/*	$NetBSD: uni-n.c,v 1.6 2011/10/26 13:54:18 macallan Exp $	*/

/*-
 * Copyright (C) 2005 Michael Lorenz.
 *
 * 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.
 */

/*
 * a driver to match the uni_n node in OF's device tree and attach its children 
 */
 
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.6 2011/10/26 13:54:18 macallan Exp $");

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

#include <dev/ofw/openfirm.h>

#include <machine/autoconf.h>

static void uni_n_attach(device_t, device_t, void *);
static int uni_n_match(device_t, cfdata_t, void *);
static int uni_n_print(void *, const char *);

struct uni_n_softc {
	device_t sc_dev;
	int sc_node;
};

CFATTACH_DECL_NEW(uni_n, sizeof(struct uni_n_softc),
    uni_n_match, uni_n_attach, NULL, NULL);

int
uni_n_match(device_t parent, cfdata_t cf, void *aux)
{
	struct confargs *ca = aux;
	char compat[32];
	if (strcmp(ca->ca_name, "uni-n") != 0)
		return 0;

	memset(compat, 0, sizeof(compat));
	OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
	if (strcmp(compat, "uni-north") != 0)
		return 0;

	return 1;
}

/*
 * Attach all the sub-devices we can find
 */
void
uni_n_attach(device_t parent, device_t self, void *aux)
{
	struct uni_n_softc *sc = device_private(self);
	struct confargs *our_ca = aux;
	struct confargs ca;
	int node, child, namelen;
	u_int reg[20];
	int intr[6];
	char name[32];

	sc->sc_dev = self;
	node = OF_finddevice("/uni-n");
	sc->sc_node = node;
	printf(" address 0x%08x\n",our_ca->ca_reg[0]);
	
	for (child = OF_child(node); child; child = OF_peer(child)) {
		namelen = OF_getprop(child, "name", name, sizeof(name));
		if (namelen < 0)
			continue;
		if (namelen >= sizeof(name))
			continue;

		name[namelen] = 0;
		ca.ca_name = name;
		ca.ca_node = child;

		ca.ca_nreg  = OF_getprop(child, "reg", reg, sizeof(reg));
		ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
				sizeof(intr));
		if (ca.ca_nintr == -1)
			ca.ca_nintr = OF_getprop(child, "interrupts", intr,
					sizeof(intr));

		ca.ca_reg = reg;
		ca.ca_intr = intr;

		config_found(self, &ca, uni_n_print);
	}
}

int
uni_n_print(void *aux, const char *uni_n)
{
	struct confargs *ca = aux;
	if (uni_n)
		aprint_normal("%s at %s", ca->ca_name, uni_n);

	if (ca->ca_nreg > 0)
		aprint_normal(" address 0x%x", ca->ca_reg[0]);

	return UNCONF;
}