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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. #include <unistd.h>
  42. #include <kbd.h>
  43. #include <keys.h>
  44.  
  45. /* Interesting bits for status register */
  46. #define i8042_OUTPUT_FULL  0x1
  47. #define i8042_INPUT_FULL   0x2
  48. #define i8042_MOUSE_DATA   0x20
  49.  
  50. /* Command constants */
  51. #define i8042_CMD_KBD 0x60
  52. #define i8042_CMD_MOUSE  0xd4
  53.  
  54. /* Keyboard cmd byte */
  55. #define i8042_KBD_IE        0x1
  56. #define i8042_MOUSE_IE      0x2
  57. #define i8042_KBD_DISABLE   0x10
  58. #define i8042_MOUSE_DISABLE 0x20
  59. #define i8042_KBD_TRANSLATE 0x40
  60.  
  61. /* Mouse constants */
  62. #define MOUSE_OUT_INIT  0xf4
  63. #define MOUSE_ACK       0xfa
  64.  
  65.  
  66. #define SPECIAL     255
  67. #define KEY_RELEASE 0x80
  68.  
  69. /**
  70.  * These codes read from i8042 data register are silently ignored.
  71.  */
  72. #define IGNORE_CODE 0x7f
  73.  
  74. #define PRESSED_SHIFT       (1<<0)
  75. #define PRESSED_CAPSLOCK    (1<<1)
  76. #define LOCKED_CAPSLOCK     (1<<0)
  77.  
  78. /** Scancodes. */
  79. #define SC_ESC      0x01
  80. #define SC_BACKSPACE    0x0e
  81. #define SC_LSHIFT   0x2a
  82. #define SC_RSHIFT   0x36
  83. #define SC_CAPSLOCK 0x3a
  84. #define SC_SPEC_ESCAPE  0xe0
  85. #define SC_LEFTARR      0x4b
  86. #define SC_RIGHTARR     0x4d
  87. #define SC_UPARR        0x48
  88. #define SC_DOWNARR      0x50
  89. #define SC_DELETE       0x53
  90. #define SC_HOME         0x47
  91. #define SC_END          0x4f
  92.  
  93. #define FUNCTION_KEYS 0x100
  94.  
  95. static volatile int keyflags;       /**< Tracking of multiple keypresses. */
  96. static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
  97.  
  98. /** Primary meaning of scancodes. */
  99. static int sc_primary_map[] = {
  100.     SPECIAL, /* 0x00 */
  101.     SPECIAL, /* 0x01 - Esc */
  102.     '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
  103.     '\b', /* 0x0e - Backspace */
  104.     '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
  105.     SPECIAL, /* 0x1d - LCtrl */
  106.     'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
  107.     '`',
  108.     SPECIAL, /* 0x2a - LShift */
  109.     '\\',
  110.     'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
  111.     SPECIAL, /* 0x36 - RShift */
  112.     '*',
  113.     SPECIAL, /* 0x38 - LAlt */
  114.     ' ',
  115.     SPECIAL, /* 0x3a - CapsLock */
  116.     (FUNCTION_KEYS | 1), /* 0x3b - F1 */
  117.     (FUNCTION_KEYS | 2), /* 0x3c - F2 */
  118.     (FUNCTION_KEYS | 3), /* 0x3d - F3 */
  119.     (FUNCTION_KEYS | 4), /* 0x3e - F4 */
  120.     (FUNCTION_KEYS | 5), /* 0x3f - F5 */
  121.     (FUNCTION_KEYS | 6), /* 0x40 - F6 */
  122.     (FUNCTION_KEYS | 7), /* 0x41 - F7 */
  123.     (FUNCTION_KEYS | 8), /* 0x42 - F8 */
  124.     (FUNCTION_KEYS | 9), /* 0x43 - F9 */
  125.     (FUNCTION_KEYS | 10), /* 0x44 - F10 */
  126.     SPECIAL, /* 0x45 - NumLock */
  127.     SPECIAL, /* 0x46 - ScrollLock */
  128.     '7', '8', '9', '-',
  129.     '4', '5', '6', '+',
  130.     '1', '2', '3',
  131.     '0', '.',
  132.     SPECIAL, /* 0x54 - Alt-SysRq */
  133.     SPECIAL, /* 0x55 - F11/F12/PF1/FN */
  134.     SPECIAL, /* 0x56 - unlabelled key next to LAlt */
  135.     (FUNCTION_KEYS | 11), /* 0x57 - F11 */
  136.     (FUNCTION_KEYS | 12), /* 0x58 - F12 */
  137.     SPECIAL, /* 0x59 */
  138.     SPECIAL, /* 0x5a */
  139.     SPECIAL, /* 0x5b */
  140.     SPECIAL, /* 0x5c */
  141.     SPECIAL, /* 0x5d */
  142.     SPECIAL, /* 0x5e */
  143.     SPECIAL, /* 0x5f */
  144.     SPECIAL, /* 0x60 */
  145.     SPECIAL, /* 0x61 */
  146.     SPECIAL, /* 0x62 */
  147.     SPECIAL, /* 0x63 */
  148.     SPECIAL, /* 0x64 */
  149.     SPECIAL, /* 0x65 */
  150.     SPECIAL, /* 0x66 */
  151.     SPECIAL, /* 0x67 */
  152.     SPECIAL, /* 0x68 */
  153.     SPECIAL, /* 0x69 */
  154.     SPECIAL, /* 0x6a */
  155.     SPECIAL, /* 0x6b */
  156.     SPECIAL, /* 0x6c */
  157.     SPECIAL, /* 0x6d */
  158.     SPECIAL, /* 0x6e */
  159.     SPECIAL, /* 0x6f */
  160.     SPECIAL, /* 0x70 */
  161.     SPECIAL, /* 0x71 */
  162.     SPECIAL, /* 0x72 */
  163.     SPECIAL, /* 0x73 */
  164.     SPECIAL, /* 0x74 */
  165.     SPECIAL, /* 0x75 */
  166.     SPECIAL, /* 0x76 */
  167.     SPECIAL, /* 0x77 */
  168.     SPECIAL, /* 0x78 */
  169.     SPECIAL, /* 0x79 */
  170.     SPECIAL, /* 0x7a */
  171.     SPECIAL, /* 0x7b */
  172.     SPECIAL, /* 0x7c */
  173.     SPECIAL, /* 0x7d */
  174.     SPECIAL, /* 0x7e */
  175.     SPECIAL, /* 0x7f */
  176. };
  177.  
  178. /** Secondary meaning of scancodes. */
  179. static int sc_secondary_map[] = {
  180.     SPECIAL, /* 0x00 */
  181.     0x1b, /* 0x01 - Esc */
  182.     '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
  183.     SPECIAL, /* 0x0e - Backspace */
  184.     '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
  185.     SPECIAL, /* 0x1d - LCtrl */
  186.     'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
  187.     '~',
  188.     SPECIAL, /* 0x2a - LShift */
  189.     '|',
  190.     'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
  191.     SPECIAL, /* 0x36 - RShift */
  192.     '*',
  193.     SPECIAL, /* 0x38 - LAlt */
  194.     ' ',
  195.     SPECIAL, /* 0x3a - CapsLock */
  196.     SPECIAL, /* 0x3b - F1 */
  197.     SPECIAL, /* 0x3c - F2 */
  198.     SPECIAL, /* 0x3d - F3 */
  199.     SPECIAL, /* 0x3e - F4 */
  200.     SPECIAL, /* 0x3f - F5 */
  201.     SPECIAL, /* 0x40 - F6 */
  202.     SPECIAL, /* 0x41 - F7 */
  203.     SPECIAL, /* 0x42 - F8 */
  204.     SPECIAL, /* 0x43 - F9 */
  205.     SPECIAL, /* 0x44 - F10 */
  206.     SPECIAL, /* 0x45 - NumLock */
  207.     SPECIAL, /* 0x46 - ScrollLock */
  208.     '7', '8', '9', '-',
  209.     '4', '5', '6', '+',
  210.     '1', '2', '3',
  211.     '0', '.',
  212.     SPECIAL, /* 0x54 - Alt-SysRq */
  213.     SPECIAL, /* 0x55 - F11/F12/PF1/FN */
  214.     SPECIAL, /* 0x56 - unlabelled key next to LAlt */
  215.     SPECIAL, /* 0x57 - F11 */
  216.     SPECIAL, /* 0x58 - F12 */
  217.     SPECIAL, /* 0x59 */
  218.     SPECIAL, /* 0x5a */
  219.     SPECIAL, /* 0x5b */
  220.     SPECIAL, /* 0x5c */
  221.     SPECIAL, /* 0x5d */
  222.     SPECIAL, /* 0x5e */
  223.     SPECIAL, /* 0x5f */
  224.     SPECIAL, /* 0x60 */
  225.     SPECIAL, /* 0x61 */
  226.     SPECIAL, /* 0x62 */
  227.     SPECIAL, /* 0x63 */
  228.     SPECIAL, /* 0x64 */
  229.     SPECIAL, /* 0x65 */
  230.     SPECIAL, /* 0x66 */
  231.     SPECIAL, /* 0x67 */
  232.     SPECIAL, /* 0x68 */
  233.     SPECIAL, /* 0x69 */
  234.     SPECIAL, /* 0x6a */
  235.     SPECIAL, /* 0x6b */
  236.     SPECIAL, /* 0x6c */
  237.     SPECIAL, /* 0x6d */
  238.     SPECIAL, /* 0x6e */
  239.     SPECIAL, /* 0x6f */
  240.     SPECIAL, /* 0x70 */
  241.     SPECIAL, /* 0x71 */
  242.     SPECIAL, /* 0x72 */
  243.     SPECIAL, /* 0x73 */
  244.     SPECIAL, /* 0x74 */
  245.     SPECIAL, /* 0x75 */
  246.     SPECIAL, /* 0x76 */
  247.     SPECIAL, /* 0x77 */
  248.     SPECIAL, /* 0x78 */
  249.     SPECIAL, /* 0x79 */
  250.     SPECIAL, /* 0x7a */
  251.     SPECIAL, /* 0x7b */
  252.     SPECIAL, /* 0x7c */
  253.     SPECIAL, /* 0x7d */
  254.     SPECIAL, /* 0x7e */
  255.     SPECIAL, /* 0x7f */
  256. };
  257.  
  258. irq_cmd_t i8042_cmds[2] = {
  259.     { CMD_PORT_READ_1, (void *)0x64, 0, 1 },
  260.     { CMD_PORT_READ_1, (void *)0x60, 0, 2 }
  261. };
  262.  
  263. irq_code_t i8042_kbd = {
  264.     2,
  265.     i8042_cmds
  266. };
  267.  
  268. static void key_released(keybuffer_t *keybuffer, unsigned char key)
  269. {
  270.     switch (key) {
  271.         case SC_LSHIFT:
  272.         case SC_RSHIFT:
  273.             keyflags &= ~PRESSED_SHIFT;
  274.             break;
  275.         case SC_CAPSLOCK:
  276.             keyflags &= ~PRESSED_CAPSLOCK;
  277.             if (lockflags & LOCKED_CAPSLOCK)
  278.                 lockflags &= ~LOCKED_CAPSLOCK;
  279.                 else
  280.                 lockflags |= LOCKED_CAPSLOCK;
  281.             break;
  282.         default:
  283.             break;
  284.     }
  285. }
  286.  
  287. static void key_pressed(keybuffer_t *keybuffer, unsigned char key)
  288. {
  289.     int *map = sc_primary_map;
  290.     int ascii = sc_primary_map[key];
  291.     int shift, capslock;
  292.     int letter = 0;
  293.  
  294.     static int esc_count=0;
  295.  
  296.    
  297.     if ( key == SC_ESC ) {
  298.         esc_count++;
  299.         if ( esc_count == 3 ) {
  300.             __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
  301.         }  
  302.     } else {
  303.         esc_count=0;
  304.     }
  305.    
  306.    
  307.  
  308.     switch (key) {
  309.         case SC_LSHIFT:
  310.         case SC_RSHIFT:
  311.                 keyflags |= PRESSED_SHIFT;
  312.             break;
  313.         case SC_CAPSLOCK:
  314.             keyflags |= PRESSED_CAPSLOCK;
  315.             break;
  316.         case SC_SPEC_ESCAPE:
  317.             break;
  318.     /*  case SC_LEFTARR:
  319.             if (keybuffer_available(keybuffer) >= 3) {
  320.                 keybuffer_push(keybuffer, 0x1b);   
  321.                 keybuffer_push(keybuffer, 0x5b);   
  322.                 keybuffer_push(keybuffer, 0x44);   
  323.             }
  324.             break;
  325.         case SC_RIGHTARR:
  326.             if (keybuffer_available(keybuffer) >= 3) {
  327.                 keybuffer_push(keybuffer, 0x1b);   
  328.                 keybuffer_push(keybuffer, 0x5b);   
  329.                 keybuffer_push(keybuffer, 0x43);   
  330.             }
  331.             break;
  332.         case SC_UPARR:
  333.             if (keybuffer_available(keybuffer) >= 3) {
  334.                 keybuffer_push(keybuffer, 0x1b);   
  335.                 keybuffer_push(keybuffer, 0x5b);   
  336.                 keybuffer_push(keybuffer, 0x41);   
  337.             }
  338.             break;
  339.         case SC_DOWNARR:
  340.             if (keybuffer_available(keybuffer) >= 3) {
  341.                 keybuffer_push(keybuffer, 0x1b);   
  342.                 keybuffer_push(keybuffer, 0x5b);   
  343.                 keybuffer_push(keybuffer, 0x42);   
  344.             }
  345.             break;
  346.         case SC_HOME:
  347.             if (keybuffer_available(keybuffer) >= 3) {
  348.                 keybuffer_push(keybuffer, 0x1b);   
  349.                 keybuffer_push(keybuffer, 0x4f);   
  350.                 keybuffer_push(keybuffer, 0x48);   
  351.             }
  352.             break;
  353.         case SC_END:
  354.             if (keybuffer_available(keybuffer) >= 3) {
  355.                 keybuffer_push(keybuffer, 0x1b);   
  356.                 keybuffer_push(keybuffer, 0x4f);   
  357.                 keybuffer_push(keybuffer, 0x46);   
  358.             }
  359.             break;
  360.         case SC_DELETE:
  361.             if (keybuffer_available(keybuffer) >= 4) {
  362.                 keybuffer_push(keybuffer, 0x1b);   
  363.                 keybuffer_push(keybuffer, 0x5b);   
  364.                 keybuffer_push(keybuffer, 0x33);   
  365.                 keybuffer_push(keybuffer, 0x7e);   
  366.             }
  367.             break;
  368.     */  default:
  369.                 letter = ((ascii >= 'a') && (ascii <= 'z'));
  370.             capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
  371.             shift = keyflags & PRESSED_SHIFT;
  372.             if (letter && capslock)
  373.                 shift = !shift;
  374.             if (shift)
  375.                 map = sc_secondary_map;
  376.             if (map[key] != SPECIAL)
  377.                 keybuffer_push(keybuffer, map[key]);   
  378.             break;
  379.     }
  380. }
  381.  
  382.  
  383. static void wait_ready(void) {
  384.     while (i8042_status_read() & i8042_INPUT_FULL)
  385.         ;
  386. }
  387.  
  388. /** Register uspace irq handler
  389.  * @return
  390.  */
  391. int kbd_arch_init(void)
  392. {
  393.     int i;
  394.     int mouseenabled = 0;
  395.  
  396.     iospace_enable(task_get_id(),(void *)i8042_DATA, 5);
  397.     /* Disable kbd, enable mouse */
  398.     i8042_command_write(i8042_CMD_KBD);
  399.     wait_ready();
  400.     i8042_command_write(i8042_CMD_KBD);
  401.     wait_ready();
  402.     i8042_data_write(i8042_KBD_DISABLE);
  403.     wait_ready();
  404.  
  405.     /* Flush all current IO */
  406.     while (i8042_status_read() & i8042_OUTPUT_FULL)
  407.         i8042_data_read();
  408.     /* Initialize mouse */
  409.     i8042_command_write(i8042_CMD_MOUSE);
  410.     wait_ready();
  411.     i8042_data_write(MOUSE_OUT_INIT);
  412.     wait_ready();
  413.    
  414.     int mouseanswer = 0;
  415.     for (i=0;i < 1000; i++) {
  416.         int status = i8042_status_read();
  417.         if (status & i8042_OUTPUT_FULL) {
  418.             int data = i8042_data_read();
  419.             if (status & i8042_MOUSE_DATA) {
  420.                 mouseanswer = data;
  421.                 break;
  422.             }
  423.         }
  424.         usleep(1000);
  425.     }
  426.     if (mouseanswer == MOUSE_ACK) {
  427.         /* enable mouse */
  428.         mouseenabled = 1;
  429.  
  430.         ipc_register_irq(MOUSE_IRQ, &i8042_kbd);
  431.     }
  432.     /* Enable kbd */
  433.     ipc_register_irq(KBD_IRQ, &i8042_kbd);
  434.     /* Register for irq restart */
  435.     ipc_register_irq(IPC_IRQ_KBDRESTART, NULL);
  436.  
  437.     int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
  438.     if (mouseenabled)
  439.         newcontrol |= i8042_MOUSE_IE;
  440.    
  441.     i8042_command_write(i8042_CMD_KBD);
  442.     wait_ready();
  443.     i8042_data_write(newcontrol);
  444.     wait_ready();
  445.    
  446.     return 0;
  447. }
  448.  
  449. /** Process keyboard & mouse events */
  450. int kbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
  451. {
  452.     int status = IPC_GET_ARG1(*call);
  453.  
  454.     if (IPC_GET_METHOD(*call) == IPC_IRQ_KBDRESTART) {
  455.         kbd_arch_init();
  456.         return 1;
  457.     }
  458.  
  459.     if ((status & i8042_MOUSE_DATA))
  460.         return 0;
  461.    
  462.     int scan_code = IPC_GET_ARG2(*call);
  463.    
  464.     if (scan_code != IGNORE_CODE) {
  465.         if (scan_code & KEY_RELEASE)
  466.             key_released(keybuffer, scan_code ^ KEY_RELEASE);
  467.         else
  468.             key_pressed(keybuffer, scan_code);
  469.     }
  470.     return  1;
  471. }
  472.  
  473. /**
  474.  * @}
  475.  */
  476.  
  477.