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> | |
841ec213 | 10 | #include <linux/hashtable.h> |
53a42093 GL |
11 | #include <linux/module.h> |
12 | #include <linux/of.h> | |
ae9304c9 | 13 | #include <linux/of_fdt.h> |
a9f10ca7 | 14 | #include <linux/of_irq.h> |
82c0f589 | 15 | #include <linux/of_platform.h> |
53a42093 GL |
16 | #include <linux/list.h> |
17 | #include <linux/mutex.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/device.h> | |
177d271c PA |
20 | #include <linux/platform_device.h> |
21 | #include <linux/of_platform.h> | |
53a42093 | 22 | |
d5e75500 PA |
23 | #include <linux/i2c.h> |
24 | #include <linux/i2c-mux.h> | |
25 | ||
492a22ac PA |
26 | #include <linux/bitops.h> |
27 | ||
69843396 PA |
28 | #include "of_private.h" |
29 | ||
9697a559 | 30 | static struct unittest_results { |
a9f10ca7 GL |
31 | int passed; |
32 | int failed; | |
9697a559 | 33 | } unittest_results; |
a9f10ca7 | 34 | |
9697a559 | 35 | #define unittest(result, fmt, ...) ({ \ |
851da976 GL |
36 | bool failed = !(result); \ |
37 | if (failed) { \ | |
9697a559 | 38 | unittest_results.failed++; \ |
a9f10ca7 | 39 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ |
cabb7d5b | 40 | } else { \ |
9697a559 | 41 | unittest_results.passed++; \ |
a9f10ca7 | 42 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ |
cabb7d5b | 43 | } \ |
851da976 GL |
44 | failed; \ |
45 | }) | |
53a42093 | 46 | |
9697a559 | 47 | static void __init of_unittest_find_node_by_name(void) |
ae91ff72 GL |
48 | { |
49 | struct device_node *np; | |
75c28c09 | 50 | const char *options; |
ae91ff72 GL |
51 | |
52 | np = of_find_node_by_path("/testcase-data"); | |
9697a559 | 53 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
54 | "find /testcase-data failed\n"); |
55 | of_node_put(np); | |
56 | ||
57 | /* Test if trailing '/' works */ | |
58 | np = of_find_node_by_path("/testcase-data/"); | |
9697a559 | 59 | unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); |
ae91ff72 GL |
60 | |
61 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
9697a559 | 62 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
63 | "find /testcase-data/phandle-tests/consumer-a failed\n"); |
64 | of_node_put(np); | |
65 | ||
66 | np = of_find_node_by_path("testcase-alias"); | |
9697a559 | 67 | unittest(np && !strcmp("/testcase-data", np->full_name), |
ae91ff72 GL |
68 | "find testcase-alias failed\n"); |
69 | of_node_put(np); | |
70 | ||
71 | /* Test if trailing '/' works on aliases */ | |
72 | np = of_find_node_by_path("testcase-alias/"); | |
9697a559 | 73 | unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); |
ae91ff72 GL |
74 | |
75 | np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); | |
9697a559 | 76 | unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), |
ae91ff72 GL |
77 | "find testcase-alias/phandle-tests/consumer-a failed\n"); |
78 | of_node_put(np); | |
79 | ||
80 | np = of_find_node_by_path("/testcase-data/missing-path"); | |
9697a559 | 81 | unittest(!np, "non-existent path returned node %s\n", np->full_name); |
ae91ff72 GL |
82 | of_node_put(np); |
83 | ||
84 | np = of_find_node_by_path("missing-alias"); | |
9697a559 | 85 | unittest(!np, "non-existent alias returned node %s\n", np->full_name); |
ae91ff72 GL |
86 | of_node_put(np); |
87 | ||
88 | np = of_find_node_by_path("testcase-alias/missing-path"); | |
9697a559 | 89 | unittest(!np, "non-existent alias with relative path returned node %s\n", np->full_name); |
ae91ff72 | 90 | of_node_put(np); |
75c28c09 LL |
91 | |
92 | np = of_find_node_opts_by_path("/testcase-data:testoption", &options); | |
9697a559 | 93 | unittest(np && !strcmp("testoption", options), |
75c28c09 LL |
94 | "option path test failed\n"); |
95 | of_node_put(np); | |
96 | ||
8cbba1ab | 97 | np = of_find_node_opts_by_path("/testcase-data:test/option", &options); |
9697a559 | 98 | unittest(np && !strcmp("test/option", options), |
8cbba1ab PH |
99 | "option path test, subcase #1 failed\n"); |
100 | of_node_put(np); | |
101 | ||
5ca1b0dd | 102 | np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); |
9697a559 | 103 | unittest(np && !strcmp("test/option", options), |
5ca1b0dd BN |
104 | "option path test, subcase #2 failed\n"); |
105 | of_node_put(np); | |
106 | ||
75c28c09 | 107 | np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); |
9697a559 | 108 | unittest(np, "NULL option path test failed\n"); |
75c28c09 LL |
109 | of_node_put(np); |
110 | ||
111 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", | |
112 | &options); | |
9697a559 | 113 | unittest(np && !strcmp("testaliasoption", options), |
75c28c09 LL |
114 | "option alias path test failed\n"); |
115 | of_node_put(np); | |
116 | ||
8cbba1ab PH |
117 | np = of_find_node_opts_by_path("testcase-alias:test/alias/option", |
118 | &options); | |
9697a559 | 119 | unittest(np && !strcmp("test/alias/option", options), |
8cbba1ab PH |
120 | "option alias path test, subcase #1 failed\n"); |
121 | of_node_put(np); | |
122 | ||
75c28c09 | 123 | np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); |
9697a559 | 124 | unittest(np, "NULL option alias path test failed\n"); |
75c28c09 LL |
125 | of_node_put(np); |
126 | ||
127 | options = "testoption"; | |
128 | np = of_find_node_opts_by_path("testcase-alias", &options); | |
9697a559 | 129 | unittest(np && !options, "option clearing test failed\n"); |
75c28c09 LL |
130 | of_node_put(np); |
131 | ||
132 | options = "testoption"; | |
133 | np = of_find_node_opts_by_path("/", &options); | |
9697a559 | 134 | unittest(np && !options, "option clearing root node test failed\n"); |
75c28c09 | 135 | of_node_put(np); |
ae91ff72 GL |
136 | } |
137 | ||
9697a559 | 138 | static void __init of_unittest_dynamic(void) |
7e66c5c7 GL |
139 | { |
140 | struct device_node *np; | |
141 | struct property *prop; | |
142 | ||
143 | np = of_find_node_by_path("/testcase-data"); | |
144 | if (!np) { | |
145 | pr_err("missing testcase data\n"); | |
146 | return; | |
147 | } | |
148 | ||
149 | /* Array of 4 properties for the purpose of testing */ | |
150 | prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL); | |
151 | if (!prop) { | |
9697a559 | 152 | unittest(0, "kzalloc() failed\n"); |
7e66c5c7 GL |
153 | return; |
154 | } | |
155 | ||
156 | /* Add a new property - should pass*/ | |
157 | prop->name = "new-property"; | |
158 | prop->value = "new-property-data"; | |
159 | prop->length = strlen(prop->value); | |
9697a559 | 160 | unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); |
7e66c5c7 GL |
161 | |
162 | /* Try to add an existing property - should fail */ | |
163 | prop++; | |
164 | prop->name = "new-property"; | |
165 | prop->value = "new-property-data-should-fail"; | |
166 | prop->length = strlen(prop->value); | |
9697a559 | 167 | unittest(of_add_property(np, prop) != 0, |
7e66c5c7 GL |
168 | "Adding an existing property should have failed\n"); |
169 | ||
170 | /* Try to modify an existing property - should pass */ | |
171 | prop->value = "modify-property-data-should-pass"; | |
172 | prop->length = strlen(prop->value); | |
9697a559 | 173 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
174 | "Updating an existing property should have passed\n"); |
175 | ||
176 | /* Try to modify non-existent property - should pass*/ | |
177 | prop++; | |
178 | prop->name = "modify-property"; | |
179 | prop->value = "modify-missing-property-data-should-pass"; | |
180 | prop->length = strlen(prop->value); | |
9697a559 | 181 | unittest(of_update_property(np, prop) == 0, |
7e66c5c7 GL |
182 | "Updating a missing property should have passed\n"); |
183 | ||
184 | /* Remove property - should pass */ | |
9697a559 | 185 | unittest(of_remove_property(np, prop) == 0, |
7e66c5c7 GL |
186 | "Removing a property should have passed\n"); |
187 | ||
188 | /* Adding very large property - should pass */ | |
189 | prop++; | |
190 | prop->name = "large-property-PAGE_SIZEx8"; | |
191 | prop->length = PAGE_SIZE * 8; | |
192 | prop->value = kzalloc(prop->length, GFP_KERNEL); | |
9697a559 | 193 | unittest(prop->value != NULL, "Unable to allocate large buffer\n"); |
7e66c5c7 | 194 | if (prop->value) |
9697a559 | 195 | unittest(of_add_property(np, prop) == 0, |
7e66c5c7 GL |
196 | "Adding a large property should have passed\n"); |
197 | } | |
198 | ||
9697a559 | 199 | static int __init of_unittest_check_node_linkage(struct device_node *np) |
f2051d6a | 200 | { |
5063e25a | 201 | struct device_node *child; |
f2051d6a GL |
202 | int count = 0, rc; |
203 | ||
204 | for_each_child_of_node(np, child) { | |
205 | if (child->parent != np) { | |
206 | pr_err("Child node %s links to wrong parent %s\n", | |
207 | child->name, np->name); | |
855ff287 JL |
208 | rc = -EINVAL; |
209 | goto put_child; | |
f2051d6a GL |
210 | } |
211 | ||
9697a559 | 212 | rc = of_unittest_check_node_linkage(child); |
f2051d6a | 213 | if (rc < 0) |
855ff287 | 214 | goto put_child; |
f2051d6a GL |
215 | count += rc; |
216 | } | |
217 | ||
218 | return count + 1; | |
855ff287 JL |
219 | put_child: |
220 | of_node_put(child); | |
221 | return rc; | |
f2051d6a GL |
222 | } |
223 | ||
9697a559 | 224 | static void __init of_unittest_check_tree_linkage(void) |
f2051d6a GL |
225 | { |
226 | struct device_node *np; | |
227 | int allnode_count = 0, child_count; | |
228 | ||
5063e25a | 229 | if (!of_root) |
f2051d6a GL |
230 | return; |
231 | ||
232 | for_each_of_allnodes(np) | |
233 | allnode_count++; | |
9697a559 | 234 | child_count = of_unittest_check_node_linkage(of_root); |
f2051d6a | 235 | |
9697a559 | 236 | unittest(child_count > 0, "Device node data structure is corrupted\n"); |
a2166ca5 | 237 | unittest(child_count == allnode_count, |
a6bb121e FR |
238 | "allnodes list size (%i) doesn't match sibling lists size (%i)\n", |
239 | allnode_count, child_count); | |
f2051d6a GL |
240 | pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); |
241 | } | |
242 | ||
841ec213 GL |
243 | struct node_hash { |
244 | struct hlist_node node; | |
245 | struct device_node *np; | |
246 | }; | |
247 | ||
2118f4b8 | 248 | static DEFINE_HASHTABLE(phandle_ht, 8); |
9697a559 | 249 | static void __init of_unittest_check_phandles(void) |
841ec213 GL |
250 | { |
251 | struct device_node *np; | |
252 | struct node_hash *nh; | |
253 | struct hlist_node *tmp; | |
254 | int i, dup_count = 0, phandle_count = 0; | |
841ec213 | 255 | |
841ec213 GL |
256 | for_each_of_allnodes(np) { |
257 | if (!np->phandle) | |
258 | continue; | |
259 | ||
2118f4b8 | 260 | hash_for_each_possible(phandle_ht, nh, node, np->phandle) { |
841ec213 GL |
261 | if (nh->np->phandle == np->phandle) { |
262 | pr_info("Duplicate phandle! %i used by %s and %s\n", | |
263 | np->phandle, nh->np->full_name, np->full_name); | |
264 | dup_count++; | |
265 | break; | |
266 | } | |
267 | } | |
268 | ||
269 | nh = kzalloc(sizeof(*nh), GFP_KERNEL); | |
270 | if (WARN_ON(!nh)) | |
271 | return; | |
272 | ||
273 | nh->np = np; | |
2118f4b8 | 274 | hash_add(phandle_ht, &nh->node, np->phandle); |
841ec213 GL |
275 | phandle_count++; |
276 | } | |
9697a559 | 277 | unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", |
841ec213 GL |
278 | dup_count, phandle_count); |
279 | ||
280 | /* Clean up */ | |
2118f4b8 | 281 | hash_for_each_safe(phandle_ht, i, tmp, nh, node) { |
841ec213 GL |
282 | hash_del(&nh->node); |
283 | kfree(nh); | |
284 | } | |
285 | } | |
286 | ||
9697a559 | 287 | static void __init of_unittest_parse_phandle_with_args(void) |
53a42093 GL |
288 | { |
289 | struct device_node *np; | |
290 | struct of_phandle_args args; | |
cabb7d5b | 291 | int i, rc; |
53a42093 | 292 | |
53a42093 GL |
293 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
294 | if (!np) { | |
295 | pr_err("missing testcase data\n"); | |
296 | return; | |
297 | } | |
298 | ||
bd69f73f | 299 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
9697a559 | 300 | unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); |
bd69f73f | 301 | |
f7f951c2 | 302 | for (i = 0; i < 8; i++) { |
53a42093 | 303 | bool passed = true; |
3db316d0 | 304 | |
53a42093 GL |
305 | rc = of_parse_phandle_with_args(np, "phandle-list", |
306 | "#phandle-cells", i, &args); | |
307 | ||
308 | /* Test the values from tests-phandle.dtsi */ | |
309 | switch (i) { | |
310 | case 0: | |
311 | passed &= !rc; | |
312 | passed &= (args.args_count == 1); | |
313 | passed &= (args.args[0] == (i + 1)); | |
314 | break; | |
315 | case 1: | |
316 | passed &= !rc; | |
317 | passed &= (args.args_count == 2); | |
318 | passed &= (args.args[0] == (i + 1)); | |
319 | passed &= (args.args[1] == 0); | |
320 | break; | |
321 | case 2: | |
322 | passed &= (rc == -ENOENT); | |
323 | break; | |
324 | case 3: | |
325 | passed &= !rc; | |
326 | passed &= (args.args_count == 3); | |
327 | passed &= (args.args[0] == (i + 1)); | |
328 | passed &= (args.args[1] == 4); | |
329 | passed &= (args.args[2] == 3); | |
330 | break; | |
331 | case 4: | |
332 | passed &= !rc; | |
333 | passed &= (args.args_count == 2); | |
334 | passed &= (args.args[0] == (i + 1)); | |
335 | passed &= (args.args[1] == 100); | |
336 | break; | |
337 | case 5: | |
338 | passed &= !rc; | |
339 | passed &= (args.args_count == 0); | |
340 | break; | |
341 | case 6: | |
342 | passed &= !rc; | |
343 | passed &= (args.args_count == 1); | |
344 | passed &= (args.args[0] == (i + 1)); | |
345 | break; | |
346 | case 7: | |
cabb7d5b | 347 | passed &= (rc == -ENOENT); |
53a42093 GL |
348 | break; |
349 | default: | |
350 | passed = false; | |
351 | } | |
352 | ||
9697a559 | 353 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
cabb7d5b | 354 | i, args.np->full_name, rc); |
53a42093 GL |
355 | } |
356 | ||
357 | /* Check for missing list property */ | |
358 | rc = of_parse_phandle_with_args(np, "phandle-list-missing", | |
359 | "#phandle-cells", 0, &args); | |
9697a559 | 360 | unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
bd69f73f GL |
361 | rc = of_count_phandle_with_args(np, "phandle-list-missing", |
362 | "#phandle-cells"); | |
9697a559 | 363 | unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
53a42093 GL |
364 | |
365 | /* Check for missing cells property */ | |
366 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
367 | "#phandle-cells-missing", 0, &args); | |
9697a559 | 368 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
369 | rc = of_count_phandle_with_args(np, "phandle-list", |
370 | "#phandle-cells-missing"); | |
9697a559 | 371 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
372 | |
373 | /* Check for bad phandle in list */ | |
374 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", | |
375 | "#phandle-cells", 0, &args); | |
9697a559 | 376 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
377 | rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", |
378 | "#phandle-cells"); | |
9697a559 | 379 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
380 | |
381 | /* Check for incorrectly formed argument list */ | |
382 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", | |
383 | "#phandle-cells", 1, &args); | |
9697a559 | 384 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
385 | rc = of_count_phandle_with_args(np, "phandle-list-bad-args", |
386 | "#phandle-cells"); | |
9697a559 | 387 | unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
53a42093 GL |
388 | } |
389 | ||
9697a559 | 390 | static void __init of_unittest_property_string(void) |
7aff0fe3 | 391 | { |
a87fa1d8 | 392 | const char *strings[4]; |
7aff0fe3 GL |
393 | struct device_node *np; |
394 | int rc; | |
395 | ||
7aff0fe3 GL |
396 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
397 | if (!np) { | |
398 | pr_err("No testcase data in device tree\n"); | |
399 | return; | |
400 | } | |
401 | ||
402 | rc = of_property_match_string(np, "phandle-list-names", "first"); | |
9697a559 | 403 | unittest(rc == 0, "first expected:0 got:%i\n", rc); |
7aff0fe3 | 404 | rc = of_property_match_string(np, "phandle-list-names", "second"); |
9697a559 | 405 | unittest(rc == 1, "second expected:1 got:%i\n", rc); |
7aff0fe3 | 406 | rc = of_property_match_string(np, "phandle-list-names", "third"); |
9697a559 | 407 | unittest(rc == 2, "third expected:2 got:%i\n", rc); |
7aff0fe3 | 408 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); |
9697a559 | 409 | unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); |
7aff0fe3 | 410 | rc = of_property_match_string(np, "missing-property", "blah"); |
9697a559 | 411 | unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); |
7aff0fe3 | 412 | rc = of_property_match_string(np, "empty-property", "blah"); |
9697a559 | 413 | unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); |
7aff0fe3 | 414 | rc = of_property_match_string(np, "unterminated-string", "blah"); |
9697a559 | 415 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 GL |
416 | |
417 | /* of_property_count_strings() tests */ | |
418 | rc = of_property_count_strings(np, "string-property"); | |
9697a559 | 419 | unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 420 | rc = of_property_count_strings(np, "phandle-list-names"); |
9697a559 | 421 | unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 422 | rc = of_property_count_strings(np, "unterminated-string"); |
9697a559 | 423 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 | 424 | rc = of_property_count_strings(np, "unterminated-string-list"); |
9697a559 | 425 | unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); |
a87fa1d8 GL |
426 | |
427 | /* of_property_read_string_index() tests */ | |
428 | rc = of_property_read_string_index(np, "string-property", 0, strings); | |
9697a559 | 429 | unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
430 | strings[0] = NULL; |
431 | rc = of_property_read_string_index(np, "string-property", 1, strings); | |
9697a559 | 432 | unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 433 | rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); |
9697a559 | 434 | unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 435 | rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); |
9697a559 | 436 | unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 437 | rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); |
9697a559 | 438 | unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
439 | strings[0] = NULL; |
440 | rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); | |
9697a559 | 441 | unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
442 | strings[0] = NULL; |
443 | rc = of_property_read_string_index(np, "unterminated-string", 0, strings); | |
9697a559 | 444 | unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 | 445 | rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); |
9697a559 | 446 | unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
447 | strings[0] = NULL; |
448 | rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ | |
9697a559 | 449 | unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); |
a87fa1d8 GL |
450 | strings[1] = NULL; |
451 | ||
452 | /* of_property_read_string_array() tests */ | |
453 | rc = of_property_read_string_array(np, "string-property", strings, 4); | |
9697a559 | 454 | unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 455 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); |
9697a559 | 456 | unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); |
a87fa1d8 | 457 | rc = of_property_read_string_array(np, "unterminated-string", strings, 4); |
9697a559 | 458 | unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
a87fa1d8 GL |
459 | /* -- An incorrectly formed string should cause a failure */ |
460 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); | |
9697a559 | 461 | unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); |
a87fa1d8 GL |
462 | /* -- parsing the correctly formed strings should still work: */ |
463 | strings[2] = NULL; | |
464 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); | |
9697a559 | 465 | unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); |
a87fa1d8 GL |
466 | strings[1] = NULL; |
467 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); | |
9697a559 | 468 | unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); |
7aff0fe3 GL |
469 | } |
470 | ||
69843396 PA |
471 | #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ |
472 | (p1)->value && (p2)->value && \ | |
473 | !memcmp((p1)->value, (p2)->value, (p1)->length) && \ | |
474 | !strcmp((p1)->name, (p2)->name)) | |
9697a559 | 475 | static void __init of_unittest_property_copy(void) |
69843396 PA |
476 | { |
477 | #ifdef CONFIG_OF_DYNAMIC | |
478 | struct property p1 = { .name = "p1", .length = 0, .value = "" }; | |
479 | struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; | |
480 | struct property *new; | |
481 | ||
482 | new = __of_prop_dup(&p1, GFP_KERNEL); | |
9697a559 | 483 | unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); |
69843396 PA |
484 | kfree(new->value); |
485 | kfree(new->name); | |
486 | kfree(new); | |
487 | ||
488 | new = __of_prop_dup(&p2, GFP_KERNEL); | |
9697a559 | 489 | unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); |
69843396 PA |
490 | kfree(new->value); |
491 | kfree(new->name); | |
492 | kfree(new); | |
493 | #endif | |
494 | } | |
495 | ||
9697a559 | 496 | static void __init of_unittest_changeset(void) |
201c910b PA |
497 | { |
498 | #ifdef CONFIG_OF_DYNAMIC | |
499 | struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" }; | |
500 | struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; | |
501 | struct property *ppremove; | |
e5179581 | 502 | struct device_node *n1, *n2, *n21, *nremove, *parent, *np; |
201c910b PA |
503 | struct of_changeset chgset; |
504 | ||
e5179581 | 505 | n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1"); |
9697a559 | 506 | unittest(n1, "testcase setup failure\n"); |
e5179581 | 507 | n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2"); |
9697a559 | 508 | unittest(n2, "testcase setup failure\n"); |
e5179581 | 509 | n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21"); |
9697a559 | 510 | unittest(n21, "testcase setup failure %p\n", n21); |
201c910b | 511 | nremove = of_find_node_by_path("/testcase-data/changeset/node-remove"); |
9697a559 | 512 | unittest(nremove, "testcase setup failure\n"); |
201c910b | 513 | ppadd = __of_prop_dup(&padd, GFP_KERNEL); |
9697a559 | 514 | unittest(ppadd, "testcase setup failure\n"); |
201c910b | 515 | ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); |
9697a559 | 516 | unittest(ppupdate, "testcase setup failure\n"); |
201c910b PA |
517 | parent = nremove->parent; |
518 | n1->parent = parent; | |
519 | n2->parent = parent; | |
520 | n21->parent = n2; | |
521 | n2->child = n21; | |
522 | ppremove = of_find_property(parent, "prop-remove", NULL); | |
9697a559 | 523 | unittest(ppremove, "failed to find removal prop"); |
201c910b PA |
524 | |
525 | of_changeset_init(&chgset); | |
9697a559 WL |
526 | unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); |
527 | unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); | |
528 | unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); | |
529 | unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); | |
530 | unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n"); | |
531 | unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); | |
532 | unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); | |
201c910b | 533 | mutex_lock(&of_mutex); |
9697a559 | 534 | unittest(!of_changeset_apply(&chgset), "apply failed\n"); |
201c910b PA |
535 | mutex_unlock(&of_mutex); |
536 | ||
e5179581 | 537 | /* Make sure node names are constructed correctly */ |
9697a559 | 538 | unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), |
e5179581 | 539 | "'%s' not added\n", n21->full_name); |
c46ca3c8 | 540 | of_node_put(np); |
e5179581 | 541 | |
201c910b | 542 | mutex_lock(&of_mutex); |
9697a559 | 543 | unittest(!of_changeset_revert(&chgset), "revert failed\n"); |
201c910b PA |
544 | mutex_unlock(&of_mutex); |
545 | ||
546 | of_changeset_destroy(&chgset); | |
547 | #endif | |
548 | } | |
549 | ||
9697a559 | 550 | static void __init of_unittest_parse_interrupts(void) |
a9f10ca7 GL |
551 | { |
552 | struct device_node *np; | |
553 | struct of_phandle_args args; | |
554 | int i, rc; | |
555 | ||
556 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); | |
557 | if (!np) { | |
558 | pr_err("missing testcase data\n"); | |
559 | return; | |
560 | } | |
561 | ||
562 | for (i = 0; i < 4; i++) { | |
563 | bool passed = true; | |
3db316d0 | 564 | |
a9f10ca7 GL |
565 | args.args_count = 0; |
566 | rc = of_irq_parse_one(np, i, &args); | |
567 | ||
568 | passed &= !rc; | |
569 | passed &= (args.args_count == 1); | |
570 | passed &= (args.args[0] == (i + 1)); | |
571 | ||
9697a559 | 572 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
573 | i, args.np->full_name, rc); |
574 | } | |
575 | of_node_put(np); | |
576 | ||
577 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); | |
578 | if (!np) { | |
579 | pr_err("missing testcase data\n"); | |
580 | return; | |
581 | } | |
582 | ||
583 | for (i = 0; i < 4; i++) { | |
584 | bool passed = true; | |
3db316d0 | 585 | |
a9f10ca7 GL |
586 | args.args_count = 0; |
587 | rc = of_irq_parse_one(np, i, &args); | |
588 | ||
589 | /* Test the values from tests-phandle.dtsi */ | |
590 | switch (i) { | |
591 | case 0: | |
592 | passed &= !rc; | |
593 | passed &= (args.args_count == 1); | |
594 | passed &= (args.args[0] == 9); | |
595 | break; | |
596 | case 1: | |
597 | passed &= !rc; | |
598 | passed &= (args.args_count == 3); | |
599 | passed &= (args.args[0] == 10); | |
600 | passed &= (args.args[1] == 11); | |
601 | passed &= (args.args[2] == 12); | |
602 | break; | |
603 | case 2: | |
604 | passed &= !rc; | |
605 | passed &= (args.args_count == 2); | |
606 | passed &= (args.args[0] == 13); | |
607 | passed &= (args.args[1] == 14); | |
608 | break; | |
609 | case 3: | |
610 | passed &= !rc; | |
611 | passed &= (args.args_count == 2); | |
612 | passed &= (args.args[0] == 15); | |
613 | passed &= (args.args[1] == 16); | |
614 | break; | |
615 | default: | |
616 | passed = false; | |
617 | } | |
9697a559 | 618 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
a9f10ca7 GL |
619 | i, args.np->full_name, rc); |
620 | } | |
621 | of_node_put(np); | |
622 | } | |
623 | ||
9697a559 | 624 | static void __init of_unittest_parse_interrupts_extended(void) |
79d97015 GL |
625 | { |
626 | struct device_node *np; | |
627 | struct of_phandle_args args; | |
628 | int i, rc; | |
629 | ||
630 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); | |
631 | if (!np) { | |
632 | pr_err("missing testcase data\n"); | |
633 | return; | |
634 | } | |
635 | ||
636 | for (i = 0; i < 7; i++) { | |
637 | bool passed = true; | |
3db316d0 | 638 | |
79d97015 GL |
639 | rc = of_irq_parse_one(np, i, &args); |
640 | ||
641 | /* Test the values from tests-phandle.dtsi */ | |
642 | switch (i) { | |
643 | case 0: | |
644 | passed &= !rc; | |
645 | passed &= (args.args_count == 1); | |
646 | passed &= (args.args[0] == 1); | |
647 | break; | |
648 | case 1: | |
649 | passed &= !rc; | |
650 | passed &= (args.args_count == 3); | |
651 | passed &= (args.args[0] == 2); | |
652 | passed &= (args.args[1] == 3); | |
653 | passed &= (args.args[2] == 4); | |
654 | break; | |
655 | case 2: | |
656 | passed &= !rc; | |
657 | passed &= (args.args_count == 2); | |
658 | passed &= (args.args[0] == 5); | |
659 | passed &= (args.args[1] == 6); | |
660 | break; | |
661 | case 3: | |
662 | passed &= !rc; | |
663 | passed &= (args.args_count == 1); | |
664 | passed &= (args.args[0] == 9); | |
665 | break; | |
666 | case 4: | |
667 | passed &= !rc; | |
668 | passed &= (args.args_count == 3); | |
669 | passed &= (args.args[0] == 10); | |
670 | passed &= (args.args[1] == 11); | |
671 | passed &= (args.args[2] == 12); | |
672 | break; | |
673 | case 5: | |
674 | passed &= !rc; | |
675 | passed &= (args.args_count == 2); | |
676 | passed &= (args.args[0] == 13); | |
677 | passed &= (args.args[1] == 14); | |
678 | break; | |
679 | case 6: | |
680 | passed &= !rc; | |
681 | passed &= (args.args_count == 1); | |
682 | passed &= (args.args[0] == 15); | |
683 | break; | |
684 | default: | |
685 | passed = false; | |
686 | } | |
687 | ||
9697a559 | 688 | unittest(passed, "index %i - data error on node %s rc=%i\n", |
79d97015 GL |
689 | i, args.np->full_name, rc); |
690 | } | |
691 | of_node_put(np); | |
692 | } | |
693 | ||
afaed7a9 | 694 | static const struct of_device_id match_node_table[] = { |
1f42e5dd GL |
695 | { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ |
696 | { .data = "B", .type = "type1", }, /* followed by type alone */ | |
697 | ||
698 | { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ | |
699 | { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ | |
700 | { .data = "Cc", .name = "name2", .type = "type2", }, | |
701 | ||
702 | { .data = "E", .compatible = "compat3" }, | |
703 | { .data = "G", .compatible = "compat2", }, | |
704 | { .data = "H", .compatible = "compat2", .name = "name5", }, | |
705 | { .data = "I", .compatible = "compat2", .type = "type1", }, | |
706 | { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, | |
707 | { .data = "K", .compatible = "compat2", .name = "name9", }, | |
708 | {} | |
709 | }; | |
710 | ||
711 | static struct { | |
712 | const char *path; | |
713 | const char *data; | |
714 | } match_node_tests[] = { | |
715 | { .path = "/testcase-data/match-node/name0", .data = "A", }, | |
716 | { .path = "/testcase-data/match-node/name1", .data = "B", }, | |
717 | { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, | |
718 | { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, | |
719 | { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, | |
720 | { .path = "/testcase-data/match-node/name3", .data = "E", }, | |
721 | { .path = "/testcase-data/match-node/name4", .data = "G", }, | |
722 | { .path = "/testcase-data/match-node/name5", .data = "H", }, | |
723 | { .path = "/testcase-data/match-node/name6", .data = "G", }, | |
724 | { .path = "/testcase-data/match-node/name7", .data = "I", }, | |
725 | { .path = "/testcase-data/match-node/name8", .data = "J", }, | |
726 | { .path = "/testcase-data/match-node/name9", .data = "K", }, | |
727 | }; | |
728 | ||
9697a559 | 729 | static void __init of_unittest_match_node(void) |
1f42e5dd GL |
730 | { |
731 | struct device_node *np; | |
732 | const struct of_device_id *match; | |
733 | int i; | |
734 | ||
735 | for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { | |
736 | np = of_find_node_by_path(match_node_tests[i].path); | |
737 | if (!np) { | |
9697a559 | 738 | unittest(0, "missing testcase node %s\n", |
1f42e5dd GL |
739 | match_node_tests[i].path); |
740 | continue; | |
741 | } | |
742 | ||
743 | match = of_match_node(match_node_table, np); | |
744 | if (!match) { | |
9697a559 | 745 | unittest(0, "%s didn't match anything\n", |
1f42e5dd GL |
746 | match_node_tests[i].path); |
747 | continue; | |
748 | } | |
749 | ||
750 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
9697a559 | 751 | unittest(0, "%s got wrong match. expected %s, got %s\n", |
1f42e5dd GL |
752 | match_node_tests[i].path, match_node_tests[i].data, |
753 | (const char *)match->data); | |
754 | continue; | |
755 | } | |
9697a559 | 756 | unittest(1, "passed"); |
1f42e5dd GL |
757 | } |
758 | } | |
759 | ||
37791b6f GL |
760 | static const struct platform_device_info test_bus_info = { |
761 | .name = "unittest-bus", | |
851da976 | 762 | }; |
9697a559 | 763 | static void __init of_unittest_platform_populate(void) |
82c0f589 | 764 | { |
851da976 GL |
765 | int irq, rc; |
766 | struct device_node *np, *child, *grandchild; | |
37791b6f | 767 | struct platform_device *pdev, *test_bus; |
afaed7a9 | 768 | const struct of_device_id match[] = { |
fb2caa50 RH |
769 | { .compatible = "test-device", }, |
770 | {} | |
771 | }; | |
82c0f589 RH |
772 | |
773 | np = of_find_node_by_path("/testcase-data"); | |
774 | of_platform_populate(np, of_default_bus_match_table, NULL, NULL); | |
775 | ||
776 | /* Test that a missing irq domain returns -EPROBE_DEFER */ | |
777 | np = of_find_node_by_path("/testcase-data/testcase-device1"); | |
778 | pdev = of_find_device_by_node(np); | |
9697a559 | 779 | unittest(pdev, "device 1 creation failed\n"); |
7d1cdc89 | 780 | |
82c0f589 | 781 | irq = platform_get_irq(pdev, 0); |
9697a559 | 782 | unittest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq); |
82c0f589 RH |
783 | |
784 | /* Test that a parsing failure does not return -EPROBE_DEFER */ | |
785 | np = of_find_node_by_path("/testcase-data/testcase-device2"); | |
786 | pdev = of_find_device_by_node(np); | |
9697a559 | 787 | unittest(pdev, "device 2 creation failed\n"); |
82c0f589 | 788 | irq = platform_get_irq(pdev, 0); |
9697a559 | 789 | unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq); |
82c0f589 | 790 | |
716e1d49 | 791 | np = of_find_node_by_path("/testcase-data/platform-tests"); |
a2166ca5 | 792 | unittest(np, "No testcase data in device tree\n"); |
716e1d49 | 793 | if (!np) |
851da976 GL |
794 | return; |
795 | ||
37791b6f GL |
796 | test_bus = platform_device_register_full(&test_bus_info); |
797 | rc = PTR_ERR_OR_ZERO(test_bus); | |
a2166ca5 | 798 | unittest(!rc, "testbus registration failed; rc=%i\n", rc); |
716e1d49 | 799 | if (rc) |
fb2caa50 | 800 | return; |
37791b6f | 801 | test_bus->dev.of_node = np; |
fb2caa50 | 802 | |
37791b6f | 803 | of_platform_populate(np, match, NULL, &test_bus->dev); |
fb2caa50 | 804 | for_each_child_of_node(np, child) { |
fb2caa50 | 805 | for_each_child_of_node(child, grandchild) |
9697a559 | 806 | unittest(of_find_device_by_node(grandchild), |
fb2caa50 RH |
807 | "Could not create device for node '%s'\n", |
808 | grandchild->name); | |
809 | } | |
851da976 | 810 | |
37791b6f | 811 | of_platform_depopulate(&test_bus->dev); |
851da976 GL |
812 | for_each_child_of_node(np, child) { |
813 | for_each_child_of_node(child, grandchild) | |
9697a559 | 814 | unittest(!of_find_device_by_node(grandchild), |
851da976 GL |
815 | "device didn't get destroyed '%s'\n", |
816 | grandchild->name); | |
817 | } | |
818 | ||
37791b6f | 819 | platform_device_unregister(test_bus); |
851da976 | 820 | of_node_put(np); |
82c0f589 RH |
821 | } |
822 | ||
ae9304c9 GM |
823 | /** |
824 | * update_node_properties - adds the properties | |
825 | * of np into dup node (present in live tree) and | |
826 | * updates parent of children of np to dup. | |
827 | * | |
828 | * @np: node already present in live tree | |
829 | * @dup: node present in live tree to be updated | |
830 | */ | |
831 | static void update_node_properties(struct device_node *np, | |
832 | struct device_node *dup) | |
833 | { | |
834 | struct property *prop; | |
835 | struct device_node *child; | |
836 | ||
837 | for_each_property_of_node(np, prop) | |
838 | of_add_property(dup, prop); | |
839 | ||
840 | for_each_child_of_node(np, child) | |
841 | child->parent = dup; | |
842 | } | |
843 | ||
844 | /** | |
845 | * attach_node_and_children - attaches nodes | |
846 | * and its children to live tree | |
847 | * | |
848 | * @np: Node to attach to live tree | |
849 | */ | |
850 | static int attach_node_and_children(struct device_node *np) | |
851 | { | |
5063e25a | 852 | struct device_node *next, *dup, *child; |
3ce04b4a | 853 | unsigned long flags; |
ae9304c9 | 854 | |
5063e25a GL |
855 | dup = of_find_node_by_path(np->full_name); |
856 | if (dup) { | |
857 | update_node_properties(np, dup); | |
858 | return 0; | |
859 | } | |
ae9304c9 | 860 | |
5063e25a GL |
861 | child = np->child; |
862 | np->child = NULL; | |
3ce04b4a GM |
863 | |
864 | mutex_lock(&of_mutex); | |
865 | raw_spin_lock_irqsave(&devtree_lock, flags); | |
866 | np->sibling = np->parent->child; | |
867 | np->parent->child = np; | |
868 | of_node_clear_flag(np, OF_DETACHED); | |
869 | raw_spin_unlock_irqrestore(&devtree_lock, flags); | |
870 | ||
871 | __of_attach_node_sysfs(np); | |
872 | mutex_unlock(&of_mutex); | |
873 | ||
5063e25a GL |
874 | while (child) { |
875 | next = child->sibling; | |
876 | attach_node_and_children(child); | |
877 | child = next; | |
ae9304c9 GM |
878 | } |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | /** | |
9697a559 | 884 | * unittest_data_add - Reads, copies data from |
ae9304c9 GM |
885 | * linked tree and attaches it to the live tree |
886 | */ | |
9697a559 | 887 | static int __init unittest_data_add(void) |
ae9304c9 | 888 | { |
9697a559 WL |
889 | void *unittest_data; |
890 | struct device_node *unittest_data_node, *np; | |
c8547119 FR |
891 | /* |
892 | * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically | |
893 | * created by cmd_dt_S_dtb in scripts/Makefile.lib | |
894 | */ | |
ae9304c9 GM |
895 | extern uint8_t __dtb_testcases_begin[]; |
896 | extern uint8_t __dtb_testcases_end[]; | |
897 | const int size = __dtb_testcases_end - __dtb_testcases_begin; | |
2eb46da2 | 898 | int rc; |
ae9304c9 | 899 | |
b951f9dc | 900 | if (!size) { |
ae9304c9 GM |
901 | pr_warn("%s: No testcase data to attach; not running tests\n", |
902 | __func__); | |
903 | return -ENODATA; | |
904 | } | |
905 | ||
906 | /* creating copy */ | |
9697a559 | 907 | unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); |
ae9304c9 | 908 | |
9697a559 WL |
909 | if (!unittest_data) { |
910 | pr_warn("%s: Failed to allocate memory for unittest_data; " | |
ae9304c9 GM |
911 | "not running tests\n", __func__); |
912 | return -ENOMEM; | |
913 | } | |
9697a559 WL |
914 | of_fdt_unflatten_tree(unittest_data, &unittest_data_node); |
915 | if (!unittest_data_node) { | |
b951f9dc GM |
916 | pr_warn("%s: No tree to attach; not running tests\n", __func__); |
917 | return -ENODATA; | |
918 | } | |
9697a559 WL |
919 | of_node_set_flag(unittest_data_node, OF_DETACHED); |
920 | rc = of_resolve_phandles(unittest_data_node); | |
2eb46da2 GL |
921 | if (rc) { |
922 | pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); | |
923 | return -EINVAL; | |
924 | } | |
b951f9dc | 925 | |
5063e25a | 926 | if (!of_root) { |
9697a559 | 927 | of_root = unittest_data_node; |
b951f9dc GM |
928 | for_each_of_allnodes(np) |
929 | __of_attach_node_sysfs(np); | |
930 | of_aliases = of_find_node_by_path("/aliases"); | |
931 | of_chosen = of_find_node_by_path("/chosen"); | |
932 | return 0; | |
933 | } | |
ae9304c9 GM |
934 | |
935 | /* attach the sub-tree to live tree */ | |
9697a559 | 936 | np = unittest_data_node->child; |
5063e25a GL |
937 | while (np) { |
938 | struct device_node *next = np->sibling; | |
3db316d0 | 939 | |
5063e25a GL |
940 | np->parent = of_root; |
941 | attach_node_and_children(np); | |
942 | np = next; | |
943 | } | |
944 | return 0; | |
ae9304c9 GM |
945 | } |
946 | ||
177d271c PA |
947 | #ifdef CONFIG_OF_OVERLAY |
948 | ||
9697a559 | 949 | static int unittest_probe(struct platform_device *pdev) |
177d271c PA |
950 | { |
951 | struct device *dev = &pdev->dev; | |
952 | struct device_node *np = dev->of_node; | |
953 | ||
954 | if (np == NULL) { | |
955 | dev_err(dev, "No OF data for device\n"); | |
956 | return -EINVAL; | |
957 | ||
958 | } | |
959 | ||
960 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
6b1271de PA |
961 | |
962 | of_platform_populate(np, NULL, NULL, &pdev->dev); | |
963 | ||
177d271c PA |
964 | return 0; |
965 | } | |
966 | ||
9697a559 | 967 | static int unittest_remove(struct platform_device *pdev) |
177d271c PA |
968 | { |
969 | struct device *dev = &pdev->dev; | |
970 | struct device_node *np = dev->of_node; | |
971 | ||
972 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
973 | return 0; | |
974 | } | |
975 | ||
a2166ca5 | 976 | static const struct of_device_id unittest_match[] = { |
9697a559 | 977 | { .compatible = "unittest", }, |
177d271c PA |
978 | {}, |
979 | }; | |
177d271c | 980 | |
9697a559 WL |
981 | static struct platform_driver unittest_driver = { |
982 | .probe = unittest_probe, | |
983 | .remove = unittest_remove, | |
177d271c | 984 | .driver = { |
9697a559 | 985 | .name = "unittest", |
9697a559 | 986 | .of_match_table = of_match_ptr(unittest_match), |
177d271c PA |
987 | }, |
988 | }; | |
989 | ||
990 | /* get the platform device instantiated at the path */ | |
991 | static struct platform_device *of_path_to_platform_device(const char *path) | |
992 | { | |
993 | struct device_node *np; | |
994 | struct platform_device *pdev; | |
995 | ||
996 | np = of_find_node_by_path(path); | |
997 | if (np == NULL) | |
998 | return NULL; | |
999 | ||
1000 | pdev = of_find_device_by_node(np); | |
1001 | of_node_put(np); | |
1002 | ||
1003 | return pdev; | |
1004 | } | |
1005 | ||
1006 | /* find out if a platform device exists at that path */ | |
1007 | static int of_path_platform_device_exists(const char *path) | |
1008 | { | |
1009 | struct platform_device *pdev; | |
1010 | ||
1011 | pdev = of_path_to_platform_device(path); | |
1012 | platform_device_put(pdev); | |
1013 | return pdev != NULL; | |
1014 | } | |
1015 | ||
4252de39 | 1016 | #if IS_BUILTIN(CONFIG_I2C) |
d5e75500 PA |
1017 | |
1018 | /* get the i2c client device instantiated at the path */ | |
1019 | static struct i2c_client *of_path_to_i2c_client(const char *path) | |
1020 | { | |
1021 | struct device_node *np; | |
1022 | struct i2c_client *client; | |
1023 | ||
1024 | np = of_find_node_by_path(path); | |
1025 | if (np == NULL) | |
1026 | return NULL; | |
1027 | ||
1028 | client = of_find_i2c_device_by_node(np); | |
1029 | of_node_put(np); | |
1030 | ||
1031 | return client; | |
1032 | } | |
1033 | ||
1034 | /* find out if a i2c client device exists at that path */ | |
1035 | static int of_path_i2c_client_exists(const char *path) | |
1036 | { | |
1037 | struct i2c_client *client; | |
1038 | ||
1039 | client = of_path_to_i2c_client(path); | |
1040 | if (client) | |
1041 | put_device(&client->dev); | |
1042 | return client != NULL; | |
1043 | } | |
1044 | #else | |
1045 | static int of_path_i2c_client_exists(const char *path) | |
1046 | { | |
1047 | return 0; | |
1048 | } | |
1049 | #endif | |
1050 | ||
1051 | enum overlay_type { | |
1052 | PDEV_OVERLAY, | |
1053 | I2C_OVERLAY | |
1054 | }; | |
1055 | ||
1056 | static int of_path_device_type_exists(const char *path, | |
1057 | enum overlay_type ovtype) | |
177d271c | 1058 | { |
d5e75500 PA |
1059 | switch (ovtype) { |
1060 | case PDEV_OVERLAY: | |
1061 | return of_path_platform_device_exists(path); | |
1062 | case I2C_OVERLAY: | |
1063 | return of_path_i2c_client_exists(path); | |
1064 | } | |
1065 | return 0; | |
1066 | } | |
1067 | ||
9697a559 | 1068 | static const char *unittest_path(int nr, enum overlay_type ovtype) |
d5e75500 PA |
1069 | { |
1070 | const char *base; | |
177d271c PA |
1071 | static char buf[256]; |
1072 | ||
d5e75500 PA |
1073 | switch (ovtype) { |
1074 | case PDEV_OVERLAY: | |
1075 | base = "/testcase-data/overlay-node/test-bus"; | |
1076 | break; | |
1077 | case I2C_OVERLAY: | |
1078 | base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; | |
1079 | break; | |
1080 | default: | |
1081 | buf[0] = '\0'; | |
1082 | return buf; | |
1083 | } | |
9697a559 | 1084 | snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); |
177d271c | 1085 | buf[sizeof(buf) - 1] = '\0'; |
177d271c PA |
1086 | return buf; |
1087 | } | |
1088 | ||
9697a559 | 1089 | static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) |
d5e75500 PA |
1090 | { |
1091 | const char *path; | |
1092 | ||
9697a559 | 1093 | path = unittest_path(unittest_nr, ovtype); |
d5e75500 PA |
1094 | |
1095 | switch (ovtype) { | |
1096 | case PDEV_OVERLAY: | |
1097 | return of_path_platform_device_exists(path); | |
1098 | case I2C_OVERLAY: | |
1099 | return of_path_i2c_client_exists(path); | |
1100 | } | |
1101 | return 0; | |
1102 | } | |
1103 | ||
177d271c PA |
1104 | static const char *overlay_path(int nr) |
1105 | { | |
1106 | static char buf[256]; | |
1107 | ||
1108 | snprintf(buf, sizeof(buf) - 1, | |
1109 | "/testcase-data/overlay%d", nr); | |
1110 | buf[sizeof(buf) - 1] = '\0'; | |
1111 | ||
1112 | return buf; | |
1113 | } | |
1114 | ||
1115 | static const char *bus_path = "/testcase-data/overlay-node/test-bus"; | |
1116 | ||
492a22ac PA |
1117 | /* it is guaranteed that overlay ids are assigned in sequence */ |
1118 | #define MAX_UNITTEST_OVERLAYS 256 | |
1119 | static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; | |
1120 | static int overlay_first_id = -1; | |
1121 | ||
1122 | static void of_unittest_track_overlay(int id) | |
1123 | { | |
1124 | if (overlay_first_id < 0) | |
1125 | overlay_first_id = id; | |
1126 | id -= overlay_first_id; | |
1127 | ||
1128 | /* we shouldn't need that many */ | |
1129 | BUG_ON(id >= MAX_UNITTEST_OVERLAYS); | |
1130 | overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); | |
1131 | } | |
1132 | ||
1133 | static void of_unittest_untrack_overlay(int id) | |
1134 | { | |
1135 | if (overlay_first_id < 0) | |
1136 | return; | |
1137 | id -= overlay_first_id; | |
1138 | BUG_ON(id >= MAX_UNITTEST_OVERLAYS); | |
1139 | overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); | |
1140 | } | |
1141 | ||
1142 | static void of_unittest_destroy_tracked_overlays(void) | |
1143 | { | |
1144 | int id, ret, defers; | |
1145 | ||
1146 | if (overlay_first_id < 0) | |
1147 | return; | |
1148 | ||
1149 | /* try until no defers */ | |
1150 | do { | |
1151 | defers = 0; | |
1152 | /* remove in reverse order */ | |
1153 | for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { | |
1154 | if (!(overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id))) | |
1155 | continue; | |
1156 | ||
1157 | ret = of_overlay_destroy(id + overlay_first_id); | |
1158 | if (ret != 0) { | |
1159 | defers++; | |
1160 | pr_warn("%s: overlay destroy failed for #%d\n", | |
1161 | __func__, id + overlay_first_id); | |
1162 | continue; | |
1163 | } | |
1164 | ||
1165 | overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); | |
1166 | } | |
1167 | } while (defers > 0); | |
1168 | } | |
1169 | ||
9697a559 | 1170 | static int of_unittest_apply_overlay(int unittest_nr, int overlay_nr, |
177d271c PA |
1171 | int *overlay_id) |
1172 | { | |
1173 | struct device_node *np = NULL; | |
1174 | int ret, id = -1; | |
1175 | ||
1176 | np = of_find_node_by_path(overlay_path(overlay_nr)); | |
1177 | if (np == NULL) { | |
9697a559 | 1178 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1179 | overlay_path(overlay_nr)); |
1180 | ret = -EINVAL; | |
1181 | goto out; | |
1182 | } | |
1183 | ||
1184 | ret = of_overlay_create(np); | |
1185 | if (ret < 0) { | |
9697a559 | 1186 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1187 | overlay_path(overlay_nr)); |
1188 | goto out; | |
1189 | } | |
1190 | id = ret; | |
492a22ac | 1191 | of_unittest_track_overlay(id); |
177d271c PA |
1192 | |
1193 | ret = 0; | |
1194 | ||
1195 | out: | |
1196 | of_node_put(np); | |
1197 | ||
1198 | if (overlay_id) | |
1199 | *overlay_id = id; | |
1200 | ||
1201 | return ret; | |
1202 | } | |
1203 | ||
1204 | /* apply an overlay while checking before and after states */ | |
9697a559 | 1205 | static int of_unittest_apply_overlay_check(int overlay_nr, int unittest_nr, |
d5e75500 | 1206 | int before, int after, enum overlay_type ovtype) |
177d271c PA |
1207 | { |
1208 | int ret; | |
1209 | ||
9697a559 WL |
1210 | /* unittest device must not be in before state */ |
1211 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1212 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1213 | overlay_path(overlay_nr), |
9697a559 | 1214 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1215 | !before ? "enabled" : "disabled"); |
1216 | return -EINVAL; | |
1217 | } | |
1218 | ||
9697a559 | 1219 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, NULL); |
177d271c | 1220 | if (ret != 0) { |
9697a559 | 1221 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1222 | return ret; |
1223 | } | |
1224 | ||
9697a559 WL |
1225 | /* unittest device must be to set to after state */ |
1226 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1227 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1228 | overlay_path(overlay_nr), |
9697a559 | 1229 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1230 | !after ? "enabled" : "disabled"); |
1231 | return -EINVAL; | |
1232 | } | |
1233 | ||
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | /* apply an overlay and then revert it while checking before, after states */ | |
9697a559 WL |
1238 | static int of_unittest_apply_revert_overlay_check(int overlay_nr, |
1239 | int unittest_nr, int before, int after, | |
d5e75500 | 1240 | enum overlay_type ovtype) |
177d271c PA |
1241 | { |
1242 | int ret, ov_id; | |
1243 | ||
9697a559 WL |
1244 | /* unittest device must be in before state */ |
1245 | if (of_unittest_device_exists(unittest_nr, ovtype) != before) { | |
1246 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1247 | overlay_path(overlay_nr), |
9697a559 | 1248 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1249 | !before ? "enabled" : "disabled"); |
1250 | return -EINVAL; | |
1251 | } | |
1252 | ||
1253 | /* apply the overlay */ | |
9697a559 | 1254 | ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ov_id); |
177d271c | 1255 | if (ret != 0) { |
9697a559 | 1256 | /* of_unittest_apply_overlay already called unittest() */ |
177d271c PA |
1257 | return ret; |
1258 | } | |
1259 | ||
9697a559 WL |
1260 | /* unittest device must be in after state */ |
1261 | if (of_unittest_device_exists(unittest_nr, ovtype) != after) { | |
1262 | unittest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n", | |
177d271c | 1263 | overlay_path(overlay_nr), |
9697a559 | 1264 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1265 | !after ? "enabled" : "disabled"); |
1266 | return -EINVAL; | |
1267 | } | |
1268 | ||
1269 | ret = of_overlay_destroy(ov_id); | |
1270 | if (ret != 0) { | |
9697a559 | 1271 | unittest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n", |
177d271c | 1272 | overlay_path(overlay_nr), |
9697a559 | 1273 | unittest_path(unittest_nr, ovtype)); |
177d271c PA |
1274 | return ret; |
1275 | } | |
1276 | ||
9697a559 WL |
1277 | /* unittest device must be again in before state */ |
1278 | if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { | |
1279 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", | |
177d271c | 1280 | overlay_path(overlay_nr), |
9697a559 | 1281 | unittest_path(unittest_nr, ovtype), |
177d271c PA |
1282 | !before ? "enabled" : "disabled"); |
1283 | return -EINVAL; | |
1284 | } | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | /* test activation of device */ | |
9697a559 | 1290 | static void of_unittest_overlay_0(void) |
177d271c PA |
1291 | { |
1292 | int ret; | |
1293 | ||
1294 | /* device should enable */ | |
9697a559 | 1295 | ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1296 | if (ret != 0) |
1297 | return; | |
1298 | ||
9697a559 | 1299 | unittest(1, "overlay test %d passed\n", 0); |
177d271c PA |
1300 | } |
1301 | ||
1302 | /* test deactivation of device */ | |
9697a559 | 1303 | static void of_unittest_overlay_1(void) |
177d271c PA |
1304 | { |
1305 | int ret; | |
1306 | ||
1307 | /* device should disable */ | |
9697a559 | 1308 | ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1309 | if (ret != 0) |
1310 | return; | |
1311 | ||
9697a559 | 1312 | unittest(1, "overlay test %d passed\n", 1); |
177d271c PA |
1313 | } |
1314 | ||
1315 | /* test activation of device */ | |
9697a559 | 1316 | static void of_unittest_overlay_2(void) |
177d271c PA |
1317 | { |
1318 | int ret; | |
1319 | ||
1320 | /* device should enable */ | |
9697a559 | 1321 | ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1322 | if (ret != 0) |
1323 | return; | |
1324 | ||
9697a559 | 1325 | unittest(1, "overlay test %d passed\n", 2); |
177d271c PA |
1326 | } |
1327 | ||
1328 | /* test deactivation of device */ | |
9697a559 | 1329 | static void of_unittest_overlay_3(void) |
177d271c PA |
1330 | { |
1331 | int ret; | |
1332 | ||
1333 | /* device should disable */ | |
9697a559 | 1334 | ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); |
177d271c PA |
1335 | if (ret != 0) |
1336 | return; | |
1337 | ||
9697a559 | 1338 | unittest(1, "overlay test %d passed\n", 3); |
177d271c PA |
1339 | } |
1340 | ||
1341 | /* test activation of a full device node */ | |
9697a559 | 1342 | static void of_unittest_overlay_4(void) |
177d271c PA |
1343 | { |
1344 | int ret; | |
1345 | ||
1346 | /* device should disable */ | |
9697a559 | 1347 | ret = of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1348 | if (ret != 0) |
1349 | return; | |
1350 | ||
9697a559 | 1351 | unittest(1, "overlay test %d passed\n", 4); |
177d271c PA |
1352 | } |
1353 | ||
1354 | /* test overlay apply/revert sequence */ | |
9697a559 | 1355 | static void of_unittest_overlay_5(void) |
177d271c PA |
1356 | { |
1357 | int ret; | |
1358 | ||
1359 | /* device should disable */ | |
9697a559 | 1360 | ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); |
177d271c PA |
1361 | if (ret != 0) |
1362 | return; | |
1363 | ||
9697a559 | 1364 | unittest(1, "overlay test %d passed\n", 5); |
177d271c PA |
1365 | } |
1366 | ||
1367 | /* test overlay application in sequence */ | |
9697a559 | 1368 | static void of_unittest_overlay_6(void) |
177d271c PA |
1369 | { |
1370 | struct device_node *np; | |
1371 | int ret, i, ov_id[2]; | |
9697a559 | 1372 | int overlay_nr = 6, unittest_nr = 6; |
177d271c PA |
1373 | int before = 0, after = 1; |
1374 | ||
9697a559 | 1375 | /* unittest device must be in before state */ |
177d271c | 1376 | for (i = 0; i < 2; i++) { |
9697a559 | 1377 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) |
177d271c | 1378 | != before) { |
9697a559 | 1379 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1380 | overlay_path(overlay_nr + i), |
9697a559 | 1381 | unittest_path(unittest_nr + i, |
d5e75500 | 1382 | PDEV_OVERLAY), |
177d271c PA |
1383 | !before ? "enabled" : "disabled"); |
1384 | return; | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | /* apply the overlays */ | |
1389 | for (i = 0; i < 2; i++) { | |
1390 | ||
1391 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1392 | if (np == NULL) { | |
9697a559 | 1393 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1394 | overlay_path(overlay_nr + i)); |
1395 | return; | |
1396 | } | |
1397 | ||
1398 | ret = of_overlay_create(np); | |
1399 | if (ret < 0) { | |
9697a559 | 1400 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1401 | overlay_path(overlay_nr + i)); |
1402 | return; | |
1403 | } | |
1404 | ov_id[i] = ret; | |
492a22ac | 1405 | of_unittest_track_overlay(ov_id[i]); |
177d271c PA |
1406 | } |
1407 | ||
1408 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1409 | /* unittest device must be in after state */ |
1410 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1411 | != after) { |
9697a559 | 1412 | unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", |
177d271c | 1413 | overlay_path(overlay_nr + i), |
9697a559 | 1414 | unittest_path(unittest_nr + i, |
d5e75500 | 1415 | PDEV_OVERLAY), |
177d271c PA |
1416 | !after ? "enabled" : "disabled"); |
1417 | return; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | for (i = 1; i >= 0; i--) { | |
1422 | ret = of_overlay_destroy(ov_id[i]); | |
1423 | if (ret != 0) { | |
9697a559 | 1424 | unittest(0, "overlay @\"%s\" failed destroy @\"%s\"\n", |
177d271c | 1425 | overlay_path(overlay_nr + i), |
9697a559 | 1426 | unittest_path(unittest_nr + i, |
d5e75500 | 1427 | PDEV_OVERLAY)); |
177d271c PA |
1428 | return; |
1429 | } | |
492a22ac | 1430 | of_unittest_untrack_overlay(ov_id[i]); |
177d271c PA |
1431 | } |
1432 | ||
1433 | for (i = 0; i < 2; i++) { | |
9697a559 WL |
1434 | /* unittest device must be again in before state */ |
1435 | if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) | |
177d271c | 1436 | != before) { |
9697a559 | 1437 | unittest(0, "overlay @\"%s\" with device @\"%s\" %s\n", |
177d271c | 1438 | overlay_path(overlay_nr + i), |
9697a559 | 1439 | unittest_path(unittest_nr + i, |
d5e75500 | 1440 | PDEV_OVERLAY), |
177d271c PA |
1441 | !before ? "enabled" : "disabled"); |
1442 | return; | |
1443 | } | |
1444 | } | |
1445 | ||
9697a559 | 1446 | unittest(1, "overlay test %d passed\n", 6); |
177d271c PA |
1447 | } |
1448 | ||
1449 | /* test overlay application in sequence */ | |
9697a559 | 1450 | static void of_unittest_overlay_8(void) |
177d271c PA |
1451 | { |
1452 | struct device_node *np; | |
1453 | int ret, i, ov_id[2]; | |
9697a559 | 1454 | int overlay_nr = 8, unittest_nr = 8; |
177d271c PA |
1455 | |
1456 | /* we don't care about device state in this test */ | |
1457 | ||
1458 | /* apply the overlays */ | |
1459 | for (i = 0; i < 2; i++) { | |
1460 | ||
1461 | np = of_find_node_by_path(overlay_path(overlay_nr + i)); | |
1462 | if (np == NULL) { | |
9697a559 | 1463 | unittest(0, "could not find overlay node @\"%s\"\n", |
177d271c PA |
1464 | overlay_path(overlay_nr + i)); |
1465 | return; | |
1466 | } | |
1467 | ||
1468 | ret = of_overlay_create(np); | |
1469 | if (ret < 0) { | |
9697a559 | 1470 | unittest(0, "could not create overlay from \"%s\"\n", |
177d271c PA |
1471 | overlay_path(overlay_nr + i)); |
1472 | return; | |
1473 | } | |
1474 | ov_id[i] = ret; | |
492a22ac | 1475 | of_unittest_track_overlay(ov_id[i]); |
177d271c PA |
1476 | } |
1477 | ||
1478 | /* now try to remove first overlay (it should fail) */ | |
1479 | ret = of_overlay_destroy(ov_id[0]); | |
1480 | if (ret == 0) { | |
9697a559 | 1481 | unittest(0, "overlay @\"%s\" was destroyed @\"%s\"\n", |
177d271c | 1482 | overlay_path(overlay_nr + 0), |
9697a559 | 1483 | unittest_path(unittest_nr, |
d5e75500 | 1484 | PDEV_OVERLAY)); |
177d271c PA |
1485 | return; |
1486 | } | |
1487 | ||
1488 | /* removing them in order should work */ | |
1489 | for (i = 1; i >= 0; i--) { | |
1490 | ret = of_overlay_destroy(ov_id[i]); | |
1491 | if (ret != 0) { | |
9697a559 | 1492 | unittest(0, "overlay @\"%s\" not destroyed @\"%s\"\n", |
177d271c | 1493 | overlay_path(overlay_nr + i), |
9697a559 | 1494 | unittest_path(unittest_nr, |
d5e75500 | 1495 | PDEV_OVERLAY)); |
177d271c PA |
1496 | return; |
1497 | } | |
492a22ac | 1498 | of_unittest_untrack_overlay(ov_id[i]); |
177d271c PA |
1499 | } |
1500 | ||
9697a559 | 1501 | unittest(1, "overlay test %d passed\n", 8); |
177d271c PA |
1502 | } |
1503 | ||
6b1271de | 1504 | /* test insertion of a bus with parent devices */ |
9697a559 | 1505 | static void of_unittest_overlay_10(void) |
6b1271de PA |
1506 | { |
1507 | int ret; | |
1508 | char *child_path; | |
1509 | ||
1510 | /* device should disable */ | |
9697a559 WL |
1511 | ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); |
1512 | if (unittest(ret == 0, | |
d5e75500 | 1513 | "overlay test %d failed; overlay application\n", 10)) |
6b1271de PA |
1514 | return; |
1515 | ||
9697a559 WL |
1516 | child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", |
1517 | unittest_path(10, PDEV_OVERLAY)); | |
1518 | if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) | |
6b1271de PA |
1519 | return; |
1520 | ||
d5e75500 | 1521 | ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); |
6b1271de | 1522 | kfree(child_path); |
9697a559 | 1523 | if (unittest(ret, "overlay test %d failed; no child device\n", 10)) |
6b1271de PA |
1524 | return; |
1525 | } | |
1526 | ||
1527 | /* test insertion of a bus with parent devices (and revert) */ | |
9697a559 | 1528 | static void of_unittest_overlay_11(void) |
6b1271de PA |
1529 | { |
1530 | int ret; | |
1531 | ||
1532 | /* device should disable */ | |
9697a559 | 1533 | ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, |
d5e75500 | 1534 | PDEV_OVERLAY); |
9697a559 | 1535 | if (unittest(ret == 0, |
d5e75500 PA |
1536 | "overlay test %d failed; overlay application\n", 11)) |
1537 | return; | |
1538 | } | |
1539 | ||
4252de39 | 1540 | #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) |
d5e75500 | 1541 | |
9697a559 | 1542 | struct unittest_i2c_bus_data { |
d5e75500 PA |
1543 | struct platform_device *pdev; |
1544 | struct i2c_adapter adap; | |
1545 | }; | |
1546 | ||
9697a559 | 1547 | static int unittest_i2c_master_xfer(struct i2c_adapter *adap, |
d5e75500 PA |
1548 | struct i2c_msg *msgs, int num) |
1549 | { | |
9697a559 | 1550 | struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); |
d5e75500 PA |
1551 | |
1552 | (void)std; | |
1553 | ||
1554 | return num; | |
1555 | } | |
1556 | ||
9697a559 | 1557 | static u32 unittest_i2c_functionality(struct i2c_adapter *adap) |
d5e75500 PA |
1558 | { |
1559 | return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; | |
1560 | } | |
1561 | ||
9697a559 WL |
1562 | static const struct i2c_algorithm unittest_i2c_algo = { |
1563 | .master_xfer = unittest_i2c_master_xfer, | |
1564 | .functionality = unittest_i2c_functionality, | |
d5e75500 PA |
1565 | }; |
1566 | ||
9697a559 | 1567 | static int unittest_i2c_bus_probe(struct platform_device *pdev) |
d5e75500 PA |
1568 | { |
1569 | struct device *dev = &pdev->dev; | |
1570 | struct device_node *np = dev->of_node; | |
9697a559 | 1571 | struct unittest_i2c_bus_data *std; |
d5e75500 PA |
1572 | struct i2c_adapter *adap; |
1573 | int ret; | |
1574 | ||
1575 | if (np == NULL) { | |
1576 | dev_err(dev, "No OF data for device\n"); | |
1577 | return -EINVAL; | |
1578 | ||
1579 | } | |
1580 | ||
1581 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1582 | ||
1583 | std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); | |
1584 | if (!std) { | |
9697a559 | 1585 | dev_err(dev, "Failed to allocate unittest i2c data\n"); |
d5e75500 PA |
1586 | return -ENOMEM; |
1587 | } | |
1588 | ||
1589 | /* link them together */ | |
1590 | std->pdev = pdev; | |
1591 | platform_set_drvdata(pdev, std); | |
1592 | ||
1593 | adap = &std->adap; | |
1594 | i2c_set_adapdata(adap, std); | |
1595 | adap->nr = -1; | |
1596 | strlcpy(adap->name, pdev->name, sizeof(adap->name)); | |
1597 | adap->class = I2C_CLASS_DEPRECATED; | |
9697a559 | 1598 | adap->algo = &unittest_i2c_algo; |
d5e75500 PA |
1599 | adap->dev.parent = dev; |
1600 | adap->dev.of_node = dev->of_node; | |
1601 | adap->timeout = 5 * HZ; | |
1602 | adap->retries = 3; | |
1603 | ||
1604 | ret = i2c_add_numbered_adapter(adap); | |
1605 | if (ret != 0) { | |
1606 | dev_err(dev, "Failed to add I2C adapter\n"); | |
1607 | return ret; | |
1608 | } | |
1609 | ||
1610 | return 0; | |
1611 | } | |
1612 | ||
9697a559 | 1613 | static int unittest_i2c_bus_remove(struct platform_device *pdev) |
d5e75500 PA |
1614 | { |
1615 | struct device *dev = &pdev->dev; | |
1616 | struct device_node *np = dev->of_node; | |
9697a559 | 1617 | struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); |
d5e75500 PA |
1618 | |
1619 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1620 | i2c_del_adapter(&std->adap); | |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
a2166ca5 | 1625 | static const struct of_device_id unittest_i2c_bus_match[] = { |
9697a559 | 1626 | { .compatible = "unittest-i2c-bus", }, |
d5e75500 PA |
1627 | {}, |
1628 | }; | |
1629 | ||
9697a559 WL |
1630 | static struct platform_driver unittest_i2c_bus_driver = { |
1631 | .probe = unittest_i2c_bus_probe, | |
1632 | .remove = unittest_i2c_bus_remove, | |
d5e75500 | 1633 | .driver = { |
9697a559 WL |
1634 | .name = "unittest-i2c-bus", |
1635 | .of_match_table = of_match_ptr(unittest_i2c_bus_match), | |
d5e75500 PA |
1636 | }, |
1637 | }; | |
1638 | ||
9697a559 | 1639 | static int unittest_i2c_dev_probe(struct i2c_client *client, |
d5e75500 PA |
1640 | const struct i2c_device_id *id) |
1641 | { | |
1642 | struct device *dev = &client->dev; | |
1643 | struct device_node *np = client->dev.of_node; | |
1644 | ||
1645 | if (!np) { | |
1646 | dev_err(dev, "No OF node\n"); | |
1647 | return -EINVAL; | |
1648 | } | |
1649 | ||
1650 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1651 | ||
1652 | return 0; | |
1653 | }; | |
1654 | ||
9697a559 | 1655 | static int unittest_i2c_dev_remove(struct i2c_client *client) |
d5e75500 PA |
1656 | { |
1657 | struct device *dev = &client->dev; | |
1658 | struct device_node *np = client->dev.of_node; | |
1659 | ||
1660 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1661 | return 0; | |
1662 | } | |
1663 | ||
9697a559 WL |
1664 | static const struct i2c_device_id unittest_i2c_dev_id[] = { |
1665 | { .name = "unittest-i2c-dev" }, | |
d5e75500 PA |
1666 | { } |
1667 | }; | |
1668 | ||
9697a559 | 1669 | static struct i2c_driver unittest_i2c_dev_driver = { |
d5e75500 | 1670 | .driver = { |
9697a559 | 1671 | .name = "unittest-i2c-dev", |
d5e75500 | 1672 | }, |
9697a559 WL |
1673 | .probe = unittest_i2c_dev_probe, |
1674 | .remove = unittest_i2c_dev_remove, | |
1675 | .id_table = unittest_i2c_dev_id, | |
d5e75500 PA |
1676 | }; |
1677 | ||
4252de39 | 1678 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
d5e75500 | 1679 | |
9697a559 | 1680 | struct unittest_i2c_mux_data { |
d5e75500 PA |
1681 | int nchans; |
1682 | struct i2c_adapter *adap[]; | |
1683 | }; | |
1684 | ||
9697a559 | 1685 | static int unittest_i2c_mux_select_chan(struct i2c_adapter *adap, |
d5e75500 PA |
1686 | void *client, u32 chan) |
1687 | { | |
1688 | return 0; | |
1689 | } | |
1690 | ||
9697a559 | 1691 | static int unittest_i2c_mux_probe(struct i2c_client *client, |
d5e75500 PA |
1692 | const struct i2c_device_id *id) |
1693 | { | |
1694 | int ret, i, nchans, size; | |
1695 | struct device *dev = &client->dev; | |
1696 | struct i2c_adapter *adap = to_i2c_adapter(dev->parent); | |
1697 | struct device_node *np = client->dev.of_node, *child; | |
9697a559 | 1698 | struct unittest_i2c_mux_data *stm; |
d5e75500 PA |
1699 | u32 reg, max_reg; |
1700 | ||
1701 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1702 | ||
1703 | if (!np) { | |
1704 | dev_err(dev, "No OF node\n"); | |
1705 | return -EINVAL; | |
1706 | } | |
1707 | ||
1708 | max_reg = (u32)-1; | |
1709 | for_each_child_of_node(np, child) { | |
1710 | ret = of_property_read_u32(child, "reg", ®); | |
1711 | if (ret) | |
1712 | continue; | |
1713 | if (max_reg == (u32)-1 || reg > max_reg) | |
1714 | max_reg = reg; | |
1715 | } | |
1716 | nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; | |
1717 | if (nchans == 0) { | |
1718 | dev_err(dev, "No channels\n"); | |
1719 | return -EINVAL; | |
1720 | } | |
1721 | ||
9697a559 | 1722 | size = offsetof(struct unittest_i2c_mux_data, adap[nchans]); |
d5e75500 PA |
1723 | stm = devm_kzalloc(dev, size, GFP_KERNEL); |
1724 | if (!stm) { | |
1725 | dev_err(dev, "Out of memory\n"); | |
1726 | return -ENOMEM; | |
1727 | } | |
1728 | stm->nchans = nchans; | |
1729 | for (i = 0; i < nchans; i++) { | |
1730 | stm->adap[i] = i2c_add_mux_adapter(adap, dev, client, | |
9697a559 | 1731 | 0, i, 0, unittest_i2c_mux_select_chan, NULL); |
d5e75500 PA |
1732 | if (!stm->adap[i]) { |
1733 | dev_err(dev, "Failed to register mux #%d\n", i); | |
1734 | for (i--; i >= 0; i--) | |
1735 | i2c_del_mux_adapter(stm->adap[i]); | |
1736 | return -ENODEV; | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | i2c_set_clientdata(client, stm); | |
1741 | ||
1742 | return 0; | |
1743 | }; | |
1744 | ||
9697a559 | 1745 | static int unittest_i2c_mux_remove(struct i2c_client *client) |
d5e75500 PA |
1746 | { |
1747 | struct device *dev = &client->dev; | |
1748 | struct device_node *np = client->dev.of_node; | |
9697a559 | 1749 | struct unittest_i2c_mux_data *stm = i2c_get_clientdata(client); |
d5e75500 PA |
1750 | int i; |
1751 | ||
1752 | dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name); | |
1753 | for (i = stm->nchans - 1; i >= 0; i--) | |
1754 | i2c_del_mux_adapter(stm->adap[i]); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
9697a559 WL |
1758 | static const struct i2c_device_id unittest_i2c_mux_id[] = { |
1759 | { .name = "unittest-i2c-mux" }, | |
d5e75500 PA |
1760 | { } |
1761 | }; | |
1762 | ||
9697a559 | 1763 | static struct i2c_driver unittest_i2c_mux_driver = { |
d5e75500 | 1764 | .driver = { |
9697a559 | 1765 | .name = "unittest-i2c-mux", |
d5e75500 | 1766 | }, |
9697a559 WL |
1767 | .probe = unittest_i2c_mux_probe, |
1768 | .remove = unittest_i2c_mux_remove, | |
1769 | .id_table = unittest_i2c_mux_id, | |
d5e75500 PA |
1770 | }; |
1771 | ||
1772 | #endif | |
1773 | ||
9697a559 | 1774 | static int of_unittest_overlay_i2c_init(void) |
d5e75500 PA |
1775 | { |
1776 | int ret; | |
1777 | ||
9697a559 WL |
1778 | ret = i2c_add_driver(&unittest_i2c_dev_driver); |
1779 | if (unittest(ret == 0, | |
1780 | "could not register unittest i2c device driver\n")) | |
d5e75500 PA |
1781 | return ret; |
1782 | ||
9697a559 WL |
1783 | ret = platform_driver_register(&unittest_i2c_bus_driver); |
1784 | if (unittest(ret == 0, | |
1785 | "could not register unittest i2c bus driver\n")) | |
d5e75500 PA |
1786 | return ret; |
1787 | ||
4252de39 | 1788 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 WL |
1789 | ret = i2c_add_driver(&unittest_i2c_mux_driver); |
1790 | if (unittest(ret == 0, | |
1791 | "could not register unittest i2c mux driver\n")) | |
d5e75500 PA |
1792 | return ret; |
1793 | #endif | |
1794 | ||
1795 | return 0; | |
1796 | } | |
1797 | ||
9697a559 | 1798 | static void of_unittest_overlay_i2c_cleanup(void) |
d5e75500 | 1799 | { |
4252de39 | 1800 | #if IS_BUILTIN(CONFIG_I2C_MUX) |
9697a559 | 1801 | i2c_del_driver(&unittest_i2c_mux_driver); |
d5e75500 | 1802 | #endif |
9697a559 WL |
1803 | platform_driver_unregister(&unittest_i2c_bus_driver); |
1804 | i2c_del_driver(&unittest_i2c_dev_driver); | |
d5e75500 PA |
1805 | } |
1806 | ||
9697a559 | 1807 | static void of_unittest_overlay_i2c_12(void) |
d5e75500 PA |
1808 | { |
1809 | int ret; | |
1810 | ||
1811 | /* device should enable */ | |
9697a559 | 1812 | ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1813 | if (ret != 0) |
1814 | return; | |
1815 | ||
9697a559 | 1816 | unittest(1, "overlay test %d passed\n", 12); |
d5e75500 PA |
1817 | } |
1818 | ||
1819 | /* test deactivation of device */ | |
9697a559 | 1820 | static void of_unittest_overlay_i2c_13(void) |
d5e75500 PA |
1821 | { |
1822 | int ret; | |
1823 | ||
1824 | /* device should disable */ | |
9697a559 | 1825 | ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); |
d5e75500 | 1826 | if (ret != 0) |
6b1271de | 1827 | return; |
d5e75500 | 1828 | |
9697a559 | 1829 | unittest(1, "overlay test %d passed\n", 13); |
d5e75500 PA |
1830 | } |
1831 | ||
1832 | /* just check for i2c mux existence */ | |
9697a559 | 1833 | static void of_unittest_overlay_i2c_14(void) |
d5e75500 | 1834 | { |
6b1271de PA |
1835 | } |
1836 | ||
9697a559 | 1837 | static void of_unittest_overlay_i2c_15(void) |
d5e75500 PA |
1838 | { |
1839 | int ret; | |
1840 | ||
1841 | /* device should enable */ | |
9697a559 | 1842 | ret = of_unittest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY); |
d5e75500 PA |
1843 | if (ret != 0) |
1844 | return; | |
1845 | ||
9697a559 | 1846 | unittest(1, "overlay test %d passed\n", 15); |
d5e75500 PA |
1847 | } |
1848 | ||
1849 | #else | |
1850 | ||
9697a559 WL |
1851 | static inline void of_unittest_overlay_i2c_14(void) { } |
1852 | static inline void of_unittest_overlay_i2c_15(void) { } | |
d5e75500 PA |
1853 | |
1854 | #endif | |
1855 | ||
9697a559 | 1856 | static void __init of_unittest_overlay(void) |
177d271c PA |
1857 | { |
1858 | struct device_node *bus_np = NULL; | |
1859 | int ret; | |
1860 | ||
9697a559 | 1861 | ret = platform_driver_register(&unittest_driver); |
177d271c | 1862 | if (ret != 0) { |
9697a559 | 1863 | unittest(0, "could not register unittest driver\n"); |
177d271c PA |
1864 | goto out; |
1865 | } | |
1866 | ||
1867 | bus_np = of_find_node_by_path(bus_path); | |
1868 | if (bus_np == NULL) { | |
9697a559 | 1869 | unittest(0, "could not find bus_path \"%s\"\n", bus_path); |
177d271c PA |
1870 | goto out; |
1871 | } | |
1872 | ||
1873 | ret = of_platform_populate(bus_np, of_default_bus_match_table, | |
1874 | NULL, NULL); | |
1875 | if (ret != 0) { | |
9697a559 | 1876 | unittest(0, "could not populate bus @ \"%s\"\n", bus_path); |
177d271c PA |
1877 | goto out; |
1878 | } | |
1879 | ||
9697a559 WL |
1880 | if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { |
1881 | unittest(0, "could not find unittest0 @ \"%s\"\n", | |
1882 | unittest_path(100, PDEV_OVERLAY)); | |
177d271c PA |
1883 | goto out; |
1884 | } | |
1885 | ||
9697a559 WL |
1886 | if (of_unittest_device_exists(101, PDEV_OVERLAY)) { |
1887 | unittest(0, "unittest1 @ \"%s\" should not exist\n", | |
1888 | unittest_path(101, PDEV_OVERLAY)); | |
177d271c PA |
1889 | goto out; |
1890 | } | |
1891 | ||
9697a559 | 1892 | unittest(1, "basic infrastructure of overlays passed"); |
177d271c PA |
1893 | |
1894 | /* tests in sequence */ | |
9697a559 WL |
1895 | of_unittest_overlay_0(); |
1896 | of_unittest_overlay_1(); | |
1897 | of_unittest_overlay_2(); | |
1898 | of_unittest_overlay_3(); | |
1899 | of_unittest_overlay_4(); | |
1900 | of_unittest_overlay_5(); | |
1901 | of_unittest_overlay_6(); | |
1902 | of_unittest_overlay_8(); | |
1903 | ||
1904 | of_unittest_overlay_10(); | |
1905 | of_unittest_overlay_11(); | |
6b1271de | 1906 | |
4252de39 | 1907 | #if IS_BUILTIN(CONFIG_I2C) |
9697a559 | 1908 | if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) |
d5e75500 PA |
1909 | goto out; |
1910 | ||
9697a559 WL |
1911 | of_unittest_overlay_i2c_12(); |
1912 | of_unittest_overlay_i2c_13(); | |
1913 | of_unittest_overlay_i2c_14(); | |
1914 | of_unittest_overlay_i2c_15(); | |
d5e75500 | 1915 | |
9697a559 | 1916 | of_unittest_overlay_i2c_cleanup(); |
d5e75500 PA |
1917 | #endif |
1918 | ||
492a22ac PA |
1919 | of_unittest_destroy_tracked_overlays(); |
1920 | ||
177d271c PA |
1921 | out: |
1922 | of_node_put(bus_np); | |
1923 | } | |
1924 | ||
1925 | #else | |
9697a559 | 1926 | static inline void __init of_unittest_overlay(void) { } |
177d271c PA |
1927 | #endif |
1928 | ||
9697a559 | 1929 | static int __init of_unittest(void) |
53a42093 GL |
1930 | { |
1931 | struct device_node *np; | |
ae9304c9 GM |
1932 | int res; |
1933 | ||
9697a559 WL |
1934 | /* adding data for unittest */ |
1935 | res = unittest_data_add(); | |
ae9304c9 GM |
1936 | if (res) |
1937 | return res; | |
788ec2fc GL |
1938 | if (!of_aliases) |
1939 | of_aliases = of_find_node_by_path("/aliases"); | |
53a42093 GL |
1940 | |
1941 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
1942 | if (!np) { | |
1943 | pr_info("No testcase data in device tree; not running tests\n"); | |
1944 | return 0; | |
1945 | } | |
1946 | of_node_put(np); | |
1947 | ||
9697a559 WL |
1948 | pr_info("start of unittest - you will see error messages\n"); |
1949 | of_unittest_check_tree_linkage(); | |
1950 | of_unittest_check_phandles(); | |
1951 | of_unittest_find_node_by_name(); | |
1952 | of_unittest_dynamic(); | |
1953 | of_unittest_parse_phandle_with_args(); | |
1954 | of_unittest_property_string(); | |
1955 | of_unittest_property_copy(); | |
1956 | of_unittest_changeset(); | |
1957 | of_unittest_parse_interrupts(); | |
1958 | of_unittest_parse_interrupts_extended(); | |
1959 | of_unittest_match_node(); | |
1960 | of_unittest_platform_populate(); | |
1961 | of_unittest_overlay(); | |
ae9304c9 | 1962 | |
f2051d6a | 1963 | /* Double check linkage after removing testcase data */ |
9697a559 | 1964 | of_unittest_check_tree_linkage(); |
f2051d6a | 1965 | |
9697a559 WL |
1966 | pr_info("end of unittest - %i passed, %i failed\n", |
1967 | unittest_results.passed, unittest_results.failed); | |
f2051d6a | 1968 | |
53a42093 GL |
1969 | return 0; |
1970 | } | |
9697a559 | 1971 | late_initcall(of_unittest); |