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27
28#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29
30#include <linux/module.h>
31#include <linux/types.h>
32#include <linux/init.h>
33#include <linux/pci.h>
34#include <linux/vmalloc.h>
35#include <linux/pagemap.h>
36#include <linux/delay.h>
37#include <linux/netdevice.h>
38#include <linux/tcp.h>
39#include <linux/ipv6.h>
40#include <linux/slab.h>
41#include <net/checksum.h>
42#include <net/ip6_checksum.h>
43#include <linux/mii.h>
44#include <linux/ethtool.h>
45#include <linux/if_vlan.h>
46#include <linux/prefetch.h>
47
48#include "igbvf.h"
49
50#define DRV_VERSION "2.0.2-k"
51char igbvf_driver_name[] = "igbvf";
52const char igbvf_driver_version[] = DRV_VERSION;
53static const char igbvf_driver_string[] =
54 "Intel(R) Gigabit Virtual Function Network Driver";
55static const char igbvf_copyright[] =
56 "Copyright (c) 2009 - 2012 Intel Corporation.";
57
58#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
59static int debug = -1;
60module_param(debug, int, 0);
61MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
62
63static int igbvf_poll(struct napi_struct *napi, int budget);
64static void igbvf_reset(struct igbvf_adapter *);
65static void igbvf_set_interrupt_capability(struct igbvf_adapter *);
66static void igbvf_reset_interrupt_capability(struct igbvf_adapter *);
67
68static struct igbvf_info igbvf_vf_info = {
69 .mac = e1000_vfadapt,
70 .flags = 0,
71 .pba = 10,
72 .init_ops = e1000_init_function_pointers_vf,
73};
74
75static struct igbvf_info igbvf_i350_vf_info = {
76 .mac = e1000_vfadapt_i350,
77 .flags = 0,
78 .pba = 10,
79 .init_ops = e1000_init_function_pointers_vf,
80};
81
82static const struct igbvf_info *igbvf_info_tbl[] = {
83 [board_vf] = &igbvf_vf_info,
84 [board_i350_vf] = &igbvf_i350_vf_info,
85};
86
87
88
89
90static int igbvf_desc_unused(struct igbvf_ring *ring)
91{
92 if (ring->next_to_clean > ring->next_to_use)
93 return ring->next_to_clean - ring->next_to_use - 1;
94
95 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
96}
97
98
99
100
101
102
103
104
105static void igbvf_receive_skb(struct igbvf_adapter *adapter,
106 struct net_device *netdev,
107 struct sk_buff *skb,
108 u32 status, u16 vlan)
109{
110 u16 vid;
111
112 if (status & E1000_RXD_STAT_VP) {
113 if ((adapter->flags & IGBVF_FLAG_RX_LB_VLAN_BSWAP) &&
114 (status & E1000_RXDEXT_STATERR_LB))
115 vid = be16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
116 else
117 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
118 if (test_bit(vid, adapter->active_vlans))
119 __vlan_hwaccel_put_tag(skb, vid);
120 }
121
122 napi_gro_receive(&adapter->rx_ring->napi, skb);
123}
124
125static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter,
126 u32 status_err, struct sk_buff *skb)
127{
128 skb_checksum_none_assert(skb);
129
130
131 if ((status_err & E1000_RXD_STAT_IXSM) ||
132 (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED))
133 return;
134
135
136 if (status_err &
137 (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
138
139 adapter->hw_csum_err++;
140 return;
141 }
142
143
144 if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
145 skb->ip_summed = CHECKSUM_UNNECESSARY;
146
147 adapter->hw_csum_good++;
148}
149
150
151
152
153
154
155static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
156 int cleaned_count)
157{
158 struct igbvf_adapter *adapter = rx_ring->adapter;
159 struct net_device *netdev = adapter->netdev;
160 struct pci_dev *pdev = adapter->pdev;
161 union e1000_adv_rx_desc *rx_desc;
162 struct igbvf_buffer *buffer_info;
163 struct sk_buff *skb;
164 unsigned int i;
165 int bufsz;
166
167 i = rx_ring->next_to_use;
168 buffer_info = &rx_ring->buffer_info[i];
169
170 if (adapter->rx_ps_hdr_size)
171 bufsz = adapter->rx_ps_hdr_size;
172 else
173 bufsz = adapter->rx_buffer_len;
174
175 while (cleaned_count--) {
176 rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
177
178 if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
179 if (!buffer_info->page) {
180 buffer_info->page = alloc_page(GFP_ATOMIC);
181 if (!buffer_info->page) {
182 adapter->alloc_rx_buff_failed++;
183 goto no_buffers;
184 }
185 buffer_info->page_offset = 0;
186 } else {
187 buffer_info->page_offset ^= PAGE_SIZE / 2;
188 }
189 buffer_info->page_dma =
190 dma_map_page(&pdev->dev, buffer_info->page,
191 buffer_info->page_offset,
192 PAGE_SIZE / 2,
193 DMA_FROM_DEVICE);
194 if (dma_mapping_error(&pdev->dev,
195 buffer_info->page_dma)) {
196 __free_page(buffer_info->page);
197 buffer_info->page = NULL;
198 dev_err(&pdev->dev, "RX DMA map failed\n");
199 break;
200 }
201 }
202
203 if (!buffer_info->skb) {
204 skb = netdev_alloc_skb_ip_align(netdev, bufsz);
205 if (!skb) {
206 adapter->alloc_rx_buff_failed++;
207 goto no_buffers;
208 }
209
210 buffer_info->skb = skb;
211 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
212 bufsz,
213 DMA_FROM_DEVICE);
214 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
215 dev_kfree_skb(buffer_info->skb);
216 buffer_info->skb = NULL;
217 dev_err(&pdev->dev, "RX DMA map failed\n");
218 goto no_buffers;
219 }
220 }
221
222
223 if (adapter->rx_ps_hdr_size) {
224 rx_desc->read.pkt_addr =
225 cpu_to_le64(buffer_info->page_dma);
226 rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
227 } else {
228 rx_desc->read.pkt_addr =
229 cpu_to_le64(buffer_info->dma);
230 rx_desc->read.hdr_addr = 0;
231 }
232
233 i++;
234 if (i == rx_ring->count)
235 i = 0;
236 buffer_info = &rx_ring->buffer_info[i];
237 }
238
239no_buffers:
240 if (rx_ring->next_to_use != i) {
241 rx_ring->next_to_use = i;
242 if (i == 0)
243 i = (rx_ring->count - 1);
244 else
245 i--;
246
247
248
249
250
251 wmb();
252 writel(i, adapter->hw.hw_addr + rx_ring->tail);
253 }
254}
255
256
257
258
259
260
261
262
263static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
264 int *work_done, int work_to_do)
265{
266 struct igbvf_ring *rx_ring = adapter->rx_ring;
267 struct net_device *netdev = adapter->netdev;
268 struct pci_dev *pdev = adapter->pdev;
269 union e1000_adv_rx_desc *rx_desc, *next_rxd;
270 struct igbvf_buffer *buffer_info, *next_buffer;
271 struct sk_buff *skb;
272 bool cleaned = false;
273 int cleaned_count = 0;
274 unsigned int total_bytes = 0, total_packets = 0;
275 unsigned int i;
276 u32 length, hlen, staterr;
277
278 i = rx_ring->next_to_clean;
279 rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
280 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
281
282 while (staterr & E1000_RXD_STAT_DD) {
283 if (*work_done >= work_to_do)
284 break;
285 (*work_done)++;
286 rmb();
287
288 buffer_info = &rx_ring->buffer_info[i];
289
290
291
292
293
294
295 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) &
296 E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
297 if (hlen > adapter->rx_ps_hdr_size)
298 hlen = adapter->rx_ps_hdr_size;
299
300 length = le16_to_cpu(rx_desc->wb.upper.length);
301 cleaned = true;
302 cleaned_count++;
303
304 skb = buffer_info->skb;
305 prefetch(skb->data - NET_IP_ALIGN);
306 buffer_info->skb = NULL;
307 if (!adapter->rx_ps_hdr_size) {
308 dma_unmap_single(&pdev->dev, buffer_info->dma,
309 adapter->rx_buffer_len,
310 DMA_FROM_DEVICE);
311 buffer_info->dma = 0;
312 skb_put(skb, length);
313 goto send_up;
314 }
315
316 if (!skb_shinfo(skb)->nr_frags) {
317 dma_unmap_single(&pdev->dev, buffer_info->dma,
318 adapter->rx_ps_hdr_size,
319 DMA_FROM_DEVICE);
320 skb_put(skb, hlen);
321 }
322
323 if (length) {
324 dma_unmap_page(&pdev->dev, buffer_info->page_dma,
325 PAGE_SIZE / 2,
326 DMA_FROM_DEVICE);
327 buffer_info->page_dma = 0;
328
329 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
330 buffer_info->page,
331 buffer_info->page_offset,
332 length);
333
334 if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
335 (page_count(buffer_info->page) != 1))
336 buffer_info->page = NULL;
337 else
338 get_page(buffer_info->page);
339
340 skb->len += length;
341 skb->data_len += length;
342 skb->truesize += PAGE_SIZE / 2;
343 }
344send_up:
345 i++;
346 if (i == rx_ring->count)
347 i = 0;
348 next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i);
349 prefetch(next_rxd);
350 next_buffer = &rx_ring->buffer_info[i];
351
352 if (!(staterr & E1000_RXD_STAT_EOP)) {
353 buffer_info->skb = next_buffer->skb;
354 buffer_info->dma = next_buffer->dma;
355 next_buffer->skb = skb;
356 next_buffer->dma = 0;
357 goto next_desc;
358 }
359
360 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
361 dev_kfree_skb_irq(skb);
362 goto next_desc;
363 }
364
365 total_bytes += skb->len;
366 total_packets++;
367
368 igbvf_rx_checksum_adv(adapter, staterr, skb);
369
370 skb->protocol = eth_type_trans(skb, netdev);
371
372 igbvf_receive_skb(adapter, netdev, skb, staterr,
373 rx_desc->wb.upper.vlan);
374
375next_desc:
376 rx_desc->wb.upper.status_error = 0;
377
378
379 if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) {
380 igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
381 cleaned_count = 0;
382 }
383
384
385 rx_desc = next_rxd;
386 buffer_info = next_buffer;
387
388 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
389 }
390
391 rx_ring->next_to_clean = i;
392 cleaned_count = igbvf_desc_unused(rx_ring);
393
394 if (cleaned_count)
395 igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
396
397 adapter->total_rx_packets += total_packets;
398 adapter->total_rx_bytes += total_bytes;
399 adapter->net_stats.rx_bytes += total_bytes;
400 adapter->net_stats.rx_packets += total_packets;
401 return cleaned;
402}
403
404static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
405 struct igbvf_buffer *buffer_info)
406{
407 if (buffer_info->dma) {
408 if (buffer_info->mapped_as_page)
409 dma_unmap_page(&adapter->pdev->dev,
410 buffer_info->dma,
411 buffer_info->length,
412 DMA_TO_DEVICE);
413 else
414 dma_unmap_single(&adapter->pdev->dev,
415 buffer_info->dma,
416 buffer_info->length,
417 DMA_TO_DEVICE);
418 buffer_info->dma = 0;
419 }
420 if (buffer_info->skb) {
421 dev_kfree_skb_any(buffer_info->skb);
422 buffer_info->skb = NULL;
423 }
424 buffer_info->time_stamp = 0;
425}
426
427
428
429
430
431
432
433int igbvf_setup_tx_resources(struct igbvf_adapter *adapter,
434 struct igbvf_ring *tx_ring)
435{
436 struct pci_dev *pdev = adapter->pdev;
437 int size;
438
439 size = sizeof(struct igbvf_buffer) * tx_ring->count;
440 tx_ring->buffer_info = vzalloc(size);
441 if (!tx_ring->buffer_info)
442 goto err;
443
444
445 tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
446 tx_ring->size = ALIGN(tx_ring->size, 4096);
447
448 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
449 &tx_ring->dma, GFP_KERNEL);
450
451 if (!tx_ring->desc)
452 goto err;
453
454 tx_ring->adapter = adapter;
455 tx_ring->next_to_use = 0;
456 tx_ring->next_to_clean = 0;
457
458 return 0;
459err:
460 vfree(tx_ring->buffer_info);
461 dev_err(&adapter->pdev->dev,
462 "Unable to allocate memory for the transmit descriptor ring\n");
463 return -ENOMEM;
464}
465
466
467
468
469
470
471
472int igbvf_setup_rx_resources(struct igbvf_adapter *adapter,
473 struct igbvf_ring *rx_ring)
474{
475 struct pci_dev *pdev = adapter->pdev;
476 int size, desc_len;
477
478 size = sizeof(struct igbvf_buffer) * rx_ring->count;
479 rx_ring->buffer_info = vzalloc(size);
480 if (!rx_ring->buffer_info)
481 goto err;
482
483 desc_len = sizeof(union e1000_adv_rx_desc);
484
485
486 rx_ring->size = rx_ring->count * desc_len;
487 rx_ring->size = ALIGN(rx_ring->size, 4096);
488
489 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
490 &rx_ring->dma, GFP_KERNEL);
491
492 if (!rx_ring->desc)
493 goto err;
494
495 rx_ring->next_to_clean = 0;
496 rx_ring->next_to_use = 0;
497
498 rx_ring->adapter = adapter;
499
500 return 0;
501
502err:
503 vfree(rx_ring->buffer_info);
504 rx_ring->buffer_info = NULL;
505 dev_err(&adapter->pdev->dev,
506 "Unable to allocate memory for the receive descriptor ring\n");
507 return -ENOMEM;
508}
509
510
511
512
513
514static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
515{
516 struct igbvf_adapter *adapter = tx_ring->adapter;
517 struct igbvf_buffer *buffer_info;
518 unsigned long size;
519 unsigned int i;
520
521 if (!tx_ring->buffer_info)
522 return;
523
524
525 for (i = 0; i < tx_ring->count; i++) {
526 buffer_info = &tx_ring->buffer_info[i];
527 igbvf_put_txbuf(adapter, buffer_info);
528 }
529
530 size = sizeof(struct igbvf_buffer) * tx_ring->count;
531 memset(tx_ring->buffer_info, 0, size);
532
533
534 memset(tx_ring->desc, 0, tx_ring->size);
535
536 tx_ring->next_to_use = 0;
537 tx_ring->next_to_clean = 0;
538
539 writel(0, adapter->hw.hw_addr + tx_ring->head);
540 writel(0, adapter->hw.hw_addr + tx_ring->tail);
541}
542
543
544
545
546
547
548
549void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
550{
551 struct pci_dev *pdev = tx_ring->adapter->pdev;
552
553 igbvf_clean_tx_ring(tx_ring);
554
555 vfree(tx_ring->buffer_info);
556 tx_ring->buffer_info = NULL;
557
558 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
559 tx_ring->dma);
560
561 tx_ring->desc = NULL;
562}
563
564
565
566
567
568static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring)
569{
570 struct igbvf_adapter *adapter = rx_ring->adapter;
571 struct igbvf_buffer *buffer_info;
572 struct pci_dev *pdev = adapter->pdev;
573 unsigned long size;
574 unsigned int i;
575
576 if (!rx_ring->buffer_info)
577 return;
578
579
580 for (i = 0; i < rx_ring->count; i++) {
581 buffer_info = &rx_ring->buffer_info[i];
582 if (buffer_info->dma) {
583 if (adapter->rx_ps_hdr_size){
584 dma_unmap_single(&pdev->dev, buffer_info->dma,
585 adapter->rx_ps_hdr_size,
586 DMA_FROM_DEVICE);
587 } else {
588 dma_unmap_single(&pdev->dev, buffer_info->dma,
589 adapter->rx_buffer_len,
590 DMA_FROM_DEVICE);
591 }
592 buffer_info->dma = 0;
593 }
594
595 if (buffer_info->skb) {
596 dev_kfree_skb(buffer_info->skb);
597 buffer_info->skb = NULL;
598 }
599
600 if (buffer_info->page) {
601 if (buffer_info->page_dma)
602 dma_unmap_page(&pdev->dev,
603 buffer_info->page_dma,
604 PAGE_SIZE / 2,
605 DMA_FROM_DEVICE);
606 put_page(buffer_info->page);
607 buffer_info->page = NULL;
608 buffer_info->page_dma = 0;
609 buffer_info->page_offset = 0;
610 }
611 }
612
613 size = sizeof(struct igbvf_buffer) * rx_ring->count;
614 memset(rx_ring->buffer_info, 0, size);
615
616
617 memset(rx_ring->desc, 0, rx_ring->size);
618
619 rx_ring->next_to_clean = 0;
620 rx_ring->next_to_use = 0;
621
622 writel(0, adapter->hw.hw_addr + rx_ring->head);
623 writel(0, adapter->hw.hw_addr + rx_ring->tail);
624}
625
626
627
628
629
630
631
632
633void igbvf_free_rx_resources(struct igbvf_ring *rx_ring)
634{
635 struct pci_dev *pdev = rx_ring->adapter->pdev;
636
637 igbvf_clean_rx_ring(rx_ring);
638
639 vfree(rx_ring->buffer_info);
640 rx_ring->buffer_info = NULL;
641
642 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
643 rx_ring->dma);
644 rx_ring->desc = NULL;
645}
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter,
663 enum latency_range itr_setting,
664 int packets, int bytes)
665{
666 enum latency_range retval = itr_setting;
667
668 if (packets == 0)
669 goto update_itr_done;
670
671 switch (itr_setting) {
672 case lowest_latency:
673
674 if (bytes/packets > 8000)
675 retval = bulk_latency;
676 else if ((packets < 5) && (bytes > 512))
677 retval = low_latency;
678 break;
679 case low_latency:
680 if (bytes > 10000) {
681
682 if (bytes/packets > 8000)
683 retval = bulk_latency;
684 else if ((packets < 10) || ((bytes/packets) > 1200))
685 retval = bulk_latency;
686 else if ((packets > 35))
687 retval = lowest_latency;
688 } else if (bytes/packets > 2000) {
689 retval = bulk_latency;
690 } else if (packets <= 2 && bytes < 512) {
691 retval = lowest_latency;
692 }
693 break;
694 case bulk_latency:
695 if (bytes > 25000) {
696 if (packets > 35)
697 retval = low_latency;
698 } else if (bytes < 6000) {
699 retval = low_latency;
700 }
701 break;
702 default:
703 break;
704 }
705
706update_itr_done:
707 return retval;
708}
709
710static int igbvf_range_to_itr(enum latency_range current_range)
711{
712 int new_itr;
713
714 switch (current_range) {
715
716 case lowest_latency:
717 new_itr = IGBVF_70K_ITR;
718 break;
719 case low_latency:
720 new_itr = IGBVF_20K_ITR;
721 break;
722 case bulk_latency:
723 new_itr = IGBVF_4K_ITR;
724 break;
725 default:
726 new_itr = IGBVF_START_ITR;
727 break;
728 }
729 return new_itr;
730}
731
732static void igbvf_set_itr(struct igbvf_adapter *adapter)
733{
734 u32 new_itr;
735
736 adapter->tx_ring->itr_range =
737 igbvf_update_itr(adapter,
738 adapter->tx_ring->itr_val,
739 adapter->total_tx_packets,
740 adapter->total_tx_bytes);
741
742
743 if (adapter->requested_itr == 3 &&
744 adapter->tx_ring->itr_range == lowest_latency)
745 adapter->tx_ring->itr_range = low_latency;
746
747 new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range);
748
749
750 if (new_itr != adapter->tx_ring->itr_val) {
751 u32 current_itr = adapter->tx_ring->itr_val;
752
753
754
755
756
757 new_itr = new_itr > current_itr ?
758 min(current_itr + (new_itr >> 2), new_itr) :
759 new_itr;
760 adapter->tx_ring->itr_val = new_itr;
761
762 adapter->tx_ring->set_itr = 1;
763 }
764
765 adapter->rx_ring->itr_range =
766 igbvf_update_itr(adapter, adapter->rx_ring->itr_val,
767 adapter->total_rx_packets,
768 adapter->total_rx_bytes);
769 if (adapter->requested_itr == 3 &&
770 adapter->rx_ring->itr_range == lowest_latency)
771 adapter->rx_ring->itr_range = low_latency;
772
773 new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range);
774
775 if (new_itr != adapter->rx_ring->itr_val) {
776 u32 current_itr = adapter->rx_ring->itr_val;
777 new_itr = new_itr > current_itr ?
778 min(current_itr + (new_itr >> 2), new_itr) :
779 new_itr;
780 adapter->rx_ring->itr_val = new_itr;
781
782 adapter->rx_ring->set_itr = 1;
783 }
784}
785
786
787
788
789
790
791
792static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
793{
794 struct igbvf_adapter *adapter = tx_ring->adapter;
795 struct net_device *netdev = adapter->netdev;
796 struct igbvf_buffer *buffer_info;
797 struct sk_buff *skb;
798 union e1000_adv_tx_desc *tx_desc, *eop_desc;
799 unsigned int total_bytes = 0, total_packets = 0;
800 unsigned int i, eop, count = 0;
801 bool cleaned = false;
802
803 i = tx_ring->next_to_clean;
804 eop = tx_ring->buffer_info[i].next_to_watch;
805 eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
806
807 while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) &&
808 (count < tx_ring->count)) {
809 rmb();
810 for (cleaned = false; !cleaned; count++) {
811 tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
812 buffer_info = &tx_ring->buffer_info[i];
813 cleaned = (i == eop);
814 skb = buffer_info->skb;
815
816 if (skb) {
817 unsigned int segs, bytecount;
818
819
820 segs = skb_shinfo(skb)->gso_segs ?: 1;
821
822 bytecount = ((segs - 1) * skb_headlen(skb)) +
823 skb->len;
824 total_packets += segs;
825 total_bytes += bytecount;
826 }
827
828 igbvf_put_txbuf(adapter, buffer_info);
829 tx_desc->wb.status = 0;
830
831 i++;
832 if (i == tx_ring->count)
833 i = 0;
834 }
835 eop = tx_ring->buffer_info[i].next_to_watch;
836 eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
837 }
838
839 tx_ring->next_to_clean = i;
840
841 if (unlikely(count &&
842 netif_carrier_ok(netdev) &&
843 igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
844
845
846
847 smp_mb();
848 if (netif_queue_stopped(netdev) &&
849 !(test_bit(__IGBVF_DOWN, &adapter->state))) {
850 netif_wake_queue(netdev);
851 ++adapter->restart_queue;
852 }
853 }
854
855 adapter->net_stats.tx_bytes += total_bytes;
856 adapter->net_stats.tx_packets += total_packets;
857 return count < tx_ring->count;
858}
859
860static irqreturn_t igbvf_msix_other(int irq, void *data)
861{
862 struct net_device *netdev = data;
863 struct igbvf_adapter *adapter = netdev_priv(netdev);
864 struct e1000_hw *hw = &adapter->hw;
865
866 adapter->int_counter1++;
867
868 netif_carrier_off(netdev);
869 hw->mac.get_link_status = 1;
870 if (!test_bit(__IGBVF_DOWN, &adapter->state))
871 mod_timer(&adapter->watchdog_timer, jiffies + 1);
872
873 ew32(EIMS, adapter->eims_other);
874
875 return IRQ_HANDLED;
876}
877
878static irqreturn_t igbvf_intr_msix_tx(int irq, void *data)
879{
880 struct net_device *netdev = data;
881 struct igbvf_adapter *adapter = netdev_priv(netdev);
882 struct e1000_hw *hw = &adapter->hw;
883 struct igbvf_ring *tx_ring = adapter->tx_ring;
884
885 if (tx_ring->set_itr) {
886 writel(tx_ring->itr_val,
887 adapter->hw.hw_addr + tx_ring->itr_register);
888 adapter->tx_ring->set_itr = 0;
889 }
890
891 adapter->total_tx_bytes = 0;
892 adapter->total_tx_packets = 0;
893
894
895
896 if (!igbvf_clean_tx_irq(tx_ring))
897
898 ew32(EICS, tx_ring->eims_value);
899 else
900 ew32(EIMS, tx_ring->eims_value);
901
902 return IRQ_HANDLED;
903}
904
905static irqreturn_t igbvf_intr_msix_rx(int irq, void *data)
906{
907 struct net_device *netdev = data;
908 struct igbvf_adapter *adapter = netdev_priv(netdev);
909
910 adapter->int_counter0++;
911
912
913
914
915 if (adapter->rx_ring->set_itr) {
916 writel(adapter->rx_ring->itr_val,
917 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
918 adapter->rx_ring->set_itr = 0;
919 }
920
921 if (napi_schedule_prep(&adapter->rx_ring->napi)) {
922 adapter->total_rx_bytes = 0;
923 adapter->total_rx_packets = 0;
924 __napi_schedule(&adapter->rx_ring->napi);
925 }
926
927 return IRQ_HANDLED;
928}
929
930#define IGBVF_NO_QUEUE -1
931
932static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue,
933 int tx_queue, int msix_vector)
934{
935 struct e1000_hw *hw = &adapter->hw;
936 u32 ivar, index;
937
938
939
940
941
942 if (rx_queue > IGBVF_NO_QUEUE) {
943 index = (rx_queue >> 1);
944 ivar = array_er32(IVAR0, index);
945 if (rx_queue & 0x1) {
946
947 ivar = ivar & 0xFF00FFFF;
948 ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
949 } else {
950
951 ivar = ivar & 0xFFFFFF00;
952 ivar |= msix_vector | E1000_IVAR_VALID;
953 }
954 adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector;
955 array_ew32(IVAR0, index, ivar);
956 }
957 if (tx_queue > IGBVF_NO_QUEUE) {
958 index = (tx_queue >> 1);
959 ivar = array_er32(IVAR0, index);
960 if (tx_queue & 0x1) {
961
962 ivar = ivar & 0x00FFFFFF;
963 ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
964 } else {
965
966 ivar = ivar & 0xFFFF00FF;
967 ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
968 }
969 adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector;
970 array_ew32(IVAR0, index, ivar);
971 }
972}
973
974
975
976
977
978
979
980static void igbvf_configure_msix(struct igbvf_adapter *adapter)
981{
982 u32 tmp;
983 struct e1000_hw *hw = &adapter->hw;
984 struct igbvf_ring *tx_ring = adapter->tx_ring;
985 struct igbvf_ring *rx_ring = adapter->rx_ring;
986 int vector = 0;
987
988 adapter->eims_enable_mask = 0;
989
990 igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++);
991 adapter->eims_enable_mask |= tx_ring->eims_value;
992 writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register);
993 igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++);
994 adapter->eims_enable_mask |= rx_ring->eims_value;
995 writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register);
996
997
998
999 tmp = (vector++ | E1000_IVAR_VALID);
1000
1001 ew32(IVAR_MISC, tmp);
1002
1003 adapter->eims_enable_mask = (1 << (vector)) - 1;
1004 adapter->eims_other = 1 << (vector - 1);
1005 e1e_flush();
1006}
1007
1008static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter)
1009{
1010 if (adapter->msix_entries) {
1011 pci_disable_msix(adapter->pdev);
1012 kfree(adapter->msix_entries);
1013 adapter->msix_entries = NULL;
1014 }
1015}
1016
1017
1018
1019
1020
1021
1022
1023static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter)
1024{
1025 int err = -ENOMEM;
1026 int i;
1027
1028
1029 adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry),
1030 GFP_KERNEL);
1031 if (adapter->msix_entries) {
1032 for (i = 0; i < 3; i++)
1033 adapter->msix_entries[i].entry = i;
1034
1035 err = pci_enable_msix(adapter->pdev,
1036 adapter->msix_entries, 3);
1037 }
1038
1039 if (err) {
1040
1041 dev_err(&adapter->pdev->dev,
1042 "Failed to initialize MSI-X interrupts.\n");
1043 igbvf_reset_interrupt_capability(adapter);
1044 }
1045}
1046
1047
1048
1049
1050
1051
1052
1053static int igbvf_request_msix(struct igbvf_adapter *adapter)
1054{
1055 struct net_device *netdev = adapter->netdev;
1056 int err = 0, vector = 0;
1057
1058 if (strlen(netdev->name) < (IFNAMSIZ - 5)) {
1059 sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1060 sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
1061 } else {
1062 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1063 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1064 }
1065
1066 err = request_irq(adapter->msix_entries[vector].vector,
1067 igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
1068 netdev);
1069 if (err)
1070 goto out;
1071
1072 adapter->tx_ring->itr_register = E1000_EITR(vector);
1073 adapter->tx_ring->itr_val = adapter->current_itr;
1074 vector++;
1075
1076 err = request_irq(adapter->msix_entries[vector].vector,
1077 igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
1078 netdev);
1079 if (err)
1080 goto out;
1081
1082 adapter->rx_ring->itr_register = E1000_EITR(vector);
1083 adapter->rx_ring->itr_val = adapter->current_itr;
1084 vector++;
1085
1086 err = request_irq(adapter->msix_entries[vector].vector,
1087 igbvf_msix_other, 0, netdev->name, netdev);
1088 if (err)
1089 goto out;
1090
1091 igbvf_configure_msix(adapter);
1092 return 0;
1093out:
1094 return err;
1095}
1096
1097
1098
1099
1100
1101static int igbvf_alloc_queues(struct igbvf_adapter *adapter)
1102{
1103 struct net_device *netdev = adapter->netdev;
1104
1105 adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
1106 if (!adapter->tx_ring)
1107 return -ENOMEM;
1108
1109 adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
1110 if (!adapter->rx_ring) {
1111 kfree(adapter->tx_ring);
1112 return -ENOMEM;
1113 }
1114
1115 netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64);
1116
1117 return 0;
1118}
1119
1120
1121
1122
1123
1124
1125
1126static int igbvf_request_irq(struct igbvf_adapter *adapter)
1127{
1128 int err = -1;
1129
1130
1131 if (adapter->msix_entries)
1132 err = igbvf_request_msix(adapter);
1133
1134 if (!err)
1135 return err;
1136
1137 dev_err(&adapter->pdev->dev,
1138 "Unable to allocate interrupt, Error: %d\n", err);
1139
1140 return err;
1141}
1142
1143static void igbvf_free_irq(struct igbvf_adapter *adapter)
1144{
1145 struct net_device *netdev = adapter->netdev;
1146 int vector;
1147
1148 if (adapter->msix_entries) {
1149 for (vector = 0; vector < 3; vector++)
1150 free_irq(adapter->msix_entries[vector].vector, netdev);
1151 }
1152}
1153
1154
1155
1156
1157static void igbvf_irq_disable(struct igbvf_adapter *adapter)
1158{
1159 struct e1000_hw *hw = &adapter->hw;
1160
1161 ew32(EIMC, ~0);
1162
1163 if (adapter->msix_entries)
1164 ew32(EIAC, 0);
1165}
1166
1167
1168
1169
1170static void igbvf_irq_enable(struct igbvf_adapter *adapter)
1171{
1172 struct e1000_hw *hw = &adapter->hw;
1173
1174 ew32(EIAC, adapter->eims_enable_mask);
1175 ew32(EIAM, adapter->eims_enable_mask);
1176 ew32(EIMS, adapter->eims_enable_mask);
1177}
1178
1179
1180
1181
1182
1183
1184static int igbvf_poll(struct napi_struct *napi, int budget)
1185{
1186 struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi);
1187 struct igbvf_adapter *adapter = rx_ring->adapter;
1188 struct e1000_hw *hw = &adapter->hw;
1189 int work_done = 0;
1190
1191 igbvf_clean_rx_irq(adapter, &work_done, budget);
1192
1193
1194 if (work_done < budget) {
1195 napi_complete(napi);
1196
1197 if (adapter->requested_itr & 3)
1198 igbvf_set_itr(adapter);
1199
1200 if (!test_bit(__IGBVF_DOWN, &adapter->state))
1201 ew32(EIMS, adapter->rx_ring->eims_value);
1202 }
1203
1204 return work_done;
1205}
1206
1207
1208
1209
1210
1211
1212
1213static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
1214{
1215 int max_frame_size;
1216 struct e1000_hw *hw = &adapter->hw;
1217
1218 max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE;
1219 e1000_rlpml_set_vf(hw, max_frame_size);
1220}
1221
1222static int igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1223{
1224 struct igbvf_adapter *adapter = netdev_priv(netdev);
1225 struct e1000_hw *hw = &adapter->hw;
1226
1227 if (hw->mac.ops.set_vfta(hw, vid, true)) {
1228 dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
1229 return -EINVAL;
1230 }
1231 set_bit(vid, adapter->active_vlans);
1232 return 0;
1233}
1234
1235static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1236{
1237 struct igbvf_adapter *adapter = netdev_priv(netdev);
1238 struct e1000_hw *hw = &adapter->hw;
1239
1240 if (hw->mac.ops.set_vfta(hw, vid, false)) {
1241 dev_err(&adapter->pdev->dev,
1242 "Failed to remove vlan id %d\n", vid);
1243 return -EINVAL;
1244 }
1245 clear_bit(vid, adapter->active_vlans);
1246 return 0;
1247}
1248
1249static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
1250{
1251 u16 vid;
1252
1253 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
1254 igbvf_vlan_rx_add_vid(adapter->netdev, vid);
1255}
1256
1257
1258
1259
1260
1261
1262
1263static void igbvf_configure_tx(struct igbvf_adapter *adapter)
1264{
1265 struct e1000_hw *hw = &adapter->hw;
1266 struct igbvf_ring *tx_ring = adapter->tx_ring;
1267 u64 tdba;
1268 u32 txdctl, dca_txctrl;
1269
1270
1271 txdctl = er32(TXDCTL(0));
1272 ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
1273 e1e_flush();
1274 msleep(10);
1275
1276
1277 ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
1278 tdba = tx_ring->dma;
1279 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
1280 ew32(TDBAH(0), (tdba >> 32));
1281 ew32(TDH(0), 0);
1282 ew32(TDT(0), 0);
1283 tx_ring->head = E1000_TDH(0);
1284 tx_ring->tail = E1000_TDT(0);
1285
1286
1287
1288
1289
1290 dca_txctrl = er32(DCA_TXCTRL(0));
1291 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1292 ew32(DCA_TXCTRL(0), dca_txctrl);
1293
1294
1295 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1296 ew32(TXDCTL(0), txdctl);
1297
1298
1299 adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS;
1300
1301
1302 adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS;
1303}
1304
1305
1306
1307
1308
1309static void igbvf_setup_srrctl(struct igbvf_adapter *adapter)
1310{
1311 struct e1000_hw *hw = &adapter->hw;
1312 u32 srrctl = 0;
1313
1314 srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK |
1315 E1000_SRRCTL_BSIZEHDR_MASK |
1316 E1000_SRRCTL_BSIZEPKT_MASK);
1317
1318
1319 srrctl |= E1000_SRRCTL_DROP_EN;
1320
1321
1322 srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >>
1323 E1000_SRRCTL_BSIZEPKT_SHIFT;
1324
1325 if (adapter->rx_buffer_len < 2048) {
1326 adapter->rx_ps_hdr_size = 0;
1327 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
1328 } else {
1329 adapter->rx_ps_hdr_size = 128;
1330 srrctl |= adapter->rx_ps_hdr_size <<
1331 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
1332 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
1333 }
1334
1335 ew32(SRRCTL(0), srrctl);
1336}
1337
1338
1339
1340
1341
1342
1343
1344static void igbvf_configure_rx(struct igbvf_adapter *adapter)
1345{
1346 struct e1000_hw *hw = &adapter->hw;
1347 struct igbvf_ring *rx_ring = adapter->rx_ring;
1348 u64 rdba;
1349 u32 rdlen, rxdctl;
1350
1351
1352 rxdctl = er32(RXDCTL(0));
1353 ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
1354 e1e_flush();
1355 msleep(10);
1356
1357 rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc);
1358
1359
1360
1361
1362
1363 rdba = rx_ring->dma;
1364 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
1365 ew32(RDBAH(0), (rdba >> 32));
1366 ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc));
1367 rx_ring->head = E1000_RDH(0);
1368 rx_ring->tail = E1000_RDT(0);
1369 ew32(RDH(0), 0);
1370 ew32(RDT(0), 0);
1371
1372 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
1373 rxdctl &= 0xFFF00000;
1374 rxdctl |= IGBVF_RX_PTHRESH;
1375 rxdctl |= IGBVF_RX_HTHRESH << 8;
1376 rxdctl |= IGBVF_RX_WTHRESH << 16;
1377
1378 igbvf_set_rlpml(adapter);
1379
1380
1381 ew32(RXDCTL(0), rxdctl);
1382}
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393static void igbvf_set_multi(struct net_device *netdev)
1394{
1395 struct igbvf_adapter *adapter = netdev_priv(netdev);
1396 struct e1000_hw *hw = &adapter->hw;
1397 struct netdev_hw_addr *ha;
1398 u8 *mta_list = NULL;
1399 int i;
1400
1401 if (!netdev_mc_empty(netdev)) {
1402 mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
1403 if (!mta_list) {
1404 dev_err(&adapter->pdev->dev,
1405 "failed to allocate multicast filter list\n");
1406 return;
1407 }
1408 }
1409
1410
1411 i = 0;
1412 netdev_for_each_mc_addr(ha, netdev)
1413 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
1414
1415 hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0);
1416 kfree(mta_list);
1417}
1418
1419
1420
1421
1422
1423static void igbvf_configure(struct igbvf_adapter *adapter)
1424{
1425 igbvf_set_multi(adapter->netdev);
1426
1427 igbvf_restore_vlan(adapter);
1428
1429 igbvf_configure_tx(adapter);
1430 igbvf_setup_srrctl(adapter);
1431 igbvf_configure_rx(adapter);
1432 igbvf_alloc_rx_buffers(adapter->rx_ring,
1433 igbvf_desc_unused(adapter->rx_ring));
1434}
1435
1436
1437
1438
1439
1440
1441
1442
1443static void igbvf_reset(struct igbvf_adapter *adapter)
1444{
1445 struct e1000_mac_info *mac = &adapter->hw.mac;
1446 struct net_device *netdev = adapter->netdev;
1447 struct e1000_hw *hw = &adapter->hw;
1448
1449
1450 if (mac->ops.reset_hw(hw))
1451 dev_err(&adapter->pdev->dev, "PF still resetting\n");
1452
1453 mac->ops.init_hw(hw);
1454
1455 if (is_valid_ether_addr(adapter->hw.mac.addr)) {
1456 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
1457 netdev->addr_len);
1458 memcpy(netdev->perm_addr, adapter->hw.mac.addr,
1459 netdev->addr_len);
1460 }
1461
1462 adapter->last_reset = jiffies;
1463}
1464
1465int igbvf_up(struct igbvf_adapter *adapter)
1466{
1467 struct e1000_hw *hw = &adapter->hw;
1468
1469
1470 igbvf_configure(adapter);
1471
1472 clear_bit(__IGBVF_DOWN, &adapter->state);
1473
1474 napi_enable(&adapter->rx_ring->napi);
1475 if (adapter->msix_entries)
1476 igbvf_configure_msix(adapter);
1477
1478
1479 er32(EICR);
1480 igbvf_irq_enable(adapter);
1481
1482
1483 hw->mac.get_link_status = 1;
1484 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1485
1486
1487 return 0;
1488}
1489
1490void igbvf_down(struct igbvf_adapter *adapter)
1491{
1492 struct net_device *netdev = adapter->netdev;
1493 struct e1000_hw *hw = &adapter->hw;
1494 u32 rxdctl, txdctl;
1495
1496
1497
1498
1499
1500 set_bit(__IGBVF_DOWN, &adapter->state);
1501
1502
1503 rxdctl = er32(RXDCTL(0));
1504 ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
1505
1506 netif_stop_queue(netdev);
1507
1508
1509 txdctl = er32(TXDCTL(0));
1510 ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
1511
1512
1513 e1e_flush();
1514 msleep(10);
1515
1516 napi_disable(&adapter->rx_ring->napi);
1517
1518 igbvf_irq_disable(adapter);
1519
1520 del_timer_sync(&adapter->watchdog_timer);
1521
1522 netif_carrier_off(netdev);
1523
1524
1525 igbvf_update_stats(adapter);
1526
1527 adapter->link_speed = 0;
1528 adapter->link_duplex = 0;
1529
1530 igbvf_reset(adapter);
1531 igbvf_clean_tx_ring(adapter->tx_ring);
1532 igbvf_clean_rx_ring(adapter->rx_ring);
1533}
1534
1535void igbvf_reinit_locked(struct igbvf_adapter *adapter)
1536{
1537 might_sleep();
1538 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
1539 msleep(1);
1540 igbvf_down(adapter);
1541 igbvf_up(adapter);
1542 clear_bit(__IGBVF_RESETTING, &adapter->state);
1543}
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553static int igbvf_sw_init(struct igbvf_adapter *adapter)
1554{
1555 struct net_device *netdev = adapter->netdev;
1556 s32 rc;
1557
1558 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
1559 adapter->rx_ps_hdr_size = 0;
1560 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
1561 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
1562
1563 adapter->tx_int_delay = 8;
1564 adapter->tx_abs_int_delay = 32;
1565 adapter->rx_int_delay = 0;
1566 adapter->rx_abs_int_delay = 8;
1567 adapter->requested_itr = 3;
1568 adapter->current_itr = IGBVF_START_ITR;
1569
1570
1571 adapter->ei->init_ops(&adapter->hw);
1572
1573 rc = adapter->hw.mac.ops.init_params(&adapter->hw);
1574 if (rc)
1575 return rc;
1576
1577 rc = adapter->hw.mbx.ops.init_params(&adapter->hw);
1578 if (rc)
1579 return rc;
1580
1581 igbvf_set_interrupt_capability(adapter);
1582
1583 if (igbvf_alloc_queues(adapter))
1584 return -ENOMEM;
1585
1586 spin_lock_init(&adapter->tx_queue_lock);
1587
1588
1589 igbvf_irq_disable(adapter);
1590
1591 spin_lock_init(&adapter->stats_lock);
1592
1593 set_bit(__IGBVF_DOWN, &adapter->state);
1594 return 0;
1595}
1596
1597static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter)
1598{
1599 struct e1000_hw *hw = &adapter->hw;
1600
1601 adapter->stats.last_gprc = er32(VFGPRC);
1602 adapter->stats.last_gorc = er32(VFGORC);
1603 adapter->stats.last_gptc = er32(VFGPTC);
1604 adapter->stats.last_gotc = er32(VFGOTC);
1605 adapter->stats.last_mprc = er32(VFMPRC);
1606 adapter->stats.last_gotlbc = er32(VFGOTLBC);
1607 adapter->stats.last_gptlbc = er32(VFGPTLBC);
1608 adapter->stats.last_gorlbc = er32(VFGORLBC);
1609 adapter->stats.last_gprlbc = er32(VFGPRLBC);
1610
1611 adapter->stats.base_gprc = er32(VFGPRC);
1612 adapter->stats.base_gorc = er32(VFGORC);
1613 adapter->stats.base_gptc = er32(VFGPTC);
1614 adapter->stats.base_gotc = er32(VFGOTC);
1615 adapter->stats.base_mprc = er32(VFMPRC);
1616 adapter->stats.base_gotlbc = er32(VFGOTLBC);
1617 adapter->stats.base_gptlbc = er32(VFGPTLBC);
1618 adapter->stats.base_gorlbc = er32(VFGORLBC);
1619 adapter->stats.base_gprlbc = er32(VFGPRLBC);
1620}
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634static int igbvf_open(struct net_device *netdev)
1635{
1636 struct igbvf_adapter *adapter = netdev_priv(netdev);
1637 struct e1000_hw *hw = &adapter->hw;
1638 int err;
1639
1640
1641 if (test_bit(__IGBVF_TESTING, &adapter->state))
1642 return -EBUSY;
1643
1644
1645 err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
1646 if (err)
1647 goto err_setup_tx;
1648
1649
1650 err = igbvf_setup_rx_resources(adapter, adapter->rx_ring);
1651 if (err)
1652 goto err_setup_rx;
1653
1654
1655
1656
1657
1658
1659
1660 igbvf_configure(adapter);
1661
1662 err = igbvf_request_irq(adapter);
1663 if (err)
1664 goto err_req_irq;
1665
1666
1667 clear_bit(__IGBVF_DOWN, &adapter->state);
1668
1669 napi_enable(&adapter->rx_ring->napi);
1670
1671
1672 er32(EICR);
1673
1674 igbvf_irq_enable(adapter);
1675
1676
1677 hw->mac.get_link_status = 1;
1678 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1679
1680 return 0;
1681
1682err_req_irq:
1683 igbvf_free_rx_resources(adapter->rx_ring);
1684err_setup_rx:
1685 igbvf_free_tx_resources(adapter->tx_ring);
1686err_setup_tx:
1687 igbvf_reset(adapter);
1688
1689 return err;
1690}
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703static int igbvf_close(struct net_device *netdev)
1704{
1705 struct igbvf_adapter *adapter = netdev_priv(netdev);
1706
1707 WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
1708 igbvf_down(adapter);
1709
1710 igbvf_free_irq(adapter);
1711
1712 igbvf_free_tx_resources(adapter->tx_ring);
1713 igbvf_free_rx_resources(adapter->rx_ring);
1714
1715 return 0;
1716}
1717
1718
1719
1720
1721
1722
1723
1724static int igbvf_set_mac(struct net_device *netdev, void *p)
1725{
1726 struct igbvf_adapter *adapter = netdev_priv(netdev);
1727 struct e1000_hw *hw = &adapter->hw;
1728 struct sockaddr *addr = p;
1729
1730 if (!is_valid_ether_addr(addr->sa_data))
1731 return -EADDRNOTAVAIL;
1732
1733 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
1734
1735 hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
1736
1737 if (memcmp(addr->sa_data, hw->mac.addr, 6))
1738 return -EADDRNOTAVAIL;
1739
1740 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1741 netdev->addr_assign_type &= ~NET_ADDR_RANDOM;
1742
1743 return 0;
1744}
1745
1746#define UPDATE_VF_COUNTER(reg, name) \
1747 { \
1748 u32 current_counter = er32(reg); \
1749 if (current_counter < adapter->stats.last_##name) \
1750 adapter->stats.name += 0x100000000LL; \
1751 adapter->stats.last_##name = current_counter; \
1752 adapter->stats.name &= 0xFFFFFFFF00000000LL; \
1753 adapter->stats.name |= current_counter; \
1754 }
1755
1756
1757
1758
1759
1760void igbvf_update_stats(struct igbvf_adapter *adapter)
1761{
1762 struct e1000_hw *hw = &adapter->hw;
1763 struct pci_dev *pdev = adapter->pdev;
1764
1765
1766
1767
1768
1769 if (adapter->link_speed == 0)
1770 return;
1771
1772 if (test_bit(__IGBVF_RESETTING, &adapter->state))
1773 return;
1774
1775 if (pci_channel_offline(pdev))
1776 return;
1777
1778 UPDATE_VF_COUNTER(VFGPRC, gprc);
1779 UPDATE_VF_COUNTER(VFGORC, gorc);
1780 UPDATE_VF_COUNTER(VFGPTC, gptc);
1781 UPDATE_VF_COUNTER(VFGOTC, gotc);
1782 UPDATE_VF_COUNTER(VFMPRC, mprc);
1783 UPDATE_VF_COUNTER(VFGOTLBC, gotlbc);
1784 UPDATE_VF_COUNTER(VFGPTLBC, gptlbc);
1785 UPDATE_VF_COUNTER(VFGORLBC, gorlbc);
1786 UPDATE_VF_COUNTER(VFGPRLBC, gprlbc);
1787
1788
1789 adapter->net_stats.multicast = adapter->stats.mprc;
1790}
1791
1792static void igbvf_print_link_info(struct igbvf_adapter *adapter)
1793{
1794 dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n",
1795 adapter->link_speed,
1796 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half");
1797}
1798
1799static bool igbvf_has_link(struct igbvf_adapter *adapter)
1800{
1801 struct e1000_hw *hw = &adapter->hw;
1802 s32 ret_val = E1000_SUCCESS;
1803 bool link_active;
1804
1805
1806 if (test_bit(__IGBVF_DOWN, &adapter->state))
1807 return false;
1808
1809 ret_val = hw->mac.ops.check_for_link(hw);
1810 link_active = !hw->mac.get_link_status;
1811
1812
1813 if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ)))
1814 schedule_work(&adapter->reset_task);
1815
1816 return link_active;
1817}
1818
1819
1820
1821
1822
1823static void igbvf_watchdog(unsigned long data)
1824{
1825 struct igbvf_adapter *adapter = (struct igbvf_adapter *) data;
1826
1827
1828 schedule_work(&adapter->watchdog_task);
1829}
1830
1831static void igbvf_watchdog_task(struct work_struct *work)
1832{
1833 struct igbvf_adapter *adapter = container_of(work,
1834 struct igbvf_adapter,
1835 watchdog_task);
1836 struct net_device *netdev = adapter->netdev;
1837 struct e1000_mac_info *mac = &adapter->hw.mac;
1838 struct igbvf_ring *tx_ring = adapter->tx_ring;
1839 struct e1000_hw *hw = &adapter->hw;
1840 u32 link;
1841 int tx_pending = 0;
1842
1843 link = igbvf_has_link(adapter);
1844
1845 if (link) {
1846 if (!netif_carrier_ok(netdev)) {
1847 mac->ops.get_link_up_info(&adapter->hw,
1848 &adapter->link_speed,
1849 &adapter->link_duplex);
1850 igbvf_print_link_info(adapter);
1851
1852 netif_carrier_on(netdev);
1853 netif_wake_queue(netdev);
1854 }
1855 } else {
1856 if (netif_carrier_ok(netdev)) {
1857 adapter->link_speed = 0;
1858 adapter->link_duplex = 0;
1859 dev_info(&adapter->pdev->dev, "Link is Down\n");
1860 netif_carrier_off(netdev);
1861 netif_stop_queue(netdev);
1862 }
1863 }
1864
1865 if (netif_carrier_ok(netdev)) {
1866 igbvf_update_stats(adapter);
1867 } else {
1868 tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
1869 tx_ring->count);
1870 if (tx_pending) {
1871
1872
1873
1874
1875
1876
1877 adapter->tx_timeout_count++;
1878 schedule_work(&adapter->reset_task);
1879 }
1880 }
1881
1882
1883 ew32(EICS, adapter->rx_ring->eims_value);
1884
1885
1886 if (!test_bit(__IGBVF_DOWN, &adapter->state))
1887 mod_timer(&adapter->watchdog_timer,
1888 round_jiffies(jiffies + (2 * HZ)));
1889}
1890
1891#define IGBVF_TX_FLAGS_CSUM 0x00000001
1892#define IGBVF_TX_FLAGS_VLAN 0x00000002
1893#define IGBVF_TX_FLAGS_TSO 0x00000004
1894#define IGBVF_TX_FLAGS_IPV4 0x00000008
1895#define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000
1896#define IGBVF_TX_FLAGS_VLAN_SHIFT 16
1897
1898static int igbvf_tso(struct igbvf_adapter *adapter,
1899 struct igbvf_ring *tx_ring,
1900 struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
1901{
1902 struct e1000_adv_tx_context_desc *context_desc;
1903 unsigned int i;
1904 int err;
1905 struct igbvf_buffer *buffer_info;
1906 u32 info = 0, tu_cmd = 0;
1907 u32 mss_l4len_idx, l4len;
1908 *hdr_len = 0;
1909
1910 if (skb_header_cloned(skb)) {
1911 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1912 if (err) {
1913 dev_err(&adapter->pdev->dev,
1914 "igbvf_tso returning an error\n");
1915 return err;
1916 }
1917 }
1918
1919 l4len = tcp_hdrlen(skb);
1920 *hdr_len += l4len;
1921
1922 if (skb->protocol == htons(ETH_P_IP)) {
1923 struct iphdr *iph = ip_hdr(skb);
1924 iph->tot_len = 0;
1925 iph->check = 0;
1926 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1927 iph->daddr, 0,
1928 IPPROTO_TCP,
1929 0);
1930 } else if (skb_is_gso_v6(skb)) {
1931 ipv6_hdr(skb)->payload_len = 0;
1932 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
1933 &ipv6_hdr(skb)->daddr,
1934 0, IPPROTO_TCP, 0);
1935 }
1936
1937 i = tx_ring->next_to_use;
1938
1939 buffer_info = &tx_ring->buffer_info[i];
1940 context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
1941
1942 if (tx_flags & IGBVF_TX_FLAGS_VLAN)
1943 info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
1944 info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
1945 *hdr_len += skb_network_offset(skb);
1946 info |= (skb_transport_header(skb) - skb_network_header(skb));
1947 *hdr_len += (skb_transport_header(skb) - skb_network_header(skb));
1948 context_desc->vlan_macip_lens = cpu_to_le32(info);
1949
1950
1951 tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
1952
1953 if (skb->protocol == htons(ETH_P_IP))
1954 tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
1955 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
1956
1957 context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
1958
1959
1960 mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
1961 mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
1962
1963 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
1964 context_desc->seqnum_seed = 0;
1965
1966 buffer_info->time_stamp = jiffies;
1967 buffer_info->next_to_watch = i;
1968 buffer_info->dma = 0;
1969 i++;
1970 if (i == tx_ring->count)
1971 i = 0;
1972
1973 tx_ring->next_to_use = i;
1974
1975 return true;
1976}
1977
1978static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter,
1979 struct igbvf_ring *tx_ring,
1980 struct sk_buff *skb, u32 tx_flags)
1981{
1982 struct e1000_adv_tx_context_desc *context_desc;
1983 unsigned int i;
1984 struct igbvf_buffer *buffer_info;
1985 u32 info = 0, tu_cmd = 0;
1986
1987 if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
1988 (tx_flags & IGBVF_TX_FLAGS_VLAN)) {
1989 i = tx_ring->next_to_use;
1990 buffer_info = &tx_ring->buffer_info[i];
1991 context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
1992
1993 if (tx_flags & IGBVF_TX_FLAGS_VLAN)
1994 info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
1995
1996 info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
1997 if (skb->ip_summed == CHECKSUM_PARTIAL)
1998 info |= (skb_transport_header(skb) -
1999 skb_network_header(skb));
2000
2001
2002 context_desc->vlan_macip_lens = cpu_to_le32(info);
2003
2004 tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
2005
2006 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2007 switch (skb->protocol) {
2008 case __constant_htons(ETH_P_IP):
2009 tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
2010 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2011 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
2012 break;
2013 case __constant_htons(ETH_P_IPV6):
2014 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2015 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
2016 break;
2017 default:
2018 break;
2019 }
2020 }
2021
2022 context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
2023 context_desc->seqnum_seed = 0;
2024 context_desc->mss_l4len_idx = 0;
2025
2026 buffer_info->time_stamp = jiffies;
2027 buffer_info->next_to_watch = i;
2028 buffer_info->dma = 0;
2029 i++;
2030 if (i == tx_ring->count)
2031 i = 0;
2032 tx_ring->next_to_use = i;
2033
2034 return true;
2035 }
2036
2037 return false;
2038}
2039
2040static int igbvf_maybe_stop_tx(struct net_device *netdev, int size)
2041{
2042 struct igbvf_adapter *adapter = netdev_priv(netdev);
2043
2044
2045 if (igbvf_desc_unused(adapter->tx_ring) >= size)
2046 return 0;
2047
2048 netif_stop_queue(netdev);
2049
2050 smp_mb();
2051
2052
2053 if (igbvf_desc_unused(adapter->tx_ring) < size)
2054 return -EBUSY;
2055
2056 netif_wake_queue(netdev);
2057
2058 ++adapter->restart_queue;
2059 return 0;
2060}
2061
2062#define IGBVF_MAX_TXD_PWR 16
2063#define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR)
2064
2065static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
2066 struct igbvf_ring *tx_ring,
2067 struct sk_buff *skb,
2068 unsigned int first)
2069{
2070 struct igbvf_buffer *buffer_info;
2071 struct pci_dev *pdev = adapter->pdev;
2072 unsigned int len = skb_headlen(skb);
2073 unsigned int count = 0, i;
2074 unsigned int f;
2075
2076 i = tx_ring->next_to_use;
2077
2078 buffer_info = &tx_ring->buffer_info[i];
2079 BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
2080 buffer_info->length = len;
2081
2082 buffer_info->time_stamp = jiffies;
2083 buffer_info->next_to_watch = i;
2084 buffer_info->mapped_as_page = false;
2085 buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len,
2086 DMA_TO_DEVICE);
2087 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
2088 goto dma_error;
2089
2090
2091 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
2092 const struct skb_frag_struct *frag;
2093
2094 count++;
2095 i++;
2096 if (i == tx_ring->count)
2097 i = 0;
2098
2099 frag = &skb_shinfo(skb)->frags[f];
2100 len = skb_frag_size(frag);
2101
2102 buffer_info = &tx_ring->buffer_info[i];
2103 BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
2104 buffer_info->length = len;
2105 buffer_info->time_stamp = jiffies;
2106 buffer_info->next_to_watch = i;
2107 buffer_info->mapped_as_page = true;
2108 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len,
2109 DMA_TO_DEVICE);
2110 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
2111 goto dma_error;
2112 }
2113
2114 tx_ring->buffer_info[i].skb = skb;
2115 tx_ring->buffer_info[first].next_to_watch = i;
2116
2117 return ++count;
2118
2119dma_error:
2120 dev_err(&pdev->dev, "TX DMA map failed\n");
2121
2122
2123 buffer_info->dma = 0;
2124 buffer_info->time_stamp = 0;
2125 buffer_info->length = 0;
2126 buffer_info->next_to_watch = 0;
2127 buffer_info->mapped_as_page = false;
2128 if (count)
2129 count--;
2130
2131
2132 while (count--) {
2133 if (i==0)
2134 i += tx_ring->count;
2135 i--;
2136 buffer_info = &tx_ring->buffer_info[i];
2137 igbvf_put_txbuf(adapter, buffer_info);
2138 }
2139
2140 return 0;
2141}
2142
2143static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
2144 struct igbvf_ring *tx_ring,
2145 int tx_flags, int count, u32 paylen,
2146 u8 hdr_len)
2147{
2148 union e1000_adv_tx_desc *tx_desc = NULL;
2149 struct igbvf_buffer *buffer_info;
2150 u32 olinfo_status = 0, cmd_type_len;
2151 unsigned int i;
2152
2153 cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
2154 E1000_ADVTXD_DCMD_DEXT);
2155
2156 if (tx_flags & IGBVF_TX_FLAGS_VLAN)
2157 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
2158
2159 if (tx_flags & IGBVF_TX_FLAGS_TSO) {
2160 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
2161
2162
2163 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
2164
2165
2166 if (tx_flags & IGBVF_TX_FLAGS_IPV4)
2167 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
2168
2169 } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) {
2170 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
2171 }
2172
2173 olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
2174
2175 i = tx_ring->next_to_use;
2176 while (count--) {
2177 buffer_info = &tx_ring->buffer_info[i];
2178 tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
2179 tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
2180 tx_desc->read.cmd_type_len =
2181 cpu_to_le32(cmd_type_len | buffer_info->length);
2182 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
2183 i++;
2184 if (i == tx_ring->count)
2185 i = 0;
2186 }
2187
2188 tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
2189
2190
2191
2192
2193 wmb();
2194
2195 tx_ring->next_to_use = i;
2196 writel(i, adapter->hw.hw_addr + tx_ring->tail);
2197
2198
2199 mmiowb();
2200}
2201
2202static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb,
2203 struct net_device *netdev,
2204 struct igbvf_ring *tx_ring)
2205{
2206 struct igbvf_adapter *adapter = netdev_priv(netdev);
2207 unsigned int first, tx_flags = 0;
2208 u8 hdr_len = 0;
2209 int count = 0;
2210 int tso = 0;
2211
2212 if (test_bit(__IGBVF_DOWN, &adapter->state)) {
2213 dev_kfree_skb_any(skb);
2214 return NETDEV_TX_OK;
2215 }
2216
2217 if (skb->len <= 0) {
2218 dev_kfree_skb_any(skb);
2219 return NETDEV_TX_OK;
2220 }
2221
2222
2223
2224
2225
2226
2227
2228
2229 if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) {
2230
2231 return NETDEV_TX_BUSY;
2232 }
2233
2234 if (vlan_tx_tag_present(skb)) {
2235 tx_flags |= IGBVF_TX_FLAGS_VLAN;
2236 tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT);
2237 }
2238
2239 if (skb->protocol == htons(ETH_P_IP))
2240 tx_flags |= IGBVF_TX_FLAGS_IPV4;
2241
2242 first = tx_ring->next_to_use;
2243
2244 tso = skb_is_gso(skb) ?
2245 igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0;
2246 if (unlikely(tso < 0)) {
2247 dev_kfree_skb_any(skb);
2248 return NETDEV_TX_OK;
2249 }
2250
2251 if (tso)
2252 tx_flags |= IGBVF_TX_FLAGS_TSO;
2253 else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
2254 (skb->ip_summed == CHECKSUM_PARTIAL))
2255 tx_flags |= IGBVF_TX_FLAGS_CSUM;
2256
2257
2258
2259
2260
2261 count = igbvf_tx_map_adv(adapter, tx_ring, skb, first);
2262
2263 if (count) {
2264 igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
2265 skb->len, hdr_len);
2266
2267 igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4);
2268 } else {
2269 dev_kfree_skb_any(skb);
2270 tx_ring->buffer_info[first].time_stamp = 0;
2271 tx_ring->next_to_use = first;
2272 }
2273
2274 return NETDEV_TX_OK;
2275}
2276
2277static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb,
2278 struct net_device *netdev)
2279{
2280 struct igbvf_adapter *adapter = netdev_priv(netdev);
2281 struct igbvf_ring *tx_ring;
2282
2283 if (test_bit(__IGBVF_DOWN, &adapter->state)) {
2284 dev_kfree_skb_any(skb);
2285 return NETDEV_TX_OK;
2286 }
2287
2288 tx_ring = &adapter->tx_ring[0];
2289
2290 return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
2291}
2292
2293
2294
2295
2296
2297static void igbvf_tx_timeout(struct net_device *netdev)
2298{
2299 struct igbvf_adapter *adapter = netdev_priv(netdev);
2300
2301
2302 adapter->tx_timeout_count++;
2303 schedule_work(&adapter->reset_task);
2304}
2305
2306static void igbvf_reset_task(struct work_struct *work)
2307{
2308 struct igbvf_adapter *adapter;
2309 adapter = container_of(work, struct igbvf_adapter, reset_task);
2310
2311 igbvf_reinit_locked(adapter);
2312}
2313
2314
2315
2316
2317
2318
2319
2320
2321static struct net_device_stats *igbvf_get_stats(struct net_device *netdev)
2322{
2323 struct igbvf_adapter *adapter = netdev_priv(netdev);
2324
2325
2326 return &adapter->net_stats;
2327}
2328
2329
2330
2331
2332
2333
2334
2335
2336static int igbvf_change_mtu(struct net_device *netdev, int new_mtu)
2337{
2338 struct igbvf_adapter *adapter = netdev_priv(netdev);
2339 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
2340
2341 if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2342 dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
2343 return -EINVAL;
2344 }
2345
2346#define MAX_STD_JUMBO_FRAME_SIZE 9234
2347 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
2348 dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
2349 return -EINVAL;
2350 }
2351
2352 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
2353 msleep(1);
2354
2355 adapter->max_frame_size = max_frame;
2356 if (netif_running(netdev))
2357 igbvf_down(adapter);
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368 if (max_frame <= 1024)
2369 adapter->rx_buffer_len = 1024;
2370 else if (max_frame <= 2048)
2371 adapter->rx_buffer_len = 2048;
2372 else
2373#if (PAGE_SIZE / 2) > 16384
2374 adapter->rx_buffer_len = 16384;
2375#else
2376 adapter->rx_buffer_len = PAGE_SIZE / 2;
2377#endif
2378
2379
2380
2381 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
2382 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
2383 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN +
2384 ETH_FCS_LEN;
2385
2386 dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
2387 netdev->mtu, new_mtu);
2388 netdev->mtu = new_mtu;
2389
2390 if (netif_running(netdev))
2391 igbvf_up(adapter);
2392 else
2393 igbvf_reset(adapter);
2394
2395 clear_bit(__IGBVF_RESETTING, &adapter->state);
2396
2397 return 0;
2398}
2399
2400static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2401{
2402 switch (cmd) {
2403 default:
2404 return -EOPNOTSUPP;
2405 }
2406}
2407
2408static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state)
2409{
2410 struct net_device *netdev = pci_get_drvdata(pdev);
2411 struct igbvf_adapter *adapter = netdev_priv(netdev);
2412#ifdef CONFIG_PM
2413 int retval = 0;
2414#endif
2415
2416 netif_device_detach(netdev);
2417
2418 if (netif_running(netdev)) {
2419 WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
2420 igbvf_down(adapter);
2421 igbvf_free_irq(adapter);
2422 }
2423
2424#ifdef CONFIG_PM
2425 retval = pci_save_state(pdev);
2426 if (retval)
2427 return retval;
2428#endif
2429
2430 pci_disable_device(pdev);
2431
2432 return 0;
2433}
2434
2435#ifdef CONFIG_PM
2436static int igbvf_resume(struct pci_dev *pdev)
2437{
2438 struct net_device *netdev = pci_get_drvdata(pdev);
2439 struct igbvf_adapter *adapter = netdev_priv(netdev);
2440 u32 err;
2441
2442 pci_restore_state(pdev);
2443 err = pci_enable_device_mem(pdev);
2444 if (err) {
2445 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
2446 return err;
2447 }
2448
2449 pci_set_master(pdev);
2450
2451 if (netif_running(netdev)) {
2452 err = igbvf_request_irq(adapter);
2453 if (err)
2454 return err;
2455 }
2456
2457 igbvf_reset(adapter);
2458
2459 if (netif_running(netdev))
2460 igbvf_up(adapter);
2461
2462 netif_device_attach(netdev);
2463
2464 return 0;
2465}
2466#endif
2467
2468static void igbvf_shutdown(struct pci_dev *pdev)
2469{
2470 igbvf_suspend(pdev, PMSG_SUSPEND);
2471}
2472
2473#ifdef CONFIG_NET_POLL_CONTROLLER
2474
2475
2476
2477
2478
2479static void igbvf_netpoll(struct net_device *netdev)
2480{
2481 struct igbvf_adapter *adapter = netdev_priv(netdev);
2482
2483 disable_irq(adapter->pdev->irq);
2484
2485 igbvf_clean_tx_irq(adapter->tx_ring);
2486
2487 enable_irq(adapter->pdev->irq);
2488}
2489#endif
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev,
2500 pci_channel_state_t state)
2501{
2502 struct net_device *netdev = pci_get_drvdata(pdev);
2503 struct igbvf_adapter *adapter = netdev_priv(netdev);
2504
2505 netif_device_detach(netdev);
2506
2507 if (state == pci_channel_io_perm_failure)
2508 return PCI_ERS_RESULT_DISCONNECT;
2509
2510 if (netif_running(netdev))
2511 igbvf_down(adapter);
2512 pci_disable_device(pdev);
2513
2514
2515 return PCI_ERS_RESULT_NEED_RESET;
2516}
2517
2518
2519
2520
2521
2522
2523
2524
2525static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev)
2526{
2527 struct net_device *netdev = pci_get_drvdata(pdev);
2528 struct igbvf_adapter *adapter = netdev_priv(netdev);
2529
2530 if (pci_enable_device_mem(pdev)) {
2531 dev_err(&pdev->dev,
2532 "Cannot re-enable PCI device after reset.\n");
2533 return PCI_ERS_RESULT_DISCONNECT;
2534 }
2535 pci_set_master(pdev);
2536
2537 igbvf_reset(adapter);
2538
2539 return PCI_ERS_RESULT_RECOVERED;
2540}
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550static void igbvf_io_resume(struct pci_dev *pdev)
2551{
2552 struct net_device *netdev = pci_get_drvdata(pdev);
2553 struct igbvf_adapter *adapter = netdev_priv(netdev);
2554
2555 if (netif_running(netdev)) {
2556 if (igbvf_up(adapter)) {
2557 dev_err(&pdev->dev,
2558 "can't bring device back up after reset\n");
2559 return;
2560 }
2561 }
2562
2563 netif_device_attach(netdev);
2564}
2565
2566static void igbvf_print_device_info(struct igbvf_adapter *adapter)
2567{
2568 struct e1000_hw *hw = &adapter->hw;
2569 struct net_device *netdev = adapter->netdev;
2570 struct pci_dev *pdev = adapter->pdev;
2571
2572 if (hw->mac.type == e1000_vfadapt_i350)
2573 dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n");
2574 else
2575 dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n");
2576 dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr);
2577}
2578
2579static int igbvf_set_features(struct net_device *netdev,
2580 netdev_features_t features)
2581{
2582 struct igbvf_adapter *adapter = netdev_priv(netdev);
2583
2584 if (features & NETIF_F_RXCSUM)
2585 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
2586 else
2587 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
2588
2589 return 0;
2590}
2591
2592static const struct net_device_ops igbvf_netdev_ops = {
2593 .ndo_open = igbvf_open,
2594 .ndo_stop = igbvf_close,
2595 .ndo_start_xmit = igbvf_xmit_frame,
2596 .ndo_get_stats = igbvf_get_stats,
2597 .ndo_set_rx_mode = igbvf_set_multi,
2598 .ndo_set_mac_address = igbvf_set_mac,
2599 .ndo_change_mtu = igbvf_change_mtu,
2600 .ndo_do_ioctl = igbvf_ioctl,
2601 .ndo_tx_timeout = igbvf_tx_timeout,
2602 .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid,
2603 .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid,
2604#ifdef CONFIG_NET_POLL_CONTROLLER
2605 .ndo_poll_controller = igbvf_netpoll,
2606#endif
2607 .ndo_set_features = igbvf_set_features,
2608};
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2622{
2623 struct net_device *netdev;
2624 struct igbvf_adapter *adapter;
2625 struct e1000_hw *hw;
2626 const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data];
2627
2628 static int cards_found;
2629 int err, pci_using_dac;
2630
2631 err = pci_enable_device_mem(pdev);
2632 if (err)
2633 return err;
2634
2635 pci_using_dac = 0;
2636 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
2637 if (!err) {
2638 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
2639 if (!err)
2640 pci_using_dac = 1;
2641 } else {
2642 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
2643 if (err) {
2644 err = dma_set_coherent_mask(&pdev->dev,
2645 DMA_BIT_MASK(32));
2646 if (err) {
2647 dev_err(&pdev->dev, "No usable DMA "
2648 "configuration, aborting\n");
2649 goto err_dma;
2650 }
2651 }
2652 }
2653
2654 err = pci_request_regions(pdev, igbvf_driver_name);
2655 if (err)
2656 goto err_pci_reg;
2657
2658 pci_set_master(pdev);
2659
2660 err = -ENOMEM;
2661 netdev = alloc_etherdev(sizeof(struct igbvf_adapter));
2662 if (!netdev)
2663 goto err_alloc_etherdev;
2664
2665 SET_NETDEV_DEV(netdev, &pdev->dev);
2666
2667 pci_set_drvdata(pdev, netdev);
2668 adapter = netdev_priv(netdev);
2669 hw = &adapter->hw;
2670 adapter->netdev = netdev;
2671 adapter->pdev = pdev;
2672 adapter->ei = ei;
2673 adapter->pba = ei->pba;
2674 adapter->flags = ei->flags;
2675 adapter->hw.back = adapter;
2676 adapter->hw.mac.type = ei->mac;
2677 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
2678
2679
2680
2681 hw->vendor_id = pdev->vendor;
2682 hw->device_id = pdev->device;
2683 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2684 hw->subsystem_device_id = pdev->subsystem_device;
2685 hw->revision_id = pdev->revision;
2686
2687 err = -EIO;
2688 adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0),
2689 pci_resource_len(pdev, 0));
2690
2691 if (!adapter->hw.hw_addr)
2692 goto err_ioremap;
2693
2694 if (ei->get_variants) {
2695 err = ei->get_variants(adapter);
2696 if (err)
2697 goto err_ioremap;
2698 }
2699
2700
2701 err = igbvf_sw_init(adapter);
2702 if (err)
2703 goto err_sw_init;
2704
2705
2706 netdev->netdev_ops = &igbvf_netdev_ops;
2707
2708 igbvf_set_ethtool_ops(netdev);
2709 netdev->watchdog_timeo = 5 * HZ;
2710 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
2711
2712 adapter->bd_number = cards_found++;
2713
2714 netdev->hw_features = NETIF_F_SG |
2715 NETIF_F_IP_CSUM |
2716 NETIF_F_IPV6_CSUM |
2717 NETIF_F_TSO |
2718 NETIF_F_TSO6 |
2719 NETIF_F_RXCSUM;
2720
2721 netdev->features = netdev->hw_features |
2722 NETIF_F_HW_VLAN_TX |
2723 NETIF_F_HW_VLAN_RX |
2724 NETIF_F_HW_VLAN_FILTER;
2725
2726 if (pci_using_dac)
2727 netdev->features |= NETIF_F_HIGHDMA;
2728
2729 netdev->vlan_features |= NETIF_F_TSO;
2730 netdev->vlan_features |= NETIF_F_TSO6;
2731 netdev->vlan_features |= NETIF_F_IP_CSUM;
2732 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
2733 netdev->vlan_features |= NETIF_F_SG;
2734
2735
2736 err = hw->mac.ops.reset_hw(hw);
2737 if (err) {
2738 dev_info(&pdev->dev,
2739 "PF still in reset state, assigning new address."
2740 " Is the PF interface up?\n");
2741 eth_hw_addr_random(netdev);
2742 memcpy(adapter->hw.mac.addr, netdev->dev_addr,
2743 netdev->addr_len);
2744 } else {
2745 err = hw->mac.ops.read_mac_addr(hw);
2746 if (err) {
2747 dev_err(&pdev->dev, "Error reading MAC address\n");
2748 goto err_hw_init;
2749 }
2750 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
2751 netdev->addr_len);
2752 }
2753
2754 if (!is_valid_ether_addr(netdev->dev_addr)) {
2755 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
2756 netdev->dev_addr);
2757 err = -EIO;
2758 goto err_hw_init;
2759 }
2760
2761 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
2762
2763 setup_timer(&adapter->watchdog_timer, &igbvf_watchdog,
2764 (unsigned long) adapter);
2765
2766 INIT_WORK(&adapter->reset_task, igbvf_reset_task);
2767 INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task);
2768
2769
2770 adapter->rx_ring->count = 1024;
2771 adapter->tx_ring->count = 1024;
2772
2773
2774 igbvf_reset(adapter);
2775
2776
2777 if (adapter->hw.mac.type == e1000_vfadapt_i350)
2778 adapter->flags |= IGBVF_FLAG_RX_LB_VLAN_BSWAP;
2779
2780 strcpy(netdev->name, "eth%d");
2781 err = register_netdev(netdev);
2782 if (err)
2783 goto err_hw_init;
2784
2785
2786 netif_carrier_off(netdev);
2787 netif_stop_queue(netdev);
2788
2789 igbvf_print_device_info(adapter);
2790
2791 igbvf_initialize_last_counter_stats(adapter);
2792
2793 return 0;
2794
2795err_hw_init:
2796 kfree(adapter->tx_ring);
2797 kfree(adapter->rx_ring);
2798err_sw_init:
2799 igbvf_reset_interrupt_capability(adapter);
2800 iounmap(adapter->hw.hw_addr);
2801err_ioremap:
2802 free_netdev(netdev);
2803err_alloc_etherdev:
2804 pci_release_regions(pdev);
2805err_pci_reg:
2806err_dma:
2807 pci_disable_device(pdev);
2808 return err;
2809}
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820static void igbvf_remove(struct pci_dev *pdev)
2821{
2822 struct net_device *netdev = pci_get_drvdata(pdev);
2823 struct igbvf_adapter *adapter = netdev_priv(netdev);
2824 struct e1000_hw *hw = &adapter->hw;
2825
2826
2827
2828
2829
2830 set_bit(__IGBVF_DOWN, &adapter->state);
2831 del_timer_sync(&adapter->watchdog_timer);
2832
2833 cancel_work_sync(&adapter->reset_task);
2834 cancel_work_sync(&adapter->watchdog_task);
2835
2836 unregister_netdev(netdev);
2837
2838 igbvf_reset_interrupt_capability(adapter);
2839
2840
2841
2842
2843
2844 netif_napi_del(&adapter->rx_ring->napi);
2845 kfree(adapter->tx_ring);
2846 kfree(adapter->rx_ring);
2847
2848 iounmap(hw->hw_addr);
2849 if (hw->flash_address)
2850 iounmap(hw->flash_address);
2851 pci_release_regions(pdev);
2852
2853 free_netdev(netdev);
2854
2855 pci_disable_device(pdev);
2856}
2857
2858
2859static const struct pci_error_handlers igbvf_err_handler = {
2860 .error_detected = igbvf_io_error_detected,
2861 .slot_reset = igbvf_io_slot_reset,
2862 .resume = igbvf_io_resume,
2863};
2864
2865static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl) = {
2866 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf },
2867 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf },
2868 { }
2869};
2870MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl);
2871
2872
2873static struct pci_driver igbvf_driver = {
2874 .name = igbvf_driver_name,
2875 .id_table = igbvf_pci_tbl,
2876 .probe = igbvf_probe,
2877 .remove = igbvf_remove,
2878#ifdef CONFIG_PM
2879
2880 .suspend = igbvf_suspend,
2881 .resume = igbvf_resume,
2882#endif
2883 .shutdown = igbvf_shutdown,
2884 .err_handler = &igbvf_err_handler
2885};
2886
2887
2888
2889
2890
2891
2892
2893static int __init igbvf_init_module(void)
2894{
2895 int ret;
2896 pr_info("%s - version %s\n", igbvf_driver_string, igbvf_driver_version);
2897 pr_info("%s\n", igbvf_copyright);
2898
2899 ret = pci_register_driver(&igbvf_driver);
2900
2901 return ret;
2902}
2903module_init(igbvf_init_module);
2904
2905
2906
2907
2908
2909
2910
2911static void __exit igbvf_exit_module(void)
2912{
2913 pci_unregister_driver(&igbvf_driver);
2914}
2915module_exit(igbvf_exit_module);
2916
2917
2918MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
2919MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver");
2920MODULE_LICENSE("GPL");
2921MODULE_VERSION(DRV_VERSION);
2922
2923
2924