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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
|
/**********************************************************************
* Author: Cavium, Inc.
*
* Contact: support@cavium.com
* Please include "LiquidIO" in the subject.
*
* Copyright (c) 2003-2016 Cavium, Inc.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more details.
***********************************************************************/
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/etherdevice.h>
#include "liquidio_common.h"
#include "octeon_droq.h"
#include "octeon_iq.h"
#include "response_manager.h"
#include "octeon_device.h"
#include "cn23xx_pf_device.h"
#include "octeon_main.h"
#include "octeon_mailbox.h"
#define RESET_NOTDONE 0
#define RESET_DONE 1
/* Change the value of SLI Packet Input Jabber Register to allow
* VXLAN TSO packets which can be 64424 bytes, exceeding the
* MAX_GSO_SIZE we supplied to the kernel
*/
#define CN23XX_INPUT_JABBER 64600
void cn23xx_dump_pf_initialized_regs(struct octeon_device *oct)
{
int i = 0;
u32 regval = 0;
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
/*In cn23xx_soft_reset*/
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%llx\n",
"CN23XX_WIN_WR_MASK_REG", CVM_CAST64(CN23XX_WIN_WR_MASK_REG),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_WIN_WR_MASK_REG)));
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_SLI_SCRATCH1", CVM_CAST64(CN23XX_SLI_SCRATCH1),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_SCRATCH1)));
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_RST_SOFT_RST", CN23XX_RST_SOFT_RST,
lio_pci_readq(oct, CN23XX_RST_SOFT_RST));
/*In cn23xx_set_dpi_regs*/
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_DPI_DMA_CONTROL", CN23XX_DPI_DMA_CONTROL,
lio_pci_readq(oct, CN23XX_DPI_DMA_CONTROL));
for (i = 0; i < 6; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_DPI_DMA_ENG_ENB", i,
CN23XX_DPI_DMA_ENG_ENB(i),
lio_pci_readq(oct, CN23XX_DPI_DMA_ENG_ENB(i)));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_DPI_DMA_ENG_BUF", i,
CN23XX_DPI_DMA_ENG_BUF(i),
lio_pci_readq(oct, CN23XX_DPI_DMA_ENG_BUF(i)));
}
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n", "CN23XX_DPI_CTL",
CN23XX_DPI_CTL, lio_pci_readq(oct, CN23XX_DPI_CTL));
/*In cn23xx_setup_pcie_mps and cn23xx_setup_pcie_mrrs */
pci_read_config_dword(oct->pci_dev, CN23XX_CONFIG_PCIE_DEVCTL, ®val);
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_CONFIG_PCIE_DEVCTL",
CVM_CAST64(CN23XX_CONFIG_PCIE_DEVCTL), CVM_CAST64(regval));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_DPI_SLI_PRTX_CFG", oct->pcie_port,
CN23XX_DPI_SLI_PRTX_CFG(oct->pcie_port),
lio_pci_readq(oct, CN23XX_DPI_SLI_PRTX_CFG(oct->pcie_port)));
/*In cn23xx_specific_regs_setup */
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_S2M_PORTX_CTL", oct->pcie_port,
CVM_CAST64(CN23XX_SLI_S2M_PORTX_CTL(oct->pcie_port)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_S2M_PORTX_CTL(oct->pcie_port))));
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_SLI_RING_RST", CVM_CAST64(CN23XX_SLI_PKT_IOQ_RING_RST),
(u64)octeon_read_csr64(oct, CN23XX_SLI_PKT_IOQ_RING_RST));
/*In cn23xx_setup_global_mac_regs*/
for (i = 0; i < CN23XX_MAX_MACS; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_PKT_MAC_RINFO64", i,
CVM_CAST64(CN23XX_SLI_PKT_MAC_RINFO64(i, oct->pf_num)),
CVM_CAST64(octeon_read_csr64
(oct, CN23XX_SLI_PKT_MAC_RINFO64
(i, oct->pf_num))));
}
/*In cn23xx_setup_global_input_regs*/
for (i = 0; i < CN23XX_MAX_INPUT_QUEUES; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_IQ_PKT_CONTROL64", i,
CVM_CAST64(CN23XX_SLI_IQ_PKT_CONTROL64(i)),
CVM_CAST64(octeon_read_csr64
(oct, CN23XX_SLI_IQ_PKT_CONTROL64(i))));
}
/*In cn23xx_setup_global_output_regs*/
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_WMARK", CVM_CAST64(CN23XX_SLI_OQ_WMARK),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_OQ_WMARK)));
for (i = 0; i < CN23XX_MAX_OUTPUT_QUEUES; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_PKT_CONTROL", i,
CVM_CAST64(CN23XX_SLI_OQ_PKT_CONTROL(i)),
CVM_CAST64(octeon_read_csr(
oct, CN23XX_SLI_OQ_PKT_CONTROL(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_PKT_INT_LEVELS", i,
CVM_CAST64(CN23XX_SLI_OQ_PKT_INT_LEVELS(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(i))));
}
/*In cn23xx_enable_interrupt and cn23xx_disable_interrupt*/
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"cn23xx->intr_enb_reg64",
CVM_CAST64((long)(cn23xx->intr_enb_reg64)),
CVM_CAST64(readq(cn23xx->intr_enb_reg64)));
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"cn23xx->intr_sum_reg64",
CVM_CAST64((long)(cn23xx->intr_sum_reg64)),
CVM_CAST64(readq(cn23xx->intr_sum_reg64)));
/*In cn23xx_setup_iq_regs*/
for (i = 0; i < CN23XX_MAX_INPUT_QUEUES; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_IQ_BASE_ADDR64", i,
CVM_CAST64(CN23XX_SLI_IQ_BASE_ADDR64(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_IQ_BASE_ADDR64(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_IQ_SIZE", i,
CVM_CAST64(CN23XX_SLI_IQ_SIZE(i)),
CVM_CAST64(octeon_read_csr
(oct, CN23XX_SLI_IQ_SIZE(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_IQ_DOORBELL", i,
CVM_CAST64(CN23XX_SLI_IQ_DOORBELL(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_IQ_DOORBELL(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_IQ_INSTR_COUNT64", i,
CVM_CAST64(CN23XX_SLI_IQ_INSTR_COUNT64(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_IQ_INSTR_COUNT64(i))));
}
/*In cn23xx_setup_oq_regs*/
for (i = 0; i < CN23XX_MAX_OUTPUT_QUEUES; i++) {
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_BASE_ADDR64", i,
CVM_CAST64(CN23XX_SLI_OQ_BASE_ADDR64(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_OQ_BASE_ADDR64(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_SIZE", i,
CVM_CAST64(CN23XX_SLI_OQ_SIZE(i)),
CVM_CAST64(octeon_read_csr
(oct, CN23XX_SLI_OQ_SIZE(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_BUFF_INFO_SIZE", i,
CVM_CAST64(CN23XX_SLI_OQ_BUFF_INFO_SIZE(i)),
CVM_CAST64(octeon_read_csr(
oct, CN23XX_SLI_OQ_BUFF_INFO_SIZE(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_PKTS_SENT", i,
CVM_CAST64(CN23XX_SLI_OQ_PKTS_SENT(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_OQ_PKTS_SENT(i))));
dev_dbg(&oct->pci_dev->dev, "%s(%d)[%llx] : 0x%016llx\n",
"CN23XX_SLI_OQ_PKTS_CREDIT", i,
CVM_CAST64(CN23XX_SLI_OQ_PKTS_CREDIT(i)),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_OQ_PKTS_CREDIT(i))));
}
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_SLI_PKT_TIME_INT",
CVM_CAST64(CN23XX_SLI_PKT_TIME_INT),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_PKT_TIME_INT)));
dev_dbg(&oct->pci_dev->dev, "%s[%llx] : 0x%016llx\n",
"CN23XX_SLI_PKT_CNT_INT",
CVM_CAST64(CN23XX_SLI_PKT_CNT_INT),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_PKT_CNT_INT)));
}
static int cn23xx_pf_soft_reset(struct octeon_device *oct)
{
octeon_write_csr64(oct, CN23XX_WIN_WR_MASK_REG, 0xFF);
dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: BIST enabled for CN23XX soft reset\n",
oct->octeon_id);
octeon_write_csr64(oct, CN23XX_SLI_SCRATCH1, 0x1234ULL);
/* Initiate chip-wide soft reset */
lio_pci_readq(oct, CN23XX_RST_SOFT_RST);
lio_pci_writeq(oct, 1, CN23XX_RST_SOFT_RST);
/* Wait for 100ms as Octeon resets. */
mdelay(100);
if (octeon_read_csr64(oct, CN23XX_SLI_SCRATCH1)) {
dev_err(&oct->pci_dev->dev, "OCTEON[%d]: Soft reset failed\n",
oct->octeon_id);
return 1;
}
dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: Reset completed\n",
oct->octeon_id);
/* restore the reset value*/
octeon_write_csr64(oct, CN23XX_WIN_WR_MASK_REG, 0xFF);
return 0;
}
static void cn23xx_enable_error_reporting(struct octeon_device *oct)
{
u32 regval;
u32 uncorrectable_err_mask, corrtable_err_status;
pci_read_config_dword(oct->pci_dev, CN23XX_CONFIG_PCIE_DEVCTL, ®val);
if (regval & CN23XX_CONFIG_PCIE_DEVCTL_MASK) {
uncorrectable_err_mask = 0;
corrtable_err_status = 0;
pci_read_config_dword(oct->pci_dev,
CN23XX_CONFIG_PCIE_UNCORRECT_ERR_MASK,
&uncorrectable_err_mask);
pci_read_config_dword(oct->pci_dev,
CN23XX_CONFIG_PCIE_CORRECT_ERR_STATUS,
&corrtable_err_status);
dev_err(&oct->pci_dev->dev, "PCI-E Fatal error detected;\n"
"\tdev_ctl_status_reg = 0x%08x\n"
"\tuncorrectable_error_mask_reg = 0x%08x\n"
"\tcorrectable_error_status_reg = 0x%08x\n",
regval, uncorrectable_err_mask,
corrtable_err_status);
}
regval |= 0xf; /* Enable Link error reporting */
dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: Enabling PCI-E error reporting..\n",
oct->octeon_id);
pci_write_config_dword(oct->pci_dev, CN23XX_CONFIG_PCIE_DEVCTL, regval);
}
static u32 cn23xx_coprocessor_clock(struct octeon_device *oct)
{
/* Bits 29:24 of RST_BOOT[PNR_MUL] holds the ref.clock MULTIPLIER
* for SLI.
*/
/* TBD: get the info in Hand-shake */
return (((lio_pci_readq(oct, CN23XX_RST_BOOT) >> 24) & 0x3f) * 50);
}
u32 cn23xx_pf_get_oq_ticks(struct octeon_device *oct, u32 time_intr_in_us)
{
/* This gives the SLI clock per microsec */
u32 oqticks_per_us = cn23xx_coprocessor_clock(oct);
oct->pfvf_hsword.coproc_tics_per_us = oqticks_per_us;
/* This gives the clock cycles per millisecond */
oqticks_per_us *= 1000;
/* This gives the oq ticks (1024 core clock cycles) per millisecond */
oqticks_per_us /= 1024;
/* time_intr is in microseconds. The next 2 steps gives the oq ticks
* corressponding to time_intr.
*/
oqticks_per_us *= time_intr_in_us;
oqticks_per_us /= 1000;
return oqticks_per_us;
}
static void cn23xx_setup_global_mac_regs(struct octeon_device *oct)
{
u16 mac_no = oct->pcie_port;
u16 pf_num = oct->pf_num;
u64 reg_val;
u64 temp;
/* programming SRN and TRS for each MAC(0..3) */
dev_dbg(&oct->pci_dev->dev, "%s:Using pcie port %d\n",
__func__, mac_no);
/* By default, mapping all 64 IOQs to a single MACs */
reg_val =
octeon_read_csr64(oct, CN23XX_SLI_PKT_MAC_RINFO64(mac_no, pf_num));
if (oct->rev_id == OCTEON_CN23XX_REV_1_1) {
/* setting SRN <6:0> */
reg_val = pf_num * CN23XX_MAX_RINGS_PER_PF_PASS_1_1;
} else {
/* setting SRN <6:0> */
reg_val = pf_num * CN23XX_MAX_RINGS_PER_PF;
}
/* setting TRS <23:16> */
reg_val = reg_val |
(oct->sriov_info.trs << CN23XX_PKT_MAC_CTL_RINFO_TRS_BIT_POS);
/* setting RPVF <39:32> */
temp = oct->sriov_info.rings_per_vf & 0xff;
reg_val |= (temp << CN23XX_PKT_MAC_CTL_RINFO_RPVF_BIT_POS);
/* setting NVFS <55:48> */
temp = oct->sriov_info.max_vfs & 0xff;
reg_val |= (temp << CN23XX_PKT_MAC_CTL_RINFO_NVFS_BIT_POS);
/* write these settings to MAC register */
octeon_write_csr64(oct, CN23XX_SLI_PKT_MAC_RINFO64(mac_no, pf_num),
reg_val);
dev_dbg(&oct->pci_dev->dev, "SLI_PKT_MAC(%d)_PF(%d)_RINFO : 0x%016llx\n",
mac_no, pf_num, (u64)octeon_read_csr64
(oct, CN23XX_SLI_PKT_MAC_RINFO64(mac_no, pf_num)));
}
static int cn23xx_reset_io_queues(struct octeon_device *oct)
{
int ret_val = 0;
u64 d64;
u32 q_no, srn, ern;
u32 loop = 1000;
srn = oct->sriov_info.pf_srn;
ern = srn + oct->sriov_info.num_pf_rings;
/*As per HRM reg description, s/w cant write 0 to ENB. */
/*to make the queue off, need to set the RST bit. */
/* Reset the Enable bit for all the 64 IQs. */
for (q_no = srn; q_no < ern; q_no++) {
/* set RST bit to 1. This bit applies to both IQ and OQ */
d64 = octeon_read_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
d64 = d64 | CN23XX_PKT_INPUT_CTL_RST;
octeon_write_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no), d64);
}
/*wait until the RST bit is clear or the RST and quite bits are set*/
for (q_no = srn; q_no < ern; q_no++) {
u64 reg_val = octeon_read_csr64(oct,
CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
while ((READ_ONCE(reg_val) & CN23XX_PKT_INPUT_CTL_RST) &&
!(READ_ONCE(reg_val) & CN23XX_PKT_INPUT_CTL_QUIET) &&
loop--) {
WRITE_ONCE(reg_val, octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no)));
}
if (!loop) {
dev_err(&oct->pci_dev->dev,
"clearing the reset reg failed or setting the quiet reg failed for qno: %u\n",
q_no);
return -1;
}
WRITE_ONCE(reg_val, READ_ONCE(reg_val) &
~CN23XX_PKT_INPUT_CTL_RST);
octeon_write_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
READ_ONCE(reg_val));
WRITE_ONCE(reg_val, octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no)));
if (READ_ONCE(reg_val) & CN23XX_PKT_INPUT_CTL_RST) {
dev_err(&oct->pci_dev->dev,
"clearing the reset failed for qno: %u\n",
q_no);
ret_val = -1;
}
}
return ret_val;
}
static int cn23xx_pf_setup_global_input_regs(struct octeon_device *oct)
{
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
struct octeon_instr_queue *iq;
u64 intr_threshold, reg_val;
u32 q_no, ern, srn;
u64 pf_num;
u64 vf_num;
pf_num = oct->pf_num;
srn = oct->sriov_info.pf_srn;
ern = srn + oct->sriov_info.num_pf_rings;
if (cn23xx_reset_io_queues(oct))
return -1;
/** Set the MAC_NUM and PVF_NUM in IQ_PKT_CONTROL reg
* for all queues.Only PF can set these bits.
* bits 29:30 indicate the MAC num.
* bits 32:47 indicate the PVF num.
*/
for (q_no = 0; q_no < ern; q_no++) {
reg_val = oct->pcie_port << CN23XX_PKT_INPUT_CTL_MAC_NUM_POS;
/* for VF assigned queues. */
if (q_no < oct->sriov_info.pf_srn) {
vf_num = q_no / oct->sriov_info.rings_per_vf;
vf_num += 1; /* VF1, VF2,........ */
} else {
vf_num = 0;
}
reg_val |= vf_num << CN23XX_PKT_INPUT_CTL_VF_NUM_POS;
reg_val |= pf_num << CN23XX_PKT_INPUT_CTL_PF_NUM_POS;
octeon_write_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
reg_val);
}
/* Select ES, RO, NS, RDSIZE,DPTR Fomat#0 for
* pf queues
*/
for (q_no = srn; q_no < ern; q_no++) {
void __iomem *inst_cnt_reg;
iq = oct->instr_queue[q_no];
if (iq)
inst_cnt_reg = iq->inst_cnt_reg;
else
inst_cnt_reg = (u8 *)oct->mmio[0].hw_addr +
CN23XX_SLI_IQ_INSTR_COUNT64(q_no);
reg_val =
octeon_read_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
reg_val |= CN23XX_PKT_INPUT_CTL_MASK;
octeon_write_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
reg_val);
/* Set WMARK level for triggering PI_INT */
/* intr_threshold = CN23XX_DEF_IQ_INTR_THRESHOLD & */
intr_threshold = CFG_GET_IQ_INTR_PKT(cn23xx->conf) &
CN23XX_PKT_IN_DONE_WMARK_MASK;
writeq((readq(inst_cnt_reg) &
~(CN23XX_PKT_IN_DONE_WMARK_MASK <<
CN23XX_PKT_IN_DONE_WMARK_BIT_POS)) |
(intr_threshold << CN23XX_PKT_IN_DONE_WMARK_BIT_POS),
inst_cnt_reg);
}
return 0;
}
static void cn23xx_pf_setup_global_output_regs(struct octeon_device *oct)
{
u32 reg_val;
u32 q_no, ern, srn;
u64 time_threshold;
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
srn = oct->sriov_info.pf_srn;
ern = srn + oct->sriov_info.num_pf_rings;
if (CFG_GET_IS_SLI_BP_ON(cn23xx->conf)) {
octeon_write_csr64(oct, CN23XX_SLI_OQ_WMARK, 32);
} else {
/** Set Output queue watermark to 0 to disable backpressure */
octeon_write_csr64(oct, CN23XX_SLI_OQ_WMARK, 0);
}
for (q_no = srn; q_no < ern; q_no++) {
reg_val = octeon_read_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(q_no));
/* set DPTR */
reg_val |= CN23XX_PKT_OUTPUT_CTL_DPTR;
/* reset BMODE */
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_BMODE);
/* No Relaxed Ordering, No Snoop, 64-bit Byte swap
* for Output Queue ScatterList
* reset ROR_P, NSR_P
*/
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_ROR_P);
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_NSR_P);
#ifdef __LITTLE_ENDIAN_BITFIELD
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_ES_P);
#else
reg_val |= (CN23XX_PKT_OUTPUT_CTL_ES_P);
#endif
/* No Relaxed Ordering, No Snoop, 64-bit Byte swap
* for Output Queue Data
* reset ROR, NSR
*/
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_ROR);
reg_val &= ~(CN23XX_PKT_OUTPUT_CTL_NSR);
/* set the ES bit */
reg_val |= (CN23XX_PKT_OUTPUT_CTL_ES);
/* write all the selected settings */
octeon_write_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(q_no), reg_val);
/* Enabling these interrupt in oct->fn_list.enable_interrupt()
* routine which called after IOQ init.
* Set up interrupt packet and time thresholds
* for all the OQs
*/
time_threshold = cn23xx_pf_get_oq_ticks(
oct, (u32)CFG_GET_OQ_INTR_TIME(cn23xx->conf));
octeon_write_csr64(oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(q_no),
(CFG_GET_OQ_INTR_PKT(cn23xx->conf) |
(time_threshold << 32)));
}
/** Setting the water mark level for pko back pressure **/
writeq(0x40, (u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_OQ_WMARK);
/** Disabling setting OQs in reset when ring has no dorebells
* enabling this will cause of head of line blocking
*/
/* Do it only for pass1.1. and pass1.2 */
if ((oct->rev_id == OCTEON_CN23XX_REV_1_0) ||
(oct->rev_id == OCTEON_CN23XX_REV_1_1))
writeq(readq((u8 *)oct->mmio[0].hw_addr +
CN23XX_SLI_GBL_CONTROL) | 0x2,
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_GBL_CONTROL);
/** Enable channel-level backpressure */
if (oct->pf_num)
writeq(0xffffffffffffffffULL,
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_OUT_BP_EN2_W1S);
else
writeq(0xffffffffffffffffULL,
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_OUT_BP_EN_W1S);
}
static int cn23xx_setup_pf_device_regs(struct octeon_device *oct)
{
cn23xx_enable_error_reporting(oct);
/* program the MAC(0..3)_RINFO before setting up input/output regs */
cn23xx_setup_global_mac_regs(oct);
if (cn23xx_pf_setup_global_input_regs(oct))
return -1;
cn23xx_pf_setup_global_output_regs(oct);
/* Default error timeout value should be 0x200000 to avoid host hang
* when reads invalid register
*/
octeon_write_csr64(oct, CN23XX_SLI_WINDOW_CTL,
CN23XX_SLI_WINDOW_CTL_DEFAULT);
/* set SLI_PKT_IN_JABBER to handle large VXLAN packets */
octeon_write_csr64(oct, CN23XX_SLI_PKT_IN_JABBER, CN23XX_INPUT_JABBER);
return 0;
}
static void cn23xx_setup_iq_regs(struct octeon_device *oct, u32 iq_no)
{
struct octeon_instr_queue *iq = oct->instr_queue[iq_no];
u64 pkt_in_done;
iq_no += oct->sriov_info.pf_srn;
/* Write the start of the input queue's ring and its size */
octeon_write_csr64(oct, CN23XX_SLI_IQ_BASE_ADDR64(iq_no),
iq->base_addr_dma);
octeon_write_csr(oct, CN23XX_SLI_IQ_SIZE(iq_no), iq->max_count);
/* Remember the doorbell & instruction count register addr
* for this queue
*/
iq->doorbell_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_IQ_DOORBELL(iq_no);
iq->inst_cnt_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_IQ_INSTR_COUNT64(iq_no);
dev_dbg(&oct->pci_dev->dev, "InstQ[%d]:dbell reg @ 0x%p instcnt_reg @ 0x%p\n",
iq_no, iq->doorbell_reg, iq->inst_cnt_reg);
/* Store the current instruction counter (used in flush_iq
* calculation)
*/
pkt_in_done = readq(iq->inst_cnt_reg);
if (oct->msix_on) {
/* Set CINT_ENB to enable IQ interrupt */
writeq((pkt_in_done | CN23XX_INTR_CINT_ENB),
iq->inst_cnt_reg);
} else {
/* Clear the count by writing back what we read, but don't
* enable interrupts
*/
writeq(pkt_in_done, iq->inst_cnt_reg);
}
iq->reset_instr_cnt = 0;
}
static void cn23xx_setup_oq_regs(struct octeon_device *oct, u32 oq_no)
{
u32 reg_val;
struct octeon_droq *droq = oct->droq[oq_no];
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
u64 time_threshold;
u64 cnt_threshold;
oq_no += oct->sriov_info.pf_srn;
octeon_write_csr64(oct, CN23XX_SLI_OQ_BASE_ADDR64(oq_no),
droq->desc_ring_dma);
octeon_write_csr(oct, CN23XX_SLI_OQ_SIZE(oq_no), droq->max_count);
octeon_write_csr(oct, CN23XX_SLI_OQ_BUFF_INFO_SIZE(oq_no),
droq->buffer_size);
/* Get the mapped address of the pkt_sent and pkts_credit regs */
droq->pkts_sent_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_OQ_PKTS_SENT(oq_no);
droq->pkts_credit_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_OQ_PKTS_CREDIT(oq_no);
if (!oct->msix_on) {
/* Enable this output queue to generate Packet Timer Interrupt
*/
reg_val =
octeon_read_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(oq_no));
reg_val |= CN23XX_PKT_OUTPUT_CTL_TENB;
octeon_write_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(oq_no),
reg_val);
/* Enable this output queue to generate Packet Count Interrupt
*/
reg_val =
octeon_read_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(oq_no));
reg_val |= CN23XX_PKT_OUTPUT_CTL_CENB;
octeon_write_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(oq_no),
reg_val);
} else {
time_threshold = cn23xx_pf_get_oq_ticks(
oct, (u32)CFG_GET_OQ_INTR_TIME(cn23xx->conf));
cnt_threshold = (u32)CFG_GET_OQ_INTR_PKT(cn23xx->conf);
octeon_write_csr64(
oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(oq_no),
((time_threshold << 32 | cnt_threshold)));
}
}
static void cn23xx_pf_mbox_thread(struct work_struct *work)
{
struct cavium_wk *wk = (struct cavium_wk *)work;
struct octeon_mbox *mbox = (struct octeon_mbox *)wk->ctxptr;
struct octeon_device *oct = mbox->oct_dev;
u64 mbox_int_val, val64;
u32 q_no, i;
if (oct->rev_id < OCTEON_CN23XX_REV_1_1) {
/*read and clear by writing 1*/
mbox_int_val = readq(mbox->mbox_int_reg);
writeq(mbox_int_val, mbox->mbox_int_reg);
for (i = 0; i < oct->sriov_info.num_vfs_alloced; i++) {
q_no = i * oct->sriov_info.rings_per_vf;
val64 = readq(oct->mbox[q_no]->mbox_write_reg);
if (val64 && (val64 != OCTEON_PFVFACK)) {
if (octeon_mbox_read(oct->mbox[q_no]))
octeon_mbox_process_message(
oct->mbox[q_no]);
}
}
schedule_delayed_work(&wk->work, msecs_to_jiffies(10));
} else {
octeon_mbox_process_message(mbox);
}
}
static int cn23xx_setup_pf_mbox(struct octeon_device *oct)
{
struct octeon_mbox *mbox = NULL;
u16 mac_no = oct->pcie_port;
u16 pf_num = oct->pf_num;
u32 q_no, i;
if (!oct->sriov_info.max_vfs)
return 0;
for (i = 0; i < oct->sriov_info.max_vfs; i++) {
q_no = i * oct->sriov_info.rings_per_vf;
mbox = vmalloc(sizeof(*mbox));
if (!mbox)
goto free_mbox;
memset(mbox, 0, sizeof(struct octeon_mbox));
spin_lock_init(&mbox->lock);
mbox->oct_dev = oct;
mbox->q_no = q_no;
mbox->state = OCTEON_MBOX_STATE_IDLE;
/* PF mbox interrupt reg */
mbox->mbox_int_reg = (u8 *)oct->mmio[0].hw_addr +
CN23XX_SLI_MAC_PF_MBOX_INT(mac_no, pf_num);
/* PF writes into SIG0 reg */
mbox->mbox_write_reg = (u8 *)oct->mmio[0].hw_addr +
CN23XX_SLI_PKT_PF_VF_MBOX_SIG(q_no, 0);
/* PF reads from SIG1 reg */
mbox->mbox_read_reg = (u8 *)oct->mmio[0].hw_addr +
CN23XX_SLI_PKT_PF_VF_MBOX_SIG(q_no, 1);
/*Mail Box Thread creation*/
INIT_DELAYED_WORK(&mbox->mbox_poll_wk.work,
cn23xx_pf_mbox_thread);
mbox->mbox_poll_wk.ctxptr = (void *)mbox;
oct->mbox[q_no] = mbox;
writeq(OCTEON_PFVFSIG, mbox->mbox_read_reg);
}
if (oct->rev_id < OCTEON_CN23XX_REV_1_1)
schedule_delayed_work(&oct->mbox[0]->mbox_poll_wk.work,
msecs_to_jiffies(0));
return 0;
free_mbox:
while (i) {
i--;
vfree(oct->mbox[i]);
}
return 1;
}
static int cn23xx_free_pf_mbox(struct octeon_device *oct)
{
u32 q_no, i;
if (!oct->sriov_info.max_vfs)
return 0;
for (i = 0; i < oct->sriov_info.max_vfs; i++) {
q_no = i * oct->sriov_info.rings_per_vf;
cancel_delayed_work_sync(
&oct->mbox[q_no]->mbox_poll_wk.work);
vfree(oct->mbox[q_no]);
}
return 0;
}
static int cn23xx_enable_io_queues(struct octeon_device *oct)
{
u64 reg_val;
u32 srn, ern, q_no;
u32 loop = 1000;
srn = oct->sriov_info.pf_srn;
ern = srn + oct->num_iqs;
for (q_no = srn; q_no < ern; q_no++) {
/* set the corresponding IQ IS_64B bit */
if (oct->io_qmask.iq64B & BIT_ULL(q_no - srn)) {
reg_val = octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
reg_val = reg_val | CN23XX_PKT_INPUT_CTL_IS_64B;
octeon_write_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no), reg_val);
}
/* set the corresponding IQ ENB bit */
if (oct->io_qmask.iq & BIT_ULL(q_no - srn)) {
/* IOQs are in reset by default in PEM2 mode,
* clearing reset bit
*/
reg_val = octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
if (reg_val & CN23XX_PKT_INPUT_CTL_RST) {
while ((reg_val & CN23XX_PKT_INPUT_CTL_RST) &&
!(reg_val &
CN23XX_PKT_INPUT_CTL_QUIET) &&
--loop) {
reg_val = octeon_read_csr64(
oct,
CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
}
if (!loop) {
dev_err(&oct->pci_dev->dev,
"clearing the reset reg failed or setting the quiet reg failed for qno: %u\n",
q_no);
return -1;
}
reg_val = reg_val & ~CN23XX_PKT_INPUT_CTL_RST;
octeon_write_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
reg_val);
reg_val = octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
if (reg_val & CN23XX_PKT_INPUT_CTL_RST) {
dev_err(&oct->pci_dev->dev,
"clearing the reset failed for qno: %u\n",
q_no);
return -1;
}
}
reg_val = octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
reg_val = reg_val | CN23XX_PKT_INPUT_CTL_RING_ENB;
octeon_write_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no), reg_val);
}
}
for (q_no = srn; q_no < ern; q_no++) {
u32 reg_val;
/* set the corresponding OQ ENB bit */
if (oct->io_qmask.oq & BIT_ULL(q_no - srn)) {
reg_val = octeon_read_csr(
oct, CN23XX_SLI_OQ_PKT_CONTROL(q_no));
reg_val = reg_val | CN23XX_PKT_OUTPUT_CTL_RING_ENB;
octeon_write_csr(oct, CN23XX_SLI_OQ_PKT_CONTROL(q_no),
reg_val);
}
}
return 0;
}
static void cn23xx_disable_io_queues(struct octeon_device *oct)
{
int q_no, loop;
u64 d64;
u32 d32;
u32 srn, ern;
srn = oct->sriov_info.pf_srn;
ern = srn + oct->num_iqs;
/*** Disable Input Queues. ***/
for (q_no = srn; q_no < ern; q_no++) {
loop = HZ;
/* start the Reset for a particular ring */
WRITE_ONCE(d64, octeon_read_csr64(
oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no)));
WRITE_ONCE(d64, READ_ONCE(d64) &
(~(CN23XX_PKT_INPUT_CTL_RING_ENB)));
WRITE_ONCE(d64, READ_ONCE(d64) | CN23XX_PKT_INPUT_CTL_RST);
octeon_write_csr64(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
READ_ONCE(d64));
/* Wait until hardware indicates that the particular IQ
* is out of reset.
*/
WRITE_ONCE(d64, octeon_read_csr64(
oct, CN23XX_SLI_PKT_IOQ_RING_RST));
while (!(READ_ONCE(d64) & BIT_ULL(q_no)) && loop--) {
WRITE_ONCE(d64, octeon_read_csr64(
oct, CN23XX_SLI_PKT_IOQ_RING_RST));
schedule_timeout_uninterruptible(1);
}
/* Reset the doorbell register for this Input Queue. */
octeon_write_csr(oct, CN23XX_SLI_IQ_DOORBELL(q_no), 0xFFFFFFFF);
while (octeon_read_csr64(oct, CN23XX_SLI_IQ_DOORBELL(q_no)) &&
loop--) {
schedule_timeout_uninterruptible(1);
}
}
/*** Disable Output Queues. ***/
for (q_no = srn; q_no < ern; q_no++) {
loop = HZ;
/* Wait until hardware indicates that the particular IQ
* is out of reset.It given that SLI_PKT_RING_RST is
* common for both IQs and OQs
*/
WRITE_ONCE(d64, octeon_read_csr64(
oct, CN23XX_SLI_PKT_IOQ_RING_RST));
while (!(READ_ONCE(d64) & BIT_ULL(q_no)) && loop--) {
WRITE_ONCE(d64, octeon_read_csr64(
oct, CN23XX_SLI_PKT_IOQ_RING_RST));
schedule_timeout_uninterruptible(1);
}
/* Reset the doorbell register for this Output Queue. */
octeon_write_csr(oct, CN23XX_SLI_OQ_PKTS_CREDIT(q_no),
0xFFFFFFFF);
while (octeon_read_csr64(oct,
CN23XX_SLI_OQ_PKTS_CREDIT(q_no)) &&
loop--) {
schedule_timeout_uninterruptible(1);
}
/* clear the SLI_PKT(0..63)_CNTS[CNT] reg value */
WRITE_ONCE(d32, octeon_read_csr(
oct, CN23XX_SLI_OQ_PKTS_SENT(q_no)));
octeon_write_csr(oct, CN23XX_SLI_OQ_PKTS_SENT(q_no),
READ_ONCE(d32));
}
}
static u64 cn23xx_pf_msix_interrupt_handler(void *dev)
{
struct octeon_ioq_vector *ioq_vector = (struct octeon_ioq_vector *)dev;
struct octeon_device *oct = ioq_vector->oct_dev;
u64 pkts_sent;
u64 ret = 0;
struct octeon_droq *droq = oct->droq[ioq_vector->droq_index];
dev_dbg(&oct->pci_dev->dev, "In %s octeon_dev @ %p\n", __func__, oct);
if (!droq) {
dev_err(&oct->pci_dev->dev, "23XX bringup FIXME: oct pfnum:%d ioq_vector->ioq_num :%d droq is NULL\n",
oct->pf_num, ioq_vector->ioq_num);
return 0;
}
pkts_sent = readq(droq->pkts_sent_reg);
/* If our device has interrupted, then proceed. Also check
* for all f's if interrupt was triggered on an error
* and the PCI read fails.
*/
if (!pkts_sent || (pkts_sent == 0xFFFFFFFFFFFFFFFFULL))
return ret;
/* Write count reg in sli_pkt_cnts to clear these int.*/
if ((pkts_sent & CN23XX_INTR_PO_INT) ||
(pkts_sent & CN23XX_INTR_PI_INT)) {
if (pkts_sent & CN23XX_INTR_PO_INT)
ret |= MSIX_PO_INT;
}
if (pkts_sent & CN23XX_INTR_PI_INT)
/* We will clear the count when we update the read_index. */
ret |= MSIX_PI_INT;
/* Never need to handle msix mbox intr for pf. They arrive on the last
* msix
*/
return ret;
}
static void cn23xx_handle_pf_mbox_intr(struct octeon_device *oct)
{
struct delayed_work *work;
u64 mbox_int_val;
u32 i, q_no;
mbox_int_val = readq(oct->mbox[0]->mbox_int_reg);
for (i = 0; i < oct->sriov_info.num_vfs_alloced; i++) {
q_no = i * oct->sriov_info.rings_per_vf;
if (mbox_int_val & BIT_ULL(q_no)) {
writeq(BIT_ULL(q_no),
oct->mbox[0]->mbox_int_reg);
if (octeon_mbox_read(oct->mbox[q_no])) {
work = &oct->mbox[q_no]->mbox_poll_wk.work;
schedule_delayed_work(work,
msecs_to_jiffies(0));
}
}
}
}
static irqreturn_t cn23xx_interrupt_handler(void *dev)
{
struct octeon_device *oct = (struct octeon_device *)dev;
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
u64 intr64;
dev_dbg(&oct->pci_dev->dev, "In %s octeon_dev @ %p\n", __func__, oct);
intr64 = readq(cn23xx->intr_sum_reg64);
oct->int_status = 0;
if (intr64 & CN23XX_INTR_ERR)
dev_err(&oct->pci_dev->dev, "OCTEON[%d]: Error Intr: 0x%016llx\n",
oct->octeon_id, CVM_CAST64(intr64));
/* When VFs write into MBOX_SIG2 reg,these intr is set in PF */
if (intr64 & CN23XX_INTR_VF_MBOX)
cn23xx_handle_pf_mbox_intr(oct);
if (oct->msix_on != LIO_FLAG_MSIX_ENABLED) {
if (intr64 & CN23XX_INTR_PKT_DATA)
oct->int_status |= OCT_DEV_INTR_PKT_DATA;
}
if (intr64 & (CN23XX_INTR_DMA0_FORCE))
oct->int_status |= OCT_DEV_INTR_DMA0_FORCE;
if (intr64 & (CN23XX_INTR_DMA1_FORCE))
oct->int_status |= OCT_DEV_INTR_DMA1_FORCE;
/* Clear the current interrupts */
writeq(intr64, cn23xx->intr_sum_reg64);
return IRQ_HANDLED;
}
static void cn23xx_bar1_idx_setup(struct octeon_device *oct, u64 core_addr,
u32 idx, int valid)
{
u64 bar1;
u64 reg_adr;
if (!valid) {
reg_adr = lio_pci_readq(
oct, CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
WRITE_ONCE(bar1, reg_adr);
lio_pci_writeq(oct, (READ_ONCE(bar1) & 0xFFFFFFFEULL),
CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
reg_adr = lio_pci_readq(
oct, CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
WRITE_ONCE(bar1, reg_adr);
return;
}
/* The PEM(0..3)_BAR1_INDEX(0..15)[ADDR_IDX]<23:4> stores
* bits <41:22> of the Core Addr
*/
lio_pci_writeq(oct, (((core_addr >> 22) << 4) | PCI_BAR1_MASK),
CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
WRITE_ONCE(bar1, lio_pci_readq(
oct, CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx)));
}
static void cn23xx_bar1_idx_write(struct octeon_device *oct, u32 idx, u32 mask)
{
lio_pci_writeq(oct, mask,
CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
}
static u32 cn23xx_bar1_idx_read(struct octeon_device *oct, u32 idx)
{
return (u32)lio_pci_readq(
oct, CN23XX_PEM_BAR1_INDEX_REG(oct->pcie_port, idx));
}
/* always call with lock held */
static u32 cn23xx_update_read_index(struct octeon_instr_queue *iq)
{
u32 new_idx;
u32 last_done;
u32 pkt_in_done = readl(iq->inst_cnt_reg);
last_done = pkt_in_done - iq->pkt_in_done;
iq->pkt_in_done = pkt_in_done;
/* Modulo of the new index with the IQ size will give us
* the new index. The iq->reset_instr_cnt is always zero for
* cn23xx, so no extra adjustments are needed.
*/
new_idx = (iq->octeon_read_index +
(u32)(last_done & CN23XX_PKT_IN_DONE_CNT_MASK)) %
iq->max_count;
return new_idx;
}
static void cn23xx_enable_pf_interrupt(struct octeon_device *oct, u8 intr_flag)
{
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
u64 intr_val = 0;
/* Divide the single write to multiple writes based on the flag. */
/* Enable Interrupt */
if (intr_flag == OCTEON_ALL_INTR) {
writeq(cn23xx->intr_mask64, cn23xx->intr_enb_reg64);
} else if (intr_flag & OCTEON_OUTPUT_INTR) {
intr_val = readq(cn23xx->intr_enb_reg64);
intr_val |= CN23XX_INTR_PKT_DATA;
writeq(intr_val, cn23xx->intr_enb_reg64);
} else if ((intr_flag & OCTEON_MBOX_INTR) &&
(oct->sriov_info.max_vfs > 0)) {
if (oct->rev_id >= OCTEON_CN23XX_REV_1_1) {
intr_val = readq(cn23xx->intr_enb_reg64);
intr_val |= CN23XX_INTR_VF_MBOX;
writeq(intr_val, cn23xx->intr_enb_reg64);
}
}
}
static void cn23xx_disable_pf_interrupt(struct octeon_device *oct, u8 intr_flag)
{
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
u64 intr_val = 0;
/* Disable Interrupts */
if (intr_flag == OCTEON_ALL_INTR) {
writeq(0, cn23xx->intr_enb_reg64);
} else if (intr_flag & OCTEON_OUTPUT_INTR) {
intr_val = readq(cn23xx->intr_enb_reg64);
intr_val &= ~CN23XX_INTR_PKT_DATA;
writeq(intr_val, cn23xx->intr_enb_reg64);
} else if ((intr_flag & OCTEON_MBOX_INTR) &&
(oct->sriov_info.max_vfs > 0)) {
if (oct->rev_id >= OCTEON_CN23XX_REV_1_1) {
intr_val = readq(cn23xx->intr_enb_reg64);
intr_val &= ~CN23XX_INTR_VF_MBOX;
writeq(intr_val, cn23xx->intr_enb_reg64);
}
}
}
static void cn23xx_get_pcie_qlmport(struct octeon_device *oct)
{
oct->pcie_port = (octeon_read_csr(oct, CN23XX_SLI_MAC_NUMBER)) & 0xff;
dev_dbg(&oct->pci_dev->dev, "OCTEON: CN23xx uses PCIE Port %d\n",
oct->pcie_port);
}
static int cn23xx_get_pf_num(struct octeon_device *oct)
{
u32 fdl_bit = 0;
u64 pkt0_in_ctl, d64;
int pfnum, mac, trs, ret;
ret = 0;
/** Read Function Dependency Link reg to get the function number */
if (pci_read_config_dword(oct->pci_dev, CN23XX_PCIE_SRIOV_FDL,
&fdl_bit) == 0) {
oct->pf_num = ((fdl_bit >> CN23XX_PCIE_SRIOV_FDL_BIT_POS) &
CN23XX_PCIE_SRIOV_FDL_MASK);
} else {
ret = EINVAL;
/* Under some virtual environments, extended PCI regs are
* inaccessible, in which case the above read will have failed.
* In this case, read the PF number from the
* SLI_PKT0_INPUT_CONTROL reg (written by f/w)
*/
pkt0_in_ctl = octeon_read_csr64(oct,
CN23XX_SLI_IQ_PKT_CONTROL64(0));
pfnum = (pkt0_in_ctl >> CN23XX_PKT_INPUT_CTL_PF_NUM_POS) &
CN23XX_PKT_INPUT_CTL_PF_NUM_MASK;
mac = (octeon_read_csr(oct, CN23XX_SLI_MAC_NUMBER)) & 0xff;
/* validate PF num by reading RINFO; f/w writes RINFO.trs == 1*/
d64 = octeon_read_csr64(oct,
CN23XX_SLI_PKT_MAC_RINFO64(mac, pfnum));
trs = (int)(d64 >> CN23XX_PKT_MAC_CTL_RINFO_TRS_BIT_POS) & 0xff;
if (trs == 1) {
dev_err(&oct->pci_dev->dev,
"OCTEON: error reading PCI cfg space pfnum, re-read %u\n",
pfnum);
oct->pf_num = pfnum;
ret = 0;
} else {
dev_err(&oct->pci_dev->dev,
"OCTEON: error reading PCI cfg space pfnum; could not ascertain PF number\n");
}
}
return ret;
}
static void cn23xx_setup_reg_address(struct octeon_device *oct)
{
u8 __iomem *bar0_pciaddr = oct->mmio[0].hw_addr;
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
oct->reg_list.pci_win_wr_addr_hi =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_ADDR_HI);
oct->reg_list.pci_win_wr_addr_lo =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_ADDR_LO);
oct->reg_list.pci_win_wr_addr =
(u64 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_ADDR64);
oct->reg_list.pci_win_rd_addr_hi =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_ADDR_HI);
oct->reg_list.pci_win_rd_addr_lo =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_ADDR_LO);
oct->reg_list.pci_win_rd_addr =
(u64 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_ADDR64);
oct->reg_list.pci_win_wr_data_hi =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_DATA_HI);
oct->reg_list.pci_win_wr_data_lo =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_DATA_LO);
oct->reg_list.pci_win_wr_data =
(u64 __iomem *)(bar0_pciaddr + CN23XX_WIN_WR_DATA64);
oct->reg_list.pci_win_rd_data_hi =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_DATA_HI);
oct->reg_list.pci_win_rd_data_lo =
(u32 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_DATA_LO);
oct->reg_list.pci_win_rd_data =
(u64 __iomem *)(bar0_pciaddr + CN23XX_WIN_RD_DATA64);
cn23xx_get_pcie_qlmport(oct);
cn23xx->intr_mask64 = CN23XX_INTR_MASK;
if (!oct->msix_on)
cn23xx->intr_mask64 |= CN23XX_INTR_PKT_TIME;
if (oct->rev_id >= OCTEON_CN23XX_REV_1_1)
cn23xx->intr_mask64 |= CN23XX_INTR_VF_MBOX;
cn23xx->intr_sum_reg64 =
bar0_pciaddr +
CN23XX_SLI_MAC_PF_INT_SUM64(oct->pcie_port, oct->pf_num);
cn23xx->intr_enb_reg64 =
bar0_pciaddr +
CN23XX_SLI_MAC_PF_INT_ENB64(oct->pcie_port, oct->pf_num);
}
static int cn23xx_sriov_config(struct octeon_device *oct)
{
struct octeon_cn23xx_pf *cn23xx = (struct octeon_cn23xx_pf *)oct->chip;
u32 max_rings, total_rings, max_vfs, rings_per_vf;
u32 pf_srn, num_pf_rings;
u32 max_possible_vfs;
cn23xx->conf =
(struct octeon_config *)oct_get_config_info(oct, LIO_23XX);
switch (oct->rev_id) {
case OCTEON_CN23XX_REV_1_0:
max_rings = CN23XX_MAX_RINGS_PER_PF_PASS_1_0;
max_possible_vfs = CN23XX_MAX_VFS_PER_PF_PASS_1_0;
break;
case OCTEON_CN23XX_REV_1_1:
max_rings = CN23XX_MAX_RINGS_PER_PF_PASS_1_1;
max_possible_vfs = CN23XX_MAX_VFS_PER_PF_PASS_1_1;
break;
default:
max_rings = CN23XX_MAX_RINGS_PER_PF;
max_possible_vfs = CN23XX_MAX_VFS_PER_PF;
break;
}
if (max_rings <= num_present_cpus())
num_pf_rings = 1;
else
num_pf_rings = num_present_cpus();
#ifdef CONFIG_PCI_IOV
max_vfs = min_t(u32,
(max_rings - num_pf_rings), max_possible_vfs);
rings_per_vf = 1;
#else
max_vfs = 0;
rings_per_vf = 0;
#endif
total_rings = num_pf_rings + max_vfs;
/* the first ring of the pf */
pf_srn = total_rings - num_pf_rings;
oct->sriov_info.trs = total_rings;
oct->sriov_info.max_vfs = max_vfs;
oct->sriov_info.rings_per_vf = rings_per_vf;
oct->sriov_info.pf_srn = pf_srn;
oct->sriov_info.num_pf_rings = num_pf_rings;
dev_notice(&oct->pci_dev->dev, "trs:%d max_vfs:%d rings_per_vf:%d pf_srn:%d num_pf_rings:%d\n",
oct->sriov_info.trs, oct->sriov_info.max_vfs,
oct->sriov_info.rings_per_vf, oct->sriov_info.pf_srn,
oct->sriov_info.num_pf_rings);
oct->sriov_info.sriov_enabled = 0;
return 0;
}
int setup_cn23xx_octeon_pf_device(struct octeon_device *oct)
{
if (octeon_map_pci_barx(oct, 0, 0))
return 1;
if (octeon_map_pci_barx(oct, 1, MAX_BAR1_IOREMAP_SIZE)) {
dev_err(&oct->pci_dev->dev, "%s CN23XX BAR1 map failed\n",
__func__);
octeon_unmap_pci_barx(oct, 0);
return 1;
}
if (cn23xx_get_pf_num(oct) != 0)
return 1;
if (cn23xx_sriov_config(oct)) {
octeon_unmap_pci_barx(oct, 0);
octeon_unmap_pci_barx(oct, 1);
return 1;
}
octeon_write_csr64(oct, CN23XX_SLI_MAC_CREDIT_CNT, 0x3F802080802080ULL);
oct->fn_list.setup_iq_regs = cn23xx_setup_iq_regs;
oct->fn_list.setup_oq_regs = cn23xx_setup_oq_regs;
oct->fn_list.setup_mbox = cn23xx_setup_pf_mbox;
oct->fn_list.free_mbox = cn23xx_free_pf_mbox;
oct->fn_list.process_interrupt_regs = cn23xx_interrupt_handler;
oct->fn_list.msix_interrupt_handler = cn23xx_pf_msix_interrupt_handler;
oct->fn_list.soft_reset = cn23xx_pf_soft_reset;
oct->fn_list.setup_device_regs = cn23xx_setup_pf_device_regs;
oct->fn_list.update_iq_read_idx = cn23xx_update_read_index;
oct->fn_list.bar1_idx_setup = cn23xx_bar1_idx_setup;
oct->fn_list.bar1_idx_write = cn23xx_bar1_idx_write;
oct->fn_list.bar1_idx_read = cn23xx_bar1_idx_read;
oct->fn_list.enable_interrupt = cn23xx_enable_pf_interrupt;
oct->fn_list.disable_interrupt = cn23xx_disable_pf_interrupt;
oct->fn_list.enable_io_queues = cn23xx_enable_io_queues;
oct->fn_list.disable_io_queues = cn23xx_disable_io_queues;
cn23xx_setup_reg_address(oct);
oct->coproc_clock_rate = 1000000ULL * cn23xx_coprocessor_clock(oct);
return 0;
}
int validate_cn23xx_pf_config_info(struct octeon_device *oct,
struct octeon_config *conf23xx)
{
if (CFG_GET_IQ_MAX_Q(conf23xx) > CN23XX_MAX_INPUT_QUEUES) {
dev_err(&oct->pci_dev->dev, "%s: Num IQ (%d) exceeds Max (%d)\n",
__func__, CFG_GET_IQ_MAX_Q(conf23xx),
CN23XX_MAX_INPUT_QUEUES);
return 1;
}
if (CFG_GET_OQ_MAX_Q(conf23xx) > CN23XX_MAX_OUTPUT_QUEUES) {
dev_err(&oct->pci_dev->dev, "%s: Num OQ (%d) exceeds Max (%d)\n",
__func__, CFG_GET_OQ_MAX_Q(conf23xx),
CN23XX_MAX_OUTPUT_QUEUES);
return 1;
}
if (CFG_GET_IQ_INSTR_TYPE(conf23xx) != OCTEON_32BYTE_INSTR &&
CFG_GET_IQ_INSTR_TYPE(conf23xx) != OCTEON_64BYTE_INSTR) {
dev_err(&oct->pci_dev->dev, "%s: Invalid instr type for IQ\n",
__func__);
return 1;
}
if (!CFG_GET_OQ_REFILL_THRESHOLD(conf23xx)) {
dev_err(&oct->pci_dev->dev, "%s: Invalid parameter for OQ\n",
__func__);
return 1;
}
if (!(CFG_GET_OQ_INTR_TIME(conf23xx))) {
dev_err(&oct->pci_dev->dev, "%s: Invalid parameter for OQ\n",
__func__);
return 1;
}
return 0;
}
void cn23xx_dump_iq_regs(struct octeon_device *oct)
{
u32 regval, q_no;
dev_dbg(&oct->pci_dev->dev, "SLI_IQ_DOORBELL_0 [0x%x]: 0x%016llx\n",
CN23XX_SLI_IQ_DOORBELL(0),
CVM_CAST64(octeon_read_csr64
(oct, CN23XX_SLI_IQ_DOORBELL(0))));
dev_dbg(&oct->pci_dev->dev, "SLI_IQ_BASEADDR_0 [0x%x]: 0x%016llx\n",
CN23XX_SLI_IQ_BASE_ADDR64(0),
CVM_CAST64(octeon_read_csr64
(oct, CN23XX_SLI_IQ_BASE_ADDR64(0))));
dev_dbg(&oct->pci_dev->dev, "SLI_IQ_FIFO_RSIZE_0 [0x%x]: 0x%016llx\n",
CN23XX_SLI_IQ_SIZE(0),
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_IQ_SIZE(0))));
dev_dbg(&oct->pci_dev->dev, "SLI_CTL_STATUS [0x%x]: 0x%016llx\n",
CN23XX_SLI_CTL_STATUS,
CVM_CAST64(octeon_read_csr64(oct, CN23XX_SLI_CTL_STATUS)));
for (q_no = 0; q_no < CN23XX_MAX_INPUT_QUEUES; q_no++) {
dev_dbg(&oct->pci_dev->dev, "SLI_PKT[%d]_INPUT_CTL [0x%x]: 0x%016llx\n",
q_no, CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
CVM_CAST64(octeon_read_csr64
(oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no))));
}
pci_read_config_dword(oct->pci_dev, CN23XX_CONFIG_PCIE_DEVCTL, ®val);
dev_dbg(&oct->pci_dev->dev, "Config DevCtl [0x%x]: 0x%08x\n",
CN23XX_CONFIG_PCIE_DEVCTL, regval);
dev_dbg(&oct->pci_dev->dev, "SLI_PRT[%d]_CFG [0x%llx]: 0x%016llx\n",
oct->pcie_port, CN23XX_DPI_SLI_PRTX_CFG(oct->pcie_port),
CVM_CAST64(lio_pci_readq(
oct, CN23XX_DPI_SLI_PRTX_CFG(oct->pcie_port))));
dev_dbg(&oct->pci_dev->dev, "SLI_S2M_PORT[%d]_CTL [0x%x]: 0x%016llx\n",
oct->pcie_port, CN23XX_SLI_S2M_PORTX_CTL(oct->pcie_port),
CVM_CAST64(octeon_read_csr64(
oct, CN23XX_SLI_S2M_PORTX_CTL(oct->pcie_port))));
}
int cn23xx_fw_loaded(struct octeon_device *oct)
{
u64 val;
val = octeon_read_csr64(oct, CN23XX_SLI_SCRATCH1);
return (val >> 1) & 1ULL;
}
void cn23xx_tell_vf_its_macaddr_changed(struct octeon_device *oct, int vfidx,
u8 *mac)
{
if (oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vfidx)) {
struct octeon_mbox_cmd mbox_cmd;
mbox_cmd.msg.u64 = 0;
mbox_cmd.msg.s.type = OCTEON_MBOX_REQUEST;
mbox_cmd.msg.s.resp_needed = 0;
mbox_cmd.msg.s.cmd = OCTEON_PF_CHANGED_VF_MACADDR;
mbox_cmd.msg.s.len = 1;
mbox_cmd.recv_len = 0;
mbox_cmd.recv_status = 0;
mbox_cmd.fn = NULL;
mbox_cmd.fn_arg = 0;
ether_addr_copy(mbox_cmd.msg.s.params, mac);
mbox_cmd.q_no = vfidx * oct->sriov_info.rings_per_vf;
octeon_mbox_write(oct, &mbox_cmd);
}
}
|