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

/*
 * Self tests for device tree subsystem
 */

#define pr_fmt(fmt) "### %s(): " fmt, __func__

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

static bool selftest_passed = true;
#define selftest(result, fmt, ...) { \
	selftest_passed &= (result); \
	if (!(result)) \
		pr_err("FAIL %s:%i " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \
}

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

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

	for (i = 0; i < 7; 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 == -EINVAL);
			break;
		default:
			passed = false;
		}

		if (!passed) {
			int j;
			pr_err("index %i - data error on node %s rc=%i regs=[",
				i, args.np->full_name, rc);
			for (j = 0; j < args.args_count; j++)
				printk(" %i", args.args[j]);
			printk(" ]\n");

			passed_all = false;
		}
	}

	/* Check for missing list property */
	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
					"#phandle-cells", 0, &args);
	passed_all &= (rc == -EINVAL);

	/* Check for missing cells property */
	rc = of_parse_phandle_with_args(np, "phandle-list",
					"#phandle-cells-missing", 0, &args);
	passed_all &= (rc == -EINVAL);

	/* Check for bad phandle in list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
					"#phandle-cells", 0, &args);
	passed_all &= (rc == -EINVAL);

	/* Check for incorrectly formed argument list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
					"#phandle-cells", 1, &args);
	passed_all &= (rc == -EINVAL);

	pr_info("end - %s\n", passed_all ? "PASS" : "FAIL");
}

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_parse_phandle_with_args();
	pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL");
	return 0;
}
late_initcall(of_selftest);
Commit	Line	Data
53a42093 GL	1	/*
	2	* Self tests for device tree subsystem
	3	*/
	4
	5	#define pr_fmt(fmt) "### %s(): " fmt, __func__
	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>
	12	#include <linux/list.h>
	13	#include <linux/mutex.h>
	14	#include <linux/slab.h>
	15	#include <linux/device.h>
	16
	17	static bool selftest_passed = true;
	18	#define selftest(result, fmt, ...) { \
	19	selftest_passed &= (result); \
	20	if (!(result)) \
	21	pr_err("FAIL %s:%i " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \
	22	}
	23
	24	static void __init of_selftest_parse_phandle_with_args(void)
	25	{
	26	struct device_node *np;
	27	struct of_phandle_args args;
	28	int rc, i;
	29	bool passed_all = true;
	30
	31	pr_info("start\n");
	32	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	33	if (!np) {
	34	pr_err("missing testcase data\n");
	35	return;
	36	}
	37
	38	for (i = 0; i < 7; i++) {
	39	bool passed = true;
	40	rc = of_parse_phandle_with_args(np, "phandle-list",
	41	"#phandle-cells", i, &args);
	42
	43	/* Test the values from tests-phandle.dtsi */
	44	switch (i) {
	45	case 0:
	46	passed &= !rc;
	47	passed &= (args.args_count == 1);
	48	passed &= (args.args[0] == (i + 1));
	49	break;
	50	case 1:
	51	passed &= !rc;
	52	passed &= (args.args_count == 2);
	53	passed &= (args.args[0] == (i + 1));
	54	passed &= (args.args[1] == 0);
	55	break;
	56	case 2:
	57	passed &= (rc == -ENOENT);
	58	break;
	59	case 3:
	60	passed &= !rc;
	61	passed &= (args.args_count == 3);
	62	passed &= (args.args[0] == (i + 1));
	63	passed &= (args.args[1] == 4);
	64	passed &= (args.args[2] == 3);
65	break;
66	case 4:
67	passed &= !rc;
68	passed &= (args.args_count == 2);
69	passed &= (args.args[0] == (i + 1));
70	passed &= (args.args[1] == 100);
71	break;
72	case 5:
73	passed &= !rc;
74	passed &= (args.args_count == 0);
75	break;
76	case 6:
77	passed &= !rc;
78	passed &= (args.args_count == 1);
79	passed &= (args.args[0] == (i + 1));
80	break;
81	case 7:
82	passed &= (rc == -EINVAL);
83	break;
84	default:
85	passed = false;
86	}
87
88	if (!passed) {
89	int j;
90	pr_err("index %i - data error on node %s rc=%i regs=[",
91	i, args.np->full_name, rc);
92	for (j = 0; j < args.args_count; j++)
93	printk(" %i", args.args[j]);
94	printk(" ]\n");
95
96	passed_all = false;
97	}
98	}
99
100	/* Check for missing list property */
101	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
102	"#phandle-cells", 0, &args);
103	passed_all &= (rc == -EINVAL);
104
105	/* Check for missing cells property */
106	rc = of_parse_phandle_with_args(np, "phandle-list",
107	"#phandle-cells-missing", 0, &args);
108	passed_all &= (rc == -EINVAL);
109
110	/* Check for bad phandle in list */
111	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
112	"#phandle-cells", 0, &args);
113	passed_all &= (rc == -EINVAL);
114
115	/* Check for incorrectly formed argument list */
116	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
117	"#phandle-cells", 1, &args);
118	passed_all &= (rc == -EINVAL);
119
120	pr_info("end - %s\n", passed_all ? "PASS" : "FAIL");
121	}
122
123	static int __init of_selftest(void)
124	{
125	struct device_node *np;
126
127	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
128	if (!np) {
129	pr_info("No testcase data in device tree; not running tests\n");
130	return 0;
131	}
132	of_node_put(np);
133
134	pr_info("start of selftest - you will see error messages\n");
135	of_selftest_parse_phandle_with_args();
136	pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL");
137	return 0;
138	}
139	late_initcall(of_selftest);