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