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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: opl_sb.c,v 1.6 2006/07/27 05:55:03 miod Exp $	*/
/*	$NetBSD: opl_sb.c,v 1.4 1998/12/08 14:26:57 augustss Exp $	*/

/*
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson (augustss@netbsd.org).
 *
 * 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/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/selinfo.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>
#include <dev/isa/sbdspvar.h>

int	opl_sb_match(struct device *, void *, void *);
void	opl_sb_attach(struct device *, struct device *, void *);

struct cfattach opl_sb_ca = {
	sizeof (struct opl_softc), opl_sb_match, opl_sb_attach
};

int
opl_sb_match(parent, match, aux)
	struct device *parent;
	void *match;
	void *aux;
{
	struct audio_attach_args *aa = (struct audio_attach_args *)aux;
	struct sbdsp_softc *ssc = (struct sbdsp_softc *)parent;
	struct opl_attach_arg oaa;

	if (aa->type != AUDIODEV_TYPE_OPL)
		return (0);
	memset(&oaa, 0, sizeof oaa);
	oaa.ioh = ssc->sc_ioh;
	oaa.iot = ssc->sc_iot;
	return (opl_find(&oaa));
}

void
opl_sb_attach(parent, self, aux)
	struct device *parent;
	struct device *self;
	void *aux;
{
	struct  sbdsp_softc *ssc = (struct sbdsp_softc *)parent;
	struct opl_softc *sc = (struct opl_softc *)self;

	sc->ioh = ssc->sc_ioh;
	sc->iot = ssc->sc_iot;
	sc->offs = 0;
	sc->spkrctl = sbdsp_speaker_ctl;
	sc->spkrarg = ssc;
	strlcpy(sc->syn.name, "SB ", sizeof sc->syn.name);

	opl_attach(sc);
}