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  1. /*
  2.  * Copyright (C) 2006 Josef Cejka
  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. #include <ipc/ipc.h>
  30. #include <ipc/services.h>
  31. #include <stdio.h>
  32. #include <unistd.h>
  33. #include <stdlib.h>
  34. #include <ipc/ns.h>
  35. #include <errno.h>
  36. #include <arch/kbd.h>
  37. #include <kbd.h>
  38. #include <libadt/fifo.h>
  39. #include <key_buffer.h>
  40.  
  41. #define NAME "KBD"
  42.  
  43. int main(int argc, char **argv)
  44. {
  45.     ipc_call_t call;
  46.     ipc_callid_t callid;
  47.     int res;
  48.     ipcarg_t phonead;
  49.     int phoneid;
  50.     char connected = 0;
  51.     keybuffer_t keybuffer; 
  52.     ipcarg_t retval, arg1, arg2;
  53.  
  54. //  printf("Uspace kbd service started.\n");
  55.  
  56.     /* Initialize arch dependent parts */
  57.     if (!(res = kbd_arch_init())) {
  58. //          printf("Kbd registration failed with retval %d.\n", res);
  59.             return -1;
  60.             };
  61.    
  62.     /* Initialize key buffer */
  63.     keybuffer_init(&keybuffer);
  64.    
  65.     /* Register service at nameserver */
  66. //  printf("%s: Registering at naming service.\n", NAME);
  67.  
  68.     if ((res = ipc_connect_to_me(PHONE_NS, SERVICE_KEYBOARD, 0, &phonead)) != 0) {
  69. //      printf("%s: Error: Registering at naming service failed.\n", NAME);
  70.         return -1;
  71.     };
  72.    
  73.     while (1) {
  74.         callid = ipc_wait_for_call(&call);
  75.     //  printf("%s:Call phone=%lX..", NAME, call.in_phone_hash);
  76.         switch (IPC_GET_METHOD(call)) {
  77.             case IPC_M_PHONE_HUNGUP:
  78. //              printf("%s: Phone hung up.\n", NAME);
  79.                 connected = 0;
  80.                 retval = 0;
  81.                 break;
  82.             case IPC_M_CONNECT_ME_TO:
  83.             //  printf("%s: Connect me (%P) to: %zd\n",NAME, IPC_GET_ARG3(call), IPC_GET_ARG1(call));
  84.                 /* Only one connected client allowed */
  85.                 if (connected) {
  86.                     retval = ELIMIT;
  87.                 } else {
  88.                     retval = 0;
  89.                     connected = 1;
  90.                 }
  91.                 break;
  92.             case IPC_M_CONNECT_TO_ME:
  93.                 phoneid = IPC_GET_ARG3(call);
  94.                 retval = 0;
  95.                 break;
  96.  
  97.             case IPC_M_INTERRUPT:
  98.                 if (connected) {
  99.                     /* recode to ASCII - one interrupt can produce more than one code so result is stored in fifo */
  100.                     kbd_arch_process(&keybuffer, IPC_GET_ARG2(call));
  101.  
  102.                     //printf("%s: GOT INTERRUPT: %c\n", NAME, key);
  103.  
  104.                     /* Some callers could awaiting keypress - if its true, we have to send keys to them.
  105.                      * One interrupt can store more than one key into buffer. */
  106.                    
  107.                     retval = 0;
  108.  
  109.                     while (!keybuffer_empty(&keybuffer)) {
  110.                         if (!keybuffer_pop(&keybuffer, (char *)&arg1)) {
  111. //                          printf("%s: KeyBuffer is empty but it should not be.\n");
  112.                             break;
  113.                         }
  114.                         /*FIXME: detection of closed connection */
  115.                         ipc_call_async(phoneid, KBD_PUSHCHAR, arg1, NULL, NULL);
  116.                     }
  117.  
  118.                 }
  119. //              printf("%s: Interrupt processed.\n", NAME);
  120.                 break;
  121.             default:
  122. //              printf("%s: Unknown method: %zd\n", NAME, IPC_GET_METHOD(call));
  123.                 retval = ENOENT;
  124.                 break;
  125.         }
  126.  
  127.         if (! (callid & IPC_CALLID_NOTIFICATION)) {
  128.             ipc_answer_fast(callid, retval, arg1, arg2);
  129.         }
  130.     }
  131. }
  132.  
  133.