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Ignore whitespace Rev 1842 → Rev 1843

/trunk/kernel/genarch/src/kbd/key.c
0,0 → 1,244
/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
/** @addtogroup genarch
* @{
*/
/**
* @file
* @brief Key processing.
*/
 
#include <genarch/kbd/key.h>
#include <genarch/kbd/scanc.h>
#include <genarch/kbd/scanc_pc.h>
#include <synch/spinlock.h>
#include <console/chardev.h>
#include <typedefs.h>
#include <macros.h>
 
#define PRESSED_SHIFT (1<<0)
#define PRESSED_CAPSLOCK (1<<1)
#define LOCKED_CAPSLOCK (1<<0)
 
#define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */
 
static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
 
SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */
static volatile int keyflags; /**< Tracking of multiple keypresses. */
static volatile int lockflags; /**< Tracking of multiple keys lockings. */
 
/** Process release of key.
*
* @param sc Scancode of the key being released.
*/
void key_released(uint8_t sc)
{
spinlock_lock(&keylock);
switch (sc) {
case SC_LSHIFT:
case SC_RSHIFT:
keyflags &= ~PRESSED_SHIFT;
break;
case SC_CAPSLOCK:
keyflags &= ~PRESSED_CAPSLOCK;
if (lockflags & LOCKED_CAPSLOCK)
lockflags &= ~LOCKED_CAPSLOCK;
else
lockflags |= LOCKED_CAPSLOCK;
break;
default:
break;
}
spinlock_unlock(&keylock);
}
 
/** Process keypress.
*
* @param sc Scancode of the key being pressed.
*/
void key_pressed(uint8_t sc)
{
char *map = sc_primary_map;
char ascii = sc_primary_map[sc];
bool shift, capslock;
bool letter = false;
 
spinlock_lock(&keylock);
switch (sc) {
case SC_LSHIFT:
case SC_RSHIFT:
keyflags |= PRESSED_SHIFT;
break;
case SC_CAPSLOCK:
keyflags |= PRESSED_CAPSLOCK;
break;
case SC_SPEC_ESCAPE:
break;
case SC_LEFTARR:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x5b);
chardev_push_character(&kbrd, 0x44);
break;
case SC_RIGHTARR:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x5b);
chardev_push_character(&kbrd, 0x43);
break;
case SC_UPARR:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x5b);
chardev_push_character(&kbrd, 0x41);
break;
case SC_DOWNARR:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x5b);
chardev_push_character(&kbrd, 0x42);
break;
case SC_HOME:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x4f);
chardev_push_character(&kbrd, 0x48);
break;
case SC_END:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x4f);
chardev_push_character(&kbrd, 0x46);
break;
case SC_DELETE:
chardev_push_character(&kbrd, 0x1b);
chardev_push_character(&kbrd, 0x5b);
chardev_push_character(&kbrd, 0x33);
chardev_push_character(&kbrd, 0x7e);
break;
default:
letter = is_lower(ascii);
capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
shift = keyflags & PRESSED_SHIFT;
if (letter && capslock)
shift = !shift;
if (shift)
map = sc_secondary_map;
chardev_push_character(&kbrd, map[sc]);
break;
}
spinlock_unlock(&keylock);
}
 
uint8_t active_read_buff_read(void)
{
static int i=0;
i &= (ACTIVE_READ_BUFF_SIZE-1);
if(!active_read_buff[i]) {
return 0;
}
return active_read_buff[i++];
}
 
void active_read_buff_write(uint8_t ch)
{
static int i=0;
active_read_buff[i] = ch;
i++;
i &= (ACTIVE_READ_BUFF_SIZE-1);
active_read_buff[i]=0;
}
 
 
void active_read_key_pressed(uint8_t sc)
{
char *map = sc_primary_map;
char ascii = sc_primary_map[sc];
bool shift, capslock;
bool letter = false;
 
/*spinlock_lock(&keylock);*/
switch (sc) {
case SC_LSHIFT:
case SC_RSHIFT:
keyflags |= PRESSED_SHIFT;
break;
case SC_CAPSLOCK:
keyflags |= PRESSED_CAPSLOCK;
break;
case SC_SPEC_ESCAPE:
break;
case SC_LEFTARR:
active_read_buff_write(0x1b);
active_read_buff_write(0x5b);
active_read_buff_write(0x44);
break;
case SC_RIGHTARR:
active_read_buff_write(0x1b);
active_read_buff_write(0x5b);
active_read_buff_write(0x43);
break;
case SC_UPARR:
active_read_buff_write(0x1b);
active_read_buff_write(0x5b);
active_read_buff_write(0x41);
break;
case SC_DOWNARR:
active_read_buff_write(0x1b);
active_read_buff_write(0x5b);
active_read_buff_write(0x42);
break;
case SC_HOME:
active_read_buff_write(0x1b);
active_read_buff_write(0x4f);
active_read_buff_write(0x48);
break;
case SC_END:
active_read_buff_write(0x1b);
active_read_buff_write(0x4f);
active_read_buff_write(0x46);
break;
case SC_DELETE:
active_read_buff_write(0x1b);
active_read_buff_write(0x5b);
active_read_buff_write(0x33);
active_read_buff_write(0x7e);
break;
default:
letter = is_lower(ascii);
capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
shift = keyflags & PRESSED_SHIFT;
if (letter && capslock)
shift = !shift;
if (shift)
map = sc_secondary_map;
active_read_buff_write(map[sc]);
break;
}
/*spinlock_unlock(&keylock);*/
 
}
 
/** @}
*/