101 struct scsi_device {  struct
102 	struct Scsi_Host *host;
103 	struct request_queue *request_queue;
106 	struct list_head    siblings;   /* list of all devices on this host */
107 	struct list_head    same_target_siblings; /* just the devices sharing same target id */
109 	atomic_t device_busy;		/* commands actually active on LLDD */
110 	atomic_t device_blocked;	/* Device returned QUEUE_FULL. */
112 	spinlock_t list_lock;
113 	struct list_head cmd_list;	/* queue of in use SCSI Command structures */
114 	struct list_head starved_entry;
115 	unsigned short queue_depth;	/* How deep of a queue we want */
116 	unsigned short max_queue_depth;	/* max queue depth */
117 	unsigned short last_queue_full_depth; /* These two are used by */
118 	unsigned short last_queue_full_count; /* scsi_track_queue_full() */
119 	unsigned long last_queue_full_time;	/* last queue full time */
120 	unsigned long queue_ramp_up_period;	/* ramp up period in jiffies */
123 	unsigned long last_queue_ramp_up;	/* last queue ramp up time */
125 	unsigned int id, channel;
126 	u64 lun;
127 	unsigned int manufacturer;	/* Manufacturer of device, for using 
129 	unsigned sector_size;	/* size in bytes */
131 	void *hostdata;		/* available to low-level driver */
132 	unsigned char type;
133 	char scsi_level;
134 	char inq_periph_qual;	/* PQ from INQUIRY data */	
135 	struct mutex inquiry_mutex;
136 	unsigned char inquiry_len;	/* valid bytes in 'inquiry' */
137 	unsigned char * inquiry;	/* INQUIRY response data */
138 	const char * vendor;		/* [back_compat] point into 'inquiry' ... */
139 	const char * model;		/* ... after scan; point to static string */
140 	const char * rev;		/* ... "nullnullnullnull" before scan */
143 	struct scsi_vpd __rcu *vpd_pg83;
144 	struct scsi_vpd __rcu *vpd_pg80;
145 	unsigned char current_tag;	/* current tag */
146 	struct scsi_target      *sdev_target;   /* used only for single_lun */
148 	blist_flags_t		sdev_bflags; /* black/white flags as also found in
152 	unsigned int eh_timeout; /* Error handling timeout */
153 	unsigned removable:1;
154 	unsigned changed:1;	/* Data invalid due to media change */
155 	unsigned busy:1;	/* Used to prevent races */
156 	unsigned lockable:1;	/* Able to prevent media removal */
157 	unsigned locked:1;      /* Media removal disabled */
158 	unsigned borken:1;	/* Tell the Seagate driver to be 
160 	unsigned disconnect:1;	/* can disconnect */
161 	unsigned soft_reset:1;	/* Uses soft reset option */
162 	unsigned sdtr:1;	/* Device supports SDTR messages */
163 	unsigned wdtr:1;	/* Device supports WDTR messages */
164 	unsigned ppr:1;		/* Device supports PPR messages */
165 	unsigned tagged_supported:1;	/* Supports SCSI-II tagged queuing */
166 	unsigned simple_tags:1;	/* simple queue tag messages are enabled */
167 	unsigned was_reset:1;	/* There was a bus reset on the bus for 
169 	unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
171 	unsigned use_10_for_rw:1; /* first try 10-byte read / write */
172 	unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
173 	unsigned no_report_opcodes:1;	/* no REPORT SUPPORTED OPERATION CODES */
174 	unsigned no_write_same:1;	/* no WRITE SAME command */
175 	unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
176 	unsigned skip_ms_page_8:1;	/* do not use MODE SENSE page 0x08 */
177 	unsigned skip_ms_page_3f:1;	/* do not use MODE SENSE page 0x3f */
178 	unsigned skip_vpd_pages:1;	/* do not read VPD pages */
179 	unsigned try_vpd_pages:1;	/* attempt to read VPD pages */
180 	unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
181 	unsigned no_start_on_add:1;	/* do not issue start on add */
182 	unsigned allow_restart:1; /* issue START_UNIT in error handler */
183 	unsigned manage_start_stop:1;	/* Let HLD (sd) manage start/stop */
184 	unsigned start_stop_pwr_cond:1;	/* Set power cond. in START_STOP_UNIT */
185 	unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
186 	unsigned select_no_atn:1;
187 	unsigned fix_capacity:1;	/* READ_CAPACITY is too high by 1 */
188 	unsigned guess_capacity:1;	/* READ_CAPACITY might be too high by 1 */
189 	unsigned retry_hwerror:1;	/* Retry HARDWARE_ERROR */
190 	unsigned last_sector_bug:1;	/* do not use multisector accesses on
192 	unsigned no_read_disc_info:1;	/* Avoid READ_DISC_INFO cmds */
193 	unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
194 	unsigned try_rc_10_first:1;	/* Try READ_CAPACACITY_10 first */
195 	unsigned security_supported:1;	/* Supports Security Protocols */
196 	unsigned is_visible:1;	/* is the device visible in sysfs */
197 	unsigned wce_default_on:1;	/* Cache is ON by default */
198 	unsigned no_dif:1;	/* T10 PI (DIF) should be disabled */
199 	unsigned broken_fua:1;		/* Don't set FUA bit */
223 	struct scsi_device_handler *handler;  argument
228 	enum scsi_device_state sdev_state;  argument
234 	container_of(d, struct scsi_device, sdev_gendev)  argument