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Annotation of coherent/f/usr/include/sys/io.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Version 4.0
        !             3:  *     Copyright 1984, 1992 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: /*
        !             7:  * /usr/include/sys/io.h
        !             8:  *
        !             9:  * I/O template.
        !            10:  *
        !            11:  * Revised: Wed Apr  7 15:09:53 1993 CDT
        !            12:  */
        !            13: 
        !            14: #ifndef         __SYS_IO_H__
        !            15: #define         __SYS_IO_H__
        !            16: 
        !            17: #include <common/feature.h>
        !            18: #include <common/__paddr.h>
        !            19: #include <sys/types.h>
        !            20: 
        !            21: /*
        !            22:  * Structure used to store parameters for I/O.
        !            23:  */
        !            24: typedef struct io {
        !            25:        int      io_seg;                /* Space */
        !            26:        unsigned io_ioc;                /* Count */
        !            27: #if    _I386
        !            28:        off_t    io_seek;               /* Seek posiion */
        !            29:        union {
        !            30:                caddr_t vbase;          /* Virtual base */
        !            31:                __paddr_t pbase;        /* Physical base */
        !            32:        } io;
        !            33: #else
        !            34:        fsize_t  io_seek;               /* Seek posiion */
        !            35:        char     *io_base;              /* Virtual base */
        !            36:        __paddr_t       io_phys;        /* Physical base */
        !            37: #endif
        !            38:        short    io_flag;               /* Flags: 0, IONDLY */
        !            39: } IO;
        !            40: 
        !            41: /*
        !            42:  * Types of space I/O operation is being performed from.
        !            43:  */
        !            44: #define IOSYS  0                       /* System */
        !            45: #define IOUSR  1                       /* User */
        !            46: #define IOPHY  2                       /* Physical */
        !            47: 
        !            48: /*
        !            49:  * No delay if results are not immediately available. IONDLY is the funky
        !            50:  * internal name for O_NDELAY and IONONBLOCK is the version for O_NONBLOCK.
        !            51:  */
        !            52: #define        IONDLY          8
        !            53: #define        IONONBLOCK      16
        !            54: 
        !            55: #endif /* ! defined (__SYS_IO_H__) */

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