1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Self tests for device tree subsystem 4 */ 5 6 #define pr_fmt(fmt) "### dt-test ### " fmt 7 8 #include <linux/memblock.h> 9 #include <linux/clk.h> 10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */ 11 #include <linux/err.h> 12 #include <linux/errno.h> 13 #include <linux/hashtable.h> 14 #include <linux/libfdt.h> 15 #include <linux/of.h> 16 #include <linux/of_address.h> 17 #include <linux/of_fdt.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <linux/list.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 #include <linux/pci.h> 26 #include <linux/kernel.h> 27 28 #include <linux/i2c.h> 29 #include <linux/i2c-mux.h> 30 #include <linux/gpio/driver.h> 31 32 #include <linux/bitops.h> 33 34 #include "of_private.h" 35 36 static struct unittest_results { 37 int passed; 38 int failed; 39 } unittest_results; 40 41 #define unittest(result, fmt, ...) ({ \ 42 bool failed = !(result); \ 43 if (failed) { \ 44 unittest_results.failed++; \ 45 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 46 } else { \ 47 unittest_results.passed++; \ 48 pr_info("pass %s():%i\n", __func__, __LINE__); \ 49 } \ 50 failed; \ 51 }) 52 53 #ifdef CONFIG_OF_KOBJ 54 #define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref) 55 #else 56 #define OF_KREF_READ(NODE) 1 57 #endif 58 59 /* 60 * Expected message may have a message level other than KERN_INFO. 61 * Print the expected message only if the current loglevel will allow 62 * the actual message to print. 63 * 64 * Do not use EXPECT_BEGIN(), EXPECT_END(), EXPECT_NOT_BEGIN(), or 65 * EXPECT_NOT_END() to report messages expected to be reported or not 66 * reported by pr_debug(). 67 */ 68 #define EXPECT_BEGIN(level, fmt, ...) \ 69 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 70 71 #define EXPECT_END(level, fmt, ...) \ 72 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 73 74 #define EXPECT_NOT_BEGIN(level, fmt, ...) \ 75 printk(level pr_fmt("EXPECT_NOT \\ : ") fmt, ##__VA_ARGS__) 76 77 #define EXPECT_NOT_END(level, fmt, ...) \ 78 printk(level pr_fmt("EXPECT_NOT / : ") fmt, ##__VA_ARGS__) 79 80 static void __init of_unittest_find_node_by_name(void) 81 { 82 struct device_node *np; 83 const char *options, *name; 84 85 np = of_find_node_by_path("/testcase-data"); 86 name = kasprintf(GFP_KERNEL, "%pOF", np); 87 unittest(np && name && !strcmp("/testcase-data", name), 88 "find /testcase-data failed\n"); 89 of_node_put(np); 90 kfree(name); 91 92 /* Test if trailing '/' works */ 93 np = of_find_node_by_path("/testcase-data/"); 94 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 95 96 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 97 name = kasprintf(GFP_KERNEL, "%pOF", np); 98 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 99 "find /testcase-data/phandle-tests/consumer-a failed\n"); 100 of_node_put(np); 101 kfree(name); 102 103 np = of_find_node_by_path("testcase-alias"); 104 name = kasprintf(GFP_KERNEL, "%pOF", np); 105 unittest(np && name && !strcmp("/testcase-data", name), 106 "find testcase-alias failed\n"); 107 of_node_put(np); 108 kfree(name); 109 110 /* Test if trailing '/' works on aliases */ 111 np = of_find_node_by_path("testcase-alias/"); 112 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 113 114 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 115 name = kasprintf(GFP_KERNEL, "%pOF", np); 116 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 117 "find testcase-alias/phandle-tests/consumer-a failed\n"); 118 of_node_put(np); 119 kfree(name); 120 121 np = of_find_node_by_path("/testcase-data/missing-path"); 122 unittest(!np, "non-existent path returned node %pOF\n", np); 123 of_node_put(np); 124 125 np = of_find_node_by_path("missing-alias"); 126 unittest(!np, "non-existent alias returned node %pOF\n", np); 127 of_node_put(np); 128 129 np = of_find_node_by_path("testcase-alias/missing-path"); 130 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 131 of_node_put(np); 132 133 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 134 unittest(np && !strcmp("testoption", options), 135 "option path test failed\n"); 136 of_node_put(np); 137 138 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 139 unittest(np && !strcmp("test/option", options), 140 "option path test, subcase #1 failed\n"); 141 of_node_put(np); 142 143 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 144 unittest(np && !strcmp("test/option", options), 145 "option path test, subcase #2 failed\n"); 146 of_node_put(np); 147 148 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 149 unittest(np, "NULL option path test failed\n"); 150 of_node_put(np); 151 152 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 153 &options); 154 unittest(np && !strcmp("testaliasoption", options), 155 "option alias path test failed\n"); 156 of_node_put(np); 157 158 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 159 &options); 160 unittest(np && !strcmp("test/alias/option", options), 161 "option alias path test, subcase #1 failed\n"); 162 of_node_put(np); 163 164 np = of_find_node_opts_by_path("testcase-alias/phandle-tests/consumer-a:testaliasoption", 165 &options); 166 name = kasprintf(GFP_KERNEL, "%pOF", np); 167 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name) && 168 !strcmp("testaliasoption", options), 169 "option alias path test, subcase #2 failed\n"); 170 of_node_put(np); 171 kfree(name); 172 173 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 174 unittest(np, "NULL option alias path test failed\n"); 175 of_node_put(np); 176 177 options = "testoption"; 178 np = of_find_node_opts_by_path("testcase-alias", &options); 179 unittest(np && !options, "option clearing test failed\n"); 180 of_node_put(np); 181 182 options = "testoption"; 183 np = of_find_node_opts_by_path("/", &options); 184 unittest(np && !options, "option clearing root node test failed\n"); 185 of_node_put(np); 186 } 187 188 static void __init of_unittest_dynamic(void) 189 { 190 struct device_node *np; 191 struct property *prop; 192 193 np = of_find_node_by_path("/testcase-data"); 194 if (!np) { 195 pr_err("missing testcase data\n"); 196 return; 197 } 198 199 /* Array of 4 properties for the purpose of testing */ 200 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 201 if (!prop) { 202 unittest(0, "kzalloc() failed\n"); 203 return; 204 } 205 206 /* Add a new property - should pass*/ 207 prop->name = "new-property"; 208 prop->value = "new-property-data"; 209 prop->length = strlen(prop->value) + 1; 210 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 211 212 /* Try to add an existing property - should fail */ 213 prop++; 214 prop->name = "new-property"; 215 prop->value = "new-property-data-should-fail"; 216 prop->length = strlen(prop->value) + 1; 217 unittest(of_add_property(np, prop) != 0, 218 "Adding an existing property should have failed\n"); 219 220 /* Try to modify an existing property - should pass */ 221 prop->value = "modify-property-data-should-pass"; 222 prop->length = strlen(prop->value) + 1; 223 unittest(of_update_property(np, prop) == 0, 224 "Updating an existing property should have passed\n"); 225 226 /* Try to modify non-existent property - should pass*/ 227 prop++; 228 prop->name = "modify-property"; 229 prop->value = "modify-missing-property-data-should-pass"; 230 prop->length = strlen(prop->value) + 1; 231 unittest(of_update_property(np, prop) == 0, 232 "Updating a missing property should have passed\n"); 233 234 /* Remove property - should pass */ 235 unittest(of_remove_property(np, prop) == 0, 236 "Removing a property should have passed\n"); 237 238 /* Adding very large property - should pass */ 239 prop++; 240 prop->name = "large-property-PAGE_SIZEx8"; 241 prop->length = PAGE_SIZE * 8; 242 prop->value = kzalloc(prop->length, GFP_KERNEL); 243 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 244 if (prop->value) 245 unittest(of_add_property(np, prop) == 0, 246 "Adding a large property should have passed\n"); 247 } 248 249 static int __init of_unittest_check_node_linkage(struct device_node *np) 250 { 251 int count = 0, rc; 252 253 for_each_child_of_node_scoped(np, child) { 254 if (child->parent != np) { 255 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 256 child, np); 257 return -EINVAL; 258 } 259 260 rc = of_unittest_check_node_linkage(child); 261 if (rc < 0) 262 return rc; 263 count += rc; 264 } 265 266 return count + 1; 267 } 268 269 static void __init of_unittest_check_tree_linkage(void) 270 { 271 struct device_node *np; 272 int allnode_count = 0, child_count; 273 274 if (!of_root) 275 return; 276 277 for_each_of_allnodes(np) 278 allnode_count++; 279 child_count = of_unittest_check_node_linkage(of_root); 280 281 unittest(child_count > 0, "Device node data structure is corrupted\n"); 282 unittest(child_count == allnode_count, 283 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 284 allnode_count, child_count); 285 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 286 } 287 288 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 289 const char *expected) 290 { 291 unsigned char *buf; 292 int buf_size; 293 int size, i; 294 295 buf_size = strlen(expected) + 10; 296 buf = kmalloc(buf_size, GFP_KERNEL); 297 if (!buf) 298 return; 299 300 /* Baseline; check conversion with a large size limit */ 301 memset(buf, 0xff, buf_size); 302 size = snprintf(buf, buf_size - 2, fmt, np); 303 304 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 305 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 306 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 307 fmt, expected, buf); 308 309 /* Make sure length limits work */ 310 size++; 311 for (i = 0; i < 2; i++, size--) { 312 /* Clear the buffer, and make sure it works correctly still */ 313 memset(buf, 0xff, buf_size); 314 snprintf(buf, size+1, fmt, np); 315 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 316 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 317 size, fmt, expected, buf); 318 } 319 kfree(buf); 320 } 321 322 static void __init of_unittest_printf(void) 323 { 324 struct device_node *np; 325 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 326 char phandle_str[16] = ""; 327 328 np = of_find_node_by_path(full_name); 329 if (!np) { 330 unittest(np, "testcase data missing\n"); 331 return; 332 } 333 334 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 335 336 of_unittest_printf_one(np, "%pOF", full_name); 337 of_unittest_printf_one(np, "%pOFf", full_name); 338 of_unittest_printf_one(np, "%pOFn", "dev"); 339 of_unittest_printf_one(np, "%2pOFn", "dev"); 340 of_unittest_printf_one(np, "%5pOFn", " dev"); 341 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 342 of_unittest_printf_one(np, "%pOFp", phandle_str); 343 of_unittest_printf_one(np, "%pOFP", "dev@100"); 344 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 345 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 346 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 347 of_unittest_printf_one(of_root, "%pOFP", "/"); 348 of_unittest_printf_one(np, "%pOFF", "----"); 349 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 350 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 351 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 352 of_unittest_printf_one(np, "%pOFC", 353 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 354 } 355 356 struct node_hash { 357 struct hlist_node node; 358 struct device_node *np; 359 }; 360 361 static DEFINE_HASHTABLE(phandle_ht, 8); 362 static void __init of_unittest_check_phandles(void) 363 { 364 struct device_node *np; 365 struct node_hash *nh; 366 struct hlist_node *tmp; 367 int i, dup_count = 0, phandle_count = 0; 368 369 for_each_of_allnodes(np) { 370 if (!np->phandle) 371 continue; 372 373 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 374 if (nh->np->phandle == np->phandle) { 375 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 376 np->phandle, nh->np, np); 377 dup_count++; 378 break; 379 } 380 } 381 382 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 383 if (!nh) 384 return; 385 386 nh->np = np; 387 hash_add(phandle_ht, &nh->node, np->phandle); 388 phandle_count++; 389 } 390 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 391 dup_count, phandle_count); 392 393 /* Clean up */ 394 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 395 hash_del(&nh->node); 396 kfree(nh); 397 } 398 } 399 400 static void __init of_unittest_parse_phandle_with_args(void) 401 { 402 struct device_node *np; 403 struct of_phandle_args args; 404 int i, rc; 405 406 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 407 if (!np) { 408 pr_err("missing testcase data\n"); 409 return; 410 } 411 412 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 413 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 414 415 for (i = 0; i < 8; i++) { 416 bool passed = true; 417 418 memset(&args, 0, sizeof(args)); 419 rc = of_parse_phandle_with_args(np, "phandle-list", 420 "#phandle-cells", i, &args); 421 422 /* Test the values from tests-phandle.dtsi */ 423 switch (i) { 424 case 0: 425 passed &= !rc; 426 passed &= (args.args_count == 1); 427 passed &= (args.args[0] == (i + 1)); 428 break; 429 case 1: 430 passed &= !rc; 431 passed &= (args.args_count == 2); 432 passed &= (args.args[0] == (i + 1)); 433 passed &= (args.args[1] == 0); 434 break; 435 case 2: 436 passed &= (rc == -ENOENT); 437 break; 438 case 3: 439 passed &= !rc; 440 passed &= (args.args_count == 3); 441 passed &= (args.args[0] == (i + 1)); 442 passed &= (args.args[1] == 4); 443 passed &= (args.args[2] == 3); 444 break; 445 case 4: 446 passed &= !rc; 447 passed &= (args.args_count == 2); 448 passed &= (args.args[0] == (i + 1)); 449 passed &= (args.args[1] == 100); 450 break; 451 case 5: 452 passed &= !rc; 453 passed &= (args.args_count == 0); 454 break; 455 case 6: 456 passed &= !rc; 457 passed &= (args.args_count == 1); 458 passed &= (args.args[0] == (i + 1)); 459 break; 460 case 7: 461 passed &= (rc == -ENOENT); 462 break; 463 default: 464 passed = false; 465 } 466 467 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 468 i, args.np, rc); 469 470 if (rc == 0) 471 of_node_put(args.np); 472 } 473 474 /* Check for missing list property */ 475 memset(&args, 0, sizeof(args)); 476 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 477 "#phandle-cells", 0, &args); 478 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 479 rc = of_count_phandle_with_args(np, "phandle-list-missing", 480 "#phandle-cells"); 481 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 482 483 /* Check for missing cells property */ 484 memset(&args, 0, sizeof(args)); 485 486 EXPECT_BEGIN(KERN_INFO, 487 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 488 489 rc = of_parse_phandle_with_args(np, "phandle-list", 490 "#phandle-cells-missing", 0, &args); 491 492 EXPECT_END(KERN_INFO, 493 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 494 495 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 496 497 EXPECT_BEGIN(KERN_INFO, 498 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 499 500 rc = of_count_phandle_with_args(np, "phandle-list", 501 "#phandle-cells-missing"); 502 503 EXPECT_END(KERN_INFO, 504 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 505 506 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 507 508 /* Check for bad phandle in list */ 509 memset(&args, 0, sizeof(args)); 510 511 EXPECT_BEGIN(KERN_INFO, 512 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 513 514 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 515 "#phandle-cells", 0, &args); 516 517 EXPECT_END(KERN_INFO, 518 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 519 520 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 521 522 EXPECT_BEGIN(KERN_INFO, 523 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 524 525 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 526 "#phandle-cells"); 527 528 EXPECT_END(KERN_INFO, 529 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 530 531 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 532 533 /* Check for incorrectly formed argument list */ 534 memset(&args, 0, sizeof(args)); 535 536 EXPECT_BEGIN(KERN_INFO, 537 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 538 539 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 540 "#phandle-cells", 1, &args); 541 542 EXPECT_END(KERN_INFO, 543 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 544 545 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 546 547 EXPECT_BEGIN(KERN_INFO, 548 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 549 550 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 551 "#phandle-cells"); 552 553 EXPECT_END(KERN_INFO, 554 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 555 556 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 557 } 558 559 static void __init of_unittest_parse_phandle_with_args_map(void) 560 { 561 struct device_node *np, *p[6] = {}; 562 struct of_phandle_args args; 563 unsigned int prefs[6]; 564 int i, rc; 565 566 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 567 if (!np) { 568 pr_err("missing testcase data\n"); 569 return; 570 } 571 572 p[0] = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 573 p[1] = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 574 p[2] = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 575 p[3] = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 576 p[4] = of_find_node_by_path("/testcase-data/phandle-tests/provider4"); 577 p[5] = of_find_node_by_path("/testcase-data/phandle-tests/provider5"); 578 for (i = 0; i < ARRAY_SIZE(p); ++i) { 579 if (!p[i]) { 580 pr_err("missing testcase data\n"); 581 return; 582 } 583 prefs[i] = OF_KREF_READ(p[i]); 584 } 585 586 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 587 unittest(rc == 8, "of_count_phandle_with_args() returned %i, expected 8\n", rc); 588 589 for (i = 0; i < 9; i++) { 590 bool passed = true; 591 592 memset(&args, 0, sizeof(args)); 593 rc = of_parse_phandle_with_args_map(np, "phandle-list", 594 "phandle", i, &args); 595 596 /* Test the values from tests-phandle.dtsi */ 597 switch (i) { 598 case 0: 599 passed &= !rc; 600 passed &= (args.np == p[1]); 601 passed &= (args.args_count == 1); 602 passed &= (args.args[0] == 1); 603 break; 604 case 1: 605 passed &= !rc; 606 passed &= (args.np == p[3]); 607 passed &= (args.args_count == 3); 608 passed &= (args.args[0] == 2); 609 passed &= (args.args[1] == 5); 610 passed &= (args.args[2] == 3); 611 break; 612 case 2: 613 passed &= (rc == -ENOENT); 614 break; 615 case 3: 616 passed &= !rc; 617 passed &= (args.np == p[0]); 618 passed &= (args.args_count == 0); 619 break; 620 case 4: 621 passed &= !rc; 622 passed &= (args.np == p[1]); 623 passed &= (args.args_count == 1); 624 passed &= (args.args[0] == 3); 625 break; 626 case 5: 627 passed &= !rc; 628 passed &= (args.np == p[0]); 629 passed &= (args.args_count == 0); 630 break; 631 case 6: 632 passed &= !rc; 633 passed &= (args.np == p[2]); 634 passed &= (args.args_count == 2); 635 passed &= (args.args[0] == 15); 636 passed &= (args.args[1] == 0x20); 637 break; 638 case 7: 639 passed &= !rc; 640 passed &= (args.np == p[3]); 641 passed &= (args.args_count == 3); 642 passed &= (args.args[0] == 2); 643 passed &= (args.args[1] == 5); 644 passed &= (args.args[2] == 3); 645 break; 646 case 8: 647 passed &= (rc == -ENOENT); 648 break; 649 default: 650 passed = false; 651 } 652 653 unittest(passed, "index %i - data error on node %s rc=%i\n", 654 i, args.np->full_name, rc); 655 656 if (rc == 0) 657 of_node_put(args.np); 658 } 659 660 /* Check for missing list property */ 661 memset(&args, 0, sizeof(args)); 662 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 663 "phandle", 0, &args); 664 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 665 666 /* Check for missing cells,map,mask property */ 667 memset(&args, 0, sizeof(args)); 668 669 EXPECT_BEGIN(KERN_INFO, 670 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 671 672 rc = of_parse_phandle_with_args_map(np, "phandle-list", 673 "phandle-missing", 0, &args); 674 EXPECT_END(KERN_INFO, 675 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 676 677 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 678 679 /* Check for bad phandle in list */ 680 memset(&args, 0, sizeof(args)); 681 682 EXPECT_BEGIN(KERN_INFO, 683 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678"); 684 685 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 686 "phandle", 0, &args); 687 EXPECT_END(KERN_INFO, 688 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678"); 689 690 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 691 692 /* Check for incorrectly formed argument list */ 693 memset(&args, 0, sizeof(args)); 694 695 EXPECT_BEGIN(KERN_INFO, 696 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1"); 697 698 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 699 "phandle", 1, &args); 700 EXPECT_END(KERN_INFO, 701 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1"); 702 703 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 704 705 for (i = 0; i < ARRAY_SIZE(p); ++i) { 706 unittest(prefs[i] == OF_KREF_READ(p[i]), 707 "provider%d: expected:%d got:%d\n", 708 i, prefs[i], OF_KREF_READ(p[i])); 709 of_node_put(p[i]); 710 } 711 } 712 713 static void __init of_unittest_property_string(void) 714 { 715 const char *strings[4]; 716 struct device_node *np; 717 int rc; 718 719 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 720 if (!np) { 721 pr_err("No testcase data in device tree\n"); 722 return; 723 } 724 725 rc = of_property_match_string(np, "phandle-list-names", "first"); 726 unittest(rc == 0, "first expected:0 got:%i\n", rc); 727 rc = of_property_match_string(np, "phandle-list-names", "second"); 728 unittest(rc == 1, "second expected:1 got:%i\n", rc); 729 rc = of_property_match_string(np, "phandle-list-names", "third"); 730 unittest(rc == 2, "third expected:2 got:%i\n", rc); 731 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 732 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 733 rc = of_property_match_string(np, "missing-property", "blah"); 734 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 735 rc = of_property_match_string(np, "empty-property", "blah"); 736 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 737 rc = of_property_match_string(np, "unterminated-string", "blah"); 738 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 739 740 /* of_property_count_strings() tests */ 741 rc = of_property_count_strings(np, "string-property"); 742 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 743 rc = of_property_count_strings(np, "phandle-list-names"); 744 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 745 rc = of_property_count_strings(np, "unterminated-string"); 746 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 747 rc = of_property_count_strings(np, "unterminated-string-list"); 748 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 749 750 /* of_property_read_string_index() tests */ 751 rc = of_property_read_string_index(np, "string-property", 0, strings); 752 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 753 strings[0] = NULL; 754 rc = of_property_read_string_index(np, "string-property", 1, strings); 755 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 756 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 757 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 758 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 759 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 760 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 761 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 762 strings[0] = NULL; 763 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 764 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 765 strings[0] = NULL; 766 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 767 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 768 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 769 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 770 strings[0] = NULL; 771 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 772 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 773 strings[1] = NULL; 774 775 /* of_property_read_string_array() tests */ 776 rc = of_property_read_string_array(np, "string-property", strings, 4); 777 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 778 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 779 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 780 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 781 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 782 /* -- An incorrectly formed string should cause a failure */ 783 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 784 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 785 /* -- parsing the correctly formed strings should still work: */ 786 strings[2] = NULL; 787 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 788 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 789 strings[1] = NULL; 790 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 791 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 792 } 793 794 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 795 (p1)->value && (p2)->value && \ 796 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 797 !strcmp((p1)->name, (p2)->name)) 798 static void __init of_unittest_property_copy(void) 799 { 800 #ifdef CONFIG_OF_DYNAMIC 801 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 802 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 803 struct property *new; 804 805 new = __of_prop_dup(&p1, GFP_KERNEL); 806 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 807 __of_prop_free(new); 808 809 new = __of_prop_dup(&p2, GFP_KERNEL); 810 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 811 __of_prop_free(new); 812 #endif 813 } 814 815 static void __init of_unittest_changeset(void) 816 { 817 #ifdef CONFIG_OF_DYNAMIC 818 int ret; 819 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 820 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 821 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 822 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 823 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 824 struct property *ppremove; 825 struct device_node *n1, *n2, *n21, *n22, *nchangeset, *nremove, *parent, *np; 826 static const char * const str_array[] = { "str1", "str2", "str3" }; 827 const u32 u32_array[] = { 1, 2, 3 }; 828 struct of_changeset chgset; 829 const char *propstr = NULL; 830 831 n1 = __of_node_dup(NULL, "n1"); 832 unittest(n1, "testcase setup failure\n"); 833 834 n2 = __of_node_dup(NULL, "n2"); 835 unittest(n2, "testcase setup failure\n"); 836 837 n21 = __of_node_dup(NULL, "n21"); 838 unittest(n21, "testcase setup failure %p\n", n21); 839 840 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 841 nremove = of_get_child_by_name(nchangeset, "node-remove"); 842 unittest(nremove, "testcase setup failure\n"); 843 844 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 845 unittest(ppadd, "testcase setup failure\n"); 846 847 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 848 unittest(ppname_n1, "testcase setup failure\n"); 849 850 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 851 unittest(ppname_n2, "testcase setup failure\n"); 852 853 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 854 unittest(ppname_n21, "testcase setup failure\n"); 855 856 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 857 unittest(ppupdate, "testcase setup failure\n"); 858 859 parent = nchangeset; 860 n1->parent = parent; 861 n2->parent = parent; 862 n21->parent = n2; 863 864 ppremove = of_find_property(parent, "prop-remove", NULL); 865 unittest(ppremove, "failed to find removal prop"); 866 867 of_changeset_init(&chgset); 868 869 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 870 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 871 872 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 873 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 874 875 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 876 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 877 878 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 879 880 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 881 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 882 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 883 n22 = of_changeset_create_node(&chgset, n2, "n22"); 884 unittest(n22, "fail create n22\n"); 885 unittest(!of_changeset_add_prop_string(&chgset, n22, "prop-str", "abcd"), 886 "fail add prop prop-str"); 887 unittest(!of_changeset_add_prop_string_array(&chgset, n22, "prop-str-array", 888 (const char **)str_array, 889 ARRAY_SIZE(str_array)), 890 "fail add prop prop-str-array"); 891 unittest(!of_changeset_add_prop_u32_array(&chgset, n22, "prop-u32-array", 892 u32_array, ARRAY_SIZE(u32_array)), 893 "fail add prop prop-u32-array"); 894 895 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 896 897 of_node_put(nchangeset); 898 899 /* Make sure node names are constructed correctly */ 900 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 901 "'%pOF' not added\n", n21); 902 of_node_put(np); 903 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22")), 904 "'%pOF' not added\n", n22); 905 of_node_put(np); 906 907 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 908 909 unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21"), 910 "'%pOF' still present after revert\n", n21); 911 912 unittest(of_property_present(parent, "prop-remove"), 913 "failed to find removed prop after revert\n"); 914 915 ret = of_property_read_string(parent, "prop-update", &propstr); 916 unittest(!ret, "failed to find updated prop after revert\n"); 917 if (!ret) 918 unittest(strcmp(propstr, "hello") == 0, "original value not in updated property after revert"); 919 920 of_changeset_destroy(&chgset); 921 922 of_node_put(n1); 923 of_node_put(n2); 924 of_node_put(n21); 925 of_node_put(n22); 926 #endif 927 } 928 929 static void __init __maybe_unused changeset_check_string(struct device_node *np, 930 const char *prop_name, 931 const char *expected_str) 932 { 933 const char *str; 934 int ret; 935 936 ret = of_property_read_string(np, prop_name, &str); 937 if (unittest(ret == 0, "failed to read %s\n", prop_name)) 938 return; 939 940 unittest(strcmp(str, expected_str) == 0, 941 "%s value mismatch (read '%s', exp '%s')\n", 942 prop_name, str, expected_str); 943 } 944 945 static void __init __maybe_unused changeset_check_string_array(struct device_node *np, 946 const char *prop_name, 947 const char * const *expected_array, 948 unsigned int count) 949 { 950 const char *str; 951 unsigned int i; 952 int ret; 953 int cnt; 954 955 cnt = of_property_count_strings(np, prop_name); 956 if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) 957 return; 958 959 if (unittest(cnt == count, 960 "%s count mismatch (read %d, exp %u)\n", 961 prop_name, cnt, count)) 962 return; 963 964 for (i = 0; i < count; i++) { 965 ret = of_property_read_string_index(np, prop_name, i, &str); 966 if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) 967 continue; 968 969 unittest(strcmp(str, expected_array[i]) == 0, 970 "%s[%d] value mismatch (read '%s', exp '%s')\n", 971 prop_name, i, str, expected_array[i]); 972 } 973 } 974 975 static void __init __maybe_unused changeset_check_u32(struct device_node *np, 976 const char *prop_name, 977 u32 expected_u32) 978 { 979 u32 val32; 980 int ret; 981 982 ret = of_property_read_u32(np, prop_name, &val32); 983 if (unittest(ret == 0, "failed to read %s\n", prop_name)) 984 return; 985 986 unittest(val32 == expected_u32, 987 "%s value mismatch (read '%u', exp '%u')\n", 988 prop_name, val32, expected_u32); 989 } 990 991 static void __init __maybe_unused changeset_check_u32_array(struct device_node *np, 992 const char *prop_name, 993 const u32 *expected_array, 994 unsigned int count) 995 { 996 unsigned int i; 997 u32 val32; 998 int ret; 999 int cnt; 1000 1001 cnt = of_property_count_u32_elems(np, prop_name); 1002 if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) 1003 return; 1004 1005 if (unittest(cnt == count, 1006 "%s count mismatch (read %d, exp %u)\n", 1007 prop_name, cnt, count)) 1008 return; 1009 1010 for (i = 0; i < count; i++) { 1011 ret = of_property_read_u32_index(np, prop_name, i, &val32); 1012 if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) 1013 continue; 1014 1015 unittest(val32 == expected_array[i], 1016 "%s[%d] value mismatch (read '%u', exp '%u')\n", 1017 prop_name, i, val32, expected_array[i]); 1018 } 1019 } 1020 1021 static void __init __maybe_unused changeset_check_bool(struct device_node *np, 1022 const char *prop_name) 1023 { 1024 unittest(of_property_read_bool(np, prop_name), 1025 "%s value mismatch (read 'false', exp 'true')\n", prop_name); 1026 } 1027 1028 static void __init of_unittest_changeset_prop(void) 1029 { 1030 #ifdef CONFIG_OF_DYNAMIC 1031 static const char * const str_array[] = { "abc", "defg", "hij" }; 1032 static const u32 u32_array[] = { 123, 4567, 89, 10, 11 }; 1033 struct device_node *nchangeset, *np; 1034 struct of_changeset chgset; 1035 int ret; 1036 1037 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 1038 if (!nchangeset) { 1039 pr_err("missing testcase data\n"); 1040 return; 1041 } 1042 1043 of_changeset_init(&chgset); 1044 1045 np = of_changeset_create_node(&chgset, nchangeset, "test-prop"); 1046 if (unittest(np, "failed to create test-prop node\n")) 1047 goto end_changeset_destroy; 1048 1049 ret = of_changeset_add_prop_string(&chgset, np, "prop-string", "abcde"); 1050 unittest(ret == 0, "failed to add prop-string\n"); 1051 1052 ret = of_changeset_add_prop_string_array(&chgset, np, "prop-string-array", 1053 str_array, ARRAY_SIZE(str_array)); 1054 unittest(ret == 0, "failed to add prop-string-array\n"); 1055 1056 ret = of_changeset_add_prop_u32(&chgset, np, "prop-u32", 1234); 1057 unittest(ret == 0, "failed to add prop-u32\n"); 1058 1059 ret = of_changeset_add_prop_u32_array(&chgset, np, "prop-u32-array", 1060 u32_array, ARRAY_SIZE(u32_array)); 1061 unittest(ret == 0, "failed to add prop-u32-array\n"); 1062 1063 ret = of_changeset_add_prop_bool(&chgset, np, "prop-bool"); 1064 unittest(ret == 0, "failed to add prop-bool\n"); 1065 1066 of_node_put(np); 1067 1068 ret = of_changeset_apply(&chgset); 1069 if (unittest(ret == 0, "failed to apply changeset\n")) 1070 goto end_changeset_destroy; 1071 1072 np = of_find_node_by_path("/testcase-data/changeset/test-prop"); 1073 if (unittest(np, "failed to find test-prop node\n")) 1074 goto end_revert_changeset; 1075 1076 changeset_check_string(np, "prop-string", "abcde"); 1077 changeset_check_string_array(np, "prop-string-array", str_array, ARRAY_SIZE(str_array)); 1078 changeset_check_u32(np, "prop-u32", 1234); 1079 changeset_check_u32_array(np, "prop-u32-array", u32_array, ARRAY_SIZE(u32_array)); 1080 changeset_check_bool(np, "prop-bool"); 1081 1082 of_node_put(np); 1083 1084 end_revert_changeset: 1085 ret = of_changeset_revert(&chgset); 1086 unittest(ret == 0, "failed to revert changeset\n"); 1087 1088 end_changeset_destroy: 1089 of_changeset_destroy(&chgset); 1090 of_node_put(nchangeset); 1091 #endif 1092 } 1093 1094 static void __init of_unittest_dma_get_max_cpu_address(void) 1095 { 1096 struct device_node *np; 1097 phys_addr_t cpu_addr; 1098 1099 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 1100 return; 1101 1102 np = of_find_node_by_path("/testcase-data/address-tests"); 1103 if (!np) { 1104 pr_err("missing testcase data\n"); 1105 return; 1106 } 1107 1108 cpu_addr = of_dma_get_max_cpu_address(np); 1109 unittest(cpu_addr == 0x4fffffff, 1110 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n", 1111 &cpu_addr, 0x4fffffff); 1112 } 1113 1114 static void __init of_unittest_dma_ranges_one(const char *path, 1115 u64 expect_dma_addr, u64 expect_paddr) 1116 { 1117 #ifdef CONFIG_HAS_DMA 1118 struct device_node *np; 1119 const struct bus_dma_region *map = NULL; 1120 int rc; 1121 1122 np = of_find_node_by_path(path); 1123 if (!np) { 1124 pr_err("missing testcase data\n"); 1125 return; 1126 } 1127 1128 rc = of_dma_get_range(np, &map); 1129 1130 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 1131 1132 if (!rc) { 1133 phys_addr_t paddr; 1134 dma_addr_t dma_addr; 1135 struct device *dev_bogus; 1136 1137 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL); 1138 if (!dev_bogus) { 1139 unittest(0, "kzalloc() failed\n"); 1140 kfree(map); 1141 return; 1142 } 1143 1144 dev_bogus->dma_range_map = map; 1145 paddr = dma_to_phys(dev_bogus, expect_dma_addr); 1146 dma_addr = phys_to_dma(dev_bogus, expect_paddr); 1147 1148 unittest(paddr == expect_paddr, 1149 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 1150 &paddr, expect_paddr, np); 1151 unittest(dma_addr == expect_dma_addr, 1152 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 1153 &dma_addr, expect_dma_addr, np); 1154 1155 kfree(map); 1156 kfree(dev_bogus); 1157 } 1158 of_node_put(np); 1159 #endif 1160 } 1161 1162 static void __init of_unittest_parse_dma_ranges(void) 1163 { 1164 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 1165 0x0, 0x20000000); 1166 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)) 1167 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 1168 0x100000000, 0x20000000); 1169 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 1170 0x80000000, 0x20000000); 1171 } 1172 1173 static void __init of_unittest_pci_dma_ranges(void) 1174 { 1175 struct device_node *np; 1176 struct of_pci_range range; 1177 struct of_pci_range_parser parser; 1178 int i = 0; 1179 1180 if (!IS_ENABLED(CONFIG_PCI)) 1181 return; 1182 1183 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 1184 if (!np) { 1185 pr_err("missing testcase data\n"); 1186 return; 1187 } 1188 1189 if (of_pci_dma_range_parser_init(&parser, np)) { 1190 pr_err("missing dma-ranges property\n"); 1191 return; 1192 } 1193 1194 /* 1195 * Get the dma-ranges from the device tree 1196 */ 1197 for_each_of_pci_range(&parser, &range) { 1198 if (!i) { 1199 unittest(range.size == 0x10000000, 1200 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1201 np, range.size); 1202 unittest(range.cpu_addr == 0x20000000, 1203 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1204 range.cpu_addr, np); 1205 unittest(range.pci_addr == 0x80000000, 1206 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1207 range.pci_addr, np); 1208 } else { 1209 unittest(range.size == 0x10000000, 1210 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1211 np, range.size); 1212 unittest(range.cpu_addr == 0x40000000, 1213 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1214 range.cpu_addr, np); 1215 unittest(range.pci_addr == 0xc0000000, 1216 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1217 range.pci_addr, np); 1218 } 1219 i++; 1220 } 1221 1222 of_node_put(np); 1223 } 1224 1225 static void __init of_unittest_pci_empty_dma_ranges(void) 1226 { 1227 struct device_node *np; 1228 struct of_pci_range range; 1229 struct of_pci_range_parser parser; 1230 1231 if (!IS_ENABLED(CONFIG_PCI)) 1232 return; 1233 1234 np = of_find_node_by_path("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0"); 1235 if (!np) { 1236 pr_err("missing testcase data\n"); 1237 return; 1238 } 1239 1240 if (of_pci_dma_range_parser_init(&parser, np)) { 1241 pr_err("missing dma-ranges property\n"); 1242 return; 1243 } 1244 1245 /* 1246 * Get the dma-ranges from the device tree 1247 */ 1248 for_each_of_pci_range(&parser, &range) { 1249 unittest(range.size == 0x10000000, 1250 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1251 np, range.size); 1252 unittest(range.cpu_addr == 0x00000000, 1253 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1254 range.cpu_addr, np); 1255 unittest(range.pci_addr == 0xc0000000, 1256 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1257 range.pci_addr, np); 1258 } 1259 1260 of_node_put(np); 1261 } 1262 1263 static void __init of_unittest_bus_ranges(void) 1264 { 1265 struct device_node *np; 1266 struct of_range range; 1267 struct of_range_parser parser; 1268 struct resource res; 1269 int ret, count, i = 0; 1270 1271 np = of_find_node_by_path("/testcase-data/address-tests"); 1272 if (!np) { 1273 pr_err("missing testcase data\n"); 1274 return; 1275 } 1276 1277 if (of_range_parser_init(&parser, np)) { 1278 pr_err("missing ranges property\n"); 1279 return; 1280 } 1281 1282 ret = of_range_to_resource(np, 1, &res); 1283 unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n", 1284 ret, np); 1285 unittest(resource_type(&res) == IORESOURCE_MEM, 1286 "of_range_to_resource wrong resource type on node %pOF res=%pR\n", 1287 np, &res); 1288 unittest(res.start == 0xd0000000, 1289 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n", 1290 np, &res); 1291 unittest(resource_size(&res) == 0x20000000, 1292 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n", 1293 np, &res); 1294 1295 count = of_range_count(&parser); 1296 unittest(count == 2, 1297 "of_range_count wrong size on node %pOF count=%d\n", 1298 np, count); 1299 1300 /* 1301 * Get the "ranges" from the device tree 1302 */ 1303 for_each_of_range(&parser, &range) { 1304 unittest(range.flags == IORESOURCE_MEM, 1305 "for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n", 1306 np, range.flags, IORESOURCE_MEM); 1307 if (!i) { 1308 unittest(range.size == 0x50000000, 1309 "for_each_of_range wrong size on node %pOF size=%llx\n", 1310 np, range.size); 1311 unittest(range.cpu_addr == 0x70000000, 1312 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1313 range.cpu_addr, np); 1314 unittest(range.bus_addr == 0x70000000, 1315 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1316 range.pci_addr, np); 1317 } else { 1318 unittest(range.size == 0x20000000, 1319 "for_each_of_range wrong size on node %pOF size=%llx\n", 1320 np, range.size); 1321 unittest(range.cpu_addr == 0xd0000000, 1322 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1323 range.cpu_addr, np); 1324 unittest(range.bus_addr == 0x00000000, 1325 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1326 range.pci_addr, np); 1327 } 1328 i++; 1329 } 1330 1331 of_node_put(np); 1332 } 1333 1334 static void __init of_unittest_bus_3cell_ranges(void) 1335 { 1336 struct device_node *np; 1337 struct of_range range; 1338 struct of_range_parser parser; 1339 int i = 0; 1340 1341 np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000"); 1342 if (!np) { 1343 pr_err("missing testcase data\n"); 1344 return; 1345 } 1346 1347 if (of_range_parser_init(&parser, np)) { 1348 pr_err("missing ranges property\n"); 1349 return; 1350 } 1351 1352 /* 1353 * Get the "ranges" from the device tree 1354 */ 1355 for_each_of_range(&parser, &range) { 1356 if (!i) { 1357 unittest(range.flags == 0xf00baa, 1358 "for_each_of_range wrong flags on node %pOF flags=%x\n", 1359 np, range.flags); 1360 unittest(range.size == 0x100000, 1361 "for_each_of_range wrong size on node %pOF size=%llx\n", 1362 np, range.size); 1363 unittest(range.cpu_addr == 0xa0000000, 1364 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1365 range.cpu_addr, np); 1366 unittest(range.bus_addr == 0x0, 1367 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1368 range.pci_addr, np); 1369 } else { 1370 unittest(range.flags == 0xf00bee, 1371 "for_each_of_range wrong flags on node %pOF flags=%x\n", 1372 np, range.flags); 1373 unittest(range.size == 0x200000, 1374 "for_each_of_range wrong size on node %pOF size=%llx\n", 1375 np, range.size); 1376 unittest(range.cpu_addr == 0xb0000000, 1377 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1378 range.cpu_addr, np); 1379 unittest(range.bus_addr == 0x100000000, 1380 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1381 range.pci_addr, np); 1382 } 1383 i++; 1384 } 1385 1386 of_node_put(np); 1387 } 1388 1389 static void __init of_unittest_reg(void) 1390 { 1391 struct device_node *np; 1392 struct resource res; 1393 int ret; 1394 u64 addr, size; 1395 1396 np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000"); 1397 if (!np) { 1398 pr_err("missing testcase data\n"); 1399 return; 1400 } 1401 1402 ret = of_property_read_reg(np, 0, &addr, &size); 1403 unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n", 1404 np, ret); 1405 unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n", 1406 np, addr); 1407 1408 of_node_put(np); 1409 1410 np = of_find_node_by_path("/testcase-data/platform-tests-2/node/test-device@100"); 1411 if (!np) { 1412 pr_err("missing testcase data\n"); 1413 return; 1414 } 1415 1416 ret = of_address_to_resource(np, 0, &res); 1417 unittest(ret == -EINVAL, "of_address_to_resource(%pOF) expected error on untranslatable address\n", 1418 np); 1419 1420 of_node_put(np); 1421 1422 } 1423 1424 struct of_unittest_expected_res { 1425 int index; 1426 struct resource res; 1427 }; 1428 1429 static void __init of_unittest_check_addr(const char *node_path, 1430 const struct of_unittest_expected_res *tab_exp, 1431 unsigned int tab_exp_count) 1432 { 1433 const struct of_unittest_expected_res *expected; 1434 struct device_node *np; 1435 struct resource res; 1436 unsigned int count; 1437 int ret; 1438 1439 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 1440 return; 1441 1442 np = of_find_node_by_path(node_path); 1443 if (!np) { 1444 pr_err("missing testcase data (%s)\n", node_path); 1445 return; 1446 } 1447 1448 expected = tab_exp; 1449 count = tab_exp_count; 1450 while (count--) { 1451 ret = of_address_to_resource(np, expected->index, &res); 1452 unittest(!ret, "of_address_to_resource(%pOF, %d) returned error %d\n", 1453 np, expected->index, ret); 1454 unittest(resource_type(&res) == resource_type(&expected->res) && 1455 res.start == expected->res.start && 1456 resource_size(&res) == resource_size(&expected->res), 1457 "of_address_to_resource(%pOF, %d) wrong resource %pR, expected %pR\n", 1458 np, expected->index, &res, &expected->res); 1459 expected++; 1460 } 1461 1462 of_node_put(np); 1463 } 1464 1465 static const struct of_unittest_expected_res of_unittest_reg_2cell_expected_res[] = { 1466 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) }, 1467 {.index = 1, .res = DEFINE_RES_MEM(0xa0a02000, 0x100) }, 1468 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) }, 1469 {.index = 3, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) }, 1470 }; 1471 1472 static const struct of_unittest_expected_res of_unittest_reg_3cell_expected_res[] = { 1473 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) }, 1474 {.index = 1, .res = DEFINE_RES_MEM(0xa0b02000, 0x100) }, 1475 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) }, 1476 {.index = 3, .res = DEFINE_RES_MEM(0xc0c09000, 0x100) }, 1477 {.index = 4, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) }, 1478 }; 1479 1480 static const struct of_unittest_expected_res of_unittest_reg_pci_expected_res[] = { 1481 {.index = 0, .res = DEFINE_RES_MEM(0xe8001000, 0x1000) }, 1482 {.index = 1, .res = DEFINE_RES_MEM(0xea002000, 0x2000) }, 1483 }; 1484 1485 static void __init of_unittest_translate_addr(void) 1486 { 1487 of_unittest_check_addr("/testcase-data/address-tests2/bus-2cell@10000000/device@100000", 1488 of_unittest_reg_2cell_expected_res, 1489 ARRAY_SIZE(of_unittest_reg_2cell_expected_res)); 1490 1491 of_unittest_check_addr("/testcase-data/address-tests2/bus-3cell@20000000/local-bus@100000/device@f1001000", 1492 of_unittest_reg_3cell_expected_res, 1493 ARRAY_SIZE(of_unittest_reg_3cell_expected_res)); 1494 1495 of_unittest_check_addr("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0/dev@e0000000", 1496 of_unittest_reg_pci_expected_res, 1497 ARRAY_SIZE(of_unittest_reg_pci_expected_res)); 1498 } 1499 1500 static void __init of_unittest_parse_interrupts(void) 1501 { 1502 struct device_node *np; 1503 struct of_phandle_args args; 1504 int i, rc; 1505 1506 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1507 return; 1508 1509 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 1510 if (!np) { 1511 pr_err("missing testcase data\n"); 1512 return; 1513 } 1514 1515 for (i = 0; i < 4; i++) { 1516 bool passed = true; 1517 1518 memset(&args, 0, sizeof(args)); 1519 rc = of_irq_parse_one(np, i, &args); 1520 1521 passed &= !rc; 1522 passed &= (args.args_count == 1); 1523 passed &= (args.args[0] == (i + 1)); 1524 1525 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1526 i, args.np, rc); 1527 } 1528 of_node_put(np); 1529 1530 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 1531 if (!np) { 1532 pr_err("missing testcase data\n"); 1533 return; 1534 } 1535 1536 for (i = 0; i < 4; i++) { 1537 bool passed = true; 1538 1539 memset(&args, 0, sizeof(args)); 1540 rc = of_irq_parse_one(np, i, &args); 1541 1542 /* Test the values from tests-phandle.dtsi */ 1543 switch (i) { 1544 case 0: 1545 passed &= !rc; 1546 passed &= (args.args_count == 1); 1547 passed &= (args.args[0] == 9); 1548 break; 1549 case 1: 1550 passed &= !rc; 1551 passed &= (args.args_count == 3); 1552 passed &= (args.args[0] == 10); 1553 passed &= (args.args[1] == 11); 1554 passed &= (args.args[2] == 12); 1555 break; 1556 case 2: 1557 passed &= !rc; 1558 passed &= (args.args_count == 2); 1559 passed &= (args.args[0] == 13); 1560 passed &= (args.args[1] == 14); 1561 break; 1562 case 3: 1563 passed &= !rc; 1564 passed &= (args.args_count == 2); 1565 passed &= (args.args[0] == 15); 1566 passed &= (args.args[1] == 16); 1567 break; 1568 default: 1569 passed = false; 1570 } 1571 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1572 i, args.np, rc); 1573 } 1574 of_node_put(np); 1575 } 1576 1577 static void __init of_unittest_parse_interrupts_extended(void) 1578 { 1579 struct device_node *np; 1580 struct of_phandle_args args; 1581 int i, rc; 1582 1583 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1584 return; 1585 1586 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1587 if (!np) { 1588 pr_err("missing testcase data\n"); 1589 return; 1590 } 1591 1592 for (i = 0; i < 7; i++) { 1593 bool passed = true; 1594 1595 memset(&args, 0, sizeof(args)); 1596 rc = of_irq_parse_one(np, i, &args); 1597 1598 /* Test the values from tests-phandle.dtsi */ 1599 switch (i) { 1600 case 0: 1601 passed &= !rc; 1602 passed &= (args.args_count == 1); 1603 passed &= (args.args[0] == 1); 1604 break; 1605 case 1: 1606 passed &= !rc; 1607 passed &= (args.args_count == 3); 1608 passed &= (args.args[0] == 2); 1609 passed &= (args.args[1] == 3); 1610 passed &= (args.args[2] == 4); 1611 break; 1612 case 2: 1613 passed &= !rc; 1614 passed &= (args.args_count == 2); 1615 passed &= (args.args[0] == 5); 1616 passed &= (args.args[1] == 6); 1617 break; 1618 case 3: 1619 passed &= !rc; 1620 passed &= (args.args_count == 1); 1621 passed &= (args.args[0] == 9); 1622 break; 1623 case 4: 1624 passed &= !rc; 1625 passed &= (args.args_count == 3); 1626 passed &= (args.args[0] == 10); 1627 passed &= (args.args[1] == 11); 1628 passed &= (args.args[2] == 12); 1629 break; 1630 case 5: 1631 passed &= !rc; 1632 passed &= (args.args_count == 2); 1633 passed &= (args.args[0] == 13); 1634 passed &= (args.args[1] == 14); 1635 break; 1636 case 6: 1637 /* 1638 * Tests child node that is missing property 1639 * #address-cells. See the comments in 1640 * drivers/of/unittest-data/tests-interrupts.dtsi 1641 * nodes intmap1 and interrupts-extended0 1642 */ 1643 passed &= !rc; 1644 passed &= (args.args_count == 1); 1645 passed &= (args.args[0] == 15); 1646 break; 1647 default: 1648 passed = false; 1649 } 1650 1651 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1652 i, args.np, rc); 1653 } 1654 of_node_put(np); 1655 } 1656 1657 static const struct of_device_id match_node_table[] = { 1658 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1659 { .data = "B", .type = "type1", }, /* followed by type alone */ 1660 1661 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1662 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1663 { .data = "Cc", .name = "name2", .type = "type2", }, 1664 1665 { .data = "E", .compatible = "compat3" }, 1666 { .data = "G", .compatible = "compat2", }, 1667 { .data = "H", .compatible = "compat2", .name = "name5", }, 1668 { .data = "I", .compatible = "compat2", .type = "type1", }, 1669 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1670 { .data = "K", .compatible = "compat2", .name = "name9", }, 1671 {} 1672 }; 1673 1674 static struct { 1675 const char *path; 1676 const char *data; 1677 } match_node_tests[] = { 1678 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1679 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1680 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1681 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1682 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1683 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1684 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1685 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1686 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1687 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1688 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1689 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1690 }; 1691 1692 static void __init of_unittest_match_node(void) 1693 { 1694 struct device_node *np; 1695 const struct of_device_id *match; 1696 int i; 1697 1698 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1699 np = of_find_node_by_path(match_node_tests[i].path); 1700 if (!np) { 1701 unittest(0, "missing testcase node %s\n", 1702 match_node_tests[i].path); 1703 continue; 1704 } 1705 1706 match = of_match_node(match_node_table, np); 1707 if (!match) { 1708 unittest(0, "%s didn't match anything\n", 1709 match_node_tests[i].path); 1710 continue; 1711 } 1712 1713 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1714 unittest(0, "%s got wrong match. expected %s, got %s\n", 1715 match_node_tests[i].path, match_node_tests[i].data, 1716 (const char *)match->data); 1717 continue; 1718 } 1719 unittest(1, "passed"); 1720 } 1721 } 1722 1723 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2); 1724 static const struct platform_device_info test_bus_info = { 1725 .name = "unittest-bus", 1726 }; 1727 static void __init of_unittest_platform_populate(void) 1728 { 1729 int irq, rc; 1730 struct device_node *np, *child, *grandchild; 1731 struct platform_device *pdev, *test_bus; 1732 const struct of_device_id match[] = { 1733 { .compatible = "test-device", }, 1734 {} 1735 }; 1736 1737 np = of_find_node_by_path("/testcase-data"); 1738 of_platform_default_populate(np, NULL, NULL); 1739 1740 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1741 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1742 pdev = of_find_device_by_node(np); 1743 unittest(pdev, "device 1 creation failed\n"); 1744 1745 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1746 irq = platform_get_irq(pdev, 0); 1747 unittest(irq == -EPROBE_DEFER, 1748 "device deferred probe failed - %d\n", irq); 1749 1750 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1751 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1752 pdev = of_find_device_by_node(np); 1753 unittest(pdev, "device 2 creation failed\n"); 1754 1755 EXPECT_BEGIN(KERN_INFO, 1756 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found"); 1757 1758 irq = platform_get_irq(pdev, 0); 1759 1760 EXPECT_END(KERN_INFO, 1761 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found"); 1762 1763 unittest(irq < 0 && irq != -EPROBE_DEFER, 1764 "device parsing error failed - %d\n", irq); 1765 } 1766 1767 np = of_find_node_by_path("/testcase-data/platform-tests"); 1768 unittest(np, "No testcase data in device tree\n"); 1769 if (!np) 1770 return; 1771 1772 test_bus = platform_device_register_full(&test_bus_info); 1773 rc = PTR_ERR_OR_ZERO(test_bus); 1774 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1775 if (rc) { 1776 of_node_put(np); 1777 return; 1778 } 1779 test_bus->dev.of_node = np; 1780 1781 /* 1782 * Add a dummy resource to the test bus node after it is 1783 * registered to catch problems with un-inserted resources. The 1784 * DT code doesn't insert the resources, and it has caused the 1785 * kernel to oops in the past. This makes sure the same bug 1786 * doesn't crop up again. 1787 */ 1788 platform_device_add_resources(test_bus, &test_bus_res, 1); 1789 1790 of_platform_populate(np, match, NULL, &test_bus->dev); 1791 for_each_child_of_node(np, child) { 1792 for_each_child_of_node(child, grandchild) { 1793 pdev = of_find_device_by_node(grandchild); 1794 unittest(pdev, 1795 "Could not create device for node '%pOFn'\n", 1796 grandchild); 1797 platform_device_put(pdev); 1798 } 1799 } 1800 1801 of_platform_depopulate(&test_bus->dev); 1802 for_each_child_of_node(np, child) { 1803 for_each_child_of_node(child, grandchild) 1804 unittest(!of_find_device_by_node(grandchild), 1805 "device didn't get destroyed '%pOFn'\n", 1806 grandchild); 1807 } 1808 1809 platform_device_unregister(test_bus); 1810 of_node_put(np); 1811 } 1812 1813 /** 1814 * update_node_properties - adds the properties 1815 * of np into dup node (present in live tree) and 1816 * updates parent of children of np to dup. 1817 * 1818 * @np: node whose properties are being added to the live tree 1819 * @dup: node present in live tree to be updated 1820 */ 1821 static void update_node_properties(struct device_node *np, 1822 struct device_node *dup) 1823 { 1824 struct property *prop; 1825 struct property *save_next; 1826 struct device_node *child; 1827 int ret; 1828 1829 for_each_child_of_node(np, child) 1830 child->parent = dup; 1831 1832 /* 1833 * "unittest internal error: unable to add testdata property" 1834 * 1835 * If this message reports a property in node '/__symbols__' then 1836 * the respective unittest overlay contains a label that has the 1837 * same name as a label in the live devicetree. The label will 1838 * be in the live devicetree only if the devicetree source was 1839 * compiled with the '-@' option. If you encounter this error, 1840 * please consider renaming __all__ of the labels in the unittest 1841 * overlay dts files with an odd prefix that is unlikely to be 1842 * used in a real devicetree. 1843 */ 1844 1845 /* 1846 * open code for_each_property_of_node() because of_add_property() 1847 * sets prop->next to NULL 1848 */ 1849 for (prop = np->properties; prop != NULL; prop = save_next) { 1850 save_next = prop->next; 1851 ret = of_add_property(dup, prop); 1852 if (ret) { 1853 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1854 continue; 1855 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1856 np, prop->name); 1857 } 1858 } 1859 } 1860 1861 /** 1862 * attach_node_and_children - attaches nodes 1863 * and its children to live tree. 1864 * CAUTION: misleading function name - if node @np already exists in 1865 * the live tree then children of @np are *not* attached to the live 1866 * tree. This works for the current test devicetree nodes because such 1867 * nodes do not have child nodes. 1868 * 1869 * @np: Node to attach to live tree 1870 */ 1871 static void attach_node_and_children(struct device_node *np) 1872 { 1873 struct device_node *next, *dup, *child; 1874 unsigned long flags; 1875 const char *full_name; 1876 1877 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1878 if (!full_name) 1879 return; 1880 1881 if (!strcmp(full_name, "/__local_fixups__") || 1882 !strcmp(full_name, "/__fixups__")) { 1883 kfree(full_name); 1884 return; 1885 } 1886 1887 dup = of_find_node_by_path(full_name); 1888 kfree(full_name); 1889 if (dup) { 1890 update_node_properties(np, dup); 1891 return; 1892 } 1893 1894 child = np->child; 1895 np->child = NULL; 1896 1897 mutex_lock(&of_mutex); 1898 raw_spin_lock_irqsave(&devtree_lock, flags); 1899 np->sibling = np->parent->child; 1900 np->parent->child = np; 1901 of_node_clear_flag(np, OF_DETACHED); 1902 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1903 1904 __of_attach_node_sysfs(np); 1905 mutex_unlock(&of_mutex); 1906 1907 while (child) { 1908 next = child->sibling; 1909 attach_node_and_children(child); 1910 child = next; 1911 } 1912 } 1913 1914 /** 1915 * unittest_data_add - Reads, copies data from 1916 * linked tree and attaches it to the live tree 1917 */ 1918 static int __init unittest_data_add(void) 1919 { 1920 void *unittest_data; 1921 void *unittest_data_align; 1922 struct device_node *unittest_data_node = NULL, *np; 1923 /* 1924 * __dtbo_testcases_begin[] and __dtbo_testcases_end[] are magically 1925 * created by cmd_wrap_S_dtbo in scripts/Makefile.dtbs 1926 */ 1927 extern uint8_t __dtbo_testcases_begin[]; 1928 extern uint8_t __dtbo_testcases_end[]; 1929 const int size = __dtbo_testcases_end - __dtbo_testcases_begin; 1930 int rc; 1931 void *ret; 1932 1933 if (!size) { 1934 pr_warn("%s: testcases is empty\n", __func__); 1935 return -ENODATA; 1936 } 1937 1938 /* creating copy */ 1939 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL); 1940 if (!unittest_data) 1941 return -ENOMEM; 1942 1943 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE); 1944 memcpy(unittest_data_align, __dtbo_testcases_begin, size); 1945 1946 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node); 1947 if (!ret) { 1948 pr_warn("%s: unflatten testcases tree failed\n", __func__); 1949 kfree(unittest_data); 1950 return -ENODATA; 1951 } 1952 if (!unittest_data_node) { 1953 pr_warn("%s: testcases tree is empty\n", __func__); 1954 kfree(unittest_data); 1955 return -ENODATA; 1956 } 1957 1958 /* 1959 * This lock normally encloses of_resolve_phandles() 1960 */ 1961 of_overlay_mutex_lock(); 1962 1963 rc = of_resolve_phandles(unittest_data_node); 1964 if (rc) { 1965 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1966 of_overlay_mutex_unlock(); 1967 return -EINVAL; 1968 } 1969 1970 /* attach the sub-tree to live tree */ 1971 if (!of_root) { 1972 pr_warn("%s: no live tree to attach sub-tree\n", __func__); 1973 kfree(unittest_data); 1974 return -ENODEV; 1975 } 1976 1977 EXPECT_BEGIN(KERN_INFO, 1978 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1979 1980 np = unittest_data_node->child; 1981 while (np) { 1982 struct device_node *next = np->sibling; 1983 1984 np->parent = of_root; 1985 /* this will clear OF_DETACHED in np and children */ 1986 attach_node_and_children(np); 1987 np = next; 1988 } 1989 1990 EXPECT_END(KERN_INFO, 1991 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1992 1993 of_overlay_mutex_unlock(); 1994 1995 return 0; 1996 } 1997 1998 #ifdef CONFIG_OF_OVERLAY 1999 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id); 2000 2001 static int unittest_probe(struct platform_device *pdev) 2002 { 2003 struct device *dev = &pdev->dev; 2004 struct device_node *np = dev->of_node; 2005 2006 if (np == NULL) { 2007 dev_err(dev, "No OF data for device\n"); 2008 return -EINVAL; 2009 2010 } 2011 2012 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2013 2014 of_platform_populate(np, NULL, NULL, &pdev->dev); 2015 2016 return 0; 2017 } 2018 2019 static void unittest_remove(struct platform_device *pdev) 2020 { 2021 struct device *dev = &pdev->dev; 2022 struct device_node *np = dev->of_node; 2023 2024 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2025 } 2026 2027 static const struct of_device_id unittest_match[] = { 2028 { .compatible = "unittest", }, 2029 {}, 2030 }; 2031 2032 static struct platform_driver unittest_driver = { 2033 .probe = unittest_probe, 2034 .remove = unittest_remove, 2035 .driver = { 2036 .name = "unittest", 2037 .of_match_table = unittest_match, 2038 }, 2039 }; 2040 2041 /* get the platform device instantiated at the path */ 2042 static struct platform_device *of_path_to_platform_device(const char *path) 2043 { 2044 struct device_node *np; 2045 struct platform_device *pdev; 2046 2047 np = of_find_node_by_path(path); 2048 if (np == NULL) 2049 return NULL; 2050 2051 pdev = of_find_device_by_node(np); 2052 of_node_put(np); 2053 2054 return pdev; 2055 } 2056 2057 /* find out if a platform device exists at that path */ 2058 static int of_path_platform_device_exists(const char *path) 2059 { 2060 struct platform_device *pdev; 2061 2062 pdev = of_path_to_platform_device(path); 2063 platform_device_put(pdev); 2064 return pdev != NULL; 2065 } 2066 2067 #ifdef CONFIG_OF_GPIO 2068 2069 struct unittest_gpio_dev { 2070 struct gpio_chip chip; 2071 }; 2072 2073 static int unittest_gpio_chip_request_count; 2074 static int unittest_gpio_probe_count; 2075 static int unittest_gpio_probe_pass_count; 2076 2077 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 2078 { 2079 unittest_gpio_chip_request_count++; 2080 2081 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 2082 unittest_gpio_chip_request_count); 2083 return 0; 2084 } 2085 2086 static int unittest_gpio_probe(struct platform_device *pdev) 2087 { 2088 struct unittest_gpio_dev *devptr; 2089 int ret; 2090 2091 unittest_gpio_probe_count++; 2092 2093 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 2094 if (!devptr) 2095 return -ENOMEM; 2096 2097 platform_set_drvdata(pdev, devptr); 2098 2099 devptr->chip.fwnode = dev_fwnode(&pdev->dev); 2100 devptr->chip.label = "of-unittest-gpio"; 2101 devptr->chip.base = -1; /* dynamic allocation */ 2102 devptr->chip.ngpio = 5; 2103 devptr->chip.request = unittest_gpio_chip_request; 2104 2105 ret = gpiochip_add_data(&devptr->chip, NULL); 2106 2107 unittest(!ret, 2108 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret); 2109 2110 if (!ret) 2111 unittest_gpio_probe_pass_count++; 2112 return ret; 2113 } 2114 2115 static void unittest_gpio_remove(struct platform_device *pdev) 2116 { 2117 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev); 2118 struct device *dev = &pdev->dev; 2119 2120 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode); 2121 2122 if (devptr->chip.base != -1) 2123 gpiochip_remove(&devptr->chip); 2124 2125 kfree(devptr); 2126 } 2127 2128 static const struct of_device_id unittest_gpio_id[] = { 2129 { .compatible = "unittest-gpio", }, 2130 {} 2131 }; 2132 2133 static struct platform_driver unittest_gpio_driver = { 2134 .probe = unittest_gpio_probe, 2135 .remove = unittest_gpio_remove, 2136 .driver = { 2137 .name = "unittest-gpio", 2138 .of_match_table = unittest_gpio_id, 2139 }, 2140 }; 2141 2142 static void __init of_unittest_overlay_gpio(void) 2143 { 2144 int chip_request_count; 2145 int probe_pass_count; 2146 int ret; 2147 2148 /* 2149 * tests: apply overlays before registering driver 2150 * Similar to installing a driver as a module, the 2151 * driver is registered after applying the overlays. 2152 * 2153 * The overlays are applied by overlay_data_apply() 2154 * instead of of_unittest_apply_overlay() so that they 2155 * will not be tracked. Thus they will not be removed 2156 * by of_unittest_remove_tracked_overlays(). 2157 * 2158 * - apply overlay_gpio_01 2159 * - apply overlay_gpio_02a 2160 * - apply overlay_gpio_02b 2161 * - register driver 2162 * 2163 * register driver will result in 2164 * - probe and processing gpio hog for overlay_gpio_01 2165 * - probe for overlay_gpio_02a 2166 * - processing gpio for overlay_gpio_02b 2167 */ 2168 2169 probe_pass_count = unittest_gpio_probe_pass_count; 2170 chip_request_count = unittest_gpio_chip_request_count; 2171 2172 /* 2173 * overlay_gpio_01 contains gpio node and child gpio hog node 2174 * overlay_gpio_02a contains gpio node 2175 * overlay_gpio_02b contains child gpio hog node 2176 */ 2177 2178 unittest(overlay_data_apply("overlay_gpio_01", NULL), 2179 "Adding overlay 'overlay_gpio_01' failed\n"); 2180 2181 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 2182 "Adding overlay 'overlay_gpio_02a' failed\n"); 2183 2184 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 2185 "Adding overlay 'overlay_gpio_02b' failed\n"); 2186 2187 ret = platform_driver_register(&unittest_gpio_driver); 2188 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 2189 return; 2190 2191 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 2192 "unittest_gpio_probe() failed or not called\n"); 2193 2194 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 2195 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2196 unittest_gpio_chip_request_count - chip_request_count); 2197 2198 /* 2199 * tests: apply overlays after registering driver 2200 * 2201 * Similar to a driver built-in to the kernel, the 2202 * driver is registered before applying the overlays. 2203 * 2204 * overlay_gpio_03 contains gpio node and child gpio hog node 2205 * 2206 * - apply overlay_gpio_03 2207 * 2208 * apply overlay will result in 2209 * - probe and processing gpio hog. 2210 */ 2211 2212 probe_pass_count = unittest_gpio_probe_pass_count; 2213 chip_request_count = unittest_gpio_chip_request_count; 2214 2215 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 2216 2217 unittest(overlay_data_apply("overlay_gpio_03", NULL), 2218 "Adding overlay 'overlay_gpio_03' failed\n"); 2219 2220 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2221 "unittest_gpio_probe() failed or not called\n"); 2222 2223 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2224 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2225 unittest_gpio_chip_request_count - chip_request_count); 2226 2227 /* 2228 * overlay_gpio_04a contains gpio node 2229 * 2230 * - apply overlay_gpio_04a 2231 * 2232 * apply the overlay will result in 2233 * - probe for overlay_gpio_04a 2234 */ 2235 2236 probe_pass_count = unittest_gpio_probe_pass_count; 2237 chip_request_count = unittest_gpio_chip_request_count; 2238 2239 /* overlay_gpio_04a contains gpio node */ 2240 2241 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 2242 "Adding overlay 'overlay_gpio_04a' failed\n"); 2243 2244 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2245 "unittest_gpio_probe() failed or not called\n"); 2246 2247 /* 2248 * overlay_gpio_04b contains child gpio hog node 2249 * 2250 * - apply overlay_gpio_04b 2251 * 2252 * apply the overlay will result in 2253 * - processing gpio for overlay_gpio_04b 2254 */ 2255 2256 /* overlay_gpio_04b contains child gpio hog node */ 2257 2258 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 2259 "Adding overlay 'overlay_gpio_04b' failed\n"); 2260 2261 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2262 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2263 unittest_gpio_chip_request_count - chip_request_count); 2264 } 2265 2266 #else 2267 2268 static void __init of_unittest_overlay_gpio(void) 2269 { 2270 /* skip tests */ 2271 } 2272 2273 #endif 2274 2275 #if IS_BUILTIN(CONFIG_I2C) 2276 2277 /* get the i2c client device instantiated at the path */ 2278 static struct i2c_client *of_path_to_i2c_client(const char *path) 2279 { 2280 struct device_node *np; 2281 struct i2c_client *client; 2282 2283 np = of_find_node_by_path(path); 2284 if (np == NULL) 2285 return NULL; 2286 2287 client = of_find_i2c_device_by_node(np); 2288 of_node_put(np); 2289 2290 return client; 2291 } 2292 2293 /* find out if a i2c client device exists at that path */ 2294 static int of_path_i2c_client_exists(const char *path) 2295 { 2296 struct i2c_client *client; 2297 2298 client = of_path_to_i2c_client(path); 2299 if (client) 2300 put_device(&client->dev); 2301 return client != NULL; 2302 } 2303 #else 2304 static int of_path_i2c_client_exists(const char *path) 2305 { 2306 return 0; 2307 } 2308 #endif 2309 2310 enum overlay_type { 2311 PDEV_OVERLAY, 2312 I2C_OVERLAY 2313 }; 2314 2315 static int of_path_device_type_exists(const char *path, 2316 enum overlay_type ovtype) 2317 { 2318 switch (ovtype) { 2319 case PDEV_OVERLAY: 2320 return of_path_platform_device_exists(path); 2321 case I2C_OVERLAY: 2322 return of_path_i2c_client_exists(path); 2323 } 2324 return 0; 2325 } 2326 2327 static const char *unittest_path(int nr, enum overlay_type ovtype) 2328 { 2329 const char *base; 2330 static char buf[256]; 2331 2332 switch (ovtype) { 2333 case PDEV_OVERLAY: 2334 base = "/testcase-data/overlay-node/test-bus"; 2335 break; 2336 case I2C_OVERLAY: 2337 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 2338 break; 2339 default: 2340 buf[0] = '\0'; 2341 return buf; 2342 } 2343 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 2344 buf[sizeof(buf) - 1] = '\0'; 2345 return buf; 2346 } 2347 2348 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 2349 { 2350 const char *path; 2351 2352 path = unittest_path(unittest_nr, ovtype); 2353 2354 switch (ovtype) { 2355 case PDEV_OVERLAY: 2356 return of_path_platform_device_exists(path); 2357 case I2C_OVERLAY: 2358 return of_path_i2c_client_exists(path); 2359 } 2360 return 0; 2361 } 2362 2363 static const char *overlay_name_from_nr(int nr) 2364 { 2365 static char buf[256]; 2366 2367 snprintf(buf, sizeof(buf) - 1, 2368 "overlay_%d", nr); 2369 buf[sizeof(buf) - 1] = '\0'; 2370 2371 return buf; 2372 } 2373 2374 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 2375 2376 #define MAX_TRACK_OVCS_IDS 256 2377 2378 static int track_ovcs_id[MAX_TRACK_OVCS_IDS]; 2379 static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS]; 2380 static int track_ovcs_id_cnt; 2381 2382 static void of_unittest_track_overlay(int ovcs_id, int overlay_nr) 2383 { 2384 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS)) 2385 return; 2386 2387 track_ovcs_id[track_ovcs_id_cnt] = ovcs_id; 2388 track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr; 2389 track_ovcs_id_cnt++; 2390 } 2391 2392 static void of_unittest_untrack_overlay(int ovcs_id) 2393 { 2394 if (WARN_ON(track_ovcs_id_cnt < 1)) 2395 return; 2396 2397 track_ovcs_id_cnt--; 2398 2399 /* If out of synch then test is broken. Do not try to recover. */ 2400 WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id); 2401 } 2402 2403 static void of_unittest_remove_tracked_overlays(void) 2404 { 2405 int ret, ovcs_id, overlay_nr, save_ovcs_id; 2406 const char *overlay_name; 2407 2408 while (track_ovcs_id_cnt > 0) { 2409 2410 ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1]; 2411 overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1]; 2412 save_ovcs_id = ovcs_id; 2413 ret = of_overlay_remove(&ovcs_id); 2414 if (ret == -ENODEV) { 2415 overlay_name = overlay_name_from_nr(overlay_nr); 2416 pr_warn("%s: of_overlay_remove() for overlay \"%s\" failed, ret = %d\n", 2417 __func__, overlay_name, ret); 2418 } 2419 of_unittest_untrack_overlay(save_ovcs_id); 2420 } 2421 2422 } 2423 2424 static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id) 2425 { 2426 /* 2427 * The overlay will be tracked, thus it will be removed 2428 * by of_unittest_remove_tracked_overlays(). 2429 */ 2430 2431 const char *overlay_name; 2432 2433 overlay_name = overlay_name_from_nr(overlay_nr); 2434 2435 if (!overlay_data_apply(overlay_name, ovcs_id)) { 2436 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2437 return -EFAULT; 2438 } 2439 of_unittest_track_overlay(*ovcs_id, overlay_nr); 2440 2441 return 0; 2442 } 2443 2444 static int __init __of_unittest_apply_overlay_check(int overlay_nr, 2445 int unittest_nr, int before, int after, 2446 enum overlay_type ovtype) 2447 { 2448 int ret, ovcs_id; 2449 2450 /* unittest device must be in before state */ 2451 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2452 unittest(0, "%s with device @\"%s\" %s\n", 2453 overlay_name_from_nr(overlay_nr), 2454 unittest_path(unittest_nr, ovtype), 2455 !before ? "enabled" : "disabled"); 2456 return -EINVAL; 2457 } 2458 2459 /* apply the overlay */ 2460 ovcs_id = 0; 2461 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2462 if (ret != 0) { 2463 /* of_unittest_apply_overlay already called unittest() */ 2464 return ret; 2465 } 2466 2467 /* unittest device must be in after state */ 2468 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2469 unittest(0, "%s with device @\"%s\" %s\n", 2470 overlay_name_from_nr(overlay_nr), 2471 unittest_path(unittest_nr, ovtype), 2472 !after ? "enabled" : "disabled"); 2473 return -EINVAL; 2474 } 2475 2476 return ovcs_id; 2477 } 2478 2479 /* apply an overlay while checking before and after states */ 2480 static int __init of_unittest_apply_overlay_check(int overlay_nr, 2481 int unittest_nr, int before, int after, 2482 enum overlay_type ovtype) 2483 { 2484 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, 2485 unittest_nr, before, after, ovtype); 2486 if (ovcs_id < 0) 2487 return ovcs_id; 2488 2489 return 0; 2490 } 2491 2492 /* apply an overlay and then revert it while checking before, after states */ 2493 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2494 int unittest_nr, int before, int after, 2495 enum overlay_type ovtype) 2496 { 2497 int ret, ovcs_id, save_ovcs_id; 2498 2499 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr, 2500 before, after, ovtype); 2501 if (ovcs_id < 0) 2502 return ovcs_id; 2503 2504 /* remove the overlay */ 2505 save_ovcs_id = ovcs_id; 2506 ret = of_overlay_remove(&ovcs_id); 2507 if (ret != 0) { 2508 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2509 overlay_name_from_nr(overlay_nr), 2510 unittest_path(unittest_nr, ovtype)); 2511 return ret; 2512 } 2513 of_unittest_untrack_overlay(save_ovcs_id); 2514 2515 /* unittest device must be again in before state */ 2516 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2517 unittest(0, "%s with device @\"%s\" %s\n", 2518 overlay_name_from_nr(overlay_nr), 2519 unittest_path(unittest_nr, ovtype), 2520 !before ? "enabled" : "disabled"); 2521 return -EINVAL; 2522 } 2523 2524 return 0; 2525 } 2526 2527 /* test activation of device */ 2528 static void __init of_unittest_overlay_0(void) 2529 { 2530 int ret; 2531 2532 EXPECT_BEGIN(KERN_INFO, 2533 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2534 2535 /* device should enable */ 2536 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2537 2538 EXPECT_END(KERN_INFO, 2539 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2540 2541 if (ret) 2542 return; 2543 2544 unittest(1, "overlay test %d passed\n", 0); 2545 } 2546 2547 /* test deactivation of device */ 2548 static void __init of_unittest_overlay_1(void) 2549 { 2550 int ret; 2551 2552 EXPECT_BEGIN(KERN_INFO, 2553 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2554 2555 /* device should disable */ 2556 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2557 2558 EXPECT_END(KERN_INFO, 2559 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2560 2561 if (ret) 2562 return; 2563 2564 unittest(1, "overlay test %d passed\n", 1); 2565 2566 } 2567 2568 /* test activation of device */ 2569 static void __init of_unittest_overlay_2(void) 2570 { 2571 int ret; 2572 2573 EXPECT_BEGIN(KERN_INFO, 2574 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2575 2576 /* device should enable */ 2577 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2578 2579 EXPECT_END(KERN_INFO, 2580 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2581 2582 if (ret) 2583 return; 2584 unittest(1, "overlay test %d passed\n", 2); 2585 } 2586 2587 /* test deactivation of device */ 2588 static void __init of_unittest_overlay_3(void) 2589 { 2590 int ret; 2591 2592 EXPECT_BEGIN(KERN_INFO, 2593 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2594 2595 /* device should disable */ 2596 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2597 2598 EXPECT_END(KERN_INFO, 2599 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2600 2601 if (ret) 2602 return; 2603 2604 unittest(1, "overlay test %d passed\n", 3); 2605 } 2606 2607 /* test activation of a full device node */ 2608 static void __init of_unittest_overlay_4(void) 2609 { 2610 /* device should disable */ 2611 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2612 return; 2613 2614 unittest(1, "overlay test %d passed\n", 4); 2615 } 2616 2617 /* test overlay apply/revert sequence */ 2618 static void __init of_unittest_overlay_5(void) 2619 { 2620 int ret; 2621 2622 EXPECT_BEGIN(KERN_INFO, 2623 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2624 2625 /* device should disable */ 2626 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2627 2628 EXPECT_END(KERN_INFO, 2629 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2630 2631 if (ret) 2632 return; 2633 2634 unittest(1, "overlay test %d passed\n", 5); 2635 } 2636 2637 /* test overlay application in sequence */ 2638 static void __init of_unittest_overlay_6(void) 2639 { 2640 int i, save_ovcs_id[2], ovcs_id; 2641 int overlay_nr = 6, unittest_nr = 6; 2642 int before = 0, after = 1; 2643 const char *overlay_name; 2644 2645 int ret; 2646 2647 /* unittest device must be in before state */ 2648 for (i = 0; i < 2; i++) { 2649 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2650 != before) { 2651 unittest(0, "%s with device @\"%s\" %s\n", 2652 overlay_name_from_nr(overlay_nr + i), 2653 unittest_path(unittest_nr + i, 2654 PDEV_OVERLAY), 2655 !before ? "enabled" : "disabled"); 2656 return; 2657 } 2658 } 2659 2660 /* apply the overlays */ 2661 2662 EXPECT_BEGIN(KERN_INFO, 2663 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2664 2665 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2666 2667 ret = overlay_data_apply(overlay_name, &ovcs_id); 2668 2669 if (!ret) { 2670 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2671 return; 2672 } 2673 save_ovcs_id[0] = ovcs_id; 2674 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2675 2676 EXPECT_END(KERN_INFO, 2677 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2678 2679 EXPECT_BEGIN(KERN_INFO, 2680 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2681 2682 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2683 2684 ret = overlay_data_apply(overlay_name, &ovcs_id); 2685 2686 if (!ret) { 2687 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2688 return; 2689 } 2690 save_ovcs_id[1] = ovcs_id; 2691 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2692 2693 EXPECT_END(KERN_INFO, 2694 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2695 2696 2697 for (i = 0; i < 2; i++) { 2698 /* unittest device must be in after state */ 2699 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2700 != after) { 2701 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2702 overlay_name_from_nr(overlay_nr + i), 2703 unittest_path(unittest_nr + i, 2704 PDEV_OVERLAY), 2705 !after ? "enabled" : "disabled"); 2706 return; 2707 } 2708 } 2709 2710 for (i = 1; i >= 0; i--) { 2711 ovcs_id = save_ovcs_id[i]; 2712 if (of_overlay_remove(&ovcs_id)) { 2713 unittest(0, "%s failed destroy @\"%s\"\n", 2714 overlay_name_from_nr(overlay_nr + i), 2715 unittest_path(unittest_nr + i, 2716 PDEV_OVERLAY)); 2717 return; 2718 } 2719 of_unittest_untrack_overlay(save_ovcs_id[i]); 2720 } 2721 2722 for (i = 0; i < 2; i++) { 2723 /* unittest device must be again in before state */ 2724 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2725 != before) { 2726 unittest(0, "%s with device @\"%s\" %s\n", 2727 overlay_name_from_nr(overlay_nr + i), 2728 unittest_path(unittest_nr + i, 2729 PDEV_OVERLAY), 2730 !before ? "enabled" : "disabled"); 2731 return; 2732 } 2733 } 2734 2735 unittest(1, "overlay test %d passed\n", 6); 2736 2737 } 2738 2739 /* test overlay application in sequence */ 2740 static void __init of_unittest_overlay_8(void) 2741 { 2742 int i, save_ovcs_id[2], ovcs_id; 2743 int overlay_nr = 8, unittest_nr = 8; 2744 const char *overlay_name; 2745 int ret; 2746 2747 /* we don't care about device state in this test */ 2748 2749 EXPECT_BEGIN(KERN_INFO, 2750 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2751 2752 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2753 2754 ret = overlay_data_apply(overlay_name, &ovcs_id); 2755 if (!ret) 2756 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2757 2758 EXPECT_END(KERN_INFO, 2759 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2760 2761 if (!ret) 2762 return; 2763 2764 save_ovcs_id[0] = ovcs_id; 2765 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2766 2767 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2768 2769 EXPECT_BEGIN(KERN_INFO, 2770 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2771 2772 /* apply the overlays */ 2773 ret = overlay_data_apply(overlay_name, &ovcs_id); 2774 2775 EXPECT_END(KERN_INFO, 2776 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2777 2778 if (!ret) { 2779 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2780 return; 2781 } 2782 2783 save_ovcs_id[1] = ovcs_id; 2784 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2785 2786 /* now try to remove first overlay (it should fail) */ 2787 ovcs_id = save_ovcs_id[0]; 2788 2789 EXPECT_BEGIN(KERN_INFO, 2790 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2791 2792 EXPECT_BEGIN(KERN_INFO, 2793 "OF: overlay: overlay #6 is not topmost"); 2794 2795 ret = of_overlay_remove(&ovcs_id); 2796 2797 EXPECT_END(KERN_INFO, 2798 "OF: overlay: overlay #6 is not topmost"); 2799 2800 EXPECT_END(KERN_INFO, 2801 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2802 2803 if (!ret) { 2804 /* 2805 * Should never get here. If we do, expect a lot of 2806 * subsequent tracking and overlay removal related errors. 2807 */ 2808 unittest(0, "%s was destroyed @\"%s\"\n", 2809 overlay_name_from_nr(overlay_nr + 0), 2810 unittest_path(unittest_nr, 2811 PDEV_OVERLAY)); 2812 return; 2813 } 2814 2815 /* removing them in order should work */ 2816 for (i = 1; i >= 0; i--) { 2817 ovcs_id = save_ovcs_id[i]; 2818 if (of_overlay_remove(&ovcs_id)) { 2819 unittest(0, "%s not destroyed @\"%s\"\n", 2820 overlay_name_from_nr(overlay_nr + i), 2821 unittest_path(unittest_nr, 2822 PDEV_OVERLAY)); 2823 return; 2824 } 2825 of_unittest_untrack_overlay(save_ovcs_id[i]); 2826 } 2827 2828 unittest(1, "overlay test %d passed\n", 8); 2829 } 2830 2831 /* test insertion of a bus with parent devices */ 2832 static void __init of_unittest_overlay_10(void) 2833 { 2834 int ret; 2835 char *child_path; 2836 2837 /* device should disable */ 2838 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2839 2840 if (unittest(ret == 0, 2841 "overlay test %d failed; overlay application\n", 10)) 2842 return; 2843 2844 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2845 unittest_path(10, PDEV_OVERLAY)); 2846 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2847 return; 2848 2849 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2850 kfree(child_path); 2851 2852 unittest(ret, "overlay test %d failed; no child device\n", 10); 2853 } 2854 2855 /* test insertion of a bus with parent devices (and revert) */ 2856 static void __init of_unittest_overlay_11(void) 2857 { 2858 int ret; 2859 2860 /* device should disable */ 2861 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2862 PDEV_OVERLAY); 2863 2864 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2865 } 2866 2867 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2868 2869 struct unittest_i2c_bus_data { 2870 struct platform_device *pdev; 2871 struct i2c_adapter adap; 2872 }; 2873 2874 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2875 struct i2c_msg *msgs, int num) 2876 { 2877 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2878 2879 (void)std; 2880 2881 return num; 2882 } 2883 2884 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2885 { 2886 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2887 } 2888 2889 static const struct i2c_algorithm unittest_i2c_algo = { 2890 .master_xfer = unittest_i2c_master_xfer, 2891 .functionality = unittest_i2c_functionality, 2892 }; 2893 2894 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2895 { 2896 struct device *dev = &pdev->dev; 2897 struct device_node *np = dev->of_node; 2898 struct unittest_i2c_bus_data *std; 2899 struct i2c_adapter *adap; 2900 int ret; 2901 2902 if (np == NULL) { 2903 dev_err(dev, "No OF data for device\n"); 2904 return -EINVAL; 2905 2906 } 2907 2908 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2909 2910 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2911 if (!std) 2912 return -ENOMEM; 2913 2914 /* link them together */ 2915 std->pdev = pdev; 2916 platform_set_drvdata(pdev, std); 2917 2918 adap = &std->adap; 2919 i2c_set_adapdata(adap, std); 2920 adap->nr = -1; 2921 strscpy(adap->name, pdev->name, sizeof(adap->name)); 2922 adap->class = I2C_CLASS_DEPRECATED; 2923 adap->algo = &unittest_i2c_algo; 2924 adap->dev.parent = dev; 2925 adap->dev.of_node = dev->of_node; 2926 adap->timeout = 5 * HZ; 2927 adap->retries = 3; 2928 2929 ret = i2c_add_numbered_adapter(adap); 2930 if (ret != 0) { 2931 dev_err(dev, "Failed to add I2C adapter\n"); 2932 return ret; 2933 } 2934 2935 return 0; 2936 } 2937 2938 static void unittest_i2c_bus_remove(struct platform_device *pdev) 2939 { 2940 struct device *dev = &pdev->dev; 2941 struct device_node *np = dev->of_node; 2942 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2943 2944 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2945 i2c_del_adapter(&std->adap); 2946 } 2947 2948 static const struct of_device_id unittest_i2c_bus_match[] = { 2949 { .compatible = "unittest-i2c-bus", }, 2950 {}, 2951 }; 2952 2953 static struct platform_driver unittest_i2c_bus_driver = { 2954 .probe = unittest_i2c_bus_probe, 2955 .remove = unittest_i2c_bus_remove, 2956 .driver = { 2957 .name = "unittest-i2c-bus", 2958 .of_match_table = unittest_i2c_bus_match, 2959 }, 2960 }; 2961 2962 static int unittest_i2c_dev_probe(struct i2c_client *client) 2963 { 2964 struct device *dev = &client->dev; 2965 struct device_node *np = client->dev.of_node; 2966 2967 if (!np) { 2968 dev_err(dev, "No OF node\n"); 2969 return -EINVAL; 2970 } 2971 2972 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2973 2974 return 0; 2975 }; 2976 2977 static void unittest_i2c_dev_remove(struct i2c_client *client) 2978 { 2979 struct device *dev = &client->dev; 2980 struct device_node *np = client->dev.of_node; 2981 2982 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2983 } 2984 2985 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2986 { .name = "unittest-i2c-dev" }, 2987 { } 2988 }; 2989 2990 static struct i2c_driver unittest_i2c_dev_driver = { 2991 .driver = { 2992 .name = "unittest-i2c-dev", 2993 }, 2994 .probe = unittest_i2c_dev_probe, 2995 .remove = unittest_i2c_dev_remove, 2996 .id_table = unittest_i2c_dev_id, 2997 }; 2998 2999 #if IS_BUILTIN(CONFIG_I2C_MUX) 3000 3001 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 3002 { 3003 return 0; 3004 } 3005 3006 static int unittest_i2c_mux_probe(struct i2c_client *client) 3007 { 3008 int i, nchans; 3009 struct device *dev = &client->dev; 3010 struct i2c_adapter *adap = client->adapter; 3011 struct device_node *np = client->dev.of_node, *child; 3012 struct i2c_mux_core *muxc; 3013 u32 reg, max_reg; 3014 3015 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3016 3017 if (!np) { 3018 dev_err(dev, "No OF node\n"); 3019 return -EINVAL; 3020 } 3021 3022 max_reg = (u32)-1; 3023 for_each_child_of_node(np, child) { 3024 if (of_property_read_u32(child, "reg", ®)) 3025 continue; 3026 if (max_reg == (u32)-1 || reg > max_reg) 3027 max_reg = reg; 3028 } 3029 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 3030 if (nchans == 0) { 3031 dev_err(dev, "No channels\n"); 3032 return -EINVAL; 3033 } 3034 3035 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 3036 unittest_i2c_mux_select_chan, NULL); 3037 if (!muxc) 3038 return -ENOMEM; 3039 for (i = 0; i < nchans; i++) { 3040 if (i2c_mux_add_adapter(muxc, 0, i)) { 3041 dev_err(dev, "Failed to register mux #%d\n", i); 3042 i2c_mux_del_adapters(muxc); 3043 return -ENODEV; 3044 } 3045 } 3046 3047 i2c_set_clientdata(client, muxc); 3048 3049 return 0; 3050 }; 3051 3052 static void unittest_i2c_mux_remove(struct i2c_client *client) 3053 { 3054 struct device *dev = &client->dev; 3055 struct device_node *np = client->dev.of_node; 3056 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 3057 3058 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3059 i2c_mux_del_adapters(muxc); 3060 } 3061 3062 static const struct i2c_device_id unittest_i2c_mux_id[] = { 3063 { .name = "unittest-i2c-mux" }, 3064 { } 3065 }; 3066 3067 static struct i2c_driver unittest_i2c_mux_driver = { 3068 .driver = { 3069 .name = "unittest-i2c-mux", 3070 }, 3071 .probe = unittest_i2c_mux_probe, 3072 .remove = unittest_i2c_mux_remove, 3073 .id_table = unittest_i2c_mux_id, 3074 }; 3075 3076 #endif 3077 3078 static int of_unittest_overlay_i2c_init(void) 3079 { 3080 int ret; 3081 3082 ret = i2c_add_driver(&unittest_i2c_dev_driver); 3083 if (unittest(ret == 0, 3084 "could not register unittest i2c device driver\n")) 3085 return ret; 3086 3087 ret = platform_driver_register(&unittest_i2c_bus_driver); 3088 3089 if (unittest(ret == 0, 3090 "could not register unittest i2c bus driver\n")) 3091 return ret; 3092 3093 #if IS_BUILTIN(CONFIG_I2C_MUX) 3094 3095 EXPECT_BEGIN(KERN_INFO, 3096 "i2c i2c-1: Added multiplexed i2c bus 2"); 3097 3098 ret = i2c_add_driver(&unittest_i2c_mux_driver); 3099 3100 EXPECT_END(KERN_INFO, 3101 "i2c i2c-1: Added multiplexed i2c bus 2"); 3102 3103 if (unittest(ret == 0, 3104 "could not register unittest i2c mux driver\n")) 3105 return ret; 3106 #endif 3107 3108 return 0; 3109 } 3110 3111 static void of_unittest_overlay_i2c_cleanup(void) 3112 { 3113 #if IS_BUILTIN(CONFIG_I2C_MUX) 3114 i2c_del_driver(&unittest_i2c_mux_driver); 3115 #endif 3116 platform_driver_unregister(&unittest_i2c_bus_driver); 3117 i2c_del_driver(&unittest_i2c_dev_driver); 3118 } 3119 3120 static void __init of_unittest_overlay_i2c_12(void) 3121 { 3122 int ret; 3123 3124 /* device should enable */ 3125 EXPECT_BEGIN(KERN_INFO, 3126 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3127 3128 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 3129 3130 EXPECT_END(KERN_INFO, 3131 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3132 3133 if (ret) 3134 return; 3135 3136 unittest(1, "overlay test %d passed\n", 12); 3137 } 3138 3139 /* test deactivation of device */ 3140 static void __init of_unittest_overlay_i2c_13(void) 3141 { 3142 int ret; 3143 3144 EXPECT_BEGIN(KERN_INFO, 3145 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3146 3147 /* device should disable */ 3148 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 3149 3150 EXPECT_END(KERN_INFO, 3151 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3152 3153 if (ret) 3154 return; 3155 3156 unittest(1, "overlay test %d passed\n", 13); 3157 } 3158 3159 /* just check for i2c mux existence */ 3160 static void of_unittest_overlay_i2c_14(void) 3161 { 3162 } 3163 3164 static void __init of_unittest_overlay_i2c_15(void) 3165 { 3166 int ret; 3167 3168 /* device should enable */ 3169 EXPECT_BEGIN(KERN_INFO, 3170 "i2c i2c-1: Added multiplexed i2c bus 3"); 3171 3172 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 3173 3174 EXPECT_END(KERN_INFO, 3175 "i2c i2c-1: Added multiplexed i2c bus 3"); 3176 3177 if (ret) 3178 return; 3179 3180 unittest(1, "overlay test %d passed\n", 15); 3181 } 3182 3183 #else 3184 3185 static inline void of_unittest_overlay_i2c_14(void) { } 3186 static inline void of_unittest_overlay_i2c_15(void) { } 3187 3188 #endif 3189 3190 static int of_notify(struct notifier_block *nb, unsigned long action, 3191 void *arg) 3192 { 3193 struct of_overlay_notify_data *nd = arg; 3194 struct device_node *found; 3195 int ret; 3196 3197 /* 3198 * For overlay_16 .. overlay_19, check that returning an error 3199 * works for each of the actions by setting an arbitrary return 3200 * error number that matches the test number. e.g. for unittest16, 3201 * ret = -EBUSY which is -16. 3202 * 3203 * OVERLAY_INFO() for the overlays is declared to expect the same 3204 * error number, so overlay_data_apply() will return no error. 3205 * 3206 * overlay_20 will return NOTIFY_DONE 3207 */ 3208 3209 ret = 0; 3210 of_node_get(nd->overlay); 3211 3212 switch (action) { 3213 3214 case OF_OVERLAY_PRE_APPLY: 3215 found = of_find_node_by_name(nd->overlay, "test-unittest16"); 3216 if (found) { 3217 of_node_put(found); 3218 ret = -EBUSY; 3219 } 3220 break; 3221 3222 case OF_OVERLAY_POST_APPLY: 3223 found = of_find_node_by_name(nd->overlay, "test-unittest17"); 3224 if (found) { 3225 of_node_put(found); 3226 ret = -EEXIST; 3227 } 3228 break; 3229 3230 case OF_OVERLAY_PRE_REMOVE: 3231 found = of_find_node_by_name(nd->overlay, "test-unittest18"); 3232 if (found) { 3233 of_node_put(found); 3234 ret = -EXDEV; 3235 } 3236 break; 3237 3238 case OF_OVERLAY_POST_REMOVE: 3239 found = of_find_node_by_name(nd->overlay, "test-unittest19"); 3240 if (found) { 3241 of_node_put(found); 3242 ret = -ENODEV; 3243 } 3244 break; 3245 3246 default: /* should not happen */ 3247 of_node_put(nd->overlay); 3248 ret = -EINVAL; 3249 break; 3250 } 3251 3252 if (ret) 3253 return notifier_from_errno(ret); 3254 3255 return NOTIFY_DONE; 3256 } 3257 3258 static struct notifier_block of_nb = { 3259 .notifier_call = of_notify, 3260 }; 3261 3262 static void __init of_unittest_overlay_notify(void) 3263 { 3264 int ovcs_id; 3265 int ret; 3266 3267 ret = of_overlay_notifier_register(&of_nb); 3268 unittest(!ret, 3269 "of_overlay_notifier_register() failed, ret = %d\n", ret); 3270 if (ret) 3271 return; 3272 3273 /* 3274 * The overlays are applied by overlay_data_apply() 3275 * instead of of_unittest_apply_overlay() so that they 3276 * will not be tracked. Thus they will not be removed 3277 * by of_unittest_remove_tracked_overlays(). 3278 * 3279 * Applying overlays 16 - 19 will each trigger an error for a 3280 * different action in of_notify(). 3281 * 3282 * Applying overlay 20 will not trigger any error in of_notify(). 3283 */ 3284 3285 /* --- overlay 16 --- */ 3286 3287 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3288 3289 unittest(overlay_data_apply("overlay_16", &ovcs_id), 3290 "test OF_OVERLAY_PRE_APPLY notify injected error\n"); 3291 3292 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3293 3294 unittest(ovcs_id, "ovcs_id not created for overlay_16\n"); 3295 3296 /* --- overlay 17 --- */ 3297 3298 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3299 3300 unittest(overlay_data_apply("overlay_17", &ovcs_id), 3301 "test OF_OVERLAY_POST_APPLY notify injected error\n"); 3302 3303 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3304 3305 unittest(ovcs_id, "ovcs_id not created for overlay_17\n"); 3306 3307 /* --- overlay 18 --- */ 3308 3309 unittest(overlay_data_apply("overlay_18", &ovcs_id), 3310 "OF_OVERLAY_PRE_REMOVE notify injected error\n"); 3311 3312 unittest(ovcs_id, "ovcs_id not created for overlay_18\n"); 3313 3314 if (ovcs_id) { 3315 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3316 3317 ret = of_overlay_remove(&ovcs_id); 3318 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3319 if (ret == -EXDEV) { 3320 /* 3321 * change set ovcs_id should still exist 3322 */ 3323 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n"); 3324 } else { 3325 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n"); 3326 } 3327 } else { 3328 unittest(1, "ovcs_id not created for overlay_18\n"); 3329 } 3330 3331 unittest(ovcs_id, "ovcs_id removed for overlay_18\n"); 3332 3333 /* --- overlay 19 --- */ 3334 3335 unittest(overlay_data_apply("overlay_19", &ovcs_id), 3336 "OF_OVERLAY_POST_REMOVE notify injected error\n"); 3337 3338 unittest(ovcs_id, "ovcs_id not created for overlay_19\n"); 3339 3340 if (ovcs_id) { 3341 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3342 ret = of_overlay_remove(&ovcs_id); 3343 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3344 if (ret == -ENODEV) 3345 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n"); 3346 else 3347 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n"); 3348 } else { 3349 unittest(1, "ovcs_id removed for overlay_19\n"); 3350 } 3351 3352 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n", 3353 ovcs_id); 3354 3355 /* --- overlay 20 --- */ 3356 3357 unittest(overlay_data_apply("overlay_20", &ovcs_id), 3358 "overlay notify no injected error\n"); 3359 3360 if (ovcs_id) { 3361 ret = of_overlay_remove(&ovcs_id); 3362 if (ret) 3363 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n", 3364 ret); 3365 } else { 3366 unittest(1, "ovcs_id not created for overlay_20\n"); 3367 } 3368 3369 unittest(!of_overlay_notifier_unregister(&of_nb), 3370 "of_overlay_notifier_unregister() failed, ret = %d\n", ret); 3371 } 3372 3373 static void __init of_unittest_overlay(void) 3374 { 3375 struct device_node *bus_np = NULL; 3376 unsigned int i; 3377 3378 if (platform_driver_register(&unittest_driver)) { 3379 unittest(0, "could not register unittest driver\n"); 3380 goto out; 3381 } 3382 3383 bus_np = of_find_node_by_path(bus_path); 3384 if (bus_np == NULL) { 3385 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 3386 goto out; 3387 } 3388 3389 if (of_platform_default_populate(bus_np, NULL, NULL)) { 3390 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 3391 goto out; 3392 } 3393 3394 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 3395 unittest(0, "could not find unittest0 @ \"%s\"\n", 3396 unittest_path(100, PDEV_OVERLAY)); 3397 goto out; 3398 } 3399 3400 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 3401 unittest(0, "unittest1 @ \"%s\" should not exist\n", 3402 unittest_path(101, PDEV_OVERLAY)); 3403 goto out; 3404 } 3405 3406 unittest(1, "basic infrastructure of overlays passed"); 3407 3408 /* tests in sequence */ 3409 of_unittest_overlay_0(); 3410 of_unittest_overlay_1(); 3411 of_unittest_overlay_2(); 3412 of_unittest_overlay_3(); 3413 of_unittest_overlay_4(); 3414 for (i = 0; i < 3; i++) 3415 of_unittest_overlay_5(); 3416 of_unittest_overlay_6(); 3417 of_unittest_overlay_8(); 3418 3419 of_unittest_overlay_10(); 3420 of_unittest_overlay_11(); 3421 3422 #if IS_BUILTIN(CONFIG_I2C) 3423 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 3424 goto out; 3425 3426 of_unittest_overlay_i2c_12(); 3427 of_unittest_overlay_i2c_13(); 3428 of_unittest_overlay_i2c_14(); 3429 of_unittest_overlay_i2c_15(); 3430 3431 of_unittest_overlay_i2c_cleanup(); 3432 #endif 3433 3434 of_unittest_overlay_gpio(); 3435 3436 of_unittest_remove_tracked_overlays(); 3437 3438 of_unittest_overlay_notify(); 3439 3440 out: 3441 of_node_put(bus_np); 3442 } 3443 3444 #else 3445 static inline void __init of_unittest_overlay(void) { } 3446 #endif 3447 3448 static void __init of_unittest_lifecycle(void) 3449 { 3450 #ifdef CONFIG_OF_DYNAMIC 3451 unsigned int refcount; 3452 int found_refcount_one = 0; 3453 int put_count = 0; 3454 struct device_node *np; 3455 struct device_node *prev_sibling, *next_sibling; 3456 const char *refcount_path = "/testcase-data/refcount-node"; 3457 const char *refcount_parent_path = "/testcase-data"; 3458 3459 /* 3460 * Node lifecycle tests, non-dynamic node: 3461 * 3462 * - Decrementing refcount to zero via of_node_put() should cause the 3463 * attempt to free the node memory by of_node_release() to fail 3464 * because the node is not a dynamic node. 3465 * 3466 * - Decrementing refcount past zero should result in additional 3467 * errors reported. 3468 */ 3469 3470 np = of_find_node_by_path(refcount_path); 3471 unittest(np, "find refcount_path \"%s\"\n", refcount_path); 3472 if (np == NULL) 3473 goto out_skip_tests; 3474 3475 while (!found_refcount_one) { 3476 3477 if (put_count++ > 10) { 3478 unittest(0, "guardrail to avoid infinite loop\n"); 3479 goto out_skip_tests; 3480 } 3481 3482 refcount = kref_read(&np->kobj.kref); 3483 if (refcount == 1) 3484 found_refcount_one = 1; 3485 else 3486 of_node_put(np); 3487 } 3488 3489 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3490 3491 /* 3492 * refcount is now one, decrementing to zero will result in a call to 3493 * of_node_release() to free the node's memory, which should result 3494 * in an error 3495 */ 3496 unittest(1, "/testcase-data/refcount-node is one"); 3497 of_node_put(np); 3498 3499 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3500 3501 3502 /* 3503 * expect stack trace for subsequent of_node_put(): 3504 * __refcount_sub_and_test() calls: 3505 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF) 3506 * 3507 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just 3508 * the first three lines, and the last line. 3509 */ 3510 EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3511 EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3512 EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3513 EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3514 3515 /* refcount is now zero, this should fail */ 3516 unittest(1, "/testcase-data/refcount-node is zero"); 3517 of_node_put(np); 3518 3519 EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3520 EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3521 EXPECT_END(KERN_INFO, "WARNING: <<all>>"); 3522 EXPECT_END(KERN_INFO, "------------[ cut here ]------------"); 3523 3524 /* 3525 * Q. do we expect to get yet another warning? 3526 * A. no, the WARNING is from WARN_ONCE() 3527 */ 3528 EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3529 EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3530 EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3531 EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3532 3533 unittest(1, "/testcase-data/refcount-node is zero, second time"); 3534 of_node_put(np); 3535 3536 EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3537 EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3538 EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>"); 3539 EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------"); 3540 3541 /* 3542 * refcount of zero will trigger stack traces from any further 3543 * attempt to of_node_get() node "refcount-node". One example of 3544 * this is where of_unittest_check_node_linkage() will recursively 3545 * scan the tree, with 'for_each_child_of_node()' doing an 3546 * of_node_get() of the children of a node. 3547 * 3548 * Prevent the stack trace by removing node "refcount-node" from 3549 * its parent's child list. 3550 * 3551 * WARNING: EVIL, EVIL, EVIL: 3552 * 3553 * Directly manipulate the child list of node /testcase-data to 3554 * remove child refcount-node. This is ignoring all proper methods 3555 * of removing a child and will leak a small amount of memory. 3556 */ 3557 3558 np = of_find_node_by_path(refcount_parent_path); 3559 unittest(np, "find refcount_parent_path \"%s\"\n", refcount_parent_path); 3560 unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n"); 3561 if (np == NULL) 3562 return; 3563 3564 prev_sibling = np->child; 3565 next_sibling = prev_sibling->sibling; 3566 if (!strcmp(prev_sibling->full_name, "refcount-node")) { 3567 np->child = next_sibling; 3568 next_sibling = next_sibling->sibling; 3569 } 3570 while (next_sibling) { 3571 if (!strcmp(next_sibling->full_name, "refcount-node")) 3572 prev_sibling->sibling = next_sibling->sibling; 3573 prev_sibling = next_sibling; 3574 next_sibling = next_sibling->sibling; 3575 } 3576 of_node_put(np); 3577 3578 return; 3579 3580 out_skip_tests: 3581 #endif 3582 unittest(0, "One or more lifecycle tests skipped\n"); 3583 } 3584 3585 #ifdef CONFIG_OF_OVERLAY 3586 3587 /* 3588 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are 3589 * created by cmd_wrap_S_dtbo in scripts/Makefile.dtbs 3590 */ 3591 3592 #define OVERLAY_INFO_EXTERN(overlay_name) \ 3593 extern uint8_t __dtbo_##overlay_name##_begin[]; \ 3594 extern uint8_t __dtbo_##overlay_name##_end[] 3595 3596 #define OVERLAY_INFO(overlay_name, expected, expected_remove) \ 3597 { .dtbo_begin = __dtbo_##overlay_name##_begin, \ 3598 .dtbo_end = __dtbo_##overlay_name##_end, \ 3599 .expected_result = expected, \ 3600 .expected_result_remove = expected_remove, \ 3601 .name = #overlay_name, \ 3602 } 3603 3604 struct overlay_info { 3605 uint8_t *dtbo_begin; 3606 uint8_t *dtbo_end; 3607 int expected_result; 3608 int expected_result_remove; /* if apply failed */ 3609 int ovcs_id; 3610 char *name; 3611 }; 3612 3613 OVERLAY_INFO_EXTERN(overlay_base); 3614 OVERLAY_INFO_EXTERN(overlay); 3615 OVERLAY_INFO_EXTERN(overlay_0); 3616 OVERLAY_INFO_EXTERN(overlay_1); 3617 OVERLAY_INFO_EXTERN(overlay_2); 3618 OVERLAY_INFO_EXTERN(overlay_3); 3619 OVERLAY_INFO_EXTERN(overlay_4); 3620 OVERLAY_INFO_EXTERN(overlay_5); 3621 OVERLAY_INFO_EXTERN(overlay_6); 3622 OVERLAY_INFO_EXTERN(overlay_7); 3623 OVERLAY_INFO_EXTERN(overlay_8); 3624 OVERLAY_INFO_EXTERN(overlay_9); 3625 OVERLAY_INFO_EXTERN(overlay_10); 3626 OVERLAY_INFO_EXTERN(overlay_11); 3627 OVERLAY_INFO_EXTERN(overlay_12); 3628 OVERLAY_INFO_EXTERN(overlay_13); 3629 OVERLAY_INFO_EXTERN(overlay_15); 3630 OVERLAY_INFO_EXTERN(overlay_16); 3631 OVERLAY_INFO_EXTERN(overlay_17); 3632 OVERLAY_INFO_EXTERN(overlay_18); 3633 OVERLAY_INFO_EXTERN(overlay_19); 3634 OVERLAY_INFO_EXTERN(overlay_20); 3635 OVERLAY_INFO_EXTERN(overlay_gpio_01); 3636 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 3637 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 3638 OVERLAY_INFO_EXTERN(overlay_gpio_03); 3639 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 3640 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 3641 OVERLAY_INFO_EXTERN(overlay_pci_node); 3642 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 3643 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 3644 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 3645 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 3646 OVERLAY_INFO_EXTERN(overlay_bad_unresolved); 3647 3648 /* entries found by name */ 3649 static struct overlay_info overlays[] = { 3650 OVERLAY_INFO(overlay_base, -9999, 0), 3651 OVERLAY_INFO(overlay, 0, 0), 3652 OVERLAY_INFO(overlay_0, 0, 0), 3653 OVERLAY_INFO(overlay_1, 0, 0), 3654 OVERLAY_INFO(overlay_2, 0, 0), 3655 OVERLAY_INFO(overlay_3, 0, 0), 3656 OVERLAY_INFO(overlay_4, 0, 0), 3657 OVERLAY_INFO(overlay_5, 0, 0), 3658 OVERLAY_INFO(overlay_6, 0, 0), 3659 OVERLAY_INFO(overlay_7, 0, 0), 3660 OVERLAY_INFO(overlay_8, 0, 0), 3661 OVERLAY_INFO(overlay_9, 0, 0), 3662 OVERLAY_INFO(overlay_10, 0, 0), 3663 OVERLAY_INFO(overlay_11, 0, 0), 3664 OVERLAY_INFO(overlay_12, 0, 0), 3665 OVERLAY_INFO(overlay_13, 0, 0), 3666 OVERLAY_INFO(overlay_15, 0, 0), 3667 OVERLAY_INFO(overlay_16, -EBUSY, 0), 3668 OVERLAY_INFO(overlay_17, -EEXIST, 0), 3669 OVERLAY_INFO(overlay_18, 0, 0), 3670 OVERLAY_INFO(overlay_19, 0, 0), 3671 OVERLAY_INFO(overlay_20, 0, 0), 3672 OVERLAY_INFO(overlay_gpio_01, 0, 0), 3673 OVERLAY_INFO(overlay_gpio_02a, 0, 0), 3674 OVERLAY_INFO(overlay_gpio_02b, 0, 0), 3675 OVERLAY_INFO(overlay_gpio_03, 0, 0), 3676 OVERLAY_INFO(overlay_gpio_04a, 0, 0), 3677 OVERLAY_INFO(overlay_gpio_04b, 0, 0), 3678 OVERLAY_INFO(overlay_pci_node, 0, 0), 3679 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV), 3680 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV), 3681 OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0), 3682 OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV), 3683 OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0), 3684 /* end marker */ 3685 { } 3686 }; 3687 3688 static struct device_node *overlay_base_root; 3689 3690 static void * __init dt_alloc_memory(u64 size, u64 align) 3691 { 3692 return memblock_alloc_or_panic(size, align); 3693 } 3694 3695 /* 3696 * Create base device tree for the overlay unittest. 3697 * 3698 * This is called from very early boot code. 3699 * 3700 * Do as much as possible the same way as done in __unflatten_device_tree 3701 * and other early boot steps for the normal FDT so that the overlay base 3702 * unflattened tree will have the same characteristics as the real tree 3703 * (such as having memory allocated by the early allocator). The goal 3704 * is to test "the real thing" as much as possible, and test "test setup 3705 * code" as little as possible. 3706 * 3707 * Have to stop before resolving phandles, because that uses kmalloc. 3708 */ 3709 void __init unittest_unflatten_overlay_base(void) 3710 { 3711 struct overlay_info *info; 3712 u32 data_size; 3713 void *new_fdt; 3714 u32 size; 3715 int found = 0; 3716 const char *overlay_name = "overlay_base"; 3717 3718 for (info = overlays; info && info->name; info++) { 3719 if (!strcmp(overlay_name, info->name)) { 3720 found = 1; 3721 break; 3722 } 3723 } 3724 if (!found) { 3725 pr_err("no overlay data for %s\n", overlay_name); 3726 return; 3727 } 3728 3729 info = &overlays[0]; 3730 3731 if (info->expected_result != -9999) { 3732 pr_err("No dtb 'overlay_base' to attach\n"); 3733 return; 3734 } 3735 3736 data_size = info->dtbo_end - info->dtbo_begin; 3737 if (!data_size) { 3738 pr_err("No dtb 'overlay_base' to attach\n"); 3739 return; 3740 } 3741 3742 size = fdt_totalsize(info->dtbo_begin); 3743 if (size != data_size) { 3744 pr_err("dtb 'overlay_base' header totalsize != actual size"); 3745 return; 3746 } 3747 3748 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 3749 if (!new_fdt) { 3750 pr_err("alloc for dtb 'overlay_base' failed"); 3751 return; 3752 } 3753 3754 memcpy(new_fdt, info->dtbo_begin, size); 3755 3756 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 3757 dt_alloc_memory, true); 3758 } 3759 3760 /* 3761 * The purpose of of_unittest_overlay_data_add is to add an 3762 * overlay in the normal fashion. This is a test of the whole 3763 * picture, instead of testing individual elements. 3764 * 3765 * A secondary purpose is to be able to verify that the contents of 3766 * /proc/device-tree/ contains the updated structure and values from 3767 * the overlay. That must be verified separately in user space. 3768 * 3769 * Return 0 on unexpected error. 3770 */ 3771 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id) 3772 { 3773 struct overlay_info *info; 3774 int passed = 1; 3775 int found = 0; 3776 int ret, ret2; 3777 u32 size; 3778 3779 for (info = overlays; info && info->name; info++) { 3780 if (!strcmp(overlay_name, info->name)) { 3781 found = 1; 3782 break; 3783 } 3784 } 3785 if (!found) { 3786 pr_err("no overlay data for %s\n", overlay_name); 3787 return 0; 3788 } 3789 3790 size = info->dtbo_end - info->dtbo_begin; 3791 if (!size) 3792 pr_err("no overlay data for %s\n", overlay_name); 3793 3794 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id, 3795 NULL); 3796 if (ovcs_id) 3797 *ovcs_id = info->ovcs_id; 3798 if (ret < 0) 3799 goto out; 3800 3801 pr_debug("%s applied\n", overlay_name); 3802 3803 out: 3804 if (ret != info->expected_result) { 3805 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3806 info->expected_result, ret, overlay_name); 3807 passed = 0; 3808 } 3809 3810 if (ret < 0) { 3811 /* changeset may be partially applied */ 3812 ret2 = of_overlay_remove(&info->ovcs_id); 3813 if (ret2 != info->expected_result_remove) { 3814 pr_err("of_overlay_remove() expected %d, ret=%d, %s\n", 3815 info->expected_result_remove, ret2, 3816 overlay_name); 3817 passed = 0; 3818 } 3819 } 3820 3821 return passed; 3822 } 3823 3824 /* 3825 * The purpose of of_unittest_overlay_high_level is to add an overlay 3826 * in the normal fashion. This is a test of the whole picture, 3827 * instead of individual elements. 3828 * 3829 * The first part of the function is _not_ normal overlay usage; it is 3830 * finishing splicing the base overlay device tree into the live tree. 3831 */ 3832 static __init void of_unittest_overlay_high_level(void) 3833 { 3834 struct device_node *last_sibling; 3835 struct device_node *np; 3836 struct device_node *of_symbols; 3837 struct device_node *overlay_base_symbols; 3838 struct device_node **pprev; 3839 struct property *prop; 3840 int ret; 3841 3842 if (!overlay_base_root) { 3843 unittest(0, "overlay_base_root not initialized\n"); 3844 return; 3845 } 3846 3847 /* 3848 * Could not fixup phandles in unittest_unflatten_overlay_base() 3849 * because kmalloc() was not yet available. 3850 */ 3851 of_overlay_mutex_lock(); 3852 of_resolve_phandles(overlay_base_root); 3853 of_overlay_mutex_unlock(); 3854 3855 3856 /* 3857 * do not allow overlay_base to duplicate any node already in 3858 * tree, this greatly simplifies the code 3859 */ 3860 3861 /* 3862 * remove overlay_base_root node "__local_fixups", after 3863 * being used by of_resolve_phandles() 3864 */ 3865 pprev = &overlay_base_root->child; 3866 for (np = overlay_base_root->child; np; np = np->sibling) { 3867 if (of_node_name_eq(np, "__local_fixups__")) { 3868 *pprev = np->sibling; 3869 break; 3870 } 3871 pprev = &np->sibling; 3872 } 3873 3874 /* remove overlay_base_root node "__symbols__" if in live tree */ 3875 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3876 if (of_symbols) { 3877 /* will have to graft properties from node into live tree */ 3878 pprev = &overlay_base_root->child; 3879 for (np = overlay_base_root->child; np; np = np->sibling) { 3880 if (of_node_name_eq(np, "__symbols__")) { 3881 overlay_base_symbols = np; 3882 *pprev = np->sibling; 3883 break; 3884 } 3885 pprev = &np->sibling; 3886 } 3887 } 3888 3889 for_each_child_of_node(overlay_base_root, np) { 3890 struct device_node *base_child; 3891 for_each_child_of_node(of_root, base_child) { 3892 if (!strcmp(np->full_name, base_child->full_name)) { 3893 unittest(0, "illegal node name in overlay_base %pOFn", 3894 np); 3895 of_node_put(np); 3896 of_node_put(base_child); 3897 return; 3898 } 3899 } 3900 } 3901 3902 /* 3903 * overlay 'overlay_base' is not allowed to have root 3904 * properties, so only need to splice nodes into main device tree. 3905 * 3906 * root node of *overlay_base_root will not be freed, it is lost 3907 * memory. 3908 */ 3909 3910 for (np = overlay_base_root->child; np; np = np->sibling) 3911 np->parent = of_root; 3912 3913 mutex_lock(&of_mutex); 3914 3915 for (last_sibling = np = of_root->child; np; np = np->sibling) 3916 last_sibling = np; 3917 3918 if (last_sibling) 3919 last_sibling->sibling = overlay_base_root->child; 3920 else 3921 of_root->child = overlay_base_root->child; 3922 3923 for_each_of_allnodes_from(overlay_base_root, np) 3924 __of_attach_node_sysfs(np); 3925 3926 if (of_symbols) { 3927 struct property *new_prop; 3928 for_each_property_of_node(overlay_base_symbols, prop) { 3929 3930 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3931 if (!new_prop) { 3932 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3933 prop->name); 3934 goto err_unlock; 3935 } 3936 if (__of_add_property(of_symbols, new_prop)) { 3937 __of_prop_free(new_prop); 3938 /* "name" auto-generated by unflatten */ 3939 if (!strcmp(prop->name, "name")) 3940 continue; 3941 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3942 prop->name); 3943 goto err_unlock; 3944 } 3945 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3946 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3947 prop->name); 3948 goto err_unlock; 3949 } 3950 } 3951 } 3952 3953 mutex_unlock(&of_mutex); 3954 3955 3956 /* now do the normal overlay usage test */ 3957 3958 /* --- overlay --- */ 3959 3960 EXPECT_BEGIN(KERN_ERR, 3961 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3962 EXPECT_BEGIN(KERN_ERR, 3963 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3964 EXPECT_BEGIN(KERN_ERR, 3965 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3966 EXPECT_BEGIN(KERN_ERR, 3967 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3968 EXPECT_BEGIN(KERN_ERR, 3969 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3970 EXPECT_BEGIN(KERN_ERR, 3971 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3972 EXPECT_BEGIN(KERN_ERR, 3973 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3974 EXPECT_BEGIN(KERN_ERR, 3975 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3976 EXPECT_BEGIN(KERN_ERR, 3977 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3978 EXPECT_BEGIN(KERN_ERR, 3979 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3980 EXPECT_BEGIN(KERN_ERR, 3981 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3982 3983 ret = overlay_data_apply("overlay", NULL); 3984 3985 EXPECT_END(KERN_ERR, 3986 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3987 EXPECT_END(KERN_ERR, 3988 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3989 EXPECT_END(KERN_ERR, 3990 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3991 EXPECT_END(KERN_ERR, 3992 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3993 EXPECT_END(KERN_ERR, 3994 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3995 EXPECT_END(KERN_ERR, 3996 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3997 EXPECT_END(KERN_ERR, 3998 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3999 EXPECT_END(KERN_ERR, 4000 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 4001 EXPECT_END(KERN_ERR, 4002 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 4003 EXPECT_END(KERN_ERR, 4004 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 4005 EXPECT_END(KERN_ERR, 4006 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 4007 4008 unittest(ret, "Adding overlay 'overlay' failed\n"); 4009 4010 /* --- overlay_bad_add_dup_node --- */ 4011 4012 EXPECT_BEGIN(KERN_ERR, 4013 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4014 EXPECT_BEGIN(KERN_ERR, 4015 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4016 EXPECT_BEGIN(KERN_ERR, 4017 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4018 EXPECT_BEGIN(KERN_ERR, 4019 "OF: Error reverting changeset (-19)"); 4020 4021 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 4022 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 4023 4024 EXPECT_END(KERN_ERR, 4025 "OF: Error reverting changeset (-19)"); 4026 EXPECT_END(KERN_ERR, 4027 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4028 EXPECT_END(KERN_ERR, 4029 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4030 EXPECT_END(KERN_ERR, 4031 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4032 4033 /* --- overlay_bad_add_dup_prop --- */ 4034 4035 EXPECT_BEGIN(KERN_ERR, 4036 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 4037 EXPECT_BEGIN(KERN_ERR, 4038 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 4039 EXPECT_BEGIN(KERN_ERR, 4040 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 4041 EXPECT_BEGIN(KERN_ERR, 4042 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name"); 4043 EXPECT_BEGIN(KERN_ERR, 4044 "OF: Error reverting changeset (-19)"); 4045 4046 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 4047 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 4048 4049 EXPECT_END(KERN_ERR, 4050 "OF: Error reverting changeset (-19)"); 4051 EXPECT_END(KERN_ERR, 4052 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name"); 4053 EXPECT_END(KERN_ERR, 4054 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 4055 EXPECT_END(KERN_ERR, 4056 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 4057 EXPECT_END(KERN_ERR, 4058 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 4059 4060 /* --- overlay_bad_phandle --- */ 4061 4062 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 4063 "Adding overlay 'overlay_bad_phandle' failed\n"); 4064 4065 /* --- overlay_bad_symbol --- */ 4066 4067 EXPECT_BEGIN(KERN_ERR, 4068 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4069 EXPECT_BEGIN(KERN_ERR, 4070 "OF: Error reverting changeset (-19)"); 4071 4072 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 4073 "Adding overlay 'overlay_bad_symbol' failed\n"); 4074 4075 EXPECT_END(KERN_ERR, 4076 "OF: Error reverting changeset (-19)"); 4077 EXPECT_END(KERN_ERR, 4078 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4079 4080 /* --- overlay_bad_unresolved --- */ 4081 4082 EXPECT_BEGIN(KERN_ERR, 4083 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4084 EXPECT_BEGIN(KERN_ERR, 4085 "OF: resolver: overlay phandle fixup failed: -22"); 4086 4087 unittest(overlay_data_apply("overlay_bad_unresolved", NULL), 4088 "Adding overlay 'overlay_bad_unresolved' failed\n"); 4089 4090 EXPECT_END(KERN_ERR, 4091 "OF: resolver: overlay phandle fixup failed: -22"); 4092 EXPECT_END(KERN_ERR, 4093 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4094 4095 return; 4096 4097 err_unlock: 4098 mutex_unlock(&of_mutex); 4099 } 4100 4101 static int of_unittest_pci_dev_num; 4102 static int of_unittest_pci_child_num; 4103 4104 /* 4105 * PCI device tree node test driver 4106 */ 4107 static const struct pci_device_id testdrv_pci_ids[] = { 4108 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */ 4109 { 0, } 4110 }; 4111 4112 static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id) 4113 { 4114 struct overlay_info *info; 4115 struct device_node *dn; 4116 int ret, ovcs_id; 4117 u32 size; 4118 4119 dn = pdev->dev.of_node; 4120 if (!dn) { 4121 dev_err(&pdev->dev, "does not find bus endpoint"); 4122 return -EINVAL; 4123 } 4124 4125 for (info = overlays; info && info->name; info++) { 4126 if (!strcmp(info->name, "overlay_pci_node")) 4127 break; 4128 } 4129 if (!info || !info->name) { 4130 dev_err(&pdev->dev, "no overlay data for overlay_pci_node"); 4131 return -ENODEV; 4132 } 4133 4134 size = info->dtbo_end - info->dtbo_begin; 4135 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn); 4136 of_node_put(dn); 4137 if (ret) 4138 return ret; 4139 4140 of_platform_default_populate(dn, NULL, &pdev->dev); 4141 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id); 4142 4143 return 0; 4144 } 4145 4146 static void testdrv_remove(struct pci_dev *pdev) 4147 { 4148 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev); 4149 4150 of_platform_depopulate(&pdev->dev); 4151 of_overlay_remove(&ovcs_id); 4152 } 4153 4154 static struct pci_driver testdrv_driver = { 4155 .name = "pci_dt_testdrv", 4156 .id_table = testdrv_pci_ids, 4157 .probe = testdrv_probe, 4158 .remove = testdrv_remove, 4159 }; 4160 4161 static int unittest_pci_probe(struct platform_device *pdev) 4162 { 4163 struct resource *res; 4164 struct device *dev; 4165 u64 exp_addr; 4166 4167 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 4168 if (!res) 4169 return -ENODEV; 4170 4171 dev = &pdev->dev; 4172 while (dev && !dev_is_pci(dev)) 4173 dev = dev->parent; 4174 if (!dev) { 4175 pr_err("unable to find parent device\n"); 4176 return -ENODEV; 4177 } 4178 4179 exp_addr = pci_resource_start(to_pci_dev(dev), 0) + 0x100; 4180 unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n", 4181 (u64)res->start, exp_addr); 4182 4183 of_unittest_pci_child_num++; 4184 4185 return 0; 4186 } 4187 4188 static const struct of_device_id unittest_pci_of_match[] = { 4189 { .compatible = "unittest-pci" }, 4190 { } 4191 }; 4192 4193 static struct platform_driver unittest_pci_driver = { 4194 .probe = unittest_pci_probe, 4195 .driver = { 4196 .name = "unittest-pci", 4197 .of_match_table = unittest_pci_of_match, 4198 }, 4199 }; 4200 4201 static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add) 4202 { 4203 struct device_node *pnp, *np = NULL; 4204 struct device *child_dev; 4205 char *path = NULL; 4206 const __be32 *reg; 4207 int rc = 0; 4208 4209 pnp = pdev->dev.of_node; 4210 unittest(pnp, "Failed creating PCI dt node\n"); 4211 if (!pnp) 4212 return -ENODEV; 4213 4214 if (add) { 4215 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100", pnp); 4216 np = of_find_node_by_path(path); 4217 unittest(np, "Failed to get unittest-pci node under PCI node\n"); 4218 if (!np) { 4219 rc = -ENODEV; 4220 goto failed; 4221 } 4222 4223 reg = of_get_property(np, "reg", NULL); 4224 unittest(reg, "Failed to get reg property\n"); 4225 if (!reg) 4226 rc = -ENODEV; 4227 } else { 4228 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0", pnp); 4229 np = of_find_node_by_path(path); 4230 unittest(!np, "Child device tree node is not removed\n"); 4231 child_dev = device_find_any_child(&pdev->dev); 4232 unittest(!child_dev, "Child device is not removed\n"); 4233 } 4234 4235 failed: 4236 kfree(path); 4237 if (np) 4238 of_node_put(np); 4239 4240 return rc; 4241 } 4242 4243 static void __init of_unittest_pci_node(void) 4244 { 4245 struct pci_dev *pdev = NULL; 4246 int rc; 4247 4248 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES)) 4249 return; 4250 4251 rc = pci_register_driver(&testdrv_driver); 4252 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc); 4253 if (rc) 4254 return; 4255 4256 rc = platform_driver_register(&unittest_pci_driver); 4257 if (unittest(!rc, "Failed to register unittest pci driver\n")) { 4258 pci_unregister_driver(&testdrv_driver); 4259 return; 4260 } 4261 4262 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) { 4263 of_unittest_pci_node_verify(pdev, true); 4264 of_unittest_pci_dev_num++; 4265 } 4266 if (pdev) 4267 pci_dev_put(pdev); 4268 4269 unittest(of_unittest_pci_dev_num, 4270 "No test PCI device been found. Please run QEMU with '-device pci-testdev'\n"); 4271 unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num, 4272 "Child device number %d is not expected %d", of_unittest_pci_child_num, 4273 of_unittest_pci_dev_num); 4274 4275 platform_driver_unregister(&unittest_pci_driver); 4276 pci_unregister_driver(&testdrv_driver); 4277 4278 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) 4279 of_unittest_pci_node_verify(pdev, false); 4280 if (pdev) 4281 pci_dev_put(pdev); 4282 } 4283 #else 4284 4285 static inline __init void of_unittest_overlay_high_level(void) {} 4286 static inline __init void of_unittest_pci_node(void) { } 4287 4288 #endif 4289 4290 static int __init of_unittest(void) 4291 { 4292 struct device_node *np; 4293 int res; 4294 4295 pr_info("start of unittest - you will see error messages\n"); 4296 4297 /* Taint the kernel so we know we've run tests. */ 4298 add_taint(TAINT_TEST, LOCKDEP_STILL_OK); 4299 4300 /* adding data for unittest */ 4301 res = unittest_data_add(); 4302 if (res) 4303 return res; 4304 if (!of_aliases) 4305 of_aliases = of_find_node_by_path("/aliases"); 4306 4307 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 4308 if (!np) { 4309 pr_info("No testcase data in device tree; not running tests\n"); 4310 return 0; 4311 } 4312 of_node_put(np); 4313 4314 of_unittest_check_tree_linkage(); 4315 of_unittest_check_phandles(); 4316 of_unittest_find_node_by_name(); 4317 of_unittest_dynamic(); 4318 of_unittest_parse_phandle_with_args(); 4319 of_unittest_parse_phandle_with_args_map(); 4320 of_unittest_printf(); 4321 of_unittest_property_string(); 4322 of_unittest_property_copy(); 4323 of_unittest_changeset(); 4324 of_unittest_changeset_prop(); 4325 of_unittest_parse_interrupts(); 4326 of_unittest_parse_interrupts_extended(); 4327 of_unittest_dma_get_max_cpu_address(); 4328 of_unittest_parse_dma_ranges(); 4329 of_unittest_pci_dma_ranges(); 4330 of_unittest_pci_empty_dma_ranges(); 4331 of_unittest_bus_ranges(); 4332 of_unittest_bus_3cell_ranges(); 4333 of_unittest_reg(); 4334 of_unittest_translate_addr(); 4335 of_unittest_match_node(); 4336 of_unittest_platform_populate(); 4337 of_unittest_overlay(); 4338 of_unittest_lifecycle(); 4339 of_unittest_pci_node(); 4340 4341 /* Double check linkage after removing testcase data */ 4342 of_unittest_check_tree_linkage(); 4343 4344 of_unittest_overlay_high_level(); 4345 4346 pr_info("end of unittest - %i passed, %i failed\n", 4347 unittest_results.passed, unittest_results.failed); 4348 4349 return 0; 4350 } 4351 late_initcall(of_unittest); 4352