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29#include "e1000.h"
30#include <net/ip6_checksum.h>
31
32char e1000_driver_name[] = "e1000";
33static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
34#define DRV_VERSION "7.3.21-k5-NAPI"
35const char e1000_driver_version[] = DRV_VERSION;
36static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
37
38
39
40
41
42
43
44
45static struct pci_device_id e1000_pci_tbl[] = {
46 INTEL_E1000_ETHERNET_DEVICE(0x1000),
47 INTEL_E1000_ETHERNET_DEVICE(0x1001),
48 INTEL_E1000_ETHERNET_DEVICE(0x1004),
49 INTEL_E1000_ETHERNET_DEVICE(0x1008),
50 INTEL_E1000_ETHERNET_DEVICE(0x1009),
51 INTEL_E1000_ETHERNET_DEVICE(0x100C),
52 INTEL_E1000_ETHERNET_DEVICE(0x100D),
53 INTEL_E1000_ETHERNET_DEVICE(0x100E),
54 INTEL_E1000_ETHERNET_DEVICE(0x100F),
55 INTEL_E1000_ETHERNET_DEVICE(0x1010),
56 INTEL_E1000_ETHERNET_DEVICE(0x1011),
57 INTEL_E1000_ETHERNET_DEVICE(0x1012),
58 INTEL_E1000_ETHERNET_DEVICE(0x1013),
59 INTEL_E1000_ETHERNET_DEVICE(0x1014),
60 INTEL_E1000_ETHERNET_DEVICE(0x1015),
61 INTEL_E1000_ETHERNET_DEVICE(0x1016),
62 INTEL_E1000_ETHERNET_DEVICE(0x1017),
63 INTEL_E1000_ETHERNET_DEVICE(0x1018),
64 INTEL_E1000_ETHERNET_DEVICE(0x1019),
65 INTEL_E1000_ETHERNET_DEVICE(0x101A),
66 INTEL_E1000_ETHERNET_DEVICE(0x101D),
67 INTEL_E1000_ETHERNET_DEVICE(0x101E),
68 INTEL_E1000_ETHERNET_DEVICE(0x1026),
69 INTEL_E1000_ETHERNET_DEVICE(0x1027),
70 INTEL_E1000_ETHERNET_DEVICE(0x1028),
71 INTEL_E1000_ETHERNET_DEVICE(0x1075),
72 INTEL_E1000_ETHERNET_DEVICE(0x1076),
73 INTEL_E1000_ETHERNET_DEVICE(0x1077),
74 INTEL_E1000_ETHERNET_DEVICE(0x1078),
75 INTEL_E1000_ETHERNET_DEVICE(0x1079),
76 INTEL_E1000_ETHERNET_DEVICE(0x107A),
77 INTEL_E1000_ETHERNET_DEVICE(0x107B),
78 INTEL_E1000_ETHERNET_DEVICE(0x107C),
79 INTEL_E1000_ETHERNET_DEVICE(0x108A),
80 INTEL_E1000_ETHERNET_DEVICE(0x1099),
81 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
82
83 {0,}
84};
85
86MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
87
88int e1000_up(struct e1000_adapter *adapter);
89void e1000_down(struct e1000_adapter *adapter);
90void e1000_reinit_locked(struct e1000_adapter *adapter);
91void e1000_reset(struct e1000_adapter *adapter);
92int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
93int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
94int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
95void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
96void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
97static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
98 struct e1000_tx_ring *txdr);
99static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
100 struct e1000_rx_ring *rxdr);
101static void e1000_free_tx_resources(struct e1000_adapter *adapter,
102 struct e1000_tx_ring *tx_ring);
103static void e1000_free_rx_resources(struct e1000_adapter *adapter,
104 struct e1000_rx_ring *rx_ring);
105void e1000_update_stats(struct e1000_adapter *adapter);
106
107static int e1000_init_module(void);
108static void e1000_exit_module(void);
109static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
110static void __devexit e1000_remove(struct pci_dev *pdev);
111static int e1000_alloc_queues(struct e1000_adapter *adapter);
112static int e1000_sw_init(struct e1000_adapter *adapter);
113static int e1000_open(struct net_device *netdev);
114static int e1000_close(struct net_device *netdev);
115static void e1000_configure_tx(struct e1000_adapter *adapter);
116static void e1000_configure_rx(struct e1000_adapter *adapter);
117static void e1000_setup_rctl(struct e1000_adapter *adapter);
118static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
119static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
120static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
121 struct e1000_tx_ring *tx_ring);
122static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
123 struct e1000_rx_ring *rx_ring);
124static void e1000_set_rx_mode(struct net_device *netdev);
125static void e1000_update_phy_info(unsigned long data);
126static void e1000_watchdog(unsigned long data);
127static void e1000_82547_tx_fifo_stall(unsigned long data);
128static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
129 struct net_device *netdev);
130static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
131static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
132static int e1000_set_mac(struct net_device *netdev, void *p);
133static irqreturn_t e1000_intr(int irq, void *data);
134static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
135 struct e1000_tx_ring *tx_ring);
136static int e1000_clean(struct napi_struct *napi, int budget);
137static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
138 struct e1000_rx_ring *rx_ring,
139 int *work_done, int work_to_do);
140static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
141 struct e1000_rx_ring *rx_ring,
142 int *work_done, int work_to_do);
143static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
144 struct e1000_rx_ring *rx_ring,
145 int cleaned_count);
146static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
147 struct e1000_rx_ring *rx_ring,
148 int cleaned_count);
149static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
150static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
151 int cmd);
152static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
153static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
154static void e1000_tx_timeout(struct net_device *dev);
155static void e1000_reset_task(struct work_struct *work);
156static void e1000_smartspeed(struct e1000_adapter *adapter);
157static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
158 struct sk_buff *skb);
159
160static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
161static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
162static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
163static void e1000_restore_vlan(struct e1000_adapter *adapter);
164
165#ifdef CONFIG_PM
166static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
167static int e1000_resume(struct pci_dev *pdev);
168#endif
169static void e1000_shutdown(struct pci_dev *pdev);
170
171#ifdef CONFIG_NET_POLL_CONTROLLER
172
173static void e1000_netpoll (struct net_device *netdev);
174#endif
175
176#define COPYBREAK_DEFAULT 256
177static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
178module_param(copybreak, uint, 0644);
179MODULE_PARM_DESC(copybreak,
180 "Maximum size of packet that is copied to a new buffer on receive");
181
182static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
183 pci_channel_state_t state);
184static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
185static void e1000_io_resume(struct pci_dev *pdev);
186
187static struct pci_error_handlers e1000_err_handler = {
188 .error_detected = e1000_io_error_detected,
189 .slot_reset = e1000_io_slot_reset,
190 .resume = e1000_io_resume,
191};
192
193static struct pci_driver e1000_driver = {
194 .name = e1000_driver_name,
195 .id_table = e1000_pci_tbl,
196 .probe = e1000_probe,
197 .remove = __devexit_p(e1000_remove),
198#ifdef CONFIG_PM
199
200 .suspend = e1000_suspend,
201 .resume = e1000_resume,
202#endif
203 .shutdown = e1000_shutdown,
204 .err_handler = &e1000_err_handler
205};
206
207MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
208MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
209MODULE_LICENSE("GPL");
210MODULE_VERSION(DRV_VERSION);
211
212static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
213module_param(debug, int, 0);
214MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
215
216
217
218
219
220
221
222
223static int __init e1000_init_module(void)
224{
225 int ret;
226 printk(KERN_INFO "%s - version %s\n",
227 e1000_driver_string, e1000_driver_version);
228
229 printk(KERN_INFO "%s\n", e1000_copyright);
230
231 ret = pci_register_driver(&e1000_driver);
232 if (copybreak != COPYBREAK_DEFAULT) {
233 if (copybreak == 0)
234 printk(KERN_INFO "e1000: copybreak disabled\n");
235 else
236 printk(KERN_INFO "e1000: copybreak enabled for "
237 "packets <= %u bytes\n", copybreak);
238 }
239 return ret;
240}
241
242module_init(e1000_init_module);
243
244
245
246
247
248
249
250
251static void __exit e1000_exit_module(void)
252{
253 pci_unregister_driver(&e1000_driver);
254}
255
256module_exit(e1000_exit_module);
257
258static int e1000_request_irq(struct e1000_adapter *adapter)
259{
260 struct net_device *netdev = adapter->netdev;
261 irq_handler_t handler = e1000_intr;
262 int irq_flags = IRQF_SHARED;
263 int err;
264
265 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
266 netdev);
267 if (err) {
268 DPRINTK(PROBE, ERR,
269 "Unable to allocate interrupt Error: %d\n", err);
270 }
271
272 return err;
273}
274
275static void e1000_free_irq(struct e1000_adapter *adapter)
276{
277 struct net_device *netdev = adapter->netdev;
278
279 free_irq(adapter->pdev->irq, netdev);
280}
281
282
283
284
285
286
287static void e1000_irq_disable(struct e1000_adapter *adapter)
288{
289 struct e1000_hw *hw = &adapter->hw;
290
291 ew32(IMC, ~0);
292 E1000_WRITE_FLUSH();
293 synchronize_irq(adapter->pdev->irq);
294}
295
296
297
298
299
300
301static void e1000_irq_enable(struct e1000_adapter *adapter)
302{
303 struct e1000_hw *hw = &adapter->hw;
304
305 ew32(IMS, IMS_ENABLE_MASK);
306 E1000_WRITE_FLUSH();
307}
308
309static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
310{
311 struct e1000_hw *hw = &adapter->hw;
312 struct net_device *netdev = adapter->netdev;
313 u16 vid = hw->mng_cookie.vlan_id;
314 u16 old_vid = adapter->mng_vlan_id;
315 if (adapter->vlgrp) {
316 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
317 if (hw->mng_cookie.status &
318 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
319 e1000_vlan_rx_add_vid(netdev, vid);
320 adapter->mng_vlan_id = vid;
321 } else
322 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
323
324 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
325 (vid != old_vid) &&
326 !vlan_group_get_device(adapter->vlgrp, old_vid))
327 e1000_vlan_rx_kill_vid(netdev, old_vid);
328 } else
329 adapter->mng_vlan_id = vid;
330 }
331}
332
333static void e1000_init_manageability(struct e1000_adapter *adapter)
334{
335 struct e1000_hw *hw = &adapter->hw;
336
337 if (adapter->en_mng_pt) {
338 u32 manc = er32(MANC);
339
340
341 manc &= ~(E1000_MANC_ARP_EN);
342
343 ew32(MANC, manc);
344 }
345}
346
347static void e1000_release_manageability(struct e1000_adapter *adapter)
348{
349 struct e1000_hw *hw = &adapter->hw;
350
351 if (adapter->en_mng_pt) {
352 u32 manc = er32(MANC);
353
354
355 manc |= E1000_MANC_ARP_EN;
356
357 ew32(MANC, manc);
358 }
359}
360
361
362
363
364
365static void e1000_configure(struct e1000_adapter *adapter)
366{
367 struct net_device *netdev = adapter->netdev;
368 int i;
369
370 e1000_set_rx_mode(netdev);
371
372 e1000_restore_vlan(adapter);
373 e1000_init_manageability(adapter);
374
375 e1000_configure_tx(adapter);
376 e1000_setup_rctl(adapter);
377 e1000_configure_rx(adapter);
378
379
380
381 for (i = 0; i < adapter->num_rx_queues; i++) {
382 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
383 adapter->alloc_rx_buf(adapter, ring,
384 E1000_DESC_UNUSED(ring));
385 }
386
387 adapter->tx_queue_len = netdev->tx_queue_len;
388}
389
390int e1000_up(struct e1000_adapter *adapter)
391{
392 struct e1000_hw *hw = &adapter->hw;
393
394
395 e1000_configure(adapter);
396
397 clear_bit(__E1000_DOWN, &adapter->flags);
398
399 napi_enable(&adapter->napi);
400
401 e1000_irq_enable(adapter);
402
403 netif_wake_queue(adapter->netdev);
404
405
406 ew32(ICS, E1000_ICS_LSC);
407 return 0;
408}
409
410
411
412
413
414
415
416
417
418
419
420void e1000_power_up_phy(struct e1000_adapter *adapter)
421{
422 struct e1000_hw *hw = &adapter->hw;
423 u16 mii_reg = 0;
424
425
426 if (hw->media_type == e1000_media_type_copper) {
427
428
429 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
430 mii_reg &= ~MII_CR_POWER_DOWN;
431 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
432 }
433}
434
435static void e1000_power_down_phy(struct e1000_adapter *adapter)
436{
437 struct e1000_hw *hw = &adapter->hw;
438
439
440
441
442
443
444 if (!adapter->wol && hw->mac_type >= e1000_82540 &&
445 hw->media_type == e1000_media_type_copper) {
446 u16 mii_reg = 0;
447
448 switch (hw->mac_type) {
449 case e1000_82540:
450 case e1000_82545:
451 case e1000_82545_rev_3:
452 case e1000_82546:
453 case e1000_82546_rev_3:
454 case e1000_82541:
455 case e1000_82541_rev_2:
456 case e1000_82547:
457 case e1000_82547_rev_2:
458 if (er32(MANC) & E1000_MANC_SMBUS_EN)
459 goto out;
460 break;
461 default:
462 goto out;
463 }
464 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
465 mii_reg |= MII_CR_POWER_DOWN;
466 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
467 mdelay(1);
468 }
469out:
470 return;
471}
472
473void e1000_down(struct e1000_adapter *adapter)
474{
475 struct e1000_hw *hw = &adapter->hw;
476 struct net_device *netdev = adapter->netdev;
477 u32 rctl, tctl;
478
479
480
481 set_bit(__E1000_DOWN, &adapter->flags);
482
483
484 rctl = er32(RCTL);
485 ew32(RCTL, rctl & ~E1000_RCTL_EN);
486
487
488 netif_tx_disable(netdev);
489
490
491 tctl = er32(TCTL);
492 tctl &= ~E1000_TCTL_EN;
493 ew32(TCTL, tctl);
494
495 E1000_WRITE_FLUSH();
496 msleep(10);
497
498 napi_disable(&adapter->napi);
499
500 e1000_irq_disable(adapter);
501
502 del_timer_sync(&adapter->tx_fifo_stall_timer);
503 del_timer_sync(&adapter->watchdog_timer);
504 del_timer_sync(&adapter->phy_info_timer);
505
506 netdev->tx_queue_len = adapter->tx_queue_len;
507 adapter->link_speed = 0;
508 adapter->link_duplex = 0;
509 netif_carrier_off(netdev);
510
511 e1000_reset(adapter);
512 e1000_clean_all_tx_rings(adapter);
513 e1000_clean_all_rx_rings(adapter);
514}
515
516void e1000_reinit_locked(struct e1000_adapter *adapter)
517{
518 WARN_ON(in_interrupt());
519 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
520 msleep(1);
521 e1000_down(adapter);
522 e1000_up(adapter);
523 clear_bit(__E1000_RESETTING, &adapter->flags);
524}
525
526void e1000_reset(struct e1000_adapter *adapter)
527{
528 struct e1000_hw *hw = &adapter->hw;
529 u32 pba = 0, tx_space, min_tx_space, min_rx_space;
530 bool legacy_pba_adjust = false;
531 u16 hwm;
532
533
534
535
536
537 switch (hw->mac_type) {
538 case e1000_82542_rev2_0:
539 case e1000_82542_rev2_1:
540 case e1000_82543:
541 case e1000_82544:
542 case e1000_82540:
543 case e1000_82541:
544 case e1000_82541_rev_2:
545 legacy_pba_adjust = true;
546 pba = E1000_PBA_48K;
547 break;
548 case e1000_82545:
549 case e1000_82545_rev_3:
550 case e1000_82546:
551 case e1000_82546_rev_3:
552 pba = E1000_PBA_48K;
553 break;
554 case e1000_82547:
555 case e1000_82547_rev_2:
556 legacy_pba_adjust = true;
557 pba = E1000_PBA_30K;
558 break;
559 case e1000_undefined:
560 case e1000_num_macs:
561 break;
562 }
563
564 if (legacy_pba_adjust) {
565 if (hw->max_frame_size > E1000_RXBUFFER_8192)
566 pba -= 8;
567
568 if (hw->mac_type == e1000_82547) {
569 adapter->tx_fifo_head = 0;
570 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
571 adapter->tx_fifo_size =
572 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
573 atomic_set(&adapter->tx_fifo_stall, 0);
574 }
575 } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
576
577 ew32(PBA, pba);
578
579
580
581
582
583
584
585 pba = er32(PBA);
586
587 tx_space = pba >> 16;
588
589 pba &= 0xffff;
590
591
592
593
594 min_tx_space = (hw->max_frame_size +
595 sizeof(struct e1000_tx_desc) -
596 ETH_FCS_LEN) * 2;
597 min_tx_space = ALIGN(min_tx_space, 1024);
598 min_tx_space >>= 10;
599
600 min_rx_space = hw->max_frame_size;
601 min_rx_space = ALIGN(min_rx_space, 1024);
602 min_rx_space >>= 10;
603
604
605
606
607 if (tx_space < min_tx_space &&
608 ((min_tx_space - tx_space) < pba)) {
609 pba = pba - (min_tx_space - tx_space);
610
611
612 switch (hw->mac_type) {
613 case e1000_82545 ... e1000_82546_rev_3:
614 pba &= ~(E1000_PBA_8K - 1);
615 break;
616 default:
617 break;
618 }
619
620
621
622 if (pba < min_rx_space)
623 pba = min_rx_space;
624 }
625 }
626
627 ew32(PBA, pba);
628
629
630
631
632
633
634
635
636
637
638
639 hwm = min(((pba << 10) * 9 / 10),
640 ((pba << 10) - hw->max_frame_size));
641
642 hw->fc_high_water = hwm & 0xFFF8;
643 hw->fc_low_water = hw->fc_high_water - 8;
644 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
645 hw->fc_send_xon = 1;
646 hw->fc = hw->original_fc;
647
648
649 e1000_reset_hw(hw);
650 if (hw->mac_type >= e1000_82544)
651 ew32(WUC, 0);
652
653 if (e1000_init_hw(hw))
654 DPRINTK(PROBE, ERR, "Hardware Error\n");
655 e1000_update_mng_vlan(adapter);
656
657
658 if (hw->mac_type >= e1000_82544 &&
659 hw->autoneg == 1 &&
660 hw->autoneg_advertised == ADVERTISE_1000_FULL) {
661 u32 ctrl = er32(CTRL);
662
663
664
665 ctrl &= ~E1000_CTRL_SWDPIN3;
666 ew32(CTRL, ctrl);
667 }
668
669
670 ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
671
672 e1000_reset_adaptive(hw);
673 e1000_phy_get_info(hw, &adapter->phy_info);
674
675 e1000_release_manageability(adapter);
676}
677
678
679
680
681static void e1000_dump_eeprom(struct e1000_adapter *adapter)
682{
683 struct net_device *netdev = adapter->netdev;
684 struct ethtool_eeprom eeprom;
685 const struct ethtool_ops *ops = netdev->ethtool_ops;
686 u8 *data;
687 int i;
688 u16 csum_old, csum_new = 0;
689
690 eeprom.len = ops->get_eeprom_len(netdev);
691 eeprom.offset = 0;
692
693 data = kmalloc(eeprom.len, GFP_KERNEL);
694 if (!data) {
695 printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
696 " data\n");
697 return;
698 }
699
700 ops->get_eeprom(netdev, &eeprom, data);
701
702 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
703 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
704 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
705 csum_new += data[i] + (data[i + 1] << 8);
706 csum_new = EEPROM_SUM - csum_new;
707
708 printk(KERN_ERR "/*********************/\n");
709 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
710 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
711
712 printk(KERN_ERR "Offset Values\n");
713 printk(KERN_ERR "======== ======\n");
714 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
715
716 printk(KERN_ERR "Include this output when contacting your support "
717 "provider.\n");
718 printk(KERN_ERR "This is not a software error! Something bad "
719 "happened to your hardware or\n");
720 printk(KERN_ERR "EEPROM image. Ignoring this "
721 "problem could result in further problems,\n");
722 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
723 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
724 "which is invalid\n");
725 printk(KERN_ERR "and requires you to set the proper MAC "
726 "address manually before continuing\n");
727 printk(KERN_ERR "to enable this network device.\n");
728 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
729 "to your hardware vendor\n");
730 printk(KERN_ERR "or Intel Customer Support.\n");
731 printk(KERN_ERR "/*********************/\n");
732
733 kfree(data);
734}
735
736
737
738
739
740
741
742static int e1000_is_need_ioport(struct pci_dev *pdev)
743{
744 switch (pdev->device) {
745 case E1000_DEV_ID_82540EM:
746 case E1000_DEV_ID_82540EM_LOM:
747 case E1000_DEV_ID_82540EP:
748 case E1000_DEV_ID_82540EP_LOM:
749 case E1000_DEV_ID_82540EP_LP:
750 case E1000_DEV_ID_82541EI:
751 case E1000_DEV_ID_82541EI_MOBILE:
752 case E1000_DEV_ID_82541ER:
753 case E1000_DEV_ID_82541ER_LOM:
754 case E1000_DEV_ID_82541GI:
755 case E1000_DEV_ID_82541GI_LF:
756 case E1000_DEV_ID_82541GI_MOBILE:
757 case E1000_DEV_ID_82544EI_COPPER:
758 case E1000_DEV_ID_82544EI_FIBER:
759 case E1000_DEV_ID_82544GC_COPPER:
760 case E1000_DEV_ID_82544GC_LOM:
761 case E1000_DEV_ID_82545EM_COPPER:
762 case E1000_DEV_ID_82545EM_FIBER:
763 case E1000_DEV_ID_82546EB_COPPER:
764 case E1000_DEV_ID_82546EB_FIBER:
765 case E1000_DEV_ID_82546EB_QUAD_COPPER:
766 return true;
767 default:
768 return false;
769 }
770}
771
772static const struct net_device_ops e1000_netdev_ops = {
773 .ndo_open = e1000_open,
774 .ndo_stop = e1000_close,
775 .ndo_start_xmit = e1000_xmit_frame,
776 .ndo_get_stats = e1000_get_stats,
777 .ndo_set_rx_mode = e1000_set_rx_mode,
778 .ndo_set_mac_address = e1000_set_mac,
779 .ndo_tx_timeout = e1000_tx_timeout,
780 .ndo_change_mtu = e1000_change_mtu,
781 .ndo_do_ioctl = e1000_ioctl,
782 .ndo_validate_addr = eth_validate_addr,
783
784 .ndo_vlan_rx_register = e1000_vlan_rx_register,
785 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
786 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
787#ifdef CONFIG_NET_POLL_CONTROLLER
788 .ndo_poll_controller = e1000_netpoll,
789#endif
790};
791
792
793
794
795
796
797
798
799
800
801
802
803static int __devinit e1000_probe(struct pci_dev *pdev,
804 const struct pci_device_id *ent)
805{
806 struct net_device *netdev;
807 struct e1000_adapter *adapter;
808 struct e1000_hw *hw;
809
810 static int cards_found = 0;
811 static int global_quad_port_a = 0;
812 int i, err, pci_using_dac;
813 u16 eeprom_data = 0;
814 u16 eeprom_apme_mask = E1000_EEPROM_APME;
815 int bars, need_ioport;
816
817
818 need_ioport = e1000_is_need_ioport(pdev);
819 if (need_ioport) {
820 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
821 err = pci_enable_device(pdev);
822 } else {
823 bars = pci_select_bars(pdev, IORESOURCE_MEM);
824 err = pci_enable_device_mem(pdev);
825 }
826 if (err)
827 return err;
828
829 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
830 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
831 pci_using_dac = 1;
832 } else {
833 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
834 if (err) {
835 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
836 if (err) {
837 E1000_ERR("No usable DMA configuration, "
838 "aborting\n");
839 goto err_dma;
840 }
841 }
842 pci_using_dac = 0;
843 }
844
845 err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
846 if (err)
847 goto err_pci_reg;
848
849 pci_set_master(pdev);
850
851 err = -ENOMEM;
852 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
853 if (!netdev)
854 goto err_alloc_etherdev;
855
856 SET_NETDEV_DEV(netdev, &pdev->dev);
857
858 pci_set_drvdata(pdev, netdev);
859 adapter = netdev_priv(netdev);
860 adapter->netdev = netdev;
861 adapter->pdev = pdev;
862 adapter->msg_enable = (1 << debug) - 1;
863 adapter->bars = bars;
864 adapter->need_ioport = need_ioport;
865
866 hw = &adapter->hw;
867 hw->back = adapter;
868
869 err = -EIO;
870 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0);
871 if (!hw->hw_addr)
872 goto err_ioremap;
873
874 if (adapter->need_ioport) {
875 for (i = BAR_1; i <= BAR_5; i++) {
876 if (pci_resource_len(pdev, i) == 0)
877 continue;
878 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
879 hw->io_base = pci_resource_start(pdev, i);
880 break;
881 }
882 }
883 }
884
885 netdev->netdev_ops = &e1000_netdev_ops;
886 e1000_set_ethtool_ops(netdev);
887 netdev->watchdog_timeo = 5 * HZ;
888 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
889
890 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
891
892 adapter->bd_number = cards_found;
893
894
895
896 err = e1000_sw_init(adapter);
897 if (err)
898 goto err_sw_init;
899
900 err = -EIO;
901
902 if (hw->mac_type >= e1000_82543) {
903 netdev->features = NETIF_F_SG |
904 NETIF_F_HW_CSUM |
905 NETIF_F_HW_VLAN_TX |
906 NETIF_F_HW_VLAN_RX |
907 NETIF_F_HW_VLAN_FILTER;
908 }
909
910 if ((hw->mac_type >= e1000_82544) &&
911 (hw->mac_type != e1000_82547))
912 netdev->features |= NETIF_F_TSO;
913
914 if (pci_using_dac)
915 netdev->features |= NETIF_F_HIGHDMA;
916
917 netdev->vlan_features |= NETIF_F_TSO;
918 netdev->vlan_features |= NETIF_F_HW_CSUM;
919 netdev->vlan_features |= NETIF_F_SG;
920
921 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
922
923
924 if (e1000_init_eeprom_params(hw)) {
925 E1000_ERR("EEPROM initialization failed\n");
926 goto err_eeprom;
927 }
928
929
930
931
932 e1000_reset_hw(hw);
933
934
935 if (e1000_validate_eeprom_checksum(hw) < 0) {
936 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
937 e1000_dump_eeprom(adapter);
938
939
940
941
942
943
944
945
946 memset(hw->mac_addr, 0, netdev->addr_len);
947 } else {
948
949 if (e1000_read_mac_addr(hw))
950 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
951 }
952
953 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
954 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len);
955
956 if (!is_valid_ether_addr(netdev->perm_addr))
957 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
958
959 e1000_get_bus_info(hw);
960
961 init_timer(&adapter->tx_fifo_stall_timer);
962 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
963 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter;
964
965 init_timer(&adapter->watchdog_timer);
966 adapter->watchdog_timer.function = &e1000_watchdog;
967 adapter->watchdog_timer.data = (unsigned long) adapter;
968
969 init_timer(&adapter->phy_info_timer);
970 adapter->phy_info_timer.function = &e1000_update_phy_info;
971 adapter->phy_info_timer.data = (unsigned long)adapter;
972
973 INIT_WORK(&adapter->reset_task, e1000_reset_task);
974
975 e1000_check_options(adapter);
976
977
978
979
980
981
982 switch (hw->mac_type) {
983 case e1000_82542_rev2_0:
984 case e1000_82542_rev2_1:
985 case e1000_82543:
986 break;
987 case e1000_82544:
988 e1000_read_eeprom(hw,
989 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
990 eeprom_apme_mask = E1000_EEPROM_82544_APM;
991 break;
992 case e1000_82546:
993 case e1000_82546_rev_3:
994 if (er32(STATUS) & E1000_STATUS_FUNC_1){
995 e1000_read_eeprom(hw,
996 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
997 break;
998 }
999
1000 default:
1001 e1000_read_eeprom(hw,
1002 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
1003 break;
1004 }
1005 if (eeprom_data & eeprom_apme_mask)
1006 adapter->eeprom_wol |= E1000_WUFC_MAG;
1007
1008
1009
1010
1011 switch (pdev->device) {
1012 case E1000_DEV_ID_82546GB_PCIE:
1013 adapter->eeprom_wol = 0;
1014 break;
1015 case E1000_DEV_ID_82546EB_FIBER:
1016 case E1000_DEV_ID_82546GB_FIBER:
1017
1018
1019 if (er32(STATUS) & E1000_STATUS_FUNC_1)
1020 adapter->eeprom_wol = 0;
1021 break;
1022 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1023
1024 if (global_quad_port_a != 0)
1025 adapter->eeprom_wol = 0;
1026 else
1027 adapter->quad_port_a = 1;
1028
1029 if (++global_quad_port_a == 4)
1030 global_quad_port_a = 0;
1031 break;
1032 }
1033
1034
1035 adapter->wol = adapter->eeprom_wol;
1036 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1037
1038
1039 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
1040 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""),
1041 ((hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
1042 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
1043 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
1044 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
1045 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : "32-bit"));
1046
1047 printk("%pM\n", netdev->dev_addr);
1048
1049
1050 e1000_reset(adapter);
1051
1052 strcpy(netdev->name, "eth%d");
1053 err = register_netdev(netdev);
1054 if (err)
1055 goto err_register;
1056
1057
1058 netif_carrier_off(netdev);
1059
1060 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
1061
1062 cards_found++;
1063 return 0;
1064
1065err_register:
1066err_eeprom:
1067 e1000_phy_hw_reset(hw);
1068
1069 if (hw->flash_address)
1070 iounmap(hw->flash_address);
1071 kfree(adapter->tx_ring);
1072 kfree(adapter->rx_ring);
1073err_sw_init:
1074 iounmap(hw->hw_addr);
1075err_ioremap:
1076 free_netdev(netdev);
1077err_alloc_etherdev:
1078 pci_release_selected_regions(pdev, bars);
1079err_pci_reg:
1080err_dma:
1081 pci_disable_device(pdev);
1082 return err;
1083}
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095static void __devexit e1000_remove(struct pci_dev *pdev)
1096{
1097 struct net_device *netdev = pci_get_drvdata(pdev);
1098 struct e1000_adapter *adapter = netdev_priv(netdev);
1099 struct e1000_hw *hw = &adapter->hw;
1100
1101 set_bit(__E1000_DOWN, &adapter->flags);
1102 del_timer_sync(&adapter->tx_fifo_stall_timer);
1103 del_timer_sync(&adapter->watchdog_timer);
1104 del_timer_sync(&adapter->phy_info_timer);
1105
1106 cancel_work_sync(&adapter->reset_task);
1107
1108 e1000_release_manageability(adapter);
1109
1110 unregister_netdev(netdev);
1111
1112 e1000_phy_hw_reset(hw);
1113
1114 kfree(adapter->tx_ring);
1115 kfree(adapter->rx_ring);
1116
1117 iounmap(hw->hw_addr);
1118 if (hw->flash_address)
1119 iounmap(hw->flash_address);
1120 pci_release_selected_regions(pdev, adapter->bars);
1121
1122 free_netdev(netdev);
1123
1124 pci_disable_device(pdev);
1125}
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
1137{
1138 struct e1000_hw *hw = &adapter->hw;
1139 struct net_device *netdev = adapter->netdev;
1140 struct pci_dev *pdev = adapter->pdev;
1141
1142
1143
1144 hw->vendor_id = pdev->vendor;
1145 hw->device_id = pdev->device;
1146 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1147 hw->subsystem_id = pdev->subsystem_device;
1148 hw->revision_id = pdev->revision;
1149
1150 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1151
1152 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1153 hw->max_frame_size = netdev->mtu +
1154 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1155 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1156
1157
1158
1159 if (e1000_set_mac_type(hw)) {
1160 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1161 return -EIO;
1162 }
1163
1164 switch (hw->mac_type) {
1165 default:
1166 break;
1167 case e1000_82541:
1168 case e1000_82547:
1169 case e1000_82541_rev_2:
1170 case e1000_82547_rev_2:
1171 hw->phy_init_script = 1;
1172 break;
1173 }
1174
1175 e1000_set_media_type(hw);
1176
1177 hw->wait_autoneg_complete = false;
1178 hw->tbi_compatibility_en = true;
1179 hw->adaptive_ifs = true;
1180
1181
1182
1183 if (hw->media_type == e1000_media_type_copper) {
1184 hw->mdix = AUTO_ALL_MODES;
1185 hw->disable_polarity_correction = false;
1186 hw->master_slave = E1000_MASTER_SLAVE;
1187 }
1188
1189 adapter->num_tx_queues = 1;
1190 adapter->num_rx_queues = 1;
1191
1192 if (e1000_alloc_queues(adapter)) {
1193 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1194 return -ENOMEM;
1195 }
1196
1197
1198 e1000_irq_disable(adapter);
1199
1200 spin_lock_init(&adapter->stats_lock);
1201
1202 set_bit(__E1000_DOWN, &adapter->flags);
1203
1204 return 0;
1205}
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
1216{
1217 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
1218 sizeof(struct e1000_tx_ring), GFP_KERNEL);
1219 if (!adapter->tx_ring)
1220 return -ENOMEM;
1221
1222 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
1223 sizeof(struct e1000_rx_ring), GFP_KERNEL);
1224 if (!adapter->rx_ring) {
1225 kfree(adapter->tx_ring);
1226 return -ENOMEM;
1227 }
1228
1229 return E1000_SUCCESS;
1230}
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245static int e1000_open(struct net_device *netdev)
1246{
1247 struct e1000_adapter *adapter = netdev_priv(netdev);
1248 struct e1000_hw *hw = &adapter->hw;
1249 int err;
1250
1251
1252 if (test_bit(__E1000_TESTING, &adapter->flags))
1253 return -EBUSY;
1254
1255 netif_carrier_off(netdev);
1256
1257
1258 err = e1000_setup_all_tx_resources(adapter);
1259 if (err)
1260 goto err_setup_tx;
1261
1262
1263 err = e1000_setup_all_rx_resources(adapter);
1264 if (err)
1265 goto err_setup_rx;
1266
1267 e1000_power_up_phy(adapter);
1268
1269 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1270 if ((hw->mng_cookie.status &
1271 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1272 e1000_update_mng_vlan(adapter);
1273 }
1274
1275
1276
1277
1278
1279 e1000_configure(adapter);
1280
1281 err = e1000_request_irq(adapter);
1282 if (err)
1283 goto err_req_irq;
1284
1285
1286 clear_bit(__E1000_DOWN, &adapter->flags);
1287
1288 napi_enable(&adapter->napi);
1289
1290 e1000_irq_enable(adapter);
1291
1292 netif_start_queue(netdev);
1293
1294
1295 ew32(ICS, E1000_ICS_LSC);
1296
1297 return E1000_SUCCESS;
1298
1299err_req_irq:
1300 e1000_power_down_phy(adapter);
1301 e1000_free_all_rx_resources(adapter);
1302err_setup_rx:
1303 e1000_free_all_tx_resources(adapter);
1304err_setup_tx:
1305 e1000_reset(adapter);
1306
1307 return err;
1308}
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322static int e1000_close(struct net_device *netdev)
1323{
1324 struct e1000_adapter *adapter = netdev_priv(netdev);
1325 struct e1000_hw *hw = &adapter->hw;
1326
1327 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1328 e1000_down(adapter);
1329 e1000_power_down_phy(adapter);
1330 e1000_free_irq(adapter);
1331
1332 e1000_free_all_tx_resources(adapter);
1333 e1000_free_all_rx_resources(adapter);
1334
1335
1336
1337 if ((hw->mng_cookie.status &
1338 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1339 !(adapter->vlgrp &&
1340 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
1341 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1342 }
1343
1344 return 0;
1345}
1346
1347
1348
1349
1350
1351
1352
1353static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
1354 unsigned long len)
1355{
1356 struct e1000_hw *hw = &adapter->hw;
1357 unsigned long begin = (unsigned long)start;
1358 unsigned long end = begin + len;
1359
1360
1361
1362 if (hw->mac_type == e1000_82545 ||
1363 hw->mac_type == e1000_82546) {
1364 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
1365 }
1366
1367 return true;
1368}
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
1379 struct e1000_tx_ring *txdr)
1380{
1381 struct pci_dev *pdev = adapter->pdev;
1382 int size;
1383
1384 size = sizeof(struct e1000_buffer) * txdr->count;
1385 txdr->buffer_info = vmalloc(size);
1386 if (!txdr->buffer_info) {
1387 DPRINTK(PROBE, ERR,
1388 "Unable to allocate memory for the transmit descriptor ring\n");
1389 return -ENOMEM;
1390 }
1391 memset(txdr->buffer_info, 0, size);
1392
1393
1394
1395 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1396 txdr->size = ALIGN(txdr->size, 4096);
1397
1398 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1399 if (!txdr->desc) {
1400setup_tx_desc_die:
1401 vfree(txdr->buffer_info);
1402 DPRINTK(PROBE, ERR,
1403 "Unable to allocate memory for the transmit descriptor ring\n");
1404 return -ENOMEM;
1405 }
1406
1407
1408 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1409 void *olddesc = txdr->desc;
1410 dma_addr_t olddma = txdr->dma;
1411 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1412 "at %p\n", txdr->size, txdr->desc);
1413
1414 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1415
1416 if (!txdr->desc) {
1417 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1418 goto setup_tx_desc_die;
1419 }
1420
1421 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1422
1423 pci_free_consistent(pdev, txdr->size, txdr->desc,
1424 txdr->dma);
1425 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1426 DPRINTK(PROBE, ERR,
1427 "Unable to allocate aligned memory "
1428 "for the transmit descriptor ring\n");
1429 vfree(txdr->buffer_info);
1430 return -ENOMEM;
1431 } else {
1432
1433 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1434 }
1435 }
1436 memset(txdr->desc, 0, txdr->size);
1437
1438 txdr->next_to_use = 0;
1439 txdr->next_to_clean = 0;
1440
1441 return 0;
1442}
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1453{
1454 int i, err = 0;
1455
1456 for (i = 0; i < adapter->num_tx_queues; i++) {
1457 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1458 if (err) {
1459 DPRINTK(PROBE, ERR,
1460 "Allocation for Tx Queue %u failed\n", i);
1461 for (i-- ; i >= 0; i--)
1462 e1000_free_tx_resources(adapter,
1463 &adapter->tx_ring[i]);
1464 break;
1465 }
1466 }
1467
1468 return err;
1469}
1470
1471
1472
1473
1474
1475
1476
1477
1478static void e1000_configure_tx(struct e1000_adapter *adapter)
1479{
1480 u64 tdba;
1481 struct e1000_hw *hw = &adapter->hw;
1482 u32 tdlen, tctl, tipg;
1483 u32 ipgr1, ipgr2;
1484
1485
1486
1487 switch (adapter->num_tx_queues) {
1488 case 1:
1489 default:
1490 tdba = adapter->tx_ring[0].dma;
1491 tdlen = adapter->tx_ring[0].count *
1492 sizeof(struct e1000_tx_desc);
1493 ew32(TDLEN, tdlen);
1494 ew32(TDBAH, (tdba >> 32));
1495 ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
1496 ew32(TDT, 0);
1497 ew32(TDH, 0);
1498 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
1499 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
1500 break;
1501 }
1502
1503
1504 if ((hw->media_type == e1000_media_type_fiber ||
1505 hw->media_type == e1000_media_type_internal_serdes))
1506 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1507 else
1508 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1509
1510 switch (hw->mac_type) {
1511 case e1000_82542_rev2_0:
1512 case e1000_82542_rev2_1:
1513 tipg = DEFAULT_82542_TIPG_IPGT;
1514 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1515 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1516 break;
1517 default:
1518 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1519 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1520 break;
1521 }
1522 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1523 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1524 ew32(TIPG, tipg);
1525
1526
1527
1528 ew32(TIDV, adapter->tx_int_delay);
1529 if (hw->mac_type >= e1000_82540)
1530 ew32(TADV, adapter->tx_abs_int_delay);
1531
1532
1533
1534 tctl = er32(TCTL);
1535 tctl &= ~E1000_TCTL_CT;
1536 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1537 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1538
1539 e1000_config_collision_dist(hw);
1540
1541
1542 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1543
1544
1545 if (adapter->tx_int_delay)
1546 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1547
1548 if (hw->mac_type < e1000_82543)
1549 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1550 else
1551 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1552
1553
1554
1555 if (hw->mac_type == e1000_82544 &&
1556 hw->bus_type == e1000_bus_type_pcix)
1557 adapter->pcix_82544 = 1;
1558
1559 ew32(TCTL, tctl);
1560
1561}
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
1572 struct e1000_rx_ring *rxdr)
1573{
1574 struct pci_dev *pdev = adapter->pdev;
1575 int size, desc_len;
1576
1577 size = sizeof(struct e1000_buffer) * rxdr->count;
1578 rxdr->buffer_info = vmalloc(size);
1579 if (!rxdr->buffer_info) {
1580 DPRINTK(PROBE, ERR,
1581 "Unable to allocate memory for the receive descriptor ring\n");
1582 return -ENOMEM;
1583 }
1584 memset(rxdr->buffer_info, 0, size);
1585
1586 desc_len = sizeof(struct e1000_rx_desc);
1587
1588
1589
1590 rxdr->size = rxdr->count * desc_len;
1591 rxdr->size = ALIGN(rxdr->size, 4096);
1592
1593 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1594
1595 if (!rxdr->desc) {
1596 DPRINTK(PROBE, ERR,
1597 "Unable to allocate memory for the receive descriptor ring\n");
1598setup_rx_desc_die:
1599 vfree(rxdr->buffer_info);
1600 return -ENOMEM;
1601 }
1602
1603
1604 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1605 void *olddesc = rxdr->desc;
1606 dma_addr_t olddma = rxdr->dma;
1607 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1608 "at %p\n", rxdr->size, rxdr->desc);
1609
1610 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1611
1612 if (!rxdr->desc) {
1613 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1614 DPRINTK(PROBE, ERR,
1615 "Unable to allocate memory "
1616 "for the receive descriptor ring\n");
1617 goto setup_rx_desc_die;
1618 }
1619
1620 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1621
1622 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1623 rxdr->dma);
1624 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1625 DPRINTK(PROBE, ERR,
1626 "Unable to allocate aligned memory "
1627 "for the receive descriptor ring\n");
1628 goto setup_rx_desc_die;
1629 } else {
1630
1631 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1632 }
1633 }
1634 memset(rxdr->desc, 0, rxdr->size);
1635
1636 rxdr->next_to_clean = 0;
1637 rxdr->next_to_use = 0;
1638 rxdr->rx_skb_top = NULL;
1639
1640 return 0;
1641}
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1652{
1653 int i, err = 0;
1654
1655 for (i = 0; i < adapter->num_rx_queues; i++) {
1656 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1657 if (err) {
1658 DPRINTK(PROBE, ERR,
1659 "Allocation for Rx Queue %u failed\n", i);
1660 for (i-- ; i >= 0; i--)
1661 e1000_free_rx_resources(adapter,
1662 &adapter->rx_ring[i]);
1663 break;
1664 }
1665 }
1666
1667 return err;
1668}
1669
1670
1671
1672
1673
1674static void e1000_setup_rctl(struct e1000_adapter *adapter)
1675{
1676 struct e1000_hw *hw = &adapter->hw;
1677 u32 rctl;
1678
1679 rctl = er32(RCTL);
1680
1681 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1682
1683 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1684 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1685 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
1686
1687 if (hw->tbi_compatibility_on == 1)
1688 rctl |= E1000_RCTL_SBP;
1689 else
1690 rctl &= ~E1000_RCTL_SBP;
1691
1692 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1693 rctl &= ~E1000_RCTL_LPE;
1694 else
1695 rctl |= E1000_RCTL_LPE;
1696
1697
1698 rctl &= ~E1000_RCTL_SZ_4096;
1699 rctl |= E1000_RCTL_BSEX;
1700 switch (adapter->rx_buffer_len) {
1701 case E1000_RXBUFFER_256:
1702 rctl |= E1000_RCTL_SZ_256;
1703 rctl &= ~E1000_RCTL_BSEX;
1704 break;
1705 case E1000_RXBUFFER_512:
1706 rctl |= E1000_RCTL_SZ_512;
1707 rctl &= ~E1000_RCTL_BSEX;
1708 break;
1709 case E1000_RXBUFFER_1024:
1710 rctl |= E1000_RCTL_SZ_1024;
1711 rctl &= ~E1000_RCTL_BSEX;
1712 break;
1713 case E1000_RXBUFFER_2048:
1714 default:
1715 rctl |= E1000_RCTL_SZ_2048;
1716 rctl &= ~E1000_RCTL_BSEX;
1717 break;
1718 case E1000_RXBUFFER_4096:
1719 rctl |= E1000_RCTL_SZ_4096;
1720 break;
1721 case E1000_RXBUFFER_8192:
1722 rctl |= E1000_RCTL_SZ_8192;
1723 break;
1724 case E1000_RXBUFFER_16384:
1725 rctl |= E1000_RCTL_SZ_16384;
1726 break;
1727 }
1728
1729 ew32(RCTL, rctl);
1730}
1731
1732
1733
1734
1735
1736
1737
1738
1739static void e1000_configure_rx(struct e1000_adapter *adapter)
1740{
1741 u64 rdba;
1742 struct e1000_hw *hw = &adapter->hw;
1743 u32 rdlen, rctl, rxcsum;
1744
1745 if (adapter->netdev->mtu > ETH_DATA_LEN) {
1746 rdlen = adapter->rx_ring[0].count *
1747 sizeof(struct e1000_rx_desc);
1748 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
1749 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
1750 } else {
1751 rdlen = adapter->rx_ring[0].count *
1752 sizeof(struct e1000_rx_desc);
1753 adapter->clean_rx = e1000_clean_rx_irq;
1754 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1755 }
1756
1757
1758 rctl = er32(RCTL);
1759 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1760
1761
1762 ew32(RDTR, adapter->rx_int_delay);
1763
1764 if (hw->mac_type >= e1000_82540) {
1765 ew32(RADV, adapter->rx_abs_int_delay);
1766 if (adapter->itr_setting != 0)
1767 ew32(ITR, 1000000000 / (adapter->itr * 256));
1768 }
1769
1770
1771
1772 switch (adapter->num_rx_queues) {
1773 case 1:
1774 default:
1775 rdba = adapter->rx_ring[0].dma;
1776 ew32(RDLEN, rdlen);
1777 ew32(RDBAH, (rdba >> 32));
1778 ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
1779 ew32(RDT, 0);
1780 ew32(RDH, 0);
1781 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
1782 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
1783 break;
1784 }
1785
1786
1787 if (hw->mac_type >= e1000_82543) {
1788 rxcsum = er32(RXCSUM);
1789 if (adapter->rx_csum)
1790 rxcsum |= E1000_RXCSUM_TUOFL;
1791 else
1792
1793 rxcsum &= ~E1000_RXCSUM_TUOFL;
1794 ew32(RXCSUM, rxcsum);
1795 }
1796
1797
1798 ew32(RCTL, rctl);
1799}
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809static void e1000_free_tx_resources(struct e1000_adapter *adapter,
1810 struct e1000_tx_ring *tx_ring)
1811{
1812 struct pci_dev *pdev = adapter->pdev;
1813
1814 e1000_clean_tx_ring(adapter, tx_ring);
1815
1816 vfree(tx_ring->buffer_info);
1817 tx_ring->buffer_info = NULL;
1818
1819 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1820
1821 tx_ring->desc = NULL;
1822}
1823
1824
1825
1826
1827
1828
1829
1830
1831void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
1832{
1833 int i;
1834
1835 for (i = 0; i < adapter->num_tx_queues; i++)
1836 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1837}
1838
1839static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1840 struct e1000_buffer *buffer_info)
1841{
1842 buffer_info->dma = 0;
1843 if (buffer_info->skb) {
1844 skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
1845 DMA_TO_DEVICE);
1846 dev_kfree_skb_any(buffer_info->skb);
1847 buffer_info->skb = NULL;
1848 }
1849 buffer_info->time_stamp = 0;
1850
1851}
1852
1853
1854
1855
1856
1857
1858
1859static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
1860 struct e1000_tx_ring *tx_ring)
1861{
1862 struct e1000_hw *hw = &adapter->hw;
1863 struct e1000_buffer *buffer_info;
1864 unsigned long size;
1865 unsigned int i;
1866
1867
1868
1869 for (i = 0; i < tx_ring->count; i++) {
1870 buffer_info = &tx_ring->buffer_info[i];
1871 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
1872 }
1873
1874 size = sizeof(struct e1000_buffer) * tx_ring->count;
1875 memset(tx_ring->buffer_info, 0, size);
1876
1877
1878
1879 memset(tx_ring->desc, 0, tx_ring->size);
1880
1881 tx_ring->next_to_use = 0;
1882 tx_ring->next_to_clean = 0;
1883 tx_ring->last_tx_tso = 0;
1884
1885 writel(0, hw->hw_addr + tx_ring->tdh);
1886 writel(0, hw->hw_addr + tx_ring->tdt);
1887}
1888
1889
1890
1891
1892
1893
1894static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
1895{
1896 int i;
1897
1898 for (i = 0; i < adapter->num_tx_queues; i++)
1899 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1900}
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910static void e1000_free_rx_resources(struct e1000_adapter *adapter,
1911 struct e1000_rx_ring *rx_ring)
1912{
1913 struct pci_dev *pdev = adapter->pdev;
1914
1915 e1000_clean_rx_ring(adapter, rx_ring);
1916
1917 vfree(rx_ring->buffer_info);
1918 rx_ring->buffer_info = NULL;
1919
1920 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1921
1922 rx_ring->desc = NULL;
1923}
1924
1925
1926
1927
1928
1929
1930
1931
1932void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
1933{
1934 int i;
1935
1936 for (i = 0; i < adapter->num_rx_queues; i++)
1937 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
1938}
1939
1940
1941
1942
1943
1944
1945
1946static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
1947 struct e1000_rx_ring *rx_ring)
1948{
1949 struct e1000_hw *hw = &adapter->hw;
1950 struct e1000_buffer *buffer_info;
1951 struct pci_dev *pdev = adapter->pdev;
1952 unsigned long size;
1953 unsigned int i;
1954
1955
1956 for (i = 0; i < rx_ring->count; i++) {
1957 buffer_info = &rx_ring->buffer_info[i];
1958 if (buffer_info->dma &&
1959 adapter->clean_rx == e1000_clean_rx_irq) {
1960 pci_unmap_single(pdev, buffer_info->dma,
1961 buffer_info->length,
1962 PCI_DMA_FROMDEVICE);
1963 } else if (buffer_info->dma &&
1964 adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
1965 pci_unmap_page(pdev, buffer_info->dma,
1966 buffer_info->length,
1967 PCI_DMA_FROMDEVICE);
1968 }
1969
1970 buffer_info->dma = 0;
1971 if (buffer_info->page) {
1972 put_page(buffer_info->page);
1973 buffer_info->page = NULL;
1974 }
1975 if (buffer_info->skb) {
1976 dev_kfree_skb(buffer_info->skb);
1977 buffer_info->skb = NULL;
1978 }
1979 }
1980
1981
1982 if (rx_ring->rx_skb_top) {
1983 dev_kfree_skb(rx_ring->rx_skb_top);
1984 rx_ring->rx_skb_top = NULL;
1985 }
1986
1987 size = sizeof(struct e1000_buffer) * rx_ring->count;
1988 memset(rx_ring->buffer_info, 0, size);
1989
1990
1991 memset(rx_ring->desc, 0, rx_ring->size);
1992
1993 rx_ring->next_to_clean = 0;
1994 rx_ring->next_to_use = 0;
1995
1996 writel(0, hw->hw_addr + rx_ring->rdh);
1997 writel(0, hw->hw_addr + rx_ring->rdt);
1998}
1999
2000
2001
2002
2003
2004
2005static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2006{
2007 int i;
2008
2009 for (i = 0; i < adapter->num_rx_queues; i++)
2010 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2011}
2012
2013
2014
2015
2016static void e1000_enter_82542_rst(struct e1000_adapter *adapter)
2017{
2018 struct e1000_hw *hw = &adapter->hw;
2019 struct net_device *netdev = adapter->netdev;
2020 u32 rctl;
2021
2022 e1000_pci_clear_mwi(hw);
2023
2024 rctl = er32(RCTL);
2025 rctl |= E1000_RCTL_RST;
2026 ew32(RCTL, rctl);
2027 E1000_WRITE_FLUSH();
2028 mdelay(5);
2029
2030 if (netif_running(netdev))
2031 e1000_clean_all_rx_rings(adapter);
2032}
2033
2034static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
2035{
2036 struct e1000_hw *hw = &adapter->hw;
2037 struct net_device *netdev = adapter->netdev;
2038 u32 rctl;
2039
2040 rctl = er32(RCTL);
2041 rctl &= ~E1000_RCTL_RST;
2042 ew32(RCTL, rctl);
2043 E1000_WRITE_FLUSH();
2044 mdelay(5);
2045
2046 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
2047 e1000_pci_set_mwi(hw);
2048
2049 if (netif_running(netdev)) {
2050
2051 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2052 e1000_configure_rx(adapter);
2053 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2054 }
2055}
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065static int e1000_set_mac(struct net_device *netdev, void *p)
2066{
2067 struct e1000_adapter *adapter = netdev_priv(netdev);
2068 struct e1000_hw *hw = &adapter->hw;
2069 struct sockaddr *addr = p;
2070
2071 if (!is_valid_ether_addr(addr->sa_data))
2072 return -EADDRNOTAVAIL;
2073
2074
2075
2076 if (hw->mac_type == e1000_82542_rev2_0)
2077 e1000_enter_82542_rst(adapter);
2078
2079 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2080 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
2081
2082 e1000_rar_set(hw, hw->mac_addr, 0);
2083
2084 if (hw->mac_type == e1000_82542_rev2_0)
2085 e1000_leave_82542_rst(adapter);
2086
2087 return 0;
2088}
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100static void e1000_set_rx_mode(struct net_device *netdev)
2101{
2102 struct e1000_adapter *adapter = netdev_priv(netdev);
2103 struct e1000_hw *hw = &adapter->hw;
2104 struct netdev_hw_addr *ha;
2105 bool use_uc = false;
2106 struct dev_addr_list *mc_ptr;
2107 u32 rctl;
2108 u32 hash_value;
2109 int i, rar_entries = E1000_RAR_ENTRIES;
2110 int mta_reg_count = E1000_NUM_MTA_REGISTERS;
2111 u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC);
2112
2113 if (!mcarray) {
2114 DPRINTK(PROBE, ERR, "memory allocation failed\n");
2115 return;
2116 }
2117
2118
2119
2120 rctl = er32(RCTL);
2121
2122 if (netdev->flags & IFF_PROMISC) {
2123 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2124 rctl &= ~E1000_RCTL_VFE;
2125 } else {
2126 if (netdev->flags & IFF_ALLMULTI)
2127 rctl |= E1000_RCTL_MPE;
2128 else
2129 rctl &= ~E1000_RCTL_MPE;
2130
2131 if (adapter->vlgrp)
2132 rctl |= E1000_RCTL_VFE;
2133 }
2134
2135 if (netdev->uc.count > rar_entries - 1) {
2136 rctl |= E1000_RCTL_UPE;
2137 } else if (!(netdev->flags & IFF_PROMISC)) {
2138 rctl &= ~E1000_RCTL_UPE;
2139 use_uc = true;
2140 }
2141
2142 ew32(RCTL, rctl);
2143
2144
2145
2146 if (hw->mac_type == e1000_82542_rev2_0)
2147 e1000_enter_82542_rst(adapter);
2148
2149
2150
2151
2152
2153
2154
2155
2156 i = 1;
2157 if (use_uc)
2158 list_for_each_entry(ha, &netdev->uc.list, list) {
2159 if (i == rar_entries)
2160 break;
2161 e1000_rar_set(hw, ha->addr, i++);
2162 }
2163
2164 WARN_ON(i == rar_entries);
2165
2166 mc_ptr = netdev->mc_list;
2167
2168 for (; i < rar_entries; i++) {
2169 if (mc_ptr) {
2170 e1000_rar_set(hw, mc_ptr->da_addr, i);
2171 mc_ptr = mc_ptr->next;
2172 } else {
2173 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2174 E1000_WRITE_FLUSH();
2175 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2176 E1000_WRITE_FLUSH();
2177 }
2178 }
2179
2180
2181
2182 for (; mc_ptr; mc_ptr = mc_ptr->next) {
2183 u32 hash_reg, hash_bit, mta;
2184 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr);
2185 hash_reg = (hash_value >> 5) & 0x7F;
2186 hash_bit = hash_value & 0x1F;
2187 mta = (1 << hash_bit);
2188 mcarray[hash_reg] |= mta;
2189 }
2190
2191
2192
2193 for (i = mta_reg_count - 1; i >= 0 ; i--) {
2194
2195
2196
2197
2198
2199
2200 E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]);
2201 }
2202 E1000_WRITE_FLUSH();
2203
2204 if (hw->mac_type == e1000_82542_rev2_0)
2205 e1000_leave_82542_rst(adapter);
2206
2207 kfree(mcarray);
2208}
2209
2210
2211
2212
2213static void e1000_update_phy_info(unsigned long data)
2214{
2215 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2216 struct e1000_hw *hw = &adapter->hw;
2217 e1000_phy_get_info(hw, &adapter->phy_info);
2218}
2219
2220
2221
2222
2223
2224
2225static void e1000_82547_tx_fifo_stall(unsigned long data)
2226{
2227 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2228 struct e1000_hw *hw = &adapter->hw;
2229 struct net_device *netdev = adapter->netdev;
2230 u32 tctl;
2231
2232 if (atomic_read(&adapter->tx_fifo_stall)) {
2233 if ((er32(TDT) == er32(TDH)) &&
2234 (er32(TDFT) == er32(TDFH)) &&
2235 (er32(TDFTS) == er32(TDFHS))) {
2236 tctl = er32(TCTL);
2237 ew32(TCTL, tctl & ~E1000_TCTL_EN);
2238 ew32(TDFT, adapter->tx_head_addr);
2239 ew32(TDFH, adapter->tx_head_addr);
2240 ew32(TDFTS, adapter->tx_head_addr);
2241 ew32(TDFHS, adapter->tx_head_addr);
2242 ew32(TCTL, tctl);
2243 E1000_WRITE_FLUSH();
2244
2245 adapter->tx_fifo_head = 0;
2246 atomic_set(&adapter->tx_fifo_stall, 0);
2247 netif_wake_queue(netdev);
2248 } else if (!test_bit(__E1000_DOWN, &adapter->flags)) {
2249 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2250 }
2251 }
2252}
2253
2254static bool e1000_has_link(struct e1000_adapter *adapter)
2255{
2256 struct e1000_hw *hw = &adapter->hw;
2257 bool link_active = false;
2258
2259
2260
2261
2262
2263
2264 switch (hw->media_type) {
2265 case e1000_media_type_copper:
2266 if (hw->get_link_status) {
2267 e1000_check_for_link(hw);
2268 link_active = !hw->get_link_status;
2269 } else {
2270 link_active = true;
2271 }
2272 break;
2273 case e1000_media_type_fiber:
2274 e1000_check_for_link(hw);
2275 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
2276 break;
2277 case e1000_media_type_internal_serdes:
2278 e1000_check_for_link(hw);
2279 link_active = hw->serdes_has_link;
2280 break;
2281 default:
2282 break;
2283 }
2284
2285 return link_active;
2286}
2287
2288
2289
2290
2291
2292static void e1000_watchdog(unsigned long data)
2293{
2294 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2295 struct e1000_hw *hw = &adapter->hw;
2296 struct net_device *netdev = adapter->netdev;
2297 struct e1000_tx_ring *txdr = adapter->tx_ring;
2298 u32 link, tctl;
2299
2300 link = e1000_has_link(adapter);
2301 if ((netif_carrier_ok(netdev)) && link)
2302 goto link_up;
2303
2304 if (link) {
2305 if (!netif_carrier_ok(netdev)) {
2306 u32 ctrl;
2307 bool txb2b = true;
2308
2309 e1000_get_speed_and_duplex(hw,
2310 &adapter->link_speed,
2311 &adapter->link_duplex);
2312
2313 ctrl = er32(CTRL);
2314 printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, "
2315 "Flow Control: %s\n",
2316 netdev->name,
2317 adapter->link_speed,
2318 adapter->link_duplex == FULL_DUPLEX ?
2319 "Full Duplex" : "Half Duplex",
2320 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
2321 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
2322 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
2323 E1000_CTRL_TFCE) ? "TX" : "None" )));
2324
2325
2326
2327 netdev->tx_queue_len = adapter->tx_queue_len;
2328 adapter->tx_timeout_factor = 1;
2329 switch (adapter->link_speed) {
2330 case SPEED_10:
2331 txb2b = false;
2332 netdev->tx_queue_len = 10;
2333 adapter->tx_timeout_factor = 16;
2334 break;
2335 case SPEED_100:
2336 txb2b = false;
2337 netdev->tx_queue_len = 100;
2338
2339 break;
2340 }
2341
2342
2343 tctl = er32(TCTL);
2344 tctl |= E1000_TCTL_EN;
2345 ew32(TCTL, tctl);
2346
2347 netif_carrier_on(netdev);
2348 if (!test_bit(__E1000_DOWN, &adapter->flags))
2349 mod_timer(&adapter->phy_info_timer,
2350 round_jiffies(jiffies + 2 * HZ));
2351 adapter->smartspeed = 0;
2352 }
2353 } else {
2354 if (netif_carrier_ok(netdev)) {
2355 adapter->link_speed = 0;
2356 adapter->link_duplex = 0;
2357 printk(KERN_INFO "e1000: %s NIC Link is Down\n",
2358 netdev->name);
2359 netif_carrier_off(netdev);
2360
2361 if (!test_bit(__E1000_DOWN, &adapter->flags))
2362 mod_timer(&adapter->phy_info_timer,
2363 round_jiffies(jiffies + 2 * HZ));
2364 }
2365
2366 e1000_smartspeed(adapter);
2367 }
2368
2369link_up:
2370 e1000_update_stats(adapter);
2371
2372 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2373 adapter->tpt_old = adapter->stats.tpt;
2374 hw->collision_delta = adapter->stats.colc - adapter->colc_old;
2375 adapter->colc_old = adapter->stats.colc;
2376
2377 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2378 adapter->gorcl_old = adapter->stats.gorcl;
2379 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2380 adapter->gotcl_old = adapter->stats.gotcl;
2381
2382 e1000_update_adaptive(hw);
2383
2384 if (!netif_carrier_ok(netdev)) {
2385 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2386
2387
2388
2389
2390 adapter->tx_timeout_count++;
2391 schedule_work(&adapter->reset_task);
2392
2393 return;
2394 }
2395 }
2396
2397
2398 ew32(ICS, E1000_ICS_RXDMT0);
2399
2400
2401 adapter->detect_tx_hung = true;
2402
2403
2404 if (!test_bit(__E1000_DOWN, &adapter->flags))
2405 mod_timer(&adapter->watchdog_timer,
2406 round_jiffies(jiffies + 2 * HZ));
2407}
2408
2409enum latency_range {
2410 lowest_latency = 0,
2411 low_latency = 1,
2412 bulk_latency = 2,
2413 latency_invalid = 255
2414};
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2434 u16 itr_setting, int packets, int bytes)
2435{
2436 unsigned int retval = itr_setting;
2437 struct e1000_hw *hw = &adapter->hw;
2438
2439 if (unlikely(hw->mac_type < e1000_82540))
2440 goto update_itr_done;
2441
2442 if (packets == 0)
2443 goto update_itr_done;
2444
2445 switch (itr_setting) {
2446 case lowest_latency:
2447
2448 if (bytes/packets > 8000)
2449 retval = bulk_latency;
2450 else if ((packets < 5) && (bytes > 512))
2451 retval = low_latency;
2452 break;
2453 case low_latency:
2454 if (bytes > 10000) {
2455
2456 if (bytes/packets > 8000)
2457 retval = bulk_latency;
2458 else if ((packets < 10) || ((bytes/packets) > 1200))
2459 retval = bulk_latency;
2460 else if ((packets > 35))
2461 retval = lowest_latency;
2462 } else if (bytes/packets > 2000)
2463 retval = bulk_latency;
2464 else if (packets <= 2 && bytes < 512)
2465 retval = lowest_latency;
2466 break;
2467 case bulk_latency:
2468 if (bytes > 25000) {
2469 if (packets > 35)
2470 retval = low_latency;
2471 } else if (bytes < 6000) {
2472 retval = low_latency;
2473 }
2474 break;
2475 }
2476
2477update_itr_done:
2478 return retval;
2479}
2480
2481static void e1000_set_itr(struct e1000_adapter *adapter)
2482{
2483 struct e1000_hw *hw = &adapter->hw;
2484 u16 current_itr;
2485 u32 new_itr = adapter->itr;
2486
2487 if (unlikely(hw->mac_type < e1000_82540))
2488 return;
2489
2490
2491 if (unlikely(adapter->link_speed != SPEED_1000)) {
2492 current_itr = 0;
2493 new_itr = 4000;
2494 goto set_itr_now;
2495 }
2496
2497 adapter->tx_itr = e1000_update_itr(adapter,
2498 adapter->tx_itr,
2499 adapter->total_tx_packets,
2500 adapter->total_tx_bytes);
2501
2502 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2503 adapter->tx_itr = low_latency;
2504
2505 adapter->rx_itr = e1000_update_itr(adapter,
2506 adapter->rx_itr,
2507 adapter->total_rx_packets,
2508 adapter->total_rx_bytes);
2509
2510 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2511 adapter->rx_itr = low_latency;
2512
2513 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2514
2515 switch (current_itr) {
2516
2517 case lowest_latency:
2518 new_itr = 70000;
2519 break;
2520 case low_latency:
2521 new_itr = 20000;
2522 break;
2523 case bulk_latency:
2524 new_itr = 4000;
2525 break;
2526 default:
2527 break;
2528 }
2529
2530set_itr_now:
2531 if (new_itr != adapter->itr) {
2532
2533
2534
2535 new_itr = new_itr > adapter->itr ?
2536 min(adapter->itr + (new_itr >> 2), new_itr) :
2537 new_itr;
2538 adapter->itr = new_itr;
2539 ew32(ITR, 1000000000 / (new_itr * 256));
2540 }
2541
2542 return;
2543}
2544
2545#define E1000_TX_FLAGS_CSUM 0x00000001
2546#define E1000_TX_FLAGS_VLAN 0x00000002
2547#define E1000_TX_FLAGS_TSO 0x00000004
2548#define E1000_TX_FLAGS_IPV4 0x00000008
2549#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2550#define E1000_TX_FLAGS_VLAN_SHIFT 16
2551
2552static int e1000_tso(struct e1000_adapter *adapter,
2553 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
2554{
2555 struct e1000_context_desc *context_desc;
2556 struct e1000_buffer *buffer_info;
2557 unsigned int i;
2558 u32 cmd_length = 0;
2559 u16 ipcse = 0, tucse, mss;
2560 u8 ipcss, ipcso, tucss, tucso, hdr_len;
2561 int err;
2562
2563 if (skb_is_gso(skb)) {
2564 if (skb_header_cloned(skb)) {
2565 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2566 if (err)
2567 return err;
2568 }
2569
2570 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2571 mss = skb_shinfo(skb)->gso_size;
2572 if (skb->protocol == htons(ETH_P_IP)) {
2573 struct iphdr *iph = ip_hdr(skb);
2574 iph->tot_len = 0;
2575 iph->check = 0;
2576 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2577 iph->daddr, 0,
2578 IPPROTO_TCP,
2579 0);
2580 cmd_length = E1000_TXD_CMD_IP;
2581 ipcse = skb_transport_offset(skb) - 1;
2582 } else if (skb->protocol == htons(ETH_P_IPV6)) {
2583 ipv6_hdr(skb)->payload_len = 0;
2584 tcp_hdr(skb)->check =
2585 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2586 &ipv6_hdr(skb)->daddr,
2587 0, IPPROTO_TCP, 0);
2588 ipcse = 0;
2589 }
2590 ipcss = skb_network_offset(skb);
2591 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
2592 tucss = skb_transport_offset(skb);
2593 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
2594 tucse = 0;
2595
2596 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2597 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2598
2599 i = tx_ring->next_to_use;
2600 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2601 buffer_info = &tx_ring->buffer_info[i];
2602
2603 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2604 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2605 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2606 context_desc->upper_setup.tcp_fields.tucss = tucss;
2607 context_desc->upper_setup.tcp_fields.tucso = tucso;
2608 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2609 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2610 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2611 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2612
2613 buffer_info->time_stamp = jiffies;
2614 buffer_info->next_to_watch = i;
2615
2616 if (++i == tx_ring->count) i = 0;
2617 tx_ring->next_to_use = i;
2618
2619 return true;
2620 }
2621 return false;
2622}
2623
2624static bool e1000_tx_csum(struct e1000_adapter *adapter,
2625 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
2626{
2627 struct e1000_context_desc *context_desc;
2628 struct e1000_buffer *buffer_info;
2629 unsigned int i;
2630 u8 css;
2631 u32 cmd_len = E1000_TXD_CMD_DEXT;
2632
2633 if (skb->ip_summed != CHECKSUM_PARTIAL)
2634 return false;
2635
2636 switch (skb->protocol) {
2637 case cpu_to_be16(ETH_P_IP):
2638 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2639 cmd_len |= E1000_TXD_CMD_TCP;
2640 break;
2641 case cpu_to_be16(ETH_P_IPV6):
2642
2643 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2644 cmd_len |= E1000_TXD_CMD_TCP;
2645 break;
2646 default:
2647 if (unlikely(net_ratelimit()))
2648 DPRINTK(DRV, WARNING,
2649 "checksum_partial proto=%x!\n", skb->protocol);
2650 break;
2651 }
2652
2653 css = skb_transport_offset(skb);
2654
2655 i = tx_ring->next_to_use;
2656 buffer_info = &tx_ring->buffer_info[i];
2657 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2658
2659 context_desc->lower_setup.ip_config = 0;
2660 context_desc->upper_setup.tcp_fields.tucss = css;
2661 context_desc->upper_setup.tcp_fields.tucso =
2662 css + skb->csum_offset;
2663 context_desc->upper_setup.tcp_fields.tucse = 0;
2664 context_desc->tcp_seg_setup.data = 0;
2665 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
2666
2667 buffer_info->time_stamp = jiffies;
2668 buffer_info->next_to_watch = i;
2669
2670 if (unlikely(++i == tx_ring->count)) i = 0;
2671 tx_ring->next_to_use = i;
2672
2673 return true;
2674}
2675
2676#define E1000_MAX_TXD_PWR 12
2677#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2678
2679static int e1000_tx_map(struct e1000_adapter *adapter,
2680 struct e1000_tx_ring *tx_ring,
2681 struct sk_buff *skb, unsigned int first,
2682 unsigned int max_per_txd, unsigned int nr_frags,
2683 unsigned int mss)
2684{
2685 struct e1000_hw *hw = &adapter->hw;
2686 struct e1000_buffer *buffer_info;
2687 unsigned int len = skb_headlen(skb);
2688 unsigned int offset, size, count = 0, i;
2689 unsigned int f;
2690 dma_addr_t *map;
2691
2692 i = tx_ring->next_to_use;
2693
2694 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
2695 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
2696 return 0;
2697 }
2698
2699 map = skb_shinfo(skb)->dma_maps;
2700 offset = 0;
2701
2702 while (len) {
2703 buffer_info = &tx_ring->buffer_info[i];
2704 size = min(len, max_per_txd);
2705
2706
2707
2708
2709 if (!skb->data_len && tx_ring->last_tx_tso &&
2710 !skb_is_gso(skb)) {
2711 tx_ring->last_tx_tso = 0;
2712 size -= 4;
2713 }
2714
2715
2716
2717 if (unlikely(mss && !nr_frags && size == len && size > 8))
2718 size -= 4;
2719
2720
2721
2722
2723
2724 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
2725 (size > 2015) && count == 0))
2726 size = 2015;
2727
2728
2729
2730 if (unlikely(adapter->pcix_82544 &&
2731 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2732 size > 4))
2733 size -= 4;
2734
2735 buffer_info->length = size;
2736
2737 buffer_info->time_stamp = jiffies;
2738 buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
2739 buffer_info->next_to_watch = i;
2740
2741 len -= size;
2742 offset += size;
2743 count++;
2744 if (len) {
2745 i++;
2746 if (unlikely(i == tx_ring->count))
2747 i = 0;
2748 }
2749 }
2750
2751 for (f = 0; f < nr_frags; f++) {
2752 struct skb_frag_struct *frag;
2753
2754 frag = &skb_shinfo(skb)->frags[f];
2755 len = frag->size;
2756 offset = 0;
2757
2758 while (len) {
2759 i++;
2760 if (unlikely(i == tx_ring->count))
2761 i = 0;
2762
2763 buffer_info = &tx_ring->buffer_info[i];
2764 size = min(len, max_per_txd);
2765
2766
2767 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
2768 size -= 4;
2769
2770
2771
2772 if (unlikely(adapter->pcix_82544 &&
2773 !((unsigned long)(page_to_phys(frag->page) + offset
2774 + size - 1) & 4) &&
2775 size > 4))
2776 size -= 4;
2777
2778 buffer_info->length = size;
2779 buffer_info->time_stamp = jiffies;
2780 buffer_info->dma = map[f] + offset;
2781 buffer_info->next_to_watch = i;
2782
2783 len -= size;
2784 offset += size;
2785 count++;
2786 }
2787 }
2788
2789 tx_ring->buffer_info[i].skb = skb;
2790 tx_ring->buffer_info[first].next_to_watch = i;
2791
2792 return count;
2793}
2794
2795static void e1000_tx_queue(struct e1000_adapter *adapter,
2796 struct e1000_tx_ring *tx_ring, int tx_flags,
2797 int count)
2798{
2799 struct e1000_hw *hw = &adapter->hw;
2800 struct e1000_tx_desc *tx_desc = NULL;
2801 struct e1000_buffer *buffer_info;
2802 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2803 unsigned int i;
2804
2805 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2806 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2807 E1000_TXD_CMD_TSE;
2808 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2809
2810 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2811 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2812 }
2813
2814 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2815 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2816 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2817 }
2818
2819 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
2820 txd_lower |= E1000_TXD_CMD_VLE;
2821 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
2822 }
2823
2824 i = tx_ring->next_to_use;
2825
2826 while (count--) {
2827 buffer_info = &tx_ring->buffer_info[i];
2828 tx_desc = E1000_TX_DESC(*tx_ring, i);
2829 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2830 tx_desc->lower.data =
2831 cpu_to_le32(txd_lower | buffer_info->length);
2832 tx_desc->upper.data = cpu_to_le32(txd_upper);
2833 if (unlikely(++i == tx_ring->count)) i = 0;
2834 }
2835
2836 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
2837
2838
2839
2840
2841
2842 wmb();
2843
2844 tx_ring->next_to_use = i;
2845 writel(i, hw->hw_addr + tx_ring->tdt);
2846
2847
2848 mmiowb();
2849}
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860#define E1000_FIFO_HDR 0x10
2861#define E1000_82547_PAD_LEN 0x3E0
2862
2863static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
2864 struct sk_buff *skb)
2865{
2866 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
2867 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
2868
2869 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
2870
2871 if (adapter->link_duplex != HALF_DUPLEX)
2872 goto no_fifo_stall_required;
2873
2874 if (atomic_read(&adapter->tx_fifo_stall))
2875 return 1;
2876
2877 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
2878 atomic_set(&adapter->tx_fifo_stall, 1);
2879 return 1;
2880 }
2881
2882no_fifo_stall_required:
2883 adapter->tx_fifo_head += skb_fifo_len;
2884 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
2885 adapter->tx_fifo_head -= adapter->tx_fifo_size;
2886 return 0;
2887}
2888
2889static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
2890{
2891 struct e1000_adapter *adapter = netdev_priv(netdev);
2892 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
2893
2894 netif_stop_queue(netdev);
2895
2896
2897
2898 smp_mb();
2899
2900
2901
2902 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
2903 return -EBUSY;
2904
2905
2906 netif_start_queue(netdev);
2907 ++adapter->restart_queue;
2908 return 0;
2909}
2910
2911static int e1000_maybe_stop_tx(struct net_device *netdev,
2912 struct e1000_tx_ring *tx_ring, int size)
2913{
2914 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
2915 return 0;
2916 return __e1000_maybe_stop_tx(netdev, size);
2917}
2918
2919#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2920static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
2921 struct net_device *netdev)
2922{
2923 struct e1000_adapter *adapter = netdev_priv(netdev);
2924 struct e1000_hw *hw = &adapter->hw;
2925 struct e1000_tx_ring *tx_ring;
2926 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
2927 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
2928 unsigned int tx_flags = 0;
2929 unsigned int len = skb->len - skb->data_len;
2930 unsigned int nr_frags;
2931 unsigned int mss;
2932 int count = 0;
2933 int tso;
2934 unsigned int f;
2935
2936
2937
2938
2939
2940 tx_ring = adapter->tx_ring;
2941
2942 if (unlikely(skb->len <= 0)) {
2943 dev_kfree_skb_any(skb);
2944 return NETDEV_TX_OK;
2945 }
2946
2947 mss = skb_shinfo(skb)->gso_size;
2948
2949
2950
2951
2952
2953
2954 if (mss) {
2955 u8 hdr_len;
2956 max_per_txd = min(mss << 2, max_per_txd);
2957 max_txd_pwr = fls(max_per_txd) - 1;
2958
2959 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2960 if (skb->data_len && hdr_len == len) {
2961 switch (hw->mac_type) {
2962 unsigned int pull_size;
2963 case e1000_82544:
2964
2965
2966
2967
2968
2969
2970 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4)
2971 break;
2972
2973 pull_size = min((unsigned int)4, skb->data_len);
2974 if (!__pskb_pull_tail(skb, pull_size)) {
2975 DPRINTK(DRV, ERR,
2976 "__pskb_pull_tail failed.\n");
2977 dev_kfree_skb_any(skb);
2978 return NETDEV_TX_OK;
2979 }
2980 len = skb->len - skb->data_len;
2981 break;
2982 default:
2983
2984 break;
2985 }
2986 }
2987 }
2988
2989
2990 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
2991 count++;
2992 count++;
2993
2994
2995 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
2996 count++;
2997
2998 count += TXD_USE_COUNT(len, max_txd_pwr);
2999
3000 if (adapter->pcix_82544)
3001 count++;
3002
3003
3004
3005
3006 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
3007 (len > 2015)))
3008 count++;
3009
3010 nr_frags = skb_shinfo(skb)->nr_frags;
3011 for (f = 0; f < nr_frags; f++)
3012 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3013 max_txd_pwr);
3014 if (adapter->pcix_82544)
3015 count += nr_frags;
3016
3017
3018
3019 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2)))
3020 return NETDEV_TX_BUSY;
3021
3022 if (unlikely(hw->mac_type == e1000_82547)) {
3023 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
3024 netif_stop_queue(netdev);
3025 if (!test_bit(__E1000_DOWN, &adapter->flags))
3026 mod_timer(&adapter->tx_fifo_stall_timer,
3027 jiffies + 1);
3028 return NETDEV_TX_BUSY;
3029 }
3030 }
3031
3032 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
3033 tx_flags |= E1000_TX_FLAGS_VLAN;
3034 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3035 }
3036
3037 first = tx_ring->next_to_use;
3038
3039 tso = e1000_tso(adapter, tx_ring, skb);
3040 if (tso < 0) {
3041 dev_kfree_skb_any(skb);
3042 return NETDEV_TX_OK;
3043 }
3044
3045 if (likely(tso)) {
3046 if (likely(hw->mac_type != e1000_82544))
3047 tx_ring->last_tx_tso = 1;
3048 tx_flags |= E1000_TX_FLAGS_TSO;
3049 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
3050 tx_flags |= E1000_TX_FLAGS_CSUM;
3051
3052 if (likely(skb->protocol == htons(ETH_P_IP)))
3053 tx_flags |= E1000_TX_FLAGS_IPV4;
3054
3055 count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd,
3056 nr_frags, mss);
3057
3058 if (count) {
3059 e1000_tx_queue(adapter, tx_ring, tx_flags, count);
3060
3061 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
3062
3063 } else {
3064 dev_kfree_skb_any(skb);
3065 tx_ring->buffer_info[first].time_stamp = 0;
3066 tx_ring->next_to_use = first;
3067 }
3068
3069 return NETDEV_TX_OK;
3070}
3071
3072
3073
3074
3075
3076
3077static void e1000_tx_timeout(struct net_device *netdev)
3078{
3079 struct e1000_adapter *adapter = netdev_priv(netdev);
3080
3081
3082 adapter->tx_timeout_count++;
3083 schedule_work(&adapter->reset_task);
3084}
3085
3086static void e1000_reset_task(struct work_struct *work)
3087{
3088 struct e1000_adapter *adapter =
3089 container_of(work, struct e1000_adapter, reset_task);
3090
3091 e1000_reinit_locked(adapter);
3092}
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3103{
3104 struct e1000_adapter *adapter = netdev_priv(netdev);
3105
3106
3107 return &adapter->net_stats;
3108}
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3119{
3120 struct e1000_adapter *adapter = netdev_priv(netdev);
3121 struct e1000_hw *hw = &adapter->hw;
3122 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
3123
3124 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3125 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3126 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
3127 return -EINVAL;
3128 }
3129
3130
3131 switch (hw->mac_type) {
3132 case e1000_undefined ... e1000_82542_rev2_1:
3133 if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) {
3134 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
3135 return -EINVAL;
3136 }
3137 break;
3138 default:
3139
3140 break;
3141 }
3142
3143 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
3144 msleep(1);
3145
3146 hw->max_frame_size = max_frame;
3147 if (netif_running(netdev))
3148 e1000_down(adapter);
3149
3150
3151
3152
3153
3154
3155
3156
3157 if (max_frame <= E1000_RXBUFFER_256)
3158 adapter->rx_buffer_len = E1000_RXBUFFER_256;
3159 else if (max_frame <= E1000_RXBUFFER_512)
3160 adapter->rx_buffer_len = E1000_RXBUFFER_512;
3161 else if (max_frame <= E1000_RXBUFFER_1024)
3162 adapter->rx_buffer_len = E1000_RXBUFFER_1024;
3163 else if (max_frame <= E1000_RXBUFFER_2048)
3164 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3165 else
3166#if (PAGE_SIZE >= E1000_RXBUFFER_16384)
3167 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3168#elif (PAGE_SIZE >= E1000_RXBUFFER_4096)
3169 adapter->rx_buffer_len = PAGE_SIZE;
3170#endif
3171
3172
3173 if (!hw->tbi_compatibility_on &&
3174 ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) ||
3175 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3176 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3177
3178 printk(KERN_INFO "e1000: %s changing MTU from %d to %d\n",
3179 netdev->name, netdev->mtu, new_mtu);
3180 netdev->mtu = new_mtu;
3181
3182 if (netif_running(netdev))
3183 e1000_up(adapter);
3184 else
3185 e1000_reset(adapter);
3186
3187 clear_bit(__E1000_RESETTING, &adapter->flags);
3188
3189 return 0;
3190}
3191
3192
3193
3194
3195
3196
3197void e1000_update_stats(struct e1000_adapter *adapter)
3198{
3199 struct e1000_hw *hw = &adapter->hw;
3200 struct pci_dev *pdev = adapter->pdev;
3201 unsigned long flags;
3202 u16 phy_tmp;
3203
3204#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3205
3206
3207
3208
3209
3210 if (adapter->link_speed == 0)
3211 return;
3212 if (pci_channel_offline(pdev))
3213 return;
3214
3215 spin_lock_irqsave(&adapter->stats_lock, flags);
3216
3217
3218
3219
3220
3221
3222 adapter->stats.crcerrs += er32(CRCERRS);
3223 adapter->stats.gprc += er32(GPRC);
3224 adapter->stats.gorcl += er32(GORCL);
3225 adapter->stats.gorch += er32(GORCH);
3226 adapter->stats.bprc += er32(BPRC);
3227 adapter->stats.mprc += er32(MPRC);
3228 adapter->stats.roc += er32(ROC);
3229
3230 adapter->stats.prc64 += er32(PRC64);
3231 adapter->stats.prc127 += er32(PRC127);
3232 adapter->stats.prc255 += er32(PRC255);
3233 adapter->stats.prc511 += er32(PRC511);
3234 adapter->stats.prc1023 += er32(PRC1023);
3235 adapter->stats.prc1522 += er32(PRC1522);
3236
3237 adapter->stats.symerrs += er32(SYMERRS);
3238 adapter->stats.mpc += er32(MPC);
3239 adapter->stats.scc += er32(SCC);
3240 adapter->stats.ecol += er32(ECOL);
3241 adapter->stats.mcc += er32(MCC);
3242 adapter->stats.latecol += er32(LATECOL);
3243 adapter->stats.dc += er32(DC);
3244 adapter->stats.sec += er32(SEC);
3245 adapter->stats.rlec += er32(RLEC);
3246 adapter->stats.xonrxc += er32(XONRXC);
3247 adapter->stats.xontxc += er32(XONTXC);
3248 adapter->stats.xoffrxc += er32(XOFFRXC);
3249 adapter->stats.xofftxc += er32(XOFFTXC);
3250 adapter->stats.fcruc += er32(FCRUC);
3251 adapter->stats.gptc += er32(GPTC);
3252 adapter->stats.gotcl += er32(GOTCL);
3253 adapter->stats.gotch += er32(GOTCH);
3254 adapter->stats.rnbc += er32(RNBC);
3255 adapter->stats.ruc += er32(RUC);
3256 adapter->stats.rfc += er32(RFC);
3257 adapter->stats.rjc += er32(RJC);
3258 adapter->stats.torl += er32(TORL);
3259 adapter->stats.torh += er32(TORH);
3260 adapter->stats.totl += er32(TOTL);
3261 adapter->stats.toth += er32(TOTH);
3262 adapter->stats.tpr += er32(TPR);
3263
3264 adapter->stats.ptc64 += er32(PTC64);
3265 adapter->stats.ptc127 += er32(PTC127);
3266 adapter->stats.ptc255 += er32(PTC255);
3267 adapter->stats.ptc511 += er32(PTC511);
3268 adapter->stats.ptc1023 += er32(PTC1023);
3269 adapter->stats.ptc1522 += er32(PTC1522);
3270
3271 adapter->stats.mptc += er32(MPTC);
3272 adapter->stats.bptc += er32(BPTC);
3273
3274
3275
3276 hw->tx_packet_delta = er32(TPT);
3277 adapter->stats.tpt += hw->tx_packet_delta;
3278 hw->collision_delta = er32(COLC);
3279 adapter->stats.colc += hw->collision_delta;
3280
3281 if (hw->mac_type >= e1000_82543) {
3282 adapter->stats.algnerrc += er32(ALGNERRC);
3283 adapter->stats.rxerrc += er32(RXERRC);
3284 adapter->stats.tncrs += er32(TNCRS);
3285 adapter->stats.cexterr += er32(CEXTERR);
3286 adapter->stats.tsctc += er32(TSCTC);
3287 adapter->stats.tsctfc += er32(TSCTFC);
3288 }
3289
3290
3291 adapter->net_stats.multicast = adapter->stats.mprc;
3292 adapter->net_stats.collisions = adapter->stats.colc;
3293
3294
3295
3296
3297
3298 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3299 adapter->stats.crcerrs + adapter->stats.algnerrc +
3300 adapter->stats.ruc + adapter->stats.roc +
3301 adapter->stats.cexterr;
3302 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3303 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
3304 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3305 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3306 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3307
3308
3309 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3310 adapter->net_stats.tx_errors = adapter->stats.txerrc;
3311 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3312 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3313 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3314 if (hw->bad_tx_carr_stats_fd &&
3315 adapter->link_duplex == FULL_DUPLEX) {
3316 adapter->net_stats.tx_carrier_errors = 0;
3317 adapter->stats.tncrs = 0;
3318 }
3319
3320
3321
3322
3323 if (hw->media_type == e1000_media_type_copper) {
3324 if ((adapter->link_speed == SPEED_1000) &&
3325 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3326 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3327 adapter->phy_stats.idle_errors += phy_tmp;
3328 }
3329
3330 if ((hw->mac_type <= e1000_82546) &&
3331 (hw->phy_type == e1000_phy_m88) &&
3332 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3333 adapter->phy_stats.receive_errors += phy_tmp;
3334 }
3335
3336
3337 if (hw->has_smbus) {
3338 adapter->stats.mgptc += er32(MGTPTC);
3339 adapter->stats.mgprc += er32(MGTPRC);
3340 adapter->stats.mgpdc += er32(MGTPDC);
3341 }
3342
3343 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3344}
3345
3346
3347
3348
3349
3350
3351
3352static irqreturn_t e1000_intr(int irq, void *data)
3353{
3354 struct net_device *netdev = data;
3355 struct e1000_adapter *adapter = netdev_priv(netdev);
3356 struct e1000_hw *hw = &adapter->hw;
3357 u32 icr = er32(ICR);
3358
3359 if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags)))
3360 return IRQ_NONE;
3361
3362 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3363 hw->get_link_status = 1;
3364
3365 if (!test_bit(__E1000_DOWN, &adapter->flags))
3366 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3367 }
3368
3369
3370 ew32(IMC, ~0);
3371 E1000_WRITE_FLUSH();
3372
3373 if (likely(napi_schedule_prep(&adapter->napi))) {
3374 adapter->total_tx_bytes = 0;
3375 adapter->total_tx_packets = 0;
3376 adapter->total_rx_bytes = 0;
3377 adapter->total_rx_packets = 0;
3378 __napi_schedule(&adapter->napi);
3379 } else {
3380
3381
3382 if (!test_bit(__E1000_DOWN, &adapter->flags))
3383 e1000_irq_enable(adapter);
3384 }
3385
3386 return IRQ_HANDLED;
3387}
3388
3389
3390
3391
3392
3393static int e1000_clean(struct napi_struct *napi, int budget)
3394{
3395 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
3396 int tx_clean_complete = 0, work_done = 0;
3397
3398 tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]);
3399
3400 adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget);
3401
3402 if (!tx_clean_complete)
3403 work_done = budget;
3404
3405
3406 if (work_done < budget) {
3407 if (likely(adapter->itr_setting & 3))
3408 e1000_set_itr(adapter);
3409 napi_complete(napi);
3410 if (!test_bit(__E1000_DOWN, &adapter->flags))
3411 e1000_irq_enable(adapter);
3412 }
3413
3414 return work_done;
3415}
3416
3417
3418
3419
3420
3421static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
3422 struct e1000_tx_ring *tx_ring)
3423{
3424 struct e1000_hw *hw = &adapter->hw;
3425 struct net_device *netdev = adapter->netdev;
3426 struct e1000_tx_desc *tx_desc, *eop_desc;
3427 struct e1000_buffer *buffer_info;
3428 unsigned int i, eop;
3429 unsigned int count = 0;
3430 unsigned int total_tx_bytes=0, total_tx_packets=0;
3431
3432 i = tx_ring->next_to_clean;
3433 eop = tx_ring->buffer_info[i].next_to_watch;
3434 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3435
3436 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
3437 (count < tx_ring->count)) {
3438 bool cleaned = false;
3439 for ( ; !cleaned; count++) {
3440 tx_desc = E1000_TX_DESC(*tx_ring, i);
3441 buffer_info = &tx_ring->buffer_info[i];
3442 cleaned = (i == eop);
3443
3444 if (cleaned) {
3445 struct sk_buff *skb = buffer_info->skb;
3446 unsigned int segs, bytecount;
3447 segs = skb_shinfo(skb)->gso_segs ?: 1;
3448
3449 bytecount = ((segs - 1) * skb_headlen(skb)) +
3450 skb->len;
3451 total_tx_packets += segs;
3452 total_tx_bytes += bytecount;
3453 }
3454 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3455 tx_desc->upper.data = 0;
3456
3457 if (unlikely(++i == tx_ring->count)) i = 0;
3458 }
3459
3460 eop = tx_ring->buffer_info[i].next_to_watch;
3461 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3462 }
3463
3464 tx_ring->next_to_clean = i;
3465
3466#define TX_WAKE_THRESHOLD 32
3467 if (unlikely(count && netif_carrier_ok(netdev) &&
3468 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3469
3470
3471
3472 smp_mb();
3473
3474 if (netif_queue_stopped(netdev) &&
3475 !(test_bit(__E1000_DOWN, &adapter->flags))) {
3476 netif_wake_queue(netdev);
3477 ++adapter->restart_queue;
3478 }
3479 }
3480
3481 if (adapter->detect_tx_hung) {
3482
3483
3484 adapter->detect_tx_hung = false;
3485 if (tx_ring->buffer_info[eop].time_stamp &&
3486 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3487 (adapter->tx_timeout_factor * HZ))
3488 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
3489
3490
3491 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3492 " Tx Queue <%lu>\n"
3493 " TDH <%x>\n"
3494 " TDT <%x>\n"
3495 " next_to_use <%x>\n"
3496 " next_to_clean <%x>\n"
3497 "buffer_info[next_to_clean]\n"
3498 " time_stamp <%lx>\n"
3499 " next_to_watch <%x>\n"
3500 " jiffies <%lx>\n"
3501 " next_to_watch.status <%x>\n",
3502 (unsigned long)((tx_ring - adapter->tx_ring) /
3503 sizeof(struct e1000_tx_ring)),
3504 readl(hw->hw_addr + tx_ring->tdh),
3505 readl(hw->hw_addr + tx_ring->tdt),
3506 tx_ring->next_to_use,
3507 tx_ring->next_to_clean,
3508 tx_ring->buffer_info[eop].time_stamp,
3509 eop,
3510 jiffies,
3511 eop_desc->upper.fields.status);
3512 netif_stop_queue(netdev);
3513 }
3514 }
3515 adapter->total_tx_bytes += total_tx_bytes;
3516 adapter->total_tx_packets += total_tx_packets;
3517 adapter->net_stats.tx_bytes += total_tx_bytes;
3518 adapter->net_stats.tx_packets += total_tx_packets;
3519 return (count < tx_ring->count);
3520}
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
3531 u32 csum, struct sk_buff *skb)
3532{
3533 struct e1000_hw *hw = &adapter->hw;
3534 u16 status = (u16)status_err;
3535 u8 errors = (u8)(status_err >> 24);
3536 skb->ip_summed = CHECKSUM_NONE;
3537
3538
3539 if (unlikely(hw->mac_type < e1000_82543)) return;
3540
3541 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
3542
3543 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3544
3545 adapter->hw_csum_err++;
3546 return;
3547 }
3548
3549 if (!(status & E1000_RXD_STAT_TCPCS))
3550 return;
3551
3552
3553 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3554
3555 skb->ip_summed = CHECKSUM_UNNECESSARY;
3556 }
3557 adapter->hw_csum_good++;
3558}
3559
3560
3561
3562
3563static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
3564 u16 length)
3565{
3566 bi->page = NULL;
3567 skb->len += length;
3568 skb->data_len += length;
3569 skb->truesize += length;
3570}
3571
3572
3573
3574
3575
3576
3577
3578
3579static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status,
3580 __le16 vlan, struct sk_buff *skb)
3581{
3582 if (unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP))) {
3583 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3584 le16_to_cpu(vlan) &
3585 E1000_RXD_SPC_VLAN_MASK);
3586 } else {
3587 netif_receive_skb(skb);
3588 }
3589}
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
3602 struct e1000_rx_ring *rx_ring,
3603 int *work_done, int work_to_do)
3604{
3605 struct e1000_hw *hw = &adapter->hw;
3606 struct net_device *netdev = adapter->netdev;
3607 struct pci_dev *pdev = adapter->pdev;
3608 struct e1000_rx_desc *rx_desc, *next_rxd;
3609 struct e1000_buffer *buffer_info, *next_buffer;
3610 unsigned long irq_flags;
3611 u32 length;
3612 unsigned int i;
3613 int cleaned_count = 0;
3614 bool cleaned = false;
3615 unsigned int total_rx_bytes=0, total_rx_packets=0;
3616
3617 i = rx_ring->next_to_clean;
3618 rx_desc = E1000_RX_DESC(*rx_ring, i);
3619 buffer_info = &rx_ring->buffer_info[i];
3620
3621 while (rx_desc->status & E1000_RXD_STAT_DD) {
3622 struct sk_buff *skb;
3623 u8 status;
3624
3625 if (*work_done >= work_to_do)
3626 break;
3627 (*work_done)++;
3628
3629 status = rx_desc->status;
3630 skb = buffer_info->skb;
3631 buffer_info->skb = NULL;
3632
3633 if (++i == rx_ring->count) i = 0;
3634 next_rxd = E1000_RX_DESC(*rx_ring, i);
3635 prefetch(next_rxd);
3636
3637 next_buffer = &rx_ring->buffer_info[i];
3638
3639 cleaned = true;
3640 cleaned_count++;
3641 pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
3642 PCI_DMA_FROMDEVICE);
3643 buffer_info->dma = 0;
3644
3645 length = le16_to_cpu(rx_desc->length);
3646
3647
3648 if (unlikely((status & E1000_RXD_STAT_EOP) &&
3649 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
3650 u8 last_byte = *(skb->data + length - 1);
3651 if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
3652 last_byte)) {
3653 spin_lock_irqsave(&adapter->stats_lock,
3654 irq_flags);
3655 e1000_tbi_adjust_stats(hw, &adapter->stats,
3656 length, skb->data);
3657 spin_unlock_irqrestore(&adapter->stats_lock,
3658 irq_flags);
3659 length--;
3660 } else {
3661
3662 buffer_info->skb = skb;
3663
3664
3665 if (rx_ring->rx_skb_top)
3666 dev_kfree_skb(rx_ring->rx_skb_top);
3667 rx_ring->rx_skb_top = NULL;
3668 goto next_desc;
3669 }
3670 }
3671
3672#define rxtop rx_ring->rx_skb_top
3673 if (!(status & E1000_RXD_STAT_EOP)) {
3674
3675 if (!rxtop) {
3676
3677 rxtop = skb;
3678 skb_fill_page_desc(rxtop, 0, buffer_info->page,
3679 0, length);
3680 } else {
3681
3682 skb_fill_page_desc(rxtop,
3683 skb_shinfo(rxtop)->nr_frags,
3684 buffer_info->page, 0, length);
3685
3686 buffer_info->skb = skb;
3687 }
3688 e1000_consume_page(buffer_info, rxtop, length);
3689 goto next_desc;
3690 } else {
3691 if (rxtop) {
3692
3693 skb_fill_page_desc(rxtop,
3694 skb_shinfo(rxtop)->nr_frags,
3695 buffer_info->page, 0, length);
3696
3697
3698 buffer_info->skb = skb;
3699 skb = rxtop;
3700 rxtop = NULL;
3701 e1000_consume_page(buffer_info, skb, length);
3702 } else {
3703
3704
3705 if (length <= copybreak &&
3706 skb_tailroom(skb) >= length) {
3707 u8 *vaddr;
3708 vaddr = kmap_atomic(buffer_info->page,
3709 KM_SKB_DATA_SOFTIRQ);
3710 memcpy(skb_tail_pointer(skb), vaddr, length);
3711 kunmap_atomic(vaddr,
3712 KM_SKB_DATA_SOFTIRQ);
3713
3714
3715 skb_put(skb, length);
3716 } else {
3717 skb_fill_page_desc(skb, 0,
3718 buffer_info->page, 0,
3719 length);
3720 e1000_consume_page(buffer_info, skb,
3721 length);
3722 }
3723 }
3724 }
3725
3726
3727 e1000_rx_checksum(adapter,
3728 (u32)(status) |
3729 ((u32)(rx_desc->errors) << 24),
3730 le16_to_cpu(rx_desc->csum), skb);
3731
3732 pskb_trim(skb, skb->len - 4);
3733
3734
3735 total_rx_bytes += skb->len;
3736 total_rx_packets++;
3737
3738
3739 if (!pskb_may_pull(skb, ETH_HLEN)) {
3740 DPRINTK(DRV, ERR, "pskb_may_pull failed.\n");
3741 dev_kfree_skb(skb);
3742 goto next_desc;
3743 }
3744
3745 skb->protocol = eth_type_trans(skb, netdev);
3746
3747 e1000_receive_skb(adapter, status, rx_desc->special, skb);
3748
3749next_desc:
3750 rx_desc->status = 0;
3751
3752
3753 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
3754 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3755 cleaned_count = 0;
3756 }
3757
3758
3759 rx_desc = next_rxd;
3760 buffer_info = next_buffer;
3761 }
3762 rx_ring->next_to_clean = i;
3763
3764 cleaned_count = E1000_DESC_UNUSED(rx_ring);
3765 if (cleaned_count)
3766 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3767
3768 adapter->total_rx_packets += total_rx_packets;
3769 adapter->total_rx_bytes += total_rx_bytes;
3770 adapter->net_stats.rx_bytes += total_rx_bytes;
3771 adapter->net_stats.rx_packets += total_rx_packets;
3772 return cleaned;
3773}
3774
3775
3776
3777
3778
3779
3780
3781
3782static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
3783 struct e1000_rx_ring *rx_ring,
3784 int *work_done, int work_to_do)
3785{
3786 struct e1000_hw *hw = &adapter->hw;
3787 struct net_device *netdev = adapter->netdev;
3788 struct pci_dev *pdev = adapter->pdev;
3789 struct e1000_rx_desc *rx_desc, *next_rxd;
3790 struct e1000_buffer *buffer_info, *next_buffer;
3791 unsigned long flags;
3792 u32 length;
3793 unsigned int i;
3794 int cleaned_count = 0;
3795 bool cleaned = false;
3796 unsigned int total_rx_bytes=0, total_rx_packets=0;
3797
3798 i = rx_ring->next_to_clean;
3799 rx_desc = E1000_RX_DESC(*rx_ring, i);
3800 buffer_info = &rx_ring->buffer_info[i];
3801
3802 while (rx_desc->status & E1000_RXD_STAT_DD) {
3803 struct sk_buff *skb;
3804 u8 status;
3805
3806 if (*work_done >= work_to_do)
3807 break;
3808 (*work_done)++;
3809
3810 status = rx_desc->status;
3811 skb = buffer_info->skb;
3812 buffer_info->skb = NULL;
3813
3814 prefetch(skb->data - NET_IP_ALIGN);
3815
3816 if (++i == rx_ring->count) i = 0;
3817 next_rxd = E1000_RX_DESC(*rx_ring, i);
3818 prefetch(next_rxd);
3819
3820 next_buffer = &rx_ring->buffer_info[i];
3821
3822 cleaned = true;
3823 cleaned_count++;
3824 pci_unmap_single(pdev, buffer_info->dma, buffer_info->length,
3825 PCI_DMA_FROMDEVICE);
3826 buffer_info->dma = 0;
3827
3828 length = le16_to_cpu(rx_desc->length);
3829
3830
3831 if (unlikely(!(status & E1000_RXD_STAT_EOP) || (length <= 4))) {
3832
3833 E1000_DBG("%s: Receive packet consumed multiple"
3834 " buffers\n", netdev->name);
3835
3836 buffer_info->skb = skb;
3837 goto next_desc;
3838 }
3839
3840 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
3841 u8 last_byte = *(skb->data + length - 1);
3842 if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
3843 last_byte)) {
3844 spin_lock_irqsave(&adapter->stats_lock, flags);
3845 e1000_tbi_adjust_stats(hw, &adapter->stats,
3846 length, skb->data);
3847 spin_unlock_irqrestore(&adapter->stats_lock,
3848 flags);
3849 length--;
3850 } else {
3851
3852 buffer_info->skb = skb;
3853 goto next_desc;
3854 }
3855 }
3856
3857
3858
3859 length -= 4;
3860
3861
3862 total_rx_bytes += length;
3863 total_rx_packets++;
3864
3865
3866
3867
3868 if (length < copybreak) {
3869 struct sk_buff *new_skb =
3870 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
3871 if (new_skb) {
3872 skb_reserve(new_skb, NET_IP_ALIGN);
3873 skb_copy_to_linear_data_offset(new_skb,
3874 -NET_IP_ALIGN,
3875 (skb->data -
3876 NET_IP_ALIGN),
3877 (length +
3878 NET_IP_ALIGN));
3879
3880 buffer_info->skb = skb;
3881 skb = new_skb;
3882 }
3883
3884 }
3885
3886 skb_put(skb, length);
3887
3888
3889 e1000_rx_checksum(adapter,
3890 (u32)(status) |
3891 ((u32)(rx_desc->errors) << 24),
3892 le16_to_cpu(rx_desc->csum), skb);
3893
3894 skb->protocol = eth_type_trans(skb, netdev);
3895
3896 e1000_receive_skb(adapter, status, rx_desc->special, skb);
3897
3898next_desc:
3899 rx_desc->status = 0;
3900
3901
3902 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
3903 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3904 cleaned_count = 0;
3905 }
3906
3907
3908 rx_desc = next_rxd;
3909 buffer_info = next_buffer;
3910 }
3911 rx_ring->next_to_clean = i;
3912
3913 cleaned_count = E1000_DESC_UNUSED(rx_ring);
3914 if (cleaned_count)
3915 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3916
3917 adapter->total_rx_packets += total_rx_packets;
3918 adapter->total_rx_bytes += total_rx_bytes;
3919 adapter->net_stats.rx_bytes += total_rx_bytes;
3920 adapter->net_stats.rx_packets += total_rx_packets;
3921 return cleaned;
3922}
3923
3924
3925
3926
3927
3928
3929
3930
3931static void
3932e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
3933 struct e1000_rx_ring *rx_ring, int cleaned_count)
3934{
3935 struct net_device *netdev = adapter->netdev;
3936 struct pci_dev *pdev = adapter->pdev;
3937 struct e1000_rx_desc *rx_desc;
3938 struct e1000_buffer *buffer_info;
3939 struct sk_buff *skb;
3940 unsigned int i;
3941 unsigned int bufsz = 256 -
3942 16 -
3943 NET_IP_ALIGN;
3944
3945 i = rx_ring->next_to_use;
3946 buffer_info = &rx_ring->buffer_info[i];
3947
3948 while (cleaned_count--) {
3949 skb = buffer_info->skb;
3950 if (skb) {
3951 skb_trim(skb, 0);
3952 goto check_page;
3953 }
3954
3955 skb = netdev_alloc_skb(netdev, bufsz);
3956 if (unlikely(!skb)) {
3957
3958 adapter->alloc_rx_buff_failed++;
3959 break;
3960 }
3961
3962
3963 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3964 struct sk_buff *oldskb = skb;
3965 DPRINTK(PROBE, ERR, "skb align check failed: %u bytes "
3966 "at %p\n", bufsz, skb->data);
3967
3968 skb = netdev_alloc_skb(netdev, bufsz);
3969
3970 if (!skb) {
3971 dev_kfree_skb(oldskb);
3972 adapter->alloc_rx_buff_failed++;
3973 break;
3974 }
3975
3976 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3977
3978 dev_kfree_skb(skb);
3979 dev_kfree_skb(oldskb);
3980 break;
3981 }
3982
3983
3984 dev_kfree_skb(oldskb);
3985 }
3986
3987
3988
3989
3990 skb_reserve(skb, NET_IP_ALIGN);
3991
3992 buffer_info->skb = skb;
3993 buffer_info->length = adapter->rx_buffer_len;
3994check_page:
3995
3996 if (!buffer_info->page) {
3997 buffer_info->page = alloc_page(GFP_ATOMIC);
3998 if (unlikely(!buffer_info->page)) {
3999 adapter->alloc_rx_buff_failed++;
4000 break;
4001 }
4002 }
4003
4004 if (!buffer_info->dma)
4005 buffer_info->dma = pci_map_page(pdev,
4006 buffer_info->page, 0,
4007 buffer_info->length,
4008 PCI_DMA_FROMDEVICE);
4009
4010 rx_desc = E1000_RX_DESC(*rx_ring, i);
4011 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4012
4013 if (unlikely(++i == rx_ring->count))
4014 i = 0;
4015 buffer_info = &rx_ring->buffer_info[i];
4016 }
4017
4018 if (likely(rx_ring->next_to_use != i)) {
4019 rx_ring->next_to_use = i;
4020 if (unlikely(i-- == 0))
4021 i = (rx_ring->count - 1);
4022
4023
4024
4025
4026
4027 wmb();
4028 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
4029 }
4030}
4031
4032
4033
4034
4035
4036
4037static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4038 struct e1000_rx_ring *rx_ring,
4039 int cleaned_count)
4040{
4041 struct e1000_hw *hw = &adapter->hw;
4042 struct net_device *netdev = adapter->netdev;
4043 struct pci_dev *pdev = adapter->pdev;
4044 struct e1000_rx_desc *rx_desc;
4045 struct e1000_buffer *buffer_info;
4046 struct sk_buff *skb;
4047 unsigned int i;
4048 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
4049
4050 i = rx_ring->next_to_use;
4051 buffer_info = &rx_ring->buffer_info[i];
4052
4053 while (cleaned_count--) {
4054 skb = buffer_info->skb;
4055 if (skb) {
4056 skb_trim(skb, 0);
4057 goto map_skb;
4058 }
4059
4060 skb = netdev_alloc_skb(netdev, bufsz);
4061 if (unlikely(!skb)) {
4062
4063 adapter->alloc_rx_buff_failed++;
4064 break;
4065 }
4066
4067
4068 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4069 struct sk_buff *oldskb = skb;
4070 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
4071 "at %p\n", bufsz, skb->data);
4072
4073 skb = netdev_alloc_skb(netdev, bufsz);
4074
4075 if (!skb) {
4076 dev_kfree_skb(oldskb);
4077 adapter->alloc_rx_buff_failed++;
4078 break;
4079 }
4080
4081 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4082
4083 dev_kfree_skb(skb);
4084 dev_kfree_skb(oldskb);
4085 adapter->alloc_rx_buff_failed++;
4086 break;
4087 }
4088
4089
4090 dev_kfree_skb(oldskb);
4091 }
4092
4093
4094
4095
4096 skb_reserve(skb, NET_IP_ALIGN);
4097
4098 buffer_info->skb = skb;
4099 buffer_info->length = adapter->rx_buffer_len;
4100map_skb:
4101 buffer_info->dma = pci_map_single(pdev,
4102 skb->data,
4103 buffer_info->length,
4104 PCI_DMA_FROMDEVICE);
4105
4106
4107
4108
4109
4110
4111
4112 if (!e1000_check_64k_bound(adapter,
4113 (void *)(unsigned long)buffer_info->dma,
4114 adapter->rx_buffer_len)) {
4115 DPRINTK(RX_ERR, ERR,
4116 "dma align check failed: %u bytes at %p\n",
4117 adapter->rx_buffer_len,
4118 (void *)(unsigned long)buffer_info->dma);
4119 dev_kfree_skb(skb);
4120 buffer_info->skb = NULL;
4121
4122 pci_unmap_single(pdev, buffer_info->dma,
4123 adapter->rx_buffer_len,
4124 PCI_DMA_FROMDEVICE);
4125 buffer_info->dma = 0;
4126
4127 adapter->alloc_rx_buff_failed++;
4128 break;
4129 }
4130 rx_desc = E1000_RX_DESC(*rx_ring, i);
4131 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4132
4133 if (unlikely(++i == rx_ring->count))
4134 i = 0;
4135 buffer_info = &rx_ring->buffer_info[i];
4136 }
4137
4138 if (likely(rx_ring->next_to_use != i)) {
4139 rx_ring->next_to_use = i;
4140 if (unlikely(i-- == 0))
4141 i = (rx_ring->count - 1);
4142
4143
4144
4145
4146
4147 wmb();
4148 writel(i, hw->hw_addr + rx_ring->rdt);
4149 }
4150}
4151
4152
4153
4154
4155
4156
4157static void e1000_smartspeed(struct e1000_adapter *adapter)
4158{
4159 struct e1000_hw *hw = &adapter->hw;
4160 u16 phy_status;
4161 u16 phy_ctrl;
4162
4163 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
4164 !(hw->autoneg_advertised & ADVERTISE_1000_FULL))
4165 return;
4166
4167 if (adapter->smartspeed == 0) {
4168
4169
4170 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4171 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4172 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4173 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4174 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4175 if (phy_ctrl & CR_1000T_MS_ENABLE) {
4176 phy_ctrl &= ~CR_1000T_MS_ENABLE;
4177 e1000_write_phy_reg(hw, PHY_1000T_CTRL,
4178 phy_ctrl);
4179 adapter->smartspeed++;
4180 if (!e1000_phy_setup_autoneg(hw) &&
4181 !e1000_read_phy_reg(hw, PHY_CTRL,
4182 &phy_ctrl)) {
4183 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4184 MII_CR_RESTART_AUTO_NEG);
4185 e1000_write_phy_reg(hw, PHY_CTRL,
4186 phy_ctrl);
4187 }
4188 }
4189 return;
4190 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4191
4192 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4193 phy_ctrl |= CR_1000T_MS_ENABLE;
4194 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
4195 if (!e1000_phy_setup_autoneg(hw) &&
4196 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
4197 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4198 MII_CR_RESTART_AUTO_NEG);
4199 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl);
4200 }
4201 }
4202
4203 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4204 adapter->smartspeed = 0;
4205}
4206
4207
4208
4209
4210
4211
4212
4213
4214static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4215{
4216 switch (cmd) {
4217 case SIOCGMIIPHY:
4218 case SIOCGMIIREG:
4219 case SIOCSMIIREG:
4220 return e1000_mii_ioctl(netdev, ifr, cmd);
4221 default:
4222 return -EOPNOTSUPP;
4223 }
4224}
4225
4226
4227
4228
4229
4230
4231
4232
4233static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4234 int cmd)
4235{
4236 struct e1000_adapter *adapter = netdev_priv(netdev);
4237 struct e1000_hw *hw = &adapter->hw;
4238 struct mii_ioctl_data *data = if_mii(ifr);
4239 int retval;
4240 u16 mii_reg;
4241 u16 spddplx;
4242 unsigned long flags;
4243
4244 if (hw->media_type != e1000_media_type_copper)
4245 return -EOPNOTSUPP;
4246
4247 switch (cmd) {
4248 case SIOCGMIIPHY:
4249 data->phy_id = hw->phy_addr;
4250 break;
4251 case SIOCGMIIREG:
4252 spin_lock_irqsave(&adapter->stats_lock, flags);
4253 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
4254 &data->val_out)) {
4255 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4256 return -EIO;
4257 }
4258 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4259 break;
4260 case SIOCSMIIREG:
4261 if (data->reg_num & ~(0x1F))
4262 return -EFAULT;
4263 mii_reg = data->val_in;
4264 spin_lock_irqsave(&adapter->stats_lock, flags);
4265 if (e1000_write_phy_reg(hw, data->reg_num,
4266 mii_reg)) {
4267 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4268 return -EIO;
4269 }
4270 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4271 if (hw->media_type == e1000_media_type_copper) {
4272 switch (data->reg_num) {
4273 case PHY_CTRL:
4274 if (mii_reg & MII_CR_POWER_DOWN)
4275 break;
4276 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4277 hw->autoneg = 1;
4278 hw->autoneg_advertised = 0x2F;
4279 } else {
4280 if (mii_reg & 0x40)
4281 spddplx = SPEED_1000;
4282 else if (mii_reg & 0x2000)
4283 spddplx = SPEED_100;
4284 else
4285 spddplx = SPEED_10;
4286 spddplx += (mii_reg & 0x100)
4287 ? DUPLEX_FULL :
4288 DUPLEX_HALF;
4289 retval = e1000_set_spd_dplx(adapter,
4290 spddplx);
4291 if (retval)
4292 return retval;
4293 }
4294 if (netif_running(adapter->netdev))
4295 e1000_reinit_locked(adapter);
4296 else
4297 e1000_reset(adapter);
4298 break;
4299 case M88E1000_PHY_SPEC_CTRL:
4300 case M88E1000_EXT_PHY_SPEC_CTRL:
4301 if (e1000_phy_reset(hw))
4302 return -EIO;
4303 break;
4304 }
4305 } else {
4306 switch (data->reg_num) {
4307 case PHY_CTRL:
4308 if (mii_reg & MII_CR_POWER_DOWN)
4309 break;
4310 if (netif_running(adapter->netdev))
4311 e1000_reinit_locked(adapter);
4312 else
4313 e1000_reset(adapter);
4314 break;
4315 }
4316 }
4317 break;
4318 default:
4319 return -EOPNOTSUPP;
4320 }
4321 return E1000_SUCCESS;
4322}
4323
4324void e1000_pci_set_mwi(struct e1000_hw *hw)
4325{
4326 struct e1000_adapter *adapter = hw->back;
4327 int ret_val = pci_set_mwi(adapter->pdev);
4328
4329 if (ret_val)
4330 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4331}
4332
4333void e1000_pci_clear_mwi(struct e1000_hw *hw)
4334{
4335 struct e1000_adapter *adapter = hw->back;
4336
4337 pci_clear_mwi(adapter->pdev);
4338}
4339
4340int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
4341{
4342 struct e1000_adapter *adapter = hw->back;
4343 return pcix_get_mmrbc(adapter->pdev);
4344}
4345
4346void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
4347{
4348 struct e1000_adapter *adapter = hw->back;
4349 pcix_set_mmrbc(adapter->pdev, mmrbc);
4350}
4351
4352void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
4353{
4354 outl(value, port);
4355}
4356
4357static void e1000_vlan_rx_register(struct net_device *netdev,
4358 struct vlan_group *grp)
4359{
4360 struct e1000_adapter *adapter = netdev_priv(netdev);
4361 struct e1000_hw *hw = &adapter->hw;
4362 u32 ctrl, rctl;
4363
4364 if (!test_bit(__E1000_DOWN, &adapter->flags))
4365 e1000_irq_disable(adapter);
4366 adapter->vlgrp = grp;
4367
4368 if (grp) {
4369
4370 ctrl = er32(CTRL);
4371 ctrl |= E1000_CTRL_VME;
4372 ew32(CTRL, ctrl);
4373
4374
4375 rctl = er32(RCTL);
4376 rctl &= ~E1000_RCTL_CFIEN;
4377 if (!(netdev->flags & IFF_PROMISC))
4378 rctl |= E1000_RCTL_VFE;
4379 ew32(RCTL, rctl);
4380 e1000_update_mng_vlan(adapter);
4381 } else {
4382
4383 ctrl = er32(CTRL);
4384 ctrl &= ~E1000_CTRL_VME;
4385 ew32(CTRL, ctrl);
4386
4387
4388 rctl = er32(RCTL);
4389 rctl &= ~E1000_RCTL_VFE;
4390 ew32(RCTL, rctl);
4391
4392 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
4393 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4394 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4395 }
4396 }
4397
4398 if (!test_bit(__E1000_DOWN, &adapter->flags))
4399 e1000_irq_enable(adapter);
4400}
4401
4402static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
4403{
4404 struct e1000_adapter *adapter = netdev_priv(netdev);
4405 struct e1000_hw *hw = &adapter->hw;
4406 u32 vfta, index;
4407
4408 if ((hw->mng_cookie.status &
4409 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4410 (vid == adapter->mng_vlan_id))
4411 return;
4412
4413 index = (vid >> 5) & 0x7F;
4414 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
4415 vfta |= (1 << (vid & 0x1F));
4416 e1000_write_vfta(hw, index, vfta);
4417}
4418
4419static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
4420{
4421 struct e1000_adapter *adapter = netdev_priv(netdev);
4422 struct e1000_hw *hw = &adapter->hw;
4423 u32 vfta, index;
4424
4425 if (!test_bit(__E1000_DOWN, &adapter->flags))
4426 e1000_irq_disable(adapter);
4427 vlan_group_set_device(adapter->vlgrp, vid, NULL);
4428 if (!test_bit(__E1000_DOWN, &adapter->flags))
4429 e1000_irq_enable(adapter);
4430
4431
4432 index = (vid >> 5) & 0x7F;
4433 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
4434 vfta &= ~(1 << (vid & 0x1F));
4435 e1000_write_vfta(hw, index, vfta);
4436}
4437
4438static void e1000_restore_vlan(struct e1000_adapter *adapter)
4439{
4440 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4441
4442 if (adapter->vlgrp) {
4443 u16 vid;
4444 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4445 if (!vlan_group_get_device(adapter->vlgrp, vid))
4446 continue;
4447 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4448 }
4449 }
4450}
4451
4452int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
4453{
4454 struct e1000_hw *hw = &adapter->hw;
4455
4456 hw->autoneg = 0;
4457
4458
4459 if ((hw->media_type == e1000_media_type_fiber) &&
4460 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4461 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4462 return -EINVAL;
4463 }
4464
4465 switch (spddplx) {
4466 case SPEED_10 + DUPLEX_HALF:
4467 hw->forced_speed_duplex = e1000_10_half;
4468 break;
4469 case SPEED_10 + DUPLEX_FULL:
4470 hw->forced_speed_duplex = e1000_10_full;
4471 break;
4472 case SPEED_100 + DUPLEX_HALF:
4473 hw->forced_speed_duplex = e1000_100_half;
4474 break;
4475 case SPEED_100 + DUPLEX_FULL:
4476 hw->forced_speed_duplex = e1000_100_full;
4477 break;
4478 case SPEED_1000 + DUPLEX_FULL:
4479 hw->autoneg = 1;
4480 hw->autoneg_advertised = ADVERTISE_1000_FULL;
4481 break;
4482 case SPEED_1000 + DUPLEX_HALF:
4483 default:
4484 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4485 return -EINVAL;
4486 }
4487 return 0;
4488}
4489
4490static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)
4491{
4492 struct net_device *netdev = pci_get_drvdata(pdev);
4493 struct e1000_adapter *adapter = netdev_priv(netdev);
4494 struct e1000_hw *hw = &adapter->hw;
4495 u32 ctrl, ctrl_ext, rctl, status;
4496 u32 wufc = adapter->wol;
4497#ifdef CONFIG_PM
4498 int retval = 0;
4499#endif
4500
4501 netif_device_detach(netdev);
4502
4503 if (netif_running(netdev)) {
4504 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
4505 e1000_down(adapter);
4506 }
4507
4508#ifdef CONFIG_PM
4509 retval = pci_save_state(pdev);
4510 if (retval)
4511 return retval;
4512#endif
4513
4514 status = er32(STATUS);
4515 if (status & E1000_STATUS_LU)
4516 wufc &= ~E1000_WUFC_LNKC;
4517
4518 if (wufc) {
4519 e1000_setup_rctl(adapter);
4520 e1000_set_rx_mode(netdev);
4521
4522
4523 if (wufc & E1000_WUFC_MC) {
4524 rctl = er32(RCTL);
4525 rctl |= E1000_RCTL_MPE;
4526 ew32(RCTL, rctl);
4527 }
4528
4529 if (hw->mac_type >= e1000_82540) {
4530 ctrl = er32(CTRL);
4531
4532 #define E1000_CTRL_ADVD3WUC 0x00100000
4533
4534 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4535 ctrl |= E1000_CTRL_ADVD3WUC |
4536 E1000_CTRL_EN_PHY_PWR_MGMT;
4537 ew32(CTRL, ctrl);
4538 }
4539
4540 if (hw->media_type == e1000_media_type_fiber ||
4541 hw->media_type == e1000_media_type_internal_serdes) {
4542
4543 ctrl_ext = er32(CTRL_EXT);
4544 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4545 ew32(CTRL_EXT, ctrl_ext);
4546 }
4547
4548 ew32(WUC, E1000_WUC_PME_EN);
4549 ew32(WUFC, wufc);
4550 } else {
4551 ew32(WUC, 0);
4552 ew32(WUFC, 0);
4553 }
4554
4555 e1000_release_manageability(adapter);
4556
4557 *enable_wake = !!wufc;
4558
4559
4560 if (adapter->en_mng_pt)
4561 *enable_wake = true;
4562
4563 if (netif_running(netdev))
4564 e1000_free_irq(adapter);
4565
4566 pci_disable_device(pdev);
4567
4568 return 0;
4569}
4570
4571#ifdef CONFIG_PM
4572static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4573{
4574 int retval;
4575 bool wake;
4576
4577 retval = __e1000_shutdown(pdev, &wake);
4578 if (retval)
4579 return retval;
4580
4581 if (wake) {
4582 pci_prepare_to_sleep(pdev);
4583 } else {
4584 pci_wake_from_d3(pdev, false);
4585 pci_set_power_state(pdev, PCI_D3hot);
4586 }
4587
4588 return 0;
4589}
4590
4591static int e1000_resume(struct pci_dev *pdev)
4592{
4593 struct net_device *netdev = pci_get_drvdata(pdev);
4594 struct e1000_adapter *adapter = netdev_priv(netdev);
4595 struct e1000_hw *hw = &adapter->hw;
4596 u32 err;
4597
4598 pci_set_power_state(pdev, PCI_D0);
4599 pci_restore_state(pdev);
4600
4601 if (adapter->need_ioport)
4602 err = pci_enable_device(pdev);
4603 else
4604 err = pci_enable_device_mem(pdev);
4605 if (err) {
4606 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
4607 return err;
4608 }
4609 pci_set_master(pdev);
4610
4611 pci_enable_wake(pdev, PCI_D3hot, 0);
4612 pci_enable_wake(pdev, PCI_D3cold, 0);
4613
4614 if (netif_running(netdev)) {
4615 err = e1000_request_irq(adapter);
4616 if (err)
4617 return err;
4618 }
4619
4620 e1000_power_up_phy(adapter);
4621 e1000_reset(adapter);
4622 ew32(WUS, ~0);
4623
4624 e1000_init_manageability(adapter);
4625
4626 if (netif_running(netdev))
4627 e1000_up(adapter);
4628
4629 netif_device_attach(netdev);
4630
4631 return 0;
4632}
4633#endif
4634
4635static void e1000_shutdown(struct pci_dev *pdev)
4636{
4637 bool wake;
4638
4639 __e1000_shutdown(pdev, &wake);
4640
4641 if (system_state == SYSTEM_POWER_OFF) {
4642 pci_wake_from_d3(pdev, wake);
4643 pci_set_power_state(pdev, PCI_D3hot);
4644 }
4645}
4646
4647#ifdef CONFIG_NET_POLL_CONTROLLER
4648
4649
4650
4651
4652
4653static void e1000_netpoll(struct net_device *netdev)
4654{
4655 struct e1000_adapter *adapter = netdev_priv(netdev);
4656
4657 disable_irq(adapter->pdev->irq);
4658 e1000_intr(adapter->pdev->irq, netdev);
4659 enable_irq(adapter->pdev->irq);
4660}
4661#endif
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4672 pci_channel_state_t state)
4673{
4674 struct net_device *netdev = pci_get_drvdata(pdev);
4675 struct e1000_adapter *adapter = netdev_priv(netdev);
4676
4677 netif_device_detach(netdev);
4678
4679 if (state == pci_channel_io_perm_failure)
4680 return PCI_ERS_RESULT_DISCONNECT;
4681
4682 if (netif_running(netdev))
4683 e1000_down(adapter);
4684 pci_disable_device(pdev);
4685
4686
4687 return PCI_ERS_RESULT_NEED_RESET;
4688}
4689
4690
4691
4692
4693
4694
4695
4696
4697static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4698{
4699 struct net_device *netdev = pci_get_drvdata(pdev);
4700 struct e1000_adapter *adapter = netdev_priv(netdev);
4701 struct e1000_hw *hw = &adapter->hw;
4702 int err;
4703
4704 if (adapter->need_ioport)
4705 err = pci_enable_device(pdev);
4706 else
4707 err = pci_enable_device_mem(pdev);
4708 if (err) {
4709 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
4710 return PCI_ERS_RESULT_DISCONNECT;
4711 }
4712 pci_set_master(pdev);
4713
4714 pci_enable_wake(pdev, PCI_D3hot, 0);
4715 pci_enable_wake(pdev, PCI_D3cold, 0);
4716
4717 e1000_reset(adapter);
4718 ew32(WUS, ~0);
4719
4720 return PCI_ERS_RESULT_RECOVERED;
4721}
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731static void e1000_io_resume(struct pci_dev *pdev)
4732{
4733 struct net_device *netdev = pci_get_drvdata(pdev);
4734 struct e1000_adapter *adapter = netdev_priv(netdev);
4735
4736 e1000_init_manageability(adapter);
4737
4738 if (netif_running(netdev)) {
4739 if (e1000_up(adapter)) {
4740 printk("e1000: can't bring device back up after reset\n");
4741 return;
4742 }
4743 }
4744
4745 netif_device_attach(netdev);
4746}
4747
4748
4749