bsd/dev/i386/cons.h

   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)(void);      /* probe hardware, fill consdev info */
  29         int     (*cn_init)(void);       /* turn on as console */
  30         int     (*cn_getc)(void);       /* kernel getchar interface */
  31         int     (*cn_putc)(void);       /* 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; 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