/*	$OpenBSD: dev_i386.c,v 1.12 1997/06/06 16:26:57 kstailey Exp $	*/

/*
 * Copyright (c) 1996 Michael Shalayeff
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Michael Shalayeff.
 * 4. 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 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.
 *
 */

#include <libsa.h>
#include "biosdev.h"

extern int debug;

/* XXX use slot for 'rd' for 'hd' pseudo-device */
const char bdevs[19][4] = {
	"wd", "", "fd", "wt", "sd", "st", "cd", "mcd",
	"", "", "", "", "", "", "", "scd", "", "hd", "acd"
};

/* pass dev_t to the open routines */
int
devopen(struct open_file *f, const char *fname, char **file)
{
	struct devsw *dp = devsw;
	register int i, rc = 1;

	*file = (char *)fname;

#ifdef DEBUG
	if (debug)
		printf("devopen:");
#endif

	for (i = 0; i < ndevs && rc != 0; dp++, i++) {
#ifdef DEBUG
		if (debug)
			printf(" %s", dp->dv_name);
#endif
		if ((rc = (*dp->dv_open)(f, file)) == 0) {
			f->f_dev = dp;
			return 0;
		}
#ifdef DEBUG
		else if (debug)
			printf(":%d", rc);
#endif
			
	}
#ifdef DEBUG
	if (debug)
		putchar('\n');
#endif

	if ((f->f_flags & F_NODEV) == 0)
		f->f_dev = dp;

	return rc;
}

void
devboot(bootdev, p)
	dev_t bootdev;
	char *p;
{
#ifdef _TEST
	*p++ = '/';
	*p++ = 'd';
	*p++ = 'e';
	*p++ = 'v';
	*p++ = '/';
	*p++ = 'r';
#endif
	if (bootdev & 0x80)
		*p++ = 'h';
	else
		*p++ = 'f';
	*p++ = 'd';
	*p++ = '0' + (bootdev & 0x7f);
	*p++ = 'a';
	*p = '\0';
}

void
putchar(c)
	int	c;
{
	static int pos = 0;

	switch(c) {
	case '\177':	/* DEL erases */
		putc('\b');
		putc(' ');
		putc('\b');
		break;
	case '\t':
		do
			putc(' ');
		while(++pos % 8);
		break;
	case '\n':
		putc('\r');
	case '\r':
		putc(c);
		pos=0;
		break;
	default:
		putc(c);
		pos++;
		break;
	}
}

int
getchar()
{
	int c = getc();

	if (c == '\b' || c == '\177')
		return(c);

	if (c == '\r')
		c = '\n';

	putchar(c);

	return(c);
}