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9
10#define KMSG_COMPONENT "dasd-eckd"
11
12#include <linux/timer.h>
13#include <linux/slab.h>
14#include <asm/idals.h>
15#include <asm/todclk.h>
16
17#define PRINTK_HEADER "dasd_erp(3990): "
18
19#include "dasd_int.h"
20#include "dasd_eckd.h"
21
22
23struct DCTL_data {
24 unsigned char subcommand;
25 unsigned char modifier;
26 unsigned short res;
27} __attribute__ ((packed));
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53
54static struct dasd_ccw_req *
55dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
56{
57 struct dasd_ccw_req *cqr = erp->refers;
58
59 dasd_free_erp_request(erp, erp->memdev);
60 cqr->status = final_status;
61 return cqr;
62
63}
64
65
66
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70
71
72
73static void
74dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
75{
76
77 struct dasd_device *device = erp->startdev;
78 unsigned long flags;
79
80 DBF_DEV_EVENT(DBF_INFO, device,
81 "blocking request queue for %is", expires/HZ);
82
83 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
84 device->stopped |= DASD_STOPPED_PENDING;
85 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
86 erp->status = DASD_CQR_FILLED;
87 dasd_block_set_timer(device->block, expires);
88}
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100
101
102static struct dasd_ccw_req *
103dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
104{
105
106 struct dasd_device *device = erp->startdev;
107
108
109
110
111 if (erp->function != dasd_3990_erp_int_req) {
112
113 erp->retries = 256;
114 erp->function = dasd_3990_erp_int_req;
115
116 } else {
117
118
119 dev_err(&device->cdev->dev,
120 "is offline or not installed - "
121 "INTERVENTION REQUIRED!!\n");
122
123 dasd_3990_erp_block_queue(erp, 60*HZ);
124 }
125
126 return erp;
127
128}
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143
144static void
145dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
146{
147 struct dasd_device *device = erp->startdev;
148 __u8 opm;
149 unsigned long flags;
150
151
152 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
153 opm = ccw_device_get_path_mask(device->cdev);
154 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
155
156 if (erp->lpm == 0)
157 erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum);
158 else
159 erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum);
160
161 if ((erp->lpm & opm) != 0x00) {
162
163 DBF_DEV_EVENT(DBF_WARNING, device,
164 "try alternate lpm=%x (lpum=%x / opm=%x)",
165 erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm);
166
167
168 erp->status = DASD_CQR_FILLED;
169 erp->retries = 10;
170 } else {
171 dev_err(&device->cdev->dev,
172 "The DASD cannot be reached on any path (lpum=%x"
173 "/opm=%x)\n", erp->irb.esw.esw0.sublog.lpum, opm);
174
175
176 erp->status = DASD_CQR_FAILED;
177 }
178}
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194
195static struct dasd_ccw_req *
196dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
197{
198
199 struct dasd_device *device = erp->startdev;
200 struct DCTL_data *DCTL_data;
201 struct ccw1 *ccw;
202 struct dasd_ccw_req *dctl_cqr;
203
204 dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1,
205 sizeof(struct DCTL_data),
206 device);
207 if (IS_ERR(dctl_cqr)) {
208 dev_err(&device->cdev->dev,
209 "Unable to allocate DCTL-CQR\n");
210 erp->status = DASD_CQR_FAILED;
211 return erp;
212 }
213
214 DCTL_data = dctl_cqr->data;
215
216 DCTL_data->subcommand = 0x02;
217 DCTL_data->modifier = modifier;
218
219 ccw = dctl_cqr->cpaddr;
220 memset(ccw, 0, sizeof(struct ccw1));
221 ccw->cmd_code = CCW_CMD_DCTL;
222 ccw->count = 4;
223 ccw->cda = (__u32)(addr_t) DCTL_data;
224 dctl_cqr->function = dasd_3990_erp_DCTL;
225 dctl_cqr->refers = erp;
226 dctl_cqr->startdev = device;
227 dctl_cqr->memdev = device;
228 dctl_cqr->magic = erp->magic;
229 dctl_cqr->expires = 5 * 60 * HZ;
230 dctl_cqr->retries = 2;
231
232 dctl_cqr->buildclk = get_clock();
233
234 dctl_cqr->status = DASD_CQR_FILLED;
235
236 return dctl_cqr;
237
238}
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257static struct dasd_ccw_req *
258dasd_3990_erp_action_1(struct dasd_ccw_req * erp)
259{
260
261 erp->function = dasd_3990_erp_action_1;
262
263 dasd_3990_erp_alternate_path(erp);
264
265 return erp;
266
267}
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287static struct dasd_ccw_req *
288dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
289{
290
291 struct dasd_device *device = erp->startdev;
292
293
294
295
296 if (erp->function != dasd_3990_erp_action_4) {
297
298 DBF_DEV_EVENT(DBF_INFO, device, "%s",
299 "dasd_3990_erp_action_4: first time retry");
300
301 erp->retries = 256;
302 erp->function = dasd_3990_erp_action_4;
303
304 } else {
305 if (sense && (sense[25] == 0x1D)) {
306
307 DBF_DEV_EVENT(DBF_INFO, device,
308 "waiting for state change pending "
309 "interrupt, %d retries left",
310 erp->retries);
311
312 dasd_3990_erp_block_queue(erp, 30*HZ);
313
314 } else if (sense && (sense[25] == 0x1E)) {
315 DBF_DEV_EVENT(DBF_INFO, device,
316 "busy - redriving request later, "
317 "%d retries left",
318 erp->retries);
319 dasd_3990_erp_block_queue(erp, HZ);
320 } else {
321
322 DBF_DEV_EVENT(DBF_INFO, device,
323 "redriving request immediately, "
324 "%d retries left",
325 erp->retries);
326 erp->status = DASD_CQR_FILLED;
327 }
328 }
329
330 return erp;
331
332}
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354static struct dasd_ccw_req *
355dasd_3990_erp_action_5(struct dasd_ccw_req * erp)
356{
357
358
359 erp->retries = 10;
360 erp->function = dasd_3990_erp_action_5;
361
362 return erp;
363
364}
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379
380static void
381dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense)
382{
383
384 struct dasd_device *device = erp->startdev;
385 char msg_format = (sense[7] & 0xF0);
386 char msg_no = (sense[7] & 0x0F);
387 char errorstring[ERRORLENGTH];
388
389 switch (msg_format) {
390 case 0x00:
391
392 if (sense[1] & 0x10) {
393
394 switch (msg_no) {
395 case 0x00:
396 break;
397 case 0x01:
398 dev_warn(&device->cdev->dev,
399 "FORMAT 0 - Invalid Command\n");
400 break;
401 case 0x02:
402 dev_warn(&device->cdev->dev,
403 "FORMAT 0 - Invalid Command "
404 "Sequence\n");
405 break;
406 case 0x03:
407 dev_warn(&device->cdev->dev,
408 "FORMAT 0 - CCW Count less than "
409 "required\n");
410 break;
411 case 0x04:
412 dev_warn(&device->cdev->dev,
413 "FORMAT 0 - Invalid Parameter\n");
414 break;
415 case 0x05:
416 dev_warn(&device->cdev->dev,
417 "FORMAT 0 - Diagnostic of Special"
418 " Command Violates File Mask\n");
419 break;
420 case 0x07:
421 dev_warn(&device->cdev->dev,
422 "FORMAT 0 - Channel Returned with "
423 "Incorrect retry CCW\n");
424 break;
425 case 0x08:
426 dev_warn(&device->cdev->dev,
427 "FORMAT 0 - Reset Notification\n");
428 break;
429 case 0x09:
430 dev_warn(&device->cdev->dev,
431 "FORMAT 0 - Storage Path Restart\n");
432 break;
433 case 0x0A:
434 dev_warn(&device->cdev->dev,
435 "FORMAT 0 - Channel requested "
436 "... %02x\n", sense[8]);
437 break;
438 case 0x0B:
439 dev_warn(&device->cdev->dev,
440 "FORMAT 0 - Invalid Defective/"
441 "Alternate Track Pointer\n");
442 break;
443 case 0x0C:
444 dev_warn(&device->cdev->dev,
445 "FORMAT 0 - DPS Installation "
446 "Check\n");
447 break;
448 case 0x0E:
449 dev_warn(&device->cdev->dev,
450 "FORMAT 0 - Command Invalid on "
451 "Secondary Address\n");
452 break;
453 case 0x0F:
454 dev_warn(&device->cdev->dev,
455 "FORMAT 0 - Status Not As "
456 "Required: reason %02x\n",
457 sense[8]);
458 break;
459 default:
460 dev_warn(&device->cdev->dev,
461 "FORMAT 0 - Reserved\n");
462 }
463 } else {
464 switch (msg_no) {
465 case 0x00:
466 break;
467 case 0x01:
468 dev_warn(&device->cdev->dev,
469 "FORMAT 0 - Device Error "
470 "Source\n");
471 break;
472 case 0x02:
473 dev_warn(&device->cdev->dev,
474 "FORMAT 0 - Reserved\n");
475 break;
476 case 0x03:
477 dev_warn(&device->cdev->dev,
478 "FORMAT 0 - Device Fenced - "
479 "device = %02x\n", sense[4]);
480 break;
481 case 0x04:
482 dev_warn(&device->cdev->dev,
483 "FORMAT 0 - Data Pinned for "
484 "Device\n");
485 break;
486 default:
487 dev_warn(&device->cdev->dev,
488 "FORMAT 0 - Reserved\n");
489 }
490 }
491 break;
492
493 case 0x10:
494 switch (msg_no) {
495 case 0x00:
496 break;
497 case 0x01:
498 dev_warn(&device->cdev->dev,
499 "FORMAT 1 - Device Status 1 not as "
500 "expected\n");
501 break;
502 case 0x03:
503 dev_warn(&device->cdev->dev,
504 "FORMAT 1 - Index missing\n");
505 break;
506 case 0x04:
507 dev_warn(&device->cdev->dev,
508 "FORMAT 1 - Interruption cannot be "
509 "reset\n");
510 break;
511 case 0x05:
512 dev_warn(&device->cdev->dev,
513 "FORMAT 1 - Device did not respond to "
514 "selection\n");
515 break;
516 case 0x06:
517 dev_warn(&device->cdev->dev,
518 "FORMAT 1 - Device check-2 error or Set "
519 "Sector is not complete\n");
520 break;
521 case 0x07:
522 dev_warn(&device->cdev->dev,
523 "FORMAT 1 - Head address does not "
524 "compare\n");
525 break;
526 case 0x08:
527 dev_warn(&device->cdev->dev,
528 "FORMAT 1 - Device status 1 not valid\n");
529 break;
530 case 0x09:
531 dev_warn(&device->cdev->dev,
532 "FORMAT 1 - Device not ready\n");
533 break;
534 case 0x0A:
535 dev_warn(&device->cdev->dev,
536 "FORMAT 1 - Track physical address did "
537 "not compare\n");
538 break;
539 case 0x0B:
540 dev_warn(&device->cdev->dev,
541 "FORMAT 1 - Missing device address bit\n");
542 break;
543 case 0x0C:
544 dev_warn(&device->cdev->dev,
545 "FORMAT 1 - Drive motor switch is off\n");
546 break;
547 case 0x0D:
548 dev_warn(&device->cdev->dev,
549 "FORMAT 1 - Seek incomplete\n");
550 break;
551 case 0x0E:
552 dev_warn(&device->cdev->dev,
553 "FORMAT 1 - Cylinder address did not "
554 "compare\n");
555 break;
556 case 0x0F:
557 dev_warn(&device->cdev->dev,
558 "FORMAT 1 - Offset active cannot be "
559 "reset\n");
560 break;
561 default:
562 dev_warn(&device->cdev->dev,
563 "FORMAT 1 - Reserved\n");
564 }
565 break;
566
567 case 0x20:
568 switch (msg_no) {
569 case 0x08:
570 dev_warn(&device->cdev->dev,
571 "FORMAT 2 - 3990 check-2 error\n");
572 break;
573 case 0x0E:
574 dev_warn(&device->cdev->dev,
575 "FORMAT 2 - Support facility errors\n");
576 break;
577 case 0x0F:
578 dev_warn(&device->cdev->dev,
579 "FORMAT 2 - Microcode detected error "
580 "%02x\n",
581 sense[8]);
582 break;
583 default:
584 dev_warn(&device->cdev->dev,
585 "FORMAT 2 - Reserved\n");
586 }
587 break;
588
589 case 0x30:
590 switch (msg_no) {
591 case 0x0F:
592 dev_warn(&device->cdev->dev,
593 "FORMAT 3 - Allegiance terminated\n");
594 break;
595 default:
596 dev_warn(&device->cdev->dev,
597 "FORMAT 3 - Reserved\n");
598 }
599 break;
600
601 case 0x40:
602 switch (msg_no) {
603 case 0x00:
604 dev_warn(&device->cdev->dev,
605 "FORMAT 4 - Home address area error\n");
606 break;
607 case 0x01:
608 dev_warn(&device->cdev->dev,
609 "FORMAT 4 - Count area error\n");
610 break;
611 case 0x02:
612 dev_warn(&device->cdev->dev,
613 "FORMAT 4 - Key area error\n");
614 break;
615 case 0x03:
616 dev_warn(&device->cdev->dev,
617 "FORMAT 4 - Data area error\n");
618 break;
619 case 0x04:
620 dev_warn(&device->cdev->dev,
621 "FORMAT 4 - No sync byte in home address "
622 "area\n");
623 break;
624 case 0x05:
625 dev_warn(&device->cdev->dev,
626 "FORMAT 4 - No sync byte in count address "
627 "area\n");
628 break;
629 case 0x06:
630 dev_warn(&device->cdev->dev,
631 "FORMAT 4 - No sync byte in key area\n");
632 break;
633 case 0x07:
634 dev_warn(&device->cdev->dev,
635 "FORMAT 4 - No sync byte in data area\n");
636 break;
637 case 0x08:
638 dev_warn(&device->cdev->dev,
639 "FORMAT 4 - Home address area error; "
640 "offset active\n");
641 break;
642 case 0x09:
643 dev_warn(&device->cdev->dev,
644 "FORMAT 4 - Count area error; offset "
645 "active\n");
646 break;
647 case 0x0A:
648 dev_warn(&device->cdev->dev,
649 "FORMAT 4 - Key area error; offset "
650 "active\n");
651 break;
652 case 0x0B:
653 dev_warn(&device->cdev->dev,
654 "FORMAT 4 - Data area error; "
655 "offset active\n");
656 break;
657 case 0x0C:
658 dev_warn(&device->cdev->dev,
659 "FORMAT 4 - No sync byte in home "
660 "address area; offset active\n");
661 break;
662 case 0x0D:
663 dev_warn(&device->cdev->dev,
664 "FORMAT 4 - No syn byte in count "
665 "address area; offset active\n");
666 break;
667 case 0x0E:
668 dev_warn(&device->cdev->dev,
669 "FORMAT 4 - No sync byte in key area; "
670 "offset active\n");
671 break;
672 case 0x0F:
673 dev_warn(&device->cdev->dev,
674 "FORMAT 4 - No syn byte in data area; "
675 "offset active\n");
676 break;
677 default:
678 dev_warn(&device->cdev->dev,
679 "FORMAT 4 - Reserved\n");
680 }
681 break;
682
683 case 0x50:
684 switch (msg_no) {
685 case 0x00:
686 dev_warn(&device->cdev->dev,
687 "FORMAT 5 - Data Check in the "
688 "home address area\n");
689 break;
690 case 0x01:
691 dev_warn(&device->cdev->dev,
692 "FORMAT 5 - Data Check in the count "
693 "area\n");
694 break;
695 case 0x02:
696 dev_warn(&device->cdev->dev,
697 "FORMAT 5 - Data Check in the key area\n");
698 break;
699 case 0x03:
700 dev_warn(&device->cdev->dev,
701 "FORMAT 5 - Data Check in the data "
702 "area\n");
703 break;
704 case 0x08:
705 dev_warn(&device->cdev->dev,
706 "FORMAT 5 - Data Check in the "
707 "home address area; offset active\n");
708 break;
709 case 0x09:
710 dev_warn(&device->cdev->dev,
711 "FORMAT 5 - Data Check in the count area; "
712 "offset active\n");
713 break;
714 case 0x0A:
715 dev_warn(&device->cdev->dev,
716 "FORMAT 5 - Data Check in the key area; "
717 "offset active\n");
718 break;
719 case 0x0B:
720 dev_warn(&device->cdev->dev,
721 "FORMAT 5 - Data Check in the data area; "
722 "offset active\n");
723 break;
724 default:
725 dev_warn(&device->cdev->dev,
726 "FORMAT 5 - Reserved\n");
727 }
728 break;
729
730 case 0x60:
731 switch (msg_no) {
732 case 0x00:
733 dev_warn(&device->cdev->dev,
734 "FORMAT 6 - Overrun on channel A\n");
735 break;
736 case 0x01:
737 dev_warn(&device->cdev->dev,
738 "FORMAT 6 - Overrun on channel B\n");
739 break;
740 case 0x02:
741 dev_warn(&device->cdev->dev,
742 "FORMAT 6 - Overrun on channel C\n");
743 break;
744 case 0x03:
745 dev_warn(&device->cdev->dev,
746 "FORMAT 6 - Overrun on channel D\n");
747 break;
748 case 0x04:
749 dev_warn(&device->cdev->dev,
750 "FORMAT 6 - Overrun on channel E\n");
751 break;
752 case 0x05:
753 dev_warn(&device->cdev->dev,
754 "FORMAT 6 - Overrun on channel F\n");
755 break;
756 case 0x06:
757 dev_warn(&device->cdev->dev,
758 "FORMAT 6 - Overrun on channel G\n");
759 break;
760 case 0x07:
761 dev_warn(&device->cdev->dev,
762 "FORMAT 6 - Overrun on channel H\n");
763 break;
764 default:
765 dev_warn(&device->cdev->dev,
766 "FORMAT 6 - Reserved\n");
767 }
768 break;
769
770 case 0x70:
771 switch (msg_no) {
772 case 0x00:
773 dev_warn(&device->cdev->dev,
774 "FORMAT 7 - RCC initiated by a connection "
775 "check alert\n");
776 break;
777 case 0x01:
778 dev_warn(&device->cdev->dev,
779 "FORMAT 7 - RCC 1 sequence not "
780 "successful\n");
781 break;
782 case 0x02:
783 dev_warn(&device->cdev->dev,
784 "FORMAT 7 - RCC 1 and RCC 2 sequences not "
785 "successful\n");
786 break;
787 case 0x03:
788 dev_warn(&device->cdev->dev,
789 "FORMAT 7 - Invalid tag-in during "
790 "selection sequence\n");
791 break;
792 case 0x04:
793 dev_warn(&device->cdev->dev,
794 "FORMAT 7 - extra RCC required\n");
795 break;
796 case 0x05:
797 dev_warn(&device->cdev->dev,
798 "FORMAT 7 - Invalid DCC selection "
799 "response or timeout\n");
800 break;
801 case 0x06:
802 dev_warn(&device->cdev->dev,
803 "FORMAT 7 - Missing end operation; device "
804 "transfer complete\n");
805 break;
806 case 0x07:
807 dev_warn(&device->cdev->dev,
808 "FORMAT 7 - Missing end operation; device "
809 "transfer incomplete\n");
810 break;
811 case 0x08:
812 dev_warn(&device->cdev->dev,
813 "FORMAT 7 - Invalid tag-in for an "
814 "immediate command sequence\n");
815 break;
816 case 0x09:
817 dev_warn(&device->cdev->dev,
818 "FORMAT 7 - Invalid tag-in for an "
819 "extended command sequence\n");
820 break;
821 case 0x0A:
822 dev_warn(&device->cdev->dev,
823 "FORMAT 7 - 3990 microcode time out when "
824 "stopping selection\n");
825 break;
826 case 0x0B:
827 dev_warn(&device->cdev->dev,
828 "FORMAT 7 - No response to selection "
829 "after a poll interruption\n");
830 break;
831 case 0x0C:
832 dev_warn(&device->cdev->dev,
833 "FORMAT 7 - Permanent path error (DASD "
834 "controller not available)\n");
835 break;
836 case 0x0D:
837 dev_warn(&device->cdev->dev,
838 "FORMAT 7 - DASD controller not available"
839 " on disconnected command chain\n");
840 break;
841 default:
842 dev_warn(&device->cdev->dev,
843 "FORMAT 7 - Reserved\n");
844 }
845 break;
846
847 case 0x80:
848 switch (msg_no) {
849 case 0x00:
850 case 0x01:
851 dev_warn(&device->cdev->dev,
852 "FORMAT 8 - Error correction code "
853 "hardware fault\n");
854 break;
855 case 0x03:
856 dev_warn(&device->cdev->dev,
857 "FORMAT 8 - Unexpected end operation "
858 "response code\n");
859 break;
860 case 0x04:
861 dev_warn(&device->cdev->dev,
862 "FORMAT 8 - End operation with transfer "
863 "count not zero\n");
864 break;
865 case 0x05:
866 dev_warn(&device->cdev->dev,
867 "FORMAT 8 - End operation with transfer "
868 "count zero\n");
869 break;
870 case 0x06:
871 dev_warn(&device->cdev->dev,
872 "FORMAT 8 - DPS checks after a system "
873 "reset or selective reset\n");
874 break;
875 case 0x07:
876 dev_warn(&device->cdev->dev,
877 "FORMAT 8 - DPS cannot be filled\n");
878 break;
879 case 0x08:
880 dev_warn(&device->cdev->dev,
881 "FORMAT 8 - Short busy time-out during "
882 "device selection\n");
883 break;
884 case 0x09:
885 dev_warn(&device->cdev->dev,
886 "FORMAT 8 - DASD controller failed to "
887 "set or reset the long busy latch\n");
888 break;
889 case 0x0A:
890 dev_warn(&device->cdev->dev,
891 "FORMAT 8 - No interruption from device "
892 "during a command chain\n");
893 break;
894 default:
895 dev_warn(&device->cdev->dev,
896 "FORMAT 8 - Reserved\n");
897 }
898 break;
899
900 case 0x90:
901 switch (msg_no) {
902 case 0x00:
903 break;
904 case 0x06:
905 dev_warn(&device->cdev->dev,
906 "FORMAT 9 - Device check-2 error\n");
907 break;
908 case 0x07:
909 dev_warn(&device->cdev->dev,
910 "FORMAT 9 - Head address did not "
911 "compare\n");
912 break;
913 case 0x0A:
914 dev_warn(&device->cdev->dev,
915 "FORMAT 9 - Track physical address did "
916 "not compare while oriented\n");
917 break;
918 case 0x0E:
919 dev_warn(&device->cdev->dev,
920 "FORMAT 9 - Cylinder address did not "
921 "compare\n");
922 break;
923 default:
924 dev_warn(&device->cdev->dev,
925 "FORMAT 9 - Reserved\n");
926 }
927 break;
928
929 case 0xF0:
930 switch (msg_no) {
931 case 0x00:
932 dev_warn(&device->cdev->dev,
933 "FORMAT F - Operation Terminated\n");
934 break;
935 case 0x01:
936 dev_warn(&device->cdev->dev,
937 "FORMAT F - Subsystem Processing Error\n");
938 break;
939 case 0x02:
940 dev_warn(&device->cdev->dev,
941 "FORMAT F - Cache or nonvolatile storage "
942 "equipment failure\n");
943 break;
944 case 0x04:
945 dev_warn(&device->cdev->dev,
946 "FORMAT F - Caching terminated\n");
947 break;
948 case 0x06:
949 dev_warn(&device->cdev->dev,
950 "FORMAT F - Cache fast write access not "
951 "authorized\n");
952 break;
953 case 0x07:
954 dev_warn(&device->cdev->dev,
955 "FORMAT F - Track format incorrect\n");
956 break;
957 case 0x09:
958 dev_warn(&device->cdev->dev,
959 "FORMAT F - Caching reinitiated\n");
960 break;
961 case 0x0A:
962 dev_warn(&device->cdev->dev,
963 "FORMAT F - Nonvolatile storage "
964 "terminated\n");
965 break;
966 case 0x0B:
967 dev_warn(&device->cdev->dev,
968 "FORMAT F - Volume is suspended duplex\n");
969
970 dasd_eer_write(device, erp->refers,
971 DASD_EER_PPRCSUSPEND);
972 break;
973 case 0x0C:
974 dev_warn(&device->cdev->dev,
975 "FORMAT F - Subsystem status cannot be "
976 "determined\n");
977 break;
978 case 0x0D:
979 dev_warn(&device->cdev->dev,
980 "FORMAT F - Caching status reset to "
981 "default\n");
982 break;
983 case 0x0E:
984 dev_warn(&device->cdev->dev,
985 "FORMAT F - DASD Fast Write inhibited\n");
986 break;
987 default:
988 dev_warn(&device->cdev->dev,
989 "FORMAT D - Reserved\n");
990 }
991 break;
992
993 default:
994
995 snprintf(errorstring, ERRORLENGTH, "03 %x02", msg_format);
996 dev_err(&device->cdev->dev,
997 "An error occurred in the DASD device driver, "
998 "reason=%s\n", errorstring);
999 break;
1000 }
1001
1002}
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017static struct dasd_ccw_req *
1018dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
1019{
1020
1021 struct dasd_device *device = erp->startdev;
1022
1023 erp->function = dasd_3990_erp_com_rej;
1024
1025
1026 if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1027
1028 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1029 "Command Reject - environmental data present");
1030
1031 dasd_3990_handle_env_data(erp, sense);
1032
1033 erp->retries = 5;
1034
1035 } else {
1036
1037
1038 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1039 "device driver, reason=%s\n", "09");
1040
1041 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1042 }
1043
1044 return erp;
1045
1046}
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059static struct dasd_ccw_req *
1060dasd_3990_erp_bus_out(struct dasd_ccw_req * erp)
1061{
1062
1063 struct dasd_device *device = erp->startdev;
1064
1065
1066
1067
1068 if (erp->function != dasd_3990_erp_bus_out) {
1069 erp->retries = 256;
1070 erp->function = dasd_3990_erp_bus_out;
1071
1072 } else {
1073
1074
1075 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1076 "bus out parity error or BOPC requested by "
1077 "channel");
1078
1079 dasd_3990_erp_block_queue(erp, 60*HZ);
1080
1081 }
1082
1083 return erp;
1084
1085}
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098static struct dasd_ccw_req *
1099dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense)
1100{
1101
1102 struct dasd_device *device = erp->startdev;
1103
1104 erp->function = dasd_3990_erp_equip_check;
1105
1106 if (sense[1] & SNS1_WRITE_INHIBITED) {
1107 dev_info(&device->cdev->dev,
1108 "Write inhibited path encountered\n");
1109
1110
1111
1112 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1113 "device driver, reason=%s\n", "04");
1114
1115 erp = dasd_3990_erp_action_1(erp);
1116
1117 } else if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1118
1119 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1120 "Equipment Check - " "environmental data present");
1121
1122 dasd_3990_handle_env_data(erp, sense);
1123
1124 erp = dasd_3990_erp_action_4(erp, sense);
1125
1126 } else if (sense[1] & SNS1_PERM_ERR) {
1127
1128 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1129 "Equipment Check - retry exhausted or "
1130 "undesirable");
1131
1132 erp = dasd_3990_erp_action_1(erp);
1133
1134 } else {
1135
1136
1137 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1138 "Equipment check or processing error");
1139
1140 erp = dasd_3990_erp_action_5(erp);
1141 }
1142 return erp;
1143
1144}
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157static struct dasd_ccw_req *
1158dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense)
1159{
1160
1161 struct dasd_device *device = erp->startdev;
1162
1163 erp->function = dasd_3990_erp_data_check;
1164
1165 if (sense[2] & SNS2_CORRECTABLE) {
1166
1167
1168 dev_emerg(&device->cdev->dev,
1169 "Data recovered during retry with PCI "
1170 "fetch mode active\n");
1171
1172
1173 panic("No way to inform application about the possibly "
1174 "incorrect data");
1175
1176 } else if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1177
1178 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1179 "Uncorrectable data check recovered secondary "
1180 "addr of duplex pair");
1181
1182 erp = dasd_3990_erp_action_4(erp, sense);
1183
1184 } else if (sense[1] & SNS1_PERM_ERR) {
1185
1186 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1187 "Uncorrectable data check with internal "
1188 "retry exhausted");
1189
1190 erp = dasd_3990_erp_action_1(erp);
1191
1192 } else {
1193
1194 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1195 "Uncorrectable data check with retry count "
1196 "exhausted...");
1197
1198 erp = dasd_3990_erp_action_5(erp);
1199 }
1200
1201 return erp;
1202
1203}
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216static struct dasd_ccw_req *
1217dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense)
1218{
1219
1220 struct dasd_device *device = erp->startdev;
1221
1222 erp->function = dasd_3990_erp_overrun;
1223
1224 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1225 "Overrun - service overrun or overrun"
1226 " error requested by channel");
1227
1228 erp = dasd_3990_erp_action_5(erp);
1229
1230 return erp;
1231
1232}
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245static struct dasd_ccw_req *
1246dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense)
1247{
1248
1249 struct dasd_device *device = erp->startdev;
1250
1251 erp->function = dasd_3990_erp_inv_format;
1252
1253 if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1254
1255 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1256 "Track format error when destaging or "
1257 "staging data");
1258
1259 dasd_3990_handle_env_data(erp, sense);
1260
1261 erp = dasd_3990_erp_action_4(erp, sense);
1262
1263 } else {
1264
1265 dev_err(&device->cdev->dev,
1266 "An error occurred in the DASD device driver, "
1267 "reason=%s\n", "06");
1268
1269 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1270 }
1271
1272 return erp;
1273
1274}
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287static struct dasd_ccw_req *
1288dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense)
1289{
1290
1291 struct dasd_device *device = default_erp->startdev;
1292
1293 dev_err(&device->cdev->dev,
1294 "The cylinder data for accessing the DASD is inconsistent\n");
1295
1296
1297 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1298
1299}
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312static struct dasd_ccw_req *
1313dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense)
1314{
1315
1316 struct dasd_device *device = erp->startdev;
1317
1318 erp->function = dasd_3990_erp_env_data;
1319
1320 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Environmental data present");
1321
1322 dasd_3990_handle_env_data(erp, sense);
1323
1324
1325 if (sense[7] != 0x0F) {
1326 erp = dasd_3990_erp_action_4(erp, sense);
1327 } else {
1328 erp->status = DASD_CQR_FILLED;
1329 }
1330
1331 return erp;
1332
1333}
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347static struct dasd_ccw_req *
1348dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense)
1349{
1350
1351 struct dasd_device *device = default_erp->startdev;
1352
1353 dev_err(&device->cdev->dev,
1354 "The specified record was not found\n");
1355
1356 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1357
1358}
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373static struct dasd_ccw_req *
1374dasd_3990_erp_file_prot(struct dasd_ccw_req * erp)
1375{
1376
1377 struct dasd_device *device = erp->startdev;
1378
1379 dev_err(&device->cdev->dev, "Accessing the DASD failed because of "
1380 "a hardware error\n");
1381
1382 return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1383
1384}
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401static struct dasd_ccw_req *dasd_3990_erp_inspect_alias(
1402 struct dasd_ccw_req *erp)
1403{
1404 struct dasd_ccw_req *cqr = erp->refers;
1405
1406 if (cqr->block &&
1407 (cqr->block->base != cqr->startdev)) {
1408 if (cqr->startdev->features & DASD_FEATURE_ERPLOG) {
1409 DBF_DEV_EVENT(DBF_ERR, cqr->startdev,
1410 "ERP on alias device for request %p,"
1411 " recover on base device %s", cqr,
1412 dev_name(&cqr->block->base->cdev->dev));
1413 }
1414 dasd_eckd_reset_ccw_to_base_io(cqr);
1415 erp->startdev = cqr->block->base;
1416 erp->function = dasd_3990_erp_inspect_alias;
1417 return erp;
1418 } else
1419 return NULL;
1420}
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437static struct dasd_ccw_req *
1438dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense)
1439{
1440
1441 struct dasd_ccw_req *erp_filled = NULL;
1442
1443
1444
1445 if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) {
1446 erp_filled = dasd_3990_erp_com_rej(erp, sense);
1447 }
1448
1449 if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) {
1450 erp_filled = dasd_3990_erp_int_req(erp);
1451 }
1452
1453 if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) {
1454 erp_filled = dasd_3990_erp_bus_out(erp);
1455 }
1456
1457 if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) {
1458 erp_filled = dasd_3990_erp_equip_check(erp, sense);
1459 }
1460
1461 if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) {
1462 erp_filled = dasd_3990_erp_data_check(erp, sense);
1463 }
1464
1465 if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) {
1466 erp_filled = dasd_3990_erp_overrun(erp, sense);
1467 }
1468
1469 if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) {
1470 erp_filled = dasd_3990_erp_inv_format(erp, sense);
1471 }
1472
1473 if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) {
1474 erp_filled = dasd_3990_erp_EOC(erp, sense);
1475 }
1476
1477 if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) {
1478 erp_filled = dasd_3990_erp_env_data(erp, sense);
1479 }
1480
1481 if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) {
1482 erp_filled = dasd_3990_erp_no_rec(erp, sense);
1483 }
1484
1485 if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) {
1486 erp_filled = dasd_3990_erp_file_prot(erp);
1487 }
1488
1489 if (erp_filled == NULL) {
1490
1491 erp_filled = erp;
1492 }
1493
1494 return erp_filled;
1495
1496}
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517static struct dasd_ccw_req *
1518dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense)
1519{
1520
1521 struct dasd_device *device = erp->startdev;
1522
1523 erp->retries = 256;
1524 erp->function = dasd_3990_erp_action_10_32;
1525
1526 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Perform logging requested");
1527
1528 return erp;
1529
1530}
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551static struct dasd_ccw_req *
1552dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
1553{
1554
1555 struct dasd_device *device = default_erp->startdev;
1556 __u32 cpa = 0;
1557 struct dasd_ccw_req *cqr;
1558 struct dasd_ccw_req *erp;
1559 struct DE_eckd_data *DE_data;
1560 struct PFX_eckd_data *PFX_data;
1561 char *LO_data;
1562 struct ccw1 *ccw, *oldccw;
1563
1564 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1565 "Write not finished because of unexpected condition");
1566
1567 default_erp->function = dasd_3990_erp_action_1B_32;
1568
1569
1570 cqr = default_erp;
1571
1572 while (cqr->refers != NULL) {
1573 cqr = cqr->refers;
1574 }
1575
1576 if (scsw_is_tm(&cqr->irb.scsw)) {
1577 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1578 "32 bit sense, action 1B is not defined"
1579 " in transport mode - just retry");
1580 return default_erp;
1581 }
1582
1583
1584 if (sense[1] & 0x01) {
1585 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1586 "Imprecise ending is set - just retry");
1587
1588 return default_erp;
1589 }
1590
1591
1592
1593 cpa = default_erp->refers->irb.scsw.cmd.cpa;
1594
1595 if (cpa == 0) {
1596 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1597 "Unable to determine address of the CCW "
1598 "to be restarted");
1599
1600 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1601 }
1602
1603
1604 erp = dasd_alloc_erp_request((char *) &cqr->magic,
1605 2 + 1,
1606 sizeof(struct DE_eckd_data) +
1607 sizeof(struct LO_eckd_data), device);
1608
1609 if (IS_ERR(erp)) {
1610
1611 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1612 "device driver, reason=%s\n", "01");
1613 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1614 }
1615
1616
1617 DE_data = erp->data;
1618 oldccw = cqr->cpaddr;
1619 if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) {
1620 PFX_data = cqr->data;
1621 memcpy(DE_data, &PFX_data->define_extent,
1622 sizeof(struct DE_eckd_data));
1623 } else
1624 memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data));
1625
1626
1627 LO_data = erp->data + sizeof(struct DE_eckd_data);
1628
1629 if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
1630
1631 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1632 }
1633
1634 if ((sense[7] & 0x3F) == 0x01) {
1635
1636 LO_data[0] = 0x81;
1637
1638 } else if ((sense[7] & 0x3F) == 0x03) {
1639
1640 LO_data[0] = 0xC3;
1641
1642 } else {
1643 LO_data[0] = sense[7];
1644 }
1645
1646 LO_data[1] = sense[8];
1647 LO_data[2] = sense[9];
1648 LO_data[3] = sense[3];
1649 LO_data[4] = sense[29];
1650 LO_data[5] = sense[30];
1651 LO_data[7] = sense[31];
1652
1653 memcpy(&(LO_data[8]), &(sense[11]), 8);
1654
1655
1656 ccw = erp->cpaddr;
1657 memset(ccw, 0, sizeof(struct ccw1));
1658 ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT;
1659 ccw->flags = CCW_FLAG_CC;
1660 ccw->count = 16;
1661 ccw->cda = (__u32)(addr_t) DE_data;
1662
1663
1664 ccw++;
1665 memset(ccw, 0, sizeof(struct ccw1));
1666 ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD;
1667 ccw->flags = CCW_FLAG_CC;
1668 ccw->count = 16;
1669 ccw->cda = (__u32)(addr_t) LO_data;
1670
1671
1672 ccw++;
1673 ccw->cmd_code = CCW_CMD_TIC;
1674 ccw->cda = cpa;
1675
1676
1677 erp->function = dasd_3990_erp_action_1B_32;
1678 erp->refers = default_erp->refers;
1679 erp->startdev = device;
1680 erp->memdev = device;
1681 erp->magic = default_erp->magic;
1682 erp->expires = 0;
1683 erp->retries = 256;
1684 erp->buildclk = get_clock();
1685 erp->status = DASD_CQR_FILLED;
1686
1687
1688 dasd_free_erp_request(default_erp, device);
1689
1690 return erp;
1691
1692}
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709static struct dasd_ccw_req *
1710dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
1711{
1712
1713 struct dasd_device *device = previous_erp->startdev;
1714 __u32 cpa = 0;
1715 struct dasd_ccw_req *cqr;
1716 struct dasd_ccw_req *erp;
1717 char *LO_data;
1718 struct ccw1 *ccw;
1719
1720 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1721 "Write not finished because of unexpected condition"
1722 " - follow on");
1723
1724
1725 cqr = previous_erp;
1726
1727 while (cqr->refers != NULL) {
1728 cqr = cqr->refers;
1729 }
1730
1731 if (scsw_is_tm(&cqr->irb.scsw)) {
1732 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1733 "32 bit sense, action 1B, update,"
1734 " in transport mode - just retry");
1735 return previous_erp;
1736 }
1737
1738
1739 if (sense[1] & 0x01) {
1740 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1741 "Imprecise ending is set - just retry");
1742
1743 previous_erp->status = DASD_CQR_FILLED;
1744
1745 return previous_erp;
1746 }
1747
1748
1749
1750 cpa = previous_erp->irb.scsw.cmd.cpa;
1751
1752 if (cpa == 0) {
1753
1754
1755 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1756 "device driver, reason=%s\n", "02");
1757
1758 previous_erp->status = DASD_CQR_FAILED;
1759
1760 return previous_erp;
1761 }
1762
1763 erp = previous_erp;
1764
1765
1766 LO_data = erp->data + sizeof(struct DE_eckd_data);
1767
1768 if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
1769
1770 previous_erp->status = DASD_CQR_FAILED;
1771
1772 return previous_erp;
1773 }
1774
1775 if ((sense[7] & 0x3F) == 0x01) {
1776
1777 LO_data[0] = 0x81;
1778
1779 } else if ((sense[7] & 0x3F) == 0x03) {
1780
1781 LO_data[0] = 0xC3;
1782
1783 } else {
1784 LO_data[0] = sense[7];
1785 }
1786
1787 LO_data[1] = sense[8];
1788 LO_data[2] = sense[9];
1789 LO_data[3] = sense[3];
1790 LO_data[4] = sense[29];
1791 LO_data[5] = sense[30];
1792 LO_data[7] = sense[31];
1793
1794 memcpy(&(LO_data[8]), &(sense[11]), 8);
1795
1796
1797 ccw = erp->cpaddr;
1798 ccw++;
1799 ccw++;
1800 ccw->cda = cpa;
1801
1802 erp->status = DASD_CQR_FILLED;
1803
1804 return erp;
1805
1806}
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825static void
1826dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense)
1827{
1828
1829 switch (sense[25] & 0x03) {
1830 case 0x00:
1831 erp->retries = 1;
1832 break;
1833
1834 case 0x01:
1835 erp->retries = 2;
1836 break;
1837
1838 case 0x02:
1839 erp->retries = 10;
1840 break;
1841
1842 case 0x03:
1843 erp->retries = 256;
1844 break;
1845
1846 default:
1847 BUG();
1848 }
1849
1850 erp->function = dasd_3990_erp_compound_retry;
1851
1852}
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869static void
1870dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense)
1871{
1872
1873 if (sense[25] & DASD_SENSE_BIT_3) {
1874 dasd_3990_erp_alternate_path(erp);
1875
1876 if (erp->status == DASD_CQR_FAILED) {
1877
1878
1879
1880 erp->lpm = 0;
1881 erp->status = DASD_CQR_NEED_ERP;
1882 }
1883 }
1884
1885 erp->function = dasd_3990_erp_compound_path;
1886
1887}
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903static struct dasd_ccw_req *
1904dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense)
1905{
1906
1907 if (sense[25] & DASD_SENSE_BIT_2) {
1908
1909 switch (sense[28]) {
1910 case 0x17:
1911
1912
1913 erp = dasd_3990_erp_DCTL(erp, 0x20);
1914 break;
1915
1916 case 0x25:
1917
1918 erp->retries = 1;
1919
1920 dasd_3990_erp_block_queue (erp, 5*HZ);
1921 break;
1922
1923 default:
1924
1925 break;
1926 }
1927 }
1928
1929 erp->function = dasd_3990_erp_compound_code;
1930
1931 return erp;
1932
1933}
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951static void
1952dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense)
1953{
1954
1955 if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) {
1956
1957
1958
1959
1960 struct dasd_device *device = erp->startdev;
1961 dev_err(&device->cdev->dev,
1962 "An error occurred in the DASD device driver, "
1963 "reason=%s\n", "05");
1964
1965 }
1966
1967 erp->function = dasd_3990_erp_compound_config;
1968
1969}
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986static struct dasd_ccw_req *
1987dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense)
1988{
1989
1990 if ((erp->function == dasd_3990_erp_compound_retry) &&
1991 (erp->status == DASD_CQR_NEED_ERP)) {
1992
1993 dasd_3990_erp_compound_path(erp, sense);
1994 }
1995
1996 if ((erp->function == dasd_3990_erp_compound_path) &&
1997 (erp->status == DASD_CQR_NEED_ERP)) {
1998
1999 erp = dasd_3990_erp_compound_code(erp, sense);
2000 }
2001
2002 if ((erp->function == dasd_3990_erp_compound_code) &&
2003 (erp->status == DASD_CQR_NEED_ERP)) {
2004
2005 dasd_3990_erp_compound_config(erp, sense);
2006 }
2007
2008
2009 if (erp->status == DASD_CQR_NEED_ERP)
2010 erp->status = DASD_CQR_FAILED;
2011
2012 return erp;
2013
2014}
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028void
2029dasd_3990_erp_handle_sim(struct dasd_device *device, char *sense)
2030{
2031
2032 if ((sense[24] & DASD_SIM_MSG_TO_OP) || (sense[1] & 0x10)) {
2033
2034 dev_err(&device->cdev->dev, "SIM - SRC: "
2035 "%02x%02x%02x%02x\n", sense[22],
2036 sense[23], sense[11], sense[12]);
2037 } else if (sense[24] & DASD_SIM_LOG) {
2038
2039 dev_warn(&device->cdev->dev, "log SIM - SRC: "
2040 "%02x%02x%02x%02x\n", sense[22],
2041 sense[23], sense[11], sense[12]);
2042 }
2043}
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060static struct dasd_ccw_req *
2061dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
2062{
2063
2064 struct dasd_device *device = erp->startdev;
2065
2066 erp->function = dasd_3990_erp_inspect_32;
2067
2068
2069 if ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)
2070 dasd_3990_erp_handle_sim(device, sense);
2071
2072 if (sense[25] & DASD_SENSE_BIT_0) {
2073
2074
2075 dasd_3990_erp_compound_retry(erp, sense);
2076
2077 } else {
2078
2079
2080 switch (sense[25]) {
2081
2082 case 0x00:
2083 DBF_DEV_EVENT(DBF_DEBUG, device, "%s",
2084 "ERP called for successful request"
2085 " - just retry");
2086 break;
2087
2088 case 0x01:
2089 dev_err(&device->cdev->dev,
2090 "ERP failed for the DASD\n");
2091
2092 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2093 break;
2094
2095 case 0x02:
2096 case 0x03:
2097 erp = dasd_3990_erp_int_req(erp);
2098 break;
2099
2100 case 0x0F:
2101
2102 dev_err(&device->cdev->dev, "An error occurred in the "
2103 "DASD device driver, reason=%s\n", "08");
2104
2105 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2106 break;
2107
2108 case 0x10:
2109 erp = dasd_3990_erp_action_10_32(erp, sense);
2110 break;
2111
2112 case 0x15:
2113
2114
2115 dev_err(&device->cdev->dev,
2116 "An error occurred in the DASD device driver, "
2117 "reason=%s\n", "07");
2118
2119 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2120 break;
2121
2122 case 0x1B:
2123
2124 erp = dasd_3990_erp_action_1B_32(erp, sense);
2125 break;
2126
2127 case 0x1C:
2128 dev_emerg(&device->cdev->dev,
2129 "Data recovered during retry with PCI "
2130 "fetch mode active\n");
2131
2132
2133 panic
2134 ("Invalid data - No way to inform application "
2135 "about the possibly incorrect data");
2136 break;
2137
2138 case 0x1D:
2139 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2140 "A State change pending condition exists "
2141 "for the subsystem or device");
2142
2143 erp = dasd_3990_erp_action_4(erp, sense);
2144 break;
2145
2146 case 0x1E:
2147 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2148 "Busy condition exists "
2149 "for the subsystem or device");
2150 erp = dasd_3990_erp_action_4(erp, sense);
2151 break;
2152
2153 default:
2154 break;
2155 }
2156 }
2157
2158 return erp;
2159
2160}
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182static struct dasd_ccw_req *
2183dasd_3990_erp_control_check(struct dasd_ccw_req *erp)
2184{
2185 struct dasd_device *device = erp->startdev;
2186
2187 if (scsw_cstat(&erp->refers->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK
2188 | SCHN_STAT_CHN_CTRL_CHK)) {
2189 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2190 "channel or interface control check");
2191 erp = dasd_3990_erp_action_4(erp, NULL);
2192 }
2193 return erp;
2194}
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208static struct dasd_ccw_req *
2209dasd_3990_erp_inspect(struct dasd_ccw_req *erp)
2210{
2211
2212 struct dasd_ccw_req *erp_new = NULL;
2213 char *sense;
2214
2215
2216 erp_new = dasd_3990_erp_inspect_alias(erp);
2217 if (erp_new)
2218 return erp_new;
2219
2220
2221
2222
2223
2224 sense = dasd_get_sense(&erp->refers->irb);
2225 if (!sense)
2226 erp_new = dasd_3990_erp_control_check(erp);
2227
2228 else if (sense[27] & DASD_SENSE_BIT_0) {
2229
2230
2231 erp_new = dasd_3990_erp_inspect_24(erp, sense);
2232
2233 } else {
2234
2235
2236 erp_new = dasd_3990_erp_inspect_32(erp, sense);
2237
2238 }
2239
2240 return erp_new;
2241}
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
2262{
2263
2264 struct dasd_device *device = cqr->startdev;
2265 struct ccw1 *ccw;
2266 struct dasd_ccw_req *erp;
2267 int cplength, datasize;
2268 struct tcw *tcw;
2269 struct tsb *tsb;
2270
2271 if (cqr->cpmode == 1) {
2272 cplength = 0;
2273 datasize = sizeof(struct tcw) + sizeof(struct tsb);
2274 } else {
2275 cplength = 2;
2276 datasize = 0;
2277 }
2278
2279
2280 erp = dasd_alloc_erp_request((char *) &cqr->magic,
2281 cplength, datasize, device);
2282 if (IS_ERR(erp)) {
2283 if (cqr->retries <= 0) {
2284 DBF_DEV_EVENT(DBF_ERR, device, "%s",
2285 "Unable to allocate ERP request");
2286 cqr->status = DASD_CQR_FAILED;
2287 cqr->stopclk = get_clock ();
2288 } else {
2289 DBF_DEV_EVENT(DBF_ERR, device,
2290 "Unable to allocate ERP request "
2291 "(%i retries left)",
2292 cqr->retries);
2293 dasd_block_set_timer(device->block, (HZ << 3));
2294 }
2295 return cqr;
2296 }
2297
2298 if (cqr->cpmode == 1) {
2299
2300 erp->cpmode = 1;
2301 erp->cpaddr = erp->data;
2302 tcw = erp->data;
2303 tsb = (struct tsb *) &tcw[1];
2304 *tcw = *((struct tcw *)cqr->cpaddr);
2305 tcw->tsb = (long)tsb;
2306 } else {
2307
2308 ccw = erp->cpaddr;
2309 ccw->cmd_code = CCW_CMD_NOOP;
2310 ccw->flags = CCW_FLAG_CC;
2311 ccw++;
2312 ccw->cmd_code = CCW_CMD_TIC;
2313 ccw->cda = (long)(cqr->cpaddr);
2314 }
2315
2316 erp->function = dasd_3990_erp_add_erp;
2317 erp->refers = cqr;
2318 erp->startdev = device;
2319 erp->memdev = device;
2320 erp->block = cqr->block;
2321 erp->magic = cqr->magic;
2322 erp->expires = 0;
2323 erp->retries = 256;
2324 erp->buildclk = get_clock();
2325 erp->status = DASD_CQR_FILLED;
2326
2327 return erp;
2328}
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345static struct dasd_ccw_req *
2346dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr)
2347{
2348
2349 struct dasd_ccw_req *erp = NULL;
2350
2351
2352 erp = dasd_3990_erp_add_erp(cqr);
2353
2354
2355 if (erp != cqr) {
2356
2357 erp = dasd_3990_erp_inspect(erp);
2358 }
2359
2360 return erp;
2361
2362}
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382static int dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1,
2383 struct dasd_ccw_req *cqr2)
2384{
2385 char *sense1, *sense2;
2386
2387 if (cqr1->startdev != cqr2->startdev)
2388 return 0;
2389
2390 sense1 = dasd_get_sense(&cqr1->irb);
2391 sense2 = dasd_get_sense(&cqr2->irb);
2392
2393
2394 if (!sense1 != !sense2)
2395 return 0;
2396
2397 if (!sense1 && !sense2) {
2398 if ((scsw_cstat(&cqr1->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
2399 SCHN_STAT_CHN_CTRL_CHK)) ==
2400 (scsw_cstat(&cqr2->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
2401 SCHN_STAT_CHN_CTRL_CHK)))
2402 return 1;
2403 }
2404
2405 if (!(sense1 && sense2 &&
2406 (memcmp(sense1, sense2, 3) == 0) &&
2407 (sense1[27] == sense2[27]) &&
2408 (sense1[25] == sense2[25]))) {
2409
2410 return 0;
2411 }
2412
2413 return 1;
2414
2415}
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432static struct dasd_ccw_req *
2433dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr)
2434{
2435
2436 struct dasd_ccw_req *erp_head = cqr,
2437 *erp_match = NULL;
2438 int match = 0;
2439
2440 if (cqr->refers == NULL) {
2441 return NULL;
2442 }
2443
2444
2445 do {
2446 match = dasd_3990_erp_error_match(erp_head, cqr->refers);
2447 erp_match = cqr;
2448 cqr = cqr->refers;
2449
2450 } while ((cqr->refers != NULL) && (!match));
2451
2452 if (!match) {
2453 return NULL;
2454 }
2455
2456 return erp_match;
2457
2458}
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476static struct dasd_ccw_req *
2477dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
2478{
2479
2480 struct dasd_device *device = erp->startdev;
2481 char *sense = dasd_get_sense(&erp->irb);
2482
2483
2484 if ((erp->function == dasd_3990_erp_bus_out) ||
2485 (erp->function == dasd_3990_erp_action_1) ||
2486 (erp->function == dasd_3990_erp_action_4)) {
2487
2488 erp = dasd_3990_erp_action_1(erp);
2489
2490 } else if (erp->function == dasd_3990_erp_action_5) {
2491
2492
2493
2494 erp = dasd_3990_erp_action_1(erp);
2495
2496 if (sense && !(sense[2] & DASD_SENSE_BIT_0)) {
2497
2498
2499
2500
2501 switch (sense[25]) {
2502 case 0x17:
2503 case 0x57:{
2504 erp = dasd_3990_erp_DCTL(erp, 0x20);
2505 break;
2506 }
2507 case 0x18:
2508 case 0x58:{
2509 erp = dasd_3990_erp_DCTL(erp, 0x40);
2510 break;
2511 }
2512 case 0x19:
2513 case 0x59:{
2514 erp = dasd_3990_erp_DCTL(erp, 0x80);
2515 break;
2516 }
2517 default:
2518 DBF_DEV_EVENT(DBF_WARNING, device,
2519 "invalid subcommand modifier 0x%x "
2520 "for Diagnostic Control Command",
2521 sense[25]);
2522 }
2523 }
2524
2525
2526 } else if (sense &&
2527 ((erp->function == dasd_3990_erp_compound_retry) ||
2528 (erp->function == dasd_3990_erp_compound_path) ||
2529 (erp->function == dasd_3990_erp_compound_code) ||
2530 (erp->function == dasd_3990_erp_compound_config))) {
2531
2532 erp = dasd_3990_erp_compound(erp, sense);
2533
2534 } else {
2535
2536
2537
2538
2539 dev_err(&device->cdev->dev,
2540 "ERP %p has run out of retries and failed\n", erp);
2541
2542 erp->status = DASD_CQR_FAILED;
2543 }
2544
2545 return erp;
2546
2547}
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568static struct dasd_ccw_req *
2569dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
2570 struct dasd_ccw_req *erp)
2571{
2572
2573 struct dasd_device *device = erp_head->startdev;
2574 struct dasd_ccw_req *erp_done = erp_head;
2575 struct dasd_ccw_req *erp_free = NULL;
2576
2577
2578 while (erp_done != erp) {
2579
2580 if (erp_done == NULL)
2581 panic(PRINTK_HEADER "Programming error in ERP! The "
2582 "original request was lost\n");
2583
2584
2585 list_del(&erp_done->blocklist);
2586
2587 erp_free = erp_done;
2588 erp_done = erp_done->refers;
2589
2590
2591 dasd_free_erp_request(erp_free, erp_free->memdev);
2592
2593 }
2594
2595 if (erp->retries > 0) {
2596
2597 char *sense = dasd_get_sense(&erp->refers->irb);
2598
2599
2600 if (sense && erp->function == dasd_3990_erp_action_4) {
2601
2602 erp = dasd_3990_erp_action_4(erp, sense);
2603
2604 } else if (sense &&
2605 erp->function == dasd_3990_erp_action_1B_32) {
2606
2607 erp = dasd_3990_update_1B(erp, sense);
2608
2609 } else if (sense && erp->function == dasd_3990_erp_int_req) {
2610
2611 erp = dasd_3990_erp_int_req(erp);
2612
2613 } else {
2614
2615 DBF_DEV_EVENT(DBF_DEBUG, device,
2616 "%i retries left for erp %p",
2617 erp->retries, erp);
2618
2619
2620 erp->status = DASD_CQR_FILLED;
2621 }
2622
2623 } else {
2624
2625
2626 erp = dasd_3990_erp_further_erp(erp);
2627 }
2628
2629 return erp;
2630
2631}
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650struct dasd_ccw_req *
2651dasd_3990_erp_action(struct dasd_ccw_req * cqr)
2652{
2653 struct dasd_ccw_req *erp = NULL;
2654 struct dasd_device *device = cqr->startdev;
2655 struct dasd_ccw_req *temp_erp = NULL;
2656
2657 if (device->features & DASD_FEATURE_ERPLOG) {
2658
2659 dev_err(&device->cdev->dev,
2660 "ERP chain at BEGINNING of ERP-ACTION\n");
2661 for (temp_erp = cqr;
2662 temp_erp != NULL; temp_erp = temp_erp->refers) {
2663
2664 dev_err(&device->cdev->dev,
2665 "ERP %p (%02x) refers to %p\n",
2666 temp_erp, temp_erp->status,
2667 temp_erp->refers);
2668 }
2669 }
2670
2671
2672 if ((scsw_cstat(&cqr->irb.scsw) == 0x00) &&
2673 (scsw_dstat(&cqr->irb.scsw) ==
2674 (DEV_STAT_CHN_END | DEV_STAT_DEV_END))) {
2675
2676 DBF_DEV_EVENT(DBF_DEBUG, device,
2677 "ERP called for successful request %p"
2678 " - NO ERP necessary", cqr);
2679
2680 cqr->status = DASD_CQR_DONE;
2681
2682 return cqr;
2683 }
2684
2685
2686 erp = dasd_3990_erp_in_erp(cqr);
2687
2688 if (erp == NULL) {
2689
2690 erp = dasd_3990_erp_additional_erp(cqr);
2691 } else {
2692
2693 erp = dasd_3990_erp_handle_match_erp(cqr, erp);
2694 }
2695
2696 if (device->features & DASD_FEATURE_ERPLOG) {
2697
2698 dev_err(&device->cdev->dev,
2699 "ERP chain at END of ERP-ACTION\n");
2700 for (temp_erp = erp;
2701 temp_erp != NULL; temp_erp = temp_erp->refers) {
2702
2703 dev_err(&device->cdev->dev,
2704 "ERP %p (%02x) refers to %p\n",
2705 temp_erp, temp_erp->status,
2706 temp_erp->refers);
2707 }
2708 }
2709
2710
2711 if (list_empty(&erp->blocklist)) {
2712 cqr->status = DASD_CQR_IN_ERP;
2713
2714 list_add_tail(&erp->blocklist, &cqr->blocklist);
2715 }
2716
2717
2718
2719 return erp;
2720
2721}
2722
