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 | ||
7aff0fe3 GL |
123 | static void __init of_selftest_property_match_string(void) |
124 | { | |
125 | struct device_node *np; | |
126 | int rc; | |
127 | ||
128 | pr_info("start\n"); | |
129 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
130 | if (!np) { | |
131 | pr_err("No testcase data in device tree\n"); | |
132 | return; | |
133 | } | |
134 | ||
135 | rc = of_property_match_string(np, "phandle-list-names", "first"); | |
136 | selftest(rc == 0, "first expected:0 got:%i\n", rc); | |
137 | rc = of_property_match_string(np, "phandle-list-names", "second"); | |
138 | selftest(rc == 1, "second expected:0 got:%i\n", rc); | |
139 | rc = of_property_match_string(np, "phandle-list-names", "third"); | |
140 | selftest(rc == 2, "third expected:0 got:%i\n", rc); | |
141 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); | |
142 | selftest(rc == -ENODATA, "unmatched string; rc=%i", rc); | |
143 | rc = of_property_match_string(np, "missing-property", "blah"); | |
144 | selftest(rc == -EINVAL, "missing property; rc=%i", rc); | |
145 | rc = of_property_match_string(np, "empty-property", "blah"); | |
146 | selftest(rc == -ENODATA, "empty property; rc=%i", rc); | |
147 | rc = of_property_match_string(np, "unterminated-string", "blah"); | |
148 | selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc); | |
149 | } | |
150 | ||
53a42093 GL |
151 | static int __init of_selftest(void) |
152 | { | |
153 | struct device_node *np; | |
154 | ||
155 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
156 | if (!np) { | |
157 | pr_info("No testcase data in device tree; not running tests\n"); | |
158 | return 0; | |
159 | } | |
160 | of_node_put(np); | |
161 | ||
162 | pr_info("start of selftest - you will see error messages\n"); | |
163 | of_selftest_parse_phandle_with_args(); | |
7aff0fe3 | 164 | of_selftest_property_match_string(); |
53a42093 GL |
165 | pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL"); |
166 | return 0; | |
167 | } | |
168 | late_initcall(of_selftest); |