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8
9#define KMSG_COMPONENT "dasd-eckd"
10
11#include <linux/timer.h>
12#include <asm/idals.h>
13
14#define PRINTK_HEADER "dasd_erp(3990): "
15
16#include "dasd_int.h"
17#include "dasd_eckd.h"
18
19
20struct DCTL_data {
21 unsigned char subcommand;
22 unsigned char modifier;
23 unsigned short res;
24} __attribute__ ((packed));
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51static struct dasd_ccw_req *
52dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
53{
54 struct dasd_ccw_req *cqr = erp->refers;
55
56 dasd_free_erp_request(erp, erp->memdev);
57 cqr->status = final_status;
58 return cqr;
59
60}
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69
70static void dasd_3990_erp_block_queue(struct dasd_ccw_req *erp, int expires)
71{
72
73 struct dasd_device *device = erp->startdev;
74 unsigned long flags;
75
76 DBF_DEV_EVENT(DBF_INFO, device,
77 "blocking request queue for %is", expires/HZ);
78
79 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
80 dasd_device_set_stop_bits(device, DASD_STOPPED_PENDING);
81 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
82 erp->status = DASD_CQR_FILLED;
83 if (erp->block)
84 dasd_block_set_timer(erp->block, expires);
85 else
86 dasd_device_set_timer(device, expires);
87}
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101static struct dasd_ccw_req *
102dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
103{
104
105 struct dasd_device *device = erp->startdev;
106
107
108
109
110 if (erp->function != dasd_3990_erp_int_req) {
111
112 erp->retries = 256;
113 erp->function = dasd_3990_erp_int_req;
114
115 } else {
116
117
118 dev_err(&device->cdev->dev,
119 "is offline or not installed - "
120 "INTERVENTION REQUIRED!!\n");
121
122 dasd_3990_erp_block_queue(erp, 60*HZ);
123 }
124
125 return erp;
126
127}
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142
143static void
144dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
145{
146 struct dasd_device *device = erp->startdev;
147 __u8 opm;
148 unsigned long flags;
149
150
151 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
152 opm = ccw_device_get_path_mask(device->cdev);
153 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
154 if (erp->lpm == 0)
155 erp->lpm = dasd_path_get_opm(device) &
156 ~(erp->irb.esw.esw0.sublog.lpum);
157 else
158 erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum);
159
160 if ((erp->lpm & opm) != 0x00) {
161
162 DBF_DEV_EVENT(DBF_WARNING, device,
163 "try alternate lpm=%x (lpum=%x / opm=%x)",
164 erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm);
165
166
167 erp->status = DASD_CQR_FILLED;
168 erp->retries = 10;
169 } else {
170 dev_err(&device->cdev->dev,
171 "The DASD cannot be reached on any path (lpum=%x"
172 "/opm=%x)\n", erp->irb.esw.esw0.sublog.lpum, opm);
173
174
175 erp->status = DASD_CQR_FAILED;
176 }
177}
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193
194static struct dasd_ccw_req *
195dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
196{
197
198 struct dasd_device *device = erp->startdev;
199 struct DCTL_data *DCTL_data;
200 struct ccw1 *ccw;
201 struct dasd_ccw_req *dctl_cqr;
202
203 dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1,
204 sizeof(struct DCTL_data),
205 device);
206 if (IS_ERR(dctl_cqr)) {
207 dev_err(&device->cdev->dev,
208 "Unable to allocate DCTL-CQR\n");
209 erp->status = DASD_CQR_FAILED;
210 return erp;
211 }
212
213 DCTL_data = dctl_cqr->data;
214
215 DCTL_data->subcommand = 0x02;
216 DCTL_data->modifier = modifier;
217
218 ccw = dctl_cqr->cpaddr;
219 memset(ccw, 0, sizeof(struct ccw1));
220 ccw->cmd_code = CCW_CMD_DCTL;
221 ccw->count = 4;
222 ccw->cda = (__u32)(addr_t) DCTL_data;
223 dctl_cqr->flags = erp->flags;
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_tod_clock();
233
234 dctl_cqr->status = DASD_CQR_FILLED;
235
236 return dctl_cqr;
237
238}
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261static struct dasd_ccw_req *dasd_3990_erp_action_1_sec(struct dasd_ccw_req *erp)
262{
263 erp->function = dasd_3990_erp_action_1_sec;
264 dasd_3990_erp_alternate_path(erp);
265 return erp;
266}
267
268static struct dasd_ccw_req *dasd_3990_erp_action_1(struct dasd_ccw_req *erp)
269{
270 erp->function = dasd_3990_erp_action_1;
271 dasd_3990_erp_alternate_path(erp);
272 if (erp->status == DASD_CQR_FAILED &&
273 !test_bit(DASD_CQR_VERIFY_PATH, &erp->flags)) {
274 erp->status = DASD_CQR_FILLED;
275 erp->retries = 10;
276 erp->lpm = dasd_path_get_opm(erp->startdev);
277 erp->function = dasd_3990_erp_action_1_sec;
278 }
279 return erp;
280}
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300static struct dasd_ccw_req *
301dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
302{
303
304 struct dasd_device *device = erp->startdev;
305
306
307
308
309 if (erp->function != dasd_3990_erp_action_4) {
310
311 DBF_DEV_EVENT(DBF_INFO, device, "%s",
312 "dasd_3990_erp_action_4: first time retry");
313
314 erp->retries = 256;
315 erp->function = dasd_3990_erp_action_4;
316
317 } else {
318 if (sense && (sense[25] == 0x1D)) {
319
320 DBF_DEV_EVENT(DBF_INFO, device,
321 "waiting for state change pending "
322 "interrupt, %d retries left",
323 erp->retries);
324
325 dasd_3990_erp_block_queue(erp, 30*HZ);
326
327 } else if (sense && (sense[25] == 0x1E)) {
328 DBF_DEV_EVENT(DBF_INFO, device,
329 "busy - redriving request later, "
330 "%d retries left",
331 erp->retries);
332 dasd_3990_erp_block_queue(erp, HZ);
333 } else {
334
335 DBF_DEV_EVENT(DBF_INFO, device,
336 "redriving request immediately, "
337 "%d retries left",
338 erp->retries);
339 erp->status = DASD_CQR_FILLED;
340 }
341 }
342
343 return erp;
344
345}
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367static struct dasd_ccw_req *
368dasd_3990_erp_action_5(struct dasd_ccw_req * erp)
369{
370
371
372 erp->retries = 10;
373 erp->function = dasd_3990_erp_action_5;
374
375 return erp;
376
377}
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393static void
394dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense)
395{
396
397 struct dasd_device *device = erp->startdev;
398 char msg_format = (sense[7] & 0xF0);
399 char msg_no = (sense[7] & 0x0F);
400 char errorstring[ERRORLENGTH];
401
402 switch (msg_format) {
403 case 0x00:
404
405 if (sense[1] & 0x10) {
406
407 switch (msg_no) {
408 case 0x00:
409 break;
410 case 0x01:
411 dev_warn(&device->cdev->dev,
412 "FORMAT 0 - Invalid Command\n");
413 break;
414 case 0x02:
415 dev_warn(&device->cdev->dev,
416 "FORMAT 0 - Invalid Command "
417 "Sequence\n");
418 break;
419 case 0x03:
420 dev_warn(&device->cdev->dev,
421 "FORMAT 0 - CCW Count less than "
422 "required\n");
423 break;
424 case 0x04:
425 dev_warn(&device->cdev->dev,
426 "FORMAT 0 - Invalid Parameter\n");
427 break;
428 case 0x05:
429 dev_warn(&device->cdev->dev,
430 "FORMAT 0 - Diagnostic of Special"
431 " Command Violates File Mask\n");
432 break;
433 case 0x07:
434 dev_warn(&device->cdev->dev,
435 "FORMAT 0 - Channel Returned with "
436 "Incorrect retry CCW\n");
437 break;
438 case 0x08:
439 dev_warn(&device->cdev->dev,
440 "FORMAT 0 - Reset Notification\n");
441 break;
442 case 0x09:
443 dev_warn(&device->cdev->dev,
444 "FORMAT 0 - Storage Path Restart\n");
445 break;
446 case 0x0A:
447 dev_warn(&device->cdev->dev,
448 "FORMAT 0 - Channel requested "
449 "... %02x\n", sense[8]);
450 break;
451 case 0x0B:
452 dev_warn(&device->cdev->dev,
453 "FORMAT 0 - Invalid Defective/"
454 "Alternate Track Pointer\n");
455 break;
456 case 0x0C:
457 dev_warn(&device->cdev->dev,
458 "FORMAT 0 - DPS Installation "
459 "Check\n");
460 break;
461 case 0x0E:
462 dev_warn(&device->cdev->dev,
463 "FORMAT 0 - Command Invalid on "
464 "Secondary Address\n");
465 break;
466 case 0x0F:
467 dev_warn(&device->cdev->dev,
468 "FORMAT 0 - Status Not As "
469 "Required: reason %02x\n",
470 sense[8]);
471 break;
472 default:
473 dev_warn(&device->cdev->dev,
474 "FORMAT 0 - Reserved\n");
475 }
476 } else {
477 switch (msg_no) {
478 case 0x00:
479 break;
480 case 0x01:
481 dev_warn(&device->cdev->dev,
482 "FORMAT 0 - Device Error "
483 "Source\n");
484 break;
485 case 0x02:
486 dev_warn(&device->cdev->dev,
487 "FORMAT 0 - Reserved\n");
488 break;
489 case 0x03:
490 dev_warn(&device->cdev->dev,
491 "FORMAT 0 - Device Fenced - "
492 "device = %02x\n", sense[4]);
493 break;
494 case 0x04:
495 dev_warn(&device->cdev->dev,
496 "FORMAT 0 - Data Pinned for "
497 "Device\n");
498 break;
499 default:
500 dev_warn(&device->cdev->dev,
501 "FORMAT 0 - Reserved\n");
502 }
503 }
504 break;
505
506 case 0x10:
507 switch (msg_no) {
508 case 0x00:
509 break;
510 case 0x01:
511 dev_warn(&device->cdev->dev,
512 "FORMAT 1 - Device Status 1 not as "
513 "expected\n");
514 break;
515 case 0x03:
516 dev_warn(&device->cdev->dev,
517 "FORMAT 1 - Index missing\n");
518 break;
519 case 0x04:
520 dev_warn(&device->cdev->dev,
521 "FORMAT 1 - Interruption cannot be "
522 "reset\n");
523 break;
524 case 0x05:
525 dev_warn(&device->cdev->dev,
526 "FORMAT 1 - Device did not respond to "
527 "selection\n");
528 break;
529 case 0x06:
530 dev_warn(&device->cdev->dev,
531 "FORMAT 1 - Device check-2 error or Set "
532 "Sector is not complete\n");
533 break;
534 case 0x07:
535 dev_warn(&device->cdev->dev,
536 "FORMAT 1 - Head address does not "
537 "compare\n");
538 break;
539 case 0x08:
540 dev_warn(&device->cdev->dev,
541 "FORMAT 1 - Device status 1 not valid\n");
542 break;
543 case 0x09:
544 dev_warn(&device->cdev->dev,
545 "FORMAT 1 - Device not ready\n");
546 break;
547 case 0x0A:
548 dev_warn(&device->cdev->dev,
549 "FORMAT 1 - Track physical address did "
550 "not compare\n");
551 break;
552 case 0x0B:
553 dev_warn(&device->cdev->dev,
554 "FORMAT 1 - Missing device address bit\n");
555 break;
556 case 0x0C:
557 dev_warn(&device->cdev->dev,
558 "FORMAT 1 - Drive motor switch is off\n");
559 break;
560 case 0x0D:
561 dev_warn(&device->cdev->dev,
562 "FORMAT 1 - Seek incomplete\n");
563 break;
564 case 0x0E:
565 dev_warn(&device->cdev->dev,
566 "FORMAT 1 - Cylinder address did not "
567 "compare\n");
568 break;
569 case 0x0F:
570 dev_warn(&device->cdev->dev,
571 "FORMAT 1 - Offset active cannot be "
572 "reset\n");
573 break;
574 default:
575 dev_warn(&device->cdev->dev,
576 "FORMAT 1 - Reserved\n");
577 }
578 break;
579
580 case 0x20:
581 switch (msg_no) {
582 case 0x08:
583 dev_warn(&device->cdev->dev,
584 "FORMAT 2 - 3990 check-2 error\n");
585 break;
586 case 0x0E:
587 dev_warn(&device->cdev->dev,
588 "FORMAT 2 - Support facility errors\n");
589 break;
590 case 0x0F:
591 dev_warn(&device->cdev->dev,
592 "FORMAT 2 - Microcode detected error "
593 "%02x\n",
594 sense[8]);
595 break;
596 default:
597 dev_warn(&device->cdev->dev,
598 "FORMAT 2 - Reserved\n");
599 }
600 break;
601
602 case 0x30:
603 switch (msg_no) {
604 case 0x0F:
605 dev_warn(&device->cdev->dev,
606 "FORMAT 3 - Allegiance terminated\n");
607 break;
608 default:
609 dev_warn(&device->cdev->dev,
610 "FORMAT 3 - Reserved\n");
611 }
612 break;
613
614 case 0x40:
615 switch (msg_no) {
616 case 0x00:
617 dev_warn(&device->cdev->dev,
618 "FORMAT 4 - Home address area error\n");
619 break;
620 case 0x01:
621 dev_warn(&device->cdev->dev,
622 "FORMAT 4 - Count area error\n");
623 break;
624 case 0x02:
625 dev_warn(&device->cdev->dev,
626 "FORMAT 4 - Key area error\n");
627 break;
628 case 0x03:
629 dev_warn(&device->cdev->dev,
630 "FORMAT 4 - Data area error\n");
631 break;
632 case 0x04:
633 dev_warn(&device->cdev->dev,
634 "FORMAT 4 - No sync byte in home address "
635 "area\n");
636 break;
637 case 0x05:
638 dev_warn(&device->cdev->dev,
639 "FORMAT 4 - No sync byte in count address "
640 "area\n");
641 break;
642 case 0x06:
643 dev_warn(&device->cdev->dev,
644 "FORMAT 4 - No sync byte in key area\n");
645 break;
646 case 0x07:
647 dev_warn(&device->cdev->dev,
648 "FORMAT 4 - No sync byte in data area\n");
649 break;
650 case 0x08:
651 dev_warn(&device->cdev->dev,
652 "FORMAT 4 - Home address area error; "
653 "offset active\n");
654 break;
655 case 0x09:
656 dev_warn(&device->cdev->dev,
657 "FORMAT 4 - Count area error; offset "
658 "active\n");
659 break;
660 case 0x0A:
661 dev_warn(&device->cdev->dev,
662 "FORMAT 4 - Key area error; offset "
663 "active\n");
664 break;
665 case 0x0B:
666 dev_warn(&device->cdev->dev,
667 "FORMAT 4 - Data area error; "
668 "offset active\n");
669 break;
670 case 0x0C:
671 dev_warn(&device->cdev->dev,
672 "FORMAT 4 - No sync byte in home "
673 "address area; offset active\n");
674 break;
675 case 0x0D:
676 dev_warn(&device->cdev->dev,
677 "FORMAT 4 - No sync byte in count "
678 "address area; offset active\n");
679 break;
680 case 0x0E:
681 dev_warn(&device->cdev->dev,
682 "FORMAT 4 - No sync byte in key area; "
683 "offset active\n");
684 break;
685 case 0x0F:
686 dev_warn(&device->cdev->dev,
687 "FORMAT 4 - No sync byte in data area; "
688 "offset active\n");
689 break;
690 default:
691 dev_warn(&device->cdev->dev,
692 "FORMAT 4 - Reserved\n");
693 }
694 break;
695
696 case 0x50:
697 switch (msg_no) {
698 case 0x00:
699 dev_warn(&device->cdev->dev,
700 "FORMAT 5 - Data Check in the "
701 "home address area\n");
702 break;
703 case 0x01:
704 dev_warn(&device->cdev->dev,
705 "FORMAT 5 - Data Check in the count "
706 "area\n");
707 break;
708 case 0x02:
709 dev_warn(&device->cdev->dev,
710 "FORMAT 5 - Data Check in the key area\n");
711 break;
712 case 0x03:
713 dev_warn(&device->cdev->dev,
714 "FORMAT 5 - Data Check in the data "
715 "area\n");
716 break;
717 case 0x08:
718 dev_warn(&device->cdev->dev,
719 "FORMAT 5 - Data Check in the "
720 "home address area; offset active\n");
721 break;
722 case 0x09:
723 dev_warn(&device->cdev->dev,
724 "FORMAT 5 - Data Check in the count area; "
725 "offset active\n");
726 break;
727 case 0x0A:
728 dev_warn(&device->cdev->dev,
729 "FORMAT 5 - Data Check in the key area; "
730 "offset active\n");
731 break;
732 case 0x0B:
733 dev_warn(&device->cdev->dev,
734 "FORMAT 5 - Data Check in the data area; "
735 "offset active\n");
736 break;
737 default:
738 dev_warn(&device->cdev->dev,
739 "FORMAT 5 - Reserved\n");
740 }
741 break;
742
743 case 0x60:
744 switch (msg_no) {
745 case 0x00:
746 dev_warn(&device->cdev->dev,
747 "FORMAT 6 - Overrun on channel A\n");
748 break;
749 case 0x01:
750 dev_warn(&device->cdev->dev,
751 "FORMAT 6 - Overrun on channel B\n");
752 break;
753 case 0x02:
754 dev_warn(&device->cdev->dev,
755 "FORMAT 6 - Overrun on channel C\n");
756 break;
757 case 0x03:
758 dev_warn(&device->cdev->dev,
759 "FORMAT 6 - Overrun on channel D\n");
760 break;
761 case 0x04:
762 dev_warn(&device->cdev->dev,
763 "FORMAT 6 - Overrun on channel E\n");
764 break;
765 case 0x05:
766 dev_warn(&device->cdev->dev,
767 "FORMAT 6 - Overrun on channel F\n");
768 break;
769 case 0x06:
770 dev_warn(&device->cdev->dev,
771 "FORMAT 6 - Overrun on channel G\n");
772 break;
773 case 0x07:
774 dev_warn(&device->cdev->dev,
775 "FORMAT 6 - Overrun on channel H\n");
776 break;
777 default:
778 dev_warn(&device->cdev->dev,
779 "FORMAT 6 - Reserved\n");
780 }
781 break;
782
783 case 0x70:
784 switch (msg_no) {
785 case 0x00:
786 dev_warn(&device->cdev->dev,
787 "FORMAT 7 - RCC initiated by a connection "
788 "check alert\n");
789 break;
790 case 0x01:
791 dev_warn(&device->cdev->dev,
792 "FORMAT 7 - RCC 1 sequence not "
793 "successful\n");
794 break;
795 case 0x02:
796 dev_warn(&device->cdev->dev,
797 "FORMAT 7 - RCC 1 and RCC 2 sequences not "
798 "successful\n");
799 break;
800 case 0x03:
801 dev_warn(&device->cdev->dev,
802 "FORMAT 7 - Invalid tag-in during "
803 "selection sequence\n");
804 break;
805 case 0x04:
806 dev_warn(&device->cdev->dev,
807 "FORMAT 7 - extra RCC required\n");
808 break;
809 case 0x05:
810 dev_warn(&device->cdev->dev,
811 "FORMAT 7 - Invalid DCC selection "
812 "response or timeout\n");
813 break;
814 case 0x06:
815 dev_warn(&device->cdev->dev,
816 "FORMAT 7 - Missing end operation; device "
817 "transfer complete\n");
818 break;
819 case 0x07:
820 dev_warn(&device->cdev->dev,
821 "FORMAT 7 - Missing end operation; device "
822 "transfer incomplete\n");
823 break;
824 case 0x08:
825 dev_warn(&device->cdev->dev,
826 "FORMAT 7 - Invalid tag-in for an "
827 "immediate command sequence\n");
828 break;
829 case 0x09:
830 dev_warn(&device->cdev->dev,
831 "FORMAT 7 - Invalid tag-in for an "
832 "extended command sequence\n");
833 break;
834 case 0x0A:
835 dev_warn(&device->cdev->dev,
836 "FORMAT 7 - 3990 microcode time out when "
837 "stopping selection\n");
838 break;
839 case 0x0B:
840 dev_warn(&device->cdev->dev,
841 "FORMAT 7 - No response to selection "
842 "after a poll interruption\n");
843 break;
844 case 0x0C:
845 dev_warn(&device->cdev->dev,
846 "FORMAT 7 - Permanent path error (DASD "
847 "controller not available)\n");
848 break;
849 case 0x0D:
850 dev_warn(&device->cdev->dev,
851 "FORMAT 7 - DASD controller not available"
852 " on disconnected command chain\n");
853 break;
854 default:
855 dev_warn(&device->cdev->dev,
856 "FORMAT 7 - Reserved\n");
857 }
858 break;
859
860 case 0x80:
861 switch (msg_no) {
862 case 0x00:
863 case 0x01:
864 dev_warn(&device->cdev->dev,
865 "FORMAT 8 - Error correction code "
866 "hardware fault\n");
867 break;
868 case 0x03:
869 dev_warn(&device->cdev->dev,
870 "FORMAT 8 - Unexpected end operation "
871 "response code\n");
872 break;
873 case 0x04:
874 dev_warn(&device->cdev->dev,
875 "FORMAT 8 - End operation with transfer "
876 "count not zero\n");
877 break;
878 case 0x05:
879 dev_warn(&device->cdev->dev,
880 "FORMAT 8 - End operation with transfer "
881 "count zero\n");
882 break;
883 case 0x06:
884 dev_warn(&device->cdev->dev,
885 "FORMAT 8 - DPS checks after a system "
886 "reset or selective reset\n");
887 break;
888 case 0x07:
889 dev_warn(&device->cdev->dev,
890 "FORMAT 8 - DPS cannot be filled\n");
891 break;
892 case 0x08:
893 dev_warn(&device->cdev->dev,
894 "FORMAT 8 - Short busy time-out during "
895 "device selection\n");
896 break;
897 case 0x09:
898 dev_warn(&device->cdev->dev,
899 "FORMAT 8 - DASD controller failed to "
900 "set or reset the long busy latch\n");
901 break;
902 case 0x0A:
903 dev_warn(&device->cdev->dev,
904 "FORMAT 8 - No interruption from device "
905 "during a command chain\n");
906 break;
907 default:
908 dev_warn(&device->cdev->dev,
909 "FORMAT 8 - Reserved\n");
910 }
911 break;
912
913 case 0x90:
914 switch (msg_no) {
915 case 0x00:
916 break;
917 case 0x06:
918 dev_warn(&device->cdev->dev,
919 "FORMAT 9 - Device check-2 error\n");
920 break;
921 case 0x07:
922 dev_warn(&device->cdev->dev,
923 "FORMAT 9 - Head address did not "
924 "compare\n");
925 break;
926 case 0x0A:
927 dev_warn(&device->cdev->dev,
928 "FORMAT 9 - Track physical address did "
929 "not compare while oriented\n");
930 break;
931 case 0x0E:
932 dev_warn(&device->cdev->dev,
933 "FORMAT 9 - Cylinder address did not "
934 "compare\n");
935 break;
936 default:
937 dev_warn(&device->cdev->dev,
938 "FORMAT 9 - Reserved\n");
939 }
940 break;
941
942 case 0xF0:
943 switch (msg_no) {
944 case 0x00:
945 dev_warn(&device->cdev->dev,
946 "FORMAT F - Operation Terminated\n");
947 break;
948 case 0x01:
949 dev_warn(&device->cdev->dev,
950 "FORMAT F - Subsystem Processing Error\n");
951 break;
952 case 0x02:
953 dev_warn(&device->cdev->dev,
954 "FORMAT F - Cache or nonvolatile storage "
955 "equipment failure\n");
956 break;
957 case 0x04:
958 dev_warn(&device->cdev->dev,
959 "FORMAT F - Caching terminated\n");
960 break;
961 case 0x06:
962 dev_warn(&device->cdev->dev,
963 "FORMAT F - Cache fast write access not "
964 "authorized\n");
965 break;
966 case 0x07:
967 dev_warn(&device->cdev->dev,
968 "FORMAT F - Track format incorrect\n");
969 break;
970 case 0x09:
971 dev_warn(&device->cdev->dev,
972 "FORMAT F - Caching reinitiated\n");
973 break;
974 case 0x0A:
975 dev_warn(&device->cdev->dev,
976 "FORMAT F - Nonvolatile storage "
977 "terminated\n");
978 break;
979 case 0x0B:
980 dev_warn(&device->cdev->dev,
981 "FORMAT F - Volume is suspended duplex\n");
982
983 dasd_eer_write(device, erp->refers,
984 DASD_EER_PPRCSUSPEND);
985 break;
986 case 0x0C:
987 dev_warn(&device->cdev->dev,
988 "FORMAT F - Subsystem status cannot be "
989 "determined\n");
990 break;
991 case 0x0D:
992 dev_warn(&device->cdev->dev,
993 "FORMAT F - Caching status reset to "
994 "default\n");
995 break;
996 case 0x0E:
997 dev_warn(&device->cdev->dev,
998 "FORMAT F - DASD Fast Write inhibited\n");
999 break;
1000 default:
1001 dev_warn(&device->cdev->dev,
1002 "FORMAT F - Reserved\n");
1003 }
1004 break;
1005
1006 default:
1007
1008 snprintf(errorstring, ERRORLENGTH, "03 %x02", msg_format);
1009 dev_err(&device->cdev->dev,
1010 "An error occurred in the DASD device driver, "
1011 "reason=%s\n", errorstring);
1012 break;
1013 }
1014
1015}
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030static struct dasd_ccw_req *
1031dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
1032{
1033
1034 struct dasd_device *device = erp->startdev;
1035
1036 erp->function = dasd_3990_erp_com_rej;
1037
1038
1039 if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1040
1041 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1042 "Command Reject - environmental data present");
1043
1044 dasd_3990_handle_env_data(erp, sense);
1045
1046 erp->retries = 5;
1047
1048 } else if (sense[1] & SNS1_WRITE_INHIBITED) {
1049 dev_err(&device->cdev->dev, "An I/O request was rejected"
1050 " because writing is inhibited\n");
1051 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1052 } else {
1053
1054
1055 if (!test_bit(DASD_CQR_SUPPRESS_CR, &erp->flags))
1056 dev_err(&device->cdev->dev,
1057 "An error occurred in the DASD device driver, reason=09\n");
1058
1059 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1060 }
1061
1062 return erp;
1063
1064}
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077static struct dasd_ccw_req *
1078dasd_3990_erp_bus_out(struct dasd_ccw_req * erp)
1079{
1080
1081 struct dasd_device *device = erp->startdev;
1082
1083
1084
1085
1086 if (erp->function != dasd_3990_erp_bus_out) {
1087 erp->retries = 256;
1088 erp->function = dasd_3990_erp_bus_out;
1089
1090 } else {
1091
1092
1093 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1094 "bus out parity error or BOPC requested by "
1095 "channel");
1096
1097 dasd_3990_erp_block_queue(erp, 60*HZ);
1098
1099 }
1100
1101 return erp;
1102
1103}
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116static struct dasd_ccw_req *
1117dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense)
1118{
1119
1120 struct dasd_device *device = erp->startdev;
1121
1122 erp->function = dasd_3990_erp_equip_check;
1123
1124 if (sense[1] & SNS1_WRITE_INHIBITED) {
1125 dev_info(&device->cdev->dev,
1126 "Write inhibited path encountered\n");
1127
1128
1129
1130 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1131 "device driver, reason=%s\n", "04");
1132
1133 erp = dasd_3990_erp_action_1(erp);
1134
1135 } else if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1136
1137 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1138 "Equipment Check - " "environmental data present");
1139
1140 dasd_3990_handle_env_data(erp, sense);
1141
1142 erp = dasd_3990_erp_action_4(erp, sense);
1143
1144 } else if (sense[1] & SNS1_PERM_ERR) {
1145
1146 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1147 "Equipment Check - retry exhausted or "
1148 "undesirable");
1149
1150 erp = dasd_3990_erp_action_1(erp);
1151
1152 } else {
1153
1154
1155 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1156 "Equipment check or processing error");
1157
1158 erp = dasd_3990_erp_action_5(erp);
1159 }
1160 return erp;
1161
1162}
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175static struct dasd_ccw_req *
1176dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense)
1177{
1178
1179 struct dasd_device *device = erp->startdev;
1180
1181 erp->function = dasd_3990_erp_data_check;
1182
1183 if (sense[2] & SNS2_CORRECTABLE) {
1184
1185
1186 dev_emerg(&device->cdev->dev,
1187 "Data recovered during retry with PCI "
1188 "fetch mode active\n");
1189
1190
1191 panic("No way to inform application about the possibly "
1192 "incorrect data");
1193
1194 } else if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1195
1196 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1197 "Uncorrectable data check recovered secondary "
1198 "addr of duplex pair");
1199
1200 erp = dasd_3990_erp_action_4(erp, sense);
1201
1202 } else if (sense[1] & SNS1_PERM_ERR) {
1203
1204 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1205 "Uncorrectable data check with internal "
1206 "retry exhausted");
1207
1208 erp = dasd_3990_erp_action_1(erp);
1209
1210 } else {
1211
1212 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1213 "Uncorrectable data check with retry count "
1214 "exhausted...");
1215
1216 erp = dasd_3990_erp_action_5(erp);
1217 }
1218
1219 return erp;
1220
1221}
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234static struct dasd_ccw_req *
1235dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense)
1236{
1237
1238 struct dasd_device *device = erp->startdev;
1239
1240 erp->function = dasd_3990_erp_overrun;
1241
1242 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1243 "Overrun - service overrun or overrun"
1244 " error requested by channel");
1245
1246 erp = dasd_3990_erp_action_5(erp);
1247
1248 return erp;
1249
1250}
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263static struct dasd_ccw_req *
1264dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense)
1265{
1266
1267 struct dasd_device *device = erp->startdev;
1268
1269 erp->function = dasd_3990_erp_inv_format;
1270
1271 if (sense[2] & SNS2_ENV_DATA_PRESENT) {
1272
1273 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1274 "Track format error when destaging or "
1275 "staging data");
1276
1277 dasd_3990_handle_env_data(erp, sense);
1278
1279 erp = dasd_3990_erp_action_4(erp, sense);
1280
1281 } else {
1282
1283 dev_err(&device->cdev->dev,
1284 "An error occurred in the DASD device driver, "
1285 "reason=%s\n", "06");
1286
1287 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1288 }
1289
1290 return erp;
1291
1292}
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305static struct dasd_ccw_req *
1306dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense)
1307{
1308
1309 struct dasd_device *device = default_erp->startdev;
1310
1311 dev_err(&device->cdev->dev,
1312 "The cylinder data for accessing the DASD is inconsistent\n");
1313
1314
1315 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1316
1317}
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330static struct dasd_ccw_req *
1331dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense)
1332{
1333
1334 struct dasd_device *device = erp->startdev;
1335
1336 erp->function = dasd_3990_erp_env_data;
1337
1338 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Environmental data present");
1339
1340 dasd_3990_handle_env_data(erp, sense);
1341
1342
1343 if (sense[7] != 0x0F) {
1344 erp = dasd_3990_erp_action_4(erp, sense);
1345 } else {
1346 erp->status = DASD_CQR_FILLED;
1347 }
1348
1349 return erp;
1350
1351}
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365static struct dasd_ccw_req *
1366dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense)
1367{
1368
1369 struct dasd_device *device = default_erp->startdev;
1370
1371
1372
1373
1374
1375
1376 if (!test_bit(DASD_CQR_SUPPRESS_NRF, &default_erp->flags))
1377 dev_err(&device->cdev->dev,
1378 "The specified record was not found\n");
1379
1380 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1381
1382}
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397static struct dasd_ccw_req *
1398dasd_3990_erp_file_prot(struct dasd_ccw_req * erp)
1399{
1400
1401 struct dasd_device *device = erp->startdev;
1402
1403
1404
1405
1406
1407
1408 if (!test_bit(DASD_CQR_SUPPRESS_FP, &erp->flags))
1409 dev_err(&device->cdev->dev,
1410 "Accessing the DASD failed because of a hardware error\n");
1411
1412 return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
1413
1414}
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431static struct dasd_ccw_req *dasd_3990_erp_inspect_alias(
1432 struct dasd_ccw_req *erp)
1433{
1434 struct dasd_ccw_req *cqr = erp->refers;
1435 char *sense;
1436
1437 if (cqr->block &&
1438 (cqr->block->base != cqr->startdev)) {
1439
1440 sense = dasd_get_sense(&erp->refers->irb);
1441
1442
1443
1444 if (!test_bit(DASD_FLAG_OFFLINE, &cqr->startdev->flags) && sense
1445 && (sense[0] == 0x10) && (sense[7] == 0x0F)
1446 && (sense[8] == 0x67)) {
1447
1448
1449
1450
1451
1452 dasd_alias_remove_device(cqr->startdev);
1453
1454
1455 dasd_reload_device(cqr->startdev);
1456 }
1457
1458 if (cqr->startdev->features & DASD_FEATURE_ERPLOG) {
1459 DBF_DEV_EVENT(DBF_ERR, cqr->startdev,
1460 "ERP on alias device for request %p,"
1461 " recover on base device %s", cqr,
1462 dev_name(&cqr->block->base->cdev->dev));
1463 }
1464 dasd_eckd_reset_ccw_to_base_io(cqr);
1465 erp->startdev = cqr->block->base;
1466 erp->function = dasd_3990_erp_inspect_alias;
1467 return erp;
1468 } else
1469 return NULL;
1470}
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487static struct dasd_ccw_req *
1488dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense)
1489{
1490
1491 struct dasd_ccw_req *erp_filled = NULL;
1492
1493
1494
1495 if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) {
1496 erp_filled = dasd_3990_erp_com_rej(erp, sense);
1497 }
1498
1499 if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) {
1500 erp_filled = dasd_3990_erp_int_req(erp);
1501 }
1502
1503 if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) {
1504 erp_filled = dasd_3990_erp_bus_out(erp);
1505 }
1506
1507 if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) {
1508 erp_filled = dasd_3990_erp_equip_check(erp, sense);
1509 }
1510
1511 if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) {
1512 erp_filled = dasd_3990_erp_data_check(erp, sense);
1513 }
1514
1515 if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) {
1516 erp_filled = dasd_3990_erp_overrun(erp, sense);
1517 }
1518
1519 if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) {
1520 erp_filled = dasd_3990_erp_inv_format(erp, sense);
1521 }
1522
1523 if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) {
1524 erp_filled = dasd_3990_erp_EOC(erp, sense);
1525 }
1526
1527 if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) {
1528 erp_filled = dasd_3990_erp_env_data(erp, sense);
1529 }
1530
1531 if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) {
1532 erp_filled = dasd_3990_erp_no_rec(erp, sense);
1533 }
1534
1535 if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) {
1536 erp_filled = dasd_3990_erp_file_prot(erp);
1537 }
1538
1539 if (erp_filled == NULL) {
1540
1541 erp_filled = erp;
1542 }
1543
1544 return erp_filled;
1545
1546}
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567static struct dasd_ccw_req *
1568dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense)
1569{
1570
1571 struct dasd_device *device = erp->startdev;
1572
1573 erp->retries = 256;
1574 erp->function = dasd_3990_erp_action_10_32;
1575
1576 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Perform logging requested");
1577
1578 return erp;
1579
1580}
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601static struct dasd_ccw_req *
1602dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
1603{
1604
1605 struct dasd_device *device = default_erp->startdev;
1606 __u32 cpa = 0;
1607 struct dasd_ccw_req *cqr;
1608 struct dasd_ccw_req *erp;
1609 struct DE_eckd_data *DE_data;
1610 struct PFX_eckd_data *PFX_data;
1611 char *LO_data;
1612 struct ccw1 *ccw, *oldccw;
1613
1614 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1615 "Write not finished because of unexpected condition");
1616
1617 default_erp->function = dasd_3990_erp_action_1B_32;
1618
1619
1620 cqr = default_erp;
1621
1622 while (cqr->refers != NULL) {
1623 cqr = cqr->refers;
1624 }
1625
1626 if (scsw_is_tm(&cqr->irb.scsw)) {
1627 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1628 "32 bit sense, action 1B is not defined"
1629 " in transport mode - just retry");
1630 return default_erp;
1631 }
1632
1633
1634 if (sense[1] & 0x01) {
1635 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1636 "Imprecise ending is set - just retry");
1637
1638 return default_erp;
1639 }
1640
1641
1642
1643 cpa = default_erp->refers->irb.scsw.cmd.cpa;
1644
1645 if (cpa == 0) {
1646 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1647 "Unable to determine address of the CCW "
1648 "to be restarted");
1649
1650 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1651 }
1652
1653
1654 erp = dasd_alloc_erp_request((char *) &cqr->magic,
1655 2 + 1,
1656 sizeof(struct DE_eckd_data) +
1657 sizeof(struct LO_eckd_data), device);
1658
1659 if (IS_ERR(erp)) {
1660
1661 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1662 "device driver, reason=%s\n", "01");
1663 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1664 }
1665
1666
1667 DE_data = erp->data;
1668 oldccw = cqr->cpaddr;
1669 if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) {
1670 PFX_data = cqr->data;
1671 memcpy(DE_data, &PFX_data->define_extent,
1672 sizeof(struct DE_eckd_data));
1673 } else
1674 memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data));
1675
1676
1677 LO_data = erp->data + sizeof(struct DE_eckd_data);
1678
1679 if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
1680
1681 return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
1682 }
1683
1684 if ((sense[7] & 0x3F) == 0x01) {
1685
1686 LO_data[0] = 0x81;
1687
1688 } else if ((sense[7] & 0x3F) == 0x03) {
1689
1690 LO_data[0] = 0xC3;
1691
1692 } else {
1693 LO_data[0] = sense[7];
1694 }
1695
1696 LO_data[1] = sense[8];
1697 LO_data[2] = sense[9];
1698 LO_data[3] = sense[3];
1699 LO_data[4] = sense[29];
1700 LO_data[5] = sense[30];
1701 LO_data[7] = sense[31];
1702
1703 memcpy(&(LO_data[8]), &(sense[11]), 8);
1704
1705
1706 ccw = erp->cpaddr;
1707 memset(ccw, 0, sizeof(struct ccw1));
1708 ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT;
1709 ccw->flags = CCW_FLAG_CC;
1710 ccw->count = 16;
1711 ccw->cda = (__u32)(addr_t) DE_data;
1712
1713
1714 ccw++;
1715 memset(ccw, 0, sizeof(struct ccw1));
1716 ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD;
1717 ccw->flags = CCW_FLAG_CC;
1718 ccw->count = 16;
1719 ccw->cda = (__u32)(addr_t) LO_data;
1720
1721
1722 ccw++;
1723 ccw->cmd_code = CCW_CMD_TIC;
1724 ccw->cda = cpa;
1725
1726
1727 erp->flags = default_erp->flags;
1728 erp->function = dasd_3990_erp_action_1B_32;
1729 erp->refers = default_erp->refers;
1730 erp->startdev = device;
1731 erp->memdev = device;
1732 erp->magic = default_erp->magic;
1733 erp->expires = default_erp->expires;
1734 erp->retries = 256;
1735 erp->buildclk = get_tod_clock();
1736 erp->status = DASD_CQR_FILLED;
1737
1738
1739 dasd_free_erp_request(default_erp, device);
1740
1741 return erp;
1742
1743}
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760static struct dasd_ccw_req *
1761dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
1762{
1763
1764 struct dasd_device *device = previous_erp->startdev;
1765 __u32 cpa = 0;
1766 struct dasd_ccw_req *cqr;
1767 struct dasd_ccw_req *erp;
1768 char *LO_data;
1769 struct ccw1 *ccw;
1770
1771 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1772 "Write not finished because of unexpected condition"
1773 " - follow on");
1774
1775
1776 cqr = previous_erp;
1777
1778 while (cqr->refers != NULL) {
1779 cqr = cqr->refers;
1780 }
1781
1782 if (scsw_is_tm(&cqr->irb.scsw)) {
1783 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1784 "32 bit sense, action 1B, update,"
1785 " in transport mode - just retry");
1786 return previous_erp;
1787 }
1788
1789
1790 if (sense[1] & 0x01) {
1791 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1792 "Imprecise ending is set - just retry");
1793
1794 previous_erp->status = DASD_CQR_FILLED;
1795
1796 return previous_erp;
1797 }
1798
1799
1800
1801 cpa = previous_erp->irb.scsw.cmd.cpa;
1802
1803 if (cpa == 0) {
1804
1805
1806 dev_err(&device->cdev->dev, "An error occurred in the DASD "
1807 "device driver, reason=%s\n", "02");
1808
1809 previous_erp->status = DASD_CQR_FAILED;
1810
1811 return previous_erp;
1812 }
1813
1814 erp = previous_erp;
1815
1816
1817 LO_data = erp->data + sizeof(struct DE_eckd_data);
1818
1819 if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
1820
1821 previous_erp->status = DASD_CQR_FAILED;
1822
1823 return previous_erp;
1824 }
1825
1826 if ((sense[7] & 0x3F) == 0x01) {
1827
1828 LO_data[0] = 0x81;
1829
1830 } else if ((sense[7] & 0x3F) == 0x03) {
1831
1832 LO_data[0] = 0xC3;
1833
1834 } else {
1835 LO_data[0] = sense[7];
1836 }
1837
1838 LO_data[1] = sense[8];
1839 LO_data[2] = sense[9];
1840 LO_data[3] = sense[3];
1841 LO_data[4] = sense[29];
1842 LO_data[5] = sense[30];
1843 LO_data[7] = sense[31];
1844
1845 memcpy(&(LO_data[8]), &(sense[11]), 8);
1846
1847
1848 ccw = erp->cpaddr;
1849 ccw++;
1850 ccw++;
1851 ccw->cda = cpa;
1852
1853 erp->status = DASD_CQR_FILLED;
1854
1855 return erp;
1856
1857}
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876static void
1877dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense)
1878{
1879
1880 switch (sense[25] & 0x03) {
1881 case 0x00:
1882 erp->retries = 1;
1883 break;
1884
1885 case 0x01:
1886 erp->retries = 2;
1887 break;
1888
1889 case 0x02:
1890 erp->retries = 10;
1891 break;
1892
1893 case 0x03:
1894 erp->retries = 256;
1895 break;
1896
1897 default:
1898 BUG();
1899 }
1900
1901 erp->function = dasd_3990_erp_compound_retry;
1902
1903}
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920static void
1921dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense)
1922{
1923 if (sense[25] & DASD_SENSE_BIT_3) {
1924 dasd_3990_erp_alternate_path(erp);
1925
1926 if (erp->status == DASD_CQR_FAILED &&
1927 !test_bit(DASD_CQR_VERIFY_PATH, &erp->flags)) {
1928
1929
1930 erp->lpm = dasd_path_get_opm(erp->startdev);
1931 erp->status = DASD_CQR_NEED_ERP;
1932 }
1933 }
1934
1935 erp->function = dasd_3990_erp_compound_path;
1936
1937}
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953static struct dasd_ccw_req *
1954dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense)
1955{
1956
1957 if (sense[25] & DASD_SENSE_BIT_2) {
1958
1959 switch (sense[28]) {
1960 case 0x17:
1961
1962
1963 erp = dasd_3990_erp_DCTL(erp, 0x20);
1964 break;
1965
1966 case 0x25:
1967
1968 erp->retries = 1;
1969
1970 dasd_3990_erp_block_queue (erp, 5*HZ);
1971 break;
1972
1973 default:
1974
1975 break;
1976 }
1977 }
1978
1979 erp->function = dasd_3990_erp_compound_code;
1980
1981 return erp;
1982
1983}
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001static void
2002dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense)
2003{
2004
2005 if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) {
2006
2007
2008
2009
2010 struct dasd_device *device = erp->startdev;
2011 dev_err(&device->cdev->dev,
2012 "An error occurred in the DASD device driver, "
2013 "reason=%s\n", "05");
2014
2015 }
2016
2017 erp->function = dasd_3990_erp_compound_config;
2018
2019}
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036static struct dasd_ccw_req *
2037dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense)
2038{
2039
2040 if ((erp->function == dasd_3990_erp_compound_retry) &&
2041 (erp->status == DASD_CQR_NEED_ERP)) {
2042
2043 dasd_3990_erp_compound_path(erp, sense);
2044 }
2045
2046 if ((erp->function == dasd_3990_erp_compound_path) &&
2047 (erp->status == DASD_CQR_NEED_ERP)) {
2048
2049 erp = dasd_3990_erp_compound_code(erp, sense);
2050 }
2051
2052 if ((erp->function == dasd_3990_erp_compound_code) &&
2053 (erp->status == DASD_CQR_NEED_ERP)) {
2054
2055 dasd_3990_erp_compound_config(erp, sense);
2056 }
2057
2058
2059 if (erp->status == DASD_CQR_NEED_ERP)
2060 erp->status = DASD_CQR_FAILED;
2061
2062 return erp;
2063
2064}
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078void
2079dasd_3990_erp_handle_sim(struct dasd_device *device, char *sense)
2080{
2081
2082 if ((sense[24] & DASD_SIM_MSG_TO_OP) || (sense[1] & 0x10)) {
2083
2084 dev_err(&device->cdev->dev, "SIM - SRC: "
2085 "%02x%02x%02x%02x\n", sense[22],
2086 sense[23], sense[11], sense[12]);
2087 } else if (sense[24] & DASD_SIM_LOG) {
2088
2089 dev_warn(&device->cdev->dev, "log SIM - SRC: "
2090 "%02x%02x%02x%02x\n", sense[22],
2091 sense[23], sense[11], sense[12]);
2092 }
2093}
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110static struct dasd_ccw_req *
2111dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
2112{
2113
2114 struct dasd_device *device = erp->startdev;
2115
2116 erp->function = dasd_3990_erp_inspect_32;
2117
2118
2119 if ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)
2120 dasd_3990_erp_handle_sim(device, sense);
2121
2122 if (sense[25] & DASD_SENSE_BIT_0) {
2123
2124
2125 dasd_3990_erp_compound_retry(erp, sense);
2126
2127 } else {
2128
2129
2130 switch (sense[25]) {
2131
2132 case 0x00:
2133 DBF_DEV_EVENT(DBF_DEBUG, device, "%s",
2134 "ERP called for successful request"
2135 " - just retry");
2136 break;
2137
2138 case 0x01:
2139 dev_err(&device->cdev->dev,
2140 "ERP failed for the DASD\n");
2141
2142 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2143 break;
2144
2145 case 0x02:
2146 case 0x03:
2147 erp = dasd_3990_erp_int_req(erp);
2148 break;
2149
2150 case 0x0F:
2151
2152 dev_err(&device->cdev->dev, "An error occurred in the "
2153 "DASD device driver, reason=%s\n", "08");
2154
2155 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2156 break;
2157
2158 case 0x10:
2159 erp = dasd_3990_erp_action_10_32(erp, sense);
2160 break;
2161
2162 case 0x15:
2163
2164
2165 dev_err(&device->cdev->dev,
2166 "An error occurred in the DASD device driver, "
2167 "reason=%s\n", "07");
2168
2169 erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
2170 break;
2171
2172 case 0x1B:
2173
2174 erp = dasd_3990_erp_action_1B_32(erp, sense);
2175 break;
2176
2177 case 0x1C:
2178 dev_emerg(&device->cdev->dev,
2179 "Data recovered during retry with PCI "
2180 "fetch mode active\n");
2181
2182
2183 panic
2184 ("Invalid data - No way to inform application "
2185 "about the possibly incorrect data");
2186 break;
2187
2188 case 0x1D:
2189 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2190 "A State change pending condition exists "
2191 "for the subsystem or device");
2192
2193 erp = dasd_3990_erp_action_4(erp, sense);
2194 break;
2195
2196 case 0x1E:
2197 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2198 "Busy condition exists "
2199 "for the subsystem or device");
2200 erp = dasd_3990_erp_action_4(erp, sense);
2201 break;
2202
2203 default:
2204 break;
2205 }
2206 }
2207
2208 return erp;
2209
2210}
2211
2212static void dasd_3990_erp_disable_path(struct dasd_device *device, __u8 lpum)
2213{
2214 int pos = pathmask_to_pos(lpum);
2215
2216
2217 if (!(dasd_path_get_opm(device) & ~lpum))
2218 return;
2219
2220 dev_err(&device->cdev->dev,
2221 "Path %x.%02x (pathmask %02x) is disabled - IFCC threshold exceeded\n",
2222 device->path[pos].cssid, device->path[pos].chpid, lpum);
2223 dasd_path_remove_opm(device, lpum);
2224 dasd_path_add_ifccpm(device, lpum);
2225 device->path[pos].errorclk = 0;
2226 atomic_set(&device->path[pos].error_count, 0);
2227}
2228
2229static void dasd_3990_erp_account_error(struct dasd_ccw_req *erp)
2230{
2231 struct dasd_device *device = erp->startdev;
2232 __u8 lpum = erp->refers->irb.esw.esw1.lpum;
2233 int pos = pathmask_to_pos(lpum);
2234 unsigned long long clk;
2235
2236 if (!device->path_thrhld)
2237 return;
2238
2239 clk = get_tod_clock();
2240
2241
2242
2243
2244 if ((tod_to_ns(clk - device->path[pos].errorclk) / NSEC_PER_SEC)
2245 >= device->path_interval) {
2246 atomic_set(&device->path[pos].error_count, 0);
2247 device->path[pos].errorclk = 0;
2248 }
2249 atomic_inc(&device->path[pos].error_count);
2250 device->path[pos].errorclk = clk;
2251
2252 if (atomic_read(&device->path[pos].error_count) >=
2253 device->path_thrhld)
2254 dasd_3990_erp_disable_path(device, lpum);
2255}
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277static struct dasd_ccw_req *
2278dasd_3990_erp_control_check(struct dasd_ccw_req *erp)
2279{
2280 struct dasd_device *device = erp->startdev;
2281
2282 if (scsw_cstat(&erp->refers->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK
2283 | SCHN_STAT_CHN_CTRL_CHK)) {
2284 DBF_DEV_EVENT(DBF_WARNING, device, "%s",
2285 "channel or interface control check");
2286 dasd_3990_erp_account_error(erp);
2287 erp = dasd_3990_erp_action_4(erp, NULL);
2288 }
2289 return erp;
2290}
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304static struct dasd_ccw_req *
2305dasd_3990_erp_inspect(struct dasd_ccw_req *erp)
2306{
2307
2308 struct dasd_ccw_req *erp_new = NULL;
2309 char *sense;
2310
2311
2312 erp_new = dasd_3990_erp_inspect_alias(erp);
2313 if (erp_new)
2314 return erp_new;
2315
2316
2317
2318
2319
2320 sense = dasd_get_sense(&erp->refers->irb);
2321 if (!sense)
2322 erp_new = dasd_3990_erp_control_check(erp);
2323
2324 else if (sense[27] & DASD_SENSE_BIT_0) {
2325
2326
2327 erp_new = dasd_3990_erp_inspect_24(erp, sense);
2328
2329 } else {
2330
2331
2332 erp_new = dasd_3990_erp_inspect_32(erp, sense);
2333
2334 }
2335
2336 return erp_new;
2337}
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
2358{
2359
2360 struct dasd_device *device = cqr->startdev;
2361 struct ccw1 *ccw;
2362 struct dasd_ccw_req *erp;
2363 int cplength, datasize;
2364 struct tcw *tcw;
2365 struct tsb *tsb;
2366
2367 if (cqr->cpmode == 1) {
2368 cplength = 0;
2369
2370 datasize = 64 + sizeof(struct tcw) + sizeof(struct tsb);
2371 } else {
2372 cplength = 2;
2373 datasize = 0;
2374 }
2375
2376
2377 erp = dasd_alloc_erp_request((char *) &cqr->magic,
2378 cplength, datasize, device);
2379 if (IS_ERR(erp)) {
2380 if (cqr->retries <= 0) {
2381 DBF_DEV_EVENT(DBF_ERR, device, "%s",
2382 "Unable to allocate ERP request");
2383 cqr->status = DASD_CQR_FAILED;
2384 cqr->stopclk = get_tod_clock();
2385 } else {
2386 DBF_DEV_EVENT(DBF_ERR, device,
2387 "Unable to allocate ERP request "
2388 "(%i retries left)",
2389 cqr->retries);
2390 dasd_block_set_timer(device->block, (HZ << 3));
2391 }
2392 return erp;
2393 }
2394
2395 ccw = cqr->cpaddr;
2396 if (cqr->cpmode == 1) {
2397
2398 erp->cpmode = 1;
2399 erp->cpaddr = PTR_ALIGN(erp->data, 64);
2400 tcw = erp->cpaddr;
2401 tsb = (struct tsb *) &tcw[1];
2402 *tcw = *((struct tcw *)cqr->cpaddr);
2403 tcw->tsb = (long)tsb;
2404 } else if (ccw->cmd_code == DASD_ECKD_CCW_PSF) {
2405
2406 erp->cpaddr = cqr->cpaddr;
2407 } else {
2408
2409 ccw = erp->cpaddr;
2410 ccw->cmd_code = CCW_CMD_NOOP;
2411 ccw->flags = CCW_FLAG_CC;
2412 ccw++;
2413 ccw->cmd_code = CCW_CMD_TIC;
2414 ccw->cda = (long)(cqr->cpaddr);
2415 }
2416
2417 erp->flags = cqr->flags;
2418 erp->function = dasd_3990_erp_add_erp;
2419 erp->refers = cqr;
2420 erp->startdev = device;
2421 erp->memdev = device;
2422 erp->block = cqr->block;
2423 erp->magic = cqr->magic;
2424 erp->expires = cqr->expires;
2425 erp->retries = 256;
2426 erp->buildclk = get_tod_clock();
2427 erp->status = DASD_CQR_FILLED;
2428
2429 return erp;
2430}
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447static struct dasd_ccw_req *
2448dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr)
2449{
2450
2451 struct dasd_ccw_req *erp = NULL;
2452
2453
2454 erp = dasd_3990_erp_add_erp(cqr);
2455
2456 if (IS_ERR(erp))
2457 return erp;
2458
2459
2460 if (erp != cqr) {
2461
2462 erp = dasd_3990_erp_inspect(erp);
2463 }
2464
2465 return erp;
2466
2467}
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487static int dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1,
2488 struct dasd_ccw_req *cqr2)
2489{
2490 char *sense1, *sense2;
2491
2492 if (cqr1->startdev != cqr2->startdev)
2493 return 0;
2494
2495 sense1 = dasd_get_sense(&cqr1->irb);
2496 sense2 = dasd_get_sense(&cqr2->irb);
2497
2498
2499 if (!sense1 != !sense2)
2500 return 0;
2501
2502 if (!sense1 && !sense2) {
2503 if ((scsw_cstat(&cqr1->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
2504 SCHN_STAT_CHN_CTRL_CHK)) ==
2505 (scsw_cstat(&cqr2->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
2506 SCHN_STAT_CHN_CTRL_CHK)))
2507 return 1;
2508 }
2509
2510 if (!(sense1 && sense2 &&
2511 (memcmp(sense1, sense2, 3) == 0) &&
2512 (sense1[27] == sense2[27]) &&
2513 (sense1[25] == sense2[25]))) {
2514
2515 return 0;
2516 }
2517
2518 return 1;
2519
2520}
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537static struct dasd_ccw_req *
2538dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr)
2539{
2540
2541 struct dasd_ccw_req *erp_head = cqr,
2542 *erp_match = NULL;
2543 int match = 0;
2544
2545 if (cqr->refers == NULL) {
2546 return NULL;
2547 }
2548
2549
2550 do {
2551 match = dasd_3990_erp_error_match(erp_head, cqr->refers);
2552 erp_match = cqr;
2553 cqr = cqr->refers;
2554
2555 } while ((cqr->refers != NULL) && (!match));
2556
2557 if (!match) {
2558 return NULL;
2559 }
2560
2561 return erp_match;
2562
2563}
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581static struct dasd_ccw_req *
2582dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
2583{
2584
2585 struct dasd_device *device = erp->startdev;
2586 char *sense = dasd_get_sense(&erp->irb);
2587
2588
2589 if ((erp->function == dasd_3990_erp_bus_out) ||
2590 (erp->function == dasd_3990_erp_action_1) ||
2591 (erp->function == dasd_3990_erp_action_4)) {
2592
2593 erp = dasd_3990_erp_action_1(erp);
2594
2595 } else if (erp->function == dasd_3990_erp_action_1_sec) {
2596 erp = dasd_3990_erp_action_1_sec(erp);
2597 } else if (erp->function == dasd_3990_erp_action_5) {
2598
2599
2600
2601 erp = dasd_3990_erp_action_1(erp);
2602
2603 if (sense && !(sense[2] & DASD_SENSE_BIT_0)) {
2604
2605
2606
2607
2608 switch (sense[25]) {
2609 case 0x17:
2610 case 0x57:{
2611 erp = dasd_3990_erp_DCTL(erp, 0x20);
2612 break;
2613 }
2614 case 0x18:
2615 case 0x58:{
2616 erp = dasd_3990_erp_DCTL(erp, 0x40);
2617 break;
2618 }
2619 case 0x19:
2620 case 0x59:{
2621 erp = dasd_3990_erp_DCTL(erp, 0x80);
2622 break;
2623 }
2624 default:
2625 DBF_DEV_EVENT(DBF_WARNING, device,
2626 "invalid subcommand modifier 0x%x "
2627 "for Diagnostic Control Command",
2628 sense[25]);
2629 }
2630 }
2631
2632
2633 } else if (sense &&
2634 ((erp->function == dasd_3990_erp_compound_retry) ||
2635 (erp->function == dasd_3990_erp_compound_path) ||
2636 (erp->function == dasd_3990_erp_compound_code) ||
2637 (erp->function == dasd_3990_erp_compound_config))) {
2638
2639 erp = dasd_3990_erp_compound(erp, sense);
2640
2641 } else {
2642
2643
2644
2645
2646 dev_err(&device->cdev->dev,
2647 "ERP %p has run out of retries and failed\n", erp);
2648
2649 erp->status = DASD_CQR_FAILED;
2650 }
2651
2652 return erp;
2653
2654}
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675static struct dasd_ccw_req *
2676dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
2677 struct dasd_ccw_req *erp)
2678{
2679
2680 struct dasd_device *device = erp_head->startdev;
2681 struct dasd_ccw_req *erp_done = erp_head;
2682 struct dasd_ccw_req *erp_free = NULL;
2683
2684
2685 while (erp_done != erp) {
2686
2687 if (erp_done == NULL)
2688 panic(PRINTK_HEADER "Programming error in ERP! The "
2689 "original request was lost\n");
2690
2691
2692 list_del(&erp_done->blocklist);
2693
2694 erp_free = erp_done;
2695 erp_done = erp_done->refers;
2696
2697
2698 dasd_free_erp_request(erp_free, erp_free->memdev);
2699
2700 }
2701
2702 if (erp->retries > 0) {
2703
2704 char *sense = dasd_get_sense(&erp->refers->irb);
2705
2706
2707 if (sense && erp->function == dasd_3990_erp_action_4) {
2708
2709 erp = dasd_3990_erp_action_4(erp, sense);
2710
2711 } else if (sense &&
2712 erp->function == dasd_3990_erp_action_1B_32) {
2713
2714 erp = dasd_3990_update_1B(erp, sense);
2715
2716 } else if (sense && erp->function == dasd_3990_erp_int_req) {
2717
2718 erp = dasd_3990_erp_int_req(erp);
2719
2720 } else {
2721
2722 DBF_DEV_EVENT(DBF_DEBUG, device,
2723 "%i retries left for erp %p",
2724 erp->retries, erp);
2725
2726
2727 erp->status = DASD_CQR_FILLED;
2728 }
2729
2730 } else {
2731
2732
2733 erp = dasd_3990_erp_further_erp(erp);
2734 }
2735
2736 return erp;
2737
2738}
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757struct dasd_ccw_req *
2758dasd_3990_erp_action(struct dasd_ccw_req * cqr)
2759{
2760 struct dasd_ccw_req *erp = NULL;
2761 struct dasd_device *device = cqr->startdev;
2762 struct dasd_ccw_req *temp_erp = NULL;
2763
2764 if (device->features & DASD_FEATURE_ERPLOG) {
2765
2766 dev_err(&device->cdev->dev,
2767 "ERP chain at BEGINNING of ERP-ACTION\n");
2768 for (temp_erp = cqr;
2769 temp_erp != NULL; temp_erp = temp_erp->refers) {
2770
2771 dev_err(&device->cdev->dev,
2772 "ERP %p (%02x) refers to %p\n",
2773 temp_erp, temp_erp->status,
2774 temp_erp->refers);
2775 }
2776 }
2777
2778
2779 if ((scsw_cstat(&cqr->irb.scsw) == 0x00) &&
2780 (scsw_dstat(&cqr->irb.scsw) ==
2781 (DEV_STAT_CHN_END | DEV_STAT_DEV_END))) {
2782
2783 DBF_DEV_EVENT(DBF_DEBUG, device,
2784 "ERP called for successful request %p"
2785 " - NO ERP necessary", cqr);
2786
2787 cqr->status = DASD_CQR_DONE;
2788
2789 return cqr;
2790 }
2791
2792
2793 erp = dasd_3990_erp_in_erp(cqr);
2794
2795 if (erp == NULL) {
2796
2797 erp = dasd_3990_erp_additional_erp(cqr);
2798 if (IS_ERR(erp))
2799 return erp;
2800 } else {
2801
2802 erp = dasd_3990_erp_handle_match_erp(cqr, erp);
2803 }
2804
2805 if (device->features & DASD_FEATURE_ERPLOG) {
2806
2807 dev_err(&device->cdev->dev,
2808 "ERP chain at END of ERP-ACTION\n");
2809 for (temp_erp = erp;
2810 temp_erp != NULL; temp_erp = temp_erp->refers) {
2811
2812 dev_err(&device->cdev->dev,
2813 "ERP %p (%02x) refers to %p\n",
2814 temp_erp, temp_erp->status,
2815 temp_erp->refers);
2816 }
2817 }
2818
2819
2820 if (list_empty(&erp->blocklist)) {
2821 cqr->status = DASD_CQR_IN_ERP;
2822
2823 list_add_tail(&erp->blocklist, &cqr->blocklist);
2824 }
2825
2826
2827
2828 return erp;
2829
2830}
2831