/*-
 * Copyright 2008 by Nathan Whitehorn. 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.
 *
 * 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/cdefs.h>
__FBSDID("$FreeBSD$");

#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/ofw_bus.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/openpicvar.h>

#include "pic_if.h"

/*
 * Mambo interface
 */
static int	openpic_mambo_probe(device_t);
static int	openpic_mambo_attach(device_t);
static int	openpicbus_mambo_probe(device_t dev);
static int	openpicbus_mambo_attach(device_t dev);
static struct resource *openpicbus_alloc_resource(device_t bus, device_t dev,
    int type, int *rid, u_long start, u_long end, u_long count, u_int flags);

static device_method_t  openpicbus_mambo_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		openpicbus_mambo_probe),
	DEVMETHOD(device_attach,	openpicbus_mambo_attach),

	/* Bus interface */
	DEVMETHOD(bus_alloc_resource,	openpicbus_alloc_resource),

	{0,0}
};

struct openpicbus_softc {
	vm_offset_t picaddr;
};

static driver_t openpicbus_mambo_driver = {
	"openpicbus",
	openpicbus_mambo_methods,
	sizeof(struct openpicbus_softc),
};

static device_method_t  openpic_mambo_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		openpic_mambo_probe),
	DEVMETHOD(device_attach,	openpic_mambo_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_mambo_driver = {
	"openpic",
	openpic_mambo_methods,
	sizeof(struct openpic_softc),
};

static devclass_t openpicbus_devclass;

DRIVER_MODULE(openpicbus, nexus, openpicbus_mambo_driver, 
    openpicbus_devclass, 0, 0);
DRIVER_MODULE(openpic, openpicbus, openpic_mambo_driver, 
    openpic_devclass, 0, 0);

static int
openpicbus_mambo_probe(device_t dev)
{
	const char *type = ofw_bus_get_type(dev);

	if (type == NULL || strcmp(type, "open-pic") != 0)
                return (ENXIO);

	device_set_desc(dev, "Mambo OpenPIC Container");

	return (0);
}

static int
openpicbus_mambo_attach(device_t dev)
{
	uint64_t picaddr;
	phandle_t nexus;
	struct openpicbus_softc *sc;

	sc = device_get_softc(dev);

	nexus = OF_parent(ofw_bus_get_node(dev));

	OF_getprop(nexus,"platform-open-pic",
	    &picaddr,sizeof(picaddr));

	sc->picaddr = picaddr;

	device_add_child(dev,"openpic",-1);

	return (bus_generic_attach(dev));
}

static struct resource *
openpicbus_alloc_resource(device_t bus, device_t dev, int type, int *rid,
		   u_long start, u_long end, u_long count, u_int flags)
{
	struct openpicbus_softc *sc;

	sc = device_get_softc(bus);

	count = 0x40000;
	start = sc->picaddr;
	end = start + count;

	return (bus_alloc_resource(bus, type, rid, start, end, count, flags));
}

static int
openpic_mambo_probe(device_t dev)
{

	device_set_desc(dev, OPENPIC_DEVSTR);
	return (0);
}

static int
openpic_mambo_attach(device_t dev)
{
 
	return (openpic_common_attach(dev,
	    ofw_bus_get_node(device_get_parent(dev))));
}