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Commit | Line | Data |
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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 | 9 | #include <linux/module.h> |
5a0e3ad6 | 10 | #include <linux/slab.h> |
1da177e4 LT |
11 | #include <linux/init.h> |
12 | #include <linux/blkdev.h> | |
13 | #include <linux/device.h> | |
14 | ||
15 | #include <scsi/scsi.h> | |
16 | #include <scsi/scsi_device.h> | |
17 | #include <scsi/scsi_host.h> | |
18 | #include <scsi/scsi_tcq.h> | |
19 | #include <scsi/scsi_transport.h> | |
44818efb | 20 | #include <scsi/scsi_driver.h> |
1da177e4 LT |
21 | |
22 | #include "scsi_priv.h" | |
23 | #include "scsi_logging.h" | |
24 | ||
b0ed4336 HR |
25 | static struct device_type scsi_dev_type; |
26 | ||
0ad78200 | 27 | static const struct { |
1da177e4 LT |
28 | enum scsi_device_state value; |
29 | char *name; | |
30 | } sdev_states[] = { | |
31 | { SDEV_CREATED, "created" }, | |
32 | { SDEV_RUNNING, "running" }, | |
33 | { SDEV_CANCEL, "cancel" }, | |
34 | { SDEV_DEL, "deleted" }, | |
35 | { SDEV_QUIESCE, "quiesce" }, | |
36 | { SDEV_OFFLINE, "offline" }, | |
37 | { SDEV_BLOCK, "blocked" }, | |
6f4267e3 | 38 | { SDEV_CREATED_BLOCK, "created-blocked" }, |
1da177e4 LT |
39 | }; |
40 | ||
41 | const char *scsi_device_state_name(enum scsi_device_state state) | |
42 | { | |
43 | int i; | |
44 | char *name = NULL; | |
45 | ||
6391a113 | 46 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
47 | if (sdev_states[i].value == state) { |
48 | name = sdev_states[i].name; | |
49 | break; | |
50 | } | |
51 | } | |
52 | return name; | |
53 | } | |
54 | ||
0ad78200 | 55 | static const struct { |
d3301874 MA |
56 | enum scsi_host_state value; |
57 | char *name; | |
58 | } shost_states[] = { | |
59 | { SHOST_CREATED, "created" }, | |
60 | { SHOST_RUNNING, "running" }, | |
61 | { SHOST_CANCEL, "cancel" }, | |
62 | { SHOST_DEL, "deleted" }, | |
63 | { SHOST_RECOVERY, "recovery" }, | |
939647ee JB |
64 | { SHOST_CANCEL_RECOVERY, "cancel/recovery" }, |
65 | { SHOST_DEL_RECOVERY, "deleted/recovery", }, | |
d3301874 MA |
66 | }; |
67 | const char *scsi_host_state_name(enum scsi_host_state state) | |
68 | { | |
69 | int i; | |
70 | char *name = NULL; | |
71 | ||
6391a113 | 72 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
73 | if (shost_states[i].value == state) { |
74 | name = shost_states[i].name; | |
75 | break; | |
76 | } | |
77 | } | |
78 | return name; | |
79 | } | |
80 | ||
1da177e4 LT |
81 | static int check_set(unsigned int *val, char *src) |
82 | { | |
83 | char *last; | |
84 | ||
85 | if (strncmp(src, "-", 20) == 0) { | |
86 | *val = SCAN_WILD_CARD; | |
87 | } else { | |
88 | /* | |
89 | * Doesn't check for int overflow | |
90 | */ | |
91 | *val = simple_strtoul(src, &last, 0); | |
92 | if (*last != '\0') | |
93 | return 1; | |
94 | } | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static int scsi_scan(struct Scsi_Host *shost, const char *str) | |
99 | { | |
100 | char s1[15], s2[15], s3[15], junk; | |
101 | unsigned int channel, id, lun; | |
102 | int res; | |
103 | ||
104 | res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); | |
105 | if (res != 3) | |
106 | return -EINVAL; | |
107 | if (check_set(&channel, s1)) | |
108 | return -EINVAL; | |
109 | if (check_set(&id, s2)) | |
110 | return -EINVAL; | |
111 | if (check_set(&lun, s3)) | |
112 | return -EINVAL; | |
e02f3f59 CH |
113 | if (shost->transportt->user_scan) |
114 | res = shost->transportt->user_scan(shost, channel, id, lun); | |
115 | else | |
116 | res = scsi_scan_host_selected(shost, channel, id, lun, 1); | |
1da177e4 LT |
117 | return res; |
118 | } | |
119 | ||
120 | /* | |
121 | * shost_show_function: macro to create an attr function that can be used to | |
122 | * show a non-bit field. | |
123 | */ | |
124 | #define shost_show_function(name, field, format_string) \ | |
125 | static ssize_t \ | |
ee959b00 TJ |
126 | show_##name (struct device *dev, struct device_attribute *attr, \ |
127 | char *buf) \ | |
1da177e4 | 128 | { \ |
ee959b00 | 129 | struct Scsi_Host *shost = class_to_shost(dev); \ |
1da177e4 LT |
130 | return snprintf (buf, 20, format_string, shost->field); \ |
131 | } | |
132 | ||
133 | /* | |
134 | * shost_rd_attr: macro to create a function and attribute variable for a | |
135 | * read only field. | |
136 | */ | |
137 | #define shost_rd_attr2(name, field, format_string) \ | |
138 | shost_show_function(name, field, format_string) \ | |
ee959b00 | 139 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
1da177e4 LT |
140 | |
141 | #define shost_rd_attr(field, format_string) \ | |
142 | shost_rd_attr2(field, field, format_string) | |
143 | ||
144 | /* | |
145 | * Create the actual show/store functions and data structures. | |
146 | */ | |
147 | ||
ee959b00 TJ |
148 | static ssize_t |
149 | store_scan(struct device *dev, struct device_attribute *attr, | |
150 | const char *buf, size_t count) | |
1da177e4 | 151 | { |
ee959b00 | 152 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
153 | int res; |
154 | ||
155 | res = scsi_scan(shost, buf); | |
156 | if (res == 0) | |
157 | res = count; | |
158 | return res; | |
159 | }; | |
ee959b00 | 160 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
1da177e4 | 161 | |
d3301874 | 162 | static ssize_t |
ee959b00 TJ |
163 | store_shost_state(struct device *dev, struct device_attribute *attr, |
164 | const char *buf, size_t count) | |
d3301874 MA |
165 | { |
166 | int i; | |
ee959b00 | 167 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
168 | enum scsi_host_state state = 0; |
169 | ||
6391a113 | 170 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
171 | const int len = strlen(shost_states[i].name); |
172 | if (strncmp(shost_states[i].name, buf, len) == 0 && | |
173 | buf[len] == '\n') { | |
174 | state = shost_states[i].value; | |
175 | break; | |
176 | } | |
177 | } | |
178 | if (!state) | |
179 | return -EINVAL; | |
180 | ||
181 | if (scsi_host_set_state(shost, state)) | |
182 | return -EINVAL; | |
183 | return count; | |
184 | } | |
185 | ||
186 | static ssize_t | |
ee959b00 | 187 | show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
d3301874 | 188 | { |
ee959b00 | 189 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
190 | const char *name = scsi_host_state_name(shost->shost_state); |
191 | ||
192 | if (!name) | |
193 | return -EINVAL; | |
194 | ||
195 | return snprintf(buf, 20, "%s\n", name); | |
196 | } | |
197 | ||
ee959b00 TJ |
198 | /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
199 | struct device_attribute dev_attr_hstate = | |
200 | __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); | |
d3301874 | 201 | |
5dc2b89e FT |
202 | static ssize_t |
203 | show_shost_mode(unsigned int mode, char *buf) | |
204 | { | |
205 | ssize_t len = 0; | |
206 | ||
207 | if (mode & MODE_INITIATOR) | |
208 | len = sprintf(buf, "%s", "Initiator"); | |
209 | ||
210 | if (mode & MODE_TARGET) | |
211 | len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); | |
212 | ||
213 | len += sprintf(buf + len, "\n"); | |
214 | ||
215 | return len; | |
216 | } | |
217 | ||
ee959b00 TJ |
218 | static ssize_t |
219 | show_shost_supported_mode(struct device *dev, struct device_attribute *attr, | |
220 | char *buf) | |
5dc2b89e | 221 | { |
ee959b00 | 222 | struct Scsi_Host *shost = class_to_shost(dev); |
7a39ac3f | 223 | unsigned int supported_mode = shost->hostt->supported_mode; |
5dc2b89e | 224 | |
7a39ac3f JB |
225 | if (supported_mode == MODE_UNKNOWN) |
226 | /* by default this should be initiator */ | |
227 | supported_mode = MODE_INITIATOR; | |
228 | ||
229 | return show_shost_mode(supported_mode, buf); | |
5dc2b89e FT |
230 | } |
231 | ||
ee959b00 | 232 | static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
5dc2b89e | 233 | |
ee959b00 TJ |
234 | static ssize_t |
235 | show_shost_active_mode(struct device *dev, | |
236 | struct device_attribute *attr, char *buf) | |
5dc2b89e | 237 | { |
ee959b00 | 238 | struct Scsi_Host *shost = class_to_shost(dev); |
5dc2b89e FT |
239 | |
240 | if (shost->active_mode == MODE_UNKNOWN) | |
241 | return snprintf(buf, 20, "unknown\n"); | |
242 | else | |
243 | return show_shost_mode(shost->active_mode, buf); | |
244 | } | |
245 | ||
ee959b00 | 246 | static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
5dc2b89e | 247 | |
1da177e4 LT |
248 | shost_rd_attr(unique_id, "%u\n"); |
249 | shost_rd_attr(host_busy, "%hu\n"); | |
250 | shost_rd_attr(cmd_per_lun, "%hd\n"); | |
ed632da8 | 251 | shost_rd_attr(can_queue, "%hd\n"); |
1da177e4 LT |
252 | shost_rd_attr(sg_tablesize, "%hu\n"); |
253 | shost_rd_attr(unchecked_isa_dma, "%d\n"); | |
4469f987 MP |
254 | shost_rd_attr(prot_capabilities, "%u\n"); |
255 | shost_rd_attr(prot_guard_type, "%hd\n"); | |
1da177e4 LT |
256 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
257 | ||
f7120a4f HR |
258 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
259 | &dev_attr_unique_id.attr, | |
260 | &dev_attr_host_busy.attr, | |
261 | &dev_attr_cmd_per_lun.attr, | |
262 | &dev_attr_can_queue.attr, | |
263 | &dev_attr_sg_tablesize.attr, | |
264 | &dev_attr_unchecked_isa_dma.attr, | |
265 | &dev_attr_proc_name.attr, | |
266 | &dev_attr_scan.attr, | |
267 | &dev_attr_hstate.attr, | |
268 | &dev_attr_supported_mode.attr, | |
269 | &dev_attr_active_mode.attr, | |
4469f987 MP |
270 | &dev_attr_prot_capabilities.attr, |
271 | &dev_attr_prot_guard_type.attr, | |
f7120a4f HR |
272 | NULL |
273 | }; | |
274 | ||
275 | struct attribute_group scsi_shost_attr_group = { | |
276 | .attrs = scsi_sysfs_shost_attrs, | |
277 | }; | |
278 | ||
a4dbd674 | 279 | const struct attribute_group *scsi_sysfs_shost_attr_groups[] = { |
f7120a4f | 280 | &scsi_shost_attr_group, |
1da177e4 LT |
281 | NULL |
282 | }; | |
283 | ||
ee959b00 | 284 | static void scsi_device_cls_release(struct device *class_dev) |
1da177e4 LT |
285 | { |
286 | struct scsi_device *sdev; | |
287 | ||
288 | sdev = class_to_sdev(class_dev); | |
289 | put_device(&sdev->sdev_gendev); | |
290 | } | |
291 | ||
65f27f38 | 292 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
1da177e4 LT |
293 | { |
294 | struct scsi_device *sdev; | |
295 | struct device *parent; | |
296 | struct scsi_target *starget; | |
a341cd0f | 297 | struct list_head *this, *tmp; |
1da177e4 LT |
298 | unsigned long flags; |
299 | ||
65f27f38 DH |
300 | sdev = container_of(work, struct scsi_device, ew.work); |
301 | ||
302 | parent = sdev->sdev_gendev.parent; | |
1da177e4 LT |
303 | starget = to_scsi_target(parent); |
304 | ||
305 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
306 | starget->reap_ref++; | |
307 | list_del(&sdev->siblings); | |
308 | list_del(&sdev->same_target_siblings); | |
309 | list_del(&sdev->starved_entry); | |
310 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
311 | ||
a341cd0f JG |
312 | cancel_work_sync(&sdev->event_work); |
313 | ||
314 | list_for_each_safe(this, tmp, &sdev->event_list) { | |
315 | struct scsi_event *evt; | |
316 | ||
317 | evt = list_entry(this, struct scsi_event, node); | |
318 | list_del(&evt->node); | |
319 | kfree(evt); | |
320 | } | |
321 | ||
1da177e4 LT |
322 | if (sdev->request_queue) { |
323 | sdev->request_queue->queuedata = NULL; | |
65110b21 | 324 | /* user context needed to free queue */ |
1da177e4 | 325 | scsi_free_queue(sdev->request_queue); |
c2a9331c JB |
326 | /* temporary expedient, try to catch use of queue lock |
327 | * after free of sdev */ | |
328 | sdev->request_queue = NULL; | |
1da177e4 LT |
329 | } |
330 | ||
331 | scsi_target_reap(scsi_target(sdev)); | |
332 | ||
333 | kfree(sdev->inquiry); | |
334 | kfree(sdev); | |
335 | ||
336 | if (parent) | |
337 | put_device(parent); | |
338 | } | |
339 | ||
65110b21 JB |
340 | static void scsi_device_dev_release(struct device *dev) |
341 | { | |
ffedb452 | 342 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 343 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 344 | &sdp->ew); |
65110b21 JB |
345 | } |
346 | ||
52c1da39 | 347 | static struct class sdev_class = { |
1da177e4 | 348 | .name = "scsi_device", |
ee959b00 | 349 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
350 | }; |
351 | ||
352 | /* all probing is done in the individual ->probe routines */ | |
353 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
354 | { | |
b0ed4336 HR |
355 | struct scsi_device *sdp; |
356 | ||
357 | if (dev->type != &scsi_dev_type) | |
358 | return 0; | |
359 | ||
360 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
361 | if (sdp->no_uld_attach) |
362 | return 0; | |
363 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
364 | } | |
365 | ||
7eff2e7a | 366 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 367 | { |
1f42ea7b JB |
368 | struct scsi_device *sdev; |
369 | ||
370 | if (dev->type != &scsi_dev_type) | |
371 | return 0; | |
372 | ||
373 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 374 | |
7eff2e7a | 375 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
376 | return 0; |
377 | } | |
378 | ||
1da177e4 LT |
379 | struct bus_type scsi_bus_type = { |
380 | .name = "scsi", | |
381 | .match = scsi_bus_match, | |
d7b8bcb0 | 382 | .uevent = scsi_bus_uevent, |
db5bd1e0 | 383 | .pm = &scsi_bus_pm_ops, |
1da177e4 | 384 | }; |
a6a8d9f8 | 385 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
386 | |
387 | int scsi_sysfs_register(void) | |
388 | { | |
389 | int error; | |
390 | ||
391 | error = bus_register(&scsi_bus_type); | |
392 | if (!error) { | |
393 | error = class_register(&sdev_class); | |
394 | if (error) | |
395 | bus_unregister(&scsi_bus_type); | |
396 | } | |
397 | ||
398 | return error; | |
399 | } | |
400 | ||
401 | void scsi_sysfs_unregister(void) | |
402 | { | |
403 | class_unregister(&sdev_class); | |
404 | bus_unregister(&scsi_bus_type); | |
405 | } | |
406 | ||
407 | /* | |
408 | * sdev_show_function: macro to create an attr function that can be used to | |
409 | * show a non-bit field. | |
410 | */ | |
411 | #define sdev_show_function(field, format_string) \ | |
412 | static ssize_t \ | |
ee959b00 TJ |
413 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
414 | char *buf) \ | |
1da177e4 LT |
415 | { \ |
416 | struct scsi_device *sdev; \ | |
417 | sdev = to_scsi_device(dev); \ | |
418 | return snprintf (buf, 20, format_string, sdev->field); \ | |
419 | } \ | |
420 | ||
421 | /* | |
422 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
423 | * read only field. | |
424 | */ | |
425 | #define sdev_rd_attr(field, format_string) \ | |
426 | sdev_show_function(field, format_string) \ | |
427 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
428 | ||
429 | ||
430 | /* | |
160e7f67 | 431 | * sdev_rw_attr: create a function and attribute variable for a |
1da177e4 LT |
432 | * read/write field. |
433 | */ | |
434 | #define sdev_rw_attr(field, format_string) \ | |
435 | sdev_show_function(field, format_string) \ | |
436 | \ | |
437 | static ssize_t \ | |
ee959b00 TJ |
438 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
439 | const char *buf, size_t count) \ | |
1da177e4 LT |
440 | { \ |
441 | struct scsi_device *sdev; \ | |
442 | sdev = to_scsi_device(dev); \ | |
160e7f67 | 443 | sscanf (buf, format_string, &sdev->field); \ |
1da177e4 LT |
444 | return count; \ |
445 | } \ | |
446 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
447 | ||
448 | /* Currently we don't export bit fields, but we might in future, | |
449 | * so leave this code in */ | |
450 | #if 0 | |
451 | /* | |
452 | * sdev_rd_attr: create a function and attribute variable for a | |
453 | * read/write bit field. | |
454 | */ | |
455 | #define sdev_rw_attr_bit(field) \ | |
456 | sdev_show_function(field, "%d\n") \ | |
457 | \ | |
458 | static ssize_t \ | |
ee959b00 TJ |
459 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
460 | const char *buf, size_t count) \ | |
1da177e4 LT |
461 | { \ |
462 | int ret; \ | |
463 | struct scsi_device *sdev; \ | |
464 | ret = scsi_sdev_check_buf_bit(buf); \ | |
465 | if (ret >= 0) { \ | |
466 | sdev = to_scsi_device(dev); \ | |
467 | sdev->field = ret; \ | |
468 | ret = count; \ | |
469 | } \ | |
470 | return ret; \ | |
471 | } \ | |
472 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
473 | ||
474 | /* | |
475 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
476 | * else return -EINVAL. | |
477 | */ | |
478 | static int scsi_sdev_check_buf_bit(const char *buf) | |
479 | { | |
480 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
481 | if (buf[0] == '1') | |
482 | return 1; | |
483 | else if (buf[0] == '0') | |
484 | return 0; | |
485 | else | |
486 | return -EINVAL; | |
487 | } else | |
488 | return -EINVAL; | |
489 | } | |
490 | #endif | |
491 | /* | |
492 | * Create the actual show/store functions and data structures. | |
493 | */ | |
494 | sdev_rd_attr (device_blocked, "%d\n"); | |
495 | sdev_rd_attr (queue_depth, "%d\n"); | |
496 | sdev_rd_attr (type, "%d\n"); | |
497 | sdev_rd_attr (scsi_level, "%d\n"); | |
498 | sdev_rd_attr (vendor, "%.8s\n"); | |
499 | sdev_rd_attr (model, "%.16s\n"); | |
500 | sdev_rd_attr (rev, "%.4s\n"); | |
501 | ||
242f9dcb JA |
502 | /* |
503 | * TODO: can we make these symlinks to the block layer ones? | |
504 | */ | |
1da177e4 | 505 | static ssize_t |
10523b3b | 506 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
507 | { |
508 | struct scsi_device *sdev; | |
509 | sdev = to_scsi_device(dev); | |
242f9dcb | 510 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
511 | } |
512 | ||
513 | static ssize_t | |
ee959b00 TJ |
514 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
515 | const char *buf, size_t count) | |
1da177e4 LT |
516 | { |
517 | struct scsi_device *sdev; | |
518 | int timeout; | |
519 | sdev = to_scsi_device(dev); | |
520 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 521 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
522 | return count; |
523 | } | |
524 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
525 | ||
526 | static ssize_t | |
ee959b00 TJ |
527 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
528 | const char *buf, size_t count) | |
1da177e4 LT |
529 | { |
530 | scsi_rescan_device(dev); | |
531 | return count; | |
532 | } | |
533 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
534 | ||
d9a9cdfb AS |
535 | static void sdev_store_delete_callback(struct device *dev) |
536 | { | |
537 | scsi_remove_device(to_scsi_device(dev)); | |
538 | } | |
539 | ||
ee959b00 TJ |
540 | static ssize_t |
541 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
542 | const char *buf, size_t count) | |
1da177e4 | 543 | { |
d9a9cdfb AS |
544 | int rc; |
545 | ||
546 | /* An attribute cannot be unregistered by one of its own methods, | |
547 | * so we have to use this roundabout approach. | |
548 | */ | |
549 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
550 | if (rc) | |
551 | count = rc; | |
1da177e4 LT |
552 | return count; |
553 | }; | |
554 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
555 | ||
556 | static ssize_t | |
ee959b00 TJ |
557 | store_state_field(struct device *dev, struct device_attribute *attr, |
558 | const char *buf, size_t count) | |
1da177e4 LT |
559 | { |
560 | int i; | |
561 | struct scsi_device *sdev = to_scsi_device(dev); | |
562 | enum scsi_device_state state = 0; | |
563 | ||
6391a113 | 564 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
565 | const int len = strlen(sdev_states[i].name); |
566 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
567 | buf[len] == '\n') { | |
568 | state = sdev_states[i].value; | |
569 | break; | |
570 | } | |
571 | } | |
572 | if (!state) | |
573 | return -EINVAL; | |
574 | ||
575 | if (scsi_device_set_state(sdev, state)) | |
576 | return -EINVAL; | |
577 | return count; | |
578 | } | |
579 | ||
580 | static ssize_t | |
10523b3b | 581 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
582 | { |
583 | struct scsi_device *sdev = to_scsi_device(dev); | |
584 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
585 | ||
586 | if (!name) | |
587 | return -EINVAL; | |
588 | ||
589 | return snprintf(buf, 20, "%s\n", name); | |
590 | } | |
591 | ||
592 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
593 | ||
594 | static ssize_t | |
ee959b00 TJ |
595 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
596 | char *buf) | |
1da177e4 LT |
597 | { |
598 | struct scsi_device *sdev = to_scsi_device(dev); | |
599 | const char *name = "none"; | |
600 | ||
601 | if (sdev->ordered_tags) | |
602 | name = "ordered"; | |
603 | else if (sdev->simple_tags) | |
604 | name = "simple"; | |
605 | ||
606 | return snprintf(buf, 20, "%s\n", name); | |
607 | } | |
608 | ||
609 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
610 | ||
611 | static ssize_t | |
ee959b00 | 612 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
613 | { |
614 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
615 | } | |
616 | ||
617 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
618 | ||
619 | #define show_sdev_iostat(field) \ | |
620 | static ssize_t \ | |
ee959b00 TJ |
621 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
622 | char *buf) \ | |
1da177e4 LT |
623 | { \ |
624 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
625 | unsigned long long count = atomic_read(&sdev->field); \ | |
626 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
627 | } \ | |
628 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
629 | ||
630 | show_sdev_iostat(iorequest_cnt); | |
631 | show_sdev_iostat(iodone_cnt); | |
632 | show_sdev_iostat(ioerr_cnt); | |
633 | ||
d7b8bcb0 MT |
634 | static ssize_t |
635 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
636 | { | |
637 | struct scsi_device *sdev; | |
638 | sdev = to_scsi_device(dev); | |
639 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
640 | } | |
641 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 642 | |
a341cd0f JG |
643 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
644 | static ssize_t \ | |
645 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 646 | char *buf) \ |
a341cd0f JG |
647 | { \ |
648 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
649 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
650 | return snprintf(buf, 20, "%d\n", val); \ | |
651 | } | |
652 | ||
653 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
654 | static ssize_t \ | |
ee959b00 | 655 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
656 | const char *buf, size_t count) \ |
657 | { \ | |
658 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
659 | int val = simple_strtoul(buf, NULL, 0); \ | |
660 | if (val == 0) \ | |
661 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
662 | else if (val == 1) \ | |
663 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
664 | else \ | |
665 | return -EINVAL; \ | |
666 | return count; \ | |
667 | } | |
668 | ||
669 | #define DECLARE_EVT(name, Cap_name) \ | |
670 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
671 | DECLARE_EVT_STORE(name, Cap_name) \ | |
672 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
673 | sdev_store_evt_##name); | |
674 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
675 | ||
676 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
677 | ||
1da177e4 | 678 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
679 | static struct attribute *scsi_sdev_attrs[] = { |
680 | &dev_attr_device_blocked.attr, | |
681 | &dev_attr_type.attr, | |
682 | &dev_attr_scsi_level.attr, | |
683 | &dev_attr_vendor.attr, | |
684 | &dev_attr_model.attr, | |
685 | &dev_attr_rev.attr, | |
686 | &dev_attr_rescan.attr, | |
687 | &dev_attr_delete.attr, | |
688 | &dev_attr_state.attr, | |
689 | &dev_attr_timeout.attr, | |
690 | &dev_attr_iocounterbits.attr, | |
691 | &dev_attr_iorequest_cnt.attr, | |
692 | &dev_attr_iodone_cnt.attr, | |
693 | &dev_attr_ioerr_cnt.attr, | |
694 | &dev_attr_modalias.attr, | |
a341cd0f | 695 | REF_EVT(media_change), |
bfd12944 KS |
696 | NULL |
697 | }; | |
698 | ||
699 | static struct attribute_group scsi_sdev_attr_group = { | |
700 | .attrs = scsi_sdev_attrs, | |
701 | }; | |
702 | ||
a4dbd674 | 703 | static const struct attribute_group *scsi_sdev_attr_groups[] = { |
bfd12944 | 704 | &scsi_sdev_attr_group, |
1da177e4 LT |
705 | NULL |
706 | }; | |
707 | ||
ee959b00 TJ |
708 | static ssize_t |
709 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
710 | const char *buf, size_t count) | |
1da177e4 LT |
711 | { |
712 | int depth, retval; | |
713 | struct scsi_device *sdev = to_scsi_device(dev); | |
714 | struct scsi_host_template *sht = sdev->host->hostt; | |
715 | ||
716 | if (!sht->change_queue_depth) | |
717 | return -EINVAL; | |
718 | ||
719 | depth = simple_strtoul(buf, NULL, 0); | |
720 | ||
721 | if (depth < 1) | |
722 | return -EINVAL; | |
723 | ||
e881a172 MC |
724 | retval = sht->change_queue_depth(sdev, depth, |
725 | SCSI_QDEPTH_DEFAULT); | |
1da177e4 LT |
726 | if (retval < 0) |
727 | return retval; | |
728 | ||
4a84067d VD |
729 | sdev->max_queue_depth = sdev->queue_depth; |
730 | ||
1da177e4 LT |
731 | return count; |
732 | } | |
733 | ||
734 | static struct device_attribute sdev_attr_queue_depth_rw = | |
735 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
736 | sdev_store_queue_depth_rw); | |
737 | ||
4a84067d VD |
738 | static ssize_t |
739 | sdev_show_queue_ramp_up_period(struct device *dev, | |
740 | struct device_attribute *attr, | |
741 | char *buf) | |
742 | { | |
743 | struct scsi_device *sdev; | |
744 | sdev = to_scsi_device(dev); | |
745 | return snprintf(buf, 20, "%u\n", | |
746 | jiffies_to_msecs(sdev->queue_ramp_up_period)); | |
747 | } | |
748 | ||
749 | static ssize_t | |
750 | sdev_store_queue_ramp_up_period(struct device *dev, | |
751 | struct device_attribute *attr, | |
752 | const char *buf, size_t count) | |
753 | { | |
754 | struct scsi_device *sdev = to_scsi_device(dev); | |
755 | unsigned long period; | |
756 | ||
757 | if (strict_strtoul(buf, 10, &period)) | |
758 | return -EINVAL; | |
759 | ||
760 | sdev->queue_ramp_up_period = msecs_to_jiffies(period); | |
761 | return period; | |
762 | } | |
763 | ||
764 | static struct device_attribute sdev_attr_queue_ramp_up_period = | |
765 | __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, | |
766 | sdev_show_queue_ramp_up_period, | |
767 | sdev_store_queue_ramp_up_period); | |
768 | ||
ee959b00 TJ |
769 | static ssize_t |
770 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
771 | const char *buf, size_t count) | |
1da177e4 LT |
772 | { |
773 | struct scsi_device *sdev = to_scsi_device(dev); | |
774 | struct scsi_host_template *sht = sdev->host->hostt; | |
775 | int tag_type = 0, retval; | |
776 | int prev_tag_type = scsi_get_tag_type(sdev); | |
777 | ||
778 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
779 | return -EINVAL; | |
780 | ||
781 | if (strncmp(buf, "ordered", 7) == 0) | |
782 | tag_type = MSG_ORDERED_TAG; | |
783 | else if (strncmp(buf, "simple", 6) == 0) | |
784 | tag_type = MSG_SIMPLE_TAG; | |
785 | else if (strncmp(buf, "none", 4) != 0) | |
786 | return -EINVAL; | |
787 | ||
788 | if (tag_type == prev_tag_type) | |
789 | return count; | |
790 | ||
791 | retval = sht->change_queue_type(sdev, tag_type); | |
792 | if (retval < 0) | |
793 | return retval; | |
794 | ||
795 | return count; | |
796 | } | |
797 | ||
643eb2d9 JB |
798 | static int scsi_target_add(struct scsi_target *starget) |
799 | { | |
800 | int error; | |
801 | ||
802 | if (starget->state != STARGET_CREATED) | |
803 | return 0; | |
804 | ||
4cb077d9 RW |
805 | device_enable_async_suspend(&starget->dev); |
806 | ||
643eb2d9 JB |
807 | error = device_add(&starget->dev); |
808 | if (error) { | |
809 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
643eb2d9 JB |
810 | return error; |
811 | } | |
812 | transport_add_device(&starget->dev); | |
813 | starget->state = STARGET_RUNNING; | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
1da177e4 LT |
818 | static struct device_attribute sdev_attr_queue_type_rw = |
819 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
820 | sdev_store_queue_type_rw); | |
821 | ||
1da177e4 LT |
822 | /** |
823 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
824 | * @sdev: scsi_device to add | |
825 | * | |
826 | * Return value: | |
827 | * 0 on Success / non-zero on Failure | |
828 | **/ | |
829 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
830 | { | |
831 | int error, i; | |
80ed71ce | 832 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 833 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 | 834 | |
ee37e09d AS |
835 | error = scsi_device_set_state(sdev, SDEV_RUNNING); |
836 | if (error) | |
1da177e4 LT |
837 | return error; |
838 | ||
643eb2d9 JB |
839 | error = scsi_target_add(starget); |
840 | if (error) | |
841 | return error; | |
842 | ||
843 | transport_configure_device(&starget->dev); | |
4cb077d9 | 844 | device_enable_async_suspend(&sdev->sdev_gendev); |
1da177e4 LT |
845 | error = device_add(&sdev->sdev_gendev); |
846 | if (error) { | |
1da177e4 | 847 | printk(KERN_INFO "error 1\n"); |
ee37e09d | 848 | return error; |
1da177e4 | 849 | } |
4cb077d9 | 850 | device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00 | 851 | error = device_add(&sdev->sdev_dev); |
1da177e4 LT |
852 | if (error) { |
853 | printk(KERN_INFO "error 2\n"); | |
860dc736 | 854 | device_del(&sdev->sdev_gendev); |
ee37e09d | 855 | return error; |
1da177e4 | 856 | } |
860dc736 JB |
857 | transport_add_device(&sdev->sdev_gendev); |
858 | sdev->is_visible = 1; | |
1da177e4 | 859 | |
bfd12944 | 860 | /* create queue files, which may be writable, depending on the host */ |
4a84067d VD |
861 | if (sdev->host->hostt->change_queue_depth) { |
862 | error = device_create_file(&sdev->sdev_gendev, | |
863 | &sdev_attr_queue_depth_rw); | |
864 | error = device_create_file(&sdev->sdev_gendev, | |
865 | &sdev_attr_queue_ramp_up_period); | |
866 | } | |
bfd12944 KS |
867 | else |
868 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
860dc736 | 869 | if (error) |
ee37e09d | 870 | return error; |
860dc736 | 871 | |
bfd12944 KS |
872 | if (sdev->host->hostt->change_queue_type) |
873 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
874 | else | |
875 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
860dc736 | 876 | if (error) |
ee37e09d | 877 | return error; |
bfd12944 | 878 | |
97f46ae4 | 879 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
880 | |
881 | if (error) | |
860dc736 JB |
882 | /* we're treating error on bsg register as non-fatal, |
883 | * so pretend nothing went wrong */ | |
80ed71ce JB |
884 | sdev_printk(KERN_INFO, sdev, |
885 | "Failed to register bsg queue, errno=%d\n", error); | |
886 | ||
bfd12944 | 887 | /* add additional host specific attributes */ |
1da177e4 LT |
888 | if (sdev->host->hostt->sdev_attrs) { |
889 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 890 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 | 891 | sdev->host->hostt->sdev_attrs[i]); |
860dc736 | 892 | if (error) |
ee37e09d | 893 | return error; |
1da177e4 LT |
894 | } |
895 | } | |
1da177e4 | 896 | |
1da177e4 LT |
897 | return error; |
898 | } | |
899 | ||
903f4fed | 900 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 901 | { |
df133c21 JB |
902 | struct device *dev = &sdev->sdev_gendev; |
903 | ||
860dc736 JB |
904 | if (sdev->is_visible) { |
905 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) | |
906 | return; | |
1da177e4 | 907 | |
860dc736 JB |
908 | bsg_unregister_queue(sdev->request_queue); |
909 | device_unregister(&sdev->sdev_dev); | |
910 | transport_remove_device(dev); | |
911 | device_del(dev); | |
912 | } else | |
913 | put_device(&sdev->sdev_dev); | |
1da177e4 LT |
914 | scsi_device_set_state(sdev, SDEV_DEL); |
915 | if (sdev->host->hostt->slave_destroy) | |
916 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 JB |
917 | transport_destroy_device(dev); |
918 | put_device(dev); | |
903f4fed AS |
919 | } |
920 | ||
921 | /** | |
922 | * scsi_remove_device - unregister a device from the scsi bus | |
923 | * @sdev: scsi_device to unregister | |
924 | **/ | |
925 | void scsi_remove_device(struct scsi_device *sdev) | |
926 | { | |
54195002 AS |
927 | struct Scsi_Host *shost = sdev->host; |
928 | ||
0b950672 | 929 | mutex_lock(&shost->scan_mutex); |
903f4fed | 930 | __scsi_remove_device(sdev); |
0b950672 | 931 | mutex_unlock(&shost->scan_mutex); |
1da177e4 LT |
932 | } |
933 | EXPORT_SYMBOL(scsi_remove_device); | |
934 | ||
44818efb | 935 | static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4 LT |
936 | { |
937 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
938 | unsigned long flags; | |
a64358db | 939 | struct scsi_device *sdev; |
1da177e4 LT |
940 | |
941 | spin_lock_irqsave(shost->host_lock, flags); | |
942 | starget->reap_ref++; | |
a64358db AS |
943 | restart: |
944 | list_for_each_entry(sdev, &shost->__devices, siblings) { | |
1da177e4 | 945 | if (sdev->channel != starget->channel || |
a64358db AS |
946 | sdev->id != starget->id || |
947 | sdev->sdev_state == SDEV_DEL) | |
1da177e4 LT |
948 | continue; |
949 | spin_unlock_irqrestore(shost->host_lock, flags); | |
950 | scsi_remove_device(sdev); | |
951 | spin_lock_irqsave(shost->host_lock, flags); | |
a64358db | 952 | goto restart; |
1da177e4 LT |
953 | } |
954 | spin_unlock_irqrestore(shost->host_lock, flags); | |
955 | scsi_target_reap(starget); | |
956 | } | |
957 | ||
20b1e674 PM |
958 | static int __remove_child (struct device * dev, void * data) |
959 | { | |
960 | if (scsi_is_target_device(dev)) | |
961 | __scsi_remove_target(to_scsi_target(dev)); | |
962 | return 0; | |
963 | } | |
964 | ||
1da177e4 LT |
965 | /** |
966 | * scsi_remove_target - try to remove a target and all its devices | |
967 | * @dev: generic starget or parent of generic stargets to be removed | |
968 | * | |
969 | * Note: This is slightly racy. It is possible that if the user | |
970 | * requests the addition of another device then the target won't be | |
971 | * removed. | |
972 | */ | |
973 | void scsi_remove_target(struct device *dev) | |
974 | { | |
20b1e674 | 975 | struct device *rdev; |
1da177e4 LT |
976 | |
977 | if (scsi_is_target_device(dev)) { | |
978 | __scsi_remove_target(to_scsi_target(dev)); | |
979 | return; | |
980 | } | |
981 | ||
982 | rdev = get_device(dev); | |
20b1e674 | 983 | device_for_each_child(dev, NULL, __remove_child); |
1da177e4 LT |
984 | put_device(rdev); |
985 | } | |
986 | EXPORT_SYMBOL(scsi_remove_target); | |
987 | ||
988 | int scsi_register_driver(struct device_driver *drv) | |
989 | { | |
990 | drv->bus = &scsi_bus_type; | |
991 | ||
992 | return driver_register(drv); | |
993 | } | |
994 | EXPORT_SYMBOL(scsi_register_driver); | |
995 | ||
996 | int scsi_register_interface(struct class_interface *intf) | |
997 | { | |
998 | intf->class = &sdev_class; | |
999 | ||
1000 | return class_interface_register(intf); | |
1001 | } | |
1002 | EXPORT_SYMBOL(scsi_register_interface); | |
1003 | ||
1da177e4 LT |
1004 | /** |
1005 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1006 | * @shost: scsi host struct to add to subsystem | |
1da177e4 LT |
1007 | **/ |
1008 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1009 | { | |
1010 | int error, i; | |
1011 | ||
f7120a4f | 1012 | /* add host specific attributes */ |
1da177e4 LT |
1013 | if (shost->hostt->shost_attrs) { |
1014 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1015 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1016 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1017 | if (error) |
1018 | return error; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1023 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1024 | return 0; |
1025 | } | |
1026 | ||
bfd12944 KS |
1027 | static struct device_type scsi_dev_type = { |
1028 | .name = "scsi_device", | |
1029 | .release = scsi_device_dev_release, | |
1030 | .groups = scsi_sdev_attr_groups, | |
1031 | }; | |
1032 | ||
1da177e4 LT |
1033 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1034 | { | |
1035 | unsigned long flags; | |
1036 | struct Scsi_Host *shost = sdev->host; | |
1037 | struct scsi_target *starget = sdev->sdev_target; | |
1038 | ||
1039 | device_initialize(&sdev->sdev_gendev); | |
1040 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1041 | sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55 KS |
1042 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
1043 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
1044 | ||
ee959b00 | 1045 | device_initialize(&sdev->sdev_dev); |
37e6ba00 | 1046 | sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00 | 1047 | sdev->sdev_dev.class = &sdev_class; |
71610f55 KS |
1048 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
1049 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1050 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1051 | transport_setup_device(&sdev->sdev_gendev); |
1052 | spin_lock_irqsave(shost->host_lock, flags); | |
1053 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1054 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1055 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1056 | } | |
1057 | ||
1058 | int scsi_is_sdev_device(const struct device *dev) | |
1059 | { | |
13ba9bcb | 1060 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1061 | } |
1062 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1063 | ||
1064 | /* A blank transport template that is used in drivers that don't | |
1065 | * yet implement Transport Attributes */ | |
1066 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |