/
be_main.c
6166 lines (5156 loc) · 161 KB
/
be_main.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2005 - 2016 Broadcom
* All rights reserved.
*
* Contact Information:
* linux-drivers@emulex.com
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
#include <linux/prefetch.h>
#include <linux/module.h>
#include "be.h"
#include "be_cmds.h"
#include <asm/div64.h>
#include <linux/aer.h>
#include <linux/if_bridge.h>
#include <net/busy_poll.h>
#include <net/vxlan.h>
MODULE_DESCRIPTION(DRV_DESC);
MODULE_AUTHOR("Emulex Corporation");
MODULE_LICENSE("GPL");
/* num_vfs module param is obsolete.
* Use sysfs method to enable/disable VFs.
*/
static unsigned int num_vfs;
module_param(num_vfs, uint, 0444);
MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
static ushort rx_frag_size = 2048;
module_param(rx_frag_size, ushort, 0444);
MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
/* Per-module error detection/recovery workq shared across all functions.
* Each function schedules its own work request on this shared workq.
*/
static struct workqueue_struct *be_err_recovery_workq;
static const struct pci_device_id be_dev_ids[] = {
#ifdef CONFIG_BE2NET_BE2
{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
#endif /* CONFIG_BE2NET_BE2 */
#ifdef CONFIG_BE2NET_BE3
{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
#endif /* CONFIG_BE2NET_BE3 */
#ifdef CONFIG_BE2NET_LANCER
{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
#endif /* CONFIG_BE2NET_LANCER */
#ifdef CONFIG_BE2NET_SKYHAWK
{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
#endif /* CONFIG_BE2NET_SKYHAWK */
{ 0 }
};
MODULE_DEVICE_TABLE(pci, be_dev_ids);
/* Workqueue used by all functions for defering cmd calls to the adapter */
static struct workqueue_struct *be_wq;
/* UE Status Low CSR */
static const char * const ue_status_low_desc[] = {
"CEV",
"CTX",
"DBUF",
"ERX",
"Host",
"MPU",
"NDMA",
"PTC ",
"RDMA ",
"RXF ",
"RXIPS ",
"RXULP0 ",
"RXULP1 ",
"RXULP2 ",
"TIM ",
"TPOST ",
"TPRE ",
"TXIPS ",
"TXULP0 ",
"TXULP1 ",
"UC ",
"WDMA ",
"TXULP2 ",
"HOST1 ",
"P0_OB_LINK ",
"P1_OB_LINK ",
"HOST_GPIO ",
"MBOX ",
"ERX2 ",
"SPARE ",
"JTAG ",
"MPU_INTPEND "
};
/* UE Status High CSR */
static const char * const ue_status_hi_desc[] = {
"LPCMEMHOST",
"MGMT_MAC",
"PCS0ONLINE",
"MPU_IRAM",
"PCS1ONLINE",
"PCTL0",
"PCTL1",
"PMEM",
"RR",
"TXPB",
"RXPP",
"XAUI",
"TXP",
"ARM",
"IPC",
"HOST2",
"HOST3",
"HOST4",
"HOST5",
"HOST6",
"HOST7",
"ECRC",
"Poison TLP",
"NETC",
"PERIPH",
"LLTXULP",
"D2P",
"RCON",
"LDMA",
"LLTXP",
"LLTXPB",
"Unknown"
};
#define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
BE_IF_FLAGS_BROADCAST | \
BE_IF_FLAGS_MULTICAST | \
BE_IF_FLAGS_PASS_L3L4_ERRORS)
static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
{
struct be_dma_mem *mem = &q->dma_mem;
if (mem->va) {
dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
mem->dma);
mem->va = NULL;
}
}
static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
u16 len, u16 entry_size)
{
struct be_dma_mem *mem = &q->dma_mem;
memset(q, 0, sizeof(*q));
q->len = len;
q->entry_size = entry_size;
mem->size = len * entry_size;
mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
&mem->dma, GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
{
u32 reg, enabled;
pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
®);
enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
if (!enabled && enable)
reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
else if (enabled && !enable)
reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
else
return;
pci_write_config_dword(adapter->pdev,
PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
}
static void be_intr_set(struct be_adapter *adapter, bool enable)
{
int status = 0;
/* On lancer interrupts can't be controlled via this register */
if (lancer_chip(adapter))
return;
if (be_check_error(adapter, BE_ERROR_EEH))
return;
status = be_cmd_intr_set(adapter, enable);
if (status)
be_reg_intr_set(adapter, enable);
}
static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
{
u32 val = 0;
if (be_check_error(adapter, BE_ERROR_HW))
return;
val |= qid & DB_RQ_RING_ID_MASK;
val |= posted << DB_RQ_NUM_POSTED_SHIFT;
wmb();
iowrite32(val, adapter->db + DB_RQ_OFFSET);
}
static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
u16 posted)
{
u32 val = 0;
if (be_check_error(adapter, BE_ERROR_HW))
return;
val |= txo->q.id & DB_TXULP_RING_ID_MASK;
val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
wmb();
iowrite32(val, adapter->db + txo->db_offset);
}
static void be_eq_notify(struct be_adapter *adapter, u16 qid,
bool arm, bool clear_int, u16 num_popped,
u32 eq_delay_mult_enc)
{
u32 val = 0;
val |= qid & DB_EQ_RING_ID_MASK;
val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
if (be_check_error(adapter, BE_ERROR_HW))
return;
if (arm)
val |= 1 << DB_EQ_REARM_SHIFT;
if (clear_int)
val |= 1 << DB_EQ_CLR_SHIFT;
val |= 1 << DB_EQ_EVNT_SHIFT;
val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
iowrite32(val, adapter->db + DB_EQ_OFFSET);
}
void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
{
u32 val = 0;
val |= qid & DB_CQ_RING_ID_MASK;
val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
DB_CQ_RING_ID_EXT_MASK_SHIFT);
if (be_check_error(adapter, BE_ERROR_HW))
return;
if (arm)
val |= 1 << DB_CQ_REARM_SHIFT;
val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
iowrite32(val, adapter->db + DB_CQ_OFFSET);
}
static int be_dev_mac_add(struct be_adapter *adapter, u8 *mac)
{
int i;
/* Check if mac has already been added as part of uc-list */
for (i = 0; i < adapter->uc_macs; i++) {
if (ether_addr_equal(adapter->uc_list[i].mac, mac)) {
/* mac already added, skip addition */
adapter->pmac_id[0] = adapter->pmac_id[i + 1];
return 0;
}
}
return be_cmd_pmac_add(adapter, mac, adapter->if_handle,
&adapter->pmac_id[0], 0);
}
static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)
{
int i;
/* Skip deletion if the programmed mac is
* being used in uc-list
*/
for (i = 0; i < adapter->uc_macs; i++) {
if (adapter->pmac_id[i + 1] == pmac_id)
return;
}
be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
}
static int be_mac_addr_set(struct net_device *netdev, void *p)
{
struct be_adapter *adapter = netdev_priv(netdev);
struct device *dev = &adapter->pdev->dev;
struct sockaddr *addr = p;
int status;
u8 mac[ETH_ALEN];
u32 old_pmac_id = adapter->pmac_id[0];
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
/* Proceed further only if, User provided MAC is different
* from active MAC
*/
if (ether_addr_equal(addr->sa_data, adapter->dev_mac))
return 0;
/* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC
* address
*/
if (BEx_chip(adapter) && be_virtfn(adapter) &&
!check_privilege(adapter, BE_PRIV_FILTMGMT))
return -EPERM;
/* if device is not running, copy MAC to netdev->dev_addr */
if (!netif_running(netdev))
goto done;
/* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
* privilege or if PF did not provision the new MAC address.
* On BE3, this cmd will always fail if the VF doesn't have the
* FILTMGMT privilege. This failure is OK, only if the PF programmed
* the MAC for the VF.
*/
mutex_lock(&adapter->rx_filter_lock);
status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);
if (!status) {
/* Delete the old programmed MAC. This call may fail if the
* old MAC was already deleted by the PF driver.
*/
if (adapter->pmac_id[0] != old_pmac_id)
be_dev_mac_del(adapter, old_pmac_id);
}
mutex_unlock(&adapter->rx_filter_lock);
/* Decide if the new MAC is successfully activated only after
* querying the FW
*/
status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,
adapter->if_handle, true, 0);
if (status)
goto err;
/* The MAC change did not happen, either due to lack of privilege
* or PF didn't pre-provision.
*/
if (!ether_addr_equal(addr->sa_data, mac)) {
status = -EPERM;
goto err;
}
/* Remember currently programmed MAC */
ether_addr_copy(adapter->dev_mac, addr->sa_data);
done:
ether_addr_copy(netdev->dev_addr, addr->sa_data);
dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
return 0;
err:
dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
return status;
}
/* BE2 supports only v0 cmd */
static void *hw_stats_from_cmd(struct be_adapter *adapter)
{
if (BE2_chip(adapter)) {
struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
return &cmd->hw_stats;
} else if (BE3_chip(adapter)) {
struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
return &cmd->hw_stats;
} else {
struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
return &cmd->hw_stats;
}
}
/* BE2 supports only v0 cmd */
static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
{
if (BE2_chip(adapter)) {
struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
return &hw_stats->erx;
} else if (BE3_chip(adapter)) {
struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
return &hw_stats->erx;
} else {
struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
return &hw_stats->erx;
}
}
static void populate_be_v0_stats(struct be_adapter *adapter)
{
struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
struct be_port_rxf_stats_v0 *port_stats =
&rxf_stats->port[adapter->port_num];
struct be_drv_stats *drvs = &adapter->drv_stats;
be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
drvs->rx_pause_frames = port_stats->rx_pause_frames;
drvs->rx_crc_errors = port_stats->rx_crc_errors;
drvs->rx_control_frames = port_stats->rx_control_frames;
drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
drvs->rx_dropped_header_too_small =
port_stats->rx_dropped_header_too_small;
drvs->rx_address_filtered =
port_stats->rx_address_filtered +
port_stats->rx_vlan_filtered;
drvs->rx_alignment_symbol_errors =
port_stats->rx_alignment_symbol_errors;
drvs->tx_pauseframes = port_stats->tx_pauseframes;
drvs->tx_controlframes = port_stats->tx_controlframes;
if (adapter->port_num)
drvs->jabber_events = rxf_stats->port1_jabber_events;
else
drvs->jabber_events = rxf_stats->port0_jabber_events;
drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
drvs->forwarded_packets = rxf_stats->forwarded_packets;
drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
}
static void populate_be_v1_stats(struct be_adapter *adapter)
{
struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
struct be_port_rxf_stats_v1 *port_stats =
&rxf_stats->port[adapter->port_num];
struct be_drv_stats *drvs = &adapter->drv_stats;
be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
drvs->rx_pause_frames = port_stats->rx_pause_frames;
drvs->rx_crc_errors = port_stats->rx_crc_errors;
drvs->rx_control_frames = port_stats->rx_control_frames;
drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
drvs->rx_dropped_header_too_small =
port_stats->rx_dropped_header_too_small;
drvs->rx_input_fifo_overflow_drop =
port_stats->rx_input_fifo_overflow_drop;
drvs->rx_address_filtered = port_stats->rx_address_filtered;
drvs->rx_alignment_symbol_errors =
port_stats->rx_alignment_symbol_errors;
drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
drvs->tx_pauseframes = port_stats->tx_pauseframes;
drvs->tx_controlframes = port_stats->tx_controlframes;
drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
drvs->jabber_events = port_stats->jabber_events;
drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
drvs->forwarded_packets = rxf_stats->forwarded_packets;
drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
}
static void populate_be_v2_stats(struct be_adapter *adapter)
{
struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
struct be_port_rxf_stats_v2 *port_stats =
&rxf_stats->port[adapter->port_num];
struct be_drv_stats *drvs = &adapter->drv_stats;
be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
drvs->rx_pause_frames = port_stats->rx_pause_frames;
drvs->rx_crc_errors = port_stats->rx_crc_errors;
drvs->rx_control_frames = port_stats->rx_control_frames;
drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
drvs->rx_dropped_header_too_small =
port_stats->rx_dropped_header_too_small;
drvs->rx_input_fifo_overflow_drop =
port_stats->rx_input_fifo_overflow_drop;
drvs->rx_address_filtered = port_stats->rx_address_filtered;
drvs->rx_alignment_symbol_errors =
port_stats->rx_alignment_symbol_errors;
drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
drvs->tx_pauseframes = port_stats->tx_pauseframes;
drvs->tx_controlframes = port_stats->tx_controlframes;
drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
drvs->jabber_events = port_stats->jabber_events;
drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
drvs->forwarded_packets = rxf_stats->forwarded_packets;
drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
if (be_roce_supported(adapter)) {
drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
drvs->rx_roce_frames = port_stats->roce_frames_received;
drvs->roce_drops_crc = port_stats->roce_drops_crc;
drvs->roce_drops_payload_len =
port_stats->roce_drops_payload_len;
}
}
static void populate_lancer_stats(struct be_adapter *adapter)
{
struct be_drv_stats *drvs = &adapter->drv_stats;
struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
drvs->rx_dropped_tcp_length =
pport_stats->rx_dropped_invalid_tcp_length;
drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
drvs->rx_dropped_header_too_small =
pport_stats->rx_dropped_header_too_small;
drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
drvs->rx_address_filtered =
pport_stats->rx_address_filtered +
pport_stats->rx_vlan_filtered;
drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
drvs->jabber_events = pport_stats->rx_jabbers;
drvs->forwarded_packets = pport_stats->num_forwards_lo;
drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
drvs->rx_drops_too_many_frags =
pport_stats->rx_drops_too_many_frags_lo;
}
static void accumulate_16bit_val(u32 *acc, u16 val)
{
#define lo(x) (x & 0xFFFF)
#define hi(x) (x & 0xFFFF0000)
bool wrapped = val < lo(*acc);
u32 newacc = hi(*acc) + val;
if (wrapped)
newacc += 65536;
WRITE_ONCE(*acc, newacc);
}
static void populate_erx_stats(struct be_adapter *adapter,
struct be_rx_obj *rxo, u32 erx_stat)
{
if (!BEx_chip(adapter))
rx_stats(rxo)->rx_drops_no_frags = erx_stat;
else
/* below erx HW counter can actually wrap around after
* 65535. Driver accumulates a 32-bit value
*/
accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
(u16)erx_stat);
}
void be_parse_stats(struct be_adapter *adapter)
{
struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
struct be_rx_obj *rxo;
int i;
u32 erx_stat;
if (lancer_chip(adapter)) {
populate_lancer_stats(adapter);
} else {
if (BE2_chip(adapter))
populate_be_v0_stats(adapter);
else if (BE3_chip(adapter))
/* for BE3 */
populate_be_v1_stats(adapter);
else
populate_be_v2_stats(adapter);
/* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
for_all_rx_queues(adapter, rxo, i) {
erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
populate_erx_stats(adapter, rxo, erx_stat);
}
}
}
static void be_get_stats64(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct be_adapter *adapter = netdev_priv(netdev);
struct be_drv_stats *drvs = &adapter->drv_stats;
struct be_rx_obj *rxo;
struct be_tx_obj *txo;
u64 pkts, bytes;
unsigned int start;
int i;
for_all_rx_queues(adapter, rxo, i) {
const struct be_rx_stats *rx_stats = rx_stats(rxo);
do {
start = u64_stats_fetch_begin_irq(&rx_stats->sync);
pkts = rx_stats(rxo)->rx_pkts;
bytes = rx_stats(rxo)->rx_bytes;
} while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
stats->rx_packets += pkts;
stats->rx_bytes += bytes;
stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
rx_stats(rxo)->rx_drops_no_frags;
}
for_all_tx_queues(adapter, txo, i) {
const struct be_tx_stats *tx_stats = tx_stats(txo);
do {
start = u64_stats_fetch_begin_irq(&tx_stats->sync);
pkts = tx_stats(txo)->tx_pkts;
bytes = tx_stats(txo)->tx_bytes;
} while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
stats->tx_packets += pkts;
stats->tx_bytes += bytes;
}
/* bad pkts received */
stats->rx_errors = drvs->rx_crc_errors +
drvs->rx_alignment_symbol_errors +
drvs->rx_in_range_errors +
drvs->rx_out_range_errors +
drvs->rx_frame_too_long +
drvs->rx_dropped_too_small +
drvs->rx_dropped_too_short +
drvs->rx_dropped_header_too_small +
drvs->rx_dropped_tcp_length +
drvs->rx_dropped_runt;
/* detailed rx errors */
stats->rx_length_errors = drvs->rx_in_range_errors +
drvs->rx_out_range_errors +
drvs->rx_frame_too_long;
stats->rx_crc_errors = drvs->rx_crc_errors;
/* frame alignment errors */
stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
/* receiver fifo overrun */
/* drops_no_pbuf is no per i/f, it's per BE card */
stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
drvs->rx_input_fifo_overflow_drop +
drvs->rx_drops_no_pbuf;
}
void be_link_status_update(struct be_adapter *adapter, u8 link_status)
{
struct net_device *netdev = adapter->netdev;
if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
netif_carrier_off(netdev);
adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
}
if (link_status)
netif_carrier_on(netdev);
else
netif_carrier_off(netdev);
netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
}
static int be_gso_hdr_len(struct sk_buff *skb)
{
if (skb->encapsulation)
return skb_inner_transport_offset(skb) +
inner_tcp_hdrlen(skb);
return skb_transport_offset(skb) + tcp_hdrlen(skb);
}
static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
{
struct be_tx_stats *stats = tx_stats(txo);
u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
/* Account for headers which get duplicated in TSO pkt */
u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
u64_stats_update_begin(&stats->sync);
stats->tx_reqs++;
stats->tx_bytes += skb->len + dup_hdr_len;
stats->tx_pkts += tx_pkts;
if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
stats->tx_vxlan_offload_pkts += tx_pkts;
u64_stats_update_end(&stats->sync);
}
/* Returns number of WRBs needed for the skb */
static u32 skb_wrb_cnt(struct sk_buff *skb)
{
/* +1 for the header wrb */
return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
}
static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
{
wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
wrb->rsvd0 = 0;
}
/* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
* to avoid the swap and shift/mask operations in wrb_fill().
*/
static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
{
wrb->frag_pa_hi = 0;
wrb->frag_pa_lo = 0;
wrb->frag_len = 0;
wrb->rsvd0 = 0;
}
static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
struct sk_buff *skb)
{
u8 vlan_prio;
u16 vlan_tag;
vlan_tag = skb_vlan_tag_get(skb);
vlan_prio = skb_vlan_tag_get_prio(skb);
/* If vlan priority provided by OS is NOT in available bmap */
if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
adapter->recommended_prio_bits;
return vlan_tag;
}
/* Used only for IP tunnel packets */
static u16 skb_inner_ip_proto(struct sk_buff *skb)
{
return (inner_ip_hdr(skb)->version == 4) ?
inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
}
static u16 skb_ip_proto(struct sk_buff *skb)
{
return (ip_hdr(skb)->version == 4) ?
ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
}
static inline bool be_is_txq_full(struct be_tx_obj *txo)
{
return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
}
static inline bool be_can_txq_wake(struct be_tx_obj *txo)
{
return atomic_read(&txo->q.used) < txo->q.len / 2;
}
static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
{
return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
}
static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
struct sk_buff *skb,
struct be_wrb_params *wrb_params)
{
u16 proto;
if (skb_is_gso(skb)) {
BE_WRB_F_SET(wrb_params->features, LSO, 1);
wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
BE_WRB_F_SET(wrb_params->features, LSO6, 1);
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
if (skb->encapsulation) {
BE_WRB_F_SET(wrb_params->features, IPCS, 1);
proto = skb_inner_ip_proto(skb);
} else {
proto = skb_ip_proto(skb);
}
if (proto == IPPROTO_TCP)
BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
else if (proto == IPPROTO_UDP)
BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
}
if (skb_vlan_tag_present(skb)) {
BE_WRB_F_SET(wrb_params->features, VLAN, 1);
wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
}
BE_WRB_F_SET(wrb_params->features, CRC, 1);
}
static void wrb_fill_hdr(struct be_adapter *adapter,
struct be_eth_hdr_wrb *hdr,
struct be_wrb_params *wrb_params,
struct sk_buff *skb)
{
memset(hdr, 0, sizeof(*hdr));
SET_TX_WRB_HDR_BITS(crc, hdr,
BE_WRB_F_GET(wrb_params->features, CRC));
SET_TX_WRB_HDR_BITS(ipcs, hdr,
BE_WRB_F_GET(wrb_params->features, IPCS));
SET_TX_WRB_HDR_BITS(tcpcs, hdr,
BE_WRB_F_GET(wrb_params->features, TCPCS));
SET_TX_WRB_HDR_BITS(udpcs, hdr,
BE_WRB_F_GET(wrb_params->features, UDPCS));
SET_TX_WRB_HDR_BITS(lso, hdr,
BE_WRB_F_GET(wrb_params->features, LSO));
SET_TX_WRB_HDR_BITS(lso6, hdr,
BE_WRB_F_GET(wrb_params->features, LSO6));
SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
/* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
* hack is not needed, the evt bit is set while ringing DB.
*/
SET_TX_WRB_HDR_BITS(event, hdr,
BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
SET_TX_WRB_HDR_BITS(vlan, hdr,
BE_WRB_F_GET(wrb_params->features, VLAN));
SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
SET_TX_WRB_HDR_BITS(mgmt, hdr,
BE_WRB_F_GET(wrb_params->features, OS2BMC));
}
static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
bool unmap_single)
{
dma_addr_t dma;
u32 frag_len = le32_to_cpu(wrb->frag_len);
dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
(u64)le32_to_cpu(wrb->frag_pa_lo);
if (frag_len) {
if (unmap_single)
dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
else
dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
}
}
/* Grab a WRB header for xmit */
static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
{
u32 head = txo->q.head;
queue_head_inc(&txo->q);
return head;
}
/* Set up the WRB header for xmit */
static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
struct be_tx_obj *txo,
struct be_wrb_params *wrb_params,
struct sk_buff *skb, u16 head)
{
u32 num_frags = skb_wrb_cnt(skb);
struct be_queue_info *txq = &txo->q;
struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
wrb_fill_hdr(adapter, hdr, wrb_params, skb);
be_dws_cpu_to_le(hdr, sizeof(*hdr));
BUG_ON(txo->sent_skb_list[head]);
txo->sent_skb_list[head] = skb;
txo->last_req_hdr = head;
atomic_add(num_frags, &txq->used);
txo->last_req_wrb_cnt = num_frags;
txo->pend_wrb_cnt += num_frags;
}
/* Setup a WRB fragment (buffer descriptor) for xmit */
static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
int len)
{
struct be_eth_wrb *wrb;
struct be_queue_info *txq = &txo->q;
wrb = queue_head_node(txq);
wrb_fill(wrb, busaddr, len);
queue_head_inc(txq);
}
/* Bring the queue back to the state it was in before be_xmit_enqueue() routine
* was invoked. The producer index is restored to the previous packet and the
* WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
*/
static void be_xmit_restore(struct be_adapter *adapter,
struct be_tx_obj *txo, u32 head, bool map_single,
u32 copied)
{
struct device *dev;
struct be_eth_wrb *wrb;
struct be_queue_info *txq = &txo->q;
dev = &adapter->pdev->dev;
txq->head = head;
/* skip the first wrb (hdr); it's not mapped */
queue_head_inc(txq);
while (copied) {
wrb = queue_head_node(txq);
unmap_tx_frag(dev, wrb, map_single);
map_single = false;
copied -= le32_to_cpu(wrb->frag_len);
queue_head_inc(txq);
}
txq->head = head;
}
/* Enqueue the given packet for transmit. This routine allocates WRBs for the
* packet, dma maps the packet buffers and sets up the WRBs. Returns the number
* of WRBs used up by the packet.
*/
static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
struct sk_buff *skb,
struct be_wrb_params *wrb_params)
{
u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
struct device *dev = &adapter->pdev->dev;
bool map_single = false;
u32 head;
dma_addr_t busaddr;
int len;