xref: /src/sys/arch/evbsh3/evbsh3/mainbus.c

/*	$NetBSD: mainbus.c,v 1.1 2001/02/06 16:45:20 uch Exp $	*/

/*
 * Copyright (c) 1996 Christopher G. Demetriou.  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 Christopher G. Demetriou
 *	for the NetBSD Project.
 * 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 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/shbvar.h>

int	mainbus_match __P((struct device *, struct cfdata *, void *));
void	mainbus_attach __P((struct device *, struct device *, void *));

struct cfattach mainbus_ca = {
	sizeof(struct device), mainbus_match, mainbus_attach
};

int	mainbus_print __P((void *, const char *));

union mainbus_attach_args {
	const char *mba_busname;		/* first elem of all */
	struct shbus_attach_args mba_sba;
#ifdef	TODO
	struct pcibus_attach_args mba_pba;
	struct eisabus_attach_args mba_eba;
	struct isabus_attach_args mba_iba;
#endif
};

/*
 * This is set when the ISA bus is attached.  If it's not set by the
 * time it's checked below, then mainbus attempts to attach an ISA.
 */
int	isa_has_been_seen;

/*
 * Probe for the mainbus; always succeeds.
 */
int
mainbus_match(parent, cf, aux)
	struct device *parent;
	struct cfdata *cf;
	void *aux;
{

	return 1;
}

/*
 * Attach the mainbus.
 */
void
mainbus_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	union mainbus_attach_args mba;

	printf("\n");

	mba.mba_sba.iba_busname = "shb";
	mba.mba_sba.iba_iot = 0;
	mba.mba_sba.iba_memt = 0;

	config_found(self, &mba.mba_sba, mainbus_print);
}

int
mainbus_print(aux, pnp)
	void *aux;
	const char *pnp;
{
	union mainbus_attach_args *mba = aux;

	if (pnp)
		printf("%s at %s", mba->mba_busname, pnp);
#ifdef	TODO
	if (!strcmp(mba->mba_busname, "pci"))
		printf(" bus %d", mba->mba_pba.pba_bus);
#endif
	return (UNCONF);
}