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 | |
29443691 VC |
249 | static int check_reset_type(char *str) |
250 | { | |
251 | if (strncmp(str, "adapter", 10) == 0) | |
252 | return SCSI_ADAPTER_RESET; | |
253 | else if (strncmp(str, "firmware", 10) == 0) | |
254 | return SCSI_FIRMWARE_RESET; | |
255 | else | |
256 | return 0; | |
257 | } | |
258 | ||
259 | static ssize_t | |
260 | store_host_reset(struct device *dev, struct device_attribute *attr, | |
261 | const char *buf, size_t count) | |
262 | { | |
263 | struct Scsi_Host *shost = class_to_shost(dev); | |
264 | struct scsi_host_template *sht = shost->hostt; | |
265 | int ret = -EINVAL; | |
266 | char str[10]; | |
267 | int type; | |
268 | ||
269 | sscanf(buf, "%s", str); | |
270 | type = check_reset_type(str); | |
271 | ||
272 | if (!type) | |
273 | goto exit_store_host_reset; | |
274 | ||
275 | if (sht->host_reset) | |
276 | ret = sht->host_reset(shost, type); | |
277 | ||
278 | exit_store_host_reset: | |
279 | if (ret == 0) | |
280 | ret = count; | |
281 | return ret; | |
282 | } | |
283 | ||
284 | static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset); | |
285 | ||
1da177e4 LT |
286 | shost_rd_attr(unique_id, "%u\n"); |
287 | shost_rd_attr(host_busy, "%hu\n"); | |
288 | shost_rd_attr(cmd_per_lun, "%hd\n"); | |
ed632da8 | 289 | shost_rd_attr(can_queue, "%hd\n"); |
1da177e4 | 290 | shost_rd_attr(sg_tablesize, "%hu\n"); |
13f05c8d | 291 | shost_rd_attr(sg_prot_tablesize, "%hu\n"); |
1da177e4 | 292 | shost_rd_attr(unchecked_isa_dma, "%d\n"); |
4469f987 MP |
293 | shost_rd_attr(prot_capabilities, "%u\n"); |
294 | shost_rd_attr(prot_guard_type, "%hd\n"); | |
1da177e4 LT |
295 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
296 | ||
f7120a4f HR |
297 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
298 | &dev_attr_unique_id.attr, | |
299 | &dev_attr_host_busy.attr, | |
300 | &dev_attr_cmd_per_lun.attr, | |
301 | &dev_attr_can_queue.attr, | |
302 | &dev_attr_sg_tablesize.attr, | |
13f05c8d | 303 | &dev_attr_sg_prot_tablesize.attr, |
f7120a4f HR |
304 | &dev_attr_unchecked_isa_dma.attr, |
305 | &dev_attr_proc_name.attr, | |
306 | &dev_attr_scan.attr, | |
307 | &dev_attr_hstate.attr, | |
308 | &dev_attr_supported_mode.attr, | |
309 | &dev_attr_active_mode.attr, | |
4469f987 MP |
310 | &dev_attr_prot_capabilities.attr, |
311 | &dev_attr_prot_guard_type.attr, | |
29443691 | 312 | &dev_attr_host_reset.attr, |
f7120a4f HR |
313 | NULL |
314 | }; | |
315 | ||
316 | struct attribute_group scsi_shost_attr_group = { | |
317 | .attrs = scsi_sysfs_shost_attrs, | |
318 | }; | |
319 | ||
a4dbd674 | 320 | const struct attribute_group *scsi_sysfs_shost_attr_groups[] = { |
f7120a4f | 321 | &scsi_shost_attr_group, |
1da177e4 LT |
322 | NULL |
323 | }; | |
324 | ||
ee959b00 | 325 | static void scsi_device_cls_release(struct device *class_dev) |
1da177e4 LT |
326 | { |
327 | struct scsi_device *sdev; | |
328 | ||
329 | sdev = class_to_sdev(class_dev); | |
330 | put_device(&sdev->sdev_gendev); | |
331 | } | |
332 | ||
65f27f38 | 333 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
1da177e4 LT |
334 | { |
335 | struct scsi_device *sdev; | |
336 | struct device *parent; | |
337 | struct scsi_target *starget; | |
a341cd0f | 338 | struct list_head *this, *tmp; |
1da177e4 LT |
339 | unsigned long flags; |
340 | ||
65f27f38 DH |
341 | sdev = container_of(work, struct scsi_device, ew.work); |
342 | ||
343 | parent = sdev->sdev_gendev.parent; | |
1da177e4 LT |
344 | starget = to_scsi_target(parent); |
345 | ||
346 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
347 | starget->reap_ref++; | |
348 | list_del(&sdev->siblings); | |
349 | list_del(&sdev->same_target_siblings); | |
350 | list_del(&sdev->starved_entry); | |
351 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
352 | ||
a341cd0f JG |
353 | cancel_work_sync(&sdev->event_work); |
354 | ||
355 | list_for_each_safe(this, tmp, &sdev->event_list) { | |
356 | struct scsi_event *evt; | |
357 | ||
358 | evt = list_entry(this, struct scsi_event, node); | |
359 | list_del(&evt->node); | |
360 | kfree(evt); | |
361 | } | |
362 | ||
e73e079b | 363 | blk_put_queue(sdev->request_queue); |
86cbfb56 JB |
364 | /* NULL queue means the device can't be used */ |
365 | sdev->request_queue = NULL; | |
1da177e4 LT |
366 | |
367 | scsi_target_reap(scsi_target(sdev)); | |
368 | ||
369 | kfree(sdev->inquiry); | |
370 | kfree(sdev); | |
371 | ||
372 | if (parent) | |
373 | put_device(parent); | |
374 | } | |
375 | ||
65110b21 JB |
376 | static void scsi_device_dev_release(struct device *dev) |
377 | { | |
ffedb452 | 378 | struct scsi_device *sdp = to_scsi_device(dev); |
65f27f38 | 379 | execute_in_process_context(scsi_device_dev_release_usercontext, |
ffedb452 | 380 | &sdp->ew); |
65110b21 JB |
381 | } |
382 | ||
52c1da39 | 383 | static struct class sdev_class = { |
1da177e4 | 384 | .name = "scsi_device", |
ee959b00 | 385 | .dev_release = scsi_device_cls_release, |
1da177e4 LT |
386 | }; |
387 | ||
388 | /* all probing is done in the individual ->probe routines */ | |
389 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) | |
390 | { | |
b0ed4336 HR |
391 | struct scsi_device *sdp; |
392 | ||
393 | if (dev->type != &scsi_dev_type) | |
394 | return 0; | |
395 | ||
396 | sdp = to_scsi_device(dev); | |
1da177e4 LT |
397 | if (sdp->no_uld_attach) |
398 | return 0; | |
399 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; | |
400 | } | |
401 | ||
7eff2e7a | 402 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0 | 403 | { |
1f42ea7b JB |
404 | struct scsi_device *sdev; |
405 | ||
406 | if (dev->type != &scsi_dev_type) | |
407 | return 0; | |
408 | ||
409 | sdev = to_scsi_device(dev); | |
d7b8bcb0 | 410 | |
7eff2e7a | 411 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0 MT |
412 | return 0; |
413 | } | |
414 | ||
1da177e4 LT |
415 | struct bus_type scsi_bus_type = { |
416 | .name = "scsi", | |
417 | .match = scsi_bus_match, | |
d7b8bcb0 | 418 | .uevent = scsi_bus_uevent, |
aa338601 | 419 | #ifdef CONFIG_PM |
db5bd1e0 | 420 | .pm = &scsi_bus_pm_ops, |
e6da54d8 | 421 | #endif |
1da177e4 | 422 | }; |
a6a8d9f8 | 423 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4 LT |
424 | |
425 | int scsi_sysfs_register(void) | |
426 | { | |
427 | int error; | |
428 | ||
429 | error = bus_register(&scsi_bus_type); | |
430 | if (!error) { | |
431 | error = class_register(&sdev_class); | |
432 | if (error) | |
433 | bus_unregister(&scsi_bus_type); | |
434 | } | |
435 | ||
436 | return error; | |
437 | } | |
438 | ||
439 | void scsi_sysfs_unregister(void) | |
440 | { | |
441 | class_unregister(&sdev_class); | |
442 | bus_unregister(&scsi_bus_type); | |
443 | } | |
444 | ||
445 | /* | |
446 | * sdev_show_function: macro to create an attr function that can be used to | |
447 | * show a non-bit field. | |
448 | */ | |
449 | #define sdev_show_function(field, format_string) \ | |
450 | static ssize_t \ | |
ee959b00 TJ |
451 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
452 | char *buf) \ | |
1da177e4 LT |
453 | { \ |
454 | struct scsi_device *sdev; \ | |
455 | sdev = to_scsi_device(dev); \ | |
456 | return snprintf (buf, 20, format_string, sdev->field); \ | |
457 | } \ | |
458 | ||
459 | /* | |
460 | * sdev_rd_attr: macro to create a function and attribute variable for a | |
461 | * read only field. | |
462 | */ | |
463 | #define sdev_rd_attr(field, format_string) \ | |
464 | sdev_show_function(field, format_string) \ | |
465 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); | |
466 | ||
467 | ||
468 | /* | |
160e7f67 | 469 | * sdev_rw_attr: create a function and attribute variable for a |
1da177e4 LT |
470 | * read/write field. |
471 | */ | |
472 | #define sdev_rw_attr(field, format_string) \ | |
473 | sdev_show_function(field, format_string) \ | |
474 | \ | |
475 | static ssize_t \ | |
ee959b00 TJ |
476 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
477 | const char *buf, size_t count) \ | |
1da177e4 LT |
478 | { \ |
479 | struct scsi_device *sdev; \ | |
480 | sdev = to_scsi_device(dev); \ | |
160e7f67 | 481 | sscanf (buf, format_string, &sdev->field); \ |
1da177e4 LT |
482 | return count; \ |
483 | } \ | |
484 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
485 | ||
486 | /* Currently we don't export bit fields, but we might in future, | |
487 | * so leave this code in */ | |
488 | #if 0 | |
489 | /* | |
490 | * sdev_rd_attr: create a function and attribute variable for a | |
491 | * read/write bit field. | |
492 | */ | |
493 | #define sdev_rw_attr_bit(field) \ | |
494 | sdev_show_function(field, "%d\n") \ | |
495 | \ | |
496 | static ssize_t \ | |
ee959b00 TJ |
497 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
498 | const char *buf, size_t count) \ | |
1da177e4 LT |
499 | { \ |
500 | int ret; \ | |
501 | struct scsi_device *sdev; \ | |
502 | ret = scsi_sdev_check_buf_bit(buf); \ | |
503 | if (ret >= 0) { \ | |
504 | sdev = to_scsi_device(dev); \ | |
505 | sdev->field = ret; \ | |
506 | ret = count; \ | |
507 | } \ | |
508 | return ret; \ | |
509 | } \ | |
510 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); | |
511 | ||
512 | /* | |
513 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", | |
514 | * else return -EINVAL. | |
515 | */ | |
516 | static int scsi_sdev_check_buf_bit(const char *buf) | |
517 | { | |
518 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { | |
519 | if (buf[0] == '1') | |
520 | return 1; | |
521 | else if (buf[0] == '0') | |
522 | return 0; | |
523 | else | |
524 | return -EINVAL; | |
525 | } else | |
526 | return -EINVAL; | |
527 | } | |
528 | #endif | |
529 | /* | |
530 | * Create the actual show/store functions and data structures. | |
531 | */ | |
532 | sdev_rd_attr (device_blocked, "%d\n"); | |
533 | sdev_rd_attr (queue_depth, "%d\n"); | |
534 | sdev_rd_attr (type, "%d\n"); | |
535 | sdev_rd_attr (scsi_level, "%d\n"); | |
536 | sdev_rd_attr (vendor, "%.8s\n"); | |
537 | sdev_rd_attr (model, "%.16s\n"); | |
538 | sdev_rd_attr (rev, "%.4s\n"); | |
539 | ||
242f9dcb JA |
540 | /* |
541 | * TODO: can we make these symlinks to the block layer ones? | |
542 | */ | |
1da177e4 | 543 | static ssize_t |
10523b3b | 544 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
545 | { |
546 | struct scsi_device *sdev; | |
547 | sdev = to_scsi_device(dev); | |
242f9dcb | 548 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
1da177e4 LT |
549 | } |
550 | ||
551 | static ssize_t | |
ee959b00 TJ |
552 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
553 | const char *buf, size_t count) | |
1da177e4 LT |
554 | { |
555 | struct scsi_device *sdev; | |
556 | int timeout; | |
557 | sdev = to_scsi_device(dev); | |
558 | sscanf (buf, "%d\n", &timeout); | |
242f9dcb | 559 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4 LT |
560 | return count; |
561 | } | |
562 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); | |
563 | ||
564 | static ssize_t | |
ee959b00 TJ |
565 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
566 | const char *buf, size_t count) | |
1da177e4 LT |
567 | { |
568 | scsi_rescan_device(dev); | |
569 | return count; | |
570 | } | |
571 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); | |
572 | ||
d9a9cdfb AS |
573 | static void sdev_store_delete_callback(struct device *dev) |
574 | { | |
575 | scsi_remove_device(to_scsi_device(dev)); | |
576 | } | |
577 | ||
ee959b00 TJ |
578 | static ssize_t |
579 | sdev_store_delete(struct device *dev, struct device_attribute *attr, | |
580 | const char *buf, size_t count) | |
1da177e4 | 581 | { |
d9a9cdfb AS |
582 | int rc; |
583 | ||
584 | /* An attribute cannot be unregistered by one of its own methods, | |
585 | * so we have to use this roundabout approach. | |
586 | */ | |
587 | rc = device_schedule_callback(dev, sdev_store_delete_callback); | |
588 | if (rc) | |
589 | count = rc; | |
1da177e4 LT |
590 | return count; |
591 | }; | |
592 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); | |
593 | ||
594 | static ssize_t | |
ee959b00 TJ |
595 | store_state_field(struct device *dev, struct device_attribute *attr, |
596 | const char *buf, size_t count) | |
1da177e4 LT |
597 | { |
598 | int i; | |
599 | struct scsi_device *sdev = to_scsi_device(dev); | |
600 | enum scsi_device_state state = 0; | |
601 | ||
6391a113 | 602 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4 LT |
603 | const int len = strlen(sdev_states[i].name); |
604 | if (strncmp(sdev_states[i].name, buf, len) == 0 && | |
605 | buf[len] == '\n') { | |
606 | state = sdev_states[i].value; | |
607 | break; | |
608 | } | |
609 | } | |
610 | if (!state) | |
611 | return -EINVAL; | |
612 | ||
613 | if (scsi_device_set_state(sdev, state)) | |
614 | return -EINVAL; | |
615 | return count; | |
616 | } | |
617 | ||
618 | static ssize_t | |
10523b3b | 619 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
620 | { |
621 | struct scsi_device *sdev = to_scsi_device(dev); | |
622 | const char *name = scsi_device_state_name(sdev->sdev_state); | |
623 | ||
624 | if (!name) | |
625 | return -EINVAL; | |
626 | ||
627 | return snprintf(buf, 20, "%s\n", name); | |
628 | } | |
629 | ||
630 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); | |
631 | ||
632 | static ssize_t | |
ee959b00 TJ |
633 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
634 | char *buf) | |
1da177e4 LT |
635 | { |
636 | struct scsi_device *sdev = to_scsi_device(dev); | |
637 | const char *name = "none"; | |
638 | ||
639 | if (sdev->ordered_tags) | |
640 | name = "ordered"; | |
641 | else if (sdev->simple_tags) | |
642 | name = "simple"; | |
643 | ||
644 | return snprintf(buf, 20, "%s\n", name); | |
645 | } | |
646 | ||
647 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); | |
648 | ||
649 | static ssize_t | |
ee959b00 | 650 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
651 | { |
652 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); | |
653 | } | |
654 | ||
655 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); | |
656 | ||
657 | #define show_sdev_iostat(field) \ | |
658 | static ssize_t \ | |
ee959b00 TJ |
659 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
660 | char *buf) \ | |
1da177e4 LT |
661 | { \ |
662 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
663 | unsigned long long count = atomic_read(&sdev->field); \ | |
664 | return snprintf(buf, 20, "0x%llx\n", count); \ | |
665 | } \ | |
666 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) | |
667 | ||
668 | show_sdev_iostat(iorequest_cnt); | |
669 | show_sdev_iostat(iodone_cnt); | |
670 | show_sdev_iostat(ioerr_cnt); | |
671 | ||
d7b8bcb0 MT |
672 | static ssize_t |
673 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) | |
674 | { | |
675 | struct scsi_device *sdev; | |
676 | sdev = to_scsi_device(dev); | |
677 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); | |
678 | } | |
679 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); | |
1da177e4 | 680 | |
a341cd0f JG |
681 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
682 | static ssize_t \ | |
683 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ | |
ee959b00 | 684 | char *buf) \ |
a341cd0f JG |
685 | { \ |
686 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
687 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ | |
688 | return snprintf(buf, 20, "%d\n", val); \ | |
689 | } | |
690 | ||
691 | #define DECLARE_EVT_STORE(name, Cap_name) \ | |
692 | static ssize_t \ | |
ee959b00 | 693 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f JG |
694 | const char *buf, size_t count) \ |
695 | { \ | |
696 | struct scsi_device *sdev = to_scsi_device(dev); \ | |
697 | int val = simple_strtoul(buf, NULL, 0); \ | |
698 | if (val == 0) \ | |
699 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
700 | else if (val == 1) \ | |
701 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ | |
702 | else \ | |
703 | return -EINVAL; \ | |
704 | return count; \ | |
705 | } | |
706 | ||
707 | #define DECLARE_EVT(name, Cap_name) \ | |
708 | DECLARE_EVT_SHOW(name, Cap_name) \ | |
709 | DECLARE_EVT_STORE(name, Cap_name) \ | |
710 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ | |
711 | sdev_store_evt_##name); | |
712 | #define REF_EVT(name) &dev_attr_evt_##name.attr | |
713 | ||
714 | DECLARE_EVT(media_change, MEDIA_CHANGE) | |
715 | ||
1da177e4 | 716 | /* Default template for device attributes. May NOT be modified */ |
bfd12944 KS |
717 | static struct attribute *scsi_sdev_attrs[] = { |
718 | &dev_attr_device_blocked.attr, | |
719 | &dev_attr_type.attr, | |
720 | &dev_attr_scsi_level.attr, | |
721 | &dev_attr_vendor.attr, | |
722 | &dev_attr_model.attr, | |
723 | &dev_attr_rev.attr, | |
724 | &dev_attr_rescan.attr, | |
725 | &dev_attr_delete.attr, | |
726 | &dev_attr_state.attr, | |
727 | &dev_attr_timeout.attr, | |
728 | &dev_attr_iocounterbits.attr, | |
729 | &dev_attr_iorequest_cnt.attr, | |
730 | &dev_attr_iodone_cnt.attr, | |
731 | &dev_attr_ioerr_cnt.attr, | |
732 | &dev_attr_modalias.attr, | |
a341cd0f | 733 | REF_EVT(media_change), |
bfd12944 KS |
734 | NULL |
735 | }; | |
736 | ||
737 | static struct attribute_group scsi_sdev_attr_group = { | |
738 | .attrs = scsi_sdev_attrs, | |
739 | }; | |
740 | ||
a4dbd674 | 741 | static const struct attribute_group *scsi_sdev_attr_groups[] = { |
bfd12944 | 742 | &scsi_sdev_attr_group, |
1da177e4 LT |
743 | NULL |
744 | }; | |
745 | ||
ee959b00 TJ |
746 | static ssize_t |
747 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, | |
748 | const char *buf, size_t count) | |
1da177e4 LT |
749 | { |
750 | int depth, retval; | |
751 | struct scsi_device *sdev = to_scsi_device(dev); | |
752 | struct scsi_host_template *sht = sdev->host->hostt; | |
753 | ||
754 | if (!sht->change_queue_depth) | |
755 | return -EINVAL; | |
756 | ||
757 | depth = simple_strtoul(buf, NULL, 0); | |
758 | ||
759 | if (depth < 1) | |
760 | return -EINVAL; | |
761 | ||
e881a172 MC |
762 | retval = sht->change_queue_depth(sdev, depth, |
763 | SCSI_QDEPTH_DEFAULT); | |
1da177e4 LT |
764 | if (retval < 0) |
765 | return retval; | |
766 | ||
4a84067d VD |
767 | sdev->max_queue_depth = sdev->queue_depth; |
768 | ||
1da177e4 LT |
769 | return count; |
770 | } | |
771 | ||
772 | static struct device_attribute sdev_attr_queue_depth_rw = | |
773 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, | |
774 | sdev_store_queue_depth_rw); | |
775 | ||
4a84067d VD |
776 | static ssize_t |
777 | sdev_show_queue_ramp_up_period(struct device *dev, | |
778 | struct device_attribute *attr, | |
779 | char *buf) | |
780 | { | |
781 | struct scsi_device *sdev; | |
782 | sdev = to_scsi_device(dev); | |
783 | return snprintf(buf, 20, "%u\n", | |
784 | jiffies_to_msecs(sdev->queue_ramp_up_period)); | |
785 | } | |
786 | ||
787 | static ssize_t | |
788 | sdev_store_queue_ramp_up_period(struct device *dev, | |
789 | struct device_attribute *attr, | |
790 | const char *buf, size_t count) | |
791 | { | |
792 | struct scsi_device *sdev = to_scsi_device(dev); | |
793 | unsigned long period; | |
794 | ||
795 | if (strict_strtoul(buf, 10, &period)) | |
796 | return -EINVAL; | |
797 | ||
798 | sdev->queue_ramp_up_period = msecs_to_jiffies(period); | |
799 | return period; | |
800 | } | |
801 | ||
802 | static struct device_attribute sdev_attr_queue_ramp_up_period = | |
803 | __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, | |
804 | sdev_show_queue_ramp_up_period, | |
805 | sdev_store_queue_ramp_up_period); | |
806 | ||
ee959b00 TJ |
807 | static ssize_t |
808 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, | |
809 | const char *buf, size_t count) | |
1da177e4 LT |
810 | { |
811 | struct scsi_device *sdev = to_scsi_device(dev); | |
812 | struct scsi_host_template *sht = sdev->host->hostt; | |
813 | int tag_type = 0, retval; | |
814 | int prev_tag_type = scsi_get_tag_type(sdev); | |
815 | ||
816 | if (!sdev->tagged_supported || !sht->change_queue_type) | |
817 | return -EINVAL; | |
818 | ||
819 | if (strncmp(buf, "ordered", 7) == 0) | |
820 | tag_type = MSG_ORDERED_TAG; | |
821 | else if (strncmp(buf, "simple", 6) == 0) | |
822 | tag_type = MSG_SIMPLE_TAG; | |
823 | else if (strncmp(buf, "none", 4) != 0) | |
824 | return -EINVAL; | |
825 | ||
826 | if (tag_type == prev_tag_type) | |
827 | return count; | |
828 | ||
829 | retval = sht->change_queue_type(sdev, tag_type); | |
830 | if (retval < 0) | |
831 | return retval; | |
832 | ||
833 | return count; | |
834 | } | |
835 | ||
643eb2d9 JB |
836 | static int scsi_target_add(struct scsi_target *starget) |
837 | { | |
838 | int error; | |
839 | ||
840 | if (starget->state != STARGET_CREATED) | |
841 | return 0; | |
842 | ||
843 | error = device_add(&starget->dev); | |
844 | if (error) { | |
845 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); | |
643eb2d9 JB |
846 | return error; |
847 | } | |
848 | transport_add_device(&starget->dev); | |
849 | starget->state = STARGET_RUNNING; | |
850 | ||
bc4f2401 AS |
851 | pm_runtime_set_active(&starget->dev); |
852 | pm_runtime_enable(&starget->dev); | |
853 | device_enable_async_suspend(&starget->dev); | |
854 | ||
643eb2d9 JB |
855 | return 0; |
856 | } | |
857 | ||
1da177e4 LT |
858 | static struct device_attribute sdev_attr_queue_type_rw = |
859 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, | |
860 | sdev_store_queue_type_rw); | |
861 | ||
1da177e4 LT |
862 | /** |
863 | * scsi_sysfs_add_sdev - add scsi device to sysfs | |
864 | * @sdev: scsi_device to add | |
865 | * | |
866 | * Return value: | |
867 | * 0 on Success / non-zero on Failure | |
868 | **/ | |
869 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) | |
870 | { | |
871 | int error, i; | |
80ed71ce | 872 | struct request_queue *rq = sdev->request_queue; |
643eb2d9 | 873 | struct scsi_target *starget = sdev->sdev_target; |
1da177e4 | 874 | |
ee37e09d AS |
875 | error = scsi_device_set_state(sdev, SDEV_RUNNING); |
876 | if (error) | |
1da177e4 LT |
877 | return error; |
878 | ||
643eb2d9 JB |
879 | error = scsi_target_add(starget); |
880 | if (error) | |
881 | return error; | |
882 | ||
883 | transport_configure_device(&starget->dev); | |
bc4f2401 | 884 | |
4cb077d9 | 885 | device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f2401 AS |
886 | scsi_autopm_get_target(starget); |
887 | pm_runtime_set_active(&sdev->sdev_gendev); | |
888 | pm_runtime_forbid(&sdev->sdev_gendev); | |
889 | pm_runtime_enable(&sdev->sdev_gendev); | |
890 | scsi_autopm_put_target(starget); | |
891 | ||
892 | /* The following call will keep sdev active indefinitely, until | |
893 | * its driver does a corresponding scsi_autopm_pm_device(). Only | |
894 | * drivers supporting autosuspend will do this. | |
895 | */ | |
896 | scsi_autopm_get_device(sdev); | |
897 | ||
1da177e4 LT |
898 | error = device_add(&sdev->sdev_gendev); |
899 | if (error) { | |
73d8c34f AS |
900 | sdev_printk(KERN_INFO, sdev, |
901 | "failed to add device: %d\n", error); | |
ee37e09d | 902 | return error; |
1da177e4 | 903 | } |
4cb077d9 | 904 | device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00 | 905 | error = device_add(&sdev->sdev_dev); |
1da177e4 | 906 | if (error) { |
73d8c34f AS |
907 | sdev_printk(KERN_INFO, sdev, |
908 | "failed to add class device: %d\n", error); | |
860dc736 | 909 | device_del(&sdev->sdev_gendev); |
ee37e09d | 910 | return error; |
1da177e4 | 911 | } |
860dc736 JB |
912 | transport_add_device(&sdev->sdev_gendev); |
913 | sdev->is_visible = 1; | |
1da177e4 | 914 | |
bfd12944 | 915 | /* create queue files, which may be writable, depending on the host */ |
4a84067d VD |
916 | if (sdev->host->hostt->change_queue_depth) { |
917 | error = device_create_file(&sdev->sdev_gendev, | |
918 | &sdev_attr_queue_depth_rw); | |
919 | error = device_create_file(&sdev->sdev_gendev, | |
920 | &sdev_attr_queue_ramp_up_period); | |
921 | } | |
bfd12944 KS |
922 | else |
923 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); | |
860dc736 | 924 | if (error) |
ee37e09d | 925 | return error; |
860dc736 | 926 | |
bfd12944 KS |
927 | if (sdev->host->hostt->change_queue_type) |
928 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); | |
929 | else | |
930 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); | |
860dc736 | 931 | if (error) |
ee37e09d | 932 | return error; |
bfd12944 | 933 | |
97f46ae4 | 934 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce JB |
935 | |
936 | if (error) | |
860dc736 JB |
937 | /* we're treating error on bsg register as non-fatal, |
938 | * so pretend nothing went wrong */ | |
80ed71ce JB |
939 | sdev_printk(KERN_INFO, sdev, |
940 | "Failed to register bsg queue, errno=%d\n", error); | |
941 | ||
bfd12944 | 942 | /* add additional host specific attributes */ |
1da177e4 LT |
943 | if (sdev->host->hostt->sdev_attrs) { |
944 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { | |
bfd12944 | 945 | error = device_create_file(&sdev->sdev_gendev, |
1da177e4 | 946 | sdev->host->hostt->sdev_attrs[i]); |
860dc736 | 947 | if (error) |
ee37e09d | 948 | return error; |
1da177e4 LT |
949 | } |
950 | } | |
1da177e4 | 951 | |
1da177e4 LT |
952 | return error; |
953 | } | |
954 | ||
903f4fed | 955 | void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4 | 956 | { |
df133c21 JB |
957 | struct device *dev = &sdev->sdev_gendev; |
958 | ||
860dc736 JB |
959 | if (sdev->is_visible) { |
960 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) | |
961 | return; | |
1da177e4 | 962 | |
860dc736 JB |
963 | bsg_unregister_queue(sdev->request_queue); |
964 | device_unregister(&sdev->sdev_dev); | |
965 | transport_remove_device(dev); | |
966 | device_del(dev); | |
967 | } else | |
968 | put_device(&sdev->sdev_dev); | |
1da177e4 LT |
969 | scsi_device_set_state(sdev, SDEV_DEL); |
970 | if (sdev->host->hostt->slave_destroy) | |
971 | sdev->host->hostt->slave_destroy(sdev); | |
df133c21 | 972 | transport_destroy_device(dev); |
86cbfb56 JB |
973 | |
974 | /* cause the request function to reject all I/O requests */ | |
975 | sdev->request_queue->queuedata = NULL; | |
976 | ||
977 | /* Freeing the queue signals to block that we're done */ | |
978 | scsi_free_queue(sdev->request_queue); | |
df133c21 | 979 | put_device(dev); |
903f4fed AS |
980 | } |
981 | ||
982 | /** | |
983 | * scsi_remove_device - unregister a device from the scsi bus | |
984 | * @sdev: scsi_device to unregister | |
985 | **/ | |
986 | void scsi_remove_device(struct scsi_device *sdev) | |
987 | { | |
54195002 AS |
988 | struct Scsi_Host *shost = sdev->host; |
989 | ||
0b950672 | 990 | mutex_lock(&shost->scan_mutex); |
903f4fed | 991 | __scsi_remove_device(sdev); |
0b950672 | 992 | mutex_unlock(&shost->scan_mutex); |
1da177e4 LT |
993 | } |
994 | EXPORT_SYMBOL(scsi_remove_device); | |
995 | ||
44818efb | 996 | static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4 LT |
997 | { |
998 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
999 | unsigned long flags; | |
a64358db | 1000 | struct scsi_device *sdev; |
1da177e4 LT |
1001 | |
1002 | spin_lock_irqsave(shost->host_lock, flags); | |
1003 | starget->reap_ref++; | |
a64358db AS |
1004 | restart: |
1005 | list_for_each_entry(sdev, &shost->__devices, siblings) { | |
1da177e4 | 1006 | if (sdev->channel != starget->channel || |
a64358db | 1007 | sdev->id != starget->id || |
546ae796 | 1008 | scsi_device_get(sdev)) |
1da177e4 LT |
1009 | continue; |
1010 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1011 | scsi_remove_device(sdev); | |
546ae796 | 1012 | scsi_device_put(sdev); |
1da177e4 | 1013 | spin_lock_irqsave(shost->host_lock, flags); |
a64358db | 1014 | goto restart; |
1da177e4 LT |
1015 | } |
1016 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1017 | scsi_target_reap(starget); | |
1018 | } | |
1019 | ||
20b1e674 | 1020 | static int __remove_child (struct device * dev, void * data) |
1021 | { | |
1022 | if (scsi_is_target_device(dev)) | |
1023 | __scsi_remove_target(to_scsi_target(dev)); | |
1024 | return 0; | |
1025 | } | |
1026 | ||
1da177e4 LT |
1027 | /** |
1028 | * scsi_remove_target - try to remove a target and all its devices | |
1029 | * @dev: generic starget or parent of generic stargets to be removed | |
1030 | * | |
1031 | * Note: This is slightly racy. It is possible that if the user | |
1032 | * requests the addition of another device then the target won't be | |
1033 | * removed. | |
1034 | */ | |
1035 | void scsi_remove_target(struct device *dev) | |
1036 | { | |
1da177e4 LT |
1037 | if (scsi_is_target_device(dev)) { |
1038 | __scsi_remove_target(to_scsi_target(dev)); | |
1039 | return; | |
1040 | } | |
1041 | ||
41511704 | 1042 | get_device(dev); |
20b1e674 | 1043 | device_for_each_child(dev, NULL, __remove_child); |
41511704 | 1044 | put_device(dev); |
1da177e4 LT |
1045 | } |
1046 | EXPORT_SYMBOL(scsi_remove_target); | |
1047 | ||
1048 | int scsi_register_driver(struct device_driver *drv) | |
1049 | { | |
1050 | drv->bus = &scsi_bus_type; | |
1051 | ||
1052 | return driver_register(drv); | |
1053 | } | |
1054 | EXPORT_SYMBOL(scsi_register_driver); | |
1055 | ||
1056 | int scsi_register_interface(struct class_interface *intf) | |
1057 | { | |
1058 | intf->class = &sdev_class; | |
1059 | ||
1060 | return class_interface_register(intf); | |
1061 | } | |
1062 | EXPORT_SYMBOL(scsi_register_interface); | |
1063 | ||
1da177e4 LT |
1064 | /** |
1065 | * scsi_sysfs_add_host - add scsi host to subsystem | |
1066 | * @shost: scsi host struct to add to subsystem | |
1da177e4 LT |
1067 | **/ |
1068 | int scsi_sysfs_add_host(struct Scsi_Host *shost) | |
1069 | { | |
1070 | int error, i; | |
1071 | ||
f7120a4f | 1072 | /* add host specific attributes */ |
1da177e4 LT |
1073 | if (shost->hostt->shost_attrs) { |
1074 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { | |
ee959b00 | 1075 | error = device_create_file(&shost->shost_dev, |
f7120a4f | 1076 | shost->hostt->shost_attrs[i]); |
1da177e4 LT |
1077 | if (error) |
1078 | return error; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | transport_register_device(&shost->shost_gendev); | |
d52b3815 | 1083 | transport_configure_device(&shost->shost_gendev); |
1da177e4 LT |
1084 | return 0; |
1085 | } | |
1086 | ||
bfd12944 KS |
1087 | static struct device_type scsi_dev_type = { |
1088 | .name = "scsi_device", | |
1089 | .release = scsi_device_dev_release, | |
1090 | .groups = scsi_sdev_attr_groups, | |
1091 | }; | |
1092 | ||
1da177e4 LT |
1093 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
1094 | { | |
1095 | unsigned long flags; | |
1096 | struct Scsi_Host *shost = sdev->host; | |
1097 | struct scsi_target *starget = sdev->sdev_target; | |
1098 | ||
1099 | device_initialize(&sdev->sdev_gendev); | |
1100 | sdev->sdev_gendev.bus = &scsi_bus_type; | |
bfd12944 | 1101 | sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55 KS |
1102 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
1103 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
1104 | ||
ee959b00 | 1105 | device_initialize(&sdev->sdev_dev); |
37e6ba00 | 1106 | sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00 | 1107 | sdev->sdev_dev.class = &sdev_class; |
71610f55 KS |
1108 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
1109 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); | |
7c9d6f16 | 1110 | sdev->scsi_level = starget->scsi_level; |
1da177e4 LT |
1111 | transport_setup_device(&sdev->sdev_gendev); |
1112 | spin_lock_irqsave(shost->host_lock, flags); | |
1113 | list_add_tail(&sdev->same_target_siblings, &starget->devices); | |
1114 | list_add_tail(&sdev->siblings, &shost->__devices); | |
1115 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1116 | } | |
1117 | ||
1118 | int scsi_is_sdev_device(const struct device *dev) | |
1119 | { | |
13ba9bcb | 1120 | return dev->type == &scsi_dev_type; |
1da177e4 LT |
1121 | } |
1122 | EXPORT_SYMBOL(scsi_is_sdev_device); | |
1123 | ||
1124 | /* A blank transport template that is used in drivers that don't | |
1125 | * yet implement Transport Attributes */ | |
1126 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |