include/scsi/scsi_device.h

68 struct scsi_device {  struct
69 	struct Scsi_Host *host;
70 	struct request_queue *request_queue;
73 	struct list_head    siblings;   /* list of all devices on this host */
74 	struct list_head    same_target_siblings; /* just the devices sharing same target id */
77 	unsigned int device_busy;	/* commands actually active on
79 	spinlock_t list_lock;
80 	struct list_head cmd_list;	/* queue of in use SCSI Command structures */
81 	struct list_head starved_entry;
82 	struct scsi_cmnd *current_cmnd;	/* currently active command */
83 	unsigned short queue_depth;	/* How deep of a queue we want */
84 	unsigned short max_queue_depth;	/* max queue depth */
85 	unsigned short last_queue_full_depth; /* These two are used by */
86 	unsigned short last_queue_full_count; /* scsi_track_queue_full() */
87 	unsigned long last_queue_full_time;	/* last queue full time */
88 	unsigned long queue_ramp_up_period;	/* ramp up period in jiffies */
91 	unsigned long last_queue_ramp_up;	/* last queue ramp up time */
93 	unsigned int id, lun, channel;
95 	unsigned int manufacturer;	/* Manufacturer of device, for using
97 	unsigned sector_size;	/* size in bytes */
99 	void *hostdata;		/* available to low-level driver */
100 	char type;
101 	char scsi_level;
102 	char inq_periph_qual;	/* PQ from INQUIRY data */
103 	unsigned char inquiry_len;	/* valid bytes in 'inquiry' */
104 	unsigned char * inquiry;	/* INQUIRY response data */
105 	const char * vendor;		/* [back_compat] point into 'inquiry' ... */
106 	const char * model;		/* ... after scan; point to static string */
107 	const char * rev;		/* ... "nullnullnullnull" before scan */
108 	unsigned char current_tag;	/* current tag */
109 	struct scsi_target      *sdev_target;   /* used only for single_lun */
111 	unsigned int	sdev_bflags; /* black/white flags as also found in
115 	unsigned writeable:1;
116 	unsigned removable:1;
117 	unsigned changed:1;	/* Data invalid due to media change */
118 	unsigned busy:1;	/* Used to prevent races */
119 	unsigned lockable:1;	/* Able to prevent media removal */
120 	unsigned locked:1;      /* Media removal disabled */
121 	unsigned borken:1;	/* Tell the Seagate driver to be
123 	unsigned disconnect:1;	/* can disconnect */
124 	unsigned soft_reset:1;	/* Uses soft reset option */
125 	unsigned sdtr:1;	/* Device supports SDTR messages */
126 	unsigned wdtr:1;	/* Device supports WDTR messages */
127 	unsigned ppr:1;		/* Device supports PPR messages */
128 	unsigned tagged_supported:1;	/* Supports SCSI-II tagged queuing */
129 	unsigned simple_tags:1;	/* simple queue tag messages are enabled */
130 	unsigned ordered_tags:1;/* ordered queue tag messages are enabled */
131 	unsigned was_reset:1;	/* There was a bus reset on the bus for
133 	unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
135 	unsigned use_10_for_rw:1; /* first try 10-byte read / write */
136 	unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
137 	unsigned skip_ms_page_8:1;	/* do not use MODE SENSE page 0x08 */
138 	unsigned skip_ms_page_3f:1;	/* do not use MODE SENSE page 0x3f */
139 	unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
140 	unsigned no_start_on_add:1;	/* do not issue start on add */
141 	unsigned allow_restart:1; /* issue START_UNIT in error handler */
142 	unsigned manage_start_stop:1;	/* Let HLD (sd) manage start/stop */
143 	unsigned start_stop_pwr_cond:1;	/* Set power cond. in START_STOP_UNIT */
144 	unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
145 	unsigned select_no_atn:1;
146 	unsigned fix_capacity:1;	/* READ_CAPACITY is too high by 1 */
147 	unsigned guess_capacity:1;	/* READ_CAPACITY might be too high by 1 */
148 	unsigned retry_hwerror:1;	/* Retry HARDWARE_ERROR */
149 	unsigned last_sector_bug:1;	/* do not use multisector accesses on
151 	unsigned no_read_disc_info:1;	/* Avoid READ_DISC_INFO cmds */
175 	enum scsi_device_state sdev_state;  argument
193 	int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *);  argument