1 /* SPDX-License-Identifier: GPL-2.0 */
8 #include <linux/blk-mq.h>
49 				 * originate in the mid-layer) */
86 	/* put union of data structures, for non-simple event types,
92  * struct scsi_vpd - SCSI Vital Product Data
107 	/* the next two are protected by the host->host_lock */
118 	unsigned short max_queue_depth;	/* max queue depth */
130 					 * vendor-specific cmd's */
133 	void *hostdata;		/* available to low-level driver */
144 #define SCSI_DEFAULT_VPD_LEN	255	/* default SCSI VPD page size (max) */
163 	 * If true, let the high-level device driver (sd) manage the device
170 	 * If true, let the high-level device driver (sd) manage the device
176 	 * If true, let the high-level device driver (sd) manage the device
182 	 * If set and if the device is runtime suspended, ask the high-level
204 	unsigned tagged_supported:1;	/* Supports SCSI-II tagged queuing */
210 	unsigned use_10_for_rw:1; /* first try 10-byte read / write */
211 	unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
300 	to_scsi_device(class_dev->parent)
303 	dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
323 		if (__rq->q->disk)					\
324 			sdev_dbg((scmd)->device, "[%s] " fmt,		\
325 				 __rq->q->disk->disk_name, ##a);	\
327 			sdev_dbg((scmd)->device, fmt, ##a);		\
377 	void 			*hostdata; /* available to low-level driver */
385 	return to_scsi_target(sdev->sdev_gendev.parent);  in scsi_target()
388 	to_scsi_target(class_dev->parent)
391 	dev_printk(prefix, &(starget)->dev, fmt, ##a)
426  * shost_for_each_device - iterate over all devices of a host
440  * __shost_for_each_device - iterate over all devices of a host (UNLOCKED)
446  * protected by shost->host_lock.
453 	list_for_each_entry((sdev), &((shost)->__devices), siblings)
462 		    int retries, struct scsi_mode_data *data,
466 			    int retries, struct scsi_mode_data *data,
469 				int retries, struct scsi_sense_hdr *sshdr);
518 #define SCMD_FAILURE_NO_LIMIT	-1
531 	s8 retries;  member
557 		     int timeout, int retries,
576 	return device_reprobe(&sdev->sdev_gendev);  in scsi_device_reprobe()
581 	return sdev->channel;  in sdev_channel()
586 	return sdev->id;  in sdev_id()
589 #define scmd_id(scmd) sdev_id((scmd)->device)
590 #define scmd_channel(scmd) sdev_channel((scmd)->device)
597 	return (sdev->sdev_state != SDEV_OFFLINE &&  in scsi_device_online()
598 		sdev->sdev_state != SDEV_TRANSPORT_OFFLINE &&  in scsi_device_online()
599 		sdev->sdev_state != SDEV_DEL);  in scsi_device_online()
603 	return sdev->sdev_state == SDEV_BLOCK ||  in scsi_device_blocked()
604 		sdev->sdev_state == SDEV_CREATED_BLOCK;  in scsi_device_blocked()
608 	return sdev->sdev_state == SDEV_CREATED ||  in scsi_device_created()
609 		sdev->sdev_state == SDEV_CREATED_BLOCK;  in scsi_device_created()
619 	return sdev->sdtr;  in scsi_device_sync()
623 	return sdev->wdtr;  in scsi_device_wide()
627 	return sdev->ppr;  in scsi_device_dt()
631 	if (sdev->inquiry_len < 57)  in scsi_device_dt_only()
633 	return (sdev->inquiry[56] & 0x0c) == 0x04;  in scsi_device_dt_only()
637 	if (sdev->inquiry_len < 57)  in scsi_device_ius()
639 	return sdev->inquiry[56] & 0x01;  in scsi_device_ius()
643 	if (sdev->inquiry_len < 57)  in scsi_device_qas()
645 	return sdev->inquiry[56] & 0x02;  in scsi_device_qas()
649 	return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1;  in scsi_device_enclosure()
654 	if (sdev->no_dif)  in scsi_device_protection()
657 	return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);  in scsi_device_protection()
662 	return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0;  in scsi_device_tpgs()
666  * scsi_device_supports_vpd - test if a device supports VPD pages
671  * SCSI level is at least SPC-3 and 'skip_vpd_pages' is not set.
678 	if (sdev->try_vpd_pages)  in scsi_device_supports_vpd()
681 	 * Although VPD inquiries can go to SCSI-2 type devices,  in scsi_device_supports_vpd()
683 	 * we currently ask for are mandatory for SPC-2 and beyond  in scsi_device_supports_vpd()
685 	if (sdev->scsi_level >= SCSI_SPC_2 && !sdev->skip_vpd_pages)  in scsi_device_supports_vpd()
692 	return sbitmap_weight(&sdev->budget_map);  in scsi_device_busy()
696 #define scsi_get_ua_new_media_ctr(sdev)	atomic_read(&sdev->ua_new_media_ctr)
697 #define scsi_get_ua_por_ctr(sdev)	atomic_read(&sdev->ua_por_ctr)
700 	MODULE_ALIAS("scsi:t-" __stringify(type) "*")
701 #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"