/*      $OpenBSD: scsi_all.h,v 1.65 2022/01/11 23:10:11 jsg Exp $       */
/*      $NetBSD: scsi_all.h,v 1.10 1996/09/12 01:57:17 thorpej Exp $    */

/*
 * SCSI general  interface description
 */

/*
 * Largely written by Julian Elischer (julian@tfs.com)
 * for TRW Financial Systems.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
 */

#ifndef _SCSI_SCSI_ALL_H
#define _SCSI_SCSI_ALL_H

/*
 * SCSI command format
 */

/*
 * Define some bits that are in ALL (or a lot of) scsi commands
 */
#define SCSI_CTL_LINK           0x01
#define SCSI_CTL_FLAG           0x02
#define SCSI_CTL_VENDOR         0xC0


/*
 * Some old SCSI devices need the LUN to be set in the top 3 bits of the
 * second byte of the CDB.
 */
#define SCSI_CMD_LUN_MASK       0xe0
#define SCSI_CMD_LUN_SHIFT      5


struct scsi_generic {
        u_int8_t opcode;
        u_int8_t bytes[15];
};

struct scsi_test_unit_ready {
        u_int8_t opcode;
        u_int8_t byte2;
        u_int8_t unused[3];
        u_int8_t control;
};

struct scsi_send_diag {
        u_int8_t opcode;
        u_int8_t byte2;
#define SSD_UOL         0x01
#define SSD_DOL         0x02
#define SSD_SELFTEST    0x04
#define SSD_PF          0x10
        u_int8_t unused[1];
        u_int8_t paramlen[2];
        u_int8_t control;
};

struct scsi_sense {
        u_int8_t opcode;
        u_int8_t byte2;
        u_int8_t unused[2];
        u_int8_t length;
        u_int8_t control;
};

struct scsi_inquiry {
        u_int8_t opcode;
        u_int8_t flags;
#define SI_EVPD         0x01
        u_int8_t pagecode;
#define SI_PG_SUPPORTED 0x00
#define SI_PG_SERIAL    0x80
#define SI_PG_DEVID     0x83
#define SI_PG_ATA       0x89
        u_int8_t length[2];
        u_int8_t control;
};

struct scsi_mode_sense {
        u_int8_t opcode;
        u_int8_t byte2;
#define SMS_DBD                         0x08    /* Disable Block Descriptors */
        u_int8_t page;
#define SMS_PAGE_CODE                   0x3F
#define SMS_PAGE_CTRL                   0xC0
#define SMS_PAGE_CTRL_CURRENT           0x00
#define SMS_PAGE_CTRL_CHANGEABLE        0x40
#define SMS_PAGE_CTRL_DEFAULT           0x80
#define SMS_PAGE_CTRL_SAVED             0xC0
        u_int8_t unused;
        u_int8_t length;
        u_int8_t control;
};

struct scsi_mode_sense_big {
        u_int8_t opcode;
        u_int8_t byte2;                         /* same bits as small version */
#define SMS_LLBAA                       0x10    /*    plus: Long LBA Accepted */
        u_int8_t page;                          /* same bits as small version */
        u_int8_t unused[4];
        u_int8_t length[2];
        u_int8_t control;
};

struct scsi_mode_select {
        u_int8_t opcode;
        u_int8_t byte2;
#define SMS_SP  0x01
#define SMS_PF  0x10
        u_int8_t unused[2];
        u_int8_t length;
        u_int8_t control;
};

struct scsi_mode_select_big {
        u_int8_t opcode;
        u_int8_t byte2;         /* same bits as small version */
        u_int8_t unused[5];
        u_int8_t length[2];
        u_int8_t control;
};

struct scsi_reserve {
        u_int8_t opcode;
        u_int8_t byte2;
        u_int8_t unused[2];
        u_int8_t length;
        u_int8_t control;
};

struct scsi_release {
        u_int8_t opcode;
        u_int8_t byte2;
        u_int8_t unused[2];
        u_int8_t length;
        u_int8_t control;
};

struct scsi_prevent {
        u_int8_t opcode;
        u_int8_t byte2;
        u_int8_t unused[2];
        u_int8_t how;
        u_int8_t control;
};
#define PR_PREVENT 0x01
#define PR_ALLOW   0x00

struct scsi_report_luns {
        u_int8_t opcode;
        u_int8_t unused;
        u_int8_t selectreport;
#define REPORT_NORMAL           0x00
#define REPORT_WELLKNOWN        0x01
#define REPORT_ALL              0x02
        u_int8_t unused2[3];
        u_int8_t length[4];
        u_int8_t unused4;
        u_int8_t control;
};

/*
 * Opcodes
 */
#define TEST_UNIT_READY         0x00
#define REQUEST_SENSE           0x03
#define INQUIRY                 0x12
#define MODE_SELECT             0x15
#define RESERVE                 0x16
#define RELEASE                 0x17
#define MODE_SENSE              0x1a
#define START_STOP              0x1b
#define RECEIVE_DIAGNOSTIC      0x1c
#define SEND_DIAGNOSTIC         0x1d
#define PREVENT_ALLOW           0x1e
#define POSITION_TO_ELEMENT     0x2b
#define WRITE_BUFFER            0x3b
#define READ_BUFFER             0x3c
#define CHANGE_DEFINITION       0x40
#define MODE_SELECT_BIG         0x55
#define MODE_SENSE_BIG          0x5a
#define REPORT_LUNS             0xa0

/*
 * Sort of an extra one, for SCSI_RESET.
 */
#define GENRETRY                1

/*
 * Device Types
 */
#define T_DIRECT        0x00    /* Direct access block device (SBC-4) */
#define T_SEQUENTIAL    0x01    /* Sequential access device (SSC-3) */
#define T_PRINTER       0x02    /* Printer device (SSC) */
#define T_PROCESSOR     0x03    /* Processor device (SPC-2) */
#define T_WORM          0x04    /* Write once device (SBC) */
#define T_CDROM         0x05    /* CD/DVD device (MMC-5) */
#define T_SCANNER       0x06    /* Scanner device (Obsolete) */
#define T_OPTICAL       0x07    /* Optical memory device (SBC) */
#define T_CHANGER       0x08    /* Media changer device (SMC-3) */
#define T_COMM          0x09    /* Communications device (Obsolete) */
#define T_ASC0          0x0a    /* Obsolete */
#define T_ASC1          0x0b    /* Obsolete */
#define T_STORARRAY     0x0c    /* Storage Array controller device (RAID) */
#define T_ENCLOSURE     0x0d    /* Enclosure services device (SES) */
#define T_RDIRECT       0x0e    /* Simplified direct access device (RBC) */
#define T_OCRW          0x0f    /* Optical card reader/writer (OCRW) */
#define T_BCC           0x10    /* Bridge Controller Commands (BCC) */
#define T_OSD           0x11    /* Object-based Storage device (OSD) */
#define T_ADC           0x12    /* Automation/Drive Interface (ADC-2) */
/* 0x13 - 0x1d RESERVED */
#define T_WELL_KNOWN_LU 0x1e    /* Well known logical unit */
#define T_NODEVICE      0x1F    /* Unknown or no device type */

#define T_REMOV         1
#define T_FIXED         0

struct scsi_inquiry_data {
        u_int8_t device;
#define SID_TYPE                0x1f
#define SID_QUAL                0xe0
#define         SID_QUAL_LU_OK          0x00
#define         SID_QUAL_LU_OFFLINE     0x20
#define         SID_QUAL_RSVD           0x40
#define         SID_QUAL_BAD_LU         0x60
        u_int8_t dev_qual2;
#define SID_QUAL2               0x7f
#define SID_REMOVABLE           0x80
        u_int8_t version;
#define SID_ANSII               0x07
#define SID_ECMA                0x38
#define SID_ISO                 0xc0
        u_int8_t response_format;
#define SID_RESPONSE_DATA_FMT   0x0f    /* < 2 == obsolete, > 2 reserved! */
#define         SID_SCSI2_RESPONSE      0x02
#define SID_HiSup               0x10    /* Hierarchical LUNs */
#define SID_NormACA             0x20    /* Normal ACA bit in CCB supported */
#define SID_TrmIOP              0x40    /* obsolete */
#define SID_AENC                0x80    /* obsolete */
        u_int8_t additional_length;
#define SID_SCSI2_HDRLEN        5       /* Bytes up to & including additional_length */
#define SID_SCSI2_ALEN          31      /* Additional bytes of basic SCSI2 info */
        u_int8_t spc3_flags;
#define SPC3_SID_PROTECT        0x01    /* 0 == Type 0, 1 == Type 1, 2 or 3 */
#define SPC3_SID_RESERVED       0x06
#define SPC3_SID_3PC            0x08    /* 3rd party copy */
#define SPC3_SID_TPGS_IMPLICIT  0x10    /* Implicit asymmetric LU access */
#define SPC3_SID_TPGS_EXPLICIT  0x20    /* Explicit asymmetric LU access */
#define SPC3_SID_ACC            0x40    /* Access controls controller */
#define SPC3_SID_SCCS           0x80    /* Embedded storage array controller */
        u_int8_t spc2_flags;
#define SPC2_SID_ADDR16         0x01    /* obsolete */
#define SPC2_RESERVED           0x06
#define SPC2_SID_NChngr         0x08    /* obsolete */
#define SPC2_SID_MultiP         0x10    /* multi-port target */
#define SPC2_VS                 0x20    /* ??? */
#define SPC2_SID_EncServ        0x40    /* Embedded enclosure services */
#define SPC2_SID_BQueue         0x80    /* obsolete */
        u_int8_t flags;
#define SID_VS                  0x01    /* ??? */
#define SID_CmdQue              0x02    /* Task management mode supported */
#define SID_Linked              0x08    /* obsolete */
#define SID_Sync                0x10    /* obsolete */
#define SID_WBus16              0x20    /* obsolete */
#define SID_WBus32              0x40    /* obsolete */
#define SID_RelAdr              0x80    /* obsolete */
        char    vendor[8];
        char    product[16];
        char    revision[4];
        u_int8_t extra[20];
        u_int8_t reserved[2];
        u_int8_t version_descriptor0[2];
        u_int8_t version_descriptor1[2];
        u_int8_t version_descriptor2[2];
        u_int8_t version_descriptor3[2];
        u_int8_t version_descriptor4[2];
        u_int8_t version_descriptor5[2];
        u_int8_t version_descriptor6[2];
        u_int8_t version_descriptor7[2];
        u_int8_t reserved2[22];
};

struct scsi_vpd_hdr {
        u_int8_t device;
        u_int8_t page_code;
        u_int8_t page_length[2];
};

struct scsi_vpd_serial {
        struct scsi_vpd_hdr hdr;
        char serial[32];
};

#define VPD_PROTO_ID_FC         0x0 /* Fibre Channel */
#define VPD_PROTO_ID_SPI        0x1 /* Parallel SCSI */
#define VPD_PROTO_ID_SSA        0x2
#define VPD_PROTO_ID_IEEE1394   0x3
#define VPD_PROTO_ID_SRP        0x4 /* SCSI RDMA Protocol */
#define VPD_PROTO_ID_ISCSI      0x5 /* Internet SCSI (iSCSI) */
#define VPD_PROTO_ID_SAS        0x6 /* Serial Attached SCSI */
#define VPD_PROTO_ID_ADT        0x7 /* Automation/Drive Interface Transport */
#define VPD_PROTO_ID_ATA        0x7 /* ATA/ATAPI */
#define VPD_PROTO_ID_NONE       0xf

struct scsi_vpd_devid_hdr {
        u_int8_t pi_code;
#define VPD_DEVID_PI(_f)        (((_f) >> 4) & 0x0f)
#define VPD_DEVID_CODE(_f)      (((_f) >> 0) & 0x0f)
#define VPD_DEVID_CODE_BINARY           0x1
#define VPD_DEVID_CODE_ASCII            0x2
#define VPD_DEVID_CODE_UTF8             0x3
        u_int8_t flags;
#define VPD_DEVID_PIV           0x80
#define VPD_DEVID_ASSOC(_f)     ((_f) & 0x30)
#define VPD_DEVID_ASSOC_LU              0x00
#define VPD_DEVID_ASSOC_PORT            0x10
#define VPD_DEVID_ASSOC_TARG            0x20
#define VPD_DEVID_TYPE(_f)      ((_f) & 0x0f)
#define VPD_DEVID_TYPE_VENDOR           0x0
#define VPD_DEVID_TYPE_T10              0x1
#define VPD_DEVID_TYPE_EUI64            0x2
#define VPD_DEVID_TYPE_NAA              0x3
#define VPD_DEVID_TYPE_RELATIVE         0x4
#define VPD_DEVID_TYPE_PORT             0x5
#define VPD_DEVID_TYPE_LU               0x6
#define VPD_DEVID_TYPE_MD5              0x7
#define VPD_DEVID_TYPE_NAME             0x8
        u_int8_t reserved;
        u_int8_t len;
};

struct scsi_vpd_ata {
        struct scsi_vpd_hdr hdr;

        u_int8_t _reserved1[4];
        u_int8_t sat_vendor[8];
        u_int8_t sat_product[16];
        u_int8_t sat_revision[4];
        u_int8_t device_signature[20];
        u_int8_t command_code;
#define VPD_ATA_COMMAND_CODE_ATA        0xec
#define VPD_ATA_COMMAND_CODE_ATAPI      0xa1
        u_int8_t _reserved2[3];
        u_int8_t identify[512];
};

struct scsi_read_cap_data {
        u_int8_t addr[4];
        u_int8_t length[4];
};

struct scsi_read_cap_data_16 {
        u_int8_t addr[8];
        u_int8_t length[4];
        u_int8_t p_type_prot;
#define RC16_PROT_EN            0x01    /* Protection type is 0 when 0 */
#define RC16_PROT_P_TYPE        0x0e
#define         RC16_P_TYPE_1           0x00    /* Protection type 1 */
#define         RC16_P_TYPE_2           0x02    /* Protection type 2 */
#define         RC16_P_TYPE_3           0x04    /* Protection type 3 */
#define RC16_BASIS              0x30    /* Meaning of addr */
#define         RC16_BASIS_HIGH         0x00    /* highest LBA of zone */
#define         RC16_BASIS_LAST         0x10    /* last LBA on unit */
        u_int8_t logical_per_phys;      /* Logical Blks Per Physical Blk Exp */
#define RC16_LBPPB_EXPONENT     0x0f    /* 2**N LB per PB, 0 means unknown */
#define RC16_PIIPLB_EXPONENT    0xf0    /* 2**N Prot info intervals per LB */
        u_int8_t lowest_aligned[2];
#define RC16_LALBA              0x3fff  /* lowest aligned LBA */
#define RC16_LBPRZ              0x4000  /* unmapped LBA returns all zeros */
#define READ_CAP_16_TPRZ        0x4000  /* XXX old name used in driver(s) */
#define RC16_LBPME              0x8000  /* LB provisioning management enabled */
#define READ_CAP_16_TPE         0x8000  /* XXX old name used in driver(s) */
        u_int8_t reserved[16];
};

struct scsi_sense_data_unextended {
/* 1*/  u_int8_t error_code;
/* 4*/  u_int8_t block[3];
};

struct scsi_sense_data {
/* 1*/  u_int8_t error_code;
#define SSD_ERRCODE_CURRENT     0x70
#define SSD_ERRCODE_DEFERRED    0x71
#define SSD_ERRCODE             0x7F
#define SSD_ERRCODE_VALID       0x80
/* 2*/  u_int8_t segment;
/* 3*/  u_int8_t flags;
#define SSD_KEY         0x0F
#define SSD_ILI         0x20
#define SSD_EOM         0x40
#define SSD_FILEMARK    0x80
/* 7*/  u_int8_t info[4];
/* 8*/  u_int8_t extra_len;
/*12*/  u_int8_t cmd_spec_info[4];
/*13*/  u_int8_t add_sense_code;
/*14*/  u_int8_t add_sense_code_qual;
/*15*/  u_int8_t fru;
/*16*/  u_int8_t sense_key_spec_1;
#define SSD_SCS_VALID           0x80
#define SSD_SCS_CDB_ERROR       0x40
#define SSD_SCS_SEGMENT_DESC    0x20
#define SSD_SCS_VALID_BIT_INDEX 0x08
#define SSD_SCS_BIT_INDEX       0x07
/*17*/  u_int8_t sense_key_spec_2;
/*18*/  u_int8_t sense_key_spec_3;
};

#define SKEY_NO_SENSE           0x00
#define SKEY_RECOVERED_ERROR    0x01
#define SKEY_NOT_READY          0x02
#define SKEY_MEDIUM_ERROR       0x03
#define SKEY_HARDWARE_ERROR     0x04
#define SKEY_ILLEGAL_REQUEST    0x05
#define SKEY_UNIT_ATTENTION     0x06
#define SKEY_WRITE_PROTECT      0x07
#define SKEY_BLANK_CHECK        0x08
#define SKEY_VENDOR_UNIQUE      0x09
#define SKEY_COPY_ABORTED       0x0A
#define SKEY_ABORTED_COMMAND    0x0B
#define SKEY_EQUAL              0x0C
#define SKEY_VOLUME_OVERFLOW    0x0D
#define SKEY_MISCOMPARE         0x0E
#define SKEY_RESERVED           0x0F


/* Additional sense code info */
#define ASC_ASCQ(ssd)   ((ssd->add_sense_code << 8) | ssd->add_sense_code_qual)

#define SENSE_FILEMARK_DETECTED                 0x0001
#define SENSE_END_OF_MEDIUM_DETECTED            0x0002
#define SENSE_SETMARK_DETECTED                  0x0003
#define SENSE_BEGINNING_OF_MEDIUM_DETECTED      0x0004
#define SENSE_END_OF_DATA_DETECTED              0x0005
#define SENSE_NOT_READY_BECOMING_READY          0x0401
#define SENSE_NOT_READY_INIT_REQUIRED           0x0402
#define SENSE_NOT_READY_FORMAT                  0x0404
#define SENSE_NOT_READY_REBUILD                 0x0405
#define SENSE_NOT_READY_RECALC                  0x0406
#define SENSE_NOT_READY_INPROGRESS              0x0407
#define SENSE_NOT_READY_LONGWRITE               0x0408
#define SENSE_NOT_READY_SELFTEST                0x0409
#define SENSE_POWER_RESET_OR_BUS                0x2900
#define SENSE_POWER_ON                          0x2901
#define SENSE_BUS_RESET                         0x2902
#define SENSE_BUS_DEVICE_RESET                  0x2903
#define SENSE_DEVICE_INTERNAL_RESET             0x2904
#define SENSE_TSC_CHANGE_SE                     0x2905
#define SENSE_TSC_CHANGE_LVD                    0x2906
#define SENSE_IT_NEXUS_LOSS                     0x2907
#define SENSE_BAD_MEDIUM                        0x3000
#define SENSE_NR_MEDIUM_UNKNOWN_FORMAT          0x3001
#define SENSE_NR_MEDIUM_INCOMPATIBLE_FORMAT     0x3002
#define SENSE_NW_MEDIUM_UNKNOWN_FORMAT          0x3004
#define SENSE_NW_MEDIUM_INCOMPATIBLE_FORMAT     0x3005
#define SENSE_NF_MEDIUM_INCOMPATIBLE_FORMAT     0x3006
#define SENSE_NW_MEDIUM_AC_MISMATCH             0x3008
#define SENSE_NOMEDIUM                          0x3A00
#define SENSE_NOMEDIUM_TCLOSED                  0x3A01
#define SENSE_NOMEDIUM_TOPEN                    0x3A02
#define SENSE_NOMEDIUM_LOADABLE                 0x3A03
#define SENSE_NOMEDIUM_AUXMEM                   0x3A04
#define SENSE_CARTRIDGE_FAULT                   0x5200
#define SENSE_MEDIUM_REMOVAL_PREVENTED          0x5302

struct scsi_blk_desc {
        u_int8_t density;
        u_int8_t nblocks[3];
        u_int8_t reserved;
        u_int8_t blklen[3];
};

struct scsi_direct_blk_desc {
        u_int8_t nblocks[4];
        u_int8_t density;
        u_int8_t blklen[3];
};

struct scsi_blk_desc_big {
        u_int8_t nblocks[8];
        u_int8_t density;
        u_int8_t reserved[3];
        u_int8_t blklen[4];
};

struct scsi_mode_header {
        u_int8_t data_length;           /* Sense data length */
        u_int8_t medium_type;
        u_int8_t dev_spec;
        u_int8_t blk_desc_len;
};
#define VALID_MODE_HDR(_x)      ((_x)->data_length >= 3)

struct scsi_mode_header_big {
        u_int8_t data_length[2];        /* Sense data length */
        u_int8_t medium_type;
        u_int8_t dev_spec;
        u_int8_t reserved;
#define LONGLBA 0x01
        u_int8_t reserved2;
        u_int8_t blk_desc_len[2];
};
#define VALID_MODE_HDR_BIG(_x)  (_2btol((_x)->data_length) >= 6)

/* Both disks and tapes use dev_spec to report READONLY status. */
#define SMH_DSP_WRITE_PROT      0x80

union scsi_mode_sense_buf {
        struct scsi_mode_header hdr;
        struct scsi_mode_header_big hdr_big;
        u_char buf[254];        /* 255 & 256 bytes breaks some devices. */
                                /* ahci doesn't like 255, various don't like */
                                /* 256 because length must fit in 8 bits. */
} __packed;                     /* Ensure sizeof() is 254! */

struct scsi_report_luns_data {
        u_int8_t length[4];     /* length of LUN inventory, in bytes */
        u_int8_t reserved[4];   /* unused */
        /*
         * LUN inventory- we only support the type zero form for now.
         */
#define RPL_LUNDATA_SIZE 8      /* Bytes per lun */
        struct {
                u_int8_t lundata[RPL_LUNDATA_SIZE];
        } luns[256];            /* scsi_link->luns is u_int8_t. */
};
#define RPL_LUNDATA_T0LUN       1       /* Type 0 LUN is in lundata[1] */

struct scsi_lun_array {
        uint8_t luns[256];
        int     count;
        int     dumbscan;
};

/*
 * ATA PASS-THROUGH as per SAT2
 */

#define ATA_PASSTHRU_12         0xa1
#define ATA_PASSTHRU_16         0x85

#define ATA_PASSTHRU_PROTO_MASK         0x1e
#define ATA_PASSTHRU_PROTO_HW_RESET     0x00
#define ATA_PASSTHRU_PROTO_SW_RESET     0x02
#define ATA_PASSTHRU_PROTO_NON_DATA     0x06
#define ATA_PASSTHRU_PROTO_PIO_DATAIN   0x08
#define ATA_PASSTHRU_PROTO_PIO_DATAOUT  0x0a
#define ATA_PASSTHRU_PROTO_DMA          0x0c
#define ATA_PASSTHRU_PROTO_DMA_QUEUED   0x0e
#define ATA_PASSTHRU_PROTO_EXEC_DIAG    0x10
#define ATA_PASSTHRU_PROTO_NON_DATA_RST 0x12
#define ATA_PASSTHRU_PROTO_UDMA_DATAIN  0x14
#define ATA_PASSTHRU_PROTO_UDMA_DATAOUT 0x16
#define ATA_PASSTHRU_PROTO_FPDMA        0x18
#define ATA_PASSTHRU_PROTO_RESPONSE     0x1e

#define ATA_PASSTHRU_T_DIR_MASK         0x08
#define ATA_PASSTHRU_T_DIR_READ         0x08
#define ATA_PASSTHRU_T_DIR_WRITE        0x00

#define ATA_PASSTHRU_T_LEN_MASK         0x03
#define ATA_PASSTHRU_T_LEN_NONE         0x00
#define ATA_PASSTHRU_T_LEN_FEATURES     0x01
#define ATA_PASSTHRU_T_LEN_SECTOR_COUNT 0x02
#define ATA_PASSTHRU_T_LEN_TPSIU        0x03

struct scsi_ata_passthru_12 {
        u_int8_t opcode;
        u_int8_t count_proto;
        u_int8_t flags;
        u_int8_t features;
        u_int8_t sector_count;
        u_int8_t lba_low;
        u_int8_t lba_mid;
        u_int8_t lba_high;
        u_int8_t device;
        u_int8_t command;
        u_int8_t _reserved;
        u_int8_t control;
};

struct scsi_ata_passthru_16 {
        u_int8_t opcode;
        u_int8_t count_proto;
        u_int8_t flags;
        u_int8_t features[2];
        u_int8_t sector_count[2];
        u_int8_t lba_low[2];
        u_int8_t lba_mid[2];
        u_int8_t lba_high[2];
        u_int8_t device;
        u_int8_t command;
        u_int8_t control;
};

/*
 * SPI status information unit. See section 14.3.5 of SPI-3.
 */
struct scsi_status_iu_header {
/* 2*/  u_int8_t reserved[2];
/* 3*/  u_int8_t flags;
#define SIU_SNSVALID 0x2
#define SIU_RSPVALID 0x1
/* 4*/  u_int8_t status;
/* 8*/  u_int8_t sense_length[4];
/*12*/  u_int8_t pkt_failures_length[4];
        u_int8_t data[1]; /* <pkt failure list><sense data> OR <sense_data> */
};

#define SIU_PKTFAIL_CODE(siu)   ((siu)->data[3])
#define         SIU_PFC_NONE                    0x00
#define         SIU_PFC_CIU_FIELDS_INVALID      0x02
#define         SIU_PFC_TMF_NOT_SUPPORTED       0x04
#define         SIU_PFC_TMF_FAILED              0x05
#define         SIU_PFC_INVALID_TYPE_CODE       0x06
#define         SIU_PFC_ILLEGAL_REQUEST         0x07

#define SIU_SENSE_LENGTH(siu)   (_4btol((siu)->sense_length))
#define SIU_SENSE_DATA(siu)     (((siu)->flags & SIU_RSPVALID) ?        \
   &(siu)->data[_4btol((siu)->pkt_failures_length)] : &(siu)->data[0])

/*
 * Values for 'Task Management Flags' field of SPI command information unit.
 * See section 14.3.1 of SPI-3.
 */
#define SIU_TASKMGMT_NONE               0x00
#define SIU_TASKMGMT_ABORT_TASK         0x01
#define SIU_TASKMGMT_ABORT_TASK_SET     0x02
#define SIU_TASKMGMT_CLEAR_TASK_SET     0x04
#define SIU_TASKMGMT_LUN_RESET          0x08
#define SIU_TASKMGMT_TARGET_RESET       0x20
#define SIU_TASKMGMT_CLEAR_ACA          0x40

/*
 * Status Byte
 */
#define SCSI_OK                 0x00
#define SCSI_CHECK              0x02
#define SCSI_COND_MET           0x04
#define SCSI_BUSY               0x08
#define SCSI_INTERM             0x10
#define SCSI_INTERM_COND_MET    0x14
#define SCSI_RESV_CONFLICT      0x18
#define SCSI_TERMINATED         0x22
#define SCSI_QUEUE_FULL         0x28    /* Old (Pre SCSI-3) name */
#define SCSI_TASKSET_FULL       0x28    /* New (SCSI-3)     name */
#define SCSI_ACA_ACTIVE         0x30

#endif /* _SCSI_SCSI_ALL_H */