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9#include <linux/module.h>
10#include <linux/slab.h>
11#include <linux/init.h>
12#include <linux/blkdev.h>
13#include <linux/device.h>
14#include <linux/pm_runtime.h>
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_dh.h>
21#include <scsi/scsi_transport.h>
22#include <scsi/scsi_driver.h>
23#include <scsi/scsi_devinfo.h>
24
25#include "scsi_priv.h"
26#include "scsi_logging.h"
27
28static struct device_type scsi_dev_type;
29
30static const struct {
31 enum scsi_device_state value;
32 char *name;
33} sdev_states[] = {
34 { SDEV_CREATED, "created" },
35 { SDEV_RUNNING, "running" },
36 { SDEV_CANCEL, "cancel" },
37 { SDEV_DEL, "deleted" },
38 { SDEV_QUIESCE, "quiesce" },
39 { SDEV_OFFLINE, "offline" },
40 { SDEV_TRANSPORT_OFFLINE, "transport-offline" },
41 { SDEV_BLOCK, "blocked" },
42 { SDEV_CREATED_BLOCK, "created-blocked" },
43};
44
45const char *scsi_device_state_name(enum scsi_device_state state)
46{
47 int i;
48 char *name = NULL;
49
50 for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
51 if (sdev_states[i].value == state) {
52 name = sdev_states[i].name;
53 break;
54 }
55 }
56 return name;
57}
58
59static const struct {
60 enum scsi_host_state value;
61 char *name;
62} shost_states[] = {
63 { SHOST_CREATED, "created" },
64 { SHOST_RUNNING, "running" },
65 { SHOST_CANCEL, "cancel" },
66 { SHOST_DEL, "deleted" },
67 { SHOST_RECOVERY, "recovery" },
68 { SHOST_CANCEL_RECOVERY, "cancel/recovery" },
69 { SHOST_DEL_RECOVERY, "deleted/recovery", },
70};
71const char *scsi_host_state_name(enum scsi_host_state state)
72{
73 int i;
74 char *name = NULL;
75
76 for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
77 if (shost_states[i].value == state) {
78 name = shost_states[i].name;
79 break;
80 }
81 }
82 return name;
83}
84
85#ifdef CONFIG_SCSI_DH
86static const struct {
87 unsigned char value;
88 char *name;
89} sdev_access_states[] = {
90 { SCSI_ACCESS_STATE_OPTIMAL, "active/optimized" },
91 { SCSI_ACCESS_STATE_ACTIVE, "active/non-optimized" },
92 { SCSI_ACCESS_STATE_STANDBY, "standby" },
93 { SCSI_ACCESS_STATE_UNAVAILABLE, "unavailable" },
94 { SCSI_ACCESS_STATE_LBA, "lba-dependent" },
95 { SCSI_ACCESS_STATE_OFFLINE, "offline" },
96 { SCSI_ACCESS_STATE_TRANSITIONING, "transitioning" },
97};
98
99static const char *scsi_access_state_name(unsigned char state)
100{
101 int i;
102 char *name = NULL;
103
104 for (i = 0; i < ARRAY_SIZE(sdev_access_states); i++) {
105 if (sdev_access_states[i].value == state) {
106 name = sdev_access_states[i].name;
107 break;
108 }
109 }
110 return name;
111}
112#endif
113
114static int check_set(unsigned long long *val, char *src)
115{
116 char *last;
117
118 if (strcmp(src, "-") == 0) {
119 *val = SCAN_WILD_CARD;
120 } else {
121
122
123
124 *val = simple_strtoull(src, &last, 0);
125 if (*last != '\0')
126 return 1;
127 }
128 return 0;
129}
130
131static int scsi_scan(struct Scsi_Host *shost, const char *str)
132{
133 char s1[15], s2[15], s3[17], junk;
134 unsigned long long channel, id, lun;
135 int res;
136
137 res = sscanf(str, "%10s %10s %16s %c", s1, s2, s3, &junk);
138 if (res != 3)
139 return -EINVAL;
140 if (check_set(&channel, s1))
141 return -EINVAL;
142 if (check_set(&id, s2))
143 return -EINVAL;
144 if (check_set(&lun, s3))
145 return -EINVAL;
146 if (shost->transportt->user_scan)
147 res = shost->transportt->user_scan(shost, channel, id, lun);
148 else
149 res = scsi_scan_host_selected(shost, channel, id, lun,
150 SCSI_SCAN_MANUAL);
151 return res;
152}
153
154
155
156
157
158#define shost_show_function(name, field, format_string) \
159static ssize_t \
160show_##name (struct device *dev, struct device_attribute *attr, \
161 char *buf) \
162{ \
163 struct Scsi_Host *shost = class_to_shost(dev); \
164 return snprintf (buf, 20, format_string, shost->field); \
165}
166
167
168
169
170
171#define shost_rd_attr2(name, field, format_string) \
172 shost_show_function(name, field, format_string) \
173static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
174
175#define shost_rd_attr(field, format_string) \
176shost_rd_attr2(field, field, format_string)
177
178
179
180
181
182static ssize_t
183store_scan(struct device *dev, struct device_attribute *attr,
184 const char *buf, size_t count)
185{
186 struct Scsi_Host *shost = class_to_shost(dev);
187 int res;
188
189 res = scsi_scan(shost, buf);
190 if (res == 0)
191 res = count;
192 return res;
193};
194static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
195
196static ssize_t
197store_shost_state(struct device *dev, struct device_attribute *attr,
198 const char *buf, size_t count)
199{
200 int i;
201 struct Scsi_Host *shost = class_to_shost(dev);
202 enum scsi_host_state state = 0;
203
204 for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
205 const int len = strlen(shost_states[i].name);
206 if (strncmp(shost_states[i].name, buf, len) == 0 &&
207 buf[len] == '\n') {
208 state = shost_states[i].value;
209 break;
210 }
211 }
212 if (!state)
213 return -EINVAL;
214
215 if (scsi_host_set_state(shost, state))
216 return -EINVAL;
217 return count;
218}
219
220static ssize_t
221show_shost_state(struct device *dev, struct device_attribute *attr, char *buf)
222{
223 struct Scsi_Host *shost = class_to_shost(dev);
224 const char *name = scsi_host_state_name(shost->shost_state);
225
226 if (!name)
227 return -EINVAL;
228
229 return snprintf(buf, 20, "%s\n", name);
230}
231
232
233static struct device_attribute dev_attr_hstate =
234 __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
235
236static ssize_t
237show_shost_mode(unsigned int mode, char *buf)
238{
239 ssize_t len = 0;
240
241 if (mode & MODE_INITIATOR)
242 len = sprintf(buf, "%s", "Initiator");
243
244 if (mode & MODE_TARGET)
245 len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target");
246
247 len += sprintf(buf + len, "\n");
248
249 return len;
250}
251
252static ssize_t
253show_shost_supported_mode(struct device *dev, struct device_attribute *attr,
254 char *buf)
255{
256 struct Scsi_Host *shost = class_to_shost(dev);
257 unsigned int supported_mode = shost->hostt->supported_mode;
258
259 if (supported_mode == MODE_UNKNOWN)
260
261 supported_mode = MODE_INITIATOR;
262
263 return show_shost_mode(supported_mode, buf);
264}
265
266static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);
267
268static ssize_t
269show_shost_active_mode(struct device *dev,
270 struct device_attribute *attr, char *buf)
271{
272 struct Scsi_Host *shost = class_to_shost(dev);
273
274 if (shost->active_mode == MODE_UNKNOWN)
275 return snprintf(buf, 20, "unknown\n");
276 else
277 return show_shost_mode(shost->active_mode, buf);
278}
279
280static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL);
281
282static int check_reset_type(const char *str)
283{
284 if (sysfs_streq(str, "adapter"))
285 return SCSI_ADAPTER_RESET;
286 else if (sysfs_streq(str, "firmware"))
287 return SCSI_FIRMWARE_RESET;
288 else
289 return 0;
290}
291
292static ssize_t
293store_host_reset(struct device *dev, struct device_attribute *attr,
294 const char *buf, size_t count)
295{
296 struct Scsi_Host *shost = class_to_shost(dev);
297 struct scsi_host_template *sht = shost->hostt;
298 int ret = -EINVAL;
299 int type;
300
301 type = check_reset_type(buf);
302 if (!type)
303 goto exit_store_host_reset;
304
305 if (sht->host_reset)
306 ret = sht->host_reset(shost, type);
307 else
308 ret = -EOPNOTSUPP;
309
310exit_store_host_reset:
311 if (ret == 0)
312 ret = count;
313 return ret;
314}
315
316static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset);
317
318static ssize_t
319show_shost_eh_deadline(struct device *dev,
320 struct device_attribute *attr, char *buf)
321{
322 struct Scsi_Host *shost = class_to_shost(dev);
323
324 if (shost->eh_deadline == -1)
325 return snprintf(buf, strlen("off") + 2, "off\n");
326 return sprintf(buf, "%u\n", shost->eh_deadline / HZ);
327}
328
329static ssize_t
330store_shost_eh_deadline(struct device *dev, struct device_attribute *attr,
331 const char *buf, size_t count)
332{
333 struct Scsi_Host *shost = class_to_shost(dev);
334 int ret = -EINVAL;
335 unsigned long deadline, flags;
336
337 if (shost->transportt &&
338 (shost->transportt->eh_strategy_handler ||
339 !shost->hostt->eh_host_reset_handler))
340 return ret;
341
342 if (!strncmp(buf, "off", strlen("off")))
343 deadline = -1;
344 else {
345 ret = kstrtoul(buf, 10, &deadline);
346 if (ret)
347 return ret;
348 if (deadline * HZ > UINT_MAX)
349 return -EINVAL;
350 }
351
352 spin_lock_irqsave(shost->host_lock, flags);
353 if (scsi_host_in_recovery(shost))
354 ret = -EBUSY;
355 else {
356 if (deadline == -1)
357 shost->eh_deadline = -1;
358 else
359 shost->eh_deadline = deadline * HZ;
360
361 ret = count;
362 }
363 spin_unlock_irqrestore(shost->host_lock, flags);
364
365 return ret;
366}
367
368static DEVICE_ATTR(eh_deadline, S_IRUGO | S_IWUSR, show_shost_eh_deadline, store_shost_eh_deadline);
369
370shost_rd_attr(use_blk_mq, "%d\n");
371shost_rd_attr(unique_id, "%u\n");
372shost_rd_attr(cmd_per_lun, "%hd\n");
373shost_rd_attr(can_queue, "%hd\n");
374shost_rd_attr(sg_tablesize, "%hu\n");
375shost_rd_attr(sg_prot_tablesize, "%hu\n");
376shost_rd_attr(unchecked_isa_dma, "%d\n");
377shost_rd_attr(prot_capabilities, "%u\n");
378shost_rd_attr(prot_guard_type, "%hd\n");
379shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
380
381static ssize_t
382show_host_busy(struct device *dev, struct device_attribute *attr, char *buf)
383{
384 struct Scsi_Host *shost = class_to_shost(dev);
385 return snprintf(buf, 20, "%d\n", atomic_read(&shost->host_busy));
386}
387static DEVICE_ATTR(host_busy, S_IRUGO, show_host_busy, NULL);
388
389static struct attribute *scsi_sysfs_shost_attrs[] = {
390 &dev_attr_use_blk_mq.attr,
391 &dev_attr_unique_id.attr,
392 &dev_attr_host_busy.attr,
393 &dev_attr_cmd_per_lun.attr,
394 &dev_attr_can_queue.attr,
395 &dev_attr_sg_tablesize.attr,
396 &dev_attr_sg_prot_tablesize.attr,
397 &dev_attr_unchecked_isa_dma.attr,
398 &dev_attr_proc_name.attr,
399 &dev_attr_scan.attr,
400 &dev_attr_hstate.attr,
401 &dev_attr_supported_mode.attr,
402 &dev_attr_active_mode.attr,
403 &dev_attr_prot_capabilities.attr,
404 &dev_attr_prot_guard_type.attr,
405 &dev_attr_host_reset.attr,
406 &dev_attr_eh_deadline.attr,
407 NULL
408};
409
410static struct attribute_group scsi_shost_attr_group = {
411 .attrs = scsi_sysfs_shost_attrs,
412};
413
414const struct attribute_group *scsi_sysfs_shost_attr_groups[] = {
415 &scsi_shost_attr_group,
416 NULL
417};
418
419static void scsi_device_cls_release(struct device *class_dev)
420{
421 struct scsi_device *sdev;
422
423 sdev = class_to_sdev(class_dev);
424 put_device(&sdev->sdev_gendev);
425}
426
427static void scsi_device_dev_release_usercontext(struct work_struct *work)
428{
429 struct scsi_device *sdev;
430 struct device *parent;
431 struct list_head *this, *tmp;
432 struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL;
433 unsigned long flags;
434
435 sdev = container_of(work, struct scsi_device, ew.work);
436
437 scsi_dh_release_device(sdev);
438
439 parent = sdev->sdev_gendev.parent;
440
441 spin_lock_irqsave(sdev->host->host_lock, flags);
442 list_del(&sdev->siblings);
443 list_del(&sdev->same_target_siblings);
444 list_del(&sdev->starved_entry);
445 spin_unlock_irqrestore(sdev->host->host_lock, flags);
446
447 cancel_work_sync(&sdev->event_work);
448
449 list_for_each_safe(this, tmp, &sdev->event_list) {
450 struct scsi_event *evt;
451
452 evt = list_entry(this, struct scsi_event, node);
453 list_del(&evt->node);
454 kfree(evt);
455 }
456
457 blk_put_queue(sdev->request_queue);
458
459 sdev->request_queue = NULL;
460
461 mutex_lock(&sdev->inquiry_mutex);
462 rcu_swap_protected(sdev->vpd_pg80, vpd_pg80,
463 lockdep_is_held(&sdev->inquiry_mutex));
464 rcu_swap_protected(sdev->vpd_pg83, vpd_pg83,
465 lockdep_is_held(&sdev->inquiry_mutex));
466 mutex_unlock(&sdev->inquiry_mutex);
467
468 if (vpd_pg83)
469 kfree_rcu(vpd_pg83, rcu);
470 if (vpd_pg80)
471 kfree_rcu(vpd_pg80, rcu);
472 kfree(sdev->inquiry);
473 kfree(sdev);
474
475 if (parent)
476 put_device(parent);
477}
478
479static void scsi_device_dev_release(struct device *dev)
480{
481 struct scsi_device *sdp = to_scsi_device(dev);
482 execute_in_process_context(scsi_device_dev_release_usercontext,
483 &sdp->ew);
484}
485
486static struct class sdev_class = {
487 .name = "scsi_device",
488 .dev_release = scsi_device_cls_release,
489};
490
491
492static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
493{
494 struct scsi_device *sdp;
495
496 if (dev->type != &scsi_dev_type)
497 return 0;
498
499 sdp = to_scsi_device(dev);
500 if (sdp->no_uld_attach)
501 return 0;
502 return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
503}
504
505static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
506{
507 struct scsi_device *sdev;
508
509 if (dev->type != &scsi_dev_type)
510 return 0;
511
512 sdev = to_scsi_device(dev);
513
514 add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
515 return 0;
516}
517
518struct bus_type scsi_bus_type = {
519 .name = "scsi",
520 .match = scsi_bus_match,
521 .uevent = scsi_bus_uevent,
522#ifdef CONFIG_PM
523 .pm = &scsi_bus_pm_ops,
524#endif
525};
526EXPORT_SYMBOL_GPL(scsi_bus_type);
527
528int scsi_sysfs_register(void)
529{
530 int error;
531
532 error = bus_register(&scsi_bus_type);
533 if (!error) {
534 error = class_register(&sdev_class);
535 if (error)
536 bus_unregister(&scsi_bus_type);
537 }
538
539 return error;
540}
541
542void scsi_sysfs_unregister(void)
543{
544 class_unregister(&sdev_class);
545 bus_unregister(&scsi_bus_type);
546}
547
548
549
550
551
552#define sdev_show_function(field, format_string) \
553static ssize_t \
554sdev_show_##field (struct device *dev, struct device_attribute *attr, \
555 char *buf) \
556{ \
557 struct scsi_device *sdev; \
558 sdev = to_scsi_device(dev); \
559 return snprintf (buf, 20, format_string, sdev->field); \
560} \
561
562
563
564
565
566#define sdev_rd_attr(field, format_string) \
567 sdev_show_function(field, format_string) \
568static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL);
569
570
571
572
573
574
575#define sdev_rw_attr(field, format_string) \
576 sdev_show_function(field, format_string) \
577 \
578static ssize_t \
579sdev_store_##field (struct device *dev, struct device_attribute *attr, \
580 const char *buf, size_t count) \
581{ \
582 struct scsi_device *sdev; \
583 sdev = to_scsi_device(dev); \
584 sscanf (buf, format_string, &sdev->field); \
585 return count; \
586} \
587static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
588
589
590
591#if 0
592
593
594
595
596#define sdev_rw_attr_bit(field) \
597 sdev_show_function(field, "%d\n") \
598 \
599static ssize_t \
600sdev_store_##field (struct device *dev, struct device_attribute *attr, \
601 const char *buf, size_t count) \
602{ \
603 int ret; \
604 struct scsi_device *sdev; \
605 ret = scsi_sdev_check_buf_bit(buf); \
606 if (ret >= 0) { \
607 sdev = to_scsi_device(dev); \
608 sdev->field = ret; \
609 ret = count; \
610 } \
611 return ret; \
612} \
613static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
614
615
616
617
618
619static int scsi_sdev_check_buf_bit(const char *buf)
620{
621 if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
622 if (buf[0] == '1')
623 return 1;
624 else if (buf[0] == '0')
625 return 0;
626 else
627 return -EINVAL;
628 } else
629 return -EINVAL;
630}
631#endif
632
633
634
635sdev_rd_attr (type, "%d\n");
636sdev_rd_attr (scsi_level, "%d\n");
637sdev_rd_attr (vendor, "%.8s\n");
638sdev_rd_attr (model, "%.16s\n");
639sdev_rd_attr (rev, "%.4s\n");
640
641static ssize_t
642sdev_show_device_busy(struct device *dev, struct device_attribute *attr,
643 char *buf)
644{
645 struct scsi_device *sdev = to_scsi_device(dev);
646 return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_busy));
647}
648static DEVICE_ATTR(device_busy, S_IRUGO, sdev_show_device_busy, NULL);
649
650static ssize_t
651sdev_show_device_blocked(struct device *dev, struct device_attribute *attr,
652 char *buf)
653{
654 struct scsi_device *sdev = to_scsi_device(dev);
655 return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_blocked));
656}
657static DEVICE_ATTR(device_blocked, S_IRUGO, sdev_show_device_blocked, NULL);
658
659
660
661
662static ssize_t
663sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf)
664{
665 struct scsi_device *sdev;
666 sdev = to_scsi_device(dev);
667 return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ);
668}
669
670static ssize_t
671sdev_store_timeout (struct device *dev, struct device_attribute *attr,
672 const char *buf, size_t count)
673{
674 struct scsi_device *sdev;
675 int timeout;
676 sdev = to_scsi_device(dev);
677 sscanf (buf, "%d\n", &timeout);
678 blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
679 return count;
680}
681static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);
682
683static ssize_t
684sdev_show_eh_timeout(struct device *dev, struct device_attribute *attr, char *buf)
685{
686 struct scsi_device *sdev;
687 sdev = to_scsi_device(dev);
688 return snprintf(buf, 20, "%u\n", sdev->eh_timeout / HZ);
689}
690
691static ssize_t
692sdev_store_eh_timeout(struct device *dev, struct device_attribute *attr,
693 const char *buf, size_t count)
694{
695 struct scsi_device *sdev;
696 unsigned int eh_timeout;
697 int err;
698
699 if (!capable(CAP_SYS_ADMIN))
700 return -EACCES;
701
702 sdev = to_scsi_device(dev);
703 err = kstrtouint(buf, 10, &eh_timeout);
704 if (err)
705 return err;
706 sdev->eh_timeout = eh_timeout * HZ;
707
708 return count;
709}
710static DEVICE_ATTR(eh_timeout, S_IRUGO | S_IWUSR, sdev_show_eh_timeout, sdev_store_eh_timeout);
711
712static ssize_t
713store_rescan_field (struct device *dev, struct device_attribute *attr,
714 const char *buf, size_t count)
715{
716 scsi_rescan_device(dev);
717 return count;
718}
719static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
720
721static ssize_t
722sdev_store_delete(struct device *dev, struct device_attribute *attr,
723 const char *buf, size_t count)
724{
725 if (device_remove_file_self(dev, attr))
726 scsi_remove_device(to_scsi_device(dev));
727 return count;
728};
729static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
730
731static ssize_t
732store_state_field(struct device *dev, struct device_attribute *attr,
733 const char *buf, size_t count)
734{
735 int i, ret;
736 struct scsi_device *sdev = to_scsi_device(dev);
737 enum scsi_device_state state = 0;
738
739 for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
740 const int len = strlen(sdev_states[i].name);
741 if (strncmp(sdev_states[i].name, buf, len) == 0 &&
742 buf[len] == '\n') {
743 state = sdev_states[i].value;
744 break;
745 }
746 }
747 if (!state)
748 return -EINVAL;
749
750 mutex_lock(&sdev->state_mutex);
751 ret = scsi_device_set_state(sdev, state);
752 mutex_unlock(&sdev->state_mutex);
753
754 return ret == 0 ? count : -EINVAL;
755}
756
757static ssize_t
758show_state_field(struct device *dev, struct device_attribute *attr, char *buf)
759{
760 struct scsi_device *sdev = to_scsi_device(dev);
761 const char *name = scsi_device_state_name(sdev->sdev_state);
762
763 if (!name)
764 return -EINVAL;
765
766 return snprintf(buf, 20, "%s\n", name);
767}
768
769static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field);
770
771static ssize_t
772show_queue_type_field(struct device *dev, struct device_attribute *attr,
773 char *buf)
774{
775 struct scsi_device *sdev = to_scsi_device(dev);
776 const char *name = "none";
777
778 if (sdev->simple_tags)
779 name = "simple";
780
781 return snprintf(buf, 20, "%s\n", name);
782}
783
784static ssize_t
785store_queue_type_field(struct device *dev, struct device_attribute *attr,
786 const char *buf, size_t count)
787{
788 struct scsi_device *sdev = to_scsi_device(dev);
789
790 if (!sdev->tagged_supported)
791 return -EINVAL;
792
793 sdev_printk(KERN_INFO, sdev,
794 "ignoring write to deprecated queue_type attribute");
795 return count;
796}
797
798static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
799 store_queue_type_field);
800
801#define sdev_vpd_pg_attr(_page) \
802static ssize_t \
803show_vpd_##_page(struct file *filp, struct kobject *kobj, \
804 struct bin_attribute *bin_attr, \
805 char *buf, loff_t off, size_t count) \
806{ \
807 struct device *dev = container_of(kobj, struct device, kobj); \
808 struct scsi_device *sdev = to_scsi_device(dev); \
809 struct scsi_vpd *vpd_page; \
810 int ret = -EINVAL; \
811 \
812 rcu_read_lock(); \
813 vpd_page = rcu_dereference(sdev->vpd_##_page); \
814 if (vpd_page) \
815 ret = memory_read_from_buffer(buf, count, &off, \
816 vpd_page->data, vpd_page->len); \
817 rcu_read_unlock(); \
818 return ret; \
819} \
820static struct bin_attribute dev_attr_vpd_##_page = { \
821 .attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO }, \
822 .size = 0, \
823 .read = show_vpd_##_page, \
824};
825
826sdev_vpd_pg_attr(pg83);
827sdev_vpd_pg_attr(pg80);
828
829static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
830 struct bin_attribute *bin_attr,
831 char *buf, loff_t off, size_t count)
832{
833 struct device *dev = container_of(kobj, struct device, kobj);
834 struct scsi_device *sdev = to_scsi_device(dev);
835
836 if (!sdev->inquiry)
837 return -EINVAL;
838
839 return memory_read_from_buffer(buf, count, &off, sdev->inquiry,
840 sdev->inquiry_len);
841}
842
843static struct bin_attribute dev_attr_inquiry = {
844 .attr = {
845 .name = "inquiry",
846 .mode = S_IRUGO,
847 },
848 .size = 0,
849 .read = show_inquiry,
850};
851
852static ssize_t
853show_iostat_counterbits(struct device *dev, struct device_attribute *attr,
854 char *buf)
855{
856 return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8);
857}
858
859static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL);
860
861#define show_sdev_iostat(field) \
862static ssize_t \
863show_iostat_##field(struct device *dev, struct device_attribute *attr, \
864 char *buf) \
865{ \
866 struct scsi_device *sdev = to_scsi_device(dev); \
867 unsigned long long count = atomic_read(&sdev->field); \
868 return snprintf(buf, 20, "0x%llx\n", count); \
869} \
870static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
871
872show_sdev_iostat(iorequest_cnt);
873show_sdev_iostat(iodone_cnt);
874show_sdev_iostat(ioerr_cnt);
875
876static ssize_t
877sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
878{
879 struct scsi_device *sdev;
880 sdev = to_scsi_device(dev);
881 return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type);
882}
883static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL);
884
885#define DECLARE_EVT_SHOW(name, Cap_name) \
886static ssize_t \
887sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \
888 char *buf) \
889{ \
890 struct scsi_device *sdev = to_scsi_device(dev); \
891 int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\
892 return snprintf(buf, 20, "%d\n", val); \
893}
894
895#define DECLARE_EVT_STORE(name, Cap_name) \
896static ssize_t \
897sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\
898 const char *buf, size_t count) \
899{ \
900 struct scsi_device *sdev = to_scsi_device(dev); \
901 int val = simple_strtoul(buf, NULL, 0); \
902 if (val == 0) \
903 clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
904 else if (val == 1) \
905 set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
906 else \
907 return -EINVAL; \
908 return count; \
909}
910
911#define DECLARE_EVT(name, Cap_name) \
912 DECLARE_EVT_SHOW(name, Cap_name) \
913 DECLARE_EVT_STORE(name, Cap_name) \
914 static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \
915 sdev_store_evt_##name);
916#define REF_EVT(name) &dev_attr_evt_##name.attr
917
918DECLARE_EVT(media_change, MEDIA_CHANGE)
919DECLARE_EVT(inquiry_change_reported, INQUIRY_CHANGE_REPORTED)
920DECLARE_EVT(capacity_change_reported, CAPACITY_CHANGE_REPORTED)
921DECLARE_EVT(soft_threshold_reached, SOFT_THRESHOLD_REACHED_REPORTED)
922DECLARE_EVT(mode_parameter_change_reported, MODE_PARAMETER_CHANGE_REPORTED)
923DECLARE_EVT(lun_change_reported, LUN_CHANGE_REPORTED)
924
925static ssize_t
926sdev_store_queue_depth(struct device *dev, struct device_attribute *attr,
927 const char *buf, size_t count)
928{
929 int depth, retval;
930 struct scsi_device *sdev = to_scsi_device(dev);
931 struct scsi_host_template *sht = sdev->host->hostt;
932
933 if (!sht->change_queue_depth)
934 return -EINVAL;
935
936 depth = simple_strtoul(buf, NULL, 0);
937
938 if (depth < 1 || depth > sdev->host->can_queue)
939 return -EINVAL;
940
941 retval = sht->change_queue_depth(sdev, depth);
942 if (retval < 0)
943 return retval;
944
945 sdev->max_queue_depth = sdev->queue_depth;
946
947 return count;
948}
949sdev_show_function(queue_depth, "%d\n");
950
951static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth,
952 sdev_store_queue_depth);
953
954static ssize_t
955sdev_show_wwid(struct device *dev, struct device_attribute *attr,
956 char *buf)
957{
958 struct scsi_device *sdev = to_scsi_device(dev);
959 ssize_t count;
960
961 count = scsi_vpd_lun_id(sdev, buf, PAGE_SIZE);
962 if (count > 0) {
963 buf[count] = '\n';
964 count++;
965 }
966 return count;
967}
968static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL);
969
970#define BLIST_FLAG_NAME(name) \
971 [const_ilog2((__force __u64)BLIST_##name)] = #name
972static const char *const sdev_bflags_name[] = {
973#include "scsi_devinfo_tbl.c"
974};
975#undef BLIST_FLAG_NAME
976
977static ssize_t
978sdev_show_blacklist(struct device *dev, struct device_attribute *attr,
979 char *buf)
980{
981 struct scsi_device *sdev = to_scsi_device(dev);
982 int i;
983 ssize_t len = 0;
984
985 for (i = 0; i < sizeof(sdev->sdev_bflags) * BITS_PER_BYTE; i++) {
986 const char *name = NULL;
987
988 if (!(sdev->sdev_bflags & (__force blist_flags_t)BIT(i)))
989 continue;
990 if (i < ARRAY_SIZE(sdev_bflags_name) && sdev_bflags_name[i])
991 name = sdev_bflags_name[i];
992
993 if (name)
994 len += snprintf(buf + len, PAGE_SIZE - len,
995 "%s%s", len ? " " : "", name);
996 else
997 len += snprintf(buf + len, PAGE_SIZE - len,
998 "%sINVALID_BIT(%d)", len ? " " : "", i);
999 }
1000 if (len)
1001 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
1002 return len;
1003}
1004static DEVICE_ATTR(blacklist, S_IRUGO, sdev_show_blacklist, NULL);
1005
1006#ifdef CONFIG_SCSI_DH
1007static ssize_t
1008sdev_show_dh_state(struct device *dev, struct device_attribute *attr,
1009 char *buf)
1010{
1011 struct scsi_device *sdev = to_scsi_device(dev);
1012
1013 if (!sdev->handler)
1014 return snprintf(buf, 20, "detached\n");
1015
1016 return snprintf(buf, 20, "%s\n", sdev->handler->name);
1017}
1018
1019static ssize_t
1020sdev_store_dh_state(struct device *dev, struct device_attribute *attr,
1021 const char *buf, size_t count)
1022{
1023 struct scsi_device *sdev = to_scsi_device(dev);
1024 int err = -EINVAL;
1025
1026 if (sdev->sdev_state == SDEV_CANCEL ||
1027 sdev->sdev_state == SDEV_DEL)
1028 return -ENODEV;
1029
1030 if (!sdev->handler) {
1031
1032
1033
1034 err = scsi_dh_attach(sdev->request_queue, buf);
1035 } else if (!strncmp(buf, "activate", 8)) {
1036
1037
1038
1039 if (sdev->handler->activate)
1040 err = sdev->handler->activate(sdev, NULL, NULL);
1041 else
1042 err = 0;
1043 } else if (!strncmp(buf, "detach", 6)) {
1044
1045
1046
1047 sdev_printk(KERN_WARNING, sdev,
1048 "can't detach handler %s.\n",
1049 sdev->handler->name);
1050 err = -EINVAL;
1051 }
1052
1053 return err < 0 ? err : count;
1054}
1055
1056static DEVICE_ATTR(dh_state, S_IRUGO | S_IWUSR, sdev_show_dh_state,
1057 sdev_store_dh_state);
1058
1059static ssize_t
1060sdev_show_access_state(struct device *dev,
1061 struct device_attribute *attr,
1062 char *buf)
1063{
1064 struct scsi_device *sdev = to_scsi_device(dev);
1065 unsigned char access_state;
1066 const char *access_state_name;
1067
1068 if (!sdev->handler)
1069 return -EINVAL;
1070
1071 access_state = (sdev->access_state & SCSI_ACCESS_STATE_MASK);
1072 access_state_name = scsi_access_state_name(access_state);
1073
1074 return sprintf(buf, "%s\n",
1075 access_state_name ? access_state_name : "unknown");
1076}
1077static DEVICE_ATTR(access_state, S_IRUGO, sdev_show_access_state, NULL);
1078
1079static ssize_t
1080sdev_show_preferred_path(struct device *dev,
1081 struct device_attribute *attr,
1082 char *buf)
1083{
1084 struct scsi_device *sdev = to_scsi_device(dev);
1085
1086 if (!sdev->handler)
1087 return -EINVAL;
1088
1089 if (sdev->access_state & SCSI_ACCESS_STATE_PREFERRED)
1090 return sprintf(buf, "1\n");
1091 else
1092 return sprintf(buf, "0\n");
1093}
1094static DEVICE_ATTR(preferred_path, S_IRUGO, sdev_show_preferred_path, NULL);
1095#endif
1096
1097static ssize_t
1098sdev_show_queue_ramp_up_period(struct device *dev,
1099 struct device_attribute *attr,
1100 char *buf)
1101{
1102 struct scsi_device *sdev;
1103 sdev = to_scsi_device(dev);
1104 return snprintf(buf, 20, "%u\n",
1105 jiffies_to_msecs(sdev->queue_ramp_up_period));
1106}
1107
1108static ssize_t
1109sdev_store_queue_ramp_up_period(struct device *dev,
1110 struct device_attribute *attr,
1111 const char *buf, size_t count)
1112{
1113 struct scsi_device *sdev = to_scsi_device(dev);
1114 unsigned int period;
1115
1116 if (kstrtouint(buf, 10, &period))
1117 return -EINVAL;
1118
1119 sdev->queue_ramp_up_period = msecs_to_jiffies(period);
1120 return count;
1121}
1122
1123static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
1124 sdev_show_queue_ramp_up_period,
1125 sdev_store_queue_ramp_up_period);
1126
1127static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
1128 struct attribute *attr, int i)
1129{
1130 struct device *dev = container_of(kobj, struct device, kobj);
1131 struct scsi_device *sdev = to_scsi_device(dev);
1132
1133
1134 if (attr == &dev_attr_queue_depth.attr &&
1135 !sdev->host->hostt->change_queue_depth)
1136 return S_IRUGO;
1137
1138 if (attr == &dev_attr_queue_ramp_up_period.attr &&
1139 !sdev->host->hostt->change_queue_depth)
1140 return 0;
1141
1142#ifdef CONFIG_SCSI_DH
1143 if (attr == &dev_attr_access_state.attr &&
1144 !sdev->handler)
1145 return 0;
1146 if (attr == &dev_attr_preferred_path.attr &&
1147 !sdev->handler)
1148 return 0;
1149#endif
1150 return attr->mode;
1151}
1152
1153static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
1154 struct bin_attribute *attr, int i)
1155{
1156 struct device *dev = container_of(kobj, struct device, kobj);
1157 struct scsi_device *sdev = to_scsi_device(dev);
1158
1159
1160 if (attr == &dev_attr_vpd_pg80 && !sdev->vpd_pg80)
1161 return 0;
1162
1163 if (attr == &dev_attr_vpd_pg83 && !sdev->vpd_pg83)
1164 return 0;
1165
1166 return S_IRUGO;
1167}
1168
1169
1170static struct attribute *scsi_sdev_attrs[] = {
1171 &dev_attr_device_blocked.attr,
1172 &dev_attr_type.attr,
1173 &dev_attr_scsi_level.attr,
1174 &dev_attr_device_busy.attr,
1175 &dev_attr_vendor.attr,
1176 &dev_attr_model.attr,
1177 &dev_attr_rev.attr,
1178 &dev_attr_rescan.attr,
1179 &dev_attr_delete.attr,
1180 &dev_attr_state.attr,
1181 &dev_attr_timeout.attr,
1182 &dev_attr_eh_timeout.attr,
1183 &dev_attr_iocounterbits.attr,
1184 &dev_attr_iorequest_cnt.attr,
1185 &dev_attr_iodone_cnt.attr,
1186 &dev_attr_ioerr_cnt.attr,
1187 &dev_attr_modalias.attr,
1188 &dev_attr_queue_depth.attr,
1189 &dev_attr_queue_type.attr,
1190 &dev_attr_wwid.attr,
1191 &dev_attr_blacklist.attr,
1192#ifdef CONFIG_SCSI_DH
1193 &dev_attr_dh_state.attr,
1194 &dev_attr_access_state.attr,
1195 &dev_attr_preferred_path.attr,
1196#endif
1197 &dev_attr_queue_ramp_up_period.attr,
1198 REF_EVT(media_change),
1199 REF_EVT(inquiry_change_reported),
1200 REF_EVT(capacity_change_reported),
1201 REF_EVT(soft_threshold_reached),
1202 REF_EVT(mode_parameter_change_reported),
1203 REF_EVT(lun_change_reported),
1204 NULL
1205};
1206
1207static struct bin_attribute *scsi_sdev_bin_attrs[] = {
1208 &dev_attr_vpd_pg83,
1209 &dev_attr_vpd_pg80,
1210 &dev_attr_inquiry,
1211 NULL
1212};
1213static struct attribute_group scsi_sdev_attr_group = {
1214 .attrs = scsi_sdev_attrs,
1215 .bin_attrs = scsi_sdev_bin_attrs,
1216 .is_visible = scsi_sdev_attr_is_visible,
1217 .is_bin_visible = scsi_sdev_bin_attr_is_visible,
1218};
1219
1220static const struct attribute_group *scsi_sdev_attr_groups[] = {
1221 &scsi_sdev_attr_group,
1222 NULL
1223};
1224
1225static int scsi_target_add(struct scsi_target *starget)
1226{
1227 int error;
1228
1229 if (starget->state != STARGET_CREATED)
1230 return 0;
1231
1232 error = device_add(&starget->dev);
1233 if (error) {
1234 dev_err(&starget->dev, "target device_add failed, error %d\n", error);
1235 return error;
1236 }
1237 transport_add_device(&starget->dev);
1238 starget->state = STARGET_RUNNING;
1239
1240 pm_runtime_set_active(&starget->dev);
1241 pm_runtime_enable(&starget->dev);
1242 device_enable_async_suspend(&starget->dev);
1243
1244 return 0;
1245}
1246
1247
1248
1249
1250
1251
1252
1253
1254int scsi_sysfs_add_sdev(struct scsi_device *sdev)
1255{
1256 int error, i;
1257 struct request_queue *rq = sdev->request_queue;
1258 struct scsi_target *starget = sdev->sdev_target;
1259
1260 error = scsi_target_add(starget);
1261 if (error)
1262 return error;
1263
1264 transport_configure_device(&starget->dev);
1265
1266 device_enable_async_suspend(&sdev->sdev_gendev);
1267 scsi_autopm_get_target(starget);
1268 pm_runtime_set_active(&sdev->sdev_gendev);
1269 pm_runtime_forbid(&sdev->sdev_gendev);
1270 pm_runtime_enable(&sdev->sdev_gendev);
1271 scsi_autopm_put_target(starget);
1272
1273 scsi_autopm_get_device(sdev);
1274
1275 scsi_dh_add_device(sdev);
1276
1277 error = device_add(&sdev->sdev_gendev);
1278 if (error) {
1279 sdev_printk(KERN_INFO, sdev,
1280 "failed to add device: %d\n", error);
1281 return error;
1282 }
1283
1284 device_enable_async_suspend(&sdev->sdev_dev);
1285 error = device_add(&sdev->sdev_dev);
1286 if (error) {
1287 sdev_printk(KERN_INFO, sdev,
1288 "failed to add class device: %d\n", error);
1289 device_del(&sdev->sdev_gendev);
1290 return error;
1291 }
1292 transport_add_device(&sdev->sdev_gendev);
1293 sdev->is_visible = 1;
1294
1295 error = bsg_scsi_register_queue(rq, &sdev->sdev_gendev);
1296 if (error)
1297
1298
1299 sdev_printk(KERN_INFO, sdev,
1300 "Failed to register bsg queue, errno=%d\n", error);
1301
1302
1303 if (sdev->host->hostt->sdev_attrs) {
1304 for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) {
1305 error = device_create_file(&sdev->sdev_gendev,
1306 sdev->host->hostt->sdev_attrs[i]);
1307 if (error)
1308 return error;
1309 }
1310 }
1311
1312 if (sdev->host->hostt->sdev_groups) {
1313 error = sysfs_create_groups(&sdev->sdev_gendev.kobj,
1314 sdev->host->hostt->sdev_groups);
1315 if (error)
1316 return error;
1317 }
1318
1319 scsi_autopm_put_device(sdev);
1320 return error;
1321}
1322
1323void __scsi_remove_device(struct scsi_device *sdev)
1324{
1325 struct device *dev = &sdev->sdev_gendev;
1326 int res;
1327
1328
1329
1330
1331
1332
1333 if (sdev->sdev_state == SDEV_DEL)
1334 return;
1335
1336 if (sdev->is_visible) {
1337
1338
1339
1340
1341 mutex_lock(&sdev->state_mutex);
1342
1343
1344
1345
1346
1347 res = scsi_device_set_state(sdev, SDEV_CANCEL);
1348 if (res != 0) {
1349 res = scsi_device_set_state(sdev, SDEV_DEL);
1350 if (res == 0)
1351 scsi_start_queue(sdev);
1352 }
1353 mutex_unlock(&sdev->state_mutex);
1354
1355 if (res != 0)
1356 return;
1357
1358 if (sdev->host->hostt->sdev_groups)
1359 sysfs_remove_groups(&sdev->sdev_gendev.kobj,
1360 sdev->host->hostt->sdev_groups);
1361
1362 bsg_unregister_queue(sdev->request_queue);
1363 device_unregister(&sdev->sdev_dev);
1364 transport_remove_device(dev);
1365 device_del(dev);
1366 } else
1367 put_device(&sdev->sdev_dev);
1368
1369
1370
1371
1372
1373
1374 mutex_lock(&sdev->state_mutex);
1375 scsi_device_set_state(sdev, SDEV_DEL);
1376 mutex_unlock(&sdev->state_mutex);
1377
1378 blk_cleanup_queue(sdev->request_queue);
1379 cancel_work_sync(&sdev->requeue_work);
1380
1381 if (sdev->host->hostt->slave_destroy)
1382 sdev->host->hostt->slave_destroy(sdev);
1383 transport_destroy_device(dev);
1384
1385
1386
1387
1388
1389
1390 scsi_target_reap(scsi_target(sdev));
1391
1392 put_device(dev);
1393}
1394
1395
1396
1397
1398
1399void scsi_remove_device(struct scsi_device *sdev)
1400{
1401 struct Scsi_Host *shost = sdev->host;
1402
1403 mutex_lock(&shost->scan_mutex);
1404 __scsi_remove_device(sdev);
1405 mutex_unlock(&shost->scan_mutex);
1406}
1407EXPORT_SYMBOL(scsi_remove_device);
1408
1409static void __scsi_remove_target(struct scsi_target *starget)
1410{
1411 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1412 unsigned long flags;
1413 struct scsi_device *sdev;
1414
1415 spin_lock_irqsave(shost->host_lock, flags);
1416 restart:
1417 list_for_each_entry(sdev, &shost->__devices, siblings) {
1418
1419
1420
1421
1422
1423
1424 if (sdev->channel != starget->channel ||
1425 sdev->id != starget->id)
1426 continue;
1427 if (sdev->sdev_state == SDEV_DEL ||
1428 sdev->sdev_state == SDEV_CANCEL ||
1429 !get_device(&sdev->sdev_gendev))
1430 continue;
1431 spin_unlock_irqrestore(shost->host_lock, flags);
1432 scsi_remove_device(sdev);
1433 put_device(&sdev->sdev_gendev);
1434 spin_lock_irqsave(shost->host_lock, flags);
1435 goto restart;
1436 }
1437 spin_unlock_irqrestore(shost->host_lock, flags);
1438}
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448void scsi_remove_target(struct device *dev)
1449{
1450 struct Scsi_Host *shost = dev_to_shost(dev->parent);
1451 struct scsi_target *starget;
1452 unsigned long flags;
1453
1454restart:
1455 spin_lock_irqsave(shost->host_lock, flags);
1456 list_for_each_entry(starget, &shost->__targets, siblings) {
1457 if (starget->state == STARGET_DEL ||
1458 starget->state == STARGET_REMOVE ||
1459 starget->state == STARGET_CREATED_REMOVE)
1460 continue;
1461 if (starget->dev.parent == dev || &starget->dev == dev) {
1462 kref_get(&starget->reap_ref);
1463 if (starget->state == STARGET_CREATED)
1464 starget->state = STARGET_CREATED_REMOVE;
1465 else
1466 starget->state = STARGET_REMOVE;
1467 spin_unlock_irqrestore(shost->host_lock, flags);
1468 __scsi_remove_target(starget);
1469 scsi_target_reap(starget);
1470 goto restart;
1471 }
1472 }
1473 spin_unlock_irqrestore(shost->host_lock, flags);
1474}
1475EXPORT_SYMBOL(scsi_remove_target);
1476
1477int scsi_register_driver(struct device_driver *drv)
1478{
1479 drv->bus = &scsi_bus_type;
1480
1481 return driver_register(drv);
1482}
1483EXPORT_SYMBOL(scsi_register_driver);
1484
1485int scsi_register_interface(struct class_interface *intf)
1486{
1487 intf->class = &sdev_class;
1488
1489 return class_interface_register(intf);
1490}
1491EXPORT_SYMBOL(scsi_register_interface);
1492
1493
1494
1495
1496
1497int scsi_sysfs_add_host(struct Scsi_Host *shost)
1498{
1499 int error, i;
1500
1501
1502 if (shost->hostt->shost_attrs) {
1503 for (i = 0; shost->hostt->shost_attrs[i]; i++) {
1504 error = device_create_file(&shost->shost_dev,
1505 shost->hostt->shost_attrs[i]);
1506 if (error)
1507 return error;
1508 }
1509 }
1510
1511 transport_register_device(&shost->shost_gendev);
1512 transport_configure_device(&shost->shost_gendev);
1513 return 0;
1514}
1515
1516static struct device_type scsi_dev_type = {
1517 .name = "scsi_device",
1518 .release = scsi_device_dev_release,
1519 .groups = scsi_sdev_attr_groups,
1520};
1521
1522void scsi_sysfs_device_initialize(struct scsi_device *sdev)
1523{
1524 unsigned long flags;
1525 struct Scsi_Host *shost = sdev->host;
1526 struct scsi_target *starget = sdev->sdev_target;
1527
1528 device_initialize(&sdev->sdev_gendev);
1529 sdev->sdev_gendev.bus = &scsi_bus_type;
1530 sdev->sdev_gendev.type = &scsi_dev_type;
1531 dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu",
1532 sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
1533
1534 device_initialize(&sdev->sdev_dev);
1535 sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev);
1536 sdev->sdev_dev.class = &sdev_class;
1537 dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%llu",
1538 sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
1539
1540
1541
1542
1543
1544
1545
1546 sdev->scsi_level = starget->scsi_level;
1547 if (sdev->scsi_level <= SCSI_2 &&
1548 sdev->scsi_level != SCSI_UNKNOWN &&
1549 !shost->no_scsi2_lun_in_cdb)
1550 sdev->lun_in_cdb = 1;
1551
1552 transport_setup_device(&sdev->sdev_gendev);
1553 spin_lock_irqsave(shost->host_lock, flags);
1554 list_add_tail(&sdev->same_target_siblings, &starget->devices);
1555 list_add_tail(&sdev->siblings, &shost->__devices);
1556 spin_unlock_irqrestore(shost->host_lock, flags);
1557
1558
1559
1560
1561
1562 kref_get(&starget->reap_ref);
1563}
1564
1565int scsi_is_sdev_device(const struct device *dev)
1566{
1567 return dev->type == &scsi_dev_type;
1568}
1569EXPORT_SYMBOL(scsi_is_sdev_device);
1570
1571
1572
1573struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, };
1574
