include/scsi/scsi_proto.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This header file contains public constants and structures used by
   4  * both the SCSI initiator and the SCSI target code.
   5  *
   6  * For documentation on the OPCODES, MESSAGES, and SENSE values,
   7  * please consult the SCSI standard.
   8  */
   9
  10 #ifndef _SCSI_PROTO_H_
  11 #define _SCSI_PROTO_H_
  12
  13 #include <linux/build_bug.h>
  14 #include <linux/types.h>
  15
  16 /*
  17  *      SCSI opcodes
  18  */
  19
  20 #define TEST_UNIT_READY       0x00
  21 #define REZERO_UNIT           0x01
  22 #define REQUEST_SENSE         0x03
  23 #define FORMAT_UNIT           0x04
  24 #define READ_BLOCK_LIMITS     0x05
  25 #define REASSIGN_BLOCKS       0x07
  26 #define INITIALIZE_ELEMENT_STATUS 0x07
  27 #define READ_6                0x08
  28 #define WRITE_6               0x0a
  29 #define SEEK_6                0x0b
  30 #define READ_REVERSE          0x0f
  31 #define WRITE_FILEMARKS       0x10
  32 #define SPACE                 0x11
  33 #define INQUIRY               0x12
  34 #define RECOVER_BUFFERED_DATA 0x14
  35 #define MODE_SELECT           0x15
  36 #define RESERVE               0x16
  37 #define RELEASE               0x17
  38 #define COPY                  0x18
  39 #define ERASE                 0x19
  40 #define MODE_SENSE            0x1a
  41 #define START_STOP            0x1b
  42 #define RECEIVE_DIAGNOSTIC    0x1c
  43 #define SEND_DIAGNOSTIC       0x1d
  44 #define ALLOW_MEDIUM_REMOVAL  0x1e
  45
  46 #define READ_FORMAT_CAPACITIES 0x23
  47 #define SET_WINDOW            0x24
  48 #define READ_CAPACITY         0x25
  49 #define READ_10               0x28
  50 #define WRITE_10              0x2a
  51 #define SEEK_10               0x2b
  52 #define POSITION_TO_ELEMENT   0x2b
  53 #define WRITE_VERIFY          0x2e
  54 #define VERIFY                0x2f
  55 #define SEARCH_HIGH           0x30
  56 #define SEARCH_EQUAL          0x31
  57 #define SEARCH_LOW            0x32
  58 #define SET_LIMITS            0x33
  59 #define PRE_FETCH             0x34
  60 #define READ_POSITION         0x34
  61 #define SYNCHRONIZE_CACHE     0x35
  62 #define LOCK_UNLOCK_CACHE     0x36
  63 #define READ_DEFECT_DATA      0x37
  64 #define MEDIUM_SCAN           0x38
  65 #define COMPARE               0x39
  66 #define COPY_VERIFY           0x3a
  67 #define WRITE_BUFFER          0x3b
  68 #define READ_BUFFER           0x3c
  69 #define UPDATE_BLOCK          0x3d
  70 #define READ_LONG             0x3e
  71 #define WRITE_LONG            0x3f
  72 #define CHANGE_DEFINITION     0x40
  73 #define WRITE_SAME            0x41
  74 #define UNMAP                 0x42
  75 #define READ_TOC              0x43
  76 #define READ_HEADER           0x44
  77 #define GET_EVENT_STATUS_NOTIFICATION 0x4a
  78 #define LOG_SELECT            0x4c
  79 #define LOG_SENSE             0x4d
  80 #define XDWRITEREAD_10        0x53
  81 #define MODE_SELECT_10        0x55
  82 #define RESERVE_10            0x56
  83 #define RELEASE_10            0x57
  84 #define MODE_SENSE_10         0x5a
  85 #define PERSISTENT_RESERVE_IN 0x5e
  86 #define PERSISTENT_RESERVE_OUT 0x5f
  87 #define VARIABLE_LENGTH_CMD   0x7f
  88 #define REPORT_LUNS           0xa0
  89 #define SECURITY_PROTOCOL_IN  0xa2
  90 #define MAINTENANCE_IN        0xa3
  91 #define MAINTENANCE_OUT       0xa4
  92 #define MOVE_MEDIUM           0xa5
  93 #define EXCHANGE_MEDIUM       0xa6
  94 #define READ_12               0xa8
  95 #define SERVICE_ACTION_OUT_12 0xa9
  96 #define WRITE_12              0xaa
  97 #define READ_MEDIA_SERIAL_NUMBER 0xab /* Obsolete with SPC-2 */
  98 #define SERVICE_ACTION_IN_12  0xab
  99 #define WRITE_VERIFY_12       0xae
 100 #define VERIFY_12             0xaf
 101 #define SEARCH_HIGH_12        0xb0
 102 #define SEARCH_EQUAL_12       0xb1
 103 #define SEARCH_LOW_12         0xb2
 104 #define SECURITY_PROTOCOL_OUT 0xb5
 105 #define READ_ELEMENT_STATUS   0xb8
 106 #define SEND_VOLUME_TAG       0xb6
 107 #define WRITE_LONG_2          0xea
 108 #define EXTENDED_COPY         0x83
 109 #define RECEIVE_COPY_RESULTS  0x84
 110 #define ACCESS_CONTROL_IN     0x86
 111 #define ACCESS_CONTROL_OUT    0x87
 112 #define READ_16               0x88
 113 #define COMPARE_AND_WRITE     0x89
 114 #define WRITE_16              0x8a
 115 #define READ_ATTRIBUTE        0x8c
 116 #define WRITE_ATTRIBUTE       0x8d
 117 #define WRITE_VERIFY_16       0x8e
 118 #define VERIFY_16             0x8f
 119 #define SYNCHRONIZE_CACHE_16  0x91
 120 #define WRITE_SAME_16         0x93
 121 #define ZBC_OUT               0x94
 122 #define ZBC_IN                0x95
 123 #define WRITE_ATOMIC_16 0x9c
 124 #define SERVICE_ACTION_BIDIRECTIONAL 0x9d
 125 #define SERVICE_ACTION_IN_16  0x9e
 126 #define SERVICE_ACTION_OUT_16 0x9f
 127 /* values for service action in */
 128 #define SAI_READ_CAPACITY_16  0x10
 129 #define SAI_GET_LBA_STATUS    0x12
 130 #define SAI_REPORT_REFERRALS  0x13
 131 #define SAI_GET_STREAM_STATUS 0x16
 132 /* values for maintenance in */
 133 #define MI_REPORT_IDENTIFYING_INFORMATION 0x05
 134 #define MI_REPORT_TARGET_PGS  0x0a
 135 #define MI_REPORT_ALIASES     0x0b
 136 #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
 137 #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
 138 #define MI_REPORT_PRIORITY    0x0e
 139 #define MI_REPORT_TIMESTAMP   0x0f
 140 #define MI_MANAGEMENT_PROTOCOL_IN 0x10
 141 /* value for MI_REPORT_TARGET_PGS ext header */
 142 #define MI_EXT_HDR_PARAM_FMT  0x20
 143 /* values for maintenance out */
 144 #define MO_SET_IDENTIFYING_INFORMATION 0x06
 145 #define MO_SET_TARGET_PGS     0x0a
 146 #define MO_CHANGE_ALIASES     0x0b
 147 #define MO_SET_PRIORITY       0x0e
 148 #define MO_SET_TIMESTAMP      0x0f
 149 #define MO_MANAGEMENT_PROTOCOL_OUT 0x10
 150 /* values for ZBC_IN */
 151 #define ZI_REPORT_ZONES       0x00
 152 /* values for ZBC_OUT */
 153 #define ZO_CLOSE_ZONE         0x01
 154 #define ZO_FINISH_ZONE        0x02
 155 #define ZO_OPEN_ZONE          0x03
 156 #define ZO_RESET_WRITE_POINTER 0x04
 157 /* values for PR in service action */
 158 #define READ_KEYS             0x00
 159 #define READ_RESERVATION      0x01
 160 #define REPORT_CAPABILITES    0x02
 161 #define READ_FULL_STATUS      0x03
 162 /* values for variable length command */
 163 #define XDREAD_32             0x03
 164 #define XDWRITE_32            0x04
 165 #define XPWRITE_32            0x06
 166 #define XDWRITEREAD_32        0x07
 167 #define READ_32               0x09
 168 #define VERIFY_32             0x0a
 169 #define WRITE_32              0x0b
 170 #define WRITE_VERIFY_32       0x0c
 171 #define WRITE_SAME_32         0x0d
 172 #define ATA_32                0x1ff0
 173
 174 /* Values for T10/04-262r7 */
 175 #define ATA_16                0x85      /* 16-byte pass-thru */
 176 #define ATA_12                0xa1      /* 12-byte pass-thru */
 177
 178 /* Vendor specific CDBs start here */
 179 #define VENDOR_SPECIFIC_CDB 0xc0
 180
 181 /*
 182  *      SCSI command lengths
 183  */
 184
 185 #define SCSI_MAX_VARLEN_CDB_SIZE 260
 186
 187 /* defined in T10 SCSI Primary Commands-2 (SPC2) */
 188 struct scsi_varlen_cdb_hdr {
 189         __u8 opcode;        /* opcode always == VARIABLE_LENGTH_CMD */
 190         __u8 control;
 191         __u8 misc[5];
 192         __u8 additional_cdb_length;         /* total cdb length - 8 */
 193         __be16 service_action;
 194         /* service specific data follows */
 195 };
 196
 197 /*
 198  *  SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
 199  *  T10/1561-D Revision 4 Draft dated 7th November 2002.
 200  */
 201 enum sam_status {
 202         SAM_STAT_GOOD                           = 0x00,
 203         SAM_STAT_CHECK_CONDITION                = 0x02,
 204         SAM_STAT_CONDITION_MET                  = 0x04,
 205         SAM_STAT_BUSY                           = 0x08,
 206         SAM_STAT_INTERMEDIATE                   = 0x10,
 207         SAM_STAT_INTERMEDIATE_CONDITION_MET     = 0x14,
 208         SAM_STAT_RESERVATION_CONFLICT           = 0x18,
 209         SAM_STAT_COMMAND_TERMINATED             = 0x22, /* obsolete in SAM-3 */
 210         SAM_STAT_TASK_SET_FULL                  = 0x28,
 211         SAM_STAT_ACA_ACTIVE                     = 0x30,
 212         SAM_STAT_TASK_ABORTED                   = 0x40,
 213 };
 214
 215 #define STATUS_MASK         0xfe
 216
 217 /*
 218  *  SENSE KEYS
 219  */
 220 #define NO_SENSE            0x00
 221 #define RECOVERED_ERROR     0x01
 222 #define NOT_READY           0x02
 223 #define MEDIUM_ERROR        0x03
 224 #define HARDWARE_ERROR      0x04
 225 #define ILLEGAL_REQUEST     0x05
 226 #define UNIT_ATTENTION      0x06
 227 #define DATA_PROTECT        0x07
 228 #define BLANK_CHECK         0x08
 229 #define VENDOR_SPECIFIC     0x09
 230 #define COPY_ABORTED        0x0a
 231 #define ABORTED_COMMAND     0x0b
 232 #define VOLUME_OVERFLOW     0x0d
 233 #define MISCOMPARE          0x0e
 234 #define COMPLETED           0x0f
 235
 236 /*
 237  *  DEVICE TYPES
 238  *  Please keep them in 0x%02x format for $MODALIAS to work
 239  */
 240
 241 #define TYPE_DISK           0x00
 242 #define TYPE_TAPE           0x01
 243 #define TYPE_PRINTER        0x02
 244 #define TYPE_PROCESSOR      0x03    /* HP scanners use this */
 245 #define TYPE_WORM           0x04    /* Treated as ROM by our system */
 246 #define TYPE_ROM            0x05
 247 #define TYPE_SCANNER        0x06
 248 #define TYPE_MOD            0x07    /* Magneto-optical disk -
 249                                      * - treated as TYPE_DISK */
 250 #define TYPE_MEDIUM_CHANGER 0x08
 251 #define TYPE_COMM           0x09    /* Communications device */
 252 #define TYPE_RAID           0x0c
 253 #define TYPE_ENCLOSURE      0x0d    /* Enclosure Services Device */
 254 #define TYPE_RBC            0x0e
 255 #define TYPE_OSD            0x11
 256 #define TYPE_ZBC            0x14
 257 #define TYPE_WLUN           0x1e    /* well-known logical unit */
 258 #define TYPE_NO_LUN         0x7f
 259
 260 /* SCSI protocols; these are taken from SPC-3 section 7.5 */
 261 enum scsi_protocol {
 262         SCSI_PROTOCOL_FCP = 0,  /* Fibre Channel */
 263         SCSI_PROTOCOL_SPI = 1,  /* parallel SCSI */
 264         SCSI_PROTOCOL_SSA = 2,  /* Serial Storage Architecture - Obsolete */
 265         SCSI_PROTOCOL_SBP = 3,  /* firewire */
 266         SCSI_PROTOCOL_SRP = 4,  /* Infiniband RDMA */
 267         SCSI_PROTOCOL_ISCSI = 5,
 268         SCSI_PROTOCOL_SAS = 6,
 269         SCSI_PROTOCOL_ADT = 7,  /* Media Changers */
 270         SCSI_PROTOCOL_ATA = 8,
 271         SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */
 272 };
 273
 274 /*
 275  * ScsiLun: 8 byte LUN.
 276  */
 277 struct scsi_lun {
 278         __u8 scsi_lun[8];
 279 };
 280
 281 /* SBC-5 IO advice hints group descriptor */
 282 struct scsi_io_group_descriptor {
 283 #if defined(__BIG_ENDIAN)
 284         u8 io_advice_hints_mode: 2;
 285         u8 reserved1: 3;
 286         u8 st_enble: 1;
 287         u8 cs_enble: 1;
 288         u8 ic_enable: 1;
 289 #elif defined(__LITTLE_ENDIAN)
 290         u8 ic_enable: 1;
 291         u8 cs_enble: 1;
 292         u8 st_enble: 1;
 293         u8 reserved1: 3;
 294         u8 io_advice_hints_mode: 2;
 295 #else
 296 #error
 297 #endif
 298         u8 reserved2[3];
 299         /* Logical block markup descriptor */
 300 #if defined(__BIG_ENDIAN)
 301         u8 acdlu: 1;
 302         u8 reserved3: 1;
 303         u8 rlbsr: 2;
 304         u8 lbm_descriptor_type: 4;
 305 #elif defined(__LITTLE_ENDIAN)
 306         u8 lbm_descriptor_type: 4;
 307         u8 rlbsr: 2;
 308         u8 reserved3: 1;
 309         u8 acdlu: 1;
 310 #else
 311 #error
 312 #endif
 313         u8 params[2];
 314         u8 reserved4;
 315         u8 reserved5[8];
 316 };
 317
 318 static_assert(sizeof(struct scsi_io_group_descriptor) == 16);
 319
 320 /* SCSI stream status descriptor */
 321 struct scsi_stream_status {
 322 #if defined(__BIG_ENDIAN)
 323         u8 perm: 1;
 324         u8 reserved1: 7;
 325 #elif defined(__LITTLE_ENDIAN)
 326         u8 reserved1: 7;
 327         u8 perm: 1;
 328 #else
 329 #error
 330 #endif
 331         u8 reserved2;
 332         __be16 stream_identifier;
 333 #if defined(__BIG_ENDIAN)
 334         u8 reserved3: 2;
 335         u8 rel_lifetime: 6;
 336 #elif defined(__LITTLE_ENDIAN)
 337         u8 rel_lifetime: 6;
 338         u8 reserved3: 2;
 339 #else
 340 #error
 341 #endif
 342         u8 reserved4[3];
 343 };
 344
 345 static_assert(sizeof(struct scsi_stream_status) == 8);
 346
 347 /* GET STREAM STATUS parameter data */
 348 struct scsi_stream_status_header {
 349         __be32 len;     /* length in bytes of stream_status[] array. */
 350         u16 reserved;
 351         __be16 number_of_open_streams;
 352         DECLARE_FLEX_ARRAY(struct scsi_stream_status, stream_status);
 353 };
 354
 355 static_assert(sizeof(struct scsi_stream_status_header) == 8);
 356
 357 /* SPC asymmetric access states */
 358 #define SCSI_ACCESS_STATE_OPTIMAL     0x00
 359 #define SCSI_ACCESS_STATE_ACTIVE      0x01
 360 #define SCSI_ACCESS_STATE_STANDBY     0x02
 361 #define SCSI_ACCESS_STATE_UNAVAILABLE 0x03
 362 #define SCSI_ACCESS_STATE_LBA         0x04
 363 #define SCSI_ACCESS_STATE_OFFLINE     0x0e
 364 #define SCSI_ACCESS_STATE_TRANSITIONING 0x0f
 365
 366 /* Values for REPORT TARGET GROUP STATES */
 367 #define SCSI_ACCESS_STATE_MASK        0x0f
 368 #define SCSI_ACCESS_STATE_PREFERRED   0x80
 369
 370 /* Reporting options for REPORT ZONES */
 371 enum zbc_zone_reporting_options {
 372         ZBC_ZONE_REPORTING_OPTION_ALL           = 0x00,
 373         ZBC_ZONE_REPORTING_OPTION_EMPTY         = 0x01,
 374         ZBC_ZONE_REPORTING_OPTION_IMPLICIT_OPEN = 0x02,
 375         ZBC_ZONE_REPORTING_OPTION_EXPLICIT_OPEN = 0x03,
 376         ZBC_ZONE_REPORTING_OPTION_CLOSED        = 0x04,
 377         ZBC_ZONE_REPORTING_OPTION_FULL          = 0x05,
 378         ZBC_ZONE_REPORTING_OPTION_READONLY      = 0x06,
 379         ZBC_ZONE_REPORTING_OPTION_OFFLINE       = 0x07,
 380         /* 0x08 to 0x0f are reserved */
 381         ZBC_ZONE_REPORTING_OPTION_NEED_RESET_WP = 0x10,
 382         ZBC_ZONE_REPORTING_OPTION_NON_SEQWRITE  = 0x11,
 383         /* 0x12 to 0x3e are reserved */
 384         ZBC_ZONE_REPORTING_OPTION_NON_WP        = 0x3f,
 385 };
 386
 387 #define ZBC_REPORT_ZONE_PARTIAL 0x80
 388
 389 /* Zone types of REPORT ZONES zone descriptors */
 390 enum zbc_zone_type {
 391         ZBC_ZONE_TYPE_CONV              = 0x1,
 392         ZBC_ZONE_TYPE_SEQWRITE_REQ      = 0x2,
 393         ZBC_ZONE_TYPE_SEQWRITE_PREF     = 0x3,
 394         ZBC_ZONE_TYPE_SEQ_OR_BEFORE_REQ = 0x4,
 395         ZBC_ZONE_TYPE_GAP               = 0x5,
 396         /* 0x6 to 0xf are reserved */
 397 };
 398
 399 /* Zone conditions of REPORT ZONES zone descriptors */
 400 enum zbc_zone_cond {
 401         ZBC_ZONE_COND_NO_WP             = 0x0,
 402         ZBC_ZONE_COND_EMPTY             = 0x1,
 403         ZBC_ZONE_COND_IMP_OPEN          = 0x2,
 404         ZBC_ZONE_COND_EXP_OPEN          = 0x3,
 405         ZBC_ZONE_COND_CLOSED            = 0x4,
 406         /* 0x5 to 0xc are reserved */
 407         ZBC_ZONE_COND_READONLY          = 0xd,
 408         ZBC_ZONE_COND_FULL              = 0xe,
 409         ZBC_ZONE_COND_OFFLINE           = 0xf,
 410 };
 411
 412 enum zbc_zone_alignment_method {
 413         ZBC_CONSTANT_ZONE_LENGTH        = 0x1,
 414         ZBC_CONSTANT_ZONE_START_OFFSET  = 0x8,
 415 };
 416
 417 /* Version descriptor values for INQUIRY */
 418 enum scsi_version_descriptor {
 419         SCSI_VERSION_DESCRIPTOR_FCP4    = 0x0a40,
 420         SCSI_VERSION_DESCRIPTOR_ISCSI   = 0x0960,
 421         SCSI_VERSION_DESCRIPTOR_SAM5    = 0x00a0,
 422         SCSI_VERSION_DESCRIPTOR_SAS3    = 0x0c60,
 423         SCSI_VERSION_DESCRIPTOR_SBC3    = 0x04c0,
 424         SCSI_VERSION_DESCRIPTOR_SBP3    = 0x0980,
 425         SCSI_VERSION_DESCRIPTOR_SPC4    = 0x0460,
 426         SCSI_VERSION_DESCRIPTOR_SRP     = 0x0940
 427 };
 428
 429 enum scsi_support_opcode {
 430         SCSI_SUPPORT_NO_INFO            = 0,
 431         SCSI_SUPPORT_NOT_SUPPORTED      = 1,
 432         SCSI_SUPPORT_FULL               = 3,
 433         SCSI_SUPPORT_VENDOR             = 5,
 434 };
 435
 436 #define SCSI_CONTROL_MASK 0
 437 #define SCSI_GROUP_NUMBER_MASK 0
 438
 439 #endif /* _SCSI_PROTO_H_ */