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 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * This header file contains public constants and structures used by
  * both the SCSI initiator and the SCSI target code.
  *
  * For documentation on the OPCODES, MESSAGES, and SENSE values,
  * please consult the SCSI standard.
  */
 
 #ifndef _SCSI_PROTO_H_
 #define _SCSI_PROTO_H_
 
 #include <linux/types.h>
 
 /*
  *      SCSI opcodes
  */
 
 #define TEST_UNIT_READY       0x00
 #define REZERO_UNIT           0x01
 #define REQUEST_SENSE         0x03
 #define FORMAT_UNIT           0x04
 #define READ_BLOCK_LIMITS     0x05
 #define REASSIGN_BLOCKS       0x07
 #define INITIALIZE_ELEMENT_STATUS 0x07
 #define READ_6                0x08
 #define WRITE_6               0x0a
 #define SEEK_6                0x0b
 #define READ_REVERSE          0x0f
 #define WRITE_FILEMARKS       0x10
 #define SPACE                 0x11
 #define INQUIRY               0x12
 #define RECOVER_BUFFERED_DATA 0x14
 #define MODE_SELECT           0x15
 #define RESERVE               0x16
 #define RELEASE               0x17
 #define COPY                  0x18
 #define ERASE                 0x19
 #define MODE_SENSE            0x1a
 #define START_STOP            0x1b
 #define RECEIVE_DIAGNOSTIC    0x1c
 #define SEND_DIAGNOSTIC       0x1d
 #define ALLOW_MEDIUM_REMOVAL  0x1e
 
 #define READ_FORMAT_CAPACITIES 0x23
 #define SET_WINDOW            0x24
 #define READ_CAPACITY         0x25
 #define READ_10               0x28
 #define WRITE_10              0x2a
 #define SEEK_10               0x2b
 #define POSITION_TO_ELEMENT   0x2b
 #define WRITE_VERIFY          0x2e
 #define VERIFY                0x2f
 #define SEARCH_HIGH           0x30
 #define SEARCH_EQUAL          0x31
 #define SEARCH_LOW            0x32
 #define SET_LIMITS            0x33
 #define PRE_FETCH             0x34
 #define READ_POSITION         0x34
 #define SYNCHRONIZE_CACHE     0x35
 #define LOCK_UNLOCK_CACHE     0x36
 #define READ_DEFECT_DATA      0x37
 #define MEDIUM_SCAN           0x38
 #define COMPARE               0x39
 #define COPY_VERIFY           0x3a
 #define WRITE_BUFFER          0x3b
 #define READ_BUFFER           0x3c
 #define UPDATE_BLOCK          0x3d
 #define READ_LONG             0x3e
 #define WRITE_LONG            0x3f
 #define CHANGE_DEFINITION     0x40
 #define WRITE_SAME            0x41
 #define UNMAP             0x42
 #define READ_TOC              0x43
 #define READ_HEADER           0x44
 #define GET_EVENT_STATUS_NOTIFICATION 0x4a
 #define LOG_SELECT            0x4c
 #define LOG_SENSE             0x4d
 #define XDWRITEREAD_10        0x53
 #define MODE_SELECT_10        0x55
 #define RESERVE_10            0x56
 #define RELEASE_10            0x57
 #define MODE_SENSE_10         0x5a
 #define PERSISTENT_RESERVE_IN 0x5e
 #define PERSISTENT_RESERVE_OUT 0x5f
 #define VARIABLE_LENGTH_CMD   0x7f
 #define REPORT_LUNS           0xa0
 #define SECURITY_PROTOCOL_IN  0xa2
 #define MAINTENANCE_IN        0xa3
 #define MAINTENANCE_OUT       0xa4
 #define MOVE_MEDIUM           0xa5
 #define EXCHANGE_MEDIUM       0xa6
 #define READ_12               0xa8
 #define SERVICE_ACTION_OUT_12 0xa9
 #define WRITE_12              0xaa
 #define READ_MEDIA_SERIAL_NUMBER 0xab /* Obsolete with SPC-2 */
 #define SERVICE_ACTION_IN_12  0xab
 #define WRITE_VERIFY_12       0xae
 #define VERIFY_12         0xaf
 #define SEARCH_HIGH_12        0xb0
 #define SEARCH_EQUAL_12       0xb1
 #define SEARCH_LOW_12         0xb2
 #define SECURITY_PROTOCOL_OUT 0xb5
 #define READ_ELEMENT_STATUS   0xb8
 #define SEND_VOLUME_TAG       0xb6
 #define WRITE_LONG_2          0xea
 #define EXTENDED_COPY         0x83
 #define RECEIVE_COPY_RESULTS  0x84
 #define ACCESS_CONTROL_IN     0x86
 #define ACCESS_CONTROL_OUT    0x87
 #define READ_16               0x88
 #define COMPARE_AND_WRITE     0x89
 #define WRITE_16              0x8a
 #define READ_ATTRIBUTE        0x8c
 #define WRITE_ATTRIBUTE       0x8d
 #define WRITE_VERIFY_16       0x8e
 #define VERIFY_16         0x8f
 #define SYNCHRONIZE_CACHE_16  0x91
 #define WRITE_SAME_16         0x93
 #define ZBC_OUT           0x94
 #define ZBC_IN            0x95
 #define SERVICE_ACTION_BIDIRECTIONAL 0x9d
 #define SERVICE_ACTION_IN_16  0x9e
 #define SERVICE_ACTION_OUT_16 0x9f
 /* values for service action in */
 #define SAI_READ_CAPACITY_16  0x10
 #define SAI_GET_LBA_STATUS    0x12
 #define SAI_REPORT_REFERRALS  0x13
 /* values for maintenance in */
 #define MI_REPORT_IDENTIFYING_INFORMATION 0x05
 #define MI_REPORT_TARGET_PGS  0x0a
 #define MI_REPORT_ALIASES     0x0b
 #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
 #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
 #define MI_REPORT_PRIORITY    0x0e
 #define MI_REPORT_TIMESTAMP   0x0f
 #define MI_MANAGEMENT_PROTOCOL_IN 0x10
 /* value for MI_REPORT_TARGET_PGS ext header */
 #define MI_EXT_HDR_PARAM_FMT  0x20
 /* values for maintenance out */
 #define MO_SET_IDENTIFYING_INFORMATION 0x06
 #define MO_SET_TARGET_PGS     0x0a
 #define MO_CHANGE_ALIASES     0x0b
 #define MO_SET_PRIORITY       0x0e
 #define MO_SET_TIMESTAMP      0x0f
 #define MO_MANAGEMENT_PROTOCOL_OUT 0x10
 /* values for ZBC_IN */
 #define ZI_REPORT_ZONES       0x00
 /* values for ZBC_OUT */
 #define ZO_CLOSE_ZONE         0x01
 #define ZO_FINISH_ZONE        0x02
 #define ZO_OPEN_ZONE          0x03
 #define ZO_RESET_WRITE_POINTER 0x04
 /* values for variable length command */
 #define XDREAD_32         0x03
 #define XDWRITE_32        0x04
 #define XPWRITE_32        0x06
 #define XDWRITEREAD_32        0x07
 #define READ_32           0x09
 #define VERIFY_32         0x0a
 #define WRITE_32          0x0b
 #define WRITE_VERIFY_32       0x0c
 #define WRITE_SAME_32         0x0d
 #define ATA_32            0x1ff0
 
 /* Values for T10/04-262r7 */
 #define ATA_16            0x85  /* 16-byte pass-thru */
 #define ATA_12            0xa1  /* 12-byte pass-thru */
 
 /* Vendor specific CDBs start here */
 #define VENDOR_SPECIFIC_CDB 0xc0
 
 /*
  *  SCSI command lengths
  */
 
 #define SCSI_MAX_VARLEN_CDB_SIZE 260
 
 /* defined in T10 SCSI Primary Commands-2 (SPC2) */
 struct scsi_varlen_cdb_hdr {
     __u8 opcode;        /* opcode always == VARIABLE_LENGTH_CMD */
     __u8 control;
     __u8 misc[5];
     __u8 additional_cdb_length;         /* total cdb length - 8 */
     __be16 service_action;
     /* service specific data follows */
 };
 
 /*
  *  SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
  *  T10/1561-D Revision 4 Draft dated 7th November 2002.
  */
 enum sam_status {
     SAM_STAT_GOOD               = 0x00,
     SAM_STAT_CHECK_CONDITION        = 0x02,
     SAM_STAT_CONDITION_MET          = 0x04,
     SAM_STAT_BUSY               = 0x08,
     SAM_STAT_INTERMEDIATE           = 0x10,
     SAM_STAT_INTERMEDIATE_CONDITION_MET = 0x14,
     SAM_STAT_RESERVATION_CONFLICT       = 0x18,
     SAM_STAT_COMMAND_TERMINATED     = 0x22, /* obsolete in SAM-3 */
     SAM_STAT_TASK_SET_FULL          = 0x28,
     SAM_STAT_ACA_ACTIVE         = 0x30,
     SAM_STAT_TASK_ABORTED           = 0x40,
 };
 
 #define STATUS_MASK         0xfe
 /*
  *  SENSE KEYS
  */
 
 #define NO_SENSE            0x00
 #define RECOVERED_ERROR     0x01
 #define NOT_READY           0x02
 #define MEDIUM_ERROR        0x03
 #define HARDWARE_ERROR      0x04
 #define ILLEGAL_REQUEST     0x05
 #define UNIT_ATTENTION      0x06
 #define DATA_PROTECT        0x07
 #define BLANK_CHECK         0x08
 #define VENDOR_SPECIFIC     0x09
 #define COPY_ABORTED        0x0a
 #define ABORTED_COMMAND     0x0b
 #define VOLUME_OVERFLOW     0x0d
 #define MISCOMPARE          0x0e
 
 
 /*
  *  DEVICE TYPES
  *  Please keep them in 0x%02x format for $MODALIAS to work
  */
 
 #define TYPE_DISK           0x00
 #define TYPE_TAPE           0x01
 #define TYPE_PRINTER        0x02
 #define TYPE_PROCESSOR      0x03    /* HP scanners use this */
 #define TYPE_WORM           0x04    /* Treated as ROM by our system */
 #define TYPE_ROM            0x05
 #define TYPE_SCANNER        0x06
 #define TYPE_MOD            0x07    /* Magneto-optical disk -
                      * - treated as TYPE_DISK */
 #define TYPE_MEDIUM_CHANGER 0x08
 #define TYPE_COMM           0x09    /* Communications device */
 #define TYPE_RAID           0x0c
 #define TYPE_ENCLOSURE      0x0d    /* Enclosure Services Device */
 #define TYPE_RBC        0x0e
 #define TYPE_OSD            0x11
 #define TYPE_ZBC            0x14
 #define TYPE_WLUN           0x1e    /* well-known logical unit */
 #define TYPE_NO_LUN         0x7f
 
 /* SCSI protocols; these are taken from SPC-3 section 7.5 */
 enum scsi_protocol {
     SCSI_PROTOCOL_FCP = 0,  /* Fibre Channel */
     SCSI_PROTOCOL_SPI = 1,  /* parallel SCSI */
     SCSI_PROTOCOL_SSA = 2,  /* Serial Storage Architecture - Obsolete */
     SCSI_PROTOCOL_SBP = 3,  /* firewire */
     SCSI_PROTOCOL_SRP = 4,  /* Infiniband RDMA */
     SCSI_PROTOCOL_ISCSI = 5,
     SCSI_PROTOCOL_SAS = 6,
     SCSI_PROTOCOL_ADT = 7,  /* Media Changers */
     SCSI_PROTOCOL_ATA = 8,
     SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */
 };
 
 /*
  * ScsiLun: 8 byte LUN.
  */
 struct scsi_lun {
     __u8 scsi_lun[8];
 };
 
 /* SPC asymmetric access states */
 #define SCSI_ACCESS_STATE_OPTIMAL     0x00
 #define SCSI_ACCESS_STATE_ACTIVE      0x01
 #define SCSI_ACCESS_STATE_STANDBY     0x02
 #define SCSI_ACCESS_STATE_UNAVAILABLE 0x03
 #define SCSI_ACCESS_STATE_LBA         0x04
 #define SCSI_ACCESS_STATE_OFFLINE     0x0e
 #define SCSI_ACCESS_STATE_TRANSITIONING 0x0f
 
 /* Values for REPORT TARGET GROUP STATES */
 #define SCSI_ACCESS_STATE_MASK        0x0f
 #define SCSI_ACCESS_STATE_PREFERRED   0x80
 
 /* Reporting options for REPORT ZONES */
 enum zbc_zone_reporting_options {
     ZBC_ZONE_REPORTING_OPTION_ALL       = 0x00,
     ZBC_ZONE_REPORTING_OPTION_EMPTY     = 0x01,
     ZBC_ZONE_REPORTING_OPTION_IMPLICIT_OPEN = 0x02,
     ZBC_ZONE_REPORTING_OPTION_EXPLICIT_OPEN = 0x03,
     ZBC_ZONE_REPORTING_OPTION_CLOSED    = 0x04,
     ZBC_ZONE_REPORTING_OPTION_FULL      = 0x05,
     ZBC_ZONE_REPORTING_OPTION_READONLY  = 0x06,
     ZBC_ZONE_REPORTING_OPTION_OFFLINE   = 0x07,
     /* 0x08 to 0x0f are reserved */
     ZBC_ZONE_REPORTING_OPTION_NEED_RESET_WP = 0x10,
     ZBC_ZONE_REPORTING_OPTION_NON_SEQWRITE  = 0x11,
     /* 0x12 to 0x3e are reserved */
     ZBC_ZONE_REPORTING_OPTION_NON_WP    = 0x3f,
 };
 
 #define ZBC_REPORT_ZONE_PARTIAL 0x80
 
 /* Zone types of REPORT ZONES zone descriptors */
 enum zbc_zone_type {
     ZBC_ZONE_TYPE_CONV      = 0x1,
     ZBC_ZONE_TYPE_SEQWRITE_REQ  = 0x2,
     ZBC_ZONE_TYPE_SEQWRITE_PREF = 0x3,
     ZBC_ZONE_TYPE_SEQ_OR_BEFORE_REQ = 0x4,
     ZBC_ZONE_TYPE_GAP       = 0x5,
     /* 0x6 to 0xf are reserved */
 };
 
 /* Zone conditions of REPORT ZONES zone descriptors */
 enum zbc_zone_cond {
     ZBC_ZONE_COND_NO_WP     = 0x0,
     ZBC_ZONE_COND_EMPTY     = 0x1,
     ZBC_ZONE_COND_IMP_OPEN      = 0x2,
     ZBC_ZONE_COND_EXP_OPEN      = 0x3,
     ZBC_ZONE_COND_CLOSED        = 0x4,
     /* 0x5 to 0xc are reserved */
     ZBC_ZONE_COND_READONLY      = 0xd,
     ZBC_ZONE_COND_FULL      = 0xe,
     ZBC_ZONE_COND_OFFLINE       = 0xf,
 };
 
 enum zbc_zone_alignment_method {
     ZBC_CONSTANT_ZONE_LENGTH    = 0x1,
     ZBC_CONSTANT_ZONE_START_OFFSET  = 0x8,
 };
 
 /* Version descriptor values for INQUIRY */
 enum scsi_version_descriptor {
     SCSI_VERSION_DESCRIPTOR_FCP4    = 0x0a40,
     SCSI_VERSION_DESCRIPTOR_ISCSI   = 0x0960,
     SCSI_VERSION_DESCRIPTOR_SAM5    = 0x00a0,
     SCSI_VERSION_DESCRIPTOR_SAS3    = 0x0c60,
     SCSI_VERSION_DESCRIPTOR_SBC3    = 0x04c0,
     SCSI_VERSION_DESCRIPTOR_SBP3    = 0x0980,
     SCSI_VERSION_DESCRIPTOR_SPC4    = 0x0460,
     SCSI_VERSION_DESCRIPTOR_SRP = 0x0940
 };
 
 #endif /* _SCSI_PROTO_H_ */

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