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Annotation of Gnu-Mach/device/cons.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Copyright (c) 1988-1994, The University of Utah and
        !             3:  * the Computer Systems Laboratory at the University of Utah (CSL).
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software is hereby
        !             7:  * granted provided that (1) source code retains these copyright, permission,
        !             8:  * and disclaimer notices, and (2) redistributions including binaries
        !             9:  * reproduce the notices in supporting documentation, and (3) all advertising
        !            10:  * materials mentioning features or use of this software display the following
        !            11:  * acknowledgement: ``This product includes software developed by the
        !            12:  * Computer Systems Laboratory at the University of Utah.''
        !            13:  *
        !            14:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            15:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
        !            16:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            17:  *
        !            18:  * CSL requests users of this software to return to [email protected] any
        !            19:  * improvements that they make and grant CSL redistribution rights.
        !            20:  *
        !            21:  *     Utah $Hdr: cons.h 1.10 94/12/14$
        !            22:  */
        !            23: 
        !            24: struct consdev {
        !            25: #ifdef MACH_KERNEL
        !            26:        char    *cn_name;       /* name of device in dev_name_list */
        !            27: #endif
        !            28:        int     (*cn_probe)();  /* probe hardware and fill in consdev info */
        !            29:        int     (*cn_init)();   /* turn on as console */
        !            30:        int     (*cn_getc)();   /* kernel getchar interface */
        !            31:        int     (*cn_putc)();   /* kernel putchar interface */
        !            32:        dev_t   cn_dev;         /* major/minor of device */
        !            33:        short   cn_pri;         /* pecking order; the higher the better */
        !            34: };
        !            35: 
        !            36: /* values for cn_pri - reflect our policy for console selection */
        !            37: #define        CN_DEAD         0       /* device doesn't exist */
        !            38: #define CN_NORMAL      1       /* device exists but is nothing special */
        !            39: #define CN_INTERNAL    2       /* "internal" bit-mapped display */
        !            40: #define CN_REMOTE      3       /* serial interface with remote bit set */
        !            41: 
        !            42: /* XXX */
        !            43: #define        CONSMAJOR       0
        !            44: 
        !            45: #define CONSBUFSIZE    1024
        !            46: 
        !            47: #ifdef KERNEL
        !            48: extern struct consdev constab[];
        !            49: extern struct consdev *cn_tab;
        !            50: #endif

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