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  1. /*
  2.  * Copyright (C) 2006 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   Key processing.
  35.  */
  36.  
  37. #include <genarch/kbd/key.h>
  38. #include <genarch/kbd/scanc.h>
  39. #ifdef CONFIG_I8042
  40. #include <genarch/kbd/scanc_pc.h>
  41. #endif
  42. #if (defined(CONFIG_Z8530) || defined(CONFIG_NS16550))
  43. #include <genarch/kbd/scanc_sun.h>
  44. #endif
  45. #include <synch/spinlock.h>
  46. #include <console/chardev.h>
  47. #include <typedefs.h>
  48. #include <macros.h>
  49.  
  50. #define PRESSED_SHIFT       (1<<0)
  51. #define PRESSED_CAPSLOCK    (1<<1)
  52. #define LOCKED_CAPSLOCK     (1<<0)
  53.  
  54. #define ACTIVE_READ_BUFF_SIZE 16    /* Must be power of 2 */
  55.  
  56. static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
  57.  
  58. SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
  59. static volatile int keyflags;       /**< Tracking of multiple keypresses. */
  60. static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
  61.  
  62. /** Process release of key.
  63.  *
  64.  * @param sc Scancode of the key being released.
  65.  */
  66. void key_released(uint8_t sc)
  67. {
  68.     spinlock_lock(&keylock);
  69.     switch (sc) {
  70.         case SC_LSHIFT:
  71.         case SC_RSHIFT:
  72.         keyflags &= ~PRESSED_SHIFT;
  73.         break;
  74.         case SC_CAPSLOCK:
  75.         keyflags &= ~PRESSED_CAPSLOCK;
  76.         if (lockflags & LOCKED_CAPSLOCK)
  77.             lockflags &= ~LOCKED_CAPSLOCK;
  78.         else
  79.             lockflags |= LOCKED_CAPSLOCK;
  80.         break;
  81.         default:
  82.         break;
  83.     }
  84.     spinlock_unlock(&keylock);
  85. }
  86.  
  87. /** Process keypress.
  88.  *
  89.  * @param sc Scancode of the key being pressed.
  90.  */
  91. void key_pressed(uint8_t sc)
  92. {
  93.     char *map = sc_primary_map;
  94.     char ascii = sc_primary_map[sc];
  95.     bool shift, capslock;
  96.     bool letter = false;
  97.  
  98.     spinlock_lock(&keylock);
  99.     switch (sc) {
  100.     case SC_LSHIFT:
  101.     case SC_RSHIFT:
  102.             keyflags |= PRESSED_SHIFT;
  103.         break;
  104.     case SC_CAPSLOCK:
  105.         keyflags |= PRESSED_CAPSLOCK;
  106.         break;
  107.     case SC_SPEC_ESCAPE:
  108.         break;
  109.     case SC_LEFTARR:
  110.         chardev_push_character(&kbrd, 0x1b);
  111.         chardev_push_character(&kbrd, 0x5b);
  112.         chardev_push_character(&kbrd, 0x44);
  113.         break;
  114.     case SC_RIGHTARR:
  115.         chardev_push_character(&kbrd, 0x1b);
  116.         chardev_push_character(&kbrd, 0x5b);
  117.         chardev_push_character(&kbrd, 0x43);
  118.         break;
  119.     case SC_UPARR:
  120.         chardev_push_character(&kbrd, 0x1b);
  121.         chardev_push_character(&kbrd, 0x5b);
  122.         chardev_push_character(&kbrd, 0x41);
  123.         break;
  124.     case SC_DOWNARR:
  125.         chardev_push_character(&kbrd, 0x1b);
  126.         chardev_push_character(&kbrd, 0x5b);
  127.         chardev_push_character(&kbrd, 0x42);
  128.         break;
  129.     case SC_HOME:
  130.         chardev_push_character(&kbrd, 0x1b);
  131.         chardev_push_character(&kbrd, 0x4f);
  132.         chardev_push_character(&kbrd, 0x48);
  133.         break;
  134.     case SC_END:
  135.         chardev_push_character(&kbrd, 0x1b);
  136.         chardev_push_character(&kbrd, 0x4f);
  137.         chardev_push_character(&kbrd, 0x46);
  138.         break;
  139.     case SC_DELETE:
  140.         chardev_push_character(&kbrd, 0x1b);
  141.         chardev_push_character(&kbrd, 0x5b);
  142.         chardev_push_character(&kbrd, 0x33);
  143.         chardev_push_character(&kbrd, 0x7e);
  144.         break;
  145.     default:
  146.             letter = is_lower(ascii);
  147.         capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
  148.         shift = keyflags & PRESSED_SHIFT;
  149.         if (letter && capslock)
  150.             shift = !shift;
  151.         if (shift)
  152.             map = sc_secondary_map;
  153.         chardev_push_character(&kbrd, map[sc]);
  154.         break;
  155.     }
  156.     spinlock_unlock(&keylock);
  157. }
  158.  
  159. uint8_t active_read_buff_read(void)
  160. {
  161.     static int i=0;
  162.     i &= (ACTIVE_READ_BUFF_SIZE-1);
  163.     if(!active_read_buff[i]) {
  164.         return 0;
  165.     }
  166.     return active_read_buff[i++];
  167. }
  168.  
  169. void active_read_buff_write(uint8_t ch)
  170. {
  171.     static int i=0;
  172.     active_read_buff[i] = ch;
  173.     i++;
  174.     i &= (ACTIVE_READ_BUFF_SIZE-1);
  175.     active_read_buff[i]=0;
  176. }
  177.  
  178.  
  179. void active_read_key_pressed(uint8_t sc)
  180. {
  181.     char *map = sc_primary_map;
  182.     char ascii = sc_primary_map[sc];
  183.     bool shift, capslock;
  184.     bool letter = false;
  185.  
  186.     /*spinlock_lock(&keylock);*/
  187.     switch (sc) {
  188.     case SC_LSHIFT:
  189.     case SC_RSHIFT:
  190.             keyflags |= PRESSED_SHIFT;
  191.         break;
  192.     case SC_CAPSLOCK:
  193.         keyflags |= PRESSED_CAPSLOCK;
  194.         break;
  195.     case SC_SPEC_ESCAPE:
  196.         break;
  197.     case SC_LEFTARR:
  198.         active_read_buff_write(0x1b);
  199.         active_read_buff_write(0x5b);
  200.         active_read_buff_write(0x44);
  201.         break;
  202.     case SC_RIGHTARR:
  203.         active_read_buff_write(0x1b);
  204.         active_read_buff_write(0x5b);
  205.         active_read_buff_write(0x43);
  206.         break;
  207.     case SC_UPARR:
  208.         active_read_buff_write(0x1b);
  209.         active_read_buff_write(0x5b);
  210.         active_read_buff_write(0x41);
  211.         break;
  212.     case SC_DOWNARR:
  213.         active_read_buff_write(0x1b);
  214.         active_read_buff_write(0x5b);
  215.         active_read_buff_write(0x42);
  216.         break;
  217.     case SC_HOME:
  218.         active_read_buff_write(0x1b);
  219.         active_read_buff_write(0x4f);
  220.         active_read_buff_write(0x48);
  221.         break;
  222.     case SC_END:
  223.         active_read_buff_write(0x1b);
  224.         active_read_buff_write(0x4f);
  225.         active_read_buff_write(0x46);
  226.         break;
  227.     case SC_DELETE:
  228.         active_read_buff_write(0x1b);
  229.         active_read_buff_write(0x5b);
  230.         active_read_buff_write(0x33);
  231.         active_read_buff_write(0x7e);
  232.         break;
  233.     default:
  234.             letter = is_lower(ascii);
  235.         capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
  236.         shift = keyflags & PRESSED_SHIFT;
  237.         if (letter && capslock)
  238.             shift = !shift;
  239.         if (shift)
  240.             map = sc_secondary_map;
  241.         active_read_buff_write(map[sc]);
  242.         break;
  243.     }
  244.     /*spinlock_unlock(&keylock);*/
  245.  
  246. }
  247.  
  248. /** @}
  249.  */
  250.