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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This header file contains public constants and structures used by | |
3 | * the scsi code for linux. | |
4 | * | |
5 | * For documentation on the OPCODES, MESSAGES, and SENSE values, | |
6 | * please consult the SCSI standard. | |
7 | */ | |
8 | #ifndef _SCSI_SCSI_H | |
9 | #define _SCSI_SCSI_H | |
10 | ||
11 | #include <linux/types.h> | |
ac61c46f | 12 | #include <linux/scatterlist.h> |
0816c925 | 13 | #include <linux/kernel.h> |
f290f197 JB |
14 | |
15 | struct scsi_cmnd; | |
1da177e4 | 16 | |
0816c925 MP |
17 | enum scsi_timeouts { |
18 | SCSI_DEFAULT_EH_TIMEOUT = 10 * HZ, | |
19 | }; | |
20 | ||
d3f46f39 JB |
21 | /* |
22 | * The maximum number of SG segments that we will put inside a | |
23 | * scatterlist (unless chaining is used). Should ideally fit inside a | |
24 | * single page, to avoid a higher order allocation. We could define this | |
25 | * to SG_MAX_SINGLE_ALLOC to pack correctly at the highest order. The | |
26 | * minimum value is 32 | |
27 | */ | |
28 | #define SCSI_MAX_SG_SEGMENTS 128 | |
29 | ||
30 | /* | |
31 | * Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit | |
32 | * is totally arbitrary, a setting of 2048 will get you at least 8mb ios. | |
33 | */ | |
34 | #ifdef ARCH_HAS_SG_CHAIN | |
35 | #define SCSI_MAX_SG_CHAIN_SEGMENTS 2048 | |
36 | #else | |
37 | #define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS | |
38 | #endif | |
39 | ||
13f05c8d MP |
40 | /* |
41 | * DIX-capable adapters effectively support infinite chaining for the | |
42 | * protection information scatterlist | |
43 | */ | |
44 | #define SCSI_MAX_PROT_SG_SEGMENTS 0xFFFF | |
45 | ||
e02f3f59 CH |
46 | /* |
47 | * Special value for scanning to specify scanning or rescanning of all | |
48 | * possible channels, (target) ids, or luns on a given shost. | |
49 | */ | |
50 | #define SCAN_WILD_CARD ~0 | |
51 | ||
1da177e4 LT |
52 | /* |
53 | * SCSI opcodes | |
54 | */ | |
55 | ||
56 | #define TEST_UNIT_READY 0x00 | |
57 | #define REZERO_UNIT 0x01 | |
58 | #define REQUEST_SENSE 0x03 | |
59 | #define FORMAT_UNIT 0x04 | |
60 | #define READ_BLOCK_LIMITS 0x05 | |
61 | #define REASSIGN_BLOCKS 0x07 | |
daa6eda6 | 62 | #define INITIALIZE_ELEMENT_STATUS 0x07 |
1da177e4 LT |
63 | #define READ_6 0x08 |
64 | #define WRITE_6 0x0a | |
65 | #define SEEK_6 0x0b | |
66 | #define READ_REVERSE 0x0f | |
67 | #define WRITE_FILEMARKS 0x10 | |
68 | #define SPACE 0x11 | |
69 | #define INQUIRY 0x12 | |
70 | #define RECOVER_BUFFERED_DATA 0x14 | |
71 | #define MODE_SELECT 0x15 | |
72 | #define RESERVE 0x16 | |
73 | #define RELEASE 0x17 | |
74 | #define COPY 0x18 | |
75 | #define ERASE 0x19 | |
76 | #define MODE_SENSE 0x1a | |
77 | #define START_STOP 0x1b | |
78 | #define RECEIVE_DIAGNOSTIC 0x1c | |
79 | #define SEND_DIAGNOSTIC 0x1d | |
80 | #define ALLOW_MEDIUM_REMOVAL 0x1e | |
81 | ||
0a6a717c | 82 | #define READ_FORMAT_CAPACITIES 0x23 |
1da177e4 LT |
83 | #define SET_WINDOW 0x24 |
84 | #define READ_CAPACITY 0x25 | |
85 | #define READ_10 0x28 | |
86 | #define WRITE_10 0x2a | |
87 | #define SEEK_10 0x2b | |
daa6eda6 | 88 | #define POSITION_TO_ELEMENT 0x2b |
1da177e4 LT |
89 | #define WRITE_VERIFY 0x2e |
90 | #define VERIFY 0x2f | |
91 | #define SEARCH_HIGH 0x30 | |
92 | #define SEARCH_EQUAL 0x31 | |
93 | #define SEARCH_LOW 0x32 | |
94 | #define SET_LIMITS 0x33 | |
95 | #define PRE_FETCH 0x34 | |
96 | #define READ_POSITION 0x34 | |
97 | #define SYNCHRONIZE_CACHE 0x35 | |
98 | #define LOCK_UNLOCK_CACHE 0x36 | |
99 | #define READ_DEFECT_DATA 0x37 | |
100 | #define MEDIUM_SCAN 0x38 | |
101 | #define COMPARE 0x39 | |
102 | #define COPY_VERIFY 0x3a | |
103 | #define WRITE_BUFFER 0x3b | |
104 | #define READ_BUFFER 0x3c | |
105 | #define UPDATE_BLOCK 0x3d | |
106 | #define READ_LONG 0x3e | |
107 | #define WRITE_LONG 0x3f | |
108 | #define CHANGE_DEFINITION 0x40 | |
109 | #define WRITE_SAME 0x41 | |
f57e4502 | 110 | #define UNMAP 0x42 |
1da177e4 | 111 | #define READ_TOC 0x43 |
0a6a717c | 112 | #define READ_HEADER 0x44 |
93aae17a | 113 | #define GET_EVENT_STATUS_NOTIFICATION 0x4a |
1da177e4 LT |
114 | #define LOG_SELECT 0x4c |
115 | #define LOG_SENSE 0x4d | |
c639d14e | 116 | #define XDWRITEREAD_10 0x53 |
1da177e4 LT |
117 | #define MODE_SELECT_10 0x55 |
118 | #define RESERVE_10 0x56 | |
119 | #define RELEASE_10 0x57 | |
120 | #define MODE_SENSE_10 0x5a | |
121 | #define PERSISTENT_RESERVE_IN 0x5e | |
122 | #define PERSISTENT_RESERVE_OUT 0x5f | |
db4742dd | 123 | #define VARIABLE_LENGTH_CMD 0x7f |
1da177e4 | 124 | #define REPORT_LUNS 0xa0 |
e9ccc998 | 125 | #define SECURITY_PROTOCOL_IN 0xa2 |
5a09e398 | 126 | #define MAINTENANCE_IN 0xa3 |
057ea7c9 | 127 | #define MAINTENANCE_OUT 0xa4 |
1da177e4 | 128 | #define MOVE_MEDIUM 0xa5 |
daa6eda6 | 129 | #define EXCHANGE_MEDIUM 0xa6 |
1da177e4 LT |
130 | #define READ_12 0xa8 |
131 | #define WRITE_12 0xaa | |
e9ccc998 | 132 | #define READ_MEDIA_SERIAL_NUMBER 0xab |
1da177e4 | 133 | #define WRITE_VERIFY_12 0xae |
59c31b69 | 134 | #define VERIFY_12 0xaf |
1da177e4 LT |
135 | #define SEARCH_HIGH_12 0xb0 |
136 | #define SEARCH_EQUAL_12 0xb1 | |
137 | #define SEARCH_LOW_12 0xb2 | |
e9ccc998 | 138 | #define SECURITY_PROTOCOL_OUT 0xb5 |
1da177e4 LT |
139 | #define READ_ELEMENT_STATUS 0xb8 |
140 | #define SEND_VOLUME_TAG 0xb6 | |
141 | #define WRITE_LONG_2 0xea | |
e9ccc998 NB |
142 | #define EXTENDED_COPY 0x83 |
143 | #define RECEIVE_COPY_RESULTS 0x84 | |
144 | #define ACCESS_CONTROL_IN 0x86 | |
145 | #define ACCESS_CONTROL_OUT 0x87 | |
1da177e4 | 146 | #define READ_16 0x88 |
1c68cc16 | 147 | #define COMPARE_AND_WRITE 0x89 |
1da177e4 | 148 | #define WRITE_16 0x8a |
e9ccc998 NB |
149 | #define READ_ATTRIBUTE 0x8c |
150 | #define WRITE_ATTRIBUTE 0x8d | |
1da177e4 | 151 | #define VERIFY_16 0x8f |
cd0c72c1 | 152 | #define SYNCHRONIZE_CACHE_16 0x91 |
f57e4502 | 153 | #define WRITE_SAME_16 0x93 |
1da177e4 LT |
154 | #define SERVICE_ACTION_IN 0x9e |
155 | /* values for service action in */ | |
156 | #define SAI_READ_CAPACITY_16 0x10 | |
f57e4502 | 157 | #define SAI_GET_LBA_STATUS 0x12 |
e9ccc998 NB |
158 | /* values for VARIABLE_LENGTH_CMD service action codes |
159 | * see spc4r17 Section D.3.5, table D.7 and D.8 */ | |
160 | #define VLC_SA_RECEIVE_CREDENTIAL 0x1800 | |
5a09e398 | 161 | /* values for maintenance in */ |
e9ccc998 | 162 | #define MI_REPORT_IDENTIFYING_INFORMATION 0x05 |
5a09e398 | 163 | #define MI_REPORT_TARGET_PGS 0x0a |
e9ccc998 NB |
164 | #define MI_REPORT_ALIASES 0x0b |
165 | #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c | |
166 | #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d | |
167 | #define MI_REPORT_PRIORITY 0x0e | |
168 | #define MI_REPORT_TIMESTAMP 0x0f | |
169 | #define MI_MANAGEMENT_PROTOCOL_IN 0x10 | |
3588c5a2 RE |
170 | /* value for MI_REPORT_TARGET_PGS ext header */ |
171 | #define MI_EXT_HDR_PARAM_FMT 0x20 | |
057ea7c9 | 172 | /* values for maintenance out */ |
e9ccc998 | 173 | #define MO_SET_IDENTIFYING_INFORMATION 0x06 |
057ea7c9 | 174 | #define MO_SET_TARGET_PGS 0x0a |
e9ccc998 NB |
175 | #define MO_CHANGE_ALIASES 0x0b |
176 | #define MO_SET_PRIORITY 0x0e | |
177 | #define MO_SET_TIMESTAMP 0x0f | |
178 | #define MO_MANAGEMENT_PROTOCOL_OUT 0x10 | |
4e7392ec | 179 | /* values for variable length command */ |
e9ccc998 NB |
180 | #define XDREAD_32 0x03 |
181 | #define XDWRITE_32 0x04 | |
182 | #define XPWRITE_32 0x06 | |
183 | #define XDWRITEREAD_32 0x07 | |
4e7392ec | 184 | #define READ_32 0x09 |
59c31b69 | 185 | #define VERIFY_32 0x0a |
4e7392ec | 186 | #define WRITE_32 0x0b |
f57e4502 | 187 | #define WRITE_SAME_32 0x0d |
1da177e4 | 188 | |
b095518e JG |
189 | /* Values for T10/04-262r7 */ |
190 | #define ATA_16 0x85 /* 16-byte pass-thru */ | |
191 | #define ATA_12 0xa1 /* 12-byte pass-thru */ | |
1da177e4 | 192 | |
db4742dd BH |
193 | /* |
194 | * SCSI command lengths | |
195 | */ | |
196 | ||
197 | #define SCSI_MAX_VARLEN_CDB_SIZE 260 | |
198 | ||
199 | /* defined in T10 SCSI Primary Commands-2 (SPC2) */ | |
200 | struct scsi_varlen_cdb_hdr { | |
083c8c1e PK |
201 | __u8 opcode; /* opcode always == VARIABLE_LENGTH_CMD */ |
202 | __u8 control; | |
203 | __u8 misc[5]; | |
204 | __u8 additional_cdb_length; /* total cdb length - 8 */ | |
db4742dd BH |
205 | __be16 service_action; |
206 | /* service specific data follows */ | |
207 | }; | |
208 | ||
209 | static inline unsigned | |
210 | scsi_varlen_cdb_length(const void *hdr) | |
211 | { | |
212 | return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8; | |
213 | } | |
214 | ||
215 | extern const unsigned char scsi_command_size_tbl[8]; | |
216 | #define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7] | |
217 | ||
218 | static inline unsigned | |
219 | scsi_command_size(const unsigned char *cmnd) | |
220 | { | |
221 | return (cmnd[0] == VARIABLE_LENGTH_CMD) ? | |
222 | scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]); | |
223 | } | |
224 | ||
de50ada5 HM |
225 | #ifdef CONFIG_ACPI |
226 | struct acpi_bus_type; | |
227 | ||
228 | extern int | |
229 | scsi_register_acpi_bus_type(struct acpi_bus_type *bus); | |
230 | ||
231 | extern void | |
232 | scsi_unregister_acpi_bus_type(struct acpi_bus_type *bus); | |
233 | #endif | |
234 | ||
1da177e4 LT |
235 | /* |
236 | * SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft | |
237 | * T10/1561-D Revision 4 Draft dated 7th November 2002. | |
238 | */ | |
239 | #define SAM_STAT_GOOD 0x00 | |
240 | #define SAM_STAT_CHECK_CONDITION 0x02 | |
241 | #define SAM_STAT_CONDITION_MET 0x04 | |
242 | #define SAM_STAT_BUSY 0x08 | |
243 | #define SAM_STAT_INTERMEDIATE 0x10 | |
244 | #define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14 | |
245 | #define SAM_STAT_RESERVATION_CONFLICT 0x18 | |
246 | #define SAM_STAT_COMMAND_TERMINATED 0x22 /* obsolete in SAM-3 */ | |
247 | #define SAM_STAT_TASK_SET_FULL 0x28 | |
248 | #define SAM_STAT_ACA_ACTIVE 0x30 | |
249 | #define SAM_STAT_TASK_ABORTED 0x40 | |
250 | ||
251 | /** scsi_status_is_good - check the status return. | |
252 | * | |
253 | * @status: the status passed up from the driver (including host and | |
254 | * driver components) | |
255 | * | |
256 | * This returns true for known good conditions that may be treated as | |
257 | * command completed normally | |
258 | */ | |
259 | static inline int scsi_status_is_good(int status) | |
260 | { | |
261 | /* | |
262 | * FIXME: bit0 is listed as reserved in SCSI-2, but is | |
263 | * significant in SCSI-3. For now, we follow the SCSI-2 | |
264 | * behaviour and ignore reserved bits. | |
265 | */ | |
266 | status &= 0xfe; | |
267 | return ((status == SAM_STAT_GOOD) || | |
268 | (status == SAM_STAT_INTERMEDIATE) || | |
269 | (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || | |
270 | /* FIXME: this is obsolete in SAM-3 */ | |
271 | (status == SAM_STAT_COMMAND_TERMINATED)); | |
272 | } | |
273 | ||
274 | /* | |
275 | * Status codes. These are deprecated as they are shifted 1 bit right | |
276 | * from those found in the SCSI standards. This causes confusion for | |
277 | * applications that are ported to several OSes. Prefer SAM Status codes | |
278 | * above. | |
279 | */ | |
280 | ||
281 | #define GOOD 0x00 | |
282 | #define CHECK_CONDITION 0x01 | |
283 | #define CONDITION_GOOD 0x02 | |
284 | #define BUSY 0x04 | |
285 | #define INTERMEDIATE_GOOD 0x08 | |
286 | #define INTERMEDIATE_C_GOOD 0x0a | |
287 | #define RESERVATION_CONFLICT 0x0c | |
288 | #define COMMAND_TERMINATED 0x11 | |
289 | #define QUEUE_FULL 0x14 | |
290 | #define ACA_ACTIVE 0x18 | |
291 | #define TASK_ABORTED 0x20 | |
292 | ||
293 | #define STATUS_MASK 0xfe | |
294 | ||
295 | /* | |
296 | * SENSE KEYS | |
297 | */ | |
298 | ||
299 | #define NO_SENSE 0x00 | |
300 | #define RECOVERED_ERROR 0x01 | |
301 | #define NOT_READY 0x02 | |
302 | #define MEDIUM_ERROR 0x03 | |
303 | #define HARDWARE_ERROR 0x04 | |
304 | #define ILLEGAL_REQUEST 0x05 | |
305 | #define UNIT_ATTENTION 0x06 | |
306 | #define DATA_PROTECT 0x07 | |
307 | #define BLANK_CHECK 0x08 | |
308 | #define COPY_ABORTED 0x0a | |
309 | #define ABORTED_COMMAND 0x0b | |
310 | #define VOLUME_OVERFLOW 0x0d | |
311 | #define MISCOMPARE 0x0e | |
312 | ||
313 | ||
314 | /* | |
315 | * DEVICE TYPES | |
d7b8bcb0 | 316 | * Please keep them in 0x%02x format for $MODALIAS to work |
1da177e4 LT |
317 | */ |
318 | ||
319 | #define TYPE_DISK 0x00 | |
320 | #define TYPE_TAPE 0x01 | |
321 | #define TYPE_PRINTER 0x02 | |
322 | #define TYPE_PROCESSOR 0x03 /* HP scanners use this */ | |
323 | #define TYPE_WORM 0x04 /* Treated as ROM by our system */ | |
324 | #define TYPE_ROM 0x05 | |
325 | #define TYPE_SCANNER 0x06 | |
326 | #define TYPE_MOD 0x07 /* Magneto-optical disk - | |
327 | * - treated as TYPE_DISK */ | |
328 | #define TYPE_MEDIUM_CHANGER 0x08 | |
329 | #define TYPE_COMM 0x09 /* Communications device */ | |
1da177e4 | 330 | #define TYPE_RAID 0x0c |
7f602c53 | 331 | #define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */ |
631e8a13 | 332 | #define TYPE_RBC 0x0e |
82443a58 | 333 | #define TYPE_OSD 0x11 |
1da177e4 LT |
334 | #define TYPE_NO_LUN 0x7f |
335 | ||
89dddbce JB |
336 | /* SCSI protocols; these are taken from SPC-3 section 7.5 */ |
337 | enum scsi_protocol { | |
338 | SCSI_PROTOCOL_FCP = 0, /* Fibre Channel */ | |
339 | SCSI_PROTOCOL_SPI = 1, /* parallel SCSI */ | |
340 | SCSI_PROTOCOL_SSA = 2, /* Serial Storage Architecture - Obsolete */ | |
341 | SCSI_PROTOCOL_SBP = 3, /* firewire */ | |
342 | SCSI_PROTOCOL_SRP = 4, /* Infiniband RDMA */ | |
343 | SCSI_PROTOCOL_ISCSI = 5, | |
344 | SCSI_PROTOCOL_SAS = 6, | |
345 | SCSI_PROTOCOL_ADT = 7, /* Media Changers */ | |
346 | SCSI_PROTOCOL_ATA = 8, | |
347 | SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */ | |
348 | }; | |
349 | ||
4ff36718 MW |
350 | /* Returns a human-readable name for the device */ |
351 | extern const char * scsi_device_type(unsigned type); | |
352 | ||
1da177e4 LT |
353 | /* |
354 | * standard mode-select header prepended to all mode-select commands | |
355 | */ | |
356 | ||
357 | struct ccs_modesel_head { | |
358 | __u8 _r1; /* reserved */ | |
359 | __u8 medium; /* device-specific medium type */ | |
360 | __u8 _r2; /* reserved */ | |
361 | __u8 block_desc_length; /* block descriptor length */ | |
362 | __u8 density; /* device-specific density code */ | |
363 | __u8 number_blocks_hi; /* number of blocks in this block desc */ | |
364 | __u8 number_blocks_med; | |
365 | __u8 number_blocks_lo; | |
366 | __u8 _r3; | |
367 | __u8 block_length_hi; /* block length for blocks in this desc */ | |
368 | __u8 block_length_med; | |
369 | __u8 block_length_lo; | |
370 | }; | |
371 | ||
372 | /* | |
373 | * ScsiLun: 8 byte LUN. | |
374 | */ | |
375 | struct scsi_lun { | |
376 | __u8 scsi_lun[8]; | |
377 | }; | |
378 | ||
01b291bd JB |
379 | /* |
380 | * The Well Known LUNS (SAM-3) in our int representation of a LUN | |
381 | */ | |
382 | #define SCSI_W_LUN_BASE 0xc100 | |
383 | #define SCSI_W_LUN_REPORT_LUNS (SCSI_W_LUN_BASE + 1) | |
384 | #define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2) | |
385 | #define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3) | |
386 | ||
387 | static inline int scsi_is_wlun(unsigned int lun) | |
388 | { | |
389 | return (lun & 0xff00) == SCSI_W_LUN_BASE; | |
390 | } | |
391 | ||
392 | ||
1da177e4 LT |
393 | /* |
394 | * MESSAGE CODES | |
395 | */ | |
396 | ||
397 | #define COMMAND_COMPLETE 0x00 | |
398 | #define EXTENDED_MESSAGE 0x01 | |
399 | #define EXTENDED_MODIFY_DATA_POINTER 0x00 | |
400 | #define EXTENDED_SDTR 0x01 | |
401 | #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ | |
402 | #define EXTENDED_WDTR 0x03 | |
403 | #define EXTENDED_PPR 0x04 | |
404 | #define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05 | |
405 | #define SAVE_POINTERS 0x02 | |
406 | #define RESTORE_POINTERS 0x03 | |
407 | #define DISCONNECT 0x04 | |
408 | #define INITIATOR_ERROR 0x05 | |
409 | #define ABORT_TASK_SET 0x06 | |
410 | #define MESSAGE_REJECT 0x07 | |
411 | #define NOP 0x08 | |
412 | #define MSG_PARITY_ERROR 0x09 | |
413 | #define LINKED_CMD_COMPLETE 0x0a | |
414 | #define LINKED_FLG_CMD_COMPLETE 0x0b | |
415 | #define TARGET_RESET 0x0c | |
416 | #define ABORT_TASK 0x0d | |
417 | #define CLEAR_TASK_SET 0x0e | |
418 | #define INITIATE_RECOVERY 0x0f /* SCSI-II only */ | |
419 | #define RELEASE_RECOVERY 0x10 /* SCSI-II only */ | |
420 | #define CLEAR_ACA 0x16 | |
421 | #define LOGICAL_UNIT_RESET 0x17 | |
422 | #define SIMPLE_QUEUE_TAG 0x20 | |
423 | #define HEAD_OF_QUEUE_TAG 0x21 | |
424 | #define ORDERED_QUEUE_TAG 0x22 | |
425 | #define IGNORE_WIDE_RESIDUE 0x23 | |
426 | #define ACA 0x24 | |
427 | #define QAS_REQUEST 0x55 | |
428 | ||
429 | /* Old SCSI2 names, don't use in new code */ | |
430 | #define BUS_DEVICE_RESET TARGET_RESET | |
431 | #define ABORT ABORT_TASK_SET | |
432 | ||
433 | /* | |
434 | * Host byte codes | |
435 | */ | |
436 | ||
437 | #define DID_OK 0x00 /* NO error */ | |
438 | #define DID_NO_CONNECT 0x01 /* Couldn't connect before timeout period */ | |
439 | #define DID_BUS_BUSY 0x02 /* BUS stayed busy through time out period */ | |
440 | #define DID_TIME_OUT 0x03 /* TIMED OUT for other reason */ | |
441 | #define DID_BAD_TARGET 0x04 /* BAD target. */ | |
442 | #define DID_ABORT 0x05 /* Told to abort for some other reason */ | |
443 | #define DID_PARITY 0x06 /* Parity error */ | |
444 | #define DID_ERROR 0x07 /* Internal error */ | |
445 | #define DID_RESET 0x08 /* Reset by somebody. */ | |
446 | #define DID_BAD_INTR 0x09 /* Got an interrupt we weren't expecting. */ | |
447 | #define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */ | |
448 | #define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */ | |
449 | #define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */ | |
bf341919 JB |
450 | #define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also |
451 | * without decrementing the retry count */ | |
a4dfaa6f MC |
452 | #define DID_TRANSPORT_DISRUPTED 0x0e /* Transport error disrupted execution |
453 | * and the driver blocked the port to | |
454 | * recover the link. Transport class will | |
455 | * retry or fail IO */ | |
456 | #define DID_TRANSPORT_FAILFAST 0x0f /* Transport class fastfailed the io */ | |
63583cca HR |
457 | #define DID_TARGET_FAILURE 0x10 /* Permanent target failure, do not retry on |
458 | * other paths */ | |
459 | #define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other | |
460 | * paths might yield different results */ | |
1da177e4 LT |
461 | #define DRIVER_OK 0x00 /* Driver status */ |
462 | ||
463 | /* | |
464 | * These indicate the error that occurred, and what is available. | |
465 | */ | |
466 | ||
467 | #define DRIVER_BUSY 0x01 | |
468 | #define DRIVER_SOFT 0x02 | |
469 | #define DRIVER_MEDIA 0x03 | |
470 | #define DRIVER_ERROR 0x04 | |
471 | ||
472 | #define DRIVER_INVALID 0x05 | |
473 | #define DRIVER_TIMEOUT 0x06 | |
474 | #define DRIVER_HARD 0x07 | |
475 | #define DRIVER_SENSE 0x08 | |
476 | ||
1da177e4 LT |
477 | /* |
478 | * Internal return values. | |
479 | */ | |
480 | ||
481 | #define NEEDS_RETRY 0x2001 | |
482 | #define SUCCESS 0x2002 | |
483 | #define FAILED 0x2003 | |
484 | #define QUEUED 0x2004 | |
485 | #define SOFT_ERROR 0x2005 | |
486 | #define ADD_TO_MLQUEUE 0x2006 | |
487 | #define TIMEOUT_ERROR 0x2007 | |
a6a8d9f8 | 488 | #define SCSI_RETURN_NOT_HANDLED 0x2008 |
2f2eb587 | 489 | #define FAST_IO_FAIL 0x2009 |
63583cca | 490 | #define TARGET_ERROR 0x200A |
1da177e4 LT |
491 | |
492 | /* | |
493 | * Midlevel queue return values. | |
494 | */ | |
495 | #define SCSI_MLQUEUE_HOST_BUSY 0x1055 | |
496 | #define SCSI_MLQUEUE_DEVICE_BUSY 0x1056 | |
497 | #define SCSI_MLQUEUE_EH_RETRY 0x1057 | |
f0c0a376 | 498 | #define SCSI_MLQUEUE_TARGET_BUSY 0x1058 |
1da177e4 LT |
499 | |
500 | /* | |
501 | * Use these to separate status msg and our bytes | |
502 | * | |
503 | * These are set by: | |
504 | * | |
505 | * status byte = set from target device | |
506 | * msg_byte = return status from host adapter itself. | |
507 | * host_byte = set by low-level driver to indicate status. | |
508 | * driver_byte = set by mid-level. | |
509 | */ | |
510 | #define status_byte(result) (((result) >> 1) & 0x7f) | |
511 | #define msg_byte(result) (((result) >> 8) & 0xff) | |
512 | #define host_byte(result) (((result) >> 16) & 0xff) | |
513 | #define driver_byte(result) (((result) >> 24) & 0xff) | |
1da177e4 LT |
514 | |
515 | #define sense_class(sense) (((sense) >> 4) & 0x7) | |
516 | #define sense_error(sense) ((sense) & 0xf) | |
497888cf | 517 | #define sense_valid(sense) ((sense) & 0x80) |
1da177e4 | 518 | |
b6651129 CH |
519 | /* |
520 | * default timeouts | |
521 | */ | |
522 | #define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ) | |
523 | #define START_STOP_TIMEOUT (60 * HZ) | |
524 | #define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ) | |
525 | #define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ) | |
526 | #define READ_DEFECT_DATA_TIMEOUT (60 * HZ ) | |
527 | ||
1da177e4 LT |
528 | |
529 | #define IDENTIFY_BASE 0x80 | |
530 | #define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\ | |
531 | ((can_disconnect) ? 0x40 : 0) |\ | |
532 | ((lun) & 0x07)) | |
533 | ||
534 | /* | |
535 | * struct scsi_device::scsi_level values. For SCSI devices other than those | |
536 | * prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1) | |
537 | * where "resp" is a byte array of the response to an INQUIRY. The scsi_level | |
538 | * variable is visible to the user via sysfs. | |
539 | */ | |
540 | ||
541 | #define SCSI_UNKNOWN 0 | |
542 | #define SCSI_1 1 | |
543 | #define SCSI_1_CCS 2 | |
544 | #define SCSI_2 3 | |
545 | #define SCSI_3 4 /* SPC */ | |
546 | #define SCSI_SPC_2 5 | |
547 | #define SCSI_SPC_3 6 | |
548 | ||
549 | /* | |
550 | * INQ PERIPHERAL QUALIFIERS | |
551 | */ | |
552 | #define SCSI_INQ_PQ_CON 0x00 | |
553 | #define SCSI_INQ_PQ_NOT_CON 0x01 | |
554 | #define SCSI_INQ_PQ_NOT_CAP 0x03 | |
555 | ||
556 | ||
557 | /* | |
558 | * Here are some scsi specific ioctl commands which are sometimes useful. | |
559 | * | |
560 | * Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395 | |
561 | */ | |
562 | ||
563 | /* Used to obtain PUN and LUN info. Conflicts with CDROMAUDIOBUFSIZ */ | |
564 | #define SCSI_IOCTL_GET_IDLUN 0x5382 | |
565 | ||
566 | /* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */ | |
567 | ||
568 | /* Used to obtain the host number of a device. */ | |
569 | #define SCSI_IOCTL_PROBE_HOST 0x5385 | |
570 | ||
571 | /* Used to obtain the bus number for a device */ | |
572 | #define SCSI_IOCTL_GET_BUS_NUMBER 0x5386 | |
573 | ||
574 | /* Used to obtain the PCI location of a device */ | |
575 | #define SCSI_IOCTL_GET_PCI 0x5387 | |
576 | ||
2908d778 | 577 | /* Pull a u32 out of a SCSI message (using BE SCSI conventions) */ |
4a531e8c | 578 | static inline __u32 scsi_to_u32(__u8 *ptr) |
2908d778 JB |
579 | { |
580 | return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3]; | |
581 | } | |
582 | ||
1da177e4 | 583 | #endif /* _SCSI_SCSI_H */ |