2 * Support for SATA devices on Serial Attached SCSI (SAS) controllers
4 * Copyright (C) 2006 IBM Corporation
6 * Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 #include <linux/scatterlist.h>
25 #include <linux/slab.h>
26 #include <linux/async.h>
27 #include <linux/export.h>
29 #include <scsi/sas_ata.h>
30 #include "sas_internal.h"
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_tcq.h>
34 #include <scsi/scsi.h>
35 #include <scsi/scsi_transport.h>
36 #include <scsi/scsi_transport_sas.h>
37 #include "../scsi_sas_internal.h"
38 #include "../scsi_transport_api.h"
39 #include <scsi/scsi_eh.h>
41 static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
43 /* Cheesy attempt to translate SAS errors into ATA. Hah! */
46 if (ts->resp == SAS_TASK_UNDELIVERED)
47 return AC_ERR_ATA_BUS;
49 /* ts->resp == SAS_TASK_COMPLETE */
50 /* task delivered, what happened afterwards? */
52 case SAS_DEV_NO_RESPONSE:
53 return AC_ERR_TIMEOUT;
58 return AC_ERR_ATA_BUS;
61 case SAS_DATA_UNDERRUN:
63 * Some programs that use the taskfile interface
64 * (smartctl in particular) can cause underrun
65 * problems. Ignore these errors, perhaps at our
70 case SAS_DATA_OVERRUN:
72 case SAS_DEVICE_UNKNOWN:
74 return AC_ERR_INVALID;
78 SAS_DPRINTK("%s: Saw error %d. What to do?\n",
82 case SAM_STAT_CHECK_CONDITION:
83 case SAS_ABORTED_TASK:
86 case SAS_PROTO_RESPONSE:
87 /* This means the ending_fis has the error
88 * value; return 0 here to collect it */
95 static void sas_ata_task_done(struct sas_task *task)
97 struct ata_queued_cmd *qc = task->uldd_task;
98 struct domain_device *dev = task->dev;
99 struct task_status_struct *stat = &task->task_status;
100 struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
101 struct sas_ha_struct *sas_ha = dev->port->ha;
102 enum ata_completion_errors ac;
104 struct ata_link *link;
107 spin_lock_irqsave(&dev->done_lock, flags);
108 if (test_bit(SAS_HA_FROZEN, &sas_ha->state))
110 else if (qc && qc->scsicmd)
111 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
112 spin_unlock_irqrestore(&dev->done_lock, flags);
114 /* check if libsas-eh got to the task before us */
119 goto qc_already_gone;
124 spin_lock_irqsave(ap->lock, flags);
125 /* check if we lost the race with libata/sas_ata_post_internal() */
126 if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) {
127 spin_unlock_irqrestore(ap->lock, flags);
129 goto qc_already_gone;
131 /* if eh is not involved and the port is frozen then the
132 * ata internal abort process has taken responsibility
139 if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD ||
140 ((stat->stat == SAM_STAT_CHECK_CONDITION &&
141 dev->sata_dev.command_set == ATAPI_COMMAND_SET))) {
142 ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
144 if (!link->sactive) {
145 qc->err_mask |= ac_err_mask(dev->sata_dev.tf.command);
147 link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.tf.command);
148 if (unlikely(link->eh_info.err_mask))
149 qc->flags |= ATA_QCFLAG_FAILED;
152 ac = sas_to_ata_err(stat);
154 SAS_DPRINTK("%s: SAS error %x\n", __func__,
156 /* We saw a SAS error. Send a vague error. */
157 if (!link->sactive) {
160 link->eh_info.err_mask |= AC_ERR_DEV;
161 qc->flags |= ATA_QCFLAG_FAILED;
164 dev->sata_dev.tf.feature = 0x04; /* status err */
165 dev->sata_dev.tf.command = ATA_ERR;
169 qc->lldd_task = NULL;
171 spin_unlock_irqrestore(ap->lock, flags);
174 list_del_init(&task->list);
178 static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
181 struct sas_task *task;
182 struct scatterlist *sg;
183 int ret = AC_ERR_SYSTEM;
184 unsigned int si, xfer = 0;
185 struct ata_port *ap = qc->ap;
186 struct domain_device *dev = ap->private_data;
187 struct sas_ha_struct *sas_ha = dev->port->ha;
188 struct Scsi_Host *host = sas_ha->core.shost;
189 struct sas_internal *i = to_sas_internal(host->transportt);
191 /* TODO: audit callers to ensure they are ready for qc_issue to
192 * unconditionally re-enable interrupts
194 local_irq_save(flags);
195 spin_unlock(ap->lock);
197 /* If the device fell off, no sense in issuing commands */
198 if (test_bit(SAS_DEV_GONE, &dev->state))
201 task = sas_alloc_task(GFP_ATOMIC);
205 task->task_proto = SAS_PROTOCOL_STP;
206 task->task_done = sas_ata_task_done;
208 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
209 qc->tf.command == ATA_CMD_FPDMA_READ) {
210 /* Need to zero out the tag libata assigned us */
214 ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis);
215 task->uldd_task = qc;
216 if (ata_is_atapi(qc->tf.protocol)) {
217 memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
218 task->total_xfer_len = qc->nbytes;
219 task->num_scatter = qc->n_elem;
221 for_each_sg(qc->sg, sg, qc->n_elem, si)
224 task->total_xfer_len = xfer;
225 task->num_scatter = si;
228 task->data_dir = qc->dma_dir;
229 task->scatter = qc->sg;
230 task->ata_task.retry_count = 1;
231 task->task_state_flags = SAS_TASK_STATE_PENDING;
232 qc->lldd_task = task;
234 switch (qc->tf.protocol) {
236 task->ata_task.use_ncq = 1;
240 task->ata_task.dma_xfer = 1;
245 ASSIGN_SAS_TASK(qc->scsicmd, task);
247 if (sas_ha->lldd_max_execute_num < 2)
248 ret = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC);
250 ret = sas_queue_up(task);
254 SAS_DPRINTK("lldd_execute_task returned: %d\n", ret);
257 ASSIGN_SAS_TASK(qc->scsicmd, NULL);
264 local_irq_restore(flags);
268 static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
270 struct domain_device *dev = qc->ap->private_data;
272 memcpy(&qc->result_tf, &dev->sata_dev.tf, sizeof(qc->result_tf));
276 static struct sas_internal *dev_to_sas_internal(struct domain_device *dev)
278 return to_sas_internal(dev->port->ha->core.shost->transportt);
281 static void sas_get_ata_command_set(struct domain_device *dev);
283 int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
285 if (phy->attached_tproto & SAS_PROTOCOL_STP)
286 dev->tproto = phy->attached_tproto;
287 if (phy->attached_sata_dev)
288 dev->tproto |= SATA_DEV;
290 if (phy->attached_dev_type == SATA_PENDING)
291 dev->dev_type = SATA_PENDING;
295 dev->dev_type = SATA_DEV;
296 res = sas_get_report_phy_sata(dev->parent, phy->phy_id,
297 &dev->sata_dev.rps_resp);
299 SAS_DPRINTK("report phy sata to %016llx:0x%x returned "
300 "0x%x\n", SAS_ADDR(dev->parent->sas_addr),
304 memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
305 sizeof(struct dev_to_host_fis));
306 /* TODO switch to ata_dev_classify() */
307 sas_get_ata_command_set(dev);
312 static int sas_ata_clear_pending(struct domain_device *dev, struct ex_phy *phy)
316 /* we weren't pending, so successfully end the reset sequence now */
317 if (dev->dev_type != SATA_PENDING)
320 /* hmmm, if this succeeds do we need to repost the domain_device to the
321 * lldd so it can pick up new parameters?
323 res = sas_get_ata_info(dev, phy);
325 return 0; /* retry */
330 static int smp_ata_check_ready(struct ata_link *link)
333 struct ata_port *ap = link->ap;
334 struct domain_device *dev = ap->private_data;
335 struct domain_device *ex_dev = dev->parent;
336 struct sas_phy *phy = sas_get_local_phy(dev);
337 struct ex_phy *ex_phy = &ex_dev->ex_dev.ex_phy[phy->number];
339 res = sas_ex_phy_discover(ex_dev, phy->number);
340 sas_put_local_phy(phy);
342 /* break the wait early if the expander is unreachable,
343 * otherwise keep polling
347 if (res != SMP_RESP_FUNC_ACC)
350 switch (ex_phy->attached_dev_type) {
354 if (ex_phy->attached_sata_dev)
355 return sas_ata_clear_pending(dev, ex_phy);
361 static int local_ata_check_ready(struct ata_link *link)
363 struct ata_port *ap = link->ap;
364 struct domain_device *dev = ap->private_data;
365 struct sas_internal *i = dev_to_sas_internal(dev);
367 if (i->dft->lldd_ata_check_ready)
368 return i->dft->lldd_ata_check_ready(dev);
370 /* lldd's that don't implement 'ready' checking get the
371 * old default behavior of not coordinating reset
372 * recovery with libata
378 static int sas_ata_printk(const char *level, const struct domain_device *ddev,
379 const char *fmt, ...)
381 struct ata_port *ap = ddev->sata_dev.ap;
382 struct device *dev = &ddev->rphy->dev;
383 struct va_format vaf;
392 r = printk("%ssas: ata%u: %s: %pV",
393 level, ap->print_id, dev_name(dev), &vaf);
400 static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
401 unsigned long deadline)
405 struct ata_port *ap = link->ap;
406 int (*check_ready)(struct ata_link *link);
407 struct domain_device *dev = ap->private_data;
408 struct sas_internal *i = dev_to_sas_internal(dev);
410 if (test_bit(SAS_DEV_GONE, &dev->state))
413 res = i->dft->lldd_I_T_nexus_reset(dev);
415 if (res != TMF_RESP_FUNC_COMPLETE)
416 sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
418 phy = sas_get_local_phy(dev);
419 if (scsi_is_sas_phy_local(phy))
420 check_ready = local_ata_check_ready;
422 check_ready = smp_ata_check_ready;
423 sas_put_local_phy(phy);
425 ret = ata_wait_after_reset(link, deadline, check_ready);
426 if (ret && ret != -EAGAIN)
427 sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
429 /* XXX: if the class changes during the reset the upper layer
430 * should be informed, if the device has gone away we assume
431 * libsas will eventually delete it
433 switch (dev->sata_dev.command_set) {
434 case ATA_COMMAND_SET:
435 *class = ATA_DEV_ATA;
437 case ATAPI_COMMAND_SET:
438 *class = ATA_DEV_ATAPI;
442 ap->cbl = ATA_CBL_SATA;
446 static int sas_ata_soft_reset(struct ata_link *link, unsigned int *class,
447 unsigned long deadline)
449 struct ata_port *ap = link->ap;
450 struct domain_device *dev = ap->private_data;
451 struct sas_internal *i = dev_to_sas_internal(dev);
452 int res = TMF_RESP_FUNC_FAILED;
455 if (i->dft->lldd_ata_soft_reset)
456 res = i->dft->lldd_ata_soft_reset(dev);
458 if (res != TMF_RESP_FUNC_COMPLETE) {
459 SAS_DPRINTK("%s: Unable to soft reset\n", __func__);
463 switch (dev->sata_dev.command_set) {
464 case ATA_COMMAND_SET:
465 SAS_DPRINTK("%s: Found ATA device.\n", __func__);
466 *class = ATA_DEV_ATA;
468 case ATAPI_COMMAND_SET:
469 SAS_DPRINTK("%s: Found ATAPI device.\n", __func__);
470 *class = ATA_DEV_ATAPI;
473 SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
474 __func__, dev->sata_dev.command_set);
475 *class = ATA_DEV_UNKNOWN;
479 ap->cbl = ATA_CBL_SATA;
484 * notify the lldd to forget the sas_task for this internal ata command
485 * that bypasses scsi-eh
487 static void sas_ata_internal_abort(struct sas_task *task)
489 struct sas_internal *si = dev_to_sas_internal(task->dev);
493 spin_lock_irqsave(&task->task_state_lock, flags);
494 if (task->task_state_flags & SAS_TASK_STATE_ABORTED ||
495 task->task_state_flags & SAS_TASK_STATE_DONE) {
496 spin_unlock_irqrestore(&task->task_state_lock, flags);
497 SAS_DPRINTK("%s: Task %p already finished.\n", __func__,
501 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
502 spin_unlock_irqrestore(&task->task_state_lock, flags);
504 res = si->dft->lldd_abort_task(task);
506 spin_lock_irqsave(&task->task_state_lock, flags);
507 if (task->task_state_flags & SAS_TASK_STATE_DONE ||
508 res == TMF_RESP_FUNC_COMPLETE) {
509 spin_unlock_irqrestore(&task->task_state_lock, flags);
513 /* XXX we are not prepared to deal with ->lldd_abort_task()
514 * failures. TODO: lldds need to unconditionally forget about
515 * aborted ata tasks, otherwise we (likely) leak the sas task
518 SAS_DPRINTK("%s: Task %p leaked.\n", __func__, task);
520 if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
521 task->task_state_flags &= ~SAS_TASK_STATE_ABORTED;
522 spin_unlock_irqrestore(&task->task_state_lock, flags);
526 list_del_init(&task->list);
530 static void sas_ata_post_internal(struct ata_queued_cmd *qc)
532 if (qc->flags & ATA_QCFLAG_FAILED)
533 qc->err_mask |= AC_ERR_OTHER;
537 * Find the sas_task and kill it. By this point, libata
538 * has decided to kill the qc and has frozen the port.
539 * In this state sas_ata_task_done() will no longer free
540 * the sas_task, so we need to notify the lldd (via
541 * ->lldd_abort_task) that the task is dead and free it
544 struct sas_task *task = qc->lldd_task;
546 qc->lldd_task = NULL;
549 task->uldd_task = NULL;
550 sas_ata_internal_abort(task);
555 static void sas_ata_set_dmamode(struct ata_port *ap, struct ata_device *ata_dev)
557 struct domain_device *dev = ap->private_data;
558 struct sas_internal *i = dev_to_sas_internal(dev);
560 if (i->dft->lldd_ata_set_dmamode)
561 i->dft->lldd_ata_set_dmamode(dev);
564 static struct ata_port_operations sas_sata_ops = {
565 .prereset = ata_std_prereset,
566 .softreset = sas_ata_soft_reset,
567 .hardreset = sas_ata_hard_reset,
568 .postreset = ata_std_postreset,
569 .error_handler = ata_std_error_handler,
570 .post_internal_cmd = sas_ata_post_internal,
571 .qc_defer = ata_std_qc_defer,
572 .qc_prep = ata_noop_qc_prep,
573 .qc_issue = sas_ata_qc_issue,
574 .qc_fill_rtf = sas_ata_qc_fill_rtf,
575 .port_start = ata_sas_port_start,
576 .port_stop = ata_sas_port_stop,
577 .set_dmamode = sas_ata_set_dmamode,
580 static struct ata_port_info sata_port_info = {
581 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ,
582 .pio_mask = ATA_PIO4,
583 .mwdma_mask = ATA_MWDMA2,
584 .udma_mask = ATA_UDMA6,
585 .port_ops = &sas_sata_ops
588 int sas_ata_init_host_and_port(struct domain_device *found_dev,
589 struct scsi_target *starget)
591 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
592 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
595 ata_host_init(&found_dev->sata_dev.ata_host,
597 sata_port_info.flags,
599 ap = ata_sas_port_alloc(&found_dev->sata_dev.ata_host,
603 SAS_DPRINTK("ata_sas_port_alloc failed.\n");
607 ap->private_data = found_dev;
608 ap->cbl = ATA_CBL_SATA;
609 ap->scsi_host = shost;
610 found_dev->sata_dev.ap = ap;
615 void sas_ata_task_abort(struct sas_task *task)
617 struct ata_queued_cmd *qc = task->uldd_task;
618 struct completion *waiting;
620 /* Bounce SCSI-initiated commands to the SCSI EH */
622 struct request_queue *q = qc->scsicmd->device->request_queue;
625 spin_lock_irqsave(q->queue_lock, flags);
626 blk_abort_request(qc->scsicmd->request);
627 spin_unlock_irqrestore(q->queue_lock, flags);
628 scsi_schedule_eh(qc->scsicmd->device->host);
632 /* Internal command, fake a timeout and complete. */
633 qc->flags &= ~ATA_QCFLAG_ACTIVE;
634 qc->flags |= ATA_QCFLAG_FAILED;
635 qc->err_mask |= AC_ERR_TIMEOUT;
636 waiting = qc->private_data;
640 static void sas_get_ata_command_set(struct domain_device *dev)
642 struct dev_to_host_fis *fis =
643 (struct dev_to_host_fis *) dev->frame_rcvd;
645 if (dev->dev_type == SATA_PENDING)
648 if ((fis->sector_count == 1 && /* ATA */
654 (fis->sector_count == 0 && /* CE-ATA (mATA) */
658 (fis->device & ~0x10) == 0))
660 dev->sata_dev.command_set = ATA_COMMAND_SET;
662 else if ((fis->interrupt_reason == 1 && /* ATAPI */
664 fis->byte_count_low == 0x14 &&
665 fis->byte_count_high == 0xEB &&
666 (fis->device & ~0x10) == 0))
668 dev->sata_dev.command_set = ATAPI_COMMAND_SET;
670 else if ((fis->sector_count == 1 && /* SEMB */
676 (fis->interrupt_reason == 1 && /* SATA PM */
678 fis->byte_count_low == 0x69 &&
679 fis->byte_count_high == 0x96 &&
680 (fis->device & ~0x10) == 0))
682 /* Treat it as a superset? */
683 dev->sata_dev.command_set = ATAPI_COMMAND_SET;
686 void sas_probe_sata(struct work_struct *work)
688 struct domain_device *dev, *n;
689 struct sas_discovery_event *ev =
690 container_of(work, struct sas_discovery_event, work);
691 struct asd_sas_port *port = ev->port;
693 clear_bit(DISCE_PROBE, &port->disc.pending);
695 list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) {
698 spin_lock_irq(&port->dev_list_lock);
699 list_add_tail(&dev->dev_list_node, &port->dev_list);
700 spin_unlock_irq(&port->dev_list_lock);
702 err = sas_rphy_add(dev->rphy);
705 SAS_DPRINTK("%s: for %s device %16llx returned %d\n",
706 __func__, dev->parent ? "exp-attached" :
708 SAS_ADDR(dev->sas_addr), err);
709 sas_unregister_dev(port, dev);
711 list_del_init(&dev->disco_list_node);
716 * sas_discover_sata -- discover an STP/SATA domain device
717 * @dev: pointer to struct domain_device of interest
719 * Devices directly attached to a HA port, have no parents. All other
720 * devices do, and should have their "parent" pointer set appropriately
721 * before calling this function.
723 int sas_discover_sata(struct domain_device *dev)
727 if (dev->dev_type == SATA_PM)
730 sas_get_ata_command_set(dev);
731 sas_fill_in_rphy(dev, dev->rphy);
733 res = sas_notify_lldd_dev_found(dev);
737 sas_discover_event(dev->port, DISCE_PROBE);
741 static void async_sas_ata_eh(void *data, async_cookie_t cookie)
743 struct domain_device *dev = data;
744 struct ata_port *ap = dev->sata_dev.ap;
745 struct sas_ha_struct *ha = dev->port->ha;
747 /* hold a reference over eh since we may be racing with final
748 * remove once all commands are completed
750 kref_get(&dev->kref);
751 sas_ata_printk(KERN_DEBUG, dev, "dev error handler\n");
752 ata_scsi_port_error_handler(ha->core.shost, ap);
756 void sas_ata_strategy_handler(struct Scsi_Host *shost)
758 struct scsi_device *sdev;
759 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
762 /* it's ok to defer revalidation events during ata eh, these
763 * disks are in one of three states:
764 * 1/ present for initial domain discovery, and these
765 * resets will cause bcn flutters
766 * 2/ hot removed, we'll discover that after eh fails
767 * 3/ hot added after initial discovery, lost the race, and need
768 * to catch the next train.
770 sas_disable_revalidation(sas_ha);
772 shost_for_each_device(sdev, shost) {
773 struct domain_device *ddev = sdev_to_domain_dev(sdev);
775 if (!dev_is_sata(ddev))
778 async_schedule_domain(async_sas_ata_eh, ddev, &async);
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);