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