2 * Aic94xx Task Management Functions
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
7 * This file is licensed under GPLv2.
9 * This file is part of the aic94xx driver.
11 * The aic94xx driver is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; version 2 of the
16 * The aic94xx driver is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with the aic94xx driver; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 #include <linux/spinlock.h>
29 #include "aic94xx_sas.h"
30 #include "aic94xx_hwi.h"
32 /* ---------- Internal enqueue ---------- */
34 static int asd_enqueue_internal(struct asd_ascb
*ascb
,
35 void (*tasklet_complete
)(struct asd_ascb
*,
36 struct done_list_struct
*),
37 void (*timed_out
)(unsigned long))
41 ascb
->tasklet_complete
= tasklet_complete
;
44 ascb
->timer
.data
= (unsigned long) ascb
;
45 ascb
->timer
.function
= timed_out
;
46 ascb
->timer
.expires
= jiffies
+ AIC94XX_SCB_TIMEOUT
;
48 add_timer(&ascb
->timer
);
50 res
= asd_post_ascb_list(ascb
->ha
, ascb
, 1);
52 del_timer(&ascb
->timer
);
56 /* ---------- CLEAR NEXUS ---------- */
58 struct tasklet_completion_status
{
65 #define DECLARE_TCS(tcs) \
66 struct tasklet_completion_status tcs = { \
74 static void asd_clear_nexus_tasklet_complete(struct asd_ascb
*ascb
,
75 struct done_list_struct
*dl
)
77 struct tasklet_completion_status
*tcs
= ascb
->uldd_task
;
78 ASD_DPRINTK("%s: here\n", __func__
);
79 if (!del_timer(&ascb
->timer
)) {
80 ASD_DPRINTK("%s: couldn't delete timer\n", __func__
);
83 ASD_DPRINTK("%s: opcode: 0x%x\n", __func__
, dl
->opcode
);
84 tcs
->dl_opcode
= dl
->opcode
;
85 complete(ascb
->completion
);
89 static void asd_clear_nexus_timedout(unsigned long data
)
91 struct asd_ascb
*ascb
= (void *)data
;
92 struct tasklet_completion_status
*tcs
= ascb
->uldd_task
;
94 ASD_DPRINTK("%s: here\n", __func__
);
95 tcs
->dl_opcode
= TMF_RESP_FUNC_FAILED
;
96 complete(ascb
->completion
);
99 #define CLEAR_NEXUS_PRE \
100 struct asd_ascb *ascb; \
103 DECLARE_COMPLETION_ONSTACK(completion); \
106 ASD_DPRINTK("%s: PRE\n", __func__); \
108 ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); \
112 ascb->completion = &completion; \
113 ascb->uldd_task = &tcs; \
115 scb->header.opcode = CLEAR_NEXUS
117 #define CLEAR_NEXUS_POST \
118 ASD_DPRINTK("%s: POST\n", __func__); \
119 res = asd_enqueue_internal(ascb, asd_clear_nexus_tasklet_complete, \
120 asd_clear_nexus_timedout); \
123 ASD_DPRINTK("%s: clear nexus posted, waiting...\n", __func__); \
124 wait_for_completion(&completion); \
125 res = tcs.dl_opcode; \
126 if (res == TC_NO_ERROR) \
127 res = TMF_RESP_FUNC_COMPLETE; \
130 asd_ascb_free(ascb); \
133 int asd_clear_nexus_ha(struct sas_ha_struct
*sas_ha
)
135 struct asd_ha_struct
*asd_ha
= sas_ha
->lldd_ha
;
138 scb
->clear_nexus
.nexus
= NEXUS_ADAPTER
;
142 int asd_clear_nexus_port(struct asd_sas_port
*port
)
144 struct asd_ha_struct
*asd_ha
= port
->ha
->lldd_ha
;
147 scb
->clear_nexus
.nexus
= NEXUS_PORT
;
148 scb
->clear_nexus
.conn_mask
= port
->phy_mask
;
152 enum clear_nexus_phase
{
158 static int asd_clear_nexus_I_T(struct domain_device
*dev
,
159 enum clear_nexus_phase phase
)
161 struct asd_ha_struct
*asd_ha
= dev
->port
->ha
->lldd_ha
;
164 scb
->clear_nexus
.nexus
= NEXUS_I_T
;
166 case NEXUS_PHASE_PRE
:
167 scb
->clear_nexus
.flags
= EXEC_Q
| SUSPEND_TX
;
169 case NEXUS_PHASE_POST
:
170 scb
->clear_nexus
.flags
= SEND_Q
| NOTINQ
;
172 case NEXUS_PHASE_RESUME
:
173 scb
->clear_nexus
.flags
= RESUME_TX
;
175 scb
->clear_nexus
.conn_handle
= cpu_to_le16((u16
)(unsigned long)
180 int asd_I_T_nexus_reset(struct domain_device
*dev
)
183 struct sas_phy
*phy
= sas_find_local_phy(dev
);
184 /* Standard mandates link reset for ATA (type 0) and
185 * hard reset for SSP (type 1) */
186 int reset_type
= (dev
->dev_type
== SATA_DEV
||
187 (dev
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
189 asd_clear_nexus_I_T(dev
, NEXUS_PHASE_PRE
);
190 /* send a hard reset */
191 ASD_DPRINTK("sending %s reset to %s\n",
192 reset_type
? "hard" : "soft", phy
->dev
.bus_id
);
193 res
= sas_phy_reset(phy
, reset_type
);
194 if (res
== TMF_RESP_FUNC_COMPLETE
) {
195 /* wait for the maximum settle time */
197 /* clear all outstanding commands (keep nexus suspended) */
198 asd_clear_nexus_I_T(dev
, NEXUS_PHASE_POST
);
200 for (i
= 0 ; i
< 3; i
++) {
201 tmp_res
= asd_clear_nexus_I_T(dev
, NEXUS_PHASE_RESUME
);
202 if (tmp_res
== TC_RESUME
)
207 /* This is a bit of a problem: the sequencer is still suspended
208 * and is refusing to resume. Hope it will resume on a bigger hammer
209 * or the disk is lost */
210 dev_printk(KERN_ERR
, &phy
->dev
,
211 "Failed to resume nexus after reset 0x%x\n", tmp_res
);
213 return TMF_RESP_FUNC_FAILED
;
216 static int asd_clear_nexus_I_T_L(struct domain_device
*dev
, u8
*lun
)
218 struct asd_ha_struct
*asd_ha
= dev
->port
->ha
->lldd_ha
;
221 scb
->clear_nexus
.nexus
= NEXUS_I_T_L
;
222 scb
->clear_nexus
.flags
= SEND_Q
| EXEC_Q
| NOTINQ
;
223 memcpy(scb
->clear_nexus
.ssp_task
.lun
, lun
, 8);
224 scb
->clear_nexus
.conn_handle
= cpu_to_le16((u16
)(unsigned long)
229 static int asd_clear_nexus_tag(struct sas_task
*task
)
231 struct asd_ha_struct
*asd_ha
= task
->dev
->port
->ha
->lldd_ha
;
232 struct asd_ascb
*tascb
= task
->lldd_task
;
235 scb
->clear_nexus
.nexus
= NEXUS_TAG
;
236 memcpy(scb
->clear_nexus
.ssp_task
.lun
, task
->ssp_task
.LUN
, 8);
237 scb
->clear_nexus
.ssp_task
.tag
= tascb
->tag
;
238 if (task
->dev
->tproto
)
239 scb
->clear_nexus
.conn_handle
= cpu_to_le16((u16
)(unsigned long)
240 task
->dev
->lldd_dev
);
244 static int asd_clear_nexus_index(struct sas_task
*task
)
246 struct asd_ha_struct
*asd_ha
= task
->dev
->port
->ha
->lldd_ha
;
247 struct asd_ascb
*tascb
= task
->lldd_task
;
250 scb
->clear_nexus
.nexus
= NEXUS_TRANS_CX
;
251 if (task
->dev
->tproto
)
252 scb
->clear_nexus
.conn_handle
= cpu_to_le16((u16
)(unsigned long)
253 task
->dev
->lldd_dev
);
254 scb
->clear_nexus
.index
= cpu_to_le16(tascb
->tc_index
);
258 /* ---------- TMFs ---------- */
260 static void asd_tmf_timedout(unsigned long data
)
262 struct asd_ascb
*ascb
= (void *) data
;
263 struct tasklet_completion_status
*tcs
= ascb
->uldd_task
;
265 ASD_DPRINTK("tmf timed out\n");
266 tcs
->tmf_state
= TMF_RESP_FUNC_FAILED
;
267 complete(ascb
->completion
);
270 static int asd_get_tmf_resp_tasklet(struct asd_ascb
*ascb
,
271 struct done_list_struct
*dl
)
273 struct asd_ha_struct
*asd_ha
= ascb
->ha
;
275 struct tc_resp_sb_struct
{
279 } __attribute__ ((packed
)) *resp_sb
= (void *) dl
->status_block
;
281 int edb_id
= ((resp_sb
->flags
& 0x70) >> 4)-1;
282 struct asd_ascb
*escb
;
283 struct asd_dma_tok
*edb
;
284 struct ssp_frame_hdr
*fh
;
285 struct ssp_response_iu
*ru
;
286 int res
= TMF_RESP_FUNC_FAILED
;
288 ASD_DPRINTK("tmf resp tasklet\n");
290 spin_lock_irqsave(&asd_ha
->seq
.tc_index_lock
, flags
);
291 escb
= asd_tc_index_find(&asd_ha
->seq
,
292 (int)le16_to_cpu(resp_sb
->index_escb
));
293 spin_unlock_irqrestore(&asd_ha
->seq
.tc_index_lock
, flags
);
296 ASD_DPRINTK("Uh-oh! No escb for this dl?!\n");
300 edb
= asd_ha
->seq
.edb_arr
[edb_id
+ escb
->edb_index
];
301 ascb
->tag
= *(__be16
*)(edb
->vaddr
+4);
302 fh
= edb
->vaddr
+ 16;
303 ru
= edb
->vaddr
+ 16 + sizeof(*fh
);
305 if (ru
->datapres
== 1) /* Response data present */
306 res
= ru
->resp_data
[3];
312 asd_invalidate_edb(escb
, edb_id
);
316 static void asd_tmf_tasklet_complete(struct asd_ascb
*ascb
,
317 struct done_list_struct
*dl
)
319 struct tasklet_completion_status
*tcs
;
321 if (!del_timer(&ascb
->timer
))
324 tcs
= ascb
->uldd_task
;
325 ASD_DPRINTK("tmf tasklet complete\n");
327 tcs
->dl_opcode
= dl
->opcode
;
329 if (dl
->opcode
== TC_SSP_RESP
) {
330 tcs
->tmf_state
= asd_get_tmf_resp_tasklet(ascb
, dl
);
331 tcs
->tag_valid
= ascb
->tag_valid
;
332 tcs
->tag
= ascb
->tag
;
335 complete(ascb
->completion
);
339 static int asd_clear_nexus(struct sas_task
*task
)
341 int res
= TMF_RESP_FUNC_FAILED
;
343 struct asd_ascb
*tascb
= task
->lldd_task
;
344 DECLARE_COMPLETION_ONSTACK(completion
);
347 tascb
->completion
= &completion
;
349 ASD_DPRINTK("task not done, clearing nexus\n");
350 if (tascb
->tag_valid
)
351 res
= asd_clear_nexus_tag(task
);
353 res
= asd_clear_nexus_index(task
);
354 leftover
= wait_for_completion_timeout(&completion
,
355 AIC94XX_SCB_TIMEOUT
);
356 tascb
->completion
= NULL
;
357 ASD_DPRINTK("came back from clear nexus\n");
358 spin_lock_irqsave(&task
->task_state_lock
, flags
);
360 res
= TMF_RESP_FUNC_FAILED
;
361 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
)
362 res
= TMF_RESP_FUNC_COMPLETE
;
363 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
369 * asd_abort_task -- ABORT TASK TMF
370 * @task: the task to be aborted
372 * Before calling ABORT TASK the task state flags should be ORed with
373 * SAS_TASK_STATE_ABORTED (unless SAS_TASK_STATE_DONE is set) under
374 * the task_state_lock IRQ spinlock, then ABORT TASK *must* be called.
376 * Implements the ABORT TASK TMF, I_T_L_Q nexus.
377 * Returns: SAS TMF responses (see sas_task.h),
381 * When ABORT TASK returns, the caller of ABORT TASK checks first the
382 * task->task_state_flags, and then the return value of ABORT TASK.
384 * If the task has task state bit SAS_TASK_STATE_DONE set, then the
385 * task was completed successfully prior to it being aborted. The
386 * caller of ABORT TASK has responsibility to call task->task_done()
387 * xor free the task, depending on their framework. The return code
388 * is TMF_RESP_FUNC_FAILED in this case.
390 * Else the SAS_TASK_STATE_DONE bit is not set,
391 * If the return code is TMF_RESP_FUNC_COMPLETE, then
392 * the task was aborted successfully. The caller of
393 * ABORT TASK has responsibility to call task->task_done()
394 * to finish the task, xor free the task depending on their
397 * the ABORT TASK returned some kind of error. The task
398 * was _not_ cancelled. Nothing can be assumed.
399 * The caller of ABORT TASK may wish to retry.
401 int asd_abort_task(struct sas_task
*task
)
403 struct asd_ascb
*tascb
= task
->lldd_task
;
404 struct asd_ha_struct
*asd_ha
= tascb
->ha
;
407 struct asd_ascb
*ascb
= NULL
;
411 DECLARE_COMPLETION_ONSTACK(completion
);
412 DECLARE_COMPLETION_ONSTACK(tascb_completion
);
414 tascb
->completion
= &tascb_completion
;
416 spin_lock_irqsave(&task
->task_state_lock
, flags
);
417 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
418 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
419 res
= TMF_RESP_FUNC_COMPLETE
;
420 ASD_DPRINTK("%s: task 0x%p done\n", __func__
, task
);
423 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
425 ascb
= asd_ascb_alloc_list(asd_ha
, &res
, GFP_KERNEL
);
429 ascb
->uldd_task
= &tcs
;
430 ascb
->completion
= &completion
;
432 scb
->header
.opcode
= SCB_ABORT_TASK
;
434 switch (task
->task_proto
) {
435 case SAS_PROTOCOL_SATA
:
436 case SAS_PROTOCOL_STP
:
437 scb
->abort_task
.proto_conn_rate
= (1 << 5); /* STP */
439 case SAS_PROTOCOL_SSP
:
440 scb
->abort_task
.proto_conn_rate
= (1 << 4); /* SSP */
441 scb
->abort_task
.proto_conn_rate
|= task
->dev
->linkrate
;
443 case SAS_PROTOCOL_SMP
:
449 if (task
->task_proto
== SAS_PROTOCOL_SSP
) {
450 scb
->abort_task
.ssp_frame
.frame_type
= SSP_TASK
;
451 memcpy(scb
->abort_task
.ssp_frame
.hashed_dest_addr
,
452 task
->dev
->hashed_sas_addr
, HASHED_SAS_ADDR_SIZE
);
453 memcpy(scb
->abort_task
.ssp_frame
.hashed_src_addr
,
454 task
->dev
->port
->ha
->hashed_sas_addr
,
455 HASHED_SAS_ADDR_SIZE
);
456 scb
->abort_task
.ssp_frame
.tptt
= cpu_to_be16(0xFFFF);
458 memcpy(scb
->abort_task
.ssp_task
.lun
, task
->ssp_task
.LUN
, 8);
459 scb
->abort_task
.ssp_task
.tmf
= TMF_ABORT_TASK
;
460 scb
->abort_task
.ssp_task
.tag
= cpu_to_be16(0xFFFF);
463 scb
->abort_task
.sister_scb
= cpu_to_le16(0xFFFF);
464 scb
->abort_task
.conn_handle
= cpu_to_le16(
465 (u16
)(unsigned long)task
->dev
->lldd_dev
);
466 scb
->abort_task
.retry_count
= 1;
467 scb
->abort_task
.index
= cpu_to_le16((u16
)tascb
->tc_index
);
468 scb
->abort_task
.itnl_to
= cpu_to_le16(ITNL_TIMEOUT_CONST
);
470 res
= asd_enqueue_internal(ascb
, asd_tmf_tasklet_complete
,
474 wait_for_completion(&completion
);
475 ASD_DPRINTK("tmf came back\n");
477 tascb
->tag
= tcs
.tag
;
478 tascb
->tag_valid
= tcs
.tag_valid
;
480 spin_lock_irqsave(&task
->task_state_lock
, flags
);
481 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
482 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
483 res
= TMF_RESP_FUNC_COMPLETE
;
484 ASD_DPRINTK("%s: task 0x%p done\n", __func__
, task
);
487 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
489 if (tcs
.dl_opcode
== TC_SSP_RESP
) {
490 /* The task to be aborted has been sent to the device.
491 * We got a Response IU for the ABORT TASK TMF. */
492 if (tcs
.tmf_state
== TMF_RESP_FUNC_COMPLETE
)
493 res
= asd_clear_nexus(task
);
496 } else if (tcs
.dl_opcode
== TC_NO_ERROR
&&
497 tcs
.tmf_state
== TMF_RESP_FUNC_FAILED
) {
499 res
= TMF_RESP_FUNC_FAILED
;
501 /* In the following we assume that the managing layer
502 * will _never_ make a mistake, when issuing ABORT
505 switch (tcs
.dl_opcode
) {
507 res
= asd_clear_nexus(task
);
511 /* The task hasn't been sent to the device xor
512 * we never got a (sane) Response IU for the
516 res
= TMF_RESP_INVALID_FRAME
;
518 case TF_TMF_TASK_DONE
: /* done but not reported yet */
519 res
= TMF_RESP_FUNC_FAILED
;
521 wait_for_completion_timeout(&tascb_completion
,
522 AIC94XX_SCB_TIMEOUT
);
523 spin_lock_irqsave(&task
->task_state_lock
, flags
);
525 res
= TMF_RESP_FUNC_FAILED
;
526 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
)
527 res
= TMF_RESP_FUNC_COMPLETE
;
528 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
531 case TF_TMF_TAG_FREE
: /* the tag is in the free list */
532 case TF_TMF_NO_CONN_HANDLE
: /* no such device */
533 res
= TMF_RESP_FUNC_COMPLETE
;
535 case TF_TMF_NO_CTX
: /* not in seq, or proto != SSP */
536 res
= TMF_RESP_FUNC_ESUPP
;
541 tascb
->completion
= NULL
;
542 if (res
== TMF_RESP_FUNC_COMPLETE
) {
543 task
->lldd_task
= NULL
;
545 asd_ascb_free(tascb
);
547 ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task
, res
);
552 ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task
, res
);
557 * asd_initiate_ssp_tmf -- send a TMF to an I_T_L or I_T_L_Q nexus
558 * @dev: pointer to struct domain_device of interest
559 * @lun: pointer to u8[8] which is the LUN
560 * @tmf: the TMF to be performed (see sas_task.h or the SAS spec)
561 * @index: the transaction context of the task to be queried if QT TMF
563 * This function is used to send ABORT TASK SET, CLEAR ACA,
564 * CLEAR TASK SET, LU RESET and QUERY TASK TMFs.
566 * No SCBs should be queued to the I_T_L nexus when this SCB is
569 * Returns: TMF response code (see sas_task.h or the SAS spec)
571 static int asd_initiate_ssp_tmf(struct domain_device
*dev
, u8
*lun
,
574 struct asd_ha_struct
*asd_ha
= dev
->port
->ha
->lldd_ha
;
575 struct asd_ascb
*ascb
;
578 DECLARE_COMPLETION_ONSTACK(completion
);
581 if (!(dev
->tproto
& SAS_PROTOCOL_SSP
))
582 return TMF_RESP_FUNC_ESUPP
;
584 ascb
= asd_ascb_alloc_list(asd_ha
, &res
, GFP_KERNEL
);
588 ascb
->completion
= &completion
;
589 ascb
->uldd_task
= &tcs
;
592 if (tmf
== TMF_QUERY_TASK
)
593 scb
->header
.opcode
= QUERY_SSP_TASK
;
595 scb
->header
.opcode
= INITIATE_SSP_TMF
;
597 scb
->ssp_tmf
.proto_conn_rate
= (1 << 4); /* SSP */
598 scb
->ssp_tmf
.proto_conn_rate
|= dev
->linkrate
;
599 /* SSP frame header */
600 scb
->ssp_tmf
.ssp_frame
.frame_type
= SSP_TASK
;
601 memcpy(scb
->ssp_tmf
.ssp_frame
.hashed_dest_addr
,
602 dev
->hashed_sas_addr
, HASHED_SAS_ADDR_SIZE
);
603 memcpy(scb
->ssp_tmf
.ssp_frame
.hashed_src_addr
,
604 dev
->port
->ha
->hashed_sas_addr
, HASHED_SAS_ADDR_SIZE
);
605 scb
->ssp_tmf
.ssp_frame
.tptt
= cpu_to_be16(0xFFFF);
607 memcpy(scb
->ssp_tmf
.ssp_task
.lun
, lun
, 8);
608 scb
->ssp_tmf
.ssp_task
.tmf
= tmf
;
610 scb
->ssp_tmf
.sister_scb
= cpu_to_le16(0xFFFF);
611 scb
->ssp_tmf
.conn_handle
= cpu_to_le16((u16
)(unsigned long)
613 scb
->ssp_tmf
.retry_count
= 1;
614 scb
->ssp_tmf
.itnl_to
= cpu_to_le16(ITNL_TIMEOUT_CONST
);
615 if (tmf
== TMF_QUERY_TASK
)
616 scb
->ssp_tmf
.index
= cpu_to_le16(index
);
618 res
= asd_enqueue_internal(ascb
, asd_tmf_tasklet_complete
,
622 wait_for_completion(&completion
);
624 switch (tcs
.dl_opcode
) {
626 res
= TMF_RESP_FUNC_COMPLETE
;
629 res
= TMF_RESP_INVALID_FRAME
;
631 case TF_TMF_TASK_DONE
:
632 res
= TMF_RESP_FUNC_FAILED
;
635 case TF_TMF_TAG_FREE
: /* the tag is in the free list */
636 case TF_TMF_NO_CONN_HANDLE
: /* no such device */
637 res
= TMF_RESP_FUNC_COMPLETE
;
639 case TF_TMF_NO_CTX
: /* not in seq, or proto != SSP */
640 res
= TMF_RESP_FUNC_ESUPP
;
643 /* Allow TMF response codes to propagate upwards */
653 int asd_abort_task_set(struct domain_device
*dev
, u8
*lun
)
655 int res
= asd_initiate_ssp_tmf(dev
, lun
, TMF_ABORT_TASK_SET
, 0);
657 if (res
== TMF_RESP_FUNC_COMPLETE
)
658 asd_clear_nexus_I_T_L(dev
, lun
);
662 int asd_clear_aca(struct domain_device
*dev
, u8
*lun
)
664 int res
= asd_initiate_ssp_tmf(dev
, lun
, TMF_CLEAR_ACA
, 0);
666 if (res
== TMF_RESP_FUNC_COMPLETE
)
667 asd_clear_nexus_I_T_L(dev
, lun
);
671 int asd_clear_task_set(struct domain_device
*dev
, u8
*lun
)
673 int res
= asd_initiate_ssp_tmf(dev
, lun
, TMF_CLEAR_TASK_SET
, 0);
675 if (res
== TMF_RESP_FUNC_COMPLETE
)
676 asd_clear_nexus_I_T_L(dev
, lun
);
680 int asd_lu_reset(struct domain_device
*dev
, u8
*lun
)
682 int res
= asd_initiate_ssp_tmf(dev
, lun
, TMF_LU_RESET
, 0);
684 if (res
== TMF_RESP_FUNC_COMPLETE
)
685 asd_clear_nexus_I_T_L(dev
, lun
);
690 * asd_query_task -- send a QUERY TASK TMF to an I_T_L_Q nexus
691 * task: pointer to sas_task struct of interest
693 * Returns: TMF_RESP_FUNC_COMPLETE if the task is not in the task set,
694 * or TMF_RESP_FUNC_SUCC if the task is in the task set.
696 * Normally the management layer sets the task to aborted state,
697 * and then calls query task and then abort task.
699 int asd_query_task(struct sas_task
*task
)
701 struct asd_ascb
*ascb
= task
->lldd_task
;
705 index
= ascb
->tc_index
;
706 return asd_initiate_ssp_tmf(task
->dev
, task
->ssp_task
.LUN
,
707 TMF_QUERY_TASK
, index
);
709 return TMF_RESP_FUNC_COMPLETE
;