160 	struct scsi_device *sdev = cmd->device;  in scsi_finish_command()  local
161 	struct scsi_target *starget = scsi_target(sdev);  in scsi_finish_command()
162 	struct Scsi_Host *shost = sdev->host;  in scsi_finish_command()
166 	scsi_device_unbusy(sdev, cmd);  in scsi_finish_command()
176 	if (atomic_read(&sdev->device_blocked))  in scsi_finish_command()
177 		atomic_set(&sdev->device_blocked, 0);  in scsi_finish_command()
179 	SCSI_LOG_MLCOMPLETE(4, sdev_printk(KERN_INFO, sdev,  in scsi_finish_command()
205 int scsi_device_max_queue_depth(struct scsi_device *sdev)  in scsi_device_max_queue_depth()  argument
207 	return min_t(int, sdev->host->can_queue, 4096);  in scsi_device_max_queue_depth()
217 int scsi_change_queue_depth(struct scsi_device *sdev, int depth)  in scsi_change_queue_depth()  argument
219 	depth = min_t(int, depth, scsi_device_max_queue_depth(sdev));  in scsi_change_queue_depth()
222 		sdev->queue_depth = depth;  in scsi_change_queue_depth()
226 	if (sdev->request_queue)  in scsi_change_queue_depth()
227 		blk_set_queue_depth(sdev->request_queue, depth);  in scsi_change_queue_depth()
229 	sbitmap_resize(&sdev->budget_map, sdev->queue_depth);  in scsi_change_queue_depth()
231 	return sdev->queue_depth;  in scsi_change_queue_depth()
254 int scsi_track_queue_full(struct scsi_device *sdev, int depth)  in scsi_track_queue_full()  argument
262 	if ((jiffies >> 4) == (sdev->last_queue_full_time >> 4))  in scsi_track_queue_full()
265 	sdev->last_queue_full_time = jiffies;  in scsi_track_queue_full()
266 	if (sdev->last_queue_full_depth != depth) {  in scsi_track_queue_full()
267 		sdev->last_queue_full_count = 1;  in scsi_track_queue_full()
268 		sdev->last_queue_full_depth = depth;  in scsi_track_queue_full()
270 		sdev->last_queue_full_count++;  in scsi_track_queue_full()
273 	if (sdev->last_queue_full_count <= 10)  in scsi_track_queue_full()
276 	return scsi_change_queue_depth(sdev, depth);  in scsi_track_queue_full()
292 static int scsi_vpd_inquiry(struct scsi_device *sdev, unsigned char *buffer,  in scsi_vpd_inquiry()  argument
312 	result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buffer, len,  in scsi_vpd_inquiry()
331 static int scsi_get_vpd_size(struct scsi_device *sdev, u8 page)  in scsi_get_vpd_size()  argument
336 	if (sdev->no_vpd_size)  in scsi_get_vpd_size()
345 	result = scsi_vpd_inquiry(sdev, vpd_header, page, sizeof(vpd_header));  in scsi_get_vpd_size()
350 		dev_warn_once(&sdev->sdev_gendev,  in scsi_get_vpd_size()
372 int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf,  in scsi_get_vpd_page()  argument
377 	if (!scsi_device_supports_vpd(sdev))  in scsi_get_vpd_page()
380 	vpd_len = scsi_get_vpd_size(sdev, page);  in scsi_get_vpd_page()
391 	result = scsi_vpd_inquiry(sdev, buf, page, vpd_len);  in scsi_get_vpd_page()
395 		dev_warn_once(&sdev->sdev_gendev,  in scsi_get_vpd_page()
410 static struct scsi_vpd *scsi_get_vpd_buf(struct scsi_device *sdev, u8 page)  in scsi_get_vpd_buf()  argument
415 	vpd_len = scsi_get_vpd_size(sdev, page);  in scsi_get_vpd_buf()
428 	result = scsi_vpd_inquiry(sdev, vpd_buf->data, page, vpd_len);  in scsi_get_vpd_buf()
434 		dev_warn_once(&sdev->sdev_gendev,  in scsi_get_vpd_buf()
447 static void scsi_update_vpd_page(struct scsi_device *sdev, u8 page,  in scsi_update_vpd_page()  argument
452 	vpd_buf = scsi_get_vpd_buf(sdev, page);  in scsi_update_vpd_page()
456 	mutex_lock(&sdev->inquiry_mutex);  in scsi_update_vpd_page()
458 				      lockdep_is_held(&sdev->inquiry_mutex));  in scsi_update_vpd_page()
459 	mutex_unlock(&sdev->inquiry_mutex);  in scsi_update_vpd_page()
474 void scsi_attach_vpd(struct scsi_device *sdev)  in scsi_attach_vpd()  argument
479 	if (!scsi_device_supports_vpd(sdev))  in scsi_attach_vpd()
483 	vpd_buf = scsi_get_vpd_buf(sdev, 0);  in scsi_attach_vpd()
489 			scsi_update_vpd_page(sdev, 0x0, &sdev->vpd_pg0);  in scsi_attach_vpd()
491 			scsi_update_vpd_page(sdev, 0x80, &sdev->vpd_pg80);  in scsi_attach_vpd()
493 			scsi_update_vpd_page(sdev, 0x83, &sdev->vpd_pg83);  in scsi_attach_vpd()
495 			scsi_update_vpd_page(sdev, 0x89, &sdev->vpd_pg89);  in scsi_attach_vpd()
497 			scsi_update_vpd_page(sdev, 0xb0, &sdev->vpd_pgb0);  in scsi_attach_vpd()
499 			scsi_update_vpd_page(sdev, 0xb1, &sdev->vpd_pgb1);  in scsi_attach_vpd()
501 			scsi_update_vpd_page(sdev, 0xb2, &sdev->vpd_pgb2);  in scsi_attach_vpd()
520 int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,  in scsi_report_opcode()  argument
531 	if (sdev->no_report_opcodes || sdev->scsi_level < SCSI_SPC_3)  in scsi_report_opcode()
537 		dev_warn_once(&sdev->sdev_gendev,  in scsi_report_opcode()
557 	result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buffer,  in scsi_report_opcode()
575 static bool scsi_cdl_check_cmd(struct scsi_device *sdev, u8 opcode, u16 sa,  in scsi_cdl_check_cmd()  argument
582 	ret = scsi_report_opcode(sdev, buf, SCSI_CDL_CHECK_BUF_LEN, opcode, sa);  in scsi_cdl_check_cmd()
611 void scsi_cdl_check(struct scsi_device *sdev)  in scsi_cdl_check()  argument
622 	if (sdev->scsi_level < SCSI_SPC_5) {  in scsi_cdl_check()
623 		sdev->cdl_supported = 0;  in scsi_cdl_check()
629 		sdev->cdl_supported = 0;  in scsi_cdl_check()
635 		scsi_cdl_check_cmd(sdev, READ_16, 0, buf) ||  in scsi_cdl_check()
636 		scsi_cdl_check_cmd(sdev, WRITE_16, 0, buf) ||  in scsi_cdl_check()
637 		scsi_cdl_check_cmd(sdev, VARIABLE_LENGTH_CMD, READ_32, buf) ||  in scsi_cdl_check()
638 		scsi_cdl_check_cmd(sdev, VARIABLE_LENGTH_CMD, WRITE_32, buf);  in scsi_cdl_check()
645 		sdev->use_16_for_rw = 1;  in scsi_cdl_check()
646 		sdev->use_10_for_rw = 0;  in scsi_cdl_check()
648 		sdev->cdl_supported = 1;  in scsi_cdl_check()
650 		sdev->cdl_supported = 0;  in scsi_cdl_check()
662 int scsi_cdl_enable(struct scsi_device *sdev, bool enable)  in scsi_cdl_enable()  argument
671 	if (!sdev->cdl_supported)  in scsi_cdl_enable()
675 	vpd = rcu_dereference(sdev->vpd_pg89);  in scsi_cdl_enable()
687 		ret = scsi_mode_sense(sdev, 0x08, 0x0a, 0xf2, buf, sizeof(buf),  in scsi_cdl_enable()
703 		ret = scsi_mode_select(sdev, 1, 0, buf_data, len, 5 * HZ, 3,  in scsi_cdl_enable()
707 				scsi_print_sense_hdr(sdev,  in scsi_cdl_enable()
708 					dev_name(&sdev->sdev_gendev), &sshdr);  in scsi_cdl_enable()
713 	sdev->cdl_enable = enable;  in scsi_cdl_enable()
729 int scsi_device_get(struct scsi_device *sdev)  in scsi_device_get()  argument
731 	if (sdev->sdev_state == SDEV_DEL || sdev->sdev_state == SDEV_CANCEL)  in scsi_device_get()
733 	if (!try_module_get(sdev->host->hostt->module))  in scsi_device_get()
735 	if (!get_device(&sdev->sdev_gendev))  in scsi_device_get()
740 	module_put(sdev->host->hostt->module);  in scsi_device_get()
754 void scsi_device_put(struct scsi_device *sdev)  in scsi_device_put()  argument
756 	struct module *mod = sdev->host->hostt->module;  in scsi_device_put()
758 	put_device(&sdev->sdev_gendev);  in scsi_device_put()
802 	struct scsi_device *sdev;  in starget_for_each_device()  local
804 	shost_for_each_device(sdev, shost) {  in starget_for_each_device()
805 		if ((sdev->channel == starget->channel) &&  in starget_for_each_device()
806 		    (sdev->id == starget->id))  in starget_for_each_device()
807 			fn(sdev, data);  in starget_for_each_device()
830 	struct scsi_device *sdev;  in __starget_for_each_device()  local
832 	__shost_for_each_device(sdev, shost) {  in __starget_for_each_device()
833 		if ((sdev->channel == starget->channel) &&  in __starget_for_each_device()
834 		    (sdev->id == starget->id))  in __starget_for_each_device()
835 			fn(sdev, data);  in __starget_for_each_device()
858 	struct scsi_device *sdev;  in __scsi_device_lookup_by_target()  local
860 	list_for_each_entry(sdev, &starget->devices, same_target_siblings) {  in __scsi_device_lookup_by_target()
861 		if (sdev->sdev_state == SDEV_DEL)  in __scsi_device_lookup_by_target()
863 		if (sdev->lun ==lun)  in __scsi_device_lookup_by_target()
864 			return sdev;  in __scsi_device_lookup_by_target()
883 	struct scsi_device *sdev;  in scsi_device_lookup_by_target()  local
888 	sdev = __scsi_device_lookup_by_target(starget, lun);  in scsi_device_lookup_by_target()
889 	if (sdev && scsi_device_get(sdev))  in scsi_device_lookup_by_target()
890 		sdev = NULL;  in scsi_device_lookup_by_target()
893 	return sdev;  in scsi_device_lookup_by_target()
916 	struct scsi_device *sdev;  in __scsi_device_lookup()  local
918 	list_for_each_entry(sdev, &shost->__devices, siblings) {  in __scsi_device_lookup()
919 		if (sdev->sdev_state == SDEV_DEL)  in __scsi_device_lookup()
921 		if (sdev->channel == channel && sdev->id == id &&  in __scsi_device_lookup()
922 				sdev->lun ==lun)  in __scsi_device_lookup()
923 			return sdev;  in __scsi_device_lookup()
944 	struct scsi_device *sdev;  in scsi_device_lookup()  local
948 	sdev = __scsi_device_lookup(shost, channel, id, lun);  in scsi_device_lookup()
949 	if (sdev && scsi_device_get(sdev))  in scsi_device_lookup()
950 		sdev = NULL;  in scsi_device_lookup()
953 	return sdev;  in scsi_device_lookup()