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1 | #ifndef _SCSI_SCSI_DEVICE_H |
2 | #define _SCSI_SCSI_DEVICE_H |
3 | |
4 | #include <linux/list.h> |
5 | #include <linux/spinlock.h> |
6 | #include <linux/workqueue.h> |
7 | #include <linux/blkdev.h> |
8 | #include <scsi/scsi.h> |
9 | #include <linux/atomic.h> |
10 | |
11 | struct device; |
12 | struct request_queue; |
13 | struct scsi_cmnd; |
14 | struct scsi_lun; |
15 | struct scsi_sense_hdr; |
16 | |
17 | struct scsi_mode_data { |
18 | __u32 length; |
19 | __u16 block_descriptor_length; |
20 | __u8 medium_type; |
21 | __u8 device_specific; |
22 | __u8 header_length; |
23 | __u8 longlba:1; |
24 | }; |
25 | |
26 | /* |
27 | * sdev state: If you alter this, you also need to alter scsi_sysfs.c |
28 | * (for the ascii descriptions) and the state model enforcer: |
29 | * scsi_lib:scsi_device_set_state(). |
30 | */ |
31 | enum scsi_device_state { |
32 | SDEV_CREATED = 1, /* device created but not added to sysfs |
33 | * Only internal commands allowed (for inq) */ |
34 | SDEV_RUNNING, /* device properly configured |
35 | * All commands allowed */ |
36 | SDEV_CANCEL, /* beginning to delete device |
37 | * Only error handler commands allowed */ |
38 | SDEV_DEL, /* device deleted |
39 | * no commands allowed */ |
40 | SDEV_QUIESCE, /* Device quiescent. No block commands |
41 | * will be accepted, only specials (which |
42 | * originate in the mid-layer) */ |
43 | SDEV_OFFLINE, /* Device offlined (by error handling or |
44 | * user request */ |
45 | SDEV_TRANSPORT_OFFLINE, /* Offlined by transport class error handler */ |
46 | SDEV_BLOCK, /* Device blocked by scsi lld. No |
47 | * scsi commands from user or midlayer |
48 | * should be issued to the scsi |
49 | * lld. */ |
50 | SDEV_CREATED_BLOCK, /* same as above but for created devices */ |
51 | }; |
52 | |
53 | enum scsi_device_event { |
54 | SDEV_EVT_MEDIA_CHANGE = 1, /* media has changed */ |
55 | |
56 | SDEV_EVT_LAST = SDEV_EVT_MEDIA_CHANGE, |
57 | SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1 |
58 | }; |
59 | |
60 | struct scsi_event { |
61 | enum scsi_device_event evt_type; |
62 | struct list_head node; |
63 | |
64 | /* put union of data structures, for non-simple event types, |
65 | * here |
66 | */ |
67 | }; |
68 | |
69 | struct scsi_device { |
70 | struct Scsi_Host *host; |
71 | struct request_queue *request_queue; |
72 | |
73 | /* the next two are protected by the host->host_lock */ |
74 | struct list_head siblings; /* list of all devices on this host */ |
75 | struct list_head same_target_siblings; /* just the devices sharing same target id */ |
76 | |
77 | /* this is now protected by the request_queue->queue_lock */ |
78 | unsigned int device_busy; /* commands actually active on |
79 | * low-level. protected by queue_lock. */ |
80 | spinlock_t list_lock; |
81 | struct list_head cmd_list; /* queue of in use SCSI Command structures */ |
82 | struct list_head starved_entry; |
83 | struct scsi_cmnd *current_cmnd; /* currently active command */ |
84 | unsigned short queue_depth; /* How deep of a queue we want */ |
85 | unsigned short max_queue_depth; /* max queue depth */ |
86 | unsigned short last_queue_full_depth; /* These two are used by */ |
87 | unsigned short last_queue_full_count; /* scsi_track_queue_full() */ |
88 | unsigned long last_queue_full_time; /* last queue full time */ |
89 | unsigned long queue_ramp_up_period; /* ramp up period in jiffies */ |
90 | #define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ) |
91 | |
92 | unsigned long last_queue_ramp_up; /* last queue ramp up time */ |
93 | |
94 | unsigned int id, lun, channel; |
95 | |
96 | unsigned int manufacturer; /* Manufacturer of device, for using |
97 | * vendor-specific cmd's */ |
98 | unsigned sector_size; /* size in bytes */ |
99 | |
100 | void *hostdata; /* available to low-level driver */ |
101 | char type; |
102 | char scsi_level; |
103 | char inq_periph_qual; /* PQ from INQUIRY data */ |
104 | unsigned char inquiry_len; /* valid bytes in 'inquiry' */ |
105 | unsigned char * inquiry; /* INQUIRY response data */ |
106 | const char * vendor; /* [back_compat] point into 'inquiry' ... */ |
107 | const char * model; /* ... after scan; point to static string */ |
108 | const char * rev; /* ... "nullnullnullnull" before scan */ |
109 | unsigned char current_tag; /* current tag */ |
110 | struct scsi_target *sdev_target; /* used only for single_lun */ |
111 | |
112 | unsigned int sdev_bflags; /* black/white flags as also found in |
113 | * scsi_devinfo.[hc]. For now used only to |
114 | * pass settings from slave_alloc to scsi |
115 | * core. */ |
116 | unsigned int eh_timeout; /* Error handling timeout */ |
117 | unsigned writeable:1; |
118 | unsigned removable:1; |
119 | unsigned changed:1; /* Data invalid due to media change */ |
120 | unsigned busy:1; /* Used to prevent races */ |
121 | unsigned lockable:1; /* Able to prevent media removal */ |
122 | unsigned locked:1; /* Media removal disabled */ |
123 | unsigned borken:1; /* Tell the Seagate driver to be |
124 | * painfully slow on this device */ |
125 | unsigned disconnect:1; /* can disconnect */ |
126 | unsigned soft_reset:1; /* Uses soft reset option */ |
127 | unsigned sdtr:1; /* Device supports SDTR messages */ |
128 | unsigned wdtr:1; /* Device supports WDTR messages */ |
129 | unsigned ppr:1; /* Device supports PPR messages */ |
130 | unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */ |
131 | unsigned simple_tags:1; /* simple queue tag messages are enabled */ |
132 | unsigned ordered_tags:1;/* ordered queue tag messages are enabled */ |
133 | unsigned was_reset:1; /* There was a bus reset on the bus for |
134 | * this device */ |
135 | unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN |
136 | * because we did a bus reset. */ |
137 | unsigned use_10_for_rw:1; /* first try 10-byte read / write */ |
138 | unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */ |
139 | unsigned no_report_opcodes:1; /* no REPORT SUPPORTED OPERATION CODES */ |
140 | unsigned no_write_same:1; /* no WRITE SAME command */ |
141 | unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */ |
142 | unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */ |
143 | unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */ |
144 | unsigned skip_vpd_pages:1; /* do not read VPD pages */ |
145 | unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */ |
146 | unsigned no_start_on_add:1; /* do not issue start on add */ |
147 | unsigned allow_restart:1; /* issue START_UNIT in error handler */ |
148 | unsigned manage_start_stop:1; /* Let HLD (sd) manage start/stop */ |
149 | unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */ |
150 | unsigned no_uld_attach:1; /* disable connecting to upper level drivers */ |
151 | unsigned select_no_atn:1; |
152 | unsigned fix_capacity:1; /* READ_CAPACITY is too high by 1 */ |
153 | unsigned guess_capacity:1; /* READ_CAPACITY might be too high by 1 */ |
154 | unsigned retry_hwerror:1; /* Retry HARDWARE_ERROR */ |
155 | unsigned last_sector_bug:1; /* do not use multisector accesses on |
156 | SD_LAST_BUGGY_SECTORS */ |
157 | unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */ |
158 | unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */ |
159 | unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */ |
160 | unsigned is_visible:1; /* is the device visible in sysfs */ |
161 | unsigned wce_default_on:1; /* Cache is ON by default */ |
162 | unsigned no_dif:1; /* T10 PI (DIF) should be disabled */ |
163 | |
164 | atomic_t disk_events_disable_depth; /* disable depth for disk events */ |
165 | |
166 | DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */ |
167 | struct list_head event_list; /* asserted events */ |
168 | struct work_struct event_work; |
169 | |
170 | unsigned int device_blocked; /* Device returned QUEUE_FULL. */ |
171 | |
172 | unsigned int max_device_blocked; /* what device_blocked counts down from */ |
173 | #define SCSI_DEFAULT_DEVICE_BLOCKED 3 |
174 | |
175 | atomic_t iorequest_cnt; |
176 | atomic_t iodone_cnt; |
177 | atomic_t ioerr_cnt; |
178 | |
179 | struct device sdev_gendev, |
180 | sdev_dev; |
181 | |
182 | struct execute_work ew; /* used to get process context on put */ |
183 | struct work_struct requeue_work; |
184 | |
185 | struct scsi_dh_data *scsi_dh_data; |
186 | enum scsi_device_state sdev_state; |
187 | unsigned long sdev_data[0]; |
188 | } __attribute__((aligned(sizeof(unsigned long)))); |
189 | |
190 | struct scsi_dh_devlist { |
191 | char *vendor; |
192 | char *model; |
193 | }; |
194 | |
195 | typedef void (*activate_complete)(void *, int); |
196 | struct scsi_device_handler { |
197 | /* Used by the infrastructure */ |
198 | struct list_head list; /* list of scsi_device_handlers */ |
199 | |
200 | /* Filled by the hardware handler */ |
201 | struct module *module; |
202 | const char *name; |
203 | const struct scsi_dh_devlist *devlist; |
204 | int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *); |
205 | int (*attach)(struct scsi_device *); |
206 | void (*detach)(struct scsi_device *); |
207 | int (*activate)(struct scsi_device *, activate_complete, void *); |
208 | int (*prep_fn)(struct scsi_device *, struct request *); |
209 | int (*set_params)(struct scsi_device *, const char *); |
210 | bool (*match)(struct scsi_device *); |
211 | }; |
212 | |
213 | struct scsi_dh_data { |
214 | struct scsi_device_handler *scsi_dh; |
215 | struct scsi_device *sdev; |
216 | struct kref kref; |
217 | char buf[0]; |
218 | }; |
219 | |
220 | #define to_scsi_device(d) \ |
221 | container_of(d, struct scsi_device, sdev_gendev) |
222 | #define class_to_sdev(d) \ |
223 | container_of(d, struct scsi_device, sdev_dev) |
224 | #define transport_class_to_sdev(class_dev) \ |
225 | to_scsi_device(class_dev->parent) |
226 | |
227 | #define sdev_printk(prefix, sdev, fmt, a...) \ |
228 | dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a) |
229 | |
230 | #define scmd_printk(prefix, scmd, fmt, a...) \ |
231 | (scmd)->request->rq_disk ? \ |
232 | sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \ |
233 | (scmd)->request->rq_disk->disk_name, ##a) : \ |
234 | sdev_printk(prefix, (scmd)->device, fmt, ##a) |
235 | |
236 | enum scsi_target_state { |
237 | STARGET_CREATED = 1, |
238 | STARGET_RUNNING, |
239 | STARGET_DEL, |
240 | }; |
241 | |
242 | /* |
243 | * scsi_target: representation of a scsi target, for now, this is only |
244 | * used for single_lun devices. If no one has active IO to the target, |
245 | * starget_sdev_user is NULL, else it points to the active sdev. |
246 | */ |
247 | struct scsi_target { |
248 | struct scsi_device *starget_sdev_user; |
249 | struct list_head siblings; |
250 | struct list_head devices; |
251 | struct device dev; |
252 | unsigned int reap_ref; /* protected by the host lock */ |
253 | unsigned int channel; |
254 | unsigned int id; /* target id ... replace |
255 | * scsi_device.id eventually */ |
256 | unsigned int create:1; /* signal that it needs to be added */ |
257 | unsigned int single_lun:1; /* Indicates we should only |
258 | * allow I/O to one of the luns |
259 | * for the device at a time. */ |
260 | unsigned int pdt_1f_for_no_lun:1; /* PDT = 0x1f |
261 | * means no lun present. */ |
262 | unsigned int no_report_luns:1; /* Don't use |
263 | * REPORT LUNS for scanning. */ |
264 | /* commands actually active on LLD. protected by host lock. */ |
265 | unsigned int target_busy; |
266 | /* |
267 | * LLDs should set this in the slave_alloc host template callout. |
268 | * If set to zero then there is not limit. |
269 | */ |
270 | unsigned int can_queue; |
271 | unsigned int target_blocked; |
272 | unsigned int max_target_blocked; |
273 | #define SCSI_DEFAULT_TARGET_BLOCKED 3 |
274 | |
275 | char scsi_level; |
276 | struct execute_work ew; |
277 | enum scsi_target_state state; |
278 | void *hostdata; /* available to low-level driver */ |
279 | unsigned long starget_data[0]; /* for the transport */ |
280 | /* starget_data must be the last element!!!! */ |
281 | } __attribute__((aligned(sizeof(unsigned long)))); |
282 | |
283 | #define to_scsi_target(d) container_of(d, struct scsi_target, dev) |
284 | static inline struct scsi_target *scsi_target(struct scsi_device *sdev) |
285 | { |
286 | return to_scsi_target(sdev->sdev_gendev.parent); |
287 | } |
288 | #define transport_class_to_starget(class_dev) \ |
289 | to_scsi_target(class_dev->parent) |
290 | |
291 | #define starget_printk(prefix, starget, fmt, a...) \ |
292 | dev_printk(prefix, &(starget)->dev, fmt, ##a) |
293 | |
294 | extern struct scsi_device *__scsi_add_device(struct Scsi_Host *, |
295 | uint, uint, uint, void *hostdata); |
296 | extern int scsi_add_device(struct Scsi_Host *host, uint channel, |
297 | uint target, uint lun); |
298 | extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh); |
299 | extern void scsi_remove_device(struct scsi_device *); |
300 | extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh); |
301 | |
302 | extern int scsi_device_get(struct scsi_device *); |
303 | extern void scsi_device_put(struct scsi_device *); |
304 | extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *, |
305 | uint, uint, uint); |
306 | extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *, |
307 | uint, uint, uint); |
308 | extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *, |
309 | uint); |
310 | extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *, |
311 | uint); |
312 | extern void starget_for_each_device(struct scsi_target *, void *, |
313 | void (*fn)(struct scsi_device *, void *)); |
314 | extern void __starget_for_each_device(struct scsi_target *, void *, |
315 | void (*fn)(struct scsi_device *, |
316 | void *)); |
317 | |
318 | /* only exposed to implement shost_for_each_device */ |
319 | extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *, |
320 | struct scsi_device *); |
321 | |
322 | /** |
323 | * shost_for_each_device - iterate over all devices of a host |
324 | * @sdev: the &struct scsi_device to use as a cursor |
325 | * @shost: the &struct scsi_host to iterate over |
326 | * |
327 | * Iterator that returns each device attached to @shost. This loop |
328 | * takes a reference on each device and releases it at the end. If |
329 | * you break out of the loop, you must call scsi_device_put(sdev). |
330 | */ |
331 | #define shost_for_each_device(sdev, shost) \ |
332 | for ((sdev) = __scsi_iterate_devices((shost), NULL); \ |
333 | (sdev); \ |
334 | (sdev) = __scsi_iterate_devices((shost), (sdev))) |
335 | |
336 | /** |
337 | * __shost_for_each_device - iterate over all devices of a host (UNLOCKED) |
338 | * @sdev: the &struct scsi_device to use as a cursor |
339 | * @shost: the &struct scsi_host to iterate over |
340 | * |
341 | * Iterator that returns each device attached to @shost. It does _not_ |
342 | * take a reference on the scsi_device, so the whole loop must be |
343 | * protected by shost->host_lock. |
344 | * |
345 | * Note: The only reason to use this is because you need to access the |
346 | * device list in interrupt context. Otherwise you really want to use |
347 | * shost_for_each_device instead. |
348 | */ |
349 | #define __shost_for_each_device(sdev, shost) \ |
350 | list_for_each_entry((sdev), &((shost)->__devices), siblings) |
351 | |
352 | extern void scsi_adjust_queue_depth(struct scsi_device *, int, int); |
353 | extern int scsi_track_queue_full(struct scsi_device *, int); |
354 | |
355 | extern int scsi_set_medium_removal(struct scsi_device *, char); |
356 | |
357 | extern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, |
358 | unsigned char *buffer, int len, int timeout, |
359 | int retries, struct scsi_mode_data *data, |
360 | struct scsi_sense_hdr *); |
361 | extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp, |
362 | int modepage, unsigned char *buffer, int len, |
363 | int timeout, int retries, |
364 | struct scsi_mode_data *data, |
365 | struct scsi_sense_hdr *); |
366 | extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout, |
367 | int retries, struct scsi_sense_hdr *sshdr); |
368 | extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf, |
369 | int buf_len); |
370 | extern int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer, |
371 | unsigned int len, unsigned char opcode); |
372 | extern int scsi_device_set_state(struct scsi_device *sdev, |
373 | enum scsi_device_state state); |
374 | extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type, |
375 | gfp_t gfpflags); |
376 | extern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt); |
377 | extern void sdev_evt_send_simple(struct scsi_device *sdev, |
378 | enum scsi_device_event evt_type, gfp_t gfpflags); |
379 | extern int scsi_device_quiesce(struct scsi_device *sdev); |
380 | extern void scsi_device_resume(struct scsi_device *sdev); |
381 | extern void scsi_target_quiesce(struct scsi_target *); |
382 | extern void scsi_target_resume(struct scsi_target *); |
383 | extern void scsi_scan_target(struct device *parent, unsigned int channel, |
384 | unsigned int id, unsigned int lun, int rescan); |
385 | extern void scsi_target_reap(struct scsi_target *); |
386 | extern void scsi_target_block(struct device *); |
387 | extern void scsi_target_unblock(struct device *, enum scsi_device_state); |
388 | extern void scsi_remove_target(struct device *); |
389 | extern void int_to_scsilun(unsigned int, struct scsi_lun *); |
390 | extern int scsilun_to_int(struct scsi_lun *); |
391 | extern const char *scsi_device_state_name(enum scsi_device_state); |
392 | extern int scsi_is_sdev_device(const struct device *); |
393 | extern int scsi_is_target_device(const struct device *); |
394 | extern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, |
395 | int data_direction, void *buffer, unsigned bufflen, |
396 | unsigned char *sense, int timeout, int retries, |
397 | int flag, int *resid); |
398 | extern int scsi_execute_req_flags(struct scsi_device *sdev, |
399 | const unsigned char *cmd, int data_direction, void *buffer, |
400 | unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout, |
401 | int retries, int *resid, int flags); |
402 | static inline int scsi_execute_req(struct scsi_device *sdev, |
403 | const unsigned char *cmd, int data_direction, void *buffer, |
404 | unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout, |
405 | int retries, int *resid) |
406 | { |
407 | return scsi_execute_req_flags(sdev, cmd, data_direction, buffer, |
408 | bufflen, sshdr, timeout, retries, resid, 0); |
409 | } |
410 | extern void sdev_disable_disk_events(struct scsi_device *sdev); |
411 | extern void sdev_enable_disk_events(struct scsi_device *sdev); |
412 | |
413 | #ifdef CONFIG_PM_RUNTIME |
414 | extern int scsi_autopm_get_device(struct scsi_device *); |
415 | extern void scsi_autopm_put_device(struct scsi_device *); |
416 | #else |
417 | static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; } |
418 | static inline void scsi_autopm_put_device(struct scsi_device *d) {} |
419 | #endif /* CONFIG_PM_RUNTIME */ |
420 | |
421 | static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev) |
422 | { |
423 | return device_reprobe(&sdev->sdev_gendev); |
424 | } |
425 | |
426 | static inline unsigned int sdev_channel(struct scsi_device *sdev) |
427 | { |
428 | return sdev->channel; |
429 | } |
430 | |
431 | static inline unsigned int sdev_id(struct scsi_device *sdev) |
432 | { |
433 | return sdev->id; |
434 | } |
435 | |
436 | #define scmd_id(scmd) sdev_id((scmd)->device) |
437 | #define scmd_channel(scmd) sdev_channel((scmd)->device) |
438 | |
439 | /* |
440 | * checks for positions of the SCSI state machine |
441 | */ |
442 | static inline int scsi_device_online(struct scsi_device *sdev) |
443 | { |
444 | return (sdev->sdev_state != SDEV_OFFLINE && |
445 | sdev->sdev_state != SDEV_TRANSPORT_OFFLINE && |
446 | sdev->sdev_state != SDEV_DEL); |
447 | } |
448 | static inline int scsi_device_blocked(struct scsi_device *sdev) |
449 | { |
450 | return sdev->sdev_state == SDEV_BLOCK || |
451 | sdev->sdev_state == SDEV_CREATED_BLOCK; |
452 | } |
453 | static inline int scsi_device_created(struct scsi_device *sdev) |
454 | { |
455 | return sdev->sdev_state == SDEV_CREATED || |
456 | sdev->sdev_state == SDEV_CREATED_BLOCK; |
457 | } |
458 | |
459 | /* accessor functions for the SCSI parameters */ |
460 | static inline int scsi_device_sync(struct scsi_device *sdev) |
461 | { |
462 | return sdev->sdtr; |
463 | } |
464 | static inline int scsi_device_wide(struct scsi_device *sdev) |
465 | { |
466 | return sdev->wdtr; |
467 | } |
468 | static inline int scsi_device_dt(struct scsi_device *sdev) |
469 | { |
470 | return sdev->ppr; |
471 | } |
472 | static inline int scsi_device_dt_only(struct scsi_device *sdev) |
473 | { |
474 | if (sdev->inquiry_len < 57) |
475 | return 0; |
476 | return (sdev->inquiry[56] & 0x0c) == 0x04; |
477 | } |
478 | static inline int scsi_device_ius(struct scsi_device *sdev) |
479 | { |
480 | if (sdev->inquiry_len < 57) |
481 | return 0; |
482 | return sdev->inquiry[56] & 0x01; |
483 | } |
484 | static inline int scsi_device_qas(struct scsi_device *sdev) |
485 | { |
486 | if (sdev->inquiry_len < 57) |
487 | return 0; |
488 | return sdev->inquiry[56] & 0x02; |
489 | } |
490 | static inline int scsi_device_enclosure(struct scsi_device *sdev) |
491 | { |
492 | return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1; |
493 | } |
494 | |
495 | static inline int scsi_device_protection(struct scsi_device *sdev) |
496 | { |
497 | if (sdev->no_dif) |
498 | return 0; |
499 | |
500 | return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0); |
501 | } |
502 | |
503 | static inline int scsi_device_tpgs(struct scsi_device *sdev) |
504 | { |
505 | return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0; |
506 | } |
507 | |
508 | #define MODULE_ALIAS_SCSI_DEVICE(type) \ |
509 | MODULE_ALIAS("scsi:t-" __stringify(type) "*") |
510 | #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x" |
511 | |
512 | #endif /* _SCSI_SCSI_DEVICE_H */ |
513 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9