NetBSD/sys/dev/isa/opl_isa.c

/*	$NetBSD: opl_isa.c,v 1.12 2005/12/11 12:22:03 christos Exp $	*/

/*-
 * Copyright (c) 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson.
 *
 * 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 NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__KERNEL_RCSID(0, "$NetBSD: opl_isa.c,v 1.12 2005/12/11 12:22:03 christos Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/select.h>
#include <sys/audioio.h>
#include <sys/midiio.h>

#include <machine/bus.h>

#include <dev/audio_if.h>
#include <dev/midi_if.h>

#include <dev/ic/oplreg.h>
#include <dev/ic/oplvar.h>

#include <dev/isa/isavar.h>

#define OPL_SIZE 4

int	opl_isa_match(struct device *, struct cfdata *, void *);
void	opl_isa_attach(struct device *, struct device *, void *);

CFATTACH_DECL(opl_isa, sizeof(struct opl_softc),
    opl_isa_match, opl_isa_attach, NULL, NULL);

int
opl_isa_match(parent, match, aux)
	struct device *parent;
	struct cfdata *match;
	void *aux;
{
	struct isa_attach_args *ia = aux;
	struct opl_softc sc;
	int r;

	if (ia->ia_nio < 1)
		return (0);

	if (ISA_DIRECT_CONFIG(ia))
		return (0);

	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
		return (0);

	memset(&sc, 0, sizeof sc);
	sc.iot = ia->ia_iot;
	if (bus_space_map(sc.iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &sc.ioh))
		return (0);
	r = opl_find(&sc);
        bus_space_unmap(sc.iot, sc.ioh, OPL_SIZE);
	if (r != 0) {
		ia->ia_nio = 1;
		ia->ia_io[0].ir_size = OPL_SIZE;

		ia->ia_nirq = 0;
		ia->ia_niomem = 0;
		ia->ia_ndrq = 0;
	}
	return (r);
}

void
opl_isa_attach(parent, self, aux)
	struct device *parent;
	struct device *self;
	void *aux;
{
	struct opl_softc *sc = (struct opl_softc *)self;
	struct isa_attach_args *ia = aux;

	sc->iot = ia->ia_iot;

	if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
	    0, &sc->ioh)) {
		printf("opl_isa_attach: bus_space_map failed\n");
		return;
	}
	sc->offs = 0;

	opl_attach(sc);
}