1 // SPDX-License-Identifier: GPL-2.0
3 * Self tests for device tree subsystem
6 #define pr_fmt(fmt) "### dt-test ### " fmt
8 #include <linux/memblock.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>
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>
28 #include <linux/i2c.h>
29 #include <linux/i2c-mux.h>
30 #include <linux/gpio/driver.h>
32 #include <linux/bitops.h>
34 #include "of_private.h"
36 static struct unittest_results {
41 #define unittest(result, fmt, ...) ({ \
42 bool failed = !(result); \
44 unittest_results.failed++; \
45 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
47 unittest_results.passed++; \
48 pr_info("pass %s():%i\n", __func__, __LINE__); \
54 #define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref)
56 #define OF_KREF_READ(NODE) 1
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.
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().
68 #define EXPECT_BEGIN(level, fmt, ...) \
69 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
71 #define EXPECT_END(level, fmt, ...) \
72 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
74 #define EXPECT_NOT_BEGIN(level, fmt, ...) \
75 printk(level pr_fmt("EXPECT_NOT \\ : ") fmt, ##__VA_ARGS__)
77 #define EXPECT_NOT_END(level, fmt, ...) \
78 printk(level pr_fmt("EXPECT_NOT / : ") fmt, ##__VA_ARGS__)
80 static void __init of_unittest_find_node_by_name(void)
82 struct device_node *np;
83 const char *options, *name;
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");
92 /* Test if trailing '/' works */
93 np = of_find_node_by_path("/testcase-data/");
94 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
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");
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");
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");
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");
121 np = of_find_node_by_path("/testcase-data/missing-path");
122 unittest(!np, "non-existent path returned node %pOF\n", np);
125 np = of_find_node_by_path("missing-alias");
126 unittest(!np, "non-existent alias returned node %pOF\n", np);
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);
133 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
134 unittest(np && !strcmp("testoption", options),
135 "option path test failed\n");
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");
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");
148 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
149 unittest(np, "NULL option path test failed\n");
152 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
154 unittest(np && !strcmp("testaliasoption", options),
155 "option alias path test failed\n");
158 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
160 unittest(np && !strcmp("test/alias/option", options),
161 "option alias path test, subcase #1 failed\n");
164 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
165 unittest(np, "NULL option alias path test failed\n");
168 options = "testoption";
169 np = of_find_node_opts_by_path("testcase-alias", &options);
170 unittest(np && !options, "option clearing test failed\n");
173 options = "testoption";
174 np = of_find_node_opts_by_path("/", &options);
175 unittest(np && !options, "option clearing root node test failed\n");
179 static void __init of_unittest_dynamic(void)
181 struct device_node *np;
182 struct property *prop;
184 np = of_find_node_by_path("/testcase-data");
186 pr_err("missing testcase data\n");
190 /* Array of 4 properties for the purpose of testing */
191 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
193 unittest(0, "kzalloc() failed\n");
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");
203 /* Try to add an existing property - should fail */
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");
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");
217 /* Try to modify non-existent property - should pass*/
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");
225 /* Remove property - should pass */
226 unittest(of_remove_property(np, prop) == 0,
227 "Removing a property should have passed\n");
229 /* Adding very large property - should pass */
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");
236 unittest(of_add_property(np, prop) == 0,
237 "Adding a large property should have passed\n");
240 static int __init of_unittest_check_node_linkage(struct device_node *np)
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",
251 rc = of_unittest_check_node_linkage(child);
260 static void __init of_unittest_check_tree_linkage(void)
262 struct device_node *np;
263 int allnode_count = 0, child_count;
268 for_each_of_allnodes(np)
270 child_count = of_unittest_check_node_linkage(of_root);
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);
279 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
280 const char *expected)
286 buf_size = strlen(expected) + 10;
287 buf = kmalloc(buf_size, GFP_KERNEL);
291 /* Baseline; check conversion with a large size limit */
292 memset(buf, 0xff, buf_size);
293 size = snprintf(buf, buf_size - 2, fmt, np);
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",
300 /* Make sure length limits work */
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);
313 static void __init of_unittest_printf(void)
315 struct device_node *np;
316 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
317 char phandle_str[16] = "";
319 np = of_find_node_by_path(full_name);
321 unittest(np, "testcase data missing\n");
325 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
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\"");
348 struct hlist_node node;
349 struct device_node *np;
352 static DEFINE_HASHTABLE(phandle_ht, 8);
353 static void __init of_unittest_check_phandles(void)
355 struct device_node *np;
356 struct node_hash *nh;
357 struct hlist_node *tmp;
358 int i, dup_count = 0, phandle_count = 0;
360 for_each_of_allnodes(np) {
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);
373 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
378 hash_add(phandle_ht, &nh->node, np->phandle);
381 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
382 dup_count, phandle_count);
385 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
391 static void __init of_unittest_parse_phandle_with_args(void)
393 struct device_node *np;
394 struct of_phandle_args args;
397 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
399 pr_err("missing testcase data\n");
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);
406 for (i = 0; i < 8; i++) {
409 memset(&args, 0, sizeof(args));
410 rc = of_parse_phandle_with_args(np, "phandle-list",
411 "#phandle-cells", i, &args);
413 /* Test the values from tests-phandle.dtsi */
417 passed &= (args.args_count == 1);
418 passed &= (args.args[0] == (i + 1));
422 passed &= (args.args_count == 2);
423 passed &= (args.args[0] == (i + 1));
424 passed &= (args.args[1] == 0);
427 passed &= (rc == -ENOENT);
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);
438 passed &= (args.args_count == 2);
439 passed &= (args.args[0] == (i + 1));
440 passed &= (args.args[1] == 100);
444 passed &= (args.args_count == 0);
448 passed &= (args.args_count == 1);
449 passed &= (args.args[0] == (i + 1));
452 passed &= (rc == -ENOENT);
458 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
462 of_node_put(args.np);
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",
472 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
474 /* Check for missing cells property */
475 memset(&args, 0, sizeof(args));
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");
480 rc = of_parse_phandle_with_args(np, "phandle-list",
481 "#phandle-cells-missing", 0, &args);
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");
486 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
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");
491 rc = of_count_phandle_with_args(np, "phandle-list",
492 "#phandle-cells-missing");
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");
497 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
499 /* Check for bad phandle in list */
500 memset(&args, 0, sizeof(args));
502 EXPECT_BEGIN(KERN_INFO,
503 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
505 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
506 "#phandle-cells", 0, &args);
508 EXPECT_END(KERN_INFO,
509 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
511 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
513 EXPECT_BEGIN(KERN_INFO,
514 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
516 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
519 EXPECT_END(KERN_INFO,
520 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
522 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
524 /* Check for incorrectly formed argument list */
525 memset(&args, 0, sizeof(args));
527 EXPECT_BEGIN(KERN_INFO,
528 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
530 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
531 "#phandle-cells", 1, &args);
533 EXPECT_END(KERN_INFO,
534 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
536 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
538 EXPECT_BEGIN(KERN_INFO,
539 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
541 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
544 EXPECT_END(KERN_INFO,
545 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1");
547 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
550 static void __init of_unittest_parse_phandle_with_args_map(void)
552 struct device_node *np, *p[6] = {};
553 struct of_phandle_args args;
554 unsigned int prefs[6];
557 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
559 pr_err("missing testcase data\n");
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) {
571 pr_err("missing testcase data\n");
574 prefs[i] = OF_KREF_READ(p[i]);
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);
580 for (i = 0; i < 9; i++) {
583 memset(&args, 0, sizeof(args));
584 rc = of_parse_phandle_with_args_map(np, "phandle-list",
585 "phandle", i, &args);
587 /* Test the values from tests-phandle.dtsi */
591 passed &= (args.np == p[1]);
592 passed &= (args.args_count == 1);
593 passed &= (args.args[0] == 1);
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);
604 passed &= (rc == -ENOENT);
608 passed &= (args.np == p[0]);
609 passed &= (args.args_count == 0);
613 passed &= (args.np == p[1]);
614 passed &= (args.args_count == 1);
615 passed &= (args.args[0] == 3);
619 passed &= (args.np == p[0]);
620 passed &= (args.args_count == 0);
624 passed &= (args.np == p[2]);
625 passed &= (args.args_count == 2);
626 passed &= (args.args[0] == 15);
627 passed &= (args.args[1] == 0x20);
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);
638 passed &= (rc == -ENOENT);
644 unittest(passed, "index %i - data error on node %s rc=%i\n",
645 i, args.np->full_name, rc);
648 of_node_put(args.np);
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);
657 /* Check for missing cells,map,mask property */
658 memset(&args, 0, sizeof(args));
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");
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");
668 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
670 /* Check for bad phandle in list */
671 memset(&args, 0, sizeof(args));
673 EXPECT_BEGIN(KERN_INFO,
674 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");
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");
681 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
683 /* Check for incorrectly formed argument list */
684 memset(&args, 0, sizeof(args));
686 EXPECT_BEGIN(KERN_INFO,
687 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1");
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");
694 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
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]));
704 static void __init of_unittest_property_string(void)
706 const char *strings[4];
707 struct device_node *np;
710 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
712 pr_err("No testcase data in device tree\n");
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);
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);
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);
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);
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);
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);
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);
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: */
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);
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]);
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))
789 static void __init of_unittest_property_copy(void)
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;
796 new = __of_prop_dup(&p1, GFP_KERNEL);
797 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
802 new = __of_prop_dup(&p2, GFP_KERNEL);
803 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
810 static void __init of_unittest_changeset(void)
812 #ifdef CONFIG_OF_DYNAMIC
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;
826 n1 = __of_node_dup(NULL, "n1");
827 unittest(n1, "testcase setup failure\n");
829 n2 = __of_node_dup(NULL, "n2");
830 unittest(n2, "testcase setup failure\n");
832 n21 = __of_node_dup(NULL, "n21");
833 unittest(n21, "testcase setup failure %p\n", n21);
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");
839 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
840 unittest(ppadd, "testcase setup failure\n");
842 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
843 unittest(ppname_n1, "testcase setup failure\n");
845 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
846 unittest(ppname_n2, "testcase setup failure\n");
848 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
849 unittest(ppname_n21, "testcase setup failure\n");
851 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
852 unittest(ppupdate, "testcase setup failure\n");
859 ppremove = of_find_property(parent, "prop-remove", NULL);
860 unittest(ppremove, "failed to find removal prop");
862 of_changeset_init(&chgset);
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");
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");
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");
873 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
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");
890 unittest(!of_changeset_apply(&chgset), "apply failed\n");
892 of_node_put(nchangeset);
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);
898 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22")),
899 "'%pOF' not added\n", n22);
902 unittest(!of_changeset_revert(&chgset), "revert failed\n");
904 unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21"),
905 "'%pOF' still present after revert\n", n21);
907 ppremove = of_find_property(parent, "prop-remove", NULL);
908 unittest(ppremove, "failed to find removed prop after revert\n");
910 ret = of_property_read_string(parent, "prop-update", &propstr);
911 unittest(!ret, "failed to find updated prop after revert\n");
913 unittest(strcmp(propstr, "hello") == 0, "original value not in updated property after revert");
915 of_changeset_destroy(&chgset);
924 static void __init of_unittest_dma_get_max_cpu_address(void)
926 struct device_node *np;
927 phys_addr_t cpu_addr;
929 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
932 np = of_find_node_by_path("/testcase-data/address-tests");
934 pr_err("missing testcase data\n");
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);
944 static void __init of_unittest_dma_ranges_one(const char *path,
945 u64 expect_dma_addr, u64 expect_paddr)
947 #ifdef CONFIG_HAS_DMA
948 struct device_node *np;
949 const struct bus_dma_region *map = NULL;
952 np = of_find_node_by_path(path);
954 pr_err("missing testcase data\n");
958 rc = of_dma_get_range(np, &map);
960 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
965 struct device *dev_bogus;
967 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL);
969 unittest(0, "kzalloc() failed\n");
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);
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);
992 static void __init of_unittest_parse_dma_ranges(void)
994 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
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);
1003 static void __init of_unittest_pci_dma_ranges(void)
1005 struct device_node *np;
1006 struct of_pci_range range;
1007 struct of_pci_range_parser parser;
1010 if (!IS_ENABLED(CONFIG_PCI))
1013 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
1015 pr_err("missing testcase data\n");
1019 if (of_pci_dma_range_parser_init(&parser, np)) {
1020 pr_err("missing dma-ranges property\n");
1025 * Get the dma-ranges from the device tree
1027 for_each_of_pci_range(&parser, &range) {
1029 unittest(range.size == 0x10000000,
1030 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
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);
1039 unittest(range.size == 0x10000000,
1040 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
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);
1055 static void __init of_unittest_bus_ranges(void)
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;
1063 np = of_find_node_by_path("/testcase-data/address-tests");
1065 pr_err("missing testcase data\n");
1069 if (of_range_parser_init(&parser, np)) {
1070 pr_err("missing ranges property\n");
1074 ret = of_range_to_resource(np, 1, &res);
1075 unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n",
1077 unittest(resource_type(&res) == IORESOURCE_MEM,
1078 "of_range_to_resource wrong resource type on node %pOF res=%pR\n",
1080 unittest(res.start == 0xd0000000,
1081 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1083 unittest(resource_size(&res) == 0x20000000,
1084 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
1087 count = of_range_count(&parser);
1088 unittest(count == 2,
1089 "of_range_count wrong size on node %pOF count=%d\n",
1093 * Get the "ranges" from the device tree
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);
1100 unittest(range.size == 0x50000000,
1101 "for_each_of_range wrong size on node %pOF size=%llx\n",
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);
1110 unittest(range.size == 0x20000000,
1111 "for_each_of_range wrong size on node %pOF size=%llx\n",
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);
1126 static void __init of_unittest_bus_3cell_ranges(void)
1128 struct device_node *np;
1129 struct of_range range;
1130 struct of_range_parser parser;
1133 np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000");
1135 pr_err("missing testcase data\n");
1139 if (of_range_parser_init(&parser, np)) {
1140 pr_err("missing ranges property\n");
1145 * Get the "ranges" from the device tree
1147 for_each_of_range(&parser, &range) {
1149 unittest(range.flags == 0xf00baa,
1150 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1152 unittest(range.size == 0x100000,
1153 "for_each_of_range wrong size on node %pOF size=%llx\n",
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);
1162 unittest(range.flags == 0xf00bee,
1163 "for_each_of_range wrong flags on node %pOF flags=%x\n",
1165 unittest(range.size == 0x200000,
1166 "for_each_of_range wrong size on node %pOF size=%llx\n",
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);
1181 static void __init of_unittest_reg(void)
1183 struct device_node *np;
1187 np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000");
1189 pr_err("missing testcase data\n");
1193 ret = of_property_read_reg(np, 0, &addr, &size);
1194 unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n",
1196 unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n",
1202 struct of_unittest_expected_res {
1204 struct resource res;
1207 static 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)
1211 const struct of_unittest_expected_res *expected;
1212 struct device_node *np;
1213 struct resource res;
1217 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
1220 np = of_find_node_by_path(node_path);
1222 pr_err("missing testcase data (%s)\n", node_path);
1227 count = tab_exp_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);
1243 static 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) },
1250 static 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) },
1258 static 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) },
1263 static void __init of_unittest_translate_addr(void)
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));
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));
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));
1278 static void __init of_unittest_parse_interrupts(void)
1280 struct device_node *np;
1281 struct of_phandle_args args;
1284 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1287 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1289 pr_err("missing testcase data\n");
1293 for (i = 0; i < 4; i++) {
1296 memset(&args, 0, sizeof(args));
1297 rc = of_irq_parse_one(np, i, &args);
1300 passed &= (args.args_count == 1);
1301 passed &= (args.args[0] == (i + 1));
1303 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1308 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1310 pr_err("missing testcase data\n");
1314 for (i = 0; i < 4; i++) {
1317 memset(&args, 0, sizeof(args));
1318 rc = of_irq_parse_one(np, i, &args);
1320 /* Test the values from tests-phandle.dtsi */
1324 passed &= (args.args_count == 1);
1325 passed &= (args.args[0] == 9);
1329 passed &= (args.args_count == 3);
1330 passed &= (args.args[0] == 10);
1331 passed &= (args.args[1] == 11);
1332 passed &= (args.args[2] == 12);
1336 passed &= (args.args_count == 2);
1337 passed &= (args.args[0] == 13);
1338 passed &= (args.args[1] == 14);
1342 passed &= (args.args_count == 2);
1343 passed &= (args.args[0] == 15);
1344 passed &= (args.args[1] == 16);
1349 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1355 static void __init of_unittest_parse_interrupts_extended(void)
1357 struct device_node *np;
1358 struct of_phandle_args args;
1361 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1364 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1366 pr_err("missing testcase data\n");
1370 for (i = 0; i < 7; i++) {
1373 memset(&args, 0, sizeof(args));
1374 rc = of_irq_parse_one(np, i, &args);
1376 /* Test the values from tests-phandle.dtsi */
1380 passed &= (args.args_count == 1);
1381 passed &= (args.args[0] == 1);
1385 passed &= (args.args_count == 3);
1386 passed &= (args.args[0] == 2);
1387 passed &= (args.args[1] == 3);
1388 passed &= (args.args[2] == 4);
1392 passed &= (args.args_count == 2);
1393 passed &= (args.args[0] == 5);
1394 passed &= (args.args[1] == 6);
1398 passed &= (args.args_count == 1);
1399 passed &= (args.args[0] == 9);
1403 passed &= (args.args_count == 3);
1404 passed &= (args.args[0] == 10);
1405 passed &= (args.args[1] == 11);
1406 passed &= (args.args[2] == 12);
1410 passed &= (args.args_count == 2);
1411 passed &= (args.args[0] == 13);
1412 passed &= (args.args[1] == 14);
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
1422 passed &= (args.args_count == 1);
1423 passed &= (args.args[0] == 15);
1429 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1435 static 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 */
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", },
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", },
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", },
1470 static void __init of_unittest_match_node(void)
1472 struct device_node *np;
1473 const struct of_device_id *match;
1476 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1477 np = of_find_node_by_path(match_node_tests[i].path);
1479 unittest(0, "missing testcase node %s\n",
1480 match_node_tests[i].path);
1484 match = of_match_node(match_node_table, np);
1486 unittest(0, "%s didn't match anything\n",
1487 match_node_tests[i].path);
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);
1497 unittest(1, "passed");
1501 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2);
1502 static const struct platform_device_info test_bus_info = {
1503 .name = "unittest-bus",
1505 static void __init of_unittest_platform_populate(void)
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", },
1515 np = of_find_node_by_path("/testcase-data");
1516 of_platform_default_populate(np, NULL, NULL);
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");
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);
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");
1533 EXPECT_BEGIN(KERN_INFO,
1534 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1536 irq = platform_get_irq(pdev, 0);
1538 EXPECT_END(KERN_INFO,
1539 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found");
1541 unittest(irq < 0 && irq != -EPROBE_DEFER,
1542 "device parsing error failed - %d\n", irq);
1545 np = of_find_node_by_path("/testcase-data/platform-tests");
1546 unittest(np, "No testcase data in device tree\n");
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);
1557 test_bus->dev.of_node = np;
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.
1566 platform_device_add_resources(test_bus, &test_bus_res, 1);
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);
1573 "Could not create device for node '%pOFn'\n",
1575 platform_device_put(pdev);
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",
1587 platform_device_unregister(test_bus);
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.
1596 * @np: node whose properties are being added to the live tree
1597 * @dup: node present in live tree to be updated
1599 static void update_node_properties(struct device_node *np,
1600 struct device_node *dup)
1602 struct property *prop;
1603 struct property *save_next;
1604 struct device_node *child;
1607 for_each_child_of_node(np, child)
1608 child->parent = dup;
1611 * "unittest internal error: unable to add testdata property"
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.
1624 * open code for_each_property_of_node() because of_add_property()
1625 * sets prop->next to NULL
1627 for (prop = np->properties; prop != NULL; prop = save_next) {
1628 save_next = prop->next;
1629 ret = of_add_property(dup, prop);
1631 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1633 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
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.
1647 * @np: Node to attach to live tree
1649 static void attach_node_and_children(struct device_node *np)
1651 struct device_node *next, *dup, *child;
1652 unsigned long flags;
1653 const char *full_name;
1655 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1659 if (!strcmp(full_name, "/__local_fixups__") ||
1660 !strcmp(full_name, "/__fixups__")) {
1665 dup = of_find_node_by_path(full_name);
1668 update_node_properties(np, dup);
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);
1682 __of_attach_node_sysfs(np);
1683 mutex_unlock(&of_mutex);
1686 next = child->sibling;
1687 attach_node_and_children(child);
1693 * unittest_data_add - Reads, copies data from
1694 * linked tree and attaches it to the live tree
1696 static int __init unittest_data_add(void)
1698 void *unittest_data;
1699 void *unittest_data_align;
1700 struct device_node *unittest_data_node = NULL, *np;
1702 * __dtbo_testcases_begin[] and __dtbo_testcases_end[] are magically
1703 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
1705 extern uint8_t __dtbo_testcases_begin[];
1706 extern uint8_t __dtbo_testcases_end[];
1707 const int size = __dtbo_testcases_end - __dtbo_testcases_begin;
1712 pr_warn("%s: testcases is empty\n", __func__);
1717 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1721 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1722 memcpy(unittest_data_align, __dtbo_testcases_begin, size);
1724 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1726 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1727 kfree(unittest_data);
1730 if (!unittest_data_node) {
1731 pr_warn("%s: testcases tree is empty\n", __func__);
1732 kfree(unittest_data);
1737 * This lock normally encloses of_resolve_phandles()
1739 of_overlay_mutex_lock();
1741 rc = of_resolve_phandles(unittest_data_node);
1743 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1744 of_overlay_mutex_unlock();
1748 /* attach the sub-tree to live tree */
1750 pr_warn("%s: no live tree to attach sub-tree\n", __func__);
1751 kfree(unittest_data);
1755 EXPECT_BEGIN(KERN_INFO,
1756 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1758 np = unittest_data_node->child;
1760 struct device_node *next = np->sibling;
1762 np->parent = of_root;
1763 /* this will clear OF_DETACHED in np and children */
1764 attach_node_and_children(np);
1768 EXPECT_END(KERN_INFO,
1769 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1771 of_overlay_mutex_unlock();
1776 #ifdef CONFIG_OF_OVERLAY
1777 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id);
1779 static int unittest_probe(struct platform_device *pdev)
1781 struct device *dev = &pdev->dev;
1782 struct device_node *np = dev->of_node;
1785 dev_err(dev, "No OF data for device\n");
1790 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1792 of_platform_populate(np, NULL, NULL, &pdev->dev);
1797 static void unittest_remove(struct platform_device *pdev)
1799 struct device *dev = &pdev->dev;
1800 struct device_node *np = dev->of_node;
1802 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1805 static const struct of_device_id unittest_match[] = {
1806 { .compatible = "unittest", },
1810 static struct platform_driver unittest_driver = {
1811 .probe = unittest_probe,
1812 .remove_new = unittest_remove,
1815 .of_match_table = unittest_match,
1819 /* get the platform device instantiated at the path */
1820 static struct platform_device *of_path_to_platform_device(const char *path)
1822 struct device_node *np;
1823 struct platform_device *pdev;
1825 np = of_find_node_by_path(path);
1829 pdev = of_find_device_by_node(np);
1835 /* find out if a platform device exists at that path */
1836 static int of_path_platform_device_exists(const char *path)
1838 struct platform_device *pdev;
1840 pdev = of_path_to_platform_device(path);
1841 platform_device_put(pdev);
1842 return pdev != NULL;
1845 #ifdef CONFIG_OF_GPIO
1847 struct unittest_gpio_dev {
1848 struct gpio_chip chip;
1851 static int unittest_gpio_chip_request_count;
1852 static int unittest_gpio_probe_count;
1853 static int unittest_gpio_probe_pass_count;
1855 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1857 unittest_gpio_chip_request_count++;
1859 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1860 unittest_gpio_chip_request_count);
1864 static int unittest_gpio_probe(struct platform_device *pdev)
1866 struct unittest_gpio_dev *devptr;
1869 unittest_gpio_probe_count++;
1871 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1875 platform_set_drvdata(pdev, devptr);
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;
1883 ret = gpiochip_add_data(&devptr->chip, NULL);
1886 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret);
1889 unittest_gpio_probe_pass_count++;
1893 static void unittest_gpio_remove(struct platform_device *pdev)
1895 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev);
1896 struct device *dev = &pdev->dev;
1898 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode);
1900 if (devptr->chip.base != -1)
1901 gpiochip_remove(&devptr->chip);
1906 static const struct of_device_id unittest_gpio_id[] = {
1907 { .compatible = "unittest-gpio", },
1911 static struct platform_driver unittest_gpio_driver = {
1912 .probe = unittest_gpio_probe,
1913 .remove_new = unittest_gpio_remove,
1915 .name = "unittest-gpio",
1916 .of_match_table = unittest_gpio_id,
1920 static void __init of_unittest_overlay_gpio(void)
1922 int chip_request_count;
1923 int probe_pass_count;
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.
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().
1936 * - apply overlay_gpio_01
1937 * - apply overlay_gpio_02a
1938 * - apply overlay_gpio_02b
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
1947 probe_pass_count = unittest_gpio_probe_pass_count;
1948 chip_request_count = unittest_gpio_chip_request_count;
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
1956 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1957 "Adding overlay 'overlay_gpio_01' failed\n");
1959 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1960 "Adding overlay 'overlay_gpio_02a' failed\n");
1962 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1963 "Adding overlay 'overlay_gpio_02b' failed\n");
1965 ret = platform_driver_register(&unittest_gpio_driver);
1966 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1969 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1970 "unittest_gpio_probe() failed or not called\n");
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);
1977 * tests: apply overlays after registering driver
1979 * Similar to a driver built-in to the kernel, the
1980 * driver is registered before applying the overlays.
1982 * overlay_gpio_03 contains gpio node and child gpio hog node
1984 * - apply overlay_gpio_03
1986 * apply overlay will result in
1987 * - probe and processing gpio hog.
1990 probe_pass_count = unittest_gpio_probe_pass_count;
1991 chip_request_count = unittest_gpio_chip_request_count;
1993 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1995 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1996 "Adding overlay 'overlay_gpio_03' failed\n");
1998 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1999 "unittest_gpio_probe() failed or not called\n");
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);
2006 * overlay_gpio_04a contains gpio node
2008 * - apply overlay_gpio_04a
2010 * apply the overlay will result in
2011 * - probe for overlay_gpio_04a
2014 probe_pass_count = unittest_gpio_probe_pass_count;
2015 chip_request_count = unittest_gpio_chip_request_count;
2017 /* overlay_gpio_04a contains gpio node */
2019 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
2020 "Adding overlay 'overlay_gpio_04a' failed\n");
2022 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
2023 "unittest_gpio_probe() failed or not called\n");
2026 * overlay_gpio_04b contains child gpio hog node
2028 * - apply overlay_gpio_04b
2030 * apply the overlay will result in
2031 * - processing gpio for overlay_gpio_04b
2034 /* overlay_gpio_04b contains child gpio hog node */
2036 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
2037 "Adding overlay 'overlay_gpio_04b' failed\n");
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);
2046 static void __init of_unittest_overlay_gpio(void)
2053 #if IS_BUILTIN(CONFIG_I2C)
2055 /* get the i2c client device instantiated at the path */
2056 static struct i2c_client *of_path_to_i2c_client(const char *path)
2058 struct device_node *np;
2059 struct i2c_client *client;
2061 np = of_find_node_by_path(path);
2065 client = of_find_i2c_device_by_node(np);
2071 /* find out if a i2c client device exists at that path */
2072 static int of_path_i2c_client_exists(const char *path)
2074 struct i2c_client *client;
2076 client = of_path_to_i2c_client(path);
2078 put_device(&client->dev);
2079 return client != NULL;
2082 static int of_path_i2c_client_exists(const char *path)
2093 static int of_path_device_type_exists(const char *path,
2094 enum overlay_type ovtype)
2098 return of_path_platform_device_exists(path);
2100 return of_path_i2c_client_exists(path);
2105 static const char *unittest_path(int nr, enum overlay_type ovtype)
2108 static char buf[256];
2112 base = "/testcase-data/overlay-node/test-bus";
2115 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
2121 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
2122 buf[sizeof(buf) - 1] = '\0';
2126 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
2130 path = unittest_path(unittest_nr, ovtype);
2134 return of_path_platform_device_exists(path);
2136 return of_path_i2c_client_exists(path);
2141 static const char *overlay_name_from_nr(int nr)
2143 static char buf[256];
2145 snprintf(buf, sizeof(buf) - 1,
2147 buf[sizeof(buf) - 1] = '\0';
2152 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
2154 #define MAX_TRACK_OVCS_IDS 256
2156 static int track_ovcs_id[MAX_TRACK_OVCS_IDS];
2157 static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS];
2158 static int track_ovcs_id_cnt;
2160 static void of_unittest_track_overlay(int ovcs_id, int overlay_nr)
2162 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS))
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++;
2170 static void of_unittest_untrack_overlay(int ovcs_id)
2172 if (WARN_ON(track_ovcs_id_cnt < 1))
2175 track_ovcs_id_cnt--;
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);
2181 static void of_unittest_remove_tracked_overlays(void)
2183 int ret, ovcs_id, overlay_nr, save_ovcs_id;
2184 const char *overlay_name;
2186 while (track_ovcs_id_cnt > 0) {
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);
2197 of_unittest_untrack_overlay(save_ovcs_id);
2202 static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id)
2205 * The overlay will be tracked, thus it will be removed
2206 * by of_unittest_remove_tracked_overlays().
2209 const char *overlay_name;
2211 overlay_name = overlay_name_from_nr(overlay_nr);
2213 if (!overlay_data_apply(overlay_name, ovcs_id)) {
2214 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2217 of_unittest_track_overlay(*ovcs_id, overlay_nr);
2222 static int __init __of_unittest_apply_overlay_check(int overlay_nr,
2223 int unittest_nr, int before, int after,
2224 enum overlay_type ovtype)
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");
2237 /* apply the overlay */
2239 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2241 /* of_unittest_apply_overlay already called unittest() */
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");
2257 /* apply an overlay while checking before and after states */
2258 static int __init of_unittest_apply_overlay_check(int overlay_nr,
2259 int unittest_nr, int before, int after,
2260 enum overlay_type ovtype)
2262 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr,
2263 unittest_nr, before, after, ovtype);
2270 /* apply an overlay and then revert it while checking before, after states */
2271 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2272 int unittest_nr, int before, int after,
2273 enum overlay_type ovtype)
2275 int ret, ovcs_id, save_ovcs_id;
2277 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr,
2278 before, after, ovtype);
2282 /* remove the overlay */
2283 save_ovcs_id = ovcs_id;
2284 ret = of_overlay_remove(&ovcs_id);
2286 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2287 overlay_name_from_nr(overlay_nr),
2288 unittest_path(unittest_nr, ovtype));
2291 of_unittest_untrack_overlay(save_ovcs_id);
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");
2305 /* test activation of device */
2306 static void __init of_unittest_overlay_0(void)
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");
2313 /* device should enable */
2314 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
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");
2322 unittest(1, "overlay test %d passed\n", 0);
2325 /* test deactivation of device */
2326 static void __init of_unittest_overlay_1(void)
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");
2333 /* device should disable */
2334 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
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");
2342 unittest(1, "overlay test %d passed\n", 1);
2346 /* test activation of device */
2347 static void __init of_unittest_overlay_2(void)
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");
2354 /* device should enable */
2355 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
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");
2362 unittest(1, "overlay test %d passed\n", 2);
2365 /* test deactivation of device */
2366 static void __init of_unittest_overlay_3(void)
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");
2373 /* device should disable */
2374 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
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");
2382 unittest(1, "overlay test %d passed\n", 3);
2385 /* test activation of a full device node */
2386 static void __init of_unittest_overlay_4(void)
2388 /* device should disable */
2389 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2392 unittest(1, "overlay test %d passed\n", 4);
2395 /* test overlay apply/revert sequence */
2396 static void __init of_unittest_overlay_5(void)
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");
2403 /* device should disable */
2404 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
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");
2412 unittest(1, "overlay test %d passed\n", 5);
2415 /* test overlay application in sequence */
2416 static void __init of_unittest_overlay_6(void)
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;
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)
2429 unittest(0, "%s with device @\"%s\" %s\n",
2430 overlay_name_from_nr(overlay_nr + i),
2431 unittest_path(unittest_nr + i,
2433 !before ? "enabled" : "disabled");
2438 /* apply the overlays */
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");
2443 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2445 ret = overlay_data_apply(overlay_name, &ovcs_id);
2448 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2451 save_ovcs_id[0] = ovcs_id;
2452 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
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");
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");
2460 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2462 ret = overlay_data_apply(overlay_name, &ovcs_id);
2465 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2468 save_ovcs_id[1] = ovcs_id;
2469 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
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");
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)
2479 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2480 overlay_name_from_nr(overlay_nr + i),
2481 unittest_path(unittest_nr + i,
2483 !after ? "enabled" : "disabled");
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,
2497 of_unittest_untrack_overlay(save_ovcs_id[i]);
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)
2504 unittest(0, "%s with device @\"%s\" %s\n",
2505 overlay_name_from_nr(overlay_nr + i),
2506 unittest_path(unittest_nr + i,
2508 !before ? "enabled" : "disabled");
2513 unittest(1, "overlay test %d passed\n", 6);
2517 /* test overlay application in sequence */
2518 static void __init of_unittest_overlay_8(void)
2520 int i, save_ovcs_id[2], ovcs_id;
2521 int overlay_nr = 8, unittest_nr = 8;
2522 const char *overlay_name;
2525 /* we don't care about device state in this test */
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");
2530 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2532 ret = overlay_data_apply(overlay_name, &ovcs_id);
2534 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
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");
2542 save_ovcs_id[0] = ovcs_id;
2543 of_unittest_track_overlay(ovcs_id, overlay_nr + 0);
2545 overlay_name = overlay_name_from_nr(overlay_nr + 1);
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");
2550 /* apply the overlays */
2551 ret = overlay_data_apply(overlay_name, &ovcs_id);
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");
2557 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2561 save_ovcs_id[1] = ovcs_id;
2562 of_unittest_track_overlay(ovcs_id, overlay_nr + 1);
2564 /* now try to remove first overlay (it should fail) */
2565 ovcs_id = save_ovcs_id[0];
2567 EXPECT_BEGIN(KERN_INFO,
2568 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2570 EXPECT_BEGIN(KERN_INFO,
2571 "OF: overlay: overlay #6 is not topmost");
2573 ret = of_overlay_remove(&ovcs_id);
2575 EXPECT_END(KERN_INFO,
2576 "OF: overlay: overlay #6 is not topmost");
2578 EXPECT_END(KERN_INFO,
2579 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2583 * Should never get here. If we do, expect a lot of
2584 * subsequent tracking and overlay removal related errors.
2586 unittest(0, "%s was destroyed @\"%s\"\n",
2587 overlay_name_from_nr(overlay_nr + 0),
2588 unittest_path(unittest_nr,
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,
2603 of_unittest_untrack_overlay(save_ovcs_id[i]);
2606 unittest(1, "overlay test %d passed\n", 8);
2609 /* test insertion of a bus with parent devices */
2610 static void __init of_unittest_overlay_10(void)
2615 /* device should disable */
2616 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2618 if (unittest(ret == 0,
2619 "overlay test %d failed; overlay application\n", 10))
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))
2627 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2630 unittest(ret, "overlay test %d failed; no child device\n", 10);
2633 /* test insertion of a bus with parent devices (and revert) */
2634 static void __init of_unittest_overlay_11(void)
2638 /* device should disable */
2639 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2642 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2645 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2647 struct unittest_i2c_bus_data {
2648 struct platform_device *pdev;
2649 struct i2c_adapter adap;
2652 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2653 struct i2c_msg *msgs, int num)
2655 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2662 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2664 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2667 static const struct i2c_algorithm unittest_i2c_algo = {
2668 .master_xfer = unittest_i2c_master_xfer,
2669 .functionality = unittest_i2c_functionality,
2672 static int unittest_i2c_bus_probe(struct platform_device *pdev)
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;
2681 dev_err(dev, "No OF data for device\n");
2686 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2688 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2692 /* link them together */
2694 platform_set_drvdata(pdev, std);
2697 i2c_set_adapdata(adap, std);
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;
2707 ret = i2c_add_numbered_adapter(adap);
2709 dev_err(dev, "Failed to add I2C adapter\n");
2716 static void unittest_i2c_bus_remove(struct platform_device *pdev)
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);
2722 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2723 i2c_del_adapter(&std->adap);
2726 static const struct of_device_id unittest_i2c_bus_match[] = {
2727 { .compatible = "unittest-i2c-bus", },
2731 static struct platform_driver unittest_i2c_bus_driver = {
2732 .probe = unittest_i2c_bus_probe,
2733 .remove_new = unittest_i2c_bus_remove,
2735 .name = "unittest-i2c-bus",
2736 .of_match_table = unittest_i2c_bus_match,
2740 static int unittest_i2c_dev_probe(struct i2c_client *client)
2742 struct device *dev = &client->dev;
2743 struct device_node *np = client->dev.of_node;
2746 dev_err(dev, "No OF node\n");
2750 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2755 static void unittest_i2c_dev_remove(struct i2c_client *client)
2757 struct device *dev = &client->dev;
2758 struct device_node *np = client->dev.of_node;
2760 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2763 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2764 { .name = "unittest-i2c-dev" },
2768 static struct i2c_driver unittest_i2c_dev_driver = {
2770 .name = "unittest-i2c-dev",
2772 .probe = unittest_i2c_dev_probe,
2773 .remove = unittest_i2c_dev_remove,
2774 .id_table = unittest_i2c_dev_id,
2777 #if IS_BUILTIN(CONFIG_I2C_MUX)
2779 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2784 static int unittest_i2c_mux_probe(struct i2c_client *client)
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;
2793 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2796 dev_err(dev, "No OF node\n");
2801 for_each_child_of_node(np, child) {
2802 if (of_property_read_u32(child, "reg", ®))
2804 if (max_reg == (u32)-1 || reg > max_reg)
2807 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2809 dev_err(dev, "No channels\n");
2813 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2814 unittest_i2c_mux_select_chan, NULL);
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);
2825 i2c_set_clientdata(client, muxc);
2830 static void unittest_i2c_mux_remove(struct i2c_client *client)
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);
2836 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2837 i2c_mux_del_adapters(muxc);
2840 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2841 { .name = "unittest-i2c-mux" },
2845 static struct i2c_driver unittest_i2c_mux_driver = {
2847 .name = "unittest-i2c-mux",
2849 .probe = unittest_i2c_mux_probe,
2850 .remove = unittest_i2c_mux_remove,
2851 .id_table = unittest_i2c_mux_id,
2856 static int of_unittest_overlay_i2c_init(void)
2860 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2861 if (unittest(ret == 0,
2862 "could not register unittest i2c device driver\n"))
2865 ret = platform_driver_register(&unittest_i2c_bus_driver);
2867 if (unittest(ret == 0,
2868 "could not register unittest i2c bus driver\n"))
2871 #if IS_BUILTIN(CONFIG_I2C_MUX)
2873 EXPECT_BEGIN(KERN_INFO,
2874 "i2c i2c-1: Added multiplexed i2c bus 2");
2876 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2878 EXPECT_END(KERN_INFO,
2879 "i2c i2c-1: Added multiplexed i2c bus 2");
2881 if (unittest(ret == 0,
2882 "could not register unittest i2c mux driver\n"))
2889 static void of_unittest_overlay_i2c_cleanup(void)
2891 #if IS_BUILTIN(CONFIG_I2C_MUX)
2892 i2c_del_driver(&unittest_i2c_mux_driver);
2894 platform_driver_unregister(&unittest_i2c_bus_driver);
2895 i2c_del_driver(&unittest_i2c_dev_driver);
2898 static void __init of_unittest_overlay_i2c_12(void)
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");
2906 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
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");
2914 unittest(1, "overlay test %d passed\n", 12);
2917 /* test deactivation of device */
2918 static void __init of_unittest_overlay_i2c_13(void)
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");
2925 /* device should disable */
2926 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
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");
2934 unittest(1, "overlay test %d passed\n", 13);
2937 /* just check for i2c mux existence */
2938 static void of_unittest_overlay_i2c_14(void)
2942 static void __init of_unittest_overlay_i2c_15(void)
2946 /* device should enable */
2947 EXPECT_BEGIN(KERN_INFO,
2948 "i2c i2c-1: Added multiplexed i2c bus 3");
2950 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2952 EXPECT_END(KERN_INFO,
2953 "i2c i2c-1: Added multiplexed i2c bus 3");
2958 unittest(1, "overlay test %d passed\n", 15);
2963 static inline void of_unittest_overlay_i2c_14(void) { }
2964 static inline void of_unittest_overlay_i2c_15(void) { }
2968 static int of_notify(struct notifier_block *nb, unsigned long action,
2971 struct of_overlay_notify_data *nd = arg;
2972 struct device_node *found;
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.
2981 * OVERLAY_INFO() for the overlays is declared to expect the same
2982 * error number, so overlay_data_apply() will return no error.
2984 * overlay_20 will return NOTIFY_DONE
2988 of_node_get(nd->overlay);
2992 case OF_OVERLAY_PRE_APPLY:
2993 found = of_find_node_by_name(nd->overlay, "test-unittest16");
3000 case OF_OVERLAY_POST_APPLY:
3001 found = of_find_node_by_name(nd->overlay, "test-unittest17");
3008 case OF_OVERLAY_PRE_REMOVE:
3009 found = of_find_node_by_name(nd->overlay, "test-unittest18");
3016 case OF_OVERLAY_POST_REMOVE:
3017 found = of_find_node_by_name(nd->overlay, "test-unittest19");
3024 default: /* should not happen */
3025 of_node_put(nd->overlay);
3031 return notifier_from_errno(ret);
3036 static struct notifier_block of_nb = {
3037 .notifier_call = of_notify,
3040 static void __init of_unittest_overlay_notify(void)
3045 ret = of_overlay_notifier_register(&of_nb);
3047 "of_overlay_notifier_register() failed, ret = %d\n", ret);
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().
3057 * Applying overlays 16 - 19 will each trigger an error for a
3058 * different action in of_notify().
3060 * Applying overlay 20 will not trigger any error in of_notify().
3063 /* --- overlay 16 --- */
3065 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3067 unittest(overlay_data_apply("overlay_16", &ovcs_id),
3068 "test OF_OVERLAY_PRE_APPLY notify injected error\n");
3070 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus");
3072 unittest(ovcs_id, "ovcs_id not created for overlay_16\n");
3074 /* --- overlay 17 --- */
3076 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3078 unittest(overlay_data_apply("overlay_17", &ovcs_id),
3079 "test OF_OVERLAY_POST_APPLY notify injected error\n");
3081 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus");
3083 unittest(ovcs_id, "ovcs_id not created for overlay_17\n");
3085 /* --- overlay 18 --- */
3087 unittest(overlay_data_apply("overlay_18", &ovcs_id),
3088 "OF_OVERLAY_PRE_REMOVE notify injected error\n");
3090 unittest(ovcs_id, "ovcs_id not created for overlay_18\n");
3093 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus");
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) {
3099 * change set ovcs_id should still exist
3101 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n");
3103 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n");
3106 unittest(1, "ovcs_id not created for overlay_18\n");
3109 unittest(ovcs_id, "ovcs_id removed for overlay_18\n");
3111 /* --- overlay 19 --- */
3113 unittest(overlay_data_apply("overlay_19", &ovcs_id),
3114 "OF_OVERLAY_POST_REMOVE notify injected error\n");
3116 unittest(ovcs_id, "ovcs_id not created for overlay_19\n");
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");
3123 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n");
3125 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n");
3127 unittest(1, "ovcs_id removed for overlay_19\n");
3130 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n",
3133 /* --- overlay 20 --- */
3135 unittest(overlay_data_apply("overlay_20", &ovcs_id),
3136 "overlay notify no injected error\n");
3139 ret = of_overlay_remove(&ovcs_id);
3141 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n",
3144 unittest(1, "ovcs_id not created for overlay_20\n");
3147 unittest(!of_overlay_notifier_unregister(&of_nb),
3148 "of_overlay_notifier_unregister() failed, ret = %d\n", ret);
3151 static void __init of_unittest_overlay(void)
3153 struct device_node *bus_np = NULL;
3156 if (platform_driver_register(&unittest_driver)) {
3157 unittest(0, "could not register unittest driver\n");
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);
3167 if (of_platform_default_populate(bus_np, NULL, NULL)) {
3168 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
3172 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
3173 unittest(0, "could not find unittest0 @ \"%s\"\n",
3174 unittest_path(100, PDEV_OVERLAY));
3178 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
3179 unittest(0, "unittest1 @ \"%s\" should not exist\n",
3180 unittest_path(101, PDEV_OVERLAY));
3184 unittest(1, "basic infrastructure of overlays passed");
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();
3197 of_unittest_overlay_10();
3198 of_unittest_overlay_11();
3200 #if IS_BUILTIN(CONFIG_I2C)
3201 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
3204 of_unittest_overlay_i2c_12();
3205 of_unittest_overlay_i2c_13();
3206 of_unittest_overlay_i2c_14();
3207 of_unittest_overlay_i2c_15();
3209 of_unittest_overlay_i2c_cleanup();
3212 of_unittest_overlay_gpio();
3214 of_unittest_remove_tracked_overlays();
3216 of_unittest_overlay_notify();
3219 of_node_put(bus_np);
3223 static inline void __init of_unittest_overlay(void) { }
3226 static void __init of_unittest_lifecycle(void)
3228 #ifdef CONFIG_OF_DYNAMIC
3229 unsigned int refcount;
3230 int found_refcount_one = 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";
3238 * Node lifecycle tests, non-dynamic node:
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.
3244 * - Decrementing refcount past zero should result in additional
3248 np = of_find_node_by_path(refcount_path);
3249 unittest(np, "find refcount_path \"%s\"\n", refcount_path);
3251 goto out_skip_tests;
3253 while (!found_refcount_one) {
3255 if (put_count++ > 10) {
3256 unittest(0, "guardrail to avoid infinite loop\n");
3257 goto out_skip_tests;
3260 refcount = kref_read(&np->kobj.kref);
3262 found_refcount_one = 1;
3267 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
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
3274 unittest(1, "/testcase-data/refcount-node is one");
3277 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node");
3281 * expect stack trace for subsequent of_node_put():
3282 * __refcount_sub_and_test() calls:
3283 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF)
3285 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just
3286 * the first three lines, and the last line.
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>> ]---");
3293 /* refcount is now zero, this should fail */
3294 unittest(1, "/testcase-data/refcount-node is zero");
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 ]------------");
3303 * Q. do we expect to get yet another warning?
3304 * A. no, the WARNING is from WARN_ONCE()
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>> ]---");
3311 unittest(1, "/testcase-data/refcount-node is zero, second time");
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 ]------------");
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.
3326 * Prevent the stack trace by removing node "refcount-node" from
3327 * its parent's child list.
3329 * WARNING: EVIL, EVIL, EVIL:
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.
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");
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;
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;
3360 unittest(0, "One or more lifecycle tests skipped\n");
3363 #ifdef CONFIG_OF_OVERLAY
3366 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are
3367 * created by cmd_dt_S_dtbo in scripts/Makefile.lib
3370 #define OVERLAY_INFO_EXTERN(overlay_name) \
3371 extern uint8_t __dtbo_##overlay_name##_begin[]; \
3372 extern uint8_t __dtbo_##overlay_name##_end[]
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, \
3382 struct overlay_info {
3383 uint8_t *dtbo_begin;
3385 int expected_result;
3386 int expected_result_remove; /* if apply failed */
3391 OVERLAY_INFO_EXTERN(overlay_base);
3392 OVERLAY_INFO_EXTERN(overlay);
3393 OVERLAY_INFO_EXTERN(overlay_0);
3394 OVERLAY_INFO_EXTERN(overlay_1);
3395 OVERLAY_INFO_EXTERN(overlay_2);
3396 OVERLAY_INFO_EXTERN(overlay_3);
3397 OVERLAY_INFO_EXTERN(overlay_4);
3398 OVERLAY_INFO_EXTERN(overlay_5);
3399 OVERLAY_INFO_EXTERN(overlay_6);
3400 OVERLAY_INFO_EXTERN(overlay_7);
3401 OVERLAY_INFO_EXTERN(overlay_8);
3402 OVERLAY_INFO_EXTERN(overlay_9);
3403 OVERLAY_INFO_EXTERN(overlay_10);
3404 OVERLAY_INFO_EXTERN(overlay_11);
3405 OVERLAY_INFO_EXTERN(overlay_12);
3406 OVERLAY_INFO_EXTERN(overlay_13);
3407 OVERLAY_INFO_EXTERN(overlay_15);
3408 OVERLAY_INFO_EXTERN(overlay_16);
3409 OVERLAY_INFO_EXTERN(overlay_17);
3410 OVERLAY_INFO_EXTERN(overlay_18);
3411 OVERLAY_INFO_EXTERN(overlay_19);
3412 OVERLAY_INFO_EXTERN(overlay_20);
3413 OVERLAY_INFO_EXTERN(overlay_gpio_01);
3414 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
3415 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
3416 OVERLAY_INFO_EXTERN(overlay_gpio_03);
3417 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
3418 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
3419 OVERLAY_INFO_EXTERN(overlay_pci_node);
3420 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
3421 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
3422 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
3423 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
3424 OVERLAY_INFO_EXTERN(overlay_bad_unresolved);
3426 /* entries found by name */
3427 static 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),
3466 static struct device_node *overlay_base_root;
3468 static void * __init dt_alloc_memory(u64 size, u64 align)
3470 void *ptr = memblock_alloc(size, align);
3473 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
3474 __func__, size, align);
3480 * Create base device tree for the overlay unittest.
3482 * This is called from very early boot code.
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.
3491 * Have to stop before resolving phandles, because that uses kmalloc.
3493 void __init unittest_unflatten_overlay_base(void)
3495 struct overlay_info *info;
3500 const char *overlay_name = "overlay_base";
3502 for (info = overlays; info && info->name; info++) {
3503 if (!strcmp(overlay_name, info->name)) {
3509 pr_err("no overlay data for %s\n", overlay_name);
3513 info = &overlays[0];
3515 if (info->expected_result != -9999) {
3516 pr_err("No dtb 'overlay_base' to attach\n");
3520 data_size = info->dtbo_end - info->dtbo_begin;
3522 pr_err("No dtb 'overlay_base' to attach\n");
3526 size = fdt_totalsize(info->dtbo_begin);
3527 if (size != data_size) {
3528 pr_err("dtb 'overlay_base' header totalsize != actual size");
3532 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
3534 pr_err("alloc for dtb 'overlay_base' failed");
3538 memcpy(new_fdt, info->dtbo_begin, size);
3540 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
3541 dt_alloc_memory, true);
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.
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.
3553 * Return 0 on unexpected error.
3555 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id)
3557 struct overlay_info *info;
3563 for (info = overlays; info && info->name; info++) {
3564 if (!strcmp(overlay_name, info->name)) {
3570 pr_err("no overlay data for %s\n", overlay_name);
3574 size = info->dtbo_end - info->dtbo_begin;
3576 pr_err("no overlay data for %s\n", overlay_name);
3578 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id,
3581 *ovcs_id = info->ovcs_id;
3585 pr_debug("%s applied\n", overlay_name);
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);
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,
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.
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.
3616 static __init void of_unittest_overlay_high_level(void)
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;
3626 if (!overlay_base_root) {
3627 unittest(0, "overlay_base_root not initialized\n");
3632 * Could not fixup phandles in unittest_unflatten_overlay_base()
3633 * because kmalloc() was not yet available.
3635 of_overlay_mutex_lock();
3636 of_resolve_phandles(overlay_base_root);
3637 of_overlay_mutex_unlock();
3641 * do not allow overlay_base to duplicate any node already in
3642 * tree, this greatly simplifies the code
3646 * remove overlay_base_root node "__local_fixups", after
3647 * being used by of_resolve_phandles()
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;
3655 pprev = &np->sibling;
3658 /* remove overlay_base_root node "__symbols__" if in live tree */
3659 of_symbols = of_get_child_by_name(of_root, "__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;
3669 pprev = &np->sibling;
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",
3680 of_node_put(base_child);
3687 * overlay 'overlay_base' is not allowed to have root
3688 * properties, so only need to splice nodes into main device tree.
3690 * root node of *overlay_base_root will not be freed, it is lost
3694 for (np = overlay_base_root->child; np; np = np->sibling)
3695 np->parent = of_root;
3697 mutex_lock(&of_mutex);
3699 for (last_sibling = np = of_root->child; np; np = np->sibling)
3703 last_sibling->sibling = overlay_base_root->child;
3705 of_root->child = overlay_base_root->child;
3707 for_each_of_allnodes_from(overlay_base_root, np)
3708 __of_attach_node_sysfs(np);
3711 struct property *new_prop;
3712 for_each_property_of_node(overlay_base_symbols, prop) {
3714 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3716 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3720 if (__of_add_property(of_symbols, new_prop)) {
3721 kfree(new_prop->name);
3722 kfree(new_prop->value);
3724 /* "name" auto-generated by unflatten */
3725 if (!strcmp(prop->name, "name"))
3727 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
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",
3739 mutex_unlock(&of_mutex);
3742 /* now do the normal overlay usage test */
3744 /* --- overlay --- */
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");
3769 ret = overlay_data_apply("overlay", NULL);
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");
3794 unittest(ret, "Adding overlay 'overlay' failed\n");
3796 /* --- overlay_bad_add_dup_node --- */
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)");
3807 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3808 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
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");
3819 /* --- overlay_bad_add_dup_prop --- */
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)");
3832 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3833 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
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");
3846 /* --- overlay_bad_phandle --- */
3848 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3849 "Adding overlay 'overlay_bad_phandle' failed\n");
3851 /* --- overlay_bad_symbol --- */
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)");
3858 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3859 "Adding overlay 'overlay_bad_symbol' failed\n");
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");
3866 /* --- overlay_bad_unresolved --- */
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");
3873 unittest(overlay_data_apply("overlay_bad_unresolved", NULL),
3874 "Adding overlay 'overlay_bad_unresolved' failed\n");
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");
3884 mutex_unlock(&of_mutex);
3887 static int of_unittest_pci_dev_num;
3888 static int of_unittest_pci_child_num;
3891 * PCI device tree node test driver
3893 static const struct pci_device_id testdrv_pci_ids[] = {
3894 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */
3898 static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3900 struct overlay_info *info;
3901 struct device_node *dn;
3905 dn = pdev->dev.of_node;
3907 dev_err(&pdev->dev, "does not find bus endpoint");
3911 for (info = overlays; info && info->name; info++) {
3912 if (!strcmp(info->name, "overlay_pci_node"))
3915 if (!info || !info->name) {
3916 dev_err(&pdev->dev, "no overlay data for overlay_pci_node");
3920 size = info->dtbo_end - info->dtbo_begin;
3921 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn);
3926 of_platform_default_populate(dn, NULL, &pdev->dev);
3927 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id);
3932 static void testdrv_remove(struct pci_dev *pdev)
3934 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev);
3936 of_platform_depopulate(&pdev->dev);
3937 of_overlay_remove(&ovcs_id);
3940 static struct pci_driver testdrv_driver = {
3941 .name = "pci_dt_testdrv",
3942 .id_table = testdrv_pci_ids,
3943 .probe = testdrv_probe,
3944 .remove = testdrv_remove,
3947 static int unittest_pci_probe(struct platform_device *pdev)
3949 struct resource *res;
3953 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3958 while (dev && !dev_is_pci(dev))
3961 pr_err("unable to find parent device\n");
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);
3969 of_unittest_pci_child_num++;
3974 static const struct of_device_id unittest_pci_of_match[] = {
3975 { .compatible = "unittest-pci" },
3979 static struct platform_driver unittest_pci_driver = {
3980 .probe = unittest_pci_probe,
3982 .name = "unittest-pci",
3983 .of_match_table = unittest_pci_of_match,
3987 static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add)
3989 struct device_node *pnp, *np = NULL;
3990 struct device *child_dev;
3995 pnp = pdev->dev.of_node;
3996 unittest(pnp, "Failed creating PCI dt node\n");
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");
4009 reg = of_get_property(np, "reg", NULL);
4010 unittest(reg, "Failed to get reg property\n");
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");
4029 static void __init of_unittest_pci_node(void)
4031 struct pci_dev *pdev = NULL;
4034 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES))
4037 rc = pci_register_driver(&testdrv_driver);
4038 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc);
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);
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++;
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);
4061 platform_driver_unregister(&unittest_pci_driver);
4062 pci_unregister_driver(&testdrv_driver);
4064 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL)
4065 of_unittest_pci_node_verify(pdev, false);
4071 static inline __init void of_unittest_overlay_high_level(void) {}
4072 static inline __init void of_unittest_pci_node(void) { }
4076 static int __init of_unittest(void)
4078 struct device_node *np;
4081 pr_info("start of unittest - you will see error messages\n");
4083 /* Taint the kernel so we know we've run tests. */
4084 add_taint(TAINT_TEST, LOCKDEP_STILL_OK);
4086 /* adding data for unittest */
4087 res = unittest_data_add();
4091 of_aliases = of_find_node_by_path("/aliases");
4093 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
4095 pr_info("No testcase data in device tree; not running tests\n");
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();
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();
4125 /* Double check linkage after removing testcase data */
4126 of_unittest_check_tree_linkage();
4128 of_unittest_overlay_high_level();
4130 pr_info("end of unittest - %i passed, %i failed\n",
4131 unittest_results.passed, unittest_results.failed);
4135 late_initcall(of_unittest);