1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Self tests for device tree subsystem 4 */ 5 6 #define pr_fmt(fmt) "### dt-test ### " fmt 7 8 #include <linux/memblock.h> 9 #include <linux/clk.h> 10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */ 11 #include <linux/err.h> 12 #include <linux/errno.h> 13 #include <linux/hashtable.h> 14 #include <linux/libfdt.h> 15 #include <linux/of.h> 16 #include <linux/of_address.h> 17 #include <linux/of_fdt.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <linux/list.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 26 #include <linux/i2c.h> 27 #include <linux/i2c-mux.h> 28 #include <linux/gpio/driver.h> 29 30 #include <linux/bitops.h> 31 32 #include "of_private.h" 33 34 static struct unittest_results { 35 int passed; 36 int failed; 37 } unittest_results; 38 39 #define unittest(result, fmt, ...) ({ \ 40 bool failed = !(result); \ 41 if (failed) { \ 42 unittest_results.failed++; \ 43 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 44 } else { \ 45 unittest_results.passed++; \ 46 pr_debug("pass %s():%i\n", __func__, __LINE__); \ 47 } \ 48 failed; \ 49 }) 50 51 /* 52 * Expected message may have a message level other than KERN_INFO. 53 * Print the expected message only if the current loglevel will allow 54 * the actual message to print. 55 * 56 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by 57 * pr_debug(). 58 */ 59 #define EXPECT_BEGIN(level, fmt, ...) \ 60 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 61 62 #define EXPECT_END(level, fmt, ...) \ 63 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 64 65 static void __init of_unittest_find_node_by_name(void) 66 { 67 struct device_node *np; 68 const char *options, *name; 69 70 np = of_find_node_by_path("/testcase-data"); 71 name = kasprintf(GFP_KERNEL, "%pOF", np); 72 unittest(np && !strcmp("/testcase-data", name), 73 "find /testcase-data failed\n"); 74 of_node_put(np); 75 kfree(name); 76 77 /* Test if trailing '/' works */ 78 np = of_find_node_by_path("/testcase-data/"); 79 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 80 81 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 82 name = kasprintf(GFP_KERNEL, "%pOF", np); 83 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 84 "find /testcase-data/phandle-tests/consumer-a failed\n"); 85 of_node_put(np); 86 kfree(name); 87 88 np = of_find_node_by_path("testcase-alias"); 89 name = kasprintf(GFP_KERNEL, "%pOF", np); 90 unittest(np && !strcmp("/testcase-data", name), 91 "find testcase-alias failed\n"); 92 of_node_put(np); 93 kfree(name); 94 95 /* Test if trailing '/' works on aliases */ 96 np = of_find_node_by_path("testcase-alias/"); 97 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 98 99 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 100 name = kasprintf(GFP_KERNEL, "%pOF", np); 101 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 102 "find testcase-alias/phandle-tests/consumer-a failed\n"); 103 of_node_put(np); 104 kfree(name); 105 106 np = of_find_node_by_path("/testcase-data/missing-path"); 107 unittest(!np, "non-existent path returned node %pOF\n", np); 108 of_node_put(np); 109 110 np = of_find_node_by_path("missing-alias"); 111 unittest(!np, "non-existent alias returned node %pOF\n", np); 112 of_node_put(np); 113 114 np = of_find_node_by_path("testcase-alias/missing-path"); 115 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 116 of_node_put(np); 117 118 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 119 unittest(np && !strcmp("testoption", options), 120 "option path test failed\n"); 121 of_node_put(np); 122 123 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 124 unittest(np && !strcmp("test/option", options), 125 "option path test, subcase #1 failed\n"); 126 of_node_put(np); 127 128 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 129 unittest(np && !strcmp("test/option", options), 130 "option path test, subcase #2 failed\n"); 131 of_node_put(np); 132 133 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 134 unittest(np, "NULL option path test failed\n"); 135 of_node_put(np); 136 137 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 138 &options); 139 unittest(np && !strcmp("testaliasoption", options), 140 "option alias path test failed\n"); 141 of_node_put(np); 142 143 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 144 &options); 145 unittest(np && !strcmp("test/alias/option", options), 146 "option alias path test, subcase #1 failed\n"); 147 of_node_put(np); 148 149 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 150 unittest(np, "NULL option alias path test failed\n"); 151 of_node_put(np); 152 153 options = "testoption"; 154 np = of_find_node_opts_by_path("testcase-alias", &options); 155 unittest(np && !options, "option clearing test failed\n"); 156 of_node_put(np); 157 158 options = "testoption"; 159 np = of_find_node_opts_by_path("/", &options); 160 unittest(np && !options, "option clearing root node test failed\n"); 161 of_node_put(np); 162 } 163 164 static void __init of_unittest_dynamic(void) 165 { 166 struct device_node *np; 167 struct property *prop; 168 169 np = of_find_node_by_path("/testcase-data"); 170 if (!np) { 171 pr_err("missing testcase data\n"); 172 return; 173 } 174 175 /* Array of 4 properties for the purpose of testing */ 176 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 177 if (!prop) { 178 unittest(0, "kzalloc() failed\n"); 179 return; 180 } 181 182 /* Add a new property - should pass*/ 183 prop->name = "new-property"; 184 prop->value = "new-property-data"; 185 prop->length = strlen(prop->value) + 1; 186 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 187 188 /* Try to add an existing property - should fail */ 189 prop++; 190 prop->name = "new-property"; 191 prop->value = "new-property-data-should-fail"; 192 prop->length = strlen(prop->value) + 1; 193 unittest(of_add_property(np, prop) != 0, 194 "Adding an existing property should have failed\n"); 195 196 /* Try to modify an existing property - should pass */ 197 prop->value = "modify-property-data-should-pass"; 198 prop->length = strlen(prop->value) + 1; 199 unittest(of_update_property(np, prop) == 0, 200 "Updating an existing property should have passed\n"); 201 202 /* Try to modify non-existent property - should pass*/ 203 prop++; 204 prop->name = "modify-property"; 205 prop->value = "modify-missing-property-data-should-pass"; 206 prop->length = strlen(prop->value) + 1; 207 unittest(of_update_property(np, prop) == 0, 208 "Updating a missing property should have passed\n"); 209 210 /* Remove property - should pass */ 211 unittest(of_remove_property(np, prop) == 0, 212 "Removing a property should have passed\n"); 213 214 /* Adding very large property - should pass */ 215 prop++; 216 prop->name = "large-property-PAGE_SIZEx8"; 217 prop->length = PAGE_SIZE * 8; 218 prop->value = kzalloc(prop->length, GFP_KERNEL); 219 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 220 if (prop->value) 221 unittest(of_add_property(np, prop) == 0, 222 "Adding a large property should have passed\n"); 223 } 224 225 static int __init of_unittest_check_node_linkage(struct device_node *np) 226 { 227 struct device_node *child; 228 int count = 0, rc; 229 230 for_each_child_of_node(np, child) { 231 if (child->parent != np) { 232 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 233 child, np); 234 rc = -EINVAL; 235 goto put_child; 236 } 237 238 rc = of_unittest_check_node_linkage(child); 239 if (rc < 0) 240 goto put_child; 241 count += rc; 242 } 243 244 return count + 1; 245 put_child: 246 of_node_put(child); 247 return rc; 248 } 249 250 static void __init of_unittest_check_tree_linkage(void) 251 { 252 struct device_node *np; 253 int allnode_count = 0, child_count; 254 255 if (!of_root) 256 return; 257 258 for_each_of_allnodes(np) 259 allnode_count++; 260 child_count = of_unittest_check_node_linkage(of_root); 261 262 unittest(child_count > 0, "Device node data structure is corrupted\n"); 263 unittest(child_count == allnode_count, 264 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 265 allnode_count, child_count); 266 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 267 } 268 269 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 270 const char *expected) 271 { 272 unsigned char *buf; 273 int buf_size; 274 int size, i; 275 276 buf_size = strlen(expected) + 10; 277 buf = kmalloc(buf_size, GFP_KERNEL); 278 if (!buf) 279 return; 280 281 /* Baseline; check conversion with a large size limit */ 282 memset(buf, 0xff, buf_size); 283 size = snprintf(buf, buf_size - 2, fmt, np); 284 285 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 286 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 287 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 288 fmt, expected, buf); 289 290 /* Make sure length limits work */ 291 size++; 292 for (i = 0; i < 2; i++, size--) { 293 /* Clear the buffer, and make sure it works correctly still */ 294 memset(buf, 0xff, buf_size); 295 snprintf(buf, size+1, fmt, np); 296 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 297 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 298 size, fmt, expected, buf); 299 } 300 kfree(buf); 301 } 302 303 static void __init of_unittest_printf(void) 304 { 305 struct device_node *np; 306 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 307 char phandle_str[16] = ""; 308 309 np = of_find_node_by_path(full_name); 310 if (!np) { 311 unittest(np, "testcase data missing\n"); 312 return; 313 } 314 315 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 316 317 of_unittest_printf_one(np, "%pOF", full_name); 318 of_unittest_printf_one(np, "%pOFf", full_name); 319 of_unittest_printf_one(np, "%pOFn", "dev"); 320 of_unittest_printf_one(np, "%2pOFn", "dev"); 321 of_unittest_printf_one(np, "%5pOFn", " dev"); 322 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 323 of_unittest_printf_one(np, "%pOFp", phandle_str); 324 of_unittest_printf_one(np, "%pOFP", "dev@100"); 325 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 326 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 327 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 328 of_unittest_printf_one(of_root, "%pOFP", "/"); 329 of_unittest_printf_one(np, "%pOFF", "----"); 330 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 331 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 332 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 333 of_unittest_printf_one(np, "%pOFC", 334 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 335 } 336 337 struct node_hash { 338 struct hlist_node node; 339 struct device_node *np; 340 }; 341 342 static DEFINE_HASHTABLE(phandle_ht, 8); 343 static void __init of_unittest_check_phandles(void) 344 { 345 struct device_node *np; 346 struct node_hash *nh; 347 struct hlist_node *tmp; 348 int i, dup_count = 0, phandle_count = 0; 349 350 for_each_of_allnodes(np) { 351 if (!np->phandle) 352 continue; 353 354 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 355 if (nh->np->phandle == np->phandle) { 356 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 357 np->phandle, nh->np, np); 358 dup_count++; 359 break; 360 } 361 } 362 363 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 364 if (!nh) 365 return; 366 367 nh->np = np; 368 hash_add(phandle_ht, &nh->node, np->phandle); 369 phandle_count++; 370 } 371 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 372 dup_count, phandle_count); 373 374 /* Clean up */ 375 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 376 hash_del(&nh->node); 377 kfree(nh); 378 } 379 } 380 381 static void __init of_unittest_parse_phandle_with_args(void) 382 { 383 struct device_node *np; 384 struct of_phandle_args args; 385 int i, rc; 386 387 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 388 if (!np) { 389 pr_err("missing testcase data\n"); 390 return; 391 } 392 393 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 394 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 395 396 for (i = 0; i < 8; i++) { 397 bool passed = true; 398 399 memset(&args, 0, sizeof(args)); 400 rc = of_parse_phandle_with_args(np, "phandle-list", 401 "#phandle-cells", i, &args); 402 403 /* Test the values from tests-phandle.dtsi */ 404 switch (i) { 405 case 0: 406 passed &= !rc; 407 passed &= (args.args_count == 1); 408 passed &= (args.args[0] == (i + 1)); 409 break; 410 case 1: 411 passed &= !rc; 412 passed &= (args.args_count == 2); 413 passed &= (args.args[0] == (i + 1)); 414 passed &= (args.args[1] == 0); 415 break; 416 case 2: 417 passed &= (rc == -ENOENT); 418 break; 419 case 3: 420 passed &= !rc; 421 passed &= (args.args_count == 3); 422 passed &= (args.args[0] == (i + 1)); 423 passed &= (args.args[1] == 4); 424 passed &= (args.args[2] == 3); 425 break; 426 case 4: 427 passed &= !rc; 428 passed &= (args.args_count == 2); 429 passed &= (args.args[0] == (i + 1)); 430 passed &= (args.args[1] == 100); 431 break; 432 case 5: 433 passed &= !rc; 434 passed &= (args.args_count == 0); 435 break; 436 case 6: 437 passed &= !rc; 438 passed &= (args.args_count == 1); 439 passed &= (args.args[0] == (i + 1)); 440 break; 441 case 7: 442 passed &= (rc == -ENOENT); 443 break; 444 default: 445 passed = false; 446 } 447 448 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 449 i, args.np, rc); 450 } 451 452 /* Check for missing list property */ 453 memset(&args, 0, sizeof(args)); 454 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 455 "#phandle-cells", 0, &args); 456 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 457 rc = of_count_phandle_with_args(np, "phandle-list-missing", 458 "#phandle-cells"); 459 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 460 461 /* Check for missing cells property */ 462 memset(&args, 0, sizeof(args)); 463 464 EXPECT_BEGIN(KERN_INFO, 465 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 466 467 rc = of_parse_phandle_with_args(np, "phandle-list", 468 "#phandle-cells-missing", 0, &args); 469 470 EXPECT_END(KERN_INFO, 471 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 472 473 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 474 475 EXPECT_BEGIN(KERN_INFO, 476 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 477 478 rc = of_count_phandle_with_args(np, "phandle-list", 479 "#phandle-cells-missing"); 480 481 EXPECT_END(KERN_INFO, 482 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 483 484 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 485 486 /* Check for bad phandle in list */ 487 memset(&args, 0, sizeof(args)); 488 489 EXPECT_BEGIN(KERN_INFO, 490 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 491 492 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 493 "#phandle-cells", 0, &args); 494 495 EXPECT_END(KERN_INFO, 496 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 497 498 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 499 500 EXPECT_BEGIN(KERN_INFO, 501 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 502 503 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 504 "#phandle-cells"); 505 506 EXPECT_END(KERN_INFO, 507 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 508 509 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 510 511 /* Check for incorrectly formed argument list */ 512 memset(&args, 0, sizeof(args)); 513 514 EXPECT_BEGIN(KERN_INFO, 515 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 516 517 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 518 "#phandle-cells", 1, &args); 519 520 EXPECT_END(KERN_INFO, 521 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 522 523 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 524 525 EXPECT_BEGIN(KERN_INFO, 526 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 527 528 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 529 "#phandle-cells"); 530 531 EXPECT_END(KERN_INFO, 532 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 533 534 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 535 } 536 537 static void __init of_unittest_parse_phandle_with_args_map(void) 538 { 539 struct device_node *np, *p0, *p1, *p2, *p3; 540 struct of_phandle_args args; 541 int i, rc; 542 543 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 544 if (!np) { 545 pr_err("missing testcase data\n"); 546 return; 547 } 548 549 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 550 if (!p0) { 551 pr_err("missing testcase data\n"); 552 return; 553 } 554 555 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 556 if (!p1) { 557 pr_err("missing testcase data\n"); 558 return; 559 } 560 561 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 562 if (!p2) { 563 pr_err("missing testcase data\n"); 564 return; 565 } 566 567 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 568 if (!p3) { 569 pr_err("missing testcase data\n"); 570 return; 571 } 572 573 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 574 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 575 576 for (i = 0; i < 8; i++) { 577 bool passed = true; 578 579 memset(&args, 0, sizeof(args)); 580 rc = of_parse_phandle_with_args_map(np, "phandle-list", 581 "phandle", i, &args); 582 583 /* Test the values from tests-phandle.dtsi */ 584 switch (i) { 585 case 0: 586 passed &= !rc; 587 passed &= (args.np == p1); 588 passed &= (args.args_count == 1); 589 passed &= (args.args[0] == 1); 590 break; 591 case 1: 592 passed &= !rc; 593 passed &= (args.np == p3); 594 passed &= (args.args_count == 3); 595 passed &= (args.args[0] == 2); 596 passed &= (args.args[1] == 5); 597 passed &= (args.args[2] == 3); 598 break; 599 case 2: 600 passed &= (rc == -ENOENT); 601 break; 602 case 3: 603 passed &= !rc; 604 passed &= (args.np == p0); 605 passed &= (args.args_count == 0); 606 break; 607 case 4: 608 passed &= !rc; 609 passed &= (args.np == p1); 610 passed &= (args.args_count == 1); 611 passed &= (args.args[0] == 3); 612 break; 613 case 5: 614 passed &= !rc; 615 passed &= (args.np == p0); 616 passed &= (args.args_count == 0); 617 break; 618 case 6: 619 passed &= !rc; 620 passed &= (args.np == p2); 621 passed &= (args.args_count == 2); 622 passed &= (args.args[0] == 15); 623 passed &= (args.args[1] == 0x20); 624 break; 625 case 7: 626 passed &= (rc == -ENOENT); 627 break; 628 default: 629 passed = false; 630 } 631 632 unittest(passed, "index %i - data error on node %s rc=%i\n", 633 i, args.np->full_name, rc); 634 } 635 636 /* Check for missing list property */ 637 memset(&args, 0, sizeof(args)); 638 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 639 "phandle", 0, &args); 640 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 641 642 /* Check for missing cells,map,mask property */ 643 memset(&args, 0, sizeof(args)); 644 645 EXPECT_BEGIN(KERN_INFO, 646 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 647 648 rc = of_parse_phandle_with_args_map(np, "phandle-list", 649 "phandle-missing", 0, &args); 650 EXPECT_END(KERN_INFO, 651 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 652 653 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 654 655 /* Check for bad phandle in list */ 656 memset(&args, 0, sizeof(args)); 657 658 EXPECT_BEGIN(KERN_INFO, 659 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 660 661 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 662 "phandle", 0, &args); 663 EXPECT_END(KERN_INFO, 664 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 665 666 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 667 668 /* Check for incorrectly formed argument list */ 669 memset(&args, 0, sizeof(args)); 670 671 EXPECT_BEGIN(KERN_INFO, 672 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 673 674 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 675 "phandle", 1, &args); 676 EXPECT_END(KERN_INFO, 677 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 678 679 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 680 } 681 682 static void __init of_unittest_property_string(void) 683 { 684 const char *strings[4]; 685 struct device_node *np; 686 int rc; 687 688 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 689 if (!np) { 690 pr_err("No testcase data in device tree\n"); 691 return; 692 } 693 694 rc = of_property_match_string(np, "phandle-list-names", "first"); 695 unittest(rc == 0, "first expected:0 got:%i\n", rc); 696 rc = of_property_match_string(np, "phandle-list-names", "second"); 697 unittest(rc == 1, "second expected:1 got:%i\n", rc); 698 rc = of_property_match_string(np, "phandle-list-names", "third"); 699 unittest(rc == 2, "third expected:2 got:%i\n", rc); 700 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 701 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 702 rc = of_property_match_string(np, "missing-property", "blah"); 703 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 704 rc = of_property_match_string(np, "empty-property", "blah"); 705 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 706 rc = of_property_match_string(np, "unterminated-string", "blah"); 707 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 708 709 /* of_property_count_strings() tests */ 710 rc = of_property_count_strings(np, "string-property"); 711 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 712 rc = of_property_count_strings(np, "phandle-list-names"); 713 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 714 rc = of_property_count_strings(np, "unterminated-string"); 715 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 716 rc = of_property_count_strings(np, "unterminated-string-list"); 717 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 718 719 /* of_property_read_string_index() tests */ 720 rc = of_property_read_string_index(np, "string-property", 0, strings); 721 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 722 strings[0] = NULL; 723 rc = of_property_read_string_index(np, "string-property", 1, strings); 724 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 725 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 726 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 727 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 728 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 729 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 730 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 731 strings[0] = NULL; 732 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 733 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 734 strings[0] = NULL; 735 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 736 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 737 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 738 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 739 strings[0] = NULL; 740 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 741 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 742 strings[1] = NULL; 743 744 /* of_property_read_string_array() tests */ 745 rc = of_property_read_string_array(np, "string-property", strings, 4); 746 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 747 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 748 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 749 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 750 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 751 /* -- An incorrectly formed string should cause a failure */ 752 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 753 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 754 /* -- parsing the correctly formed strings should still work: */ 755 strings[2] = NULL; 756 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 757 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 758 strings[1] = NULL; 759 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 760 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 761 } 762 763 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 764 (p1)->value && (p2)->value && \ 765 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 766 !strcmp((p1)->name, (p2)->name)) 767 static void __init of_unittest_property_copy(void) 768 { 769 #ifdef CONFIG_OF_DYNAMIC 770 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 771 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 772 struct property *new; 773 774 new = __of_prop_dup(&p1, GFP_KERNEL); 775 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 776 kfree(new->value); 777 kfree(new->name); 778 kfree(new); 779 780 new = __of_prop_dup(&p2, GFP_KERNEL); 781 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 782 kfree(new->value); 783 kfree(new->name); 784 kfree(new); 785 #endif 786 } 787 788 static void __init of_unittest_changeset(void) 789 { 790 #ifdef CONFIG_OF_DYNAMIC 791 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 792 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 793 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 794 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 795 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 796 struct property *ppremove; 797 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np; 798 struct of_changeset chgset; 799 800 n1 = __of_node_dup(NULL, "n1"); 801 unittest(n1, "testcase setup failure\n"); 802 803 n2 = __of_node_dup(NULL, "n2"); 804 unittest(n2, "testcase setup failure\n"); 805 806 n21 = __of_node_dup(NULL, "n21"); 807 unittest(n21, "testcase setup failure %p\n", n21); 808 809 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 810 nremove = of_get_child_by_name(nchangeset, "node-remove"); 811 unittest(nremove, "testcase setup failure\n"); 812 813 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 814 unittest(ppadd, "testcase setup failure\n"); 815 816 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 817 unittest(ppname_n1, "testcase setup failure\n"); 818 819 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 820 unittest(ppname_n2, "testcase setup failure\n"); 821 822 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 823 unittest(ppname_n21, "testcase setup failure\n"); 824 825 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 826 unittest(ppupdate, "testcase setup failure\n"); 827 828 parent = nchangeset; 829 n1->parent = parent; 830 n2->parent = parent; 831 n21->parent = n2; 832 833 ppremove = of_find_property(parent, "prop-remove", NULL); 834 unittest(ppremove, "failed to find removal prop"); 835 836 of_changeset_init(&chgset); 837 838 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 839 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 840 841 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 842 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 843 844 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 845 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 846 847 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 848 849 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 850 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 851 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 852 853 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 854 855 of_node_put(nchangeset); 856 857 /* Make sure node names are constructed correctly */ 858 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 859 "'%pOF' not added\n", n21); 860 of_node_put(np); 861 862 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 863 864 of_changeset_destroy(&chgset); 865 866 of_node_put(n1); 867 of_node_put(n2); 868 of_node_put(n21); 869 #endif 870 } 871 872 static void __init of_unittest_dma_ranges_one(const char *path, 873 u64 expect_dma_addr, u64 expect_paddr) 874 { 875 #ifdef CONFIG_HAS_DMA 876 struct device_node *np; 877 const struct bus_dma_region *map = NULL; 878 int rc; 879 880 np = of_find_node_by_path(path); 881 if (!np) { 882 pr_err("missing testcase data\n"); 883 return; 884 } 885 886 rc = of_dma_get_range(np, &map); 887 888 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 889 890 if (!rc) { 891 phys_addr_t paddr; 892 dma_addr_t dma_addr; 893 struct device dev_bogus; 894 895 dev_bogus.dma_range_map = map; 896 paddr = dma_to_phys(&dev_bogus, expect_dma_addr); 897 dma_addr = phys_to_dma(&dev_bogus, expect_paddr); 898 899 unittest(paddr == expect_paddr, 900 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 901 &paddr, expect_paddr, np); 902 unittest(dma_addr == expect_dma_addr, 903 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 904 &dma_addr, expect_dma_addr, np); 905 906 kfree(map); 907 } 908 of_node_put(np); 909 #endif 910 } 911 912 static void __init of_unittest_parse_dma_ranges(void) 913 { 914 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 915 0x0, 0x20000000); 916 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 917 0x100000000, 0x20000000); 918 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 919 0x80000000, 0x20000000); 920 } 921 922 static void __init of_unittest_pci_dma_ranges(void) 923 { 924 struct device_node *np; 925 struct of_pci_range range; 926 struct of_pci_range_parser parser; 927 int i = 0; 928 929 if (!IS_ENABLED(CONFIG_PCI)) 930 return; 931 932 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 933 if (!np) { 934 pr_err("missing testcase data\n"); 935 return; 936 } 937 938 if (of_pci_dma_range_parser_init(&parser, np)) { 939 pr_err("missing dma-ranges property\n"); 940 return; 941 } 942 943 /* 944 * Get the dma-ranges from the device tree 945 */ 946 for_each_of_pci_range(&parser, &range) { 947 if (!i) { 948 unittest(range.size == 0x10000000, 949 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 950 np, range.size); 951 unittest(range.cpu_addr == 0x20000000, 952 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 953 range.cpu_addr, np); 954 unittest(range.pci_addr == 0x80000000, 955 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 956 range.pci_addr, np); 957 } else { 958 unittest(range.size == 0x10000000, 959 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 960 np, range.size); 961 unittest(range.cpu_addr == 0x40000000, 962 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 963 range.cpu_addr, np); 964 unittest(range.pci_addr == 0xc0000000, 965 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 966 range.pci_addr, np); 967 } 968 i++; 969 } 970 971 of_node_put(np); 972 } 973 974 static void __init of_unittest_parse_interrupts(void) 975 { 976 struct device_node *np; 977 struct of_phandle_args args; 978 int i, rc; 979 980 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 981 return; 982 983 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 984 if (!np) { 985 pr_err("missing testcase data\n"); 986 return; 987 } 988 989 for (i = 0; i < 4; i++) { 990 bool passed = true; 991 992 memset(&args, 0, sizeof(args)); 993 rc = of_irq_parse_one(np, i, &args); 994 995 passed &= !rc; 996 passed &= (args.args_count == 1); 997 passed &= (args.args[0] == (i + 1)); 998 999 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1000 i, args.np, rc); 1001 } 1002 of_node_put(np); 1003 1004 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 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 /* Test the values from tests-phandle.dtsi */ 1017 switch (i) { 1018 case 0: 1019 passed &= !rc; 1020 passed &= (args.args_count == 1); 1021 passed &= (args.args[0] == 9); 1022 break; 1023 case 1: 1024 passed &= !rc; 1025 passed &= (args.args_count == 3); 1026 passed &= (args.args[0] == 10); 1027 passed &= (args.args[1] == 11); 1028 passed &= (args.args[2] == 12); 1029 break; 1030 case 2: 1031 passed &= !rc; 1032 passed &= (args.args_count == 2); 1033 passed &= (args.args[0] == 13); 1034 passed &= (args.args[1] == 14); 1035 break; 1036 case 3: 1037 passed &= !rc; 1038 passed &= (args.args_count == 2); 1039 passed &= (args.args[0] == 15); 1040 passed &= (args.args[1] == 16); 1041 break; 1042 default: 1043 passed = false; 1044 } 1045 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1046 i, args.np, rc); 1047 } 1048 of_node_put(np); 1049 } 1050 1051 static void __init of_unittest_parse_interrupts_extended(void) 1052 { 1053 struct device_node *np; 1054 struct of_phandle_args args; 1055 int i, rc; 1056 1057 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1058 return; 1059 1060 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1061 if (!np) { 1062 pr_err("missing testcase data\n"); 1063 return; 1064 } 1065 1066 for (i = 0; i < 7; i++) { 1067 bool passed = true; 1068 1069 memset(&args, 0, sizeof(args)); 1070 rc = of_irq_parse_one(np, i, &args); 1071 1072 /* Test the values from tests-phandle.dtsi */ 1073 switch (i) { 1074 case 0: 1075 passed &= !rc; 1076 passed &= (args.args_count == 1); 1077 passed &= (args.args[0] == 1); 1078 break; 1079 case 1: 1080 passed &= !rc; 1081 passed &= (args.args_count == 3); 1082 passed &= (args.args[0] == 2); 1083 passed &= (args.args[1] == 3); 1084 passed &= (args.args[2] == 4); 1085 break; 1086 case 2: 1087 passed &= !rc; 1088 passed &= (args.args_count == 2); 1089 passed &= (args.args[0] == 5); 1090 passed &= (args.args[1] == 6); 1091 break; 1092 case 3: 1093 passed &= !rc; 1094 passed &= (args.args_count == 1); 1095 passed &= (args.args[0] == 9); 1096 break; 1097 case 4: 1098 passed &= !rc; 1099 passed &= (args.args_count == 3); 1100 passed &= (args.args[0] == 10); 1101 passed &= (args.args[1] == 11); 1102 passed &= (args.args[2] == 12); 1103 break; 1104 case 5: 1105 passed &= !rc; 1106 passed &= (args.args_count == 2); 1107 passed &= (args.args[0] == 13); 1108 passed &= (args.args[1] == 14); 1109 break; 1110 case 6: 1111 passed &= !rc; 1112 passed &= (args.args_count == 1); 1113 passed &= (args.args[0] == 15); 1114 break; 1115 default: 1116 passed = false; 1117 } 1118 1119 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1120 i, args.np, rc); 1121 } 1122 of_node_put(np); 1123 } 1124 1125 static const struct of_device_id match_node_table[] = { 1126 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1127 { .data = "B", .type = "type1", }, /* followed by type alone */ 1128 1129 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1130 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1131 { .data = "Cc", .name = "name2", .type = "type2", }, 1132 1133 { .data = "E", .compatible = "compat3" }, 1134 { .data = "G", .compatible = "compat2", }, 1135 { .data = "H", .compatible = "compat2", .name = "name5", }, 1136 { .data = "I", .compatible = "compat2", .type = "type1", }, 1137 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1138 { .data = "K", .compatible = "compat2", .name = "name9", }, 1139 {} 1140 }; 1141 1142 static struct { 1143 const char *path; 1144 const char *data; 1145 } match_node_tests[] = { 1146 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1147 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1148 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1149 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1150 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1151 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1152 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1153 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1154 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1155 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1156 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1157 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1158 }; 1159 1160 static void __init of_unittest_match_node(void) 1161 { 1162 struct device_node *np; 1163 const struct of_device_id *match; 1164 int i; 1165 1166 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1167 np = of_find_node_by_path(match_node_tests[i].path); 1168 if (!np) { 1169 unittest(0, "missing testcase node %s\n", 1170 match_node_tests[i].path); 1171 continue; 1172 } 1173 1174 match = of_match_node(match_node_table, np); 1175 if (!match) { 1176 unittest(0, "%s didn't match anything\n", 1177 match_node_tests[i].path); 1178 continue; 1179 } 1180 1181 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1182 unittest(0, "%s got wrong match. expected %s, got %s\n", 1183 match_node_tests[i].path, match_node_tests[i].data, 1184 (const char *)match->data); 1185 continue; 1186 } 1187 unittest(1, "passed"); 1188 } 1189 } 1190 1191 static struct resource test_bus_res = { 1192 .start = 0xfffffff8, 1193 .end = 0xfffffff9, 1194 .flags = IORESOURCE_MEM, 1195 }; 1196 static const struct platform_device_info test_bus_info = { 1197 .name = "unittest-bus", 1198 }; 1199 static void __init of_unittest_platform_populate(void) 1200 { 1201 int irq, rc; 1202 struct device_node *np, *child, *grandchild; 1203 struct platform_device *pdev, *test_bus; 1204 const struct of_device_id match[] = { 1205 { .compatible = "test-device", }, 1206 {} 1207 }; 1208 1209 np = of_find_node_by_path("/testcase-data"); 1210 of_platform_default_populate(np, NULL, NULL); 1211 1212 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1213 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1214 pdev = of_find_device_by_node(np); 1215 unittest(pdev, "device 1 creation failed\n"); 1216 1217 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1218 irq = platform_get_irq(pdev, 0); 1219 unittest(irq == -EPROBE_DEFER, 1220 "device deferred probe failed - %d\n", irq); 1221 1222 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1223 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1224 pdev = of_find_device_by_node(np); 1225 unittest(pdev, "device 2 creation failed\n"); 1226 1227 EXPECT_BEGIN(KERN_INFO, 1228 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1229 1230 irq = platform_get_irq(pdev, 0); 1231 1232 EXPECT_END(KERN_INFO, 1233 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1234 1235 unittest(irq < 0 && irq != -EPROBE_DEFER, 1236 "device parsing error failed - %d\n", irq); 1237 } 1238 1239 np = of_find_node_by_path("/testcase-data/platform-tests"); 1240 unittest(np, "No testcase data in device tree\n"); 1241 if (!np) 1242 return; 1243 1244 test_bus = platform_device_register_full(&test_bus_info); 1245 rc = PTR_ERR_OR_ZERO(test_bus); 1246 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1247 if (rc) { 1248 of_node_put(np); 1249 return; 1250 } 1251 test_bus->dev.of_node = np; 1252 1253 /* 1254 * Add a dummy resource to the test bus node after it is 1255 * registered to catch problems with un-inserted resources. The 1256 * DT code doesn't insert the resources, and it has caused the 1257 * kernel to oops in the past. This makes sure the same bug 1258 * doesn't crop up again. 1259 */ 1260 platform_device_add_resources(test_bus, &test_bus_res, 1); 1261 1262 of_platform_populate(np, match, NULL, &test_bus->dev); 1263 for_each_child_of_node(np, child) { 1264 for_each_child_of_node(child, grandchild) { 1265 pdev = of_find_device_by_node(grandchild); 1266 unittest(pdev, 1267 "Could not create device for node '%pOFn'\n", 1268 grandchild); 1269 of_dev_put(pdev); 1270 } 1271 } 1272 1273 of_platform_depopulate(&test_bus->dev); 1274 for_each_child_of_node(np, child) { 1275 for_each_child_of_node(child, grandchild) 1276 unittest(!of_find_device_by_node(grandchild), 1277 "device didn't get destroyed '%pOFn'\n", 1278 grandchild); 1279 } 1280 1281 platform_device_unregister(test_bus); 1282 of_node_put(np); 1283 } 1284 1285 /** 1286 * update_node_properties - adds the properties 1287 * of np into dup node (present in live tree) and 1288 * updates parent of children of np to dup. 1289 * 1290 * @np: node whose properties are being added to the live tree 1291 * @dup: node present in live tree to be updated 1292 */ 1293 static void update_node_properties(struct device_node *np, 1294 struct device_node *dup) 1295 { 1296 struct property *prop; 1297 struct property *save_next; 1298 struct device_node *child; 1299 int ret; 1300 1301 for_each_child_of_node(np, child) 1302 child->parent = dup; 1303 1304 /* 1305 * "unittest internal error: unable to add testdata property" 1306 * 1307 * If this message reports a property in node '/__symbols__' then 1308 * the respective unittest overlay contains a label that has the 1309 * same name as a label in the live devicetree. The label will 1310 * be in the live devicetree only if the devicetree source was 1311 * compiled with the '-@' option. If you encounter this error, 1312 * please consider renaming __all__ of the labels in the unittest 1313 * overlay dts files with an odd prefix that is unlikely to be 1314 * used in a real devicetree. 1315 */ 1316 1317 /* 1318 * open code for_each_property_of_node() because of_add_property() 1319 * sets prop->next to NULL 1320 */ 1321 for (prop = np->properties; prop != NULL; prop = save_next) { 1322 save_next = prop->next; 1323 ret = of_add_property(dup, prop); 1324 if (ret) { 1325 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1326 continue; 1327 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1328 np, prop->name); 1329 } 1330 } 1331 } 1332 1333 /** 1334 * attach_node_and_children - attaches nodes 1335 * and its children to live tree. 1336 * CAUTION: misleading function name - if node @np already exists in 1337 * the live tree then children of @np are *not* attached to the live 1338 * tree. This works for the current test devicetree nodes because such 1339 * nodes do not have child nodes. 1340 * 1341 * @np: Node to attach to live tree 1342 */ 1343 static void attach_node_and_children(struct device_node *np) 1344 { 1345 struct device_node *next, *dup, *child; 1346 unsigned long flags; 1347 const char *full_name; 1348 1349 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1350 1351 if (!strcmp(full_name, "/__local_fixups__") || 1352 !strcmp(full_name, "/__fixups__")) { 1353 kfree(full_name); 1354 return; 1355 } 1356 1357 dup = of_find_node_by_path(full_name); 1358 kfree(full_name); 1359 if (dup) { 1360 update_node_properties(np, dup); 1361 return; 1362 } 1363 1364 child = np->child; 1365 np->child = NULL; 1366 1367 mutex_lock(&of_mutex); 1368 raw_spin_lock_irqsave(&devtree_lock, flags); 1369 np->sibling = np->parent->child; 1370 np->parent->child = np; 1371 of_node_clear_flag(np, OF_DETACHED); 1372 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1373 1374 __of_attach_node_sysfs(np); 1375 mutex_unlock(&of_mutex); 1376 1377 while (child) { 1378 next = child->sibling; 1379 attach_node_and_children(child); 1380 child = next; 1381 } 1382 } 1383 1384 /** 1385 * unittest_data_add - Reads, copies data from 1386 * linked tree and attaches it to the live tree 1387 */ 1388 static int __init unittest_data_add(void) 1389 { 1390 void *unittest_data; 1391 struct device_node *unittest_data_node, *np; 1392 /* 1393 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1394 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1395 */ 1396 extern uint8_t __dtb_testcases_begin[]; 1397 extern uint8_t __dtb_testcases_end[]; 1398 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1399 int rc; 1400 1401 if (!size) { 1402 pr_warn("%s: No testcase data to attach; not running tests\n", 1403 __func__); 1404 return -ENODATA; 1405 } 1406 1407 /* creating copy */ 1408 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); 1409 if (!unittest_data) 1410 return -ENOMEM; 1411 1412 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node); 1413 if (!unittest_data_node) { 1414 pr_warn("%s: No tree to attach; not running tests\n", __func__); 1415 kfree(unittest_data); 1416 return -ENODATA; 1417 } 1418 1419 /* 1420 * This lock normally encloses of_resolve_phandles() 1421 */ 1422 of_overlay_mutex_lock(); 1423 1424 rc = of_resolve_phandles(unittest_data_node); 1425 if (rc) { 1426 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1427 of_overlay_mutex_unlock(); 1428 return -EINVAL; 1429 } 1430 1431 if (!of_root) { 1432 of_root = unittest_data_node; 1433 for_each_of_allnodes(np) 1434 __of_attach_node_sysfs(np); 1435 of_aliases = of_find_node_by_path("/aliases"); 1436 of_chosen = of_find_node_by_path("/chosen"); 1437 of_overlay_mutex_unlock(); 1438 return 0; 1439 } 1440 1441 EXPECT_BEGIN(KERN_INFO, 1442 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1443 1444 /* attach the sub-tree to live tree */ 1445 np = unittest_data_node->child; 1446 while (np) { 1447 struct device_node *next = np->sibling; 1448 1449 np->parent = of_root; 1450 attach_node_and_children(np); 1451 np = next; 1452 } 1453 1454 EXPECT_END(KERN_INFO, 1455 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1456 1457 of_overlay_mutex_unlock(); 1458 1459 return 0; 1460 } 1461 1462 #ifdef CONFIG_OF_OVERLAY 1463 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1464 1465 static int unittest_probe(struct platform_device *pdev) 1466 { 1467 struct device *dev = &pdev->dev; 1468 struct device_node *np = dev->of_node; 1469 1470 if (np == NULL) { 1471 dev_err(dev, "No OF data for device\n"); 1472 return -EINVAL; 1473 1474 } 1475 1476 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1477 1478 of_platform_populate(np, NULL, NULL, &pdev->dev); 1479 1480 return 0; 1481 } 1482 1483 static int unittest_remove(struct platform_device *pdev) 1484 { 1485 struct device *dev = &pdev->dev; 1486 struct device_node *np = dev->of_node; 1487 1488 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1489 return 0; 1490 } 1491 1492 static const struct of_device_id unittest_match[] = { 1493 { .compatible = "unittest", }, 1494 {}, 1495 }; 1496 1497 static struct platform_driver unittest_driver = { 1498 .probe = unittest_probe, 1499 .remove = unittest_remove, 1500 .driver = { 1501 .name = "unittest", 1502 .of_match_table = of_match_ptr(unittest_match), 1503 }, 1504 }; 1505 1506 /* get the platform device instantiated at the path */ 1507 static struct platform_device *of_path_to_platform_device(const char *path) 1508 { 1509 struct device_node *np; 1510 struct platform_device *pdev; 1511 1512 np = of_find_node_by_path(path); 1513 if (np == NULL) 1514 return NULL; 1515 1516 pdev = of_find_device_by_node(np); 1517 of_node_put(np); 1518 1519 return pdev; 1520 } 1521 1522 /* find out if a platform device exists at that path */ 1523 static int of_path_platform_device_exists(const char *path) 1524 { 1525 struct platform_device *pdev; 1526 1527 pdev = of_path_to_platform_device(path); 1528 platform_device_put(pdev); 1529 return pdev != NULL; 1530 } 1531 1532 #ifdef CONFIG_OF_GPIO 1533 1534 struct unittest_gpio_dev { 1535 struct gpio_chip chip; 1536 }; 1537 1538 static int unittest_gpio_chip_request_count; 1539 static int unittest_gpio_probe_count; 1540 static int unittest_gpio_probe_pass_count; 1541 1542 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1543 { 1544 unittest_gpio_chip_request_count++; 1545 1546 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1547 unittest_gpio_chip_request_count); 1548 return 0; 1549 } 1550 1551 static int unittest_gpio_probe(struct platform_device *pdev) 1552 { 1553 struct unittest_gpio_dev *devptr; 1554 int ret; 1555 1556 unittest_gpio_probe_count++; 1557 1558 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1559 if (!devptr) 1560 return -ENOMEM; 1561 1562 platform_set_drvdata(pdev, devptr); 1563 1564 devptr->chip.of_node = pdev->dev.of_node; 1565 devptr->chip.label = "of-unittest-gpio"; 1566 devptr->chip.base = -1; /* dynamic allocation */ 1567 devptr->chip.ngpio = 5; 1568 devptr->chip.request = unittest_gpio_chip_request; 1569 1570 ret = gpiochip_add_data(&devptr->chip, NULL); 1571 1572 unittest(!ret, 1573 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1574 1575 if (!ret) 1576 unittest_gpio_probe_pass_count++; 1577 return ret; 1578 } 1579 1580 static int unittest_gpio_remove(struct platform_device *pdev) 1581 { 1582 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1583 struct device *dev = &pdev->dev; 1584 struct device_node *np = pdev->dev.of_node; 1585 1586 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1587 1588 if (!gdev) 1589 return -EINVAL; 1590 1591 if (gdev->chip.base != -1) 1592 gpiochip_remove(&gdev->chip); 1593 1594 platform_set_drvdata(pdev, NULL); 1595 kfree(gdev); 1596 1597 return 0; 1598 } 1599 1600 static const struct of_device_id unittest_gpio_id[] = { 1601 { .compatible = "unittest-gpio", }, 1602 {} 1603 }; 1604 1605 static struct platform_driver unittest_gpio_driver = { 1606 .probe = unittest_gpio_probe, 1607 .remove = unittest_gpio_remove, 1608 .driver = { 1609 .name = "unittest-gpio", 1610 .of_match_table = of_match_ptr(unittest_gpio_id), 1611 }, 1612 }; 1613 1614 static void __init of_unittest_overlay_gpio(void) 1615 { 1616 int chip_request_count; 1617 int probe_pass_count; 1618 int ret; 1619 1620 /* 1621 * tests: apply overlays before registering driver 1622 * Similar to installing a driver as a module, the 1623 * driver is registered after applying the overlays. 1624 * 1625 * The overlays are applied by overlay_data_apply() 1626 * instead of of_unittest_apply_overlay() so that they 1627 * will not be tracked. Thus they will not be removed 1628 * by of_unittest_destroy_tracked_overlays(). 1629 * 1630 * - apply overlay_gpio_01 1631 * - apply overlay_gpio_02a 1632 * - apply overlay_gpio_02b 1633 * - register driver 1634 * 1635 * register driver will result in 1636 * - probe and processing gpio hog for overlay_gpio_01 1637 * - probe for overlay_gpio_02a 1638 * - processing gpio for overlay_gpio_02b 1639 */ 1640 1641 probe_pass_count = unittest_gpio_probe_pass_count; 1642 chip_request_count = unittest_gpio_chip_request_count; 1643 1644 /* 1645 * overlay_gpio_01 contains gpio node and child gpio hog node 1646 * overlay_gpio_02a contains gpio node 1647 * overlay_gpio_02b contains child gpio hog node 1648 */ 1649 1650 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1651 "Adding overlay 'overlay_gpio_01' failed\n"); 1652 1653 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1654 "Adding overlay 'overlay_gpio_02a' failed\n"); 1655 1656 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1657 "Adding overlay 'overlay_gpio_02b' failed\n"); 1658 1659 /* 1660 * messages are the result of the probes, after the 1661 * driver is registered 1662 */ 1663 1664 EXPECT_BEGIN(KERN_INFO, 1665 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1666 1667 EXPECT_BEGIN(KERN_INFO, 1668 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1669 1670 ret = platform_driver_register(&unittest_gpio_driver); 1671 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1672 return; 1673 1674 EXPECT_END(KERN_INFO, 1675 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1676 EXPECT_END(KERN_INFO, 1677 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1678 1679 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1680 "unittest_gpio_probe() failed or not called\n"); 1681 1682 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1683 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1684 unittest_gpio_chip_request_count - chip_request_count); 1685 1686 /* 1687 * tests: apply overlays after registering driver 1688 * 1689 * Similar to a driver built-in to the kernel, the 1690 * driver is registered before applying the overlays. 1691 * 1692 * overlay_gpio_03 contains gpio node and child gpio hog node 1693 * 1694 * - apply overlay_gpio_03 1695 * 1696 * apply overlay will result in 1697 * - probe and processing gpio hog. 1698 */ 1699 1700 probe_pass_count = unittest_gpio_probe_pass_count; 1701 chip_request_count = unittest_gpio_chip_request_count; 1702 1703 EXPECT_BEGIN(KERN_INFO, 1704 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1705 1706 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1707 1708 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1709 "Adding overlay 'overlay_gpio_03' failed\n"); 1710 1711 EXPECT_END(KERN_INFO, 1712 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1713 1714 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1715 "unittest_gpio_probe() failed or not called\n"); 1716 1717 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1718 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1719 unittest_gpio_chip_request_count - chip_request_count); 1720 1721 /* 1722 * overlay_gpio_04a contains gpio node 1723 * 1724 * - apply overlay_gpio_04a 1725 * 1726 * apply the overlay will result in 1727 * - probe for overlay_gpio_04a 1728 */ 1729 1730 probe_pass_count = unittest_gpio_probe_pass_count; 1731 chip_request_count = unittest_gpio_chip_request_count; 1732 1733 /* overlay_gpio_04a contains gpio node */ 1734 1735 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1736 "Adding overlay 'overlay_gpio_04a' failed\n"); 1737 1738 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1739 "unittest_gpio_probe() failed or not called\n"); 1740 1741 /* 1742 * overlay_gpio_04b contains child gpio hog node 1743 * 1744 * - apply overlay_gpio_04b 1745 * 1746 * apply the overlay will result in 1747 * - processing gpio for overlay_gpio_04b 1748 */ 1749 1750 EXPECT_BEGIN(KERN_INFO, 1751 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1752 1753 /* overlay_gpio_04b contains child gpio hog node */ 1754 1755 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1756 "Adding overlay 'overlay_gpio_04b' failed\n"); 1757 1758 EXPECT_END(KERN_INFO, 1759 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1760 1761 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1762 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1763 unittest_gpio_chip_request_count - chip_request_count); 1764 } 1765 1766 #else 1767 1768 static void __init of_unittest_overlay_gpio(void) 1769 { 1770 /* skip tests */ 1771 } 1772 1773 #endif 1774 1775 #if IS_BUILTIN(CONFIG_I2C) 1776 1777 /* get the i2c client device instantiated at the path */ 1778 static struct i2c_client *of_path_to_i2c_client(const char *path) 1779 { 1780 struct device_node *np; 1781 struct i2c_client *client; 1782 1783 np = of_find_node_by_path(path); 1784 if (np == NULL) 1785 return NULL; 1786 1787 client = of_find_i2c_device_by_node(np); 1788 of_node_put(np); 1789 1790 return client; 1791 } 1792 1793 /* find out if a i2c client device exists at that path */ 1794 static int of_path_i2c_client_exists(const char *path) 1795 { 1796 struct i2c_client *client; 1797 1798 client = of_path_to_i2c_client(path); 1799 if (client) 1800 put_device(&client->dev); 1801 return client != NULL; 1802 } 1803 #else 1804 static int of_path_i2c_client_exists(const char *path) 1805 { 1806 return 0; 1807 } 1808 #endif 1809 1810 enum overlay_type { 1811 PDEV_OVERLAY, 1812 I2C_OVERLAY 1813 }; 1814 1815 static int of_path_device_type_exists(const char *path, 1816 enum overlay_type ovtype) 1817 { 1818 switch (ovtype) { 1819 case PDEV_OVERLAY: 1820 return of_path_platform_device_exists(path); 1821 case I2C_OVERLAY: 1822 return of_path_i2c_client_exists(path); 1823 } 1824 return 0; 1825 } 1826 1827 static const char *unittest_path(int nr, enum overlay_type ovtype) 1828 { 1829 const char *base; 1830 static char buf[256]; 1831 1832 switch (ovtype) { 1833 case PDEV_OVERLAY: 1834 base = "/testcase-data/overlay-node/test-bus"; 1835 break; 1836 case I2C_OVERLAY: 1837 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1838 break; 1839 default: 1840 buf[0] = '\0'; 1841 return buf; 1842 } 1843 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1844 buf[sizeof(buf) - 1] = '\0'; 1845 return buf; 1846 } 1847 1848 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1849 { 1850 const char *path; 1851 1852 path = unittest_path(unittest_nr, ovtype); 1853 1854 switch (ovtype) { 1855 case PDEV_OVERLAY: 1856 return of_path_platform_device_exists(path); 1857 case I2C_OVERLAY: 1858 return of_path_i2c_client_exists(path); 1859 } 1860 return 0; 1861 } 1862 1863 static const char *overlay_name_from_nr(int nr) 1864 { 1865 static char buf[256]; 1866 1867 snprintf(buf, sizeof(buf) - 1, 1868 "overlay_%d", nr); 1869 buf[sizeof(buf) - 1] = '\0'; 1870 1871 return buf; 1872 } 1873 1874 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1875 1876 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */ 1877 1878 #define MAX_UNITTEST_OVERLAYS 256 1879 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1880 static int overlay_first_id = -1; 1881 1882 static long of_unittest_overlay_tracked(int id) 1883 { 1884 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1885 return 0; 1886 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id); 1887 } 1888 1889 static void of_unittest_track_overlay(int id) 1890 { 1891 if (overlay_first_id < 0) 1892 overlay_first_id = id; 1893 id -= overlay_first_id; 1894 1895 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1896 return; 1897 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1898 } 1899 1900 static void of_unittest_untrack_overlay(int id) 1901 { 1902 if (overlay_first_id < 0) 1903 return; 1904 id -= overlay_first_id; 1905 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1906 return; 1907 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1908 } 1909 1910 static void of_unittest_destroy_tracked_overlays(void) 1911 { 1912 int id, ret, defers, ovcs_id; 1913 1914 if (overlay_first_id < 0) 1915 return; 1916 1917 /* try until no defers */ 1918 do { 1919 defers = 0; 1920 /* remove in reverse order */ 1921 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1922 if (!of_unittest_overlay_tracked(id)) 1923 continue; 1924 1925 ovcs_id = id + overlay_first_id; 1926 ret = of_overlay_remove(&ovcs_id); 1927 if (ret == -ENODEV) { 1928 pr_warn("%s: no overlay to destroy for #%d\n", 1929 __func__, id + overlay_first_id); 1930 continue; 1931 } 1932 if (ret != 0) { 1933 defers++; 1934 pr_warn("%s: overlay destroy failed for #%d\n", 1935 __func__, id + overlay_first_id); 1936 continue; 1937 } 1938 1939 of_unittest_untrack_overlay(id); 1940 } 1941 } while (defers > 0); 1942 } 1943 1944 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1945 { 1946 const char *overlay_name; 1947 1948 overlay_name = overlay_name_from_nr(overlay_nr); 1949 1950 if (!overlay_data_apply(overlay_name, overlay_id)) { 1951 unittest(0, "could not apply overlay \"%s\"\n", 1952 overlay_name); 1953 return -EFAULT; 1954 } 1955 of_unittest_track_overlay(*overlay_id); 1956 1957 return 0; 1958 } 1959 1960 /* apply an overlay while checking before and after states */ 1961 static int __init of_unittest_apply_overlay_check(int overlay_nr, 1962 int unittest_nr, int before, int after, 1963 enum overlay_type ovtype) 1964 { 1965 int ret, ovcs_id; 1966 1967 /* unittest device must not be in before state */ 1968 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1969 unittest(0, "%s with device @\"%s\" %s\n", 1970 overlay_name_from_nr(overlay_nr), 1971 unittest_path(unittest_nr, ovtype), 1972 !before ? "enabled" : "disabled"); 1973 return -EINVAL; 1974 } 1975 1976 ovcs_id = 0; 1977 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 1978 if (ret != 0) { 1979 /* of_unittest_apply_overlay already called unittest() */ 1980 return ret; 1981 } 1982 1983 /* unittest device must be to set to after state */ 1984 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 1985 unittest(0, "%s failed to create @\"%s\" %s\n", 1986 overlay_name_from_nr(overlay_nr), 1987 unittest_path(unittest_nr, ovtype), 1988 !after ? "enabled" : "disabled"); 1989 return -EINVAL; 1990 } 1991 1992 return 0; 1993 } 1994 1995 /* apply an overlay and then revert it while checking before, after states */ 1996 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 1997 int unittest_nr, int before, int after, 1998 enum overlay_type ovtype) 1999 { 2000 int ret, ovcs_id, save_id; 2001 2002 /* unittest device must be in before state */ 2003 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2004 unittest(0, "%s with device @\"%s\" %s\n", 2005 overlay_name_from_nr(overlay_nr), 2006 unittest_path(unittest_nr, ovtype), 2007 !before ? "enabled" : "disabled"); 2008 return -EINVAL; 2009 } 2010 2011 /* apply the overlay */ 2012 ovcs_id = 0; 2013 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2014 if (ret != 0) { 2015 /* of_unittest_apply_overlay already called unittest() */ 2016 return ret; 2017 } 2018 2019 /* unittest device must be in after state */ 2020 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2021 unittest(0, "%s failed to create @\"%s\" %s\n", 2022 overlay_name_from_nr(overlay_nr), 2023 unittest_path(unittest_nr, ovtype), 2024 !after ? "enabled" : "disabled"); 2025 return -EINVAL; 2026 } 2027 2028 save_id = ovcs_id; 2029 ret = of_overlay_remove(&ovcs_id); 2030 if (ret != 0) { 2031 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2032 overlay_name_from_nr(overlay_nr), 2033 unittest_path(unittest_nr, ovtype)); 2034 return ret; 2035 } 2036 of_unittest_untrack_overlay(save_id); 2037 2038 /* unittest device must be again in before state */ 2039 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2040 unittest(0, "%s with device @\"%s\" %s\n", 2041 overlay_name_from_nr(overlay_nr), 2042 unittest_path(unittest_nr, ovtype), 2043 !before ? "enabled" : "disabled"); 2044 return -EINVAL; 2045 } 2046 2047 return 0; 2048 } 2049 2050 /* test activation of device */ 2051 static void __init of_unittest_overlay_0(void) 2052 { 2053 int ret; 2054 2055 EXPECT_BEGIN(KERN_INFO, 2056 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2057 2058 /* device should enable */ 2059 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2060 2061 EXPECT_END(KERN_INFO, 2062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2063 2064 if (ret) 2065 return; 2066 2067 unittest(1, "overlay test %d passed\n", 0); 2068 } 2069 2070 /* test deactivation of device */ 2071 static void __init of_unittest_overlay_1(void) 2072 { 2073 int ret; 2074 2075 EXPECT_BEGIN(KERN_INFO, 2076 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2077 2078 /* device should disable */ 2079 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2080 2081 EXPECT_END(KERN_INFO, 2082 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2083 2084 if (ret) 2085 return; 2086 2087 unittest(1, "overlay test %d passed\n", 1); 2088 2089 } 2090 2091 /* test activation of device */ 2092 static void __init of_unittest_overlay_2(void) 2093 { 2094 int ret; 2095 2096 EXPECT_BEGIN(KERN_INFO, 2097 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2098 2099 /* device should enable */ 2100 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2101 2102 EXPECT_END(KERN_INFO, 2103 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2104 2105 if (ret) 2106 return; 2107 unittest(1, "overlay test %d passed\n", 2); 2108 } 2109 2110 /* test deactivation of device */ 2111 static void __init of_unittest_overlay_3(void) 2112 { 2113 int ret; 2114 2115 EXPECT_BEGIN(KERN_INFO, 2116 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2117 2118 /* device should disable */ 2119 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2120 2121 EXPECT_END(KERN_INFO, 2122 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2123 2124 if (ret) 2125 return; 2126 2127 unittest(1, "overlay test %d passed\n", 3); 2128 } 2129 2130 /* test activation of a full device node */ 2131 static void __init of_unittest_overlay_4(void) 2132 { 2133 /* device should disable */ 2134 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2135 return; 2136 2137 unittest(1, "overlay test %d passed\n", 4); 2138 } 2139 2140 /* test overlay apply/revert sequence */ 2141 static void __init of_unittest_overlay_5(void) 2142 { 2143 int ret; 2144 2145 EXPECT_BEGIN(KERN_INFO, 2146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2147 2148 /* device should disable */ 2149 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2150 2151 EXPECT_END(KERN_INFO, 2152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2153 2154 if (ret) 2155 return; 2156 2157 unittest(1, "overlay test %d passed\n", 5); 2158 } 2159 2160 /* test overlay application in sequence */ 2161 static void __init of_unittest_overlay_6(void) 2162 { 2163 int i, ov_id[2], ovcs_id; 2164 int overlay_nr = 6, unittest_nr = 6; 2165 int before = 0, after = 1; 2166 const char *overlay_name; 2167 2168 int ret; 2169 2170 /* unittest device must be in before state */ 2171 for (i = 0; i < 2; i++) { 2172 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2173 != before) { 2174 unittest(0, "%s with device @\"%s\" %s\n", 2175 overlay_name_from_nr(overlay_nr + i), 2176 unittest_path(unittest_nr + i, 2177 PDEV_OVERLAY), 2178 !before ? "enabled" : "disabled"); 2179 return; 2180 } 2181 } 2182 2183 /* apply the overlays */ 2184 2185 EXPECT_BEGIN(KERN_INFO, 2186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2187 2188 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2189 2190 ret = overlay_data_apply(overlay_name, &ovcs_id); 2191 2192 if (!ret) { 2193 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2194 return; 2195 } 2196 ov_id[0] = ovcs_id; 2197 of_unittest_track_overlay(ov_id[0]); 2198 2199 EXPECT_END(KERN_INFO, 2200 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2201 2202 EXPECT_BEGIN(KERN_INFO, 2203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2204 2205 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2206 2207 ret = overlay_data_apply(overlay_name, &ovcs_id); 2208 2209 if (!ret) { 2210 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2211 return; 2212 } 2213 ov_id[1] = ovcs_id; 2214 of_unittest_track_overlay(ov_id[1]); 2215 2216 EXPECT_END(KERN_INFO, 2217 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2218 2219 2220 for (i = 0; i < 2; i++) { 2221 /* unittest device must be in after state */ 2222 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2223 != after) { 2224 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2225 overlay_name_from_nr(overlay_nr + i), 2226 unittest_path(unittest_nr + i, 2227 PDEV_OVERLAY), 2228 !after ? "enabled" : "disabled"); 2229 return; 2230 } 2231 } 2232 2233 for (i = 1; i >= 0; i--) { 2234 ovcs_id = ov_id[i]; 2235 if (of_overlay_remove(&ovcs_id)) { 2236 unittest(0, "%s failed destroy @\"%s\"\n", 2237 overlay_name_from_nr(overlay_nr + i), 2238 unittest_path(unittest_nr + i, 2239 PDEV_OVERLAY)); 2240 return; 2241 } 2242 of_unittest_untrack_overlay(ov_id[i]); 2243 } 2244 2245 for (i = 0; i < 2; i++) { 2246 /* unittest device must be again in before state */ 2247 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2248 != before) { 2249 unittest(0, "%s with device @\"%s\" %s\n", 2250 overlay_name_from_nr(overlay_nr + i), 2251 unittest_path(unittest_nr + i, 2252 PDEV_OVERLAY), 2253 !before ? "enabled" : "disabled"); 2254 return; 2255 } 2256 } 2257 2258 unittest(1, "overlay test %d passed\n", 6); 2259 2260 } 2261 2262 /* test overlay application in sequence */ 2263 static void __init of_unittest_overlay_8(void) 2264 { 2265 int i, ov_id[2], ovcs_id; 2266 int overlay_nr = 8, unittest_nr = 8; 2267 const char *overlay_name; 2268 int ret; 2269 2270 /* we don't care about device state in this test */ 2271 2272 EXPECT_BEGIN(KERN_INFO, 2273 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2274 2275 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2276 2277 ret = overlay_data_apply(overlay_name, &ovcs_id); 2278 if (!ret) 2279 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2280 2281 EXPECT_END(KERN_INFO, 2282 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2283 2284 if (!ret) 2285 return; 2286 2287 ov_id[0] = ovcs_id; 2288 of_unittest_track_overlay(ov_id[0]); 2289 2290 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2291 2292 EXPECT_BEGIN(KERN_INFO, 2293 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2294 2295 /* apply the overlays */ 2296 ret = overlay_data_apply(overlay_name, &ovcs_id); 2297 2298 EXPECT_END(KERN_INFO, 2299 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2300 2301 if (!ret) { 2302 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2303 return; 2304 } 2305 2306 ov_id[1] = ovcs_id; 2307 of_unittest_track_overlay(ov_id[1]); 2308 2309 /* now try to remove first overlay (it should fail) */ 2310 ovcs_id = ov_id[0]; 2311 2312 EXPECT_BEGIN(KERN_INFO, 2313 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2314 2315 EXPECT_BEGIN(KERN_INFO, 2316 "OF: overlay: overlay #6 is not topmost"); 2317 2318 ret = of_overlay_remove(&ovcs_id); 2319 2320 EXPECT_END(KERN_INFO, 2321 "OF: overlay: overlay #6 is not topmost"); 2322 2323 EXPECT_END(KERN_INFO, 2324 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2325 2326 if (!ret) { 2327 unittest(0, "%s was destroyed @\"%s\"\n", 2328 overlay_name_from_nr(overlay_nr + 0), 2329 unittest_path(unittest_nr, 2330 PDEV_OVERLAY)); 2331 return; 2332 } 2333 2334 /* removing them in order should work */ 2335 for (i = 1; i >= 0; i--) { 2336 ovcs_id = ov_id[i]; 2337 if (of_overlay_remove(&ovcs_id)) { 2338 unittest(0, "%s not destroyed @\"%s\"\n", 2339 overlay_name_from_nr(overlay_nr + i), 2340 unittest_path(unittest_nr, 2341 PDEV_OVERLAY)); 2342 return; 2343 } 2344 of_unittest_untrack_overlay(ov_id[i]); 2345 } 2346 2347 unittest(1, "overlay test %d passed\n", 8); 2348 } 2349 2350 /* test insertion of a bus with parent devices */ 2351 static void __init of_unittest_overlay_10(void) 2352 { 2353 int ret; 2354 char *child_path; 2355 2356 /* device should disable */ 2357 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2358 2359 if (unittest(ret == 0, 2360 "overlay test %d failed; overlay application\n", 10)) 2361 return; 2362 2363 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2364 unittest_path(10, PDEV_OVERLAY)); 2365 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2366 return; 2367 2368 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2369 kfree(child_path); 2370 2371 unittest(ret, "overlay test %d failed; no child device\n", 10); 2372 } 2373 2374 /* test insertion of a bus with parent devices (and revert) */ 2375 static void __init of_unittest_overlay_11(void) 2376 { 2377 int ret; 2378 2379 /* device should disable */ 2380 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2381 PDEV_OVERLAY); 2382 2383 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2384 } 2385 2386 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2387 2388 struct unittest_i2c_bus_data { 2389 struct platform_device *pdev; 2390 struct i2c_adapter adap; 2391 }; 2392 2393 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2394 struct i2c_msg *msgs, int num) 2395 { 2396 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2397 2398 (void)std; 2399 2400 return num; 2401 } 2402 2403 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2404 { 2405 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2406 } 2407 2408 static const struct i2c_algorithm unittest_i2c_algo = { 2409 .master_xfer = unittest_i2c_master_xfer, 2410 .functionality = unittest_i2c_functionality, 2411 }; 2412 2413 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2414 { 2415 struct device *dev = &pdev->dev; 2416 struct device_node *np = dev->of_node; 2417 struct unittest_i2c_bus_data *std; 2418 struct i2c_adapter *adap; 2419 int ret; 2420 2421 if (np == NULL) { 2422 dev_err(dev, "No OF data for device\n"); 2423 return -EINVAL; 2424 2425 } 2426 2427 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2428 2429 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2430 if (!std) 2431 return -ENOMEM; 2432 2433 /* link them together */ 2434 std->pdev = pdev; 2435 platform_set_drvdata(pdev, std); 2436 2437 adap = &std->adap; 2438 i2c_set_adapdata(adap, std); 2439 adap->nr = -1; 2440 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2441 adap->class = I2C_CLASS_DEPRECATED; 2442 adap->algo = &unittest_i2c_algo; 2443 adap->dev.parent = dev; 2444 adap->dev.of_node = dev->of_node; 2445 adap->timeout = 5 * HZ; 2446 adap->retries = 3; 2447 2448 ret = i2c_add_numbered_adapter(adap); 2449 if (ret != 0) { 2450 dev_err(dev, "Failed to add I2C adapter\n"); 2451 return ret; 2452 } 2453 2454 return 0; 2455 } 2456 2457 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2458 { 2459 struct device *dev = &pdev->dev; 2460 struct device_node *np = dev->of_node; 2461 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2462 2463 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2464 i2c_del_adapter(&std->adap); 2465 2466 return 0; 2467 } 2468 2469 static const struct of_device_id unittest_i2c_bus_match[] = { 2470 { .compatible = "unittest-i2c-bus", }, 2471 {}, 2472 }; 2473 2474 static struct platform_driver unittest_i2c_bus_driver = { 2475 .probe = unittest_i2c_bus_probe, 2476 .remove = unittest_i2c_bus_remove, 2477 .driver = { 2478 .name = "unittest-i2c-bus", 2479 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2480 }, 2481 }; 2482 2483 static int unittest_i2c_dev_probe(struct i2c_client *client, 2484 const struct i2c_device_id *id) 2485 { 2486 struct device *dev = &client->dev; 2487 struct device_node *np = client->dev.of_node; 2488 2489 if (!np) { 2490 dev_err(dev, "No OF node\n"); 2491 return -EINVAL; 2492 } 2493 2494 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2495 2496 return 0; 2497 }; 2498 2499 static int unittest_i2c_dev_remove(struct i2c_client *client) 2500 { 2501 struct device *dev = &client->dev; 2502 struct device_node *np = client->dev.of_node; 2503 2504 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2505 return 0; 2506 } 2507 2508 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2509 { .name = "unittest-i2c-dev" }, 2510 { } 2511 }; 2512 2513 static struct i2c_driver unittest_i2c_dev_driver = { 2514 .driver = { 2515 .name = "unittest-i2c-dev", 2516 }, 2517 .probe = unittest_i2c_dev_probe, 2518 .remove = unittest_i2c_dev_remove, 2519 .id_table = unittest_i2c_dev_id, 2520 }; 2521 2522 #if IS_BUILTIN(CONFIG_I2C_MUX) 2523 2524 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2525 { 2526 return 0; 2527 } 2528 2529 static int unittest_i2c_mux_probe(struct i2c_client *client, 2530 const struct i2c_device_id *id) 2531 { 2532 int i, nchans; 2533 struct device *dev = &client->dev; 2534 struct i2c_adapter *adap = client->adapter; 2535 struct device_node *np = client->dev.of_node, *child; 2536 struct i2c_mux_core *muxc; 2537 u32 reg, max_reg; 2538 2539 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2540 2541 if (!np) { 2542 dev_err(dev, "No OF node\n"); 2543 return -EINVAL; 2544 } 2545 2546 max_reg = (u32)-1; 2547 for_each_child_of_node(np, child) { 2548 if (of_property_read_u32(child, "reg", ®)) 2549 continue; 2550 if (max_reg == (u32)-1 || reg > max_reg) 2551 max_reg = reg; 2552 } 2553 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2554 if (nchans == 0) { 2555 dev_err(dev, "No channels\n"); 2556 return -EINVAL; 2557 } 2558 2559 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2560 unittest_i2c_mux_select_chan, NULL); 2561 if (!muxc) 2562 return -ENOMEM; 2563 for (i = 0; i < nchans; i++) { 2564 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2565 dev_err(dev, "Failed to register mux #%d\n", i); 2566 i2c_mux_del_adapters(muxc); 2567 return -ENODEV; 2568 } 2569 } 2570 2571 i2c_set_clientdata(client, muxc); 2572 2573 return 0; 2574 }; 2575 2576 static int unittest_i2c_mux_remove(struct i2c_client *client) 2577 { 2578 struct device *dev = &client->dev; 2579 struct device_node *np = client->dev.of_node; 2580 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2581 2582 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2583 i2c_mux_del_adapters(muxc); 2584 return 0; 2585 } 2586 2587 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2588 { .name = "unittest-i2c-mux" }, 2589 { } 2590 }; 2591 2592 static struct i2c_driver unittest_i2c_mux_driver = { 2593 .driver = { 2594 .name = "unittest-i2c-mux", 2595 }, 2596 .probe = unittest_i2c_mux_probe, 2597 .remove = unittest_i2c_mux_remove, 2598 .id_table = unittest_i2c_mux_id, 2599 }; 2600 2601 #endif 2602 2603 static int of_unittest_overlay_i2c_init(void) 2604 { 2605 int ret; 2606 2607 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2608 if (unittest(ret == 0, 2609 "could not register unittest i2c device driver\n")) 2610 return ret; 2611 2612 ret = platform_driver_register(&unittest_i2c_bus_driver); 2613 2614 if (unittest(ret == 0, 2615 "could not register unittest i2c bus driver\n")) 2616 return ret; 2617 2618 #if IS_BUILTIN(CONFIG_I2C_MUX) 2619 2620 EXPECT_BEGIN(KERN_INFO, 2621 "i2c i2c-1: Added multiplexed i2c bus 2"); 2622 2623 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2624 2625 EXPECT_END(KERN_INFO, 2626 "i2c i2c-1: Added multiplexed i2c bus 2"); 2627 2628 if (unittest(ret == 0, 2629 "could not register unittest i2c mux driver\n")) 2630 return ret; 2631 #endif 2632 2633 return 0; 2634 } 2635 2636 static void of_unittest_overlay_i2c_cleanup(void) 2637 { 2638 #if IS_BUILTIN(CONFIG_I2C_MUX) 2639 i2c_del_driver(&unittest_i2c_mux_driver); 2640 #endif 2641 platform_driver_unregister(&unittest_i2c_bus_driver); 2642 i2c_del_driver(&unittest_i2c_dev_driver); 2643 } 2644 2645 static void __init of_unittest_overlay_i2c_12(void) 2646 { 2647 int ret; 2648 2649 /* device should enable */ 2650 EXPECT_BEGIN(KERN_INFO, 2651 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2652 2653 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2654 2655 EXPECT_END(KERN_INFO, 2656 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2657 2658 if (ret) 2659 return; 2660 2661 unittest(1, "overlay test %d passed\n", 12); 2662 } 2663 2664 /* test deactivation of device */ 2665 static void __init of_unittest_overlay_i2c_13(void) 2666 { 2667 int ret; 2668 2669 EXPECT_BEGIN(KERN_INFO, 2670 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2671 2672 /* device should disable */ 2673 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2674 2675 EXPECT_END(KERN_INFO, 2676 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2677 2678 if (ret) 2679 return; 2680 2681 unittest(1, "overlay test %d passed\n", 13); 2682 } 2683 2684 /* just check for i2c mux existence */ 2685 static void of_unittest_overlay_i2c_14(void) 2686 { 2687 } 2688 2689 static void __init of_unittest_overlay_i2c_15(void) 2690 { 2691 int ret; 2692 2693 /* device should enable */ 2694 EXPECT_BEGIN(KERN_INFO, 2695 "i2c i2c-1: Added multiplexed i2c bus 3"); 2696 2697 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2698 2699 EXPECT_END(KERN_INFO, 2700 "i2c i2c-1: Added multiplexed i2c bus 3"); 2701 2702 if (ret) 2703 return; 2704 2705 unittest(1, "overlay test %d passed\n", 15); 2706 } 2707 2708 #else 2709 2710 static inline void of_unittest_overlay_i2c_14(void) { } 2711 static inline void of_unittest_overlay_i2c_15(void) { } 2712 2713 #endif 2714 2715 static void __init of_unittest_overlay(void) 2716 { 2717 struct device_node *bus_np = NULL; 2718 2719 if (platform_driver_register(&unittest_driver)) { 2720 unittest(0, "could not register unittest driver\n"); 2721 goto out; 2722 } 2723 2724 bus_np = of_find_node_by_path(bus_path); 2725 if (bus_np == NULL) { 2726 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2727 goto out; 2728 } 2729 2730 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2731 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2732 goto out; 2733 } 2734 2735 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2736 unittest(0, "could not find unittest0 @ \"%s\"\n", 2737 unittest_path(100, PDEV_OVERLAY)); 2738 goto out; 2739 } 2740 2741 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2742 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2743 unittest_path(101, PDEV_OVERLAY)); 2744 goto out; 2745 } 2746 2747 unittest(1, "basic infrastructure of overlays passed"); 2748 2749 /* tests in sequence */ 2750 of_unittest_overlay_0(); 2751 of_unittest_overlay_1(); 2752 of_unittest_overlay_2(); 2753 of_unittest_overlay_3(); 2754 of_unittest_overlay_4(); 2755 of_unittest_overlay_5(); 2756 of_unittest_overlay_6(); 2757 of_unittest_overlay_8(); 2758 2759 of_unittest_overlay_10(); 2760 of_unittest_overlay_11(); 2761 2762 #if IS_BUILTIN(CONFIG_I2C) 2763 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2764 goto out; 2765 2766 of_unittest_overlay_i2c_12(); 2767 of_unittest_overlay_i2c_13(); 2768 of_unittest_overlay_i2c_14(); 2769 of_unittest_overlay_i2c_15(); 2770 2771 of_unittest_overlay_i2c_cleanup(); 2772 #endif 2773 2774 of_unittest_overlay_gpio(); 2775 2776 of_unittest_destroy_tracked_overlays(); 2777 2778 out: 2779 of_node_put(bus_np); 2780 } 2781 2782 #else 2783 static inline void __init of_unittest_overlay(void) { } 2784 #endif 2785 2786 #ifdef CONFIG_OF_OVERLAY 2787 2788 /* 2789 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2790 * in scripts/Makefile.lib 2791 */ 2792 2793 #define OVERLAY_INFO_EXTERN(name) \ 2794 extern uint8_t __dtb_##name##_begin[]; \ 2795 extern uint8_t __dtb_##name##_end[] 2796 2797 #define OVERLAY_INFO(overlay_name, expected) \ 2798 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2799 .dtb_end = __dtb_##overlay_name##_end, \ 2800 .expected_result = expected, \ 2801 .name = #overlay_name, \ 2802 } 2803 2804 struct overlay_info { 2805 uint8_t *dtb_begin; 2806 uint8_t *dtb_end; 2807 int expected_result; 2808 int overlay_id; 2809 char *name; 2810 }; 2811 2812 OVERLAY_INFO_EXTERN(overlay_base); 2813 OVERLAY_INFO_EXTERN(overlay); 2814 OVERLAY_INFO_EXTERN(overlay_0); 2815 OVERLAY_INFO_EXTERN(overlay_1); 2816 OVERLAY_INFO_EXTERN(overlay_2); 2817 OVERLAY_INFO_EXTERN(overlay_3); 2818 OVERLAY_INFO_EXTERN(overlay_4); 2819 OVERLAY_INFO_EXTERN(overlay_5); 2820 OVERLAY_INFO_EXTERN(overlay_6); 2821 OVERLAY_INFO_EXTERN(overlay_7); 2822 OVERLAY_INFO_EXTERN(overlay_8); 2823 OVERLAY_INFO_EXTERN(overlay_9); 2824 OVERLAY_INFO_EXTERN(overlay_10); 2825 OVERLAY_INFO_EXTERN(overlay_11); 2826 OVERLAY_INFO_EXTERN(overlay_12); 2827 OVERLAY_INFO_EXTERN(overlay_13); 2828 OVERLAY_INFO_EXTERN(overlay_15); 2829 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2830 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2831 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2832 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2833 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2834 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2835 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2836 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2837 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2838 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2839 2840 /* entries found by name */ 2841 static struct overlay_info overlays[] = { 2842 OVERLAY_INFO(overlay_base, -9999), 2843 OVERLAY_INFO(overlay, 0), 2844 OVERLAY_INFO(overlay_0, 0), 2845 OVERLAY_INFO(overlay_1, 0), 2846 OVERLAY_INFO(overlay_2, 0), 2847 OVERLAY_INFO(overlay_3, 0), 2848 OVERLAY_INFO(overlay_4, 0), 2849 OVERLAY_INFO(overlay_5, 0), 2850 OVERLAY_INFO(overlay_6, 0), 2851 OVERLAY_INFO(overlay_7, 0), 2852 OVERLAY_INFO(overlay_8, 0), 2853 OVERLAY_INFO(overlay_9, 0), 2854 OVERLAY_INFO(overlay_10, 0), 2855 OVERLAY_INFO(overlay_11, 0), 2856 OVERLAY_INFO(overlay_12, 0), 2857 OVERLAY_INFO(overlay_13, 0), 2858 OVERLAY_INFO(overlay_15, 0), 2859 OVERLAY_INFO(overlay_gpio_01, 0), 2860 OVERLAY_INFO(overlay_gpio_02a, 0), 2861 OVERLAY_INFO(overlay_gpio_02b, 0), 2862 OVERLAY_INFO(overlay_gpio_03, 0), 2863 OVERLAY_INFO(overlay_gpio_04a, 0), 2864 OVERLAY_INFO(overlay_gpio_04b, 0), 2865 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2866 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2867 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2868 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2869 /* end marker */ 2870 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2871 }; 2872 2873 static struct device_node *overlay_base_root; 2874 2875 static void * __init dt_alloc_memory(u64 size, u64 align) 2876 { 2877 void *ptr = memblock_alloc(size, align); 2878 2879 if (!ptr) 2880 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2881 __func__, size, align); 2882 2883 return ptr; 2884 } 2885 2886 /* 2887 * Create base device tree for the overlay unittest. 2888 * 2889 * This is called from very early boot code. 2890 * 2891 * Do as much as possible the same way as done in __unflatten_device_tree 2892 * and other early boot steps for the normal FDT so that the overlay base 2893 * unflattened tree will have the same characteristics as the real tree 2894 * (such as having memory allocated by the early allocator). The goal 2895 * is to test "the real thing" as much as possible, and test "test setup 2896 * code" as little as possible. 2897 * 2898 * Have to stop before resolving phandles, because that uses kmalloc. 2899 */ 2900 void __init unittest_unflatten_overlay_base(void) 2901 { 2902 struct overlay_info *info; 2903 u32 data_size; 2904 void *new_fdt; 2905 u32 size; 2906 int found = 0; 2907 const char *overlay_name = "overlay_base"; 2908 2909 for (info = overlays; info && info->name; info++) { 2910 if (!strcmp(overlay_name, info->name)) { 2911 found = 1; 2912 break; 2913 } 2914 } 2915 if (!found) { 2916 pr_err("no overlay data for %s\n", overlay_name); 2917 return; 2918 } 2919 2920 info = &overlays[0]; 2921 2922 if (info->expected_result != -9999) { 2923 pr_err("No dtb 'overlay_base' to attach\n"); 2924 return; 2925 } 2926 2927 data_size = info->dtb_end - info->dtb_begin; 2928 if (!data_size) { 2929 pr_err("No dtb 'overlay_base' to attach\n"); 2930 return; 2931 } 2932 2933 size = fdt_totalsize(info->dtb_begin); 2934 if (size != data_size) { 2935 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2936 return; 2937 } 2938 2939 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2940 if (!new_fdt) { 2941 pr_err("alloc for dtb 'overlay_base' failed"); 2942 return; 2943 } 2944 2945 memcpy(new_fdt, info->dtb_begin, size); 2946 2947 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2948 dt_alloc_memory, true); 2949 } 2950 2951 /* 2952 * The purpose of of_unittest_overlay_data_add is to add an 2953 * overlay in the normal fashion. This is a test of the whole 2954 * picture, instead of testing individual elements. 2955 * 2956 * A secondary purpose is to be able to verify that the contents of 2957 * /proc/device-tree/ contains the updated structure and values from 2958 * the overlay. That must be verified separately in user space. 2959 * 2960 * Return 0 on unexpected error. 2961 */ 2962 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 2963 { 2964 struct overlay_info *info; 2965 int found = 0; 2966 int ret; 2967 u32 size; 2968 2969 for (info = overlays; info && info->name; info++) { 2970 if (!strcmp(overlay_name, info->name)) { 2971 found = 1; 2972 break; 2973 } 2974 } 2975 if (!found) { 2976 pr_err("no overlay data for %s\n", overlay_name); 2977 return 0; 2978 } 2979 2980 size = info->dtb_end - info->dtb_begin; 2981 if (!size) 2982 pr_err("no overlay data for %s\n", overlay_name); 2983 2984 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 2985 if (overlay_id) 2986 *overlay_id = info->overlay_id; 2987 if (ret < 0) 2988 goto out; 2989 2990 pr_debug("%s applied\n", overlay_name); 2991 2992 out: 2993 if (ret != info->expected_result) 2994 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 2995 info->expected_result, ret, overlay_name); 2996 2997 return (ret == info->expected_result); 2998 } 2999 3000 /* 3001 * The purpose of of_unittest_overlay_high_level is to add an overlay 3002 * in the normal fashion. This is a test of the whole picture, 3003 * instead of individual elements. 3004 * 3005 * The first part of the function is _not_ normal overlay usage; it is 3006 * finishing splicing the base overlay device tree into the live tree. 3007 */ 3008 static __init void of_unittest_overlay_high_level(void) 3009 { 3010 struct device_node *last_sibling; 3011 struct device_node *np; 3012 struct device_node *of_symbols; 3013 struct device_node *overlay_base_symbols; 3014 struct device_node **pprev; 3015 struct property *prop; 3016 int ret; 3017 3018 if (!overlay_base_root) { 3019 unittest(0, "overlay_base_root not initialized\n"); 3020 return; 3021 } 3022 3023 /* 3024 * Could not fixup phandles in unittest_unflatten_overlay_base() 3025 * because kmalloc() was not yet available. 3026 */ 3027 of_overlay_mutex_lock(); 3028 of_resolve_phandles(overlay_base_root); 3029 of_overlay_mutex_unlock(); 3030 3031 3032 /* 3033 * do not allow overlay_base to duplicate any node already in 3034 * tree, this greatly simplifies the code 3035 */ 3036 3037 /* 3038 * remove overlay_base_root node "__local_fixups", after 3039 * being used by of_resolve_phandles() 3040 */ 3041 pprev = &overlay_base_root->child; 3042 for (np = overlay_base_root->child; np; np = np->sibling) { 3043 if (of_node_name_eq(np, "__local_fixups__")) { 3044 *pprev = np->sibling; 3045 break; 3046 } 3047 pprev = &np->sibling; 3048 } 3049 3050 /* remove overlay_base_root node "__symbols__" if in live tree */ 3051 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3052 if (of_symbols) { 3053 /* will have to graft properties from node into live tree */ 3054 pprev = &overlay_base_root->child; 3055 for (np = overlay_base_root->child; np; np = np->sibling) { 3056 if (of_node_name_eq(np, "__symbols__")) { 3057 overlay_base_symbols = np; 3058 *pprev = np->sibling; 3059 break; 3060 } 3061 pprev = &np->sibling; 3062 } 3063 } 3064 3065 for_each_child_of_node(overlay_base_root, np) { 3066 struct device_node *base_child; 3067 for_each_child_of_node(of_root, base_child) { 3068 if (!strcmp(np->full_name, base_child->full_name)) { 3069 unittest(0, "illegal node name in overlay_base %pOFn", 3070 np); 3071 return; 3072 } 3073 } 3074 } 3075 3076 /* 3077 * overlay 'overlay_base' is not allowed to have root 3078 * properties, so only need to splice nodes into main device tree. 3079 * 3080 * root node of *overlay_base_root will not be freed, it is lost 3081 * memory. 3082 */ 3083 3084 for (np = overlay_base_root->child; np; np = np->sibling) 3085 np->parent = of_root; 3086 3087 mutex_lock(&of_mutex); 3088 3089 for (last_sibling = np = of_root->child; np; np = np->sibling) 3090 last_sibling = np; 3091 3092 if (last_sibling) 3093 last_sibling->sibling = overlay_base_root->child; 3094 else 3095 of_root->child = overlay_base_root->child; 3096 3097 for_each_of_allnodes_from(overlay_base_root, np) 3098 __of_attach_node_sysfs(np); 3099 3100 if (of_symbols) { 3101 struct property *new_prop; 3102 for_each_property_of_node(overlay_base_symbols, prop) { 3103 3104 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3105 if (!new_prop) { 3106 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3107 prop->name); 3108 goto err_unlock; 3109 } 3110 if (__of_add_property(of_symbols, new_prop)) { 3111 kfree(new_prop->name); 3112 kfree(new_prop->value); 3113 kfree(new_prop); 3114 /* "name" auto-generated by unflatten */ 3115 if (!strcmp(prop->name, "name")) 3116 continue; 3117 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3118 prop->name); 3119 goto err_unlock; 3120 } 3121 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3122 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3123 prop->name); 3124 goto err_unlock; 3125 } 3126 } 3127 } 3128 3129 mutex_unlock(&of_mutex); 3130 3131 3132 /* now do the normal overlay usage test */ 3133 3134 EXPECT_BEGIN(KERN_ERR, 3135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3136 EXPECT_BEGIN(KERN_ERR, 3137 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3138 EXPECT_BEGIN(KERN_ERR, 3139 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3140 EXPECT_BEGIN(KERN_ERR, 3141 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3142 EXPECT_BEGIN(KERN_ERR, 3143 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3144 EXPECT_BEGIN(KERN_ERR, 3145 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3146 EXPECT_BEGIN(KERN_ERR, 3147 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3148 EXPECT_BEGIN(KERN_ERR, 3149 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3150 EXPECT_BEGIN(KERN_ERR, 3151 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3152 EXPECT_BEGIN(KERN_ERR, 3153 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3154 EXPECT_BEGIN(KERN_ERR, 3155 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3156 3157 ret = overlay_data_apply("overlay", NULL); 3158 3159 EXPECT_END(KERN_ERR, 3160 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3161 EXPECT_END(KERN_ERR, 3162 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3163 EXPECT_END(KERN_ERR, 3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3165 EXPECT_END(KERN_ERR, 3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3167 EXPECT_END(KERN_ERR, 3168 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3169 EXPECT_END(KERN_ERR, 3170 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3171 EXPECT_END(KERN_ERR, 3172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3173 EXPECT_END(KERN_ERR, 3174 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3175 EXPECT_END(KERN_ERR, 3176 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3177 EXPECT_END(KERN_ERR, 3178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3179 EXPECT_END(KERN_ERR, 3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3181 3182 unittest(ret, "Adding overlay 'overlay' failed\n"); 3183 3184 EXPECT_BEGIN(KERN_ERR, 3185 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3186 EXPECT_BEGIN(KERN_ERR, 3187 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3188 3189 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3190 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3191 3192 EXPECT_END(KERN_ERR, 3193 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3194 EXPECT_END(KERN_ERR, 3195 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3196 3197 EXPECT_BEGIN(KERN_ERR, 3198 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3199 EXPECT_BEGIN(KERN_ERR, 3200 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3201 EXPECT_BEGIN(KERN_ERR, 3202 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3203 3204 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3205 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3206 3207 EXPECT_END(KERN_ERR, 3208 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3209 EXPECT_END(KERN_ERR, 3210 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3211 EXPECT_END(KERN_ERR, 3212 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3213 3214 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3215 "Adding overlay 'overlay_bad_phandle' failed\n"); 3216 3217 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3218 "Adding overlay 'overlay_bad_symbol' failed\n"); 3219 3220 return; 3221 3222 err_unlock: 3223 mutex_unlock(&of_mutex); 3224 } 3225 3226 #else 3227 3228 static inline __init void of_unittest_overlay_high_level(void) {} 3229 3230 #endif 3231 3232 static int __init of_unittest(void) 3233 { 3234 struct device_node *np; 3235 int res; 3236 3237 pr_info("start of unittest - you will see error messages\n"); 3238 3239 /* adding data for unittest */ 3240 3241 if (IS_ENABLED(CONFIG_UML)) 3242 unittest_unflatten_overlay_base(); 3243 3244 res = unittest_data_add(); 3245 if (res) 3246 return res; 3247 if (!of_aliases) 3248 of_aliases = of_find_node_by_path("/aliases"); 3249 3250 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3251 if (!np) { 3252 pr_info("No testcase data in device tree; not running tests\n"); 3253 return 0; 3254 } 3255 of_node_put(np); 3256 3257 of_unittest_check_tree_linkage(); 3258 of_unittest_check_phandles(); 3259 of_unittest_find_node_by_name(); 3260 of_unittest_dynamic(); 3261 of_unittest_parse_phandle_with_args(); 3262 of_unittest_parse_phandle_with_args_map(); 3263 of_unittest_printf(); 3264 of_unittest_property_string(); 3265 of_unittest_property_copy(); 3266 of_unittest_changeset(); 3267 of_unittest_parse_interrupts(); 3268 of_unittest_parse_interrupts_extended(); 3269 of_unittest_parse_dma_ranges(); 3270 of_unittest_pci_dma_ranges(); 3271 of_unittest_match_node(); 3272 of_unittest_platform_populate(); 3273 of_unittest_overlay(); 3274 3275 /* Double check linkage after removing testcase data */ 3276 of_unittest_check_tree_linkage(); 3277 3278 of_unittest_overlay_high_level(); 3279 3280 pr_info("end of unittest - %i passed, %i failed\n", 3281 unittest_results.passed, unittest_results.failed); 3282 3283 return 0; 3284 } 3285 late_initcall(of_unittest); 3286