bsd/machine/cons.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1987 NeXT, Inc.
  30  */
  31
  32 struct consdev {
  33         char    *cn_name;       /* name of device in dev_name_list */
  34         int     (*cn_probe)(void);      /* probe and fill in consdev info */
  35         int     (*cn_init)(void);       /* turn on as console */
  36         int     (*cn_getc)(void);       /* kernel getchar interface */
  37         int     (*cn_putc)(void);       /* kernel putchar interface */
  38         struct  tty *cn_tp;     /* tty structure for console device */
  39         dev_t   cn_dev;         /* major/minor of device */
  40         short   cn_pri;         /* pecking order; the higher the better */
  41 };
  42
  43 /* values for cn_pri - reflect our policy for console selection */
  44 #define CN_DEAD         0       /* device doesn't exist */
  45 #define CN_NORMAL       1       /* device exists but is nothing special */
  46 #define CN_INTERNAL     2       /* "internal" bit-mapped display */
  47 #define CN_REMOTE       3       /* serial interface with remote bit set */
  48
  49 /* XXX */
  50 #define CONSMAJOR       0
  51
  52 #ifdef KERNEL
  53
  54 #include <sys/types.h>
  55 #include <sys/conf.h>
  56
  57 extern  struct consdev constab[];
  58 extern  struct consdev *cn_tab;
  59 extern  struct tty *cn_tty;
  60
  61 extern struct tty       *constty;               /* current console device */
  62
  63 int consopen(dev_t, int, int, struct proc *);
  64 int consclose(dev_t, int, int, struct proc *);
  65 int consread(dev_t, struct uio *, int);
  66 int conswrite(dev_t, struct uio *, int);
  67 int consioctl(dev_t, u_long, caddr_t, int, struct proc *);
  68 int consselect(dev_t, int, void *, struct proc *);
  69
  70 /*
  71  * These really want their own header file, but this is the only one in
  72  * common, and the km device is the keyboard monitor, so it's technically a
  73  * part of the console.
  74  */
  75 int kmopen(dev_t, int, int, struct proc *);
  76 int kmclose(dev_t, int, int, struct proc *);
  77 int kmread(dev_t, struct uio *, int);
  78 int kmwrite(dev_t, struct uio *, int);
  79 int kmioctl(dev_t, u_long, caddr_t, int, struct proc *);
  80 int kmputc(dev_t, char);
  81
  82 #endif
  83