1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Self tests for device tree subsystem
4 */
5
6 #define pr_fmt(fmt) "### dt-test ### " fmt
7
8 #include <linux/memblock.h>
9 #include <linux/clk.h>
10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */
11 #include <linux/err.h>
12 #include <linux/errno.h>
13 #include <linux/hashtable.h>
14 #include <linux/libfdt.h>
15 #include <linux/of.h>
16 #include <linux/of_address.h>
17 #include <linux/of_fdt.h>
18 #include <linux/of_irq.h>
19 #include <linux/of_platform.h>
20 #include <linux/list.h>
21 #include <linux/mutex.h>
22 #include <linux/slab.h>
23 #include <linux/device.h>
24 #include <linux/platform_device.h>
25
26 #include <linux/i2c.h>
27 #include <linux/i2c-mux.h>
28 #include <linux/gpio/driver.h>
29
30 #include <linux/bitops.h>
31
32 #include "of_private.h"
33
34 static struct unittest_results {
35 int passed;
36 int failed;
37 } unittest_results;
38
39 #define unittest(result, fmt, ...) ({ \
40 bool failed = !(result); \
41 if (failed) { \
42 unittest_results.failed++; \
43 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
44 } else { \
45 unittest_results.passed++; \
46 pr_debug("pass %s():%i\n", __func__, __LINE__); \
47 } \
48 failed; \
49 })
50
51 /*
52 * Expected message may have a message level other than KERN_INFO.
53 * Print the expected message only if the current loglevel will allow
54 * the actual message to print.
55 *
56 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by
57 * pr_debug().
58 */
59 #define EXPECT_BEGIN(level, fmt, ...) \
60 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
61
62 #define EXPECT_END(level, fmt, ...) \
63 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
64
of_unittest_find_node_by_name(void)65 static void __init of_unittest_find_node_by_name(void)
66 {
67 struct device_node *np;
68 const char *options, *name;
69
70 np = of_find_node_by_path("/testcase-data");
71 name = kasprintf(GFP_KERNEL, "%pOF", np);
72 unittest(np && !strcmp("/testcase-data", name),
73 "find /testcase-data failed\n");
74 of_node_put(np);
75 kfree(name);
76
77 /* Test if trailing '/' works */
78 np = of_find_node_by_path("/testcase-data/");
79 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
80
81 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
82 name = kasprintf(GFP_KERNEL, "%pOF", np);
83 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
84 "find /testcase-data/phandle-tests/consumer-a failed\n");
85 of_node_put(np);
86 kfree(name);
87
88 np = of_find_node_by_path("testcase-alias");
89 name = kasprintf(GFP_KERNEL, "%pOF", np);
90 unittest(np && !strcmp("/testcase-data", name),
91 "find testcase-alias failed\n");
92 of_node_put(np);
93 kfree(name);
94
95 /* Test if trailing '/' works on aliases */
96 np = of_find_node_by_path("testcase-alias/");
97 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
98
99 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
100 name = kasprintf(GFP_KERNEL, "%pOF", np);
101 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
102 "find testcase-alias/phandle-tests/consumer-a failed\n");
103 of_node_put(np);
104 kfree(name);
105
106 np = of_find_node_by_path("/testcase-data/missing-path");
107 unittest(!np, "non-existent path returned node %pOF\n", np);
108 of_node_put(np);
109
110 np = of_find_node_by_path("missing-alias");
111 unittest(!np, "non-existent alias returned node %pOF\n", np);
112 of_node_put(np);
113
114 np = of_find_node_by_path("testcase-alias/missing-path");
115 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
116 of_node_put(np);
117
118 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
119 unittest(np && !strcmp("testoption", options),
120 "option path test failed\n");
121 of_node_put(np);
122
123 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
124 unittest(np && !strcmp("test/option", options),
125 "option path test, subcase #1 failed\n");
126 of_node_put(np);
127
128 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
129 unittest(np && !strcmp("test/option", options),
130 "option path test, subcase #2 failed\n");
131 of_node_put(np);
132
133 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
134 unittest(np, "NULL option path test failed\n");
135 of_node_put(np);
136
137 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
138 &options);
139 unittest(np && !strcmp("testaliasoption", options),
140 "option alias path test failed\n");
141 of_node_put(np);
142
143 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
144 &options);
145 unittest(np && !strcmp("test/alias/option", options),
146 "option alias path test, subcase #1 failed\n");
147 of_node_put(np);
148
149 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
150 unittest(np, "NULL option alias path test failed\n");
151 of_node_put(np);
152
153 options = "testoption";
154 np = of_find_node_opts_by_path("testcase-alias", &options);
155 unittest(np && !options, "option clearing test failed\n");
156 of_node_put(np);
157
158 options = "testoption";
159 np = of_find_node_opts_by_path("/", &options);
160 unittest(np && !options, "option clearing root node test failed\n");
161 of_node_put(np);
162 }
163
of_unittest_dynamic(void)164 static void __init of_unittest_dynamic(void)
165 {
166 struct device_node *np;
167 struct property *prop;
168
169 np = of_find_node_by_path("/testcase-data");
170 if (!np) {
171 pr_err("missing testcase data\n");
172 return;
173 }
174
175 /* Array of 4 properties for the purpose of testing */
176 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
177 if (!prop) {
178 unittest(0, "kzalloc() failed\n");
179 return;
180 }
181
182 /* Add a new property - should pass*/
183 prop->name = "new-property";
184 prop->value = "new-property-data";
185 prop->length = strlen(prop->value) + 1;
186 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
187
188 /* Try to add an existing property - should fail */
189 prop++;
190 prop->name = "new-property";
191 prop->value = "new-property-data-should-fail";
192 prop->length = strlen(prop->value) + 1;
193 unittest(of_add_property(np, prop) != 0,
194 "Adding an existing property should have failed\n");
195
196 /* Try to modify an existing property - should pass */
197 prop->value = "modify-property-data-should-pass";
198 prop->length = strlen(prop->value) + 1;
199 unittest(of_update_property(np, prop) == 0,
200 "Updating an existing property should have passed\n");
201
202 /* Try to modify non-existent property - should pass*/
203 prop++;
204 prop->name = "modify-property";
205 prop->value = "modify-missing-property-data-should-pass";
206 prop->length = strlen(prop->value) + 1;
207 unittest(of_update_property(np, prop) == 0,
208 "Updating a missing property should have passed\n");
209
210 /* Remove property - should pass */
211 unittest(of_remove_property(np, prop) == 0,
212 "Removing a property should have passed\n");
213
214 /* Adding very large property - should pass */
215 prop++;
216 prop->name = "large-property-PAGE_SIZEx8";
217 prop->length = PAGE_SIZE * 8;
218 prop->value = kzalloc(prop->length, GFP_KERNEL);
219 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
220 if (prop->value)
221 unittest(of_add_property(np, prop) == 0,
222 "Adding a large property should have passed\n");
223 }
224
of_unittest_check_node_linkage(struct device_node * np)225 static int __init of_unittest_check_node_linkage(struct device_node *np)
226 {
227 struct device_node *child;
228 int count = 0, rc;
229
230 for_each_child_of_node(np, child) {
231 if (child->parent != np) {
232 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
233 child, np);
234 rc = -EINVAL;
235 goto put_child;
236 }
237
238 rc = of_unittest_check_node_linkage(child);
239 if (rc < 0)
240 goto put_child;
241 count += rc;
242 }
243
244 return count + 1;
245 put_child:
246 of_node_put(child);
247 return rc;
248 }
249
of_unittest_check_tree_linkage(void)250 static void __init of_unittest_check_tree_linkage(void)
251 {
252 struct device_node *np;
253 int allnode_count = 0, child_count;
254
255 if (!of_root)
256 return;
257
258 for_each_of_allnodes(np)
259 allnode_count++;
260 child_count = of_unittest_check_node_linkage(of_root);
261
262 unittest(child_count > 0, "Device node data structure is corrupted\n");
263 unittest(child_count == allnode_count,
264 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
265 allnode_count, child_count);
266 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
267 }
268
of_unittest_printf_one(struct device_node * np,const char * fmt,const char * expected)269 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
270 const char *expected)
271 {
272 unsigned char *buf;
273 int buf_size;
274 int size, i;
275
276 buf_size = strlen(expected) + 10;
277 buf = kmalloc(buf_size, GFP_KERNEL);
278 if (!buf)
279 return;
280
281 /* Baseline; check conversion with a large size limit */
282 memset(buf, 0xff, buf_size);
283 size = snprintf(buf, buf_size - 2, fmt, np);
284
285 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
286 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
287 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
288 fmt, expected, buf);
289
290 /* Make sure length limits work */
291 size++;
292 for (i = 0; i < 2; i++, size--) {
293 /* Clear the buffer, and make sure it works correctly still */
294 memset(buf, 0xff, buf_size);
295 snprintf(buf, size+1, fmt, np);
296 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
297 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
298 size, fmt, expected, buf);
299 }
300 kfree(buf);
301 }
302
of_unittest_printf(void)303 static void __init of_unittest_printf(void)
304 {
305 struct device_node *np;
306 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
307 char phandle_str[16] = "";
308
309 np = of_find_node_by_path(full_name);
310 if (!np) {
311 unittest(np, "testcase data missing\n");
312 return;
313 }
314
315 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
316
317 of_unittest_printf_one(np, "%pOF", full_name);
318 of_unittest_printf_one(np, "%pOFf", full_name);
319 of_unittest_printf_one(np, "%pOFn", "dev");
320 of_unittest_printf_one(np, "%2pOFn", "dev");
321 of_unittest_printf_one(np, "%5pOFn", " dev");
322 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
323 of_unittest_printf_one(np, "%pOFp", phandle_str);
324 of_unittest_printf_one(np, "%pOFP", "dev@100");
325 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
326 of_unittest_printf_one(np, "%10pOFP", " dev@100");
327 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
328 of_unittest_printf_one(of_root, "%pOFP", "/");
329 of_unittest_printf_one(np, "%pOFF", "----");
330 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
331 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
332 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
333 of_unittest_printf_one(np, "%pOFC",
334 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
335 }
336
337 struct node_hash {
338 struct hlist_node node;
339 struct device_node *np;
340 };
341
342 static DEFINE_HASHTABLE(phandle_ht, 8);
of_unittest_check_phandles(void)343 static void __init of_unittest_check_phandles(void)
344 {
345 struct device_node *np;
346 struct node_hash *nh;
347 struct hlist_node *tmp;
348 int i, dup_count = 0, phandle_count = 0;
349
350 for_each_of_allnodes(np) {
351 if (!np->phandle)
352 continue;
353
354 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
355 if (nh->np->phandle == np->phandle) {
356 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
357 np->phandle, nh->np, np);
358 dup_count++;
359 break;
360 }
361 }
362
363 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
364 if (!nh)
365 return;
366
367 nh->np = np;
368 hash_add(phandle_ht, &nh->node, np->phandle);
369 phandle_count++;
370 }
371 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
372 dup_count, phandle_count);
373
374 /* Clean up */
375 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
376 hash_del(&nh->node);
377 kfree(nh);
378 }
379 }
380
of_unittest_parse_phandle_with_args(void)381 static void __init of_unittest_parse_phandle_with_args(void)
382 {
383 struct device_node *np;
384 struct of_phandle_args args;
385 int i, rc;
386
387 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
388 if (!np) {
389 pr_err("missing testcase data\n");
390 return;
391 }
392
393 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
394 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
395
396 for (i = 0; i < 8; i++) {
397 bool passed = true;
398
399 memset(&args, 0, sizeof(args));
400 rc = of_parse_phandle_with_args(np, "phandle-list",
401 "#phandle-cells", i, &args);
402
403 /* Test the values from tests-phandle.dtsi */
404 switch (i) {
405 case 0:
406 passed &= !rc;
407 passed &= (args.args_count == 1);
408 passed &= (args.args[0] == (i + 1));
409 break;
410 case 1:
411 passed &= !rc;
412 passed &= (args.args_count == 2);
413 passed &= (args.args[0] == (i + 1));
414 passed &= (args.args[1] == 0);
415 break;
416 case 2:
417 passed &= (rc == -ENOENT);
418 break;
419 case 3:
420 passed &= !rc;
421 passed &= (args.args_count == 3);
422 passed &= (args.args[0] == (i + 1));
423 passed &= (args.args[1] == 4);
424 passed &= (args.args[2] == 3);
425 break;
426 case 4:
427 passed &= !rc;
428 passed &= (args.args_count == 2);
429 passed &= (args.args[0] == (i + 1));
430 passed &= (args.args[1] == 100);
431 break;
432 case 5:
433 passed &= !rc;
434 passed &= (args.args_count == 0);
435 break;
436 case 6:
437 passed &= !rc;
438 passed &= (args.args_count == 1);
439 passed &= (args.args[0] == (i + 1));
440 break;
441 case 7:
442 passed &= (rc == -ENOENT);
443 break;
444 default:
445 passed = false;
446 }
447
448 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
449 i, args.np, rc);
450 }
451
452 /* Check for missing list property */
453 memset(&args, 0, sizeof(args));
454 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
455 "#phandle-cells", 0, &args);
456 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
457 rc = of_count_phandle_with_args(np, "phandle-list-missing",
458 "#phandle-cells");
459 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
460
461 /* Check for missing cells property */
462 memset(&args, 0, sizeof(args));
463
464 EXPECT_BEGIN(KERN_INFO,
465 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
466
467 rc = of_parse_phandle_with_args(np, "phandle-list",
468 "#phandle-cells-missing", 0, &args);
469
470 EXPECT_END(KERN_INFO,
471 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
472
473 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
474
475 EXPECT_BEGIN(KERN_INFO,
476 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
477
478 rc = of_count_phandle_with_args(np, "phandle-list",
479 "#phandle-cells-missing");
480
481 EXPECT_END(KERN_INFO,
482 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
483
484 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
485
486 /* Check for bad phandle in list */
487 memset(&args, 0, sizeof(args));
488
489 EXPECT_BEGIN(KERN_INFO,
490 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
491
492 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
493 "#phandle-cells", 0, &args);
494
495 EXPECT_END(KERN_INFO,
496 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
497
498 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
499
500 EXPECT_BEGIN(KERN_INFO,
501 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
502
503 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
504 "#phandle-cells");
505
506 EXPECT_END(KERN_INFO,
507 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
508
509 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
510
511 /* Check for incorrectly formed argument list */
512 memset(&args, 0, sizeof(args));
513
514 EXPECT_BEGIN(KERN_INFO,
515 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
516
517 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
518 "#phandle-cells", 1, &args);
519
520 EXPECT_END(KERN_INFO,
521 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
522
523 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
524
525 EXPECT_BEGIN(KERN_INFO,
526 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
527
528 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
529 "#phandle-cells");
530
531 EXPECT_END(KERN_INFO,
532 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
533
534 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
535 }
536
of_unittest_parse_phandle_with_args_map(void)537 static void __init of_unittest_parse_phandle_with_args_map(void)
538 {
539 struct device_node *np, *p0, *p1, *p2, *p3;
540 struct of_phandle_args args;
541 int i, rc;
542
543 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
544 if (!np) {
545 pr_err("missing testcase data\n");
546 return;
547 }
548
549 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
550 if (!p0) {
551 pr_err("missing testcase data\n");
552 return;
553 }
554
555 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
556 if (!p1) {
557 pr_err("missing testcase data\n");
558 return;
559 }
560
561 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
562 if (!p2) {
563 pr_err("missing testcase data\n");
564 return;
565 }
566
567 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
568 if (!p3) {
569 pr_err("missing testcase data\n");
570 return;
571 }
572
573 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
574 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
575
576 for (i = 0; i < 8; i++) {
577 bool passed = true;
578
579 memset(&args, 0, sizeof(args));
580 rc = of_parse_phandle_with_args_map(np, "phandle-list",
581 "phandle", i, &args);
582
583 /* Test the values from tests-phandle.dtsi */
584 switch (i) {
585 case 0:
586 passed &= !rc;
587 passed &= (args.np == p1);
588 passed &= (args.args_count == 1);
589 passed &= (args.args[0] == 1);
590 break;
591 case 1:
592 passed &= !rc;
593 passed &= (args.np == p3);
594 passed &= (args.args_count == 3);
595 passed &= (args.args[0] == 2);
596 passed &= (args.args[1] == 5);
597 passed &= (args.args[2] == 3);
598 break;
599 case 2:
600 passed &= (rc == -ENOENT);
601 break;
602 case 3:
603 passed &= !rc;
604 passed &= (args.np == p0);
605 passed &= (args.args_count == 0);
606 break;
607 case 4:
608 passed &= !rc;
609 passed &= (args.np == p1);
610 passed &= (args.args_count == 1);
611 passed &= (args.args[0] == 3);
612 break;
613 case 5:
614 passed &= !rc;
615 passed &= (args.np == p0);
616 passed &= (args.args_count == 0);
617 break;
618 case 6:
619 passed &= !rc;
620 passed &= (args.np == p2);
621 passed &= (args.args_count == 2);
622 passed &= (args.args[0] == 15);
623 passed &= (args.args[1] == 0x20);
624 break;
625 case 7:
626 passed &= (rc == -ENOENT);
627 break;
628 default:
629 passed = false;
630 }
631
632 unittest(passed, "index %i - data error on node %s rc=%i\n",
633 i, args.np->full_name, rc);
634 }
635
636 /* Check for missing list property */
637 memset(&args, 0, sizeof(args));
638 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
639 "phandle", 0, &args);
640 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
641
642 /* Check for missing cells,map,mask property */
643 memset(&args, 0, sizeof(args));
644
645 EXPECT_BEGIN(KERN_INFO,
646 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
647
648 rc = of_parse_phandle_with_args_map(np, "phandle-list",
649 "phandle-missing", 0, &args);
650 EXPECT_END(KERN_INFO,
651 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
652
653 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
654
655 /* Check for bad phandle in list */
656 memset(&args, 0, sizeof(args));
657
658 EXPECT_BEGIN(KERN_INFO,
659 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
660
661 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
662 "phandle", 0, &args);
663 EXPECT_END(KERN_INFO,
664 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
665
666 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
667
668 /* Check for incorrectly formed argument list */
669 memset(&args, 0, sizeof(args));
670
671 EXPECT_BEGIN(KERN_INFO,
672 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
673
674 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
675 "phandle", 1, &args);
676 EXPECT_END(KERN_INFO,
677 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
678
679 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
680 }
681
of_unittest_property_string(void)682 static void __init of_unittest_property_string(void)
683 {
684 const char *strings[4];
685 struct device_node *np;
686 int rc;
687
688 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
689 if (!np) {
690 pr_err("No testcase data in device tree\n");
691 return;
692 }
693
694 rc = of_property_match_string(np, "phandle-list-names", "first");
695 unittest(rc == 0, "first expected:0 got:%i\n", rc);
696 rc = of_property_match_string(np, "phandle-list-names", "second");
697 unittest(rc == 1, "second expected:1 got:%i\n", rc);
698 rc = of_property_match_string(np, "phandle-list-names", "third");
699 unittest(rc == 2, "third expected:2 got:%i\n", rc);
700 rc = of_property_match_string(np, "phandle-list-names", "fourth");
701 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
702 rc = of_property_match_string(np, "missing-property", "blah");
703 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
704 rc = of_property_match_string(np, "empty-property", "blah");
705 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
706 rc = of_property_match_string(np, "unterminated-string", "blah");
707 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
708
709 /* of_property_count_strings() tests */
710 rc = of_property_count_strings(np, "string-property");
711 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
712 rc = of_property_count_strings(np, "phandle-list-names");
713 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
714 rc = of_property_count_strings(np, "unterminated-string");
715 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
716 rc = of_property_count_strings(np, "unterminated-string-list");
717 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
718
719 /* of_property_read_string_index() tests */
720 rc = of_property_read_string_index(np, "string-property", 0, strings);
721 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
722 strings[0] = NULL;
723 rc = of_property_read_string_index(np, "string-property", 1, strings);
724 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
725 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
726 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
727 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
728 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
729 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
730 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
731 strings[0] = NULL;
732 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
733 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
734 strings[0] = NULL;
735 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
736 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
737 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
738 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
739 strings[0] = NULL;
740 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
741 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
742 strings[1] = NULL;
743
744 /* of_property_read_string_array() tests */
745 rc = of_property_read_string_array(np, "string-property", strings, 4);
746 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
747 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
748 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
749 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
750 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
751 /* -- An incorrectly formed string should cause a failure */
752 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
753 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
754 /* -- parsing the correctly formed strings should still work: */
755 strings[2] = NULL;
756 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
757 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
758 strings[1] = NULL;
759 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
760 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
761 }
762
763 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
764 (p1)->value && (p2)->value && \
765 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
766 !strcmp((p1)->name, (p2)->name))
of_unittest_property_copy(void)767 static void __init of_unittest_property_copy(void)
768 {
769 #ifdef CONFIG_OF_DYNAMIC
770 struct property p1 = { .name = "p1", .length = 0, .value = "" };
771 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
772 struct property *new;
773
774 new = __of_prop_dup(&p1, GFP_KERNEL);
775 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
776 kfree(new->value);
777 kfree(new->name);
778 kfree(new);
779
780 new = __of_prop_dup(&p2, GFP_KERNEL);
781 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
782 kfree(new->value);
783 kfree(new->name);
784 kfree(new);
785 #endif
786 }
787
of_unittest_changeset(void)788 static void __init of_unittest_changeset(void)
789 {
790 #ifdef CONFIG_OF_DYNAMIC
791 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
792 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
793 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
794 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
795 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
796 struct property *ppremove;
797 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np;
798 struct of_changeset chgset;
799
800 n1 = __of_node_dup(NULL, "n1");
801 unittest(n1, "testcase setup failure\n");
802
803 n2 = __of_node_dup(NULL, "n2");
804 unittest(n2, "testcase setup failure\n");
805
806 n21 = __of_node_dup(NULL, "n21");
807 unittest(n21, "testcase setup failure %p\n", n21);
808
809 nchangeset = of_find_node_by_path("/testcase-data/changeset");
810 nremove = of_get_child_by_name(nchangeset, "node-remove");
811 unittest(nremove, "testcase setup failure\n");
812
813 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
814 unittest(ppadd, "testcase setup failure\n");
815
816 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
817 unittest(ppname_n1, "testcase setup failure\n");
818
819 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
820 unittest(ppname_n2, "testcase setup failure\n");
821
822 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
823 unittest(ppname_n21, "testcase setup failure\n");
824
825 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
826 unittest(ppupdate, "testcase setup failure\n");
827
828 parent = nchangeset;
829 n1->parent = parent;
830 n2->parent = parent;
831 n21->parent = n2;
832
833 ppremove = of_find_property(parent, "prop-remove", NULL);
834 unittest(ppremove, "failed to find removal prop");
835
836 of_changeset_init(&chgset);
837
838 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
839 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
840
841 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
842 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
843
844 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
845 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
846
847 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
848
849 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
850 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
851 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
852
853 unittest(!of_changeset_apply(&chgset), "apply failed\n");
854
855 of_node_put(nchangeset);
856
857 /* Make sure node names are constructed correctly */
858 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
859 "'%pOF' not added\n", n21);
860 of_node_put(np);
861
862 unittest(!of_changeset_revert(&chgset), "revert failed\n");
863
864 of_changeset_destroy(&chgset);
865
866 of_node_put(n1);
867 of_node_put(n2);
868 of_node_put(n21);
869 #endif
870 }
871
of_unittest_dma_get_max_cpu_address(void)872 static void __init of_unittest_dma_get_max_cpu_address(void)
873 {
874 struct device_node *np;
875 phys_addr_t cpu_addr;
876
877 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
878 return;
879
880 np = of_find_node_by_path("/testcase-data/address-tests");
881 if (!np) {
882 pr_err("missing testcase data\n");
883 return;
884 }
885
886 cpu_addr = of_dma_get_max_cpu_address(np);
887 unittest(cpu_addr == 0x4fffffff,
888 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
889 &cpu_addr, 0x4fffffff);
890 }
891
of_unittest_dma_ranges_one(const char * path,u64 expect_dma_addr,u64 expect_paddr)892 static void __init of_unittest_dma_ranges_one(const char *path,
893 u64 expect_dma_addr, u64 expect_paddr)
894 {
895 #ifdef CONFIG_HAS_DMA
896 struct device_node *np;
897 const struct bus_dma_region *map = NULL;
898 int rc;
899
900 np = of_find_node_by_path(path);
901 if (!np) {
902 pr_err("missing testcase data\n");
903 return;
904 }
905
906 rc = of_dma_get_range(np, &map);
907
908 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
909
910 if (!rc) {
911 phys_addr_t paddr;
912 dma_addr_t dma_addr;
913 struct device *dev_bogus;
914
915 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL);
916 if (!dev_bogus) {
917 unittest(0, "kzalloc() failed\n");
918 kfree(map);
919 return;
920 }
921
922 dev_bogus->dma_range_map = map;
923 paddr = dma_to_phys(dev_bogus, expect_dma_addr);
924 dma_addr = phys_to_dma(dev_bogus, expect_paddr);
925
926 unittest(paddr == expect_paddr,
927 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
928 &paddr, expect_paddr, np);
929 unittest(dma_addr == expect_dma_addr,
930 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
931 &dma_addr, expect_dma_addr, np);
932
933 kfree(map);
934 kfree(dev_bogus);
935 }
936 of_node_put(np);
937 #endif
938 }
939
of_unittest_parse_dma_ranges(void)940 static void __init of_unittest_parse_dma_ranges(void)
941 {
942 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
943 0x0, 0x20000000);
944 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
945 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
946 0x100000000, 0x20000000);
947 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
948 0x80000000, 0x20000000);
949 }
950
of_unittest_pci_dma_ranges(void)951 static void __init of_unittest_pci_dma_ranges(void)
952 {
953 struct device_node *np;
954 struct of_pci_range range;
955 struct of_pci_range_parser parser;
956 int i = 0;
957
958 if (!IS_ENABLED(CONFIG_PCI))
959 return;
960
961 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
962 if (!np) {
963 pr_err("missing testcase data\n");
964 return;
965 }
966
967 if (of_pci_dma_range_parser_init(&parser, np)) {
968 pr_err("missing dma-ranges property\n");
969 return;
970 }
971
972 /*
973 * Get the dma-ranges from the device tree
974 */
975 for_each_of_pci_range(&parser, &range) {
976 if (!i) {
977 unittest(range.size == 0x10000000,
978 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
979 np, range.size);
980 unittest(range.cpu_addr == 0x20000000,
981 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
982 range.cpu_addr, np);
983 unittest(range.pci_addr == 0x80000000,
984 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
985 range.pci_addr, np);
986 } else {
987 unittest(range.size == 0x10000000,
988 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
989 np, range.size);
990 unittest(range.cpu_addr == 0x40000000,
991 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
992 range.cpu_addr, np);
993 unittest(range.pci_addr == 0xc0000000,
994 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
995 range.pci_addr, np);
996 }
997 i++;
998 }
999
1000 of_node_put(np);
1001 }
1002
of_unittest_parse_interrupts(void)1003 static void __init of_unittest_parse_interrupts(void)
1004 {
1005 struct device_node *np;
1006 struct of_phandle_args args;
1007 int i, rc;
1008
1009 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1010 return;
1011
1012 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1013 if (!np) {
1014 pr_err("missing testcase data\n");
1015 return;
1016 }
1017
1018 for (i = 0; i < 4; i++) {
1019 bool passed = true;
1020
1021 memset(&args, 0, sizeof(args));
1022 rc = of_irq_parse_one(np, i, &args);
1023
1024 passed &= !rc;
1025 passed &= (args.args_count == 1);
1026 passed &= (args.args[0] == (i + 1));
1027
1028 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1029 i, args.np, rc);
1030 }
1031 of_node_put(np);
1032
1033 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1034 if (!np) {
1035 pr_err("missing testcase data\n");
1036 return;
1037 }
1038
1039 for (i = 0; i < 4; i++) {
1040 bool passed = true;
1041
1042 memset(&args, 0, sizeof(args));
1043 rc = of_irq_parse_one(np, i, &args);
1044
1045 /* Test the values from tests-phandle.dtsi */
1046 switch (i) {
1047 case 0:
1048 passed &= !rc;
1049 passed &= (args.args_count == 1);
1050 passed &= (args.args[0] == 9);
1051 break;
1052 case 1:
1053 passed &= !rc;
1054 passed &= (args.args_count == 3);
1055 passed &= (args.args[0] == 10);
1056 passed &= (args.args[1] == 11);
1057 passed &= (args.args[2] == 12);
1058 break;
1059 case 2:
1060 passed &= !rc;
1061 passed &= (args.args_count == 2);
1062 passed &= (args.args[0] == 13);
1063 passed &= (args.args[1] == 14);
1064 break;
1065 case 3:
1066 passed &= !rc;
1067 passed &= (args.args_count == 2);
1068 passed &= (args.args[0] == 15);
1069 passed &= (args.args[1] == 16);
1070 break;
1071 default:
1072 passed = false;
1073 }
1074 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1075 i, args.np, rc);
1076 }
1077 of_node_put(np);
1078 }
1079
of_unittest_parse_interrupts_extended(void)1080 static void __init of_unittest_parse_interrupts_extended(void)
1081 {
1082 struct device_node *np;
1083 struct of_phandle_args args;
1084 int i, rc;
1085
1086 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1087 return;
1088
1089 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1090 if (!np) {
1091 pr_err("missing testcase data\n");
1092 return;
1093 }
1094
1095 for (i = 0; i < 7; i++) {
1096 bool passed = true;
1097
1098 memset(&args, 0, sizeof(args));
1099 rc = of_irq_parse_one(np, i, &args);
1100
1101 /* Test the values from tests-phandle.dtsi */
1102 switch (i) {
1103 case 0:
1104 passed &= !rc;
1105 passed &= (args.args_count == 1);
1106 passed &= (args.args[0] == 1);
1107 break;
1108 case 1:
1109 passed &= !rc;
1110 passed &= (args.args_count == 3);
1111 passed &= (args.args[0] == 2);
1112 passed &= (args.args[1] == 3);
1113 passed &= (args.args[2] == 4);
1114 break;
1115 case 2:
1116 passed &= !rc;
1117 passed &= (args.args_count == 2);
1118 passed &= (args.args[0] == 5);
1119 passed &= (args.args[1] == 6);
1120 break;
1121 case 3:
1122 passed &= !rc;
1123 passed &= (args.args_count == 1);
1124 passed &= (args.args[0] == 9);
1125 break;
1126 case 4:
1127 passed &= !rc;
1128 passed &= (args.args_count == 3);
1129 passed &= (args.args[0] == 10);
1130 passed &= (args.args[1] == 11);
1131 passed &= (args.args[2] == 12);
1132 break;
1133 case 5:
1134 passed &= !rc;
1135 passed &= (args.args_count == 2);
1136 passed &= (args.args[0] == 13);
1137 passed &= (args.args[1] == 14);
1138 break;
1139 case 6:
1140 passed &= !rc;
1141 passed &= (args.args_count == 1);
1142 passed &= (args.args[0] == 15);
1143 break;
1144 default:
1145 passed = false;
1146 }
1147
1148 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1149 i, args.np, rc);
1150 }
1151 of_node_put(np);
1152 }
1153
1154 static const struct of_device_id match_node_table[] = {
1155 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1156 { .data = "B", .type = "type1", }, /* followed by type alone */
1157
1158 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1159 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1160 { .data = "Cc", .name = "name2", .type = "type2", },
1161
1162 { .data = "E", .compatible = "compat3" },
1163 { .data = "G", .compatible = "compat2", },
1164 { .data = "H", .compatible = "compat2", .name = "name5", },
1165 { .data = "I", .compatible = "compat2", .type = "type1", },
1166 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1167 { .data = "K", .compatible = "compat2", .name = "name9", },
1168 {}
1169 };
1170
1171 static struct {
1172 const char *path;
1173 const char *data;
1174 } match_node_tests[] = {
1175 { .path = "/testcase-data/match-node/name0", .data = "A", },
1176 { .path = "/testcase-data/match-node/name1", .data = "B", },
1177 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1178 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1179 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1180 { .path = "/testcase-data/match-node/name3", .data = "E", },
1181 { .path = "/testcase-data/match-node/name4", .data = "G", },
1182 { .path = "/testcase-data/match-node/name5", .data = "H", },
1183 { .path = "/testcase-data/match-node/name6", .data = "G", },
1184 { .path = "/testcase-data/match-node/name7", .data = "I", },
1185 { .path = "/testcase-data/match-node/name8", .data = "J", },
1186 { .path = "/testcase-data/match-node/name9", .data = "K", },
1187 };
1188
of_unittest_match_node(void)1189 static void __init of_unittest_match_node(void)
1190 {
1191 struct device_node *np;
1192 const struct of_device_id *match;
1193 int i;
1194
1195 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1196 np = of_find_node_by_path(match_node_tests[i].path);
1197 if (!np) {
1198 unittest(0, "missing testcase node %s\n",
1199 match_node_tests[i].path);
1200 continue;
1201 }
1202
1203 match = of_match_node(match_node_table, np);
1204 if (!match) {
1205 unittest(0, "%s didn't match anything\n",
1206 match_node_tests[i].path);
1207 continue;
1208 }
1209
1210 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1211 unittest(0, "%s got wrong match. expected %s, got %s\n",
1212 match_node_tests[i].path, match_node_tests[i].data,
1213 (const char *)match->data);
1214 continue;
1215 }
1216 unittest(1, "passed");
1217 }
1218 }
1219
1220 static struct resource test_bus_res = {
1221 .start = 0xfffffff8,
1222 .end = 0xfffffff9,
1223 .flags = IORESOURCE_MEM,
1224 };
1225 static const struct platform_device_info test_bus_info = {
1226 .name = "unittest-bus",
1227 };
of_unittest_platform_populate(void)1228 static void __init of_unittest_platform_populate(void)
1229 {
1230 int irq, rc;
1231 struct device_node *np, *child, *grandchild;
1232 struct platform_device *pdev, *test_bus;
1233 const struct of_device_id match[] = {
1234 { .compatible = "test-device", },
1235 {}
1236 };
1237
1238 np = of_find_node_by_path("/testcase-data");
1239 of_platform_default_populate(np, NULL, NULL);
1240
1241 /* Test that a missing irq domain returns -EPROBE_DEFER */
1242 np = of_find_node_by_path("/testcase-data/testcase-device1");
1243 pdev = of_find_device_by_node(np);
1244 unittest(pdev, "device 1 creation failed\n");
1245
1246 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1247 irq = platform_get_irq(pdev, 0);
1248 unittest(irq == -EPROBE_DEFER,
1249 "device deferred probe failed - %d\n", irq);
1250
1251 /* Test that a parsing failure does not return -EPROBE_DEFER */
1252 np = of_find_node_by_path("/testcase-data/testcase-device2");
1253 pdev = of_find_device_by_node(np);
1254 unittest(pdev, "device 2 creation failed\n");
1255
1256 EXPECT_BEGIN(KERN_INFO,
1257 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1258
1259 irq = platform_get_irq(pdev, 0);
1260
1261 EXPECT_END(KERN_INFO,
1262 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1263
1264 unittest(irq < 0 && irq != -EPROBE_DEFER,
1265 "device parsing error failed - %d\n", irq);
1266 }
1267
1268 np = of_find_node_by_path("/testcase-data/platform-tests");
1269 unittest(np, "No testcase data in device tree\n");
1270 if (!np)
1271 return;
1272
1273 test_bus = platform_device_register_full(&test_bus_info);
1274 rc = PTR_ERR_OR_ZERO(test_bus);
1275 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1276 if (rc) {
1277 of_node_put(np);
1278 return;
1279 }
1280 test_bus->dev.of_node = np;
1281
1282 /*
1283 * Add a dummy resource to the test bus node after it is
1284 * registered to catch problems with un-inserted resources. The
1285 * DT code doesn't insert the resources, and it has caused the
1286 * kernel to oops in the past. This makes sure the same bug
1287 * doesn't crop up again.
1288 */
1289 platform_device_add_resources(test_bus, &test_bus_res, 1);
1290
1291 of_platform_populate(np, match, NULL, &test_bus->dev);
1292 for_each_child_of_node(np, child) {
1293 for_each_child_of_node(child, grandchild) {
1294 pdev = of_find_device_by_node(grandchild);
1295 unittest(pdev,
1296 "Could not create device for node '%pOFn'\n",
1297 grandchild);
1298 of_dev_put(pdev);
1299 }
1300 }
1301
1302 of_platform_depopulate(&test_bus->dev);
1303 for_each_child_of_node(np, child) {
1304 for_each_child_of_node(child, grandchild)
1305 unittest(!of_find_device_by_node(grandchild),
1306 "device didn't get destroyed '%pOFn'\n",
1307 grandchild);
1308 }
1309
1310 platform_device_unregister(test_bus);
1311 of_node_put(np);
1312 }
1313
1314 /**
1315 * update_node_properties - adds the properties
1316 * of np into dup node (present in live tree) and
1317 * updates parent of children of np to dup.
1318 *
1319 * @np: node whose properties are being added to the live tree
1320 * @dup: node present in live tree to be updated
1321 */
update_node_properties(struct device_node * np,struct device_node * dup)1322 static void update_node_properties(struct device_node *np,
1323 struct device_node *dup)
1324 {
1325 struct property *prop;
1326 struct property *save_next;
1327 struct device_node *child;
1328 int ret;
1329
1330 for_each_child_of_node(np, child)
1331 child->parent = dup;
1332
1333 /*
1334 * "unittest internal error: unable to add testdata property"
1335 *
1336 * If this message reports a property in node '/__symbols__' then
1337 * the respective unittest overlay contains a label that has the
1338 * same name as a label in the live devicetree. The label will
1339 * be in the live devicetree only if the devicetree source was
1340 * compiled with the '-@' option. If you encounter this error,
1341 * please consider renaming __all__ of the labels in the unittest
1342 * overlay dts files with an odd prefix that is unlikely to be
1343 * used in a real devicetree.
1344 */
1345
1346 /*
1347 * open code for_each_property_of_node() because of_add_property()
1348 * sets prop->next to NULL
1349 */
1350 for (prop = np->properties; prop != NULL; prop = save_next) {
1351 save_next = prop->next;
1352 ret = of_add_property(dup, prop);
1353 if (ret) {
1354 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1355 continue;
1356 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1357 np, prop->name);
1358 }
1359 }
1360 }
1361
1362 /**
1363 * attach_node_and_children - attaches nodes
1364 * and its children to live tree.
1365 * CAUTION: misleading function name - if node @np already exists in
1366 * the live tree then children of @np are *not* attached to the live
1367 * tree. This works for the current test devicetree nodes because such
1368 * nodes do not have child nodes.
1369 *
1370 * @np: Node to attach to live tree
1371 */
attach_node_and_children(struct device_node * np)1372 static void attach_node_and_children(struct device_node *np)
1373 {
1374 struct device_node *next, *dup, *child;
1375 unsigned long flags;
1376 const char *full_name;
1377
1378 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1379
1380 if (!strcmp(full_name, "/__local_fixups__") ||
1381 !strcmp(full_name, "/__fixups__")) {
1382 kfree(full_name);
1383 return;
1384 }
1385
1386 dup = of_find_node_by_path(full_name);
1387 kfree(full_name);
1388 if (dup) {
1389 update_node_properties(np, dup);
1390 return;
1391 }
1392
1393 child = np->child;
1394 np->child = NULL;
1395
1396 mutex_lock(&of_mutex);
1397 raw_spin_lock_irqsave(&devtree_lock, flags);
1398 np->sibling = np->parent->child;
1399 np->parent->child = np;
1400 of_node_clear_flag(np, OF_DETACHED);
1401 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1402
1403 __of_attach_node_sysfs(np);
1404 mutex_unlock(&of_mutex);
1405
1406 while (child) {
1407 next = child->sibling;
1408 attach_node_and_children(child);
1409 child = next;
1410 }
1411 }
1412
1413 /**
1414 * unittest_data_add - Reads, copies data from
1415 * linked tree and attaches it to the live tree
1416 */
unittest_data_add(void)1417 static int __init unittest_data_add(void)
1418 {
1419 void *unittest_data;
1420 struct device_node *unittest_data_node, *np;
1421 /*
1422 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1423 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1424 */
1425 extern uint8_t __dtb_testcases_begin[];
1426 extern uint8_t __dtb_testcases_end[];
1427 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1428 int rc;
1429
1430 if (!size) {
1431 pr_warn("%s: No testcase data to attach; not running tests\n",
1432 __func__);
1433 return -ENODATA;
1434 }
1435
1436 /* creating copy */
1437 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
1438 if (!unittest_data)
1439 return -ENOMEM;
1440
1441 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
1442 if (!unittest_data_node) {
1443 pr_warn("%s: No tree to attach; not running tests\n", __func__);
1444 kfree(unittest_data);
1445 return -ENODATA;
1446 }
1447
1448 /*
1449 * This lock normally encloses of_resolve_phandles()
1450 */
1451 of_overlay_mutex_lock();
1452
1453 rc = of_resolve_phandles(unittest_data_node);
1454 if (rc) {
1455 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1456 of_overlay_mutex_unlock();
1457 return -EINVAL;
1458 }
1459
1460 if (!of_root) {
1461 of_root = unittest_data_node;
1462 for_each_of_allnodes(np)
1463 __of_attach_node_sysfs(np);
1464 of_aliases = of_find_node_by_path("/aliases");
1465 of_chosen = of_find_node_by_path("/chosen");
1466 of_overlay_mutex_unlock();
1467 return 0;
1468 }
1469
1470 EXPECT_BEGIN(KERN_INFO,
1471 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1472
1473 /* attach the sub-tree to live tree */
1474 np = unittest_data_node->child;
1475 while (np) {
1476 struct device_node *next = np->sibling;
1477
1478 np->parent = of_root;
1479 attach_node_and_children(np);
1480 np = next;
1481 }
1482
1483 EXPECT_END(KERN_INFO,
1484 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1485
1486 of_overlay_mutex_unlock();
1487
1488 return 0;
1489 }
1490
1491 #ifdef CONFIG_OF_OVERLAY
1492 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1493
unittest_probe(struct platform_device * pdev)1494 static int unittest_probe(struct platform_device *pdev)
1495 {
1496 struct device *dev = &pdev->dev;
1497 struct device_node *np = dev->of_node;
1498
1499 if (np == NULL) {
1500 dev_err(dev, "No OF data for device\n");
1501 return -EINVAL;
1502
1503 }
1504
1505 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1506
1507 of_platform_populate(np, NULL, NULL, &pdev->dev);
1508
1509 return 0;
1510 }
1511
unittest_remove(struct platform_device * pdev)1512 static int unittest_remove(struct platform_device *pdev)
1513 {
1514 struct device *dev = &pdev->dev;
1515 struct device_node *np = dev->of_node;
1516
1517 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1518 return 0;
1519 }
1520
1521 static const struct of_device_id unittest_match[] = {
1522 { .compatible = "unittest", },
1523 {},
1524 };
1525
1526 static struct platform_driver unittest_driver = {
1527 .probe = unittest_probe,
1528 .remove = unittest_remove,
1529 .driver = {
1530 .name = "unittest",
1531 .of_match_table = of_match_ptr(unittest_match),
1532 },
1533 };
1534
1535 /* get the platform device instantiated at the path */
of_path_to_platform_device(const char * path)1536 static struct platform_device *of_path_to_platform_device(const char *path)
1537 {
1538 struct device_node *np;
1539 struct platform_device *pdev;
1540
1541 np = of_find_node_by_path(path);
1542 if (np == NULL)
1543 return NULL;
1544
1545 pdev = of_find_device_by_node(np);
1546 of_node_put(np);
1547
1548 return pdev;
1549 }
1550
1551 /* find out if a platform device exists at that path */
of_path_platform_device_exists(const char * path)1552 static int of_path_platform_device_exists(const char *path)
1553 {
1554 struct platform_device *pdev;
1555
1556 pdev = of_path_to_platform_device(path);
1557 platform_device_put(pdev);
1558 return pdev != NULL;
1559 }
1560
1561 #ifdef CONFIG_OF_GPIO
1562
1563 struct unittest_gpio_dev {
1564 struct gpio_chip chip;
1565 };
1566
1567 static int unittest_gpio_chip_request_count;
1568 static int unittest_gpio_probe_count;
1569 static int unittest_gpio_probe_pass_count;
1570
unittest_gpio_chip_request(struct gpio_chip * chip,unsigned int offset)1571 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1572 {
1573 unittest_gpio_chip_request_count++;
1574
1575 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1576 unittest_gpio_chip_request_count);
1577 return 0;
1578 }
1579
unittest_gpio_probe(struct platform_device * pdev)1580 static int unittest_gpio_probe(struct platform_device *pdev)
1581 {
1582 struct unittest_gpio_dev *devptr;
1583 int ret;
1584
1585 unittest_gpio_probe_count++;
1586
1587 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1588 if (!devptr)
1589 return -ENOMEM;
1590
1591 platform_set_drvdata(pdev, devptr);
1592
1593 devptr->chip.of_node = pdev->dev.of_node;
1594 devptr->chip.label = "of-unittest-gpio";
1595 devptr->chip.base = -1; /* dynamic allocation */
1596 devptr->chip.ngpio = 5;
1597 devptr->chip.request = unittest_gpio_chip_request;
1598
1599 ret = gpiochip_add_data(&devptr->chip, NULL);
1600
1601 unittest(!ret,
1602 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1603
1604 if (!ret)
1605 unittest_gpio_probe_pass_count++;
1606 return ret;
1607 }
1608
unittest_gpio_remove(struct platform_device * pdev)1609 static int unittest_gpio_remove(struct platform_device *pdev)
1610 {
1611 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1612 struct device *dev = &pdev->dev;
1613 struct device_node *np = pdev->dev.of_node;
1614
1615 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1616
1617 if (!gdev)
1618 return -EINVAL;
1619
1620 if (gdev->chip.base != -1)
1621 gpiochip_remove(&gdev->chip);
1622
1623 platform_set_drvdata(pdev, NULL);
1624 kfree(gdev);
1625
1626 return 0;
1627 }
1628
1629 static const struct of_device_id unittest_gpio_id[] = {
1630 { .compatible = "unittest-gpio", },
1631 {}
1632 };
1633
1634 static struct platform_driver unittest_gpio_driver = {
1635 .probe = unittest_gpio_probe,
1636 .remove = unittest_gpio_remove,
1637 .driver = {
1638 .name = "unittest-gpio",
1639 .of_match_table = of_match_ptr(unittest_gpio_id),
1640 },
1641 };
1642
of_unittest_overlay_gpio(void)1643 static void __init of_unittest_overlay_gpio(void)
1644 {
1645 int chip_request_count;
1646 int probe_pass_count;
1647 int ret;
1648
1649 /*
1650 * tests: apply overlays before registering driver
1651 * Similar to installing a driver as a module, the
1652 * driver is registered after applying the overlays.
1653 *
1654 * The overlays are applied by overlay_data_apply()
1655 * instead of of_unittest_apply_overlay() so that they
1656 * will not be tracked. Thus they will not be removed
1657 * by of_unittest_destroy_tracked_overlays().
1658 *
1659 * - apply overlay_gpio_01
1660 * - apply overlay_gpio_02a
1661 * - apply overlay_gpio_02b
1662 * - register driver
1663 *
1664 * register driver will result in
1665 * - probe and processing gpio hog for overlay_gpio_01
1666 * - probe for overlay_gpio_02a
1667 * - processing gpio for overlay_gpio_02b
1668 */
1669
1670 probe_pass_count = unittest_gpio_probe_pass_count;
1671 chip_request_count = unittest_gpio_chip_request_count;
1672
1673 /*
1674 * overlay_gpio_01 contains gpio node and child gpio hog node
1675 * overlay_gpio_02a contains gpio node
1676 * overlay_gpio_02b contains child gpio hog node
1677 */
1678
1679 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1680 "Adding overlay 'overlay_gpio_01' failed\n");
1681
1682 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1683 "Adding overlay 'overlay_gpio_02a' failed\n");
1684
1685 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1686 "Adding overlay 'overlay_gpio_02b' failed\n");
1687
1688 /*
1689 * messages are the result of the probes, after the
1690 * driver is registered
1691 */
1692
1693 EXPECT_BEGIN(KERN_INFO,
1694 "gpio-<<int>> (line-B-input): hogged as input\n");
1695
1696 EXPECT_BEGIN(KERN_INFO,
1697 "gpio-<<int>> (line-A-input): hogged as input\n");
1698
1699 ret = platform_driver_register(&unittest_gpio_driver);
1700 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1701 return;
1702
1703 EXPECT_END(KERN_INFO,
1704 "gpio-<<int>> (line-A-input): hogged as input\n");
1705 EXPECT_END(KERN_INFO,
1706 "gpio-<<int>> (line-B-input): hogged as input\n");
1707
1708 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1709 "unittest_gpio_probe() failed or not called\n");
1710
1711 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1712 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1713 unittest_gpio_chip_request_count - chip_request_count);
1714
1715 /*
1716 * tests: apply overlays after registering driver
1717 *
1718 * Similar to a driver built-in to the kernel, the
1719 * driver is registered before applying the overlays.
1720 *
1721 * overlay_gpio_03 contains gpio node and child gpio hog node
1722 *
1723 * - apply overlay_gpio_03
1724 *
1725 * apply overlay will result in
1726 * - probe and processing gpio hog.
1727 */
1728
1729 probe_pass_count = unittest_gpio_probe_pass_count;
1730 chip_request_count = unittest_gpio_chip_request_count;
1731
1732 EXPECT_BEGIN(KERN_INFO,
1733 "gpio-<<int>> (line-D-input): hogged as input\n");
1734
1735 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1736
1737 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1738 "Adding overlay 'overlay_gpio_03' failed\n");
1739
1740 EXPECT_END(KERN_INFO,
1741 "gpio-<<int>> (line-D-input): hogged as input\n");
1742
1743 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1744 "unittest_gpio_probe() failed or not called\n");
1745
1746 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1747 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1748 unittest_gpio_chip_request_count - chip_request_count);
1749
1750 /*
1751 * overlay_gpio_04a contains gpio node
1752 *
1753 * - apply overlay_gpio_04a
1754 *
1755 * apply the overlay will result in
1756 * - probe for overlay_gpio_04a
1757 */
1758
1759 probe_pass_count = unittest_gpio_probe_pass_count;
1760 chip_request_count = unittest_gpio_chip_request_count;
1761
1762 /* overlay_gpio_04a contains gpio node */
1763
1764 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1765 "Adding overlay 'overlay_gpio_04a' failed\n");
1766
1767 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1768 "unittest_gpio_probe() failed or not called\n");
1769
1770 /*
1771 * overlay_gpio_04b contains child gpio hog node
1772 *
1773 * - apply overlay_gpio_04b
1774 *
1775 * apply the overlay will result in
1776 * - processing gpio for overlay_gpio_04b
1777 */
1778
1779 EXPECT_BEGIN(KERN_INFO,
1780 "gpio-<<int>> (line-C-input): hogged as input\n");
1781
1782 /* overlay_gpio_04b contains child gpio hog node */
1783
1784 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1785 "Adding overlay 'overlay_gpio_04b' failed\n");
1786
1787 EXPECT_END(KERN_INFO,
1788 "gpio-<<int>> (line-C-input): hogged as input\n");
1789
1790 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1791 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1792 unittest_gpio_chip_request_count - chip_request_count);
1793 }
1794
1795 #else
1796
of_unittest_overlay_gpio(void)1797 static void __init of_unittest_overlay_gpio(void)
1798 {
1799 /* skip tests */
1800 }
1801
1802 #endif
1803
1804 #if IS_BUILTIN(CONFIG_I2C)
1805
1806 /* get the i2c client device instantiated at the path */
of_path_to_i2c_client(const char * path)1807 static struct i2c_client *of_path_to_i2c_client(const char *path)
1808 {
1809 struct device_node *np;
1810 struct i2c_client *client;
1811
1812 np = of_find_node_by_path(path);
1813 if (np == NULL)
1814 return NULL;
1815
1816 client = of_find_i2c_device_by_node(np);
1817 of_node_put(np);
1818
1819 return client;
1820 }
1821
1822 /* find out if a i2c client device exists at that path */
of_path_i2c_client_exists(const char * path)1823 static int of_path_i2c_client_exists(const char *path)
1824 {
1825 struct i2c_client *client;
1826
1827 client = of_path_to_i2c_client(path);
1828 if (client)
1829 put_device(&client->dev);
1830 return client != NULL;
1831 }
1832 #else
of_path_i2c_client_exists(const char * path)1833 static int of_path_i2c_client_exists(const char *path)
1834 {
1835 return 0;
1836 }
1837 #endif
1838
1839 enum overlay_type {
1840 PDEV_OVERLAY,
1841 I2C_OVERLAY
1842 };
1843
of_path_device_type_exists(const char * path,enum overlay_type ovtype)1844 static int of_path_device_type_exists(const char *path,
1845 enum overlay_type ovtype)
1846 {
1847 switch (ovtype) {
1848 case PDEV_OVERLAY:
1849 return of_path_platform_device_exists(path);
1850 case I2C_OVERLAY:
1851 return of_path_i2c_client_exists(path);
1852 }
1853 return 0;
1854 }
1855
unittest_path(int nr,enum overlay_type ovtype)1856 static const char *unittest_path(int nr, enum overlay_type ovtype)
1857 {
1858 const char *base;
1859 static char buf[256];
1860
1861 switch (ovtype) {
1862 case PDEV_OVERLAY:
1863 base = "/testcase-data/overlay-node/test-bus";
1864 break;
1865 case I2C_OVERLAY:
1866 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1867 break;
1868 default:
1869 buf[0] = '\0';
1870 return buf;
1871 }
1872 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1873 buf[sizeof(buf) - 1] = '\0';
1874 return buf;
1875 }
1876
of_unittest_device_exists(int unittest_nr,enum overlay_type ovtype)1877 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1878 {
1879 const char *path;
1880
1881 path = unittest_path(unittest_nr, ovtype);
1882
1883 switch (ovtype) {
1884 case PDEV_OVERLAY:
1885 return of_path_platform_device_exists(path);
1886 case I2C_OVERLAY:
1887 return of_path_i2c_client_exists(path);
1888 }
1889 return 0;
1890 }
1891
overlay_name_from_nr(int nr)1892 static const char *overlay_name_from_nr(int nr)
1893 {
1894 static char buf[256];
1895
1896 snprintf(buf, sizeof(buf) - 1,
1897 "overlay_%d", nr);
1898 buf[sizeof(buf) - 1] = '\0';
1899
1900 return buf;
1901 }
1902
1903 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1904
1905 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1906
1907 #define MAX_UNITTEST_OVERLAYS 256
1908 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1909 static int overlay_first_id = -1;
1910
of_unittest_overlay_tracked(int id)1911 static long of_unittest_overlay_tracked(int id)
1912 {
1913 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1914 return 0;
1915 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1916 }
1917
of_unittest_track_overlay(int id)1918 static void of_unittest_track_overlay(int id)
1919 {
1920 if (overlay_first_id < 0)
1921 overlay_first_id = id;
1922 id -= overlay_first_id;
1923
1924 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1925 return;
1926 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1927 }
1928
of_unittest_untrack_overlay(int id)1929 static void of_unittest_untrack_overlay(int id)
1930 {
1931 if (overlay_first_id < 0)
1932 return;
1933 id -= overlay_first_id;
1934 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1935 return;
1936 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1937 }
1938
of_unittest_destroy_tracked_overlays(void)1939 static void of_unittest_destroy_tracked_overlays(void)
1940 {
1941 int id, ret, defers, ovcs_id;
1942
1943 if (overlay_first_id < 0)
1944 return;
1945
1946 /* try until no defers */
1947 do {
1948 defers = 0;
1949 /* remove in reverse order */
1950 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1951 if (!of_unittest_overlay_tracked(id))
1952 continue;
1953
1954 ovcs_id = id + overlay_first_id;
1955 ret = of_overlay_remove(&ovcs_id);
1956 if (ret == -ENODEV) {
1957 pr_warn("%s: no overlay to destroy for #%d\n",
1958 __func__, id + overlay_first_id);
1959 continue;
1960 }
1961 if (ret != 0) {
1962 defers++;
1963 pr_warn("%s: overlay destroy failed for #%d\n",
1964 __func__, id + overlay_first_id);
1965 continue;
1966 }
1967
1968 of_unittest_untrack_overlay(id);
1969 }
1970 } while (defers > 0);
1971 }
1972
of_unittest_apply_overlay(int overlay_nr,int * overlay_id)1973 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1974 {
1975 const char *overlay_name;
1976
1977 overlay_name = overlay_name_from_nr(overlay_nr);
1978
1979 if (!overlay_data_apply(overlay_name, overlay_id)) {
1980 unittest(0, "could not apply overlay \"%s\"\n",
1981 overlay_name);
1982 return -EFAULT;
1983 }
1984 of_unittest_track_overlay(*overlay_id);
1985
1986 return 0;
1987 }
1988
1989 /* apply an overlay while checking before and after states */
of_unittest_apply_overlay_check(int overlay_nr,int unittest_nr,int before,int after,enum overlay_type ovtype)1990 static int __init of_unittest_apply_overlay_check(int overlay_nr,
1991 int unittest_nr, int before, int after,
1992 enum overlay_type ovtype)
1993 {
1994 int ret, ovcs_id;
1995
1996 /* unittest device must not be in before state */
1997 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1998 unittest(0, "%s with device @\"%s\" %s\n",
1999 overlay_name_from_nr(overlay_nr),
2000 unittest_path(unittest_nr, ovtype),
2001 !before ? "enabled" : "disabled");
2002 return -EINVAL;
2003 }
2004
2005 ovcs_id = 0;
2006 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2007 if (ret != 0) {
2008 /* of_unittest_apply_overlay already called unittest() */
2009 return ret;
2010 }
2011
2012 /* unittest device must be to set to after state */
2013 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2014 unittest(0, "%s failed to create @\"%s\" %s\n",
2015 overlay_name_from_nr(overlay_nr),
2016 unittest_path(unittest_nr, ovtype),
2017 !after ? "enabled" : "disabled");
2018 return -EINVAL;
2019 }
2020
2021 return 0;
2022 }
2023
2024 /* apply an overlay and then revert it while checking before, after states */
of_unittest_apply_revert_overlay_check(int overlay_nr,int unittest_nr,int before,int after,enum overlay_type ovtype)2025 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2026 int unittest_nr, int before, int after,
2027 enum overlay_type ovtype)
2028 {
2029 int ret, ovcs_id, save_id;
2030
2031 /* unittest device must be in before state */
2032 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2033 unittest(0, "%s with device @\"%s\" %s\n",
2034 overlay_name_from_nr(overlay_nr),
2035 unittest_path(unittest_nr, ovtype),
2036 !before ? "enabled" : "disabled");
2037 return -EINVAL;
2038 }
2039
2040 /* apply the overlay */
2041 ovcs_id = 0;
2042 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2043 if (ret != 0) {
2044 /* of_unittest_apply_overlay already called unittest() */
2045 return ret;
2046 }
2047
2048 /* unittest device must be in after state */
2049 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2050 unittest(0, "%s failed to create @\"%s\" %s\n",
2051 overlay_name_from_nr(overlay_nr),
2052 unittest_path(unittest_nr, ovtype),
2053 !after ? "enabled" : "disabled");
2054 return -EINVAL;
2055 }
2056
2057 save_id = ovcs_id;
2058 ret = of_overlay_remove(&ovcs_id);
2059 if (ret != 0) {
2060 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2061 overlay_name_from_nr(overlay_nr),
2062 unittest_path(unittest_nr, ovtype));
2063 return ret;
2064 }
2065 of_unittest_untrack_overlay(save_id);
2066
2067 /* unittest device must be again in before state */
2068 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2069 unittest(0, "%s with device @\"%s\" %s\n",
2070 overlay_name_from_nr(overlay_nr),
2071 unittest_path(unittest_nr, ovtype),
2072 !before ? "enabled" : "disabled");
2073 return -EINVAL;
2074 }
2075
2076 return 0;
2077 }
2078
2079 /* test activation of device */
of_unittest_overlay_0(void)2080 static void __init of_unittest_overlay_0(void)
2081 {
2082 int ret;
2083
2084 EXPECT_BEGIN(KERN_INFO,
2085 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2086
2087 /* device should enable */
2088 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2089
2090 EXPECT_END(KERN_INFO,
2091 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2092
2093 if (ret)
2094 return;
2095
2096 unittest(1, "overlay test %d passed\n", 0);
2097 }
2098
2099 /* test deactivation of device */
of_unittest_overlay_1(void)2100 static void __init of_unittest_overlay_1(void)
2101 {
2102 int ret;
2103
2104 EXPECT_BEGIN(KERN_INFO,
2105 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2106
2107 /* device should disable */
2108 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2109
2110 EXPECT_END(KERN_INFO,
2111 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2112
2113 if (ret)
2114 return;
2115
2116 unittest(1, "overlay test %d passed\n", 1);
2117
2118 }
2119
2120 /* test activation of device */
of_unittest_overlay_2(void)2121 static void __init of_unittest_overlay_2(void)
2122 {
2123 int ret;
2124
2125 EXPECT_BEGIN(KERN_INFO,
2126 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2127
2128 /* device should enable */
2129 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2130
2131 EXPECT_END(KERN_INFO,
2132 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2133
2134 if (ret)
2135 return;
2136 unittest(1, "overlay test %d passed\n", 2);
2137 }
2138
2139 /* test deactivation of device */
of_unittest_overlay_3(void)2140 static void __init of_unittest_overlay_3(void)
2141 {
2142 int ret;
2143
2144 EXPECT_BEGIN(KERN_INFO,
2145 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2146
2147 /* device should disable */
2148 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2149
2150 EXPECT_END(KERN_INFO,
2151 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2152
2153 if (ret)
2154 return;
2155
2156 unittest(1, "overlay test %d passed\n", 3);
2157 }
2158
2159 /* test activation of a full device node */
of_unittest_overlay_4(void)2160 static void __init of_unittest_overlay_4(void)
2161 {
2162 /* device should disable */
2163 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2164 return;
2165
2166 unittest(1, "overlay test %d passed\n", 4);
2167 }
2168
2169 /* test overlay apply/revert sequence */
of_unittest_overlay_5(void)2170 static void __init of_unittest_overlay_5(void)
2171 {
2172 int ret;
2173
2174 EXPECT_BEGIN(KERN_INFO,
2175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2176
2177 /* device should disable */
2178 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2179
2180 EXPECT_END(KERN_INFO,
2181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2182
2183 if (ret)
2184 return;
2185
2186 unittest(1, "overlay test %d passed\n", 5);
2187 }
2188
2189 /* test overlay application in sequence */
of_unittest_overlay_6(void)2190 static void __init of_unittest_overlay_6(void)
2191 {
2192 int i, ov_id[2], ovcs_id;
2193 int overlay_nr = 6, unittest_nr = 6;
2194 int before = 0, after = 1;
2195 const char *overlay_name;
2196
2197 int ret;
2198
2199 /* unittest device must be in before state */
2200 for (i = 0; i < 2; i++) {
2201 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2202 != before) {
2203 unittest(0, "%s with device @\"%s\" %s\n",
2204 overlay_name_from_nr(overlay_nr + i),
2205 unittest_path(unittest_nr + i,
2206 PDEV_OVERLAY),
2207 !before ? "enabled" : "disabled");
2208 return;
2209 }
2210 }
2211
2212 /* apply the overlays */
2213
2214 EXPECT_BEGIN(KERN_INFO,
2215 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2216
2217 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2218
2219 ret = overlay_data_apply(overlay_name, &ovcs_id);
2220
2221 if (!ret) {
2222 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2223 return;
2224 }
2225 ov_id[0] = ovcs_id;
2226 of_unittest_track_overlay(ov_id[0]);
2227
2228 EXPECT_END(KERN_INFO,
2229 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2230
2231 EXPECT_BEGIN(KERN_INFO,
2232 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2233
2234 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2235
2236 ret = overlay_data_apply(overlay_name, &ovcs_id);
2237
2238 if (!ret) {
2239 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2240 return;
2241 }
2242 ov_id[1] = ovcs_id;
2243 of_unittest_track_overlay(ov_id[1]);
2244
2245 EXPECT_END(KERN_INFO,
2246 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2247
2248
2249 for (i = 0; i < 2; i++) {
2250 /* unittest device must be in after state */
2251 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2252 != after) {
2253 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2254 overlay_name_from_nr(overlay_nr + i),
2255 unittest_path(unittest_nr + i,
2256 PDEV_OVERLAY),
2257 !after ? "enabled" : "disabled");
2258 return;
2259 }
2260 }
2261
2262 for (i = 1; i >= 0; i--) {
2263 ovcs_id = ov_id[i];
2264 if (of_overlay_remove(&ovcs_id)) {
2265 unittest(0, "%s failed destroy @\"%s\"\n",
2266 overlay_name_from_nr(overlay_nr + i),
2267 unittest_path(unittest_nr + i,
2268 PDEV_OVERLAY));
2269 return;
2270 }
2271 of_unittest_untrack_overlay(ov_id[i]);
2272 }
2273
2274 for (i = 0; i < 2; i++) {
2275 /* unittest device must be again in before state */
2276 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2277 != before) {
2278 unittest(0, "%s with device @\"%s\" %s\n",
2279 overlay_name_from_nr(overlay_nr + i),
2280 unittest_path(unittest_nr + i,
2281 PDEV_OVERLAY),
2282 !before ? "enabled" : "disabled");
2283 return;
2284 }
2285 }
2286
2287 unittest(1, "overlay test %d passed\n", 6);
2288
2289 }
2290
2291 /* test overlay application in sequence */
of_unittest_overlay_8(void)2292 static void __init of_unittest_overlay_8(void)
2293 {
2294 int i, ov_id[2], ovcs_id;
2295 int overlay_nr = 8, unittest_nr = 8;
2296 const char *overlay_name;
2297 int ret;
2298
2299 /* we don't care about device state in this test */
2300
2301 EXPECT_BEGIN(KERN_INFO,
2302 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2303
2304 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2305
2306 ret = overlay_data_apply(overlay_name, &ovcs_id);
2307 if (!ret)
2308 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2309
2310 EXPECT_END(KERN_INFO,
2311 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2312
2313 if (!ret)
2314 return;
2315
2316 ov_id[0] = ovcs_id;
2317 of_unittest_track_overlay(ov_id[0]);
2318
2319 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2320
2321 EXPECT_BEGIN(KERN_INFO,
2322 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2323
2324 /* apply the overlays */
2325 ret = overlay_data_apply(overlay_name, &ovcs_id);
2326
2327 EXPECT_END(KERN_INFO,
2328 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2329
2330 if (!ret) {
2331 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2332 return;
2333 }
2334
2335 ov_id[1] = ovcs_id;
2336 of_unittest_track_overlay(ov_id[1]);
2337
2338 /* now try to remove first overlay (it should fail) */
2339 ovcs_id = ov_id[0];
2340
2341 EXPECT_BEGIN(KERN_INFO,
2342 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2343
2344 EXPECT_BEGIN(KERN_INFO,
2345 "OF: overlay: overlay #6 is not topmost");
2346
2347 ret = of_overlay_remove(&ovcs_id);
2348
2349 EXPECT_END(KERN_INFO,
2350 "OF: overlay: overlay #6 is not topmost");
2351
2352 EXPECT_END(KERN_INFO,
2353 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2354
2355 if (!ret) {
2356 unittest(0, "%s was destroyed @\"%s\"\n",
2357 overlay_name_from_nr(overlay_nr + 0),
2358 unittest_path(unittest_nr,
2359 PDEV_OVERLAY));
2360 return;
2361 }
2362
2363 /* removing them in order should work */
2364 for (i = 1; i >= 0; i--) {
2365 ovcs_id = ov_id[i];
2366 if (of_overlay_remove(&ovcs_id)) {
2367 unittest(0, "%s not destroyed @\"%s\"\n",
2368 overlay_name_from_nr(overlay_nr + i),
2369 unittest_path(unittest_nr,
2370 PDEV_OVERLAY));
2371 return;
2372 }
2373 of_unittest_untrack_overlay(ov_id[i]);
2374 }
2375
2376 unittest(1, "overlay test %d passed\n", 8);
2377 }
2378
2379 /* test insertion of a bus with parent devices */
of_unittest_overlay_10(void)2380 static void __init of_unittest_overlay_10(void)
2381 {
2382 int ret;
2383 char *child_path;
2384
2385 /* device should disable */
2386 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2387
2388 if (unittest(ret == 0,
2389 "overlay test %d failed; overlay application\n", 10))
2390 return;
2391
2392 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2393 unittest_path(10, PDEV_OVERLAY));
2394 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2395 return;
2396
2397 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2398 kfree(child_path);
2399
2400 unittest(ret, "overlay test %d failed; no child device\n", 10);
2401 }
2402
2403 /* test insertion of a bus with parent devices (and revert) */
of_unittest_overlay_11(void)2404 static void __init of_unittest_overlay_11(void)
2405 {
2406 int ret;
2407
2408 /* device should disable */
2409 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2410 PDEV_OVERLAY);
2411
2412 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2413 }
2414
2415 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2416
2417 struct unittest_i2c_bus_data {
2418 struct platform_device *pdev;
2419 struct i2c_adapter adap;
2420 };
2421
unittest_i2c_master_xfer(struct i2c_adapter * adap,struct i2c_msg * msgs,int num)2422 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2423 struct i2c_msg *msgs, int num)
2424 {
2425 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2426
2427 (void)std;
2428
2429 return num;
2430 }
2431
unittest_i2c_functionality(struct i2c_adapter * adap)2432 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2433 {
2434 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2435 }
2436
2437 static const struct i2c_algorithm unittest_i2c_algo = {
2438 .master_xfer = unittest_i2c_master_xfer,
2439 .functionality = unittest_i2c_functionality,
2440 };
2441
unittest_i2c_bus_probe(struct platform_device * pdev)2442 static int unittest_i2c_bus_probe(struct platform_device *pdev)
2443 {
2444 struct device *dev = &pdev->dev;
2445 struct device_node *np = dev->of_node;
2446 struct unittest_i2c_bus_data *std;
2447 struct i2c_adapter *adap;
2448 int ret;
2449
2450 if (np == NULL) {
2451 dev_err(dev, "No OF data for device\n");
2452 return -EINVAL;
2453
2454 }
2455
2456 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2457
2458 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2459 if (!std)
2460 return -ENOMEM;
2461
2462 /* link them together */
2463 std->pdev = pdev;
2464 platform_set_drvdata(pdev, std);
2465
2466 adap = &std->adap;
2467 i2c_set_adapdata(adap, std);
2468 adap->nr = -1;
2469 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2470 adap->class = I2C_CLASS_DEPRECATED;
2471 adap->algo = &unittest_i2c_algo;
2472 adap->dev.parent = dev;
2473 adap->dev.of_node = dev->of_node;
2474 adap->timeout = 5 * HZ;
2475 adap->retries = 3;
2476
2477 ret = i2c_add_numbered_adapter(adap);
2478 if (ret != 0) {
2479 dev_err(dev, "Failed to add I2C adapter\n");
2480 return ret;
2481 }
2482
2483 return 0;
2484 }
2485
unittest_i2c_bus_remove(struct platform_device * pdev)2486 static int unittest_i2c_bus_remove(struct platform_device *pdev)
2487 {
2488 struct device *dev = &pdev->dev;
2489 struct device_node *np = dev->of_node;
2490 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2491
2492 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2493 i2c_del_adapter(&std->adap);
2494
2495 return 0;
2496 }
2497
2498 static const struct of_device_id unittest_i2c_bus_match[] = {
2499 { .compatible = "unittest-i2c-bus", },
2500 {},
2501 };
2502
2503 static struct platform_driver unittest_i2c_bus_driver = {
2504 .probe = unittest_i2c_bus_probe,
2505 .remove = unittest_i2c_bus_remove,
2506 .driver = {
2507 .name = "unittest-i2c-bus",
2508 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2509 },
2510 };
2511
unittest_i2c_dev_probe(struct i2c_client * client,const struct i2c_device_id * id)2512 static int unittest_i2c_dev_probe(struct i2c_client *client,
2513 const struct i2c_device_id *id)
2514 {
2515 struct device *dev = &client->dev;
2516 struct device_node *np = client->dev.of_node;
2517
2518 if (!np) {
2519 dev_err(dev, "No OF node\n");
2520 return -EINVAL;
2521 }
2522
2523 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2524
2525 return 0;
2526 };
2527
unittest_i2c_dev_remove(struct i2c_client * client)2528 static int unittest_i2c_dev_remove(struct i2c_client *client)
2529 {
2530 struct device *dev = &client->dev;
2531 struct device_node *np = client->dev.of_node;
2532
2533 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2534 return 0;
2535 }
2536
2537 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2538 { .name = "unittest-i2c-dev" },
2539 { }
2540 };
2541
2542 static struct i2c_driver unittest_i2c_dev_driver = {
2543 .driver = {
2544 .name = "unittest-i2c-dev",
2545 },
2546 .probe = unittest_i2c_dev_probe,
2547 .remove = unittest_i2c_dev_remove,
2548 .id_table = unittest_i2c_dev_id,
2549 };
2550
2551 #if IS_BUILTIN(CONFIG_I2C_MUX)
2552
unittest_i2c_mux_select_chan(struct i2c_mux_core * muxc,u32 chan)2553 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2554 {
2555 return 0;
2556 }
2557
unittest_i2c_mux_probe(struct i2c_client * client,const struct i2c_device_id * id)2558 static int unittest_i2c_mux_probe(struct i2c_client *client,
2559 const struct i2c_device_id *id)
2560 {
2561 int i, nchans;
2562 struct device *dev = &client->dev;
2563 struct i2c_adapter *adap = client->adapter;
2564 struct device_node *np = client->dev.of_node, *child;
2565 struct i2c_mux_core *muxc;
2566 u32 reg, max_reg;
2567
2568 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2569
2570 if (!np) {
2571 dev_err(dev, "No OF node\n");
2572 return -EINVAL;
2573 }
2574
2575 max_reg = (u32)-1;
2576 for_each_child_of_node(np, child) {
2577 if (of_property_read_u32(child, "reg", ®))
2578 continue;
2579 if (max_reg == (u32)-1 || reg > max_reg)
2580 max_reg = reg;
2581 }
2582 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2583 if (nchans == 0) {
2584 dev_err(dev, "No channels\n");
2585 return -EINVAL;
2586 }
2587
2588 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2589 unittest_i2c_mux_select_chan, NULL);
2590 if (!muxc)
2591 return -ENOMEM;
2592 for (i = 0; i < nchans; i++) {
2593 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2594 dev_err(dev, "Failed to register mux #%d\n", i);
2595 i2c_mux_del_adapters(muxc);
2596 return -ENODEV;
2597 }
2598 }
2599
2600 i2c_set_clientdata(client, muxc);
2601
2602 return 0;
2603 };
2604
unittest_i2c_mux_remove(struct i2c_client * client)2605 static int unittest_i2c_mux_remove(struct i2c_client *client)
2606 {
2607 struct device *dev = &client->dev;
2608 struct device_node *np = client->dev.of_node;
2609 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2610
2611 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2612 i2c_mux_del_adapters(muxc);
2613 return 0;
2614 }
2615
2616 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2617 { .name = "unittest-i2c-mux" },
2618 { }
2619 };
2620
2621 static struct i2c_driver unittest_i2c_mux_driver = {
2622 .driver = {
2623 .name = "unittest-i2c-mux",
2624 },
2625 .probe = unittest_i2c_mux_probe,
2626 .remove = unittest_i2c_mux_remove,
2627 .id_table = unittest_i2c_mux_id,
2628 };
2629
2630 #endif
2631
of_unittest_overlay_i2c_init(void)2632 static int of_unittest_overlay_i2c_init(void)
2633 {
2634 int ret;
2635
2636 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2637 if (unittest(ret == 0,
2638 "could not register unittest i2c device driver\n"))
2639 return ret;
2640
2641 ret = platform_driver_register(&unittest_i2c_bus_driver);
2642
2643 if (unittest(ret == 0,
2644 "could not register unittest i2c bus driver\n"))
2645 return ret;
2646
2647 #if IS_BUILTIN(CONFIG_I2C_MUX)
2648
2649 EXPECT_BEGIN(KERN_INFO,
2650 "i2c i2c-1: Added multiplexed i2c bus 2");
2651
2652 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2653
2654 EXPECT_END(KERN_INFO,
2655 "i2c i2c-1: Added multiplexed i2c bus 2");
2656
2657 if (unittest(ret == 0,
2658 "could not register unittest i2c mux driver\n"))
2659 return ret;
2660 #endif
2661
2662 return 0;
2663 }
2664
of_unittest_overlay_i2c_cleanup(void)2665 static void of_unittest_overlay_i2c_cleanup(void)
2666 {
2667 #if IS_BUILTIN(CONFIG_I2C_MUX)
2668 i2c_del_driver(&unittest_i2c_mux_driver);
2669 #endif
2670 platform_driver_unregister(&unittest_i2c_bus_driver);
2671 i2c_del_driver(&unittest_i2c_dev_driver);
2672 }
2673
of_unittest_overlay_i2c_12(void)2674 static void __init of_unittest_overlay_i2c_12(void)
2675 {
2676 int ret;
2677
2678 /* device should enable */
2679 EXPECT_BEGIN(KERN_INFO,
2680 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2681
2682 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2683
2684 EXPECT_END(KERN_INFO,
2685 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2686
2687 if (ret)
2688 return;
2689
2690 unittest(1, "overlay test %d passed\n", 12);
2691 }
2692
2693 /* test deactivation of device */
of_unittest_overlay_i2c_13(void)2694 static void __init of_unittest_overlay_i2c_13(void)
2695 {
2696 int ret;
2697
2698 EXPECT_BEGIN(KERN_INFO,
2699 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2700
2701 /* device should disable */
2702 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2703
2704 EXPECT_END(KERN_INFO,
2705 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2706
2707 if (ret)
2708 return;
2709
2710 unittest(1, "overlay test %d passed\n", 13);
2711 }
2712
2713 /* just check for i2c mux existence */
of_unittest_overlay_i2c_14(void)2714 static void of_unittest_overlay_i2c_14(void)
2715 {
2716 }
2717
of_unittest_overlay_i2c_15(void)2718 static void __init of_unittest_overlay_i2c_15(void)
2719 {
2720 int ret;
2721
2722 /* device should enable */
2723 EXPECT_BEGIN(KERN_INFO,
2724 "i2c i2c-1: Added multiplexed i2c bus 3");
2725
2726 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2727
2728 EXPECT_END(KERN_INFO,
2729 "i2c i2c-1: Added multiplexed i2c bus 3");
2730
2731 if (ret)
2732 return;
2733
2734 unittest(1, "overlay test %d passed\n", 15);
2735 }
2736
2737 #else
2738
of_unittest_overlay_i2c_14(void)2739 static inline void of_unittest_overlay_i2c_14(void) { }
of_unittest_overlay_i2c_15(void)2740 static inline void of_unittest_overlay_i2c_15(void) { }
2741
2742 #endif
2743
of_unittest_overlay(void)2744 static void __init of_unittest_overlay(void)
2745 {
2746 struct device_node *bus_np = NULL;
2747
2748 if (platform_driver_register(&unittest_driver)) {
2749 unittest(0, "could not register unittest driver\n");
2750 goto out;
2751 }
2752
2753 bus_np = of_find_node_by_path(bus_path);
2754 if (bus_np == NULL) {
2755 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2756 goto out;
2757 }
2758
2759 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2760 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2761 goto out;
2762 }
2763
2764 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2765 unittest(0, "could not find unittest0 @ \"%s\"\n",
2766 unittest_path(100, PDEV_OVERLAY));
2767 goto out;
2768 }
2769
2770 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2771 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2772 unittest_path(101, PDEV_OVERLAY));
2773 goto out;
2774 }
2775
2776 unittest(1, "basic infrastructure of overlays passed");
2777
2778 /* tests in sequence */
2779 of_unittest_overlay_0();
2780 of_unittest_overlay_1();
2781 of_unittest_overlay_2();
2782 of_unittest_overlay_3();
2783 of_unittest_overlay_4();
2784 of_unittest_overlay_5();
2785 of_unittest_overlay_6();
2786 of_unittest_overlay_8();
2787
2788 of_unittest_overlay_10();
2789 of_unittest_overlay_11();
2790
2791 #if IS_BUILTIN(CONFIG_I2C)
2792 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2793 goto out;
2794
2795 of_unittest_overlay_i2c_12();
2796 of_unittest_overlay_i2c_13();
2797 of_unittest_overlay_i2c_14();
2798 of_unittest_overlay_i2c_15();
2799
2800 of_unittest_overlay_i2c_cleanup();
2801 #endif
2802
2803 of_unittest_overlay_gpio();
2804
2805 of_unittest_destroy_tracked_overlays();
2806
2807 out:
2808 of_node_put(bus_np);
2809 }
2810
2811 #else
of_unittest_overlay(void)2812 static inline void __init of_unittest_overlay(void) { }
2813 #endif
2814
2815 #ifdef CONFIG_OF_OVERLAY
2816
2817 /*
2818 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2819 * in scripts/Makefile.lib
2820 */
2821
2822 #define OVERLAY_INFO_EXTERN(name) \
2823 extern uint8_t __dtb_##name##_begin[]; \
2824 extern uint8_t __dtb_##name##_end[]
2825
2826 #define OVERLAY_INFO(overlay_name, expected) \
2827 { .dtb_begin = __dtb_##overlay_name##_begin, \
2828 .dtb_end = __dtb_##overlay_name##_end, \
2829 .expected_result = expected, \
2830 .name = #overlay_name, \
2831 }
2832
2833 struct overlay_info {
2834 uint8_t *dtb_begin;
2835 uint8_t *dtb_end;
2836 int expected_result;
2837 int overlay_id;
2838 char *name;
2839 };
2840
2841 OVERLAY_INFO_EXTERN(overlay_base);
2842 OVERLAY_INFO_EXTERN(overlay);
2843 OVERLAY_INFO_EXTERN(overlay_0);
2844 OVERLAY_INFO_EXTERN(overlay_1);
2845 OVERLAY_INFO_EXTERN(overlay_2);
2846 OVERLAY_INFO_EXTERN(overlay_3);
2847 OVERLAY_INFO_EXTERN(overlay_4);
2848 OVERLAY_INFO_EXTERN(overlay_5);
2849 OVERLAY_INFO_EXTERN(overlay_6);
2850 OVERLAY_INFO_EXTERN(overlay_7);
2851 OVERLAY_INFO_EXTERN(overlay_8);
2852 OVERLAY_INFO_EXTERN(overlay_9);
2853 OVERLAY_INFO_EXTERN(overlay_10);
2854 OVERLAY_INFO_EXTERN(overlay_11);
2855 OVERLAY_INFO_EXTERN(overlay_12);
2856 OVERLAY_INFO_EXTERN(overlay_13);
2857 OVERLAY_INFO_EXTERN(overlay_15);
2858 OVERLAY_INFO_EXTERN(overlay_gpio_01);
2859 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2860 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2861 OVERLAY_INFO_EXTERN(overlay_gpio_03);
2862 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2863 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2864 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2865 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2866 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2867 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2868
2869 /* entries found by name */
2870 static struct overlay_info overlays[] = {
2871 OVERLAY_INFO(overlay_base, -9999),
2872 OVERLAY_INFO(overlay, 0),
2873 OVERLAY_INFO(overlay_0, 0),
2874 OVERLAY_INFO(overlay_1, 0),
2875 OVERLAY_INFO(overlay_2, 0),
2876 OVERLAY_INFO(overlay_3, 0),
2877 OVERLAY_INFO(overlay_4, 0),
2878 OVERLAY_INFO(overlay_5, 0),
2879 OVERLAY_INFO(overlay_6, 0),
2880 OVERLAY_INFO(overlay_7, 0),
2881 OVERLAY_INFO(overlay_8, 0),
2882 OVERLAY_INFO(overlay_9, 0),
2883 OVERLAY_INFO(overlay_10, 0),
2884 OVERLAY_INFO(overlay_11, 0),
2885 OVERLAY_INFO(overlay_12, 0),
2886 OVERLAY_INFO(overlay_13, 0),
2887 OVERLAY_INFO(overlay_15, 0),
2888 OVERLAY_INFO(overlay_gpio_01, 0),
2889 OVERLAY_INFO(overlay_gpio_02a, 0),
2890 OVERLAY_INFO(overlay_gpio_02b, 0),
2891 OVERLAY_INFO(overlay_gpio_03, 0),
2892 OVERLAY_INFO(overlay_gpio_04a, 0),
2893 OVERLAY_INFO(overlay_gpio_04b, 0),
2894 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2895 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2896 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2897 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2898 /* end marker */
2899 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2900 };
2901
2902 static struct device_node *overlay_base_root;
2903
dt_alloc_memory(u64 size,u64 align)2904 static void * __init dt_alloc_memory(u64 size, u64 align)
2905 {
2906 void *ptr = memblock_alloc(size, align);
2907
2908 if (!ptr)
2909 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2910 __func__, size, align);
2911
2912 return ptr;
2913 }
2914
2915 /*
2916 * Create base device tree for the overlay unittest.
2917 *
2918 * This is called from very early boot code.
2919 *
2920 * Do as much as possible the same way as done in __unflatten_device_tree
2921 * and other early boot steps for the normal FDT so that the overlay base
2922 * unflattened tree will have the same characteristics as the real tree
2923 * (such as having memory allocated by the early allocator). The goal
2924 * is to test "the real thing" as much as possible, and test "test setup
2925 * code" as little as possible.
2926 *
2927 * Have to stop before resolving phandles, because that uses kmalloc.
2928 */
unittest_unflatten_overlay_base(void)2929 void __init unittest_unflatten_overlay_base(void)
2930 {
2931 struct overlay_info *info;
2932 u32 data_size;
2933 void *new_fdt;
2934 u32 size;
2935 int found = 0;
2936 const char *overlay_name = "overlay_base";
2937
2938 for (info = overlays; info && info->name; info++) {
2939 if (!strcmp(overlay_name, info->name)) {
2940 found = 1;
2941 break;
2942 }
2943 }
2944 if (!found) {
2945 pr_err("no overlay data for %s\n", overlay_name);
2946 return;
2947 }
2948
2949 info = &overlays[0];
2950
2951 if (info->expected_result != -9999) {
2952 pr_err("No dtb 'overlay_base' to attach\n");
2953 return;
2954 }
2955
2956 data_size = info->dtb_end - info->dtb_begin;
2957 if (!data_size) {
2958 pr_err("No dtb 'overlay_base' to attach\n");
2959 return;
2960 }
2961
2962 size = fdt_totalsize(info->dtb_begin);
2963 if (size != data_size) {
2964 pr_err("dtb 'overlay_base' header totalsize != actual size");
2965 return;
2966 }
2967
2968 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2969 if (!new_fdt) {
2970 pr_err("alloc for dtb 'overlay_base' failed");
2971 return;
2972 }
2973
2974 memcpy(new_fdt, info->dtb_begin, size);
2975
2976 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2977 dt_alloc_memory, true);
2978 }
2979
2980 /*
2981 * The purpose of of_unittest_overlay_data_add is to add an
2982 * overlay in the normal fashion. This is a test of the whole
2983 * picture, instead of testing individual elements.
2984 *
2985 * A secondary purpose is to be able to verify that the contents of
2986 * /proc/device-tree/ contains the updated structure and values from
2987 * the overlay. That must be verified separately in user space.
2988 *
2989 * Return 0 on unexpected error.
2990 */
overlay_data_apply(const char * overlay_name,int * overlay_id)2991 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2992 {
2993 struct overlay_info *info;
2994 int found = 0;
2995 int ret;
2996 u32 size;
2997
2998 for (info = overlays; info && info->name; info++) {
2999 if (!strcmp(overlay_name, info->name)) {
3000 found = 1;
3001 break;
3002 }
3003 }
3004 if (!found) {
3005 pr_err("no overlay data for %s\n", overlay_name);
3006 return 0;
3007 }
3008
3009 size = info->dtb_end - info->dtb_begin;
3010 if (!size)
3011 pr_err("no overlay data for %s\n", overlay_name);
3012
3013 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3014 if (overlay_id)
3015 *overlay_id = info->overlay_id;
3016 if (ret < 0)
3017 goto out;
3018
3019 pr_debug("%s applied\n", overlay_name);
3020
3021 out:
3022 if (ret != info->expected_result)
3023 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3024 info->expected_result, ret, overlay_name);
3025
3026 return (ret == info->expected_result);
3027 }
3028
3029 /*
3030 * The purpose of of_unittest_overlay_high_level is to add an overlay
3031 * in the normal fashion. This is a test of the whole picture,
3032 * instead of individual elements.
3033 *
3034 * The first part of the function is _not_ normal overlay usage; it is
3035 * finishing splicing the base overlay device tree into the live tree.
3036 */
of_unittest_overlay_high_level(void)3037 static __init void of_unittest_overlay_high_level(void)
3038 {
3039 struct device_node *last_sibling;
3040 struct device_node *np;
3041 struct device_node *of_symbols;
3042 struct device_node *overlay_base_symbols;
3043 struct device_node **pprev;
3044 struct property *prop;
3045 int ret;
3046
3047 if (!overlay_base_root) {
3048 unittest(0, "overlay_base_root not initialized\n");
3049 return;
3050 }
3051
3052 /*
3053 * Could not fixup phandles in unittest_unflatten_overlay_base()
3054 * because kmalloc() was not yet available.
3055 */
3056 of_overlay_mutex_lock();
3057 of_resolve_phandles(overlay_base_root);
3058 of_overlay_mutex_unlock();
3059
3060
3061 /*
3062 * do not allow overlay_base to duplicate any node already in
3063 * tree, this greatly simplifies the code
3064 */
3065
3066 /*
3067 * remove overlay_base_root node "__local_fixups", after
3068 * being used by of_resolve_phandles()
3069 */
3070 pprev = &overlay_base_root->child;
3071 for (np = overlay_base_root->child; np; np = np->sibling) {
3072 if (of_node_name_eq(np, "__local_fixups__")) {
3073 *pprev = np->sibling;
3074 break;
3075 }
3076 pprev = &np->sibling;
3077 }
3078
3079 /* remove overlay_base_root node "__symbols__" if in live tree */
3080 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3081 if (of_symbols) {
3082 /* will have to graft properties from node into live tree */
3083 pprev = &overlay_base_root->child;
3084 for (np = overlay_base_root->child; np; np = np->sibling) {
3085 if (of_node_name_eq(np, "__symbols__")) {
3086 overlay_base_symbols = np;
3087 *pprev = np->sibling;
3088 break;
3089 }
3090 pprev = &np->sibling;
3091 }
3092 }
3093
3094 for_each_child_of_node(overlay_base_root, np) {
3095 struct device_node *base_child;
3096 for_each_child_of_node(of_root, base_child) {
3097 if (!strcmp(np->full_name, base_child->full_name)) {
3098 unittest(0, "illegal node name in overlay_base %pOFn",
3099 np);
3100 return;
3101 }
3102 }
3103 }
3104
3105 /*
3106 * overlay 'overlay_base' is not allowed to have root
3107 * properties, so only need to splice nodes into main device tree.
3108 *
3109 * root node of *overlay_base_root will not be freed, it is lost
3110 * memory.
3111 */
3112
3113 for (np = overlay_base_root->child; np; np = np->sibling)
3114 np->parent = of_root;
3115
3116 mutex_lock(&of_mutex);
3117
3118 for (last_sibling = np = of_root->child; np; np = np->sibling)
3119 last_sibling = np;
3120
3121 if (last_sibling)
3122 last_sibling->sibling = overlay_base_root->child;
3123 else
3124 of_root->child = overlay_base_root->child;
3125
3126 for_each_of_allnodes_from(overlay_base_root, np)
3127 __of_attach_node_sysfs(np);
3128
3129 if (of_symbols) {
3130 struct property *new_prop;
3131 for_each_property_of_node(overlay_base_symbols, prop) {
3132
3133 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3134 if (!new_prop) {
3135 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3136 prop->name);
3137 goto err_unlock;
3138 }
3139 if (__of_add_property(of_symbols, new_prop)) {
3140 kfree(new_prop->name);
3141 kfree(new_prop->value);
3142 kfree(new_prop);
3143 /* "name" auto-generated by unflatten */
3144 if (!strcmp(prop->name, "name"))
3145 continue;
3146 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3147 prop->name);
3148 goto err_unlock;
3149 }
3150 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3151 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3152 prop->name);
3153 goto err_unlock;
3154 }
3155 }
3156 }
3157
3158 mutex_unlock(&of_mutex);
3159
3160
3161 /* now do the normal overlay usage test */
3162
3163 EXPECT_BEGIN(KERN_ERR,
3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3165 EXPECT_BEGIN(KERN_ERR,
3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3167 EXPECT_BEGIN(KERN_ERR,
3168 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3169 EXPECT_BEGIN(KERN_ERR,
3170 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3171 EXPECT_BEGIN(KERN_ERR,
3172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3173 EXPECT_BEGIN(KERN_ERR,
3174 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3175 EXPECT_BEGIN(KERN_ERR,
3176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3177 EXPECT_BEGIN(KERN_ERR,
3178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3179 EXPECT_BEGIN(KERN_ERR,
3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3181 EXPECT_BEGIN(KERN_ERR,
3182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3183 EXPECT_BEGIN(KERN_ERR,
3184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3185
3186 ret = overlay_data_apply("overlay", NULL);
3187
3188 EXPECT_END(KERN_ERR,
3189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3190 EXPECT_END(KERN_ERR,
3191 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3192 EXPECT_END(KERN_ERR,
3193 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3194 EXPECT_END(KERN_ERR,
3195 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3196 EXPECT_END(KERN_ERR,
3197 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3198 EXPECT_END(KERN_ERR,
3199 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3200 EXPECT_END(KERN_ERR,
3201 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3202 EXPECT_END(KERN_ERR,
3203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3204 EXPECT_END(KERN_ERR,
3205 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3206 EXPECT_END(KERN_ERR,
3207 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3208 EXPECT_END(KERN_ERR,
3209 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3210
3211 unittest(ret, "Adding overlay 'overlay' failed\n");
3212
3213 EXPECT_BEGIN(KERN_ERR,
3214 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3215 EXPECT_BEGIN(KERN_ERR,
3216 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3217
3218 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3219 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3220
3221 EXPECT_END(KERN_ERR,
3222 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3223 EXPECT_END(KERN_ERR,
3224 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3225
3226 EXPECT_BEGIN(KERN_ERR,
3227 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3228 EXPECT_BEGIN(KERN_ERR,
3229 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3230 EXPECT_BEGIN(KERN_ERR,
3231 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3232
3233 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3234 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3235
3236 EXPECT_END(KERN_ERR,
3237 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3238 EXPECT_END(KERN_ERR,
3239 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3240 EXPECT_END(KERN_ERR,
3241 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3242
3243 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3244 "Adding overlay 'overlay_bad_phandle' failed\n");
3245
3246 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3247 "Adding overlay 'overlay_bad_symbol' failed\n");
3248
3249 return;
3250
3251 err_unlock:
3252 mutex_unlock(&of_mutex);
3253 }
3254
3255 #else
3256
of_unittest_overlay_high_level(void)3257 static inline __init void of_unittest_overlay_high_level(void) {}
3258
3259 #endif
3260
of_unittest(void)3261 static int __init of_unittest(void)
3262 {
3263 struct device_node *np;
3264 int res;
3265
3266 pr_info("start of unittest - you will see error messages\n");
3267
3268 /* adding data for unittest */
3269
3270 if (IS_ENABLED(CONFIG_UML))
3271 unittest_unflatten_overlay_base();
3272
3273 res = unittest_data_add();
3274 if (res)
3275 return res;
3276 if (!of_aliases)
3277 of_aliases = of_find_node_by_path("/aliases");
3278
3279 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3280 if (!np) {
3281 pr_info("No testcase data in device tree; not running tests\n");
3282 return 0;
3283 }
3284 of_node_put(np);
3285
3286 of_unittest_check_tree_linkage();
3287 of_unittest_check_phandles();
3288 of_unittest_find_node_by_name();
3289 of_unittest_dynamic();
3290 of_unittest_parse_phandle_with_args();
3291 of_unittest_parse_phandle_with_args_map();
3292 of_unittest_printf();
3293 of_unittest_property_string();
3294 of_unittest_property_copy();
3295 of_unittest_changeset();
3296 of_unittest_parse_interrupts();
3297 of_unittest_parse_interrupts_extended();
3298 of_unittest_dma_get_max_cpu_address();
3299 of_unittest_parse_dma_ranges();
3300 of_unittest_pci_dma_ranges();
3301 of_unittest_match_node();
3302 of_unittest_platform_populate();
3303 of_unittest_overlay();
3304
3305 /* Double check linkage after removing testcase data */
3306 of_unittest_check_tree_linkage();
3307
3308 of_unittest_overlay_high_level();
3309
3310 pr_info("end of unittest - %i passed, %i failed\n",
3311 unittest_results.passed, unittest_results.failed);
3312
3313 return 0;
3314 }
3315 late_initcall(of_unittest);
3316