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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.  
  43. #if (defined(sparc64))
  44. #if (defined(CONFIG_Z8530) || defined(CONFIG_NS16550))
  45. #include <genarch/kbd/scanc_sun.h>
  46. #endif
  47. #endif
  48.  
  49. #include <synch/spinlock.h>
  50. #include <console/chardev.h>
  51. #include <macros.h>
  52.  
  53. #define PRESSED_SHIFT       (1<<0)
  54. #define PRESSED_CAPSLOCK    (1<<1)
  55. #define LOCKED_CAPSLOCK     (1<<0)
  56.  
  57. #define ACTIVE_READ_BUFF_SIZE 16    /* Must be power of 2 */
  58.  
  59. chardev_t kbrd;
  60.  
  61. static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
  62.  
  63. SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
  64. static volatile int keyflags;       /**< Tracking of multiple keypresses. */
  65. static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
  66.  
  67. /** Process release of key.
  68.  *
  69.  * @param sc Scancode of the key being released.
  70.  */
  71. void key_released(uint8_t sc)
  72. {
  73.     spinlock_lock(&keylock);
  74.     switch (sc) {
  75.     case SC_LSHIFT:
  76.     case SC_RSHIFT:
  77.         keyflags &= ~PRESSED_SHIFT;
  78.         break;
  79.     case SC_CAPSLOCK:
  80.         keyflags &= ~PRESSED_CAPSLOCK;
  81.         if (lockflags & LOCKED_CAPSLOCK)
  82.             lockflags &= ~LOCKED_CAPSLOCK;
  83.         else
  84.             lockflags |= LOCKED_CAPSLOCK;
  85.         break;
  86.     default:
  87.         break;
  88.     }
  89.     spinlock_unlock(&keylock);
  90. }
  91.  
  92. /** Process keypress.
  93.  *
  94.  * @param sc Scancode of the key being pressed.
  95.  */
  96. void key_pressed(uint8_t sc)
  97. {
  98.     char *map = sc_primary_map;
  99.     char ascii = sc_primary_map[sc];
  100.     bool shift, capslock;
  101.     bool letter = false;
  102.  
  103.     spinlock_lock(&keylock);
  104.     switch (sc) {
  105.     case SC_LSHIFT:
  106.     case SC_RSHIFT:
  107.             keyflags |= PRESSED_SHIFT;
  108.         break;
  109.     case SC_CAPSLOCK:
  110.         keyflags |= PRESSED_CAPSLOCK;
  111.         break;
  112.     case SC_SPEC_ESCAPE:
  113.         break;
  114.     case SC_LEFTARR:
  115.         chardev_push_character(&kbrd, 0x1b);
  116.         chardev_push_character(&kbrd, 0x5b);
  117.         chardev_push_character(&kbrd, 0x44);
  118.         break;
  119.     case SC_RIGHTARR:
  120.         chardev_push_character(&kbrd, 0x1b);
  121.         chardev_push_character(&kbrd, 0x5b);
  122.         chardev_push_character(&kbrd, 0x43);
  123.         break;
  124.     case SC_UPARR:
  125.         chardev_push_character(&kbrd, 0x1b);
  126.         chardev_push_character(&kbrd, 0x5b);
  127.         chardev_push_character(&kbrd, 0x41);
  128.         break;
  129.     case SC_DOWNARR:
  130.         chardev_push_character(&kbrd, 0x1b);
  131.         chardev_push_character(&kbrd, 0x5b);
  132.         chardev_push_character(&kbrd, 0x42);
  133.         break;
  134.     case SC_HOME:
  135.         chardev_push_character(&kbrd, 0x1b);
  136.         chardev_push_character(&kbrd, 0x4f);
  137.         chardev_push_character(&kbrd, 0x48);
  138.         break;
  139.     case SC_END:
  140.         chardev_push_character(&kbrd, 0x1b);
  141.         chardev_push_character(&kbrd, 0x4f);
  142.         chardev_push_character(&kbrd, 0x46);
  143.         break;
  144.     case SC_DELETE:
  145.         chardev_push_character(&kbrd, 0x1b);
  146.         chardev_push_character(&kbrd, 0x5b);
  147.         chardev_push_character(&kbrd, 0x33);
  148.         chardev_push_character(&kbrd, 0x7e);
  149.         break;
  150.     default:
  151.             letter = islower(ascii);
  152.         capslock = (keyflags & PRESSED_CAPSLOCK) ||
  153.             (lockflags & LOCKED_CAPSLOCK);
  154.         shift = keyflags & PRESSED_SHIFT;
  155.         if (letter && capslock)
  156.             shift = !shift;
  157.         if (shift)
  158.             map = sc_secondary_map;
  159.         chardev_push_character(&kbrd, map[sc]);
  160.         break;
  161.     }
  162.     spinlock_unlock(&keylock);
  163. }
  164.  
  165. uint8_t active_read_buff_read(void)
  166. {
  167.     static int i=0;
  168.     i &= (ACTIVE_READ_BUFF_SIZE-1);
  169.     if(!active_read_buff[i]) {
  170.         return 0;
  171.     }
  172.     return active_read_buff[i++];
  173. }
  174.  
  175. void active_read_buff_write(uint8_t ch)
  176. {
  177.     static int i=0;
  178.     active_read_buff[i] = ch;
  179.     i++;
  180.     i &= (ACTIVE_READ_BUFF_SIZE-1);
  181.     active_read_buff[i]=0;
  182. }
  183.  
  184.  
  185. void active_read_key_pressed(uint8_t sc)
  186. {
  187.     char *map = sc_primary_map;
  188.     char ascii = sc_primary_map[sc];
  189.     bool shift, capslock;
  190.     bool letter = false;
  191.  
  192.     /*spinlock_lock(&keylock);*/
  193.     switch (sc) {
  194.     case SC_LSHIFT:
  195.     case SC_RSHIFT:
  196.             keyflags |= PRESSED_SHIFT;
  197.         break;
  198.     case SC_CAPSLOCK:
  199.         keyflags |= PRESSED_CAPSLOCK;
  200.         break;
  201.     case SC_SPEC_ESCAPE:
  202.         break;
  203.     case SC_LEFTARR:
  204.         active_read_buff_write(0x1b);
  205.         active_read_buff_write(0x5b);
  206.         active_read_buff_write(0x44);
  207.         break;
  208.     case SC_RIGHTARR:
  209.         active_read_buff_write(0x1b);
  210.         active_read_buff_write(0x5b);
  211.         active_read_buff_write(0x43);
  212.         break;
  213.     case SC_UPARR:
  214.         active_read_buff_write(0x1b);
  215.         active_read_buff_write(0x5b);
  216.         active_read_buff_write(0x41);
  217.         break;
  218.     case SC_DOWNARR:
  219.         active_read_buff_write(0x1b);
  220.         active_read_buff_write(0x5b);
  221.         active_read_buff_write(0x42);
  222.         break;
  223.     case SC_HOME:
  224.         active_read_buff_write(0x1b);
  225.         active_read_buff_write(0x4f);
  226.         active_read_buff_write(0x48);
  227.         break;
  228.     case SC_END:
  229.         active_read_buff_write(0x1b);
  230.         active_read_buff_write(0x4f);
  231.         active_read_buff_write(0x46);
  232.         break;
  233.     case SC_DELETE:
  234.         active_read_buff_write(0x1b);
  235.         active_read_buff_write(0x5b);
  236.         active_read_buff_write(0x33);
  237.         active_read_buff_write(0x7e);
  238.         break;
  239.     default:
  240.             letter = islower(ascii);
  241.         capslock = (keyflags & PRESSED_CAPSLOCK) ||
  242.             (lockflags & LOCKED_CAPSLOCK);
  243.         shift = keyflags & PRESSED_SHIFT;
  244.         if (letter && capslock)
  245.             shift = !shift;
  246.         if (shift)
  247.             map = sc_secondary_map;
  248.         active_read_buff_write(map[sc]);
  249.         break;
  250.     }
  251.     /*spinlock_unlock(&keylock);*/
  252.  
  253. }
  254.  
  255. /** @}
  256.  */
  257.