Commit | Line | Data |
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53a42093 GL |
1 | /* |
2 | * Self tests for device tree subsystem | |
3 | */ | |
4 | ||
cabb7d5b | 5 | #define pr_fmt(fmt) "### dt-test ### " fmt |
53a42093 GL |
6 | |
7 | #include <linux/clk.h> | |
8 | #include <linux/err.h> | |
9 | #include <linux/errno.h> | |
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> | |
20 | ||
69843396 PA |
21 | #include "of_private.h" |
22 | ||
a9f10ca7 GL |
23 | static struct selftest_results { |
24 | int passed; | |
25 | int failed; | |
26 | } selftest_results; | |
27 | ||
2eb46da2 | 28 | #define NO_OF_NODES 3 |
ae9304c9 GM |
29 | static struct device_node *nodes[NO_OF_NODES]; |
30 | static int last_node_index; | |
b951f9dc | 31 | static bool selftest_live_tree; |
ae9304c9 | 32 | |
53a42093 | 33 | #define selftest(result, fmt, ...) { \ |
cabb7d5b | 34 | if (!(result)) { \ |
a9f10ca7 GL |
35 | selftest_results.failed++; \ |
36 | pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ | |
cabb7d5b | 37 | } else { \ |
a9f10ca7 GL |
38 | selftest_results.passed++; \ |
39 | pr_debug("pass %s():%i\n", __func__, __LINE__); \ | |
cabb7d5b | 40 | } \ |
53a42093 GL |
41 | } |
42 | ||
ae91ff72 GL |
43 | static void __init of_selftest_find_node_by_name(void) |
44 | { | |
45 | struct device_node *np; | |
46 | ||
47 | np = of_find_node_by_path("/testcase-data"); | |
48 | selftest(np && !strcmp("/testcase-data", np->full_name), | |
49 | "find /testcase-data failed\n"); | |
50 | of_node_put(np); | |
51 | ||
52 | /* Test if trailing '/' works */ | |
53 | np = of_find_node_by_path("/testcase-data/"); | |
54 | selftest(!np, "trailing '/' on /testcase-data/ should fail\n"); | |
55 | ||
56 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
57 | selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), | |
58 | "find /testcase-data/phandle-tests/consumer-a failed\n"); | |
59 | of_node_put(np); | |
60 | ||
61 | np = of_find_node_by_path("testcase-alias"); | |
62 | selftest(np && !strcmp("/testcase-data", np->full_name), | |
63 | "find testcase-alias failed\n"); | |
64 | of_node_put(np); | |
65 | ||
66 | /* Test if trailing '/' works on aliases */ | |
67 | np = of_find_node_by_path("testcase-alias/"); | |
68 | selftest(!np, "trailing '/' on testcase-alias/ should fail\n"); | |
69 | ||
70 | np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); | |
71 | selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name), | |
72 | "find testcase-alias/phandle-tests/consumer-a failed\n"); | |
73 | of_node_put(np); | |
74 | ||
75 | np = of_find_node_by_path("/testcase-data/missing-path"); | |
76 | selftest(!np, "non-existent path returned node %s\n", np->full_name); | |
77 | of_node_put(np); | |
78 | ||
79 | np = of_find_node_by_path("missing-alias"); | |
80 | selftest(!np, "non-existent alias returned node %s\n", np->full_name); | |
81 | of_node_put(np); | |
82 | ||
83 | np = of_find_node_by_path("testcase-alias/missing-path"); | |
84 | selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name); | |
85 | of_node_put(np); | |
86 | } | |
87 | ||
7e66c5c7 GL |
88 | static void __init of_selftest_dynamic(void) |
89 | { | |
90 | struct device_node *np; | |
91 | struct property *prop; | |
92 | ||
93 | np = of_find_node_by_path("/testcase-data"); | |
94 | if (!np) { | |
95 | pr_err("missing testcase data\n"); | |
96 | return; | |
97 | } | |
98 | ||
99 | /* Array of 4 properties for the purpose of testing */ | |
100 | prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL); | |
101 | if (!prop) { | |
102 | selftest(0, "kzalloc() failed\n"); | |
103 | return; | |
104 | } | |
105 | ||
106 | /* Add a new property - should pass*/ | |
107 | prop->name = "new-property"; | |
108 | prop->value = "new-property-data"; | |
109 | prop->length = strlen(prop->value); | |
110 | selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); | |
111 | ||
112 | /* Try to add an existing property - should fail */ | |
113 | prop++; | |
114 | prop->name = "new-property"; | |
115 | prop->value = "new-property-data-should-fail"; | |
116 | prop->length = strlen(prop->value); | |
117 | selftest(of_add_property(np, prop) != 0, | |
118 | "Adding an existing property should have failed\n"); | |
119 | ||
120 | /* Try to modify an existing property - should pass */ | |
121 | prop->value = "modify-property-data-should-pass"; | |
122 | prop->length = strlen(prop->value); | |
123 | selftest(of_update_property(np, prop) == 0, | |
124 | "Updating an existing property should have passed\n"); | |
125 | ||
126 | /* Try to modify non-existent property - should pass*/ | |
127 | prop++; | |
128 | prop->name = "modify-property"; | |
129 | prop->value = "modify-missing-property-data-should-pass"; | |
130 | prop->length = strlen(prop->value); | |
131 | selftest(of_update_property(np, prop) == 0, | |
132 | "Updating a missing property should have passed\n"); | |
133 | ||
134 | /* Remove property - should pass */ | |
135 | selftest(of_remove_property(np, prop) == 0, | |
136 | "Removing a property should have passed\n"); | |
137 | ||
138 | /* Adding very large property - should pass */ | |
139 | prop++; | |
140 | prop->name = "large-property-PAGE_SIZEx8"; | |
141 | prop->length = PAGE_SIZE * 8; | |
142 | prop->value = kzalloc(prop->length, GFP_KERNEL); | |
143 | selftest(prop->value != NULL, "Unable to allocate large buffer\n"); | |
144 | if (prop->value) | |
145 | selftest(of_add_property(np, prop) == 0, | |
146 | "Adding a large property should have passed\n"); | |
147 | } | |
148 | ||
f2051d6a GL |
149 | static int __init of_selftest_check_node_linkage(struct device_node *np) |
150 | { | |
151 | struct device_node *child, *allnext_index = np; | |
152 | int count = 0, rc; | |
153 | ||
154 | for_each_child_of_node(np, child) { | |
155 | if (child->parent != np) { | |
156 | pr_err("Child node %s links to wrong parent %s\n", | |
157 | child->name, np->name); | |
158 | return -EINVAL; | |
159 | } | |
160 | ||
161 | while (allnext_index && allnext_index != child) | |
162 | allnext_index = allnext_index->allnext; | |
163 | if (allnext_index != child) { | |
164 | pr_err("Node %s is ordered differently in sibling and allnode lists\n", | |
165 | child->name); | |
166 | return -EINVAL; | |
167 | } | |
168 | ||
169 | rc = of_selftest_check_node_linkage(child); | |
170 | if (rc < 0) | |
171 | return rc; | |
172 | count += rc; | |
173 | } | |
174 | ||
175 | return count + 1; | |
176 | } | |
177 | ||
178 | static void __init of_selftest_check_tree_linkage(void) | |
179 | { | |
180 | struct device_node *np; | |
181 | int allnode_count = 0, child_count; | |
182 | ||
183 | if (!of_allnodes) | |
184 | return; | |
185 | ||
186 | for_each_of_allnodes(np) | |
187 | allnode_count++; | |
188 | child_count = of_selftest_check_node_linkage(of_allnodes); | |
189 | ||
190 | selftest(child_count > 0, "Device node data structure is corrupted\n"); | |
191 | selftest(child_count == allnode_count, "allnodes list size (%i) doesn't match" | |
192 | "sibling lists size (%i)\n", allnode_count, child_count); | |
193 | pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); | |
194 | } | |
195 | ||
841ec213 GL |
196 | struct node_hash { |
197 | struct hlist_node node; | |
198 | struct device_node *np; | |
199 | }; | |
200 | ||
2118f4b8 | 201 | static DEFINE_HASHTABLE(phandle_ht, 8); |
841ec213 GL |
202 | static void __init of_selftest_check_phandles(void) |
203 | { | |
204 | struct device_node *np; | |
205 | struct node_hash *nh; | |
206 | struct hlist_node *tmp; | |
207 | int i, dup_count = 0, phandle_count = 0; | |
841ec213 | 208 | |
841ec213 GL |
209 | for_each_of_allnodes(np) { |
210 | if (!np->phandle) | |
211 | continue; | |
212 | ||
2118f4b8 | 213 | hash_for_each_possible(phandle_ht, nh, node, np->phandle) { |
841ec213 GL |
214 | if (nh->np->phandle == np->phandle) { |
215 | pr_info("Duplicate phandle! %i used by %s and %s\n", | |
216 | np->phandle, nh->np->full_name, np->full_name); | |
217 | dup_count++; | |
218 | break; | |
219 | } | |
220 | } | |
221 | ||
222 | nh = kzalloc(sizeof(*nh), GFP_KERNEL); | |
223 | if (WARN_ON(!nh)) | |
224 | return; | |
225 | ||
226 | nh->np = np; | |
2118f4b8 | 227 | hash_add(phandle_ht, &nh->node, np->phandle); |
841ec213 GL |
228 | phandle_count++; |
229 | } | |
230 | selftest(dup_count == 0, "Found %i duplicates in %i phandles\n", | |
231 | dup_count, phandle_count); | |
232 | ||
233 | /* Clean up */ | |
2118f4b8 | 234 | hash_for_each_safe(phandle_ht, i, tmp, nh, node) { |
841ec213 GL |
235 | hash_del(&nh->node); |
236 | kfree(nh); | |
237 | } | |
238 | } | |
239 | ||
53a42093 GL |
240 | static void __init of_selftest_parse_phandle_with_args(void) |
241 | { | |
242 | struct device_node *np; | |
243 | struct of_phandle_args args; | |
cabb7d5b | 244 | int i, rc; |
53a42093 | 245 | |
53a42093 GL |
246 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
247 | if (!np) { | |
248 | pr_err("missing testcase data\n"); | |
249 | return; | |
250 | } | |
251 | ||
bd69f73f GL |
252 | rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); |
253 | selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); | |
254 | ||
f7f951c2 | 255 | for (i = 0; i < 8; i++) { |
53a42093 GL |
256 | bool passed = true; |
257 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
258 | "#phandle-cells", i, &args); | |
259 | ||
260 | /* Test the values from tests-phandle.dtsi */ | |
261 | switch (i) { | |
262 | case 0: | |
263 | passed &= !rc; | |
264 | passed &= (args.args_count == 1); | |
265 | passed &= (args.args[0] == (i + 1)); | |
266 | break; | |
267 | case 1: | |
268 | passed &= !rc; | |
269 | passed &= (args.args_count == 2); | |
270 | passed &= (args.args[0] == (i + 1)); | |
271 | passed &= (args.args[1] == 0); | |
272 | break; | |
273 | case 2: | |
274 | passed &= (rc == -ENOENT); | |
275 | break; | |
276 | case 3: | |
277 | passed &= !rc; | |
278 | passed &= (args.args_count == 3); | |
279 | passed &= (args.args[0] == (i + 1)); | |
280 | passed &= (args.args[1] == 4); | |
281 | passed &= (args.args[2] == 3); | |
282 | break; | |
283 | case 4: | |
284 | passed &= !rc; | |
285 | passed &= (args.args_count == 2); | |
286 | passed &= (args.args[0] == (i + 1)); | |
287 | passed &= (args.args[1] == 100); | |
288 | break; | |
289 | case 5: | |
290 | passed &= !rc; | |
291 | passed &= (args.args_count == 0); | |
292 | break; | |
293 | case 6: | |
294 | passed &= !rc; | |
295 | passed &= (args.args_count == 1); | |
296 | passed &= (args.args[0] == (i + 1)); | |
297 | break; | |
298 | case 7: | |
cabb7d5b | 299 | passed &= (rc == -ENOENT); |
53a42093 GL |
300 | break; |
301 | default: | |
302 | passed = false; | |
303 | } | |
304 | ||
cabb7d5b GL |
305 | selftest(passed, "index %i - data error on node %s rc=%i\n", |
306 | i, args.np->full_name, rc); | |
53a42093 GL |
307 | } |
308 | ||
309 | /* Check for missing list property */ | |
310 | rc = of_parse_phandle_with_args(np, "phandle-list-missing", | |
311 | "#phandle-cells", 0, &args); | |
cabb7d5b | 312 | selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); |
bd69f73f GL |
313 | rc = of_count_phandle_with_args(np, "phandle-list-missing", |
314 | "#phandle-cells"); | |
315 | selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); | |
53a42093 GL |
316 | |
317 | /* Check for missing cells property */ | |
318 | rc = of_parse_phandle_with_args(np, "phandle-list", | |
319 | "#phandle-cells-missing", 0, &args); | |
cabb7d5b | 320 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
321 | rc = of_count_phandle_with_args(np, "phandle-list", |
322 | "#phandle-cells-missing"); | |
323 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
324 | |
325 | /* Check for bad phandle in list */ | |
326 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", | |
327 | "#phandle-cells", 0, &args); | |
cabb7d5b | 328 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
329 | rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", |
330 | "#phandle-cells"); | |
331 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
332 | |
333 | /* Check for incorrectly formed argument list */ | |
334 | rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", | |
335 | "#phandle-cells", 1, &args); | |
cabb7d5b | 336 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); |
bd69f73f GL |
337 | rc = of_count_phandle_with_args(np, "phandle-list-bad-args", |
338 | "#phandle-cells"); | |
339 | selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); | |
53a42093 GL |
340 | } |
341 | ||
a87fa1d8 | 342 | static void __init of_selftest_property_string(void) |
7aff0fe3 | 343 | { |
a87fa1d8 | 344 | const char *strings[4]; |
7aff0fe3 GL |
345 | struct device_node *np; |
346 | int rc; | |
347 | ||
7aff0fe3 GL |
348 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); |
349 | if (!np) { | |
350 | pr_err("No testcase data in device tree\n"); | |
351 | return; | |
352 | } | |
353 | ||
354 | rc = of_property_match_string(np, "phandle-list-names", "first"); | |
355 | selftest(rc == 0, "first expected:0 got:%i\n", rc); | |
356 | rc = of_property_match_string(np, "phandle-list-names", "second"); | |
357 | selftest(rc == 1, "second expected:0 got:%i\n", rc); | |
358 | rc = of_property_match_string(np, "phandle-list-names", "third"); | |
359 | selftest(rc == 2, "third expected:0 got:%i\n", rc); | |
360 | rc = of_property_match_string(np, "phandle-list-names", "fourth"); | |
a87fa1d8 | 361 | selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); |
7aff0fe3 | 362 | rc = of_property_match_string(np, "missing-property", "blah"); |
a87fa1d8 | 363 | selftest(rc == -EINVAL, "missing property; rc=%i\n", rc); |
7aff0fe3 | 364 | rc = of_property_match_string(np, "empty-property", "blah"); |
a87fa1d8 | 365 | selftest(rc == -ENODATA, "empty property; rc=%i\n", rc); |
7aff0fe3 | 366 | rc = of_property_match_string(np, "unterminated-string", "blah"); |
a87fa1d8 GL |
367 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); |
368 | ||
369 | /* of_property_count_strings() tests */ | |
370 | rc = of_property_count_strings(np, "string-property"); | |
371 | selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); | |
372 | rc = of_property_count_strings(np, "phandle-list-names"); | |
373 | selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); | |
374 | rc = of_property_count_strings(np, "unterminated-string"); | |
375 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); | |
376 | rc = of_property_count_strings(np, "unterminated-string-list"); | |
377 | selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); | |
378 | ||
379 | /* of_property_read_string_index() tests */ | |
380 | rc = of_property_read_string_index(np, "string-property", 0, strings); | |
381 | selftest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
382 | strings[0] = NULL; | |
383 | rc = of_property_read_string_index(np, "string-property", 1, strings); | |
384 | selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
385 | rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); | |
386 | selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
387 | rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); | |
388 | selftest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
389 | rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); | |
390 | selftest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
391 | strings[0] = NULL; | |
392 | rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); | |
393 | selftest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
394 | strings[0] = NULL; | |
395 | rc = of_property_read_string_index(np, "unterminated-string", 0, strings); | |
396 | selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
397 | rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); | |
398 | selftest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); | |
399 | strings[0] = NULL; | |
400 | rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ | |
401 | selftest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); | |
402 | strings[1] = NULL; | |
403 | ||
404 | /* of_property_read_string_array() tests */ | |
405 | rc = of_property_read_string_array(np, "string-property", strings, 4); | |
406 | selftest(rc == 1, "Incorrect string count; rc=%i\n", rc); | |
407 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); | |
408 | selftest(rc == 3, "Incorrect string count; rc=%i\n", rc); | |
409 | rc = of_property_read_string_array(np, "unterminated-string", strings, 4); | |
410 | selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); | |
411 | /* -- An incorrectly formed string should cause a failure */ | |
412 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); | |
413 | selftest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); | |
414 | /* -- parsing the correctly formed strings should still work: */ | |
415 | strings[2] = NULL; | |
416 | rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); | |
417 | selftest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); | |
418 | strings[1] = NULL; | |
419 | rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); | |
420 | selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); | |
7aff0fe3 GL |
421 | } |
422 | ||
69843396 PA |
423 | #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ |
424 | (p1)->value && (p2)->value && \ | |
425 | !memcmp((p1)->value, (p2)->value, (p1)->length) && \ | |
426 | !strcmp((p1)->name, (p2)->name)) | |
427 | static void __init of_selftest_property_copy(void) | |
428 | { | |
429 | #ifdef CONFIG_OF_DYNAMIC | |
430 | struct property p1 = { .name = "p1", .length = 0, .value = "" }; | |
431 | struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; | |
432 | struct property *new; | |
433 | ||
434 | new = __of_prop_dup(&p1, GFP_KERNEL); | |
435 | selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); | |
436 | kfree(new->value); | |
437 | kfree(new->name); | |
438 | kfree(new); | |
439 | ||
440 | new = __of_prop_dup(&p2, GFP_KERNEL); | |
441 | selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); | |
442 | kfree(new->value); | |
443 | kfree(new->name); | |
444 | kfree(new); | |
445 | #endif | |
446 | } | |
447 | ||
201c910b PA |
448 | static void __init of_selftest_changeset(void) |
449 | { | |
450 | #ifdef CONFIG_OF_DYNAMIC | |
451 | struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" }; | |
452 | struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; | |
453 | struct property *ppremove; | |
454 | struct device_node *n1, *n2, *n21, *nremove, *parent; | |
455 | struct of_changeset chgset; | |
456 | ||
457 | of_changeset_init(&chgset); | |
458 | n1 = __of_node_alloc("/testcase-data/changeset/n1", GFP_KERNEL); | |
459 | selftest(n1, "testcase setup failure\n"); | |
460 | n2 = __of_node_alloc("/testcase-data/changeset/n2", GFP_KERNEL); | |
461 | selftest(n2, "testcase setup failure\n"); | |
462 | n21 = __of_node_alloc("/testcase-data/changeset/n2/n21", GFP_KERNEL); | |
463 | selftest(n21, "testcase setup failure %p\n", n21); | |
464 | nremove = of_find_node_by_path("/testcase-data/changeset/node-remove"); | |
465 | selftest(nremove, "testcase setup failure\n"); | |
466 | ppadd = __of_prop_dup(&padd, GFP_KERNEL); | |
467 | selftest(ppadd, "testcase setup failure\n"); | |
468 | ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); | |
469 | selftest(ppupdate, "testcase setup failure\n"); | |
470 | parent = nremove->parent; | |
471 | n1->parent = parent; | |
472 | n2->parent = parent; | |
473 | n21->parent = n2; | |
474 | n2->child = n21; | |
475 | ppremove = of_find_property(parent, "prop-remove", NULL); | |
476 | selftest(ppremove, "failed to find removal prop"); | |
477 | ||
478 | of_changeset_init(&chgset); | |
479 | selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); | |
480 | selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); | |
481 | selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); | |
482 | selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); | |
483 | selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n"); | |
484 | selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); | |
485 | selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); | |
486 | mutex_lock(&of_mutex); | |
487 | selftest(!of_changeset_apply(&chgset), "apply failed\n"); | |
488 | mutex_unlock(&of_mutex); | |
489 | ||
490 | mutex_lock(&of_mutex); | |
491 | selftest(!of_changeset_revert(&chgset), "revert failed\n"); | |
492 | mutex_unlock(&of_mutex); | |
493 | ||
494 | of_changeset_destroy(&chgset); | |
495 | #endif | |
496 | } | |
497 | ||
a9f10ca7 GL |
498 | static void __init of_selftest_parse_interrupts(void) |
499 | { | |
500 | struct device_node *np; | |
501 | struct of_phandle_args args; | |
502 | int i, rc; | |
503 | ||
504 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); | |
505 | if (!np) { | |
506 | pr_err("missing testcase data\n"); | |
507 | return; | |
508 | } | |
509 | ||
510 | for (i = 0; i < 4; i++) { | |
511 | bool passed = true; | |
512 | args.args_count = 0; | |
513 | rc = of_irq_parse_one(np, i, &args); | |
514 | ||
515 | passed &= !rc; | |
516 | passed &= (args.args_count == 1); | |
517 | passed &= (args.args[0] == (i + 1)); | |
518 | ||
519 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
520 | i, args.np->full_name, rc); | |
521 | } | |
522 | of_node_put(np); | |
523 | ||
524 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); | |
525 | if (!np) { | |
526 | pr_err("missing testcase data\n"); | |
527 | return; | |
528 | } | |
529 | ||
530 | for (i = 0; i < 4; i++) { | |
531 | bool passed = true; | |
532 | args.args_count = 0; | |
533 | rc = of_irq_parse_one(np, i, &args); | |
534 | ||
535 | /* Test the values from tests-phandle.dtsi */ | |
536 | switch (i) { | |
537 | case 0: | |
538 | passed &= !rc; | |
539 | passed &= (args.args_count == 1); | |
540 | passed &= (args.args[0] == 9); | |
541 | break; | |
542 | case 1: | |
543 | passed &= !rc; | |
544 | passed &= (args.args_count == 3); | |
545 | passed &= (args.args[0] == 10); | |
546 | passed &= (args.args[1] == 11); | |
547 | passed &= (args.args[2] == 12); | |
548 | break; | |
549 | case 2: | |
550 | passed &= !rc; | |
551 | passed &= (args.args_count == 2); | |
552 | passed &= (args.args[0] == 13); | |
553 | passed &= (args.args[1] == 14); | |
554 | break; | |
555 | case 3: | |
556 | passed &= !rc; | |
557 | passed &= (args.args_count == 2); | |
558 | passed &= (args.args[0] == 15); | |
559 | passed &= (args.args[1] == 16); | |
560 | break; | |
561 | default: | |
562 | passed = false; | |
563 | } | |
564 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
565 | i, args.np->full_name, rc); | |
566 | } | |
567 | of_node_put(np); | |
568 | } | |
569 | ||
79d97015 GL |
570 | static void __init of_selftest_parse_interrupts_extended(void) |
571 | { | |
572 | struct device_node *np; | |
573 | struct of_phandle_args args; | |
574 | int i, rc; | |
575 | ||
576 | np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); | |
577 | if (!np) { | |
578 | pr_err("missing testcase data\n"); | |
579 | return; | |
580 | } | |
581 | ||
582 | for (i = 0; i < 7; i++) { | |
583 | bool passed = true; | |
584 | rc = of_irq_parse_one(np, i, &args); | |
585 | ||
586 | /* Test the values from tests-phandle.dtsi */ | |
587 | switch (i) { | |
588 | case 0: | |
589 | passed &= !rc; | |
590 | passed &= (args.args_count == 1); | |
591 | passed &= (args.args[0] == 1); | |
592 | break; | |
593 | case 1: | |
594 | passed &= !rc; | |
595 | passed &= (args.args_count == 3); | |
596 | passed &= (args.args[0] == 2); | |
597 | passed &= (args.args[1] == 3); | |
598 | passed &= (args.args[2] == 4); | |
599 | break; | |
600 | case 2: | |
601 | passed &= !rc; | |
602 | passed &= (args.args_count == 2); | |
603 | passed &= (args.args[0] == 5); | |
604 | passed &= (args.args[1] == 6); | |
605 | break; | |
606 | case 3: | |
607 | passed &= !rc; | |
608 | passed &= (args.args_count == 1); | |
609 | passed &= (args.args[0] == 9); | |
610 | break; | |
611 | case 4: | |
612 | passed &= !rc; | |
613 | passed &= (args.args_count == 3); | |
614 | passed &= (args.args[0] == 10); | |
615 | passed &= (args.args[1] == 11); | |
616 | passed &= (args.args[2] == 12); | |
617 | break; | |
618 | case 5: | |
619 | passed &= !rc; | |
620 | passed &= (args.args_count == 2); | |
621 | passed &= (args.args[0] == 13); | |
622 | passed &= (args.args[1] == 14); | |
623 | break; | |
624 | case 6: | |
625 | passed &= !rc; | |
626 | passed &= (args.args_count == 1); | |
627 | passed &= (args.args[0] == 15); | |
628 | break; | |
629 | default: | |
630 | passed = false; | |
631 | } | |
632 | ||
633 | selftest(passed, "index %i - data error on node %s rc=%i\n", | |
634 | i, args.np->full_name, rc); | |
635 | } | |
636 | of_node_put(np); | |
637 | } | |
638 | ||
1f42e5dd GL |
639 | static struct of_device_id match_node_table[] = { |
640 | { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ | |
641 | { .data = "B", .type = "type1", }, /* followed by type alone */ | |
642 | ||
643 | { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ | |
644 | { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ | |
645 | { .data = "Cc", .name = "name2", .type = "type2", }, | |
646 | ||
647 | { .data = "E", .compatible = "compat3" }, | |
648 | { .data = "G", .compatible = "compat2", }, | |
649 | { .data = "H", .compatible = "compat2", .name = "name5", }, | |
650 | { .data = "I", .compatible = "compat2", .type = "type1", }, | |
651 | { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, | |
652 | { .data = "K", .compatible = "compat2", .name = "name9", }, | |
653 | {} | |
654 | }; | |
655 | ||
656 | static struct { | |
657 | const char *path; | |
658 | const char *data; | |
659 | } match_node_tests[] = { | |
660 | { .path = "/testcase-data/match-node/name0", .data = "A", }, | |
661 | { .path = "/testcase-data/match-node/name1", .data = "B", }, | |
662 | { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, | |
663 | { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, | |
664 | { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, | |
665 | { .path = "/testcase-data/match-node/name3", .data = "E", }, | |
666 | { .path = "/testcase-data/match-node/name4", .data = "G", }, | |
667 | { .path = "/testcase-data/match-node/name5", .data = "H", }, | |
668 | { .path = "/testcase-data/match-node/name6", .data = "G", }, | |
669 | { .path = "/testcase-data/match-node/name7", .data = "I", }, | |
670 | { .path = "/testcase-data/match-node/name8", .data = "J", }, | |
671 | { .path = "/testcase-data/match-node/name9", .data = "K", }, | |
672 | }; | |
673 | ||
674 | static void __init of_selftest_match_node(void) | |
675 | { | |
676 | struct device_node *np; | |
677 | const struct of_device_id *match; | |
678 | int i; | |
679 | ||
680 | for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { | |
681 | np = of_find_node_by_path(match_node_tests[i].path); | |
682 | if (!np) { | |
683 | selftest(0, "missing testcase node %s\n", | |
684 | match_node_tests[i].path); | |
685 | continue; | |
686 | } | |
687 | ||
688 | match = of_match_node(match_node_table, np); | |
689 | if (!match) { | |
690 | selftest(0, "%s didn't match anything\n", | |
691 | match_node_tests[i].path); | |
692 | continue; | |
693 | } | |
694 | ||
695 | if (strcmp(match->data, match_node_tests[i].data) != 0) { | |
696 | selftest(0, "%s got wrong match. expected %s, got %s\n", | |
697 | match_node_tests[i].path, match_node_tests[i].data, | |
698 | (const char *)match->data); | |
699 | continue; | |
700 | } | |
701 | selftest(1, "passed"); | |
702 | } | |
703 | } | |
704 | ||
82c0f589 RH |
705 | static void __init of_selftest_platform_populate(void) |
706 | { | |
707 | int irq; | |
fb2caa50 | 708 | struct device_node *np, *child; |
82c0f589 | 709 | struct platform_device *pdev; |
fb2caa50 RH |
710 | struct of_device_id match[] = { |
711 | { .compatible = "test-device", }, | |
712 | {} | |
713 | }; | |
82c0f589 RH |
714 | |
715 | np = of_find_node_by_path("/testcase-data"); | |
716 | of_platform_populate(np, of_default_bus_match_table, NULL, NULL); | |
717 | ||
718 | /* Test that a missing irq domain returns -EPROBE_DEFER */ | |
719 | np = of_find_node_by_path("/testcase-data/testcase-device1"); | |
720 | pdev = of_find_device_by_node(np); | |
7d1cdc89 RH |
721 | selftest(pdev, "device 1 creation failed\n"); |
722 | ||
82c0f589 | 723 | irq = platform_get_irq(pdev, 0); |
7d1cdc89 | 724 | selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq); |
82c0f589 RH |
725 | |
726 | /* Test that a parsing failure does not return -EPROBE_DEFER */ | |
727 | np = of_find_node_by_path("/testcase-data/testcase-device2"); | |
728 | pdev = of_find_device_by_node(np); | |
7d1cdc89 | 729 | selftest(pdev, "device 2 creation failed\n"); |
82c0f589 | 730 | irq = platform_get_irq(pdev, 0); |
7d1cdc89 | 731 | selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq); |
82c0f589 | 732 | |
fb2caa50 RH |
733 | np = of_find_node_by_path("/testcase-data/platform-tests"); |
734 | if (!np) { | |
735 | pr_err("No testcase data in device tree\n"); | |
736 | return; | |
737 | } | |
738 | ||
739 | for_each_child_of_node(np, child) { | |
740 | struct device_node *grandchild; | |
741 | of_platform_populate(child, match, NULL, NULL); | |
742 | for_each_child_of_node(child, grandchild) | |
743 | selftest(of_find_device_by_node(grandchild), | |
744 | "Could not create device for node '%s'\n", | |
745 | grandchild->name); | |
746 | } | |
82c0f589 RH |
747 | } |
748 | ||
ae9304c9 GM |
749 | /** |
750 | * update_node_properties - adds the properties | |
751 | * of np into dup node (present in live tree) and | |
752 | * updates parent of children of np to dup. | |
753 | * | |
754 | * @np: node already present in live tree | |
755 | * @dup: node present in live tree to be updated | |
756 | */ | |
757 | static void update_node_properties(struct device_node *np, | |
758 | struct device_node *dup) | |
759 | { | |
760 | struct property *prop; | |
761 | struct device_node *child; | |
762 | ||
763 | for_each_property_of_node(np, prop) | |
764 | of_add_property(dup, prop); | |
765 | ||
766 | for_each_child_of_node(np, child) | |
767 | child->parent = dup; | |
768 | } | |
769 | ||
770 | /** | |
771 | * attach_node_and_children - attaches nodes | |
772 | * and its children to live tree | |
773 | * | |
774 | * @np: Node to attach to live tree | |
775 | */ | |
776 | static int attach_node_and_children(struct device_node *np) | |
777 | { | |
778 | struct device_node *next, *root = np, *dup; | |
779 | ||
ae9304c9 GM |
780 | /* skip root node */ |
781 | np = np->child; | |
782 | /* storing a copy in temporary node */ | |
783 | dup = np; | |
784 | ||
785 | while (dup) { | |
e66c98c7 GL |
786 | if (WARN_ON(last_node_index >= NO_OF_NODES)) |
787 | return -EINVAL; | |
ae9304c9 GM |
788 | nodes[last_node_index++] = dup; |
789 | dup = dup->sibling; | |
790 | } | |
791 | dup = NULL; | |
792 | ||
793 | while (np) { | |
794 | next = np->allnext; | |
795 | dup = of_find_node_by_path(np->full_name); | |
796 | if (dup) | |
797 | update_node_properties(np, dup); | |
798 | else { | |
799 | np->child = NULL; | |
800 | if (np->parent == root) | |
801 | np->parent = of_allnodes; | |
802 | of_attach_node(np); | |
803 | } | |
804 | np = next; | |
805 | } | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | /** | |
811 | * selftest_data_add - Reads, copies data from | |
812 | * linked tree and attaches it to the live tree | |
813 | */ | |
814 | static int __init selftest_data_add(void) | |
815 | { | |
816 | void *selftest_data; | |
b951f9dc | 817 | struct device_node *selftest_data_node, *np; |
ae9304c9 GM |
818 | extern uint8_t __dtb_testcases_begin[]; |
819 | extern uint8_t __dtb_testcases_end[]; | |
820 | const int size = __dtb_testcases_end - __dtb_testcases_begin; | |
2eb46da2 | 821 | int rc; |
ae9304c9 | 822 | |
b951f9dc | 823 | if (!size) { |
ae9304c9 GM |
824 | pr_warn("%s: No testcase data to attach; not running tests\n", |
825 | __func__); | |
826 | return -ENODATA; | |
827 | } | |
828 | ||
829 | /* creating copy */ | |
830 | selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); | |
831 | ||
832 | if (!selftest_data) { | |
833 | pr_warn("%s: Failed to allocate memory for selftest_data; " | |
834 | "not running tests\n", __func__); | |
835 | return -ENOMEM; | |
836 | } | |
837 | of_fdt_unflatten_tree(selftest_data, &selftest_data_node); | |
b951f9dc GM |
838 | if (!selftest_data_node) { |
839 | pr_warn("%s: No tree to attach; not running tests\n", __func__); | |
840 | return -ENODATA; | |
841 | } | |
2eb46da2 GL |
842 | of_node_set_flag(selftest_data_node, OF_DETACHED); |
843 | rc = of_resolve_phandles(selftest_data_node); | |
844 | if (rc) { | |
845 | pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); | |
846 | return -EINVAL; | |
847 | } | |
b951f9dc GM |
848 | |
849 | if (!of_allnodes) { | |
850 | /* enabling flag for removing nodes */ | |
851 | selftest_live_tree = true; | |
852 | of_allnodes = selftest_data_node; | |
853 | ||
854 | for_each_of_allnodes(np) | |
855 | __of_attach_node_sysfs(np); | |
856 | of_aliases = of_find_node_by_path("/aliases"); | |
857 | of_chosen = of_find_node_by_path("/chosen"); | |
858 | return 0; | |
859 | } | |
ae9304c9 GM |
860 | |
861 | /* attach the sub-tree to live tree */ | |
862 | return attach_node_and_children(selftest_data_node); | |
863 | } | |
864 | ||
865 | /** | |
866 | * detach_node_and_children - detaches node | |
867 | * and its children from live tree | |
868 | * | |
869 | * @np: Node to detach from live tree | |
870 | */ | |
871 | static void detach_node_and_children(struct device_node *np) | |
872 | { | |
873 | while (np->child) | |
874 | detach_node_and_children(np->child); | |
ae9304c9 GM |
875 | of_detach_node(np); |
876 | } | |
877 | ||
878 | /** | |
879 | * selftest_data_remove - removes the selftest data | |
880 | * nodes from the live tree | |
881 | */ | |
882 | static void selftest_data_remove(void) | |
883 | { | |
884 | struct device_node *np; | |
885 | struct property *prop; | |
886 | ||
b951f9dc GM |
887 | if (selftest_live_tree) { |
888 | of_node_put(of_aliases); | |
889 | of_node_put(of_chosen); | |
890 | of_aliases = NULL; | |
891 | of_chosen = NULL; | |
892 | for_each_child_of_node(of_allnodes, np) | |
893 | detach_node_and_children(np); | |
894 | __of_detach_node_sysfs(of_allnodes); | |
895 | of_allnodes = NULL; | |
896 | return; | |
897 | } | |
898 | ||
c1a2086e | 899 | while (last_node_index-- > 0) { |
ae9304c9 GM |
900 | if (nodes[last_node_index]) { |
901 | np = of_find_node_by_path(nodes[last_node_index]->full_name); | |
902 | if (strcmp(np->full_name, "/aliases") != 0) { | |
e66c98c7 | 903 | detach_node_and_children(np); |
ae9304c9 GM |
904 | } else { |
905 | for_each_property_of_node(np, prop) { | |
906 | if (strcmp(prop->name, "testcase-alias") == 0) | |
907 | of_remove_property(np, prop); | |
908 | } | |
909 | } | |
910 | } | |
ae9304c9 GM |
911 | } |
912 | } | |
913 | ||
53a42093 GL |
914 | static int __init of_selftest(void) |
915 | { | |
916 | struct device_node *np; | |
ae9304c9 GM |
917 | int res; |
918 | ||
919 | /* adding data for selftest */ | |
920 | res = selftest_data_add(); | |
921 | if (res) | |
922 | return res; | |
53a42093 GL |
923 | |
924 | np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); | |
925 | if (!np) { | |
926 | pr_info("No testcase data in device tree; not running tests\n"); | |
927 | return 0; | |
928 | } | |
929 | of_node_put(np); | |
930 | ||
931 | pr_info("start of selftest - you will see error messages\n"); | |
f2051d6a | 932 | of_selftest_check_tree_linkage(); |
841ec213 | 933 | of_selftest_check_phandles(); |
ae91ff72 | 934 | of_selftest_find_node_by_name(); |
7e66c5c7 | 935 | of_selftest_dynamic(); |
53a42093 | 936 | of_selftest_parse_phandle_with_args(); |
a87fa1d8 | 937 | of_selftest_property_string(); |
69843396 | 938 | of_selftest_property_copy(); |
201c910b | 939 | of_selftest_changeset(); |
a9f10ca7 | 940 | of_selftest_parse_interrupts(); |
79d97015 | 941 | of_selftest_parse_interrupts_extended(); |
1f42e5dd | 942 | of_selftest_match_node(); |
82c0f589 | 943 | of_selftest_platform_populate(); |
ae9304c9 GM |
944 | |
945 | /* removing selftest data from live tree */ | |
946 | selftest_data_remove(); | |
947 | ||
f2051d6a GL |
948 | /* Double check linkage after removing testcase data */ |
949 | of_selftest_check_tree_linkage(); | |
950 | ||
951 | pr_info("end of selftest - %i passed, %i failed\n", | |
952 | selftest_results.passed, selftest_results.failed); | |
953 | ||
53a42093 GL |
954 | return 0; |
955 | } | |
956 | late_initcall(of_selftest); |