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 | 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> | |
bc4f2401 | 14 | #include <linux/pm_runtime.h> |
1da177e4 LT |
15 | |
16 | #include <scsi/scsi.h> | |
17 | #include <scsi/scsi_device.h> | |
18 | #include <scsi/scsi_host.h> | |
19 | #include <scsi/scsi_tcq.h> | |
20 | #include <scsi/scsi_transport.h> | |
44818efb | 21 | #include <scsi/scsi_driver.h> |
1da177e4 LT |
22 | |
23 | #include "scsi_priv.h" | |
24 | #include "scsi_logging.h" | |
25 | ||
b0ed4336 HR |
26 | static struct device_type scsi_dev_type; |
27 | ||
0ad78200 | 28 | static const struct { |
1da177e4 LT |
29 | enum scsi_device_state value; |
30 | char *name; | |
31 | } sdev_states[] = { | |
32 | { SDEV_CREATED, "created" }, | |
33 | { SDEV_RUNNING, "running" }, | |
34 | { SDEV_CANCEL, "cancel" }, | |
35 | { SDEV_DEL, "deleted" }, | |
36 | { SDEV_QUIESCE, "quiesce" }, | |
37 | { SDEV_OFFLINE, "offline" }, | |
38 | { SDEV_BLOCK, "blocked" }, | |
6f4267e3 | 39 | { SDEV_CREATED_BLOCK, "created-blocked" }, |
1da177e4 LT |
40 | }; |
41 | ||
42 | const char *scsi_device_state_name(enum scsi_device_state state) | |
43 | { | |
44 | int i; | |
45 | char *name = NULL; | |
46 | ||
6391a113 | 47 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
48 | if (sdev_states[i].value == state) { |
49 | name = sdev_states[i].name; | |
50 | break; | |
51 | } | |
52 | } | |
53 | return name; | |
54 | } | |
55 | ||
0ad78200 | 56 | static const struct { |
d3301874 MA |
57 | enum scsi_host_state value; |
58 | char *name; | |
59 | } shost_states[] = { | |
60 | { SHOST_CREATED, "created" }, | |
61 | { SHOST_RUNNING, "running" }, | |
62 | { SHOST_CANCEL, "cancel" }, | |
63 | { SHOST_DEL, "deleted" }, | |
64 | { SHOST_RECOVERY, "recovery" }, | |
939647ee JB |
65 | { SHOST_CANCEL_RECOVERY, "cancel/recovery" }, |
66 | { SHOST_DEL_RECOVERY, "deleted/recovery", }, | |
d3301874 MA |
67 | }; |
68 | const char *scsi_host_state_name(enum scsi_host_state state) | |
69 | { | |
70 | int i; | |
71 | char *name = NULL; | |
72 | ||
6391a113 | 73 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
74 | if (shost_states[i].value == state) { |
75 | name = shost_states[i].name; | |
76 | break; | |
77 | } | |
78 | } | |
79 | return name; | |
80 | } | |
81 | ||
1da177e4 LT |
82 | static int check_set(unsigned int *val, char *src) |
83 | { | |
84 | char *last; | |
85 | ||
86 | if (strncmp(src, "-", 20) == 0) { | |
87 | *val = SCAN_WILD_CARD; | |
88 | } else { | |
89 | /* | |
90 | * Doesn't check for int overflow | |
91 | */ | |
92 | *val = simple_strtoul(src, &last, 0); | |
93 | if (*last != '\0') | |
94 | return 1; | |
95 | } | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int scsi_scan(struct Scsi_Host *shost, const char *str) | |
100 | { | |
101 | char s1[15], s2[15], s3[15], junk; | |
102 | unsigned int channel, id, lun; | |
103 | int res; | |
104 | ||
105 | res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); | |
106 | if (res != 3) | |
107 | return -EINVAL; | |
108 | if (check_set(&channel, s1)) | |
109 | return -EINVAL; | |
110 | if (check_set(&id, s2)) | |
111 | return -EINVAL; | |
112 | if (check_set(&lun, s3)) | |
113 | return -EINVAL; | |
e02f3f59 CH |
114 | if (shost->transportt->user_scan) |
115 | res = shost->transportt->user_scan(shost, channel, id, lun); | |
116 | else | |
117 | res = scsi_scan_host_selected(shost, channel, id, lun, 1); | |
1da177e4 LT |
118 | return res; |
119 | } | |
120 | ||
121 | /* | |
122 | * shost_show_function: macro to create an attr function that can be used to | |
123 | * show a non-bit field. | |
124 | */ | |
125 | #define shost_show_function(name, field, format_string) \ | |
126 | static ssize_t \ | |
ee959b00 TJ |
127 | show_##name (struct device *dev, struct device_attribute *attr, \ |
128 | char *buf) \ | |
1da177e4 | 129 | { \ |
ee959b00 | 130 | struct Scsi_Host *shost = class_to_shost(dev); \ |
1da177e4 LT |
131 | return snprintf (buf, 20, format_string, shost->field); \ |
132 | } | |
133 | ||
134 | /* | |
135 | * shost_rd_attr: macro to create a function and attribute variable for a | |
136 | * read only field. | |
137 | */ | |
138 | #define shost_rd_attr2(name, field, format_string) \ | |
139 | shost_show_function(name, field, format_string) \ | |
ee959b00 | 140 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
1da177e4 LT |
141 | |
142 | #define shost_rd_attr(field, format_string) \ | |
143 | shost_rd_attr2(field, field, format_string) | |
144 | ||
145 | /* | |
146 | * Create the actual show/store functions and data structures. | |
147 | */ | |
148 | ||
ee959b00 TJ |
149 | static ssize_t |
150 | store_scan(struct device *dev, struct device_attribute *attr, | |
151 | const char *buf, size_t count) | |
1da177e4 | 152 | { |
ee959b00 | 153 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
154 | int res; |
155 | ||
156 | res = scsi_scan(shost, buf); | |
157 | if (res == 0) | |
158 | res = count; | |
159 | return res; | |
160 | }; | |
ee959b00 | 161 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
1da177e4 | 162 | |
d3301874 | 163 | static ssize_t |
ee959b00 TJ |
164 | store_shost_state(struct device *dev, struct device_attribute *attr, |
165 | const char *buf, size_t count) | |
d3301874 MA |
166 | { |
167 | int i; | |
ee959b00 | 168 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
169 | enum scsi_host_state state = 0; |
170 | ||
6391a113 | 171 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
d3301874 MA |
172 | const int len = strlen(shost_states[i].name); |
173 | if (strncmp(shost_states[i].name, buf, len) == 0 && | |
174 | buf[len] == '\n') { | |
175 | state = shost_states[i].value; | |
176 | break; | |
177 | } | |
178 | } | |
179 | if (!state) | |
180 | return -EINVAL; | |
181 | ||
182 | if (scsi_host_set_state(shost, state)) | |
183 | return -EINVAL; | |
184 | return count; | |
185 | } | |
186 | ||
187 | static ssize_t | |
ee959b00 | 188 | show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
d3301874 | 189 | { |
ee959b00 | 190 | struct Scsi_Host *shost = class_to_shost(dev); |
d3301874 MA |
191 | const char *name = scsi_host_state_name(shost->shost_state); |
192 | ||
193 | if (!name) | |
194 | return -EINVAL; | |
195 | ||
196 | return snprintf(buf, 20, "%s\n", name); | |
197 | } | |
198 | ||
ee959b00 TJ |
199 | /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
200 | struct device_attribute dev_attr_hstate = | |
201 | __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); | |
d3301874 | 202 | |
5dc2b89e FT |
203 | static ssize_t |
204 | show_shost_mode(unsigned int mode, char *buf) | |
205 | { | |
206 | ssize_t len = 0; | |
207 | ||
208 | if (mode & MODE_INITIATOR) | |
209 | len = sprintf(buf, "%s", "Initiator"); | |
210 | ||
211 | if (mode & MODE_TARGET) | |
212 | len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); | |
213 | ||
214 | len += sprintf(buf + len, "\n"); | |
215 | ||
216 | return len; | |
217 | } | |
218 | ||
ee959b00 TJ |
219 | static ssize_t |
220 | show_shost_supported_mode(struct device *dev, struct device_attribute *attr, | |
221 | char *buf) | |
5dc2b89e | 222 | { |
ee959b00 | 223 | struct Scsi_Host *shost = class_to_shost(dev); |
7a39ac3f | 224 | unsigned int supported_mode = shost->hostt->supported_mode; |
5dc2b89e | 225 | |
7a39ac3f JB |
226 | if (supported_mode == MODE_UNKNOWN) |
227 | /* by default this should be initiator */ | |
228 | supported_mode = MODE_INITIATOR; | |
229 | ||
230 | return show_shost_mode(supported_mode, buf); | |
5dc2b89e FT |
231 | } |
232 | ||
ee959b00 | 233 | static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
5dc2b89e | 234 | |
ee959b00 TJ |
235 | static ssize_t |
236 | show_shost_active_mode(struct device *dev, | |
237 | struct device_attribute *attr, char *buf) | |
5dc2b89e | 238 | { |
ee959b00 | 239 | struct Scsi_Host *shost = class_to_shost(dev); |
5dc2b89e FT |
240 | |
241 | if (shost->active_mode == MODE_UNKNOWN) | |
242 | return snprintf(buf, 20, "unknown\n"); | |
243 | else | |
244 | return show_shost_mode(shost->active_mode, buf); | |
245 | } | |
246 | ||
ee959b00 | 247 | static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
5dc2b89e | 248 | |
1da177e4 LT |
249 | shost_rd_attr(unique_id, "%u\n"); |
250 | shost_rd_attr(host_busy, "%hu\n"); | |
251 | shost_rd_attr(cmd_per_lun, "%hd\n"); | |
ed632da8 | 252 | shost_rd_attr(can_queue, "%hd\n"); |
1da177e4 | 253 | shost_rd_attr(sg_tablesize, "%hu\n"); |
13f05c8d | 254 | shost_rd_attr(sg_prot_tablesize, "%hu\n"); |
1da177e4 | 255 | shost_rd_attr(unchecked_isa_dma, "%d\n"); |
4469f987 MP |
256 | shost_rd_attr(prot_capabilities, "%u\n"); |
257 | shost_rd_attr(prot_guard_type, "%hd\n"); | |
1da177e4 LT |
258 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
259 | ||
f7120a4f HR |
260 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
261 | &dev_attr_unique_id.attr, | |
262 | &dev_attr_host_busy.attr, | |
263 | &dev_attr_cmd_per_lun.attr, | |
264 | &dev_attr_can_queue.attr, | |
265 | &dev_attr_sg_tablesize.attr, | |
13f05c8d | 266 | &dev_attr_sg_prot_tablesize.attr, |
f7120a4f HR |
267 | &dev_attr_unchecked_isa_dma.attr, |
268 | &dev_attr_proc_name.attr, | |
269 | &dev_attr_scan.attr, | |
270 | &dev_attr_hstate.attr, | |
271 | &dev_attr_supported_mode.attr, | |
272 | &dev_attr_active_mode.attr, | |
4469f987 MP |
273 | &dev_attr_prot_capabilities.attr, |
274 | &dev_attr_prot_guard_type.attr, | |
f7120a4f HR |
275 | NULL |
276 | }; | |
277 | ||
278 | struct attribute_group scsi_shost_attr_group = { | |
279 | .attrs = scsi_sysfs_shost_attrs, | |
280 | }; | |
281 | ||
a4dbd674 | 282 | const struct attribute_group *scsi_sysfs_shost_attr_groups[] = { |
f7120a4f | 283 | &scsi_shost_attr_group, |
1da177e4 LT |
284 | NULL |
285 | }; | |
286 | ||
ee959b00 | 287 | static void scsi_device_cls_release(struct device *class_dev) |
1da177e4 LT |
288 | { |
289 | struct scsi_device *sdev; | |
290 | ||
291 | sdev = class_to_sdev(class_dev); | |
292 | put_device(&sdev->sdev_gendev); | |
293 | } | |
294 | ||
65f27f38 | 295 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
1da177e4 LT |
296 | { |
297 | struct scsi_device *sdev; | |
298 | struct device *parent; | |
299 | struct scsi_target *starget; | |
a341cd0f | 300 | struct list_head *this, *tmp; |
1da177e4 LT |
301 | unsigned long flags; |
302 | ||
65f27f38 DH |
303 | sdev = container_of(work, struct scsi_device, ew.work); |
304 | ||
305 | parent = sdev->sdev_gendev.parent; | |
1da177e4 LT |
306 | starget = to_scsi_target(parent); |
307 | ||
308 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
309 | starget->reap_ref++; | |
310 | list_del(&sdev->siblings); | |
311 | list_del(&sdev->same_target_siblings); | |
312 | list_del(&sdev->starved_entry); | |
313 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
314 | ||
a341cd0f JG |
315 | cancel_work_sync(&sdev->event_work); |
316 | ||
317 | list_for_each_safe(this, tmp, &sdev->event_list) { | |
318 | struct scsi_event *evt; | |
319 | ||
320 | evt = list_entry(this, struct scsi_event, node); | |
321 | list_del(&evt->node); | |
322 | kfree(evt); | |
323 | } | |
324 | ||
1da177e4 LT |
325 | if (sdev->request_queue) { |
326 | sdev->request_queue->queuedata = NULL; | |
65110b21 | 327 | /* user context needed to free queue */ |
1da177e4 | 328 | scsi_free_queue(sdev->request_queue); |
c2a9331c | 329 | /* temporary expedient, try to catch use of queue lock |
330 | * after free of sdev */ | |
331 | sdev->request_queue = NULL; | |
1da177e4 LT |
332 | } |
333 | ||
334 | scsi_target_reap(scsi_target(sdev)); | |
335 | ||
336 | kfree(sdev->inquiry); | |
337 | kfree(sdev); | |
338 | ||
339 | if (parent) | |
340 | put_device(parent); | |
341 | } | |
342 | ||
65110b21 JB |
343 | static void scsi_device_dev_release(struct device *dev) |
344 | { | |
ffedb452 | 345 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 346 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 347 | &sdp->ew); |
65110b21 JB |
348 | } |
349 | ||
52c1da39 | 350 | static struct class sdev_class = { |
1da177e4 | 351 | .name = "scsi_device", |
ee959b00 | 352 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
353 | }; |
354 | ||
355 | /* all probing is done in the individual ->probe routines */ | |
356 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
357 | { | |
b0ed4336 HR |
358 | struct scsi_device *sdp; |
359 | ||
360 | if (dev->type != &scsi_dev_type) | |
361 | return 0; | |
362 | ||
363 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
364 | if (sdp->no_uld_attach) |
365 | return 0; | |
366 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
367 | } | |
368 | ||
7eff2e7a | 369 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 370 | { |
1f42ea7b JB |
371 | struct scsi_device *sdev; |
372 | ||
373 | if (dev->type != &scsi_dev_type) | |
374 | return 0; | |
375 | ||
376 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 377 | |
7eff2e7a | 378 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
379 | return 0; |
380 | } | |
381 | ||
1da177e4 LT |
382 | struct bus_type scsi_bus_type = { |
383 | .name = "scsi", | |
384 | .match = scsi_bus_match, | |
d7b8bcb0 | 385 | .uevent = scsi_bus_uevent, |
e6da54d8 | 386 | #ifdef CONFIG_PM_OPS |
db5bd1e0 | 387 | .pm = &scsi_bus_pm_ops, |
e6da54d8 | 388 | #endif |
1da177e4 | 389 | }; |
a6a8d9f8 | 390 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
391 | |
392 | int scsi_sysfs_register(void) | |
393 | { | |
394 | int error; | |
395 | ||
396 | error = bus_register(&scsi_bus_type); | |
397 | if (!error) { | |
398 | error = class_register(&sdev_class); | |
399 | if (error) | |
400 | bus_unregister(&scsi_bus_type); | |
401 | } | |
402 | ||
403 | return error; | |
404 | } | |
405 | ||
406 | void scsi_sysfs_unregister(void) | |
407 | { | |
408 | class_unregister(&sdev_class); | |
409 | bus_unregister(&scsi_bus_type); | |
410 | } | |
411 | ||
412 | /* | |
413 | * sdev_show_function: macro to create an attr function that can be used to | |
414 | * show a non-bit field. | |
415 | */ | |
416 | #define sdev_show_function(field, format_string) \ | |
417 | static ssize_t \ | |
ee959b00 TJ |
418 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
419 | char *buf) \ | |
1da177e4 LT |
420 | { \ |
421 | struct scsi_device *sdev; \ | |
422 | sdev = to_scsi_device(dev); \ | |
423 | return snprintf (buf, 20, format_string, sdev->field); \ | |
424 | } \ | |
425 | ||
426 | /* | |
427 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
428 | * read only field. | |
429 | */ | |
430 | #define sdev_rd_attr(field, format_string) \ | |
431 | sdev_show_function(field, format_string) \ | |
432 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
433 | ||
434 | ||
435 | /* | |
160e7f67 | 436 | * sdev_rw_attr: create a function and attribute variable for a |
1da177e4 LT |
437 | * read/write field. |
438 | */ | |
439 | #define sdev_rw_attr(field, format_string) \ | |
440 | sdev_show_function(field, format_string) \ | |
441 | \ | |
442 | static ssize_t \ | |
ee959b00 TJ |
443 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
444 | const char *buf, size_t count) \ | |
1da177e4 LT |
445 | { \ |
446 | struct scsi_device *sdev; \ | |
447 | sdev = to_scsi_device(dev); \ | |
160e7f67 | 448 | sscanf (buf, format_string, &sdev->field); \ |
1da177e4 LT |
449 | return count; \ |
450 | } \ | |
451 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
452 | ||
453 | /* Currently we don't export bit fields, but we might in future, | |
454 | * so leave this code in */ | |
455 | #if 0 | |
456 | /* | |
457 | * sdev_rd_attr: create a function and attribute variable for a | |
458 | * read/write bit field. | |
459 | */ | |
460 | #define sdev_rw_attr_bit(field) \ | |
461 | sdev_show_function(field, "%d\n") \ | |
462 | \ | |
463 | static ssize_t \ | |
ee959b00 TJ |
464 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
465 | const char *buf, size_t count) \ | |
1da177e4 LT |
466 | { \ |
467 | int ret; \ | |
468 | struct scsi_device *sdev; \ | |
469 | ret = scsi_sdev_check_buf_bit(buf); \ | |
470 | if (ret >= 0) { \ | |
471 | sdev = to_scsi_device(dev); \ | |
472 | sdev->field = ret; \ | |
473 | ret = count; \ | |
474 | } \ | |
475 | return ret; \ | |
476 | } \ | |
477 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
478 | ||
479 | /* | |
480 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
481 | * else return -EINVAL. | |
482 | */ | |
483 | static int scsi_sdev_check_buf_bit(const char *buf) | |
484 | { | |
485 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
486 | if (buf[0] == '1') | |
487 | return 1; | |
488 | else if (buf[0] == '0') | |
489 | return 0; | |
490 | else | |
491 | return -EINVAL; | |
492 | } else | |
493 | return -EINVAL; | |
494 | } | |
495 | #endif | |
496 | /* | |
497 | * Create the actual show/store functions and data structures. | |
498 | */ | |
499 | sdev_rd_attr (device_blocked, "%d\n"); | |
500 | sdev_rd_attr (queue_depth, "%d\n"); | |
501 | sdev_rd_attr (type, "%d\n"); | |
502 | sdev_rd_attr (scsi_level, "%d\n"); | |
503 | sdev_rd_attr (vendor, "%.8s\n"); | |
504 | sdev_rd_attr (model, "%.16s\n"); | |
505 | sdev_rd_attr (rev, "%.4s\n"); | |
506 | ||
242f9dcb JA |
507 | /* |
508 | * TODO: can we make these symlinks to the block layer ones? | |
509 | */ | |
1da177e4 | 510 | static ssize_t |
10523b3b | 511 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
512 | { |
513 | struct scsi_device *sdev; | |
514 | sdev = to_scsi_device(dev); | |
242f9dcb | 515 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
516 | } |
517 | ||
518 | static ssize_t | |
ee959b00 TJ |
519 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
520 | const char *buf, size_t count) | |
1da177e4 LT |
521 | { |
522 | struct scsi_device *sdev; | |
523 | int timeout; | |
524 | sdev = to_scsi_device(dev); | |
525 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 526 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
527 | return count; |
528 | } | |
529 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
530 | ||
531 | static ssize_t | |
ee959b00 TJ |
532 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
533 | const char *buf, size_t count) | |
1da177e4 LT |
534 | { |
535 | scsi_rescan_device(dev); | |
536 | return count; | |
537 | } | |
538 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
539 | ||
d9a9cdfb AS |
540 | static void sdev_store_delete_callback(struct device *dev) |
541 | { | |
542 | scsi_remove_device(to_scsi_device(dev)); | |
543 | } | |
544 | ||
ee959b00 TJ |
545 | static ssize_t |
546 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
547 | const char *buf, size_t count) | |
1da177e4 | 548 | { |
d9a9cdfb AS |
549 | int rc; |
550 | ||
551 | /* An attribute cannot be unregistered by one of its own methods, | |
552 | * so we have to use this roundabout approach. | |
553 | */ | |
554 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
555 | if (rc) | |
556 | count = rc; | |
1da177e4 LT |
557 | return count; |
558 | }; | |
559 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
560 | ||
561 | static ssize_t | |
ee959b00 TJ |
562 | store_state_field(struct device *dev, struct device_attribute *attr, |
563 | const char *buf, size_t count) | |
1da177e4 LT |
564 | { |
565 | int i; | |
566 | struct scsi_device *sdev = to_scsi_device(dev); | |
567 | enum scsi_device_state state = 0; | |
568 | ||
6391a113 | 569 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
570 | const int len = strlen(sdev_states[i].name); |
571 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
572 | buf[len] == '\n') { | |
573 | state = sdev_states[i].value; | |
574 | break; | |
575 | } | |
576 | } | |
577 | if (!state) | |
578 | return -EINVAL; | |
579 | ||
580 | if (scsi_device_set_state(sdev, state)) | |
581 | return -EINVAL; | |
582 | return count; | |
583 | } | |
584 | ||
585 | static ssize_t | |
10523b3b | 586 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
587 | { |
588 | struct scsi_device *sdev = to_scsi_device(dev); | |
589 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
590 | ||
591 | if (!name) | |
592 | return -EINVAL; | |
593 | ||
594 | return snprintf(buf, 20, "%s\n", name); | |
595 | } | |
596 | ||
597 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
598 | ||
599 | static ssize_t | |
ee959b00 TJ |
600 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
601 | char *buf) | |
1da177e4 LT |
602 | { |
603 | struct scsi_device *sdev = to_scsi_device(dev); | |
604 | const char *name = "none"; | |
605 | ||
606 | if (sdev->ordered_tags) | |
607 | name = "ordered"; | |
608 | else if (sdev->simple_tags) | |
609 | name = "simple"; | |
610 | ||
611 | return snprintf(buf, 20, "%s\n", name); | |
612 | } | |
613 | ||
614 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
615 | ||
616 | static ssize_t | |
ee959b00 | 617 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
618 | { |
619 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
620 | } | |
621 | ||
622 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
623 | ||
624 | #define show_sdev_iostat(field) \ | |
625 | static ssize_t \ | |
ee959b00 TJ |
626 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
627 | char *buf) \ | |
1da177e4 LT |
628 | { \ |
629 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
630 | unsigned long long count = atomic_read(&sdev->field); \ | |
631 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
632 | } \ | |
633 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
634 | ||
635 | show_sdev_iostat(iorequest_cnt); | |
636 | show_sdev_iostat(iodone_cnt); | |
637 | show_sdev_iostat(ioerr_cnt); | |
638 | ||
d7b8bcb0 MT |
639 | static ssize_t |
640 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
641 | { | |
642 | struct scsi_device *sdev; | |
643 | sdev = to_scsi_device(dev); | |
644 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
645 | } | |
646 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 647 | |
a341cd0f JG |
648 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
649 | static ssize_t \ | |
650 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 651 | char *buf) \ |
a341cd0f JG |
652 | { \ |
653 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
654 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
655 | return snprintf(buf, 20, "%d\n", val); \ | |
656 | } | |
657 | ||
658 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
659 | static ssize_t \ | |
ee959b00 | 660 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
661 | const char *buf, size_t count) \ |
662 | { \ | |
663 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
664 | int val = simple_strtoul(buf, NULL, 0); \ | |
665 | if (val == 0) \ | |
666 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
667 | else if (val == 1) \ | |
668 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
669 | else \ | |
670 | return -EINVAL; \ | |
671 | return count; \ | |
672 | } | |
673 | ||
674 | #define DECLARE_EVT(name, Cap_name) \ | |
675 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
676 | DECLARE_EVT_STORE(name, Cap_name) \ | |
677 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
678 | sdev_store_evt_##name); | |
679 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
680 | ||
681 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
682 | ||
1da177e4 | 683 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
684 | static struct attribute *scsi_sdev_attrs[] = { |
685 | &dev_attr_device_blocked.attr, | |
686 | &dev_attr_type.attr, | |
687 | &dev_attr_scsi_level.attr, | |
688 | &dev_attr_vendor.attr, | |
689 | &dev_attr_model.attr, | |
690 | &dev_attr_rev.attr, | |
691 | &dev_attr_rescan.attr, | |
692 | &dev_attr_delete.attr, | |
693 | &dev_attr_state.attr, | |
694 | &dev_attr_timeout.attr, | |
695 | &dev_attr_iocounterbits.attr, | |
696 | &dev_attr_iorequest_cnt.attr, | |
697 | &dev_attr_iodone_cnt.attr, | |
698 | &dev_attr_ioerr_cnt.attr, | |
699 | &dev_attr_modalias.attr, | |
a341cd0f | 700 | REF_EVT(media_change), |
bfd12944 KS |
701 | NULL |
702 | }; | |
703 | ||
704 | static struct attribute_group scsi_sdev_attr_group = { | |
705 | .attrs = scsi_sdev_attrs, | |
706 | }; | |
707 | ||
a4dbd674 | 708 | static const struct attribute_group *scsi_sdev_attr_groups[] = { |
bfd12944 | 709 | &scsi_sdev_attr_group, |
1da177e4 LT |
710 | NULL |
711 | }; | |
712 | ||
ee959b00 TJ |
713 | static ssize_t |
714 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
715 | const char *buf, size_t count) | |
1da177e4 LT |
716 | { |
717 | int depth, retval; | |
718 | struct scsi_device *sdev = to_scsi_device(dev); | |
719 | struct scsi_host_template *sht = sdev->host->hostt; | |
720 | ||
721 | if (!sht->change_queue_depth) | |
722 | return -EINVAL; | |
723 | ||
724 | depth = simple_strtoul(buf, NULL, 0); | |
725 | ||
726 | if (depth < 1) | |
727 | return -EINVAL; | |
728 | ||
e881a172 MC |
729 | retval = sht->change_queue_depth(sdev, depth, |
730 | SCSI_QDEPTH_DEFAULT); | |
1da177e4 LT |
731 | if (retval < 0) |
732 | return retval; | |
733 | ||
4a84067d VD |
734 | sdev->max_queue_depth = sdev->queue_depth; |
735 | ||
1da177e4 LT |
736 | return count; |
737 | } | |
738 | ||
739 | static struct device_attribute sdev_attr_queue_depth_rw = | |
740 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
741 | sdev_store_queue_depth_rw); | |
742 | ||
4a84067d VD |
743 | static ssize_t |
744 | sdev_show_queue_ramp_up_period(struct device *dev, | |
745 | struct device_attribute *attr, | |
746 | char *buf) | |
747 | { | |
748 | struct scsi_device *sdev; | |
749 | sdev = to_scsi_device(dev); | |
750 | return snprintf(buf, 20, "%u\n", | |
751 | jiffies_to_msecs(sdev->queue_ramp_up_period)); | |
752 | } | |
753 | ||
754 | static ssize_t | |
755 | sdev_store_queue_ramp_up_period(struct device *dev, | |
756 | struct device_attribute *attr, | |
757 | const char *buf, size_t count) | |
758 | { | |
759 | struct scsi_device *sdev = to_scsi_device(dev); | |
760 | unsigned long period; | |
761 | ||
762 | if (strict_strtoul(buf, 10, &period)) | |
763 | return -EINVAL; | |
764 | ||
765 | sdev->queue_ramp_up_period = msecs_to_jiffies(period); | |
766 | return period; | |
767 | } | |
768 | ||
769 | static struct device_attribute sdev_attr_queue_ramp_up_period = | |
770 | __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, | |
771 | sdev_show_queue_ramp_up_period, | |
772 | sdev_store_queue_ramp_up_period); | |
773 | ||
ee959b00 TJ |
774 | static ssize_t |
775 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
776 | const char *buf, size_t count) | |
1da177e4 LT |
777 | { |
778 | struct scsi_device *sdev = to_scsi_device(dev); | |
779 | struct scsi_host_template *sht = sdev->host->hostt; | |
780 | int tag_type = 0, retval; | |
781 | int prev_tag_type = scsi_get_tag_type(sdev); | |
782 | ||
783 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
784 | return -EINVAL; | |
785 | ||
786 | if (strncmp(buf, "ordered", 7) == 0) | |
787 | tag_type = MSG_ORDERED_TAG; | |
788 | else if (strncmp(buf, "simple", 6) == 0) | |
789 | tag_type = MSG_SIMPLE_TAG; | |
790 | else if (strncmp(buf, "none", 4) != 0) | |
791 | return -EINVAL; | |
792 | ||
793 | if (tag_type == prev_tag_type) | |
794 | return count; | |
795 | ||
796 | retval = sht->change_queue_type(sdev, tag_type); | |
797 | if (retval < 0) | |
798 | return retval; | |
799 | ||
800 | return count; | |
801 | } | |
802 | ||
643eb2d9 JB |
803 | static int scsi_target_add(struct scsi_target *starget) |
804 | { | |
805 | int error; | |
806 | ||
807 | if (starget->state != STARGET_CREATED) | |
808 | return 0; | |
809 | ||
810 | error = device_add(&starget->dev); | |
811 | if (error) { | |
812 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
643eb2d9 JB |
813 | return error; |
814 | } | |
815 | transport_add_device(&starget->dev); | |
816 | starget->state = STARGET_RUNNING; | |
817 | ||
bc4f2401 AS |
818 | pm_runtime_set_active(&starget->dev); |
819 | pm_runtime_enable(&starget->dev); | |
820 | device_enable_async_suspend(&starget->dev); | |
821 | ||
643eb2d9 JB |
822 | return 0; |
823 | } | |
824 | ||
1da177e4 LT |
825 | static struct device_attribute sdev_attr_queue_type_rw = |
826 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
827 | sdev_store_queue_type_rw); | |
828 | ||
1da177e4 LT |
829 | /** |
830 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
831 | * @sdev: scsi_device to add | |
832 | * | |
833 | * Return value: | |
834 | * 0 on Success / non-zero on Failure | |
835 | **/ | |
836 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
837 | { | |
838 | int error, i; | |
80ed71ce | 839 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 840 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 | 841 | |
ee37e09d AS |
842 | error = scsi_device_set_state(sdev, SDEV_RUNNING); |
843 | if (error) | |
1da177e4 LT |
844 | return error; |
845 | ||
643eb2d9 JB |
846 | error = scsi_target_add(starget); |
847 | if (error) | |
848 | return error; | |
849 | ||
850 | transport_configure_device(&starget->dev); | |
bc4f2401 | 851 | |
4cb077d9 | 852 | device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f2401 AS |
853 | scsi_autopm_get_target(starget); |
854 | pm_runtime_set_active(&sdev->sdev_gendev); | |
855 | pm_runtime_forbid(&sdev->sdev_gendev); | |
856 | pm_runtime_enable(&sdev->sdev_gendev); | |
857 | scsi_autopm_put_target(starget); | |
858 | ||
859 | /* The following call will keep sdev active indefinitely, until | |
860 | * its driver does a corresponding scsi_autopm_pm_device(). Only | |
861 | * drivers supporting autosuspend will do this. | |
862 | */ | |
863 | scsi_autopm_get_device(sdev); | |
864 | ||
1da177e4 LT |
865 | error = device_add(&sdev->sdev_gendev); |
866 | if (error) { | |
1da177e4 | 867 | printk(KERN_INFO "error 1\n"); |
ee37e09d | 868 | return error; |
1da177e4 | 869 | } |
4cb077d9 | 870 | device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00 | 871 | error = device_add(&sdev->sdev_dev); |
1da177e4 LT |
872 | if (error) { |
873 | printk(KERN_INFO "error 2\n"); | |
860dc736 | 874 | device_del(&sdev->sdev_gendev); |
ee37e09d | 875 | return error; |
1da177e4 | 876 | } |
860dc736 JB |
877 | transport_add_device(&sdev->sdev_gendev); |
878 | sdev->is_visible = 1; | |
1da177e4 | 879 | |
bfd12944 | 880 | /* create queue files, which may be writable, depending on the host */ |
4a84067d VD |
881 | if (sdev->host->hostt->change_queue_depth) { |
882 | error = device_create_file(&sdev->sdev_gendev, | |
883 | &sdev_attr_queue_depth_rw); | |
884 | error = device_create_file(&sdev->sdev_gendev, | |
885 | &sdev_attr_queue_ramp_up_period); | |
886 | } | |
bfd12944 KS |
887 | else |
888 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
860dc736 | 889 | if (error) |
ee37e09d | 890 | return error; |
860dc736 | 891 | |
bfd12944 KS |
892 | if (sdev->host->hostt->change_queue_type) |
893 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
894 | else | |
895 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
860dc736 | 896 | if (error) |
ee37e09d | 897 | return error; |
bfd12944 | 898 | |
97f46ae4 | 899 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
900 | |
901 | if (error) | |
860dc736 JB |
902 | /* we're treating error on bsg register as non-fatal, |
903 | * so pretend nothing went wrong */ | |
80ed71ce JB |
904 | sdev_printk(KERN_INFO, sdev, |
905 | "Failed to register bsg queue, errno=%d\n", error); | |
906 | ||
bfd12944 | 907 | /* add additional host specific attributes */ |
1da177e4 LT |
908 | if (sdev->host->hostt->sdev_attrs) { |
909 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 910 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 | 911 | sdev->host->hostt->sdev_attrs[i]); |
860dc736 | 912 | if (error) |
ee37e09d | 913 | return error; |
1da177e4 LT |
914 | } |
915 | } | |
1da177e4 | 916 | |
1da177e4 LT |
917 | return error; |
918 | } | |
919 | ||
903f4fed | 920 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 921 | { |
df133c21 JB |
922 | struct device *dev = &sdev->sdev_gendev; |
923 | ||
860dc736 JB |
924 | if (sdev->is_visible) { |
925 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) | |
926 | return; | |
1da177e4 | 927 | |
860dc736 JB |
928 | bsg_unregister_queue(sdev->request_queue); |
929 | device_unregister(&sdev->sdev_dev); | |
930 | transport_remove_device(dev); | |
931 | device_del(dev); | |
932 | } else | |
933 | put_device(&sdev->sdev_dev); | |
1da177e4 LT |
934 | scsi_device_set_state(sdev, SDEV_DEL); |
935 | if (sdev->host->hostt->slave_destroy) | |
936 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 JB |
937 | transport_destroy_device(dev); |
938 | put_device(dev); | |
903f4fed AS |
939 | } |
940 | ||
941 | /** | |
942 | * scsi_remove_device - unregister a device from the scsi bus | |
943 | * @sdev: scsi_device to unregister | |
944 | **/ | |
945 | void scsi_remove_device(struct scsi_device *sdev) | |
946 | { | |
54195002 AS |
947 | struct Scsi_Host *shost = sdev->host; |
948 | ||
0b950672 | 949 | mutex_lock(&shost->scan_mutex); |
903f4fed | 950 | __scsi_remove_device(sdev); |
0b950672 | 951 | mutex_unlock(&shost->scan_mutex); |
1da177e4 LT |
952 | } |
953 | EXPORT_SYMBOL(scsi_remove_device); | |
954 | ||
44818efb | 955 | static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4 LT |
956 | { |
957 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
958 | unsigned long flags; | |
a64358db | 959 | struct scsi_device *sdev; |
1da177e4 LT |
960 | |
961 | spin_lock_irqsave(shost->host_lock, flags); | |
962 | starget->reap_ref++; | |
a64358db AS |
963 | restart: |
964 | list_for_each_entry(sdev, &shost->__devices, siblings) { | |
1da177e4 | 965 | if (sdev->channel != starget->channel || |
a64358db AS |
966 | sdev->id != starget->id || |
967 | sdev->sdev_state == SDEV_DEL) | |
1da177e4 LT |
968 | continue; |
969 | spin_unlock_irqrestore(shost->host_lock, flags); | |
970 | scsi_remove_device(sdev); | |
971 | spin_lock_irqsave(shost->host_lock, flags); | |
a64358db | 972 | goto restart; |
1da177e4 LT |
973 | } |
974 | spin_unlock_irqrestore(shost->host_lock, flags); | |
975 | scsi_target_reap(starget); | |
976 | } | |
977 | ||
20b1e674 | 978 | static int __remove_child (struct device * dev, void * data) |
979 | { | |
980 | if (scsi_is_target_device(dev)) | |
981 | __scsi_remove_target(to_scsi_target(dev)); | |
982 | return 0; | |
983 | } | |
984 | ||
1da177e4 LT |
985 | /** |
986 | * scsi_remove_target - try to remove a target and all its devices | |
987 | * @dev: generic starget or parent of generic stargets to be removed | |
988 | * | |
989 | * Note: This is slightly racy. It is possible that if the user | |
990 | * requests the addition of another device then the target won't be | |
991 | * removed. | |
992 | */ | |
993 | void scsi_remove_target(struct device *dev) | |
994 | { | |
20b1e674 | 995 | struct device *rdev; |
1da177e4 LT |
996 | |
997 | if (scsi_is_target_device(dev)) { | |
998 | __scsi_remove_target(to_scsi_target(dev)); | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | rdev = get_device(dev); | |
20b1e674 | 1003 | device_for_each_child(dev, NULL, __remove_child); |
1da177e4 LT |
1004 | put_device(rdev); |
1005 | } | |
1006 | EXPORT_SYMBOL(scsi_remove_target); | |
1007 | ||
1008 | int scsi_register_driver(struct device_driver *drv) | |
1009 | { | |
1010 | drv->bus = &scsi_bus_type; | |
1011 | ||
1012 | return driver_register(drv); | |
1013 | } | |
1014 | EXPORT_SYMBOL(scsi_register_driver); | |
1015 | ||
1016 | int scsi_register_interface(struct class_interface *intf) | |
1017 | { | |
1018 | intf->class = &sdev_class; | |
1019 | ||
1020 | return class_interface_register(intf); | |
1021 | } | |
1022 | EXPORT_SYMBOL(scsi_register_interface); | |
1023 | ||
1da177e4 LT |
1024 | /** |
1025 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1026 | * @shost: scsi host struct to add to subsystem | |
1da177e4 LT |
1027 | **/ |
1028 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1029 | { | |
1030 | int error, i; | |
1031 | ||
f7120a4f | 1032 | /* add host specific attributes */ |
1da177e4 LT |
1033 | if (shost->hostt->shost_attrs) { |
1034 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1035 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1036 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1037 | if (error) |
1038 | return error; | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1043 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1044 | return 0; |
1045 | } | |
1046 | ||
bfd12944 KS |
1047 | static struct device_type scsi_dev_type = { |
1048 | .name = "scsi_device", | |
1049 | .release = scsi_device_dev_release, | |
1050 | .groups = scsi_sdev_attr_groups, | |
1051 | }; | |
1052 | ||
1da177e4 LT |
1053 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1054 | { | |
1055 | unsigned long flags; | |
1056 | struct Scsi_Host *shost = sdev->host; | |
1057 | struct scsi_target *starget = sdev->sdev_target; | |
1058 | ||
1059 | device_initialize(&sdev->sdev_gendev); | |
1060 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1061 | sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55 KS |
1062 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
1063 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
1064 | ||
ee959b00 | 1065 | device_initialize(&sdev->sdev_dev); |
37e6ba00 | 1066 | sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00 | 1067 | sdev->sdev_dev.class = &sdev_class; |
71610f55 KS |
1068 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
1069 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1070 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1071 | transport_setup_device(&sdev->sdev_gendev); |
1072 | spin_lock_irqsave(shost->host_lock, flags); | |
1073 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1074 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1075 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1076 | } | |
1077 | ||
1078 | int scsi_is_sdev_device(const struct device *dev) | |
1079 | { | |
13ba9bcb | 1080 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1081 | } |
1082 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1083 | ||
1084 | /* A blank transport template that is used in drivers that don't | |
1085 | * yet implement Transport Attributes */ | |
1086 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |