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/kernel.h> 26 27 #include <linux/i2c.h> 28 #include <linux/i2c-mux.h> 29 #include <linux/gpio/driver.h> 30 31 #include <linux/bitops.h> 32 33 #include "of_private.h" 34 35 static struct unittest_results { 36 int passed; 37 int failed; 38 } unittest_results; 39 40 #define unittest(result, fmt, ...) ({ \ 41 bool failed = !(result); \ 42 if (failed) { \ 43 unittest_results.failed++; \ 44 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 45 } else { \ 46 unittest_results.passed++; \ 47 pr_debug("pass %s():%i\n", __func__, __LINE__); \ 48 } \ 49 failed; \ 50 }) 51 52 /* 53 * Expected message may have a message level other than KERN_INFO. 54 * Print the expected message only if the current loglevel will allow 55 * the actual message to print. 56 * 57 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by 58 * pr_debug(). 59 */ 60 #define EXPECT_BEGIN(level, fmt, ...) \ 61 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 62 63 #define EXPECT_END(level, fmt, ...) \ 64 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 65 66 static void __init of_unittest_find_node_by_name(void) 67 { 68 struct device_node *np; 69 const char *options, *name; 70 71 np = of_find_node_by_path("/testcase-data"); 72 name = kasprintf(GFP_KERNEL, "%pOF", np); 73 unittest(np && !strcmp("/testcase-data", name), 74 "find /testcase-data failed\n"); 75 of_node_put(np); 76 kfree(name); 77 78 /* Test if trailing '/' works */ 79 np = of_find_node_by_path("/testcase-data/"); 80 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 81 82 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 83 name = kasprintf(GFP_KERNEL, "%pOF", np); 84 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 85 "find /testcase-data/phandle-tests/consumer-a failed\n"); 86 of_node_put(np); 87 kfree(name); 88 89 np = of_find_node_by_path("testcase-alias"); 90 name = kasprintf(GFP_KERNEL, "%pOF", np); 91 unittest(np && !strcmp("/testcase-data", name), 92 "find testcase-alias failed\n"); 93 of_node_put(np); 94 kfree(name); 95 96 /* Test if trailing '/' works on aliases */ 97 np = of_find_node_by_path("testcase-alias/"); 98 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 99 100 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 101 name = kasprintf(GFP_KERNEL, "%pOF", np); 102 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 103 "find testcase-alias/phandle-tests/consumer-a failed\n"); 104 of_node_put(np); 105 kfree(name); 106 107 np = of_find_node_by_path("/testcase-data/missing-path"); 108 unittest(!np, "non-existent path returned node %pOF\n", np); 109 of_node_put(np); 110 111 np = of_find_node_by_path("missing-alias"); 112 unittest(!np, "non-existent alias returned node %pOF\n", np); 113 of_node_put(np); 114 115 np = of_find_node_by_path("testcase-alias/missing-path"); 116 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 117 of_node_put(np); 118 119 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 120 unittest(np && !strcmp("testoption", options), 121 "option path test failed\n"); 122 of_node_put(np); 123 124 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 125 unittest(np && !strcmp("test/option", options), 126 "option path test, subcase #1 failed\n"); 127 of_node_put(np); 128 129 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 130 unittest(np && !strcmp("test/option", options), 131 "option path test, subcase #2 failed\n"); 132 of_node_put(np); 133 134 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 135 unittest(np, "NULL option path test failed\n"); 136 of_node_put(np); 137 138 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 139 &options); 140 unittest(np && !strcmp("testaliasoption", options), 141 "option alias path test failed\n"); 142 of_node_put(np); 143 144 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 145 &options); 146 unittest(np && !strcmp("test/alias/option", options), 147 "option alias path test, subcase #1 failed\n"); 148 of_node_put(np); 149 150 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 151 unittest(np, "NULL option alias path test failed\n"); 152 of_node_put(np); 153 154 options = "testoption"; 155 np = of_find_node_opts_by_path("testcase-alias", &options); 156 unittest(np && !options, "option clearing test failed\n"); 157 of_node_put(np); 158 159 options = "testoption"; 160 np = of_find_node_opts_by_path("/", &options); 161 unittest(np && !options, "option clearing root node test failed\n"); 162 of_node_put(np); 163 } 164 165 static void __init of_unittest_dynamic(void) 166 { 167 struct device_node *np; 168 struct property *prop; 169 170 np = of_find_node_by_path("/testcase-data"); 171 if (!np) { 172 pr_err("missing testcase data\n"); 173 return; 174 } 175 176 /* Array of 4 properties for the purpose of testing */ 177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 178 if (!prop) { 179 unittest(0, "kzalloc() failed\n"); 180 return; 181 } 182 183 /* Add a new property - should pass*/ 184 prop->name = "new-property"; 185 prop->value = "new-property-data"; 186 prop->length = strlen(prop->value) + 1; 187 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 188 189 /* Try to add an existing property - should fail */ 190 prop++; 191 prop->name = "new-property"; 192 prop->value = "new-property-data-should-fail"; 193 prop->length = strlen(prop->value) + 1; 194 unittest(of_add_property(np, prop) != 0, 195 "Adding an existing property should have failed\n"); 196 197 /* Try to modify an existing property - should pass */ 198 prop->value = "modify-property-data-should-pass"; 199 prop->length = strlen(prop->value) + 1; 200 unittest(of_update_property(np, prop) == 0, 201 "Updating an existing property should have passed\n"); 202 203 /* Try to modify non-existent property - should pass*/ 204 prop++; 205 prop->name = "modify-property"; 206 prop->value = "modify-missing-property-data-should-pass"; 207 prop->length = strlen(prop->value) + 1; 208 unittest(of_update_property(np, prop) == 0, 209 "Updating a missing property should have passed\n"); 210 211 /* Remove property - should pass */ 212 unittest(of_remove_property(np, prop) == 0, 213 "Removing a property should have passed\n"); 214 215 /* Adding very large property - should pass */ 216 prop++; 217 prop->name = "large-property-PAGE_SIZEx8"; 218 prop->length = PAGE_SIZE * 8; 219 prop->value = kzalloc(prop->length, GFP_KERNEL); 220 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 221 if (prop->value) 222 unittest(of_add_property(np, prop) == 0, 223 "Adding a large property should have passed\n"); 224 } 225 226 static int __init of_unittest_check_node_linkage(struct device_node *np) 227 { 228 struct device_node *child; 229 int count = 0, rc; 230 231 for_each_child_of_node(np, child) { 232 if (child->parent != np) { 233 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 234 child, np); 235 rc = -EINVAL; 236 goto put_child; 237 } 238 239 rc = of_unittest_check_node_linkage(child); 240 if (rc < 0) 241 goto put_child; 242 count += rc; 243 } 244 245 return count + 1; 246 put_child: 247 of_node_put(child); 248 return rc; 249 } 250 251 static void __init of_unittest_check_tree_linkage(void) 252 { 253 struct device_node *np; 254 int allnode_count = 0, child_count; 255 256 if (!of_root) 257 return; 258 259 for_each_of_allnodes(np) 260 allnode_count++; 261 child_count = of_unittest_check_node_linkage(of_root); 262 263 unittest(child_count > 0, "Device node data structure is corrupted\n"); 264 unittest(child_count == allnode_count, 265 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 266 allnode_count, child_count); 267 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 268 } 269 270 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 271 const char *expected) 272 { 273 unsigned char *buf; 274 int buf_size; 275 int size, i; 276 277 buf_size = strlen(expected) + 10; 278 buf = kmalloc(buf_size, GFP_KERNEL); 279 if (!buf) 280 return; 281 282 /* Baseline; check conversion with a large size limit */ 283 memset(buf, 0xff, buf_size); 284 size = snprintf(buf, buf_size - 2, fmt, np); 285 286 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 287 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 288 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 289 fmt, expected, buf); 290 291 /* Make sure length limits work */ 292 size++; 293 for (i = 0; i < 2; i++, size--) { 294 /* Clear the buffer, and make sure it works correctly still */ 295 memset(buf, 0xff, buf_size); 296 snprintf(buf, size+1, fmt, np); 297 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 298 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 299 size, fmt, expected, buf); 300 } 301 kfree(buf); 302 } 303 304 static void __init of_unittest_printf(void) 305 { 306 struct device_node *np; 307 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 308 char phandle_str[16] = ""; 309 310 np = of_find_node_by_path(full_name); 311 if (!np) { 312 unittest(np, "testcase data missing\n"); 313 return; 314 } 315 316 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 317 318 of_unittest_printf_one(np, "%pOF", full_name); 319 of_unittest_printf_one(np, "%pOFf", full_name); 320 of_unittest_printf_one(np, "%pOFn", "dev"); 321 of_unittest_printf_one(np, "%2pOFn", "dev"); 322 of_unittest_printf_one(np, "%5pOFn", " dev"); 323 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 324 of_unittest_printf_one(np, "%pOFp", phandle_str); 325 of_unittest_printf_one(np, "%pOFP", "dev@100"); 326 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 327 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 328 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 329 of_unittest_printf_one(of_root, "%pOFP", "/"); 330 of_unittest_printf_one(np, "%pOFF", "----"); 331 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 332 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 333 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 334 of_unittest_printf_one(np, "%pOFC", 335 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 336 } 337 338 struct node_hash { 339 struct hlist_node node; 340 struct device_node *np; 341 }; 342 343 static DEFINE_HASHTABLE(phandle_ht, 8); 344 static void __init of_unittest_check_phandles(void) 345 { 346 struct device_node *np; 347 struct node_hash *nh; 348 struct hlist_node *tmp; 349 int i, dup_count = 0, phandle_count = 0; 350 351 for_each_of_allnodes(np) { 352 if (!np->phandle) 353 continue; 354 355 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 356 if (nh->np->phandle == np->phandle) { 357 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 358 np->phandle, nh->np, np); 359 dup_count++; 360 break; 361 } 362 } 363 364 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 365 if (!nh) 366 return; 367 368 nh->np = np; 369 hash_add(phandle_ht, &nh->node, np->phandle); 370 phandle_count++; 371 } 372 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 373 dup_count, phandle_count); 374 375 /* Clean up */ 376 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 377 hash_del(&nh->node); 378 kfree(nh); 379 } 380 } 381 382 static void __init of_unittest_parse_phandle_with_args(void) 383 { 384 struct device_node *np; 385 struct of_phandle_args args; 386 int i, rc; 387 388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 389 if (!np) { 390 pr_err("missing testcase data\n"); 391 return; 392 } 393 394 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 395 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 396 397 for (i = 0; i < 8; i++) { 398 bool passed = true; 399 400 memset(&args, 0, sizeof(args)); 401 rc = of_parse_phandle_with_args(np, "phandle-list", 402 "#phandle-cells", i, &args); 403 404 /* Test the values from tests-phandle.dtsi */ 405 switch (i) { 406 case 0: 407 passed &= !rc; 408 passed &= (args.args_count == 1); 409 passed &= (args.args[0] == (i + 1)); 410 break; 411 case 1: 412 passed &= !rc; 413 passed &= (args.args_count == 2); 414 passed &= (args.args[0] == (i + 1)); 415 passed &= (args.args[1] == 0); 416 break; 417 case 2: 418 passed &= (rc == -ENOENT); 419 break; 420 case 3: 421 passed &= !rc; 422 passed &= (args.args_count == 3); 423 passed &= (args.args[0] == (i + 1)); 424 passed &= (args.args[1] == 4); 425 passed &= (args.args[2] == 3); 426 break; 427 case 4: 428 passed &= !rc; 429 passed &= (args.args_count == 2); 430 passed &= (args.args[0] == (i + 1)); 431 passed &= (args.args[1] == 100); 432 break; 433 case 5: 434 passed &= !rc; 435 passed &= (args.args_count == 0); 436 break; 437 case 6: 438 passed &= !rc; 439 passed &= (args.args_count == 1); 440 passed &= (args.args[0] == (i + 1)); 441 break; 442 case 7: 443 passed &= (rc == -ENOENT); 444 break; 445 default: 446 passed = false; 447 } 448 449 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 450 i, args.np, rc); 451 } 452 453 /* Check for missing list property */ 454 memset(&args, 0, sizeof(args)); 455 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 456 "#phandle-cells", 0, &args); 457 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 458 rc = of_count_phandle_with_args(np, "phandle-list-missing", 459 "#phandle-cells"); 460 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 461 462 /* Check for missing cells property */ 463 memset(&args, 0, sizeof(args)); 464 465 EXPECT_BEGIN(KERN_INFO, 466 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 467 468 rc = of_parse_phandle_with_args(np, "phandle-list", 469 "#phandle-cells-missing", 0, &args); 470 471 EXPECT_END(KERN_INFO, 472 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 473 474 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 475 476 EXPECT_BEGIN(KERN_INFO, 477 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 478 479 rc = of_count_phandle_with_args(np, "phandle-list", 480 "#phandle-cells-missing"); 481 482 EXPECT_END(KERN_INFO, 483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 484 485 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 486 487 /* Check for bad phandle in list */ 488 memset(&args, 0, sizeof(args)); 489 490 EXPECT_BEGIN(KERN_INFO, 491 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 492 493 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 494 "#phandle-cells", 0, &args); 495 496 EXPECT_END(KERN_INFO, 497 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 498 499 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 500 501 EXPECT_BEGIN(KERN_INFO, 502 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 503 504 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 505 "#phandle-cells"); 506 507 EXPECT_END(KERN_INFO, 508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 509 510 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 511 512 /* Check for incorrectly formed argument list */ 513 memset(&args, 0, sizeof(args)); 514 515 EXPECT_BEGIN(KERN_INFO, 516 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 517 518 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 519 "#phandle-cells", 1, &args); 520 521 EXPECT_END(KERN_INFO, 522 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 523 524 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 525 526 EXPECT_BEGIN(KERN_INFO, 527 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 528 529 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 530 "#phandle-cells"); 531 532 EXPECT_END(KERN_INFO, 533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 534 535 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 536 } 537 538 static void __init of_unittest_parse_phandle_with_args_map(void) 539 { 540 struct device_node *np, *p0, *p1, *p2, *p3; 541 struct of_phandle_args args; 542 int i, rc; 543 544 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 545 if (!np) { 546 pr_err("missing testcase data\n"); 547 return; 548 } 549 550 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 551 if (!p0) { 552 pr_err("missing testcase data\n"); 553 return; 554 } 555 556 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 557 if (!p1) { 558 pr_err("missing testcase data\n"); 559 return; 560 } 561 562 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 563 if (!p2) { 564 pr_err("missing testcase data\n"); 565 return; 566 } 567 568 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 569 if (!p3) { 570 pr_err("missing testcase data\n"); 571 return; 572 } 573 574 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 575 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 576 577 for (i = 0; i < 8; i++) { 578 bool passed = true; 579 580 memset(&args, 0, sizeof(args)); 581 rc = of_parse_phandle_with_args_map(np, "phandle-list", 582 "phandle", i, &args); 583 584 /* Test the values from tests-phandle.dtsi */ 585 switch (i) { 586 case 0: 587 passed &= !rc; 588 passed &= (args.np == p1); 589 passed &= (args.args_count == 1); 590 passed &= (args.args[0] == 1); 591 break; 592 case 1: 593 passed &= !rc; 594 passed &= (args.np == p3); 595 passed &= (args.args_count == 3); 596 passed &= (args.args[0] == 2); 597 passed &= (args.args[1] == 5); 598 passed &= (args.args[2] == 3); 599 break; 600 case 2: 601 passed &= (rc == -ENOENT); 602 break; 603 case 3: 604 passed &= !rc; 605 passed &= (args.np == p0); 606 passed &= (args.args_count == 0); 607 break; 608 case 4: 609 passed &= !rc; 610 passed &= (args.np == p1); 611 passed &= (args.args_count == 1); 612 passed &= (args.args[0] == 3); 613 break; 614 case 5: 615 passed &= !rc; 616 passed &= (args.np == p0); 617 passed &= (args.args_count == 0); 618 break; 619 case 6: 620 passed &= !rc; 621 passed &= (args.np == p2); 622 passed &= (args.args_count == 2); 623 passed &= (args.args[0] == 15); 624 passed &= (args.args[1] == 0x20); 625 break; 626 case 7: 627 passed &= (rc == -ENOENT); 628 break; 629 default: 630 passed = false; 631 } 632 633 unittest(passed, "index %i - data error on node %s rc=%i\n", 634 i, args.np->full_name, rc); 635 } 636 637 /* Check for missing list property */ 638 memset(&args, 0, sizeof(args)); 639 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 640 "phandle", 0, &args); 641 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 642 643 /* Check for missing cells,map,mask property */ 644 memset(&args, 0, sizeof(args)); 645 646 EXPECT_BEGIN(KERN_INFO, 647 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 648 649 rc = of_parse_phandle_with_args_map(np, "phandle-list", 650 "phandle-missing", 0, &args); 651 EXPECT_END(KERN_INFO, 652 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 653 654 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 655 656 /* Check for bad phandle in list */ 657 memset(&args, 0, sizeof(args)); 658 659 EXPECT_BEGIN(KERN_INFO, 660 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 661 662 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 663 "phandle", 0, &args); 664 EXPECT_END(KERN_INFO, 665 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 666 667 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 668 669 /* Check for incorrectly formed argument list */ 670 memset(&args, 0, sizeof(args)); 671 672 EXPECT_BEGIN(KERN_INFO, 673 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 674 675 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 676 "phandle", 1, &args); 677 EXPECT_END(KERN_INFO, 678 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 679 680 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 681 } 682 683 static void __init of_unittest_property_string(void) 684 { 685 const char *strings[4]; 686 struct device_node *np; 687 int rc; 688 689 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 690 if (!np) { 691 pr_err("No testcase data in device tree\n"); 692 return; 693 } 694 695 rc = of_property_match_string(np, "phandle-list-names", "first"); 696 unittest(rc == 0, "first expected:0 got:%i\n", rc); 697 rc = of_property_match_string(np, "phandle-list-names", "second"); 698 unittest(rc == 1, "second expected:1 got:%i\n", rc); 699 rc = of_property_match_string(np, "phandle-list-names", "third"); 700 unittest(rc == 2, "third expected:2 got:%i\n", rc); 701 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 702 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 703 rc = of_property_match_string(np, "missing-property", "blah"); 704 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 705 rc = of_property_match_string(np, "empty-property", "blah"); 706 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 707 rc = of_property_match_string(np, "unterminated-string", "blah"); 708 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 709 710 /* of_property_count_strings() tests */ 711 rc = of_property_count_strings(np, "string-property"); 712 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 713 rc = of_property_count_strings(np, "phandle-list-names"); 714 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 715 rc = of_property_count_strings(np, "unterminated-string"); 716 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 717 rc = of_property_count_strings(np, "unterminated-string-list"); 718 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 719 720 /* of_property_read_string_index() tests */ 721 rc = of_property_read_string_index(np, "string-property", 0, strings); 722 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 723 strings[0] = NULL; 724 rc = of_property_read_string_index(np, "string-property", 1, strings); 725 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 726 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 727 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 728 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 729 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 730 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 731 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 732 strings[0] = NULL; 733 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 734 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 735 strings[0] = NULL; 736 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 737 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 738 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 739 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 740 strings[0] = NULL; 741 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 743 strings[1] = NULL; 744 745 /* of_property_read_string_array() tests */ 746 rc = of_property_read_string_array(np, "string-property", strings, 4); 747 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 748 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 749 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 750 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 751 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 752 /* -- An incorrectly formed string should cause a failure */ 753 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 754 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 755 /* -- parsing the correctly formed strings should still work: */ 756 strings[2] = NULL; 757 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 758 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 759 strings[1] = NULL; 760 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 761 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 762 } 763 764 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 765 (p1)->value && (p2)->value && \ 766 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 767 !strcmp((p1)->name, (p2)->name)) 768 static void __init of_unittest_property_copy(void) 769 { 770 #ifdef CONFIG_OF_DYNAMIC 771 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 772 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 773 struct property *new; 774 775 new = __of_prop_dup(&p1, GFP_KERNEL); 776 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 777 kfree(new->value); 778 kfree(new->name); 779 kfree(new); 780 781 new = __of_prop_dup(&p2, GFP_KERNEL); 782 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 783 kfree(new->value); 784 kfree(new->name); 785 kfree(new); 786 #endif 787 } 788 789 static void __init of_unittest_changeset(void) 790 { 791 #ifdef CONFIG_OF_DYNAMIC 792 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 793 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 794 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 795 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 796 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 797 struct property *ppremove; 798 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np; 799 struct of_changeset chgset; 800 801 n1 = __of_node_dup(NULL, "n1"); 802 unittest(n1, "testcase setup failure\n"); 803 804 n2 = __of_node_dup(NULL, "n2"); 805 unittest(n2, "testcase setup failure\n"); 806 807 n21 = __of_node_dup(NULL, "n21"); 808 unittest(n21, "testcase setup failure %p\n", n21); 809 810 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 811 nremove = of_get_child_by_name(nchangeset, "node-remove"); 812 unittest(nremove, "testcase setup failure\n"); 813 814 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 815 unittest(ppadd, "testcase setup failure\n"); 816 817 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 818 unittest(ppname_n1, "testcase setup failure\n"); 819 820 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 821 unittest(ppname_n2, "testcase setup failure\n"); 822 823 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 824 unittest(ppname_n21, "testcase setup failure\n"); 825 826 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 827 unittest(ppupdate, "testcase setup failure\n"); 828 829 parent = nchangeset; 830 n1->parent = parent; 831 n2->parent = parent; 832 n21->parent = n2; 833 834 ppremove = of_find_property(parent, "prop-remove", NULL); 835 unittest(ppremove, "failed to find removal prop"); 836 837 of_changeset_init(&chgset); 838 839 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 840 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 841 842 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 843 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 844 845 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 846 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 847 848 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 849 850 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 851 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 852 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 853 854 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 855 856 of_node_put(nchangeset); 857 858 /* Make sure node names are constructed correctly */ 859 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 860 "'%pOF' not added\n", n21); 861 of_node_put(np); 862 863 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 864 865 of_changeset_destroy(&chgset); 866 867 of_node_put(n1); 868 of_node_put(n2); 869 of_node_put(n21); 870 #endif 871 } 872 873 static void __init of_unittest_dma_get_max_cpu_address(void) 874 { 875 struct device_node *np; 876 phys_addr_t cpu_addr; 877 878 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 879 return; 880 881 np = of_find_node_by_path("/testcase-data/address-tests"); 882 if (!np) { 883 pr_err("missing testcase data\n"); 884 return; 885 } 886 887 cpu_addr = of_dma_get_max_cpu_address(np); 888 unittest(cpu_addr == 0x4fffffff, 889 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n", 890 &cpu_addr, 0x4fffffff); 891 } 892 893 static void __init of_unittest_dma_ranges_one(const char *path, 894 u64 expect_dma_addr, u64 expect_paddr) 895 { 896 #ifdef CONFIG_HAS_DMA 897 struct device_node *np; 898 const struct bus_dma_region *map = NULL; 899 int rc; 900 901 np = of_find_node_by_path(path); 902 if (!np) { 903 pr_err("missing testcase data\n"); 904 return; 905 } 906 907 rc = of_dma_get_range(np, &map); 908 909 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 910 911 if (!rc) { 912 phys_addr_t paddr; 913 dma_addr_t dma_addr; 914 struct device dev_bogus; 915 916 dev_bogus.dma_range_map = map; 917 paddr = dma_to_phys(&dev_bogus, expect_dma_addr); 918 dma_addr = phys_to_dma(&dev_bogus, expect_paddr); 919 920 unittest(paddr == expect_paddr, 921 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 922 &paddr, expect_paddr, np); 923 unittest(dma_addr == expect_dma_addr, 924 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 925 &dma_addr, expect_dma_addr, np); 926 927 kfree(map); 928 } 929 of_node_put(np); 930 #endif 931 } 932 933 static void __init of_unittest_parse_dma_ranges(void) 934 { 935 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 936 0x0, 0x20000000); 937 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 938 0x100000000, 0x20000000); 939 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 940 0x80000000, 0x20000000); 941 } 942 943 static void __init of_unittest_pci_dma_ranges(void) 944 { 945 struct device_node *np; 946 struct of_pci_range range; 947 struct of_pci_range_parser parser; 948 int i = 0; 949 950 if (!IS_ENABLED(CONFIG_PCI)) 951 return; 952 953 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 954 if (!np) { 955 pr_err("missing testcase data\n"); 956 return; 957 } 958 959 if (of_pci_dma_range_parser_init(&parser, np)) { 960 pr_err("missing dma-ranges property\n"); 961 return; 962 } 963 964 /* 965 * Get the dma-ranges from the device tree 966 */ 967 for_each_of_pci_range(&parser, &range) { 968 if (!i) { 969 unittest(range.size == 0x10000000, 970 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 971 np, range.size); 972 unittest(range.cpu_addr == 0x20000000, 973 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 974 range.cpu_addr, np); 975 unittest(range.pci_addr == 0x80000000, 976 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 977 range.pci_addr, np); 978 } else { 979 unittest(range.size == 0x10000000, 980 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 981 np, range.size); 982 unittest(range.cpu_addr == 0x40000000, 983 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 984 range.cpu_addr, np); 985 unittest(range.pci_addr == 0xc0000000, 986 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 987 range.pci_addr, np); 988 } 989 i++; 990 } 991 992 of_node_put(np); 993 } 994 995 static void __init of_unittest_parse_interrupts(void) 996 { 997 struct device_node *np; 998 struct of_phandle_args args; 999 int i, rc; 1000 1001 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1002 return; 1003 1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 1005 if (!np) { 1006 pr_err("missing testcase data\n"); 1007 return; 1008 } 1009 1010 for (i = 0; i < 4; i++) { 1011 bool passed = true; 1012 1013 memset(&args, 0, sizeof(args)); 1014 rc = of_irq_parse_one(np, i, &args); 1015 1016 passed &= !rc; 1017 passed &= (args.args_count == 1); 1018 passed &= (args.args[0] == (i + 1)); 1019 1020 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1021 i, args.np, rc); 1022 } 1023 of_node_put(np); 1024 1025 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 1026 if (!np) { 1027 pr_err("missing testcase data\n"); 1028 return; 1029 } 1030 1031 for (i = 0; i < 4; i++) { 1032 bool passed = true; 1033 1034 memset(&args, 0, sizeof(args)); 1035 rc = of_irq_parse_one(np, i, &args); 1036 1037 /* Test the values from tests-phandle.dtsi */ 1038 switch (i) { 1039 case 0: 1040 passed &= !rc; 1041 passed &= (args.args_count == 1); 1042 passed &= (args.args[0] == 9); 1043 break; 1044 case 1: 1045 passed &= !rc; 1046 passed &= (args.args_count == 3); 1047 passed &= (args.args[0] == 10); 1048 passed &= (args.args[1] == 11); 1049 passed &= (args.args[2] == 12); 1050 break; 1051 case 2: 1052 passed &= !rc; 1053 passed &= (args.args_count == 2); 1054 passed &= (args.args[0] == 13); 1055 passed &= (args.args[1] == 14); 1056 break; 1057 case 3: 1058 passed &= !rc; 1059 passed &= (args.args_count == 2); 1060 passed &= (args.args[0] == 15); 1061 passed &= (args.args[1] == 16); 1062 break; 1063 default: 1064 passed = false; 1065 } 1066 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1067 i, args.np, rc); 1068 } 1069 of_node_put(np); 1070 } 1071 1072 static void __init of_unittest_parse_interrupts_extended(void) 1073 { 1074 struct device_node *np; 1075 struct of_phandle_args args; 1076 int i, rc; 1077 1078 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1079 return; 1080 1081 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1082 if (!np) { 1083 pr_err("missing testcase data\n"); 1084 return; 1085 } 1086 1087 for (i = 0; i < 7; i++) { 1088 bool passed = true; 1089 1090 memset(&args, 0, sizeof(args)); 1091 rc = of_irq_parse_one(np, i, &args); 1092 1093 /* Test the values from tests-phandle.dtsi */ 1094 switch (i) { 1095 case 0: 1096 passed &= !rc; 1097 passed &= (args.args_count == 1); 1098 passed &= (args.args[0] == 1); 1099 break; 1100 case 1: 1101 passed &= !rc; 1102 passed &= (args.args_count == 3); 1103 passed &= (args.args[0] == 2); 1104 passed &= (args.args[1] == 3); 1105 passed &= (args.args[2] == 4); 1106 break; 1107 case 2: 1108 passed &= !rc; 1109 passed &= (args.args_count == 2); 1110 passed &= (args.args[0] == 5); 1111 passed &= (args.args[1] == 6); 1112 break; 1113 case 3: 1114 passed &= !rc; 1115 passed &= (args.args_count == 1); 1116 passed &= (args.args[0] == 9); 1117 break; 1118 case 4: 1119 passed &= !rc; 1120 passed &= (args.args_count == 3); 1121 passed &= (args.args[0] == 10); 1122 passed &= (args.args[1] == 11); 1123 passed &= (args.args[2] == 12); 1124 break; 1125 case 5: 1126 passed &= !rc; 1127 passed &= (args.args_count == 2); 1128 passed &= (args.args[0] == 13); 1129 passed &= (args.args[1] == 14); 1130 break; 1131 case 6: 1132 passed &= !rc; 1133 passed &= (args.args_count == 1); 1134 passed &= (args.args[0] == 15); 1135 break; 1136 default: 1137 passed = false; 1138 } 1139 1140 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1141 i, args.np, rc); 1142 } 1143 of_node_put(np); 1144 } 1145 1146 static const struct of_device_id match_node_table[] = { 1147 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1148 { .data = "B", .type = "type1", }, /* followed by type alone */ 1149 1150 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1151 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1152 { .data = "Cc", .name = "name2", .type = "type2", }, 1153 1154 { .data = "E", .compatible = "compat3" }, 1155 { .data = "G", .compatible = "compat2", }, 1156 { .data = "H", .compatible = "compat2", .name = "name5", }, 1157 { .data = "I", .compatible = "compat2", .type = "type1", }, 1158 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1159 { .data = "K", .compatible = "compat2", .name = "name9", }, 1160 {} 1161 }; 1162 1163 static struct { 1164 const char *path; 1165 const char *data; 1166 } match_node_tests[] = { 1167 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1168 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1169 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1170 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1171 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1172 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1173 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1174 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1175 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1176 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1177 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1178 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1179 }; 1180 1181 static void __init of_unittest_match_node(void) 1182 { 1183 struct device_node *np; 1184 const struct of_device_id *match; 1185 int i; 1186 1187 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1188 np = of_find_node_by_path(match_node_tests[i].path); 1189 if (!np) { 1190 unittest(0, "missing testcase node %s\n", 1191 match_node_tests[i].path); 1192 continue; 1193 } 1194 1195 match = of_match_node(match_node_table, np); 1196 if (!match) { 1197 unittest(0, "%s didn't match anything\n", 1198 match_node_tests[i].path); 1199 continue; 1200 } 1201 1202 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1203 unittest(0, "%s got wrong match. expected %s, got %s\n", 1204 match_node_tests[i].path, match_node_tests[i].data, 1205 (const char *)match->data); 1206 continue; 1207 } 1208 unittest(1, "passed"); 1209 } 1210 } 1211 1212 static struct resource test_bus_res = { 1213 .start = 0xfffffff8, 1214 .end = 0xfffffff9, 1215 .flags = IORESOURCE_MEM, 1216 }; 1217 static const struct platform_device_info test_bus_info = { 1218 .name = "unittest-bus", 1219 }; 1220 static void __init of_unittest_platform_populate(void) 1221 { 1222 int irq, rc; 1223 struct device_node *np, *child, *grandchild; 1224 struct platform_device *pdev, *test_bus; 1225 const struct of_device_id match[] = { 1226 { .compatible = "test-device", }, 1227 {} 1228 }; 1229 1230 np = of_find_node_by_path("/testcase-data"); 1231 of_platform_default_populate(np, NULL, NULL); 1232 1233 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1234 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1235 pdev = of_find_device_by_node(np); 1236 unittest(pdev, "device 1 creation failed\n"); 1237 1238 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1239 irq = platform_get_irq(pdev, 0); 1240 unittest(irq == -EPROBE_DEFER, 1241 "device deferred probe failed - %d\n", irq); 1242 1243 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1244 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1245 pdev = of_find_device_by_node(np); 1246 unittest(pdev, "device 2 creation failed\n"); 1247 1248 EXPECT_BEGIN(KERN_INFO, 1249 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1250 1251 irq = platform_get_irq(pdev, 0); 1252 1253 EXPECT_END(KERN_INFO, 1254 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1255 1256 unittest(irq < 0 && irq != -EPROBE_DEFER, 1257 "device parsing error failed - %d\n", irq); 1258 } 1259 1260 np = of_find_node_by_path("/testcase-data/platform-tests"); 1261 unittest(np, "No testcase data in device tree\n"); 1262 if (!np) 1263 return; 1264 1265 test_bus = platform_device_register_full(&test_bus_info); 1266 rc = PTR_ERR_OR_ZERO(test_bus); 1267 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1268 if (rc) { 1269 of_node_put(np); 1270 return; 1271 } 1272 test_bus->dev.of_node = np; 1273 1274 /* 1275 * Add a dummy resource to the test bus node after it is 1276 * registered to catch problems with un-inserted resources. The 1277 * DT code doesn't insert the resources, and it has caused the 1278 * kernel to oops in the past. This makes sure the same bug 1279 * doesn't crop up again. 1280 */ 1281 platform_device_add_resources(test_bus, &test_bus_res, 1); 1282 1283 of_platform_populate(np, match, NULL, &test_bus->dev); 1284 for_each_child_of_node(np, child) { 1285 for_each_child_of_node(child, grandchild) { 1286 pdev = of_find_device_by_node(grandchild); 1287 unittest(pdev, 1288 "Could not create device for node '%pOFn'\n", 1289 grandchild); 1290 platform_device_put(pdev); 1291 } 1292 } 1293 1294 of_platform_depopulate(&test_bus->dev); 1295 for_each_child_of_node(np, child) { 1296 for_each_child_of_node(child, grandchild) 1297 unittest(!of_find_device_by_node(grandchild), 1298 "device didn't get destroyed '%pOFn'\n", 1299 grandchild); 1300 } 1301 1302 platform_device_unregister(test_bus); 1303 of_node_put(np); 1304 } 1305 1306 /** 1307 * update_node_properties - adds the properties 1308 * of np into dup node (present in live tree) and 1309 * updates parent of children of np to dup. 1310 * 1311 * @np: node whose properties are being added to the live tree 1312 * @dup: node present in live tree to be updated 1313 */ 1314 static void update_node_properties(struct device_node *np, 1315 struct device_node *dup) 1316 { 1317 struct property *prop; 1318 struct property *save_next; 1319 struct device_node *child; 1320 int ret; 1321 1322 for_each_child_of_node(np, child) 1323 child->parent = dup; 1324 1325 /* 1326 * "unittest internal error: unable to add testdata property" 1327 * 1328 * If this message reports a property in node '/__symbols__' then 1329 * the respective unittest overlay contains a label that has the 1330 * same name as a label in the live devicetree. The label will 1331 * be in the live devicetree only if the devicetree source was 1332 * compiled with the '-@' option. If you encounter this error, 1333 * please consider renaming __all__ of the labels in the unittest 1334 * overlay dts files with an odd prefix that is unlikely to be 1335 * used in a real devicetree. 1336 */ 1337 1338 /* 1339 * open code for_each_property_of_node() because of_add_property() 1340 * sets prop->next to NULL 1341 */ 1342 for (prop = np->properties; prop != NULL; prop = save_next) { 1343 save_next = prop->next; 1344 ret = of_add_property(dup, prop); 1345 if (ret) { 1346 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1347 continue; 1348 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1349 np, prop->name); 1350 } 1351 } 1352 } 1353 1354 /** 1355 * attach_node_and_children - attaches nodes 1356 * and its children to live tree. 1357 * CAUTION: misleading function name - if node @np already exists in 1358 * the live tree then children of @np are *not* attached to the live 1359 * tree. This works for the current test devicetree nodes because such 1360 * nodes do not have child nodes. 1361 * 1362 * @np: Node to attach to live tree 1363 */ 1364 static void attach_node_and_children(struct device_node *np) 1365 { 1366 struct device_node *next, *dup, *child; 1367 unsigned long flags; 1368 const char *full_name; 1369 1370 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1371 1372 if (!strcmp(full_name, "/__local_fixups__") || 1373 !strcmp(full_name, "/__fixups__")) { 1374 kfree(full_name); 1375 return; 1376 } 1377 1378 dup = of_find_node_by_path(full_name); 1379 kfree(full_name); 1380 if (dup) { 1381 update_node_properties(np, dup); 1382 return; 1383 } 1384 1385 child = np->child; 1386 np->child = NULL; 1387 1388 mutex_lock(&of_mutex); 1389 raw_spin_lock_irqsave(&devtree_lock, flags); 1390 np->sibling = np->parent->child; 1391 np->parent->child = np; 1392 of_node_clear_flag(np, OF_DETACHED); 1393 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1394 1395 __of_attach_node_sysfs(np); 1396 mutex_unlock(&of_mutex); 1397 1398 while (child) { 1399 next = child->sibling; 1400 attach_node_and_children(child); 1401 child = next; 1402 } 1403 } 1404 1405 /** 1406 * unittest_data_add - Reads, copies data from 1407 * linked tree and attaches it to the live tree 1408 */ 1409 static int __init unittest_data_add(void) 1410 { 1411 void *unittest_data; 1412 void *unittest_data_align; 1413 struct device_node *unittest_data_node = NULL, *np; 1414 /* 1415 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1416 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1417 */ 1418 extern uint8_t __dtb_testcases_begin[]; 1419 extern uint8_t __dtb_testcases_end[]; 1420 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1421 int rc; 1422 void *ret; 1423 1424 if (!size) { 1425 pr_warn("%s: testcases is empty\n", __func__); 1426 return -ENODATA; 1427 } 1428 1429 /* creating copy */ 1430 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL); 1431 if (!unittest_data) 1432 return -ENOMEM; 1433 1434 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE); 1435 memcpy(unittest_data_align, __dtb_testcases_begin, size); 1436 1437 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node); 1438 if (!ret) { 1439 pr_warn("%s: unflatten testcases tree failed\n", __func__); 1440 kfree(unittest_data); 1441 return -ENODATA; 1442 } 1443 if (!unittest_data_node) { 1444 pr_warn("%s: testcases tree is empty\n", __func__); 1445 kfree(unittest_data); 1446 return -ENODATA; 1447 } 1448 1449 /* 1450 * This lock normally encloses of_resolve_phandles() 1451 */ 1452 of_overlay_mutex_lock(); 1453 1454 rc = of_resolve_phandles(unittest_data_node); 1455 if (rc) { 1456 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1457 of_overlay_mutex_unlock(); 1458 return -EINVAL; 1459 } 1460 1461 if (!of_root) { 1462 of_root = unittest_data_node; 1463 for_each_of_allnodes(np) 1464 __of_attach_node_sysfs(np); 1465 of_aliases = of_find_node_by_path("/aliases"); 1466 of_chosen = of_find_node_by_path("/chosen"); 1467 of_overlay_mutex_unlock(); 1468 return 0; 1469 } 1470 1471 EXPECT_BEGIN(KERN_INFO, 1472 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1473 1474 /* attach the sub-tree to live tree */ 1475 np = unittest_data_node->child; 1476 while (np) { 1477 struct device_node *next = np->sibling; 1478 1479 np->parent = of_root; 1480 attach_node_and_children(np); 1481 np = next; 1482 } 1483 1484 EXPECT_END(KERN_INFO, 1485 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1486 1487 of_overlay_mutex_unlock(); 1488 1489 return 0; 1490 } 1491 1492 #ifdef CONFIG_OF_OVERLAY 1493 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1494 1495 static int unittest_probe(struct platform_device *pdev) 1496 { 1497 struct device *dev = &pdev->dev; 1498 struct device_node *np = dev->of_node; 1499 1500 if (np == NULL) { 1501 dev_err(dev, "No OF data for device\n"); 1502 return -EINVAL; 1503 1504 } 1505 1506 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1507 1508 of_platform_populate(np, NULL, NULL, &pdev->dev); 1509 1510 return 0; 1511 } 1512 1513 static int unittest_remove(struct platform_device *pdev) 1514 { 1515 struct device *dev = &pdev->dev; 1516 struct device_node *np = dev->of_node; 1517 1518 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1519 return 0; 1520 } 1521 1522 static const struct of_device_id unittest_match[] = { 1523 { .compatible = "unittest", }, 1524 {}, 1525 }; 1526 1527 static struct platform_driver unittest_driver = { 1528 .probe = unittest_probe, 1529 .remove = unittest_remove, 1530 .driver = { 1531 .name = "unittest", 1532 .of_match_table = of_match_ptr(unittest_match), 1533 }, 1534 }; 1535 1536 /* get the platform device instantiated at the path */ 1537 static struct platform_device *of_path_to_platform_device(const char *path) 1538 { 1539 struct device_node *np; 1540 struct platform_device *pdev; 1541 1542 np = of_find_node_by_path(path); 1543 if (np == NULL) 1544 return NULL; 1545 1546 pdev = of_find_device_by_node(np); 1547 of_node_put(np); 1548 1549 return pdev; 1550 } 1551 1552 /* find out if a platform device exists at that path */ 1553 static int of_path_platform_device_exists(const char *path) 1554 { 1555 struct platform_device *pdev; 1556 1557 pdev = of_path_to_platform_device(path); 1558 platform_device_put(pdev); 1559 return pdev != NULL; 1560 } 1561 1562 #ifdef CONFIG_OF_GPIO 1563 1564 struct unittest_gpio_dev { 1565 struct gpio_chip chip; 1566 }; 1567 1568 static int unittest_gpio_chip_request_count; 1569 static int unittest_gpio_probe_count; 1570 static int unittest_gpio_probe_pass_count; 1571 1572 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1573 { 1574 unittest_gpio_chip_request_count++; 1575 1576 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1577 unittest_gpio_chip_request_count); 1578 return 0; 1579 } 1580 1581 static int unittest_gpio_probe(struct platform_device *pdev) 1582 { 1583 struct unittest_gpio_dev *devptr; 1584 int ret; 1585 1586 unittest_gpio_probe_count++; 1587 1588 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1589 if (!devptr) 1590 return -ENOMEM; 1591 1592 platform_set_drvdata(pdev, devptr); 1593 1594 devptr->chip.of_node = pdev->dev.of_node; 1595 devptr->chip.label = "of-unittest-gpio"; 1596 devptr->chip.base = -1; /* dynamic allocation */ 1597 devptr->chip.ngpio = 5; 1598 devptr->chip.request = unittest_gpio_chip_request; 1599 1600 ret = gpiochip_add_data(&devptr->chip, NULL); 1601 1602 unittest(!ret, 1603 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1604 1605 if (!ret) 1606 unittest_gpio_probe_pass_count++; 1607 return ret; 1608 } 1609 1610 static int unittest_gpio_remove(struct platform_device *pdev) 1611 { 1612 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1613 struct device *dev = &pdev->dev; 1614 struct device_node *np = pdev->dev.of_node; 1615 1616 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1617 1618 if (!gdev) 1619 return -EINVAL; 1620 1621 if (gdev->chip.base != -1) 1622 gpiochip_remove(&gdev->chip); 1623 1624 platform_set_drvdata(pdev, NULL); 1625 kfree(gdev); 1626 1627 return 0; 1628 } 1629 1630 static const struct of_device_id unittest_gpio_id[] = { 1631 { .compatible = "unittest-gpio", }, 1632 {} 1633 }; 1634 1635 static struct platform_driver unittest_gpio_driver = { 1636 .probe = unittest_gpio_probe, 1637 .remove = unittest_gpio_remove, 1638 .driver = { 1639 .name = "unittest-gpio", 1640 .of_match_table = of_match_ptr(unittest_gpio_id), 1641 }, 1642 }; 1643 1644 static void __init of_unittest_overlay_gpio(void) 1645 { 1646 int chip_request_count; 1647 int probe_pass_count; 1648 int ret; 1649 1650 /* 1651 * tests: apply overlays before registering driver 1652 * Similar to installing a driver as a module, the 1653 * driver is registered after applying the overlays. 1654 * 1655 * The overlays are applied by overlay_data_apply() 1656 * instead of of_unittest_apply_overlay() so that they 1657 * will not be tracked. Thus they will not be removed 1658 * by of_unittest_destroy_tracked_overlays(). 1659 * 1660 * - apply overlay_gpio_01 1661 * - apply overlay_gpio_02a 1662 * - apply overlay_gpio_02b 1663 * - register driver 1664 * 1665 * register driver will result in 1666 * - probe and processing gpio hog for overlay_gpio_01 1667 * - probe for overlay_gpio_02a 1668 * - processing gpio for overlay_gpio_02b 1669 */ 1670 1671 probe_pass_count = unittest_gpio_probe_pass_count; 1672 chip_request_count = unittest_gpio_chip_request_count; 1673 1674 /* 1675 * overlay_gpio_01 contains gpio node and child gpio hog node 1676 * overlay_gpio_02a contains gpio node 1677 * overlay_gpio_02b contains child gpio hog node 1678 */ 1679 1680 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1681 "Adding overlay 'overlay_gpio_01' failed\n"); 1682 1683 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1684 "Adding overlay 'overlay_gpio_02a' failed\n"); 1685 1686 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1687 "Adding overlay 'overlay_gpio_02b' failed\n"); 1688 1689 /* 1690 * messages are the result of the probes, after the 1691 * driver is registered 1692 */ 1693 1694 EXPECT_BEGIN(KERN_INFO, 1695 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1696 1697 EXPECT_BEGIN(KERN_INFO, 1698 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1699 1700 ret = platform_driver_register(&unittest_gpio_driver); 1701 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1702 return; 1703 1704 EXPECT_END(KERN_INFO, 1705 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1706 EXPECT_END(KERN_INFO, 1707 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1708 1709 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1710 "unittest_gpio_probe() failed or not called\n"); 1711 1712 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1713 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1714 unittest_gpio_chip_request_count - chip_request_count); 1715 1716 /* 1717 * tests: apply overlays after registering driver 1718 * 1719 * Similar to a driver built-in to the kernel, the 1720 * driver is registered before applying the overlays. 1721 * 1722 * overlay_gpio_03 contains gpio node and child gpio hog node 1723 * 1724 * - apply overlay_gpio_03 1725 * 1726 * apply overlay will result in 1727 * - probe and processing gpio hog. 1728 */ 1729 1730 probe_pass_count = unittest_gpio_probe_pass_count; 1731 chip_request_count = unittest_gpio_chip_request_count; 1732 1733 EXPECT_BEGIN(KERN_INFO, 1734 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1735 1736 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1737 1738 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1739 "Adding overlay 'overlay_gpio_03' failed\n"); 1740 1741 EXPECT_END(KERN_INFO, 1742 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1743 1744 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1745 "unittest_gpio_probe() failed or not called\n"); 1746 1747 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1748 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1749 unittest_gpio_chip_request_count - chip_request_count); 1750 1751 /* 1752 * overlay_gpio_04a contains gpio node 1753 * 1754 * - apply overlay_gpio_04a 1755 * 1756 * apply the overlay will result in 1757 * - probe for overlay_gpio_04a 1758 */ 1759 1760 probe_pass_count = unittest_gpio_probe_pass_count; 1761 chip_request_count = unittest_gpio_chip_request_count; 1762 1763 /* overlay_gpio_04a contains gpio node */ 1764 1765 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1766 "Adding overlay 'overlay_gpio_04a' failed\n"); 1767 1768 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1769 "unittest_gpio_probe() failed or not called\n"); 1770 1771 /* 1772 * overlay_gpio_04b contains child gpio hog node 1773 * 1774 * - apply overlay_gpio_04b 1775 * 1776 * apply the overlay will result in 1777 * - processing gpio for overlay_gpio_04b 1778 */ 1779 1780 EXPECT_BEGIN(KERN_INFO, 1781 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1782 1783 /* overlay_gpio_04b contains child gpio hog node */ 1784 1785 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1786 "Adding overlay 'overlay_gpio_04b' failed\n"); 1787 1788 EXPECT_END(KERN_INFO, 1789 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1790 1791 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1792 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1793 unittest_gpio_chip_request_count - chip_request_count); 1794 } 1795 1796 #else 1797 1798 static void __init of_unittest_overlay_gpio(void) 1799 { 1800 /* skip tests */ 1801 } 1802 1803 #endif 1804 1805 #if IS_BUILTIN(CONFIG_I2C) 1806 1807 /* get the i2c client device instantiated at the path */ 1808 static struct i2c_client *of_path_to_i2c_client(const char *path) 1809 { 1810 struct device_node *np; 1811 struct i2c_client *client; 1812 1813 np = of_find_node_by_path(path); 1814 if (np == NULL) 1815 return NULL; 1816 1817 client = of_find_i2c_device_by_node(np); 1818 of_node_put(np); 1819 1820 return client; 1821 } 1822 1823 /* find out if a i2c client device exists at that path */ 1824 static int of_path_i2c_client_exists(const char *path) 1825 { 1826 struct i2c_client *client; 1827 1828 client = of_path_to_i2c_client(path); 1829 if (client) 1830 put_device(&client->dev); 1831 return client != NULL; 1832 } 1833 #else 1834 static int of_path_i2c_client_exists(const char *path) 1835 { 1836 return 0; 1837 } 1838 #endif 1839 1840 enum overlay_type { 1841 PDEV_OVERLAY, 1842 I2C_OVERLAY 1843 }; 1844 1845 static int of_path_device_type_exists(const char *path, 1846 enum overlay_type ovtype) 1847 { 1848 switch (ovtype) { 1849 case PDEV_OVERLAY: 1850 return of_path_platform_device_exists(path); 1851 case I2C_OVERLAY: 1852 return of_path_i2c_client_exists(path); 1853 } 1854 return 0; 1855 } 1856 1857 static const char *unittest_path(int nr, enum overlay_type ovtype) 1858 { 1859 const char *base; 1860 static char buf[256]; 1861 1862 switch (ovtype) { 1863 case PDEV_OVERLAY: 1864 base = "/testcase-data/overlay-node/test-bus"; 1865 break; 1866 case I2C_OVERLAY: 1867 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1868 break; 1869 default: 1870 buf[0] = '\0'; 1871 return buf; 1872 } 1873 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1874 buf[sizeof(buf) - 1] = '\0'; 1875 return buf; 1876 } 1877 1878 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1879 { 1880 const char *path; 1881 1882 path = unittest_path(unittest_nr, ovtype); 1883 1884 switch (ovtype) { 1885 case PDEV_OVERLAY: 1886 return of_path_platform_device_exists(path); 1887 case I2C_OVERLAY: 1888 return of_path_i2c_client_exists(path); 1889 } 1890 return 0; 1891 } 1892 1893 static const char *overlay_name_from_nr(int nr) 1894 { 1895 static char buf[256]; 1896 1897 snprintf(buf, sizeof(buf) - 1, 1898 "overlay_%d", nr); 1899 buf[sizeof(buf) - 1] = '\0'; 1900 1901 return buf; 1902 } 1903 1904 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1905 1906 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */ 1907 1908 #define MAX_UNITTEST_OVERLAYS 256 1909 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1910 static int overlay_first_id = -1; 1911 1912 static long of_unittest_overlay_tracked(int id) 1913 { 1914 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1915 return 0; 1916 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id); 1917 } 1918 1919 static void of_unittest_track_overlay(int id) 1920 { 1921 if (overlay_first_id < 0) 1922 overlay_first_id = id; 1923 id -= overlay_first_id; 1924 1925 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1926 return; 1927 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1928 } 1929 1930 static void of_unittest_untrack_overlay(int id) 1931 { 1932 if (overlay_first_id < 0) 1933 return; 1934 id -= overlay_first_id; 1935 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1936 return; 1937 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1938 } 1939 1940 static void of_unittest_destroy_tracked_overlays(void) 1941 { 1942 int id, ret, defers, ovcs_id; 1943 1944 if (overlay_first_id < 0) 1945 return; 1946 1947 /* try until no defers */ 1948 do { 1949 defers = 0; 1950 /* remove in reverse order */ 1951 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1952 if (!of_unittest_overlay_tracked(id)) 1953 continue; 1954 1955 ovcs_id = id + overlay_first_id; 1956 ret = of_overlay_remove(&ovcs_id); 1957 if (ret == -ENODEV) { 1958 pr_warn("%s: no overlay to destroy for #%d\n", 1959 __func__, id + overlay_first_id); 1960 continue; 1961 } 1962 if (ret != 0) { 1963 defers++; 1964 pr_warn("%s: overlay destroy failed for #%d\n", 1965 __func__, id + overlay_first_id); 1966 continue; 1967 } 1968 1969 of_unittest_untrack_overlay(id); 1970 } 1971 } while (defers > 0); 1972 } 1973 1974 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1975 { 1976 const char *overlay_name; 1977 1978 overlay_name = overlay_name_from_nr(overlay_nr); 1979 1980 if (!overlay_data_apply(overlay_name, overlay_id)) { 1981 unittest(0, "could not apply overlay \"%s\"\n", 1982 overlay_name); 1983 return -EFAULT; 1984 } 1985 of_unittest_track_overlay(*overlay_id); 1986 1987 return 0; 1988 } 1989 1990 /* apply an overlay while checking before and after states */ 1991 static int __init of_unittest_apply_overlay_check(int overlay_nr, 1992 int unittest_nr, int before, int after, 1993 enum overlay_type ovtype) 1994 { 1995 int ret, ovcs_id; 1996 1997 /* unittest device must not be in before state */ 1998 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1999 unittest(0, "%s with device @\"%s\" %s\n", 2000 overlay_name_from_nr(overlay_nr), 2001 unittest_path(unittest_nr, ovtype), 2002 !before ? "enabled" : "disabled"); 2003 return -EINVAL; 2004 } 2005 2006 ovcs_id = 0; 2007 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2008 if (ret != 0) { 2009 /* of_unittest_apply_overlay already called unittest() */ 2010 return ret; 2011 } 2012 2013 /* unittest device must be to set to after state */ 2014 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2015 unittest(0, "%s failed to create @\"%s\" %s\n", 2016 overlay_name_from_nr(overlay_nr), 2017 unittest_path(unittest_nr, ovtype), 2018 !after ? "enabled" : "disabled"); 2019 return -EINVAL; 2020 } 2021 2022 return 0; 2023 } 2024 2025 /* apply an overlay and then revert it while checking before, after states */ 2026 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2027 int unittest_nr, int before, int after, 2028 enum overlay_type ovtype) 2029 { 2030 int ret, ovcs_id, save_id; 2031 2032 /* unittest device must be in before state */ 2033 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2034 unittest(0, "%s with device @\"%s\" %s\n", 2035 overlay_name_from_nr(overlay_nr), 2036 unittest_path(unittest_nr, ovtype), 2037 !before ? "enabled" : "disabled"); 2038 return -EINVAL; 2039 } 2040 2041 /* apply the overlay */ 2042 ovcs_id = 0; 2043 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2044 if (ret != 0) { 2045 /* of_unittest_apply_overlay already called unittest() */ 2046 return ret; 2047 } 2048 2049 /* unittest device must be in after state */ 2050 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2051 unittest(0, "%s failed to create @\"%s\" %s\n", 2052 overlay_name_from_nr(overlay_nr), 2053 unittest_path(unittest_nr, ovtype), 2054 !after ? "enabled" : "disabled"); 2055 return -EINVAL; 2056 } 2057 2058 save_id = ovcs_id; 2059 ret = of_overlay_remove(&ovcs_id); 2060 if (ret != 0) { 2061 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2062 overlay_name_from_nr(overlay_nr), 2063 unittest_path(unittest_nr, ovtype)); 2064 return ret; 2065 } 2066 of_unittest_untrack_overlay(save_id); 2067 2068 /* unittest device must be again in before state */ 2069 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2070 unittest(0, "%s with device @\"%s\" %s\n", 2071 overlay_name_from_nr(overlay_nr), 2072 unittest_path(unittest_nr, ovtype), 2073 !before ? "enabled" : "disabled"); 2074 return -EINVAL; 2075 } 2076 2077 return 0; 2078 } 2079 2080 /* test activation of device */ 2081 static void __init of_unittest_overlay_0(void) 2082 { 2083 int ret; 2084 2085 EXPECT_BEGIN(KERN_INFO, 2086 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2087 2088 /* device should enable */ 2089 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2090 2091 EXPECT_END(KERN_INFO, 2092 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2093 2094 if (ret) 2095 return; 2096 2097 unittest(1, "overlay test %d passed\n", 0); 2098 } 2099 2100 /* test deactivation of device */ 2101 static void __init of_unittest_overlay_1(void) 2102 { 2103 int ret; 2104 2105 EXPECT_BEGIN(KERN_INFO, 2106 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2107 2108 /* device should disable */ 2109 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2110 2111 EXPECT_END(KERN_INFO, 2112 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2113 2114 if (ret) 2115 return; 2116 2117 unittest(1, "overlay test %d passed\n", 1); 2118 2119 } 2120 2121 /* test activation of device */ 2122 static void __init of_unittest_overlay_2(void) 2123 { 2124 int ret; 2125 2126 EXPECT_BEGIN(KERN_INFO, 2127 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2128 2129 /* device should enable */ 2130 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2131 2132 EXPECT_END(KERN_INFO, 2133 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2134 2135 if (ret) 2136 return; 2137 unittest(1, "overlay test %d passed\n", 2); 2138 } 2139 2140 /* test deactivation of device */ 2141 static void __init of_unittest_overlay_3(void) 2142 { 2143 int ret; 2144 2145 EXPECT_BEGIN(KERN_INFO, 2146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2147 2148 /* device should disable */ 2149 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2150 2151 EXPECT_END(KERN_INFO, 2152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2153 2154 if (ret) 2155 return; 2156 2157 unittest(1, "overlay test %d passed\n", 3); 2158 } 2159 2160 /* test activation of a full device node */ 2161 static void __init of_unittest_overlay_4(void) 2162 { 2163 /* device should disable */ 2164 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2165 return; 2166 2167 unittest(1, "overlay test %d passed\n", 4); 2168 } 2169 2170 /* test overlay apply/revert sequence */ 2171 static void __init of_unittest_overlay_5(void) 2172 { 2173 int ret; 2174 2175 EXPECT_BEGIN(KERN_INFO, 2176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2177 2178 /* device should disable */ 2179 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2180 2181 EXPECT_END(KERN_INFO, 2182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2183 2184 if (ret) 2185 return; 2186 2187 unittest(1, "overlay test %d passed\n", 5); 2188 } 2189 2190 /* test overlay application in sequence */ 2191 static void __init of_unittest_overlay_6(void) 2192 { 2193 int i, ov_id[2], ovcs_id; 2194 int overlay_nr = 6, unittest_nr = 6; 2195 int before = 0, after = 1; 2196 const char *overlay_name; 2197 2198 int ret; 2199 2200 /* unittest device must be in before state */ 2201 for (i = 0; i < 2; i++) { 2202 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2203 != before) { 2204 unittest(0, "%s with device @\"%s\" %s\n", 2205 overlay_name_from_nr(overlay_nr + i), 2206 unittest_path(unittest_nr + i, 2207 PDEV_OVERLAY), 2208 !before ? "enabled" : "disabled"); 2209 return; 2210 } 2211 } 2212 2213 /* apply the overlays */ 2214 2215 EXPECT_BEGIN(KERN_INFO, 2216 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2217 2218 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2219 2220 ret = overlay_data_apply(overlay_name, &ovcs_id); 2221 2222 if (!ret) { 2223 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2224 return; 2225 } 2226 ov_id[0] = ovcs_id; 2227 of_unittest_track_overlay(ov_id[0]); 2228 2229 EXPECT_END(KERN_INFO, 2230 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2231 2232 EXPECT_BEGIN(KERN_INFO, 2233 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2234 2235 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2236 2237 ret = overlay_data_apply(overlay_name, &ovcs_id); 2238 2239 if (!ret) { 2240 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2241 return; 2242 } 2243 ov_id[1] = ovcs_id; 2244 of_unittest_track_overlay(ov_id[1]); 2245 2246 EXPECT_END(KERN_INFO, 2247 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2248 2249 2250 for (i = 0; i < 2; i++) { 2251 /* unittest device must be in after state */ 2252 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2253 != after) { 2254 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2255 overlay_name_from_nr(overlay_nr + i), 2256 unittest_path(unittest_nr + i, 2257 PDEV_OVERLAY), 2258 !after ? "enabled" : "disabled"); 2259 return; 2260 } 2261 } 2262 2263 for (i = 1; i >= 0; i--) { 2264 ovcs_id = ov_id[i]; 2265 if (of_overlay_remove(&ovcs_id)) { 2266 unittest(0, "%s failed destroy @\"%s\"\n", 2267 overlay_name_from_nr(overlay_nr + i), 2268 unittest_path(unittest_nr + i, 2269 PDEV_OVERLAY)); 2270 return; 2271 } 2272 of_unittest_untrack_overlay(ov_id[i]); 2273 } 2274 2275 for (i = 0; i < 2; i++) { 2276 /* unittest device must be again in before state */ 2277 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2278 != before) { 2279 unittest(0, "%s with device @\"%s\" %s\n", 2280 overlay_name_from_nr(overlay_nr + i), 2281 unittest_path(unittest_nr + i, 2282 PDEV_OVERLAY), 2283 !before ? "enabled" : "disabled"); 2284 return; 2285 } 2286 } 2287 2288 unittest(1, "overlay test %d passed\n", 6); 2289 2290 } 2291 2292 /* test overlay application in sequence */ 2293 static void __init of_unittest_overlay_8(void) 2294 { 2295 int i, ov_id[2], ovcs_id; 2296 int overlay_nr = 8, unittest_nr = 8; 2297 const char *overlay_name; 2298 int ret; 2299 2300 /* we don't care about device state in this test */ 2301 2302 EXPECT_BEGIN(KERN_INFO, 2303 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2304 2305 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2306 2307 ret = overlay_data_apply(overlay_name, &ovcs_id); 2308 if (!ret) 2309 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2310 2311 EXPECT_END(KERN_INFO, 2312 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2313 2314 if (!ret) 2315 return; 2316 2317 ov_id[0] = ovcs_id; 2318 of_unittest_track_overlay(ov_id[0]); 2319 2320 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2321 2322 EXPECT_BEGIN(KERN_INFO, 2323 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2324 2325 /* apply the overlays */ 2326 ret = overlay_data_apply(overlay_name, &ovcs_id); 2327 2328 EXPECT_END(KERN_INFO, 2329 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2330 2331 if (!ret) { 2332 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2333 return; 2334 } 2335 2336 ov_id[1] = ovcs_id; 2337 of_unittest_track_overlay(ov_id[1]); 2338 2339 /* now try to remove first overlay (it should fail) */ 2340 ovcs_id = ov_id[0]; 2341 2342 EXPECT_BEGIN(KERN_INFO, 2343 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2344 2345 EXPECT_BEGIN(KERN_INFO, 2346 "OF: overlay: overlay #6 is not topmost"); 2347 2348 ret = of_overlay_remove(&ovcs_id); 2349 2350 EXPECT_END(KERN_INFO, 2351 "OF: overlay: overlay #6 is not topmost"); 2352 2353 EXPECT_END(KERN_INFO, 2354 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2355 2356 if (!ret) { 2357 unittest(0, "%s was destroyed @\"%s\"\n", 2358 overlay_name_from_nr(overlay_nr + 0), 2359 unittest_path(unittest_nr, 2360 PDEV_OVERLAY)); 2361 return; 2362 } 2363 2364 /* removing them in order should work */ 2365 for (i = 1; i >= 0; i--) { 2366 ovcs_id = ov_id[i]; 2367 if (of_overlay_remove(&ovcs_id)) { 2368 unittest(0, "%s not destroyed @\"%s\"\n", 2369 overlay_name_from_nr(overlay_nr + i), 2370 unittest_path(unittest_nr, 2371 PDEV_OVERLAY)); 2372 return; 2373 } 2374 of_unittest_untrack_overlay(ov_id[i]); 2375 } 2376 2377 unittest(1, "overlay test %d passed\n", 8); 2378 } 2379 2380 /* test insertion of a bus with parent devices */ 2381 static void __init of_unittest_overlay_10(void) 2382 { 2383 int ret; 2384 char *child_path; 2385 2386 /* device should disable */ 2387 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2388 2389 if (unittest(ret == 0, 2390 "overlay test %d failed; overlay application\n", 10)) 2391 return; 2392 2393 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2394 unittest_path(10, PDEV_OVERLAY)); 2395 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2396 return; 2397 2398 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2399 kfree(child_path); 2400 2401 unittest(ret, "overlay test %d failed; no child device\n", 10); 2402 } 2403 2404 /* test insertion of a bus with parent devices (and revert) */ 2405 static void __init of_unittest_overlay_11(void) 2406 { 2407 int ret; 2408 2409 /* device should disable */ 2410 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2411 PDEV_OVERLAY); 2412 2413 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2414 } 2415 2416 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2417 2418 struct unittest_i2c_bus_data { 2419 struct platform_device *pdev; 2420 struct i2c_adapter adap; 2421 }; 2422 2423 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2424 struct i2c_msg *msgs, int num) 2425 { 2426 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2427 2428 (void)std; 2429 2430 return num; 2431 } 2432 2433 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2434 { 2435 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2436 } 2437 2438 static const struct i2c_algorithm unittest_i2c_algo = { 2439 .master_xfer = unittest_i2c_master_xfer, 2440 .functionality = unittest_i2c_functionality, 2441 }; 2442 2443 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2444 { 2445 struct device *dev = &pdev->dev; 2446 struct device_node *np = dev->of_node; 2447 struct unittest_i2c_bus_data *std; 2448 struct i2c_adapter *adap; 2449 int ret; 2450 2451 if (np == NULL) { 2452 dev_err(dev, "No OF data for device\n"); 2453 return -EINVAL; 2454 2455 } 2456 2457 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2458 2459 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2460 if (!std) 2461 return -ENOMEM; 2462 2463 /* link them together */ 2464 std->pdev = pdev; 2465 platform_set_drvdata(pdev, std); 2466 2467 adap = &std->adap; 2468 i2c_set_adapdata(adap, std); 2469 adap->nr = -1; 2470 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2471 adap->class = I2C_CLASS_DEPRECATED; 2472 adap->algo = &unittest_i2c_algo; 2473 adap->dev.parent = dev; 2474 adap->dev.of_node = dev->of_node; 2475 adap->timeout = 5 * HZ; 2476 adap->retries = 3; 2477 2478 ret = i2c_add_numbered_adapter(adap); 2479 if (ret != 0) { 2480 dev_err(dev, "Failed to add I2C adapter\n"); 2481 return ret; 2482 } 2483 2484 return 0; 2485 } 2486 2487 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2488 { 2489 struct device *dev = &pdev->dev; 2490 struct device_node *np = dev->of_node; 2491 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2492 2493 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2494 i2c_del_adapter(&std->adap); 2495 2496 return 0; 2497 } 2498 2499 static const struct of_device_id unittest_i2c_bus_match[] = { 2500 { .compatible = "unittest-i2c-bus", }, 2501 {}, 2502 }; 2503 2504 static struct platform_driver unittest_i2c_bus_driver = { 2505 .probe = unittest_i2c_bus_probe, 2506 .remove = unittest_i2c_bus_remove, 2507 .driver = { 2508 .name = "unittest-i2c-bus", 2509 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2510 }, 2511 }; 2512 2513 static int unittest_i2c_dev_probe(struct i2c_client *client, 2514 const struct i2c_device_id *id) 2515 { 2516 struct device *dev = &client->dev; 2517 struct device_node *np = client->dev.of_node; 2518 2519 if (!np) { 2520 dev_err(dev, "No OF node\n"); 2521 return -EINVAL; 2522 } 2523 2524 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2525 2526 return 0; 2527 }; 2528 2529 static int unittest_i2c_dev_remove(struct i2c_client *client) 2530 { 2531 struct device *dev = &client->dev; 2532 struct device_node *np = client->dev.of_node; 2533 2534 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2535 return 0; 2536 } 2537 2538 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2539 { .name = "unittest-i2c-dev" }, 2540 { } 2541 }; 2542 2543 static struct i2c_driver unittest_i2c_dev_driver = { 2544 .driver = { 2545 .name = "unittest-i2c-dev", 2546 }, 2547 .probe = unittest_i2c_dev_probe, 2548 .remove = unittest_i2c_dev_remove, 2549 .id_table = unittest_i2c_dev_id, 2550 }; 2551 2552 #if IS_BUILTIN(CONFIG_I2C_MUX) 2553 2554 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2555 { 2556 return 0; 2557 } 2558 2559 static int unittest_i2c_mux_probe(struct i2c_client *client, 2560 const struct i2c_device_id *id) 2561 { 2562 int i, nchans; 2563 struct device *dev = &client->dev; 2564 struct i2c_adapter *adap = client->adapter; 2565 struct device_node *np = client->dev.of_node, *child; 2566 struct i2c_mux_core *muxc; 2567 u32 reg, max_reg; 2568 2569 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2570 2571 if (!np) { 2572 dev_err(dev, "No OF node\n"); 2573 return -EINVAL; 2574 } 2575 2576 max_reg = (u32)-1; 2577 for_each_child_of_node(np, child) { 2578 if (of_property_read_u32(child, "reg", ®)) 2579 continue; 2580 if (max_reg == (u32)-1 || reg > max_reg) 2581 max_reg = reg; 2582 } 2583 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2584 if (nchans == 0) { 2585 dev_err(dev, "No channels\n"); 2586 return -EINVAL; 2587 } 2588 2589 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2590 unittest_i2c_mux_select_chan, NULL); 2591 if (!muxc) 2592 return -ENOMEM; 2593 for (i = 0; i < nchans; i++) { 2594 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2595 dev_err(dev, "Failed to register mux #%d\n", i); 2596 i2c_mux_del_adapters(muxc); 2597 return -ENODEV; 2598 } 2599 } 2600 2601 i2c_set_clientdata(client, muxc); 2602 2603 return 0; 2604 }; 2605 2606 static int unittest_i2c_mux_remove(struct i2c_client *client) 2607 { 2608 struct device *dev = &client->dev; 2609 struct device_node *np = client->dev.of_node; 2610 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2611 2612 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2613 i2c_mux_del_adapters(muxc); 2614 return 0; 2615 } 2616 2617 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2618 { .name = "unittest-i2c-mux" }, 2619 { } 2620 }; 2621 2622 static struct i2c_driver unittest_i2c_mux_driver = { 2623 .driver = { 2624 .name = "unittest-i2c-mux", 2625 }, 2626 .probe = unittest_i2c_mux_probe, 2627 .remove = unittest_i2c_mux_remove, 2628 .id_table = unittest_i2c_mux_id, 2629 }; 2630 2631 #endif 2632 2633 static int of_unittest_overlay_i2c_init(void) 2634 { 2635 int ret; 2636 2637 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2638 if (unittest(ret == 0, 2639 "could not register unittest i2c device driver\n")) 2640 return ret; 2641 2642 ret = platform_driver_register(&unittest_i2c_bus_driver); 2643 2644 if (unittest(ret == 0, 2645 "could not register unittest i2c bus driver\n")) 2646 return ret; 2647 2648 #if IS_BUILTIN(CONFIG_I2C_MUX) 2649 2650 EXPECT_BEGIN(KERN_INFO, 2651 "i2c i2c-1: Added multiplexed i2c bus 2"); 2652 2653 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2654 2655 EXPECT_END(KERN_INFO, 2656 "i2c i2c-1: Added multiplexed i2c bus 2"); 2657 2658 if (unittest(ret == 0, 2659 "could not register unittest i2c mux driver\n")) 2660 return ret; 2661 #endif 2662 2663 return 0; 2664 } 2665 2666 static void of_unittest_overlay_i2c_cleanup(void) 2667 { 2668 #if IS_BUILTIN(CONFIG_I2C_MUX) 2669 i2c_del_driver(&unittest_i2c_mux_driver); 2670 #endif 2671 platform_driver_unregister(&unittest_i2c_bus_driver); 2672 i2c_del_driver(&unittest_i2c_dev_driver); 2673 } 2674 2675 static void __init of_unittest_overlay_i2c_12(void) 2676 { 2677 int ret; 2678 2679 /* device should enable */ 2680 EXPECT_BEGIN(KERN_INFO, 2681 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2682 2683 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2684 2685 EXPECT_END(KERN_INFO, 2686 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2687 2688 if (ret) 2689 return; 2690 2691 unittest(1, "overlay test %d passed\n", 12); 2692 } 2693 2694 /* test deactivation of device */ 2695 static void __init of_unittest_overlay_i2c_13(void) 2696 { 2697 int ret; 2698 2699 EXPECT_BEGIN(KERN_INFO, 2700 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2701 2702 /* device should disable */ 2703 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2704 2705 EXPECT_END(KERN_INFO, 2706 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2707 2708 if (ret) 2709 return; 2710 2711 unittest(1, "overlay test %d passed\n", 13); 2712 } 2713 2714 /* just check for i2c mux existence */ 2715 static void of_unittest_overlay_i2c_14(void) 2716 { 2717 } 2718 2719 static void __init of_unittest_overlay_i2c_15(void) 2720 { 2721 int ret; 2722 2723 /* device should enable */ 2724 EXPECT_BEGIN(KERN_INFO, 2725 "i2c i2c-1: Added multiplexed i2c bus 3"); 2726 2727 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2728 2729 EXPECT_END(KERN_INFO, 2730 "i2c i2c-1: Added multiplexed i2c bus 3"); 2731 2732 if (ret) 2733 return; 2734 2735 unittest(1, "overlay test %d passed\n", 15); 2736 } 2737 2738 #else 2739 2740 static inline void of_unittest_overlay_i2c_14(void) { } 2741 static inline void of_unittest_overlay_i2c_15(void) { } 2742 2743 #endif 2744 2745 static void __init of_unittest_overlay(void) 2746 { 2747 struct device_node *bus_np = NULL; 2748 2749 if (platform_driver_register(&unittest_driver)) { 2750 unittest(0, "could not register unittest driver\n"); 2751 goto out; 2752 } 2753 2754 bus_np = of_find_node_by_path(bus_path); 2755 if (bus_np == NULL) { 2756 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2757 goto out; 2758 } 2759 2760 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2761 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2762 goto out; 2763 } 2764 2765 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2766 unittest(0, "could not find unittest0 @ \"%s\"\n", 2767 unittest_path(100, PDEV_OVERLAY)); 2768 goto out; 2769 } 2770 2771 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2772 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2773 unittest_path(101, PDEV_OVERLAY)); 2774 goto out; 2775 } 2776 2777 unittest(1, "basic infrastructure of overlays passed"); 2778 2779 /* tests in sequence */ 2780 of_unittest_overlay_0(); 2781 of_unittest_overlay_1(); 2782 of_unittest_overlay_2(); 2783 of_unittest_overlay_3(); 2784 of_unittest_overlay_4(); 2785 of_unittest_overlay_5(); 2786 of_unittest_overlay_6(); 2787 of_unittest_overlay_8(); 2788 2789 of_unittest_overlay_10(); 2790 of_unittest_overlay_11(); 2791 2792 #if IS_BUILTIN(CONFIG_I2C) 2793 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2794 goto out; 2795 2796 of_unittest_overlay_i2c_12(); 2797 of_unittest_overlay_i2c_13(); 2798 of_unittest_overlay_i2c_14(); 2799 of_unittest_overlay_i2c_15(); 2800 2801 of_unittest_overlay_i2c_cleanup(); 2802 #endif 2803 2804 of_unittest_overlay_gpio(); 2805 2806 of_unittest_destroy_tracked_overlays(); 2807 2808 out: 2809 of_node_put(bus_np); 2810 } 2811 2812 #else 2813 static inline void __init of_unittest_overlay(void) { } 2814 #endif 2815 2816 #ifdef CONFIG_OF_OVERLAY 2817 2818 /* 2819 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2820 * in scripts/Makefile.lib 2821 */ 2822 2823 #define OVERLAY_INFO_EXTERN(name) \ 2824 extern uint8_t __dtb_##name##_begin[]; \ 2825 extern uint8_t __dtb_##name##_end[] 2826 2827 #define OVERLAY_INFO(overlay_name, expected) \ 2828 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2829 .dtb_end = __dtb_##overlay_name##_end, \ 2830 .expected_result = expected, \ 2831 .name = #overlay_name, \ 2832 } 2833 2834 struct overlay_info { 2835 uint8_t *dtb_begin; 2836 uint8_t *dtb_end; 2837 int expected_result; 2838 int overlay_id; 2839 char *name; 2840 }; 2841 2842 OVERLAY_INFO_EXTERN(overlay_base); 2843 OVERLAY_INFO_EXTERN(overlay); 2844 OVERLAY_INFO_EXTERN(overlay_0); 2845 OVERLAY_INFO_EXTERN(overlay_1); 2846 OVERLAY_INFO_EXTERN(overlay_2); 2847 OVERLAY_INFO_EXTERN(overlay_3); 2848 OVERLAY_INFO_EXTERN(overlay_4); 2849 OVERLAY_INFO_EXTERN(overlay_5); 2850 OVERLAY_INFO_EXTERN(overlay_6); 2851 OVERLAY_INFO_EXTERN(overlay_7); 2852 OVERLAY_INFO_EXTERN(overlay_8); 2853 OVERLAY_INFO_EXTERN(overlay_9); 2854 OVERLAY_INFO_EXTERN(overlay_10); 2855 OVERLAY_INFO_EXTERN(overlay_11); 2856 OVERLAY_INFO_EXTERN(overlay_12); 2857 OVERLAY_INFO_EXTERN(overlay_13); 2858 OVERLAY_INFO_EXTERN(overlay_15); 2859 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2860 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2861 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2862 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2863 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2864 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2865 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2866 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2867 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2868 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2869 2870 /* entries found by name */ 2871 static struct overlay_info overlays[] = { 2872 OVERLAY_INFO(overlay_base, -9999), 2873 OVERLAY_INFO(overlay, 0), 2874 OVERLAY_INFO(overlay_0, 0), 2875 OVERLAY_INFO(overlay_1, 0), 2876 OVERLAY_INFO(overlay_2, 0), 2877 OVERLAY_INFO(overlay_3, 0), 2878 OVERLAY_INFO(overlay_4, 0), 2879 OVERLAY_INFO(overlay_5, 0), 2880 OVERLAY_INFO(overlay_6, 0), 2881 OVERLAY_INFO(overlay_7, 0), 2882 OVERLAY_INFO(overlay_8, 0), 2883 OVERLAY_INFO(overlay_9, 0), 2884 OVERLAY_INFO(overlay_10, 0), 2885 OVERLAY_INFO(overlay_11, 0), 2886 OVERLAY_INFO(overlay_12, 0), 2887 OVERLAY_INFO(overlay_13, 0), 2888 OVERLAY_INFO(overlay_15, 0), 2889 OVERLAY_INFO(overlay_gpio_01, 0), 2890 OVERLAY_INFO(overlay_gpio_02a, 0), 2891 OVERLAY_INFO(overlay_gpio_02b, 0), 2892 OVERLAY_INFO(overlay_gpio_03, 0), 2893 OVERLAY_INFO(overlay_gpio_04a, 0), 2894 OVERLAY_INFO(overlay_gpio_04b, 0), 2895 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2896 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2897 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2898 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2899 /* end marker */ 2900 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2901 }; 2902 2903 static struct device_node *overlay_base_root; 2904 2905 static void * __init dt_alloc_memory(u64 size, u64 align) 2906 { 2907 void *ptr = memblock_alloc(size, align); 2908 2909 if (!ptr) 2910 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2911 __func__, size, align); 2912 2913 return ptr; 2914 } 2915 2916 /* 2917 * Create base device tree for the overlay unittest. 2918 * 2919 * This is called from very early boot code. 2920 * 2921 * Do as much as possible the same way as done in __unflatten_device_tree 2922 * and other early boot steps for the normal FDT so that the overlay base 2923 * unflattened tree will have the same characteristics as the real tree 2924 * (such as having memory allocated by the early allocator). The goal 2925 * is to test "the real thing" as much as possible, and test "test setup 2926 * code" as little as possible. 2927 * 2928 * Have to stop before resolving phandles, because that uses kmalloc. 2929 */ 2930 void __init unittest_unflatten_overlay_base(void) 2931 { 2932 struct overlay_info *info; 2933 u32 data_size; 2934 void *new_fdt; 2935 u32 size; 2936 int found = 0; 2937 const char *overlay_name = "overlay_base"; 2938 2939 for (info = overlays; info && info->name; info++) { 2940 if (!strcmp(overlay_name, info->name)) { 2941 found = 1; 2942 break; 2943 } 2944 } 2945 if (!found) { 2946 pr_err("no overlay data for %s\n", overlay_name); 2947 return; 2948 } 2949 2950 info = &overlays[0]; 2951 2952 if (info->expected_result != -9999) { 2953 pr_err("No dtb 'overlay_base' to attach\n"); 2954 return; 2955 } 2956 2957 data_size = info->dtb_end - info->dtb_begin; 2958 if (!data_size) { 2959 pr_err("No dtb 'overlay_base' to attach\n"); 2960 return; 2961 } 2962 2963 size = fdt_totalsize(info->dtb_begin); 2964 if (size != data_size) { 2965 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2966 return; 2967 } 2968 2969 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2970 if (!new_fdt) { 2971 pr_err("alloc for dtb 'overlay_base' failed"); 2972 return; 2973 } 2974 2975 memcpy(new_fdt, info->dtb_begin, size); 2976 2977 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2978 dt_alloc_memory, true); 2979 } 2980 2981 /* 2982 * The purpose of of_unittest_overlay_data_add is to add an 2983 * overlay in the normal fashion. This is a test of the whole 2984 * picture, instead of testing individual elements. 2985 * 2986 * A secondary purpose is to be able to verify that the contents of 2987 * /proc/device-tree/ contains the updated structure and values from 2988 * the overlay. That must be verified separately in user space. 2989 * 2990 * Return 0 on unexpected error. 2991 */ 2992 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 2993 { 2994 struct overlay_info *info; 2995 int found = 0; 2996 int ret; 2997 u32 size; 2998 2999 for (info = overlays; info && info->name; info++) { 3000 if (!strcmp(overlay_name, info->name)) { 3001 found = 1; 3002 break; 3003 } 3004 } 3005 if (!found) { 3006 pr_err("no overlay data for %s\n", overlay_name); 3007 return 0; 3008 } 3009 3010 size = info->dtb_end - info->dtb_begin; 3011 if (!size) 3012 pr_err("no overlay data for %s\n", overlay_name); 3013 3014 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 3015 if (overlay_id) 3016 *overlay_id = info->overlay_id; 3017 if (ret < 0) 3018 goto out; 3019 3020 pr_debug("%s applied\n", overlay_name); 3021 3022 out: 3023 if (ret != info->expected_result) 3024 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3025 info->expected_result, ret, overlay_name); 3026 3027 return (ret == info->expected_result); 3028 } 3029 3030 /* 3031 * The purpose of of_unittest_overlay_high_level is to add an overlay 3032 * in the normal fashion. This is a test of the whole picture, 3033 * instead of individual elements. 3034 * 3035 * The first part of the function is _not_ normal overlay usage; it is 3036 * finishing splicing the base overlay device tree into the live tree. 3037 */ 3038 static __init void of_unittest_overlay_high_level(void) 3039 { 3040 struct device_node *last_sibling; 3041 struct device_node *np; 3042 struct device_node *of_symbols; 3043 struct device_node *overlay_base_symbols; 3044 struct device_node **pprev; 3045 struct property *prop; 3046 int ret; 3047 3048 if (!overlay_base_root) { 3049 unittest(0, "overlay_base_root not initialized\n"); 3050 return; 3051 } 3052 3053 /* 3054 * Could not fixup phandles in unittest_unflatten_overlay_base() 3055 * because kmalloc() was not yet available. 3056 */ 3057 of_overlay_mutex_lock(); 3058 of_resolve_phandles(overlay_base_root); 3059 of_overlay_mutex_unlock(); 3060 3061 3062 /* 3063 * do not allow overlay_base to duplicate any node already in 3064 * tree, this greatly simplifies the code 3065 */ 3066 3067 /* 3068 * remove overlay_base_root node "__local_fixups", after 3069 * being used by of_resolve_phandles() 3070 */ 3071 pprev = &overlay_base_root->child; 3072 for (np = overlay_base_root->child; np; np = np->sibling) { 3073 if (of_node_name_eq(np, "__local_fixups__")) { 3074 *pprev = np->sibling; 3075 break; 3076 } 3077 pprev = &np->sibling; 3078 } 3079 3080 /* remove overlay_base_root node "__symbols__" if in live tree */ 3081 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3082 if (of_symbols) { 3083 /* will have to graft properties from node into live tree */ 3084 pprev = &overlay_base_root->child; 3085 for (np = overlay_base_root->child; np; np = np->sibling) { 3086 if (of_node_name_eq(np, "__symbols__")) { 3087 overlay_base_symbols = np; 3088 *pprev = np->sibling; 3089 break; 3090 } 3091 pprev = &np->sibling; 3092 } 3093 } 3094 3095 for_each_child_of_node(overlay_base_root, np) { 3096 struct device_node *base_child; 3097 for_each_child_of_node(of_root, base_child) { 3098 if (!strcmp(np->full_name, base_child->full_name)) { 3099 unittest(0, "illegal node name in overlay_base %pOFn", 3100 np); 3101 return; 3102 } 3103 } 3104 } 3105 3106 /* 3107 * overlay 'overlay_base' is not allowed to have root 3108 * properties, so only need to splice nodes into main device tree. 3109 * 3110 * root node of *overlay_base_root will not be freed, it is lost 3111 * memory. 3112 */ 3113 3114 for (np = overlay_base_root->child; np; np = np->sibling) 3115 np->parent = of_root; 3116 3117 mutex_lock(&of_mutex); 3118 3119 for (last_sibling = np = of_root->child; np; np = np->sibling) 3120 last_sibling = np; 3121 3122 if (last_sibling) 3123 last_sibling->sibling = overlay_base_root->child; 3124 else 3125 of_root->child = overlay_base_root->child; 3126 3127 for_each_of_allnodes_from(overlay_base_root, np) 3128 __of_attach_node_sysfs(np); 3129 3130 if (of_symbols) { 3131 struct property *new_prop; 3132 for_each_property_of_node(overlay_base_symbols, prop) { 3133 3134 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3135 if (!new_prop) { 3136 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3137 prop->name); 3138 goto err_unlock; 3139 } 3140 if (__of_add_property(of_symbols, new_prop)) { 3141 kfree(new_prop->name); 3142 kfree(new_prop->value); 3143 kfree(new_prop); 3144 /* "name" auto-generated by unflatten */ 3145 if (!strcmp(prop->name, "name")) 3146 continue; 3147 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3148 prop->name); 3149 goto err_unlock; 3150 } 3151 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3152 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3153 prop->name); 3154 goto err_unlock; 3155 } 3156 } 3157 } 3158 3159 mutex_unlock(&of_mutex); 3160 3161 3162 /* now do the normal overlay usage test */ 3163 3164 EXPECT_BEGIN(KERN_ERR, 3165 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3166 EXPECT_BEGIN(KERN_ERR, 3167 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3168 EXPECT_BEGIN(KERN_ERR, 3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3170 EXPECT_BEGIN(KERN_ERR, 3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3172 EXPECT_BEGIN(KERN_ERR, 3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3174 EXPECT_BEGIN(KERN_ERR, 3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3176 EXPECT_BEGIN(KERN_ERR, 3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3178 EXPECT_BEGIN(KERN_ERR, 3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3180 EXPECT_BEGIN(KERN_ERR, 3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3182 EXPECT_BEGIN(KERN_ERR, 3183 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3184 EXPECT_BEGIN(KERN_ERR, 3185 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3186 3187 ret = overlay_data_apply("overlay", NULL); 3188 3189 EXPECT_END(KERN_ERR, 3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3191 EXPECT_END(KERN_ERR, 3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3193 EXPECT_END(KERN_ERR, 3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3195 EXPECT_END(KERN_ERR, 3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3197 EXPECT_END(KERN_ERR, 3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3199 EXPECT_END(KERN_ERR, 3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3201 EXPECT_END(KERN_ERR, 3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3203 EXPECT_END(KERN_ERR, 3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3205 EXPECT_END(KERN_ERR, 3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3207 EXPECT_END(KERN_ERR, 3208 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3209 EXPECT_END(KERN_ERR, 3210 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3211 3212 unittest(ret, "Adding overlay 'overlay' failed\n"); 3213 3214 EXPECT_BEGIN(KERN_ERR, 3215 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3216 EXPECT_BEGIN(KERN_ERR, 3217 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3218 3219 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3220 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3221 3222 EXPECT_END(KERN_ERR, 3223 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3224 EXPECT_END(KERN_ERR, 3225 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3226 3227 EXPECT_BEGIN(KERN_ERR, 3228 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3229 EXPECT_BEGIN(KERN_ERR, 3230 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3231 EXPECT_BEGIN(KERN_ERR, 3232 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3233 3234 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3235 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3236 3237 EXPECT_END(KERN_ERR, 3238 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3239 EXPECT_END(KERN_ERR, 3240 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3241 EXPECT_END(KERN_ERR, 3242 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3243 3244 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3245 "Adding overlay 'overlay_bad_phandle' failed\n"); 3246 3247 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3248 "Adding overlay 'overlay_bad_symbol' failed\n"); 3249 3250 return; 3251 3252 err_unlock: 3253 mutex_unlock(&of_mutex); 3254 } 3255 3256 #else 3257 3258 static inline __init void of_unittest_overlay_high_level(void) {} 3259 3260 #endif 3261 3262 static int __init of_unittest(void) 3263 { 3264 struct device_node *np; 3265 int res; 3266 3267 pr_info("start of unittest - you will see error messages\n"); 3268 3269 /* adding data for unittest */ 3270 3271 if (IS_ENABLED(CONFIG_UML)) 3272 unittest_unflatten_overlay_base(); 3273 3274 res = unittest_data_add(); 3275 if (res) 3276 return res; 3277 if (!of_aliases) 3278 of_aliases = of_find_node_by_path("/aliases"); 3279 3280 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3281 if (!np) { 3282 pr_info("No testcase data in device tree; not running tests\n"); 3283 return 0; 3284 } 3285 of_node_put(np); 3286 3287 of_unittest_check_tree_linkage(); 3288 of_unittest_check_phandles(); 3289 of_unittest_find_node_by_name(); 3290 of_unittest_dynamic(); 3291 of_unittest_parse_phandle_with_args(); 3292 of_unittest_parse_phandle_with_args_map(); 3293 of_unittest_printf(); 3294 of_unittest_property_string(); 3295 of_unittest_property_copy(); 3296 of_unittest_changeset(); 3297 of_unittest_parse_interrupts(); 3298 of_unittest_parse_interrupts_extended(); 3299 of_unittest_dma_get_max_cpu_address(); 3300 of_unittest_parse_dma_ranges(); 3301 of_unittest_pci_dma_ranges(); 3302 of_unittest_match_node(); 3303 of_unittest_platform_populate(); 3304 of_unittest_overlay(); 3305 3306 /* Double check linkage after removing testcase data */ 3307 of_unittest_check_tree_linkage(); 3308 3309 of_unittest_overlay_high_level(); 3310 3311 pr_info("end of unittest - %i passed, %i failed\n", 3312 unittest_results.passed, unittest_results.failed); 3313 3314 return 0; 3315 } 3316 late_initcall(of_unittest); 3317