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10#include <linux/scatterlist.h>
11#include <linux/slab.h>
12#include <linux/async.h>
13#include <linux/export.h>
14
15#include <scsi/sas_ata.h>
16#include "sas_internal.h"
17#include <scsi/scsi_host.h>
18#include <scsi/scsi_device.h>
19#include <scsi/scsi_tcq.h>
20#include <scsi/scsi.h>
21#include <scsi/scsi_transport.h>
22#include <scsi/scsi_transport_sas.h>
23#include "../scsi_sas_internal.h"
24#include "../scsi_transport_api.h"
25#include <scsi/scsi_eh.h>
26
27static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
28{
29
30
31
32 if (ts->resp == SAS_TASK_UNDELIVERED)
33 return AC_ERR_ATA_BUS;
34
35
36
37 switch (ts->stat) {
38 case SAS_DEV_NO_RESPONSE:
39 return AC_ERR_TIMEOUT;
40
41 case SAS_INTERRUPTED:
42 case SAS_PHY_DOWN:
43 case SAS_NAK_R_ERR:
44 return AC_ERR_ATA_BUS;
45
46
47 case SAS_DATA_UNDERRUN:
48
49
50
51
52
53
54 return 0;
55
56 case SAS_DATA_OVERRUN:
57 case SAS_QUEUE_FULL:
58 case SAS_DEVICE_UNKNOWN:
59 case SAS_SG_ERR:
60 return AC_ERR_INVALID;
61
62 case SAS_OPEN_TO:
63 case SAS_OPEN_REJECT:
64 pr_warn("%s: Saw error %d. What to do?\n",
65 __func__, ts->stat);
66 return AC_ERR_OTHER;
67
68 case SAM_STAT_CHECK_CONDITION:
69 case SAS_ABORTED_TASK:
70 return AC_ERR_DEV;
71
72 case SAS_PROTO_RESPONSE:
73
74
75 return 0;
76 default:
77 return 0;
78 }
79}
80
81static void sas_ata_task_done(struct sas_task *task)
82{
83 struct ata_queued_cmd *qc = task->uldd_task;
84 struct domain_device *dev = task->dev;
85 struct task_status_struct *stat = &task->task_status;
86 struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
87 struct sas_ha_struct *sas_ha = dev->port->ha;
88 enum ata_completion_errors ac;
89 unsigned long flags;
90 struct ata_link *link;
91 struct ata_port *ap;
92
93 spin_lock_irqsave(&dev->done_lock, flags);
94 if (test_bit(SAS_HA_FROZEN, &sas_ha->state))
95 task = NULL;
96 else if (qc && qc->scsicmd)
97 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
98 spin_unlock_irqrestore(&dev->done_lock, flags);
99
100
101 if (unlikely(!task))
102 return;
103
104 if (!qc)
105 goto qc_already_gone;
106
107 ap = qc->ap;
108 link = &ap->link;
109
110 spin_lock_irqsave(ap->lock, flags);
111
112 if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) {
113 spin_unlock_irqrestore(ap->lock, flags);
114 if (qc->scsicmd)
115 goto qc_already_gone;
116 else {
117
118
119
120
121 return;
122 }
123 }
124
125 if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD ||
126 ((stat->stat == SAM_STAT_CHECK_CONDITION &&
127 dev->sata_dev.class == ATA_DEV_ATAPI))) {
128 memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
129
130 if (!link->sactive) {
131 qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
132 } else {
133 link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
134 if (unlikely(link->eh_info.err_mask))
135 qc->flags |= ATA_QCFLAG_FAILED;
136 }
137 } else {
138 ac = sas_to_ata_err(stat);
139 if (ac) {
140 pr_warn("%s: SAS error 0x%x\n", __func__, stat->stat);
141
142 if (!link->sactive) {
143 qc->err_mask = ac;
144 } else {
145 link->eh_info.err_mask |= AC_ERR_DEV;
146 qc->flags |= ATA_QCFLAG_FAILED;
147 }
148
149 dev->sata_dev.fis[3] = 0x04;
150 dev->sata_dev.fis[2] = ATA_ERR;
151 }
152 }
153
154 qc->lldd_task = NULL;
155 ata_qc_complete(qc);
156 spin_unlock_irqrestore(ap->lock, flags);
157
158qc_already_gone:
159 sas_free_task(task);
160}
161
162static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
163 __must_hold(ap->lock)
164{
165 struct sas_task *task;
166 struct scatterlist *sg;
167 int ret = AC_ERR_SYSTEM;
168 unsigned int si, xfer = 0;
169 struct ata_port *ap = qc->ap;
170 struct domain_device *dev = ap->private_data;
171 struct sas_ha_struct *sas_ha = dev->port->ha;
172 struct Scsi_Host *host = sas_ha->core.shost;
173 struct sas_internal *i = to_sas_internal(host->transportt);
174
175
176 spin_unlock(ap->lock);
177
178
179 if (test_bit(SAS_DEV_GONE, &dev->state))
180 goto out;
181
182 task = sas_alloc_task(GFP_ATOMIC);
183 if (!task)
184 goto out;
185 task->dev = dev;
186 task->task_proto = SAS_PROTOCOL_STP;
187 task->task_done = sas_ata_task_done;
188
189 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
190 qc->tf.command == ATA_CMD_FPDMA_READ ||
191 qc->tf.command == ATA_CMD_FPDMA_RECV ||
192 qc->tf.command == ATA_CMD_FPDMA_SEND ||
193 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
194
195 qc->tf.nsect = 0;
196 }
197
198 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
199 task->uldd_task = qc;
200 if (ata_is_atapi(qc->tf.protocol)) {
201 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
202 task->total_xfer_len = qc->nbytes;
203 task->num_scatter = qc->n_elem;
204 task->data_dir = qc->dma_dir;
205 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
206 task->data_dir = DMA_NONE;
207 } else {
208 for_each_sg(qc->sg, sg, qc->n_elem, si)
209 xfer += sg_dma_len(sg);
210
211 task->total_xfer_len = xfer;
212 task->num_scatter = si;
213 task->data_dir = qc->dma_dir;
214 }
215 task->scatter = qc->sg;
216 task->ata_task.retry_count = 1;
217 task->task_state_flags = SAS_TASK_STATE_PENDING;
218 qc->lldd_task = task;
219
220 task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol);
221 task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol);
222
223 if (qc->scsicmd)
224 ASSIGN_SAS_TASK(qc->scsicmd, task);
225
226 ret = i->dft->lldd_execute_task(task, GFP_ATOMIC);
227 if (ret) {
228 pr_debug("lldd_execute_task returned: %d\n", ret);
229
230 if (qc->scsicmd)
231 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
232 sas_free_task(task);
233 qc->lldd_task = NULL;
234 ret = AC_ERR_SYSTEM;
235 }
236
237 out:
238 spin_lock(ap->lock);
239 return ret;
240}
241
242static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
243{
244 struct domain_device *dev = qc->ap->private_data;
245
246 ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
247 return true;
248}
249
250static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
251{
252 return to_sas_internal(dev->port->ha->core.shost->transportt);
253}
254
255static int sas_get_ata_command_set(struct domain_device *dev);
256
257int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
258{
259 if (phy->attached_tproto & SAS_PROTOCOL_STP)
260 dev->tproto = phy->attached_tproto;
261 if (phy->attached_sata_dev)
262 dev->tproto |= SAS_SATA_DEV;
263
264 if (phy->attached_dev_type == SAS_SATA_PENDING)
265 dev->dev_type = SAS_SATA_PENDING;
266 else {
267 int res;
268
269 dev->dev_type = SAS_SATA_DEV;
270 res = sas_get_report_phy_sata(dev->parent, phy->phy_id,
271 &dev->sata_dev.rps_resp);
272 if (res) {
273 pr_debug("report phy sata to %016llx:%02d returned 0x%x\n",
274 SAS_ADDR(dev->parent->sas_addr),
275 phy->phy_id, res);
276 return res;
277 }
278 memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
279 sizeof(struct dev_to_host_fis));
280 dev->sata_dev.class = sas_get_ata_command_set(dev);
281 }
282 return 0;
283}
284
285static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
286{
287 int res;
288
289
290 if (dev->dev_type != SAS_SATA_PENDING)
291 return 1;
292
293
294
295
296 res = sas_get_ata_info(dev, phy);
297 if (res)
298 return 0;
299 else
300 return 1;
301}
302
303static int smp_ata_check_ready(struct ata_link *link)
304{
305 int res;
306 struct ata_port *ap = link->ap;
307 struct domain_device *dev = ap->private_data;
308 struct domain_device *ex_dev = dev->parent;
309 struct sas_phy *phy = sas_get_local_phy(dev);
310 struct ex_phy *ex_phy = &ex_dev->ex_dev.ex_phy[phy->number];
311
312 res = sas_ex_phy_discover(ex_dev, phy->number);
313 sas_put_local_phy(phy);
314
315
316
317
318 if (res == -ECOMM)
319 return res;
320 if (res != SMP_RESP_FUNC_ACC)
321 return 0;
322
323 switch (ex_phy->attached_dev_type) {
324 case SAS_SATA_PENDING:
325 return 0;
326 case SAS_END_DEVICE:
327 if (ex_phy->attached_sata_dev)
328 return sas_ata_clear_pending(dev, ex_phy);
329 fallthrough;
330 default:
331 return -ENODEV;
332 }
333}
334
335static int local_ata_check_ready(struct ata_link *link)
336{
337 struct ata_port *ap = link->ap;
338 struct domain_device *dev = ap->private_data;
339 struct sas_internal *i = dev_to_sas_internal(dev);
340
341 if (i->dft->lldd_ata_check_ready)
342 return i->dft->lldd_ata_check_ready(dev);
343 else {
344
345
346
347
348 return 1;
349 }
350}
351
352static int sas_ata_printk(const char *level, const struct domain_device *ddev,
353 const char *fmt, ...)
354{
355 struct ata_port *ap = ddev->sata_dev.ap;
356 struct device *dev = &ddev->rphy->dev;
357 struct va_format vaf;
358 va_list args;
359 int r;
360
361 va_start(args, fmt);
362
363 vaf.fmt = fmt;
364 vaf.va = &args;
365
366 r = printk("%s" SAS_FMT "ata%u: %s: %pV",
367 level, ap->print_id, dev_name(dev), &vaf);
368
369 va_end(args);
370
371 return r;
372}
373
374static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
375 unsigned long deadline)
376{
377 int ret = 0, res;
378 struct sas_phy *phy;
379 struct ata_port *ap = link->ap;
380 int (*check_ready)(struct ata_link *link);
381 struct domain_device *dev = ap->private_data;
382 struct sas_internal *i = dev_to_sas_internal(dev);
383
384 res = i->dft->lldd_I_T_nexus_reset(dev);
385 if (res == -ENODEV)
386 return res;
387
388 if (res != TMF_RESP_FUNC_COMPLETE)
389 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
390
391 phy = sas_get_local_phy(dev);
392 if (scsi_is_sas_phy_local(phy))
393 check_ready = local_ata_check_ready;
394 else
395 check_ready = smp_ata_check_ready;
396 sas_put_local_phy(phy);
397
398 ret = ata_wait_after_reset(link, deadline, check_ready);
399 if (ret && ret != -EAGAIN)
400 sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
401
402 *class = dev->sata_dev.class;
403
404 ap->cbl = ATA_CBL_SATA;
405 return ret;
406}
407
408
409
410
411
412static void sas_ata_internal_abort(struct sas_task *task)
413{
414 struct sas_internal *si = dev_to_sas_internal(task->dev);
415 unsigned long flags;
416 int res;
417
418 spin_lock_irqsave(&task->task_state_lock, flags);
419 if (task->task_state_flags & SAS_TASK_STATE_ABORTED ||
420 task->task_state_flags & SAS_TASK_STATE_DONE) {
421 spin_unlock_irqrestore(&task->task_state_lock, flags);
422 pr_debug("%s: Task %p already finished.\n", __func__, task);
423 goto out;
424 }
425 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
426 spin_unlock_irqrestore(&task->task_state_lock, flags);
427
428 res = si->dft->lldd_abort_task(task);
429
430 spin_lock_irqsave(&task->task_state_lock, flags);
431 if (task->task_state_flags & SAS_TASK_STATE_DONE ||
432 res == TMF_RESP_FUNC_COMPLETE) {
433 spin_unlock_irqrestore(&task->task_state_lock, flags);
434 goto out;
435 }
436
437
438
439
440
441
442 pr_warn("%s: Task %p leaked.\n", __func__, task);
443
444 if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
445 task->task_state_flags &= ~SAS_TASK_STATE_ABORTED;
446 spin_unlock_irqrestore(&task->task_state_lock, flags);
447
448 return;
449 out:
450 sas_free_task(task);
451}
452
453static void sas_ata_post_internal(struct ata_queued_cmd *qc)
454{
455 if (qc->flags & ATA_QCFLAG_FAILED)
456 qc->err_mask |= AC_ERR_OTHER;
457
458 if (qc->err_mask) {
459
460
461
462
463
464
465
466
467 struct sas_task *task = qc->lldd_task;
468
469 qc->lldd_task = NULL;
470 if (!task)
471 return;
472 task->uldd_task = NULL;
473 sas_ata_internal_abort(task);
474 }
475}
476
477
478static void sas_ata_set_dmamode(struct ata_port *ap, struct ata_device *ata_dev)
479{
480 struct domain_device *dev = ap->private_data;
481 struct sas_internal *i = dev_to_sas_internal(dev);
482
483 if (i->dft->lldd_ata_set_dmamode)
484 i->dft->lldd_ata_set_dmamode(dev);
485}
486
487static void sas_ata_sched_eh(struct ata_port *ap)
488{
489 struct domain_device *dev = ap->private_data;
490 struct sas_ha_struct *ha = dev->port->ha;
491 unsigned long flags;
492
493 spin_lock_irqsave(&ha->lock, flags);
494 if (!test_and_set_bit(SAS_DEV_EH_PENDING, &dev->state))
495 ha->eh_active++;
496 ata_std_sched_eh(ap);
497 spin_unlock_irqrestore(&ha->lock, flags);
498}
499
500void sas_ata_end_eh(struct ata_port *ap)
501{
502 struct domain_device *dev = ap->private_data;
503 struct sas_ha_struct *ha = dev->port->ha;
504 unsigned long flags;
505
506 spin_lock_irqsave(&ha->lock, flags);
507 if (test_and_clear_bit(SAS_DEV_EH_PENDING, &dev->state))
508 ha->eh_active--;
509 spin_unlock_irqrestore(&ha->lock, flags);
510}
511
512static int sas_ata_prereset(struct ata_link *link, unsigned long deadline)
513{
514 struct ata_port *ap = link->ap;
515 struct domain_device *dev = ap->private_data;
516 struct sas_phy *local_phy = sas_get_local_phy(dev);
517 int res = 0;
518
519 if (!local_phy->enabled || test_bit(SAS_DEV_GONE, &dev->state))
520 res = -ENOENT;
521 sas_put_local_phy(local_phy);
522
523 return res;
524}
525
526static struct ata_port_operations sas_sata_ops = {
527 .prereset = sas_ata_prereset,
528 .hardreset = sas_ata_hard_reset,
529 .error_handler = ata_std_error_handler,
530 .post_internal_cmd = sas_ata_post_internal,
531 .qc_defer = ata_std_qc_defer,
532 .qc_prep = ata_noop_qc_prep,
533 .qc_issue = sas_ata_qc_issue,
534 .qc_fill_rtf = sas_ata_qc_fill_rtf,
535 .port_start = ata_sas_port_start,
536 .port_stop = ata_sas_port_stop,
537 .set_dmamode = sas_ata_set_dmamode,
538 .sched_eh = sas_ata_sched_eh,
539 .end_eh = sas_ata_end_eh,
540};
541
542static struct ata_port_info sata_port_info = {
543 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ |
544 ATA_FLAG_SAS_HOST | ATA_FLAG_FPDMA_AUX,
545 .pio_mask = ATA_PIO4,
546 .mwdma_mask = ATA_MWDMA2,
547 .udma_mask = ATA_UDMA6,
548 .port_ops = &sas_sata_ops
549};
550
551int sas_ata_init(struct domain_device *found_dev)
552{
553 struct sas_ha_struct *ha = found_dev->port->ha;
554 struct Scsi_Host *shost = ha->core.shost;
555 struct ata_host *ata_host;
556 struct ata_port *ap;
557 int rc;
558
559 ata_host = kzalloc(sizeof(*ata_host), GFP_KERNEL);
560 if (!ata_host) {
561 pr_err("ata host alloc failed.\n");
562 return -ENOMEM;
563 }
564
565 ata_host_init(ata_host, ha->dev, &sas_sata_ops);
566
567 ap = ata_sas_port_alloc(ata_host, &sata_port_info, shost);
568 if (!ap) {
569 pr_err("ata_sas_port_alloc failed.\n");
570 rc = -ENODEV;
571 goto free_host;
572 }
573
574 ap->private_data = found_dev;
575 ap->cbl = ATA_CBL_SATA;
576 ap->scsi_host = shost;
577 rc = ata_sas_port_init(ap);
578 if (rc)
579 goto destroy_port;
580
581 rc = ata_sas_tport_add(ata_host->dev, ap);
582 if (rc)
583 goto destroy_port;
584
585 found_dev->sata_dev.ata_host = ata_host;
586 found_dev->sata_dev.ap = ap;
587
588 return 0;
589
590destroy_port:
591 ata_sas_port_destroy(ap);
592free_host:
593 ata_host_put(ata_host);
594 return rc;
595}
596
597void sas_ata_task_abort(struct sas_task *task)
598{
599 struct ata_queued_cmd *qc = task->uldd_task;
600 struct completion *waiting;
601
602
603 if (qc->scsicmd) {
604 blk_abort_request(qc->scsicmd->request);
605 return;
606 }
607
608
609 qc->flags &= ~ATA_QCFLAG_ACTIVE;
610 qc->flags |= ATA_QCFLAG_FAILED;
611 qc->err_mask |= AC_ERR_TIMEOUT;
612 waiting = qc->private_data;
613 complete(waiting);
614}
615
616static int sas_get_ata_command_set(struct domain_device *dev)
617{
618 struct dev_to_host_fis *fis =
619 (struct dev_to_host_fis *) dev->frame_rcvd;
620 struct ata_taskfile tf;
621
622 if (dev->dev_type == SAS_SATA_PENDING)
623 return ATA_DEV_UNKNOWN;
624
625 ata_tf_from_fis((const u8 *)fis, &tf);
626
627 return ata_dev_classify(&tf);
628}
629
630void sas_probe_sata(struct asd_sas_port *port)
631{
632 struct domain_device *dev, *n;
633
634 mutex_lock(&port->ha->disco_mutex);
635 list_for_each_entry(dev, &port->disco_list, disco_list_node) {
636 if (!dev_is_sata(dev))
637 continue;
638
639 ata_sas_async_probe(dev->sata_dev.ap);
640 }
641 mutex_unlock(&port->ha->disco_mutex);
642
643 list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) {
644 if (!dev_is_sata(dev))
645 continue;
646
647 sas_ata_wait_eh(dev);
648
649
650
651
652 if (!ata_dev_enabled(sas_to_ata_dev(dev)))
653 sas_fail_probe(dev, __func__, -ENODEV);
654 }
655
656}
657
658static void sas_ata_flush_pm_eh(struct asd_sas_port *port, const char *func)
659{
660 struct domain_device *dev, *n;
661
662 list_for_each_entry_safe(dev, n, &port->dev_list, dev_list_node) {
663 if (!dev_is_sata(dev))
664 continue;
665
666 sas_ata_wait_eh(dev);
667
668
669 if (ata_dev_disabled(sas_to_ata_dev(dev)))
670 sas_fail_probe(dev, func, -ENODEV);
671 }
672}
673
674void sas_suspend_sata(struct asd_sas_port *port)
675{
676 struct domain_device *dev;
677
678 mutex_lock(&port->ha->disco_mutex);
679 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
680 struct sata_device *sata;
681
682 if (!dev_is_sata(dev))
683 continue;
684
685 sata = &dev->sata_dev;
686 if (sata->ap->pm_mesg.event == PM_EVENT_SUSPEND)
687 continue;
688
689 ata_sas_port_suspend(sata->ap);
690 }
691 mutex_unlock(&port->ha->disco_mutex);
692
693 sas_ata_flush_pm_eh(port, __func__);
694}
695
696void sas_resume_sata(struct asd_sas_port *port)
697{
698 struct domain_device *dev;
699
700 mutex_lock(&port->ha->disco_mutex);
701 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
702 struct sata_device *sata;
703
704 if (!dev_is_sata(dev))
705 continue;
706
707 sata = &dev->sata_dev;
708 if (sata->ap->pm_mesg.event == PM_EVENT_ON)
709 continue;
710
711 ata_sas_port_resume(sata->ap);
712 }
713 mutex_unlock(&port->ha->disco_mutex);
714
715 sas_ata_flush_pm_eh(port, __func__);
716}
717
718
719
720
721
722
723
724
725
726int sas_discover_sata(struct domain_device *dev)
727{
728 if (dev->dev_type == SAS_SATA_PM)
729 return -ENODEV;
730
731 dev->sata_dev.class = sas_get_ata_command_set(dev);
732 sas_fill_in_rphy(dev, dev->rphy);
733
734 return sas_notify_lldd_dev_found(dev);
735}
736
737static void async_sas_ata_eh(void *data, async_cookie_t cookie)
738{
739 struct domain_device *dev = data;
740 struct ata_port *ap = dev->sata_dev.ap;
741 struct sas_ha_struct *ha = dev->port->ha;
742
743 sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
744 ata_scsi_port_error_handler(ha->core.shost, ap);
745 sas_put_device(dev);
746}
747
748void sas_ata_strategy_handler(struct Scsi_Host *shost)
749{
750 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
751 ASYNC_DOMAIN_EXCLUSIVE(async);
752 int i;
753
754
755
756
757
758
759
760
761
762 sas_disable_revalidation(sas_ha);
763
764 spin_lock_irq(&sas_ha->phy_port_lock);
765 for (i = 0; i < sas_ha->num_phys; i++) {
766 struct asd_sas_port *port = sas_ha->sas_port[i];
767 struct domain_device *dev;
768
769 spin_lock(&port->dev_list_lock);
770 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
771 if (!dev_is_sata(dev))
772 continue;
773
774
775
776
777
778 kref_get(&dev->kref);
779
780 async_schedule_domain(async_sas_ata_eh, dev, &async);
781 }
782 spin_unlock(&port->dev_list_lock);
783 }
784 spin_unlock_irq(&sas_ha->phy_port_lock);
785
786 async_synchronize_full_domain(&async);
787
788 sas_enable_revalidation(sas_ha);
789}
790
791void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
792 struct list_head *done_q)
793{
794 struct scsi_cmnd *cmd, *n;
795 struct domain_device *eh_dev;
796
797 do {
798 LIST_HEAD(sata_q);
799 eh_dev = NULL;
800
801 list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
802 struct domain_device *ddev = cmd_to_domain_dev(cmd);
803
804 if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
805 continue;
806 if (eh_dev && eh_dev != ddev)
807 continue;
808 eh_dev = ddev;
809 list_move(&cmd->eh_entry, &sata_q);
810 }
811
812 if (!list_empty(&sata_q)) {
813 struct ata_port *ap = eh_dev->sata_dev.ap;
814
815 sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
816 ata_scsi_cmd_error_handler(shost, ap, &sata_q);
817
818
819
820
821
822
823
824
825
826
827
828 while (!list_empty(&sata_q))
829 list_del_init(sata_q.next);
830 }
831 } while (eh_dev);
832}
833
834void sas_ata_schedule_reset(struct domain_device *dev)
835{
836 struct ata_eh_info *ehi;
837 struct ata_port *ap;
838 unsigned long flags;
839
840 if (!dev_is_sata(dev))
841 return;
842
843 ap = dev->sata_dev.ap;
844 ehi = &ap->link.eh_info;
845
846 spin_lock_irqsave(ap->lock, flags);
847 ehi->err_mask |= AC_ERR_TIMEOUT;
848 ehi->action |= ATA_EH_RESET;
849 ata_port_schedule_eh(ap);
850 spin_unlock_irqrestore(ap->lock, flags);
851}
852EXPORT_SYMBOL_GPL(sas_ata_schedule_reset);
853
854void sas_ata_wait_eh(struct domain_device *dev)
855{
856 struct ata_port *ap;
857
858 if (!dev_is_sata(dev))
859 return;
860
861 ap = dev->sata_dev.ap;
862 ata_port_wait_eh(ap);
863}
864