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