bsd/dev/i386/cons.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1987 NeXT, Inc.
  32  */
  33
  34 struct consdev {
  35         char    *cn_name;               /* name of device in dev_name_list */
  36         int     (*cn_probe)(void);      /* probe hardware, fill consdev info */
  37         int     (*cn_init)(void);       /* turn on as console */
  38         int     (*cn_getc)(void);       /* kernel getchar interface */
  39         int     (*cn_putc)(void);       /* kernel putchar interface */
  40         struct  tty *cn_tp;             /* tty structure for console device */
  41         dev_t   cn_dev;                 /* major/minor of device */
  42         short   cn_pri;                 /* pecking order; higher the better */
  43 };
  44
  45 /* values for cn_pri - reflect our policy for console selection */
  46 #define CN_DEAD         0       /* device doesn't exist */
  47 #define CN_NORMAL       1       /* device exists but is nothing special */
  48 #define CN_INTERNAL     2       /* "internal" bit-mapped display */
  49 #define CN_REMOTE       3       /* serial interface with remote bit set */
  50
  51 /* XXX */
  52 #define CONSMAJOR       0
  53
  54 #ifdef KERNEL
  55
  56 #include <sys/types.h>
  57
  58 extern  struct consdev constab[];
  59 extern  struct consdev *cn_tab;
  60 extern  struct tty *cn_tty;
  61
  62 extern struct tty       cons;
  63 extern struct tty       *constty;               /* current console device */
  64 #endif
  65