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;
44 return AC_ERR_ATA_BUS;
47 case SAS_DATA_UNDERRUN:
49 * Some programs that use the taskfile interface
50 * (smartctl in particular) can cause underrun
51 * problems. Ignore these errors, perhaps at our
56 case SAS_DATA_OVERRUN:
58 case SAS_DEVICE_UNKNOWN:
60 return AC_ERR_INVALID;
64 pr_warn("%s: Saw error %d. What to do?\n",
68 case SAM_STAT_CHECK_CONDITION:
69 case SAS_ABORTED_TASK:
72 case SAS_PROTO_RESPONSE:
73 /* This means the ending_fis has the error
74 * value; return 0 here to collect it */
81 static void sas_ata_task_done(struct sas_task *task)
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;
90 struct ata_link *link;
93 spin_lock_irqsave(&dev->done_lock, flags);
94 if (test_bit(SAS_HA_FROZEN, &sas_ha->state))
96 else if (qc && qc->scsicmd)
97 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
98 spin_unlock_irqrestore(&dev->done_lock, flags);
100 /* check if libsas-eh got to the task before us */
105 goto qc_already_gone;
110 spin_lock_irqsave(ap->lock, flags);
111 /* check if we lost the race with libata/sas_ata_post_internal() */
112 if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) {
113 spin_unlock_irqrestore(ap->lock, flags);
115 goto qc_already_gone;
117 /* if eh is not involved and the port is frozen then the
118 * ata internal abort process has taken responsibility
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);
130 if (!link->sactive) {
131 qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
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;
138 ac = sas_to_ata_err(stat);
140 pr_warn("%s: SAS error 0x%x\n", __func__, stat->stat);
141 /* We saw a SAS error. Send a vague error. */
142 if (!link->sactive) {
145 link->eh_info.err_mask |= AC_ERR_DEV;
146 qc->flags |= ATA_QCFLAG_FAILED;
149 dev->sata_dev.fis[3] = 0x04; /* status err */
150 dev->sata_dev.fis[2] = ATA_ERR;
154 qc->lldd_task = NULL;
156 spin_unlock_irqrestore(ap->lock, flags);
162 static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
163 __must_hold(ap->lock)
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);
175 /* TODO: we should try to remove that unlock */
176 spin_unlock(ap->lock);
178 /* If the device fell off, no sense in issuing commands */
179 if (test_bit(SAS_DEV_GONE, &dev->state))
182 task = sas_alloc_task(GFP_ATOMIC);
186 task->task_proto = SAS_PROTOCOL_STP;
187 task->task_done = sas_ata_task_done;
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 /* Need to zero out the tag libata assigned us */
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 (!ata_is_data(qc->tf.protocol)) {
206 task->data_dir = DMA_NONE;
208 for_each_sg(qc->sg, sg, qc->n_elem, si)
209 xfer += sg_dma_len(sg);
211 task->total_xfer_len = xfer;
212 task->num_scatter = si;
213 task->data_dir = qc->dma_dir;
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;
220 task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol);
221 task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol);
224 ASSIGN_SAS_TASK(qc->scsicmd, task);
226 ret = i->dft->lldd_execute_task(task, GFP_ATOMIC);
228 pr_debug("lldd_execute_task returned: %d\n", ret);
231 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
233 qc->lldd_task = NULL;
242 static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
244 struct domain_device *dev = qc->ap->private_data;
246 ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
250 static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
252 return to_sas_internal(dev->port->ha->core.shost->transportt);
255 static int sas_get_ata_command_set(struct domain_device *dev);
257 int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
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;
264 if (phy->attached_dev_type == SAS_SATA_PENDING)
265 dev->dev_type = SAS_SATA_PENDING;
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);
273 pr_debug("report phy sata to %016llx:%02d returned 0x%x\n",
274 SAS_ADDR(dev->parent->sas_addr),
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);
285 static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
289 /* we weren't pending, so successfully end the reset sequence now */
290 if (dev->dev_type != SAS_SATA_PENDING)
293 /* hmmm, if this succeeds do we need to repost the domain_device to the
294 * lldd so it can pick up new parameters?
296 res = sas_get_ata_info(dev, phy);
298 return 0; /* retry */
303 static int smp_ata_check_ready(struct ata_link *link)
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];
312 res = sas_ex_phy_discover(ex_dev, phy->number);
313 sas_put_local_phy(phy);
315 /* break the wait early if the expander is unreachable,
316 * otherwise keep polling
320 if (res != SMP_RESP_FUNC_ACC)
323 switch (ex_phy->attached_dev_type) {
324 case SAS_SATA_PENDING:
327 if (ex_phy->attached_sata_dev)
328 return sas_ata_clear_pending(dev, ex_phy);
335 static int local_ata_check_ready(struct ata_link *link)
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);
341 if (i->dft->lldd_ata_check_ready)
342 return i->dft->lldd_ata_check_ready(dev);
344 /* lldd's that don't implement 'ready' checking get the
345 * old default behavior of not coordinating reset
346 * recovery with libata
352 static int sas_ata_printk(const char *level, const struct domain_device *ddev,
353 const char *fmt, ...)
355 struct ata_port *ap = ddev->sata_dev.ap;
356 struct device *dev = &ddev->rphy->dev;
357 struct va_format vaf;
366 r = printk("%s" SAS_FMT "ata%u: %s: %pV",
367 level, ap->print_id, dev_name(dev), &vaf);
374 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
375 unsigned long deadline)
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);
384 res = i->dft->lldd_I_T_nexus_reset(dev);
388 if (res != TMF_RESP_FUNC_COMPLETE)
389 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
391 phy = sas_get_local_phy(dev);
392 if (scsi_is_sas_phy_local(phy))
393 check_ready = local_ata_check_ready;
395 check_ready = smp_ata_check_ready;
396 sas_put_local_phy(phy);
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);
402 *class = dev->sata_dev.class;
404 ap->cbl = ATA_CBL_SATA;
409 * notify the lldd to forget the sas_task for this internal ata command
410 * that bypasses scsi-eh
412 static void sas_ata_internal_abort(struct sas_task *task)
414 struct sas_internal *si = dev_to_sas_internal(task->dev);
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);
425 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
426 spin_unlock_irqrestore(&task->task_state_lock, flags);
428 res = si->dft->lldd_abort_task(task);
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);
437 /* XXX we are not prepared to deal with ->lldd_abort_task()
438 * failures. TODO: lldds need to unconditionally forget about
439 * aborted ata tasks, otherwise we (likely) leak the sas task
442 pr_warn("%s: Task %p leaked.\n", __func__, task);
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);
453 static void sas_ata_post_internal(struct ata_queued_cmd *qc)
455 if (qc->flags & ATA_QCFLAG_FAILED)
456 qc->err_mask |= AC_ERR_OTHER;
460 * Find the sas_task and kill it. By this point, libata
461 * has decided to kill the qc and has frozen the port.
462 * In this state sas_ata_task_done() will no longer free
463 * the sas_task, so we need to notify the lldd (via
464 * ->lldd_abort_task) that the task is dead and free it
467 struct sas_task *task = qc->lldd_task;
469 qc->lldd_task = NULL;
472 task->uldd_task = NULL;
473 sas_ata_internal_abort(task);
478 static void sas_ata_set_dmamode(struct ata_port *ap, struct ata_device *ata_dev)
480 struct domain_device *dev = ap->private_data;
481 struct sas_internal *i = dev_to_sas_internal(dev);
483 if (i->dft->lldd_ata_set_dmamode)
484 i->dft->lldd_ata_set_dmamode(dev);
487 static void sas_ata_sched_eh(struct ata_port *ap)
489 struct domain_device *dev = ap->private_data;
490 struct sas_ha_struct *ha = dev->port->ha;
493 spin_lock_irqsave(&ha->lock, flags);
494 if (!test_and_set_bit(SAS_DEV_EH_PENDING, &dev->state))
496 ata_std_sched_eh(ap);
497 spin_unlock_irqrestore(&ha->lock, flags);
500 void sas_ata_end_eh(struct ata_port *ap)
502 struct domain_device *dev = ap->private_data;
503 struct sas_ha_struct *ha = dev->port->ha;
506 spin_lock_irqsave(&ha->lock, flags);
507 if (test_and_clear_bit(SAS_DEV_EH_PENDING, &dev->state))
509 spin_unlock_irqrestore(&ha->lock, flags);
512 static int sas_ata_prereset(struct ata_link *link, unsigned long deadline)
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);
519 if (!local_phy->enabled || test_bit(SAS_DEV_GONE, &dev->state))
521 sas_put_local_phy(local_phy);
526 static 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,
542 static 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
551 int sas_ata_init(struct domain_device *found_dev)
553 struct sas_ha_struct *ha = found_dev->port->ha;
554 struct Scsi_Host *shost = ha->core.shost;
555 struct ata_host *ata_host;
559 ata_host = kzalloc(sizeof(*ata_host), GFP_KERNEL);
561 pr_err("ata host alloc failed.\n");
565 ata_host_init(ata_host, ha->dev, &sas_sata_ops);
567 ap = ata_sas_port_alloc(ata_host, &sata_port_info, shost);
569 pr_err("ata_sas_port_alloc failed.\n");
574 ap->private_data = found_dev;
575 ap->cbl = ATA_CBL_SATA;
576 ap->scsi_host = shost;
577 rc = ata_sas_port_init(ap);
581 rc = ata_sas_tport_add(ata_host->dev, ap);
585 found_dev->sata_dev.ata_host = ata_host;
586 found_dev->sata_dev.ap = ap;
591 ata_sas_port_destroy(ap);
593 ata_host_put(ata_host);
597 void sas_ata_task_abort(struct sas_task *task)
599 struct ata_queued_cmd *qc = task->uldd_task;
600 struct completion *waiting;
602 /* Bounce SCSI-initiated commands to the SCSI EH */
604 blk_abort_request(qc->scsicmd->request);
608 /* Internal command, fake a timeout and complete. */
609 qc->flags &= ~ATA_QCFLAG_ACTIVE;
610 qc->flags |= ATA_QCFLAG_FAILED;
611 qc->err_mask |= AC_ERR_TIMEOUT;
612 waiting = qc->private_data;
616 static int sas_get_ata_command_set(struct domain_device *dev)
618 struct dev_to_host_fis *fis =
619 (struct dev_to_host_fis *) dev->frame_rcvd;
620 struct ata_taskfile tf;
622 if (dev->dev_type == SAS_SATA_PENDING)
623 return ATA_DEV_UNKNOWN;
625 ata_tf_from_fis((const u8 *)fis, &tf);
627 return ata_dev_classify(&tf);
630 void sas_probe_sata(struct asd_sas_port *port)
632 struct domain_device *dev, *n;
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))
639 ata_sas_async_probe(dev->sata_dev.ap);
641 mutex_unlock(&port->ha->disco_mutex);
643 list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) {
644 if (!dev_is_sata(dev))
647 sas_ata_wait_eh(dev);
649 /* if libata could not bring the link up, don't surface
652 if (!ata_dev_enabled(sas_to_ata_dev(dev)))
653 sas_fail_probe(dev, __func__, -ENODEV);
658 static void sas_ata_flush_pm_eh(struct asd_sas_port *port, const char *func)
660 struct domain_device *dev, *n;
662 list_for_each_entry_safe(dev, n, &port->dev_list, dev_list_node) {
663 if (!dev_is_sata(dev))
666 sas_ata_wait_eh(dev);
668 /* if libata failed to power manage the device, tear it down */
669 if (ata_dev_disabled(sas_to_ata_dev(dev)))
670 sas_fail_probe(dev, func, -ENODEV);
674 void sas_suspend_sata(struct asd_sas_port *port)
676 struct domain_device *dev;
678 mutex_lock(&port->ha->disco_mutex);
679 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
680 struct sata_device *sata;
682 if (!dev_is_sata(dev))
685 sata = &dev->sata_dev;
686 if (sata->ap->pm_mesg.event == PM_EVENT_SUSPEND)
689 ata_sas_port_suspend(sata->ap);
691 mutex_unlock(&port->ha->disco_mutex);
693 sas_ata_flush_pm_eh(port, __func__);
696 void sas_resume_sata(struct asd_sas_port *port)
698 struct domain_device *dev;
700 mutex_lock(&port->ha->disco_mutex);
701 list_for_each_entry(dev, &port->dev_list, dev_list_node) {
702 struct sata_device *sata;
704 if (!dev_is_sata(dev))
707 sata = &dev->sata_dev;
708 if (sata->ap->pm_mesg.event == PM_EVENT_ON)
711 ata_sas_port_resume(sata->ap);
713 mutex_unlock(&port->ha->disco_mutex);
715 sas_ata_flush_pm_eh(port, __func__);
719 * sas_discover_sata - discover an STP/SATA domain device
720 * @dev: pointer to struct domain_device of interest
722 * Devices directly attached to a HA port, have no parents. All other
723 * devices do, and should have their "parent" pointer set appropriately
724 * before calling this function.
726 int sas_discover_sata(struct domain_device *dev)
728 if (dev->dev_type == SAS_SATA_PM)
731 dev->sata_dev.class = sas_get_ata_command_set(dev);
732 sas_fill_in_rphy(dev, dev->rphy);
734 return sas_notify_lldd_dev_found(dev);
737 static void async_sas_ata_eh(void *data, async_cookie_t cookie)
739 struct domain_device *dev = data;
740 struct ata_port *ap = dev->sata_dev.ap;
741 struct sas_ha_struct *ha = dev->port->ha;
743 sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
744 ata_scsi_port_error_handler(ha->core.shost, ap);
748 void sas_ata_strategy_handler(struct Scsi_Host *shost)
750 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
751 ASYNC_DOMAIN_EXCLUSIVE(async);
754 /* it's ok to defer revalidation events during ata eh, these
755 * disks are in one of three states:
756 * 1/ present for initial domain discovery, and these
757 * resets will cause bcn flutters
758 * 2/ hot removed, we'll discover that after eh fails
759 * 3/ hot added after initial discovery, lost the race, and need
760 * to catch the next train.
762 sas_disable_revalidation(sas_ha);
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;
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))
774 /* hold a reference over eh since we may be
775 * racing with final remove once all commands
778 kref_get(&dev->kref);
780 async_schedule_domain(async_sas_ata_eh, dev, &async);
782 spin_unlock(&port->dev_list_lock);
784 spin_unlock_irq(&sas_ha->phy_port_lock);
786 async_synchronize_full_domain(&async);
788 sas_enable_revalidation(sas_ha);
791 void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
792 struct list_head *done_q)
794 struct scsi_cmnd *cmd, *n;
795 struct domain_device *eh_dev;
801 list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
802 struct domain_device *ddev = cmd_to_domain_dev(cmd);
804 if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
806 if (eh_dev && eh_dev != ddev)
809 list_move(&cmd->eh_entry, &sata_q);
812 if (!list_empty(&sata_q)) {
813 struct ata_port *ap = eh_dev->sata_dev.ap;
815 sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
816 ata_scsi_cmd_error_handler(shost, ap, &sata_q);
818 * ata's error handler may leave the cmd on the list
819 * so make sure they don't remain on a stack list
820 * about to go out of scope.
822 * This looks strange, since the commands are
823 * now part of no list, but the next error
824 * action will be ata_port_error_handler()
825 * which takes no list and sweeps them up
826 * anyway from the ata tag array.
828 while (!list_empty(&sata_q))
829 list_del_init(sata_q.next);
834 void sas_ata_schedule_reset(struct domain_device *dev)
836 struct ata_eh_info *ehi;
840 if (!dev_is_sata(dev))
843 ap = dev->sata_dev.ap;
844 ehi = &ap->link.eh_info;
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);
852 EXPORT_SYMBOL_GPL(sas_ata_schedule_reset);
854 void sas_ata_wait_eh(struct domain_device *dev)
858 if (!dev_is_sata(dev))
861 ap = dev->sata_dev.ap;
862 ata_port_wait_eh(ap);