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 *******************************************************************************/
30 #include <net/ip6_checksum.h>
32 char e1000_driver_name[] = "e1000";
33 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
34 #ifndef CONFIG_E1000_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "7.3.15-k2"DRIVERNAPI
40 char e1000_driver_version[] = DRV_VERSION;
41 static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* e1000_pci_tbl - PCI Device ID Table
45 * Last entry must be all 0s
48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
50 static struct pci_device_id e1000_pci_tbl[] = {
51 INTEL_E1000_ETHERNET_DEVICE(0x1000),
52 INTEL_E1000_ETHERNET_DEVICE(0x1001),
53 INTEL_E1000_ETHERNET_DEVICE(0x1004),
54 INTEL_E1000_ETHERNET_DEVICE(0x1008),
55 INTEL_E1000_ETHERNET_DEVICE(0x1009),
56 INTEL_E1000_ETHERNET_DEVICE(0x100C),
57 INTEL_E1000_ETHERNET_DEVICE(0x100D),
58 INTEL_E1000_ETHERNET_DEVICE(0x100E),
59 INTEL_E1000_ETHERNET_DEVICE(0x100F),
60 INTEL_E1000_ETHERNET_DEVICE(0x1010),
61 INTEL_E1000_ETHERNET_DEVICE(0x1011),
62 INTEL_E1000_ETHERNET_DEVICE(0x1012),
63 INTEL_E1000_ETHERNET_DEVICE(0x1013),
64 INTEL_E1000_ETHERNET_DEVICE(0x1014),
65 INTEL_E1000_ETHERNET_DEVICE(0x1015),
66 INTEL_E1000_ETHERNET_DEVICE(0x1016),
67 INTEL_E1000_ETHERNET_DEVICE(0x1017),
68 INTEL_E1000_ETHERNET_DEVICE(0x1018),
69 INTEL_E1000_ETHERNET_DEVICE(0x1019),
70 INTEL_E1000_ETHERNET_DEVICE(0x101A),
71 INTEL_E1000_ETHERNET_DEVICE(0x101D),
72 INTEL_E1000_ETHERNET_DEVICE(0x101E),
73 INTEL_E1000_ETHERNET_DEVICE(0x1026),
74 INTEL_E1000_ETHERNET_DEVICE(0x1027),
75 INTEL_E1000_ETHERNET_DEVICE(0x1028),
76 INTEL_E1000_ETHERNET_DEVICE(0x1049),
77 INTEL_E1000_ETHERNET_DEVICE(0x104A),
78 INTEL_E1000_ETHERNET_DEVICE(0x104B),
79 INTEL_E1000_ETHERNET_DEVICE(0x104C),
80 INTEL_E1000_ETHERNET_DEVICE(0x104D),
81 INTEL_E1000_ETHERNET_DEVICE(0x105E),
82 INTEL_E1000_ETHERNET_DEVICE(0x105F),
83 INTEL_E1000_ETHERNET_DEVICE(0x1060),
84 INTEL_E1000_ETHERNET_DEVICE(0x1075),
85 INTEL_E1000_ETHERNET_DEVICE(0x1076),
86 INTEL_E1000_ETHERNET_DEVICE(0x1077),
87 INTEL_E1000_ETHERNET_DEVICE(0x1078),
88 INTEL_E1000_ETHERNET_DEVICE(0x1079),
89 INTEL_E1000_ETHERNET_DEVICE(0x107A),
90 INTEL_E1000_ETHERNET_DEVICE(0x107B),
91 INTEL_E1000_ETHERNET_DEVICE(0x107C),
92 INTEL_E1000_ETHERNET_DEVICE(0x107D),
93 INTEL_E1000_ETHERNET_DEVICE(0x107E),
94 INTEL_E1000_ETHERNET_DEVICE(0x107F),
95 INTEL_E1000_ETHERNET_DEVICE(0x108A),
96 INTEL_E1000_ETHERNET_DEVICE(0x108B),
97 INTEL_E1000_ETHERNET_DEVICE(0x108C),
98 INTEL_E1000_ETHERNET_DEVICE(0x1096),
99 INTEL_E1000_ETHERNET_DEVICE(0x1098),
100 INTEL_E1000_ETHERNET_DEVICE(0x1099),
101 INTEL_E1000_ETHERNET_DEVICE(0x109A),
102 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
104 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
106 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
107 INTEL_E1000_ETHERNET_DEVICE(0x10BC),
108 INTEL_E1000_ETHERNET_DEVICE(0x10C4),
109 INTEL_E1000_ETHERNET_DEVICE(0x10C5),
110 /* required last entry */
114 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
116 int e1000_up(struct e1000_adapter *adapter);
117 void e1000_down(struct e1000_adapter *adapter);
118 void e1000_reinit_locked(struct e1000_adapter *adapter);
119 void e1000_reset(struct e1000_adapter *adapter);
120 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
121 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
122 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
123 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
124 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
125 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
126 struct e1000_tx_ring *txdr);
127 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
128 struct e1000_rx_ring *rxdr);
129 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
130 struct e1000_tx_ring *tx_ring);
131 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
132 struct e1000_rx_ring *rx_ring);
133 void e1000_update_stats(struct e1000_adapter *adapter);
135 static int e1000_init_module(void);
136 static void e1000_exit_module(void);
137 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
138 static void __devexit e1000_remove(struct pci_dev *pdev);
139 static int e1000_alloc_queues(struct e1000_adapter *adapter);
140 static int e1000_sw_init(struct e1000_adapter *adapter);
141 static int e1000_open(struct net_device *netdev);
142 static int e1000_close(struct net_device *netdev);
143 static void e1000_configure_tx(struct e1000_adapter *adapter);
144 static void e1000_configure_rx(struct e1000_adapter *adapter);
145 static void e1000_setup_rctl(struct e1000_adapter *adapter);
146 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
147 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
148 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
149 struct e1000_tx_ring *tx_ring);
150 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
151 struct e1000_rx_ring *rx_ring);
152 static void e1000_set_multi(struct net_device *netdev);
153 static void e1000_update_phy_info(unsigned long data);
154 static void e1000_watchdog(unsigned long data);
155 static void e1000_82547_tx_fifo_stall(unsigned long data);
156 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
157 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
158 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
159 static int e1000_set_mac(struct net_device *netdev, void *p);
160 static irqreturn_t e1000_intr(int irq, void *data);
161 #ifdef CONFIG_PCI_MSI
162 static irqreturn_t e1000_intr_msi(int irq, void *data);
164 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter,
165 struct e1000_tx_ring *tx_ring);
166 #ifdef CONFIG_E1000_NAPI
167 static int e1000_clean(struct net_device *poll_dev, int *budget);
168 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
169 struct e1000_rx_ring *rx_ring,
170 int *work_done, int work_to_do);
171 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
172 struct e1000_rx_ring *rx_ring,
173 int *work_done, int work_to_do);
175 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
176 struct e1000_rx_ring *rx_ring);
177 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
178 struct e1000_rx_ring *rx_ring);
180 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
181 struct e1000_rx_ring *rx_ring,
183 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
184 struct e1000_rx_ring *rx_ring,
186 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
187 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
189 void e1000_set_ethtool_ops(struct net_device *netdev);
190 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
191 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
192 static void e1000_tx_timeout(struct net_device *dev);
193 static void e1000_reset_task(struct net_device *dev);
194 static void e1000_smartspeed(struct e1000_adapter *adapter);
195 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
196 struct sk_buff *skb);
198 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
199 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
200 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
201 static void e1000_restore_vlan(struct e1000_adapter *adapter);
203 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
205 static int e1000_resume(struct pci_dev *pdev);
207 static void e1000_shutdown(struct pci_dev *pdev);
209 #ifdef CONFIG_NET_POLL_CONTROLLER
210 /* for netdump / net console */
211 static void e1000_netpoll (struct net_device *netdev);
214 extern void e1000_check_options(struct e1000_adapter *adapter);
216 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
217 pci_channel_state_t state);
218 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
219 static void e1000_io_resume(struct pci_dev *pdev);
221 static struct pci_error_handlers e1000_err_handler = {
222 .error_detected = e1000_io_error_detected,
223 .slot_reset = e1000_io_slot_reset,
224 .resume = e1000_io_resume,
227 static struct pci_driver e1000_driver = {
228 .name = e1000_driver_name,
229 .id_table = e1000_pci_tbl,
230 .probe = e1000_probe,
231 .remove = __devexit_p(e1000_remove),
233 /* Power Managment Hooks */
234 .suspend = e1000_suspend,
235 .resume = e1000_resume,
237 .shutdown = e1000_shutdown,
238 .err_handler = &e1000_err_handler
241 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
242 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
243 MODULE_LICENSE("GPL");
244 MODULE_VERSION(DRV_VERSION);
246 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
247 module_param(debug, int, 0);
248 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
251 * e1000_init_module - Driver Registration Routine
253 * e1000_init_module is the first routine called when the driver is
254 * loaded. All it does is register with the PCI subsystem.
258 e1000_init_module(void)
261 printk(KERN_INFO "%s - version %s\n",
262 e1000_driver_string, e1000_driver_version);
264 printk(KERN_INFO "%s\n", e1000_copyright);
266 ret = pci_register_driver(&e1000_driver);
271 module_init(e1000_init_module);
274 * e1000_exit_module - Driver Exit Cleanup Routine
276 * e1000_exit_module is called just before the driver is removed
281 e1000_exit_module(void)
283 pci_unregister_driver(&e1000_driver);
286 module_exit(e1000_exit_module);
288 static int e1000_request_irq(struct e1000_adapter *adapter)
290 struct net_device *netdev = adapter->netdev;
294 #ifdef CONFIG_PCI_MSI
295 if (adapter->hw.mac_type >= e1000_82571) {
296 adapter->have_msi = TRUE;
297 if ((err = pci_enable_msi(adapter->pdev))) {
299 "Unable to allocate MSI interrupt Error: %d\n", err);
300 adapter->have_msi = FALSE;
303 if (adapter->have_msi) {
304 flags &= ~IRQF_SHARED;
305 err = request_irq(adapter->pdev->irq, &e1000_intr_msi, flags,
306 netdev->name, netdev);
309 "Unable to allocate interrupt Error: %d\n", err);
312 if ((err = request_irq(adapter->pdev->irq, &e1000_intr, flags,
313 netdev->name, netdev)))
315 "Unable to allocate interrupt Error: %d\n", err);
320 static void e1000_free_irq(struct e1000_adapter *adapter)
322 struct net_device *netdev = adapter->netdev;
324 free_irq(adapter->pdev->irq, netdev);
326 #ifdef CONFIG_PCI_MSI
327 if (adapter->have_msi)
328 pci_disable_msi(adapter->pdev);
333 * e1000_irq_disable - Mask off interrupt generation on the NIC
334 * @adapter: board private structure
338 e1000_irq_disable(struct e1000_adapter *adapter)
340 atomic_inc(&adapter->irq_sem);
341 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
342 E1000_WRITE_FLUSH(&adapter->hw);
343 synchronize_irq(adapter->pdev->irq);
347 * e1000_irq_enable - Enable default interrupt generation settings
348 * @adapter: board private structure
352 e1000_irq_enable(struct e1000_adapter *adapter)
354 if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
355 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
356 E1000_WRITE_FLUSH(&adapter->hw);
361 e1000_update_mng_vlan(struct e1000_adapter *adapter)
363 struct net_device *netdev = adapter->netdev;
364 uint16_t vid = adapter->hw.mng_cookie.vlan_id;
365 uint16_t old_vid = adapter->mng_vlan_id;
366 if (adapter->vlgrp) {
367 if (!adapter->vlgrp->vlan_devices[vid]) {
368 if (adapter->hw.mng_cookie.status &
369 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
370 e1000_vlan_rx_add_vid(netdev, vid);
371 adapter->mng_vlan_id = vid;
373 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
375 if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
377 !adapter->vlgrp->vlan_devices[old_vid])
378 e1000_vlan_rx_kill_vid(netdev, old_vid);
380 adapter->mng_vlan_id = vid;
385 * e1000_release_hw_control - release control of the h/w to f/w
386 * @adapter: address of board private structure
388 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
389 * For ASF and Pass Through versions of f/w this means that the
390 * driver is no longer loaded. For AMT version (only with 82573) i
391 * of the f/w this means that the network i/f is closed.
396 e1000_release_hw_control(struct e1000_adapter *adapter)
402 /* Let firmware taken over control of h/w */
403 switch (adapter->hw.mac_type) {
406 case e1000_80003es2lan:
407 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
408 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
409 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
412 swsm = E1000_READ_REG(&adapter->hw, SWSM);
413 E1000_WRITE_REG(&adapter->hw, SWSM,
414 swsm & ~E1000_SWSM_DRV_LOAD);
416 extcnf = E1000_READ_REG(&adapter->hw, CTRL_EXT);
417 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
418 extcnf & ~E1000_CTRL_EXT_DRV_LOAD);
426 * e1000_get_hw_control - get control of the h/w from f/w
427 * @adapter: address of board private structure
429 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
430 * For ASF and Pass Through versions of f/w this means that
431 * the driver is loaded. For AMT version (only with 82573)
432 * of the f/w this means that the network i/f is open.
437 e1000_get_hw_control(struct e1000_adapter *adapter)
443 /* Let firmware know the driver has taken over */
444 switch (adapter->hw.mac_type) {
447 case e1000_80003es2lan:
448 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
449 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
450 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
453 swsm = E1000_READ_REG(&adapter->hw, SWSM);
454 E1000_WRITE_REG(&adapter->hw, SWSM,
455 swsm | E1000_SWSM_DRV_LOAD);
458 extcnf = E1000_READ_REG(&adapter->hw, EXTCNF_CTRL);
459 E1000_WRITE_REG(&adapter->hw, EXTCNF_CTRL,
460 extcnf | E1000_EXTCNF_CTRL_SWFLAG);
468 e1000_up(struct e1000_adapter *adapter)
470 struct net_device *netdev = adapter->netdev;
473 /* hardware has been reset, we need to reload some things */
475 e1000_set_multi(netdev);
477 e1000_restore_vlan(adapter);
479 e1000_configure_tx(adapter);
480 e1000_setup_rctl(adapter);
481 e1000_configure_rx(adapter);
482 /* call E1000_DESC_UNUSED which always leaves
483 * at least 1 descriptor unused to make sure
484 * next_to_use != next_to_clean */
485 for (i = 0; i < adapter->num_rx_queues; i++) {
486 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
487 adapter->alloc_rx_buf(adapter, ring,
488 E1000_DESC_UNUSED(ring));
491 adapter->tx_queue_len = netdev->tx_queue_len;
493 #ifdef CONFIG_E1000_NAPI
494 netif_poll_enable(netdev);
496 e1000_irq_enable(adapter);
498 clear_bit(__E1000_DOWN, &adapter->flags);
500 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
505 * e1000_power_up_phy - restore link in case the phy was powered down
506 * @adapter: address of board private structure
508 * The phy may be powered down to save power and turn off link when the
509 * driver is unloaded and wake on lan is not enabled (among others)
510 * *** this routine MUST be followed by a call to e1000_reset ***
514 void e1000_power_up_phy(struct e1000_adapter *adapter)
516 uint16_t mii_reg = 0;
518 /* Just clear the power down bit to wake the phy back up */
519 if (adapter->hw.media_type == e1000_media_type_copper) {
520 /* according to the manual, the phy will retain its
521 * settings across a power-down/up cycle */
522 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
523 mii_reg &= ~MII_CR_POWER_DOWN;
524 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
528 static void e1000_power_down_phy(struct e1000_adapter *adapter)
530 /* Power down the PHY so no link is implied when interface is down *
531 * The PHY cannot be powered down if any of the following is TRUE *
534 * (c) SoL/IDER session is active */
535 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&
536 adapter->hw.media_type == e1000_media_type_copper) {
537 uint16_t mii_reg = 0;
539 switch (adapter->hw.mac_type) {
542 case e1000_82545_rev_3:
544 case e1000_82546_rev_3:
546 case e1000_82541_rev_2:
548 case e1000_82547_rev_2:
549 if (E1000_READ_REG(&adapter->hw, MANC) &
556 case e1000_80003es2lan:
558 if (e1000_check_mng_mode(&adapter->hw) ||
559 e1000_check_phy_reset_block(&adapter->hw))
565 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
566 mii_reg |= MII_CR_POWER_DOWN;
567 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
575 e1000_down(struct e1000_adapter *adapter)
577 struct net_device *netdev = adapter->netdev;
579 /* signal that we're down so the interrupt handler does not
580 * reschedule our watchdog timer */
581 set_bit(__E1000_DOWN, &adapter->flags);
583 e1000_irq_disable(adapter);
585 del_timer_sync(&adapter->tx_fifo_stall_timer);
586 del_timer_sync(&adapter->watchdog_timer);
587 del_timer_sync(&adapter->phy_info_timer);
589 #ifdef CONFIG_E1000_NAPI
590 netif_poll_disable(netdev);
592 netdev->tx_queue_len = adapter->tx_queue_len;
593 adapter->link_speed = 0;
594 adapter->link_duplex = 0;
595 netif_carrier_off(netdev);
596 netif_stop_queue(netdev);
598 e1000_reset(adapter);
599 e1000_clean_all_tx_rings(adapter);
600 e1000_clean_all_rx_rings(adapter);
604 e1000_reinit_locked(struct e1000_adapter *adapter)
606 WARN_ON(in_interrupt());
607 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
611 clear_bit(__E1000_RESETTING, &adapter->flags);
615 e1000_reset(struct e1000_adapter *adapter)
618 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
620 /* Repartition Pba for greater than 9k mtu
621 * To take effect CTRL.RST is required.
624 switch (adapter->hw.mac_type) {
626 case e1000_82547_rev_2:
631 case e1000_80003es2lan:
645 if ((adapter->hw.mac_type != e1000_82573) &&
646 (adapter->netdev->mtu > E1000_RXBUFFER_8192))
647 pba -= 8; /* allocate more FIFO for Tx */
650 if (adapter->hw.mac_type == e1000_82547) {
651 adapter->tx_fifo_head = 0;
652 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
653 adapter->tx_fifo_size =
654 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
655 atomic_set(&adapter->tx_fifo_stall, 0);
658 E1000_WRITE_REG(&adapter->hw, PBA, pba);
660 /* flow control settings */
661 /* Set the FC high water mark to 90% of the FIFO size.
662 * Required to clear last 3 LSB */
663 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
664 /* We can't use 90% on small FIFOs because the remainder
665 * would be less than 1 full frame. In this case, we size
666 * it to allow at least a full frame above the high water
668 if (pba < E1000_PBA_16K)
669 fc_high_water_mark = (pba * 1024) - 1600;
671 adapter->hw.fc_high_water = fc_high_water_mark;
672 adapter->hw.fc_low_water = fc_high_water_mark - 8;
673 if (adapter->hw.mac_type == e1000_80003es2lan)
674 adapter->hw.fc_pause_time = 0xFFFF;
676 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
677 adapter->hw.fc_send_xon = 1;
678 adapter->hw.fc = adapter->hw.original_fc;
680 /* Allow time for pending master requests to run */
681 e1000_reset_hw(&adapter->hw);
682 if (adapter->hw.mac_type >= e1000_82544)
683 E1000_WRITE_REG(&adapter->hw, WUC, 0);
685 if (e1000_init_hw(&adapter->hw))
686 DPRINTK(PROBE, ERR, "Hardware Error\n");
687 e1000_update_mng_vlan(adapter);
688 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
689 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
691 e1000_reset_adaptive(&adapter->hw);
692 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
694 if (!adapter->smart_power_down &&
695 (adapter->hw.mac_type == e1000_82571 ||
696 adapter->hw.mac_type == e1000_82572)) {
697 uint16_t phy_data = 0;
698 /* speed up time to link by disabling smart power down, ignore
699 * the return value of this function because there is nothing
700 * different we would do if it failed */
701 e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
703 phy_data &= ~IGP02E1000_PM_SPD;
704 e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
708 if ((adapter->en_mng_pt) &&
709 (adapter->hw.mac_type >= e1000_82540) &&
710 (adapter->hw.mac_type < e1000_82571) &&
711 (adapter->hw.media_type == e1000_media_type_copper)) {
712 manc = E1000_READ_REG(&adapter->hw, MANC);
713 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
714 E1000_WRITE_REG(&adapter->hw, MANC, manc);
719 * e1000_probe - Device Initialization Routine
720 * @pdev: PCI device information struct
721 * @ent: entry in e1000_pci_tbl
723 * Returns 0 on success, negative on failure
725 * e1000_probe initializes an adapter identified by a pci_dev structure.
726 * The OS initialization, configuring of the adapter private structure,
727 * and a hardware reset occur.
731 e1000_probe(struct pci_dev *pdev,
732 const struct pci_device_id *ent)
734 struct net_device *netdev;
735 struct e1000_adapter *adapter;
736 unsigned long mmio_start, mmio_len;
737 unsigned long flash_start, flash_len;
739 static int cards_found = 0;
740 static int global_quad_port_a = 0; /* global ksp3 port a indication */
741 int i, err, pci_using_dac;
742 uint16_t eeprom_data = 0;
743 uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
744 if ((err = pci_enable_device(pdev)))
747 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
748 !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
751 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) &&
752 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
753 E1000_ERR("No usable DMA configuration, aborting\n");
759 if ((err = pci_request_regions(pdev, e1000_driver_name)))
762 pci_set_master(pdev);
765 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
767 goto err_alloc_etherdev;
769 SET_MODULE_OWNER(netdev);
770 SET_NETDEV_DEV(netdev, &pdev->dev);
772 pci_set_drvdata(pdev, netdev);
773 adapter = netdev_priv(netdev);
774 adapter->netdev = netdev;
775 adapter->pdev = pdev;
776 adapter->hw.back = adapter;
777 adapter->msg_enable = (1 << debug) - 1;
779 mmio_start = pci_resource_start(pdev, BAR_0);
780 mmio_len = pci_resource_len(pdev, BAR_0);
783 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
784 if (!adapter->hw.hw_addr)
787 for (i = BAR_1; i <= BAR_5; i++) {
788 if (pci_resource_len(pdev, i) == 0)
790 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
791 adapter->hw.io_base = pci_resource_start(pdev, i);
796 netdev->open = &e1000_open;
797 netdev->stop = &e1000_close;
798 netdev->hard_start_xmit = &e1000_xmit_frame;
799 netdev->get_stats = &e1000_get_stats;
800 netdev->set_multicast_list = &e1000_set_multi;
801 netdev->set_mac_address = &e1000_set_mac;
802 netdev->change_mtu = &e1000_change_mtu;
803 netdev->do_ioctl = &e1000_ioctl;
804 e1000_set_ethtool_ops(netdev);
805 netdev->tx_timeout = &e1000_tx_timeout;
806 netdev->watchdog_timeo = 5 * HZ;
807 #ifdef CONFIG_E1000_NAPI
808 netdev->poll = &e1000_clean;
811 netdev->vlan_rx_register = e1000_vlan_rx_register;
812 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
813 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
814 #ifdef CONFIG_NET_POLL_CONTROLLER
815 netdev->poll_controller = e1000_netpoll;
817 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
819 netdev->mem_start = mmio_start;
820 netdev->mem_end = mmio_start + mmio_len;
821 netdev->base_addr = adapter->hw.io_base;
823 adapter->bd_number = cards_found;
825 /* setup the private structure */
827 if ((err = e1000_sw_init(adapter)))
831 /* Flash BAR mapping must happen after e1000_sw_init
832 * because it depends on mac_type */
833 if ((adapter->hw.mac_type == e1000_ich8lan) &&
834 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
835 flash_start = pci_resource_start(pdev, 1);
836 flash_len = pci_resource_len(pdev, 1);
837 adapter->hw.flash_address = ioremap(flash_start, flash_len);
838 if (!adapter->hw.flash_address)
842 if (e1000_check_phy_reset_block(&adapter->hw))
843 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
845 if (adapter->hw.mac_type >= e1000_82543) {
846 netdev->features = NETIF_F_SG |
850 NETIF_F_HW_VLAN_FILTER;
851 if (adapter->hw.mac_type == e1000_ich8lan)
852 netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
856 if ((adapter->hw.mac_type >= e1000_82544) &&
857 (adapter->hw.mac_type != e1000_82547))
858 netdev->features |= NETIF_F_TSO;
861 if (adapter->hw.mac_type > e1000_82547_rev_2)
862 netdev->features |= NETIF_F_TSO6;
866 netdev->features |= NETIF_F_HIGHDMA;
868 netdev->features |= NETIF_F_LLTX;
870 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
872 /* initialize eeprom parameters */
874 if (e1000_init_eeprom_params(&adapter->hw)) {
875 E1000_ERR("EEPROM initialization failed\n");
879 /* before reading the EEPROM, reset the controller to
880 * put the device in a known good starting state */
882 e1000_reset_hw(&adapter->hw);
884 /* make sure the EEPROM is good */
886 if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
887 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
891 /* copy the MAC address out of the EEPROM */
893 if (e1000_read_mac_addr(&adapter->hw))
894 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
895 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
896 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
898 if (!is_valid_ether_addr(netdev->perm_addr)) {
899 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
903 e1000_get_bus_info(&adapter->hw);
905 init_timer(&adapter->tx_fifo_stall_timer);
906 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
907 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
909 init_timer(&adapter->watchdog_timer);
910 adapter->watchdog_timer.function = &e1000_watchdog;
911 adapter->watchdog_timer.data = (unsigned long) adapter;
913 init_timer(&adapter->phy_info_timer);
914 adapter->phy_info_timer.function = &e1000_update_phy_info;
915 adapter->phy_info_timer.data = (unsigned long) adapter;
917 INIT_WORK(&adapter->reset_task,
918 (void (*)(void *))e1000_reset_task, netdev);
920 e1000_check_options(adapter);
922 /* Initial Wake on LAN setting
923 * If APM wake is enabled in the EEPROM,
924 * enable the ACPI Magic Packet filter
927 switch (adapter->hw.mac_type) {
928 case e1000_82542_rev2_0:
929 case e1000_82542_rev2_1:
933 e1000_read_eeprom(&adapter->hw,
934 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
935 eeprom_apme_mask = E1000_EEPROM_82544_APM;
938 e1000_read_eeprom(&adapter->hw,
939 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
940 eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
943 case e1000_82546_rev_3:
945 case e1000_80003es2lan:
946 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){
947 e1000_read_eeprom(&adapter->hw,
948 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
953 e1000_read_eeprom(&adapter->hw,
954 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
957 if (eeprom_data & eeprom_apme_mask)
958 adapter->eeprom_wol |= E1000_WUFC_MAG;
960 /* now that we have the eeprom settings, apply the special cases
961 * where the eeprom may be wrong or the board simply won't support
962 * wake on lan on a particular port */
963 switch (pdev->device) {
964 case E1000_DEV_ID_82546GB_PCIE:
965 adapter->eeprom_wol = 0;
967 case E1000_DEV_ID_82546EB_FIBER:
968 case E1000_DEV_ID_82546GB_FIBER:
969 case E1000_DEV_ID_82571EB_FIBER:
970 /* Wake events only supported on port A for dual fiber
971 * regardless of eeprom setting */
972 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
973 adapter->eeprom_wol = 0;
975 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
976 case E1000_DEV_ID_82571EB_QUAD_COPPER:
977 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
978 /* if quad port adapter, disable WoL on all but port A */
979 if (global_quad_port_a != 0)
980 adapter->eeprom_wol = 0;
982 adapter->quad_port_a = 1;
983 /* Reset for multiple quad port adapters */
984 if (++global_quad_port_a == 4)
985 global_quad_port_a = 0;
989 /* initialize the wol settings based on the eeprom settings */
990 adapter->wol = adapter->eeprom_wol;
992 /* print bus type/speed/width info */
994 struct e1000_hw *hw = &adapter->hw;
995 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
996 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
997 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
998 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
999 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
1000 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
1001 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
1002 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
1003 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
1004 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
1005 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
1009 for (i = 0; i < 6; i++)
1010 printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');
1012 /* reset the hardware with the new settings */
1013 e1000_reset(adapter);
1015 /* If the controller is 82573 and f/w is AMT, do not set
1016 * DRV_LOAD until the interface is up. For all other cases,
1017 * let the f/w know that the h/w is now under the control
1019 if (adapter->hw.mac_type != e1000_82573 ||
1020 !e1000_check_mng_mode(&adapter->hw))
1021 e1000_get_hw_control(adapter);
1023 strcpy(netdev->name, "eth%d");
1024 if ((err = register_netdev(netdev)))
1027 /* tell the stack to leave us alone until e1000_open() is called */
1028 netif_carrier_off(netdev);
1029 netif_stop_queue(netdev);
1031 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
1037 e1000_release_hw_control(adapter);
1039 if (!e1000_check_phy_reset_block(&adapter->hw))
1040 e1000_phy_hw_reset(&adapter->hw);
1042 if (adapter->hw.flash_address)
1043 iounmap(adapter->hw.flash_address);
1045 #ifdef CONFIG_E1000_NAPI
1046 for (i = 0; i < adapter->num_rx_queues; i++)
1047 dev_put(&adapter->polling_netdev[i]);
1050 kfree(adapter->tx_ring);
1051 kfree(adapter->rx_ring);
1052 #ifdef CONFIG_E1000_NAPI
1053 kfree(adapter->polling_netdev);
1056 iounmap(adapter->hw.hw_addr);
1058 free_netdev(netdev);
1060 pci_release_regions(pdev);
1063 pci_disable_device(pdev);
1068 * e1000_remove - Device Removal Routine
1069 * @pdev: PCI device information struct
1071 * e1000_remove is called by the PCI subsystem to alert the driver
1072 * that it should release a PCI device. The could be caused by a
1073 * Hot-Plug event, or because the driver is going to be removed from
1077 static void __devexit
1078 e1000_remove(struct pci_dev *pdev)
1080 struct net_device *netdev = pci_get_drvdata(pdev);
1081 struct e1000_adapter *adapter = netdev_priv(netdev);
1083 #ifdef CONFIG_E1000_NAPI
1087 flush_scheduled_work();
1089 if (adapter->hw.mac_type >= e1000_82540 &&
1090 adapter->hw.mac_type < e1000_82571 &&
1091 adapter->hw.media_type == e1000_media_type_copper) {
1092 manc = E1000_READ_REG(&adapter->hw, MANC);
1093 if (manc & E1000_MANC_SMBUS_EN) {
1094 manc |= E1000_MANC_ARP_EN;
1095 E1000_WRITE_REG(&adapter->hw, MANC, manc);
1099 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1100 * would have already happened in close and is redundant. */
1101 e1000_release_hw_control(adapter);
1103 unregister_netdev(netdev);
1104 #ifdef CONFIG_E1000_NAPI
1105 for (i = 0; i < adapter->num_rx_queues; i++)
1106 dev_put(&adapter->polling_netdev[i]);
1109 if (!e1000_check_phy_reset_block(&adapter->hw))
1110 e1000_phy_hw_reset(&adapter->hw);
1112 kfree(adapter->tx_ring);
1113 kfree(adapter->rx_ring);
1114 #ifdef CONFIG_E1000_NAPI
1115 kfree(adapter->polling_netdev);
1118 iounmap(adapter->hw.hw_addr);
1119 if (adapter->hw.flash_address)
1120 iounmap(adapter->hw.flash_address);
1121 pci_release_regions(pdev);
1123 free_netdev(netdev);
1125 pci_disable_device(pdev);
1129 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1130 * @adapter: board private structure to initialize
1132 * e1000_sw_init initializes the Adapter private data structure.
1133 * Fields are initialized based on PCI device information and
1134 * OS network device settings (MTU size).
1137 static int __devinit
1138 e1000_sw_init(struct e1000_adapter *adapter)
1140 struct e1000_hw *hw = &adapter->hw;
1141 struct net_device *netdev = adapter->netdev;
1142 struct pci_dev *pdev = adapter->pdev;
1143 #ifdef CONFIG_E1000_NAPI
1147 /* PCI config space info */
1149 hw->vendor_id = pdev->vendor;
1150 hw->device_id = pdev->device;
1151 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1152 hw->subsystem_id = pdev->subsystem_device;
1154 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
1156 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1158 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1159 adapter->rx_ps_bsize0 = E1000_RXBUFFER_128;
1160 hw->max_frame_size = netdev->mtu +
1161 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1162 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1164 /* identify the MAC */
1166 if (e1000_set_mac_type(hw)) {
1167 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1171 switch (hw->mac_type) {
1176 case e1000_82541_rev_2:
1177 case e1000_82547_rev_2:
1178 hw->phy_init_script = 1;
1182 e1000_set_media_type(hw);
1184 hw->wait_autoneg_complete = FALSE;
1185 hw->tbi_compatibility_en = TRUE;
1186 hw->adaptive_ifs = TRUE;
1188 /* Copper options */
1190 if (hw->media_type == e1000_media_type_copper) {
1191 hw->mdix = AUTO_ALL_MODES;
1192 hw->disable_polarity_correction = FALSE;
1193 hw->master_slave = E1000_MASTER_SLAVE;
1196 adapter->num_tx_queues = 1;
1197 adapter->num_rx_queues = 1;
1199 if (e1000_alloc_queues(adapter)) {
1200 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1204 #ifdef CONFIG_E1000_NAPI
1205 for (i = 0; i < adapter->num_rx_queues; i++) {
1206 adapter->polling_netdev[i].priv = adapter;
1207 adapter->polling_netdev[i].poll = &e1000_clean;
1208 adapter->polling_netdev[i].weight = 64;
1209 dev_hold(&adapter->polling_netdev[i]);
1210 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
1212 spin_lock_init(&adapter->tx_queue_lock);
1215 atomic_set(&adapter->irq_sem, 1);
1216 spin_lock_init(&adapter->stats_lock);
1218 set_bit(__E1000_DOWN, &adapter->flags);
1224 * e1000_alloc_queues - Allocate memory for all rings
1225 * @adapter: board private structure to initialize
1227 * We allocate one ring per queue at run-time since we don't know the
1228 * number of queues at compile-time. The polling_netdev array is
1229 * intended for Multiqueue, but should work fine with a single queue.
1232 static int __devinit
1233 e1000_alloc_queues(struct e1000_adapter *adapter)
1237 size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues;
1238 adapter->tx_ring = kmalloc(size, GFP_KERNEL);
1239 if (!adapter->tx_ring)
1241 memset(adapter->tx_ring, 0, size);
1243 size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues;
1244 adapter->rx_ring = kmalloc(size, GFP_KERNEL);
1245 if (!adapter->rx_ring) {
1246 kfree(adapter->tx_ring);
1249 memset(adapter->rx_ring, 0, size);
1251 #ifdef CONFIG_E1000_NAPI
1252 size = sizeof(struct net_device) * adapter->num_rx_queues;
1253 adapter->polling_netdev = kmalloc(size, GFP_KERNEL);
1254 if (!adapter->polling_netdev) {
1255 kfree(adapter->tx_ring);
1256 kfree(adapter->rx_ring);
1259 memset(adapter->polling_netdev, 0, size);
1262 return E1000_SUCCESS;
1266 * e1000_open - Called when a network interface is made active
1267 * @netdev: network interface device structure
1269 * Returns 0 on success, negative value on failure
1271 * The open entry point is called when a network interface is made
1272 * active by the system (IFF_UP). At this point all resources needed
1273 * for transmit and receive operations are allocated, the interrupt
1274 * handler is registered with the OS, the watchdog timer is started,
1275 * and the stack is notified that the interface is ready.
1279 e1000_open(struct net_device *netdev)
1281 struct e1000_adapter *adapter = netdev_priv(netdev);
1284 /* disallow open during test */
1285 if (test_bit(__E1000_TESTING, &adapter->flags))
1288 /* allocate transmit descriptors */
1289 if ((err = e1000_setup_all_tx_resources(adapter)))
1292 /* allocate receive descriptors */
1293 if ((err = e1000_setup_all_rx_resources(adapter)))
1296 err = e1000_request_irq(adapter);
1300 e1000_power_up_phy(adapter);
1302 if ((err = e1000_up(adapter)))
1304 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1305 if ((adapter->hw.mng_cookie.status &
1306 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1307 e1000_update_mng_vlan(adapter);
1310 /* If AMT is enabled, let the firmware know that the network
1311 * interface is now open */
1312 if (adapter->hw.mac_type == e1000_82573 &&
1313 e1000_check_mng_mode(&adapter->hw))
1314 e1000_get_hw_control(adapter);
1316 return E1000_SUCCESS;
1319 e1000_power_down_phy(adapter);
1320 e1000_free_irq(adapter);
1322 e1000_free_all_rx_resources(adapter);
1324 e1000_free_all_tx_resources(adapter);
1326 e1000_reset(adapter);
1332 * e1000_close - Disables a network interface
1333 * @netdev: network interface device structure
1335 * Returns 0, this is not allowed to fail
1337 * The close entry point is called when an interface is de-activated
1338 * by the OS. The hardware is still under the drivers control, but
1339 * needs to be disabled. A global MAC reset is issued to stop the
1340 * hardware, and all transmit and receive resources are freed.
1344 e1000_close(struct net_device *netdev)
1346 struct e1000_adapter *adapter = netdev_priv(netdev);
1348 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1349 e1000_down(adapter);
1350 e1000_power_down_phy(adapter);
1351 e1000_free_irq(adapter);
1353 e1000_free_all_tx_resources(adapter);
1354 e1000_free_all_rx_resources(adapter);
1356 /* kill manageability vlan ID if supported, but not if a vlan with
1357 * the same ID is registered on the host OS (let 8021q kill it) */
1358 if ((adapter->hw.mng_cookie.status &
1359 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1361 adapter->vlgrp->vlan_devices[adapter->mng_vlan_id])) {
1362 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1365 /* If AMT is enabled, let the firmware know that the network
1366 * interface is now closed */
1367 if (adapter->hw.mac_type == e1000_82573 &&
1368 e1000_check_mng_mode(&adapter->hw))
1369 e1000_release_hw_control(adapter);
1375 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1376 * @adapter: address of board private structure
1377 * @start: address of beginning of memory
1378 * @len: length of memory
1381 e1000_check_64k_bound(struct e1000_adapter *adapter,
1382 void *start, unsigned long len)
1384 unsigned long begin = (unsigned long) start;
1385 unsigned long end = begin + len;
1387 /* First rev 82545 and 82546 need to not allow any memory
1388 * write location to cross 64k boundary due to errata 23 */
1389 if (adapter->hw.mac_type == e1000_82545 ||
1390 adapter->hw.mac_type == e1000_82546) {
1391 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
1398 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1399 * @adapter: board private structure
1400 * @txdr: tx descriptor ring (for a specific queue) to setup
1402 * Return 0 on success, negative on failure
1406 e1000_setup_tx_resources(struct e1000_adapter *adapter,
1407 struct e1000_tx_ring *txdr)
1409 struct pci_dev *pdev = adapter->pdev;
1412 size = sizeof(struct e1000_buffer) * txdr->count;
1413 txdr->buffer_info = vmalloc(size);
1414 if (!txdr->buffer_info) {
1416 "Unable to allocate memory for the transmit descriptor ring\n");
1419 memset(txdr->buffer_info, 0, size);
1421 /* round up to nearest 4K */
1423 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1424 E1000_ROUNDUP(txdr->size, 4096);
1426 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1429 vfree(txdr->buffer_info);
1431 "Unable to allocate memory for the transmit descriptor ring\n");
1435 /* Fix for errata 23, can't cross 64kB boundary */
1436 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1437 void *olddesc = txdr->desc;
1438 dma_addr_t olddma = txdr->dma;
1439 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1440 "at %p\n", txdr->size, txdr->desc);
1441 /* Try again, without freeing the previous */
1442 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1443 /* Failed allocation, critical failure */
1445 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1446 goto setup_tx_desc_die;
1449 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1451 pci_free_consistent(pdev, txdr->size, txdr->desc,
1453 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1455 "Unable to allocate aligned memory "
1456 "for the transmit descriptor ring\n");
1457 vfree(txdr->buffer_info);
1460 /* Free old allocation, new allocation was successful */
1461 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1464 memset(txdr->desc, 0, txdr->size);
1466 txdr->next_to_use = 0;
1467 txdr->next_to_clean = 0;
1468 spin_lock_init(&txdr->tx_lock);
1474 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1475 * (Descriptors) for all queues
1476 * @adapter: board private structure
1478 * Return 0 on success, negative on failure
1482 e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1486 for (i = 0; i < adapter->num_tx_queues; i++) {
1487 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1490 "Allocation for Tx Queue %u failed\n", i);
1491 for (i-- ; i >= 0; i--)
1492 e1000_free_tx_resources(adapter,
1493 &adapter->tx_ring[i]);
1502 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1503 * @adapter: board private structure
1505 * Configure the Tx unit of the MAC after a reset.
1509 e1000_configure_tx(struct e1000_adapter *adapter)
1512 struct e1000_hw *hw = &adapter->hw;
1513 uint32_t tdlen, tctl, tipg, tarc;
1514 uint32_t ipgr1, ipgr2;
1516 /* Setup the HW Tx Head and Tail descriptor pointers */
1518 switch (adapter->num_tx_queues) {
1521 tdba = adapter->tx_ring[0].dma;
1522 tdlen = adapter->tx_ring[0].count *
1523 sizeof(struct e1000_tx_desc);
1524 E1000_WRITE_REG(hw, TDLEN, tdlen);
1525 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32));
1526 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
1527 E1000_WRITE_REG(hw, TDT, 0);
1528 E1000_WRITE_REG(hw, TDH, 0);
1529 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
1530 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
1534 /* Set the default values for the Tx Inter Packet Gap timer */
1536 if (hw->media_type == e1000_media_type_fiber ||
1537 hw->media_type == e1000_media_type_internal_serdes)
1538 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1540 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1542 switch (hw->mac_type) {
1543 case e1000_82542_rev2_0:
1544 case e1000_82542_rev2_1:
1545 tipg = DEFAULT_82542_TIPG_IPGT;
1546 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1547 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1549 case e1000_80003es2lan:
1550 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1551 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
1554 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1555 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1558 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1559 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1560 E1000_WRITE_REG(hw, TIPG, tipg);
1562 /* Set the Tx Interrupt Delay register */
1564 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
1565 if (hw->mac_type >= e1000_82540)
1566 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay);
1568 /* Program the Transmit Control Register */
1570 tctl = E1000_READ_REG(hw, TCTL);
1571 tctl &= ~E1000_TCTL_CT;
1572 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1573 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1575 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1576 tarc = E1000_READ_REG(hw, TARC0);
1577 /* set the speed mode bit, we'll clear it if we're not at
1578 * gigabit link later */
1580 E1000_WRITE_REG(hw, TARC0, tarc);
1581 } else if (hw->mac_type == e1000_80003es2lan) {
1582 tarc = E1000_READ_REG(hw, TARC0);
1584 E1000_WRITE_REG(hw, TARC0, tarc);
1585 tarc = E1000_READ_REG(hw, TARC1);
1587 E1000_WRITE_REG(hw, TARC1, tarc);
1590 e1000_config_collision_dist(hw);
1592 /* Setup Transmit Descriptor Settings for eop descriptor */
1593 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1595 /* only set IDE if we are delaying interrupts using the timers */
1596 if (adapter->tx_int_delay)
1597 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1599 if (hw->mac_type < e1000_82543)
1600 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1602 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1604 /* Cache if we're 82544 running in PCI-X because we'll
1605 * need this to apply a workaround later in the send path. */
1606 if (hw->mac_type == e1000_82544 &&
1607 hw->bus_type == e1000_bus_type_pcix)
1608 adapter->pcix_82544 = 1;
1610 E1000_WRITE_REG(hw, TCTL, tctl);
1615 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1616 * @adapter: board private structure
1617 * @rxdr: rx descriptor ring (for a specific queue) to setup
1619 * Returns 0 on success, negative on failure
1623 e1000_setup_rx_resources(struct e1000_adapter *adapter,
1624 struct e1000_rx_ring *rxdr)
1626 struct pci_dev *pdev = adapter->pdev;
1629 size = sizeof(struct e1000_buffer) * rxdr->count;
1630 rxdr->buffer_info = vmalloc(size);
1631 if (!rxdr->buffer_info) {
1633 "Unable to allocate memory for the receive descriptor ring\n");
1636 memset(rxdr->buffer_info, 0, size);
1638 size = sizeof(struct e1000_ps_page) * rxdr->count;
1639 rxdr->ps_page = kmalloc(size, GFP_KERNEL);
1640 if (!rxdr->ps_page) {
1641 vfree(rxdr->buffer_info);
1643 "Unable to allocate memory for the receive descriptor ring\n");
1646 memset(rxdr->ps_page, 0, size);
1648 size = sizeof(struct e1000_ps_page_dma) * rxdr->count;
1649 rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL);
1650 if (!rxdr->ps_page_dma) {
1651 vfree(rxdr->buffer_info);
1652 kfree(rxdr->ps_page);
1654 "Unable to allocate memory for the receive descriptor ring\n");
1657 memset(rxdr->ps_page_dma, 0, size);
1659 if (adapter->hw.mac_type <= e1000_82547_rev_2)
1660 desc_len = sizeof(struct e1000_rx_desc);
1662 desc_len = sizeof(union e1000_rx_desc_packet_split);
1664 /* Round up to nearest 4K */
1666 rxdr->size = rxdr->count * desc_len;
1667 E1000_ROUNDUP(rxdr->size, 4096);
1669 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1673 "Unable to allocate memory for the receive descriptor ring\n");
1675 vfree(rxdr->buffer_info);
1676 kfree(rxdr->ps_page);
1677 kfree(rxdr->ps_page_dma);
1681 /* Fix for errata 23, can't cross 64kB boundary */
1682 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1683 void *olddesc = rxdr->desc;
1684 dma_addr_t olddma = rxdr->dma;
1685 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1686 "at %p\n", rxdr->size, rxdr->desc);
1687 /* Try again, without freeing the previous */
1688 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1689 /* Failed allocation, critical failure */
1691 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1693 "Unable to allocate memory "
1694 "for the receive descriptor ring\n");
1695 goto setup_rx_desc_die;
1698 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1700 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1702 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1704 "Unable to allocate aligned memory "
1705 "for the receive descriptor ring\n");
1706 goto setup_rx_desc_die;
1708 /* Free old allocation, new allocation was successful */
1709 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1712 memset(rxdr->desc, 0, rxdr->size);
1714 rxdr->next_to_clean = 0;
1715 rxdr->next_to_use = 0;
1721 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1722 * (Descriptors) for all queues
1723 * @adapter: board private structure
1725 * Return 0 on success, negative on failure
1729 e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1733 for (i = 0; i < adapter->num_rx_queues; i++) {
1734 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1737 "Allocation for Rx Queue %u failed\n", i);
1738 for (i-- ; i >= 0; i--)
1739 e1000_free_rx_resources(adapter,
1740 &adapter->rx_ring[i]);
1749 * e1000_setup_rctl - configure the receive control registers
1750 * @adapter: Board private structure
1752 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1753 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1755 e1000_setup_rctl(struct e1000_adapter *adapter)
1757 uint32_t rctl, rfctl;
1758 uint32_t psrctl = 0;
1759 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1763 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1765 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1767 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1768 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1769 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
1771 if (adapter->hw.tbi_compatibility_on == 1)
1772 rctl |= E1000_RCTL_SBP;
1774 rctl &= ~E1000_RCTL_SBP;
1776 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1777 rctl &= ~E1000_RCTL_LPE;
1779 rctl |= E1000_RCTL_LPE;
1781 /* Setup buffer sizes */
1782 rctl &= ~E1000_RCTL_SZ_4096;
1783 rctl |= E1000_RCTL_BSEX;
1784 switch (adapter->rx_buffer_len) {
1785 case E1000_RXBUFFER_256:
1786 rctl |= E1000_RCTL_SZ_256;
1787 rctl &= ~E1000_RCTL_BSEX;
1789 case E1000_RXBUFFER_512:
1790 rctl |= E1000_RCTL_SZ_512;
1791 rctl &= ~E1000_RCTL_BSEX;
1793 case E1000_RXBUFFER_1024:
1794 rctl |= E1000_RCTL_SZ_1024;
1795 rctl &= ~E1000_RCTL_BSEX;
1797 case E1000_RXBUFFER_2048:
1799 rctl |= E1000_RCTL_SZ_2048;
1800 rctl &= ~E1000_RCTL_BSEX;
1802 case E1000_RXBUFFER_4096:
1803 rctl |= E1000_RCTL_SZ_4096;
1805 case E1000_RXBUFFER_8192:
1806 rctl |= E1000_RCTL_SZ_8192;
1808 case E1000_RXBUFFER_16384:
1809 rctl |= E1000_RCTL_SZ_16384;
1813 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1814 /* 82571 and greater support packet-split where the protocol
1815 * header is placed in skb->data and the packet data is
1816 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1817 * In the case of a non-split, skb->data is linearly filled,
1818 * followed by the page buffers. Therefore, skb->data is
1819 * sized to hold the largest protocol header.
1821 /* allocations using alloc_page take too long for regular MTU
1822 * so only enable packet split for jumbo frames */
1823 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1824 if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) &&
1825 PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE))
1826 adapter->rx_ps_pages = pages;
1828 adapter->rx_ps_pages = 0;
1830 if (adapter->rx_ps_pages) {
1831 /* Configure extra packet-split registers */
1832 rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
1833 rfctl |= E1000_RFCTL_EXTEN;
1834 /* disable packet split support for IPv6 extension headers,
1835 * because some malformed IPv6 headers can hang the RX */
1836 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
1837 E1000_RFCTL_NEW_IPV6_EXT_DIS);
1839 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
1841 rctl |= E1000_RCTL_DTYP_PS;
1843 psrctl |= adapter->rx_ps_bsize0 >>
1844 E1000_PSRCTL_BSIZE0_SHIFT;
1846 switch (adapter->rx_ps_pages) {
1848 psrctl |= PAGE_SIZE <<
1849 E1000_PSRCTL_BSIZE3_SHIFT;
1851 psrctl |= PAGE_SIZE <<
1852 E1000_PSRCTL_BSIZE2_SHIFT;
1854 psrctl |= PAGE_SIZE >>
1855 E1000_PSRCTL_BSIZE1_SHIFT;
1859 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl);
1862 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1866 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1867 * @adapter: board private structure
1869 * Configure the Rx unit of the MAC after a reset.
1873 e1000_configure_rx(struct e1000_adapter *adapter)
1876 struct e1000_hw *hw = &adapter->hw;
1877 uint32_t rdlen, rctl, rxcsum, ctrl_ext;
1879 if (adapter->rx_ps_pages) {
1880 /* this is a 32 byte descriptor */
1881 rdlen = adapter->rx_ring[0].count *
1882 sizeof(union e1000_rx_desc_packet_split);
1883 adapter->clean_rx = e1000_clean_rx_irq_ps;
1884 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
1886 rdlen = adapter->rx_ring[0].count *
1887 sizeof(struct e1000_rx_desc);
1888 adapter->clean_rx = e1000_clean_rx_irq;
1889 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1892 /* disable receives while setting up the descriptors */
1893 rctl = E1000_READ_REG(hw, RCTL);
1894 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
1896 /* set the Receive Delay Timer Register */
1897 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
1899 if (hw->mac_type >= e1000_82540) {
1900 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay);
1901 if (adapter->itr_setting != 0)
1902 E1000_WRITE_REG(hw, ITR,
1903 1000000000 / (adapter->itr * 256));
1906 if (hw->mac_type >= e1000_82571) {
1907 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1908 /* Reset delay timers after every interrupt */
1909 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
1910 #ifdef CONFIG_E1000_NAPI
1911 /* Auto-Mask interrupts upon ICR access */
1912 ctrl_ext |= E1000_CTRL_EXT_IAME;
1913 E1000_WRITE_REG(hw, IAM, 0xffffffff);
1915 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1916 E1000_WRITE_FLUSH(hw);
1919 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1920 * the Base and Length of the Rx Descriptor Ring */
1921 switch (adapter->num_rx_queues) {
1924 rdba = adapter->rx_ring[0].dma;
1925 E1000_WRITE_REG(hw, RDLEN, rdlen);
1926 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32));
1927 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1928 E1000_WRITE_REG(hw, RDT, 0);
1929 E1000_WRITE_REG(hw, RDH, 0);
1930 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
1931 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
1935 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1936 if (hw->mac_type >= e1000_82543) {
1937 rxcsum = E1000_READ_REG(hw, RXCSUM);
1938 if (adapter->rx_csum == TRUE) {
1939 rxcsum |= E1000_RXCSUM_TUOFL;
1941 /* Enable 82571 IPv4 payload checksum for UDP fragments
1942 * Must be used in conjunction with packet-split. */
1943 if ((hw->mac_type >= e1000_82571) &&
1944 (adapter->rx_ps_pages)) {
1945 rxcsum |= E1000_RXCSUM_IPPCSE;
1948 rxcsum &= ~E1000_RXCSUM_TUOFL;
1949 /* don't need to clear IPPCSE as it defaults to 0 */
1951 E1000_WRITE_REG(hw, RXCSUM, rxcsum);
1954 /* enable early receives on 82573, only takes effect if using > 2048
1955 * byte total frame size. for example only for jumbo frames */
1956 #define E1000_ERT_2048 0x100
1957 if (hw->mac_type == e1000_82573)
1958 E1000_WRITE_REG(hw, ERT, E1000_ERT_2048);
1960 /* Enable Receives */
1961 E1000_WRITE_REG(hw, RCTL, rctl);
1965 * e1000_free_tx_resources - Free Tx Resources per Queue
1966 * @adapter: board private structure
1967 * @tx_ring: Tx descriptor ring for a specific queue
1969 * Free all transmit software resources
1973 e1000_free_tx_resources(struct e1000_adapter *adapter,
1974 struct e1000_tx_ring *tx_ring)
1976 struct pci_dev *pdev = adapter->pdev;
1978 e1000_clean_tx_ring(adapter, tx_ring);
1980 vfree(tx_ring->buffer_info);
1981 tx_ring->buffer_info = NULL;
1983 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1985 tx_ring->desc = NULL;
1989 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1990 * @adapter: board private structure
1992 * Free all transmit software resources
1996 e1000_free_all_tx_resources(struct e1000_adapter *adapter)
2000 for (i = 0; i < adapter->num_tx_queues; i++)
2001 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
2005 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
2006 struct e1000_buffer *buffer_info)
2008 if (buffer_info->dma) {
2009 pci_unmap_page(adapter->pdev,
2011 buffer_info->length,
2013 buffer_info->dma = 0;
2015 if (buffer_info->skb) {
2016 dev_kfree_skb_any(buffer_info->skb);
2017 buffer_info->skb = NULL;
2019 /* buffer_info must be completely set up in the transmit path */
2023 * e1000_clean_tx_ring - Free Tx Buffers
2024 * @adapter: board private structure
2025 * @tx_ring: ring to be cleaned
2029 e1000_clean_tx_ring(struct e1000_adapter *adapter,
2030 struct e1000_tx_ring *tx_ring)
2032 struct e1000_buffer *buffer_info;
2036 /* Free all the Tx ring sk_buffs */
2038 for (i = 0; i < tx_ring->count; i++) {
2039 buffer_info = &tx_ring->buffer_info[i];
2040 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
2043 size = sizeof(struct e1000_buffer) * tx_ring->count;
2044 memset(tx_ring->buffer_info, 0, size);
2046 /* Zero out the descriptor ring */
2048 memset(tx_ring->desc, 0, tx_ring->size);
2050 tx_ring->next_to_use = 0;
2051 tx_ring->next_to_clean = 0;
2052 tx_ring->last_tx_tso = 0;
2054 writel(0, adapter->hw.hw_addr + tx_ring->tdh);
2055 writel(0, adapter->hw.hw_addr + tx_ring->tdt);
2059 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2060 * @adapter: board private structure
2064 e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
2068 for (i = 0; i < adapter->num_tx_queues; i++)
2069 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
2073 * e1000_free_rx_resources - Free Rx Resources
2074 * @adapter: board private structure
2075 * @rx_ring: ring to clean the resources from
2077 * Free all receive software resources
2081 e1000_free_rx_resources(struct e1000_adapter *adapter,
2082 struct e1000_rx_ring *rx_ring)
2084 struct pci_dev *pdev = adapter->pdev;
2086 e1000_clean_rx_ring(adapter, rx_ring);
2088 vfree(rx_ring->buffer_info);
2089 rx_ring->buffer_info = NULL;
2090 kfree(rx_ring->ps_page);
2091 rx_ring->ps_page = NULL;
2092 kfree(rx_ring->ps_page_dma);
2093 rx_ring->ps_page_dma = NULL;
2095 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
2097 rx_ring->desc = NULL;
2101 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2102 * @adapter: board private structure
2104 * Free all receive software resources
2108 e1000_free_all_rx_resources(struct e1000_adapter *adapter)
2112 for (i = 0; i < adapter->num_rx_queues; i++)
2113 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
2117 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2118 * @adapter: board private structure
2119 * @rx_ring: ring to free buffers from
2123 e1000_clean_rx_ring(struct e1000_adapter *adapter,
2124 struct e1000_rx_ring *rx_ring)
2126 struct e1000_buffer *buffer_info;
2127 struct e1000_ps_page *ps_page;
2128 struct e1000_ps_page_dma *ps_page_dma;
2129 struct pci_dev *pdev = adapter->pdev;
2133 /* Free all the Rx ring sk_buffs */
2134 for (i = 0; i < rx_ring->count; i++) {
2135 buffer_info = &rx_ring->buffer_info[i];
2136 if (buffer_info->skb) {
2137 pci_unmap_single(pdev,
2139 buffer_info->length,
2140 PCI_DMA_FROMDEVICE);
2142 dev_kfree_skb(buffer_info->skb);
2143 buffer_info->skb = NULL;
2145 ps_page = &rx_ring->ps_page[i];
2146 ps_page_dma = &rx_ring->ps_page_dma[i];
2147 for (j = 0; j < adapter->rx_ps_pages; j++) {
2148 if (!ps_page->ps_page[j]) break;
2149 pci_unmap_page(pdev,
2150 ps_page_dma->ps_page_dma[j],
2151 PAGE_SIZE, PCI_DMA_FROMDEVICE);
2152 ps_page_dma->ps_page_dma[j] = 0;
2153 put_page(ps_page->ps_page[j]);
2154 ps_page->ps_page[j] = NULL;
2158 size = sizeof(struct e1000_buffer) * rx_ring->count;
2159 memset(rx_ring->buffer_info, 0, size);
2160 size = sizeof(struct e1000_ps_page) * rx_ring->count;
2161 memset(rx_ring->ps_page, 0, size);
2162 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count;
2163 memset(rx_ring->ps_page_dma, 0, size);
2165 /* Zero out the descriptor ring */
2167 memset(rx_ring->desc, 0, rx_ring->size);
2169 rx_ring->next_to_clean = 0;
2170 rx_ring->next_to_use = 0;
2172 writel(0, adapter->hw.hw_addr + rx_ring->rdh);
2173 writel(0, adapter->hw.hw_addr + rx_ring->rdt);
2177 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2178 * @adapter: board private structure
2182 e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2186 for (i = 0; i < adapter->num_rx_queues; i++)
2187 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2190 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2191 * and memory write and invalidate disabled for certain operations
2194 e1000_enter_82542_rst(struct e1000_adapter *adapter)
2196 struct net_device *netdev = adapter->netdev;
2199 e1000_pci_clear_mwi(&adapter->hw);
2201 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2202 rctl |= E1000_RCTL_RST;
2203 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2204 E1000_WRITE_FLUSH(&adapter->hw);
2207 if (netif_running(netdev))
2208 e1000_clean_all_rx_rings(adapter);
2212 e1000_leave_82542_rst(struct e1000_adapter *adapter)
2214 struct net_device *netdev = adapter->netdev;
2217 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2218 rctl &= ~E1000_RCTL_RST;
2219 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2220 E1000_WRITE_FLUSH(&adapter->hw);
2223 if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
2224 e1000_pci_set_mwi(&adapter->hw);
2226 if (netif_running(netdev)) {
2227 /* No need to loop, because 82542 supports only 1 queue */
2228 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2229 e1000_configure_rx(adapter);
2230 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2235 * e1000_set_mac - Change the Ethernet Address of the NIC
2236 * @netdev: network interface device structure
2237 * @p: pointer to an address structure
2239 * Returns 0 on success, negative on failure
2243 e1000_set_mac(struct net_device *netdev, void *p)
2245 struct e1000_adapter *adapter = netdev_priv(netdev);
2246 struct sockaddr *addr = p;
2248 if (!is_valid_ether_addr(addr->sa_data))
2249 return -EADDRNOTAVAIL;
2251 /* 82542 2.0 needs to be in reset to write receive address registers */
2253 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2254 e1000_enter_82542_rst(adapter);
2256 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2257 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
2259 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2261 /* With 82571 controllers, LAA may be overwritten (with the default)
2262 * due to controller reset from the other port. */
2263 if (adapter->hw.mac_type == e1000_82571) {
2264 /* activate the work around */
2265 adapter->hw.laa_is_present = 1;
2267 /* Hold a copy of the LAA in RAR[14] This is done so that
2268 * between the time RAR[0] gets clobbered and the time it
2269 * gets fixed (in e1000_watchdog), the actual LAA is in one
2270 * of the RARs and no incoming packets directed to this port
2271 * are dropped. Eventaully the LAA will be in RAR[0] and
2273 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
2274 E1000_RAR_ENTRIES - 1);
2277 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2278 e1000_leave_82542_rst(adapter);
2284 * e1000_set_multi - Multicast and Promiscuous mode set
2285 * @netdev: network interface device structure
2287 * The set_multi entry point is called whenever the multicast address
2288 * list or the network interface flags are updated. This routine is
2289 * responsible for configuring the hardware for proper multicast,
2290 * promiscuous mode, and all-multi behavior.
2294 e1000_set_multi(struct net_device *netdev)
2296 struct e1000_adapter *adapter = netdev_priv(netdev);
2297 struct e1000_hw *hw = &adapter->hw;
2298 struct dev_mc_list *mc_ptr;
2300 uint32_t hash_value;
2301 int i, rar_entries = E1000_RAR_ENTRIES;
2302 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
2303 E1000_NUM_MTA_REGISTERS_ICH8LAN :
2304 E1000_NUM_MTA_REGISTERS;
2306 if (adapter->hw.mac_type == e1000_ich8lan)
2307 rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
2309 /* reserve RAR[14] for LAA over-write work-around */
2310 if (adapter->hw.mac_type == e1000_82571)
2313 /* Check for Promiscuous and All Multicast modes */
2315 rctl = E1000_READ_REG(hw, RCTL);
2317 if (netdev->flags & IFF_PROMISC) {
2318 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2319 } else if (netdev->flags & IFF_ALLMULTI) {
2320 rctl |= E1000_RCTL_MPE;
2321 rctl &= ~E1000_RCTL_UPE;
2323 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2326 E1000_WRITE_REG(hw, RCTL, rctl);
2328 /* 82542 2.0 needs to be in reset to write receive address registers */
2330 if (hw->mac_type == e1000_82542_rev2_0)
2331 e1000_enter_82542_rst(adapter);
2333 /* load the first 14 multicast address into the exact filters 1-14
2334 * RAR 0 is used for the station MAC adddress
2335 * if there are not 14 addresses, go ahead and clear the filters
2336 * -- with 82571 controllers only 0-13 entries are filled here
2338 mc_ptr = netdev->mc_list;
2340 for (i = 1; i < rar_entries; i++) {
2342 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
2343 mc_ptr = mc_ptr->next;
2345 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2346 E1000_WRITE_FLUSH(hw);
2347 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2348 E1000_WRITE_FLUSH(hw);
2352 /* clear the old settings from the multicast hash table */
2354 for (i = 0; i < mta_reg_count; i++) {
2355 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
2356 E1000_WRITE_FLUSH(hw);
2359 /* load any remaining addresses into the hash table */
2361 for (; mc_ptr; mc_ptr = mc_ptr->next) {
2362 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
2363 e1000_mta_set(hw, hash_value);
2366 if (hw->mac_type == e1000_82542_rev2_0)
2367 e1000_leave_82542_rst(adapter);
2370 /* Need to wait a few seconds after link up to get diagnostic information from
2374 e1000_update_phy_info(unsigned long data)
2376 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2377 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
2381 * e1000_82547_tx_fifo_stall - Timer Call-back
2382 * @data: pointer to adapter cast into an unsigned long
2386 e1000_82547_tx_fifo_stall(unsigned long data)
2388 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2389 struct net_device *netdev = adapter->netdev;
2392 if (atomic_read(&adapter->tx_fifo_stall)) {
2393 if ((E1000_READ_REG(&adapter->hw, TDT) ==
2394 E1000_READ_REG(&adapter->hw, TDH)) &&
2395 (E1000_READ_REG(&adapter->hw, TDFT) ==
2396 E1000_READ_REG(&adapter->hw, TDFH)) &&
2397 (E1000_READ_REG(&adapter->hw, TDFTS) ==
2398 E1000_READ_REG(&adapter->hw, TDFHS))) {
2399 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2400 E1000_WRITE_REG(&adapter->hw, TCTL,
2401 tctl & ~E1000_TCTL_EN);
2402 E1000_WRITE_REG(&adapter->hw, TDFT,
2403 adapter->tx_head_addr);
2404 E1000_WRITE_REG(&adapter->hw, TDFH,
2405 adapter->tx_head_addr);
2406 E1000_WRITE_REG(&adapter->hw, TDFTS,
2407 adapter->tx_head_addr);
2408 E1000_WRITE_REG(&adapter->hw, TDFHS,
2409 adapter->tx_head_addr);
2410 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2411 E1000_WRITE_FLUSH(&adapter->hw);
2413 adapter->tx_fifo_head = 0;
2414 atomic_set(&adapter->tx_fifo_stall, 0);
2415 netif_wake_queue(netdev);
2417 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2423 * e1000_watchdog - Timer Call-back
2424 * @data: pointer to adapter cast into an unsigned long
2427 e1000_watchdog(unsigned long data)
2429 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2430 struct net_device *netdev = adapter->netdev;
2431 struct e1000_tx_ring *txdr = adapter->tx_ring;
2432 uint32_t link, tctl;
2435 ret_val = e1000_check_for_link(&adapter->hw);
2436 if ((ret_val == E1000_ERR_PHY) &&
2437 (adapter->hw.phy_type == e1000_phy_igp_3) &&
2438 (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
2439 /* See e1000_kumeran_lock_loss_workaround() */
2441 "Gigabit has been disabled, downgrading speed\n");
2444 if (adapter->hw.mac_type == e1000_82573) {
2445 e1000_enable_tx_pkt_filtering(&adapter->hw);
2446 if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)
2447 e1000_update_mng_vlan(adapter);
2450 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2451 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
2452 link = !adapter->hw.serdes_link_down;
2454 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
2457 if (!netif_carrier_ok(netdev)) {
2458 boolean_t txb2b = 1;
2459 e1000_get_speed_and_duplex(&adapter->hw,
2460 &adapter->link_speed,
2461 &adapter->link_duplex);
2463 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
2464 adapter->link_speed,
2465 adapter->link_duplex == FULL_DUPLEX ?
2466 "Full Duplex" : "Half Duplex");
2468 /* tweak tx_queue_len according to speed/duplex
2469 * and adjust the timeout factor */
2470 netdev->tx_queue_len = adapter->tx_queue_len;
2471 adapter->tx_timeout_factor = 1;
2472 switch (adapter->link_speed) {
2475 netdev->tx_queue_len = 10;
2476 adapter->tx_timeout_factor = 8;
2480 netdev->tx_queue_len = 100;
2481 /* maybe add some timeout factor ? */
2485 if ((adapter->hw.mac_type == e1000_82571 ||
2486 adapter->hw.mac_type == e1000_82572) &&
2489 tarc0 = E1000_READ_REG(&adapter->hw, TARC0);
2490 tarc0 &= ~(1 << 21);
2491 E1000_WRITE_REG(&adapter->hw, TARC0, tarc0);
2495 /* disable TSO for pcie and 10/100 speeds, to avoid
2496 * some hardware issues */
2497 if (!adapter->tso_force &&
2498 adapter->hw.bus_type == e1000_bus_type_pci_express){
2499 switch (adapter->link_speed) {
2503 "10/100 speed: disabling TSO\n");
2504 netdev->features &= ~NETIF_F_TSO;
2506 netdev->features &= ~NETIF_F_TSO6;
2510 netdev->features |= NETIF_F_TSO;
2512 netdev->features |= NETIF_F_TSO6;
2522 /* enable transmits in the hardware, need to do this
2523 * after setting TARC0 */
2524 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2525 tctl |= E1000_TCTL_EN;
2526 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2528 netif_carrier_on(netdev);
2529 netif_wake_queue(netdev);
2530 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2531 adapter->smartspeed = 0;
2534 if (netif_carrier_ok(netdev)) {
2535 adapter->link_speed = 0;
2536 adapter->link_duplex = 0;
2537 DPRINTK(LINK, INFO, "NIC Link is Down\n");
2538 netif_carrier_off(netdev);
2539 netif_stop_queue(netdev);
2540 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2542 /* 80003ES2LAN workaround--
2543 * For packet buffer work-around on link down event;
2544 * disable receives in the ISR and
2545 * reset device here in the watchdog
2547 if (adapter->hw.mac_type == e1000_80003es2lan)
2549 schedule_work(&adapter->reset_task);
2552 e1000_smartspeed(adapter);
2555 e1000_update_stats(adapter);
2557 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2558 adapter->tpt_old = adapter->stats.tpt;
2559 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
2560 adapter->colc_old = adapter->stats.colc;
2562 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2563 adapter->gorcl_old = adapter->stats.gorcl;
2564 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2565 adapter->gotcl_old = adapter->stats.gotcl;
2567 e1000_update_adaptive(&adapter->hw);
2569 if (!netif_carrier_ok(netdev)) {
2570 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2571 /* We've lost link, so the controller stops DMA,
2572 * but we've got queued Tx work that's never going
2573 * to get done, so reset controller to flush Tx.
2574 * (Do the reset outside of interrupt context). */
2575 adapter->tx_timeout_count++;
2576 schedule_work(&adapter->reset_task);
2580 /* Cause software interrupt to ensure rx ring is cleaned */
2581 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
2583 /* Force detection of hung controller every watchdog period */
2584 adapter->detect_tx_hung = TRUE;
2586 /* With 82571 controllers, LAA may be overwritten due to controller
2587 * reset from the other port. Set the appropriate LAA in RAR[0] */
2588 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
2589 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2591 /* Reset the timer */
2592 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2595 enum latency_range {
2599 latency_invalid = 255
2603 * e1000_update_itr - update the dynamic ITR value based on statistics
2604 * Stores a new ITR value based on packets and byte
2605 * counts during the last interrupt. The advantage of per interrupt
2606 * computation is faster updates and more accurate ITR for the current
2607 * traffic pattern. Constants in this function were computed
2608 * based on theoretical maximum wire speed and thresholds were set based
2609 * on testing data as well as attempting to minimize response time
2610 * while increasing bulk throughput.
2611 * this functionality is controlled by the InterruptThrottleRate module
2612 * parameter (see e1000_param.c)
2613 * @adapter: pointer to adapter
2614 * @itr_setting: current adapter->itr
2615 * @packets: the number of packets during this measurement interval
2616 * @bytes: the number of bytes during this measurement interval
2618 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2619 uint16_t itr_setting,
2623 unsigned int retval = itr_setting;
2624 struct e1000_hw *hw = &adapter->hw;
2626 if (unlikely(hw->mac_type < e1000_82540))
2627 goto update_itr_done;
2630 goto update_itr_done;
2633 switch (itr_setting) {
2634 case lowest_latency:
2635 if ((packets < 5) && (bytes > 512))
2636 retval = low_latency;
2638 case low_latency: /* 50 usec aka 20000 ints/s */
2639 if (bytes > 10000) {
2640 if ((packets < 10) ||
2641 ((bytes/packets) > 1200))
2642 retval = bulk_latency;
2643 else if ((packets > 35))
2644 retval = lowest_latency;
2645 } else if (packets <= 2 && bytes < 512)
2646 retval = lowest_latency;
2648 case bulk_latency: /* 250 usec aka 4000 ints/s */
2649 if (bytes > 25000) {
2651 retval = low_latency;
2654 retval = low_latency;
2663 static void e1000_set_itr(struct e1000_adapter *adapter)
2665 struct e1000_hw *hw = &adapter->hw;
2666 uint16_t current_itr;
2667 uint32_t new_itr = adapter->itr;
2669 if (unlikely(hw->mac_type < e1000_82540))
2672 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2673 if (unlikely(adapter->link_speed != SPEED_1000)) {
2679 adapter->tx_itr = e1000_update_itr(adapter,
2681 adapter->total_tx_packets,
2682 adapter->total_tx_bytes);
2683 adapter->rx_itr = e1000_update_itr(adapter,
2685 adapter->total_rx_packets,
2686 adapter->total_rx_bytes);
2688 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2690 /* conservative mode eliminates the lowest_latency setting */
2691 if (current_itr == lowest_latency && (adapter->itr_setting == 3))
2692 current_itr = low_latency;
2694 switch (current_itr) {
2695 /* counts and packets in update_itr are dependent on these numbers */
2696 case lowest_latency:
2700 new_itr = 20000; /* aka hwitr = ~200 */
2710 if (new_itr != adapter->itr) {
2711 /* this attempts to bias the interrupt rate towards Bulk
2712 * by adding intermediate steps when interrupt rate is
2714 new_itr = new_itr > adapter->itr ?
2715 min(adapter->itr + (new_itr >> 2), new_itr) :
2717 adapter->itr = new_itr;
2718 E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256));
2724 #define E1000_TX_FLAGS_CSUM 0x00000001
2725 #define E1000_TX_FLAGS_VLAN 0x00000002
2726 #define E1000_TX_FLAGS_TSO 0x00000004
2727 #define E1000_TX_FLAGS_IPV4 0x00000008
2728 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2729 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2732 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2733 struct sk_buff *skb)
2736 struct e1000_context_desc *context_desc;
2737 struct e1000_buffer *buffer_info;
2739 uint32_t cmd_length = 0;
2740 uint16_t ipcse = 0, tucse, mss;
2741 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
2744 if (skb_is_gso(skb)) {
2745 if (skb_header_cloned(skb)) {
2746 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2751 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2752 mss = skb_shinfo(skb)->gso_size;
2753 if (skb->protocol == htons(ETH_P_IP)) {
2754 skb->nh.iph->tot_len = 0;
2755 skb->nh.iph->check = 0;
2757 ~csum_tcpudp_magic(skb->nh.iph->saddr,
2762 cmd_length = E1000_TXD_CMD_IP;
2763 ipcse = skb->h.raw - skb->data - 1;
2765 } else if (skb->protocol == htons(ETH_P_IPV6)) {
2766 skb->nh.ipv6h->payload_len = 0;
2768 ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
2769 &skb->nh.ipv6h->daddr,
2776 ipcss = skb->nh.raw - skb->data;
2777 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
2778 tucss = skb->h.raw - skb->data;
2779 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
2782 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2783 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2785 i = tx_ring->next_to_use;
2786 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2787 buffer_info = &tx_ring->buffer_info[i];
2789 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2790 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2791 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2792 context_desc->upper_setup.tcp_fields.tucss = tucss;
2793 context_desc->upper_setup.tcp_fields.tucso = tucso;
2794 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2795 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2796 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2797 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2799 buffer_info->time_stamp = jiffies;
2800 buffer_info->next_to_watch = i;
2802 if (++i == tx_ring->count) i = 0;
2803 tx_ring->next_to_use = i;
2813 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2814 struct sk_buff *skb)
2816 struct e1000_context_desc *context_desc;
2817 struct e1000_buffer *buffer_info;
2821 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2822 css = skb->h.raw - skb->data;
2824 i = tx_ring->next_to_use;
2825 buffer_info = &tx_ring->buffer_info[i];
2826 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2828 context_desc->upper_setup.tcp_fields.tucss = css;
2829 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset;
2830 context_desc->upper_setup.tcp_fields.tucse = 0;
2831 context_desc->tcp_seg_setup.data = 0;
2832 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
2834 buffer_info->time_stamp = jiffies;
2835 buffer_info->next_to_watch = i;
2837 if (unlikely(++i == tx_ring->count)) i = 0;
2838 tx_ring->next_to_use = i;
2846 #define E1000_MAX_TXD_PWR 12
2847 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2850 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2851 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd,
2852 unsigned int nr_frags, unsigned int mss)
2854 struct e1000_buffer *buffer_info;
2855 unsigned int len = skb->len;
2856 unsigned int offset = 0, size, count = 0, i;
2858 len -= skb->data_len;
2860 i = tx_ring->next_to_use;
2863 buffer_info = &tx_ring->buffer_info[i];
2864 size = min(len, max_per_txd);
2866 /* Workaround for Controller erratum --
2867 * descriptor for non-tso packet in a linear SKB that follows a
2868 * tso gets written back prematurely before the data is fully
2869 * DMA'd to the controller */
2870 if (!skb->data_len && tx_ring->last_tx_tso &&
2872 tx_ring->last_tx_tso = 0;
2876 /* Workaround for premature desc write-backs
2877 * in TSO mode. Append 4-byte sentinel desc */
2878 if (unlikely(mss && !nr_frags && size == len && size > 8))
2881 /* work-around for errata 10 and it applies
2882 * to all controllers in PCI-X mode
2883 * The fix is to make sure that the first descriptor of a
2884 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2886 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2887 (size > 2015) && count == 0))
2890 /* Workaround for potential 82544 hang in PCI-X. Avoid
2891 * terminating buffers within evenly-aligned dwords. */
2892 if (unlikely(adapter->pcix_82544 &&
2893 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2897 buffer_info->length = size;
2899 pci_map_single(adapter->pdev,
2903 buffer_info->time_stamp = jiffies;
2904 buffer_info->next_to_watch = i;
2909 if (unlikely(++i == tx_ring->count)) i = 0;
2912 for (f = 0; f < nr_frags; f++) {
2913 struct skb_frag_struct *frag;
2915 frag = &skb_shinfo(skb)->frags[f];
2917 offset = frag->page_offset;
2920 buffer_info = &tx_ring->buffer_info[i];
2921 size = min(len, max_per_txd);
2923 /* Workaround for premature desc write-backs
2924 * in TSO mode. Append 4-byte sentinel desc */
2925 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
2928 /* Workaround for potential 82544 hang in PCI-X.
2929 * Avoid terminating buffers within evenly-aligned
2931 if (unlikely(adapter->pcix_82544 &&
2932 !((unsigned long)(frag->page+offset+size-1) & 4) &&
2936 buffer_info->length = size;
2938 pci_map_page(adapter->pdev,
2943 buffer_info->time_stamp = jiffies;
2944 buffer_info->next_to_watch = i;
2949 if (unlikely(++i == tx_ring->count)) i = 0;
2953 i = (i == 0) ? tx_ring->count - 1 : i - 1;
2954 tx_ring->buffer_info[i].skb = skb;
2955 tx_ring->buffer_info[first].next_to_watch = i;
2961 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2962 int tx_flags, int count)
2964 struct e1000_tx_desc *tx_desc = NULL;
2965 struct e1000_buffer *buffer_info;
2966 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2969 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2970 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2972 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2974 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2975 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2978 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2979 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2980 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2983 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
2984 txd_lower |= E1000_TXD_CMD_VLE;
2985 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
2988 i = tx_ring->next_to_use;
2991 buffer_info = &tx_ring->buffer_info[i];
2992 tx_desc = E1000_TX_DESC(*tx_ring, i);
2993 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2994 tx_desc->lower.data =
2995 cpu_to_le32(txd_lower | buffer_info->length);
2996 tx_desc->upper.data = cpu_to_le32(txd_upper);
2997 if (unlikely(++i == tx_ring->count)) i = 0;
3000 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3002 /* Force memory writes to complete before letting h/w
3003 * know there are new descriptors to fetch. (Only
3004 * applicable for weak-ordered memory model archs,
3005 * such as IA-64). */
3008 tx_ring->next_to_use = i;
3009 writel(i, adapter->hw.hw_addr + tx_ring->tdt);
3010 /* we need this if more than one processor can write to our tail
3011 * at a time, it syncronizes IO on IA64/Altix systems */
3016 * 82547 workaround to avoid controller hang in half-duplex environment.
3017 * The workaround is to avoid queuing a large packet that would span
3018 * the internal Tx FIFO ring boundary by notifying the stack to resend
3019 * the packet at a later time. This gives the Tx FIFO an opportunity to
3020 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3021 * to the beginning of the Tx FIFO.
3024 #define E1000_FIFO_HDR 0x10
3025 #define E1000_82547_PAD_LEN 0x3E0
3028 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
3030 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
3031 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
3033 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
3035 if (adapter->link_duplex != HALF_DUPLEX)
3036 goto no_fifo_stall_required;
3038 if (atomic_read(&adapter->tx_fifo_stall))
3041 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
3042 atomic_set(&adapter->tx_fifo_stall, 1);
3046 no_fifo_stall_required:
3047 adapter->tx_fifo_head += skb_fifo_len;
3048 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
3049 adapter->tx_fifo_head -= adapter->tx_fifo_size;
3053 #define MINIMUM_DHCP_PACKET_SIZE 282
3055 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
3057 struct e1000_hw *hw = &adapter->hw;
3058 uint16_t length, offset;
3059 if (vlan_tx_tag_present(skb)) {
3060 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
3061 ( adapter->hw.mng_cookie.status &
3062 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
3065 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
3066 struct ethhdr *eth = (struct ethhdr *) skb->data;
3067 if ((htons(ETH_P_IP) == eth->h_proto)) {
3068 const struct iphdr *ip =
3069 (struct iphdr *)((uint8_t *)skb->data+14);
3070 if (IPPROTO_UDP == ip->protocol) {
3071 struct udphdr *udp =
3072 (struct udphdr *)((uint8_t *)ip +
3074 if (ntohs(udp->dest) == 67) {
3075 offset = (uint8_t *)udp + 8 - skb->data;
3076 length = skb->len - offset;
3078 return e1000_mng_write_dhcp_info(hw,
3088 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3090 struct e1000_adapter *adapter = netdev_priv(netdev);
3091 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
3093 netif_stop_queue(netdev);
3094 /* Herbert's original patch had:
3095 * smp_mb__after_netif_stop_queue();
3096 * but since that doesn't exist yet, just open code it. */
3099 /* We need to check again in a case another CPU has just
3100 * made room available. */
3101 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
3105 netif_start_queue(netdev);
3106 ++adapter->restart_queue;
3110 static int e1000_maybe_stop_tx(struct net_device *netdev,
3111 struct e1000_tx_ring *tx_ring, int size)
3113 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
3115 return __e1000_maybe_stop_tx(netdev, size);
3118 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3120 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3122 struct e1000_adapter *adapter = netdev_priv(netdev);
3123 struct e1000_tx_ring *tx_ring;
3124 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
3125 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3126 unsigned int tx_flags = 0;
3127 unsigned int len = skb->len;
3128 unsigned long flags;
3129 unsigned int nr_frags = 0;
3130 unsigned int mss = 0;
3134 len -= skb->data_len;
3136 /* This goes back to the question of how to logically map a tx queue
3137 * to a flow. Right now, performance is impacted slightly negatively
3138 * if using multiple tx queues. If the stack breaks away from a
3139 * single qdisc implementation, we can look at this again. */
3140 tx_ring = adapter->tx_ring;
3142 if (unlikely(skb->len <= 0)) {
3143 dev_kfree_skb_any(skb);
3144 return NETDEV_TX_OK;
3147 /* 82571 and newer doesn't need the workaround that limited descriptor
3149 if (adapter->hw.mac_type >= e1000_82571)
3153 mss = skb_shinfo(skb)->gso_size;
3154 /* The controller does a simple calculation to
3155 * make sure there is enough room in the FIFO before
3156 * initiating the DMA for each buffer. The calc is:
3157 * 4 = ceil(buffer len/mss). To make sure we don't
3158 * overrun the FIFO, adjust the max buffer len if mss
3162 max_per_txd = min(mss << 2, max_per_txd);
3163 max_txd_pwr = fls(max_per_txd) - 1;
3165 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3166 * points to just header, pull a few bytes of payload from
3167 * frags into skb->data */
3168 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
3169 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
3170 switch (adapter->hw.mac_type) {
3171 unsigned int pull_size;
3176 pull_size = min((unsigned int)4, skb->data_len);
3177 if (!__pskb_pull_tail(skb, pull_size)) {
3179 "__pskb_pull_tail failed.\n");
3180 dev_kfree_skb_any(skb);
3181 return NETDEV_TX_OK;
3183 len = skb->len - skb->data_len;
3192 /* reserve a descriptor for the offload context */
3193 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3197 if (skb->ip_summed == CHECKSUM_PARTIAL)
3202 /* Controller Erratum workaround */
3203 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
3207 count += TXD_USE_COUNT(len, max_txd_pwr);
3209 if (adapter->pcix_82544)
3212 /* work-around for errata 10 and it applies to all controllers
3213 * in PCI-X mode, so add one more descriptor to the count
3215 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
3219 nr_frags = skb_shinfo(skb)->nr_frags;
3220 for (f = 0; f < nr_frags; f++)
3221 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3223 if (adapter->pcix_82544)
3227 if (adapter->hw.tx_pkt_filtering &&
3228 (adapter->hw.mac_type == e1000_82573))
3229 e1000_transfer_dhcp_info(adapter, skb);
3231 local_irq_save(flags);
3232 if (!spin_trylock(&tx_ring->tx_lock)) {
3233 /* Collision - tell upper layer to requeue */
3234 local_irq_restore(flags);
3235 return NETDEV_TX_LOCKED;
3238 /* need: count + 2 desc gap to keep tail from touching
3239 * head, otherwise try next time */
3240 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) {
3241 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3242 return NETDEV_TX_BUSY;
3245 if (unlikely(adapter->hw.mac_type == e1000_82547)) {
3246 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
3247 netif_stop_queue(netdev);
3248 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
3249 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3250 return NETDEV_TX_BUSY;
3254 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
3255 tx_flags |= E1000_TX_FLAGS_VLAN;
3256 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3259 first = tx_ring->next_to_use;
3261 tso = e1000_tso(adapter, tx_ring, skb);
3263 dev_kfree_skb_any(skb);
3264 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3265 return NETDEV_TX_OK;
3269 tx_ring->last_tx_tso = 1;
3270 tx_flags |= E1000_TX_FLAGS_TSO;
3271 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
3272 tx_flags |= E1000_TX_FLAGS_CSUM;
3274 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3275 * 82571 hardware supports TSO capabilities for IPv6 as well...
3276 * no longer assume, we must. */
3277 if (likely(skb->protocol == htons(ETH_P_IP)))
3278 tx_flags |= E1000_TX_FLAGS_IPV4;
3280 e1000_tx_queue(adapter, tx_ring, tx_flags,
3281 e1000_tx_map(adapter, tx_ring, skb, first,
3282 max_per_txd, nr_frags, mss));
3284 netdev->trans_start = jiffies;
3286 /* Make sure there is space in the ring for the next send. */
3287 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
3289 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3290 return NETDEV_TX_OK;
3294 * e1000_tx_timeout - Respond to a Tx Hang
3295 * @netdev: network interface device structure
3299 e1000_tx_timeout(struct net_device *netdev)
3301 struct e1000_adapter *adapter = netdev_priv(netdev);
3303 /* Do the reset outside of interrupt context */
3304 adapter->tx_timeout_count++;
3305 schedule_work(&adapter->reset_task);
3309 e1000_reset_task(struct net_device *netdev)
3311 struct e1000_adapter *adapter = netdev_priv(netdev);
3313 e1000_reinit_locked(adapter);
3317 * e1000_get_stats - Get System Network Statistics
3318 * @netdev: network interface device structure
3320 * Returns the address of the device statistics structure.
3321 * The statistics are actually updated from the timer callback.
3324 static struct net_device_stats *
3325 e1000_get_stats(struct net_device *netdev)
3327 struct e1000_adapter *adapter = netdev_priv(netdev);
3329 /* only return the current stats */
3330 return &adapter->net_stats;
3334 * e1000_change_mtu - Change the Maximum Transfer Unit
3335 * @netdev: network interface device structure
3336 * @new_mtu: new value for maximum frame size
3338 * Returns 0 on success, negative on failure
3342 e1000_change_mtu(struct net_device *netdev, int new_mtu)
3344 struct e1000_adapter *adapter = netdev_priv(netdev);
3345 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
3346 uint16_t eeprom_data = 0;
3348 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3349 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3350 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
3354 /* Adapter-specific max frame size limits. */
3355 switch (adapter->hw.mac_type) {
3356 case e1000_undefined ... e1000_82542_rev2_1:
3358 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3359 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
3364 /* Jumbo Frames not supported if:
3365 * - this is not an 82573L device
3366 * - ASPM is enabled in any way (0x1A bits 3:2) */
3367 e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1,
3369 if ((adapter->hw.device_id != E1000_DEV_ID_82573L) ||
3370 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
3371 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3373 "Jumbo Frames not supported.\n");
3378 /* ERT will be enabled later to enable wire speed receives */
3380 /* fall through to get support */
3383 case e1000_80003es2lan:
3384 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3385 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3386 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
3391 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3395 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3396 * means we reserve 2 more, this pushes us to allocate from the next
3398 * i.e. RXBUFFER_2048 --> size-4096 slab */
3400 if (max_frame <= E1000_RXBUFFER_256)
3401 adapter->rx_buffer_len = E1000_RXBUFFER_256;
3402 else if (max_frame <= E1000_RXBUFFER_512)
3403 adapter->rx_buffer_len = E1000_RXBUFFER_512;
3404 else if (max_frame <= E1000_RXBUFFER_1024)
3405 adapter->rx_buffer_len = E1000_RXBUFFER_1024;
3406 else if (max_frame <= E1000_RXBUFFER_2048)
3407 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3408 else if (max_frame <= E1000_RXBUFFER_4096)
3409 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
3410 else if (max_frame <= E1000_RXBUFFER_8192)
3411 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
3412 else if (max_frame <= E1000_RXBUFFER_16384)
3413 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3415 /* adjust allocation if LPE protects us, and we aren't using SBP */
3416 if (!adapter->hw.tbi_compatibility_on &&
3417 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
3418 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3419 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3421 netdev->mtu = new_mtu;
3423 if (netif_running(netdev))
3424 e1000_reinit_locked(adapter);
3426 adapter->hw.max_frame_size = max_frame;
3432 * e1000_update_stats - Update the board statistics counters
3433 * @adapter: board private structure
3437 e1000_update_stats(struct e1000_adapter *adapter)
3439 struct e1000_hw *hw = &adapter->hw;
3440 struct pci_dev *pdev = adapter->pdev;
3441 unsigned long flags;
3444 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3447 * Prevent stats update while adapter is being reset, or if the pci
3448 * connection is down.
3450 if (adapter->link_speed == 0)
3452 if (pdev->error_state && pdev->error_state != pci_channel_io_normal)
3455 spin_lock_irqsave(&adapter->stats_lock, flags);
3457 /* these counters are modified from e1000_adjust_tbi_stats,
3458 * called from the interrupt context, so they must only
3459 * be written while holding adapter->stats_lock
3462 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
3463 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
3464 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
3465 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
3466 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
3467 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
3468 adapter->stats.roc += E1000_READ_REG(hw, ROC);
3470 if (adapter->hw.mac_type != e1000_ich8lan) {
3471 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
3472 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
3473 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
3474 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
3475 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
3476 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
3479 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
3480 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
3481 adapter->stats.scc += E1000_READ_REG(hw, SCC);
3482 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
3483 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
3484 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
3485 adapter->stats.dc += E1000_READ_REG(hw, DC);
3486 adapter->stats.sec += E1000_READ_REG(hw, SEC);
3487 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
3488 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
3489 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
3490 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
3491 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
3492 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
3493 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
3494 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
3495 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
3496 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
3497 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
3498 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
3499 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
3500 adapter->stats.torl += E1000_READ_REG(hw, TORL);
3501 adapter->stats.torh += E1000_READ_REG(hw, TORH);
3502 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
3503 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
3504 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
3506 if (adapter->hw.mac_type != e1000_ich8lan) {
3507 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
3508 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
3509 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
3510 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
3511 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
3512 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
3515 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
3516 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
3518 /* used for adaptive IFS */
3520 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
3521 adapter->stats.tpt += hw->tx_packet_delta;
3522 hw->collision_delta = E1000_READ_REG(hw, COLC);
3523 adapter->stats.colc += hw->collision_delta;
3525 if (hw->mac_type >= e1000_82543) {
3526 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
3527 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
3528 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
3529 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
3530 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
3531 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
3533 if (hw->mac_type > e1000_82547_rev_2) {
3534 adapter->stats.iac += E1000_READ_REG(hw, IAC);
3535 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC);
3537 if (adapter->hw.mac_type != e1000_ich8lan) {
3538 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC);
3539 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC);
3540 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC);
3541 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC);
3542 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC);
3543 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC);
3544 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC);
3548 /* Fill out the OS statistics structure */
3549 adapter->net_stats.rx_packets = adapter->stats.gprc;
3550 adapter->net_stats.tx_packets = adapter->stats.gptc;
3551 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
3552 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
3553 adapter->net_stats.multicast = adapter->stats.mprc;
3554 adapter->net_stats.collisions = adapter->stats.colc;
3558 /* RLEC on some newer hardware can be incorrect so build
3559 * our own version based on RUC and ROC */
3560 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3561 adapter->stats.crcerrs + adapter->stats.algnerrc +
3562 adapter->stats.ruc + adapter->stats.roc +
3563 adapter->stats.cexterr;
3564 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3565 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
3566 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3567 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3568 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3571 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3572 adapter->net_stats.tx_errors = adapter->stats.txerrc;
3573 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3574 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3575 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3577 /* Tx Dropped needs to be maintained elsewhere */
3580 if (hw->media_type == e1000_media_type_copper) {
3581 if ((adapter->link_speed == SPEED_1000) &&
3582 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3583 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3584 adapter->phy_stats.idle_errors += phy_tmp;
3587 if ((hw->mac_type <= e1000_82546) &&
3588 (hw->phy_type == e1000_phy_m88) &&
3589 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3590 adapter->phy_stats.receive_errors += phy_tmp;
3593 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3595 #ifdef CONFIG_PCI_MSI
3598 * e1000_intr_msi - Interrupt Handler
3599 * @irq: interrupt number
3600 * @data: pointer to a network interface device structure
3604 irqreturn_t e1000_intr_msi(int irq, void *data)
3606 struct net_device *netdev = data;
3607 struct e1000_adapter *adapter = netdev_priv(netdev);
3608 struct e1000_hw *hw = &adapter->hw;
3609 #ifndef CONFIG_E1000_NAPI
3613 /* this code avoids the read of ICR but has to get 1000 interrupts
3614 * at every link change event before it will notice the change */
3615 if (++adapter->detect_link >= 1000) {
3616 uint32_t icr = E1000_READ_REG(hw, ICR);
3617 #ifdef CONFIG_E1000_NAPI
3618 /* read ICR disables interrupts using IAM, so keep up with our
3619 * enable/disable accounting */
3620 atomic_inc(&adapter->irq_sem);
3622 adapter->detect_link = 0;
3623 if ((icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) &&
3624 (icr & E1000_ICR_INT_ASSERTED)) {
3625 hw->get_link_status = 1;
3626 /* 80003ES2LAN workaround--
3627 * For packet buffer work-around on link down event;
3628 * disable receives here in the ISR and
3629 * reset adapter in watchdog
3631 if (netif_carrier_ok(netdev) &&
3632 (adapter->hw.mac_type == e1000_80003es2lan)) {
3633 /* disable receives */
3634 uint32_t rctl = E1000_READ_REG(hw, RCTL);
3635 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
3637 /* guard against interrupt when we're going down */
3638 if (!test_bit(__E1000_DOWN, &adapter->flags))
3639 mod_timer(&adapter->watchdog_timer,
3643 E1000_WRITE_REG(hw, ICR, (0xffffffff & ~(E1000_ICR_RXSEQ |
3645 /* bummer we have to flush here, but things break otherwise as
3646 * some event appears to be lost or delayed and throughput
3647 * drops. In almost all tests this flush is un-necessary */
3648 E1000_WRITE_FLUSH(hw);
3649 #ifdef CONFIG_E1000_NAPI
3650 /* Interrupt Auto-Mask (IAM)...upon writing ICR, interrupts are
3651 * masked. No need for the IMC write, but it does mean we
3652 * should account for it ASAP. */
3653 atomic_inc(&adapter->irq_sem);
3657 #ifdef CONFIG_E1000_NAPI
3658 if (likely(netif_rx_schedule_prep(netdev))) {
3659 adapter->total_tx_bytes = 0;
3660 adapter->total_tx_packets = 0;
3661 adapter->total_rx_bytes = 0;
3662 adapter->total_rx_packets = 0;
3663 __netif_rx_schedule(netdev);
3665 e1000_irq_enable(adapter);
3667 adapter->total_tx_bytes = 0;
3668 adapter->total_rx_bytes = 0;
3669 adapter->total_tx_packets = 0;
3670 adapter->total_rx_packets = 0;
3672 for (i = 0; i < E1000_MAX_INTR; i++)
3673 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
3674 !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
3677 if (likely(adapter->itr_setting & 3))
3678 e1000_set_itr(adapter);
3686 * e1000_intr - Interrupt Handler
3687 * @irq: interrupt number
3688 * @data: pointer to a network interface device structure
3692 e1000_intr(int irq, void *data)
3694 struct net_device *netdev = data;
3695 struct e1000_adapter *adapter = netdev_priv(netdev);
3696 struct e1000_hw *hw = &adapter->hw;
3697 uint32_t rctl, icr = E1000_READ_REG(hw, ICR);
3698 #ifndef CONFIG_E1000_NAPI
3702 return IRQ_NONE; /* Not our interrupt */
3704 #ifdef CONFIG_E1000_NAPI
3705 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3706 * not set, then the adapter didn't send an interrupt */
3707 if (unlikely(hw->mac_type >= e1000_82571 &&
3708 !(icr & E1000_ICR_INT_ASSERTED)))
3711 /* Interrupt Auto-Mask...upon reading ICR,
3712 * interrupts are masked. No need for the
3713 * IMC write, but it does mean we should
3714 * account for it ASAP. */
3715 if (likely(hw->mac_type >= e1000_82571))
3716 atomic_inc(&adapter->irq_sem);
3719 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3720 hw->get_link_status = 1;
3721 /* 80003ES2LAN workaround--
3722 * For packet buffer work-around on link down event;
3723 * disable receives here in the ISR and
3724 * reset adapter in watchdog
3726 if (netif_carrier_ok(netdev) &&
3727 (adapter->hw.mac_type == e1000_80003es2lan)) {
3728 /* disable receives */
3729 rctl = E1000_READ_REG(hw, RCTL);
3730 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
3732 /* guard against interrupt when we're going down */
3733 if (!test_bit(__E1000_DOWN, &adapter->flags))
3734 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3737 #ifdef CONFIG_E1000_NAPI
3738 if (unlikely(hw->mac_type < e1000_82571)) {
3739 /* disable interrupts, without the synchronize_irq bit */
3740 atomic_inc(&adapter->irq_sem);
3741 E1000_WRITE_REG(hw, IMC, ~0);
3742 E1000_WRITE_FLUSH(hw);
3744 if (likely(netif_rx_schedule_prep(netdev))) {
3745 adapter->total_tx_bytes = 0;
3746 adapter->total_tx_packets = 0;
3747 adapter->total_rx_bytes = 0;
3748 adapter->total_rx_packets = 0;
3749 __netif_rx_schedule(netdev);
3751 /* this really should not happen! if it does it is basically a
3752 * bug, but not a hard error, so enable ints and continue */
3753 e1000_irq_enable(adapter);
3755 /* Writing IMC and IMS is needed for 82547.
3756 * Due to Hub Link bus being occupied, an interrupt
3757 * de-assertion message is not able to be sent.
3758 * When an interrupt assertion message is generated later,
3759 * two messages are re-ordered and sent out.
3760 * That causes APIC to think 82547 is in de-assertion
3761 * state, while 82547 is in assertion state, resulting
3762 * in dead lock. Writing IMC forces 82547 into
3763 * de-assertion state.
3765 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) {
3766 atomic_inc(&adapter->irq_sem);
3767 E1000_WRITE_REG(hw, IMC, ~0);
3770 adapter->total_tx_bytes = 0;
3771 adapter->total_rx_bytes = 0;
3772 adapter->total_tx_packets = 0;
3773 adapter->total_rx_packets = 0;
3775 for (i = 0; i < E1000_MAX_INTR; i++)
3776 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
3777 !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
3780 if (likely(adapter->itr_setting & 3))
3781 e1000_set_itr(adapter);
3783 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
3784 e1000_irq_enable(adapter);
3790 #ifdef CONFIG_E1000_NAPI
3792 * e1000_clean - NAPI Rx polling callback
3793 * @adapter: board private structure
3797 e1000_clean(struct net_device *poll_dev, int *budget)
3799 struct e1000_adapter *adapter;
3800 int work_to_do = min(*budget, poll_dev->quota);
3801 int tx_cleaned = 0, work_done = 0;
3803 /* Must NOT use netdev_priv macro here. */
3804 adapter = poll_dev->priv;
3806 /* Keep link state information with original netdev */
3807 if (!netif_carrier_ok(poll_dev))
3810 /* e1000_clean is called per-cpu. This lock protects
3811 * tx_ring[0] from being cleaned by multiple cpus
3812 * simultaneously. A failure obtaining the lock means
3813 * tx_ring[0] is currently being cleaned anyway. */
3814 if (spin_trylock(&adapter->tx_queue_lock)) {
3815 tx_cleaned = e1000_clean_tx_irq(adapter,
3816 &adapter->tx_ring[0]);
3817 spin_unlock(&adapter->tx_queue_lock);
3820 adapter->clean_rx(adapter, &adapter->rx_ring[0],
3821 &work_done, work_to_do);
3823 *budget -= work_done;
3824 poll_dev->quota -= work_done;
3826 /* If no Tx and not enough Rx work done, exit the polling mode */
3827 if ((!tx_cleaned && (work_done == 0)) ||
3828 !netif_running(poll_dev)) {
3830 if (likely(adapter->itr_setting & 3))
3831 e1000_set_itr(adapter);
3832 netif_rx_complete(poll_dev);
3833 e1000_irq_enable(adapter);
3842 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3843 * @adapter: board private structure
3847 e1000_clean_tx_irq(struct e1000_adapter *adapter,
3848 struct e1000_tx_ring *tx_ring)
3850 struct net_device *netdev = adapter->netdev;
3851 struct e1000_tx_desc *tx_desc, *eop_desc;
3852 struct e1000_buffer *buffer_info;
3853 unsigned int i, eop;
3854 #ifdef CONFIG_E1000_NAPI
3855 unsigned int count = 0;
3857 boolean_t cleaned = FALSE;
3858 unsigned int total_tx_bytes=0, total_tx_packets=0;
3860 i = tx_ring->next_to_clean;
3861 eop = tx_ring->buffer_info[i].next_to_watch;
3862 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3864 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
3865 for (cleaned = FALSE; !cleaned; ) {
3866 tx_desc = E1000_TX_DESC(*tx_ring, i);
3867 buffer_info = &tx_ring->buffer_info[i];
3868 cleaned = (i == eop);
3871 /* this packet count is wrong for TSO but has a
3872 * tendency to make dynamic ITR change more
3875 total_tx_bytes += buffer_info->skb->len;
3877 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3878 tx_desc->upper.data = 0;
3880 if (unlikely(++i == tx_ring->count)) i = 0;
3883 eop = tx_ring->buffer_info[i].next_to_watch;
3884 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3885 #ifdef CONFIG_E1000_NAPI
3886 #define E1000_TX_WEIGHT 64
3887 /* weight of a sort for tx, to avoid endless transmit cleanup */
3888 if (count++ == E1000_TX_WEIGHT) break;
3892 tx_ring->next_to_clean = i;
3894 #define TX_WAKE_THRESHOLD 32
3895 if (unlikely(cleaned && netif_carrier_ok(netdev) &&
3896 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3897 /* Make sure that anybody stopping the queue after this
3898 * sees the new next_to_clean.
3901 if (netif_queue_stopped(netdev)) {
3902 netif_wake_queue(netdev);
3903 ++adapter->restart_queue;
3907 if (adapter->detect_tx_hung) {
3908 /* Detect a transmit hang in hardware, this serializes the
3909 * check with the clearing of time_stamp and movement of i */
3910 adapter->detect_tx_hung = FALSE;
3911 if (tx_ring->buffer_info[eop].dma &&
3912 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3913 (adapter->tx_timeout_factor * HZ))
3914 && !(E1000_READ_REG(&adapter->hw, STATUS) &
3915 E1000_STATUS_TXOFF)) {
3917 /* detected Tx unit hang */
3918 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3922 " next_to_use <%x>\n"
3923 " next_to_clean <%x>\n"
3924 "buffer_info[next_to_clean]\n"
3925 " time_stamp <%lx>\n"
3926 " next_to_watch <%x>\n"
3928 " next_to_watch.status <%x>\n",
3929 (unsigned long)((tx_ring - adapter->tx_ring) /
3930 sizeof(struct e1000_tx_ring)),
3931 readl(adapter->hw.hw_addr + tx_ring->tdh),
3932 readl(adapter->hw.hw_addr + tx_ring->tdt),
3933 tx_ring->next_to_use,
3934 tx_ring->next_to_clean,
3935 tx_ring->buffer_info[eop].time_stamp,
3938 eop_desc->upper.fields.status);
3939 netif_stop_queue(netdev);
3942 adapter->total_tx_bytes += total_tx_bytes;
3943 adapter->total_tx_packets += total_tx_packets;
3948 * e1000_rx_checksum - Receive Checksum Offload for 82543
3949 * @adapter: board private structure
3950 * @status_err: receive descriptor status and error fields
3951 * @csum: receive descriptor csum field
3952 * @sk_buff: socket buffer with received data
3956 e1000_rx_checksum(struct e1000_adapter *adapter,
3957 uint32_t status_err, uint32_t csum,
3958 struct sk_buff *skb)
3960 uint16_t status = (uint16_t)status_err;
3961 uint8_t errors = (uint8_t)(status_err >> 24);
3962 skb->ip_summed = CHECKSUM_NONE;
3964 /* 82543 or newer only */
3965 if (unlikely(adapter->hw.mac_type < e1000_82543)) return;
3966 /* Ignore Checksum bit is set */
3967 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
3968 /* TCP/UDP checksum error bit is set */
3969 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3970 /* let the stack verify checksum errors */
3971 adapter->hw_csum_err++;
3974 /* TCP/UDP Checksum has not been calculated */
3975 if (adapter->hw.mac_type <= e1000_82547_rev_2) {
3976 if (!(status & E1000_RXD_STAT_TCPCS))
3979 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
3982 /* It must be a TCP or UDP packet with a valid checksum */
3983 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3984 /* TCP checksum is good */
3985 skb->ip_summed = CHECKSUM_UNNECESSARY;
3986 } else if (adapter->hw.mac_type > e1000_82547_rev_2) {
3987 /* IP fragment with UDP payload */
3988 /* Hardware complements the payload checksum, so we undo it
3989 * and then put the value in host order for further stack use.
3991 csum = ntohl(csum ^ 0xFFFF);
3993 skb->ip_summed = CHECKSUM_COMPLETE;
3995 adapter->hw_csum_good++;
3999 * e1000_clean_rx_irq - Send received data up the network stack; legacy
4000 * @adapter: board private structure
4004 #ifdef CONFIG_E1000_NAPI
4005 e1000_clean_rx_irq(struct e1000_adapter *adapter,
4006 struct e1000_rx_ring *rx_ring,
4007 int *work_done, int work_to_do)
4009 e1000_clean_rx_irq(struct e1000_adapter *adapter,
4010 struct e1000_rx_ring *rx_ring)
4013 struct net_device *netdev = adapter->netdev;
4014 struct pci_dev *pdev = adapter->pdev;
4015 struct e1000_rx_desc *rx_desc, *next_rxd;
4016 struct e1000_buffer *buffer_info, *next_buffer;
4017 unsigned long flags;
4021 int cleaned_count = 0;
4022 boolean_t cleaned = FALSE;
4023 unsigned int total_rx_bytes=0, total_rx_packets=0;
4025 i = rx_ring->next_to_clean;
4026 rx_desc = E1000_RX_DESC(*rx_ring, i);
4027 buffer_info = &rx_ring->buffer_info[i];
4029 while (rx_desc->status & E1000_RXD_STAT_DD) {
4030 struct sk_buff *skb;
4033 #ifdef CONFIG_E1000_NAPI
4034 if (*work_done >= work_to_do)
4038 status = rx_desc->status;
4039 skb = buffer_info->skb;
4040 buffer_info->skb = NULL;
4042 prefetch(skb->data - NET_IP_ALIGN);
4044 if (++i == rx_ring->count) i = 0;
4045 next_rxd = E1000_RX_DESC(*rx_ring, i);
4048 next_buffer = &rx_ring->buffer_info[i];
4052 pci_unmap_single(pdev,
4054 buffer_info->length,
4055 PCI_DMA_FROMDEVICE);
4057 length = le16_to_cpu(rx_desc->length);
4059 if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
4060 /* All receives must fit into a single buffer */
4061 E1000_DBG("%s: Receive packet consumed multiple"
4062 " buffers\n", netdev->name);
4064 buffer_info->skb = skb;
4068 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
4069 last_byte = *(skb->data + length - 1);
4070 if (TBI_ACCEPT(&adapter->hw, status,
4071 rx_desc->errors, length, last_byte)) {
4072 spin_lock_irqsave(&adapter->stats_lock, flags);
4073 e1000_tbi_adjust_stats(&adapter->hw,
4076 spin_unlock_irqrestore(&adapter->stats_lock,
4081 buffer_info->skb = skb;
4086 /* adjust length to remove Ethernet CRC, this must be
4087 * done after the TBI_ACCEPT workaround above */
4090 /* probably a little skewed due to removing CRC */
4091 total_rx_bytes += length;
4094 /* code added for copybreak, this should improve
4095 * performance for small packets with large amounts
4096 * of reassembly being done in the stack */
4097 #define E1000_CB_LENGTH 256
4098 if (length < E1000_CB_LENGTH) {
4099 struct sk_buff *new_skb =
4100 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
4102 skb_reserve(new_skb, NET_IP_ALIGN);
4103 memcpy(new_skb->data - NET_IP_ALIGN,
4104 skb->data - NET_IP_ALIGN,
4105 length + NET_IP_ALIGN);
4106 /* save the skb in buffer_info as good */
4107 buffer_info->skb = skb;
4110 /* else just continue with the old one */
4112 /* end copybreak code */
4113 skb_put(skb, length);
4115 /* Receive Checksum Offload */
4116 e1000_rx_checksum(adapter,
4117 (uint32_t)(status) |
4118 ((uint32_t)(rx_desc->errors) << 24),
4119 le16_to_cpu(rx_desc->csum), skb);
4121 skb->protocol = eth_type_trans(skb, netdev);
4122 #ifdef CONFIG_E1000_NAPI
4123 if (unlikely(adapter->vlgrp &&
4124 (status & E1000_RXD_STAT_VP))) {
4125 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
4126 le16_to_cpu(rx_desc->special) &
4127 E1000_RXD_SPC_VLAN_MASK);
4129 netif_receive_skb(skb);
4131 #else /* CONFIG_E1000_NAPI */
4132 if (unlikely(adapter->vlgrp &&
4133 (status & E1000_RXD_STAT_VP))) {
4134 vlan_hwaccel_rx(skb, adapter->vlgrp,
4135 le16_to_cpu(rx_desc->special) &
4136 E1000_RXD_SPC_VLAN_MASK);
4140 #endif /* CONFIG_E1000_NAPI */
4141 netdev->last_rx = jiffies;
4144 rx_desc->status = 0;
4146 /* return some buffers to hardware, one at a time is too slow */
4147 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4148 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4152 /* use prefetched values */
4154 buffer_info = next_buffer;
4156 rx_ring->next_to_clean = i;
4158 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4160 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4162 adapter->total_rx_packets += total_rx_packets;
4163 adapter->total_rx_bytes += total_rx_bytes;
4168 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
4169 * @adapter: board private structure
4173 #ifdef CONFIG_E1000_NAPI
4174 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
4175 struct e1000_rx_ring *rx_ring,
4176 int *work_done, int work_to_do)
4178 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
4179 struct e1000_rx_ring *rx_ring)
4182 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
4183 struct net_device *netdev = adapter->netdev;
4184 struct pci_dev *pdev = adapter->pdev;
4185 struct e1000_buffer *buffer_info, *next_buffer;
4186 struct e1000_ps_page *ps_page;
4187 struct e1000_ps_page_dma *ps_page_dma;
4188 struct sk_buff *skb;
4190 uint32_t length, staterr;
4191 int cleaned_count = 0;
4192 boolean_t cleaned = FALSE;
4193 unsigned int total_rx_bytes=0, total_rx_packets=0;
4195 i = rx_ring->next_to_clean;
4196 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
4197 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
4198 buffer_info = &rx_ring->buffer_info[i];
4200 while (staterr & E1000_RXD_STAT_DD) {
4201 ps_page = &rx_ring->ps_page[i];
4202 ps_page_dma = &rx_ring->ps_page_dma[i];
4203 #ifdef CONFIG_E1000_NAPI
4204 if (unlikely(*work_done >= work_to_do))
4208 skb = buffer_info->skb;
4210 /* in the packet split case this is header only */
4211 prefetch(skb->data - NET_IP_ALIGN);
4213 if (++i == rx_ring->count) i = 0;
4214 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
4217 next_buffer = &rx_ring->buffer_info[i];
4221 pci_unmap_single(pdev, buffer_info->dma,
4222 buffer_info->length,
4223 PCI_DMA_FROMDEVICE);
4225 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) {
4226 E1000_DBG("%s: Packet Split buffers didn't pick up"
4227 " the full packet\n", netdev->name);
4228 dev_kfree_skb_irq(skb);
4232 if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
4233 dev_kfree_skb_irq(skb);
4237 length = le16_to_cpu(rx_desc->wb.middle.length0);
4239 if (unlikely(!length)) {
4240 E1000_DBG("%s: Last part of the packet spanning"
4241 " multiple descriptors\n", netdev->name);
4242 dev_kfree_skb_irq(skb);
4247 skb_put(skb, length);
4250 /* this looks ugly, but it seems compiler issues make it
4251 more efficient than reusing j */
4252 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
4254 /* page alloc/put takes too long and effects small packet
4255 * throughput, so unsplit small packets and save the alloc/put*/
4256 if (l1 && ((length + l1) <= adapter->rx_ps_bsize0)) {
4258 /* there is no documentation about how to call
4259 * kmap_atomic, so we can't hold the mapping
4261 pci_dma_sync_single_for_cpu(pdev,
4262 ps_page_dma->ps_page_dma[0],
4264 PCI_DMA_FROMDEVICE);
4265 vaddr = kmap_atomic(ps_page->ps_page[0],
4266 KM_SKB_DATA_SOFTIRQ);
4267 memcpy(skb->tail, vaddr, l1);
4268 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
4269 pci_dma_sync_single_for_device(pdev,
4270 ps_page_dma->ps_page_dma[0],
4271 PAGE_SIZE, PCI_DMA_FROMDEVICE);
4272 /* remove the CRC */
4279 for (j = 0; j < adapter->rx_ps_pages; j++) {
4280 if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j])))
4282 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j],
4283 PAGE_SIZE, PCI_DMA_FROMDEVICE);
4284 ps_page_dma->ps_page_dma[j] = 0;
4285 skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0,
4287 ps_page->ps_page[j] = NULL;
4289 skb->data_len += length;
4290 skb->truesize += length;
4293 /* strip the ethernet crc, problem is we're using pages now so
4294 * this whole operation can get a little cpu intensive */
4295 pskb_trim(skb, skb->len - 4);
4298 total_rx_bytes += skb->len;
4301 e1000_rx_checksum(adapter, staterr,
4302 le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
4303 skb->protocol = eth_type_trans(skb, netdev);
4305 if (likely(rx_desc->wb.upper.header_status &
4306 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)))
4307 adapter->rx_hdr_split++;
4308 #ifdef CONFIG_E1000_NAPI
4309 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
4310 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
4311 le16_to_cpu(rx_desc->wb.middle.vlan) &
4312 E1000_RXD_SPC_VLAN_MASK);
4314 netif_receive_skb(skb);
4316 #else /* CONFIG_E1000_NAPI */
4317 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
4318 vlan_hwaccel_rx(skb, adapter->vlgrp,
4319 le16_to_cpu(rx_desc->wb.middle.vlan) &
4320 E1000_RXD_SPC_VLAN_MASK);
4324 #endif /* CONFIG_E1000_NAPI */
4325 netdev->last_rx = jiffies;
4328 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
4329 buffer_info->skb = NULL;
4331 /* return some buffers to hardware, one at a time is too slow */
4332 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4333 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4337 /* use prefetched values */
4339 buffer_info = next_buffer;
4341 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
4343 rx_ring->next_to_clean = i;
4345 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4347 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4349 adapter->total_rx_packets += total_rx_packets;
4350 adapter->total_rx_bytes += total_rx_bytes;
4355 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4356 * @adapter: address of board private structure
4360 e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4361 struct e1000_rx_ring *rx_ring,
4364 struct net_device *netdev = adapter->netdev;
4365 struct pci_dev *pdev = adapter->pdev;
4366 struct e1000_rx_desc *rx_desc;
4367 struct e1000_buffer *buffer_info;
4368 struct sk_buff *skb;
4370 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
4372 i = rx_ring->next_to_use;
4373 buffer_info = &rx_ring->buffer_info[i];
4375 while (cleaned_count--) {
4376 skb = buffer_info->skb;
4382 skb = netdev_alloc_skb(netdev, bufsz);
4383 if (unlikely(!skb)) {
4384 /* Better luck next round */
4385 adapter->alloc_rx_buff_failed++;
4389 /* Fix for errata 23, can't cross 64kB boundary */
4390 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4391 struct sk_buff *oldskb = skb;
4392 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
4393 "at %p\n", bufsz, skb->data);
4394 /* Try again, without freeing the previous */
4395 skb = netdev_alloc_skb(netdev, bufsz);
4396 /* Failed allocation, critical failure */
4398 dev_kfree_skb(oldskb);
4402 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4405 dev_kfree_skb(oldskb);
4406 break; /* while !buffer_info->skb */
4409 /* Use new allocation */
4410 dev_kfree_skb(oldskb);
4412 /* Make buffer alignment 2 beyond a 16 byte boundary
4413 * this will result in a 16 byte aligned IP header after
4414 * the 14 byte MAC header is removed
4416 skb_reserve(skb, NET_IP_ALIGN);
4418 buffer_info->skb = skb;
4419 buffer_info->length = adapter->rx_buffer_len;
4421 buffer_info->dma = pci_map_single(pdev,
4423 adapter->rx_buffer_len,
4424 PCI_DMA_FROMDEVICE);
4426 /* Fix for errata 23, can't cross 64kB boundary */
4427 if (!e1000_check_64k_bound(adapter,
4428 (void *)(unsigned long)buffer_info->dma,
4429 adapter->rx_buffer_len)) {
4430 DPRINTK(RX_ERR, ERR,
4431 "dma align check failed: %u bytes at %p\n",
4432 adapter->rx_buffer_len,
4433 (void *)(unsigned long)buffer_info->dma);
4435 buffer_info->skb = NULL;
4437 pci_unmap_single(pdev, buffer_info->dma,
4438 adapter->rx_buffer_len,
4439 PCI_DMA_FROMDEVICE);
4441 break; /* while !buffer_info->skb */
4443 rx_desc = E1000_RX_DESC(*rx_ring, i);
4444 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4446 if (unlikely(++i == rx_ring->count))
4448 buffer_info = &rx_ring->buffer_info[i];
4451 if (likely(rx_ring->next_to_use != i)) {
4452 rx_ring->next_to_use = i;
4453 if (unlikely(i-- == 0))
4454 i = (rx_ring->count - 1);
4456 /* Force memory writes to complete before letting h/w
4457 * know there are new descriptors to fetch. (Only
4458 * applicable for weak-ordered memory model archs,
4459 * such as IA-64). */
4461 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
4466 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4467 * @adapter: address of board private structure
4471 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
4472 struct e1000_rx_ring *rx_ring,
4475 struct net_device *netdev = adapter->netdev;
4476 struct pci_dev *pdev = adapter->pdev;
4477 union e1000_rx_desc_packet_split *rx_desc;
4478 struct e1000_buffer *buffer_info;
4479 struct e1000_ps_page *ps_page;
4480 struct e1000_ps_page_dma *ps_page_dma;
4481 struct sk_buff *skb;
4484 i = rx_ring->next_to_use;
4485 buffer_info = &rx_ring->buffer_info[i];
4486 ps_page = &rx_ring->ps_page[i];
4487 ps_page_dma = &rx_ring->ps_page_dma[i];
4489 while (cleaned_count--) {
4490 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
4492 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
4493 if (j < adapter->rx_ps_pages) {
4494 if (likely(!ps_page->ps_page[j])) {
4495 ps_page->ps_page[j] =
4496 alloc_page(GFP_ATOMIC);
4497 if (unlikely(!ps_page->ps_page[j])) {
4498 adapter->alloc_rx_buff_failed++;
4501 ps_page_dma->ps_page_dma[j] =
4503 ps_page->ps_page[j],
4505 PCI_DMA_FROMDEVICE);
4507 /* Refresh the desc even if buffer_addrs didn't
4508 * change because each write-back erases
4511 rx_desc->read.buffer_addr[j+1] =
4512 cpu_to_le64(ps_page_dma->ps_page_dma[j]);
4514 rx_desc->read.buffer_addr[j+1] = ~0;
4517 skb = netdev_alloc_skb(netdev,
4518 adapter->rx_ps_bsize0 + NET_IP_ALIGN);
4520 if (unlikely(!skb)) {
4521 adapter->alloc_rx_buff_failed++;
4525 /* Make buffer alignment 2 beyond a 16 byte boundary
4526 * this will result in a 16 byte aligned IP header after
4527 * the 14 byte MAC header is removed
4529 skb_reserve(skb, NET_IP_ALIGN);
4531 buffer_info->skb = skb;
4532 buffer_info->length = adapter->rx_ps_bsize0;
4533 buffer_info->dma = pci_map_single(pdev, skb->data,
4534 adapter->rx_ps_bsize0,
4535 PCI_DMA_FROMDEVICE);
4537 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
4539 if (unlikely(++i == rx_ring->count)) i = 0;
4540 buffer_info = &rx_ring->buffer_info[i];
4541 ps_page = &rx_ring->ps_page[i];
4542 ps_page_dma = &rx_ring->ps_page_dma[i];
4546 if (likely(rx_ring->next_to_use != i)) {
4547 rx_ring->next_to_use = i;
4548 if (unlikely(i-- == 0)) i = (rx_ring->count - 1);
4550 /* Force memory writes to complete before letting h/w
4551 * know there are new descriptors to fetch. (Only
4552 * applicable for weak-ordered memory model archs,
4553 * such as IA-64). */
4555 /* Hardware increments by 16 bytes, but packet split
4556 * descriptors are 32 bytes...so we increment tail
4559 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt);
4564 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4569 e1000_smartspeed(struct e1000_adapter *adapter)
4571 uint16_t phy_status;
4574 if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
4575 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
4578 if (adapter->smartspeed == 0) {
4579 /* If Master/Slave config fault is asserted twice,
4580 * we assume back-to-back */
4581 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
4582 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4583 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
4584 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4585 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
4586 if (phy_ctrl & CR_1000T_MS_ENABLE) {
4587 phy_ctrl &= ~CR_1000T_MS_ENABLE;
4588 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
4590 adapter->smartspeed++;
4591 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
4592 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
4594 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4595 MII_CR_RESTART_AUTO_NEG);
4596 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
4601 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4602 /* If still no link, perhaps using 2/3 pair cable */
4603 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
4604 phy_ctrl |= CR_1000T_MS_ENABLE;
4605 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
4606 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
4607 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
4608 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4609 MII_CR_RESTART_AUTO_NEG);
4610 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
4613 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4614 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4615 adapter->smartspeed = 0;
4626 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4632 return e1000_mii_ioctl(netdev, ifr, cmd);
4646 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4648 struct e1000_adapter *adapter = netdev_priv(netdev);
4649 struct mii_ioctl_data *data = if_mii(ifr);
4653 unsigned long flags;
4655 if (adapter->hw.media_type != e1000_media_type_copper)
4660 data->phy_id = adapter->hw.phy_addr;
4663 if (!capable(CAP_NET_ADMIN))
4665 spin_lock_irqsave(&adapter->stats_lock, flags);
4666 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
4668 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4671 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4674 if (!capable(CAP_NET_ADMIN))
4676 if (data->reg_num & ~(0x1F))
4678 mii_reg = data->val_in;
4679 spin_lock_irqsave(&adapter->stats_lock, flags);
4680 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
4682 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4685 if (adapter->hw.media_type == e1000_media_type_copper) {
4686 switch (data->reg_num) {
4688 if (mii_reg & MII_CR_POWER_DOWN)
4690 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4691 adapter->hw.autoneg = 1;
4692 adapter->hw.autoneg_advertised = 0x2F;
4695 spddplx = SPEED_1000;
4696 else if (mii_reg & 0x2000)
4697 spddplx = SPEED_100;
4700 spddplx += (mii_reg & 0x100)
4703 retval = e1000_set_spd_dplx(adapter,
4706 spin_unlock_irqrestore(
4707 &adapter->stats_lock,
4712 if (netif_running(adapter->netdev))
4713 e1000_reinit_locked(adapter);
4715 e1000_reset(adapter);
4717 case M88E1000_PHY_SPEC_CTRL:
4718 case M88E1000_EXT_PHY_SPEC_CTRL:
4719 if (e1000_phy_reset(&adapter->hw)) {
4720 spin_unlock_irqrestore(
4721 &adapter->stats_lock, flags);
4727 switch (data->reg_num) {
4729 if (mii_reg & MII_CR_POWER_DOWN)
4731 if (netif_running(adapter->netdev))
4732 e1000_reinit_locked(adapter);
4734 e1000_reset(adapter);
4738 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4743 return E1000_SUCCESS;
4747 e1000_pci_set_mwi(struct e1000_hw *hw)
4749 struct e1000_adapter *adapter = hw->back;
4750 int ret_val = pci_set_mwi(adapter->pdev);
4753 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4757 e1000_pci_clear_mwi(struct e1000_hw *hw)
4759 struct e1000_adapter *adapter = hw->back;
4761 pci_clear_mwi(adapter->pdev);
4765 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4767 struct e1000_adapter *adapter = hw->back;
4769 pci_read_config_word(adapter->pdev, reg, value);
4773 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4775 struct e1000_adapter *adapter = hw->back;
4777 pci_write_config_word(adapter->pdev, reg, *value);
4781 e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4783 struct e1000_adapter *adapter = hw->back;
4784 uint16_t cap_offset;
4786 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
4788 return -E1000_ERR_CONFIG;
4790 pci_read_config_word(adapter->pdev, cap_offset + reg, value);
4792 return E1000_SUCCESS;
4796 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
4802 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
4804 struct e1000_adapter *adapter = netdev_priv(netdev);
4805 uint32_t ctrl, rctl;
4807 e1000_irq_disable(adapter);
4808 adapter->vlgrp = grp;
4811 /* enable VLAN tag insert/strip */
4812 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4813 ctrl |= E1000_CTRL_VME;
4814 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4816 if (adapter->hw.mac_type != e1000_ich8lan) {
4817 /* enable VLAN receive filtering */
4818 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4819 rctl |= E1000_RCTL_VFE;
4820 rctl &= ~E1000_RCTL_CFIEN;
4821 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4822 e1000_update_mng_vlan(adapter);
4825 /* disable VLAN tag insert/strip */
4826 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4827 ctrl &= ~E1000_CTRL_VME;
4828 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4830 if (adapter->hw.mac_type != e1000_ich8lan) {
4831 /* disable VLAN filtering */
4832 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4833 rctl &= ~E1000_RCTL_VFE;
4834 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4835 if (adapter->mng_vlan_id !=
4836 (uint16_t)E1000_MNG_VLAN_NONE) {
4837 e1000_vlan_rx_kill_vid(netdev,
4838 adapter->mng_vlan_id);
4839 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4844 e1000_irq_enable(adapter);
4848 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
4850 struct e1000_adapter *adapter = netdev_priv(netdev);
4851 uint32_t vfta, index;
4853 if ((adapter->hw.mng_cookie.status &
4854 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4855 (vid == adapter->mng_vlan_id))
4857 /* add VID to filter table */
4858 index = (vid >> 5) & 0x7F;
4859 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4860 vfta |= (1 << (vid & 0x1F));
4861 e1000_write_vfta(&adapter->hw, index, vfta);
4865 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
4867 struct e1000_adapter *adapter = netdev_priv(netdev);
4868 uint32_t vfta, index;
4870 e1000_irq_disable(adapter);
4873 adapter->vlgrp->vlan_devices[vid] = NULL;
4875 e1000_irq_enable(adapter);
4877 if ((adapter->hw.mng_cookie.status &
4878 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4879 (vid == adapter->mng_vlan_id)) {
4880 /* release control to f/w */
4881 e1000_release_hw_control(adapter);
4885 /* remove VID from filter table */
4886 index = (vid >> 5) & 0x7F;
4887 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4888 vfta &= ~(1 << (vid & 0x1F));
4889 e1000_write_vfta(&adapter->hw, index, vfta);
4893 e1000_restore_vlan(struct e1000_adapter *adapter)
4895 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4897 if (adapter->vlgrp) {
4899 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4900 if (!adapter->vlgrp->vlan_devices[vid])
4902 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4908 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
4910 adapter->hw.autoneg = 0;
4912 /* Fiber NICs only allow 1000 gbps Full duplex */
4913 if ((adapter->hw.media_type == e1000_media_type_fiber) &&
4914 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4915 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4920 case SPEED_10 + DUPLEX_HALF:
4921 adapter->hw.forced_speed_duplex = e1000_10_half;
4923 case SPEED_10 + DUPLEX_FULL:
4924 adapter->hw.forced_speed_duplex = e1000_10_full;
4926 case SPEED_100 + DUPLEX_HALF:
4927 adapter->hw.forced_speed_duplex = e1000_100_half;
4929 case SPEED_100 + DUPLEX_FULL:
4930 adapter->hw.forced_speed_duplex = e1000_100_full;
4932 case SPEED_1000 + DUPLEX_FULL:
4933 adapter->hw.autoneg = 1;
4934 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
4936 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4938 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4945 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4946 * bus we're on (PCI(X) vs. PCI-E)
4948 #define PCIE_CONFIG_SPACE_LEN 256
4949 #define PCI_CONFIG_SPACE_LEN 64
4951 e1000_pci_save_state(struct e1000_adapter *adapter)
4953 struct pci_dev *dev = adapter->pdev;
4957 if (adapter->hw.mac_type >= e1000_82571)
4958 size = PCIE_CONFIG_SPACE_LEN;
4960 size = PCI_CONFIG_SPACE_LEN;
4962 WARN_ON(adapter->config_space != NULL);
4964 adapter->config_space = kmalloc(size, GFP_KERNEL);
4965 if (!adapter->config_space) {
4966 DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size);
4969 for (i = 0; i < (size / 4); i++)
4970 pci_read_config_dword(dev, i * 4, &adapter->config_space[i]);
4975 e1000_pci_restore_state(struct e1000_adapter *adapter)
4977 struct pci_dev *dev = adapter->pdev;
4981 if (adapter->config_space == NULL)
4984 if (adapter->hw.mac_type >= e1000_82571)
4985 size = PCIE_CONFIG_SPACE_LEN;
4987 size = PCI_CONFIG_SPACE_LEN;
4988 for (i = 0; i < (size / 4); i++)
4989 pci_write_config_dword(dev, i * 4, adapter->config_space[i]);
4990 kfree(adapter->config_space);
4991 adapter->config_space = NULL;
4994 #endif /* CONFIG_PM */
4997 e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4999 struct net_device *netdev = pci_get_drvdata(pdev);
5000 struct e1000_adapter *adapter = netdev_priv(netdev);
5001 uint32_t ctrl, ctrl_ext, rctl, manc, status;
5002 uint32_t wufc = adapter->wol;
5007 netif_device_detach(netdev);
5009 if (netif_running(netdev)) {
5010 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
5011 e1000_down(adapter);
5015 /* Implement our own version of pci_save_state(pdev) because pci-
5016 * express adapters have 256-byte config spaces. */
5017 retval = e1000_pci_save_state(adapter);
5022 status = E1000_READ_REG(&adapter->hw, STATUS);
5023 if (status & E1000_STATUS_LU)
5024 wufc &= ~E1000_WUFC_LNKC;
5027 e1000_setup_rctl(adapter);
5028 e1000_set_multi(netdev);
5030 /* turn on all-multi mode if wake on multicast is enabled */
5031 if (wufc & E1000_WUFC_MC) {
5032 rctl = E1000_READ_REG(&adapter->hw, RCTL);
5033 rctl |= E1000_RCTL_MPE;
5034 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
5037 if (adapter->hw.mac_type >= e1000_82540) {
5038 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
5039 /* advertise wake from D3Cold */
5040 #define E1000_CTRL_ADVD3WUC 0x00100000
5041 /* phy power management enable */
5042 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5043 ctrl |= E1000_CTRL_ADVD3WUC |
5044 E1000_CTRL_EN_PHY_PWR_MGMT;
5045 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
5048 if (adapter->hw.media_type == e1000_media_type_fiber ||
5049 adapter->hw.media_type == e1000_media_type_internal_serdes) {
5050 /* keep the laser running in D3 */
5051 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
5052 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
5053 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
5056 /* Allow time for pending master requests to run */
5057 e1000_disable_pciex_master(&adapter->hw);
5059 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
5060 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
5061 pci_enable_wake(pdev, PCI_D3hot, 1);
5062 pci_enable_wake(pdev, PCI_D3cold, 1);
5064 E1000_WRITE_REG(&adapter->hw, WUC, 0);
5065 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
5066 pci_enable_wake(pdev, PCI_D3hot, 0);
5067 pci_enable_wake(pdev, PCI_D3cold, 0);
5070 if (adapter->hw.mac_type >= e1000_82540 &&
5071 adapter->hw.mac_type < e1000_82571 &&
5072 adapter->hw.media_type == e1000_media_type_copper) {
5073 manc = E1000_READ_REG(&adapter->hw, MANC);
5074 if (manc & E1000_MANC_SMBUS_EN) {
5075 manc |= E1000_MANC_ARP_EN;
5076 E1000_WRITE_REG(&adapter->hw, MANC, manc);
5077 pci_enable_wake(pdev, PCI_D3hot, 1);
5078 pci_enable_wake(pdev, PCI_D3cold, 1);
5082 if (adapter->hw.phy_type == e1000_phy_igp_3)
5083 e1000_phy_powerdown_workaround(&adapter->hw);
5085 if (netif_running(netdev))
5086 e1000_free_irq(adapter);
5088 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5089 * would have already happened in close and is redundant. */
5090 e1000_release_hw_control(adapter);
5092 pci_disable_device(pdev);
5094 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5101 e1000_resume(struct pci_dev *pdev)
5103 struct net_device *netdev = pci_get_drvdata(pdev);
5104 struct e1000_adapter *adapter = netdev_priv(netdev);
5107 pci_set_power_state(pdev, PCI_D0);
5108 e1000_pci_restore_state(adapter);
5109 if ((err = pci_enable_device(pdev))) {
5110 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
5113 pci_set_master(pdev);
5115 pci_enable_wake(pdev, PCI_D3hot, 0);
5116 pci_enable_wake(pdev, PCI_D3cold, 0);
5118 if (netif_running(netdev) && (err = e1000_request_irq(adapter)))
5121 e1000_power_up_phy(adapter);
5122 e1000_reset(adapter);
5123 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
5125 if (netif_running(netdev))
5128 netif_device_attach(netdev);
5130 if (adapter->hw.mac_type >= e1000_82540 &&
5131 adapter->hw.mac_type < e1000_82571 &&
5132 adapter->hw.media_type == e1000_media_type_copper) {
5133 manc = E1000_READ_REG(&adapter->hw, MANC);
5134 manc &= ~(E1000_MANC_ARP_EN);
5135 E1000_WRITE_REG(&adapter->hw, MANC, manc);
5138 /* If the controller is 82573 and f/w is AMT, do not set
5139 * DRV_LOAD until the interface is up. For all other cases,
5140 * let the f/w know that the h/w is now under the control
5142 if (adapter->hw.mac_type != e1000_82573 ||
5143 !e1000_check_mng_mode(&adapter->hw))
5144 e1000_get_hw_control(adapter);
5150 static void e1000_shutdown(struct pci_dev *pdev)
5152 e1000_suspend(pdev, PMSG_SUSPEND);
5155 #ifdef CONFIG_NET_POLL_CONTROLLER
5157 * Polling 'interrupt' - used by things like netconsole to send skbs
5158 * without having to re-enable interrupts. It's not called while
5159 * the interrupt routine is executing.
5162 e1000_netpoll(struct net_device *netdev)
5164 struct e1000_adapter *adapter = netdev_priv(netdev);
5166 disable_irq(adapter->pdev->irq);
5167 e1000_intr(adapter->pdev->irq, netdev);
5168 e1000_clean_tx_irq(adapter, adapter->tx_ring);
5169 #ifndef CONFIG_E1000_NAPI
5170 adapter->clean_rx(adapter, adapter->rx_ring);
5172 enable_irq(adapter->pdev->irq);
5177 * e1000_io_error_detected - called when PCI error is detected
5178 * @pdev: Pointer to PCI device
5179 * @state: The current pci conneection state
5181 * This function is called after a PCI bus error affecting
5182 * this device has been detected.
5184 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
5186 struct net_device *netdev = pci_get_drvdata(pdev);
5187 struct e1000_adapter *adapter = netdev->priv;
5189 netif_device_detach(netdev);
5191 if (netif_running(netdev))
5192 e1000_down(adapter);
5193 pci_disable_device(pdev);
5195 /* Request a slot slot reset. */
5196 return PCI_ERS_RESULT_NEED_RESET;
5200 * e1000_io_slot_reset - called after the pci bus has been reset.
5201 * @pdev: Pointer to PCI device
5203 * Restart the card from scratch, as if from a cold-boot. Implementation
5204 * resembles the first-half of the e1000_resume routine.
5206 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5208 struct net_device *netdev = pci_get_drvdata(pdev);
5209 struct e1000_adapter *adapter = netdev->priv;
5211 if (pci_enable_device(pdev)) {
5212 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
5213 return PCI_ERS_RESULT_DISCONNECT;
5215 pci_set_master(pdev);
5217 pci_enable_wake(pdev, PCI_D3hot, 0);
5218 pci_enable_wake(pdev, PCI_D3cold, 0);
5220 e1000_reset(adapter);
5221 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
5223 return PCI_ERS_RESULT_RECOVERED;
5227 * e1000_io_resume - called when traffic can start flowing again.
5228 * @pdev: Pointer to PCI device
5230 * This callback is called when the error recovery driver tells us that
5231 * its OK to resume normal operation. Implementation resembles the
5232 * second-half of the e1000_resume routine.
5234 static void e1000_io_resume(struct pci_dev *pdev)
5236 struct net_device *netdev = pci_get_drvdata(pdev);
5237 struct e1000_adapter *adapter = netdev->priv;
5238 uint32_t manc, swsm;
5240 if (netif_running(netdev)) {
5241 if (e1000_up(adapter)) {
5242 printk("e1000: can't bring device back up after reset\n");
5247 netif_device_attach(netdev);
5249 if (adapter->hw.mac_type >= e1000_82540 &&
5250 adapter->hw.mac_type < e1000_82571 &&
5251 adapter->hw.media_type == e1000_media_type_copper) {
5252 manc = E1000_READ_REG(&adapter->hw, MANC);
5253 manc &= ~(E1000_MANC_ARP_EN);
5254 E1000_WRITE_REG(&adapter->hw, MANC, manc);
5257 switch (adapter->hw.mac_type) {
5259 swsm = E1000_READ_REG(&adapter->hw, SWSM);
5260 E1000_WRITE_REG(&adapter->hw, SWSM,
5261 swsm | E1000_SWSM_DRV_LOAD);
5267 if (netif_running(netdev))
5268 mod_timer(&adapter->watchdog_timer, jiffies);