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