/*

 * libfdt - Flat Device Tree manipulation

 *	Testcase for fdt_subnode_offset()

 * Copyright (C) 2006 David Gibson, IBM Corporation.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <stdint.h>

#include <fdt.h>

#include <libfdt.h>

#include "tests.h"

#include "testdata.h"

int check_subnode(struct fdt_header *fdt, int parent, const char *name)

{

	int offset;

	const struct fdt_node_header *nh;

	uint32_t tag;

	verbose_printf("Checking subnode \"%s\" of %d...", name, parent);

	offset = fdt_subnode_offset(fdt, parent, name);

	verbose_printf("offset %d...", offset);

	if (offset < 0)

		FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset));

	nh = fdt_offset_ptr(fdt, offset, sizeof(*nh));

	verbose_printf("pointer %p\n", nh);

	if (! nh)

		FAIL("NULL retrieving subnode \"%s\"", name);

	tag = fdt32_to_cpu(nh->tag);

	if (tag != FDT_BEGIN_NODE)

		FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name);

	if (!nodename_eq(nh->name, name))

		FAIL("Subnode name mismatch \"%s\" instead of \"%s\"",

		     nh->name, name);

	return offset;

}

int main(int argc, char *argv[])

{

	void *fdt;

	int subnode1_offset, subnode2_offset;

	int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2;

	test_init(argc, argv);

	fdt = load_blob_arg(argc, argv);

	subnode1_offset = check_subnode(fdt, 0, "subnode@1");

	subnode2_offset = check_subnode(fdt, 0, "subnode@2");

	if (subnode1_offset == subnode2_offset)

		FAIL("Different subnodes have same offset");

	check_property_cell(fdt, subnode1_offset, "prop-int", TEST_VALUE_1);

	check_property_cell(fdt, subnode2_offset, "prop-int", TEST_VALUE_2);

	subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode");

	subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0");

	subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode");

	check_property_cell(fdt, subsubnode1_offset, "prop-int", TEST_VALUE_1);

	check_property_cell(fdt, subsubnode2_offset, "prop-int", TEST_VALUE_2);

	check_property_cell(fdt, subsubnode2_offset2, "prop-int", TEST_VALUE_2);

	if (subsubnode2_offset != subsubnode2_offset2)

		FAIL("Different offsets with and without unit address");

	PASS();

}