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 passed
&= (args
.args_count
== 1);
1134 passed
&= (args
.args
[0] == 15);
1140 unittest(passed
, "index %i - data error on node %pOF rc=%i\n",
1146 static const struct of_device_id match_node_table
[] = {
1147 { .data
= "A", .name
= "name0", }, /* Name alone is lowest priority */
1148 { .data
= "B", .type
= "type1", }, /* followed by type alone */
1150 { .data
= "Ca", .name
= "name2", .type
= "type1", }, /* followed by both together */
1151 { .data
= "Cb", .name
= "name2", }, /* Only match when type doesn't match */
1152 { .data
= "Cc", .name
= "name2", .type
= "type2", },
1154 { .data
= "E", .compatible
= "compat3" },
1155 { .data
= "G", .compatible
= "compat2", },
1156 { .data
= "H", .compatible
= "compat2", .name
= "name5", },
1157 { .data
= "I", .compatible
= "compat2", .type
= "type1", },
1158 { .data
= "J", .compatible
= "compat2", .type
= "type1", .name
= "name8", },
1159 { .data
= "K", .compatible
= "compat2", .name
= "name9", },
1166 } match_node_tests
[] = {
1167 { .path
= "/testcase-data/match-node/name0", .data
= "A", },
1168 { .path
= "/testcase-data/match-node/name1", .data
= "B", },
1169 { .path
= "/testcase-data/match-node/a/name2", .data
= "Ca", },
1170 { .path
= "/testcase-data/match-node/b/name2", .data
= "Cb", },
1171 { .path
= "/testcase-data/match-node/c/name2", .data
= "Cc", },
1172 { .path
= "/testcase-data/match-node/name3", .data
= "E", },
1173 { .path
= "/testcase-data/match-node/name4", .data
= "G", },
1174 { .path
= "/testcase-data/match-node/name5", .data
= "H", },
1175 { .path
= "/testcase-data/match-node/name6", .data
= "G", },
1176 { .path
= "/testcase-data/match-node/name7", .data
= "I", },
1177 { .path
= "/testcase-data/match-node/name8", .data
= "J", },
1178 { .path
= "/testcase-data/match-node/name9", .data
= "K", },
1181 static void __init
of_unittest_match_node(void)
1183 struct device_node
*np
;
1184 const struct of_device_id
*match
;
1187 for (i
= 0; i
< ARRAY_SIZE(match_node_tests
); i
++) {
1188 np
= of_find_node_by_path(match_node_tests
[i
].path
);
1190 unittest(0, "missing testcase node %s\n",
1191 match_node_tests
[i
].path
);
1195 match
= of_match_node(match_node_table
, np
);
1197 unittest(0, "%s didn't match anything\n",
1198 match_node_tests
[i
].path
);
1202 if (strcmp(match
->data
, match_node_tests
[i
].data
) != 0) {
1203 unittest(0, "%s got wrong match. expected %s, got %s\n",
1204 match_node_tests
[i
].path
, match_node_tests
[i
].data
,
1205 (const char *)match
->data
);
1208 unittest(1, "passed");
1212 static struct resource test_bus_res
= DEFINE_RES_MEM(0xfffffff8, 2);
1213 static const struct platform_device_info test_bus_info
= {
1214 .name
= "unittest-bus",
1216 static void __init
of_unittest_platform_populate(void)
1219 struct device_node
*np
, *child
, *grandchild
;
1220 struct platform_device
*pdev
, *test_bus
;
1221 const struct of_device_id match
[] = {
1222 { .compatible
= "test-device", },
1226 np
= of_find_node_by_path("/testcase-data");
1227 of_platform_default_populate(np
, NULL
, NULL
);
1229 /* Test that a missing irq domain returns -EPROBE_DEFER */
1230 np
= of_find_node_by_path("/testcase-data/testcase-device1");
1231 pdev
= of_find_device_by_node(np
);
1232 unittest(pdev
, "device 1 creation failed\n");
1234 if (!(of_irq_workarounds
& OF_IMAP_OLDWORLD_MAC
)) {
1235 irq
= platform_get_irq(pdev
, 0);
1236 unittest(irq
== -EPROBE_DEFER
,
1237 "device deferred probe failed - %d\n", irq
);
1239 /* Test that a parsing failure does not return -EPROBE_DEFER */
1240 np
= of_find_node_by_path("/testcase-data/testcase-device2");
1241 pdev
= of_find_device_by_node(np
);
1242 unittest(pdev
, "device 2 creation failed\n");
1244 EXPECT_BEGIN(KERN_INFO
,
1245 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1247 irq
= platform_get_irq(pdev
, 0);
1249 EXPECT_END(KERN_INFO
,
1250 "platform testcase-data:testcase-device2: IRQ index 0 not found");
1252 unittest(irq
< 0 && irq
!= -EPROBE_DEFER
,
1253 "device parsing error failed - %d\n", irq
);
1256 np
= of_find_node_by_path("/testcase-data/platform-tests");
1257 unittest(np
, "No testcase data in device tree\n");
1261 test_bus
= platform_device_register_full(&test_bus_info
);
1262 rc
= PTR_ERR_OR_ZERO(test_bus
);
1263 unittest(!rc
, "testbus registration failed; rc=%i\n", rc
);
1268 test_bus
->dev
.of_node
= np
;
1271 * Add a dummy resource to the test bus node after it is
1272 * registered to catch problems with un-inserted resources. The
1273 * DT code doesn't insert the resources, and it has caused the
1274 * kernel to oops in the past. This makes sure the same bug
1275 * doesn't crop up again.
1277 platform_device_add_resources(test_bus
, &test_bus_res
, 1);
1279 of_platform_populate(np
, match
, NULL
, &test_bus
->dev
);
1280 for_each_child_of_node(np
, child
) {
1281 for_each_child_of_node(child
, grandchild
) {
1282 pdev
= of_find_device_by_node(grandchild
);
1284 "Could not create device for node '%pOFn'\n",
1286 platform_device_put(pdev
);
1290 of_platform_depopulate(&test_bus
->dev
);
1291 for_each_child_of_node(np
, child
) {
1292 for_each_child_of_node(child
, grandchild
)
1293 unittest(!of_find_device_by_node(grandchild
),
1294 "device didn't get destroyed '%pOFn'\n",
1298 platform_device_unregister(test_bus
);
1303 * update_node_properties - adds the properties
1304 * of np into dup node (present in live tree) and
1305 * updates parent of children of np to dup.
1307 * @np: node whose properties are being added to the live tree
1308 * @dup: node present in live tree to be updated
1310 static void update_node_properties(struct device_node
*np
,
1311 struct device_node
*dup
)
1313 struct property
*prop
;
1314 struct property
*save_next
;
1315 struct device_node
*child
;
1318 for_each_child_of_node(np
, child
)
1319 child
->parent
= dup
;
1322 * "unittest internal error: unable to add testdata property"
1324 * If this message reports a property in node '/__symbols__' then
1325 * the respective unittest overlay contains a label that has the
1326 * same name as a label in the live devicetree. The label will
1327 * be in the live devicetree only if the devicetree source was
1328 * compiled with the '-@' option. If you encounter this error,
1329 * please consider renaming __all__ of the labels in the unittest
1330 * overlay dts files with an odd prefix that is unlikely to be
1331 * used in a real devicetree.
1335 * open code for_each_property_of_node() because of_add_property()
1336 * sets prop->next to NULL
1338 for (prop
= np
->properties
; prop
!= NULL
; prop
= save_next
) {
1339 save_next
= prop
->next
;
1340 ret
= of_add_property(dup
, prop
);
1342 if (ret
== -EEXIST
&& !strcmp(prop
->name
, "name"))
1344 pr_err("unittest internal error: unable to add testdata property %pOF/%s",
1351 * attach_node_and_children - attaches nodes
1352 * and its children to live tree.
1353 * CAUTION: misleading function name - if node @np already exists in
1354 * the live tree then children of @np are *not* attached to the live
1355 * tree. This works for the current test devicetree nodes because such
1356 * nodes do not have child nodes.
1358 * @np: Node to attach to live tree
1360 static void attach_node_and_children(struct device_node
*np
)
1362 struct device_node
*next
, *dup
, *child
;
1363 unsigned long flags
;
1364 const char *full_name
;
1366 full_name
= kasprintf(GFP_KERNEL
, "%pOF", np
);
1368 if (!strcmp(full_name
, "/__local_fixups__") ||
1369 !strcmp(full_name
, "/__fixups__")) {
1374 dup
= of_find_node_by_path(full_name
);
1377 update_node_properties(np
, dup
);
1384 mutex_lock(&of_mutex
);
1385 raw_spin_lock_irqsave(&devtree_lock
, flags
);
1386 np
->sibling
= np
->parent
->child
;
1387 np
->parent
->child
= np
;
1388 of_node_clear_flag(np
, OF_DETACHED
);
1389 raw_spin_unlock_irqrestore(&devtree_lock
, flags
);
1391 __of_attach_node_sysfs(np
);
1392 mutex_unlock(&of_mutex
);
1395 next
= child
->sibling
;
1396 attach_node_and_children(child
);
1402 * unittest_data_add - Reads, copies data from
1403 * linked tree and attaches it to the live tree
1405 static int __init
unittest_data_add(void)
1407 void *unittest_data
;
1408 void *unittest_data_align
;
1409 struct device_node
*unittest_data_node
= NULL
, *np
;
1411 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically
1412 * created by cmd_dt_S_dtb in scripts/Makefile.lib
1414 extern uint8_t __dtb_testcases_begin
[];
1415 extern uint8_t __dtb_testcases_end
[];
1416 const int size
= __dtb_testcases_end
- __dtb_testcases_begin
;
1421 pr_warn("%s: testcases is empty\n", __func__
);
1426 unittest_data
= kmalloc(size
+ FDT_ALIGN_SIZE
, GFP_KERNEL
);
1430 unittest_data_align
= PTR_ALIGN(unittest_data
, FDT_ALIGN_SIZE
);
1431 memcpy(unittest_data_align
, __dtb_testcases_begin
, size
);
1433 ret
= of_fdt_unflatten_tree(unittest_data_align
, NULL
, &unittest_data_node
);
1435 pr_warn("%s: unflatten testcases tree failed\n", __func__
);
1436 kfree(unittest_data
);
1439 if (!unittest_data_node
) {
1440 pr_warn("%s: testcases tree is empty\n", __func__
);
1441 kfree(unittest_data
);
1446 * This lock normally encloses of_resolve_phandles()
1448 of_overlay_mutex_lock();
1450 rc
= of_resolve_phandles(unittest_data_node
);
1452 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__
, rc
);
1453 of_overlay_mutex_unlock();
1458 of_root
= unittest_data_node
;
1459 for_each_of_allnodes(np
)
1460 __of_attach_node_sysfs(np
);
1461 of_aliases
= of_find_node_by_path("/aliases");
1462 of_chosen
= of_find_node_by_path("/chosen");
1463 of_overlay_mutex_unlock();
1467 EXPECT_BEGIN(KERN_INFO
,
1468 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1470 /* attach the sub-tree to live tree */
1471 np
= unittest_data_node
->child
;
1473 struct device_node
*next
= np
->sibling
;
1475 np
->parent
= of_root
;
1476 attach_node_and_children(np
);
1480 EXPECT_END(KERN_INFO
,
1481 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");
1483 of_overlay_mutex_unlock();
1488 #ifdef CONFIG_OF_OVERLAY
1489 static int __init
overlay_data_apply(const char *overlay_name
, int *overlay_id
);
1491 static int unittest_probe(struct platform_device
*pdev
)
1493 struct device
*dev
= &pdev
->dev
;
1494 struct device_node
*np
= dev
->of_node
;
1497 dev_err(dev
, "No OF data for device\n");
1502 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
1504 of_platform_populate(np
, NULL
, NULL
, &pdev
->dev
);
1509 static int unittest_remove(struct platform_device
*pdev
)
1511 struct device
*dev
= &pdev
->dev
;
1512 struct device_node
*np
= dev
->of_node
;
1514 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
1518 static const struct of_device_id unittest_match
[] = {
1519 { .compatible
= "unittest", },
1523 static struct platform_driver unittest_driver
= {
1524 .probe
= unittest_probe
,
1525 .remove
= unittest_remove
,
1528 .of_match_table
= of_match_ptr(unittest_match
),
1532 /* get the platform device instantiated at the path */
1533 static struct platform_device
*of_path_to_platform_device(const char *path
)
1535 struct device_node
*np
;
1536 struct platform_device
*pdev
;
1538 np
= of_find_node_by_path(path
);
1542 pdev
= of_find_device_by_node(np
);
1548 /* find out if a platform device exists at that path */
1549 static int of_path_platform_device_exists(const char *path
)
1551 struct platform_device
*pdev
;
1553 pdev
= of_path_to_platform_device(path
);
1554 platform_device_put(pdev
);
1555 return pdev
!= NULL
;
1558 #ifdef CONFIG_OF_GPIO
1560 struct unittest_gpio_dev
{
1561 struct gpio_chip chip
;
1564 static int unittest_gpio_chip_request_count
;
1565 static int unittest_gpio_probe_count
;
1566 static int unittest_gpio_probe_pass_count
;
1568 static int unittest_gpio_chip_request(struct gpio_chip
*chip
, unsigned int offset
)
1570 unittest_gpio_chip_request_count
++;
1572 pr_debug("%s(): %s %d %d\n", __func__
, chip
->label
, offset
,
1573 unittest_gpio_chip_request_count
);
1577 static int unittest_gpio_probe(struct platform_device
*pdev
)
1579 struct unittest_gpio_dev
*devptr
;
1582 unittest_gpio_probe_count
++;
1584 devptr
= kzalloc(sizeof(*devptr
), GFP_KERNEL
);
1588 platform_set_drvdata(pdev
, devptr
);
1590 devptr
->chip
.of_node
= pdev
->dev
.of_node
;
1591 devptr
->chip
.label
= "of-unittest-gpio";
1592 devptr
->chip
.base
= -1; /* dynamic allocation */
1593 devptr
->chip
.ngpio
= 5;
1594 devptr
->chip
.request
= unittest_gpio_chip_request
;
1596 ret
= gpiochip_add_data(&devptr
->chip
, NULL
);
1599 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr
->chip
.of_node
, ret
);
1602 unittest_gpio_probe_pass_count
++;
1606 static int unittest_gpio_remove(struct platform_device
*pdev
)
1608 struct unittest_gpio_dev
*gdev
= platform_get_drvdata(pdev
);
1609 struct device
*dev
= &pdev
->dev
;
1610 struct device_node
*np
= pdev
->dev
.of_node
;
1612 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
1617 if (gdev
->chip
.base
!= -1)
1618 gpiochip_remove(&gdev
->chip
);
1620 platform_set_drvdata(pdev
, NULL
);
1626 static const struct of_device_id unittest_gpio_id
[] = {
1627 { .compatible
= "unittest-gpio", },
1631 static struct platform_driver unittest_gpio_driver
= {
1632 .probe
= unittest_gpio_probe
,
1633 .remove
= unittest_gpio_remove
,
1635 .name
= "unittest-gpio",
1636 .of_match_table
= of_match_ptr(unittest_gpio_id
),
1640 static void __init
of_unittest_overlay_gpio(void)
1642 int chip_request_count
;
1643 int probe_pass_count
;
1647 * tests: apply overlays before registering driver
1648 * Similar to installing a driver as a module, the
1649 * driver is registered after applying the overlays.
1651 * The overlays are applied by overlay_data_apply()
1652 * instead of of_unittest_apply_overlay() so that they
1653 * will not be tracked. Thus they will not be removed
1654 * by of_unittest_destroy_tracked_overlays().
1656 * - apply overlay_gpio_01
1657 * - apply overlay_gpio_02a
1658 * - apply overlay_gpio_02b
1661 * register driver will result in
1662 * - probe and processing gpio hog for overlay_gpio_01
1663 * - probe for overlay_gpio_02a
1664 * - processing gpio for overlay_gpio_02b
1667 probe_pass_count
= unittest_gpio_probe_pass_count
;
1668 chip_request_count
= unittest_gpio_chip_request_count
;
1671 * overlay_gpio_01 contains gpio node and child gpio hog node
1672 * overlay_gpio_02a contains gpio node
1673 * overlay_gpio_02b contains child gpio hog node
1676 unittest(overlay_data_apply("overlay_gpio_01", NULL
),
1677 "Adding overlay 'overlay_gpio_01' failed\n");
1679 unittest(overlay_data_apply("overlay_gpio_02a", NULL
),
1680 "Adding overlay 'overlay_gpio_02a' failed\n");
1682 unittest(overlay_data_apply("overlay_gpio_02b", NULL
),
1683 "Adding overlay 'overlay_gpio_02b' failed\n");
1686 * messages are the result of the probes, after the
1687 * driver is registered
1690 EXPECT_BEGIN(KERN_INFO
,
1691 "GPIO line <<int>> (line-B-input) hogged as input\n");
1693 EXPECT_BEGIN(KERN_INFO
,
1694 "GPIO line <<int>> (line-A-input) hogged as input\n");
1696 ret
= platform_driver_register(&unittest_gpio_driver
);
1697 if (unittest(ret
== 0, "could not register unittest gpio driver\n"))
1700 EXPECT_END(KERN_INFO
,
1701 "GPIO line <<int>> (line-A-input) hogged as input\n");
1702 EXPECT_END(KERN_INFO
,
1703 "GPIO line <<int>> (line-B-input) hogged as input\n");
1705 unittest(probe_pass_count
+ 2 == unittest_gpio_probe_pass_count
,
1706 "unittest_gpio_probe() failed or not called\n");
1708 unittest(chip_request_count
+ 2 == unittest_gpio_chip_request_count
,
1709 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1710 unittest_gpio_chip_request_count
- chip_request_count
);
1713 * tests: apply overlays after registering driver
1715 * Similar to a driver built-in to the kernel, the
1716 * driver is registered before applying the overlays.
1718 * overlay_gpio_03 contains gpio node and child gpio hog node
1720 * - apply overlay_gpio_03
1722 * apply overlay will result in
1723 * - probe and processing gpio hog.
1726 probe_pass_count
= unittest_gpio_probe_pass_count
;
1727 chip_request_count
= unittest_gpio_chip_request_count
;
1729 EXPECT_BEGIN(KERN_INFO
,
1730 "GPIO line <<int>> (line-D-input) hogged as input\n");
1732 /* overlay_gpio_03 contains gpio node and child gpio hog node */
1734 unittest(overlay_data_apply("overlay_gpio_03", NULL
),
1735 "Adding overlay 'overlay_gpio_03' failed\n");
1737 EXPECT_END(KERN_INFO
,
1738 "GPIO line <<int>> (line-D-input) hogged as input\n");
1740 unittest(probe_pass_count
+ 1 == unittest_gpio_probe_pass_count
,
1741 "unittest_gpio_probe() failed or not called\n");
1743 unittest(chip_request_count
+ 1 == unittest_gpio_chip_request_count
,
1744 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1745 unittest_gpio_chip_request_count
- chip_request_count
);
1748 * overlay_gpio_04a contains gpio node
1750 * - apply overlay_gpio_04a
1752 * apply the overlay will result in
1753 * - probe for overlay_gpio_04a
1756 probe_pass_count
= unittest_gpio_probe_pass_count
;
1757 chip_request_count
= unittest_gpio_chip_request_count
;
1759 /* overlay_gpio_04a contains gpio node */
1761 unittest(overlay_data_apply("overlay_gpio_04a", NULL
),
1762 "Adding overlay 'overlay_gpio_04a' failed\n");
1764 unittest(probe_pass_count
+ 1 == unittest_gpio_probe_pass_count
,
1765 "unittest_gpio_probe() failed or not called\n");
1768 * overlay_gpio_04b contains child gpio hog node
1770 * - apply overlay_gpio_04b
1772 * apply the overlay will result in
1773 * - processing gpio for overlay_gpio_04b
1776 EXPECT_BEGIN(KERN_INFO
,
1777 "GPIO line <<int>> (line-C-input) hogged as input\n");
1779 /* overlay_gpio_04b contains child gpio hog node */
1781 unittest(overlay_data_apply("overlay_gpio_04b", NULL
),
1782 "Adding overlay 'overlay_gpio_04b' failed\n");
1784 EXPECT_END(KERN_INFO
,
1785 "GPIO line <<int>> (line-C-input) hogged as input\n");
1787 unittest(chip_request_count
+ 1 == unittest_gpio_chip_request_count
,
1788 "unittest_gpio_chip_request() called %d times (expected 1 time)\n",
1789 unittest_gpio_chip_request_count
- chip_request_count
);
1794 static void __init
of_unittest_overlay_gpio(void)
1801 #if IS_BUILTIN(CONFIG_I2C)
1803 /* get the i2c client device instantiated at the path */
1804 static struct i2c_client
*of_path_to_i2c_client(const char *path
)
1806 struct device_node
*np
;
1807 struct i2c_client
*client
;
1809 np
= of_find_node_by_path(path
);
1813 client
= of_find_i2c_device_by_node(np
);
1819 /* find out if a i2c client device exists at that path */
1820 static int of_path_i2c_client_exists(const char *path
)
1822 struct i2c_client
*client
;
1824 client
= of_path_to_i2c_client(path
);
1826 put_device(&client
->dev
);
1827 return client
!= NULL
;
1830 static int of_path_i2c_client_exists(const char *path
)
1841 static int of_path_device_type_exists(const char *path
,
1842 enum overlay_type ovtype
)
1846 return of_path_platform_device_exists(path
);
1848 return of_path_i2c_client_exists(path
);
1853 static const char *unittest_path(int nr
, enum overlay_type ovtype
)
1856 static char buf
[256];
1860 base
= "/testcase-data/overlay-node/test-bus";
1863 base
= "/testcase-data/overlay-node/test-bus/i2c-test-bus";
1869 snprintf(buf
, sizeof(buf
) - 1, "%s/test-unittest%d", base
, nr
);
1870 buf
[sizeof(buf
) - 1] = '\0';
1874 static int of_unittest_device_exists(int unittest_nr
, enum overlay_type ovtype
)
1878 path
= unittest_path(unittest_nr
, ovtype
);
1882 return of_path_platform_device_exists(path
);
1884 return of_path_i2c_client_exists(path
);
1889 static const char *overlay_name_from_nr(int nr
)
1891 static char buf
[256];
1893 snprintf(buf
, sizeof(buf
) - 1,
1895 buf
[sizeof(buf
) - 1] = '\0';
1900 static const char *bus_path
= "/testcase-data/overlay-node/test-bus";
1902 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */
1904 #define MAX_UNITTEST_OVERLAYS 256
1905 static unsigned long overlay_id_bits
[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS
)];
1906 static int overlay_first_id
= -1;
1908 static long of_unittest_overlay_tracked(int id
)
1910 if (WARN_ON(id
>= MAX_UNITTEST_OVERLAYS
))
1912 return overlay_id_bits
[BIT_WORD(id
)] & BIT_MASK(id
);
1915 static void of_unittest_track_overlay(int id
)
1917 if (overlay_first_id
< 0)
1918 overlay_first_id
= id
;
1919 id
-= overlay_first_id
;
1921 if (WARN_ON(id
>= MAX_UNITTEST_OVERLAYS
))
1923 overlay_id_bits
[BIT_WORD(id
)] |= BIT_MASK(id
);
1926 static void of_unittest_untrack_overlay(int id
)
1928 if (overlay_first_id
< 0)
1930 id
-= overlay_first_id
;
1931 if (WARN_ON(id
>= MAX_UNITTEST_OVERLAYS
))
1933 overlay_id_bits
[BIT_WORD(id
)] &= ~BIT_MASK(id
);
1936 static void of_unittest_destroy_tracked_overlays(void)
1938 int id
, ret
, defers
, ovcs_id
;
1940 if (overlay_first_id
< 0)
1943 /* try until no defers */
1946 /* remove in reverse order */
1947 for (id
= MAX_UNITTEST_OVERLAYS
- 1; id
>= 0; id
--) {
1948 if (!of_unittest_overlay_tracked(id
))
1951 ovcs_id
= id
+ overlay_first_id
;
1952 ret
= of_overlay_remove(&ovcs_id
);
1953 if (ret
== -ENODEV
) {
1954 pr_warn("%s: no overlay to destroy for #%d\n",
1955 __func__
, id
+ overlay_first_id
);
1960 pr_warn("%s: overlay destroy failed for #%d\n",
1961 __func__
, id
+ overlay_first_id
);
1965 of_unittest_untrack_overlay(id
);
1967 } while (defers
> 0);
1970 static int __init
of_unittest_apply_overlay(int overlay_nr
, int *overlay_id
)
1972 const char *overlay_name
;
1974 overlay_name
= overlay_name_from_nr(overlay_nr
);
1976 if (!overlay_data_apply(overlay_name
, overlay_id
)) {
1977 unittest(0, "could not apply overlay \"%s\"\n",
1981 of_unittest_track_overlay(*overlay_id
);
1986 /* apply an overlay while checking before and after states */
1987 static int __init
of_unittest_apply_overlay_check(int overlay_nr
,
1988 int unittest_nr
, int before
, int after
,
1989 enum overlay_type ovtype
)
1993 /* unittest device must not be in before state */
1994 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
1995 unittest(0, "%s with device @\"%s\" %s\n",
1996 overlay_name_from_nr(overlay_nr
),
1997 unittest_path(unittest_nr
, ovtype
),
1998 !before
? "enabled" : "disabled");
2003 ret
= of_unittest_apply_overlay(overlay_nr
, &ovcs_id
);
2005 /* of_unittest_apply_overlay already called unittest() */
2009 /* unittest device must be to set to after state */
2010 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
2011 unittest(0, "%s failed to create @\"%s\" %s\n",
2012 overlay_name_from_nr(overlay_nr
),
2013 unittest_path(unittest_nr
, ovtype
),
2014 !after
? "enabled" : "disabled");
2021 /* apply an overlay and then revert it while checking before, after states */
2022 static int __init
of_unittest_apply_revert_overlay_check(int overlay_nr
,
2023 int unittest_nr
, int before
, int after
,
2024 enum overlay_type ovtype
)
2026 int ret
, ovcs_id
, save_id
;
2028 /* unittest device must be in before state */
2029 if (of_unittest_device_exists(unittest_nr
, ovtype
) != before
) {
2030 unittest(0, "%s with device @\"%s\" %s\n",
2031 overlay_name_from_nr(overlay_nr
),
2032 unittest_path(unittest_nr
, ovtype
),
2033 !before
? "enabled" : "disabled");
2037 /* apply the overlay */
2039 ret
= of_unittest_apply_overlay(overlay_nr
, &ovcs_id
);
2041 /* of_unittest_apply_overlay already called unittest() */
2045 /* unittest device must be in after state */
2046 if (of_unittest_device_exists(unittest_nr
, ovtype
) != after
) {
2047 unittest(0, "%s failed to create @\"%s\" %s\n",
2048 overlay_name_from_nr(overlay_nr
),
2049 unittest_path(unittest_nr
, ovtype
),
2050 !after
? "enabled" : "disabled");
2055 ret
= of_overlay_remove(&ovcs_id
);
2057 unittest(0, "%s failed to be destroyed @\"%s\"\n",
2058 overlay_name_from_nr(overlay_nr
),
2059 unittest_path(unittest_nr
, ovtype
));
2062 of_unittest_untrack_overlay(save_id
);
2064 /* unittest device must be again in before state */
2065 if (of_unittest_device_exists(unittest_nr
, PDEV_OVERLAY
) != before
) {
2066 unittest(0, "%s with device @\"%s\" %s\n",
2067 overlay_name_from_nr(overlay_nr
),
2068 unittest_path(unittest_nr
, ovtype
),
2069 !before
? "enabled" : "disabled");
2076 /* test activation of device */
2077 static void __init
of_unittest_overlay_0(void)
2081 EXPECT_BEGIN(KERN_INFO
,
2082 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2084 /* device should enable */
2085 ret
= of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY
);
2087 EXPECT_END(KERN_INFO
,
2088 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status");
2093 unittest(1, "overlay test %d passed\n", 0);
2096 /* test deactivation of device */
2097 static void __init
of_unittest_overlay_1(void)
2101 EXPECT_BEGIN(KERN_INFO
,
2102 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2104 /* device should disable */
2105 ret
= of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY
);
2107 EXPECT_END(KERN_INFO
,
2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status");
2113 unittest(1, "overlay test %d passed\n", 1);
2117 /* test activation of device */
2118 static void __init
of_unittest_overlay_2(void)
2122 EXPECT_BEGIN(KERN_INFO
,
2123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2125 /* device should enable */
2126 ret
= of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY
);
2128 EXPECT_END(KERN_INFO
,
2129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status");
2133 unittest(1, "overlay test %d passed\n", 2);
2136 /* test deactivation of device */
2137 static void __init
of_unittest_overlay_3(void)
2141 EXPECT_BEGIN(KERN_INFO
,
2142 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2144 /* device should disable */
2145 ret
= of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY
);
2147 EXPECT_END(KERN_INFO
,
2148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status");
2153 unittest(1, "overlay test %d passed\n", 3);
2156 /* test activation of a full device node */
2157 static void __init
of_unittest_overlay_4(void)
2159 /* device should disable */
2160 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY
))
2163 unittest(1, "overlay test %d passed\n", 4);
2166 /* test overlay apply/revert sequence */
2167 static void __init
of_unittest_overlay_5(void)
2171 EXPECT_BEGIN(KERN_INFO
,
2172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2174 /* device should disable */
2175 ret
= of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY
);
2177 EXPECT_END(KERN_INFO
,
2178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status");
2183 unittest(1, "overlay test %d passed\n", 5);
2186 /* test overlay application in sequence */
2187 static void __init
of_unittest_overlay_6(void)
2189 int i
, ov_id
[2], ovcs_id
;
2190 int overlay_nr
= 6, unittest_nr
= 6;
2191 int before
= 0, after
= 1;
2192 const char *overlay_name
;
2196 /* unittest device must be in before state */
2197 for (i
= 0; i
< 2; i
++) {
2198 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
2200 unittest(0, "%s with device @\"%s\" %s\n",
2201 overlay_name_from_nr(overlay_nr
+ i
),
2202 unittest_path(unittest_nr
+ i
,
2204 !before
? "enabled" : "disabled");
2209 /* apply the overlays */
2211 EXPECT_BEGIN(KERN_INFO
,
2212 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2214 overlay_name
= overlay_name_from_nr(overlay_nr
+ 0);
2216 ret
= overlay_data_apply(overlay_name
, &ovcs_id
);
2219 unittest(0, "could not apply overlay \"%s\"\n", overlay_name
);
2223 of_unittest_track_overlay(ov_id
[0]);
2225 EXPECT_END(KERN_INFO
,
2226 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status");
2228 EXPECT_BEGIN(KERN_INFO
,
2229 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2231 overlay_name
= overlay_name_from_nr(overlay_nr
+ 1);
2233 ret
= overlay_data_apply(overlay_name
, &ovcs_id
);
2236 unittest(0, "could not apply overlay \"%s\"\n", overlay_name
);
2240 of_unittest_track_overlay(ov_id
[1]);
2242 EXPECT_END(KERN_INFO
,
2243 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status");
2246 for (i
= 0; i
< 2; i
++) {
2247 /* unittest device must be in after state */
2248 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
2250 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
2251 overlay_name_from_nr(overlay_nr
+ i
),
2252 unittest_path(unittest_nr
+ i
,
2254 !after
? "enabled" : "disabled");
2259 for (i
= 1; i
>= 0; i
--) {
2261 if (of_overlay_remove(&ovcs_id
)) {
2262 unittest(0, "%s failed destroy @\"%s\"\n",
2263 overlay_name_from_nr(overlay_nr
+ i
),
2264 unittest_path(unittest_nr
+ i
,
2268 of_unittest_untrack_overlay(ov_id
[i
]);
2271 for (i
= 0; i
< 2; i
++) {
2272 /* unittest device must be again in before state */
2273 if (of_unittest_device_exists(unittest_nr
+ i
, PDEV_OVERLAY
)
2275 unittest(0, "%s with device @\"%s\" %s\n",
2276 overlay_name_from_nr(overlay_nr
+ i
),
2277 unittest_path(unittest_nr
+ i
,
2279 !before
? "enabled" : "disabled");
2284 unittest(1, "overlay test %d passed\n", 6);
2288 /* test overlay application in sequence */
2289 static void __init
of_unittest_overlay_8(void)
2291 int i
, ov_id
[2], ovcs_id
;
2292 int overlay_nr
= 8, unittest_nr
= 8;
2293 const char *overlay_name
;
2296 /* we don't care about device state in this test */
2298 EXPECT_BEGIN(KERN_INFO
,
2299 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2301 overlay_name
= overlay_name_from_nr(overlay_nr
+ 0);
2303 ret
= overlay_data_apply(overlay_name
, &ovcs_id
);
2305 unittest(0, "could not apply overlay \"%s\"\n", overlay_name
);
2307 EXPECT_END(KERN_INFO
,
2308 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status");
2314 of_unittest_track_overlay(ov_id
[0]);
2316 overlay_name
= overlay_name_from_nr(overlay_nr
+ 1);
2318 EXPECT_BEGIN(KERN_INFO
,
2319 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2321 /* apply the overlays */
2322 ret
= overlay_data_apply(overlay_name
, &ovcs_id
);
2324 EXPECT_END(KERN_INFO
,
2325 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo");
2328 unittest(0, "could not apply overlay \"%s\"\n", overlay_name
);
2333 of_unittest_track_overlay(ov_id
[1]);
2335 /* now try to remove first overlay (it should fail) */
2338 EXPECT_BEGIN(KERN_INFO
,
2339 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2341 EXPECT_BEGIN(KERN_INFO
,
2342 "OF: overlay: overlay #6 is not topmost");
2344 ret
= of_overlay_remove(&ovcs_id
);
2346 EXPECT_END(KERN_INFO
,
2347 "OF: overlay: overlay #6 is not topmost");
2349 EXPECT_END(KERN_INFO
,
2350 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8");
2353 unittest(0, "%s was destroyed @\"%s\"\n",
2354 overlay_name_from_nr(overlay_nr
+ 0),
2355 unittest_path(unittest_nr
,
2360 /* removing them in order should work */
2361 for (i
= 1; i
>= 0; i
--) {
2363 if (of_overlay_remove(&ovcs_id
)) {
2364 unittest(0, "%s not destroyed @\"%s\"\n",
2365 overlay_name_from_nr(overlay_nr
+ i
),
2366 unittest_path(unittest_nr
,
2370 of_unittest_untrack_overlay(ov_id
[i
]);
2373 unittest(1, "overlay test %d passed\n", 8);
2376 /* test insertion of a bus with parent devices */
2377 static void __init
of_unittest_overlay_10(void)
2382 /* device should disable */
2383 ret
= of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY
);
2385 if (unittest(ret
== 0,
2386 "overlay test %d failed; overlay application\n", 10))
2389 child_path
= kasprintf(GFP_KERNEL
, "%s/test-unittest101",
2390 unittest_path(10, PDEV_OVERLAY
));
2391 if (unittest(child_path
, "overlay test %d failed; kasprintf\n", 10))
2394 ret
= of_path_device_type_exists(child_path
, PDEV_OVERLAY
);
2397 unittest(ret
, "overlay test %d failed; no child device\n", 10);
2400 /* test insertion of a bus with parent devices (and revert) */
2401 static void __init
of_unittest_overlay_11(void)
2405 /* device should disable */
2406 ret
= of_unittest_apply_revert_overlay_check(11, 11, 0, 1,
2409 unittest(ret
== 0, "overlay test %d failed; overlay apply\n", 11);
2412 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
2414 struct unittest_i2c_bus_data
{
2415 struct platform_device
*pdev
;
2416 struct i2c_adapter adap
;
2419 static int unittest_i2c_master_xfer(struct i2c_adapter
*adap
,
2420 struct i2c_msg
*msgs
, int num
)
2422 struct unittest_i2c_bus_data
*std
= i2c_get_adapdata(adap
);
2429 static u32
unittest_i2c_functionality(struct i2c_adapter
*adap
)
2431 return I2C_FUNC_I2C
| I2C_FUNC_SMBUS_EMUL
;
2434 static const struct i2c_algorithm unittest_i2c_algo
= {
2435 .master_xfer
= unittest_i2c_master_xfer
,
2436 .functionality
= unittest_i2c_functionality
,
2439 static int unittest_i2c_bus_probe(struct platform_device
*pdev
)
2441 struct device
*dev
= &pdev
->dev
;
2442 struct device_node
*np
= dev
->of_node
;
2443 struct unittest_i2c_bus_data
*std
;
2444 struct i2c_adapter
*adap
;
2448 dev_err(dev
, "No OF data for device\n");
2453 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2455 std
= devm_kzalloc(dev
, sizeof(*std
), GFP_KERNEL
);
2459 /* link them together */
2461 platform_set_drvdata(pdev
, std
);
2464 i2c_set_adapdata(adap
, std
);
2466 strlcpy(adap
->name
, pdev
->name
, sizeof(adap
->name
));
2467 adap
->class = I2C_CLASS_DEPRECATED
;
2468 adap
->algo
= &unittest_i2c_algo
;
2469 adap
->dev
.parent
= dev
;
2470 adap
->dev
.of_node
= dev
->of_node
;
2471 adap
->timeout
= 5 * HZ
;
2474 ret
= i2c_add_numbered_adapter(adap
);
2476 dev_err(dev
, "Failed to add I2C adapter\n");
2483 static int unittest_i2c_bus_remove(struct platform_device
*pdev
)
2485 struct device
*dev
= &pdev
->dev
;
2486 struct device_node
*np
= dev
->of_node
;
2487 struct unittest_i2c_bus_data
*std
= platform_get_drvdata(pdev
);
2489 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2490 i2c_del_adapter(&std
->adap
);
2495 static const struct of_device_id unittest_i2c_bus_match
[] = {
2496 { .compatible
= "unittest-i2c-bus", },
2500 static struct platform_driver unittest_i2c_bus_driver
= {
2501 .probe
= unittest_i2c_bus_probe
,
2502 .remove
= unittest_i2c_bus_remove
,
2504 .name
= "unittest-i2c-bus",
2505 .of_match_table
= of_match_ptr(unittest_i2c_bus_match
),
2509 static int unittest_i2c_dev_probe(struct i2c_client
*client
,
2510 const struct i2c_device_id
*id
)
2512 struct device
*dev
= &client
->dev
;
2513 struct device_node
*np
= client
->dev
.of_node
;
2516 dev_err(dev
, "No OF node\n");
2520 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2525 static int unittest_i2c_dev_remove(struct i2c_client
*client
)
2527 struct device
*dev
= &client
->dev
;
2528 struct device_node
*np
= client
->dev
.of_node
;
2530 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2534 static const struct i2c_device_id unittest_i2c_dev_id
[] = {
2535 { .name
= "unittest-i2c-dev" },
2539 static struct i2c_driver unittest_i2c_dev_driver
= {
2541 .name
= "unittest-i2c-dev",
2543 .probe
= unittest_i2c_dev_probe
,
2544 .remove
= unittest_i2c_dev_remove
,
2545 .id_table
= unittest_i2c_dev_id
,
2548 #if IS_BUILTIN(CONFIG_I2C_MUX)
2550 static int unittest_i2c_mux_select_chan(struct i2c_mux_core
*muxc
, u32 chan
)
2555 static int unittest_i2c_mux_probe(struct i2c_client
*client
,
2556 const struct i2c_device_id
*id
)
2559 struct device
*dev
= &client
->dev
;
2560 struct i2c_adapter
*adap
= client
->adapter
;
2561 struct device_node
*np
= client
->dev
.of_node
, *child
;
2562 struct i2c_mux_core
*muxc
;
2565 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2568 dev_err(dev
, "No OF node\n");
2573 for_each_child_of_node(np
, child
) {
2574 if (of_property_read_u32(child
, "reg", ®
))
2576 if (max_reg
== (u32
)-1 || reg
> max_reg
)
2579 nchans
= max_reg
== (u32
)-1 ? 0 : max_reg
+ 1;
2581 dev_err(dev
, "No channels\n");
2585 muxc
= i2c_mux_alloc(adap
, dev
, nchans
, 0, 0,
2586 unittest_i2c_mux_select_chan
, NULL
);
2589 for (i
= 0; i
< nchans
; i
++) {
2590 if (i2c_mux_add_adapter(muxc
, 0, i
, 0)) {
2591 dev_err(dev
, "Failed to register mux #%d\n", i
);
2592 i2c_mux_del_adapters(muxc
);
2597 i2c_set_clientdata(client
, muxc
);
2602 static int unittest_i2c_mux_remove(struct i2c_client
*client
)
2604 struct device
*dev
= &client
->dev
;
2605 struct device_node
*np
= client
->dev
.of_node
;
2606 struct i2c_mux_core
*muxc
= i2c_get_clientdata(client
);
2608 dev_dbg(dev
, "%s for node @%pOF\n", __func__
, np
);
2609 i2c_mux_del_adapters(muxc
);
2613 static const struct i2c_device_id unittest_i2c_mux_id
[] = {
2614 { .name
= "unittest-i2c-mux" },
2618 static struct i2c_driver unittest_i2c_mux_driver
= {
2620 .name
= "unittest-i2c-mux",
2622 .probe
= unittest_i2c_mux_probe
,
2623 .remove
= unittest_i2c_mux_remove
,
2624 .id_table
= unittest_i2c_mux_id
,
2629 static int of_unittest_overlay_i2c_init(void)
2633 ret
= i2c_add_driver(&unittest_i2c_dev_driver
);
2634 if (unittest(ret
== 0,
2635 "could not register unittest i2c device driver\n"))
2638 ret
= platform_driver_register(&unittest_i2c_bus_driver
);
2640 if (unittest(ret
== 0,
2641 "could not register unittest i2c bus driver\n"))
2644 #if IS_BUILTIN(CONFIG_I2C_MUX)
2646 EXPECT_BEGIN(KERN_INFO
,
2647 "i2c i2c-1: Added multiplexed i2c bus 2");
2649 ret
= i2c_add_driver(&unittest_i2c_mux_driver
);
2651 EXPECT_END(KERN_INFO
,
2652 "i2c i2c-1: Added multiplexed i2c bus 2");
2654 if (unittest(ret
== 0,
2655 "could not register unittest i2c mux driver\n"))
2662 static void of_unittest_overlay_i2c_cleanup(void)
2664 #if IS_BUILTIN(CONFIG_I2C_MUX)
2665 i2c_del_driver(&unittest_i2c_mux_driver
);
2667 platform_driver_unregister(&unittest_i2c_bus_driver
);
2668 i2c_del_driver(&unittest_i2c_dev_driver
);
2671 static void __init
of_unittest_overlay_i2c_12(void)
2675 /* device should enable */
2676 EXPECT_BEGIN(KERN_INFO
,
2677 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2679 ret
= of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY
);
2681 EXPECT_END(KERN_INFO
,
2682 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status");
2687 unittest(1, "overlay test %d passed\n", 12);
2690 /* test deactivation of device */
2691 static void __init
of_unittest_overlay_i2c_13(void)
2695 EXPECT_BEGIN(KERN_INFO
,
2696 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2698 /* device should disable */
2699 ret
= of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY
);
2701 EXPECT_END(KERN_INFO
,
2702 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status");
2707 unittest(1, "overlay test %d passed\n", 13);
2710 /* just check for i2c mux existence */
2711 static void of_unittest_overlay_i2c_14(void)
2715 static void __init
of_unittest_overlay_i2c_15(void)
2719 /* device should enable */
2720 EXPECT_BEGIN(KERN_INFO
,
2721 "i2c i2c-1: Added multiplexed i2c bus 3");
2723 ret
= of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY
);
2725 EXPECT_END(KERN_INFO
,
2726 "i2c i2c-1: Added multiplexed i2c bus 3");
2731 unittest(1, "overlay test %d passed\n", 15);
2736 static inline void of_unittest_overlay_i2c_14(void) { }
2737 static inline void of_unittest_overlay_i2c_15(void) { }
2741 static void __init
of_unittest_overlay(void)
2743 struct device_node
*bus_np
= NULL
;
2745 if (platform_driver_register(&unittest_driver
)) {
2746 unittest(0, "could not register unittest driver\n");
2750 bus_np
= of_find_node_by_path(bus_path
);
2751 if (bus_np
== NULL
) {
2752 unittest(0, "could not find bus_path \"%s\"\n", bus_path
);
2756 if (of_platform_default_populate(bus_np
, NULL
, NULL
)) {
2757 unittest(0, "could not populate bus @ \"%s\"\n", bus_path
);
2761 if (!of_unittest_device_exists(100, PDEV_OVERLAY
)) {
2762 unittest(0, "could not find unittest0 @ \"%s\"\n",
2763 unittest_path(100, PDEV_OVERLAY
));
2767 if (of_unittest_device_exists(101, PDEV_OVERLAY
)) {
2768 unittest(0, "unittest1 @ \"%s\" should not exist\n",
2769 unittest_path(101, PDEV_OVERLAY
));
2773 unittest(1, "basic infrastructure of overlays passed");
2775 /* tests in sequence */
2776 of_unittest_overlay_0();
2777 of_unittest_overlay_1();
2778 of_unittest_overlay_2();
2779 of_unittest_overlay_3();
2780 of_unittest_overlay_4();
2781 of_unittest_overlay_5();
2782 of_unittest_overlay_6();
2783 of_unittest_overlay_8();
2785 of_unittest_overlay_10();
2786 of_unittest_overlay_11();
2788 #if IS_BUILTIN(CONFIG_I2C)
2789 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n"))
2792 of_unittest_overlay_i2c_12();
2793 of_unittest_overlay_i2c_13();
2794 of_unittest_overlay_i2c_14();
2795 of_unittest_overlay_i2c_15();
2797 of_unittest_overlay_i2c_cleanup();
2800 of_unittest_overlay_gpio();
2802 of_unittest_destroy_tracked_overlays();
2805 of_node_put(bus_np
);
2809 static inline void __init
of_unittest_overlay(void) { }
2812 #ifdef CONFIG_OF_OVERLAY
2815 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb
2816 * in scripts/Makefile.lib
2819 #define OVERLAY_INFO_EXTERN(name) \
2820 extern uint8_t __dtb_##name##_begin[]; \
2821 extern uint8_t __dtb_##name##_end[]
2823 #define OVERLAY_INFO(overlay_name, expected) \
2824 { .dtb_begin = __dtb_##overlay_name##_begin, \
2825 .dtb_end = __dtb_##overlay_name##_end, \
2826 .expected_result = expected, \
2827 .name = #overlay_name, \
2830 struct overlay_info
{
2833 int expected_result
;
2838 OVERLAY_INFO_EXTERN(overlay_base
);
2839 OVERLAY_INFO_EXTERN(overlay
);
2840 OVERLAY_INFO_EXTERN(overlay_0
);
2841 OVERLAY_INFO_EXTERN(overlay_1
);
2842 OVERLAY_INFO_EXTERN(overlay_2
);
2843 OVERLAY_INFO_EXTERN(overlay_3
);
2844 OVERLAY_INFO_EXTERN(overlay_4
);
2845 OVERLAY_INFO_EXTERN(overlay_5
);
2846 OVERLAY_INFO_EXTERN(overlay_6
);
2847 OVERLAY_INFO_EXTERN(overlay_7
);
2848 OVERLAY_INFO_EXTERN(overlay_8
);
2849 OVERLAY_INFO_EXTERN(overlay_9
);
2850 OVERLAY_INFO_EXTERN(overlay_10
);
2851 OVERLAY_INFO_EXTERN(overlay_11
);
2852 OVERLAY_INFO_EXTERN(overlay_12
);
2853 OVERLAY_INFO_EXTERN(overlay_13
);
2854 OVERLAY_INFO_EXTERN(overlay_15
);
2855 OVERLAY_INFO_EXTERN(overlay_gpio_01
);
2856 OVERLAY_INFO_EXTERN(overlay_gpio_02a
);
2857 OVERLAY_INFO_EXTERN(overlay_gpio_02b
);
2858 OVERLAY_INFO_EXTERN(overlay_gpio_03
);
2859 OVERLAY_INFO_EXTERN(overlay_gpio_04a
);
2860 OVERLAY_INFO_EXTERN(overlay_gpio_04b
);
2861 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node
);
2862 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop
);
2863 OVERLAY_INFO_EXTERN(overlay_bad_phandle
);
2864 OVERLAY_INFO_EXTERN(overlay_bad_symbol
);
2866 /* entries found by name */
2867 static struct overlay_info overlays
[] = {
2868 OVERLAY_INFO(overlay_base
, -9999),
2869 OVERLAY_INFO(overlay
, 0),
2870 OVERLAY_INFO(overlay_0
, 0),
2871 OVERLAY_INFO(overlay_1
, 0),
2872 OVERLAY_INFO(overlay_2
, 0),
2873 OVERLAY_INFO(overlay_3
, 0),
2874 OVERLAY_INFO(overlay_4
, 0),
2875 OVERLAY_INFO(overlay_5
, 0),
2876 OVERLAY_INFO(overlay_6
, 0),
2877 OVERLAY_INFO(overlay_7
, 0),
2878 OVERLAY_INFO(overlay_8
, 0),
2879 OVERLAY_INFO(overlay_9
, 0),
2880 OVERLAY_INFO(overlay_10
, 0),
2881 OVERLAY_INFO(overlay_11
, 0),
2882 OVERLAY_INFO(overlay_12
, 0),
2883 OVERLAY_INFO(overlay_13
, 0),
2884 OVERLAY_INFO(overlay_15
, 0),
2885 OVERLAY_INFO(overlay_gpio_01
, 0),
2886 OVERLAY_INFO(overlay_gpio_02a
, 0),
2887 OVERLAY_INFO(overlay_gpio_02b
, 0),
2888 OVERLAY_INFO(overlay_gpio_03
, 0),
2889 OVERLAY_INFO(overlay_gpio_04a
, 0),
2890 OVERLAY_INFO(overlay_gpio_04b
, 0),
2891 OVERLAY_INFO(overlay_bad_add_dup_node
, -EINVAL
),
2892 OVERLAY_INFO(overlay_bad_add_dup_prop
, -EINVAL
),
2893 OVERLAY_INFO(overlay_bad_phandle
, -EINVAL
),
2894 OVERLAY_INFO(overlay_bad_symbol
, -EINVAL
),
2896 {.dtb_begin
= NULL
, .dtb_end
= NULL
, .expected_result
= 0, .name
= NULL
}
2899 static struct device_node
*overlay_base_root
;
2901 static void * __init
dt_alloc_memory(u64 size
, u64 align
)
2903 void *ptr
= memblock_alloc(size
, align
);
2906 panic("%s: Failed to allocate %llu bytes align=0x%llx\n",
2907 __func__
, size
, align
);
2913 * Create base device tree for the overlay unittest.
2915 * This is called from very early boot code.
2917 * Do as much as possible the same way as done in __unflatten_device_tree
2918 * and other early boot steps for the normal FDT so that the overlay base
2919 * unflattened tree will have the same characteristics as the real tree
2920 * (such as having memory allocated by the early allocator). The goal
2921 * is to test "the real thing" as much as possible, and test "test setup
2922 * code" as little as possible.
2924 * Have to stop before resolving phandles, because that uses kmalloc.
2926 void __init
unittest_unflatten_overlay_base(void)
2928 struct overlay_info
*info
;
2933 const char *overlay_name
= "overlay_base";
2935 for (info
= overlays
; info
&& info
->name
; info
++) {
2936 if (!strcmp(overlay_name
, info
->name
)) {
2942 pr_err("no overlay data for %s\n", overlay_name
);
2946 info
= &overlays
[0];
2948 if (info
->expected_result
!= -9999) {
2949 pr_err("No dtb 'overlay_base' to attach\n");
2953 data_size
= info
->dtb_end
- info
->dtb_begin
;
2955 pr_err("No dtb 'overlay_base' to attach\n");
2959 size
= fdt_totalsize(info
->dtb_begin
);
2960 if (size
!= data_size
) {
2961 pr_err("dtb 'overlay_base' header totalsize != actual size");
2965 new_fdt
= dt_alloc_memory(size
, roundup_pow_of_two(FDT_V17_SIZE
));
2967 pr_err("alloc for dtb 'overlay_base' failed");
2971 memcpy(new_fdt
, info
->dtb_begin
, size
);
2973 __unflatten_device_tree(new_fdt
, NULL
, &overlay_base_root
,
2974 dt_alloc_memory
, true);
2978 * The purpose of of_unittest_overlay_data_add is to add an
2979 * overlay in the normal fashion. This is a test of the whole
2980 * picture, instead of testing individual elements.
2982 * A secondary purpose is to be able to verify that the contents of
2983 * /proc/device-tree/ contains the updated structure and values from
2984 * the overlay. That must be verified separately in user space.
2986 * Return 0 on unexpected error.
2988 static int __init
overlay_data_apply(const char *overlay_name
, int *overlay_id
)
2990 struct overlay_info
*info
;
2995 for (info
= overlays
; info
&& info
->name
; info
++) {
2996 if (!strcmp(overlay_name
, info
->name
)) {
3002 pr_err("no overlay data for %s\n", overlay_name
);
3006 size
= info
->dtb_end
- info
->dtb_begin
;
3008 pr_err("no overlay data for %s\n", overlay_name
);
3010 ret
= of_overlay_fdt_apply(info
->dtb_begin
, size
, &info
->overlay_id
);
3012 *overlay_id
= info
->overlay_id
;
3016 pr_debug("%s applied\n", overlay_name
);
3019 if (ret
!= info
->expected_result
)
3020 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n",
3021 info
->expected_result
, ret
, overlay_name
);
3023 return (ret
== info
->expected_result
);
3027 * The purpose of of_unittest_overlay_high_level is to add an overlay
3028 * in the normal fashion. This is a test of the whole picture,
3029 * instead of individual elements.
3031 * The first part of the function is _not_ normal overlay usage; it is
3032 * finishing splicing the base overlay device tree into the live tree.
3034 static __init
void of_unittest_overlay_high_level(void)
3036 struct device_node
*last_sibling
;
3037 struct device_node
*np
;
3038 struct device_node
*of_symbols
;
3039 struct device_node
*overlay_base_symbols
;
3040 struct device_node
**pprev
;
3041 struct property
*prop
;
3044 if (!overlay_base_root
) {
3045 unittest(0, "overlay_base_root not initialized\n");
3050 * Could not fixup phandles in unittest_unflatten_overlay_base()
3051 * because kmalloc() was not yet available.
3053 of_overlay_mutex_lock();
3054 of_resolve_phandles(overlay_base_root
);
3055 of_overlay_mutex_unlock();
3059 * do not allow overlay_base to duplicate any node already in
3060 * tree, this greatly simplifies the code
3064 * remove overlay_base_root node "__local_fixups", after
3065 * being used by of_resolve_phandles()
3067 pprev
= &overlay_base_root
->child
;
3068 for (np
= overlay_base_root
->child
; np
; np
= np
->sibling
) {
3069 if (of_node_name_eq(np
, "__local_fixups__")) {
3070 *pprev
= np
->sibling
;
3073 pprev
= &np
->sibling
;
3076 /* remove overlay_base_root node "__symbols__" if in live tree */
3077 of_symbols
= of_get_child_by_name(of_root
, "__symbols__");
3079 /* will have to graft properties from node into live tree */
3080 pprev
= &overlay_base_root
->child
;
3081 for (np
= overlay_base_root
->child
; np
; np
= np
->sibling
) {
3082 if (of_node_name_eq(np
, "__symbols__")) {
3083 overlay_base_symbols
= np
;
3084 *pprev
= np
->sibling
;
3087 pprev
= &np
->sibling
;
3091 for_each_child_of_node(overlay_base_root
, np
) {
3092 struct device_node
*base_child
;
3093 for_each_child_of_node(of_root
, base_child
) {
3094 if (!strcmp(np
->full_name
, base_child
->full_name
)) {
3095 unittest(0, "illegal node name in overlay_base %pOFn",
3103 * overlay 'overlay_base' is not allowed to have root
3104 * properties, so only need to splice nodes into main device tree.
3106 * root node of *overlay_base_root will not be freed, it is lost
3110 for (np
= overlay_base_root
->child
; np
; np
= np
->sibling
)
3111 np
->parent
= of_root
;
3113 mutex_lock(&of_mutex
);
3115 for (last_sibling
= np
= of_root
->child
; np
; np
= np
->sibling
)
3119 last_sibling
->sibling
= overlay_base_root
->child
;
3121 of_root
->child
= overlay_base_root
->child
;
3123 for_each_of_allnodes_from(overlay_base_root
, np
)
3124 __of_attach_node_sysfs(np
);
3127 struct property
*new_prop
;
3128 for_each_property_of_node(overlay_base_symbols
, prop
) {
3130 new_prop
= __of_prop_dup(prop
, GFP_KERNEL
);
3132 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__",
3136 if (__of_add_property(of_symbols
, new_prop
)) {
3137 kfree(new_prop
->name
);
3138 kfree(new_prop
->value
);
3140 /* "name" auto-generated by unflatten */
3141 if (!strcmp(prop
->name
, "name"))
3143 unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
3147 if (__of_add_property_sysfs(of_symbols
, new_prop
)) {
3148 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs",
3155 mutex_unlock(&of_mutex
);
3158 /* now do the normal overlay usage test */
3160 EXPECT_BEGIN(KERN_ERR
,
3161 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3162 EXPECT_BEGIN(KERN_ERR
,
3163 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3164 EXPECT_BEGIN(KERN_ERR
,
3165 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3166 EXPECT_BEGIN(KERN_ERR
,
3167 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3168 EXPECT_BEGIN(KERN_ERR
,
3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3170 EXPECT_BEGIN(KERN_ERR
,
3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3172 EXPECT_BEGIN(KERN_ERR
,
3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3174 EXPECT_BEGIN(KERN_ERR
,
3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3176 EXPECT_BEGIN(KERN_ERR
,
3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3178 EXPECT_BEGIN(KERN_ERR
,
3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3180 EXPECT_BEGIN(KERN_ERR
,
3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3183 ret
= overlay_data_apply("overlay", NULL
);
3185 EXPECT_END(KERN_ERR
,
3186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right");
3187 EXPECT_END(KERN_ERR
,
3188 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left");
3189 EXPECT_END(KERN_ERR
,
3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200");
3191 EXPECT_END(KERN_ERR
,
3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2");
3193 EXPECT_END(KERN_ERR
,
3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate");
3195 EXPECT_END(KERN_ERR
,
3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color");
3197 EXPECT_END(KERN_ERR
,
3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status");
3199 EXPECT_END(KERN_ERR
,
3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up");
3201 EXPECT_END(KERN_ERR
,
3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up");
3203 EXPECT_END(KERN_ERR
,
3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status");
3205 EXPECT_END(KERN_ERR
,
3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status");
3208 unittest(ret
, "Adding overlay 'overlay' failed\n");
3210 EXPECT_BEGIN(KERN_ERR
,
3211 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3212 EXPECT_BEGIN(KERN_ERR
,
3213 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3215 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL
),
3216 "Adding overlay 'overlay_bad_add_dup_node' failed\n");
3218 EXPECT_END(KERN_ERR
,
3219 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name");
3220 EXPECT_END(KERN_ERR
,
3221 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller");
3223 EXPECT_BEGIN(KERN_ERR
,
3224 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3225 EXPECT_BEGIN(KERN_ERR
,
3226 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3227 EXPECT_BEGIN(KERN_ERR
,
3228 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3230 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL
),
3231 "Adding overlay 'overlay_bad_add_dup_prop' failed\n");
3233 EXPECT_END(KERN_ERR
,
3234 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name");
3235 EXPECT_END(KERN_ERR
,
3236 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail");
3237 EXPECT_END(KERN_ERR
,
3238 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric");
3240 unittest(overlay_data_apply("overlay_bad_phandle", NULL
),
3241 "Adding overlay 'overlay_bad_phandle' failed\n");
3243 unittest(overlay_data_apply("overlay_bad_symbol", NULL
),
3244 "Adding overlay 'overlay_bad_symbol' failed\n");
3249 mutex_unlock(&of_mutex
);
3254 static inline __init
void of_unittest_overlay_high_level(void) {}
3258 static int __init
of_unittest(void)
3260 struct device_node
*np
;
3263 pr_info("start of unittest - you will see error messages\n");
3265 /* adding data for unittest */
3267 if (IS_ENABLED(CONFIG_UML
))
3268 unittest_unflatten_overlay_base();
3270 res
= unittest_data_add();
3274 of_aliases
= of_find_node_by_path("/aliases");
3276 np
= of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
3278 pr_info("No testcase data in device tree; not running tests\n");
3283 of_unittest_check_tree_linkage();
3284 of_unittest_check_phandles();
3285 of_unittest_find_node_by_name();
3286 of_unittest_dynamic();
3287 of_unittest_parse_phandle_with_args();
3288 of_unittest_parse_phandle_with_args_map();
3289 of_unittest_printf();
3290 of_unittest_property_string();
3291 of_unittest_property_copy();
3292 of_unittest_changeset();
3293 of_unittest_parse_interrupts();
3294 of_unittest_parse_interrupts_extended();
3295 of_unittest_dma_get_max_cpu_address();
3296 of_unittest_parse_dma_ranges();
3297 of_unittest_pci_dma_ranges();
3298 of_unittest_match_node();
3299 of_unittest_platform_populate();
3300 of_unittest_overlay();
3302 /* Double check linkage after removing testcase data */
3303 of_unittest_check_tree_linkage();
3305 of_unittest_overlay_high_level();
3307 pr_info("end of unittest - %i passed, %i failed\n",
3308 unittest_results
.passed
, unittest_results
.failed
);
3312 late_initcall(of_unittest
);