1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _SCSI_SCSI_DEVICE_H
3 #define _SCSI_SCSI_DEVICE_H
5 #include <linux/list.h>
6 #include <linux/spinlock.h>
7 #include <linux/workqueue.h>
8 #include <linux/blk-mq.h>
10 #include <linux/atomic.h>
11 #include <linux/sbitmap.h>
18 struct scsi_sense_hdr;
20 typedef __u64 __bitwise blist_flags_t;
22 #define SCSI_SENSE_BUFFERSIZE 96
24 struct scsi_mode_data {
26 __u16 block_descriptor_length;
34 * sdev state: If you alter this, you also need to alter scsi_sysfs.c
35 * (for the ascii descriptions) and the state model enforcer:
36 * scsi_lib:scsi_device_set_state().
38 enum scsi_device_state {
39 SDEV_CREATED = 1, /* device created but not added to sysfs
40 * Only internal commands allowed (for inq) */
41 SDEV_RUNNING, /* device properly configured
42 * All commands allowed */
43 SDEV_CANCEL, /* beginning to delete device
44 * Only error handler commands allowed */
45 SDEV_DEL, /* device deleted
46 * no commands allowed */
47 SDEV_QUIESCE, /* Device quiescent. No block commands
48 * will be accepted, only specials (which
49 * originate in the mid-layer) */
50 SDEV_OFFLINE, /* Device offlined (by error handling or
52 SDEV_TRANSPORT_OFFLINE, /* Offlined by transport class error handler */
53 SDEV_BLOCK, /* Device blocked by scsi lld. No
54 * scsi commands from user or midlayer
55 * should be issued to the scsi
57 SDEV_CREATED_BLOCK, /* same as above but for created devices */
61 SCSI_SCAN_INITIAL = 0,
66 enum scsi_device_event {
67 SDEV_EVT_MEDIA_CHANGE = 1, /* media has changed */
68 SDEV_EVT_INQUIRY_CHANGE_REPORTED, /* 3F 03 UA reported */
69 SDEV_EVT_CAPACITY_CHANGE_REPORTED, /* 2A 09 UA reported */
70 SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED, /* 38 07 UA reported */
71 SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED, /* 2A 01 UA reported */
72 SDEV_EVT_LUN_CHANGE_REPORTED, /* 3F 0E UA reported */
73 SDEV_EVT_ALUA_STATE_CHANGE_REPORTED, /* 2A 06 UA reported */
74 SDEV_EVT_POWER_ON_RESET_OCCURRED, /* 29 00 UA reported */
76 SDEV_EVT_FIRST = SDEV_EVT_MEDIA_CHANGE,
77 SDEV_EVT_LAST = SDEV_EVT_POWER_ON_RESET_OCCURRED,
79 SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1
83 enum scsi_device_event evt_type;
84 struct list_head node;
86 /* put union of data structures, for non-simple event types,
92 * struct scsi_vpd - SCSI Vital Product Data
93 * @rcu: For kfree_rcu().
94 * @len: Length in bytes of @data.
95 * @data: VPD data as defined in various T10 SCSI standard documents.
100 unsigned char data[];
103 enum scsi_vpd_parameters {
104 SCSI_VPD_HEADER_SIZE = 4,
108 struct Scsi_Host *host;
109 struct request_queue *request_queue;
111 /* the next two are protected by the host->host_lock */
112 struct list_head siblings; /* list of all devices on this host */
113 struct list_head same_target_siblings; /* just the devices sharing same target id */
115 struct sbitmap budget_map;
116 atomic_t device_blocked; /* Device returned QUEUE_FULL. */
119 spinlock_t list_lock;
120 struct list_head starved_entry;
121 unsigned short queue_depth; /* How deep of a queue we want */
122 unsigned short max_queue_depth; /* max queue depth */
123 unsigned short last_queue_full_depth; /* These two are used by */
124 unsigned short last_queue_full_count; /* scsi_track_queue_full() */
125 unsigned long last_queue_full_time; /* last queue full time */
126 unsigned long queue_ramp_up_period; /* ramp up period in jiffies */
127 #define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ)
129 unsigned long last_queue_ramp_up; /* last queue ramp up time */
131 unsigned int id, channel;
133 unsigned int manufacturer; /* Manufacturer of device, for using
134 * vendor-specific cmd's */
135 unsigned sector_size; /* size in bytes */
137 void *hostdata; /* available to low-level driver */
140 char inq_periph_qual; /* PQ from INQUIRY data */
141 struct mutex inquiry_mutex;
142 unsigned char inquiry_len; /* valid bytes in 'inquiry' */
143 unsigned char * inquiry; /* INQUIRY response data */
144 const char * vendor; /* [back_compat] point into 'inquiry' ... */
145 const char * model; /* ... after scan; point to static string */
146 const char * rev; /* ... "nullnullnullnull" before scan */
148 #define SCSI_DEFAULT_VPD_LEN 255 /* default SCSI VPD page size (max) */
149 struct scsi_vpd __rcu *vpd_pg0;
150 struct scsi_vpd __rcu *vpd_pg83;
151 struct scsi_vpd __rcu *vpd_pg80;
152 struct scsi_vpd __rcu *vpd_pg89;
153 struct scsi_vpd __rcu *vpd_pgb0;
154 struct scsi_vpd __rcu *vpd_pgb1;
155 struct scsi_vpd __rcu *vpd_pgb2;
157 struct scsi_target *sdev_target;
159 blist_flags_t sdev_bflags; /* black/white flags as also found in
160 * scsi_devinfo.[hc]. For now used only to
161 * pass settings from slave_alloc to scsi
163 unsigned int eh_timeout; /* Error handling timeout */
166 * If true, let the high-level device driver (sd) manage the device
167 * power state for system suspend/resume (suspend to RAM and
168 * hibernation) operations.
170 unsigned manage_system_start_stop:1;
173 * If true, let the high-level device driver (sd) manage the device
174 * power state for runtime device suspand and resume operations.
176 unsigned manage_runtime_start_stop:1;
179 * If true, let the high-level device driver (sd) manage the device
180 * power state for system shutdown (power off) operations.
182 unsigned manage_shutdown:1;
185 * If set and if the device is runtime suspended, ask the high-level
186 * device driver (sd) to force a runtime resume of the device.
188 unsigned force_runtime_start_on_system_start:1;
190 unsigned removable:1;
191 unsigned changed:1; /* Data invalid due to media change */
192 unsigned busy:1; /* Used to prevent races */
193 unsigned lockable:1; /* Able to prevent media removal */
194 unsigned locked:1; /* Media removal disabled */
195 unsigned borken:1; /* Tell the Seagate driver to be
196 * painfully slow on this device */
197 unsigned disconnect:1; /* can disconnect */
198 unsigned soft_reset:1; /* Uses soft reset option */
199 unsigned sdtr:1; /* Device supports SDTR messages */
200 unsigned wdtr:1; /* Device supports WDTR messages */
201 unsigned ppr:1; /* Device supports PPR messages */
202 unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */
203 unsigned simple_tags:1; /* simple queue tag messages are enabled */
204 unsigned was_reset:1; /* There was a bus reset on the bus for
206 unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
207 * because we did a bus reset. */
208 unsigned use_10_for_rw:1; /* first try 10-byte read / write */
209 unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
210 unsigned set_dbd_for_ms:1; /* Set "DBD" field in mode sense */
211 unsigned no_report_opcodes:1; /* no REPORT SUPPORTED OPERATION CODES */
212 unsigned no_write_same:1; /* no WRITE SAME command */
213 unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
214 unsigned use_16_for_sync:1; /* Use sync (16) over sync (10) */
215 unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */
216 unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */
217 unsigned skip_vpd_pages:1; /* do not read VPD pages */
218 unsigned try_vpd_pages:1; /* attempt to read VPD pages */
219 unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
220 unsigned no_start_on_add:1; /* do not issue start on add */
221 unsigned allow_restart:1; /* issue START_UNIT in error handler */
222 unsigned no_start_on_resume:1; /* Do not issue START_STOP_UNIT on resume */
223 unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */
224 unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
225 unsigned select_no_atn:1;
226 unsigned fix_capacity:1; /* READ_CAPACITY is too high by 1 */
227 unsigned guess_capacity:1; /* READ_CAPACITY might be too high by 1 */
228 unsigned retry_hwerror:1; /* Retry HARDWARE_ERROR */
229 unsigned last_sector_bug:1; /* do not use multisector accesses on
230 SD_LAST_BUGGY_SECTORS */
231 unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */
232 unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
233 unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */
234 unsigned security_supported:1; /* Supports Security Protocols */
235 unsigned is_visible:1; /* is the device visible in sysfs */
236 unsigned wce_default_on:1; /* Cache is ON by default */
237 unsigned no_dif:1; /* T10 PI (DIF) should be disabled */
238 unsigned broken_fua:1; /* Don't set FUA bit */
239 unsigned lun_in_cdb:1; /* Store LUN bits in CDB[1] */
240 unsigned unmap_limit_for_ws:1; /* Use the UNMAP limit for WRITE SAME */
241 unsigned rpm_autosuspend:1; /* Enable runtime autosuspend at device
243 unsigned ignore_media_change:1; /* Ignore MEDIA CHANGE on resume */
244 unsigned silence_suspend:1; /* Do not print runtime PM related messages */
245 unsigned no_vpd_size:1; /* No VPD size reported in header */
247 unsigned cdl_supported:1; /* Command duration limits supported */
248 unsigned cdl_enable:1; /* Enable/disable Command duration limits */
250 unsigned int queue_stopped; /* request queue is quiesced */
251 bool offline_already; /* Device offline message logged */
253 atomic_t disk_events_disable_depth; /* disable depth for disk events */
255 DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
256 DECLARE_BITMAP(pending_events, SDEV_EVT_MAXBITS); /* pending events */
257 struct list_head event_list; /* asserted events */
258 struct work_struct event_work;
260 unsigned int max_device_blocked; /* what device_blocked counts down from */
261 #define SCSI_DEFAULT_DEVICE_BLOCKED 3
263 atomic_t iorequest_cnt;
268 struct device sdev_gendev,
271 struct work_struct requeue_work;
273 struct scsi_device_handler *handler;
276 size_t dma_drain_len;
279 unsigned int sg_timeout;
280 unsigned int sg_reserved_size;
282 struct bsg_device *bsg_dev;
283 unsigned char access_state;
284 struct mutex state_mutex;
285 enum scsi_device_state sdev_state;
286 struct task_struct *quiesced_by;
287 unsigned long sdev_data[];
288 } __attribute__((aligned(sizeof(unsigned long))));
290 #define to_scsi_device(d) \
291 container_of(d, struct scsi_device, sdev_gendev)
292 #define class_to_sdev(d) \
293 container_of(d, struct scsi_device, sdev_dev)
294 #define transport_class_to_sdev(class_dev) \
295 to_scsi_device(class_dev->parent)
297 #define sdev_dbg(sdev, fmt, a...) \
298 dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
301 * like scmd_printk, but the device name is passed in
302 * as a string pointer
305 sdev_prefix_printk(const char *, const struct scsi_device *, const char *,
308 #define sdev_printk(l, sdev, fmt, a...) \
309 sdev_prefix_printk(l, sdev, NULL, fmt, ##a)
312 scmd_printk(const char *, const struct scsi_cmnd *, const char *, ...);
314 #define scmd_dbg(scmd, fmt, a...) \
316 struct request *__rq = scsi_cmd_to_rq((scmd)); \
319 sdev_dbg((scmd)->device, "[%s] " fmt, \
320 __rq->q->disk->disk_name, ##a); \
322 sdev_dbg((scmd)->device, fmt, ##a); \
325 enum scsi_target_state {
329 STARGET_CREATED_REMOVE,
334 * scsi_target: representation of a scsi target, for now, this is only
335 * used for single_lun devices. If no one has active IO to the target,
336 * starget_sdev_user is NULL, else it points to the active sdev.
339 struct scsi_device *starget_sdev_user;
340 struct list_head siblings;
341 struct list_head devices;
343 struct kref reap_ref; /* last put renders target invisible */
344 unsigned int channel;
345 unsigned int id; /* target id ... replace
346 * scsi_device.id eventually */
347 unsigned int create:1; /* signal that it needs to be added */
348 unsigned int single_lun:1; /* Indicates we should only
349 * allow I/O to one of the luns
350 * for the device at a time. */
351 unsigned int pdt_1f_for_no_lun:1; /* PDT = 0x1f
352 * means no lun present. */
353 unsigned int no_report_luns:1; /* Don't use
354 * REPORT LUNS for scanning. */
355 unsigned int expecting_lun_change:1; /* A device has reported
356 * a 3F/0E UA, other devices on
357 * the same target will also. */
358 /* commands actually active on LLD. */
359 atomic_t target_busy;
360 atomic_t target_blocked;
363 * LLDs should set this in the slave_alloc host template callout.
364 * If set to zero then there is not limit.
366 unsigned int can_queue;
367 unsigned int max_target_blocked;
368 #define SCSI_DEFAULT_TARGET_BLOCKED 3
371 enum scsi_target_state state;
372 void *hostdata; /* available to low-level driver */
373 unsigned long starget_data[]; /* for the transport */
374 /* starget_data must be the last element!!!! */
375 } __attribute__((aligned(sizeof(unsigned long))));
377 #define to_scsi_target(d) container_of(d, struct scsi_target, dev)
378 static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
380 return to_scsi_target(sdev->sdev_gendev.parent);
382 #define transport_class_to_starget(class_dev) \
383 to_scsi_target(class_dev->parent)
385 #define starget_printk(prefix, starget, fmt, a...) \
386 dev_printk(prefix, &(starget)->dev, fmt, ##a)
388 extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
389 uint, uint, u64, void *hostdata);
390 extern int scsi_add_device(struct Scsi_Host *host, uint channel,
391 uint target, u64 lun);
392 extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
393 extern void scsi_remove_device(struct scsi_device *);
394 extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
395 void scsi_attach_vpd(struct scsi_device *sdev);
396 void scsi_cdl_check(struct scsi_device *sdev);
397 int scsi_cdl_enable(struct scsi_device *sdev, bool enable);
399 extern struct scsi_device *scsi_device_from_queue(struct request_queue *q);
400 extern int __must_check scsi_device_get(struct scsi_device *);
401 extern void scsi_device_put(struct scsi_device *);
402 extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
404 extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *,
406 extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *,
408 extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *,
410 extern void starget_for_each_device(struct scsi_target *, void *,
411 void (*fn)(struct scsi_device *, void *));
412 extern void __starget_for_each_device(struct scsi_target *, void *,
413 void (*fn)(struct scsi_device *,
416 /* only exposed to implement shost_for_each_device */
417 extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *,
418 struct scsi_device *);
421 * shost_for_each_device - iterate over all devices of a host
422 * @sdev: the &struct scsi_device to use as a cursor
423 * @shost: the &struct scsi_host to iterate over
425 * Iterator that returns each device attached to @shost. This loop
426 * takes a reference on each device and releases it at the end. If
427 * you break out of the loop, you must call scsi_device_put(sdev).
429 #define shost_for_each_device(sdev, shost) \
430 for ((sdev) = __scsi_iterate_devices((shost), NULL); \
432 (sdev) = __scsi_iterate_devices((shost), (sdev)))
435 * __shost_for_each_device - iterate over all devices of a host (UNLOCKED)
436 * @sdev: the &struct scsi_device to use as a cursor
437 * @shost: the &struct scsi_host to iterate over
439 * Iterator that returns each device attached to @shost. It does _not_
440 * take a reference on the scsi_device, so the whole loop must be
441 * protected by shost->host_lock.
443 * Note: The only reason to use this is because you need to access the
444 * device list in interrupt context. Otherwise you really want to use
445 * shost_for_each_device instead.
447 #define __shost_for_each_device(sdev, shost) \
448 list_for_each_entry((sdev), &((shost)->__devices), siblings)
450 extern int scsi_change_queue_depth(struct scsi_device *, int);
451 extern int scsi_track_queue_full(struct scsi_device *, int);
453 extern int scsi_set_medium_removal(struct scsi_device *, char);
455 int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
456 int subpage, unsigned char *buffer, int len, int timeout,
457 int retries, struct scsi_mode_data *data,
458 struct scsi_sense_hdr *);
459 extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp,
460 unsigned char *buffer, int len, int timeout,
461 int retries, struct scsi_mode_data *data,
462 struct scsi_sense_hdr *);
463 extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout,
464 int retries, struct scsi_sense_hdr *sshdr);
465 extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf,
467 int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,
468 unsigned int len, unsigned char opcode,
470 extern int scsi_device_set_state(struct scsi_device *sdev,
471 enum scsi_device_state state);
472 extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type,
474 extern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt);
475 extern void sdev_evt_send_simple(struct scsi_device *sdev,
476 enum scsi_device_event evt_type, gfp_t gfpflags);
477 extern int scsi_device_quiesce(struct scsi_device *sdev);
478 extern void scsi_device_resume(struct scsi_device *sdev);
479 extern void scsi_target_quiesce(struct scsi_target *);
480 extern void scsi_target_resume(struct scsi_target *);
481 extern void scsi_scan_target(struct device *parent, unsigned int channel,
482 unsigned int id, u64 lun,
483 enum scsi_scan_mode rescan);
484 extern void scsi_target_reap(struct scsi_target *);
485 void scsi_block_targets(struct Scsi_Host *shost, struct device *dev);
486 extern void scsi_target_unblock(struct device *, enum scsi_device_state);
487 extern void scsi_remove_target(struct device *);
488 extern const char *scsi_device_state_name(enum scsi_device_state);
489 extern int scsi_is_sdev_device(const struct device *);
490 extern int scsi_is_target_device(const struct device *);
491 extern void scsi_sanitize_inquiry_string(unsigned char *s, int len);
493 /* Optional arguments to scsi_execute_cmd */
494 struct scsi_exec_args {
495 unsigned char *sense; /* sense buffer */
496 unsigned int sense_len; /* sense buffer len */
497 struct scsi_sense_hdr *sshdr; /* decoded sense header */
498 blk_mq_req_flags_t req_flags; /* BLK_MQ_REQ flags */
499 int scmd_flags; /* SCMD flags */
500 int *resid; /* residual length */
503 int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
504 blk_opf_t opf, void *buffer, unsigned int bufflen,
505 int timeout, int retries,
506 const struct scsi_exec_args *args);
508 extern void sdev_disable_disk_events(struct scsi_device *sdev);
509 extern void sdev_enable_disk_events(struct scsi_device *sdev);
510 extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t);
511 extern int scsi_vpd_tpg_id(struct scsi_device *, int *);
514 extern int scsi_autopm_get_device(struct scsi_device *);
515 extern void scsi_autopm_put_device(struct scsi_device *);
517 static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; }
518 static inline void scsi_autopm_put_device(struct scsi_device *d) {}
519 #endif /* CONFIG_PM */
521 static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
523 return device_reprobe(&sdev->sdev_gendev);
526 static inline unsigned int sdev_channel(struct scsi_device *sdev)
528 return sdev->channel;
531 static inline unsigned int sdev_id(struct scsi_device *sdev)
536 #define scmd_id(scmd) sdev_id((scmd)->device)
537 #define scmd_channel(scmd) sdev_channel((scmd)->device)
540 * checks for positions of the SCSI state machine
542 static inline int scsi_device_online(struct scsi_device *sdev)
544 return (sdev->sdev_state != SDEV_OFFLINE &&
545 sdev->sdev_state != SDEV_TRANSPORT_OFFLINE &&
546 sdev->sdev_state != SDEV_DEL);
548 static inline int scsi_device_blocked(struct scsi_device *sdev)
550 return sdev->sdev_state == SDEV_BLOCK ||
551 sdev->sdev_state == SDEV_CREATED_BLOCK;
553 static inline int scsi_device_created(struct scsi_device *sdev)
555 return sdev->sdev_state == SDEV_CREATED ||
556 sdev->sdev_state == SDEV_CREATED_BLOCK;
559 int scsi_internal_device_block_nowait(struct scsi_device *sdev);
560 int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
561 enum scsi_device_state new_state);
563 /* accessor functions for the SCSI parameters */
564 static inline int scsi_device_sync(struct scsi_device *sdev)
568 static inline int scsi_device_wide(struct scsi_device *sdev)
572 static inline int scsi_device_dt(struct scsi_device *sdev)
576 static inline int scsi_device_dt_only(struct scsi_device *sdev)
578 if (sdev->inquiry_len < 57)
580 return (sdev->inquiry[56] & 0x0c) == 0x04;
582 static inline int scsi_device_ius(struct scsi_device *sdev)
584 if (sdev->inquiry_len < 57)
586 return sdev->inquiry[56] & 0x01;
588 static inline int scsi_device_qas(struct scsi_device *sdev)
590 if (sdev->inquiry_len < 57)
592 return sdev->inquiry[56] & 0x02;
594 static inline int scsi_device_enclosure(struct scsi_device *sdev)
596 return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1;
599 static inline int scsi_device_protection(struct scsi_device *sdev)
604 return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);
607 static inline int scsi_device_tpgs(struct scsi_device *sdev)
609 return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0;
613 * scsi_device_supports_vpd - test if a device supports VPD pages
614 * @sdev: the &struct scsi_device to test
616 * If the 'try_vpd_pages' flag is set it takes precedence.
617 * Otherwise we will assume VPD pages are supported if the
618 * SCSI level is at least SPC-3 and 'skip_vpd_pages' is not set.
620 static inline int scsi_device_supports_vpd(struct scsi_device *sdev)
622 /* Attempt VPD inquiry if the device blacklist explicitly calls
625 if (sdev->try_vpd_pages)
628 * Although VPD inquiries can go to SCSI-2 type devices,
629 * some USB ones crash on receiving them, and the pages
630 * we currently ask for are mandatory for SPC-2 and beyond
632 if (sdev->scsi_level >= SCSI_SPC_2 && !sdev->skip_vpd_pages)
637 static inline int scsi_device_busy(struct scsi_device *sdev)
639 return sbitmap_weight(&sdev->budget_map);
642 #define MODULE_ALIAS_SCSI_DEVICE(type) \
643 MODULE_ALIAS("scsi:t-" __stringify(type) "*")
644 #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"
646 #endif /* _SCSI_SCSI_DEVICE_H */