0,0 → 1,117 |
/* |
* Copyright (C) 2003 Josef Cejka |
* Copyright (C) 2005 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. |
*/ |
|
#include <arch/drivers/keyboard.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <arch/cp0.h> |
#include <putchar.h> |
#include <synch/spinlock.h> |
#include <synch/waitq.h> |
#include <typedefs.h> |
#include <arch/drivers/arc.h> |
|
static void keyboard_enable(void); |
static void keyboard_disable(void); |
static void arc_kb_disable(void); |
static void arc_kb_enable(void); |
|
static chardev_t kbrd; |
|
static chardev_operations_t arc_ops = { |
.resume = arc_kb_enable, |
.suspend = arc_kb_disable |
}; |
|
static chardev_operations_t msim_ops = { |
.resume = keyboard_enable, |
.suspend = keyboard_disable |
}; |
|
static int arc_kb_enabled; |
|
/** Initialize keyboard subsystem. */ |
void keyboard_init(void) |
{ |
if (arc_enabled()) { |
chardev_initialize(&kbrd, &arc_ops); |
arc_kb_enabled = 1; |
} else { |
cp0_unmask_int(KEYBOARD_IRQ); |
chardev_initialize(&kbrd, &msim_ops); |
} |
stdin = &kbrd; |
} |
|
/** Process keyboard interrupt. */ |
void keyboard(void) |
{ |
char ch; |
|
ch = *((char *) KEYBOARD_ADDRESS); |
if (ch =='\r') |
ch = '\n'; |
chardev_push_character(&kbrd, ch); |
} |
|
/* Called from getc(). */ |
void keyboard_enable(void) |
{ |
cp0_unmask_int(KEYBOARD_IRQ); |
} |
|
/* Called from getc(). */ |
void keyboard_disable(void) |
{ |
cp0_mask_int(KEYBOARD_IRQ); |
} |
|
/*****************************/ |
/* Arc keyboard */ |
|
void keyboard_poll(void) |
{ |
int ch; |
|
if (!arc_enabled() || !arc_kb_enabled) |
return; |
while ((ch = arc_getchar()) != -1) |
chardev_push_character(&kbrd, ch); |
} |
|
static void arc_kb_enable(void) |
{ |
arc_kb_enabled = 1; |
} |
|
/* Called from getc(). */ |
static void arc_kb_disable(void) |
{ |
arc_kb_enabled = 0; |
} |