/*	$Id: vmel.c,v 1.2 1995/11/07 08:49:37 deraadt Exp $ */

/*
 * Copyright (c) 1995 Theo de Raadt
 * 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 under OpenBSD by
 *	Theo de Raadt for Willowglen Singapore.
 * 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/conf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <mvme68k/dev/vme.h>

/*
 * The VMEL driver deals with D32 transfers on the VME bus. The number
 * of address bits (A16, A24, A32) is irrelevant since the mapping
 * functions will decide how many address bits are relevant.
 */

void vmelattach __P((struct device *, struct device *, void *));
int  vmelmatch __P((struct device *, void *, void *));

struct vmelsoftc {
	struct device		sc_dev;
	struct vmesoftc		*sc_vme;
};

struct cfdriver vmelcd = {
	NULL, "vmel", vmelmatch, vmelattach,
	DV_DULL, sizeof(struct vmelsoftc), 0
};

int
vmelmatch(parent, cf, args)
	struct device *parent;
	void *cf, *args;
{
	return (1);
}

int
vmelscan(parent, child, args)
	struct device *parent;
	void *child, *args;
{
	return (vmescan(parent, child, args, BUS_VMEL));
}

void
vmelattach(parent, self, args)
	struct device *parent, *self;
	void *args;
{
	struct vmelsoftc *sc = (struct vmelsoftc *)self;

	printf("\n");

	sc->sc_vme = (struct vmesoftc *)parent;

	config_search(vmelscan, self, args);
}

/*ARGSUSED*/
int
vmelopen(dev, flag, mode)
	dev_t dev;
	int flag, mode;
{
	if (minor(dev) >= vmelcd.cd_ndevs ||
	    vmelcd.cd_devs[minor(dev)] == NULL)
		return (ENODEV);
	return (0);
}

/*ARGSUSED*/
int
vmelclose(dev, flag, mode)
	dev_t dev;
	int flag, mode;
{

	return (0);
}

/*ARGSUSED*/
int
vmelioctl(dev, cmd, data, flag, p)
	dev_t   dev;
	caddr_t data;
	int     cmd, flag;
	struct proc *p;
{
	int unit = minor(dev);
	struct vmelsoftc *sc = (struct vmelsoftc *) vmelcd.cd_devs[unit];
	int error = 0;

	switch (cmd) {
	default:
		error = ENOTTY;
		break;
	}
	return (error);
}

int
vmelread(dev, uio, flags)
	dev_t dev;
	struct uio *uio;
	int flags;
{
	int unit = minor(dev);
	struct vmelsoftc *sc = (struct vmelsoftc *) vmelcd.cd_devs[unit];

	return (vmerw(sc->sc_vme, uio, flags, BUS_VMEL));
}

int
vmelwrite(dev, uio, flags)
	dev_t dev;
	struct uio *uio;
	int flags;
{
	int unit = minor(dev);
	struct vmelsoftc *sc = (struct vmelsoftc *) vmelcd.cd_devs[unit];

	return (vmerw(sc->sc_vme, uio, flags, BUS_VMEL));
}

int
vmelmmap(dev, off, prot)
	dev_t dev;
	int off, prot;
{
	int unit = minor(dev);
	struct vmelsoftc *sc = (struct vmelsoftc *) vmelcd.cd_devs[unit];
	caddr_t pa;

	pa = vmepmap(sc->sc_vme, (caddr_t)off, NBPG, BUS_VMEL);
	printf("vmel %x pa %x\n", off, pa);
	if (pa == NULL)
		return (-1);
	return (m68k_btop(pa));
}