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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / of / unittest.c
blobeb51bc147440172ceb00ba4239e72f0c1bc358a8
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
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
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
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
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
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
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);
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
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
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
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))
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
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
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
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.dma_range_map = map;
916 paddr = dma_to_phys(&dev_bogus, expect_dma_addr);
917 dma_addr = phys_to_dma(&dev_bogus, expect_paddr);
918
919 unittest(paddr == expect_paddr,
920 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
921 &paddr, expect_paddr, np);
922 unittest(dma_addr == expect_dma_addr,
923 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
924 &dma_addr, expect_dma_addr, np);
925
926 kfree(map);
927 }
928 of_node_put(np);
929 #endif
930 }
931
932 static void __init of_unittest_parse_dma_ranges(void)
933 {
934 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
935 0x0, 0x20000000);
936 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
937 0x100000000, 0x20000000);
938 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
939 0x80000000, 0x20000000);
940 }
941
942 static void __init of_unittest_pci_dma_ranges(void)
943 {
944 struct device_node *np;
945 struct of_pci_range range;
946 struct of_pci_range_parser parser;
947 int i = 0;
948
949 if (!IS_ENABLED(CONFIG_PCI))
950 return;
951
952 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
953 if (!np) {
954 pr_err("missing testcase data\n");
955 return;
956 }
957
958 if (of_pci_dma_range_parser_init(&parser, np)) {
959 pr_err("missing dma-ranges property\n");
960 return;
961 }
962
963 /*
964 * Get the dma-ranges from the device tree
965 */
966 for_each_of_pci_range(&parser, &range) {
967 if (!i) {
968 unittest(range.size == 0x10000000,
969 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
970 np, range.size);
971 unittest(range.cpu_addr == 0x20000000,
972 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
973 range.cpu_addr, np);
974 unittest(range.pci_addr == 0x80000000,
975 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
976 range.pci_addr, np);
977 } else {
978 unittest(range.size == 0x10000000,
979 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
980 np, range.size);
981 unittest(range.cpu_addr == 0x40000000,
982 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
983 range.cpu_addr, np);
984 unittest(range.pci_addr == 0xc0000000,
985 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
986 range.pci_addr, np);
987 }
988 i++;
989 }
990
991 of_node_put(np);
992 }
993
994 static void __init of_unittest_parse_interrupts(void)
995 {
996 struct device_node *np;
997 struct of_phandle_args args;
998 int i, rc;
999
1000 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1001 return;
1002
1003 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1004 if (!np) {
1005 pr_err("missing testcase data\n");
1006 return;
1007 }
1008
1009 for (i = 0; i < 4; i++) {
1010 bool passed = true;
1011
1012 memset(&args, 0, sizeof(args));
1013 rc = of_irq_parse_one(np, i, &args);
1014
1015 passed &= !rc;
1016 passed &= (args.args_count == 1);
1017 passed &= (args.args[0] == (i + 1));
1018
1019 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1020 i, args.np, rc);
1021 }
1022 of_node_put(np);
1023
1024 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1025 if (!np) {
1026 pr_err("missing testcase data\n");
1027 return;
1028 }
1029
1030 for (i = 0; i < 4; i++) {
1031 bool passed = true;
1032
1033 memset(&args, 0, sizeof(args));
1034 rc = of_irq_parse_one(np, i, &args);
1035
1036 /* Test the values from tests-phandle.dtsi */
1037 switch (i) {
1038 case 0:
1039 passed &= !rc;
1040 passed &= (args.args_count == 1);
1041 passed &= (args.args[0] == 9);
1042 break;
1043 case 1:
1044 passed &= !rc;
1045 passed &= (args.args_count == 3);
1046 passed &= (args.args[0] == 10);
1047 passed &= (args.args[1] == 11);
1048 passed &= (args.args[2] == 12);
1049 break;
1050 case 2:
1051 passed &= !rc;
1052 passed &= (args.args_count == 2);
1053 passed &= (args.args[0] == 13);
1054 passed &= (args.args[1] == 14);
1055 break;
1056 case 3:
1057 passed &= !rc;
1058 passed &= (args.args_count == 2);
1059 passed &= (args.args[0] == 15);
1060 passed &= (args.args[1] == 16);
1061 break;
1062 default:
1063 passed = false;
1064 }
1065 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1066 i, args.np, rc);
1067 }
1068 of_node_put(np);
1069 }
1070
1071 static void __init of_unittest_parse_interrupts_extended(void)
1072 {
1073 struct device_node *np;
1074 struct of_phandle_args args;
1075 int i, rc;
1076
1077 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1078 return;
1079
1080 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1081 if (!np) {
1082 pr_err("missing testcase data\n");
1083 return;
1084 }
1085
1086 for (i = 0; i < 7; i++) {
1087 bool passed = true;
1088
1089 memset(&args, 0, sizeof(args));
1090 rc = of_irq_parse_one(np, i, &args);
1091
1092 /* Test the values from tests-phandle.dtsi */
1093 switch (i) {
1094 case 0:
1095 passed &= !rc;
1096 passed &= (args.args_count == 1);
1097 passed &= (args.args[0] == 1);
1098 break;
1099 case 1:
1100 passed &= !rc;
1101 passed &= (args.args_count == 3);
1102 passed &= (args.args[0] == 2);
1103 passed &= (args.args[1] == 3);
1104 passed &= (args.args[2] == 4);
1105 break;
1106 case 2:
1107 passed &= !rc;
1108 passed &= (args.args_count == 2);
1109 passed &= (args.args[0] == 5);
1110 passed &= (args.args[1] == 6);
1111 break;
1112 case 3:
1113 passed &= !rc;
1114 passed &= (args.args_count == 1);
1115 passed &= (args.args[0] == 9);
1116 break;
1117 case 4:
1118 passed &= !rc;
1119 passed &= (args.args_count == 3);
1120 passed &= (args.args[0] == 10);
1121 passed &= (args.args[1] == 11);
1122 passed &= (args.args[2] == 12);
1123 break;
1124 case 5:
1125 passed &= !rc;
1126 passed &= (args.args_count == 2);
1127 passed &= (args.args[0] == 13);
1128 passed &= (args.args[1] == 14);
1129 break;
1130 case 6:
1131 passed &= !rc;
1132 passed &= (args.args_count == 1);
1133 passed &= (args.args[0] == 15);
1134 break;
1135 default:
1136 passed = false;
1137 }
1138
1139 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1140 i, args.np, rc);
1141 }
1142 of_node_put(np);
1143 }
1144
1145 static const struct of_device_id match_node_table[] = {
1146 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1147 { .data = "B", .type = "type1", }, /* followed by type alone */
1148
1149 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1150 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1151 { .data = "Cc", .name = "name2", .type = "type2", },
1152
1153 { .data = "E", .compatible = "compat3" },
1154 { .data = "G", .compatible = "compat2", },
1155 { .data = "H", .compatible = "compat2", .name = "name5", },
1156 { .data = "I", .compatible = "compat2", .type = "type1", },
1157 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1158 { .data = "K", .compatible = "compat2", .name = "name9", },
1159 {}
1160 };
1161
1162 static struct {
1163 const char *path;
1164 const char *data;
1165 } match_node_tests[] = {
1166 { .path = "/testcase-data/match-node/name0", .data = "A", },
1167 { .path = "/testcase-data/match-node/name1", .data = "B", },
1168 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1169 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1170 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1171 { .path = "/testcase-data/match-node/name3", .data = "E", },
1172 { .path = "/testcase-data/match-node/name4", .data = "G", },
1173 { .path = "/testcase-data/match-node/name5", .data = "H", },
1174 { .path = "/testcase-data/match-node/name6", .data = "G", },
1175 { .path = "/testcase-data/match-node/name7", .data = "I", },
1176 { .path = "/testcase-data/match-node/name8", .data = "J", },
1177 { .path = "/testcase-data/match-node/name9", .data = "K", },
1178 };
1179
1180 static void __init of_unittest_match_node(void)
1181 {
1182 struct device_node *np;
1183 const struct of_device_id *match;
1184 int i;
1185
1186 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1187 np = of_find_node_by_path(match_node_tests[i].path);
1188 if (!np) {
1189 unittest(0, "missing testcase node %s\n",
1190 match_node_tests[i].path);
1191 continue;
1192 }
1193
1194 match = of_match_node(match_node_table, np);
1195 if (!match) {
1196 unittest(0, "%s didn't match anything\n",
1197 match_node_tests[i].path);
1198 continue;
1199 }
1200
1201 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1202 unittest(0, "%s got wrong match. expected %s, got %s\n",
1203 match_node_tests[i].path, match_node_tests[i].data,
1204 (const char *)match->data);
1205 continue;
1206 }
1207 unittest(1, "passed");
1208 }
1209 }
1210
1211 static struct resource test_bus_res = {
1212 .start = 0xfffffff8,
1213 .end = 0xfffffff9,
1214 .flags = IORESOURCE_MEM,
1215 };
1216 static const struct platform_device_info test_bus_info = {
1217 .name = "unittest-bus",
1218 };
1219 static void __init of_unittest_platform_populate(void)
1220 {
1221 int irq, rc;
1222 struct device_node *np, *child, *grandchild;
1223 struct platform_device *pdev, *test_bus;
1224 const struct of_device_id match[] = {
1225 { .compatible = "test-device", },
1226 {}
1227 };
1228
1229 np = of_find_node_by_path("/testcase-data");
1230 of_platform_default_populate(np, NULL, NULL);
1231
1232 /* Test that a missing irq domain returns -EPROBE_DEFER */
1233 np = of_find_node_by_path("/testcase-data/testcase-device1");
1234 pdev = of_find_device_by_node(np);
1235 unittest(pdev, "device 1 creation failed\n");
1236
1237 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1238 irq = platform_get_irq(pdev, 0);
1239 unittest(irq == -EPROBE_DEFER,
1240 "device deferred probe failed - %d\n", irq);
1241
1242 /* Test that a parsing failure does not return -EPROBE_DEFER */
1243 np = of_find_node_by_path("/testcase-data/testcase-device2");
1244 pdev = of_find_device_by_node(np);
1245 unittest(pdev, "device 2 creation failed\n");
1246
1247 EXPECT_BEGIN(KERN_INFO,
1248 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1249
1250 irq = platform_get_irq(pdev, 0);
1251
1252 EXPECT_END(KERN_INFO,
1253 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1254
1255 unittest(irq < 0 && irq != -EPROBE_DEFER,
1256 "device parsing error failed - %d\n", irq);
1257 }
1258
1259 np = of_find_node_by_path("/testcase-data/platform-tests");
1260 unittest(np, "No testcase data in device tree\n");
1261 if (!np)
1262 return;
1263
1264 test_bus = platform_device_register_full(&test_bus_info);
1265 rc = PTR_ERR_OR_ZERO(test_bus);
1266 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1267 if (rc) {
1268 of_node_put(np);
1269 return;
1270 }
1271 test_bus->dev.of_node = np;
1272
1273 /*
1274 * Add a dummy resource to the test bus node after it is
1275 * registered to catch problems with un-inserted resources. The
1276 * DT code doesn't insert the resources, and it has caused the
1277 * kernel to oops in the past. This makes sure the same bug
1278 * doesn't crop up again.
1279 */
1280 platform_device_add_resources(test_bus, &test_bus_res, 1);
1281
1282 of_platform_populate(np, match, NULL, &test_bus->dev);
1283 for_each_child_of_node(np, child) {
1284 for_each_child_of_node(child, grandchild) {
1285 pdev = of_find_device_by_node(grandchild);
1286 unittest(pdev,
1287 "Could not create device for node '%pOFn'\n",
1288 grandchild);
1289 of_dev_put(pdev);
1290 }
1291 }
1292
1293 of_platform_depopulate(&test_bus->dev);
1294 for_each_child_of_node(np, child) {
1295 for_each_child_of_node(child, grandchild)
1296 unittest(!of_find_device_by_node(grandchild),
1297 "device didn't get destroyed '%pOFn'\n",
1298 grandchild);
1299 }
1300
1301 platform_device_unregister(test_bus);
1302 of_node_put(np);
1303 }
1304
1305 /**
1306 * update_node_properties - adds the properties
1307 * of np into dup node (present in live tree) and
1308 * updates parent of children of np to dup.
1309 *
1310 * @np: node whose properties are being added to the live tree
1311 * @dup: node present in live tree to be updated
1312 */
1313 static void update_node_properties(struct device_node *np,
1314 struct device_node *dup)
1315 {
1316 struct property *prop;
1317 struct property *save_next;
1318 struct device_node *child;
1319 int ret;
1320
1321 for_each_child_of_node(np, child)
1322 child->parent = dup;
1323
1324 /*
1325 * "unittest internal error: unable to add testdata property"
1326 *
1327 * If this message reports a property in node '/__symbols__' then
1328 * the respective unittest overlay contains a label that has the
1329 * same name as a label in the live devicetree. The label will
1330 * be in the live devicetree only if the devicetree source was
1331 * compiled with the '-@' option. If you encounter this error,
1332 * please consider renaming __all__ of the labels in the unittest
1333 * overlay dts files with an odd prefix that is unlikely to be
1334 * used in a real devicetree.
1335 */
1336
1337 /*
1338 * open code for_each_property_of_node() because of_add_property()
1339 * sets prop->next to NULL
1340 */
1341 for (prop = np->properties; prop != NULL; prop = save_next) {
1342 save_next = prop->next;
1343 ret = of_add_property(dup, prop);
1344 if (ret) {
1345 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1346 continue;
1347 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1348 np, prop->name);
1349 }
1350 }
1351 }
1352
1353 /**
1354 * attach_node_and_children - attaches nodes
1355 * and its children to live tree.
1356 * CAUTION: misleading function name - if node @np already exists in
1357 * the live tree then children of @np are *not* attached to the live
1358 * tree. This works for the current test devicetree nodes because such
1359 * nodes do not have child nodes.
1360 *
1361 * @np: Node to attach to live tree
1362 */
1363 static void attach_node_and_children(struct device_node *np)
1364 {
1365 struct device_node *next, *dup, *child;
1366 unsigned long flags;
1367 const char *full_name;
1368
1369 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1370
1371 if (!strcmp(full_name, "/__local_fixups__") ||
1372 !strcmp(full_name, "/__fixups__")) {
1373 kfree(full_name);
1374 return;
1375 }
1376
1377 dup = of_find_node_by_path(full_name);
1378 kfree(full_name);
1379 if (dup) {
1380 update_node_properties(np, dup);
1381 return;
1382 }
1383
1384 child = np->child;
1385 np->child = NULL;
1386
1387 mutex_lock(&of_mutex);
1388 raw_spin_lock_irqsave(&devtree_lock, flags);
1389 np->sibling = np->parent->child;
1390 np->parent->child = np;
1391 of_node_clear_flag(np, OF_DETACHED);
1392 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1393
1394 __of_attach_node_sysfs(np);
1395 mutex_unlock(&of_mutex);
1396
1397 while (child) {
1398 next = child->sibling;
1399 attach_node_and_children(child);
1400 child = next;
1401 }
1402 }
1403
1404 /**
1405 * unittest_data_add - Reads, copies data from
1406 * linked tree and attaches it to the live tree
1407 */
1408 static int __init unittest_data_add(void)
1409 {
1410 void *unittest_data;
1411 struct device_node *unittest_data_node, *np;
1412 /*
1413 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1414 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1415 */
1416 extern uint8_t __dtb_testcases_begin[];
1417 extern uint8_t __dtb_testcases_end[];
1418 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1419 int rc;
1420
1421 if (!size) {
1422 pr_warn("%s: No testcase data to attach; not running tests\n",
1423 __func__);
1424 return -ENODATA;
1425 }
1426
1427 /* creating copy */
1428 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
1429 if (!unittest_data)
1430 return -ENOMEM;
1431
1432 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
1433 if (!unittest_data_node) {
1434 pr_warn("%s: No tree to attach; not running tests\n", __func__);
1435 kfree(unittest_data);
1436 return -ENODATA;
1437 }
1438
1439 /*
1440 * This lock normally encloses of_resolve_phandles()
1441 */
1442 of_overlay_mutex_lock();
1443
1444 rc = of_resolve_phandles(unittest_data_node);
1445 if (rc) {
1446 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1447 of_overlay_mutex_unlock();
1448 return -EINVAL;
1449 }
1450
1451 if (!of_root) {
1452 of_root = unittest_data_node;
1453 for_each_of_allnodes(np)
1454 __of_attach_node_sysfs(np);
1455 of_aliases = of_find_node_by_path("/aliases");
1456 of_chosen = of_find_node_by_path("/chosen");
1457 of_overlay_mutex_unlock();
1458 return 0;
1459 }
1460
1461 EXPECT_BEGIN(KERN_INFO,
1462 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1463
1464 /* attach the sub-tree to live tree */
1465 np = unittest_data_node->child;
1466 while (np) {
1467 struct device_node *next = np->sibling;
1468
1469 np->parent = of_root;
1470 attach_node_and_children(np);
1471 np = next;
1472 }
1473
1474 EXPECT_END(KERN_INFO,
1475 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1476
1477 of_overlay_mutex_unlock();
1478
1479 return 0;
1480 }
1481
1482 #ifdef CONFIG_OF_OVERLAY
1483 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1484
1485 static int unittest_probe(struct platform_device *pdev)
1486 {
1487 struct device *dev = &pdev->dev;
1488 struct device_node *np = dev->of_node;
1489
1490 if (np == NULL) {
1491 dev_err(dev, "No OF data for device\n");
1492 return -EINVAL;
1493
1494 }
1495
1496 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1497
1498 of_platform_populate(np, NULL, NULL, &pdev->dev);
1499
1500 return 0;
1501 }
1502
1503 static int unittest_remove(struct platform_device *pdev)
1504 {
1505 struct device *dev = &pdev->dev;
1506 struct device_node *np = dev->of_node;
1507
1508 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1509 return 0;
1510 }
1511
1512 static const struct of_device_id unittest_match[] = {
1513 { .compatible = "unittest", },
1514 {},
1515 };
1516
1517 static struct platform_driver unittest_driver = {
1518 .probe = unittest_probe,
1519 .remove = unittest_remove,
1520 .driver = {
1521 .name = "unittest",
1522 .of_match_table = of_match_ptr(unittest_match),
1523 },
1524 };
1525
1526 /* get the platform device instantiated at the path */
1527 static struct platform_device *of_path_to_platform_device(const char *path)
1528 {
1529 struct device_node *np;
1530 struct platform_device *pdev;
1531
1532 np = of_find_node_by_path(path);
1533 if (np == NULL)
1534 return NULL;
1535
1536 pdev = of_find_device_by_node(np);
1537 of_node_put(np);
1538
1539 return pdev;
1540 }
1541
1542 /* find out if a platform device exists at that path */
1543 static int of_path_platform_device_exists(const char *path)
1544 {
1545 struct platform_device *pdev;
1546
1547 pdev = of_path_to_platform_device(path);
1548 platform_device_put(pdev);
1549 return pdev != NULL;
1550 }
1551
1552 #ifdef CONFIG_OF_GPIO
1553
1554 struct unittest_gpio_dev {
1555 struct gpio_chip chip;
1556 };
1557
1558 static int unittest_gpio_chip_request_count;
1559 static int unittest_gpio_probe_count;
1560 static int unittest_gpio_probe_pass_count;
1561
1562 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1563 {
1564 unittest_gpio_chip_request_count++;
1565
1566 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1567 unittest_gpio_chip_request_count);
1568 return 0;
1569 }
1570
1571 static int unittest_gpio_probe(struct platform_device *pdev)
1572 {
1573 struct unittest_gpio_dev *devptr;
1574 int ret;
1575
1576 unittest_gpio_probe_count++;
1577
1578 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1579 if (!devptr)
1580 return -ENOMEM;
1581
1582 platform_set_drvdata(pdev, devptr);
1583
1584 devptr->chip.of_node = pdev->dev.of_node;
1585 devptr->chip.label = "of-unittest-gpio";
1586 devptr->chip.base = -1; /* dynamic allocation */
1587 devptr->chip.ngpio = 5;
1588 devptr->chip.request = unittest_gpio_chip_request;
1589
1590 ret = gpiochip_add_data(&devptr->chip, NULL);
1591
1592 unittest(!ret,
1593 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1594
1595 if (!ret)
1596 unittest_gpio_probe_pass_count++;
1597 return ret;
1598 }
1599
1600 static int unittest_gpio_remove(struct platform_device *pdev)
1601 {
1602 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1603 struct device *dev = &pdev->dev;
1604 struct device_node *np = pdev->dev.of_node;
1605
1606 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1607
1608 if (!gdev)
1609 return -EINVAL;
1610
1611 if (gdev->chip.base != -1)
1612 gpiochip_remove(&gdev->chip);
1613
1614 platform_set_drvdata(pdev, NULL);
1615 kfree(gdev);
1616
1617 return 0;
1618 }
1619
1620 static const struct of_device_id unittest_gpio_id[] = {
1621 { .compatible = "unittest-gpio", },
1622 {}
1623 };
1624
1625 static struct platform_driver unittest_gpio_driver = {
1626 .probe = unittest_gpio_probe,
1627 .remove = unittest_gpio_remove,
1628 .driver = {
1629 .name = "unittest-gpio",
1630 .of_match_table = of_match_ptr(unittest_gpio_id),
1631 },
1632 };
1633
1634 static void __init of_unittest_overlay_gpio(void)
1635 {
1636 int chip_request_count;
1637 int probe_pass_count;
1638 int ret;
1639
1640 /*
1641 * tests: apply overlays before registering driver
1642 * Similar to installing a driver as a module, the
1643 * driver is registered after applying the overlays.
1644 *
1645 * The overlays are applied by overlay_data_apply()
1646 * instead of of_unittest_apply_overlay() so that they
1647 * will not be tracked. Thus they will not be removed
1648 * by of_unittest_destroy_tracked_overlays().
1649 *
1650 * - apply overlay_gpio_01
1651 * - apply overlay_gpio_02a
1652 * - apply overlay_gpio_02b
1653 * - register driver
1654 *
1655 * register driver will result in
1656 * - probe and processing gpio hog for overlay_gpio_01
1657 * - probe for overlay_gpio_02a
1658 * - processing gpio for overlay_gpio_02b
1659 */
1660
1661 probe_pass_count = unittest_gpio_probe_pass_count;
1662 chip_request_count = unittest_gpio_chip_request_count;
1663
1664 /*
1665 * overlay_gpio_01 contains gpio node and child gpio hog node
1666 * overlay_gpio_02a contains gpio node
1667 * overlay_gpio_02b contains child gpio hog node
1668 */
1669
1670 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1671 "Adding overlay 'overlay_gpio_01' failed\n");
1672
1673 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1674 "Adding overlay 'overlay_gpio_02a' failed\n");
1675
1676 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1677 "Adding overlay 'overlay_gpio_02b' failed\n");
1678
1679 /*
1680 * messages are the result of the probes, after the
1681 * driver is registered
1682 */
1683
1684 EXPECT_BEGIN(KERN_INFO,
1685 "GPIO line <<int>> (line-B-input) hogged as input\n");
1686
1687 EXPECT_BEGIN(KERN_INFO,
1688 "GPIO line <<int>> (line-A-input) hogged as input\n");
1689
1690 ret = platform_driver_register(&unittest_gpio_driver);
1691 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1692 return;
1693
1694 EXPECT_END(KERN_INFO,
1695 "GPIO line <<int>> (line-A-input) hogged as input\n");
1696 EXPECT_END(KERN_INFO,
1697 "GPIO line <<int>> (line-B-input) hogged as input\n");
1698
1699 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1700 "unittest_gpio_probe() failed or not called\n");
1701
1702 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1703 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1704 unittest_gpio_chip_request_count - chip_request_count);
1705
1706 /*
1707 * tests: apply overlays after registering driver
1708 *
1709 * Similar to a driver built-in to the kernel, the
1710 * driver is registered before applying the overlays.
1711 *
1712 * overlay_gpio_03 contains gpio node and child gpio hog node
1713 *
1714 * - apply overlay_gpio_03
1715 *
1716 * apply overlay will result in
1717 * - probe and processing gpio hog.
1718 */
1719
1720 probe_pass_count = unittest_gpio_probe_pass_count;
1721 chip_request_count = unittest_gpio_chip_request_count;
1722
1723 EXPECT_BEGIN(KERN_INFO,
1724 "GPIO line <<int>> (line-D-input) hogged as input\n");
1725
1726 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1727
1728 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1729 "Adding overlay 'overlay_gpio_03' failed\n");
1730
1731 EXPECT_END(KERN_INFO,
1732 "GPIO line <<int>> (line-D-input) hogged as input\n");
1733
1734 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1735 "unittest_gpio_probe() failed or not called\n");
1736
1737 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1738 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1739 unittest_gpio_chip_request_count - chip_request_count);
1740
1741 /*
1742 * overlay_gpio_04a contains gpio node
1743 *
1744 * - apply overlay_gpio_04a
1745 *
1746 * apply the overlay will result in
1747 * - probe for overlay_gpio_04a
1748 */
1749
1750 probe_pass_count = unittest_gpio_probe_pass_count;
1751 chip_request_count = unittest_gpio_chip_request_count;
1752
1753 /* overlay_gpio_04a contains gpio node */
1754
1755 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1756 "Adding overlay 'overlay_gpio_04a' failed\n");
1757
1758 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1759 "unittest_gpio_probe() failed or not called\n");
1760
1761 /*
1762 * overlay_gpio_04b contains child gpio hog node
1763 *
1764 * - apply overlay_gpio_04b
1765 *
1766 * apply the overlay will result in
1767 * - processing gpio for overlay_gpio_04b
1768 */
1769
1770 EXPECT_BEGIN(KERN_INFO,
1771 "GPIO line <<int>> (line-C-input) hogged as input\n");
1772
1773 /* overlay_gpio_04b contains child gpio hog node */
1774
1775 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1776 "Adding overlay 'overlay_gpio_04b' failed\n");
1777
1778 EXPECT_END(KERN_INFO,
1779 "GPIO line <<int>> (line-C-input) hogged as input\n");
1780
1781 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1782 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1783 unittest_gpio_chip_request_count - chip_request_count);
1784 }
1785
1786 #else
1787
1788 static void __init of_unittest_overlay_gpio(void)
1789 {
1790 /* skip tests */
1791 }
1792
1793 #endif
1794
1795 #if IS_BUILTIN(CONFIG_I2C)
1796
1797 /* get the i2c client device instantiated at the path */
1798 static struct i2c_client *of_path_to_i2c_client(const char *path)
1799 {
1800 struct device_node *np;
1801 struct i2c_client *client;
1802
1803 np = of_find_node_by_path(path);
1804 if (np == NULL)
1805 return NULL;
1806
1807 client = of_find_i2c_device_by_node(np);
1808 of_node_put(np);
1809
1810 return client;
1811 }
1812
1813 /* find out if a i2c client device exists at that path */
1814 static int of_path_i2c_client_exists(const char *path)
1815 {
1816 struct i2c_client *client;
1817
1818 client = of_path_to_i2c_client(path);
1819 if (client)
1820 put_device(&client->dev);
1821 return client != NULL;
1822 }
1823 #else
1824 static int of_path_i2c_client_exists(const char *path)
1825 {
1826 return 0;
1827 }
1828 #endif
1829
1830 enum overlay_type {
1831 PDEV_OVERLAY,
1832 I2C_OVERLAY
1833 };
1834
1835 static int of_path_device_type_exists(const char *path,
1836 enum overlay_type ovtype)
1837 {
1838 switch (ovtype) {
1839 case PDEV_OVERLAY:
1840 return of_path_platform_device_exists(path);
1841 case I2C_OVERLAY:
1842 return of_path_i2c_client_exists(path);
1843 }
1844 return 0;
1845 }
1846
1847 static const char *unittest_path(int nr, enum overlay_type ovtype)
1848 {
1849 const char *base;
1850 static char buf[256];
1851
1852 switch (ovtype) {
1853 case PDEV_OVERLAY:
1854 base = "/testcase-data/overlay-node/test-bus";
1855 break;
1856 case I2C_OVERLAY:
1857 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1858 break;
1859 default:
1860 buf[0] = '\0';
1861 return buf;
1862 }
1863 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1864 buf[sizeof(buf) - 1] = '\0';
1865 return buf;
1866 }
1867
1868 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1869 {
1870 const char *path;
1871
1872 path = unittest_path(unittest_nr, ovtype);
1873
1874 switch (ovtype) {
1875 case PDEV_OVERLAY:
1876 return of_path_platform_device_exists(path);
1877 case I2C_OVERLAY:
1878 return of_path_i2c_client_exists(path);
1879 }
1880 return 0;
1881 }
1882
1883 static const char *overlay_name_from_nr(int nr)
1884 {
1885 static char buf[256];
1886
1887 snprintf(buf, sizeof(buf) - 1,
1888 "overlay_%d", nr);
1889 buf[sizeof(buf) - 1] = '\0';
1890
1891 return buf;
1892 }
1893
1894 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1895
1896 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1897
1898 #define MAX_UNITTEST_OVERLAYS 256
1899 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1900 static int overlay_first_id = -1;
1901
1902 static long of_unittest_overlay_tracked(int id)
1903 {
1904 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1905 return 0;
1906 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1907 }
1908
1909 static void of_unittest_track_overlay(int id)
1910 {
1911 if (overlay_first_id < 0)
1912 overlay_first_id = id;
1913 id -= overlay_first_id;
1914
1915 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1916 return;
1917 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1918 }
1919
1920 static void of_unittest_untrack_overlay(int id)
1921 {
1922 if (overlay_first_id < 0)
1923 return;
1924 id -= overlay_first_id;
1925 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1926 return;
1927 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1928 }
1929
1930 static void of_unittest_destroy_tracked_overlays(void)
1931 {
1932 int id, ret, defers, ovcs_id;
1933
1934 if (overlay_first_id < 0)
1935 return;
1936
1937 /* try until no defers */
1938 do {
1939 defers = 0;
1940 /* remove in reverse order */
1941 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1942 if (!of_unittest_overlay_tracked(id))
1943 continue;
1944
1945 ovcs_id = id + overlay_first_id;
1946 ret = of_overlay_remove(&ovcs_id);
1947 if (ret == -ENODEV) {
1948 pr_warn("%s: no overlay to destroy for #%d\n",
1949 __func__, id + overlay_first_id);
1950 continue;
1951 }
1952 if (ret != 0) {
1953 defers++;
1954 pr_warn("%s: overlay destroy failed for #%d\n",
1955 __func__, id + overlay_first_id);
1956 continue;
1957 }
1958
1959 of_unittest_untrack_overlay(id);
1960 }
1961 } while (defers > 0);
1962 }
1963
1964 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1965 {
1966 const char *overlay_name;
1967
1968 overlay_name = overlay_name_from_nr(overlay_nr);
1969
1970 if (!overlay_data_apply(overlay_name, overlay_id)) {
1971 unittest(0, "could not apply overlay \"%s\"\n",
1972 overlay_name);
1973 return -EFAULT;
1974 }
1975 of_unittest_track_overlay(*overlay_id);
1976
1977 return 0;
1978 }
1979
1980 /* apply an overlay while checking before and after states */
1981 static int __init of_unittest_apply_overlay_check(int overlay_nr,
1982 int unittest_nr, int before, int after,
1983 enum overlay_type ovtype)
1984 {
1985 int ret, ovcs_id;
1986
1987 /* unittest device must not be in before state */
1988 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1989 unittest(0, "%s with device @\"%s\" %s\n",
1990 overlay_name_from_nr(overlay_nr),
1991 unittest_path(unittest_nr, ovtype),
1992 !before ? "enabled" : "disabled");
1993 return -EINVAL;
1994 }
1995
1996 ovcs_id = 0;
1997 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
1998 if (ret != 0) {
1999 /* of_unittest_apply_overlay already called unittest() */
2000 return ret;
2001 }
2002
2003 /* unittest device must be to set to after state */
2004 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2005 unittest(0, "%s failed to create @\"%s\" %s\n",
2006 overlay_name_from_nr(overlay_nr),
2007 unittest_path(unittest_nr, ovtype),
2008 !after ? "enabled" : "disabled");
2009 return -EINVAL;
2010 }
2011
2012 return 0;
2013 }
2014
2015 /* apply an overlay and then revert it while checking before, after states */
2016 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2017 int unittest_nr, int before, int after,
2018 enum overlay_type ovtype)
2019 {
2020 int ret, ovcs_id, save_id;
2021
2022 /* unittest device must be in before state */
2023 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2024 unittest(0, "%s with device @\"%s\" %s\n",
2025 overlay_name_from_nr(overlay_nr),
2026 unittest_path(unittest_nr, ovtype),
2027 !before ? "enabled" : "disabled");
2028 return -EINVAL;
2029 }
2030
2031 /* apply the overlay */
2032 ovcs_id = 0;
2033 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2034 if (ret != 0) {
2035 /* of_unittest_apply_overlay already called unittest() */
2036 return ret;
2037 }
2038
2039 /* unittest device must be in after state */
2040 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2041 unittest(0, "%s failed to create @\"%s\" %s\n",
2042 overlay_name_from_nr(overlay_nr),
2043 unittest_path(unittest_nr, ovtype),
2044 !after ? "enabled" : "disabled");
2045 return -EINVAL;
2046 }
2047
2048 save_id = ovcs_id;
2049 ret = of_overlay_remove(&ovcs_id);
2050 if (ret != 0) {
2051 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2052 overlay_name_from_nr(overlay_nr),
2053 unittest_path(unittest_nr, ovtype));
2054 return ret;
2055 }
2056 of_unittest_untrack_overlay(save_id);
2057
2058 /* unittest device must be again in before state */
2059 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2060 unittest(0, "%s with device @\"%s\" %s\n",
2061 overlay_name_from_nr(overlay_nr),
2062 unittest_path(unittest_nr, ovtype),
2063 !before ? "enabled" : "disabled");
2064 return -EINVAL;
2065 }
2066
2067 return 0;
2068 }
2069
2070 /* test activation of device */
2071 static void __init of_unittest_overlay_0(void)
2072 {
2073 int ret;
2074
2075 EXPECT_BEGIN(KERN_INFO,
2076 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2077
2078 /* device should enable */
2079 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2080
2081 EXPECT_END(KERN_INFO,
2082 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2083
2084 if (ret)
2085 return;
2086
2087 unittest(1, "overlay test %d passed\n", 0);
2088 }
2089
2090 /* test deactivation of device */
2091 static void __init of_unittest_overlay_1(void)
2092 {
2093 int ret;
2094
2095 EXPECT_BEGIN(KERN_INFO,
2096 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2097
2098 /* device should disable */
2099 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2100
2101 EXPECT_END(KERN_INFO,
2102 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2103
2104 if (ret)
2105 return;
2106
2107 unittest(1, "overlay test %d passed\n", 1);
2108
2109 }
2110
2111 /* test activation of device */
2112 static void __init of_unittest_overlay_2(void)
2113 {
2114 int ret;
2115
2116 EXPECT_BEGIN(KERN_INFO,
2117 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2118
2119 /* device should enable */
2120 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2121
2122 EXPECT_END(KERN_INFO,
2123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2124
2125 if (ret)
2126 return;
2127 unittest(1, "overlay test %d passed\n", 2);
2128 }
2129
2130 /* test deactivation of device */
2131 static void __init of_unittest_overlay_3(void)
2132 {
2133 int ret;
2134
2135 EXPECT_BEGIN(KERN_INFO,
2136 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2137
2138 /* device should disable */
2139 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2140
2141 EXPECT_END(KERN_INFO,
2142 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2143
2144 if (ret)
2145 return;
2146
2147 unittest(1, "overlay test %d passed\n", 3);
2148 }
2149
2150 /* test activation of a full device node */
2151 static void __init of_unittest_overlay_4(void)
2152 {
2153 /* device should disable */
2154 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2155 return;
2156
2157 unittest(1, "overlay test %d passed\n", 4);
2158 }
2159
2160 /* test overlay apply/revert sequence */
2161 static void __init of_unittest_overlay_5(void)
2162 {
2163 int ret;
2164
2165 EXPECT_BEGIN(KERN_INFO,
2166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2167
2168 /* device should disable */
2169 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2170
2171 EXPECT_END(KERN_INFO,
2172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2173
2174 if (ret)
2175 return;
2176
2177 unittest(1, "overlay test %d passed\n", 5);
2178 }
2179
2180 /* test overlay application in sequence */
2181 static void __init of_unittest_overlay_6(void)
2182 {
2183 int i, ov_id[2], ovcs_id;
2184 int overlay_nr = 6, unittest_nr = 6;
2185 int before = 0, after = 1;
2186 const char *overlay_name;
2187
2188 int ret;
2189
2190 /* unittest device must be in before state */
2191 for (i = 0; i < 2; i++) {
2192 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2193 != before) {
2194 unittest(0, "%s with device @\"%s\" %s\n",
2195 overlay_name_from_nr(overlay_nr + i),
2196 unittest_path(unittest_nr + i,
2197 PDEV_OVERLAY),
2198 !before ? "enabled" : "disabled");
2199 return;
2200 }
2201 }
2202
2203 /* apply the overlays */
2204
2205 EXPECT_BEGIN(KERN_INFO,
2206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2207
2208 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2209
2210 ret = overlay_data_apply(overlay_name, &ovcs_id);
2211
2212 if (!ret) {
2213 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2214 return;
2215 }
2216 ov_id[0] = ovcs_id;
2217 of_unittest_track_overlay(ov_id[0]);
2218
2219 EXPECT_END(KERN_INFO,
2220 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2221
2222 EXPECT_BEGIN(KERN_INFO,
2223 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2224
2225 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2226
2227 ret = overlay_data_apply(overlay_name, &ovcs_id);
2228
2229 if (!ret) {
2230 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2231 return;
2232 }
2233 ov_id[1] = ovcs_id;
2234 of_unittest_track_overlay(ov_id[1]);
2235
2236 EXPECT_END(KERN_INFO,
2237 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2238
2239
2240 for (i = 0; i < 2; i++) {
2241 /* unittest device must be in after state */
2242 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2243 != after) {
2244 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2245 overlay_name_from_nr(overlay_nr + i),
2246 unittest_path(unittest_nr + i,
2247 PDEV_OVERLAY),
2248 !after ? "enabled" : "disabled");
2249 return;
2250 }
2251 }
2252
2253 for (i = 1; i >= 0; i--) {
2254 ovcs_id = ov_id[i];
2255 if (of_overlay_remove(&ovcs_id)) {
2256 unittest(0, "%s failed destroy @\"%s\"\n",
2257 overlay_name_from_nr(overlay_nr + i),
2258 unittest_path(unittest_nr + i,
2259 PDEV_OVERLAY));
2260 return;
2261 }
2262 of_unittest_untrack_overlay(ov_id[i]);
2263 }
2264
2265 for (i = 0; i < 2; i++) {
2266 /* unittest device must be again in before state */
2267 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2268 != before) {
2269 unittest(0, "%s with device @\"%s\" %s\n",
2270 overlay_name_from_nr(overlay_nr + i),
2271 unittest_path(unittest_nr + i,
2272 PDEV_OVERLAY),
2273 !before ? "enabled" : "disabled");
2274 return;
2275 }
2276 }
2277
2278 unittest(1, "overlay test %d passed\n", 6);
2279
2280 }
2281
2282 /* test overlay application in sequence */
2283 static void __init of_unittest_overlay_8(void)
2284 {
2285 int i, ov_id[2], ovcs_id;
2286 int overlay_nr = 8, unittest_nr = 8;
2287 const char *overlay_name;
2288 int ret;
2289
2290 /* we don't care about device state in this test */
2291
2292 EXPECT_BEGIN(KERN_INFO,
2293 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2294
2295 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2296
2297 ret = overlay_data_apply(overlay_name, &ovcs_id);
2298 if (!ret)
2299 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2300
2301 EXPECT_END(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 if (!ret)
2305 return;
2306
2307 ov_id[0] = ovcs_id;
2308 of_unittest_track_overlay(ov_id[0]);
2309
2310 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2311
2312 EXPECT_BEGIN(KERN_INFO,
2313 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2314
2315 /* apply the overlays */
2316 ret = overlay_data_apply(overlay_name, &ovcs_id);
2317
2318 EXPECT_END(KERN_INFO,
2319 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2320
2321 if (!ret) {
2322 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2323 return;
2324 }
2325
2326 ov_id[1] = ovcs_id;
2327 of_unittest_track_overlay(ov_id[1]);
2328
2329 /* now try to remove first overlay (it should fail) */
2330 ovcs_id = ov_id[0];
2331
2332 EXPECT_BEGIN(KERN_INFO,
2333 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2334
2335 EXPECT_BEGIN(KERN_INFO,
2336 "OF: overlay: overlay #6 is not topmost");
2337
2338 ret = of_overlay_remove(&ovcs_id);
2339
2340 EXPECT_END(KERN_INFO,
2341 "OF: overlay: overlay #6 is not topmost");
2342
2343 EXPECT_END(KERN_INFO,
2344 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2345
2346 if (!ret) {
2347 unittest(0, "%s was destroyed @\"%s\"\n",
2348 overlay_name_from_nr(overlay_nr + 0),
2349 unittest_path(unittest_nr,
2350 PDEV_OVERLAY));
2351 return;
2352 }
2353
2354 /* removing them in order should work */
2355 for (i = 1; i >= 0; i--) {
2356 ovcs_id = ov_id[i];
2357 if (of_overlay_remove(&ovcs_id)) {
2358 unittest(0, "%s not destroyed @\"%s\"\n",
2359 overlay_name_from_nr(overlay_nr + i),
2360 unittest_path(unittest_nr,
2361 PDEV_OVERLAY));
2362 return;
2363 }
2364 of_unittest_untrack_overlay(ov_id[i]);
2365 }
2366
2367 unittest(1, "overlay test %d passed\n", 8);
2368 }
2369
2370 /* test insertion of a bus with parent devices */
2371 static void __init of_unittest_overlay_10(void)
2372 {
2373 int ret;
2374 char *child_path;
2375
2376 /* device should disable */
2377 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2378
2379 if (unittest(ret == 0,
2380 "overlay test %d failed; overlay application\n", 10))
2381 return;
2382
2383 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2384 unittest_path(10, PDEV_OVERLAY));
2385 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2386 return;
2387
2388 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2389 kfree(child_path);
2390
2391 unittest(ret, "overlay test %d failed; no child device\n", 10);
2392 }
2393
2394 /* test insertion of a bus with parent devices (and revert) */
2395 static void __init of_unittest_overlay_11(void)
2396 {
2397 int ret;
2398
2399 /* device should disable */
2400 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2401 PDEV_OVERLAY);
2402
2403 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2404 }
2405
2406 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2407
2408 struct unittest_i2c_bus_data {
2409 struct platform_device *pdev;
2410 struct i2c_adapter adap;
2411 };
2412
2413 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2414 struct i2c_msg *msgs, int num)
2415 {
2416 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2417
2418 (void)std;
2419
2420 return num;
2421 }
2422
2423 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2424 {
2425 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2426 }
2427
2428 static const struct i2c_algorithm unittest_i2c_algo = {
2429 .master_xfer = unittest_i2c_master_xfer,
2430 .functionality = unittest_i2c_functionality,
2431 };
2432
2433 static int unittest_i2c_bus_probe(struct platform_device *pdev)
2434 {
2435 struct device *dev = &pdev->dev;
2436 struct device_node *np = dev->of_node;
2437 struct unittest_i2c_bus_data *std;
2438 struct i2c_adapter *adap;
2439 int ret;
2440
2441 if (np == NULL) {
2442 dev_err(dev, "No OF data for device\n");
2443 return -EINVAL;
2444
2445 }
2446
2447 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2448
2449 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2450 if (!std)
2451 return -ENOMEM;
2452
2453 /* link them together */
2454 std->pdev = pdev;
2455 platform_set_drvdata(pdev, std);
2456
2457 adap = &std->adap;
2458 i2c_set_adapdata(adap, std);
2459 adap->nr = -1;
2460 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2461 adap->class = I2C_CLASS_DEPRECATED;
2462 adap->algo = &unittest_i2c_algo;
2463 adap->dev.parent = dev;
2464 adap->dev.of_node = dev->of_node;
2465 adap->timeout = 5 * HZ;
2466 adap->retries = 3;
2467
2468 ret = i2c_add_numbered_adapter(adap);
2469 if (ret != 0) {
2470 dev_err(dev, "Failed to add I2C adapter\n");
2471 return ret;
2472 }
2473
2474 return 0;
2475 }
2476
2477 static int unittest_i2c_bus_remove(struct platform_device *pdev)
2478 {
2479 struct device *dev = &pdev->dev;
2480 struct device_node *np = dev->of_node;
2481 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2482
2483 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2484 i2c_del_adapter(&std->adap);
2485
2486 return 0;
2487 }
2488
2489 static const struct of_device_id unittest_i2c_bus_match[] = {
2490 { .compatible = "unittest-i2c-bus", },
2491 {},
2492 };
2493
2494 static struct platform_driver unittest_i2c_bus_driver = {
2495 .probe = unittest_i2c_bus_probe,
2496 .remove = unittest_i2c_bus_remove,
2497 .driver = {
2498 .name = "unittest-i2c-bus",
2499 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2500 },
2501 };
2502
2503 static int unittest_i2c_dev_probe(struct i2c_client *client,
2504 const struct i2c_device_id *id)
2505 {
2506 struct device *dev = &client->dev;
2507 struct device_node *np = client->dev.of_node;
2508
2509 if (!np) {
2510 dev_err(dev, "No OF node\n");
2511 return -EINVAL;
2512 }
2513
2514 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2515
2516 return 0;
2517 };
2518
2519 static int unittest_i2c_dev_remove(struct i2c_client *client)
2520 {
2521 struct device *dev = &client->dev;
2522 struct device_node *np = client->dev.of_node;
2523
2524 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2525 return 0;
2526 }
2527
2528 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2529 { .name = "unittest-i2c-dev" },
2530 { }
2531 };
2532
2533 static struct i2c_driver unittest_i2c_dev_driver = {
2534 .driver = {
2535 .name = "unittest-i2c-dev",
2536 },
2537 .probe = unittest_i2c_dev_probe,
2538 .remove = unittest_i2c_dev_remove,
2539 .id_table = unittest_i2c_dev_id,
2540 };
2541
2542 #if IS_BUILTIN(CONFIG_I2C_MUX)
2543
2544 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2545 {
2546 return 0;
2547 }
2548
2549 static int unittest_i2c_mux_probe(struct i2c_client *client,
2550 const struct i2c_device_id *id)
2551 {
2552 int i, nchans;
2553 struct device *dev = &client->dev;
2554 struct i2c_adapter *adap = client->adapter;
2555 struct device_node *np = client->dev.of_node, *child;
2556 struct i2c_mux_core *muxc;
2557 u32 reg, max_reg;
2558
2559 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2560
2561 if (!np) {
2562 dev_err(dev, "No OF node\n");
2563 return -EINVAL;
2564 }
2565
2566 max_reg = (u32)-1;
2567 for_each_child_of_node(np, child) {
2568 if (of_property_read_u32(child, "reg", &reg))
2569 continue;
2570 if (max_reg == (u32)-1 || reg > max_reg)
2571 max_reg = reg;
2572 }
2573 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2574 if (nchans == 0) {
2575 dev_err(dev, "No channels\n");
2576 return -EINVAL;
2577 }
2578
2579 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2580 unittest_i2c_mux_select_chan, NULL);
2581 if (!muxc)
2582 return -ENOMEM;
2583 for (i = 0; i < nchans; i++) {
2584 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2585 dev_err(dev, "Failed to register mux #%d\n", i);
2586 i2c_mux_del_adapters(muxc);
2587 return -ENODEV;
2588 }
2589 }
2590
2591 i2c_set_clientdata(client, muxc);
2592
2593 return 0;
2594 };
2595
2596 static int unittest_i2c_mux_remove(struct i2c_client *client)
2597 {
2598 struct device *dev = &client->dev;
2599 struct device_node *np = client->dev.of_node;
2600 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2601
2602 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2603 i2c_mux_del_adapters(muxc);
2604 return 0;
2605 }
2606
2607 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2608 { .name = "unittest-i2c-mux" },
2609 { }
2610 };
2611
2612 static struct i2c_driver unittest_i2c_mux_driver = {
2613 .driver = {
2614 .name = "unittest-i2c-mux",
2615 },
2616 .probe = unittest_i2c_mux_probe,
2617 .remove = unittest_i2c_mux_remove,
2618 .id_table = unittest_i2c_mux_id,
2619 };
2620
2621 #endif
2622
2623 static int of_unittest_overlay_i2c_init(void)
2624 {
2625 int ret;
2626
2627 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2628 if (unittest(ret == 0,
2629 "could not register unittest i2c device driver\n"))
2630 return ret;
2631
2632 ret = platform_driver_register(&unittest_i2c_bus_driver);
2633
2634 if (unittest(ret == 0,
2635 "could not register unittest i2c bus driver\n"))
2636 return ret;
2637
2638 #if IS_BUILTIN(CONFIG_I2C_MUX)
2639
2640 EXPECT_BEGIN(KERN_INFO,
2641 "i2c i2c-1: Added multiplexed i2c bus 2");
2642
2643 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2644
2645 EXPECT_END(KERN_INFO,
2646 "i2c i2c-1: Added multiplexed i2c bus 2");
2647
2648 if (unittest(ret == 0,
2649 "could not register unittest i2c mux driver\n"))
2650 return ret;
2651 #endif
2652
2653 return 0;
2654 }
2655
2656 static void of_unittest_overlay_i2c_cleanup(void)
2657 {
2658 #if IS_BUILTIN(CONFIG_I2C_MUX)
2659 i2c_del_driver(&unittest_i2c_mux_driver);
2660 #endif
2661 platform_driver_unregister(&unittest_i2c_bus_driver);
2662 i2c_del_driver(&unittest_i2c_dev_driver);
2663 }
2664
2665 static void __init of_unittest_overlay_i2c_12(void)
2666 {
2667 int ret;
2668
2669 /* device should enable */
2670 EXPECT_BEGIN(KERN_INFO,
2671 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2672
2673 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2674
2675 EXPECT_END(KERN_INFO,
2676 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2677
2678 if (ret)
2679 return;
2680
2681 unittest(1, "overlay test %d passed\n", 12);
2682 }
2683
2684 /* test deactivation of device */
2685 static void __init of_unittest_overlay_i2c_13(void)
2686 {
2687 int ret;
2688
2689 EXPECT_BEGIN(KERN_INFO,
2690 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2691
2692 /* device should disable */
2693 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2694
2695 EXPECT_END(KERN_INFO,
2696 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2697
2698 if (ret)
2699 return;
2700
2701 unittest(1, "overlay test %d passed\n", 13);
2702 }
2703
2704 /* just check for i2c mux existence */
2705 static void of_unittest_overlay_i2c_14(void)
2706 {
2707 }
2708
2709 static void __init of_unittest_overlay_i2c_15(void)
2710 {
2711 int ret;
2712
2713 /* device should enable */
2714 EXPECT_BEGIN(KERN_INFO,
2715 "i2c i2c-1: Added multiplexed i2c bus 3");
2716
2717 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2718
2719 EXPECT_END(KERN_INFO,
2720 "i2c i2c-1: Added multiplexed i2c bus 3");
2721
2722 if (ret)
2723 return;
2724
2725 unittest(1, "overlay test %d passed\n", 15);
2726 }
2727
2728 #else
2729
2730 static inline void of_unittest_overlay_i2c_14(void) { }
2731 static inline void of_unittest_overlay_i2c_15(void) { }
2732
2733 #endif
2734
2735 static void __init of_unittest_overlay(void)
2736 {
2737 struct device_node *bus_np = NULL;
2738
2739 if (platform_driver_register(&unittest_driver)) {
2740 unittest(0, "could not register unittest driver\n");
2741 goto out;
2742 }
2743
2744 bus_np = of_find_node_by_path(bus_path);
2745 if (bus_np == NULL) {
2746 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2747 goto out;
2748 }
2749
2750 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2751 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2752 goto out;
2753 }
2754
2755 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2756 unittest(0, "could not find unittest0 @ \"%s\"\n",
2757 unittest_path(100, PDEV_OVERLAY));
2758 goto out;
2759 }
2760
2761 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2762 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2763 unittest_path(101, PDEV_OVERLAY));
2764 goto out;
2765 }
2766
2767 unittest(1, "basic infrastructure of overlays passed");
2768
2769 /* tests in sequence */
2770 of_unittest_overlay_0();
2771 of_unittest_overlay_1();
2772 of_unittest_overlay_2();
2773 of_unittest_overlay_3();
2774 of_unittest_overlay_4();
2775 of_unittest_overlay_5();
2776 of_unittest_overlay_6();
2777 of_unittest_overlay_8();
2778
2779 of_unittest_overlay_10();
2780 of_unittest_overlay_11();
2781
2782 #if IS_BUILTIN(CONFIG_I2C)
2783 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2784 goto out;
2785
2786 of_unittest_overlay_i2c_12();
2787 of_unittest_overlay_i2c_13();
2788 of_unittest_overlay_i2c_14();
2789 of_unittest_overlay_i2c_15();
2790
2791 of_unittest_overlay_i2c_cleanup();
2792 #endif
2793
2794 of_unittest_overlay_gpio();
2795
2796 of_unittest_destroy_tracked_overlays();
2797
2798 out:
2799 of_node_put(bus_np);
2800 }
2801
2802 #else
2803 static inline void __init of_unittest_overlay(void) { }
2804 #endif
2805
2806 #ifdef CONFIG_OF_OVERLAY
2807
2808 /*
2809 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2810 * in scripts/Makefile.lib
2811 */
2812
2813 #define OVERLAY_INFO_EXTERN(name) \
2814 extern uint8_t __dtb_##name##_begin[]; \
2815 extern uint8_t __dtb_##name##_end[]
2816
2817 #define OVERLAY_INFO(overlay_name, expected) \
2818 { .dtb_begin = __dtb_##overlay_name##_begin, \
2819 .dtb_end = __dtb_##overlay_name##_end, \
2820 .expected_result = expected, \
2821 .name = #overlay_name, \
2822 }
2823
2824 struct overlay_info {
2825 uint8_t *dtb_begin;
2826 uint8_t *dtb_end;
2827 int expected_result;
2828 int overlay_id;
2829 char *name;
2830 };
2831
2832 OVERLAY_INFO_EXTERN(overlay_base);
2833 OVERLAY_INFO_EXTERN(overlay);
2834 OVERLAY_INFO_EXTERN(overlay_0);
2835 OVERLAY_INFO_EXTERN(overlay_1);
2836 OVERLAY_INFO_EXTERN(overlay_2);
2837 OVERLAY_INFO_EXTERN(overlay_3);
2838 OVERLAY_INFO_EXTERN(overlay_4);
2839 OVERLAY_INFO_EXTERN(overlay_5);
2840 OVERLAY_INFO_EXTERN(overlay_6);
2841 OVERLAY_INFO_EXTERN(overlay_7);
2842 OVERLAY_INFO_EXTERN(overlay_8);
2843 OVERLAY_INFO_EXTERN(overlay_9);
2844 OVERLAY_INFO_EXTERN(overlay_10);
2845 OVERLAY_INFO_EXTERN(overlay_11);
2846 OVERLAY_INFO_EXTERN(overlay_12);
2847 OVERLAY_INFO_EXTERN(overlay_13);
2848 OVERLAY_INFO_EXTERN(overlay_15);
2849 OVERLAY_INFO_EXTERN(overlay_gpio_01);
2850 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2851 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2852 OVERLAY_INFO_EXTERN(overlay_gpio_03);
2853 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2854 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2855 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2856 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2857 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2858 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2859
2860 /* entries found by name */
2861 static struct overlay_info overlays[] = {
2862 OVERLAY_INFO(overlay_base, -9999),
2863 OVERLAY_INFO(overlay, 0),
2864 OVERLAY_INFO(overlay_0, 0),
2865 OVERLAY_INFO(overlay_1, 0),
2866 OVERLAY_INFO(overlay_2, 0),
2867 OVERLAY_INFO(overlay_3, 0),
2868 OVERLAY_INFO(overlay_4, 0),
2869 OVERLAY_INFO(overlay_5, 0),
2870 OVERLAY_INFO(overlay_6, 0),
2871 OVERLAY_INFO(overlay_7, 0),
2872 OVERLAY_INFO(overlay_8, 0),
2873 OVERLAY_INFO(overlay_9, 0),
2874 OVERLAY_INFO(overlay_10, 0),
2875 OVERLAY_INFO(overlay_11, 0),
2876 OVERLAY_INFO(overlay_12, 0),
2877 OVERLAY_INFO(overlay_13, 0),
2878 OVERLAY_INFO(overlay_15, 0),
2879 OVERLAY_INFO(overlay_gpio_01, 0),
2880 OVERLAY_INFO(overlay_gpio_02a, 0),
2881 OVERLAY_INFO(overlay_gpio_02b, 0),
2882 OVERLAY_INFO(overlay_gpio_03, 0),
2883 OVERLAY_INFO(overlay_gpio_04a, 0),
2884 OVERLAY_INFO(overlay_gpio_04b, 0),
2885 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2886 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2887 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2888 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2889 /* end marker */
2890 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2891 };
2892
2893 static struct device_node *overlay_base_root;
2894
2895 static void * __init dt_alloc_memory(u64 size, u64 align)
2896 {
2897 void *ptr = memblock_alloc(size, align);
2898
2899 if (!ptr)
2900 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2901 __func__, size, align);
2902
2903 return ptr;
2904 }
2905
2906 /*
2907 * Create base device tree for the overlay unittest.
2908 *
2909 * This is called from very early boot code.
2910 *
2911 * Do as much as possible the same way as done in __unflatten_device_tree
2912 * and other early boot steps for the normal FDT so that the overlay base
2913 * unflattened tree will have the same characteristics as the real tree
2914 * (such as having memory allocated by the early allocator). The goal
2915 * is to test "the real thing" as much as possible, and test "test setup
2916 * code" as little as possible.
2917 *
2918 * Have to stop before resolving phandles, because that uses kmalloc.
2919 */
2920 void __init unittest_unflatten_overlay_base(void)
2921 {
2922 struct overlay_info *info;
2923 u32 data_size;
2924 void *new_fdt;
2925 u32 size;
2926 int found = 0;
2927 const char *overlay_name = "overlay_base";
2928
2929 for (info = overlays; info && info->name; info++) {
2930 if (!strcmp(overlay_name, info->name)) {
2931 found = 1;
2932 break;
2933 }
2934 }
2935 if (!found) {
2936 pr_err("no overlay data for %s\n", overlay_name);
2937 return;
2938 }
2939
2940 info = &overlays[0];
2941
2942 if (info->expected_result != -9999) {
2943 pr_err("No dtb 'overlay_base' to attach\n");
2944 return;
2945 }
2946
2947 data_size = info->dtb_end - info->dtb_begin;
2948 if (!data_size) {
2949 pr_err("No dtb 'overlay_base' to attach\n");
2950 return;
2951 }
2952
2953 size = fdt_totalsize(info->dtb_begin);
2954 if (size != data_size) {
2955 pr_err("dtb 'overlay_base' header totalsize != actual size");
2956 return;
2957 }
2958
2959 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2960 if (!new_fdt) {
2961 pr_err("alloc for dtb 'overlay_base' failed");
2962 return;
2963 }
2964
2965 memcpy(new_fdt, info->dtb_begin, size);
2966
2967 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2968 dt_alloc_memory, true);
2969 }
2970
2971 /*
2972 * The purpose of of_unittest_overlay_data_add is to add an
2973 * overlay in the normal fashion. This is a test of the whole
2974 * picture, instead of testing individual elements.
2975 *
2976 * A secondary purpose is to be able to verify that the contents of
2977 * /proc/device-tree/ contains the updated structure and values from
2978 * the overlay. That must be verified separately in user space.
2979 *
2980 * Return 0 on unexpected error.
2981 */
2982 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2983 {
2984 struct overlay_info *info;
2985 int found = 0;
2986 int ret;
2987 u32 size;
2988
2989 for (info = overlays; info && info->name; info++) {
2990 if (!strcmp(overlay_name, info->name)) {
2991 found = 1;
2992 break;
2993 }
2994 }
2995 if (!found) {
2996 pr_err("no overlay data for %s\n", overlay_name);
2997 return 0;
2998 }
2999
3000 size = info->dtb_end - info->dtb_begin;
3001 if (!size)
3002 pr_err("no overlay data for %s\n", overlay_name);
3003
3004 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3005 if (overlay_id)
3006 *overlay_id = info->overlay_id;
3007 if (ret < 0)
3008 goto out;
3009
3010 pr_debug("%s applied\n", overlay_name);
3011
3012 out:
3013 if (ret != info->expected_result)
3014 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3015 info->expected_result, ret, overlay_name);
3016
3017 return (ret == info->expected_result);
3018 }
3019
3020 /*
3021 * The purpose of of_unittest_overlay_high_level is to add an overlay
3022 * in the normal fashion. This is a test of the whole picture,
3023 * instead of individual elements.
3024 *
3025 * The first part of the function is _not_ normal overlay usage; it is
3026 * finishing splicing the base overlay device tree into the live tree.
3027 */
3028 static __init void of_unittest_overlay_high_level(void)
3029 {
3030 struct device_node *last_sibling;
3031 struct device_node *np;
3032 struct device_node *of_symbols;
3033 struct device_node *overlay_base_symbols;
3034 struct device_node **pprev;
3035 struct property *prop;
3036 int ret;
3037
3038 if (!overlay_base_root) {
3039 unittest(0, "overlay_base_root not initialized\n");
3040 return;
3041 }
3042
3043 /*
3044 * Could not fixup phandles in unittest_unflatten_overlay_base()
3045 * because kmalloc() was not yet available.
3046 */
3047 of_overlay_mutex_lock();
3048 of_resolve_phandles(overlay_base_root);
3049 of_overlay_mutex_unlock();
3050
3051
3052 /*
3053 * do not allow overlay_base to duplicate any node already in
3054 * tree, this greatly simplifies the code
3055 */
3056
3057 /*
3058 * remove overlay_base_root node "__local_fixups", after
3059 * being used by of_resolve_phandles()
3060 */
3061 pprev = &overlay_base_root->child;
3062 for (np = overlay_base_root->child; np; np = np->sibling) {
3063 if (of_node_name_eq(np, "__local_fixups__")) {
3064 *pprev = np->sibling;
3065 break;
3066 }
3067 pprev = &np->sibling;
3068 }
3069
3070 /* remove overlay_base_root node "__symbols__" if in live tree */
3071 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3072 if (of_symbols) {
3073 /* will have to graft properties from node into live tree */
3074 pprev = &overlay_base_root->child;
3075 for (np = overlay_base_root->child; np; np = np->sibling) {
3076 if (of_node_name_eq(np, "__symbols__")) {
3077 overlay_base_symbols = np;
3078 *pprev = np->sibling;
3079 break;
3080 }
3081 pprev = &np->sibling;
3082 }
3083 }
3084
3085 for_each_child_of_node(overlay_base_root, np) {
3086 struct device_node *base_child;
3087 for_each_child_of_node(of_root, base_child) {
3088 if (!strcmp(np->full_name, base_child->full_name)) {
3089 unittest(0, "illegal node name in overlay_base %pOFn",
3090 np);
3091 return;
3092 }
3093 }
3094 }
3095
3096 /*
3097 * overlay 'overlay_base' is not allowed to have root
3098 * properties, so only need to splice nodes into main device tree.
3099 *
3100 * root node of *overlay_base_root will not be freed, it is lost
3101 * memory.
3102 */
3103
3104 for (np = overlay_base_root->child; np; np = np->sibling)
3105 np->parent = of_root;
3106
3107 mutex_lock(&of_mutex);
3108
3109 for (last_sibling = np = of_root->child; np; np = np->sibling)
3110 last_sibling = np;
3111
3112 if (last_sibling)
3113 last_sibling->sibling = overlay_base_root->child;
3114 else
3115 of_root->child = overlay_base_root->child;
3116
3117 for_each_of_allnodes_from(overlay_base_root, np)
3118 __of_attach_node_sysfs(np);
3119
3120 if (of_symbols) {
3121 struct property *new_prop;
3122 for_each_property_of_node(overlay_base_symbols, prop) {
3123
3124 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3125 if (!new_prop) {
3126 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3127 prop->name);
3128 goto err_unlock;
3129 }
3130 if (__of_add_property(of_symbols, new_prop)) {
3131 kfree(new_prop->name);
3132 kfree(new_prop->value);
3133 kfree(new_prop);
3134 /* "name" auto-generated by unflatten */
3135 if (!strcmp(prop->name, "name"))
3136 continue;
3137 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3138 prop->name);
3139 goto err_unlock;
3140 }
3141 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3142 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3143 prop->name);
3144 goto err_unlock;
3145 }
3146 }
3147 }
3148
3149 mutex_unlock(&of_mutex);
3150
3151
3152 /* now do the normal overlay usage test */
3153
3154 EXPECT_BEGIN(KERN_ERR,
3155 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3156 EXPECT_BEGIN(KERN_ERR,
3157 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3158 EXPECT_BEGIN(KERN_ERR,
3159 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3160 EXPECT_BEGIN(KERN_ERR,
3161 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3162 EXPECT_BEGIN(KERN_ERR,
3163 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3164 EXPECT_BEGIN(KERN_ERR,
3165 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3166 EXPECT_BEGIN(KERN_ERR,
3167 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3168 EXPECT_BEGIN(KERN_ERR,
3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3170 EXPECT_BEGIN(KERN_ERR,
3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3172 EXPECT_BEGIN(KERN_ERR,
3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3174 EXPECT_BEGIN(KERN_ERR,
3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3176
3177 ret = overlay_data_apply("overlay", NULL);
3178
3179 EXPECT_END(KERN_ERR,
3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3181 EXPECT_END(KERN_ERR,
3182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3183 EXPECT_END(KERN_ERR,
3184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3185 EXPECT_END(KERN_ERR,
3186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3187 EXPECT_END(KERN_ERR,
3188 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3189 EXPECT_END(KERN_ERR,
3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3191 EXPECT_END(KERN_ERR,
3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3193 EXPECT_END(KERN_ERR,
3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3195 EXPECT_END(KERN_ERR,
3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3197 EXPECT_END(KERN_ERR,
3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3199 EXPECT_END(KERN_ERR,
3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3201
3202 unittest(ret, "Adding overlay 'overlay' failed\n");
3203
3204 EXPECT_BEGIN(KERN_ERR,
3205 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3206 EXPECT_BEGIN(KERN_ERR,
3207 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3208
3209 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3210 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3211
3212 EXPECT_END(KERN_ERR,
3213 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3214 EXPECT_END(KERN_ERR,
3215 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3216
3217 EXPECT_BEGIN(KERN_ERR,
3218 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3219 EXPECT_BEGIN(KERN_ERR,
3220 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3221 EXPECT_BEGIN(KERN_ERR,
3222 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3223
3224 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3225 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3226
3227 EXPECT_END(KERN_ERR,
3228 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3229 EXPECT_END(KERN_ERR,
3230 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3231 EXPECT_END(KERN_ERR,
3232 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3233
3234 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3235 "Adding overlay 'overlay_bad_phandle' failed\n");
3236
3237 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3238 "Adding overlay 'overlay_bad_symbol' failed\n");
3239
3240 return;
3241
3242 err_unlock:
3243 mutex_unlock(&of_mutex);
3244 }
3245
3246 #else
3247
3248 static inline __init void of_unittest_overlay_high_level(void) {}
3249
3250 #endif
3251
3252 static int __init of_unittest(void)
3253 {
3254 struct device_node *np;
3255 int res;
3256
3257 pr_info("start of unittest - you will see error messages\n");
3258
3259 /* adding data for unittest */
3260
3261 if (IS_ENABLED(CONFIG_UML))
3262 unittest_unflatten_overlay_base();
3263
3264 res = unittest_data_add();
3265 if (res)
3266 return res;
3267 if (!of_aliases)
3268 of_aliases = of_find_node_by_path("/aliases");
3269
3270 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3271 if (!np) {
3272 pr_info("No testcase data in device tree; not running tests\n");
3273 return 0;
3274 }
3275 of_node_put(np);
3276
3277 of_unittest_check_tree_linkage();
3278 of_unittest_check_phandles();
3279 of_unittest_find_node_by_name();
3280 of_unittest_dynamic();
3281 of_unittest_parse_phandle_with_args();
3282 of_unittest_parse_phandle_with_args_map();
3283 of_unittest_printf();
3284 of_unittest_property_string();
3285 of_unittest_property_copy();
3286 of_unittest_changeset();
3287 of_unittest_parse_interrupts();
3288 of_unittest_parse_interrupts_extended();
3289 of_unittest_dma_get_max_cpu_address();
3290 of_unittest_parse_dma_ranges();
3291 of_unittest_pci_dma_ranges();
3292 of_unittest_match_node();
3293 of_unittest_platform_populate();
3294 of_unittest_overlay();
3295
3296 /* Double check linkage after removing testcase data */
3297 of_unittest_check_tree_linkage();
3298
3299 of_unittest_overlay_high_level();
3300
3301 pr_info("end of unittest - %i passed, %i failed\n",
3302 unittest_results.passed, unittest_results.failed);
3303
3304 return 0;
3305 }
3306 late_initcall(of_unittest);
Linux with added FPC-III support