com32/include/dev.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   Permission is hereby granted, free of charge, to any person
   6  *   obtaining a copy of this software and associated documentation
   7  *   files (the "Software"), to deal in the Software without
   8  *   restriction, including without limitation the rights to use,
   9  *   copy, modify, merge, publish, distribute, sublicense, and/or
  10  *   sell copies of the Software, and to permit persons to whom
  11  *   the Software is furnished to do so, subject to the following
  12  *   conditions:
  13  *
  14  *   The above copyright notice and this permission notice shall
  15  *   be included in all copies or substantial portions of the Software.
  16  *
  17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  *   OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * ----------------------------------------------------------------------- */
  27
  28 /*
  29  * console.h
  30  *
  31  * Alternative consoles
  32  */
  33
  34 #ifndef _DEV_H
  35 #define _DEV_H
  36
  37 #include <klibc/extern.h>
  38 #include <stdint.h>
  39 #include <stddef.h>
  40
  41 struct input_dev;
  42 struct output_dev;
  43
  44 __extern int opendev(const struct input_dev *, const struct output_dev *, int);
  45 __extern int openmem(const void *, size_t, int);
  46
  47 /* Common generic devices */
  48
  49 /* Null device */
  50 extern const struct input_dev dev_null_r;
  51 extern const struct output_dev dev_null_w;
  52
  53 /* Error device */
  54 extern const struct input_dev dev_error_r;
  55 extern const struct output_dev dev_error_w;
  56
  57 #endif /* _DEV_H */