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 || stat->stat == SAM_STAT_GOOD ||
120 ((stat->stat == SAM_STAT_CHECK_CONDITION &&
121 dev->sata_dev.class == ATA_DEV_ATAPI))) {
122 memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
124 if (!link->sactive) {
125 qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
127 link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
128 if (unlikely(link->eh_info.err_mask))
129 qc->flags |= ATA_QCFLAG_FAILED;
132 ac = sas_to_ata_err(stat);
134 pr_warn("%s: SAS error 0x%x\n", __func__, stat->stat);
135 /* We saw a SAS error. Send a vague error. */
136 if (!link->sactive) {
139 link->eh_info.err_mask |= AC_ERR_DEV;
140 qc->flags |= ATA_QCFLAG_FAILED;
143 dev->sata_dev.fis[3] = 0x04; /* status err */
144 dev->sata_dev.fis[2] = ATA_ERR;
148 qc->lldd_task = NULL;
150 spin_unlock_irqrestore(ap->lock, flags);
156 static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
157 __must_hold(ap->lock)
159 struct sas_task *task;
160 struct scatterlist *sg;
161 int ret = AC_ERR_SYSTEM;
162 unsigned int si, xfer = 0;
163 struct ata_port *ap = qc->ap;
164 struct domain_device *dev = ap->private_data;
165 struct sas_ha_struct *sas_ha = dev->port->ha;
166 struct Scsi_Host *host = sas_ha->core.shost;
167 struct sas_internal *i = to_sas_internal(host->transportt);
169 /* TODO: we should try to remove that unlock */
170 spin_unlock(ap->lock);
172 /* If the device fell off, no sense in issuing commands */
173 if (test_bit(SAS_DEV_GONE, &dev->state))
176 task = sas_alloc_task(GFP_ATOMIC);
180 task->task_proto = SAS_PROTOCOL_STP;
181 task->task_done = sas_ata_task_done;
183 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
184 qc->tf.command == ATA_CMD_FPDMA_READ ||
185 qc->tf.command == ATA_CMD_FPDMA_RECV ||
186 qc->tf.command == ATA_CMD_FPDMA_SEND ||
187 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
188 /* Need to zero out the tag libata assigned us */
192 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
193 task->uldd_task = qc;
194 if (ata_is_atapi(qc->tf.protocol)) {
195 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
196 task->total_xfer_len = qc->nbytes;
197 task->num_scatter = qc->n_elem;
198 task->data_dir = qc->dma_dir;
199 } else if (qc->tf.protocol == ATA_PROT_NODATA) {
200 task->data_dir = DMA_NONE;
202 for_each_sg(qc->sg, sg, qc->n_elem, si)
203 xfer += sg_dma_len(sg);
205 task->total_xfer_len = xfer;
206 task->num_scatter = si;
207 task->data_dir = qc->dma_dir;
209 task->scatter = qc->sg;
210 task->ata_task.retry_count = 1;
211 task->task_state_flags = SAS_TASK_STATE_PENDING;
212 qc->lldd_task = task;
214 task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol);
215 task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol);
218 ASSIGN_SAS_TASK(qc->scsicmd, task);
220 ret = i->dft->lldd_execute_task(task, GFP_ATOMIC);
222 pr_debug("lldd_execute_task returned: %d\n", ret);
225 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
227 qc->lldd_task = NULL;
236 static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
238 struct domain_device *dev = qc->ap->private_data;
240 ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
244 static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
246 return to_sas_internal(dev->port->ha->core.shost->transportt);
249 static int sas_get_ata_command_set(struct domain_device *dev);
251 int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
253 if (phy->attached_tproto & SAS_PROTOCOL_STP)
254 dev->tproto = phy->attached_tproto;
255 if (phy->attached_sata_dev)
256 dev->tproto |= SAS_SATA_DEV;
258 if (phy->attached_dev_type == SAS_SATA_PENDING)
259 dev->dev_type = SAS_SATA_PENDING;
263 dev->dev_type = SAS_SATA_DEV;
264 res = sas_get_report_phy_sata(dev->parent, phy->phy_id,
265 &dev->sata_dev.rps_resp);
267 pr_debug("report phy sata to %016llx:%02d returned 0x%x\n",
268 SAS_ADDR(dev->parent->sas_addr),
272 memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
273 sizeof(struct dev_to_host_fis));
274 dev->sata_dev.class = sas_get_ata_command_set(dev);
279 static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
283 /* we weren't pending, so successfully end the reset sequence now */
284 if (dev->dev_type != SAS_SATA_PENDING)
287 /* hmmm, if this succeeds do we need to repost the domain_device to the
288 * lldd so it can pick up new parameters?
290 res = sas_get_ata_info(dev, phy);
292 return 0; /* retry */
297 static int smp_ata_check_ready(struct ata_link *link)
300 struct ata_port *ap = link->ap;
301 struct domain_device *dev = ap->private_data;
302 struct domain_device *ex_dev = dev->parent;
303 struct sas_phy *phy = sas_get_local_phy(dev);
304 struct ex_phy *ex_phy = &ex_dev->ex_dev.ex_phy[phy->number];
306 res = sas_ex_phy_discover(ex_dev, phy->number);
307 sas_put_local_phy(phy);
309 /* break the wait early if the expander is unreachable,
310 * otherwise keep polling
314 if (res != SMP_RESP_FUNC_ACC)
317 switch (ex_phy->attached_dev_type) {
318 case SAS_SATA_PENDING:
321 if (ex_phy->attached_sata_dev)
322 return sas_ata_clear_pending(dev, ex_phy);
329 static int local_ata_check_ready(struct ata_link *link)
331 struct ata_port *ap = link->ap;
332 struct domain_device *dev = ap->private_data;
333 struct sas_internal *i = dev_to_sas_internal(dev);
335 if (i->dft->lldd_ata_check_ready)
336 return i->dft->lldd_ata_check_ready(dev);
338 /* lldd's that don't implement 'ready' checking get the
339 * old default behavior of not coordinating reset
340 * recovery with libata
346 static int sas_ata_printk(const char *level, const struct domain_device *ddev,
347 const char *fmt, ...)
349 struct ata_port *ap = ddev->sata_dev.ap;
350 struct device *dev = &ddev->rphy->dev;
351 struct va_format vaf;
360 r = printk("%s" SAS_FMT "ata%u: %s: %pV",
361 level, ap->print_id, dev_name(dev), &vaf);
368 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
369 unsigned long deadline)
373 struct ata_port *ap = link->ap;
374 int (*check_ready)(struct ata_link *link);
375 struct domain_device *dev = ap->private_data;
376 struct sas_internal *i = dev_to_sas_internal(dev);
378 res = i->dft->lldd_I_T_nexus_reset(dev);
382 if (res != TMF_RESP_FUNC_COMPLETE)
383 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
385 phy = sas_get_local_phy(dev);
386 if (scsi_is_sas_phy_local(phy))
387 check_ready = local_ata_check_ready;
389 check_ready = smp_ata_check_ready;
390 sas_put_local_phy(phy);
392 ret = ata_wait_after_reset(link, deadline, check_ready);
393 if (ret && ret != -EAGAIN)
394 sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
396 *class = dev->sata_dev.class;
398 ap->cbl = ATA_CBL_SATA;
403 * notify the lldd to forget the sas_task for this internal ata command
404 * that bypasses scsi-eh
406 static void sas_ata_internal_abort(struct sas_task *task)
408 struct sas_internal *si = dev_to_sas_internal(task->dev);
412 spin_lock_irqsave(&task->task_state_lock, flags);
413 if (task->task_state_flags & SAS_TASK_STATE_ABORTED ||
414 task->task_state_flags & SAS_TASK_STATE_DONE) {
415 spin_unlock_irqrestore(&task->task_state_lock, flags);
416 pr_debug("%s: Task %p already finished.\n", __func__, task);
419 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
420 spin_unlock_irqrestore(&task->task_state_lock, flags);
422 res = si->dft->lldd_abort_task(task);
424 spin_lock_irqsave(&task->task_state_lock, flags);
425 if (task->task_state_flags & SAS_TASK_STATE_DONE ||
426 res == TMF_RESP_FUNC_COMPLETE) {
427 spin_unlock_irqrestore(&task->task_state_lock, flags);
431 /* XXX we are not prepared to deal with ->lldd_abort_task()
432 * failures. TODO: lldds need to unconditionally forget about
433 * aborted ata tasks, otherwise we (likely) leak the sas task
436 pr_warn("%s: Task %p leaked.\n", __func__, task);
438 if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
439 task->task_state_flags &= ~SAS_TASK_STATE_ABORTED;
440 spin_unlock_irqrestore(&task->task_state_lock, flags);
447 static void sas_ata_post_internal(struct ata_queued_cmd *qc)
449 if (qc->flags & ATA_QCFLAG_FAILED)
450 qc->err_mask |= AC_ERR_OTHER;
454 * Find the sas_task and kill it. By this point, libata
455 * has decided to kill the qc and has frozen the port.
456 * In this state sas_ata_task_done() will no longer free
457 * the sas_task, so we need to notify the lldd (via
458 * ->lldd_abort_task) that the task is dead and free it
461 struct sas_task *task = qc->lldd_task;
463 qc->lldd_task = NULL;
466 task->uldd_task = NULL;
467 sas_ata_internal_abort(task);
472 static void sas_ata_set_dmamode(struct ata_port *ap, struct ata_device *ata_dev)
474 struct domain_device *dev = ap->private_data;
475 struct sas_internal *i = dev_to_sas_internal(dev);
477 if (i->dft->lldd_ata_set_dmamode)
478 i->dft->lldd_ata_set_dmamode(dev);
481 static void sas_ata_sched_eh(struct ata_port *ap)
483 struct domain_device *dev = ap->private_data;
484 struct sas_ha_struct *ha = dev->port->ha;
487 spin_lock_irqsave(&ha->lock, flags);
488 if (!test_and_set_bit(SAS_DEV_EH_PENDING, &dev->state))
490 ata_std_sched_eh(ap);
491 spin_unlock_irqrestore(&ha->lock, flags);
494 void sas_ata_end_eh(struct ata_port *ap)
496 struct domain_device *dev = ap->private_data;
497 struct sas_ha_struct *ha = dev->port->ha;
500 spin_lock_irqsave(&ha->lock, flags);
501 if (test_and_clear_bit(SAS_DEV_EH_PENDING, &dev->state))
503 spin_unlock_irqrestore(&ha->lock, flags);
506 static int sas_ata_prereset(struct ata_link *link, unsigned long deadline)
508 struct ata_port *ap = link->ap;
509 struct domain_device *dev = ap->private_data;
510 struct sas_phy *local_phy = sas_get_local_phy(dev);
513 if (!local_phy->enabled || test_bit(SAS_DEV_GONE, &dev->state))
515 sas_put_local_phy(local_phy);
520 static struct ata_port_operations sas_sata_ops = {
521 .prereset = sas_ata_prereset,
522 .hardreset = sas_ata_hard_reset,
523 .error_handler = ata_std_error_handler,
524 .post_internal_cmd = sas_ata_post_internal,
525 .qc_defer = ata_std_qc_defer,
526 .qc_prep = ata_noop_qc_prep,
527 .qc_issue = sas_ata_qc_issue,
528 .qc_fill_rtf = sas_ata_qc_fill_rtf,
529 .port_start = ata_sas_port_start,
530 .port_stop = ata_sas_port_stop,
531 .set_dmamode = sas_ata_set_dmamode,
532 .sched_eh = sas_ata_sched_eh,
533 .end_eh = sas_ata_end_eh,
536 static struct ata_port_info sata_port_info = {
537 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ |
538 ATA_FLAG_SAS_HOST | ATA_FLAG_FPDMA_AUX,
539 .pio_mask = ATA_PIO4,
540 .mwdma_mask = ATA_MWDMA2,
541 .udma_mask = ATA_UDMA6,
542 .port_ops = &sas_sata_ops
545 int sas_ata_init(struct domain_device *found_dev)
547 struct sas_ha_struct *ha = found_dev->port->ha;
548 struct Scsi_Host *shost = ha->core.shost;
549 struct ata_host *ata_host;
553 ata_host = kzalloc(sizeof(*ata_host), GFP_KERNEL);
555 pr_err("ata host alloc failed.\n");
559 ata_host_init(ata_host, ha->dev, &sas_sata_ops);
561 ap = ata_sas_port_alloc(ata_host, &sata_port_info, shost);
563 pr_err("ata_sas_port_alloc failed.\n");
568 ap->private_data = found_dev;
569 ap->cbl = ATA_CBL_SATA;
570 ap->scsi_host = shost;
571 rc = ata_sas_port_init(ap);
575 rc = ata_sas_tport_add(ata_host->dev, ap);
579 found_dev->sata_dev.ata_host = ata_host;
580 found_dev->sata_dev.ap = ap;
585 ata_sas_port_destroy(ap);
587 ata_host_put(ata_host);
591 void sas_ata_task_abort(struct sas_task *task)
593 struct ata_queued_cmd *qc = task->uldd_task;
594 struct completion *waiting;
596 /* Bounce SCSI-initiated commands to the SCSI EH */
598 blk_abort_request(qc->scsicmd->request);
602 /* Internal command, fake a timeout and complete. */
603 qc->flags &= ~ATA_QCFLAG_ACTIVE;
604 qc->flags |= ATA_QCFLAG_FAILED;
605 qc->err_mask |= AC_ERR_TIMEOUT;
606 waiting = qc->private_data;
610 static int sas_get_ata_command_set(struct domain_device *dev)
612 struct dev_to_host_fis *fis =
613 (struct dev_to_host_fis *) dev->frame_rcvd;
614 struct ata_taskfile tf;
616 if (dev->dev_type == SAS_SATA_PENDING)
617 return ATA_DEV_UNKNOWN;
619 ata_tf_from_fis((const u8 *)fis, &tf);
621 return ata_dev_classify(&tf);
624 void sas_probe_sata(struct asd_sas_port *port)
626 struct domain_device *dev, *n;
628 mutex_lock(&port->ha->disco_mutex);
629 list_for_each_entry(dev, &port->disco_list, disco_list_node) {
630 if (!dev_is_sata(dev))
633 ata_sas_async_probe(dev->sata_dev.ap);
635 mutex_unlock(&port->ha->disco_mutex);
637 list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) {
638 if (!dev_is_sata(dev))
641 sas_ata_wait_eh(dev);
643 /* if libata could not bring the link up, don't surface
646 if (!ata_dev_enabled(sas_to_ata_dev(dev)))
647 sas_fail_probe(dev, __func__, -ENODEV);
652 static void sas_ata_flush_pm_eh(struct asd_sas_port *port, const char *func)
654 struct domain_device *dev, *n;
656 list_for_each_entry_safe(dev, n, &port->dev_list, dev_list_node) {
657 if (!dev_is_sata(dev))
660 sas_ata_wait_eh(dev);
662 /* if libata failed to power manage the device, tear it down */
663 if (ata_dev_disabled(sas_to_ata_dev(dev)))
664 sas_fail_probe(dev, func, -ENODEV);
668 void sas_suspend_sata(struct asd_sas_port *port)
670 struct domain_device *dev;
672 mutex_lock(&port->ha->disco_mutex);
673 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
674 struct sata_device *sata;
676 if (!dev_is_sata(dev))
679 sata = &dev->sata_dev;
680 if (sata->ap->pm_mesg.event == PM_EVENT_SUSPEND)
683 ata_sas_port_suspend(sata->ap);
685 mutex_unlock(&port->ha->disco_mutex);
687 sas_ata_flush_pm_eh(port, __func__);
690 void sas_resume_sata(struct asd_sas_port *port)
692 struct domain_device *dev;
694 mutex_lock(&port->ha->disco_mutex);
695 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
696 struct sata_device *sata;
698 if (!dev_is_sata(dev))
701 sata = &dev->sata_dev;
702 if (sata->ap->pm_mesg.event == PM_EVENT_ON)
705 ata_sas_port_resume(sata->ap);
707 mutex_unlock(&port->ha->disco_mutex);
709 sas_ata_flush_pm_eh(port, __func__);
713 * sas_discover_sata - discover an STP/SATA domain device
714 * @dev: pointer to struct domain_device of interest
716 * Devices directly attached to a HA port, have no parents. All other
717 * devices do, and should have their "parent" pointer set appropriately
718 * before calling this function.
720 int sas_discover_sata(struct domain_device *dev)
722 if (dev->dev_type == SAS_SATA_PM)
725 dev->sata_dev.class = sas_get_ata_command_set(dev);
726 sas_fill_in_rphy(dev, dev->rphy);
728 return sas_notify_lldd_dev_found(dev);
731 static void async_sas_ata_eh(void *data, async_cookie_t cookie)
733 struct domain_device *dev = data;
734 struct ata_port *ap = dev->sata_dev.ap;
735 struct sas_ha_struct *ha = dev->port->ha;
737 sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
738 ata_scsi_port_error_handler(ha->core.shost, ap);
742 void sas_ata_strategy_handler(struct Scsi_Host *shost)
744 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
745 ASYNC_DOMAIN_EXCLUSIVE(async);
748 /* it's ok to defer revalidation events during ata eh, these
749 * disks are in one of three states:
750 * 1/ present for initial domain discovery, and these
751 * resets will cause bcn flutters
752 * 2/ hot removed, we'll discover that after eh fails
753 * 3/ hot added after initial discovery, lost the race, and need
754 * to catch the next train.
756 sas_disable_revalidation(sas_ha);
758 spin_lock_irq(&sas_ha->phy_port_lock);
759 for (i = 0; i < sas_ha->num_phys; i++) {
760 struct asd_sas_port *port = sas_ha->sas_port[i];
761 struct domain_device *dev;
763 spin_lock(&port->dev_list_lock);
764 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
765 if (!dev_is_sata(dev))
768 /* hold a reference over eh since we may be
769 * racing with final remove once all commands
772 kref_get(&dev->kref);
774 async_schedule_domain(async_sas_ata_eh, dev, &async);
776 spin_unlock(&port->dev_list_lock);
778 spin_unlock_irq(&sas_ha->phy_port_lock);
780 async_synchronize_full_domain(&async);
782 sas_enable_revalidation(sas_ha);
785 void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
786 struct list_head *done_q)
788 struct scsi_cmnd *cmd, *n;
789 struct domain_device *eh_dev;
795 list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
796 struct domain_device *ddev = cmd_to_domain_dev(cmd);
798 if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
800 if (eh_dev && eh_dev != ddev)
803 list_move(&cmd->eh_entry, &sata_q);
806 if (!list_empty(&sata_q)) {
807 struct ata_port *ap = eh_dev->sata_dev.ap;
809 sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
810 ata_scsi_cmd_error_handler(shost, ap, &sata_q);
812 * ata's error handler may leave the cmd on the list
813 * so make sure they don't remain on a stack list
814 * about to go out of scope.
816 * This looks strange, since the commands are
817 * now part of no list, but the next error
818 * action will be ata_port_error_handler()
819 * which takes no list and sweeps them up
820 * anyway from the ata tag array.
822 while (!list_empty(&sata_q))
823 list_del_init(sata_q.next);
828 void sas_ata_schedule_reset(struct domain_device *dev)
830 struct ata_eh_info *ehi;
834 if (!dev_is_sata(dev))
837 ap = dev->sata_dev.ap;
838 ehi = &ap->link.eh_info;
840 spin_lock_irqsave(ap->lock, flags);
841 ehi->err_mask |= AC_ERR_TIMEOUT;
842 ehi->action |= ATA_EH_RESET;
843 ata_port_schedule_eh(ap);
844 spin_unlock_irqrestore(ap->lock, flags);
846 EXPORT_SYMBOL_GPL(sas_ata_schedule_reset);
848 void sas_ata_wait_eh(struct domain_device *dev)
852 if (!dev_is_sata(dev))
855 ap = dev->sata_dev.ap;
856 ata_port_wait_eh(ap);