text: /*
   * 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 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 VARIABLE_LENGTH_CMD service action codes
   * see spc4r17 Section D.3.5, table D.7 and D.8 */
  #define VLC_SA_RECEIVE_CREDENTIAL 0x1800
  /* 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_SAME_32	      0x0d
  
  /* 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.
   */
  #define SAM_STAT_GOOD            0x00
  #define SAM_STAT_CHECK_CONDITION 0x02
  #define SAM_STAT_CONDITION_MET   0x04
  #define SAM_STAT_BUSY            0x08
  #define SAM_STAT_INTERMEDIATE    0x10
  #define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14
  #define SAM_STAT_RESERVATION_CONFLICT 0x18
  #define SAM_STAT_COMMAND_TERMINATED 0x22	/* obsolete in SAM-3 */
  #define SAM_STAT_TASK_SET_FULL   0x28
  #define SAM_STAT_ACA_ACTIVE      0x30
  #define SAM_STAT_TASK_ABORTED    0x40
  
  /*
   *  Status codes. These are deprecated as they are shifted 1 bit right
   *  from those found in the SCSI standards. This causes confusion for
   *  applications that are ported to several OSes. Prefer SAM Status codes
   *  above.
   */
  
  #define GOOD                 0x00
  #define CHECK_CONDITION      0x01
  #define CONDITION_GOOD       0x02
  #define BUSY                 0x04
  #define INTERMEDIATE_GOOD    0x08
  #define INTERMEDIATE_C_GOOD  0x0a
  #define RESERVATION_CONFLICT 0x0c
  #define COMMAND_TERMINATED   0x11
  #define QUEUE_FULL           0x14
  #define ACA_ACTIVE           0x18
  #define TASK_ABORTED         0x20
  
  #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 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
  
  #endif /* _SCSI_PROTO_H_ */
  