void e1000_tx_timeout(struct net_device *dev);
157 static void e1000_tx_timeout_task(struct net_device *dev);
158 static void e1000_smartspeed(struct e1000_adapter *adapter);
159 static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
160 struct sk_buff *skb);
162 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
163 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
164 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
165 static void e1000_restore_vlan(struct e1000_adapter *adapter);
167 static int e1000_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
168 static int e1000_suspend(struct pci_dev *pdev, uint32_t state);
170 static int e1000_resume(struct pci_dev *pdev);
173 #ifdef CONFIG_NET_POLL_CONTROLLER
174 /* for netdump / net console */
175 static void e1000_netpoll (struct net_device *dev);
178 struct notifier_block e1000_notifier_reboot = {
179 .notifier_call = e1000_notify_reboot,
184 /* Exported from other modules */
186 extern void e1000_check_options(struct e1000_adapter *adapter);
189 static struct pci_driver e1000_driver = {
190 .name = e1000_driver_name,
191 .id_table = e1000_pci_tbl,
192 .probe = e1000_probe,
193 .remove = __devexit_p(e1000_remove),
194 /* Power Managment Hooks */
196 .suspend = e1000_suspend,
197 .resume = e1000_resume
201 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
202 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
203 MODULE_LICENSE("GPL");
205 static int debug = 3;
206 module_param(debug, int, 0);
207 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
210 * e1000_init_module - Driver Registration Routine
212 * e1000_init_module is the first routine called when the driver is
213 * loaded. All it does is register with the PCI subsystem.
217 e1000_init_module(void)
220 printk(KERN_INFO "%s - version %s\n",
221 e1000_driver_string, e1000_driver_version);
223 printk(KERN_INFO "%s\n", e1000_copyright);
225 ret = pci_module_init(&e1000_driver);
227 register_reboot_notifier(&e1000_notifier_reboot);
232 module_init(e1000_init_module);
235 * e1000_exit_module - Driver Exit Cleanup Routine
237 * e1000_exit_module is called just before the driver is removed
242 e1000_exit_module(void)
244 unregister_reboot_notifier(&e1000_notifier_reboot);
245 pci_unregister_driver(&e1000_driver);
248 module_exit(e1000_exit_module);
252 e1000_up(struct e1000_adapter *adapter)
254 struct net_device *netdev = adapter->netdev;
257 /* hardware has been reset, we need to reload some things */
259 e1000_set_multi(netdev);
261 e1000_restore_vlan(adapter);
263 e1000_configure_tx(adapter);
264 e1000_setup_rctl(adapter);
265 e1000_configure_rx(adapter);
266 e1000_alloc_rx_buffers(adapter);
268 if((err = request_irq(adapter->pdev->irq, &e1000_intr,
269 SA_SHIRQ | SA_SAMPLE_RANDOM,
270 netdev->name, netdev)))
273 mod_timer(&adapter->watchdog_timer, jiffies);
274 e1000_irq_enable(adapter);
280 e1000_down(struct e1000_adapter *adapter)
282 struct net_device *netdev = adapter->netdev;
284 e1000_irq_disable(adapter);
285 free_irq(adapter->pdev->irq, netdev);
286 del_timer_sync(&adapter->tx_fifo_stall_timer);
287 del_timer_sync(&adapter->watchdog_timer);
288 del_timer_sync(&adapter->phy_info_timer);
289 adapter->link_speed = 0;
290 adapter->link_duplex = 0;
291 netif_carrier_off(netdev);
292 netif_stop_queue(netdev);
294 e1000_reset(adapter);
295 e1000_clean_tx_ring(adapter);
296 e1000_clean_rx_ring(adapter);
300 e1000_reset(struct e1000_adapter *adapter)
303 /* Repartition Pba for greater than 9k mtu
304 * To take effect CTRL.RST is required.
307 if(adapter->hw.mac_type < e1000_82547) {
308 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
313 if(adapter->rx_buffer_len > E1000_RXBUFFER_8192)
317 adapter->tx_fifo_head = 0;
318 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
319 adapter->tx_fifo_size =
320 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
321 atomic_set(&adapter->tx_fifo_stall, 0);
323 E1000_WRITE_REG(&adapter->hw, PBA, pba);
325 /* flow control settings */
326 adapter->hw.fc_high_water =
327 (pba << E1000_PBA_BYTES_SHIFT) - E1000_FC_HIGH_DIFF;
328 adapter->hw.fc_low_water =
329 (pba << E1000_PBA_BYTES_SHIFT) - E1000_FC_LOW_DIFF;
330 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
331 adapter->hw.fc_send_xon = 1;
332 adapter->hw.fc = adapter->hw.original_fc;
334 e1000_reset_hw(&adapter->hw);
335 if(adapter->hw.mac_type >= e1000_82544)
336 E1000_WRITE_REG(&adapter->hw, WUC, 0);
337 e1000_init_hw(&adapter->hw);
339 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
340 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
342 e1000_reset_adaptive(&adapter->hw);
343 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
345 if(adapter->en_mng_pt) {
346 manc = E1000_READ_REG(&adapter->hw, MANC);
347 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
348 E1000_WRITE_REG(&adapter->hw, MANC, manc);
353 * e1000_probe - Device Initialization Routine
354 * @pdev: PCI device information struct
355 * @ent: entry in e1000_pci_tbl
357 * Returns 0 on success, negative on failure
359 * e1000_probe initializes an adapter identified by a pci_dev structure.
360 * The OS initialization, configuring of the adapter private structure,
361 * and a hardware reset occur.
365 e1000_probe(struct pci_dev *pdev,
366 const struct pci_device_id *ent)
368 struct net_device *netdev;
369 struct e1000_adapter *adapter;
370 static int cards_found = 0;
371 unsigned long mmio_start;
376 uint16_t eeprom_data;
378 if((err = pci_enable_device(pdev)))
381 if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
384 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
385 E1000_ERR("No usable DMA configuration, aborting\n");
391 if((err = pci_request_regions(pdev, e1000_driver_name)))
394 pci_set_master(pdev);
396 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
399 goto err_alloc_etherdev;
402 SET_MODULE_OWNER(netdev);
403 SET_NETDEV_DEV(netdev, &pdev->dev);
405 pci_set_drvdata(pdev, netdev);
406 adapter = netdev->priv;
407 adapter->netdev = netdev;
408 adapter->pdev = pdev;
409 adapter->hw.back = adapter;
410 adapter->msg_enable = (1 << debug) - 1;
413 /* we need to set the name early since the DPRINTK macro needs it set */
414 if (dev_alloc_name(netdev, netdev->name) < 0)
415 goto err_free_unlock;
417 mmio_start = pci_resource_start(pdev, BAR_0);
418 mmio_len = pci_resource_len(pdev, BAR_0);
420 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
421 if(!adapter->hw.hw_addr) {
426 for(i = BAR_1; i <= BAR_5; i++) {
427 if(pci_resource_len(pdev, i) == 0)
429 if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
430 adapter->hw.io_base = pci_resource_start(pdev, i);
435 netdev->open = &e1000_open;
436 netdev->stop = &e1000_close;
437 netdev->hard_start_xmit = &e1000_xmit_frame;
438 netdev->get_stats = &e1000_get_stats;
439 netdev->set_multicast_list = &e1000_set_multi;
440 netdev->set_mac_address = &e1000_set_mac;
441 netdev->change_mtu = &e1000_change_mtu;
442 netdev->do_ioctl = &e1000_ioctl;
443 set_ethtool_ops(netdev);
444 netdev->tx_timeout = &e1000_tx_timeout;
445 netdev->watchdog_timeo = 5 * HZ;
446 #ifdef CONFIG_E1000_NAPI
447 netdev->poll = &e1000_clean;
450 netdev->vlan_rx_register = e1000_vlan_rx_register;
451 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
452 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
453 #ifdef CONFIG_NET_POLL_CONTROLLER
454 netdev->poll_controller = e1000_netpoll;
457 netdev->mem_start = mmio_start;
458 netdev->mem_end = mmio_start + mmio_len;
459 netdev->base_addr = adapter->hw.io_base;
461 adapter->bd_number = cards_found;
463 /* setup the private structure */
465 if((err = e1000_sw_init(adapter)))
468 if(adapter->hw.mac_type >= e1000_82543) {
469 netdev->features = NETIF_F_SG |
473 NETIF_F_HW_VLAN_FILTER;
475 netdev->features = NETIF_F_SG;
479 #ifdef BROKEN_ON_NON_IA_ARCHS
480 /* Disbaled for now until root-cause is found for
481 * hangs reported against non-IA archs. TSO can be
482 * enabled using ethtool -K eth<x> tso on */
483 if((adapter->hw.mac_type >= e1000_82544) &&
484 (adapter->hw.mac_type != e1000_82547))
485 netdev->features |= NETIF_F_TSO;
490 netdev->features |= NETIF_F_HIGHDMA;
492 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
494 /* before reading the EEPROM, reset the controller to
495 * put the device in a known good starting state */
497 e1000_reset_hw(&adapter->hw);
499 /* make sure the EEPROM is good */
501 if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
502 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
507 /* copy the MAC address out of the EEPROM */
509 e1000_read_mac_addr(&adapter->hw);
510 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
512 if(!is_valid_ether_addr(netdev->dev_addr)) {
517 e1000_read_part_num(&adapter->hw, &(adapter->part_num));
519 e1000_get_bus_info(&adapter->hw);
521 init_timer(&adapter->tx_fifo_stall_timer);
522 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
523 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
525 init_timer(&adapter->watchdog_timer);
526 adapter->watchdog_timer.function = &e1000_watchdog;
527 adapter->watchdog_timer.data = (unsigned long) adapter;
529 init_timer(&adapter->phy_info_timer);
530 adapter->phy_info_timer.function = &e1000_update_phy_info;
531 adapter->phy_info_timer.data = (unsigned long) adapter;
533 INIT_WORK(&adapter->tx_timeout_task,
534 (void (*)(void *))e1000_tx_timeout_task, netdev);
536 /* we're going to reset, so assume we have no link for now */
538 netif_carrier_off(netdev);
539 netif_stop_queue(netdev);
541 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
542 e1000_check_options(adapter);
544 /* Initial Wake on LAN setting
545 * If APM wake is enabled in the EEPROM,
546 * enable the ACPI Magic Packet filter
549 switch(adapter->hw.mac_type) {
550 case e1000_82542_rev2_0:
551 case e1000_82542_rev2_1:
555 case e1000_82546_rev_3:
556 if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
557 && (adapter->hw.media_type == e1000_media_type_copper)) {
558 e1000_read_eeprom(&adapter->hw,
559 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
564 e1000_read_eeprom(&adapter->hw,
565 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
568 if(eeprom_data & E1000_EEPROM_APME)
569 adapter->wol |= E1000_WUFC_MAG;
571 /* reset the hardware with the new settings */
573 e1000_reset(adapter);
575 /* since we are holding the rtnl lock already, call the no-lock version */
576 if((err = register_netdevice(netdev)))
586 iounmap(adapter->hw.hw_addr);
592 pci_release_regions(pdev);
597 * e1000_remove - Device Removal Routine
598 * @pdev: PCI device information struct
600 * e1000_remove is called by the PCI subsystem to alert the driver
601 * that it should release a PCI device. The could be caused by a
602 * Hot-Plug event, or because the driver is going to be removed from
606 static void __devexit
607 e1000_remove(struct pci_dev *pdev)
609 struct net_device *netdev = pci_get_drvdata(pdev);
610 struct e1000_adapter *adapter = netdev->priv;
613 if(adapter->hw.mac_type >= e1000_82540 &&
614 adapter->hw.media_type == e1000_media_type_copper) {
615 manc = E1000_READ_REG(&adapter->hw, MANC);
616 if(manc & E1000_MANC_SMBUS_EN) {
617 manc |= E1000_MANC_ARP_EN;
618 E1000_WRITE_REG(&adapter->hw, MANC, manc);
622 unregister_netdev(netdev);
624 e1000_phy_hw_reset(&adapter->hw);
626 iounmap(adapter->hw.hw_addr);
627 pci_release_regions(pdev);
633 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
634 * @adapter: board private structure to initialize
636 * e1000_sw_init initializes the Adapter private data structure.
637 * Fields are initialized based on PCI device information and
638 * OS network device settings (MTU size).
642 e1000_sw_init(struct e1000_adapter *adapter)
644 struct e1000_hw *hw = &adapter->hw;
645 struct net_device *netdev = adapter->netdev;
646 struct pci_dev *pdev = adapter->pdev;
648 /* PCI config space info */
650 hw->vendor_id = pdev->vendor;
651 hw->device_id = pdev->device;
652 hw->subsystem_vendor_id = pdev->subsystem_vendor;
653 hw->subsystem_id = pdev->subsystem_device;
655 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
657 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
659 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
660 hw->max_frame_size = netdev->mtu +
661 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
662 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
664 /* identify the MAC */
666 if (e1000_set_mac_type(hw)) {
667 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
671 /* initialize eeprom parameters */
673 e1000_init_eeprom_params(hw);
675 if((hw->mac_type == e1000_82541) ||
676 (hw->mac_type == e1000_82547) ||
677 (hw->mac_type == e1000_82541_rev_2) ||
678 (hw->mac_type == e1000_82547_rev_2))
679 hw->phy_init_script = 1;
681 e1000_set_media_type(hw);
683 if(hw->mac_type < e1000_82543)
684 hw->report_tx_early = 0;
686 hw->report_tx_early = 1;
688 hw->wait_autoneg_complete = FALSE;
689 hw->tbi_compatibility_en = TRUE;
690 hw->adaptive_ifs = TRUE;
694 if(hw->media_type == e1000_media_type_copper) {
695 hw->mdix = AUTO_ALL_MODES;
696 hw->disable_polarity_correction = FALSE;
697 hw->master_slave = E1000_MASTER_SLAVE;
700 atomic_set(&adapter->irq_sem, 1);
701 spin_lock_init(&adapter->stats_lock);
702 spin_lock_init(&adapter->tx_lock);
708 * e1000_open - Called when a network interface is made active
709 * @netdev: network interface device structure
711 * Returns 0 on success, negative value on failure
713 * The open entry point is called when a network interface is made
714 * active by the system (IFF_UP). At this point all resources needed
715 * for transmit and receive operations are allocated, the interrupt
716 * handler is registered with the OS, the watchdog timer is started,
717 * and the stack is notified that the interface is ready.
721 e1000_open(struct net_device *netdev)
723 struct e1000_adapter *adapter = netdev->priv;
726 /* allocate transmit descriptors */
728 if((err = e1000_setup_tx_resources(adapter)))
731 /* allocate receive descriptors */
733 if((err = e1000_setup_rx_resources(adapter)))
736 if((err = e1000_up(adapter)))
742 e1000_free_rx_resources(adapter);
744 e1000_free_tx_resources(adapter);
746 e1000_reset(adapter);
752 * e1000_close - Disables a network interface
753 * @netdev: network interface device structure
755 * Returns 0, this is not allowed to fail
757 * The close entry point is called when an interface is de-activated
758 * by the OS. The hardware is still under the drivers control, but
759 * needs to be disabled. A global MAC reset is issued to stop the
760 * hardware, and all transmit and receive resources are freed.
764 e1000_close(struct net_device *netdev)
766 struct e1000_adapter *adapter = netdev->priv;
770 e1000_free_tx_resources(adapter);
771 e1000_free_rx_resources(adapter);
777 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
778 * @adapter: board private structure
780 * Return 0 on success, negative on failure
784 e1000_setup_tx_resources(struct e1000_adapter *adapter)
786 struct e1000_desc_ring *txdr = &adapter->tx_ring;
787 struct pci_dev *pdev = adapter->pdev;
790 size = sizeof(struct e1000_buffer) * txdr->count;
791 txdr->buffer_info = kmalloc(size, GFP_KERNEL);
792 if(!txdr->buffer_info) {
795 memset(txdr->buffer_info, 0, size);
797 /* round up to nearest 4K */
799 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
800 E1000_ROUNDUP(txdr->size, 4096);
802 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
804 kfree(txdr->buffer_info);
807 memset(txdr->desc, 0, txdr->size);
809 txdr->next_to_use = 0;
810 txdr->next_to_clean = 0;
816 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
817 * @adapter: board private structure
819 * Configure the Tx unit of the MAC after a reset.
823 e1000_configure_tx(struct e1000_adapter *adapter)
825 uint64_t tdba = adapter->tx_ring.dma;
826 uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc);
829 E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL));
830 E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
832 E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen);
834 /* Setup the HW Tx Head and Tail descriptor pointers */
836 E1000_WRITE_REG(&adapter->hw, TDH, 0);
837 E1000_WRITE_REG(&adapter->hw, TDT, 0);
839 /* Set the default values for the Tx Inter Packet Gap timer */
841 switch (adapter->hw.mac_type) {
842 case e1000_82542_rev2_0:
843 case e1000_82542_rev2_1:
844 tipg = DEFAULT_82542_TIPG_IPGT;
845 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
846 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
849 if(adapter->hw.media_type == e1000_media_type_fiber ||
850 adapter->hw.media_type == e1000_media_type_internal_serdes)
851 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
853 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
854 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
855 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
857 E1000_WRITE_REG(&adapter->hw, TIPG, tipg);
859 /* Set the Tx Interrupt Delay register */
861 E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
862 if(adapter->hw.mac_type >= e1000_82540)
863 E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay);
865 /* Program the Transmit Control Register */
867 tctl = E1000_READ_REG(&adapter->hw, TCTL);
869 tctl &= ~E1000_TCTL_CT;
870 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
871 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
873 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
875 e1000_config_collision_dist(&adapter->hw);
877 /* Setup Transmit Descriptor Settings for eop descriptor */
878 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
881 if(adapter->hw.report_tx_early == 1)
882 adapter->txd_cmd |= E1000_TXD_CMD_RS;
884 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
886 /* Cache if we're 82544 running in PCI-X because we'll
887 * need this to apply a workaround later in the send path. */
888 if(adapter->hw.mac_type == e1000_82544 &&
889 adapter->hw.bus_type == e1000_bus_type_pcix)
890 adapter->pcix_82544 = 1;
894 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
895 * @adapter: board private structure
897 * Returns 0 on success, negative on failure
901 e1000_setup_rx_resources(struct e1000_adapter *adapter)
903 struct e1000_desc_ring *rxdr = &adapter->rx_ring;
904 struct pci_dev *pdev = adapter->pdev;
907 size = sizeof(struct e1000_buffer) * rxdr->count;
908 rxdr->buffer_info = kmalloc(size, GFP_KERNEL);
909 if(!rxdr->buffer_info) {
912 memset(rxdr->buffer_info, 0, size);
914 /* Round up to nearest 4K */
916 rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
917 E1000_ROUNDUP(rxdr->size, 4096);
919 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
922 kfree(rxdr->buffer_info);
925 memset(rxdr->desc, 0, rxdr->size);
927 rxdr->next_to_clean = 0;
928 rxdr->next_to_use = 0;
934 * e1000_setup_rctl - configure the receive control register
935 * @adapter: Board private structure
939 e1000_setup_rctl(struct e1000_adapter *adapter)
943 rctl = E1000_READ_REG(&adapter->hw, RCTL);
945 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
947 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
948 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
949 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
951 if(adapter->hw.tbi_compatibility_on == 1)
952 rctl |= E1000_RCTL_SBP;
954 rctl &= ~E1000_RCTL_SBP;
956 rctl &= ~(E1000_RCTL_SZ_4096);
957 switch (adapter->rx_buffer_len) {
958 case E1000_RXBUFFER_2048:
960 rctl |= E1000_RCTL_SZ_2048;
961 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
963 case E1000_RXBUFFER_4096:
964 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
966 case E1000_RXBUFFER_8192:
967 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
969 case E1000_RXBUFFER_16384:
970 rctl |= E1000_RCTL_SZ_16384 | E1000_RCTL_BSEX | E1000_RCTL_LPE;
974 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
978 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
979 * @adapter: board private structure
981 * Configure the Rx unit of the MAC after a reset.
985 e1000_configure_rx(struct e1000_adapter *adapter)
987 uint64_t rdba = adapter->rx_ring.dma;
988 uint32_t rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc);
992 /* make sure receives are disabled while setting up the descriptors */
994 rctl = E1000_READ_REG(&adapter->hw, RCTL);
995 E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN);
997 /* set the Receive Delay Timer Register */
999 E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay);
1001 if(adapter->hw.mac_type >= e1000_82540) {
1002 E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay);
1003 if(adapter->itr > 1)
1004 E1000_WRITE_REG(&adapter->hw, ITR,
1005 1000000000 / (adapter->itr * 256));
1008 /* Setup the Base and Length of the Rx Descriptor Ring */
1010 E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1011 E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
1013 E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen);
1015 /* Setup the HW Rx Head and Tail Descriptor Pointers */
1016 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1017 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1019 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1020 if((adapter->hw.mac_type >= e1000_82543) &&
1021 (adapter->rx_csum == TRUE)) {
1022 rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM);
1023 rxcsum |= E1000_RXCSUM_TUOFL;
1024 E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum);
1027 /* Enable Receives */
1029 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1033 * e1000_free_tx_resources - Free Tx Resources
1034 * @adapter: board private structure
1036 * Free all transmit software resources
1040 e1000_free_tx_resources(struct e1000_adapter *adapter)
1042 struct pci_dev *pdev = adapter->pdev;
1044 e1000_clean_tx_ring(adapter);
1046 kfree(adapter->tx_ring.buffer_info);
1047 adapter->tx_ring.buffer_info = NULL;
1049 pci_free_consistent(pdev, adapter->tx_ring.size,
1050 adapter->tx_ring.desc, adapter->tx_ring.dma);
1052 adapter->tx_ring.desc = NULL;
1056 * e1000_clean_tx_ring - Free Tx Buffers
1057 * @adapter: board private structure
1061 e1000_clean_tx_ring(struct e1000_adapter *adapter)
1063 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1064 struct e1000_buffer *buffer_info;
1065 struct pci_dev *pdev = adapter->pdev;
1069 /* Free all the Tx ring sk_buffs */
1071 for(i = 0; i < tx_ring->count; i++) {
1072 buffer_info = &tx_ring->buffer_info[i];
1073 if(buffer_info->skb) {
1075 pci_unmap_page(pdev,
1077 buffer_info->length,
1080 dev_kfree_skb(buffer_info->skb);
1082 buffer_info->skb = NULL;
1086 size = sizeof(struct e1000_buffer) * tx_ring->count;
1087 memset(tx_ring->buffer_info, 0, size);
1089 /* Zero out the descriptor ring */
1091 memset(tx_ring->desc, 0, tx_ring->size);
1093 tx_ring->next_to_use = 0;
1094 tx_ring->next_to_clean = 0;
1096 E1000_WRITE_REG(&adapter->hw, TDH, 0);
1097 E1000_WRITE_REG(&adapter->hw, TDT, 0);
1101 * e1000_free_rx_resources - Free Rx Resources
1102 * @adapter: board private structure
1104 * Free all receive software resources
1108 e1000_free_rx_resources(struct e1000_adapter *adapter)
1110 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1111 struct pci_dev *pdev = adapter->pdev;
1113 e1000_clean_rx_ring(adapter);
1115 kfree(rx_ring->buffer_info);
1116 rx_ring->buffer_info = NULL;
1118 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1120 rx_ring->desc = NULL;
1124 * e1000_clean_rx_ring - Free Rx Buffers
1125 * @adapter: board private structure
1129 e1000_clean_rx_ring(struct e1000_adapter *adapter)
1131 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
1132 struct e1000_buffer *buffer_info;
1133 struct pci_dev *pdev = adapter->pdev;
1137 /* Free all the Rx ring sk_buffs */
1139 for(i = 0; i < rx_ring->count; i++) {
1140 buffer_info = &rx_ring->buffer_info[i];
1141 if(buffer_info->skb) {
1143 pci_unmap_single(pdev,
1145 buffer_info->length,
1146 PCI_DMA_FROMDEVICE);
1148 dev_kfree_skb(buffer_info->skb);
1150 buffer_info->skb = NULL;
1154 size = sizeof(struct e1000_buffer) * rx_ring->count;
1155 memset(rx_ring->buffer_info, 0, size);
1157 /* Zero out the descriptor ring */
1159 memset(rx_ring->desc, 0, rx_ring->size);
1161 rx_ring->next_to_clean = 0;
1162 rx_ring->next_to_use = 0;
1164 E1000_WRITE_REG(&adapter->hw, RDH, 0);
1165 E1000_WRITE_REG(&adapter->hw, RDT, 0);
1168 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1169 * and memory write and invalidate disabled for certain operations
1172 e1000_enter_82542_rst(struct e1000_adapter *adapter)
1174 struct net_device *netdev = adapter->netdev;
1177 e1000_pci_clear_mwi(&adapter->hw);
1179 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1180 rctl |= E1000_RCTL_RST;
1181 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1182 E1000_WRITE_FLUSH(&adapter->hw);
1185 if(netif_running(netdev))
1186 e1000_clean_rx_ring(adapter);
1190 e1000_leave_82542_rst(struct e1000_adapter *adapter)
1192 struct net_device *netdev = adapter->netdev;
1195 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1196 rctl &= ~E1000_RCTL_RST;
1197 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1198 E1000_WRITE_FLUSH(&adapter->hw);
1201 if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
1202 e1000_pci_set_mwi(&adapter->hw);
1204 if(netif_running(netdev)) {
1205 e1000_configure_rx(adapter);
1206 e1000_alloc_rx_buffers(adapter);
1211 * e1000_set_mac - Change the Ethernet Address of the NIC
1212 * @netdev: network interface device structure
1213 * @p: pointer to an address structure
1215 * Returns 0 on success, negative on failure
1219 e1000_set_mac(struct net_device *netdev, void *p)
1221 struct e1000_adapter *adapter = netdev->priv;
1222 struct sockaddr *addr = p;
1224 if(!is_valid_ether_addr(addr->sa_data))
1225 return -EADDRNOTAVAIL;
1227 /* 82542 2.0 needs to be in reset to write receive address registers */
1229 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1230 e1000_enter_82542_rst(adapter);
1232 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1233 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
1235 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
1237 if(adapter->hw.mac_type == e1000_82542_rev2_0)
1238 e1000_leave_82542_rst(adapter);
1244 * e1000_set_multi - Multicast and Promiscuous mode set
1245 * @netdev: network interface device structure
1247 * The set_multi entry point is called whenever the multicast address
1248 * list or the network interface flags are updated. This routine is
1249 * responsible for configuring the hardware for proper multicast,
1250 * promiscuous mode, and all-multi behavior.
1254 e1000_set_multi(struct net_device *netdev)
1256 struct e1000_adapter *adapter = netdev->priv;
1257 struct e1000_hw *hw = &adapter->hw;
1258 struct dev_mc_list *mc_ptr;
1260 uint32_t hash_value;
1263 /* Check for Promiscuous and All Multicast modes */
1265 rctl = E1000_READ_REG(hw, RCTL);
1267 if(netdev->flags & IFF_PROMISC) {
1268 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1269 } else if(netdev->flags & IFF_ALLMULTI) {
1270 rctl |= E1000_RCTL_MPE;
1271 rctl &= ~E1000_RCTL_UPE;
1273 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
1276 E1000_WRITE_REG(hw, RCTL, rctl);
1278 /* 82542 2.0 needs to be in reset to write receive address registers */
1280 if(hw->mac_type == e1000_82542_rev2_0)
1281 e1000_enter_82542_rst(adapter);
1283 /* load the first 14 multicast address into the exact filters 1-14
1284 * RAR 0 is used for the station MAC adddress
1285 * if there are not 14 addresses, go ahead and clear the filters
1287 mc_ptr = netdev->mc_list;
1289 for(i = 1; i < E1000_RAR_ENTRIES; i++) {
1291 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
1292 mc_ptr = mc_ptr->next;
1294 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
1295 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
1299 /* clear the old settings from the multicast hash table */
1301 for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
1302 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1304 /* load any remaining addresses into the hash table */
1306 for(; mc_ptr; mc_ptr = mc_ptr->next) {
1307 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
1308 e1000_mta_set(hw, hash_value);
1311 if(hw->mac_type == e1000_82542_rev2_0)
1312 e1000_leave_82542_rst(adapter);
1315 /* need to wait a few seconds after link up to get diagnostic information from the phy */
1318 e1000_update_phy_info(unsigned long data)
1320 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1321 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
1325 * e1000_82547_tx_fifo_stall - Timer Call-back
1326 * @data: pointer to adapter cast into an unsigned long
1330 e1000_82547_tx_fifo_stall(unsigned long data)
1332 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1333 struct net_device *netdev = adapter->netdev;
1336 if(atomic_read(&adapter->tx_fifo_stall)) {
1337 if((E1000_READ_REG(&adapter->hw, TDT) ==
1338 E1000_READ_REG(&adapter->hw, TDH)) &&
1339 (E1000_READ_REG(&adapter->hw, TDFT) ==
1340 E1000_READ_REG(&adapter->hw, TDFH)) &&
1341 (E1000_READ_REG(&adapter->hw, TDFTS) ==
1342 E1000_READ_REG(&adapter->hw, TDFHS))) {
1343 tctl = E1000_READ_REG(&adapter->hw, TCTL);
1344 E1000_WRITE_REG(&adapter->hw, TCTL,
1345 tctl & ~E1000_TCTL_EN);
1346 E1000_WRITE_REG(&adapter->hw, TDFT,
1347 adapter->tx_head_addr);
1348 E1000_WRITE_REG(&adapter->hw, TDFH,
1349 adapter->tx_head_addr);
1350 E1000_WRITE_REG(&adapter->hw, TDFTS,
1351 adapter->tx_head_addr);
1352 E1000_WRITE_REG(&adapter->hw, TDFHS,
1353 adapter->tx_head_addr);
1354 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
1355 E1000_WRITE_FLUSH(&adapter->hw);
1357 adapter->tx_fifo_head = 0;
1358 atomic_set(&adapter->tx_fifo_stall, 0);
1359 netif_wake_queue(netdev);
1361 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
1367 * e1000_watchdog - Timer Call-back
1368 * @data: pointer to netdev cast into an unsigned long
1372 e1000_watchdog(unsigned long data)
1374 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1375 struct net_device *netdev = adapter->netdev;
1376 struct e1000_desc_ring *txdr = &adapter->tx_ring;
1380 e1000_check_for_link(&adapter->hw);
1382 if((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
1383 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
1384 link = !adapter->hw.serdes_link_down;
1386 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
1389 if(!netif_carrier_ok(netdev)) {
1390 e1000_get_speed_and_duplex(&adapter->hw,
1391 &adapter->link_speed,
1392 &adapter->link_duplex);
1394 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
1395 adapter->link_speed,
1396 adapter->link_duplex == FULL_DUPLEX ?
1397 "Full Duplex" : "Half Duplex");
1399 netif_carrier_on(netdev);
1400 netif_wake_queue(netdev);
1401 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1402 adapter->smartspeed = 0;
1405 if(netif_carrier_ok(netdev)) {
1406 adapter->link_speed = 0;
1407 adapter->link_duplex = 0;
1408 DPRINTK(LINK, INFO, "NIC Link is Down\n");
1409 netif_carrier_off(netdev);
1410 netif_stop_queue(netdev);
1411 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
1414 e1000_smartspeed(adapter);
1417 e1000_update_stats(adapter);
1419 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
1420 adapter->tpt_old = adapter->stats.tpt;
1421 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
1422 adapter->colc_old = adapter->stats.colc;
1424 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
1425 adapter->gorcl_old = adapter->stats.gorcl;
1426 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
1427 adapter->gotcl_old = adapter->stats.gotcl;
1429 e1000_update_adaptive(&adapter->hw);
1431 if(!netif_carrier_ok(netdev)) {
1432 if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
1433 /* We've lost link, so the controller stops DMA,
1434 * but we've got queued Tx work that's never going
1435 * to get done, so reset controller to flush Tx.
1436 * (Do the reset outside of interrupt context). */
1437 schedule_work(&adapter->tx_timeout_task);
1441 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
1442 if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
1443 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
1444 * asymmetrical Tx or Rx gets ITR=8000; everyone
1445 * else is between 2000-8000. */
1446 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
1447 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
1448 adapter->gotcl - adapter->gorcl :
1449 adapter->gorcl - adapter->gotcl) / 10000;
1450 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
1451 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
1454 /* Cause software interrupt to ensure rx ring is cleaned */
1455 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
1457 /* Early detection of hung controller */
1458 i = txdr->next_to_clean;
1459 if(txdr->buffer_info[i].dma &&
1460 time_after(jiffies, txdr->buffer_info[i].time_stamp + HZ) &&
1461 !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF))
1462 netif_stop_queue(netdev);
1464 /* Reset the timer */
1465 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1468 #define E1000_TX_FLAGS_CSUM 0x00000001
1469 #define E1000_TX_FLAGS_VLAN 0x00000002
1470 #define E1000_TX_FLAGS_TSO 0x00000004
1471 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
1472 #define E1000_TX_FLAGS_VLAN_SHIFT 16
1474 static inline boolean_t
1475 e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb)
1478 struct e1000_context_desc *context_desc;
1480 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
1481 uint16_t ipcse, tucse, mss;
1483 if(skb_shinfo(skb)->tso_size) {
1484 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
1485 mss = skb_shinfo(skb)->tso_size;
1486 skb->nh.iph->tot_len = 0;
1487 skb->nh.iph->check = 0;
1488 skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
1493 ipcss = skb->nh.raw - skb->data;
1494 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
1495 ipcse = skb->h.raw - skb->data - 1;
1496 tucss = skb->h.raw - skb->data;
1497 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
1500 i = adapter->tx_ring.next_to_use;
1501 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1503 context_desc->lower_setup.ip_fields.ipcss = ipcss;
1504 context_desc->lower_setup.ip_fields.ipcso = ipcso;
1505 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
1506 context_desc->upper_setup.tcp_fields.tucss = tucss;
1507 context_desc->upper_setup.tcp_fields.tucso = tucso;
1508 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
1509 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
1510 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
1511 context_desc->cmd_and_length = cpu_to_le32(
1512 E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
1513 E1000_TXD_CMD_IP | E1000_TXD_CMD_TCP |
1514 (skb->len - (hdr_len)));
1516 if(++i == adapter->tx_ring.count) i = 0;
1517 adapter->tx_ring.next_to_use = i;
1526 static inline boolean_t
1527 e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
1529 struct e1000_context_desc *context_desc;
1533 if(skb->ip_summed == CHECKSUM_HW) {
1534 css = skb->h.raw - skb->data;
1535 cso = (skb->h.raw + skb->csum) - skb->data;
1537 i = adapter->tx_ring.next_to_use;
1538 context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i);
1540 context_desc->upper_setup.tcp_fields.tucss = css;
1541 context_desc->upper_setup.tcp_fields.tucso = cso;
1542 context_desc->upper_setup.tcp_fields.tucse = 0;
1543 context_desc->tcp_seg_setup.data = 0;
1544 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
1546 if(++i == adapter->tx_ring.count) i = 0;
1547 adapter->tx_ring.next_to_use = i;
1555 #define E1000_MAX_TXD_PWR 12
1556 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
1559 e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb,
1560 unsigned int first, unsigned int max_per_txd,
1561 unsigned int nr_frags, unsigned int mss)
1563 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1564 struct e1000_buffer *buffer_info;
1565 unsigned int len = skb->len;
1566 unsigned int offset = 0, size, count = 0, i;
1568 len -= skb->data_len;
1571 i = tx_ring->next_to_use;
1574 buffer_info = &tx_ring->buffer_info[i];
1575 size = min(len, max_per_txd);
1577 /* Workaround for premature desc write-backs
1578 * in TSO mode. Append 4-byte sentinel desc */
1579 if(mss && !nr_frags && size == len && size > 8)
1582 /* Workaround for potential 82544 hang in PCI-X. Avoid
1583 * terminating buffers within evenly-aligned dwords. */
1584 if(adapter->pcix_82544 &&
1585 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
1589 buffer_info->length = size;
1591 pci_map_single(adapter->pdev,
1595 buffer_info->time_stamp = jiffies;
1600 if(++i == tx_ring->count) i = 0;
1603 for(f = 0; f < nr_frags; f++) {
1604 struct skb_frag_struct *frag;
1606 frag = &skb_shinfo(skb)->frags[f];
1608 offset = frag->page_offset;
1611 buffer_info = &tx_ring->buffer_info[i];
1612 size = min(len, max_per_txd);
1614 /* Workaround for premature desc write-backs
1615 * in TSO mode. Append 4-byte sentinel desc */
1616 if(mss && f == (nr_frags-1) && size == len && size > 8)
1619 /* Workaround for potential 82544 hang in PCI-X.
1620 * Avoid terminating buffers within evenly-aligned
1622 if(adapter->pcix_82544 &&
1623 !((unsigned long)(frag->page+offset+size-1) & 4) &&
1627 buffer_info->length = size;
1629 pci_map_page(adapter->pdev,
1634 buffer_info->time_stamp = jiffies;
1639 if(++i == tx_ring->count) i = 0;
1642 i = (i == 0) ? tx_ring->count - 1 : i - 1;
1643 tx_ring->buffer_info[i].skb = skb;
1644 tx_ring->buffer_info[first].next_to_watch = i;
1650 e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags)
1652 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
1653 struct e1000_tx_desc *tx_desc = NULL;
1654 struct e1000_buffer *buffer_info;
1655 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
1658 if(tx_flags & E1000_TX_FLAGS_TSO) {
1659 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
1661 txd_upper |= (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8;
1664 if(tx_flags & E1000_TX_FLAGS_CSUM) {
1665 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
1666 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
1669 if(tx_flags & E1000_TX_FLAGS_VLAN) {
1670 txd_lower |= E1000_TXD_CMD_VLE;
1671 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
1674 i = tx_ring->next_to_use;
1677 buffer_info = &tx_ring->buffer_info[i];
1678 tx_desc = E1000_TX_DESC(*tx_ring, i);
1679 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1680 tx_desc->lower.data =
1681 cpu_to_le32(txd_lower | buffer_info->length);
1682 tx_desc->upper.data = cpu_to_le32(txd_upper);
1683 if(++i == tx_ring->count) i = 0;
1686 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
1688 /* Force memory writes to complete before letting h/w
1689 * know there are new descriptors to fetch. (Only
1690 * applicable for weak-ordered memory model archs,
1691 * such as IA-64). */
1694 tx_ring->next_to_use = i;
1695 E1000_WRITE_REG(&adapter->hw, TDT, i);
1699 * 82547 workaround to avoid controller hang in half-duplex environment.
1700 * The workaround is to avoid queuing a large packet that would span
1701 * the internal Tx FIFO ring boundary by notifying the stack to resend
1702 * the packet at a later time. This gives the Tx FIFO an opportunity to
1703 * flush all packets. When that occurs, we reset the Tx FIFO pointers
1704 * to the beginning of the Tx FIFO.
1707 #define E1000_FIFO_HDR 0x10
1708 #define E1000_82547_PAD_LEN 0x3E0
1711 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
1713 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
1714 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
1716 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
1718 if(adapter->link_duplex != HALF_DUPLEX)
1719 goto no_fifo_stall_required;
1721 if(atomic_read(&adapter->tx_fifo_stall))
1724 if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
1725 atomic_set(&adapter->tx_fifo_stall, 1);
1729 no_fifo_stall_required:
1730 adapter->tx_fifo_head += skb_fifo_len;
1731 if(adapter->tx_fifo_head >= adapter->tx_fifo_size)
1732 adapter->tx_fifo_head -= adapter->tx_fifo_size;
1736 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
1738 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1740 struct e1000_adapter *adapter = netdev->priv;
1741 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
1742 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
1743 unsigned int tx_flags = 0;
1744 unsigned long flags;
1745 unsigned int len = skb->len;
1747 unsigned int mss = 0;
1748 unsigned int nr_frags = 0;
1750 nr_frags = skb_shinfo(skb)->nr_frags;
1751 len -= skb->data_len;
1753 dev_kfree_skb_any(skb);
1758 mss = skb_shinfo(skb)->tso_size;
1759 /* The controller does a simple calculation to
1760 * make sure there is enough room in the FIFO before
1761 * initiating the DMA for each buffer. The calc is:
1762 * 4 = ceil(buffer len/mss). To make sure we don't
1763 * overrun the FIFO, adjust the max buffer len if mss
1766 max_per_txd = min(mss << 2, max_per_txd);
1767 max_txd_pwr = fls(max_per_txd) - 1;
1769 if((mss) || (skb->ip_summed == CHECKSUM_HW))
1771 count++; /*for sentinel desc*/
1773 if(skb->ip_summed == CHECKSUM_HW)
1777 count += TXD_USE_COUNT(len, max_txd_pwr);
1778 if(adapter->pcix_82544)
1781 nr_frags = skb_shinfo(skb)->nr_frags;
1782 for(f = 0; f < nr_frags; f++)
1783 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
1785 if(adapter->pcix_82544)
1788 spin_lock_irqsave(&adapter->tx_lock, flags);
1789 /* need: count + 2 desc gap to keep tail from touching
1790 * head, otherwise try next time */
1791 if(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2 ) {
1792 netif_stop_queue(netdev);
1793 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1796 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1798 if(adapter->hw.mac_type == e1000_82547) {
1799 if(e1000_82547_fifo_workaround(adapter, skb)) {
1800 netif_stop_queue(netdev);
1801 mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
1806 if(adapter->vlgrp && vlan_tx_tag_present(skb)) {
1807 tx_flags |= E1000_TX_FLAGS_VLAN;
1808 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
1811 first = adapter->tx_ring.next_to_use;
1813 if(e1000_tso(adapter, skb))
1814 tx_flags |= E1000_TX_FLAGS_TSO;
1815 else if(e1000_tx_csum(adapter, skb))
1816 tx_flags |= E1000_TX_FLAGS_CSUM;
1818 e1000_tx_queue(adapter,
1819 e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss),
1822 netdev->trans_start = jiffies;
1828 * e1000_tx_timeout - Respond to a Tx Hang
1829 * @netdev: network interface device structure
1833 e1000_tx_timeout(struct net_device *netdev)
1835 struct e1000_adapter *adapter = netdev->priv;
1837 /* Do the reset outside of interrupt context */
1838 schedule_work(&adapter->tx_timeout_task);
1842 e1000_tx_timeout_task(struct net_device *netdev)
1844 struct e1000_adapter *adapter = netdev->priv;
1846 netif_device_detach(netdev);
1847 e1000_down(adapter);
1849 netif_device_attach(netdev);
1853 * e1000_get_stats - Get System Network Statistics
1854 * @netdev: network interface device structure
1856 * Returns the address of the device statistics structure.
1857 * The statistics are actually updated from the timer callback.
1860 static struct net_device_stats *
1861 e1000_get_stats(struct net_device *netdev)
1863 struct e1000_adapter *adapter = netdev->priv;
1865 e1000_update_stats(adapter);
1866 return &adapter->net_stats;
1870 * e1000_change_mtu - Change the Maximum Transfer Unit
1871 * @netdev: network interface device structure
1872 * @new_mtu: new value for maximum frame size
1874 * Returns 0 on success, negative on failure
1878 e1000_change_mtu(struct net_device *netdev, int new_mtu)
1880 struct e1000_adapter *adapter = netdev->priv;
1881 int old_mtu = adapter->rx_buffer_len;
1882 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1884 if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
1885 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
1886 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
1890 if(max_frame <= MAXIMUM_ETHERNET_FRAME_SIZE) {
1891 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
1893 } else if(adapter->hw.mac_type < e1000_82543) {
1894 DPRINTK(PROBE, ERR, "Jumbo Frames not supported on 82542\n");
1897 } else if(max_frame <= E1000_RXBUFFER_4096) {
1898 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
1900 } else if(max_frame <= E1000_RXBUFFER_8192) {
1901 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
1904 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
1907 if(old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
1909 e1000_down(adapter);
1913 netdev->mtu = new_mtu;
1914 adapter->hw.max_frame_size = max_frame;
1920 * e1000_update_stats - Update the board statistics counters
1921 * @adapter: board private structure
1925 e1000_update_stats(struct e1000_adapter *adapter)
1927 struct e1000_hw *hw = &adapter->hw;
1928 unsigned long flags;
1931 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
1933 spin_lock_irqsave(&adapter->stats_lock, flags);
1935 /* these counters are modified from e1000_adjust_tbi_stats,
1936 * called from the interrupt context, so they must only
1937 * be written while holding adapter->stats_lock
1940 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
1941 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
1942 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
1943 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
1944 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
1945 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
1946 adapter->stats.roc += E1000_READ_REG(hw, ROC);
1947 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
1948 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
1949 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
1950 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
1951 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
1952 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
1954 /* the rest of the counters are only modified here */
1956 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
1957 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
1958 adapter->stats.scc += E1000_READ_REG(hw, SCC);
1959 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
1960 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
1961 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
1962 adapter->stats.dc += E1000_READ_REG(hw, DC);
1963 adapter->stats.sec += E1000_READ_REG(hw, SEC);
1964 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
1965 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
1966 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
1967 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
1968 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
1969 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
1970 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
1971 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
1972 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
1973 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
1974 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
1975 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
1976 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
1977 adapter->stats.torl += E1000_READ_REG(hw, TORL);
1978 adapter->stats.torh += E1000_READ_REG(hw, TORH);
1979 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
1980 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
1981 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
1982 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
1983 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
1984 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
1985 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
1986 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
1987 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
1988 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
1989 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
1991 /* used for adaptive IFS */
1993 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
1994 adapter->stats.tpt += hw->tx_packet_delta;
1995 hw->collision_delta = E1000_READ_REG(hw, COLC);
1996 adapter->stats.colc += hw->collision_delta;
1998 if(hw->mac_type >= e1000_82543) {
1999 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
2000 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
2001 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
2002 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
2003 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
2004 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
2007 /* Fill out the OS statistics structure */
2009 adapter->net_stats.rx_packets = adapter->stats.gprc;
2010 adapter->net_stats.tx_packets = adapter->stats.gptc;
2011 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
2012 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
2013 adapter->net_stats.multicast = adapter->stats.mprc;
2014 adapter->net_stats.collisions = adapter->stats.colc;
2018 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2019 adapter->stats.crcerrs + adapter->stats.algnerrc +
2020 adapter->stats.rlec + adapter->stats.rnbc +
2021 adapter->stats.mpc + adapter->stats.cexterr;
2022 adapter->net_stats.rx_dropped = adapter->stats.rnbc;
2023 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
2024 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2025 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2026 adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
2027 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2031 adapter->net_stats.tx_errors = adapter->stats.ecol +
2032 adapter->stats.latecol;
2033 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2034 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2035 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2037 /* Tx Dropped needs to be maintained elsewhere */
2041 if(hw->media_type == e1000_media_type_copper) {
2042 if((adapter->link_speed == SPEED_1000) &&
2043 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
2044 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2045 adapter->phy_stats.idle_errors += phy_tmp;
2048 if((hw->mac_type <= e1000_82546) &&
2049 (hw->phy_type == e1000_phy_m88) &&
2050 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
2051 adapter->phy_stats.receive_errors += phy_tmp;
2054 spin_unlock_irqrestore(&adapter->stats_lock, flags);
2058 * e1000_irq_disable - Mask off interrupt generation on the NIC
2059 * @adapter: board private structure
2063 e1000_irq_disable(struct e1000_adapter *adapter)
2065 atomic_inc(&adapter->irq_sem);
2066 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
2067 E1000_WRITE_FLUSH(&adapter->hw);
2068 synchronize_irq(adapter->pdev->irq);
2072 * e1000_irq_enable - Enable default interrupt generation settings
2073 * @adapter: board private structure
2077 e1000_irq_enable(struct e1000_adapter *adapter)
2079 if(atomic_dec_and_test(&adapter->irq_sem)) {
2080 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
2081 E1000_WRITE_FLUSH(&adapter->hw);
2086 * e1000_intr - Interrupt Handler
2087 * @irq: interrupt number
2088 * @data: pointer to a network interface device structure
2089 * @pt_regs: CPU registers structure
2093 e1000_intr(int irq, void *data, struct pt_regs *regs)
2095 struct net_device *netdev = data;
2096 struct e1000_adapter *adapter = netdev->priv;
2097 struct e1000_hw *hw = &adapter->hw;
2098 uint32_t icr = E1000_READ_REG(&adapter->hw, ICR);
2099 #ifndef CONFIG_E1000_NAPI
2104 return IRQ_NONE; /* Not our interrupt */
2106 if(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
2107 hw->get_link_status = 1;
2108 mod_timer(&adapter->watchdog_timer, jiffies);
2111 #ifdef CONFIG_E1000_NAPI
2112 if(netif_rx_schedule_prep(netdev)) {
2114 /* Disable interrupts and register for poll. The flush
2115 of the posted write is intentionally left out.
2118 atomic_inc(&adapter->irq_sem);
2119 E1000_WRITE_REG(hw, IMC, ~0);
2120 __netif_rx_schedule(netdev);
2123 for(i = 0; i < E1000_MAX_INTR; i++)
2124 if(!e1000_clean_rx_irq(adapter) &
2125 !e1000_clean_tx_irq(adapter))
2132 #ifdef CONFIG_E1000_NAPI
2134 * e1000_clean - NAPI Rx polling callback
2135 * @adapter: board private structure
2139 e1000_clean(struct net_device *netdev, int *budget)
2141 struct e1000_adapter *adapter = netdev->priv;
2142 int work_to_do = min(*budget, netdev->quota);
2145 e1000_clean_tx_irq(adapter);
2146 e1000_clean_rx_irq(adapter, &work_done, work_to_do);
2148 *budget -= work_done;
2149 netdev->quota -= work_done;
2151 if(work_done < work_to_do || !netif_running(netdev)) {
2152 netif_rx_complete(netdev);
2153 e1000_irq_enable(adapter);
2157 return (work_done >= work_to_do);
2162 * e1000_clean_tx_irq - Reclaim resources after transmit completes
2163 * @adapter: board private structure
2167 e1000_clean_tx_irq(struct e1000_adapter *adapter)
2169 struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
2170 struct net_device *netdev = adapter->netdev;
2171 struct pci_dev *pdev = adapter->pdev;
2172 struct e1000_tx_desc *tx_desc, *eop_desc;
2173 struct e1000_buffer *buffer_info;
2174 unsigned int i, eop;
2175 boolean_t cleaned = FALSE;
2178 i = tx_ring->next_to_clean;
2179 eop = tx_ring->buffer_info[i].next_to_watch;
2180 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2182 while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
2184 for(cleaned = FALSE; !cleaned; ) {
2185 tx_desc = E1000_TX_DESC(*tx_ring, i);
2186 buffer_info = &tx_ring->buffer_info[i];
2188 if(buffer_info->dma) {
2190 pci_unmap_page(pdev,
2192 buffer_info->length,
2195 buffer_info->dma = 0;
2198 if(buffer_info->skb) {
2200 dev_kfree_skb_any(buffer_info->skb);
2202 buffer_info->skb = NULL;
2205 tx_desc->buffer_addr = 0;
2206 tx_desc->lower.data = 0;
2207 tx_desc->upper.data = 0;
2209 cleaned = (i == eop);
2210 if(++i == tx_ring->count) i = 0;
2213 eop = tx_ring->buffer_info[i].next_to_watch;
2214 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2217 tx_ring->next_to_clean = i;
2219 spin_lock(&adapter->tx_lock);
2221 if(cleaned && netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
2222 netif_wake_queue(netdev);
2224 spin_unlock(&adapter->tx_lock);
2230 * e1000_clean_rx_irq - Send received data up the network stack,
2231 * @adapter: board private structure
2235 #ifdef CONFIG_E1000_NAPI
2236 e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done,
2239 e1000_clean_rx_irq(struct e1000_adapter *adapter)
2242 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2243 struct net_device *netdev = adapter->netdev;
2244 struct pci_dev *pdev = adapter->pdev;
2245 struct e1000_rx_desc *rx_desc;
2246 struct e1000_buffer *buffer_info;
2247 struct sk_buff *skb;
2248 unsigned long flags;
2252 boolean_t cleaned = FALSE;
2254 i = rx_ring->next_to_clean;
2255 rx_desc = E1000_RX_DESC(*rx_ring, i);
2257 while(rx_desc->status & E1000_RXD_STAT_DD) {
2258 buffer_info = &rx_ring->buffer_info[i];
2260 #ifdef CONFIG_E1000_NAPI
2261 if(*work_done >= work_to_do)
2269 pci_unmap_single(pdev,
2271 buffer_info->length,
2272 PCI_DMA_FROMDEVICE);
2274 skb = buffer_info->skb;
2275 length = le16_to_cpu(rx_desc->length);
2277 if(!(rx_desc->status & E1000_RXD_STAT_EOP)) {
2279 /* All receives must fit into a single buffer */
2281 E1000_DBG("%s: Receive packet consumed multiple buffers\n",
2284 dev_kfree_skb_irq(skb);
2285 rx_desc->status = 0;
2286 buffer_info->skb = NULL;
2288 if(++i == rx_ring->count) i = 0;
2290 rx_desc = E1000_RX_DESC(*rx_ring, i);
2294 if(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
2296 last_byte = *(skb->data + length - 1);
2298 if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
2299 rx_desc->errors, length, last_byte)) {
2301 spin_lock_irqsave(&adapter->stats_lock, flags);
2303 e1000_tbi_adjust_stats(&adapter->hw,
2307 spin_unlock_irqrestore(&adapter->stats_lock,
2312 dev_kfree_skb_irq(skb);
2313 rx_desc->status = 0;
2314 buffer_info->skb = NULL;
2316 if(++i == rx_ring->count) i = 0;
2318 rx_desc = E1000_RX_DESC(*rx_ring, i);
2324 skb_put(skb, length - ETHERNET_FCS_SIZE);
2326 /* Receive Checksum Offload */
2327 e1000_rx_checksum(adapter, rx_desc, skb);
2329 skb->protocol = eth_type_trans(skb, netdev);
2330 #ifdef CONFIG_E1000_NAPI
2331 if(adapter->vlgrp && (rx_desc->status & E1000_RXD_STAT_VP)) {
2332 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
2333 le16_to_cpu(rx_desc->special &
2334 E1000_RXD_SPC_VLAN_MASK));
2336 netif_receive_skb(skb);
2338 #else /* CONFIG_E1000_NAPI */
2339 if(adapter->vlgrp && (rx_desc->status & E1000_RXD_STAT_VP)) {
2340 vlan_hwaccel_rx(skb, adapter->vlgrp,
2341 le16_to_cpu(rx_desc->special &
2342 E1000_RXD_SPC_VLAN_MASK));
2346 #endif /* CONFIG_E1000_NAPI */
2347 netdev->last_rx = jiffies;
2349 rx_desc->status = 0;
2350 buffer_info->skb = NULL;
2352 if(++i == rx_ring->count) i = 0;
2354 rx_desc = E1000_RX_DESC(*rx_ring, i);
2357 rx_ring->next_to_clean = i;
2359 e1000_alloc_rx_buffers(adapter);
2365 * e1000_alloc_rx_buffers - Replace used receive buffers
2366 * @adapter: address of board private structure
2370 e1000_alloc_rx_buffers(struct e1000_adapter *adapter)
2372 struct e1000_desc_ring *rx_ring = &adapter->rx_ring;
2373 struct net_device *netdev = adapter->netdev;
2374 struct pci_dev *pdev = adapter->pdev;
2375 struct e1000_rx_desc *rx_desc;
2376 struct e1000_buffer *buffer_info;
2377 struct sk_buff *skb;
2380 i = rx_ring->next_to_use;
2381 buffer_info = &rx_ring->buffer_info[i];
2383 while(!buffer_info->skb) {
2384 rx_desc = E1000_RX_DESC(*rx_ring, i);
2386 skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
2389 /* Better luck next round */
2393 /* Make buffer alignment 2 beyond a 16 byte boundary
2394 * this will result in a 16 byte aligned IP header after
2395 * the 14 byte MAC header is removed
2397 skb_reserve(skb, NET_IP_ALIGN);
2401 buffer_info->skb = skb;
2402 buffer_info->length = adapter->rx_buffer_len;
2404 pci_map_single(pdev,
2406 adapter->rx_buffer_len,
2407 PCI_DMA_FROMDEVICE);
2409 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2411 if((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i) {
2412 /* Force memory writes to complete before letting h/w
2413 * know there are new descriptors to fetch. (Only
2414 * applicable for weak-ordered memory model archs,
2415 * such as IA-64). */
2418 E1000_WRITE_REG(&adapter->hw, RDT, i);
2421 if(++i == rx_ring->count) i = 0;
2422 buffer_info = &rx_ring->buffer_info[i];
2425 rx_ring->next_to_use = i;
2429 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
2434 e1000_smartspeed(struct e1000_adapter *adapter)
2436 uint16_t phy_status;
2439 if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
2440 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
2443 if(adapter->smartspeed == 0) {
2444 /* If Master/Slave config fault is asserted twice,
2445 * we assume back-to-back */
2446 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2447 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2448 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
2449 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
2450 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2451 if(phy_ctrl & CR_1000T_MS_ENABLE) {
2452 phy_ctrl &= ~CR_1000T_MS_ENABLE;
2453 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
2455 adapter->smartspeed++;
2456 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2457 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
2459 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2460 MII_CR_RESTART_AUTO_NEG);
2461 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
2466 } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
2467 /* If still no link, perhaps using 2/3 pair cable */
2468 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
2469 phy_ctrl |= CR_1000T_MS_ENABLE;
2470 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
2471 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
2472 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
2473 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
2474 MII_CR_RESTART_AUTO_NEG);
2475 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
2478 /* Restart process after E1000_SMARTSPEED_MAX iterations */
2479 if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
2480 adapter->smartspeed = 0;
2491 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2497 return e1000_mii_ioctl(netdev, ifr, cmd);
2511 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2513 struct e1000_adapter *adapter = netdev->priv;
2514 struct mii_ioctl_data *data = if_mii(ifr);
2519 if(adapter->hw.media_type != e1000_media_type_copper)
2524 data->phy_id = adapter->hw.phy_addr;
2527 if (!capable(CAP_NET_ADMIN))
2529 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
2534 if (!capable(CAP_NET_ADMIN))
2536 if (data->reg_num & ~(0x1F))
2538 mii_reg = data->val_in;
2539 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
2542 if (adapter->hw.phy_type == e1000_phy_m88) {
2543 switch (data->reg_num) {
2545 if(data->val_in & MII_CR_AUTO_NEG_EN) {
2546 adapter->hw.autoneg = 1;
2547 adapter->hw.autoneg_advertised = 0x2F;
2549 if (data->val_in & 0x40)
2550 spddplx = SPEED_1000;
2551 else if (data->val_in & 0x2000)
2552 spddplx = SPEED_100;
2555 spddplx += (data->val_in & 0x100)
2558 retval = e1000_set_spd_dplx(adapter,
2563 if(netif_running(adapter->netdev)) {
2564 e1000_down(adapter);
2567 e1000_reset(adapter);
2569 case M88E1000_PHY_SPEC_CTRL:
2570 case M88E1000_EXT_PHY_SPEC_CTRL:
2571 if (e1000_phy_reset(&adapter->hw))
2580 return E1000_SUCCESS;
2584 * e1000_rx_checksum - Receive Checksum Offload for 82543
2585 * @adapter: board private structure
2586 * @rx_desc: receive descriptor
2587 * @sk_buff: socket buffer with received data
2591 e1000_rx_checksum(struct e1000_adapter *adapter,
2592 struct e1000_rx_desc *rx_desc,
2593 struct sk_buff *skb)
2595 /* 82543 or newer only */
2596 if((adapter->hw.mac_type < e1000_82543) ||
2597 /* Ignore Checksum bit is set */
2598 (rx_desc->status & E1000_RXD_STAT_IXSM) ||
2599 /* TCP Checksum has not been calculated */
2600 (!(rx_desc->status & E1000_RXD_STAT_TCPCS))) {
2601 skb->ip_summed = CHECKSUM_NONE;
2605 /* At this point we know the hardware did the TCP checksum */
2606 /* now look at the TCP checksum error bit */
2607 if(rx_desc->errors & E1000_RXD_ERR_TCPE) {
2608 /* let the stack verify checksum errors */
2609 skb->ip_summed = CHECKSUM_NONE;
2610 adapter->hw_csum_err++;
2612 /* TCP checksum is good */
2613 skb->ip_summed = CHECKSUM_UNNECESSARY;
2614 adapter->hw_csum_good++;
2619 e1000_pci_set_mwi(struct e1000_hw *hw)
2621 struct e1000_adapter *adapter = hw->back;
2623 pci_set_mwi(adapter->pdev);
2627 e1000_pci_clear_mwi(struct e1000_hw *hw)
2629 struct e1000_adapter *adapter = hw->back;
2631 pci_clear_mwi(adapter->pdev);
2635 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2637 struct e1000_adapter *adapter = hw->back;
2639 pci_read_config_word(adapter->pdev, reg, value);
2643 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
2645 struct e1000_adapter *adapter = hw->back;
2647 pci_write_config_word(adapter->pdev, reg, *value);
2651 e1000_io_read(struct e1000_hw *hw, unsigned long port)
2657 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
2663 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2665 struct e1000_adapter *adapter = netdev->priv;
2666 uint32_t ctrl, rctl;
2668 e1000_irq_disable(adapter);
2669 adapter->vlgrp = grp;
2672 /* enable VLAN tag insert/strip */
2674 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2675 ctrl |= E1000_CTRL_VME;
2676 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2678 /* enable VLAN receive filtering */
2680 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2681 rctl |= E1000_RCTL_VFE;
2682 rctl &= ~E1000_RCTL_CFIEN;
2683 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2685 /* disable VLAN tag insert/strip */
2687 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2688 ctrl &= ~E1000_CTRL_VME;
2689 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2691 /* disable VLAN filtering */
2693 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2694 rctl &= ~E1000_RCTL_VFE;
2695 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2698 e1000_irq_enable(adapter);
2702 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
2704 struct e1000_adapter *adapter = netdev->priv;
2705 uint32_t vfta, index;
2707 /* add VID to filter table */
2709 index = (vid >> 5) & 0x7F;
2710 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2711 vfta |= (1 << (vid & 0x1F));
2712 e1000_write_vfta(&adapter->hw, index, vfta);
2716 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
2718 struct e1000_adapter *adapter = netdev->priv;
2719 uint32_t vfta, index;
2721 e1000_irq_disable(adapter);
2724 adapter->vlgrp->vlan_devices[vid] = NULL;
2726 e1000_irq_enable(adapter);
2728 /* remove VID from filter table*/
2730 index = (vid >> 5) & 0x7F;
2731 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2732 vfta &= ~(1 << (vid & 0x1F));
2733 e1000_write_vfta(&adapter->hw, index, vfta);
2737 e1000_restore_vlan(struct e1000_adapter *adapter)
2739 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2741 if(adapter->vlgrp) {
2743 for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2744 if(!adapter->vlgrp->vlan_devices[vid])
2746 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2752 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
2754 adapter->hw.autoneg = 0;
2757 case SPEED_10 + DUPLEX_HALF:
2758 adapter->hw.forced_speed_duplex = e1000_10_half;
2760 case SPEED_10 + DUPLEX_FULL:
2761 adapter->hw.forced_speed_duplex = e1000_10_full;
2763 case SPEED_100 + DUPLEX_HALF:
2764 adapter->hw.forced_speed_duplex = e1000_100_half;
2766 case SPEED_100 + DUPLEX_FULL:
2767 adapter->hw.forced_speed_duplex = e1000_100_full;
2769 case SPEED_1000 + DUPLEX_FULL:
2770 adapter->hw.autoneg = 1;
2771 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
2773 case SPEED_1000 + DUPLEX_HALF: /* not supported */
2781 e1000_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
2783 struct pci_dev *pdev = NULL;
2789 while((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
2790 if(pci_dev_driver(pdev) == &e1000_driver)
2791 e1000_suspend(pdev, 3);
2798 e1000_suspend(struct pci_dev *pdev, uint32_t state)
2800 struct net_device *netdev = pci_get_drvdata(pdev);
2801 struct e1000_adapter *adapter = netdev->priv;
2802 uint32_t ctrl, ctrl_ext, rctl, manc, status;
2803 uint32_t wufc = adapter->wol;
2805 netif_device_detach(netdev);
2807 if(netif_running(netdev))
2808 e1000_down(adapter);
2810 status = E1000_READ_REG(&adapter->hw, STATUS);
2811 if(status & E1000_STATUS_LU)
2812 wufc &= ~E1000_WUFC_LNKC;
2815 e1000_setup_rctl(adapter);
2816 e1000_set_multi(netdev);
2818 /* turn on all-multi mode if wake on multicast is enabled */
2819 if(adapter->wol & E1000_WUFC_MC) {
2820 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2821 rctl |= E1000_RCTL_MPE;
2822 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2825 if(adapter->hw.mac_type >= e1000_82540) {
2826 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
2827 /* advertise wake from D3Cold */
2828 #define E1000_CTRL_ADVD3WUC 0x00100000
2829 /* phy power management enable */
2830 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
2831 ctrl |= E1000_CTRL_ADVD3WUC |
2832 E1000_CTRL_EN_PHY_PWR_MGMT;
2833 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
2836 if(adapter->hw.media_type == e1000_media_type_fiber ||
2837 adapter->hw.media_type == e1000_media_type_internal_serdes) {
2838 /* keep the laser running in D3 */
2839 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
2840 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
2841 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
2844 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
2845 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
2846 pci_enable_wake(pdev, 3, 1);
2847 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
2849 E1000_WRITE_REG(&adapter->hw, WUC, 0);
2850 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
2851 pci_enable_wake(pdev, 3, 0);
2852 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
2855 pci_save_state(pdev, adapter->pci_state);
2857 if(adapter->hw.mac_type >= e1000_82540 &&
2858 adapter->hw.media_type == e1000_media_type_copper) {
2859 manc = E1000_READ_REG(&adapter->hw, MANC);
2860 if(manc & E1000_MANC_SMBUS_EN) {
2861 manc |= E1000_MANC_ARP_EN;
2862 E1000_WRITE_REG(&adapter->hw, MANC, manc);
2863 pci_enable_wake(pdev, 3, 1);
2864 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
2868 state = (state > 0) ? 3 : 0;
2869 pci_set_power_state(pdev, state);
2876 e1000_resume(struct pci_dev *pdev)
2878 struct net_device *netdev = pci_get_drvdata(pdev);
2879 struct e1000_adapter *adapter = netdev->priv;
2882 pci_set_power_state(pdev, 0);
2883 pci_restore_state(pdev, adapter->pci_state);
2885 pci_enable_wake(pdev, 3, 0);
2886 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
2888 e1000_reset(adapter);
2889 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
2891 if(netif_running(netdev))
2894 netif_device_attach(netdev);
2896 if(adapter->hw.mac_type >= e1000_82540 &&
2897 adapter->hw.media_type == e1000_media_type_copper) {
2898 manc = E1000_READ_REG(&adapter->hw, MANC);
2899 manc &= ~(E1000_MANC_ARP_EN);
2900 E1000_WRITE_REG(&adapter->hw, MANC, manc);
2907 #ifdef CONFIG_NET_POLL_CONTROLLER
2909 * Polling 'interrupt' - used by things like netconsole to send skbs
2910 * without having to re-enable interrupts. It's not called while
2911 * the interrupt routine is executing.
2914 static void e1000_netpoll (struct net_device *dev)
2916 struct e1000_adapter *adapter = dev->priv;
2917 disable_irq(adapter->pdev->irq);
2918 e1000_intr (adapter->pdev->irq, dev, NULL);
2919 enable_irq(adapter->pdev->irq);