openpic_iobus.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright 2003 by Peter Grehan. 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. 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.
 *
 */

/*
 * The psim iobus attachment for the OpenPIC interrupt controller.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>

#include <dev/ofw/openfirm.h>

#include <machine/bus.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/pio.h>
#include <machine/resource.h>

#include <vm/vm.h>
#include <vm/pmap.h>

#include <sys/rman.h>

#include <machine/openpicreg.h>
#include <machine/openpicvar.h>
#include <powerpc/psim/iobusvar.h>

#include "pic_if.h"

/*
 * PSIM IOBus interface
 */
static int	openpic_iobus_probe(device_t);
static int	openpic_iobus_attach(device_t);

static device_method_t  openpic_iobus_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		openpic_iobus_probe),
	DEVMETHOD(device_attach,	openpic_iobus_attach),

	/* PIC interface */
	DEVMETHOD(pic_config,		openpic_config),
	DEVMETHOD(pic_dispatch,		openpic_dispatch),
	DEVMETHOD(pic_enable,		openpic_enable),
	DEVMETHOD(pic_eoi,		openpic_eoi),
	DEVMETHOD(pic_ipi,		openpic_ipi),
	DEVMETHOD(pic_mask,		openpic_mask),
	DEVMETHOD(pic_unmask,		openpic_unmask),
	{ 0, 0 }
};

static driver_t openpic_iobus_driver = {
	"openpic",
	openpic_iobus_methods,
	sizeof(struct openpic_softc)
};

DRIVER_MODULE(openpic, iobus, openpic_iobus_driver, 0, 0);

static int
openpic_iobus_probe(device_t dev)
{
	struct openpic_softc *sc;
	char *name;

	name = iobus_get_name(dev);
	if (strcmp(name, "interrupt-controller") != 0)
		return (ENXIO);

	/*
	 * The description was already printed out in the nexus
	 * probe, so don't do it again here
	 */
	device_set_desc(dev, OPENPIC_DEVSTR);

	sc = device_get_softc(dev);
	sc->sc_psim = 1;

	return (0);
}

static int
openpic_iobus_attach(device_t dev)
{

	return (openpic_common_attach(dev, 0));
}