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:
57 pr_warn("%s: Saw error %d. What to do?\n",
60 case SAM_STAT_CHECK_CONDITION:
61 case SAS_ABORTED_TASK:
63 case SAS_PROTO_RESPONSE:
64 /* This means the ending_fis has the error
65 * value; return 0 here to collect it
73 static void sas_ata_task_done(struct sas_task *task)
75 struct ata_queued_cmd *qc = task->uldd_task;
76 struct domain_device *dev = task->dev;
77 struct task_status_struct *stat = &task->task_status;
78 struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
79 struct sas_ha_struct *sas_ha = dev->port->ha;
80 enum ata_completion_errors ac;
82 struct ata_link *link;
85 spin_lock_irqsave(&dev->done_lock, flags);
86 if (test_bit(SAS_HA_FROZEN, &sas_ha->state))
88 else if (qc && qc->scsicmd)
89 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
90 spin_unlock_irqrestore(&dev->done_lock, flags);
92 /* check if libsas-eh got to the task before us */
102 spin_lock_irqsave(ap->lock, flags);
103 /* check if we lost the race with libata/sas_ata_post_internal() */
104 if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) {
105 spin_unlock_irqrestore(ap->lock, flags);
107 goto qc_already_gone;
109 /* if eh is not involved and the port is frozen then the
110 * ata internal abort process has taken responsibility
117 if (stat->stat == SAS_PROTO_RESPONSE ||
118 stat->stat == SAS_SAM_STAT_GOOD ||
119 (stat->stat == SAS_SAM_STAT_CHECK_CONDITION &&
120 dev->sata_dev.class == ATA_DEV_ATAPI)) {
121 memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
123 if (!link->sactive) {
124 qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
126 link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
127 if (unlikely(link->eh_info.err_mask))
128 qc->flags |= ATA_QCFLAG_FAILED;
131 ac = sas_to_ata_err(stat);
133 pr_warn("%s: SAS error 0x%x\n", __func__, stat->stat);
134 /* We saw a SAS error. Send a vague error. */
135 if (!link->sactive) {
138 link->eh_info.err_mask |= AC_ERR_DEV;
139 qc->flags |= ATA_QCFLAG_FAILED;
142 dev->sata_dev.fis[3] = 0x04; /* status err */
143 dev->sata_dev.fis[2] = ATA_ERR;
147 qc->lldd_task = NULL;
149 spin_unlock_irqrestore(ap->lock, flags);
155 static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
156 __must_hold(ap->lock)
158 struct sas_task *task;
159 struct scatterlist *sg;
160 int ret = AC_ERR_SYSTEM;
161 unsigned int si, xfer = 0;
162 struct ata_port *ap = qc->ap;
163 struct domain_device *dev = ap->private_data;
164 struct sas_ha_struct *sas_ha = dev->port->ha;
165 struct Scsi_Host *host = sas_ha->core.shost;
166 struct sas_internal *i = to_sas_internal(host->transportt);
168 /* TODO: we should try to remove that unlock */
169 spin_unlock(ap->lock);
171 /* If the device fell off, no sense in issuing commands */
172 if (test_bit(SAS_DEV_GONE, &dev->state))
175 task = sas_alloc_task(GFP_ATOMIC);
179 task->task_proto = SAS_PROTOCOL_STP;
180 task->task_done = sas_ata_task_done;
182 /* For NCQ commands, zero out the tag libata assigned us */
183 if (ata_is_ncq(qc->tf.protocol))
186 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *)&task->ata_task.fis);
187 task->uldd_task = qc;
188 if (ata_is_atapi(qc->tf.protocol)) {
189 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
190 task->total_xfer_len = qc->nbytes;
191 task->num_scatter = qc->n_elem;
192 task->data_dir = qc->dma_dir;
193 } else if (!ata_is_data(qc->tf.protocol)) {
194 task->data_dir = DMA_NONE;
196 for_each_sg(qc->sg, sg, qc->n_elem, si)
197 xfer += sg_dma_len(sg);
199 task->total_xfer_len = xfer;
200 task->num_scatter = si;
201 task->data_dir = qc->dma_dir;
203 task->scatter = qc->sg;
204 task->ata_task.retry_count = 1;
205 qc->lldd_task = task;
207 task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol);
208 task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol);
211 ASSIGN_SAS_TASK(qc->scsicmd, task);
213 ret = i->dft->lldd_execute_task(task, GFP_ATOMIC);
215 pr_debug("lldd_execute_task returned: %d\n", ret);
218 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
220 qc->lldd_task = NULL;
229 static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
231 struct domain_device *dev = qc->ap->private_data;
233 ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
237 static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
239 return to_sas_internal(dev->port->ha->core.shost->transportt);
242 static int sas_get_ata_command_set(struct domain_device *dev);
244 int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
246 if (phy->attached_tproto & SAS_PROTOCOL_STP)
247 dev->tproto = phy->attached_tproto;
248 if (phy->attached_sata_dev)
249 dev->tproto |= SAS_SATA_DEV;
251 if (phy->attached_dev_type == SAS_SATA_PENDING)
252 dev->dev_type = SAS_SATA_PENDING;
256 dev->dev_type = SAS_SATA_DEV;
257 res = sas_get_report_phy_sata(dev->parent, phy->phy_id,
258 &dev->sata_dev.rps_resp);
260 pr_debug("report phy sata to %016llx:%02d returned 0x%x\n",
261 SAS_ADDR(dev->parent->sas_addr),
265 memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
266 sizeof(struct dev_to_host_fis));
267 dev->sata_dev.class = sas_get_ata_command_set(dev);
272 static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
276 /* we weren't pending, so successfully end the reset sequence now */
277 if (dev->dev_type != SAS_SATA_PENDING)
280 /* hmmm, if this succeeds do we need to repost the domain_device to the
281 * lldd so it can pick up new parameters?
283 res = sas_get_ata_info(dev, phy);
285 return 0; /* retry */
290 static int smp_ata_check_ready(struct ata_link *link)
293 struct ata_port *ap = link->ap;
294 struct domain_device *dev = ap->private_data;
295 struct domain_device *ex_dev = dev->parent;
296 struct sas_phy *phy = sas_get_local_phy(dev);
297 struct ex_phy *ex_phy = &ex_dev->ex_dev.ex_phy[phy->number];
299 res = sas_ex_phy_discover(ex_dev, phy->number);
300 sas_put_local_phy(phy);
302 /* break the wait early if the expander is unreachable,
303 * otherwise keep polling
307 if (res != SMP_RESP_FUNC_ACC)
310 switch (ex_phy->attached_dev_type) {
311 case SAS_SATA_PENDING:
314 if (ex_phy->attached_sata_dev)
315 return sas_ata_clear_pending(dev, ex_phy);
322 static int local_ata_check_ready(struct ata_link *link)
324 struct ata_port *ap = link->ap;
325 struct domain_device *dev = ap->private_data;
326 struct sas_internal *i = dev_to_sas_internal(dev);
328 if (i->dft->lldd_ata_check_ready)
329 return i->dft->lldd_ata_check_ready(dev);
331 /* lldd's that don't implement 'ready' checking get the
332 * old default behavior of not coordinating reset
333 * recovery with libata
339 static int sas_ata_printk(const char *level, const struct domain_device *ddev,
340 const char *fmt, ...)
342 struct ata_port *ap = ddev->sata_dev.ap;
343 struct device *dev = &ddev->rphy->dev;
344 struct va_format vaf;
353 r = printk("%s" SAS_FMT "ata%u: %s: %pV",
354 level, ap->print_id, dev_name(dev), &vaf);
361 int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline)
363 struct sata_device *sata_dev = &dev->sata_dev;
364 int (*check_ready)(struct ata_link *link);
365 struct ata_port *ap = sata_dev->ap;
366 struct ata_link *link = &ap->link;
370 phy = sas_get_local_phy(dev);
371 if (scsi_is_sas_phy_local(phy))
372 check_ready = local_ata_check_ready;
374 check_ready = smp_ata_check_ready;
375 sas_put_local_phy(phy);
377 ret = ata_wait_after_reset(link, deadline, check_ready);
378 if (ret && ret != -EAGAIN)
379 sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
383 EXPORT_SYMBOL_GPL(sas_ata_wait_after_reset);
385 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
386 unsigned long deadline)
388 struct ata_port *ap = link->ap;
389 struct domain_device *dev = ap->private_data;
390 struct sas_internal *i = dev_to_sas_internal(dev);
393 ret = i->dft->lldd_I_T_nexus_reset(dev);
397 if (ret != TMF_RESP_FUNC_COMPLETE)
398 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
400 ret = sas_ata_wait_after_reset(dev, deadline);
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(scsi_cmd_to_rq(qc->scsicmd));
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)
793 struct scsi_cmnd *cmd, *n;
794 struct domain_device *eh_dev;
800 list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
801 struct domain_device *ddev = cmd_to_domain_dev(cmd);
803 if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
805 if (eh_dev && eh_dev != ddev)
808 list_move(&cmd->eh_entry, &sata_q);
811 if (!list_empty(&sata_q)) {
812 struct ata_port *ap = eh_dev->sata_dev.ap;
814 sas_ata_printk(KERN_DEBUG, eh_dev, "cmd error handler\n");
815 ata_scsi_cmd_error_handler(shost, ap, &sata_q);
817 * ata's error handler may leave the cmd on the list
818 * so make sure they don't remain on a stack list
819 * about to go out of scope.
821 * This looks strange, since the commands are
822 * now part of no list, but the next error
823 * action will be ata_port_error_handler()
824 * which takes no list and sweeps them up
825 * anyway from the ata tag array.
827 while (!list_empty(&sata_q))
828 list_del_init(sata_q.next);
833 void sas_ata_schedule_reset(struct domain_device *dev)
835 struct ata_eh_info *ehi;
839 if (!dev_is_sata(dev))
842 ap = dev->sata_dev.ap;
843 ehi = &ap->link.eh_info;
845 spin_lock_irqsave(ap->lock, flags);
846 ehi->err_mask |= AC_ERR_TIMEOUT;
847 ehi->action |= ATA_EH_RESET;
848 ata_port_schedule_eh(ap);
849 spin_unlock_irqrestore(ap->lock, flags);
851 EXPORT_SYMBOL_GPL(sas_ata_schedule_reset);
853 void sas_ata_wait_eh(struct domain_device *dev)
857 if (!dev_is_sata(dev))
860 ap = dev->sata_dev.ap;
861 ata_port_wait_eh(ap);
864 int sas_execute_ata_cmd(struct domain_device *device, u8 *fis, int force_phy_id)
866 struct sas_tmf_task tmf_task = {};
867 return sas_execute_tmf(device, fis, sizeof(struct host_to_dev_fis),
868 force_phy_id, &tmf_task);
870 EXPORT_SYMBOL_GPL(sas_execute_ata_cmd);