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1 jermar 1
/*
4042 jermar 2
 * Copyright (c) 2009 Jakub Jermar
1 jermar 3
 * 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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1754 jermar 29
/** @addtogroup genarch
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 * @{
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 */
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/**
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 * @file
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 * @brief   Keyboard processing.
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 */
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#include <genarch/kbrd/kbrd.h>
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#include <genarch/kbrd/scanc.h>
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#ifdef CONFIG_PC_KBD
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#include <genarch/kbrd/scanc_pc.h>
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#endif
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#ifdef CONFIG_SUN_KBD
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#include <genarch/kbrd/scanc_sun.h>
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#endif
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#include <synch/spinlock.h>
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#include <console/chardev.h>
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#include <console/console.h>
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#include <proc/thread.h>
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#include <arch.h>
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#include <macros.h>
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#ifdef CONFIG_SUN_KBD
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#   define IGNORE_CODE  0x7f
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#endif
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4042 jermar 59
#define KEY_RELEASE     0x80
878 vana 60
 
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#define PRESSED_SHIFT       (1 << 0)
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#define PRESSED_CAPSLOCK    (1 << 1)
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#define LOCKED_CAPSLOCK     (1 << 0)
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chardev_t kbrdin;
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static chardev_t *kbdout;
878 vana 67
 
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static void kbrdin_suspend(chardev_t *d)
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{
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}
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static void kbrdin_resume(chardev_t *d)
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{
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}
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chardev_operations_t kbrdin_ops = {
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    .suspend = kbrdin_suspend,
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    .resume = kbrdin_resume,
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};
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SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
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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. */
508 jermar 84
 
4042 jermar 85
static void key_released(uint8_t);
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static void key_pressed(uint8_t);
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static void kkbrd(void *arg)
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{
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    chardev_t *in = (chardev_t *) arg;
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    uint8_t sc;
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    while (1) {
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        sc = _getc(in);
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#ifdef CONFIG_SUN_KBD
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        if (sc == IGNORE_CODE)
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            continue;
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#endif
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        if (sc & KEY_RELEASE)
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            key_released(sc ^ KEY_RELEASE);
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        else
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            key_pressed(sc);
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    }
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}
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void kbrd_init(chardev_t *devout)
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{
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    thread_t *t;
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    chardev_initialize("kbrd", &kbrdin, &kbrdin_ops);
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    kbdout = devout;
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    t = thread_create(kkbrd, &kbrdin, TASK, 0, "kkbrd", false);
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    ASSERT(t);
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    thread_ready(t);
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}
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/** Process release of key.
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 *
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 * @param sc Scancode of the key being released.
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 */
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void key_released(uint8_t sc)
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{
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    spinlock_lock(&keylock);
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    switch (sc) {
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    case SC_LSHIFT:
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    case SC_RSHIFT:
508 jermar 131
        keyflags &= ~PRESSED_SHIFT;
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        break;
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    case SC_CAPSLOCK:
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        keyflags &= ~PRESSED_CAPSLOCK;
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        if (lockflags & LOCKED_CAPSLOCK)
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            lockflags &= ~LOCKED_CAPSLOCK;
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        else
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            lockflags |= LOCKED_CAPSLOCK;
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        break;
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    default:
508 jermar 141
        break;
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    }
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    spinlock_unlock(&keylock);
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}
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/** Process keypress.
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 *
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 * @param sc Scancode of the key being pressed.
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 */
1780 jermar 150
void key_pressed(uint8_t sc)
508 jermar 151
{
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    char *map = sc_primary_map;
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    char ascii = sc_primary_map[sc];
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    bool shift, capslock;
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    bool letter = false;
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157
    spinlock_lock(&keylock);
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    switch (sc) {
601 palkovsky 159
    case SC_LSHIFT:
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    case SC_RSHIFT:
508 jermar 161
            keyflags |= PRESSED_SHIFT;
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        break;
601 palkovsky 163
    case SC_CAPSLOCK:
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        keyflags |= PRESSED_CAPSLOCK;
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        break;
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    case SC_SPEC_ESCAPE:
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        break;
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    case SC_LEFTARR:
4042 jermar 169
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x5b);
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        chardev_push_character(kbdout, 0x44);
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        break;
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    case SC_RIGHTARR:
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        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x5b);
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        chardev_push_character(kbdout, 0x43);
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        break;
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    case SC_UPARR:
4042 jermar 179
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x5b);
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        chardev_push_character(kbdout, 0x41);
601 palkovsky 182
        break;
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    case SC_DOWNARR:
4042 jermar 184
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x5b);
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        chardev_push_character(kbdout, 0x42);
601 palkovsky 187
        break;
606 palkovsky 188
    case SC_HOME:
4042 jermar 189
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x4f);
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        chardev_push_character(kbdout, 0x48);
606 palkovsky 192
        break;
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    case SC_END:
4042 jermar 194
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x4f);
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        chardev_push_character(kbdout, 0x46);
606 palkovsky 197
        break;
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    case SC_DELETE:
4042 jermar 199
        chardev_push_character(kbdout, 0x1b);
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        chardev_push_character(kbdout, 0x5b);
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        chardev_push_character(kbdout, 0x33);
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        chardev_push_character(kbdout, 0x7e);
606 palkovsky 203
        break;
601 palkovsky 204
    default:
2572 jermar 205
            letter = islower(ascii);
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        capslock = (keyflags & PRESSED_CAPSLOCK) ||
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            (lockflags & LOCKED_CAPSLOCK);
508 jermar 208
        shift = keyflags & PRESSED_SHIFT;
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        if (letter && capslock)
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            shift = !shift;
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        if (shift)
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            map = sc_secondary_map;
4042 jermar 213
        chardev_push_character(kbdout, map[sc]);
508 jermar 214
        break;
215
    }
216
    spinlock_unlock(&keylock);
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}
511 jermar 218
 
1754 jermar 219
/** @}
1702 cejka 220
 */