4 * SCSI sysfs interface routines.
6 * Created to pull SCSI mid layer sysfs routines into one file.
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/blkdev.h>
12 #include <linux/device.h>
14 #include <scsi/scsi.h>
15 #include <scsi/scsi_device.h>
16 #include <scsi/scsi_host.h>
17 #include <scsi/scsi_tcq.h>
18 #include <scsi/scsi_transport.h>
19 #include <scsi/scsi_driver.h>
21 #include "scsi_priv.h"
22 #include "scsi_logging.h"
25 enum scsi_device_state value;
28 { SDEV_CREATED, "created" },
29 { SDEV_RUNNING, "running" },
30 { SDEV_CANCEL, "cancel" },
31 { SDEV_DEL, "deleted" },
32 { SDEV_QUIESCE, "quiesce" },
33 { SDEV_OFFLINE, "offline" },
34 { SDEV_BLOCK, "blocked" },
37 const char *scsi_device_state_name(enum scsi_device_state state)
42 for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
43 if (sdev_states[i].value == state) {
44 name = sdev_states[i].name;
52 enum scsi_host_state value;
55 { SHOST_CREATED, "created" },
56 { SHOST_RUNNING, "running" },
57 { SHOST_CANCEL, "cancel" },
58 { SHOST_DEL, "deleted" },
59 { SHOST_RECOVERY, "recovery" },
60 { SHOST_CANCEL_RECOVERY, "cancel/recovery" },
61 { SHOST_DEL_RECOVERY, "deleted/recovery", },
63 const char *scsi_host_state_name(enum scsi_host_state state)
68 for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
69 if (shost_states[i].value == state) {
70 name = shost_states[i].name;
77 static int check_set(unsigned int *val, char *src)
81 if (strncmp(src, "-", 20) == 0) {
82 *val = SCAN_WILD_CARD;
85 * Doesn't check for int overflow
87 *val = simple_strtoul(src, &last, 0);
94 static int scsi_scan(struct Scsi_Host *shost, const char *str)
96 char s1[15], s2[15], s3[15], junk;
97 unsigned int channel, id, lun;
100 res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk);
103 if (check_set(&channel, s1))
105 if (check_set(&id, s2))
107 if (check_set(&lun, s3))
109 if (shost->transportt->user_scan)
110 res = shost->transportt->user_scan(shost, channel, id, lun);
112 res = scsi_scan_host_selected(shost, channel, id, lun, 1);
117 * shost_show_function: macro to create an attr function that can be used to
118 * show a non-bit field.
120 #define shost_show_function(name, field, format_string) \
122 show_##name (struct class_device *class_dev, char *buf) \
124 struct Scsi_Host *shost = class_to_shost(class_dev); \
125 return snprintf (buf, 20, format_string, shost->field); \
129 * shost_rd_attr: macro to create a function and attribute variable for a
132 #define shost_rd_attr2(name, field, format_string) \
133 shost_show_function(name, field, format_string) \
134 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
136 #define shost_rd_attr(field, format_string) \
137 shost_rd_attr2(field, field, format_string)
140 * Create the actual show/store functions and data structures.
143 static ssize_t store_scan(struct class_device *class_dev, const char *buf,
146 struct Scsi_Host *shost = class_to_shost(class_dev);
149 res = scsi_scan(shost, buf);
154 static CLASS_DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
157 store_shost_state(struct class_device *class_dev, const char *buf, size_t count)
160 struct Scsi_Host *shost = class_to_shost(class_dev);
161 enum scsi_host_state state = 0;
163 for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
164 const int len = strlen(shost_states[i].name);
165 if (strncmp(shost_states[i].name, buf, len) == 0 &&
167 state = shost_states[i].value;
174 if (scsi_host_set_state(shost, state))
180 show_shost_state(struct class_device *class_dev, char *buf)
182 struct Scsi_Host *shost = class_to_shost(class_dev);
183 const char *name = scsi_host_state_name(shost->shost_state);
188 return snprintf(buf, 20, "%s\n", name);
191 static CLASS_DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
193 shost_rd_attr(unique_id, "%u\n");
194 shost_rd_attr(host_busy, "%hu\n");
195 shost_rd_attr(cmd_per_lun, "%hd\n");
196 shost_rd_attr(can_queue, "%hd\n");
197 shost_rd_attr(sg_tablesize, "%hu\n");
198 shost_rd_attr(unchecked_isa_dma, "%d\n");
199 shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
201 static struct class_device_attribute *scsi_sysfs_shost_attrs[] = {
202 &class_device_attr_unique_id,
203 &class_device_attr_host_busy,
204 &class_device_attr_cmd_per_lun,
205 &class_device_attr_can_queue,
206 &class_device_attr_sg_tablesize,
207 &class_device_attr_unchecked_isa_dma,
208 &class_device_attr_proc_name,
209 &class_device_attr_scan,
210 &class_device_attr_state,
214 static void scsi_device_cls_release(struct class_device *class_dev)
216 struct scsi_device *sdev;
218 sdev = class_to_sdev(class_dev);
219 put_device(&sdev->sdev_gendev);
222 static void scsi_device_dev_release_usercontext(struct work_struct *work)
224 struct scsi_device *sdev;
225 struct device *parent;
226 struct scsi_target *starget;
229 sdev = container_of(work, struct scsi_device, ew.work);
231 parent = sdev->sdev_gendev.parent;
232 starget = to_scsi_target(parent);
234 spin_lock_irqsave(sdev->host->host_lock, flags);
236 list_del(&sdev->siblings);
237 list_del(&sdev->same_target_siblings);
238 list_del(&sdev->starved_entry);
239 spin_unlock_irqrestore(sdev->host->host_lock, flags);
241 if (sdev->request_queue) {
242 sdev->request_queue->queuedata = NULL;
243 /* user context needed to free queue */
244 scsi_free_queue(sdev->request_queue);
245 /* temporary expedient, try to catch use of queue lock
246 * after free of sdev */
247 sdev->request_queue = NULL;
250 scsi_target_reap(scsi_target(sdev));
252 kfree(sdev->inquiry);
259 static void scsi_device_dev_release(struct device *dev)
261 struct scsi_device *sdp = to_scsi_device(dev);
262 execute_in_process_context(scsi_device_dev_release_usercontext,
266 static struct class sdev_class = {
267 .name = "scsi_device",
268 .release = scsi_device_cls_release,
271 /* all probing is done in the individual ->probe routines */
272 static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
274 struct scsi_device *sdp = to_scsi_device(dev);
275 if (sdp->no_uld_attach)
277 return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
280 static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
282 struct scsi_device *sdev = to_scsi_device(dev);
284 add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
288 static int scsi_bus_suspend(struct device * dev, pm_message_t state)
290 struct device_driver *drv = dev->driver;
291 struct scsi_device *sdev = to_scsi_device(dev);
294 err = scsi_device_quiesce(sdev);
298 if (drv && drv->suspend) {
299 err = drv->suspend(dev, state);
307 static int scsi_bus_resume(struct device * dev)
309 struct device_driver *drv = dev->driver;
310 struct scsi_device *sdev = to_scsi_device(dev);
313 if (drv && drv->resume)
314 err = drv->resume(dev);
316 scsi_device_resume(sdev);
321 struct bus_type scsi_bus_type = {
323 .match = scsi_bus_match,
324 .uevent = scsi_bus_uevent,
325 .suspend = scsi_bus_suspend,
326 .resume = scsi_bus_resume,
329 int scsi_sysfs_register(void)
333 error = bus_register(&scsi_bus_type);
335 error = class_register(&sdev_class);
337 bus_unregister(&scsi_bus_type);
343 void scsi_sysfs_unregister(void)
345 class_unregister(&sdev_class);
346 bus_unregister(&scsi_bus_type);
350 * sdev_show_function: macro to create an attr function that can be used to
351 * show a non-bit field.
353 #define sdev_show_function(field, format_string) \
355 sdev_show_##field (struct device *dev, struct device_attribute *attr, char *buf) \
357 struct scsi_device *sdev; \
358 sdev = to_scsi_device(dev); \
359 return snprintf (buf, 20, format_string, sdev->field); \
363 * sdev_rd_attr: macro to create a function and attribute variable for a
366 #define sdev_rd_attr(field, format_string) \
367 sdev_show_function(field, format_string) \
368 static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL);
372 * sdev_rd_attr: create a function and attribute variable for a
375 #define sdev_rw_attr(field, format_string) \
376 sdev_show_function(field, format_string) \
379 sdev_store_##field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
381 struct scsi_device *sdev; \
382 sdev = to_scsi_device(dev); \
383 snscanf (buf, 20, format_string, &sdev->field); \
386 static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
388 /* Currently we don't export bit fields, but we might in future,
389 * so leave this code in */
392 * sdev_rd_attr: create a function and attribute variable for a
393 * read/write bit field.
395 #define sdev_rw_attr_bit(field) \
396 sdev_show_function(field, "%d\n") \
399 sdev_store_##field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
402 struct scsi_device *sdev; \
403 ret = scsi_sdev_check_buf_bit(buf); \
405 sdev = to_scsi_device(dev); \
411 static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
414 * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1",
415 * else return -EINVAL.
417 static int scsi_sdev_check_buf_bit(const char *buf)
419 if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
422 else if (buf[0] == '0')
431 * Create the actual show/store functions and data structures.
433 sdev_rd_attr (device_blocked, "%d\n");
434 sdev_rd_attr (queue_depth, "%d\n");
435 sdev_rd_attr (type, "%d\n");
436 sdev_rd_attr (scsi_level, "%d\n");
437 sdev_rd_attr (vendor, "%.8s\n");
438 sdev_rd_attr (model, "%.16s\n");
439 sdev_rd_attr (rev, "%.4s\n");
442 sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf)
444 struct scsi_device *sdev;
445 sdev = to_scsi_device(dev);
446 return snprintf (buf, 20, "%d\n", sdev->timeout / HZ);
450 sdev_store_timeout (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
452 struct scsi_device *sdev;
454 sdev = to_scsi_device(dev);
455 sscanf (buf, "%d\n", &timeout);
456 sdev->timeout = timeout * HZ;
459 static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);
462 store_rescan_field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
464 scsi_rescan_device(dev);
467 static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
469 static void sdev_store_delete_callback(struct device *dev)
471 scsi_remove_device(to_scsi_device(dev));
474 static ssize_t sdev_store_delete(struct device *dev, struct device_attribute *attr, const char *buf,
479 /* An attribute cannot be unregistered by one of its own methods,
480 * so we have to use this roundabout approach.
482 rc = device_schedule_callback(dev, sdev_store_delete_callback);
487 static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
490 store_state_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
493 struct scsi_device *sdev = to_scsi_device(dev);
494 enum scsi_device_state state = 0;
496 for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
497 const int len = strlen(sdev_states[i].name);
498 if (strncmp(sdev_states[i].name, buf, len) == 0 &&
500 state = sdev_states[i].value;
507 if (scsi_device_set_state(sdev, state))
513 show_state_field(struct device *dev, struct device_attribute *attr, char *buf)
515 struct scsi_device *sdev = to_scsi_device(dev);
516 const char *name = scsi_device_state_name(sdev->sdev_state);
521 return snprintf(buf, 20, "%s\n", name);
524 static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field);
527 show_queue_type_field(struct device *dev, struct device_attribute *attr, char *buf)
529 struct scsi_device *sdev = to_scsi_device(dev);
530 const char *name = "none";
532 if (sdev->ordered_tags)
534 else if (sdev->simple_tags)
537 return snprintf(buf, 20, "%s\n", name);
540 static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL);
543 show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf)
545 return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8);
548 static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL);
550 #define show_sdev_iostat(field) \
552 show_iostat_##field(struct device *dev, struct device_attribute *attr, char *buf) \
554 struct scsi_device *sdev = to_scsi_device(dev); \
555 unsigned long long count = atomic_read(&sdev->field); \
556 return snprintf(buf, 20, "0x%llx\n", count); \
558 static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
560 show_sdev_iostat(iorequest_cnt);
561 show_sdev_iostat(iodone_cnt);
562 show_sdev_iostat(ioerr_cnt);
565 sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
567 struct scsi_device *sdev;
568 sdev = to_scsi_device(dev);
569 return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type);
571 static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL);
573 /* Default template for device attributes. May NOT be modified */
574 static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
575 &dev_attr_device_blocked,
576 &dev_attr_queue_depth,
577 &dev_attr_queue_type,
579 &dev_attr_scsi_level,
587 &dev_attr_iocounterbits,
588 &dev_attr_iorequest_cnt,
589 &dev_attr_iodone_cnt,
595 static ssize_t sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, const char *buf,
599 struct scsi_device *sdev = to_scsi_device(dev);
600 struct scsi_host_template *sht = sdev->host->hostt;
602 if (!sht->change_queue_depth)
605 depth = simple_strtoul(buf, NULL, 0);
610 retval = sht->change_queue_depth(sdev, depth);
617 static struct device_attribute sdev_attr_queue_depth_rw =
618 __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth,
619 sdev_store_queue_depth_rw);
621 static ssize_t sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, const char *buf,
624 struct scsi_device *sdev = to_scsi_device(dev);
625 struct scsi_host_template *sht = sdev->host->hostt;
626 int tag_type = 0, retval;
627 int prev_tag_type = scsi_get_tag_type(sdev);
629 if (!sdev->tagged_supported || !sht->change_queue_type)
632 if (strncmp(buf, "ordered", 7) == 0)
633 tag_type = MSG_ORDERED_TAG;
634 else if (strncmp(buf, "simple", 6) == 0)
635 tag_type = MSG_SIMPLE_TAG;
636 else if (strncmp(buf, "none", 4) != 0)
639 if (tag_type == prev_tag_type)
642 retval = sht->change_queue_type(sdev, tag_type);
649 static struct device_attribute sdev_attr_queue_type_rw =
650 __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
651 sdev_store_queue_type_rw);
653 static struct device_attribute *attr_changed_internally(
654 struct Scsi_Host *shost,
655 struct device_attribute * attr)
657 if (!strcmp("queue_depth", attr->attr.name)
658 && shost->hostt->change_queue_depth)
659 return &sdev_attr_queue_depth_rw;
660 else if (!strcmp("queue_type", attr->attr.name)
661 && shost->hostt->change_queue_type)
662 return &sdev_attr_queue_type_rw;
667 static struct device_attribute *attr_overridden(
668 struct device_attribute **attrs,
669 struct device_attribute *attr)
675 for (i = 0; attrs[i]; i++)
676 if (!strcmp(attrs[i]->attr.name, attr->attr.name))
681 static int attr_add(struct device *dev, struct device_attribute *attr)
683 struct device_attribute *base_attr;
686 * Spare the caller from having to copy things it's not interested in.
688 base_attr = attr_overridden(scsi_sysfs_sdev_attrs, attr);
690 /* extend permissions */
691 attr->attr.mode |= base_attr->attr.mode;
693 /* override null show/store with default */
695 attr->show = base_attr->show;
697 attr->store = base_attr->store;
700 return device_create_file(dev, attr);
704 * scsi_sysfs_add_sdev - add scsi device to sysfs
705 * @sdev: scsi_device to add
708 * 0 on Success / non-zero on Failure
710 int scsi_sysfs_add_sdev(struct scsi_device *sdev)
713 struct request_queue *rq = sdev->request_queue;
715 if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0)
718 error = device_add(&sdev->sdev_gendev);
720 put_device(sdev->sdev_gendev.parent);
721 printk(KERN_INFO "error 1\n");
724 error = class_device_add(&sdev->sdev_classdev);
726 printk(KERN_INFO "error 2\n");
730 /* take a reference for the sdev_classdev; this is
731 * released by the sdev_class .release */
732 get_device(&sdev->sdev_gendev);
734 error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL);
737 sdev_printk(KERN_INFO, sdev,
738 "Failed to register bsg queue, errno=%d\n", error);
740 /* we're treating error on bsg register as non-fatal, so pretend
741 * nothing went wrong */
744 if (sdev->host->hostt->sdev_attrs) {
745 for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) {
746 error = attr_add(&sdev->sdev_gendev,
747 sdev->host->hostt->sdev_attrs[i]);
749 __scsi_remove_device(sdev);
755 for (i = 0; scsi_sysfs_sdev_attrs[i]; i++) {
756 if (!attr_overridden(sdev->host->hostt->sdev_attrs,
757 scsi_sysfs_sdev_attrs[i])) {
758 struct device_attribute * attr =
759 attr_changed_internally(sdev->host,
760 scsi_sysfs_sdev_attrs[i]);
761 error = device_create_file(&sdev->sdev_gendev, attr);
763 __scsi_remove_device(sdev);
769 transport_add_device(&sdev->sdev_gendev);
774 scsi_device_set_state(sdev, SDEV_CANCEL);
776 device_del(&sdev->sdev_gendev);
777 transport_destroy_device(&sdev->sdev_gendev);
778 put_device(&sdev->sdev_gendev);
783 void __scsi_remove_device(struct scsi_device *sdev)
785 struct device *dev = &sdev->sdev_gendev;
787 if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
790 bsg_unregister_queue(sdev->request_queue);
791 class_device_unregister(&sdev->sdev_classdev);
792 transport_remove_device(dev);
794 scsi_device_set_state(sdev, SDEV_DEL);
795 if (sdev->host->hostt->slave_destroy)
796 sdev->host->hostt->slave_destroy(sdev);
797 transport_destroy_device(dev);
802 * scsi_remove_device - unregister a device from the scsi bus
803 * @sdev: scsi_device to unregister
805 void scsi_remove_device(struct scsi_device *sdev)
807 struct Scsi_Host *shost = sdev->host;
809 mutex_lock(&shost->scan_mutex);
810 __scsi_remove_device(sdev);
811 mutex_unlock(&shost->scan_mutex);
813 EXPORT_SYMBOL(scsi_remove_device);
815 static void __scsi_remove_target(struct scsi_target *starget)
817 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
819 struct scsi_device *sdev;
821 spin_lock_irqsave(shost->host_lock, flags);
824 list_for_each_entry(sdev, &shost->__devices, siblings) {
825 if (sdev->channel != starget->channel ||
826 sdev->id != starget->id ||
827 sdev->sdev_state == SDEV_DEL)
829 spin_unlock_irqrestore(shost->host_lock, flags);
830 scsi_remove_device(sdev);
831 spin_lock_irqsave(shost->host_lock, flags);
834 spin_unlock_irqrestore(shost->host_lock, flags);
835 scsi_target_reap(starget);
838 static int __remove_child (struct device * dev, void * data)
840 if (scsi_is_target_device(dev))
841 __scsi_remove_target(to_scsi_target(dev));
846 * scsi_remove_target - try to remove a target and all its devices
847 * @dev: generic starget or parent of generic stargets to be removed
849 * Note: This is slightly racy. It is possible that if the user
850 * requests the addition of another device then the target won't be
853 void scsi_remove_target(struct device *dev)
857 if (scsi_is_target_device(dev)) {
858 __scsi_remove_target(to_scsi_target(dev));
862 rdev = get_device(dev);
863 device_for_each_child(dev, NULL, __remove_child);
866 EXPORT_SYMBOL(scsi_remove_target);
868 int scsi_register_driver(struct device_driver *drv)
870 drv->bus = &scsi_bus_type;
872 return driver_register(drv);
874 EXPORT_SYMBOL(scsi_register_driver);
876 int scsi_register_interface(struct class_interface *intf)
878 intf->class = &sdev_class;
880 return class_interface_register(intf);
882 EXPORT_SYMBOL(scsi_register_interface);
885 static struct class_device_attribute *class_attr_overridden(
886 struct class_device_attribute **attrs,
887 struct class_device_attribute *attr)
893 for (i = 0; attrs[i]; i++)
894 if (!strcmp(attrs[i]->attr.name, attr->attr.name))
899 static int class_attr_add(struct class_device *classdev,
900 struct class_device_attribute *attr)
902 struct class_device_attribute *base_attr;
905 * Spare the caller from having to copy things it's not interested in.
907 base_attr = class_attr_overridden(scsi_sysfs_shost_attrs, attr);
909 /* extend permissions */
910 attr->attr.mode |= base_attr->attr.mode;
912 /* override null show/store with default */
914 attr->show = base_attr->show;
916 attr->store = base_attr->store;
919 return class_device_create_file(classdev, attr);
923 * scsi_sysfs_add_host - add scsi host to subsystem
924 * @shost: scsi host struct to add to subsystem
925 * @dev: parent struct device pointer
927 int scsi_sysfs_add_host(struct Scsi_Host *shost)
931 if (shost->hostt->shost_attrs) {
932 for (i = 0; shost->hostt->shost_attrs[i]; i++) {
933 error = class_attr_add(&shost->shost_classdev,
934 shost->hostt->shost_attrs[i]);
940 for (i = 0; scsi_sysfs_shost_attrs[i]; i++) {
941 if (!class_attr_overridden(shost->hostt->shost_attrs,
942 scsi_sysfs_shost_attrs[i])) {
943 error = class_device_create_file(&shost->shost_classdev,
944 scsi_sysfs_shost_attrs[i]);
950 transport_register_device(&shost->shost_gendev);
954 void scsi_sysfs_device_initialize(struct scsi_device *sdev)
957 struct Scsi_Host *shost = sdev->host;
958 struct scsi_target *starget = sdev->sdev_target;
960 device_initialize(&sdev->sdev_gendev);
961 sdev->sdev_gendev.bus = &scsi_bus_type;
962 sdev->sdev_gendev.release = scsi_device_dev_release;
963 sprintf(sdev->sdev_gendev.bus_id,"%d:%d:%d:%d",
964 sdev->host->host_no, sdev->channel, sdev->id,
967 class_device_initialize(&sdev->sdev_classdev);
968 sdev->sdev_classdev.dev = &sdev->sdev_gendev;
969 sdev->sdev_classdev.class = &sdev_class;
970 snprintf(sdev->sdev_classdev.class_id, BUS_ID_SIZE,
971 "%d:%d:%d:%d", sdev->host->host_no,
972 sdev->channel, sdev->id, sdev->lun);
973 sdev->scsi_level = starget->scsi_level;
974 transport_setup_device(&sdev->sdev_gendev);
975 spin_lock_irqsave(shost->host_lock, flags);
976 list_add_tail(&sdev->same_target_siblings, &starget->devices);
977 list_add_tail(&sdev->siblings, &shost->__devices);
978 spin_unlock_irqrestore(shost->host_lock, flags);
981 int scsi_is_sdev_device(const struct device *dev)
983 return dev->release == scsi_device_dev_release;
985 EXPORT_SYMBOL(scsi_is_sdev_device);
987 /* A blank transport template that is used in drivers that don't
988 * yet implement Transport Attributes */
989 struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, };