forked from beagleboard/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathql4_isr.c
1447 lines (1242 loc) · 39 KB
/
ql4_isr.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
/*
* QLogic iSCSI HBA Driver
* Copyright (c) 2003-2012 QLogic Corporation
*
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#include "ql4_def.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
/**
* qla4xxx_copy_sense - copy sense data into cmd sense buffer
* @ha: Pointer to host adapter structure.
* @sts_entry: Pointer to status entry structure.
* @srb: Pointer to srb structure.
**/
static void qla4xxx_copy_sense(struct scsi_qla_host *ha,
struct status_entry *sts_entry,
struct srb *srb)
{
struct scsi_cmnd *cmd = srb->cmd;
uint16_t sense_len;
memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
sense_len = le16_to_cpu(sts_entry->senseDataByteCnt);
if (sense_len == 0) {
DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%d: %s:"
" sense len 0\n", ha->host_no,
cmd->device->channel, cmd->device->id,
cmd->device->lun, __func__));
ha->status_srb = NULL;
return;
}
/* Save total available sense length,
* not to exceed cmd's sense buffer size */
sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE);
srb->req_sense_ptr = cmd->sense_buffer;
srb->req_sense_len = sense_len;
/* Copy sense from sts_entry pkt */
sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN);
memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len);
DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, "
"ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no,
cmd->device->channel, cmd->device->id,
cmd->device->lun, __func__,
sts_entry->senseData[2] & 0x0f,
sts_entry->senseData[7],
sts_entry->senseData[12],
sts_entry->senseData[13]));
DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len));
srb->flags |= SRB_GOT_SENSE;
/* Update srb, in case a sts_cont pkt follows */
srb->req_sense_ptr += sense_len;
srb->req_sense_len -= sense_len;
if (srb->req_sense_len != 0)
ha->status_srb = srb;
else
ha->status_srb = NULL;
}
/**
* qla4xxx_status_cont_entry - Process a Status Continuations entry.
* @ha: SCSI driver HA context
* @sts_cont: Entry pointer
*
* Extended sense data.
*/
static void
qla4xxx_status_cont_entry(struct scsi_qla_host *ha,
struct status_cont_entry *sts_cont)
{
struct srb *srb = ha->status_srb;
struct scsi_cmnd *cmd;
uint16_t sense_len;
if (srb == NULL)
return;
cmd = srb->cmd;
if (cmd == NULL) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned "
"back to OS srb=%p srb->state:%d\n", ha->host_no,
__func__, srb, srb->state));
ha->status_srb = NULL;
return;
}
/* Copy sense data. */
sense_len = min_t(uint16_t, srb->req_sense_len,
IOCB_MAX_EXT_SENSEDATA_LEN);
memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len);
DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len));
srb->req_sense_ptr += sense_len;
srb->req_sense_len -= sense_len;
/* Place command on done queue. */
if (srb->req_sense_len == 0) {
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
ha->status_srb = NULL;
}
}
/**
* qla4xxx_status_entry - processes status IOCBs
* @ha: Pointer to host adapter structure.
* @sts_entry: Pointer to status entry structure.
**/
static void qla4xxx_status_entry(struct scsi_qla_host *ha,
struct status_entry *sts_entry)
{
uint8_t scsi_status;
struct scsi_cmnd *cmd;
struct srb *srb;
struct ddb_entry *ddb_entry;
uint32_t residual;
srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
if (!srb) {
ql4_printk(KERN_WARNING, ha, "%s invalid status entry: "
"handle=0x%0x, srb=%p\n", __func__,
sts_entry->handle, srb);
if (is_qla80XX(ha))
set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
else
set_bit(DPC_RESET_HA, &ha->dpc_flags);
return;
}
cmd = srb->cmd;
if (cmd == NULL) {
DEBUG2(printk("scsi%ld: %s: Command already returned back to "
"OS pkt->handle=%d srb=%p srb->state:%d\n",
ha->host_no, __func__, sts_entry->handle,
srb, srb->state));
ql4_printk(KERN_WARNING, ha, "Command is NULL:"
" already returned to OS (srb=%p)\n", srb);
return;
}
ddb_entry = srb->ddb;
if (ddb_entry == NULL) {
cmd->result = DID_NO_CONNECT << 16;
goto status_entry_exit;
}
residual = le32_to_cpu(sts_entry->residualByteCnt);
/* Translate ISP error to a Linux SCSI error. */
scsi_status = sts_entry->scsiStatus;
switch (sts_entry->completionStatus) {
case SCS_COMPLETE:
if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
cmd->result = DID_ERROR << 16;
break;
}
if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) {
scsi_set_resid(cmd, residual);
if (!scsi_status && ((scsi_bufflen(cmd) - residual) <
cmd->underflow)) {
cmd->result = DID_ERROR << 16;
DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
"Mid-layer Data underrun0, "
"xferlen = 0x%x, "
"residual = 0x%x\n", ha->host_no,
cmd->device->channel,
cmd->device->id,
cmd->device->lun, __func__,
scsi_bufflen(cmd), residual));
break;
}
}
cmd->result = DID_OK << 16 | scsi_status;
if (scsi_status != SCSI_CHECK_CONDITION)
break;
/* Copy Sense Data into sense buffer. */
qla4xxx_copy_sense(ha, sts_entry, srb);
break;
case SCS_INCOMPLETE:
/* Always set the status to DID_ERROR, since
* all conditions result in that status anyway */
cmd->result = DID_ERROR << 16;
break;
case SCS_RESET_OCCURRED:
DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n",
ha->host_no, cmd->device->channel,
cmd->device->id, cmd->device->lun, __func__));
cmd->result = DID_RESET << 16;
break;
case SCS_ABORTED:
DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n",
ha->host_no, cmd->device->channel,
cmd->device->id, cmd->device->lun, __func__));
cmd->result = DID_RESET << 16;
break;
case SCS_TIMEOUT:
DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n",
ha->host_no, cmd->device->channel,
cmd->device->id, cmd->device->lun));
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
/*
* Mark device missing so that we won't continue to send
* I/O to this device. We should get a ddb state change
* AEN soon.
*/
if (iscsi_is_session_online(ddb_entry->sess))
qla4xxx_mark_device_missing(ddb_entry->sess);
break;
case SCS_DATA_UNDERRUN:
case SCS_DATA_OVERRUN:
if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) ||
(sts_entry->completionStatus == SCS_DATA_OVERRUN)) {
DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n",
ha->host_no,
cmd->device->channel, cmd->device->id,
cmd->device->lun, __func__));
cmd->result = DID_ERROR << 16;
break;
}
scsi_set_resid(cmd, residual);
if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) {
/* Both the firmware and target reported UNDERRUN:
*
* MID-LAYER UNDERFLOW case:
* Some kernels do not properly detect midlayer
* underflow, so we manually check it and return
* ERROR if the minimum required data was not
* received.
*
* ALL OTHER cases:
* Fall thru to check scsi_status
*/
if (!scsi_status && (scsi_bufflen(cmd) - residual) <
cmd->underflow) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld:%d:%d:%d: %s: Mid-layer Data underrun, xferlen = 0x%x,residual = 0x%x\n",
ha->host_no,
cmd->device->channel,
cmd->device->id,
cmd->device->lun, __func__,
scsi_bufflen(cmd),
residual));
cmd->result = DID_ERROR << 16;
break;
}
} else if (scsi_status != SAM_STAT_TASK_SET_FULL &&
scsi_status != SAM_STAT_BUSY) {
/*
* The firmware reports UNDERRUN, but the target does
* not report it:
*
* scsi_status | host_byte device_byte
* | (19:16) (7:0)
* ============= | ========= ===========
* TASK_SET_FULL | DID_OK scsi_status
* BUSY | DID_OK scsi_status
* ALL OTHERS | DID_ERROR scsi_status
*
* Note: If scsi_status is task set full or busy,
* then this else if would fall thru to check the
* scsi_status and return DID_OK.
*/
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld:%d:%d:%d: %s: Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
ha->host_no,
cmd->device->channel,
cmd->device->id,
cmd->device->lun, __func__,
residual,
scsi_bufflen(cmd)));
cmd->result = DID_ERROR << 16 | scsi_status;
goto check_scsi_status;
}
cmd->result = DID_OK << 16 | scsi_status;
check_scsi_status:
if (scsi_status == SAM_STAT_CHECK_CONDITION)
qla4xxx_copy_sense(ha, sts_entry, srb);
break;
case SCS_DEVICE_LOGGED_OUT:
case SCS_DEVICE_UNAVAILABLE:
DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE "
"state: 0x%x\n", ha->host_no,
cmd->device->channel, cmd->device->id,
cmd->device->lun, sts_entry->completionStatus));
/*
* Mark device missing so that we won't continue to
* send I/O to this device. We should get a ddb
* state change AEN soon.
*/
if (iscsi_is_session_online(ddb_entry->sess))
qla4xxx_mark_device_missing(ddb_entry->sess);
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
break;
case SCS_QUEUE_FULL:
/*
* SCSI Mid-Layer handles device queue full
*/
cmd->result = DID_OK << 16 | sts_entry->scsiStatus;
DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected "
"compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
" iResp=%02x\n", ha->host_no, cmd->device->id,
cmd->device->lun, __func__,
sts_entry->completionStatus,
sts_entry->scsiStatus, sts_entry->state_flags,
sts_entry->iscsiFlags,
sts_entry->iscsiResponse));
break;
default:
cmd->result = DID_ERROR << 16;
break;
}
status_entry_exit:
/* complete the request, if not waiting for status_continuation pkt */
srb->cc_stat = sts_entry->completionStatus;
if (ha->status_srb == NULL)
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
}
/**
* qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C)
* @ha: Pointer to host adapter structure.
* @sts_entry: Pointer to status entry structure.
**/
static void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha,
struct passthru_status *sts_entry)
{
struct iscsi_task *task;
struct ddb_entry *ddb_entry;
struct ql4_task_data *task_data;
struct iscsi_cls_conn *cls_conn;
struct iscsi_conn *conn;
itt_t itt;
uint32_t fw_ddb_index;
itt = sts_entry->handle;
fw_ddb_index = le32_to_cpu(sts_entry->target);
ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
if (ddb_entry == NULL) {
ql4_printk(KERN_ERR, ha, "%s: Invalid target index = 0x%x\n",
__func__, sts_entry->target);
return;
}
cls_conn = ddb_entry->conn;
conn = cls_conn->dd_data;
spin_lock(&conn->session->lock);
task = iscsi_itt_to_task(conn, itt);
spin_unlock(&conn->session->lock);
if (task == NULL) {
ql4_printk(KERN_ERR, ha, "%s: Task is NULL\n", __func__);
return;
}
task_data = task->dd_data;
memcpy(&task_data->sts, sts_entry, sizeof(struct passthru_status));
ha->req_q_count += task_data->iocb_req_cnt;
ha->iocb_cnt -= task_data->iocb_req_cnt;
queue_work(ha->task_wq, &task_data->task_work);
}
static struct mrb *qla4xxx_del_mrb_from_active_array(struct scsi_qla_host *ha,
uint32_t index)
{
struct mrb *mrb = NULL;
/* validate handle and remove from active array */
if (index >= MAX_MRB)
return mrb;
mrb = ha->active_mrb_array[index];
ha->active_mrb_array[index] = NULL;
if (!mrb)
return mrb;
/* update counters */
ha->req_q_count += mrb->iocb_cnt;
ha->iocb_cnt -= mrb->iocb_cnt;
return mrb;
}
static void qla4xxx_mbox_status_entry(struct scsi_qla_host *ha,
struct mbox_status_iocb *mbox_sts_entry)
{
struct mrb *mrb;
uint32_t status;
uint32_t data_size;
mrb = qla4xxx_del_mrb_from_active_array(ha,
le32_to_cpu(mbox_sts_entry->handle));
if (mrb == NULL) {
ql4_printk(KERN_WARNING, ha, "%s: mrb[%d] is null\n", __func__,
mbox_sts_entry->handle);
return;
}
switch (mrb->mbox_cmd) {
case MBOX_CMD_PING:
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: mbox_cmd = 0x%x, "
"mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n",
__func__, mrb->mbox_cmd,
mbox_sts_entry->out_mbox[0],
mbox_sts_entry->out_mbox[6]));
if (mbox_sts_entry->out_mbox[0] == MBOX_STS_COMMAND_COMPLETE)
status = ISCSI_PING_SUCCESS;
else
status = mbox_sts_entry->out_mbox[6];
data_size = sizeof(mbox_sts_entry->out_mbox);
qla4xxx_post_ping_evt_work(ha, status, mrb->pid, data_size,
(uint8_t *) mbox_sts_entry->out_mbox);
break;
default:
DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: invalid mbox_cmd = "
"0x%x\n", __func__, mrb->mbox_cmd));
}
kfree(mrb);
return;
}
/**
* qla4xxx_process_response_queue - process response queue completions
* @ha: Pointer to host adapter structure.
*
* This routine process response queue completions in interrupt context.
* Hardware_lock locked upon entry
**/
void qla4xxx_process_response_queue(struct scsi_qla_host *ha)
{
uint32_t count = 0;
struct srb *srb = NULL;
struct status_entry *sts_entry;
/* Process all responses from response queue */
while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) {
sts_entry = (struct status_entry *) ha->response_ptr;
count++;
/* Advance pointers for next entry */
if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) {
ha->response_out = 0;
ha->response_ptr = ha->response_ring;
} else {
ha->response_out++;
ha->response_ptr++;
}
/* process entry */
switch (sts_entry->hdr.entryType) {
case ET_STATUS:
/* Common status */
qla4xxx_status_entry(ha, sts_entry);
break;
case ET_PASSTHRU_STATUS:
if (sts_entry->hdr.systemDefined == SD_ISCSI_PDU)
qla4xxx_passthru_status_entry(ha,
(struct passthru_status *)sts_entry);
else
ql4_printk(KERN_ERR, ha,
"%s: Invalid status received\n",
__func__);
break;
case ET_STATUS_CONTINUATION:
qla4xxx_status_cont_entry(ha,
(struct status_cont_entry *) sts_entry);
break;
case ET_COMMAND:
/* ISP device queue is full. Command not
* accepted by ISP. Queue command for
* later */
srb = qla4xxx_del_from_active_array(ha,
le32_to_cpu(sts_entry->
handle));
if (srb == NULL)
goto exit_prq_invalid_handle;
DEBUG2(printk("scsi%ld: %s: FW device queue full, "
"srb %p\n", ha->host_no, __func__, srb));
/* ETRY normally by sending it back with
* DID_BUS_BUSY */
srb->cmd->result = DID_BUS_BUSY << 16;
kref_put(&srb->srb_ref, qla4xxx_srb_compl);
break;
case ET_CONTINUE:
/* Just throw away the continuation entries */
DEBUG2(printk("scsi%ld: %s: Continuation entry - "
"ignoring\n", ha->host_no, __func__));
break;
case ET_MBOX_STATUS:
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: mbox status IOCB\n", __func__));
qla4xxx_mbox_status_entry(ha,
(struct mbox_status_iocb *)sts_entry);
break;
default:
/*
* Invalid entry in response queue, reset RISC
* firmware.
*/
DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
"response queue \n", ha->host_no,
__func__,
sts_entry->hdr.entryType));
goto exit_prq_error;
}
((struct response *)sts_entry)->signature = RESPONSE_PROCESSED;
wmb();
}
/*
* Tell ISP we're done with response(s). This also clears the interrupt.
*/
ha->isp_ops->complete_iocb(ha);
return;
exit_prq_invalid_handle:
DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
ha->host_no, __func__, srb, sts_entry->hdr.entryType,
sts_entry->completionStatus));
exit_prq_error:
ha->isp_ops->complete_iocb(ha);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
/**
* qla4xxx_isr_decode_mailbox - decodes mailbox status
* @ha: Pointer to host adapter structure.
* @mailbox_status: Mailbox status.
*
* This routine decodes the mailbox status during the ISR.
* Hardware_lock locked upon entry. runs in interrupt context.
**/
static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
uint32_t mbox_status)
{
int i;
uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
__le32 __iomem *mailbox_out;
if (is_qla8032(ha))
mailbox_out = &ha->qla4_83xx_reg->mailbox_out[0];
else if (is_qla8022(ha))
mailbox_out = &ha->qla4_82xx_reg->mailbox_out[0];
else
mailbox_out = &ha->reg->mailbox[0];
if ((mbox_status == MBOX_STS_BUSY) ||
(mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
(mbox_status >> 12 == MBOX_COMPLETION_STATUS)) {
ha->mbox_status[0] = mbox_status;
if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
/*
* Copy all mailbox registers to a temporary
* location and set mailbox command done flag
*/
for (i = 0; i < ha->mbox_status_count; i++)
ha->mbox_status[i] = readl(&mailbox_out[i]);
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags))
complete(&ha->mbx_intr_comp);
}
} else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
mbox_sts[i] = readl(&mailbox_out[i]);
/* Immediately process the AENs that don't require much work.
* Only queue the database_changed AENs */
if (ha->aen_log.count < MAX_AEN_ENTRIES) {
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] =
mbox_sts[i];
ha->aen_log.count++;
}
switch (mbox_status) {
case MBOX_ASTS_SYSTEM_ERROR:
/* Log Mailbox registers */
ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__);
qla4xxx_dump_registers(ha);
if ((is_qla8022(ha) && ql4xdontresethba) ||
(is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n",
ha->host_no, __func__));
} else {
set_bit(AF_GET_CRASH_RECORD, &ha->flags);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
break;
case MBOX_ASTS_REQUEST_TRANSFER_ERROR:
case MBOX_ASTS_RESPONSE_TRANSFER_ERROR:
case MBOX_ASTS_NVRAM_INVALID:
case MBOX_ASTS_IP_ADDRESS_CHANGED:
case MBOX_ASTS_DHCP_LEASE_EXPIRED:
DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "
"Reset HA\n", ha->host_no, mbox_status));
if (is_qla80XX(ha))
set_bit(DPC_RESET_HA_FW_CONTEXT,
&ha->dpc_flags);
else
set_bit(DPC_RESET_HA, &ha->dpc_flags);
break;
case MBOX_ASTS_LINK_UP:
set_bit(AF_LINK_UP, &ha->flags);
if (test_bit(AF_INIT_DONE, &ha->flags))
set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP,
sizeof(mbox_sts),
(uint8_t *) mbox_sts);
break;
case MBOX_ASTS_LINK_DOWN:
clear_bit(AF_LINK_UP, &ha->flags);
if (test_bit(AF_INIT_DONE, &ha->flags))
set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN,
sizeof(mbox_sts),
(uint8_t *) mbox_sts);
break;
case MBOX_ASTS_HEARTBEAT:
ha->seconds_since_last_heartbeat = 0;
break;
case MBOX_ASTS_DHCP_LEASE_ACQUIRED:
DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE "
"ACQUIRED\n", ha->host_no, mbox_status));
set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
break;
case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM:
case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target
* mode
* only */
case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */
case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR:
case MBOX_ASTS_SUBNET_STATE_CHANGE:
case MBOX_ASTS_DUPLICATE_IP:
/* No action */
DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no,
mbox_status));
break;
case MBOX_ASTS_IP_ADDR_STATE_CHANGED:
printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, "
"mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0],
mbox_sts[2], mbox_sts[3]);
/* mbox_sts[2] = Old ACB state
* mbox_sts[3] = new ACB state */
if ((mbox_sts[3] == ACB_STATE_VALID) &&
((mbox_sts[2] == ACB_STATE_TENTATIVE) ||
(mbox_sts[2] == ACB_STATE_ACQUIRING)))
set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) &&
(mbox_sts[2] == ACB_STATE_VALID)) {
if (is_qla80XX(ha))
set_bit(DPC_RESET_HA_FW_CONTEXT,
&ha->dpc_flags);
else
set_bit(DPC_RESET_HA, &ha->dpc_flags);
} else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED))
complete(&ha->disable_acb_comp);
break;
case MBOX_ASTS_MAC_ADDRESS_CHANGED:
case MBOX_ASTS_DNS:
/* No action */
DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, "
"mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
ha->host_no, mbox_sts[0],
mbox_sts[1], mbox_sts[2]));
break;
case MBOX_ASTS_SELF_TEST_FAILED:
case MBOX_ASTS_LOGIN_FAILED:
/* No action */
DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
"mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
ha->host_no, mbox_sts[0], mbox_sts[1],
mbox_sts[2], mbox_sts[3]));
break;
case MBOX_ASTS_DATABASE_CHANGED:
/* Queue AEN information and process it in the DPC
* routine */
if (ha->aen_q_count > 0) {
/* decrement available counter */
ha->aen_q_count--;
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
ha->aen_q[ha->aen_in].mbox_sts[i] =
mbox_sts[i];
/* print debug message */
DEBUG2(printk("scsi%ld: AEN[%d] %04x queued "
"mb1:0x%x mb2:0x%x mb3:0x%x "
"mb4:0x%x mb5:0x%x\n",
ha->host_no, ha->aen_in,
mbox_sts[0], mbox_sts[1],
mbox_sts[2], mbox_sts[3],
mbox_sts[4], mbox_sts[5]));
/* advance pointer */
ha->aen_in++;
if (ha->aen_in == MAX_AEN_ENTRIES)
ha->aen_in = 0;
/* The DPC routine will process the aen */
set_bit(DPC_AEN, &ha->dpc_flags);
} else {
DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
"overflowed! AEN LOST!!\n",
ha->host_no, __func__,
mbox_sts[0]));
DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
ha->host_no));
for (i = 0; i < MAX_AEN_ENTRIES; i++) {
DEBUG2(printk("AEN[%d] %04x %04x %04x "
"%04x\n", i, mbox_sts[0],
mbox_sts[1], mbox_sts[2],
mbox_sts[3]));
}
}
break;
case MBOX_ASTS_TXSCVR_INSERTED:
DEBUG2(printk(KERN_WARNING
"scsi%ld: AEN %04x Transceiver"
" inserted\n", ha->host_no, mbox_sts[0]));
break;
case MBOX_ASTS_TXSCVR_REMOVED:
DEBUG2(printk(KERN_WARNING
"scsi%ld: AEN %04x Transceiver"
" removed\n", ha->host_no, mbox_sts[0]));
break;
case MBOX_ASTS_IDC_NOTIFY:
{
uint32_t opcode;
if (is_qla8032(ha)) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x\n",
ha->host_no, mbox_sts[0],
mbox_sts[1], mbox_sts[2],
mbox_sts[3], mbox_sts[4]));
opcode = mbox_sts[1] >> 16;
if ((opcode == MBOX_CMD_SET_PORT_CONFIG) ||
(opcode == MBOX_CMD_PORT_RESET)) {
set_bit(DPC_POST_IDC_ACK,
&ha->dpc_flags);
ha->idc_info.request_desc = mbox_sts[1];
ha->idc_info.info1 = mbox_sts[2];
ha->idc_info.info2 = mbox_sts[3];
ha->idc_info.info3 = mbox_sts[4];
qla4xxx_wake_dpc(ha);
}
}
break;
}
case MBOX_ASTS_IDC_COMPLETE:
if (is_qla8032(ha)) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x\n",
ha->host_no, mbox_sts[0],
mbox_sts[1], mbox_sts[2],
mbox_sts[3], mbox_sts[4]));
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi:%ld: AEN %04x IDC Complete notification\n",
ha->host_no, mbox_sts[0]));
}
break;
default:
DEBUG2(printk(KERN_WARNING
"scsi%ld: AEN %04x UNKNOWN\n",
ha->host_no, mbox_sts[0]));
break;
}
} else {
DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
ha->host_no, mbox_status));
ha->mbox_status[0] = mbox_status;
}
}
void qla4_83xx_interrupt_service_routine(struct scsi_qla_host *ha,
uint32_t intr_status)
{
/* Process mailbox/asynch event interrupt.*/
if (intr_status) {
qla4xxx_isr_decode_mailbox(ha,
readl(&ha->qla4_83xx_reg->mailbox_out[0]));
/* clear the interrupt */
writel(0, &ha->qla4_83xx_reg->risc_intr);
} else {
qla4xxx_process_response_queue(ha);
}
/* clear the interrupt */
writel(0, &ha->qla4_83xx_reg->mb_int_mask);
}
/**
* qla4_82xx_interrupt_service_routine - isr
* @ha: pointer to host adapter structure.
*
* This is the main interrupt service routine.
* hardware_lock locked upon entry. runs in interrupt context.
**/
void qla4_82xx_interrupt_service_routine(struct scsi_qla_host *ha,
uint32_t intr_status)
{
/* Process response queue interrupt. */
if (intr_status & HSRX_RISC_IOCB_INT)
qla4xxx_process_response_queue(ha);
/* Process mailbox/asynch event interrupt.*/
if (intr_status & HSRX_RISC_MB_INT)
qla4xxx_isr_decode_mailbox(ha,
readl(&ha->qla4_82xx_reg->mailbox_out[0]));
/* clear the interrupt */
writel(0, &ha->qla4_82xx_reg->host_int);
readl(&ha->qla4_82xx_reg->host_int);
}
/**
* qla4xxx_interrupt_service_routine - isr
* @ha: pointer to host adapter structure.
*
* This is the main interrupt service routine.
* hardware_lock locked upon entry. runs in interrupt context.
**/
void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
uint32_t intr_status)
{
/* Process response queue interrupt. */
if (intr_status & CSR_SCSI_COMPLETION_INTR)
qla4xxx_process_response_queue(ha);
/* Process mailbox/asynch event interrupt.*/
if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
qla4xxx_isr_decode_mailbox(ha,
readl(&ha->reg->mailbox[0]));
/* Clear Mailbox Interrupt */
writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
&ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
}
}
/**
* qla4_82xx_spurious_interrupt - processes spurious interrupt
* @ha: pointer to host adapter structure.
* @reqs_count: .
*
**/
static void qla4_82xx_spurious_interrupt(struct scsi_qla_host *ha,
uint8_t reqs_count)
{
if (reqs_count)
return;
DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n"));
if (is_qla8022(ha)) {
writel(0, &ha->qla4_82xx_reg->host_int);
if (test_bit(AF_INTx_ENABLED, &ha->flags))
qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
0xfbff);
}
ha->spurious_int_count++;
}
/**
* qla4xxx_intr_handler - hardware interrupt handler.
* @irq: Unused
* @dev_id: Pointer to host adapter structure
**/
irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
{
struct scsi_qla_host *ha;
uint32_t intr_status;
unsigned long flags = 0;
uint8_t reqs_count = 0;
ha = (struct scsi_qla_host *) dev_id;
if (!ha) {
DEBUG2(printk(KERN_INFO
"qla4xxx: Interrupt with NULL host ptr\n"));
return IRQ_NONE;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->isr_count++;
/*
* Repeatedly service interrupts up to a maximum of
* MAX_REQS_SERVICED_PER_INTR
*/
while (1) {
/*
* Read interrupt status
*/
if (ha->isp_ops->rd_shdw_rsp_q_in(ha) !=
ha->response_out)
intr_status = CSR_SCSI_COMPLETION_INTR;
else
intr_status = readl(&ha->reg->ctrl_status);
if ((intr_status &
(CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) {
if (reqs_count == 0)
ha->spurious_int_count++;
break;
}
if (intr_status & CSR_FATAL_ERROR) {
DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, "
"Status 0x%04x\n", ha->host_no,
readl(isp_port_error_status (ha))));
/* Issue Soft Reset to clear this error condition.
* This will prevent the RISC from repeatedly
* interrupting the driver; thus, allowing the DPC to
* get scheduled to continue error recovery.