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  1. /*
  2.  * Copyright (c) 2009 Vineeth Pillai
  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.  * @ingroup kbd
  31.  * @{
  32.  */
  33. /** @file
  34.  * @brief pl050 port driver.
  35.  */
  36.  
  37. #include <ddi.h>
  38. #include <libarch/ddi.h>
  39. #include <ipc/ipc.h>
  40. #include <async.h>
  41. #include <unistd.h>
  42. #include <sysinfo.h>
  43. #include <kbd_port.h>
  44. #include <kbd.h>
  45. #include <ddi.h>
  46. #include <stdio.h>
  47.  
  48. #define PL050_STAT_RXFULL (1 << 4)
  49. static irq_cmd_t pl050_cmds[] = {
  50.     {
  51.         .cmd = CMD_PIO_READ_8,
  52.         .addr = NULL,
  53.         .dstarg = 1
  54.     },
  55.     {
  56.         .cmd = CMD_BTEST,
  57.         .value = PL050_STAT_RXFULL,
  58.         .srcarg = 1,
  59.         .dstarg = 3
  60.     },
  61.     {
  62.         .cmd = CMD_PREDICATE,
  63.         .value = 2,
  64.         .srcarg = 3
  65.     },
  66.     {
  67.         .cmd = CMD_PIO_READ_8,
  68.         .addr = NULL,   /* will be patched in run-time */
  69.         .dstarg = 2
  70.     },
  71.     {
  72.         .cmd = CMD_ACCEPT
  73.     }
  74. };
  75.  
  76. static irq_code_t pl050_kbd = {
  77.     sizeof(pl050_cmds) / sizeof(irq_cmd_t),
  78.     pl050_cmds
  79. };
  80.  
  81. static void pl050_irq_handler(ipc_callid_t iid, ipc_call_t *call);
  82.  
  83. int kbd_port_init(void)
  84. {
  85.  
  86.     pl050_kbd.cmds[0].addr = (void *) sysinfo_value("kbd.address.status");
  87.     pl050_kbd.cmds[3].addr = (void *) sysinfo_value("kbd.address.data");
  88.  
  89.     async_set_interrupt_received(pl050_irq_handler);
  90.  
  91.     ipc_register_irq(sysinfo_value("kbd.inr"), device_assign_devno(), 0, &pl050_kbd);
  92.  
  93.     return 0;
  94. }
  95.  
  96. void kbd_port_yield(void)
  97. {
  98. }
  99.  
  100. void kbd_port_reclaim(void)
  101. {
  102. }
  103.  
  104. static void pl050_irq_handler(ipc_callid_t iid, ipc_call_t *call)
  105. {
  106.     int scan_code = IPC_GET_ARG2(*call);
  107.  
  108.     kbd_push_scancode(scan_code);
  109.     return;
  110. }
  111.  
  112. /**
  113.  * @}
  114.  */
  115.