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()
219 	struct scsi_device *sdev;  in scsi_alloc_sdev()  local
224 	sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,  in scsi_alloc_sdev()
226 	if (!sdev)  in scsi_alloc_sdev()
229 	sdev->vendor = scsi_null_device_strs;  in scsi_alloc_sdev()
230 	sdev->model = scsi_null_device_strs;  in scsi_alloc_sdev()
231 	sdev->rev = scsi_null_device_strs;  in scsi_alloc_sdev()
232 	sdev->host = shost;  in scsi_alloc_sdev()
233 	sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD;  in scsi_alloc_sdev()
234 	sdev->id = starget->id;  in scsi_alloc_sdev()
235 	sdev->lun = lun;  in scsi_alloc_sdev()
236 	sdev->channel = starget->channel;  in scsi_alloc_sdev()
237 	mutex_init(&sdev->state_mutex);  in scsi_alloc_sdev()
238 	sdev->sdev_state = SDEV_CREATED;  in scsi_alloc_sdev()
239 	INIT_LIST_HEAD(&sdev->siblings);  in scsi_alloc_sdev()
240 	INIT_LIST_HEAD(&sdev->same_target_siblings);  in scsi_alloc_sdev()
241 	INIT_LIST_HEAD(&sdev->starved_entry);  in scsi_alloc_sdev()
242 	INIT_LIST_HEAD(&sdev->event_list);  in scsi_alloc_sdev()
243 	spin_lock_init(&sdev->list_lock);  in scsi_alloc_sdev()
244 	mutex_init(&sdev->inquiry_mutex);  in scsi_alloc_sdev()
245 	INIT_WORK(&sdev->event_work, scsi_evt_thread);  in scsi_alloc_sdev()
246 	INIT_WORK(&sdev->requeue_work, scsi_requeue_run_queue);  in scsi_alloc_sdev()
248 	sdev->sdev_gendev.parent = get_device(&starget->dev);  in scsi_alloc_sdev()
249 	sdev->sdev_target = starget;  in scsi_alloc_sdev()
252 	sdev->hostdata = hostdata;  in scsi_alloc_sdev()
256 	sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED;  in scsi_alloc_sdev()
261 	sdev->type = -1;  in scsi_alloc_sdev()
268 	sdev->borken = 1;  in scsi_alloc_sdev()
270 	sdev->sg_reserved_size = INT_MAX;  in scsi_alloc_sdev()
272 	q = blk_mq_init_queue(&sdev->host->tag_set);  in scsi_alloc_sdev()
277 		kfree(sdev);  in scsi_alloc_sdev()
280 	sdev->request_queue = q;  in scsi_alloc_sdev()
281 	q->queuedata = sdev;  in scsi_alloc_sdev()
282 	__scsi_init_queue(sdev->host, q);  in scsi_alloc_sdev()
286 	depth = sdev->host->cmd_per_lun ?: 1;  in scsi_alloc_sdev()
294 	if (sbitmap_init_node(&sdev->budget_map,  in scsi_alloc_sdev()
295 				scsi_device_max_queue_depth(sdev),  in scsi_alloc_sdev()
297 				GFP_KERNEL, sdev->request_queue->node,  in scsi_alloc_sdev()
300 		kfree(sdev);  in scsi_alloc_sdev()
304 	scsi_change_queue_depth(sdev, depth);  in scsi_alloc_sdev()
306 	scsi_sysfs_device_initialize(sdev);  in scsi_alloc_sdev()
309 		ret = shost->hostt->slave_alloc(sdev);  in scsi_alloc_sdev()
321 	return sdev;  in scsi_alloc_sdev()
324 	__scsi_remove_device(sdev);  in scsi_alloc_sdev()
584 static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_probe_lun()  argument
598 	first_inquiry_len = sdev->inquiry_len ? sdev->inquiry_len : 36;  in scsi_probe_lun()
603 	SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
617 		result = scsi_execute_req(sdev,  scsi_cmd, DMA_FROM_DEVICE,  in scsi_probe_lun()
622 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
669 		*bflags = scsi_get_device_flags(sdev, &inq_result[8],  in scsi_probe_lun()
677 			else if (sdev->inquiry_len)  in scsi_probe_lun()
678 				next_inquiry_len = sdev->inquiry_len;  in scsi_probe_lun()
691 		sdev_printk(KERN_INFO, sdev,  in scsi_probe_lun()
709 	sdev->inquiry_len = min(try_inquiry_len, response_len);  in scsi_probe_lun()
726 	if (sdev->inquiry_len < 36) {  in scsi_probe_lun()
727 		if (!sdev->host->short_inquiry) {  in scsi_probe_lun()
728 			shost_printk(KERN_INFO, sdev->host,  in scsi_probe_lun()
730 				    " using 36\n", sdev->inquiry_len);  in scsi_probe_lun()
731 			sdev->host->short_inquiry = 1;  in scsi_probe_lun()
733 		sdev->inquiry_len = 36;  in scsi_probe_lun()
754 	sdev->scsi_level = inq_result[2] & 0x07;  in scsi_probe_lun()
755 	if (sdev->scsi_level >= 2 ||  in scsi_probe_lun()
756 	    (sdev->scsi_level == 1 && (inq_result[3] & 0x0f) == 1))  in scsi_probe_lun()
757 		sdev->scsi_level++;  in scsi_probe_lun()
758 	sdev->sdev_target->scsi_level = sdev->scsi_level;  in scsi_probe_lun()
764 	sdev->lun_in_cdb = 0;  in scsi_probe_lun()
765 	if (sdev->scsi_level <= SCSI_2 &&  in scsi_probe_lun()
766 	    sdev->scsi_level != SCSI_UNKNOWN &&  in scsi_probe_lun()
767 	    !sdev->host->no_scsi2_lun_in_cdb)  in scsi_probe_lun()
768 		sdev->lun_in_cdb = 1;  in scsi_probe_lun()
788 static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,  in scsi_add_lun()  argument
813 	sdev->inquiry = kmemdup(inq_result,  in scsi_add_lun()
814 				max_t(size_t, sdev->inquiry_len, 36),  in scsi_add_lun()
816 	if (sdev->inquiry == NULL)  in scsi_add_lun()
819 	sdev->vendor = (char *) (sdev->inquiry + 8);  in scsi_add_lun()
820 	sdev->model = (char *) (sdev->inquiry + 16);  in scsi_add_lun()
821 	sdev->rev = (char *) (sdev->inquiry + 32);  in scsi_add_lun()
823 	if (strncmp(sdev->vendor, "ATA     ", 8) == 0) {  in scsi_add_lun()
830 		sdev->allow_restart = 1;  in scsi_add_lun()
834 		sdev->type = TYPE_ROM;  in scsi_add_lun()
835 		sdev->removable = 1;  in scsi_add_lun()
837 		sdev->type = (inq_result[0] & 0x1f);  in scsi_add_lun()
838 		sdev->removable = (inq_result[1] & 0x80) >> 7;  in scsi_add_lun()
845 		if (scsi_is_wlun(sdev->lun) && sdev->type != TYPE_WLUN) {  in scsi_add_lun()
846 			sdev_printk(KERN_WARNING, sdev,  in scsi_add_lun()
848 				__func__, sdev->type, (unsigned int)sdev->lun);  in scsi_add_lun()
849 			sdev->type = TYPE_WLUN;  in scsi_add_lun()
854 	if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) {  in scsi_add_lun()
879 	sdev->inq_periph_qual = (inq_result[0] >> 5) & 7;  in scsi_add_lun()
880 	sdev->lockable = sdev->removable;  in scsi_add_lun()
881 	sdev->soft_reset = (inq_result[7] & 1) && ((inq_result[3] & 7) == 2);  in scsi_add_lun()
883 	if (sdev->scsi_level >= SCSI_3 ||  in scsi_add_lun()
884 			(sdev->inquiry_len > 56 && inq_result[56] & 0x04))  in scsi_add_lun()
885 		sdev->ppr = 1;  in scsi_add_lun()
887 		sdev->wdtr = 1;  in scsi_add_lun()
889 		sdev->sdtr = 1;  in scsi_add_lun()
891 	sdev_printk(KERN_NOTICE, sdev, "%s %.8s %.16s %.4s PQ: %d "  in scsi_add_lun()
892 			"ANSI: %d%s\n", scsi_device_type(sdev->type),  in scsi_add_lun()
893 			sdev->vendor, sdev->model, sdev->rev,  in scsi_add_lun()
894 			sdev->inq_periph_qual, inq_result[2] & 0x07,  in scsi_add_lun()
897 	if ((sdev->scsi_level >= SCSI_2) && (inq_result[7] & 2) &&  in scsi_add_lun()
899 		sdev->tagged_supported = 1;  in scsi_add_lun()
900 		sdev->simple_tags = 1;  in scsi_add_lun()
909 		sdev->borken = 0;  in scsi_add_lun()
912 		sdev->no_uld_attach = 1;  in scsi_add_lun()
919 		sdev->select_no_atn = 1;  in scsi_add_lun()
926 		blk_queue_max_hw_sectors(sdev->request_queue, 512);  in scsi_add_lun()
932 		blk_queue_max_hw_sectors(sdev->request_queue, 1024);  in scsi_add_lun()
939 		sdev->no_start_on_add = 1;  in scsi_add_lun()
942 		scsi_target(sdev)->single_lun = 1;  in scsi_add_lun()
944 	sdev->use_10_for_rw = 1;  in scsi_add_lun()
950 		sdev->no_report_opcodes = 1;  in scsi_add_lun()
954 	mutex_lock(&sdev->state_mutex);  in scsi_add_lun()
955 	ret = scsi_device_set_state(sdev, SDEV_RUNNING);  in scsi_add_lun()
957 		ret = scsi_device_set_state(sdev, SDEV_BLOCK);  in scsi_add_lun()
958 	mutex_unlock(&sdev->state_mutex);  in scsi_add_lun()
961 		sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
963 			    scsi_device_state_name(sdev->sdev_state));  in scsi_add_lun()
968 		sdev->lockable = 0;  in scsi_add_lun()
971 		sdev->retry_hwerror = 1;  in scsi_add_lun()
974 		sdev->no_dif = 1;  in scsi_add_lun()
977 		sdev->unmap_limit_for_ws = 1;  in scsi_add_lun()
980 		sdev->ignore_media_change = 1;  in scsi_add_lun()
982 	sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;  in scsi_add_lun()
985 		sdev->try_vpd_pages = 1;  in scsi_add_lun()
987 		sdev->skip_vpd_pages = 1;  in scsi_add_lun()
989 	transport_configure_device(&sdev->sdev_gendev);  in scsi_add_lun()
991 	if (sdev->host->hostt->slave_configure) {  in scsi_add_lun()
992 		ret = sdev->host->hostt->slave_configure(sdev);  in scsi_add_lun()
999 				sdev_printk(KERN_ERR, sdev,  in scsi_add_lun()
1006 	if (sdev->scsi_level >= SCSI_3)  in scsi_add_lun()
1007 		scsi_attach_vpd(sdev);  in scsi_add_lun()
1009 	sdev->max_queue_depth = sdev->queue_depth;  in scsi_add_lun()
1010 	WARN_ON_ONCE(sdev->max_queue_depth > sdev->budget_map.depth);  in scsi_add_lun()
1011 	sdev->sdev_bflags = *bflags;  in scsi_add_lun()
1018 	if (!async && scsi_sysfs_add_sdev(sdev) != 0)  in scsi_add_lun()
1077 	struct scsi_device *sdev;  in scsi_probe_and_add_lun()  local
1087 	sdev = scsi_device_lookup_by_target(starget, lun);  in scsi_probe_and_add_lun()
1088 	if (sdev) {  in scsi_probe_and_add_lun()
1089 		if (rescan != SCSI_SCAN_INITIAL || !scsi_device_created(sdev)) {  in scsi_probe_and_add_lun()
1090 			SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1092 				dev_name(&sdev->sdev_gendev)));  in scsi_probe_and_add_lun()
1094 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1096 				scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1099 				*bflagsp = scsi_get_device_flags(sdev,  in scsi_probe_and_add_lun()
1100 								 sdev->vendor,  in scsi_probe_and_add_lun()
1101 								 sdev->model);  in scsi_probe_and_add_lun()
1104 		scsi_device_put(sdev);  in scsi_probe_and_add_lun()
1106 		sdev = scsi_alloc_sdev(starget, lun, hostdata);  in scsi_probe_and_add_lun()
1107 	if (!sdev)  in scsi_probe_and_add_lun()
1114 	if (scsi_probe_lun(sdev, result, result_len, &bflags))  in scsi_probe_and_add_lun()
1133 		SCSI_LOG_SCAN_BUS(2, sdev_printk(KERN_INFO, sdev, "scsi scan:"  in scsi_probe_and_add_lun()
1141 				sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1177 		SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,  in scsi_probe_and_add_lun()
1184 	res = scsi_add_lun(sdev, result, &bflags, shost->async_scan);  in scsi_probe_and_add_lun()
1187 			sdev->lockable = 0;  in scsi_probe_and_add_lun()
1188 			scsi_unlock_floptical(sdev, result);  in scsi_probe_and_add_lun()
1197 			if (scsi_device_get(sdev) == 0) {  in scsi_probe_and_add_lun()
1198 				*sdevp = sdev;  in scsi_probe_and_add_lun()
1200 				__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1205 		__scsi_remove_device(sdev);  in scsi_probe_and_add_lun()
1327 	struct scsi_device *sdev;  in scsi_report_lun_scan()  local
1350 	if (!(sdev = scsi_device_lookup_by_target(starget, 0))) {  in scsi_report_lun_scan()
1351 		sdev = scsi_alloc_sdev(starget, 0, NULL);  in scsi_report_lun_scan()
1352 		if (!sdev)  in scsi_report_lun_scan()
1354 		if (scsi_device_get(sdev)) {  in scsi_report_lun_scan()
1355 			__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1399 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1403 		result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,  in scsi_report_lun_scan()
1407 		SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1442 	SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev,  in scsi_report_lun_scan()
1452 		if (lun > sdev->host->max_lun) {  in scsi_report_lun_scan()
1453 			sdev_printk(KERN_WARNING, sdev,  in scsi_report_lun_scan()
1465 				sdev_printk(KERN_ERR, sdev,  in scsi_report_lun_scan()
1477 	if (scsi_device_created(sdev))  in scsi_report_lun_scan()
1481 		__scsi_remove_device(sdev);  in scsi_report_lun_scan()
1482 	scsi_device_put(sdev);  in scsi_report_lun_scan()
1489 	struct scsi_device *sdev = ERR_PTR(-ENODEV);  in __scsi_add_device()  local
1506 		scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);  in __scsi_add_device()
1518 	return sdev;  in __scsi_add_device()
1525 	struct scsi_device *sdev =   in scsi_add_device()  local
1527 	if (IS_ERR(sdev))  in scsi_add_device()
1528 		return PTR_ERR(sdev);  in scsi_add_device()
1530 	scsi_device_put(sdev);  in scsi_add_device()
1537 	struct scsi_device *sdev = to_scsi_device(dev);  in scsi_rescan_device()  local
1541 	scsi_attach_vpd(sdev);  in scsi_rescan_device()
1543 	if (sdev->handler && sdev->handler->rescan)  in scsi_rescan_device()
1544 		sdev->handler->rescan(sdev);  in scsi_rescan_device()
1718 	struct scsi_device *sdev;  in scsi_sysfs_add_devices()  local
1719 	shost_for_each_device(sdev, shost) {  in scsi_sysfs_add_devices()
1721 		if (sdev->sdev_state == SDEV_DEL)  in scsi_sysfs_add_devices()
1724 		if (sdev->is_visible)  in scsi_sysfs_add_devices()
1727 		    scsi_sysfs_add_sdev(sdev) != 0)  in scsi_sysfs_add_devices()
1728 			__scsi_remove_device(sdev);  in scsi_sysfs_add_devices()
1890 	struct scsi_device *sdev;  in scsi_forget_host()  local
1895 	list_for_each_entry(sdev, &shost->__devices, siblings) {  in scsi_forget_host()
1896 		if (sdev->sdev_state == SDEV_DEL)  in scsi_forget_host()
1899 		__scsi_remove_device(sdev);  in scsi_forget_host()
1924 	struct scsi_device *sdev = NULL;  in scsi_get_host_dev()  local
1934 	sdev = scsi_alloc_sdev(starget, 0, NULL);  in scsi_get_host_dev()
1935 	if (sdev)  in scsi_get_host_dev()
1936 		sdev->borken = 0;  in scsi_get_host_dev()
1942 	return sdev;  in scsi_get_host_dev()
1954 void scsi_free_host_dev(struct scsi_device *sdev)  in scsi_free_host_dev()  argument
1956 	BUG_ON(sdev->id != sdev->host->this_id);  in scsi_free_host_dev()
1958 	__scsi_remove_device(sdev);  in scsi_free_host_dev()