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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 | 26 | #include <linux/kthread.h> |
45e6cdf4 | 27 | #include <linux/firmware.h> |
09703660 | 28 | #include <linux/export.h> |
45e6cdf4 | 29 | #include <linux/ctype.h> |
d7a54e30 | 30 | |
2908d778 JB |
31 | #include "sas_internal.h" |
32 | ||
33 | #include <scsi/scsi_host.h> | |
34 | #include <scsi/scsi_device.h> | |
35 | #include <scsi/scsi_tcq.h> | |
36 | #include <scsi/scsi.h> | |
f456393e | 37 | #include <scsi/scsi_eh.h> |
2908d778 JB |
38 | #include <scsi/scsi_transport.h> |
39 | #include <scsi/scsi_transport_sas.h> | |
338ec570 | 40 | #include <scsi/sas_ata.h> |
2908d778 | 41 | #include "../scsi_sas_internal.h" |
79a5eb60 | 42 | #include "../scsi_transport_api.h" |
ad689233 | 43 | #include "../scsi_priv.h" |
2908d778 JB |
44 | |
45 | #include <linux/err.h> | |
46 | #include <linux/blkdev.h> | |
83144186 | 47 | #include <linux/freezer.h> |
5a0e3ad6 | 48 | #include <linux/gfp.h> |
2908d778 | 49 | #include <linux/scatterlist.h> |
fa1c1e8f | 50 | #include <linux/libata.h> |
2908d778 | 51 | |
a3a14252 DW |
52 | /* record final status and free the task */ |
53 | static void sas_end_task(struct scsi_cmnd *sc, struct sas_task *task) | |
2908d778 JB |
54 | { |
55 | struct task_status_struct *ts = &task->task_status; | |
2908d778 JB |
56 | int hs = 0, stat = 0; |
57 | ||
2908d778 JB |
58 | if (ts->resp == SAS_TASK_UNDELIVERED) { |
59 | /* transport error */ | |
60 | hs = DID_NO_CONNECT; | |
61 | } else { /* ts->resp == SAS_TASK_COMPLETE */ | |
62 | /* task delivered, what happened afterwards? */ | |
63 | switch (ts->stat) { | |
64 | case SAS_DEV_NO_RESPONSE: | |
65 | case SAS_INTERRUPTED: | |
66 | case SAS_PHY_DOWN: | |
67 | case SAS_NAK_R_ERR: | |
68 | case SAS_OPEN_TO: | |
69 | hs = DID_NO_CONNECT; | |
70 | break; | |
71 | case SAS_DATA_UNDERRUN: | |
c13e5566 FT |
72 | scsi_set_resid(sc, ts->residual); |
73 | if (scsi_bufflen(sc) - scsi_get_resid(sc) < sc->underflow) | |
2908d778 JB |
74 | hs = DID_ERROR; |
75 | break; | |
76 | case SAS_DATA_OVERRUN: | |
77 | hs = DID_ERROR; | |
78 | break; | |
79 | case SAS_QUEUE_FULL: | |
80 | hs = DID_SOFT_ERROR; /* retry */ | |
81 | break; | |
82 | case SAS_DEVICE_UNKNOWN: | |
83 | hs = DID_BAD_TARGET; | |
84 | break; | |
85 | case SAS_SG_ERR: | |
86 | hs = DID_PARITY; | |
87 | break; | |
88 | case SAS_OPEN_REJECT: | |
89 | if (ts->open_rej_reason == SAS_OREJ_RSVD_RETRY) | |
90 | hs = DID_SOFT_ERROR; /* retry */ | |
91 | else | |
92 | hs = DID_ERROR; | |
93 | break; | |
94 | case SAS_PROTO_RESPONSE: | |
95 | SAS_DPRINTK("LLDD:%s sent SAS_PROTO_RESP for an SSP " | |
96 | "task; please report this\n", | |
97 | task->dev->port->ha->sas_ha_name); | |
98 | break; | |
99 | case SAS_ABORTED_TASK: | |
100 | hs = DID_ABORT; | |
101 | break; | |
df64d3ca | 102 | case SAM_STAT_CHECK_CONDITION: |
2908d778 | 103 | memcpy(sc->sense_buffer, ts->buf, |
cc75e8ab | 104 | min(SCSI_SENSE_BUFFERSIZE, ts->buf_valid_size)); |
df64d3ca | 105 | stat = SAM_STAT_CHECK_CONDITION; |
2908d778 JB |
106 | break; |
107 | default: | |
108 | stat = ts->stat; | |
109 | break; | |
110 | } | |
111 | } | |
a3a14252 | 112 | |
2908d778 | 113 | sc->result = (hs << 16) | stat; |
a3a14252 | 114 | ASSIGN_SAS_TASK(sc, NULL); |
2908d778 JB |
115 | list_del_init(&task->list); |
116 | sas_free_task(task); | |
a3a14252 DW |
117 | } |
118 | ||
119 | static void sas_scsi_task_done(struct sas_task *task) | |
120 | { | |
121 | struct scsi_cmnd *sc = task->uldd_task; | |
9095a64a DW |
122 | struct domain_device *dev = task->dev; |
123 | struct sas_ha_struct *ha = dev->port->ha; | |
124 | unsigned long flags; | |
125 | ||
126 | spin_lock_irqsave(&dev->done_lock, flags); | |
127 | if (test_bit(SAS_HA_FROZEN, &ha->state)) | |
128 | task = NULL; | |
129 | else | |
130 | ASSIGN_SAS_TASK(sc, NULL); | |
131 | spin_unlock_irqrestore(&dev->done_lock, flags); | |
a3a14252 | 132 | |
9095a64a DW |
133 | if (unlikely(!task)) { |
134 | /* task will be completed by the error handler */ | |
a3a14252 DW |
135 | SAS_DPRINTK("task done but aborted\n"); |
136 | return; | |
137 | } | |
138 | ||
139 | if (unlikely(!sc)) { | |
140 | SAS_DPRINTK("task_done called with non existing SCSI cmnd!\n"); | |
141 | list_del_init(&task->list); | |
142 | sas_free_task(task); | |
143 | return; | |
144 | } | |
145 | ||
a3a14252 | 146 | sas_end_task(sc, task); |
a8e14fec | 147 | sc->scsi_done(sc); |
2908d778 JB |
148 | } |
149 | ||
2908d778 JB |
150 | static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, |
151 | struct domain_device *dev, | |
3cc27547 | 152 | gfp_t gfp_flags) |
2908d778 JB |
153 | { |
154 | struct sas_task *task = sas_alloc_task(gfp_flags); | |
155 | struct scsi_lun lun; | |
156 | ||
157 | if (!task) | |
158 | return NULL; | |
159 | ||
2908d778 JB |
160 | task->uldd_task = cmd; |
161 | ASSIGN_SAS_TASK(cmd, task); | |
162 | ||
163 | task->dev = dev; | |
164 | task->task_proto = task->dev->tproto; /* BUG_ON(!SSP) */ | |
165 | ||
166 | task->ssp_task.retry_count = 1; | |
167 | int_to_scsilun(cmd->device->lun, &lun); | |
168 | memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8); | |
9cbbdca4 | 169 | task->ssp_task.task_attr = TASK_ATTR_SIMPLE; |
2908d778 JB |
170 | memcpy(task->ssp_task.cdb, cmd->cmnd, 16); |
171 | ||
c13e5566 FT |
172 | task->scatter = scsi_sglist(cmd); |
173 | task->num_scatter = scsi_sg_count(cmd); | |
174 | task->total_xfer_len = scsi_bufflen(cmd); | |
2908d778 JB |
175 | task->data_dir = cmd->sc_data_direction; |
176 | ||
177 | task->task_done = sas_scsi_task_done; | |
178 | ||
179 | return task; | |
180 | } | |
181 | ||
338ec570 | 182 | int sas_queue_up(struct sas_task *task) |
2908d778 JB |
183 | { |
184 | struct sas_ha_struct *sas_ha = task->dev->port->ha; | |
185 | struct scsi_core *core = &sas_ha->core; | |
186 | unsigned long flags; | |
187 | LIST_HEAD(list); | |
188 | ||
189 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
190 | if (sas_ha->lldd_queue_size < core->task_queue_size + 1) { | |
191 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
192 | return -SAS_QUEUE_FULL; | |
193 | } | |
194 | list_add_tail(&task->list, &core->task_queue); | |
195 | core->task_queue_size += 1; | |
196 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
d7a54e30 | 197 | wake_up_process(core->queue_thread); |
2908d778 JB |
198 | |
199 | return 0; | |
200 | } | |
201 | ||
92bd401b | 202 | int sas_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) |
2908d778 | 203 | { |
2908d778 | 204 | struct sas_internal *i = to_sas_internal(host->transportt); |
a923f756 CH |
205 | struct domain_device *dev = cmd_to_domain_dev(cmd); |
206 | struct sas_ha_struct *sas_ha = dev->port->ha; | |
207 | struct sas_task *task; | |
208 | int res = 0; | |
2908d778 | 209 | |
a923f756 | 210 | /* If the device fell off, no sense in issuing commands */ |
e139942d | 211 | if (test_bit(SAS_DEV_GONE, &dev->state)) { |
a923f756 CH |
212 | cmd->result = DID_BAD_TARGET << 16; |
213 | goto out_done; | |
214 | } | |
2908d778 | 215 | |
a923f756 | 216 | if (dev_is_sata(dev)) { |
312d3e56 | 217 | spin_lock_irq(dev->sata_dev.ap->lock); |
a923f756 | 218 | res = ata_sas_queuecmd(cmd, dev->sata_dev.ap); |
312d3e56 | 219 | spin_unlock_irq(dev->sata_dev.ap->lock); |
a923f756 CH |
220 | return res; |
221 | } | |
3eb7a51a | 222 | |
a923f756 CH |
223 | task = sas_create_task(cmd, dev, GFP_ATOMIC); |
224 | if (!task) | |
ac81c6a8 | 225 | return SCSI_MLQUEUE_HOST_BUSY; |
fa1c1e8f | 226 | |
a923f756 CH |
227 | /* Queue up, Direct Mode or Task Collector Mode. */ |
228 | if (sas_ha->lldd_max_execute_num < 2) | |
229 | res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC); | |
230 | else | |
231 | res = sas_queue_up(task); | |
232 | ||
233 | if (res) | |
234 | goto out_free_task; | |
235 | return 0; | |
236 | ||
237 | out_free_task: | |
238 | SAS_DPRINTK("lldd_execute_task returned: %d\n", res); | |
239 | ASSIGN_SAS_TASK(cmd, NULL); | |
240 | sas_free_task(task); | |
ac81c6a8 CH |
241 | if (res == -SAS_QUEUE_FULL) |
242 | cmd->result = DID_SOFT_ERROR << 16; /* retry */ | |
243 | else | |
244 | cmd->result = DID_ERROR << 16; | |
a923f756 CH |
245 | out_done: |
246 | cmd->scsi_done(cmd); | |
247 | return 0; | |
2908d778 JB |
248 | } |
249 | ||
a8e14fec JB |
250 | static void sas_eh_finish_cmd(struct scsi_cmnd *cmd) |
251 | { | |
252 | struct sas_task *task = TO_SAS_TASK(cmd); | |
253 | struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(cmd->device->host); | |
254 | ||
a3a14252 DW |
255 | /* At this point, we only get called following an actual abort |
256 | * of the task, so we should be guaranteed not to be racing with | |
257 | * any completions from the LLD. Task is freed after this. | |
258 | */ | |
259 | sas_end_task(cmd, task); | |
260 | ||
a8e14fec JB |
261 | /* now finish the command and move it on to the error |
262 | * handler done list, this also takes it off the | |
a3a14252 DW |
263 | * error handler pending list. |
264 | */ | |
a8e14fec JB |
265 | scsi_eh_finish_cmd(cmd, &sas_ha->eh_done_q); |
266 | } | |
267 | ||
3944f509 DW |
268 | static void sas_eh_defer_cmd(struct scsi_cmnd *cmd) |
269 | { | |
270 | struct sas_task *task = TO_SAS_TASK(cmd); | |
271 | struct domain_device *dev = task->dev; | |
272 | struct sas_ha_struct *ha = dev->port->ha; | |
273 | ||
274 | if (!dev_is_sata(dev)) { | |
275 | sas_eh_finish_cmd(cmd); | |
276 | return; | |
277 | } | |
278 | ||
279 | /* report the timeout to libata */ | |
280 | sas_end_task(cmd, task); | |
281 | list_move_tail(&cmd->eh_entry, &ha->eh_ata_q); | |
282 | } | |
283 | ||
2908d778 JB |
284 | static void sas_scsi_clear_queue_lu(struct list_head *error_q, struct scsi_cmnd *my_cmd) |
285 | { | |
286 | struct scsi_cmnd *cmd, *n; | |
287 | ||
288 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
63e4563b JB |
289 | if (cmd->device->sdev_target == my_cmd->device->sdev_target && |
290 | cmd->device->lun == my_cmd->device->lun) | |
3a2cdf39 | 291 | sas_eh_defer_cmd(cmd); |
2908d778 JB |
292 | } |
293 | } | |
294 | ||
295 | static void sas_scsi_clear_queue_I_T(struct list_head *error_q, | |
296 | struct domain_device *dev) | |
297 | { | |
298 | struct scsi_cmnd *cmd, *n; | |
299 | ||
300 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
301 | struct domain_device *x = cmd_to_domain_dev(cmd); | |
302 | ||
303 | if (x == dev) | |
a8e14fec | 304 | sas_eh_finish_cmd(cmd); |
2908d778 JB |
305 | } |
306 | } | |
307 | ||
308 | static void sas_scsi_clear_queue_port(struct list_head *error_q, | |
309 | struct asd_sas_port *port) | |
310 | { | |
311 | struct scsi_cmnd *cmd, *n; | |
312 | ||
313 | list_for_each_entry_safe(cmd, n, error_q, eh_entry) { | |
314 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
315 | struct asd_sas_port *x = dev->port; | |
316 | ||
317 | if (x == port) | |
a8e14fec | 318 | sas_eh_finish_cmd(cmd); |
2908d778 JB |
319 | } |
320 | } | |
321 | ||
322 | enum task_disposition { | |
323 | TASK_IS_DONE, | |
324 | TASK_IS_ABORTED, | |
325 | TASK_IS_AT_LU, | |
9095a64a | 326 | TASK_IS_NOT_AT_HA, |
2908d778 | 327 | TASK_IS_NOT_AT_LU, |
02cd743b | 328 | TASK_ABORT_FAILED, |
2908d778 JB |
329 | }; |
330 | ||
331 | static enum task_disposition sas_scsi_find_task(struct sas_task *task) | |
332 | { | |
333 | struct sas_ha_struct *ha = task->dev->port->ha; | |
334 | unsigned long flags; | |
335 | int i, res; | |
336 | struct sas_internal *si = | |
337 | to_sas_internal(task->dev->port->ha->core.shost->transportt); | |
338 | ||
339 | if (ha->lldd_max_execute_num > 1) { | |
340 | struct scsi_core *core = &ha->core; | |
341 | struct sas_task *t, *n; | |
342 | ||
9095a64a | 343 | mutex_lock(&core->task_queue_flush); |
2908d778 | 344 | spin_lock_irqsave(&core->task_queue_lock, flags); |
9095a64a | 345 | list_for_each_entry_safe(t, n, &core->task_queue, list) |
2908d778 JB |
346 | if (task == t) { |
347 | list_del_init(&t->list); | |
9095a64a | 348 | break; |
2908d778 | 349 | } |
2908d778 | 350 | spin_unlock_irqrestore(&core->task_queue_lock, flags); |
9095a64a DW |
351 | mutex_unlock(&core->task_queue_flush); |
352 | ||
353 | if (task == t) | |
354 | return TASK_IS_NOT_AT_HA; | |
2908d778 JB |
355 | } |
356 | ||
357 | for (i = 0; i < 5; i++) { | |
cadbd4a5 | 358 | SAS_DPRINTK("%s: aborting task 0x%p\n", __func__, task); |
2908d778 JB |
359 | res = si->dft->lldd_abort_task(task); |
360 | ||
361 | spin_lock_irqsave(&task->task_state_lock, flags); | |
362 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
363 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
cadbd4a5 | 364 | SAS_DPRINTK("%s: task 0x%p is done\n", __func__, |
2908d778 JB |
365 | task); |
366 | return TASK_IS_DONE; | |
367 | } | |
368 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
369 | ||
370 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
371 | SAS_DPRINTK("%s: task 0x%p is aborted\n", | |
cadbd4a5 | 372 | __func__, task); |
2908d778 JB |
373 | return TASK_IS_ABORTED; |
374 | } else if (si->dft->lldd_query_task) { | |
375 | SAS_DPRINTK("%s: querying task 0x%p\n", | |
cadbd4a5 | 376 | __func__, task); |
2908d778 | 377 | res = si->dft->lldd_query_task(task); |
02cd743b DW |
378 | switch (res) { |
379 | case TMF_RESP_FUNC_SUCC: | |
2908d778 | 380 | SAS_DPRINTK("%s: task 0x%p at LU\n", |
cadbd4a5 | 381 | __func__, task); |
2908d778 | 382 | return TASK_IS_AT_LU; |
02cd743b | 383 | case TMF_RESP_FUNC_COMPLETE: |
2908d778 | 384 | SAS_DPRINTK("%s: task 0x%p not at LU\n", |
cadbd4a5 | 385 | __func__, task); |
2908d778 | 386 | return TASK_IS_NOT_AT_LU; |
02cd743b DW |
387 | case TMF_RESP_FUNC_FAILED: |
388 | SAS_DPRINTK("%s: task 0x%p failed to abort\n", | |
cadbd4a5 | 389 | __func__, task); |
02cd743b DW |
390 | return TASK_ABORT_FAILED; |
391 | } | |
392 | ||
2908d778 JB |
393 | } |
394 | } | |
395 | return res; | |
396 | } | |
397 | ||
398 | static int sas_recover_lu(struct domain_device *dev, struct scsi_cmnd *cmd) | |
399 | { | |
400 | int res = TMF_RESP_FUNC_FAILED; | |
401 | struct scsi_lun lun; | |
402 | struct sas_internal *i = | |
403 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
404 | ||
405 | int_to_scsilun(cmd->device->lun, &lun); | |
406 | ||
407 | SAS_DPRINTK("eh: device %llx LUN %x has the task\n", | |
408 | SAS_ADDR(dev->sas_addr), | |
409 | cmd->device->lun); | |
410 | ||
411 | if (i->dft->lldd_abort_task_set) | |
412 | res = i->dft->lldd_abort_task_set(dev, lun.scsi_lun); | |
413 | ||
414 | if (res == TMF_RESP_FUNC_FAILED) { | |
415 | if (i->dft->lldd_clear_task_set) | |
416 | res = i->dft->lldd_clear_task_set(dev, lun.scsi_lun); | |
417 | } | |
418 | ||
419 | if (res == TMF_RESP_FUNC_FAILED) { | |
420 | if (i->dft->lldd_lu_reset) | |
421 | res = i->dft->lldd_lu_reset(dev, lun.scsi_lun); | |
422 | } | |
423 | ||
424 | return res; | |
425 | } | |
426 | ||
427 | static int sas_recover_I_T(struct domain_device *dev) | |
428 | { | |
429 | int res = TMF_RESP_FUNC_FAILED; | |
430 | struct sas_internal *i = | |
431 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
432 | ||
433 | SAS_DPRINTK("I_T nexus reset for dev %016llx\n", | |
434 | SAS_ADDR(dev->sas_addr)); | |
435 | ||
436 | if (i->dft->lldd_I_T_nexus_reset) | |
437 | res = i->dft->lldd_I_T_nexus_reset(dev); | |
438 | ||
439 | return res; | |
440 | } | |
441 | ||
ad689233 | 442 | /* Find the sas_phy that's attached to this device */ |
5319578c | 443 | struct sas_phy *sas_find_local_phy(struct domain_device *dev) |
3ebf6922 | 444 | { |
ad689233 DW |
445 | struct domain_device *pdev = dev->parent; |
446 | struct ex_phy *exphy = NULL; | |
447 | int i; | |
448 | ||
449 | /* Directly attached device */ | |
450 | if (!pdev) | |
451 | return dev->port->phy; | |
3ebf6922 | 452 | |
ad689233 DW |
453 | /* Otherwise look in the expander */ |
454 | for (i = 0; i < pdev->ex_dev.num_phys; i++) | |
455 | if (!memcmp(dev->sas_addr, | |
456 | pdev->ex_dev.ex_phy[i].attached_sas_addr, | |
457 | SAS_ADDR_SIZE)) { | |
458 | exphy = &pdev->ex_dev.ex_phy[i]; | |
459 | break; | |
460 | } | |
3ebf6922 | 461 | |
ad689233 DW |
462 | BUG_ON(!exphy); |
463 | return exphy->phy; | |
3ebf6922 | 464 | } |
5319578c | 465 | EXPORT_SYMBOL_GPL(sas_find_local_phy); |
3ebf6922 | 466 | |
a9344e68 | 467 | /* Attempt to send a LUN reset message to a device */ |
ad689233 | 468 | int sas_eh_device_reset_handler(struct scsi_cmnd *cmd) |
a9344e68 DW |
469 | { |
470 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
471 | struct sas_internal *i = | |
472 | to_sas_internal(dev->port->ha->core.shost->transportt); | |
473 | struct scsi_lun lun; | |
474 | int res; | |
475 | ||
476 | int_to_scsilun(cmd->device->lun, &lun); | |
477 | ||
478 | if (!i->dft->lldd_lu_reset) | |
479 | return FAILED; | |
480 | ||
481 | res = i->dft->lldd_lu_reset(dev, lun.scsi_lun); | |
482 | if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE) | |
483 | return SUCCESS; | |
484 | ||
485 | return FAILED; | |
486 | } | |
487 | ||
488 | /* Attempt to send a phy (bus) reset */ | |
489 | int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd) | |
ad689233 DW |
490 | { |
491 | struct domain_device *dev = cmd_to_domain_dev(cmd); | |
5319578c | 492 | struct sas_phy *phy = sas_find_local_phy(dev); |
ad689233 DW |
493 | int res; |
494 | ||
495 | res = sas_phy_reset(phy, 1); | |
496 | if (res) | |
a9344e68 | 497 | SAS_DPRINTK("Bus reset of %s failed 0x%x\n", |
af5ca3f4 | 498 | kobject_name(&phy->dev.kobj), |
ad689233 DW |
499 | res); |
500 | if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE) | |
501 | return SUCCESS; | |
502 | ||
503 | return FAILED; | |
504 | } | |
505 | ||
506 | /* Try to reset a device */ | |
8de3ef25 | 507 | static int try_to_reset_cmd_device(struct scsi_cmnd *cmd) |
ad689233 | 508 | { |
a9344e68 | 509 | int res; |
8de3ef25 | 510 | struct Scsi_Host *shost = cmd->device->host; |
a9344e68 | 511 | |
ad689233 | 512 | if (!shost->hostt->eh_device_reset_handler) |
a9344e68 DW |
513 | goto try_bus_reset; |
514 | ||
515 | res = shost->hostt->eh_device_reset_handler(cmd); | |
516 | if (res == SUCCESS) | |
517 | return res; | |
ad689233 | 518 | |
a9344e68 DW |
519 | try_bus_reset: |
520 | if (shost->hostt->eh_bus_reset_handler) | |
521 | return shost->hostt->eh_bus_reset_handler(cmd); | |
522 | ||
523 | return FAILED; | |
ad689233 DW |
524 | } |
525 | ||
526 | static int sas_eh_handle_sas_errors(struct Scsi_Host *shost, | |
9095a64a | 527 | struct list_head *work_q) |
2908d778 | 528 | { |
2908d778 JB |
529 | struct scsi_cmnd *cmd, *n; |
530 | enum task_disposition res = TASK_IS_DONE; | |
3ebf6922 | 531 | int tmf_resp, need_reset; |
2908d778 | 532 | struct sas_internal *i = to_sas_internal(shost->transportt); |
ad689233 DW |
533 | unsigned long flags; |
534 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
2908d778 | 535 | |
2908d778 | 536 | Again: |
ad689233 | 537 | list_for_each_entry_safe(cmd, n, work_q, eh_entry) { |
9095a64a DW |
538 | struct domain_device *dev = cmd_to_domain_dev(cmd); |
539 | struct sas_task *task; | |
540 | ||
541 | spin_lock_irqsave(&dev->done_lock, flags); | |
542 | /* by this point the lldd has either observed | |
543 | * SAS_HA_FROZEN and is leaving the task alone, or has | |
544 | * won the race with eh and decided to complete it | |
545 | */ | |
546 | task = TO_SAS_TASK(cmd); | |
547 | spin_unlock_irqrestore(&dev->done_lock, flags); | |
2908d778 | 548 | |
ad689233 | 549 | if (!task) |
f456393e | 550 | continue; |
ad689233 DW |
551 | |
552 | list_del_init(&cmd->eh_entry); | |
3ebf6922 DW |
553 | |
554 | spin_lock_irqsave(&task->task_state_lock, flags); | |
555 | need_reset = task->task_state_flags & SAS_TASK_NEED_DEV_RESET; | |
3ebf6922 DW |
556 | spin_unlock_irqrestore(&task->task_state_lock, flags); |
557 | ||
8de3ef25 JB |
558 | if (need_reset) { |
559 | SAS_DPRINTK("%s: task 0x%p requests reset\n", | |
cadbd4a5 | 560 | __func__, task); |
8de3ef25 JB |
561 | goto reset; |
562 | } | |
563 | ||
2908d778 | 564 | SAS_DPRINTK("trying to find task 0x%p\n", task); |
2908d778 JB |
565 | res = sas_scsi_find_task(task); |
566 | ||
567 | cmd->eh_eflags = 0; | |
2908d778 JB |
568 | |
569 | switch (res) { | |
9095a64a DW |
570 | case TASK_IS_NOT_AT_HA: |
571 | SAS_DPRINTK("%s: task 0x%p is not at ha: %s\n", | |
572 | __func__, task, | |
573 | cmd->retries ? "retry" : "aborted"); | |
574 | if (cmd->retries) | |
575 | cmd->retries--; | |
576 | sas_eh_finish_cmd(cmd); | |
577 | continue; | |
2908d778 | 578 | case TASK_IS_DONE: |
cadbd4a5 | 579 | SAS_DPRINTK("%s: task 0x%p is done\n", __func__, |
2908d778 | 580 | task); |
3944f509 | 581 | sas_eh_defer_cmd(cmd); |
2908d778 JB |
582 | continue; |
583 | case TASK_IS_ABORTED: | |
584 | SAS_DPRINTK("%s: task 0x%p is aborted\n", | |
cadbd4a5 | 585 | __func__, task); |
3944f509 | 586 | sas_eh_defer_cmd(cmd); |
2908d778 JB |
587 | continue; |
588 | case TASK_IS_AT_LU: | |
589 | SAS_DPRINTK("task 0x%p is at LU: lu recover\n", task); | |
8de3ef25 | 590 | reset: |
2908d778 JB |
591 | tmf_resp = sas_recover_lu(task->dev, cmd); |
592 | if (tmf_resp == TMF_RESP_FUNC_COMPLETE) { | |
593 | SAS_DPRINTK("dev %016llx LU %x is " | |
594 | "recovered\n", | |
595 | SAS_ADDR(task->dev), | |
596 | cmd->device->lun); | |
3a2cdf39 | 597 | sas_eh_defer_cmd(cmd); |
ad689233 | 598 | sas_scsi_clear_queue_lu(work_q, cmd); |
2908d778 JB |
599 | goto Again; |
600 | } | |
601 | /* fallthrough */ | |
602 | case TASK_IS_NOT_AT_LU: | |
02cd743b | 603 | case TASK_ABORT_FAILED: |
2908d778 JB |
604 | SAS_DPRINTK("task 0x%p is not at LU: I_T recover\n", |
605 | task); | |
606 | tmf_resp = sas_recover_I_T(task->dev); | |
607 | if (tmf_resp == TMF_RESP_FUNC_COMPLETE) { | |
8de3ef25 | 608 | struct domain_device *dev = task->dev; |
2908d778 JB |
609 | SAS_DPRINTK("I_T %016llx recovered\n", |
610 | SAS_ADDR(task->dev->sas_addr)); | |
a8e14fec | 611 | sas_eh_finish_cmd(cmd); |
8de3ef25 | 612 | sas_scsi_clear_queue_I_T(work_q, dev); |
2908d778 JB |
613 | goto Again; |
614 | } | |
615 | /* Hammer time :-) */ | |
8de3ef25 | 616 | try_to_reset_cmd_device(cmd); |
2908d778 JB |
617 | if (i->dft->lldd_clear_nexus_port) { |
618 | struct asd_sas_port *port = task->dev->port; | |
619 | SAS_DPRINTK("clearing nexus for port:%d\n", | |
620 | port->id); | |
621 | res = i->dft->lldd_clear_nexus_port(port); | |
622 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
623 | SAS_DPRINTK("clear nexus port:%d " | |
624 | "succeeded\n", port->id); | |
a8e14fec | 625 | sas_eh_finish_cmd(cmd); |
ad689233 | 626 | sas_scsi_clear_queue_port(work_q, |
2908d778 JB |
627 | port); |
628 | goto Again; | |
629 | } | |
630 | } | |
631 | if (i->dft->lldd_clear_nexus_ha) { | |
632 | SAS_DPRINTK("clear nexus ha\n"); | |
633 | res = i->dft->lldd_clear_nexus_ha(ha); | |
634 | if (res == TMF_RESP_FUNC_COMPLETE) { | |
635 | SAS_DPRINTK("clear nexus ha " | |
636 | "succeeded\n"); | |
a8e14fec | 637 | sas_eh_finish_cmd(cmd); |
a8e14fec | 638 | goto clear_q; |
2908d778 JB |
639 | } |
640 | } | |
641 | /* If we are here -- this means that no amount | |
642 | * of effort could recover from errors. Quite | |
643 | * possibly the HA just disappeared. | |
644 | */ | |
645 | SAS_DPRINTK("error from device %llx, LUN %x " | |
646 | "couldn't be recovered in any way\n", | |
647 | SAS_ADDR(task->dev->sas_addr), | |
648 | cmd->device->lun); | |
649 | ||
a8e14fec | 650 | sas_eh_finish_cmd(cmd); |
2908d778 JB |
651 | goto clear_q; |
652 | } | |
653 | } | |
3944f509 | 654 | list_splice_tail_init(&ha->eh_ata_q, work_q); |
ad689233 | 655 | return list_empty(work_q); |
2908d778 | 656 | clear_q: |
cadbd4a5 | 657 | SAS_DPRINTK("--- Exit %s -- clear_q\n", __func__); |
a8e14fec JB |
658 | list_for_each_entry_safe(cmd, n, work_q, eh_entry) |
659 | sas_eh_finish_cmd(cmd); | |
660 | ||
3944f509 | 661 | list_splice_tail_init(&ha->eh_ata_q, work_q); |
ad689233 DW |
662 | return list_empty(work_q); |
663 | } | |
664 | ||
665 | void sas_scsi_recover_host(struct Scsi_Host *shost) | |
666 | { | |
667 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
668 | unsigned long flags; | |
669 | LIST_HEAD(eh_work_q); | |
670 | ||
671 | spin_lock_irqsave(shost->host_lock, flags); | |
672 | list_splice_init(&shost->eh_cmd_q, &eh_work_q); | |
9ee91f7f | 673 | shost->host_eh_scheduled = 0; |
ad689233 DW |
674 | spin_unlock_irqrestore(shost->host_lock, flags); |
675 | ||
cadbd4a5 | 676 | SAS_DPRINTK("Enter %s\n", __func__); |
ad689233 DW |
677 | /* |
678 | * Deal with commands that still have SAS tasks (i.e. they didn't | |
679 | * complete via the normal sas_task completion mechanism) | |
680 | */ | |
9095a64a DW |
681 | set_bit(SAS_HA_FROZEN, &ha->state); |
682 | if (sas_eh_handle_sas_errors(shost, &eh_work_q)) | |
ad689233 DW |
683 | goto out; |
684 | ||
685 | /* | |
686 | * Now deal with SCSI commands that completed ok but have a an error | |
687 | * code (and hopefully sense data) attached. This is roughly what | |
688 | * scsi_unjam_host does, but we skip scsi_eh_abort_cmds because any | |
689 | * command we see here has no sas_task and is thus unknown to the HA. | |
690 | */ | |
00dd4998 JB |
691 | if (!sas_ata_eh(shost, &eh_work_q, &ha->eh_done_q)) |
692 | if (!scsi_eh_get_sense(&eh_work_q, &ha->eh_done_q)) | |
693 | scsi_eh_ready_devs(shost, &eh_work_q, &ha->eh_done_q); | |
ad689233 DW |
694 | |
695 | out: | |
9095a64a DW |
696 | clear_bit(SAS_HA_FROZEN, &ha->state); |
697 | if (ha->lldd_max_execute_num > 1) | |
698 | wake_up_process(ha->core.queue_thread); | |
699 | ||
00dd4998 JB |
700 | /* now link into libata eh --- if we have any ata devices */ |
701 | sas_ata_strategy_handler(shost); | |
702 | ||
ad689233 | 703 | scsi_eh_flush_done_q(&ha->eh_done_q); |
00dd4998 | 704 | |
cadbd4a5 | 705 | SAS_DPRINTK("--- Exit %s\n", __func__); |
ad689233 | 706 | return; |
2908d778 JB |
707 | } |
708 | ||
242f9dcb | 709 | enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd) |
2908d778 | 710 | { |
9095a64a | 711 | scmd_printk(KERN_DEBUG, cmd, "command %p timed out\n", cmd); |
2908d778 | 712 | |
242f9dcb | 713 | return BLK_EH_NOT_HANDLED; |
2908d778 JB |
714 | } |
715 | ||
fa1c1e8f DW |
716 | int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) |
717 | { | |
718 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
719 | ||
720 | if (dev_is_sata(dev)) | |
94be9a58 | 721 | return ata_sas_scsi_ioctl(dev->sata_dev.ap, sdev, cmd, arg); |
fa1c1e8f DW |
722 | |
723 | return -EINVAL; | |
724 | } | |
725 | ||
2908d778 JB |
726 | struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy) |
727 | { | |
728 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent); | |
729 | struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); | |
730 | struct domain_device *found_dev = NULL; | |
731 | int i; | |
980fa2f9 | 732 | unsigned long flags; |
2908d778 | 733 | |
980fa2f9 | 734 | spin_lock_irqsave(&ha->phy_port_lock, flags); |
2908d778 JB |
735 | for (i = 0; i < ha->num_phys; i++) { |
736 | struct asd_sas_port *port = ha->sas_port[i]; | |
737 | struct domain_device *dev; | |
738 | ||
739 | spin_lock(&port->dev_list_lock); | |
740 | list_for_each_entry(dev, &port->dev_list, dev_list_node) { | |
741 | if (rphy == dev->rphy) { | |
742 | found_dev = dev; | |
743 | spin_unlock(&port->dev_list_lock); | |
744 | goto found; | |
745 | } | |
746 | } | |
747 | spin_unlock(&port->dev_list_lock); | |
748 | } | |
749 | found: | |
980fa2f9 | 750 | spin_unlock_irqrestore(&ha->phy_port_lock, flags); |
2908d778 JB |
751 | |
752 | return found_dev; | |
753 | } | |
754 | ||
2908d778 JB |
755 | int sas_target_alloc(struct scsi_target *starget) |
756 | { | |
735f7d2f DW |
757 | struct sas_rphy *rphy = dev_to_rphy(starget->dev.parent); |
758 | struct domain_device *found_dev = sas_find_dev_by_rphy(rphy); | |
338ec570 | 759 | int res; |
2908d778 JB |
760 | |
761 | if (!found_dev) | |
762 | return -ENODEV; | |
763 | ||
fa1c1e8f | 764 | if (dev_is_sata(found_dev)) { |
338ec570 DW |
765 | res = sas_ata_init_host_and_port(found_dev, starget); |
766 | if (res) | |
767 | return res; | |
fa1c1e8f DW |
768 | } |
769 | ||
735f7d2f | 770 | kref_get(&found_dev->kref); |
2908d778 JB |
771 | starget->hostdata = found_dev; |
772 | return 0; | |
773 | } | |
774 | ||
97a1420d | 775 | #define SAS_DEF_QD 256 |
2908d778 JB |
776 | |
777 | int sas_slave_configure(struct scsi_device *scsi_dev) | |
778 | { | |
779 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
780 | struct sas_ha_struct *sas_ha; | |
781 | ||
782 | BUG_ON(dev->rphy->identify.device_type != SAS_END_DEVICE); | |
783 | ||
fa1c1e8f DW |
784 | if (dev_is_sata(dev)) { |
785 | ata_sas_slave_configure(scsi_dev, dev->sata_dev.ap); | |
786 | return 0; | |
787 | } | |
788 | ||
2908d778 JB |
789 | sas_ha = dev->port->ha; |
790 | ||
791 | sas_read_port_mode_page(scsi_dev); | |
792 | ||
793 | if (scsi_dev->tagged_supported) { | |
794 | scsi_set_tag_type(scsi_dev, MSG_SIMPLE_TAG); | |
795 | scsi_activate_tcq(scsi_dev, SAS_DEF_QD); | |
796 | } else { | |
797 | SAS_DPRINTK("device %llx, LUN %x doesn't support " | |
798 | "TCQ\n", SAS_ADDR(dev->sas_addr), | |
799 | scsi_dev->lun); | |
800 | scsi_dev->tagged_supported = 0; | |
801 | scsi_set_tag_type(scsi_dev, 0); | |
802 | scsi_deactivate_tcq(scsi_dev, 1); | |
803 | } | |
804 | ||
f27708fc DW |
805 | scsi_dev->allow_restart = 1; |
806 | ||
2908d778 JB |
807 | return 0; |
808 | } | |
809 | ||
97a1420d | 810 | int sas_change_queue_depth(struct scsi_device *sdev, int depth, int reason) |
2908d778 | 811 | { |
97a1420d | 812 | struct domain_device *dev = sdev_to_domain_dev(sdev); |
2908d778 | 813 | |
f6e67035 | 814 | if (dev_is_sata(dev)) |
97a1420d DW |
815 | return __ata_change_queue_depth(dev->sata_dev.ap, sdev, depth, |
816 | reason); | |
817 | ||
818 | switch (reason) { | |
819 | case SCSI_QDEPTH_DEFAULT: | |
820 | case SCSI_QDEPTH_RAMP_UP: | |
821 | if (!sdev->tagged_supported) | |
822 | depth = 1; | |
823 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); | |
824 | break; | |
825 | case SCSI_QDEPTH_QFULL: | |
826 | scsi_track_queue_full(sdev, depth); | |
827 | break; | |
828 | default: | |
e881a172 | 829 | return -EOPNOTSUPP; |
2908d778 JB |
830 | } |
831 | ||
97a1420d | 832 | return depth; |
2908d778 JB |
833 | } |
834 | ||
835 | int sas_change_queue_type(struct scsi_device *scsi_dev, int qt) | |
836 | { | |
f6e67035 DW |
837 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); |
838 | ||
839 | if (dev_is_sata(dev)) | |
840 | return -EINVAL; | |
841 | ||
2908d778 JB |
842 | if (!scsi_dev->tagged_supported) |
843 | return 0; | |
844 | ||
845 | scsi_deactivate_tcq(scsi_dev, 1); | |
846 | ||
847 | scsi_set_tag_type(scsi_dev, qt); | |
848 | scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth); | |
849 | ||
850 | return qt; | |
851 | } | |
852 | ||
853 | int sas_bios_param(struct scsi_device *scsi_dev, | |
854 | struct block_device *bdev, | |
855 | sector_t capacity, int *hsc) | |
856 | { | |
857 | hsc[0] = 255; | |
858 | hsc[1] = 63; | |
859 | sector_div(capacity, 255*63); | |
860 | hsc[2] = capacity; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | /* ---------- Task Collector Thread implementation ---------- */ | |
866 | ||
867 | static void sas_queue(struct sas_ha_struct *sas_ha) | |
868 | { | |
869 | struct scsi_core *core = &sas_ha->core; | |
870 | unsigned long flags; | |
871 | LIST_HEAD(q); | |
872 | int can_queue; | |
873 | int res; | |
874 | struct sas_internal *i = to_sas_internal(core->shost->transportt); | |
875 | ||
9095a64a | 876 | mutex_lock(&core->task_queue_flush); |
2908d778 | 877 | spin_lock_irqsave(&core->task_queue_lock, flags); |
d7a54e30 | 878 | while (!kthread_should_stop() && |
9095a64a DW |
879 | !list_empty(&core->task_queue) && |
880 | !test_bit(SAS_HA_FROZEN, &sas_ha->state)) { | |
2908d778 JB |
881 | |
882 | can_queue = sas_ha->lldd_queue_size - core->task_queue_size; | |
883 | if (can_queue >= 0) { | |
884 | can_queue = core->task_queue_size; | |
885 | list_splice_init(&core->task_queue, &q); | |
886 | } else { | |
887 | struct list_head *a, *n; | |
888 | ||
889 | can_queue = sas_ha->lldd_queue_size; | |
890 | list_for_each_safe(a, n, &core->task_queue) { | |
891 | list_move_tail(a, &q); | |
892 | if (--can_queue == 0) | |
893 | break; | |
894 | } | |
895 | can_queue = sas_ha->lldd_queue_size; | |
896 | } | |
897 | core->task_queue_size -= can_queue; | |
898 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
899 | { | |
900 | struct sas_task *task = list_entry(q.next, | |
901 | struct sas_task, | |
902 | list); | |
903 | list_del_init(&q); | |
904 | res = i->dft->lldd_execute_task(task, can_queue, | |
905 | GFP_KERNEL); | |
906 | if (unlikely(res)) | |
907 | __list_add(&q, task->list.prev, &task->list); | |
908 | } | |
909 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
910 | if (res) { | |
911 | list_splice_init(&q, &core->task_queue); /*at head*/ | |
912 | core->task_queue_size += can_queue; | |
913 | } | |
914 | } | |
915 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
9095a64a | 916 | mutex_unlock(&core->task_queue_flush); |
2908d778 JB |
917 | } |
918 | ||
2908d778 JB |
919 | /** |
920 | * sas_queue_thread -- The Task Collector thread | |
921 | * @_sas_ha: pointer to struct sas_ha | |
922 | */ | |
923 | static int sas_queue_thread(void *_sas_ha) | |
924 | { | |
925 | struct sas_ha_struct *sas_ha = _sas_ha; | |
2908d778 | 926 | |
2908d778 | 927 | while (1) { |
d7a54e30 CH |
928 | set_current_state(TASK_INTERRUPTIBLE); |
929 | schedule(); | |
2908d778 | 930 | sas_queue(sas_ha); |
d7a54e30 | 931 | if (kthread_should_stop()) |
2908d778 JB |
932 | break; |
933 | } | |
934 | ||
2908d778 JB |
935 | return 0; |
936 | } | |
937 | ||
938 | int sas_init_queue(struct sas_ha_struct *sas_ha) | |
939 | { | |
2908d778 JB |
940 | struct scsi_core *core = &sas_ha->core; |
941 | ||
942 | spin_lock_init(&core->task_queue_lock); | |
9095a64a | 943 | mutex_init(&core->task_queue_flush); |
2908d778 JB |
944 | core->task_queue_size = 0; |
945 | INIT_LIST_HEAD(&core->task_queue); | |
2908d778 | 946 | |
d7a54e30 CH |
947 | core->queue_thread = kthread_run(sas_queue_thread, sas_ha, |
948 | "sas_queue_%d", core->shost->host_no); | |
949 | if (IS_ERR(core->queue_thread)) | |
950 | return PTR_ERR(core->queue_thread); | |
951 | return 0; | |
2908d778 JB |
952 | } |
953 | ||
954 | void sas_shutdown_queue(struct sas_ha_struct *sas_ha) | |
955 | { | |
956 | unsigned long flags; | |
957 | struct scsi_core *core = &sas_ha->core; | |
958 | struct sas_task *task, *n; | |
959 | ||
d7a54e30 | 960 | kthread_stop(core->queue_thread); |
2908d778 JB |
961 | |
962 | if (!list_empty(&core->task_queue)) | |
963 | SAS_DPRINTK("HA: %llx: scsi core task queue is NOT empty!?\n", | |
964 | SAS_ADDR(sas_ha->sas_addr)); | |
965 | ||
966 | spin_lock_irqsave(&core->task_queue_lock, flags); | |
967 | list_for_each_entry_safe(task, n, &core->task_queue, list) { | |
968 | struct scsi_cmnd *cmd = task->uldd_task; | |
969 | ||
970 | list_del_init(&task->list); | |
971 | ||
972 | ASSIGN_SAS_TASK(cmd, NULL); | |
973 | sas_free_task(task); | |
974 | cmd->result = DID_ABORT << 16; | |
975 | cmd->scsi_done(cmd); | |
976 | } | |
977 | spin_unlock_irqrestore(&core->task_queue_lock, flags); | |
978 | } | |
979 | ||
396819fb DW |
980 | /* |
981 | * Tell an upper layer that it needs to initiate an abort for a given task. | |
982 | * This should only ever be called by an LLDD. | |
983 | */ | |
984 | void sas_task_abort(struct sas_task *task) | |
79a5eb60 | 985 | { |
396819fb | 986 | struct scsi_cmnd *sc = task->uldd_task; |
79a5eb60 | 987 | |
396819fb DW |
988 | /* Escape for libsas internal commands */ |
989 | if (!sc) { | |
990 | if (!del_timer(&task->timer)) | |
79a5eb60 | 991 | return; |
396819fb DW |
992 | task->timer.function(task->timer.data); |
993 | return; | |
994 | } | |
79a5eb60 | 995 | |
3a2755af DW |
996 | if (dev_is_sata(task->dev)) { |
997 | sas_ata_task_abort(task); | |
1b4d0d8e JB |
998 | } else { |
999 | struct request_queue *q = sc->device->request_queue; | |
1000 | unsigned long flags; | |
3a2755af | 1001 | |
1b4d0d8e JB |
1002 | spin_lock_irqsave(q->queue_lock, flags); |
1003 | blk_abort_request(sc->request); | |
1004 | spin_unlock_irqrestore(q->queue_lock, flags); | |
1005 | scsi_schedule_eh(sc->device->host); | |
1006 | } | |
79a5eb60 DW |
1007 | } |
1008 | ||
fa1c1e8f DW |
1009 | int sas_slave_alloc(struct scsi_device *scsi_dev) |
1010 | { | |
1011 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
1012 | ||
1013 | if (dev_is_sata(dev)) | |
1014 | return ata_sas_port_init(dev->sata_dev.ap); | |
1015 | ||
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | void sas_target_destroy(struct scsi_target *starget) | |
1020 | { | |
735f7d2f | 1021 | struct domain_device *found_dev = starget->hostdata; |
fa1c1e8f DW |
1022 | |
1023 | if (!found_dev) | |
1024 | return; | |
1025 | ||
1026 | if (dev_is_sata(found_dev)) | |
1027 | ata_sas_port_destroy(found_dev->sata_dev.ap); | |
1028 | ||
735f7d2f DW |
1029 | starget->hostdata = NULL; |
1030 | sas_put_device(found_dev); | |
fa1c1e8f DW |
1031 | } |
1032 | ||
45e6cdf4 DW |
1033 | static void sas_parse_addr(u8 *sas_addr, const char *p) |
1034 | { | |
1035 | int i; | |
1036 | for (i = 0; i < SAS_ADDR_SIZE; i++) { | |
1037 | u8 h, l; | |
1038 | if (!*p) | |
1039 | break; | |
1040 | h = isdigit(*p) ? *p-'0' : toupper(*p)-'A'+10; | |
1041 | p++; | |
1042 | l = isdigit(*p) ? *p-'0' : toupper(*p)-'A'+10; | |
1043 | p++; | |
1044 | sas_addr[i] = (h<<4) | l; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | #define SAS_STRING_ADDR_SIZE 16 | |
1049 | ||
1050 | int sas_request_addr(struct Scsi_Host *shost, u8 *addr) | |
1051 | { | |
1052 | int res; | |
1053 | const struct firmware *fw; | |
1054 | ||
1055 | res = request_firmware(&fw, "sas_addr", &shost->shost_gendev); | |
1056 | if (res) | |
1057 | return res; | |
1058 | ||
1059 | if (fw->size < SAS_STRING_ADDR_SIZE) { | |
1060 | res = -ENODEV; | |
1061 | goto out; | |
1062 | } | |
1063 | ||
1064 | sas_parse_addr(addr, fw->data); | |
1065 | ||
1066 | out: | |
1067 | release_firmware(fw); | |
1068 | return res; | |
1069 | } | |
1070 | EXPORT_SYMBOL_GPL(sas_request_addr); | |
1071 | ||
2908d778 JB |
1072 | EXPORT_SYMBOL_GPL(sas_queuecommand); |
1073 | EXPORT_SYMBOL_GPL(sas_target_alloc); | |
1074 | EXPORT_SYMBOL_GPL(sas_slave_configure); | |
2908d778 JB |
1075 | EXPORT_SYMBOL_GPL(sas_change_queue_depth); |
1076 | EXPORT_SYMBOL_GPL(sas_change_queue_type); | |
1077 | EXPORT_SYMBOL_GPL(sas_bios_param); | |
79a5eb60 | 1078 | EXPORT_SYMBOL_GPL(sas_task_abort); |
dea22214 | 1079 | EXPORT_SYMBOL_GPL(sas_phy_reset); |
ad689233 | 1080 | EXPORT_SYMBOL_GPL(sas_eh_device_reset_handler); |
a9344e68 | 1081 | EXPORT_SYMBOL_GPL(sas_eh_bus_reset_handler); |
fa1c1e8f DW |
1082 | EXPORT_SYMBOL_GPL(sas_slave_alloc); |
1083 | EXPORT_SYMBOL_GPL(sas_target_destroy); | |
1084 | EXPORT_SYMBOL_GPL(sas_ioctl); |