[deliverable/linux.git] / drivers / of / selftest.c

/*
 * Self tests for device tree subsystem
 */

#define pr_fmt(fmt) "### dt-test ### " fmt

#include <linux/clk.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/device.h>

static struct selftest_results {
	int passed;
	int failed;
} selftest_results;

#define selftest(result, fmt, ...) { \
	if (!(result)) { \
		selftest_results.failed++; \
		pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
	} else { \
		selftest_results.passed++; \
		pr_debug("pass %s():%i\n", __func__, __LINE__); \
	} \
}

static void __init of_selftest_dynamic(void)
{
	struct device_node *np;
	struct property *prop;

	np = of_find_node_by_path("/testcase-data");
	if (!np) {
		pr_err("missing testcase data\n");
		return;
	}

	/* Array of 4 properties for the purpose of testing */
	prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
	if (!prop) {
		selftest(0, "kzalloc() failed\n");
		return;
	}

	/* Add a new property - should pass*/
	prop->name = "new-property";
	prop->value = "new-property-data";
	prop->length = strlen(prop->value);
	selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");

	/* Try to add an existing property - should fail */
	prop++;
	prop->name = "new-property";
	prop->value = "new-property-data-should-fail";
	prop->length = strlen(prop->value);
	selftest(of_add_property(np, prop) != 0,
		 "Adding an existing property should have failed\n");

	/* Try to modify an existing property - should pass */
	prop->value = "modify-property-data-should-pass";
	prop->length = strlen(prop->value);
	selftest(of_update_property(np, prop) == 0,
		 "Updating an existing property should have passed\n");

	/* Try to modify non-existent property - should pass*/
	prop++;
	prop->name = "modify-property";
	prop->value = "modify-missing-property-data-should-pass";
	prop->length = strlen(prop->value);
	selftest(of_update_property(np, prop) == 0,
		 "Updating a missing property should have passed\n");

	/* Remove property - should pass */
	selftest(of_remove_property(np, prop) == 0,
		 "Removing a property should have passed\n");

	/* Adding very large property - should pass */
	prop++;
	prop->name = "large-property-PAGE_SIZEx8";
	prop->length = PAGE_SIZE * 8;
	prop->value = kzalloc(prop->length, GFP_KERNEL);
	selftest(prop->value != NULL, "Unable to allocate large buffer\n");
	if (prop->value)
		selftest(of_add_property(np, prop) == 0,
			 "Adding a large property should have passed\n");
}

static void __init of_selftest_parse_phandle_with_args(void)
{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
		pr_err("missing testcase data\n");
		return;
	}

	rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
	selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);

	for (i = 0; i < 8; i++) {
		bool passed = true;
		rc = of_parse_phandle_with_args(np, "phandle-list",
						"#phandle-cells", i, &args);

		/* Test the values from tests-phandle.dtsi */
		switch (i) {
		case 0:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == (i + 1));
			break;
		case 1:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == (i + 1));
			passed &= (args.args[1] == 0);
			break;
		case 2:
			passed &= (rc == -ENOENT);
			break;
		case 3:
			passed &= !rc;
			passed &= (args.args_count == 3);
			passed &= (args.args[0] == (i + 1));
			passed &= (args.args[1] == 4);
			passed &= (args.args[2] == 3);
			break;
		case 4:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == (i + 1));
			passed &= (args.args[1] == 100);
			break;
		case 5:
			passed &= !rc;
			passed &= (args.args_count == 0);
			break;
		case 6:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == (i + 1));
			break;
		case 7:
			passed &= (rc == -ENOENT);
			break;
		default:
			passed = false;
		}

		selftest(passed, "index %i - data error on node %s rc=%i\n",
			 i, args.np->full_name, rc);
	}

	/* Check for missing list property */
	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
					"#phandle-cells", 0, &args);
	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-missing",
					"#phandle-cells");
	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);

	/* Check for missing cells property */
	rc = of_parse_phandle_with_args(np, "phandle-list",
					"#phandle-cells-missing", 0, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list",
					"#phandle-cells-missing");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

	/* Check for bad phandle in list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
					"#phandle-cells", 0, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
					"#phandle-cells");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

	/* Check for incorrectly formed argument list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
					"#phandle-cells", 1, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
					"#phandle-cells");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
}

static void __init of_selftest_property_match_string(void)
{
	struct device_node *np;
	int rc;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
		pr_err("No testcase data in device tree\n");
		return;
	}

	rc = of_property_match_string(np, "phandle-list-names", "first");
	selftest(rc == 0, "first expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "second");
	selftest(rc == 1, "second expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "third");
	selftest(rc == 2, "third expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "fourth");
	selftest(rc == -ENODATA, "unmatched string; rc=%i", rc);
	rc = of_property_match_string(np, "missing-property", "blah");
	selftest(rc == -EINVAL, "missing property; rc=%i", rc);
	rc = of_property_match_string(np, "empty-property", "blah");
	selftest(rc == -ENODATA, "empty property; rc=%i", rc);
	rc = of_property_match_string(np, "unterminated-string", "blah");
	selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);
}

static void __init of_selftest_parse_interrupts(void)
{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
	if (!np) {
		pr_err("missing testcase data\n");
		return;
	}

	for (i = 0; i < 4; i++) {
		bool passed = true;
		args.args_count = 0;
		rc = of_irq_parse_one(np, i, &args);

		passed &= !rc;
		passed &= (args.args_count == 1);
		passed &= (args.args[0] == (i + 1));

		selftest(passed, "index %i - data error on node %s rc=%i\n",
			 i, args.np->full_name, rc);
	}
	of_node_put(np);

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
	if (!np) {
		pr_err("missing testcase data\n");
		return;
	}

	for (i = 0; i < 4; i++) {
		bool passed = true;
		args.args_count = 0;
		rc = of_irq_parse_one(np, i, &args);

		/* Test the values from tests-phandle.dtsi */
		switch (i) {
		case 0:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == 9);
			break;
		case 1:
			passed &= !rc;
			passed &= (args.args_count == 3);
			passed &= (args.args[0] == 10);
			passed &= (args.args[1] == 11);
			passed &= (args.args[2] == 12);
			break;
		case 2:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == 13);
			passed &= (args.args[1] == 14);
			break;
		case 3:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == 15);
			passed &= (args.args[1] == 16);
			break;
		default:
			passed = false;
		}
		selftest(passed, "index %i - data error on node %s rc=%i\n",
			 i, args.np->full_name, rc);
	}
	of_node_put(np);
}

static void __init of_selftest_parse_interrupts_extended(void)
{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
	if (!np) {
		pr_err("missing testcase data\n");
		return;
	}

	for (i = 0; i < 7; i++) {
		bool passed = true;
		rc = of_irq_parse_one(np, i, &args);

		/* Test the values from tests-phandle.dtsi */
		switch (i) {
		case 0:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == 1);
			break;
		case 1:
			passed &= !rc;
			passed &= (args.args_count == 3);
			passed &= (args.args[0] == 2);
			passed &= (args.args[1] == 3);
			passed &= (args.args[2] == 4);
			break;
		case 2:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == 5);
			passed &= (args.args[1] == 6);
			break;
		case 3:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == 9);
			break;
		case 4:
			passed &= !rc;
			passed &= (args.args_count == 3);
			passed &= (args.args[0] == 10);
			passed &= (args.args[1] == 11);
			passed &= (args.args[2] == 12);
			break;
		case 5:
			passed &= !rc;
			passed &= (args.args_count == 2);
			passed &= (args.args[0] == 13);
			passed &= (args.args[1] == 14);
			break;
		case 6:
			passed &= !rc;
			passed &= (args.args_count == 1);
			passed &= (args.args[0] == 15);
			break;
		default:
			passed = false;
		}

		selftest(passed, "index %i - data error on node %s rc=%i\n",
			 i, args.np->full_name, rc);
	}
	of_node_put(np);
}

static struct of_device_id match_node_table[] = {
	{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
	{ .data = "B", .type = "type1", }, /* followed by type alone */

	{ .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
	{ .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
	{ .data = "Cc", .name = "name2", .type = "type2", },

	{ .data = "E", .compatible = "compat3" },
	{ .data = "G", .compatible = "compat2", },
	{ .data = "H", .compatible = "compat2", .name = "name5", },
	{ .data = "I", .compatible = "compat2", .type = "type1", },
	{ .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
	{ .data = "K", .compatible = "compat2", .name = "name9", },
	{}
};

static struct {
	const char *path;
	const char *data;
} match_node_tests[] = {
	{ .path = "/testcase-data/match-node/name0", .data = "A", },
	{ .path = "/testcase-data/match-node/name1", .data = "B", },
	{ .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
	{ .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
	{ .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
	{ .path = "/testcase-data/match-node/name3", .data = "E", },
	{ .path = "/testcase-data/match-node/name4", .data = "G", },
	{ .path = "/testcase-data/match-node/name5", .data = "H", },
	{ .path = "/testcase-data/match-node/name6", .data = "G", },
	{ .path = "/testcase-data/match-node/name7", .data = "I", },
	{ .path = "/testcase-data/match-node/name8", .data = "J", },
	{ .path = "/testcase-data/match-node/name9", .data = "K", },
};

static void __init of_selftest_match_node(void)
{
	struct device_node *np;
	const struct of_device_id *match;
	int i;

	for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
		np = of_find_node_by_path(match_node_tests[i].path);
		if (!np) {
			selftest(0, "missing testcase node %s\n",
				match_node_tests[i].path);
			continue;
		}

		match = of_match_node(match_node_table, np);
		if (!match) {
			selftest(0, "%s didn't match anything\n",
				match_node_tests[i].path);
			continue;
		}

		if (strcmp(match->data, match_node_tests[i].data) != 0) {
			selftest(0, "%s got wrong match. expected %s, got %s\n",
				match_node_tests[i].path, match_node_tests[i].data,
				(const char *)match->data);
			continue;
		}
		selftest(1, "passed");
	}
}

static void __init of_selftest_platform_populate(void)
{
	int irq;
	struct device_node *np;
	struct platform_device *pdev;

	np = of_find_node_by_path("/testcase-data");
	of_platform_populate(np, of_default_bus_match_table, NULL, NULL);

	/* Test that a missing irq domain returns -EPROBE_DEFER */
	np = of_find_node_by_path("/testcase-data/testcase-device1");
	pdev = of_find_device_by_node(np);
	selftest(pdev, "device 1 creation failed\n");

	irq = platform_get_irq(pdev, 0);
	selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);

	/* Test that a parsing failure does not return -EPROBE_DEFER */
	np = of_find_node_by_path("/testcase-data/testcase-device2");
	pdev = of_find_device_by_node(np);
	selftest(pdev, "device 2 creation failed\n");
	irq = platform_get_irq(pdev, 0);
	selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);

}

static int __init of_selftest(void)
{
	struct device_node *np;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
		pr_info("No testcase data in device tree; not running tests\n");
		return 0;
	}
	of_node_put(np);

	pr_info("start of selftest - you will see error messages\n");
	of_selftest_dynamic();
	of_selftest_parse_phandle_with_args();
	of_selftest_property_match_string();
	of_selftest_parse_interrupts();
	of_selftest_parse_interrupts_extended();
	of_selftest_match_node();
	of_selftest_platform_populate();
	pr_info("end of selftest - %i passed, %i failed\n",
		selftest_results.passed, selftest_results.failed);
	return 0;
}
late_initcall(of_selftest);
Commit	Line	Data
53a42093 GL	1	/*
	2	* Self tests for device tree subsystem
	3	*/
	4
cabb7d5b	5	#define pr_fmt(fmt) "### dt-test ### " fmt
53a42093 GL	6
	7	#include <linux/clk.h>
	8	#include <linux/err.h>
	9	#include <linux/errno.h>
	10	#include <linux/module.h>
	11	#include <linux/of.h>
a9f10ca7	12	#include <linux/of_irq.h>
82c0f589	13	#include <linux/of_platform.h>
53a42093 GL	14	#include <linux/list.h>
	15	#include <linux/mutex.h>
	16	#include <linux/slab.h>
	17	#include <linux/device.h>
	18
a9f10ca7 GL	19	static struct selftest_results {
	20	int passed;
	21	int failed;
	22	} selftest_results;
	23
53a42093	24	#define selftest(result, fmt, ...) { \
cabb7d5b	25	if (!(result)) { \
a9f10ca7 GL	26	selftest_results.failed++; \
a9f10ca7 GL	27	pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
cabb7d5b	28	} else { \
a9f10ca7 GL	29	selftest_results.passed++; \
a9f10ca7 GL	30	pr_debug("pass %s():%i\n", __func__, __LINE__); \
cabb7d5b	31	} \
53a42093 GL	32	}
53a42093 GL	33
7e66c5c7 GL	34	static void __init of_selftest_dynamic(void)
	35	{
	36	struct device_node *np;
	37	struct property *prop;
	38
	39	np = of_find_node_by_path("/testcase-data");
	40	if (!np) {
	41	pr_err("missing testcase data\n");
	42	return;
	43	}
	44
	45	/* Array of 4 properties for the purpose of testing */
	46	prop = kzalloc(sizeof(prop) 4, GFP_KERNEL);
	47	if (!prop) {
	48	selftest(0, "kzalloc() failed\n");
	49	return;
	50	}
	51
	52	/* Add a new property - should pass*/
	53	prop->name = "new-property";
	54	prop->value = "new-property-data";
	55	prop->length = strlen(prop->value);
	56	selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
	57
	58	/* Try to add an existing property - should fail */
	59	prop++;
	60	prop->name = "new-property";
	61	prop->value = "new-property-data-should-fail";
	62	prop->length = strlen(prop->value);
	63	selftest(of_add_property(np, prop) != 0,
	64	"Adding an existing property should have failed\n");
	65
	66	/* Try to modify an existing property - should pass */
	67	prop->value = "modify-property-data-should-pass";
	68	prop->length = strlen(prop->value);
	69	selftest(of_update_property(np, prop) == 0,
	70	"Updating an existing property should have passed\n");
	71
	72	/* Try to modify non-existent property - should pass*/
	73	prop++;
	74	prop->name = "modify-property";
	75	prop->value = "modify-missing-property-data-should-pass";
	76	prop->length = strlen(prop->value);
	77	selftest(of_update_property(np, prop) == 0,
	78	"Updating a missing property should have passed\n");
	79
	80	/* Remove property - should pass */
	81	selftest(of_remove_property(np, prop) == 0,
	82	"Removing a property should have passed\n");
	83
	84	/* Adding very large property - should pass */
	85	prop++;
	86	prop->name = "large-property-PAGE_SIZEx8";
	87	prop->length = PAGE_SIZE * 8;
	88	prop->value = kzalloc(prop->length, GFP_KERNEL);
	89	selftest(prop->value != NULL, "Unable to allocate large buffer\n");
	90	if (prop->value)
	91	selftest(of_add_property(np, prop) == 0,
	92	"Adding a large property should have passed\n");
	93	}
	94
53a42093 GL	95	static void __init of_selftest_parse_phandle_with_args(void)
	96	{
	97	struct device_node *np;
	98	struct of_phandle_args args;
cabb7d5b	99	int i, rc;
53a42093	100
53a42093 GL	101	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	102	if (!np) {
	103	pr_err("missing testcase data\n");
	104	return;
	105	}
	106
bd69f73f GL	107	rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
	108	selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
	109
f7f951c2	110	for (i = 0; i < 8; i++) {
53a42093 GL	111	bool passed = true;
	112	rc = of_parse_phandle_with_args(np, "phandle-list",
	113	"#phandle-cells", i, &args);
	114
	115	/* Test the values from tests-phandle.dtsi */
	116	switch (i) {
	117	case 0:
	118	passed &= !rc;
	119	passed &= (args.args_count == 1);
	120	passed &= (args.args[0] == (i + 1));
	121	break;
	122	case 1:
	123	passed &= !rc;
	124	passed &= (args.args_count == 2);
	125	passed &= (args.args[0] == (i + 1));
	126	passed &= (args.args[1] == 0);
	127	break;
	128	case 2:
	129	passed &= (rc == -ENOENT);
	130	break;
	131	case 3:
	132	passed &= !rc;
	133	passed &= (args.args_count == 3);
	134	passed &= (args.args[0] == (i + 1));
	135	passed &= (args.args[1] == 4);
	136	passed &= (args.args[2] == 3);
	137	break;
	138	case 4:
	139	passed &= !rc;
	140	passed &= (args.args_count == 2);
	141	passed &= (args.args[0] == (i + 1));
	142	passed &= (args.args[1] == 100);
	143	break;
	144	case 5:
	145	passed &= !rc;
	146	passed &= (args.args_count == 0);
	147	break;
	148	case 6:
	149	passed &= !rc;
	150	passed &= (args.args_count == 1);
	151	passed &= (args.args[0] == (i + 1));
	152	break;
	153	case 7:
cabb7d5b	154	passed &= (rc == -ENOENT);
53a42093 GL	155	break;
	156	default:
	157	passed = false;
	158	}
	159
cabb7d5b GL	160	selftest(passed, "index %i - data error on node %s rc=%i\n",
cabb7d5b GL	161	i, args.np->full_name, rc);
53a42093 GL	162	}
	163
	164	/* Check for missing list property */
	165	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
	166	"#phandle-cells", 0, &args);
cabb7d5b	167	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
bd69f73f GL	168	rc = of_count_phandle_with_args(np, "phandle-list-missing",
	169	"#phandle-cells");
	170	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
53a42093 GL	171
	172	/* Check for missing cells property */
	173	rc = of_parse_phandle_with_args(np, "phandle-list",
	174	"#phandle-cells-missing", 0, &args);
cabb7d5b	175	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
bd69f73f GL	176	rc = of_count_phandle_with_args(np, "phandle-list",
	177	"#phandle-cells-missing");
	178	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
53a42093 GL	179
	180	/* Check for bad phandle in list */
	181	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
	182	"#phandle-cells", 0, &args);
cabb7d5b	183	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
bd69f73f GL	184	rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
	185	"#phandle-cells");
	186	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
53a42093 GL	187
	188	/* Check for incorrectly formed argument list */
	189	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
	190	"#phandle-cells", 1, &args);
cabb7d5b	191	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
bd69f73f GL	192	rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
	193	"#phandle-cells");
	194	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
53a42093 GL	195	}
53a42093 GL	196
7aff0fe3 GL	197	static void __init of_selftest_property_match_string(void)
	198	{
	199	struct device_node *np;
	200	int rc;
	201
7aff0fe3 GL	202	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	203	if (!np) {
	204	pr_err("No testcase data in device tree\n");
	205	return;
	206	}
	207
	208	rc = of_property_match_string(np, "phandle-list-names", "first");
	209	selftest(rc == 0, "first expected:0 got:%i\n", rc);
	210	rc = of_property_match_string(np, "phandle-list-names", "second");
	211	selftest(rc == 1, "second expected:0 got:%i\n", rc);
	212	rc = of_property_match_string(np, "phandle-list-names", "third");
	213	selftest(rc == 2, "third expected:0 got:%i\n", rc);
	214	rc = of_property_match_string(np, "phandle-list-names", "fourth");
	215	selftest(rc == -ENODATA, "unmatched string; rc=%i", rc);
	216	rc = of_property_match_string(np, "missing-property", "blah");
	217	selftest(rc == -EINVAL, "missing property; rc=%i", rc);
	218	rc = of_property_match_string(np, "empty-property", "blah");
	219	selftest(rc == -ENODATA, "empty property; rc=%i", rc);
	220	rc = of_property_match_string(np, "unterminated-string", "blah");
	221	selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);
	222	}
	223
a9f10ca7 GL	224	static void __init of_selftest_parse_interrupts(void)
	225	{
	226	struct device_node *np;
	227	struct of_phandle_args args;
	228	int i, rc;
	229
	230	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
	231	if (!np) {
	232	pr_err("missing testcase data\n");
	233	return;
	234	}
	235
	236	for (i = 0; i < 4; i++) {
	237	bool passed = true;
	238	args.args_count = 0;
	239	rc = of_irq_parse_one(np, i, &args);
	240
	241	passed &= !rc;
	242	passed &= (args.args_count == 1);
	243	passed &= (args.args[0] == (i + 1));
	244
	245	selftest(passed, "index %i - data error on node %s rc=%i\n",
	246	i, args.np->full_name, rc);
	247	}
	248	of_node_put(np);
	249
	250	np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
	251	if (!np) {
	252	pr_err("missing testcase data\n");
	253	return;
	254	}
	255
	256	for (i = 0; i < 4; i++) {
	257	bool passed = true;
	258	args.args_count = 0;
	259	rc = of_irq_parse_one(np, i, &args);
	260
	261	/* Test the values from tests-phandle.dtsi */
	262	switch (i) {
	263	case 0:
	264	passed &= !rc;
	265	passed &= (args.args_count == 1);
	266	passed &= (args.args[0] == 9);
	267	break;
	268	case 1:
	269	passed &= !rc;
	270	passed &= (args.args_count == 3);
	271	passed &= (args.args[0] == 10);
	272	passed &= (args.args[1] == 11);
	273	passed &= (args.args[2] == 12);
	274	break;
	275	case 2:
	276	passed &= !rc;
	277	passed &= (args.args_count == 2);
	278	passed &= (args.args[0] == 13);
	279	passed &= (args.args[1] == 14);
	280	break;
	281	case 3:
	282	passed &= !rc;
	283	passed &= (args.args_count == 2);
	284	passed &= (args.args[0] == 15);
	285	passed &= (args.args[1] == 16);
	286	break;
	287	default:
288	passed = false;
289	}
290	selftest(passed, "index %i - data error on node %s rc=%i\n",
291	i, args.np->full_name, rc);
292	}
293	of_node_put(np);
294	}
295
79d97015 GL	296	static void __init of_selftest_parse_interrupts_extended(void)
	297	{
	298	struct device_node *np;
	299	struct of_phandle_args args;
	300	int i, rc;
	301
	302	np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
	303	if (!np) {
	304	pr_err("missing testcase data\n");
	305	return;
	306	}
	307
	308	for (i = 0; i < 7; i++) {
	309	bool passed = true;
	310	rc = of_irq_parse_one(np, i, &args);
	311
	312	/* Test the values from tests-phandle.dtsi */
	313	switch (i) {
	314	case 0:
	315	passed &= !rc;
	316	passed &= (args.args_count == 1);
	317	passed &= (args.args[0] == 1);
	318	break;
	319	case 1:
	320	passed &= !rc;
	321	passed &= (args.args_count == 3);
	322	passed &= (args.args[0] == 2);
	323	passed &= (args.args[1] == 3);
	324	passed &= (args.args[2] == 4);
	325	break;
	326	case 2:
	327	passed &= !rc;
	328	passed &= (args.args_count == 2);
	329	passed &= (args.args[0] == 5);
	330	passed &= (args.args[1] == 6);
	331	break;
	332	case 3:
	333	passed &= !rc;
	334	passed &= (args.args_count == 1);
	335	passed &= (args.args[0] == 9);
	336	break;
	337	case 4:
	338	passed &= !rc;
	339	passed &= (args.args_count == 3);
	340	passed &= (args.args[0] == 10);
	341	passed &= (args.args[1] == 11);
	342	passed &= (args.args[2] == 12);
	343	break;
	344	case 5:
	345	passed &= !rc;
	346	passed &= (args.args_count == 2);
	347	passed &= (args.args[0] == 13);
	348	passed &= (args.args[1] == 14);
	349	break;
	350	case 6:
	351	passed &= !rc;
	352	passed &= (args.args_count == 1);
	353	passed &= (args.args[0] == 15);
	354	break;
	355	default:
	356	passed = false;
	357	}
	358
	359	selftest(passed, "index %i - data error on node %s rc=%i\n",
360	i, args.np->full_name, rc);
361	}
362	of_node_put(np);
363	}
364
1f42e5dd GL	365	static struct of_device_id match_node_table[] = {
	366	{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
	367	{ .data = "B", .type = "type1", }, /* followed by type alone */
	368
	369	{ .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
	370	{ .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
	371	{ .data = "Cc", .name = "name2", .type = "type2", },
	372
	373	{ .data = "E", .compatible = "compat3" },
	374	{ .data = "G", .compatible = "compat2", },
	375	{ .data = "H", .compatible = "compat2", .name = "name5", },
	376	{ .data = "I", .compatible = "compat2", .type = "type1", },
	377	{ .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
	378	{ .data = "K", .compatible = "compat2", .name = "name9", },
	379	{}
	380	};
	381
	382	static struct {
	383	const char *path;
	384	const char *data;
	385	} match_node_tests[] = {
	386	{ .path = "/testcase-data/match-node/name0", .data = "A", },
	387	{ .path = "/testcase-data/match-node/name1", .data = "B", },
	388	{ .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
	389	{ .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
	390	{ .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
	391	{ .path = "/testcase-data/match-node/name3", .data = "E", },
	392	{ .path = "/testcase-data/match-node/name4", .data = "G", },
	393	{ .path = "/testcase-data/match-node/name5", .data = "H", },
	394	{ .path = "/testcase-data/match-node/name6", .data = "G", },
	395	{ .path = "/testcase-data/match-node/name7", .data = "I", },
	396	{ .path = "/testcase-data/match-node/name8", .data = "J", },
	397	{ .path = "/testcase-data/match-node/name9", .data = "K", },
	398	};
	399
	400	static void __init of_selftest_match_node(void)
	401	{
	402	struct device_node *np;
	403	const struct of_device_id *match;
	404	int i;
	405
	406	for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
	407	np = of_find_node_by_path(match_node_tests[i].path);
	408	if (!np) {
	409	selftest(0, "missing testcase node %s\n",
	410	match_node_tests[i].path);
	411	continue;
	412	}
	413
	414	match = of_match_node(match_node_table, np);
	415	if (!match) {
	416	selftest(0, "%s didn't match anything\n",
	417	match_node_tests[i].path);
	418	continue;
	419	}
	420
	421	if (strcmp(match->data, match_node_tests[i].data) != 0) {
	422	selftest(0, "%s got wrong match. expected %s, got %s\n",
	423	match_node_tests[i].path, match_node_tests[i].data,
	424	(const char *)match->data);
	425	continue;
	426	}
	427	selftest(1, "passed");
	428	}
429	}
430
82c0f589 RH	431	static void __init of_selftest_platform_populate(void)
	432	{
	433	int irq;
	434	struct device_node *np;
	435	struct platform_device *pdev;
	436
	437	np = of_find_node_by_path("/testcase-data");
	438	of_platform_populate(np, of_default_bus_match_table, NULL, NULL);
	439
	440	/* Test that a missing irq domain returns -EPROBE_DEFER */
	441	np = of_find_node_by_path("/testcase-data/testcase-device1");
	442	pdev = of_find_device_by_node(np);
7d1cdc89 RH	443	selftest(pdev, "device 1 creation failed\n");
7d1cdc89 RH	444
82c0f589	445	irq = platform_get_irq(pdev, 0);
7d1cdc89	446	selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
82c0f589 RH	447
	448	/* Test that a parsing failure does not return -EPROBE_DEFER */
	449	np = of_find_node_by_path("/testcase-data/testcase-device2");
	450	pdev = of_find_device_by_node(np);
7d1cdc89	451	selftest(pdev, "device 2 creation failed\n");
82c0f589	452	irq = platform_get_irq(pdev, 0);
7d1cdc89	453	selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
82c0f589	454
82c0f589 RH	455	}
82c0f589 RH	456
53a42093 GL	457	static int __init of_selftest(void)
	458	{
	459	struct device_node *np;
	460
	461	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	462	if (!np) {
	463	pr_info("No testcase data in device tree; not running tests\n");
	464	return 0;
	465	}
	466	of_node_put(np);
	467
	468	pr_info("start of selftest - you will see error messages\n");
7e66c5c7	469	of_selftest_dynamic();
53a42093	470	of_selftest_parse_phandle_with_args();
7aff0fe3	471	of_selftest_property_match_string();
a9f10ca7	472	of_selftest_parse_interrupts();
79d97015	473	of_selftest_parse_interrupts_extended();
1f42e5dd	474	of_selftest_match_node();
82c0f589	475	of_selftest_platform_populate();
a9f10ca7 GL	476	pr_info("end of selftest - %i passed, %i failed\n",
a9f10ca7 GL	477	selftest_results.passed, selftest_results.failed);
53a42093 GL	478	return 0;
	479	}
	480	late_initcall(of_selftest);