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" }, | |
6f4267e3 | 37 | { SDEV_CREATED_BLOCK, "created-blocked" }, |
1da177e4 LT |
38 | }; |
39 | ||
40 | const char *scsi_device_state_name(enum scsi_device_state state) | |
41 | { | |
42 | int i; | |
43 | char *name = NULL; | |
44 | ||
6391a113 | 45 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
46 | if (sdev_states[i].value == state) { |
47 | name = sdev_states[i].name; | |
48 | break; | |
49 | } | |
50 | } | |
51 | return name; | |
52 | } | |
53 | ||
0ad78200 | 54 | static const struct { |
d3301874 MA |
55 | enum scsi_host_state value; |
56 | char *name; | |
57 | } shost_states[] = { | |
58 | { SHOST_CREATED, "created" }, | |
59 | { SHOST_RUNNING, "running" }, | |
60 | { SHOST_CANCEL, "cancel" }, | |
61 | { SHOST_DEL, "deleted" }, | |
62 | { SHOST_RECOVERY, "recovery" }, | |
939647ee JB |
63 | { SHOST_CANCEL_RECOVERY, "cancel/recovery" }, |
64 | { SHOST_DEL_RECOVERY, "deleted/recovery", }, | |
d3301874 MA |
65 | }; |
66 | const char *scsi_host_state_name(enum scsi_host_state state) | |
67 | { | |
68 | int i; | |
69 | char *name = NULL; | |
70 | ||
6391a113 | 71 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
72 | if (shost_states[i].value == state) { |
73 | name = shost_states[i].name; | |
74 | break; | |
75 | } | |
76 | } | |
77 | return name; | |
78 | } | |
79 | ||
1da177e4 LT |
80 | static int check_set(unsigned int *val, char *src) |
81 | { | |
82 | char *last; | |
83 | ||
84 | if (strncmp(src, "-", 20) == 0) { | |
85 | *val = SCAN_WILD_CARD; | |
86 | } else { | |
87 | /* | |
88 | * Doesn't check for int overflow | |
89 | */ | |
90 | *val = simple_strtoul(src, &last, 0); | |
91 | if (*last != '\0') | |
92 | return 1; | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static int scsi_scan(struct Scsi_Host *shost, const char *str) | |
98 | { | |
99 | char s1[15], s2[15], s3[15], junk; | |
100 | unsigned int channel, id, lun; | |
101 | int res; | |
102 | ||
103 | res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); | |
104 | if (res != 3) | |
105 | return -EINVAL; | |
106 | if (check_set(&channel, s1)) | |
107 | return -EINVAL; | |
108 | if (check_set(&id, s2)) | |
109 | return -EINVAL; | |
110 | if (check_set(&lun, s3)) | |
111 | return -EINVAL; | |
e02f3f59 CH |
112 | if (shost->transportt->user_scan) |
113 | res = shost->transportt->user_scan(shost, channel, id, lun); | |
114 | else | |
115 | res = scsi_scan_host_selected(shost, channel, id, lun, 1); | |
1da177e4 LT |
116 | return res; |
117 | } | |
118 | ||
119 | /* | |
120 | * shost_show_function: macro to create an attr function that can be used to | |
121 | * show a non-bit field. | |
122 | */ | |
123 | #define shost_show_function(name, field, format_string) \ | |
124 | static ssize_t \ | |
ee959b00 TJ |
125 | show_##name (struct device *dev, struct device_attribute *attr, \ |
126 | char *buf) \ | |
1da177e4 | 127 | { \ |
ee959b00 | 128 | struct Scsi_Host *shost = class_to_shost(dev); \ |
1da177e4 LT |
129 | return snprintf (buf, 20, format_string, shost->field); \ |
130 | } | |
131 | ||
132 | /* | |
133 | * shost_rd_attr: macro to create a function and attribute variable for a | |
134 | * read only field. | |
135 | */ | |
136 | #define shost_rd_attr2(name, field, format_string) \ | |
137 | shost_show_function(name, field, format_string) \ | |
ee959b00 | 138 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
1da177e4 LT |
139 | |
140 | #define shost_rd_attr(field, format_string) \ | |
141 | shost_rd_attr2(field, field, format_string) | |
142 | ||
143 | /* | |
144 | * Create the actual show/store functions and data structures. | |
145 | */ | |
146 | ||
ee959b00 TJ |
147 | static ssize_t |
148 | store_scan(struct device *dev, struct device_attribute *attr, | |
149 | const char *buf, size_t count) | |
1da177e4 | 150 | { |
ee959b00 | 151 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
152 | int res; |
153 | ||
154 | res = scsi_scan(shost, buf); | |
155 | if (res == 0) | |
156 | res = count; | |
157 | return res; | |
158 | }; | |
ee959b00 | 159 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
1da177e4 | 160 | |
d3301874 | 161 | static ssize_t |
ee959b00 TJ |
162 | store_shost_state(struct device *dev, struct device_attribute *attr, |
163 | const char *buf, size_t count) | |
d3301874 MA |
164 | { |
165 | int i; | |
ee959b00 | 166 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
167 | enum scsi_host_state state = 0; |
168 | ||
6391a113 | 169 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
170 | const int len = strlen(shost_states[i].name); |
171 | if (strncmp(shost_states[i].name, buf, len) == 0 && | |
172 | buf[len] == '\n') { | |
173 | state = shost_states[i].value; | |
174 | break; | |
175 | } | |
176 | } | |
177 | if (!state) | |
178 | return -EINVAL; | |
179 | ||
180 | if (scsi_host_set_state(shost, state)) | |
181 | return -EINVAL; | |
182 | return count; | |
183 | } | |
184 | ||
185 | static ssize_t | |
ee959b00 | 186 | show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
d3301874 | 187 | { |
ee959b00 | 188 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
189 | const char *name = scsi_host_state_name(shost->shost_state); |
190 | ||
191 | if (!name) | |
192 | return -EINVAL; | |
193 | ||
194 | return snprintf(buf, 20, "%s\n", name); | |
195 | } | |
196 | ||
ee959b00 TJ |
197 | /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
198 | struct device_attribute dev_attr_hstate = | |
199 | __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); | |
d3301874 | 200 | |
5dc2b89e FT |
201 | static ssize_t |
202 | show_shost_mode(unsigned int mode, char *buf) | |
203 | { | |
204 | ssize_t len = 0; | |
205 | ||
206 | if (mode & MODE_INITIATOR) | |
207 | len = sprintf(buf, "%s", "Initiator"); | |
208 | ||
209 | if (mode & MODE_TARGET) | |
210 | len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); | |
211 | ||
212 | len += sprintf(buf + len, "\n"); | |
213 | ||
214 | return len; | |
215 | } | |
216 | ||
ee959b00 TJ |
217 | static ssize_t |
218 | show_shost_supported_mode(struct device *dev, struct device_attribute *attr, | |
219 | char *buf) | |
5dc2b89e | 220 | { |
ee959b00 | 221 | struct Scsi_Host *shost = class_to_shost(dev); |
7a39ac3f | 222 | unsigned int supported_mode = shost->hostt->supported_mode; |
5dc2b89e | 223 | |
7a39ac3f JB |
224 | if (supported_mode == MODE_UNKNOWN) |
225 | /* by default this should be initiator */ | |
226 | supported_mode = MODE_INITIATOR; | |
227 | ||
228 | return show_shost_mode(supported_mode, buf); | |
5dc2b89e FT |
229 | } |
230 | ||
ee959b00 | 231 | static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
5dc2b89e | 232 | |
ee959b00 TJ |
233 | static ssize_t |
234 | show_shost_active_mode(struct device *dev, | |
235 | struct device_attribute *attr, char *buf) | |
5dc2b89e | 236 | { |
ee959b00 | 237 | struct Scsi_Host *shost = class_to_shost(dev); |
5dc2b89e FT |
238 | |
239 | if (shost->active_mode == MODE_UNKNOWN) | |
240 | return snprintf(buf, 20, "unknown\n"); | |
241 | else | |
242 | return show_shost_mode(shost->active_mode, buf); | |
243 | } | |
244 | ||
ee959b00 | 245 | static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
5dc2b89e | 246 | |
1da177e4 LT |
247 | shost_rd_attr(unique_id, "%u\n"); |
248 | shost_rd_attr(host_busy, "%hu\n"); | |
249 | shost_rd_attr(cmd_per_lun, "%hd\n"); | |
ed632da8 | 250 | shost_rd_attr(can_queue, "%hd\n"); |
1da177e4 LT |
251 | shost_rd_attr(sg_tablesize, "%hu\n"); |
252 | shost_rd_attr(unchecked_isa_dma, "%d\n"); | |
4469f987 MP |
253 | shost_rd_attr(prot_capabilities, "%u\n"); |
254 | shost_rd_attr(prot_guard_type, "%hd\n"); | |
1da177e4 LT |
255 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
256 | ||
f7120a4f HR |
257 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
258 | &dev_attr_unique_id.attr, | |
259 | &dev_attr_host_busy.attr, | |
260 | &dev_attr_cmd_per_lun.attr, | |
261 | &dev_attr_can_queue.attr, | |
262 | &dev_attr_sg_tablesize.attr, | |
263 | &dev_attr_unchecked_isa_dma.attr, | |
264 | &dev_attr_proc_name.attr, | |
265 | &dev_attr_scan.attr, | |
266 | &dev_attr_hstate.attr, | |
267 | &dev_attr_supported_mode.attr, | |
268 | &dev_attr_active_mode.attr, | |
4469f987 MP |
269 | &dev_attr_prot_capabilities.attr, |
270 | &dev_attr_prot_guard_type.attr, | |
f7120a4f HR |
271 | NULL |
272 | }; | |
273 | ||
274 | struct attribute_group scsi_shost_attr_group = { | |
275 | .attrs = scsi_sysfs_shost_attrs, | |
276 | }; | |
277 | ||
278 | struct attribute_group *scsi_sysfs_shost_attr_groups[] = { | |
279 | &scsi_shost_attr_group, | |
1da177e4 LT |
280 | NULL |
281 | }; | |
282 | ||
ee959b00 | 283 | static void scsi_device_cls_release(struct device *class_dev) |
1da177e4 LT |
284 | { |
285 | struct scsi_device *sdev; | |
286 | ||
287 | sdev = class_to_sdev(class_dev); | |
288 | put_device(&sdev->sdev_gendev); | |
289 | } | |
290 | ||
65f27f38 | 291 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
1da177e4 LT |
292 | { |
293 | struct scsi_device *sdev; | |
294 | struct device *parent; | |
295 | struct scsi_target *starget; | |
a341cd0f | 296 | struct list_head *this, *tmp; |
1da177e4 LT |
297 | unsigned long flags; |
298 | ||
65f27f38 DH |
299 | sdev = container_of(work, struct scsi_device, ew.work); |
300 | ||
301 | parent = sdev->sdev_gendev.parent; | |
1da177e4 LT |
302 | starget = to_scsi_target(parent); |
303 | ||
304 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
305 | starget->reap_ref++; | |
306 | list_del(&sdev->siblings); | |
307 | list_del(&sdev->same_target_siblings); | |
308 | list_del(&sdev->starved_entry); | |
309 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
310 | ||
a341cd0f JG |
311 | cancel_work_sync(&sdev->event_work); |
312 | ||
313 | list_for_each_safe(this, tmp, &sdev->event_list) { | |
314 | struct scsi_event *evt; | |
315 | ||
316 | evt = list_entry(this, struct scsi_event, node); | |
317 | list_del(&evt->node); | |
318 | kfree(evt); | |
319 | } | |
320 | ||
1da177e4 LT |
321 | if (sdev->request_queue) { |
322 | sdev->request_queue->queuedata = NULL; | |
65110b21 | 323 | /* user context needed to free queue */ |
1da177e4 | 324 | scsi_free_queue(sdev->request_queue); |
c2a9331c | 325 | /* temporary expedient, try to catch use of queue lock |
326 | * after free of sdev */ | |
327 | sdev->request_queue = NULL; | |
1da177e4 LT |
328 | } |
329 | ||
330 | scsi_target_reap(scsi_target(sdev)); | |
331 | ||
332 | kfree(sdev->inquiry); | |
333 | kfree(sdev); | |
334 | ||
335 | if (parent) | |
336 | put_device(parent); | |
337 | } | |
338 | ||
65110b21 JB |
339 | static void scsi_device_dev_release(struct device *dev) |
340 | { | |
ffedb452 | 341 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 342 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 343 | &sdp->ew); |
65110b21 JB |
344 | } |
345 | ||
52c1da39 | 346 | static struct class sdev_class = { |
1da177e4 | 347 | .name = "scsi_device", |
ee959b00 | 348 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
349 | }; |
350 | ||
351 | /* all probing is done in the individual ->probe routines */ | |
352 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
353 | { | |
b0ed4336 HR |
354 | struct scsi_device *sdp; |
355 | ||
356 | if (dev->type != &scsi_dev_type) | |
357 | return 0; | |
358 | ||
359 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
360 | if (sdp->no_uld_attach) |
361 | return 0; | |
362 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
363 | } | |
364 | ||
7eff2e7a | 365 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 366 | { |
1f42ea7b JB |
367 | struct scsi_device *sdev; |
368 | ||
369 | if (dev->type != &scsi_dev_type) | |
370 | return 0; | |
371 | ||
372 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 373 | |
7eff2e7a | 374 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
375 | return 0; |
376 | } | |
377 | ||
9b847548 JA |
378 | static int scsi_bus_suspend(struct device * dev, pm_message_t state) |
379 | { | |
b0ed4336 HR |
380 | struct device_driver *drv; |
381 | struct scsi_device *sdev; | |
9b847548 JA |
382 | int err; |
383 | ||
b0ed4336 HR |
384 | if (dev->type != &scsi_dev_type) |
385 | return 0; | |
386 | ||
387 | drv = dev->driver; | |
388 | sdev = to_scsi_device(dev); | |
389 | ||
9b847548 JA |
390 | err = scsi_device_quiesce(sdev); |
391 | if (err) | |
392 | return err; | |
393 | ||
c3c94c5a TH |
394 | if (drv && drv->suspend) { |
395 | err = drv->suspend(dev, state); | |
396 | if (err) | |
397 | return err; | |
398 | } | |
399 | ||
c3c94c5a | 400 | return 0; |
9b847548 JA |
401 | } |
402 | ||
403 | static int scsi_bus_resume(struct device * dev) | |
404 | { | |
b0ed4336 HR |
405 | struct device_driver *drv; |
406 | struct scsi_device *sdev; | |
1dfcda06 | 407 | int err = 0; |
9b847548 | 408 | |
b0ed4336 HR |
409 | if (dev->type != &scsi_dev_type) |
410 | return 0; | |
411 | ||
412 | drv = dev->driver; | |
413 | sdev = to_scsi_device(dev); | |
414 | ||
c3c94c5a | 415 | if (drv && drv->resume) |
1dfcda06 | 416 | err = drv->resume(dev); |
c3c94c5a | 417 | |
9b847548 | 418 | scsi_device_resume(sdev); |
c3c94c5a | 419 | |
1dfcda06 | 420 | return err; |
9b847548 JA |
421 | } |
422 | ||
1da177e4 LT |
423 | struct bus_type scsi_bus_type = { |
424 | .name = "scsi", | |
425 | .match = scsi_bus_match, | |
d7b8bcb0 | 426 | .uevent = scsi_bus_uevent, |
9b847548 JA |
427 | .suspend = scsi_bus_suspend, |
428 | .resume = scsi_bus_resume, | |
1da177e4 | 429 | }; |
a6a8d9f8 | 430 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
431 | |
432 | int scsi_sysfs_register(void) | |
433 | { | |
434 | int error; | |
435 | ||
436 | error = bus_register(&scsi_bus_type); | |
437 | if (!error) { | |
438 | error = class_register(&sdev_class); | |
439 | if (error) | |
440 | bus_unregister(&scsi_bus_type); | |
441 | } | |
442 | ||
443 | return error; | |
444 | } | |
445 | ||
446 | void scsi_sysfs_unregister(void) | |
447 | { | |
448 | class_unregister(&sdev_class); | |
449 | bus_unregister(&scsi_bus_type); | |
450 | } | |
451 | ||
452 | /* | |
453 | * sdev_show_function: macro to create an attr function that can be used to | |
454 | * show a non-bit field. | |
455 | */ | |
456 | #define sdev_show_function(field, format_string) \ | |
457 | static ssize_t \ | |
ee959b00 TJ |
458 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
459 | char *buf) \ | |
1da177e4 LT |
460 | { \ |
461 | struct scsi_device *sdev; \ | |
462 | sdev = to_scsi_device(dev); \ | |
463 | return snprintf (buf, 20, format_string, sdev->field); \ | |
464 | } \ | |
465 | ||
466 | /* | |
467 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
468 | * read only field. | |
469 | */ | |
470 | #define sdev_rd_attr(field, format_string) \ | |
471 | sdev_show_function(field, format_string) \ | |
472 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
473 | ||
474 | ||
475 | /* | |
476 | * sdev_rd_attr: create a function and attribute variable for a | |
477 | * read/write field. | |
478 | */ | |
479 | #define sdev_rw_attr(field, format_string) \ | |
480 | sdev_show_function(field, format_string) \ | |
481 | \ | |
482 | static ssize_t \ | |
ee959b00 TJ |
483 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
484 | const char *buf, size_t count) \ | |
1da177e4 LT |
485 | { \ |
486 | struct scsi_device *sdev; \ | |
487 | sdev = to_scsi_device(dev); \ | |
488 | snscanf (buf, 20, format_string, &sdev->field); \ | |
489 | return count; \ | |
490 | } \ | |
491 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
492 | ||
493 | /* Currently we don't export bit fields, but we might in future, | |
494 | * so leave this code in */ | |
495 | #if 0 | |
496 | /* | |
497 | * sdev_rd_attr: create a function and attribute variable for a | |
498 | * read/write bit field. | |
499 | */ | |
500 | #define sdev_rw_attr_bit(field) \ | |
501 | sdev_show_function(field, "%d\n") \ | |
502 | \ | |
503 | static ssize_t \ | |
ee959b00 TJ |
504 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
505 | const char *buf, size_t count) \ | |
1da177e4 LT |
506 | { \ |
507 | int ret; \ | |
508 | struct scsi_device *sdev; \ | |
509 | ret = scsi_sdev_check_buf_bit(buf); \ | |
510 | if (ret >= 0) { \ | |
511 | sdev = to_scsi_device(dev); \ | |
512 | sdev->field = ret; \ | |
513 | ret = count; \ | |
514 | } \ | |
515 | return ret; \ | |
516 | } \ | |
517 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
518 | ||
519 | /* | |
520 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
521 | * else return -EINVAL. | |
522 | */ | |
523 | static int scsi_sdev_check_buf_bit(const char *buf) | |
524 | { | |
525 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
526 | if (buf[0] == '1') | |
527 | return 1; | |
528 | else if (buf[0] == '0') | |
529 | return 0; | |
530 | else | |
531 | return -EINVAL; | |
532 | } else | |
533 | return -EINVAL; | |
534 | } | |
535 | #endif | |
536 | /* | |
537 | * Create the actual show/store functions and data structures. | |
538 | */ | |
539 | sdev_rd_attr (device_blocked, "%d\n"); | |
540 | sdev_rd_attr (queue_depth, "%d\n"); | |
541 | sdev_rd_attr (type, "%d\n"); | |
542 | sdev_rd_attr (scsi_level, "%d\n"); | |
543 | sdev_rd_attr (vendor, "%.8s\n"); | |
544 | sdev_rd_attr (model, "%.16s\n"); | |
545 | sdev_rd_attr (rev, "%.4s\n"); | |
546 | ||
242f9dcb JA |
547 | /* |
548 | * TODO: can we make these symlinks to the block layer ones? | |
549 | */ | |
1da177e4 | 550 | static ssize_t |
10523b3b | 551 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
552 | { |
553 | struct scsi_device *sdev; | |
554 | sdev = to_scsi_device(dev); | |
242f9dcb | 555 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
556 | } |
557 | ||
558 | static ssize_t | |
ee959b00 TJ |
559 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
560 | const char *buf, size_t count) | |
1da177e4 LT |
561 | { |
562 | struct scsi_device *sdev; | |
563 | int timeout; | |
564 | sdev = to_scsi_device(dev); | |
565 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 566 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
567 | return count; |
568 | } | |
569 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
570 | ||
571 | static ssize_t | |
ee959b00 TJ |
572 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
573 | const char *buf, size_t count) | |
1da177e4 LT |
574 | { |
575 | scsi_rescan_device(dev); | |
576 | return count; | |
577 | } | |
578 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
579 | ||
d9a9cdfb AS |
580 | static void sdev_store_delete_callback(struct device *dev) |
581 | { | |
582 | scsi_remove_device(to_scsi_device(dev)); | |
583 | } | |
584 | ||
ee959b00 TJ |
585 | static ssize_t |
586 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
587 | const char *buf, size_t count) | |
1da177e4 | 588 | { |
d9a9cdfb AS |
589 | int rc; |
590 | ||
591 | /* An attribute cannot be unregistered by one of its own methods, | |
592 | * so we have to use this roundabout approach. | |
593 | */ | |
594 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
595 | if (rc) | |
596 | count = rc; | |
1da177e4 LT |
597 | return count; |
598 | }; | |
599 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
600 | ||
601 | static ssize_t | |
ee959b00 TJ |
602 | store_state_field(struct device *dev, struct device_attribute *attr, |
603 | const char *buf, size_t count) | |
1da177e4 LT |
604 | { |
605 | int i; | |
606 | struct scsi_device *sdev = to_scsi_device(dev); | |
607 | enum scsi_device_state state = 0; | |
608 | ||
6391a113 | 609 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
610 | const int len = strlen(sdev_states[i].name); |
611 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
612 | buf[len] == '\n') { | |
613 | state = sdev_states[i].value; | |
614 | break; | |
615 | } | |
616 | } | |
617 | if (!state) | |
618 | return -EINVAL; | |
619 | ||
620 | if (scsi_device_set_state(sdev, state)) | |
621 | return -EINVAL; | |
622 | return count; | |
623 | } | |
624 | ||
625 | static ssize_t | |
10523b3b | 626 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
627 | { |
628 | struct scsi_device *sdev = to_scsi_device(dev); | |
629 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
630 | ||
631 | if (!name) | |
632 | return -EINVAL; | |
633 | ||
634 | return snprintf(buf, 20, "%s\n", name); | |
635 | } | |
636 | ||
637 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
638 | ||
639 | static ssize_t | |
ee959b00 TJ |
640 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
641 | char *buf) | |
1da177e4 LT |
642 | { |
643 | struct scsi_device *sdev = to_scsi_device(dev); | |
644 | const char *name = "none"; | |
645 | ||
646 | if (sdev->ordered_tags) | |
647 | name = "ordered"; | |
648 | else if (sdev->simple_tags) | |
649 | name = "simple"; | |
650 | ||
651 | return snprintf(buf, 20, "%s\n", name); | |
652 | } | |
653 | ||
654 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
655 | ||
656 | static ssize_t | |
ee959b00 | 657 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
658 | { |
659 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
660 | } | |
661 | ||
662 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
663 | ||
664 | #define show_sdev_iostat(field) \ | |
665 | static ssize_t \ | |
ee959b00 TJ |
666 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
667 | char *buf) \ | |
1da177e4 LT |
668 | { \ |
669 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
670 | unsigned long long count = atomic_read(&sdev->field); \ | |
671 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
672 | } \ | |
673 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
674 | ||
675 | show_sdev_iostat(iorequest_cnt); | |
676 | show_sdev_iostat(iodone_cnt); | |
677 | show_sdev_iostat(ioerr_cnt); | |
678 | ||
d7b8bcb0 MT |
679 | static ssize_t |
680 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
681 | { | |
682 | struct scsi_device *sdev; | |
683 | sdev = to_scsi_device(dev); | |
684 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
685 | } | |
686 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 687 | |
a341cd0f JG |
688 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
689 | static ssize_t \ | |
690 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 691 | char *buf) \ |
a341cd0f JG |
692 | { \ |
693 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
694 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
695 | return snprintf(buf, 20, "%d\n", val); \ | |
696 | } | |
697 | ||
698 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
699 | static ssize_t \ | |
ee959b00 | 700 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
701 | const char *buf, size_t count) \ |
702 | { \ | |
703 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
704 | int val = simple_strtoul(buf, NULL, 0); \ | |
705 | if (val == 0) \ | |
706 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
707 | else if (val == 1) \ | |
708 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
709 | else \ | |
710 | return -EINVAL; \ | |
711 | return count; \ | |
712 | } | |
713 | ||
714 | #define DECLARE_EVT(name, Cap_name) \ | |
715 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
716 | DECLARE_EVT_STORE(name, Cap_name) \ | |
717 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
718 | sdev_store_evt_##name); | |
719 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
720 | ||
721 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
722 | ||
1da177e4 | 723 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
724 | static struct attribute *scsi_sdev_attrs[] = { |
725 | &dev_attr_device_blocked.attr, | |
726 | &dev_attr_type.attr, | |
727 | &dev_attr_scsi_level.attr, | |
728 | &dev_attr_vendor.attr, | |
729 | &dev_attr_model.attr, | |
730 | &dev_attr_rev.attr, | |
731 | &dev_attr_rescan.attr, | |
732 | &dev_attr_delete.attr, | |
733 | &dev_attr_state.attr, | |
734 | &dev_attr_timeout.attr, | |
735 | &dev_attr_iocounterbits.attr, | |
736 | &dev_attr_iorequest_cnt.attr, | |
737 | &dev_attr_iodone_cnt.attr, | |
738 | &dev_attr_ioerr_cnt.attr, | |
739 | &dev_attr_modalias.attr, | |
a341cd0f | 740 | REF_EVT(media_change), |
bfd12944 KS |
741 | NULL |
742 | }; | |
743 | ||
744 | static struct attribute_group scsi_sdev_attr_group = { | |
745 | .attrs = scsi_sdev_attrs, | |
746 | }; | |
747 | ||
748 | static struct attribute_group *scsi_sdev_attr_groups[] = { | |
749 | &scsi_sdev_attr_group, | |
1da177e4 LT |
750 | NULL |
751 | }; | |
752 | ||
ee959b00 TJ |
753 | static ssize_t |
754 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
755 | const char *buf, size_t count) | |
1da177e4 LT |
756 | { |
757 | int depth, retval; | |
758 | struct scsi_device *sdev = to_scsi_device(dev); | |
759 | struct scsi_host_template *sht = sdev->host->hostt; | |
760 | ||
761 | if (!sht->change_queue_depth) | |
762 | return -EINVAL; | |
763 | ||
764 | depth = simple_strtoul(buf, NULL, 0); | |
765 | ||
766 | if (depth < 1) | |
767 | return -EINVAL; | |
768 | ||
769 | retval = sht->change_queue_depth(sdev, depth); | |
770 | if (retval < 0) | |
771 | return retval; | |
772 | ||
773 | return count; | |
774 | } | |
775 | ||
776 | static struct device_attribute sdev_attr_queue_depth_rw = | |
777 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
778 | sdev_store_queue_depth_rw); | |
779 | ||
ee959b00 TJ |
780 | static ssize_t |
781 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
782 | const char *buf, size_t count) | |
1da177e4 LT |
783 | { |
784 | struct scsi_device *sdev = to_scsi_device(dev); | |
785 | struct scsi_host_template *sht = sdev->host->hostt; | |
786 | int tag_type = 0, retval; | |
787 | int prev_tag_type = scsi_get_tag_type(sdev); | |
788 | ||
789 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
790 | return -EINVAL; | |
791 | ||
792 | if (strncmp(buf, "ordered", 7) == 0) | |
793 | tag_type = MSG_ORDERED_TAG; | |
794 | else if (strncmp(buf, "simple", 6) == 0) | |
795 | tag_type = MSG_SIMPLE_TAG; | |
796 | else if (strncmp(buf, "none", 4) != 0) | |
797 | return -EINVAL; | |
798 | ||
799 | if (tag_type == prev_tag_type) | |
800 | return count; | |
801 | ||
802 | retval = sht->change_queue_type(sdev, tag_type); | |
803 | if (retval < 0) | |
804 | return retval; | |
805 | ||
806 | return count; | |
807 | } | |
808 | ||
643eb2d9 JB |
809 | static int scsi_target_add(struct scsi_target *starget) |
810 | { | |
811 | int error; | |
812 | ||
813 | if (starget->state != STARGET_CREATED) | |
814 | return 0; | |
815 | ||
816 | error = device_add(&starget->dev); | |
817 | if (error) { | |
818 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
819 | get_device(&starget->dev); | |
820 | scsi_target_reap(starget); | |
821 | put_device(&starget->dev); | |
822 | return error; | |
823 | } | |
824 | transport_add_device(&starget->dev); | |
825 | starget->state = STARGET_RUNNING; | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
1da177e4 LT |
830 | static struct device_attribute sdev_attr_queue_type_rw = |
831 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
832 | sdev_store_queue_type_rw); | |
833 | ||
1da177e4 LT |
834 | /** |
835 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
836 | * @sdev: scsi_device to add | |
837 | * | |
838 | * Return value: | |
839 | * 0 on Success / non-zero on Failure | |
840 | **/ | |
841 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
842 | { | |
843 | int error, i; | |
80ed71ce | 844 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 845 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 LT |
846 | |
847 | if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0) | |
848 | return error; | |
849 | ||
643eb2d9 JB |
850 | error = scsi_target_add(starget); |
851 | if (error) | |
852 | return error; | |
853 | ||
854 | transport_configure_device(&starget->dev); | |
1da177e4 LT |
855 | error = device_add(&sdev->sdev_gendev); |
856 | if (error) { | |
857 | put_device(sdev->sdev_gendev.parent); | |
858 | printk(KERN_INFO "error 1\n"); | |
859 | return error; | |
860 | } | |
ee959b00 | 861 | error = device_add(&sdev->sdev_dev); |
1da177e4 LT |
862 | if (error) { |
863 | printk(KERN_INFO "error 2\n"); | |
864 | goto clean_device; | |
865 | } | |
866 | ||
ee959b00 | 867 | /* take a reference for the sdev_dev; this is |
1da177e4 LT |
868 | * released by the sdev_class .release */ |
869 | get_device(&sdev->sdev_gendev); | |
80ed71ce | 870 | |
bfd12944 KS |
871 | /* create queue files, which may be writable, depending on the host */ |
872 | if (sdev->host->hostt->change_queue_depth) | |
873 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw); | |
874 | else | |
875 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
876 | if (error) { | |
877 | __scsi_remove_device(sdev); | |
878 | goto out; | |
879 | } | |
880 | if (sdev->host->hostt->change_queue_type) | |
881 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
882 | else | |
883 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
884 | if (error) { | |
885 | __scsi_remove_device(sdev); | |
886 | goto out; | |
887 | } | |
888 | ||
97f46ae4 | 889 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
890 | |
891 | if (error) | |
892 | sdev_printk(KERN_INFO, sdev, | |
893 | "Failed to register bsg queue, errno=%d\n", error); | |
894 | ||
895 | /* we're treating error on bsg register as non-fatal, so pretend | |
896 | * nothing went wrong */ | |
897 | error = 0; | |
898 | ||
bfd12944 | 899 | /* add additional host specific attributes */ |
1da177e4 LT |
900 | if (sdev->host->hostt->sdev_attrs) { |
901 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 902 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 LT |
903 | sdev->host->hostt->sdev_attrs[i]); |
904 | if (error) { | |
903f4fed | 905 | __scsi_remove_device(sdev); |
1da177e4 LT |
906 | goto out; |
907 | } | |
908 | } | |
909 | } | |
1da177e4 LT |
910 | |
911 | transport_add_device(&sdev->sdev_gendev); | |
912 | out: | |
913 | return error; | |
914 | ||
915 | clean_device: | |
916 | scsi_device_set_state(sdev, SDEV_CANCEL); | |
917 | ||
918 | device_del(&sdev->sdev_gendev); | |
919 | transport_destroy_device(&sdev->sdev_gendev); | |
920 | put_device(&sdev->sdev_gendev); | |
921 | ||
922 | return error; | |
923 | } | |
924 | ||
903f4fed | 925 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 926 | { |
df133c21 JB |
927 | struct device *dev = &sdev->sdev_gendev; |
928 | ||
1da177e4 | 929 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) |
903f4fed | 930 | return; |
1da177e4 | 931 | |
0feed274 | 932 | bsg_unregister_queue(sdev->request_queue); |
ee959b00 | 933 | device_unregister(&sdev->sdev_dev); |
df133c21 JB |
934 | transport_remove_device(dev); |
935 | device_del(dev); | |
1da177e4 LT |
936 | scsi_device_set_state(sdev, SDEV_DEL); |
937 | if (sdev->host->hostt->slave_destroy) | |
938 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 JB |
939 | transport_destroy_device(dev); |
940 | put_device(dev); | |
903f4fed AS |
941 | } |
942 | ||
943 | /** | |
944 | * scsi_remove_device - unregister a device from the scsi bus | |
945 | * @sdev: scsi_device to unregister | |
946 | **/ | |
947 | void scsi_remove_device(struct scsi_device *sdev) | |
948 | { | |
54195002 AS |
949 | struct Scsi_Host *shost = sdev->host; |
950 | ||
0b950672 | 951 | mutex_lock(&shost->scan_mutex); |
903f4fed | 952 | __scsi_remove_device(sdev); |
0b950672 | 953 | mutex_unlock(&shost->scan_mutex); |
1da177e4 LT |
954 | } |
955 | EXPORT_SYMBOL(scsi_remove_device); | |
956 | ||
44818efb | 957 | static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4 LT |
958 | { |
959 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
960 | unsigned long flags; | |
a64358db | 961 | struct scsi_device *sdev; |
1da177e4 LT |
962 | |
963 | spin_lock_irqsave(shost->host_lock, flags); | |
964 | starget->reap_ref++; | |
a64358db AS |
965 | restart: |
966 | list_for_each_entry(sdev, &shost->__devices, siblings) { | |
1da177e4 | 967 | if (sdev->channel != starget->channel || |
a64358db AS |
968 | sdev->id != starget->id || |
969 | sdev->sdev_state == SDEV_DEL) | |
1da177e4 LT |
970 | continue; |
971 | spin_unlock_irqrestore(shost->host_lock, flags); | |
972 | scsi_remove_device(sdev); | |
973 | spin_lock_irqsave(shost->host_lock, flags); | |
a64358db | 974 | goto restart; |
1da177e4 LT |
975 | } |
976 | spin_unlock_irqrestore(shost->host_lock, flags); | |
977 | scsi_target_reap(starget); | |
978 | } | |
979 | ||
20b1e674 | 980 | static int __remove_child (struct device * dev, void * data) |
981 | { | |
982 | if (scsi_is_target_device(dev)) | |
983 | __scsi_remove_target(to_scsi_target(dev)); | |
984 | return 0; | |
985 | } | |
986 | ||
1da177e4 LT |
987 | /** |
988 | * scsi_remove_target - try to remove a target and all its devices | |
989 | * @dev: generic starget or parent of generic stargets to be removed | |
990 | * | |
991 | * Note: This is slightly racy. It is possible that if the user | |
992 | * requests the addition of another device then the target won't be | |
993 | * removed. | |
994 | */ | |
995 | void scsi_remove_target(struct device *dev) | |
996 | { | |
20b1e674 | 997 | struct device *rdev; |
1da177e4 LT |
998 | |
999 | if (scsi_is_target_device(dev)) { | |
1000 | __scsi_remove_target(to_scsi_target(dev)); | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | rdev = get_device(dev); | |
20b1e674 | 1005 | device_for_each_child(dev, NULL, __remove_child); |
1da177e4 LT |
1006 | put_device(rdev); |
1007 | } | |
1008 | EXPORT_SYMBOL(scsi_remove_target); | |
1009 | ||
1010 | int scsi_register_driver(struct device_driver *drv) | |
1011 | { | |
1012 | drv->bus = &scsi_bus_type; | |
1013 | ||
1014 | return driver_register(drv); | |
1015 | } | |
1016 | EXPORT_SYMBOL(scsi_register_driver); | |
1017 | ||
1018 | int scsi_register_interface(struct class_interface *intf) | |
1019 | { | |
1020 | intf->class = &sdev_class; | |
1021 | ||
1022 | return class_interface_register(intf); | |
1023 | } | |
1024 | EXPORT_SYMBOL(scsi_register_interface); | |
1025 | ||
1da177e4 LT |
1026 | /** |
1027 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1028 | * @shost: scsi host struct to add to subsystem | |
1da177e4 LT |
1029 | **/ |
1030 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1031 | { | |
1032 | int error, i; | |
1033 | ||
f7120a4f | 1034 | /* add host specific attributes */ |
1da177e4 LT |
1035 | if (shost->hostt->shost_attrs) { |
1036 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1037 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1038 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1039 | if (error) |
1040 | return error; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1045 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1046 | return 0; |
1047 | } | |
1048 | ||
bfd12944 KS |
1049 | static struct device_type scsi_dev_type = { |
1050 | .name = "scsi_device", | |
1051 | .release = scsi_device_dev_release, | |
1052 | .groups = scsi_sdev_attr_groups, | |
1053 | }; | |
1054 | ||
1da177e4 LT |
1055 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1056 | { | |
1057 | unsigned long flags; | |
1058 | struct Scsi_Host *shost = sdev->host; | |
1059 | struct scsi_target *starget = sdev->sdev_target; | |
1060 | ||
1061 | device_initialize(&sdev->sdev_gendev); | |
1062 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1063 | sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55 KS |
1064 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
1065 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
1066 | ||
ee959b00 TJ |
1067 | device_initialize(&sdev->sdev_dev); |
1068 | sdev->sdev_dev.parent = &sdev->sdev_gendev; | |
1069 | sdev->sdev_dev.class = &sdev_class; | |
71610f55 KS |
1070 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
1071 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1072 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1073 | transport_setup_device(&sdev->sdev_gendev); |
1074 | spin_lock_irqsave(shost->host_lock, flags); | |
1075 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1076 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1077 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1078 | } | |
1079 | ||
1080 | int scsi_is_sdev_device(const struct device *dev) | |
1081 | { | |
13ba9bcb | 1082 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1083 | } |
1084 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1085 | ||
1086 | /* A blank transport template that is used in drivers that don't | |
1087 | * yet implement Transport Attributes */ | |
1088 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |