bsd/dev/i386/cons.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1987 NeXT, Inc.
  25  */
  26
  27 struct consdev {
  28         char    *cn_name;               /* name of device in dev_name_list */
  29         int     (*cn_probe)(void);      /* probe hardware, fill consdev info */
  30         int     (*cn_init)(void);       /* turn on as console */
  31         int     (*cn_getc)(void);       /* kernel getchar interface */
  32         int     (*cn_putc)(void);       /* kernel putchar interface */
  33         struct  tty *cn_tp;             /* tty structure for console device */
  34         dev_t   cn_dev;                 /* major/minor of device */
  35         short   cn_pri;                 /* pecking order; higher the better */
  36 };
  37
  38 /* values for cn_pri - reflect our policy for console selection */
  39 #define CN_DEAD         0       /* device doesn't exist */
  40 #define CN_NORMAL       1       /* device exists but is nothing special */
  41 #define CN_INTERNAL     2       /* "internal" bit-mapped display */
  42 #define CN_REMOTE       3       /* serial interface with remote bit set */
  43
  44 /* XXX */
  45 #define CONSMAJOR       0
  46
  47 #ifdef KERNEL
  48
  49 #include <sys/types.h>
  50
  51 extern  struct consdev constab[];
  52 extern  struct consdev *cn_tab;
  53 extern  struct tty *cn_tty;
  54
  55 extern struct tty       cons;
  56 extern struct tty       *constty;               /* current console device */
  57 #endif
  58