185 static void scsi_unlock_floptical(struct scsi_device *sdev,  in scsi_unlock_floptical()  argument
190 	sdev_printk(KERN_NOTICE, sdev, "unlocking floptical drive\n");  in scsi_unlock_floptical()
197 	scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE, result, 0x2a, NULL,  in scsi_unlock_floptical()
218 	struct scsi_device *sdev;  in scsi_alloc_sdev()  local
222 	sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,  in scsi_alloc_sdev()
224 	if (!sdev)  in scsi_alloc_sdev()
227 	sdev->vendor = scsi_null_device_strs;  in scsi_alloc_sdev()
228 	sdev->model = scsi_null_device_strs;  in scsi_alloc_sdev()
229 	sdev->rev = scsi_null_device_strs;  in scsi_alloc_sdev()
230 	sdev->host = shost;  in scsi_alloc_sdev()
231 	sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD;  in scsi_alloc_sdev()
232 	sdev->id = starget->id;  in scsi_alloc_sdev()
233 	sdev->lun = lun;  in scsi_alloc_sdev()
234 	sdev->channel = starget->channel;  in scsi_alloc_sdev()
235 	mutex_init(&sdev->state_mutex);  in scsi_alloc_sdev()
236 	sdev->sdev_state = SDEV_CREATED;  in scsi_alloc_sdev()
237 	INIT_LIST_HEAD(&sdev->siblings);  in scsi_alloc_sdev()
238 	INIT_LIST_HEAD(&sdev->same_target_siblings);  in scsi_alloc_sdev()
239 	INIT_LIST_HEAD(&sdev->cmd_list);  in scsi_alloc_sdev()
240 	INIT_LIST_HEAD(&sdev->starved_entry);  in scsi_alloc_sdev()
241 	INIT_LIST_HEAD(&sdev->event_list);  in scsi_alloc_sdev()
242 	spin_lock_init(&sdev->list_lock);  in scsi_alloc_sdev()
243 	mutex_init(&sdev->inquiry_mutex);  in scsi_alloc_sdev()
244 	INIT_WORK(&sdev->event_work, scsi_evt_thread);  in scsi_alloc_sdev()
245 	INIT_WORK(&sdev->requeue_work, scsi_requeue_run_queue);  in scsi_alloc_sdev()
247 	sdev->sdev_gendev.parent = get_device(&starget->dev);  in scsi_alloc_sdev()
248 	sdev->sdev_target = starget;  in scsi_alloc_sdev()
251 	sdev->hostdata = hostdata;  in scsi_alloc_sdev()
255 	sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED;  in scsi_alloc_sdev()
260 	sdev->type = -1;  in scsi_alloc_sdev()
267 	sdev->borken = 1;  in scsi_alloc_sdev()
270 		sdev->request_queue = scsi_mq_alloc_queue(sdev);  in scsi_alloc_sdev()
272 		sdev->request_queue = scsi_old_alloc_queue(sdev);  in scsi_alloc_sdev()
273 	if (!sdev->request_queue) {  in scsi_alloc_sdev()
277 		kfree(sdev);  in scsi_alloc_sdev()
280 	WARN_ON_ONCE(!blk_get_queue(sdev->request_queue));  in scsi_alloc_sdev()
281 	sdev->request_queue->queuedata = sdev;  in scsi_alloc_sdev()
283 	if (!shost_use_blk_mq(sdev->host)) {  in scsi_alloc_sdev()
284 		blk_queue_init_tags(sdev->request_queue,  in scsi_alloc_sdev()
285 				    sdev->host->cmd_per_lun, shost->bqt,  in scsi_alloc_sdev()
288 	scsi_change_queue_depth(sdev, sdev->host->cmd_per_lun ?  in scsi_alloc_sdev()
289 					sdev->host->cmd_per_lun : 1);  in scsi_alloc_sdev()
291 	scsi_sysfs_device_initialize(sdev);  in scsi_alloc_sdev()
294 		ret = shost->hostt->slave_alloc(sdev);  in scsi_alloc_sdev()
306 	return sdev;  in scsi_alloc_sdev()
309 	__scsi_remove_device(sdev);  in scsi_alloc_sdev()
568 static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_probe_lun()  argument
582 	first_inquiry_len = sdev->inquiry_len ? sdev->inquiry_len : 36;  in scsi_probe_lun()
587 	SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
601 		result = scsi_execute_req(sdev,  scsi_cmd, DMA_FROM_DEVICE,  in scsi_probe_lun()
606 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
653 		*bflags = scsi_get_device_flags(sdev, &inq_result[8],  in scsi_probe_lun()
661 			else if (sdev->inquiry_len)  in scsi_probe_lun()
662 				next_inquiry_len = sdev->inquiry_len;  in scsi_probe_lun()
675 		sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
693 	sdev->inquiry_len = min(try_inquiry_len, response_len);  in scsi_probe_lun()
710 	if (sdev->inquiry_len < 36) {  in scsi_probe_lun()
711 		if (!sdev->host->short_inquiry) {  in scsi_probe_lun()
712 			shost_printk(KERN_INFO, sdev->host,  in scsi_probe_lun()
714 				    " using 36\n", sdev->inquiry_len);  in scsi_probe_lun()
715 			sdev->host->short_inquiry = 1;  in scsi_probe_lun()
717 		sdev->inquiry_len = 36;  in scsi_probe_lun()
738 	sdev->scsi_level = inq_result[2] & 0x07;  in scsi_probe_lun()
739 	if (sdev->scsi_level >= 2 ||  in scsi_probe_lun()
740 	    (sdev->scsi_level == 1 && (inq_result[3] & 0x0f) == 1))  in scsi_probe_lun()
741 		sdev->scsi_level++;  in scsi_probe_lun()
742 	sdev->sdev_target->scsi_level = sdev->scsi_level;  in scsi_probe_lun()
748 	sdev->lun_in_cdb = 0;  in scsi_probe_lun()
749 	if (sdev->scsi_level <= SCSI_2 &&  in scsi_probe_lun()
750 	    sdev->scsi_level != SCSI_UNKNOWN &&  in scsi_probe_lun()
751 	    !sdev->host->no_scsi2_lun_in_cdb)  in scsi_probe_lun()
752 		sdev->lun_in_cdb = 1;  in scsi_probe_lun()
772 static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_add_lun()  argument
797 	sdev->inquiry = kmemdup(inq_result,  in scsi_add_lun()
798 				max_t(size_t, sdev->inquiry_len, 36),  in scsi_add_lun()
800 	if (sdev->inquiry == NULL)  in scsi_add_lun()
803 	sdev->vendor = (char *) (sdev->inquiry + 8);  in scsi_add_lun()
804 	sdev->model = (char *) (sdev->inquiry + 16);  in scsi_add_lun()
805 	sdev->rev = (char *) (sdev->inquiry + 32);  in scsi_add_lun()
807 	if (strncmp(sdev->vendor, "ATA     ", 8) == 0) {  in scsi_add_lun()
814 		sdev->allow_restart = 1;  in scsi_add_lun()
818 		sdev->type = TYPE_ROM;  in scsi_add_lun()
819 		sdev->removable = 1;  in scsi_add_lun()
821 		sdev->type = (inq_result[0] & 0x1f);  in scsi_add_lun()
822 		sdev->removable = (inq_result[1] & 0x80) >> 7;  in scsi_add_lun()
829 		if (scsi_is_wlun(sdev->lun) && sdev->type != TYPE_WLUN) {  in scsi_add_lun()
830 			sdev_printk(KERN_WARNING, sdev,  in scsi_add_lun()
832 				__func__, sdev->type, (unsigned int)sdev->lun);  in scsi_add_lun()
833 			sdev->type = TYPE_WLUN;  in scsi_add_lun()
838 	if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) {  in scsi_add_lun()
863 	sdev->inq_periph_qual = (inq_result[0] >> 5) & 7;  in scsi_add_lun()
864 	sdev->lockable = sdev->removable;  in scsi_add_lun()
865 	sdev->soft_reset = (inq_result[7] & 1) && ((inq_result[3] & 7) == 2);  in scsi_add_lun()
867 	if (sdev->scsi_level >= SCSI_3 ||  in scsi_add_lun()
868 			(sdev->inquiry_len > 56 && inq_result[56] & 0x04))  in scsi_add_lun()
869 		sdev->ppr = 1;  in scsi_add_lun()
871 		sdev->wdtr = 1;  in scsi_add_lun()
873 		sdev->sdtr = 1;  in scsi_add_lun()
875 	sdev_printk(KERN_NOTICE, sdev, "%s %.8s %.16s %.4s PQ: %d "  in scsi_add_lun()
876 			"ANSI: %d%s\n", scsi_device_type(sdev->type),  in scsi_add_lun()
877 			sdev->vendor, sdev->model, sdev->rev,  in scsi_add_lun()
878 			sdev->inq_periph_qual, inq_result[2] & 0x07,  in scsi_add_lun()
881 	if ((sdev->scsi_level >= SCSI_2) && (inq_result[7] & 2) &&  in scsi_add_lun()
883 		sdev->tagged_supported = 1;  in scsi_add_lun()
884 		sdev->simple_tags = 1;  in scsi_add_lun()
893 		sdev->borken = 0;  in scsi_add_lun()
896 		sdev->no_uld_attach = 1;  in scsi_add_lun()
903 		sdev->select_no_atn = 1;  in scsi_add_lun()
910 		blk_queue_max_hw_sectors(sdev->request_queue, 512);  in scsi_add_lun()
916 		blk_queue_max_hw_sectors(sdev->request_queue, 1024);  in scsi_add_lun()
923 		sdev->no_start_on_add = 1;  in scsi_add_lun()
926 		scsi_target(sdev)->single_lun = 1;  in scsi_add_lun()
928 	sdev->use_10_for_rw = 1;  in scsi_add_lun()
934 		sdev->no_report_opcodes = 1;  in scsi_add_lun()
938 	mutex_lock(&sdev->state_mutex);  in scsi_add_lun()
939 	ret = scsi_device_set_state(sdev, SDEV_RUNNING);  in scsi_add_lun()
941 		ret = scsi_device_set_state(sdev, SDEV_BLOCK);  in scsi_add_lun()
942 	mutex_unlock(&sdev->state_mutex);  in scsi_add_lun()
945 		sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
947 			    scsi_device_state_name(sdev->sdev_state));  in scsi_add_lun()
952 		sdev->lockable = 0;  in scsi_add_lun()
955 		sdev->retry_hwerror = 1;  in scsi_add_lun()
958 		sdev->no_dif = 1;  in scsi_add_lun()
961 		sdev->unmap_limit_for_ws = 1;  in scsi_add_lun()
963 	sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;  in scsi_add_lun()
966 		sdev->try_vpd_pages = 1;  in scsi_add_lun()
968 		sdev->skip_vpd_pages = 1;  in scsi_add_lun()
970 	transport_configure_device(&sdev->sdev_gendev);  in scsi_add_lun()
972 	if (sdev->host->hostt->slave_configure) {  in scsi_add_lun()
973 		ret = sdev->host->hostt->slave_configure(sdev);  in scsi_add_lun()
980 				sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
987 	if (sdev->scsi_level >= SCSI_3)  in scsi_add_lun()
988 		scsi_attach_vpd(sdev);  in scsi_add_lun()
990 	sdev->max_queue_depth = sdev->queue_depth;  in scsi_add_lun()
991 	sdev->sdev_bflags = *bflags;  in scsi_add_lun()
998 	if (!async && scsi_sysfs_add_sdev(sdev) != 0)  in scsi_add_lun()
1057 	struct scsi_device *sdev;  in scsi_probe_and_add_lun()  local
1067 	sdev = scsi_device_lookup_by_target(starget, lun);  in scsi_probe_and_add_lun()
1068 	if (sdev) {  in scsi_probe_and_add_lun()
1069 		if (rescan != SCSI_SCAN_INITIAL || !scsi_device_created(sdev)) {  in scsi_probe_and_add_lun()
1070 			SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1072 				dev_name(&sdev->sdev_gendev)));  in scsi_probe_and_add_lun()
1074 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1076 				scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1079 				*bflagsp = scsi_get_device_flags(sdev,  in scsi_probe_and_add_lun()
1080 								 sdev->vendor,  in scsi_probe_and_add_lun()
1081 								 sdev->model);  in scsi_probe_and_add_lun()
1084 		scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1086 		sdev = scsi_alloc_sdev(starget, lun, hostdata);  in scsi_probe_and_add_lun()
1087 	if (!sdev)  in scsi_probe_and_add_lun()
1095 	if (scsi_probe_lun(sdev, result, result_len, &bflags))  in scsi_probe_and_add_lun()
1114 		SCSI_LOG_SCAN_BUS(2, sdev_printk(KERN_INFO, sdev, "scsi scan:"  in scsi_probe_and_add_lun()
1122 				sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1157 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1164 	res = scsi_add_lun(sdev, result, &bflags, shost->async_scan);  in scsi_probe_and_add_lun()
1167 			sdev->lockable = 0;  in scsi_probe_and_add_lun()
1168 			scsi_unlock_floptical(sdev, result);  in scsi_probe_and_add_lun()
1177 			if (scsi_device_get(sdev) == 0) {  in scsi_probe_and_add_lun()
1178 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1180 				__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1185 		__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1307 	struct scsi_device *sdev;  in scsi_report_lun_scan()  local
1330 	if (!(sdev = scsi_device_lookup_by_target(starget, 0))) {  in scsi_report_lun_scan()
1331 		sdev = scsi_alloc_sdev(starget, 0, NULL);  in scsi_report_lun_scan()
1332 		if (!sdev)  in scsi_report_lun_scan()
1334 		if (scsi_device_get(sdev)) {  in scsi_report_lun_scan()
1335 			__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1348 			   (sdev->host->unchecked_isa_dma ? __GFP_DMA : 0));  in scsi_report_lun_scan()
1380 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1384 		result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,  in scsi_report_lun_scan()
1388 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1423 	SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1433 		if (lun > sdev->host->max_lun) {  in scsi_report_lun_scan()
1434 			sdev_printk(KERN_WARNING, sdev,  in scsi_report_lun_scan()
1446 				sdev_printk(KERN_ERR, sdev,  in scsi_report_lun_scan()
1458 	if (scsi_device_created(sdev))  in scsi_report_lun_scan()
1462 		__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1463 	scsi_device_put(sdev);  in scsi_report_lun_scan()
1470 	struct scsi_device *sdev = ERR_PTR(-ENODEV);  in __scsi_add_device()  local
1487 		scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);  in __scsi_add_device()
1499 	return sdev;  in __scsi_add_device()
1506 	struct scsi_device *sdev =   in scsi_add_device()  local
1508 	if (IS_ERR(sdev))  in scsi_add_device()
1509 		return PTR_ERR(sdev);  in scsi_add_device()
1511 	scsi_device_put(sdev);  in scsi_add_device()
1518 	struct scsi_device *sdev = to_scsi_device(dev);  in scsi_rescan_device()  local
1522 	scsi_attach_vpd(sdev);  in scsi_rescan_device()
1524 	if (sdev->handler && sdev->handler->rescan)  in scsi_rescan_device()
1525 		sdev->handler->rescan(sdev);  in scsi_rescan_device()
1699 	struct scsi_device *sdev;  in scsi_sysfs_add_devices()  local
1700 	shost_for_each_device(sdev, shost) {  in scsi_sysfs_add_devices()
1702 		if (sdev->sdev_state == SDEV_DEL)  in scsi_sysfs_add_devices()
1705 		if (sdev->is_visible)  in scsi_sysfs_add_devices()
1708 		    scsi_sysfs_add_sdev(sdev) != 0)  in scsi_sysfs_add_devices()
1709 			__scsi_remove_device(sdev);  in scsi_sysfs_add_devices()
1870 	struct scsi_device *sdev;  in scsi_forget_host()  local
1875 	list_for_each_entry(sdev, &shost->__devices, siblings) {  in scsi_forget_host()
1876 		if (sdev->sdev_state == SDEV_DEL)  in scsi_forget_host()
1879 		__scsi_remove_device(sdev);  in scsi_forget_host()
1904 	struct scsi_device *sdev = NULL;  in scsi_get_host_dev()  local
1914 	sdev = scsi_alloc_sdev(starget, 0, NULL);  in scsi_get_host_dev()
1915 	if (sdev)  in scsi_get_host_dev()
1916 		sdev->borken = 0;  in scsi_get_host_dev()
1922 	return sdev;  in scsi_get_host_dev()
1934 void scsi_free_host_dev(struct scsi_device *sdev)  in scsi_free_host_dev()  argument
1936 	BUG_ON(sdev->id != sdev->host->this_id);  in scsi_free_host_dev()
1938 	__scsi_remove_device(sdev);  in scsi_free_host_dev()