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Commit | Line | Data |
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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> |
53a42093 GL |
13 | #include <linux/list.h> |
14 | #include <linux/mutex.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/device.h> | |
17 | ||
a9f10ca7 GL |
18 | static struct selftest_results { |
19 | int passed; | |
20 | int failed; | |
21 | } selftest_results; | |
22 | ||
53a42093 | 23 | #define selftest(result, fmt, ...) { \ |
cabb7d5b | 24 | if (!(result)) { \ |
a9f10ca7 GL |
25 | selftest_results.failed++; \ |
26 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ | |
cabb7d5b | 27 | } else { \ |
a9f10ca7 GL |
28 | selftest_results.passed++; \ |
29 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ | |
cabb7d5b | 30 | } \ |
53a42093 GL |
31 | } |
32 | ||
33 | static void __init of_selftest_parse_phandle_with_args(void) | |
34 | { | |
35 | struct device_node *np; | |
36 | struct of_phandle_args args; | |
cabb7d5b | 37 | int i, rc; |
53a42093 | 38 | |
53a42093 GL |
39 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
40 | if (!np) { | |
41 | pr_err("missing testcase data\n"); | |
42 | return; | |
43 | } | |
44 | ||
bd69f73f GL |
45 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
46 | selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); | |
47 | ||
f7f951c2 | 48 | for (i = 0; i < 8; i++) { |
53a42093 GL |
49 | bool passed = true; |
50 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
51 | "#phandle-cells", i, &args); | |
52 | ||
53 | /* Test the values from tests-phandle.dtsi */ | |
54 | switch (i) { | |
55 | case 0: | |
56 | passed &= !rc; | |
57 | passed &= (args.args_count == 1); | |
58 | passed &= (args.args[0] == (i + 1)); | |
59 | break; | |
60 | case 1: | |
61 | passed &= !rc; | |
62 | passed &= (args.args_count == 2); | |
63 | passed &= (args.args[0] == (i + 1)); | |
64 | passed &= (args.args[1] == 0); | |
65 | break; | |
66 | case 2: | |
67 | passed &= (rc == -ENOENT); | |
68 | break; | |
69 | case 3: | |
70 | passed &= !rc; | |
71 | passed &= (args.args_count == 3); | |
72 | passed &= (args.args[0] == (i + 1)); | |
73 | passed &= (args.args[1] == 4); | |
74 | passed &= (args.args[2] == 3); | |
75 | break; | |
76 | case 4: | |
77 | passed &= !rc; | |
78 | passed &= (args.args_count == 2); | |
79 | passed &= (args.args[0] == (i + 1)); | |
80 | passed &= (args.args[1] == 100); | |
81 | break; | |
82 | case 5: | |
83 | passed &= !rc; | |
84 | passed &= (args.args_count == 0); | |
85 | break; | |
86 | case 6: | |
87 | passed &= !rc; | |
88 | passed &= (args.args_count == 1); | |
89 | passed &= (args.args[0] == (i + 1)); | |
90 | break; | |
91 | case 7: | |
cabb7d5b | 92 | passed &= (rc == -ENOENT); |
53a42093 GL |
93 | break; |
94 | default: | |
95 | passed = false; | |
96 | } | |
97 | ||
cabb7d5b GL |
98 | selftest(passed, "index %i - data error on node %s rc=%i\n", |
99 | i, args.np->full_name, rc); | |
53a42093 GL |
100 | } |
101 | ||
102 | /* Check for missing list property */ | |
103 | rc = of_parse_phandle_with_args(np, "phandle-list-missing", | |
104 | "#phandle-cells", 0, &args); | |
cabb7d5b | 105 | selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
bd69f73f GL |
106 | rc = of_count_phandle_with_args(np, "phandle-list-missing", |
107 | "#phandle-cells"); | |
108 | selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); | |
53a42093 GL |
109 | |
110 | /* Check for missing cells property */ | |
111 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
112 | "#phandle-cells-missing", 0, &args); | |
cabb7d5b | 113 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
114 | rc = of_count_phandle_with_args(np, "phandle-list", |
115 | "#phandle-cells-missing"); | |
116 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
117 | |
118 | /* Check for bad phandle in list */ | |
119 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", | |
120 | "#phandle-cells", 0, &args); | |
cabb7d5b | 121 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
122 | rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", |
123 | "#phandle-cells"); | |
124 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
125 | |
126 | /* Check for incorrectly formed argument list */ | |
127 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", | |
128 | "#phandle-cells", 1, &args); | |
cabb7d5b | 129 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
130 | rc = of_count_phandle_with_args(np, "phandle-list-bad-args", |
131 | "#phandle-cells"); | |
132 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
133 | } |
134 | ||
7aff0fe3 GL |
135 | static void __init of_selftest_property_match_string(void) |
136 | { | |
137 | struct device_node *np; | |
138 | int rc; | |
139 | ||
7aff0fe3 GL |
140 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
141 | if (!np) { | |
142 | pr_err("No testcase data in device tree\n"); | |
143 | return; | |
144 | } | |
145 | ||
146 | rc = of_property_match_string(np, "phandle-list-names", "first"); | |
147 | selftest(rc == 0, "first expected:0 got:%i\n", rc); | |
148 | rc = of_property_match_string(np, "phandle-list-names", "second"); | |
149 | selftest(rc == 1, "second expected:0 got:%i\n", rc); | |
150 | rc = of_property_match_string(np, "phandle-list-names", "third"); | |
151 | selftest(rc == 2, "third expected:0 got:%i\n", rc); | |
152 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); | |
153 | selftest(rc == -ENODATA, "unmatched string; rc=%i", rc); | |
154 | rc = of_property_match_string(np, "missing-property", "blah"); | |
155 | selftest(rc == -EINVAL, "missing property; rc=%i", rc); | |
156 | rc = of_property_match_string(np, "empty-property", "blah"); | |
157 | selftest(rc == -ENODATA, "empty property; rc=%i", rc); | |
158 | rc = of_property_match_string(np, "unterminated-string", "blah"); | |
159 | selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc); | |
160 | } | |
161 | ||
a9f10ca7 GL |
162 | static void __init of_selftest_parse_interrupts(void) |
163 | { | |
164 | struct device_node *np; | |
165 | struct of_phandle_args args; | |
166 | int i, rc; | |
167 | ||
168 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); | |
169 | if (!np) { | |
170 | pr_err("missing testcase data\n"); | |
171 | return; | |
172 | } | |
173 | ||
174 | for (i = 0; i < 4; i++) { | |
175 | bool passed = true; | |
176 | args.args_count = 0; | |
177 | rc = of_irq_parse_one(np, i, &args); | |
178 | ||
179 | passed &= !rc; | |
180 | passed &= (args.args_count == 1); | |
181 | passed &= (args.args[0] == (i + 1)); | |
182 | ||
183 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
184 | i, args.np->full_name, rc); | |
185 | } | |
186 | of_node_put(np); | |
187 | ||
188 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); | |
189 | if (!np) { | |
190 | pr_err("missing testcase data\n"); | |
191 | return; | |
192 | } | |
193 | ||
194 | for (i = 0; i < 4; i++) { | |
195 | bool passed = true; | |
196 | args.args_count = 0; | |
197 | rc = of_irq_parse_one(np, i, &args); | |
198 | ||
199 | /* Test the values from tests-phandle.dtsi */ | |
200 | switch (i) { | |
201 | case 0: | |
202 | passed &= !rc; | |
203 | passed &= (args.args_count == 1); | |
204 | passed &= (args.args[0] == 9); | |
205 | break; | |
206 | case 1: | |
207 | passed &= !rc; | |
208 | passed &= (args.args_count == 3); | |
209 | passed &= (args.args[0] == 10); | |
210 | passed &= (args.args[1] == 11); | |
211 | passed &= (args.args[2] == 12); | |
212 | break; | |
213 | case 2: | |
214 | passed &= !rc; | |
215 | passed &= (args.args_count == 2); | |
216 | passed &= (args.args[0] == 13); | |
217 | passed &= (args.args[1] == 14); | |
218 | break; | |
219 | case 3: | |
220 | passed &= !rc; | |
221 | passed &= (args.args_count == 2); | |
222 | passed &= (args.args[0] == 15); | |
223 | passed &= (args.args[1] == 16); | |
224 | break; | |
225 | default: | |
226 | passed = false; | |
227 | } | |
228 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
229 | i, args.np->full_name, rc); | |
230 | } | |
231 | of_node_put(np); | |
232 | } | |
233 | ||
79d97015 GL |
234 | static void __init of_selftest_parse_interrupts_extended(void) |
235 | { | |
236 | struct device_node *np; | |
237 | struct of_phandle_args args; | |
238 | int i, rc; | |
239 | ||
240 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); | |
241 | if (!np) { | |
242 | pr_err("missing testcase data\n"); | |
243 | return; | |
244 | } | |
245 | ||
246 | for (i = 0; i < 7; i++) { | |
247 | bool passed = true; | |
248 | rc = of_irq_parse_one(np, i, &args); | |
249 | ||
250 | /* Test the values from tests-phandle.dtsi */ | |
251 | switch (i) { | |
252 | case 0: | |
253 | passed &= !rc; | |
254 | passed &= (args.args_count == 1); | |
255 | passed &= (args.args[0] == 1); | |
256 | break; | |
257 | case 1: | |
258 | passed &= !rc; | |
259 | passed &= (args.args_count == 3); | |
260 | passed &= (args.args[0] == 2); | |
261 | passed &= (args.args[1] == 3); | |
262 | passed &= (args.args[2] == 4); | |
263 | break; | |
264 | case 2: | |
265 | passed &= !rc; | |
266 | passed &= (args.args_count == 2); | |
267 | passed &= (args.args[0] == 5); | |
268 | passed &= (args.args[1] == 6); | |
269 | break; | |
270 | case 3: | |
271 | passed &= !rc; | |
272 | passed &= (args.args_count == 1); | |
273 | passed &= (args.args[0] == 9); | |
274 | break; | |
275 | case 4: | |
276 | passed &= !rc; | |
277 | passed &= (args.args_count == 3); | |
278 | passed &= (args.args[0] == 10); | |
279 | passed &= (args.args[1] == 11); | |
280 | passed &= (args.args[2] == 12); | |
281 | break; | |
282 | case 5: | |
283 | passed &= !rc; | |
284 | passed &= (args.args_count == 2); | |
285 | passed &= (args.args[0] == 13); | |
286 | passed &= (args.args[1] == 14); | |
287 | break; | |
288 | case 6: | |
289 | passed &= !rc; | |
290 | passed &= (args.args_count == 1); | |
291 | passed &= (args.args[0] == 15); | |
292 | break; | |
293 | default: | |
294 | passed = false; | |
295 | } | |
296 | ||
297 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
298 | i, args.np->full_name, rc); | |
299 | } | |
300 | of_node_put(np); | |
301 | } | |
302 | ||
1f42e5dd GL |
303 | static struct of_device_id match_node_table[] = { |
304 | { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ | |
305 | { .data = "B", .type = "type1", }, /* followed by type alone */ | |
306 | ||
307 | { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ | |
308 | { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ | |
309 | { .data = "Cc", .name = "name2", .type = "type2", }, | |
310 | ||
311 | { .data = "E", .compatible = "compat3" }, | |
312 | { .data = "G", .compatible = "compat2", }, | |
313 | { .data = "H", .compatible = "compat2", .name = "name5", }, | |
314 | { .data = "I", .compatible = "compat2", .type = "type1", }, | |
315 | { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, | |
316 | { .data = "K", .compatible = "compat2", .name = "name9", }, | |
317 | {} | |
318 | }; | |
319 | ||
320 | static struct { | |
321 | const char *path; | |
322 | const char *data; | |
323 | } match_node_tests[] = { | |
324 | { .path = "/testcase-data/match-node/name0", .data = "A", }, | |
325 | { .path = "/testcase-data/match-node/name1", .data = "B", }, | |
326 | { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, | |
327 | { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, | |
328 | { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, | |
329 | { .path = "/testcase-data/match-node/name3", .data = "E", }, | |
330 | { .path = "/testcase-data/match-node/name4", .data = "G", }, | |
331 | { .path = "/testcase-data/match-node/name5", .data = "H", }, | |
332 | { .path = "/testcase-data/match-node/name6", .data = "G", }, | |
333 | { .path = "/testcase-data/match-node/name7", .data = "I", }, | |
334 | { .path = "/testcase-data/match-node/name8", .data = "J", }, | |
335 | { .path = "/testcase-data/match-node/name9", .data = "K", }, | |
336 | }; | |
337 | ||
338 | static void __init of_selftest_match_node(void) | |
339 | { | |
340 | struct device_node *np; | |
341 | const struct of_device_id *match; | |
342 | int i; | |
343 | ||
344 | for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { | |
345 | np = of_find_node_by_path(match_node_tests[i].path); | |
346 | if (!np) { | |
347 | selftest(0, "missing testcase node %s\n", | |
348 | match_node_tests[i].path); | |
349 | continue; | |
350 | } | |
351 | ||
352 | match = of_match_node(match_node_table, np); | |
353 | if (!match) { | |
354 | selftest(0, "%s didn't match anything\n", | |
355 | match_node_tests[i].path); | |
356 | continue; | |
357 | } | |
358 | ||
359 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
360 | selftest(0, "%s got wrong match. expected %s, got %s\n", | |
361 | match_node_tests[i].path, match_node_tests[i].data, | |
362 | (const char *)match->data); | |
363 | continue; | |
364 | } | |
365 | selftest(1, "passed"); | |
366 | } | |
367 | } | |
368 | ||
53a42093 GL |
369 | static int __init of_selftest(void) |
370 | { | |
371 | struct device_node *np; | |
372 | ||
373 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
374 | if (!np) { | |
375 | pr_info("No testcase data in device tree; not running tests\n"); | |
376 | return 0; | |
377 | } | |
378 | of_node_put(np); | |
379 | ||
380 | pr_info("start of selftest - you will see error messages\n"); | |
381 | of_selftest_parse_phandle_with_args(); | |
7aff0fe3 | 382 | of_selftest_property_match_string(); |
a9f10ca7 | 383 | of_selftest_parse_interrupts(); |
79d97015 | 384 | of_selftest_parse_interrupts_extended(); |
1f42e5dd | 385 | of_selftest_match_node(); |
a9f10ca7 GL |
386 | pr_info("end of selftest - %i passed, %i failed\n", |
387 | selftest_results.passed, selftest_results.failed); | |
53a42093 GL |
388 | return 0; |
389 | } | |
390 | late_initcall(of_selftest); |