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8#ifndef _SCSI_SCSI_H
9#define _SCSI_SCSI_H
10
11#include <linux/types.h>
12
13struct scsi_cmnd;
14
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20
21
22#define SCSI_MAX_SG_SEGMENTS 128
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27
28#ifdef ARCH_HAS_SG_CHAIN
29#define SCSI_MAX_SG_CHAIN_SEGMENTS 2048
30#else
31#define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS
32#endif
33
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35
36
37
38#define SCAN_WILD_CARD ~0
39
40
41
42
43
44#define TEST_UNIT_READY 0x00
45#define REZERO_UNIT 0x01
46#define REQUEST_SENSE 0x03
47#define FORMAT_UNIT 0x04
48#define READ_BLOCK_LIMITS 0x05
49#define REASSIGN_BLOCKS 0x07
50#define INITIALIZE_ELEMENT_STATUS 0x07
51#define READ_6 0x08
52#define WRITE_6 0x0a
53#define SEEK_6 0x0b
54#define READ_REVERSE 0x0f
55#define WRITE_FILEMARKS 0x10
56#define SPACE 0x11
57#define INQUIRY 0x12
58#define RECOVER_BUFFERED_DATA 0x14
59#define MODE_SELECT 0x15
60#define RESERVE 0x16
61#define RELEASE 0x17
62#define COPY 0x18
63#define ERASE 0x19
64#define MODE_SENSE 0x1a
65#define START_STOP 0x1b
66#define RECEIVE_DIAGNOSTIC 0x1c
67#define SEND_DIAGNOSTIC 0x1d
68#define ALLOW_MEDIUM_REMOVAL 0x1e
69
70#define SET_WINDOW 0x24
71#define READ_CAPACITY 0x25
72#define READ_10 0x28
73#define WRITE_10 0x2a
74#define SEEK_10 0x2b
75#define POSITION_TO_ELEMENT 0x2b
76#define WRITE_VERIFY 0x2e
77#define VERIFY 0x2f
78#define SEARCH_HIGH 0x30
79#define SEARCH_EQUAL 0x31
80#define SEARCH_LOW 0x32
81#define SET_LIMITS 0x33
82#define PRE_FETCH 0x34
83#define READ_POSITION 0x34
84#define SYNCHRONIZE_CACHE 0x35
85#define LOCK_UNLOCK_CACHE 0x36
86#define READ_DEFECT_DATA 0x37
87#define MEDIUM_SCAN 0x38
88#define COMPARE 0x39
89#define COPY_VERIFY 0x3a
90#define WRITE_BUFFER 0x3b
91#define READ_BUFFER 0x3c
92#define UPDATE_BLOCK 0x3d
93#define READ_LONG 0x3e
94#define WRITE_LONG 0x3f
95#define CHANGE_DEFINITION 0x40
96#define WRITE_SAME 0x41
97#define READ_TOC 0x43
98#define LOG_SELECT 0x4c
99#define LOG_SENSE 0x4d
100#define XDWRITEREAD_10 0x53
101#define MODE_SELECT_10 0x55
102#define RESERVE_10 0x56
103#define RELEASE_10 0x57
104#define MODE_SENSE_10 0x5a
105#define PERSISTENT_RESERVE_IN 0x5e
106#define PERSISTENT_RESERVE_OUT 0x5f
107#define VARIABLE_LENGTH_CMD 0x7f
108#define REPORT_LUNS 0xa0
109#define MAINTENANCE_IN 0xa3
110#define MAINTENANCE_OUT 0xa4
111#define MOVE_MEDIUM 0xa5
112#define EXCHANGE_MEDIUM 0xa6
113#define READ_12 0xa8
114#define WRITE_12 0xaa
115#define WRITE_VERIFY_12 0xae
116#define SEARCH_HIGH_12 0xb0
117#define SEARCH_EQUAL_12 0xb1
118#define SEARCH_LOW_12 0xb2
119#define READ_ELEMENT_STATUS 0xb8
120#define SEND_VOLUME_TAG 0xb6
121#define WRITE_LONG_2 0xea
122#define READ_16 0x88
123#define WRITE_16 0x8a
124#define VERIFY_16 0x8f
125#define SERVICE_ACTION_IN 0x9e
126
127#define SAI_READ_CAPACITY_16 0x10
128
129#define MI_REPORT_TARGET_PGS 0x0a
130
131#define MO_SET_TARGET_PGS 0x0a
132
133#define READ_32 0x09
134#define WRITE_32 0x0b
135
136
137#define ATA_16 0x85
138#define ATA_12 0xa1
139
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142
143
144#define SCSI_MAX_VARLEN_CDB_SIZE 260
145
146
147struct scsi_varlen_cdb_hdr {
148 u8 opcode;
149 u8 control;
150 u8 misc[5];
151 u8 additional_cdb_length;
152 __be16 service_action;
153
154};
155
156static inline unsigned
157scsi_varlen_cdb_length(const void *hdr)
158{
159 return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8;
160}
161
162extern const unsigned char scsi_command_size_tbl[8];
163#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7]
164
165static inline unsigned
166scsi_command_size(const unsigned char *cmnd)
167{
168 return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
169 scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]);
170}
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175
176#define SAM_STAT_GOOD 0x00
177#define SAM_STAT_CHECK_CONDITION 0x02
178#define SAM_STAT_CONDITION_MET 0x04
179#define SAM_STAT_BUSY 0x08
180#define SAM_STAT_INTERMEDIATE 0x10
181#define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14
182#define SAM_STAT_RESERVATION_CONFLICT 0x18
183#define SAM_STAT_COMMAND_TERMINATED 0x22
184#define SAM_STAT_TASK_SET_FULL 0x28
185#define SAM_STAT_ACA_ACTIVE 0x30
186#define SAM_STAT_TASK_ABORTED 0x40
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195
196static inline int scsi_status_is_good(int status)
197{
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202
203 status &= 0xfe;
204 return ((status == SAM_STAT_GOOD) ||
205 (status == SAM_STAT_INTERMEDIATE) ||
206 (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) ||
207
208 (status == SAM_STAT_COMMAND_TERMINATED));
209}
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217
218#define GOOD 0x00
219#define CHECK_CONDITION 0x01
220#define CONDITION_GOOD 0x02
221#define BUSY 0x04
222#define INTERMEDIATE_GOOD 0x08
223#define INTERMEDIATE_C_GOOD 0x0a
224#define RESERVATION_CONFLICT 0x0c
225#define COMMAND_TERMINATED 0x11
226#define QUEUE_FULL 0x14
227#define ACA_ACTIVE 0x18
228#define TASK_ABORTED 0x20
229
230#define STATUS_MASK 0xfe
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234
235
236#define NO_SENSE 0x00
237#define RECOVERED_ERROR 0x01
238#define NOT_READY 0x02
239#define MEDIUM_ERROR 0x03
240#define HARDWARE_ERROR 0x04
241#define ILLEGAL_REQUEST 0x05
242#define UNIT_ATTENTION 0x06
243#define DATA_PROTECT 0x07
244#define BLANK_CHECK 0x08
245#define COPY_ABORTED 0x0a
246#define ABORTED_COMMAND 0x0b
247#define VOLUME_OVERFLOW 0x0d
248#define MISCOMPARE 0x0e
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255
256#define TYPE_DISK 0x00
257#define TYPE_TAPE 0x01
258#define TYPE_PRINTER 0x02
259#define TYPE_PROCESSOR 0x03
260#define TYPE_WORM 0x04
261#define TYPE_ROM 0x05
262#define TYPE_SCANNER 0x06
263#define TYPE_MOD 0x07
264
265#define TYPE_MEDIUM_CHANGER 0x08
266#define TYPE_COMM 0x09
267#define TYPE_RAID 0x0c
268#define TYPE_ENCLOSURE 0x0d
269#define TYPE_RBC 0x0e
270#define TYPE_OSD 0x11
271#define TYPE_NO_LUN 0x7f
272
273
274enum scsi_protocol {
275 SCSI_PROTOCOL_FCP = 0,
276 SCSI_PROTOCOL_SPI = 1,
277 SCSI_PROTOCOL_SSA = 2,
278 SCSI_PROTOCOL_SBP = 3,
279 SCSI_PROTOCOL_SRP = 4,
280 SCSI_PROTOCOL_ISCSI = 5,
281 SCSI_PROTOCOL_SAS = 6,
282 SCSI_PROTOCOL_ADT = 7,
283 SCSI_PROTOCOL_ATA = 8,
284 SCSI_PROTOCOL_UNSPEC = 0xf,
285};
286
287
288extern const char * scsi_device_type(unsigned type);
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293
294struct ccs_modesel_head {
295 __u8 _r1;
296 __u8 medium;
297 __u8 _r2;
298 __u8 block_desc_length;
299 __u8 density;
300 __u8 number_blocks_hi;
301 __u8 number_blocks_med;
302 __u8 number_blocks_lo;
303 __u8 _r3;
304 __u8 block_length_hi;
305 __u8 block_length_med;
306 __u8 block_length_lo;
307};
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311
312struct scsi_lun {
313 __u8 scsi_lun[8];
314};
315
316
317
318
319#define SCSI_W_LUN_BASE 0xc100
320#define SCSI_W_LUN_REPORT_LUNS (SCSI_W_LUN_BASE + 1)
321#define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2)
322#define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3)
323
324static inline int scsi_is_wlun(unsigned int lun)
325{
326 return (lun & 0xff00) == SCSI_W_LUN_BASE;
327}
328
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333
334#define COMMAND_COMPLETE 0x00
335#define EXTENDED_MESSAGE 0x01
336#define EXTENDED_MODIFY_DATA_POINTER 0x00
337#define EXTENDED_SDTR 0x01
338#define EXTENDED_EXTENDED_IDENTIFY 0x02
339#define EXTENDED_WDTR 0x03
340#define EXTENDED_PPR 0x04
341#define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05
342#define SAVE_POINTERS 0x02
343#define RESTORE_POINTERS 0x03
344#define DISCONNECT 0x04
345#define INITIATOR_ERROR 0x05
346#define ABORT_TASK_SET 0x06
347#define MESSAGE_REJECT 0x07
348#define NOP 0x08
349#define MSG_PARITY_ERROR 0x09
350#define LINKED_CMD_COMPLETE 0x0a
351#define LINKED_FLG_CMD_COMPLETE 0x0b
352#define TARGET_RESET 0x0c
353#define ABORT_TASK 0x0d
354#define CLEAR_TASK_SET 0x0e
355#define INITIATE_RECOVERY 0x0f
356#define RELEASE_RECOVERY 0x10
357#define CLEAR_ACA 0x16
358#define LOGICAL_UNIT_RESET 0x17
359#define SIMPLE_QUEUE_TAG 0x20
360#define HEAD_OF_QUEUE_TAG 0x21
361#define ORDERED_QUEUE_TAG 0x22
362#define IGNORE_WIDE_RESIDUE 0x23
363#define ACA 0x24
364#define QAS_REQUEST 0x55
365
366
367#define BUS_DEVICE_RESET TARGET_RESET
368#define ABORT ABORT_TASK_SET
369
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373
374#define DID_OK 0x00
375#define DID_NO_CONNECT 0x01
376#define DID_BUS_BUSY 0x02
377#define DID_TIME_OUT 0x03
378#define DID_BAD_TARGET 0x04
379#define DID_ABORT 0x05
380#define DID_PARITY 0x06
381#define DID_ERROR 0x07
382#define DID_RESET 0x08
383#define DID_BAD_INTR 0x09
384#define DID_PASSTHROUGH 0x0a
385#define DID_SOFT_ERROR 0x0b
386#define DID_IMM_RETRY 0x0c
387#define DID_REQUEUE 0x0d
388
389#define DID_TRANSPORT_DISRUPTED 0x0e
390
391
392
393#define DID_TRANSPORT_FAILFAST 0x0f
394#define DRIVER_OK 0x00
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397
398
399
400#define DRIVER_BUSY 0x01
401#define DRIVER_SOFT 0x02
402#define DRIVER_MEDIA 0x03
403#define DRIVER_ERROR 0x04
404
405#define DRIVER_INVALID 0x05
406#define DRIVER_TIMEOUT 0x06
407#define DRIVER_HARD 0x07
408#define DRIVER_SENSE 0x08
409
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411
412
413
414#define NEEDS_RETRY 0x2001
415#define SUCCESS 0x2002
416#define FAILED 0x2003
417#define QUEUED 0x2004
418#define SOFT_ERROR 0x2005
419#define ADD_TO_MLQUEUE 0x2006
420#define TIMEOUT_ERROR 0x2007
421#define SCSI_RETURN_NOT_HANDLED 0x2008
422
423
424
425
426#define SCSI_MLQUEUE_HOST_BUSY 0x1055
427#define SCSI_MLQUEUE_DEVICE_BUSY 0x1056
428#define SCSI_MLQUEUE_EH_RETRY 0x1057
429#define SCSI_MLQUEUE_TARGET_BUSY 0x1058
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440
441#define status_byte(result) (((result) >> 1) & 0x7f)
442#define msg_byte(result) (((result) >> 8) & 0xff)
443#define host_byte(result) (((result) >> 16) & 0xff)
444#define driver_byte(result) (((result) >> 24) & 0xff)
445
446#define sense_class(sense) (((sense) >> 4) & 0x7)
447#define sense_error(sense) ((sense) & 0xf)
448#define sense_valid(sense) ((sense) & 0x80);
449
450
451
452
453#define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ)
454#define START_STOP_TIMEOUT (60 * HZ)
455#define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ)
456#define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ)
457#define READ_DEFECT_DATA_TIMEOUT (60 * HZ )
458
459
460#define IDENTIFY_BASE 0x80
461#define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\
462 ((can_disconnect) ? 0x40 : 0) |\
463 ((lun) & 0x07))
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470
471
472#define SCSI_UNKNOWN 0
473#define SCSI_1 1
474#define SCSI_1_CCS 2
475#define SCSI_2 3
476#define SCSI_3 4
477#define SCSI_SPC_2 5
478#define SCSI_SPC_3 6
479
480
481
482
483#define SCSI_INQ_PQ_CON 0x00
484#define SCSI_INQ_PQ_NOT_CON 0x01
485#define SCSI_INQ_PQ_NOT_CAP 0x03
486
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491
492
493
494
495#define SCSI_IOCTL_GET_IDLUN 0x5382
496
497
498
499
500#define SCSI_IOCTL_PROBE_HOST 0x5385
501
502
503#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
504
505
506#define SCSI_IOCTL_GET_PCI 0x5387
507
508
509static inline __u32 scsi_to_u32(__u8 *ptr)
510{
511 return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
512}
513
514#endif
515