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  1. /*
  2.  * Copyright (c) 2007 Michal Kebrt
  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. /** @addtogroup kbd_port
  30.  * @{
  31.  * @ingroup  kbd
  32.  */
  33. /** @file
  34.  * @brief   GXEmul keyboard port driver.
  35.  */
  36.  
  37. #include <ipc/ipc.h>
  38. #include <async.h>
  39. #include <sysinfo.h>
  40. #include <kbd_port.h>
  41. #include <kbd.h>
  42.  
  43. static irq_cmd_t gxemul_cmds[] = {
  44.     {
  45.         .cmd = CMD_PIO_READ_8,
  46.         .addr = (void *) 0,     /* will be patched in run-time */
  47.         .dstarg = 2,
  48.     },
  49.     {
  50.         .cmd = CMD_ACCEPT
  51.     }
  52. };
  53.  
  54. static irq_code_t gxemul_kbd = {
  55.     sizeof(gxemul_cmds) / sizeof(irq_cmd_t),
  56.     gxemul_cmds
  57. };
  58.  
  59. static void gxemul_irq_handler(ipc_callid_t iid, ipc_call_t *call);
  60.  
  61. /** Initializes keyboard handler. */
  62. int kbd_port_init(void)
  63. {
  64.     async_set_interrupt_received(gxemul_irq_handler);
  65.     gxemul_cmds[0].addr = (void *) sysinfo_value("kbd.address.virtual");
  66.     ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),
  67.         0, &gxemul_kbd);
  68.     return 0;
  69. }
  70.  
  71. /** Process data sent when a key is pressed.
  72.  *  
  73.  *  @param keybuffer Buffer of pressed keys.
  74.  *  @param call      IPC call.
  75.  *
  76.  *  @return Always 1.
  77.  */
  78. static void gxemul_irq_handler(ipc_callid_t iid, ipc_call_t *call)
  79. {
  80.     int scan_code = IPC_GET_ARG2(*call);
  81.  
  82.     kbd_push_scancode(scan_code);
  83. }
  84.  
  85. /** @}
  86.  */
  87.