sys/bus/cam/scsi/scsi_all.h

   1 /*
   2  * Largely written by Julian Elischer (julian@tfs.com)
   3  * for TRW Financial Systems.
   4  *
   5  * TRW Financial Systems, in accordance with their agreement with Carnegie
   6  * Mellon University, makes this software available to CMU to distribute
   7  * or use in any manner that they see fit as long as this message is kept with
   8  * the software. For this reason TFS also grants any other persons or
   9  * organisations permission to use or modify this software.
  10  *
  11  * TFS supplies this software to be publicly redistributed
  12  * on the understanding that TFS is not responsible for the correct
  13  * functioning of this software in any circumstances.
  14  *
  15  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  16  *
  17  * $FreeBSD: src/sys/cam/scsi/scsi_all.h,v 1.14.2.5 2003/08/24 03:26:37 ken Exp $
  18  * $DragonFly: src/sys/bus/cam/scsi/scsi_all.h,v 1.12 2007/12/02 03:41:58 pavalos Exp $
  19  */
  20
  21 /*
  22  * SCSI general  interface description
  23  */
  24
  25 #ifndef _SCSI_SCSI_ALL_H
  26 #define _SCSI_SCSI_ALL_H 1
  27
  28 #ifndef _SYS_CDEFS_H_
  29 #include <sys/cdefs.h>
  30 #endif
  31 #if !defined(_KERNEL) && !defined(_STDIO_H_)
  32 #include <stdio.h>      /* FILE for userland protos */
  33 #endif
  34
  35 #ifdef _KERNEL
  36 /*
  37  * This is the number of seconds we wait for devices to settle after a SCSI
  38  * bus reset.
  39  */
  40 extern int scsi_delay;
  41 #endif /* _KERNEL */
  42
  43 /*
  44  * SCSI command format
  45  */
  46
  47 /*
  48  * Define dome bits that are in ALL (or a lot of) scsi commands
  49  */
  50 #define SCSI_CTL_LINK           0x01
  51 #define SCSI_CTL_FLAG           0x02
  52 #define SCSI_CTL_VENDOR         0xC0
  53 #define SCSI_CMD_LUN            0xA0    /* these two should not be needed */
  54 #define SCSI_CMD_LUN_SHIFT      5       /* LUN in the cmd is no longer SCSI */
  55
  56 #define SCSI_MAX_CDBLEN         16      /*
  57                                          * 16 byte commands are in the
  58                                          * SCSI-3 spec
  59                                          */
  60 #if defined(CAM_MAX_CDBLEN) && (CAM_MAX_CDBLEN < SCSI_MAX_CDBLEN)
  61 #error "CAM_MAX_CDBLEN cannot be less than SCSI_MAX_CDBLEN"
  62 #endif
  63
  64 /* 6byte CDBs special case 0 length to be 256 */
  65 #define SCSI_CDB6_LEN(len)      ((len) == 0 ? 256 : len)
  66
  67 /*
  68  * This type defines actions to be taken when a particular sense code is
  69  * received.  Right now, these flags are only defined to take up 16 bits,
  70  * but can be expanded in the future if necessary.
  71  */
  72 typedef enum {
  73         SS_NOP      = 0x000000, /* Do nothing */
  74         SS_RETRY    = 0x010000, /* Retry the command */
  75         SS_FAIL     = 0x020000, /* Bail out */
  76         SS_START    = 0x030000, /* Send a Start Unit command to the device,
  77                                  * then retry the original command.
  78                                  */
  79         SS_TUR      = 0x040000, /* Send a Test Unit Ready command to the
  80                                  * device, then retry the original command.
  81                                  */
  82         SS_REQSENSE = 0x050000, /* Send a RequestSense command to the
  83                                  * device, then retry the original command.
  84                                  */
  85         SS_MASK     = 0xff0000
  86 } scsi_sense_action;
  87
  88 typedef enum {
  89         SSQ_NONE                = 0x0000,
  90         SSQ_DECREMENT_COUNT     = 0x0100,  /* Decrement the retry count */
  91         SSQ_MANY                = 0x0200,  /* send lots of recovery commands */
  92         SSQ_RANGE               = 0x0400,  /*
  93                                             * This table entry represents the
  94                                             * end of a range of ASCQs that
  95                                             * have identical error actions
  96                                             * and text.
  97                                             */
  98         SSQ_PRINT_SENSE         = 0x0800,
  99         SSQ_MASK                = 0xff00
 100 } scsi_sense_action_qualifier;
 101
 102 /* Mask for error status values */
 103 #define SS_ERRMASK      0xff
 104
 105 /* The default, retyable, error action */
 106 #define SS_RDEF         SS_RETRY|SSQ_DECREMENT_COUNT|SSQ_PRINT_SENSE|EIO
 107
 108 /* The retyable, error action, with table specified error code */
 109 #define SS_RET          SS_RETRY|SSQ_DECREMENT_COUNT|SSQ_PRINT_SENSE
 110
 111 /* Fatal error action, with table specified error code */
 112 #define SS_FATAL        SS_FAIL|SSQ_PRINT_SENSE
 113
 114 struct scsi_generic
 115 {
 116         u_int8_t opcode;
 117         u_int8_t bytes[11];
 118 };
 119
 120 struct scsi_request_sense
 121 {
 122         u_int8_t opcode;
 123         u_int8_t byte2;
 124         u_int8_t unused[2];
 125         u_int8_t length;
 126         u_int8_t control;
 127 };
 128
 129 struct scsi_test_unit_ready
 130 {
 131         u_int8_t opcode;
 132         u_int8_t byte2;
 133         u_int8_t unused[3];
 134         u_int8_t control;
 135 };
 136
 137 struct scsi_send_diag
 138 {
 139         u_int8_t opcode;
 140         u_int8_t byte2;
 141 #define SSD_UOL         0x01
 142 #define SSD_DOL         0x02
 143 #define SSD_SELFTEST    0x04
 144 #define SSD_PF          0x10
 145         u_int8_t unused[1];
 146         u_int8_t paramlen[2];
 147         u_int8_t control;
 148 };
 149
 150 struct scsi_sense
 151 {
 152         u_int8_t opcode;
 153         u_int8_t byte2;
 154         u_int8_t unused[2];
 155         u_int8_t length;
 156         u_int8_t control;
 157 };
 158
 159 struct scsi_inquiry
 160 {
 161         u_int8_t opcode;
 162         u_int8_t byte2;
 163 #define SI_EVPD 0x01
 164         u_int8_t page_code;
 165         u_int8_t reserved;
 166         u_int8_t length;
 167         u_int8_t control;
 168 };
 169
 170 struct scsi_mode_sense_6
 171 {
 172         u_int8_t opcode;
 173         u_int8_t byte2;
 174 #define SMS_DBD                         0x08
 175         u_int8_t page;
 176 #define SMS_PAGE_CODE                   0x3F
 177 #define SMS_VENDOR_SPECIFIC_PAGE        0x00
 178 #define SMS_DISCONNECT_RECONNECT_PAGE   0x02
 179 #define SMS_PERIPHERAL_DEVICE_PAGE      0x09
 180 #define SMS_CONTROL_MODE_PAGE           0x0A
 181 #define SMS_ALL_PAGES_PAGE              0x3F
 182 #define SMS_PAGE_CTRL_MASK              0xC0
 183 #define SMS_PAGE_CTRL_CURRENT           0x00
 184 #define SMS_PAGE_CTRL_CHANGEABLE        0x40
 185 #define SMS_PAGE_CTRL_DEFAULT           0x80
 186 #define SMS_PAGE_CTRL_SAVED             0xC0
 187         u_int8_t unused;
 188         u_int8_t length;
 189         u_int8_t control;
 190 };
 191
 192 struct scsi_mode_sense_10
 193 {
 194         u_int8_t opcode;
 195         u_int8_t byte2;         /* same bits as small version */
 196         u_int8_t page;          /* same bits as small version */
 197         u_int8_t unused[4];
 198         u_int8_t length[2];
 199         u_int8_t control;
 200 };
 201
 202 struct scsi_mode_select_6
 203 {
 204         u_int8_t opcode;
 205         u_int8_t byte2;
 206 #define SMS_SP  0x01
 207 #define SMS_PF  0x10
 208         u_int8_t unused[2];
 209         u_int8_t length;
 210         u_int8_t control;
 211 };
 212
 213 struct scsi_mode_select_10
 214 {
 215         u_int8_t opcode;
 216         u_int8_t byte2;         /* same bits as small version */
 217         u_int8_t unused[5];
 218         u_int8_t length[2];
 219         u_int8_t control;
 220 };
 221
 222 /*
 223  * When sending a mode select to a tape drive, the medium type must be 0.
 224  */
 225 struct scsi_mode_hdr_6
 226 {
 227         u_int8_t datalen;
 228         u_int8_t medium_type;
 229         u_int8_t dev_specific;
 230         u_int8_t block_descr_len;
 231 };
 232
 233 struct scsi_mode_hdr_10
 234 {
 235         u_int8_t datalen[2];
 236         u_int8_t medium_type;
 237         u_int8_t dev_specific;
 238         u_int8_t reserved[2];
 239         u_int8_t block_descr_len[2];
 240 };
 241
 242 struct scsi_mode_block_descr
 243 {
 244         u_int8_t density_code;
 245         u_int8_t num_blocks[3];
 246         u_int8_t reserved;
 247         u_int8_t block_len[3];
 248 };
 249
 250 struct scsi_log_sense
 251 {
 252         u_int8_t opcode;
 253         u_int8_t byte2;
 254 #define SLS_SP                          0x01
 255 #define SLS_PPC                         0x02
 256         u_int8_t page;
 257 #define SLS_PAGE_CODE                   0x3F
 258 #define SLS_ALL_PAGES_PAGE              0x00
 259 #define SLS_OVERRUN_PAGE                0x01
 260 #define SLS_ERROR_WRITE_PAGE            0x02
 261 #define SLS_ERROR_READ_PAGE             0x03
 262 #define SLS_ERROR_READREVERSE_PAGE      0x04
 263 #define SLS_ERROR_VERIFY_PAGE           0x05
 264 #define SLS_ERROR_NONMEDIUM_PAGE        0x06
 265 #define SLS_ERROR_LASTN_PAGE            0x07
 266 #define SLS_PAGE_CTRL_MASK              0xC0
 267 #define SLS_PAGE_CTRL_THRESHOLD         0x00
 268 #define SLS_PAGE_CTRL_CUMULATIVE        0x40
 269 #define SLS_PAGE_CTRL_THRESH_DEFAULT    0x80
 270 #define SLS_PAGE_CTRL_CUMUL_DEFAULT     0xC0
 271         u_int8_t reserved[2];
 272         u_int8_t paramptr[2];
 273         u_int8_t length[2];
 274         u_int8_t control;
 275 };
 276
 277 struct scsi_log_select
 278 {
 279         u_int8_t opcode;
 280         u_int8_t byte2;
 281 /*      SLS_SP                          0x01 */
 282 #define SLS_PCR                         0x02
 283         u_int8_t page;
 284 /*      SLS_PAGE_CTRL_MASK              0xC0 */
 285 /*      SLS_PAGE_CTRL_THRESHOLD         0x00 */
 286 /*      SLS_PAGE_CTRL_CUMULATIVE        0x40 */
 287 /*      SLS_PAGE_CTRL_THRESH_DEFAULT    0x80 */
 288 /*      SLS_PAGE_CTRL_CUMUL_DEFAULT     0xC0 */
 289         u_int8_t reserved[4];
 290         u_int8_t length[2];
 291         u_int8_t control;
 292 };
 293
 294 struct scsi_log_header
 295 {
 296         u_int8_t page;
 297         u_int8_t reserved;
 298         u_int8_t datalen[2];
 299 };
 300
 301 struct scsi_log_param_header {
 302         u_int8_t param_code[2];
 303         u_int8_t param_control;
 304 #define SLP_LP                          0x01
 305 #define SLP_LBIN                        0x02
 306 #define SLP_TMC_MASK                    0x0C
 307 #define SLP_TMC_ALWAYS                  0x00
 308 #define SLP_TMC_EQUAL                   0x04
 309 #define SLP_TMC_NOTEQUAL                0x08
 310 #define SLP_TMC_GREATER                 0x0C
 311 #define SLP_ETC                         0x10
 312 #define SLP_TSD                         0x20
 313 #define SLP_DS                          0x40
 314 #define SLP_DU                          0x80
 315         u_int8_t param_len;
 316 };
 317
 318 struct scsi_control_page {
 319         u_int8_t page_code;
 320         u_int8_t page_length;
 321         u_int8_t rlec;
 322 #define SCB_RLEC                        0x01    /*Report Log Exception Cond*/
 323         u_int8_t queue_flags;
 324 #define SCP_QUEUE_ALG_MASK              0xF0
 325 #define SCP_QUEUE_ALG_RESTRICTED        0x00
 326 #define SCP_QUEUE_ALG_UNRESTRICTED      0x10
 327 #define SCP_QUEUE_ERR                   0x02    /*Queued I/O aborted for CACs*/
 328 #define SCP_QUEUE_DQUE                  0x01    /*Queued I/O disabled*/
 329         u_int8_t eca_and_aen;
 330 #define SCP_EECA                        0x80    /*Enable Extended CA*/
 331 #define SCP_RAENP                       0x04    /*Ready AEN Permission*/
 332 #define SCP_UAAENP                      0x02    /*UA AEN Permission*/
 333 #define SCP_EAENP                       0x01    /*Error AEN Permission*/
 334         u_int8_t reserved;
 335         u_int8_t aen_holdoff_period[2];
 336 };
 337
 338 struct scsi_reserve
 339 {
 340         u_int8_t opcode;
 341         u_int8_t byte2;
 342         u_int8_t unused[2];
 343         u_int8_t length;
 344         u_int8_t control;
 345 };
 346
 347 struct scsi_release
 348 {
 349         u_int8_t opcode;
 350         u_int8_t byte2;
 351         u_int8_t unused[2];
 352         u_int8_t length;
 353         u_int8_t control;
 354 };
 355
 356 struct scsi_prevent
 357 {
 358         u_int8_t opcode;
 359         u_int8_t byte2;
 360         u_int8_t unused[2];
 361         u_int8_t how;
 362         u_int8_t control;
 363 };
 364 #define PR_PREVENT 0x01
 365 #define PR_ALLOW   0x00
 366
 367 struct scsi_sync_cache
 368 {
 369         u_int8_t opcode;
 370         u_int8_t byte2;
 371         u_int8_t begin_lba[4];
 372         u_int8_t reserved;
 373         u_int8_t lb_count[2];
 374         u_int8_t control;
 375 };
 376
 377
 378 struct scsi_changedef
 379 {
 380         u_int8_t opcode;
 381         u_int8_t byte2;
 382         u_int8_t unused1;
 383         u_int8_t how;
 384         u_int8_t unused[4];
 385         u_int8_t datalen;
 386         u_int8_t control;
 387 };
 388
 389 struct scsi_read_buffer
 390 {
 391         u_int8_t opcode;
 392         u_int8_t byte2;
 393 #define RWB_MODE                0x07
 394 #define RWB_MODE_HDR_DATA       0x00
 395 #define RWB_MODE_DATA           0x02
 396 #define RWB_MODE_DOWNLOAD       0x04
 397 #define RWB_MODE_DOWNLOAD_SAVE  0x05
 398         u_int8_t buffer_id;
 399         u_int8_t offset[3];
 400         u_int8_t length[3];
 401         u_int8_t control;
 402 };
 403
 404 struct scsi_write_buffer
 405 {
 406         u_int8_t opcode;
 407         u_int8_t byte2;
 408         u_int8_t buffer_id;
 409         u_int8_t offset[3];
 410         u_int8_t length[3];
 411         u_int8_t control;
 412 };
 413
 414 struct scsi_rw_6
 415 {
 416         u_int8_t opcode;
 417         u_int8_t addr[3];
 418 /* only 5 bits are valid in the MSB address byte */
 419 #define SRW_TOPADDR     0x1F
 420         u_int8_t length;
 421         u_int8_t control;
 422 };
 423
 424 struct scsi_rw_10
 425 {
 426         u_int8_t opcode;
 427 #define SRW10_RELADDR   0x01
 428 /* EBP defined for WRITE(10) only */
 429 #define SRW10_EBP       0x04
 430 #define SRW10_FUA       0x08
 431 #define SRW10_DPO       0x10
 432         u_int8_t byte2;
 433         u_int8_t addr[4];
 434         u_int8_t reserved;
 435         u_int8_t length[2];
 436         u_int8_t control;
 437 };
 438
 439 struct scsi_rw_12
 440 {
 441         u_int8_t opcode;
 442 #define SRW12_RELADDR   0x01
 443 #define SRW12_FUA       0x08
 444 #define SRW12_DPO       0x10
 445         u_int8_t byte2;
 446         u_int8_t addr[4];
 447         u_int8_t length[4];
 448         u_int8_t reserved;
 449         u_int8_t control;
 450 };
 451
 452 struct scsi_rw_16
 453 {
 454         u_int8_t opcode;
 455 #define        SRW16_RELADDR   0x01
 456 #define        SRW16_FUA       0x08
 457 #define        SRW16_DPO       0x10
 458         u_int8_t byte2;
 459         u_int8_t addr[8];
 460         u_int8_t length[4];
 461         u_int8_t reserved;
 462         u_int8_t control;
 463 };
 464
 465
 466 struct scsi_start_stop_unit
 467 {
 468         u_int8_t opcode;
 469         u_int8_t byte2;
 470 #define SSS_IMMED               0x01
 471         u_int8_t reserved[2];
 472         u_int8_t how;
 473 #define SSS_START               0x01
 474 #define SSS_LOEJ                0x02
 475         u_int8_t control;
 476 };
 477
 478 #define SC_SCSI_1 0x01
 479 #define SC_SCSI_2 0x03
 480
 481 /*
 482  * Opcodes
 483  */
 484
 485 #define TEST_UNIT_READY         0x00
 486 #define REQUEST_SENSE           0x03
 487 #define READ_6                  0x08
 488 #define WRITE_6                 0x0a
 489 #define INQUIRY                 0x12
 490 #define MODE_SELECT_6           0x15
 491 #define MODE_SENSE_6            0x1a
 492 #define START_STOP_UNIT         0x1b
 493 #define START_STOP              0x1b
 494 #define RESERVE                 0x16
 495 #define RELEASE                 0x17
 496 #define RECEIVE_DIAGNOSTIC      0x1c
 497 #define SEND_DIAGNOSTIC         0x1d
 498 #define PREVENT_ALLOW           0x1e
 499 #define READ_CAPACITY           0x25
 500 #define READ_10                 0x28
 501 #define WRITE_10                0x2a
 502 #define POSITION_TO_ELEMENT     0x2b
 503 #define SYNCHRONIZE_CACHE       0x35
 504 #define WRITE_BUFFER            0x3b
 505 #define READ_BUFFER             0x3c
 506 #define CHANGE_DEFINITION       0x40
 507 #define LOG_SELECT              0x4c
 508 #define LOG_SENSE               0x4d
 509 #define MODE_SELECT_10          0x55
 510 #define MODE_SENSE_10           0x5A
 511 #define READ_16                 0x88
 512 #define WRITE_16                0x8a
 513 #define SERVICE_ACTION_IN       0x9e
 514 #define REPORT_LUNS             0xa0
 515 #define MOVE_MEDIUM             0xa5
 516 #define READ_12                 0xa8
 517 #define WRITE_12                0xaa
 518 #define READ_ELEMENT_STATUS     0xb8
 519
 520 /*
 521  * Device Types
 522  */
 523 #define T_DIRECT        0x00
 524 #define T_SEQUENTIAL    0x01
 525 #define T_PRINTER       0x02
 526 #define T_PROCESSOR     0x03
 527 #define T_WORM          0x04
 528 #define T_CDROM         0x05
 529 #define T_SCANNER       0x06
 530 #define T_OPTICAL       0x07
 531 #define T_CHANGER       0x08
 532 #define T_COMM          0x09
 533 #define T_ASC0          0x0a
 534 #define T_ASC1          0x0b
 535 #define T_STORARRAY     0x0c
 536 #define T_ENCLOSURE     0x0d
 537 #define T_RBC           0x0e
 538 #define T_OCRW          0x0f
 539 #define T_NODEVICE      0x1F
 540 #define T_ANY           0xFF    /* Used in Quirk table matches */
 541
 542 #define T_REMOV         1
 543 #define T_FIXED         0
 544
 545 /*
 546  * This length is the initial inquiry length used by the probe code, as
 547  * well as the legnth necessary for scsi_print_inquiry() to function
 548  * correctly.  If either use requires a different length in the future,
 549  * the two values should be de-coupled.
 550  */
 551 #define SHORT_INQUIRY_LENGTH    36
 552
 553 struct scsi_inquiry_data
 554 {
 555         u_int8_t device;
 556 #define SID_TYPE(inq_data) ((inq_data)->device & 0x1f)
 557 #define SID_QUAL(inq_data) (((inq_data)->device & 0xE0) >> 5)
 558 #define SID_QUAL_LU_CONNECTED   0x00    /*
 559                                          * The specified peripheral device
 560                                          * type is currently connected to
 561                                          * logical unit.  If the target cannot
 562                                          * determine whether or not a physical
 563                                          * device is currently connected, it
 564                                          * shall also use this peripheral
 565                                          * qualifier when returning the INQUIRY
 566                                          * data.  This peripheral qualifier
 567                                          * does not mean that the device is
 568                                          * ready for access by the initiator.
 569                                          */
 570 #define SID_QUAL_LU_OFFLINE     0x01    /*
 571                                          * The target is capable of supporting
 572                                          * the specified peripheral device type
 573                                          * on this logical unit; however, the
 574                                          * physical device is not currently
 575                                          * connected to this logical unit.
 576                                          */
 577 #define SID_QUAL_RSVD           0x02
 578 #define SID_QUAL_BAD_LU         0x03    /*
 579                                          * The target is not capable of
 580                                          * supporting a physical device on
 581                                          * this logical unit. For this
 582                                          * peripheral qualifier the peripheral
 583                                          * device type shall be set to 1Fh to
 584                                          * provide compatibility with previous
 585                                          * versions of SCSI. All other
 586                                          * peripheral device type values are
 587                                          * reserved for this peripheral
 588                                          * qualifier.
 589                                          */
 590 #define SID_QUAL_IS_VENDOR_UNIQUE(inq_data) ((SID_QUAL(inq_data) & 0x08) != 0)
 591         u_int8_t dev_qual2;
 592 #define SID_QUAL2       0x7F
 593 #define SID_IS_REMOVABLE(inq_data) (((inq_data)->dev_qual2 & 0x80) != 0)
 594         u_int8_t version;
 595 #define SID_ANSI_REV(inq_data) ((inq_data)->version & 0x07)
 596 #define         SCSI_REV_0              0
 597 #define         SCSI_REV_CCS            1
 598 #define         SCSI_REV_2              2
 599 #define         SCSI_REV_SPC            3
 600 #define         SCSI_REV_SPC2           4
 601
 602 #define SID_ECMA        0x38
 603 #define SID_ISO         0xC0
 604         u_int8_t response_format;
 605 #define SID_AENC        0x80
 606 #define SID_TrmIOP      0x40
 607         u_int8_t additional_length;
 608         u_int8_t reserved;
 609         u_int8_t spc2_flags;
 610 #define SPC2_SID_MChngr         0x08
 611 #define SPC2_SID_MultiP         0x10
 612 #define SPC2_SID_EncServ        0x40
 613 #define SPC2_SID_BQueue         0x80
 614
 615 #define INQ_DATA_TQ_ENABLED(iqd)                                \
 616     ((SID_ANSI_REV(iqd) < SCSI_REV_SPC2)? ((iqd)->flags & SID_CmdQue) : \
 617     (((iqd)->flags & SID_CmdQue) && !((iqd)->spc2_flags & SPC2_SID_BQueue)) || \
 618     (!((iqd)->flags & SID_CmdQue) && ((iqd)->spc2_flags & SPC2_SID_BQueue)))
 619
 620
 621         u_int8_t flags;
 622 #define SID_SftRe       0x01
 623 #define SID_CmdQue      0x02
 624 #define SID_Linked      0x08
 625 #define SID_Sync        0x10
 626 #define SID_WBus16      0x20
 627 #define SID_WBus32      0x40
 628 #define SID_RelAdr      0x80
 629 #define SID_VENDOR_SIZE   8
 630         char     vendor[SID_VENDOR_SIZE];
 631 #define SID_PRODUCT_SIZE  16
 632         char     product[SID_PRODUCT_SIZE];
 633 #define SID_REVISION_SIZE 4
 634         char     revision[SID_REVISION_SIZE];
 635         /*
 636          * The following fields were taken from SCSI Primary Commands - 2
 637          * (SPC-2) Revision 14, Dated 11 November 1999
 638          */
 639 #define SID_VENDOR_SPECIFIC_0_SIZE      20
 640         u_int8_t vendor_specific0[SID_VENDOR_SPECIFIC_0_SIZE];
 641         /*
 642          * An extension of SCSI Parallel Specific Values
 643          */
 644 #define SID_SPI_IUS             0x01
 645 #define SID_SPI_QAS             0x02
 646 #define SID_SPI_CLOCK_ST        0x00
 647 #define SID_SPI_CLOCK_DT        0x04
 648 #define SID_SPI_CLOCK_DT_ST     0x0C
 649 #define SID_SPI_MASK            0x0F
 650         u_int8_t spi3data;
 651         u_int8_t reserved2;
 652         /*
 653          * Version Descriptors, stored 2 byte values.
 654          */
 655         u_int8_t version1[2];
 656         u_int8_t version2[2];
 657         u_int8_t version3[2];
 658         u_int8_t version4[2];
 659         u_int8_t version5[2];
 660         u_int8_t version6[2];
 661         u_int8_t version7[2];
 662         u_int8_t version8[2];
 663
 664         u_int8_t reserved3[22];
 665
 666 #define SID_VENDOR_SPECIFIC_1_SIZE      160
 667         u_int8_t vendor_specific1[SID_VENDOR_SPECIFIC_1_SIZE];
 668 };
 669
 670 struct scsi_vpd_unit_serial_number
 671 {
 672         u_int8_t device;
 673         u_int8_t page_code;
 674 #define SVPD_UNIT_SERIAL_NUMBER 0x80
 675         u_int8_t reserved;
 676         u_int8_t length; /* serial number length */
 677 #define SVPD_SERIAL_NUM_SIZE 251
 678         u_int8_t serial_num[SVPD_SERIAL_NUM_SIZE];
 679 };
 680
 681 struct scsi_read_capacity
 682 {
 683         u_int8_t opcode;
 684         u_int8_t byte2;
 685         u_int8_t addr[4];
 686         u_int8_t unused[3];
 687         u_int8_t control;
 688 };
 689
 690 struct scsi_read_capacity_16
 691 {
 692         uint8_t opcode;
 693 #define        SRC16_SERVICE_ACTION    0x10
 694         uint8_t service_action;
 695         uint8_t addr[8];
 696         uint8_t alloc_len[4];
 697 #define        SRC16_PMI               0x01
 698 #define        SRC16_RELADR            0x02
 699         uint8_t reladr;
 700         uint8_t control;
 701 };
 702
 703 struct scsi_read_capacity_data
 704 {
 705         u_int8_t addr[4];
 706         u_int8_t length[4];
 707 };
 708
 709 struct scsi_read_capacity_data_long
 710 {
 711         uint8_t addr[8];
 712         uint8_t length[4];
 713 };
 714
 715 struct scsi_report_luns
 716 {
 717         u_int8_t opcode;
 718         u_int8_t byte2;
 719         u_int8_t unused[3];
 720         u_int8_t addr[4];
 721         u_int8_t control;
 722 };
 723
 724 struct scsi_report_luns_data {
 725         u_int8_t length[4];     /* length of LUN inventory, in bytes */
 726         u_int8_t reserved[4];   /* unused */
 727         /*
 728          * LUN inventory- we only support the type zero form for now.
 729          */
 730         struct {
 731                 u_int8_t lundata[8];
 732         } luns[1];
 733 };
 734 #define RPL_LUNDATA_ATYP_MASK   0xc0    /* MBZ for type 0 lun */
 735 #define RPL_LUNDATA_T0LUN       1       /* @ lundata[1] */
 736
 737
 738 struct scsi_sense_data
 739 {
 740         u_int8_t error_code;
 741 #define SSD_ERRCODE                     0x7F
 742 #define         SSD_CURRENT_ERROR       0x70
 743 #define         SSD_DEFERRED_ERROR      0x71
 744 #define SSD_ERRCODE_VALID       0x80
 745         u_int8_t segment;
 746         u_int8_t flags;
 747 #define SSD_KEY                         0x0F
 748 #define         SSD_KEY_NO_SENSE        0x00
 749 #define         SSD_KEY_RECOVERED_ERROR 0x01
 750 #define         SSD_KEY_NOT_READY       0x02
 751 #define         SSD_KEY_MEDIUM_ERROR    0x03
 752 #define         SSD_KEY_HARDWARE_ERROR  0x04
 753 #define         SSD_KEY_ILLEGAL_REQUEST 0x05
 754 #define         SSD_KEY_UNIT_ATTENTION  0x06
 755 #define         SSD_KEY_DATA_PROTECT    0x07
 756 #define         SSD_KEY_BLANK_CHECK     0x08
 757 #define         SSD_KEY_Vendor_Specific 0x09
 758 #define         SSD_KEY_COPY_ABORTED    0x0a
 759 #define         SSD_KEY_ABORTED_COMMAND 0x0b
 760 #define         SSD_KEY_EQUAL           0x0c
 761 #define         SSD_KEY_VOLUME_OVERFLOW 0x0d
 762 #define         SSD_KEY_MISCOMPARE      0x0e
 763 #define         SSD_KEY_RESERVED        0x0f
 764 #define SSD_ILI         0x20
 765 #define SSD_EOM         0x40
 766 #define SSD_FILEMARK    0x80
 767         u_int8_t info[4];
 768         u_int8_t extra_len;
 769         u_int8_t cmd_spec_info[4];
 770         u_int8_t add_sense_code;
 771         u_int8_t add_sense_code_qual;
 772         u_int8_t fru;
 773         u_int8_t sense_key_spec[3];
 774 #define SSD_SCS_VALID           0x80
 775 #define SSD_FIELDPTR_CMD        0x40
 776 #define SSD_BITPTR_VALID        0x08
 777 #define SSD_BITPTR_VALUE        0x07
 778 #define SSD_MIN_SIZE 18
 779         u_int8_t extra_bytes[14];
 780 #define SSD_FULL_SIZE sizeof(struct scsi_sense_data)
 781 };
 782
 783 struct scsi_mode_header_6
 784 {
 785         u_int8_t data_length;   /* Sense data length */
 786         u_int8_t medium_type;
 787         u_int8_t dev_spec;
 788         u_int8_t blk_desc_len;
 789 };
 790
 791 struct scsi_mode_header_10
 792 {
 793         u_int8_t data_length[2];/* Sense data length */
 794         u_int8_t medium_type;
 795         u_int8_t dev_spec;
 796         u_int8_t unused[2];
 797         u_int8_t blk_desc_len[2];
 798 };
 799
 800 struct scsi_mode_page_header
 801 {
 802         u_int8_t page_code;
 803         u_int8_t page_length;
 804 };
 805
 806 struct scsi_mode_blk_desc
 807 {
 808         u_int8_t density;
 809         u_int8_t nblocks[3];
 810         u_int8_t reserved;
 811         u_int8_t blklen[3];
 812 };
 813
 814 #define SCSI_DEFAULT_DENSITY    0x00    /* use 'default' density */
 815 #define SCSI_SAME_DENSITY       0x7f    /* use 'same' density- >= SCSI-2 only */
 816
 817
 818 /*
 819  * Status Byte
 820  */
 821 #define SCSI_STATUS_OK                  0x00
 822 #define SCSI_STATUS_CHECK_COND          0x02
 823 #define SCSI_STATUS_COND_MET            0x04
 824 #define SCSI_STATUS_BUSY                0x08
 825 #define SCSI_STATUS_INTERMED            0x10
 826 #define SCSI_STATUS_INTERMED_COND_MET   0x14
 827 #define SCSI_STATUS_RESERV_CONFLICT     0x18
 828 #define SCSI_STATUS_CMD_TERMINATED      0x22    /* Obsolete in SAM-2 */
 829 #define SCSI_STATUS_QUEUE_FULL          0x28
 830 #define SCSI_STATUS_ACA_ACTIVE          0x30
 831 #define SCSI_STATUS_TASK_ABORTED        0x40
 832
 833 struct scsi_inquiry_pattern {
 834         u_int8_t   type;
 835         u_int8_t   media_type;
 836 #define SIP_MEDIA_REMOVABLE     0x01
 837 #define SIP_MEDIA_FIXED         0x02
 838         const char *vendor;
 839         const char *product;
 840         const char *revision;
 841 };
 842
 843 struct scsi_static_inquiry_pattern {
 844         u_int8_t   type;
 845         u_int8_t   media_type;
 846         char       vendor[SID_VENDOR_SIZE+1];
 847         char       product[SID_PRODUCT_SIZE+1];
 848         char       revision[SID_REVISION_SIZE+1];
 849 };
 850
 851 struct scsi_sense_quirk_entry {
 852         struct scsi_inquiry_pattern     inq_pat;
 853         int                             num_sense_keys;
 854         int                             num_ascs;
 855         struct sense_key_table_entry    *sense_key_info;
 856         struct asc_table_entry          *asc_info;
 857 };
 858
 859 struct sense_key_table_entry {
 860         u_int8_t    sense_key;
 861         u_int32_t   action;
 862         const char *desc;
 863 };
 864
 865 struct asc_table_entry {
 866         u_int8_t    asc;
 867         u_int8_t    ascq;
 868         u_int32_t   action;
 869         const char *desc;
 870 };
 871
 872 struct op_table_entry {
 873         u_int8_t    opcode;
 874         u_int16_t   opmask;
 875         const char  *desc;
 876 };
 877
 878 struct scsi_op_quirk_entry {
 879         struct scsi_inquiry_pattern     inq_pat;
 880         int                             num_ops;
 881         struct op_table_entry           *op_table;
 882 };
 883
 884 typedef enum {
 885         SSS_FLAG_NONE           = 0x00,
 886         SSS_FLAG_PRINT_COMMAND  = 0x01
 887 } scsi_sense_string_flags;
 888
 889 struct ccb_scsiio;
 890 struct cam_periph;
 891 union  ccb;
 892 #ifndef _KERNEL
 893 struct cam_device;
 894 #endif
 895
 896 extern const char *scsi_sense_key_text[];
 897
 898 struct sbuf;
 899
 900 __BEGIN_DECLS
 901 void scsi_sense_desc(int sense_key, int asc, int ascq,
 902                      struct scsi_inquiry_data *inq_data,
 903                      const char **sense_key_desc, const char **asc_desc);
 904 scsi_sense_action scsi_error_action(struct ccb_scsiio* csio,
 905                                     struct scsi_inquiry_data *inq_data,
 906                                     u_int32_t sense_flags);
 907 const char *    scsi_status_string(struct ccb_scsiio *csio);
 908 #ifdef _KERNEL
 909 int             scsi_command_string(struct ccb_scsiio *csio, struct sbuf *sb);
 910 int             scsi_sense_sbuf(struct ccb_scsiio *csio, struct sbuf *sb,
 911                                 scsi_sense_string_flags flags);
 912 char *          scsi_sense_string(struct ccb_scsiio *csio,
 913                                   char *str, int str_len);
 914 void            scsi_sense_print(struct ccb_scsiio *csio);
 915 int             scsi_interpret_sense(union ccb *ccb,
 916                                      u_int32_t sense_flags,
 917                                      u_int32_t *relsim_flags,
 918                                      u_int32_t *reduction,
 919                                      u_int32_t *timeout,
 920                                      scsi_sense_action error_action);
 921 #else
 922 int             scsi_command_string(struct cam_device *device,
 923                                     struct ccb_scsiio *csio, struct sbuf *sb);
 924 int             scsi_sense_sbuf(struct cam_device *device,
 925                                 struct ccb_scsiio *csio, struct sbuf *sb,
 926                                 scsi_sense_string_flags flags);
 927 char *          scsi_sense_string(struct cam_device *device,
 928                                   struct ccb_scsiio *csio,
 929                                   char *str, int str_len);
 930 void            scsi_sense_print(struct cam_device *device,
 931                                  struct ccb_scsiio *csio, FILE *ofile);
 932 int             scsi_interpret_sense(struct cam_device *device,
 933                                      union ccb *ccb,
 934                                      u_int32_t sense_flags,
 935                                      u_int32_t *relsim_flags,
 936                                      u_int32_t *reduction,
 937                                      u_int32_t *timeout,
 938                                      scsi_sense_action error_action);
 939 #endif /* _KERNEL */
 940
 941 #define SF_RETRY_UA     0x01
 942 #define SF_NO_PRINT     0x02
 943 #define SF_QUIET_IR     0x04    /* Be quiet about Illegal Request reponses */
 944 #define SF_PRINT_ALWAYS 0x08
 945
 946
 947 const char *    scsi_op_desc(u_int16_t opcode,
 948                              struct scsi_inquiry_data *inq_data);
 949 char *          scsi_cdb_string(u_int8_t *cdb_ptr, char *cdb_string,
 950                                 size_t len);
 951
 952 void            scsi_print_inquiry(struct scsi_inquiry_data *inq_data);
 953
 954 u_int           scsi_calc_syncsrate(u_int period_factor);
 955 u_int           scsi_calc_syncparam(u_int period);
 956
 957 void            scsi_test_unit_ready(struct ccb_scsiio *csio, u_int32_t retries,
 958                                      void (*cbfcnp)(struct cam_periph *,
 959                                                     union ccb *),
 960                                      u_int8_t tag_action,
 961                                      u_int8_t sense_len, u_int32_t timeout);
 962
 963 void            scsi_request_sense(struct ccb_scsiio *csio, u_int32_t retries,
 964                                    void (*cbfcnp)(struct cam_periph *,
 965                                                   union ccb *),
 966                                    void *data_ptr, u_int8_t dxfer_len,
 967                                    u_int8_t tag_action, u_int8_t sense_len,
 968                                    u_int32_t timeout);
 969
 970 void            scsi_inquiry(struct ccb_scsiio *csio, u_int32_t retries,
 971                              void (*cbfcnp)(struct cam_periph *, union ccb *),
 972                              u_int8_t tag_action, u_int8_t *inq_buf,
 973                              u_int32_t inq_len, int evpd, u_int8_t page_code,
 974                              u_int8_t sense_len, u_int32_t timeout);
 975
 976 void            scsi_mode_sense(struct ccb_scsiio *csio, u_int32_t retries,
 977                                 void (*cbfcnp)(struct cam_periph *,
 978                                                union ccb *),
 979                                 u_int8_t tag_action, int dbd,
 980                                 u_int8_t page_code, u_int8_t page,
 981                                 u_int8_t *param_buf, u_int32_t param_len,
 982                                 u_int8_t sense_len, u_int32_t timeout);
 983 void            scsi_mode_sense_len(struct ccb_scsiio *csio, u_int32_t retries,
 984                                 void (*cbfcnp)(struct cam_periph *,
 985                                                 union ccb *),
 986                                 u_int8_t tag_action, int dbd,
 987                                 u_int8_t page_code, u_int8_t page,
 988                                 u_int8_t *param_buf, u_int32_t param_len,
 989                                 int minimum_cmd_size, u_int8_t sense_len,
 990                                 u_int32_t timeout);
 991
 992 void            scsi_mode_select(struct ccb_scsiio *csio, u_int32_t retries,
 993                                  void (*cbfcnp)(struct cam_periph *,
 994                                                 union ccb *),
 995                                  u_int8_t tag_action, int scsi_page_fmt,
 996                                  int save_pages, u_int8_t *param_buf,
 997                                  u_int32_t param_len, u_int8_t sense_len,
 998                                  u_int32_t timeout);
 999
1000 void            scsi_mode_select_len(struct ccb_scsiio *csio, u_int32_t retries,
1001                                 void (*cbfcnp)(struct cam_periph *,
1002                                                 union ccb *),
1003                                 u_int8_t tag_action, int scsi_page_fmt,
1004                                 int save_pages, u_int8_t *param_buf,
1005                                 u_int32_t param_len, int minimum_cmd_size,
1006                                 u_int8_t sense_len, u_int32_t timeout);
1007
1008 void            scsi_log_sense(struct ccb_scsiio *csio, u_int32_t retries,
1009                                void (*cbfcnp)(struct cam_periph *, union ccb *),
1010                                u_int8_t tag_action, u_int8_t page_code,
1011                                u_int8_t page, int save_pages, int ppc,
1012                                u_int32_t paramptr, u_int8_t *param_buf,
1013                                u_int32_t param_len, u_int8_t sense_len,
1014                                u_int32_t timeout);
1015
1016 void            scsi_log_select(struct ccb_scsiio *csio, u_int32_t retries,
1017                                 void (*cbfcnp)(struct cam_periph *,
1018                                 union ccb *), u_int8_t tag_action,
1019                                 u_int8_t page_code, int save_pages,
1020                                 int pc_reset, u_int8_t *param_buf,
1021                                 u_int32_t param_len, u_int8_t sense_len,
1022                                 u_int32_t timeout);
1023
1024 void            scsi_prevent(struct ccb_scsiio *csio, u_int32_t retries,
1025                              void (*cbfcnp)(struct cam_periph *, union ccb *),
1026                              u_int8_t tag_action, u_int8_t action,
1027                              u_int8_t sense_len, u_int32_t timeout);
1028
1029 void            scsi_read_capacity(struct ccb_scsiio *csio, u_int32_t retries,
1030                                    void (*cbfcnp)(struct cam_periph *,
1031                                    union ccb *), u_int8_t tag_action,
1032                                    struct scsi_read_capacity_data *,
1033                                    u_int8_t sense_len, u_int32_t timeout);
1034 void            scsi_read_capacity_16(struct ccb_scsiio *csio, uint32_t retries,
1035                                     void (*cbfcnp)(struct cam_periph *,
1036                                     union ccb *), uint8_t tag_action,
1037                                     uint64_t lba, int reladr, int pmi,
1038                                     struct scsi_read_capacity_data_long
1039                                     *rcap_buf, uint8_t sense_len,
1040                                     uint32_t timeout);
1041
1042 void            scsi_report_luns(struct ccb_scsiio *csio, u_int32_t retries,
1043                                    void (*cbfcnp)(struct cam_periph *,
1044                                    union ccb *), u_int8_t tag_action,
1045                                    struct scsi_report_luns_data *,
1046                                    u_int32_t alloc_len, u_int8_t sense_len,
1047                                    u_int32_t timeout);
1048
1049 void            scsi_synchronize_cache(struct ccb_scsiio *csio,
1050                                        u_int32_t retries,
1051                                        void (*cbfcnp)(struct cam_periph *,
1052                                        union ccb *), u_int8_t tag_action,
1053                                        u_int32_t begin_lba, u_int16_t lb_count,
1054                                        u_int8_t sense_len, u_int32_t timeout);
1055
1056 void scsi_read_write(struct ccb_scsiio *csio, u_int32_t retries,
1057                      void (*cbfcnp)(struct cam_periph *, union ccb *),
1058                      u_int8_t tag_action, int readop, u_int8_t byte2,
1059                      int minimum_cmd_size, u_int64_t lba,
1060                      u_int32_t block_count, u_int8_t *data_ptr,
1061                      u_int32_t dxfer_len, u_int8_t sense_len,
1062                      u_int32_t timeout);
1063
1064 void scsi_start_stop(struct ccb_scsiio *csio, u_int32_t retries,
1065                      void (*cbfcnp)(struct cam_periph *, union ccb *),
1066                      u_int8_t tag_action, int start, int load_eject,
1067                      int immediate, u_int8_t sense_len, u_int32_t timeout);
1068
1069 int             scsi_inquiry_match(caddr_t inqbuffer, caddr_t table_entry);
1070 int             scsi_static_inquiry_match(caddr_t inqbuffer,
1071                                           caddr_t table_entry);
1072
1073 static __inline void scsi_extract_sense(struct scsi_sense_data *sense,
1074                                         int *error_code, int *sense_key,
1075                                         int *asc, int *ascq);
1076 static __inline void scsi_ulto2b(u_int32_t val, u_int8_t *bytes);
1077 static __inline void scsi_ulto3b(u_int32_t val, u_int8_t *bytes);
1078 static __inline void scsi_ulto4b(u_int32_t val, u_int8_t *bytes);
1079 static __inline void scsi_u64to8b(u_int64_t val, u_int8_t *bytes);
1080 static __inline u_int32_t scsi_2btoul(u_int8_t *bytes);
1081 static __inline u_int32_t scsi_3btoul(u_int8_t *bytes);
1082 static __inline int32_t scsi_3btol(u_int8_t *bytes);
1083 static __inline u_int32_t scsi_4btoul(u_int8_t *bytes);
1084 static __inline u_int64_t scsi_8btou64(u_int8_t *bytes);
1085 static __inline void *find_mode_page_6(struct scsi_mode_header_6 *mode_header);
1086 static __inline void *find_mode_page_10(struct scsi_mode_header_10 *mode_header);
1087
1088 static __inline void
1089 scsi_extract_sense(struct scsi_sense_data *sense, int *error_code,
1090                    int *sense_key, int *asc, int *ascq)
1091 {
1092         *error_code = sense->error_code & SSD_ERRCODE;
1093         *sense_key = sense->flags & SSD_KEY;
1094         *asc = (sense->extra_len >= 5) ? sense->add_sense_code : 0;
1095         *ascq = (sense->extra_len >= 6) ? sense->add_sense_code_qual : 0;
1096 }
1097
1098 static __inline void
1099 scsi_ulto2b(u_int32_t val, u_int8_t *bytes)
1100 {
1101
1102         bytes[0] = (val >> 8) & 0xff;
1103         bytes[1] = val & 0xff;
1104 }
1105
1106 static __inline void
1107 scsi_ulto3b(u_int32_t val, u_int8_t *bytes)
1108 {
1109
1110         bytes[0] = (val >> 16) & 0xff;
1111         bytes[1] = (val >> 8) & 0xff;
1112         bytes[2] = val & 0xff;
1113 }
1114
1115 static __inline void
1116 scsi_ulto4b(u_int32_t val, u_int8_t *bytes)
1117 {
1118
1119         bytes[0] = (val >> 24) & 0xff;
1120         bytes[1] = (val >> 16) & 0xff;
1121         bytes[2] = (val >> 8) & 0xff;
1122         bytes[3] = val & 0xff;
1123 }
1124
1125 static __inline void
1126 scsi_u64to8b(u_int64_t val, u_int8_t *bytes)
1127 {
1128         bytes[0] = (val >> 56) & 0xff;
1129         bytes[1] = (val >> 48) & 0xff;
1130         bytes[2] = (val >> 40) & 0xff;
1131         bytes[3] = (val >> 32) & 0xff;
1132         bytes[4] = (val >> 24) & 0xff;
1133         bytes[5] = (val >> 16) & 0xff;
1134         bytes[6] = (val >> 8) & 0xff;
1135         bytes[7] = val & 0xff;
1136 }
1137
1138 static __inline u_int32_t
1139 scsi_2btoul(u_int8_t *bytes)
1140 {
1141         u_int32_t rv;
1142
1143         rv = (bytes[0] << 8) |
1144              bytes[1];
1145         return (rv);
1146 }
1147
1148 static __inline uint64_t
1149 scsi_8btou64(uint8_t *bytes)
1150 {
1151         uint64_t rv;
1152
1153         rv = (((uint64_t)bytes[0]) << 56) |
1154              (((uint64_t)bytes[1]) << 48) |
1155              (((uint64_t)bytes[2]) << 40) |
1156              (((uint64_t)bytes[3]) << 32) |
1157              (((uint64_t)bytes[4]) << 24) |
1158              (((uint64_t)bytes[5]) << 16) |
1159              (((uint64_t)bytes[6]) << 8) |
1160              bytes[7];
1161         return (rv);
1162 }
1163
1164 static __inline u_int32_t
1165 scsi_3btoul(u_int8_t *bytes)
1166 {
1167         u_int32_t rv;
1168
1169         rv = (bytes[0] << 16) |
1170              (bytes[1] << 8) |
1171              bytes[2];
1172         return (rv);
1173 }
1174
1175 static __inline int32_t
1176 scsi_3btol(u_int8_t *bytes)
1177 {
1178         u_int32_t rc = scsi_3btoul(bytes);
1179
1180         if (rc & 0x00800000)
1181                 rc |= 0xff000000;
1182
1183         return (int32_t) rc;
1184 }
1185
1186 static __inline u_int32_t
1187 scsi_4btoul(u_int8_t *bytes)
1188 {
1189         u_int32_t rv;
1190
1191         rv = (bytes[0] << 24) |
1192              (bytes[1] << 16) |
1193              (bytes[2] << 8) |
1194              bytes[3];
1195         return (rv);
1196 }
1197
1198 /*
1199  * Given the pointer to a returned mode sense buffer, return a pointer to
1200  * the start of the first mode page.
1201  */
1202 static __inline void *
1203 find_mode_page_6(struct scsi_mode_header_6 *mode_header)
1204 {
1205         void *page_start;
1206
1207         page_start = (void *)((u_int8_t *)&mode_header[1] +
1208                               mode_header->blk_desc_len);
1209
1210         return(page_start);
1211 }
1212
1213 static __inline void *
1214 find_mode_page_10(struct scsi_mode_header_10 *mode_header)
1215 {
1216         void *page_start;
1217
1218         page_start = (void *)((u_int8_t *)&mode_header[1] +
1219                                scsi_2btoul(mode_header->blk_desc_len));
1220
1221         return(page_start);
1222 }
1223
1224 __END_DECLS
1225
1226 #endif /*_SCSI_SCSI_ALL_H*/