Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * scsi_sysfs.c | |
3 | * | |
4 | * SCSI sysfs interface routines. | |
5 | * | |
6 | * Created to pull SCSI mid layer sysfs routines into one file. | |
7 | */ | |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/init.h> | |
11 | #include <linux/blkdev.h> | |
12 | #include <linux/device.h> | |
13 | ||
14 | #include <scsi/scsi.h> | |
15 | #include <scsi/scsi_device.h> | |
16 | #include <scsi/scsi_host.h> | |
17 | #include <scsi/scsi_tcq.h> | |
18 | #include <scsi/scsi_transport.h> | |
44818efb | 19 | #include <scsi/scsi_driver.h> |
1da177e4 LT |
20 | |
21 | #include "scsi_priv.h" | |
22 | #include "scsi_logging.h" | |
23 | ||
b0ed4336 HR |
24 | static struct device_type scsi_dev_type; |
25 | ||
0ad78200 | 26 | static const struct { |
1da177e4 LT |
27 | enum scsi_device_state value; |
28 | char *name; | |
29 | } sdev_states[] = { | |
30 | { SDEV_CREATED, "created" }, | |
31 | { SDEV_RUNNING, "running" }, | |
32 | { SDEV_CANCEL, "cancel" }, | |
33 | { SDEV_DEL, "deleted" }, | |
34 | { SDEV_QUIESCE, "quiesce" }, | |
35 | { SDEV_OFFLINE, "offline" }, | |
36 | { SDEV_BLOCK, "blocked" }, | |
37 | }; | |
38 | ||
39 | const char *scsi_device_state_name(enum scsi_device_state state) | |
40 | { | |
41 | int i; | |
42 | char *name = NULL; | |
43 | ||
6391a113 | 44 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
45 | if (sdev_states[i].value == state) { |
46 | name = sdev_states[i].name; | |
47 | break; | |
48 | } | |
49 | } | |
50 | return name; | |
51 | } | |
52 | ||
0ad78200 | 53 | static const struct { |
d3301874 MA |
54 | enum scsi_host_state value; |
55 | char *name; | |
56 | } shost_states[] = { | |
57 | { SHOST_CREATED, "created" }, | |
58 | { SHOST_RUNNING, "running" }, | |
59 | { SHOST_CANCEL, "cancel" }, | |
60 | { SHOST_DEL, "deleted" }, | |
61 | { SHOST_RECOVERY, "recovery" }, | |
939647ee JB |
62 | { SHOST_CANCEL_RECOVERY, "cancel/recovery" }, |
63 | { SHOST_DEL_RECOVERY, "deleted/recovery", }, | |
d3301874 MA |
64 | }; |
65 | const char *scsi_host_state_name(enum scsi_host_state state) | |
66 | { | |
67 | int i; | |
68 | char *name = NULL; | |
69 | ||
6391a113 | 70 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
71 | if (shost_states[i].value == state) { |
72 | name = shost_states[i].name; | |
73 | break; | |
74 | } | |
75 | } | |
76 | return name; | |
77 | } | |
78 | ||
1da177e4 LT |
79 | static int check_set(unsigned int *val, char *src) |
80 | { | |
81 | char *last; | |
82 | ||
83 | if (strncmp(src, "-", 20) == 0) { | |
84 | *val = SCAN_WILD_CARD; | |
85 | } else { | |
86 | /* | |
87 | * Doesn't check for int overflow | |
88 | */ | |
89 | *val = simple_strtoul(src, &last, 0); | |
90 | if (*last != '\0') | |
91 | return 1; | |
92 | } | |
93 | return 0; | |
94 | } | |
95 | ||
96 | static int scsi_scan(struct Scsi_Host *shost, const char *str) | |
97 | { | |
98 | char s1[15], s2[15], s3[15], junk; | |
99 | unsigned int channel, id, lun; | |
100 | int res; | |
101 | ||
102 | res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); | |
103 | if (res != 3) | |
104 | return -EINVAL; | |
105 | if (check_set(&channel, s1)) | |
106 | return -EINVAL; | |
107 | if (check_set(&id, s2)) | |
108 | return -EINVAL; | |
109 | if (check_set(&lun, s3)) | |
110 | return -EINVAL; | |
e02f3f59 CH |
111 | if (shost->transportt->user_scan) |
112 | res = shost->transportt->user_scan(shost, channel, id, lun); | |
113 | else | |
114 | res = scsi_scan_host_selected(shost, channel, id, lun, 1); | |
1da177e4 LT |
115 | return res; |
116 | } | |
117 | ||
118 | /* | |
119 | * shost_show_function: macro to create an attr function that can be used to | |
120 | * show a non-bit field. | |
121 | */ | |
122 | #define shost_show_function(name, field, format_string) \ | |
123 | static ssize_t \ | |
ee959b00 TJ |
124 | show_##name (struct device *dev, struct device_attribute *attr, \ |
125 | char *buf) \ | |
1da177e4 | 126 | { \ |
ee959b00 | 127 | struct Scsi_Host *shost = class_to_shost(dev); \ |
1da177e4 LT |
128 | return snprintf (buf, 20, format_string, shost->field); \ |
129 | } | |
130 | ||
131 | /* | |
132 | * shost_rd_attr: macro to create a function and attribute variable for a | |
133 | * read only field. | |
134 | */ | |
135 | #define shost_rd_attr2(name, field, format_string) \ | |
136 | shost_show_function(name, field, format_string) \ | |
ee959b00 | 137 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
1da177e4 LT |
138 | |
139 | #define shost_rd_attr(field, format_string) \ | |
140 | shost_rd_attr2(field, field, format_string) | |
141 | ||
142 | /* | |
143 | * Create the actual show/store functions and data structures. | |
144 | */ | |
145 | ||
ee959b00 TJ |
146 | static ssize_t |
147 | store_scan(struct device *dev, struct device_attribute *attr, | |
148 | const char *buf, size_t count) | |
1da177e4 | 149 | { |
ee959b00 | 150 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
151 | int res; |
152 | ||
153 | res = scsi_scan(shost, buf); | |
154 | if (res == 0) | |
155 | res = count; | |
156 | return res; | |
157 | }; | |
ee959b00 | 158 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
1da177e4 | 159 | |
d3301874 | 160 | static ssize_t |
ee959b00 TJ |
161 | store_shost_state(struct device *dev, struct device_attribute *attr, |
162 | const char *buf, size_t count) | |
d3301874 MA |
163 | { |
164 | int i; | |
ee959b00 | 165 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
166 | enum scsi_host_state state = 0; |
167 | ||
6391a113 | 168 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
169 | const int len = strlen(shost_states[i].name); |
170 | if (strncmp(shost_states[i].name, buf, len) == 0 && | |
171 | buf[len] == '\n') { | |
172 | state = shost_states[i].value; | |
173 | break; | |
174 | } | |
175 | } | |
176 | if (!state) | |
177 | return -EINVAL; | |
178 | ||
179 | if (scsi_host_set_state(shost, state)) | |
180 | return -EINVAL; | |
181 | return count; | |
182 | } | |
183 | ||
184 | static ssize_t | |
ee959b00 | 185 | show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
d3301874 | 186 | { |
ee959b00 | 187 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
188 | const char *name = scsi_host_state_name(shost->shost_state); |
189 | ||
190 | if (!name) | |
191 | return -EINVAL; | |
192 | ||
193 | return snprintf(buf, 20, "%s\n", name); | |
194 | } | |
195 | ||
ee959b00 TJ |
196 | /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
197 | struct device_attribute dev_attr_hstate = | |
198 | __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); | |
d3301874 | 199 | |
5dc2b89e FT |
200 | static ssize_t |
201 | show_shost_mode(unsigned int mode, char *buf) | |
202 | { | |
203 | ssize_t len = 0; | |
204 | ||
205 | if (mode & MODE_INITIATOR) | |
206 | len = sprintf(buf, "%s", "Initiator"); | |
207 | ||
208 | if (mode & MODE_TARGET) | |
209 | len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); | |
210 | ||
211 | len += sprintf(buf + len, "\n"); | |
212 | ||
213 | return len; | |
214 | } | |
215 | ||
ee959b00 TJ |
216 | static ssize_t |
217 | show_shost_supported_mode(struct device *dev, struct device_attribute *attr, | |
218 | char *buf) | |
5dc2b89e | 219 | { |
ee959b00 | 220 | struct Scsi_Host *shost = class_to_shost(dev); |
7a39ac3f | 221 | unsigned int supported_mode = shost->hostt->supported_mode; |
5dc2b89e | 222 | |
7a39ac3f JB |
223 | if (supported_mode == MODE_UNKNOWN) |
224 | /* by default this should be initiator */ | |
225 | supported_mode = MODE_INITIATOR; | |
226 | ||
227 | return show_shost_mode(supported_mode, buf); | |
5dc2b89e FT |
228 | } |
229 | ||
ee959b00 | 230 | static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
5dc2b89e | 231 | |
ee959b00 TJ |
232 | static ssize_t |
233 | show_shost_active_mode(struct device *dev, | |
234 | struct device_attribute *attr, char *buf) | |
5dc2b89e | 235 | { |
ee959b00 | 236 | struct Scsi_Host *shost = class_to_shost(dev); |
5dc2b89e FT |
237 | |
238 | if (shost->active_mode == MODE_UNKNOWN) | |
239 | return snprintf(buf, 20, "unknown\n"); | |
240 | else | |
241 | return show_shost_mode(shost->active_mode, buf); | |
242 | } | |
243 | ||
ee959b00 | 244 | static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
5dc2b89e | 245 | |
1da177e4 LT |
246 | shost_rd_attr(unique_id, "%u\n"); |
247 | shost_rd_attr(host_busy, "%hu\n"); | |
248 | shost_rd_attr(cmd_per_lun, "%hd\n"); | |
ed632da8 | 249 | shost_rd_attr(can_queue, "%hd\n"); |
1da177e4 LT |
250 | shost_rd_attr(sg_tablesize, "%hu\n"); |
251 | shost_rd_attr(unchecked_isa_dma, "%d\n"); | |
4469f987 MP |
252 | shost_rd_attr(prot_capabilities, "%u\n"); |
253 | shost_rd_attr(prot_guard_type, "%hd\n"); | |
1da177e4 LT |
254 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
255 | ||
f7120a4f HR |
256 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
257 | &dev_attr_unique_id.attr, | |
258 | &dev_attr_host_busy.attr, | |
259 | &dev_attr_cmd_per_lun.attr, | |
260 | &dev_attr_can_queue.attr, | |
261 | &dev_attr_sg_tablesize.attr, | |
262 | &dev_attr_unchecked_isa_dma.attr, | |
263 | &dev_attr_proc_name.attr, | |
264 | &dev_attr_scan.attr, | |
265 | &dev_attr_hstate.attr, | |
266 | &dev_attr_supported_mode.attr, | |
267 | &dev_attr_active_mode.attr, | |
4469f987 MP |
268 | &dev_attr_prot_capabilities.attr, |
269 | &dev_attr_prot_guard_type.attr, | |
f7120a4f HR |
270 | NULL |
271 | }; | |
272 | ||
273 | struct attribute_group scsi_shost_attr_group = { | |
274 | .attrs = scsi_sysfs_shost_attrs, | |
275 | }; | |
276 | ||
277 | struct attribute_group *scsi_sysfs_shost_attr_groups[] = { | |
278 | &scsi_shost_attr_group, | |
1da177e4 LT |
279 | NULL |
280 | }; | |
281 | ||
ee959b00 | 282 | static void scsi_device_cls_release(struct device *class_dev) |
1da177e4 LT |
283 | { |
284 | struct scsi_device *sdev; | |
285 | ||
286 | sdev = class_to_sdev(class_dev); | |
287 | put_device(&sdev->sdev_gendev); | |
288 | } | |
289 | ||
65f27f38 | 290 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
1da177e4 LT |
291 | { |
292 | struct scsi_device *sdev; | |
293 | struct device *parent; | |
294 | struct scsi_target *starget; | |
a341cd0f | 295 | struct list_head *this, *tmp; |
1da177e4 LT |
296 | unsigned long flags; |
297 | ||
65f27f38 DH |
298 | sdev = container_of(work, struct scsi_device, ew.work); |
299 | ||
300 | parent = sdev->sdev_gendev.parent; | |
1da177e4 LT |
301 | starget = to_scsi_target(parent); |
302 | ||
303 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
304 | starget->reap_ref++; | |
305 | list_del(&sdev->siblings); | |
306 | list_del(&sdev->same_target_siblings); | |
307 | list_del(&sdev->starved_entry); | |
308 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
309 | ||
a341cd0f JG |
310 | cancel_work_sync(&sdev->event_work); |
311 | ||
312 | list_for_each_safe(this, tmp, &sdev->event_list) { | |
313 | struct scsi_event *evt; | |
314 | ||
315 | evt = list_entry(this, struct scsi_event, node); | |
316 | list_del(&evt->node); | |
317 | kfree(evt); | |
318 | } | |
319 | ||
1da177e4 LT |
320 | if (sdev->request_queue) { |
321 | sdev->request_queue->queuedata = NULL; | |
65110b21 | 322 | /* user context needed to free queue */ |
1da177e4 | 323 | scsi_free_queue(sdev->request_queue); |
c2a9331c | 324 | /* temporary expedient, try to catch use of queue lock |
325 | * after free of sdev */ | |
326 | sdev->request_queue = NULL; | |
1da177e4 LT |
327 | } |
328 | ||
329 | scsi_target_reap(scsi_target(sdev)); | |
330 | ||
331 | kfree(sdev->inquiry); | |
332 | kfree(sdev); | |
333 | ||
334 | if (parent) | |
335 | put_device(parent); | |
336 | } | |
337 | ||
65110b21 JB |
338 | static void scsi_device_dev_release(struct device *dev) |
339 | { | |
ffedb452 | 340 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 341 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 342 | &sdp->ew); |
65110b21 JB |
343 | } |
344 | ||
52c1da39 | 345 | static struct class sdev_class = { |
1da177e4 | 346 | .name = "scsi_device", |
ee959b00 | 347 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
348 | }; |
349 | ||
350 | /* all probing is done in the individual ->probe routines */ | |
351 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
352 | { | |
b0ed4336 HR |
353 | struct scsi_device *sdp; |
354 | ||
355 | if (dev->type != &scsi_dev_type) | |
356 | return 0; | |
357 | ||
358 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
359 | if (sdp->no_uld_attach) |
360 | return 0; | |
361 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
362 | } | |
363 | ||
7eff2e7a | 364 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 365 | { |
1f42ea7b JB |
366 | struct scsi_device *sdev; |
367 | ||
368 | if (dev->type != &scsi_dev_type) | |
369 | return 0; | |
370 | ||
371 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 372 | |
7eff2e7a | 373 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
374 | return 0; |
375 | } | |
376 | ||
9b847548 JA |
377 | static int scsi_bus_suspend(struct device * dev, pm_message_t state) |
378 | { | |
b0ed4336 HR |
379 | struct device_driver *drv; |
380 | struct scsi_device *sdev; | |
9b847548 JA |
381 | int err; |
382 | ||
b0ed4336 HR |
383 | if (dev->type != &scsi_dev_type) |
384 | return 0; | |
385 | ||
386 | drv = dev->driver; | |
387 | sdev = to_scsi_device(dev); | |
388 | ||
9b847548 JA |
389 | err = scsi_device_quiesce(sdev); |
390 | if (err) | |
391 | return err; | |
392 | ||
c3c94c5a TH |
393 | if (drv && drv->suspend) { |
394 | err = drv->suspend(dev, state); | |
395 | if (err) | |
396 | return err; | |
397 | } | |
398 | ||
c3c94c5a | 399 | return 0; |
9b847548 JA |
400 | } |
401 | ||
402 | static int scsi_bus_resume(struct device * dev) | |
403 | { | |
b0ed4336 HR |
404 | struct device_driver *drv; |
405 | struct scsi_device *sdev; | |
1dfcda06 | 406 | int err = 0; |
9b847548 | 407 | |
b0ed4336 HR |
408 | if (dev->type != &scsi_dev_type) |
409 | return 0; | |
410 | ||
411 | drv = dev->driver; | |
412 | sdev = to_scsi_device(dev); | |
413 | ||
c3c94c5a | 414 | if (drv && drv->resume) |
1dfcda06 | 415 | err = drv->resume(dev); |
c3c94c5a | 416 | |
9b847548 | 417 | scsi_device_resume(sdev); |
c3c94c5a | 418 | |
1dfcda06 | 419 | return err; |
9b847548 JA |
420 | } |
421 | ||
751bf4d7 JB |
422 | static int scsi_bus_remove(struct device *dev) |
423 | { | |
424 | struct device_driver *drv = dev->driver; | |
425 | struct scsi_device *sdev = to_scsi_device(dev); | |
426 | int err = 0; | |
427 | ||
428 | /* reset the prep_fn back to the default since the | |
429 | * driver may have altered it and it's being removed */ | |
430 | blk_queue_prep_rq(sdev->request_queue, scsi_prep_fn); | |
431 | ||
432 | if (drv && drv->remove) | |
433 | err = drv->remove(dev); | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
1da177e4 LT |
438 | struct bus_type scsi_bus_type = { |
439 | .name = "scsi", | |
440 | .match = scsi_bus_match, | |
d7b8bcb0 | 441 | .uevent = scsi_bus_uevent, |
9b847548 JA |
442 | .suspend = scsi_bus_suspend, |
443 | .resume = scsi_bus_resume, | |
751bf4d7 | 444 | .remove = scsi_bus_remove, |
1da177e4 | 445 | }; |
a6a8d9f8 | 446 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
447 | |
448 | int scsi_sysfs_register(void) | |
449 | { | |
450 | int error; | |
451 | ||
452 | error = bus_register(&scsi_bus_type); | |
453 | if (!error) { | |
454 | error = class_register(&sdev_class); | |
455 | if (error) | |
456 | bus_unregister(&scsi_bus_type); | |
457 | } | |
458 | ||
459 | return error; | |
460 | } | |
461 | ||
462 | void scsi_sysfs_unregister(void) | |
463 | { | |
464 | class_unregister(&sdev_class); | |
465 | bus_unregister(&scsi_bus_type); | |
466 | } | |
467 | ||
468 | /* | |
469 | * sdev_show_function: macro to create an attr function that can be used to | |
470 | * show a non-bit field. | |
471 | */ | |
472 | #define sdev_show_function(field, format_string) \ | |
473 | static ssize_t \ | |
ee959b00 TJ |
474 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
475 | char *buf) \ | |
1da177e4 LT |
476 | { \ |
477 | struct scsi_device *sdev; \ | |
478 | sdev = to_scsi_device(dev); \ | |
479 | return snprintf (buf, 20, format_string, sdev->field); \ | |
480 | } \ | |
481 | ||
482 | /* | |
483 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
484 | * read only field. | |
485 | */ | |
486 | #define sdev_rd_attr(field, format_string) \ | |
487 | sdev_show_function(field, format_string) \ | |
488 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
489 | ||
490 | ||
491 | /* | |
492 | * sdev_rd_attr: create a function and attribute variable for a | |
493 | * read/write field. | |
494 | */ | |
495 | #define sdev_rw_attr(field, format_string) \ | |
496 | sdev_show_function(field, format_string) \ | |
497 | \ | |
498 | static ssize_t \ | |
ee959b00 TJ |
499 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
500 | const char *buf, size_t count) \ | |
1da177e4 LT |
501 | { \ |
502 | struct scsi_device *sdev; \ | |
503 | sdev = to_scsi_device(dev); \ | |
504 | snscanf (buf, 20, format_string, &sdev->field); \ | |
505 | return count; \ | |
506 | } \ | |
507 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
508 | ||
509 | /* Currently we don't export bit fields, but we might in future, | |
510 | * so leave this code in */ | |
511 | #if 0 | |
512 | /* | |
513 | * sdev_rd_attr: create a function and attribute variable for a | |
514 | * read/write bit field. | |
515 | */ | |
516 | #define sdev_rw_attr_bit(field) \ | |
517 | sdev_show_function(field, "%d\n") \ | |
518 | \ | |
519 | static ssize_t \ | |
ee959b00 TJ |
520 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
521 | const char *buf, size_t count) \ | |
1da177e4 LT |
522 | { \ |
523 | int ret; \ | |
524 | struct scsi_device *sdev; \ | |
525 | ret = scsi_sdev_check_buf_bit(buf); \ | |
526 | if (ret >= 0) { \ | |
527 | sdev = to_scsi_device(dev); \ | |
528 | sdev->field = ret; \ | |
529 | ret = count; \ | |
530 | } \ | |
531 | return ret; \ | |
532 | } \ | |
533 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
534 | ||
535 | /* | |
536 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
537 | * else return -EINVAL. | |
538 | */ | |
539 | static int scsi_sdev_check_buf_bit(const char *buf) | |
540 | { | |
541 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
542 | if (buf[0] == '1') | |
543 | return 1; | |
544 | else if (buf[0] == '0') | |
545 | return 0; | |
546 | else | |
547 | return -EINVAL; | |
548 | } else | |
549 | return -EINVAL; | |
550 | } | |
551 | #endif | |
552 | /* | |
553 | * Create the actual show/store functions and data structures. | |
554 | */ | |
555 | sdev_rd_attr (device_blocked, "%d\n"); | |
556 | sdev_rd_attr (queue_depth, "%d\n"); | |
557 | sdev_rd_attr (type, "%d\n"); | |
558 | sdev_rd_attr (scsi_level, "%d\n"); | |
559 | sdev_rd_attr (vendor, "%.8s\n"); | |
560 | sdev_rd_attr (model, "%.16s\n"); | |
561 | sdev_rd_attr (rev, "%.4s\n"); | |
562 | ||
242f9dcb JA |
563 | /* |
564 | * TODO: can we make these symlinks to the block layer ones? | |
565 | */ | |
1da177e4 | 566 | static ssize_t |
10523b3b | 567 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
568 | { |
569 | struct scsi_device *sdev; | |
570 | sdev = to_scsi_device(dev); | |
242f9dcb | 571 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
572 | } |
573 | ||
574 | static ssize_t | |
ee959b00 TJ |
575 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
576 | const char *buf, size_t count) | |
1da177e4 LT |
577 | { |
578 | struct scsi_device *sdev; | |
579 | int timeout; | |
580 | sdev = to_scsi_device(dev); | |
581 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 582 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
583 | return count; |
584 | } | |
585 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
586 | ||
587 | static ssize_t | |
ee959b00 TJ |
588 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
589 | const char *buf, size_t count) | |
1da177e4 LT |
590 | { |
591 | scsi_rescan_device(dev); | |
592 | return count; | |
593 | } | |
594 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
595 | ||
d9a9cdfb AS |
596 | static void sdev_store_delete_callback(struct device *dev) |
597 | { | |
598 | scsi_remove_device(to_scsi_device(dev)); | |
599 | } | |
600 | ||
ee959b00 TJ |
601 | static ssize_t |
602 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
603 | const char *buf, size_t count) | |
1da177e4 | 604 | { |
d9a9cdfb AS |
605 | int rc; |
606 | ||
607 | /* An attribute cannot be unregistered by one of its own methods, | |
608 | * so we have to use this roundabout approach. | |
609 | */ | |
610 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
611 | if (rc) | |
612 | count = rc; | |
1da177e4 LT |
613 | return count; |
614 | }; | |
615 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
616 | ||
617 | static ssize_t | |
ee959b00 TJ |
618 | store_state_field(struct device *dev, struct device_attribute *attr, |
619 | const char *buf, size_t count) | |
1da177e4 LT |
620 | { |
621 | int i; | |
622 | struct scsi_device *sdev = to_scsi_device(dev); | |
623 | enum scsi_device_state state = 0; | |
624 | ||
6391a113 | 625 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
626 | const int len = strlen(sdev_states[i].name); |
627 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
628 | buf[len] == '\n') { | |
629 | state = sdev_states[i].value; | |
630 | break; | |
631 | } | |
632 | } | |
633 | if (!state) | |
634 | return -EINVAL; | |
635 | ||
636 | if (scsi_device_set_state(sdev, state)) | |
637 | return -EINVAL; | |
638 | return count; | |
639 | } | |
640 | ||
641 | static ssize_t | |
10523b3b | 642 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
643 | { |
644 | struct scsi_device *sdev = to_scsi_device(dev); | |
645 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
646 | ||
647 | if (!name) | |
648 | return -EINVAL; | |
649 | ||
650 | return snprintf(buf, 20, "%s\n", name); | |
651 | } | |
652 | ||
653 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
654 | ||
655 | static ssize_t | |
ee959b00 TJ |
656 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
657 | char *buf) | |
1da177e4 LT |
658 | { |
659 | struct scsi_device *sdev = to_scsi_device(dev); | |
660 | const char *name = "none"; | |
661 | ||
662 | if (sdev->ordered_tags) | |
663 | name = "ordered"; | |
664 | else if (sdev->simple_tags) | |
665 | name = "simple"; | |
666 | ||
667 | return snprintf(buf, 20, "%s\n", name); | |
668 | } | |
669 | ||
670 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
671 | ||
672 | static ssize_t | |
ee959b00 | 673 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
674 | { |
675 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
676 | } | |
677 | ||
678 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
679 | ||
680 | #define show_sdev_iostat(field) \ | |
681 | static ssize_t \ | |
ee959b00 TJ |
682 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
683 | char *buf) \ | |
1da177e4 LT |
684 | { \ |
685 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
686 | unsigned long long count = atomic_read(&sdev->field); \ | |
687 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
688 | } \ | |
689 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
690 | ||
691 | show_sdev_iostat(iorequest_cnt); | |
692 | show_sdev_iostat(iodone_cnt); | |
693 | show_sdev_iostat(ioerr_cnt); | |
694 | ||
d7b8bcb0 MT |
695 | static ssize_t |
696 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
697 | { | |
698 | struct scsi_device *sdev; | |
699 | sdev = to_scsi_device(dev); | |
700 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
701 | } | |
702 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 703 | |
a341cd0f JG |
704 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
705 | static ssize_t \ | |
706 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 707 | char *buf) \ |
a341cd0f JG |
708 | { \ |
709 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
710 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
711 | return snprintf(buf, 20, "%d\n", val); \ | |
712 | } | |
713 | ||
714 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
715 | static ssize_t \ | |
ee959b00 | 716 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
717 | const char *buf, size_t count) \ |
718 | { \ | |
719 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
720 | int val = simple_strtoul(buf, NULL, 0); \ | |
721 | if (val == 0) \ | |
722 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
723 | else if (val == 1) \ | |
724 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
725 | else \ | |
726 | return -EINVAL; \ | |
727 | return count; \ | |
728 | } | |
729 | ||
730 | #define DECLARE_EVT(name, Cap_name) \ | |
731 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
732 | DECLARE_EVT_STORE(name, Cap_name) \ | |
733 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
734 | sdev_store_evt_##name); | |
735 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
736 | ||
737 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
738 | ||
1da177e4 | 739 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
740 | static struct attribute *scsi_sdev_attrs[] = { |
741 | &dev_attr_device_blocked.attr, | |
742 | &dev_attr_type.attr, | |
743 | &dev_attr_scsi_level.attr, | |
744 | &dev_attr_vendor.attr, | |
745 | &dev_attr_model.attr, | |
746 | &dev_attr_rev.attr, | |
747 | &dev_attr_rescan.attr, | |
748 | &dev_attr_delete.attr, | |
749 | &dev_attr_state.attr, | |
750 | &dev_attr_timeout.attr, | |
751 | &dev_attr_iocounterbits.attr, | |
752 | &dev_attr_iorequest_cnt.attr, | |
753 | &dev_attr_iodone_cnt.attr, | |
754 | &dev_attr_ioerr_cnt.attr, | |
755 | &dev_attr_modalias.attr, | |
a341cd0f | 756 | REF_EVT(media_change), |
bfd12944 KS |
757 | NULL |
758 | }; | |
759 | ||
760 | static struct attribute_group scsi_sdev_attr_group = { | |
761 | .attrs = scsi_sdev_attrs, | |
762 | }; | |
763 | ||
764 | static struct attribute_group *scsi_sdev_attr_groups[] = { | |
765 | &scsi_sdev_attr_group, | |
1da177e4 LT |
766 | NULL |
767 | }; | |
768 | ||
ee959b00 TJ |
769 | static ssize_t |
770 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
771 | const char *buf, size_t count) | |
1da177e4 LT |
772 | { |
773 | int depth, retval; | |
774 | struct scsi_device *sdev = to_scsi_device(dev); | |
775 | struct scsi_host_template *sht = sdev->host->hostt; | |
776 | ||
777 | if (!sht->change_queue_depth) | |
778 | return -EINVAL; | |
779 | ||
780 | depth = simple_strtoul(buf, NULL, 0); | |
781 | ||
782 | if (depth < 1) | |
783 | return -EINVAL; | |
784 | ||
785 | retval = sht->change_queue_depth(sdev, depth); | |
786 | if (retval < 0) | |
787 | return retval; | |
788 | ||
789 | return count; | |
790 | } | |
791 | ||
792 | static struct device_attribute sdev_attr_queue_depth_rw = | |
793 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
794 | sdev_store_queue_depth_rw); | |
795 | ||
ee959b00 TJ |
796 | static ssize_t |
797 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
798 | const char *buf, size_t count) | |
1da177e4 LT |
799 | { |
800 | struct scsi_device *sdev = to_scsi_device(dev); | |
801 | struct scsi_host_template *sht = sdev->host->hostt; | |
802 | int tag_type = 0, retval; | |
803 | int prev_tag_type = scsi_get_tag_type(sdev); | |
804 | ||
805 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
806 | return -EINVAL; | |
807 | ||
808 | if (strncmp(buf, "ordered", 7) == 0) | |
809 | tag_type = MSG_ORDERED_TAG; | |
810 | else if (strncmp(buf, "simple", 6) == 0) | |
811 | tag_type = MSG_SIMPLE_TAG; | |
812 | else if (strncmp(buf, "none", 4) != 0) | |
813 | return -EINVAL; | |
814 | ||
815 | if (tag_type == prev_tag_type) | |
816 | return count; | |
817 | ||
818 | retval = sht->change_queue_type(sdev, tag_type); | |
819 | if (retval < 0) | |
820 | return retval; | |
821 | ||
822 | return count; | |
823 | } | |
824 | ||
643eb2d9 JB |
825 | static int scsi_target_add(struct scsi_target *starget) |
826 | { | |
827 | int error; | |
828 | ||
829 | if (starget->state != STARGET_CREATED) | |
830 | return 0; | |
831 | ||
832 | error = device_add(&starget->dev); | |
833 | if (error) { | |
834 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
835 | get_device(&starget->dev); | |
836 | scsi_target_reap(starget); | |
837 | put_device(&starget->dev); | |
838 | return error; | |
839 | } | |
840 | transport_add_device(&starget->dev); | |
841 | starget->state = STARGET_RUNNING; | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
1da177e4 LT |
846 | static struct device_attribute sdev_attr_queue_type_rw = |
847 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
848 | sdev_store_queue_type_rw); | |
849 | ||
1da177e4 LT |
850 | /** |
851 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
852 | * @sdev: scsi_device to add | |
853 | * | |
854 | * Return value: | |
855 | * 0 on Success / non-zero on Failure | |
856 | **/ | |
857 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
858 | { | |
859 | int error, i; | |
80ed71ce | 860 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 861 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 LT |
862 | |
863 | if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0) | |
864 | return error; | |
865 | ||
643eb2d9 JB |
866 | error = scsi_target_add(starget); |
867 | if (error) | |
868 | return error; | |
869 | ||
870 | transport_configure_device(&starget->dev); | |
1da177e4 LT |
871 | error = device_add(&sdev->sdev_gendev); |
872 | if (error) { | |
873 | put_device(sdev->sdev_gendev.parent); | |
874 | printk(KERN_INFO "error 1\n"); | |
875 | return error; | |
876 | } | |
ee959b00 | 877 | error = device_add(&sdev->sdev_dev); |
1da177e4 LT |
878 | if (error) { |
879 | printk(KERN_INFO "error 2\n"); | |
880 | goto clean_device; | |
881 | } | |
882 | ||
ee959b00 | 883 | /* take a reference for the sdev_dev; this is |
1da177e4 LT |
884 | * released by the sdev_class .release */ |
885 | get_device(&sdev->sdev_gendev); | |
80ed71ce | 886 | |
bfd12944 KS |
887 | /* create queue files, which may be writable, depending on the host */ |
888 | if (sdev->host->hostt->change_queue_depth) | |
889 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw); | |
890 | else | |
891 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
892 | if (error) { | |
893 | __scsi_remove_device(sdev); | |
894 | goto out; | |
895 | } | |
896 | if (sdev->host->hostt->change_queue_type) | |
897 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
898 | else | |
899 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
900 | if (error) { | |
901 | __scsi_remove_device(sdev); | |
902 | goto out; | |
903 | } | |
904 | ||
97f46ae4 | 905 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
906 | |
907 | if (error) | |
908 | sdev_printk(KERN_INFO, sdev, | |
909 | "Failed to register bsg queue, errno=%d\n", error); | |
910 | ||
911 | /* we're treating error on bsg register as non-fatal, so pretend | |
912 | * nothing went wrong */ | |
913 | error = 0; | |
914 | ||
bfd12944 | 915 | /* add additional host specific attributes */ |
1da177e4 LT |
916 | if (sdev->host->hostt->sdev_attrs) { |
917 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 918 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 LT |
919 | sdev->host->hostt->sdev_attrs[i]); |
920 | if (error) { | |
903f4fed | 921 | __scsi_remove_device(sdev); |
1da177e4 LT |
922 | goto out; |
923 | } | |
924 | } | |
925 | } | |
1da177e4 LT |
926 | |
927 | transport_add_device(&sdev->sdev_gendev); | |
928 | out: | |
929 | return error; | |
930 | ||
931 | clean_device: | |
932 | scsi_device_set_state(sdev, SDEV_CANCEL); | |
933 | ||
934 | device_del(&sdev->sdev_gendev); | |
935 | transport_destroy_device(&sdev->sdev_gendev); | |
936 | put_device(&sdev->sdev_gendev); | |
937 | ||
938 | return error; | |
939 | } | |
940 | ||
903f4fed | 941 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 942 | { |
df133c21 JB |
943 | struct device *dev = &sdev->sdev_gendev; |
944 | ||
1da177e4 | 945 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) |
903f4fed | 946 | return; |
1da177e4 | 947 | |
0feed274 | 948 | bsg_unregister_queue(sdev->request_queue); |
ee959b00 | 949 | device_unregister(&sdev->sdev_dev); |
df133c21 JB |
950 | transport_remove_device(dev); |
951 | device_del(dev); | |
1da177e4 LT |
952 | scsi_device_set_state(sdev, SDEV_DEL); |
953 | if (sdev->host->hostt->slave_destroy) | |
954 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 JB |
955 | transport_destroy_device(dev); |
956 | put_device(dev); | |
903f4fed AS |
957 | } |
958 | ||
959 | /** | |
960 | * scsi_remove_device - unregister a device from the scsi bus | |
961 | * @sdev: scsi_device to unregister | |
962 | **/ | |
963 | void scsi_remove_device(struct scsi_device *sdev) | |
964 | { | |
54195002 AS |
965 | struct Scsi_Host *shost = sdev->host; |
966 | ||
0b950672 | 967 | mutex_lock(&shost->scan_mutex); |
903f4fed | 968 | __scsi_remove_device(sdev); |
0b950672 | 969 | mutex_unlock(&shost->scan_mutex); |
1da177e4 LT |
970 | } |
971 | EXPORT_SYMBOL(scsi_remove_device); | |
972 | ||
44818efb | 973 | static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4 LT |
974 | { |
975 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
976 | unsigned long flags; | |
a64358db | 977 | struct scsi_device *sdev; |
1da177e4 LT |
978 | |
979 | spin_lock_irqsave(shost->host_lock, flags); | |
980 | starget->reap_ref++; | |
a64358db AS |
981 | restart: |
982 | list_for_each_entry(sdev, &shost->__devices, siblings) { | |
1da177e4 | 983 | if (sdev->channel != starget->channel || |
a64358db AS |
984 | sdev->id != starget->id || |
985 | sdev->sdev_state == SDEV_DEL) | |
1da177e4 LT |
986 | continue; |
987 | spin_unlock_irqrestore(shost->host_lock, flags); | |
988 | scsi_remove_device(sdev); | |
989 | spin_lock_irqsave(shost->host_lock, flags); | |
a64358db | 990 | goto restart; |
1da177e4 LT |
991 | } |
992 | spin_unlock_irqrestore(shost->host_lock, flags); | |
993 | scsi_target_reap(starget); | |
994 | } | |
995 | ||
20b1e674 | 996 | static int __remove_child (struct device * dev, void * data) |
997 | { | |
998 | if (scsi_is_target_device(dev)) | |
999 | __scsi_remove_target(to_scsi_target(dev)); | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1da177e4 LT |
1003 | /** |
1004 | * scsi_remove_target - try to remove a target and all its devices | |
1005 | * @dev: generic starget or parent of generic stargets to be removed | |
1006 | * | |
1007 | * Note: This is slightly racy. It is possible that if the user | |
1008 | * requests the addition of another device then the target won't be | |
1009 | * removed. | |
1010 | */ | |
1011 | void scsi_remove_target(struct device *dev) | |
1012 | { | |
20b1e674 | 1013 | struct device *rdev; |
1da177e4 LT |
1014 | |
1015 | if (scsi_is_target_device(dev)) { | |
1016 | __scsi_remove_target(to_scsi_target(dev)); | |
1017 | return; | |
1018 | } | |
1019 | ||
1020 | rdev = get_device(dev); | |
20b1e674 | 1021 | device_for_each_child(dev, NULL, __remove_child); |
1da177e4 LT |
1022 | put_device(rdev); |
1023 | } | |
1024 | EXPORT_SYMBOL(scsi_remove_target); | |
1025 | ||
1026 | int scsi_register_driver(struct device_driver *drv) | |
1027 | { | |
1028 | drv->bus = &scsi_bus_type; | |
1029 | ||
1030 | return driver_register(drv); | |
1031 | } | |
1032 | EXPORT_SYMBOL(scsi_register_driver); | |
1033 | ||
1034 | int scsi_register_interface(struct class_interface *intf) | |
1035 | { | |
1036 | intf->class = &sdev_class; | |
1037 | ||
1038 | return class_interface_register(intf); | |
1039 | } | |
1040 | EXPORT_SYMBOL(scsi_register_interface); | |
1041 | ||
1da177e4 LT |
1042 | /** |
1043 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1044 | * @shost: scsi host struct to add to subsystem | |
1045 | * @dev: parent struct device pointer | |
1046 | **/ | |
1047 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1048 | { | |
1049 | int error, i; | |
1050 | ||
f7120a4f | 1051 | /* add host specific attributes */ |
1da177e4 LT |
1052 | if (shost->hostt->shost_attrs) { |
1053 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1054 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1055 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1056 | if (error) |
1057 | return error; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1062 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1063 | return 0; |
1064 | } | |
1065 | ||
bfd12944 KS |
1066 | static struct device_type scsi_dev_type = { |
1067 | .name = "scsi_device", | |
1068 | .release = scsi_device_dev_release, | |
1069 | .groups = scsi_sdev_attr_groups, | |
1070 | }; | |
1071 | ||
1da177e4 LT |
1072 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1073 | { | |
1074 | unsigned long flags; | |
1075 | struct Scsi_Host *shost = sdev->host; | |
1076 | struct scsi_target *starget = sdev->sdev_target; | |
1077 | ||
1078 | device_initialize(&sdev->sdev_gendev); | |
1079 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1080 | sdev->sdev_gendev.type = &scsi_dev_type; |
1da177e4 LT |
1081 | sprintf(sdev->sdev_gendev.bus_id,"%d:%d:%d:%d", |
1082 | sdev->host->host_no, sdev->channel, sdev->id, | |
1083 | sdev->lun); | |
1084 | ||
ee959b00 TJ |
1085 | device_initialize(&sdev->sdev_dev); |
1086 | sdev->sdev_dev.parent = &sdev->sdev_gendev; | |
1087 | sdev->sdev_dev.class = &sdev_class; | |
1088 | snprintf(sdev->sdev_dev.bus_id, BUS_ID_SIZE, | |
1da177e4 LT |
1089 | "%d:%d:%d:%d", sdev->host->host_no, |
1090 | sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1091 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1092 | transport_setup_device(&sdev->sdev_gendev); |
1093 | spin_lock_irqsave(shost->host_lock, flags); | |
1094 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1095 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1096 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1097 | } | |
1098 | ||
1099 | int scsi_is_sdev_device(const struct device *dev) | |
1100 | { | |
13ba9bcb | 1101 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1102 | } |
1103 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1104 | ||
1105 | /* A blank transport template that is used in drivers that don't | |
1106 | * yet implement Transport Attributes */ | |
1107 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |