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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.     /* Initialize arch dependent parts */
  55.     if (!(res = kbd_arch_init())) {
  56.             return -1;
  57.             };
  58.    
  59.     /* Initialize key buffer */
  60.     keybuffer_init(&keybuffer);
  61.    
  62.     /* Register service at nameserver */
  63.    
  64.     if ((res = ipc_connect_to_me(PHONE_NS, SERVICE_KEYBOARD, 0, &phonead)) != 0) {
  65.         return -1;
  66.     };
  67.    
  68.     while (1) {
  69.         callid = ipc_wait_for_call(&call);
  70.         switch (IPC_GET_METHOD(call)) {
  71.             case IPC_M_PHONE_HUNGUP:
  72.                 connected = 0;
  73.                 retval = 0;
  74.                 break;
  75.             case IPC_M_CONNECT_ME_TO:
  76.                 /* Only one connected client allowed */
  77.                 if (connected) {
  78.                     retval = ELIMIT;
  79.                 } else {
  80.                     retval = 0;
  81.                     connected = 1;
  82.                 }
  83.                 break;
  84.             case IPC_M_CONNECT_TO_ME:
  85.                 phoneid = IPC_GET_ARG3(call);
  86.                 retval = 0;
  87.                 break;
  88.  
  89.             case IPC_M_INTERRUPT:
  90.                 if (connected) {
  91.                     /* recode to ASCII - one interrupt can produce more than one code so result is stored in fifo */
  92.                     kbd_arch_process(&keybuffer, IPC_GET_ARG2(call));
  93.  
  94.                     retval = 0;
  95.  
  96.                     while (!keybuffer_empty(&keybuffer)) {
  97.                         if (!keybuffer_pop(&keybuffer, (char *)&arg1)) {
  98.                             break;
  99.                         }
  100.                         ipc_call_async(phoneid, KBD_PUSHCHAR, arg1, NULL, NULL);
  101.                     }
  102.  
  103.                 }
  104.                 break;
  105.             default:
  106.                 retval = ENOENT;
  107.                 break;
  108.         }
  109.  
  110.         if (! (callid & IPC_CALLID_NOTIFICATION)) {
  111.             ipc_answer_fast(callid, retval, arg1, arg2);
  112.         }
  113.     }
  114. }
  115.  
  116.