/*
* 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.
*/
/** @addtogroup ia64
* @{
*/
/** @file
*/
#include <arch/ski/ski.h>
#include <console/console.h>
#include <console/chardev.h>
#include <sysinfo/sysinfo.h>
#include <arch/types.h>
#include <proc/thread.h>
#include <synch/spinlock.h>
#include <arch/asm.h>
#include <arch/drivers/kbd.h>
#include <arch.h>
static indev_t skiin; /**< Ski input device. */
static outdev_t skiout; /**< Ski output device. */
static bool kbd_disabled;
/** Display character on debug console
*
* Use SSC (Simulator System Call) to
* display character on debug console.
*
* @param d Character device.
* @param ch Character to be printed.
*/
static void ski_putchar(outdev_t *d, const char ch, bool silent)
{
if (!silent) {
asm volatile (
"mov r15 = %0\n"
"mov r32 = %1\n" /* r32 is in0 */
"break 0x80000\n" /* modifies r8 */
:
: "i" (SKI_PUTCHAR), "r" (ch)
: "r15", "in0", "r8"
);
if (ch == '\n')
ski_putchar(d, '\r', false);
}
}
static indev_operations_t skiin_ops = {
.poll = NULL
};
static outdev_operations_t skiout_ops = {
.write = ski_putchar
};
/** Ask debug console if a key was pressed.
*
* Use SSC (Simulator System Call) to
* get character from debug console.
*
* This call is non-blocking.
*
* @return ASCII code of pressed key or 0 if no key pressed.
*/
static int32_t ski_getchar(void)
{
uint64_t ch;
asm volatile (
"mov r15 = %1\n"
"break 0x80000;;\n" /* modifies r8 */
"mov %0 = r8;;\n"
: "=r" (ch)
: "i" (SKI_GETCHAR)
: "r15", "r8"
);
return (int32_t) ch;
}
/** Ask keyboard if a key was pressed. */
static void poll_keyboard(void)
{
char ch;
if (kbd_disabled)
return;
ch = ski_getchar();
if(ch == '\r')
ch = '\n';
if (ch) {
indev_push_character(&skiin, ch);
return;
}
}
#define POLL_INTERVAL 10000 /* 10 ms */
/** Kernel thread for polling keyboard. */
static void kkbdpoll(void *arg)
{
while (1) {
if (!silent) {
poll_keyboard();
}
thread_usleep(POLL_INTERVAL);
}
}
/** Initialize debug console
*
* Issue SSC (Simulator System Call) to
* to open debug console.
*/
static void ski_init(void)
{
static bool initialized;
if (initialized)
return;
asm volatile (
"mov r15 = %0\n"
"break 0x80000\n"
:
: "i" (SKI_INIT_CONSOLE)
: "r15", "r8"
);
initialized = true;
}
indev_t *skiin_init(void)
{
ski_init();
indev_initialize("skiin", &skiin, &skiin_ops);
thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
if (t)
thread_ready(t);
else
return NULL;
sysinfo_set_item_val("kbd", NULL, true);
sysinfo_set_item_val("kbd.type", NULL, KBD_SKI);
return &skiin;
}
void skiout_init(void)
{
ski_init();
outdev_initialize("skiout", &skiout, &skiout_ops);
stdout = &skiout;
sysinfo_set_item_val("fb", NULL, false);
}
void ski_kbd_grab(void)
{
kbd_disabled = true;
}
void ski_kbd_release(void)
{
kbd_disabled = false;
}
/** @}
*/