1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Self tests for device tree subsystem 4 */ 5 6 #define pr_fmt(fmt) "### dt-test ### " fmt 7 8 #include <linux/memblock.h> 9 #include <linux/clk.h> 10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */ 11 #include <linux/err.h> 12 #include <linux/errno.h> 13 #include <linux/hashtable.h> 14 #include <linux/libfdt.h> 15 #include <linux/of.h> 16 #include <linux/of_address.h> 17 #include <linux/of_fdt.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <linux/list.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 #include <linux/kernel.h> 26 27 #include <linux/i2c.h> 28 #include <linux/i2c-mux.h> 29 #include <linux/gpio/driver.h> 30 31 #include <linux/bitops.h> 32 33 #include "of_private.h" 34 35 static struct unittest_results { 36 int passed; 37 int failed; 38 } unittest_results; 39 40 #define unittest(result, fmt, ...) ({ \ 41 bool failed = !(result); \ 42 if (failed) { \ 43 unittest_results.failed++; \ 44 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 45 } else { \ 46 unittest_results.passed++; \ 47 pr_debug("pass %s():%i\n", __func__, __LINE__); \ 48 } \ 49 failed; \ 50 }) 51 52 /* 53 * Expected message may have a message level other than KERN_INFO. 54 * Print the expected message only if the current loglevel will allow 55 * the actual message to print. 56 * 57 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by 58 * pr_debug(). 59 */ 60 #define EXPECT_BEGIN(level, fmt, ...) \ 61 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 62 63 #define EXPECT_END(level, fmt, ...) \ 64 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 65 66 static void __init of_unittest_find_node_by_name(void) 67 { 68 struct device_node *np; 69 const char *options, *name; 70 71 np = of_find_node_by_path("/testcase-data"); 72 name = kasprintf(GFP_KERNEL, "%pOF", np); 73 unittest(np && !strcmp("/testcase-data", name), 74 "find /testcase-data failed\n"); 75 of_node_put(np); 76 kfree(name); 77 78 /* Test if trailing '/' works */ 79 np = of_find_node_by_path("/testcase-data/"); 80 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 81 82 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 83 name = kasprintf(GFP_KERNEL, "%pOF", np); 84 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 85 "find /testcase-data/phandle-tests/consumer-a failed\n"); 86 of_node_put(np); 87 kfree(name); 88 89 np = of_find_node_by_path("testcase-alias"); 90 name = kasprintf(GFP_KERNEL, "%pOF", np); 91 unittest(np && !strcmp("/testcase-data", name), 92 "find testcase-alias failed\n"); 93 of_node_put(np); 94 kfree(name); 95 96 /* Test if trailing '/' works on aliases */ 97 np = of_find_node_by_path("testcase-alias/"); 98 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 99 100 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 101 name = kasprintf(GFP_KERNEL, "%pOF", np); 102 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 103 "find testcase-alias/phandle-tests/consumer-a failed\n"); 104 of_node_put(np); 105 kfree(name); 106 107 np = of_find_node_by_path("/testcase-data/missing-path"); 108 unittest(!np, "non-existent path returned node %pOF\n", np); 109 of_node_put(np); 110 111 np = of_find_node_by_path("missing-alias"); 112 unittest(!np, "non-existent alias returned node %pOF\n", np); 113 of_node_put(np); 114 115 np = of_find_node_by_path("testcase-alias/missing-path"); 116 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 117 of_node_put(np); 118 119 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 120 unittest(np && !strcmp("testoption", options), 121 "option path test failed\n"); 122 of_node_put(np); 123 124 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 125 unittest(np && !strcmp("test/option", options), 126 "option path test, subcase #1 failed\n"); 127 of_node_put(np); 128 129 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 130 unittest(np && !strcmp("test/option", options), 131 "option path test, subcase #2 failed\n"); 132 of_node_put(np); 133 134 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 135 unittest(np, "NULL option path test failed\n"); 136 of_node_put(np); 137 138 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 139 &options); 140 unittest(np && !strcmp("testaliasoption", options), 141 "option alias path test failed\n"); 142 of_node_put(np); 143 144 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 145 &options); 146 unittest(np && !strcmp("test/alias/option", options), 147 "option alias path test, subcase #1 failed\n"); 148 of_node_put(np); 149 150 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 151 unittest(np, "NULL option alias path test failed\n"); 152 of_node_put(np); 153 154 options = "testoption"; 155 np = of_find_node_opts_by_path("testcase-alias", &options); 156 unittest(np && !options, "option clearing test failed\n"); 157 of_node_put(np); 158 159 options = "testoption"; 160 np = of_find_node_opts_by_path("/", &options); 161 unittest(np && !options, "option clearing root node test failed\n"); 162 of_node_put(np); 163 } 164 165 static void __init of_unittest_dynamic(void) 166 { 167 struct device_node *np; 168 struct property *prop; 169 170 np = of_find_node_by_path("/testcase-data"); 171 if (!np) { 172 pr_err("missing testcase data\n"); 173 return; 174 } 175 176 /* Array of 4 properties for the purpose of testing */ 177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 178 if (!prop) { 179 unittest(0, "kzalloc() failed\n"); 180 return; 181 } 182 183 /* Add a new property - should pass*/ 184 prop->name = "new-property"; 185 prop->value = "new-property-data"; 186 prop->length = strlen(prop->value) + 1; 187 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 188 189 /* Try to add an existing property - should fail */ 190 prop++; 191 prop->name = "new-property"; 192 prop->value = "new-property-data-should-fail"; 193 prop->length = strlen(prop->value) + 1; 194 unittest(of_add_property(np, prop) != 0, 195 "Adding an existing property should have failed\n"); 196 197 /* Try to modify an existing property - should pass */ 198 prop->value = "modify-property-data-should-pass"; 199 prop->length = strlen(prop->value) + 1; 200 unittest(of_update_property(np, prop) == 0, 201 "Updating an existing property should have passed\n"); 202 203 /* Try to modify non-existent property - should pass*/ 204 prop++; 205 prop->name = "modify-property"; 206 prop->value = "modify-missing-property-data-should-pass"; 207 prop->length = strlen(prop->value) + 1; 208 unittest(of_update_property(np, prop) == 0, 209 "Updating a missing property should have passed\n"); 210 211 /* Remove property - should pass */ 212 unittest(of_remove_property(np, prop) == 0, 213 "Removing a property should have passed\n"); 214 215 /* Adding very large property - should pass */ 216 prop++; 217 prop->name = "large-property-PAGE_SIZEx8"; 218 prop->length = PAGE_SIZE * 8; 219 prop->value = kzalloc(prop->length, GFP_KERNEL); 220 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 221 if (prop->value) 222 unittest(of_add_property(np, prop) == 0, 223 "Adding a large property should have passed\n"); 224 } 225 226 static int __init of_unittest_check_node_linkage(struct device_node *np) 227 { 228 struct device_node *child; 229 int count = 0, rc; 230 231 for_each_child_of_node(np, child) { 232 if (child->parent != np) { 233 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 234 child, np); 235 rc = -EINVAL; 236 goto put_child; 237 } 238 239 rc = of_unittest_check_node_linkage(child); 240 if (rc < 0) 241 goto put_child; 242 count += rc; 243 } 244 245 return count + 1; 246 put_child: 247 of_node_put(child); 248 return rc; 249 } 250 251 static void __init of_unittest_check_tree_linkage(void) 252 { 253 struct device_node *np; 254 int allnode_count = 0, child_count; 255 256 if (!of_root) 257 return; 258 259 for_each_of_allnodes(np) 260 allnode_count++; 261 child_count = of_unittest_check_node_linkage(of_root); 262 263 unittest(child_count > 0, "Device node data structure is corrupted\n"); 264 unittest(child_count == allnode_count, 265 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 266 allnode_count, child_count); 267 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 268 } 269 270 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 271 const char *expected) 272 { 273 unsigned char *buf; 274 int buf_size; 275 int size, i; 276 277 buf_size = strlen(expected) + 10; 278 buf = kmalloc(buf_size, GFP_KERNEL); 279 if (!buf) 280 return; 281 282 /* Baseline; check conversion with a large size limit */ 283 memset(buf, 0xff, buf_size); 284 size = snprintf(buf, buf_size - 2, fmt, np); 285 286 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 287 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 288 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 289 fmt, expected, buf); 290 291 /* Make sure length limits work */ 292 size++; 293 for (i = 0; i < 2; i++, size--) { 294 /* Clear the buffer, and make sure it works correctly still */ 295 memset(buf, 0xff, buf_size); 296 snprintf(buf, size+1, fmt, np); 297 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 298 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 299 size, fmt, expected, buf); 300 } 301 kfree(buf); 302 } 303 304 static void __init of_unittest_printf(void) 305 { 306 struct device_node *np; 307 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 308 char phandle_str[16] = ""; 309 310 np = of_find_node_by_path(full_name); 311 if (!np) { 312 unittest(np, "testcase data missing\n"); 313 return; 314 } 315 316 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 317 318 of_unittest_printf_one(np, "%pOF", full_name); 319 of_unittest_printf_one(np, "%pOFf", full_name); 320 of_unittest_printf_one(np, "%pOFn", "dev"); 321 of_unittest_printf_one(np, "%2pOFn", "dev"); 322 of_unittest_printf_one(np, "%5pOFn", " dev"); 323 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 324 of_unittest_printf_one(np, "%pOFp", phandle_str); 325 of_unittest_printf_one(np, "%pOFP", "dev@100"); 326 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 327 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 328 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 329 of_unittest_printf_one(of_root, "%pOFP", "/"); 330 of_unittest_printf_one(np, "%pOFF", "----"); 331 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 332 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 333 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 334 of_unittest_printf_one(np, "%pOFC", 335 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 336 } 337 338 struct node_hash { 339 struct hlist_node node; 340 struct device_node *np; 341 }; 342 343 static DEFINE_HASHTABLE(phandle_ht, 8); 344 static void __init of_unittest_check_phandles(void) 345 { 346 struct device_node *np; 347 struct node_hash *nh; 348 struct hlist_node *tmp; 349 int i, dup_count = 0, phandle_count = 0; 350 351 for_each_of_allnodes(np) { 352 if (!np->phandle) 353 continue; 354 355 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 356 if (nh->np->phandle == np->phandle) { 357 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 358 np->phandle, nh->np, np); 359 dup_count++; 360 break; 361 } 362 } 363 364 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 365 if (!nh) 366 return; 367 368 nh->np = np; 369 hash_add(phandle_ht, &nh->node, np->phandle); 370 phandle_count++; 371 } 372 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 373 dup_count, phandle_count); 374 375 /* Clean up */ 376 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 377 hash_del(&nh->node); 378 kfree(nh); 379 } 380 } 381 382 static void __init of_unittest_parse_phandle_with_args(void) 383 { 384 struct device_node *np; 385 struct of_phandle_args args; 386 int i, rc; 387 388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 389 if (!np) { 390 pr_err("missing testcase data\n"); 391 return; 392 } 393 394 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 395 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 396 397 for (i = 0; i < 8; i++) { 398 bool passed = true; 399 400 memset(&args, 0, sizeof(args)); 401 rc = of_parse_phandle_with_args(np, "phandle-list", 402 "#phandle-cells", i, &args); 403 404 /* Test the values from tests-phandle.dtsi */ 405 switch (i) { 406 case 0: 407 passed &= !rc; 408 passed &= (args.args_count == 1); 409 passed &= (args.args[0] == (i + 1)); 410 break; 411 case 1: 412 passed &= !rc; 413 passed &= (args.args_count == 2); 414 passed &= (args.args[0] == (i + 1)); 415 passed &= (args.args[1] == 0); 416 break; 417 case 2: 418 passed &= (rc == -ENOENT); 419 break; 420 case 3: 421 passed &= !rc; 422 passed &= (args.args_count == 3); 423 passed &= (args.args[0] == (i + 1)); 424 passed &= (args.args[1] == 4); 425 passed &= (args.args[2] == 3); 426 break; 427 case 4: 428 passed &= !rc; 429 passed &= (args.args_count == 2); 430 passed &= (args.args[0] == (i + 1)); 431 passed &= (args.args[1] == 100); 432 break; 433 case 5: 434 passed &= !rc; 435 passed &= (args.args_count == 0); 436 break; 437 case 6: 438 passed &= !rc; 439 passed &= (args.args_count == 1); 440 passed &= (args.args[0] == (i + 1)); 441 break; 442 case 7: 443 passed &= (rc == -ENOENT); 444 break; 445 default: 446 passed = false; 447 } 448 449 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 450 i, args.np, rc); 451 } 452 453 /* Check for missing list property */ 454 memset(&args, 0, sizeof(args)); 455 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 456 "#phandle-cells", 0, &args); 457 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 458 rc = of_count_phandle_with_args(np, "phandle-list-missing", 459 "#phandle-cells"); 460 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 461 462 /* Check for missing cells property */ 463 memset(&args, 0, sizeof(args)); 464 465 EXPECT_BEGIN(KERN_INFO, 466 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 467 468 rc = of_parse_phandle_with_args(np, "phandle-list", 469 "#phandle-cells-missing", 0, &args); 470 471 EXPECT_END(KERN_INFO, 472 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 473 474 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 475 476 EXPECT_BEGIN(KERN_INFO, 477 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 478 479 rc = of_count_phandle_with_args(np, "phandle-list", 480 "#phandle-cells-missing"); 481 482 EXPECT_END(KERN_INFO, 483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 484 485 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 486 487 /* Check for bad phandle in list */ 488 memset(&args, 0, sizeof(args)); 489 490 EXPECT_BEGIN(KERN_INFO, 491 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 492 493 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 494 "#phandle-cells", 0, &args); 495 496 EXPECT_END(KERN_INFO, 497 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 498 499 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 500 501 EXPECT_BEGIN(KERN_INFO, 502 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 503 504 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 505 "#phandle-cells"); 506 507 EXPECT_END(KERN_INFO, 508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 509 510 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 511 512 /* Check for incorrectly formed argument list */ 513 memset(&args, 0, sizeof(args)); 514 515 EXPECT_BEGIN(KERN_INFO, 516 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 517 518 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 519 "#phandle-cells", 1, &args); 520 521 EXPECT_END(KERN_INFO, 522 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 523 524 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 525 526 EXPECT_BEGIN(KERN_INFO, 527 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 528 529 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 530 "#phandle-cells"); 531 532 EXPECT_END(KERN_INFO, 533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 534 535 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 536 } 537 538 static void __init of_unittest_parse_phandle_with_args_map(void) 539 { 540 struct device_node *np, *p0, *p1, *p2, *p3; 541 struct of_phandle_args args; 542 int i, rc; 543 544 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 545 if (!np) { 546 pr_err("missing testcase data\n"); 547 return; 548 } 549 550 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 551 if (!p0) { 552 pr_err("missing testcase data\n"); 553 return; 554 } 555 556 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 557 if (!p1) { 558 pr_err("missing testcase data\n"); 559 return; 560 } 561 562 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 563 if (!p2) { 564 pr_err("missing testcase data\n"); 565 return; 566 } 567 568 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 569 if (!p3) { 570 pr_err("missing testcase data\n"); 571 return; 572 } 573 574 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 575 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 576 577 for (i = 0; i < 8; i++) { 578 bool passed = true; 579 580 memset(&args, 0, sizeof(args)); 581 rc = of_parse_phandle_with_args_map(np, "phandle-list", 582 "phandle", i, &args); 583 584 /* Test the values from tests-phandle.dtsi */ 585 switch (i) { 586 case 0: 587 passed &= !rc; 588 passed &= (args.np == p1); 589 passed &= (args.args_count == 1); 590 passed &= (args.args[0] == 1); 591 break; 592 case 1: 593 passed &= !rc; 594 passed &= (args.np == p3); 595 passed &= (args.args_count == 3); 596 passed &= (args.args[0] == 2); 597 passed &= (args.args[1] == 5); 598 passed &= (args.args[2] == 3); 599 break; 600 case 2: 601 passed &= (rc == -ENOENT); 602 break; 603 case 3: 604 passed &= !rc; 605 passed &= (args.np == p0); 606 passed &= (args.args_count == 0); 607 break; 608 case 4: 609 passed &= !rc; 610 passed &= (args.np == p1); 611 passed &= (args.args_count == 1); 612 passed &= (args.args[0] == 3); 613 break; 614 case 5: 615 passed &= !rc; 616 passed &= (args.np == p0); 617 passed &= (args.args_count == 0); 618 break; 619 case 6: 620 passed &= !rc; 621 passed &= (args.np == p2); 622 passed &= (args.args_count == 2); 623 passed &= (args.args[0] == 15); 624 passed &= (args.args[1] == 0x20); 625 break; 626 case 7: 627 passed &= (rc == -ENOENT); 628 break; 629 default: 630 passed = false; 631 } 632 633 unittest(passed, "index %i - data error on node %s rc=%i\n", 634 i, args.np->full_name, rc); 635 } 636 637 /* Check for missing list property */ 638 memset(&args, 0, sizeof(args)); 639 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 640 "phandle", 0, &args); 641 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 642 643 /* Check for missing cells,map,mask property */ 644 memset(&args, 0, sizeof(args)); 645 646 EXPECT_BEGIN(KERN_INFO, 647 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 648 649 rc = of_parse_phandle_with_args_map(np, "phandle-list", 650 "phandle-missing", 0, &args); 651 EXPECT_END(KERN_INFO, 652 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 653 654 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 655 656 /* Check for bad phandle in list */ 657 memset(&args, 0, sizeof(args)); 658 659 EXPECT_BEGIN(KERN_INFO, 660 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 661 662 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 663 "phandle", 0, &args); 664 EXPECT_END(KERN_INFO, 665 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 666 667 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 668 669 /* Check for incorrectly formed argument list */ 670 memset(&args, 0, sizeof(args)); 671 672 EXPECT_BEGIN(KERN_INFO, 673 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 674 675 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 676 "phandle", 1, &args); 677 EXPECT_END(KERN_INFO, 678 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 679 680 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 681 } 682 683 static void __init of_unittest_property_string(void) 684 { 685 const char *strings[4]; 686 struct device_node *np; 687 int rc; 688 689 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 690 if (!np) { 691 pr_err("No testcase data in device tree\n"); 692 return; 693 } 694 695 rc = of_property_match_string(np, "phandle-list-names", "first"); 696 unittest(rc == 0, "first expected:0 got:%i\n", rc); 697 rc = of_property_match_string(np, "phandle-list-names", "second"); 698 unittest(rc == 1, "second expected:1 got:%i\n", rc); 699 rc = of_property_match_string(np, "phandle-list-names", "third"); 700 unittest(rc == 2, "third expected:2 got:%i\n", rc); 701 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 702 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 703 rc = of_property_match_string(np, "missing-property", "blah"); 704 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 705 rc = of_property_match_string(np, "empty-property", "blah"); 706 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 707 rc = of_property_match_string(np, "unterminated-string", "blah"); 708 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 709 710 /* of_property_count_strings() tests */ 711 rc = of_property_count_strings(np, "string-property"); 712 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 713 rc = of_property_count_strings(np, "phandle-list-names"); 714 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 715 rc = of_property_count_strings(np, "unterminated-string"); 716 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 717 rc = of_property_count_strings(np, "unterminated-string-list"); 718 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 719 720 /* of_property_read_string_index() tests */ 721 rc = of_property_read_string_index(np, "string-property", 0, strings); 722 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 723 strings[0] = NULL; 724 rc = of_property_read_string_index(np, "string-property", 1, strings); 725 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 726 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 727 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 728 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 729 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 730 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 731 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 732 strings[0] = NULL; 733 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 734 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 735 strings[0] = NULL; 736 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 737 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 738 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 739 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 740 strings[0] = NULL; 741 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 743 strings[1] = NULL; 744 745 /* of_property_read_string_array() tests */ 746 rc = of_property_read_string_array(np, "string-property", strings, 4); 747 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 748 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 749 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 750 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 751 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 752 /* -- An incorrectly formed string should cause a failure */ 753 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 754 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 755 /* -- parsing the correctly formed strings should still work: */ 756 strings[2] = NULL; 757 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 758 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 759 strings[1] = NULL; 760 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 761 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 762 } 763 764 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 765 (p1)->value && (p2)->value && \ 766 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 767 !strcmp((p1)->name, (p2)->name)) 768 static void __init of_unittest_property_copy(void) 769 { 770 #ifdef CONFIG_OF_DYNAMIC 771 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 772 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 773 struct property *new; 774 775 new = __of_prop_dup(&p1, GFP_KERNEL); 776 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 777 kfree(new->value); 778 kfree(new->name); 779 kfree(new); 780 781 new = __of_prop_dup(&p2, GFP_KERNEL); 782 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 783 kfree(new->value); 784 kfree(new->name); 785 kfree(new); 786 #endif 787 } 788 789 static void __init of_unittest_changeset(void) 790 { 791 #ifdef CONFIG_OF_DYNAMIC 792 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 793 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 794 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 795 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 796 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 797 struct property *ppremove; 798 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np; 799 struct of_changeset chgset; 800 801 n1 = __of_node_dup(NULL, "n1"); 802 unittest(n1, "testcase setup failure\n"); 803 804 n2 = __of_node_dup(NULL, "n2"); 805 unittest(n2, "testcase setup failure\n"); 806 807 n21 = __of_node_dup(NULL, "n21"); 808 unittest(n21, "testcase setup failure %p\n", n21); 809 810 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 811 nremove = of_get_child_by_name(nchangeset, "node-remove"); 812 unittest(nremove, "testcase setup failure\n"); 813 814 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 815 unittest(ppadd, "testcase setup failure\n"); 816 817 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 818 unittest(ppname_n1, "testcase setup failure\n"); 819 820 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 821 unittest(ppname_n2, "testcase setup failure\n"); 822 823 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 824 unittest(ppname_n21, "testcase setup failure\n"); 825 826 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 827 unittest(ppupdate, "testcase setup failure\n"); 828 829 parent = nchangeset; 830 n1->parent = parent; 831 n2->parent = parent; 832 n21->parent = n2; 833 834 ppremove = of_find_property(parent, "prop-remove", NULL); 835 unittest(ppremove, "failed to find removal prop"); 836 837 of_changeset_init(&chgset); 838 839 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 840 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 841 842 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 843 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 844 845 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 846 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 847 848 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 849 850 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 851 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 852 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 853 854 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 855 856 of_node_put(nchangeset); 857 858 /* Make sure node names are constructed correctly */ 859 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 860 "'%pOF' not added\n", n21); 861 of_node_put(np); 862 863 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 864 865 of_changeset_destroy(&chgset); 866 867 of_node_put(n1); 868 of_node_put(n2); 869 of_node_put(n21); 870 #endif 871 } 872 873 static void __init of_unittest_dma_get_max_cpu_address(void) 874 { 875 struct device_node *np; 876 phys_addr_t cpu_addr; 877 878 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 879 return; 880 881 np = of_find_node_by_path("/testcase-data/address-tests"); 882 if (!np) { 883 pr_err("missing testcase data\n"); 884 return; 885 } 886 887 cpu_addr = of_dma_get_max_cpu_address(np); 888 unittest(cpu_addr == 0x4fffffff, 889 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n", 890 &cpu_addr, 0x4fffffff); 891 } 892 893 static void __init of_unittest_dma_ranges_one(const char *path, 894 u64 expect_dma_addr, u64 expect_paddr) 895 { 896 #ifdef CONFIG_HAS_DMA 897 struct device_node *np; 898 const struct bus_dma_region *map = NULL; 899 int rc; 900 901 np = of_find_node_by_path(path); 902 if (!np) { 903 pr_err("missing testcase data\n"); 904 return; 905 } 906 907 rc = of_dma_get_range(np, &map); 908 909 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 910 911 if (!rc) { 912 phys_addr_t paddr; 913 dma_addr_t dma_addr; 914 struct device dev_bogus; 915 916 dev_bogus.dma_range_map = map; 917 paddr = dma_to_phys(&dev_bogus, expect_dma_addr); 918 dma_addr = phys_to_dma(&dev_bogus, expect_paddr); 919 920 unittest(paddr == expect_paddr, 921 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 922 &paddr, expect_paddr, np); 923 unittest(dma_addr == expect_dma_addr, 924 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 925 &dma_addr, expect_dma_addr, np); 926 927 kfree(map); 928 } 929 of_node_put(np); 930 #endif 931 } 932 933 static void __init of_unittest_parse_dma_ranges(void) 934 { 935 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 936 0x0, 0x20000000); 937 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 938 0x100000000, 0x20000000); 939 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 940 0x80000000, 0x20000000); 941 } 942 943 static void __init of_unittest_pci_dma_ranges(void) 944 { 945 struct device_node *np; 946 struct of_pci_range range; 947 struct of_pci_range_parser parser; 948 int i = 0; 949 950 if (!IS_ENABLED(CONFIG_PCI)) 951 return; 952 953 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 954 if (!np) { 955 pr_err("missing testcase data\n"); 956 return; 957 } 958 959 if (of_pci_dma_range_parser_init(&parser, np)) { 960 pr_err("missing dma-ranges property\n"); 961 return; 962 } 963 964 /* 965 * Get the dma-ranges from the device tree 966 */ 967 for_each_of_pci_range(&parser, &range) { 968 if (!i) { 969 unittest(range.size == 0x10000000, 970 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 971 np, range.size); 972 unittest(range.cpu_addr == 0x20000000, 973 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 974 range.cpu_addr, np); 975 unittest(range.pci_addr == 0x80000000, 976 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 977 range.pci_addr, np); 978 } else { 979 unittest(range.size == 0x10000000, 980 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 981 np, range.size); 982 unittest(range.cpu_addr == 0x40000000, 983 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 984 range.cpu_addr, np); 985 unittest(range.pci_addr == 0xc0000000, 986 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 987 range.pci_addr, np); 988 } 989 i++; 990 } 991 992 of_node_put(np); 993 } 994 995 static void __init of_unittest_parse_interrupts(void) 996 { 997 struct device_node *np; 998 struct of_phandle_args args; 999 int i, rc; 1000 1001 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1002 return; 1003 1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 1005 if (!np) { 1006 pr_err("missing testcase data\n"); 1007 return; 1008 } 1009 1010 for (i = 0; i < 4; i++) { 1011 bool passed = true; 1012 1013 memset(&args, 0, sizeof(args)); 1014 rc = of_irq_parse_one(np, i, &args); 1015 1016 passed &= !rc; 1017 passed &= (args.args_count == 1); 1018 passed &= (args.args[0] == (i + 1)); 1019 1020 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1021 i, args.np, rc); 1022 } 1023 of_node_put(np); 1024 1025 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 1026 if (!np) { 1027 pr_err("missing testcase data\n"); 1028 return; 1029 } 1030 1031 for (i = 0; i < 4; i++) { 1032 bool passed = true; 1033 1034 memset(&args, 0, sizeof(args)); 1035 rc = of_irq_parse_one(np, i, &args); 1036 1037 /* Test the values from tests-phandle.dtsi */ 1038 switch (i) { 1039 case 0: 1040 passed &= !rc; 1041 passed &= (args.args_count == 1); 1042 passed &= (args.args[0] == 9); 1043 break; 1044 case 1: 1045 passed &= !rc; 1046 passed &= (args.args_count == 3); 1047 passed &= (args.args[0] == 10); 1048 passed &= (args.args[1] == 11); 1049 passed &= (args.args[2] == 12); 1050 break; 1051 case 2: 1052 passed &= !rc; 1053 passed &= (args.args_count == 2); 1054 passed &= (args.args[0] == 13); 1055 passed &= (args.args[1] == 14); 1056 break; 1057 case 3: 1058 passed &= !rc; 1059 passed &= (args.args_count == 2); 1060 passed &= (args.args[0] == 15); 1061 passed &= (args.args[1] == 16); 1062 break; 1063 default: 1064 passed = false; 1065 } 1066 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1067 i, args.np, rc); 1068 } 1069 of_node_put(np); 1070 } 1071 1072 static void __init of_unittest_parse_interrupts_extended(void) 1073 { 1074 struct device_node *np; 1075 struct of_phandle_args args; 1076 int i, rc; 1077 1078 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1079 return; 1080 1081 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1082 if (!np) { 1083 pr_err("missing testcase data\n"); 1084 return; 1085 } 1086 1087 for (i = 0; i < 7; i++) { 1088 bool passed = true; 1089 1090 memset(&args, 0, sizeof(args)); 1091 rc = of_irq_parse_one(np, i, &args); 1092 1093 /* Test the values from tests-phandle.dtsi */ 1094 switch (i) { 1095 case 0: 1096 passed &= !rc; 1097 passed &= (args.args_count == 1); 1098 passed &= (args.args[0] == 1); 1099 break; 1100 case 1: 1101 passed &= !rc; 1102 passed &= (args.args_count == 3); 1103 passed &= (args.args[0] == 2); 1104 passed &= (args.args[1] == 3); 1105 passed &= (args.args[2] == 4); 1106 break; 1107 case 2: 1108 passed &= !rc; 1109 passed &= (args.args_count == 2); 1110 passed &= (args.args[0] == 5); 1111 passed &= (args.args[1] == 6); 1112 break; 1113 case 3: 1114 passed &= !rc; 1115 passed &= (args.args_count == 1); 1116 passed &= (args.args[0] == 9); 1117 break; 1118 case 4: 1119 passed &= !rc; 1120 passed &= (args.args_count == 3); 1121 passed &= (args.args[0] == 10); 1122 passed &= (args.args[1] == 11); 1123 passed &= (args.args[2] == 12); 1124 break; 1125 case 5: 1126 passed &= !rc; 1127 passed &= (args.args_count == 2); 1128 passed &= (args.args[0] == 13); 1129 passed &= (args.args[1] == 14); 1130 break; 1131 case 6: 1132 /* 1133 * Tests child node that is missing property 1134 * #address-cells. See the comments in 1135 * drivers/of/unittest-data/tests-interrupts.dtsi 1136 * nodes intmap1 and interrupts-extended0 1137 */ 1138 passed &= !rc; 1139 passed &= (args.args_count == 1); 1140 passed &= (args.args[0] == 15); 1141 break; 1142 default: 1143 passed = false; 1144 } 1145 1146 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1147 i, args.np, rc); 1148 } 1149 of_node_put(np); 1150 } 1151 1152 static const struct of_device_id match_node_table[] = { 1153 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1154 { .data = "B", .type = "type1", }, /* followed by type alone */ 1155 1156 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1157 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1158 { .data = "Cc", .name = "name2", .type = "type2", }, 1159 1160 { .data = "E", .compatible = "compat3" }, 1161 { .data = "G", .compatible = "compat2", }, 1162 { .data = "H", .compatible = "compat2", .name = "name5", }, 1163 { .data = "I", .compatible = "compat2", .type = "type1", }, 1164 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1165 { .data = "K", .compatible = "compat2", .name = "name9", }, 1166 {} 1167 }; 1168 1169 static struct { 1170 const char *path; 1171 const char *data; 1172 } match_node_tests[] = { 1173 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1174 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1175 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1176 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1177 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1178 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1179 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1180 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1181 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1182 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1183 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1184 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1185 }; 1186 1187 static void __init of_unittest_match_node(void) 1188 { 1189 struct device_node *np; 1190 const struct of_device_id *match; 1191 int i; 1192 1193 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1194 np = of_find_node_by_path(match_node_tests[i].path); 1195 if (!np) { 1196 unittest(0, "missing testcase node %s\n", 1197 match_node_tests[i].path); 1198 continue; 1199 } 1200 1201 match = of_match_node(match_node_table, np); 1202 if (!match) { 1203 unittest(0, "%s didn't match anything\n", 1204 match_node_tests[i].path); 1205 continue; 1206 } 1207 1208 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1209 unittest(0, "%s got wrong match. expected %s, got %s\n", 1210 match_node_tests[i].path, match_node_tests[i].data, 1211 (const char *)match->data); 1212 continue; 1213 } 1214 unittest(1, "passed"); 1215 } 1216 } 1217 1218 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2); 1219 static const struct platform_device_info test_bus_info = { 1220 .name = "unittest-bus", 1221 }; 1222 static void __init of_unittest_platform_populate(void) 1223 { 1224 int irq, rc; 1225 struct device_node *np, *child, *grandchild; 1226 struct platform_device *pdev, *test_bus; 1227 const struct of_device_id match[] = { 1228 { .compatible = "test-device", }, 1229 {} 1230 }; 1231 1232 np = of_find_node_by_path("/testcase-data"); 1233 of_platform_default_populate(np, NULL, NULL); 1234 1235 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1236 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1237 pdev = of_find_device_by_node(np); 1238 unittest(pdev, "device 1 creation failed\n"); 1239 1240 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1241 irq = platform_get_irq(pdev, 0); 1242 unittest(irq == -EPROBE_DEFER, 1243 "device deferred probe failed - %d\n", irq); 1244 1245 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1246 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1247 pdev = of_find_device_by_node(np); 1248 unittest(pdev, "device 2 creation failed\n"); 1249 1250 EXPECT_BEGIN(KERN_INFO, 1251 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1252 1253 irq = platform_get_irq(pdev, 0); 1254 1255 EXPECT_END(KERN_INFO, 1256 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1257 1258 unittest(irq < 0 && irq != -EPROBE_DEFER, 1259 "device parsing error failed - %d\n", irq); 1260 } 1261 1262 np = of_find_node_by_path("/testcase-data/platform-tests"); 1263 unittest(np, "No testcase data in device tree\n"); 1264 if (!np) 1265 return; 1266 1267 test_bus = platform_device_register_full(&test_bus_info); 1268 rc = PTR_ERR_OR_ZERO(test_bus); 1269 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1270 if (rc) { 1271 of_node_put(np); 1272 return; 1273 } 1274 test_bus->dev.of_node = np; 1275 1276 /* 1277 * Add a dummy resource to the test bus node after it is 1278 * registered to catch problems with un-inserted resources. The 1279 * DT code doesn't insert the resources, and it has caused the 1280 * kernel to oops in the past. This makes sure the same bug 1281 * doesn't crop up again. 1282 */ 1283 platform_device_add_resources(test_bus, &test_bus_res, 1); 1284 1285 of_platform_populate(np, match, NULL, &test_bus->dev); 1286 for_each_child_of_node(np, child) { 1287 for_each_child_of_node(child, grandchild) { 1288 pdev = of_find_device_by_node(grandchild); 1289 unittest(pdev, 1290 "Could not create device for node '%pOFn'\n", 1291 grandchild); 1292 platform_device_put(pdev); 1293 } 1294 } 1295 1296 of_platform_depopulate(&test_bus->dev); 1297 for_each_child_of_node(np, child) { 1298 for_each_child_of_node(child, grandchild) 1299 unittest(!of_find_device_by_node(grandchild), 1300 "device didn't get destroyed '%pOFn'\n", 1301 grandchild); 1302 } 1303 1304 platform_device_unregister(test_bus); 1305 of_node_put(np); 1306 } 1307 1308 /** 1309 * update_node_properties - adds the properties 1310 * of np into dup node (present in live tree) and 1311 * updates parent of children of np to dup. 1312 * 1313 * @np: node whose properties are being added to the live tree 1314 * @dup: node present in live tree to be updated 1315 */ 1316 static void update_node_properties(struct device_node *np, 1317 struct device_node *dup) 1318 { 1319 struct property *prop; 1320 struct property *save_next; 1321 struct device_node *child; 1322 int ret; 1323 1324 for_each_child_of_node(np, child) 1325 child->parent = dup; 1326 1327 /* 1328 * "unittest internal error: unable to add testdata property" 1329 * 1330 * If this message reports a property in node '/__symbols__' then 1331 * the respective unittest overlay contains a label that has the 1332 * same name as a label in the live devicetree. The label will 1333 * be in the live devicetree only if the devicetree source was 1334 * compiled with the '-@' option. If you encounter this error, 1335 * please consider renaming __all__ of the labels in the unittest 1336 * overlay dts files with an odd prefix that is unlikely to be 1337 * used in a real devicetree. 1338 */ 1339 1340 /* 1341 * open code for_each_property_of_node() because of_add_property() 1342 * sets prop->next to NULL 1343 */ 1344 for (prop = np->properties; prop != NULL; prop = save_next) { 1345 save_next = prop->next; 1346 ret = of_add_property(dup, prop); 1347 if (ret) { 1348 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1349 continue; 1350 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1351 np, prop->name); 1352 } 1353 } 1354 } 1355 1356 /** 1357 * attach_node_and_children - attaches nodes 1358 * and its children to live tree. 1359 * CAUTION: misleading function name - if node @np already exists in 1360 * the live tree then children of @np are *not* attached to the live 1361 * tree. This works for the current test devicetree nodes because such 1362 * nodes do not have child nodes. 1363 * 1364 * @np: Node to attach to live tree 1365 */ 1366 static void attach_node_and_children(struct device_node *np) 1367 { 1368 struct device_node *next, *dup, *child; 1369 unsigned long flags; 1370 const char *full_name; 1371 1372 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1373 1374 if (!strcmp(full_name, "/__local_fixups__") || 1375 !strcmp(full_name, "/__fixups__")) { 1376 kfree(full_name); 1377 return; 1378 } 1379 1380 dup = of_find_node_by_path(full_name); 1381 kfree(full_name); 1382 if (dup) { 1383 update_node_properties(np, dup); 1384 return; 1385 } 1386 1387 child = np->child; 1388 np->child = NULL; 1389 1390 mutex_lock(&of_mutex); 1391 raw_spin_lock_irqsave(&devtree_lock, flags); 1392 np->sibling = np->parent->child; 1393 np->parent->child = np; 1394 of_node_clear_flag(np, OF_DETACHED); 1395 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1396 1397 __of_attach_node_sysfs(np); 1398 mutex_unlock(&of_mutex); 1399 1400 while (child) { 1401 next = child->sibling; 1402 attach_node_and_children(child); 1403 child = next; 1404 } 1405 } 1406 1407 /** 1408 * unittest_data_add - Reads, copies data from 1409 * linked tree and attaches it to the live tree 1410 */ 1411 static int __init unittest_data_add(void) 1412 { 1413 void *unittest_data; 1414 void *unittest_data_align; 1415 struct device_node *unittest_data_node = NULL, *np; 1416 /* 1417 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1418 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1419 */ 1420 extern uint8_t __dtb_testcases_begin[]; 1421 extern uint8_t __dtb_testcases_end[]; 1422 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1423 int rc; 1424 void *ret; 1425 1426 if (!size) { 1427 pr_warn("%s: testcases is empty\n", __func__); 1428 return -ENODATA; 1429 } 1430 1431 /* creating copy */ 1432 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL); 1433 if (!unittest_data) 1434 return -ENOMEM; 1435 1436 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE); 1437 memcpy(unittest_data_align, __dtb_testcases_begin, size); 1438 1439 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node); 1440 if (!ret) { 1441 pr_warn("%s: unflatten testcases tree failed\n", __func__); 1442 kfree(unittest_data); 1443 return -ENODATA; 1444 } 1445 if (!unittest_data_node) { 1446 pr_warn("%s: testcases tree is empty\n", __func__); 1447 kfree(unittest_data); 1448 return -ENODATA; 1449 } 1450 1451 /* 1452 * This lock normally encloses of_resolve_phandles() 1453 */ 1454 of_overlay_mutex_lock(); 1455 1456 rc = of_resolve_phandles(unittest_data_node); 1457 if (rc) { 1458 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1459 of_overlay_mutex_unlock(); 1460 return -EINVAL; 1461 } 1462 1463 if (!of_root) { 1464 of_root = unittest_data_node; 1465 for_each_of_allnodes(np) 1466 __of_attach_node_sysfs(np); 1467 of_aliases = of_find_node_by_path("/aliases"); 1468 of_chosen = of_find_node_by_path("/chosen"); 1469 of_overlay_mutex_unlock(); 1470 return 0; 1471 } 1472 1473 EXPECT_BEGIN(KERN_INFO, 1474 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1475 1476 /* attach the sub-tree to live tree */ 1477 np = unittest_data_node->child; 1478 while (np) { 1479 struct device_node *next = np->sibling; 1480 1481 np->parent = of_root; 1482 attach_node_and_children(np); 1483 np = next; 1484 } 1485 1486 EXPECT_END(KERN_INFO, 1487 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1488 1489 of_overlay_mutex_unlock(); 1490 1491 return 0; 1492 } 1493 1494 #ifdef CONFIG_OF_OVERLAY 1495 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1496 1497 static int unittest_probe(struct platform_device *pdev) 1498 { 1499 struct device *dev = &pdev->dev; 1500 struct device_node *np = dev->of_node; 1501 1502 if (np == NULL) { 1503 dev_err(dev, "No OF data for device\n"); 1504 return -EINVAL; 1505 1506 } 1507 1508 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1509 1510 of_platform_populate(np, NULL, NULL, &pdev->dev); 1511 1512 return 0; 1513 } 1514 1515 static int unittest_remove(struct platform_device *pdev) 1516 { 1517 struct device *dev = &pdev->dev; 1518 struct device_node *np = dev->of_node; 1519 1520 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1521 return 0; 1522 } 1523 1524 static const struct of_device_id unittest_match[] = { 1525 { .compatible = "unittest", }, 1526 {}, 1527 }; 1528 1529 static struct platform_driver unittest_driver = { 1530 .probe = unittest_probe, 1531 .remove = unittest_remove, 1532 .driver = { 1533 .name = "unittest", 1534 .of_match_table = of_match_ptr(unittest_match), 1535 }, 1536 }; 1537 1538 /* get the platform device instantiated at the path */ 1539 static struct platform_device *of_path_to_platform_device(const char *path) 1540 { 1541 struct device_node *np; 1542 struct platform_device *pdev; 1543 1544 np = of_find_node_by_path(path); 1545 if (np == NULL) 1546 return NULL; 1547 1548 pdev = of_find_device_by_node(np); 1549 of_node_put(np); 1550 1551 return pdev; 1552 } 1553 1554 /* find out if a platform device exists at that path */ 1555 static int of_path_platform_device_exists(const char *path) 1556 { 1557 struct platform_device *pdev; 1558 1559 pdev = of_path_to_platform_device(path); 1560 platform_device_put(pdev); 1561 return pdev != NULL; 1562 } 1563 1564 #ifdef CONFIG_OF_GPIO 1565 1566 struct unittest_gpio_dev { 1567 struct gpio_chip chip; 1568 }; 1569 1570 static int unittest_gpio_chip_request_count; 1571 static int unittest_gpio_probe_count; 1572 static int unittest_gpio_probe_pass_count; 1573 1574 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1575 { 1576 unittest_gpio_chip_request_count++; 1577 1578 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1579 unittest_gpio_chip_request_count); 1580 return 0; 1581 } 1582 1583 static int unittest_gpio_probe(struct platform_device *pdev) 1584 { 1585 struct unittest_gpio_dev *devptr; 1586 int ret; 1587 1588 unittest_gpio_probe_count++; 1589 1590 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1591 if (!devptr) 1592 return -ENOMEM; 1593 1594 platform_set_drvdata(pdev, devptr); 1595 1596 devptr->chip.of_node = pdev->dev.of_node; 1597 devptr->chip.label = "of-unittest-gpio"; 1598 devptr->chip.base = -1; /* dynamic allocation */ 1599 devptr->chip.ngpio = 5; 1600 devptr->chip.request = unittest_gpio_chip_request; 1601 1602 ret = gpiochip_add_data(&devptr->chip, NULL); 1603 1604 unittest(!ret, 1605 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1606 1607 if (!ret) 1608 unittest_gpio_probe_pass_count++; 1609 return ret; 1610 } 1611 1612 static int unittest_gpio_remove(struct platform_device *pdev) 1613 { 1614 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1615 struct device *dev = &pdev->dev; 1616 struct device_node *np = pdev->dev.of_node; 1617 1618 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1619 1620 if (!gdev) 1621 return -EINVAL; 1622 1623 if (gdev->chip.base != -1) 1624 gpiochip_remove(&gdev->chip); 1625 1626 platform_set_drvdata(pdev, NULL); 1627 kfree(gdev); 1628 1629 return 0; 1630 } 1631 1632 static const struct of_device_id unittest_gpio_id[] = { 1633 { .compatible = "unittest-gpio", }, 1634 {} 1635 }; 1636 1637 static struct platform_driver unittest_gpio_driver = { 1638 .probe = unittest_gpio_probe, 1639 .remove = unittest_gpio_remove, 1640 .driver = { 1641 .name = "unittest-gpio", 1642 .of_match_table = of_match_ptr(unittest_gpio_id), 1643 }, 1644 }; 1645 1646 static void __init of_unittest_overlay_gpio(void) 1647 { 1648 int chip_request_count; 1649 int probe_pass_count; 1650 int ret; 1651 1652 /* 1653 * tests: apply overlays before registering driver 1654 * Similar to installing a driver as a module, the 1655 * driver is registered after applying the overlays. 1656 * 1657 * The overlays are applied by overlay_data_apply() 1658 * instead of of_unittest_apply_overlay() so that they 1659 * will not be tracked. Thus they will not be removed 1660 * by of_unittest_destroy_tracked_overlays(). 1661 * 1662 * - apply overlay_gpio_01 1663 * - apply overlay_gpio_02a 1664 * - apply overlay_gpio_02b 1665 * - register driver 1666 * 1667 * register driver will result in 1668 * - probe and processing gpio hog for overlay_gpio_01 1669 * - probe for overlay_gpio_02a 1670 * - processing gpio for overlay_gpio_02b 1671 */ 1672 1673 probe_pass_count = unittest_gpio_probe_pass_count; 1674 chip_request_count = unittest_gpio_chip_request_count; 1675 1676 /* 1677 * overlay_gpio_01 contains gpio node and child gpio hog node 1678 * overlay_gpio_02a contains gpio node 1679 * overlay_gpio_02b contains child gpio hog node 1680 */ 1681 1682 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1683 "Adding overlay 'overlay_gpio_01' failed\n"); 1684 1685 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1686 "Adding overlay 'overlay_gpio_02a' failed\n"); 1687 1688 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1689 "Adding overlay 'overlay_gpio_02b' failed\n"); 1690 1691 /* 1692 * messages are the result of the probes, after the 1693 * driver is registered 1694 */ 1695 1696 EXPECT_BEGIN(KERN_INFO, 1697 "gpio-<<int>> (line-B-input): hogged as input\n"); 1698 1699 EXPECT_BEGIN(KERN_INFO, 1700 "gpio-<<int>> (line-A-input): hogged as input\n"); 1701 1702 ret = platform_driver_register(&unittest_gpio_driver); 1703 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1704 return; 1705 1706 EXPECT_END(KERN_INFO, 1707 "gpio-<<int>> (line-A-input): hogged as input\n"); 1708 EXPECT_END(KERN_INFO, 1709 "gpio-<<int>> (line-B-input): hogged as input\n"); 1710 1711 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1712 "unittest_gpio_probe() failed or not called\n"); 1713 1714 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1715 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1716 unittest_gpio_chip_request_count - chip_request_count); 1717 1718 /* 1719 * tests: apply overlays after registering driver 1720 * 1721 * Similar to a driver built-in to the kernel, the 1722 * driver is registered before applying the overlays. 1723 * 1724 * overlay_gpio_03 contains gpio node and child gpio hog node 1725 * 1726 * - apply overlay_gpio_03 1727 * 1728 * apply overlay will result in 1729 * - probe and processing gpio hog. 1730 */ 1731 1732 probe_pass_count = unittest_gpio_probe_pass_count; 1733 chip_request_count = unittest_gpio_chip_request_count; 1734 1735 EXPECT_BEGIN(KERN_INFO, 1736 "gpio-<<int>> (line-D-input): hogged as input\n"); 1737 1738 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1739 1740 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1741 "Adding overlay 'overlay_gpio_03' failed\n"); 1742 1743 EXPECT_END(KERN_INFO, 1744 "gpio-<<int>> (line-D-input): hogged as input\n"); 1745 1746 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1747 "unittest_gpio_probe() failed or not called\n"); 1748 1749 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1750 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1751 unittest_gpio_chip_request_count - chip_request_count); 1752 1753 /* 1754 * overlay_gpio_04a contains gpio node 1755 * 1756 * - apply overlay_gpio_04a 1757 * 1758 * apply the overlay will result in 1759 * - probe for overlay_gpio_04a 1760 */ 1761 1762 probe_pass_count = unittest_gpio_probe_pass_count; 1763 chip_request_count = unittest_gpio_chip_request_count; 1764 1765 /* overlay_gpio_04a contains gpio node */ 1766 1767 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1768 "Adding overlay 'overlay_gpio_04a' failed\n"); 1769 1770 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1771 "unittest_gpio_probe() failed or not called\n"); 1772 1773 /* 1774 * overlay_gpio_04b contains child gpio hog node 1775 * 1776 * - apply overlay_gpio_04b 1777 * 1778 * apply the overlay will result in 1779 * - processing gpio for overlay_gpio_04b 1780 */ 1781 1782 EXPECT_BEGIN(KERN_INFO, 1783 "gpio-<<int>> (line-C-input): hogged as input\n"); 1784 1785 /* overlay_gpio_04b contains child gpio hog node */ 1786 1787 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1788 "Adding overlay 'overlay_gpio_04b' failed\n"); 1789 1790 EXPECT_END(KERN_INFO, 1791 "gpio-<<int>> (line-C-input): hogged as input\n"); 1792 1793 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1794 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1795 unittest_gpio_chip_request_count - chip_request_count); 1796 } 1797 1798 #else 1799 1800 static void __init of_unittest_overlay_gpio(void) 1801 { 1802 /* skip tests */ 1803 } 1804 1805 #endif 1806 1807 #if IS_BUILTIN(CONFIG_I2C) 1808 1809 /* get the i2c client device instantiated at the path */ 1810 static struct i2c_client *of_path_to_i2c_client(const char *path) 1811 { 1812 struct device_node *np; 1813 struct i2c_client *client; 1814 1815 np = of_find_node_by_path(path); 1816 if (np == NULL) 1817 return NULL; 1818 1819 client = of_find_i2c_device_by_node(np); 1820 of_node_put(np); 1821 1822 return client; 1823 } 1824 1825 /* find out if a i2c client device exists at that path */ 1826 static int of_path_i2c_client_exists(const char *path) 1827 { 1828 struct i2c_client *client; 1829 1830 client = of_path_to_i2c_client(path); 1831 if (client) 1832 put_device(&client->dev); 1833 return client != NULL; 1834 } 1835 #else 1836 static int of_path_i2c_client_exists(const char *path) 1837 { 1838 return 0; 1839 } 1840 #endif 1841 1842 enum overlay_type { 1843 PDEV_OVERLAY, 1844 I2C_OVERLAY 1845 }; 1846 1847 static int of_path_device_type_exists(const char *path, 1848 enum overlay_type ovtype) 1849 { 1850 switch (ovtype) { 1851 case PDEV_OVERLAY: 1852 return of_path_platform_device_exists(path); 1853 case I2C_OVERLAY: 1854 return of_path_i2c_client_exists(path); 1855 } 1856 return 0; 1857 } 1858 1859 static const char *unittest_path(int nr, enum overlay_type ovtype) 1860 { 1861 const char *base; 1862 static char buf[256]; 1863 1864 switch (ovtype) { 1865 case PDEV_OVERLAY: 1866 base = "/testcase-data/overlay-node/test-bus"; 1867 break; 1868 case I2C_OVERLAY: 1869 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1870 break; 1871 default: 1872 buf[0] = '\0'; 1873 return buf; 1874 } 1875 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1876 buf[sizeof(buf) - 1] = '\0'; 1877 return buf; 1878 } 1879 1880 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1881 { 1882 const char *path; 1883 1884 path = unittest_path(unittest_nr, ovtype); 1885 1886 switch (ovtype) { 1887 case PDEV_OVERLAY: 1888 return of_path_platform_device_exists(path); 1889 case I2C_OVERLAY: 1890 return of_path_i2c_client_exists(path); 1891 } 1892 return 0; 1893 } 1894 1895 static const char *overlay_name_from_nr(int nr) 1896 { 1897 static char buf[256]; 1898 1899 snprintf(buf, sizeof(buf) - 1, 1900 "overlay_%d", nr); 1901 buf[sizeof(buf) - 1] = '\0'; 1902 1903 return buf; 1904 } 1905 1906 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1907 1908 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */ 1909 1910 #define MAX_UNITTEST_OVERLAYS 256 1911 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1912 static int overlay_first_id = -1; 1913 1914 static long of_unittest_overlay_tracked(int id) 1915 { 1916 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1917 return 0; 1918 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id); 1919 } 1920 1921 static void of_unittest_track_overlay(int id) 1922 { 1923 if (overlay_first_id < 0) 1924 overlay_first_id = id; 1925 id -= overlay_first_id; 1926 1927 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1928 return; 1929 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1930 } 1931 1932 static void of_unittest_untrack_overlay(int id) 1933 { 1934 if (overlay_first_id < 0) 1935 return; 1936 id -= overlay_first_id; 1937 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1938 return; 1939 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1940 } 1941 1942 static void of_unittest_destroy_tracked_overlays(void) 1943 { 1944 int id, ret, defers, ovcs_id; 1945 1946 if (overlay_first_id < 0) 1947 return; 1948 1949 /* try until no defers */ 1950 do { 1951 defers = 0; 1952 /* remove in reverse order */ 1953 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1954 if (!of_unittest_overlay_tracked(id)) 1955 continue; 1956 1957 ovcs_id = id + overlay_first_id; 1958 ret = of_overlay_remove(&ovcs_id); 1959 if (ret == -ENODEV) { 1960 pr_warn("%s: no overlay to destroy for #%d\n", 1961 __func__, id + overlay_first_id); 1962 continue; 1963 } 1964 if (ret != 0) { 1965 defers++; 1966 pr_warn("%s: overlay destroy failed for #%d\n", 1967 __func__, id + overlay_first_id); 1968 continue; 1969 } 1970 1971 of_unittest_untrack_overlay(id); 1972 } 1973 } while (defers > 0); 1974 } 1975 1976 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1977 { 1978 const char *overlay_name; 1979 1980 overlay_name = overlay_name_from_nr(overlay_nr); 1981 1982 if (!overlay_data_apply(overlay_name, overlay_id)) { 1983 unittest(0, "could not apply overlay \"%s\"\n", 1984 overlay_name); 1985 return -EFAULT; 1986 } 1987 of_unittest_track_overlay(*overlay_id); 1988 1989 return 0; 1990 } 1991 1992 /* apply an overlay while checking before and after states */ 1993 static int __init of_unittest_apply_overlay_check(int overlay_nr, 1994 int unittest_nr, int before, int after, 1995 enum overlay_type ovtype) 1996 { 1997 int ret, ovcs_id; 1998 1999 /* unittest device must not be in before state */ 2000 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2001 unittest(0, "%s with device @\"%s\" %s\n", 2002 overlay_name_from_nr(overlay_nr), 2003 unittest_path(unittest_nr, ovtype), 2004 !before ? "enabled" : "disabled"); 2005 return -EINVAL; 2006 } 2007 2008 ovcs_id = 0; 2009 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2010 if (ret != 0) { 2011 /* of_unittest_apply_overlay already called unittest() */ 2012 return ret; 2013 } 2014 2015 /* unittest device must be to set to after state */ 2016 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2017 unittest(0, "%s failed to create @\"%s\" %s\n", 2018 overlay_name_from_nr(overlay_nr), 2019 unittest_path(unittest_nr, ovtype), 2020 !after ? "enabled" : "disabled"); 2021 return -EINVAL; 2022 } 2023 2024 return 0; 2025 } 2026 2027 /* apply an overlay and then revert it while checking before, after states */ 2028 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2029 int unittest_nr, int before, int after, 2030 enum overlay_type ovtype) 2031 { 2032 int ret, ovcs_id, save_id; 2033 2034 /* unittest device must be in before state */ 2035 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2036 unittest(0, "%s with device @\"%s\" %s\n", 2037 overlay_name_from_nr(overlay_nr), 2038 unittest_path(unittest_nr, ovtype), 2039 !before ? "enabled" : "disabled"); 2040 return -EINVAL; 2041 } 2042 2043 /* apply the overlay */ 2044 ovcs_id = 0; 2045 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2046 if (ret != 0) { 2047 /* of_unittest_apply_overlay already called unittest() */ 2048 return ret; 2049 } 2050 2051 /* unittest device must be in after state */ 2052 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2053 unittest(0, "%s failed to create @\"%s\" %s\n", 2054 overlay_name_from_nr(overlay_nr), 2055 unittest_path(unittest_nr, ovtype), 2056 !after ? "enabled" : "disabled"); 2057 return -EINVAL; 2058 } 2059 2060 save_id = ovcs_id; 2061 ret = of_overlay_remove(&ovcs_id); 2062 if (ret != 0) { 2063 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2064 overlay_name_from_nr(overlay_nr), 2065 unittest_path(unittest_nr, ovtype)); 2066 return ret; 2067 } 2068 of_unittest_untrack_overlay(save_id); 2069 2070 /* unittest device must be again in before state */ 2071 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2072 unittest(0, "%s with device @\"%s\" %s\n", 2073 overlay_name_from_nr(overlay_nr), 2074 unittest_path(unittest_nr, ovtype), 2075 !before ? "enabled" : "disabled"); 2076 return -EINVAL; 2077 } 2078 2079 return 0; 2080 } 2081 2082 /* test activation of device */ 2083 static void __init of_unittest_overlay_0(void) 2084 { 2085 int ret; 2086 2087 EXPECT_BEGIN(KERN_INFO, 2088 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2089 2090 /* device should enable */ 2091 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2092 2093 EXPECT_END(KERN_INFO, 2094 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2095 2096 if (ret) 2097 return; 2098 2099 unittest(1, "overlay test %d passed\n", 0); 2100 } 2101 2102 /* test deactivation of device */ 2103 static void __init of_unittest_overlay_1(void) 2104 { 2105 int ret; 2106 2107 EXPECT_BEGIN(KERN_INFO, 2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2109 2110 /* device should disable */ 2111 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2112 2113 EXPECT_END(KERN_INFO, 2114 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2115 2116 if (ret) 2117 return; 2118 2119 unittest(1, "overlay test %d passed\n", 1); 2120 2121 } 2122 2123 /* test activation of device */ 2124 static void __init of_unittest_overlay_2(void) 2125 { 2126 int ret; 2127 2128 EXPECT_BEGIN(KERN_INFO, 2129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2130 2131 /* device should enable */ 2132 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2133 2134 EXPECT_END(KERN_INFO, 2135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2136 2137 if (ret) 2138 return; 2139 unittest(1, "overlay test %d passed\n", 2); 2140 } 2141 2142 /* test deactivation of device */ 2143 static void __init of_unittest_overlay_3(void) 2144 { 2145 int ret; 2146 2147 EXPECT_BEGIN(KERN_INFO, 2148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2149 2150 /* device should disable */ 2151 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2152 2153 EXPECT_END(KERN_INFO, 2154 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2155 2156 if (ret) 2157 return; 2158 2159 unittest(1, "overlay test %d passed\n", 3); 2160 } 2161 2162 /* test activation of a full device node */ 2163 static void __init of_unittest_overlay_4(void) 2164 { 2165 /* device should disable */ 2166 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2167 return; 2168 2169 unittest(1, "overlay test %d passed\n", 4); 2170 } 2171 2172 /* test overlay apply/revert sequence */ 2173 static void __init of_unittest_overlay_5(void) 2174 { 2175 int ret; 2176 2177 EXPECT_BEGIN(KERN_INFO, 2178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2179 2180 /* device should disable */ 2181 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2182 2183 EXPECT_END(KERN_INFO, 2184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2185 2186 if (ret) 2187 return; 2188 2189 unittest(1, "overlay test %d passed\n", 5); 2190 } 2191 2192 /* test overlay application in sequence */ 2193 static void __init of_unittest_overlay_6(void) 2194 { 2195 int i, ov_id[2], ovcs_id; 2196 int overlay_nr = 6, unittest_nr = 6; 2197 int before = 0, after = 1; 2198 const char *overlay_name; 2199 2200 int ret; 2201 2202 /* unittest device must be in before state */ 2203 for (i = 0; i < 2; i++) { 2204 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2205 != before) { 2206 unittest(0, "%s with device @\"%s\" %s\n", 2207 overlay_name_from_nr(overlay_nr + i), 2208 unittest_path(unittest_nr + i, 2209 PDEV_OVERLAY), 2210 !before ? "enabled" : "disabled"); 2211 return; 2212 } 2213 } 2214 2215 /* apply the overlays */ 2216 2217 EXPECT_BEGIN(KERN_INFO, 2218 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2219 2220 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2221 2222 ret = overlay_data_apply(overlay_name, &ovcs_id); 2223 2224 if (!ret) { 2225 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2226 return; 2227 } 2228 ov_id[0] = ovcs_id; 2229 of_unittest_track_overlay(ov_id[0]); 2230 2231 EXPECT_END(KERN_INFO, 2232 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2233 2234 EXPECT_BEGIN(KERN_INFO, 2235 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2236 2237 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2238 2239 ret = overlay_data_apply(overlay_name, &ovcs_id); 2240 2241 if (!ret) { 2242 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2243 return; 2244 } 2245 ov_id[1] = ovcs_id; 2246 of_unittest_track_overlay(ov_id[1]); 2247 2248 EXPECT_END(KERN_INFO, 2249 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2250 2251 2252 for (i = 0; i < 2; i++) { 2253 /* unittest device must be in after state */ 2254 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2255 != after) { 2256 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2257 overlay_name_from_nr(overlay_nr + i), 2258 unittest_path(unittest_nr + i, 2259 PDEV_OVERLAY), 2260 !after ? "enabled" : "disabled"); 2261 return; 2262 } 2263 } 2264 2265 for (i = 1; i >= 0; i--) { 2266 ovcs_id = ov_id[i]; 2267 if (of_overlay_remove(&ovcs_id)) { 2268 unittest(0, "%s failed destroy @\"%s\"\n", 2269 overlay_name_from_nr(overlay_nr + i), 2270 unittest_path(unittest_nr + i, 2271 PDEV_OVERLAY)); 2272 return; 2273 } 2274 of_unittest_untrack_overlay(ov_id[i]); 2275 } 2276 2277 for (i = 0; i < 2; i++) { 2278 /* unittest device must be again in before state */ 2279 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2280 != before) { 2281 unittest(0, "%s with device @\"%s\" %s\n", 2282 overlay_name_from_nr(overlay_nr + i), 2283 unittest_path(unittest_nr + i, 2284 PDEV_OVERLAY), 2285 !before ? "enabled" : "disabled"); 2286 return; 2287 } 2288 } 2289 2290 unittest(1, "overlay test %d passed\n", 6); 2291 2292 } 2293 2294 /* test overlay application in sequence */ 2295 static void __init of_unittest_overlay_8(void) 2296 { 2297 int i, ov_id[2], ovcs_id; 2298 int overlay_nr = 8, unittest_nr = 8; 2299 const char *overlay_name; 2300 int ret; 2301 2302 /* we don't care about device state in this test */ 2303 2304 EXPECT_BEGIN(KERN_INFO, 2305 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2306 2307 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2308 2309 ret = overlay_data_apply(overlay_name, &ovcs_id); 2310 if (!ret) 2311 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2312 2313 EXPECT_END(KERN_INFO, 2314 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2315 2316 if (!ret) 2317 return; 2318 2319 ov_id[0] = ovcs_id; 2320 of_unittest_track_overlay(ov_id[0]); 2321 2322 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2323 2324 EXPECT_BEGIN(KERN_INFO, 2325 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2326 2327 /* apply the overlays */ 2328 ret = overlay_data_apply(overlay_name, &ovcs_id); 2329 2330 EXPECT_END(KERN_INFO, 2331 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2332 2333 if (!ret) { 2334 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2335 return; 2336 } 2337 2338 ov_id[1] = ovcs_id; 2339 of_unittest_track_overlay(ov_id[1]); 2340 2341 /* now try to remove first overlay (it should fail) */ 2342 ovcs_id = ov_id[0]; 2343 2344 EXPECT_BEGIN(KERN_INFO, 2345 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2346 2347 EXPECT_BEGIN(KERN_INFO, 2348 "OF: overlay: overlay #6 is not topmost"); 2349 2350 ret = of_overlay_remove(&ovcs_id); 2351 2352 EXPECT_END(KERN_INFO, 2353 "OF: overlay: overlay #6 is not topmost"); 2354 2355 EXPECT_END(KERN_INFO, 2356 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2357 2358 if (!ret) { 2359 unittest(0, "%s was destroyed @\"%s\"\n", 2360 overlay_name_from_nr(overlay_nr + 0), 2361 unittest_path(unittest_nr, 2362 PDEV_OVERLAY)); 2363 return; 2364 } 2365 2366 /* removing them in order should work */ 2367 for (i = 1; i >= 0; i--) { 2368 ovcs_id = ov_id[i]; 2369 if (of_overlay_remove(&ovcs_id)) { 2370 unittest(0, "%s not destroyed @\"%s\"\n", 2371 overlay_name_from_nr(overlay_nr + i), 2372 unittest_path(unittest_nr, 2373 PDEV_OVERLAY)); 2374 return; 2375 } 2376 of_unittest_untrack_overlay(ov_id[i]); 2377 } 2378 2379 unittest(1, "overlay test %d passed\n", 8); 2380 } 2381 2382 /* test insertion of a bus with parent devices */ 2383 static void __init of_unittest_overlay_10(void) 2384 { 2385 int ret; 2386 char *child_path; 2387 2388 /* device should disable */ 2389 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2390 2391 if (unittest(ret == 0, 2392 "overlay test %d failed; overlay application\n", 10)) 2393 return; 2394 2395 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2396 unittest_path(10, PDEV_OVERLAY)); 2397 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2398 return; 2399 2400 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2401 kfree(child_path); 2402 2403 unittest(ret, "overlay test %d failed; no child device\n", 10); 2404 } 2405 2406 /* test insertion of a bus with parent devices (and revert) */ 2407 static void __init of_unittest_overlay_11(void) 2408 { 2409 int ret; 2410 2411 /* device should disable */ 2412 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2413 PDEV_OVERLAY); 2414 2415 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2416 } 2417 2418 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2419 2420 struct unittest_i2c_bus_data { 2421 struct platform_device *pdev; 2422 struct i2c_adapter adap; 2423 }; 2424 2425 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2426 struct i2c_msg *msgs, int num) 2427 { 2428 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2429 2430 (void)std; 2431 2432 return num; 2433 } 2434 2435 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2436 { 2437 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2438 } 2439 2440 static const struct i2c_algorithm unittest_i2c_algo = { 2441 .master_xfer = unittest_i2c_master_xfer, 2442 .functionality = unittest_i2c_functionality, 2443 }; 2444 2445 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2446 { 2447 struct device *dev = &pdev->dev; 2448 struct device_node *np = dev->of_node; 2449 struct unittest_i2c_bus_data *std; 2450 struct i2c_adapter *adap; 2451 int ret; 2452 2453 if (np == NULL) { 2454 dev_err(dev, "No OF data for device\n"); 2455 return -EINVAL; 2456 2457 } 2458 2459 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2460 2461 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2462 if (!std) 2463 return -ENOMEM; 2464 2465 /* link them together */ 2466 std->pdev = pdev; 2467 platform_set_drvdata(pdev, std); 2468 2469 adap = &std->adap; 2470 i2c_set_adapdata(adap, std); 2471 adap->nr = -1; 2472 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2473 adap->class = I2C_CLASS_DEPRECATED; 2474 adap->algo = &unittest_i2c_algo; 2475 adap->dev.parent = dev; 2476 adap->dev.of_node = dev->of_node; 2477 adap->timeout = 5 * HZ; 2478 adap->retries = 3; 2479 2480 ret = i2c_add_numbered_adapter(adap); 2481 if (ret != 0) { 2482 dev_err(dev, "Failed to add I2C adapter\n"); 2483 return ret; 2484 } 2485 2486 return 0; 2487 } 2488 2489 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2490 { 2491 struct device *dev = &pdev->dev; 2492 struct device_node *np = dev->of_node; 2493 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2494 2495 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2496 i2c_del_adapter(&std->adap); 2497 2498 return 0; 2499 } 2500 2501 static const struct of_device_id unittest_i2c_bus_match[] = { 2502 { .compatible = "unittest-i2c-bus", }, 2503 {}, 2504 }; 2505 2506 static struct platform_driver unittest_i2c_bus_driver = { 2507 .probe = unittest_i2c_bus_probe, 2508 .remove = unittest_i2c_bus_remove, 2509 .driver = { 2510 .name = "unittest-i2c-bus", 2511 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2512 }, 2513 }; 2514 2515 static int unittest_i2c_dev_probe(struct i2c_client *client, 2516 const struct i2c_device_id *id) 2517 { 2518 struct device *dev = &client->dev; 2519 struct device_node *np = client->dev.of_node; 2520 2521 if (!np) { 2522 dev_err(dev, "No OF node\n"); 2523 return -EINVAL; 2524 } 2525 2526 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2527 2528 return 0; 2529 }; 2530 2531 static int unittest_i2c_dev_remove(struct i2c_client *client) 2532 { 2533 struct device *dev = &client->dev; 2534 struct device_node *np = client->dev.of_node; 2535 2536 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2537 return 0; 2538 } 2539 2540 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2541 { .name = "unittest-i2c-dev" }, 2542 { } 2543 }; 2544 2545 static struct i2c_driver unittest_i2c_dev_driver = { 2546 .driver = { 2547 .name = "unittest-i2c-dev", 2548 }, 2549 .probe = unittest_i2c_dev_probe, 2550 .remove = unittest_i2c_dev_remove, 2551 .id_table = unittest_i2c_dev_id, 2552 }; 2553 2554 #if IS_BUILTIN(CONFIG_I2C_MUX) 2555 2556 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2557 { 2558 return 0; 2559 } 2560 2561 static int unittest_i2c_mux_probe(struct i2c_client *client, 2562 const struct i2c_device_id *id) 2563 { 2564 int i, nchans; 2565 struct device *dev = &client->dev; 2566 struct i2c_adapter *adap = client->adapter; 2567 struct device_node *np = client->dev.of_node, *child; 2568 struct i2c_mux_core *muxc; 2569 u32 reg, max_reg; 2570 2571 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2572 2573 if (!np) { 2574 dev_err(dev, "No OF node\n"); 2575 return -EINVAL; 2576 } 2577 2578 max_reg = (u32)-1; 2579 for_each_child_of_node(np, child) { 2580 if (of_property_read_u32(child, "reg", ®)) 2581 continue; 2582 if (max_reg == (u32)-1 || reg > max_reg) 2583 max_reg = reg; 2584 } 2585 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2586 if (nchans == 0) { 2587 dev_err(dev, "No channels\n"); 2588 return -EINVAL; 2589 } 2590 2591 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2592 unittest_i2c_mux_select_chan, NULL); 2593 if (!muxc) 2594 return -ENOMEM; 2595 for (i = 0; i < nchans; i++) { 2596 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2597 dev_err(dev, "Failed to register mux #%d\n", i); 2598 i2c_mux_del_adapters(muxc); 2599 return -ENODEV; 2600 } 2601 } 2602 2603 i2c_set_clientdata(client, muxc); 2604 2605 return 0; 2606 }; 2607 2608 static int unittest_i2c_mux_remove(struct i2c_client *client) 2609 { 2610 struct device *dev = &client->dev; 2611 struct device_node *np = client->dev.of_node; 2612 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2613 2614 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2615 i2c_mux_del_adapters(muxc); 2616 return 0; 2617 } 2618 2619 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2620 { .name = "unittest-i2c-mux" }, 2621 { } 2622 }; 2623 2624 static struct i2c_driver unittest_i2c_mux_driver = { 2625 .driver = { 2626 .name = "unittest-i2c-mux", 2627 }, 2628 .probe = unittest_i2c_mux_probe, 2629 .remove = unittest_i2c_mux_remove, 2630 .id_table = unittest_i2c_mux_id, 2631 }; 2632 2633 #endif 2634 2635 static int of_unittest_overlay_i2c_init(void) 2636 { 2637 int ret; 2638 2639 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2640 if (unittest(ret == 0, 2641 "could not register unittest i2c device driver\n")) 2642 return ret; 2643 2644 ret = platform_driver_register(&unittest_i2c_bus_driver); 2645 2646 if (unittest(ret == 0, 2647 "could not register unittest i2c bus driver\n")) 2648 return ret; 2649 2650 #if IS_BUILTIN(CONFIG_I2C_MUX) 2651 2652 EXPECT_BEGIN(KERN_INFO, 2653 "i2c i2c-1: Added multiplexed i2c bus 2"); 2654 2655 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2656 2657 EXPECT_END(KERN_INFO, 2658 "i2c i2c-1: Added multiplexed i2c bus 2"); 2659 2660 if (unittest(ret == 0, 2661 "could not register unittest i2c mux driver\n")) 2662 return ret; 2663 #endif 2664 2665 return 0; 2666 } 2667 2668 static void of_unittest_overlay_i2c_cleanup(void) 2669 { 2670 #if IS_BUILTIN(CONFIG_I2C_MUX) 2671 i2c_del_driver(&unittest_i2c_mux_driver); 2672 #endif 2673 platform_driver_unregister(&unittest_i2c_bus_driver); 2674 i2c_del_driver(&unittest_i2c_dev_driver); 2675 } 2676 2677 static void __init of_unittest_overlay_i2c_12(void) 2678 { 2679 int ret; 2680 2681 /* device should enable */ 2682 EXPECT_BEGIN(KERN_INFO, 2683 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2684 2685 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2686 2687 EXPECT_END(KERN_INFO, 2688 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2689 2690 if (ret) 2691 return; 2692 2693 unittest(1, "overlay test %d passed\n", 12); 2694 } 2695 2696 /* test deactivation of device */ 2697 static void __init of_unittest_overlay_i2c_13(void) 2698 { 2699 int ret; 2700 2701 EXPECT_BEGIN(KERN_INFO, 2702 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2703 2704 /* device should disable */ 2705 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2706 2707 EXPECT_END(KERN_INFO, 2708 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2709 2710 if (ret) 2711 return; 2712 2713 unittest(1, "overlay test %d passed\n", 13); 2714 } 2715 2716 /* just check for i2c mux existence */ 2717 static void of_unittest_overlay_i2c_14(void) 2718 { 2719 } 2720 2721 static void __init of_unittest_overlay_i2c_15(void) 2722 { 2723 int ret; 2724 2725 /* device should enable */ 2726 EXPECT_BEGIN(KERN_INFO, 2727 "i2c i2c-1: Added multiplexed i2c bus 3"); 2728 2729 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2730 2731 EXPECT_END(KERN_INFO, 2732 "i2c i2c-1: Added multiplexed i2c bus 3"); 2733 2734 if (ret) 2735 return; 2736 2737 unittest(1, "overlay test %d passed\n", 15); 2738 } 2739 2740 #else 2741 2742 static inline void of_unittest_overlay_i2c_14(void) { } 2743 static inline void of_unittest_overlay_i2c_15(void) { } 2744 2745 #endif 2746 2747 static void __init of_unittest_overlay(void) 2748 { 2749 struct device_node *bus_np = NULL; 2750 2751 if (platform_driver_register(&unittest_driver)) { 2752 unittest(0, "could not register unittest driver\n"); 2753 goto out; 2754 } 2755 2756 bus_np = of_find_node_by_path(bus_path); 2757 if (bus_np == NULL) { 2758 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2759 goto out; 2760 } 2761 2762 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2763 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2764 goto out; 2765 } 2766 2767 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2768 unittest(0, "could not find unittest0 @ \"%s\"\n", 2769 unittest_path(100, PDEV_OVERLAY)); 2770 goto out; 2771 } 2772 2773 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2774 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2775 unittest_path(101, PDEV_OVERLAY)); 2776 goto out; 2777 } 2778 2779 unittest(1, "basic infrastructure of overlays passed"); 2780 2781 /* tests in sequence */ 2782 of_unittest_overlay_0(); 2783 of_unittest_overlay_1(); 2784 of_unittest_overlay_2(); 2785 of_unittest_overlay_3(); 2786 of_unittest_overlay_4(); 2787 of_unittest_overlay_5(); 2788 of_unittest_overlay_6(); 2789 of_unittest_overlay_8(); 2790 2791 of_unittest_overlay_10(); 2792 of_unittest_overlay_11(); 2793 2794 #if IS_BUILTIN(CONFIG_I2C) 2795 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2796 goto out; 2797 2798 of_unittest_overlay_i2c_12(); 2799 of_unittest_overlay_i2c_13(); 2800 of_unittest_overlay_i2c_14(); 2801 of_unittest_overlay_i2c_15(); 2802 2803 of_unittest_overlay_i2c_cleanup(); 2804 #endif 2805 2806 of_unittest_overlay_gpio(); 2807 2808 of_unittest_destroy_tracked_overlays(); 2809 2810 out: 2811 of_node_put(bus_np); 2812 } 2813 2814 #else 2815 static inline void __init of_unittest_overlay(void) { } 2816 #endif 2817 2818 #ifdef CONFIG_OF_OVERLAY 2819 2820 /* 2821 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2822 * in scripts/Makefile.lib 2823 */ 2824 2825 #define OVERLAY_INFO_EXTERN(name) \ 2826 extern uint8_t __dtb_##name##_begin[]; \ 2827 extern uint8_t __dtb_##name##_end[] 2828 2829 #define OVERLAY_INFO(overlay_name, expected) \ 2830 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2831 .dtb_end = __dtb_##overlay_name##_end, \ 2832 .expected_result = expected, \ 2833 .name = #overlay_name, \ 2834 } 2835 2836 struct overlay_info { 2837 uint8_t *dtb_begin; 2838 uint8_t *dtb_end; 2839 int expected_result; 2840 int overlay_id; 2841 char *name; 2842 }; 2843 2844 OVERLAY_INFO_EXTERN(overlay_base); 2845 OVERLAY_INFO_EXTERN(overlay); 2846 OVERLAY_INFO_EXTERN(overlay_0); 2847 OVERLAY_INFO_EXTERN(overlay_1); 2848 OVERLAY_INFO_EXTERN(overlay_2); 2849 OVERLAY_INFO_EXTERN(overlay_3); 2850 OVERLAY_INFO_EXTERN(overlay_4); 2851 OVERLAY_INFO_EXTERN(overlay_5); 2852 OVERLAY_INFO_EXTERN(overlay_6); 2853 OVERLAY_INFO_EXTERN(overlay_7); 2854 OVERLAY_INFO_EXTERN(overlay_8); 2855 OVERLAY_INFO_EXTERN(overlay_9); 2856 OVERLAY_INFO_EXTERN(overlay_10); 2857 OVERLAY_INFO_EXTERN(overlay_11); 2858 OVERLAY_INFO_EXTERN(overlay_12); 2859 OVERLAY_INFO_EXTERN(overlay_13); 2860 OVERLAY_INFO_EXTERN(overlay_15); 2861 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2862 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2863 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2864 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2865 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2866 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2867 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2868 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2869 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2870 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2871 2872 /* entries found by name */ 2873 static struct overlay_info overlays[] = { 2874 OVERLAY_INFO(overlay_base, -9999), 2875 OVERLAY_INFO(overlay, 0), 2876 OVERLAY_INFO(overlay_0, 0), 2877 OVERLAY_INFO(overlay_1, 0), 2878 OVERLAY_INFO(overlay_2, 0), 2879 OVERLAY_INFO(overlay_3, 0), 2880 OVERLAY_INFO(overlay_4, 0), 2881 OVERLAY_INFO(overlay_5, 0), 2882 OVERLAY_INFO(overlay_6, 0), 2883 OVERLAY_INFO(overlay_7, 0), 2884 OVERLAY_INFO(overlay_8, 0), 2885 OVERLAY_INFO(overlay_9, 0), 2886 OVERLAY_INFO(overlay_10, 0), 2887 OVERLAY_INFO(overlay_11, 0), 2888 OVERLAY_INFO(overlay_12, 0), 2889 OVERLAY_INFO(overlay_13, 0), 2890 OVERLAY_INFO(overlay_15, 0), 2891 OVERLAY_INFO(overlay_gpio_01, 0), 2892 OVERLAY_INFO(overlay_gpio_02a, 0), 2893 OVERLAY_INFO(overlay_gpio_02b, 0), 2894 OVERLAY_INFO(overlay_gpio_03, 0), 2895 OVERLAY_INFO(overlay_gpio_04a, 0), 2896 OVERLAY_INFO(overlay_gpio_04b, 0), 2897 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2898 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2899 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2900 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2901 /* end marker */ 2902 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2903 }; 2904 2905 static struct device_node *overlay_base_root; 2906 2907 static void * __init dt_alloc_memory(u64 size, u64 align) 2908 { 2909 void *ptr = memblock_alloc(size, align); 2910 2911 if (!ptr) 2912 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2913 __func__, size, align); 2914 2915 return ptr; 2916 } 2917 2918 /* 2919 * Create base device tree for the overlay unittest. 2920 * 2921 * This is called from very early boot code. 2922 * 2923 * Do as much as possible the same way as done in __unflatten_device_tree 2924 * and other early boot steps for the normal FDT so that the overlay base 2925 * unflattened tree will have the same characteristics as the real tree 2926 * (such as having memory allocated by the early allocator). The goal 2927 * is to test "the real thing" as much as possible, and test "test setup 2928 * code" as little as possible. 2929 * 2930 * Have to stop before resolving phandles, because that uses kmalloc. 2931 */ 2932 void __init unittest_unflatten_overlay_base(void) 2933 { 2934 struct overlay_info *info; 2935 u32 data_size; 2936 void *new_fdt; 2937 u32 size; 2938 int found = 0; 2939 const char *overlay_name = "overlay_base"; 2940 2941 for (info = overlays; info && info->name; info++) { 2942 if (!strcmp(overlay_name, info->name)) { 2943 found = 1; 2944 break; 2945 } 2946 } 2947 if (!found) { 2948 pr_err("no overlay data for %s\n", overlay_name); 2949 return; 2950 } 2951 2952 info = &overlays[0]; 2953 2954 if (info->expected_result != -9999) { 2955 pr_err("No dtb 'overlay_base' to attach\n"); 2956 return; 2957 } 2958 2959 data_size = info->dtb_end - info->dtb_begin; 2960 if (!data_size) { 2961 pr_err("No dtb 'overlay_base' to attach\n"); 2962 return; 2963 } 2964 2965 size = fdt_totalsize(info->dtb_begin); 2966 if (size != data_size) { 2967 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2968 return; 2969 } 2970 2971 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2972 if (!new_fdt) { 2973 pr_err("alloc for dtb 'overlay_base' failed"); 2974 return; 2975 } 2976 2977 memcpy(new_fdt, info->dtb_begin, size); 2978 2979 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2980 dt_alloc_memory, true); 2981 } 2982 2983 /* 2984 * The purpose of of_unittest_overlay_data_add is to add an 2985 * overlay in the normal fashion. This is a test of the whole 2986 * picture, instead of testing individual elements. 2987 * 2988 * A secondary purpose is to be able to verify that the contents of 2989 * /proc/device-tree/ contains the updated structure and values from 2990 * the overlay. That must be verified separately in user space. 2991 * 2992 * Return 0 on unexpected error. 2993 */ 2994 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 2995 { 2996 struct overlay_info *info; 2997 int found = 0; 2998 int ret; 2999 u32 size; 3000 3001 for (info = overlays; info && info->name; info++) { 3002 if (!strcmp(overlay_name, info->name)) { 3003 found = 1; 3004 break; 3005 } 3006 } 3007 if (!found) { 3008 pr_err("no overlay data for %s\n", overlay_name); 3009 return 0; 3010 } 3011 3012 size = info->dtb_end - info->dtb_begin; 3013 if (!size) 3014 pr_err("no overlay data for %s\n", overlay_name); 3015 3016 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 3017 if (overlay_id) 3018 *overlay_id = info->overlay_id; 3019 if (ret < 0) 3020 goto out; 3021 3022 pr_debug("%s applied\n", overlay_name); 3023 3024 out: 3025 if (ret != info->expected_result) 3026 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3027 info->expected_result, ret, overlay_name); 3028 3029 return (ret == info->expected_result); 3030 } 3031 3032 /* 3033 * The purpose of of_unittest_overlay_high_level is to add an overlay 3034 * in the normal fashion. This is a test of the whole picture, 3035 * instead of individual elements. 3036 * 3037 * The first part of the function is _not_ normal overlay usage; it is 3038 * finishing splicing the base overlay device tree into the live tree. 3039 */ 3040 static __init void of_unittest_overlay_high_level(void) 3041 { 3042 struct device_node *last_sibling; 3043 struct device_node *np; 3044 struct device_node *of_symbols; 3045 struct device_node *overlay_base_symbols; 3046 struct device_node **pprev; 3047 struct property *prop; 3048 int ret; 3049 3050 if (!overlay_base_root) { 3051 unittest(0, "overlay_base_root not initialized\n"); 3052 return; 3053 } 3054 3055 /* 3056 * Could not fixup phandles in unittest_unflatten_overlay_base() 3057 * because kmalloc() was not yet available. 3058 */ 3059 of_overlay_mutex_lock(); 3060 of_resolve_phandles(overlay_base_root); 3061 of_overlay_mutex_unlock(); 3062 3063 3064 /* 3065 * do not allow overlay_base to duplicate any node already in 3066 * tree, this greatly simplifies the code 3067 */ 3068 3069 /* 3070 * remove overlay_base_root node "__local_fixups", after 3071 * being used by of_resolve_phandles() 3072 */ 3073 pprev = &overlay_base_root->child; 3074 for (np = overlay_base_root->child; np; np = np->sibling) { 3075 if (of_node_name_eq(np, "__local_fixups__")) { 3076 *pprev = np->sibling; 3077 break; 3078 } 3079 pprev = &np->sibling; 3080 } 3081 3082 /* remove overlay_base_root node "__symbols__" if in live tree */ 3083 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3084 if (of_symbols) { 3085 /* will have to graft properties from node into live tree */ 3086 pprev = &overlay_base_root->child; 3087 for (np = overlay_base_root->child; np; np = np->sibling) { 3088 if (of_node_name_eq(np, "__symbols__")) { 3089 overlay_base_symbols = np; 3090 *pprev = np->sibling; 3091 break; 3092 } 3093 pprev = &np->sibling; 3094 } 3095 } 3096 3097 for_each_child_of_node(overlay_base_root, np) { 3098 struct device_node *base_child; 3099 for_each_child_of_node(of_root, base_child) { 3100 if (!strcmp(np->full_name, base_child->full_name)) { 3101 unittest(0, "illegal node name in overlay_base %pOFn", 3102 np); 3103 of_node_put(np); 3104 of_node_put(base_child); 3105 return; 3106 } 3107 } 3108 } 3109 3110 /* 3111 * overlay 'overlay_base' is not allowed to have root 3112 * properties, so only need to splice nodes into main device tree. 3113 * 3114 * root node of *overlay_base_root will not be freed, it is lost 3115 * memory. 3116 */ 3117 3118 for (np = overlay_base_root->child; np; np = np->sibling) 3119 np->parent = of_root; 3120 3121 mutex_lock(&of_mutex); 3122 3123 for (last_sibling = np = of_root->child; np; np = np->sibling) 3124 last_sibling = np; 3125 3126 if (last_sibling) 3127 last_sibling->sibling = overlay_base_root->child; 3128 else 3129 of_root->child = overlay_base_root->child; 3130 3131 for_each_of_allnodes_from(overlay_base_root, np) 3132 __of_attach_node_sysfs(np); 3133 3134 if (of_symbols) { 3135 struct property *new_prop; 3136 for_each_property_of_node(overlay_base_symbols, prop) { 3137 3138 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3139 if (!new_prop) { 3140 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3141 prop->name); 3142 goto err_unlock; 3143 } 3144 if (__of_add_property(of_symbols, new_prop)) { 3145 kfree(new_prop->name); 3146 kfree(new_prop->value); 3147 kfree(new_prop); 3148 /* "name" auto-generated by unflatten */ 3149 if (!strcmp(prop->name, "name")) 3150 continue; 3151 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3152 prop->name); 3153 goto err_unlock; 3154 } 3155 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3156 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3157 prop->name); 3158 goto err_unlock; 3159 } 3160 } 3161 } 3162 3163 mutex_unlock(&of_mutex); 3164 3165 3166 /* now do the normal overlay usage test */ 3167 3168 EXPECT_BEGIN(KERN_ERR, 3169 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3170 EXPECT_BEGIN(KERN_ERR, 3171 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3172 EXPECT_BEGIN(KERN_ERR, 3173 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3174 EXPECT_BEGIN(KERN_ERR, 3175 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3176 EXPECT_BEGIN(KERN_ERR, 3177 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3178 EXPECT_BEGIN(KERN_ERR, 3179 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3180 EXPECT_BEGIN(KERN_ERR, 3181 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3182 EXPECT_BEGIN(KERN_ERR, 3183 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3184 EXPECT_BEGIN(KERN_ERR, 3185 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3186 EXPECT_BEGIN(KERN_ERR, 3187 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3188 EXPECT_BEGIN(KERN_ERR, 3189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3190 3191 ret = overlay_data_apply("overlay", NULL); 3192 3193 EXPECT_END(KERN_ERR, 3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3195 EXPECT_END(KERN_ERR, 3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3197 EXPECT_END(KERN_ERR, 3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3199 EXPECT_END(KERN_ERR, 3200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3201 EXPECT_END(KERN_ERR, 3202 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3203 EXPECT_END(KERN_ERR, 3204 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3205 EXPECT_END(KERN_ERR, 3206 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3207 EXPECT_END(KERN_ERR, 3208 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3209 EXPECT_END(KERN_ERR, 3210 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3211 EXPECT_END(KERN_ERR, 3212 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3213 EXPECT_END(KERN_ERR, 3214 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3215 3216 unittest(ret, "Adding overlay 'overlay' failed\n"); 3217 3218 EXPECT_BEGIN(KERN_ERR, 3219 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3220 EXPECT_BEGIN(KERN_ERR, 3221 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3222 3223 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3224 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3225 3226 EXPECT_END(KERN_ERR, 3227 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3228 EXPECT_END(KERN_ERR, 3229 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3230 3231 EXPECT_BEGIN(KERN_ERR, 3232 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3233 EXPECT_BEGIN(KERN_ERR, 3234 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3235 EXPECT_BEGIN(KERN_ERR, 3236 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3237 3238 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3239 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3240 3241 EXPECT_END(KERN_ERR, 3242 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3243 EXPECT_END(KERN_ERR, 3244 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3245 EXPECT_END(KERN_ERR, 3246 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3247 3248 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3249 "Adding overlay 'overlay_bad_phandle' failed\n"); 3250 3251 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3252 "Adding overlay 'overlay_bad_symbol' failed\n"); 3253 3254 return; 3255 3256 err_unlock: 3257 mutex_unlock(&of_mutex); 3258 } 3259 3260 #else 3261 3262 static inline __init void of_unittest_overlay_high_level(void) {} 3263 3264 #endif 3265 3266 static int __init of_unittest(void) 3267 { 3268 struct device_node *np; 3269 int res; 3270 3271 pr_info("start of unittest - you will see error messages\n"); 3272 3273 /* adding data for unittest */ 3274 3275 if (IS_ENABLED(CONFIG_UML)) 3276 unittest_unflatten_overlay_base(); 3277 3278 res = unittest_data_add(); 3279 if (res) 3280 return res; 3281 if (!of_aliases) 3282 of_aliases = of_find_node_by_path("/aliases"); 3283 3284 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3285 if (!np) { 3286 pr_info("No testcase data in device tree; not running tests\n"); 3287 return 0; 3288 } 3289 of_node_put(np); 3290 3291 of_unittest_check_tree_linkage(); 3292 of_unittest_check_phandles(); 3293 of_unittest_find_node_by_name(); 3294 of_unittest_dynamic(); 3295 of_unittest_parse_phandle_with_args(); 3296 of_unittest_parse_phandle_with_args_map(); 3297 of_unittest_printf(); 3298 of_unittest_property_string(); 3299 of_unittest_property_copy(); 3300 of_unittest_changeset(); 3301 of_unittest_parse_interrupts(); 3302 of_unittest_parse_interrupts_extended(); 3303 of_unittest_dma_get_max_cpu_address(); 3304 of_unittest_parse_dma_ranges(); 3305 of_unittest_pci_dma_ranges(); 3306 of_unittest_match_node(); 3307 of_unittest_platform_populate(); 3308 of_unittest_overlay(); 3309 3310 /* Double check linkage after removing testcase data */ 3311 of_unittest_check_tree_linkage(); 3312 3313 of_unittest_overlay_high_level(); 3314 3315 pr_info("end of unittest - %i passed, %i failed\n", 3316 unittest_results.passed, unittest_results.failed); 3317 3318 return 0; 3319 } 3320 late_initcall(of_unittest); 3321