77 struct scsi_device {  struct
78 	struct Scsi_Host *host;
79 	struct request_queue *request_queue;
82 	struct list_head    siblings;   /* list of all devices on this host */
83 	struct list_head    same_target_siblings; /* just the devices sharing same target id */
85 	atomic_t device_busy;		/* commands actually active on LLDD */
86 	atomic_t device_blocked;	/* Device returned QUEUE_FULL. */
88 	spinlock_t list_lock;
89 	struct list_head cmd_list;	/* queue of in use SCSI Command structures */
90 	struct list_head starved_entry;
91 	struct scsi_cmnd *current_cmnd;	/* currently active command */
92 	unsigned short queue_depth;	/* How deep of a queue we want */
93 	unsigned short max_queue_depth;	/* max queue depth */
94 	unsigned short last_queue_full_depth; /* These two are used by */
95 	unsigned short last_queue_full_count; /* scsi_track_queue_full() */
96 	unsigned long last_queue_full_time;	/* last queue full time */
97 	unsigned long queue_ramp_up_period;	/* ramp up period in jiffies */
100 	unsigned long last_queue_ramp_up;	/* last queue ramp up time */
102 	unsigned int id, channel;
103 	u64 lun;
104 	unsigned int manufacturer;	/* Manufacturer of device, for using 
106 	unsigned sector_size;	/* size in bytes */
108 	void *hostdata;		/* available to low-level driver */
109 	char type;
110 	char scsi_level;
111 	char inq_periph_qual;	/* PQ from INQUIRY data */	
112 	unsigned char inquiry_len;	/* valid bytes in 'inquiry' */
113 	unsigned char * inquiry;	/* INQUIRY response data */
114 	const char * vendor;		/* [back_compat] point into 'inquiry' ... */
115 	const char * model;		/* ... after scan; point to static string */
116 	const char * rev;		/* ... "nullnullnullnull" before scan */
119 	int vpd_pg83_len;
120 	unsigned char *vpd_pg83;
121 	int vpd_pg80_len;
122 	unsigned char *vpd_pg80;
123 	unsigned char current_tag;	/* current tag */
124 	struct scsi_target      *sdev_target;   /* used only for single_lun */
126 	unsigned int	sdev_bflags; /* black/white flags as also found in
130 	unsigned int eh_timeout; /* Error handling timeout */
131 	unsigned removable:1;
132 	unsigned changed:1;	/* Data invalid due to media change */
133 	unsigned busy:1;	/* Used to prevent races */
134 	unsigned lockable:1;	/* Able to prevent media removal */
135 	unsigned locked:1;      /* Media removal disabled */
136 	unsigned borken:1;	/* Tell the Seagate driver to be 
138 	unsigned disconnect:1;	/* can disconnect */
139 	unsigned soft_reset:1;	/* Uses soft reset option */
140 	unsigned sdtr:1;	/* Device supports SDTR messages */
141 	unsigned wdtr:1;	/* Device supports WDTR messages */
142 	unsigned ppr:1;		/* Device supports PPR messages */
143 	unsigned tagged_supported:1;	/* Supports SCSI-II tagged queuing */
144 	unsigned simple_tags:1;	/* simple queue tag messages are enabled */
145 	unsigned was_reset:1;	/* There was a bus reset on the bus for 
147 	unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
149 	unsigned use_10_for_rw:1; /* first try 10-byte read / write */
150 	unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
151 	unsigned no_report_opcodes:1;	/* no REPORT SUPPORTED OPERATION CODES */
152 	unsigned no_write_same:1;	/* no WRITE SAME command */
153 	unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
154 	unsigned skip_ms_page_8:1;	/* do not use MODE SENSE page 0x08 */
155 	unsigned skip_ms_page_3f:1;	/* do not use MODE SENSE page 0x3f */
156 	unsigned skip_vpd_pages:1;	/* do not read VPD pages */
157 	unsigned try_vpd_pages:1;	/* attempt to read VPD pages */
158 	unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
159 	unsigned no_start_on_add:1;	/* do not issue start on add */
160 	unsigned allow_restart:1; /* issue START_UNIT in error handler */
161 	unsigned manage_start_stop:1;	/* Let HLD (sd) manage start/stop */
162 	unsigned start_stop_pwr_cond:1;	/* Set power cond. in START_STOP_UNIT */
163 	unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
164 	unsigned select_no_atn:1;
165 	unsigned fix_capacity:1;	/* READ_CAPACITY is too high by 1 */
166 	unsigned guess_capacity:1;	/* READ_CAPACITY might be too high by 1 */
167 	unsigned retry_hwerror:1;	/* Retry HARDWARE_ERROR */
168 	unsigned last_sector_bug:1;	/* do not use multisector accesses on
170 	unsigned no_read_disc_info:1;	/* Avoid READ_DISC_INFO cmds */
171 	unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
172 	unsigned try_rc_10_first:1;	/* Try READ_CAPACACITY_10 first */
173 	unsigned is_visible:1;	/* is the device visible in sysfs */
174 	unsigned wce_default_on:1;	/* Cache is ON by default */
175 	unsigned no_dif:1;	/* T10 PI (DIF) should be disabled */
199 	struct scsi_device_handler *handler;  argument
202 	enum scsi_device_state sdev_state;  argument
207 	container_of(d, struct scsi_device, sdev_gendev)  argument