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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/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/pci.h>
26#include <linux/kernel.h>
27
28#include <linux/i2c.h>
29#include <linux/i2c-mux.h>
30#include <linux/gpio/driver.h>
31
32#include <linux/bitops.h>
33
34#include "of_private.h"
35
36static struct unittest_results {
37 int passed;
38 int failed;
39} unittest_results;
40
41#define unittest(result, fmt, ...) ({ \
42 bool failed = !(result); \
43 if (failed) { \
44 unittest_results.failed++; \
45 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
46 } else { \
47 unittest_results.passed++; \
48 pr_info("pass %s():%i\n", __func__, __LINE__); \
49 } \
50 failed; \
51})
52
53#ifdef CONFIG_OF_KOBJ
54#define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref)
55#else
56#define OF_KREF_READ(NODE) 1
57#endif
58
59/*
60 * Expected message may have a message level other than KERN_INFO.
61 * Print the expected message only if the current loglevel will allow
62 * the actual message to print.
63 *
64 * Do not use EXPECT_BEGIN(), EXPECT_END(), EXPECT_NOT_BEGIN(), or
65 * EXPECT_NOT_END() to report messages expected to be reported or not
66 * reported by pr_debug().
67 */
68#define EXPECT_BEGIN(level, fmt, ...) \
69 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
70
71#define EXPECT_END(level, fmt, ...) \
72 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
73
74#define EXPECT_NOT_BEGIN(level, fmt, ...) \
75 printk(level pr_fmt("EXPECT_NOT \\ : ") fmt, ##__VA_ARGS__)
76
77#define EXPECT_NOT_END(level, fmt, ...) \
78 printk(level pr_fmt("EXPECT_NOT / : ") fmt, ##__VA_ARGS__)
79
80static void __init of_unittest_find_node_by_name(void)
81{
82 struct device_node *np;
83 const char *options, *name;
84
85 np = of_find_node_by_path("/testcase-data");
86 name = kasprintf(GFP_KERNEL, "%pOF", np);
87 unittest(np && name && !strcmp("/testcase-data", name),
88 "find /testcase-data failed\n");
89 of_node_put(np);
90 kfree(name);
91
92 /* Test if trailing '/' works */
93 np = of_find_node_by_path("/testcase-data/");
94 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
95
96 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
97 name = kasprintf(GFP_KERNEL, "%pOF", np);
98 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
99 "find /testcase-data/phandle-tests/consumer-a failed\n");
100 of_node_put(np);
101 kfree(name);
102
103 np = of_find_node_by_path("testcase-alias");
104 name = kasprintf(GFP_KERNEL, "%pOF", np);
105 unittest(np && name && !strcmp("/testcase-data", name),
106 "find testcase-alias failed\n");
107 of_node_put(np);
108 kfree(name);
109
110 /* Test if trailing '/' works on aliases */
111 np = of_find_node_by_path("testcase-alias/");
112 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
113
114 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
115 name = kasprintf(GFP_KERNEL, "%pOF", np);
116 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
117 "find testcase-alias/phandle-tests/consumer-a failed\n");
118 of_node_put(np);
119 kfree(name);
120
121 np = of_find_node_by_path("/testcase-data/missing-path");
122 unittest(!np, "non-existent path returned node %pOF\n", np);
123 of_node_put(np);
124
125 np = of_find_node_by_path("missing-alias");
126 unittest(!np, "non-existent alias returned node %pOF\n", np);
127 of_node_put(np);
128
129 np = of_find_node_by_path("testcase-alias/missing-path");
130 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
131 of_node_put(np);
132
133 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
134 unittest(np && !strcmp("testoption", options),
135 "option path test failed\n");
136 of_node_put(np);
137
138 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
139 unittest(np && !strcmp("test/option", options),
140 "option path test, subcase #1 failed\n");
141 of_node_put(np);
142
143 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
144 unittest(np && !strcmp("test/option", options),
145 "option path test, subcase #2 failed\n");
146 of_node_put(np);
147
148 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
149 unittest(np, "NULL option path test failed\n");
150 of_node_put(np);
151
152 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
153 &options);
154 unittest(np && !strcmp("testaliasoption", options),
155 "option alias path test failed\n");
156 of_node_put(np);
157
158 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
159 &options);
160 unittest(np && !strcmp("test/alias/option", options),
161 "option alias path test, subcase #1 failed\n");
162 of_node_put(np);
163
164 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
165 unittest(np, "NULL option alias path test failed\n");
166 of_node_put(np);
167
168 options = "testoption";
169 np = of_find_node_opts_by_path("testcase-alias", &options);
170 unittest(np && !options, "option clearing test failed\n");
171 of_node_put(np);
172
173 options = "testoption";
174 np = of_find_node_opts_by_path("/", &options);
175 unittest(np && !options, "option clearing root node test failed\n");
176 of_node_put(np);
177}
178
179static void __init of_unittest_dynamic(void)
180{
181 struct device_node *np;
182 struct property *prop;
183
184 np = of_find_node_by_path("/testcase-data");
185 if (!np) {
186 pr_err("missing testcase data\n");
187 return;
188 }
189
190 /* Array of 4 properties for the purpose of testing */
191 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
192 if (!prop) {
193 unittest(0, "kzalloc() failed\n");
194 return;
195 }
196
197 /* Add a new property - should pass*/
198 prop->name = "new-property";
199 prop->value = "new-property-data";
200 prop->length = strlen(prop->value) + 1;
201 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
202
203 /* Try to add an existing property - should fail */
204 prop++;
205 prop->name = "new-property";
206 prop->value = "new-property-data-should-fail";
207 prop->length = strlen(prop->value) + 1;
208 unittest(of_add_property(np, prop) != 0,
209 "Adding an existing property should have failed\n");
210
211 /* Try to modify an existing property - should pass */
212 prop->value = "modify-property-data-should-pass";
213 prop->length = strlen(prop->value) + 1;
214 unittest(of_update_property(np, prop) == 0,
215 "Updating an existing property should have passed\n");
216
217 /* Try to modify non-existent property - should pass*/
218 prop++;
219 prop->name = "modify-property";
220 prop->value = "modify-missing-property-data-should-pass";
221 prop->length = strlen(prop->value) + 1;
222 unittest(of_update_property(np, prop) == 0,
223 "Updating a missing property should have passed\n");
224
225 /* Remove property - should pass */
226 unittest(of_remove_property(np, prop) == 0,
227 "Removing a property should have passed\n");
228
229 /* Adding very large property - should pass */
230 prop++;
231 prop->name = "large-property-PAGE_SIZEx8";
232 prop->length = PAGE_SIZE * 8;
233 prop->value = kzalloc(prop->length, GFP_KERNEL);
234 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
235 if (prop->value)
236 unittest(of_add_property(np, prop) == 0,
237 "Adding a large property should have passed\n");
238}
239
240static int __init of_unittest_check_node_linkage(struct device_node *np)
241{
242 struct device_node *child;
243 int count = 0, rc;
244
245 for_each_child_of_node(np, child) {
246 if (child->parent != np) {
247 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
248 child, np);
249 rc = -EINVAL;
250 goto put_child;
251 }
252
253 rc = of_unittest_check_node_linkage(child);
254 if (rc < 0)
255 goto put_child;
256 count += rc;
257 }
258
259 return count + 1;
260put_child:
261 of_node_put(child);
262 return rc;
263}
264
265static void __init of_unittest_check_tree_linkage(void)
266{
267 struct device_node *np;
268 int allnode_count = 0, child_count;
269
270 if (!of_root)
271 return;
272
273 for_each_of_allnodes(np)
274 allnode_count++;
275 child_count = of_unittest_check_node_linkage(of_root);
276
277 unittest(child_count > 0, "Device node data structure is corrupted\n");
278 unittest(child_count == allnode_count,
279 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
280 allnode_count, child_count);
281 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
282}
283
284static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
285 const char *expected)
286{
287 unsigned char *buf;
288 int buf_size;
289 int size, i;
290
291 buf_size = strlen(expected) + 10;
292 buf = kmalloc(buf_size, GFP_KERNEL);
293 if (!buf)
294 return;
295
296 /* Baseline; check conversion with a large size limit */
297 memset(buf, 0xff, buf_size);
298 size = snprintf(buf, buf_size - 2, fmt, np);
299
300 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
301 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
302 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
303 fmt, expected, buf);
304
305 /* Make sure length limits work */
306 size++;
307 for (i = 0; i < 2; i++, size--) {
308 /* Clear the buffer, and make sure it works correctly still */
309 memset(buf, 0xff, buf_size);
310 snprintf(buf, size+1, fmt, np);
311 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
312 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
313 size, fmt, expected, buf);
314 }
315 kfree(buf);
316}
317
318static void __init of_unittest_printf(void)
319{
320 struct device_node *np;
321 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
322 char phandle_str[16] = "";
323
324 np = of_find_node_by_path(full_name);
325 if (!np) {
326 unittest(np, "testcase data missing\n");
327 return;
328 }
329
330 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
331
332 of_unittest_printf_one(np, "%pOF", full_name);
333 of_unittest_printf_one(np, "%pOFf", full_name);
334 of_unittest_printf_one(np, "%pOFn", "dev");
335 of_unittest_printf_one(np, "%2pOFn", "dev");
336 of_unittest_printf_one(np, "%5pOFn", " dev");
337 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
338 of_unittest_printf_one(np, "%pOFp", phandle_str);
339 of_unittest_printf_one(np, "%pOFP", "dev@100");
340 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
341 of_unittest_printf_one(np, "%10pOFP", " dev@100");
342 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
343 of_unittest_printf_one(of_root, "%pOFP", "/");
344 of_unittest_printf_one(np, "%pOFF", "----");
345 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
346 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
347 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
348 of_unittest_printf_one(np, "%pOFC",
349 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
350}
351
352struct node_hash {
353 struct hlist_node node;
354 struct device_node *np;
355};
356
357static DEFINE_HASHTABLE(phandle_ht, 8);
358static void __init of_unittest_check_phandles(void)
359{
360 struct device_node *np;
361 struct node_hash *nh;
362 struct hlist_node *tmp;
363 int i, dup_count = 0, phandle_count = 0;
364
365 for_each_of_allnodes(np) {
366 if (!np->phandle)
367 continue;
368
369 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
370 if (nh->np->phandle == np->phandle) {
371 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
372 np->phandle, nh->np, np);
373 dup_count++;
374 break;
375 }
376 }
377
378 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
379 if (!nh)
380 return;
381
382 nh->np = np;
383 hash_add(phandle_ht, &nh->node, np->phandle);
384 phandle_count++;
385 }
386 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
387 dup_count, phandle_count);
388
389 /* Clean up */
390 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
391 hash_del(&nh->node);
392 kfree(nh);
393 }
394}
395
396static void __init of_unittest_parse_phandle_with_args(void)
397{
398 struct device_node *np;
399 struct of_phandle_args args;
400 int i, rc;
401
402 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
403 if (!np) {
404 pr_err("missing testcase data\n");
405 return;
406 }
407
408 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
409 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
410
411 for (i = 0; i < 8; i++) {
412 bool passed = true;
413
414 memset(&args, 0, sizeof(args));
415 rc = of_parse_phandle_with_args(np, "phandle-list",
416 "#phandle-cells", i, &args);
417
418 /* Test the values from tests-phandle.dtsi */
419 switch (i) {
420 case 0:
421 passed &= !rc;
422 passed &= (args.args_count == 1);
423 passed &= (args.args[0] == (i + 1));
424 break;
425 case 1:
426 passed &= !rc;
427 passed &= (args.args_count == 2);
428 passed &= (args.args[0] == (i + 1));
429 passed &= (args.args[1] == 0);
430 break;
431 case 2:
432 passed &= (rc == -ENOENT);
433 break;
434 case 3:
435 passed &= !rc;
436 passed &= (args.args_count == 3);
437 passed &= (args.args[0] == (i + 1));
438 passed &= (args.args[1] == 4);
439 passed &= (args.args[2] == 3);
440 break;
441 case 4:
442 passed &= !rc;
443 passed &= (args.args_count == 2);
444 passed &= (args.args[0] == (i + 1));
445 passed &= (args.args[1] == 100);
446 break;
447 case 5:
448 passed &= !rc;
449 passed &= (args.args_count == 0);
450 break;
451 case 6:
452 passed &= !rc;
453 passed &= (args.args_count == 1);
454 passed &= (args.args[0] == (i + 1));
455 break;
456 case 7:
457 passed &= (rc == -ENOENT);
458 break;
459 default:
460 passed = false;
461 }
462
463 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
464 i, args.np, rc);
465
466 if (rc == 0)
467 of_node_put(args.np);
468 }
469
470 /* Check for missing list property */
471 memset(&args, 0, sizeof(args));
472 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
473 "#phandle-cells", 0, &args);
474 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
475 rc = of_count_phandle_with_args(np, "phandle-list-missing",
476 "#phandle-cells");
477 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
478
479 /* Check for missing cells property */
480 memset(&args, 0, sizeof(args));
481
482 EXPECT_BEGIN(KERN_INFO,
483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
484
485 rc = of_parse_phandle_with_args(np, "phandle-list",
486 "#phandle-cells-missing", 0, &args);
487
488 EXPECT_END(KERN_INFO,
489 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
490
491 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
492
493 EXPECT_BEGIN(KERN_INFO,
494 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
495
496 rc = of_count_phandle_with_args(np, "phandle-list",
497 "#phandle-cells-missing");
498
499 EXPECT_END(KERN_INFO,
500 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
501
502 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
503
504 /* Check for bad phandle in list */
505 memset(&args, 0, sizeof(args));
506
507 EXPECT_BEGIN(KERN_INFO,
508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
509
510 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
511 "#phandle-cells", 0, &args);
512
513 EXPECT_END(KERN_INFO,
514 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
515
516 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
517
518 EXPECT_BEGIN(KERN_INFO,
519 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
520
521 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
522 "#phandle-cells");
523
524 EXPECT_END(KERN_INFO,
525 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
526
527 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
528
529 /* Check for incorrectly formed argument list */
530 memset(&args, 0, sizeof(args));
531
532 EXPECT_BEGIN(KERN_INFO,
533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
534
535 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
536 "#phandle-cells", 1, &args);
537
538 EXPECT_END(KERN_INFO,
539 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
540
541 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
542
543 EXPECT_BEGIN(KERN_INFO,
544 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
545
546 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
547 "#phandle-cells");
548
549 EXPECT_END(KERN_INFO,
550 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
551
552 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
553}
554
555static void __init of_unittest_parse_phandle_with_args_map(void)
556{
557 struct device_node *np, *p[6] = {};
558 struct of_phandle_args args;
559 unsigned int prefs[6];
560 int i, rc;
561
562 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
563 if (!np) {
564 pr_err("missing testcase data\n");
565 return;
566 }
567
568 p[0] = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
569 p[1] = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
570 p[2] = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
571 p[3] = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
572 p[4] = of_find_node_by_path("/testcase-data/phandle-tests/provider4");
573 p[5] = of_find_node_by_path("/testcase-data/phandle-tests/provider5");
574 for (i = 0; i < ARRAY_SIZE(p); ++i) {
575 if (!p[i]) {
576 pr_err("missing testcase data\n");
577 return;
578 }
579 prefs[i] = OF_KREF_READ(p[i]);
580 }
581
582 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
583 unittest(rc == 8, "of_count_phandle_with_args() returned %i, expected 8\n", rc);
584
585 for (i = 0; i < 9; i++) {
586 bool passed = true;
587
588 memset(&args, 0, sizeof(args));
589 rc = of_parse_phandle_with_args_map(np, "phandle-list",
590 "phandle", i, &args);
591
592 /* Test the values from tests-phandle.dtsi */
593 switch (i) {
594 case 0:
595 passed &= !rc;
596 passed &= (args.np == p[1]);
597 passed &= (args.args_count == 1);
598 passed &= (args.args[0] == 1);
599 break;
600 case 1:
601 passed &= !rc;
602 passed &= (args.np == p[3]);
603 passed &= (args.args_count == 3);
604 passed &= (args.args[0] == 2);
605 passed &= (args.args[1] == 5);
606 passed &= (args.args[2] == 3);
607 break;
608 case 2:
609 passed &= (rc == -ENOENT);
610 break;
611 case 3:
612 passed &= !rc;
613 passed &= (args.np == p[0]);
614 passed &= (args.args_count == 0);
615 break;
616 case 4:
617 passed &= !rc;
618 passed &= (args.np == p[1]);
619 passed &= (args.args_count == 1);
620 passed &= (args.args[0] == 3);
621 break;
622 case 5:
623 passed &= !rc;
624 passed &= (args.np == p[0]);
625 passed &= (args.args_count == 0);
626 break;
627 case 6:
628 passed &= !rc;
629 passed &= (args.np == p[2]);
630 passed &= (args.args_count == 2);
631 passed &= (args.args[0] == 15);
632 passed &= (args.args[1] == 0x20);
633 break;
634 case 7:
635 passed &= !rc;
636 passed &= (args.np == p[3]);
637 passed &= (args.args_count == 3);
638 passed &= (args.args[0] == 2);
639 passed &= (args.args[1] == 5);
640 passed &= (args.args[2] == 3);
641 break;
642 case 8:
643 passed &= (rc == -ENOENT);
644 break;
645 default:
646 passed = false;
647 }
648
649 unittest(passed, "index %i - data error on node %s rc=%i\n",
650 i, args.np->full_name, rc);
651
652 if (rc == 0)
653 of_node_put(args.np);
654 }
655
656 /* Check for missing list property */
657 memset(&args, 0, sizeof(args));
658 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
659 "phandle", 0, &args);
660 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
661
662 /* Check for missing cells,map,mask property */
663 memset(&args, 0, sizeof(args));
664
665 EXPECT_BEGIN(KERN_INFO,
666 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
667
668 rc = of_parse_phandle_with_args_map(np, "phandle-list",
669 "phandle-missing", 0, &args);
670 EXPECT_END(KERN_INFO,
671 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
672
673 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
674
675 /* Check for bad phandle in list */
676 memset(&args, 0, sizeof(args));
677
678 EXPECT_BEGIN(KERN_INFO,
679 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");
680
681 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
682 "phandle", 0, &args);
683 EXPECT_END(KERN_INFO,
684 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");
685
686 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
687
688 /* Check for incorrectly formed argument list */
689 memset(&args, 0, sizeof(args));
690
691 EXPECT_BEGIN(KERN_INFO,
692 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1");
693
694 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
695 "phandle", 1, &args);
696 EXPECT_END(KERN_INFO,
697 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1");
698
699 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
700
701 for (i = 0; i < ARRAY_SIZE(p); ++i) {
702 unittest(prefs[i] == OF_KREF_READ(p[i]),
703 "provider%d: expected:%d got:%d\n",
704 i, prefs[i], OF_KREF_READ(p[i]));
705 of_node_put(p[i]);
706 }
707}
708
709static void __init of_unittest_property_string(void)
710{
711 const char *strings[4];
712 struct device_node *np;
713 int rc;
714
715 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
716 if (!np) {
717 pr_err("No testcase data in device tree\n");
718 return;
719 }
720
721 rc = of_property_match_string(np, "phandle-list-names", "first");
722 unittest(rc == 0, "first expected:0 got:%i\n", rc);
723 rc = of_property_match_string(np, "phandle-list-names", "second");
724 unittest(rc == 1, "second expected:1 got:%i\n", rc);
725 rc = of_property_match_string(np, "phandle-list-names", "third");
726 unittest(rc == 2, "third expected:2 got:%i\n", rc);
727 rc = of_property_match_string(np, "phandle-list-names", "fourth");
728 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
729 rc = of_property_match_string(np, "missing-property", "blah");
730 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
731 rc = of_property_match_string(np, "empty-property", "blah");
732 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
733 rc = of_property_match_string(np, "unterminated-string", "blah");
734 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
735
736 /* of_property_count_strings() tests */
737 rc = of_property_count_strings(np, "string-property");
738 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
739 rc = of_property_count_strings(np, "phandle-list-names");
740 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
741 rc = of_property_count_strings(np, "unterminated-string");
742 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
743 rc = of_property_count_strings(np, "unterminated-string-list");
744 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
745
746 /* of_property_read_string_index() tests */
747 rc = of_property_read_string_index(np, "string-property", 0, strings);
748 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
749 strings[0] = NULL;
750 rc = of_property_read_string_index(np, "string-property", 1, strings);
751 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
752 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
753 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
754 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
755 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
756 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
757 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
758 strings[0] = NULL;
759 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
760 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
761 strings[0] = NULL;
762 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
763 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
764 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
765 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
766 strings[0] = NULL;
767 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
768 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
769 strings[1] = NULL;
770
771 /* of_property_read_string_array() tests */
772 rc = of_property_read_string_array(np, "string-property", strings, 4);
773 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
774 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
775 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
776 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
777 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
778 /* -- An incorrectly formed string should cause a failure */
779 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
780 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
781 /* -- parsing the correctly formed strings should still work: */
782 strings[2] = NULL;
783 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
784 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
785 strings[1] = NULL;
786 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
787 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
788}
789
790#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
791 (p1)->value && (p2)->value && \
792 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
793 !strcmp((p1)->name, (p2)->name))
794static void __init of_unittest_property_copy(void)
795{
796#ifdef CONFIG_OF_DYNAMIC
797 struct property p1 = { .name = "p1", .length = 0, .value = "" };
798 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
799 struct property *new;
800
801 new = __of_prop_dup(&p1, GFP_KERNEL);
802 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
803 kfree(new->value);
804 kfree(new->name);
805 kfree(new);
806
807 new = __of_prop_dup(&p2, GFP_KERNEL);
808 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
809 kfree(new->value);
810 kfree(new->name);
811 kfree(new);
812#endif
813}
814
815static void __init of_unittest_changeset(void)
816{
817#ifdef CONFIG_OF_DYNAMIC
818 int ret;
819 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
820 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
821 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
822 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
823 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
824 struct property *ppremove;
825 struct device_node *n1, *n2, *n21, *n22, *nchangeset, *nremove, *parent, *np;
826 static const char * const str_array[] = { "str1", "str2", "str3" };
827 const u32 u32_array[] = { 1, 2, 3 };
828 struct of_changeset chgset;
829 const char *propstr = NULL;
830
831 n1 = __of_node_dup(NULL, "n1");
832 unittest(n1, "testcase setup failure\n");
833
834 n2 = __of_node_dup(NULL, "n2");
835 unittest(n2, "testcase setup failure\n");
836
837 n21 = __of_node_dup(NULL, "n21");
838 unittest(n21, "testcase setup failure %p\n", n21);
839
840 nchangeset = of_find_node_by_path("/testcase-data/changeset");
841 nremove = of_get_child_by_name(nchangeset, "node-remove");
842 unittest(nremove, "testcase setup failure\n");
843
844 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
845 unittest(ppadd, "testcase setup failure\n");
846
847 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
848 unittest(ppname_n1, "testcase setup failure\n");
849
850 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
851 unittest(ppname_n2, "testcase setup failure\n");
852
853 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
854 unittest(ppname_n21, "testcase setup failure\n");
855
856 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
857 unittest(ppupdate, "testcase setup failure\n");
858
859 parent = nchangeset;
860 n1->parent = parent;
861 n2->parent = parent;
862 n21->parent = n2;
863
864 ppremove = of_find_property(parent, "prop-remove", NULL);
865 unittest(ppremove, "failed to find removal prop");
866
867 of_changeset_init(&chgset);
868
869 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
870 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
871
872 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
873 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
874
875 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
876 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
877
878 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
879
880 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
881 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
882 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
883 n22 = of_changeset_create_node(&chgset, n2, "n22");
884 unittest(n22, "fail create n22\n");
885 unittest(!of_changeset_add_prop_string(&chgset, n22, "prop-str", "abcd"),
886 "fail add prop prop-str");
887 unittest(!of_changeset_add_prop_string_array(&chgset, n22, "prop-str-array",
888 (const char **)str_array,
889 ARRAY_SIZE(str_array)),
890 "fail add prop prop-str-array");
891 unittest(!of_changeset_add_prop_u32_array(&chgset, n22, "prop-u32-array",
892 u32_array, ARRAY_SIZE(u32_array)),
893 "fail add prop prop-u32-array");
894
895 unittest(!of_changeset_apply(&chgset), "apply failed\n");
896
897 of_node_put(nchangeset);
898
899 /* Make sure node names are constructed correctly */
900 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
901 "'%pOF' not added\n", n21);
902 of_node_put(np);
903 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22")),
904 "'%pOF' not added\n", n22);
905 of_node_put(np);
906
907 unittest(!of_changeset_revert(&chgset), "revert failed\n");
908
909 unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21"),
910 "'%pOF' still present after revert\n", n21);
911
912 ppremove = of_find_property(parent, "prop-remove", NULL);
913 unittest(ppremove, "failed to find removed prop after revert\n");
914
915 ret = of_property_read_string(parent, "prop-update", &propstr);
916 unittest(!ret, "failed to find updated prop after revert\n");
917 if (!ret)
918 unittest(strcmp(propstr, "hello") == 0, "original value not in updated property after revert");
919
920 of_changeset_destroy(&chgset);
921
922 of_node_put(n1);
923 of_node_put(n2);
924 of_node_put(n21);
925 of_node_put(n22);
926#endif
927}
928
929static void __init of_unittest_dma_get_max_cpu_address(void)
930{
931 struct device_node *np;
932 phys_addr_t cpu_addr;
933
934 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
935 return;
936
937 np = of_find_node_by_path("/testcase-data/address-tests");
938 if (!np) {
939 pr_err("missing testcase data\n");
940 return;
941 }
942
943 cpu_addr = of_dma_get_max_cpu_address(np);
944 unittest(cpu_addr == 0x4fffffff,
945 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
946 &cpu_addr, 0x4fffffff);
947}
948
949static void __init of_unittest_dma_ranges_one(const char *path,
950 u64 expect_dma_addr, u64 expect_paddr)
951{
952#ifdef CONFIG_HAS_DMA
953 struct device_node *np;
954 const struct bus_dma_region *map = NULL;
955 int rc;
956
957 np = of_find_node_by_path(path);
958 if (!np) {
959 pr_err("missing testcase data\n");
960 return;
961 }
962
963 rc = of_dma_get_range(np, &map);
964
965 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
966
967 if (!rc) {
968 phys_addr_t paddr;
969 dma_addr_t dma_addr;
970 struct device *dev_bogus;
971
972 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL);
973 if (!dev_bogus) {
974 unittest(0, "kzalloc() failed\n");
975 kfree(map);
976 return;
977 }
978
979 dev_bogus->dma_range_map = map;
980 paddr = dma_to_phys(dev_bogus, expect_dma_addr);
981 dma_addr = phys_to_dma(dev_bogus, expect_paddr);
982
983 unittest(paddr == expect_paddr,
984 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
985 &paddr, expect_paddr, np);
986 unittest(dma_addr == expect_dma_addr,
987 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
988 &dma_addr, expect_dma_addr, np);
989
990 kfree(map);
991 kfree(dev_bogus);
992 }
993 of_node_put(np);
994#endif
995}
996
997static void __init of_unittest_parse_dma_ranges(void)
998{
999 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
1000 0x0, 0x20000000);
1001 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
1002 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
1003 0x100000000, 0x20000000);
1004 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
1005 0x80000000, 0x20000000);
1006}
1007
1008static void __init of_unittest_pci_dma_ranges(void)
1009{
1010 struct device_node *np;
1011 struct of_pci_range range;
1012 struct of_pci_range_parser parser;
1013 int i = 0;
1014
1015 if (!IS_ENABLED(CONFIG_PCI))
1016 return;
1017
1018 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
1019 if (!np) {
1020 pr_err("missing testcase data\n");
1021 return;
1022 }
1023
1024 if (of_pci_dma_range_parser_init(&parser, np)) {
1025 pr_err("missing dma-ranges property\n");
1026 return;
1027 }
1028
1029 /*
1030 * Get the dma-ranges from the device tree
1031 */
1032 for_each_of_pci_range(&parser, &range) {
1033 if (!i) {
1034 unittest(range.size == 0x10000000,
1035 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
1036 np, range.size);
1037 unittest(range.cpu_addr == 0x20000000,
1038 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
1039 range.cpu_addr, np);
1040 unittest(range.pci_addr == 0x80000000,
1041 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
1042 range.pci_addr, np);
1043 } else {
1044 unittest(range.size == 0x10000000,
1045 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
1046 np, range.size);
1047 unittest(range.cpu_addr == 0x40000000,
1048 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
1049 range.cpu_addr, np);
1050 unittest(range.pci_addr == 0xc0000000,
1051 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
1052 range.pci_addr, np);
1053 }
1054 i++;
1055 }
1056
1057 of_node_put(np);
1058}
1059
1060static void __init of_unittest_bus_ranges(void)
1061{
1062 struct device_node *np;
1063 struct of_range range;
1064 struct of_range_parser parser;
1065 struct resource res;
1066 int ret, count, i = 0;
1067
1068 np = of_find_node_by_path("/testcase-data/address-tests");
1069 if (!np) {
1070 pr_err("missing testcase data\n");
1071 return;
1072 }
1073
1074 if (of_range_parser_init(&parser, np)) {
1075 pr_err("missing ranges property\n");
1076 return;
1077 }
1078
1079 ret = of_range_to_resource(np, 1, &res);
1080 unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n",
1081 ret, np);
1082 unittest(resource_type(&res) == IORESOURCE_MEM,
1083 "of_range_to_resource wrong resource type on node %pOF res=%pR\n",
1084 np, &res);
1085 unittest(res.start == 0xd0000000,
1086 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1087 np, &res);
1088 unittest(resource_size(&res) == 0x20000000,
1089 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1090 np, &res);
1091
1092 count = of_range_count(&parser);
1093 unittest(count == 2,
1094 "of_range_count wrong size on node %pOF count=%d\n",
1095 np, count);
1096
1097 /*
1098 * Get the "ranges" from the device tree
1099 */
1100 for_each_of_range(&parser, &range) {
1101 unittest(range.flags == IORESOURCE_MEM,
1102 "for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n",
1103 np, range.flags, IORESOURCE_MEM);
1104 if (!i) {
1105 unittest(range.size == 0x50000000,
1106 "for_each_of_range wrong size on node %pOF size=%llx\n",
1107 np, range.size);
1108 unittest(range.cpu_addr == 0x70000000,
1109 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1110 range.cpu_addr, np);
1111 unittest(range.bus_addr == 0x70000000,
1112 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1113 range.pci_addr, np);
1114 } else {
1115 unittest(range.size == 0x20000000,
1116 "for_each_of_range wrong size on node %pOF size=%llx\n",
1117 np, range.size);
1118 unittest(range.cpu_addr == 0xd0000000,
1119 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1120 range.cpu_addr, np);
1121 unittest(range.bus_addr == 0x00000000,
1122 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1123 range.pci_addr, np);
1124 }
1125 i++;
1126 }
1127
1128 of_node_put(np);
1129}
1130
1131static void __init of_unittest_bus_3cell_ranges(void)
1132{
1133 struct device_node *np;
1134 struct of_range range;
1135 struct of_range_parser parser;
1136 int i = 0;
1137
1138 np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000");
1139 if (!np) {
1140 pr_err("missing testcase data\n");
1141 return;
1142 }
1143
1144 if (of_range_parser_init(&parser, np)) {
1145 pr_err("missing ranges property\n");
1146 return;
1147 }
1148
1149 /*
1150 * Get the "ranges" from the device tree
1151 */
1152 for_each_of_range(&parser, &range) {
1153 if (!i) {
1154 unittest(range.flags == 0xf00baa,
1155 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1156 np, range.flags);
1157 unittest(range.size == 0x100000,
1158 "for_each_of_range wrong size on node %pOF size=%llx\n",
1159 np, range.size);
1160 unittest(range.cpu_addr == 0xa0000000,
1161 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1162 range.cpu_addr, np);
1163 unittest(range.bus_addr == 0x0,
1164 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1165 range.pci_addr, np);
1166 } else {
1167 unittest(range.flags == 0xf00bee,
1168 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1169 np, range.flags);
1170 unittest(range.size == 0x200000,
1171 "for_each_of_range wrong size on node %pOF size=%llx\n",
1172 np, range.size);
1173 unittest(range.cpu_addr == 0xb0000000,
1174 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1175 range.cpu_addr, np);
1176 unittest(range.bus_addr == 0x100000000,
1177 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1178 range.pci_addr, np);
1179 }
1180 i++;
1181 }
1182
1183 of_node_put(np);
1184}
1185
1186static void __init of_unittest_reg(void)
1187{
1188 struct device_node *np;
1189 int ret;
1190 u64 addr, size;
1191
1192 np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000");
1193 if (!np) {
1194 pr_err("missing testcase data\n");
1195 return;
1196 }
1197
1198 ret = of_property_read_reg(np, 0, &addr, &size);
1199 unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n",
1200 np, ret);
1201 unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n",
1202 np, addr);
1203
1204 of_node_put(np);
1205}
1206
1207struct of_unittest_expected_res {
1208 int index;
1209 struct resource res;
1210};
1211
1212static void __init of_unittest_check_addr(const char *node_path,
1213 const struct of_unittest_expected_res *tab_exp,
1214 unsigned int tab_exp_count)
1215{
1216 const struct of_unittest_expected_res *expected;
1217 struct device_node *np;
1218 struct resource res;
1219 unsigned int count;
1220 int ret;
1221
1222 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
1223 return;
1224
1225 np = of_find_node_by_path(node_path);
1226 if (!np) {
1227 pr_err("missing testcase data (%s)\n", node_path);
1228 return;
1229 }
1230
1231 expected = tab_exp;
1232 count = tab_exp_count;
1233 while (count--) {
1234 ret = of_address_to_resource(np, expected->index, &res);
1235 unittest(!ret, "of_address_to_resource(%pOF, %d) returned error %d\n",
1236 np, expected->index, ret);
1237 unittest(resource_type(&res) == resource_type(&expected->res) &&
1238 res.start == expected->res.start &&
1239 resource_size(&res) == resource_size(&expected->res),
1240 "of_address_to_resource(%pOF, %d) wrong resource %pR, expected %pR\n",
1241 np, expected->index, &res, &expected->res);
1242 expected++;
1243 }
1244
1245 of_node_put(np);
1246}
1247
1248static const struct of_unittest_expected_res of_unittest_reg_2cell_expected_res[] = {
1249 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) },
1250 {.index = 1, .res = DEFINE_RES_MEM(0xa0a02000, 0x100) },
1251 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) },
1252 {.index = 3, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) },
1253};
1254
1255static const struct of_unittest_expected_res of_unittest_reg_3cell_expected_res[] = {
1256 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) },
1257 {.index = 1, .res = DEFINE_RES_MEM(0xa0b02000, 0x100) },
1258 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) },
1259 {.index = 3, .res = DEFINE_RES_MEM(0xc0c09000, 0x100) },
1260 {.index = 4, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) },
1261};
1262
1263static const struct of_unittest_expected_res of_unittest_reg_pci_expected_res[] = {
1264 {.index = 0, .res = DEFINE_RES_MEM(0xe8001000, 0x1000) },
1265 {.index = 1, .res = DEFINE_RES_MEM(0xea002000, 0x2000) },
1266};
1267
1268static void __init of_unittest_translate_addr(void)
1269{
1270 of_unittest_check_addr("/testcase-data/address-tests2/bus-2cell@10000000/device@100000",
1271 of_unittest_reg_2cell_expected_res,
1272 ARRAY_SIZE(of_unittest_reg_2cell_expected_res));
1273
1274 of_unittest_check_addr("/testcase-data/address-tests2/bus-3cell@20000000/local-bus@100000/device@f1001000",
1275 of_unittest_reg_3cell_expected_res,
1276 ARRAY_SIZE(of_unittest_reg_3cell_expected_res));
1277
1278 of_unittest_check_addr("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0/dev@e0000000",
1279 of_unittest_reg_pci_expected_res,
1280 ARRAY_SIZE(of_unittest_reg_pci_expected_res));
1281}
1282
1283static void __init of_unittest_parse_interrupts(void)
1284{
1285 struct device_node *np;
1286 struct of_phandle_args args;
1287 int i, rc;
1288
1289 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1290 return;
1291
1292 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1293 if (!np) {
1294 pr_err("missing testcase data\n");
1295 return;
1296 }
1297
1298 for (i = 0; i < 4; i++) {
1299 bool passed = true;
1300
1301 memset(&args, 0, sizeof(args));
1302 rc = of_irq_parse_one(np, i, &args);
1303
1304 passed &= !rc;
1305 passed &= (args.args_count == 1);
1306 passed &= (args.args[0] == (i + 1));
1307
1308 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1309 i, args.np, rc);
1310 }
1311 of_node_put(np);
1312
1313 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1314 if (!np) {
1315 pr_err("missing testcase data\n");
1316 return;
1317 }
1318
1319 for (i = 0; i < 4; i++) {
1320 bool passed = true;
1321
1322 memset(&args, 0, sizeof(args));
1323 rc = of_irq_parse_one(np, i, &args);
1324
1325 /* Test the values from tests-phandle.dtsi */
1326 switch (i) {
1327 case 0:
1328 passed &= !rc;
1329 passed &= (args.args_count == 1);
1330 passed &= (args.args[0] == 9);
1331 break;
1332 case 1:
1333 passed &= !rc;
1334 passed &= (args.args_count == 3);
1335 passed &= (args.args[0] == 10);
1336 passed &= (args.args[1] == 11);
1337 passed &= (args.args[2] == 12);
1338 break;
1339 case 2:
1340 passed &= !rc;
1341 passed &= (args.args_count == 2);
1342 passed &= (args.args[0] == 13);
1343 passed &= (args.args[1] == 14);
1344 break;
1345 case 3:
1346 passed &= !rc;
1347 passed &= (args.args_count == 2);
1348 passed &= (args.args[0] == 15);
1349 passed &= (args.args[1] == 16);
1350 break;
1351 default:
1352 passed = false;
1353 }
1354 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1355 i, args.np, rc);
1356 }
1357 of_node_put(np);
1358}
1359
1360static void __init of_unittest_parse_interrupts_extended(void)
1361{
1362 struct device_node *np;
1363 struct of_phandle_args args;
1364 int i, rc;
1365
1366 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1367 return;
1368
1369 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1370 if (!np) {
1371 pr_err("missing testcase data\n");
1372 return;
1373 }
1374
1375 for (i = 0; i < 7; i++) {
1376 bool passed = true;
1377
1378 memset(&args, 0, sizeof(args));
1379 rc = of_irq_parse_one(np, i, &args);
1380
1381 /* Test the values from tests-phandle.dtsi */
1382 switch (i) {
1383 case 0:
1384 passed &= !rc;
1385 passed &= (args.args_count == 1);
1386 passed &= (args.args[0] == 1);
1387 break;
1388 case 1:
1389 passed &= !rc;
1390 passed &= (args.args_count == 3);
1391 passed &= (args.args[0] == 2);
1392 passed &= (args.args[1] == 3);
1393 passed &= (args.args[2] == 4);
1394 break;
1395 case 2:
1396 passed &= !rc;
1397 passed &= (args.args_count == 2);
1398 passed &= (args.args[0] == 5);
1399 passed &= (args.args[1] == 6);
1400 break;
1401 case 3:
1402 passed &= !rc;
1403 passed &= (args.args_count == 1);
1404 passed &= (args.args[0] == 9);
1405 break;
1406 case 4:
1407 passed &= !rc;
1408 passed &= (args.args_count == 3);
1409 passed &= (args.args[0] == 10);
1410 passed &= (args.args[1] == 11);
1411 passed &= (args.args[2] == 12);
1412 break;
1413 case 5:
1414 passed &= !rc;
1415 passed &= (args.args_count == 2);
1416 passed &= (args.args[0] == 13);
1417 passed &= (args.args[1] == 14);
1418 break;
1419 case 6:
1420 /*
1421 * Tests child node that is missing property
1422 * #address-cells. See the comments in
1423 * drivers/of/unittest-data/tests-interrupts.dtsi
1424 * nodes intmap1 and interrupts-extended0
1425 */
1426 passed &= !rc;
1427 passed &= (args.args_count == 1);
1428 passed &= (args.args[0] == 15);
1429 break;
1430 default:
1431 passed = false;
1432 }
1433
1434 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1435 i, args.np, rc);
1436 }
1437 of_node_put(np);
1438}
1439
1440static const struct of_device_id match_node_table[] = {
1441 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1442 { .data = "B", .type = "type1", }, /* followed by type alone */
1443
1444 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1445 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1446 { .data = "Cc", .name = "name2", .type = "type2", },
1447
1448 { .data = "E", .compatible = "compat3" },
1449 { .data = "G", .compatible = "compat2", },
1450 { .data = "H", .compatible = "compat2", .name = "name5", },
1451 { .data = "I", .compatible = "compat2", .type = "type1", },
1452 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1453 { .data = "K", .compatible = "compat2", .name = "name9", },
1454 {}
1455};
1456
1457static struct {
1458 const char *path;
1459 const char *data;
1460} match_node_tests[] = {
1461 { .path = "/testcase-data/match-node/name0", .data = "A", },
1462 { .path = "/testcase-data/match-node/name1", .data = "B", },
1463 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1464 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1465 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1466 { .path = "/testcase-data/match-node/name3", .data = "E", },
1467 { .path = "/testcase-data/match-node/name4", .data = "G", },
1468 { .path = "/testcase-data/match-node/name5", .data = "H", },
1469 { .path = "/testcase-data/match-node/name6", .data = "G", },
1470 { .path = "/testcase-data/match-node/name7", .data = "I", },
1471 { .path = "/testcase-data/match-node/name8", .data = "J", },
1472 { .path = "/testcase-data/match-node/name9", .data = "K", },
1473};
1474
1475static void __init of_unittest_match_node(void)
1476{
1477 struct device_node *np;
1478 const struct of_device_id *match;
1479 int i;
1480
1481 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1482 np = of_find_node_by_path(match_node_tests[i].path);
1483 if (!np) {
1484 unittest(0, "missing testcase node %s\n",
1485 match_node_tests[i].path);
1486 continue;
1487 }
1488
1489 match = of_match_node(match_node_table, np);
1490 if (!match) {
1491 unittest(0, "%s didn't match anything\n",
1492 match_node_tests[i].path);
1493 continue;
1494 }
1495
1496 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1497 unittest(0, "%s got wrong match. expected %s, got %s\n",
1498 match_node_tests[i].path, match_node_tests[i].data,
1499 (const char *)match->data);
1500 continue;
1501 }
1502 unittest(1, "passed");
1503 }
1504}
1505
1506static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2);
1507static const struct platform_device_info test_bus_info = {
1508 .name = "unittest-bus",
1509};
1510static void __init of_unittest_platform_populate(void)
1511{
1512 int irq, rc;
1513 struct device_node *np, *child, *grandchild;
1514 struct platform_device *pdev, *test_bus;
1515 const struct of_device_id match[] = {
1516 { .compatible = "test-device", },
1517 {}
1518 };
1519
1520 np = of_find_node_by_path("/testcase-data");
1521 of_platform_default_populate(np, NULL, NULL);
1522
1523 /* Test that a missing irq domain returns -EPROBE_DEFER */
1524 np = of_find_node_by_path("/testcase-data/testcase-device1");
1525 pdev = of_find_device_by_node(np);
1526 unittest(pdev, "device 1 creation failed\n");
1527
1528 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1529 irq = platform_get_irq(pdev, 0);
1530 unittest(irq == -EPROBE_DEFER,
1531 "device deferred probe failed - %d\n", irq);
1532
1533 /* Test that a parsing failure does not return -EPROBE_DEFER */
1534 np = of_find_node_by_path("/testcase-data/testcase-device2");
1535 pdev = of_find_device_by_node(np);
1536 unittest(pdev, "device 2 creation failed\n");
1537
1538 EXPECT_BEGIN(KERN_INFO,
1539 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1540
1541 irq = platform_get_irq(pdev, 0);
1542
1543 EXPECT_END(KERN_INFO,
1544 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1545
1546 unittest(irq < 0 && irq != -EPROBE_DEFER,
1547 "device parsing error failed - %d\n", irq);
1548 }
1549
1550 np = of_find_node_by_path("/testcase-data/platform-tests");
1551 unittest(np, "No testcase data in device tree\n");
1552 if (!np)
1553 return;
1554
1555 test_bus = platform_device_register_full(&test_bus_info);
1556 rc = PTR_ERR_OR_ZERO(test_bus);
1557 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1558 if (rc) {
1559 of_node_put(np);
1560 return;
1561 }
1562 test_bus->dev.of_node = np;
1563
1564 /*
1565 * Add a dummy resource to the test bus node after it is
1566 * registered to catch problems with un-inserted resources. The
1567 * DT code doesn't insert the resources, and it has caused the
1568 * kernel to oops in the past. This makes sure the same bug
1569 * doesn't crop up again.
1570 */
1571 platform_device_add_resources(test_bus, &test_bus_res, 1);
1572
1573 of_platform_populate(np, match, NULL, &test_bus->dev);
1574 for_each_child_of_node(np, child) {
1575 for_each_child_of_node(child, grandchild) {
1576 pdev = of_find_device_by_node(grandchild);
1577 unittest(pdev,
1578 "Could not create device for node '%pOFn'\n",
1579 grandchild);
1580 platform_device_put(pdev);
1581 }
1582 }
1583
1584 of_platform_depopulate(&test_bus->dev);
1585 for_each_child_of_node(np, child) {
1586 for_each_child_of_node(child, grandchild)
1587 unittest(!of_find_device_by_node(grandchild),
1588 "device didn't get destroyed '%pOFn'\n",
1589 grandchild);
1590 }
1591
1592 platform_device_unregister(test_bus);
1593 of_node_put(np);
1594}
1595
1596/**
1597 * update_node_properties - adds the properties
1598 * of np into dup node (present in live tree) and
1599 * updates parent of children of np to dup.
1600 *
1601 * @np: node whose properties are being added to the live tree
1602 * @dup: node present in live tree to be updated
1603 */
1604static void update_node_properties(struct device_node *np,
1605 struct device_node *dup)
1606{
1607 struct property *prop;
1608 struct property *save_next;
1609 struct device_node *child;
1610 int ret;
1611
1612 for_each_child_of_node(np, child)
1613 child->parent = dup;
1614
1615 /*
1616 * "unittest internal error: unable to add testdata property"
1617 *
1618 * If this message reports a property in node '/__symbols__' then
1619 * the respective unittest overlay contains a label that has the
1620 * same name as a label in the live devicetree. The label will
1621 * be in the live devicetree only if the devicetree source was
1622 * compiled with the '-@' option. If you encounter this error,
1623 * please consider renaming __all__ of the labels in the unittest
1624 * overlay dts files with an odd prefix that is unlikely to be
1625 * used in a real devicetree.
1626 */
1627
1628 /*
1629 * open code for_each_property_of_node() because of_add_property()
1630 * sets prop->next to NULL
1631 */
1632 for (prop = np->properties; prop != NULL; prop = save_next) {
1633 save_next = prop->next;
1634 ret = of_add_property(dup, prop);
1635 if (ret) {
1636 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1637 continue;
1638 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1639 np, prop->name);
1640 }
1641 }
1642}
1643
1644/**
1645 * attach_node_and_children - attaches nodes
1646 * and its children to live tree.
1647 * CAUTION: misleading function name - if node @np already exists in
1648 * the live tree then children of @np are *not* attached to the live
1649 * tree. This works for the current test devicetree nodes because such
1650 * nodes do not have child nodes.
1651 *
1652 * @np: Node to attach to live tree
1653 */
1654static void attach_node_and_children(struct device_node *np)
1655{
1656 struct device_node *next, *dup, *child;
1657 unsigned long flags;
1658 const char *full_name;
1659
1660 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1661 if (!full_name)
1662 return;
1663
1664 if (!strcmp(full_name, "/__local_fixups__") ||
1665 !strcmp(full_name, "/__fixups__")) {
1666 kfree(full_name);
1667 return;
1668 }
1669
1670 dup = of_find_node_by_path(full_name);
1671 kfree(full_name);
1672 if (dup) {
1673 update_node_properties(np, dup);
1674 return;
1675 }
1676
1677 child = np->child;
1678 np->child = NULL;
1679
1680 mutex_lock(&of_mutex);
1681 raw_spin_lock_irqsave(&devtree_lock, flags);
1682 np->sibling = np->parent->child;
1683 np->parent->child = np;
1684 of_node_clear_flag(np, OF_DETACHED);
1685 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1686
1687 __of_attach_node_sysfs(np);
1688 mutex_unlock(&of_mutex);
1689
1690 while (child) {
1691 next = child->sibling;
1692 attach_node_and_children(child);
1693 child = next;
1694 }
1695}
1696
1697/**
1698 * unittest_data_add - Reads, copies data from
1699 * linked tree and attaches it to the live tree
1700 */
1701static int __init unittest_data_add(void)
1702{
1703 void *unittest_data;
1704 void *unittest_data_align;
1705 struct device_node *unittest_data_node = NULL, *np;
1706 /*
1707 * __dtbo_testcases_begin[] and __dtbo_testcases_end[] are magically
1708 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
1709 */
1710 extern uint8_t __dtbo_testcases_begin[];
1711 extern uint8_t __dtbo_testcases_end[];
1712 const int size = __dtbo_testcases_end - __dtbo_testcases_begin;
1713 int rc;
1714 void *ret;
1715
1716 if (!size) {
1717 pr_warn("%s: testcases is empty\n", __func__);
1718 return -ENODATA;
1719 }
1720
1721 /* creating copy */
1722 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1723 if (!unittest_data)
1724 return -ENOMEM;
1725
1726 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1727 memcpy(unittest_data_align, __dtbo_testcases_begin, size);
1728
1729 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1730 if (!ret) {
1731 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1732 kfree(unittest_data);
1733 return -ENODATA;
1734 }
1735 if (!unittest_data_node) {
1736 pr_warn("%s: testcases tree is empty\n", __func__);
1737 kfree(unittest_data);
1738 return -ENODATA;
1739 }
1740
1741 /*
1742 * This lock normally encloses of_resolve_phandles()
1743 */
1744 of_overlay_mutex_lock();
1745
1746 rc = of_resolve_phandles(unittest_data_node);
1747 if (rc) {
1748 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1749 of_overlay_mutex_unlock();
1750 return -EINVAL;
1751 }
1752
1753 if (!of_root) {
1754 of_root = unittest_data_node;
1755 for_each_of_allnodes(np)
1756 __of_attach_node_sysfs(np);
1757 of_aliases = of_find_node_by_path("/aliases");
1758 of_chosen = of_find_node_by_path("/chosen");
1759 of_overlay_mutex_unlock();
1760 return 0;
1761 }
1762
1763 EXPECT_BEGIN(KERN_INFO,
1764 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1765
1766 /* attach the sub-tree to live tree */
1767 np = unittest_data_node->child;
1768 while (np) {
1769 struct device_node *next = np->sibling;
1770
1771 np->parent = of_root;
1772 /* this will clear OF_DETACHED in np and children */
1773 attach_node_and_children(np);
1774 np = next;
1775 }
1776
1777 EXPECT_END(KERN_INFO,
1778 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1779
1780 of_overlay_mutex_unlock();
1781
1782 return 0;
1783}
1784
1785#ifdef CONFIG_OF_OVERLAY
1786static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id);
1787
1788static int unittest_probe(struct platform_device *pdev)
1789{
1790 struct device *dev = &pdev->dev;
1791 struct device_node *np = dev->of_node;
1792
1793 if (np == NULL) {
1794 dev_err(dev, "No OF data for device\n");
1795 return -EINVAL;
1796
1797 }
1798
1799 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1800
1801 of_platform_populate(np, NULL, NULL, &pdev->dev);
1802
1803 return 0;
1804}
1805
1806static void unittest_remove(struct platform_device *pdev)
1807{
1808 struct device *dev = &pdev->dev;
1809 struct device_node *np = dev->of_node;
1810
1811 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1812}
1813
1814static const struct of_device_id unittest_match[] = {
1815 { .compatible = "unittest", },
1816 {},
1817};
1818
1819static struct platform_driver unittest_driver = {
1820 .probe = unittest_probe,
1821 .remove_new = unittest_remove,
1822 .driver = {
1823 .name = "unittest",
1824 .of_match_table = unittest_match,
1825 },
1826};
1827
1828/* get the platform device instantiated at the path */
1829static struct platform_device *of_path_to_platform_device(const char *path)
1830{
1831 struct device_node *np;
1832 struct platform_device *pdev;
1833
1834 np = of_find_node_by_path(path);
1835 if (np == NULL)
1836 return NULL;
1837
1838 pdev = of_find_device_by_node(np);
1839 of_node_put(np);
1840
1841 return pdev;
1842}
1843
1844/* find out if a platform device exists at that path */
1845static int of_path_platform_device_exists(const char *path)
1846{
1847 struct platform_device *pdev;
1848
1849 pdev = of_path_to_platform_device(path);
1850 platform_device_put(pdev);
1851 return pdev != NULL;
1852}
1853
1854#ifdef CONFIG_OF_GPIO
1855
1856struct unittest_gpio_dev {
1857 struct gpio_chip chip;
1858};
1859
1860static int unittest_gpio_chip_request_count;
1861static int unittest_gpio_probe_count;
1862static int unittest_gpio_probe_pass_count;
1863
1864static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1865{
1866 unittest_gpio_chip_request_count++;
1867
1868 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1869 unittest_gpio_chip_request_count);
1870 return 0;
1871}
1872
1873static int unittest_gpio_probe(struct platform_device *pdev)
1874{
1875 struct unittest_gpio_dev *devptr;
1876 int ret;
1877
1878 unittest_gpio_probe_count++;
1879
1880 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1881 if (!devptr)
1882 return -ENOMEM;
1883
1884 platform_set_drvdata(pdev, devptr);
1885
1886 devptr->chip.fwnode = dev_fwnode(&pdev->dev);
1887 devptr->chip.label = "of-unittest-gpio";
1888 devptr->chip.base = -1; /* dynamic allocation */
1889 devptr->chip.ngpio = 5;
1890 devptr->chip.request = unittest_gpio_chip_request;
1891
1892 ret = gpiochip_add_data(&devptr->chip, NULL);
1893
1894 unittest(!ret,
1895 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret);
1896
1897 if (!ret)
1898 unittest_gpio_probe_pass_count++;
1899 return ret;
1900}
1901
1902static void unittest_gpio_remove(struct platform_device *pdev)
1903{
1904 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev);
1905 struct device *dev = &pdev->dev;
1906
1907 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode);
1908
1909 if (devptr->chip.base != -1)
1910 gpiochip_remove(&devptr->chip);
1911
1912 kfree(devptr);
1913}
1914
1915static const struct of_device_id unittest_gpio_id[] = {
1916 { .compatible = "unittest-gpio", },
1917 {}
1918};
1919
1920static struct platform_driver unittest_gpio_driver = {
1921 .probe = unittest_gpio_probe,
1922 .remove_new = unittest_gpio_remove,
1923 .driver = {
1924 .name = "unittest-gpio",
1925 .of_match_table = unittest_gpio_id,
1926 },
1927};
1928
1929static void __init of_unittest_overlay_gpio(void)
1930{
1931 int chip_request_count;
1932 int probe_pass_count;
1933 int ret;
1934
1935 /*
1936 * tests: apply overlays before registering driver
1937 * Similar to installing a driver as a module, the
1938 * driver is registered after applying the overlays.
1939 *
1940 * The overlays are applied by overlay_data_apply()
1941 * instead of of_unittest_apply_overlay() so that they
1942 * will not be tracked. Thus they will not be removed
1943 * by of_unittest_remove_tracked_overlays().
1944 *
1945 * - apply overlay_gpio_01
1946 * - apply overlay_gpio_02a
1947 * - apply overlay_gpio_02b
1948 * - register driver
1949 *
1950 * register driver will result in
1951 * - probe and processing gpio hog for overlay_gpio_01
1952 * - probe for overlay_gpio_02a
1953 * - processing gpio for overlay_gpio_02b
1954 */
1955
1956 probe_pass_count = unittest_gpio_probe_pass_count;
1957 chip_request_count = unittest_gpio_chip_request_count;
1958
1959 /*
1960 * overlay_gpio_01 contains gpio node and child gpio hog node
1961 * overlay_gpio_02a contains gpio node
1962 * overlay_gpio_02b contains child gpio hog node
1963 */
1964
1965 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1966 "Adding overlay 'overlay_gpio_01' failed\n");
1967
1968 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1969 "Adding overlay 'overlay_gpio_02a' failed\n");
1970
1971 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1972 "Adding overlay 'overlay_gpio_02b' failed\n");
1973
1974 ret = platform_driver_register(&unittest_gpio_driver);
1975 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1976 return;
1977
1978 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1979 "unittest_gpio_probe() failed or not called\n");
1980
1981 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1982 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1983 unittest_gpio_chip_request_count - chip_request_count);
1984
1985 /*
1986 * tests: apply overlays after registering driver
1987 *
1988 * Similar to a driver built-in to the kernel, the
1989 * driver is registered before applying the overlays.
1990 *
1991 * overlay_gpio_03 contains gpio node and child gpio hog node
1992 *
1993 * - apply overlay_gpio_03
1994 *
1995 * apply overlay will result in
1996 * - probe and processing gpio hog.
1997 */
1998
1999 probe_pass_count = unittest_gpio_probe_pass_count;
2000 chip_request_count = unittest_gpio_chip_request_count;
2001
2002 /* overlay_gpio_03 contains gpio node and child gpio hog node */
2003
2004 unittest(overlay_data_apply("overlay_gpio_03", NULL),
2005 "Adding overlay 'overlay_gpio_03' failed\n");
2006
2007 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
2008 "unittest_gpio_probe() failed or not called\n");
2009
2010 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
2011 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
2012 unittest_gpio_chip_request_count - chip_request_count);
2013
2014 /*
2015 * overlay_gpio_04a contains gpio node
2016 *
2017 * - apply overlay_gpio_04a
2018 *
2019 * apply the overlay will result in
2020 * - probe for overlay_gpio_04a
2021 */
2022
2023 probe_pass_count = unittest_gpio_probe_pass_count;
2024 chip_request_count = unittest_gpio_chip_request_count;
2025
2026 /* overlay_gpio_04a contains gpio node */
2027
2028 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
2029 "Adding overlay 'overlay_gpio_04a' failed\n");
2030
2031 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
2032 "unittest_gpio_probe() failed or not called\n");
2033
2034 /*
2035 * overlay_gpio_04b contains child gpio hog node
2036 *
2037 * - apply overlay_gpio_04b
2038 *
2039 * apply the overlay will result in
2040 * - processing gpio for overlay_gpio_04b
2041 */
2042
2043 /* overlay_gpio_04b contains child gpio hog node */
2044
2045 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
2046 "Adding overlay 'overlay_gpio_04b' failed\n");
2047
2048 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
2049 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
2050 unittest_gpio_chip_request_count - chip_request_count);
2051}
2052
2053#else
2054
2055static void __init of_unittest_overlay_gpio(void)
2056{
2057 /* skip tests */
2058}
2059
2060#endif
2061
2062#if IS_BUILTIN(CONFIG_I2C)
2063
2064/* get the i2c client device instantiated at the path */
2065static struct i2c_client *of_path_to_i2c_client(const char *path)
2066{
2067 struct device_node *np;
2068 struct i2c_client *client;
2069
2070 np = of_find_node_by_path(path);
2071 if (np == NULL)
2072 return NULL;
2073
2074 client = of_find_i2c_device_by_node(np);
2075 of_node_put(np);
2076
2077 return client;
2078}
2079
2080/* find out if a i2c client device exists at that path */
2081static int of_path_i2c_client_exists(const char *path)
2082{
2083 struct i2c_client *client;
2084
2085 client = of_path_to_i2c_client(path);
2086 if (client)
2087 put_device(&client->dev);
2088 return client != NULL;
2089}
2090#else
2091static int of_path_i2c_client_exists(const char *path)
2092{
2093 return 0;
2094}
2095#endif
2096
2097enum overlay_type {
2098 PDEV_OVERLAY,
2099 I2C_OVERLAY
2100};
2101
2102static int of_path_device_type_exists(const char *path,
2103 enum overlay_type ovtype)
2104{
2105 switch (ovtype) {
2106 case PDEV_OVERLAY:
2107 return of_path_platform_device_exists(path);
2108 case I2C_OVERLAY:
2109 return of_path_i2c_client_exists(path);
2110 }
2111 return 0;
2112}
2113
2114static const char *unittest_path(int nr, enum overlay_type ovtype)
2115{
2116 const char *base;
2117 static char buf[256];
2118
2119 switch (ovtype) {
2120 case PDEV_OVERLAY:
2121 base = "/testcase-data/overlay-node/test-bus";
2122 break;
2123 case I2C_OVERLAY:
2124 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
2125 break;
2126 default:
2127 buf[0] = '\0';
2128 return buf;
2129 }
2130 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
2131 buf[sizeof(buf) - 1] = '\0';
2132 return buf;
2133}
2134
2135static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
2136{
2137 const char *path;
2138
2139 path = unittest_path(unittest_nr, ovtype);
2140
2141 switch (ovtype) {
2142 case PDEV_OVERLAY:
2143 return of_path_platform_device_exists(path);
2144 case I2C_OVERLAY:
2145 return of_path_i2c_client_exists(path);
2146 }
2147 return 0;
2148}
2149
2150static const char *overlay_name_from_nr(int nr)
2151{
2152 static char buf[256];
2153
2154 snprintf(buf, sizeof(buf) - 1,
2155 "overlay_%d", nr);
2156 buf[sizeof(buf) - 1] = '\0';
2157
2158 return buf;
2159}
2160
2161static const char *bus_path = "/testcase-data/overlay-node/test-bus";
2162
2163#define MAX_TRACK_OVCS_IDS 256
2164
2165static int track_ovcs_id[MAX_TRACK_OVCS_IDS];
2166static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS];
2167static int track_ovcs_id_cnt;
2168
2169static void of_unittest_track_overlay(int ovcs_id, int overlay_nr)
2170{
2171 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS))
2172 return;
2173
2174 track_ovcs_id[track_ovcs_id_cnt] = ovcs_id;
2175 track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr;
2176 track_ovcs_id_cnt++;
2177}
2178
2179static void of_unittest_untrack_overlay(int ovcs_id)
2180{
2181 if (WARN_ON(track_ovcs_id_cnt < 1))
2182 return;
2183
2184 track_ovcs_id_cnt--;
2185
2186 /* If out of synch then test is broken. Do not try to recover. */
2187 WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id);
2188}
2189
2190static void of_unittest_remove_tracked_overlays(void)
2191{
2192 int ret, ovcs_id, overlay_nr, save_ovcs_id;
2193 const char *overlay_name;
2194
2195 while (track_ovcs_id_cnt > 0) {
2196
2197 ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1];
2198 overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1];
2199 save_ovcs_id = ovcs_id;
2200 ret = of_overlay_remove(&ovcs_id);
2201 if (ret == -ENODEV) {
2202 overlay_name = overlay_name_from_nr(overlay_nr);
2203 pr_warn("%s: of_overlay_remove() for overlay \"%s\" failed, ret = %d\n",
2204 __func__, overlay_name, ret);
2205 }
2206 of_unittest_untrack_overlay(save_ovcs_id);
2207 }
2208
2209}
2210
2211static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id)
2212{
2213 /*
2214 * The overlay will be tracked, thus it will be removed
2215 * by of_unittest_remove_tracked_overlays().
2216 */
2217
2218 const char *overlay_name;
2219
2220 overlay_name = overlay_name_from_nr(overlay_nr);
2221
2222 if (!overlay_data_apply(overlay_name, ovcs_id)) {
2223 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2224 return -EFAULT;
2225 }
2226 of_unittest_track_overlay(*ovcs_id, overlay_nr);
2227
2228 return 0;
2229}
2230
2231static int __init __of_unittest_apply_overlay_check(int overlay_nr,
2232 int unittest_nr, int before, int after,
2233 enum overlay_type ovtype)
2234{
2235 int ret, ovcs_id;
2236
2237 /* unittest device must be in before state */
2238 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2239 unittest(0, "%s with device @\"%s\" %s\n",
2240 overlay_name_from_nr(overlay_nr),
2241 unittest_path(unittest_nr, ovtype),
2242 !before ? "enabled" : "disabled");
2243 return -EINVAL;
2244 }
2245
2246 /* apply the overlay */
2247 ovcs_id = 0;
2248 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2249 if (ret != 0) {
2250 /* of_unittest_apply_overlay already called unittest() */
2251 return ret;
2252 }
2253
2254 /* unittest device must be in after state */
2255 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2256 unittest(0, "%s with device @\"%s\" %s\n",
2257 overlay_name_from_nr(overlay_nr),
2258 unittest_path(unittest_nr, ovtype),
2259 !after ? "enabled" : "disabled");
2260 return -EINVAL;
2261 }
2262
2263 return ovcs_id;
2264}
2265
2266/* apply an overlay while checking before and after states */
2267static int __init of_unittest_apply_overlay_check(int overlay_nr,
2268 int unittest_nr, int before, int after,
2269 enum overlay_type ovtype)
2270{
2271 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr,
2272 unittest_nr, before, after, ovtype);
2273 if (ovcs_id < 0)
2274 return ovcs_id;
2275
2276 return 0;
2277}
2278
2279/* apply an overlay and then revert it while checking before, after states */
2280static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2281 int unittest_nr, int before, int after,
2282 enum overlay_type ovtype)
2283{
2284 int ret, ovcs_id, save_ovcs_id;
2285
2286 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr,
2287 before, after, ovtype);
2288 if (ovcs_id < 0)
2289 return ovcs_id;
2290
2291 /* remove the overlay */
2292 save_ovcs_id = ovcs_id;
2293 ret = of_overlay_remove(&ovcs_id);
2294 if (ret != 0) {
2295 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2296 overlay_name_from_nr(overlay_nr),
2297 unittest_path(unittest_nr, ovtype));
2298 return ret;
2299 }
2300 of_unittest_untrack_overlay(save_ovcs_id);
2301
2302 /* unittest device must be again in before state */
2303 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2304 unittest(0, "%s with device @\"%s\" %s\n",
2305 overlay_name_from_nr(overlay_nr),
2306 unittest_path(unittest_nr, ovtype),
2307 !before ? "enabled" : "disabled");
2308 return -EINVAL;
2309 }
2310
2311 return 0;
2312}
2313
2314/* test activation of device */
2315static void __init of_unittest_overlay_0(void)
2316{
2317 int ret;
2318
2319 EXPECT_BEGIN(KERN_INFO,
2320 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2321
2322 /* device should enable */
2323 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2324
2325 EXPECT_END(KERN_INFO,
2326 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2327
2328 if (ret)
2329 return;
2330
2331 unittest(1, "overlay test %d passed\n", 0);
2332}
2333
2334/* test deactivation of device */
2335static void __init of_unittest_overlay_1(void)
2336{
2337 int ret;
2338
2339 EXPECT_BEGIN(KERN_INFO,
2340 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2341
2342 /* device should disable */
2343 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2344
2345 EXPECT_END(KERN_INFO,
2346 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2347
2348 if (ret)
2349 return;
2350
2351 unittest(1, "overlay test %d passed\n", 1);
2352
2353}
2354
2355/* test activation of device */
2356static void __init of_unittest_overlay_2(void)
2357{
2358 int ret;
2359
2360 EXPECT_BEGIN(KERN_INFO,
2361 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2362
2363 /* device should enable */
2364 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2365
2366 EXPECT_END(KERN_INFO,
2367 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2368
2369 if (ret)
2370 return;
2371 unittest(1, "overlay test %d passed\n", 2);
2372}
2373
2374/* test deactivation of device */
2375static void __init of_unittest_overlay_3(void)
2376{
2377 int ret;
2378
2379 EXPECT_BEGIN(KERN_INFO,
2380 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2381
2382 /* device should disable */
2383 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2384
2385 EXPECT_END(KERN_INFO,
2386 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2387
2388 if (ret)
2389 return;
2390
2391 unittest(1, "overlay test %d passed\n", 3);
2392}
2393
2394/* test activation of a full device node */
2395static void __init of_unittest_overlay_4(void)
2396{
2397 /* device should disable */
2398 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2399 return;
2400
2401 unittest(1, "overlay test %d passed\n", 4);
2402}
2403
2404/* test overlay apply/revert sequence */
2405static void __init of_unittest_overlay_5(void)
2406{
2407 int ret;
2408
2409 EXPECT_BEGIN(KERN_INFO,
2410 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2411
2412 /* device should disable */
2413 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2414
2415 EXPECT_END(KERN_INFO,
2416 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2417
2418 if (ret)
2419 return;
2420
2421 unittest(1, "overlay test %d passed\n", 5);
2422}
2423
2424/* test overlay application in sequence */
2425static void __init of_unittest_overlay_6(void)
2426{
2427 int i, save_ovcs_id[2], ovcs_id;
2428 int overlay_nr = 6, unittest_nr = 6;
2429 int before = 0, after = 1;
2430 const char *overlay_name;
2431
2432 int ret;
2433
2434 /* unittest device must be in before state */
2435 for (i = 0; i < 2; i++) {
2436 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2437 != before) {
2438 unittest(0, "%s with device @\"%s\" %s\n",
2439 overlay_name_from_nr(overlay_nr + i),
2440 unittest_path(unittest_nr + i,
2441 PDEV_OVERLAY),
2442 !before ? "enabled" : "disabled");
2443 return;
2444 }
2445 }
2446
2447 /* apply the overlays */
2448
2449 EXPECT_BEGIN(KERN_INFO,
2450 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2451
2452 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2453
2454 ret = overlay_data_apply(overlay_name, &ovcs_id);
2455
2456 if (!ret) {
2457 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2458 return;
2459 }
2460 save_ovcs_id[0] = ovcs_id;
2461 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
2462
2463 EXPECT_END(KERN_INFO,
2464 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2465
2466 EXPECT_BEGIN(KERN_INFO,
2467 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2468
2469 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2470
2471 ret = overlay_data_apply(overlay_name, &ovcs_id);
2472
2473 if (!ret) {
2474 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2475 return;
2476 }
2477 save_ovcs_id[1] = ovcs_id;
2478 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
2479
2480 EXPECT_END(KERN_INFO,
2481 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2482
2483
2484 for (i = 0; i < 2; i++) {
2485 /* unittest device must be in after state */
2486 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2487 != after) {
2488 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2489 overlay_name_from_nr(overlay_nr + i),
2490 unittest_path(unittest_nr + i,
2491 PDEV_OVERLAY),
2492 !after ? "enabled" : "disabled");
2493 return;
2494 }
2495 }
2496
2497 for (i = 1; i >= 0; i--) {
2498 ovcs_id = save_ovcs_id[i];
2499 if (of_overlay_remove(&ovcs_id)) {
2500 unittest(0, "%s failed destroy @\"%s\"\n",
2501 overlay_name_from_nr(overlay_nr + i),
2502 unittest_path(unittest_nr + i,
2503 PDEV_OVERLAY));
2504 return;
2505 }
2506 of_unittest_untrack_overlay(save_ovcs_id[i]);
2507 }
2508
2509 for (i = 0; i < 2; i++) {
2510 /* unittest device must be again in before state */
2511 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2512 != before) {
2513 unittest(0, "%s with device @\"%s\" %s\n",
2514 overlay_name_from_nr(overlay_nr + i),
2515 unittest_path(unittest_nr + i,
2516 PDEV_OVERLAY),
2517 !before ? "enabled" : "disabled");
2518 return;
2519 }
2520 }
2521
2522 unittest(1, "overlay test %d passed\n", 6);
2523
2524}
2525
2526/* test overlay application in sequence */
2527static void __init of_unittest_overlay_8(void)
2528{
2529 int i, save_ovcs_id[2], ovcs_id;
2530 int overlay_nr = 8, unittest_nr = 8;
2531 const char *overlay_name;
2532 int ret;
2533
2534 /* we don't care about device state in this test */
2535
2536 EXPECT_BEGIN(KERN_INFO,
2537 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2538
2539 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2540
2541 ret = overlay_data_apply(overlay_name, &ovcs_id);
2542 if (!ret)
2543 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2544
2545 EXPECT_END(KERN_INFO,
2546 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2547
2548 if (!ret)
2549 return;
2550
2551 save_ovcs_id[0] = ovcs_id;
2552 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
2553
2554 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2555
2556 EXPECT_BEGIN(KERN_INFO,
2557 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2558
2559 /* apply the overlays */
2560 ret = overlay_data_apply(overlay_name, &ovcs_id);
2561
2562 EXPECT_END(KERN_INFO,
2563 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2564
2565 if (!ret) {
2566 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2567 return;
2568 }
2569
2570 save_ovcs_id[1] = ovcs_id;
2571 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
2572
2573 /* now try to remove first overlay (it should fail) */
2574 ovcs_id = save_ovcs_id[0];
2575
2576 EXPECT_BEGIN(KERN_INFO,
2577 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2578
2579 EXPECT_BEGIN(KERN_INFO,
2580 "OF: overlay: overlay #6 is not topmost");
2581
2582 ret = of_overlay_remove(&ovcs_id);
2583
2584 EXPECT_END(KERN_INFO,
2585 "OF: overlay: overlay #6 is not topmost");
2586
2587 EXPECT_END(KERN_INFO,
2588 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2589
2590 if (!ret) {
2591 /*
2592 * Should never get here. If we do, expect a lot of
2593 * subsequent tracking and overlay removal related errors.
2594 */
2595 unittest(0, "%s was destroyed @\"%s\"\n",
2596 overlay_name_from_nr(overlay_nr + 0),
2597 unittest_path(unittest_nr,
2598 PDEV_OVERLAY));
2599 return;
2600 }
2601
2602 /* removing them in order should work */
2603 for (i = 1; i >= 0; i--) {
2604 ovcs_id = save_ovcs_id[i];
2605 if (of_overlay_remove(&ovcs_id)) {
2606 unittest(0, "%s not destroyed @\"%s\"\n",
2607 overlay_name_from_nr(overlay_nr + i),
2608 unittest_path(unittest_nr,
2609 PDEV_OVERLAY));
2610 return;
2611 }
2612 of_unittest_untrack_overlay(save_ovcs_id[i]);
2613 }
2614
2615 unittest(1, "overlay test %d passed\n", 8);
2616}
2617
2618/* test insertion of a bus with parent devices */
2619static void __init of_unittest_overlay_10(void)
2620{
2621 int ret;
2622 char *child_path;
2623
2624 /* device should disable */
2625 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2626
2627 if (unittest(ret == 0,
2628 "overlay test %d failed; overlay application\n", 10))
2629 return;
2630
2631 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2632 unittest_path(10, PDEV_OVERLAY));
2633 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2634 return;
2635
2636 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2637 kfree(child_path);
2638
2639 unittest(ret, "overlay test %d failed; no child device\n", 10);
2640}
2641
2642/* test insertion of a bus with parent devices (and revert) */
2643static void __init of_unittest_overlay_11(void)
2644{
2645 int ret;
2646
2647 /* device should disable */
2648 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2649 PDEV_OVERLAY);
2650
2651 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2652}
2653
2654#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2655
2656struct unittest_i2c_bus_data {
2657 struct platform_device *pdev;
2658 struct i2c_adapter adap;
2659};
2660
2661static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2662 struct i2c_msg *msgs, int num)
2663{
2664 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2665
2666 (void)std;
2667
2668 return num;
2669}
2670
2671static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2672{
2673 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2674}
2675
2676static const struct i2c_algorithm unittest_i2c_algo = {
2677 .master_xfer = unittest_i2c_master_xfer,
2678 .functionality = unittest_i2c_functionality,
2679};
2680
2681static int unittest_i2c_bus_probe(struct platform_device *pdev)
2682{
2683 struct device *dev = &pdev->dev;
2684 struct device_node *np = dev->of_node;
2685 struct unittest_i2c_bus_data *std;
2686 struct i2c_adapter *adap;
2687 int ret;
2688
2689 if (np == NULL) {
2690 dev_err(dev, "No OF data for device\n");
2691 return -EINVAL;
2692
2693 }
2694
2695 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2696
2697 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2698 if (!std)
2699 return -ENOMEM;
2700
2701 /* link them together */
2702 std->pdev = pdev;
2703 platform_set_drvdata(pdev, std);
2704
2705 adap = &std->adap;
2706 i2c_set_adapdata(adap, std);
2707 adap->nr = -1;
2708 strscpy(adap->name, pdev->name, sizeof(adap->name));
2709 adap->class = I2C_CLASS_DEPRECATED;
2710 adap->algo = &unittest_i2c_algo;
2711 adap->dev.parent = dev;
2712 adap->dev.of_node = dev->of_node;
2713 adap->timeout = 5 * HZ;
2714 adap->retries = 3;
2715
2716 ret = i2c_add_numbered_adapter(adap);
2717 if (ret != 0) {
2718 dev_err(dev, "Failed to add I2C adapter\n");
2719 return ret;
2720 }
2721
2722 return 0;
2723}
2724
2725static void unittest_i2c_bus_remove(struct platform_device *pdev)
2726{
2727 struct device *dev = &pdev->dev;
2728 struct device_node *np = dev->of_node;
2729 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2730
2731 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2732 i2c_del_adapter(&std->adap);
2733}
2734
2735static const struct of_device_id unittest_i2c_bus_match[] = {
2736 { .compatible = "unittest-i2c-bus", },
2737 {},
2738};
2739
2740static struct platform_driver unittest_i2c_bus_driver = {
2741 .probe = unittest_i2c_bus_probe,
2742 .remove_new = unittest_i2c_bus_remove,
2743 .driver = {
2744 .name = "unittest-i2c-bus",
2745 .of_match_table = unittest_i2c_bus_match,
2746 },
2747};
2748
2749static int unittest_i2c_dev_probe(struct i2c_client *client)
2750{
2751 struct device *dev = &client->dev;
2752 struct device_node *np = client->dev.of_node;
2753
2754 if (!np) {
2755 dev_err(dev, "No OF node\n");
2756 return -EINVAL;
2757 }
2758
2759 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2760
2761 return 0;
2762};
2763
2764static void unittest_i2c_dev_remove(struct i2c_client *client)
2765{
2766 struct device *dev = &client->dev;
2767 struct device_node *np = client->dev.of_node;
2768
2769 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2770}
2771
2772static const struct i2c_device_id unittest_i2c_dev_id[] = {
2773 { .name = "unittest-i2c-dev" },
2774 { }
2775};
2776
2777static struct i2c_driver unittest_i2c_dev_driver = {
2778 .driver = {
2779 .name = "unittest-i2c-dev",
2780 },
2781 .probe = unittest_i2c_dev_probe,
2782 .remove = unittest_i2c_dev_remove,
2783 .id_table = unittest_i2c_dev_id,
2784};
2785
2786#if IS_BUILTIN(CONFIG_I2C_MUX)
2787
2788static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2789{
2790 return 0;
2791}
2792
2793static int unittest_i2c_mux_probe(struct i2c_client *client)
2794{
2795 int i, nchans;
2796 struct device *dev = &client->dev;
2797 struct i2c_adapter *adap = client->adapter;
2798 struct device_node *np = client->dev.of_node, *child;
2799 struct i2c_mux_core *muxc;
2800 u32 reg, max_reg;
2801
2802 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2803
2804 if (!np) {
2805 dev_err(dev, "No OF node\n");
2806 return -EINVAL;
2807 }
2808
2809 max_reg = (u32)-1;
2810 for_each_child_of_node(np, child) {
2811 if (of_property_read_u32(child, "reg", ®))
2812 continue;
2813 if (max_reg == (u32)-1 || reg > max_reg)
2814 max_reg = reg;
2815 }
2816 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2817 if (nchans == 0) {
2818 dev_err(dev, "No channels\n");
2819 return -EINVAL;
2820 }
2821
2822 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2823 unittest_i2c_mux_select_chan, NULL);
2824 if (!muxc)
2825 return -ENOMEM;
2826 for (i = 0; i < nchans; i++) {
2827 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2828 dev_err(dev, "Failed to register mux #%d\n", i);
2829 i2c_mux_del_adapters(muxc);
2830 return -ENODEV;
2831 }
2832 }
2833
2834 i2c_set_clientdata(client, muxc);
2835
2836 return 0;
2837};
2838
2839static void unittest_i2c_mux_remove(struct i2c_client *client)
2840{
2841 struct device *dev = &client->dev;
2842 struct device_node *np = client->dev.of_node;
2843 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2844
2845 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2846 i2c_mux_del_adapters(muxc);
2847}
2848
2849static const struct i2c_device_id unittest_i2c_mux_id[] = {
2850 { .name = "unittest-i2c-mux" },
2851 { }
2852};
2853
2854static struct i2c_driver unittest_i2c_mux_driver = {
2855 .driver = {
2856 .name = "unittest-i2c-mux",
2857 },
2858 .probe = unittest_i2c_mux_probe,
2859 .remove = unittest_i2c_mux_remove,
2860 .id_table = unittest_i2c_mux_id,
2861};
2862
2863#endif
2864
2865static int of_unittest_overlay_i2c_init(void)
2866{
2867 int ret;
2868
2869 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2870 if (unittest(ret == 0,
2871 "could not register unittest i2c device driver\n"))
2872 return ret;
2873
2874 ret = platform_driver_register(&unittest_i2c_bus_driver);
2875
2876 if (unittest(ret == 0,
2877 "could not register unittest i2c bus driver\n"))
2878 return ret;
2879
2880#if IS_BUILTIN(CONFIG_I2C_MUX)
2881
2882 EXPECT_BEGIN(KERN_INFO,
2883 "i2c i2c-1: Added multiplexed i2c bus 2");
2884
2885 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2886
2887 EXPECT_END(KERN_INFO,
2888 "i2c i2c-1: Added multiplexed i2c bus 2");
2889
2890 if (unittest(ret == 0,
2891 "could not register unittest i2c mux driver\n"))
2892 return ret;
2893#endif
2894
2895 return 0;
2896}
2897
2898static void of_unittest_overlay_i2c_cleanup(void)
2899{
2900#if IS_BUILTIN(CONFIG_I2C_MUX)
2901 i2c_del_driver(&unittest_i2c_mux_driver);
2902#endif
2903 platform_driver_unregister(&unittest_i2c_bus_driver);
2904 i2c_del_driver(&unittest_i2c_dev_driver);
2905}
2906
2907static void __init of_unittest_overlay_i2c_12(void)
2908{
2909 int ret;
2910
2911 /* device should enable */
2912 EXPECT_BEGIN(KERN_INFO,
2913 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2914
2915 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2916
2917 EXPECT_END(KERN_INFO,
2918 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2919
2920 if (ret)
2921 return;
2922
2923 unittest(1, "overlay test %d passed\n", 12);
2924}
2925
2926/* test deactivation of device */
2927static void __init of_unittest_overlay_i2c_13(void)
2928{
2929 int ret;
2930
2931 EXPECT_BEGIN(KERN_INFO,
2932 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2933
2934 /* device should disable */
2935 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2936
2937 EXPECT_END(KERN_INFO,
2938 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2939
2940 if (ret)
2941 return;
2942
2943 unittest(1, "overlay test %d passed\n", 13);
2944}
2945
2946/* just check for i2c mux existence */
2947static void of_unittest_overlay_i2c_14(void)
2948{
2949}
2950
2951static void __init of_unittest_overlay_i2c_15(void)
2952{
2953 int ret;
2954
2955 /* device should enable */
2956 EXPECT_BEGIN(KERN_INFO,
2957 "i2c i2c-1: Added multiplexed i2c bus 3");
2958
2959 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2960
2961 EXPECT_END(KERN_INFO,
2962 "i2c i2c-1: Added multiplexed i2c bus 3");
2963
2964 if (ret)
2965 return;
2966
2967 unittest(1, "overlay test %d passed\n", 15);
2968}
2969
2970#else
2971
2972static inline void of_unittest_overlay_i2c_14(void) { }
2973static inline void of_unittest_overlay_i2c_15(void) { }
2974
2975#endif
2976
2977static int of_notify(struct notifier_block *nb, unsigned long action,
2978 void *arg)
2979{
2980 struct of_overlay_notify_data *nd = arg;
2981 struct device_node *found;
2982 int ret;
2983
2984 /*
2985 * For overlay_16 .. overlay_19, check that returning an error
2986 * works for each of the actions by setting an arbitrary return
2987 * error number that matches the test number. e.g. for unittest16,
2988 * ret = -EBUSY which is -16.
2989 *
2990 * OVERLAY_INFO() for the overlays is declared to expect the same
2991 * error number, so overlay_data_apply() will return no error.
2992 *
2993 * overlay_20 will return NOTIFY_DONE
2994 */
2995
2996 ret = 0;
2997 of_node_get(nd->overlay);
2998
2999 switch (action) {
3000
3001 case OF_OVERLAY_PRE_APPLY:
3002 found = of_find_node_by_name(nd->overlay, "test-unittest16");
3003 if (found) {
3004 of_node_put(found);
3005 ret = -EBUSY;
3006 }
3007 break;
3008
3009 case OF_OVERLAY_POST_APPLY:
3010 found = of_find_node_by_name(nd->overlay, "test-unittest17");
3011 if (found) {
3012 of_node_put(found);
3013 ret = -EEXIST;
3014 }
3015 break;
3016
3017 case OF_OVERLAY_PRE_REMOVE:
3018 found = of_find_node_by_name(nd->overlay, "test-unittest18");
3019 if (found) {
3020 of_node_put(found);
3021 ret = -EXDEV;
3022 }
3023 break;
3024
3025 case OF_OVERLAY_POST_REMOVE:
3026 found = of_find_node_by_name(nd->overlay, "test-unittest19");
3027 if (found) {
3028 of_node_put(found);
3029 ret = -ENODEV;
3030 }
3031 break;
3032
3033 default: /* should not happen */
3034 of_node_put(nd->overlay);
3035 ret = -EINVAL;
3036 break;
3037 }
3038
3039 if (ret)
3040 return notifier_from_errno(ret);
3041
3042 return NOTIFY_DONE;
3043}
3044
3045static struct notifier_block of_nb = {
3046 .notifier_call = of_notify,
3047};
3048
3049static void __init of_unittest_overlay_notify(void)
3050{
3051 int ovcs_id;
3052 int ret;
3053
3054 ret = of_overlay_notifier_register(&of_nb);
3055 unittest(!ret,
3056 "of_overlay_notifier_register() failed, ret = %d\n", ret);
3057 if (ret)
3058 return;
3059
3060 /*
3061 * The overlays are applied by overlay_data_apply()
3062 * instead of of_unittest_apply_overlay() so that they
3063 * will not be tracked. Thus they will not be removed
3064 * by of_unittest_remove_tracked_overlays().
3065 *
3066 * Applying overlays 16 - 19 will each trigger an error for a
3067 * different action in of_notify().
3068 *
3069 * Applying overlay 20 will not trigger any error in of_notify().
3070 */
3071
3072 /* --- overlay 16 --- */
3073
3074 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3075
3076 unittest(overlay_data_apply("overlay_16", &ovcs_id),
3077 "test OF_OVERLAY_PRE_APPLY notify injected error\n");
3078
3079 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3080
3081 unittest(ovcs_id, "ovcs_id not created for overlay_16\n");
3082
3083 /* --- overlay 17 --- */
3084
3085 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3086
3087 unittest(overlay_data_apply("overlay_17", &ovcs_id),
3088 "test OF_OVERLAY_POST_APPLY notify injected error\n");
3089
3090 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3091
3092 unittest(ovcs_id, "ovcs_id not created for overlay_17\n");
3093
3094 /* --- overlay 18 --- */
3095
3096 unittest(overlay_data_apply("overlay_18", &ovcs_id),
3097 "OF_OVERLAY_PRE_REMOVE notify injected error\n");
3098
3099 unittest(ovcs_id, "ovcs_id not created for overlay_18\n");
3100
3101 if (ovcs_id) {
3102 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus");
3103
3104 ret = of_overlay_remove(&ovcs_id);
3105 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus");
3106 if (ret == -EXDEV) {
3107 /*
3108 * change set ovcs_id should still exist
3109 */
3110 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n");
3111 } else {
3112 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n");
3113 }
3114 } else {
3115 unittest(1, "ovcs_id not created for overlay_18\n");
3116 }
3117
3118 unittest(ovcs_id, "ovcs_id removed for overlay_18\n");
3119
3120 /* --- overlay 19 --- */
3121
3122 unittest(overlay_data_apply("overlay_19", &ovcs_id),
3123 "OF_OVERLAY_POST_REMOVE notify injected error\n");
3124
3125 unittest(ovcs_id, "ovcs_id not created for overlay_19\n");
3126
3127 if (ovcs_id) {
3128 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus");
3129 ret = of_overlay_remove(&ovcs_id);
3130 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus");
3131 if (ret == -ENODEV)
3132 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n");
3133 else
3134 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n");
3135 } else {
3136 unittest(1, "ovcs_id removed for overlay_19\n");
3137 }
3138
3139 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n",
3140 ovcs_id);
3141
3142 /* --- overlay 20 --- */
3143
3144 unittest(overlay_data_apply("overlay_20", &ovcs_id),
3145 "overlay notify no injected error\n");
3146
3147 if (ovcs_id) {
3148 ret = of_overlay_remove(&ovcs_id);
3149 if (ret)
3150 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n",
3151 ret);
3152 } else {
3153 unittest(1, "ovcs_id not created for overlay_20\n");
3154 }
3155
3156 unittest(!of_overlay_notifier_unregister(&of_nb),
3157 "of_overlay_notifier_unregister() failed, ret = %d\n", ret);
3158}
3159
3160static void __init of_unittest_overlay(void)
3161{
3162 struct device_node *bus_np = NULL;
3163 unsigned int i;
3164
3165 if (platform_driver_register(&unittest_driver)) {
3166 unittest(0, "could not register unittest driver\n");
3167 goto out;
3168 }
3169
3170 bus_np = of_find_node_by_path(bus_path);
3171 if (bus_np == NULL) {
3172 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
3173 goto out;
3174 }
3175
3176 if (of_platform_default_populate(bus_np, NULL, NULL)) {
3177 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
3178 goto out;
3179 }
3180
3181 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
3182 unittest(0, "could not find unittest0 @ \"%s\"\n",
3183 unittest_path(100, PDEV_OVERLAY));
3184 goto out;
3185 }
3186
3187 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
3188 unittest(0, "unittest1 @ \"%s\" should not exist\n",
3189 unittest_path(101, PDEV_OVERLAY));
3190 goto out;
3191 }
3192
3193 unittest(1, "basic infrastructure of overlays passed");
3194
3195 /* tests in sequence */
3196 of_unittest_overlay_0();
3197 of_unittest_overlay_1();
3198 of_unittest_overlay_2();
3199 of_unittest_overlay_3();
3200 of_unittest_overlay_4();
3201 for (i = 0; i < 3; i++)
3202 of_unittest_overlay_5();
3203 of_unittest_overlay_6();
3204 of_unittest_overlay_8();
3205
3206 of_unittest_overlay_10();
3207 of_unittest_overlay_11();
3208
3209#if IS_BUILTIN(CONFIG_I2C)
3210 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
3211 goto out;
3212
3213 of_unittest_overlay_i2c_12();
3214 of_unittest_overlay_i2c_13();
3215 of_unittest_overlay_i2c_14();
3216 of_unittest_overlay_i2c_15();
3217
3218 of_unittest_overlay_i2c_cleanup();
3219#endif
3220
3221 of_unittest_overlay_gpio();
3222
3223 of_unittest_remove_tracked_overlays();
3224
3225 of_unittest_overlay_notify();
3226
3227out:
3228 of_node_put(bus_np);
3229}
3230
3231#else
3232static inline void __init of_unittest_overlay(void) { }
3233#endif
3234
3235static void __init of_unittest_lifecycle(void)
3236{
3237#ifdef CONFIG_OF_DYNAMIC
3238 unsigned int refcount;
3239 int found_refcount_one = 0;
3240 int put_count = 0;
3241 struct device_node *np;
3242 struct device_node *prev_sibling, *next_sibling;
3243 const char *refcount_path = "/testcase-data/refcount-node";
3244 const char *refcount_parent_path = "/testcase-data";
3245
3246 /*
3247 * Node lifecycle tests, non-dynamic node:
3248 *
3249 * - Decrementing refcount to zero via of_node_put() should cause the
3250 * attempt to free the node memory by of_node_release() to fail
3251 * because the node is not a dynamic node.
3252 *
3253 * - Decrementing refcount past zero should result in additional
3254 * errors reported.
3255 */
3256
3257 np = of_find_node_by_path(refcount_path);
3258 unittest(np, "find refcount_path \"%s\"\n", refcount_path);
3259 if (np == NULL)
3260 goto out_skip_tests;
3261
3262 while (!found_refcount_one) {
3263
3264 if (put_count++ > 10) {
3265 unittest(0, "guardrail to avoid infinite loop\n");
3266 goto out_skip_tests;
3267 }
3268
3269 refcount = kref_read(&np->kobj.kref);
3270 if (refcount == 1)
3271 found_refcount_one = 1;
3272 else
3273 of_node_put(np);
3274 }
3275
3276 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
3277
3278 /*
3279 * refcount is now one, decrementing to zero will result in a call to
3280 * of_node_release() to free the node's memory, which should result
3281 * in an error
3282 */
3283 unittest(1, "/testcase-data/refcount-node is one");
3284 of_node_put(np);
3285
3286 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
3287
3288
3289 /*
3290 * expect stack trace for subsequent of_node_put():
3291 * __refcount_sub_and_test() calls:
3292 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF)
3293 *
3294 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just
3295 * the first three lines, and the last line.
3296 */
3297 EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------");
3298 EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>");
3299 EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free.");
3300 EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---");
3301
3302 /* refcount is now zero, this should fail */
3303 unittest(1, "/testcase-data/refcount-node is zero");
3304 of_node_put(np);
3305
3306 EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---");
3307 EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free.");
3308 EXPECT_END(KERN_INFO, "WARNING: <<all>>");
3309 EXPECT_END(KERN_INFO, "------------[ cut here ]------------");
3310
3311 /*
3312 * Q. do we expect to get yet another warning?
3313 * A. no, the WARNING is from WARN_ONCE()
3314 */
3315 EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------");
3316 EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>");
3317 EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free.");
3318 EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---");
3319
3320 unittest(1, "/testcase-data/refcount-node is zero, second time");
3321 of_node_put(np);
3322
3323 EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---");
3324 EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free.");
3325 EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>");
3326 EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------");
3327
3328 /*
3329 * refcount of zero will trigger stack traces from any further
3330 * attempt to of_node_get() node "refcount-node". One example of
3331 * this is where of_unittest_check_node_linkage() will recursively
3332 * scan the tree, with 'for_each_child_of_node()' doing an
3333 * of_node_get() of the children of a node.
3334 *
3335 * Prevent the stack trace by removing node "refcount-node" from
3336 * its parent's child list.
3337 *
3338 * WARNING: EVIL, EVIL, EVIL:
3339 *
3340 * Directly manipulate the child list of node /testcase-data to
3341 * remove child refcount-node. This is ignoring all proper methods
3342 * of removing a child and will leak a small amount of memory.
3343 */
3344
3345 np = of_find_node_by_path(refcount_parent_path);
3346 unittest(np, "find refcount_parent_path \"%s\"\n", refcount_parent_path);
3347 unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n");
3348 if (np == NULL)
3349 return;
3350
3351 prev_sibling = np->child;
3352 next_sibling = prev_sibling->sibling;
3353 if (!strcmp(prev_sibling->full_name, "refcount-node")) {
3354 np->child = next_sibling;
3355 next_sibling = next_sibling->sibling;
3356 }
3357 while (next_sibling) {
3358 if (!strcmp(next_sibling->full_name, "refcount-node"))
3359 prev_sibling->sibling = next_sibling->sibling;
3360 prev_sibling = next_sibling;
3361 next_sibling = next_sibling->sibling;
3362 }
3363 of_node_put(np);
3364
3365 return;
3366
3367out_skip_tests:
3368#endif
3369 unittest(0, "One or more lifecycle tests skipped\n");
3370}
3371
3372#ifdef CONFIG_OF_OVERLAY
3373
3374/*
3375 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are
3376 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
3377 */
3378
3379#define OVERLAY_INFO_EXTERN(overlay_name) \
3380 extern uint8_t __dtbo_##overlay_name##_begin[]; \
3381 extern uint8_t __dtbo_##overlay_name##_end[]
3382
3383#define OVERLAY_INFO(overlay_name, expected, expected_remove) \
3384{ .dtbo_begin = __dtbo_##overlay_name##_begin, \
3385 .dtbo_end = __dtbo_##overlay_name##_end, \
3386 .expected_result = expected, \
3387 .expected_result_remove = expected_remove, \
3388 .name = #overlay_name, \
3389}
3390
3391struct overlay_info {
3392 uint8_t *dtbo_begin;
3393 uint8_t *dtbo_end;
3394 int expected_result;
3395 int expected_result_remove; /* if apply failed */
3396 int ovcs_id;
3397 char *name;
3398};
3399
3400OVERLAY_INFO_EXTERN(overlay_base);
3401OVERLAY_INFO_EXTERN(overlay);
3402OVERLAY_INFO_EXTERN(overlay_0);
3403OVERLAY_INFO_EXTERN(overlay_1);
3404OVERLAY_INFO_EXTERN(overlay_2);
3405OVERLAY_INFO_EXTERN(overlay_3);
3406OVERLAY_INFO_EXTERN(overlay_4);
3407OVERLAY_INFO_EXTERN(overlay_5);
3408OVERLAY_INFO_EXTERN(overlay_6);
3409OVERLAY_INFO_EXTERN(overlay_7);
3410OVERLAY_INFO_EXTERN(overlay_8);
3411OVERLAY_INFO_EXTERN(overlay_9);
3412OVERLAY_INFO_EXTERN(overlay_10);
3413OVERLAY_INFO_EXTERN(overlay_11);
3414OVERLAY_INFO_EXTERN(overlay_12);
3415OVERLAY_INFO_EXTERN(overlay_13);
3416OVERLAY_INFO_EXTERN(overlay_15);
3417OVERLAY_INFO_EXTERN(overlay_16);
3418OVERLAY_INFO_EXTERN(overlay_17);
3419OVERLAY_INFO_EXTERN(overlay_18);
3420OVERLAY_INFO_EXTERN(overlay_19);
3421OVERLAY_INFO_EXTERN(overlay_20);
3422OVERLAY_INFO_EXTERN(overlay_gpio_01);
3423OVERLAY_INFO_EXTERN(overlay_gpio_02a);
3424OVERLAY_INFO_EXTERN(overlay_gpio_02b);
3425OVERLAY_INFO_EXTERN(overlay_gpio_03);
3426OVERLAY_INFO_EXTERN(overlay_gpio_04a);
3427OVERLAY_INFO_EXTERN(overlay_gpio_04b);
3428OVERLAY_INFO_EXTERN(overlay_pci_node);
3429OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
3430OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
3431OVERLAY_INFO_EXTERN(overlay_bad_phandle);
3432OVERLAY_INFO_EXTERN(overlay_bad_symbol);
3433OVERLAY_INFO_EXTERN(overlay_bad_unresolved);
3434
3435/* entries found by name */
3436static struct overlay_info overlays[] = {
3437 OVERLAY_INFO(overlay_base, -9999, 0),
3438 OVERLAY_INFO(overlay, 0, 0),
3439 OVERLAY_INFO(overlay_0, 0, 0),
3440 OVERLAY_INFO(overlay_1, 0, 0),
3441 OVERLAY_INFO(overlay_2, 0, 0),
3442 OVERLAY_INFO(overlay_3, 0, 0),
3443 OVERLAY_INFO(overlay_4, 0, 0),
3444 OVERLAY_INFO(overlay_5, 0, 0),
3445 OVERLAY_INFO(overlay_6, 0, 0),
3446 OVERLAY_INFO(overlay_7, 0, 0),
3447 OVERLAY_INFO(overlay_8, 0, 0),
3448 OVERLAY_INFO(overlay_9, 0, 0),
3449 OVERLAY_INFO(overlay_10, 0, 0),
3450 OVERLAY_INFO(overlay_11, 0, 0),
3451 OVERLAY_INFO(overlay_12, 0, 0),
3452 OVERLAY_INFO(overlay_13, 0, 0),
3453 OVERLAY_INFO(overlay_15, 0, 0),
3454 OVERLAY_INFO(overlay_16, -EBUSY, 0),
3455 OVERLAY_INFO(overlay_17, -EEXIST, 0),
3456 OVERLAY_INFO(overlay_18, 0, 0),
3457 OVERLAY_INFO(overlay_19, 0, 0),
3458 OVERLAY_INFO(overlay_20, 0, 0),
3459 OVERLAY_INFO(overlay_gpio_01, 0, 0),
3460 OVERLAY_INFO(overlay_gpio_02a, 0, 0),
3461 OVERLAY_INFO(overlay_gpio_02b, 0, 0),
3462 OVERLAY_INFO(overlay_gpio_03, 0, 0),
3463 OVERLAY_INFO(overlay_gpio_04a, 0, 0),
3464 OVERLAY_INFO(overlay_gpio_04b, 0, 0),
3465 OVERLAY_INFO(overlay_pci_node, 0, 0),
3466 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV),
3467 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV),
3468 OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0),
3469 OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV),
3470 OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0),
3471 /* end marker */
3472 { }
3473};
3474
3475static struct device_node *overlay_base_root;
3476
3477static void * __init dt_alloc_memory(u64 size, u64 align)
3478{
3479 void *ptr = memblock_alloc(size, align);
3480
3481 if (!ptr)
3482 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
3483 __func__, size, align);
3484
3485 return ptr;
3486}
3487
3488/*
3489 * Create base device tree for the overlay unittest.
3490 *
3491 * This is called from very early boot code.
3492 *
3493 * Do as much as possible the same way as done in __unflatten_device_tree
3494 * and other early boot steps for the normal FDT so that the overlay base
3495 * unflattened tree will have the same characteristics as the real tree
3496 * (such as having memory allocated by the early allocator). The goal
3497 * is to test "the real thing" as much as possible, and test "test setup
3498 * code" as little as possible.
3499 *
3500 * Have to stop before resolving phandles, because that uses kmalloc.
3501 */
3502void __init unittest_unflatten_overlay_base(void)
3503{
3504 struct overlay_info *info;
3505 u32 data_size;
3506 void *new_fdt;
3507 u32 size;
3508 int found = 0;
3509 const char *overlay_name = "overlay_base";
3510
3511 for (info = overlays; info && info->name; info++) {
3512 if (!strcmp(overlay_name, info->name)) {
3513 found = 1;
3514 break;
3515 }
3516 }
3517 if (!found) {
3518 pr_err("no overlay data for %s\n", overlay_name);
3519 return;
3520 }
3521
3522 info = &overlays[0];
3523
3524 if (info->expected_result != -9999) {
3525 pr_err("No dtb 'overlay_base' to attach\n");
3526 return;
3527 }
3528
3529 data_size = info->dtbo_end - info->dtbo_begin;
3530 if (!data_size) {
3531 pr_err("No dtb 'overlay_base' to attach\n");
3532 return;
3533 }
3534
3535 size = fdt_totalsize(info->dtbo_begin);
3536 if (size != data_size) {
3537 pr_err("dtb 'overlay_base' header totalsize != actual size");
3538 return;
3539 }
3540
3541 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
3542 if (!new_fdt) {
3543 pr_err("alloc for dtb 'overlay_base' failed");
3544 return;
3545 }
3546
3547 memcpy(new_fdt, info->dtbo_begin, size);
3548
3549 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
3550 dt_alloc_memory, true);
3551}
3552
3553/*
3554 * The purpose of of_unittest_overlay_data_add is to add an
3555 * overlay in the normal fashion. This is a test of the whole
3556 * picture, instead of testing individual elements.
3557 *
3558 * A secondary purpose is to be able to verify that the contents of
3559 * /proc/device-tree/ contains the updated structure and values from
3560 * the overlay. That must be verified separately in user space.
3561 *
3562 * Return 0 on unexpected error.
3563 */
3564static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id)
3565{
3566 struct overlay_info *info;
3567 int passed = 1;
3568 int found = 0;
3569 int ret, ret2;
3570 u32 size;
3571
3572 for (info = overlays; info && info->name; info++) {
3573 if (!strcmp(overlay_name, info->name)) {
3574 found = 1;
3575 break;
3576 }
3577 }
3578 if (!found) {
3579 pr_err("no overlay data for %s\n", overlay_name);
3580 return 0;
3581 }
3582
3583 size = info->dtbo_end - info->dtbo_begin;
3584 if (!size)
3585 pr_err("no overlay data for %s\n", overlay_name);
3586
3587 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id,
3588 NULL);
3589 if (ovcs_id)
3590 *ovcs_id = info->ovcs_id;
3591 if (ret < 0)
3592 goto out;
3593
3594 pr_debug("%s applied\n", overlay_name);
3595
3596out:
3597 if (ret != info->expected_result) {
3598 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3599 info->expected_result, ret, overlay_name);
3600 passed = 0;
3601 }
3602
3603 if (ret < 0) {
3604 /* changeset may be partially applied */
3605 ret2 = of_overlay_remove(&info->ovcs_id);
3606 if (ret2 != info->expected_result_remove) {
3607 pr_err("of_overlay_remove() expected %d, ret=%d, %s\n",
3608 info->expected_result_remove, ret2,
3609 overlay_name);
3610 passed = 0;
3611 }
3612 }
3613
3614 return passed;
3615}
3616
3617/*
3618 * The purpose of of_unittest_overlay_high_level is to add an overlay
3619 * in the normal fashion. This is a test of the whole picture,
3620 * instead of individual elements.
3621 *
3622 * The first part of the function is _not_ normal overlay usage; it is
3623 * finishing splicing the base overlay device tree into the live tree.
3624 */
3625static __init void of_unittest_overlay_high_level(void)
3626{
3627 struct device_node *last_sibling;
3628 struct device_node *np;
3629 struct device_node *of_symbols;
3630 struct device_node *overlay_base_symbols;
3631 struct device_node **pprev;
3632 struct property *prop;
3633 int ret;
3634
3635 if (!overlay_base_root) {
3636 unittest(0, "overlay_base_root not initialized\n");
3637 return;
3638 }
3639
3640 /*
3641 * Could not fixup phandles in unittest_unflatten_overlay_base()
3642 * because kmalloc() was not yet available.
3643 */
3644 of_overlay_mutex_lock();
3645 of_resolve_phandles(overlay_base_root);
3646 of_overlay_mutex_unlock();
3647
3648
3649 /*
3650 * do not allow overlay_base to duplicate any node already in
3651 * tree, this greatly simplifies the code
3652 */
3653
3654 /*
3655 * remove overlay_base_root node "__local_fixups", after
3656 * being used by of_resolve_phandles()
3657 */
3658 pprev = &overlay_base_root->child;
3659 for (np = overlay_base_root->child; np; np = np->sibling) {
3660 if (of_node_name_eq(np, "__local_fixups__")) {
3661 *pprev = np->sibling;
3662 break;
3663 }
3664 pprev = &np->sibling;
3665 }
3666
3667 /* remove overlay_base_root node "__symbols__" if in live tree */
3668 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3669 if (of_symbols) {
3670 /* will have to graft properties from node into live tree */
3671 pprev = &overlay_base_root->child;
3672 for (np = overlay_base_root->child; np; np = np->sibling) {
3673 if (of_node_name_eq(np, "__symbols__")) {
3674 overlay_base_symbols = np;
3675 *pprev = np->sibling;
3676 break;
3677 }
3678 pprev = &np->sibling;
3679 }
3680 }
3681
3682 for_each_child_of_node(overlay_base_root, np) {
3683 struct device_node *base_child;
3684 for_each_child_of_node(of_root, base_child) {
3685 if (!strcmp(np->full_name, base_child->full_name)) {
3686 unittest(0, "illegal node name in overlay_base %pOFn",
3687 np);
3688 of_node_put(np);
3689 of_node_put(base_child);
3690 return;
3691 }
3692 }
3693 }
3694
3695 /*
3696 * overlay 'overlay_base' is not allowed to have root
3697 * properties, so only need to splice nodes into main device tree.
3698 *
3699 * root node of *overlay_base_root will not be freed, it is lost
3700 * memory.
3701 */
3702
3703 for (np = overlay_base_root->child; np; np = np->sibling)
3704 np->parent = of_root;
3705
3706 mutex_lock(&of_mutex);
3707
3708 for (last_sibling = np = of_root->child; np; np = np->sibling)
3709 last_sibling = np;
3710
3711 if (last_sibling)
3712 last_sibling->sibling = overlay_base_root->child;
3713 else
3714 of_root->child = overlay_base_root->child;
3715
3716 for_each_of_allnodes_from(overlay_base_root, np)
3717 __of_attach_node_sysfs(np);
3718
3719 if (of_symbols) {
3720 struct property *new_prop;
3721 for_each_property_of_node(overlay_base_symbols, prop) {
3722
3723 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3724 if (!new_prop) {
3725 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3726 prop->name);
3727 goto err_unlock;
3728 }
3729 if (__of_add_property(of_symbols, new_prop)) {
3730 kfree(new_prop->name);
3731 kfree(new_prop->value);
3732 kfree(new_prop);
3733 /* "name" auto-generated by unflatten */
3734 if (!strcmp(prop->name, "name"))
3735 continue;
3736 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3737 prop->name);
3738 goto err_unlock;
3739 }
3740 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3741 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3742 prop->name);
3743 goto err_unlock;
3744 }
3745 }
3746 }
3747
3748 mutex_unlock(&of_mutex);
3749
3750
3751 /* now do the normal overlay usage test */
3752
3753 /* --- overlay --- */
3754
3755 EXPECT_BEGIN(KERN_ERR,
3756 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3757 EXPECT_BEGIN(KERN_ERR,
3758 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3759 EXPECT_BEGIN(KERN_ERR,
3760 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3761 EXPECT_BEGIN(KERN_ERR,
3762 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3763 EXPECT_BEGIN(KERN_ERR,
3764 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3765 EXPECT_BEGIN(KERN_ERR,
3766 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3767 EXPECT_BEGIN(KERN_ERR,
3768 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3769 EXPECT_BEGIN(KERN_ERR,
3770 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3771 EXPECT_BEGIN(KERN_ERR,
3772 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3773 EXPECT_BEGIN(KERN_ERR,
3774 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3775 EXPECT_BEGIN(KERN_ERR,
3776 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3777
3778 ret = overlay_data_apply("overlay", NULL);
3779
3780 EXPECT_END(KERN_ERR,
3781 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3782 EXPECT_END(KERN_ERR,
3783 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3784 EXPECT_END(KERN_ERR,
3785 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3786 EXPECT_END(KERN_ERR,
3787 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3788 EXPECT_END(KERN_ERR,
3789 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3790 EXPECT_END(KERN_ERR,
3791 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3792 EXPECT_END(KERN_ERR,
3793 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3794 EXPECT_END(KERN_ERR,
3795 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3796 EXPECT_END(KERN_ERR,
3797 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3798 EXPECT_END(KERN_ERR,
3799 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3800 EXPECT_END(KERN_ERR,
3801 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3802
3803 unittest(ret, "Adding overlay 'overlay' failed\n");
3804
3805 /* --- overlay_bad_add_dup_node --- */
3806
3807 EXPECT_BEGIN(KERN_ERR,
3808 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3809 EXPECT_BEGIN(KERN_ERR,
3810 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3811 EXPECT_BEGIN(KERN_ERR,
3812 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name");
3813 EXPECT_BEGIN(KERN_ERR,
3814 "OF: Error reverting changeset (-19)");
3815
3816 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3817 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3818
3819 EXPECT_END(KERN_ERR,
3820 "OF: Error reverting changeset (-19)");
3821 EXPECT_END(KERN_ERR,
3822 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name");
3823 EXPECT_END(KERN_ERR,
3824 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3825 EXPECT_END(KERN_ERR,
3826 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3827
3828 /* --- overlay_bad_add_dup_prop --- */
3829
3830 EXPECT_BEGIN(KERN_ERR,
3831 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3832 EXPECT_BEGIN(KERN_ERR,
3833 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3834 EXPECT_BEGIN(KERN_ERR,
3835 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3836 EXPECT_BEGIN(KERN_ERR,
3837 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name");
3838 EXPECT_BEGIN(KERN_ERR,
3839 "OF: Error reverting changeset (-19)");
3840
3841 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3842 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3843
3844 EXPECT_END(KERN_ERR,
3845 "OF: Error reverting changeset (-19)");
3846 EXPECT_END(KERN_ERR,
3847 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name");
3848 EXPECT_END(KERN_ERR,
3849 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3850 EXPECT_END(KERN_ERR,
3851 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3852 EXPECT_END(KERN_ERR,
3853 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3854
3855 /* --- overlay_bad_phandle --- */
3856
3857 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3858 "Adding overlay 'overlay_bad_phandle' failed\n");
3859
3860 /* --- overlay_bad_symbol --- */
3861
3862 EXPECT_BEGIN(KERN_ERR,
3863 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name");
3864 EXPECT_BEGIN(KERN_ERR,
3865 "OF: Error reverting changeset (-19)");
3866
3867 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3868 "Adding overlay 'overlay_bad_symbol' failed\n");
3869
3870 EXPECT_END(KERN_ERR,
3871 "OF: Error reverting changeset (-19)");
3872 EXPECT_END(KERN_ERR,
3873 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name");
3874
3875 /* --- overlay_bad_unresolved --- */
3876
3877 EXPECT_BEGIN(KERN_ERR,
3878 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table");
3879 EXPECT_BEGIN(KERN_ERR,
3880 "OF: resolver: overlay phandle fixup failed: -22");
3881
3882 unittest(overlay_data_apply("overlay_bad_unresolved", NULL),
3883 "Adding overlay 'overlay_bad_unresolved' failed\n");
3884
3885 EXPECT_END(KERN_ERR,
3886 "OF: resolver: overlay phandle fixup failed: -22");
3887 EXPECT_END(KERN_ERR,
3888 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table");
3889
3890 return;
3891
3892err_unlock:
3893 mutex_unlock(&of_mutex);
3894}
3895
3896static int of_unittest_pci_dev_num;
3897static int of_unittest_pci_child_num;
3898
3899/*
3900 * PCI device tree node test driver
3901 */
3902static const struct pci_device_id testdrv_pci_ids[] = {
3903 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */
3904 { 0, }
3905};
3906
3907static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3908{
3909 struct overlay_info *info;
3910 struct device_node *dn;
3911 int ret, ovcs_id;
3912 u32 size;
3913
3914 dn = pdev->dev.of_node;
3915 if (!dn) {
3916 dev_err(&pdev->dev, "does not find bus endpoint");
3917 return -EINVAL;
3918 }
3919
3920 for (info = overlays; info && info->name; info++) {
3921 if (!strcmp(info->name, "overlay_pci_node"))
3922 break;
3923 }
3924 if (!info || !info->name) {
3925 dev_err(&pdev->dev, "no overlay data for overlay_pci_node");
3926 return -ENODEV;
3927 }
3928
3929 size = info->dtbo_end - info->dtbo_begin;
3930 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn);
3931 of_node_put(dn);
3932 if (ret)
3933 return ret;
3934
3935 of_platform_default_populate(dn, NULL, &pdev->dev);
3936 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id);
3937
3938 return 0;
3939}
3940
3941static void testdrv_remove(struct pci_dev *pdev)
3942{
3943 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev);
3944
3945 of_platform_depopulate(&pdev->dev);
3946 of_overlay_remove(&ovcs_id);
3947}
3948
3949static struct pci_driver testdrv_driver = {
3950 .name = "pci_dt_testdrv",
3951 .id_table = testdrv_pci_ids,
3952 .probe = testdrv_probe,
3953 .remove = testdrv_remove,
3954};
3955
3956static int unittest_pci_probe(struct platform_device *pdev)
3957{
3958 struct resource *res;
3959 struct device *dev;
3960 u64 exp_addr;
3961
3962 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3963 if (!res)
3964 return -ENODEV;
3965
3966 dev = &pdev->dev;
3967 while (dev && !dev_is_pci(dev))
3968 dev = dev->parent;
3969 if (!dev) {
3970 pr_err("unable to find parent device\n");
3971 return -ENODEV;
3972 }
3973
3974 exp_addr = pci_resource_start(to_pci_dev(dev), 0) + 0x100;
3975 unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n",
3976 (u64)res->start, exp_addr);
3977
3978 of_unittest_pci_child_num++;
3979
3980 return 0;
3981}
3982
3983static const struct of_device_id unittest_pci_of_match[] = {
3984 { .compatible = "unittest-pci" },
3985 { }
3986};
3987
3988static struct platform_driver unittest_pci_driver = {
3989 .probe = unittest_pci_probe,
3990 .driver = {
3991 .name = "unittest-pci",
3992 .of_match_table = unittest_pci_of_match,
3993 },
3994};
3995
3996static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add)
3997{
3998 struct device_node *pnp, *np = NULL;
3999 struct device *child_dev;
4000 char *path = NULL;
4001 const __be32 *reg;
4002 int rc = 0;
4003
4004 pnp = pdev->dev.of_node;
4005 unittest(pnp, "Failed creating PCI dt node\n");
4006 if (!pnp)
4007 return -ENODEV;
4008
4009 if (add) {
4010 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100", pnp);
4011 np = of_find_node_by_path(path);
4012 unittest(np, "Failed to get unittest-pci node under PCI node\n");
4013 if (!np) {
4014 rc = -ENODEV;
4015 goto failed;
4016 }
4017
4018 reg = of_get_property(np, "reg", NULL);
4019 unittest(reg, "Failed to get reg property\n");
4020 if (!reg)
4021 rc = -ENODEV;
4022 } else {
4023 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0", pnp);
4024 np = of_find_node_by_path(path);
4025 unittest(!np, "Child device tree node is not removed\n");
4026 child_dev = device_find_any_child(&pdev->dev);
4027 unittest(!child_dev, "Child device is not removed\n");
4028 }
4029
4030failed:
4031 kfree(path);
4032 if (np)
4033 of_node_put(np);
4034
4035 return rc;
4036}
4037
4038static void __init of_unittest_pci_node(void)
4039{
4040 struct pci_dev *pdev = NULL;
4041 int rc;
4042
4043 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES))
4044 return;
4045
4046 rc = pci_register_driver(&testdrv_driver);
4047 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc);
4048 if (rc)
4049 return;
4050
4051 rc = platform_driver_register(&unittest_pci_driver);
4052 if (unittest(!rc, "Failed to register unittest pci driver\n")) {
4053 pci_unregister_driver(&testdrv_driver);
4054 return;
4055 }
4056
4057 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) {
4058 of_unittest_pci_node_verify(pdev, true);
4059 of_unittest_pci_dev_num++;
4060 }
4061 if (pdev)
4062 pci_dev_put(pdev);
4063
4064 unittest(of_unittest_pci_dev_num,
4065 "No test PCI device been found. Please run QEMU with '-device pci-testdev'\n");
4066 unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num,
4067 "Child device number %d is not expected %d", of_unittest_pci_child_num,
4068 of_unittest_pci_dev_num);
4069
4070 platform_driver_unregister(&unittest_pci_driver);
4071 pci_unregister_driver(&testdrv_driver);
4072
4073 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL)
4074 of_unittest_pci_node_verify(pdev, false);
4075 if (pdev)
4076 pci_dev_put(pdev);
4077}
4078#else
4079
4080static inline __init void of_unittest_overlay_high_level(void) {}
4081static inline __init void of_unittest_pci_node(void) { }
4082
4083#endif
4084
4085static int __init of_unittest(void)
4086{
4087 struct device_node *np;
4088 int res;
4089
4090 pr_info("start of unittest - you will see error messages\n");
4091
4092 /* Taint the kernel so we know we've run tests. */
4093 add_taint(TAINT_TEST, LOCKDEP_STILL_OK);
4094
4095 /* adding data for unittest */
4096
4097 if (IS_ENABLED(CONFIG_UML))
4098 unittest_unflatten_overlay_base();
4099
4100 res = unittest_data_add();
4101 if (res)
4102 return res;
4103 if (!of_aliases)
4104 of_aliases = of_find_node_by_path("/aliases");
4105
4106 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
4107 if (!np) {
4108 pr_info("No testcase data in device tree; not running tests\n");
4109 return 0;
4110 }
4111 of_node_put(np);
4112
4113 of_unittest_check_tree_linkage();
4114 of_unittest_check_phandles();
4115 of_unittest_find_node_by_name();
4116 of_unittest_dynamic();
4117 of_unittest_parse_phandle_with_args();
4118 of_unittest_parse_phandle_with_args_map();
4119 of_unittest_printf();
4120 of_unittest_property_string();
4121 of_unittest_property_copy();
4122 of_unittest_changeset();
4123 of_unittest_parse_interrupts();
4124 of_unittest_parse_interrupts_extended();
4125 of_unittest_dma_get_max_cpu_address();
4126 of_unittest_parse_dma_ranges();
4127 of_unittest_pci_dma_ranges();
4128 of_unittest_bus_ranges();
4129 of_unittest_bus_3cell_ranges();
4130 of_unittest_reg();
4131 of_unittest_translate_addr();
4132 of_unittest_match_node();
4133 of_unittest_platform_populate();
4134 of_unittest_overlay();
4135 of_unittest_lifecycle();
4136 of_unittest_pci_node();
4137
4138 /* Double check linkage after removing testcase data */
4139 of_unittest_check_tree_linkage();
4140
4141 of_unittest_overlay_high_level();
4142
4143 pr_info("end of unittest - %i passed, %i failed\n",
4144 unittest_results.passed, unittest_results.failed);
4145
4146 return 0;
4147}
4148late_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/pci.h>
26#include <linux/kernel.h>
27
28#include <linux/i2c.h>
29#include <linux/i2c-mux.h>
30#include <linux/gpio/driver.h>
31
32#include <linux/bitops.h>
33
34#include "of_private.h"
35
36static struct unittest_results {
37 int passed;
38 int failed;
39} unittest_results;
40
41#define unittest(result, fmt, ...) ({ \
42 bool failed = !(result); \
43 if (failed) { \
44 unittest_results.failed++; \
45 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
46 } else { \
47 unittest_results.passed++; \
48 pr_info("pass %s():%i\n", __func__, __LINE__); \
49 } \
50 failed; \
51})
52
53#ifdef CONFIG_OF_KOBJ
54#define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref)
55#else
56#define OF_KREF_READ(NODE) 1
57#endif
58
59/*
60 * Expected message may have a message level other than KERN_INFO.
61 * Print the expected message only if the current loglevel will allow
62 * the actual message to print.
63 *
64 * Do not use EXPECT_BEGIN(), EXPECT_END(), EXPECT_NOT_BEGIN(), or
65 * EXPECT_NOT_END() to report messages expected to be reported or not
66 * reported by pr_debug().
67 */
68#define EXPECT_BEGIN(level, fmt, ...) \
69 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
70
71#define EXPECT_END(level, fmt, ...) \
72 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
73
74#define EXPECT_NOT_BEGIN(level, fmt, ...) \
75 printk(level pr_fmt("EXPECT_NOT \\ : ") fmt, ##__VA_ARGS__)
76
77#define EXPECT_NOT_END(level, fmt, ...) \
78 printk(level pr_fmt("EXPECT_NOT / : ") fmt, ##__VA_ARGS__)
79
80static void __init of_unittest_find_node_by_name(void)
81{
82 struct device_node *np;
83 const char *options, *name;
84
85 np = of_find_node_by_path("/testcase-data");
86 name = kasprintf(GFP_KERNEL, "%pOF", np);
87 unittest(np && name && !strcmp("/testcase-data", name),
88 "find /testcase-data failed\n");
89 of_node_put(np);
90 kfree(name);
91
92 /* Test if trailing '/' works */
93 np = of_find_node_by_path("/testcase-data/");
94 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
95
96 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
97 name = kasprintf(GFP_KERNEL, "%pOF", np);
98 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
99 "find /testcase-data/phandle-tests/consumer-a failed\n");
100 of_node_put(np);
101 kfree(name);
102
103 np = of_find_node_by_path("testcase-alias");
104 name = kasprintf(GFP_KERNEL, "%pOF", np);
105 unittest(np && name && !strcmp("/testcase-data", name),
106 "find testcase-alias failed\n");
107 of_node_put(np);
108 kfree(name);
109
110 /* Test if trailing '/' works on aliases */
111 np = of_find_node_by_path("testcase-alias/");
112 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
113
114 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
115 name = kasprintf(GFP_KERNEL, "%pOF", np);
116 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
117 "find testcase-alias/phandle-tests/consumer-a failed\n");
118 of_node_put(np);
119 kfree(name);
120
121 np = of_find_node_by_path("/testcase-data/missing-path");
122 unittest(!np, "non-existent path returned node %pOF\n", np);
123 of_node_put(np);
124
125 np = of_find_node_by_path("missing-alias");
126 unittest(!np, "non-existent alias returned node %pOF\n", np);
127 of_node_put(np);
128
129 np = of_find_node_by_path("testcase-alias/missing-path");
130 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
131 of_node_put(np);
132
133 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
134 unittest(np && !strcmp("testoption", options),
135 "option path test failed\n");
136 of_node_put(np);
137
138 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
139 unittest(np && !strcmp("test/option", options),
140 "option path test, subcase #1 failed\n");
141 of_node_put(np);
142
143 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
144 unittest(np && !strcmp("test/option", options),
145 "option path test, subcase #2 failed\n");
146 of_node_put(np);
147
148 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
149 unittest(np, "NULL option path test failed\n");
150 of_node_put(np);
151
152 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
153 &options);
154 unittest(np && !strcmp("testaliasoption", options),
155 "option alias path test failed\n");
156 of_node_put(np);
157
158 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
159 &options);
160 unittest(np && !strcmp("test/alias/option", options),
161 "option alias path test, subcase #1 failed\n");
162 of_node_put(np);
163
164 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
165 unittest(np, "NULL option alias path test failed\n");
166 of_node_put(np);
167
168 options = "testoption";
169 np = of_find_node_opts_by_path("testcase-alias", &options);
170 unittest(np && !options, "option clearing test failed\n");
171 of_node_put(np);
172
173 options = "testoption";
174 np = of_find_node_opts_by_path("/", &options);
175 unittest(np && !options, "option clearing root node test failed\n");
176 of_node_put(np);
177}
178
179static void __init of_unittest_dynamic(void)
180{
181 struct device_node *np;
182 struct property *prop;
183
184 np = of_find_node_by_path("/testcase-data");
185 if (!np) {
186 pr_err("missing testcase data\n");
187 return;
188 }
189
190 /* Array of 4 properties for the purpose of testing */
191 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
192 if (!prop) {
193 unittest(0, "kzalloc() failed\n");
194 return;
195 }
196
197 /* Add a new property - should pass*/
198 prop->name = "new-property";
199 prop->value = "new-property-data";
200 prop->length = strlen(prop->value) + 1;
201 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
202
203 /* Try to add an existing property - should fail */
204 prop++;
205 prop->name = "new-property";
206 prop->value = "new-property-data-should-fail";
207 prop->length = strlen(prop->value) + 1;
208 unittest(of_add_property(np, prop) != 0,
209 "Adding an existing property should have failed\n");
210
211 /* Try to modify an existing property - should pass */
212 prop->value = "modify-property-data-should-pass";
213 prop->length = strlen(prop->value) + 1;
214 unittest(of_update_property(np, prop) == 0,
215 "Updating an existing property should have passed\n");
216
217 /* Try to modify non-existent property - should pass*/
218 prop++;
219 prop->name = "modify-property";
220 prop->value = "modify-missing-property-data-should-pass";
221 prop->length = strlen(prop->value) + 1;
222 unittest(of_update_property(np, prop) == 0,
223 "Updating a missing property should have passed\n");
224
225 /* Remove property - should pass */
226 unittest(of_remove_property(np, prop) == 0,
227 "Removing a property should have passed\n");
228
229 /* Adding very large property - should pass */
230 prop++;
231 prop->name = "large-property-PAGE_SIZEx8";
232 prop->length = PAGE_SIZE * 8;
233 prop->value = kzalloc(prop->length, GFP_KERNEL);
234 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
235 if (prop->value)
236 unittest(of_add_property(np, prop) == 0,
237 "Adding a large property should have passed\n");
238}
239
240static int __init of_unittest_check_node_linkage(struct device_node *np)
241{
242 int count = 0, rc;
243
244 for_each_child_of_node_scoped(np, child) {
245 if (child->parent != np) {
246 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
247 child, np);
248 return -EINVAL;
249 }
250
251 rc = of_unittest_check_node_linkage(child);
252 if (rc < 0)
253 return rc;
254 count += rc;
255 }
256
257 return count + 1;
258}
259
260static void __init of_unittest_check_tree_linkage(void)
261{
262 struct device_node *np;
263 int allnode_count = 0, child_count;
264
265 if (!of_root)
266 return;
267
268 for_each_of_allnodes(np)
269 allnode_count++;
270 child_count = of_unittest_check_node_linkage(of_root);
271
272 unittest(child_count > 0, "Device node data structure is corrupted\n");
273 unittest(child_count == allnode_count,
274 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
275 allnode_count, child_count);
276 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
277}
278
279static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
280 const char *expected)
281{
282 unsigned char *buf;
283 int buf_size;
284 int size, i;
285
286 buf_size = strlen(expected) + 10;
287 buf = kmalloc(buf_size, GFP_KERNEL);
288 if (!buf)
289 return;
290
291 /* Baseline; check conversion with a large size limit */
292 memset(buf, 0xff, buf_size);
293 size = snprintf(buf, buf_size - 2, fmt, np);
294
295 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
296 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
297 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
298 fmt, expected, buf);
299
300 /* Make sure length limits work */
301 size++;
302 for (i = 0; i < 2; i++, size--) {
303 /* Clear the buffer, and make sure it works correctly still */
304 memset(buf, 0xff, buf_size);
305 snprintf(buf, size+1, fmt, np);
306 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
307 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
308 size, fmt, expected, buf);
309 }
310 kfree(buf);
311}
312
313static void __init of_unittest_printf(void)
314{
315 struct device_node *np;
316 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
317 char phandle_str[16] = "";
318
319 np = of_find_node_by_path(full_name);
320 if (!np) {
321 unittest(np, "testcase data missing\n");
322 return;
323 }
324
325 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
326
327 of_unittest_printf_one(np, "%pOF", full_name);
328 of_unittest_printf_one(np, "%pOFf", full_name);
329 of_unittest_printf_one(np, "%pOFn", "dev");
330 of_unittest_printf_one(np, "%2pOFn", "dev");
331 of_unittest_printf_one(np, "%5pOFn", " dev");
332 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
333 of_unittest_printf_one(np, "%pOFp", phandle_str);
334 of_unittest_printf_one(np, "%pOFP", "dev@100");
335 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
336 of_unittest_printf_one(np, "%10pOFP", " dev@100");
337 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
338 of_unittest_printf_one(of_root, "%pOFP", "/");
339 of_unittest_printf_one(np, "%pOFF", "----");
340 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
341 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
342 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
343 of_unittest_printf_one(np, "%pOFC",
344 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
345}
346
347struct node_hash {
348 struct hlist_node node;
349 struct device_node *np;
350};
351
352static DEFINE_HASHTABLE(phandle_ht, 8);
353static void __init of_unittest_check_phandles(void)
354{
355 struct device_node *np;
356 struct node_hash *nh;
357 struct hlist_node *tmp;
358 int i, dup_count = 0, phandle_count = 0;
359
360 for_each_of_allnodes(np) {
361 if (!np->phandle)
362 continue;
363
364 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
365 if (nh->np->phandle == np->phandle) {
366 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
367 np->phandle, nh->np, np);
368 dup_count++;
369 break;
370 }
371 }
372
373 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
374 if (!nh)
375 return;
376
377 nh->np = np;
378 hash_add(phandle_ht, &nh->node, np->phandle);
379 phandle_count++;
380 }
381 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
382 dup_count, phandle_count);
383
384 /* Clean up */
385 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
386 hash_del(&nh->node);
387 kfree(nh);
388 }
389}
390
391static void __init of_unittest_parse_phandle_with_args(void)
392{
393 struct device_node *np;
394 struct of_phandle_args args;
395 int i, rc;
396
397 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
398 if (!np) {
399 pr_err("missing testcase data\n");
400 return;
401 }
402
403 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
404 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
405
406 for (i = 0; i < 8; i++) {
407 bool passed = true;
408
409 memset(&args, 0, sizeof(args));
410 rc = of_parse_phandle_with_args(np, "phandle-list",
411 "#phandle-cells", i, &args);
412
413 /* Test the values from tests-phandle.dtsi */
414 switch (i) {
415 case 0:
416 passed &= !rc;
417 passed &= (args.args_count == 1);
418 passed &= (args.args[0] == (i + 1));
419 break;
420 case 1:
421 passed &= !rc;
422 passed &= (args.args_count == 2);
423 passed &= (args.args[0] == (i + 1));
424 passed &= (args.args[1] == 0);
425 break;
426 case 2:
427 passed &= (rc == -ENOENT);
428 break;
429 case 3:
430 passed &= !rc;
431 passed &= (args.args_count == 3);
432 passed &= (args.args[0] == (i + 1));
433 passed &= (args.args[1] == 4);
434 passed &= (args.args[2] == 3);
435 break;
436 case 4:
437 passed &= !rc;
438 passed &= (args.args_count == 2);
439 passed &= (args.args[0] == (i + 1));
440 passed &= (args.args[1] == 100);
441 break;
442 case 5:
443 passed &= !rc;
444 passed &= (args.args_count == 0);
445 break;
446 case 6:
447 passed &= !rc;
448 passed &= (args.args_count == 1);
449 passed &= (args.args[0] == (i + 1));
450 break;
451 case 7:
452 passed &= (rc == -ENOENT);
453 break;
454 default:
455 passed = false;
456 }
457
458 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
459 i, args.np, rc);
460
461 if (rc == 0)
462 of_node_put(args.np);
463 }
464
465 /* Check for missing list property */
466 memset(&args, 0, sizeof(args));
467 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
468 "#phandle-cells", 0, &args);
469 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
470 rc = of_count_phandle_with_args(np, "phandle-list-missing",
471 "#phandle-cells");
472 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
473
474 /* Check for missing cells property */
475 memset(&args, 0, sizeof(args));
476
477 EXPECT_BEGIN(KERN_INFO,
478 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
479
480 rc = of_parse_phandle_with_args(np, "phandle-list",
481 "#phandle-cells-missing", 0, &args);
482
483 EXPECT_END(KERN_INFO,
484 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
485
486 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
487
488 EXPECT_BEGIN(KERN_INFO,
489 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
490
491 rc = of_count_phandle_with_args(np, "phandle-list",
492 "#phandle-cells-missing");
493
494 EXPECT_END(KERN_INFO,
495 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
496
497 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
498
499 /* Check for bad phandle in list */
500 memset(&args, 0, sizeof(args));
501
502 EXPECT_BEGIN(KERN_INFO,
503 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
504
505 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
506 "#phandle-cells", 0, &args);
507
508 EXPECT_END(KERN_INFO,
509 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
510
511 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
512
513 EXPECT_BEGIN(KERN_INFO,
514 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
515
516 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
517 "#phandle-cells");
518
519 EXPECT_END(KERN_INFO,
520 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
521
522 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
523
524 /* Check for incorrectly formed argument list */
525 memset(&args, 0, sizeof(args));
526
527 EXPECT_BEGIN(KERN_INFO,
528 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
529
530 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
531 "#phandle-cells", 1, &args);
532
533 EXPECT_END(KERN_INFO,
534 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
535
536 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
537
538 EXPECT_BEGIN(KERN_INFO,
539 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
540
541 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
542 "#phandle-cells");
543
544 EXPECT_END(KERN_INFO,
545 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
546
547 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
548}
549
550static void __init of_unittest_parse_phandle_with_args_map(void)
551{
552 struct device_node *np, *p[6] = {};
553 struct of_phandle_args args;
554 unsigned int prefs[6];
555 int i, rc;
556
557 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
558 if (!np) {
559 pr_err("missing testcase data\n");
560 return;
561 }
562
563 p[0] = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
564 p[1] = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
565 p[2] = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
566 p[3] = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
567 p[4] = of_find_node_by_path("/testcase-data/phandle-tests/provider4");
568 p[5] = of_find_node_by_path("/testcase-data/phandle-tests/provider5");
569 for (i = 0; i < ARRAY_SIZE(p); ++i) {
570 if (!p[i]) {
571 pr_err("missing testcase data\n");
572 return;
573 }
574 prefs[i] = OF_KREF_READ(p[i]);
575 }
576
577 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
578 unittest(rc == 8, "of_count_phandle_with_args() returned %i, expected 8\n", rc);
579
580 for (i = 0; i < 9; i++) {
581 bool passed = true;
582
583 memset(&args, 0, sizeof(args));
584 rc = of_parse_phandle_with_args_map(np, "phandle-list",
585 "phandle", i, &args);
586
587 /* Test the values from tests-phandle.dtsi */
588 switch (i) {
589 case 0:
590 passed &= !rc;
591 passed &= (args.np == p[1]);
592 passed &= (args.args_count == 1);
593 passed &= (args.args[0] == 1);
594 break;
595 case 1:
596 passed &= !rc;
597 passed &= (args.np == p[3]);
598 passed &= (args.args_count == 3);
599 passed &= (args.args[0] == 2);
600 passed &= (args.args[1] == 5);
601 passed &= (args.args[2] == 3);
602 break;
603 case 2:
604 passed &= (rc == -ENOENT);
605 break;
606 case 3:
607 passed &= !rc;
608 passed &= (args.np == p[0]);
609 passed &= (args.args_count == 0);
610 break;
611 case 4:
612 passed &= !rc;
613 passed &= (args.np == p[1]);
614 passed &= (args.args_count == 1);
615 passed &= (args.args[0] == 3);
616 break;
617 case 5:
618 passed &= !rc;
619 passed &= (args.np == p[0]);
620 passed &= (args.args_count == 0);
621 break;
622 case 6:
623 passed &= !rc;
624 passed &= (args.np == p[2]);
625 passed &= (args.args_count == 2);
626 passed &= (args.args[0] == 15);
627 passed &= (args.args[1] == 0x20);
628 break;
629 case 7:
630 passed &= !rc;
631 passed &= (args.np == p[3]);
632 passed &= (args.args_count == 3);
633 passed &= (args.args[0] == 2);
634 passed &= (args.args[1] == 5);
635 passed &= (args.args[2] == 3);
636 break;
637 case 8:
638 passed &= (rc == -ENOENT);
639 break;
640 default:
641 passed = false;
642 }
643
644 unittest(passed, "index %i - data error on node %s rc=%i\n",
645 i, args.np->full_name, rc);
646
647 if (rc == 0)
648 of_node_put(args.np);
649 }
650
651 /* Check for missing list property */
652 memset(&args, 0, sizeof(args));
653 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
654 "phandle", 0, &args);
655 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
656
657 /* Check for missing cells,map,mask property */
658 memset(&args, 0, sizeof(args));
659
660 EXPECT_BEGIN(KERN_INFO,
661 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
662
663 rc = of_parse_phandle_with_args_map(np, "phandle-list",
664 "phandle-missing", 0, &args);
665 EXPECT_END(KERN_INFO,
666 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
667
668 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
669
670 /* Check for bad phandle in list */
671 memset(&args, 0, sizeof(args));
672
673 EXPECT_BEGIN(KERN_INFO,
674 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");
675
676 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
677 "phandle", 0, &args);
678 EXPECT_END(KERN_INFO,
679 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");
680
681 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
682
683 /* Check for incorrectly formed argument list */
684 memset(&args, 0, sizeof(args));
685
686 EXPECT_BEGIN(KERN_INFO,
687 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1");
688
689 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
690 "phandle", 1, &args);
691 EXPECT_END(KERN_INFO,
692 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1");
693
694 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
695
696 for (i = 0; i < ARRAY_SIZE(p); ++i) {
697 unittest(prefs[i] == OF_KREF_READ(p[i]),
698 "provider%d: expected:%d got:%d\n",
699 i, prefs[i], OF_KREF_READ(p[i]));
700 of_node_put(p[i]);
701 }
702}
703
704static void __init of_unittest_property_string(void)
705{
706 const char *strings[4];
707 struct device_node *np;
708 int rc;
709
710 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
711 if (!np) {
712 pr_err("No testcase data in device tree\n");
713 return;
714 }
715
716 rc = of_property_match_string(np, "phandle-list-names", "first");
717 unittest(rc == 0, "first expected:0 got:%i\n", rc);
718 rc = of_property_match_string(np, "phandle-list-names", "second");
719 unittest(rc == 1, "second expected:1 got:%i\n", rc);
720 rc = of_property_match_string(np, "phandle-list-names", "third");
721 unittest(rc == 2, "third expected:2 got:%i\n", rc);
722 rc = of_property_match_string(np, "phandle-list-names", "fourth");
723 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
724 rc = of_property_match_string(np, "missing-property", "blah");
725 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
726 rc = of_property_match_string(np, "empty-property", "blah");
727 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
728 rc = of_property_match_string(np, "unterminated-string", "blah");
729 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
730
731 /* of_property_count_strings() tests */
732 rc = of_property_count_strings(np, "string-property");
733 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
734 rc = of_property_count_strings(np, "phandle-list-names");
735 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
736 rc = of_property_count_strings(np, "unterminated-string");
737 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
738 rc = of_property_count_strings(np, "unterminated-string-list");
739 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
740
741 /* of_property_read_string_index() tests */
742 rc = of_property_read_string_index(np, "string-property", 0, strings);
743 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
744 strings[0] = NULL;
745 rc = of_property_read_string_index(np, "string-property", 1, strings);
746 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
747 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
748 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
749 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
750 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
751 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
752 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
753 strings[0] = NULL;
754 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
755 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
756 strings[0] = NULL;
757 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
758 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
759 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
760 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
761 strings[0] = NULL;
762 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
763 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
764 strings[1] = NULL;
765
766 /* of_property_read_string_array() tests */
767 rc = of_property_read_string_array(np, "string-property", strings, 4);
768 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
769 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
770 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
771 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
772 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
773 /* -- An incorrectly formed string should cause a failure */
774 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
775 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
776 /* -- parsing the correctly formed strings should still work: */
777 strings[2] = NULL;
778 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
779 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
780 strings[1] = NULL;
781 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
782 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
783}
784
785#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
786 (p1)->value && (p2)->value && \
787 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
788 !strcmp((p1)->name, (p2)->name))
789static void __init of_unittest_property_copy(void)
790{
791#ifdef CONFIG_OF_DYNAMIC
792 struct property p1 = { .name = "p1", .length = 0, .value = "" };
793 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
794 struct property *new;
795
796 new = __of_prop_dup(&p1, GFP_KERNEL);
797 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
798 kfree(new->value);
799 kfree(new->name);
800 kfree(new);
801
802 new = __of_prop_dup(&p2, GFP_KERNEL);
803 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
804 kfree(new->value);
805 kfree(new->name);
806 kfree(new);
807#endif
808}
809
810static void __init of_unittest_changeset(void)
811{
812#ifdef CONFIG_OF_DYNAMIC
813 int ret;
814 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
815 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
816 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
817 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
818 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
819 struct property *ppremove;
820 struct device_node *n1, *n2, *n21, *n22, *nchangeset, *nremove, *parent, *np;
821 static const char * const str_array[] = { "str1", "str2", "str3" };
822 const u32 u32_array[] = { 1, 2, 3 };
823 struct of_changeset chgset;
824 const char *propstr = NULL;
825
826 n1 = __of_node_dup(NULL, "n1");
827 unittest(n1, "testcase setup failure\n");
828
829 n2 = __of_node_dup(NULL, "n2");
830 unittest(n2, "testcase setup failure\n");
831
832 n21 = __of_node_dup(NULL, "n21");
833 unittest(n21, "testcase setup failure %p\n", n21);
834
835 nchangeset = of_find_node_by_path("/testcase-data/changeset");
836 nremove = of_get_child_by_name(nchangeset, "node-remove");
837 unittest(nremove, "testcase setup failure\n");
838
839 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
840 unittest(ppadd, "testcase setup failure\n");
841
842 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
843 unittest(ppname_n1, "testcase setup failure\n");
844
845 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
846 unittest(ppname_n2, "testcase setup failure\n");
847
848 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
849 unittest(ppname_n21, "testcase setup failure\n");
850
851 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
852 unittest(ppupdate, "testcase setup failure\n");
853
854 parent = nchangeset;
855 n1->parent = parent;
856 n2->parent = parent;
857 n21->parent = n2;
858
859 ppremove = of_find_property(parent, "prop-remove", NULL);
860 unittest(ppremove, "failed to find removal prop");
861
862 of_changeset_init(&chgset);
863
864 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
865 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
866
867 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
868 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
869
870 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
871 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
872
873 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
874
875 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
876 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
877 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
878 n22 = of_changeset_create_node(&chgset, n2, "n22");
879 unittest(n22, "fail create n22\n");
880 unittest(!of_changeset_add_prop_string(&chgset, n22, "prop-str", "abcd"),
881 "fail add prop prop-str");
882 unittest(!of_changeset_add_prop_string_array(&chgset, n22, "prop-str-array",
883 (const char **)str_array,
884 ARRAY_SIZE(str_array)),
885 "fail add prop prop-str-array");
886 unittest(!of_changeset_add_prop_u32_array(&chgset, n22, "prop-u32-array",
887 u32_array, ARRAY_SIZE(u32_array)),
888 "fail add prop prop-u32-array");
889
890 unittest(!of_changeset_apply(&chgset), "apply failed\n");
891
892 of_node_put(nchangeset);
893
894 /* Make sure node names are constructed correctly */
895 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
896 "'%pOF' not added\n", n21);
897 of_node_put(np);
898 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22")),
899 "'%pOF' not added\n", n22);
900 of_node_put(np);
901
902 unittest(!of_changeset_revert(&chgset), "revert failed\n");
903
904 unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21"),
905 "'%pOF' still present after revert\n", n21);
906
907 ppremove = of_find_property(parent, "prop-remove", NULL);
908 unittest(ppremove, "failed to find removed prop after revert\n");
909
910 ret = of_property_read_string(parent, "prop-update", &propstr);
911 unittest(!ret, "failed to find updated prop after revert\n");
912 if (!ret)
913 unittest(strcmp(propstr, "hello") == 0, "original value not in updated property after revert");
914
915 of_changeset_destroy(&chgset);
916
917 of_node_put(n1);
918 of_node_put(n2);
919 of_node_put(n21);
920 of_node_put(n22);
921#endif
922}
923
924static void __init of_unittest_dma_get_max_cpu_address(void)
925{
926 struct device_node *np;
927 phys_addr_t cpu_addr;
928
929 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
930 return;
931
932 np = of_find_node_by_path("/testcase-data/address-tests");
933 if (!np) {
934 pr_err("missing testcase data\n");
935 return;
936 }
937
938 cpu_addr = of_dma_get_max_cpu_address(np);
939 unittest(cpu_addr == 0x4fffffff,
940 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
941 &cpu_addr, 0x4fffffff);
942}
943
944static void __init of_unittest_dma_ranges_one(const char *path,
945 u64 expect_dma_addr, u64 expect_paddr)
946{
947#ifdef CONFIG_HAS_DMA
948 struct device_node *np;
949 const struct bus_dma_region *map = NULL;
950 int rc;
951
952 np = of_find_node_by_path(path);
953 if (!np) {
954 pr_err("missing testcase data\n");
955 return;
956 }
957
958 rc = of_dma_get_range(np, &map);
959
960 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
961
962 if (!rc) {
963 phys_addr_t paddr;
964 dma_addr_t dma_addr;
965 struct device *dev_bogus;
966
967 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL);
968 if (!dev_bogus) {
969 unittest(0, "kzalloc() failed\n");
970 kfree(map);
971 return;
972 }
973
974 dev_bogus->dma_range_map = map;
975 paddr = dma_to_phys(dev_bogus, expect_dma_addr);
976 dma_addr = phys_to_dma(dev_bogus, expect_paddr);
977
978 unittest(paddr == expect_paddr,
979 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
980 &paddr, expect_paddr, np);
981 unittest(dma_addr == expect_dma_addr,
982 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
983 &dma_addr, expect_dma_addr, np);
984
985 kfree(map);
986 kfree(dev_bogus);
987 }
988 of_node_put(np);
989#endif
990}
991
992static void __init of_unittest_parse_dma_ranges(void)
993{
994 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
995 0x0, 0x20000000);
996 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
997 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
998 0x100000000, 0x20000000);
999 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
1000 0x80000000, 0x20000000);
1001}
1002
1003static void __init of_unittest_pci_dma_ranges(void)
1004{
1005 struct device_node *np;
1006 struct of_pci_range range;
1007 struct of_pci_range_parser parser;
1008 int i = 0;
1009
1010 if (!IS_ENABLED(CONFIG_PCI))
1011 return;
1012
1013 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
1014 if (!np) {
1015 pr_err("missing testcase data\n");
1016 return;
1017 }
1018
1019 if (of_pci_dma_range_parser_init(&parser, np)) {
1020 pr_err("missing dma-ranges property\n");
1021 return;
1022 }
1023
1024 /*
1025 * Get the dma-ranges from the device tree
1026 */
1027 for_each_of_pci_range(&parser, &range) {
1028 if (!i) {
1029 unittest(range.size == 0x10000000,
1030 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
1031 np, range.size);
1032 unittest(range.cpu_addr == 0x20000000,
1033 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
1034 range.cpu_addr, np);
1035 unittest(range.pci_addr == 0x80000000,
1036 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
1037 range.pci_addr, np);
1038 } else {
1039 unittest(range.size == 0x10000000,
1040 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
1041 np, range.size);
1042 unittest(range.cpu_addr == 0x40000000,
1043 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
1044 range.cpu_addr, np);
1045 unittest(range.pci_addr == 0xc0000000,
1046 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
1047 range.pci_addr, np);
1048 }
1049 i++;
1050 }
1051
1052 of_node_put(np);
1053}
1054
1055static void __init of_unittest_bus_ranges(void)
1056{
1057 struct device_node *np;
1058 struct of_range range;
1059 struct of_range_parser parser;
1060 struct resource res;
1061 int ret, count, i = 0;
1062
1063 np = of_find_node_by_path("/testcase-data/address-tests");
1064 if (!np) {
1065 pr_err("missing testcase data\n");
1066 return;
1067 }
1068
1069 if (of_range_parser_init(&parser, np)) {
1070 pr_err("missing ranges property\n");
1071 return;
1072 }
1073
1074 ret = of_range_to_resource(np, 1, &res);
1075 unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n",
1076 ret, np);
1077 unittest(resource_type(&res) == IORESOURCE_MEM,
1078 "of_range_to_resource wrong resource type on node %pOF res=%pR\n",
1079 np, &res);
1080 unittest(res.start == 0xd0000000,
1081 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1082 np, &res);
1083 unittest(resource_size(&res) == 0x20000000,
1084 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1085 np, &res);
1086
1087 count = of_range_count(&parser);
1088 unittest(count == 2,
1089 "of_range_count wrong size on node %pOF count=%d\n",
1090 np, count);
1091
1092 /*
1093 * Get the "ranges" from the device tree
1094 */
1095 for_each_of_range(&parser, &range) {
1096 unittest(range.flags == IORESOURCE_MEM,
1097 "for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n",
1098 np, range.flags, IORESOURCE_MEM);
1099 if (!i) {
1100 unittest(range.size == 0x50000000,
1101 "for_each_of_range wrong size on node %pOF size=%llx\n",
1102 np, range.size);
1103 unittest(range.cpu_addr == 0x70000000,
1104 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1105 range.cpu_addr, np);
1106 unittest(range.bus_addr == 0x70000000,
1107 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1108 range.pci_addr, np);
1109 } else {
1110 unittest(range.size == 0x20000000,
1111 "for_each_of_range wrong size on node %pOF size=%llx\n",
1112 np, range.size);
1113 unittest(range.cpu_addr == 0xd0000000,
1114 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1115 range.cpu_addr, np);
1116 unittest(range.bus_addr == 0x00000000,
1117 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1118 range.pci_addr, np);
1119 }
1120 i++;
1121 }
1122
1123 of_node_put(np);
1124}
1125
1126static void __init of_unittest_bus_3cell_ranges(void)
1127{
1128 struct device_node *np;
1129 struct of_range range;
1130 struct of_range_parser parser;
1131 int i = 0;
1132
1133 np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000");
1134 if (!np) {
1135 pr_err("missing testcase data\n");
1136 return;
1137 }
1138
1139 if (of_range_parser_init(&parser, np)) {
1140 pr_err("missing ranges property\n");
1141 return;
1142 }
1143
1144 /*
1145 * Get the "ranges" from the device tree
1146 */
1147 for_each_of_range(&parser, &range) {
1148 if (!i) {
1149 unittest(range.flags == 0xf00baa,
1150 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1151 np, range.flags);
1152 unittest(range.size == 0x100000,
1153 "for_each_of_range wrong size on node %pOF size=%llx\n",
1154 np, range.size);
1155 unittest(range.cpu_addr == 0xa0000000,
1156 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1157 range.cpu_addr, np);
1158 unittest(range.bus_addr == 0x0,
1159 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1160 range.pci_addr, np);
1161 } else {
1162 unittest(range.flags == 0xf00bee,
1163 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1164 np, range.flags);
1165 unittest(range.size == 0x200000,
1166 "for_each_of_range wrong size on node %pOF size=%llx\n",
1167 np, range.size);
1168 unittest(range.cpu_addr == 0xb0000000,
1169 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
1170 range.cpu_addr, np);
1171 unittest(range.bus_addr == 0x100000000,
1172 "for_each_of_range wrong bus addr (%llx) on node %pOF",
1173 range.pci_addr, np);
1174 }
1175 i++;
1176 }
1177
1178 of_node_put(np);
1179}
1180
1181static void __init of_unittest_reg(void)
1182{
1183 struct device_node *np;
1184 int ret;
1185 u64 addr, size;
1186
1187 np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000");
1188 if (!np) {
1189 pr_err("missing testcase data\n");
1190 return;
1191 }
1192
1193 ret = of_property_read_reg(np, 0, &addr, &size);
1194 unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n",
1195 np, ret);
1196 unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n",
1197 np, addr);
1198
1199 of_node_put(np);
1200}
1201
1202struct of_unittest_expected_res {
1203 int index;
1204 struct resource res;
1205};
1206
1207static void __init of_unittest_check_addr(const char *node_path,
1208 const struct of_unittest_expected_res *tab_exp,
1209 unsigned int tab_exp_count)
1210{
1211 const struct of_unittest_expected_res *expected;
1212 struct device_node *np;
1213 struct resource res;
1214 unsigned int count;
1215 int ret;
1216
1217 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
1218 return;
1219
1220 np = of_find_node_by_path(node_path);
1221 if (!np) {
1222 pr_err("missing testcase data (%s)\n", node_path);
1223 return;
1224 }
1225
1226 expected = tab_exp;
1227 count = tab_exp_count;
1228 while (count--) {
1229 ret = of_address_to_resource(np, expected->index, &res);
1230 unittest(!ret, "of_address_to_resource(%pOF, %d) returned error %d\n",
1231 np, expected->index, ret);
1232 unittest(resource_type(&res) == resource_type(&expected->res) &&
1233 res.start == expected->res.start &&
1234 resource_size(&res) == resource_size(&expected->res),
1235 "of_address_to_resource(%pOF, %d) wrong resource %pR, expected %pR\n",
1236 np, expected->index, &res, &expected->res);
1237 expected++;
1238 }
1239
1240 of_node_put(np);
1241}
1242
1243static const struct of_unittest_expected_res of_unittest_reg_2cell_expected_res[] = {
1244 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) },
1245 {.index = 1, .res = DEFINE_RES_MEM(0xa0a02000, 0x100) },
1246 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) },
1247 {.index = 3, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) },
1248};
1249
1250static const struct of_unittest_expected_res of_unittest_reg_3cell_expected_res[] = {
1251 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) },
1252 {.index = 1, .res = DEFINE_RES_MEM(0xa0b02000, 0x100) },
1253 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) },
1254 {.index = 3, .res = DEFINE_RES_MEM(0xc0c09000, 0x100) },
1255 {.index = 4, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) },
1256};
1257
1258static const struct of_unittest_expected_res of_unittest_reg_pci_expected_res[] = {
1259 {.index = 0, .res = DEFINE_RES_MEM(0xe8001000, 0x1000) },
1260 {.index = 1, .res = DEFINE_RES_MEM(0xea002000, 0x2000) },
1261};
1262
1263static void __init of_unittest_translate_addr(void)
1264{
1265 of_unittest_check_addr("/testcase-data/address-tests2/bus-2cell@10000000/device@100000",
1266 of_unittest_reg_2cell_expected_res,
1267 ARRAY_SIZE(of_unittest_reg_2cell_expected_res));
1268
1269 of_unittest_check_addr("/testcase-data/address-tests2/bus-3cell@20000000/local-bus@100000/device@f1001000",
1270 of_unittest_reg_3cell_expected_res,
1271 ARRAY_SIZE(of_unittest_reg_3cell_expected_res));
1272
1273 of_unittest_check_addr("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0/dev@e0000000",
1274 of_unittest_reg_pci_expected_res,
1275 ARRAY_SIZE(of_unittest_reg_pci_expected_res));
1276}
1277
1278static void __init of_unittest_parse_interrupts(void)
1279{
1280 struct device_node *np;
1281 struct of_phandle_args args;
1282 int i, rc;
1283
1284 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1285 return;
1286
1287 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1288 if (!np) {
1289 pr_err("missing testcase data\n");
1290 return;
1291 }
1292
1293 for (i = 0; i < 4; i++) {
1294 bool passed = true;
1295
1296 memset(&args, 0, sizeof(args));
1297 rc = of_irq_parse_one(np, i, &args);
1298
1299 passed &= !rc;
1300 passed &= (args.args_count == 1);
1301 passed &= (args.args[0] == (i + 1));
1302
1303 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1304 i, args.np, rc);
1305 }
1306 of_node_put(np);
1307
1308 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1309 if (!np) {
1310 pr_err("missing testcase data\n");
1311 return;
1312 }
1313
1314 for (i = 0; i < 4; i++) {
1315 bool passed = true;
1316
1317 memset(&args, 0, sizeof(args));
1318 rc = of_irq_parse_one(np, i, &args);
1319
1320 /* Test the values from tests-phandle.dtsi */
1321 switch (i) {
1322 case 0:
1323 passed &= !rc;
1324 passed &= (args.args_count == 1);
1325 passed &= (args.args[0] == 9);
1326 break;
1327 case 1:
1328 passed &= !rc;
1329 passed &= (args.args_count == 3);
1330 passed &= (args.args[0] == 10);
1331 passed &= (args.args[1] == 11);
1332 passed &= (args.args[2] == 12);
1333 break;
1334 case 2:
1335 passed &= !rc;
1336 passed &= (args.args_count == 2);
1337 passed &= (args.args[0] == 13);
1338 passed &= (args.args[1] == 14);
1339 break;
1340 case 3:
1341 passed &= !rc;
1342 passed &= (args.args_count == 2);
1343 passed &= (args.args[0] == 15);
1344 passed &= (args.args[1] == 16);
1345 break;
1346 default:
1347 passed = false;
1348 }
1349 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1350 i, args.np, rc);
1351 }
1352 of_node_put(np);
1353}
1354
1355static void __init of_unittest_parse_interrupts_extended(void)
1356{
1357 struct device_node *np;
1358 struct of_phandle_args args;
1359 int i, rc;
1360
1361 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1362 return;
1363
1364 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1365 if (!np) {
1366 pr_err("missing testcase data\n");
1367 return;
1368 }
1369
1370 for (i = 0; i < 7; i++) {
1371 bool passed = true;
1372
1373 memset(&args, 0, sizeof(args));
1374 rc = of_irq_parse_one(np, i, &args);
1375
1376 /* Test the values from tests-phandle.dtsi */
1377 switch (i) {
1378 case 0:
1379 passed &= !rc;
1380 passed &= (args.args_count == 1);
1381 passed &= (args.args[0] == 1);
1382 break;
1383 case 1:
1384 passed &= !rc;
1385 passed &= (args.args_count == 3);
1386 passed &= (args.args[0] == 2);
1387 passed &= (args.args[1] == 3);
1388 passed &= (args.args[2] == 4);
1389 break;
1390 case 2:
1391 passed &= !rc;
1392 passed &= (args.args_count == 2);
1393 passed &= (args.args[0] == 5);
1394 passed &= (args.args[1] == 6);
1395 break;
1396 case 3:
1397 passed &= !rc;
1398 passed &= (args.args_count == 1);
1399 passed &= (args.args[0] == 9);
1400 break;
1401 case 4:
1402 passed &= !rc;
1403 passed &= (args.args_count == 3);
1404 passed &= (args.args[0] == 10);
1405 passed &= (args.args[1] == 11);
1406 passed &= (args.args[2] == 12);
1407 break;
1408 case 5:
1409 passed &= !rc;
1410 passed &= (args.args_count == 2);
1411 passed &= (args.args[0] == 13);
1412 passed &= (args.args[1] == 14);
1413 break;
1414 case 6:
1415 /*
1416 * Tests child node that is missing property
1417 * #address-cells. See the comments in
1418 * drivers/of/unittest-data/tests-interrupts.dtsi
1419 * nodes intmap1 and interrupts-extended0
1420 */
1421 passed &= !rc;
1422 passed &= (args.args_count == 1);
1423 passed &= (args.args[0] == 15);
1424 break;
1425 default:
1426 passed = false;
1427 }
1428
1429 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1430 i, args.np, rc);
1431 }
1432 of_node_put(np);
1433}
1434
1435static const struct of_device_id match_node_table[] = {
1436 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1437 { .data = "B", .type = "type1", }, /* followed by type alone */
1438
1439 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1440 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1441 { .data = "Cc", .name = "name2", .type = "type2", },
1442
1443 { .data = "E", .compatible = "compat3" },
1444 { .data = "G", .compatible = "compat2", },
1445 { .data = "H", .compatible = "compat2", .name = "name5", },
1446 { .data = "I", .compatible = "compat2", .type = "type1", },
1447 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1448 { .data = "K", .compatible = "compat2", .name = "name9", },
1449 {}
1450};
1451
1452static struct {
1453 const char *path;
1454 const char *data;
1455} match_node_tests[] = {
1456 { .path = "/testcase-data/match-node/name0", .data = "A", },
1457 { .path = "/testcase-data/match-node/name1", .data = "B", },
1458 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1459 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1460 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1461 { .path = "/testcase-data/match-node/name3", .data = "E", },
1462 { .path = "/testcase-data/match-node/name4", .data = "G", },
1463 { .path = "/testcase-data/match-node/name5", .data = "H", },
1464 { .path = "/testcase-data/match-node/name6", .data = "G", },
1465 { .path = "/testcase-data/match-node/name7", .data = "I", },
1466 { .path = "/testcase-data/match-node/name8", .data = "J", },
1467 { .path = "/testcase-data/match-node/name9", .data = "K", },
1468};
1469
1470static void __init of_unittest_match_node(void)
1471{
1472 struct device_node *np;
1473 const struct of_device_id *match;
1474 int i;
1475
1476 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1477 np = of_find_node_by_path(match_node_tests[i].path);
1478 if (!np) {
1479 unittest(0, "missing testcase node %s\n",
1480 match_node_tests[i].path);
1481 continue;
1482 }
1483
1484 match = of_match_node(match_node_table, np);
1485 if (!match) {
1486 unittest(0, "%s didn't match anything\n",
1487 match_node_tests[i].path);
1488 continue;
1489 }
1490
1491 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1492 unittest(0, "%s got wrong match. expected %s, got %s\n",
1493 match_node_tests[i].path, match_node_tests[i].data,
1494 (const char *)match->data);
1495 continue;
1496 }
1497 unittest(1, "passed");
1498 }
1499}
1500
1501static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2);
1502static const struct platform_device_info test_bus_info = {
1503 .name = "unittest-bus",
1504};
1505static void __init of_unittest_platform_populate(void)
1506{
1507 int irq, rc;
1508 struct device_node *np, *child, *grandchild;
1509 struct platform_device *pdev, *test_bus;
1510 const struct of_device_id match[] = {
1511 { .compatible = "test-device", },
1512 {}
1513 };
1514
1515 np = of_find_node_by_path("/testcase-data");
1516 of_platform_default_populate(np, NULL, NULL);
1517
1518 /* Test that a missing irq domain returns -EPROBE_DEFER */
1519 np = of_find_node_by_path("/testcase-data/testcase-device1");
1520 pdev = of_find_device_by_node(np);
1521 unittest(pdev, "device 1 creation failed\n");
1522
1523 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1524 irq = platform_get_irq(pdev, 0);
1525 unittest(irq == -EPROBE_DEFER,
1526 "device deferred probe failed - %d\n", irq);
1527
1528 /* Test that a parsing failure does not return -EPROBE_DEFER */
1529 np = of_find_node_by_path("/testcase-data/testcase-device2");
1530 pdev = of_find_device_by_node(np);
1531 unittest(pdev, "device 2 creation failed\n");
1532
1533 EXPECT_BEGIN(KERN_INFO,
1534 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1535
1536 irq = platform_get_irq(pdev, 0);
1537
1538 EXPECT_END(KERN_INFO,
1539 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1540
1541 unittest(irq < 0 && irq != -EPROBE_DEFER,
1542 "device parsing error failed - %d\n", irq);
1543 }
1544
1545 np = of_find_node_by_path("/testcase-data/platform-tests");
1546 unittest(np, "No testcase data in device tree\n");
1547 if (!np)
1548 return;
1549
1550 test_bus = platform_device_register_full(&test_bus_info);
1551 rc = PTR_ERR_OR_ZERO(test_bus);
1552 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1553 if (rc) {
1554 of_node_put(np);
1555 return;
1556 }
1557 test_bus->dev.of_node = np;
1558
1559 /*
1560 * Add a dummy resource to the test bus node after it is
1561 * registered to catch problems with un-inserted resources. The
1562 * DT code doesn't insert the resources, and it has caused the
1563 * kernel to oops in the past. This makes sure the same bug
1564 * doesn't crop up again.
1565 */
1566 platform_device_add_resources(test_bus, &test_bus_res, 1);
1567
1568 of_platform_populate(np, match, NULL, &test_bus->dev);
1569 for_each_child_of_node(np, child) {
1570 for_each_child_of_node(child, grandchild) {
1571 pdev = of_find_device_by_node(grandchild);
1572 unittest(pdev,
1573 "Could not create device for node '%pOFn'\n",
1574 grandchild);
1575 platform_device_put(pdev);
1576 }
1577 }
1578
1579 of_platform_depopulate(&test_bus->dev);
1580 for_each_child_of_node(np, child) {
1581 for_each_child_of_node(child, grandchild)
1582 unittest(!of_find_device_by_node(grandchild),
1583 "device didn't get destroyed '%pOFn'\n",
1584 grandchild);
1585 }
1586
1587 platform_device_unregister(test_bus);
1588 of_node_put(np);
1589}
1590
1591/**
1592 * update_node_properties - adds the properties
1593 * of np into dup node (present in live tree) and
1594 * updates parent of children of np to dup.
1595 *
1596 * @np: node whose properties are being added to the live tree
1597 * @dup: node present in live tree to be updated
1598 */
1599static void update_node_properties(struct device_node *np,
1600 struct device_node *dup)
1601{
1602 struct property *prop;
1603 struct property *save_next;
1604 struct device_node *child;
1605 int ret;
1606
1607 for_each_child_of_node(np, child)
1608 child->parent = dup;
1609
1610 /*
1611 * "unittest internal error: unable to add testdata property"
1612 *
1613 * If this message reports a property in node '/__symbols__' then
1614 * the respective unittest overlay contains a label that has the
1615 * same name as a label in the live devicetree. The label will
1616 * be in the live devicetree only if the devicetree source was
1617 * compiled with the '-@' option. If you encounter this error,
1618 * please consider renaming __all__ of the labels in the unittest
1619 * overlay dts files with an odd prefix that is unlikely to be
1620 * used in a real devicetree.
1621 */
1622
1623 /*
1624 * open code for_each_property_of_node() because of_add_property()
1625 * sets prop->next to NULL
1626 */
1627 for (prop = np->properties; prop != NULL; prop = save_next) {
1628 save_next = prop->next;
1629 ret = of_add_property(dup, prop);
1630 if (ret) {
1631 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1632 continue;
1633 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1634 np, prop->name);
1635 }
1636 }
1637}
1638
1639/**
1640 * attach_node_and_children - attaches nodes
1641 * and its children to live tree.
1642 * CAUTION: misleading function name - if node @np already exists in
1643 * the live tree then children of @np are *not* attached to the live
1644 * tree. This works for the current test devicetree nodes because such
1645 * nodes do not have child nodes.
1646 *
1647 * @np: Node to attach to live tree
1648 */
1649static void attach_node_and_children(struct device_node *np)
1650{
1651 struct device_node *next, *dup, *child;
1652 unsigned long flags;
1653 const char *full_name;
1654
1655 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1656 if (!full_name)
1657 return;
1658
1659 if (!strcmp(full_name, "/__local_fixups__") ||
1660 !strcmp(full_name, "/__fixups__")) {
1661 kfree(full_name);
1662 return;
1663 }
1664
1665 dup = of_find_node_by_path(full_name);
1666 kfree(full_name);
1667 if (dup) {
1668 update_node_properties(np, dup);
1669 return;
1670 }
1671
1672 child = np->child;
1673 np->child = NULL;
1674
1675 mutex_lock(&of_mutex);
1676 raw_spin_lock_irqsave(&devtree_lock, flags);
1677 np->sibling = np->parent->child;
1678 np->parent->child = np;
1679 of_node_clear_flag(np, OF_DETACHED);
1680 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1681
1682 __of_attach_node_sysfs(np);
1683 mutex_unlock(&of_mutex);
1684
1685 while (child) {
1686 next = child->sibling;
1687 attach_node_and_children(child);
1688 child = next;
1689 }
1690}
1691
1692/**
1693 * unittest_data_add - Reads, copies data from
1694 * linked tree and attaches it to the live tree
1695 */
1696static int __init unittest_data_add(void)
1697{
1698 void *unittest_data;
1699 void *unittest_data_align;
1700 struct device_node *unittest_data_node = NULL, *np;
1701 /*
1702 * __dtbo_testcases_begin[] and __dtbo_testcases_end[] are magically
1703 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
1704 */
1705 extern uint8_t __dtbo_testcases_begin[];
1706 extern uint8_t __dtbo_testcases_end[];
1707 const int size = __dtbo_testcases_end - __dtbo_testcases_begin;
1708 int rc;
1709 void *ret;
1710
1711 if (!size) {
1712 pr_warn("%s: testcases is empty\n", __func__);
1713 return -ENODATA;
1714 }
1715
1716 /* creating copy */
1717 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1718 if (!unittest_data)
1719 return -ENOMEM;
1720
1721 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1722 memcpy(unittest_data_align, __dtbo_testcases_begin, size);
1723
1724 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1725 if (!ret) {
1726 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1727 kfree(unittest_data);
1728 return -ENODATA;
1729 }
1730 if (!unittest_data_node) {
1731 pr_warn("%s: testcases tree is empty\n", __func__);
1732 kfree(unittest_data);
1733 return -ENODATA;
1734 }
1735
1736 /*
1737 * This lock normally encloses of_resolve_phandles()
1738 */
1739 of_overlay_mutex_lock();
1740
1741 rc = of_resolve_phandles(unittest_data_node);
1742 if (rc) {
1743 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1744 of_overlay_mutex_unlock();
1745 return -EINVAL;
1746 }
1747
1748 /* attach the sub-tree to live tree */
1749 if (!of_root) {
1750 pr_warn("%s: no live tree to attach sub-tree\n", __func__);
1751 kfree(unittest_data);
1752 return -ENODEV;
1753 }
1754
1755 EXPECT_BEGIN(KERN_INFO,
1756 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1757
1758 np = unittest_data_node->child;
1759 while (np) {
1760 struct device_node *next = np->sibling;
1761
1762 np->parent = of_root;
1763 /* this will clear OF_DETACHED in np and children */
1764 attach_node_and_children(np);
1765 np = next;
1766 }
1767
1768 EXPECT_END(KERN_INFO,
1769 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1770
1771 of_overlay_mutex_unlock();
1772
1773 return 0;
1774}
1775
1776#ifdef CONFIG_OF_OVERLAY
1777static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id);
1778
1779static int unittest_probe(struct platform_device *pdev)
1780{
1781 struct device *dev = &pdev->dev;
1782 struct device_node *np = dev->of_node;
1783
1784 if (np == NULL) {
1785 dev_err(dev, "No OF data for device\n");
1786 return -EINVAL;
1787
1788 }
1789
1790 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1791
1792 of_platform_populate(np, NULL, NULL, &pdev->dev);
1793
1794 return 0;
1795}
1796
1797static void unittest_remove(struct platform_device *pdev)
1798{
1799 struct device *dev = &pdev->dev;
1800 struct device_node *np = dev->of_node;
1801
1802 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1803}
1804
1805static const struct of_device_id unittest_match[] = {
1806 { .compatible = "unittest", },
1807 {},
1808};
1809
1810static struct platform_driver unittest_driver = {
1811 .probe = unittest_probe,
1812 .remove_new = unittest_remove,
1813 .driver = {
1814 .name = "unittest",
1815 .of_match_table = unittest_match,
1816 },
1817};
1818
1819/* get the platform device instantiated at the path */
1820static struct platform_device *of_path_to_platform_device(const char *path)
1821{
1822 struct device_node *np;
1823 struct platform_device *pdev;
1824
1825 np = of_find_node_by_path(path);
1826 if (np == NULL)
1827 return NULL;
1828
1829 pdev = of_find_device_by_node(np);
1830 of_node_put(np);
1831
1832 return pdev;
1833}
1834
1835/* find out if a platform device exists at that path */
1836static int of_path_platform_device_exists(const char *path)
1837{
1838 struct platform_device *pdev;
1839
1840 pdev = of_path_to_platform_device(path);
1841 platform_device_put(pdev);
1842 return pdev != NULL;
1843}
1844
1845#ifdef CONFIG_OF_GPIO
1846
1847struct unittest_gpio_dev {
1848 struct gpio_chip chip;
1849};
1850
1851static int unittest_gpio_chip_request_count;
1852static int unittest_gpio_probe_count;
1853static int unittest_gpio_probe_pass_count;
1854
1855static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1856{
1857 unittest_gpio_chip_request_count++;
1858
1859 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1860 unittest_gpio_chip_request_count);
1861 return 0;
1862}
1863
1864static int unittest_gpio_probe(struct platform_device *pdev)
1865{
1866 struct unittest_gpio_dev *devptr;
1867 int ret;
1868
1869 unittest_gpio_probe_count++;
1870
1871 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1872 if (!devptr)
1873 return -ENOMEM;
1874
1875 platform_set_drvdata(pdev, devptr);
1876
1877 devptr->chip.fwnode = dev_fwnode(&pdev->dev);
1878 devptr->chip.label = "of-unittest-gpio";
1879 devptr->chip.base = -1; /* dynamic allocation */
1880 devptr->chip.ngpio = 5;
1881 devptr->chip.request = unittest_gpio_chip_request;
1882
1883 ret = gpiochip_add_data(&devptr->chip, NULL);
1884
1885 unittest(!ret,
1886 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret);
1887
1888 if (!ret)
1889 unittest_gpio_probe_pass_count++;
1890 return ret;
1891}
1892
1893static void unittest_gpio_remove(struct platform_device *pdev)
1894{
1895 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev);
1896 struct device *dev = &pdev->dev;
1897
1898 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode);
1899
1900 if (devptr->chip.base != -1)
1901 gpiochip_remove(&devptr->chip);
1902
1903 kfree(devptr);
1904}
1905
1906static const struct of_device_id unittest_gpio_id[] = {
1907 { .compatible = "unittest-gpio", },
1908 {}
1909};
1910
1911static struct platform_driver unittest_gpio_driver = {
1912 .probe = unittest_gpio_probe,
1913 .remove_new = unittest_gpio_remove,
1914 .driver = {
1915 .name = "unittest-gpio",
1916 .of_match_table = unittest_gpio_id,
1917 },
1918};
1919
1920static void __init of_unittest_overlay_gpio(void)
1921{
1922 int chip_request_count;
1923 int probe_pass_count;
1924 int ret;
1925
1926 /*
1927 * tests: apply overlays before registering driver
1928 * Similar to installing a driver as a module, the
1929 * driver is registered after applying the overlays.
1930 *
1931 * The overlays are applied by overlay_data_apply()
1932 * instead of of_unittest_apply_overlay() so that they
1933 * will not be tracked. Thus they will not be removed
1934 * by of_unittest_remove_tracked_overlays().
1935 *
1936 * - apply overlay_gpio_01
1937 * - apply overlay_gpio_02a
1938 * - apply overlay_gpio_02b
1939 * - register driver
1940 *
1941 * register driver will result in
1942 * - probe and processing gpio hog for overlay_gpio_01
1943 * - probe for overlay_gpio_02a
1944 * - processing gpio for overlay_gpio_02b
1945 */
1946
1947 probe_pass_count = unittest_gpio_probe_pass_count;
1948 chip_request_count = unittest_gpio_chip_request_count;
1949
1950 /*
1951 * overlay_gpio_01 contains gpio node and child gpio hog node
1952 * overlay_gpio_02a contains gpio node
1953 * overlay_gpio_02b contains child gpio hog node
1954 */
1955
1956 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1957 "Adding overlay 'overlay_gpio_01' failed\n");
1958
1959 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1960 "Adding overlay 'overlay_gpio_02a' failed\n");
1961
1962 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1963 "Adding overlay 'overlay_gpio_02b' failed\n");
1964
1965 ret = platform_driver_register(&unittest_gpio_driver);
1966 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1967 return;
1968
1969 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1970 "unittest_gpio_probe() failed or not called\n");
1971
1972 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1973 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1974 unittest_gpio_chip_request_count - chip_request_count);
1975
1976 /*
1977 * tests: apply overlays after registering driver
1978 *
1979 * Similar to a driver built-in to the kernel, the
1980 * driver is registered before applying the overlays.
1981 *
1982 * overlay_gpio_03 contains gpio node and child gpio hog node
1983 *
1984 * - apply overlay_gpio_03
1985 *
1986 * apply overlay will result in
1987 * - probe and processing gpio hog.
1988 */
1989
1990 probe_pass_count = unittest_gpio_probe_pass_count;
1991 chip_request_count = unittest_gpio_chip_request_count;
1992
1993 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1994
1995 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1996 "Adding overlay 'overlay_gpio_03' failed\n");
1997
1998 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1999 "unittest_gpio_probe() failed or not called\n");
2000
2001 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
2002 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
2003 unittest_gpio_chip_request_count - chip_request_count);
2004
2005 /*
2006 * overlay_gpio_04a contains gpio node
2007 *
2008 * - apply overlay_gpio_04a
2009 *
2010 * apply the overlay will result in
2011 * - probe for overlay_gpio_04a
2012 */
2013
2014 probe_pass_count = unittest_gpio_probe_pass_count;
2015 chip_request_count = unittest_gpio_chip_request_count;
2016
2017 /* overlay_gpio_04a contains gpio node */
2018
2019 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
2020 "Adding overlay 'overlay_gpio_04a' failed\n");
2021
2022 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
2023 "unittest_gpio_probe() failed or not called\n");
2024
2025 /*
2026 * overlay_gpio_04b contains child gpio hog node
2027 *
2028 * - apply overlay_gpio_04b
2029 *
2030 * apply the overlay will result in
2031 * - processing gpio for overlay_gpio_04b
2032 */
2033
2034 /* overlay_gpio_04b contains child gpio hog node */
2035
2036 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
2037 "Adding overlay 'overlay_gpio_04b' failed\n");
2038
2039 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
2040 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
2041 unittest_gpio_chip_request_count - chip_request_count);
2042}
2043
2044#else
2045
2046static void __init of_unittest_overlay_gpio(void)
2047{
2048 /* skip tests */
2049}
2050
2051#endif
2052
2053#if IS_BUILTIN(CONFIG_I2C)
2054
2055/* get the i2c client device instantiated at the path */
2056static struct i2c_client *of_path_to_i2c_client(const char *path)
2057{
2058 struct device_node *np;
2059 struct i2c_client *client;
2060
2061 np = of_find_node_by_path(path);
2062 if (np == NULL)
2063 return NULL;
2064
2065 client = of_find_i2c_device_by_node(np);
2066 of_node_put(np);
2067
2068 return client;
2069}
2070
2071/* find out if a i2c client device exists at that path */
2072static int of_path_i2c_client_exists(const char *path)
2073{
2074 struct i2c_client *client;
2075
2076 client = of_path_to_i2c_client(path);
2077 if (client)
2078 put_device(&client->dev);
2079 return client != NULL;
2080}
2081#else
2082static int of_path_i2c_client_exists(const char *path)
2083{
2084 return 0;
2085}
2086#endif
2087
2088enum overlay_type {
2089 PDEV_OVERLAY,
2090 I2C_OVERLAY
2091};
2092
2093static int of_path_device_type_exists(const char *path,
2094 enum overlay_type ovtype)
2095{
2096 switch (ovtype) {
2097 case PDEV_OVERLAY:
2098 return of_path_platform_device_exists(path);
2099 case I2C_OVERLAY:
2100 return of_path_i2c_client_exists(path);
2101 }
2102 return 0;
2103}
2104
2105static const char *unittest_path(int nr, enum overlay_type ovtype)
2106{
2107 const char *base;
2108 static char buf[256];
2109
2110 switch (ovtype) {
2111 case PDEV_OVERLAY:
2112 base = "/testcase-data/overlay-node/test-bus";
2113 break;
2114 case I2C_OVERLAY:
2115 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
2116 break;
2117 default:
2118 buf[0] = '\0';
2119 return buf;
2120 }
2121 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
2122 buf[sizeof(buf) - 1] = '\0';
2123 return buf;
2124}
2125
2126static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
2127{
2128 const char *path;
2129
2130 path = unittest_path(unittest_nr, ovtype);
2131
2132 switch (ovtype) {
2133 case PDEV_OVERLAY:
2134 return of_path_platform_device_exists(path);
2135 case I2C_OVERLAY:
2136 return of_path_i2c_client_exists(path);
2137 }
2138 return 0;
2139}
2140
2141static const char *overlay_name_from_nr(int nr)
2142{
2143 static char buf[256];
2144
2145 snprintf(buf, sizeof(buf) - 1,
2146 "overlay_%d", nr);
2147 buf[sizeof(buf) - 1] = '\0';
2148
2149 return buf;
2150}
2151
2152static const char *bus_path = "/testcase-data/overlay-node/test-bus";
2153
2154#define MAX_TRACK_OVCS_IDS 256
2155
2156static int track_ovcs_id[MAX_TRACK_OVCS_IDS];
2157static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS];
2158static int track_ovcs_id_cnt;
2159
2160static void of_unittest_track_overlay(int ovcs_id, int overlay_nr)
2161{
2162 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS))
2163 return;
2164
2165 track_ovcs_id[track_ovcs_id_cnt] = ovcs_id;
2166 track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr;
2167 track_ovcs_id_cnt++;
2168}
2169
2170static void of_unittest_untrack_overlay(int ovcs_id)
2171{
2172 if (WARN_ON(track_ovcs_id_cnt < 1))
2173 return;
2174
2175 track_ovcs_id_cnt--;
2176
2177 /* If out of synch then test is broken. Do not try to recover. */
2178 WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id);
2179}
2180
2181static void of_unittest_remove_tracked_overlays(void)
2182{
2183 int ret, ovcs_id, overlay_nr, save_ovcs_id;
2184 const char *overlay_name;
2185
2186 while (track_ovcs_id_cnt > 0) {
2187
2188 ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1];
2189 overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1];
2190 save_ovcs_id = ovcs_id;
2191 ret = of_overlay_remove(&ovcs_id);
2192 if (ret == -ENODEV) {
2193 overlay_name = overlay_name_from_nr(overlay_nr);
2194 pr_warn("%s: of_overlay_remove() for overlay \"%s\" failed, ret = %d\n",
2195 __func__, overlay_name, ret);
2196 }
2197 of_unittest_untrack_overlay(save_ovcs_id);
2198 }
2199
2200}
2201
2202static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id)
2203{
2204 /*
2205 * The overlay will be tracked, thus it will be removed
2206 * by of_unittest_remove_tracked_overlays().
2207 */
2208
2209 const char *overlay_name;
2210
2211 overlay_name = overlay_name_from_nr(overlay_nr);
2212
2213 if (!overlay_data_apply(overlay_name, ovcs_id)) {
2214 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2215 return -EFAULT;
2216 }
2217 of_unittest_track_overlay(*ovcs_id, overlay_nr);
2218
2219 return 0;
2220}
2221
2222static int __init __of_unittest_apply_overlay_check(int overlay_nr,
2223 int unittest_nr, int before, int after,
2224 enum overlay_type ovtype)
2225{
2226 int ret, ovcs_id;
2227
2228 /* unittest device must be in before state */
2229 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2230 unittest(0, "%s with device @\"%s\" %s\n",
2231 overlay_name_from_nr(overlay_nr),
2232 unittest_path(unittest_nr, ovtype),
2233 !before ? "enabled" : "disabled");
2234 return -EINVAL;
2235 }
2236
2237 /* apply the overlay */
2238 ovcs_id = 0;
2239 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2240 if (ret != 0) {
2241 /* of_unittest_apply_overlay already called unittest() */
2242 return ret;
2243 }
2244
2245 /* unittest device must be in after state */
2246 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2247 unittest(0, "%s with device @\"%s\" %s\n",
2248 overlay_name_from_nr(overlay_nr),
2249 unittest_path(unittest_nr, ovtype),
2250 !after ? "enabled" : "disabled");
2251 return -EINVAL;
2252 }
2253
2254 return ovcs_id;
2255}
2256
2257/* apply an overlay while checking before and after states */
2258static int __init of_unittest_apply_overlay_check(int overlay_nr,
2259 int unittest_nr, int before, int after,
2260 enum overlay_type ovtype)
2261{
2262 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr,
2263 unittest_nr, before, after, ovtype);
2264 if (ovcs_id < 0)
2265 return ovcs_id;
2266
2267 return 0;
2268}
2269
2270/* apply an overlay and then revert it while checking before, after states */
2271static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2272 int unittest_nr, int before, int after,
2273 enum overlay_type ovtype)
2274{
2275 int ret, ovcs_id, save_ovcs_id;
2276
2277 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr,
2278 before, after, ovtype);
2279 if (ovcs_id < 0)
2280 return ovcs_id;
2281
2282 /* remove the overlay */
2283 save_ovcs_id = ovcs_id;
2284 ret = of_overlay_remove(&ovcs_id);
2285 if (ret != 0) {
2286 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2287 overlay_name_from_nr(overlay_nr),
2288 unittest_path(unittest_nr, ovtype));
2289 return ret;
2290 }
2291 of_unittest_untrack_overlay(save_ovcs_id);
2292
2293 /* unittest device must be again in before state */
2294 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2295 unittest(0, "%s with device @\"%s\" %s\n",
2296 overlay_name_from_nr(overlay_nr),
2297 unittest_path(unittest_nr, ovtype),
2298 !before ? "enabled" : "disabled");
2299 return -EINVAL;
2300 }
2301
2302 return 0;
2303}
2304
2305/* test activation of device */
2306static void __init of_unittest_overlay_0(void)
2307{
2308 int ret;
2309
2310 EXPECT_BEGIN(KERN_INFO,
2311 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2312
2313 /* device should enable */
2314 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2315
2316 EXPECT_END(KERN_INFO,
2317 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2318
2319 if (ret)
2320 return;
2321
2322 unittest(1, "overlay test %d passed\n", 0);
2323}
2324
2325/* test deactivation of device */
2326static void __init of_unittest_overlay_1(void)
2327{
2328 int ret;
2329
2330 EXPECT_BEGIN(KERN_INFO,
2331 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2332
2333 /* device should disable */
2334 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2335
2336 EXPECT_END(KERN_INFO,
2337 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2338
2339 if (ret)
2340 return;
2341
2342 unittest(1, "overlay test %d passed\n", 1);
2343
2344}
2345
2346/* test activation of device */
2347static void __init of_unittest_overlay_2(void)
2348{
2349 int ret;
2350
2351 EXPECT_BEGIN(KERN_INFO,
2352 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2353
2354 /* device should enable */
2355 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2356
2357 EXPECT_END(KERN_INFO,
2358 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2359
2360 if (ret)
2361 return;
2362 unittest(1, "overlay test %d passed\n", 2);
2363}
2364
2365/* test deactivation of device */
2366static void __init of_unittest_overlay_3(void)
2367{
2368 int ret;
2369
2370 EXPECT_BEGIN(KERN_INFO,
2371 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2372
2373 /* device should disable */
2374 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2375
2376 EXPECT_END(KERN_INFO,
2377 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2378
2379 if (ret)
2380 return;
2381
2382 unittest(1, "overlay test %d passed\n", 3);
2383}
2384
2385/* test activation of a full device node */
2386static void __init of_unittest_overlay_4(void)
2387{
2388 /* device should disable */
2389 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2390 return;
2391
2392 unittest(1, "overlay test %d passed\n", 4);
2393}
2394
2395/* test overlay apply/revert sequence */
2396static void __init of_unittest_overlay_5(void)
2397{
2398 int ret;
2399
2400 EXPECT_BEGIN(KERN_INFO,
2401 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2402
2403 /* device should disable */
2404 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2405
2406 EXPECT_END(KERN_INFO,
2407 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2408
2409 if (ret)
2410 return;
2411
2412 unittest(1, "overlay test %d passed\n", 5);
2413}
2414
2415/* test overlay application in sequence */
2416static void __init of_unittest_overlay_6(void)
2417{
2418 int i, save_ovcs_id[2], ovcs_id;
2419 int overlay_nr = 6, unittest_nr = 6;
2420 int before = 0, after = 1;
2421 const char *overlay_name;
2422
2423 int ret;
2424
2425 /* unittest device must be in before state */
2426 for (i = 0; i < 2; i++) {
2427 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2428 != before) {
2429 unittest(0, "%s with device @\"%s\" %s\n",
2430 overlay_name_from_nr(overlay_nr + i),
2431 unittest_path(unittest_nr + i,
2432 PDEV_OVERLAY),
2433 !before ? "enabled" : "disabled");
2434 return;
2435 }
2436 }
2437
2438 /* apply the overlays */
2439
2440 EXPECT_BEGIN(KERN_INFO,
2441 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2442
2443 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2444
2445 ret = overlay_data_apply(overlay_name, &ovcs_id);
2446
2447 if (!ret) {
2448 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2449 return;
2450 }
2451 save_ovcs_id[0] = ovcs_id;
2452 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
2453
2454 EXPECT_END(KERN_INFO,
2455 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2456
2457 EXPECT_BEGIN(KERN_INFO,
2458 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2459
2460 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2461
2462 ret = overlay_data_apply(overlay_name, &ovcs_id);
2463
2464 if (!ret) {
2465 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2466 return;
2467 }
2468 save_ovcs_id[1] = ovcs_id;
2469 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
2470
2471 EXPECT_END(KERN_INFO,
2472 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2473
2474
2475 for (i = 0; i < 2; i++) {
2476 /* unittest device must be in after state */
2477 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2478 != after) {
2479 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2480 overlay_name_from_nr(overlay_nr + i),
2481 unittest_path(unittest_nr + i,
2482 PDEV_OVERLAY),
2483 !after ? "enabled" : "disabled");
2484 return;
2485 }
2486 }
2487
2488 for (i = 1; i >= 0; i--) {
2489 ovcs_id = save_ovcs_id[i];
2490 if (of_overlay_remove(&ovcs_id)) {
2491 unittest(0, "%s failed destroy @\"%s\"\n",
2492 overlay_name_from_nr(overlay_nr + i),
2493 unittest_path(unittest_nr + i,
2494 PDEV_OVERLAY));
2495 return;
2496 }
2497 of_unittest_untrack_overlay(save_ovcs_id[i]);
2498 }
2499
2500 for (i = 0; i < 2; i++) {
2501 /* unittest device must be again in before state */
2502 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2503 != before) {
2504 unittest(0, "%s with device @\"%s\" %s\n",
2505 overlay_name_from_nr(overlay_nr + i),
2506 unittest_path(unittest_nr + i,
2507 PDEV_OVERLAY),
2508 !before ? "enabled" : "disabled");
2509 return;
2510 }
2511 }
2512
2513 unittest(1, "overlay test %d passed\n", 6);
2514
2515}
2516
2517/* test overlay application in sequence */
2518static void __init of_unittest_overlay_8(void)
2519{
2520 int i, save_ovcs_id[2], ovcs_id;
2521 int overlay_nr = 8, unittest_nr = 8;
2522 const char *overlay_name;
2523 int ret;
2524
2525 /* we don't care about device state in this test */
2526
2527 EXPECT_BEGIN(KERN_INFO,
2528 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2529
2530 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2531
2532 ret = overlay_data_apply(overlay_name, &ovcs_id);
2533 if (!ret)
2534 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2535
2536 EXPECT_END(KERN_INFO,
2537 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2538
2539 if (!ret)
2540 return;
2541
2542 save_ovcs_id[0] = ovcs_id;
2543 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
2544
2545 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2546
2547 EXPECT_BEGIN(KERN_INFO,
2548 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2549
2550 /* apply the overlays */
2551 ret = overlay_data_apply(overlay_name, &ovcs_id);
2552
2553 EXPECT_END(KERN_INFO,
2554 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2555
2556 if (!ret) {
2557 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2558 return;
2559 }
2560
2561 save_ovcs_id[1] = ovcs_id;
2562 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
2563
2564 /* now try to remove first overlay (it should fail) */
2565 ovcs_id = save_ovcs_id[0];
2566
2567 EXPECT_BEGIN(KERN_INFO,
2568 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2569
2570 EXPECT_BEGIN(KERN_INFO,
2571 "OF: overlay: overlay #6 is not topmost");
2572
2573 ret = of_overlay_remove(&ovcs_id);
2574
2575 EXPECT_END(KERN_INFO,
2576 "OF: overlay: overlay #6 is not topmost");
2577
2578 EXPECT_END(KERN_INFO,
2579 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2580
2581 if (!ret) {
2582 /*
2583 * Should never get here. If we do, expect a lot of
2584 * subsequent tracking and overlay removal related errors.
2585 */
2586 unittest(0, "%s was destroyed @\"%s\"\n",
2587 overlay_name_from_nr(overlay_nr + 0),
2588 unittest_path(unittest_nr,
2589 PDEV_OVERLAY));
2590 return;
2591 }
2592
2593 /* removing them in order should work */
2594 for (i = 1; i >= 0; i--) {
2595 ovcs_id = save_ovcs_id[i];
2596 if (of_overlay_remove(&ovcs_id)) {
2597 unittest(0, "%s not destroyed @\"%s\"\n",
2598 overlay_name_from_nr(overlay_nr + i),
2599 unittest_path(unittest_nr,
2600 PDEV_OVERLAY));
2601 return;
2602 }
2603 of_unittest_untrack_overlay(save_ovcs_id[i]);
2604 }
2605
2606 unittest(1, "overlay test %d passed\n", 8);
2607}
2608
2609/* test insertion of a bus with parent devices */
2610static void __init of_unittest_overlay_10(void)
2611{
2612 int ret;
2613 char *child_path;
2614
2615 /* device should disable */
2616 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2617
2618 if (unittest(ret == 0,
2619 "overlay test %d failed; overlay application\n", 10))
2620 return;
2621
2622 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2623 unittest_path(10, PDEV_OVERLAY));
2624 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2625 return;
2626
2627 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2628 kfree(child_path);
2629
2630 unittest(ret, "overlay test %d failed; no child device\n", 10);
2631}
2632
2633/* test insertion of a bus with parent devices (and revert) */
2634static void __init of_unittest_overlay_11(void)
2635{
2636 int ret;
2637
2638 /* device should disable */
2639 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2640 PDEV_OVERLAY);
2641
2642 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2643}
2644
2645#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2646
2647struct unittest_i2c_bus_data {
2648 struct platform_device *pdev;
2649 struct i2c_adapter adap;
2650};
2651
2652static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2653 struct i2c_msg *msgs, int num)
2654{
2655 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2656
2657 (void)std;
2658
2659 return num;
2660}
2661
2662static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2663{
2664 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2665}
2666
2667static const struct i2c_algorithm unittest_i2c_algo = {
2668 .master_xfer = unittest_i2c_master_xfer,
2669 .functionality = unittest_i2c_functionality,
2670};
2671
2672static int unittest_i2c_bus_probe(struct platform_device *pdev)
2673{
2674 struct device *dev = &pdev->dev;
2675 struct device_node *np = dev->of_node;
2676 struct unittest_i2c_bus_data *std;
2677 struct i2c_adapter *adap;
2678 int ret;
2679
2680 if (np == NULL) {
2681 dev_err(dev, "No OF data for device\n");
2682 return -EINVAL;
2683
2684 }
2685
2686 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2687
2688 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2689 if (!std)
2690 return -ENOMEM;
2691
2692 /* link them together */
2693 std->pdev = pdev;
2694 platform_set_drvdata(pdev, std);
2695
2696 adap = &std->adap;
2697 i2c_set_adapdata(adap, std);
2698 adap->nr = -1;
2699 strscpy(adap->name, pdev->name, sizeof(adap->name));
2700 adap->class = I2C_CLASS_DEPRECATED;
2701 adap->algo = &unittest_i2c_algo;
2702 adap->dev.parent = dev;
2703 adap->dev.of_node = dev->of_node;
2704 adap->timeout = 5 * HZ;
2705 adap->retries = 3;
2706
2707 ret = i2c_add_numbered_adapter(adap);
2708 if (ret != 0) {
2709 dev_err(dev, "Failed to add I2C adapter\n");
2710 return ret;
2711 }
2712
2713 return 0;
2714}
2715
2716static void unittest_i2c_bus_remove(struct platform_device *pdev)
2717{
2718 struct device *dev = &pdev->dev;
2719 struct device_node *np = dev->of_node;
2720 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2721
2722 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2723 i2c_del_adapter(&std->adap);
2724}
2725
2726static const struct of_device_id unittest_i2c_bus_match[] = {
2727 { .compatible = "unittest-i2c-bus", },
2728 {},
2729};
2730
2731static struct platform_driver unittest_i2c_bus_driver = {
2732 .probe = unittest_i2c_bus_probe,
2733 .remove_new = unittest_i2c_bus_remove,
2734 .driver = {
2735 .name = "unittest-i2c-bus",
2736 .of_match_table = unittest_i2c_bus_match,
2737 },
2738};
2739
2740static int unittest_i2c_dev_probe(struct i2c_client *client)
2741{
2742 struct device *dev = &client->dev;
2743 struct device_node *np = client->dev.of_node;
2744
2745 if (!np) {
2746 dev_err(dev, "No OF node\n");
2747 return -EINVAL;
2748 }
2749
2750 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2751
2752 return 0;
2753};
2754
2755static void unittest_i2c_dev_remove(struct i2c_client *client)
2756{
2757 struct device *dev = &client->dev;
2758 struct device_node *np = client->dev.of_node;
2759
2760 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2761}
2762
2763static const struct i2c_device_id unittest_i2c_dev_id[] = {
2764 { .name = "unittest-i2c-dev" },
2765 { }
2766};
2767
2768static struct i2c_driver unittest_i2c_dev_driver = {
2769 .driver = {
2770 .name = "unittest-i2c-dev",
2771 },
2772 .probe = unittest_i2c_dev_probe,
2773 .remove = unittest_i2c_dev_remove,
2774 .id_table = unittest_i2c_dev_id,
2775};
2776
2777#if IS_BUILTIN(CONFIG_I2C_MUX)
2778
2779static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2780{
2781 return 0;
2782}
2783
2784static int unittest_i2c_mux_probe(struct i2c_client *client)
2785{
2786 int i, nchans;
2787 struct device *dev = &client->dev;
2788 struct i2c_adapter *adap = client->adapter;
2789 struct device_node *np = client->dev.of_node, *child;
2790 struct i2c_mux_core *muxc;
2791 u32 reg, max_reg;
2792
2793 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2794
2795 if (!np) {
2796 dev_err(dev, "No OF node\n");
2797 return -EINVAL;
2798 }
2799
2800 max_reg = (u32)-1;
2801 for_each_child_of_node(np, child) {
2802 if (of_property_read_u32(child, "reg", ®))
2803 continue;
2804 if (max_reg == (u32)-1 || reg > max_reg)
2805 max_reg = reg;
2806 }
2807 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2808 if (nchans == 0) {
2809 dev_err(dev, "No channels\n");
2810 return -EINVAL;
2811 }
2812
2813 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2814 unittest_i2c_mux_select_chan, NULL);
2815 if (!muxc)
2816 return -ENOMEM;
2817 for (i = 0; i < nchans; i++) {
2818 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2819 dev_err(dev, "Failed to register mux #%d\n", i);
2820 i2c_mux_del_adapters(muxc);
2821 return -ENODEV;
2822 }
2823 }
2824
2825 i2c_set_clientdata(client, muxc);
2826
2827 return 0;
2828};
2829
2830static void unittest_i2c_mux_remove(struct i2c_client *client)
2831{
2832 struct device *dev = &client->dev;
2833 struct device_node *np = client->dev.of_node;
2834 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2835
2836 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2837 i2c_mux_del_adapters(muxc);
2838}
2839
2840static const struct i2c_device_id unittest_i2c_mux_id[] = {
2841 { .name = "unittest-i2c-mux" },
2842 { }
2843};
2844
2845static struct i2c_driver unittest_i2c_mux_driver = {
2846 .driver = {
2847 .name = "unittest-i2c-mux",
2848 },
2849 .probe = unittest_i2c_mux_probe,
2850 .remove = unittest_i2c_mux_remove,
2851 .id_table = unittest_i2c_mux_id,
2852};
2853
2854#endif
2855
2856static int of_unittest_overlay_i2c_init(void)
2857{
2858 int ret;
2859
2860 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2861 if (unittest(ret == 0,
2862 "could not register unittest i2c device driver\n"))
2863 return ret;
2864
2865 ret = platform_driver_register(&unittest_i2c_bus_driver);
2866
2867 if (unittest(ret == 0,
2868 "could not register unittest i2c bus driver\n"))
2869 return ret;
2870
2871#if IS_BUILTIN(CONFIG_I2C_MUX)
2872
2873 EXPECT_BEGIN(KERN_INFO,
2874 "i2c i2c-1: Added multiplexed i2c bus 2");
2875
2876 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2877
2878 EXPECT_END(KERN_INFO,
2879 "i2c i2c-1: Added multiplexed i2c bus 2");
2880
2881 if (unittest(ret == 0,
2882 "could not register unittest i2c mux driver\n"))
2883 return ret;
2884#endif
2885
2886 return 0;
2887}
2888
2889static void of_unittest_overlay_i2c_cleanup(void)
2890{
2891#if IS_BUILTIN(CONFIG_I2C_MUX)
2892 i2c_del_driver(&unittest_i2c_mux_driver);
2893#endif
2894 platform_driver_unregister(&unittest_i2c_bus_driver);
2895 i2c_del_driver(&unittest_i2c_dev_driver);
2896}
2897
2898static void __init of_unittest_overlay_i2c_12(void)
2899{
2900 int ret;
2901
2902 /* device should enable */
2903 EXPECT_BEGIN(KERN_INFO,
2904 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2905
2906 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2907
2908 EXPECT_END(KERN_INFO,
2909 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2910
2911 if (ret)
2912 return;
2913
2914 unittest(1, "overlay test %d passed\n", 12);
2915}
2916
2917/* test deactivation of device */
2918static void __init of_unittest_overlay_i2c_13(void)
2919{
2920 int ret;
2921
2922 EXPECT_BEGIN(KERN_INFO,
2923 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2924
2925 /* device should disable */
2926 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2927
2928 EXPECT_END(KERN_INFO,
2929 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2930
2931 if (ret)
2932 return;
2933
2934 unittest(1, "overlay test %d passed\n", 13);
2935}
2936
2937/* just check for i2c mux existence */
2938static void of_unittest_overlay_i2c_14(void)
2939{
2940}
2941
2942static void __init of_unittest_overlay_i2c_15(void)
2943{
2944 int ret;
2945
2946 /* device should enable */
2947 EXPECT_BEGIN(KERN_INFO,
2948 "i2c i2c-1: Added multiplexed i2c bus 3");
2949
2950 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2951
2952 EXPECT_END(KERN_INFO,
2953 "i2c i2c-1: Added multiplexed i2c bus 3");
2954
2955 if (ret)
2956 return;
2957
2958 unittest(1, "overlay test %d passed\n", 15);
2959}
2960
2961#else
2962
2963static inline void of_unittest_overlay_i2c_14(void) { }
2964static inline void of_unittest_overlay_i2c_15(void) { }
2965
2966#endif
2967
2968static int of_notify(struct notifier_block *nb, unsigned long action,
2969 void *arg)
2970{
2971 struct of_overlay_notify_data *nd = arg;
2972 struct device_node *found;
2973 int ret;
2974
2975 /*
2976 * For overlay_16 .. overlay_19, check that returning an error
2977 * works for each of the actions by setting an arbitrary return
2978 * error number that matches the test number. e.g. for unittest16,
2979 * ret = -EBUSY which is -16.
2980 *
2981 * OVERLAY_INFO() for the overlays is declared to expect the same
2982 * error number, so overlay_data_apply() will return no error.
2983 *
2984 * overlay_20 will return NOTIFY_DONE
2985 */
2986
2987 ret = 0;
2988 of_node_get(nd->overlay);
2989
2990 switch (action) {
2991
2992 case OF_OVERLAY_PRE_APPLY:
2993 found = of_find_node_by_name(nd->overlay, "test-unittest16");
2994 if (found) {
2995 of_node_put(found);
2996 ret = -EBUSY;
2997 }
2998 break;
2999
3000 case OF_OVERLAY_POST_APPLY:
3001 found = of_find_node_by_name(nd->overlay, "test-unittest17");
3002 if (found) {
3003 of_node_put(found);
3004 ret = -EEXIST;
3005 }
3006 break;
3007
3008 case OF_OVERLAY_PRE_REMOVE:
3009 found = of_find_node_by_name(nd->overlay, "test-unittest18");
3010 if (found) {
3011 of_node_put(found);
3012 ret = -EXDEV;
3013 }
3014 break;
3015
3016 case OF_OVERLAY_POST_REMOVE:
3017 found = of_find_node_by_name(nd->overlay, "test-unittest19");
3018 if (found) {
3019 of_node_put(found);
3020 ret = -ENODEV;
3021 }
3022 break;
3023
3024 default: /* should not happen */
3025 of_node_put(nd->overlay);
3026 ret = -EINVAL;
3027 break;
3028 }
3029
3030 if (ret)
3031 return notifier_from_errno(ret);
3032
3033 return NOTIFY_DONE;
3034}
3035
3036static struct notifier_block of_nb = {
3037 .notifier_call = of_notify,
3038};
3039
3040static void __init of_unittest_overlay_notify(void)
3041{
3042 int ovcs_id;
3043 int ret;
3044
3045 ret = of_overlay_notifier_register(&of_nb);
3046 unittest(!ret,
3047 "of_overlay_notifier_register() failed, ret = %d\n", ret);
3048 if (ret)
3049 return;
3050
3051 /*
3052 * The overlays are applied by overlay_data_apply()
3053 * instead of of_unittest_apply_overlay() so that they
3054 * will not be tracked. Thus they will not be removed
3055 * by of_unittest_remove_tracked_overlays().
3056 *
3057 * Applying overlays 16 - 19 will each trigger an error for a
3058 * different action in of_notify().
3059 *
3060 * Applying overlay 20 will not trigger any error in of_notify().
3061 */
3062
3063 /* --- overlay 16 --- */
3064
3065 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3066
3067 unittest(overlay_data_apply("overlay_16", &ovcs_id),
3068 "test OF_OVERLAY_PRE_APPLY notify injected error\n");
3069
3070 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3071
3072 unittest(ovcs_id, "ovcs_id not created for overlay_16\n");
3073
3074 /* --- overlay 17 --- */
3075
3076 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3077
3078 unittest(overlay_data_apply("overlay_17", &ovcs_id),
3079 "test OF_OVERLAY_POST_APPLY notify injected error\n");
3080
3081 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3082
3083 unittest(ovcs_id, "ovcs_id not created for overlay_17\n");
3084
3085 /* --- overlay 18 --- */
3086
3087 unittest(overlay_data_apply("overlay_18", &ovcs_id),
3088 "OF_OVERLAY_PRE_REMOVE notify injected error\n");
3089
3090 unittest(ovcs_id, "ovcs_id not created for overlay_18\n");
3091
3092 if (ovcs_id) {
3093 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus");
3094
3095 ret = of_overlay_remove(&ovcs_id);
3096 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus");
3097 if (ret == -EXDEV) {
3098 /*
3099 * change set ovcs_id should still exist
3100 */
3101 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n");
3102 } else {
3103 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n");
3104 }
3105 } else {
3106 unittest(1, "ovcs_id not created for overlay_18\n");
3107 }
3108
3109 unittest(ovcs_id, "ovcs_id removed for overlay_18\n");
3110
3111 /* --- overlay 19 --- */
3112
3113 unittest(overlay_data_apply("overlay_19", &ovcs_id),
3114 "OF_OVERLAY_POST_REMOVE notify injected error\n");
3115
3116 unittest(ovcs_id, "ovcs_id not created for overlay_19\n");
3117
3118 if (ovcs_id) {
3119 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus");
3120 ret = of_overlay_remove(&ovcs_id);
3121 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus");
3122 if (ret == -ENODEV)
3123 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n");
3124 else
3125 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n");
3126 } else {
3127 unittest(1, "ovcs_id removed for overlay_19\n");
3128 }
3129
3130 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n",
3131 ovcs_id);
3132
3133 /* --- overlay 20 --- */
3134
3135 unittest(overlay_data_apply("overlay_20", &ovcs_id),
3136 "overlay notify no injected error\n");
3137
3138 if (ovcs_id) {
3139 ret = of_overlay_remove(&ovcs_id);
3140 if (ret)
3141 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n",
3142 ret);
3143 } else {
3144 unittest(1, "ovcs_id not created for overlay_20\n");
3145 }
3146
3147 unittest(!of_overlay_notifier_unregister(&of_nb),
3148 "of_overlay_notifier_unregister() failed, ret = %d\n", ret);
3149}
3150
3151static void __init of_unittest_overlay(void)
3152{
3153 struct device_node *bus_np = NULL;
3154 unsigned int i;
3155
3156 if (platform_driver_register(&unittest_driver)) {
3157 unittest(0, "could not register unittest driver\n");
3158 goto out;
3159 }
3160
3161 bus_np = of_find_node_by_path(bus_path);
3162 if (bus_np == NULL) {
3163 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
3164 goto out;
3165 }
3166
3167 if (of_platform_default_populate(bus_np, NULL, NULL)) {
3168 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
3169 goto out;
3170 }
3171
3172 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
3173 unittest(0, "could not find unittest0 @ \"%s\"\n",
3174 unittest_path(100, PDEV_OVERLAY));
3175 goto out;
3176 }
3177
3178 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
3179 unittest(0, "unittest1 @ \"%s\" should not exist\n",
3180 unittest_path(101, PDEV_OVERLAY));
3181 goto out;
3182 }
3183
3184 unittest(1, "basic infrastructure of overlays passed");
3185
3186 /* tests in sequence */
3187 of_unittest_overlay_0();
3188 of_unittest_overlay_1();
3189 of_unittest_overlay_2();
3190 of_unittest_overlay_3();
3191 of_unittest_overlay_4();
3192 for (i = 0; i < 3; i++)
3193 of_unittest_overlay_5();
3194 of_unittest_overlay_6();
3195 of_unittest_overlay_8();
3196
3197 of_unittest_overlay_10();
3198 of_unittest_overlay_11();
3199
3200#if IS_BUILTIN(CONFIG_I2C)
3201 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
3202 goto out;
3203
3204 of_unittest_overlay_i2c_12();
3205 of_unittest_overlay_i2c_13();
3206 of_unittest_overlay_i2c_14();
3207 of_unittest_overlay_i2c_15();
3208
3209 of_unittest_overlay_i2c_cleanup();
3210#endif
3211
3212 of_unittest_overlay_gpio();
3213
3214 of_unittest_remove_tracked_overlays();
3215
3216 of_unittest_overlay_notify();
3217
3218out:
3219 of_node_put(bus_np);
3220}
3221
3222#else
3223static inline void __init of_unittest_overlay(void) { }
3224#endif
3225
3226static void __init of_unittest_lifecycle(void)
3227{
3228#ifdef CONFIG_OF_DYNAMIC
3229 unsigned int refcount;
3230 int found_refcount_one = 0;
3231 int put_count = 0;
3232 struct device_node *np;
3233 struct device_node *prev_sibling, *next_sibling;
3234 const char *refcount_path = "/testcase-data/refcount-node";
3235 const char *refcount_parent_path = "/testcase-data";
3236
3237 /*
3238 * Node lifecycle tests, non-dynamic node:
3239 *
3240 * - Decrementing refcount to zero via of_node_put() should cause the
3241 * attempt to free the node memory by of_node_release() to fail
3242 * because the node is not a dynamic node.
3243 *
3244 * - Decrementing refcount past zero should result in additional
3245 * errors reported.
3246 */
3247
3248 np = of_find_node_by_path(refcount_path);
3249 unittest(np, "find refcount_path \"%s\"\n", refcount_path);
3250 if (np == NULL)
3251 goto out_skip_tests;
3252
3253 while (!found_refcount_one) {
3254
3255 if (put_count++ > 10) {
3256 unittest(0, "guardrail to avoid infinite loop\n");
3257 goto out_skip_tests;
3258 }
3259
3260 refcount = kref_read(&np->kobj.kref);
3261 if (refcount == 1)
3262 found_refcount_one = 1;
3263 else
3264 of_node_put(np);
3265 }
3266
3267 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
3268
3269 /*
3270 * refcount is now one, decrementing to zero will result in a call to
3271 * of_node_release() to free the node's memory, which should result
3272 * in an error
3273 */
3274 unittest(1, "/testcase-data/refcount-node is one");
3275 of_node_put(np);
3276
3277 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
3278
3279
3280 /*
3281 * expect stack trace for subsequent of_node_put():
3282 * __refcount_sub_and_test() calls:
3283 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF)
3284 *
3285 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just
3286 * the first three lines, and the last line.
3287 */
3288 EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------");
3289 EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>");
3290 EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free.");
3291 EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---");
3292
3293 /* refcount is now zero, this should fail */
3294 unittest(1, "/testcase-data/refcount-node is zero");
3295 of_node_put(np);
3296
3297 EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---");
3298 EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free.");
3299 EXPECT_END(KERN_INFO, "WARNING: <<all>>");
3300 EXPECT_END(KERN_INFO, "------------[ cut here ]------------");
3301
3302 /*
3303 * Q. do we expect to get yet another warning?
3304 * A. no, the WARNING is from WARN_ONCE()
3305 */
3306 EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------");
3307 EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>");
3308 EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free.");
3309 EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---");
3310
3311 unittest(1, "/testcase-data/refcount-node is zero, second time");
3312 of_node_put(np);
3313
3314 EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---");
3315 EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free.");
3316 EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>");
3317 EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------");
3318
3319 /*
3320 * refcount of zero will trigger stack traces from any further
3321 * attempt to of_node_get() node "refcount-node". One example of
3322 * this is where of_unittest_check_node_linkage() will recursively
3323 * scan the tree, with 'for_each_child_of_node()' doing an
3324 * of_node_get() of the children of a node.
3325 *
3326 * Prevent the stack trace by removing node "refcount-node" from
3327 * its parent's child list.
3328 *
3329 * WARNING: EVIL, EVIL, EVIL:
3330 *
3331 * Directly manipulate the child list of node /testcase-data to
3332 * remove child refcount-node. This is ignoring all proper methods
3333 * of removing a child and will leak a small amount of memory.
3334 */
3335
3336 np = of_find_node_by_path(refcount_parent_path);
3337 unittest(np, "find refcount_parent_path \"%s\"\n", refcount_parent_path);
3338 unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n");
3339 if (np == NULL)
3340 return;
3341
3342 prev_sibling = np->child;
3343 next_sibling = prev_sibling->sibling;
3344 if (!strcmp(prev_sibling->full_name, "refcount-node")) {
3345 np->child = next_sibling;
3346 next_sibling = next_sibling->sibling;
3347 }
3348 while (next_sibling) {
3349 if (!strcmp(next_sibling->full_name, "refcount-node"))
3350 prev_sibling->sibling = next_sibling->sibling;
3351 prev_sibling = next_sibling;
3352 next_sibling = next_sibling->sibling;
3353 }
3354 of_node_put(np);
3355
3356 return;
3357
3358out_skip_tests:
3359#endif
3360 unittest(0, "One or more lifecycle tests skipped\n");
3361}
3362
3363#ifdef CONFIG_OF_OVERLAY
3364
3365/*
3366 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are
3367 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
3368 */
3369
3370#define OVERLAY_INFO_EXTERN(overlay_name) \
3371 extern uint8_t __dtbo_##overlay_name##_begin[]; \
3372 extern uint8_t __dtbo_##overlay_name##_end[]
3373
3374#define OVERLAY_INFO(overlay_name, expected, expected_remove) \
3375{ .dtbo_begin = __dtbo_##overlay_name##_begin, \
3376 .dtbo_end = __dtbo_##overlay_name##_end, \
3377 .expected_result = expected, \
3378 .expected_result_remove = expected_remove, \
3379 .name = #overlay_name, \
3380}
3381
3382struct overlay_info {
3383 uint8_t *dtbo_begin;
3384 uint8_t *dtbo_end;
3385 int expected_result;
3386 int expected_result_remove; /* if apply failed */
3387 int ovcs_id;
3388 char *name;
3389};
3390
3391OVERLAY_INFO_EXTERN(overlay_base);
3392OVERLAY_INFO_EXTERN(overlay);
3393OVERLAY_INFO_EXTERN(overlay_0);
3394OVERLAY_INFO_EXTERN(overlay_1);
3395OVERLAY_INFO_EXTERN(overlay_2);
3396OVERLAY_INFO_EXTERN(overlay_3);
3397OVERLAY_INFO_EXTERN(overlay_4);
3398OVERLAY_INFO_EXTERN(overlay_5);
3399OVERLAY_INFO_EXTERN(overlay_6);
3400OVERLAY_INFO_EXTERN(overlay_7);
3401OVERLAY_INFO_EXTERN(overlay_8);
3402OVERLAY_INFO_EXTERN(overlay_9);
3403OVERLAY_INFO_EXTERN(overlay_10);
3404OVERLAY_INFO_EXTERN(overlay_11);
3405OVERLAY_INFO_EXTERN(overlay_12);
3406OVERLAY_INFO_EXTERN(overlay_13);
3407OVERLAY_INFO_EXTERN(overlay_15);
3408OVERLAY_INFO_EXTERN(overlay_16);
3409OVERLAY_INFO_EXTERN(overlay_17);
3410OVERLAY_INFO_EXTERN(overlay_18);
3411OVERLAY_INFO_EXTERN(overlay_19);
3412OVERLAY_INFO_EXTERN(overlay_20);
3413OVERLAY_INFO_EXTERN(overlay_gpio_01);
3414OVERLAY_INFO_EXTERN(overlay_gpio_02a);
3415OVERLAY_INFO_EXTERN(overlay_gpio_02b);
3416OVERLAY_INFO_EXTERN(overlay_gpio_03);
3417OVERLAY_INFO_EXTERN(overlay_gpio_04a);
3418OVERLAY_INFO_EXTERN(overlay_gpio_04b);
3419OVERLAY_INFO_EXTERN(overlay_pci_node);
3420OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
3421OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
3422OVERLAY_INFO_EXTERN(overlay_bad_phandle);
3423OVERLAY_INFO_EXTERN(overlay_bad_symbol);
3424OVERLAY_INFO_EXTERN(overlay_bad_unresolved);
3425
3426/* entries found by name */
3427static struct overlay_info overlays[] = {
3428 OVERLAY_INFO(overlay_base, -9999, 0),
3429 OVERLAY_INFO(overlay, 0, 0),
3430 OVERLAY_INFO(overlay_0, 0, 0),
3431 OVERLAY_INFO(overlay_1, 0, 0),
3432 OVERLAY_INFO(overlay_2, 0, 0),
3433 OVERLAY_INFO(overlay_3, 0, 0),
3434 OVERLAY_INFO(overlay_4, 0, 0),
3435 OVERLAY_INFO(overlay_5, 0, 0),
3436 OVERLAY_INFO(overlay_6, 0, 0),
3437 OVERLAY_INFO(overlay_7, 0, 0),
3438 OVERLAY_INFO(overlay_8, 0, 0),
3439 OVERLAY_INFO(overlay_9, 0, 0),
3440 OVERLAY_INFO(overlay_10, 0, 0),
3441 OVERLAY_INFO(overlay_11, 0, 0),
3442 OVERLAY_INFO(overlay_12, 0, 0),
3443 OVERLAY_INFO(overlay_13, 0, 0),
3444 OVERLAY_INFO(overlay_15, 0, 0),
3445 OVERLAY_INFO(overlay_16, -EBUSY, 0),
3446 OVERLAY_INFO(overlay_17, -EEXIST, 0),
3447 OVERLAY_INFO(overlay_18, 0, 0),
3448 OVERLAY_INFO(overlay_19, 0, 0),
3449 OVERLAY_INFO(overlay_20, 0, 0),
3450 OVERLAY_INFO(overlay_gpio_01, 0, 0),
3451 OVERLAY_INFO(overlay_gpio_02a, 0, 0),
3452 OVERLAY_INFO(overlay_gpio_02b, 0, 0),
3453 OVERLAY_INFO(overlay_gpio_03, 0, 0),
3454 OVERLAY_INFO(overlay_gpio_04a, 0, 0),
3455 OVERLAY_INFO(overlay_gpio_04b, 0, 0),
3456 OVERLAY_INFO(overlay_pci_node, 0, 0),
3457 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV),
3458 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV),
3459 OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0),
3460 OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV),
3461 OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0),
3462 /* end marker */
3463 { }
3464};
3465
3466static struct device_node *overlay_base_root;
3467
3468static void * __init dt_alloc_memory(u64 size, u64 align)
3469{
3470 void *ptr = memblock_alloc(size, align);
3471
3472 if (!ptr)
3473 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
3474 __func__, size, align);
3475
3476 return ptr;
3477}
3478
3479/*
3480 * Create base device tree for the overlay unittest.
3481 *
3482 * This is called from very early boot code.
3483 *
3484 * Do as much as possible the same way as done in __unflatten_device_tree
3485 * and other early boot steps for the normal FDT so that the overlay base
3486 * unflattened tree will have the same characteristics as the real tree
3487 * (such as having memory allocated by the early allocator). The goal
3488 * is to test "the real thing" as much as possible, and test "test setup
3489 * code" as little as possible.
3490 *
3491 * Have to stop before resolving phandles, because that uses kmalloc.
3492 */
3493void __init unittest_unflatten_overlay_base(void)
3494{
3495 struct overlay_info *info;
3496 u32 data_size;
3497 void *new_fdt;
3498 u32 size;
3499 int found = 0;
3500 const char *overlay_name = "overlay_base";
3501
3502 for (info = overlays; info && info->name; info++) {
3503 if (!strcmp(overlay_name, info->name)) {
3504 found = 1;
3505 break;
3506 }
3507 }
3508 if (!found) {
3509 pr_err("no overlay data for %s\n", overlay_name);
3510 return;
3511 }
3512
3513 info = &overlays[0];
3514
3515 if (info->expected_result != -9999) {
3516 pr_err("No dtb 'overlay_base' to attach\n");
3517 return;
3518 }
3519
3520 data_size = info->dtbo_end - info->dtbo_begin;
3521 if (!data_size) {
3522 pr_err("No dtb 'overlay_base' to attach\n");
3523 return;
3524 }
3525
3526 size = fdt_totalsize(info->dtbo_begin);
3527 if (size != data_size) {
3528 pr_err("dtb 'overlay_base' header totalsize != actual size");
3529 return;
3530 }
3531
3532 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
3533 if (!new_fdt) {
3534 pr_err("alloc for dtb 'overlay_base' failed");
3535 return;
3536 }
3537
3538 memcpy(new_fdt, info->dtbo_begin, size);
3539
3540 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
3541 dt_alloc_memory, true);
3542}
3543
3544/*
3545 * The purpose of of_unittest_overlay_data_add is to add an
3546 * overlay in the normal fashion. This is a test of the whole
3547 * picture, instead of testing individual elements.
3548 *
3549 * A secondary purpose is to be able to verify that the contents of
3550 * /proc/device-tree/ contains the updated structure and values from
3551 * the overlay. That must be verified separately in user space.
3552 *
3553 * Return 0 on unexpected error.
3554 */
3555static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id)
3556{
3557 struct overlay_info *info;
3558 int passed = 1;
3559 int found = 0;
3560 int ret, ret2;
3561 u32 size;
3562
3563 for (info = overlays; info && info->name; info++) {
3564 if (!strcmp(overlay_name, info->name)) {
3565 found = 1;
3566 break;
3567 }
3568 }
3569 if (!found) {
3570 pr_err("no overlay data for %s\n", overlay_name);
3571 return 0;
3572 }
3573
3574 size = info->dtbo_end - info->dtbo_begin;
3575 if (!size)
3576 pr_err("no overlay data for %s\n", overlay_name);
3577
3578 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id,
3579 NULL);
3580 if (ovcs_id)
3581 *ovcs_id = info->ovcs_id;
3582 if (ret < 0)
3583 goto out;
3584
3585 pr_debug("%s applied\n", overlay_name);
3586
3587out:
3588 if (ret != info->expected_result) {
3589 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3590 info->expected_result, ret, overlay_name);
3591 passed = 0;
3592 }
3593
3594 if (ret < 0) {
3595 /* changeset may be partially applied */
3596 ret2 = of_overlay_remove(&info->ovcs_id);
3597 if (ret2 != info->expected_result_remove) {
3598 pr_err("of_overlay_remove() expected %d, ret=%d, %s\n",
3599 info->expected_result_remove, ret2,
3600 overlay_name);
3601 passed = 0;
3602 }
3603 }
3604
3605 return passed;
3606}
3607
3608/*
3609 * The purpose of of_unittest_overlay_high_level is to add an overlay
3610 * in the normal fashion. This is a test of the whole picture,
3611 * instead of individual elements.
3612 *
3613 * The first part of the function is _not_ normal overlay usage; it is
3614 * finishing splicing the base overlay device tree into the live tree.
3615 */
3616static __init void of_unittest_overlay_high_level(void)
3617{
3618 struct device_node *last_sibling;
3619 struct device_node *np;
3620 struct device_node *of_symbols;
3621 struct device_node *overlay_base_symbols;
3622 struct device_node **pprev;
3623 struct property *prop;
3624 int ret;
3625
3626 if (!overlay_base_root) {
3627 unittest(0, "overlay_base_root not initialized\n");
3628 return;
3629 }
3630
3631 /*
3632 * Could not fixup phandles in unittest_unflatten_overlay_base()
3633 * because kmalloc() was not yet available.
3634 */
3635 of_overlay_mutex_lock();
3636 of_resolve_phandles(overlay_base_root);
3637 of_overlay_mutex_unlock();
3638
3639
3640 /*
3641 * do not allow overlay_base to duplicate any node already in
3642 * tree, this greatly simplifies the code
3643 */
3644
3645 /*
3646 * remove overlay_base_root node "__local_fixups", after
3647 * being used by of_resolve_phandles()
3648 */
3649 pprev = &overlay_base_root->child;
3650 for (np = overlay_base_root->child; np; np = np->sibling) {
3651 if (of_node_name_eq(np, "__local_fixups__")) {
3652 *pprev = np->sibling;
3653 break;
3654 }
3655 pprev = &np->sibling;
3656 }
3657
3658 /* remove overlay_base_root node "__symbols__" if in live tree */
3659 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3660 if (of_symbols) {
3661 /* will have to graft properties from node into live tree */
3662 pprev = &overlay_base_root->child;
3663 for (np = overlay_base_root->child; np; np = np->sibling) {
3664 if (of_node_name_eq(np, "__symbols__")) {
3665 overlay_base_symbols = np;
3666 *pprev = np->sibling;
3667 break;
3668 }
3669 pprev = &np->sibling;
3670 }
3671 }
3672
3673 for_each_child_of_node(overlay_base_root, np) {
3674 struct device_node *base_child;
3675 for_each_child_of_node(of_root, base_child) {
3676 if (!strcmp(np->full_name, base_child->full_name)) {
3677 unittest(0, "illegal node name in overlay_base %pOFn",
3678 np);
3679 of_node_put(np);
3680 of_node_put(base_child);
3681 return;
3682 }
3683 }
3684 }
3685
3686 /*
3687 * overlay 'overlay_base' is not allowed to have root
3688 * properties, so only need to splice nodes into main device tree.
3689 *
3690 * root node of *overlay_base_root will not be freed, it is lost
3691 * memory.
3692 */
3693
3694 for (np = overlay_base_root->child; np; np = np->sibling)
3695 np->parent = of_root;
3696
3697 mutex_lock(&of_mutex);
3698
3699 for (last_sibling = np = of_root->child; np; np = np->sibling)
3700 last_sibling = np;
3701
3702 if (last_sibling)
3703 last_sibling->sibling = overlay_base_root->child;
3704 else
3705 of_root->child = overlay_base_root->child;
3706
3707 for_each_of_allnodes_from(overlay_base_root, np)
3708 __of_attach_node_sysfs(np);
3709
3710 if (of_symbols) {
3711 struct property *new_prop;
3712 for_each_property_of_node(overlay_base_symbols, prop) {
3713
3714 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3715 if (!new_prop) {
3716 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3717 prop->name);
3718 goto err_unlock;
3719 }
3720 if (__of_add_property(of_symbols, new_prop)) {
3721 kfree(new_prop->name);
3722 kfree(new_prop->value);
3723 kfree(new_prop);
3724 /* "name" auto-generated by unflatten */
3725 if (!strcmp(prop->name, "name"))
3726 continue;
3727 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3728 prop->name);
3729 goto err_unlock;
3730 }
3731 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3732 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3733 prop->name);
3734 goto err_unlock;
3735 }
3736 }
3737 }
3738
3739 mutex_unlock(&of_mutex);
3740
3741
3742 /* now do the normal overlay usage test */
3743
3744 /* --- overlay --- */
3745
3746 EXPECT_BEGIN(KERN_ERR,
3747 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3748 EXPECT_BEGIN(KERN_ERR,
3749 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3750 EXPECT_BEGIN(KERN_ERR,
3751 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3752 EXPECT_BEGIN(KERN_ERR,
3753 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3754 EXPECT_BEGIN(KERN_ERR,
3755 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3756 EXPECT_BEGIN(KERN_ERR,
3757 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3758 EXPECT_BEGIN(KERN_ERR,
3759 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3760 EXPECT_BEGIN(KERN_ERR,
3761 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3762 EXPECT_BEGIN(KERN_ERR,
3763 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3764 EXPECT_BEGIN(KERN_ERR,
3765 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3766 EXPECT_BEGIN(KERN_ERR,
3767 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3768
3769 ret = overlay_data_apply("overlay", NULL);
3770
3771 EXPECT_END(KERN_ERR,
3772 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3773 EXPECT_END(KERN_ERR,
3774 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3775 EXPECT_END(KERN_ERR,
3776 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3777 EXPECT_END(KERN_ERR,
3778 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3779 EXPECT_END(KERN_ERR,
3780 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3781 EXPECT_END(KERN_ERR,
3782 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3783 EXPECT_END(KERN_ERR,
3784 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3785 EXPECT_END(KERN_ERR,
3786 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3787 EXPECT_END(KERN_ERR,
3788 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3789 EXPECT_END(KERN_ERR,
3790 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3791 EXPECT_END(KERN_ERR,
3792 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3793
3794 unittest(ret, "Adding overlay 'overlay' failed\n");
3795
3796 /* --- overlay_bad_add_dup_node --- */
3797
3798 EXPECT_BEGIN(KERN_ERR,
3799 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3800 EXPECT_BEGIN(KERN_ERR,
3801 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3802 EXPECT_BEGIN(KERN_ERR,
3803 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name");
3804 EXPECT_BEGIN(KERN_ERR,
3805 "OF: Error reverting changeset (-19)");
3806
3807 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3808 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3809
3810 EXPECT_END(KERN_ERR,
3811 "OF: Error reverting changeset (-19)");
3812 EXPECT_END(KERN_ERR,
3813 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name");
3814 EXPECT_END(KERN_ERR,
3815 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3816 EXPECT_END(KERN_ERR,
3817 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3818
3819 /* --- overlay_bad_add_dup_prop --- */
3820
3821 EXPECT_BEGIN(KERN_ERR,
3822 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3823 EXPECT_BEGIN(KERN_ERR,
3824 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3825 EXPECT_BEGIN(KERN_ERR,
3826 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3827 EXPECT_BEGIN(KERN_ERR,
3828 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name");
3829 EXPECT_BEGIN(KERN_ERR,
3830 "OF: Error reverting changeset (-19)");
3831
3832 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3833 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3834
3835 EXPECT_END(KERN_ERR,
3836 "OF: Error reverting changeset (-19)");
3837 EXPECT_END(KERN_ERR,
3838 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name");
3839 EXPECT_END(KERN_ERR,
3840 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3841 EXPECT_END(KERN_ERR,
3842 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3843 EXPECT_END(KERN_ERR,
3844 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3845
3846 /* --- overlay_bad_phandle --- */
3847
3848 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3849 "Adding overlay 'overlay_bad_phandle' failed\n");
3850
3851 /* --- overlay_bad_symbol --- */
3852
3853 EXPECT_BEGIN(KERN_ERR,
3854 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name");
3855 EXPECT_BEGIN(KERN_ERR,
3856 "OF: Error reverting changeset (-19)");
3857
3858 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3859 "Adding overlay 'overlay_bad_symbol' failed\n");
3860
3861 EXPECT_END(KERN_ERR,
3862 "OF: Error reverting changeset (-19)");
3863 EXPECT_END(KERN_ERR,
3864 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name");
3865
3866 /* --- overlay_bad_unresolved --- */
3867
3868 EXPECT_BEGIN(KERN_ERR,
3869 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table");
3870 EXPECT_BEGIN(KERN_ERR,
3871 "OF: resolver: overlay phandle fixup failed: -22");
3872
3873 unittest(overlay_data_apply("overlay_bad_unresolved", NULL),
3874 "Adding overlay 'overlay_bad_unresolved' failed\n");
3875
3876 EXPECT_END(KERN_ERR,
3877 "OF: resolver: overlay phandle fixup failed: -22");
3878 EXPECT_END(KERN_ERR,
3879 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table");
3880
3881 return;
3882
3883err_unlock:
3884 mutex_unlock(&of_mutex);
3885}
3886
3887static int of_unittest_pci_dev_num;
3888static int of_unittest_pci_child_num;
3889
3890/*
3891 * PCI device tree node test driver
3892 */
3893static const struct pci_device_id testdrv_pci_ids[] = {
3894 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */
3895 { 0, }
3896};
3897
3898static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3899{
3900 struct overlay_info *info;
3901 struct device_node *dn;
3902 int ret, ovcs_id;
3903 u32 size;
3904
3905 dn = pdev->dev.of_node;
3906 if (!dn) {
3907 dev_err(&pdev->dev, "does not find bus endpoint");
3908 return -EINVAL;
3909 }
3910
3911 for (info = overlays; info && info->name; info++) {
3912 if (!strcmp(info->name, "overlay_pci_node"))
3913 break;
3914 }
3915 if (!info || !info->name) {
3916 dev_err(&pdev->dev, "no overlay data for overlay_pci_node");
3917 return -ENODEV;
3918 }
3919
3920 size = info->dtbo_end - info->dtbo_begin;
3921 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn);
3922 of_node_put(dn);
3923 if (ret)
3924 return ret;
3925
3926 of_platform_default_populate(dn, NULL, &pdev->dev);
3927 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id);
3928
3929 return 0;
3930}
3931
3932static void testdrv_remove(struct pci_dev *pdev)
3933{
3934 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev);
3935
3936 of_platform_depopulate(&pdev->dev);
3937 of_overlay_remove(&ovcs_id);
3938}
3939
3940static struct pci_driver testdrv_driver = {
3941 .name = "pci_dt_testdrv",
3942 .id_table = testdrv_pci_ids,
3943 .probe = testdrv_probe,
3944 .remove = testdrv_remove,
3945};
3946
3947static int unittest_pci_probe(struct platform_device *pdev)
3948{
3949 struct resource *res;
3950 struct device *dev;
3951 u64 exp_addr;
3952
3953 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3954 if (!res)
3955 return -ENODEV;
3956
3957 dev = &pdev->dev;
3958 while (dev && !dev_is_pci(dev))
3959 dev = dev->parent;
3960 if (!dev) {
3961 pr_err("unable to find parent device\n");
3962 return -ENODEV;
3963 }
3964
3965 exp_addr = pci_resource_start(to_pci_dev(dev), 0) + 0x100;
3966 unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n",
3967 (u64)res->start, exp_addr);
3968
3969 of_unittest_pci_child_num++;
3970
3971 return 0;
3972}
3973
3974static const struct of_device_id unittest_pci_of_match[] = {
3975 { .compatible = "unittest-pci" },
3976 { }
3977};
3978
3979static struct platform_driver unittest_pci_driver = {
3980 .probe = unittest_pci_probe,
3981 .driver = {
3982 .name = "unittest-pci",
3983 .of_match_table = unittest_pci_of_match,
3984 },
3985};
3986
3987static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add)
3988{
3989 struct device_node *pnp, *np = NULL;
3990 struct device *child_dev;
3991 char *path = NULL;
3992 const __be32 *reg;
3993 int rc = 0;
3994
3995 pnp = pdev->dev.of_node;
3996 unittest(pnp, "Failed creating PCI dt node\n");
3997 if (!pnp)
3998 return -ENODEV;
3999
4000 if (add) {
4001 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100", pnp);
4002 np = of_find_node_by_path(path);
4003 unittest(np, "Failed to get unittest-pci node under PCI node\n");
4004 if (!np) {
4005 rc = -ENODEV;
4006 goto failed;
4007 }
4008
4009 reg = of_get_property(np, "reg", NULL);
4010 unittest(reg, "Failed to get reg property\n");
4011 if (!reg)
4012 rc = -ENODEV;
4013 } else {
4014 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0", pnp);
4015 np = of_find_node_by_path(path);
4016 unittest(!np, "Child device tree node is not removed\n");
4017 child_dev = device_find_any_child(&pdev->dev);
4018 unittest(!child_dev, "Child device is not removed\n");
4019 }
4020
4021failed:
4022 kfree(path);
4023 if (np)
4024 of_node_put(np);
4025
4026 return rc;
4027}
4028
4029static void __init of_unittest_pci_node(void)
4030{
4031 struct pci_dev *pdev = NULL;
4032 int rc;
4033
4034 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES))
4035 return;
4036
4037 rc = pci_register_driver(&testdrv_driver);
4038 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc);
4039 if (rc)
4040 return;
4041
4042 rc = platform_driver_register(&unittest_pci_driver);
4043 if (unittest(!rc, "Failed to register unittest pci driver\n")) {
4044 pci_unregister_driver(&testdrv_driver);
4045 return;
4046 }
4047
4048 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) {
4049 of_unittest_pci_node_verify(pdev, true);
4050 of_unittest_pci_dev_num++;
4051 }
4052 if (pdev)
4053 pci_dev_put(pdev);
4054
4055 unittest(of_unittest_pci_dev_num,
4056 "No test PCI device been found. Please run QEMU with '-device pci-testdev'\n");
4057 unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num,
4058 "Child device number %d is not expected %d", of_unittest_pci_child_num,
4059 of_unittest_pci_dev_num);
4060
4061 platform_driver_unregister(&unittest_pci_driver);
4062 pci_unregister_driver(&testdrv_driver);
4063
4064 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL)
4065 of_unittest_pci_node_verify(pdev, false);
4066 if (pdev)
4067 pci_dev_put(pdev);
4068}
4069#else
4070
4071static inline __init void of_unittest_overlay_high_level(void) {}
4072static inline __init void of_unittest_pci_node(void) { }
4073
4074#endif
4075
4076static int __init of_unittest(void)
4077{
4078 struct device_node *np;
4079 int res;
4080
4081 pr_info("start of unittest - you will see error messages\n");
4082
4083 /* Taint the kernel so we know we've run tests. */
4084 add_taint(TAINT_TEST, LOCKDEP_STILL_OK);
4085
4086 /* adding data for unittest */
4087 res = unittest_data_add();
4088 if (res)
4089 return res;
4090 if (!of_aliases)
4091 of_aliases = of_find_node_by_path("/aliases");
4092
4093 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
4094 if (!np) {
4095 pr_info("No testcase data in device tree; not running tests\n");
4096 return 0;
4097 }
4098 of_node_put(np);
4099
4100 of_unittest_check_tree_linkage();
4101 of_unittest_check_phandles();
4102 of_unittest_find_node_by_name();
4103 of_unittest_dynamic();
4104 of_unittest_parse_phandle_with_args();
4105 of_unittest_parse_phandle_with_args_map();
4106 of_unittest_printf();
4107 of_unittest_property_string();
4108 of_unittest_property_copy();
4109 of_unittest_changeset();
4110 of_unittest_parse_interrupts();
4111 of_unittest_parse_interrupts_extended();
4112 of_unittest_dma_get_max_cpu_address();
4113 of_unittest_parse_dma_ranges();
4114 of_unittest_pci_dma_ranges();
4115 of_unittest_bus_ranges();
4116 of_unittest_bus_3cell_ranges();
4117 of_unittest_reg();
4118 of_unittest_translate_addr();
4119 of_unittest_match_node();
4120 of_unittest_platform_populate();
4121 of_unittest_overlay();
4122 of_unittest_lifecycle();
4123 of_unittest_pci_node();
4124
4125 /* Double check linkage after removing testcase data */
4126 of_unittest_check_tree_linkage();
4127
4128 of_unittest_overlay_high_level();
4129
4130 pr_info("end of unittest - %i passed, %i failed\n",
4131 unittest_results.passed, unittest_results.failed);
4132
4133 return 0;
4134}
4135late_initcall(of_unittest);