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> 12 13 #ifdef __KERNEL__ 14 #include <linux/scatterlist.h> 15 #include <linux/kernel.h> 16 17 struct scsi_cmnd; 18 19 enum scsi_timeouts { 20 SCSI_DEFAULT_EH_TIMEOUT = 10 * HZ, 21 }; 22 23 /* 24 * The maximum number of SG segments that we will put inside a 25 * scatterlist (unless chaining is used). Should ideally fit inside a 26 * single page, to avoid a higher order allocation. We could define this 27 * to SG_MAX_SINGLE_ALLOC to pack correctly at the highest order. The 28 * minimum value is 32 29 */ 30 #define SCSI_MAX_SG_SEGMENTS 128 31 32 /* 33 * Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit 34 * is totally arbitrary, a setting of 2048 will get you at least 8mb ios. 35 */ 36 #ifdef CONFIG_ARCH_HAS_SG_CHAIN 37 #define SCSI_MAX_SG_CHAIN_SEGMENTS 2048 38 #else 39 #define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS 40 #endif 41 42 /* 43 * DIX-capable adapters effectively support infinite chaining for the 44 * protection information scatterlist 45 */ 46 #define SCSI_MAX_PROT_SG_SEGMENTS 0xFFFF 47 48 /* 49 * Special value for scanning to specify scanning or rescanning of all 50 * possible channels, (target) ids, or luns on a given shost. 51 */ 52 #define SCAN_WILD_CARD ~0 53 #endif /* __KERNEL__ */ 54 55 /* 56 * SCSI opcodes 57 */ 58 59 #define TEST_UNIT_READY 0x00 60 #define REZERO_UNIT 0x01 61 #define REQUEST_SENSE 0x03 62 #define FORMAT_UNIT 0x04 63 #define READ_BLOCK_LIMITS 0x05 64 #define REASSIGN_BLOCKS 0x07 65 #define INITIALIZE_ELEMENT_STATUS 0x07 66 #define READ_6 0x08 67 #define WRITE_6 0x0a 68 #define SEEK_6 0x0b 69 #define READ_REVERSE 0x0f 70 #define WRITE_FILEMARKS 0x10 71 #define SPACE 0x11 72 #define INQUIRY 0x12 73 #define RECOVER_BUFFERED_DATA 0x14 74 #define MODE_SELECT 0x15 75 #define RESERVE 0x16 76 #define RELEASE 0x17 77 #define COPY 0x18 78 #define ERASE 0x19 79 #define MODE_SENSE 0x1a 80 #define START_STOP 0x1b 81 #define RECEIVE_DIAGNOSTIC 0x1c 82 #define SEND_DIAGNOSTIC 0x1d 83 #define ALLOW_MEDIUM_REMOVAL 0x1e 84 85 #define READ_FORMAT_CAPACITIES 0x23 86 #define SET_WINDOW 0x24 87 #define READ_CAPACITY 0x25 88 #define READ_10 0x28 89 #define WRITE_10 0x2a 90 #define SEEK_10 0x2b 91 #define POSITION_TO_ELEMENT 0x2b 92 #define WRITE_VERIFY 0x2e 93 #define VERIFY 0x2f 94 #define SEARCH_HIGH 0x30 95 #define SEARCH_EQUAL 0x31 96 #define SEARCH_LOW 0x32 97 #define SET_LIMITS 0x33 98 #define PRE_FETCH 0x34 99 #define READ_POSITION 0x34 100 #define SYNCHRONIZE_CACHE 0x35 101 #define LOCK_UNLOCK_CACHE 0x36 102 #define READ_DEFECT_DATA 0x37 103 #define MEDIUM_SCAN 0x38 104 #define COMPARE 0x39 105 #define COPY_VERIFY 0x3a 106 #define WRITE_BUFFER 0x3b 107 #define READ_BUFFER 0x3c 108 #define UPDATE_BLOCK 0x3d 109 #define READ_LONG 0x3e 110 #define WRITE_LONG 0x3f 111 #define CHANGE_DEFINITION 0x40 112 #define WRITE_SAME 0x41 113 #define UNMAP 0x42 114 #define READ_TOC 0x43 115 #define READ_HEADER 0x44 116 #define GET_EVENT_STATUS_NOTIFICATION 0x4a 117 #define LOG_SELECT 0x4c 118 #define LOG_SENSE 0x4d 119 #define XDWRITEREAD_10 0x53 120 #define MODE_SELECT_10 0x55 121 #define RESERVE_10 0x56 122 #define RELEASE_10 0x57 123 #define MODE_SENSE_10 0x5a 124 #define PERSISTENT_RESERVE_IN 0x5e 125 #define PERSISTENT_RESERVE_OUT 0x5f 126 #define VARIABLE_LENGTH_CMD 0x7f 127 #define REPORT_LUNS 0xa0 128 #define SECURITY_PROTOCOL_IN 0xa2 129 #define MAINTENANCE_IN 0xa3 130 #define MAINTENANCE_OUT 0xa4 131 #define MOVE_MEDIUM 0xa5 132 #define EXCHANGE_MEDIUM 0xa6 133 #define READ_12 0xa8 134 #define WRITE_12 0xaa 135 #define READ_MEDIA_SERIAL_NUMBER 0xab 136 #define WRITE_VERIFY_12 0xae 137 #define VERIFY_12 0xaf 138 #define SEARCH_HIGH_12 0xb0 139 #define SEARCH_EQUAL_12 0xb1 140 #define SEARCH_LOW_12 0xb2 141 #define SECURITY_PROTOCOL_OUT 0xb5 142 #define READ_ELEMENT_STATUS 0xb8 143 #define SEND_VOLUME_TAG 0xb6 144 #define WRITE_LONG_2 0xea 145 #define EXTENDED_COPY 0x83 146 #define RECEIVE_COPY_RESULTS 0x84 147 #define ACCESS_CONTROL_IN 0x86 148 #define ACCESS_CONTROL_OUT 0x87 149 #define READ_16 0x88 150 #define COMPARE_AND_WRITE 0x89 151 #define WRITE_16 0x8a 152 #define READ_ATTRIBUTE 0x8c 153 #define WRITE_ATTRIBUTE 0x8d 154 #define VERIFY_16 0x8f 155 #define SYNCHRONIZE_CACHE_16 0x91 156 #define WRITE_SAME_16 0x93 157 #define SERVICE_ACTION_IN 0x9e 158 #ifdef __KERNEL__ 159 /* values for service action in */ 160 #define SAI_READ_CAPACITY_16 0x10 161 #define SAI_GET_LBA_STATUS 0x12 162 #define SAI_REPORT_REFERRALS 0x13 163 /* values for VARIABLE_LENGTH_CMD service action codes 164 * see spc4r17 Section D.3.5, table D.7 and D.8 */ 165 #define VLC_SA_RECEIVE_CREDENTIAL 0x1800 166 /* values for maintenance in */ 167 #define MI_REPORT_IDENTIFYING_INFORMATION 0x05 168 #define MI_REPORT_TARGET_PGS 0x0a 169 #define MI_REPORT_ALIASES 0x0b 170 #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c 171 #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d 172 #define MI_REPORT_PRIORITY 0x0e 173 #define MI_REPORT_TIMESTAMP 0x0f 174 #define MI_MANAGEMENT_PROTOCOL_IN 0x10 175 /* value for MI_REPORT_TARGET_PGS ext header */ 176 #define MI_EXT_HDR_PARAM_FMT 0x20 177 /* values for maintenance out */ 178 #define MO_SET_IDENTIFYING_INFORMATION 0x06 179 #define MO_SET_TARGET_PGS 0x0a 180 #define MO_CHANGE_ALIASES 0x0b 181 #define MO_SET_PRIORITY 0x0e 182 #define MO_SET_TIMESTAMP 0x0f 183 #define MO_MANAGEMENT_PROTOCOL_OUT 0x10 184 /* values for variable length command */ 185 #define XDREAD_32 0x03 186 #define XDWRITE_32 0x04 187 #define XPWRITE_32 0x06 188 #define XDWRITEREAD_32 0x07 189 #define READ_32 0x09 190 #define VERIFY_32 0x0a 191 #define WRITE_32 0x0b 192 #define WRITE_SAME_32 0x0d 193 194 /* Values for T10/04-262r7 */ 195 #define ATA_16 0x85 /* 16-byte pass-thru */ 196 #define ATA_12 0xa1 /* 12-byte pass-thru */ 197 198 /* 199 * SCSI command lengths 200 */ 201 202 #define SCSI_MAX_VARLEN_CDB_SIZE 260 203 204 /* defined in T10 SCSI Primary Commands-2 (SPC2) */ 205 struct scsi_varlen_cdb_hdr { 206 __u8 opcode; /* opcode always == VARIABLE_LENGTH_CMD */ 207 __u8 control; 208 __u8 misc[5]; 209 __u8 additional_cdb_length; /* total cdb length - 8 */ 210 __be16 service_action; 211 /* service specific data follows */ 212 }; 213 214 static inline unsigned 215 scsi_varlen_cdb_length(const void *hdr) 216 { 217 return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8; 218 } 219 220 extern const unsigned char scsi_command_size_tbl[8]; 221 #define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7] 222 223 static inline unsigned 224 scsi_command_size(const unsigned char *cmnd) 225 { 226 return (cmnd[0] == VARIABLE_LENGTH_CMD) ? 227 scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]); 228 } 229 230 #ifdef CONFIG_ACPI 231 struct acpi_bus_type; 232 233 extern int 234 scsi_register_acpi_bus_type(struct acpi_bus_type *bus); 235 236 extern void 237 scsi_unregister_acpi_bus_type(struct acpi_bus_type *bus); 238 #endif 239 240 /* 241 * SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft 242 * T10/1561-D Revision 4 Draft dated 7th November 2002. 243 */ 244 #define SAM_STAT_GOOD 0x00 245 #define SAM_STAT_CHECK_CONDITION 0x02 246 #define SAM_STAT_CONDITION_MET 0x04 247 #define SAM_STAT_BUSY 0x08 248 #define SAM_STAT_INTERMEDIATE 0x10 249 #define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14 250 #define SAM_STAT_RESERVATION_CONFLICT 0x18 251 #define SAM_STAT_COMMAND_TERMINATED 0x22 /* obsolete in SAM-3 */ 252 #define SAM_STAT_TASK_SET_FULL 0x28 253 #define SAM_STAT_ACA_ACTIVE 0x30 254 #define SAM_STAT_TASK_ABORTED 0x40 255 256 /** scsi_status_is_good - check the status return. 257 * 258 * @status: the status passed up from the driver (including host and 259 * driver components) 260 * 261 * This returns true for known good conditions that may be treated as 262 * command completed normally 263 */ 264 static inline int scsi_status_is_good(int status) 265 { 266 /* 267 * FIXME: bit0 is listed as reserved in SCSI-2, but is 268 * significant in SCSI-3. For now, we follow the SCSI-2 269 * behaviour and ignore reserved bits. 270 */ 271 status &= 0xfe; 272 return ((status == SAM_STAT_GOOD) || 273 (status == SAM_STAT_INTERMEDIATE) || 274 (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || 275 /* FIXME: this is obsolete in SAM-3 */ 276 (status == SAM_STAT_COMMAND_TERMINATED)); 277 } 278 #endif /* __KERNEL__ */ 279 280 /* 281 * Status codes. These are deprecated as they are shifted 1 bit right 282 * from those found in the SCSI standards. This causes confusion for 283 * applications that are ported to several OSes. Prefer SAM Status codes 284 * above. 285 */ 286 287 #define GOOD 0x00 288 #define CHECK_CONDITION 0x01 289 #define CONDITION_GOOD 0x02 290 #define BUSY 0x04 291 #define INTERMEDIATE_GOOD 0x08 292 #define INTERMEDIATE_C_GOOD 0x0a 293 #define RESERVATION_CONFLICT 0x0c 294 #define COMMAND_TERMINATED 0x11 295 #define QUEUE_FULL 0x14 296 #define ACA_ACTIVE 0x18 297 #define TASK_ABORTED 0x20 298 299 #define STATUS_MASK 0xfe 300 301 /* 302 * SENSE KEYS 303 */ 304 305 #define NO_SENSE 0x00 306 #define RECOVERED_ERROR 0x01 307 #define NOT_READY 0x02 308 #define MEDIUM_ERROR 0x03 309 #define HARDWARE_ERROR 0x04 310 #define ILLEGAL_REQUEST 0x05 311 #define UNIT_ATTENTION 0x06 312 #define DATA_PROTECT 0x07 313 #define BLANK_CHECK 0x08 314 #define COPY_ABORTED 0x0a 315 #define ABORTED_COMMAND 0x0b 316 #define VOLUME_OVERFLOW 0x0d 317 #define MISCOMPARE 0x0e 318 319 320 /* 321 * DEVICE TYPES 322 * Please keep them in 0x%02x format for $MODALIAS to work 323 */ 324 325 #define TYPE_DISK 0x00 326 #define TYPE_TAPE 0x01 327 #define TYPE_PRINTER 0x02 328 #define TYPE_PROCESSOR 0x03 /* HP scanners use this */ 329 #define TYPE_WORM 0x04 /* Treated as ROM by our system */ 330 #define TYPE_ROM 0x05 331 #define TYPE_SCANNER 0x06 332 #define TYPE_MOD 0x07 /* Magneto-optical disk - 333 * - treated as TYPE_DISK */ 334 #define TYPE_MEDIUM_CHANGER 0x08 335 #define TYPE_COMM 0x09 /* Communications device */ 336 #define TYPE_RAID 0x0c 337 #define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */ 338 #define TYPE_RBC 0x0e 339 #define TYPE_OSD 0x11 340 #define TYPE_ZBC 0x14 341 #define TYPE_WLUN 0x1e /* well-known logical unit */ 342 #define TYPE_NO_LUN 0x7f 343 344 #ifdef __KERNEL__ 345 /* SCSI protocols; these are taken from SPC-3 section 7.5 */ 346 enum scsi_protocol { 347 SCSI_PROTOCOL_FCP = 0, /* Fibre Channel */ 348 SCSI_PROTOCOL_SPI = 1, /* parallel SCSI */ 349 SCSI_PROTOCOL_SSA = 2, /* Serial Storage Architecture - Obsolete */ 350 SCSI_PROTOCOL_SBP = 3, /* firewire */ 351 SCSI_PROTOCOL_SRP = 4, /* Infiniband RDMA */ 352 SCSI_PROTOCOL_ISCSI = 5, 353 SCSI_PROTOCOL_SAS = 6, 354 SCSI_PROTOCOL_ADT = 7, /* Media Changers */ 355 SCSI_PROTOCOL_ATA = 8, 356 SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */ 357 }; 358 359 /* Returns a human-readable name for the device */ 360 extern const char * scsi_device_type(unsigned type); 361 #endif 362 363 /* 364 * standard mode-select header prepended to all mode-select commands 365 */ 366 367 struct ccs_modesel_head { 368 __u8 _r1; /* reserved */ 369 __u8 medium; /* device-specific medium type */ 370 __u8 _r2; /* reserved */ 371 __u8 block_desc_length; /* block descriptor length */ 372 __u8 density; /* device-specific density code */ 373 __u8 number_blocks_hi; /* number of blocks in this block desc */ 374 __u8 number_blocks_med; 375 __u8 number_blocks_lo; 376 __u8 _r3; 377 __u8 block_length_hi; /* block length for blocks in this desc */ 378 __u8 block_length_med; 379 __u8 block_length_lo; 380 }; 381 382 #ifdef __KERNEL__ 383 /* 384 * ScsiLun: 8 byte LUN. 385 */ 386 struct scsi_lun { 387 __u8 scsi_lun[8]; 388 }; 389 390 /* 391 * The Well Known LUNS (SAM-3) in our int representation of a LUN 392 */ 393 #define SCSI_W_LUN_BASE 0xc100 394 #define SCSI_W_LUN_REPORT_LUNS (SCSI_W_LUN_BASE + 1) 395 #define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2) 396 #define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3) 397 398 static inline int scsi_is_wlun(u64 lun) 399 { 400 return (lun & 0xff00) == SCSI_W_LUN_BASE; 401 } 402 #endif 403 404 /* 405 * MESSAGE CODES 406 */ 407 408 #define COMMAND_COMPLETE 0x00 409 #define EXTENDED_MESSAGE 0x01 410 #define EXTENDED_MODIFY_DATA_POINTER 0x00 411 #define EXTENDED_SDTR 0x01 412 #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ 413 #define EXTENDED_WDTR 0x03 414 #define EXTENDED_PPR 0x04 415 #define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05 416 #define SAVE_POINTERS 0x02 417 #define RESTORE_POINTERS 0x03 418 #define DISCONNECT 0x04 419 #define INITIATOR_ERROR 0x05 420 #define ABORT_TASK_SET 0x06 421 #define MESSAGE_REJECT 0x07 422 #define NOP 0x08 423 #define MSG_PARITY_ERROR 0x09 424 #define LINKED_CMD_COMPLETE 0x0a 425 #define LINKED_FLG_CMD_COMPLETE 0x0b 426 #define TARGET_RESET 0x0c 427 #define ABORT_TASK 0x0d 428 #define CLEAR_TASK_SET 0x0e 429 #define INITIATE_RECOVERY 0x0f /* SCSI-II only */ 430 #define RELEASE_RECOVERY 0x10 /* SCSI-II only */ 431 #define CLEAR_ACA 0x16 432 #define LOGICAL_UNIT_RESET 0x17 433 #define SIMPLE_QUEUE_TAG 0x20 434 #define HEAD_OF_QUEUE_TAG 0x21 435 #define ORDERED_QUEUE_TAG 0x22 436 #define IGNORE_WIDE_RESIDUE 0x23 437 #define ACA 0x24 438 #define QAS_REQUEST 0x55 439 440 /* Old SCSI2 names, don't use in new code */ 441 #define BUS_DEVICE_RESET TARGET_RESET 442 #define ABORT ABORT_TASK_SET 443 444 #ifdef __KERNEL__ 445 /* 446 * Host byte codes 447 */ 448 449 #define DID_OK 0x00 /* NO error */ 450 #define DID_NO_CONNECT 0x01 /* Couldn't connect before timeout period */ 451 #define DID_BUS_BUSY 0x02 /* BUS stayed busy through time out period */ 452 #define DID_TIME_OUT 0x03 /* TIMED OUT for other reason */ 453 #define DID_BAD_TARGET 0x04 /* BAD target. */ 454 #define DID_ABORT 0x05 /* Told to abort for some other reason */ 455 #define DID_PARITY 0x06 /* Parity error */ 456 #define DID_ERROR 0x07 /* Internal error */ 457 #define DID_RESET 0x08 /* Reset by somebody. */ 458 #define DID_BAD_INTR 0x09 /* Got an interrupt we weren't expecting. */ 459 #define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */ 460 #define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */ 461 #define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */ 462 #define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also 463 * without decrementing the retry count */ 464 #define DID_TRANSPORT_DISRUPTED 0x0e /* Transport error disrupted execution 465 * and the driver blocked the port to 466 * recover the link. Transport class will 467 * retry or fail IO */ 468 #define DID_TRANSPORT_FAILFAST 0x0f /* Transport class fastfailed the io */ 469 #define DID_TARGET_FAILURE 0x10 /* Permanent target failure, do not retry on 470 * other paths */ 471 #define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other 472 * paths might yield different results */ 473 #define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */ 474 #define DID_MEDIUM_ERROR 0x13 /* Medium error */ 475 #define DRIVER_OK 0x00 /* Driver status */ 476 477 /* 478 * These indicate the error that occurred, and what is available. 479 */ 480 481 #define DRIVER_BUSY 0x01 482 #define DRIVER_SOFT 0x02 483 #define DRIVER_MEDIA 0x03 484 #define DRIVER_ERROR 0x04 485 486 #define DRIVER_INVALID 0x05 487 #define DRIVER_TIMEOUT 0x06 488 #define DRIVER_HARD 0x07 489 #define DRIVER_SENSE 0x08 490 491 /* 492 * Internal return values. 493 */ 494 495 #define NEEDS_RETRY 0x2001 496 #define SUCCESS 0x2002 497 #define FAILED 0x2003 498 #define QUEUED 0x2004 499 #define SOFT_ERROR 0x2005 500 #define ADD_TO_MLQUEUE 0x2006 501 #define TIMEOUT_ERROR 0x2007 502 #define SCSI_RETURN_NOT_HANDLED 0x2008 503 #define FAST_IO_FAIL 0x2009 504 505 /* 506 * Midlevel queue return values. 507 */ 508 #define SCSI_MLQUEUE_HOST_BUSY 0x1055 509 #define SCSI_MLQUEUE_DEVICE_BUSY 0x1056 510 #define SCSI_MLQUEUE_EH_RETRY 0x1057 511 #define SCSI_MLQUEUE_TARGET_BUSY 0x1058 512 513 /* 514 * Use these to separate status msg and our bytes 515 * 516 * These are set by: 517 * 518 * status byte = set from target device 519 * msg_byte = return status from host adapter itself. 520 * host_byte = set by low-level driver to indicate status. 521 * driver_byte = set by mid-level. 522 */ 523 #define status_byte(result) (((result) >> 1) & 0x7f) 524 #define msg_byte(result) (((result) >> 8) & 0xff) 525 #define host_byte(result) (((result) >> 16) & 0xff) 526 #define driver_byte(result) (((result) >> 24) & 0xff) 527 528 #define sense_class(sense) (((sense) >> 4) & 0x7) 529 #define sense_error(sense) ((sense) & 0xf) 530 #define sense_valid(sense) ((sense) & 0x80) 531 532 /* 533 * default timeouts 534 */ 535 #define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ) 536 #define START_STOP_TIMEOUT (60 * HZ) 537 #define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ) 538 #define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ) 539 #define READ_DEFECT_DATA_TIMEOUT (60 * HZ ) 540 541 542 #define IDENTIFY_BASE 0x80 543 #define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\ 544 ((can_disconnect) ? 0x40 : 0) |\ 545 ((lun) & 0x07)) 546 547 /* 548 * struct scsi_device::scsi_level values. For SCSI devices other than those 549 * prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1) 550 * where "resp" is a byte array of the response to an INQUIRY. The scsi_level 551 * variable is visible to the user via sysfs. 552 */ 553 554 #define SCSI_UNKNOWN 0 555 #define SCSI_1 1 556 #define SCSI_1_CCS 2 557 #define SCSI_2 3 558 #define SCSI_3 4 /* SPC */ 559 #define SCSI_SPC_2 5 560 #define SCSI_SPC_3 6 561 562 /* 563 * INQ PERIPHERAL QUALIFIERS 564 */ 565 #define SCSI_INQ_PQ_CON 0x00 566 #define SCSI_INQ_PQ_NOT_CON 0x01 567 #define SCSI_INQ_PQ_NOT_CAP 0x03 568 #endif /* __KERNEL__ */ 569 570 /* 571 * Here are some scsi specific ioctl commands which are sometimes useful. 572 * 573 * Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395 574 */ 575 576 /* Used to obtain PUN and LUN info. Conflicts with CDROMAUDIOBUFSIZ */ 577 #define SCSI_IOCTL_GET_IDLUN 0x5382 578 579 /* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */ 580 581 /* Used to obtain the host number of a device. */ 582 #define SCSI_IOCTL_PROBE_HOST 0x5385 583 584 /* Used to obtain the bus number for a device */ 585 #define SCSI_IOCTL_GET_BUS_NUMBER 0x5386 586 587 /* Used to obtain the PCI location of a device */ 588 #define SCSI_IOCTL_GET_PCI 0x5387 589 590 #ifdef __KERNEL__ 591 /* Pull a u32 out of a SCSI message (using BE SCSI conventions) */ 592 static inline __u32 scsi_to_u32(__u8 *ptr) 593 { 594 return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3]; 595 } 596 #endif /* __KERNEL__ */ 597 598 #endif /* _SCSI_SCSI_H */ 599
