usr/src/sys/hp300/stand/cons.c

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah $Hdr: cons.c 1.5 89/08/22$
 *
 *      @(#)cons.c      7.4 (Berkeley) 5/5/91
 */

#include "sys/param.h"
#include "samachdep.h"
#include "../hp300/cons.h"

#ifdef ITECONSOLE
int     iteprobe(), iteinit(), itegetchar(), iteputchar();
#endif
#ifdef DCACONSOLE
int     dcaprobe(), dcainit(), dcagetchar(), dcaputchar();
#endif
#ifdef DCMCONSOLE
int     dcmprobe(), dcminit(), dcmgetchar(), dcmputchar();
#endif

struct consdev constab[] = {
#ifdef ITECONSOLE
        { iteprobe,     iteinit,        itegetchar,     iteputchar },
#endif
#ifdef DCACONSOLE
        { dcaprobe,     dcainit,        dcagetchar,     dcaputchar },
#endif
#ifdef DCMCONSOLE
        { dcmprobe,     dcminit,        dcmgetchar,     dcmputchar },
#endif
        { 0 },
};

struct consdev *cn_tab;
int noconsole;

cninit()
{
        register struct consdev *cp;

        cn_tab = NULL;
        noconsole = 1;
        for (cp = constab; cp->cn_probe; cp++) {
                (*cp->cn_probe)(cp);
                if (cp->cn_pri > CN_DEAD &&
                    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
                        cn_tab = cp;
        }
        if (cn_tab) {
                (*cn_tab->cn_init)(cn_tab);
                noconsole = 0;
        }
}

cngetc()
{
        if (cn_tab)
                return((*cn_tab->cn_getc)());
        return(0);
}

cnputc(c)
        int c;
{
        if (cn_tab)
                (*cn_tab->cn_putc)(c);
}