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Annotation of cci/d/ioex/xylog.h, revision 1.1

1.1     ! root        1: 
        !             2: #define        NBPG            1024
        !             3: #define        PGSHIFT         10              /* LOG2(NBPG) */
        !             4: 
        !             5: /*
        !             6:  * Provide about n microseconds of delay
        !             7: */
        !             8: #define        DELAY(n)        { register int N = (n); while (--N > 0); }
        !             9: 
        !            10: #define IOBASE         0xff000000
        !            11: #define        XADDR           0xffee40        /* I/O addr of Xylogics controller */
        !            12: #define        XBASE           0xffec00        /* I/O page of Xylogics controller */
        !            13: #define        XOFFS           0x000240        /* Offset of Xylogics ctlr */
        !            14: #define        XYVEC           0xc0
        !            15: 
        !            16: /*     Bits used for CSR register */
        !            17: #define        GBSY            0x80            /* Go/busy bit */
        !            18: #define ERR            0x40            /* General error bit */
        !            19: #define DERR           0x20            /* double error */
        !            20: #define IPND           0x10            /* Interrupt pending bit */
        !            21: #define ADRM           0x8     /* Addressing mode : 1-24_bit, 0-20_bit */
        !            22:                                /* Selected by jumper (Sec.3.2.2) */
        !            23: #define AREQ           0x4             /* Attention request */
        !            24: #define        AACK            0x2             /* Attention ackownledge */
        !            25: #define DRDY           0x1             /* Drive ready */
        !            26: 
        !            27: /*     Bits used for status byte in IOPB */
        !            28: #define XS_ERR         0x80
        !            29: #define XS_DONE                0x1
        !            30: #define XS_ECODE       0xff
        !            31: 
        !            32: 
        !            33: #define        MAXXYDRIVES     4
        !            34: #define        EAGLE           0
        !            35: 
        !            36: struct DTYPE {
        !            37:        long type;
        !            38: };
        !            39: 
        !            40: 
        !            41: struct TYPEPAR {
        !            42:        long noheads;
        !            43:        long nosecs;
        !            44:        long nocyls;
        !            45:        char name[8];
        !            46: };
        !            47: 
        !            48: 
        !            49: struct Xreg {
        !            50:        char relow;     /* IOPB relocation reg. low byte */
        !            51:        char rehig;     /* IOPB relocation reg. high byte */
        !            52:        char adlow;     /* IOPB address reg. low byte */
        !            53:        char adhig;     /* IOPB address reg. high byte */
        !            54:        char csr;       /* Controller status register */
        !            55:        char crr;       /* Controller reset/update register */
        !            56: };
        !            57: 
        !            58: struct IOPB {
        !            59:        char comm;      /* Opcode */
        !            60:        char imode;     /* Interrupt mode */
        !            61:        char stat1;     /* status 1 */
        !            62:        char stat2;     /* status 2 */
        !            63:        char throt;     /* throttle word */
        !            64:        char devno;     /* Drive type, unit select */
        !            65:        char headr;     /* head address */
        !            66:        char secadr;    /* sector address */
        !            67:        char calow;     /* Cylinder address low */
        !            68:        char cahig;     /* Cylinder address high */
        !            69:        char sclow;     /* Sector count low */
        !            70:        char schig;     /* Sector count high */
        !            71:        char dalow;     /* Data address low */
        !            72:        char dahig;     /* Data address high */
        !            73:        char drlow;     /* Data relocation low */
        !            74:        char drhig;     /* Data relocation high */
        !            75:        char hoffs;     /* Head offset */
        !            76:        char unused;
        !            77:        char niolow;    /* Next IOPB address low */
        !            78:        char niohig;    /* Next IOPB address high */
        !            79:        char ecclow;    /* ECC mask pattern low */
        !            80:        char ecchig;    /* ECC mask pattern high */
        !            81:        char ebalow;    /* ECC bit address low */
        !            82:        char ebahig;    /* ECC bit address high */
        !            83: };
        !            84: 
        !            85: /*     Used in COMM byte of IOPB       */
        !            86: #define        IEN             0x10
        !            87: #define AUD            0x80
        !            88: 
        !            89: /*     Used in IMODE byte of IOPB      */
        !            90: #define        IEI             0x40
        !            91: 
        !            92: /*     Opcodes         */
        !            93: #define XFORMAT                7
        !            94: #define        SETDRIVE        0xb
        !            95: #define XYREAD         2
        !            96: #define XYWRITE                1

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