1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
31 char e1000_driver_name[] = "e1000";
32 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
33 #ifndef CONFIG_E1000_NAPI
36 #define DRIVERNAPI "-NAPI"
38 #define DRV_VERSION "7.2.9-k4"DRIVERNAPI
39 char e1000_driver_version[] = DRV_VERSION;
40 static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
42 /* e1000_pci_tbl - PCI Device ID Table
44 * Last entry must be all 0s
47 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
49 static struct pci_device_id e1000_pci_tbl[] = {
50 INTEL_E1000_ETHERNET_DEVICE(0x1000),
51 INTEL_E1000_ETHERNET_DEVICE(0x1001),
52 INTEL_E1000_ETHERNET_DEVICE(0x1004),
53 INTEL_E1000_ETHERNET_DEVICE(0x1008),
54 INTEL_E1000_ETHERNET_DEVICE(0x1009),
55 INTEL_E1000_ETHERNET_DEVICE(0x100C),
56 INTEL_E1000_ETHERNET_DEVICE(0x100D),
57 INTEL_E1000_ETHERNET_DEVICE(0x100E),
58 INTEL_E1000_ETHERNET_DEVICE(0x100F),
59 INTEL_E1000_ETHERNET_DEVICE(0x1010),
60 INTEL_E1000_ETHERNET_DEVICE(0x1011),
61 INTEL_E1000_ETHERNET_DEVICE(0x1012),
62 INTEL_E1000_ETHERNET_DEVICE(0x1013),
63 INTEL_E1000_ETHERNET_DEVICE(0x1014),
64 INTEL_E1000_ETHERNET_DEVICE(0x1015),
65 INTEL_E1000_ETHERNET_DEVICE(0x1016),
66 INTEL_E1000_ETHERNET_DEVICE(0x1017),
67 INTEL_E1000_ETHERNET_DEVICE(0x1018),
68 INTEL_E1000_ETHERNET_DEVICE(0x1019),
69 INTEL_E1000_ETHERNET_DEVICE(0x101A),
70 INTEL_E1000_ETHERNET_DEVICE(0x101D),
71 INTEL_E1000_ETHERNET_DEVICE(0x101E),
72 INTEL_E1000_ETHERNET_DEVICE(0x1026),
73 INTEL_E1000_ETHERNET_DEVICE(0x1027),
74 INTEL_E1000_ETHERNET_DEVICE(0x1028),
75 INTEL_E1000_ETHERNET_DEVICE(0x1049),
76 INTEL_E1000_ETHERNET_DEVICE(0x104A),
77 INTEL_E1000_ETHERNET_DEVICE(0x104B),
78 INTEL_E1000_ETHERNET_DEVICE(0x104C),
79 INTEL_E1000_ETHERNET_DEVICE(0x104D),
80 INTEL_E1000_ETHERNET_DEVICE(0x105E),
81 INTEL_E1000_ETHERNET_DEVICE(0x105F),
82 INTEL_E1000_ETHERNET_DEVICE(0x1060),
83 INTEL_E1000_ETHERNET_DEVICE(0x1075),
84 INTEL_E1000_ETHERNET_DEVICE(0x1076),
85 INTEL_E1000_ETHERNET_DEVICE(0x1077),
86 INTEL_E1000_ETHERNET_DEVICE(0x1078),
87 INTEL_E1000_ETHERNET_DEVICE(0x1079),
88 INTEL_E1000_ETHERNET_DEVICE(0x107A),
89 INTEL_E1000_ETHERNET_DEVICE(0x107B),
90 INTEL_E1000_ETHERNET_DEVICE(0x107C),
91 INTEL_E1000_ETHERNET_DEVICE(0x107D),
92 INTEL_E1000_ETHERNET_DEVICE(0x107E),
93 INTEL_E1000_ETHERNET_DEVICE(0x107F),
94 INTEL_E1000_ETHERNET_DEVICE(0x108A),
95 INTEL_E1000_ETHERNET_DEVICE(0x108B),
96 INTEL_E1000_ETHERNET_DEVICE(0x108C),
97 INTEL_E1000_ETHERNET_DEVICE(0x1096),
98 INTEL_E1000_ETHERNET_DEVICE(0x1098),
99 INTEL_E1000_ETHERNET_DEVICE(0x1099),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
102 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
104 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
106 /* required last entry */
110 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
112 int e1000_up(struct e1000_adapter *adapter);
113 void e1000_down(struct e1000_adapter *adapter);
114 void e1000_reinit_locked(struct e1000_adapter *adapter);
115 void e1000_reset(struct e1000_adapter *adapter);
116 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
117 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
118 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
119 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
120 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
121 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
122 struct e1000_tx_ring *txdr);
123 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
124 struct e1000_rx_ring *rxdr);
125 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
126 struct e1000_tx_ring *tx_ring);
127 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
128 struct e1000_rx_ring *rx_ring);
129 void e1000_update_stats(struct e1000_adapter *adapter);
131 static int e1000_init_module(void);
132 static void e1000_exit_module(void);
133 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
134 static void __devexit e1000_remove(struct pci_dev *pdev);
135 static int e1000_alloc_queues(struct e1000_adapter *adapter);
136 static int e1000_sw_init(struct e1000_adapter *adapter);
137 static int e1000_open(struct net_device *netdev);
138 static int e1000_close(struct net_device *netdev);
139 static void e1000_configure_tx(struct e1000_adapter *adapter);
140 static void e1000_configure_rx(struct e1000_adapter *adapter);
141 static void e1000_setup_rctl(struct e1000_adapter *adapter);
142 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
143 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
144 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
145 struct e1000_tx_ring *tx_ring);
146 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
147 struct e1000_rx_ring *rx_ring);
148 static void e1000_set_multi(struct net_device *netdev);
149 static void e1000_update_phy_info(unsigned long data);
150 static void e1000_watchdog(unsigned long data);
151 static void e1000_82547_tx_fifo_stall(unsigned long data);
152 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
153 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
154 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
155 static int e1000_set_mac(struct net_device *netdev, void *p);
156 static irqreturn_t e1000_intr(int irq, void *data);
157 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter,
158 struct e1000_tx_ring *tx_ring);
159 #ifdef CONFIG_E1000_NAPI
160 static int e1000_clean(struct net_device *poll_dev, int *budget);
161 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
162 struct e1000_rx_ring *rx_ring,
163 int *work_done, int work_to_do);
164 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
165 struct e1000_rx_ring *rx_ring,
166 int *work_done, int work_to_do);
168 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
169 struct e1000_rx_ring *rx_ring);
170 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
171 struct e1000_rx_ring *rx_ring);
173 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
174 struct e1000_rx_ring *rx_ring,
176 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
177 struct e1000_rx_ring *rx_ring,
179 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
180 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
182 void e1000_set_ethtool_ops(struct net_device *netdev);
183 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
184 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
185 static void e1000_tx_timeout(struct net_device *dev);
186 static void e1000_reset_task(struct net_device *dev);
187 static void e1000_smartspeed(struct e1000_adapter *adapter);
188 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
189 struct sk_buff *skb);
191 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
192 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
193 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
194 static void e1000_restore_vlan(struct e1000_adapter *adapter);
196 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
198 static int e1000_resume(struct pci_dev *pdev);
200 static void e1000_shutdown(struct pci_dev *pdev);
202 #ifdef CONFIG_NET_POLL_CONTROLLER
203 /* for netdump / net console */
204 static void e1000_netpoll (struct net_device *netdev);
207 extern void e1000_check_options(struct e1000_adapter *adapter);
209 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
210 pci_channel_state_t state);
211 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
212 static void e1000_io_resume(struct pci_dev *pdev);
214 static struct pci_error_handlers e1000_err_handler = {
215 .error_detected = e1000_io_error_detected,
216 .slot_reset = e1000_io_slot_reset,
217 .resume = e1000_io_resume,
220 static struct pci_driver e1000_driver = {
221 .name = e1000_driver_name,
222 .id_table = e1000_pci_tbl,
223 .probe = e1000_probe,
224 .remove = __devexit_p(e1000_remove),
226 /* Power Managment Hooks */
227 .suspend = e1000_suspend,
228 .resume = e1000_resume,
230 .shutdown = e1000_shutdown,
231 .err_handler = &e1000_err_handler
234 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
235 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
236 MODULE_LICENSE("GPL");
237 MODULE_VERSION(DRV_VERSION);
239 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
240 module_param(debug, int, 0);
241 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
244 * e1000_init_module - Driver Registration Routine
246 * e1000_init_module is the first routine called when the driver is
247 * loaded. All it does is register with the PCI subsystem.
251 e1000_init_module(void)
254 printk(KERN_INFO "%s - version %s\n",
255 e1000_driver_string, e1000_driver_version);
257 printk(KERN_INFO "%s\n", e1000_copyright);
259 ret = pci_register_driver(&e1000_driver);
264 module_init(e1000_init_module);
267 * e1000_exit_module - Driver Exit Cleanup Routine
269 * e1000_exit_module is called just before the driver is removed
274 e1000_exit_module(void)
276 pci_unregister_driver(&e1000_driver);
279 module_exit(e1000_exit_module);
281 static int e1000_request_irq(struct e1000_adapter *adapter)
283 struct net_device *netdev = adapter->netdev;
287 #ifdef CONFIG_PCI_MSI
288 if (adapter->hw.mac_type > e1000_82547_rev_2) {
289 adapter->have_msi = TRUE;
290 if ((err = pci_enable_msi(adapter->pdev))) {
292 "Unable to allocate MSI interrupt Error: %d\n", err);
293 adapter->have_msi = FALSE;
296 if (adapter->have_msi)
297 flags &= ~IRQF_SHARED;
299 if ((err = request_irq(adapter->pdev->irq, &e1000_intr, flags,
300 netdev->name, netdev)))
302 "Unable to allocate interrupt Error: %d\n", err);
307 static void e1000_free_irq(struct e1000_adapter *adapter)
309 struct net_device *netdev = adapter->netdev;
311 free_irq(adapter->pdev->irq, netdev);
313 #ifdef CONFIG_PCI_MSI
314 if (adapter->have_msi)
315 pci_disable_msi(adapter->pdev);
320 * e1000_irq_disable - Mask off interrupt generation on the NIC
321 * @adapter: board private structure
325 e1000_irq_disable(struct e1000_adapter *adapter)
327 atomic_inc(&adapter->irq_sem);
328 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
329 E1000_WRITE_FLUSH(&adapter->hw);
330 synchronize_irq(adapter->pdev->irq);
334 * e1000_irq_enable - Enable default interrupt generation settings
335 * @adapter: board private structure
339 e1000_irq_enable(struct e1000_adapter *adapter)
341 if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
342 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
343 E1000_WRITE_FLUSH(&adapter->hw);
348 e1000_update_mng_vlan(struct e1000_adapter *adapter)
350 struct net_device *netdev = adapter->netdev;
351 uint16_t vid = adapter->hw.mng_cookie.vlan_id;
352 uint16_t old_vid = adapter->mng_vlan_id;
353 if (adapter->vlgrp) {
354 if (!adapter->vlgrp->vlan_devices[vid]) {
355 if (adapter->hw.mng_cookie.status &
356 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
357 e1000_vlan_rx_add_vid(netdev, vid);
358 adapter->mng_vlan_id = vid;
360 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
362 if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
364 !adapter->vlgrp->vlan_devices[old_vid])
365 e1000_vlan_rx_kill_vid(netdev, old_vid);
367 adapter->mng_vlan_id = vid;
372 * e1000_release_hw_control - release control of the h/w to f/w
373 * @adapter: address of board private structure
375 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
376 * For ASF and Pass Through versions of f/w this means that the
377 * driver is no longer loaded. For AMT version (only with 82573) i
378 * of the f/w this means that the network i/f is closed.
383 e1000_release_hw_control(struct e1000_adapter *adapter)
389 /* Let firmware taken over control of h/w */
390 switch (adapter->hw.mac_type) {
393 case e1000_80003es2lan:
394 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
395 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
396 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
399 swsm = E1000_READ_REG(&adapter->hw, SWSM);
400 E1000_WRITE_REG(&adapter->hw, SWSM,
401 swsm & ~E1000_SWSM_DRV_LOAD);
403 extcnf = E1000_READ_REG(&adapter->hw, CTRL_EXT);
404 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
405 extcnf & ~E1000_CTRL_EXT_DRV_LOAD);
413 * e1000_get_hw_control - get control of the h/w from f/w
414 * @adapter: address of board private structure
416 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
417 * For ASF and Pass Through versions of f/w this means that
418 * the driver is loaded. For AMT version (only with 82573)
419 * of the f/w this means that the network i/f is open.
424 e1000_get_hw_control(struct e1000_adapter *adapter)
430 /* Let firmware know the driver has taken over */
431 switch (adapter->hw.mac_type) {
434 case e1000_80003es2lan:
435 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
436 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
437 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
440 swsm = E1000_READ_REG(&adapter->hw, SWSM);
441 E1000_WRITE_REG(&adapter->hw, SWSM,
442 swsm | E1000_SWSM_DRV_LOAD);
445 extcnf = E1000_READ_REG(&adapter->hw, EXTCNF_CTRL);
446 E1000_WRITE_REG(&adapter->hw, EXTCNF_CTRL,
447 extcnf | E1000_EXTCNF_CTRL_SWFLAG);
455 e1000_up(struct e1000_adapter *adapter)
457 struct net_device *netdev = adapter->netdev;
460 /* hardware has been reset, we need to reload some things */
462 e1000_set_multi(netdev);
464 e1000_restore_vlan(adapter);
466 e1000_configure_tx(adapter);
467 e1000_setup_rctl(adapter);
468 e1000_configure_rx(adapter);
469 /* call E1000_DESC_UNUSED which always leaves
470 * at least 1 descriptor unused to make sure
471 * next_to_use != next_to_clean */
472 for (i = 0; i < adapter->num_rx_queues; i++) {
473 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
474 adapter->alloc_rx_buf(adapter, ring,
475 E1000_DESC_UNUSED(ring));
478 adapter->tx_queue_len = netdev->tx_queue_len;
480 #ifdef CONFIG_E1000_NAPI
481 netif_poll_enable(netdev);
483 e1000_irq_enable(adapter);
485 clear_bit(__E1000_DOWN, &adapter->flags);
487 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
492 * e1000_power_up_phy - restore link in case the phy was powered down
493 * @adapter: address of board private structure
495 * The phy may be powered down to save power and turn off link when the
496 * driver is unloaded and wake on lan is not enabled (among others)
497 * *** this routine MUST be followed by a call to e1000_reset ***
501 void e1000_power_up_phy(struct e1000_adapter *adapter)
503 uint16_t mii_reg = 0;
505 /* Just clear the power down bit to wake the phy back up */
506 if (adapter->hw.media_type == e1000_media_type_copper) {
507 /* according to the manual, the phy will retain its
508 * settings across a power-down/up cycle */
509 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
510 mii_reg &= ~MII_CR_POWER_DOWN;
511 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
515 static void e1000_power_down_phy(struct e1000_adapter *adapter)
517 /* Power down the PHY so no link is implied when interface is down *
518 * The PHY cannot be powered down if any of the following is TRUE *
521 * (c) SoL/IDER session is active */
522 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&
523 adapter->hw.media_type == e1000_media_type_copper) {
524 uint16_t mii_reg = 0;
526 switch (adapter->hw.mac_type) {
529 case e1000_82545_rev_3:
531 case e1000_82546_rev_3:
533 case e1000_82541_rev_2:
535 case e1000_82547_rev_2:
536 if (E1000_READ_REG(&adapter->hw, MANC) &
543 case e1000_80003es2lan:
545 if (e1000_check_mng_mode(&adapter->hw) ||
546 e1000_check_phy_reset_block(&adapter->hw))
552 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
553 mii_reg |= MII_CR_POWER_DOWN;
554 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
562 e1000_down(struct e1000_adapter *adapter)
564 struct net_device *netdev = adapter->netdev;
566 /* signal that we're down so the interrupt handler does not
567 * reschedule our watchdog timer */
568 set_bit(__E1000_DOWN, &adapter->flags);
570 e1000_irq_disable(adapter);
572 del_timer_sync(&adapter->tx_fifo_stall_timer);
573 del_timer_sync(&adapter->watchdog_timer);
574 del_timer_sync(&adapter->phy_info_timer);
576 #ifdef CONFIG_E1000_NAPI
577 netif_poll_disable(netdev);
579 netdev->tx_queue_len = adapter->tx_queue_len;
580 adapter->link_speed = 0;
581 adapter->link_duplex = 0;
582 netif_carrier_off(netdev);
583 netif_stop_queue(netdev);
585 e1000_reset(adapter);
586 e1000_clean_all_tx_rings(adapter);
587 e1000_clean_all_rx_rings(adapter);
591 e1000_reinit_locked(struct e1000_adapter *adapter)
593 WARN_ON(in_interrupt());
594 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
598 clear_bit(__E1000_RESETTING, &adapter->flags);
602 e1000_reset(struct e1000_adapter *adapter)
605 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
607 /* Repartition Pba for greater than 9k mtu
608 * To take effect CTRL.RST is required.
611 switch (adapter->hw.mac_type) {
613 case e1000_82547_rev_2:
618 case e1000_80003es2lan:
632 if ((adapter->hw.mac_type != e1000_82573) &&
633 (adapter->netdev->mtu > E1000_RXBUFFER_8192))
634 pba -= 8; /* allocate more FIFO for Tx */
637 if (adapter->hw.mac_type == e1000_82547) {
638 adapter->tx_fifo_head = 0;
639 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
640 adapter->tx_fifo_size =
641 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
642 atomic_set(&adapter->tx_fifo_stall, 0);
645 E1000_WRITE_REG(&adapter->hw, PBA, pba);
647 /* flow control settings */
648 /* Set the FC high water mark to 90% of the FIFO size.
649 * Required to clear last 3 LSB */
650 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
651 /* We can't use 90% on small FIFOs because the remainder
652 * would be less than 1 full frame. In this case, we size
653 * it to allow at least a full frame above the high water
655 if (pba < E1000_PBA_16K)
656 fc_high_water_mark = (pba * 1024) - 1600;
658 adapter->hw.fc_high_water = fc_high_water_mark;
659 adapter->hw.fc_low_water = fc_high_water_mark - 8;
660 if (adapter->hw.mac_type == e1000_80003es2lan)
661 adapter->hw.fc_pause_time = 0xFFFF;
663 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
664 adapter->hw.fc_send_xon = 1;
665 adapter->hw.fc = adapter->hw.original_fc;
667 /* Allow time for pending master requests to run */
668 e1000_reset_hw(&adapter->hw);
669 if (adapter->hw.mac_type >= e1000_82544)
670 E1000_WRITE_REG(&adapter->hw, WUC, 0);
672 if (e1000_init_hw(&adapter->hw))
673 DPRINTK(PROBE, ERR, "Hardware Error\n");
674 e1000_update_mng_vlan(adapter);
675 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
676 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
678 e1000_reset_adaptive(&adapter->hw);
679 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
681 if (!adapter->smart_power_down &&
682 (adapter->hw.mac_type == e1000_82571 ||
683 adapter->hw.mac_type == e1000_82572)) {
684 uint16_t phy_data = 0;
685 /* speed up time to link by disabling smart power down, ignore
686 * the return value of this function because there is nothing
687 * different we would do if it failed */
688 e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
690 phy_data &= ~IGP02E1000_PM_SPD;
691 e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
695 if ((adapter->en_mng_pt) &&
696 (adapter->hw.mac_type >= e1000_82540) &&
697 (adapter->hw.mac_type < e1000_82571) &&
698 (adapter->hw.media_type == e1000_media_type_copper)) {
699 manc = E1000_READ_REG(&adapter->hw, MANC);
700 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
701 E1000_WRITE_REG(&adapter->hw, MANC, manc);
706 * e1000_probe - Device Initialization Routine
707 * @pdev: PCI device information struct
708 * @ent: entry in e1000_pci_tbl
710 * Returns 0 on success, negative on failure
712 * e1000_probe initializes an adapter identified by a pci_dev structure.
713 * The OS initialization, configuring of the adapter private structure,
714 * and a hardware reset occur.
718 e1000_probe(struct pci_dev *pdev,
719 const struct pci_device_id *ent)
721 struct net_device *netdev;
722 struct e1000_adapter *adapter;
723 unsigned long mmio_start, mmio_len;
724 unsigned long flash_start, flash_len;
726 static int cards_found = 0;
727 static int global_quad_port_a = 0; /* global ksp3 port a indication */
728 int i, err, pci_using_dac;
729 uint16_t eeprom_data = 0;
730 uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
731 if ((err = pci_enable_device(pdev)))
734 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
735 !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
738 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) &&
739 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
740 E1000_ERR("No usable DMA configuration, aborting\n");
746 if ((err = pci_request_regions(pdev, e1000_driver_name)))
749 pci_set_master(pdev);
752 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
754 goto err_alloc_etherdev;
756 SET_MODULE_OWNER(netdev);
757 SET_NETDEV_DEV(netdev, &pdev->dev);
759 pci_set_drvdata(pdev, netdev);
760 adapter = netdev_priv(netdev);
761 adapter->netdev = netdev;
762 adapter->pdev = pdev;
763 adapter->hw.back = adapter;
764 adapter->msg_enable = (1 << debug) - 1;
766 mmio_start = pci_resource_start(pdev, BAR_0);
767 mmio_len = pci_resource_len(pdev, BAR_0);
770 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
771 if (!adapter->hw.hw_addr)
774 for (i = BAR_1; i <= BAR_5; i++) {
775 if (pci_resource_len(pdev, i) == 0)
777 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
778 adapter->hw.io_base = pci_resource_start(pdev, i);
783 netdev->open = &e1000_open;
784 netdev->stop = &e1000_close;
785 netdev->hard_start_xmit = &e1000_xmit_frame;
786 netdev->get_stats = &e1000_get_stats;
787 netdev->set_multicast_list = &e1000_set_multi;
788 netdev->set_mac_address = &e1000_set_mac;
789 netdev->change_mtu = &e1000_change_mtu;
790 netdev->do_ioctl = &e1000_ioctl;
791 e1000_set_ethtool_ops(netdev);
792 netdev->tx_timeout = &e1000_tx_timeout;
793 netdev->watchdog_timeo = 5 * HZ;
794 #ifdef CONFIG_E1000_NAPI
795 netdev->poll = &e1000_clean;
798 netdev->vlan_rx_register = e1000_vlan_rx_register;
799 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
800 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
801 #ifdef CONFIG_NET_POLL_CONTROLLER
802 netdev->poll_controller = e1000_netpoll;
804 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
806 netdev->mem_start = mmio_start;
807 netdev->mem_end = mmio_start + mmio_len;
808 netdev->base_addr = adapter->hw.io_base;
810 adapter->bd_number = cards_found;
812 /* setup the private structure */
814 if ((err = e1000_sw_init(adapter)))
818 /* Flash BAR mapping must happen after e1000_sw_init
819 * because it depends on mac_type */
820 if ((adapter->hw.mac_type == e1000_ich8lan) &&
821 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
822 flash_start = pci_resource_start(pdev, 1);
823 flash_len = pci_resource_len(pdev, 1);
824 adapter->hw.flash_address = ioremap(flash_start, flash_len);
825 if (!adapter->hw.flash_address)
829 if (e1000_check_phy_reset_block(&adapter->hw))
830 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
832 if (adapter->hw.mac_type >= e1000_82543) {
833 netdev->features = NETIF_F_SG |
837 NETIF_F_HW_VLAN_FILTER;
838 if (adapter->hw.mac_type == e1000_ich8lan)
839 netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
843 if ((adapter->hw.mac_type >= e1000_82544) &&
844 (adapter->hw.mac_type != e1000_82547))
845 netdev->features |= NETIF_F_TSO;
848 if (adapter->hw.mac_type > e1000_82547_rev_2)
849 netdev->features |= NETIF_F_TSO6;
853 netdev->features |= NETIF_F_HIGHDMA;
855 netdev->features |= NETIF_F_LLTX;
857 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
859 /* initialize eeprom parameters */
861 if (e1000_init_eeprom_params(&adapter->hw)) {
862 E1000_ERR("EEPROM initialization failed\n");
866 /* before reading the EEPROM, reset the controller to
867 * put the device in a known good starting state */
869 e1000_reset_hw(&adapter->hw);
871 /* make sure the EEPROM is good */
873 if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
874 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
878 /* copy the MAC address out of the EEPROM */
880 if (e1000_read_mac_addr(&adapter->hw))
881 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
882 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
883 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
885 if (!is_valid_ether_addr(netdev->perm_addr)) {
886 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
890 e1000_get_bus_info(&adapter->hw);
892 init_timer(&adapter->tx_fifo_stall_timer);
893 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
894 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
896 init_timer(&adapter->watchdog_timer);
897 adapter->watchdog_timer.function = &e1000_watchdog;
898 adapter->watchdog_timer.data = (unsigned long) adapter;
900 init_timer(&adapter->phy_info_timer);
901 adapter->phy_info_timer.function = &e1000_update_phy_info;
902 adapter->phy_info_timer.data = (unsigned long) adapter;
904 INIT_WORK(&adapter->reset_task,
905 (void (*)(void *))e1000_reset_task, netdev);
907 e1000_check_options(adapter);
909 /* Initial Wake on LAN setting
910 * If APM wake is enabled in the EEPROM,
911 * enable the ACPI Magic Packet filter
914 switch (adapter->hw.mac_type) {
915 case e1000_82542_rev2_0:
916 case e1000_82542_rev2_1:
920 e1000_read_eeprom(&adapter->hw,
921 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
922 eeprom_apme_mask = E1000_EEPROM_82544_APM;
925 e1000_read_eeprom(&adapter->hw,
926 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
927 eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
930 case e1000_82546_rev_3:
932 case e1000_80003es2lan:
933 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){
934 e1000_read_eeprom(&adapter->hw,
935 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
940 e1000_read_eeprom(&adapter->hw,
941 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
944 if (eeprom_data & eeprom_apme_mask)
945 adapter->eeprom_wol |= E1000_WUFC_MAG;
947 /* now that we have the eeprom settings, apply the special cases
948 * where the eeprom may be wrong or the board simply won't support
949 * wake on lan on a particular port */
950 switch (pdev->device) {
951 case E1000_DEV_ID_82546GB_PCIE:
952 adapter->eeprom_wol = 0;
954 case E1000_DEV_ID_82546EB_FIBER:
955 case E1000_DEV_ID_82546GB_FIBER:
956 case E1000_DEV_ID_82571EB_FIBER:
957 /* Wake events only supported on port A for dual fiber
958 * regardless of eeprom setting */
959 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
960 adapter->eeprom_wol = 0;
962 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
963 case E1000_DEV_ID_82571EB_QUAD_COPPER:
964 /* if quad port adapter, disable WoL on all but port A */
965 if (global_quad_port_a != 0)
966 adapter->eeprom_wol = 0;
968 adapter->quad_port_a = 1;
969 /* Reset for multiple quad port adapters */
970 if (++global_quad_port_a == 4)
971 global_quad_port_a = 0;
975 /* initialize the wol settings based on the eeprom settings */
976 adapter->wol = adapter->eeprom_wol;
978 /* print bus type/speed/width info */
980 struct e1000_hw *hw = &adapter->hw;
981 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
982 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
983 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
984 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
985 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
986 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
987 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
988 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
989 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
990 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
991 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
995 for (i = 0; i < 6; i++)
996 printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');
998 /* reset the hardware with the new settings */
999 e1000_reset(adapter);
1001 /* If the controller is 82573 and f/w is AMT, do not set
1002 * DRV_LOAD until the interface is up. For all other cases,
1003 * let the f/w know that the h/w is now under the control
1005 if (adapter->hw.mac_type != e1000_82573 ||
1006 !e1000_check_mng_mode(&adapter->hw))
1007 e1000_get_hw_control(adapter);
1009 strcpy(netdev->name, "eth%d");
1010 if ((err = register_netdev(netdev)))
1013 /* tell the stack to leave us alone until e1000_open() is called */
1014 netif_carrier_off(netdev);
1015 netif_stop_queue(netdev);
1017 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
1023 e1000_release_hw_control(adapter);
1025 if (!e1000_check_phy_reset_block(&adapter->hw))
1026 e1000_phy_hw_reset(&adapter->hw);
1028 if (adapter->hw.flash_address)
1029 iounmap(adapter->hw.flash_address);
1031 #ifdef CONFIG_E1000_NAPI
1032 for (i = 0; i < adapter->num_rx_queues; i++)
1033 dev_put(&adapter->polling_netdev[i]);
1036 kfree(adapter->tx_ring);
1037 kfree(adapter->rx_ring);
1038 #ifdef CONFIG_E1000_NAPI
1039 kfree(adapter->polling_netdev);
1042 iounmap(adapter->hw.hw_addr);
1044 free_netdev(netdev);
1046 pci_release_regions(pdev);
1049 pci_disable_device(pdev);
1054 * e1000_remove - Device Removal Routine
1055 * @pdev: PCI device information struct
1057 * e1000_remove is called by the PCI subsystem to alert the driver
1058 * that it should release a PCI device. The could be caused by a
1059 * Hot-Plug event, or because the driver is going to be removed from
1063 static void __devexit
1064 e1000_remove(struct pci_dev *pdev)
1066 struct net_device *netdev = pci_get_drvdata(pdev);
1067 struct e1000_adapter *adapter = netdev_priv(netdev);
1069 #ifdef CONFIG_E1000_NAPI
1073 flush_scheduled_work();
1075 if (adapter->hw.mac_type >= e1000_82540 &&
1076 adapter->hw.mac_type < e1000_82571 &&
1077 adapter->hw.media_type == e1000_media_type_copper) {
1078 manc = E1000_READ_REG(&adapter->hw, MANC);
1079 if (manc & E1000_MANC_SMBUS_EN) {
1080 manc |= E1000_MANC_ARP_EN;
1081 E1000_WRITE_REG(&adapter->hw, MANC, manc);
1085 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1086 * would have already happened in close and is redundant. */
1087 e1000_release_hw_control(adapter);
1089 unregister_netdev(netdev);
1090 #ifdef CONFIG_E1000_NAPI
1091 for (i = 0; i < adapter->num_rx_queues; i++)
1092 dev_put(&adapter->polling_netdev[i]);
1095 if (!e1000_check_phy_reset_block(&adapter->hw))
1096 e1000_phy_hw_reset(&adapter->hw);
1098 kfree(adapter->tx_ring);
1099 kfree(adapter->rx_ring);
1100 #ifdef CONFIG_E1000_NAPI
1101 kfree(adapter->polling_netdev);
1104 iounmap(adapter->hw.hw_addr);
1105 if (adapter->hw.flash_address)
1106 iounmap(adapter->hw.flash_address);
1107 pci_release_regions(pdev);
1109 free_netdev(netdev);
1111 pci_disable_device(pdev);
1115 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1116 * @adapter: board private structure to initialize
1118 * e1000_sw_init initializes the Adapter private data structure.
1119 * Fields are initialized based on PCI device information and
1120 * OS network device settings (MTU size).
1123 static int __devinit
1124 e1000_sw_init(struct e1000_adapter *adapter)
1126 struct e1000_hw *hw = &adapter->hw;
1127 struct net_device *netdev = adapter->netdev;
1128 struct pci_dev *pdev = adapter->pdev;
1129 #ifdef CONFIG_E1000_NAPI
1133 /* PCI config space info */
1135 hw->vendor_id = pdev->vendor;
1136 hw->device_id = pdev->device;
1137 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1138 hw->subsystem_id = pdev->subsystem_device;
1140 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
1142 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1144 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1145 adapter->rx_ps_bsize0 = E1000_RXBUFFER_128;
1146 hw->max_frame_size = netdev->mtu +
1147 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1148 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1150 /* identify the MAC */
1152 if (e1000_set_mac_type(hw)) {
1153 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1157 switch (hw->mac_type) {
1162 case e1000_82541_rev_2:
1163 case e1000_82547_rev_2:
1164 hw->phy_init_script = 1;
1168 e1000_set_media_type(hw);
1170 hw->wait_autoneg_complete = FALSE;
1171 hw->tbi_compatibility_en = TRUE;
1172 hw->adaptive_ifs = TRUE;
1174 /* Copper options */
1176 if (hw->media_type == e1000_media_type_copper) {
1177 hw->mdix = AUTO_ALL_MODES;
1178 hw->disable_polarity_correction = FALSE;
1179 hw->master_slave = E1000_MASTER_SLAVE;
1182 adapter->num_tx_queues = 1;
1183 adapter->num_rx_queues = 1;
1185 if (e1000_alloc_queues(adapter)) {
1186 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1190 #ifdef CONFIG_E1000_NAPI
1191 for (i = 0; i < adapter->num_rx_queues; i++) {
1192 adapter->polling_netdev[i].priv = adapter;
1193 adapter->polling_netdev[i].poll = &e1000_clean;
1194 adapter->polling_netdev[i].weight = 64;
1195 dev_hold(&adapter->polling_netdev[i]);
1196 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
1198 spin_lock_init(&adapter->tx_queue_lock);
1201 atomic_set(&adapter->irq_sem, 1);
1202 spin_lock_init(&adapter->stats_lock);
1204 set_bit(__E1000_DOWN, &adapter->flags);
1210 * e1000_alloc_queues - Allocate memory for all rings
1211 * @adapter: board private structure to initialize
1213 * We allocate one ring per queue at run-time since we don't know the
1214 * number of queues at compile-time. The polling_netdev array is
1215 * intended for Multiqueue, but should work fine with a single queue.
1218 static int __devinit
1219 e1000_alloc_queues(struct e1000_adapter *adapter)
1223 size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues;
1224 adapter->tx_ring = kmalloc(size, GFP_KERNEL);
1225 if (!adapter->tx_ring)
1227 memset(adapter->tx_ring, 0, size);
1229 size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues;
1230 adapter->rx_ring = kmalloc(size, GFP_KERNEL);
1231 if (!adapter->rx_ring) {
1232 kfree(adapter->tx_ring);
1235 memset(adapter->rx_ring, 0, size);
1237 #ifdef CONFIG_E1000_NAPI
1238 size = sizeof(struct net_device) * adapter->num_rx_queues;
1239 adapter->polling_netdev = kmalloc(size, GFP_KERNEL);
1240 if (!adapter->polling_netdev) {
1241 kfree(adapter->tx_ring);
1242 kfree(adapter->rx_ring);
1245 memset(adapter->polling_netdev, 0, size);
1248 return E1000_SUCCESS;
1252 * e1000_open - Called when a network interface is made active
1253 * @netdev: network interface device structure
1255 * Returns 0 on success, negative value on failure
1257 * The open entry point is called when a network interface is made
1258 * active by the system (IFF_UP). At this point all resources needed
1259 * for transmit and receive operations are allocated, the interrupt
1260 * handler is registered with the OS, the watchdog timer is started,
1261 * and the stack is notified that the interface is ready.
1265 e1000_open(struct net_device *netdev)
1267 struct e1000_adapter *adapter = netdev_priv(netdev);
1270 /* disallow open during test */
1271 if (test_bit(__E1000_TESTING, &adapter->flags))
1274 /* allocate transmit descriptors */
1275 if ((err = e1000_setup_all_tx_resources(adapter)))
1278 /* allocate receive descriptors */
1279 if ((err = e1000_setup_all_rx_resources(adapter)))
1282 err = e1000_request_irq(adapter);
1286 e1000_power_up_phy(adapter);
1288 if ((err = e1000_up(adapter)))
1290 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1291 if ((adapter->hw.mng_cookie.status &
1292 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1293 e1000_update_mng_vlan(adapter);
1296 /* If AMT is enabled, let the firmware know that the network
1297 * interface is now open */
1298 if (adapter->hw.mac_type == e1000_82573 &&
1299 e1000_check_mng_mode(&adapter->hw))
1300 e1000_get_hw_control(adapter);
1302 return E1000_SUCCESS;
1305 e1000_power_down_phy(adapter);
1306 e1000_free_irq(adapter);
1308 e1000_free_all_rx_resources(adapter);
1310 e1000_free_all_tx_resources(adapter);
1312 e1000_reset(adapter);
1318 * e1000_close - Disables a network interface
1319 * @netdev: network interface device structure
1321 * Returns 0, this is not allowed to fail
1323 * The close entry point is called when an interface is de-activated
1324 * by the OS. The hardware is still under the drivers control, but
1325 * needs to be disabled. A global MAC reset is issued to stop the
1326 * hardware, and all transmit and receive resources are freed.
1330 e1000_close(struct net_device *netdev)
1332 struct e1000_adapter *adapter = netdev_priv(netdev);
1334 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1335 e1000_down(adapter);
1336 e1000_power_down_phy(adapter);
1337 e1000_free_irq(adapter);
1339 e1000_free_all_tx_resources(adapter);
1340 e1000_free_all_rx_resources(adapter);
1342 /* kill manageability vlan ID if supported, but not if a vlan with
1343 * the same ID is registered on the host OS (let 8021q kill it) */
1344 if ((adapter->hw.mng_cookie.status &
1345 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1347 adapter->vlgrp->vlan_devices[adapter->mng_vlan_id])) {
1348 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1351 /* If AMT is enabled, let the firmware know that the network
1352 * interface is now closed */
1353 if (adapter->hw.mac_type == e1000_82573 &&
1354 e1000_check_mng_mode(&adapter->hw))
1355 e1000_release_hw_control(adapter);
1361 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1362 * @adapter: address of board private structure
1363 * @start: address of beginning of memory
1364 * @len: length of memory
1367 e1000_check_64k_bound(struct e1000_adapter *adapter,
1368 void *start, unsigned long len)
1370 unsigned long begin = (unsigned long) start;
1371 unsigned long end = begin + len;
1373 /* First rev 82545 and 82546 need to not allow any memory
1374 * write location to cross 64k boundary due to errata 23 */
1375 if (adapter->hw.mac_type == e1000_82545 ||
1376 adapter->hw.mac_type == e1000_82546) {
1377 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
1384 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1385 * @adapter: board private structure
1386 * @txdr: tx descriptor ring (for a specific queue) to setup
1388 * Return 0 on success, negative on failure
1392 e1000_setup_tx_resources(struct e1000_adapter *adapter,
1393 struct e1000_tx_ring *txdr)
1395 struct pci_dev *pdev = adapter->pdev;
1398 size = sizeof(struct e1000_buffer) * txdr->count;
1399 txdr->buffer_info = vmalloc(size);
1400 if (!txdr->buffer_info) {
1402 "Unable to allocate memory for the transmit descriptor ring\n");
1405 memset(txdr->buffer_info, 0, size);
1407 /* round up to nearest 4K */
1409 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1410 E1000_ROUNDUP(txdr->size, 4096);
1412 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1415 vfree(txdr->buffer_info);
1417 "Unable to allocate memory for the transmit descriptor ring\n");
1421 /* Fix for errata 23, can't cross 64kB boundary */
1422 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1423 void *olddesc = txdr->desc;
1424 dma_addr_t olddma = txdr->dma;
1425 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1426 "at %p\n", txdr->size, txdr->desc);
1427 /* Try again, without freeing the previous */
1428 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1429 /* Failed allocation, critical failure */
1431 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1432 goto setup_tx_desc_die;
1435 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1437 pci_free_consistent(pdev, txdr->size, txdr->desc,
1439 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1441 "Unable to allocate aligned memory "
1442 "for the transmit descriptor ring\n");
1443 vfree(txdr->buffer_info);
1446 /* Free old allocation, new allocation was successful */
1447 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1450 memset(txdr->desc, 0, txdr->size);
1452 txdr->next_to_use = 0;
1453 txdr->next_to_clean = 0;
1454 spin_lock_init(&txdr->tx_lock);
1460 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1461 * (Descriptors) for all queues
1462 * @adapter: board private structure
1464 * Return 0 on success, negative on failure
1468 e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1472 for (i = 0; i < adapter->num_tx_queues; i++) {
1473 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1476 "Allocation for Tx Queue %u failed\n", i);
1477 for (i-- ; i >= 0; i--)
1478 e1000_free_tx_resources(adapter,
1479 &adapter->tx_ring[i]);
1488 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1489 * @adapter: board private structure
1491 * Configure the Tx unit of the MAC after a reset.
1495 e1000_configure_tx(struct e1000_adapter *adapter)
1498 struct e1000_hw *hw = &adapter->hw;
1499 uint32_t tdlen, tctl, tipg, tarc;
1500 uint32_t ipgr1, ipgr2;
1502 /* Setup the HW Tx Head and Tail descriptor pointers */
1504 switch (adapter->num_tx_queues) {
1507 tdba = adapter->tx_ring[0].dma;
1508 tdlen = adapter->tx_ring[0].count *
1509 sizeof(struct e1000_tx_desc);
1510 E1000_WRITE_REG(hw, TDLEN, tdlen);
1511 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32));
1512 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
1513 E1000_WRITE_REG(hw, TDT, 0);
1514 E1000_WRITE_REG(hw, TDH, 0);
1515 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
1516 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
1520 /* Set the default values for the Tx Inter Packet Gap timer */
1522 if (hw->media_type == e1000_media_type_fiber ||
1523 hw->media_type == e1000_media_type_internal_serdes)
1524 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1526 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1528 switch (hw->mac_type) {
1529 case e1000_82542_rev2_0:
1530 case e1000_82542_rev2_1:
1531 tipg = DEFAULT_82542_TIPG_IPGT;
1532 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1533 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1535 case e1000_80003es2lan:
1536 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1537 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
1540 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1541 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1544 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1545 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1546 E1000_WRITE_REG(hw, TIPG, tipg);
1548 /* Set the Tx Interrupt Delay register */
1550 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
1551 if (hw->mac_type >= e1000_82540)
1552 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay);
1554 /* Program the Transmit Control Register */
1556 tctl = E1000_READ_REG(hw, TCTL);
1557 tctl &= ~E1000_TCTL_CT;
1558 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1559 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1561 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1562 tarc = E1000_READ_REG(hw, TARC0);
1563 /* set the speed mode bit, we'll clear it if we're not at
1564 * gigabit link later */
1566 E1000_WRITE_REG(hw, TARC0, tarc);
1567 } else if (hw->mac_type == e1000_80003es2lan) {
1568 tarc = E1000_READ_REG(hw, TARC0);
1570 E1000_WRITE_REG(hw, TARC0, tarc);
1571 tarc = E1000_READ_REG(hw, TARC1);
1573 E1000_WRITE_REG(hw, TARC1, tarc);
1576 e1000_config_collision_dist(hw);
1578 /* Setup Transmit Descriptor Settings for eop descriptor */
1579 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
1582 if (hw->mac_type < e1000_82543)
1583 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1585 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1587 /* Cache if we're 82544 running in PCI-X because we'll
1588 * need this to apply a workaround later in the send path. */
1589 if (hw->mac_type == e1000_82544 &&
1590 hw->bus_type == e1000_bus_type_pcix)
1591 adapter->pcix_82544 = 1;
1593 E1000_WRITE_REG(hw, TCTL, tctl);
1598 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1599 * @adapter: board private structure
1600 * @rxdr: rx descriptor ring (for a specific queue) to setup
1602 * Returns 0 on success, negative on failure
1606 e1000_setup_rx_resources(struct e1000_adapter *adapter,
1607 struct e1000_rx_ring *rxdr)
1609 struct pci_dev *pdev = adapter->pdev;
1612 size = sizeof(struct e1000_buffer) * rxdr->count;
1613 rxdr->buffer_info = vmalloc(size);
1614 if (!rxdr->buffer_info) {
1616 "Unable to allocate memory for the receive descriptor ring\n");
1619 memset(rxdr->buffer_info, 0, size);
1621 size = sizeof(struct e1000_ps_page) * rxdr->count;
1622 rxdr->ps_page = kmalloc(size, GFP_KERNEL);
1623 if (!rxdr->ps_page) {
1624 vfree(rxdr->buffer_info);
1626 "Unable to allocate memory for the receive descriptor ring\n");
1629 memset(rxdr->ps_page, 0, size);
1631 size = sizeof(struct e1000_ps_page_dma) * rxdr->count;
1632 rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL);
1633 if (!rxdr->ps_page_dma) {
1634 vfree(rxdr->buffer_info);
1635 kfree(rxdr->ps_page);
1637 "Unable to allocate memory for the receive descriptor ring\n");
1640 memset(rxdr->ps_page_dma, 0, size);
1642 if (adapter->hw.mac_type <= e1000_82547_rev_2)
1643 desc_len = sizeof(struct e1000_rx_desc);
1645 desc_len = sizeof(union e1000_rx_desc_packet_split);
1647 /* Round up to nearest 4K */
1649 rxdr->size = rxdr->count * desc_len;
1650 E1000_ROUNDUP(rxdr->size, 4096);
1652 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1656 "Unable to allocate memory for the receive descriptor ring\n");
1658 vfree(rxdr->buffer_info);
1659 kfree(rxdr->ps_page);
1660 kfree(rxdr->ps_page_dma);
1664 /* Fix for errata 23, can't cross 64kB boundary */
1665 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1666 void *olddesc = rxdr->desc;
1667 dma_addr_t olddma = rxdr->dma;
1668 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1669 "at %p\n", rxdr->size, rxdr->desc);
1670 /* Try again, without freeing the previous */
1671 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1672 /* Failed allocation, critical failure */
1674 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1676 "Unable to allocate memory "
1677 "for the receive descriptor ring\n");
1678 goto setup_rx_desc_die;
1681 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1683 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1685 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1687 "Unable to allocate aligned memory "
1688 "for the receive descriptor ring\n");
1689 goto setup_rx_desc_die;
1691 /* Free old allocation, new allocation was successful */
1692 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1695 memset(rxdr->desc, 0, rxdr->size);
1697 rxdr->next_to_clean = 0;
1698 rxdr->next_to_use = 0;
1704 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1705 * (Descriptors) for all queues
1706 * @adapter: board private structure
1708 * Return 0 on success, negative on failure
1712 e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1716 for (i = 0; i < adapter->num_rx_queues; i++) {
1717 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1720 "Allocation for Rx Queue %u failed\n", i);
1721 for (i-- ; i >= 0; i--)
1722 e1000_free_rx_resources(adapter,
1723 &adapter->rx_ring[i]);
1732 * e1000_setup_rctl - configure the receive control registers
1733 * @adapter: Board private structure
1735 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1736 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1738 e1000_setup_rctl(struct e1000_adapter *adapter)
1740 uint32_t rctl, rfctl;
1741 uint32_t psrctl = 0;
1742 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1746 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1748 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1750 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1751 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1752 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
1754 if (adapter->hw.tbi_compatibility_on == 1)
1755 rctl |= E1000_RCTL_SBP;
1757 rctl &= ~E1000_RCTL_SBP;
1759 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1760 rctl &= ~E1000_RCTL_LPE;
1762 rctl |= E1000_RCTL_LPE;
1764 /* Setup buffer sizes */
1765 rctl &= ~E1000_RCTL_SZ_4096;
1766 rctl |= E1000_RCTL_BSEX;
1767 switch (adapter->rx_buffer_len) {
1768 case E1000_RXBUFFER_256:
1769 rctl |= E1000_RCTL_SZ_256;
1770 rctl &= ~E1000_RCTL_BSEX;
1772 case E1000_RXBUFFER_512:
1773 rctl |= E1000_RCTL_SZ_512;
1774 rctl &= ~E1000_RCTL_BSEX;
1776 case E1000_RXBUFFER_1024:
1777 rctl |= E1000_RCTL_SZ_1024;
1778 rctl &= ~E1000_RCTL_BSEX;
1780 case E1000_RXBUFFER_2048:
1782 rctl |= E1000_RCTL_SZ_2048;
1783 rctl &= ~E1000_RCTL_BSEX;
1785 case E1000_RXBUFFER_4096:
1786 rctl |= E1000_RCTL_SZ_4096;
1788 case E1000_RXBUFFER_8192:
1789 rctl |= E1000_RCTL_SZ_8192;
1791 case E1000_RXBUFFER_16384:
1792 rctl |= E1000_RCTL_SZ_16384;
1796 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1797 /* 82571 and greater support packet-split where the protocol
1798 * header is placed in skb->data and the packet data is
1799 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1800 * In the case of a non-split, skb->data is linearly filled,
1801 * followed by the page buffers. Therefore, skb->data is
1802 * sized to hold the largest protocol header.
1804 /* allocations using alloc_page take too long for regular MTU
1805 * so only enable packet split for jumbo frames */
1806 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1807 if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) &&
1808 PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE))
1809 adapter->rx_ps_pages = pages;
1811 adapter->rx_ps_pages = 0;
1813 if (adapter->rx_ps_pages) {
1814 /* Configure extra packet-split registers */
1815 rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
1816 rfctl |= E1000_RFCTL_EXTEN;
1817 /* disable packet split support for IPv6 extension headers,
1818 * because some malformed IPv6 headers can hang the RX */
1819 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
1820 E1000_RFCTL_NEW_IPV6_EXT_DIS);
1822 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
1824 rctl |= E1000_RCTL_DTYP_PS;
1826 psrctl |= adapter->rx_ps_bsize0 >>
1827 E1000_PSRCTL_BSIZE0_SHIFT;
1829 switch (adapter->rx_ps_pages) {
1831 psrctl |= PAGE_SIZE <<
1832 E1000_PSRCTL_BSIZE3_SHIFT;
1834 psrctl |= PAGE_SIZE <<
1835 E1000_PSRCTL_BSIZE2_SHIFT;
1837 psrctl |= PAGE_SIZE >>
1838 E1000_PSRCTL_BSIZE1_SHIFT;
1842 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl);
1845 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1849 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1850 * @adapter: board private structure
1852 * Configure the Rx unit of the MAC after a reset.
1856 e1000_configure_rx(struct e1000_adapter *adapter)
1859 struct e1000_hw *hw = &adapter->hw;
1860 uint32_t rdlen, rctl, rxcsum, ctrl_ext;
1862 if (adapter->rx_ps_pages) {
1863 /* this is a 32 byte descriptor */
1864 rdlen = adapter->rx_ring[0].count *
1865 sizeof(union e1000_rx_desc_packet_split);
1866 adapter->clean_rx = e1000_clean_rx_irq_ps;
1867 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
1869 rdlen = adapter->rx_ring[0].count *
1870 sizeof(struct e1000_rx_desc);
1871 adapter->clean_rx = e1000_clean_rx_irq;
1872 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1875 /* disable receives while setting up the descriptors */
1876 rctl = E1000_READ_REG(hw, RCTL);
1877 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
1879 /* set the Receive Delay Timer Register */
1880 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
1882 if (hw->mac_type >= e1000_82540) {
1883 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay);
1884 if (adapter->itr > 1)
1885 E1000_WRITE_REG(hw, ITR,
1886 1000000000 / (adapter->itr * 256));
1889 if (hw->mac_type >= e1000_82571) {
1890 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1891 /* Reset delay timers after every interrupt */
1892 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
1893 #ifdef CONFIG_E1000_NAPI
1894 /* Auto-Mask interrupts upon ICR read. */
1895 ctrl_ext |= E1000_CTRL_EXT_IAME;
1897 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1898 E1000_WRITE_REG(hw, IAM, ~0);
1899 E1000_WRITE_FLUSH(hw);
1902 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1903 * the Base and Length of the Rx Descriptor Ring */
1904 switch (adapter->num_rx_queues) {
1907 rdba = adapter->rx_ring[0].dma;
1908 E1000_WRITE_REG(hw, RDLEN, rdlen);
1909 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32));
1910 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1911 E1000_WRITE_REG(hw, RDT, 0);
1912 E1000_WRITE_REG(hw, RDH, 0);
1913 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
1914 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
1918 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1919 if (hw->mac_type >= e1000_82543) {
1920 rxcsum = E1000_READ_REG(hw, RXCSUM);
1921 if (adapter->rx_csum == TRUE) {
1922 rxcsum |= E1000_RXCSUM_TUOFL;
1924 /* Enable 82571 IPv4 payload checksum for UDP fragments
1925 * Must be used in conjunction with packet-split. */
1926 if ((hw->mac_type >= e1000_82571) &&
1927 (adapter->rx_ps_pages)) {
1928 rxcsum |= E1000_RXCSUM_IPPCSE;
1931 rxcsum &= ~E1000_RXCSUM_TUOFL;
1932 /* don't need to clear IPPCSE as it defaults to 0 */
1934 E1000_WRITE_REG(hw, RXCSUM, rxcsum);
1937 /* Enable Receives */
1938 E1000_WRITE_REG(hw, RCTL, rctl);
1942 * e1000_free_tx_resources - Free Tx Resources per Queue
1943 * @adapter: board private structure
1944 * @tx_ring: Tx descriptor ring for a specific queue
1946 * Free all transmit software resources
1950 e1000_free_tx_resources(struct e1000_adapter *adapter,
1951 struct e1000_tx_ring *tx_ring)
1953 struct pci_dev *pdev = adapter->pdev;
1955 e1000_clean_tx_ring(adapter, tx_ring);
1957 vfree(tx_ring->buffer_info);
1958 tx_ring->buffer_info = NULL;
1960 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1962 tx_ring->desc = NULL;
1966 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1967 * @adapter: board private structure
1969 * Free all transmit software resources
1973 e1000_free_all_tx_resources(struct e1000_adapter *adapter)
1977 for (i = 0; i < adapter->num_tx_queues; i++)
1978 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1982 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1983 struct e1000_buffer *buffer_info)
1985 if (buffer_info->dma) {
1986 pci_unmap_page(adapter->pdev,
1988 buffer_info->length,
1991 if (buffer_info->skb)
1992 dev_kfree_skb_any(buffer_info->skb);
1993 memset(buffer_info, 0, sizeof(struct e1000_buffer));
1997 * e1000_clean_tx_ring - Free Tx Buffers
1998 * @adapter: board private structure
1999 * @tx_ring: ring to be cleaned
2003 e1000_clean_tx_ring(struct e1000_adapter *adapter,
2004 struct e1000_tx_ring *tx_ring)
2006 struct e1000_buffer *buffer_info;
2010 /* Free all the Tx ring sk_buffs */
2012 for (i = 0; i < tx_ring->count; i++) {
2013 buffer_info = &tx_ring->buffer_info[i];
2014 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
2017 size = sizeof(struct e1000_buffer) * tx_ring->count;
2018 memset(tx_ring->buffer_info, 0, size);
2020 /* Zero out the descriptor ring */
2022 memset(tx_ring->desc, 0, tx_ring->size);
2024 tx_ring->next_to_use = 0;
2025 tx_ring->next_to_clean = 0;
2026 tx_ring->last_tx_tso = 0;
2028 writel(0, adapter->hw.hw_addr + tx_ring->tdh);
2029 writel(0, adapter->hw.hw_addr + tx_ring->tdt);
2033 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2034 * @adapter: board private structure
2038 e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
2042 for (i = 0; i < adapter->num_tx_queues; i++)
2043 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
2047 * e1000_free_rx_resources - Free Rx Resources
2048 * @adapter: board private structure
2049 * @rx_ring: ring to clean the resources from
2051 * Free all receive software resources
2055 e1000_free_rx_resources(struct e1000_adapter *adapter,
2056 struct e1000_rx_ring *rx_ring)
2058 struct pci_dev *pdev = adapter->pdev;
2060 e1000_clean_rx_ring(adapter, rx_ring);
2062 vfree(rx_ring->buffer_info);
2063 rx_ring->buffer_info = NULL;
2064 kfree(rx_ring->ps_page);
2065 rx_ring->ps_page = NULL;
2066 kfree(rx_ring->ps_page_dma);
2067 rx_ring->ps_page_dma = NULL;
2069 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
2071 rx_ring->desc = NULL;
2075 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2076 * @adapter: board private structure
2078 * Free all receive software resources
2082 e1000_free_all_rx_resources(struct e1000_adapter *adapter)
2086 for (i = 0; i < adapter->num_rx_queues; i++)
2087 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
2091 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2092 * @adapter: board private structure
2093 * @rx_ring: ring to free buffers from
2097 e1000_clean_rx_ring(struct e1000_adapter *adapter,
2098 struct e1000_rx_ring *rx_ring)
2100 struct e1000_buffer *buffer_info;
2101 struct e1000_ps_page *ps_page;
2102 struct e1000_ps_page_dma *ps_page_dma;
2103 struct pci_dev *pdev = adapter->pdev;
2107 /* Free all the Rx ring sk_buffs */
2108 for (i = 0; i < rx_ring->count; i++) {
2109 buffer_info = &rx_ring->buffer_info[i];
2110 if (buffer_info->skb) {
2111 pci_unmap_single(pdev,
2113 buffer_info->length,
2114 PCI_DMA_FROMDEVICE);
2116 dev_kfree_skb(buffer_info->skb);
2117 buffer_info->skb = NULL;
2119 ps_page = &rx_ring->ps_page[i];
2120 ps_page_dma = &rx_ring->ps_page_dma[i];
2121 for (j = 0; j < adapter->rx_ps_pages; j++) {
2122 if (!ps_page->ps_page[j]) break;
2123 pci_unmap_page(pdev,
2124 ps_page_dma->ps_page_dma[j],
2125 PAGE_SIZE, PCI_DMA_FROMDEVICE);
2126 ps_page_dma->ps_page_dma[j] = 0;
2127 put_page(ps_page->ps_page[j]);
2128 ps_page->ps_page[j] = NULL;
2132 size = sizeof(struct e1000_buffer) * rx_ring->count;
2133 memset(rx_ring->buffer_info, 0, size);
2134 size = sizeof(struct e1000_ps_page) * rx_ring->count;
2135 memset(rx_ring->ps_page, 0, size);
2136 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count;
2137 memset(rx_ring->ps_page_dma, 0, size);
2139 /* Zero out the descriptor ring */
2141 memset(rx_ring->desc, 0, rx_ring->size);
2143 rx_ring->next_to_clean = 0;
2144 rx_ring->next_to_use = 0;
2146 writel(0, adapter->hw.hw_addr + rx_ring->rdh);
2147 writel(0, adapter->hw.hw_addr + rx_ring->rdt);
2151 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2152 * @adapter: board private structure
2156 e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2160 for (i = 0; i < adapter->num_rx_queues; i++)
2161 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2164 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2165 * and memory write and invalidate disabled for certain operations
2168 e1000_enter_82542_rst(struct e1000_adapter *adapter)
2170 struct net_device *netdev = adapter->netdev;
2173 e1000_pci_clear_mwi(&adapter->hw);
2175 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2176 rctl |= E1000_RCTL_RST;
2177 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2178 E1000_WRITE_FLUSH(&adapter->hw);
2181 if (netif_running(netdev))
2182 e1000_clean_all_rx_rings(adapter);
2186 e1000_leave_82542_rst(struct e1000_adapter *adapter)
2188 struct net_device *netdev = adapter->netdev;
2191 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2192 rctl &= ~E1000_RCTL_RST;
2193 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2194 E1000_WRITE_FLUSH(&adapter->hw);
2197 if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
2198 e1000_pci_set_mwi(&adapter->hw);
2200 if (netif_running(netdev)) {
2201 /* No need to loop, because 82542 supports only 1 queue */
2202 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2203 e1000_configure_rx(adapter);
2204 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2209 * e1000_set_mac - Change the Ethernet Address of the NIC
2210 * @netdev: network interface device structure
2211 * @p: pointer to an address structure
2213 * Returns 0 on success, negative on failure
2217 e1000_set_mac(struct net_device *netdev, void *p)
2219 struct e1000_adapter *adapter = netdev_priv(netdev);
2220 struct sockaddr *addr = p;
2222 if (!is_valid_ether_addr(addr->sa_data))
2223 return -EADDRNOTAVAIL;
2225 /* 82542 2.0 needs to be in reset to write receive address registers */
2227 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2228 e1000_enter_82542_rst(adapter);
2230 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2231 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
2233 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2235 /* With 82571 controllers, LAA may be overwritten (with the default)
2236 * due to controller reset from the other port. */
2237 if (adapter->hw.mac_type == e1000_82571) {
2238 /* activate the work around */
2239 adapter->hw.laa_is_present = 1;
2241 /* Hold a copy of the LAA in RAR[14] This is done so that
2242 * between the time RAR[0] gets clobbered and the time it
2243 * gets fixed (in e1000_watchdog), the actual LAA is in one
2244 * of the RARs and no incoming packets directed to this port
2245 * are dropped. Eventaully the LAA will be in RAR[0] and
2247 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
2248 E1000_RAR_ENTRIES - 1);
2251 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2252 e1000_leave_82542_rst(adapter);
2258 * e1000_set_multi - Multicast and Promiscuous mode set
2259 * @netdev: network interface device structure
2261 * The set_multi entry point is called whenever the multicast address
2262 * list or the network interface flags are updated. This routine is
2263 * responsible for configuring the hardware for proper multicast,
2264 * promiscuous mode, and all-multi behavior.
2268 e1000_set_multi(struct net_device *netdev)
2270 struct e1000_adapter *adapter = netdev_priv(netdev);
2271 struct e1000_hw *hw = &adapter->hw;
2272 struct dev_mc_list *mc_ptr;
2274 uint32_t hash_value;
2275 int i, rar_entries = E1000_RAR_ENTRIES;
2276 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
2277 E1000_NUM_MTA_REGISTERS_ICH8LAN :
2278 E1000_NUM_MTA_REGISTERS;
2280 if (adapter->hw.mac_type == e1000_ich8lan)
2281 rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
2283 /* reserve RAR[14] for LAA over-write work-around */
2284 if (adapter->hw.mac_type == e1000_82571)
2287 /* Check for Promiscuous and All Multicast modes */
2289 rctl = E1000_READ_REG(hw, RCTL);
2291 if (netdev->flags & IFF_PROMISC) {
2292 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2293 } else if (netdev->flags & IFF_ALLMULTI) {
2294 rctl |= E1000_RCTL_MPE;
2295 rctl &= ~E1000_RCTL_UPE;
2297 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2300 E1000_WRITE_REG(hw, RCTL, rctl);
2302 /* 82542 2.0 needs to be in reset to write receive address registers */
2304 if (hw->mac_type == e1000_82542_rev2_0)
2305 e1000_enter_82542_rst(adapter);
2307 /* load the first 14 multicast address into the exact filters 1-14
2308 * RAR 0 is used for the station MAC adddress
2309 * if there are not 14 addresses, go ahead and clear the filters
2310 * -- with 82571 controllers only 0-13 entries are filled here
2312 mc_ptr = netdev->mc_list;
2314 for (i = 1; i < rar_entries; i++) {
2316 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
2317 mc_ptr = mc_ptr->next;
2319 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2320 E1000_WRITE_FLUSH(hw);
2321 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2322 E1000_WRITE_FLUSH(hw);
2326 /* clear the old settings from the multicast hash table */
2328 for (i = 0; i < mta_reg_count; i++) {
2329 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
2330 E1000_WRITE_FLUSH(hw);
2333 /* load any remaining addresses into the hash table */
2335 for (; mc_ptr; mc_ptr = mc_ptr->next) {
2336 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
2337 e1000_mta_set(hw, hash_value);
2340 if (hw->mac_type == e1000_82542_rev2_0)
2341 e1000_leave_82542_rst(adapter);
2344 /* Need to wait a few seconds after link up to get diagnostic information from
2348 e1000_update_phy_info(unsigned long data)
2350 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2351 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
2355 * e1000_82547_tx_fifo_stall - Timer Call-back
2356 * @data: pointer to adapter cast into an unsigned long
2360 e1000_82547_tx_fifo_stall(unsigned long data)
2362 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2363 struct net_device *netdev = adapter->netdev;
2366 if (atomic_read(&adapter->tx_fifo_stall)) {
2367 if ((E1000_READ_REG(&adapter->hw, TDT) ==
2368 E1000_READ_REG(&adapter->hw, TDH)) &&
2369 (E1000_READ_REG(&adapter->hw, TDFT) ==
2370 E1000_READ_REG(&adapter->hw, TDFH)) &&
2371 (E1000_READ_REG(&adapter->hw, TDFTS) ==
2372 E1000_READ_REG(&adapter->hw, TDFHS))) {
2373 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2374 E1000_WRITE_REG(&adapter->hw, TCTL,
2375 tctl & ~E1000_TCTL_EN);
2376 E1000_WRITE_REG(&adapter->hw, TDFT,
2377 adapter->tx_head_addr);
2378 E1000_WRITE_REG(&adapter->hw, TDFH,
2379 adapter->tx_head_addr);
2380 E1000_WRITE_REG(&adapter->hw, TDFTS,
2381 adapter->tx_head_addr);
2382 E1000_WRITE_REG(&adapter->hw, TDFHS,
2383 adapter->tx_head_addr);
2384 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2385 E1000_WRITE_FLUSH(&adapter->hw);
2387 adapter->tx_fifo_head = 0;
2388 atomic_set(&adapter->tx_fifo_stall, 0);
2389 netif_wake_queue(netdev);
2391 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2397 * e1000_watchdog - Timer Call-back
2398 * @data: pointer to adapter cast into an unsigned long
2401 e1000_watchdog(unsigned long data)
2403 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2404 struct net_device *netdev = adapter->netdev;
2405 struct e1000_tx_ring *txdr = adapter->tx_ring;
2406 uint32_t link, tctl;
2409 ret_val = e1000_check_for_link(&adapter->hw);
2410 if ((ret_val == E1000_ERR_PHY) &&
2411 (adapter->hw.phy_type == e1000_phy_igp_3) &&
2412 (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
2413 /* See e1000_kumeran_lock_loss_workaround() */
2415 "Gigabit has been disabled, downgrading speed\n");
2418 if (adapter->hw.mac_type == e1000_82573) {
2419 e1000_enable_tx_pkt_filtering(&adapter->hw);
2420 if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)
2421 e1000_update_mng_vlan(adapter);
2424 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2425 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
2426 link = !adapter->hw.serdes_link_down;
2428 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
2431 if (!netif_carrier_ok(netdev)) {
2432 boolean_t txb2b = 1;
2433 e1000_get_speed_and_duplex(&adapter->hw,
2434 &adapter->link_speed,
2435 &adapter->link_duplex);
2437 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
2438 adapter->link_speed,
2439 adapter->link_duplex == FULL_DUPLEX ?
2440 "Full Duplex" : "Half Duplex");
2442 /* tweak tx_queue_len according to speed/duplex
2443 * and adjust the timeout factor */
2444 netdev->tx_queue_len = adapter->tx_queue_len;
2445 adapter->tx_timeout_factor = 1;
2446 switch (adapter->link_speed) {
2449 netdev->tx_queue_len = 10;
2450 adapter->tx_timeout_factor = 8;
2454 netdev->tx_queue_len = 100;
2455 /* maybe add some timeout factor ? */
2459 if ((adapter->hw.mac_type == e1000_82571 ||
2460 adapter->hw.mac_type == e1000_82572) &&
2463 tarc0 = E1000_READ_REG(&adapter->hw, TARC0);
2464 tarc0 &= ~(1 << 21);
2465 E1000_WRITE_REG(&adapter->hw, TARC0, tarc0);
2469 /* disable TSO for pcie and 10/100 speeds, to avoid
2470 * some hardware issues */
2471 if (!adapter->tso_force &&
2472 adapter->hw.bus_type == e1000_bus_type_pci_express){
2473 switch (adapter->link_speed) {
2477 "10/100 speed: disabling TSO\n");
2478 netdev->features &= ~NETIF_F_TSO;
2480 netdev->features &= ~NETIF_F_TSO6;
2484 netdev->features |= NETIF_F_TSO;
2486 netdev->features |= NETIF_F_TSO6;
2496 /* enable transmits in the hardware, need to do this
2497 * after setting TARC0 */
2498 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2499 tctl |= E1000_TCTL_EN;
2500 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2502 netif_carrier_on(netdev);
2503 netif_wake_queue(netdev);
2504 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2505 adapter->smartspeed = 0;
2508 if (netif_carrier_ok(netdev)) {
2509 adapter->link_speed = 0;
2510 adapter->link_duplex = 0;
2511 DPRINTK(LINK, INFO, "NIC Link is Down\n");
2512 netif_carrier_off(netdev);
2513 netif_stop_queue(netdev);
2514 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2516 /* 80003ES2LAN workaround--
2517 * For packet buffer work-around on link down event;
2518 * disable receives in the ISR and
2519 * reset device here in the watchdog
2521 if (adapter->hw.mac_type == e1000_80003es2lan)
2523 schedule_work(&adapter->reset_task);
2526 e1000_smartspeed(adapter);
2529 e1000_update_stats(adapter);
2531 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2532 adapter->tpt_old = adapter->stats.tpt;
2533 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
2534 adapter->colc_old = adapter->stats.colc;
2536 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2537 adapter->gorcl_old = adapter->stats.gorcl;
2538 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2539 adapter->gotcl_old = adapter->stats.gotcl;
2541 e1000_update_adaptive(&adapter->hw);
2543 if (!netif_carrier_ok(netdev)) {
2544 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2545 /* We've lost link, so the controller stops DMA,
2546 * but we've got queued Tx work that's never going
2547 * to get done, so reset controller to flush Tx.
2548 * (Do the reset outside of interrupt context). */
2549 adapter->tx_timeout_count++;
2550 schedule_work(&adapter->reset_task);
2554 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2555 if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
2556 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2557 * asymmetrical Tx or Rx gets ITR=8000; everyone
2558 * else is between 2000-8000. */
2559 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
2560 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
2561 adapter->gotcl - adapter->gorcl :
2562 adapter->gorcl - adapter->gotcl) / 10000;
2563 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
2564 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
2567 /* Cause software interrupt to ensure rx ring is cleaned */
2568 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
2570 /* Force detection of hung controller every watchdog period */
2571 adapter->detect_tx_hung = TRUE;
2573 /* With 82571 controllers, LAA may be overwritten due to controller
2574 * reset from the other port. Set the appropriate LAA in RAR[0] */
2575 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
2576 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2578 /* Reset the timer */
2579 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2582 #define E1000_TX_FLAGS_CSUM 0x00000001
2583 #define E1000_TX_FLAGS_VLAN 0x00000002
2584 #define E1000_TX_FLAGS_TSO 0x00000004
2585 #define E1000_TX_FLAGS_IPV4 0x00000008
2586 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2587 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2590 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2591 struct sk_buff *skb)
2594 struct e1000_context_desc *context_desc;
2595 struct e1000_buffer *buffer_info;
2597 uint32_t cmd_length = 0;
2598 uint16_t ipcse = 0, tucse, mss;
2599 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
2602 if (skb_is_gso(skb)) {
2603 if (skb_header_cloned(skb)) {
2604 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2609 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2610 mss = skb_shinfo(skb)->gso_size;
2611 if (skb->protocol == htons(ETH_P_IP)) {
2612 skb->nh.iph->tot_len = 0;
2613 skb->nh.iph->check = 0;
2615 ~csum_tcpudp_magic(skb->nh.iph->saddr,
2620 cmd_length = E1000_TXD_CMD_IP;
2621 ipcse = skb->h.raw - skb->data - 1;
2623 } else if (skb->protocol == htons(ETH_P_IPV6)) {
2624 skb->nh.ipv6h->payload_len = 0;
2626 ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
2627 &skb->nh.ipv6h->daddr,
2634 ipcss = skb->nh.raw - skb->data;
2635 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
2636 tucss = skb->h.raw - skb->data;
2637 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
2640 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2641 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2643 i = tx_ring->next_to_use;
2644 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2645 buffer_info = &tx_ring->buffer_info[i];
2647 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2648 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2649 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2650 context_desc->upper_setup.tcp_fields.tucss = tucss;
2651 context_desc->upper_setup.tcp_fields.tucso = tucso;
2652 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2653 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2654 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2655 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2657 buffer_info->time_stamp = jiffies;
2659 if (++i == tx_ring->count) i = 0;
2660 tx_ring->next_to_use = i;
2670 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2671 struct sk_buff *skb)
2673 struct e1000_context_desc *context_desc;
2674 struct e1000_buffer *buffer_info;
2678 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2679 css = skb->h.raw - skb->data;
2681 i = tx_ring->next_to_use;
2682 buffer_info = &tx_ring->buffer_info[i];
2683 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2685 context_desc->upper_setup.tcp_fields.tucss = css;
2686 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
2687 context_desc->upper_setup.tcp_fields.tucse = 0;
2688 context_desc->tcp_seg_setup.data = 0;
2689 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
2691 buffer_info->time_stamp = jiffies;
2693 if (unlikely(++i == tx_ring->count)) i = 0;
2694 tx_ring->next_to_use = i;
2702 #define E1000_MAX_TXD_PWR 12
2703 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2706 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2707 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd,
2708 unsigned int nr_frags, unsigned int mss)
2710 struct e1000_buffer *buffer_info;
2711 unsigned int len = skb->len;
2712 unsigned int offset = 0, size, count = 0, i;
2714 len -= skb->data_len;
2716 i = tx_ring->next_to_use;
2719 buffer_info = &tx_ring->buffer_info[i];
2720 size = min(len, max_per_txd);
2722 /* Workaround for Controller erratum --
2723 * descriptor for non-tso packet in a linear SKB that follows a
2724 * tso gets written back prematurely before the data is fully
2725 * DMA'd to the controller */
2726 if (!skb->data_len && tx_ring->last_tx_tso &&
2728 tx_ring->last_tx_tso = 0;
2732 /* Workaround for premature desc write-backs
2733 * in TSO mode. Append 4-byte sentinel desc */
2734 if (unlikely(mss && !nr_frags && size == len && size > 8))
2737 /* work-around for errata 10 and it applies
2738 * to all controllers in PCI-X mode
2739 * The fix is to make sure that the first descriptor of a
2740 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2742 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2743 (size > 2015) && count == 0))
2746 /* Workaround for potential 82544 hang in PCI-X. Avoid
2747 * terminating buffers within evenly-aligned dwords. */
2748 if (unlikely(adapter->pcix_82544 &&
2749 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2753 buffer_info->length = size;
2755 pci_map_single(adapter->pdev,
2759 buffer_info->time_stamp = jiffies;
2764 if (unlikely(++i == tx_ring->count)) i = 0;
2767 for (f = 0; f < nr_frags; f++) {
2768 struct skb_frag_struct *frag;
2770 frag = &skb_shinfo(skb)->frags[f];
2772 offset = frag->page_offset;
2775 buffer_info = &tx_ring->buffer_info[i];
2776 size = min(len, max_per_txd);
2778 /* Workaround for premature desc write-backs
2779 * in TSO mode. Append 4-byte sentinel desc */
2780 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
2783 /* Workaround for potential 82544 hang in PCI-X.
2784 * Avoid terminating buffers within evenly-aligned
2786 if (unlikely(adapter->pcix_82544 &&
2787 !((unsigned long)(frag->page+offset+size-1) & 4) &&
2791 buffer_info->length = size;
2793 pci_map_page(adapter->pdev,
2798 buffer_info->time_stamp = jiffies;
2803 if (unlikely(++i == tx_ring->count)) i = 0;
2807 i = (i == 0) ? tx_ring->count - 1 : i - 1;
2808 tx_ring->buffer_info[i].skb = skb;
2809 tx_ring->buffer_info[first].next_to_watch = i;
2815 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2816 int tx_flags, int count)
2818 struct e1000_tx_desc *tx_desc = NULL;
2819 struct e1000_buffer *buffer_info;
2820 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2823 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2824 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2826 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2828 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2829 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2832 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2833 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2834 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2837 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
2838 txd_lower |= E1000_TXD_CMD_VLE;
2839 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
2842 i = tx_ring->next_to_use;
2845 buffer_info = &tx_ring->buffer_info[i];
2846 tx_desc = E1000_TX_DESC(*tx_ring, i);
2847 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2848 tx_desc->lower.data =
2849 cpu_to_le32(txd_lower | buffer_info->length);
2850 tx_desc->upper.data = cpu_to_le32(txd_upper);
2851 if (unlikely(++i == tx_ring->count)) i = 0;
2854 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
2856 /* Force memory writes to complete before letting h/w
2857 * know there are new descriptors to fetch. (Only
2858 * applicable for weak-ordered memory model archs,
2859 * such as IA-64). */
2862 tx_ring->next_to_use = i;
2863 writel(i, adapter->hw.hw_addr + tx_ring->tdt);
2867 * 82547 workaround to avoid controller hang in half-duplex environment.
2868 * The workaround is to avoid queuing a large packet that would span
2869 * the internal Tx FIFO ring boundary by notifying the stack to resend
2870 * the packet at a later time. This gives the Tx FIFO an opportunity to
2871 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2872 * to the beginning of the Tx FIFO.
2875 #define E1000_FIFO_HDR 0x10
2876 #define E1000_82547_PAD_LEN 0x3E0
2879 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
2881 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
2882 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
2884 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
2886 if (adapter->link_duplex != HALF_DUPLEX)
2887 goto no_fifo_stall_required;
2889 if (atomic_read(&adapter->tx_fifo_stall))
2892 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
2893 atomic_set(&adapter->tx_fifo_stall, 1);
2897 no_fifo_stall_required:
2898 adapter->tx_fifo_head += skb_fifo_len;
2899 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
2900 adapter->tx_fifo_head -= adapter->tx_fifo_size;
2904 #define MINIMUM_DHCP_PACKET_SIZE 282
2906 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
2908 struct e1000_hw *hw = &adapter->hw;
2909 uint16_t length, offset;
2910 if (vlan_tx_tag_present(skb)) {
2911 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
2912 ( adapter->hw.mng_cookie.status &
2913 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
2916 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
2917 struct ethhdr *eth = (struct ethhdr *) skb->data;
2918 if ((htons(ETH_P_IP) == eth->h_proto)) {
2919 const struct iphdr *ip =
2920 (struct iphdr *)((uint8_t *)skb->data+14);
2921 if (IPPROTO_UDP == ip->protocol) {
2922 struct udphdr *udp =
2923 (struct udphdr *)((uint8_t *)ip +
2925 if (ntohs(udp->dest) == 67) {
2926 offset = (uint8_t *)udp + 8 - skb->data;
2927 length = skb->len - offset;
2929 return e1000_mng_write_dhcp_info(hw,
2939 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
2941 struct e1000_adapter *adapter = netdev_priv(netdev);
2942 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
2944 netif_stop_queue(netdev);
2945 /* Herbert's original patch had:
2946 * smp_mb__after_netif_stop_queue();
2947 * but since that doesn't exist yet, just open code it. */
2950 /* We need to check again in a case another CPU has just
2951 * made room available. */
2952 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
2956 netif_start_queue(netdev);
2960 static int e1000_maybe_stop_tx(struct net_device *netdev,
2961 struct e1000_tx_ring *tx_ring, int size)
2963 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
2965 return __e1000_maybe_stop_tx(netdev, size);
2968 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2970 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2972 struct e1000_adapter *adapter = netdev_priv(netdev);
2973 struct e1000_tx_ring *tx_ring;
2974 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
2975 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
2976 unsigned int tx_flags = 0;
2977 unsigned int len = skb->len;
2978 unsigned long flags;
2979 unsigned int nr_frags = 0;
2980 unsigned int mss = 0;
2984 len -= skb->data_len;
2986 /* This goes back to the question of how to logically map a tx queue
2987 * to a flow. Right now, performance is impacted slightly negatively
2988 * if using multiple tx queues. If the stack breaks away from a
2989 * single qdisc implementation, we can look at this again. */
2990 tx_ring = adapter->tx_ring;
2992 if (unlikely(skb->len <= 0)) {
2993 dev_kfree_skb_any(skb);
2994 return NETDEV_TX_OK;
2997 /* 82571 and newer doesn't need the workaround that limited descriptor
2999 if (adapter->hw.mac_type >= e1000_82571)
3003 mss = skb_shinfo(skb)->gso_size;
3004 /* The controller does a simple calculation to
3005 * make sure there is enough room in the FIFO before
3006 * initiating the DMA for each buffer. The calc is:
3007 * 4 = ceil(buffer len/mss). To make sure we don't
3008 * overrun the FIFO, adjust the max buffer len if mss
3012 max_per_txd = min(mss << 2, max_per_txd);
3013 max_txd_pwr = fls(max_per_txd) - 1;
3015 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3016 * points to just header, pull a few bytes of payload from
3017 * frags into skb->data */
3018 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
3019 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
3020 switch (adapter->hw.mac_type) {
3021 unsigned int pull_size;
3026 pull_size = min((unsigned int)4, skb->data_len);
3027 if (!__pskb_pull_tail(skb, pull_size)) {
3029 "__pskb_pull_tail failed.\n");
3030 dev_kfree_skb_any(skb);
3031 return NETDEV_TX_OK;
3033 len = skb->len - skb->data_len;
3042 /* reserve a descriptor for the offload context */
3043 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3047 if (skb->ip_summed == CHECKSUM_PARTIAL)
3052 /* Controller Erratum workaround */
3053 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
3057 count += TXD_USE_COUNT(len, max_txd_pwr);
3059 if (adapter->pcix_82544)
3062 /* work-around for errata 10 and it applies to all controllers
3063 * in PCI-X mode, so add one more descriptor to the count
3065 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
3069 nr_frags = skb_shinfo(skb)->nr_frags;
3070 for (f = 0; f < nr_frags; f++)
3071 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3073 if (adapter->pcix_82544)
3077 if (adapter->hw.tx_pkt_filtering &&
3078 (adapter->hw.mac_type == e1000_82573))
3079 e1000_transfer_dhcp_info(adapter, skb);
3081 local_irq_save(flags);
3082 if (!spin_trylock(&tx_ring->tx_lock)) {
3083 /* Collision - tell upper layer to requeue */
3084 local_irq_restore(flags);
3085 return NETDEV_TX_LOCKED;
3088 /* need: count + 2 desc gap to keep tail from touching
3089 * head, otherwise try next time */
3090 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) {
3091 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3092 return NETDEV_TX_BUSY;
3095 if (unlikely(adapter->hw.mac_type == e1000_82547)) {
3096 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
3097 netif_stop_queue(netdev);
3098 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
3099 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3100 return NETDEV_TX_BUSY;
3104 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
3105 tx_flags |= E1000_TX_FLAGS_VLAN;
3106 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3109 first = tx_ring->next_to_use;
3111 tso = e1000_tso(adapter, tx_ring, skb);
3113 dev_kfree_skb_any(skb);
3114 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3115 return NETDEV_TX_OK;
3119 tx_ring->last_tx_tso = 1;
3120 tx_flags |= E1000_TX_FLAGS_TSO;
3121 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
3122 tx_flags |= E1000_TX_FLAGS_CSUM;
3124 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3125 * 82571 hardware supports TSO capabilities for IPv6 as well...
3126 * no longer assume, we must. */
3127 if (likely(skb->protocol == htons(ETH_P_IP)))
3128 tx_flags |= E1000_TX_FLAGS_IPV4;
3130 e1000_tx_queue(adapter, tx_ring, tx_flags,
3131 e1000_tx_map(adapter, tx_ring, skb, first,
3132 max_per_txd, nr_frags, mss));
3134 netdev->trans_start = jiffies;
3136 /* Make sure there is space in the ring for the next send. */
3137 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
3139 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3140 return NETDEV_TX_OK;
3144 * e1000_tx_timeout - Respond to a Tx Hang
3145 * @netdev: network interface device structure
3149 e1000_tx_timeout(struct net_device *netdev)
3151 struct e1000_adapter *adapter = netdev_priv(netdev);
3153 /* Do the reset outside of interrupt context */
3154 adapter->tx_timeout_count++;
3155 schedule_work(&adapter->reset_task);
3159 e1000_reset_task(struct net_device *netdev)
3161 struct e1000_adapter *adapter = netdev_priv(netdev);
3163 e1000_reinit_locked(adapter);
3167 * e1000_get_stats - Get System Network Statistics
3168 * @netdev: network interface device structure
3170 * Returns the address of the device statistics structure.
3171 * The statistics are actually updated from the timer callback.
3174 static struct net_device_stats *
3175 e1000_get_stats(struct net_device *netdev)
3177 struct e1000_adapter *adapter = netdev_priv(netdev);
3179 /* only return the current stats */
3180 return &adapter->net_stats;
3184 * e1000_change_mtu - Change the Maximum Transfer Unit
3185 * @netdev: network interface device structure
3186 * @new_mtu: new value for maximum frame size
3188 * Returns 0 on success, negative on failure
3192 e1000_change_mtu(struct net_device *netdev, int new_mtu)
3194 struct e1000_adapter *adapter = netdev_priv(netdev);
3195 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
3196 uint16_t eeprom_data = 0;
3198 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3199 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3200 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
3204 /* Adapter-specific max frame size limits. */
3205 switch (adapter->hw.mac_type) {
3206 case e1000_undefined ... e1000_82542_rev2_1:
3208 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3209 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
3214 /* Jumbo Frames not supported if:
3215 * - this is not an 82573L device
3216 * - ASPM is enabled in any way (0x1A bits 3:2) */
3217 e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1,
3219 if ((adapter->hw.device_id != E1000_DEV_ID_82573L) ||
3220 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
3221 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3223 "Jumbo Frames not supported.\n");
3228 /* ERT will be enabled later to enable wire speed receives */
3230 /* fall through to get support */
3233 case e1000_80003es2lan:
3234 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3235 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3236 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
3241 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3245 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3246 * means we reserve 2 more, this pushes us to allocate from the next
3248 * i.e. RXBUFFER_2048 --> size-4096 slab */
3250 if (max_frame <= E1000_RXBUFFER_256)
3251 adapter->rx_buffer_len = E1000_RXBUFFER_256;
3252 else if (max_frame <= E1000_RXBUFFER_512)
3253 adapter->rx_buffer_len = E1000_RXBUFFER_512;
3254 else if (max_frame <= E1000_RXBUFFER_1024)
3255 adapter->rx_buffer_len = E1000_RXBUFFER_1024;
3256 else if (max_frame <= E1000_RXBUFFER_2048)
3257 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3258 else if (max_frame <= E1000_RXBUFFER_4096)
3259 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
3260 else if (max_frame <= E1000_RXBUFFER_8192)
3261 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
3262 else if (max_frame <= E1000_RXBUFFER_16384)
3263 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3265 /* adjust allocation if LPE protects us, and we aren't using SBP */
3266 if (!adapter->hw.tbi_compatibility_on &&
3267 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
3268 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3269 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3271 netdev->mtu = new_mtu;
3273 if (netif_running(netdev))
3274 e1000_reinit_locked(adapter);
3276 adapter->hw.max_frame_size = max_frame;
3282 * e1000_update_stats - Update the board statistics counters
3283 * @adapter: board private structure
3287 e1000_update_stats(struct e1000_adapter *adapter)
3289 struct e1000_hw *hw = &adapter->hw;
3290 struct pci_dev *pdev = adapter->pdev;
3291 unsigned long flags;
3294 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3297 * Prevent stats update while adapter is being reset, or if the pci
3298 * connection is down.
3300 if (adapter->link_speed == 0)
3302 if (pdev->error_state && pdev->error_state != pci_channel_io_normal)
3305 spin_lock_irqsave(&adapter->stats_lock, flags);
3307 /* these counters are modified from e1000_adjust_tbi_stats,
3308 * called from the interrupt context, so they must only
3309 * be written while holding adapter->stats_lock
3312 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
3313 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
3314 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
3315 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
3316 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
3317 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
3318 adapter->stats.roc += E1000_READ_REG(hw, ROC);
3320 if (adapter->hw.mac_type != e1000_ich8lan) {
3321 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
3322 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
3323 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
3324 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
3325 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
3326 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
3329 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
3330 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
3331 adapter->stats.scc += E1000_READ_REG(hw, SCC);
3332 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
3333 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
3334 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
3335 adapter->stats.dc += E1000_READ_REG(hw, DC);
3336 adapter->stats.sec += E1000_READ_REG(hw, SEC);
3337 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
3338 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
3339 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
3340 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
3341 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
3342 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
3343 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
3344 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
3345 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
3346 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
3347 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
3348 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
3349 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
3350 adapter->stats.torl += E1000_READ_REG(hw, TORL);
3351 adapter->stats.torh += E1000_READ_REG(hw, TORH);
3352 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
3353 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
3354 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
3356 if (adapter->hw.mac_type != e1000_ich8lan) {
3357 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
3358 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
3359 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
3360 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
3361 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
3362 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
3365 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
3366 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
3368 /* used for adaptive IFS */
3370 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
3371 adapter->stats.tpt += hw->tx_packet_delta;
3372 hw->collision_delta = E1000_READ_REG(hw, COLC);
3373 adapter->stats.colc += hw->collision_delta;
3375 if (hw->mac_type >= e1000_82543) {
3376 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
3377 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
3378 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
3379 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
3380 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
3381 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
3383 if (hw->mac_type > e1000_82547_rev_2) {
3384 adapter->stats.iac += E1000_READ_REG(hw, IAC);
3385 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC);
3387 if (adapter->hw.mac_type != e1000_ich8lan) {
3388 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC);
3389 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC);
3390 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC);
3391 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC);
3392 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC);
3393 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC);
3394 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC);
3398 /* Fill out the OS statistics structure */
3399 adapter->net_stats.rx_packets = adapter->stats.gprc;
3400 adapter->net_stats.tx_packets = adapter->stats.gptc;
3401 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
3402 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
3403 adapter->net_stats.multicast = adapter->stats.mprc;
3404 adapter->net_stats.collisions = adapter->stats.colc;
3408 /* RLEC on some newer hardware can be incorrect so build
3409 * our own version based on RUC and ROC */
3410 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3411 adapter->stats.crcerrs + adapter->stats.algnerrc +
3412 adapter->stats.ruc + adapter->stats.roc +
3413 adapter->stats.cexterr;
3414 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3415 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
3416 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3417 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3418 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3421 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3422 adapter->net_stats.tx_errors = adapter->stats.txerrc;
3423 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3424 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3425 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3427 /* Tx Dropped needs to be maintained elsewhere */
3430 if (hw->media_type == e1000_media_type_copper) {
3431 if ((adapter->link_speed == SPEED_1000) &&
3432 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3433 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3434 adapter->phy_stats.idle_errors += phy_tmp;
3437 if ((hw->mac_type <= e1000_82546) &&
3438 (hw->phy_type == e1000_phy_m88) &&
3439 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3440 adapter->phy_stats.receive_errors += phy_tmp;
3443 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3447 * e1000_intr - Interrupt Handler
3448 * @irq: interrupt number
3449 * @data: pointer to a network interface device structure
3453 e1000_intr(int irq, void *data)
3455 struct net_device *netdev = data;
3456 struct e1000_adapter *adapter = netdev_priv(netdev);
3457 struct e1000_hw *hw = &adapter->hw;
3458 uint32_t rctl, icr = E1000_READ_REG(hw, ICR);
3459 #ifndef CONFIG_E1000_NAPI
3462 /* Interrupt Auto-Mask...upon reading ICR,
3463 * interrupts are masked. No need for the
3464 * IMC write, but it does mean we should
3465 * account for it ASAP. */
3466 if (likely(hw->mac_type >= e1000_82571))
3467 atomic_inc(&adapter->irq_sem);
3470 if (unlikely(!icr)) {
3471 #ifdef CONFIG_E1000_NAPI
3472 if (hw->mac_type >= e1000_82571)
3473 e1000_irq_enable(adapter);
3475 return IRQ_NONE; /* Not our interrupt */
3478 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3479 hw->get_link_status = 1;
3480 /* 80003ES2LAN workaround--
3481 * For packet buffer work-around on link down event;
3482 * disable receives here in the ISR and
3483 * reset adapter in watchdog
3485 if (netif_carrier_ok(netdev) &&
3486 (adapter->hw.mac_type == e1000_80003es2lan)) {
3487 /* disable receives */
3488 rctl = E1000_READ_REG(hw, RCTL);
3489 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
3491 /* guard against interrupt when we're going down */
3492 if (!test_bit(__E1000_DOWN, &adapter->flags))
3493 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3496 #ifdef CONFIG_E1000_NAPI
3497 if (unlikely(hw->mac_type < e1000_82571)) {
3498 atomic_inc(&adapter->irq_sem);
3499 E1000_WRITE_REG(hw, IMC, ~0);
3500 E1000_WRITE_FLUSH(hw);
3502 if (likely(netif_rx_schedule_prep(netdev)))
3503 __netif_rx_schedule(netdev);
3505 /* this really should not happen! if it does it is basically a
3506 * bug, but not a hard error, so enable ints and continue */
3507 e1000_irq_enable(adapter);
3509 /* Writing IMC and IMS is needed for 82547.
3510 * Due to Hub Link bus being occupied, an interrupt
3511 * de-assertion message is not able to be sent.
3512 * When an interrupt assertion message is generated later,
3513 * two messages are re-ordered and sent out.
3514 * That causes APIC to think 82547 is in de-assertion
3515 * state, while 82547 is in assertion state, resulting
3516 * in dead lock. Writing IMC forces 82547 into
3517 * de-assertion state.
3519 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) {
3520 atomic_inc(&adapter->irq_sem);
3521 E1000_WRITE_REG(hw, IMC, ~0);
3524 for (i = 0; i < E1000_MAX_INTR; i++)
3525 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
3526 !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
3529 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
3530 e1000_irq_enable(adapter);
3536 #ifdef CONFIG_E1000_NAPI
3538 * e1000_clean - NAPI Rx polling callback
3539 * @adapter: board private structure
3543 e1000_clean(struct net_device *poll_dev, int *budget)
3545 struct e1000_adapter *adapter;
3546 int work_to_do = min(*budget, poll_dev->quota);
3547 int tx_cleaned = 0, work_done = 0;
3549 /* Must NOT use netdev_priv macro here. */
3550 adapter = poll_dev->priv;
3552 /* Keep link state information with original netdev */
3553 if (!netif_carrier_ok(poll_dev))
3556 /* e1000_clean is called per-cpu. This lock protects
3557 * tx_ring[0] from being cleaned by multiple cpus
3558 * simultaneously. A failure obtaining the lock means
3559 * tx_ring[0] is currently being cleaned anyway. */
3560 if (spin_trylock(&adapter->tx_queue_lock)) {
3561 tx_cleaned = e1000_clean_tx_irq(adapter,
3562 &adapter->tx_ring[0]);
3563 spin_unlock(&adapter->tx_queue_lock);
3566 adapter->clean_rx(adapter, &adapter->rx_ring[0],
3567 &work_done, work_to_do);
3569 *budget -= work_done;
3570 poll_dev->quota -= work_done;
3572 /* If no Tx and not enough Rx work done, exit the polling mode */
3573 if ((!tx_cleaned && (work_done == 0)) ||
3574 !netif_running(poll_dev)) {
3576 netif_rx_complete(poll_dev);
3577 e1000_irq_enable(adapter);
3586 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3587 * @adapter: board private structure
3591 e1000_clean_tx_irq(struct e1000_adapter *adapter,
3592 struct e1000_tx_ring *tx_ring)
3594 struct net_device *netdev = adapter->netdev;
3595 struct e1000_tx_desc *tx_desc, *eop_desc;
3596 struct e1000_buffer *buffer_info;
3597 unsigned int i, eop;
3598 #ifdef CONFIG_E1000_NAPI
3599 unsigned int count = 0;
3601 boolean_t cleaned = FALSE;
3603 i = tx_ring->next_to_clean;
3604 eop = tx_ring->buffer_info[i].next_to_watch;
3605 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3607 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
3608 for (cleaned = FALSE; !cleaned; ) {
3609 tx_desc = E1000_TX_DESC(*tx_ring, i);
3610 buffer_info = &tx_ring->buffer_info[i];
3611 cleaned = (i == eop);
3613 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3614 memset(tx_desc, 0, sizeof(struct e1000_tx_desc));
3616 if (unlikely(++i == tx_ring->count)) i = 0;
3619 eop = tx_ring->buffer_info[i].next_to_watch;
3620 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3621 #ifdef CONFIG_E1000_NAPI
3622 #define E1000_TX_WEIGHT 64
3623 /* weight of a sort for tx, to avoid endless transmit cleanup */
3624 if (count++ == E1000_TX_WEIGHT) break;
3628 tx_ring->next_to_clean = i;
3630 #define TX_WAKE_THRESHOLD 32
3631 if (unlikely(cleaned && netif_carrier_ok(netdev) &&
3632 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3633 /* Make sure that anybody stopping the queue after this
3634 * sees the new next_to_clean.
3637 if (netif_queue_stopped(netdev))
3638 netif_wake_queue(netdev);
3641 if (adapter->detect_tx_hung) {
3642 /* Detect a transmit hang in hardware, this serializes the
3643 * check with the clearing of time_stamp and movement of i */
3644 adapter->detect_tx_hung = FALSE;
3645 if (tx_ring->buffer_info[eop].dma &&
3646 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3647 (adapter->tx_timeout_factor * HZ))
3648 && !(E1000_READ_REG(&adapter->hw, STATUS) &
3649 E1000_STATUS_TXOFF)) {
3651 /* detected Tx unit hang */
3652 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3656 " next_to_use <%x>\n"
3657 " next_to_clean <%x>\n"
3658 "buffer_info[next_to_clean]\n"
3659 " time_stamp <%lx>\n"
3660 " next_to_watch <%x>\n"
3662 " next_to_watch.status <%x>\n",
3663 (unsigned long)((tx_ring - adapter->tx_ring) /
3664 sizeof(struct e1000_tx_ring)),
3665 readl(adapter->hw.hw_addr + tx_ring->tdh),
3666 readl(adapter->hw.hw_addr + tx_ring->tdt),
3667 tx_ring->next_to_use,
3668 tx_ring->next_to_clean,
3669 tx_ring->buffer_info[eop].time_stamp,
3672 eop_desc->upper.fields.status);
3673 netif_stop_queue(netdev);
3680 * e1000_rx_checksum - Receive Checksum Offload for 82543
3681 * @adapter: board private structure
3682 * @status_err: receive descriptor status and error fields
3683 * @csum: receive descriptor csum field
3684 * @sk_buff: socket buffer with received data
3688 e1000_rx_checksum(struct e1000_adapter *adapter,
3689 uint32_t status_err, uint32_t csum,
3690 struct sk_buff *skb)
3692 uint16_t status = (uint16_t)status_err;
3693 uint8_t errors = (uint8_t)(status_err >> 24);
3694 skb->ip_summed = CHECKSUM_NONE;
3696 /* 82543 or newer only */
3697 if (unlikely(adapter->hw.mac_type < e1000_82543)) return;
3698 /* Ignore Checksum bit is set */
3699 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
3700 /* TCP/UDP checksum error bit is set */
3701 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3702 /* let the stack verify checksum errors */
3703 adapter->hw_csum_err++;
3706 /* TCP/UDP Checksum has not been calculated */
3707 if (adapter->hw.mac_type <= e1000_82547_rev_2) {
3708 if (!(status & E1000_RXD_STAT_TCPCS))
3711 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
3714 /* It must be a TCP or UDP packet with a valid checksum */
3715 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3716 /* TCP checksum is good */
3717 skb->ip_summed = CHECKSUM_UNNECESSARY;
3718 } else if (adapter->hw.mac_type > e1000_82547_rev_2) {
3719 /* IP fragment with UDP payload */
3720 /* Hardware complements the payload checksum, so we undo it
3721 * and then put the value in host order for further stack use.
3723 csum = ntohl(csum ^ 0xFFFF);
3725 skb->ip_summed = CHECKSUM_COMPLETE;
3727 adapter->hw_csum_good++;
3731 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3732 * @adapter: board private structure
3736 #ifdef CONFIG_E1000_NAPI
3737 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3738 struct e1000_rx_ring *rx_ring,
3739 int *work_done, int work_to_do)
3741 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3742 struct e1000_rx_ring *rx_ring)
3745 struct net_device *netdev = adapter->netdev;
3746 struct pci_dev *pdev = adapter->pdev;
3747 struct e1000_rx_desc *rx_desc, *next_rxd;
3748 struct e1000_buffer *buffer_info, *next_buffer;
3749 unsigned long flags;
3753 int cleaned_count = 0;
3754 boolean_t cleaned = FALSE;
3756 i = rx_ring->next_to_clean;
3757 rx_desc = E1000_RX_DESC(*rx_ring, i);
3758 buffer_info = &rx_ring->buffer_info[i];
3760 while (rx_desc->status & E1000_RXD_STAT_DD) {
3761 struct sk_buff *skb;
3764 #ifdef CONFIG_E1000_NAPI
3765 if (*work_done >= work_to_do)
3769 status = rx_desc->status;
3770 skb = buffer_info->skb;
3771 buffer_info->skb = NULL;
3773 prefetch(skb->data - NET_IP_ALIGN);
3775 if (++i == rx_ring->count) i = 0;
3776 next_rxd = E1000_RX_DESC(*rx_ring, i);
3779 next_buffer = &rx_ring->buffer_info[i];
3783 pci_unmap_single(pdev,
3785 buffer_info->length,
3786 PCI_DMA_FROMDEVICE);
3788 length = le16_to_cpu(rx_desc->length);
3790 if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
3791 /* All receives must fit into a single buffer */
3792 E1000_DBG("%s: Receive packet consumed multiple"
3793 " buffers\n", netdev->name);
3795 buffer_info->skb = skb;
3799 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
3800 last_byte = *(skb->data + length - 1);
3801 if (TBI_ACCEPT(&adapter->hw, status,
3802 rx_desc->errors, length, last_byte)) {
3803 spin_lock_irqsave(&adapter->stats_lock, flags);
3804 e1000_tbi_adjust_stats(&adapter->hw,
3807 spin_unlock_irqrestore(&adapter->stats_lock,
3812 buffer_info->skb = skb;
3817 /* adjust length to remove Ethernet CRC, this must be
3818 * done after the TBI_ACCEPT workaround above */
3821 /* code added for copybreak, this should improve
3822 * performance for small packets with large amounts
3823 * of reassembly being done in the stack */
3824 #define E1000_CB_LENGTH 256
3825 if (length < E1000_CB_LENGTH) {
3826 struct sk_buff *new_skb =
3827 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
3829 skb_reserve(new_skb, NET_IP_ALIGN);
3830 memcpy(new_skb->data - NET_IP_ALIGN,
3831 skb->data - NET_IP_ALIGN,
3832 length + NET_IP_ALIGN);
3833 /* save the skb in buffer_info as good */
3834 buffer_info->skb = skb;
3836 skb_put(skb, length);
3839 skb_put(skb, length);
3841 /* end copybreak code */
3843 /* Receive Checksum Offload */
3844 e1000_rx_checksum(adapter,
3845 (uint32_t)(status) |
3846 ((uint32_t)(rx_desc->errors) << 24),
3847 le16_to_cpu(rx_desc->csum), skb);
3849 skb->protocol = eth_type_trans(skb, netdev);
3850 #ifdef CONFIG_E1000_NAPI
3851 if (unlikely(adapter->vlgrp &&
3852 (status & E1000_RXD_STAT_VP))) {
3853 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3854 le16_to_cpu(rx_desc->special) &
3855 E1000_RXD_SPC_VLAN_MASK);
3857 netif_receive_skb(skb);
3859 #else /* CONFIG_E1000_NAPI */
3860 if (unlikely(adapter->vlgrp &&
3861 (status & E1000_RXD_STAT_VP))) {
3862 vlan_hwaccel_rx(skb, adapter->vlgrp,
3863 le16_to_cpu(rx_desc->special) &
3864 E1000_RXD_SPC_VLAN_MASK);
3868 #endif /* CONFIG_E1000_NAPI */
3869 netdev->last_rx = jiffies;
3872 rx_desc->status = 0;
3874 /* return some buffers to hardware, one at a time is too slow */
3875 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
3876 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3880 /* use prefetched values */
3882 buffer_info = next_buffer;
3884 rx_ring->next_to_clean = i;
3886 cleaned_count = E1000_DESC_UNUSED(rx_ring);
3888 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3894 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3895 * @adapter: board private structure
3899 #ifdef CONFIG_E1000_NAPI
3900 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3901 struct e1000_rx_ring *rx_ring,
3902 int *work_done, int work_to_do)
3904 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3905 struct e1000_rx_ring *rx_ring)
3908 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
3909 struct net_device *netdev = adapter->netdev;
3910 struct pci_dev *pdev = adapter->pdev;
3911 struct e1000_buffer *buffer_info, *next_buffer;
3912 struct e1000_ps_page *ps_page;
3913 struct e1000_ps_page_dma *ps_page_dma;
3914 struct sk_buff *skb;
3916 uint32_t length, staterr;
3917 int cleaned_count = 0;
3918 boolean_t cleaned = FALSE;
3920 i = rx_ring->next_to_clean;
3921 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3922 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
3923 buffer_info = &rx_ring->buffer_info[i];
3925 while (staterr & E1000_RXD_STAT_DD) {
3926 ps_page = &rx_ring->ps_page[i];
3927 ps_page_dma = &rx_ring->ps_page_dma[i];
3928 #ifdef CONFIG_E1000_NAPI
3929 if (unlikely(*work_done >= work_to_do))
3933 skb = buffer_info->skb;
3935 /* in the packet split case this is header only */
3936 prefetch(skb->data - NET_IP_ALIGN);
3938 if (++i == rx_ring->count) i = 0;
3939 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
3942 next_buffer = &rx_ring->buffer_info[i];
3946 pci_unmap_single(pdev, buffer_info->dma,
3947 buffer_info->length,
3948 PCI_DMA_FROMDEVICE);
3950 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) {
3951 E1000_DBG("%s: Packet Split buffers didn't pick up"
3952 " the full packet\n", netdev->name);
3953 dev_kfree_skb_irq(skb);
3957 if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
3958 dev_kfree_skb_irq(skb);
3962 length = le16_to_cpu(rx_desc->wb.middle.length0);
3964 if (unlikely(!length)) {
3965 E1000_DBG("%s: Last part of the packet spanning"
3966 " multiple descriptors\n", netdev->name);
3967 dev_kfree_skb_irq(skb);
3972 skb_put(skb, length);
3975 /* this looks ugly, but it seems compiler issues make it
3976 more efficient than reusing j */
3977 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
3979 /* page alloc/put takes too long and effects small packet
3980 * throughput, so unsplit small packets and save the alloc/put*/
3981 if (l1 && ((length + l1) <= adapter->rx_ps_bsize0)) {
3983 /* there is no documentation about how to call
3984 * kmap_atomic, so we can't hold the mapping
3986 pci_dma_sync_single_for_cpu(pdev,
3987 ps_page_dma->ps_page_dma[0],
3989 PCI_DMA_FROMDEVICE);
3990 vaddr = kmap_atomic(ps_page->ps_page[0],
3991 KM_SKB_DATA_SOFTIRQ);
3992 memcpy(skb->tail, vaddr, l1);
3993 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
3994 pci_dma_sync_single_for_device(pdev,
3995 ps_page_dma->ps_page_dma[0],
3996 PAGE_SIZE, PCI_DMA_FROMDEVICE);
3997 /* remove the CRC */
4004 for (j = 0; j < adapter->rx_ps_pages; j++) {
4005 if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j])))
4007 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j],
4008 PAGE_SIZE, PCI_DMA_FROMDEVICE);
4009 ps_page_dma->ps_page_dma[j] = 0;
4010 skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0,
4012 ps_page->ps_page[j] = NULL;
4014 skb->data_len += length;
4015 skb->truesize += length;
4018 /* strip the ethernet crc, problem is we're using pages now so
4019 * this whole operation can get a little cpu intensive */
4020 pskb_trim(skb, skb->len - 4);
4023 e1000_rx_checksum(adapter, staterr,
4024 le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
4025 skb->protocol = eth_type_trans(skb, netdev);
4027 if (likely(rx_desc->wb.upper.header_status &
4028 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)))
4029 adapter->rx_hdr_split++;
4030 #ifdef CONFIG_E1000_NAPI
4031 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
4032 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
4033 le16_to_cpu(rx_desc->wb.middle.vlan) &
4034 E1000_RXD_SPC_VLAN_MASK);
4036 netif_receive_skb(skb);
4038 #else /* CONFIG_E1000_NAPI */
4039 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
4040 vlan_hwaccel_rx(skb, adapter->vlgrp,
4041 le16_to_cpu(rx_desc->wb.middle.vlan) &
4042 E1000_RXD_SPC_VLAN_MASK);
4046 #endif /* CONFIG_E1000_NAPI */
4047 netdev->last_rx = jiffies;
4050 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
4051 buffer_info->skb = NULL;
4053 /* return some buffers to hardware, one at a time is too slow */
4054 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4055 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4059 /* use prefetched values */
4061 buffer_info = next_buffer;
4063 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
4065 rx_ring->next_to_clean = i;
4067 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4069 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4075 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4076 * @adapter: address of board private structure
4080 e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4081 struct e1000_rx_ring *rx_ring,
4084 struct net_device *netdev = adapter->netdev;
4085 struct pci_dev *pdev = adapter->pdev;
4086 struct e1000_rx_desc *rx_desc;
4087 struct e1000_buffer *buffer_info;
4088 struct sk_buff *skb;
4090 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
4092 i = rx_ring->next_to_use;
4093 buffer_info = &rx_ring->buffer_info[i];
4095 while (cleaned_count--) {
4096 skb = buffer_info->skb;
4102 skb = netdev_alloc_skb(netdev, bufsz);
4103 if (unlikely(!skb)) {
4104 /* Better luck next round */
4105 adapter->alloc_rx_buff_failed++;
4109 /* Fix for errata 23, can't cross 64kB boundary */
4110 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4111 struct sk_buff *oldskb = skb;
4112 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
4113 "at %p\n", bufsz, skb->data);
4114 /* Try again, without freeing the previous */
4115 skb = netdev_alloc_skb(netdev, bufsz);
4116 /* Failed allocation, critical failure */
4118 dev_kfree_skb(oldskb);
4122 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4125 dev_kfree_skb(oldskb);
4126 break; /* while !buffer_info->skb */
4129 /* Use new allocation */
4130 dev_kfree_skb(oldskb);
4132 /* Make buffer alignment 2 beyond a 16 byte boundary
4133 * this will result in a 16 byte aligned IP header after
4134 * the 14 byte MAC header is removed
4136 skb_reserve(skb, NET_IP_ALIGN);
4138 buffer_info->skb = skb;
4139 buffer_info->length = adapter->rx_buffer_len;
4141 buffer_info->dma = pci_map_single(pdev,
4143 adapter->rx_buffer_len,
4144 PCI_DMA_FROMDEVICE);
4146 /* Fix for errata 23, can't cross 64kB boundary */
4147 if (!e1000_check_64k_bound(adapter,
4148 (void *)(unsigned long)buffer_info->dma,
4149 adapter->rx_buffer_len)) {
4150 DPRINTK(RX_ERR, ERR,
4151 "dma align check failed: %u bytes at %p\n",
4152 adapter->rx_buffer_len,
4153 (void *)(unsigned long)buffer_info->dma);
4155 buffer_info->skb = NULL;
4157 pci_unmap_single(pdev, buffer_info->dma,
4158 adapter->rx_buffer_len,
4159 PCI_DMA_FROMDEVICE);
4161 break; /* while !buffer_info->skb */
4163 rx_desc = E1000_RX_DESC(*rx_ring, i);
4164 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4166 if (unlikely(++i == rx_ring->count))
4168 buffer_info = &rx_ring->buffer_info[i];
4171 if (likely(rx_ring->next_to_use != i)) {
4172 rx_ring->next_to_use = i;
4173 if (unlikely(i-- == 0))
4174 i = (rx_ring->count - 1);
4176 /* Force memory writes to complete before letting h/w
4177 * know there are new descriptors to fetch. (Only
4178 * applicable for weak-ordered memory model archs,
4179 * such as IA-64). */
4181 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
4186 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4187 * @adapter: address of board private structure
4191 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
4192 struct e1000_rx_ring *rx_ring,
4195 struct net_device *netdev = adapter->netdev;
4196 struct pci_dev *pdev = adapter->pdev;
4197 union e1000_rx_desc_packet_split *rx_desc;
4198 struct e1000_buffer *buffer_info;
4199 struct e1000_ps_page *ps_page;
4200 struct e1000_ps_page_dma *ps_page_dma;
4201 struct sk_buff *skb;
4204 i = rx_ring->next_to_use;
4205 buffer_info = &rx_ring->buffer_info[i];
4206 ps_page = &rx_ring->ps_page[i];
4207 ps_page_dma = &rx_ring->ps_page_dma[i];
4209 while (cleaned_count--) {
4210 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
4212 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
4213 if (j < adapter->rx_ps_pages) {
4214 if (likely(!ps_page->ps_page[j])) {
4215 ps_page->ps_page[j] =
4216 alloc_page(GFP_ATOMIC);
4217 if (unlikely(!ps_page->ps_page[j])) {
4218 adapter->alloc_rx_buff_failed++;
4221 ps_page_dma->ps_page_dma[j] =
4223 ps_page->ps_page[j],
4225 PCI_DMA_FROMDEVICE);
4227 /* Refresh the desc even if buffer_addrs didn't
4228 * change because each write-back erases
4231 rx_desc->read.buffer_addr[j+1] =
4232 cpu_to_le64(ps_page_dma->ps_page_dma[j]);
4234 rx_desc->read.buffer_addr[j+1] = ~0;
4237 skb = netdev_alloc_skb(netdev,
4238 adapter->rx_ps_bsize0 + NET_IP_ALIGN);
4240 if (unlikely(!skb)) {
4241 adapter->alloc_rx_buff_failed++;
4245 /* Make buffer alignment 2 beyond a 16 byte boundary
4246 * this will result in a 16 byte aligned IP header after
4247 * the 14 byte MAC header is removed
4249 skb_reserve(skb, NET_IP_ALIGN);
4251 buffer_info->skb = skb;
4252 buffer_info->length = adapter->rx_ps_bsize0;
4253 buffer_info->dma = pci_map_single(pdev, skb->data,
4254 adapter->rx_ps_bsize0,
4255 PCI_DMA_FROMDEVICE);
4257 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
4259 if (unlikely(++i == rx_ring->count)) i = 0;
4260 buffer_info = &rx_ring->buffer_info[i];
4261 ps_page = &rx_ring->ps_page[i];
4262 ps_page_dma = &rx_ring->ps_page_dma[i];
4266 if (likely(rx_ring->next_to_use != i)) {
4267 rx_ring->next_to_use = i;
4268 if (unlikely(i-- == 0)) i = (rx_ring->count - 1);
4270 /* Force memory writes to complete before letting h/w
4271 * know there are new descriptors to fetch. (Only
4272 * applicable for weak-ordered memory model archs,
4273 * such as IA-64). */
4275 /* Hardware increments by 16 bytes, but packet split
4276 * descriptors are 32 bytes...so we increment tail
4279 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt);
4284 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4289 e1000_smartspeed(struct e1000_adapter *adapter)
4291 uint16_t phy_status;
4294 if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
4295 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
4298 if (adapter->smartspeed == 0) {
4299 /* If Master/Slave config fault is asserted twice,
4300 * we assume back-to-back */
4301 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
4302 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4303 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
4304 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4305 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
4306 if (phy_ctrl & CR_1000T_MS_ENABLE) {
4307 phy_ctrl &= ~CR_1000T_MS_ENABLE;
4308 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
4310 adapter->smartspeed++;
4311 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
4312 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
4314 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4315 MII_CR_RESTART_AUTO_NEG);
4316 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
4321 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4322 /* If still no link, perhaps using 2/3 pair cable */
4323 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
4324 phy_ctrl |= CR_1000T_MS_ENABLE;
4325 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
4326 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
4327 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
4328 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4329 MII_CR_RESTART_AUTO_NEG);
4330 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
4333 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4334 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4335 adapter->smartspeed = 0;
4346 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4352 return e1000_mii_ioctl(netdev, ifr, cmd);
4366 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4368 struct e1000_adapter *adapter = netdev_priv(netdev);
4369 struct mii_ioctl_data *data = if_mii(ifr);
4373 unsigned long flags;
4375 if (adapter->hw.media_type != e1000_media_type_copper)
4380 data->phy_id = adapter->hw.phy_addr;
4383 if (!capable(CAP_NET_ADMIN))
4385 spin_lock_irqsave(&adapter->stats_lock, flags);
4386 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
4388 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4391 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4394 if (!capable(CAP_NET_ADMIN))
4396 if (data->reg_num & ~(0x1F))
4398 mii_reg = data->val_in;
4399 spin_lock_irqsave(&adapter->stats_lock, flags);
4400 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
4402 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4405 if (adapter->hw.media_type == e1000_media_type_copper) {
4406 switch (data->reg_num) {
4408 if (mii_reg & MII_CR_POWER_DOWN)
4410 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4411 adapter->hw.autoneg = 1;
4412 adapter->hw.autoneg_advertised = 0x2F;
4415 spddplx = SPEED_1000;
4416 else if (mii_reg & 0x2000)
4417 spddplx = SPEED_100;
4420 spddplx += (mii_reg & 0x100)
4423 retval = e1000_set_spd_dplx(adapter,
4426 spin_unlock_irqrestore(
4427 &adapter->stats_lock,
4432 if (netif_running(adapter->netdev))
4433 e1000_reinit_locked(adapter);
4435 e1000_reset(adapter);
4437 case M88E1000_PHY_SPEC_CTRL:
4438 case M88E1000_EXT_PHY_SPEC_CTRL:
4439 if (e1000_phy_reset(&adapter->hw)) {
4440 spin_unlock_irqrestore(
4441 &adapter->stats_lock, flags);
4447 switch (data->reg_num) {
4449 if (mii_reg & MII_CR_POWER_DOWN)
4451 if (netif_running(adapter->netdev))
4452 e1000_reinit_locked(adapter);
4454 e1000_reset(adapter);
4458 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4463 return E1000_SUCCESS;
4467 e1000_pci_set_mwi(struct e1000_hw *hw)
4469 struct e1000_adapter *adapter = hw->back;
4470 int ret_val = pci_set_mwi(adapter->pdev);
4473 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4477 e1000_pci_clear_mwi(struct e1000_hw *hw)
4479 struct e1000_adapter *adapter = hw->back;
4481 pci_clear_mwi(adapter->pdev);
4485 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4487 struct e1000_adapter *adapter = hw->back;
4489 pci_read_config_word(adapter->pdev, reg, value);
4493 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4495 struct e1000_adapter *adapter = hw->back;
4497 pci_write_config_word(adapter->pdev, reg, *value);
4501 e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4503 struct e1000_adapter *adapter = hw->back;
4504 uint16_t cap_offset;
4506 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
4508 return -E1000_ERR_CONFIG;
4510 pci_read_config_word(adapter->pdev, cap_offset + reg, value);
4512 return E1000_SUCCESS;
4516 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
4522 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
4524 struct e1000_adapter *adapter = netdev_priv(netdev);
4525 uint32_t ctrl, rctl;
4527 e1000_irq_disable(adapter);
4528 adapter->vlgrp = grp;
4531 /* enable VLAN tag insert/strip */
4532 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4533 ctrl |= E1000_CTRL_VME;
4534 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4536 if (adapter->hw.mac_type != e1000_ich8lan) {
4537 /* enable VLAN receive filtering */
4538 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4539 rctl |= E1000_RCTL_VFE;
4540 rctl &= ~E1000_RCTL_CFIEN;
4541 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4542 e1000_update_mng_vlan(adapter);
4545 /* disable VLAN tag insert/strip */
4546 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4547 ctrl &= ~E1000_CTRL_VME;
4548 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4550 if (adapter->hw.mac_type != e1000_ich8lan) {
4551 /* disable VLAN filtering */
4552 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4553 rctl &= ~E1000_RCTL_VFE;
4554 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4555 if (adapter->mng_vlan_id !=
4556 (uint16_t)E1000_MNG_VLAN_NONE) {
4557 e1000_vlan_rx_kill_vid(netdev,
4558 adapter->mng_vlan_id);
4559 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4564 e1000_irq_enable(adapter);
4568 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
4570 struct e1000_adapter *adapter = netdev_priv(netdev);
4571 uint32_t vfta, index;
4573 if ((adapter->hw.mng_cookie.status &
4574 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4575 (vid == adapter->mng_vlan_id))
4577 /* add VID to filter table */
4578 index = (vid >> 5) & 0x7F;
4579 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4580 vfta |= (1 << (vid & 0x1F));
4581 e1000_write_vfta(&adapter->hw, index, vfta);
4585 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
4587 struct e1000_adapter *adapter = netdev_priv(netdev);
4588 uint32_t vfta, index;
4590 e1000_irq_disable(adapter);
4593 adapter->vlgrp->vlan_devices[vid] = NULL;
4595 e1000_irq_enable(adapter);
4597 if ((adapter->hw.mng_cookie.status &
4598 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4599 (vid == adapter->mng_vlan_id)) {
4600 /* release control to f/w */
4601 e1000_release_hw_control(adapter);
4605 /* remove VID from filter table */
4606 index = (vid >> 5) & 0x7F;
4607 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4608 vfta &= ~(1 << (vid & 0x1F));
4609 e1000_write_vfta(&adapter->hw, index, vfta);
4613 e1000_restore_vlan(struct e1000_adapter *adapter)
4615 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4617 if (adapter->vlgrp) {
4619 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4620 if (!adapter->vlgrp->vlan_devices[vid])
4622 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4628 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
4630 adapter->hw.autoneg = 0;
4632 /* Fiber NICs only allow 1000 gbps Full duplex */
4633 if ((adapter->hw.media_type == e1000_media_type_fiber) &&
4634 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4635 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4640 case SPEED_10 + DUPLEX_HALF:
4641 adapter->hw.forced_speed_duplex = e1000_10_half;
4643 case SPEED_10 + DUPLEX_FULL:
4644 adapter->hw.forced_speed_duplex = e1000_10_full;
4646 case SPEED_100 + DUPLEX_HALF:
4647 adapter->hw.forced_speed_duplex = e1000_100_half;
4649 case SPEED_100 + DUPLEX_FULL:
4650 adapter->hw.forced_speed_duplex = e1000_100_full;
4652 case SPEED_1000 + DUPLEX_FULL:
4653 adapter->hw.autoneg = 1;
4654 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
4656 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4658 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4665 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4666 * bus we're on (PCI(X) vs. PCI-E)
4668 #define PCIE_CONFIG_SPACE_LEN 256
4669 #define PCI_CONFIG_SPACE_LEN 64
4671 e1000_pci_save_state(struct e1000_adapter *adapter)
4673 struct pci_dev *dev = adapter->pdev;
4677 if (adapter->hw.mac_type >= e1000_82571)
4678 size = PCIE_CONFIG_SPACE_LEN;
4680 size = PCI_CONFIG_SPACE_LEN;
4682 WARN_ON(adapter->config_space != NULL);
4684 adapter->config_space = kmalloc(size, GFP_KERNEL);
4685 if (!adapter->config_space) {
4686 DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size);
4689 for (i = 0; i < (size / 4); i++)
4690 pci_read_config_dword(dev, i * 4, &adapter->config_space[i]);
4695 e1000_pci_restore_state(struct e1000_adapter *adapter)
4697 struct pci_dev *dev = adapter->pdev;
4701 if (adapter->config_space == NULL)
4704 if (adapter->hw.mac_type >= e1000_82571)
4705 size = PCIE_CONFIG_SPACE_LEN;
4707 size = PCI_CONFIG_SPACE_LEN;
4708 for (i = 0; i < (size / 4); i++)
4709 pci_write_config_dword(dev, i * 4, adapter->config_space[i]);
4710 kfree(adapter->config_space);
4711 adapter->config_space = NULL;
4714 #endif /* CONFIG_PM */
4717 e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4719 struct net_device *netdev = pci_get_drvdata(pdev);
4720 struct e1000_adapter *adapter = netdev_priv(netdev);
4721 uint32_t ctrl, ctrl_ext, rctl, manc, status;
4722 uint32_t wufc = adapter->wol;
4727 netif_device_detach(netdev);
4729 if (netif_running(netdev)) {
4730 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
4731 e1000_down(adapter);
4735 /* Implement our own version of pci_save_state(pdev) because pci-
4736 * express adapters have 256-byte config spaces. */
4737 retval = e1000_pci_save_state(adapter);
4742 status = E1000_READ_REG(&adapter->hw, STATUS);
4743 if (status & E1000_STATUS_LU)
4744 wufc &= ~E1000_WUFC_LNKC;
4747 e1000_setup_rctl(adapter);
4748 e1000_set_multi(netdev);
4750 /* turn on all-multi mode if wake on multicast is enabled */
4751 if (wufc & E1000_WUFC_MC) {
4752 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4753 rctl |= E1000_RCTL_MPE;
4754 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4757 if (adapter->hw.mac_type >= e1000_82540) {
4758 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4759 /* advertise wake from D3Cold */
4760 #define E1000_CTRL_ADVD3WUC 0x00100000
4761 /* phy power management enable */
4762 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4763 ctrl |= E1000_CTRL_ADVD3WUC |
4764 E1000_CTRL_EN_PHY_PWR_MGMT;
4765 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4768 if (adapter->hw.media_type == e1000_media_type_fiber ||
4769 adapter->hw.media_type == e1000_media_type_internal_serdes) {
4770 /* keep the laser running in D3 */
4771 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
4772 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4773 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
4776 /* Allow time for pending master requests to run */
4777 e1000_disable_pciex_master(&adapter->hw);
4779 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
4780 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
4781 pci_enable_wake(pdev, PCI_D3hot, 1);
4782 pci_enable_wake(pdev, PCI_D3cold, 1);
4784 E1000_WRITE_REG(&adapter->hw, WUC, 0);
4785 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
4786 pci_enable_wake(pdev, PCI_D3hot, 0);
4787 pci_enable_wake(pdev, PCI_D3cold, 0);
4790 if (adapter->hw.mac_type >= e1000_82540 &&
4791 adapter->hw.mac_type < e1000_82571 &&
4792 adapter->hw.media_type == e1000_media_type_copper) {
4793 manc = E1000_READ_REG(&adapter->hw, MANC);
4794 if (manc & E1000_MANC_SMBUS_EN) {
4795 manc |= E1000_MANC_ARP_EN;
4796 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4797 pci_enable_wake(pdev, PCI_D3hot, 1);
4798 pci_enable_wake(pdev, PCI_D3cold, 1);
4802 if (adapter->hw.phy_type == e1000_phy_igp_3)
4803 e1000_phy_powerdown_workaround(&adapter->hw);
4805 if (netif_running(netdev))
4806 e1000_free_irq(adapter);
4808 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4809 * would have already happened in close and is redundant. */
4810 e1000_release_hw_control(adapter);
4812 pci_disable_device(pdev);
4814 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4821 e1000_resume(struct pci_dev *pdev)
4823 struct net_device *netdev = pci_get_drvdata(pdev);
4824 struct e1000_adapter *adapter = netdev_priv(netdev);
4827 pci_set_power_state(pdev, PCI_D0);
4828 e1000_pci_restore_state(adapter);
4829 if ((err = pci_enable_device(pdev))) {
4830 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
4833 pci_set_master(pdev);
4835 pci_enable_wake(pdev, PCI_D3hot, 0);
4836 pci_enable_wake(pdev, PCI_D3cold, 0);
4838 if (netif_running(netdev) && (err = e1000_request_irq(adapter)))
4841 e1000_power_up_phy(adapter);
4842 e1000_reset(adapter);
4843 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
4845 if (netif_running(netdev))
4848 netif_device_attach(netdev);
4850 if (adapter->hw.mac_type >= e1000_82540 &&
4851 adapter->hw.mac_type < e1000_82571 &&
4852 adapter->hw.media_type == e1000_media_type_copper) {
4853 manc = E1000_READ_REG(&adapter->hw, MANC);
4854 manc &= ~(E1000_MANC_ARP_EN);
4855 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4858 /* If the controller is 82573 and f/w is AMT, do not set
4859 * DRV_LOAD until the interface is up. For all other cases,
4860 * let the f/w know that the h/w is now under the control
4862 if (adapter->hw.mac_type != e1000_82573 ||
4863 !e1000_check_mng_mode(&adapter->hw))
4864 e1000_get_hw_control(adapter);
4870 static void e1000_shutdown(struct pci_dev *pdev)
4872 e1000_suspend(pdev, PMSG_SUSPEND);
4875 #ifdef CONFIG_NET_POLL_CONTROLLER
4877 * Polling 'interrupt' - used by things like netconsole to send skbs
4878 * without having to re-enable interrupts. It's not called while
4879 * the interrupt routine is executing.
4882 e1000_netpoll(struct net_device *netdev)
4884 struct e1000_adapter *adapter = netdev_priv(netdev);
4886 disable_irq(adapter->pdev->irq);
4887 e1000_intr(adapter->pdev->irq, netdev);
4888 e1000_clean_tx_irq(adapter, adapter->tx_ring);
4889 #ifndef CONFIG_E1000_NAPI
4890 adapter->clean_rx(adapter, adapter->rx_ring);
4892 enable_irq(adapter->pdev->irq);
4897 * e1000_io_error_detected - called when PCI error is detected
4898 * @pdev: Pointer to PCI device
4899 * @state: The current pci conneection state
4901 * This function is called after a PCI bus error affecting
4902 * this device has been detected.
4904 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
4906 struct net_device *netdev = pci_get_drvdata(pdev);
4907 struct e1000_adapter *adapter = netdev->priv;
4909 netif_device_detach(netdev);
4911 if (netif_running(netdev))
4912 e1000_down(adapter);
4913 pci_disable_device(pdev);
4915 /* Request a slot slot reset. */
4916 return PCI_ERS_RESULT_NEED_RESET;
4920 * e1000_io_slot_reset - called after the pci bus has been reset.
4921 * @pdev: Pointer to PCI device
4923 * Restart the card from scratch, as if from a cold-boot. Implementation
4924 * resembles the first-half of the e1000_resume routine.
4926 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4928 struct net_device *netdev = pci_get_drvdata(pdev);
4929 struct e1000_adapter *adapter = netdev->priv;
4931 if (pci_enable_device(pdev)) {
4932 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
4933 return PCI_ERS_RESULT_DISCONNECT;
4935 pci_set_master(pdev);
4937 pci_enable_wake(pdev, PCI_D3hot, 0);
4938 pci_enable_wake(pdev, PCI_D3cold, 0);
4940 e1000_reset(adapter);
4941 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
4943 return PCI_ERS_RESULT_RECOVERED;
4947 * e1000_io_resume - called when traffic can start flowing again.
4948 * @pdev: Pointer to PCI device
4950 * This callback is called when the error recovery driver tells us that
4951 * its OK to resume normal operation. Implementation resembles the
4952 * second-half of the e1000_resume routine.
4954 static void e1000_io_resume(struct pci_dev *pdev)
4956 struct net_device *netdev = pci_get_drvdata(pdev);
4957 struct e1000_adapter *adapter = netdev->priv;
4958 uint32_t manc, swsm;
4960 if (netif_running(netdev)) {
4961 if (e1000_up(adapter)) {
4962 printk("e1000: can't bring device back up after reset\n");
4967 netif_device_attach(netdev);
4969 if (adapter->hw.mac_type >= e1000_82540 &&
4970 adapter->hw.mac_type < e1000_82571 &&
4971 adapter->hw.media_type == e1000_media_type_copper) {
4972 manc = E1000_READ_REG(&adapter->hw, MANC);
4973 manc &= ~(E1000_MANC_ARP_EN);
4974 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4977 switch (adapter->hw.mac_type) {
4979 swsm = E1000_READ_REG(&adapter->hw, SWSM);
4980 E1000_WRITE_REG(&adapter->hw, SWSM,
4981 swsm | E1000_SWSM_DRV_LOAD);
4987 if (netif_running(netdev))
4988 mod_timer(&adapter->watchdog_timer, jiffies);