include/scsi/scsi_host.h

553 struct Scsi_Host {  struct
562 	struct list_head	__devices;
563 	struct list_head	__targets;
565 	struct scsi_host_cmd_pool *cmd_pool;
566 	spinlock_t		free_list_lock;
567 	struct list_head	free_list; /* backup store of cmd structs */
568 	struct list_head	starved_list;
570 	spinlock_t		default_lock;
571 	spinlock_t		*host_lock;
573 	struct mutex		scan_mutex;/* serialize scanning activity */
575 	struct list_head	eh_cmd_q;
576 	struct task_struct    * ehandler;  /* Error recovery thread. */
577 	struct completion     * eh_action; /* Wait for specific actions on the
579 	wait_queue_head_t       host_wait;
580 	struct scsi_host_template *hostt;
581 	struct scsi_transport_template *transportt;
587 	struct blk_queue_tag	*bqt;
594 	unsigned int host_busy;		   /* commands actually active on low-level */
595 	unsigned int host_failed;	   /* commands that failed. */
596 	unsigned int host_eh_scheduled;    /* EH scheduled without command */
598 	unsigned int host_no;  /* Used for IOCTL_GET_IDLUN, /proc/scsi et al. */
599 	int resetting; /* if set, it means that last_reset is a valid value */
600 	unsigned long last_reset;
608 	unsigned int max_id;
609 	unsigned int max_lun;
610 	unsigned int max_channel;
619 	unsigned int unique_id;
628 	unsigned short max_cmd_len;
630 	int this_id;
631 	int can_queue;
632 	short cmd_per_lun;
633 	short unsigned int sg_tablesize;
634 	short unsigned int sg_prot_tablesize;
635 	short unsigned int max_sectors;
636 	unsigned long dma_boundary;
641 	unsigned long cmd_serial_number;
643 	unsigned active_mode:2;
644 	unsigned unchecked_isa_dma:1;
645 	unsigned use_clustering:1;
646 	unsigned use_blk_tcq:1;
652 	unsigned host_self_blocked:1;
659 	unsigned reverse_ordering:1;
664 	unsigned ordered_tag:1;
667 	unsigned tmf_in_progress:1;
670 	unsigned async_scan:1;
673 	unsigned eh_noresume:1;
678 	char work_q_name[20];
679 	struct workqueue_struct *work_q;
684 	unsigned int host_blocked;
689 	unsigned int max_host_blocked;
692 	unsigned int prot_capabilities;
693 	unsigned char prot_guard_type;
699 	struct request_queue *uspace_req_q;
702 	unsigned long base;
703 	unsigned long io_port;
704 	unsigned char n_io_port;
705 	unsigned char dma_channel;
706 	unsigned int  irq;
709 	enum scsi_host_state shost_state;
712 	struct device		shost_gendev, shost_dev;
721 	struct list_head sht_legacy_list;
745 	container_of(d, struct Scsi_Host, shost_dev)  argument