/*      $NetBSD: skiconsole.c,v 1.4 2009/07/20 04:59:04 kiyohara Exp $  */

/*-
 * Copyright (c) 2000 Doug Rabson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/cdefs.h>
/* __FBSDID("$FreeBSD: src/sys/boot/ia64/libski/skiconsole.c,v 1.2 2003/04/03 21:36:29 obrien Exp $"); */
#include <lib/libsa/stand.h>
#include <lib/libsa/loadfile.h>

#include "bootstrap.h"
#include "libski.h"

static void
ski_cons_probe(struct console *cp)
{
        cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
}

static int
ski_cons_init(int arg)
{
        ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
        return 0;
}

void
ski_cons_putchar(int c)
{
        ssc(c, 0, 0, 0, SSC_PUTCHAR);
}

static int pollchar = -1;

int
ski_cons_getchar(void)
{
        int c;

        if (pollchar > 0) {
                c = pollchar;
                pollchar = -1;
                return c;
        }

        do {
                c = ssc(0, 0, 0, 0, SSC_GETCHAR);
        } while (c == 0);

        return c;
}

int
ski_cons_poll(void)
{
        int c;
        if (pollchar > 0)
                return 1;
        c = ssc(0, 0, 0, 0, SSC_GETCHAR);
        if (!c)
                return 0;
        pollchar = c;
        return 1;
}

struct console ski_console = {
        "ski",
        "ia64 SKI console",
        0,
        ski_cons_probe,
        ski_cons_init,
        ski_cons_putchar,
        ski_cons_getchar,
        ski_cons_poll
};