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3661 vana 1 
/*
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 * Copyright (c) 2001-2004 Jakub Jermar
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 * Copyright (c) 2006 Josef Cejka
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup kbdia64 ia64
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 * @brief   HelenOS ia64
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 * @ingroup  kbd
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 * @{
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 */
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/** @file
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 * @ingroup kbdia64
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 */
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#include <arch/lkbd.h>
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#include <ipc/ipc.h>
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#include <unistd.h>
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#include <kbd.h>
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#include <keys.h>
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#include <genarch/kbd.h>
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#include <sysinfo.h>
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/* Interesting bits for status register */
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#define i8042_OUTPUT_FULL  0x1
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#define i8042_INPUT_FULL   0x2
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#define i8042_MOUSE_DATA   0x20
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/* Command constants */
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#define i8042_CMD_KBD 0x60
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#define i8042_CMD_MOUSE  0xd4
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/* Keyboard cmd byte */
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#define i8042_KBD_IE        0x1
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#define i8042_MOUSE_IE      0x2
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#define i8042_KBD_DISABLE   0x10
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#define i8042_MOUSE_DISABLE 0x20
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#define i8042_KBD_TRANSLATE 0x40
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/* Mouse constants */
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#define MOUSE_OUT_INIT  0xf4
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#define MOUSE_ACK       0xfa
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#define KEY_RELEASE 0x80
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static volatile int keyflags;       /**< Tracking of multiple keypresses. */
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static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
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irq_cmd_t i8042_cmds[2] = {
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    { CMD_PORT_READ_1, (void *) 0x64, 0, 1 },
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    { CMD_PORT_READ_1, (void *) 0x60, 0, 2 }
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};
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irq_code_t i8042_kbd = {
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    2,
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    i8042_cmds
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};
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static void wait_ready(void) {
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    while (i8042_status_read() & i8042_INPUT_FULL)
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        ;
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}
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/** Register uspace irq handler
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 * @return
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 */
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int lkbd_arch_init(void)
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{
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    int i;
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    int mouseenabled = 0;
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    iospace_enable(task_get_id(), (void *) i8042_DATA, 5);
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    /* Disable kbd, enable mouse */
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    i8042_command_write(i8042_CMD_KBD);
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    wait_ready();
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    i8042_command_write(i8042_CMD_KBD);
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    wait_ready();
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    i8042_data_write(i8042_KBD_DISABLE);
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    wait_ready();
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    /* Flush all current IO */
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    while (i8042_status_read() & i8042_OUTPUT_FULL)
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        i8042_data_read();
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    /* Initialize mouse */
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    i8042_command_write(i8042_CMD_MOUSE);
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    wait_ready();
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    i8042_data_write(MOUSE_OUT_INIT);
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    wait_ready();
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    int mouseanswer = 0;
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    for (i=0;i < 1000; i++) {
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        int status = i8042_status_read();
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        if (status & i8042_OUTPUT_FULL) {
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            int data = i8042_data_read();
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            if (status & i8042_MOUSE_DATA) {
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                mouseanswer = data;
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                break;
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            }
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        }
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        usleep(1000);
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    }
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    if (mouseanswer == MOUSE_ACK) {
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        /* enable mouse */
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        mouseenabled = 1;
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        ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd);
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    }
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    /* Enable kbd */
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    ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd);
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    int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
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    if (mouseenabled)
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        newcontrol |= i8042_MOUSE_IE;
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    i8042_command_write(i8042_CMD_KBD);
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    wait_ready();
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    i8042_data_write(newcontrol);
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    wait_ready();
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    return 0;
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}
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/** Process keyboard & mouse events */
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int lkbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
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{
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    int status = IPC_GET_ARG1(*call);
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    if ((status & i8042_MOUSE_DATA))
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        return 0;
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    int scan_code = IPC_GET_ARG2(*call);
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    if (scan_code & KEY_RELEASE)
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        key_released(keybuffer, scan_code ^ KEY_RELEASE);
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    else
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        key_pressed(keybuffer, scan_code);
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    return  1;
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}
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/**
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 * @}
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 */