1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Support for SATA devices on Serial Attached SCSI (SAS) controllers
5 * Copyright (C) 2006 IBM Corporation
7 * Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
10 #include <linux/scatterlist.h>
11 #include <linux/slab.h>
12 #include <linux/async.h>
13 #include <linux/export.h>
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>
27 static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
29 /* Cheesy attempt to translate SAS errors into ATA. Hah! */
32 if (ts->resp == SAS_TASK_UNDELIVERED)
33 return AC_ERR_ATA_BUS;
35 /* ts->resp == SAS_TASK_COMPLETE */
36 /* task delivered, what happened afterwards? */
38 case SAS_DEV_NO_RESPONSE:
39 return AC_ERR_TIMEOUT;
43 return AC_ERR_ATA_BUS;
44 case SAS_DATA_UNDERRUN:
46 * Some programs that use the taskfile interface
47 * (smartctl in particular) can cause underrun
48 * problems. Ignore these errors, perhaps at our
52 case SAS_DATA_OVERRUN:
54 case SAS_DEVICE_UNKNOWN:
56 return AC_ERR_INVALID;
59 pr_warn("%s: Saw error %d. What to do?\n",
62 case SAM_STAT_CHECK_CONDITION:
63 case SAS_ABORTED_TASK:
65 case SAS_PROTO_RESPONSE:
66 /* This means the ending_fis has the error
67 * value; return 0 here to collect it
75 static void sas_ata_task_done(struct sas_task *task)
77 struct ata_queued_cmd *qc = task->uldd_task;
78 struct domain_device *dev = task->dev;
79 struct task_status_struct *stat = &task->task_status;
80 struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
81 struct sas_ha_struct *sas_ha = dev->port->ha;
82 enum ata_completion_errors ac;
84 struct ata_link *link;
87 spin_lock_irqsave(&dev->done_lock, flags);
88 if (test_bit(SAS_HA_FROZEN, &sas_ha->state))
90 else if (qc && qc->scsicmd)
91 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
92 spin_unlock_irqrestore(&dev->done_lock, flags);
94 /* check if libsas-eh got to the task before us */
104 spin_lock_irqsave(ap->lock, flags);
105 /* check if we lost the race with libata/sas_ata_post_internal() */
106 if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) {
107 spin_unlock_irqrestore(ap->lock, flags);
109 goto qc_already_gone;
111 /* if eh is not involved and the port is frozen then the
112 * ata internal abort process has taken responsibility
119 if (stat->stat == SAS_PROTO_RESPONSE ||
120 stat->stat == SAS_SAM_STAT_GOOD ||
121 (stat->stat == SAS_SAM_STAT_CHECK_CONDITION &&
122 dev->sata_dev.class == ATA_DEV_ATAPI)) {
123 memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
125 if (!link->sactive) {
126 qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
128 link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
129 if (unlikely(link->eh_info.err_mask))
130 qc->flags |= ATA_QCFLAG_FAILED;
133 ac = sas_to_ata_err(stat);
135 pr_warn("%s: SAS error 0x%x\n", __func__, stat->stat);
136 /* We saw a SAS error. Send a vague error. */
137 if (!link->sactive) {
140 link->eh_info.err_mask |= AC_ERR_DEV;
141 qc->flags |= ATA_QCFLAG_FAILED;
144 dev->sata_dev.fis[3] = 0x04; /* status err */
145 dev->sata_dev.fis[2] = ATA_ERR;
149 qc->lldd_task = NULL;
151 spin_unlock_irqrestore(ap->lock, flags);
157 static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
158 __must_hold(ap->lock)
160 struct sas_task *task;
161 struct scatterlist *sg;
162 int ret = AC_ERR_SYSTEM;
163 unsigned int si, xfer = 0;
164 struct ata_port *ap = qc->ap;
165 struct domain_device *dev = ap->private_data;
166 struct sas_ha_struct *sas_ha = dev->port->ha;
167 struct Scsi_Host *host = sas_ha->core.shost;
168 struct sas_internal *i = to_sas_internal(host->transportt);
170 /* TODO: we should try to remove that unlock */
171 spin_unlock(ap->lock);
173 /* If the device fell off, no sense in issuing commands */
174 if (test_bit(SAS_DEV_GONE, &dev->state))
177 task = sas_alloc_task(GFP_ATOMIC);
181 task->task_proto = SAS_PROTOCOL_STP;
182 task->task_done = sas_ata_task_done;
184 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
185 qc->tf.command == ATA_CMD_FPDMA_READ ||
186 qc->tf.command == ATA_CMD_FPDMA_RECV ||
187 qc->tf.command == ATA_CMD_FPDMA_SEND ||
188 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
189 /* Need to zero out the tag libata assigned us */
193 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
194 task->uldd_task = qc;
195 if (ata_is_atapi(qc->tf.protocol)) {
196 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
197 task->total_xfer_len = qc->nbytes;
198 task->num_scatter = qc->n_elem;
199 task->data_dir = qc->dma_dir;
200 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
201 task->data_dir = DMA_NONE;
203 for_each_sg(qc->sg, sg, qc->n_elem, si)
204 xfer += sg_dma_len(sg);
206 task->total_xfer_len = xfer;
207 task->num_scatter = si;
208 task->data_dir = qc->dma_dir;
210 task->scatter = qc->sg;
211 task->ata_task.retry_count = 1;
212 task->task_state_flags = SAS_TASK_STATE_PENDING;
213 qc->lldd_task = task;
215 task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol);
216 task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol);
219 ASSIGN_SAS_TASK(qc->scsicmd, task);
221 ret = i->dft->lldd_execute_task(task, GFP_ATOMIC);
223 pr_debug("lldd_execute_task returned: %d\n", ret);
226 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
228 qc->lldd_task = NULL;
237 static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
239 struct domain_device *dev = qc->ap->private_data;
241 ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
245 static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
247 return to_sas_internal(dev->port->ha->core.shost->transportt);
250 static int sas_get_ata_command_set(struct domain_device *dev);
252 int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
254 if (phy->attached_tproto & SAS_PROTOCOL_STP)
255 dev->tproto = phy->attached_tproto;
256 if (phy->attached_sata_dev)
257 dev->tproto |= SAS_SATA_DEV;
259 if (phy->attached_dev_type == SAS_SATA_PENDING)
260 dev->dev_type = SAS_SATA_PENDING;
264 dev->dev_type = SAS_SATA_DEV;
265 res = sas_get_report_phy_sata(dev->parent, phy->phy_id,
266 &dev->sata_dev.rps_resp);
268 pr_debug("report phy sata to %016llx:%02d returned 0x%x\n",
269 SAS_ADDR(dev->parent->sas_addr),
273 memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
274 sizeof(struct dev_to_host_fis));
275 dev->sata_dev.class = sas_get_ata_command_set(dev);
280 static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
284 /* we weren't pending, so successfully end the reset sequence now */
285 if (dev->dev_type != SAS_SATA_PENDING)
288 /* hmmm, if this succeeds do we need to repost the domain_device to the
289 * lldd so it can pick up new parameters?
291 res = sas_get_ata_info(dev, phy);
293 return 0; /* retry */
298 static int smp_ata_check_ready(struct ata_link *link)
301 struct ata_port *ap = link->ap;
302 struct domain_device *dev = ap->private_data;
303 struct domain_device *ex_dev = dev->parent;
304 struct sas_phy *phy = sas_get_local_phy(dev);
305 struct ex_phy *ex_phy = &ex_dev->ex_dev.ex_phy[phy->number];
307 res = sas_ex_phy_discover(ex_dev, phy->number);
308 sas_put_local_phy(phy);
310 /* break the wait early if the expander is unreachable,
311 * otherwise keep polling
315 if (res != SMP_RESP_FUNC_ACC)
318 switch (ex_phy->attached_dev_type) {
319 case SAS_SATA_PENDING:
322 if (ex_phy->attached_sata_dev)
323 return sas_ata_clear_pending(dev, ex_phy);
330 static int local_ata_check_ready(struct ata_link *link)
332 struct ata_port *ap = link->ap;
333 struct domain_device *dev = ap->private_data;
334 struct sas_internal *i = dev_to_sas_internal(dev);
336 if (i->dft->lldd_ata_check_ready)
337 return i->dft->lldd_ata_check_ready(dev);
339 /* lldd's that don't implement 'ready' checking get the
340 * old default behavior of not coordinating reset
341 * recovery with libata
347 static int sas_ata_printk(const char *level, const struct domain_device *ddev,
348 const char *fmt, ...)
350 struct ata_port *ap = ddev->sata_dev.ap;
351 struct device *dev = &ddev->rphy->dev;
352 struct va_format vaf;
361 r = printk("%s" SAS_FMT "ata%u: %s: %pV",
362 level, ap->print_id, dev_name(dev), &vaf);
369 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
370 unsigned long deadline)
374 struct ata_port *ap = link->ap;
375 int (*check_ready)(struct ata_link *link);
376 struct domain_device *dev = ap->private_data;
377 struct sas_internal *i = dev_to_sas_internal(dev);
379 res = i->dft->lldd_I_T_nexus_reset(dev);
383 if (res != TMF_RESP_FUNC_COMPLETE)
384 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
386 phy = sas_get_local_phy(dev);
387 if (scsi_is_sas_phy_local(phy))
388 check_ready = local_ata_check_ready;
390 check_ready = smp_ata_check_ready;
391 sas_put_local_phy(phy);
393 ret = ata_wait_after_reset(link, deadline, check_ready);
394 if (ret && ret != -EAGAIN)
395 sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
397 *class = dev->sata_dev.class;
399 ap->cbl = ATA_CBL_SATA;
404 * notify the lldd to forget the sas_task for this internal ata command
405 * that bypasses scsi-eh
407 static void sas_ata_internal_abort(struct sas_task *task)
409 struct sas_internal *si = dev_to_sas_internal(task->dev);
413 spin_lock_irqsave(&task->task_state_lock, flags);
414 if (task->task_state_flags & SAS_TASK_STATE_ABORTED ||
415 task->task_state_flags & SAS_TASK_STATE_DONE) {
416 spin_unlock_irqrestore(&task->task_state_lock, flags);
417 pr_debug("%s: Task %p already finished.\n", __func__, task);
420 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
421 spin_unlock_irqrestore(&task->task_state_lock, flags);
423 res = si->dft->lldd_abort_task(task);
425 spin_lock_irqsave(&task->task_state_lock, flags);
426 if (task->task_state_flags & SAS_TASK_STATE_DONE ||
427 res == TMF_RESP_FUNC_COMPLETE) {
428 spin_unlock_irqrestore(&task->task_state_lock, flags);
432 /* XXX we are not prepared to deal with ->lldd_abort_task()
433 * failures. TODO: lldds need to unconditionally forget about
434 * aborted ata tasks, otherwise we (likely) leak the sas task
437 pr_warn("%s: Task %p leaked.\n", __func__, task);
439 if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
440 task->task_state_flags &= ~SAS_TASK_STATE_ABORTED;
441 spin_unlock_irqrestore(&task->task_state_lock, flags);
448 static void sas_ata_post_internal(struct ata_queued_cmd *qc)
450 if (qc->flags & ATA_QCFLAG_FAILED)
451 qc->err_mask |= AC_ERR_OTHER;
455 * Find the sas_task and kill it. By this point, libata
456 * has decided to kill the qc and has frozen the port.
457 * In this state sas_ata_task_done() will no longer free
458 * the sas_task, so we need to notify the lldd (via
459 * ->lldd_abort_task) that the task is dead and free it
462 struct sas_task *task = qc->lldd_task;
464 qc->lldd_task = NULL;
467 task->uldd_task = NULL;
468 sas_ata_internal_abort(task);
473 static void sas_ata_set_dmamode(struct ata_port *ap, struct ata_device *ata_dev)
475 struct domain_device *dev = ap->private_data;
476 struct sas_internal *i = dev_to_sas_internal(dev);
478 if (i->dft->lldd_ata_set_dmamode)
479 i->dft->lldd_ata_set_dmamode(dev);
482 static void sas_ata_sched_eh(struct ata_port *ap)
484 struct domain_device *dev = ap->private_data;
485 struct sas_ha_struct *ha = dev->port->ha;
488 spin_lock_irqsave(&ha->lock, flags);
489 if (!test_and_set_bit(SAS_DEV_EH_PENDING, &dev->state))
491 ata_std_sched_eh(ap);
492 spin_unlock_irqrestore(&ha->lock, flags);
495 void sas_ata_end_eh(struct ata_port *ap)
497 struct domain_device *dev = ap->private_data;
498 struct sas_ha_struct *ha = dev->port->ha;
501 spin_lock_irqsave(&ha->lock, flags);
502 if (test_and_clear_bit(SAS_DEV_EH_PENDING, &dev->state))
504 spin_unlock_irqrestore(&ha->lock, flags);
507 static int sas_ata_prereset(struct ata_link *link, unsigned long deadline)
509 struct ata_port *ap = link->ap;
510 struct domain_device *dev = ap->private_data;
511 struct sas_phy *local_phy = sas_get_local_phy(dev);
514 if (!local_phy->enabled || test_bit(SAS_DEV_GONE, &dev->state))
516 sas_put_local_phy(local_phy);
521 static struct ata_port_operations sas_sata_ops = {
522 .prereset = sas_ata_prereset,
523 .hardreset = sas_ata_hard_reset,
524 .error_handler = ata_std_error_handler,
525 .post_internal_cmd = sas_ata_post_internal,
526 .qc_defer = ata_std_qc_defer,
527 .qc_prep = ata_noop_qc_prep,
528 .qc_issue = sas_ata_qc_issue,
529 .qc_fill_rtf = sas_ata_qc_fill_rtf,
530 .port_start = ata_sas_port_start,
531 .port_stop = ata_sas_port_stop,
532 .set_dmamode = sas_ata_set_dmamode,
533 .sched_eh = sas_ata_sched_eh,
534 .end_eh = sas_ata_end_eh,
537 static struct ata_port_info sata_port_info = {
538 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ |
539 ATA_FLAG_SAS_HOST | ATA_FLAG_FPDMA_AUX,
540 .pio_mask = ATA_PIO4,
541 .mwdma_mask = ATA_MWDMA2,
542 .udma_mask = ATA_UDMA6,
543 .port_ops = &sas_sata_ops
546 int sas_ata_init(struct domain_device *found_dev)
548 struct sas_ha_struct *ha = found_dev->port->ha;
549 struct Scsi_Host *shost = ha->core.shost;
550 struct ata_host *ata_host;
554 ata_host = kzalloc(sizeof(*ata_host), GFP_KERNEL);
556 pr_err("ata host alloc failed.\n");
560 ata_host_init(ata_host, ha->dev, &sas_sata_ops);
562 ap = ata_sas_port_alloc(ata_host, &sata_port_info, shost);
564 pr_err("ata_sas_port_alloc failed.\n");
569 ap->private_data = found_dev;
570 ap->cbl = ATA_CBL_SATA;
571 ap->scsi_host = shost;
572 rc = ata_sas_port_init(ap);
576 rc = ata_sas_tport_add(ata_host->dev, ap);
580 found_dev->sata_dev.ata_host = ata_host;
581 found_dev->sata_dev.ap = ap;
586 ata_sas_port_destroy(ap);
588 ata_host_put(ata_host);
592 void sas_ata_task_abort(struct sas_task *task)
594 struct ata_queued_cmd *qc = task->uldd_task;
595 struct completion *waiting;
597 /* Bounce SCSI-initiated commands to the SCSI EH */
599 blk_abort_request(qc->scsicmd->request);
603 /* Internal command, fake a timeout and complete. */
604 qc->flags &= ~ATA_QCFLAG_ACTIVE;
605 qc->flags |= ATA_QCFLAG_FAILED;
606 qc->err_mask |= AC_ERR_TIMEOUT;
607 waiting = qc->private_data;
611 static int sas_get_ata_command_set(struct domain_device *dev)
613 struct dev_to_host_fis *fis =
614 (struct dev_to_host_fis *) dev->frame_rcvd;
615 struct ata_taskfile tf;
617 if (dev->dev_type == SAS_SATA_PENDING)
618 return ATA_DEV_UNKNOWN;
620 ata_tf_from_fis((const u8 *)fis, &tf);
622 return ata_dev_classify(&tf);
625 void sas_probe_sata(struct asd_sas_port *port)
627 struct domain_device *dev, *n;
629 mutex_lock(&port->ha->disco_mutex);
630 list_for_each_entry(dev, &port->disco_list, disco_list_node) {
631 if (!dev_is_sata(dev))
634 ata_sas_async_probe(dev->sata_dev.ap);
636 mutex_unlock(&port->ha->disco_mutex);
638 list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) {
639 if (!dev_is_sata(dev))
642 sas_ata_wait_eh(dev);
644 /* if libata could not bring the link up, don't surface
647 if (!ata_dev_enabled(sas_to_ata_dev(dev)))
648 sas_fail_probe(dev, __func__, -ENODEV);
653 static void sas_ata_flush_pm_eh(struct asd_sas_port *port, const char *func)
655 struct domain_device *dev, *n;
657 list_for_each_entry_safe(dev, n, &port->dev_list, dev_list_node) {
658 if (!dev_is_sata(dev))
661 sas_ata_wait_eh(dev);
663 /* if libata failed to power manage the device, tear it down */
664 if (ata_dev_disabled(sas_to_ata_dev(dev)))
665 sas_fail_probe(dev, func, -ENODEV);
669 void sas_suspend_sata(struct asd_sas_port *port)
671 struct domain_device *dev;
673 mutex_lock(&port->ha->disco_mutex);
674 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
675 struct sata_device *sata;
677 if (!dev_is_sata(dev))
680 sata = &dev->sata_dev;
681 if (sata->ap->pm_mesg.event == PM_EVENT_SUSPEND)
684 ata_sas_port_suspend(sata->ap);
686 mutex_unlock(&port->ha->disco_mutex);
688 sas_ata_flush_pm_eh(port, __func__);
691 void sas_resume_sata(struct asd_sas_port *port)
693 struct domain_device *dev;
695 mutex_lock(&port->ha->disco_mutex);
696 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
697 struct sata_device *sata;
699 if (!dev_is_sata(dev))
702 sata = &dev->sata_dev;
703 if (sata->ap->pm_mesg.event == PM_EVENT_ON)
706 ata_sas_port_resume(sata->ap);
708 mutex_unlock(&port->ha->disco_mutex);
710 sas_ata_flush_pm_eh(port, __func__);
714 * sas_discover_sata - discover an STP/SATA domain device
715 * @dev: pointer to struct domain_device of interest
717 * Devices directly attached to a HA port, have no parents. All other
718 * devices do, and should have their "parent" pointer set appropriately
719 * before calling this function.
721 int sas_discover_sata(struct domain_device *dev)
723 if (dev->dev_type == SAS_SATA_PM)
726 dev->sata_dev.class = sas_get_ata_command_set(dev);
727 sas_fill_in_rphy(dev, dev->rphy);
729 return sas_notify_lldd_dev_found(dev);
732 static void async_sas_ata_eh(void *data, async_cookie_t cookie)
734 struct domain_device *dev = data;
735 struct ata_port *ap = dev->sata_dev.ap;
736 struct sas_ha_struct *ha = dev->port->ha;
738 sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
739 ata_scsi_port_error_handler(ha->core.shost, ap);
743 void sas_ata_strategy_handler(struct Scsi_Host *shost)
745 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
746 ASYNC_DOMAIN_EXCLUSIVE(async);
749 /* it's ok to defer revalidation events during ata eh, these
750 * disks are in one of three states:
751 * 1/ present for initial domain discovery, and these
752 * resets will cause bcn flutters
753 * 2/ hot removed, we'll discover that after eh fails
754 * 3/ hot added after initial discovery, lost the race, and need
755 * to catch the next train.
757 sas_disable_revalidation(sas_ha);
759 spin_lock_irq(&sas_ha->phy_port_lock);
760 for (i = 0; i < sas_ha->num_phys; i++) {
761 struct asd_sas_port *port = sas_ha->sas_port[i];
762 struct domain_device *dev;
764 spin_lock(&port->dev_list_lock);
765 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
766 if (!dev_is_sata(dev))
769 /* hold a reference over eh since we may be
770 * racing with final remove once all commands
773 kref_get(&dev->kref);
775 async_schedule_domain(async_sas_ata_eh, dev, &async);
777 spin_unlock(&port->dev_list_lock);
779 spin_unlock_irq(&sas_ha->phy_port_lock);
781 async_synchronize_full_domain(&async);
783 sas_enable_revalidation(sas_ha);
786 void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
787 struct list_head *done_q)
789 struct scsi_cmnd *cmd, *n;
790 struct domain_device *eh_dev;
796 list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
797 struct domain_device *ddev = cmd_to_domain_dev(cmd);
799 if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
801 if (eh_dev && eh_dev != ddev)
804 list_move(&cmd->eh_entry, &sata_q);
807 if (!list_empty(&sata_q)) {
808 struct ata_port *ap = eh_dev->sata_dev.ap;
810 sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
811 ata_scsi_cmd_error_handler(shost, ap, &sata_q);
813 * ata's error handler may leave the cmd on the list
814 * so make sure they don't remain on a stack list
815 * about to go out of scope.
817 * This looks strange, since the commands are
818 * now part of no list, but the next error
819 * action will be ata_port_error_handler()
820 * which takes no list and sweeps them up
821 * anyway from the ata tag array.
823 while (!list_empty(&sata_q))
824 list_del_init(sata_q.next);
829 void sas_ata_schedule_reset(struct domain_device *dev)
831 struct ata_eh_info *ehi;
835 if (!dev_is_sata(dev))
838 ap = dev->sata_dev.ap;
839 ehi = &ap->link.eh_info;
841 spin_lock_irqsave(ap->lock, flags);
842 ehi->err_mask |= AC_ERR_TIMEOUT;
843 ehi->action |= ATA_EH_RESET;
844 ata_port_schedule_eh(ap);
845 spin_unlock_irqrestore(ap->lock, flags);
847 EXPORT_SYMBOL_GPL(sas_ata_schedule_reset);
849 void sas_ata_wait_eh(struct domain_device *dev)
853 if (!dev_is_sata(dev))
856 ap = dev->sata_dev.ap;
857 ata_port_wait_eh(ap);