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  1. /*
  2.  * Copyright (c) 2009 Jakub Jermar
  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. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief Keyboard processing.
  35.  */
  36.  
  37. #include <genarch/kbrd/kbrd.h>
  38. #include <genarch/kbrd/scanc.h>
  39.  
  40. #ifdef CONFIG_PC_KBD
  41. #include <genarch/kbrd/scanc_pc.h>
  42. #endif
  43.  
  44. #ifdef CONFIG_SUN_KBD
  45. #include <genarch/kbrd/scanc_sun.h>
  46. #endif
  47.  
  48. #include <synch/spinlock.h>
  49. #include <console/chardev.h>
  50. #include <console/console.h>
  51. #include <proc/thread.h>
  52. #include <arch.h>
  53. #include <macros.h>
  54.  
  55. #ifdef CONFIG_SUN_KBD
  56.     #define IGNORE_CODE  0x7f
  57. #endif
  58.  
  59. #define KEY_RELEASE  0x80
  60.  
  61. #define PRESSED_SHIFT     (1 << 0)
  62. #define PRESSED_CAPSLOCK  (1 << 1)
  63. #define LOCKED_CAPSLOCK   (1 << 0)
  64.  
  65. static indev_t kbrdout;
  66.  
  67. indev_operations_t kbrdout_ops = {
  68.     .poll = NULL
  69. };
  70.  
  71. SPINLOCK_INITIALIZE(keylock);   /**< keylock protects keyflags and lockflags. */
  72. static volatile int keyflags;   /**< Tracking of multiple keypresses. */
  73. static volatile int lockflags;  /**< Tracking of multiple keys lockings. */
  74.  
  75. static void key_released(uint8_t);
  76. static void key_pressed(uint8_t);
  77.  
  78. static void kkbrd(void *arg)
  79. {
  80.     indev_t *in = (indev_t *) arg;
  81.    
  82.     while (true) {
  83.         uint8_t sc = _getc(in);
  84.        
  85. #ifdef CONFIG_SUN_KBD
  86.         if (sc == IGNORE_CODE)
  87.             continue;
  88. #endif
  89.        
  90.         if (sc & KEY_RELEASE)
  91.             key_released(sc ^ KEY_RELEASE);
  92.         else
  93.             key_pressed(sc);
  94.     }
  95. }
  96.  
  97. void kbrd_init(indev_t *devin)
  98. {
  99.     indev_initialize("kbrd", &kbrdout, &kbrdout_ops);
  100.     thread_t *thread
  101.         = thread_create(kkbrd, devin, TASK, 0, "kkbrd", false);
  102.    
  103.     if (thread) {
  104.         stdin = &kbrdout;
  105.         thread_ready(thread);
  106.     }
  107. }
  108.  
  109. /** Process release of key.
  110.  *
  111.  * @param sc Scancode of the key being released.
  112.  */
  113. void key_released(uint8_t sc)
  114. {
  115.     spinlock_lock(&keylock);
  116.     switch (sc) {
  117.     case SC_LSHIFT:
  118.     case SC_RSHIFT:
  119.         keyflags &= ~PRESSED_SHIFT;
  120.         break;
  121.     case SC_CAPSLOCK:
  122.         keyflags &= ~PRESSED_CAPSLOCK;
  123.         if (lockflags & LOCKED_CAPSLOCK)
  124.             lockflags &= ~LOCKED_CAPSLOCK;
  125.         else
  126.             lockflags |= LOCKED_CAPSLOCK;
  127.         break;
  128.     default:
  129.         break;
  130.     }
  131.     spinlock_unlock(&keylock);
  132. }
  133.  
  134. /** Process keypress.
  135.  *
  136.  * @param sc Scancode of the key being pressed.
  137.  */
  138. void key_pressed(uint8_t sc)
  139. {
  140.     char *map = sc_primary_map;
  141.     char ascii = sc_primary_map[sc];
  142.     bool shift, capslock;
  143.     bool letter = false;
  144.    
  145.     spinlock_lock(&keylock);
  146.     switch (sc) {
  147.     case SC_LSHIFT:
  148.     case SC_RSHIFT:
  149.         keyflags |= PRESSED_SHIFT;
  150.         break;
  151.     case SC_CAPSLOCK:
  152.         keyflags |= PRESSED_CAPSLOCK;
  153.         break;
  154.     case SC_SPEC_ESCAPE:
  155.         break;
  156.     case SC_LEFTARR:
  157.         indev_push_character(stdin, 0x1b);
  158.         indev_push_character(stdin, 0x5b);
  159.         indev_push_character(stdin, 0x44);
  160.         break;
  161.     case SC_RIGHTARR:
  162.         indev_push_character(stdin, 0x1b);
  163.         indev_push_character(stdin, 0x5b);
  164.         indev_push_character(stdin, 0x43);
  165.         break;
  166.     case SC_UPARR:
  167.         indev_push_character(stdin, 0x1b);
  168.         indev_push_character(stdin, 0x5b);
  169.         indev_push_character(stdin, 0x41);
  170.         break;
  171.     case SC_DOWNARR:
  172.         indev_push_character(stdin, 0x1b);
  173.         indev_push_character(stdin, 0x5b);
  174.         indev_push_character(stdin, 0x42);
  175.         break;
  176.     case SC_HOME:
  177.         indev_push_character(stdin, 0x1b);
  178.         indev_push_character(stdin, 0x4f);
  179.         indev_push_character(stdin, 0x48);
  180.         break;
  181.     case SC_END:
  182.         indev_push_character(stdin, 0x1b);
  183.         indev_push_character(stdin, 0x4f);
  184.         indev_push_character(stdin, 0x46);
  185.         break;
  186.     case SC_DELETE:
  187.         indev_push_character(stdin, 0x1b);
  188.         indev_push_character(stdin, 0x5b);
  189.         indev_push_character(stdin, 0x33);
  190.         indev_push_character(stdin, 0x7e);
  191.         break;
  192.     default:
  193.         letter = islower(ascii);
  194.         capslock = (keyflags & PRESSED_CAPSLOCK) ||
  195.             (lockflags & LOCKED_CAPSLOCK);
  196.         shift = keyflags & PRESSED_SHIFT;
  197.         if (letter && capslock)
  198.             shift = !shift;
  199.         if (shift)
  200.             map = sc_secondary_map;
  201.         indev_push_character(stdin, map[sc]);
  202.         break;
  203.     }
  204.     spinlock_unlock(&keylock);
  205. }
  206.  
  207. /** @}
  208.  */
  209.