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/kernel.h>
27 #include <linux/i2c.h>
28 #include <linux/i2c-mux.h>
29 #include <linux/gpio/driver.h>
31 #include <linux/bitops.h>
33 #include "of_private.h"
35 static struct unittest_results {
40 #define unittest(result, fmt, ...) ({ \
41 bool failed = !(result); \
43 unittest_results.failed++; \
44 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
46 unittest_results.passed++; \
47 pr_debug("pass %s():%i\n", __func__, __LINE__); \
53 * Expected message may have a message level other than KERN_INFO.
54 * Print the expected message only if the current loglevel will allow
55 * the actual message to print.
57 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by
60 #define EXPECT_BEGIN(level, fmt, ...) \
61 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__)
63 #define EXPECT_END(level, fmt, ...) \
64 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__)
66 static void __init of_unittest_find_node_by_name(void)
68 struct device_node *np;
69 const char *options, *name;
71 np = of_find_node_by_path("/testcase-data");
72 name = kasprintf(GFP_KERNEL, "%pOF", np);
73 unittest(np && !strcmp("/testcase-data", name),
74 "find /testcase-data failed\n");
78 /* Test if trailing '/' works */
79 np = of_find_node_by_path("/testcase-data/");
80 unittest(!np, "trailing '/' on /testcase-data/ should fail\n");
82 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
83 name = kasprintf(GFP_KERNEL, "%pOF", np);
84 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
85 "find /testcase-data/phandle-tests/consumer-a failed\n");
89 np = of_find_node_by_path("testcase-alias");
90 name = kasprintf(GFP_KERNEL, "%pOF", np);
91 unittest(np && !strcmp("/testcase-data", name),
92 "find testcase-alias failed\n");
96 /* Test if trailing '/' works on aliases */
97 np = of_find_node_by_path("testcase-alias/");
98 unittest(!np, "trailing '/' on testcase-alias/ should fail\n");
100 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
101 name = kasprintf(GFP_KERNEL, "%pOF", np);
102 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
103 "find testcase-alias/phandle-tests/consumer-a failed\n");
107 np = of_find_node_by_path("/testcase-data/missing-path");
108 unittest(!np, "non-existent path returned node %pOF\n", np);
111 np = of_find_node_by_path("missing-alias");
112 unittest(!np, "non-existent alias returned node %pOF\n", np);
115 np = of_find_node_by_path("testcase-alias/missing-path");
116 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np);
119 np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
120 unittest(np && !strcmp("testoption", options),
121 "option path test failed\n");
124 np = of_find_node_opts_by_path("/testcase-data:test/option", &options);
125 unittest(np && !strcmp("test/option", options),
126 "option path test, subcase #1 failed\n");
129 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options);
130 unittest(np && !strcmp("test/option", options),
131 "option path test, subcase #2 failed\n");
134 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
135 unittest(np, "NULL option path test failed\n");
138 np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
140 unittest(np && !strcmp("testaliasoption", options),
141 "option alias path test failed\n");
144 np = of_find_node_opts_by_path("testcase-alias:test/alias/option",
146 unittest(np && !strcmp("test/alias/option", options),
147 "option alias path test, subcase #1 failed\n");
150 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
151 unittest(np, "NULL option alias path test failed\n");
154 options = "testoption";
155 np = of_find_node_opts_by_path("testcase-alias", &options);
156 unittest(np && !options, "option clearing test failed\n");
159 options = "testoption";
160 np = of_find_node_opts_by_path("/", &options);
161 unittest(np && !options, "option clearing root node test failed\n");
165 static void __init of_unittest_dynamic(void)
167 struct device_node *np;
168 struct property *prop;
170 np = of_find_node_by_path("/testcase-data");
172 pr_err("missing testcase data\n");
176 /* Array of 4 properties for the purpose of testing */
177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL);
179 unittest(0, "kzalloc() failed\n");
183 /* Add a new property - should pass*/
184 prop->name = "new-property";
185 prop->value = "new-property-data";
186 prop->length = strlen(prop->value) + 1;
187 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
189 /* Try to add an existing property - should fail */
191 prop->name = "new-property";
192 prop->value = "new-property-data-should-fail";
193 prop->length = strlen(prop->value) + 1;
194 unittest(of_add_property(np, prop) != 0,
195 "Adding an existing property should have failed\n");
197 /* Try to modify an existing property - should pass */
198 prop->value = "modify-property-data-should-pass";
199 prop->length = strlen(prop->value) + 1;
200 unittest(of_update_property(np, prop) == 0,
201 "Updating an existing property should have passed\n");
203 /* Try to modify non-existent property - should pass*/
205 prop->name = "modify-property";
206 prop->value = "modify-missing-property-data-should-pass";
207 prop->length = strlen(prop->value) + 1;
208 unittest(of_update_property(np, prop) == 0,
209 "Updating a missing property should have passed\n");
211 /* Remove property - should pass */
212 unittest(of_remove_property(np, prop) == 0,
213 "Removing a property should have passed\n");
215 /* Adding very large property - should pass */
217 prop->name = "large-property-PAGE_SIZEx8";
218 prop->length = PAGE_SIZE * 8;
219 prop->value = kzalloc(prop->length, GFP_KERNEL);
220 unittest(prop->value != NULL, "Unable to allocate large buffer\n");
222 unittest(of_add_property(np, prop) == 0,
223 "Adding a large property should have passed\n");
226 static int __init of_unittest_check_node_linkage(struct device_node *np)
228 struct device_node *child;
231 for_each_child_of_node(np, child) {
232 if (child->parent != np) {
233 pr_err("Child node %pOFn links to wrong parent %pOFn\n",
239 rc = of_unittest_check_node_linkage(child);
251 static void __init of_unittest_check_tree_linkage(void)
253 struct device_node *np;
254 int allnode_count = 0, child_count;
259 for_each_of_allnodes(np)
261 child_count = of_unittest_check_node_linkage(of_root);
263 unittest(child_count > 0, "Device node data structure is corrupted\n");
264 unittest(child_count == allnode_count,
265 "allnodes list size (%i) doesn't match sibling lists size (%i)\n",
266 allnode_count, child_count);
267 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
270 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
271 const char *expected)
277 buf_size = strlen(expected) + 10;
278 buf = kmalloc(buf_size, GFP_KERNEL);
282 /* Baseline; check conversion with a large size limit */
283 memset(buf, 0xff, buf_size);
284 size = snprintf(buf, buf_size - 2, fmt, np);
286 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
287 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
288 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
291 /* Make sure length limits work */
293 for (i = 0; i < 2; i++, size--) {
294 /* Clear the buffer, and make sure it works correctly still */
295 memset(buf, 0xff, buf_size);
296 snprintf(buf, size+1, fmt, np);
297 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
298 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
299 size, fmt, expected, buf);
304 static void __init of_unittest_printf(void)
306 struct device_node *np;
307 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
308 char phandle_str[16] = "";
310 np = of_find_node_by_path(full_name);
312 unittest(np, "testcase data missing\n");
316 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0);
318 of_unittest_printf_one(np, "%pOF", full_name);
319 of_unittest_printf_one(np, "%pOFf", full_name);
320 of_unittest_printf_one(np, "%pOFn", "dev");
321 of_unittest_printf_one(np, "%2pOFn", "dev");
322 of_unittest_printf_one(np, "%5pOFn", " dev");
323 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
324 of_unittest_printf_one(np, "%pOFp", phandle_str);
325 of_unittest_printf_one(np, "%pOFP", "dev@100");
326 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
327 of_unittest_printf_one(np, "%10pOFP", " dev@100");
328 of_unittest_printf_one(np, "%-10pOFP", "dev@100 ");
329 of_unittest_printf_one(of_root, "%pOFP", "/");
330 of_unittest_printf_one(np, "%pOFF", "----");
331 of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
332 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
333 of_unittest_printf_one(np, "%pOFc", "test-sub-device");
334 of_unittest_printf_one(np, "%pOFC",
335 "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
339 struct hlist_node node;
340 struct device_node *np;
343 static DEFINE_HASHTABLE(phandle_ht, 8);
344 static void __init of_unittest_check_phandles(void)
346 struct device_node *np;
347 struct node_hash *nh;
348 struct hlist_node *tmp;
349 int i, dup_count = 0, phandle_count = 0;
351 for_each_of_allnodes(np) {
355 hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
356 if (nh->np->phandle == np->phandle) {
357 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n",
358 np->phandle, nh->np, np);
364 nh = kzalloc(sizeof(*nh), GFP_KERNEL);
369 hash_add(phandle_ht, &nh->node, np->phandle);
372 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n",
373 dup_count, phandle_count);
376 hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
382 static void __init of_unittest_parse_phandle_with_args(void)
384 struct device_node *np;
385 struct of_phandle_args args;
388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
390 pr_err("missing testcase data\n");
394 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
395 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
397 for (i = 0; i < 8; i++) {
400 memset(&args, 0, sizeof(args));
401 rc = of_parse_phandle_with_args(np, "phandle-list",
402 "#phandle-cells", i, &args);
404 /* Test the values from tests-phandle.dtsi */
408 passed &= (args.args_count == 1);
409 passed &= (args.args[0] == (i + 1));
413 passed &= (args.args_count == 2);
414 passed &= (args.args[0] == (i + 1));
415 passed &= (args.args[1] == 0);
418 passed &= (rc == -ENOENT);
422 passed &= (args.args_count == 3);
423 passed &= (args.args[0] == (i + 1));
424 passed &= (args.args[1] == 4);
425 passed &= (args.args[2] == 3);
429 passed &= (args.args_count == 2);
430 passed &= (args.args[0] == (i + 1));
431 passed &= (args.args[1] == 100);
435 passed &= (args.args_count == 0);
439 passed &= (args.args_count == 1);
440 passed &= (args.args[0] == (i + 1));
443 passed &= (rc == -ENOENT);
449 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
453 /* Check for missing list property */
454 memset(&args, 0, sizeof(args));
455 rc = of_parse_phandle_with_args(np, "phandle-list-missing",
456 "#phandle-cells", 0, &args);
457 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
458 rc = of_count_phandle_with_args(np, "phandle-list-missing",
460 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
462 /* Check for missing cells property */
463 memset(&args, 0, sizeof(args));
465 EXPECT_BEGIN(KERN_INFO,
466 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
468 rc = of_parse_phandle_with_args(np, "phandle-list",
469 "#phandle-cells-missing", 0, &args);
471 EXPECT_END(KERN_INFO,
472 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
474 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
476 EXPECT_BEGIN(KERN_INFO,
477 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
479 rc = of_count_phandle_with_args(np, "phandle-list",
480 "#phandle-cells-missing");
482 EXPECT_END(KERN_INFO,
483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1");
485 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
487 /* Check for bad phandle in list */
488 memset(&args, 0, sizeof(args));
490 EXPECT_BEGIN(KERN_INFO,
491 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
493 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
494 "#phandle-cells", 0, &args);
496 EXPECT_END(KERN_INFO,
497 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
499 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
501 EXPECT_BEGIN(KERN_INFO,
502 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
504 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
507 EXPECT_END(KERN_INFO,
508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle");
510 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
512 /* Check for incorrectly formed argument list */
513 memset(&args, 0, sizeof(args));
515 EXPECT_BEGIN(KERN_INFO,
516 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
518 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
519 "#phandle-cells", 1, &args);
521 EXPECT_END(KERN_INFO,
522 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
524 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
526 EXPECT_BEGIN(KERN_INFO,
527 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
529 rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
532 EXPECT_END(KERN_INFO,
533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1");
535 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
538 static void __init of_unittest_parse_phandle_with_args_map(void)
540 struct device_node *np, *p0, *p1, *p2, *p3;
541 struct of_phandle_args args;
544 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b");
546 pr_err("missing testcase data\n");
550 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0");
552 pr_err("missing testcase data\n");
556 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1");
558 pr_err("missing testcase data\n");
562 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2");
564 pr_err("missing testcase data\n");
568 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3");
570 pr_err("missing testcase data\n");
574 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
575 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
577 for (i = 0; i < 8; i++) {
580 memset(&args, 0, sizeof(args));
581 rc = of_parse_phandle_with_args_map(np, "phandle-list",
582 "phandle", i, &args);
584 /* Test the values from tests-phandle.dtsi */
588 passed &= (args.np == p1);
589 passed &= (args.args_count == 1);
590 passed &= (args.args[0] == 1);
594 passed &= (args.np == p3);
595 passed &= (args.args_count == 3);
596 passed &= (args.args[0] == 2);
597 passed &= (args.args[1] == 5);
598 passed &= (args.args[2] == 3);
601 passed &= (rc == -ENOENT);
605 passed &= (args.np == p0);
606 passed &= (args.args_count == 0);
610 passed &= (args.np == p1);
611 passed &= (args.args_count == 1);
612 passed &= (args.args[0] == 3);
616 passed &= (args.np == p0);
617 passed &= (args.args_count == 0);
621 passed &= (args.np == p2);
622 passed &= (args.args_count == 2);
623 passed &= (args.args[0] == 15);
624 passed &= (args.args[1] == 0x20);
627 passed &= (rc == -ENOENT);
633 unittest(passed, "index %i - data error on node %s rc=%i\n",
634 i, args.np->full_name, rc);
637 /* Check for missing list property */
638 memset(&args, 0, sizeof(args));
639 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
640 "phandle", 0, &args);
641 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
643 /* Check for missing cells,map,mask property */
644 memset(&args, 0, sizeof(args));
646 EXPECT_BEGIN(KERN_INFO,
647 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
649 rc = of_parse_phandle_with_args_map(np, "phandle-list",
650 "phandle-missing", 0, &args);
651 EXPECT_END(KERN_INFO,
652 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1");
654 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
656 /* Check for bad phandle in list */
657 memset(&args, 0, sizeof(args));
659 EXPECT_BEGIN(KERN_INFO,
660 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
662 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
663 "phandle", 0, &args);
664 EXPECT_END(KERN_INFO,
665 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
667 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
669 /* Check for incorrectly formed argument list */
670 memset(&args, 0, sizeof(args));
672 EXPECT_BEGIN(KERN_INFO,
673 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
675 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
676 "phandle", 1, &args);
677 EXPECT_END(KERN_INFO,
678 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1");
680 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
683 static void __init of_unittest_property_string(void)
685 const char *strings[4];
686 struct device_node *np;
689 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
691 pr_err("No testcase data in device tree\n");
695 rc = of_property_match_string(np, "phandle-list-names", "first");
696 unittest(rc == 0, "first expected:0 got:%i\n", rc);
697 rc = of_property_match_string(np, "phandle-list-names", "second");
698 unittest(rc == 1, "second expected:1 got:%i\n", rc);
699 rc = of_property_match_string(np, "phandle-list-names", "third");
700 unittest(rc == 2, "third expected:2 got:%i\n", rc);
701 rc = of_property_match_string(np, "phandle-list-names", "fourth");
702 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
703 rc = of_property_match_string(np, "missing-property", "blah");
704 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc);
705 rc = of_property_match_string(np, "empty-property", "blah");
706 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc);
707 rc = of_property_match_string(np, "unterminated-string", "blah");
708 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
710 /* of_property_count_strings() tests */
711 rc = of_property_count_strings(np, "string-property");
712 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
713 rc = of_property_count_strings(np, "phandle-list-names");
714 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
715 rc = of_property_count_strings(np, "unterminated-string");
716 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
717 rc = of_property_count_strings(np, "unterminated-string-list");
718 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
720 /* of_property_read_string_index() tests */
721 rc = of_property_read_string_index(np, "string-property", 0, strings);
722 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc);
724 rc = of_property_read_string_index(np, "string-property", 1, strings);
725 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
726 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings);
727 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
728 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings);
729 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc);
730 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings);
731 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc);
733 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings);
734 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
736 rc = of_property_read_string_index(np, "unterminated-string", 0, strings);
737 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
738 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings);
739 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc);
741 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */
742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc);
745 /* of_property_read_string_array() tests */
746 rc = of_property_read_string_array(np, "string-property", strings, 4);
747 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc);
748 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
749 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc);
750 rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
751 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
752 /* -- An incorrectly formed string should cause a failure */
753 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4);
754 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc);
755 /* -- parsing the correctly formed strings should still work: */
757 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2);
758 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc);
760 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1);
761 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]);
764 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
765 (p1)->value && (p2)->value && \
766 !memcmp((p1)->value, (p2)->value, (p1)->length) && \
767 !strcmp((p1)->name, (p2)->name))
768 static void __init of_unittest_property_copy(void)
770 #ifdef CONFIG_OF_DYNAMIC
771 struct property p1 = { .name = "p1", .length = 0, .value = "" };
772 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" };
773 struct property *new;
775 new = __of_prop_dup(&p1, GFP_KERNEL);
776 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
781 new = __of_prop_dup(&p2, GFP_KERNEL);
782 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
789 static void __init of_unittest_changeset(void)
791 #ifdef CONFIG_OF_DYNAMIC
792 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" };
793 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" };
794 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" };
795 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" };
796 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
797 struct property *ppremove;
798 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np;
799 struct of_changeset chgset;
801 n1 = __of_node_dup(NULL, "n1");
802 unittest(n1, "testcase setup failure\n");
804 n2 = __of_node_dup(NULL, "n2");
805 unittest(n2, "testcase setup failure\n");
807 n21 = __of_node_dup(NULL, "n21");
808 unittest(n21, "testcase setup failure %p\n", n21);
810 nchangeset = of_find_node_by_path("/testcase-data/changeset");
811 nremove = of_get_child_by_name(nchangeset, "node-remove");
812 unittest(nremove, "testcase setup failure\n");
814 ppadd = __of_prop_dup(&padd, GFP_KERNEL);
815 unittest(ppadd, "testcase setup failure\n");
817 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
818 unittest(ppname_n1, "testcase setup failure\n");
820 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
821 unittest(ppname_n2, "testcase setup failure\n");
823 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
824 unittest(ppname_n21, "testcase setup failure\n");
826 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
827 unittest(ppupdate, "testcase setup failure\n");
834 ppremove = of_find_property(parent, "prop-remove", NULL);
835 unittest(ppremove, "failed to find removal prop");
837 of_changeset_init(&chgset);
839 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
840 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n");
842 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
843 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n");
845 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
846 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n");
848 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
850 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n");
851 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
852 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
854 unittest(!of_changeset_apply(&chgset), "apply failed\n");
856 of_node_put(nchangeset);
858 /* Make sure node names are constructed correctly */
859 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")),
860 "'%pOF' not added\n", n21);
863 unittest(!of_changeset_revert(&chgset), "revert failed\n");
865 of_changeset_destroy(&chgset);
873 static void __init of_unittest_dma_get_max_cpu_address(void)
875 struct device_node *np;
876 phys_addr_t cpu_addr;
878 if (!IS_ENABLED(CONFIG_OF_ADDRESS))
881 np = of_find_node_by_path("/testcase-data/address-tests");
883 pr_err("missing testcase data\n");
887 cpu_addr = of_dma_get_max_cpu_address(np);
888 unittest(cpu_addr == 0x4fffffff,
889 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
890 &cpu_addr, 0x4fffffff);
893 static void __init of_unittest_dma_ranges_one(const char *path,
894 u64 expect_dma_addr, u64 expect_paddr)
896 #ifdef CONFIG_HAS_DMA
897 struct device_node *np;
898 const struct bus_dma_region *map = NULL;
901 np = of_find_node_by_path(path);
903 pr_err("missing testcase data\n");
907 rc = of_dma_get_range(np, &map);
909 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc);
914 struct device dev_bogus;
916 dev_bogus.dma_range_map = map;
917 paddr = dma_to_phys(&dev_bogus, expect_dma_addr);
918 dma_addr = phys_to_dma(&dev_bogus, expect_paddr);
920 unittest(paddr == expect_paddr,
921 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n",
922 &paddr, expect_paddr, np);
923 unittest(dma_addr == expect_dma_addr,
924 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n",
925 &dma_addr, expect_dma_addr, np);
933 static void __init of_unittest_parse_dma_ranges(void)
935 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000",
937 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000",
938 0x100000000, 0x20000000);
939 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000",
940 0x80000000, 0x20000000);
943 static void __init of_unittest_pci_dma_ranges(void)
945 struct device_node *np;
946 struct of_pci_range range;
947 struct of_pci_range_parser parser;
950 if (!IS_ENABLED(CONFIG_PCI))
953 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000");
955 pr_err("missing testcase data\n");
959 if (of_pci_dma_range_parser_init(&parser, np)) {
960 pr_err("missing dma-ranges property\n");
965 * Get the dma-ranges from the device tree
967 for_each_of_pci_range(&parser, &range) {
969 unittest(range.size == 0x10000000,
970 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
972 unittest(range.cpu_addr == 0x20000000,
973 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
975 unittest(range.pci_addr == 0x80000000,
976 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
979 unittest(range.size == 0x10000000,
980 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
982 unittest(range.cpu_addr == 0x40000000,
983 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
985 unittest(range.pci_addr == 0xc0000000,
986 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
995 static void __init of_unittest_parse_interrupts(void)
997 struct device_node *np;
998 struct of_phandle_args args;
1001 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
1006 pr_err("missing testcase data\n");
1010 for (i = 0; i < 4; i++) {
1013 memset(&args, 0, sizeof(args));
1014 rc = of_irq_parse_one(np, i, &args);
1017 passed &= (args.args_count == 1);
1018 passed &= (args.args[0] == (i + 1));
1020 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1025 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
1027 pr_err("missing testcase data\n");
1031 for (i = 0; i < 4; i++) {
1034 memset(&args, 0, sizeof(args));
1035 rc = of_irq_parse_one(np, i, &args);
1037 /* Test the values from tests-phandle.dtsi */
1041 passed &= (args.args_count == 1);
1042 passed &= (args.args[0] == 9);
1046 passed &= (args.args_count == 3);
1047 passed &= (args.args[0] == 10);
1048 passed &= (args.args[1] == 11);
1049 passed &= (args.args[2] == 12);
1053 passed &= (args.args_count == 2);
1054 passed &= (args.args[0] == 13);
1055 passed &= (args.args[1] == 14);
1059 passed &= (args.args_count == 2);
1060 passed &= (args.args[0] == 15);
1061 passed &= (args.args[1] == 16);
1066 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1072 static void __init of_unittest_parse_interrupts_extended(void)
1074 struct device_node *np;
1075 struct of_phandle_args args;
1078 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
1081 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
1083 pr_err("missing testcase data\n");
1087 for (i = 0; i < 7; i++) {
1090 memset(&args, 0, sizeof(args));
1091 rc = of_irq_parse_one(np, i, &args);
1093 /* Test the values from tests-phandle.dtsi */
1097 passed &= (args.args_count == 1);
1098 passed &= (args.args[0] == 1);
1102 passed &= (args.args_count == 3);
1103 passed &= (args.args[0] == 2);
1104 passed &= (args.args[1] == 3);
1105 passed &= (args.args[2] == 4);
1109 passed &= (args.args_count == 2);
1110 passed &= (args.args[0] == 5);
1111 passed &= (args.args[1] == 6);
1115 passed &= (args.args_count == 1);
1116 passed &= (args.args[0] == 9);
1120 passed &= (args.args_count == 3);
1121 passed &= (args.args[0] == 10);
1122 passed &= (args.args[1] == 11);
1123 passed &= (args.args[2] == 12);
1127 passed &= (args.args_count == 2);
1128 passed &= (args.args[0] == 13);
1129 passed &= (args.args[1] == 14);
1133 * Tests child node that is missing property
1134 * #address-cells. See the comments in
1135 * drivers/of/unittest-data/tests-interrupts.dtsi
1136 * nodes intmap1 and interrupts-extended0
1139 passed &= (args.args_count == 1);
1140 passed &= (args.args[0] == 15);
1146 unittest(passed, "index %i - data error on node %pOF rc=%i\n",
1152 static const struct of_device_id match_node_table[] = {
1153 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
1154 { .data = "B", .type = "type1", }, /* followed by type alone */
1156 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
1157 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
1158 { .data = "Cc", .name = "name2", .type = "type2", },
1160 { .data = "E", .compatible = "compat3" },
1161 { .data = "G", .compatible = "compat2", },
1162 { .data = "H", .compatible = "compat2", .name = "name5", },
1163 { .data = "I", .compatible = "compat2", .type = "type1", },
1164 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
1165 { .data = "K", .compatible = "compat2", .name = "name9", },
1172 } match_node_tests[] = {
1173 { .path = "/testcase-data/match-node/name0", .data = "A", },
1174 { .path = "/testcase-data/match-node/name1", .data = "B", },
1175 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
1176 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
1177 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
1178 { .path = "/testcase-data/match-node/name3", .data = "E", },
1179 { .path = "/testcase-data/match-node/name4", .data = "G", },
1180 { .path = "/testcase-data/match-node/name5", .data = "H", },
1181 { .path = "/testcase-data/match-node/name6", .data = "G", },
1182 { .path = "/testcase-data/match-node/name7", .data = "I", },
1183 { .path = "/testcase-data/match-node/name8", .data = "J", },
1184 { .path = "/testcase-data/match-node/name9", .data = "K", },
1187 static void __init of_unittest_match_node(void)
1189 struct device_node *np;
1190 const struct of_device_id *match;
1193 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
1194 np = of_find_node_by_path(match_node_tests[i].path);
1196 unittest(0, "missing testcase node %s\n",
1197 match_node_tests[i].path);
1201 match = of_match_node(match_node_table, np);
1203 unittest(0, "%s didn't match anything\n",
1204 match_node_tests[i].path);
1208 if (strcmp(match->data, match_node_tests[i].data) != 0) {
1209 unittest(0, "%s got wrong match. expected %s, got %s\n",
1210 match_node_tests[i].path, match_node_tests[i].data,
1211 (const char *)match->data);
1214 unittest(1, "passed");
1218 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2);
1219 static const struct platform_device_info test_bus_info = {
1220 .name = "unittest-bus",
1222 static void __init of_unittest_platform_populate(void)
1225 struct device_node *np, *child, *grandchild;
1226 struct platform_device *pdev, *test_bus;
1227 const struct of_device_id match[] = {
1228 { .compatible = "test-device", },
1232 np = of_find_node_by_path("/testcase-data");
1233 of_platform_default_populate(np, NULL, NULL);
1235 /* Test that a missing irq domain returns -EPROBE_DEFER */
1236 np = of_find_node_by_path("/testcase-data/testcase-device1");
1237 pdev = of_find_device_by_node(np);
1238 unittest(pdev, "device 1 creation failed\n");
1240 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
1241 irq = platform_get_irq(pdev, 0);
1242 unittest(irq == -EPROBE_DEFER,
1243 "device deferred probe failed - %d\n", irq);
1245 /* Test that a parsing failure does not return -EPROBE_DEFER */
1246 np = of_find_node_by_path("/testcase-data/testcase-device2");
1247 pdev = of_find_device_by_node(np);
1248 unittest(pdev, "device 2 creation failed\n");
1250 EXPECT_BEGIN(KERN_INFO,
1251 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1253 irq = platform_get_irq(pdev, 0);
1255 EXPECT_END(KERN_INFO,
1256 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1258 unittest(irq < 0 && irq != -EPROBE_DEFER,
1259 "device parsing error failed - %d\n", irq);
1262 np = of_find_node_by_path("/testcase-data/platform-tests");
1263 unittest(np, "No testcase data in device tree\n");
1267 test_bus = platform_device_register_full(&test_bus_info);
1268 rc = PTR_ERR_OR_ZERO(test_bus);
1269 unittest(!rc, "testbus registration failed; rc=%i\n", rc);
1274 test_bus->dev.of_node = np;
1277 * Add a dummy resource to the test bus node after it is
1278 * registered to catch problems with un-inserted resources. The
1279 * DT code doesn't insert the resources, and it has caused the
1280 * kernel to oops in the past. This makes sure the same bug
1281 * doesn't crop up again.
1283 platform_device_add_resources(test_bus, &test_bus_res, 1);
1285 of_platform_populate(np, match, NULL, &test_bus->dev);
1286 for_each_child_of_node(np, child) {
1287 for_each_child_of_node(child, grandchild) {
1288 pdev = of_find_device_by_node(grandchild);
1290 "Could not create device for node '%pOFn'\n",
1292 platform_device_put(pdev);
1296 of_platform_depopulate(&test_bus->dev);
1297 for_each_child_of_node(np, child) {
1298 for_each_child_of_node(child, grandchild)
1299 unittest(!of_find_device_by_node(grandchild),
1300 "device didn't get destroyed '%pOFn'\n",
1304 platform_device_unregister(test_bus);
1309 * update_node_properties - adds the properties
1310 * of np into dup node (present in live tree) and
1311 * updates parent of children of np to dup.
1313 * @np: node whose properties are being added to the live tree
1314 * @dup: node present in live tree to be updated
1316 static void update_node_properties(struct device_node *np,
1317 struct device_node *dup)
1319 struct property *prop;
1320 struct property *save_next;
1321 struct device_node *child;
1324 for_each_child_of_node(np, child)
1325 child->parent = dup;
1328 * "unittest internal error: unable to add testdata property"
1330 * If this message reports a property in node '/__symbols__' then
1331 * the respective unittest overlay contains a label that has the
1332 * same name as a label in the live devicetree. The label will
1333 * be in the live devicetree only if the devicetree source was
1334 * compiled with the '-@' option. If you encounter this error,
1335 * please consider renaming __all__ of the labels in the unittest
1336 * overlay dts files with an odd prefix that is unlikely to be
1337 * used in a real devicetree.
1341 * open code for_each_property_of_node() because of_add_property()
1342 * sets prop->next to NULL
1344 for (prop = np->properties; prop != NULL; prop = save_next) {
1345 save_next = prop->next;
1346 ret = of_add_property(dup, prop);
1348 if (ret == -EEXIST && !strcmp(prop->name, "name"))
1350 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1357 * attach_node_and_children - attaches nodes
1358 * and its children to live tree.
1359 * CAUTION: misleading function name - if node @np already exists in
1360 * the live tree then children of @np are *not* attached to the live
1361 * tree. This works for the current test devicetree nodes because such
1362 * nodes do not have child nodes.
1364 * @np: Node to attach to live tree
1366 static void attach_node_and_children(struct device_node *np)
1368 struct device_node *next, *dup, *child;
1369 unsigned long flags;
1370 const char *full_name;
1372 full_name = kasprintf(GFP_KERNEL, "%pOF", np);
1374 if (!strcmp(full_name, "/__local_fixups__") ||
1375 !strcmp(full_name, "/__fixups__")) {
1380 dup = of_find_node_by_path(full_name);
1383 update_node_properties(np, dup);
1390 mutex_lock(&of_mutex);
1391 raw_spin_lock_irqsave(&devtree_lock, flags);
1392 np->sibling = np->parent->child;
1393 np->parent->child = np;
1394 of_node_clear_flag(np, OF_DETACHED);
1395 raw_spin_unlock_irqrestore(&devtree_lock, flags);
1397 __of_attach_node_sysfs(np);
1398 mutex_unlock(&of_mutex);
1401 next = child->sibling;
1402 attach_node_and_children(child);
1408 * unittest_data_add - Reads, copies data from
1409 * linked tree and attaches it to the live tree
1411 static int __init unittest_data_add(void)
1413 void *unittest_data;
1414 void *unittest_data_align;
1415 struct device_node *unittest_data_node = NULL, *np;
1417 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1418 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1420 extern uint8_t __dtb_testcases_begin[];
1421 extern uint8_t __dtb_testcases_end[];
1422 const int size = __dtb_testcases_end - __dtb_testcases_begin;
1427 pr_warn("%s: testcases is empty\n", __func__);
1432 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
1436 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
1437 memcpy(unittest_data_align, __dtb_testcases_begin, size);
1439 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
1441 pr_warn("%s: unflatten testcases tree failed\n", __func__);
1442 kfree(unittest_data);
1445 if (!unittest_data_node) {
1446 pr_warn("%s: testcases tree is empty\n", __func__);
1447 kfree(unittest_data);
1452 * This lock normally encloses of_resolve_phandles()
1454 of_overlay_mutex_lock();
1456 rc = of_resolve_phandles(unittest_data_node);
1458 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
1459 of_overlay_mutex_unlock();
1464 of_root = unittest_data_node;
1465 for_each_of_allnodes(np)
1466 __of_attach_node_sysfs(np);
1467 of_aliases = of_find_node_by_path("/aliases");
1468 of_chosen = of_find_node_by_path("/chosen");
1469 of_overlay_mutex_unlock();
1473 EXPECT_BEGIN(KERN_INFO,
1474 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1476 /* attach the sub-tree to live tree */
1477 np = unittest_data_node->child;
1479 struct device_node *next = np->sibling;
1481 np->parent = of_root;
1482 attach_node_and_children(np);
1486 EXPECT_END(KERN_INFO,
1487 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1489 of_overlay_mutex_unlock();
1494 #ifdef CONFIG_OF_OVERLAY
1495 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id);
1497 static int unittest_probe(struct platform_device *pdev)
1499 struct device *dev = &pdev->dev;
1500 struct device_node *np = dev->of_node;
1503 dev_err(dev, "No OF data for device\n");
1508 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1510 of_platform_populate(np, NULL, NULL, &pdev->dev);
1515 static int unittest_remove(struct platform_device *pdev)
1517 struct device *dev = &pdev->dev;
1518 struct device_node *np = dev->of_node;
1520 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1524 static const struct of_device_id unittest_match[] = {
1525 { .compatible = "unittest", },
1529 static struct platform_driver unittest_driver = {
1530 .probe = unittest_probe,
1531 .remove = unittest_remove,
1534 .of_match_table = of_match_ptr(unittest_match),
1538 /* get the platform device instantiated at the path */
1539 static struct platform_device *of_path_to_platform_device(const char *path)
1541 struct device_node *np;
1542 struct platform_device *pdev;
1544 np = of_find_node_by_path(path);
1548 pdev = of_find_device_by_node(np);
1554 /* find out if a platform device exists at that path */
1555 static int of_path_platform_device_exists(const char *path)
1557 struct platform_device *pdev;
1559 pdev = of_path_to_platform_device(path);
1560 platform_device_put(pdev);
1561 return pdev != NULL;
1564 #ifdef CONFIG_OF_GPIO
1566 struct unittest_gpio_dev {
1567 struct gpio_chip chip;
1570 static int unittest_gpio_chip_request_count;
1571 static int unittest_gpio_probe_count;
1572 static int unittest_gpio_probe_pass_count;
1574 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
1576 unittest_gpio_chip_request_count++;
1578 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset,
1579 unittest_gpio_chip_request_count);
1583 static int unittest_gpio_probe(struct platform_device *pdev)
1585 struct unittest_gpio_dev *devptr;
1588 unittest_gpio_probe_count++;
1590 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL);
1594 platform_set_drvdata(pdev, devptr);
1596 devptr->chip.of_node = pdev->dev.of_node;
1597 devptr->chip.label = "of-unittest-gpio";
1598 devptr->chip.base = -1; /* dynamic allocation */
1599 devptr->chip.ngpio = 5;
1600 devptr->chip.request = unittest_gpio_chip_request;
1602 ret = gpiochip_add_data(&devptr->chip, NULL);
1605 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret);
1608 unittest_gpio_probe_pass_count++;
1612 static int unittest_gpio_remove(struct platform_device *pdev)
1614 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
1615 struct device *dev = &pdev->dev;
1616 struct device_node *np = pdev->dev.of_node;
1618 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
1623 if (gdev->chip.base != -1)
1624 gpiochip_remove(&gdev->chip);
1626 platform_set_drvdata(pdev, NULL);
1632 static const struct of_device_id unittest_gpio_id[] = {
1633 { .compatible = "unittest-gpio", },
1637 static struct platform_driver unittest_gpio_driver = {
1638 .probe = unittest_gpio_probe,
1639 .remove = unittest_gpio_remove,
1641 .name = "unittest-gpio",
1642 .of_match_table = of_match_ptr(unittest_gpio_id),
1646 static void __init of_unittest_overlay_gpio(void)
1648 int chip_request_count;
1649 int probe_pass_count;
1653 * tests: apply overlays before registering driver
1654 * Similar to installing a driver as a module, the
1655 * driver is registered after applying the overlays.
1657 * The overlays are applied by overlay_data_apply()
1658 * instead of of_unittest_apply_overlay() so that they
1659 * will not be tracked. Thus they will not be removed
1660 * by of_unittest_destroy_tracked_overlays().
1662 * - apply overlay_gpio_01
1663 * - apply overlay_gpio_02a
1664 * - apply overlay_gpio_02b
1667 * register driver will result in
1668 * - probe and processing gpio hog for overlay_gpio_01
1669 * - probe for overlay_gpio_02a
1670 * - processing gpio for overlay_gpio_02b
1673 probe_pass_count = unittest_gpio_probe_pass_count;
1674 chip_request_count = unittest_gpio_chip_request_count;
1677 * overlay_gpio_01 contains gpio node and child gpio hog node
1678 * overlay_gpio_02a contains gpio node
1679 * overlay_gpio_02b contains child gpio hog node
1682 unittest(overlay_data_apply("overlay_gpio_01", NULL),
1683 "Adding overlay 'overlay_gpio_01' failed\n");
1685 unittest(overlay_data_apply("overlay_gpio_02a", NULL),
1686 "Adding overlay 'overlay_gpio_02a' failed\n");
1688 unittest(overlay_data_apply("overlay_gpio_02b", NULL),
1689 "Adding overlay 'overlay_gpio_02b' failed\n");
1692 * messages are the result of the probes, after the
1693 * driver is registered
1696 EXPECT_BEGIN(KERN_INFO,
1697 "gpio-<<int>> (line-B-input): hogged as input\n");
1699 EXPECT_BEGIN(KERN_INFO,
1700 "gpio-<<int>> (line-A-input): hogged as input\n");
1702 ret = platform_driver_register(&unittest_gpio_driver);
1703 if (unittest(ret == 0, "could not register unittest gpio driver\n"))
1706 EXPECT_END(KERN_INFO,
1707 "gpio-<<int>> (line-A-input): hogged as input\n");
1708 EXPECT_END(KERN_INFO,
1709 "gpio-<<int>> (line-B-input): hogged as input\n");
1711 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
1712 "unittest_gpio_probe() failed or not called\n");
1714 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
1715 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1716 unittest_gpio_chip_request_count - chip_request_count);
1719 * tests: apply overlays after registering driver
1721 * Similar to a driver built-in to the kernel, the
1722 * driver is registered before applying the overlays.
1724 * overlay_gpio_03 contains gpio node and child gpio hog node
1726 * - apply overlay_gpio_03
1728 * apply overlay will result in
1729 * - probe and processing gpio hog.
1732 probe_pass_count = unittest_gpio_probe_pass_count;
1733 chip_request_count = unittest_gpio_chip_request_count;
1735 EXPECT_BEGIN(KERN_INFO,
1736 "gpio-<<int>> (line-D-input): hogged as input\n");
1738 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1740 unittest(overlay_data_apply("overlay_gpio_03", NULL),
1741 "Adding overlay 'overlay_gpio_03' failed\n");
1743 EXPECT_END(KERN_INFO,
1744 "gpio-<<int>> (line-D-input): hogged as input\n");
1746 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1747 "unittest_gpio_probe() failed or not called\n");
1749 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1750 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1751 unittest_gpio_chip_request_count - chip_request_count);
1754 * overlay_gpio_04a contains gpio node
1756 * - apply overlay_gpio_04a
1758 * apply the overlay will result in
1759 * - probe for overlay_gpio_04a
1762 probe_pass_count = unittest_gpio_probe_pass_count;
1763 chip_request_count = unittest_gpio_chip_request_count;
1765 /* overlay_gpio_04a contains gpio node */
1767 unittest(overlay_data_apply("overlay_gpio_04a", NULL),
1768 "Adding overlay 'overlay_gpio_04a' failed\n");
1770 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
1771 "unittest_gpio_probe() failed or not called\n");
1774 * overlay_gpio_04b contains child gpio hog node
1776 * - apply overlay_gpio_04b
1778 * apply the overlay will result in
1779 * - processing gpio for overlay_gpio_04b
1782 EXPECT_BEGIN(KERN_INFO,
1783 "gpio-<<int>> (line-C-input): hogged as input\n");
1785 /* overlay_gpio_04b contains child gpio hog node */
1787 unittest(overlay_data_apply("overlay_gpio_04b", NULL),
1788 "Adding overlay 'overlay_gpio_04b' failed\n");
1790 EXPECT_END(KERN_INFO,
1791 "gpio-<<int>> (line-C-input): hogged as input\n");
1793 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
1794 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1795 unittest_gpio_chip_request_count - chip_request_count);
1800 static void __init of_unittest_overlay_gpio(void)
1807 #if IS_BUILTIN(CONFIG_I2C)
1809 /* get the i2c client device instantiated at the path */
1810 static struct i2c_client *of_path_to_i2c_client(const char *path)
1812 struct device_node *np;
1813 struct i2c_client *client;
1815 np = of_find_node_by_path(path);
1819 client = of_find_i2c_device_by_node(np);
1825 /* find out if a i2c client device exists at that path */
1826 static int of_path_i2c_client_exists(const char *path)
1828 struct i2c_client *client;
1830 client = of_path_to_i2c_client(path);
1832 put_device(&client->dev);
1833 return client != NULL;
1836 static int of_path_i2c_client_exists(const char *path)
1847 static int of_path_device_type_exists(const char *path,
1848 enum overlay_type ovtype)
1852 return of_path_platform_device_exists(path);
1854 return of_path_i2c_client_exists(path);
1859 static const char *unittest_path(int nr, enum overlay_type ovtype)
1862 static char buf[256];
1866 base = "/testcase-data/overlay-node/test-bus";
1869 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1875 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr);
1876 buf[sizeof(buf) - 1] = '\0';
1880 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
1884 path = unittest_path(unittest_nr, ovtype);
1888 return of_path_platform_device_exists(path);
1890 return of_path_i2c_client_exists(path);
1895 static const char *overlay_name_from_nr(int nr)
1897 static char buf[256];
1899 snprintf(buf, sizeof(buf) - 1,
1901 buf[sizeof(buf) - 1] = '\0';
1906 static const char *bus_path = "/testcase-data/overlay-node/test-bus";
1908 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1910 #define MAX_UNITTEST_OVERLAYS 256
1911 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)];
1912 static int overlay_first_id = -1;
1914 static long of_unittest_overlay_tracked(int id)
1916 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1918 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id);
1921 static void of_unittest_track_overlay(int id)
1923 if (overlay_first_id < 0)
1924 overlay_first_id = id;
1925 id -= overlay_first_id;
1927 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1929 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id);
1932 static void of_unittest_untrack_overlay(int id)
1934 if (overlay_first_id < 0)
1936 id -= overlay_first_id;
1937 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS))
1939 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id);
1942 static void of_unittest_destroy_tracked_overlays(void)
1944 int id, ret, defers, ovcs_id;
1946 if (overlay_first_id < 0)
1949 /* try until no defers */
1952 /* remove in reverse order */
1953 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) {
1954 if (!of_unittest_overlay_tracked(id))
1957 ovcs_id = id + overlay_first_id;
1958 ret = of_overlay_remove(&ovcs_id);
1959 if (ret == -ENODEV) {
1960 pr_warn("%s: no overlay to destroy for #%d\n",
1961 __func__, id + overlay_first_id);
1966 pr_warn("%s: overlay destroy failed for #%d\n",
1967 __func__, id + overlay_first_id);
1971 of_unittest_untrack_overlay(id);
1973 } while (defers > 0);
1976 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
1978 const char *overlay_name;
1980 overlay_name = overlay_name_from_nr(overlay_nr);
1982 if (!overlay_data_apply(overlay_name, overlay_id)) {
1983 unittest(0, "could not apply overlay \"%s\"\n",
1987 of_unittest_track_overlay(*overlay_id);
1992 /* apply an overlay while checking before and after states */
1993 static int __init of_unittest_apply_overlay_check(int overlay_nr,
1994 int unittest_nr, int before, int after,
1995 enum overlay_type ovtype)
1999 /* unittest device must not be in before state */
2000 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2001 unittest(0, "%s with device @\"%s\" %s\n",
2002 overlay_name_from_nr(overlay_nr),
2003 unittest_path(unittest_nr, ovtype),
2004 !before ? "enabled" : "disabled");
2009 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2011 /* of_unittest_apply_overlay already called unittest() */
2015 /* unittest device must be to set to after state */
2016 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2017 unittest(0, "%s failed to create @\"%s\" %s\n",
2018 overlay_name_from_nr(overlay_nr),
2019 unittest_path(unittest_nr, ovtype),
2020 !after ? "enabled" : "disabled");
2027 /* apply an overlay and then revert it while checking before, after states */
2028 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
2029 int unittest_nr, int before, int after,
2030 enum overlay_type ovtype)
2032 int ret, ovcs_id, save_id;
2034 /* unittest device must be in before state */
2035 if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
2036 unittest(0, "%s with device @\"%s\" %s\n",
2037 overlay_name_from_nr(overlay_nr),
2038 unittest_path(unittest_nr, ovtype),
2039 !before ? "enabled" : "disabled");
2043 /* apply the overlay */
2045 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
2047 /* of_unittest_apply_overlay already called unittest() */
2051 /* unittest device must be in after state */
2052 if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
2053 unittest(0, "%s failed to create @\"%s\" %s\n",
2054 overlay_name_from_nr(overlay_nr),
2055 unittest_path(unittest_nr, ovtype),
2056 !after ? "enabled" : "disabled");
2061 ret = of_overlay_remove(&ovcs_id);
2063 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2064 overlay_name_from_nr(overlay_nr),
2065 unittest_path(unittest_nr, ovtype));
2068 of_unittest_untrack_overlay(save_id);
2070 /* unittest device must be again in before state */
2071 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) {
2072 unittest(0, "%s with device @\"%s\" %s\n",
2073 overlay_name_from_nr(overlay_nr),
2074 unittest_path(unittest_nr, ovtype),
2075 !before ? "enabled" : "disabled");
2082 /* test activation of device */
2083 static void __init of_unittest_overlay_0(void)
2087 EXPECT_BEGIN(KERN_INFO,
2088 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2090 /* device should enable */
2091 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
2093 EXPECT_END(KERN_INFO,
2094 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2099 unittest(1, "overlay test %d passed\n", 0);
2102 /* test deactivation of device */
2103 static void __init of_unittest_overlay_1(void)
2107 EXPECT_BEGIN(KERN_INFO,
2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2110 /* device should disable */
2111 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
2113 EXPECT_END(KERN_INFO,
2114 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2119 unittest(1, "overlay test %d passed\n", 1);
2123 /* test activation of device */
2124 static void __init of_unittest_overlay_2(void)
2128 EXPECT_BEGIN(KERN_INFO,
2129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2131 /* device should enable */
2132 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
2134 EXPECT_END(KERN_INFO,
2135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2139 unittest(1, "overlay test %d passed\n", 2);
2142 /* test deactivation of device */
2143 static void __init of_unittest_overlay_3(void)
2147 EXPECT_BEGIN(KERN_INFO,
2148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2150 /* device should disable */
2151 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
2153 EXPECT_END(KERN_INFO,
2154 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2159 unittest(1, "overlay test %d passed\n", 3);
2162 /* test activation of a full device node */
2163 static void __init of_unittest_overlay_4(void)
2165 /* device should disable */
2166 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY))
2169 unittest(1, "overlay test %d passed\n", 4);
2172 /* test overlay apply/revert sequence */
2173 static void __init of_unittest_overlay_5(void)
2177 EXPECT_BEGIN(KERN_INFO,
2178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2180 /* device should disable */
2181 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
2183 EXPECT_END(KERN_INFO,
2184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2189 unittest(1, "overlay test %d passed\n", 5);
2192 /* test overlay application in sequence */
2193 static void __init of_unittest_overlay_6(void)
2195 int i, ov_id[2], ovcs_id;
2196 int overlay_nr = 6, unittest_nr = 6;
2197 int before = 0, after = 1;
2198 const char *overlay_name;
2202 /* unittest device must be in before state */
2203 for (i = 0; i < 2; i++) {
2204 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2206 unittest(0, "%s with device @\"%s\" %s\n",
2207 overlay_name_from_nr(overlay_nr + i),
2208 unittest_path(unittest_nr + i,
2210 !before ? "enabled" : "disabled");
2215 /* apply the overlays */
2217 EXPECT_BEGIN(KERN_INFO,
2218 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2220 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2222 ret = overlay_data_apply(overlay_name, &ovcs_id);
2225 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2229 of_unittest_track_overlay(ov_id[0]);
2231 EXPECT_END(KERN_INFO,
2232 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2234 EXPECT_BEGIN(KERN_INFO,
2235 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2237 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2239 ret = overlay_data_apply(overlay_name, &ovcs_id);
2242 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2246 of_unittest_track_overlay(ov_id[1]);
2248 EXPECT_END(KERN_INFO,
2249 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2252 for (i = 0; i < 2; i++) {
2253 /* unittest device must be in after state */
2254 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2256 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2257 overlay_name_from_nr(overlay_nr + i),
2258 unittest_path(unittest_nr + i,
2260 !after ? "enabled" : "disabled");
2265 for (i = 1; i >= 0; i--) {
2267 if (of_overlay_remove(&ovcs_id)) {
2268 unittest(0, "%s failed destroy @\"%s\"\n",
2269 overlay_name_from_nr(overlay_nr + i),
2270 unittest_path(unittest_nr + i,
2274 of_unittest_untrack_overlay(ov_id[i]);
2277 for (i = 0; i < 2; i++) {
2278 /* unittest device must be again in before state */
2279 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
2281 unittest(0, "%s with device @\"%s\" %s\n",
2282 overlay_name_from_nr(overlay_nr + i),
2283 unittest_path(unittest_nr + i,
2285 !before ? "enabled" : "disabled");
2290 unittest(1, "overlay test %d passed\n", 6);
2294 /* test overlay application in sequence */
2295 static void __init of_unittest_overlay_8(void)
2297 int i, ov_id[2], ovcs_id;
2298 int overlay_nr = 8, unittest_nr = 8;
2299 const char *overlay_name;
2302 /* we don't care about device state in this test */
2304 EXPECT_BEGIN(KERN_INFO,
2305 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2307 overlay_name = overlay_name_from_nr(overlay_nr + 0);
2309 ret = overlay_data_apply(overlay_name, &ovcs_id);
2311 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2313 EXPECT_END(KERN_INFO,
2314 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2320 of_unittest_track_overlay(ov_id[0]);
2322 overlay_name = overlay_name_from_nr(overlay_nr + 1);
2324 EXPECT_BEGIN(KERN_INFO,
2325 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2327 /* apply the overlays */
2328 ret = overlay_data_apply(overlay_name, &ovcs_id);
2330 EXPECT_END(KERN_INFO,
2331 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2334 unittest(0, "could not apply overlay \"%s\"\n", overlay_name);
2339 of_unittest_track_overlay(ov_id[1]);
2341 /* now try to remove first overlay (it should fail) */
2344 EXPECT_BEGIN(KERN_INFO,
2345 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2347 EXPECT_BEGIN(KERN_INFO,
2348 "OF: overlay: overlay #6 is not topmost");
2350 ret = of_overlay_remove(&ovcs_id);
2352 EXPECT_END(KERN_INFO,
2353 "OF: overlay: overlay #6 is not topmost");
2355 EXPECT_END(KERN_INFO,
2356 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2359 unittest(0, "%s was destroyed @\"%s\"\n",
2360 overlay_name_from_nr(overlay_nr + 0),
2361 unittest_path(unittest_nr,
2366 /* removing them in order should work */
2367 for (i = 1; i >= 0; i--) {
2369 if (of_overlay_remove(&ovcs_id)) {
2370 unittest(0, "%s not destroyed @\"%s\"\n",
2371 overlay_name_from_nr(overlay_nr + i),
2372 unittest_path(unittest_nr,
2376 of_unittest_untrack_overlay(ov_id[i]);
2379 unittest(1, "overlay test %d passed\n", 8);
2382 /* test insertion of a bus with parent devices */
2383 static void __init of_unittest_overlay_10(void)
2388 /* device should disable */
2389 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
2391 if (unittest(ret == 0,
2392 "overlay test %d failed; overlay application\n", 10))
2395 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101",
2396 unittest_path(10, PDEV_OVERLAY));
2397 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10))
2400 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
2403 unittest(ret, "overlay test %d failed; no child device\n", 10);
2406 /* test insertion of a bus with parent devices (and revert) */
2407 static void __init of_unittest_overlay_11(void)
2411 /* device should disable */
2412 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2415 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11);
2418 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2420 struct unittest_i2c_bus_data {
2421 struct platform_device *pdev;
2422 struct i2c_adapter adap;
2425 static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
2426 struct i2c_msg *msgs, int num)
2428 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
2435 static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
2437 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
2440 static const struct i2c_algorithm unittest_i2c_algo = {
2441 .master_xfer = unittest_i2c_master_xfer,
2442 .functionality = unittest_i2c_functionality,
2445 static int unittest_i2c_bus_probe(struct platform_device *pdev)
2447 struct device *dev = &pdev->dev;
2448 struct device_node *np = dev->of_node;
2449 struct unittest_i2c_bus_data *std;
2450 struct i2c_adapter *adap;
2454 dev_err(dev, "No OF data for device\n");
2459 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2461 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
2465 /* link them together */
2467 platform_set_drvdata(pdev, std);
2470 i2c_set_adapdata(adap, std);
2472 strlcpy(adap->name, pdev->name, sizeof(adap->name));
2473 adap->class = I2C_CLASS_DEPRECATED;
2474 adap->algo = &unittest_i2c_algo;
2475 adap->dev.parent = dev;
2476 adap->dev.of_node = dev->of_node;
2477 adap->timeout = 5 * HZ;
2480 ret = i2c_add_numbered_adapter(adap);
2482 dev_err(dev, "Failed to add I2C adapter\n");
2489 static int unittest_i2c_bus_remove(struct platform_device *pdev)
2491 struct device *dev = &pdev->dev;
2492 struct device_node *np = dev->of_node;
2493 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
2495 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2496 i2c_del_adapter(&std->adap);
2501 static const struct of_device_id unittest_i2c_bus_match[] = {
2502 { .compatible = "unittest-i2c-bus", },
2506 static struct platform_driver unittest_i2c_bus_driver = {
2507 .probe = unittest_i2c_bus_probe,
2508 .remove = unittest_i2c_bus_remove,
2510 .name = "unittest-i2c-bus",
2511 .of_match_table = of_match_ptr(unittest_i2c_bus_match),
2515 static int unittest_i2c_dev_probe(struct i2c_client *client,
2516 const struct i2c_device_id *id)
2518 struct device *dev = &client->dev;
2519 struct device_node *np = client->dev.of_node;
2522 dev_err(dev, "No OF node\n");
2526 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2531 static int unittest_i2c_dev_remove(struct i2c_client *client)
2533 struct device *dev = &client->dev;
2534 struct device_node *np = client->dev.of_node;
2536 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2540 static const struct i2c_device_id unittest_i2c_dev_id[] = {
2541 { .name = "unittest-i2c-dev" },
2545 static struct i2c_driver unittest_i2c_dev_driver = {
2547 .name = "unittest-i2c-dev",
2549 .probe = unittest_i2c_dev_probe,
2550 .remove = unittest_i2c_dev_remove,
2551 .id_table = unittest_i2c_dev_id,
2554 #if IS_BUILTIN(CONFIG_I2C_MUX)
2556 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
2561 static int unittest_i2c_mux_probe(struct i2c_client *client,
2562 const struct i2c_device_id *id)
2565 struct device *dev = &client->dev;
2566 struct i2c_adapter *adap = client->adapter;
2567 struct device_node *np = client->dev.of_node, *child;
2568 struct i2c_mux_core *muxc;
2571 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2574 dev_err(dev, "No OF node\n");
2579 for_each_child_of_node(np, child) {
2580 if (of_property_read_u32(child, "reg", ®))
2582 if (max_reg == (u32)-1 || reg > max_reg)
2585 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
2587 dev_err(dev, "No channels\n");
2591 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
2592 unittest_i2c_mux_select_chan, NULL);
2595 for (i = 0; i < nchans; i++) {
2596 if (i2c_mux_add_adapter(muxc, 0, i, 0)) {
2597 dev_err(dev, "Failed to register mux #%d\n", i);
2598 i2c_mux_del_adapters(muxc);
2603 i2c_set_clientdata(client, muxc);
2608 static int unittest_i2c_mux_remove(struct i2c_client *client)
2610 struct device *dev = &client->dev;
2611 struct device_node *np = client->dev.of_node;
2612 struct i2c_mux_core *muxc = i2c_get_clientdata(client);
2614 dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
2615 i2c_mux_del_adapters(muxc);
2619 static const struct i2c_device_id unittest_i2c_mux_id[] = {
2620 { .name = "unittest-i2c-mux" },
2624 static struct i2c_driver unittest_i2c_mux_driver = {
2626 .name = "unittest-i2c-mux",
2628 .probe = unittest_i2c_mux_probe,
2629 .remove = unittest_i2c_mux_remove,
2630 .id_table = unittest_i2c_mux_id,
2635 static int of_unittest_overlay_i2c_init(void)
2639 ret = i2c_add_driver(&unittest_i2c_dev_driver);
2640 if (unittest(ret == 0,
2641 "could not register unittest i2c device driver\n"))
2644 ret = platform_driver_register(&unittest_i2c_bus_driver);
2646 if (unittest(ret == 0,
2647 "could not register unittest i2c bus driver\n"))
2650 #if IS_BUILTIN(CONFIG_I2C_MUX)
2652 EXPECT_BEGIN(KERN_INFO,
2653 "i2c i2c-1: Added multiplexed i2c bus 2");
2655 ret = i2c_add_driver(&unittest_i2c_mux_driver);
2657 EXPECT_END(KERN_INFO,
2658 "i2c i2c-1: Added multiplexed i2c bus 2");
2660 if (unittest(ret == 0,
2661 "could not register unittest i2c mux driver\n"))
2668 static void of_unittest_overlay_i2c_cleanup(void)
2670 #if IS_BUILTIN(CONFIG_I2C_MUX)
2671 i2c_del_driver(&unittest_i2c_mux_driver);
2673 platform_driver_unregister(&unittest_i2c_bus_driver);
2674 i2c_del_driver(&unittest_i2c_dev_driver);
2677 static void __init of_unittest_overlay_i2c_12(void)
2681 /* device should enable */
2682 EXPECT_BEGIN(KERN_INFO,
2683 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2685 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
2687 EXPECT_END(KERN_INFO,
2688 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2693 unittest(1, "overlay test %d passed\n", 12);
2696 /* test deactivation of device */
2697 static void __init of_unittest_overlay_i2c_13(void)
2701 EXPECT_BEGIN(KERN_INFO,
2702 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2704 /* device should disable */
2705 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
2707 EXPECT_END(KERN_INFO,
2708 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2713 unittest(1, "overlay test %d passed\n", 13);
2716 /* just check for i2c mux existence */
2717 static void of_unittest_overlay_i2c_14(void)
2721 static void __init of_unittest_overlay_i2c_15(void)
2725 /* device should enable */
2726 EXPECT_BEGIN(KERN_INFO,
2727 "i2c i2c-1: Added multiplexed i2c bus 3");
2729 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY);
2731 EXPECT_END(KERN_INFO,
2732 "i2c i2c-1: Added multiplexed i2c bus 3");
2737 unittest(1, "overlay test %d passed\n", 15);
2742 static inline void of_unittest_overlay_i2c_14(void) { }
2743 static inline void of_unittest_overlay_i2c_15(void) { }
2747 static void __init of_unittest_overlay(void)
2749 struct device_node *bus_np = NULL;
2751 if (platform_driver_register(&unittest_driver)) {
2752 unittest(0, "could not register unittest driver\n");
2756 bus_np = of_find_node_by_path(bus_path);
2757 if (bus_np == NULL) {
2758 unittest(0, "could not find bus_path \"%s\"\n", bus_path);
2762 if (of_platform_default_populate(bus_np, NULL, NULL)) {
2763 unittest(0, "could not populate bus @ \"%s\"\n", bus_path);
2767 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) {
2768 unittest(0, "could not find unittest0 @ \"%s\"\n",
2769 unittest_path(100, PDEV_OVERLAY));
2773 if (of_unittest_device_exists(101, PDEV_OVERLAY)) {
2774 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2775 unittest_path(101, PDEV_OVERLAY));
2779 unittest(1, "basic infrastructure of overlays passed");
2781 /* tests in sequence */
2782 of_unittest_overlay_0();
2783 of_unittest_overlay_1();
2784 of_unittest_overlay_2();
2785 of_unittest_overlay_3();
2786 of_unittest_overlay_4();
2787 of_unittest_overlay_5();
2788 of_unittest_overlay_6();
2789 of_unittest_overlay_8();
2791 of_unittest_overlay_10();
2792 of_unittest_overlay_11();
2794 #if IS_BUILTIN(CONFIG_I2C)
2795 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2798 of_unittest_overlay_i2c_12();
2799 of_unittest_overlay_i2c_13();
2800 of_unittest_overlay_i2c_14();
2801 of_unittest_overlay_i2c_15();
2803 of_unittest_overlay_i2c_cleanup();
2806 of_unittest_overlay_gpio();
2808 of_unittest_destroy_tracked_overlays();
2811 of_node_put(bus_np);
2815 static inline void __init of_unittest_overlay(void) { }
2818 #ifdef CONFIG_OF_OVERLAY
2821 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2822 * in scripts/Makefile.lib
2825 #define OVERLAY_INFO_EXTERN(name) \
2826 extern uint8_t __dtb_##name##_begin[]; \
2827 extern uint8_t __dtb_##name##_end[]
2829 #define OVERLAY_INFO(overlay_name, expected) \
2830 { .dtb_begin = __dtb_##overlay_name##_begin, \
2831 .dtb_end = __dtb_##overlay_name##_end, \
2832 .expected_result = expected, \
2833 .name = #overlay_name, \
2836 struct overlay_info {
2839 int expected_result;
2844 OVERLAY_INFO_EXTERN(overlay_base);
2845 OVERLAY_INFO_EXTERN(overlay);
2846 OVERLAY_INFO_EXTERN(overlay_0);
2847 OVERLAY_INFO_EXTERN(overlay_1);
2848 OVERLAY_INFO_EXTERN(overlay_2);
2849 OVERLAY_INFO_EXTERN(overlay_3);
2850 OVERLAY_INFO_EXTERN(overlay_4);
2851 OVERLAY_INFO_EXTERN(overlay_5);
2852 OVERLAY_INFO_EXTERN(overlay_6);
2853 OVERLAY_INFO_EXTERN(overlay_7);
2854 OVERLAY_INFO_EXTERN(overlay_8);
2855 OVERLAY_INFO_EXTERN(overlay_9);
2856 OVERLAY_INFO_EXTERN(overlay_10);
2857 OVERLAY_INFO_EXTERN(overlay_11);
2858 OVERLAY_INFO_EXTERN(overlay_12);
2859 OVERLAY_INFO_EXTERN(overlay_13);
2860 OVERLAY_INFO_EXTERN(overlay_15);
2861 OVERLAY_INFO_EXTERN(overlay_gpio_01);
2862 OVERLAY_INFO_EXTERN(overlay_gpio_02a);
2863 OVERLAY_INFO_EXTERN(overlay_gpio_02b);
2864 OVERLAY_INFO_EXTERN(overlay_gpio_03);
2865 OVERLAY_INFO_EXTERN(overlay_gpio_04a);
2866 OVERLAY_INFO_EXTERN(overlay_gpio_04b);
2867 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
2868 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
2869 OVERLAY_INFO_EXTERN(overlay_bad_phandle);
2870 OVERLAY_INFO_EXTERN(overlay_bad_symbol);
2872 /* entries found by name */
2873 static struct overlay_info overlays[] = {
2874 OVERLAY_INFO(overlay_base, -9999),
2875 OVERLAY_INFO(overlay, 0),
2876 OVERLAY_INFO(overlay_0, 0),
2877 OVERLAY_INFO(overlay_1, 0),
2878 OVERLAY_INFO(overlay_2, 0),
2879 OVERLAY_INFO(overlay_3, 0),
2880 OVERLAY_INFO(overlay_4, 0),
2881 OVERLAY_INFO(overlay_5, 0),
2882 OVERLAY_INFO(overlay_6, 0),
2883 OVERLAY_INFO(overlay_7, 0),
2884 OVERLAY_INFO(overlay_8, 0),
2885 OVERLAY_INFO(overlay_9, 0),
2886 OVERLAY_INFO(overlay_10, 0),
2887 OVERLAY_INFO(overlay_11, 0),
2888 OVERLAY_INFO(overlay_12, 0),
2889 OVERLAY_INFO(overlay_13, 0),
2890 OVERLAY_INFO(overlay_15, 0),
2891 OVERLAY_INFO(overlay_gpio_01, 0),
2892 OVERLAY_INFO(overlay_gpio_02a, 0),
2893 OVERLAY_INFO(overlay_gpio_02b, 0),
2894 OVERLAY_INFO(overlay_gpio_03, 0),
2895 OVERLAY_INFO(overlay_gpio_04a, 0),
2896 OVERLAY_INFO(overlay_gpio_04b, 0),
2897 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
2898 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
2899 OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
2900 OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
2902 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
2905 static struct device_node *overlay_base_root;
2907 static void * __init dt_alloc_memory(u64 size, u64 align)
2909 void *ptr = memblock_alloc(size, align);
2912 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2913 __func__, size, align);
2919 * Create base device tree for the overlay unittest.
2921 * This is called from very early boot code.
2923 * Do as much as possible the same way as done in __unflatten_device_tree
2924 * and other early boot steps for the normal FDT so that the overlay base
2925 * unflattened tree will have the same characteristics as the real tree
2926 * (such as having memory allocated by the early allocator). The goal
2927 * is to test "the real thing" as much as possible, and test "test setup
2928 * code" as little as possible.
2930 * Have to stop before resolving phandles, because that uses kmalloc.
2932 void __init unittest_unflatten_overlay_base(void)
2934 struct overlay_info *info;
2939 const char *overlay_name = "overlay_base";
2941 for (info = overlays; info && info->name; info++) {
2942 if (!strcmp(overlay_name, info->name)) {
2948 pr_err("no overlay data for %s\n", overlay_name);
2952 info = &overlays[0];
2954 if (info->expected_result != -9999) {
2955 pr_err("No dtb 'overlay_base' to attach\n");
2959 data_size = info->dtb_end - info->dtb_begin;
2961 pr_err("No dtb 'overlay_base' to attach\n");
2965 size = fdt_totalsize(info->dtb_begin);
2966 if (size != data_size) {
2967 pr_err("dtb 'overlay_base' header totalsize != actual size");
2971 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
2973 pr_err("alloc for dtb 'overlay_base' failed");
2977 memcpy(new_fdt, info->dtb_begin, size);
2979 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
2980 dt_alloc_memory, true);
2984 * The purpose of of_unittest_overlay_data_add is to add an
2985 * overlay in the normal fashion. This is a test of the whole
2986 * picture, instead of testing individual elements.
2988 * A secondary purpose is to be able to verify that the contents of
2989 * /proc/device-tree/ contains the updated structure and values from
2990 * the overlay. That must be verified separately in user space.
2992 * Return 0 on unexpected error.
2994 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
2996 struct overlay_info *info;
3001 for (info = overlays; info && info->name; info++) {
3002 if (!strcmp(overlay_name, info->name)) {
3008 pr_err("no overlay data for %s\n", overlay_name);
3012 size = info->dtb_end - info->dtb_begin;
3014 pr_err("no overlay data for %s\n", overlay_name);
3016 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id);
3018 *overlay_id = info->overlay_id;
3022 pr_debug("%s applied\n", overlay_name);
3025 if (ret != info->expected_result)
3026 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3027 info->expected_result, ret, overlay_name);
3029 return (ret == info->expected_result);
3033 * The purpose of of_unittest_overlay_high_level is to add an overlay
3034 * in the normal fashion. This is a test of the whole picture,
3035 * instead of individual elements.
3037 * The first part of the function is _not_ normal overlay usage; it is
3038 * finishing splicing the base overlay device tree into the live tree.
3040 static __init void of_unittest_overlay_high_level(void)
3042 struct device_node *last_sibling;
3043 struct device_node *np;
3044 struct device_node *of_symbols;
3045 struct device_node *overlay_base_symbols;
3046 struct device_node **pprev;
3047 struct property *prop;
3050 if (!overlay_base_root) {
3051 unittest(0, "overlay_base_root not initialized\n");
3056 * Could not fixup phandles in unittest_unflatten_overlay_base()
3057 * because kmalloc() was not yet available.
3059 of_overlay_mutex_lock();
3060 of_resolve_phandles(overlay_base_root);
3061 of_overlay_mutex_unlock();
3065 * do not allow overlay_base to duplicate any node already in
3066 * tree, this greatly simplifies the code
3070 * remove overlay_base_root node "__local_fixups", after
3071 * being used by of_resolve_phandles()
3073 pprev = &overlay_base_root->child;
3074 for (np = overlay_base_root->child; np; np = np->sibling) {
3075 if (of_node_name_eq(np, "__local_fixups__")) {
3076 *pprev = np->sibling;
3079 pprev = &np->sibling;
3082 /* remove overlay_base_root node "__symbols__" if in live tree */
3083 of_symbols = of_get_child_by_name(of_root, "__symbols__");
3085 /* will have to graft properties from node into live tree */
3086 pprev = &overlay_base_root->child;
3087 for (np = overlay_base_root->child; np; np = np->sibling) {
3088 if (of_node_name_eq(np, "__symbols__")) {
3089 overlay_base_symbols = np;
3090 *pprev = np->sibling;
3093 pprev = &np->sibling;
3097 for_each_child_of_node(overlay_base_root, np) {
3098 struct device_node *base_child;
3099 for_each_child_of_node(of_root, base_child) {
3100 if (!strcmp(np->full_name, base_child->full_name)) {
3101 unittest(0, "illegal node name in overlay_base %pOFn",
3104 of_node_put(base_child);
3111 * overlay 'overlay_base' is not allowed to have root
3112 * properties, so only need to splice nodes into main device tree.
3114 * root node of *overlay_base_root will not be freed, it is lost
3118 for (np = overlay_base_root->child; np; np = np->sibling)
3119 np->parent = of_root;
3121 mutex_lock(&of_mutex);
3123 for (last_sibling = np = of_root->child; np; np = np->sibling)
3127 last_sibling->sibling = overlay_base_root->child;
3129 of_root->child = overlay_base_root->child;
3131 for_each_of_allnodes_from(overlay_base_root, np)
3132 __of_attach_node_sysfs(np);
3135 struct property *new_prop;
3136 for_each_property_of_node(overlay_base_symbols, prop) {
3138 new_prop = __of_prop_dup(prop, GFP_KERNEL);
3140 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3144 if (__of_add_property(of_symbols, new_prop)) {
3145 kfree(new_prop->name);
3146 kfree(new_prop->value);
3148 /* "name" auto-generated by unflatten */
3149 if (!strcmp(prop->name, "name"))
3151 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3155 if (__of_add_property_sysfs(of_symbols, new_prop)) {
3156 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3163 mutex_unlock(&of_mutex);
3166 /* now do the normal overlay usage test */
3168 EXPECT_BEGIN(KERN_ERR,
3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3170 EXPECT_BEGIN(KERN_ERR,
3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3172 EXPECT_BEGIN(KERN_ERR,
3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3174 EXPECT_BEGIN(KERN_ERR,
3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3176 EXPECT_BEGIN(KERN_ERR,
3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3178 EXPECT_BEGIN(KERN_ERR,
3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3180 EXPECT_BEGIN(KERN_ERR,
3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3182 EXPECT_BEGIN(KERN_ERR,
3183 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3184 EXPECT_BEGIN(KERN_ERR,
3185 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3186 EXPECT_BEGIN(KERN_ERR,
3187 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3188 EXPECT_BEGIN(KERN_ERR,
3189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3191 ret = overlay_data_apply("overlay", NULL);
3193 EXPECT_END(KERN_ERR,
3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3195 EXPECT_END(KERN_ERR,
3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3197 EXPECT_END(KERN_ERR,
3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3199 EXPECT_END(KERN_ERR,
3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3201 EXPECT_END(KERN_ERR,
3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3203 EXPECT_END(KERN_ERR,
3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3205 EXPECT_END(KERN_ERR,
3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3207 EXPECT_END(KERN_ERR,
3208 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3209 EXPECT_END(KERN_ERR,
3210 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3211 EXPECT_END(KERN_ERR,
3212 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3213 EXPECT_END(KERN_ERR,
3214 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3216 unittest(ret, "Adding overlay 'overlay' failed\n");
3218 EXPECT_BEGIN(KERN_ERR,
3219 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3220 EXPECT_BEGIN(KERN_ERR,
3221 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3223 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
3224 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3226 EXPECT_END(KERN_ERR,
3227 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3228 EXPECT_END(KERN_ERR,
3229 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3231 EXPECT_BEGIN(KERN_ERR,
3232 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3233 EXPECT_BEGIN(KERN_ERR,
3234 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3235 EXPECT_BEGIN(KERN_ERR,
3236 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3238 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
3239 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3241 EXPECT_END(KERN_ERR,
3242 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3243 EXPECT_END(KERN_ERR,
3244 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3245 EXPECT_END(KERN_ERR,
3246 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3248 unittest(overlay_data_apply("overlay_bad_phandle", NULL),
3249 "Adding overlay 'overlay_bad_phandle' failed\n");
3251 unittest(overlay_data_apply("overlay_bad_symbol", NULL),
3252 "Adding overlay 'overlay_bad_symbol' failed\n");
3257 mutex_unlock(&of_mutex);
3262 static inline __init void of_unittest_overlay_high_level(void) {}
3266 static int __init of_unittest(void)
3268 struct device_node *np;
3271 pr_info("start of unittest - you will see error messages\n");
3273 /* adding data for unittest */
3275 if (IS_ENABLED(CONFIG_UML))
3276 unittest_unflatten_overlay_base();
3278 res = unittest_data_add();
3282 of_aliases = of_find_node_by_path("/aliases");
3284 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3286 pr_info("No testcase data in device tree; not running tests\n");
3291 of_unittest_check_tree_linkage();
3292 of_unittest_check_phandles();
3293 of_unittest_find_node_by_name();
3294 of_unittest_dynamic();
3295 of_unittest_parse_phandle_with_args();
3296 of_unittest_parse_phandle_with_args_map();
3297 of_unittest_printf();
3298 of_unittest_property_string();
3299 of_unittest_property_copy();
3300 of_unittest_changeset();
3301 of_unittest_parse_interrupts();
3302 of_unittest_parse_interrupts_extended();
3303 of_unittest_dma_get_max_cpu_address();
3304 of_unittest_parse_dma_ranges();
3305 of_unittest_pci_dma_ranges();
3306 of_unittest_match_node();
3307 of_unittest_platform_populate();
3308 of_unittest_overlay();
3310 /* Double check linkage after removing testcase data */
3311 of_unittest_check_tree_linkage();
3313 of_unittest_overlay_high_level();
3315 pr_info("end of unittest - %i passed, %i failed\n",
3316 unittest_results.passed, unittest_results.failed);
3320 late_initcall(of_unittest);