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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * Copyright (C) 2006 Josef Cejka
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup kbdia32 ia32
  31.  * @brief   HelenOS ia32 / amd64 arch dependent parts of uspace keyboard handler.
  32.  * @ingroup  kbd
  33.  * @{
  34.  */
  35. /** @file
  36.  * @ingroup kbdamd64
  37.  */
  38.  
  39. #include <arch/kbd.h>
  40. #include <ipc/ipc.h>
  41.  
  42. #define SPECIAL     255
  43. #define KEY_RELEASE 0x80
  44.  
  45. /**
  46.  * These codes read from i8042 data register are silently ignored.
  47.  */
  48. #define IGNORE_CODE 0x7f
  49.  
  50. #define PRESSED_SHIFT       (1<<0)
  51. #define PRESSED_CAPSLOCK    (1<<1)
  52. #define LOCKED_CAPSLOCK     (1<<0)
  53.  
  54. /** Scancodes. */
  55. #define SC_ESC      0x01
  56. #define SC_BACKSPACE    0x0e
  57. #define SC_LSHIFT   0x2a
  58. #define SC_RSHIFT   0x36
  59. #define SC_CAPSLOCK 0x3a
  60. #define SC_SPEC_ESCAPE  0xe0
  61. #define SC_LEFTARR      0x4b
  62. #define SC_RIGHTARR     0x4d
  63. #define SC_UPARR        0x48
  64. #define SC_DOWNARR      0x50
  65. #define SC_DELETE       0x53
  66. #define SC_HOME         0x47
  67. #define SC_END          0x4f
  68.  
  69. #define FUNCTION_KEYS 0x100
  70.  
  71. static volatile int keyflags;       /**< Tracking of multiple keypresses. */
  72. static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
  73.  
  74. /** Primary meaning of scancodes. */
  75. static int sc_primary_map[] = {
  76.     SPECIAL, /* 0x00 */
  77.     SPECIAL, /* 0x01 - Esc */
  78.     '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
  79.     '\b', /* 0x0e - Backspace */
  80.     '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
  81.     SPECIAL, /* 0x1d - LCtrl */
  82.     'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
  83.     '`',
  84.     SPECIAL, /* 0x2a - LShift */
  85.     '\\',
  86.     'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
  87.     SPECIAL, /* 0x36 - RShift */
  88.     '*',
  89.     SPECIAL, /* 0x38 - LAlt */
  90.     ' ',
  91.     SPECIAL, /* 0x3a - CapsLock */
  92.     (FUNCTION_KEYS | 1), /* 0x3b - F1 */
  93.     (FUNCTION_KEYS | 2), /* 0x3c - F2 */
  94.     (FUNCTION_KEYS | 3), /* 0x3d - F3 */
  95.     (FUNCTION_KEYS | 4), /* 0x3e - F4 */
  96.     (FUNCTION_KEYS | 5), /* 0x3f - F5 */
  97.     (FUNCTION_KEYS | 6), /* 0x40 - F6 */
  98.     (FUNCTION_KEYS | 7), /* 0x41 - F7 */
  99.     (FUNCTION_KEYS | 8), /* 0x42 - F8 */
  100.     (FUNCTION_KEYS | 9), /* 0x43 - F9 */
  101.     (FUNCTION_KEYS | 10), /* 0x44 - F10 */
  102.     SPECIAL, /* 0x45 - NumLock */
  103.     SPECIAL, /* 0x46 - ScrollLock */
  104.     '7', '8', '9', '-',
  105.     '4', '5', '6', '+',
  106.     '1', '2', '3',
  107.     '0', '.',
  108.     SPECIAL, /* 0x54 - Alt-SysRq */
  109.     SPECIAL, /* 0x55 - F11/F12/PF1/FN */
  110.     SPECIAL, /* 0x56 - unlabelled key next to LAlt */
  111.     (FUNCTION_KEYS | 11), /* 0x57 - F11 */
  112.     (FUNCTION_KEYS | 12), /* 0x58 - F12 */
  113.     SPECIAL, /* 0x59 */
  114.     SPECIAL, /* 0x5a */
  115.     SPECIAL, /* 0x5b */
  116.     SPECIAL, /* 0x5c */
  117.     SPECIAL, /* 0x5d */
  118.     SPECIAL, /* 0x5e */
  119.     SPECIAL, /* 0x5f */
  120.     SPECIAL, /* 0x60 */
  121.     SPECIAL, /* 0x61 */
  122.     SPECIAL, /* 0x62 */
  123.     SPECIAL, /* 0x63 */
  124.     SPECIAL, /* 0x64 */
  125.     SPECIAL, /* 0x65 */
  126.     SPECIAL, /* 0x66 */
  127.     SPECIAL, /* 0x67 */
  128.     SPECIAL, /* 0x68 */
  129.     SPECIAL, /* 0x69 */
  130.     SPECIAL, /* 0x6a */
  131.     SPECIAL, /* 0x6b */
  132.     SPECIAL, /* 0x6c */
  133.     SPECIAL, /* 0x6d */
  134.     SPECIAL, /* 0x6e */
  135.     SPECIAL, /* 0x6f */
  136.     SPECIAL, /* 0x70 */
  137.     SPECIAL, /* 0x71 */
  138.     SPECIAL, /* 0x72 */
  139.     SPECIAL, /* 0x73 */
  140.     SPECIAL, /* 0x74 */
  141.     SPECIAL, /* 0x75 */
  142.     SPECIAL, /* 0x76 */
  143.     SPECIAL, /* 0x77 */
  144.     SPECIAL, /* 0x78 */
  145.     SPECIAL, /* 0x79 */
  146.     SPECIAL, /* 0x7a */
  147.     SPECIAL, /* 0x7b */
  148.     SPECIAL, /* 0x7c */
  149.     SPECIAL, /* 0x7d */
  150.     SPECIAL, /* 0x7e */
  151.     SPECIAL, /* 0x7f */
  152. };
  153.  
  154. /** Secondary meaning of scancodes. */
  155. static int sc_secondary_map[] = {
  156.     SPECIAL, /* 0x00 */
  157.     0x1b, /* 0x01 - Esc */
  158.     '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
  159.     SPECIAL, /* 0x0e - Backspace */
  160.     '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
  161.     SPECIAL, /* 0x1d - LCtrl */
  162.     'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
  163.     '~',
  164.     SPECIAL, /* 0x2a - LShift */
  165.     '|',
  166.     'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
  167.     SPECIAL, /* 0x36 - RShift */
  168.     '*',
  169.     SPECIAL, /* 0x38 - LAlt */
  170.     ' ',
  171.     SPECIAL, /* 0x3a - CapsLock */
  172.     SPECIAL, /* 0x3b - F1 */
  173.     SPECIAL, /* 0x3c - F2 */
  174.     SPECIAL, /* 0x3d - F3 */
  175.     SPECIAL, /* 0x3e - F4 */
  176.     SPECIAL, /* 0x3f - F5 */
  177.     SPECIAL, /* 0x40 - F6 */
  178.     SPECIAL, /* 0x41 - F7 */
  179.     SPECIAL, /* 0x42 - F8 */
  180.     SPECIAL, /* 0x43 - F9 */
  181.     SPECIAL, /* 0x44 - F10 */
  182.     SPECIAL, /* 0x45 - NumLock */
  183.     SPECIAL, /* 0x46 - ScrollLock */
  184.     '7', '8', '9', '-',
  185.     '4', '5', '6', '+',
  186.     '1', '2', '3',
  187.     '0', '.',
  188.     SPECIAL, /* 0x54 - Alt-SysRq */
  189.     SPECIAL, /* 0x55 - F11/F12/PF1/FN */
  190.     SPECIAL, /* 0x56 - unlabelled key next to LAlt */
  191.     SPECIAL, /* 0x57 - F11 */
  192.     SPECIAL, /* 0x58 - F12 */
  193.     SPECIAL, /* 0x59 */
  194.     SPECIAL, /* 0x5a */
  195.     SPECIAL, /* 0x5b */
  196.     SPECIAL, /* 0x5c */
  197.     SPECIAL, /* 0x5d */
  198.     SPECIAL, /* 0x5e */
  199.     SPECIAL, /* 0x5f */
  200.     SPECIAL, /* 0x60 */
  201.     SPECIAL, /* 0x61 */
  202.     SPECIAL, /* 0x62 */
  203.     SPECIAL, /* 0x63 */
  204.     SPECIAL, /* 0x64 */
  205.     SPECIAL, /* 0x65 */
  206.     SPECIAL, /* 0x66 */
  207.     SPECIAL, /* 0x67 */
  208.     SPECIAL, /* 0x68 */
  209.     SPECIAL, /* 0x69 */
  210.     SPECIAL, /* 0x6a */
  211.     SPECIAL, /* 0x6b */
  212.     SPECIAL, /* 0x6c */
  213.     SPECIAL, /* 0x6d */
  214.     SPECIAL, /* 0x6e */
  215.     SPECIAL, /* 0x6f */
  216.     SPECIAL, /* 0x70 */
  217.     SPECIAL, /* 0x71 */
  218.     SPECIAL, /* 0x72 */
  219.     SPECIAL, /* 0x73 */
  220.     SPECIAL, /* 0x74 */
  221.     SPECIAL, /* 0x75 */
  222.     SPECIAL, /* 0x76 */
  223.     SPECIAL, /* 0x77 */
  224.     SPECIAL, /* 0x78 */
  225.     SPECIAL, /* 0x79 */
  226.     SPECIAL, /* 0x7a */
  227.     SPECIAL, /* 0x7b */
  228.     SPECIAL, /* 0x7c */
  229.     SPECIAL, /* 0x7d */
  230.     SPECIAL, /* 0x7e */
  231.     SPECIAL, /* 0x7f */
  232. };
  233.  
  234. irq_cmd_t i8042_cmds[1] = {
  235.     { CMD_PORT_READ_1, (void *)0x60, 0 }
  236. };
  237.  
  238. irq_code_t i8042_kbd = {
  239.     1,
  240.     i8042_cmds
  241. };
  242.  
  243. static int key_released(keybuffer_t *keybuffer, unsigned char key)
  244. {
  245.     switch (key) {
  246.         case SC_LSHIFT:
  247.         case SC_RSHIFT:
  248.             keyflags &= ~PRESSED_SHIFT;
  249.             break;
  250.         case SC_CAPSLOCK:
  251.             keyflags &= ~PRESSED_CAPSLOCK;
  252.             if (lockflags & LOCKED_CAPSLOCK)
  253.                 lockflags &= ~LOCKED_CAPSLOCK;
  254.                 else
  255.                 lockflags |= LOCKED_CAPSLOCK;
  256.             break;
  257.         default:
  258.             break;
  259.     }
  260. }
  261.  
  262. static int key_pressed(keybuffer_t *keybuffer, unsigned char key)
  263. {
  264.     int *map = sc_primary_map;
  265.     int ascii = sc_primary_map[key];
  266.     int shift, capslock;
  267.     int letter = 0;
  268.  
  269.     static int esc_count=0;
  270.  
  271.    
  272.     if ( key == SC_ESC ) {
  273.         esc_count++;
  274.         if ( esc_count == 3 ) {
  275.             __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
  276.         }  
  277.     } else {
  278.         esc_count=0;
  279.     }
  280.    
  281.    
  282.  
  283.     switch (key) {
  284.         case SC_LSHIFT:
  285.         case SC_RSHIFT:
  286.                 keyflags |= PRESSED_SHIFT;
  287.             break;
  288.         case SC_CAPSLOCK:
  289.             keyflags |= PRESSED_CAPSLOCK;
  290.             break;
  291.         case SC_SPEC_ESCAPE:
  292.             break;
  293.     /*  case SC_LEFTARR:
  294.             if (keybuffer_available(keybuffer) >= 3) {
  295.                 keybuffer_push(keybuffer, 0x1b);   
  296.                 keybuffer_push(keybuffer, 0x5b);   
  297.                 keybuffer_push(keybuffer, 0x44);   
  298.             }
  299.             break;
  300.         case SC_RIGHTARR:
  301.             if (keybuffer_available(keybuffer) >= 3) {
  302.                 keybuffer_push(keybuffer, 0x1b);   
  303.                 keybuffer_push(keybuffer, 0x5b);   
  304.                 keybuffer_push(keybuffer, 0x43);   
  305.             }
  306.             break;
  307.         case SC_UPARR:
  308.             if (keybuffer_available(keybuffer) >= 3) {
  309.                 keybuffer_push(keybuffer, 0x1b);   
  310.                 keybuffer_push(keybuffer, 0x5b);   
  311.                 keybuffer_push(keybuffer, 0x41);   
  312.             }
  313.             break;
  314.         case SC_DOWNARR:
  315.             if (keybuffer_available(keybuffer) >= 3) {
  316.                 keybuffer_push(keybuffer, 0x1b);   
  317.                 keybuffer_push(keybuffer, 0x5b);   
  318.                 keybuffer_push(keybuffer, 0x42);   
  319.             }
  320.             break;
  321.         case SC_HOME:
  322.             if (keybuffer_available(keybuffer) >= 3) {
  323.                 keybuffer_push(keybuffer, 0x1b);   
  324.                 keybuffer_push(keybuffer, 0x4f);   
  325.                 keybuffer_push(keybuffer, 0x48);   
  326.             }
  327.             break;
  328.         case SC_END:
  329.             if (keybuffer_available(keybuffer) >= 3) {
  330.                 keybuffer_push(keybuffer, 0x1b);   
  331.                 keybuffer_push(keybuffer, 0x4f);   
  332.                 keybuffer_push(keybuffer, 0x46);   
  333.             }
  334.             break;
  335.         case SC_DELETE:
  336.             if (keybuffer_available(keybuffer) >= 4) {
  337.                 keybuffer_push(keybuffer, 0x1b);   
  338.                 keybuffer_push(keybuffer, 0x5b);   
  339.                 keybuffer_push(keybuffer, 0x33);   
  340.                 keybuffer_push(keybuffer, 0x7e);   
  341.             }
  342.             break;
  343.     */  default:
  344.                 letter = ((ascii >= 'a') && (ascii <= 'z'));
  345.             capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
  346.             shift = keyflags & PRESSED_SHIFT;
  347.             if (letter && capslock)
  348.                 shift = !shift;
  349.             if (shift)
  350.                 map = sc_secondary_map;
  351.             if (map[key] != SPECIAL)
  352.                 keybuffer_push(keybuffer, map[key]);   
  353.             break;
  354.     }
  355. }
  356.  
  357. /** Register uspace irq handler
  358.  * @return
  359.  */
  360. int kbd_arch_init(void)
  361. {
  362.     return !(ipc_register_irq(1, &i8042_kbd));
  363. }
  364.  
  365. int kbd_arch_process(keybuffer_t *keybuffer, int scan_code)
  366. {
  367.     if (scan_code != IGNORE_CODE) {
  368.         if (scan_code & KEY_RELEASE)
  369.             key_released(keybuffer, scan_code ^ KEY_RELEASE);
  370.         else
  371.             key_pressed(keybuffer, scan_code);
  372.     }
  373.     return  1;
  374. }
  375.  
  376. /**
  377.  * @}
  378.  */
  379.  
  380.