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Annotation of XNU/bsd/dev/i386/cons.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* 
        !            23:  * Copyright (c) 1987 NeXT, Inc.
        !            24:  */
        !            25:  
        !            26: struct consdev {
        !            27:        char    *cn_name;       /* name of device in dev_name_list */
        !            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:        struct  tty *cn_tp;     /* tty structure for console device */
        !            33:        dev_t   cn_dev;         /* major/minor of device */
        !            34:        short   cn_pri;         /* pecking order; the higher the better */
        !            35: };
        !            36: 
        !            37: /* values for cn_pri - reflect our policy for console selection */
        !            38: #define        CN_DEAD         0       /* device doesn't exist */
        !            39: #define CN_NORMAL      1       /* device exists but is nothing special */
        !            40: #define CN_INTERNAL    2       /* "internal" bit-mapped display */
        !            41: #define CN_REMOTE      3       /* serial interface with remote bit set */
        !            42: 
        !            43: /* XXX */
        !            44: #define        CONSMAJOR       0
        !            45: 
        !            46: #ifdef KERNEL
        !            47: 
        !            48: #include <sys/types.h>
        !            49: 
        !            50: extern struct consdev constab[];
        !            51: extern struct consdev *cn_tab;
        !            52: extern struct tty *cn_tty;
        !            53: 
        !            54: extern struct tty      cons;
        !            55: extern struct tty      *constty;               /* current console device */
        !            56: #endif
        !            57: 

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