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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 kbdia64 ia64
  31.  * @brief   HelenOS ia64
  32.  * @ingroup  kbd
  33.  * @{
  34.  */
  35. /** @file
  36.  * @ingroup kbdia64
  37.  */
  38.  
  39. #include <arch/lkbd.h>
  40. #include <ipc/ipc.h>
  41. #include <unistd.h>
  42. #include <kbd.h>
  43. #include <keys.h>
  44. #include <genarch/kbd.h>
  45. #include <sysinfo.h>
  46.  
  47. /* Interesting bits for status register */
  48. #define i8042_OUTPUT_FULL  0x1
  49. #define i8042_INPUT_FULL   0x2
  50. #define i8042_MOUSE_DATA   0x20
  51.  
  52. /* Command constants */
  53. #define i8042_CMD_KBD 0x60
  54. #define i8042_CMD_MOUSE  0xd4
  55.  
  56. /* Keyboard cmd byte */
  57. #define i8042_KBD_IE        0x1
  58. #define i8042_MOUSE_IE      0x2
  59. #define i8042_KBD_DISABLE   0x10
  60. #define i8042_MOUSE_DISABLE 0x20
  61. #define i8042_KBD_TRANSLATE 0x40
  62.  
  63. /* Mouse constants */
  64. #define MOUSE_OUT_INIT  0xf4
  65. #define MOUSE_ACK       0xfa
  66.  
  67. #define KEY_RELEASE 0x80
  68.  
  69. static volatile int keyflags;       /**< Tracking of multiple keypresses. */
  70. static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
  71.  
  72. irq_cmd_t i8042_cmds[2] = {
  73.     { CMD_PORT_READ_1, (void *) 0x64, 0, 1 },
  74.     { CMD_PORT_READ_1, (void *) 0x60, 0, 2 }
  75. };
  76.  
  77. irq_code_t i8042_kbd = {
  78.     2,
  79.     i8042_cmds
  80. };
  81.  
  82. static void wait_ready(void) {
  83.     while (i8042_status_read() & i8042_INPUT_FULL)
  84.         ;
  85. }
  86.  
  87. /** Register uspace irq handler
  88.  * @return
  89.  */
  90. int lkbd_arch_init(void)
  91. {
  92.     int i;
  93.     int mouseenabled = 0;
  94.  
  95.     iospace_enable(task_get_id(), (void *) i8042_DATA, 5);
  96.     /* Disable kbd, enable mouse */
  97.     i8042_command_write(i8042_CMD_KBD);
  98.     wait_ready();
  99.     i8042_command_write(i8042_CMD_KBD);
  100.     wait_ready();
  101.     i8042_data_write(i8042_KBD_DISABLE);
  102.     wait_ready();
  103.  
  104.     /* Flush all current IO */
  105.     while (i8042_status_read() & i8042_OUTPUT_FULL)
  106.         i8042_data_read();
  107.    
  108.     /* Initialize mouse */
  109.     i8042_command_write(i8042_CMD_MOUSE);
  110.     wait_ready();
  111.     i8042_data_write(MOUSE_OUT_INIT);
  112.     wait_ready();
  113.    
  114.     int mouseanswer = 0;
  115.     for (i=0;i < 1000; i++) {
  116.         int status = i8042_status_read();
  117.         if (status & i8042_OUTPUT_FULL) {
  118.             int data = i8042_data_read();
  119.             if (status & i8042_MOUSE_DATA) {
  120.                 mouseanswer = data;
  121.                 break;
  122.             }
  123.         }
  124.         usleep(1000);
  125.     }
  126.     if (mouseanswer == MOUSE_ACK) {
  127.         /* enable mouse */
  128.         mouseenabled = 1;
  129.        
  130.         ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);
  131.     }
  132.     /* Enable kbd */
  133.     ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
  134.  
  135.     int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
  136.     if (mouseenabled)
  137.         newcontrol |= i8042_MOUSE_IE;
  138.    
  139.     i8042_command_write(i8042_CMD_KBD);
  140.     wait_ready();
  141.     i8042_data_write(newcontrol);
  142.     wait_ready();
  143.    
  144.     return 0;
  145. }
  146.  
  147. /** Process keyboard & mouse events */
  148. int lkbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
  149. {
  150.     int status = IPC_GET_ARG1(*call);
  151.  
  152.     if ((status & i8042_MOUSE_DATA))
  153.         return 0;
  154.    
  155.     int scan_code = IPC_GET_ARG2(*call);
  156.    
  157.     if (scan_code & KEY_RELEASE)
  158.         key_released(keybuffer, scan_code ^ KEY_RELEASE);
  159.     else
  160.         key_pressed(keybuffer, scan_code);
  161.     return  1;
  162. }
  163.  
  164. /**
  165.  * @}
  166.  */
  167.