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  1. /*
  2.  * Copyright (C) 2003 Josef Cejka
  3.  * Copyright (C) 2005 Jakub Jermar
  4.  * Copyright (C) 2005 Jakub Vana
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. #include <arch/drivers/keyboard.h>
  32. #include <console/chardev.h>
  33. #include <console/console.h>
  34. #include <putchar.h>
  35. #include <synch/spinlock.h>
  36. #include <synch/waitq.h>
  37. #include <typedefs.h>
  38. #include <print.h>
  39.  
  40. static void keyboard_enable(void);
  41. static void keyboard_disable(void);
  42.  
  43. static chardev_t kbrd;
  44. static chardev_operations_t ops = {
  45.     .resume = keyboard_enable,
  46.     .suspend = keyboard_disable
  47. };
  48.  
  49.  
  50. int kb_disable;
  51.  
  52.  
  53. /** Initialize keyboard subsystem. */
  54. void keyboard_init(void)
  55. {
  56.     chardev_initialize(&kbrd, &ops);
  57.     stdin = &kbrd;
  58.     kb_disable = false;
  59. }
  60.  
  61. /** Process keyboard interrupt. */
  62. void poll_keyboard(void)
  63. {
  64.     if(kb_disable) return;
  65.     char ch;
  66.  
  67.     ch = ski_getchar();
  68.     if(ch=='\r') ch='\n';
  69.     if(ch) chardev_push_character(&kbrd, ch);
  70.    
  71. }
  72.  
  73. /* Called from getc(). */
  74. void keyboard_enable(void)
  75. {
  76.     kb_disable=false;
  77. }
  78.  
  79. /* Called from getc(). */
  80. void keyboard_disable(void)
  81. {
  82.     kb_disable=true;   
  83. }
  84.