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 | ||
86cbfb56 JB |
325 | /* NULL queue means the device can't be used */ |
326 | sdev->request_queue = NULL; | |
1da177e4 LT |
327 | |
328 | scsi_target_reap(scsi_target(sdev)); | |
329 | ||
330 | kfree(sdev->inquiry); | |
331 | kfree(sdev); | |
332 | ||
333 | if (parent) | |
334 | put_device(parent); | |
335 | } | |
336 | ||
65110b21 JB |
337 | static void scsi_device_dev_release(struct device *dev) |
338 | { | |
ffedb452 | 339 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 340 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 341 | &sdp->ew); |
65110b21 JB |
342 | } |
343 | ||
52c1da39 | 344 | static struct class sdev_class = { |
1da177e4 | 345 | .name = "scsi_device", |
ee959b00 | 346 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
347 | }; |
348 | ||
349 | /* all probing is done in the individual ->probe routines */ | |
350 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
351 | { | |
b0ed4336 HR |
352 | struct scsi_device *sdp; |
353 | ||
354 | if (dev->type != &scsi_dev_type) | |
355 | return 0; | |
356 | ||
357 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
358 | if (sdp->no_uld_attach) |
359 | return 0; | |
360 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
361 | } | |
362 | ||
7eff2e7a | 363 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 364 | { |
1f42ea7b JB |
365 | struct scsi_device *sdev; |
366 | ||
367 | if (dev->type != &scsi_dev_type) | |
368 | return 0; | |
369 | ||
370 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 371 | |
7eff2e7a | 372 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
373 | return 0; |
374 | } | |
375 | ||
1da177e4 LT |
376 | struct bus_type scsi_bus_type = { |
377 | .name = "scsi", | |
378 | .match = scsi_bus_match, | |
d7b8bcb0 | 379 | .uevent = scsi_bus_uevent, |
aa338601 | 380 | #ifdef CONFIG_PM |
db5bd1e0 | 381 | .pm = &scsi_bus_pm_ops, |
e6da54d8 | 382 | #endif |
1da177e4 | 383 | }; |
a6a8d9f8 | 384 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
385 | |
386 | int scsi_sysfs_register(void) | |
387 | { | |
388 | int error; | |
389 | ||
390 | error = bus_register(&scsi_bus_type); | |
391 | if (!error) { | |
392 | error = class_register(&sdev_class); | |
393 | if (error) | |
394 | bus_unregister(&scsi_bus_type); | |
395 | } | |
396 | ||
397 | return error; | |
398 | } | |
399 | ||
400 | void scsi_sysfs_unregister(void) | |
401 | { | |
402 | class_unregister(&sdev_class); | |
403 | bus_unregister(&scsi_bus_type); | |
404 | } | |
405 | ||
406 | /* | |
407 | * sdev_show_function: macro to create an attr function that can be used to | |
408 | * show a non-bit field. | |
409 | */ | |
410 | #define sdev_show_function(field, format_string) \ | |
411 | static ssize_t \ | |
ee959b00 TJ |
412 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
413 | char *buf) \ | |
1da177e4 LT |
414 | { \ |
415 | struct scsi_device *sdev; \ | |
416 | sdev = to_scsi_device(dev); \ | |
417 | return snprintf (buf, 20, format_string, sdev->field); \ | |
418 | } \ | |
419 | ||
420 | /* | |
421 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
422 | * read only field. | |
423 | */ | |
424 | #define sdev_rd_attr(field, format_string) \ | |
425 | sdev_show_function(field, format_string) \ | |
426 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
427 | ||
428 | ||
429 | /* | |
160e7f67 | 430 | * sdev_rw_attr: create a function and attribute variable for a |
1da177e4 LT |
431 | * read/write field. |
432 | */ | |
433 | #define sdev_rw_attr(field, format_string) \ | |
434 | sdev_show_function(field, format_string) \ | |
435 | \ | |
436 | static ssize_t \ | |
ee959b00 TJ |
437 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
438 | const char *buf, size_t count) \ | |
1da177e4 LT |
439 | { \ |
440 | struct scsi_device *sdev; \ | |
441 | sdev = to_scsi_device(dev); \ | |
160e7f67 | 442 | sscanf (buf, format_string, &sdev->field); \ |
1da177e4 LT |
443 | return count; \ |
444 | } \ | |
445 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
446 | ||
447 | /* Currently we don't export bit fields, but we might in future, | |
448 | * so leave this code in */ | |
449 | #if 0 | |
450 | /* | |
451 | * sdev_rd_attr: create a function and attribute variable for a | |
452 | * read/write bit field. | |
453 | */ | |
454 | #define sdev_rw_attr_bit(field) \ | |
455 | sdev_show_function(field, "%d\n") \ | |
456 | \ | |
457 | static ssize_t \ | |
ee959b00 TJ |
458 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
459 | const char *buf, size_t count) \ | |
1da177e4 LT |
460 | { \ |
461 | int ret; \ | |
462 | struct scsi_device *sdev; \ | |
463 | ret = scsi_sdev_check_buf_bit(buf); \ | |
464 | if (ret >= 0) { \ | |
465 | sdev = to_scsi_device(dev); \ | |
466 | sdev->field = ret; \ | |
467 | ret = count; \ | |
468 | } \ | |
469 | return ret; \ | |
470 | } \ | |
471 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
472 | ||
473 | /* | |
474 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
475 | * else return -EINVAL. | |
476 | */ | |
477 | static int scsi_sdev_check_buf_bit(const char *buf) | |
478 | { | |
479 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
480 | if (buf[0] == '1') | |
481 | return 1; | |
482 | else if (buf[0] == '0') | |
483 | return 0; | |
484 | else | |
485 | return -EINVAL; | |
486 | } else | |
487 | return -EINVAL; | |
488 | } | |
489 | #endif | |
490 | /* | |
491 | * Create the actual show/store functions and data structures. | |
492 | */ | |
493 | sdev_rd_attr (device_blocked, "%d\n"); | |
494 | sdev_rd_attr (queue_depth, "%d\n"); | |
495 | sdev_rd_attr (type, "%d\n"); | |
496 | sdev_rd_attr (scsi_level, "%d\n"); | |
497 | sdev_rd_attr (vendor, "%.8s\n"); | |
498 | sdev_rd_attr (model, "%.16s\n"); | |
499 | sdev_rd_attr (rev, "%.4s\n"); | |
500 | ||
242f9dcb JA |
501 | /* |
502 | * TODO: can we make these symlinks to the block layer ones? | |
503 | */ | |
1da177e4 | 504 | static ssize_t |
10523b3b | 505 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
506 | { |
507 | struct scsi_device *sdev; | |
508 | sdev = to_scsi_device(dev); | |
242f9dcb | 509 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
510 | } |
511 | ||
512 | static ssize_t | |
ee959b00 TJ |
513 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
514 | const char *buf, size_t count) | |
1da177e4 LT |
515 | { |
516 | struct scsi_device *sdev; | |
517 | int timeout; | |
518 | sdev = to_scsi_device(dev); | |
519 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 520 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
521 | return count; |
522 | } | |
523 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
524 | ||
525 | static ssize_t | |
ee959b00 TJ |
526 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
527 | const char *buf, size_t count) | |
1da177e4 LT |
528 | { |
529 | scsi_rescan_device(dev); | |
530 | return count; | |
531 | } | |
532 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
533 | ||
d9a9cdfb AS |
534 | static void sdev_store_delete_callback(struct device *dev) |
535 | { | |
536 | scsi_remove_device(to_scsi_device(dev)); | |
537 | } | |
538 | ||
ee959b00 TJ |
539 | static ssize_t |
540 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
541 | const char *buf, size_t count) | |
1da177e4 | 542 | { |
d9a9cdfb AS |
543 | int rc; |
544 | ||
545 | /* An attribute cannot be unregistered by one of its own methods, | |
546 | * so we have to use this roundabout approach. | |
547 | */ | |
548 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
549 | if (rc) | |
550 | count = rc; | |
1da177e4 LT |
551 | return count; |
552 | }; | |
553 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
554 | ||
555 | static ssize_t | |
ee959b00 TJ |
556 | store_state_field(struct device *dev, struct device_attribute *attr, |
557 | const char *buf, size_t count) | |
1da177e4 LT |
558 | { |
559 | int i; | |
560 | struct scsi_device *sdev = to_scsi_device(dev); | |
561 | enum scsi_device_state state = 0; | |
562 | ||
6391a113 | 563 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
564 | const int len = strlen(sdev_states[i].name); |
565 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
566 | buf[len] == '\n') { | |
567 | state = sdev_states[i].value; | |
568 | break; | |
569 | } | |
570 | } | |
571 | if (!state) | |
572 | return -EINVAL; | |
573 | ||
574 | if (scsi_device_set_state(sdev, state)) | |
575 | return -EINVAL; | |
576 | return count; | |
577 | } | |
578 | ||
579 | static ssize_t | |
10523b3b | 580 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
581 | { |
582 | struct scsi_device *sdev = to_scsi_device(dev); | |
583 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
584 | ||
585 | if (!name) | |
586 | return -EINVAL; | |
587 | ||
588 | return snprintf(buf, 20, "%s\n", name); | |
589 | } | |
590 | ||
591 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
592 | ||
593 | static ssize_t | |
ee959b00 TJ |
594 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
595 | char *buf) | |
1da177e4 LT |
596 | { |
597 | struct scsi_device *sdev = to_scsi_device(dev); | |
598 | const char *name = "none"; | |
599 | ||
600 | if (sdev->ordered_tags) | |
601 | name = "ordered"; | |
602 | else if (sdev->simple_tags) | |
603 | name = "simple"; | |
604 | ||
605 | return snprintf(buf, 20, "%s\n", name); | |
606 | } | |
607 | ||
608 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
609 | ||
610 | static ssize_t | |
ee959b00 | 611 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
612 | { |
613 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
614 | } | |
615 | ||
616 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
617 | ||
618 | #define show_sdev_iostat(field) \ | |
619 | static ssize_t \ | |
ee959b00 TJ |
620 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
621 | char *buf) \ | |
1da177e4 LT |
622 | { \ |
623 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
624 | unsigned long long count = atomic_read(&sdev->field); \ | |
625 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
626 | } \ | |
627 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
628 | ||
629 | show_sdev_iostat(iorequest_cnt); | |
630 | show_sdev_iostat(iodone_cnt); | |
631 | show_sdev_iostat(ioerr_cnt); | |
632 | ||
d7b8bcb0 MT |
633 | static ssize_t |
634 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
635 | { | |
636 | struct scsi_device *sdev; | |
637 | sdev = to_scsi_device(dev); | |
638 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
639 | } | |
640 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 641 | |
a341cd0f JG |
642 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
643 | static ssize_t \ | |
644 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 645 | char *buf) \ |
a341cd0f JG |
646 | { \ |
647 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
648 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
649 | return snprintf(buf, 20, "%d\n", val); \ | |
650 | } | |
651 | ||
652 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
653 | static ssize_t \ | |
ee959b00 | 654 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
655 | const char *buf, size_t count) \ |
656 | { \ | |
657 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
658 | int val = simple_strtoul(buf, NULL, 0); \ | |
659 | if (val == 0) \ | |
660 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
661 | else if (val == 1) \ | |
662 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
663 | else \ | |
664 | return -EINVAL; \ | |
665 | return count; \ | |
666 | } | |
667 | ||
668 | #define DECLARE_EVT(name, Cap_name) \ | |
669 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
670 | DECLARE_EVT_STORE(name, Cap_name) \ | |
671 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
672 | sdev_store_evt_##name); | |
673 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
674 | ||
675 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
676 | ||
1da177e4 | 677 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
678 | static struct attribute *scsi_sdev_attrs[] = { |
679 | &dev_attr_device_blocked.attr, | |
680 | &dev_attr_type.attr, | |
681 | &dev_attr_scsi_level.attr, | |
682 | &dev_attr_vendor.attr, | |
683 | &dev_attr_model.attr, | |
684 | &dev_attr_rev.attr, | |
685 | &dev_attr_rescan.attr, | |
686 | &dev_attr_delete.attr, | |
687 | &dev_attr_state.attr, | |
688 | &dev_attr_timeout.attr, | |
689 | &dev_attr_iocounterbits.attr, | |
690 | &dev_attr_iorequest_cnt.attr, | |
691 | &dev_attr_iodone_cnt.attr, | |
692 | &dev_attr_ioerr_cnt.attr, | |
693 | &dev_attr_modalias.attr, | |
a341cd0f | 694 | REF_EVT(media_change), |
bfd12944 KS |
695 | NULL |
696 | }; | |
697 | ||
698 | static struct attribute_group scsi_sdev_attr_group = { | |
699 | .attrs = scsi_sdev_attrs, | |
700 | }; | |
701 | ||
a4dbd674 | 702 | static const struct attribute_group *scsi_sdev_attr_groups[] = { |
bfd12944 | 703 | &scsi_sdev_attr_group, |
1da177e4 LT |
704 | NULL |
705 | }; | |
706 | ||
ee959b00 TJ |
707 | static ssize_t |
708 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
709 | const char *buf, size_t count) | |
1da177e4 LT |
710 | { |
711 | int depth, retval; | |
712 | struct scsi_device *sdev = to_scsi_device(dev); | |
713 | struct scsi_host_template *sht = sdev->host->hostt; | |
714 | ||
715 | if (!sht->change_queue_depth) | |
716 | return -EINVAL; | |
717 | ||
718 | depth = simple_strtoul(buf, NULL, 0); | |
719 | ||
720 | if (depth < 1) | |
721 | return -EINVAL; | |
722 | ||
e881a172 MC |
723 | retval = sht->change_queue_depth(sdev, depth, |
724 | SCSI_QDEPTH_DEFAULT); | |
1da177e4 LT |
725 | if (retval < 0) |
726 | return retval; | |
727 | ||
4a84067d VD |
728 | sdev->max_queue_depth = sdev->queue_depth; |
729 | ||
1da177e4 LT |
730 | return count; |
731 | } | |
732 | ||
733 | static struct device_attribute sdev_attr_queue_depth_rw = | |
734 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
735 | sdev_store_queue_depth_rw); | |
736 | ||
4a84067d VD |
737 | static ssize_t |
738 | sdev_show_queue_ramp_up_period(struct device *dev, | |
739 | struct device_attribute *attr, | |
740 | char *buf) | |
741 | { | |
742 | struct scsi_device *sdev; | |
743 | sdev = to_scsi_device(dev); | |
744 | return snprintf(buf, 20, "%u\n", | |
745 | jiffies_to_msecs(sdev->queue_ramp_up_period)); | |
746 | } | |
747 | ||
748 | static ssize_t | |
749 | sdev_store_queue_ramp_up_period(struct device *dev, | |
750 | struct device_attribute *attr, | |
751 | const char *buf, size_t count) | |
752 | { | |
753 | struct scsi_device *sdev = to_scsi_device(dev); | |
754 | unsigned long period; | |
755 | ||
756 | if (strict_strtoul(buf, 10, &period)) | |
757 | return -EINVAL; | |
758 | ||
759 | sdev->queue_ramp_up_period = msecs_to_jiffies(period); | |
760 | return period; | |
761 | } | |
762 | ||
763 | static struct device_attribute sdev_attr_queue_ramp_up_period = | |
764 | __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, | |
765 | sdev_show_queue_ramp_up_period, | |
766 | sdev_store_queue_ramp_up_period); | |
767 | ||
ee959b00 TJ |
768 | static ssize_t |
769 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
770 | const char *buf, size_t count) | |
1da177e4 LT |
771 | { |
772 | struct scsi_device *sdev = to_scsi_device(dev); | |
773 | struct scsi_host_template *sht = sdev->host->hostt; | |
774 | int tag_type = 0, retval; | |
775 | int prev_tag_type = scsi_get_tag_type(sdev); | |
776 | ||
777 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
778 | return -EINVAL; | |
779 | ||
780 | if (strncmp(buf, "ordered", 7) == 0) | |
781 | tag_type = MSG_ORDERED_TAG; | |
782 | else if (strncmp(buf, "simple", 6) == 0) | |
783 | tag_type = MSG_SIMPLE_TAG; | |
784 | else if (strncmp(buf, "none", 4) != 0) | |
785 | return -EINVAL; | |
786 | ||
787 | if (tag_type == prev_tag_type) | |
788 | return count; | |
789 | ||
790 | retval = sht->change_queue_type(sdev, tag_type); | |
791 | if (retval < 0) | |
792 | return retval; | |
793 | ||
794 | return count; | |
795 | } | |
796 | ||
643eb2d9 JB |
797 | static int scsi_target_add(struct scsi_target *starget) |
798 | { | |
799 | int error; | |
800 | ||
801 | if (starget->state != STARGET_CREATED) | |
802 | return 0; | |
803 | ||
804 | error = device_add(&starget->dev); | |
805 | if (error) { | |
806 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
643eb2d9 JB |
807 | return error; |
808 | } | |
809 | transport_add_device(&starget->dev); | |
810 | starget->state = STARGET_RUNNING; | |
811 | ||
bc4f2401 AS |
812 | pm_runtime_set_active(&starget->dev); |
813 | pm_runtime_enable(&starget->dev); | |
814 | device_enable_async_suspend(&starget->dev); | |
815 | ||
643eb2d9 JB |
816 | return 0; |
817 | } | |
818 | ||
1da177e4 LT |
819 | static struct device_attribute sdev_attr_queue_type_rw = |
820 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
821 | sdev_store_queue_type_rw); | |
822 | ||
1da177e4 LT |
823 | /** |
824 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
825 | * @sdev: scsi_device to add | |
826 | * | |
827 | * Return value: | |
828 | * 0 on Success / non-zero on Failure | |
829 | **/ | |
830 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
831 | { | |
832 | int error, i; | |
80ed71ce | 833 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 834 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 | 835 | |
ee37e09d AS |
836 | error = scsi_device_set_state(sdev, SDEV_RUNNING); |
837 | if (error) | |
1da177e4 LT |
838 | return error; |
839 | ||
643eb2d9 JB |
840 | error = scsi_target_add(starget); |
841 | if (error) | |
842 | return error; | |
843 | ||
844 | transport_configure_device(&starget->dev); | |
bc4f2401 | 845 | |
4cb077d9 | 846 | device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f2401 AS |
847 | scsi_autopm_get_target(starget); |
848 | pm_runtime_set_active(&sdev->sdev_gendev); | |
849 | pm_runtime_forbid(&sdev->sdev_gendev); | |
850 | pm_runtime_enable(&sdev->sdev_gendev); | |
851 | scsi_autopm_put_target(starget); | |
852 | ||
853 | /* The following call will keep sdev active indefinitely, until | |
854 | * its driver does a corresponding scsi_autopm_pm_device(). Only | |
855 | * drivers supporting autosuspend will do this. | |
856 | */ | |
857 | scsi_autopm_get_device(sdev); | |
858 | ||
1da177e4 LT |
859 | error = device_add(&sdev->sdev_gendev); |
860 | if (error) { | |
73d8c34f AS |
861 | sdev_printk(KERN_INFO, sdev, |
862 | "failed to add device: %d\n", error); | |
ee37e09d | 863 | return error; |
1da177e4 | 864 | } |
4cb077d9 | 865 | device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00 | 866 | error = device_add(&sdev->sdev_dev); |
1da177e4 | 867 | if (error) { |
73d8c34f AS |
868 | sdev_printk(KERN_INFO, sdev, |
869 | "failed to add class device: %d\n", error); | |
860dc736 | 870 | device_del(&sdev->sdev_gendev); |
ee37e09d | 871 | return error; |
1da177e4 | 872 | } |
860dc736 JB |
873 | transport_add_device(&sdev->sdev_gendev); |
874 | sdev->is_visible = 1; | |
1da177e4 | 875 | |
bfd12944 | 876 | /* create queue files, which may be writable, depending on the host */ |
4a84067d VD |
877 | if (sdev->host->hostt->change_queue_depth) { |
878 | error = device_create_file(&sdev->sdev_gendev, | |
879 | &sdev_attr_queue_depth_rw); | |
880 | error = device_create_file(&sdev->sdev_gendev, | |
881 | &sdev_attr_queue_ramp_up_period); | |
882 | } | |
bfd12944 KS |
883 | else |
884 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
860dc736 | 885 | if (error) |
ee37e09d | 886 | return error; |
860dc736 | 887 | |
bfd12944 KS |
888 | if (sdev->host->hostt->change_queue_type) |
889 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
890 | else | |
891 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
860dc736 | 892 | if (error) |
ee37e09d | 893 | return error; |
bfd12944 | 894 | |
97f46ae4 | 895 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
896 | |
897 | if (error) | |
860dc736 JB |
898 | /* we're treating error on bsg register as non-fatal, |
899 | * so pretend nothing went wrong */ | |
80ed71ce JB |
900 | sdev_printk(KERN_INFO, sdev, |
901 | "Failed to register bsg queue, errno=%d\n", error); | |
902 | ||
bfd12944 | 903 | /* add additional host specific attributes */ |
1da177e4 LT |
904 | if (sdev->host->hostt->sdev_attrs) { |
905 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 906 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 | 907 | sdev->host->hostt->sdev_attrs[i]); |
860dc736 | 908 | if (error) |
ee37e09d | 909 | return error; |
1da177e4 LT |
910 | } |
911 | } | |
1da177e4 | 912 | |
1da177e4 LT |
913 | return error; |
914 | } | |
915 | ||
903f4fed | 916 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 917 | { |
df133c21 JB |
918 | struct device *dev = &sdev->sdev_gendev; |
919 | ||
860dc736 JB |
920 | if (sdev->is_visible) { |
921 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) | |
922 | return; | |
1da177e4 | 923 | |
860dc736 JB |
924 | bsg_unregister_queue(sdev->request_queue); |
925 | device_unregister(&sdev->sdev_dev); | |
926 | transport_remove_device(dev); | |
927 | device_del(dev); | |
928 | } else | |
929 | put_device(&sdev->sdev_dev); | |
1da177e4 LT |
930 | scsi_device_set_state(sdev, SDEV_DEL); |
931 | if (sdev->host->hostt->slave_destroy) | |
932 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 | 933 | transport_destroy_device(dev); |
86cbfb56 JB |
934 | |
935 | /* cause the request function to reject all I/O requests */ | |
936 | sdev->request_queue->queuedata = NULL; | |
937 | ||
938 | /* Freeing the queue signals to block that we're done */ | |
939 | scsi_free_queue(sdev->request_queue); | |
df133c21 | 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 | 968 | sdev->id != starget->id || |
546ae796 | 969 | scsi_device_get(sdev)) |
1da177e4 LT |
970 | continue; |
971 | spin_unlock_irqrestore(shost->host_lock, flags); | |
972 | scsi_remove_device(sdev); | |
546ae796 | 973 | scsi_device_put(sdev); |
1da177e4 | 974 | spin_lock_irqsave(shost->host_lock, flags); |
a64358db | 975 | goto restart; |
1da177e4 LT |
976 | } |
977 | spin_unlock_irqrestore(shost->host_lock, flags); | |
978 | scsi_target_reap(starget); | |
979 | } | |
980 | ||
20b1e674 PM |
981 | static int __remove_child (struct device * dev, void * data) |
982 | { | |
983 | if (scsi_is_target_device(dev)) | |
984 | __scsi_remove_target(to_scsi_target(dev)); | |
985 | return 0; | |
986 | } | |
987 | ||
1da177e4 LT |
988 | /** |
989 | * scsi_remove_target - try to remove a target and all its devices | |
990 | * @dev: generic starget or parent of generic stargets to be removed | |
991 | * | |
992 | * Note: This is slightly racy. It is possible that if the user | |
993 | * requests the addition of another device then the target won't be | |
994 | * removed. | |
995 | */ | |
996 | void scsi_remove_target(struct device *dev) | |
997 | { | |
1da177e4 LT |
998 | if (scsi_is_target_device(dev)) { |
999 | __scsi_remove_target(to_scsi_target(dev)); | |
1000 | return; | |
1001 | } | |
1002 | ||
41511704 | 1003 | get_device(dev); |
20b1e674 | 1004 | device_for_each_child(dev, NULL, __remove_child); |
41511704 | 1005 | put_device(dev); |
1da177e4 LT |
1006 | } |
1007 | EXPORT_SYMBOL(scsi_remove_target); | |
1008 | ||
1009 | int scsi_register_driver(struct device_driver *drv) | |
1010 | { | |
1011 | drv->bus = &scsi_bus_type; | |
1012 | ||
1013 | return driver_register(drv); | |
1014 | } | |
1015 | EXPORT_SYMBOL(scsi_register_driver); | |
1016 | ||
1017 | int scsi_register_interface(struct class_interface *intf) | |
1018 | { | |
1019 | intf->class = &sdev_class; | |
1020 | ||
1021 | return class_interface_register(intf); | |
1022 | } | |
1023 | EXPORT_SYMBOL(scsi_register_interface); | |
1024 | ||
1da177e4 LT |
1025 | /** |
1026 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1027 | * @shost: scsi host struct to add to subsystem | |
1da177e4 LT |
1028 | **/ |
1029 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1030 | { | |
1031 | int error, i; | |
1032 | ||
f7120a4f | 1033 | /* add host specific attributes */ |
1da177e4 LT |
1034 | if (shost->hostt->shost_attrs) { |
1035 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1036 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1037 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1038 | if (error) |
1039 | return error; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1044 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1045 | return 0; |
1046 | } | |
1047 | ||
bfd12944 KS |
1048 | static struct device_type scsi_dev_type = { |
1049 | .name = "scsi_device", | |
1050 | .release = scsi_device_dev_release, | |
1051 | .groups = scsi_sdev_attr_groups, | |
1052 | }; | |
1053 | ||
1da177e4 LT |
1054 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1055 | { | |
1056 | unsigned long flags; | |
1057 | struct Scsi_Host *shost = sdev->host; | |
1058 | struct scsi_target *starget = sdev->sdev_target; | |
1059 | ||
1060 | device_initialize(&sdev->sdev_gendev); | |
1061 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1062 | sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55 KS |
1063 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
1064 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
1065 | ||
ee959b00 | 1066 | device_initialize(&sdev->sdev_dev); |
37e6ba00 | 1067 | sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00 | 1068 | sdev->sdev_dev.class = &sdev_class; |
71610f55 KS |
1069 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
1070 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1071 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1072 | transport_setup_device(&sdev->sdev_gendev); |
1073 | spin_lock_irqsave(shost->host_lock, flags); | |
1074 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1075 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1076 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1077 | } | |
1078 | ||
1079 | int scsi_is_sdev_device(const struct device *dev) | |
1080 | { | |
13ba9bcb | 1081 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1082 | } |
1083 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1084 | ||
1085 | /* A blank transport template that is used in drivers that don't | |
1086 | * yet implement Transport Attributes */ | |
1087 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |