1
2
3
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>
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#include <linux/kernel.h>
26
27#include <linux/i2c.h>
28#include <linux/i2c-mux.h>
29#include <linux/gpio/driver.h>
30
31#include <linux/bitops.h>
32
33#include "of_private.h"
34
35static struct unittest_results {
36 int passed;
37 int failed;
38} unittest_results;
39
40#define unittest(result, fmt, ...) ({ \
41 bool failed = !(result); \
42 if (failed) { \
43 unittest_results.failed++; \
44 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
45 } else { \
46 unittest_results.passed++; \
47 pr_debug("pass %s():%i\n", __func__, __LINE__); \
48 } \
49 failed; \
50})
51
52
53
54
55
56
57
58
59
60#define EXPECT_BEGIN(level, fmt, ...) \
61 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
62
63#define EXPECT_END(level, fmt, ...) \
64 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
65
66static void __init of_unittest_find_node_by_name(void)
67{
68 struct device_node *np;
69 const char *options, *name;
70
71 np = of_find_node_by_path("/testcase-data");
72 name = kasprintf(GFP_KERNEL, "%pOF", np);
73 unittest(np && !strcmp("/testcase-data", name),
74 "find /testcase-data failed\n");
75 of_node_put(np);
76 kfree(name);
77
78
79 np = of_find_node_by_path("/testcase-data/");
80 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
81
82 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
83 name = kasprintf(GFP_KERNEL, "%pOF", np);
84 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
85 "find /testcase-data/phandle-tests/consumer-a failed\n");
86 of_node_put(np);
87 kfree(name);
88
89 np = of_find_node_by_path("testcase-alias");
90 name = kasprintf(GFP_KERNEL, "%pOF", np);
91 unittest(np && !strcmp("/testcase-data", name),
92 "find testcase-alias failed\n");
93 of_node_put(np);
94 kfree(name);
95
96
97 np = of_find_node_by_path("testcase-alias/");
98 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
99
100 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
101 name = kasprintf(GFP_KERNEL, "%pOF", np);
102 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
103 "find testcase-alias/phandle-tests/consumer-a failed\n");
104 of_node_put(np);
105 kfree(name);
106
107 np = of_find_node_by_path("/testcase-data/missing-path");
108 unittest(!np, "non-existent path returned node %pOF\n", np);
109 of_node_put(np);
110
111 np = of_find_node_by_path("missing-alias");
112 unittest(!np, "non-existent alias returned node %pOF\n", np);
113 of_node_put(np);
114
115 np = of_find_node_by_path("testcase-alias/missing-path");
116 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
117 of_node_put(np);
118
119 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
120 unittest(np && !strcmp("testoption", options),
121 "option path test failed\n");
122 of_node_put(np);
123
124 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
125 unittest(np && !strcmp("test/option", options),
126 "option path test, subcase #1 failed\n");
127 of_node_put(np);
128
129 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
130 unittest(np && !strcmp("test/option", options),
131 "option path test, subcase #2 failed\n");
132 of_node_put(np);
133
134 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
135 unittest(np, "NULL option path test failed\n");
136 of_node_put(np);
137
138 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
139 &options);
140 unittest(np && !strcmp("testaliasoption", options),
141 "option alias path test failed\n");
142 of_node_put(np);
143
144 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
145 &options);
146 unittest(np && !strcmp("test/alias/option", options),
147 "option alias path test, subcase #1 failed\n");
148 of_node_put(np);
149
150 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
151 unittest(np, "NULL option alias path test failed\n");
152 of_node_put(np);
153
154 options = "testoption";
155 np = of_find_node_opts_by_path("testcase-alias", &options);
156 unittest(np && !options, "option clearing test failed\n");
157 of_node_put(np);
158
159 options = "testoption";
160 np = of_find_node_opts_by_path("/", &options);
161 unittest(np && !options, "option clearing root node test failed\n");
162 of_node_put(np);
163}
164
165static void __init of_unittest_dynamic(void)
166{
167 struct device_node *np;
168 struct property *prop;
169
170 np = of_find_node_by_path("/testcase-data");
171 if (!np) {
172 pr_err("missing testcase data\n");
173 return;
174 }
175
176
177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
178 if (!prop) {
179 unittest(0, "kzalloc() failed\n");
180 return;
181 }
182
183
184 prop->name = "new-property";
185 prop->value = "new-property-data";
186 prop->length = strlen(prop->value) + 1;
187 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
188
189
190 prop++;
191 prop->name = "new-property";
192 prop->value = "new-property-data-should-fail";
193 prop->length = strlen(prop->value) + 1;
194 unittest(of_add_property(np, prop) != 0,
195 "Adding an existing property should have failed\n");
196
197
198 prop->value = "modify-property-data-should-pass";
199 prop->length = strlen(prop->value) + 1;
200 unittest(of_update_property(np, prop) == 0,
201 "Updating an existing property should have passed\n");
202
203
204 prop++;
205 prop->name = "modify-property";
206 prop->value = "modify-missing-property-data-should-pass";
207 prop->length = strlen(prop->value) + 1;
208 unittest(of_update_property(np, prop) == 0,
209 "Updating a missing property should have passed\n");
210
211
212 unittest(of_remove_property(np, prop) == 0,
213 "Removing a property should have passed\n");
214
215
216 prop++;
217 prop->name = "large-property-PAGE_SIZEx8";
218 prop->length = PAGE_SIZE * 8;
219 prop->value = kzalloc(prop->length, GFP_KERNEL);
220 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
221 if (prop->value)
222 unittest(of_add_property(np, prop) == 0,
223 "Adding a large property should have passed\n");
224}
225
226static int __init of_unittest_check_node_linkage(struct device_node *np)
227{
228 struct device_node *child;
229 int count = 0, rc;
230
231 for_each_child_of_node(np, child) {
232 if (child->parent != np) {
233 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
234 child, np);
235 rc = -EINVAL;
236 goto put_child;
237 }
238
239 rc = of_unittest_check_node_linkage(child);
240 if (rc < 0)
241 goto put_child;
242 count += rc;
243 }
244
245 return count + 1;
246put_child:
247 of_node_put(child);
248 return rc;
249}
250
251static void __init of_unittest_check_tree_linkage(void)
252{
253 struct device_node *np;
254 int allnode_count = 0, child_count;
255
256 if (!of_root)
257 return;
258
259 for_each_of_allnodes(np)
260 allnode_count++;
261 child_count = of_unittest_check_node_linkage(of_root);
262
263 unittest(child_count > 0, "Device node data structure is corrupted\n");
264 unittest(child_count == allnode_count,
265 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
266 allnode_count, child_count);
267 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
268}
269
270static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
271 const char *expected)
272{
273 unsigned char *buf;
274 int buf_size;
275 int size, i;
276
277 buf_size = strlen(expected) + 10;
278 buf = kmalloc(buf_size, GFP_KERNEL);
279 if (!buf)
280 return;
281
282
283 memset(buf, 0xff, buf_size);
284 size = snprintf(buf, buf_size - 2, fmt, np);
285
286
287 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
288 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
289 fmt, expected, buf);
290
291
292 size++;
293 for (i = 0; i < 2; i++, size--) {
294
295 memset(buf, 0xff, buf_size);
296 snprintf(buf, size+1, fmt, np);
297 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
298 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
299 size, fmt, expected, buf);
300 }
301 kfree(buf);
302}
303
304static void __init of_unittest_printf(void)
305{
306 struct device_node *np;
307 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
308 char phandle_str[16] = "";
309
310 np = of_find_node_by_path(full_name);
311 if (!np) {
312 unittest(np, "testcase data missing\n");
313 return;
314 }
315
316 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
317
318 of_unittest_printf_one(np, "%pOF", full_name);
319 of_unittest_printf_one(np, "%pOFf", full_name);
320 of_unittest_printf_one(np, "%pOFn", "dev");
321 of_unittest_printf_one(np, "%2pOFn", "dev");
322 of_unittest_printf_one(np, "%5pOFn", " dev");
323 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
324 of_unittest_printf_one(np, "%pOFp", phandle_str);
325 of_unittest_printf_one(np, "%pOFP", "dev@100");
326 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
327 of_unittest_printf_one(np, "%10pOFP", " dev@100");
328 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
329 of_unittest_printf_one(of_root, "%pOFP", "/");
330 of_unittest_printf_one(np, "%pOFF", "----");
331 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
332 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
333 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
334 of_unittest_printf_one(np, "%pOFC",
335 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
336}
337
338struct node_hash {
339 struct hlist_node node;
340 struct device_node *np;
341};
342
343static DEFINE_HASHTABLE(phandle_ht, 8);
344static void __init of_unittest_check_phandles(void)
345{
346 struct device_node *np;
347 struct node_hash *nh;
348 struct hlist_node *tmp;
349 int i, dup_count = 0, phandle_count = 0;
350
351 for_each_of_allnodes(np) {
352 if (!np->phandle)
353 continue;
354
355 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
356 if (nh->np->phandle == np->phandle) {
357 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
358 np->phandle, nh->np, np);
359 dup_count++;
360 break;
361 }
362 }
363
364 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
365 if (!nh)
366 return;
367
368 nh->np = np;
369 hash_add(phandle_ht, &nh->node, np->phandle);
370 phandle_count++;
371 }
372 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
373 dup_count, phandle_count);
374
375
376 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
377 hash_del(&nh->node);
378 kfree(nh);
379 }
380}
381
382static void __init of_unittest_parse_phandle_with_args(void)
383{
384 struct device_node *np;
385 struct of_phandle_args args;
386 int i, rc;
387
388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
389 if (!np) {
390 pr_err("missing testcase data\n");
391 return;
392 }
393
394 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
395 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
396
397 for (i = 0; i < 8; i++) {
398 bool passed = true;
399
400 memset(&args, 0, sizeof(args));
401 rc = of_parse_phandle_with_args(np, "phandle-list",
402 "#phandle-cells", i, &args);
403
404
405 switch (i) {
406 case 0:
407 passed &= !rc;
408 passed &= (args.args_count == 1);
409 passed &= (args.args[0] == (i + 1));
410 break;
411 case 1:
412 passed &= !rc;
413 passed &= (args.args_count == 2);
414 passed &= (args.args[0] == (i + 1));
415 passed &= (args.args[1] == 0);
416 break;
417 case 2:
418 passed &= (rc == -ENOENT);
419 break;
420 case 3:
421 passed &= !rc;
422 passed &= (args.args_count == 3);
423 passed &= (args.args[0] == (i + 1));
424 passed &= (args.args[1] == 4);
425 passed &= (args.args[2] == 3);
426 break;
427 case 4:
428 passed &= !rc;
429 passed &= (args.args_count == 2);
430 passed &= (args.args[0] == (i + 1));
431 passed &= (args.args[1] == 100);
432 break;
433 case 5:
434 passed &= !rc;
435 passed &= (args.args_count == 0);
436 break;
437 case 6:
438 passed &= !rc;
439 passed &= (args.args_count == 1);
440 passed &= (args.args[0] == (i + 1));
441 break;
442 case 7:
443 passed &= (rc == -ENOENT);
444 break;
445 default:
446 passed = false;
447 }
448
449 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
450 i, args.np, rc);
451 }
452
453
454 memset(&args, 0, sizeof(args));
455 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
456 "#phandle-cells", 0, &args);
457 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
458 rc = of_count_phandle_with_args(np, "phandle-list-missing",
459 "#phandle-cells");
460 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
461
462
463 memset(&args, 0, sizeof(args));
464
465 EXPECT_BEGIN(KERN_INFO,
466 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
467
468 rc = of_parse_phandle_with_args(np, "phandle-list",
469 "#phandle-cells-missing", 0, &args);
470
471 EXPECT_END(KERN_INFO,
472 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
473
474 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
475
476 EXPECT_BEGIN(KERN_INFO,
477 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
478
479 rc = of_count_phandle_with_args(np, "phandle-list",
480 "#phandle-cells-missing");
481
482 EXPECT_END(KERN_INFO,
483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
484
485 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
486
487
488 memset(&args, 0, sizeof(args));
489
490 EXPECT_BEGIN(KERN_INFO,
491 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
492
493 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
494 "#phandle-cells", 0, &args);
495
496 EXPECT_END(KERN_INFO,
497 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
498
499 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
500
501 EXPECT_BEGIN(KERN_INFO,
502 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
503
504 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
505 "#phandle-cells");
506
507 EXPECT_END(KERN_INFO,
508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
509
510 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
511
512
513 memset(&args, 0, sizeof(args));
514
515 EXPECT_BEGIN(KERN_INFO,
516 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
517
518 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
519 "#phandle-cells", 1, &args);
520
521 EXPECT_END(KERN_INFO,
522 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
523
524 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
525
526 EXPECT_BEGIN(KERN_INFO,
527 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
528
529 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
530 "#phandle-cells");
531
532 EXPECT_END(KERN_INFO,
533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
534
535 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
536}
537
538static void __init of_unittest_parse_phandle_with_args_map(void)
539{
540 struct device_node *np, *p0, *p1, *p2, *p3;
541 struct of_phandle_args args;
542 int i, rc;
543
544 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
545 if (!np) {
546 pr_err("missing testcase data\n");
547 return;
548 }
549
550 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
551 if (!p0) {
552 pr_err("missing testcase data\n");
553 return;
554 }
555
556 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
557 if (!p1) {
558 pr_err("missing testcase data\n");
559 return;
560 }
561
562 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
563 if (!p2) {
564 pr_err("missing testcase data\n");
565 return;
566 }
567
568 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
569 if (!p3) {
570 pr_err("missing testcase data\n");
571 return;
572 }
573
574 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
575 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
576
577 for (i = 0; i < 8; i++) {
578 bool passed = true;
579
580 memset(&args, 0, sizeof(args));
581 rc = of_parse_phandle_with_args_map(np, "phandle-list",
582 "phandle", i, &args);
583
584
585 switch (i) {
586 case 0:
587 passed &= !rc;
588 passed &= (args.np == p1);
589 passed &= (args.args_count == 1);
590 passed &= (args.args[0] == 1);
591 break;
592 case 1:
593 passed &= !rc;
594 passed &= (args.np == p3);
595 passed &= (args.args_count == 3);
596 passed &= (args.args[0] == 2);
597 passed &= (args.args[1] == 5);
598 passed &= (args.args[2] == 3);
599 break;
600 case 2:
601 passed &= (rc == -ENOENT);
602 break;
603 case 3:
604 passed &= !rc;
605 passed &= (args.np == p0);
606 passed &= (args.args_count == 0);
607 break;
608 case 4:
609 passed &= !rc;
610 passed &= (args.np == p1);
611 passed &= (args.args_count == 1);
612 passed &= (args.args[0] == 3);
613 break;
614 case 5:
615 passed &= !rc;
616 passed &= (args.np == p0);
617 passed &= (args.args_count == 0);
618 break;
619 case 6:
620 passed &= !rc;
621 passed &= (args.np == p2);
622 passed &= (args.args_count == 2);
623 passed &= (args.args[0] == 15);
624 passed &= (args.args[1] == 0x20);
625 break;
626 case 7:
627 passed &= (rc == -ENOENT);
628 break;
629 default:
630 passed = false;
631 }
632
633 unittest(passed, "index %i - data error on node %s rc=%i\n",
634 i, args.np->full_name, rc);
635 }
636
637
638 memset(&args, 0, sizeof(args));
639 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
640 "phandle", 0, &args);
641 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
642
643
644 memset(&args, 0, sizeof(args));
645
646 EXPECT_BEGIN(KERN_INFO,
647 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
648
649 rc = of_parse_phandle_with_args_map(np, "phandle-list",
650 "phandle-missing", 0, &args);
651 EXPECT_END(KERN_INFO,
652 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
653
654 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
655
656
657 memset(&args, 0, sizeof(args));
658
659 EXPECT_BEGIN(KERN_INFO,
660 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
661
662 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
663 "phandle", 0, &args);
664 EXPECT_END(KERN_INFO,
665 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
666
667 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
668
669
670 memset(&args, 0, sizeof(args));
671
672 EXPECT_BEGIN(KERN_INFO,
673 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
674
675 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
676 "phandle", 1, &args);
677 EXPECT_END(KERN_INFO,
678 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
679
680 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
681}
682
683static void __init of_unittest_property_string(void)
684{
685 const char *strings[4];
686 struct device_node *np;
687 int rc;
688
689 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
690 if (!np) {
691 pr_err("No testcase data in device tree\n");
692 return;
693 }
694
695 rc = of_property_match_string(np, "phandle-list-names", "first");
696 unittest(rc == 0, "first expected:0 got:%i\n", rc);
697 rc = of_property_match_string(np, "phandle-list-names", "second");
698 unittest(rc == 1, "second expected:1 got:%i\n", rc);
699 rc = of_property_match_string(np, "phandle-list-names", "third");
700 unittest(rc == 2, "third expected:2 got:%i\n", rc);
701 rc = of_property_match_string(np, "phandle-list-names", "fourth");
702 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
703 rc = of_property_match_string(np, "missing-property", "blah");
704 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
705 rc = of_property_match_string(np, "empty-property", "blah");
706 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
707 rc = of_property_match_string(np, "unterminated-string", "blah");
708 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
709
710
711 rc = of_property_count_strings(np, "string-property");
712 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
713 rc = of_property_count_strings(np, "phandle-list-names");
714 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
715 rc = of_property_count_strings(np, "unterminated-string");
716 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
717 rc = of_property_count_strings(np, "unterminated-string-list");
718 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
719
720
721 rc = of_property_read_string_index(np, "string-property", 0, strings);
722 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
723 strings[0] = NULL;
724 rc = of_property_read_string_index(np, "string-property", 1, strings);
725 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
726 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
727 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
728 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
729 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
730 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
731 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
732 strings[0] = NULL;
733 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
734 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
735 strings[0] = NULL;
736 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
737 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
738 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
739 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
740 strings[0] = NULL;
741 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings);
742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
743 strings[1] = NULL;
744
745
746 rc = of_property_read_string_array(np, "string-property", strings, 4);
747 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
748 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
749 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
750 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
751 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
752
753 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
754 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
755
756 strings[2] = NULL;
757 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
758 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
759 strings[1] = NULL;
760 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
761 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
762}
763
764#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
765 (p1)->value && (p2)->value && \
766 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
767 !strcmp((p1)->name, (p2)->name))
768static void __init of_unittest_property_copy(void)
769{
770#ifdef CONFIG_OF_DYNAMIC
771 struct property p1 = { .name = "p1", .length = 0, .value = "" };
772 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
773 struct property *new;
774
775 new = __of_prop_dup(&p1, GFP_KERNEL);
776 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
777 kfree(new->value);
778 kfree(new->name);
779 kfree(new);
780
781 new = __of_prop_dup(&p2, GFP_KERNEL);
782 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
783 kfree(new->value);
784 kfree(new->name);
785 kfree(new);
786#endif
787}
788
789static void __init of_unittest_changeset(void)
790{
791#ifdef CONFIG_OF_DYNAMIC
792 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
793 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
794 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
795 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
796 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
797 struct property *ppremove;
798 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np;
799 struct of_changeset chgset;
800
801 n1 = __of_node_dup(NULL, "n1");
802 unittest(n1, "testcase setup failure\n");
803
804 n2 = __of_node_dup(NULL, "n2");
805 unittest(n2, "testcase setup failure\n");
806
807 n21 = __of_node_dup(NULL, "n21");
808 unittest(n21, "testcase setup failure %p\n", n21);
809
810 nchangeset = of_find_node_by_path("/testcase-data/changeset");
811 nremove = of_get_child_by_name(nchangeset, "node-remove");
812 unittest(nremove, "testcase setup failure\n");
813
814 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
815 unittest(ppadd, "testcase setup failure\n");
816
817 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
818 unittest(ppname_n1, "testcase setup failure\n");
819
820 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
821 unittest(ppname_n2, "testcase setup failure\n");
822
823 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
824 unittest(ppname_n21, "testcase setup failure\n");
825
826 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
827 unittest(ppupdate, "testcase setup failure\n");
828
829 parent = nchangeset;
830 n1->parent = parent;
831 n2->parent = parent;
832 n21->parent = n2;
833
834 ppremove = of_find_property(parent, "prop-remove", NULL);
835 unittest(ppremove, "failed to find removal prop");
836
837 of_changeset_init(&chgset);
838
839 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
840 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
841
842 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
843 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
844
845 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
846 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
847
848 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
849
850 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
851 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
852 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
853
854 unittest(!of_changeset_apply(&chgset), "apply failed\n");
855
856 of_node_put(nchangeset);
857
858
859 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
860 "'%pOF' not added\n", n21);
861 of_node_put(np);
862
863 unittest(!of_changeset_revert(&chgset), "revert failed\n");
864
865 of_changeset_destroy(&chgset);
866
867 of_node_put(n1);
868 of_node_put(n2);
869 of_node_put(n21);
870#endif
871}
872
873static void __init of_unittest_dma_get_max_cpu_address(void)
874{
875 struct device_node *np;
876 phys_addr_t cpu_addr;
877
878 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
879 return;
880
881 np = of_find_node_by_path("/testcase-data/address-tests");
882 if (!np) {
883 pr_err("missing testcase data\n");
884 return;
885 }
886
887 cpu_addr = of_dma_get_max_cpu_address(np);
888 unittest(cpu_addr == 0x4fffffff,
889 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
890 &cpu_addr, 0x4fffffff);
891}
892
893static void __init of_unittest_dma_ranges_one(const char *path,
894 u64 expect_dma_addr, u64 expect_paddr)
895{
896#ifdef CONFIG_HAS_DMA
897 struct device_node *np;
898 const struct bus_dma_region *map = NULL;
899 int rc;
900
901 np = of_find_node_by_path(path);
902 if (!np) {
903 pr_err("missing testcase data\n");
904 return;
905 }
906
907 rc = of_dma_get_range(np, &map);
908
909 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
910
911 if (!rc) {
912 phys_addr_t paddr;
913 dma_addr_t dma_addr;
914 struct device dev_bogus;
915
916 dev_bogus.dma_range_map = map;
917 paddr = dma_to_phys(&dev_bogus, expect_dma_addr);
918 dma_addr = phys_to_dma(&dev_bogus, expect_paddr);
919
920 unittest(paddr == expect_paddr,
921 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
922 &paddr, expect_paddr, np);
923 unittest(dma_addr == expect_dma_addr,
924 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
925 &dma_addr, expect_dma_addr, np);
926
927 kfree(map);
928 }
929 of_node_put(np);
930#endif
931}
932
933static void __init of_unittest_parse_dma_ranges(void)
934{
935 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
936 0x0, 0x20000000);
937 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
938 0x100000000, 0x20000000);
939 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
940 0x80000000, 0x20000000);
941}
942
943static void __init of_unittest_pci_dma_ranges(void)
944{
945 struct device_node *np;
946 struct of_pci_range range;
947 struct of_pci_range_parser parser;
948 int i = 0;
949
950 if (!IS_ENABLED(CONFIG_PCI))
951 return;
952
953 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
954 if (!np) {
955 pr_err("missing testcase data\n");
956 return;
957 }
958
959 if (of_pci_dma_range_parser_init(&parser, np)) {
960 pr_err("missing dma-ranges property\n");
961 return;
962 }
963
964
965
966
967 for_each_of_pci_range(&parser, &range) {
968 if (!i) {
969 unittest(range.size == 0x10000000,
970 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
971 np, range.size);
972 unittest(range.cpu_addr == 0x20000000,
973 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
974 range.cpu_addr, np);
975 unittest(range.pci_addr == 0x80000000,
976 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
977 range.pci_addr, np);
978 } else {
979 unittest(range.size == 0x10000000,
980 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
981 np, range.size);
982 unittest(range.cpu_addr == 0x40000000,
983 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
984 range.cpu_addr, np);
985 unittest(range.pci_addr == 0xc0000000,
986 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
987 range.pci_addr, np);
988 }
989 i++;
990 }
991
992 of_node_put(np);
993}
994
995static void __init of_unittest_parse_interrupts(void)
996{
997 struct device_node *np;
998 struct of_phandle_args args;
999 int i, rc;
1000
1001 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1002 return;
1003
1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1005 if (!np) {
1006 pr_err("missing testcase data\n");
1007 return;
1008 }
1009
1010 for (i = 0; i < 4; i++) {
1011 bool passed = true;
1012
1013 memset(&args, 0, sizeof(args));
1014 rc = of_irq_parse_one(np, i, &args);
1015
1016 passed &= !rc;
1017 passed &= (args.args_count == 1);
1018 passed &= (args.args[0] == (i + 1));
1019
1020 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1021 i, args.np, rc);
1022 }
1023 of_node_put(np);
1024
1025 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1026 if (!np) {
1027 pr_err("missing testcase data\n");
1028 return;
1029 }
1030
1031 for (i = 0; i < 4; i++) {
1032 bool passed = true;
1033
1034 memset(&args, 0, sizeof(args));
1035 rc = of_irq_parse_one(np, i, &args);
1036
1037
1038 switch (i) {
1039 case 0:
1040 passed &= !rc;
1041 passed &= (args.args_count == 1);
1042 passed &= (args.args[0] == 9);
1043 break;
1044 case 1:
1045 passed &= !rc;
1046 passed &= (args.args_count == 3);
1047 passed &= (args.args[0] == 10);
1048 passed &= (args.args[1] == 11);
1049 passed &= (args.args[2] == 12);
1050 break;
1051 case 2:
1052 passed &= !rc;
1053 passed &= (args.args_count == 2);
1054 passed &= (args.args[0] == 13);
1055 passed &= (args.args[1] == 14);
1056 break;
1057 case 3:
1058 passed &= !rc;
1059 passed &= (args.args_count == 2);
1060 passed &= (args.args[0] == 15);
1061 passed &= (args.args[1] == 16);
1062 break;
1063 default:
1064 passed = false;
1065 }
1066 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1067 i, args.np, rc);
1068 }
1069 of_node_put(np);
1070}
1071
1072static void __init of_unittest_parse_interrupts_extended(void)
1073{
1074 struct device_node *np;
1075 struct of_phandle_args args;
1076 int i, rc;
1077
1078 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1079 return;
1080
1081 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1082 if (!np) {
1083 pr_err("missing testcase data\n");
1084 return;
1085 }
1086
1087 for (i = 0; i < 7; i++) {
1088 bool passed = true;
1089
1090 memset(&args, 0, sizeof(args));
1091 rc = of_irq_parse_one(np, i, &args);
1092
1093
1094 switch (i) {
1095 case 0:
1096 passed &= !rc;
1097 passed &= (args.args_count == 1);
1098 passed &= (args.args[0] == 1);
1099 break;
1100 case 1:
1101 passed &= !rc;
1102 passed &= (args.args_count == 3);
1103 passed &= (args.args[0] == 2);
1104 passed &= (args.args[1] == 3);
1105 passed &= (args.args[2] == 4);
1106 break;
1107 case 2:
1108 passed &= !rc;
1109 passed &= (args.args_count == 2);
1110 passed &= (args.args[0] == 5);
1111 passed &= (args.args[1] == 6);
1112 break;
1113 case 3:
1114 passed &= !rc;
1115 passed &= (args.args_count == 1);
1116 passed &= (args.args[0] == 9);
1117 break;
1118 case 4:
1119 passed &= !rc;
1120 passed &= (args.args_count == 3);
1121 passed &= (args.args[0] == 10);
1122 passed &= (args.args[1] == 11);
1123 passed &= (args.args[2] == 12);
1124 break;
1125 case 5:
1126 passed &= !rc;
1127 passed &= (args.args_count == 2);
1128 passed &= (args.args[0] == 13);
1129 passed &= (args.args[1] == 14);
1130 break;
1131 case 6:
1132 passed &= !rc;
1133 passed &= (args.args_count == 1);
1134 passed &= (args.args[0] == 15);
1135 break;
1136 default:
1137 passed = false;
1138 }
1139
1140 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1141 i, args.np, rc);
1142 }
1143 of_node_put(np);
1144}
1145
1146static const struct of_device_id match_node_table[] = {
1147 { .data = "A", .name = "name0", },
1148 { .data = "B", .type = "type1", },
1149
1150 { .data = "Ca", .name = "name2", .type = "type1", },
1151 { .data = "Cb", .name = "name2", },
1152 { .data = "Cc", .name = "name2", .type = "type2", },
1153
1154 { .data = "E", .compatible = "compat3" },
1155 { .data = "G", .compatible = "compat2", },
1156 { .data = "H", .compatible = "compat2", .name = "name5", },
1157 { .data = "I", .compatible = "compat2", .type = "type1", },
1158 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1159 { .data = "K", .compatible = "compat2", .name = "name9", },
1160 {}
1161};
1162
1163static struct {
1164 const char *path;
1165 const char *data;
1166} match_node_tests[] = {
1167 { .path = "/testcase-data/match-node/name0", .data = "A", },
1168 { .path = "/testcase-data/match-node/name1", .data = "B", },
1169 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1170 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1171 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1172 { .path = "/testcase-data/match-node/name3", .data = "E", },
1173 { .path = "/testcase-data/match-node/name4", .data = "G", },
1174 { .path = "/testcase-data/match-node/name5", .data = "H", },
1175 { .path = "/testcase-data/match-node/name6", .data = "G", },
1176 { .path = "/testcase-data/match-node/name7", .data = "I", },
1177 { .path = "/testcase-data/match-node/name8", .data = "J", },
1178 { .path = "/testcase-data/match-node/name9", .data = "K", },
1179};
1180
1181static void __init of_unittest_match_node(void)
1182{
1183 struct device_node *np;
1184 const struct of_device_id *match;
1185 int i;
1186
1187 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1188 np = of_find_node_by_path(match_node_tests[i].path);
1189 if (!np) {
1190 unittest(0, "missing testcase node %s\n",
1191 match_node_tests[i].path);
1192 continue;
1193 }
1194
1195 match = of_match_node(match_node_table, np);
1196 if (!match) {
1197 unittest(0, "%s didn't match anything\n",
1198 match_node_tests[i].path);
1199 continue;
1200 }
1201
1202 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1203 unittest(0, "%s got wrong match. expected %s, got %s\n",
1204 match_node_tests[i].path, match_node_tests[i].data,
1205 (const char *)match->data);
1206 continue;
1207 }
1208 unittest(1, "passed");
1209 }
1210}
1211
1212static struct resource test_bus_res = {
1213 .start = 0xfffffff8,
1214 .end = 0xfffffff9,
1215 .flags = IORESOURCE_MEM,
1216};
1217static const struct platform_device_info test_bus_info = {
1218 .name = "unittest-bus",
1219};
1220static void __init of_unittest_platform_populate(void)
1221{
1222 int irq, rc;
1223 struct device_node *np, *child, *grandchild;
1224 struct platform_device *pdev, *test_bus;
1225 const struct of_device_id match[] = {
1226 { .compatible = "test-device", },
1227 {}
1228 };
1229
1230 np = of_find_node_by_path("/testcase-data");
1231 of_platform_default_populate(np, NULL, NULL);
1232
1233
1234 np = of_find_node_by_path("/testcase-data/testcase-device1");
1235 pdev = of_find_device_by_node(np);
1236 unittest(pdev, "device 1 creation failed\n");
1237
1238 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1239 irq = platform_get_irq(pdev, 0);
1240 unittest(irq == -EPROBE_DEFER,
1241 "device deferred probe failed - %d\n", irq);
1242
1243
1244 np = of_find_node_by_path("/testcase-data/testcase-device2");
1245 pdev = of_find_device_by_node(np);
1246 unittest(pdev, "device 2 creation failed\n");
1247
1248 EXPECT_BEGIN(KERN_INFO,
1249 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1250
1251 irq = platform_get_irq(pdev, 0);
1252
1253 EXPECT_END(KERN_INFO,
1254 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1255
1256 unittest(irq < 0 && irq != -EPROBE_DEFER,
1257 "device parsing error failed - %d\n", irq);
1258 }
1259
1260 np = of_find_node_by_path("/testcase-data/platform-tests");
1261 unittest(np, "No testcase data in device tree\n");
1262 if (!np)
1263 return;
1264
1265 test_bus = platform_device_register_full(&test_bus_info);
1266 rc = PTR_ERR_OR_ZERO(test_bus);
1267 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1268 if (rc) {
1269 of_node_put(np);
1270 return;
1271 }
1272 test_bus->dev.of_node = np;
1273
1274
1275
1276
1277
1278
1279
1280
1281 platform_device_add_resources(test_bus, &test_bus_res, 1);
1282
1283 of_platform_populate(np, match, NULL, &test_bus->dev);
1284 for_each_child_of_node(np, child) {
1285 for_each_child_of_node(child, grandchild) {
1286 pdev = of_find_device_by_node(grandchild);
1287 unittest(pdev,
1288 "Could not create device for node '%pOFn'\n",
1289 grandchild);
1290 platform_device_put(pdev);
1291 }
1292 }
1293
1294 of_platform_depopulate(&test_bus->dev);
1295 for_each_child_of_node(np, child) {
1296 for_each_child_of_node(child, grandchild)
1297 unittest(!of_find_device_by_node(grandchild),
1298 "device didn't get destroyed '%pOFn'\n",
1299 grandchild);
1300 }
1301
1302 platform_device_unregister(test_bus);
1303 of_node_put(np);
1304}
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314static void update_node_properties(struct device_node *np,
1315 struct device_node *dup)
1316{
1317 struct property *prop;
1318 struct property *save_next;
1319 struct device_node *child;
1320 int ret;
1321
1322 for_each_child_of_node(np, child)
1323 child->parent = dup;
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342 for (prop = np->properties; prop != NULL; prop = save_next) {
1343 save_next = prop->next;
1344 ret = of_add_property(dup, prop);
1345 if (ret) {
1346 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1347 continue;
1348 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1349 np, prop->name);
1350 }
1351 }
1352}
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364static void attach_node_and_children(struct device_node *np)
1365{
1366 struct device_node *next, *dup, *child;
1367 unsigned long flags;
1368 const char *full_name;
1369
1370 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1371
1372 if (!strcmp(full_name, "/__local_fixups__") ||
1373 !strcmp(full_name, "/__fixups__")) {
1374 kfree(full_name);
1375 return;
1376 }
1377
1378 dup = of_find_node_by_path(full_name);
1379 kfree(full_name);
1380 if (dup) {
1381 update_node_properties(np, dup);
1382 return;
1383 }
1384
1385 child = np->child;
1386 np->child = NULL;
1387
1388 mutex_lock(&of_mutex);
1389 raw_spin_lock_irqsave(&devtree_lock, flags);
1390 np->sibling = np->parent->child;
1391 np->parent->child = np;
1392 of_node_clear_flag(np, OF_DETACHED);
1393 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1394
1395 __of_attach_node_sysfs(np);
1396 mutex_unlock(&of_mutex);
1397
1398 while (child) {
1399 next = child->sibling;
1400 attach_node_and_children(child);
1401 child = next;
1402 }
1403}
1404
1405
1406
1407
1408
1409static int __init unittest_data_add(void)
1410{
1411 void *unittest_data;
1412 void *unittest_data_align;
1413 struct device_node *unittest_data_node = NULL, *np;
1414
1415
1416
1417
1418 extern uint8_t __dtb_testcases_begin[];
1419 extern uint8_t __dtb_testcases_end[];
1420 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1421 int rc;
1422 void *ret;
1423
1424 if (!size) {
1425 pr_warn("%s: testcases is empty\n", __func__);
1426 return -ENODATA;
1427 }
1428
1429
1430 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1431 if (!unittest_data)
1432 return -ENOMEM;
1433
1434 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1435 memcpy(unittest_data_align, __dtb_testcases_begin, size);
1436
1437 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1438 if (!ret) {
1439 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1440 kfree(unittest_data);
1441 return -ENODATA;
1442 }
1443 if (!unittest_data_node) {
1444 pr_warn("%s: testcases tree is empty\n", __func__);
1445 kfree(unittest_data);
1446 return -ENODATA;
1447 }
1448
1449
1450
1451
1452 of_overlay_mutex_lock();
1453
1454 rc = of_resolve_phandles(unittest_data_node);
1455 if (rc) {
1456 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1457 of_overlay_mutex_unlock();
1458 return -EINVAL;
1459 }
1460
1461 if (!of_root) {
1462 of_root = unittest_data_node;
1463 for_each_of_allnodes(np)
1464 __of_attach_node_sysfs(np);
1465 of_aliases = of_find_node_by_path("/aliases");
1466 of_chosen = of_find_node_by_path("/chosen");
1467 of_overlay_mutex_unlock();
1468 return 0;
1469 }
1470
1471 EXPECT_BEGIN(KERN_INFO,
1472 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1473
1474
1475 np = unittest_data_node->child;
1476 while (np) {
1477 struct device_node *next = np->sibling;
1478
1479 np->parent = of_root;
1480 attach_node_and_children(np);
1481 np = next;
1482 }
1483
1484 EXPECT_END(KERN_INFO,
1485 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1486
1487 of_overlay_mutex_unlock();
1488
1489 return 0;
1490}
1491
1492#ifdef CONFIG_OF_OVERLAY
1493static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1494
1495static int unittest_probe(struct platform_device *pdev)
1496{
1497 struct device *dev = &pdev->dev;
1498 struct device_node *np = dev->of_node;
1499
1500 if (np == NULL) {
1501 dev_err(dev, "No OF data for device\n");
1502 return -EINVAL;
1503
1504 }
1505
1506 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1507
1508 of_platform_populate(np, NULL, NULL, &pdev->dev);
1509
1510 return 0;
1511}
1512
1513static int unittest_remove(struct platform_device *pdev)
1514{
1515 struct device *dev = &pdev->dev;
1516 struct device_node *np = dev->of_node;
1517
1518 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1519 return 0;
1520}
1521
1522static const struct of_device_id unittest_match[] = {
1523 { .compatible = "unittest", },
1524 {},
1525};
1526
1527static struct platform_driver unittest_driver = {
1528 .probe = unittest_probe,
1529 .remove = unittest_remove,
1530 .driver = {
1531 .name = "unittest",
1532 .of_match_table = of_match_ptr(unittest_match),
1533 },
1534};
1535
1536
1537static struct platform_device *of_path_to_platform_device(const char *path)
1538{
1539 struct device_node *np;
1540 struct platform_device *pdev;
1541
1542 np = of_find_node_by_path(path);
1543 if (np == NULL)
1544 return NULL;
1545
1546 pdev = of_find_device_by_node(np);
1547 of_node_put(np);
1548
1549 return pdev;
1550}
1551
1552
1553static int of_path_platform_device_exists(const char *path)
1554{
1555 struct platform_device *pdev;
1556
1557 pdev = of_path_to_platform_device(path);
1558 platform_device_put(pdev);
1559 return pdev != NULL;
1560}
1561
1562#ifdef CONFIG_OF_GPIO
1563
1564struct unittest_gpio_dev {
1565 struct gpio_chip chip;
1566};
1567
1568static int unittest_gpio_chip_request_count;
1569static int unittest_gpio_probe_count;
1570static int unittest_gpio_probe_pass_count;
1571
1572static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1573{
1574 unittest_gpio_chip_request_count++;
1575
1576 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1577 unittest_gpio_chip_request_count);
1578 return 0;
1579}
1580
1581static int unittest_gpio_probe(struct platform_device *pdev)
1582{
1583 struct unittest_gpio_dev *devptr;
1584 int ret;
1585
1586 unittest_gpio_probe_count++;
1587
1588 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1589 if (!devptr)
1590 return -ENOMEM;
1591
1592 platform_set_drvdata(pdev, devptr);
1593
1594 devptr->chip.of_node = pdev->dev.of_node;
1595 devptr->chip.label = "of-unittest-gpio";
1596 devptr->chip.base = -1;
1597 devptr->chip.ngpio = 5;
1598 devptr->chip.request = unittest_gpio_chip_request;
1599
1600 ret = gpiochip_add_data(&devptr->chip, NULL);
1601
1602 unittest(!ret,
1603 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1604
1605 if (!ret)
1606 unittest_gpio_probe_pass_count++;
1607 return ret;
1608}
1609
1610static int unittest_gpio_remove(struct platform_device *pdev)
1611{
1612 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1613 struct device *dev = &pdev->dev;
1614 struct device_node *np = pdev->dev.of_node;
1615
1616 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1617
1618 if (!gdev)
1619 return -EINVAL;
1620
1621 if (gdev->chip.base != -1)
1622 gpiochip_remove(&gdev->chip);
1623
1624 platform_set_drvdata(pdev, NULL);
1625 kfree(gdev);
1626
1627 return 0;
1628}
1629
1630static const struct of_device_id unittest_gpio_id[] = {
1631 { .compatible = "unittest-gpio", },
1632 {}
1633};
1634
1635static struct platform_driver unittest_gpio_driver = {
1636 .probe = unittest_gpio_probe,
1637 .remove = unittest_gpio_remove,
1638 .driver = {
1639 .name = "unittest-gpio",
1640 .of_match_table = of_match_ptr(unittest_gpio_id),
1641 },
1642};
1643
1644static void __init of_unittest_overlay_gpio(void)
1645{
1646 int chip_request_count;
1647 int probe_pass_count;
1648 int ret;
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671 probe_pass_count = unittest_gpio_probe_pass_count;
1672 chip_request_count = unittest_gpio_chip_request_count;
1673
1674
1675
1676
1677
1678
1679
1680 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1681 "Adding overlay 'overlay_gpio_01' failed\n");
1682
1683 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1684 "Adding overlay 'overlay_gpio_02a' failed\n");
1685
1686 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1687 "Adding overlay 'overlay_gpio_02b' failed\n");
1688
1689
1690
1691
1692
1693
1694 EXPECT_BEGIN(KERN_INFO,
1695 "GPIO line <<int>> (line-B-input) hogged as input\n");
1696
1697 EXPECT_BEGIN(KERN_INFO,
1698 "GPIO line <<int>> (line-A-input) hogged as input\n");
1699
1700 ret = platform_driver_register(&unittest_gpio_driver);
1701 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1702 return;
1703
1704 EXPECT_END(KERN_INFO,
1705 "GPIO line <<int>> (line-A-input) hogged as input\n");
1706 EXPECT_END(KERN_INFO,
1707 "GPIO line <<int>> (line-B-input) hogged as input\n");
1708
1709 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1710 "unittest_gpio_probe() failed or not called\n");
1711
1712 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1713 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1714 unittest_gpio_chip_request_count - chip_request_count);
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730 probe_pass_count = unittest_gpio_probe_pass_count;
1731 chip_request_count = unittest_gpio_chip_request_count;
1732
1733 EXPECT_BEGIN(KERN_INFO,
1734 "GPIO line <<int>> (line-D-input) hogged as input\n");
1735
1736
1737
1738 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1739 "Adding overlay 'overlay_gpio_03' failed\n");
1740
1741 EXPECT_END(KERN_INFO,
1742 "GPIO line <<int>> (line-D-input) hogged as input\n");
1743
1744 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1745 "unittest_gpio_probe() failed or not called\n");
1746
1747 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1748 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1749 unittest_gpio_chip_request_count - chip_request_count);
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760 probe_pass_count = unittest_gpio_probe_pass_count;
1761 chip_request_count = unittest_gpio_chip_request_count;
1762
1763
1764
1765 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1766 "Adding overlay 'overlay_gpio_04a' failed\n");
1767
1768 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1769 "unittest_gpio_probe() failed or not called\n");
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780 EXPECT_BEGIN(KERN_INFO,
1781 "GPIO line <<int>> (line-C-input) hogged as input\n");
1782
1783
1784
1785 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1786 "Adding overlay 'overlay_gpio_04b' failed\n");
1787
1788 EXPECT_END(KERN_INFO,
1789 "GPIO line <<int>> (line-C-input) hogged as input\n");
1790
1791 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1792 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1793 unittest_gpio_chip_request_count - chip_request_count);
1794}
1795
1796#else
1797
1798static void __init of_unittest_overlay_gpio(void)
1799{
1800
1801}
1802
1803#endif
1804
1805#if IS_BUILTIN(CONFIG_I2C)
1806
1807
1808static struct i2c_client *of_path_to_i2c_client(const char *path)
1809{
1810 struct device_node *np;
1811 struct i2c_client *client;
1812
1813 np = of_find_node_by_path(path);
1814 if (np == NULL)
1815 return NULL;
1816
1817 client = of_find_i2c_device_by_node(np);
1818 of_node_put(np);
1819
1820 return client;
1821}
1822
1823
1824static int of_path_i2c_client_exists(const char *path)
1825{
1826 struct i2c_client *client;
1827
1828 client = of_path_to_i2c_client(path);
1829 if (client)
1830 put_device(&client->dev);
1831 return client != NULL;
1832}
1833#else
1834static int of_path_i2c_client_exists(const char *path)
1835{
1836 return 0;
1837}
1838#endif
1839
1840enum overlay_type {
1841 PDEV_OVERLAY,
1842 I2C_OVERLAY
1843};
1844
1845static int of_path_device_type_exists(const char *path,
1846 enum overlay_type ovtype)
1847{
1848 switch (ovtype) {
1849 case PDEV_OVERLAY:
1850 return of_path_platform_device_exists(path);
1851 case I2C_OVERLAY:
1852 return of_path_i2c_client_exists(path);
1853 }
1854 return 0;
1855}
1856
1857static const char *unittest_path(int nr, enum overlay_type ovtype)
1858{
1859 const char *base;
1860 static char buf[256];
1861
1862 switch (ovtype) {
1863 case PDEV_OVERLAY:
1864 base = "/testcase-data/overlay-node/test-bus";
1865 break;
1866 case I2C_OVERLAY:
1867 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1868 break;
1869 default:
1870 buf[0] = '\0';
1871 return buf;
1872 }
1873 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1874 buf[sizeof(buf) - 1] = '\0';
1875 return buf;
1876}
1877
1878static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1879{
1880 const char *path;
1881
1882 path = unittest_path(unittest_nr, ovtype);
1883
1884 switch (ovtype) {
1885 case PDEV_OVERLAY:
1886 return of_path_platform_device_exists(path);
1887 case I2C_OVERLAY:
1888 return of_path_i2c_client_exists(path);
1889 }
1890 return 0;
1891}
1892
1893static const char *overlay_name_from_nr(int nr)
1894{
1895 static char buf[256];
1896
1897 snprintf(buf, sizeof(buf) - 1,
1898 "overlay_%d", nr);
1899 buf[sizeof(buf) - 1] = '\0';
1900
1901 return buf;
1902}
1903
1904static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1905
1906
1907
1908#define MAX_UNITTEST_OVERLAYS 256
1909static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1910static int overlay_first_id = -1;
1911
1912static long of_unittest_overlay_tracked(int id)
1913{
1914 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1915 return 0;
1916 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1917}
1918
1919static void of_unittest_track_overlay(int id)
1920{
1921 if (overlay_first_id < 0)
1922 overlay_first_id = id;
1923 id -= overlay_first_id;
1924
1925 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1926 return;
1927 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1928}
1929
1930static void of_unittest_untrack_overlay(int id)
1931{
1932 if (overlay_first_id < 0)
1933 return;
1934 id -= overlay_first_id;
1935 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1936 return;
1937 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1938}
1939
1940static void of_unittest_destroy_tracked_overlays(void)
1941{
1942 int id, ret, defers, ovcs_id;
1943
1944 if (overlay_first_id < 0)
1945 return;
1946
1947
1948 do {
1949 defers = 0;
1950
1951 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1952 if (!of_unittest_overlay_tracked(id))
1953 continue;
1954
1955 ovcs_id = id + overlay_first_id;
1956 ret = of_overlay_remove(&ovcs_id);
1957 if (ret == -ENODEV) {
1958 pr_warn("%s: no overlay to destroy for #%d\n",
1959 __func__, id + overlay_first_id);
1960 continue;
1961 }
1962 if (ret != 0) {
1963 defers++;
1964 pr_warn("%s: overlay destroy failed for #%d\n",
1965 __func__, id + overlay_first_id);
1966 continue;
1967 }
1968
1969 of_unittest_untrack_overlay(id);
1970 }
1971 } while (defers > 0);
1972}
1973
1974static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1975{
1976 const char *overlay_name;
1977
1978 overlay_name = overlay_name_from_nr(overlay_nr);
1979
1980 if (!overlay_data_apply(overlay_name, overlay_id)) {
1981 unittest(0, "could not apply overlay \"%s\"\n",
1982 overlay_name);
1983 return -EFAULT;
1984 }
1985 of_unittest_track_overlay(*overlay_id);
1986
1987 return 0;
1988}
1989
1990
1991static int __init of_unittest_apply_overlay_check(int overlay_nr,
1992 int unittest_nr, int before, int after,
1993 enum overlay_type ovtype)
1994{
1995 int ret, ovcs_id;
1996
1997
1998 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1999 unittest(0, "%s with device @\"%s\" %s\n",
2000 overlay_name_from_nr(overlay_nr),
2001 unittest_path(unittest_nr, ovtype),
2002 !before ? "enabled" : "disabled");
2003 return -EINVAL;
2004 }
2005
2006 ovcs_id = 0;
2007 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2008 if (ret != 0) {
2009
2010 return ret;
2011 }
2012
2013
2014 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2015 unittest(0, "%s failed to create @\"%s\" %s\n",
2016 overlay_name_from_nr(overlay_nr),
2017 unittest_path(unittest_nr, ovtype),
2018 !after ? "enabled" : "disabled");
2019 return -EINVAL;
2020 }
2021
2022 return 0;
2023}
2024
2025
2026static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2027 int unittest_nr, int before, int after,
2028 enum overlay_type ovtype)
2029{
2030 int ret, ovcs_id, save_id;
2031
2032
2033 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2034 unittest(0, "%s with device @\"%s\" %s\n",
2035 overlay_name_from_nr(overlay_nr),
2036 unittest_path(unittest_nr, ovtype),
2037 !before ? "enabled" : "disabled");
2038 return -EINVAL;
2039 }
2040
2041
2042 ovcs_id = 0;
2043 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2044 if (ret != 0) {
2045
2046 return ret;
2047 }
2048
2049
2050 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2051 unittest(0, "%s failed to create @\"%s\" %s\n",
2052 overlay_name_from_nr(overlay_nr),
2053 unittest_path(unittest_nr, ovtype),
2054 !after ? "enabled" : "disabled");
2055 return -EINVAL;
2056 }
2057
2058 save_id = ovcs_id;
2059 ret = of_overlay_remove(&ovcs_id);
2060 if (ret != 0) {
2061 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2062 overlay_name_from_nr(overlay_nr),
2063 unittest_path(unittest_nr, ovtype));
2064 return ret;
2065 }
2066 of_unittest_untrack_overlay(save_id);
2067
2068
2069 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2070 unittest(0, "%s with device @\"%s\" %s\n",
2071 overlay_name_from_nr(overlay_nr),
2072 unittest_path(unittest_nr, ovtype),
2073 !before ? "enabled" : "disabled");
2074 return -EINVAL;
2075 }
2076
2077 return 0;
2078}
2079
2080
2081static void __init of_unittest_overlay_0(void)
2082{
2083 int ret;
2084
2085 EXPECT_BEGIN(KERN_INFO,
2086 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2087
2088
2089 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2090
2091 EXPECT_END(KERN_INFO,
2092 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2093
2094 if (ret)
2095 return;
2096
2097 unittest(1, "overlay test %d passed\n", 0);
2098}
2099
2100
2101static void __init of_unittest_overlay_1(void)
2102{
2103 int ret;
2104
2105 EXPECT_BEGIN(KERN_INFO,
2106 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2107
2108
2109 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2110
2111 EXPECT_END(KERN_INFO,
2112 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2113
2114 if (ret)
2115 return;
2116
2117 unittest(1, "overlay test %d passed\n", 1);
2118
2119}
2120
2121
2122static void __init of_unittest_overlay_2(void)
2123{
2124 int ret;
2125
2126 EXPECT_BEGIN(KERN_INFO,
2127 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2128
2129
2130 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2131
2132 EXPECT_END(KERN_INFO,
2133 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2134
2135 if (ret)
2136 return;
2137 unittest(1, "overlay test %d passed\n", 2);
2138}
2139
2140
2141static void __init of_unittest_overlay_3(void)
2142{
2143 int ret;
2144
2145 EXPECT_BEGIN(KERN_INFO,
2146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2147
2148
2149 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2150
2151 EXPECT_END(KERN_INFO,
2152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2153
2154 if (ret)
2155 return;
2156
2157 unittest(1, "overlay test %d passed\n", 3);
2158}
2159
2160
2161static void __init of_unittest_overlay_4(void)
2162{
2163
2164 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2165 return;
2166
2167 unittest(1, "overlay test %d passed\n", 4);
2168}
2169
2170
2171static void __init of_unittest_overlay_5(void)
2172{
2173 int ret;
2174
2175 EXPECT_BEGIN(KERN_INFO,
2176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2177
2178
2179 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2180
2181 EXPECT_END(KERN_INFO,
2182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2183
2184 if (ret)
2185 return;
2186
2187 unittest(1, "overlay test %d passed\n", 5);
2188}
2189
2190
2191static void __init of_unittest_overlay_6(void)
2192{
2193 int i, ov_id[2], ovcs_id;
2194 int overlay_nr = 6, unittest_nr = 6;
2195 int before = 0, after = 1;
2196 const char *overlay_name;
2197
2198 int ret;
2199
2200
2201 for (i = 0; i < 2; i++) {
2202 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2203 != before) {
2204 unittest(0, "%s with device @\"%s\" %s\n",
2205 overlay_name_from_nr(overlay_nr + i),
2206 unittest_path(unittest_nr + i,
2207 PDEV_OVERLAY),
2208 !before ? "enabled" : "disabled");
2209 return;
2210 }
2211 }
2212
2213
2214
2215 EXPECT_BEGIN(KERN_INFO,
2216 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2217
2218 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2219
2220 ret = overlay_data_apply(overlay_name, &ovcs_id);
2221
2222 if (!ret) {
2223 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2224 return;
2225 }
2226 ov_id[0] = ovcs_id;
2227 of_unittest_track_overlay(ov_id[0]);
2228
2229 EXPECT_END(KERN_INFO,
2230 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2231
2232 EXPECT_BEGIN(KERN_INFO,
2233 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2234
2235 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2236
2237 ret = overlay_data_apply(overlay_name, &ovcs_id);
2238
2239 if (!ret) {
2240 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2241 return;
2242 }
2243 ov_id[1] = ovcs_id;
2244 of_unittest_track_overlay(ov_id[1]);
2245
2246 EXPECT_END(KERN_INFO,
2247 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2248
2249
2250 for (i = 0; i < 2; i++) {
2251
2252 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2253 != after) {
2254 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2255 overlay_name_from_nr(overlay_nr + i),
2256 unittest_path(unittest_nr + i,
2257 PDEV_OVERLAY),
2258 !after ? "enabled" : "disabled");
2259 return;
2260 }
2261 }
2262
2263 for (i = 1; i >= 0; i--) {
2264 ovcs_id = ov_id[i];
2265 if (of_overlay_remove(&ovcs_id)) {
2266 unittest(0, "%s failed destroy @\"%s\"\n",
2267 overlay_name_from_nr(overlay_nr + i),
2268 unittest_path(unittest_nr + i,
2269 PDEV_OVERLAY));
2270 return;
2271 }
2272 of_unittest_untrack_overlay(ov_id[i]);
2273 }
2274
2275 for (i = 0; i < 2; i++) {
2276
2277 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2278 != before) {
2279 unittest(0, "%s with device @\"%s\" %s\n",
2280 overlay_name_from_nr(overlay_nr + i),
2281 unittest_path(unittest_nr + i,
2282 PDEV_OVERLAY),
2283 !before ? "enabled" : "disabled");
2284 return;
2285 }
2286 }
2287
2288 unittest(1, "overlay test %d passed\n", 6);
2289
2290}
2291
2292
2293static void __init of_unittest_overlay_8(void)
2294{
2295 int i, ov_id[2], ovcs_id;
2296 int overlay_nr = 8, unittest_nr = 8;
2297 const char *overlay_name;
2298 int ret;
2299
2300
2301
2302 EXPECT_BEGIN(KERN_INFO,
2303 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2304
2305 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2306
2307 ret = overlay_data_apply(overlay_name, &ovcs_id);
2308 if (!ret)
2309 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2310
2311 EXPECT_END(KERN_INFO,
2312 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2313
2314 if (!ret)
2315 return;
2316
2317 ov_id[0] = ovcs_id;
2318 of_unittest_track_overlay(ov_id[0]);
2319
2320 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2321
2322 EXPECT_BEGIN(KERN_INFO,
2323 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2324
2325
2326 ret = overlay_data_apply(overlay_name, &ovcs_id);
2327
2328 EXPECT_END(KERN_INFO,
2329 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2330
2331 if (!ret) {
2332 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2333 return;
2334 }
2335
2336 ov_id[1] = ovcs_id;
2337 of_unittest_track_overlay(ov_id[1]);
2338
2339
2340 ovcs_id = ov_id[0];
2341
2342 EXPECT_BEGIN(KERN_INFO,
2343 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2344
2345 EXPECT_BEGIN(KERN_INFO,
2346 "OF: overlay: overlay #6 is not topmost");
2347
2348 ret = of_overlay_remove(&ovcs_id);
2349
2350 EXPECT_END(KERN_INFO,
2351 "OF: overlay: overlay #6 is not topmost");
2352
2353 EXPECT_END(KERN_INFO,
2354 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2355
2356 if (!ret) {
2357 unittest(0, "%s was destroyed @\"%s\"\n",
2358 overlay_name_from_nr(overlay_nr + 0),
2359 unittest_path(unittest_nr,
2360 PDEV_OVERLAY));
2361 return;
2362 }
2363
2364
2365 for (i = 1; i >= 0; i--) {
2366 ovcs_id = ov_id[i];
2367 if (of_overlay_remove(&ovcs_id)) {
2368 unittest(0, "%s not destroyed @\"%s\"\n",
2369 overlay_name_from_nr(overlay_nr + i),
2370 unittest_path(unittest_nr,
2371 PDEV_OVERLAY));
2372 return;
2373 }
2374 of_unittest_untrack_overlay(ov_id[i]);
2375 }
2376
2377 unittest(1, "overlay test %d passed\n", 8);
2378}
2379
2380
2381static void __init of_unittest_overlay_10(void)
2382{
2383 int ret;
2384 char *child_path;
2385
2386
2387 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2388
2389 if (unittest(ret == 0,
2390 "overlay test %d failed; overlay application\n", 10))
2391 return;
2392
2393 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2394 unittest_path(10, PDEV_OVERLAY));
2395 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2396 return;
2397
2398 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2399 kfree(child_path);
2400
2401 unittest(ret, "overlay test %d failed; no child device\n", 10);
2402}
2403
2404
2405static void __init of_unittest_overlay_11(void)
2406{
2407 int ret;
2408
2409
2410 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2411 PDEV_OVERLAY);
2412
2413 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2414}
2415
2416#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2417
2418struct unittest_i2c_bus_data {
2419 struct platform_device *pdev;
2420 struct i2c_adapter adap;
2421};
2422
2423static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2424 struct i2c_msg *msgs, int num)
2425{
2426 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2427
2428 (void)std;
2429
2430 return num;
2431}
2432
2433static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2434{
2435 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2436}
2437
2438static const struct i2c_algorithm unittest_i2c_algo = {
2439 .master_xfer = unittest_i2c_master_xfer,
2440 .functionality = unittest_i2c_functionality,
2441};
2442
2443static int unittest_i2c_bus_probe(struct platform_device *pdev)
2444{
2445 struct device *dev = &pdev->dev;
2446 struct device_node *np = dev->of_node;
2447 struct unittest_i2c_bus_data *std;
2448 struct i2c_adapter *adap;
2449 int ret;
2450
2451 if (np == NULL) {
2452 dev_err(dev, "No OF data for device\n");
2453 return -EINVAL;
2454
2455 }
2456
2457 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2458
2459 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2460 if (!std)
2461 return -ENOMEM;
2462
2463
2464 std->pdev = pdev;
2465 platform_set_drvdata(pdev, std);
2466
2467 adap = &std->adap;
2468 i2c_set_adapdata(adap, std);
2469 adap->nr = -1;
2470 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2471 adap->class = I2C_CLASS_DEPRECATED;
2472 adap->algo = &unittest_i2c_algo;
2473 adap->dev.parent = dev;
2474 adap->dev.of_node = dev->of_node;
2475 adap->timeout = 5 * HZ;
2476 adap->retries = 3;
2477
2478 ret = i2c_add_numbered_adapter(adap);
2479 if (ret != 0) {
2480 dev_err(dev, "Failed to add I2C adapter\n");
2481 return ret;
2482 }
2483
2484 return 0;
2485}
2486
2487static int unittest_i2c_bus_remove(struct platform_device *pdev)
2488{
2489 struct device *dev = &pdev->dev;
2490 struct device_node *np = dev->of_node;
2491 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2492
2493 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2494 i2c_del_adapter(&std->adap);
2495
2496 return 0;
2497}
2498
2499static const struct of_device_id unittest_i2c_bus_match[] = {
2500 { .compatible = "unittest-i2c-bus", },
2501 {},
2502};
2503
2504static struct platform_driver unittest_i2c_bus_driver = {
2505 .probe = unittest_i2c_bus_probe,
2506 .remove = unittest_i2c_bus_remove,
2507 .driver = {
2508 .name = "unittest-i2c-bus",
2509 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2510 },
2511};
2512
2513static int unittest_i2c_dev_probe(struct i2c_client *client,
2514 const struct i2c_device_id *id)
2515{
2516 struct device *dev = &client->dev;
2517 struct device_node *np = client->dev.of_node;
2518
2519 if (!np) {
2520 dev_err(dev, "No OF node\n");
2521 return -EINVAL;
2522 }
2523
2524 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2525
2526 return 0;
2527};
2528
2529static int unittest_i2c_dev_remove(struct i2c_client *client)
2530{
2531 struct device *dev = &client->dev;
2532 struct device_node *np = client->dev.of_node;
2533
2534 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2535 return 0;
2536}
2537
2538static const struct i2c_device_id unittest_i2c_dev_id[] = {
2539 { .name = "unittest-i2c-dev" },
2540 { }
2541};
2542
2543static struct i2c_driver unittest_i2c_dev_driver = {
2544 .driver = {
2545 .name = "unittest-i2c-dev",
2546 },
2547 .probe = unittest_i2c_dev_probe,
2548 .remove = unittest_i2c_dev_remove,
2549 .id_table = unittest_i2c_dev_id,
2550};
2551
2552#if IS_BUILTIN(CONFIG_I2C_MUX)
2553
2554static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2555{
2556 return 0;
2557}
2558
2559static int unittest_i2c_mux_probe(struct i2c_client *client,
2560 const struct i2c_device_id *id)
2561{
2562 int i, nchans;
2563 struct device *dev = &client->dev;
2564 struct i2c_adapter *adap = client->adapter;
2565 struct device_node *np = client->dev.of_node, *child;
2566 struct i2c_mux_core *muxc;
2567 u32 reg, max_reg;
2568
2569 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2570
2571 if (!np) {
2572 dev_err(dev, "No OF node\n");
2573 return -EINVAL;
2574 }
2575
2576 max_reg = (u32)-1;
2577 for_each_child_of_node(np, child) {
2578 if (of_property_read_u32(child, "reg", ®))
2579 continue;
2580 if (max_reg == (u32)-1 || reg > max_reg)
2581 max_reg = reg;
2582 }
2583 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2584 if (nchans == 0) {
2585 dev_err(dev, "No channels\n");
2586 return -EINVAL;
2587 }
2588
2589 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2590 unittest_i2c_mux_select_chan, NULL);
2591 if (!muxc)
2592 return -ENOMEM;
2593 for (i = 0; i < nchans; i++) {
2594 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2595 dev_err(dev, "Failed to register mux #%d\n", i);
2596 i2c_mux_del_adapters(muxc);
2597 return -ENODEV;
2598 }
2599 }
2600
2601 i2c_set_clientdata(client, muxc);
2602
2603 return 0;
2604};
2605
2606static int unittest_i2c_mux_remove(struct i2c_client *client)
2607{
2608 struct device *dev = &client->dev;
2609 struct device_node *np = client->dev.of_node;
2610 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2611
2612 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2613 i2c_mux_del_adapters(muxc);
2614 return 0;
2615}
2616
2617static const struct i2c_device_id unittest_i2c_mux_id[] = {
2618 { .name = "unittest-i2c-mux" },
2619 { }
2620};
2621
2622static struct i2c_driver unittest_i2c_mux_driver = {
2623 .driver = {
2624 .name = "unittest-i2c-mux",
2625 },
2626 .probe = unittest_i2c_mux_probe,
2627 .remove = unittest_i2c_mux_remove,
2628 .id_table = unittest_i2c_mux_id,
2629};
2630
2631#endif
2632
2633static int of_unittest_overlay_i2c_init(void)
2634{
2635 int ret;
2636
2637 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2638 if (unittest(ret == 0,
2639 "could not register unittest i2c device driver\n"))
2640 return ret;
2641
2642 ret = platform_driver_register(&unittest_i2c_bus_driver);
2643
2644 if (unittest(ret == 0,
2645 "could not register unittest i2c bus driver\n"))
2646 return ret;
2647
2648#if IS_BUILTIN(CONFIG_I2C_MUX)
2649
2650 EXPECT_BEGIN(KERN_INFO,
2651 "i2c i2c-1: Added multiplexed i2c bus 2");
2652
2653 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2654
2655 EXPECT_END(KERN_INFO,
2656 "i2c i2c-1: Added multiplexed i2c bus 2");
2657
2658 if (unittest(ret == 0,
2659 "could not register unittest i2c mux driver\n"))
2660 return ret;
2661#endif
2662
2663 return 0;
2664}
2665
2666static void of_unittest_overlay_i2c_cleanup(void)
2667{
2668#if IS_BUILTIN(CONFIG_I2C_MUX)
2669 i2c_del_driver(&unittest_i2c_mux_driver);
2670#endif
2671 platform_driver_unregister(&unittest_i2c_bus_driver);
2672 i2c_del_driver(&unittest_i2c_dev_driver);
2673}
2674
2675static void __init of_unittest_overlay_i2c_12(void)
2676{
2677 int ret;
2678
2679
2680 EXPECT_BEGIN(KERN_INFO,
2681 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2682
2683 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2684
2685 EXPECT_END(KERN_INFO,
2686 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2687
2688 if (ret)
2689 return;
2690
2691 unittest(1, "overlay test %d passed\n", 12);
2692}
2693
2694
2695static void __init of_unittest_overlay_i2c_13(void)
2696{
2697 int ret;
2698
2699 EXPECT_BEGIN(KERN_INFO,
2700 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2701
2702
2703 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2704
2705 EXPECT_END(KERN_INFO,
2706 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2707
2708 if (ret)
2709 return;
2710
2711 unittest(1, "overlay test %d passed\n", 13);
2712}
2713
2714
2715static void of_unittest_overlay_i2c_14(void)
2716{
2717}
2718
2719static void __init of_unittest_overlay_i2c_15(void)
2720{
2721 int ret;
2722
2723
2724 EXPECT_BEGIN(KERN_INFO,
2725 "i2c i2c-1: Added multiplexed i2c bus 3");
2726
2727 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2728
2729 EXPECT_END(KERN_INFO,
2730 "i2c i2c-1: Added multiplexed i2c bus 3");
2731
2732 if (ret)
2733 return;
2734
2735 unittest(1, "overlay test %d passed\n", 15);
2736}
2737
2738#else
2739
2740static inline void of_unittest_overlay_i2c_14(void) { }
2741static inline void of_unittest_overlay_i2c_15(void) { }
2742
2743#endif
2744
2745static void __init of_unittest_overlay(void)
2746{
2747 struct device_node *bus_np = NULL;
2748
2749 if (platform_driver_register(&unittest_driver)) {
2750 unittest(0, "could not register unittest driver\n");
2751 goto out;
2752 }
2753
2754 bus_np = of_find_node_by_path(bus_path);
2755 if (bus_np == NULL) {
2756 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2757 goto out;
2758 }
2759
2760 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2761 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2762 goto out;
2763 }
2764
2765 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2766 unittest(0, "could not find unittest0 @ \"%s\"\n",
2767 unittest_path(100, PDEV_OVERLAY));
2768 goto out;
2769 }
2770
2771 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2772 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2773 unittest_path(101, PDEV_OVERLAY));
2774 goto out;
2775 }
2776
2777 unittest(1, "basic infrastructure of overlays passed");
2778
2779
2780 of_unittest_overlay_0();
2781 of_unittest_overlay_1();
2782 of_unittest_overlay_2();
2783 of_unittest_overlay_3();
2784 of_unittest_overlay_4();
2785 of_unittest_overlay_5();
2786 of_unittest_overlay_6();
2787 of_unittest_overlay_8();
2788
2789 of_unittest_overlay_10();
2790 of_unittest_overlay_11();
2791
2792#if IS_BUILTIN(CONFIG_I2C)
2793 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2794 goto out;
2795
2796 of_unittest_overlay_i2c_12();
2797 of_unittest_overlay_i2c_13();
2798 of_unittest_overlay_i2c_14();
2799 of_unittest_overlay_i2c_15();
2800
2801 of_unittest_overlay_i2c_cleanup();
2802#endif
2803
2804 of_unittest_overlay_gpio();
2805
2806 of_unittest_destroy_tracked_overlays();
2807
2808out:
2809 of_node_put(bus_np);
2810}
2811
2812#else
2813static inline void __init of_unittest_overlay(void) { }
2814#endif
2815
2816#ifdef CONFIG_OF_OVERLAY
2817
2818
2819
2820
2821
2822
2823#define OVERLAY_INFO_EXTERN(name) \
2824 extern uint8_t __dtb_##name##_begin[]; \
2825 extern uint8_t __dtb_##name##_end[]
2826
2827#define OVERLAY_INFO(overlay_name, expected) \
2828{ .dtb_begin = __dtb_##overlay_name##_begin, \
2829 .dtb_end = __dtb_##overlay_name##_end, \
2830 .expected_result = expected, \
2831 .name = #overlay_name, \
2832}
2833
2834struct overlay_info {
2835 uint8_t *dtb_begin;
2836 uint8_t *dtb_end;
2837 int expected_result;
2838 int overlay_id;
2839 char *name;
2840};
2841
2842OVERLAY_INFO_EXTERN(overlay_base);
2843OVERLAY_INFO_EXTERN(overlay);
2844OVERLAY_INFO_EXTERN(overlay_0);
2845OVERLAY_INFO_EXTERN(overlay_1);
2846OVERLAY_INFO_EXTERN(overlay_2);
2847OVERLAY_INFO_EXTERN(overlay_3);
2848OVERLAY_INFO_EXTERN(overlay_4);
2849OVERLAY_INFO_EXTERN(overlay_5);
2850OVERLAY_INFO_EXTERN(overlay_6);
2851OVERLAY_INFO_EXTERN(overlay_7);
2852OVERLAY_INFO_EXTERN(overlay_8);
2853OVERLAY_INFO_EXTERN(overlay_9);
2854OVERLAY_INFO_EXTERN(overlay_10);
2855OVERLAY_INFO_EXTERN(overlay_11);
2856OVERLAY_INFO_EXTERN(overlay_12);
2857OVERLAY_INFO_EXTERN(overlay_13);
2858OVERLAY_INFO_EXTERN(overlay_15);
2859OVERLAY_INFO_EXTERN(overlay_gpio_01);
2860OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2861OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2862OVERLAY_INFO_EXTERN(overlay_gpio_03);
2863OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2864OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2865OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2866OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2867OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2868OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2869
2870
2871static struct overlay_info overlays[] = {
2872 OVERLAY_INFO(overlay_base, -9999),
2873 OVERLAY_INFO(overlay, 0),
2874 OVERLAY_INFO(overlay_0, 0),
2875 OVERLAY_INFO(overlay_1, 0),
2876 OVERLAY_INFO(overlay_2, 0),
2877 OVERLAY_INFO(overlay_3, 0),
2878 OVERLAY_INFO(overlay_4, 0),
2879 OVERLAY_INFO(overlay_5, 0),
2880 OVERLAY_INFO(overlay_6, 0),
2881 OVERLAY_INFO(overlay_7, 0),
2882 OVERLAY_INFO(overlay_8, 0),
2883 OVERLAY_INFO(overlay_9, 0),
2884 OVERLAY_INFO(overlay_10, 0),
2885 OVERLAY_INFO(overlay_11, 0),
2886 OVERLAY_INFO(overlay_12, 0),
2887 OVERLAY_INFO(overlay_13, 0),
2888 OVERLAY_INFO(overlay_15, 0),
2889 OVERLAY_INFO(overlay_gpio_01, 0),
2890 OVERLAY_INFO(overlay_gpio_02a, 0),
2891 OVERLAY_INFO(overlay_gpio_02b, 0),
2892 OVERLAY_INFO(overlay_gpio_03, 0),
2893 OVERLAY_INFO(overlay_gpio_04a, 0),
2894 OVERLAY_INFO(overlay_gpio_04b, 0),
2895 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2896 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2897 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2898 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2899
2900 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2901};
2902
2903static struct device_node *overlay_base_root;
2904
2905static void * __init dt_alloc_memory(u64 size, u64 align)
2906{
2907 void *ptr = memblock_alloc(size, align);
2908
2909 if (!ptr)
2910 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2911 __func__, size, align);
2912
2913 return ptr;
2914}
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930void __init unittest_unflatten_overlay_base(void)
2931{
2932 struct overlay_info *info;
2933 u32 data_size;
2934 void *new_fdt;
2935 u32 size;
2936 int found = 0;
2937 const char *overlay_name = "overlay_base";
2938
2939 for (info = overlays; info && info->name; info++) {
2940 if (!strcmp(overlay_name, info->name)) {
2941 found = 1;
2942 break;
2943 }
2944 }
2945 if (!found) {
2946 pr_err("no overlay data for %s\n", overlay_name);
2947 return;
2948 }
2949
2950 info = &overlays[0];
2951
2952 if (info->expected_result != -9999) {
2953 pr_err("No dtb 'overlay_base' to attach\n");
2954 return;
2955 }
2956
2957 data_size = info->dtb_end - info->dtb_begin;
2958 if (!data_size) {
2959 pr_err("No dtb 'overlay_base' to attach\n");
2960 return;
2961 }
2962
2963 size = fdt_totalsize(info->dtb_begin);
2964 if (size != data_size) {
2965 pr_err("dtb 'overlay_base' header totalsize != actual size");
2966 return;
2967 }
2968
2969 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2970 if (!new_fdt) {
2971 pr_err("alloc for dtb 'overlay_base' failed");
2972 return;
2973 }
2974
2975 memcpy(new_fdt, info->dtb_begin, size);
2976
2977 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2978 dt_alloc_memory, true);
2979}
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2993{
2994 struct overlay_info *info;
2995 int found = 0;
2996 int ret;
2997 u32 size;
2998
2999 for (info = overlays; info && info->name; info++) {
3000 if (!strcmp(overlay_name, info->name)) {
3001 found = 1;
3002 break;
3003 }
3004 }
3005 if (!found) {
3006 pr_err("no overlay data for %s\n", overlay_name);
3007 return 0;
3008 }
3009
3010 size = info->dtb_end - info->dtb_begin;
3011 if (!size)
3012 pr_err("no overlay data for %s\n", overlay_name);
3013
3014 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3015 if (overlay_id)
3016 *overlay_id = info->overlay_id;
3017 if (ret < 0)
3018 goto out;
3019
3020 pr_debug("%s applied\n", overlay_name);
3021
3022out:
3023 if (ret != info->expected_result)
3024 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3025 info->expected_result, ret, overlay_name);
3026
3027 return (ret == info->expected_result);
3028}
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038static __init void of_unittest_overlay_high_level(void)
3039{
3040 struct device_node *last_sibling;
3041 struct device_node *np;
3042 struct device_node *of_symbols;
3043 struct device_node *overlay_base_symbols;
3044 struct device_node **pprev;
3045 struct property *prop;
3046 int ret;
3047
3048 if (!overlay_base_root) {
3049 unittest(0, "overlay_base_root not initialized\n");
3050 return;
3051 }
3052
3053
3054
3055
3056
3057 of_overlay_mutex_lock();
3058 of_resolve_phandles(overlay_base_root);
3059 of_overlay_mutex_unlock();
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071 pprev = &overlay_base_root->child;
3072 for (np = overlay_base_root->child; np; np = np->sibling) {
3073 if (of_node_name_eq(np, "__local_fixups__")) {
3074 *pprev = np->sibling;
3075 break;
3076 }
3077 pprev = &np->sibling;
3078 }
3079
3080
3081 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3082 if (of_symbols) {
3083
3084 pprev = &overlay_base_root->child;
3085 for (np = overlay_base_root->child; np; np = np->sibling) {
3086 if (of_node_name_eq(np, "__symbols__")) {
3087 overlay_base_symbols = np;
3088 *pprev = np->sibling;
3089 break;
3090 }
3091 pprev = &np->sibling;
3092 }
3093 }
3094
3095 for_each_child_of_node(overlay_base_root, np) {
3096 struct device_node *base_child;
3097 for_each_child_of_node(of_root, base_child) {
3098 if (!strcmp(np->full_name, base_child->full_name)) {
3099 unittest(0, "illegal node name in overlay_base %pOFn",
3100 np);
3101 return;
3102 }
3103 }
3104 }
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114 for (np = overlay_base_root->child; np; np = np->sibling)
3115 np->parent = of_root;
3116
3117 mutex_lock(&of_mutex);
3118
3119 for (last_sibling = np = of_root->child; np; np = np->sibling)
3120 last_sibling = np;
3121
3122 if (last_sibling)
3123 last_sibling->sibling = overlay_base_root->child;
3124 else
3125 of_root->child = overlay_base_root->child;
3126
3127 for_each_of_allnodes_from(overlay_base_root, np)
3128 __of_attach_node_sysfs(np);
3129
3130 if (of_symbols) {
3131 struct property *new_prop;
3132 for_each_property_of_node(overlay_base_symbols, prop) {
3133
3134 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3135 if (!new_prop) {
3136 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3137 prop->name);
3138 goto err_unlock;
3139 }
3140 if (__of_add_property(of_symbols, new_prop)) {
3141 kfree(new_prop->name);
3142 kfree(new_prop->value);
3143 kfree(new_prop);
3144
3145 if (!strcmp(prop->name, "name"))
3146 continue;
3147 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3148 prop->name);
3149 goto err_unlock;
3150 }
3151 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3152 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3153 prop->name);
3154 goto err_unlock;
3155 }
3156 }
3157 }
3158
3159 mutex_unlock(&of_mutex);
3160
3161
3162
3163
3164 EXPECT_BEGIN(KERN_ERR,
3165 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3166 EXPECT_BEGIN(KERN_ERR,
3167 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3168 EXPECT_BEGIN(KERN_ERR,
3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3170 EXPECT_BEGIN(KERN_ERR,
3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3172 EXPECT_BEGIN(KERN_ERR,
3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3174 EXPECT_BEGIN(KERN_ERR,
3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3176 EXPECT_BEGIN(KERN_ERR,
3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3178 EXPECT_BEGIN(KERN_ERR,
3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3180 EXPECT_BEGIN(KERN_ERR,
3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3182 EXPECT_BEGIN(KERN_ERR,
3183 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3184 EXPECT_BEGIN(KERN_ERR,
3185 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3186
3187 ret = overlay_data_apply("overlay", NULL);
3188
3189 EXPECT_END(KERN_ERR,
3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3191 EXPECT_END(KERN_ERR,
3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3193 EXPECT_END(KERN_ERR,
3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3195 EXPECT_END(KERN_ERR,
3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3197 EXPECT_END(KERN_ERR,
3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3199 EXPECT_END(KERN_ERR,
3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3201 EXPECT_END(KERN_ERR,
3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3203 EXPECT_END(KERN_ERR,
3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3205 EXPECT_END(KERN_ERR,
3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3207 EXPECT_END(KERN_ERR,
3208 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3209 EXPECT_END(KERN_ERR,
3210 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3211
3212 unittest(ret, "Adding overlay 'overlay' failed\n");
3213
3214 EXPECT_BEGIN(KERN_ERR,
3215 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3216 EXPECT_BEGIN(KERN_ERR,
3217 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3218
3219 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3220 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3221
3222 EXPECT_END(KERN_ERR,
3223 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3224 EXPECT_END(KERN_ERR,
3225 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3226
3227 EXPECT_BEGIN(KERN_ERR,
3228 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3229 EXPECT_BEGIN(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_BEGIN(KERN_ERR,
3232 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3233
3234 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3235 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3236
3237 EXPECT_END(KERN_ERR,
3238 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3239 EXPECT_END(KERN_ERR,
3240 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3241 EXPECT_END(KERN_ERR,
3242 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3243
3244 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3245 "Adding overlay 'overlay_bad_phandle' failed\n");
3246
3247 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3248 "Adding overlay 'overlay_bad_symbol' failed\n");
3249
3250 return;
3251
3252err_unlock:
3253 mutex_unlock(&of_mutex);
3254}
3255
3256#else
3257
3258static inline __init void of_unittest_overlay_high_level(void) {}
3259
3260#endif
3261
3262static int __init of_unittest(void)
3263{
3264 struct device_node *np;
3265 int res;
3266
3267 pr_info("start of unittest - you will see error messages\n");
3268
3269
3270
3271 if (IS_ENABLED(CONFIG_UML))
3272 unittest_unflatten_overlay_base();
3273
3274 res = unittest_data_add();
3275 if (res)
3276 return res;
3277 if (!of_aliases)
3278 of_aliases = of_find_node_by_path("/aliases");
3279
3280 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3281 if (!np) {
3282 pr_info("No testcase data in device tree; not running tests\n");
3283 return 0;
3284 }
3285 of_node_put(np);
3286
3287 of_unittest_check_tree_linkage();
3288 of_unittest_check_phandles();
3289 of_unittest_find_node_by_name();
3290 of_unittest_dynamic();
3291 of_unittest_parse_phandle_with_args();
3292 of_unittest_parse_phandle_with_args_map();
3293 of_unittest_printf();
3294 of_unittest_property_string();
3295 of_unittest_property_copy();
3296 of_unittest_changeset();
3297 of_unittest_parse_interrupts();
3298 of_unittest_parse_interrupts_extended();
3299 of_unittest_dma_get_max_cpu_address();
3300 of_unittest_parse_dma_ranges();
3301 of_unittest_pci_dma_ranges();
3302 of_unittest_match_node();
3303 of_unittest_platform_populate();
3304 of_unittest_overlay();
3305
3306
3307 of_unittest_check_tree_linkage();
3308
3309 of_unittest_overlay_high_level();
3310
3311 pr_info("end of unittest - %i passed, %i failed\n",
3312 unittest_results.passed, unittest_results.failed);
3313
3314 return 0;
3315}
3316late_initcall(of_unittest);
3317