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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Self tests for device tree subsystem
4 */
5
6#define pr_fmt(fmt) "### dt-test ### " fmt
7
8#include <linux/memblock.h>
9#include <linux/clk.h>
10#include <linux/err.h>
11#include <linux/errno.h>
12#include <linux/hashtable.h>
13#include <linux/libfdt.h>
14#include <linux/of.h>
15#include <linux/of_address.h>
16#include <linux/of_fdt.h>
17#include <linux/of_irq.h>
18#include <linux/of_platform.h>
19#include <linux/list.h>
20#include <linux/mutex.h>
21#include <linux/slab.h>
22#include <linux/device.h>
23#include <linux/platform_device.h>
24
25#include <linux/i2c.h>
26#include <linux/i2c-mux.h>
27#include <linux/gpio/driver.h>
28
29#include <linux/bitops.h>
30
31#include "of_private.h"
32
33static struct unittest_results {
34 int passed;
35 int failed;
36} unittest_results;
37
38#define unittest(result, fmt, ...) ({ \
39 bool failed = !(result); \
40 if (failed) { \
41 unittest_results.failed++; \
42 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
43 } else { \
44 unittest_results.passed++; \
45 pr_debug("pass %s():%i\n", __func__, __LINE__); \
46 } \
47 failed; \
48})
49
50/*
51 * Expected message may have a message level other than KERN_INFO.
52 * Print the expected message only if the current loglevel will allow
53 * the actual message to print.
54 *
55 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by
56 * pr_debug().
57 */
58#define EXPECT_BEGIN(level, fmt, ...) \
59 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
60
61#define EXPECT_END(level, fmt, ...) \
62 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
63
64static void __init of_unittest_find_node_by_name(void)
65{
66 struct device_node *np;
67 const char *options, *name;
68
69 np = of_find_node_by_path("/testcase-data");
70 name = kasprintf(GFP_KERNEL, "%pOF", np);
71 unittest(np && !strcmp("/testcase-data", name),
72 "find /testcase-data failed\n");
73 of_node_put(np);
74 kfree(name);
75
76 /* Test if trailing '/' works */
77 np = of_find_node_by_path("/testcase-data/");
78 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
79
80 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
81 name = kasprintf(GFP_KERNEL, "%pOF", np);
82 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
83 "find /testcase-data/phandle-tests/consumer-a failed\n");
84 of_node_put(np);
85 kfree(name);
86
87 np = of_find_node_by_path("testcase-alias");
88 name = kasprintf(GFP_KERNEL, "%pOF", np);
89 unittest(np && !strcmp("/testcase-data", name),
90 "find testcase-alias failed\n");
91 of_node_put(np);
92 kfree(name);
93
94 /* Test if trailing '/' works on aliases */
95 np = of_find_node_by_path("testcase-alias/");
96 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
97
98 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
99 name = kasprintf(GFP_KERNEL, "%pOF", np);
100 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
101 "find testcase-alias/phandle-tests/consumer-a failed\n");
102 of_node_put(np);
103 kfree(name);
104
105 np = of_find_node_by_path("/testcase-data/missing-path");
106 unittest(!np, "non-existent path returned node %pOF\n", np);
107 of_node_put(np);
108
109 np = of_find_node_by_path("missing-alias");
110 unittest(!np, "non-existent alias returned node %pOF\n", np);
111 of_node_put(np);
112
113 np = of_find_node_by_path("testcase-alias/missing-path");
114 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
115 of_node_put(np);
116
117 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
118 unittest(np && !strcmp("testoption", options),
119 "option path test failed\n");
120 of_node_put(np);
121
122 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
123 unittest(np && !strcmp("test/option", options),
124 "option path test, subcase #1 failed\n");
125 of_node_put(np);
126
127 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
128 unittest(np && !strcmp("test/option", options),
129 "option path test, subcase #2 failed\n");
130 of_node_put(np);
131
132 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
133 unittest(np, "NULL option path test failed\n");
134 of_node_put(np);
135
136 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
137 &options);
138 unittest(np && !strcmp("testaliasoption", options),
139 "option alias path test failed\n");
140 of_node_put(np);
141
142 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
143 &options);
144 unittest(np && !strcmp("test/alias/option", options),
145 "option alias path test, subcase #1 failed\n");
146 of_node_put(np);
147
148 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
149 unittest(np, "NULL option alias path test failed\n");
150 of_node_put(np);
151
152 options = "testoption";
153 np = of_find_node_opts_by_path("testcase-alias", &options);
154 unittest(np && !options, "option clearing test failed\n");
155 of_node_put(np);
156
157 options = "testoption";
158 np = of_find_node_opts_by_path("/", &options);
159 unittest(np && !options, "option clearing root node test failed\n");
160 of_node_put(np);
161}
162
163static void __init of_unittest_dynamic(void)
164{
165 struct device_node *np;
166 struct property *prop;
167
168 np = of_find_node_by_path("/testcase-data");
169 if (!np) {
170 pr_err("missing testcase data\n");
171 return;
172 }
173
174 /* Array of 4 properties for the purpose of testing */
175 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
176 if (!prop) {
177 unittest(0, "kzalloc() failed\n");
178 return;
179 }
180
181 /* Add a new property - should pass*/
182 prop->name = "new-property";
183 prop->value = "new-property-data";
184 prop->length = strlen(prop->value) + 1;
185 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
186
187 /* Try to add an existing property - should fail */
188 prop++;
189 prop->name = "new-property";
190 prop->value = "new-property-data-should-fail";
191 prop->length = strlen(prop->value) + 1;
192 unittest(of_add_property(np, prop) != 0,
193 "Adding an existing property should have failed\n");
194
195 /* Try to modify an existing property - should pass */
196 prop->value = "modify-property-data-should-pass";
197 prop->length = strlen(prop->value) + 1;
198 unittest(of_update_property(np, prop) == 0,
199 "Updating an existing property should have passed\n");
200
201 /* Try to modify non-existent property - should pass*/
202 prop++;
203 prop->name = "modify-property";
204 prop->value = "modify-missing-property-data-should-pass";
205 prop->length = strlen(prop->value) + 1;
206 unittest(of_update_property(np, prop) == 0,
207 "Updating a missing property should have passed\n");
208
209 /* Remove property - should pass */
210 unittest(of_remove_property(np, prop) == 0,
211 "Removing a property should have passed\n");
212
213 /* Adding very large property - should pass */
214 prop++;
215 prop->name = "large-property-PAGE_SIZEx8";
216 prop->length = PAGE_SIZE * 8;
217 prop->value = kzalloc(prop->length, GFP_KERNEL);
218 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
219 if (prop->value)
220 unittest(of_add_property(np, prop) == 0,
221 "Adding a large property should have passed\n");
222}
223
224static int __init of_unittest_check_node_linkage(struct device_node *np)
225{
226 struct device_node *child;
227 int count = 0, rc;
228
229 for_each_child_of_node(np, child) {
230 if (child->parent != np) {
231 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
232 child, np);
233 rc = -EINVAL;
234 goto put_child;
235 }
236
237 rc = of_unittest_check_node_linkage(child);
238 if (rc < 0)
239 goto put_child;
240 count += rc;
241 }
242
243 return count + 1;
244put_child:
245 of_node_put(child);
246 return rc;
247}
248
249static void __init of_unittest_check_tree_linkage(void)
250{
251 struct device_node *np;
252 int allnode_count = 0, child_count;
253
254 if (!of_root)
255 return;
256
257 for_each_of_allnodes(np)
258 allnode_count++;
259 child_count = of_unittest_check_node_linkage(of_root);
260
261 unittest(child_count > 0, "Device node data structure is corrupted\n");
262 unittest(child_count == allnode_count,
263 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
264 allnode_count, child_count);
265 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
266}
267
268static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
269 const char *expected)
270{
271 unsigned char *buf;
272 int buf_size;
273 int size, i;
274
275 buf_size = strlen(expected) + 10;
276 buf = kmalloc(buf_size, GFP_KERNEL);
277 if (!buf)
278 return;
279
280 /* Baseline; check conversion with a large size limit */
281 memset(buf, 0xff, buf_size);
282 size = snprintf(buf, buf_size - 2, fmt, np);
283
284 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
285 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
286 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
287 fmt, expected, buf);
288
289 /* Make sure length limits work */
290 size++;
291 for (i = 0; i < 2; i++, size--) {
292 /* Clear the buffer, and make sure it works correctly still */
293 memset(buf, 0xff, buf_size);
294 snprintf(buf, size+1, fmt, np);
295 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
296 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
297 size, fmt, expected, buf);
298 }
299 kfree(buf);
300}
301
302static void __init of_unittest_printf(void)
303{
304 struct device_node *np;
305 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
306 char phandle_str[16] = "";
307
308 np = of_find_node_by_path(full_name);
309 if (!np) {
310 unittest(np, "testcase data missing\n");
311 return;
312 }
313
314 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
315
316 of_unittest_printf_one(np, "%pOF", full_name);
317 of_unittest_printf_one(np, "%pOFf", full_name);
318 of_unittest_printf_one(np, "%pOFn", "dev");
319 of_unittest_printf_one(np, "%2pOFn", "dev");
320 of_unittest_printf_one(np, "%5pOFn", " dev");
321 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
322 of_unittest_printf_one(np, "%pOFp", phandle_str);
323 of_unittest_printf_one(np, "%pOFP", "dev@100");
324 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
325 of_unittest_printf_one(np, "%10pOFP", " dev@100");
326 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
327 of_unittest_printf_one(of_root, "%pOFP", "/");
328 of_unittest_printf_one(np, "%pOFF", "----");
329 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
330 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
331 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
332 of_unittest_printf_one(np, "%pOFC",
333 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
334}
335
336struct node_hash {
337 struct hlist_node node;
338 struct device_node *np;
339};
340
341static DEFINE_HASHTABLE(phandle_ht, 8);
342static void __init of_unittest_check_phandles(void)
343{
344 struct device_node *np;
345 struct node_hash *nh;
346 struct hlist_node *tmp;
347 int i, dup_count = 0, phandle_count = 0;
348
349 for_each_of_allnodes(np) {
350 if (!np->phandle)
351 continue;
352
353 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
354 if (nh->np->phandle == np->phandle) {
355 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
356 np->phandle, nh->np, np);
357 dup_count++;
358 break;
359 }
360 }
361
362 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
363 if (!nh)
364 return;
365
366 nh->np = np;
367 hash_add(phandle_ht, &nh->node, np->phandle);
368 phandle_count++;
369 }
370 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
371 dup_count, phandle_count);
372
373 /* Clean up */
374 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
375 hash_del(&nh->node);
376 kfree(nh);
377 }
378}
379
380static void __init of_unittest_parse_phandle_with_args(void)
381{
382 struct device_node *np;
383 struct of_phandle_args args;
384 int i, rc;
385
386 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
387 if (!np) {
388 pr_err("missing testcase data\n");
389 return;
390 }
391
392 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
393 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
394
395 for (i = 0; i < 8; i++) {
396 bool passed = true;
397
398 memset(&args, 0, sizeof(args));
399 rc = of_parse_phandle_with_args(np, "phandle-list",
400 "#phandle-cells", i, &args);
401
402 /* Test the values from tests-phandle.dtsi */
403 switch (i) {
404 case 0:
405 passed &= !rc;
406 passed &= (args.args_count == 1);
407 passed &= (args.args[0] == (i + 1));
408 break;
409 case 1:
410 passed &= !rc;
411 passed &= (args.args_count == 2);
412 passed &= (args.args[0] == (i + 1));
413 passed &= (args.args[1] == 0);
414 break;
415 case 2:
416 passed &= (rc == -ENOENT);
417 break;
418 case 3:
419 passed &= !rc;
420 passed &= (args.args_count == 3);
421 passed &= (args.args[0] == (i + 1));
422 passed &= (args.args[1] == 4);
423 passed &= (args.args[2] == 3);
424 break;
425 case 4:
426 passed &= !rc;
427 passed &= (args.args_count == 2);
428 passed &= (args.args[0] == (i + 1));
429 passed &= (args.args[1] == 100);
430 break;
431 case 5:
432 passed &= !rc;
433 passed &= (args.args_count == 0);
434 break;
435 case 6:
436 passed &= !rc;
437 passed &= (args.args_count == 1);
438 passed &= (args.args[0] == (i + 1));
439 break;
440 case 7:
441 passed &= (rc == -ENOENT);
442 break;
443 default:
444 passed = false;
445 }
446
447 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
448 i, args.np, rc);
449 }
450
451 /* Check for missing list property */
452 memset(&args, 0, sizeof(args));
453 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
454 "#phandle-cells", 0, &args);
455 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
456 rc = of_count_phandle_with_args(np, "phandle-list-missing",
457 "#phandle-cells");
458 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
459
460 /* Check for missing cells property */
461 memset(&args, 0, sizeof(args));
462
463 EXPECT_BEGIN(KERN_INFO,
464 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
465
466 rc = of_parse_phandle_with_args(np, "phandle-list",
467 "#phandle-cells-missing", 0, &args);
468
469 EXPECT_END(KERN_INFO,
470 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
471
472 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
473
474 EXPECT_BEGIN(KERN_INFO,
475 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
476
477 rc = of_count_phandle_with_args(np, "phandle-list",
478 "#phandle-cells-missing");
479
480 EXPECT_END(KERN_INFO,
481 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
482
483 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
484
485 /* Check for bad phandle in list */
486 memset(&args, 0, sizeof(args));
487
488 EXPECT_BEGIN(KERN_INFO,
489 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
490
491 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
492 "#phandle-cells", 0, &args);
493
494 EXPECT_END(KERN_INFO,
495 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
496
497 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
498
499 EXPECT_BEGIN(KERN_INFO,
500 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
501
502 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
503 "#phandle-cells");
504
505 EXPECT_END(KERN_INFO,
506 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
507
508 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
509
510 /* Check for incorrectly formed argument list */
511 memset(&args, 0, sizeof(args));
512
513 EXPECT_BEGIN(KERN_INFO,
514 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
515
516 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
517 "#phandle-cells", 1, &args);
518
519 EXPECT_END(KERN_INFO,
520 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
521
522 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
523
524 EXPECT_BEGIN(KERN_INFO,
525 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
526
527 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
528 "#phandle-cells");
529
530 EXPECT_END(KERN_INFO,
531 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
532
533 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
534}
535
536static void __init of_unittest_parse_phandle_with_args_map(void)
537{
538 struct device_node *np, *p0, *p1, *p2, *p3;
539 struct of_phandle_args args;
540 int i, rc;
541
542 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
543 if (!np) {
544 pr_err("missing testcase data\n");
545 return;
546 }
547
548 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
549 if (!p0) {
550 pr_err("missing testcase data\n");
551 return;
552 }
553
554 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
555 if (!p1) {
556 pr_err("missing testcase data\n");
557 return;
558 }
559
560 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
561 if (!p2) {
562 pr_err("missing testcase data\n");
563 return;
564 }
565
566 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
567 if (!p3) {
568 pr_err("missing testcase data\n");
569 return;
570 }
571
572 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
573 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
574
575 for (i = 0; i < 8; i++) {
576 bool passed = true;
577
578 memset(&args, 0, sizeof(args));
579 rc = of_parse_phandle_with_args_map(np, "phandle-list",
580 "phandle", i, &args);
581
582 /* Test the values from tests-phandle.dtsi */
583 switch (i) {
584 case 0:
585 passed &= !rc;
586 passed &= (args.np == p1);
587 passed &= (args.args_count == 1);
588 passed &= (args.args[0] == 1);
589 break;
590 case 1:
591 passed &= !rc;
592 passed &= (args.np == p3);
593 passed &= (args.args_count == 3);
594 passed &= (args.args[0] == 2);
595 passed &= (args.args[1] == 5);
596 passed &= (args.args[2] == 3);
597 break;
598 case 2:
599 passed &= (rc == -ENOENT);
600 break;
601 case 3:
602 passed &= !rc;
603 passed &= (args.np == p0);
604 passed &= (args.args_count == 0);
605 break;
606 case 4:
607 passed &= !rc;
608 passed &= (args.np == p1);
609 passed &= (args.args_count == 1);
610 passed &= (args.args[0] == 3);
611 break;
612 case 5:
613 passed &= !rc;
614 passed &= (args.np == p0);
615 passed &= (args.args_count == 0);
616 break;
617 case 6:
618 passed &= !rc;
619 passed &= (args.np == p2);
620 passed &= (args.args_count == 2);
621 passed &= (args.args[0] == 15);
622 passed &= (args.args[1] == 0x20);
623 break;
624 case 7:
625 passed &= (rc == -ENOENT);
626 break;
627 default:
628 passed = false;
629 }
630
631 unittest(passed, "index %i - data error on node %s rc=%i\n",
632 i, args.np->full_name, rc);
633 }
634
635 /* Check for missing list property */
636 memset(&args, 0, sizeof(args));
637 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
638 "phandle", 0, &args);
639 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
640
641 /* Check for missing cells,map,mask property */
642 memset(&args, 0, sizeof(args));
643
644 EXPECT_BEGIN(KERN_INFO,
645 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
646
647 rc = of_parse_phandle_with_args_map(np, "phandle-list",
648 "phandle-missing", 0, &args);
649 EXPECT_END(KERN_INFO,
650 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
651
652 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
653
654 /* Check for bad phandle in list */
655 memset(&args, 0, sizeof(args));
656
657 EXPECT_BEGIN(KERN_INFO,
658 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
659
660 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
661 "phandle", 0, &args);
662 EXPECT_END(KERN_INFO,
663 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
664
665 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
666
667 /* Check for incorrectly formed argument list */
668 memset(&args, 0, sizeof(args));
669
670 EXPECT_BEGIN(KERN_INFO,
671 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
672
673 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
674 "phandle", 1, &args);
675 EXPECT_END(KERN_INFO,
676 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
677
678 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
679}
680
681static void __init of_unittest_property_string(void)
682{
683 const char *strings[4];
684 struct device_node *np;
685 int rc;
686
687 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
688 if (!np) {
689 pr_err("No testcase data in device tree\n");
690 return;
691 }
692
693 rc = of_property_match_string(np, "phandle-list-names", "first");
694 unittest(rc == 0, "first expected:0 got:%i\n", rc);
695 rc = of_property_match_string(np, "phandle-list-names", "second");
696 unittest(rc == 1, "second expected:1 got:%i\n", rc);
697 rc = of_property_match_string(np, "phandle-list-names", "third");
698 unittest(rc == 2, "third expected:2 got:%i\n", rc);
699 rc = of_property_match_string(np, "phandle-list-names", "fourth");
700 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
701 rc = of_property_match_string(np, "missing-property", "blah");
702 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
703 rc = of_property_match_string(np, "empty-property", "blah");
704 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
705 rc = of_property_match_string(np, "unterminated-string", "blah");
706 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
707
708 /* of_property_count_strings() tests */
709 rc = of_property_count_strings(np, "string-property");
710 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
711 rc = of_property_count_strings(np, "phandle-list-names");
712 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
713 rc = of_property_count_strings(np, "unterminated-string");
714 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
715 rc = of_property_count_strings(np, "unterminated-string-list");
716 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
717
718 /* of_property_read_string_index() tests */
719 rc = of_property_read_string_index(np, "string-property", 0, strings);
720 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
721 strings[0] = NULL;
722 rc = of_property_read_string_index(np, "string-property", 1, strings);
723 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
724 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
725 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
726 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
727 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
728 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
729 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
730 strings[0] = NULL;
731 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
732 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
733 strings[0] = NULL;
734 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
735 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
736 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
737 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
738 strings[0] = NULL;
739 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
740 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
741 strings[1] = NULL;
742
743 /* of_property_read_string_array() tests */
744 rc = of_property_read_string_array(np, "string-property", strings, 4);
745 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
746 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
747 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
748 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
749 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
750 /* -- An incorrectly formed string should cause a failure */
751 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
752 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
753 /* -- parsing the correctly formed strings should still work: */
754 strings[2] = NULL;
755 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
756 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
757 strings[1] = NULL;
758 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
759 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
760}
761
762#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
763 (p1)->value && (p2)->value && \
764 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
765 !strcmp((p1)->name, (p2)->name))
766static void __init of_unittest_property_copy(void)
767{
768#ifdef CONFIG_OF_DYNAMIC
769 struct property p1 = { .name = "p1", .length = 0, .value = "" };
770 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
771 struct property *new;
772
773 new = __of_prop_dup(&p1, GFP_KERNEL);
774 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
775 kfree(new->value);
776 kfree(new->name);
777 kfree(new);
778
779 new = __of_prop_dup(&p2, GFP_KERNEL);
780 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
781 kfree(new->value);
782 kfree(new->name);
783 kfree(new);
784#endif
785}
786
787static void __init of_unittest_changeset(void)
788{
789#ifdef CONFIG_OF_DYNAMIC
790 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
791 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
792 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
793 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
794 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
795 struct property *ppremove;
796 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np;
797 struct of_changeset chgset;
798
799 n1 = __of_node_dup(NULL, "n1");
800 unittest(n1, "testcase setup failure\n");
801
802 n2 = __of_node_dup(NULL, "n2");
803 unittest(n2, "testcase setup failure\n");
804
805 n21 = __of_node_dup(NULL, "n21");
806 unittest(n21, "testcase setup failure %p\n", n21);
807
808 nchangeset = of_find_node_by_path("/testcase-data/changeset");
809 nremove = of_get_child_by_name(nchangeset, "node-remove");
810 unittest(nremove, "testcase setup failure\n");
811
812 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
813 unittest(ppadd, "testcase setup failure\n");
814
815 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
816 unittest(ppname_n1, "testcase setup failure\n");
817
818 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
819 unittest(ppname_n2, "testcase setup failure\n");
820
821 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
822 unittest(ppname_n21, "testcase setup failure\n");
823
824 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
825 unittest(ppupdate, "testcase setup failure\n");
826
827 parent = nchangeset;
828 n1->parent = parent;
829 n2->parent = parent;
830 n21->parent = n2;
831
832 ppremove = of_find_property(parent, "prop-remove", NULL);
833 unittest(ppremove, "failed to find removal prop");
834
835 of_changeset_init(&chgset);
836
837 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
838 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
839
840 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
841 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
842
843 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
844 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
845
846 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
847
848 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
849 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
850 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
851
852 unittest(!of_changeset_apply(&chgset), "apply failed\n");
853
854 of_node_put(nchangeset);
855
856 /* Make sure node names are constructed correctly */
857 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
858 "'%pOF' not added\n", n21);
859 of_node_put(np);
860
861 unittest(!of_changeset_revert(&chgset), "revert failed\n");
862
863 of_changeset_destroy(&chgset);
864
865 of_node_put(n1);
866 of_node_put(n2);
867 of_node_put(n21);
868#endif
869}
870
871static void __init of_unittest_dma_ranges_one(const char *path,
872 u64 expect_dma_addr, u64 expect_paddr, u64 expect_size)
873{
874 struct device_node *np;
875 u64 dma_addr, paddr, size;
876 int rc;
877
878 np = of_find_node_by_path(path);
879 if (!np) {
880 pr_err("missing testcase data\n");
881 return;
882 }
883
884 rc = of_dma_get_range(np, &dma_addr, &paddr, &size);
885
886 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
887 if (!rc) {
888 unittest(size == expect_size,
889 "of_dma_get_range wrong size on node %pOF size=%llx\n", np, size);
890 unittest(paddr == expect_paddr,
891 "of_dma_get_range wrong phys addr (%llx) on node %pOF", paddr, np);
892 unittest(dma_addr == expect_dma_addr,
893 "of_dma_get_range wrong DMA addr (%llx) on node %pOF", dma_addr, np);
894 }
895 of_node_put(np);
896}
897
898static void __init of_unittest_parse_dma_ranges(void)
899{
900 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
901 0x0, 0x20000000, 0x40000000);
902 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
903 0x100000000, 0x20000000, 0x2000000000);
904 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
905 0x80000000, 0x20000000, 0x10000000);
906}
907
908static void __init of_unittest_pci_dma_ranges(void)
909{
910 struct device_node *np;
911 struct of_pci_range range;
912 struct of_pci_range_parser parser;
913 int i = 0;
914
915 if (!IS_ENABLED(CONFIG_PCI))
916 return;
917
918 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
919 if (!np) {
920 pr_err("missing testcase data\n");
921 return;
922 }
923
924 if (of_pci_dma_range_parser_init(&parser, np)) {
925 pr_err("missing dma-ranges property\n");
926 return;
927 }
928
929 /*
930 * Get the dma-ranges from the device tree
931 */
932 for_each_of_pci_range(&parser, &range) {
933 if (!i) {
934 unittest(range.size == 0x10000000,
935 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
936 np, range.size);
937 unittest(range.cpu_addr == 0x20000000,
938 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
939 range.cpu_addr, np);
940 unittest(range.pci_addr == 0x80000000,
941 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
942 range.pci_addr, np);
943 } else {
944 unittest(range.size == 0x10000000,
945 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
946 np, range.size);
947 unittest(range.cpu_addr == 0x40000000,
948 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
949 range.cpu_addr, np);
950 unittest(range.pci_addr == 0xc0000000,
951 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
952 range.pci_addr, np);
953 }
954 i++;
955 }
956
957 of_node_put(np);
958}
959
960static void __init of_unittest_parse_interrupts(void)
961{
962 struct device_node *np;
963 struct of_phandle_args args;
964 int i, rc;
965
966 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
967 return;
968
969 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
970 if (!np) {
971 pr_err("missing testcase data\n");
972 return;
973 }
974
975 for (i = 0; i < 4; i++) {
976 bool passed = true;
977
978 memset(&args, 0, sizeof(args));
979 rc = of_irq_parse_one(np, i, &args);
980
981 passed &= !rc;
982 passed &= (args.args_count == 1);
983 passed &= (args.args[0] == (i + 1));
984
985 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
986 i, args.np, rc);
987 }
988 of_node_put(np);
989
990 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
991 if (!np) {
992 pr_err("missing testcase data\n");
993 return;
994 }
995
996 for (i = 0; i < 4; i++) {
997 bool passed = true;
998
999 memset(&args, 0, sizeof(args));
1000 rc = of_irq_parse_one(np, i, &args);
1001
1002 /* Test the values from tests-phandle.dtsi */
1003 switch (i) {
1004 case 0:
1005 passed &= !rc;
1006 passed &= (args.args_count == 1);
1007 passed &= (args.args[0] == 9);
1008 break;
1009 case 1:
1010 passed &= !rc;
1011 passed &= (args.args_count == 3);
1012 passed &= (args.args[0] == 10);
1013 passed &= (args.args[1] == 11);
1014 passed &= (args.args[2] == 12);
1015 break;
1016 case 2:
1017 passed &= !rc;
1018 passed &= (args.args_count == 2);
1019 passed &= (args.args[0] == 13);
1020 passed &= (args.args[1] == 14);
1021 break;
1022 case 3:
1023 passed &= !rc;
1024 passed &= (args.args_count == 2);
1025 passed &= (args.args[0] == 15);
1026 passed &= (args.args[1] == 16);
1027 break;
1028 default:
1029 passed = false;
1030 }
1031 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1032 i, args.np, rc);
1033 }
1034 of_node_put(np);
1035}
1036
1037static void __init of_unittest_parse_interrupts_extended(void)
1038{
1039 struct device_node *np;
1040 struct of_phandle_args args;
1041 int i, rc;
1042
1043 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1044 return;
1045
1046 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1047 if (!np) {
1048 pr_err("missing testcase data\n");
1049 return;
1050 }
1051
1052 for (i = 0; i < 7; i++) {
1053 bool passed = true;
1054
1055 memset(&args, 0, sizeof(args));
1056 rc = of_irq_parse_one(np, i, &args);
1057
1058 /* Test the values from tests-phandle.dtsi */
1059 switch (i) {
1060 case 0:
1061 passed &= !rc;
1062 passed &= (args.args_count == 1);
1063 passed &= (args.args[0] == 1);
1064 break;
1065 case 1:
1066 passed &= !rc;
1067 passed &= (args.args_count == 3);
1068 passed &= (args.args[0] == 2);
1069 passed &= (args.args[1] == 3);
1070 passed &= (args.args[2] == 4);
1071 break;
1072 case 2:
1073 passed &= !rc;
1074 passed &= (args.args_count == 2);
1075 passed &= (args.args[0] == 5);
1076 passed &= (args.args[1] == 6);
1077 break;
1078 case 3:
1079 passed &= !rc;
1080 passed &= (args.args_count == 1);
1081 passed &= (args.args[0] == 9);
1082 break;
1083 case 4:
1084 passed &= !rc;
1085 passed &= (args.args_count == 3);
1086 passed &= (args.args[0] == 10);
1087 passed &= (args.args[1] == 11);
1088 passed &= (args.args[2] == 12);
1089 break;
1090 case 5:
1091 passed &= !rc;
1092 passed &= (args.args_count == 2);
1093 passed &= (args.args[0] == 13);
1094 passed &= (args.args[1] == 14);
1095 break;
1096 case 6:
1097 passed &= !rc;
1098 passed &= (args.args_count == 1);
1099 passed &= (args.args[0] == 15);
1100 break;
1101 default:
1102 passed = false;
1103 }
1104
1105 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1106 i, args.np, rc);
1107 }
1108 of_node_put(np);
1109}
1110
1111static const struct of_device_id match_node_table[] = {
1112 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1113 { .data = "B", .type = "type1", }, /* followed by type alone */
1114
1115 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1116 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1117 { .data = "Cc", .name = "name2", .type = "type2", },
1118
1119 { .data = "E", .compatible = "compat3" },
1120 { .data = "G", .compatible = "compat2", },
1121 { .data = "H", .compatible = "compat2", .name = "name5", },
1122 { .data = "I", .compatible = "compat2", .type = "type1", },
1123 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1124 { .data = "K", .compatible = "compat2", .name = "name9", },
1125 {}
1126};
1127
1128static struct {
1129 const char *path;
1130 const char *data;
1131} match_node_tests[] = {
1132 { .path = "/testcase-data/match-node/name0", .data = "A", },
1133 { .path = "/testcase-data/match-node/name1", .data = "B", },
1134 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1135 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1136 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1137 { .path = "/testcase-data/match-node/name3", .data = "E", },
1138 { .path = "/testcase-data/match-node/name4", .data = "G", },
1139 { .path = "/testcase-data/match-node/name5", .data = "H", },
1140 { .path = "/testcase-data/match-node/name6", .data = "G", },
1141 { .path = "/testcase-data/match-node/name7", .data = "I", },
1142 { .path = "/testcase-data/match-node/name8", .data = "J", },
1143 { .path = "/testcase-data/match-node/name9", .data = "K", },
1144};
1145
1146static void __init of_unittest_match_node(void)
1147{
1148 struct device_node *np;
1149 const struct of_device_id *match;
1150 int i;
1151
1152 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1153 np = of_find_node_by_path(match_node_tests[i].path);
1154 if (!np) {
1155 unittest(0, "missing testcase node %s\n",
1156 match_node_tests[i].path);
1157 continue;
1158 }
1159
1160 match = of_match_node(match_node_table, np);
1161 if (!match) {
1162 unittest(0, "%s didn't match anything\n",
1163 match_node_tests[i].path);
1164 continue;
1165 }
1166
1167 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1168 unittest(0, "%s got wrong match. expected %s, got %s\n",
1169 match_node_tests[i].path, match_node_tests[i].data,
1170 (const char *)match->data);
1171 continue;
1172 }
1173 unittest(1, "passed");
1174 }
1175}
1176
1177static struct resource test_bus_res = {
1178 .start = 0xfffffff8,
1179 .end = 0xfffffff9,
1180 .flags = IORESOURCE_MEM,
1181};
1182static const struct platform_device_info test_bus_info = {
1183 .name = "unittest-bus",
1184};
1185static void __init of_unittest_platform_populate(void)
1186{
1187 int irq, rc;
1188 struct device_node *np, *child, *grandchild;
1189 struct platform_device *pdev, *test_bus;
1190 const struct of_device_id match[] = {
1191 { .compatible = "test-device", },
1192 {}
1193 };
1194
1195 np = of_find_node_by_path("/testcase-data");
1196 of_platform_default_populate(np, NULL, NULL);
1197
1198 /* Test that a missing irq domain returns -EPROBE_DEFER */
1199 np = of_find_node_by_path("/testcase-data/testcase-device1");
1200 pdev = of_find_device_by_node(np);
1201 unittest(pdev, "device 1 creation failed\n");
1202
1203 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1204 irq = platform_get_irq(pdev, 0);
1205 unittest(irq == -EPROBE_DEFER,
1206 "device deferred probe failed - %d\n", irq);
1207
1208 /* Test that a parsing failure does not return -EPROBE_DEFER */
1209 np = of_find_node_by_path("/testcase-data/testcase-device2");
1210 pdev = of_find_device_by_node(np);
1211 unittest(pdev, "device 2 creation failed\n");
1212
1213 EXPECT_BEGIN(KERN_INFO,
1214 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1215
1216 irq = platform_get_irq(pdev, 0);
1217
1218 EXPECT_END(KERN_INFO,
1219 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1220
1221 unittest(irq < 0 && irq != -EPROBE_DEFER,
1222 "device parsing error failed - %d\n", irq);
1223 }
1224
1225 np = of_find_node_by_path("/testcase-data/platform-tests");
1226 unittest(np, "No testcase data in device tree\n");
1227 if (!np)
1228 return;
1229
1230 test_bus = platform_device_register_full(&test_bus_info);
1231 rc = PTR_ERR_OR_ZERO(test_bus);
1232 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1233 if (rc) {
1234 of_node_put(np);
1235 return;
1236 }
1237 test_bus->dev.of_node = np;
1238
1239 /*
1240 * Add a dummy resource to the test bus node after it is
1241 * registered to catch problems with un-inserted resources. The
1242 * DT code doesn't insert the resources, and it has caused the
1243 * kernel to oops in the past. This makes sure the same bug
1244 * doesn't crop up again.
1245 */
1246 platform_device_add_resources(test_bus, &test_bus_res, 1);
1247
1248 of_platform_populate(np, match, NULL, &test_bus->dev);
1249 for_each_child_of_node(np, child) {
1250 for_each_child_of_node(child, grandchild) {
1251 pdev = of_find_device_by_node(grandchild);
1252 unittest(pdev,
1253 "Could not create device for node '%pOFn'\n",
1254 grandchild);
1255 of_dev_put(pdev);
1256 }
1257 }
1258
1259 of_platform_depopulate(&test_bus->dev);
1260 for_each_child_of_node(np, child) {
1261 for_each_child_of_node(child, grandchild)
1262 unittest(!of_find_device_by_node(grandchild),
1263 "device didn't get destroyed '%pOFn'\n",
1264 grandchild);
1265 }
1266
1267 platform_device_unregister(test_bus);
1268 of_node_put(np);
1269}
1270
1271/**
1272 * update_node_properties - adds the properties
1273 * of np into dup node (present in live tree) and
1274 * updates parent of children of np to dup.
1275 *
1276 * @np: node whose properties are being added to the live tree
1277 * @dup: node present in live tree to be updated
1278 */
1279static void update_node_properties(struct device_node *np,
1280 struct device_node *dup)
1281{
1282 struct property *prop;
1283 struct property *save_next;
1284 struct device_node *child;
1285 int ret;
1286
1287 for_each_child_of_node(np, child)
1288 child->parent = dup;
1289
1290 /*
1291 * "unittest internal error: unable to add testdata property"
1292 *
1293 * If this message reports a property in node '/__symbols__' then
1294 * the respective unittest overlay contains a label that has the
1295 * same name as a label in the live devicetree. The label will
1296 * be in the live devicetree only if the devicetree source was
1297 * compiled with the '-@' option. If you encounter this error,
1298 * please consider renaming __all__ of the labels in the unittest
1299 * overlay dts files with an odd prefix that is unlikely to be
1300 * used in a real devicetree.
1301 */
1302
1303 /*
1304 * open code for_each_property_of_node() because of_add_property()
1305 * sets prop->next to NULL
1306 */
1307 for (prop = np->properties; prop != NULL; prop = save_next) {
1308 save_next = prop->next;
1309 ret = of_add_property(dup, prop);
1310 if (ret) {
1311 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1312 continue;
1313 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1314 np, prop->name);
1315 }
1316 }
1317}
1318
1319/**
1320 * attach_node_and_children - attaches nodes
1321 * and its children to live tree.
1322 * CAUTION: misleading function name - if node @np already exists in
1323 * the live tree then children of @np are *not* attached to the live
1324 * tree. This works for the current test devicetree nodes because such
1325 * nodes do not have child nodes.
1326 *
1327 * @np: Node to attach to live tree
1328 */
1329static void attach_node_and_children(struct device_node *np)
1330{
1331 struct device_node *next, *dup, *child;
1332 unsigned long flags;
1333 const char *full_name;
1334
1335 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1336
1337 if (!strcmp(full_name, "/__local_fixups__") ||
1338 !strcmp(full_name, "/__fixups__")) {
1339 kfree(full_name);
1340 return;
1341 }
1342
1343 dup = of_find_node_by_path(full_name);
1344 kfree(full_name);
1345 if (dup) {
1346 update_node_properties(np, dup);
1347 return;
1348 }
1349
1350 child = np->child;
1351 np->child = NULL;
1352
1353 mutex_lock(&of_mutex);
1354 raw_spin_lock_irqsave(&devtree_lock, flags);
1355 np->sibling = np->parent->child;
1356 np->parent->child = np;
1357 of_node_clear_flag(np, OF_DETACHED);
1358 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1359
1360 __of_attach_node_sysfs(np);
1361 mutex_unlock(&of_mutex);
1362
1363 while (child) {
1364 next = child->sibling;
1365 attach_node_and_children(child);
1366 child = next;
1367 }
1368}
1369
1370/**
1371 * unittest_data_add - Reads, copies data from
1372 * linked tree and attaches it to the live tree
1373 */
1374static int __init unittest_data_add(void)
1375{
1376 void *unittest_data;
1377 struct device_node *unittest_data_node, *np;
1378 /*
1379 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1380 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1381 */
1382 extern uint8_t __dtb_testcases_begin[];
1383 extern uint8_t __dtb_testcases_end[];
1384 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1385 int rc;
1386
1387 if (!size) {
1388 pr_warn("%s: No testcase data to attach; not running tests\n",
1389 __func__);
1390 return -ENODATA;
1391 }
1392
1393 /* creating copy */
1394 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
1395 if (!unittest_data)
1396 return -ENOMEM;
1397
1398 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
1399 if (!unittest_data_node) {
1400 pr_warn("%s: No tree to attach; not running tests\n", __func__);
1401 kfree(unittest_data);
1402 return -ENODATA;
1403 }
1404
1405 /*
1406 * This lock normally encloses of_resolve_phandles()
1407 */
1408 of_overlay_mutex_lock();
1409
1410 rc = of_resolve_phandles(unittest_data_node);
1411 if (rc) {
1412 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1413 of_overlay_mutex_unlock();
1414 return -EINVAL;
1415 }
1416
1417 if (!of_root) {
1418 of_root = unittest_data_node;
1419 for_each_of_allnodes(np)
1420 __of_attach_node_sysfs(np);
1421 of_aliases = of_find_node_by_path("/aliases");
1422 of_chosen = of_find_node_by_path("/chosen");
1423 of_overlay_mutex_unlock();
1424 return 0;
1425 }
1426
1427 EXPECT_BEGIN(KERN_INFO,
1428 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1429
1430 /* attach the sub-tree to live tree */
1431 np = unittest_data_node->child;
1432 while (np) {
1433 struct device_node *next = np->sibling;
1434
1435 np->parent = of_root;
1436 attach_node_and_children(np);
1437 np = next;
1438 }
1439
1440 EXPECT_END(KERN_INFO,
1441 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1442
1443 of_overlay_mutex_unlock();
1444
1445 return 0;
1446}
1447
1448#ifdef CONFIG_OF_OVERLAY
1449static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1450
1451static int unittest_probe(struct platform_device *pdev)
1452{
1453 struct device *dev = &pdev->dev;
1454 struct device_node *np = dev->of_node;
1455
1456 if (np == NULL) {
1457 dev_err(dev, "No OF data for device\n");
1458 return -EINVAL;
1459
1460 }
1461
1462 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1463
1464 of_platform_populate(np, NULL, NULL, &pdev->dev);
1465
1466 return 0;
1467}
1468
1469static int unittest_remove(struct platform_device *pdev)
1470{
1471 struct device *dev = &pdev->dev;
1472 struct device_node *np = dev->of_node;
1473
1474 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1475 return 0;
1476}
1477
1478static const struct of_device_id unittest_match[] = {
1479 { .compatible = "unittest", },
1480 {},
1481};
1482
1483static struct platform_driver unittest_driver = {
1484 .probe = unittest_probe,
1485 .remove = unittest_remove,
1486 .driver = {
1487 .name = "unittest",
1488 .of_match_table = of_match_ptr(unittest_match),
1489 },
1490};
1491
1492/* get the platform device instantiated at the path */
1493static struct platform_device *of_path_to_platform_device(const char *path)
1494{
1495 struct device_node *np;
1496 struct platform_device *pdev;
1497
1498 np = of_find_node_by_path(path);
1499 if (np == NULL)
1500 return NULL;
1501
1502 pdev = of_find_device_by_node(np);
1503 of_node_put(np);
1504
1505 return pdev;
1506}
1507
1508/* find out if a platform device exists at that path */
1509static int of_path_platform_device_exists(const char *path)
1510{
1511 struct platform_device *pdev;
1512
1513 pdev = of_path_to_platform_device(path);
1514 platform_device_put(pdev);
1515 return pdev != NULL;
1516}
1517
1518#ifdef CONFIG_OF_GPIO
1519
1520struct unittest_gpio_dev {
1521 struct gpio_chip chip;
1522};
1523
1524static int unittest_gpio_chip_request_count;
1525static int unittest_gpio_probe_count;
1526static int unittest_gpio_probe_pass_count;
1527
1528static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1529{
1530 unittest_gpio_chip_request_count++;
1531
1532 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1533 unittest_gpio_chip_request_count);
1534 return 0;
1535}
1536
1537static int unittest_gpio_probe(struct platform_device *pdev)
1538{
1539 struct unittest_gpio_dev *devptr;
1540 int ret;
1541
1542 unittest_gpio_probe_count++;
1543
1544 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1545 if (!devptr)
1546 return -ENOMEM;
1547
1548 platform_set_drvdata(pdev, devptr);
1549
1550 devptr->chip.of_node = pdev->dev.of_node;
1551 devptr->chip.label = "of-unittest-gpio";
1552 devptr->chip.base = -1; /* dynamic allocation */
1553 devptr->chip.ngpio = 5;
1554 devptr->chip.request = unittest_gpio_chip_request;
1555
1556 ret = gpiochip_add_data(&devptr->chip, NULL);
1557
1558 unittest(!ret,
1559 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1560
1561 if (!ret)
1562 unittest_gpio_probe_pass_count++;
1563 return ret;
1564}
1565
1566static int unittest_gpio_remove(struct platform_device *pdev)
1567{
1568 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1569 struct device *dev = &pdev->dev;
1570 struct device_node *np = pdev->dev.of_node;
1571
1572 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1573
1574 if (!gdev)
1575 return -EINVAL;
1576
1577 if (gdev->chip.base != -1)
1578 gpiochip_remove(&gdev->chip);
1579
1580 platform_set_drvdata(pdev, NULL);
1581 kfree(gdev);
1582
1583 return 0;
1584}
1585
1586static const struct of_device_id unittest_gpio_id[] = {
1587 { .compatible = "unittest-gpio", },
1588 {}
1589};
1590
1591static struct platform_driver unittest_gpio_driver = {
1592 .probe = unittest_gpio_probe,
1593 .remove = unittest_gpio_remove,
1594 .driver = {
1595 .name = "unittest-gpio",
1596 .of_match_table = of_match_ptr(unittest_gpio_id),
1597 },
1598};
1599
1600static void __init of_unittest_overlay_gpio(void)
1601{
1602 int chip_request_count;
1603 int probe_pass_count;
1604 int ret;
1605
1606 /*
1607 * tests: apply overlays before registering driver
1608 * Similar to installing a driver as a module, the
1609 * driver is registered after applying the overlays.
1610 *
1611 * The overlays are applied by overlay_data_apply()
1612 * instead of of_unittest_apply_overlay() so that they
1613 * will not be tracked. Thus they will not be removed
1614 * by of_unittest_destroy_tracked_overlays().
1615 *
1616 * - apply overlay_gpio_01
1617 * - apply overlay_gpio_02a
1618 * - apply overlay_gpio_02b
1619 * - register driver
1620 *
1621 * register driver will result in
1622 * - probe and processing gpio hog for overlay_gpio_01
1623 * - probe for overlay_gpio_02a
1624 * - processing gpio for overlay_gpio_02b
1625 */
1626
1627 probe_pass_count = unittest_gpio_probe_pass_count;
1628 chip_request_count = unittest_gpio_chip_request_count;
1629
1630 /*
1631 * overlay_gpio_01 contains gpio node and child gpio hog node
1632 * overlay_gpio_02a contains gpio node
1633 * overlay_gpio_02b contains child gpio hog node
1634 */
1635
1636 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1637 "Adding overlay 'overlay_gpio_01' failed\n");
1638
1639 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1640 "Adding overlay 'overlay_gpio_02a' failed\n");
1641
1642 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1643 "Adding overlay 'overlay_gpio_02b' failed\n");
1644
1645 /*
1646 * messages are the result of the probes, after the
1647 * driver is registered
1648 */
1649
1650 EXPECT_BEGIN(KERN_INFO,
1651 "GPIO line <<int>> (line-B-input) hogged as input\n");
1652
1653 EXPECT_BEGIN(KERN_INFO,
1654 "GPIO line <<int>> (line-A-input) hogged as input\n");
1655
1656 ret = platform_driver_register(&unittest_gpio_driver);
1657 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1658 return;
1659
1660 EXPECT_END(KERN_INFO,
1661 "GPIO line <<int>> (line-A-input) hogged as input\n");
1662 EXPECT_END(KERN_INFO,
1663 "GPIO line <<int>> (line-B-input) hogged as input\n");
1664
1665 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1666 "unittest_gpio_probe() failed or not called\n");
1667
1668 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1669 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1670 unittest_gpio_chip_request_count - chip_request_count);
1671
1672 /*
1673 * tests: apply overlays after registering driver
1674 *
1675 * Similar to a driver built-in to the kernel, the
1676 * driver is registered before applying the overlays.
1677 *
1678 * overlay_gpio_03 contains gpio node and child gpio hog node
1679 *
1680 * - apply overlay_gpio_03
1681 *
1682 * apply overlay will result in
1683 * - probe and processing gpio hog.
1684 */
1685
1686 probe_pass_count = unittest_gpio_probe_pass_count;
1687 chip_request_count = unittest_gpio_chip_request_count;
1688
1689 EXPECT_BEGIN(KERN_INFO,
1690 "GPIO line <<int>> (line-D-input) hogged as input\n");
1691
1692 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1693
1694 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1695 "Adding overlay 'overlay_gpio_03' failed\n");
1696
1697 EXPECT_END(KERN_INFO,
1698 "GPIO line <<int>> (line-D-input) hogged as input\n");
1699
1700 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1701 "unittest_gpio_probe() failed or not called\n");
1702
1703 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1704 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1705 unittest_gpio_chip_request_count - chip_request_count);
1706
1707 /*
1708 * overlay_gpio_04a contains gpio node
1709 *
1710 * - apply overlay_gpio_04a
1711 *
1712 * apply the overlay will result in
1713 * - probe for overlay_gpio_04a
1714 */
1715
1716 probe_pass_count = unittest_gpio_probe_pass_count;
1717 chip_request_count = unittest_gpio_chip_request_count;
1718
1719 /* overlay_gpio_04a contains gpio node */
1720
1721 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1722 "Adding overlay 'overlay_gpio_04a' failed\n");
1723
1724 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1725 "unittest_gpio_probe() failed or not called\n");
1726
1727 /*
1728 * overlay_gpio_04b contains child gpio hog node
1729 *
1730 * - apply overlay_gpio_04b
1731 *
1732 * apply the overlay will result in
1733 * - processing gpio for overlay_gpio_04b
1734 */
1735
1736 EXPECT_BEGIN(KERN_INFO,
1737 "GPIO line <<int>> (line-C-input) hogged as input\n");
1738
1739 /* overlay_gpio_04b contains child gpio hog node */
1740
1741 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1742 "Adding overlay 'overlay_gpio_04b' failed\n");
1743
1744 EXPECT_END(KERN_INFO,
1745 "GPIO line <<int>> (line-C-input) hogged as input\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#else
1753
1754static void __init of_unittest_overlay_gpio(void)
1755{
1756 /* skip tests */
1757}
1758
1759#endif
1760
1761#if IS_BUILTIN(CONFIG_I2C)
1762
1763/* get the i2c client device instantiated at the path */
1764static struct i2c_client *of_path_to_i2c_client(const char *path)
1765{
1766 struct device_node *np;
1767 struct i2c_client *client;
1768
1769 np = of_find_node_by_path(path);
1770 if (np == NULL)
1771 return NULL;
1772
1773 client = of_find_i2c_device_by_node(np);
1774 of_node_put(np);
1775
1776 return client;
1777}
1778
1779/* find out if a i2c client device exists at that path */
1780static int of_path_i2c_client_exists(const char *path)
1781{
1782 struct i2c_client *client;
1783
1784 client = of_path_to_i2c_client(path);
1785 if (client)
1786 put_device(&client->dev);
1787 return client != NULL;
1788}
1789#else
1790static int of_path_i2c_client_exists(const char *path)
1791{
1792 return 0;
1793}
1794#endif
1795
1796enum overlay_type {
1797 PDEV_OVERLAY,
1798 I2C_OVERLAY
1799};
1800
1801static int of_path_device_type_exists(const char *path,
1802 enum overlay_type ovtype)
1803{
1804 switch (ovtype) {
1805 case PDEV_OVERLAY:
1806 return of_path_platform_device_exists(path);
1807 case I2C_OVERLAY:
1808 return of_path_i2c_client_exists(path);
1809 }
1810 return 0;
1811}
1812
1813static const char *unittest_path(int nr, enum overlay_type ovtype)
1814{
1815 const char *base;
1816 static char buf[256];
1817
1818 switch (ovtype) {
1819 case PDEV_OVERLAY:
1820 base = "/testcase-data/overlay-node/test-bus";
1821 break;
1822 case I2C_OVERLAY:
1823 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1824 break;
1825 default:
1826 buf[0] = '\0';
1827 return buf;
1828 }
1829 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1830 buf[sizeof(buf) - 1] = '\0';
1831 return buf;
1832}
1833
1834static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1835{
1836 const char *path;
1837
1838 path = unittest_path(unittest_nr, ovtype);
1839
1840 switch (ovtype) {
1841 case PDEV_OVERLAY:
1842 return of_path_platform_device_exists(path);
1843 case I2C_OVERLAY:
1844 return of_path_i2c_client_exists(path);
1845 }
1846 return 0;
1847}
1848
1849static const char *overlay_name_from_nr(int nr)
1850{
1851 static char buf[256];
1852
1853 snprintf(buf, sizeof(buf) - 1,
1854 "overlay_%d", nr);
1855 buf[sizeof(buf) - 1] = '\0';
1856
1857 return buf;
1858}
1859
1860static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1861
1862/* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1863
1864#define MAX_UNITTEST_OVERLAYS 256
1865static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1866static int overlay_first_id = -1;
1867
1868static long of_unittest_overlay_tracked(int id)
1869{
1870 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1871 return 0;
1872 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1873}
1874
1875static void of_unittest_track_overlay(int id)
1876{
1877 if (overlay_first_id < 0)
1878 overlay_first_id = id;
1879 id -= overlay_first_id;
1880
1881 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1882 return;
1883 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1884}
1885
1886static void of_unittest_untrack_overlay(int id)
1887{
1888 if (overlay_first_id < 0)
1889 return;
1890 id -= overlay_first_id;
1891 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1892 return;
1893 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1894}
1895
1896static void of_unittest_destroy_tracked_overlays(void)
1897{
1898 int id, ret, defers, ovcs_id;
1899
1900 if (overlay_first_id < 0)
1901 return;
1902
1903 /* try until no defers */
1904 do {
1905 defers = 0;
1906 /* remove in reverse order */
1907 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1908 if (!of_unittest_overlay_tracked(id))
1909 continue;
1910
1911 ovcs_id = id + overlay_first_id;
1912 ret = of_overlay_remove(&ovcs_id);
1913 if (ret == -ENODEV) {
1914 pr_warn("%s: no overlay to destroy for #%d\n",
1915 __func__, id + overlay_first_id);
1916 continue;
1917 }
1918 if (ret != 0) {
1919 defers++;
1920 pr_warn("%s: overlay destroy failed for #%d\n",
1921 __func__, id + overlay_first_id);
1922 continue;
1923 }
1924
1925 of_unittest_untrack_overlay(id);
1926 }
1927 } while (defers > 0);
1928}
1929
1930static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1931{
1932 const char *overlay_name;
1933
1934 overlay_name = overlay_name_from_nr(overlay_nr);
1935
1936 if (!overlay_data_apply(overlay_name, overlay_id)) {
1937 unittest(0, "could not apply overlay \"%s\"\n",
1938 overlay_name);
1939 return -EFAULT;
1940 }
1941 of_unittest_track_overlay(*overlay_id);
1942
1943 return 0;
1944}
1945
1946/* apply an overlay while checking before and after states */
1947static int __init of_unittest_apply_overlay_check(int overlay_nr,
1948 int unittest_nr, int before, int after,
1949 enum overlay_type ovtype)
1950{
1951 int ret, ovcs_id;
1952
1953 /* unittest device must not be in before state */
1954 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1955 unittest(0, "%s with device @\"%s\" %s\n",
1956 overlay_name_from_nr(overlay_nr),
1957 unittest_path(unittest_nr, ovtype),
1958 !before ? "enabled" : "disabled");
1959 return -EINVAL;
1960 }
1961
1962 ovcs_id = 0;
1963 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
1964 if (ret != 0) {
1965 /* of_unittest_apply_overlay already called unittest() */
1966 return ret;
1967 }
1968
1969 /* unittest device must be to set to after state */
1970 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
1971 unittest(0, "%s failed to create @\"%s\" %s\n",
1972 overlay_name_from_nr(overlay_nr),
1973 unittest_path(unittest_nr, ovtype),
1974 !after ? "enabled" : "disabled");
1975 return -EINVAL;
1976 }
1977
1978 return 0;
1979}
1980
1981/* apply an overlay and then revert it while checking before, after states */
1982static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
1983 int unittest_nr, int before, int after,
1984 enum overlay_type ovtype)
1985{
1986 int ret, ovcs_id, save_id;
1987
1988 /* unittest device must be in before state */
1989 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1990 unittest(0, "%s with device @\"%s\" %s\n",
1991 overlay_name_from_nr(overlay_nr),
1992 unittest_path(unittest_nr, ovtype),
1993 !before ? "enabled" : "disabled");
1994 return -EINVAL;
1995 }
1996
1997 /* apply the overlay */
1998 ovcs_id = 0;
1999 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2000 if (ret != 0) {
2001 /* of_unittest_apply_overlay already called unittest() */
2002 return ret;
2003 }
2004
2005 /* unittest device must be in after state */
2006 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2007 unittest(0, "%s failed to create @\"%s\" %s\n",
2008 overlay_name_from_nr(overlay_nr),
2009 unittest_path(unittest_nr, ovtype),
2010 !after ? "enabled" : "disabled");
2011 return -EINVAL;
2012 }
2013
2014 save_id = ovcs_id;
2015 ret = of_overlay_remove(&ovcs_id);
2016 if (ret != 0) {
2017 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2018 overlay_name_from_nr(overlay_nr),
2019 unittest_path(unittest_nr, ovtype));
2020 return ret;
2021 }
2022 of_unittest_untrack_overlay(save_id);
2023
2024 /* unittest device must be again in before state */
2025 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2026 unittest(0, "%s with device @\"%s\" %s\n",
2027 overlay_name_from_nr(overlay_nr),
2028 unittest_path(unittest_nr, ovtype),
2029 !before ? "enabled" : "disabled");
2030 return -EINVAL;
2031 }
2032
2033 return 0;
2034}
2035
2036/* test activation of device */
2037static void __init of_unittest_overlay_0(void)
2038{
2039 int ret;
2040
2041 EXPECT_BEGIN(KERN_INFO,
2042 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2043
2044 /* device should enable */
2045 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2046
2047 EXPECT_END(KERN_INFO,
2048 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2049
2050 if (ret)
2051 return;
2052
2053 unittest(1, "overlay test %d passed\n", 0);
2054}
2055
2056/* test deactivation of device */
2057static void __init of_unittest_overlay_1(void)
2058{
2059 int ret;
2060
2061 EXPECT_BEGIN(KERN_INFO,
2062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2063
2064 /* device should disable */
2065 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2066
2067 EXPECT_END(KERN_INFO,
2068 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2069
2070 if (ret)
2071 return;
2072
2073 unittest(1, "overlay test %d passed\n", 1);
2074
2075}
2076
2077/* test activation of device */
2078static void __init of_unittest_overlay_2(void)
2079{
2080 int ret;
2081
2082 EXPECT_BEGIN(KERN_INFO,
2083 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2084
2085 /* device should enable */
2086 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2087
2088 EXPECT_END(KERN_INFO,
2089 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2090
2091 if (ret)
2092 return;
2093 unittest(1, "overlay test %d passed\n", 2);
2094}
2095
2096/* test deactivation of device */
2097static void __init of_unittest_overlay_3(void)
2098{
2099 int ret;
2100
2101 EXPECT_BEGIN(KERN_INFO,
2102 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2103
2104 /* device should disable */
2105 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2106
2107 EXPECT_END(KERN_INFO,
2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2109
2110 if (ret)
2111 return;
2112
2113 unittest(1, "overlay test %d passed\n", 3);
2114}
2115
2116/* test activation of a full device node */
2117static void __init of_unittest_overlay_4(void)
2118{
2119 /* device should disable */
2120 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2121 return;
2122
2123 unittest(1, "overlay test %d passed\n", 4);
2124}
2125
2126/* test overlay apply/revert sequence */
2127static void __init of_unittest_overlay_5(void)
2128{
2129 int ret;
2130
2131 EXPECT_BEGIN(KERN_INFO,
2132 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2133
2134 /* device should disable */
2135 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2136
2137 EXPECT_END(KERN_INFO,
2138 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2139
2140 if (ret)
2141 return;
2142
2143 unittest(1, "overlay test %d passed\n", 5);
2144}
2145
2146/* test overlay application in sequence */
2147static void __init of_unittest_overlay_6(void)
2148{
2149 int i, ov_id[2], ovcs_id;
2150 int overlay_nr = 6, unittest_nr = 6;
2151 int before = 0, after = 1;
2152 const char *overlay_name;
2153
2154 int ret;
2155
2156 /* unittest device must be in before state */
2157 for (i = 0; i < 2; i++) {
2158 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2159 != before) {
2160 unittest(0, "%s with device @\"%s\" %s\n",
2161 overlay_name_from_nr(overlay_nr + i),
2162 unittest_path(unittest_nr + i,
2163 PDEV_OVERLAY),
2164 !before ? "enabled" : "disabled");
2165 return;
2166 }
2167 }
2168
2169 /* apply the overlays */
2170
2171 EXPECT_BEGIN(KERN_INFO,
2172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2173
2174 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2175
2176 ret = overlay_data_apply(overlay_name, &ovcs_id);
2177
2178 if (!ret) {
2179 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2180 return;
2181 }
2182 ov_id[0] = ovcs_id;
2183 of_unittest_track_overlay(ov_id[0]);
2184
2185 EXPECT_END(KERN_INFO,
2186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2187
2188 EXPECT_BEGIN(KERN_INFO,
2189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2190
2191 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2192
2193 ret = overlay_data_apply(overlay_name, &ovcs_id);
2194
2195 if (!ret) {
2196 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2197 return;
2198 }
2199 ov_id[1] = ovcs_id;
2200 of_unittest_track_overlay(ov_id[1]);
2201
2202 EXPECT_END(KERN_INFO,
2203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2204
2205
2206 for (i = 0; i < 2; i++) {
2207 /* unittest device must be in after state */
2208 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2209 != after) {
2210 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2211 overlay_name_from_nr(overlay_nr + i),
2212 unittest_path(unittest_nr + i,
2213 PDEV_OVERLAY),
2214 !after ? "enabled" : "disabled");
2215 return;
2216 }
2217 }
2218
2219 for (i = 1; i >= 0; i--) {
2220 ovcs_id = ov_id[i];
2221 if (of_overlay_remove(&ovcs_id)) {
2222 unittest(0, "%s failed destroy @\"%s\"\n",
2223 overlay_name_from_nr(overlay_nr + i),
2224 unittest_path(unittest_nr + i,
2225 PDEV_OVERLAY));
2226 return;
2227 }
2228 of_unittest_untrack_overlay(ov_id[i]);
2229 }
2230
2231 for (i = 0; i < 2; i++) {
2232 /* unittest device must be again in before state */
2233 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2234 != before) {
2235 unittest(0, "%s with device @\"%s\" %s\n",
2236 overlay_name_from_nr(overlay_nr + i),
2237 unittest_path(unittest_nr + i,
2238 PDEV_OVERLAY),
2239 !before ? "enabled" : "disabled");
2240 return;
2241 }
2242 }
2243
2244 unittest(1, "overlay test %d passed\n", 6);
2245
2246}
2247
2248/* test overlay application in sequence */
2249static void __init of_unittest_overlay_8(void)
2250{
2251 int i, ov_id[2], ovcs_id;
2252 int overlay_nr = 8, unittest_nr = 8;
2253 const char *overlay_name;
2254 int ret;
2255
2256 /* we don't care about device state in this test */
2257
2258 EXPECT_BEGIN(KERN_INFO,
2259 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2260
2261 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2262
2263 ret = overlay_data_apply(overlay_name, &ovcs_id);
2264 if (!ret)
2265 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2266
2267 EXPECT_END(KERN_INFO,
2268 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2269
2270 if (!ret)
2271 return;
2272
2273 ov_id[0] = ovcs_id;
2274 of_unittest_track_overlay(ov_id[0]);
2275
2276 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2277
2278 EXPECT_BEGIN(KERN_INFO,
2279 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2280
2281 /* apply the overlays */
2282 ret = overlay_data_apply(overlay_name, &ovcs_id);
2283
2284 EXPECT_END(KERN_INFO,
2285 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2286
2287 if (!ret) {
2288 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2289 return;
2290 }
2291
2292 ov_id[1] = ovcs_id;
2293 of_unittest_track_overlay(ov_id[1]);
2294
2295 /* now try to remove first overlay (it should fail) */
2296 ovcs_id = ov_id[0];
2297
2298 EXPECT_BEGIN(KERN_INFO,
2299 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2300
2301 EXPECT_BEGIN(KERN_INFO,
2302 "OF: overlay: overlay #6 is not topmost");
2303
2304 ret = of_overlay_remove(&ovcs_id);
2305
2306 EXPECT_END(KERN_INFO,
2307 "OF: overlay: overlay #6 is not topmost");
2308
2309 EXPECT_END(KERN_INFO,
2310 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2311
2312 if (!ret) {
2313 unittest(0, "%s was destroyed @\"%s\"\n",
2314 overlay_name_from_nr(overlay_nr + 0),
2315 unittest_path(unittest_nr,
2316 PDEV_OVERLAY));
2317 return;
2318 }
2319
2320 /* removing them in order should work */
2321 for (i = 1; i >= 0; i--) {
2322 ovcs_id = ov_id[i];
2323 if (of_overlay_remove(&ovcs_id)) {
2324 unittest(0, "%s not destroyed @\"%s\"\n",
2325 overlay_name_from_nr(overlay_nr + i),
2326 unittest_path(unittest_nr,
2327 PDEV_OVERLAY));
2328 return;
2329 }
2330 of_unittest_untrack_overlay(ov_id[i]);
2331 }
2332
2333 unittest(1, "overlay test %d passed\n", 8);
2334}
2335
2336/* test insertion of a bus with parent devices */
2337static void __init of_unittest_overlay_10(void)
2338{
2339 int ret;
2340 char *child_path;
2341
2342 /* device should disable */
2343 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2344
2345 if (unittest(ret == 0,
2346 "overlay test %d failed; overlay application\n", 10))
2347 return;
2348
2349 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2350 unittest_path(10, PDEV_OVERLAY));
2351 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2352 return;
2353
2354 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2355 kfree(child_path);
2356
2357 unittest(ret, "overlay test %d failed; no child device\n", 10);
2358}
2359
2360/* test insertion of a bus with parent devices (and revert) */
2361static void __init of_unittest_overlay_11(void)
2362{
2363 int ret;
2364
2365 /* device should disable */
2366 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2367 PDEV_OVERLAY);
2368
2369 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2370}
2371
2372#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2373
2374struct unittest_i2c_bus_data {
2375 struct platform_device *pdev;
2376 struct i2c_adapter adap;
2377};
2378
2379static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2380 struct i2c_msg *msgs, int num)
2381{
2382 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2383
2384 (void)std;
2385
2386 return num;
2387}
2388
2389static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2390{
2391 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2392}
2393
2394static const struct i2c_algorithm unittest_i2c_algo = {
2395 .master_xfer = unittest_i2c_master_xfer,
2396 .functionality = unittest_i2c_functionality,
2397};
2398
2399static int unittest_i2c_bus_probe(struct platform_device *pdev)
2400{
2401 struct device *dev = &pdev->dev;
2402 struct device_node *np = dev->of_node;
2403 struct unittest_i2c_bus_data *std;
2404 struct i2c_adapter *adap;
2405 int ret;
2406
2407 if (np == NULL) {
2408 dev_err(dev, "No OF data for device\n");
2409 return -EINVAL;
2410
2411 }
2412
2413 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2414
2415 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2416 if (!std)
2417 return -ENOMEM;
2418
2419 /* link them together */
2420 std->pdev = pdev;
2421 platform_set_drvdata(pdev, std);
2422
2423 adap = &std->adap;
2424 i2c_set_adapdata(adap, std);
2425 adap->nr = -1;
2426 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2427 adap->class = I2C_CLASS_DEPRECATED;
2428 adap->algo = &unittest_i2c_algo;
2429 adap->dev.parent = dev;
2430 adap->dev.of_node = dev->of_node;
2431 adap->timeout = 5 * HZ;
2432 adap->retries = 3;
2433
2434 ret = i2c_add_numbered_adapter(adap);
2435 if (ret != 0) {
2436 dev_err(dev, "Failed to add I2C adapter\n");
2437 return ret;
2438 }
2439
2440 return 0;
2441}
2442
2443static int unittest_i2c_bus_remove(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 = platform_get_drvdata(pdev);
2448
2449 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2450 i2c_del_adapter(&std->adap);
2451
2452 return 0;
2453}
2454
2455static const struct of_device_id unittest_i2c_bus_match[] = {
2456 { .compatible = "unittest-i2c-bus", },
2457 {},
2458};
2459
2460static struct platform_driver unittest_i2c_bus_driver = {
2461 .probe = unittest_i2c_bus_probe,
2462 .remove = unittest_i2c_bus_remove,
2463 .driver = {
2464 .name = "unittest-i2c-bus",
2465 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2466 },
2467};
2468
2469static int unittest_i2c_dev_probe(struct i2c_client *client,
2470 const struct i2c_device_id *id)
2471{
2472 struct device *dev = &client->dev;
2473 struct device_node *np = client->dev.of_node;
2474
2475 if (!np) {
2476 dev_err(dev, "No OF node\n");
2477 return -EINVAL;
2478 }
2479
2480 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2481
2482 return 0;
2483};
2484
2485static int unittest_i2c_dev_remove(struct i2c_client *client)
2486{
2487 struct device *dev = &client->dev;
2488 struct device_node *np = client->dev.of_node;
2489
2490 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2491 return 0;
2492}
2493
2494static const struct i2c_device_id unittest_i2c_dev_id[] = {
2495 { .name = "unittest-i2c-dev" },
2496 { }
2497};
2498
2499static struct i2c_driver unittest_i2c_dev_driver = {
2500 .driver = {
2501 .name = "unittest-i2c-dev",
2502 },
2503 .probe = unittest_i2c_dev_probe,
2504 .remove = unittest_i2c_dev_remove,
2505 .id_table = unittest_i2c_dev_id,
2506};
2507
2508#if IS_BUILTIN(CONFIG_I2C_MUX)
2509
2510static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2511{
2512 return 0;
2513}
2514
2515static int unittest_i2c_mux_probe(struct i2c_client *client,
2516 const struct i2c_device_id *id)
2517{
2518 int i, nchans;
2519 struct device *dev = &client->dev;
2520 struct i2c_adapter *adap = client->adapter;
2521 struct device_node *np = client->dev.of_node, *child;
2522 struct i2c_mux_core *muxc;
2523 u32 reg, max_reg;
2524
2525 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2526
2527 if (!np) {
2528 dev_err(dev, "No OF node\n");
2529 return -EINVAL;
2530 }
2531
2532 max_reg = (u32)-1;
2533 for_each_child_of_node(np, child) {
2534 if (of_property_read_u32(child, "reg", ®))
2535 continue;
2536 if (max_reg == (u32)-1 || reg > max_reg)
2537 max_reg = reg;
2538 }
2539 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2540 if (nchans == 0) {
2541 dev_err(dev, "No channels\n");
2542 return -EINVAL;
2543 }
2544
2545 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2546 unittest_i2c_mux_select_chan, NULL);
2547 if (!muxc)
2548 return -ENOMEM;
2549 for (i = 0; i < nchans; i++) {
2550 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2551 dev_err(dev, "Failed to register mux #%d\n", i);
2552 i2c_mux_del_adapters(muxc);
2553 return -ENODEV;
2554 }
2555 }
2556
2557 i2c_set_clientdata(client, muxc);
2558
2559 return 0;
2560};
2561
2562static int unittest_i2c_mux_remove(struct i2c_client *client)
2563{
2564 struct device *dev = &client->dev;
2565 struct device_node *np = client->dev.of_node;
2566 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2567
2568 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2569 i2c_mux_del_adapters(muxc);
2570 return 0;
2571}
2572
2573static const struct i2c_device_id unittest_i2c_mux_id[] = {
2574 { .name = "unittest-i2c-mux" },
2575 { }
2576};
2577
2578static struct i2c_driver unittest_i2c_mux_driver = {
2579 .driver = {
2580 .name = "unittest-i2c-mux",
2581 },
2582 .probe = unittest_i2c_mux_probe,
2583 .remove = unittest_i2c_mux_remove,
2584 .id_table = unittest_i2c_mux_id,
2585};
2586
2587#endif
2588
2589static int of_unittest_overlay_i2c_init(void)
2590{
2591 int ret;
2592
2593 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2594 if (unittest(ret == 0,
2595 "could not register unittest i2c device driver\n"))
2596 return ret;
2597
2598 ret = platform_driver_register(&unittest_i2c_bus_driver);
2599
2600 if (unittest(ret == 0,
2601 "could not register unittest i2c bus driver\n"))
2602 return ret;
2603
2604#if IS_BUILTIN(CONFIG_I2C_MUX)
2605
2606 EXPECT_BEGIN(KERN_INFO,
2607 "i2c i2c-1: Added multiplexed i2c bus 2");
2608
2609 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2610
2611 EXPECT_END(KERN_INFO,
2612 "i2c i2c-1: Added multiplexed i2c bus 2");
2613
2614 if (unittest(ret == 0,
2615 "could not register unittest i2c mux driver\n"))
2616 return ret;
2617#endif
2618
2619 return 0;
2620}
2621
2622static void of_unittest_overlay_i2c_cleanup(void)
2623{
2624#if IS_BUILTIN(CONFIG_I2C_MUX)
2625 i2c_del_driver(&unittest_i2c_mux_driver);
2626#endif
2627 platform_driver_unregister(&unittest_i2c_bus_driver);
2628 i2c_del_driver(&unittest_i2c_dev_driver);
2629}
2630
2631static void __init of_unittest_overlay_i2c_12(void)
2632{
2633 int ret;
2634
2635 /* device should enable */
2636 EXPECT_BEGIN(KERN_INFO,
2637 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2638
2639 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2640
2641 EXPECT_END(KERN_INFO,
2642 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2643
2644 if (ret)
2645 return;
2646
2647 unittest(1, "overlay test %d passed\n", 12);
2648}
2649
2650/* test deactivation of device */
2651static void __init of_unittest_overlay_i2c_13(void)
2652{
2653 int ret;
2654
2655 EXPECT_BEGIN(KERN_INFO,
2656 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2657
2658 /* device should disable */
2659 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2660
2661 EXPECT_END(KERN_INFO,
2662 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2663
2664 if (ret)
2665 return;
2666
2667 unittest(1, "overlay test %d passed\n", 13);
2668}
2669
2670/* just check for i2c mux existence */
2671static void of_unittest_overlay_i2c_14(void)
2672{
2673}
2674
2675static void __init of_unittest_overlay_i2c_15(void)
2676{
2677 int ret;
2678
2679 /* device should enable */
2680 EXPECT_BEGIN(KERN_INFO,
2681 "i2c i2c-1: Added multiplexed i2c bus 3");
2682
2683 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2684
2685 EXPECT_END(KERN_INFO,
2686 "i2c i2c-1: Added multiplexed i2c bus 3");
2687
2688 if (ret)
2689 return;
2690
2691 unittest(1, "overlay test %d passed\n", 15);
2692}
2693
2694#else
2695
2696static inline void of_unittest_overlay_i2c_14(void) { }
2697static inline void of_unittest_overlay_i2c_15(void) { }
2698
2699#endif
2700
2701static void __init of_unittest_overlay(void)
2702{
2703 struct device_node *bus_np = NULL;
2704
2705 if (platform_driver_register(&unittest_driver)) {
2706 unittest(0, "could not register unittest driver\n");
2707 goto out;
2708 }
2709
2710 bus_np = of_find_node_by_path(bus_path);
2711 if (bus_np == NULL) {
2712 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2713 goto out;
2714 }
2715
2716 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2717 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2718 goto out;
2719 }
2720
2721 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2722 unittest(0, "could not find unittest0 @ \"%s\"\n",
2723 unittest_path(100, PDEV_OVERLAY));
2724 goto out;
2725 }
2726
2727 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2728 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2729 unittest_path(101, PDEV_OVERLAY));
2730 goto out;
2731 }
2732
2733 unittest(1, "basic infrastructure of overlays passed");
2734
2735 /* tests in sequence */
2736 of_unittest_overlay_0();
2737 of_unittest_overlay_1();
2738 of_unittest_overlay_2();
2739 of_unittest_overlay_3();
2740 of_unittest_overlay_4();
2741 of_unittest_overlay_5();
2742 of_unittest_overlay_6();
2743 of_unittest_overlay_8();
2744
2745 of_unittest_overlay_10();
2746 of_unittest_overlay_11();
2747
2748#if IS_BUILTIN(CONFIG_I2C)
2749 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2750 goto out;
2751
2752 of_unittest_overlay_i2c_12();
2753 of_unittest_overlay_i2c_13();
2754 of_unittest_overlay_i2c_14();
2755 of_unittest_overlay_i2c_15();
2756
2757 of_unittest_overlay_i2c_cleanup();
2758#endif
2759
2760 of_unittest_overlay_gpio();
2761
2762 of_unittest_destroy_tracked_overlays();
2763
2764out:
2765 of_node_put(bus_np);
2766}
2767
2768#else
2769static inline void __init of_unittest_overlay(void) { }
2770#endif
2771
2772#ifdef CONFIG_OF_OVERLAY
2773
2774/*
2775 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2776 * in scripts/Makefile.lib
2777 */
2778
2779#define OVERLAY_INFO_EXTERN(name) \
2780 extern uint8_t __dtb_##name##_begin[]; \
2781 extern uint8_t __dtb_##name##_end[]
2782
2783#define OVERLAY_INFO(overlay_name, expected) \
2784{ .dtb_begin = __dtb_##overlay_name##_begin, \
2785 .dtb_end = __dtb_##overlay_name##_end, \
2786 .expected_result = expected, \
2787 .name = #overlay_name, \
2788}
2789
2790struct overlay_info {
2791 uint8_t *dtb_begin;
2792 uint8_t *dtb_end;
2793 int expected_result;
2794 int overlay_id;
2795 char *name;
2796};
2797
2798OVERLAY_INFO_EXTERN(overlay_base);
2799OVERLAY_INFO_EXTERN(overlay);
2800OVERLAY_INFO_EXTERN(overlay_0);
2801OVERLAY_INFO_EXTERN(overlay_1);
2802OVERLAY_INFO_EXTERN(overlay_2);
2803OVERLAY_INFO_EXTERN(overlay_3);
2804OVERLAY_INFO_EXTERN(overlay_4);
2805OVERLAY_INFO_EXTERN(overlay_5);
2806OVERLAY_INFO_EXTERN(overlay_6);
2807OVERLAY_INFO_EXTERN(overlay_7);
2808OVERLAY_INFO_EXTERN(overlay_8);
2809OVERLAY_INFO_EXTERN(overlay_9);
2810OVERLAY_INFO_EXTERN(overlay_10);
2811OVERLAY_INFO_EXTERN(overlay_11);
2812OVERLAY_INFO_EXTERN(overlay_12);
2813OVERLAY_INFO_EXTERN(overlay_13);
2814OVERLAY_INFO_EXTERN(overlay_15);
2815OVERLAY_INFO_EXTERN(overlay_gpio_01);
2816OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2817OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2818OVERLAY_INFO_EXTERN(overlay_gpio_03);
2819OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2820OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2821OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2822OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2823OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2824OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2825
2826/* entries found by name */
2827static struct overlay_info overlays[] = {
2828 OVERLAY_INFO(overlay_base, -9999),
2829 OVERLAY_INFO(overlay, 0),
2830 OVERLAY_INFO(overlay_0, 0),
2831 OVERLAY_INFO(overlay_1, 0),
2832 OVERLAY_INFO(overlay_2, 0),
2833 OVERLAY_INFO(overlay_3, 0),
2834 OVERLAY_INFO(overlay_4, 0),
2835 OVERLAY_INFO(overlay_5, 0),
2836 OVERLAY_INFO(overlay_6, 0),
2837 OVERLAY_INFO(overlay_7, 0),
2838 OVERLAY_INFO(overlay_8, 0),
2839 OVERLAY_INFO(overlay_9, 0),
2840 OVERLAY_INFO(overlay_10, 0),
2841 OVERLAY_INFO(overlay_11, 0),
2842 OVERLAY_INFO(overlay_12, 0),
2843 OVERLAY_INFO(overlay_13, 0),
2844 OVERLAY_INFO(overlay_15, 0),
2845 OVERLAY_INFO(overlay_gpio_01, 0),
2846 OVERLAY_INFO(overlay_gpio_02a, 0),
2847 OVERLAY_INFO(overlay_gpio_02b, 0),
2848 OVERLAY_INFO(overlay_gpio_03, 0),
2849 OVERLAY_INFO(overlay_gpio_04a, 0),
2850 OVERLAY_INFO(overlay_gpio_04b, 0),
2851 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2852 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2853 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2854 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2855 /* end marker */
2856 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2857};
2858
2859static struct device_node *overlay_base_root;
2860
2861static void * __init dt_alloc_memory(u64 size, u64 align)
2862{
2863 void *ptr = memblock_alloc(size, align);
2864
2865 if (!ptr)
2866 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2867 __func__, size, align);
2868
2869 return ptr;
2870}
2871
2872/*
2873 * Create base device tree for the overlay unittest.
2874 *
2875 * This is called from very early boot code.
2876 *
2877 * Do as much as possible the same way as done in __unflatten_device_tree
2878 * and other early boot steps for the normal FDT so that the overlay base
2879 * unflattened tree will have the same characteristics as the real tree
2880 * (such as having memory allocated by the early allocator). The goal
2881 * is to test "the real thing" as much as possible, and test "test setup
2882 * code" as little as possible.
2883 *
2884 * Have to stop before resolving phandles, because that uses kmalloc.
2885 */
2886void __init unittest_unflatten_overlay_base(void)
2887{
2888 struct overlay_info *info;
2889 u32 data_size;
2890 void *new_fdt;
2891 u32 size;
2892 int found = 0;
2893 const char *overlay_name = "overlay_base";
2894
2895 for (info = overlays; info && info->name; info++) {
2896 if (!strcmp(overlay_name, info->name)) {
2897 found = 1;
2898 break;
2899 }
2900 }
2901 if (!found) {
2902 pr_err("no overlay data for %s\n", overlay_name);
2903 return;
2904 }
2905
2906 info = &overlays[0];
2907
2908 if (info->expected_result != -9999) {
2909 pr_err("No dtb 'overlay_base' to attach\n");
2910 return;
2911 }
2912
2913 data_size = info->dtb_end - info->dtb_begin;
2914 if (!data_size) {
2915 pr_err("No dtb 'overlay_base' to attach\n");
2916 return;
2917 }
2918
2919 size = fdt_totalsize(info->dtb_begin);
2920 if (size != data_size) {
2921 pr_err("dtb 'overlay_base' header totalsize != actual size");
2922 return;
2923 }
2924
2925 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2926 if (!new_fdt) {
2927 pr_err("alloc for dtb 'overlay_base' failed");
2928 return;
2929 }
2930
2931 memcpy(new_fdt, info->dtb_begin, size);
2932
2933 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2934 dt_alloc_memory, true);
2935}
2936
2937/*
2938 * The purpose of of_unittest_overlay_data_add is to add an
2939 * overlay in the normal fashion. This is a test of the whole
2940 * picture, instead of testing individual elements.
2941 *
2942 * A secondary purpose is to be able to verify that the contents of
2943 * /proc/device-tree/ contains the updated structure and values from
2944 * the overlay. That must be verified separately in user space.
2945 *
2946 * Return 0 on unexpected error.
2947 */
2948static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2949{
2950 struct overlay_info *info;
2951 int found = 0;
2952 int ret;
2953 u32 size;
2954
2955 for (info = overlays; info && info->name; info++) {
2956 if (!strcmp(overlay_name, info->name)) {
2957 found = 1;
2958 break;
2959 }
2960 }
2961 if (!found) {
2962 pr_err("no overlay data for %s\n", overlay_name);
2963 return 0;
2964 }
2965
2966 size = info->dtb_end - info->dtb_begin;
2967 if (!size)
2968 pr_err("no overlay data for %s\n", overlay_name);
2969
2970 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
2971 if (overlay_id)
2972 *overlay_id = info->overlay_id;
2973 if (ret < 0)
2974 goto out;
2975
2976 pr_debug("%s applied\n", overlay_name);
2977
2978out:
2979 if (ret != info->expected_result)
2980 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
2981 info->expected_result, ret, overlay_name);
2982
2983 return (ret == info->expected_result);
2984}
2985
2986/*
2987 * The purpose of of_unittest_overlay_high_level is to add an overlay
2988 * in the normal fashion. This is a test of the whole picture,
2989 * instead of individual elements.
2990 *
2991 * The first part of the function is _not_ normal overlay usage; it is
2992 * finishing splicing the base overlay device tree into the live tree.
2993 */
2994static __init void of_unittest_overlay_high_level(void)
2995{
2996 struct device_node *last_sibling;
2997 struct device_node *np;
2998 struct device_node *of_symbols;
2999 struct device_node *overlay_base_symbols;
3000 struct device_node **pprev;
3001 struct property *prop;
3002 int ret;
3003
3004 if (!overlay_base_root) {
3005 unittest(0, "overlay_base_root not initialized\n");
3006 return;
3007 }
3008
3009 /*
3010 * Could not fixup phandles in unittest_unflatten_overlay_base()
3011 * because kmalloc() was not yet available.
3012 */
3013 of_overlay_mutex_lock();
3014 of_resolve_phandles(overlay_base_root);
3015 of_overlay_mutex_unlock();
3016
3017
3018 /*
3019 * do not allow overlay_base to duplicate any node already in
3020 * tree, this greatly simplifies the code
3021 */
3022
3023 /*
3024 * remove overlay_base_root node "__local_fixups", after
3025 * being used by of_resolve_phandles()
3026 */
3027 pprev = &overlay_base_root->child;
3028 for (np = overlay_base_root->child; np; np = np->sibling) {
3029 if (of_node_name_eq(np, "__local_fixups__")) {
3030 *pprev = np->sibling;
3031 break;
3032 }
3033 pprev = &np->sibling;
3034 }
3035
3036 /* remove overlay_base_root node "__symbols__" if in live tree */
3037 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3038 if (of_symbols) {
3039 /* will have to graft properties from node into live tree */
3040 pprev = &overlay_base_root->child;
3041 for (np = overlay_base_root->child; np; np = np->sibling) {
3042 if (of_node_name_eq(np, "__symbols__")) {
3043 overlay_base_symbols = np;
3044 *pprev = np->sibling;
3045 break;
3046 }
3047 pprev = &np->sibling;
3048 }
3049 }
3050
3051 for_each_child_of_node(overlay_base_root, np) {
3052 struct device_node *base_child;
3053 for_each_child_of_node(of_root, base_child) {
3054 if (!strcmp(np->full_name, base_child->full_name)) {
3055 unittest(0, "illegal node name in overlay_base %pOFn",
3056 np);
3057 return;
3058 }
3059 }
3060 }
3061
3062 /*
3063 * overlay 'overlay_base' is not allowed to have root
3064 * properties, so only need to splice nodes into main device tree.
3065 *
3066 * root node of *overlay_base_root will not be freed, it is lost
3067 * memory.
3068 */
3069
3070 for (np = overlay_base_root->child; np; np = np->sibling)
3071 np->parent = of_root;
3072
3073 mutex_lock(&of_mutex);
3074
3075 for (last_sibling = np = of_root->child; np; np = np->sibling)
3076 last_sibling = np;
3077
3078 if (last_sibling)
3079 last_sibling->sibling = overlay_base_root->child;
3080 else
3081 of_root->child = overlay_base_root->child;
3082
3083 for_each_of_allnodes_from(overlay_base_root, np)
3084 __of_attach_node_sysfs(np);
3085
3086 if (of_symbols) {
3087 struct property *new_prop;
3088 for_each_property_of_node(overlay_base_symbols, prop) {
3089
3090 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3091 if (!new_prop) {
3092 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3093 prop->name);
3094 goto err_unlock;
3095 }
3096 if (__of_add_property(of_symbols, new_prop)) {
3097 kfree(new_prop->name);
3098 kfree(new_prop->value);
3099 kfree(new_prop);
3100 /* "name" auto-generated by unflatten */
3101 if (!strcmp(prop->name, "name"))
3102 continue;
3103 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3104 prop->name);
3105 goto err_unlock;
3106 }
3107 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3108 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3109 prop->name);
3110 goto err_unlock;
3111 }
3112 }
3113 }
3114
3115 mutex_unlock(&of_mutex);
3116
3117
3118 /* now do the normal overlay usage test */
3119
3120 EXPECT_BEGIN(KERN_ERR,
3121 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3122 EXPECT_BEGIN(KERN_ERR,
3123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3124 EXPECT_BEGIN(KERN_ERR,
3125 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3126 EXPECT_BEGIN(KERN_ERR,
3127 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3128 EXPECT_BEGIN(KERN_ERR,
3129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3130 EXPECT_BEGIN(KERN_ERR,
3131 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3132 EXPECT_BEGIN(KERN_ERR,
3133 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3134 EXPECT_BEGIN(KERN_ERR,
3135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3136 EXPECT_BEGIN(KERN_ERR,
3137 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3138 EXPECT_BEGIN(KERN_ERR,
3139 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3140 EXPECT_BEGIN(KERN_ERR,
3141 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3142
3143 ret = overlay_data_apply("overlay", NULL);
3144
3145 EXPECT_END(KERN_ERR,
3146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3147 EXPECT_END(KERN_ERR,
3148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3149 EXPECT_END(KERN_ERR,
3150 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3151 EXPECT_END(KERN_ERR,
3152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3153 EXPECT_END(KERN_ERR,
3154 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3155 EXPECT_END(KERN_ERR,
3156 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3157 EXPECT_END(KERN_ERR,
3158 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3159 EXPECT_END(KERN_ERR,
3160 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3161 EXPECT_END(KERN_ERR,
3162 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3163 EXPECT_END(KERN_ERR,
3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3165 EXPECT_END(KERN_ERR,
3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3167
3168 unittest(ret, "Adding overlay 'overlay' failed\n");
3169
3170 EXPECT_BEGIN(KERN_ERR,
3171 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3172 EXPECT_BEGIN(KERN_ERR,
3173 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3174
3175 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3176 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3177
3178 EXPECT_END(KERN_ERR,
3179 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3180 EXPECT_END(KERN_ERR,
3181 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3182
3183 EXPECT_BEGIN(KERN_ERR,
3184 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3185 EXPECT_BEGIN(KERN_ERR,
3186 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3187 EXPECT_BEGIN(KERN_ERR,
3188 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3189
3190 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3191 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3192
3193 EXPECT_END(KERN_ERR,
3194 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3195 EXPECT_END(KERN_ERR,
3196 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3197 EXPECT_END(KERN_ERR,
3198 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3199
3200 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3201 "Adding overlay 'overlay_bad_phandle' failed\n");
3202
3203 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3204 "Adding overlay 'overlay_bad_symbol' failed\n");
3205
3206 return;
3207
3208err_unlock:
3209 mutex_unlock(&of_mutex);
3210}
3211
3212#else
3213
3214static inline __init void of_unittest_overlay_high_level(void) {}
3215
3216#endif
3217
3218static int __init of_unittest(void)
3219{
3220 struct device_node *np;
3221 int res;
3222
3223 pr_info("start of unittest - you will see error messages\n");
3224
3225 /* adding data for unittest */
3226
3227 if (IS_ENABLED(CONFIG_UML))
3228 unittest_unflatten_overlay_base();
3229
3230 res = unittest_data_add();
3231 if (res)
3232 return res;
3233 if (!of_aliases)
3234 of_aliases = of_find_node_by_path("/aliases");
3235
3236 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3237 if (!np) {
3238 pr_info("No testcase data in device tree; not running tests\n");
3239 return 0;
3240 }
3241 of_node_put(np);
3242
3243 of_unittest_check_tree_linkage();
3244 of_unittest_check_phandles();
3245 of_unittest_find_node_by_name();
3246 of_unittest_dynamic();
3247 of_unittest_parse_phandle_with_args();
3248 of_unittest_parse_phandle_with_args_map();
3249 of_unittest_printf();
3250 of_unittest_property_string();
3251 of_unittest_property_copy();
3252 of_unittest_changeset();
3253 of_unittest_parse_interrupts();
3254 of_unittest_parse_interrupts_extended();
3255 of_unittest_parse_dma_ranges();
3256 of_unittest_pci_dma_ranges();
3257 of_unittest_match_node();
3258 of_unittest_platform_populate();
3259 of_unittest_overlay();
3260
3261 /* Double check linkage after removing testcase data */
3262 of_unittest_check_tree_linkage();
3263
3264 of_unittest_overlay_high_level();
3265
3266 pr_info("end of unittest - %i passed, %i failed\n",
3267 unittest_results.passed, unittest_results.failed);
3268
3269 return 0;
3270}
3271late_initcall(of_unittest);
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Self tests for device tree subsystem
4 */
5
6#define pr_fmt(fmt) "### dt-test ### " fmt
7
8#include <linux/memblock.h>
9#include <linux/clk.h>
10#include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */
11#include <linux/err.h>
12#include <linux/errno.h>
13#include <linux/hashtable.h>
14#include <linux/libfdt.h>
15#include <linux/of.h>
16#include <linux/of_address.h>
17#include <linux/of_fdt.h>
18#include <linux/of_irq.h>
19#include <linux/of_platform.h>
20#include <linux/list.h>
21#include <linux/mutex.h>
22#include <linux/slab.h>
23#include <linux/device.h>
24#include <linux/platform_device.h>
25#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 * Expected message may have a message level other than KERN_INFO.
54 * Print the expected message only if the current loglevel will allow
55 * the actual message to print.
56 *
57 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by
58 * pr_debug().
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 /* Test if trailing '/' works */
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 /* Test if trailing '/' works on aliases */
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 /* Array of 4 properties for the purpose of testing */
177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
178 if (!prop) {
179 unittest(0, "kzalloc() failed\n");
180 return;
181 }
182
183 /* Add a new property - should pass*/
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 /* Try to add an existing property - should fail */
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 /* Try to modify an existing property - should pass */
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 /* Try to modify non-existent property - should pass*/
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 /* Remove property - should pass */
212 unittest(of_remove_property(np, prop) == 0,
213 "Removing a property should have passed\n");
214
215 /* Adding very large property - should pass */
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 /* Baseline; check conversion with a large size limit */
283 memset(buf, 0xff, buf_size);
284 size = snprintf(buf, buf_size - 2, fmt, np);
285
286 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
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 /* Make sure length limits work */
292 size++;
293 for (i = 0; i < 2; i++, size--) {
294 /* Clear the buffer, and make sure it works correctly still */
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 /* Clean up */
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 /* Test the values from tests-phandle.dtsi */
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 /* Check for missing list property */
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 /* Check for missing cells property */
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 /* Check for bad phandle in list */
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 /* Check for incorrectly formed argument list */
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 /* Test the values from tests-phandle.dtsi */
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 /* Check for missing list property */
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 /* Check for missing cells,map,mask property */
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 /* Check for bad phandle in list */
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 /* Check for incorrectly formed argument list */
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 /* of_property_count_strings() tests */
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 /* of_property_read_string_index() tests */
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); /* should fail */
742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
743 strings[1] = NULL;
744
745 /* of_property_read_string_array() tests */
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 /* -- An incorrectly formed string should cause a failure */
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 /* -- parsing the correctly formed strings should still work: */
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 /* Make sure node names are constructed correctly */
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 * Get the dma-ranges from the device tree
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 /* Test the values from tests-phandle.dtsi */
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 /* Test the values from tests-phandle.dtsi */
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", }, /* Name alone is lowest priority */
1148 { .data = "B", .type = "type1", }, /* followed by type alone */
1149
1150 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1151 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
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 = DEFINE_RES_MEM(0xfffffff8, 2);
1213static const struct platform_device_info test_bus_info = {
1214 .name = "unittest-bus",
1215};
1216static void __init of_unittest_platform_populate(void)
1217{
1218 int irq, rc;
1219 struct device_node *np, *child, *grandchild;
1220 struct platform_device *pdev, *test_bus;
1221 const struct of_device_id match[] = {
1222 { .compatible = "test-device", },
1223 {}
1224 };
1225
1226 np = of_find_node_by_path("/testcase-data");
1227 of_platform_default_populate(np, NULL, NULL);
1228
1229 /* Test that a missing irq domain returns -EPROBE_DEFER */
1230 np = of_find_node_by_path("/testcase-data/testcase-device1");
1231 pdev = of_find_device_by_node(np);
1232 unittest(pdev, "device 1 creation failed\n");
1233
1234 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1235 irq = platform_get_irq(pdev, 0);
1236 unittest(irq == -EPROBE_DEFER,
1237 "device deferred probe failed - %d\n", irq);
1238
1239 /* Test that a parsing failure does not return -EPROBE_DEFER */
1240 np = of_find_node_by_path("/testcase-data/testcase-device2");
1241 pdev = of_find_device_by_node(np);
1242 unittest(pdev, "device 2 creation failed\n");
1243
1244 EXPECT_BEGIN(KERN_INFO,
1245 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1246
1247 irq = platform_get_irq(pdev, 0);
1248
1249 EXPECT_END(KERN_INFO,
1250 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1251
1252 unittest(irq < 0 && irq != -EPROBE_DEFER,
1253 "device parsing error failed - %d\n", irq);
1254 }
1255
1256 np = of_find_node_by_path("/testcase-data/platform-tests");
1257 unittest(np, "No testcase data in device tree\n");
1258 if (!np)
1259 return;
1260
1261 test_bus = platform_device_register_full(&test_bus_info);
1262 rc = PTR_ERR_OR_ZERO(test_bus);
1263 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1264 if (rc) {
1265 of_node_put(np);
1266 return;
1267 }
1268 test_bus->dev.of_node = np;
1269
1270 /*
1271 * Add a dummy resource to the test bus node after it is
1272 * registered to catch problems with un-inserted resources. The
1273 * DT code doesn't insert the resources, and it has caused the
1274 * kernel to oops in the past. This makes sure the same bug
1275 * doesn't crop up again.
1276 */
1277 platform_device_add_resources(test_bus, &test_bus_res, 1);
1278
1279 of_platform_populate(np, match, NULL, &test_bus->dev);
1280 for_each_child_of_node(np, child) {
1281 for_each_child_of_node(child, grandchild) {
1282 pdev = of_find_device_by_node(grandchild);
1283 unittest(pdev,
1284 "Could not create device for node '%pOFn'\n",
1285 grandchild);
1286 platform_device_put(pdev);
1287 }
1288 }
1289
1290 of_platform_depopulate(&test_bus->dev);
1291 for_each_child_of_node(np, child) {
1292 for_each_child_of_node(child, grandchild)
1293 unittest(!of_find_device_by_node(grandchild),
1294 "device didn't get destroyed '%pOFn'\n",
1295 grandchild);
1296 }
1297
1298 platform_device_unregister(test_bus);
1299 of_node_put(np);
1300}
1301
1302/**
1303 * update_node_properties - adds the properties
1304 * of np into dup node (present in live tree) and
1305 * updates parent of children of np to dup.
1306 *
1307 * @np: node whose properties are being added to the live tree
1308 * @dup: node present in live tree to be updated
1309 */
1310static void update_node_properties(struct device_node *np,
1311 struct device_node *dup)
1312{
1313 struct property *prop;
1314 struct property *save_next;
1315 struct device_node *child;
1316 int ret;
1317
1318 for_each_child_of_node(np, child)
1319 child->parent = dup;
1320
1321 /*
1322 * "unittest internal error: unable to add testdata property"
1323 *
1324 * If this message reports a property in node '/__symbols__' then
1325 * the respective unittest overlay contains a label that has the
1326 * same name as a label in the live devicetree. The label will
1327 * be in the live devicetree only if the devicetree source was
1328 * compiled with the '-@' option. If you encounter this error,
1329 * please consider renaming __all__ of the labels in the unittest
1330 * overlay dts files with an odd prefix that is unlikely to be
1331 * used in a real devicetree.
1332 */
1333
1334 /*
1335 * open code for_each_property_of_node() because of_add_property()
1336 * sets prop->next to NULL
1337 */
1338 for (prop = np->properties; prop != NULL; prop = save_next) {
1339 save_next = prop->next;
1340 ret = of_add_property(dup, prop);
1341 if (ret) {
1342 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1343 continue;
1344 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1345 np, prop->name);
1346 }
1347 }
1348}
1349
1350/**
1351 * attach_node_and_children - attaches nodes
1352 * and its children to live tree.
1353 * CAUTION: misleading function name - if node @np already exists in
1354 * the live tree then children of @np are *not* attached to the live
1355 * tree. This works for the current test devicetree nodes because such
1356 * nodes do not have child nodes.
1357 *
1358 * @np: Node to attach to live tree
1359 */
1360static void attach_node_and_children(struct device_node *np)
1361{
1362 struct device_node *next, *dup, *child;
1363 unsigned long flags;
1364 const char *full_name;
1365
1366 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1367
1368 if (!strcmp(full_name, "/__local_fixups__") ||
1369 !strcmp(full_name, "/__fixups__")) {
1370 kfree(full_name);
1371 return;
1372 }
1373
1374 dup = of_find_node_by_path(full_name);
1375 kfree(full_name);
1376 if (dup) {
1377 update_node_properties(np, dup);
1378 return;
1379 }
1380
1381 child = np->child;
1382 np->child = NULL;
1383
1384 mutex_lock(&of_mutex);
1385 raw_spin_lock_irqsave(&devtree_lock, flags);
1386 np->sibling = np->parent->child;
1387 np->parent->child = np;
1388 of_node_clear_flag(np, OF_DETACHED);
1389 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1390
1391 __of_attach_node_sysfs(np);
1392 mutex_unlock(&of_mutex);
1393
1394 while (child) {
1395 next = child->sibling;
1396 attach_node_and_children(child);
1397 child = next;
1398 }
1399}
1400
1401/**
1402 * unittest_data_add - Reads, copies data from
1403 * linked tree and attaches it to the live tree
1404 */
1405static int __init unittest_data_add(void)
1406{
1407 void *unittest_data;
1408 void *unittest_data_align;
1409 struct device_node *unittest_data_node = NULL, *np;
1410 /*
1411 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1412 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1413 */
1414 extern uint8_t __dtb_testcases_begin[];
1415 extern uint8_t __dtb_testcases_end[];
1416 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1417 int rc;
1418 void *ret;
1419
1420 if (!size) {
1421 pr_warn("%s: testcases is empty\n", __func__);
1422 return -ENODATA;
1423 }
1424
1425 /* creating copy */
1426 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1427 if (!unittest_data)
1428 return -ENOMEM;
1429
1430 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1431 memcpy(unittest_data_align, __dtb_testcases_begin, size);
1432
1433 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1434 if (!ret) {
1435 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1436 kfree(unittest_data);
1437 return -ENODATA;
1438 }
1439 if (!unittest_data_node) {
1440 pr_warn("%s: testcases tree is empty\n", __func__);
1441 kfree(unittest_data);
1442 return -ENODATA;
1443 }
1444
1445 /*
1446 * This lock normally encloses of_resolve_phandles()
1447 */
1448 of_overlay_mutex_lock();
1449
1450 rc = of_resolve_phandles(unittest_data_node);
1451 if (rc) {
1452 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1453 of_overlay_mutex_unlock();
1454 return -EINVAL;
1455 }
1456
1457 if (!of_root) {
1458 of_root = unittest_data_node;
1459 for_each_of_allnodes(np)
1460 __of_attach_node_sysfs(np);
1461 of_aliases = of_find_node_by_path("/aliases");
1462 of_chosen = of_find_node_by_path("/chosen");
1463 of_overlay_mutex_unlock();
1464 return 0;
1465 }
1466
1467 EXPECT_BEGIN(KERN_INFO,
1468 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1469
1470 /* attach the sub-tree to live tree */
1471 np = unittest_data_node->child;
1472 while (np) {
1473 struct device_node *next = np->sibling;
1474
1475 np->parent = of_root;
1476 attach_node_and_children(np);
1477 np = next;
1478 }
1479
1480 EXPECT_END(KERN_INFO,
1481 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1482
1483 of_overlay_mutex_unlock();
1484
1485 return 0;
1486}
1487
1488#ifdef CONFIG_OF_OVERLAY
1489static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1490
1491static int unittest_probe(struct platform_device *pdev)
1492{
1493 struct device *dev = &pdev->dev;
1494 struct device_node *np = dev->of_node;
1495
1496 if (np == NULL) {
1497 dev_err(dev, "No OF data for device\n");
1498 return -EINVAL;
1499
1500 }
1501
1502 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1503
1504 of_platform_populate(np, NULL, NULL, &pdev->dev);
1505
1506 return 0;
1507}
1508
1509static int unittest_remove(struct platform_device *pdev)
1510{
1511 struct device *dev = &pdev->dev;
1512 struct device_node *np = dev->of_node;
1513
1514 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1515 return 0;
1516}
1517
1518static const struct of_device_id unittest_match[] = {
1519 { .compatible = "unittest", },
1520 {},
1521};
1522
1523static struct platform_driver unittest_driver = {
1524 .probe = unittest_probe,
1525 .remove = unittest_remove,
1526 .driver = {
1527 .name = "unittest",
1528 .of_match_table = of_match_ptr(unittest_match),
1529 },
1530};
1531
1532/* get the platform device instantiated at the path */
1533static struct platform_device *of_path_to_platform_device(const char *path)
1534{
1535 struct device_node *np;
1536 struct platform_device *pdev;
1537
1538 np = of_find_node_by_path(path);
1539 if (np == NULL)
1540 return NULL;
1541
1542 pdev = of_find_device_by_node(np);
1543 of_node_put(np);
1544
1545 return pdev;
1546}
1547
1548/* find out if a platform device exists at that path */
1549static int of_path_platform_device_exists(const char *path)
1550{
1551 struct platform_device *pdev;
1552
1553 pdev = of_path_to_platform_device(path);
1554 platform_device_put(pdev);
1555 return pdev != NULL;
1556}
1557
1558#ifdef CONFIG_OF_GPIO
1559
1560struct unittest_gpio_dev {
1561 struct gpio_chip chip;
1562};
1563
1564static int unittest_gpio_chip_request_count;
1565static int unittest_gpio_probe_count;
1566static int unittest_gpio_probe_pass_count;
1567
1568static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1569{
1570 unittest_gpio_chip_request_count++;
1571
1572 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1573 unittest_gpio_chip_request_count);
1574 return 0;
1575}
1576
1577static int unittest_gpio_probe(struct platform_device *pdev)
1578{
1579 struct unittest_gpio_dev *devptr;
1580 int ret;
1581
1582 unittest_gpio_probe_count++;
1583
1584 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1585 if (!devptr)
1586 return -ENOMEM;
1587
1588 platform_set_drvdata(pdev, devptr);
1589
1590 devptr->chip.of_node = pdev->dev.of_node;
1591 devptr->chip.label = "of-unittest-gpio";
1592 devptr->chip.base = -1; /* dynamic allocation */
1593 devptr->chip.ngpio = 5;
1594 devptr->chip.request = unittest_gpio_chip_request;
1595
1596 ret = gpiochip_add_data(&devptr->chip, NULL);
1597
1598 unittest(!ret,
1599 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1600
1601 if (!ret)
1602 unittest_gpio_probe_pass_count++;
1603 return ret;
1604}
1605
1606static int unittest_gpio_remove(struct platform_device *pdev)
1607{
1608 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1609 struct device *dev = &pdev->dev;
1610 struct device_node *np = pdev->dev.of_node;
1611
1612 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1613
1614 if (!gdev)
1615 return -EINVAL;
1616
1617 if (gdev->chip.base != -1)
1618 gpiochip_remove(&gdev->chip);
1619
1620 platform_set_drvdata(pdev, NULL);
1621 kfree(gdev);
1622
1623 return 0;
1624}
1625
1626static const struct of_device_id unittest_gpio_id[] = {
1627 { .compatible = "unittest-gpio", },
1628 {}
1629};
1630
1631static struct platform_driver unittest_gpio_driver = {
1632 .probe = unittest_gpio_probe,
1633 .remove = unittest_gpio_remove,
1634 .driver = {
1635 .name = "unittest-gpio",
1636 .of_match_table = of_match_ptr(unittest_gpio_id),
1637 },
1638};
1639
1640static void __init of_unittest_overlay_gpio(void)
1641{
1642 int chip_request_count;
1643 int probe_pass_count;
1644 int ret;
1645
1646 /*
1647 * tests: apply overlays before registering driver
1648 * Similar to installing a driver as a module, the
1649 * driver is registered after applying the overlays.
1650 *
1651 * The overlays are applied by overlay_data_apply()
1652 * instead of of_unittest_apply_overlay() so that they
1653 * will not be tracked. Thus they will not be removed
1654 * by of_unittest_destroy_tracked_overlays().
1655 *
1656 * - apply overlay_gpio_01
1657 * - apply overlay_gpio_02a
1658 * - apply overlay_gpio_02b
1659 * - register driver
1660 *
1661 * register driver will result in
1662 * - probe and processing gpio hog for overlay_gpio_01
1663 * - probe for overlay_gpio_02a
1664 * - processing gpio for overlay_gpio_02b
1665 */
1666
1667 probe_pass_count = unittest_gpio_probe_pass_count;
1668 chip_request_count = unittest_gpio_chip_request_count;
1669
1670 /*
1671 * overlay_gpio_01 contains gpio node and child gpio hog node
1672 * overlay_gpio_02a contains gpio node
1673 * overlay_gpio_02b contains child gpio hog node
1674 */
1675
1676 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1677 "Adding overlay 'overlay_gpio_01' failed\n");
1678
1679 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1680 "Adding overlay 'overlay_gpio_02a' failed\n");
1681
1682 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1683 "Adding overlay 'overlay_gpio_02b' failed\n");
1684
1685 /*
1686 * messages are the result of the probes, after the
1687 * driver is registered
1688 */
1689
1690 EXPECT_BEGIN(KERN_INFO,
1691 "GPIO line <<int>> (line-B-input) hogged as input\n");
1692
1693 EXPECT_BEGIN(KERN_INFO,
1694 "GPIO line <<int>> (line-A-input) hogged as input\n");
1695
1696 ret = platform_driver_register(&unittest_gpio_driver);
1697 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1698 return;
1699
1700 EXPECT_END(KERN_INFO,
1701 "GPIO line <<int>> (line-A-input) hogged as input\n");
1702 EXPECT_END(KERN_INFO,
1703 "GPIO line <<int>> (line-B-input) hogged as input\n");
1704
1705 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1706 "unittest_gpio_probe() failed or not called\n");
1707
1708 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1709 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1710 unittest_gpio_chip_request_count - chip_request_count);
1711
1712 /*
1713 * tests: apply overlays after registering driver
1714 *
1715 * Similar to a driver built-in to the kernel, the
1716 * driver is registered before applying the overlays.
1717 *
1718 * overlay_gpio_03 contains gpio node and child gpio hog node
1719 *
1720 * - apply overlay_gpio_03
1721 *
1722 * apply overlay will result in
1723 * - probe and processing gpio hog.
1724 */
1725
1726 probe_pass_count = unittest_gpio_probe_pass_count;
1727 chip_request_count = unittest_gpio_chip_request_count;
1728
1729 EXPECT_BEGIN(KERN_INFO,
1730 "GPIO line <<int>> (line-D-input) hogged as input\n");
1731
1732 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1733
1734 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1735 "Adding overlay 'overlay_gpio_03' failed\n");
1736
1737 EXPECT_END(KERN_INFO,
1738 "GPIO line <<int>> (line-D-input) hogged as input\n");
1739
1740 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1741 "unittest_gpio_probe() failed or not called\n");
1742
1743 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1744 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1745 unittest_gpio_chip_request_count - chip_request_count);
1746
1747 /*
1748 * overlay_gpio_04a contains gpio node
1749 *
1750 * - apply overlay_gpio_04a
1751 *
1752 * apply the overlay will result in
1753 * - probe for overlay_gpio_04a
1754 */
1755
1756 probe_pass_count = unittest_gpio_probe_pass_count;
1757 chip_request_count = unittest_gpio_chip_request_count;
1758
1759 /* overlay_gpio_04a contains gpio node */
1760
1761 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1762 "Adding overlay 'overlay_gpio_04a' failed\n");
1763
1764 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1765 "unittest_gpio_probe() failed or not called\n");
1766
1767 /*
1768 * overlay_gpio_04b contains child gpio hog node
1769 *
1770 * - apply overlay_gpio_04b
1771 *
1772 * apply the overlay will result in
1773 * - processing gpio for overlay_gpio_04b
1774 */
1775
1776 EXPECT_BEGIN(KERN_INFO,
1777 "GPIO line <<int>> (line-C-input) hogged as input\n");
1778
1779 /* overlay_gpio_04b contains child gpio hog node */
1780
1781 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1782 "Adding overlay 'overlay_gpio_04b' failed\n");
1783
1784 EXPECT_END(KERN_INFO,
1785 "GPIO line <<int>> (line-C-input) hogged as input\n");
1786
1787 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1788 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1789 unittest_gpio_chip_request_count - chip_request_count);
1790}
1791
1792#else
1793
1794static void __init of_unittest_overlay_gpio(void)
1795{
1796 /* skip tests */
1797}
1798
1799#endif
1800
1801#if IS_BUILTIN(CONFIG_I2C)
1802
1803/* get the i2c client device instantiated at the path */
1804static struct i2c_client *of_path_to_i2c_client(const char *path)
1805{
1806 struct device_node *np;
1807 struct i2c_client *client;
1808
1809 np = of_find_node_by_path(path);
1810 if (np == NULL)
1811 return NULL;
1812
1813 client = of_find_i2c_device_by_node(np);
1814 of_node_put(np);
1815
1816 return client;
1817}
1818
1819/* find out if a i2c client device exists at that path */
1820static int of_path_i2c_client_exists(const char *path)
1821{
1822 struct i2c_client *client;
1823
1824 client = of_path_to_i2c_client(path);
1825 if (client)
1826 put_device(&client->dev);
1827 return client != NULL;
1828}
1829#else
1830static int of_path_i2c_client_exists(const char *path)
1831{
1832 return 0;
1833}
1834#endif
1835
1836enum overlay_type {
1837 PDEV_OVERLAY,
1838 I2C_OVERLAY
1839};
1840
1841static int of_path_device_type_exists(const char *path,
1842 enum overlay_type ovtype)
1843{
1844 switch (ovtype) {
1845 case PDEV_OVERLAY:
1846 return of_path_platform_device_exists(path);
1847 case I2C_OVERLAY:
1848 return of_path_i2c_client_exists(path);
1849 }
1850 return 0;
1851}
1852
1853static const char *unittest_path(int nr, enum overlay_type ovtype)
1854{
1855 const char *base;
1856 static char buf[256];
1857
1858 switch (ovtype) {
1859 case PDEV_OVERLAY:
1860 base = "/testcase-data/overlay-node/test-bus";
1861 break;
1862 case I2C_OVERLAY:
1863 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1864 break;
1865 default:
1866 buf[0] = '\0';
1867 return buf;
1868 }
1869 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1870 buf[sizeof(buf) - 1] = '\0';
1871 return buf;
1872}
1873
1874static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1875{
1876 const char *path;
1877
1878 path = unittest_path(unittest_nr, ovtype);
1879
1880 switch (ovtype) {
1881 case PDEV_OVERLAY:
1882 return of_path_platform_device_exists(path);
1883 case I2C_OVERLAY:
1884 return of_path_i2c_client_exists(path);
1885 }
1886 return 0;
1887}
1888
1889static const char *overlay_name_from_nr(int nr)
1890{
1891 static char buf[256];
1892
1893 snprintf(buf, sizeof(buf) - 1,
1894 "overlay_%d", nr);
1895 buf[sizeof(buf) - 1] = '\0';
1896
1897 return buf;
1898}
1899
1900static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1901
1902/* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1903
1904#define MAX_UNITTEST_OVERLAYS 256
1905static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1906static int overlay_first_id = -1;
1907
1908static long of_unittest_overlay_tracked(int id)
1909{
1910 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1911 return 0;
1912 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1913}
1914
1915static void of_unittest_track_overlay(int id)
1916{
1917 if (overlay_first_id < 0)
1918 overlay_first_id = id;
1919 id -= overlay_first_id;
1920
1921 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1922 return;
1923 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1924}
1925
1926static void of_unittest_untrack_overlay(int id)
1927{
1928 if (overlay_first_id < 0)
1929 return;
1930 id -= overlay_first_id;
1931 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1932 return;
1933 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1934}
1935
1936static void of_unittest_destroy_tracked_overlays(void)
1937{
1938 int id, ret, defers, ovcs_id;
1939
1940 if (overlay_first_id < 0)
1941 return;
1942
1943 /* try until no defers */
1944 do {
1945 defers = 0;
1946 /* remove in reverse order */
1947 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1948 if (!of_unittest_overlay_tracked(id))
1949 continue;
1950
1951 ovcs_id = id + overlay_first_id;
1952 ret = of_overlay_remove(&ovcs_id);
1953 if (ret == -ENODEV) {
1954 pr_warn("%s: no overlay to destroy for #%d\n",
1955 __func__, id + overlay_first_id);
1956 continue;
1957 }
1958 if (ret != 0) {
1959 defers++;
1960 pr_warn("%s: overlay destroy failed for #%d\n",
1961 __func__, id + overlay_first_id);
1962 continue;
1963 }
1964
1965 of_unittest_untrack_overlay(id);
1966 }
1967 } while (defers > 0);
1968}
1969
1970static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1971{
1972 const char *overlay_name;
1973
1974 overlay_name = overlay_name_from_nr(overlay_nr);
1975
1976 if (!overlay_data_apply(overlay_name, overlay_id)) {
1977 unittest(0, "could not apply overlay \"%s\"\n",
1978 overlay_name);
1979 return -EFAULT;
1980 }
1981 of_unittest_track_overlay(*overlay_id);
1982
1983 return 0;
1984}
1985
1986/* apply an overlay while checking before and after states */
1987static int __init of_unittest_apply_overlay_check(int overlay_nr,
1988 int unittest_nr, int before, int after,
1989 enum overlay_type ovtype)
1990{
1991 int ret, ovcs_id;
1992
1993 /* unittest device must not be in before state */
1994 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
1995 unittest(0, "%s with device @\"%s\" %s\n",
1996 overlay_name_from_nr(overlay_nr),
1997 unittest_path(unittest_nr, ovtype),
1998 !before ? "enabled" : "disabled");
1999 return -EINVAL;
2000 }
2001
2002 ovcs_id = 0;
2003 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2004 if (ret != 0) {
2005 /* of_unittest_apply_overlay already called unittest() */
2006 return ret;
2007 }
2008
2009 /* unittest device must be to set to after state */
2010 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2011 unittest(0, "%s failed to create @\"%s\" %s\n",
2012 overlay_name_from_nr(overlay_nr),
2013 unittest_path(unittest_nr, ovtype),
2014 !after ? "enabled" : "disabled");
2015 return -EINVAL;
2016 }
2017
2018 return 0;
2019}
2020
2021/* apply an overlay and then revert it while checking before, after states */
2022static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2023 int unittest_nr, int before, int after,
2024 enum overlay_type ovtype)
2025{
2026 int ret, ovcs_id, save_id;
2027
2028 /* unittest device must be in before state */
2029 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2030 unittest(0, "%s with device @\"%s\" %s\n",
2031 overlay_name_from_nr(overlay_nr),
2032 unittest_path(unittest_nr, ovtype),
2033 !before ? "enabled" : "disabled");
2034 return -EINVAL;
2035 }
2036
2037 /* apply the overlay */
2038 ovcs_id = 0;
2039 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2040 if (ret != 0) {
2041 /* of_unittest_apply_overlay already called unittest() */
2042 return ret;
2043 }
2044
2045 /* unittest device must be in after state */
2046 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2047 unittest(0, "%s failed to create @\"%s\" %s\n",
2048 overlay_name_from_nr(overlay_nr),
2049 unittest_path(unittest_nr, ovtype),
2050 !after ? "enabled" : "disabled");
2051 return -EINVAL;
2052 }
2053
2054 save_id = ovcs_id;
2055 ret = of_overlay_remove(&ovcs_id);
2056 if (ret != 0) {
2057 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2058 overlay_name_from_nr(overlay_nr),
2059 unittest_path(unittest_nr, ovtype));
2060 return ret;
2061 }
2062 of_unittest_untrack_overlay(save_id);
2063
2064 /* unittest device must be again in before state */
2065 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2066 unittest(0, "%s with device @\"%s\" %s\n",
2067 overlay_name_from_nr(overlay_nr),
2068 unittest_path(unittest_nr, ovtype),
2069 !before ? "enabled" : "disabled");
2070 return -EINVAL;
2071 }
2072
2073 return 0;
2074}
2075
2076/* test activation of device */
2077static void __init of_unittest_overlay_0(void)
2078{
2079 int ret;
2080
2081 EXPECT_BEGIN(KERN_INFO,
2082 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2083
2084 /* device should enable */
2085 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2086
2087 EXPECT_END(KERN_INFO,
2088 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2089
2090 if (ret)
2091 return;
2092
2093 unittest(1, "overlay test %d passed\n", 0);
2094}
2095
2096/* test deactivation of device */
2097static void __init of_unittest_overlay_1(void)
2098{
2099 int ret;
2100
2101 EXPECT_BEGIN(KERN_INFO,
2102 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2103
2104 /* device should disable */
2105 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2106
2107 EXPECT_END(KERN_INFO,
2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2109
2110 if (ret)
2111 return;
2112
2113 unittest(1, "overlay test %d passed\n", 1);
2114
2115}
2116
2117/* test activation of device */
2118static void __init of_unittest_overlay_2(void)
2119{
2120 int ret;
2121
2122 EXPECT_BEGIN(KERN_INFO,
2123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2124
2125 /* device should enable */
2126 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2127
2128 EXPECT_END(KERN_INFO,
2129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2130
2131 if (ret)
2132 return;
2133 unittest(1, "overlay test %d passed\n", 2);
2134}
2135
2136/* test deactivation of device */
2137static void __init of_unittest_overlay_3(void)
2138{
2139 int ret;
2140
2141 EXPECT_BEGIN(KERN_INFO,
2142 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2143
2144 /* device should disable */
2145 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2146
2147 EXPECT_END(KERN_INFO,
2148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2149
2150 if (ret)
2151 return;
2152
2153 unittest(1, "overlay test %d passed\n", 3);
2154}
2155
2156/* test activation of a full device node */
2157static void __init of_unittest_overlay_4(void)
2158{
2159 /* device should disable */
2160 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2161 return;
2162
2163 unittest(1, "overlay test %d passed\n", 4);
2164}
2165
2166/* test overlay apply/revert sequence */
2167static void __init of_unittest_overlay_5(void)
2168{
2169 int ret;
2170
2171 EXPECT_BEGIN(KERN_INFO,
2172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2173
2174 /* device should disable */
2175 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2176
2177 EXPECT_END(KERN_INFO,
2178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2179
2180 if (ret)
2181 return;
2182
2183 unittest(1, "overlay test %d passed\n", 5);
2184}
2185
2186/* test overlay application in sequence */
2187static void __init of_unittest_overlay_6(void)
2188{
2189 int i, ov_id[2], ovcs_id;
2190 int overlay_nr = 6, unittest_nr = 6;
2191 int before = 0, after = 1;
2192 const char *overlay_name;
2193
2194 int ret;
2195
2196 /* unittest device must be in before state */
2197 for (i = 0; i < 2; i++) {
2198 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2199 != before) {
2200 unittest(0, "%s with device @\"%s\" %s\n",
2201 overlay_name_from_nr(overlay_nr + i),
2202 unittest_path(unittest_nr + i,
2203 PDEV_OVERLAY),
2204 !before ? "enabled" : "disabled");
2205 return;
2206 }
2207 }
2208
2209 /* apply the overlays */
2210
2211 EXPECT_BEGIN(KERN_INFO,
2212 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2213
2214 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2215
2216 ret = overlay_data_apply(overlay_name, &ovcs_id);
2217
2218 if (!ret) {
2219 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2220 return;
2221 }
2222 ov_id[0] = ovcs_id;
2223 of_unittest_track_overlay(ov_id[0]);
2224
2225 EXPECT_END(KERN_INFO,
2226 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2227
2228 EXPECT_BEGIN(KERN_INFO,
2229 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2230
2231 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2232
2233 ret = overlay_data_apply(overlay_name, &ovcs_id);
2234
2235 if (!ret) {
2236 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2237 return;
2238 }
2239 ov_id[1] = ovcs_id;
2240 of_unittest_track_overlay(ov_id[1]);
2241
2242 EXPECT_END(KERN_INFO,
2243 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2244
2245
2246 for (i = 0; i < 2; i++) {
2247 /* unittest device must be in after state */
2248 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2249 != after) {
2250 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2251 overlay_name_from_nr(overlay_nr + i),
2252 unittest_path(unittest_nr + i,
2253 PDEV_OVERLAY),
2254 !after ? "enabled" : "disabled");
2255 return;
2256 }
2257 }
2258
2259 for (i = 1; i >= 0; i--) {
2260 ovcs_id = ov_id[i];
2261 if (of_overlay_remove(&ovcs_id)) {
2262 unittest(0, "%s failed destroy @\"%s\"\n",
2263 overlay_name_from_nr(overlay_nr + i),
2264 unittest_path(unittest_nr + i,
2265 PDEV_OVERLAY));
2266 return;
2267 }
2268 of_unittest_untrack_overlay(ov_id[i]);
2269 }
2270
2271 for (i = 0; i < 2; i++) {
2272 /* unittest device must be again in before state */
2273 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2274 != before) {
2275 unittest(0, "%s with device @\"%s\" %s\n",
2276 overlay_name_from_nr(overlay_nr + i),
2277 unittest_path(unittest_nr + i,
2278 PDEV_OVERLAY),
2279 !before ? "enabled" : "disabled");
2280 return;
2281 }
2282 }
2283
2284 unittest(1, "overlay test %d passed\n", 6);
2285
2286}
2287
2288/* test overlay application in sequence */
2289static void __init of_unittest_overlay_8(void)
2290{
2291 int i, ov_id[2], ovcs_id;
2292 int overlay_nr = 8, unittest_nr = 8;
2293 const char *overlay_name;
2294 int ret;
2295
2296 /* we don't care about device state in this test */
2297
2298 EXPECT_BEGIN(KERN_INFO,
2299 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2300
2301 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2302
2303 ret = overlay_data_apply(overlay_name, &ovcs_id);
2304 if (!ret)
2305 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2306
2307 EXPECT_END(KERN_INFO,
2308 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2309
2310 if (!ret)
2311 return;
2312
2313 ov_id[0] = ovcs_id;
2314 of_unittest_track_overlay(ov_id[0]);
2315
2316 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2317
2318 EXPECT_BEGIN(KERN_INFO,
2319 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2320
2321 /* apply the overlays */
2322 ret = overlay_data_apply(overlay_name, &ovcs_id);
2323
2324 EXPECT_END(KERN_INFO,
2325 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2326
2327 if (!ret) {
2328 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2329 return;
2330 }
2331
2332 ov_id[1] = ovcs_id;
2333 of_unittest_track_overlay(ov_id[1]);
2334
2335 /* now try to remove first overlay (it should fail) */
2336 ovcs_id = ov_id[0];
2337
2338 EXPECT_BEGIN(KERN_INFO,
2339 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2340
2341 EXPECT_BEGIN(KERN_INFO,
2342 "OF: overlay: overlay #6 is not topmost");
2343
2344 ret = of_overlay_remove(&ovcs_id);
2345
2346 EXPECT_END(KERN_INFO,
2347 "OF: overlay: overlay #6 is not topmost");
2348
2349 EXPECT_END(KERN_INFO,
2350 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2351
2352 if (!ret) {
2353 unittest(0, "%s was destroyed @\"%s\"\n",
2354 overlay_name_from_nr(overlay_nr + 0),
2355 unittest_path(unittest_nr,
2356 PDEV_OVERLAY));
2357 return;
2358 }
2359
2360 /* removing them in order should work */
2361 for (i = 1; i >= 0; i--) {
2362 ovcs_id = ov_id[i];
2363 if (of_overlay_remove(&ovcs_id)) {
2364 unittest(0, "%s not destroyed @\"%s\"\n",
2365 overlay_name_from_nr(overlay_nr + i),
2366 unittest_path(unittest_nr,
2367 PDEV_OVERLAY));
2368 return;
2369 }
2370 of_unittest_untrack_overlay(ov_id[i]);
2371 }
2372
2373 unittest(1, "overlay test %d passed\n", 8);
2374}
2375
2376/* test insertion of a bus with parent devices */
2377static void __init of_unittest_overlay_10(void)
2378{
2379 int ret;
2380 char *child_path;
2381
2382 /* device should disable */
2383 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2384
2385 if (unittest(ret == 0,
2386 "overlay test %d failed; overlay application\n", 10))
2387 return;
2388
2389 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2390 unittest_path(10, PDEV_OVERLAY));
2391 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2392 return;
2393
2394 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2395 kfree(child_path);
2396
2397 unittest(ret, "overlay test %d failed; no child device\n", 10);
2398}
2399
2400/* test insertion of a bus with parent devices (and revert) */
2401static void __init of_unittest_overlay_11(void)
2402{
2403 int ret;
2404
2405 /* device should disable */
2406 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2407 PDEV_OVERLAY);
2408
2409 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2410}
2411
2412#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2413
2414struct unittest_i2c_bus_data {
2415 struct platform_device *pdev;
2416 struct i2c_adapter adap;
2417};
2418
2419static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2420 struct i2c_msg *msgs, int num)
2421{
2422 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2423
2424 (void)std;
2425
2426 return num;
2427}
2428
2429static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2430{
2431 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2432}
2433
2434static const struct i2c_algorithm unittest_i2c_algo = {
2435 .master_xfer = unittest_i2c_master_xfer,
2436 .functionality = unittest_i2c_functionality,
2437};
2438
2439static int unittest_i2c_bus_probe(struct platform_device *pdev)
2440{
2441 struct device *dev = &pdev->dev;
2442 struct device_node *np = dev->of_node;
2443 struct unittest_i2c_bus_data *std;
2444 struct i2c_adapter *adap;
2445 int ret;
2446
2447 if (np == NULL) {
2448 dev_err(dev, "No OF data for device\n");
2449 return -EINVAL;
2450
2451 }
2452
2453 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2454
2455 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2456 if (!std)
2457 return -ENOMEM;
2458
2459 /* link them together */
2460 std->pdev = pdev;
2461 platform_set_drvdata(pdev, std);
2462
2463 adap = &std->adap;
2464 i2c_set_adapdata(adap, std);
2465 adap->nr = -1;
2466 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2467 adap->class = I2C_CLASS_DEPRECATED;
2468 adap->algo = &unittest_i2c_algo;
2469 adap->dev.parent = dev;
2470 adap->dev.of_node = dev->of_node;
2471 adap->timeout = 5 * HZ;
2472 adap->retries = 3;
2473
2474 ret = i2c_add_numbered_adapter(adap);
2475 if (ret != 0) {
2476 dev_err(dev, "Failed to add I2C adapter\n");
2477 return ret;
2478 }
2479
2480 return 0;
2481}
2482
2483static int unittest_i2c_bus_remove(struct platform_device *pdev)
2484{
2485 struct device *dev = &pdev->dev;
2486 struct device_node *np = dev->of_node;
2487 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2488
2489 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2490 i2c_del_adapter(&std->adap);
2491
2492 return 0;
2493}
2494
2495static const struct of_device_id unittest_i2c_bus_match[] = {
2496 { .compatible = "unittest-i2c-bus", },
2497 {},
2498};
2499
2500static struct platform_driver unittest_i2c_bus_driver = {
2501 .probe = unittest_i2c_bus_probe,
2502 .remove = unittest_i2c_bus_remove,
2503 .driver = {
2504 .name = "unittest-i2c-bus",
2505 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2506 },
2507};
2508
2509static int unittest_i2c_dev_probe(struct i2c_client *client,
2510 const struct i2c_device_id *id)
2511{
2512 struct device *dev = &client->dev;
2513 struct device_node *np = client->dev.of_node;
2514
2515 if (!np) {
2516 dev_err(dev, "No OF node\n");
2517 return -EINVAL;
2518 }
2519
2520 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2521
2522 return 0;
2523};
2524
2525static int unittest_i2c_dev_remove(struct i2c_client *client)
2526{
2527 struct device *dev = &client->dev;
2528 struct device_node *np = client->dev.of_node;
2529
2530 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2531 return 0;
2532}
2533
2534static const struct i2c_device_id unittest_i2c_dev_id[] = {
2535 { .name = "unittest-i2c-dev" },
2536 { }
2537};
2538
2539static struct i2c_driver unittest_i2c_dev_driver = {
2540 .driver = {
2541 .name = "unittest-i2c-dev",
2542 },
2543 .probe = unittest_i2c_dev_probe,
2544 .remove = unittest_i2c_dev_remove,
2545 .id_table = unittest_i2c_dev_id,
2546};
2547
2548#if IS_BUILTIN(CONFIG_I2C_MUX)
2549
2550static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2551{
2552 return 0;
2553}
2554
2555static int unittest_i2c_mux_probe(struct i2c_client *client,
2556 const struct i2c_device_id *id)
2557{
2558 int i, nchans;
2559 struct device *dev = &client->dev;
2560 struct i2c_adapter *adap = client->adapter;
2561 struct device_node *np = client->dev.of_node, *child;
2562 struct i2c_mux_core *muxc;
2563 u32 reg, max_reg;
2564
2565 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2566
2567 if (!np) {
2568 dev_err(dev, "No OF node\n");
2569 return -EINVAL;
2570 }
2571
2572 max_reg = (u32)-1;
2573 for_each_child_of_node(np, child) {
2574 if (of_property_read_u32(child, "reg", ®))
2575 continue;
2576 if (max_reg == (u32)-1 || reg > max_reg)
2577 max_reg = reg;
2578 }
2579 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2580 if (nchans == 0) {
2581 dev_err(dev, "No channels\n");
2582 return -EINVAL;
2583 }
2584
2585 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2586 unittest_i2c_mux_select_chan, NULL);
2587 if (!muxc)
2588 return -ENOMEM;
2589 for (i = 0; i < nchans; i++) {
2590 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2591 dev_err(dev, "Failed to register mux #%d\n", i);
2592 i2c_mux_del_adapters(muxc);
2593 return -ENODEV;
2594 }
2595 }
2596
2597 i2c_set_clientdata(client, muxc);
2598
2599 return 0;
2600};
2601
2602static int unittest_i2c_mux_remove(struct i2c_client *client)
2603{
2604 struct device *dev = &client->dev;
2605 struct device_node *np = client->dev.of_node;
2606 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2607
2608 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2609 i2c_mux_del_adapters(muxc);
2610 return 0;
2611}
2612
2613static const struct i2c_device_id unittest_i2c_mux_id[] = {
2614 { .name = "unittest-i2c-mux" },
2615 { }
2616};
2617
2618static struct i2c_driver unittest_i2c_mux_driver = {
2619 .driver = {
2620 .name = "unittest-i2c-mux",
2621 },
2622 .probe = unittest_i2c_mux_probe,
2623 .remove = unittest_i2c_mux_remove,
2624 .id_table = unittest_i2c_mux_id,
2625};
2626
2627#endif
2628
2629static int of_unittest_overlay_i2c_init(void)
2630{
2631 int ret;
2632
2633 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2634 if (unittest(ret == 0,
2635 "could not register unittest i2c device driver\n"))
2636 return ret;
2637
2638 ret = platform_driver_register(&unittest_i2c_bus_driver);
2639
2640 if (unittest(ret == 0,
2641 "could not register unittest i2c bus driver\n"))
2642 return ret;
2643
2644#if IS_BUILTIN(CONFIG_I2C_MUX)
2645
2646 EXPECT_BEGIN(KERN_INFO,
2647 "i2c i2c-1: Added multiplexed i2c bus 2");
2648
2649 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2650
2651 EXPECT_END(KERN_INFO,
2652 "i2c i2c-1: Added multiplexed i2c bus 2");
2653
2654 if (unittest(ret == 0,
2655 "could not register unittest i2c mux driver\n"))
2656 return ret;
2657#endif
2658
2659 return 0;
2660}
2661
2662static void of_unittest_overlay_i2c_cleanup(void)
2663{
2664#if IS_BUILTIN(CONFIG_I2C_MUX)
2665 i2c_del_driver(&unittest_i2c_mux_driver);
2666#endif
2667 platform_driver_unregister(&unittest_i2c_bus_driver);
2668 i2c_del_driver(&unittest_i2c_dev_driver);
2669}
2670
2671static void __init of_unittest_overlay_i2c_12(void)
2672{
2673 int ret;
2674
2675 /* device should enable */
2676 EXPECT_BEGIN(KERN_INFO,
2677 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2678
2679 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2680
2681 EXPECT_END(KERN_INFO,
2682 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2683
2684 if (ret)
2685 return;
2686
2687 unittest(1, "overlay test %d passed\n", 12);
2688}
2689
2690/* test deactivation of device */
2691static void __init of_unittest_overlay_i2c_13(void)
2692{
2693 int ret;
2694
2695 EXPECT_BEGIN(KERN_INFO,
2696 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2697
2698 /* device should disable */
2699 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2700
2701 EXPECT_END(KERN_INFO,
2702 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2703
2704 if (ret)
2705 return;
2706
2707 unittest(1, "overlay test %d passed\n", 13);
2708}
2709
2710/* just check for i2c mux existence */
2711static void of_unittest_overlay_i2c_14(void)
2712{
2713}
2714
2715static void __init of_unittest_overlay_i2c_15(void)
2716{
2717 int ret;
2718
2719 /* device should enable */
2720 EXPECT_BEGIN(KERN_INFO,
2721 "i2c i2c-1: Added multiplexed i2c bus 3");
2722
2723 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2724
2725 EXPECT_END(KERN_INFO,
2726 "i2c i2c-1: Added multiplexed i2c bus 3");
2727
2728 if (ret)
2729 return;
2730
2731 unittest(1, "overlay test %d passed\n", 15);
2732}
2733
2734#else
2735
2736static inline void of_unittest_overlay_i2c_14(void) { }
2737static inline void of_unittest_overlay_i2c_15(void) { }
2738
2739#endif
2740
2741static void __init of_unittest_overlay(void)
2742{
2743 struct device_node *bus_np = NULL;
2744
2745 if (platform_driver_register(&unittest_driver)) {
2746 unittest(0, "could not register unittest driver\n");
2747 goto out;
2748 }
2749
2750 bus_np = of_find_node_by_path(bus_path);
2751 if (bus_np == NULL) {
2752 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2753 goto out;
2754 }
2755
2756 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2757 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2758 goto out;
2759 }
2760
2761 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2762 unittest(0, "could not find unittest0 @ \"%s\"\n",
2763 unittest_path(100, PDEV_OVERLAY));
2764 goto out;
2765 }
2766
2767 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2768 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2769 unittest_path(101, PDEV_OVERLAY));
2770 goto out;
2771 }
2772
2773 unittest(1, "basic infrastructure of overlays passed");
2774
2775 /* tests in sequence */
2776 of_unittest_overlay_0();
2777 of_unittest_overlay_1();
2778 of_unittest_overlay_2();
2779 of_unittest_overlay_3();
2780 of_unittest_overlay_4();
2781 of_unittest_overlay_5();
2782 of_unittest_overlay_6();
2783 of_unittest_overlay_8();
2784
2785 of_unittest_overlay_10();
2786 of_unittest_overlay_11();
2787
2788#if IS_BUILTIN(CONFIG_I2C)
2789 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2790 goto out;
2791
2792 of_unittest_overlay_i2c_12();
2793 of_unittest_overlay_i2c_13();
2794 of_unittest_overlay_i2c_14();
2795 of_unittest_overlay_i2c_15();
2796
2797 of_unittest_overlay_i2c_cleanup();
2798#endif
2799
2800 of_unittest_overlay_gpio();
2801
2802 of_unittest_destroy_tracked_overlays();
2803
2804out:
2805 of_node_put(bus_np);
2806}
2807
2808#else
2809static inline void __init of_unittest_overlay(void) { }
2810#endif
2811
2812#ifdef CONFIG_OF_OVERLAY
2813
2814/*
2815 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2816 * in scripts/Makefile.lib
2817 */
2818
2819#define OVERLAY_INFO_EXTERN(name) \
2820 extern uint8_t __dtb_##name##_begin[]; \
2821 extern uint8_t __dtb_##name##_end[]
2822
2823#define OVERLAY_INFO(overlay_name, expected) \
2824{ .dtb_begin = __dtb_##overlay_name##_begin, \
2825 .dtb_end = __dtb_##overlay_name##_end, \
2826 .expected_result = expected, \
2827 .name = #overlay_name, \
2828}
2829
2830struct overlay_info {
2831 uint8_t *dtb_begin;
2832 uint8_t *dtb_end;
2833 int expected_result;
2834 int overlay_id;
2835 char *name;
2836};
2837
2838OVERLAY_INFO_EXTERN(overlay_base);
2839OVERLAY_INFO_EXTERN(overlay);
2840OVERLAY_INFO_EXTERN(overlay_0);
2841OVERLAY_INFO_EXTERN(overlay_1);
2842OVERLAY_INFO_EXTERN(overlay_2);
2843OVERLAY_INFO_EXTERN(overlay_3);
2844OVERLAY_INFO_EXTERN(overlay_4);
2845OVERLAY_INFO_EXTERN(overlay_5);
2846OVERLAY_INFO_EXTERN(overlay_6);
2847OVERLAY_INFO_EXTERN(overlay_7);
2848OVERLAY_INFO_EXTERN(overlay_8);
2849OVERLAY_INFO_EXTERN(overlay_9);
2850OVERLAY_INFO_EXTERN(overlay_10);
2851OVERLAY_INFO_EXTERN(overlay_11);
2852OVERLAY_INFO_EXTERN(overlay_12);
2853OVERLAY_INFO_EXTERN(overlay_13);
2854OVERLAY_INFO_EXTERN(overlay_15);
2855OVERLAY_INFO_EXTERN(overlay_gpio_01);
2856OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2857OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2858OVERLAY_INFO_EXTERN(overlay_gpio_03);
2859OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2860OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2861OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2862OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2863OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2864OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2865
2866/* entries found by name */
2867static struct overlay_info overlays[] = {
2868 OVERLAY_INFO(overlay_base, -9999),
2869 OVERLAY_INFO(overlay, 0),
2870 OVERLAY_INFO(overlay_0, 0),
2871 OVERLAY_INFO(overlay_1, 0),
2872 OVERLAY_INFO(overlay_2, 0),
2873 OVERLAY_INFO(overlay_3, 0),
2874 OVERLAY_INFO(overlay_4, 0),
2875 OVERLAY_INFO(overlay_5, 0),
2876 OVERLAY_INFO(overlay_6, 0),
2877 OVERLAY_INFO(overlay_7, 0),
2878 OVERLAY_INFO(overlay_8, 0),
2879 OVERLAY_INFO(overlay_9, 0),
2880 OVERLAY_INFO(overlay_10, 0),
2881 OVERLAY_INFO(overlay_11, 0),
2882 OVERLAY_INFO(overlay_12, 0),
2883 OVERLAY_INFO(overlay_13, 0),
2884 OVERLAY_INFO(overlay_15, 0),
2885 OVERLAY_INFO(overlay_gpio_01, 0),
2886 OVERLAY_INFO(overlay_gpio_02a, 0),
2887 OVERLAY_INFO(overlay_gpio_02b, 0),
2888 OVERLAY_INFO(overlay_gpio_03, 0),
2889 OVERLAY_INFO(overlay_gpio_04a, 0),
2890 OVERLAY_INFO(overlay_gpio_04b, 0),
2891 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2892 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2893 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2894 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2895 /* end marker */
2896 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2897};
2898
2899static struct device_node *overlay_base_root;
2900
2901static void * __init dt_alloc_memory(u64 size, u64 align)
2902{
2903 void *ptr = memblock_alloc(size, align);
2904
2905 if (!ptr)
2906 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2907 __func__, size, align);
2908
2909 return ptr;
2910}
2911
2912/*
2913 * Create base device tree for the overlay unittest.
2914 *
2915 * This is called from very early boot code.
2916 *
2917 * Do as much as possible the same way as done in __unflatten_device_tree
2918 * and other early boot steps for the normal FDT so that the overlay base
2919 * unflattened tree will have the same characteristics as the real tree
2920 * (such as having memory allocated by the early allocator). The goal
2921 * is to test "the real thing" as much as possible, and test "test setup
2922 * code" as little as possible.
2923 *
2924 * Have to stop before resolving phandles, because that uses kmalloc.
2925 */
2926void __init unittest_unflatten_overlay_base(void)
2927{
2928 struct overlay_info *info;
2929 u32 data_size;
2930 void *new_fdt;
2931 u32 size;
2932 int found = 0;
2933 const char *overlay_name = "overlay_base";
2934
2935 for (info = overlays; info && info->name; info++) {
2936 if (!strcmp(overlay_name, info->name)) {
2937 found = 1;
2938 break;
2939 }
2940 }
2941 if (!found) {
2942 pr_err("no overlay data for %s\n", overlay_name);
2943 return;
2944 }
2945
2946 info = &overlays[0];
2947
2948 if (info->expected_result != -9999) {
2949 pr_err("No dtb 'overlay_base' to attach\n");
2950 return;
2951 }
2952
2953 data_size = info->dtb_end - info->dtb_begin;
2954 if (!data_size) {
2955 pr_err("No dtb 'overlay_base' to attach\n");
2956 return;
2957 }
2958
2959 size = fdt_totalsize(info->dtb_begin);
2960 if (size != data_size) {
2961 pr_err("dtb 'overlay_base' header totalsize != actual size");
2962 return;
2963 }
2964
2965 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2966 if (!new_fdt) {
2967 pr_err("alloc for dtb 'overlay_base' failed");
2968 return;
2969 }
2970
2971 memcpy(new_fdt, info->dtb_begin, size);
2972
2973 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2974 dt_alloc_memory, true);
2975}
2976
2977/*
2978 * The purpose of of_unittest_overlay_data_add is to add an
2979 * overlay in the normal fashion. This is a test of the whole
2980 * picture, instead of testing individual elements.
2981 *
2982 * A secondary purpose is to be able to verify that the contents of
2983 * /proc/device-tree/ contains the updated structure and values from
2984 * the overlay. That must be verified separately in user space.
2985 *
2986 * Return 0 on unexpected error.
2987 */
2988static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2989{
2990 struct overlay_info *info;
2991 int found = 0;
2992 int ret;
2993 u32 size;
2994
2995 for (info = overlays; info && info->name; info++) {
2996 if (!strcmp(overlay_name, info->name)) {
2997 found = 1;
2998 break;
2999 }
3000 }
3001 if (!found) {
3002 pr_err("no overlay data for %s\n", overlay_name);
3003 return 0;
3004 }
3005
3006 size = info->dtb_end - info->dtb_begin;
3007 if (!size)
3008 pr_err("no overlay data for %s\n", overlay_name);
3009
3010 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3011 if (overlay_id)
3012 *overlay_id = info->overlay_id;
3013 if (ret < 0)
3014 goto out;
3015
3016 pr_debug("%s applied\n", overlay_name);
3017
3018out:
3019 if (ret != info->expected_result)
3020 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3021 info->expected_result, ret, overlay_name);
3022
3023 return (ret == info->expected_result);
3024}
3025
3026/*
3027 * The purpose of of_unittest_overlay_high_level is to add an overlay
3028 * in the normal fashion. This is a test of the whole picture,
3029 * instead of individual elements.
3030 *
3031 * The first part of the function is _not_ normal overlay usage; it is
3032 * finishing splicing the base overlay device tree into the live tree.
3033 */
3034static __init void of_unittest_overlay_high_level(void)
3035{
3036 struct device_node *last_sibling;
3037 struct device_node *np;
3038 struct device_node *of_symbols;
3039 struct device_node *overlay_base_symbols;
3040 struct device_node **pprev;
3041 struct property *prop;
3042 int ret;
3043
3044 if (!overlay_base_root) {
3045 unittest(0, "overlay_base_root not initialized\n");
3046 return;
3047 }
3048
3049 /*
3050 * Could not fixup phandles in unittest_unflatten_overlay_base()
3051 * because kmalloc() was not yet available.
3052 */
3053 of_overlay_mutex_lock();
3054 of_resolve_phandles(overlay_base_root);
3055 of_overlay_mutex_unlock();
3056
3057
3058 /*
3059 * do not allow overlay_base to duplicate any node already in
3060 * tree, this greatly simplifies the code
3061 */
3062
3063 /*
3064 * remove overlay_base_root node "__local_fixups", after
3065 * being used by of_resolve_phandles()
3066 */
3067 pprev = &overlay_base_root->child;
3068 for (np = overlay_base_root->child; np; np = np->sibling) {
3069 if (of_node_name_eq(np, "__local_fixups__")) {
3070 *pprev = np->sibling;
3071 break;
3072 }
3073 pprev = &np->sibling;
3074 }
3075
3076 /* remove overlay_base_root node "__symbols__" if in live tree */
3077 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3078 if (of_symbols) {
3079 /* will have to graft properties from node into live tree */
3080 pprev = &overlay_base_root->child;
3081 for (np = overlay_base_root->child; np; np = np->sibling) {
3082 if (of_node_name_eq(np, "__symbols__")) {
3083 overlay_base_symbols = np;
3084 *pprev = np->sibling;
3085 break;
3086 }
3087 pprev = &np->sibling;
3088 }
3089 }
3090
3091 for_each_child_of_node(overlay_base_root, np) {
3092 struct device_node *base_child;
3093 for_each_child_of_node(of_root, base_child) {
3094 if (!strcmp(np->full_name, base_child->full_name)) {
3095 unittest(0, "illegal node name in overlay_base %pOFn",
3096 np);
3097 return;
3098 }
3099 }
3100 }
3101
3102 /*
3103 * overlay 'overlay_base' is not allowed to have root
3104 * properties, so only need to splice nodes into main device tree.
3105 *
3106 * root node of *overlay_base_root will not be freed, it is lost
3107 * memory.
3108 */
3109
3110 for (np = overlay_base_root->child; np; np = np->sibling)
3111 np->parent = of_root;
3112
3113 mutex_lock(&of_mutex);
3114
3115 for (last_sibling = np = of_root->child; np; np = np->sibling)
3116 last_sibling = np;
3117
3118 if (last_sibling)
3119 last_sibling->sibling = overlay_base_root->child;
3120 else
3121 of_root->child = overlay_base_root->child;
3122
3123 for_each_of_allnodes_from(overlay_base_root, np)
3124 __of_attach_node_sysfs(np);
3125
3126 if (of_symbols) {
3127 struct property *new_prop;
3128 for_each_property_of_node(overlay_base_symbols, prop) {
3129
3130 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3131 if (!new_prop) {
3132 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3133 prop->name);
3134 goto err_unlock;
3135 }
3136 if (__of_add_property(of_symbols, new_prop)) {
3137 kfree(new_prop->name);
3138 kfree(new_prop->value);
3139 kfree(new_prop);
3140 /* "name" auto-generated by unflatten */
3141 if (!strcmp(prop->name, "name"))
3142 continue;
3143 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3144 prop->name);
3145 goto err_unlock;
3146 }
3147 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3148 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3149 prop->name);
3150 goto err_unlock;
3151 }
3152 }
3153 }
3154
3155 mutex_unlock(&of_mutex);
3156
3157
3158 /* now do the normal overlay usage test */
3159
3160 EXPECT_BEGIN(KERN_ERR,
3161 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3162 EXPECT_BEGIN(KERN_ERR,
3163 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3164 EXPECT_BEGIN(KERN_ERR,
3165 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3166 EXPECT_BEGIN(KERN_ERR,
3167 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3168 EXPECT_BEGIN(KERN_ERR,
3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3170 EXPECT_BEGIN(KERN_ERR,
3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3172 EXPECT_BEGIN(KERN_ERR,
3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3174 EXPECT_BEGIN(KERN_ERR,
3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3176 EXPECT_BEGIN(KERN_ERR,
3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3178 EXPECT_BEGIN(KERN_ERR,
3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3180 EXPECT_BEGIN(KERN_ERR,
3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3182
3183 ret = overlay_data_apply("overlay", NULL);
3184
3185 EXPECT_END(KERN_ERR,
3186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3187 EXPECT_END(KERN_ERR,
3188 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3189 EXPECT_END(KERN_ERR,
3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3191 EXPECT_END(KERN_ERR,
3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3193 EXPECT_END(KERN_ERR,
3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3195 EXPECT_END(KERN_ERR,
3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3197 EXPECT_END(KERN_ERR,
3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3199 EXPECT_END(KERN_ERR,
3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3201 EXPECT_END(KERN_ERR,
3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3203 EXPECT_END(KERN_ERR,
3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3205 EXPECT_END(KERN_ERR,
3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3207
3208 unittest(ret, "Adding overlay 'overlay' failed\n");
3209
3210 EXPECT_BEGIN(KERN_ERR,
3211 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3212 EXPECT_BEGIN(KERN_ERR,
3213 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3214
3215 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3216 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3217
3218 EXPECT_END(KERN_ERR,
3219 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3220 EXPECT_END(KERN_ERR,
3221 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3222
3223 EXPECT_BEGIN(KERN_ERR,
3224 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3225 EXPECT_BEGIN(KERN_ERR,
3226 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3227 EXPECT_BEGIN(KERN_ERR,
3228 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3229
3230 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3231 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3232
3233 EXPECT_END(KERN_ERR,
3234 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3235 EXPECT_END(KERN_ERR,
3236 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3237 EXPECT_END(KERN_ERR,
3238 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3239
3240 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3241 "Adding overlay 'overlay_bad_phandle' failed\n");
3242
3243 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3244 "Adding overlay 'overlay_bad_symbol' failed\n");
3245
3246 return;
3247
3248err_unlock:
3249 mutex_unlock(&of_mutex);
3250}
3251
3252#else
3253
3254static inline __init void of_unittest_overlay_high_level(void) {}
3255
3256#endif
3257
3258static int __init of_unittest(void)
3259{
3260 struct device_node *np;
3261 int res;
3262
3263 pr_info("start of unittest - you will see error messages\n");
3264
3265 /* adding data for unittest */
3266
3267 if (IS_ENABLED(CONFIG_UML))
3268 unittest_unflatten_overlay_base();
3269
3270 res = unittest_data_add();
3271 if (res)
3272 return res;
3273 if (!of_aliases)
3274 of_aliases = of_find_node_by_path("/aliases");
3275
3276 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3277 if (!np) {
3278 pr_info("No testcase data in device tree; not running tests\n");
3279 return 0;
3280 }
3281 of_node_put(np);
3282
3283 of_unittest_check_tree_linkage();
3284 of_unittest_check_phandles();
3285 of_unittest_find_node_by_name();
3286 of_unittest_dynamic();
3287 of_unittest_parse_phandle_with_args();
3288 of_unittest_parse_phandle_with_args_map();
3289 of_unittest_printf();
3290 of_unittest_property_string();
3291 of_unittest_property_copy();
3292 of_unittest_changeset();
3293 of_unittest_parse_interrupts();
3294 of_unittest_parse_interrupts_extended();
3295 of_unittest_dma_get_max_cpu_address();
3296 of_unittest_parse_dma_ranges();
3297 of_unittest_pci_dma_ranges();
3298 of_unittest_match_node();
3299 of_unittest_platform_populate();
3300 of_unittest_overlay();
3301
3302 /* Double check linkage after removing testcase data */
3303 of_unittest_check_tree_linkage();
3304
3305 of_unittest_overlay_high_level();
3306
3307 pr_info("end of unittest - %i passed, %i failed\n",
3308 unittest_results.passed, unittest_results.failed);
3309
3310 return 0;
3311}
3312late_initcall(of_unittest);