/*-
 * Copyright (c) 2015 Landon Fuller <landon@landonf.org>
 * 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,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include "opt_bwn.h"
#include "opt_wlan.h"

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

#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>

#include <dev/bhnd/bhnd.h>
#include <dev/bhnd/bhnd_ids.h>

#include "bhnd_nvram_map.h"

static const struct resource_spec bwn_rspec[] = {
	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
	{ -1, -1, 0 }
};

#define	RSPEC_LEN	(sizeof(bwn_rspec)/sizeof(bwn_rspec[0]))

struct bwn_softc {
	struct resource_spec	rspec[RSPEC_LEN];
	struct bhnd_resource	*res[RSPEC_LEN-1];
};

static const struct bwn_device {
	uint16_t	 vendor;
	uint16_t	 device;
} bwn_devices[] = {
	{ BHND_MFGID_BCM,	BHND_COREID_D11 },
	{ BHND_MFGID_INVALID,	BHND_COREID_INVALID }
};

static int
bwn_probe(device_t dev)
{
	const struct bwn_device	*id;

	for (id = bwn_devices; id->device != BHND_COREID_INVALID; id++)
	{
		if (bhnd_get_vendor(dev) == id->vendor &&
		    bhnd_get_device(dev) == id->device)
		{
			device_set_desc(dev, bhnd_get_device_name(dev));
			return (BUS_PROBE_DEFAULT);
		}
	}

	return (ENXIO);
}

static int
bwn_attach(device_t dev)
{
	struct bwn_softc	*sc;
	struct bhnd_resource	*r;
	int			 error;

	sc = device_get_softc(dev);

	memcpy(sc->rspec, bwn_rspec, sizeof(bwn_rspec));
	if ((error = bhnd_alloc_resources(dev, sc->rspec, sc->res)))
		return (error);

	// XXX TODO
	r = sc->res[0];
	device_printf(dev, "got rid=%d res=%p\n", sc->rspec[0].rid, r);

	uint8_t	macaddr[6];
	error = bhnd_nvram_getvar(dev, BHND_NVAR_MACADDR, macaddr,
	    sizeof(macaddr));
	if (error)
		return (error);

	device_printf(dev, "got macaddr %6D\n", macaddr, ":");

	return (0);
}

static int
bwn_detach(device_t dev)
{
	struct bwn_softc	*sc;

	sc = device_get_softc(dev);
	bhnd_release_resources(dev, sc->rspec, sc->res);

	return (0);
}

static int
bwn_suspend(device_t dev)
{
	return (0);
}

static int
bwn_resume(device_t dev)
{
	return (0);
}

static device_method_t bwn_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		bwn_probe),
	DEVMETHOD(device_attach,	bwn_attach),
	DEVMETHOD(device_detach,	bwn_detach),
	DEVMETHOD(device_suspend,	bwn_suspend),
	DEVMETHOD(device_resume,	bwn_resume),
	DEVMETHOD_END
};

static devclass_t bwn_devclass;

DEFINE_CLASS_0(bwn, bwn_driver, bwn_methods, sizeof(struct bwn_softc));
DRIVER_MODULE(bwn_mac, bhnd, bwn_driver, bwn_devclass, 0, 0);
MODULE_DEPEND(bwn_mac, bhnd, 1, 1, 1);
MODULE_VERSION(bwn_mac, 1);