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29#include "e1000.h"
30#include <net/ip6_checksum.h>
31#include <linux/io.h>
32#include <linux/prefetch.h>
33#include <linux/bitops.h>
34#include <linux/if_vlan.h>
35
36char e1000_driver_name[] = "e1000";
37static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
38#define DRV_VERSION "7.3.21-k8-NAPI"
39const char e1000_driver_version[] = DRV_VERSION;
40static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
41
42
43
44
45
46
47
48
49static const struct pci_device_id e1000_pci_tbl[] = {
50 INTEL_E1000_ETHERNET_DEVICE(0x1000),
51 INTEL_E1000_ETHERNET_DEVICE(0x1001),
52 INTEL_E1000_ETHERNET_DEVICE(0x1004),
53 INTEL_E1000_ETHERNET_DEVICE(0x1008),
54 INTEL_E1000_ETHERNET_DEVICE(0x1009),
55 INTEL_E1000_ETHERNET_DEVICE(0x100C),
56 INTEL_E1000_ETHERNET_DEVICE(0x100D),
57 INTEL_E1000_ETHERNET_DEVICE(0x100E),
58 INTEL_E1000_ETHERNET_DEVICE(0x100F),
59 INTEL_E1000_ETHERNET_DEVICE(0x1010),
60 INTEL_E1000_ETHERNET_DEVICE(0x1011),
61 INTEL_E1000_ETHERNET_DEVICE(0x1012),
62 INTEL_E1000_ETHERNET_DEVICE(0x1013),
63 INTEL_E1000_ETHERNET_DEVICE(0x1014),
64 INTEL_E1000_ETHERNET_DEVICE(0x1015),
65 INTEL_E1000_ETHERNET_DEVICE(0x1016),
66 INTEL_E1000_ETHERNET_DEVICE(0x1017),
67 INTEL_E1000_ETHERNET_DEVICE(0x1018),
68 INTEL_E1000_ETHERNET_DEVICE(0x1019),
69 INTEL_E1000_ETHERNET_DEVICE(0x101A),
70 INTEL_E1000_ETHERNET_DEVICE(0x101D),
71 INTEL_E1000_ETHERNET_DEVICE(0x101E),
72 INTEL_E1000_ETHERNET_DEVICE(0x1026),
73 INTEL_E1000_ETHERNET_DEVICE(0x1027),
74 INTEL_E1000_ETHERNET_DEVICE(0x1028),
75 INTEL_E1000_ETHERNET_DEVICE(0x1075),
76 INTEL_E1000_ETHERNET_DEVICE(0x1076),
77 INTEL_E1000_ETHERNET_DEVICE(0x1077),
78 INTEL_E1000_ETHERNET_DEVICE(0x1078),
79 INTEL_E1000_ETHERNET_DEVICE(0x1079),
80 INTEL_E1000_ETHERNET_DEVICE(0x107A),
81 INTEL_E1000_ETHERNET_DEVICE(0x107B),
82 INTEL_E1000_ETHERNET_DEVICE(0x107C),
83 INTEL_E1000_ETHERNET_DEVICE(0x108A),
84 INTEL_E1000_ETHERNET_DEVICE(0x1099),
85 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
86 INTEL_E1000_ETHERNET_DEVICE(0x2E6E),
87
88 {0,}
89};
90
91MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
92
93int e1000_up(struct e1000_adapter *adapter);
94void e1000_down(struct e1000_adapter *adapter);
95void e1000_reinit_locked(struct e1000_adapter *adapter);
96void e1000_reset(struct e1000_adapter *adapter);
97int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
98int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
99void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
100void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
101static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
102 struct e1000_tx_ring *txdr);
103static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
104 struct e1000_rx_ring *rxdr);
105static void e1000_free_tx_resources(struct e1000_adapter *adapter,
106 struct e1000_tx_ring *tx_ring);
107static void e1000_free_rx_resources(struct e1000_adapter *adapter,
108 struct e1000_rx_ring *rx_ring);
109void e1000_update_stats(struct e1000_adapter *adapter);
110
111static int e1000_init_module(void);
112static void e1000_exit_module(void);
113static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
114static void e1000_remove(struct pci_dev *pdev);
115static int e1000_alloc_queues(struct e1000_adapter *adapter);
116static int e1000_sw_init(struct e1000_adapter *adapter);
117static int e1000_open(struct net_device *netdev);
118static int e1000_close(struct net_device *netdev);
119static void e1000_configure_tx(struct e1000_adapter *adapter);
120static void e1000_configure_rx(struct e1000_adapter *adapter);
121static void e1000_setup_rctl(struct e1000_adapter *adapter);
122static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
123static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
124static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
125 struct e1000_tx_ring *tx_ring);
126static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
127 struct e1000_rx_ring *rx_ring);
128static void e1000_set_rx_mode(struct net_device *netdev);
129static void e1000_update_phy_info_task(struct work_struct *work);
130static void e1000_watchdog(struct work_struct *work);
131static void e1000_82547_tx_fifo_stall_task(struct work_struct *work);
132static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
133 struct net_device *netdev);
134static struct net_device_stats *e1000_get_stats(struct net_device *netdev);
135static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
136static int e1000_set_mac(struct net_device *netdev, void *p);
137static irqreturn_t e1000_intr(int irq, void *data);
138static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
139 struct e1000_tx_ring *tx_ring);
140static int e1000_clean(struct napi_struct *napi, int budget);
141static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
142 struct e1000_rx_ring *rx_ring,
143 int *work_done, int work_to_do);
144static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
145 struct e1000_rx_ring *rx_ring,
146 int *work_done, int work_to_do);
147static void e1000_alloc_dummy_rx_buffers(struct e1000_adapter *adapter,
148 struct e1000_rx_ring *rx_ring,
149 int cleaned_count)
150{
151}
152static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
153 struct e1000_rx_ring *rx_ring,
154 int cleaned_count);
155static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
156 struct e1000_rx_ring *rx_ring,
157 int cleaned_count);
158static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
159static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
160 int cmd);
161static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
162static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
163static void e1000_tx_timeout(struct net_device *dev);
164static void e1000_reset_task(struct work_struct *work);
165static void e1000_smartspeed(struct e1000_adapter *adapter);
166static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
167 struct sk_buff *skb);
168
169static bool e1000_vlan_used(struct e1000_adapter *adapter);
170static void e1000_vlan_mode(struct net_device *netdev,
171 netdev_features_t features);
172static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter,
173 bool filter_on);
174static int e1000_vlan_rx_add_vid(struct net_device *netdev,
175 __be16 proto, u16 vid);
176static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
177 __be16 proto, u16 vid);
178static void e1000_restore_vlan(struct e1000_adapter *adapter);
179
180#ifdef CONFIG_PM
181static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
182static int e1000_resume(struct pci_dev *pdev);
183#endif
184static void e1000_shutdown(struct pci_dev *pdev);
185
186#ifdef CONFIG_NET_POLL_CONTROLLER
187
188static void e1000_netpoll (struct net_device *netdev);
189#endif
190
191#define COPYBREAK_DEFAULT 256
192static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
193module_param(copybreak, uint, 0644);
194MODULE_PARM_DESC(copybreak,
195 "Maximum size of packet that is copied to a new buffer on receive");
196
197static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
198 pci_channel_state_t state);
199static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
200static void e1000_io_resume(struct pci_dev *pdev);
201
202static const struct pci_error_handlers e1000_err_handler = {
203 .error_detected = e1000_io_error_detected,
204 .slot_reset = e1000_io_slot_reset,
205 .resume = e1000_io_resume,
206};
207
208static struct pci_driver e1000_driver = {
209 .name = e1000_driver_name,
210 .id_table = e1000_pci_tbl,
211 .probe = e1000_probe,
212 .remove = e1000_remove,
213#ifdef CONFIG_PM
214
215 .suspend = e1000_suspend,
216 .resume = e1000_resume,
217#endif
218 .shutdown = e1000_shutdown,
219 .err_handler = &e1000_err_handler
220};
221
222MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
223MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
224MODULE_LICENSE("GPL");
225MODULE_VERSION(DRV_VERSION);
226
227#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
228static int debug = -1;
229module_param(debug, int, 0);
230MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
231
232
233
234
235
236
237struct net_device *e1000_get_hw_dev(struct e1000_hw *hw)
238{
239 struct e1000_adapter *adapter = hw->back;
240 return adapter->netdev;
241}
242
243
244
245
246
247
248
249static int __init e1000_init_module(void)
250{
251 int ret;
252 pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version);
253
254 pr_info("%s\n", e1000_copyright);
255
256 ret = pci_register_driver(&e1000_driver);
257 if (copybreak != COPYBREAK_DEFAULT) {
258 if (copybreak == 0)
259 pr_info("copybreak disabled\n");
260 else
261 pr_info("copybreak enabled for "
262 "packets <= %u bytes\n", copybreak);
263 }
264 return ret;
265}
266
267module_init(e1000_init_module);
268
269
270
271
272
273
274
275static void __exit e1000_exit_module(void)
276{
277 pci_unregister_driver(&e1000_driver);
278}
279
280module_exit(e1000_exit_module);
281
282static int e1000_request_irq(struct e1000_adapter *adapter)
283{
284 struct net_device *netdev = adapter->netdev;
285 irq_handler_t handler = e1000_intr;
286 int irq_flags = IRQF_SHARED;
287 int err;
288
289 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
290 netdev);
291 if (err) {
292 e_err(probe, "Unable to allocate interrupt Error: %d\n", err);
293 }
294
295 return err;
296}
297
298static void e1000_free_irq(struct e1000_adapter *adapter)
299{
300 struct net_device *netdev = adapter->netdev;
301
302 free_irq(adapter->pdev->irq, netdev);
303}
304
305
306
307
308
309static void e1000_irq_disable(struct e1000_adapter *adapter)
310{
311 struct e1000_hw *hw = &adapter->hw;
312
313 ew32(IMC, ~0);
314 E1000_WRITE_FLUSH();
315 synchronize_irq(adapter->pdev->irq);
316}
317
318
319
320
321
322static void e1000_irq_enable(struct e1000_adapter *adapter)
323{
324 struct e1000_hw *hw = &adapter->hw;
325
326 ew32(IMS, IMS_ENABLE_MASK);
327 E1000_WRITE_FLUSH();
328}
329
330static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
331{
332 struct e1000_hw *hw = &adapter->hw;
333 struct net_device *netdev = adapter->netdev;
334 u16 vid = hw->mng_cookie.vlan_id;
335 u16 old_vid = adapter->mng_vlan_id;
336
337 if (!e1000_vlan_used(adapter))
338 return;
339
340 if (!test_bit(vid, adapter->active_vlans)) {
341 if (hw->mng_cookie.status &
342 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
343 e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
344 adapter->mng_vlan_id = vid;
345 } else {
346 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
347 }
348 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
349 (vid != old_vid) &&
350 !test_bit(old_vid, adapter->active_vlans))
351 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
352 old_vid);
353 } else {
354 adapter->mng_vlan_id = vid;
355 }
356}
357
358static void e1000_init_manageability(struct e1000_adapter *adapter)
359{
360 struct e1000_hw *hw = &adapter->hw;
361
362 if (adapter->en_mng_pt) {
363 u32 manc = er32(MANC);
364
365
366 manc &= ~(E1000_MANC_ARP_EN);
367
368 ew32(MANC, manc);
369 }
370}
371
372static void e1000_release_manageability(struct e1000_adapter *adapter)
373{
374 struct e1000_hw *hw = &adapter->hw;
375
376 if (adapter->en_mng_pt) {
377 u32 manc = er32(MANC);
378
379
380 manc |= E1000_MANC_ARP_EN;
381
382 ew32(MANC, manc);
383 }
384}
385
386
387
388
389
390static void e1000_configure(struct e1000_adapter *adapter)
391{
392 struct net_device *netdev = adapter->netdev;
393 int i;
394
395 e1000_set_rx_mode(netdev);
396
397 e1000_restore_vlan(adapter);
398 e1000_init_manageability(adapter);
399
400 e1000_configure_tx(adapter);
401 e1000_setup_rctl(adapter);
402 e1000_configure_rx(adapter);
403
404
405
406
407 for (i = 0; i < adapter->num_rx_queues; i++) {
408 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
409 adapter->alloc_rx_buf(adapter, ring,
410 E1000_DESC_UNUSED(ring));
411 }
412}
413
414int e1000_up(struct e1000_adapter *adapter)
415{
416 struct e1000_hw *hw = &adapter->hw;
417
418
419 e1000_configure(adapter);
420
421 clear_bit(__E1000_DOWN, &adapter->flags);
422
423 napi_enable(&adapter->napi);
424
425 e1000_irq_enable(adapter);
426
427 netif_wake_queue(adapter->netdev);
428
429
430 ew32(ICS, E1000_ICS_LSC);
431 return 0;
432}
433
434
435
436
437
438
439
440
441
442void e1000_power_up_phy(struct e1000_adapter *adapter)
443{
444 struct e1000_hw *hw = &adapter->hw;
445 u16 mii_reg = 0;
446
447
448 if (hw->media_type == e1000_media_type_copper) {
449
450
451
452 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
453 mii_reg &= ~MII_CR_POWER_DOWN;
454 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
455 }
456}
457
458static void e1000_power_down_phy(struct e1000_adapter *adapter)
459{
460 struct e1000_hw *hw = &adapter->hw;
461
462
463
464
465
466
467
468 if (!adapter->wol && hw->mac_type >= e1000_82540 &&
469 hw->media_type == e1000_media_type_copper) {
470 u16 mii_reg = 0;
471
472 switch (hw->mac_type) {
473 case e1000_82540:
474 case e1000_82545:
475 case e1000_82545_rev_3:
476 case e1000_82546:
477 case e1000_ce4100:
478 case e1000_82546_rev_3:
479 case e1000_82541:
480 case e1000_82541_rev_2:
481 case e1000_82547:
482 case e1000_82547_rev_2:
483 if (er32(MANC) & E1000_MANC_SMBUS_EN)
484 goto out;
485 break;
486 default:
487 goto out;
488 }
489 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
490 mii_reg |= MII_CR_POWER_DOWN;
491 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
492 msleep(1);
493 }
494out:
495 return;
496}
497
498static void e1000_down_and_stop(struct e1000_adapter *adapter)
499{
500 set_bit(__E1000_DOWN, &adapter->flags);
501
502 cancel_delayed_work_sync(&adapter->watchdog_task);
503
504
505
506
507
508
509
510 cancel_delayed_work_sync(&adapter->phy_info_task);
511 cancel_delayed_work_sync(&adapter->fifo_stall_task);
512
513
514 if (!test_bit(__E1000_RESETTING, &adapter->flags))
515 cancel_work_sync(&adapter->reset_task);
516}
517
518void e1000_down(struct e1000_adapter *adapter)
519{
520 struct e1000_hw *hw = &adapter->hw;
521 struct net_device *netdev = adapter->netdev;
522 u32 rctl, tctl;
523
524 netif_carrier_off(netdev);
525
526
527 rctl = er32(RCTL);
528 ew32(RCTL, rctl & ~E1000_RCTL_EN);
529
530
531 netif_tx_disable(netdev);
532
533
534 tctl = er32(TCTL);
535 tctl &= ~E1000_TCTL_EN;
536 ew32(TCTL, tctl);
537
538 E1000_WRITE_FLUSH();
539 msleep(10);
540
541 napi_disable(&adapter->napi);
542
543 e1000_irq_disable(adapter);
544
545
546
547
548
549 e1000_down_and_stop(adapter);
550
551 adapter->link_speed = 0;
552 adapter->link_duplex = 0;
553
554 e1000_reset(adapter);
555 e1000_clean_all_tx_rings(adapter);
556 e1000_clean_all_rx_rings(adapter);
557}
558
559void e1000_reinit_locked(struct e1000_adapter *adapter)
560{
561 WARN_ON(in_interrupt());
562 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
563 msleep(1);
564 e1000_down(adapter);
565 e1000_up(adapter);
566 clear_bit(__E1000_RESETTING, &adapter->flags);
567}
568
569void e1000_reset(struct e1000_adapter *adapter)
570{
571 struct e1000_hw *hw = &adapter->hw;
572 u32 pba = 0, tx_space, min_tx_space, min_rx_space;
573 bool legacy_pba_adjust = false;
574 u16 hwm;
575
576
577
578
579
580 switch (hw->mac_type) {
581 case e1000_82542_rev2_0:
582 case e1000_82542_rev2_1:
583 case e1000_82543:
584 case e1000_82544:
585 case e1000_82540:
586 case e1000_82541:
587 case e1000_82541_rev_2:
588 legacy_pba_adjust = true;
589 pba = E1000_PBA_48K;
590 break;
591 case e1000_82545:
592 case e1000_82545_rev_3:
593 case e1000_82546:
594 case e1000_ce4100:
595 case e1000_82546_rev_3:
596 pba = E1000_PBA_48K;
597 break;
598 case e1000_82547:
599 case e1000_82547_rev_2:
600 legacy_pba_adjust = true;
601 pba = E1000_PBA_30K;
602 break;
603 case e1000_undefined:
604 case e1000_num_macs:
605 break;
606 }
607
608 if (legacy_pba_adjust) {
609 if (hw->max_frame_size > E1000_RXBUFFER_8192)
610 pba -= 8;
611
612 if (hw->mac_type == e1000_82547) {
613 adapter->tx_fifo_head = 0;
614 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
615 adapter->tx_fifo_size =
616 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
617 atomic_set(&adapter->tx_fifo_stall, 0);
618 }
619 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
620
621 ew32(PBA, pba);
622
623
624
625
626
627
628
629
630 pba = er32(PBA);
631
632 tx_space = pba >> 16;
633
634 pba &= 0xffff;
635
636
637
638 min_tx_space = (hw->max_frame_size +
639 sizeof(struct e1000_tx_desc) -
640 ETH_FCS_LEN) * 2;
641 min_tx_space = ALIGN(min_tx_space, 1024);
642 min_tx_space >>= 10;
643
644 min_rx_space = hw->max_frame_size;
645 min_rx_space = ALIGN(min_rx_space, 1024);
646 min_rx_space >>= 10;
647
648
649
650
651
652 if (tx_space < min_tx_space &&
653 ((min_tx_space - tx_space) < pba)) {
654 pba = pba - (min_tx_space - tx_space);
655
656
657 switch (hw->mac_type) {
658 case e1000_82545 ... e1000_82546_rev_3:
659 pba &= ~(E1000_PBA_8K - 1);
660 break;
661 default:
662 break;
663 }
664
665
666
667
668 if (pba < min_rx_space)
669 pba = min_rx_space;
670 }
671 }
672
673 ew32(PBA, pba);
674
675
676
677
678
679
680
681
682
683
684 hwm = min(((pba << 10) * 9 / 10),
685 ((pba << 10) - hw->max_frame_size));
686
687 hw->fc_high_water = hwm & 0xFFF8;
688 hw->fc_low_water = hw->fc_high_water - 8;
689 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
690 hw->fc_send_xon = 1;
691 hw->fc = hw->original_fc;
692
693
694 e1000_reset_hw(hw);
695 if (hw->mac_type >= e1000_82544)
696 ew32(WUC, 0);
697
698 if (e1000_init_hw(hw))
699 e_dev_err("Hardware Error\n");
700 e1000_update_mng_vlan(adapter);
701
702
703 if (hw->mac_type >= e1000_82544 &&
704 hw->autoneg == 1 &&
705 hw->autoneg_advertised == ADVERTISE_1000_FULL) {
706 u32 ctrl = er32(CTRL);
707
708
709
710
711 ctrl &= ~E1000_CTRL_SWDPIN3;
712 ew32(CTRL, ctrl);
713 }
714
715
716 ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
717
718 e1000_reset_adaptive(hw);
719 e1000_phy_get_info(hw, &adapter->phy_info);
720
721 e1000_release_manageability(adapter);
722}
723
724
725static void e1000_dump_eeprom(struct e1000_adapter *adapter)
726{
727 struct net_device *netdev = adapter->netdev;
728 struct ethtool_eeprom eeprom;
729 const struct ethtool_ops *ops = netdev->ethtool_ops;
730 u8 *data;
731 int i;
732 u16 csum_old, csum_new = 0;
733
734 eeprom.len = ops->get_eeprom_len(netdev);
735 eeprom.offset = 0;
736
737 data = kmalloc(eeprom.len, GFP_KERNEL);
738 if (!data)
739 return;
740
741 ops->get_eeprom(netdev, &eeprom, data);
742
743 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
744 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
745 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
746 csum_new += data[i] + (data[i + 1] << 8);
747 csum_new = EEPROM_SUM - csum_new;
748
749 pr_err("/*********************/\n");
750 pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old);
751 pr_err("Calculated : 0x%04x\n", csum_new);
752
753 pr_err("Offset Values\n");
754 pr_err("======== ======\n");
755 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
756
757 pr_err("Include this output when contacting your support provider.\n");
758 pr_err("This is not a software error! Something bad happened to\n");
759 pr_err("your hardware or EEPROM image. Ignoring this problem could\n");
760 pr_err("result in further problems, possibly loss of data,\n");
761 pr_err("corruption or system hangs!\n");
762 pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n");
763 pr_err("which is invalid and requires you to set the proper MAC\n");
764 pr_err("address manually before continuing to enable this network\n");
765 pr_err("device. Please inspect the EEPROM dump and report the\n");
766 pr_err("issue to your hardware vendor or Intel Customer Support.\n");
767 pr_err("/*********************/\n");
768
769 kfree(data);
770}
771
772
773
774
775
776
777
778static int e1000_is_need_ioport(struct pci_dev *pdev)
779{
780 switch (pdev->device) {
781 case E1000_DEV_ID_82540EM:
782 case E1000_DEV_ID_82540EM_LOM:
783 case E1000_DEV_ID_82540EP:
784 case E1000_DEV_ID_82540EP_LOM:
785 case E1000_DEV_ID_82540EP_LP:
786 case E1000_DEV_ID_82541EI:
787 case E1000_DEV_ID_82541EI_MOBILE:
788 case E1000_DEV_ID_82541ER:
789 case E1000_DEV_ID_82541ER_LOM:
790 case E1000_DEV_ID_82541GI:
791 case E1000_DEV_ID_82541GI_LF:
792 case E1000_DEV_ID_82541GI_MOBILE:
793 case E1000_DEV_ID_82544EI_COPPER:
794 case E1000_DEV_ID_82544EI_FIBER:
795 case E1000_DEV_ID_82544GC_COPPER:
796 case E1000_DEV_ID_82544GC_LOM:
797 case E1000_DEV_ID_82545EM_COPPER:
798 case E1000_DEV_ID_82545EM_FIBER:
799 case E1000_DEV_ID_82546EB_COPPER:
800 case E1000_DEV_ID_82546EB_FIBER:
801 case E1000_DEV_ID_82546EB_QUAD_COPPER:
802 return true;
803 default:
804 return false;
805 }
806}
807
808static netdev_features_t e1000_fix_features(struct net_device *netdev,
809 netdev_features_t features)
810{
811
812
813
814 if (features & NETIF_F_HW_VLAN_CTAG_RX)
815 features |= NETIF_F_HW_VLAN_CTAG_TX;
816 else
817 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
818
819 return features;
820}
821
822static int e1000_set_features(struct net_device *netdev,
823 netdev_features_t features)
824{
825 struct e1000_adapter *adapter = netdev_priv(netdev);
826 netdev_features_t changed = features ^ netdev->features;
827
828 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
829 e1000_vlan_mode(netdev, features);
830
831 if (!(changed & (NETIF_F_RXCSUM | NETIF_F_RXALL)))
832 return 0;
833
834 netdev->features = features;
835 adapter->rx_csum = !!(features & NETIF_F_RXCSUM);
836
837 if (netif_running(netdev))
838 e1000_reinit_locked(adapter);
839 else
840 e1000_reset(adapter);
841
842 return 0;
843}
844
845static const struct net_device_ops e1000_netdev_ops = {
846 .ndo_open = e1000_open,
847 .ndo_stop = e1000_close,
848 .ndo_start_xmit = e1000_xmit_frame,
849 .ndo_get_stats = e1000_get_stats,
850 .ndo_set_rx_mode = e1000_set_rx_mode,
851 .ndo_set_mac_address = e1000_set_mac,
852 .ndo_tx_timeout = e1000_tx_timeout,
853 .ndo_change_mtu = e1000_change_mtu,
854 .ndo_do_ioctl = e1000_ioctl,
855 .ndo_validate_addr = eth_validate_addr,
856 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
857 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
858#ifdef CONFIG_NET_POLL_CONTROLLER
859 .ndo_poll_controller = e1000_netpoll,
860#endif
861 .ndo_fix_features = e1000_fix_features,
862 .ndo_set_features = e1000_set_features,
863};
864
865
866
867
868
869
870
871
872
873
874
875
876static int e1000_init_hw_struct(struct e1000_adapter *adapter,
877 struct e1000_hw *hw)
878{
879 struct pci_dev *pdev = adapter->pdev;
880
881
882 hw->vendor_id = pdev->vendor;
883 hw->device_id = pdev->device;
884 hw->subsystem_vendor_id = pdev->subsystem_vendor;
885 hw->subsystem_id = pdev->subsystem_device;
886 hw->revision_id = pdev->revision;
887
888 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
889
890 hw->max_frame_size = adapter->netdev->mtu +
891 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
892 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
893
894
895 if (e1000_set_mac_type(hw)) {
896 e_err(probe, "Unknown MAC Type\n");
897 return -EIO;
898 }
899
900 switch (hw->mac_type) {
901 default:
902 break;
903 case e1000_82541:
904 case e1000_82547:
905 case e1000_82541_rev_2:
906 case e1000_82547_rev_2:
907 hw->phy_init_script = 1;
908 break;
909 }
910
911 e1000_set_media_type(hw);
912 e1000_get_bus_info(hw);
913
914 hw->wait_autoneg_complete = false;
915 hw->tbi_compatibility_en = true;
916 hw->adaptive_ifs = true;
917
918
919
920 if (hw->media_type == e1000_media_type_copper) {
921 hw->mdix = AUTO_ALL_MODES;
922 hw->disable_polarity_correction = false;
923 hw->master_slave = E1000_MASTER_SLAVE;
924 }
925
926 return 0;
927}
928
929
930
931
932
933
934
935
936
937
938
939
940static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
941{
942 struct net_device *netdev;
943 struct e1000_adapter *adapter;
944 struct e1000_hw *hw;
945
946 static int cards_found;
947 static int global_quad_port_a;
948 int i, err, pci_using_dac;
949 u16 eeprom_data = 0;
950 u16 tmp = 0;
951 u16 eeprom_apme_mask = E1000_EEPROM_APME;
952 int bars, need_ioport;
953
954
955 need_ioport = e1000_is_need_ioport(pdev);
956 if (need_ioport) {
957 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
958 err = pci_enable_device(pdev);
959 } else {
960 bars = pci_select_bars(pdev, IORESOURCE_MEM);
961 err = pci_enable_device_mem(pdev);
962 }
963 if (err)
964 return err;
965
966 err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
967 if (err)
968 goto err_pci_reg;
969
970 pci_set_master(pdev);
971 err = pci_save_state(pdev);
972 if (err)
973 goto err_alloc_etherdev;
974
975 err = -ENOMEM;
976 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
977 if (!netdev)
978 goto err_alloc_etherdev;
979
980 SET_NETDEV_DEV(netdev, &pdev->dev);
981
982 pci_set_drvdata(pdev, netdev);
983 adapter = netdev_priv(netdev);
984 adapter->netdev = netdev;
985 adapter->pdev = pdev;
986 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
987 adapter->bars = bars;
988 adapter->need_ioport = need_ioport;
989
990 hw = &adapter->hw;
991 hw->back = adapter;
992
993 err = -EIO;
994 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0);
995 if (!hw->hw_addr)
996 goto err_ioremap;
997
998 if (adapter->need_ioport) {
999 for (i = BAR_1; i <= BAR_5; i++) {
1000 if (pci_resource_len(pdev, i) == 0)
1001 continue;
1002 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1003 hw->io_base = pci_resource_start(pdev, i);
1004 break;
1005 }
1006 }
1007 }
1008
1009
1010 err = e1000_init_hw_struct(adapter, hw);
1011 if (err)
1012 goto err_sw_init;
1013
1014
1015
1016
1017
1018 pci_using_dac = 0;
1019 if ((hw->bus_type == e1000_bus_type_pcix) &&
1020 !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
1021 pci_using_dac = 1;
1022 } else {
1023 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1024 if (err) {
1025 pr_err("No usable DMA config, aborting\n");
1026 goto err_dma;
1027 }
1028 }
1029
1030 netdev->netdev_ops = &e1000_netdev_ops;
1031 e1000_set_ethtool_ops(netdev);
1032 netdev->watchdog_timeo = 5 * HZ;
1033 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
1034
1035 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
1036
1037 adapter->bd_number = cards_found;
1038
1039
1040
1041 err = e1000_sw_init(adapter);
1042 if (err)
1043 goto err_sw_init;
1044
1045 err = -EIO;
1046 if (hw->mac_type == e1000_ce4100) {
1047 hw->ce4100_gbe_mdio_base_virt =
1048 ioremap(pci_resource_start(pdev, BAR_1),
1049 pci_resource_len(pdev, BAR_1));
1050
1051 if (!hw->ce4100_gbe_mdio_base_virt)
1052 goto err_mdio_ioremap;
1053 }
1054
1055 if (hw->mac_type >= e1000_82543) {
1056 netdev->hw_features = NETIF_F_SG |
1057 NETIF_F_HW_CSUM |
1058 NETIF_F_HW_VLAN_CTAG_RX;
1059 netdev->features = NETIF_F_HW_VLAN_CTAG_TX |
1060 NETIF_F_HW_VLAN_CTAG_FILTER;
1061 }
1062
1063 if ((hw->mac_type >= e1000_82544) &&
1064 (hw->mac_type != e1000_82547))
1065 netdev->hw_features |= NETIF_F_TSO;
1066
1067 netdev->priv_flags |= IFF_SUPP_NOFCS;
1068
1069 netdev->features |= netdev->hw_features;
1070 netdev->hw_features |= (NETIF_F_RXCSUM |
1071 NETIF_F_RXALL |
1072 NETIF_F_RXFCS);
1073
1074 if (pci_using_dac) {
1075 netdev->features |= NETIF_F_HIGHDMA;
1076 netdev->vlan_features |= NETIF_F_HIGHDMA;
1077 }
1078
1079 netdev->vlan_features |= (NETIF_F_TSO |
1080 NETIF_F_HW_CSUM |
1081 NETIF_F_SG);
1082
1083
1084 if (hw->device_id != E1000_DEV_ID_82545EM_COPPER ||
1085 hw->subsystem_vendor_id != PCI_VENDOR_ID_VMWARE)
1086 netdev->priv_flags |= IFF_UNICAST_FLT;
1087
1088 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
1089
1090
1091 if (e1000_init_eeprom_params(hw)) {
1092 e_err(probe, "EEPROM initialization failed\n");
1093 goto err_eeprom;
1094 }
1095
1096
1097
1098
1099
1100 e1000_reset_hw(hw);
1101
1102
1103 if (e1000_validate_eeprom_checksum(hw) < 0) {
1104 e_err(probe, "The EEPROM Checksum Is Not Valid\n");
1105 e1000_dump_eeprom(adapter);
1106
1107
1108
1109
1110
1111
1112
1113 memset(hw->mac_addr, 0, netdev->addr_len);
1114 } else {
1115
1116 if (e1000_read_mac_addr(hw))
1117 e_err(probe, "EEPROM Read Error\n");
1118 }
1119
1120 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
1121
1122 if (!is_valid_ether_addr(netdev->dev_addr))
1123 e_err(probe, "Invalid MAC Address\n");
1124
1125
1126 INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog);
1127 INIT_DELAYED_WORK(&adapter->fifo_stall_task,
1128 e1000_82547_tx_fifo_stall_task);
1129 INIT_DELAYED_WORK(&adapter->phy_info_task, e1000_update_phy_info_task);
1130 INIT_WORK(&adapter->reset_task, e1000_reset_task);
1131
1132 e1000_check_options(adapter);
1133
1134
1135
1136
1137
1138
1139 switch (hw->mac_type) {
1140 case e1000_82542_rev2_0:
1141 case e1000_82542_rev2_1:
1142 case e1000_82543:
1143 break;
1144 case e1000_82544:
1145 e1000_read_eeprom(hw,
1146 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
1147 eeprom_apme_mask = E1000_EEPROM_82544_APM;
1148 break;
1149 case e1000_82546:
1150 case e1000_82546_rev_3:
1151 if (er32(STATUS) & E1000_STATUS_FUNC_1) {
1152 e1000_read_eeprom(hw,
1153 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
1154 break;
1155 }
1156
1157 default:
1158 e1000_read_eeprom(hw,
1159 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
1160 break;
1161 }
1162 if (eeprom_data & eeprom_apme_mask)
1163 adapter->eeprom_wol |= E1000_WUFC_MAG;
1164
1165
1166
1167
1168
1169 switch (pdev->device) {
1170 case E1000_DEV_ID_82546GB_PCIE:
1171 adapter->eeprom_wol = 0;
1172 break;
1173 case E1000_DEV_ID_82546EB_FIBER:
1174 case E1000_DEV_ID_82546GB_FIBER:
1175
1176
1177
1178 if (er32(STATUS) & E1000_STATUS_FUNC_1)
1179 adapter->eeprom_wol = 0;
1180 break;
1181 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1182
1183 if (global_quad_port_a != 0)
1184 adapter->eeprom_wol = 0;
1185 else
1186 adapter->quad_port_a = true;
1187
1188 if (++global_quad_port_a == 4)
1189 global_quad_port_a = 0;
1190 break;
1191 }
1192
1193
1194 adapter->wol = adapter->eeprom_wol;
1195 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1196
1197
1198 if (hw->mac_type == e1000_ce4100) {
1199 for (i = 0; i < 32; i++) {
1200 hw->phy_addr = i;
1201 e1000_read_phy_reg(hw, PHY_ID2, &tmp);
1202
1203 if (tmp != 0 && tmp != 0xFF)
1204 break;
1205 }
1206
1207 if (i >= 32)
1208 goto err_eeprom;
1209 }
1210
1211
1212 e1000_reset(adapter);
1213
1214 strcpy(netdev->name, "eth%d");
1215 err = register_netdev(netdev);
1216 if (err)
1217 goto err_register;
1218
1219 e1000_vlan_filter_on_off(adapter, false);
1220
1221
1222 e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n",
1223 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""),
1224 ((hw->bus_speed == e1000_bus_speed_133) ? 133 :
1225 (hw->bus_speed == e1000_bus_speed_120) ? 120 :
1226 (hw->bus_speed == e1000_bus_speed_100) ? 100 :
1227 (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33),
1228 ((hw->bus_width == e1000_bus_width_64) ? 64 : 32),
1229 netdev->dev_addr);
1230
1231
1232 netif_carrier_off(netdev);
1233
1234 e_info(probe, "Intel(R) PRO/1000 Network Connection\n");
1235
1236 cards_found++;
1237 return 0;
1238
1239err_register:
1240err_eeprom:
1241 e1000_phy_hw_reset(hw);
1242
1243 if (hw->flash_address)
1244 iounmap(hw->flash_address);
1245 kfree(adapter->tx_ring);
1246 kfree(adapter->rx_ring);
1247err_dma:
1248err_sw_init:
1249err_mdio_ioremap:
1250 iounmap(hw->ce4100_gbe_mdio_base_virt);
1251 iounmap(hw->hw_addr);
1252err_ioremap:
1253 free_netdev(netdev);
1254err_alloc_etherdev:
1255 pci_release_selected_regions(pdev, bars);
1256err_pci_reg:
1257 pci_disable_device(pdev);
1258 return err;
1259}
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270static void e1000_remove(struct pci_dev *pdev)
1271{
1272 struct net_device *netdev = pci_get_drvdata(pdev);
1273 struct e1000_adapter *adapter = netdev_priv(netdev);
1274 struct e1000_hw *hw = &adapter->hw;
1275
1276 e1000_down_and_stop(adapter);
1277 e1000_release_manageability(adapter);
1278
1279 unregister_netdev(netdev);
1280
1281 e1000_phy_hw_reset(hw);
1282
1283 kfree(adapter->tx_ring);
1284 kfree(adapter->rx_ring);
1285
1286 if (hw->mac_type == e1000_ce4100)
1287 iounmap(hw->ce4100_gbe_mdio_base_virt);
1288 iounmap(hw->hw_addr);
1289 if (hw->flash_address)
1290 iounmap(hw->flash_address);
1291 pci_release_selected_regions(pdev, adapter->bars);
1292
1293 free_netdev(netdev);
1294
1295 pci_disable_device(pdev);
1296}
1297
1298
1299
1300
1301
1302
1303
1304
1305static int e1000_sw_init(struct e1000_adapter *adapter)
1306{
1307 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1308
1309 adapter->num_tx_queues = 1;
1310 adapter->num_rx_queues = 1;
1311
1312 if (e1000_alloc_queues(adapter)) {
1313 e_err(probe, "Unable to allocate memory for queues\n");
1314 return -ENOMEM;
1315 }
1316
1317
1318 e1000_irq_disable(adapter);
1319
1320 spin_lock_init(&adapter->stats_lock);
1321
1322 set_bit(__E1000_DOWN, &adapter->flags);
1323
1324 return 0;
1325}
1326
1327
1328
1329
1330
1331
1332
1333
1334static int e1000_alloc_queues(struct e1000_adapter *adapter)
1335{
1336 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
1337 sizeof(struct e1000_tx_ring), GFP_KERNEL);
1338 if (!adapter->tx_ring)
1339 return -ENOMEM;
1340
1341 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
1342 sizeof(struct e1000_rx_ring), GFP_KERNEL);
1343 if (!adapter->rx_ring) {
1344 kfree(adapter->tx_ring);
1345 return -ENOMEM;
1346 }
1347
1348 return E1000_SUCCESS;
1349}
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363static int e1000_open(struct net_device *netdev)
1364{
1365 struct e1000_adapter *adapter = netdev_priv(netdev);
1366 struct e1000_hw *hw = &adapter->hw;
1367 int err;
1368
1369
1370 if (test_bit(__E1000_TESTING, &adapter->flags))
1371 return -EBUSY;
1372
1373 netif_carrier_off(netdev);
1374
1375
1376 err = e1000_setup_all_tx_resources(adapter);
1377 if (err)
1378 goto err_setup_tx;
1379
1380
1381 err = e1000_setup_all_rx_resources(adapter);
1382 if (err)
1383 goto err_setup_rx;
1384
1385 e1000_power_up_phy(adapter);
1386
1387 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1388 if ((hw->mng_cookie.status &
1389 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1390 e1000_update_mng_vlan(adapter);
1391 }
1392
1393
1394
1395
1396
1397
1398 e1000_configure(adapter);
1399
1400 err = e1000_request_irq(adapter);
1401 if (err)
1402 goto err_req_irq;
1403
1404
1405 clear_bit(__E1000_DOWN, &adapter->flags);
1406
1407 napi_enable(&adapter->napi);
1408
1409 e1000_irq_enable(adapter);
1410
1411 netif_start_queue(netdev);
1412
1413
1414 ew32(ICS, E1000_ICS_LSC);
1415
1416 return E1000_SUCCESS;
1417
1418err_req_irq:
1419 e1000_power_down_phy(adapter);
1420 e1000_free_all_rx_resources(adapter);
1421err_setup_rx:
1422 e1000_free_all_tx_resources(adapter);
1423err_setup_tx:
1424 e1000_reset(adapter);
1425
1426 return err;
1427}
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440static int e1000_close(struct net_device *netdev)
1441{
1442 struct e1000_adapter *adapter = netdev_priv(netdev);
1443 struct e1000_hw *hw = &adapter->hw;
1444 int count = E1000_CHECK_RESET_COUNT;
1445
1446 while (test_bit(__E1000_RESETTING, &adapter->flags) && count--)
1447 usleep_range(10000, 20000);
1448
1449 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1450 e1000_down(adapter);
1451 e1000_power_down_phy(adapter);
1452 e1000_free_irq(adapter);
1453
1454 e1000_free_all_tx_resources(adapter);
1455 e1000_free_all_rx_resources(adapter);
1456
1457
1458
1459
1460 if ((hw->mng_cookie.status &
1461 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1462 !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) {
1463 e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
1464 adapter->mng_vlan_id);
1465 }
1466
1467 return 0;
1468}
1469
1470
1471
1472
1473
1474
1475
1476static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
1477 unsigned long len)
1478{
1479 struct e1000_hw *hw = &adapter->hw;
1480 unsigned long begin = (unsigned long)start;
1481 unsigned long end = begin + len;
1482
1483
1484
1485
1486 if (hw->mac_type == e1000_82545 ||
1487 hw->mac_type == e1000_ce4100 ||
1488 hw->mac_type == e1000_82546) {
1489 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
1490 }
1491
1492 return true;
1493}
1494
1495
1496
1497
1498
1499
1500
1501
1502static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
1503 struct e1000_tx_ring *txdr)
1504{
1505 struct pci_dev *pdev = adapter->pdev;
1506 int size;
1507
1508 size = sizeof(struct e1000_tx_buffer) * txdr->count;
1509 txdr->buffer_info = vzalloc(size);
1510 if (!txdr->buffer_info)
1511 return -ENOMEM;
1512
1513
1514
1515 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1516 txdr->size = ALIGN(txdr->size, 4096);
1517
1518 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma,
1519 GFP_KERNEL);
1520 if (!txdr->desc) {
1521setup_tx_desc_die:
1522 vfree(txdr->buffer_info);
1523 return -ENOMEM;
1524 }
1525
1526
1527 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1528 void *olddesc = txdr->desc;
1529 dma_addr_t olddma = txdr->dma;
1530 e_err(tx_err, "txdr align check failed: %u bytes at %p\n",
1531 txdr->size, txdr->desc);
1532
1533 txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size,
1534 &txdr->dma, GFP_KERNEL);
1535
1536 if (!txdr->desc) {
1537 dma_free_coherent(&pdev->dev, txdr->size, olddesc,
1538 olddma);
1539 goto setup_tx_desc_die;
1540 }
1541
1542 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1543
1544 dma_free_coherent(&pdev->dev, txdr->size, txdr->desc,
1545 txdr->dma);
1546 dma_free_coherent(&pdev->dev, txdr->size, olddesc,
1547 olddma);
1548 e_err(probe, "Unable to allocate aligned memory "
1549 "for the transmit descriptor ring\n");
1550 vfree(txdr->buffer_info);
1551 return -ENOMEM;
1552 } else {
1553
1554 dma_free_coherent(&pdev->dev, txdr->size, olddesc,
1555 olddma);
1556 }
1557 }
1558 memset(txdr->desc, 0, txdr->size);
1559
1560 txdr->next_to_use = 0;
1561 txdr->next_to_clean = 0;
1562
1563 return 0;
1564}
1565
1566
1567
1568
1569
1570
1571
1572
1573int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1574{
1575 int i, err = 0;
1576
1577 for (i = 0; i < adapter->num_tx_queues; i++) {
1578 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1579 if (err) {
1580 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
1581 for (i-- ; i >= 0; i--)
1582 e1000_free_tx_resources(adapter,
1583 &adapter->tx_ring[i]);
1584 break;
1585 }
1586 }
1587
1588 return err;
1589}
1590
1591
1592
1593
1594
1595
1596
1597static void e1000_configure_tx(struct e1000_adapter *adapter)
1598{
1599 u64 tdba;
1600 struct e1000_hw *hw = &adapter->hw;
1601 u32 tdlen, tctl, tipg;
1602 u32 ipgr1, ipgr2;
1603
1604
1605
1606 switch (adapter->num_tx_queues) {
1607 case 1:
1608 default:
1609 tdba = adapter->tx_ring[0].dma;
1610 tdlen = adapter->tx_ring[0].count *
1611 sizeof(struct e1000_tx_desc);
1612 ew32(TDLEN, tdlen);
1613 ew32(TDBAH, (tdba >> 32));
1614 ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
1615 ew32(TDT, 0);
1616 ew32(TDH, 0);
1617 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ?
1618 E1000_TDH : E1000_82542_TDH);
1619 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ?
1620 E1000_TDT : E1000_82542_TDT);
1621 break;
1622 }
1623
1624
1625 if ((hw->media_type == e1000_media_type_fiber ||
1626 hw->media_type == e1000_media_type_internal_serdes))
1627 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1628 else
1629 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1630
1631 switch (hw->mac_type) {
1632 case e1000_82542_rev2_0:
1633 case e1000_82542_rev2_1:
1634 tipg = DEFAULT_82542_TIPG_IPGT;
1635 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1636 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1637 break;
1638 default:
1639 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1640 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1641 break;
1642 }
1643 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1644 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1645 ew32(TIPG, tipg);
1646
1647
1648
1649 ew32(TIDV, adapter->tx_int_delay);
1650 if (hw->mac_type >= e1000_82540)
1651 ew32(TADV, adapter->tx_abs_int_delay);
1652
1653
1654
1655 tctl = er32(TCTL);
1656 tctl &= ~E1000_TCTL_CT;
1657 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1658 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1659
1660 e1000_config_collision_dist(hw);
1661
1662
1663 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1664
1665
1666 if (adapter->tx_int_delay)
1667 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1668
1669 if (hw->mac_type < e1000_82543)
1670 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1671 else
1672 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1673
1674
1675
1676
1677 if (hw->mac_type == e1000_82544 &&
1678 hw->bus_type == e1000_bus_type_pcix)
1679 adapter->pcix_82544 = true;
1680
1681 ew32(TCTL, tctl);
1682
1683}
1684
1685
1686
1687
1688
1689
1690
1691
1692static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
1693 struct e1000_rx_ring *rxdr)
1694{
1695 struct pci_dev *pdev = adapter->pdev;
1696 int size, desc_len;
1697
1698 size = sizeof(struct e1000_rx_buffer) * rxdr->count;
1699 rxdr->buffer_info = vzalloc(size);
1700 if (!rxdr->buffer_info)
1701 return -ENOMEM;
1702
1703 desc_len = sizeof(struct e1000_rx_desc);
1704
1705
1706
1707 rxdr->size = rxdr->count * desc_len;
1708 rxdr->size = ALIGN(rxdr->size, 4096);
1709
1710 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
1711 GFP_KERNEL);
1712 if (!rxdr->desc) {
1713setup_rx_desc_die:
1714 vfree(rxdr->buffer_info);
1715 return -ENOMEM;
1716 }
1717
1718
1719 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1720 void *olddesc = rxdr->desc;
1721 dma_addr_t olddma = rxdr->dma;
1722 e_err(rx_err, "rxdr align check failed: %u bytes at %p\n",
1723 rxdr->size, rxdr->desc);
1724
1725 rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size,
1726 &rxdr->dma, GFP_KERNEL);
1727
1728 if (!rxdr->desc) {
1729 dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
1730 olddma);
1731 goto setup_rx_desc_die;
1732 }
1733
1734 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1735
1736 dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc,
1737 rxdr->dma);
1738 dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
1739 olddma);
1740 e_err(probe, "Unable to allocate aligned memory for "
1741 "the Rx descriptor ring\n");
1742 goto setup_rx_desc_die;
1743 } else {
1744
1745 dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
1746 olddma);
1747 }
1748 }
1749 memset(rxdr->desc, 0, rxdr->size);
1750
1751 rxdr->next_to_clean = 0;
1752 rxdr->next_to_use = 0;
1753 rxdr->rx_skb_top = NULL;
1754
1755 return 0;
1756}
1757
1758
1759
1760
1761
1762
1763
1764
1765int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1766{
1767 int i, err = 0;
1768
1769 for (i = 0; i < adapter->num_rx_queues; i++) {
1770 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1771 if (err) {
1772 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
1773 for (i-- ; i >= 0; i--)
1774 e1000_free_rx_resources(adapter,
1775 &adapter->rx_ring[i]);
1776 break;
1777 }
1778 }
1779
1780 return err;
1781}
1782
1783
1784
1785
1786
1787static void e1000_setup_rctl(struct e1000_adapter *adapter)
1788{
1789 struct e1000_hw *hw = &adapter->hw;
1790 u32 rctl;
1791
1792 rctl = er32(RCTL);
1793
1794 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1795
1796 rctl |= E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
1797 E1000_RCTL_RDMTS_HALF |
1798 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
1799
1800 if (hw->tbi_compatibility_on == 1)
1801 rctl |= E1000_RCTL_SBP;
1802 else
1803 rctl &= ~E1000_RCTL_SBP;
1804
1805 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1806 rctl &= ~E1000_RCTL_LPE;
1807 else
1808 rctl |= E1000_RCTL_LPE;
1809
1810
1811 rctl &= ~E1000_RCTL_SZ_4096;
1812 rctl |= E1000_RCTL_BSEX;
1813 switch (adapter->rx_buffer_len) {
1814 case E1000_RXBUFFER_2048:
1815 default:
1816 rctl |= E1000_RCTL_SZ_2048;
1817 rctl &= ~E1000_RCTL_BSEX;
1818 break;
1819 case E1000_RXBUFFER_4096:
1820 rctl |= E1000_RCTL_SZ_4096;
1821 break;
1822 case E1000_RXBUFFER_8192:
1823 rctl |= E1000_RCTL_SZ_8192;
1824 break;
1825 case E1000_RXBUFFER_16384:
1826 rctl |= E1000_RCTL_SZ_16384;
1827 break;
1828 }
1829
1830
1831 if (adapter->netdev->features & NETIF_F_RXALL) {
1832
1833
1834
1835 rctl |= (E1000_RCTL_SBP |
1836 E1000_RCTL_BAM |
1837 E1000_RCTL_PMCF);
1838
1839 rctl &= ~(E1000_RCTL_VFE |
1840 E1000_RCTL_DPF |
1841 E1000_RCTL_CFIEN);
1842
1843
1844
1845 }
1846
1847 ew32(RCTL, rctl);
1848}
1849
1850
1851
1852
1853
1854
1855
1856static void e1000_configure_rx(struct e1000_adapter *adapter)
1857{
1858 u64 rdba;
1859 struct e1000_hw *hw = &adapter->hw;
1860 u32 rdlen, rctl, rxcsum;
1861
1862 if (adapter->netdev->mtu > ETH_DATA_LEN) {
1863 rdlen = adapter->rx_ring[0].count *
1864 sizeof(struct e1000_rx_desc);
1865 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
1866 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
1867 } else {
1868 rdlen = adapter->rx_ring[0].count *
1869 sizeof(struct e1000_rx_desc);
1870 adapter->clean_rx = e1000_clean_rx_irq;
1871 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1872 }
1873
1874
1875 rctl = er32(RCTL);
1876 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1877
1878
1879 ew32(RDTR, adapter->rx_int_delay);
1880
1881 if (hw->mac_type >= e1000_82540) {
1882 ew32(RADV, adapter->rx_abs_int_delay);
1883 if (adapter->itr_setting != 0)
1884 ew32(ITR, 1000000000 / (adapter->itr * 256));
1885 }
1886
1887
1888
1889
1890 switch (adapter->num_rx_queues) {
1891 case 1:
1892 default:
1893 rdba = adapter->rx_ring[0].dma;
1894 ew32(RDLEN, rdlen);
1895 ew32(RDBAH, (rdba >> 32));
1896 ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
1897 ew32(RDT, 0);
1898 ew32(RDH, 0);
1899 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ?
1900 E1000_RDH : E1000_82542_RDH);
1901 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ?
1902 E1000_RDT : E1000_82542_RDT);
1903 break;
1904 }
1905
1906
1907 if (hw->mac_type >= e1000_82543) {
1908 rxcsum = er32(RXCSUM);
1909 if (adapter->rx_csum)
1910 rxcsum |= E1000_RXCSUM_TUOFL;
1911 else
1912
1913 rxcsum &= ~E1000_RXCSUM_TUOFL;
1914 ew32(RXCSUM, rxcsum);
1915 }
1916
1917
1918 ew32(RCTL, rctl | E1000_RCTL_EN);
1919}
1920
1921
1922
1923
1924
1925
1926
1927
1928static void e1000_free_tx_resources(struct e1000_adapter *adapter,
1929 struct e1000_tx_ring *tx_ring)
1930{
1931 struct pci_dev *pdev = adapter->pdev;
1932
1933 e1000_clean_tx_ring(adapter, tx_ring);
1934
1935 vfree(tx_ring->buffer_info);
1936 tx_ring->buffer_info = NULL;
1937
1938 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1939 tx_ring->dma);
1940
1941 tx_ring->desc = NULL;
1942}
1943
1944
1945
1946
1947
1948
1949
1950void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
1951{
1952 int i;
1953
1954 for (i = 0; i < adapter->num_tx_queues; i++)
1955 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1956}
1957
1958static void
1959e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1960 struct e1000_tx_buffer *buffer_info)
1961{
1962 if (buffer_info->dma) {
1963 if (buffer_info->mapped_as_page)
1964 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1965 buffer_info->length, DMA_TO_DEVICE);
1966 else
1967 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1968 buffer_info->length,
1969 DMA_TO_DEVICE);
1970 buffer_info->dma = 0;
1971 }
1972 if (buffer_info->skb) {
1973 dev_kfree_skb_any(buffer_info->skb);
1974 buffer_info->skb = NULL;
1975 }
1976 buffer_info->time_stamp = 0;
1977
1978}
1979
1980
1981
1982
1983
1984
1985static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
1986 struct e1000_tx_ring *tx_ring)
1987{
1988 struct e1000_hw *hw = &adapter->hw;
1989 struct e1000_tx_buffer *buffer_info;
1990 unsigned long size;
1991 unsigned int i;
1992
1993
1994
1995 for (i = 0; i < tx_ring->count; i++) {
1996 buffer_info = &tx_ring->buffer_info[i];
1997 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
1998 }
1999
2000 netdev_reset_queue(adapter->netdev);
2001 size = sizeof(struct e1000_tx_buffer) * tx_ring->count;
2002 memset(tx_ring->buffer_info, 0, size);
2003
2004
2005
2006 memset(tx_ring->desc, 0, tx_ring->size);
2007
2008 tx_ring->next_to_use = 0;
2009 tx_ring->next_to_clean = 0;
2010 tx_ring->last_tx_tso = false;
2011
2012 writel(0, hw->hw_addr + tx_ring->tdh);
2013 writel(0, hw->hw_addr + tx_ring->tdt);
2014}
2015
2016
2017
2018
2019
2020static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
2021{
2022 int i;
2023
2024 for (i = 0; i < adapter->num_tx_queues; i++)
2025 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
2026}
2027
2028
2029
2030
2031
2032
2033
2034
2035static void e1000_free_rx_resources(struct e1000_adapter *adapter,
2036 struct e1000_rx_ring *rx_ring)
2037{
2038 struct pci_dev *pdev = adapter->pdev;
2039
2040 e1000_clean_rx_ring(adapter, rx_ring);
2041
2042 vfree(rx_ring->buffer_info);
2043 rx_ring->buffer_info = NULL;
2044
2045 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2046 rx_ring->dma);
2047
2048 rx_ring->desc = NULL;
2049}
2050
2051
2052
2053
2054
2055
2056
2057void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
2058{
2059 int i;
2060
2061 for (i = 0; i < adapter->num_rx_queues; i++)
2062 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
2063}
2064
2065#define E1000_HEADROOM (NET_SKB_PAD + NET_IP_ALIGN)
2066static unsigned int e1000_frag_len(const struct e1000_adapter *a)
2067{
2068 return SKB_DATA_ALIGN(a->rx_buffer_len + E1000_HEADROOM) +
2069 SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
2070}
2071
2072static void *e1000_alloc_frag(const struct e1000_adapter *a)
2073{
2074 unsigned int len = e1000_frag_len(a);
2075 u8 *data = netdev_alloc_frag(len);
2076
2077 if (likely(data))
2078 data += E1000_HEADROOM;
2079 return data;
2080}
2081
2082
2083
2084
2085
2086
2087static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
2088 struct e1000_rx_ring *rx_ring)
2089{
2090 struct e1000_hw *hw = &adapter->hw;
2091 struct e1000_rx_buffer *buffer_info;
2092 struct pci_dev *pdev = adapter->pdev;
2093 unsigned long size;
2094 unsigned int i;
2095
2096
2097 for (i = 0; i < rx_ring->count; i++) {
2098 buffer_info = &rx_ring->buffer_info[i];
2099 if (adapter->clean_rx == e1000_clean_rx_irq) {
2100 if (buffer_info->dma)
2101 dma_unmap_single(&pdev->dev, buffer_info->dma,
2102 adapter->rx_buffer_len,
2103 DMA_FROM_DEVICE);
2104 if (buffer_info->rxbuf.data) {
2105 skb_free_frag(buffer_info->rxbuf.data);
2106 buffer_info->rxbuf.data = NULL;
2107 }
2108 } else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
2109 if (buffer_info->dma)
2110 dma_unmap_page(&pdev->dev, buffer_info->dma,
2111 adapter->rx_buffer_len,
2112 DMA_FROM_DEVICE);
2113 if (buffer_info->rxbuf.page) {
2114 put_page(buffer_info->rxbuf.page);
2115 buffer_info->rxbuf.page = NULL;
2116 }
2117 }
2118
2119 buffer_info->dma = 0;
2120 }
2121
2122
2123 napi_free_frags(&adapter->napi);
2124 rx_ring->rx_skb_top = NULL;
2125
2126 size = sizeof(struct e1000_rx_buffer) * rx_ring->count;
2127 memset(rx_ring->buffer_info, 0, size);
2128
2129
2130 memset(rx_ring->desc, 0, rx_ring->size);
2131
2132 rx_ring->next_to_clean = 0;
2133 rx_ring->next_to_use = 0;
2134
2135 writel(0, hw->hw_addr + rx_ring->rdh);
2136 writel(0, hw->hw_addr + rx_ring->rdt);
2137}
2138
2139
2140
2141
2142
2143static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2144{
2145 int i;
2146
2147 for (i = 0; i < adapter->num_rx_queues; i++)
2148 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2149}
2150
2151
2152
2153
2154static void e1000_enter_82542_rst(struct e1000_adapter *adapter)
2155{
2156 struct e1000_hw *hw = &adapter->hw;
2157 struct net_device *netdev = adapter->netdev;
2158 u32 rctl;
2159
2160 e1000_pci_clear_mwi(hw);
2161
2162 rctl = er32(RCTL);
2163 rctl |= E1000_RCTL_RST;
2164 ew32(RCTL, rctl);
2165 E1000_WRITE_FLUSH();
2166 mdelay(5);
2167
2168 if (netif_running(netdev))
2169 e1000_clean_all_rx_rings(adapter);
2170}
2171
2172static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
2173{
2174 struct e1000_hw *hw = &adapter->hw;
2175 struct net_device *netdev = adapter->netdev;
2176 u32 rctl;
2177
2178 rctl = er32(RCTL);
2179 rctl &= ~E1000_RCTL_RST;
2180 ew32(RCTL, rctl);
2181 E1000_WRITE_FLUSH();
2182 mdelay(5);
2183
2184 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
2185 e1000_pci_set_mwi(hw);
2186
2187 if (netif_running(netdev)) {
2188
2189 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2190 e1000_configure_rx(adapter);
2191 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2192 }
2193}
2194
2195
2196
2197
2198
2199
2200
2201
2202static int e1000_set_mac(struct net_device *netdev, void *p)
2203{
2204 struct e1000_adapter *adapter = netdev_priv(netdev);
2205 struct e1000_hw *hw = &adapter->hw;
2206 struct sockaddr *addr = p;
2207
2208 if (!is_valid_ether_addr(addr->sa_data))
2209 return -EADDRNOTAVAIL;
2210
2211
2212
2213 if (hw->mac_type == e1000_82542_rev2_0)
2214 e1000_enter_82542_rst(adapter);
2215
2216 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2217 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
2218
2219 e1000_rar_set(hw, hw->mac_addr, 0);
2220
2221 if (hw->mac_type == e1000_82542_rev2_0)
2222 e1000_leave_82542_rst(adapter);
2223
2224 return 0;
2225}
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236static void e1000_set_rx_mode(struct net_device *netdev)
2237{
2238 struct e1000_adapter *adapter = netdev_priv(netdev);
2239 struct e1000_hw *hw = &adapter->hw;
2240 struct netdev_hw_addr *ha;
2241 bool use_uc = false;
2242 u32 rctl;
2243 u32 hash_value;
2244 int i, rar_entries = E1000_RAR_ENTRIES;
2245 int mta_reg_count = E1000_NUM_MTA_REGISTERS;
2246 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC);
2247
2248 if (!mcarray)
2249 return;
2250
2251
2252
2253 rctl = er32(RCTL);
2254
2255 if (netdev->flags & IFF_PROMISC) {
2256 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2257 rctl &= ~E1000_RCTL_VFE;
2258 } else {
2259 if (netdev->flags & IFF_ALLMULTI)
2260 rctl |= E1000_RCTL_MPE;
2261 else
2262 rctl &= ~E1000_RCTL_MPE;
2263
2264 if (e1000_vlan_used(adapter))
2265 rctl |= E1000_RCTL_VFE;
2266 }
2267
2268 if (netdev_uc_count(netdev) > rar_entries - 1) {
2269 rctl |= E1000_RCTL_UPE;
2270 } else if (!(netdev->flags & IFF_PROMISC)) {
2271 rctl &= ~E1000_RCTL_UPE;
2272 use_uc = true;
2273 }
2274
2275 ew32(RCTL, rctl);
2276
2277
2278
2279 if (hw->mac_type == e1000_82542_rev2_0)
2280 e1000_enter_82542_rst(adapter);
2281
2282
2283
2284
2285
2286
2287
2288
2289 i = 1;
2290 if (use_uc)
2291 netdev_for_each_uc_addr(ha, netdev) {
2292 if (i == rar_entries)
2293 break;
2294 e1000_rar_set(hw, ha->addr, i++);
2295 }
2296
2297 netdev_for_each_mc_addr(ha, netdev) {
2298 if (i == rar_entries) {
2299
2300 u32 hash_reg, hash_bit, mta;
2301 hash_value = e1000_hash_mc_addr(hw, ha->addr);
2302 hash_reg = (hash_value >> 5) & 0x7F;
2303 hash_bit = hash_value & 0x1F;
2304 mta = (1 << hash_bit);
2305 mcarray[hash_reg] |= mta;
2306 } else {
2307 e1000_rar_set(hw, ha->addr, i++);
2308 }
2309 }
2310
2311 for (; i < rar_entries; i++) {
2312 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2313 E1000_WRITE_FLUSH();
2314 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2315 E1000_WRITE_FLUSH();
2316 }
2317
2318
2319
2320
2321 for (i = mta_reg_count - 1; i >= 0 ; i--) {
2322
2323
2324
2325
2326
2327 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]);
2328 }
2329 E1000_WRITE_FLUSH();
2330
2331 if (hw->mac_type == e1000_82542_rev2_0)
2332 e1000_leave_82542_rst(adapter);
2333
2334 kfree(mcarray);
2335}
2336
2337
2338
2339
2340
2341
2342
2343
2344static void e1000_update_phy_info_task(struct work_struct *work)
2345{
2346 struct e1000_adapter *adapter = container_of(work,
2347 struct e1000_adapter,
2348 phy_info_task.work);
2349
2350 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
2351}
2352
2353
2354
2355
2356
2357static void e1000_82547_tx_fifo_stall_task(struct work_struct *work)
2358{
2359 struct e1000_adapter *adapter = container_of(work,
2360 struct e1000_adapter,
2361 fifo_stall_task.work);
2362 struct e1000_hw *hw = &adapter->hw;
2363 struct net_device *netdev = adapter->netdev;
2364 u32 tctl;
2365
2366 if (atomic_read(&adapter->tx_fifo_stall)) {
2367 if ((er32(TDT) == er32(TDH)) &&
2368 (er32(TDFT) == er32(TDFH)) &&
2369 (er32(TDFTS) == er32(TDFHS))) {
2370 tctl = er32(TCTL);
2371 ew32(TCTL, tctl & ~E1000_TCTL_EN);
2372 ew32(TDFT, adapter->tx_head_addr);
2373 ew32(TDFH, adapter->tx_head_addr);
2374 ew32(TDFTS, adapter->tx_head_addr);
2375 ew32(TDFHS, adapter->tx_head_addr);
2376 ew32(TCTL, tctl);
2377 E1000_WRITE_FLUSH();
2378
2379 adapter->tx_fifo_head = 0;
2380 atomic_set(&adapter->tx_fifo_stall, 0);
2381 netif_wake_queue(netdev);
2382 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) {
2383 schedule_delayed_work(&adapter->fifo_stall_task, 1);
2384 }
2385 }
2386}
2387
2388bool e1000_has_link(struct e1000_adapter *adapter)
2389{
2390 struct e1000_hw *hw = &adapter->hw;
2391 bool link_active = false;
2392
2393
2394
2395
2396
2397
2398
2399 switch (hw->media_type) {
2400 case e1000_media_type_copper:
2401 if (hw->mac_type == e1000_ce4100)
2402 hw->get_link_status = 1;
2403 if (hw->get_link_status) {
2404 e1000_check_for_link(hw);
2405 link_active = !hw->get_link_status;
2406 } else {
2407 link_active = true;
2408 }
2409 break;
2410 case e1000_media_type_fiber:
2411 e1000_check_for_link(hw);
2412 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
2413 break;
2414 case e1000_media_type_internal_serdes:
2415 e1000_check_for_link(hw);
2416 link_active = hw->serdes_has_link;
2417 break;
2418 default:
2419 break;
2420 }
2421
2422 return link_active;
2423}
2424
2425
2426
2427
2428
2429static void e1000_watchdog(struct work_struct *work)
2430{
2431 struct e1000_adapter *adapter = container_of(work,
2432 struct e1000_adapter,
2433 watchdog_task.work);
2434 struct e1000_hw *hw = &adapter->hw;
2435 struct net_device *netdev = adapter->netdev;
2436 struct e1000_tx_ring *txdr = adapter->tx_ring;
2437 u32 link, tctl;
2438
2439 link = e1000_has_link(adapter);
2440 if ((netif_carrier_ok(netdev)) && link)
2441 goto link_up;
2442
2443 if (link) {
2444 if (!netif_carrier_ok(netdev)) {
2445 u32 ctrl;
2446 bool txb2b = true;
2447
2448 e1000_get_speed_and_duplex(hw,
2449 &adapter->link_speed,
2450 &adapter->link_duplex);
2451
2452 ctrl = er32(CTRL);
2453 pr_info("%s NIC Link is Up %d Mbps %s, "
2454 "Flow Control: %s\n",
2455 netdev->name,
2456 adapter->link_speed,
2457 adapter->link_duplex == FULL_DUPLEX ?
2458 "Full Duplex" : "Half Duplex",
2459 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
2460 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
2461 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
2462 E1000_CTRL_TFCE) ? "TX" : "None")));
2463
2464
2465 adapter->tx_timeout_factor = 1;
2466 switch (adapter->link_speed) {
2467 case SPEED_10:
2468 txb2b = false;
2469 adapter->tx_timeout_factor = 16;
2470 break;
2471 case SPEED_100:
2472 txb2b = false;
2473
2474 break;
2475 }
2476
2477
2478 tctl = er32(TCTL);
2479 tctl |= E1000_TCTL_EN;
2480 ew32(TCTL, tctl);
2481
2482 netif_carrier_on(netdev);
2483 if (!test_bit(__E1000_DOWN, &adapter->flags))
2484 schedule_delayed_work(&adapter->phy_info_task,
2485 2 * HZ);
2486 adapter->smartspeed = 0;
2487 }
2488 } else {
2489 if (netif_carrier_ok(netdev)) {
2490 adapter->link_speed = 0;
2491 adapter->link_duplex = 0;
2492 pr_info("%s NIC Link is Down\n",
2493 netdev->name);
2494 netif_carrier_off(netdev);
2495
2496 if (!test_bit(__E1000_DOWN, &adapter->flags))
2497 schedule_delayed_work(&adapter->phy_info_task,
2498 2 * HZ);
2499 }
2500
2501 e1000_smartspeed(adapter);
2502 }
2503
2504link_up:
2505 e1000_update_stats(adapter);
2506
2507 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2508 adapter->tpt_old = adapter->stats.tpt;
2509 hw->collision_delta = adapter->stats.colc - adapter->colc_old;
2510 adapter->colc_old = adapter->stats.colc;
2511
2512 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2513 adapter->gorcl_old = adapter->stats.gorcl;
2514 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2515 adapter->gotcl_old = adapter->stats.gotcl;
2516
2517 e1000_update_adaptive(hw);
2518
2519 if (!netif_carrier_ok(netdev)) {
2520 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2521
2522
2523
2524
2525
2526 adapter->tx_timeout_count++;
2527 schedule_work(&adapter->reset_task);
2528
2529 return;
2530 }
2531 }
2532
2533
2534 if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) {
2535
2536
2537
2538
2539 u32 goc = (adapter->gotcl + adapter->gorcl) / 10000;
2540 u32 dif = (adapter->gotcl > adapter->gorcl ?
2541 adapter->gotcl - adapter->gorcl :
2542 adapter->gorcl - adapter->gotcl) / 10000;
2543 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
2544
2545 ew32(ITR, 1000000000 / (itr * 256));
2546 }
2547
2548
2549 ew32(ICS, E1000_ICS_RXDMT0);
2550
2551
2552 adapter->detect_tx_hung = true;
2553
2554
2555 if (!test_bit(__E1000_DOWN, &adapter->flags))
2556 schedule_delayed_work(&adapter->watchdog_task, 2 * HZ);
2557}
2558
2559enum latency_range {
2560 lowest_latency = 0,
2561 low_latency = 1,
2562 bulk_latency = 2,
2563 latency_invalid = 255
2564};
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2584 u16 itr_setting, int packets, int bytes)
2585{
2586 unsigned int retval = itr_setting;
2587 struct e1000_hw *hw = &adapter->hw;
2588
2589 if (unlikely(hw->mac_type < e1000_82540))
2590 goto update_itr_done;
2591
2592 if (packets == 0)
2593 goto update_itr_done;
2594
2595 switch (itr_setting) {
2596 case lowest_latency:
2597
2598 if (bytes/packets > 8000)
2599 retval = bulk_latency;
2600 else if ((packets < 5) && (bytes > 512))
2601 retval = low_latency;
2602 break;
2603 case low_latency:
2604 if (bytes > 10000) {
2605
2606 if (bytes/packets > 8000)
2607 retval = bulk_latency;
2608 else if ((packets < 10) || ((bytes/packets) > 1200))
2609 retval = bulk_latency;
2610 else if ((packets > 35))
2611 retval = lowest_latency;
2612 } else if (bytes/packets > 2000)
2613 retval = bulk_latency;
2614 else if (packets <= 2 && bytes < 512)
2615 retval = lowest_latency;
2616 break;
2617 case bulk_latency:
2618 if (bytes > 25000) {
2619 if (packets > 35)
2620 retval = low_latency;
2621 } else if (bytes < 6000) {
2622 retval = low_latency;
2623 }
2624 break;
2625 }
2626
2627update_itr_done:
2628 return retval;
2629}
2630
2631static void e1000_set_itr(struct e1000_adapter *adapter)
2632{
2633 struct e1000_hw *hw = &adapter->hw;
2634 u16 current_itr;
2635 u32 new_itr = adapter->itr;
2636
2637 if (unlikely(hw->mac_type < e1000_82540))
2638 return;
2639
2640
2641 if (unlikely(adapter->link_speed != SPEED_1000)) {
2642 current_itr = 0;
2643 new_itr = 4000;
2644 goto set_itr_now;
2645 }
2646
2647 adapter->tx_itr = e1000_update_itr(adapter, adapter->tx_itr,
2648 adapter->total_tx_packets,
2649 adapter->total_tx_bytes);
2650
2651 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2652 adapter->tx_itr = low_latency;
2653
2654 adapter->rx_itr = e1000_update_itr(adapter, adapter->rx_itr,
2655 adapter->total_rx_packets,
2656 adapter->total_rx_bytes);
2657
2658 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2659 adapter->rx_itr = low_latency;
2660
2661 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2662
2663 switch (current_itr) {
2664
2665 case lowest_latency:
2666 new_itr = 70000;
2667 break;
2668 case low_latency:
2669 new_itr = 20000;
2670 break;
2671 case bulk_latency:
2672 new_itr = 4000;
2673 break;
2674 default:
2675 break;
2676 }
2677
2678set_itr_now:
2679 if (new_itr != adapter->itr) {
2680
2681
2682
2683
2684 new_itr = new_itr > adapter->itr ?
2685 min(adapter->itr + (new_itr >> 2), new_itr) :
2686 new_itr;
2687 adapter->itr = new_itr;
2688 ew32(ITR, 1000000000 / (new_itr * 256));
2689 }
2690}
2691
2692#define E1000_TX_FLAGS_CSUM 0x00000001
2693#define E1000_TX_FLAGS_VLAN 0x00000002
2694#define E1000_TX_FLAGS_TSO 0x00000004
2695#define E1000_TX_FLAGS_IPV4 0x00000008
2696#define E1000_TX_FLAGS_NO_FCS 0x00000010
2697#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2698#define E1000_TX_FLAGS_VLAN_SHIFT 16
2699
2700static int e1000_tso(struct e1000_adapter *adapter,
2701 struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
2702 __be16 protocol)
2703{
2704 struct e1000_context_desc *context_desc;
2705 struct e1000_tx_buffer *buffer_info;
2706 unsigned int i;
2707 u32 cmd_length = 0;
2708 u16 ipcse = 0, tucse, mss;
2709 u8 ipcss, ipcso, tucss, tucso, hdr_len;
2710
2711 if (skb_is_gso(skb)) {
2712 int err;
2713
2714 err = skb_cow_head(skb, 0);
2715 if (err < 0)
2716 return err;
2717
2718 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2719 mss = skb_shinfo(skb)->gso_size;
2720 if (protocol == htons(ETH_P_IP)) {
2721 struct iphdr *iph = ip_hdr(skb);
2722 iph->tot_len = 0;
2723 iph->check = 0;
2724 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2725 iph->daddr, 0,
2726 IPPROTO_TCP,
2727 0);
2728 cmd_length = E1000_TXD_CMD_IP;
2729 ipcse = skb_transport_offset(skb) - 1;
2730 } else if (skb_is_gso_v6(skb)) {
2731 ipv6_hdr(skb)->payload_len = 0;
2732 tcp_hdr(skb)->check =
2733 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2734 &ipv6_hdr(skb)->daddr,
2735 0, IPPROTO_TCP, 0);
2736 ipcse = 0;
2737 }
2738 ipcss = skb_network_offset(skb);
2739 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
2740 tucss = skb_transport_offset(skb);
2741 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
2742 tucse = 0;
2743
2744 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2745 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2746
2747 i = tx_ring->next_to_use;
2748 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2749 buffer_info = &tx_ring->buffer_info[i];
2750
2751 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2752 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2753 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2754 context_desc->upper_setup.tcp_fields.tucss = tucss;
2755 context_desc->upper_setup.tcp_fields.tucso = tucso;
2756 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2757 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2758 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2759 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2760
2761 buffer_info->time_stamp = jiffies;
2762 buffer_info->next_to_watch = i;
2763
2764 if (++i == tx_ring->count)
2765 i = 0;
2766
2767 tx_ring->next_to_use = i;
2768
2769 return true;
2770 }
2771 return false;
2772}
2773
2774static bool e1000_tx_csum(struct e1000_adapter *adapter,
2775 struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
2776 __be16 protocol)
2777{
2778 struct e1000_context_desc *context_desc;
2779 struct e1000_tx_buffer *buffer_info;
2780 unsigned int i;
2781 u8 css;
2782 u32 cmd_len = E1000_TXD_CMD_DEXT;
2783
2784 if (skb->ip_summed != CHECKSUM_PARTIAL)
2785 return false;
2786
2787 switch (protocol) {
2788 case cpu_to_be16(ETH_P_IP):
2789 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2790 cmd_len |= E1000_TXD_CMD_TCP;
2791 break;
2792 case cpu_to_be16(ETH_P_IPV6):
2793
2794 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2795 cmd_len |= E1000_TXD_CMD_TCP;
2796 break;
2797 default:
2798 if (unlikely(net_ratelimit()))
2799 e_warn(drv, "checksum_partial proto=%x!\n",
2800 skb->protocol);
2801 break;
2802 }
2803
2804 css = skb_checksum_start_offset(skb);
2805
2806 i = tx_ring->next_to_use;
2807 buffer_info = &tx_ring->buffer_info[i];
2808 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2809
2810 context_desc->lower_setup.ip_config = 0;
2811 context_desc->upper_setup.tcp_fields.tucss = css;
2812 context_desc->upper_setup.tcp_fields.tucso =
2813 css + skb->csum_offset;
2814 context_desc->upper_setup.tcp_fields.tucse = 0;
2815 context_desc->tcp_seg_setup.data = 0;
2816 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
2817
2818 buffer_info->time_stamp = jiffies;
2819 buffer_info->next_to_watch = i;
2820
2821 if (unlikely(++i == tx_ring->count))
2822 i = 0;
2823
2824 tx_ring->next_to_use = i;
2825
2826 return true;
2827}
2828
2829#define E1000_MAX_TXD_PWR 12
2830#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2831
2832static int e1000_tx_map(struct e1000_adapter *adapter,
2833 struct e1000_tx_ring *tx_ring,
2834 struct sk_buff *skb, unsigned int first,
2835 unsigned int max_per_txd, unsigned int nr_frags,
2836 unsigned int mss)
2837{
2838 struct e1000_hw *hw = &adapter->hw;
2839 struct pci_dev *pdev = adapter->pdev;
2840 struct e1000_tx_buffer *buffer_info;
2841 unsigned int len = skb_headlen(skb);
2842 unsigned int offset = 0, size, count = 0, i;
2843 unsigned int f, bytecount, segs;
2844
2845 i = tx_ring->next_to_use;
2846
2847 while (len) {
2848 buffer_info = &tx_ring->buffer_info[i];
2849 size = min(len, max_per_txd);
2850
2851
2852
2853
2854
2855 if (!skb->data_len && tx_ring->last_tx_tso &&
2856 !skb_is_gso(skb)) {
2857 tx_ring->last_tx_tso = false;
2858 size -= 4;
2859 }
2860
2861
2862
2863
2864 if (unlikely(mss && !nr_frags && size == len && size > 8))
2865 size -= 4;
2866
2867
2868
2869
2870
2871 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
2872 (size > 2015) && count == 0))
2873 size = 2015;
2874
2875
2876
2877
2878 if (unlikely(adapter->pcix_82544 &&
2879 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2880 size > 4))
2881 size -= 4;
2882
2883 buffer_info->length = size;
2884
2885 buffer_info->time_stamp = jiffies;
2886 buffer_info->mapped_as_page = false;
2887 buffer_info->dma = dma_map_single(&pdev->dev,
2888 skb->data + offset,
2889 size, DMA_TO_DEVICE);
2890 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
2891 goto dma_error;
2892 buffer_info->next_to_watch = i;
2893
2894 len -= size;
2895 offset += size;
2896 count++;
2897 if (len) {
2898 i++;
2899 if (unlikely(i == tx_ring->count))
2900 i = 0;
2901 }
2902 }
2903
2904 for (f = 0; f < nr_frags; f++) {
2905 const struct skb_frag_struct *frag;
2906
2907 frag = &skb_shinfo(skb)->frags[f];
2908 len = skb_frag_size(frag);
2909 offset = 0;
2910
2911 while (len) {
2912 unsigned long bufend;
2913 i++;
2914 if (unlikely(i == tx_ring->count))
2915 i = 0;
2916
2917 buffer_info = &tx_ring->buffer_info[i];
2918 size = min(len, max_per_txd);
2919
2920
2921
2922 if (unlikely(mss && f == (nr_frags-1) &&
2923 size == len && size > 8))
2924 size -= 4;
2925
2926
2927
2928
2929 bufend = (unsigned long)
2930 page_to_phys(skb_frag_page(frag));
2931 bufend += offset + size - 1;
2932 if (unlikely(adapter->pcix_82544 &&
2933 !(bufend & 4) &&
2934 size > 4))
2935 size -= 4;
2936
2937 buffer_info->length = size;
2938 buffer_info->time_stamp = jiffies;
2939 buffer_info->mapped_as_page = true;
2940 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
2941 offset, size, DMA_TO_DEVICE);
2942 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
2943 goto dma_error;
2944 buffer_info->next_to_watch = i;
2945
2946 len -= size;
2947 offset += size;
2948 count++;
2949 }
2950 }
2951
2952 segs = skb_shinfo(skb)->gso_segs ?: 1;
2953
2954 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
2955
2956 tx_ring->buffer_info[i].skb = skb;
2957 tx_ring->buffer_info[i].segs = segs;
2958 tx_ring->buffer_info[i].bytecount = bytecount;
2959 tx_ring->buffer_info[first].next_to_watch = i;
2960
2961 return count;
2962
2963dma_error:
2964 dev_err(&pdev->dev, "TX DMA map failed\n");
2965 buffer_info->dma = 0;
2966 if (count)
2967 count--;
2968
2969 while (count--) {
2970 if (i == 0)
2971 i += tx_ring->count;
2972 i--;
2973 buffer_info = &tx_ring->buffer_info[i];
2974 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
2975 }
2976
2977 return 0;
2978}
2979
2980static void e1000_tx_queue(struct e1000_adapter *adapter,
2981 struct e1000_tx_ring *tx_ring, int tx_flags,
2982 int count)
2983{
2984 struct e1000_tx_desc *tx_desc = NULL;
2985 struct e1000_tx_buffer *buffer_info;
2986 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2987 unsigned int i;
2988
2989 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2990 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2991 E1000_TXD_CMD_TSE;
2992 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2993
2994 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2995 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2996 }
2997
2998 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2999 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3000 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3001 }
3002
3003 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
3004 txd_lower |= E1000_TXD_CMD_VLE;
3005 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3006 }
3007
3008 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
3009 txd_lower &= ~(E1000_TXD_CMD_IFCS);
3010
3011 i = tx_ring->next_to_use;
3012
3013 while (count--) {
3014 buffer_info = &tx_ring->buffer_info[i];
3015 tx_desc = E1000_TX_DESC(*tx_ring, i);
3016 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3017 tx_desc->lower.data =
3018 cpu_to_le32(txd_lower | buffer_info->length);
3019 tx_desc->upper.data = cpu_to_le32(txd_upper);
3020 if (unlikely(++i == tx_ring->count))
3021 i = 0;
3022 }
3023
3024 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3025
3026
3027 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
3028 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
3029
3030
3031
3032
3033
3034
3035 wmb();
3036
3037 tx_ring->next_to_use = i;
3038}
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048#define E1000_FIFO_HDR 0x10
3049#define E1000_82547_PAD_LEN 0x3E0
3050
3051static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
3052 struct sk_buff *skb)
3053{
3054 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
3055 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
3056
3057 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
3058
3059 if (adapter->link_duplex != HALF_DUPLEX)
3060 goto no_fifo_stall_required;
3061
3062 if (atomic_read(&adapter->tx_fifo_stall))
3063 return 1;
3064
3065 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
3066 atomic_set(&adapter->tx_fifo_stall, 1);
3067 return 1;
3068 }
3069
3070no_fifo_stall_required:
3071 adapter->tx_fifo_head += skb_fifo_len;
3072 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
3073 adapter->tx_fifo_head -= adapter->tx_fifo_size;
3074 return 0;
3075}
3076
3077static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3078{
3079 struct e1000_adapter *adapter = netdev_priv(netdev);
3080 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
3081
3082 netif_stop_queue(netdev);
3083
3084
3085
3086
3087 smp_mb();
3088
3089
3090
3091
3092 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
3093 return -EBUSY;
3094
3095
3096 netif_start_queue(netdev);
3097 ++adapter->restart_queue;
3098 return 0;
3099}
3100
3101static int e1000_maybe_stop_tx(struct net_device *netdev,
3102 struct e1000_tx_ring *tx_ring, int size)
3103{
3104 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
3105 return 0;
3106 return __e1000_maybe_stop_tx(netdev, size);
3107}
3108
3109#define TXD_USE_COUNT(S, X) (((S) + ((1 << (X)) - 1)) >> (X))
3110static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
3111 struct net_device *netdev)
3112{
3113 struct e1000_adapter *adapter = netdev_priv(netdev);
3114 struct e1000_hw *hw = &adapter->hw;
3115 struct e1000_tx_ring *tx_ring;
3116 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
3117 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3118 unsigned int tx_flags = 0;
3119 unsigned int len = skb_headlen(skb);
3120 unsigned int nr_frags;
3121 unsigned int mss;
3122 int count = 0;
3123 int tso;
3124 unsigned int f;
3125 __be16 protocol = vlan_get_protocol(skb);
3126
3127
3128
3129
3130
3131
3132 tx_ring = adapter->tx_ring;
3133
3134
3135
3136
3137
3138 if (eth_skb_pad(skb))
3139 return NETDEV_TX_OK;
3140
3141 mss = skb_shinfo(skb)->gso_size;
3142
3143
3144
3145
3146
3147
3148
3149 if (mss) {
3150 u8 hdr_len;
3151 max_per_txd = min(mss << 2, max_per_txd);
3152 max_txd_pwr = fls(max_per_txd) - 1;
3153
3154 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3155 if (skb->data_len && hdr_len == len) {
3156 switch (hw->mac_type) {
3157 unsigned int pull_size;
3158 case e1000_82544:
3159
3160
3161
3162
3163
3164
3165
3166 if ((unsigned long)(skb_tail_pointer(skb) - 1)
3167 & 4)
3168 break;
3169
3170 pull_size = min((unsigned int)4, skb->data_len);
3171 if (!__pskb_pull_tail(skb, pull_size)) {
3172 e_err(drv, "__pskb_pull_tail "
3173 "failed.\n");
3174 dev_kfree_skb_any(skb);
3175 return NETDEV_TX_OK;
3176 }
3177 len = skb_headlen(skb);
3178 break;
3179 default:
3180
3181 break;
3182 }
3183 }
3184 }
3185
3186
3187 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3188 count++;
3189 count++;
3190
3191
3192 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
3193 count++;
3194
3195 count += TXD_USE_COUNT(len, max_txd_pwr);
3196
3197 if (adapter->pcix_82544)
3198 count++;
3199
3200
3201
3202
3203 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
3204 (len > 2015)))
3205 count++;
3206
3207 nr_frags = skb_shinfo(skb)->nr_frags;
3208 for (f = 0; f < nr_frags; f++)
3209 count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]),
3210 max_txd_pwr);
3211 if (adapter->pcix_82544)
3212 count += nr_frags;
3213
3214
3215
3216
3217 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2)))
3218 return NETDEV_TX_BUSY;
3219
3220 if (unlikely((hw->mac_type == e1000_82547) &&
3221 (e1000_82547_fifo_workaround(adapter, skb)))) {
3222 netif_stop_queue(netdev);
3223 if (!test_bit(__E1000_DOWN, &adapter->flags))
3224 schedule_delayed_work(&adapter->fifo_stall_task, 1);
3225 return NETDEV_TX_BUSY;
3226 }
3227
3228 if (skb_vlan_tag_present(skb)) {
3229 tx_flags |= E1000_TX_FLAGS_VLAN;
3230 tx_flags |= (skb_vlan_tag_get(skb) <<
3231 E1000_TX_FLAGS_VLAN_SHIFT);
3232 }
3233
3234 first = tx_ring->next_to_use;
3235
3236 tso = e1000_tso(adapter, tx_ring, skb, protocol);
3237 if (tso < 0) {
3238 dev_kfree_skb_any(skb);
3239 return NETDEV_TX_OK;
3240 }
3241
3242 if (likely(tso)) {
3243 if (likely(hw->mac_type != e1000_82544))
3244 tx_ring->last_tx_tso = true;
3245 tx_flags |= E1000_TX_FLAGS_TSO;
3246 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb, protocol)))
3247 tx_flags |= E1000_TX_FLAGS_CSUM;
3248
3249 if (protocol == htons(ETH_P_IP))
3250 tx_flags |= E1000_TX_FLAGS_IPV4;
3251
3252 if (unlikely(skb->no_fcs))
3253 tx_flags |= E1000_TX_FLAGS_NO_FCS;
3254
3255 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd,
3256 nr_frags, mss);
3257
3258 if (count) {
3259
3260
3261
3262
3263
3264
3265
3266 int desc_needed = MAX_SKB_FRAGS + 7;
3267
3268 netdev_sent_queue(netdev, skb->len);
3269 skb_tx_timestamp(skb);
3270
3271 e1000_tx_queue(adapter, tx_ring, tx_flags, count);
3272
3273
3274
3275
3276
3277 if (adapter->pcix_82544)
3278 desc_needed += MAX_SKB_FRAGS + 1;
3279
3280
3281 e1000_maybe_stop_tx(netdev, tx_ring, desc_needed);
3282
3283 if (!skb->xmit_more ||
3284 netif_xmit_stopped(netdev_get_tx_queue(netdev, 0))) {
3285 writel(tx_ring->next_to_use, hw->hw_addr + tx_ring->tdt);
3286
3287
3288
3289
3290 mmiowb();
3291 }
3292 } else {
3293 dev_kfree_skb_any(skb);
3294 tx_ring->buffer_info[first].time_stamp = 0;
3295 tx_ring->next_to_use = first;
3296 }
3297
3298 return NETDEV_TX_OK;
3299}
3300
3301#define NUM_REGS 38
3302static void e1000_regdump(struct e1000_adapter *adapter)
3303{
3304 struct e1000_hw *hw = &adapter->hw;
3305 u32 regs[NUM_REGS];
3306 u32 *regs_buff = regs;
3307 int i = 0;
3308
3309 static const char * const reg_name[] = {
3310 "CTRL", "STATUS",
3311 "RCTL", "RDLEN", "RDH", "RDT", "RDTR",
3312 "TCTL", "TDBAL", "TDBAH", "TDLEN", "TDH", "TDT",
3313 "TIDV", "TXDCTL", "TADV", "TARC0",
3314 "TDBAL1", "TDBAH1", "TDLEN1", "TDH1", "TDT1",
3315 "TXDCTL1", "TARC1",
3316 "CTRL_EXT", "ERT", "RDBAL", "RDBAH",
3317 "TDFH", "TDFT", "TDFHS", "TDFTS", "TDFPC",
3318 "RDFH", "RDFT", "RDFHS", "RDFTS", "RDFPC"
3319 };
3320
3321 regs_buff[0] = er32(CTRL);
3322 regs_buff[1] = er32(STATUS);
3323
3324 regs_buff[2] = er32(RCTL);
3325 regs_buff[3] = er32(RDLEN);
3326 regs_buff[4] = er32(RDH);
3327 regs_buff[5] = er32(RDT);
3328 regs_buff[6] = er32(RDTR);
3329
3330 regs_buff[7] = er32(TCTL);
3331 regs_buff[8] = er32(TDBAL);
3332 regs_buff[9] = er32(TDBAH);
3333 regs_buff[10] = er32(TDLEN);
3334 regs_buff[11] = er32(TDH);
3335 regs_buff[12] = er32(TDT);
3336 regs_buff[13] = er32(TIDV);
3337 regs_buff[14] = er32(TXDCTL);
3338 regs_buff[15] = er32(TADV);
3339 regs_buff[16] = er32(TARC0);
3340
3341 regs_buff[17] = er32(TDBAL1);
3342 regs_buff[18] = er32(TDBAH1);
3343 regs_buff[19] = er32(TDLEN1);
3344 regs_buff[20] = er32(TDH1);
3345 regs_buff[21] = er32(TDT1);
3346 regs_buff[22] = er32(TXDCTL1);
3347 regs_buff[23] = er32(TARC1);
3348 regs_buff[24] = er32(CTRL_EXT);
3349 regs_buff[25] = er32(ERT);
3350 regs_buff[26] = er32(RDBAL0);
3351 regs_buff[27] = er32(RDBAH0);
3352 regs_buff[28] = er32(TDFH);
3353 regs_buff[29] = er32(TDFT);
3354 regs_buff[30] = er32(TDFHS);
3355 regs_buff[31] = er32(TDFTS);
3356 regs_buff[32] = er32(TDFPC);
3357 regs_buff[33] = er32(RDFH);
3358 regs_buff[34] = er32(RDFT);
3359 regs_buff[35] = er32(RDFHS);
3360 regs_buff[36] = er32(RDFTS);
3361 regs_buff[37] = er32(RDFPC);
3362
3363 pr_info("Register dump\n");
3364 for (i = 0; i < NUM_REGS; i++)
3365 pr_info("%-15s %08x\n", reg_name[i], regs_buff[i]);
3366}
3367
3368
3369
3370
3371static void e1000_dump(struct e1000_adapter *adapter)
3372{
3373
3374 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
3375 struct e1000_rx_ring *rx_ring = adapter->rx_ring;
3376 int i;
3377
3378 if (!netif_msg_hw(adapter))
3379 return;
3380
3381
3382 e1000_regdump(adapter);
3383
3384
3385 pr_info("TX Desc ring0 dump\n");
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestmp bi->skb\n");
3415 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestmp bi->skb\n");
3416
3417 if (!netif_msg_tx_done(adapter))
3418 goto rx_ring_summary;
3419
3420 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
3421 struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
3422 struct e1000_tx_buffer *buffer_info = &tx_ring->buffer_info[i];
3423 struct my_u { __le64 a; __le64 b; };
3424 struct my_u *u = (struct my_u *)tx_desc;
3425 const char *type;
3426
3427 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
3428 type = "NTC/U";
3429 else if (i == tx_ring->next_to_use)
3430 type = "NTU";
3431 else if (i == tx_ring->next_to_clean)
3432 type = "NTC";
3433 else
3434 type = "";
3435
3436 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p %s\n",
3437 ((le64_to_cpu(u->b) & (1<<20)) ? 'd' : 'c'), i,
3438 le64_to_cpu(u->a), le64_to_cpu(u->b),
3439 (u64)buffer_info->dma, buffer_info->length,
3440 buffer_info->next_to_watch,
3441 (u64)buffer_info->time_stamp, buffer_info->skb, type);
3442 }
3443
3444rx_ring_summary:
3445
3446 pr_info("\nRX Desc ring dump\n");
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457 pr_info("R[desc] [address 63:0 ] [vl er S cks ln] [bi->dma ] [bi->skb]\n");
3458
3459 if (!netif_msg_rx_status(adapter))
3460 goto exit;
3461
3462 for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
3463 struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i);
3464 struct e1000_rx_buffer *buffer_info = &rx_ring->buffer_info[i];
3465 struct my_u { __le64 a; __le64 b; };
3466 struct my_u *u = (struct my_u *)rx_desc;
3467 const char *type;
3468
3469 if (i == rx_ring->next_to_use)
3470 type = "NTU";
3471 else if (i == rx_ring->next_to_clean)
3472 type = "NTC";
3473 else
3474 type = "";
3475
3476 pr_info("R[0x%03X] %016llX %016llX %016llX %p %s\n",
3477 i, le64_to_cpu(u->a), le64_to_cpu(u->b),
3478 (u64)buffer_info->dma, buffer_info->rxbuf.data, type);
3479 }
3480
3481
3482
3483 pr_info("Rx descriptor cache in 64bit format\n");
3484 for (i = 0x6000; i <= 0x63FF ; i += 0x10) {
3485 pr_info("R%04X: %08X|%08X %08X|%08X\n",
3486 i,
3487 readl(adapter->hw.hw_addr + i+4),
3488 readl(adapter->hw.hw_addr + i),
3489 readl(adapter->hw.hw_addr + i+12),
3490 readl(adapter->hw.hw_addr + i+8));
3491 }
3492
3493 pr_info("Tx descriptor cache in 64bit format\n");
3494 for (i = 0x7000; i <= 0x73FF ; i += 0x10) {
3495 pr_info("T%04X: %08X|%08X %08X|%08X\n",
3496 i,
3497 readl(adapter->hw.hw_addr + i+4),
3498 readl(adapter->hw.hw_addr + i),
3499 readl(adapter->hw.hw_addr + i+12),
3500 readl(adapter->hw.hw_addr + i+8));
3501 }
3502exit:
3503 return;
3504}
3505
3506
3507
3508
3509
3510static void e1000_tx_timeout(struct net_device *netdev)
3511{
3512 struct e1000_adapter *adapter = netdev_priv(netdev);
3513
3514
3515 adapter->tx_timeout_count++;
3516 schedule_work(&adapter->reset_task);
3517}
3518
3519static void e1000_reset_task(struct work_struct *work)
3520{
3521 struct e1000_adapter *adapter =
3522 container_of(work, struct e1000_adapter, reset_task);
3523
3524 e_err(drv, "Reset adapter\n");
3525 e1000_reinit_locked(adapter);
3526}
3527
3528
3529
3530
3531
3532
3533
3534
3535static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3536{
3537
3538 return &netdev->stats;
3539}
3540
3541
3542
3543
3544
3545
3546
3547
3548static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3549{
3550 struct e1000_adapter *adapter = netdev_priv(netdev);
3551 struct e1000_hw *hw = &adapter->hw;
3552 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
3553
3554 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3555 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3556 e_err(probe, "Invalid MTU setting\n");
3557 return -EINVAL;
3558 }
3559
3560
3561 switch (hw->mac_type) {
3562 case e1000_undefined ... e1000_82542_rev2_1:
3563 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) {
3564 e_err(probe, "Jumbo Frames not supported.\n");
3565 return -EINVAL;
3566 }
3567 break;
3568 default:
3569
3570 break;
3571 }
3572
3573 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
3574 msleep(1);
3575
3576 hw->max_frame_size = max_frame;
3577 if (netif_running(netdev)) {
3578
3579 adapter->alloc_rx_buf = e1000_alloc_dummy_rx_buffers;
3580 e1000_down(adapter);
3581 }
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591 if (max_frame <= E1000_RXBUFFER_2048)
3592 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3593 else
3594#if (PAGE_SIZE >= E1000_RXBUFFER_16384)
3595 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3596#elif (PAGE_SIZE >= E1000_RXBUFFER_4096)
3597 adapter->rx_buffer_len = PAGE_SIZE;
3598#endif
3599
3600
3601 if (!hw->tbi_compatibility_on &&
3602 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) ||
3603 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3604 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3605
3606 pr_info("%s changing MTU from %d to %d\n",
3607 netdev->name, netdev->mtu, new_mtu);
3608 netdev->mtu = new_mtu;
3609
3610 if (netif_running(netdev))
3611 e1000_up(adapter);
3612 else
3613 e1000_reset(adapter);
3614
3615 clear_bit(__E1000_RESETTING, &adapter->flags);
3616
3617 return 0;
3618}
3619
3620
3621
3622
3623
3624void e1000_update_stats(struct e1000_adapter *adapter)
3625{
3626 struct net_device *netdev = adapter->netdev;
3627 struct e1000_hw *hw = &adapter->hw;
3628 struct pci_dev *pdev = adapter->pdev;
3629 unsigned long flags;
3630 u16 phy_tmp;
3631
3632#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3633
3634
3635
3636
3637 if (adapter->link_speed == 0)
3638 return;
3639 if (pci_channel_offline(pdev))
3640 return;
3641
3642 spin_lock_irqsave(&adapter->stats_lock, flags);
3643
3644
3645
3646
3647
3648
3649 adapter->stats.crcerrs += er32(CRCERRS);
3650 adapter->stats.gprc += er32(GPRC);
3651 adapter->stats.gorcl += er32(GORCL);
3652 adapter->stats.gorch += er32(GORCH);
3653 adapter->stats.bprc += er32(BPRC);
3654 adapter->stats.mprc += er32(MPRC);
3655 adapter->stats.roc += er32(ROC);
3656
3657 adapter->stats.prc64 += er32(PRC64);
3658 adapter->stats.prc127 += er32(PRC127);
3659 adapter->stats.prc255 += er32(PRC255);
3660 adapter->stats.prc511 += er32(PRC511);
3661 adapter->stats.prc1023 += er32(PRC1023);
3662 adapter->stats.prc1522 += er32(PRC1522);
3663
3664 adapter->stats.symerrs += er32(SYMERRS);
3665 adapter->stats.mpc += er32(MPC);
3666 adapter->stats.scc += er32(SCC);
3667 adapter->stats.ecol += er32(ECOL);
3668 adapter->stats.mcc += er32(MCC);
3669 adapter->stats.latecol += er32(LATECOL);
3670 adapter->stats.dc += er32(DC);
3671 adapter->stats.sec += er32(SEC);
3672 adapter->stats.rlec += er32(RLEC);
3673 adapter->stats.xonrxc += er32(XONRXC);
3674 adapter->stats.xontxc += er32(XONTXC);
3675 adapter->stats.xoffrxc += er32(XOFFRXC);
3676 adapter->stats.xofftxc += er32(XOFFTXC);
3677 adapter->stats.fcruc += er32(FCRUC);
3678 adapter->stats.gptc += er32(GPTC);
3679 adapter->stats.gotcl += er32(GOTCL);
3680 adapter->stats.gotch += er32(GOTCH);
3681 adapter->stats.rnbc += er32(RNBC);
3682 adapter->stats.ruc += er32(RUC);
3683 adapter->stats.rfc += er32(RFC);
3684 adapter->stats.rjc += er32(RJC);
3685 adapter->stats.torl += er32(TORL);
3686 adapter->stats.torh += er32(TORH);
3687 adapter->stats.totl += er32(TOTL);
3688 adapter->stats.toth += er32(TOTH);
3689 adapter->stats.tpr += er32(TPR);
3690
3691 adapter->stats.ptc64 += er32(PTC64);
3692 adapter->stats.ptc127 += er32(PTC127);
3693 adapter->stats.ptc255 += er32(PTC255);
3694 adapter->stats.ptc511 += er32(PTC511);
3695 adapter->stats.ptc1023 += er32(PTC1023);
3696 adapter->stats.ptc1522 += er32(PTC1522);
3697
3698 adapter->stats.mptc += er32(MPTC);
3699 adapter->stats.bptc += er32(BPTC);
3700
3701
3702
3703 hw->tx_packet_delta = er32(TPT);
3704 adapter->stats.tpt += hw->tx_packet_delta;
3705 hw->collision_delta = er32(COLC);
3706 adapter->stats.colc += hw->collision_delta;
3707
3708 if (hw->mac_type >= e1000_82543) {
3709 adapter->stats.algnerrc += er32(ALGNERRC);
3710 adapter->stats.rxerrc += er32(RXERRC);
3711 adapter->stats.tncrs += er32(TNCRS);
3712 adapter->stats.cexterr += er32(CEXTERR);
3713 adapter->stats.tsctc += er32(TSCTC);
3714 adapter->stats.tsctfc += er32(TSCTFC);
3715 }
3716
3717
3718 netdev->stats.multicast = adapter->stats.mprc;
3719 netdev->stats.collisions = adapter->stats.colc;
3720
3721
3722
3723
3724
3725
3726 netdev->stats.rx_errors = adapter->stats.rxerrc +
3727 adapter->stats.crcerrs + adapter->stats.algnerrc +
3728 adapter->stats.ruc + adapter->stats.roc +
3729 adapter->stats.cexterr;
3730 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3731 netdev->stats.rx_length_errors = adapter->stats.rlerrc;
3732 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
3733 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
3734 netdev->stats.rx_missed_errors = adapter->stats.mpc;
3735
3736
3737 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3738 netdev->stats.tx_errors = adapter->stats.txerrc;
3739 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
3740 netdev->stats.tx_window_errors = adapter->stats.latecol;
3741 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
3742 if (hw->bad_tx_carr_stats_fd &&
3743 adapter->link_duplex == FULL_DUPLEX) {
3744 netdev->stats.tx_carrier_errors = 0;
3745 adapter->stats.tncrs = 0;
3746 }
3747
3748
3749
3750
3751 if (hw->media_type == e1000_media_type_copper) {
3752 if ((adapter->link_speed == SPEED_1000) &&
3753 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3754 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3755 adapter->phy_stats.idle_errors += phy_tmp;
3756 }
3757
3758 if ((hw->mac_type <= e1000_82546) &&
3759 (hw->phy_type == e1000_phy_m88) &&
3760 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3761 adapter->phy_stats.receive_errors += phy_tmp;
3762 }
3763
3764
3765 if (hw->has_smbus) {
3766 adapter->stats.mgptc += er32(MGTPTC);
3767 adapter->stats.mgprc += er32(MGTPRC);
3768 adapter->stats.mgpdc += er32(MGTPDC);
3769 }
3770
3771 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3772}
3773
3774
3775
3776
3777
3778
3779static irqreturn_t e1000_intr(int irq, void *data)
3780{
3781 struct net_device *netdev = data;
3782 struct e1000_adapter *adapter = netdev_priv(netdev);
3783 struct e1000_hw *hw = &adapter->hw;
3784 u32 icr = er32(ICR);
3785
3786 if (unlikely((!icr)))
3787 return IRQ_NONE;
3788
3789
3790
3791
3792
3793 if (unlikely(test_bit(__E1000_DOWN, &adapter->flags)))
3794 return IRQ_HANDLED;
3795
3796 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3797 hw->get_link_status = 1;
3798
3799 if (!test_bit(__E1000_DOWN, &adapter->flags))
3800 schedule_delayed_work(&adapter->watchdog_task, 1);
3801 }
3802
3803
3804 ew32(IMC, ~0);
3805 E1000_WRITE_FLUSH();
3806
3807 if (likely(napi_schedule_prep(&adapter->napi))) {
3808 adapter->total_tx_bytes = 0;
3809 adapter->total_tx_packets = 0;
3810 adapter->total_rx_bytes = 0;
3811 adapter->total_rx_packets = 0;
3812 __napi_schedule(&adapter->napi);
3813 } else {
3814
3815
3816
3817 if (!test_bit(__E1000_DOWN, &adapter->flags))
3818 e1000_irq_enable(adapter);
3819 }
3820
3821 return IRQ_HANDLED;
3822}
3823
3824
3825
3826
3827
3828static int e1000_clean(struct napi_struct *napi, int budget)
3829{
3830 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
3831 napi);
3832 int tx_clean_complete = 0, work_done = 0;
3833
3834 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]);
3835
3836 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget);
3837
3838 if (!tx_clean_complete)
3839 work_done = budget;
3840
3841
3842 if (work_done < budget) {
3843 if (likely(adapter->itr_setting & 3))
3844 e1000_set_itr(adapter);
3845 napi_complete_done(napi, work_done);
3846 if (!test_bit(__E1000_DOWN, &adapter->flags))
3847 e1000_irq_enable(adapter);
3848 }
3849
3850 return work_done;
3851}
3852
3853
3854
3855
3856
3857static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
3858 struct e1000_tx_ring *tx_ring)
3859{
3860 struct e1000_hw *hw = &adapter->hw;
3861 struct net_device *netdev = adapter->netdev;
3862 struct e1000_tx_desc *tx_desc, *eop_desc;
3863 struct e1000_tx_buffer *buffer_info;
3864 unsigned int i, eop;
3865 unsigned int count = 0;
3866 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
3867 unsigned int bytes_compl = 0, pkts_compl = 0;
3868
3869 i = tx_ring->next_to_clean;
3870 eop = tx_ring->buffer_info[i].next_to_watch;
3871 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3872
3873 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
3874 (count < tx_ring->count)) {
3875 bool cleaned = false;
3876 dma_rmb();
3877 for ( ; !cleaned; count++) {
3878 tx_desc = E1000_TX_DESC(*tx_ring, i);
3879 buffer_info = &tx_ring->buffer_info[i];
3880 cleaned = (i == eop);
3881
3882 if (cleaned) {
3883 total_tx_packets += buffer_info->segs;
3884 total_tx_bytes += buffer_info->bytecount;
3885 if (buffer_info->skb) {
3886 bytes_compl += buffer_info->skb->len;
3887 pkts_compl++;
3888 }
3889
3890 }
3891 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3892 tx_desc->upper.data = 0;
3893
3894 if (unlikely(++i == tx_ring->count))
3895 i = 0;
3896 }
3897
3898 eop = tx_ring->buffer_info[i].next_to_watch;
3899 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3900 }
3901
3902
3903
3904
3905 smp_store_release(&tx_ring->next_to_clean, i);
3906
3907 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
3908
3909#define TX_WAKE_THRESHOLD 32
3910 if (unlikely(count && netif_carrier_ok(netdev) &&
3911 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3912
3913
3914
3915 smp_mb();
3916
3917 if (netif_queue_stopped(netdev) &&
3918 !(test_bit(__E1000_DOWN, &adapter->flags))) {
3919 netif_wake_queue(netdev);
3920 ++adapter->restart_queue;
3921 }
3922 }
3923
3924 if (adapter->detect_tx_hung) {
3925
3926
3927
3928 adapter->detect_tx_hung = false;
3929 if (tx_ring->buffer_info[eop].time_stamp &&
3930 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3931 (adapter->tx_timeout_factor * HZ)) &&
3932 !(er32(STATUS) & E1000_STATUS_TXOFF)) {
3933
3934
3935 e_err(drv, "Detected Tx Unit Hang\n"
3936 " Tx Queue <%lu>\n"
3937 " TDH <%x>\n"
3938 " TDT <%x>\n"
3939 " next_to_use <%x>\n"
3940 " next_to_clean <%x>\n"
3941 "buffer_info[next_to_clean]\n"
3942 " time_stamp <%lx>\n"
3943 " next_to_watch <%x>\n"
3944 " jiffies <%lx>\n"
3945 " next_to_watch.status <%x>\n",
3946 (unsigned long)(tx_ring - adapter->tx_ring),
3947 readl(hw->hw_addr + tx_ring->tdh),
3948 readl(hw->hw_addr + tx_ring->tdt),
3949 tx_ring->next_to_use,
3950 tx_ring->next_to_clean,
3951 tx_ring->buffer_info[eop].time_stamp,
3952 eop,
3953 jiffies,
3954 eop_desc->upper.fields.status);
3955 e1000_dump(adapter);
3956 netif_stop_queue(netdev);
3957 }
3958 }
3959 adapter->total_tx_bytes += total_tx_bytes;
3960 adapter->total_tx_packets += total_tx_packets;
3961 netdev->stats.tx_bytes += total_tx_bytes;
3962 netdev->stats.tx_packets += total_tx_packets;
3963 return count < tx_ring->count;
3964}
3965
3966
3967
3968
3969
3970
3971
3972
3973static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
3974 u32 csum, struct sk_buff *skb)
3975{
3976 struct e1000_hw *hw = &adapter->hw;
3977 u16 status = (u16)status_err;
3978 u8 errors = (u8)(status_err >> 24);
3979
3980 skb_checksum_none_assert(skb);
3981
3982
3983 if (unlikely(hw->mac_type < e1000_82543))
3984 return;
3985
3986 if (unlikely(status & E1000_RXD_STAT_IXSM))
3987 return;
3988
3989 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3990
3991 adapter->hw_csum_err++;
3992 return;
3993 }
3994
3995 if (!(status & E1000_RXD_STAT_TCPCS))
3996 return;
3997
3998
3999 if (likely(status & E1000_RXD_STAT_TCPCS)) {
4000
4001 skb->ip_summed = CHECKSUM_UNNECESSARY;
4002 }
4003 adapter->hw_csum_good++;
4004}
4005
4006
4007
4008
4009static void e1000_consume_page(struct e1000_rx_buffer *bi, struct sk_buff *skb,
4010 u16 length)
4011{
4012 bi->rxbuf.page = NULL;
4013 skb->len += length;
4014 skb->data_len += length;
4015 skb->truesize += PAGE_SIZE;
4016}
4017
4018
4019
4020
4021
4022
4023
4024
4025static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status,
4026 __le16 vlan, struct sk_buff *skb)
4027{
4028 skb->protocol = eth_type_trans(skb, adapter->netdev);
4029
4030 if (status & E1000_RXD_STAT_VP) {
4031 u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
4032
4033 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
4034 }
4035 napi_gro_receive(&adapter->napi, skb);
4036}
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046static void e1000_tbi_adjust_stats(struct e1000_hw *hw,
4047 struct e1000_hw_stats *stats,
4048 u32 frame_len, const u8 *mac_addr)
4049{
4050 u64 carry_bit;
4051
4052
4053 frame_len--;
4054
4055
4056
4057
4058
4059 stats->crcerrs--;
4060
4061 stats->gprc++;
4062
4063
4064 carry_bit = 0x80000000 & stats->gorcl;
4065 stats->gorcl += frame_len;
4066
4067
4068
4069
4070
4071
4072
4073 if (carry_bit && ((stats->gorcl & 0x80000000) == 0))
4074 stats->gorch++;
4075
4076
4077
4078
4079 if (is_broadcast_ether_addr(mac_addr))
4080 stats->bprc++;
4081 else if (is_multicast_ether_addr(mac_addr))
4082 stats->mprc++;
4083
4084 if (frame_len == hw->max_frame_size) {
4085
4086
4087
4088 if (stats->roc > 0)
4089 stats->roc--;
4090 }
4091
4092
4093
4094
4095 if (frame_len == 64) {
4096 stats->prc64++;
4097 stats->prc127--;
4098 } else if (frame_len == 127) {
4099 stats->prc127++;
4100 stats->prc255--;
4101 } else if (frame_len == 255) {
4102 stats->prc255++;
4103 stats->prc511--;
4104 } else if (frame_len == 511) {
4105 stats->prc511++;
4106 stats->prc1023--;
4107 } else if (frame_len == 1023) {
4108 stats->prc1023++;
4109 stats->prc1522--;
4110 } else if (frame_len == 1522) {
4111 stats->prc1522++;
4112 }
4113}
4114
4115static bool e1000_tbi_should_accept(struct e1000_adapter *adapter,
4116 u8 status, u8 errors,
4117 u32 length, const u8 *data)
4118{
4119 struct e1000_hw *hw = &adapter->hw;
4120 u8 last_byte = *(data + length - 1);
4121
4122 if (TBI_ACCEPT(hw, status, errors, length, last_byte)) {
4123 unsigned long irq_flags;
4124
4125 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
4126 e1000_tbi_adjust_stats(hw, &adapter->stats, length, data);
4127 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
4128
4129 return true;
4130 }
4131
4132 return false;
4133}
4134
4135static struct sk_buff *e1000_alloc_rx_skb(struct e1000_adapter *adapter,
4136 unsigned int bufsz)
4137{
4138 struct sk_buff *skb = napi_alloc_skb(&adapter->napi, bufsz);
4139
4140 if (unlikely(!skb))
4141 adapter->alloc_rx_buff_failed++;
4142 return skb;
4143}
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
4156 struct e1000_rx_ring *rx_ring,
4157 int *work_done, int work_to_do)
4158{
4159 struct net_device *netdev = adapter->netdev;
4160 struct pci_dev *pdev = adapter->pdev;
4161 struct e1000_rx_desc *rx_desc, *next_rxd;
4162 struct e1000_rx_buffer *buffer_info, *next_buffer;
4163 u32 length;
4164 unsigned int i;
4165 int cleaned_count = 0;
4166 bool cleaned = false;
4167 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
4168
4169 i = rx_ring->next_to_clean;
4170 rx_desc = E1000_RX_DESC(*rx_ring, i);
4171 buffer_info = &rx_ring->buffer_info[i];
4172
4173 while (rx_desc->status & E1000_RXD_STAT_DD) {
4174 struct sk_buff *skb;
4175 u8 status;
4176
4177 if (*work_done >= work_to_do)
4178 break;
4179 (*work_done)++;
4180 dma_rmb();
4181
4182 status = rx_desc->status;
4183
4184 if (++i == rx_ring->count)
4185 i = 0;
4186
4187 next_rxd = E1000_RX_DESC(*rx_ring, i);
4188 prefetch(next_rxd);
4189
4190 next_buffer = &rx_ring->buffer_info[i];
4191
4192 cleaned = true;
4193 cleaned_count++;
4194 dma_unmap_page(&pdev->dev, buffer_info->dma,
4195 adapter->rx_buffer_len, DMA_FROM_DEVICE);
4196 buffer_info->dma = 0;
4197
4198 length = le16_to_cpu(rx_desc->length);
4199
4200
4201 if (unlikely((status & E1000_RXD_STAT_EOP) &&
4202 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
4203 u8 *mapped = page_address(buffer_info->rxbuf.page);
4204
4205 if (e1000_tbi_should_accept(adapter, status,
4206 rx_desc->errors,
4207 length, mapped)) {
4208 length--;
4209 } else if (netdev->features & NETIF_F_RXALL) {
4210 goto process_skb;
4211 } else {
4212
4213
4214
4215 if (rx_ring->rx_skb_top)
4216 dev_kfree_skb(rx_ring->rx_skb_top);
4217 rx_ring->rx_skb_top = NULL;
4218 goto next_desc;
4219 }
4220 }
4221
4222#define rxtop rx_ring->rx_skb_top
4223process_skb:
4224 if (!(status & E1000_RXD_STAT_EOP)) {
4225
4226 if (!rxtop) {
4227
4228 rxtop = napi_get_frags(&adapter->napi);
4229 if (!rxtop)
4230 break;
4231
4232 skb_fill_page_desc(rxtop, 0,
4233 buffer_info->rxbuf.page,
4234 0, length);
4235 } else {
4236
4237 skb_fill_page_desc(rxtop,
4238 skb_shinfo(rxtop)->nr_frags,
4239 buffer_info->rxbuf.page, 0, length);
4240 }
4241 e1000_consume_page(buffer_info, rxtop, length);
4242 goto next_desc;
4243 } else {
4244 if (rxtop) {
4245
4246 skb_fill_page_desc(rxtop,
4247 skb_shinfo(rxtop)->nr_frags,
4248 buffer_info->rxbuf.page, 0, length);
4249 skb = rxtop;
4250 rxtop = NULL;
4251 e1000_consume_page(buffer_info, skb, length);
4252 } else {
4253 struct page *p;
4254
4255
4256
4257 p = buffer_info->rxbuf.page;
4258 if (length <= copybreak) {
4259 u8 *vaddr;
4260
4261 if (likely(!(netdev->features & NETIF_F_RXFCS)))
4262 length -= 4;
4263 skb = e1000_alloc_rx_skb(adapter,
4264 length);
4265 if (!skb)
4266 break;
4267
4268 vaddr = kmap_atomic(p);
4269 memcpy(skb_tail_pointer(skb), vaddr,
4270 length);
4271 kunmap_atomic(vaddr);
4272
4273
4274
4275 skb_put(skb, length);
4276 e1000_rx_checksum(adapter,
4277 status | rx_desc->errors << 24,
4278 le16_to_cpu(rx_desc->csum), skb);
4279
4280 total_rx_bytes += skb->len;
4281 total_rx_packets++;
4282
4283 e1000_receive_skb(adapter, status,
4284 rx_desc->special, skb);
4285 goto next_desc;
4286 } else {
4287 skb = napi_get_frags(&adapter->napi);
4288 if (!skb) {
4289 adapter->alloc_rx_buff_failed++;
4290 break;
4291 }
4292 skb_fill_page_desc(skb, 0, p, 0,
4293 length);
4294 e1000_consume_page(buffer_info, skb,
4295 length);
4296 }
4297 }
4298 }
4299
4300
4301 e1000_rx_checksum(adapter,
4302 (u32)(status) |
4303 ((u32)(rx_desc->errors) << 24),
4304 le16_to_cpu(rx_desc->csum), skb);
4305
4306 total_rx_bytes += (skb->len - 4);
4307 if (likely(!(netdev->features & NETIF_F_RXFCS)))
4308 pskb_trim(skb, skb->len - 4);
4309 total_rx_packets++;
4310
4311 if (status & E1000_RXD_STAT_VP) {
4312 __le16 vlan = rx_desc->special;
4313 u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
4314
4315 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
4316 }
4317
4318 napi_gro_frags(&adapter->napi);
4319
4320next_desc:
4321 rx_desc->status = 0;
4322
4323
4324 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4325 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4326 cleaned_count = 0;
4327 }
4328
4329
4330 rx_desc = next_rxd;
4331 buffer_info = next_buffer;
4332 }
4333 rx_ring->next_to_clean = i;
4334
4335 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4336 if (cleaned_count)
4337 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4338
4339 adapter->total_rx_packets += total_rx_packets;
4340 adapter->total_rx_bytes += total_rx_bytes;
4341 netdev->stats.rx_bytes += total_rx_bytes;
4342 netdev->stats.rx_packets += total_rx_packets;
4343 return cleaned;
4344}
4345
4346
4347
4348
4349static struct sk_buff *e1000_copybreak(struct e1000_adapter *adapter,
4350 struct e1000_rx_buffer *buffer_info,
4351 u32 length, const void *data)
4352{
4353 struct sk_buff *skb;
4354
4355 if (length > copybreak)
4356 return NULL;
4357
4358 skb = e1000_alloc_rx_skb(adapter, length);
4359 if (!skb)
4360 return NULL;
4361
4362 dma_sync_single_for_cpu(&adapter->pdev->dev, buffer_info->dma,
4363 length, DMA_FROM_DEVICE);
4364
4365 memcpy(skb_put(skb, length), data, length);
4366
4367 return skb;
4368}
4369
4370
4371
4372
4373
4374
4375
4376
4377static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
4378 struct e1000_rx_ring *rx_ring,
4379 int *work_done, int work_to_do)
4380{
4381 struct net_device *netdev = adapter->netdev;
4382 struct pci_dev *pdev = adapter->pdev;
4383 struct e1000_rx_desc *rx_desc, *next_rxd;
4384 struct e1000_rx_buffer *buffer_info, *next_buffer;
4385 u32 length;
4386 unsigned int i;
4387 int cleaned_count = 0;
4388 bool cleaned = false;
4389 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
4390
4391 i = rx_ring->next_to_clean;
4392 rx_desc = E1000_RX_DESC(*rx_ring, i);
4393 buffer_info = &rx_ring->buffer_info[i];
4394
4395 while (rx_desc->status & E1000_RXD_STAT_DD) {
4396 struct sk_buff *skb;
4397 u8 *data;
4398 u8 status;
4399
4400 if (*work_done >= work_to_do)
4401 break;
4402 (*work_done)++;
4403 dma_rmb();
4404
4405 status = rx_desc->status;
4406 length = le16_to_cpu(rx_desc->length);
4407
4408 data = buffer_info->rxbuf.data;
4409 prefetch(data);
4410 skb = e1000_copybreak(adapter, buffer_info, length, data);
4411 if (!skb) {
4412 unsigned int frag_len = e1000_frag_len(adapter);
4413
4414 skb = build_skb(data - E1000_HEADROOM, frag_len);
4415 if (!skb) {
4416 adapter->alloc_rx_buff_failed++;
4417 break;
4418 }
4419
4420 skb_reserve(skb, E1000_HEADROOM);
4421 dma_unmap_single(&pdev->dev, buffer_info->dma,
4422 adapter->rx_buffer_len,
4423 DMA_FROM_DEVICE);
4424 buffer_info->dma = 0;
4425 buffer_info->rxbuf.data = NULL;
4426 }
4427
4428 if (++i == rx_ring->count)
4429 i = 0;
4430
4431 next_rxd = E1000_RX_DESC(*rx_ring, i);
4432 prefetch(next_rxd);
4433
4434 next_buffer = &rx_ring->buffer_info[i];
4435
4436 cleaned = true;
4437 cleaned_count++;
4438
4439
4440
4441
4442
4443
4444
4445 if (unlikely(!(status & E1000_RXD_STAT_EOP)))
4446 adapter->discarding = true;
4447
4448 if (adapter->discarding) {
4449
4450 netdev_dbg(netdev, "Receive packet consumed multiple buffers\n");
4451 dev_kfree_skb(skb);
4452 if (status & E1000_RXD_STAT_EOP)
4453 adapter->discarding = false;
4454 goto next_desc;
4455 }
4456
4457 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
4458 if (e1000_tbi_should_accept(adapter, status,
4459 rx_desc->errors,
4460 length, data)) {
4461 length--;
4462 } else if (netdev->features & NETIF_F_RXALL) {
4463 goto process_skb;
4464 } else {
4465 dev_kfree_skb(skb);
4466 goto next_desc;
4467 }
4468 }
4469
4470process_skb:
4471 total_rx_bytes += (length - 4);
4472 total_rx_packets++;
4473
4474 if (likely(!(netdev->features & NETIF_F_RXFCS)))
4475
4476
4477
4478 length -= 4;
4479
4480 if (buffer_info->rxbuf.data == NULL)
4481 skb_put(skb, length);
4482 else
4483 skb_trim(skb, length);
4484
4485
4486 e1000_rx_checksum(adapter,
4487 (u32)(status) |
4488 ((u32)(rx_desc->errors) << 24),
4489 le16_to_cpu(rx_desc->csum), skb);
4490
4491 e1000_receive_skb(adapter, status, rx_desc->special, skb);
4492
4493next_desc:
4494 rx_desc->status = 0;
4495
4496
4497 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4498 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4499 cleaned_count = 0;
4500 }
4501
4502
4503 rx_desc = next_rxd;
4504 buffer_info = next_buffer;
4505 }
4506 rx_ring->next_to_clean = i;
4507
4508 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4509 if (cleaned_count)
4510 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4511
4512 adapter->total_rx_packets += total_rx_packets;
4513 adapter->total_rx_bytes += total_rx_bytes;
4514 netdev->stats.rx_bytes += total_rx_bytes;
4515 netdev->stats.rx_packets += total_rx_packets;
4516 return cleaned;
4517}
4518
4519
4520
4521
4522
4523
4524
4525static void
4526e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
4527 struct e1000_rx_ring *rx_ring, int cleaned_count)
4528{
4529 struct pci_dev *pdev = adapter->pdev;
4530 struct e1000_rx_desc *rx_desc;
4531 struct e1000_rx_buffer *buffer_info;
4532 unsigned int i;
4533
4534 i = rx_ring->next_to_use;
4535 buffer_info = &rx_ring->buffer_info[i];
4536
4537 while (cleaned_count--) {
4538
4539 if (!buffer_info->rxbuf.page) {
4540 buffer_info->rxbuf.page = alloc_page(GFP_ATOMIC);
4541 if (unlikely(!buffer_info->rxbuf.page)) {
4542 adapter->alloc_rx_buff_failed++;
4543 break;
4544 }
4545 }
4546
4547 if (!buffer_info->dma) {
4548 buffer_info->dma = dma_map_page(&pdev->dev,
4549 buffer_info->rxbuf.page, 0,
4550 adapter->rx_buffer_len,
4551 DMA_FROM_DEVICE);
4552 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
4553 put_page(buffer_info->rxbuf.page);
4554 buffer_info->rxbuf.page = NULL;
4555 buffer_info->dma = 0;
4556 adapter->alloc_rx_buff_failed++;
4557 break;
4558 }
4559 }
4560
4561 rx_desc = E1000_RX_DESC(*rx_ring, i);
4562 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4563
4564 if (unlikely(++i == rx_ring->count))
4565 i = 0;
4566 buffer_info = &rx_ring->buffer_info[i];
4567 }
4568
4569 if (likely(rx_ring->next_to_use != i)) {
4570 rx_ring->next_to_use = i;
4571 if (unlikely(i-- == 0))
4572 i = (rx_ring->count - 1);
4573
4574
4575
4576
4577
4578
4579 wmb();
4580 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
4581 }
4582}
4583
4584
4585
4586
4587
4588static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4589 struct e1000_rx_ring *rx_ring,
4590 int cleaned_count)
4591{
4592 struct e1000_hw *hw = &adapter->hw;
4593 struct pci_dev *pdev = adapter->pdev;
4594 struct e1000_rx_desc *rx_desc;
4595 struct e1000_rx_buffer *buffer_info;
4596 unsigned int i;
4597 unsigned int bufsz = adapter->rx_buffer_len;
4598
4599 i = rx_ring->next_to_use;
4600 buffer_info = &rx_ring->buffer_info[i];
4601
4602 while (cleaned_count--) {
4603 void *data;
4604
4605 if (buffer_info->rxbuf.data)
4606 goto skip;
4607
4608 data = e1000_alloc_frag(adapter);
4609 if (!data) {
4610
4611 adapter->alloc_rx_buff_failed++;
4612 break;
4613 }
4614
4615
4616 if (!e1000_check_64k_bound(adapter, data, bufsz)) {
4617 void *olddata = data;
4618 e_err(rx_err, "skb align check failed: %u bytes at "
4619 "%p\n", bufsz, data);
4620
4621 data = e1000_alloc_frag(adapter);
4622
4623 if (!data) {
4624 skb_free_frag(olddata);
4625 adapter->alloc_rx_buff_failed++;
4626 break;
4627 }
4628
4629 if (!e1000_check_64k_bound(adapter, data, bufsz)) {
4630
4631 skb_free_frag(data);
4632 skb_free_frag(olddata);
4633 adapter->alloc_rx_buff_failed++;
4634 break;
4635 }
4636
4637
4638 skb_free_frag(olddata);
4639 }
4640 buffer_info->dma = dma_map_single(&pdev->dev,
4641 data,
4642 adapter->rx_buffer_len,
4643 DMA_FROM_DEVICE);
4644 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
4645 skb_free_frag(data);
4646 buffer_info->dma = 0;
4647 adapter->alloc_rx_buff_failed++;
4648 break;
4649 }
4650
4651
4652
4653
4654
4655
4656 if (!e1000_check_64k_bound(adapter,
4657 (void *)(unsigned long)buffer_info->dma,
4658 adapter->rx_buffer_len)) {
4659 e_err(rx_err, "dma align check failed: %u bytes at "
4660 "%p\n", adapter->rx_buffer_len,
4661 (void *)(unsigned long)buffer_info->dma);
4662
4663 dma_unmap_single(&pdev->dev, buffer_info->dma,
4664 adapter->rx_buffer_len,
4665 DMA_FROM_DEVICE);
4666
4667 skb_free_frag(data);
4668 buffer_info->rxbuf.data = NULL;
4669 buffer_info->dma = 0;
4670
4671 adapter->alloc_rx_buff_failed++;
4672 break;
4673 }
4674 buffer_info->rxbuf.data = data;
4675 skip:
4676 rx_desc = E1000_RX_DESC(*rx_ring, i);
4677 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4678
4679 if (unlikely(++i == rx_ring->count))
4680 i = 0;
4681 buffer_info = &rx_ring->buffer_info[i];
4682 }
4683
4684 if (likely(rx_ring->next_to_use != i)) {
4685 rx_ring->next_to_use = i;
4686 if (unlikely(i-- == 0))
4687 i = (rx_ring->count - 1);
4688
4689
4690
4691
4692
4693
4694 wmb();
4695 writel(i, hw->hw_addr + rx_ring->rdt);
4696 }
4697}
4698
4699
4700
4701
4702
4703static void e1000_smartspeed(struct e1000_adapter *adapter)
4704{
4705 struct e1000_hw *hw = &adapter->hw;
4706 u16 phy_status;
4707 u16 phy_ctrl;
4708
4709 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
4710 !(hw->autoneg_advertised & ADVERTISE_1000_FULL))
4711 return;
4712
4713 if (adapter->smartspeed == 0) {
4714
4715
4716
4717 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4718 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT))
4719 return;
4720 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4721 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT))
4722 return;
4723 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4724 if (phy_ctrl & CR_1000T_MS_ENABLE) {
4725 phy_ctrl &= ~CR_1000T_MS_ENABLE;
4726 e1000_write_phy_reg(hw, PHY_1000T_CTRL,
4727 phy_ctrl);
4728 adapter->smartspeed++;
4729 if (!e1000_phy_setup_autoneg(hw) &&
4730 !e1000_read_phy_reg(hw, PHY_CTRL,
4731 &phy_ctrl)) {
4732 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4733 MII_CR_RESTART_AUTO_NEG);
4734 e1000_write_phy_reg(hw, PHY_CTRL,
4735 phy_ctrl);
4736 }
4737 }
4738 return;
4739 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4740
4741 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4742 phy_ctrl |= CR_1000T_MS_ENABLE;
4743 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
4744 if (!e1000_phy_setup_autoneg(hw) &&
4745 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
4746 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4747 MII_CR_RESTART_AUTO_NEG);
4748 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl);
4749 }
4750 }
4751
4752 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4753 adapter->smartspeed = 0;
4754}
4755
4756
4757
4758
4759
4760
4761
4762static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4763{
4764 switch (cmd) {
4765 case SIOCGMIIPHY:
4766 case SIOCGMIIREG:
4767 case SIOCSMIIREG:
4768 return e1000_mii_ioctl(netdev, ifr, cmd);
4769 default:
4770 return -EOPNOTSUPP;
4771 }
4772}
4773
4774
4775
4776
4777
4778
4779
4780static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4781 int cmd)
4782{
4783 struct e1000_adapter *adapter = netdev_priv(netdev);
4784 struct e1000_hw *hw = &adapter->hw;
4785 struct mii_ioctl_data *data = if_mii(ifr);
4786 int retval;
4787 u16 mii_reg;
4788 unsigned long flags;
4789
4790 if (hw->media_type != e1000_media_type_copper)
4791 return -EOPNOTSUPP;
4792
4793 switch (cmd) {
4794 case SIOCGMIIPHY:
4795 data->phy_id = hw->phy_addr;
4796 break;
4797 case SIOCGMIIREG:
4798 spin_lock_irqsave(&adapter->stats_lock, flags);
4799 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
4800 &data->val_out)) {
4801 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4802 return -EIO;
4803 }
4804 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4805 break;
4806 case SIOCSMIIREG:
4807 if (data->reg_num & ~(0x1F))
4808 return -EFAULT;
4809 mii_reg = data->val_in;
4810 spin_lock_irqsave(&adapter->stats_lock, flags);
4811 if (e1000_write_phy_reg(hw, data->reg_num,
4812 mii_reg)) {
4813 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4814 return -EIO;
4815 }
4816 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4817 if (hw->media_type == e1000_media_type_copper) {
4818 switch (data->reg_num) {
4819 case PHY_CTRL:
4820 if (mii_reg & MII_CR_POWER_DOWN)
4821 break;
4822 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4823 hw->autoneg = 1;
4824 hw->autoneg_advertised = 0x2F;
4825 } else {
4826 u32 speed;
4827 if (mii_reg & 0x40)
4828 speed = SPEED_1000;
4829 else if (mii_reg & 0x2000)
4830 speed = SPEED_100;
4831 else
4832 speed = SPEED_10;
4833 retval = e1000_set_spd_dplx(
4834 adapter, speed,
4835 ((mii_reg & 0x100)
4836 ? DUPLEX_FULL :
4837 DUPLEX_HALF));
4838 if (retval)
4839 return retval;
4840 }
4841 if (netif_running(adapter->netdev))
4842 e1000_reinit_locked(adapter);
4843 else
4844 e1000_reset(adapter);
4845 break;
4846 case M88E1000_PHY_SPEC_CTRL:
4847 case M88E1000_EXT_PHY_SPEC_CTRL:
4848 if (e1000_phy_reset(hw))
4849 return -EIO;
4850 break;
4851 }
4852 } else {
4853 switch (data->reg_num) {
4854 case PHY_CTRL:
4855 if (mii_reg & MII_CR_POWER_DOWN)
4856 break;
4857 if (netif_running(adapter->netdev))
4858 e1000_reinit_locked(adapter);
4859 else
4860 e1000_reset(adapter);
4861 break;
4862 }
4863 }
4864 break;
4865 default:
4866 return -EOPNOTSUPP;
4867 }
4868 return E1000_SUCCESS;
4869}
4870
4871void e1000_pci_set_mwi(struct e1000_hw *hw)
4872{
4873 struct e1000_adapter *adapter = hw->back;
4874 int ret_val = pci_set_mwi(adapter->pdev);
4875
4876 if (ret_val)
4877 e_err(probe, "Error in setting MWI\n");
4878}
4879
4880void e1000_pci_clear_mwi(struct e1000_hw *hw)
4881{
4882 struct e1000_adapter *adapter = hw->back;
4883
4884 pci_clear_mwi(adapter->pdev);
4885}
4886
4887int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
4888{
4889 struct e1000_adapter *adapter = hw->back;
4890 return pcix_get_mmrbc(adapter->pdev);
4891}
4892
4893void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
4894{
4895 struct e1000_adapter *adapter = hw->back;
4896 pcix_set_mmrbc(adapter->pdev, mmrbc);
4897}
4898
4899void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
4900{
4901 outl(value, port);
4902}
4903
4904static bool e1000_vlan_used(struct e1000_adapter *adapter)
4905{
4906 u16 vid;
4907
4908 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
4909 return true;
4910 return false;
4911}
4912
4913static void __e1000_vlan_mode(struct e1000_adapter *adapter,
4914 netdev_features_t features)
4915{
4916 struct e1000_hw *hw = &adapter->hw;
4917 u32 ctrl;
4918
4919 ctrl = er32(CTRL);
4920 if (features & NETIF_F_HW_VLAN_CTAG_RX) {
4921
4922 ctrl |= E1000_CTRL_VME;
4923 } else {
4924
4925 ctrl &= ~E1000_CTRL_VME;
4926 }
4927 ew32(CTRL, ctrl);
4928}
4929static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter,
4930 bool filter_on)
4931{
4932 struct e1000_hw *hw = &adapter->hw;
4933 u32 rctl;
4934
4935 if (!test_bit(__E1000_DOWN, &adapter->flags))
4936 e1000_irq_disable(adapter);
4937
4938 __e1000_vlan_mode(adapter, adapter->netdev->features);
4939 if (filter_on) {
4940
4941 rctl = er32(RCTL);
4942 rctl &= ~E1000_RCTL_CFIEN;
4943 if (!(adapter->netdev->flags & IFF_PROMISC))
4944 rctl |= E1000_RCTL_VFE;
4945 ew32(RCTL, rctl);
4946 e1000_update_mng_vlan(adapter);
4947 } else {
4948
4949 rctl = er32(RCTL);
4950 rctl &= ~E1000_RCTL_VFE;
4951 ew32(RCTL, rctl);
4952 }
4953
4954 if (!test_bit(__E1000_DOWN, &adapter->flags))
4955 e1000_irq_enable(adapter);
4956}
4957
4958static void e1000_vlan_mode(struct net_device *netdev,
4959 netdev_features_t features)
4960{
4961 struct e1000_adapter *adapter = netdev_priv(netdev);
4962
4963 if (!test_bit(__E1000_DOWN, &adapter->flags))
4964 e1000_irq_disable(adapter);
4965
4966 __e1000_vlan_mode(adapter, features);
4967
4968 if (!test_bit(__E1000_DOWN, &adapter->flags))
4969 e1000_irq_enable(adapter);
4970}
4971
4972static int e1000_vlan_rx_add_vid(struct net_device *netdev,
4973 __be16 proto, u16 vid)
4974{
4975 struct e1000_adapter *adapter = netdev_priv(netdev);
4976 struct e1000_hw *hw = &adapter->hw;
4977 u32 vfta, index;
4978
4979 if ((hw->mng_cookie.status &
4980 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4981 (vid == adapter->mng_vlan_id))
4982 return 0;
4983
4984 if (!e1000_vlan_used(adapter))
4985 e1000_vlan_filter_on_off(adapter, true);
4986
4987
4988 index = (vid >> 5) & 0x7F;
4989 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
4990 vfta |= (1 << (vid & 0x1F));
4991 e1000_write_vfta(hw, index, vfta);
4992
4993 set_bit(vid, adapter->active_vlans);
4994
4995 return 0;
4996}
4997
4998static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
4999 __be16 proto, u16 vid)
5000{
5001 struct e1000_adapter *adapter = netdev_priv(netdev);
5002 struct e1000_hw *hw = &adapter->hw;
5003 u32 vfta, index;
5004
5005 if (!test_bit(__E1000_DOWN, &adapter->flags))
5006 e1000_irq_disable(adapter);
5007 if (!test_bit(__E1000_DOWN, &adapter->flags))
5008 e1000_irq_enable(adapter);
5009
5010
5011 index = (vid >> 5) & 0x7F;
5012 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
5013 vfta &= ~(1 << (vid & 0x1F));
5014 e1000_write_vfta(hw, index, vfta);
5015
5016 clear_bit(vid, adapter->active_vlans);
5017
5018 if (!e1000_vlan_used(adapter))
5019 e1000_vlan_filter_on_off(adapter, false);
5020
5021 return 0;
5022}
5023
5024static void e1000_restore_vlan(struct e1000_adapter *adapter)
5025{
5026 u16 vid;
5027
5028 if (!e1000_vlan_used(adapter))
5029 return;
5030
5031 e1000_vlan_filter_on_off(adapter, true);
5032 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
5033 e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
5034}
5035
5036int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
5037{
5038 struct e1000_hw *hw = &adapter->hw;
5039
5040 hw->autoneg = 0;
5041
5042
5043
5044
5045 if ((spd & 1) || (dplx & ~1))
5046 goto err_inval;
5047
5048
5049 if ((hw->media_type == e1000_media_type_fiber) &&
5050 spd != SPEED_1000 &&
5051 dplx != DUPLEX_FULL)
5052 goto err_inval;
5053
5054 switch (spd + dplx) {
5055 case SPEED_10 + DUPLEX_HALF:
5056 hw->forced_speed_duplex = e1000_10_half;
5057 break;
5058 case SPEED_10 + DUPLEX_FULL:
5059 hw->forced_speed_duplex = e1000_10_full;
5060 break;
5061 case SPEED_100 + DUPLEX_HALF:
5062 hw->forced_speed_duplex = e1000_100_half;
5063 break;
5064 case SPEED_100 + DUPLEX_FULL:
5065 hw->forced_speed_duplex = e1000_100_full;
5066 break;
5067 case SPEED_1000 + DUPLEX_FULL:
5068 hw->autoneg = 1;
5069 hw->autoneg_advertised = ADVERTISE_1000_FULL;
5070 break;
5071 case SPEED_1000 + DUPLEX_HALF:
5072 default:
5073 goto err_inval;
5074 }
5075
5076
5077 hw->mdix = AUTO_ALL_MODES;
5078
5079 return 0;
5080
5081err_inval:
5082 e_err(probe, "Unsupported Speed/Duplex configuration\n");
5083 return -EINVAL;
5084}
5085
5086static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
5087{
5088 struct net_device *netdev = pci_get_drvdata(pdev);
5089 struct e1000_adapter *adapter = netdev_priv(netdev);
5090 struct e1000_hw *hw = &adapter->hw;
5091 u32 ctrl, ctrl_ext, rctl, status;
5092 u32 wufc = adapter->wol;
5093#ifdef CONFIG_PM
5094 int retval = 0;
5095#endif
5096
5097 netif_device_detach(netdev);
5098
5099 if (netif_running(netdev)) {
5100 int count = E1000_CHECK_RESET_COUNT;
5101
5102 while (test_bit(__E1000_RESETTING, &adapter->flags) && count--)
5103 usleep_range(10000, 20000);
5104
5105 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
5106 e1000_down(adapter);
5107 }
5108
5109#ifdef CONFIG_PM
5110 retval = pci_save_state(pdev);
5111 if (retval)
5112 return retval;
5113#endif
5114
5115 status = er32(STATUS);
5116 if (status & E1000_STATUS_LU)
5117 wufc &= ~E1000_WUFC_LNKC;
5118
5119 if (wufc) {
5120 e1000_setup_rctl(adapter);
5121 e1000_set_rx_mode(netdev);
5122
5123 rctl = er32(RCTL);
5124
5125
5126 if (wufc & E1000_WUFC_MC)
5127 rctl |= E1000_RCTL_MPE;
5128
5129
5130 ew32(RCTL, rctl | E1000_RCTL_EN);
5131
5132 if (hw->mac_type >= e1000_82540) {
5133 ctrl = er32(CTRL);
5134
5135 #define E1000_CTRL_ADVD3WUC 0x00100000
5136
5137 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5138 ctrl |= E1000_CTRL_ADVD3WUC |
5139 E1000_CTRL_EN_PHY_PWR_MGMT;
5140 ew32(CTRL, ctrl);
5141 }
5142
5143 if (hw->media_type == e1000_media_type_fiber ||
5144 hw->media_type == e1000_media_type_internal_serdes) {
5145
5146 ctrl_ext = er32(CTRL_EXT);
5147 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
5148 ew32(CTRL_EXT, ctrl_ext);
5149 }
5150
5151 ew32(WUC, E1000_WUC_PME_EN);
5152 ew32(WUFC, wufc);
5153 } else {
5154 ew32(WUC, 0);
5155 ew32(WUFC, 0);
5156 }
5157
5158 e1000_release_manageability(adapter);
5159
5160 *enable_wake = !!wufc;
5161
5162
5163 if (adapter->en_mng_pt)
5164 *enable_wake = true;
5165
5166 if (netif_running(netdev))
5167 e1000_free_irq(adapter);
5168
5169 pci_disable_device(pdev);
5170
5171 return 0;
5172}
5173
5174#ifdef CONFIG_PM
5175static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
5176{
5177 int retval;
5178 bool wake;
5179
5180 retval = __e1000_shutdown(pdev, &wake);
5181 if (retval)
5182 return retval;
5183
5184 if (wake) {
5185 pci_prepare_to_sleep(pdev);
5186 } else {
5187 pci_wake_from_d3(pdev, false);
5188 pci_set_power_state(pdev, PCI_D3hot);
5189 }
5190
5191 return 0;
5192}
5193
5194static int e1000_resume(struct pci_dev *pdev)
5195{
5196 struct net_device *netdev = pci_get_drvdata(pdev);
5197 struct e1000_adapter *adapter = netdev_priv(netdev);
5198 struct e1000_hw *hw = &adapter->hw;
5199 u32 err;
5200
5201 pci_set_power_state(pdev, PCI_D0);
5202 pci_restore_state(pdev);
5203 pci_save_state(pdev);
5204
5205 if (adapter->need_ioport)
5206 err = pci_enable_device(pdev);
5207 else
5208 err = pci_enable_device_mem(pdev);
5209 if (err) {
5210 pr_err("Cannot enable PCI device from suspend\n");
5211 return err;
5212 }
5213 pci_set_master(pdev);
5214
5215 pci_enable_wake(pdev, PCI_D3hot, 0);
5216 pci_enable_wake(pdev, PCI_D3cold, 0);
5217
5218 if (netif_running(netdev)) {
5219 err = e1000_request_irq(adapter);
5220 if (err)
5221 return err;
5222 }
5223
5224 e1000_power_up_phy(adapter);
5225 e1000_reset(adapter);
5226 ew32(WUS, ~0);
5227
5228 e1000_init_manageability(adapter);
5229
5230 if (netif_running(netdev))
5231 e1000_up(adapter);
5232
5233 netif_device_attach(netdev);
5234
5235 return 0;
5236}
5237#endif
5238
5239static void e1000_shutdown(struct pci_dev *pdev)
5240{
5241 bool wake;
5242
5243 __e1000_shutdown(pdev, &wake);
5244
5245 if (system_state == SYSTEM_POWER_OFF) {
5246 pci_wake_from_d3(pdev, wake);
5247 pci_set_power_state(pdev, PCI_D3hot);
5248 }
5249}
5250
5251#ifdef CONFIG_NET_POLL_CONTROLLER
5252
5253
5254
5255
5256static void e1000_netpoll(struct net_device *netdev)
5257{
5258 struct e1000_adapter *adapter = netdev_priv(netdev);
5259
5260 disable_irq(adapter->pdev->irq);
5261 e1000_intr(adapter->pdev->irq, netdev);
5262 enable_irq(adapter->pdev->irq);
5263}
5264#endif
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5275 pci_channel_state_t state)
5276{
5277 struct net_device *netdev = pci_get_drvdata(pdev);
5278 struct e1000_adapter *adapter = netdev_priv(netdev);
5279
5280 netif_device_detach(netdev);
5281
5282 if (state == pci_channel_io_perm_failure)
5283 return PCI_ERS_RESULT_DISCONNECT;
5284
5285 if (netif_running(netdev))
5286 e1000_down(adapter);
5287 pci_disable_device(pdev);
5288
5289
5290 return PCI_ERS_RESULT_NEED_RESET;
5291}
5292
5293
5294
5295
5296
5297
5298
5299
5300static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5301{
5302 struct net_device *netdev = pci_get_drvdata(pdev);
5303 struct e1000_adapter *adapter = netdev_priv(netdev);
5304 struct e1000_hw *hw = &adapter->hw;
5305 int err;
5306
5307 if (adapter->need_ioport)
5308 err = pci_enable_device(pdev);
5309 else
5310 err = pci_enable_device_mem(pdev);
5311 if (err) {
5312 pr_err("Cannot re-enable PCI device after reset.\n");
5313 return PCI_ERS_RESULT_DISCONNECT;
5314 }
5315 pci_set_master(pdev);
5316
5317 pci_enable_wake(pdev, PCI_D3hot, 0);
5318 pci_enable_wake(pdev, PCI_D3cold, 0);
5319
5320 e1000_reset(adapter);
5321 ew32(WUS, ~0);
5322
5323 return PCI_ERS_RESULT_RECOVERED;
5324}
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334static void e1000_io_resume(struct pci_dev *pdev)
5335{
5336 struct net_device *netdev = pci_get_drvdata(pdev);
5337 struct e1000_adapter *adapter = netdev_priv(netdev);
5338
5339 e1000_init_manageability(adapter);
5340
5341 if (netif_running(netdev)) {
5342 if (e1000_up(adapter)) {
5343 pr_info("can't bring device back up after reset\n");
5344 return;
5345 }
5346 }
5347
5348 netif_device_attach(netdev);
5349}
5350
5351
5352