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Annotation of researchv9/sys/sundev/streg.h, revision 1.1

1.1     ! root        1: /*     @(#)streg.h 1.1 86/02/03 SMI    */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 1985 by Sun Microsystems, Inc.
        !             5:  */
        !             6: 
        !             7: /*
        !             8:  * Defines for SCSI tape.
        !             9:  */
        !            10: #define        DEV_BSIZE       512
        !            11: #define        SENSE_LENGTH    16
        !            12: 
        !            13: /*
        !            14:  * Open flag codes
        !            15:  */
        !            16: #define        CLOSED          0
        !            17: #define        OPENING         1
        !            18: #define        OPEN_FAILED     2
        !            19: #define        OPEN            3
        !            20: #define        CLOSING         4
        !            21: 
        !            22: /*
        !            23:  * Operation codes.
        !            24:  */
        !            25: #define        SC_REWIND               SC_REZERO_UNIT
        !            26: #define        SC_WRITE_FILE_MARK      0x10
        !            27: #define SC_SPACE               0x11
        !            28: #define SC_MODE_SELECT         0x15
        !            29: #define SC_ERASE_CARTRIDGE     0x19
        !            30: #define SC_LOAD                        0x1b
        !            31: #define SC_SPACE_FILE          0x81    /* phony - for internal use only */
        !            32: #define SC_SPACE_REC           0x82    /* phony - for internal use only */
        !            33: 
        !            34: #define ST_TYPE_INVALID                0x00
        !            35: 
        !            36: /*
        !            37:  * Parameter list for the MODE_SELECT command.
        !            38:  * The parameter list contains a header, followed by zero or more
        !            39:  * block descriptors, followed by vendor unique parameters, if any.
        !            40:  */
        !            41: struct st_ms_hdr {
        !            42:        u_char  reserved1;      /* reserved */
        !            43:        u_char  reserved2;      /* reserved */
        !            44:        u_char            :1;   /* reserved */
        !            45:        u_char  bufm      :3;   /* buffered mode */
        !            46:        u_char  speed     :4;   /* speed */
        !            47:        u_char  bd_len;         /* length in bytes of all block descs */
        !            48: };
        !            49: 
        !            50: struct st_ms_bd {
        !            51:        u_char  density;        /* density code */
        !            52:        u_char  high_nb;        /* num of logical blocks on the medium that */
        !            53:        u_char  mid_nb;         /* are to be formatted with the density code */
        !            54:        u_char  low_nb;         /* and block length in block desc */
        !            55:        u_char  reserved;       /* reserved */
        !            56:        u_char  high_bl;        /* block length */
        !            57:        u_char  mid_bl;         /* block length */
        !            58:        u_char  low_bl;         /* block length */
        !            59: };
        !            60: 
        !            61: /*
        !            62:  * Mode Select Parameter List expected by emulex controllers.
        !            63:  */
        !            64: struct st_emulex_mspl {
        !            65:        struct st_ms_hdr hdr;   /* mode select header */
        !            66:        struct st_ms_bd  bd;    /* block descriptor */
        !            67:        u_char            :5;   /* unused */
        !            68:        u_char  dea       :1;   /* disable erase ahead */
        !            69:        u_char  aui       :1;   /* auto-load inhibit */
        !            70:        u_char  sec       :1;   /* soft error count */
        !            71: };
        !            72: #define EM_MS_PL_LEN   13      /* length of mode select param list */
        !            73: #define EM_MS_BD_LEN   8       /* length of block descriptors */
        !            74: 
        !            75: /*
        !            76:  * Sense info returned by Archive controllers.
        !            77:  */
        !            78: struct st_archive_sense {
        !            79:        struct scsi_ext_sense ext_sense; /* generic extended sense format */
        !            80: /*     u_char  rserved[4];
        !            81:        u_char  retries_msb;            /* retry count, most signif byte */
        !            82: /*     u_char  retries_lsb;            /* retry count, most signif byte */
        !            83: };
        !            84: 
        !            85: /* number of emulex sense bytes in addition to generic extended sense */
        !            86: #define AR_ES_ADD_LEN                  0
        !            87: 
        !            88: /*
        !            89:  * Macros for getting information from the sense data returned
        !            90:  * by the tape controller.
        !            91:  */
        !            92: #define ST_FILE_MARK(dsi, sense) \
        !            93:        (((struct scsi_ext_sense *)sense)->fil_mk)
        !            94: 
        !            95: #define ST_WRITE_PROT(dsi, sense) \
        !            96:        (((struct scsi_ext_sense *)sense)->key == SC_DATA_PROTECT)
        !            97: 
        !            98: #define ST_EOT(dsi, sense) \
        !            99:        (((struct scsi_ext_sense *)sense)->eom)
        !           100: 
        !           101: #define ST_ILLEGAL(dsi, sense) \
        !           102:        (((struct scsi_ext_sense *)sense)->key == SC_ILLEGAL_REQUEST)
        !           103: 
        !           104: #define ST_NO_CART(dsi, sense) \
        !           105:        (((struct scsi_ext_sense *)sense)->key == SC_NOT_READY)
        !           106: 
        !           107: #define ST_RESET(dsi, sense) \
        !           108:        (((struct scsi_ext_sense *)sense)->key == SC_UNIT_ATTENTION)
        !           109: 
        !           110: #define ST_CORRECTABLE(dsi, sense) \
        !           111:        (((struct scsi_ext_sense *)sense)->key == SC_RECOVERABLE_ERROR)
        !           112: 
        !           113: #define ST_EOD(dsi, sense) \
        !           114:        (((struct scsi_ext_sense *)sense)->key == SC_BLANK_CHECK)

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