201 static void scsi_unlock_floptical(struct scsi_device *sdev,  in scsi_unlock_floptical()  argument
206 	sdev_printk(KERN_NOTICE, sdev, "unlocking floptical drive\n");  in scsi_unlock_floptical()
213 	scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN, result, 0x2a,  in scsi_unlock_floptical()
217 static int scsi_realloc_sdev_budget_map(struct scsi_device *sdev,  in scsi_realloc_sdev_budget_map()  argument
221 	bool need_alloc = !sdev->budget_map.map;  in scsi_realloc_sdev_budget_map()
226 	depth = min_t(unsigned int, depth, scsi_device_max_queue_depth(sdev));  in scsi_realloc_sdev_budget_map()
232 	if (!need_alloc && new_shift != sdev->budget_map.shift)  in scsi_realloc_sdev_budget_map()
243 		blk_mq_freeze_queue(sdev->request_queue);  in scsi_realloc_sdev_budget_map()
244 		sb_backup = sdev->budget_map;  in scsi_realloc_sdev_budget_map()
246 	ret = sbitmap_init_node(&sdev->budget_map,  in scsi_realloc_sdev_budget_map()
247 				scsi_device_max_queue_depth(sdev),  in scsi_realloc_sdev_budget_map()
249 				sdev->request_queue->node, false, true);  in scsi_realloc_sdev_budget_map()
251 		sbitmap_resize(&sdev->budget_map, depth);  in scsi_realloc_sdev_budget_map()
255 			sdev->budget_map = sb_backup;  in scsi_realloc_sdev_budget_map()
259 		blk_mq_unfreeze_queue(sdev->request_queue);  in scsi_realloc_sdev_budget_map()
282 	struct scsi_device *sdev;  in scsi_alloc_sdev()  local
287 	sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,  in scsi_alloc_sdev()
289 	if (!sdev)  in scsi_alloc_sdev()
292 	sdev->vendor = scsi_null_device_strs;  in scsi_alloc_sdev()
293 	sdev->model = scsi_null_device_strs;  in scsi_alloc_sdev()
294 	sdev->rev = scsi_null_device_strs;  in scsi_alloc_sdev()
295 	sdev->host = shost;  in scsi_alloc_sdev()
296 	sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD;  in scsi_alloc_sdev()
297 	sdev->id = starget->id;  in scsi_alloc_sdev()
298 	sdev->lun = lun;  in scsi_alloc_sdev()
299 	sdev->channel = starget->channel;  in scsi_alloc_sdev()
300 	mutex_init(&sdev->state_mutex);  in scsi_alloc_sdev()
301 	sdev->sdev_state = SDEV_CREATED;  in scsi_alloc_sdev()
302 	INIT_LIST_HEAD(&sdev->siblings);  in scsi_alloc_sdev()
303 	INIT_LIST_HEAD(&sdev->same_target_siblings);  in scsi_alloc_sdev()
304 	INIT_LIST_HEAD(&sdev->starved_entry);  in scsi_alloc_sdev()
305 	INIT_LIST_HEAD(&sdev->event_list);  in scsi_alloc_sdev()
306 	spin_lock_init(&sdev->list_lock);  in scsi_alloc_sdev()
307 	mutex_init(&sdev->inquiry_mutex);  in scsi_alloc_sdev()
308 	INIT_WORK(&sdev->event_work, scsi_evt_thread);  in scsi_alloc_sdev()
309 	INIT_WORK(&sdev->requeue_work, scsi_requeue_run_queue);  in scsi_alloc_sdev()
311 	sdev->sdev_gendev.parent = get_device(&starget->dev);  in scsi_alloc_sdev()
312 	sdev->sdev_target = starget;  in scsi_alloc_sdev()
315 	sdev->hostdata = hostdata;  in scsi_alloc_sdev()
319 	sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED;  in scsi_alloc_sdev()
324 	sdev->type = -1;  in scsi_alloc_sdev()
331 	sdev->borken = 1;  in scsi_alloc_sdev()
333 	sdev->sg_reserved_size = INT_MAX;  in scsi_alloc_sdev()
335 	q = blk_mq_init_queue(&sdev->host->tag_set);  in scsi_alloc_sdev()
340 		kfree(sdev);  in scsi_alloc_sdev()
343 	kref_get(&sdev->host->tagset_refcnt);  in scsi_alloc_sdev()
344 	sdev->request_queue = q;  in scsi_alloc_sdev()
345 	q->queuedata = sdev;  in scsi_alloc_sdev()
346 	__scsi_init_queue(sdev->host, q);  in scsi_alloc_sdev()
348 	depth = sdev->host->cmd_per_lun ?: 1;  in scsi_alloc_sdev()
356 	if (scsi_realloc_sdev_budget_map(sdev, depth)) {  in scsi_alloc_sdev()
358 		kfree(sdev);  in scsi_alloc_sdev()
362 	scsi_change_queue_depth(sdev, depth);  in scsi_alloc_sdev()
364 	scsi_sysfs_device_initialize(sdev);  in scsi_alloc_sdev()
367 		ret = shost->hostt->slave_alloc(sdev);  in scsi_alloc_sdev()
379 	return sdev;  in scsi_alloc_sdev()
382 	__scsi_remove_device(sdev);  in scsi_alloc_sdev()
643 static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_probe_lun()  argument
661 	first_inquiry_len = sdev->inquiry_len ? sdev->inquiry_len : 36;  in scsi_probe_lun()
666 	SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
678 		result = scsi_execute_cmd(sdev,  scsi_cmd, REQ_OP_DRV_IN,  in scsi_probe_lun()
683 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
730 		*bflags = scsi_get_device_flags(sdev, &inq_result[8],  in scsi_probe_lun()
746 			else if (sdev->inquiry_len &&  in scsi_probe_lun()
747 				 response_len > sdev->inquiry_len &&  in scsi_probe_lun()
749 				next_inquiry_len = sdev->inquiry_len;  in scsi_probe_lun()
762 		sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
780 	sdev->inquiry_len = min(try_inquiry_len, response_len);  in scsi_probe_lun()
797 	if (sdev->inquiry_len < 36) {  in scsi_probe_lun()
798 		if (!sdev->host->short_inquiry) {  in scsi_probe_lun()
799 			shost_printk(KERN_INFO, sdev->host,  in scsi_probe_lun()
801 				    " using 36\n", sdev->inquiry_len);  in scsi_probe_lun()
802 			sdev->host->short_inquiry = 1;  in scsi_probe_lun()
804 		sdev->inquiry_len = 36;  in scsi_probe_lun()
825 	sdev->scsi_level = inq_result[2] & 0x0f;  in scsi_probe_lun()
826 	if (sdev->scsi_level >= 2 ||  in scsi_probe_lun()
827 	    (sdev->scsi_level == 1 && (inq_result[3] & 0x0f) == 1))  in scsi_probe_lun()
828 		sdev->scsi_level++;  in scsi_probe_lun()
829 	sdev->sdev_target->scsi_level = sdev->scsi_level;  in scsi_probe_lun()
835 	sdev->lun_in_cdb = 0;  in scsi_probe_lun()
836 	if (sdev->scsi_level <= SCSI_2 &&  in scsi_probe_lun()
837 	    sdev->scsi_level != SCSI_UNKNOWN &&  in scsi_probe_lun()
838 	    !sdev->host->no_scsi2_lun_in_cdb)  in scsi_probe_lun()
839 		sdev->lun_in_cdb = 1;  in scsi_probe_lun()
859 static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_add_lun()  argument
884 	sdev->inquiry = kmemdup(inq_result,  in scsi_add_lun()
885 				max_t(size_t, sdev->inquiry_len, 36),  in scsi_add_lun()
887 	if (sdev->inquiry == NULL)  in scsi_add_lun()
890 	sdev->vendor = (char *) (sdev->inquiry + 8);  in scsi_add_lun()
891 	sdev->model = (char *) (sdev->inquiry + 16);  in scsi_add_lun()
892 	sdev->rev = (char *) (sdev->inquiry + 32);  in scsi_add_lun()
894 	if (strncmp(sdev->vendor, "ATA     ", 8) == 0) {  in scsi_add_lun()
901 		sdev->allow_restart = 1;  in scsi_add_lun()
905 		sdev->type = TYPE_ROM;  in scsi_add_lun()
906 		sdev->removable = 1;  in scsi_add_lun()
908 		sdev->type = (inq_result[0] & 0x1f);  in scsi_add_lun()
909 		sdev->removable = (inq_result[1] & 0x80) >> 7;  in scsi_add_lun()
916 		if (scsi_is_wlun(sdev->lun) && sdev->type != TYPE_WLUN) {  in scsi_add_lun()
917 			sdev_printk(KERN_WARNING, sdev,  in scsi_add_lun()
919 				__func__, sdev->type, (unsigned int)sdev->lun);  in scsi_add_lun()
920 			sdev->type = TYPE_WLUN;  in scsi_add_lun()
925 	if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) {  in scsi_add_lun()
950 	sdev->inq_periph_qual = (inq_result[0] >> 5) & 7;  in scsi_add_lun()
951 	sdev->lockable = sdev->removable;  in scsi_add_lun()
952 	sdev->soft_reset = (inq_result[7] & 1) && ((inq_result[3] & 7) == 2);  in scsi_add_lun()
954 	if (sdev->scsi_level >= SCSI_3 ||  in scsi_add_lun()
955 			(sdev->inquiry_len > 56 && inq_result[56] & 0x04))  in scsi_add_lun()
956 		sdev->ppr = 1;  in scsi_add_lun()
958 		sdev->wdtr = 1;  in scsi_add_lun()
960 		sdev->sdtr = 1;  in scsi_add_lun()
962 	sdev_printk(KERN_NOTICE, sdev, "%s %.8s %.16s %.4s PQ: %d "  in scsi_add_lun()
963 			"ANSI: %d%s\n", scsi_device_type(sdev->type),  in scsi_add_lun()
964 			sdev->vendor, sdev->model, sdev->rev,  in scsi_add_lun()
965 			sdev->inq_periph_qual, inq_result[2] & 0x07,  in scsi_add_lun()
968 	if ((sdev->scsi_level >= SCSI_2) && (inq_result[7] & 2) &&  in scsi_add_lun()
970 		sdev->tagged_supported = 1;  in scsi_add_lun()
971 		sdev->simple_tags = 1;  in scsi_add_lun()
980 		sdev->borken = 0;  in scsi_add_lun()
983 		sdev->no_uld_attach = 1;  in scsi_add_lun()
990 		sdev->select_no_atn = 1;  in scsi_add_lun()
997 		blk_queue_max_hw_sectors(sdev->request_queue, 512);  in scsi_add_lun()
1003 		blk_queue_max_hw_sectors(sdev->request_queue, 1024);  in scsi_add_lun()
1010 		sdev->no_start_on_add = 1;  in scsi_add_lun()
1013 		scsi_target(sdev)->single_lun = 1;  in scsi_add_lun()
1015 	sdev->use_10_for_rw = 1;  in scsi_add_lun()
1021 		sdev->no_report_opcodes = 1;  in scsi_add_lun()
1025 	mutex_lock(&sdev->state_mutex);  in scsi_add_lun()
1026 	ret = scsi_device_set_state(sdev, SDEV_RUNNING);  in scsi_add_lun()
1028 		ret = scsi_device_set_state(sdev, SDEV_BLOCK);  in scsi_add_lun()
1029 	mutex_unlock(&sdev->state_mutex);  in scsi_add_lun()
1032 		sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
1034 			    scsi_device_state_name(sdev->sdev_state));  in scsi_add_lun()
1039 		sdev->lockable = 0;  in scsi_add_lun()
1042 		sdev->retry_hwerror = 1;  in scsi_add_lun()
1045 		sdev->no_dif = 1;  in scsi_add_lun()
1048 		sdev->unmap_limit_for_ws = 1;  in scsi_add_lun()
1051 		sdev->ignore_media_change = 1;  in scsi_add_lun()
1053 	sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;  in scsi_add_lun()
1056 		sdev->try_vpd_pages = 1;  in scsi_add_lun()
1058 		sdev->skip_vpd_pages = 1;  in scsi_add_lun()
1061 		sdev->no_vpd_size = 1;  in scsi_add_lun()
1063 	transport_configure_device(&sdev->sdev_gendev);  in scsi_add_lun()
1065 	if (sdev->host->hostt->slave_configure) {  in scsi_add_lun()
1066 		ret = sdev->host->hostt->slave_configure(sdev);  in scsi_add_lun()
1073 				sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
1084 		scsi_realloc_sdev_budget_map(sdev, sdev->queue_depth);  in scsi_add_lun()
1087 	if (sdev->scsi_level >= SCSI_3)  in scsi_add_lun()
1088 		scsi_attach_vpd(sdev);  in scsi_add_lun()
1090 	scsi_cdl_check(sdev);  in scsi_add_lun()
1092 	sdev->max_queue_depth = sdev->queue_depth;  in scsi_add_lun()
1093 	WARN_ON_ONCE(sdev->max_queue_depth > sdev->budget_map.depth);  in scsi_add_lun()
1094 	sdev->sdev_bflags = *bflags;  in scsi_add_lun()
1101 	if (!async && scsi_sysfs_add_sdev(sdev) != 0)  in scsi_add_lun()
1160 	struct scsi_device *sdev;  in scsi_probe_and_add_lun()  local
1170 	sdev = scsi_device_lookup_by_target(starget, lun);  in scsi_probe_and_add_lun()
1171 	if (sdev) {  in scsi_probe_and_add_lun()
1172 		if (rescan != SCSI_SCAN_INITIAL || !scsi_device_created(sdev)) {  in scsi_probe_and_add_lun()
1173 			SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1175 				dev_name(&sdev->sdev_gendev)));  in scsi_probe_and_add_lun()
1177 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1179 				scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1182 				*bflagsp = scsi_get_device_flags(sdev,  in scsi_probe_and_add_lun()
1183 								 sdev->vendor,  in scsi_probe_and_add_lun()
1184 								 sdev->model);  in scsi_probe_and_add_lun()
1187 		scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1189 		sdev = scsi_alloc_sdev(starget, lun, hostdata);  in scsi_probe_and_add_lun()
1190 	if (!sdev)  in scsi_probe_and_add_lun()
1197 	if (scsi_probe_lun(sdev, result, result_len, &bflags))  in scsi_probe_and_add_lun()
1216 		SCSI_LOG_SCAN_BUS(2, sdev_printk(KERN_INFO, sdev, "scsi scan:"  in scsi_probe_and_add_lun()
1224 				sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1259 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1266 	res = scsi_add_lun(sdev, result, &bflags, shost->async_scan);  in scsi_probe_and_add_lun()
1269 			sdev->lockable = 0;  in scsi_probe_and_add_lun()
1270 			scsi_unlock_floptical(sdev, result);  in scsi_probe_and_add_lun()
1279 			if (scsi_device_get(sdev) == 0) {  in scsi_probe_and_add_lun()
1280 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1282 				__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1287 		__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1409 	struct scsi_device *sdev;  in scsi_report_lun_scan()  local
1435 	if (!(sdev = scsi_device_lookup_by_target(starget, 0))) {  in scsi_report_lun_scan()
1436 		sdev = scsi_alloc_sdev(starget, 0, NULL);  in scsi_report_lun_scan()
1437 		if (!sdev)  in scsi_report_lun_scan()
1439 		if (scsi_device_get(sdev)) {  in scsi_report_lun_scan()
1440 			__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1484 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1488 		result = scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN,  in scsi_report_lun_scan()
1493 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1528 	SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1538 		if (lun > sdev->host->max_lun) {  in scsi_report_lun_scan()
1539 			sdev_printk(KERN_WARNING, sdev,  in scsi_report_lun_scan()
1551 				sdev_printk(KERN_ERR, sdev,  in scsi_report_lun_scan()
1563 	if (scsi_device_created(sdev))  in scsi_report_lun_scan()
1567 		__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1568 	scsi_device_put(sdev);  in scsi_report_lun_scan()
1575 	struct scsi_device *sdev = ERR_PTR(-ENODEV);  in __scsi_add_device()  local
1592 		scsi_probe_and_add_lun(starget, lun, NULL, &sdev,  in __scsi_add_device()
1605 	return sdev;  in __scsi_add_device()
1612 	struct scsi_device *sdev =   in scsi_add_device()  local
1614 	if (IS_ERR(sdev))  in scsi_add_device()
1615 		return PTR_ERR(sdev);  in scsi_add_device()
1617 	scsi_device_put(sdev);  in scsi_add_device()
1622 int scsi_resume_device(struct scsi_device *sdev)  in scsi_resume_device()  argument
1624 	struct device *dev = &sdev->sdev_gendev;  in scsi_resume_device()
1635 	if (sdev->sdev_state != SDEV_RUNNING ||  in scsi_resume_device()
1636 	    blk_queue_pm_only(sdev->request_queue)) {  in scsi_resume_device()
1656 int scsi_rescan_device(struct scsi_device *sdev)  in scsi_rescan_device()  argument
1658 	struct device *dev = &sdev->sdev_gendev;  in scsi_rescan_device()
1669 	if (sdev->sdev_state != SDEV_RUNNING ||  in scsi_rescan_device()
1670 	    blk_queue_pm_only(sdev->request_queue)) {  in scsi_rescan_device()
1675 	scsi_attach_vpd(sdev);  in scsi_rescan_device()
1676 	scsi_cdl_check(sdev);  in scsi_rescan_device()
1678 	if (sdev->handler && sdev->handler->rescan)  in scsi_rescan_device()
1679 		sdev->handler->rescan(sdev);  in scsi_rescan_device()
1857 	struct scsi_device *sdev;  in scsi_sysfs_add_devices()  local
1858 	shost_for_each_device(sdev, shost) {  in scsi_sysfs_add_devices()
1860 		if (sdev->sdev_state == SDEV_DEL)  in scsi_sysfs_add_devices()
1863 		if (sdev->is_visible)  in scsi_sysfs_add_devices()
1866 		    scsi_sysfs_add_sdev(sdev) != 0)  in scsi_sysfs_add_devices()
1867 			__scsi_remove_device(sdev);  in scsi_sysfs_add_devices()
2029 	struct scsi_device *sdev;  in scsi_forget_host()  local
2034 	list_for_each_entry(sdev, &shost->__devices, siblings) {  in scsi_forget_host()
2035 		if (sdev->sdev_state == SDEV_DEL)  in scsi_forget_host()
2038 		__scsi_remove_device(sdev);  in scsi_forget_host()