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2908d778 JB |
1 | /* |
2 | * Serial Attached SCSI (SAS) class SCSI Host glue. | |
3 | * | |
4 | * Copyright (C) 2005 Adaptec, Inc. All rights reserved. | |
5 | * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com> | |
6 | * | |
7 | * This file is licensed under GPLv2. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of the | |
12 | * License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
24 | */ | |
25 | ||
d7a54e30 CH |
26 | #include <linux/kthread.h> |
27 | ||
2908d778 JB |
28 | #include "sas_internal.h" |
29 | ||
30 | #include <scsi/scsi_host.h> | |
31 | #include <scsi/scsi_device.h> | |
32 | #include <scsi/scsi_tcq.h> | |
33 | #include <scsi/scsi.h> | |
f456393e | 34 | #include <scsi/scsi_eh.h> |
2908d778 JB |
35 | #include <scsi/scsi_transport.h> |
36 | #include <scsi/scsi_transport_sas.h> | |
338ec570 | 37 | #include <scsi/sas_ata.h> |
2908d778 | 38 | #include "../scsi_sas_internal.h" |
79a5eb60 | 39 | #include "../scsi_transport_api.h" |
ad689233 | 40 | #include "../scsi_priv.h" |
2908d778 JB |
41 | |
42 | #include <linux/err.h> | |
43 | #include <linux/blkdev.h> | |
83144186 | 44 | #include <linux/freezer.h> |
2908d778 | 45 | #include <linux/scatterlist.h> |
fa1c1e8f | 46 | #include <linux/libata.h> |
2908d778 JB |
47 | |
48 | /* ---------- SCSI Host glue ---------- */ | |
49 | ||
2908d778 JB |
50 | static void sas_scsi_task_done(struct sas_task *task) |
51 | { | |
52 | struct task_status_struct *ts = &task->task_status; | |
53 | struct scsi_cmnd *sc = task->uldd_task; | |
f456393e | 54 | struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(sc->device->host); |
2908d778 JB |
55 | unsigned ts_flags = task->task_state_flags; |
56 | int hs = 0, stat = 0; | |
57 | ||
58 | if (unlikely(!sc)) { | |
59 | SAS_DPRINTK("task_done called with non existing SCSI cmnd!\n"); | |
60 | list_del_init(&task->list); | |
61 | sas_free_task(task); | |
62 | return; | |
63 | } | |
64 | ||
65 | if (ts->resp == SAS_TASK_UNDELIVERED) { | |
66 | /* transport error */ | |
67 | hs = DID_NO_CONNECT; | |
68 | } else { /* ts->resp == SAS_TASK_COMPLETE */ | |
69 | /* task delivered, what happened afterwards? */ | |
70 | switch (ts->stat) { | |
71 | case SAS_DEV_NO_RESPONSE: | |
72 | case SAS_INTERRUPTED: | |
73 | case SAS_PHY_DOWN: | |
74 | case SAS_NAK_R_ERR: | |
75 | case SAS_OPEN_TO: | |
76 | hs = DID_NO_CONNECT; | |
77 | break; | |
78 | case SAS_DATA_UNDERRUN: | |
c13e5566 FT |
79 | scsi_set_resid(sc, ts->residual); |
80 | if (scsi_bufflen(sc) - scsi_get_resid(sc) < sc->underflow) | |
2908d778 JB |
81 | hs = DID_ERROR; |
82 | break; | |
83 | case SAS_DATA_OVERRUN: | |
84 | hs = DID_ERROR; | |
85 | break; | |
86 | case SAS_QUEUE_FULL: | |
87 | hs = DID_SOFT_ERROR; /* retry */ | |
88 | break; | |
89 | case SAS_DEVICE_UNKNOWN: | |
90 | hs = DID_BAD_TARGET; | |
91 | break; | |
92 | case SAS_SG_ERR: | |
93 | hs = DID_PARITY; | |
94 | break; | |
95 | case SAS_OPEN_REJECT: | |
96 | if (ts->open_rej_reason == SAS_OREJ_RSVD_RETRY) | |
97 | hs = DID_SOFT_ERROR; /* retry */ | |
98 | else | |
99 | hs = DID_ERROR; | |
100 | break; | |
101 | case SAS_PROTO_RESPONSE: | |
102 | SAS_DPRINTK("LLDD:%s sent SAS_PROTO_RESP for an SSP " | |
103 | "task; please report this\n", | |
104 | task->dev->port->ha->sas_ha_name); | |
105 | break; | |
106 | case SAS_ABORTED_TASK: | |
107 | hs = DID_ABORT; | |
108 | break; | |
109 | case SAM_CHECK_COND: | |
110 | memcpy(sc->sense_buffer, ts->buf, | |
111 | max(SCSI_SENSE_BUFFERSIZE, ts->buf_valid_size)); | |
112 | stat = SAM_CHECK_COND; | |
113 | break; | |
114 | default: | |
115 | stat = ts->stat; | |
116 | break; | |
117 | } | |
118 | } | |
119 | ASSIGN_SAS_TASK(sc, NULL); | |
120 | sc->result = (hs << 16) | stat; | |
121 | list_del_init(&task->list); | |
122 | sas_free_task(task); | |
123 | /* This is very ugly but this is how SCSI Core works. */ | |
124 | if (ts_flags & SAS_TASK_STATE_ABORTED) | |
f456393e | 125 | scsi_eh_finish_cmd(sc, &sas_ha->eh_done_q); |
2908d778 JB |
126 | else |
127 | sc->scsi_done(sc); | |
128 | } | |
129 | ||
130 | static enum task_attribute sas_scsi_get_task_attr(struct scsi_cmnd *cmd) | |
131 | { | |
132 | enum task_attribute ta = TASK_ATTR_SIMPLE; | |
133 | if (cmd->request && blk_rq_tagged(cmd->request)) { | |
134 | if (cmd->device->ordered_tags && | |
1bdfd554 | 135 | (cmd->request->cmd_flags & REQ_HARDBARRIER)) |
63bb1bf0 | 136 | ta = TASK_ATTR_ORDERED; |
2908d778 JB |
137 | } |
138 | return ta; | |
139 | } | |
140 | ||
141 | static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, | |
142 | struct domain_device *dev, | |
3cc27547 | 143 | gfp_t gfp_flags) |
2908d778 JB |
144 | { |
145 | struct sas_task *task = sas_alloc_task(gfp_flags); | |
146 | struct scsi_lun lun; | |
147 | ||
148 | if (!task) | |
149 | return NULL; | |
150 | ||
151 | *(u32 *)cmd->sense_buffer = 0; | |
152 | task->uldd_task = cmd; | |
153 | ASSIGN_SAS_TASK(cmd, task); | |
154 | ||
155 | task->dev = dev; | |
156 | task->task_proto = task->dev->tproto; /* BUG_ON(!SSP) */ | |
157 | ||
158 | task->ssp_task.retry_count = 1; | |
159 | int_to_scsilun(cmd->device->lun, &lun); | |
160 | memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8); | |
161 | task->ssp_task.task_attr = sas_scsi_get_task_attr(cmd); | |
162 | memcpy(task->ssp_task.cdb, cmd->cmnd, 16); | |
163 | ||
c13e5566 FT |
164 | task->scatter = scsi_sglist(cmd); |
165 | task->num_scatter = scsi_sg_count(cmd); | |
166 | task->total_xfer_len = scsi_bufflen(cmd); | |
2908d778 JB |
167 | task->data_dir = cmd->sc_data_direction; |
168 | ||
169 | task->task_done = sas_scsi_task_done; | |
170 | ||
171 | return task; | |
172 | } | |
173 | ||
338ec570 | 174 | int sas_queue_up(struct sas_task *task) |
2908d778 JB |
175 | { |
176 | struct sas_ha_struct *sas_ha = task->dev->port->ha; | |
177 | struct scsi_core *core = &sas_ha->core; | |
178 | unsigned long flags; | |
179 | LIST_HEAD(list); | |
180 | ||
181 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
182 | if (sas_ha->lldd_queue_size < core->task_queue_size + 1) { | |
183 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
184 | return -SAS_QUEUE_FULL; | |
185 | } | |
186 | list_add_tail(&task->list, &core->task_queue); | |
187 | core->task_queue_size += 1; | |
188 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
d7a54e30 | 189 | wake_up_process(core->queue_thread); |
2908d778 JB |
190 | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /** | |
195 | * sas_queuecommand -- Enqueue a command for processing | |
196 | * @parameters: See SCSI Core documentation | |
197 | * | |
198 | * Note: XXX: Remove the host unlock/lock pair when SCSI Core can | |
199 | * call us without holding an IRQ spinlock... | |
200 | */ | |
201 | int sas_queuecommand(struct scsi_cmnd *cmd, | |
202 | void (*scsi_done)(struct scsi_cmnd *)) | |
203 | { | |
204 | int res = 0; | |
205 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
206 | struct Scsi_Host *host = cmd->device->host; | |
207 | struct sas_internal *i = to_sas_internal(host->transportt); | |
208 | ||
209 | spin_unlock_irq(host->host_lock); | |
210 | ||
211 | { | |
212 | struct sas_ha_struct *sas_ha = dev->port->ha; | |
213 | struct sas_task *task; | |
214 | ||
fa1c1e8f | 215 | if (dev_is_sata(dev)) { |
3eb7a51a DW |
216 | unsigned long flags; |
217 | ||
218 | spin_lock_irqsave(dev->sata_dev.ap->lock, flags); | |
fa1c1e8f DW |
219 | res = ata_sas_queuecmd(cmd, scsi_done, |
220 | dev->sata_dev.ap); | |
3eb7a51a | 221 | spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags); |
fa1c1e8f DW |
222 | goto out; |
223 | } | |
224 | ||
2908d778 JB |
225 | res = -ENOMEM; |
226 | task = sas_create_task(cmd, dev, GFP_ATOMIC); | |
227 | if (!task) | |
228 | goto out; | |
229 | ||
230 | cmd->scsi_done = scsi_done; | |
231 | /* Queue up, Direct Mode or Task Collector Mode. */ | |
232 | if (sas_ha->lldd_max_execute_num < 2) | |
233 | res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC); | |
234 | else | |
235 | res = sas_queue_up(task); | |
236 | ||
237 | /* Examine */ | |
238 | if (res) { | |
239 | SAS_DPRINTK("lldd_execute_task returned: %d\n", res); | |
240 | ASSIGN_SAS_TASK(cmd, NULL); | |
241 | sas_free_task(task); | |
242 | if (res == -SAS_QUEUE_FULL) { | |
243 | cmd->result = DID_SOFT_ERROR << 16; /* retry */ | |
244 | res = 0; | |
245 | scsi_done(cmd); | |
246 | } | |
247 | goto out; | |
248 | } | |
249 | } | |
250 | out: | |
251 | spin_lock_irq(host->host_lock); | |
252 | return res; | |
253 | } | |
254 | ||
255 | static void sas_scsi_clear_queue_lu(struct list_head *error_q, struct scsi_cmnd *my_cmd) | |
256 | { | |
257 | struct scsi_cmnd *cmd, *n; | |
258 | ||
259 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
260 | if (cmd == my_cmd) | |
261 | list_del_init(&cmd->eh_entry); | |
262 | } | |
263 | } | |
264 | ||
265 | static void sas_scsi_clear_queue_I_T(struct list_head *error_q, | |
266 | struct domain_device *dev) | |
267 | { | |
268 | struct scsi_cmnd *cmd, *n; | |
269 | ||
270 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
271 | struct domain_device *x = cmd_to_domain_dev(cmd); | |
272 | ||
273 | if (x == dev) | |
274 | list_del_init(&cmd->eh_entry); | |
275 | } | |
276 | } | |
277 | ||
278 | static void sas_scsi_clear_queue_port(struct list_head *error_q, | |
279 | struct asd_sas_port *port) | |
280 | { | |
281 | struct scsi_cmnd *cmd, *n; | |
282 | ||
283 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
284 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
285 | struct asd_sas_port *x = dev->port; | |
286 | ||
287 | if (x == port) | |
288 | list_del_init(&cmd->eh_entry); | |
289 | } | |
290 | } | |
291 | ||
292 | enum task_disposition { | |
293 | TASK_IS_DONE, | |
294 | TASK_IS_ABORTED, | |
295 | TASK_IS_AT_LU, | |
296 | TASK_IS_NOT_AT_LU, | |
02cd743b | 297 | TASK_ABORT_FAILED, |
2908d778 JB |
298 | }; |
299 | ||
300 | static enum task_disposition sas_scsi_find_task(struct sas_task *task) | |
301 | { | |
302 | struct sas_ha_struct *ha = task->dev->port->ha; | |
303 | unsigned long flags; | |
304 | int i, res; | |
305 | struct sas_internal *si = | |
306 | to_sas_internal(task->dev->port->ha->core.shost->transportt); | |
307 | ||
308 | if (ha->lldd_max_execute_num > 1) { | |
309 | struct scsi_core *core = &ha->core; | |
310 | struct sas_task *t, *n; | |
311 | ||
312 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
313 | list_for_each_entry_safe(t, n, &core->task_queue, list) { | |
314 | if (task == t) { | |
315 | list_del_init(&t->list); | |
316 | spin_unlock_irqrestore(&core->task_queue_lock, | |
317 | flags); | |
318 | SAS_DPRINTK("%s: task 0x%p aborted from " | |
319 | "task_queue\n", | |
320 | __FUNCTION__, task); | |
321 | return TASK_IS_ABORTED; | |
322 | } | |
323 | } | |
324 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
325 | } | |
326 | ||
327 | for (i = 0; i < 5; i++) { | |
328 | SAS_DPRINTK("%s: aborting task 0x%p\n", __FUNCTION__, task); | |
329 | res = si->dft->lldd_abort_task(task); | |
330 | ||
331 | spin_lock_irqsave(&task->task_state_lock, flags); | |
332 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
333 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
334 | SAS_DPRINTK("%s: task 0x%p is done\n", __FUNCTION__, | |
335 | task); | |
336 | return TASK_IS_DONE; | |
337 | } | |
338 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
339 | ||
340 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
341 | SAS_DPRINTK("%s: task 0x%p is aborted\n", | |
342 | __FUNCTION__, task); | |
343 | return TASK_IS_ABORTED; | |
344 | } else if (si->dft->lldd_query_task) { | |
345 | SAS_DPRINTK("%s: querying task 0x%p\n", | |
346 | __FUNCTION__, task); | |
347 | res = si->dft->lldd_query_task(task); | |
02cd743b DW |
348 | switch (res) { |
349 | case TMF_RESP_FUNC_SUCC: | |
2908d778 JB |
350 | SAS_DPRINTK("%s: task 0x%p at LU\n", |
351 | __FUNCTION__, task); | |
352 | return TASK_IS_AT_LU; | |
02cd743b | 353 | case TMF_RESP_FUNC_COMPLETE: |
2908d778 JB |
354 | SAS_DPRINTK("%s: task 0x%p not at LU\n", |
355 | __FUNCTION__, task); | |
356 | return TASK_IS_NOT_AT_LU; | |
02cd743b DW |
357 | case TMF_RESP_FUNC_FAILED: |
358 | SAS_DPRINTK("%s: task 0x%p failed to abort\n", | |
359 | __FUNCTION__, task); | |
360 | return TASK_ABORT_FAILED; | |
361 | } | |
362 | ||
2908d778 JB |
363 | } |
364 | } | |
365 | return res; | |
366 | } | |
367 | ||
368 | static int sas_recover_lu(struct domain_device *dev, struct scsi_cmnd *cmd) | |
369 | { | |
370 | int res = TMF_RESP_FUNC_FAILED; | |
371 | struct scsi_lun lun; | |
372 | struct sas_internal *i = | |
373 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
374 | ||
375 | int_to_scsilun(cmd->device->lun, &lun); | |
376 | ||
377 | SAS_DPRINTK("eh: device %llx LUN %x has the task\n", | |
378 | SAS_ADDR(dev->sas_addr), | |
379 | cmd->device->lun); | |
380 | ||
381 | if (i->dft->lldd_abort_task_set) | |
382 | res = i->dft->lldd_abort_task_set(dev, lun.scsi_lun); | |
383 | ||
384 | if (res == TMF_RESP_FUNC_FAILED) { | |
385 | if (i->dft->lldd_clear_task_set) | |
386 | res = i->dft->lldd_clear_task_set(dev, lun.scsi_lun); | |
387 | } | |
388 | ||
389 | if (res == TMF_RESP_FUNC_FAILED) { | |
390 | if (i->dft->lldd_lu_reset) | |
391 | res = i->dft->lldd_lu_reset(dev, lun.scsi_lun); | |
392 | } | |
393 | ||
394 | return res; | |
395 | } | |
396 | ||
397 | static int sas_recover_I_T(struct domain_device *dev) | |
398 | { | |
399 | int res = TMF_RESP_FUNC_FAILED; | |
400 | struct sas_internal *i = | |
401 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
402 | ||
403 | SAS_DPRINTK("I_T nexus reset for dev %016llx\n", | |
404 | SAS_ADDR(dev->sas_addr)); | |
405 | ||
406 | if (i->dft->lldd_I_T_nexus_reset) | |
407 | res = i->dft->lldd_I_T_nexus_reset(dev); | |
408 | ||
409 | return res; | |
410 | } | |
411 | ||
ad689233 DW |
412 | /* Find the sas_phy that's attached to this device */ |
413 | struct sas_phy *find_local_sas_phy(struct domain_device *dev) | |
3ebf6922 | 414 | { |
ad689233 DW |
415 | struct domain_device *pdev = dev->parent; |
416 | struct ex_phy *exphy = NULL; | |
417 | int i; | |
418 | ||
419 | /* Directly attached device */ | |
420 | if (!pdev) | |
421 | return dev->port->phy; | |
3ebf6922 | 422 | |
ad689233 DW |
423 | /* Otherwise look in the expander */ |
424 | for (i = 0; i < pdev->ex_dev.num_phys; i++) | |
425 | if (!memcmp(dev->sas_addr, | |
426 | pdev->ex_dev.ex_phy[i].attached_sas_addr, | |
427 | SAS_ADDR_SIZE)) { | |
428 | exphy = &pdev->ex_dev.ex_phy[i]; | |
429 | break; | |
430 | } | |
3ebf6922 | 431 | |
ad689233 DW |
432 | BUG_ON(!exphy); |
433 | return exphy->phy; | |
3ebf6922 DW |
434 | } |
435 | ||
a9344e68 | 436 | /* Attempt to send a LUN reset message to a device */ |
ad689233 | 437 | int sas_eh_device_reset_handler(struct scsi_cmnd *cmd) |
a9344e68 DW |
438 | { |
439 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
440 | struct sas_internal *i = | |
441 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
442 | struct scsi_lun lun; | |
443 | int res; | |
444 | ||
445 | int_to_scsilun(cmd->device->lun, &lun); | |
446 | ||
447 | if (!i->dft->lldd_lu_reset) | |
448 | return FAILED; | |
449 | ||
450 | res = i->dft->lldd_lu_reset(dev, lun.scsi_lun); | |
451 | if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE) | |
452 | return SUCCESS; | |
453 | ||
454 | return FAILED; | |
455 | } | |
456 | ||
457 | /* Attempt to send a phy (bus) reset */ | |
458 | int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd) | |
ad689233 DW |
459 | { |
460 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
461 | struct sas_phy *phy = find_local_sas_phy(dev); | |
462 | int res; | |
463 | ||
464 | res = sas_phy_reset(phy, 1); | |
465 | if (res) | |
a9344e68 | 466 | SAS_DPRINTK("Bus reset of %s failed 0x%x\n", |
af5ca3f4 | 467 | kobject_name(&phy->dev.kobj), |
ad689233 DW |
468 | res); |
469 | if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE) | |
470 | return SUCCESS; | |
471 | ||
472 | return FAILED; | |
473 | } | |
474 | ||
475 | /* Try to reset a device */ | |
476 | static int try_to_reset_cmd_device(struct Scsi_Host *shost, | |
477 | struct scsi_cmnd *cmd) | |
478 | { | |
a9344e68 DW |
479 | int res; |
480 | ||
ad689233 | 481 | if (!shost->hostt->eh_device_reset_handler) |
a9344e68 DW |
482 | goto try_bus_reset; |
483 | ||
484 | res = shost->hostt->eh_device_reset_handler(cmd); | |
485 | if (res == SUCCESS) | |
486 | return res; | |
ad689233 | 487 | |
a9344e68 DW |
488 | try_bus_reset: |
489 | if (shost->hostt->eh_bus_reset_handler) | |
490 | return shost->hostt->eh_bus_reset_handler(cmd); | |
491 | ||
492 | return FAILED; | |
ad689233 DW |
493 | } |
494 | ||
495 | static int sas_eh_handle_sas_errors(struct Scsi_Host *shost, | |
496 | struct list_head *work_q, | |
497 | struct list_head *done_q) | |
2908d778 | 498 | { |
2908d778 JB |
499 | struct scsi_cmnd *cmd, *n; |
500 | enum task_disposition res = TASK_IS_DONE; | |
3ebf6922 | 501 | int tmf_resp, need_reset; |
2908d778 | 502 | struct sas_internal *i = to_sas_internal(shost->transportt); |
ad689233 DW |
503 | unsigned long flags; |
504 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
2908d778 | 505 | |
2908d778 | 506 | Again: |
ad689233 | 507 | list_for_each_entry_safe(cmd, n, work_q, eh_entry) { |
2908d778 JB |
508 | struct sas_task *task = TO_SAS_TASK(cmd); |
509 | ||
ad689233 | 510 | if (!task) |
f456393e | 511 | continue; |
ad689233 DW |
512 | |
513 | list_del_init(&cmd->eh_entry); | |
3ebf6922 DW |
514 | |
515 | spin_lock_irqsave(&task->task_state_lock, flags); | |
516 | need_reset = task->task_state_flags & SAS_TASK_NEED_DEV_RESET; | |
3ebf6922 DW |
517 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
518 | ||
2908d778 | 519 | SAS_DPRINTK("trying to find task 0x%p\n", task); |
2908d778 JB |
520 | res = sas_scsi_find_task(task); |
521 | ||
522 | cmd->eh_eflags = 0; | |
2908d778 JB |
523 | |
524 | switch (res) { | |
525 | case TASK_IS_DONE: | |
526 | SAS_DPRINTK("%s: task 0x%p is done\n", __FUNCTION__, | |
527 | task); | |
528 | task->task_done(task); | |
3ebf6922 | 529 | if (need_reset) |
ad689233 | 530 | try_to_reset_cmd_device(shost, cmd); |
2908d778 JB |
531 | continue; |
532 | case TASK_IS_ABORTED: | |
533 | SAS_DPRINTK("%s: task 0x%p is aborted\n", | |
534 | __FUNCTION__, task); | |
535 | task->task_done(task); | |
3ebf6922 | 536 | if (need_reset) |
ad689233 | 537 | try_to_reset_cmd_device(shost, cmd); |
2908d778 JB |
538 | continue; |
539 | case TASK_IS_AT_LU: | |
540 | SAS_DPRINTK("task 0x%p is at LU: lu recover\n", task); | |
541 | tmf_resp = sas_recover_lu(task->dev, cmd); | |
542 | if (tmf_resp == TMF_RESP_FUNC_COMPLETE) { | |
543 | SAS_DPRINTK("dev %016llx LU %x is " | |
544 | "recovered\n", | |
545 | SAS_ADDR(task->dev), | |
546 | cmd->device->lun); | |
547 | task->task_done(task); | |
3ebf6922 | 548 | if (need_reset) |
ad689233 DW |
549 | try_to_reset_cmd_device(shost, cmd); |
550 | sas_scsi_clear_queue_lu(work_q, cmd); | |
2908d778 JB |
551 | goto Again; |
552 | } | |
553 | /* fallthrough */ | |
554 | case TASK_IS_NOT_AT_LU: | |
02cd743b | 555 | case TASK_ABORT_FAILED: |
2908d778 JB |
556 | SAS_DPRINTK("task 0x%p is not at LU: I_T recover\n", |
557 | task); | |
558 | tmf_resp = sas_recover_I_T(task->dev); | |
559 | if (tmf_resp == TMF_RESP_FUNC_COMPLETE) { | |
560 | SAS_DPRINTK("I_T %016llx recovered\n", | |
561 | SAS_ADDR(task->dev->sas_addr)); | |
562 | task->task_done(task); | |
3ebf6922 | 563 | if (need_reset) |
ad689233 DW |
564 | try_to_reset_cmd_device(shost, cmd); |
565 | sas_scsi_clear_queue_I_T(work_q, task->dev); | |
2908d778 JB |
566 | goto Again; |
567 | } | |
568 | /* Hammer time :-) */ | |
569 | if (i->dft->lldd_clear_nexus_port) { | |
570 | struct asd_sas_port *port = task->dev->port; | |
571 | SAS_DPRINTK("clearing nexus for port:%d\n", | |
572 | port->id); | |
573 | res = i->dft->lldd_clear_nexus_port(port); | |
574 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
575 | SAS_DPRINTK("clear nexus port:%d " | |
576 | "succeeded\n", port->id); | |
577 | task->task_done(task); | |
3ebf6922 | 578 | if (need_reset) |
ad689233 DW |
579 | try_to_reset_cmd_device(shost, cmd); |
580 | sas_scsi_clear_queue_port(work_q, | |
2908d778 JB |
581 | port); |
582 | goto Again; | |
583 | } | |
584 | } | |
585 | if (i->dft->lldd_clear_nexus_ha) { | |
586 | SAS_DPRINTK("clear nexus ha\n"); | |
587 | res = i->dft->lldd_clear_nexus_ha(ha); | |
588 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
589 | SAS_DPRINTK("clear nexus ha " | |
590 | "succeeded\n"); | |
591 | task->task_done(task); | |
3ebf6922 | 592 | if (need_reset) |
ad689233 | 593 | try_to_reset_cmd_device(shost, cmd); |
2908d778 JB |
594 | goto out; |
595 | } | |
596 | } | |
597 | /* If we are here -- this means that no amount | |
598 | * of effort could recover from errors. Quite | |
599 | * possibly the HA just disappeared. | |
600 | */ | |
601 | SAS_DPRINTK("error from device %llx, LUN %x " | |
602 | "couldn't be recovered in any way\n", | |
603 | SAS_ADDR(task->dev->sas_addr), | |
604 | cmd->device->lun); | |
605 | ||
606 | task->task_done(task); | |
3ebf6922 | 607 | if (need_reset) |
ad689233 | 608 | try_to_reset_cmd_device(shost, cmd); |
2908d778 JB |
609 | goto clear_q; |
610 | } | |
611 | } | |
612 | out: | |
ad689233 | 613 | return list_empty(work_q); |
2908d778 JB |
614 | clear_q: |
615 | SAS_DPRINTK("--- Exit %s -- clear_q\n", __FUNCTION__); | |
ad689233 | 616 | list_for_each_entry_safe(cmd, n, work_q, eh_entry) { |
2908d778 JB |
617 | struct sas_task *task = TO_SAS_TASK(cmd); |
618 | list_del_init(&cmd->eh_entry); | |
619 | task->task_done(task); | |
620 | } | |
ad689233 DW |
621 | return list_empty(work_q); |
622 | } | |
623 | ||
624 | void sas_scsi_recover_host(struct Scsi_Host *shost) | |
625 | { | |
626 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
627 | unsigned long flags; | |
628 | LIST_HEAD(eh_work_q); | |
629 | ||
630 | spin_lock_irqsave(shost->host_lock, flags); | |
631 | list_splice_init(&shost->eh_cmd_q, &eh_work_q); | |
632 | spin_unlock_irqrestore(shost->host_lock, flags); | |
633 | ||
634 | SAS_DPRINTK("Enter %s\n", __FUNCTION__); | |
635 | /* | |
636 | * Deal with commands that still have SAS tasks (i.e. they didn't | |
637 | * complete via the normal sas_task completion mechanism) | |
638 | */ | |
639 | if (sas_eh_handle_sas_errors(shost, &eh_work_q, &ha->eh_done_q)) | |
640 | goto out; | |
641 | ||
642 | /* | |
643 | * Now deal with SCSI commands that completed ok but have a an error | |
644 | * code (and hopefully sense data) attached. This is roughly what | |
645 | * scsi_unjam_host does, but we skip scsi_eh_abort_cmds because any | |
646 | * command we see here has no sas_task and is thus unknown to the HA. | |
647 | */ | |
648 | if (!scsi_eh_get_sense(&eh_work_q, &ha->eh_done_q)) | |
649 | scsi_eh_ready_devs(shost, &eh_work_q, &ha->eh_done_q); | |
650 | ||
651 | out: | |
652 | scsi_eh_flush_done_q(&ha->eh_done_q); | |
653 | SAS_DPRINTK("--- Exit %s\n", __FUNCTION__); | |
654 | return; | |
2908d778 JB |
655 | } |
656 | ||
657 | enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd) | |
658 | { | |
659 | struct sas_task *task = TO_SAS_TASK(cmd); | |
660 | unsigned long flags; | |
661 | ||
662 | if (!task) { | |
6d4dcd4d DW |
663 | cmd->timeout_per_command /= 2; |
664 | SAS_DPRINTK("command 0x%p, task 0x%p, gone: %s\n", | |
665 | cmd, task, (cmd->timeout_per_command ? | |
666 | "EH_RESET_TIMER" : "EH_NOT_HANDLED")); | |
667 | if (!cmd->timeout_per_command) | |
668 | return EH_NOT_HANDLED; | |
669 | return EH_RESET_TIMER; | |
2908d778 JB |
670 | } |
671 | ||
672 | spin_lock_irqsave(&task->task_state_lock, flags); | |
396819fb | 673 | BUG_ON(task->task_state_flags & SAS_TASK_STATE_ABORTED); |
2908d778 JB |
674 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
675 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
676 | SAS_DPRINTK("command 0x%p, task 0x%p, timed out: EH_HANDLED\n", | |
677 | cmd, task); | |
678 | return EH_HANDLED; | |
679 | } | |
b218a0d8 DW |
680 | if (!(task->task_state_flags & SAS_TASK_AT_INITIATOR)) { |
681 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
682 | SAS_DPRINTK("command 0x%p, task 0x%p, not at initiator: " | |
683 | "EH_RESET_TIMER\n", | |
684 | cmd, task); | |
685 | return EH_RESET_TIMER; | |
686 | } | |
2908d778 JB |
687 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
688 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
689 | ||
690 | SAS_DPRINTK("command 0x%p, task 0x%p, timed out: EH_NOT_HANDLED\n", | |
691 | cmd, task); | |
692 | ||
693 | return EH_NOT_HANDLED; | |
694 | } | |
695 | ||
fa1c1e8f DW |
696 | int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) |
697 | { | |
698 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
699 | ||
700 | if (dev_is_sata(dev)) | |
701 | return ata_scsi_ioctl(sdev, cmd, arg); | |
702 | ||
703 | return -EINVAL; | |
704 | } | |
705 | ||
2908d778 JB |
706 | struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy) |
707 | { | |
708 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent); | |
709 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
710 | struct domain_device *found_dev = NULL; | |
711 | int i; | |
980fa2f9 | 712 | unsigned long flags; |
2908d778 | 713 | |
980fa2f9 | 714 | spin_lock_irqsave(&ha->phy_port_lock, flags); |
2908d778 JB |
715 | for (i = 0; i < ha->num_phys; i++) { |
716 | struct asd_sas_port *port = ha->sas_port[i]; | |
717 | struct domain_device *dev; | |
718 | ||
719 | spin_lock(&port->dev_list_lock); | |
720 | list_for_each_entry(dev, &port->dev_list, dev_list_node) { | |
721 | if (rphy == dev->rphy) { | |
722 | found_dev = dev; | |
723 | spin_unlock(&port->dev_list_lock); | |
724 | goto found; | |
725 | } | |
726 | } | |
727 | spin_unlock(&port->dev_list_lock); | |
728 | } | |
729 | found: | |
980fa2f9 | 730 | spin_unlock_irqrestore(&ha->phy_port_lock, flags); |
2908d778 JB |
731 | |
732 | return found_dev; | |
733 | } | |
734 | ||
735 | static inline struct domain_device *sas_find_target(struct scsi_target *starget) | |
736 | { | |
737 | struct sas_rphy *rphy = dev_to_rphy(starget->dev.parent); | |
738 | ||
739 | return sas_find_dev_by_rphy(rphy); | |
740 | } | |
741 | ||
742 | int sas_target_alloc(struct scsi_target *starget) | |
743 | { | |
744 | struct domain_device *found_dev = sas_find_target(starget); | |
338ec570 | 745 | int res; |
2908d778 JB |
746 | |
747 | if (!found_dev) | |
748 | return -ENODEV; | |
749 | ||
fa1c1e8f | 750 | if (dev_is_sata(found_dev)) { |
338ec570 DW |
751 | res = sas_ata_init_host_and_port(found_dev, starget); |
752 | if (res) | |
753 | return res; | |
fa1c1e8f DW |
754 | } |
755 | ||
2908d778 JB |
756 | starget->hostdata = found_dev; |
757 | return 0; | |
758 | } | |
759 | ||
760 | #define SAS_DEF_QD 32 | |
761 | #define SAS_MAX_QD 64 | |
762 | ||
763 | int sas_slave_configure(struct scsi_device *scsi_dev) | |
764 | { | |
765 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
766 | struct sas_ha_struct *sas_ha; | |
767 | ||
768 | BUG_ON(dev->rphy->identify.device_type != SAS_END_DEVICE); | |
769 | ||
fa1c1e8f DW |
770 | if (dev_is_sata(dev)) { |
771 | ata_sas_slave_configure(scsi_dev, dev->sata_dev.ap); | |
772 | return 0; | |
773 | } | |
774 | ||
2908d778 JB |
775 | sas_ha = dev->port->ha; |
776 | ||
777 | sas_read_port_mode_page(scsi_dev); | |
778 | ||
779 | if (scsi_dev->tagged_supported) { | |
780 | scsi_set_tag_type(scsi_dev, MSG_SIMPLE_TAG); | |
781 | scsi_activate_tcq(scsi_dev, SAS_DEF_QD); | |
782 | } else { | |
783 | SAS_DPRINTK("device %llx, LUN %x doesn't support " | |
784 | "TCQ\n", SAS_ADDR(dev->sas_addr), | |
785 | scsi_dev->lun); | |
786 | scsi_dev->tagged_supported = 0; | |
787 | scsi_set_tag_type(scsi_dev, 0); | |
788 | scsi_deactivate_tcq(scsi_dev, 1); | |
789 | } | |
790 | ||
f27708fc DW |
791 | scsi_dev->allow_restart = 1; |
792 | ||
2908d778 JB |
793 | return 0; |
794 | } | |
795 | ||
796 | void sas_slave_destroy(struct scsi_device *scsi_dev) | |
797 | { | |
fa1c1e8f DW |
798 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); |
799 | ||
800 | if (dev_is_sata(dev)) | |
801 | ata_port_disable(dev->sata_dev.ap); | |
2908d778 JB |
802 | } |
803 | ||
804 | int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth) | |
805 | { | |
806 | int res = min(new_depth, SAS_MAX_QD); | |
807 | ||
808 | if (scsi_dev->tagged_supported) | |
809 | scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), | |
810 | res); | |
811 | else { | |
812 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
813 | sas_printk("device %llx LUN %x queue depth changed to 1\n", | |
814 | SAS_ADDR(dev->sas_addr), | |
815 | scsi_dev->lun); | |
816 | scsi_adjust_queue_depth(scsi_dev, 0, 1); | |
817 | res = 1; | |
818 | } | |
819 | ||
820 | return res; | |
821 | } | |
822 | ||
823 | int sas_change_queue_type(struct scsi_device *scsi_dev, int qt) | |
824 | { | |
825 | if (!scsi_dev->tagged_supported) | |
826 | return 0; | |
827 | ||
828 | scsi_deactivate_tcq(scsi_dev, 1); | |
829 | ||
830 | scsi_set_tag_type(scsi_dev, qt); | |
831 | scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth); | |
832 | ||
833 | return qt; | |
834 | } | |
835 | ||
836 | int sas_bios_param(struct scsi_device *scsi_dev, | |
837 | struct block_device *bdev, | |
838 | sector_t capacity, int *hsc) | |
839 | { | |
840 | hsc[0] = 255; | |
841 | hsc[1] = 63; | |
842 | sector_div(capacity, 255*63); | |
843 | hsc[2] = capacity; | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | /* ---------- Task Collector Thread implementation ---------- */ | |
849 | ||
850 | static void sas_queue(struct sas_ha_struct *sas_ha) | |
851 | { | |
852 | struct scsi_core *core = &sas_ha->core; | |
853 | unsigned long flags; | |
854 | LIST_HEAD(q); | |
855 | int can_queue; | |
856 | int res; | |
857 | struct sas_internal *i = to_sas_internal(core->shost->transportt); | |
858 | ||
859 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
d7a54e30 | 860 | while (!kthread_should_stop() && |
2908d778 JB |
861 | !list_empty(&core->task_queue)) { |
862 | ||
863 | can_queue = sas_ha->lldd_queue_size - core->task_queue_size; | |
864 | if (can_queue >= 0) { | |
865 | can_queue = core->task_queue_size; | |
866 | list_splice_init(&core->task_queue, &q); | |
867 | } else { | |
868 | struct list_head *a, *n; | |
869 | ||
870 | can_queue = sas_ha->lldd_queue_size; | |
871 | list_for_each_safe(a, n, &core->task_queue) { | |
872 | list_move_tail(a, &q); | |
873 | if (--can_queue == 0) | |
874 | break; | |
875 | } | |
876 | can_queue = sas_ha->lldd_queue_size; | |
877 | } | |
878 | core->task_queue_size -= can_queue; | |
879 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
880 | { | |
881 | struct sas_task *task = list_entry(q.next, | |
882 | struct sas_task, | |
883 | list); | |
884 | list_del_init(&q); | |
885 | res = i->dft->lldd_execute_task(task, can_queue, | |
886 | GFP_KERNEL); | |
887 | if (unlikely(res)) | |
888 | __list_add(&q, task->list.prev, &task->list); | |
889 | } | |
890 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
891 | if (res) { | |
892 | list_splice_init(&q, &core->task_queue); /*at head*/ | |
893 | core->task_queue_size += can_queue; | |
894 | } | |
895 | } | |
896 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
897 | } | |
898 | ||
2908d778 JB |
899 | /** |
900 | * sas_queue_thread -- The Task Collector thread | |
901 | * @_sas_ha: pointer to struct sas_ha | |
902 | */ | |
903 | static int sas_queue_thread(void *_sas_ha) | |
904 | { | |
905 | struct sas_ha_struct *sas_ha = _sas_ha; | |
2908d778 | 906 | |
2908d778 | 907 | while (1) { |
d7a54e30 CH |
908 | set_current_state(TASK_INTERRUPTIBLE); |
909 | schedule(); | |
2908d778 | 910 | sas_queue(sas_ha); |
d7a54e30 | 911 | if (kthread_should_stop()) |
2908d778 JB |
912 | break; |
913 | } | |
914 | ||
2908d778 JB |
915 | return 0; |
916 | } | |
917 | ||
918 | int sas_init_queue(struct sas_ha_struct *sas_ha) | |
919 | { | |
2908d778 JB |
920 | struct scsi_core *core = &sas_ha->core; |
921 | ||
922 | spin_lock_init(&core->task_queue_lock); | |
923 | core->task_queue_size = 0; | |
924 | INIT_LIST_HEAD(&core->task_queue); | |
2908d778 | 925 | |
d7a54e30 CH |
926 | core->queue_thread = kthread_run(sas_queue_thread, sas_ha, |
927 | "sas_queue_%d", core->shost->host_no); | |
928 | if (IS_ERR(core->queue_thread)) | |
929 | return PTR_ERR(core->queue_thread); | |
930 | return 0; | |
2908d778 JB |
931 | } |
932 | ||
933 | void sas_shutdown_queue(struct sas_ha_struct *sas_ha) | |
934 | { | |
935 | unsigned long flags; | |
936 | struct scsi_core *core = &sas_ha->core; | |
937 | struct sas_task *task, *n; | |
938 | ||
d7a54e30 | 939 | kthread_stop(core->queue_thread); |
2908d778 JB |
940 | |
941 | if (!list_empty(&core->task_queue)) | |
942 | SAS_DPRINTK("HA: %llx: scsi core task queue is NOT empty!?\n", | |
943 | SAS_ADDR(sas_ha->sas_addr)); | |
944 | ||
945 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
946 | list_for_each_entry_safe(task, n, &core->task_queue, list) { | |
947 | struct scsi_cmnd *cmd = task->uldd_task; | |
948 | ||
949 | list_del_init(&task->list); | |
950 | ||
951 | ASSIGN_SAS_TASK(cmd, NULL); | |
952 | sas_free_task(task); | |
953 | cmd->result = DID_ABORT << 16; | |
954 | cmd->scsi_done(cmd); | |
955 | } | |
956 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
957 | } | |
958 | ||
396819fb DW |
959 | /* |
960 | * Call the LLDD task abort routine directly. This function is intended for | |
961 | * use by upper layers that need to tell the LLDD to abort a task. | |
962 | */ | |
963 | int __sas_task_abort(struct sas_task *task) | |
79a5eb60 | 964 | { |
79a5eb60 DW |
965 | struct sas_internal *si = |
966 | to_sas_internal(task->dev->port->ha->core.shost->transportt); | |
967 | unsigned long flags; | |
968 | int res; | |
969 | ||
970 | spin_lock_irqsave(&task->task_state_lock, flags); | |
396819fb DW |
971 | if (task->task_state_flags & SAS_TASK_STATE_ABORTED || |
972 | task->task_state_flags & SAS_TASK_STATE_DONE) { | |
79a5eb60 | 973 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
396819fb | 974 | SAS_DPRINTK("%s: Task %p already finished.\n", __FUNCTION__, |
79a5eb60 DW |
975 | task); |
976 | return 0; | |
977 | } | |
396819fb | 978 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
79a5eb60 DW |
979 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
980 | ||
981 | if (!si->dft->lldd_abort_task) | |
982 | return -ENODEV; | |
983 | ||
984 | res = si->dft->lldd_abort_task(task); | |
396819fb DW |
985 | |
986 | spin_lock_irqsave(&task->task_state_lock, flags); | |
79a5eb60 DW |
987 | if ((task->task_state_flags & SAS_TASK_STATE_DONE) || |
988 | (res == TMF_RESP_FUNC_COMPLETE)) | |
989 | { | |
396819fb DW |
990 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
991 | task->task_done(task); | |
79a5eb60 DW |
992 | return 0; |
993 | } | |
994 | ||
79a5eb60 DW |
995 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) |
996 | task->task_state_flags &= ~SAS_TASK_STATE_ABORTED; | |
997 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
998 | ||
999 | return -EAGAIN; | |
1000 | } | |
1001 | ||
396819fb DW |
1002 | /* |
1003 | * Tell an upper layer that it needs to initiate an abort for a given task. | |
1004 | * This should only ever be called by an LLDD. | |
1005 | */ | |
1006 | void sas_task_abort(struct sas_task *task) | |
79a5eb60 | 1007 | { |
396819fb | 1008 | struct scsi_cmnd *sc = task->uldd_task; |
79a5eb60 | 1009 | |
396819fb DW |
1010 | /* Escape for libsas internal commands */ |
1011 | if (!sc) { | |
1012 | if (!del_timer(&task->timer)) | |
79a5eb60 | 1013 | return; |
396819fb DW |
1014 | task->timer.function(task->timer.data); |
1015 | return; | |
1016 | } | |
79a5eb60 | 1017 | |
3a2755af DW |
1018 | if (dev_is_sata(task->dev)) { |
1019 | sas_ata_task_abort(task); | |
1020 | return; | |
1021 | } | |
1022 | ||
396819fb DW |
1023 | scsi_req_abort_cmd(sc); |
1024 | scsi_schedule_eh(sc->device->host); | |
79a5eb60 DW |
1025 | } |
1026 | ||
fa1c1e8f DW |
1027 | int sas_slave_alloc(struct scsi_device *scsi_dev) |
1028 | { | |
1029 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
1030 | ||
1031 | if (dev_is_sata(dev)) | |
1032 | return ata_sas_port_init(dev->sata_dev.ap); | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | void sas_target_destroy(struct scsi_target *starget) | |
1038 | { | |
1039 | struct domain_device *found_dev = sas_find_target(starget); | |
1040 | ||
1041 | if (!found_dev) | |
1042 | return; | |
1043 | ||
1044 | if (dev_is_sata(found_dev)) | |
1045 | ata_sas_port_destroy(found_dev->sata_dev.ap); | |
1046 | ||
1047 | return; | |
1048 | } | |
1049 | ||
2908d778 JB |
1050 | EXPORT_SYMBOL_GPL(sas_queuecommand); |
1051 | EXPORT_SYMBOL_GPL(sas_target_alloc); | |
1052 | EXPORT_SYMBOL_GPL(sas_slave_configure); | |
1053 | EXPORT_SYMBOL_GPL(sas_slave_destroy); | |
1054 | EXPORT_SYMBOL_GPL(sas_change_queue_depth); | |
1055 | EXPORT_SYMBOL_GPL(sas_change_queue_type); | |
1056 | EXPORT_SYMBOL_GPL(sas_bios_param); | |
396819fb | 1057 | EXPORT_SYMBOL_GPL(__sas_task_abort); |
79a5eb60 | 1058 | EXPORT_SYMBOL_GPL(sas_task_abort); |
dea22214 | 1059 | EXPORT_SYMBOL_GPL(sas_phy_reset); |
acbf167d | 1060 | EXPORT_SYMBOL_GPL(sas_phy_enable); |
ad689233 | 1061 | EXPORT_SYMBOL_GPL(sas_eh_device_reset_handler); |
a9344e68 | 1062 | EXPORT_SYMBOL_GPL(sas_eh_bus_reset_handler); |
fa1c1e8f DW |
1063 | EXPORT_SYMBOL_GPL(sas_slave_alloc); |
1064 | EXPORT_SYMBOL_GPL(sas_target_destroy); | |
1065 | EXPORT_SYMBOL_GPL(sas_ioctl); |