1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Self tests for device tree subsystem 4 */ 5 6 #define pr_fmt(fmt) "### dt-test ### " fmt 7 8 #include <linux/memblock.h> 9 #include <linux/clk.h> 10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */ 11 #include <linux/err.h> 12 #include <linux/errno.h> 13 #include <linux/hashtable.h> 14 #include <linux/libfdt.h> 15 #include <linux/of.h> 16 #include <linux/of_address.h> 17 #include <linux/of_fdt.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <linux/list.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 #include <linux/kernel.h> 26 27 #include <linux/i2c.h> 28 #include <linux/i2c-mux.h> 29 #include <linux/gpio/driver.h> 30 31 #include <linux/bitops.h> 32 33 #include "of_private.h" 34 35 static struct unittest_results { 36 int passed; 37 int failed; 38 } unittest_results; 39 40 #define unittest(result, fmt, ...) ({ \ 41 bool failed = !(result); \ 42 if (failed) { \ 43 unittest_results.failed++; \ 44 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 45 } else { \ 46 unittest_results.passed++; \ 47 pr_debug("pass %s():%i\n", __func__, __LINE__); \ 48 } \ 49 failed; \ 50 }) 51 52 /* 53 * Expected message may have a message level other than KERN_INFO. 54 * Print the expected message only if the current loglevel will allow 55 * the actual message to print. 56 * 57 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by 58 * pr_debug(). 59 */ 60 #define EXPECT_BEGIN(level, fmt, ...) \ 61 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 62 63 #define EXPECT_END(level, fmt, ...) \ 64 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 65 66 static void __init of_unittest_find_node_by_name(void) 67 { 68 struct device_node *np; 69 const char *options, *name; 70 71 np = of_find_node_by_path("/testcase-data"); 72 name = kasprintf(GFP_KERNEL, "%pOF", np); 73 unittest(np && !strcmp("/testcase-data", name), 74 "find /testcase-data failed\n"); 75 of_node_put(np); 76 kfree(name); 77 78 /* Test if trailing '/' works */ 79 np = of_find_node_by_path("/testcase-data/"); 80 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 81 82 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 83 name = kasprintf(GFP_KERNEL, "%pOF", np); 84 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 85 "find /testcase-data/phandle-tests/consumer-a failed\n"); 86 of_node_put(np); 87 kfree(name); 88 89 np = of_find_node_by_path("testcase-alias"); 90 name = kasprintf(GFP_KERNEL, "%pOF", np); 91 unittest(np && !strcmp("/testcase-data", name), 92 "find testcase-alias failed\n"); 93 of_node_put(np); 94 kfree(name); 95 96 /* Test if trailing '/' works on aliases */ 97 np = of_find_node_by_path("testcase-alias/"); 98 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 99 100 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 101 name = kasprintf(GFP_KERNEL, "%pOF", np); 102 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 103 "find testcase-alias/phandle-tests/consumer-a failed\n"); 104 of_node_put(np); 105 kfree(name); 106 107 np = of_find_node_by_path("/testcase-data/missing-path"); 108 unittest(!np, "non-existent path returned node %pOF\n", np); 109 of_node_put(np); 110 111 np = of_find_node_by_path("missing-alias"); 112 unittest(!np, "non-existent alias returned node %pOF\n", np); 113 of_node_put(np); 114 115 np = of_find_node_by_path("testcase-alias/missing-path"); 116 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 117 of_node_put(np); 118 119 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 120 unittest(np && !strcmp("testoption", options), 121 "option path test failed\n"); 122 of_node_put(np); 123 124 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 125 unittest(np && !strcmp("test/option", options), 126 "option path test, subcase #1 failed\n"); 127 of_node_put(np); 128 129 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 130 unittest(np && !strcmp("test/option", options), 131 "option path test, subcase #2 failed\n"); 132 of_node_put(np); 133 134 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 135 unittest(np, "NULL option path test failed\n"); 136 of_node_put(np); 137 138 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 139 &options); 140 unittest(np && !strcmp("testaliasoption", options), 141 "option alias path test failed\n"); 142 of_node_put(np); 143 144 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 145 &options); 146 unittest(np && !strcmp("test/alias/option", options), 147 "option alias path test, subcase #1 failed\n"); 148 of_node_put(np); 149 150 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 151 unittest(np, "NULL option alias path test failed\n"); 152 of_node_put(np); 153 154 options = "testoption"; 155 np = of_find_node_opts_by_path("testcase-alias", &options); 156 unittest(np && !options, "option clearing test failed\n"); 157 of_node_put(np); 158 159 options = "testoption"; 160 np = of_find_node_opts_by_path("/", &options); 161 unittest(np && !options, "option clearing root node test failed\n"); 162 of_node_put(np); 163 } 164 165 static void __init of_unittest_dynamic(void) 166 { 167 struct device_node *np; 168 struct property *prop; 169 170 np = of_find_node_by_path("/testcase-data"); 171 if (!np) { 172 pr_err("missing testcase data\n"); 173 return; 174 } 175 176 /* Array of 4 properties for the purpose of testing */ 177 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 178 if (!prop) { 179 unittest(0, "kzalloc() failed\n"); 180 return; 181 } 182 183 /* Add a new property - should pass*/ 184 prop->name = "new-property"; 185 prop->value = "new-property-data"; 186 prop->length = strlen(prop->value) + 1; 187 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 188 189 /* Try to add an existing property - should fail */ 190 prop++; 191 prop->name = "new-property"; 192 prop->value = "new-property-data-should-fail"; 193 prop->length = strlen(prop->value) + 1; 194 unittest(of_add_property(np, prop) != 0, 195 "Adding an existing property should have failed\n"); 196 197 /* Try to modify an existing property - should pass */ 198 prop->value = "modify-property-data-should-pass"; 199 prop->length = strlen(prop->value) + 1; 200 unittest(of_update_property(np, prop) == 0, 201 "Updating an existing property should have passed\n"); 202 203 /* Try to modify non-existent property - should pass*/ 204 prop++; 205 prop->name = "modify-property"; 206 prop->value = "modify-missing-property-data-should-pass"; 207 prop->length = strlen(prop->value) + 1; 208 unittest(of_update_property(np, prop) == 0, 209 "Updating a missing property should have passed\n"); 210 211 /* Remove property - should pass */ 212 unittest(of_remove_property(np, prop) == 0, 213 "Removing a property should have passed\n"); 214 215 /* Adding very large property - should pass */ 216 prop++; 217 prop->name = "large-property-PAGE_SIZEx8"; 218 prop->length = PAGE_SIZE * 8; 219 prop->value = kzalloc(prop->length, GFP_KERNEL); 220 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 221 if (prop->value) 222 unittest(of_add_property(np, prop) == 0, 223 "Adding a large property should have passed\n"); 224 } 225 226 static int __init of_unittest_check_node_linkage(struct device_node *np) 227 { 228 struct device_node *child; 229 int count = 0, rc; 230 231 for_each_child_of_node(np, child) { 232 if (child->parent != np) { 233 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 234 child, np); 235 rc = -EINVAL; 236 goto put_child; 237 } 238 239 rc = of_unittest_check_node_linkage(child); 240 if (rc < 0) 241 goto put_child; 242 count += rc; 243 } 244 245 return count + 1; 246 put_child: 247 of_node_put(child); 248 return rc; 249 } 250 251 static void __init of_unittest_check_tree_linkage(void) 252 { 253 struct device_node *np; 254 int allnode_count = 0, child_count; 255 256 if (!of_root) 257 return; 258 259 for_each_of_allnodes(np) 260 allnode_count++; 261 child_count = of_unittest_check_node_linkage(of_root); 262 263 unittest(child_count > 0, "Device node data structure is corrupted\n"); 264 unittest(child_count == allnode_count, 265 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 266 allnode_count, child_count); 267 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 268 } 269 270 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 271 const char *expected) 272 { 273 unsigned char *buf; 274 int buf_size; 275 int size, i; 276 277 buf_size = strlen(expected) + 10; 278 buf = kmalloc(buf_size, GFP_KERNEL); 279 if (!buf) 280 return; 281 282 /* Baseline; check conversion with a large size limit */ 283 memset(buf, 0xff, buf_size); 284 size = snprintf(buf, buf_size - 2, fmt, np); 285 286 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 287 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 288 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 289 fmt, expected, buf); 290 291 /* Make sure length limits work */ 292 size++; 293 for (i = 0; i < 2; i++, size--) { 294 /* Clear the buffer, and make sure it works correctly still */ 295 memset(buf, 0xff, buf_size); 296 snprintf(buf, size+1, fmt, np); 297 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 298 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 299 size, fmt, expected, buf); 300 } 301 kfree(buf); 302 } 303 304 static void __init of_unittest_printf(void) 305 { 306 struct device_node *np; 307 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 308 char phandle_str[16] = ""; 309 310 np = of_find_node_by_path(full_name); 311 if (!np) { 312 unittest(np, "testcase data missing\n"); 313 return; 314 } 315 316 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 317 318 of_unittest_printf_one(np, "%pOF", full_name); 319 of_unittest_printf_one(np, "%pOFf", full_name); 320 of_unittest_printf_one(np, "%pOFn", "dev"); 321 of_unittest_printf_one(np, "%2pOFn", "dev"); 322 of_unittest_printf_one(np, "%5pOFn", " dev"); 323 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 324 of_unittest_printf_one(np, "%pOFp", phandle_str); 325 of_unittest_printf_one(np, "%pOFP", "dev@100"); 326 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 327 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 328 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 329 of_unittest_printf_one(of_root, "%pOFP", "/"); 330 of_unittest_printf_one(np, "%pOFF", "----"); 331 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 332 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 333 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 334 of_unittest_printf_one(np, "%pOFC", 335 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 336 } 337 338 struct node_hash { 339 struct hlist_node node; 340 struct device_node *np; 341 }; 342 343 static DEFINE_HASHTABLE(phandle_ht, 8); 344 static void __init of_unittest_check_phandles(void) 345 { 346 struct device_node *np; 347 struct node_hash *nh; 348 struct hlist_node *tmp; 349 int i, dup_count = 0, phandle_count = 0; 350 351 for_each_of_allnodes(np) { 352 if (!np->phandle) 353 continue; 354 355 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 356 if (nh->np->phandle == np->phandle) { 357 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 358 np->phandle, nh->np, np); 359 dup_count++; 360 break; 361 } 362 } 363 364 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 365 if (!nh) 366 return; 367 368 nh->np = np; 369 hash_add(phandle_ht, &nh->node, np->phandle); 370 phandle_count++; 371 } 372 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 373 dup_count, phandle_count); 374 375 /* Clean up */ 376 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 377 hash_del(&nh->node); 378 kfree(nh); 379 } 380 } 381 382 static void __init of_unittest_parse_phandle_with_args(void) 383 { 384 struct device_node *np; 385 struct of_phandle_args args; 386 int i, rc; 387 388 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 389 if (!np) { 390 pr_err("missing testcase data\n"); 391 return; 392 } 393 394 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 395 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 396 397 for (i = 0; i < 8; i++) { 398 bool passed = true; 399 400 memset(&args, 0, sizeof(args)); 401 rc = of_parse_phandle_with_args(np, "phandle-list", 402 "#phandle-cells", i, &args); 403 404 /* Test the values from tests-phandle.dtsi */ 405 switch (i) { 406 case 0: 407 passed &= !rc; 408 passed &= (args.args_count == 1); 409 passed &= (args.args[0] == (i + 1)); 410 break; 411 case 1: 412 passed &= !rc; 413 passed &= (args.args_count == 2); 414 passed &= (args.args[0] == (i + 1)); 415 passed &= (args.args[1] == 0); 416 break; 417 case 2: 418 passed &= (rc == -ENOENT); 419 break; 420 case 3: 421 passed &= !rc; 422 passed &= (args.args_count == 3); 423 passed &= (args.args[0] == (i + 1)); 424 passed &= (args.args[1] == 4); 425 passed &= (args.args[2] == 3); 426 break; 427 case 4: 428 passed &= !rc; 429 passed &= (args.args_count == 2); 430 passed &= (args.args[0] == (i + 1)); 431 passed &= (args.args[1] == 100); 432 break; 433 case 5: 434 passed &= !rc; 435 passed &= (args.args_count == 0); 436 break; 437 case 6: 438 passed &= !rc; 439 passed &= (args.args_count == 1); 440 passed &= (args.args[0] == (i + 1)); 441 break; 442 case 7: 443 passed &= (rc == -ENOENT); 444 break; 445 default: 446 passed = false; 447 } 448 449 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 450 i, args.np, rc); 451 } 452 453 /* Check for missing list property */ 454 memset(&args, 0, sizeof(args)); 455 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 456 "#phandle-cells", 0, &args); 457 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 458 rc = of_count_phandle_with_args(np, "phandle-list-missing", 459 "#phandle-cells"); 460 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 461 462 /* Check for missing cells property */ 463 memset(&args, 0, sizeof(args)); 464 465 EXPECT_BEGIN(KERN_INFO, 466 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 467 468 rc = of_parse_phandle_with_args(np, "phandle-list", 469 "#phandle-cells-missing", 0, &args); 470 471 EXPECT_END(KERN_INFO, 472 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 473 474 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 475 476 EXPECT_BEGIN(KERN_INFO, 477 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 478 479 rc = of_count_phandle_with_args(np, "phandle-list", 480 "#phandle-cells-missing"); 481 482 EXPECT_END(KERN_INFO, 483 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 484 485 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 486 487 /* Check for bad phandle in list */ 488 memset(&args, 0, sizeof(args)); 489 490 EXPECT_BEGIN(KERN_INFO, 491 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 492 493 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 494 "#phandle-cells", 0, &args); 495 496 EXPECT_END(KERN_INFO, 497 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 498 499 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 500 501 EXPECT_BEGIN(KERN_INFO, 502 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 503 504 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 505 "#phandle-cells"); 506 507 EXPECT_END(KERN_INFO, 508 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 509 510 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 511 512 /* Check for incorrectly formed argument list */ 513 memset(&args, 0, sizeof(args)); 514 515 EXPECT_BEGIN(KERN_INFO, 516 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 517 518 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 519 "#phandle-cells", 1, &args); 520 521 EXPECT_END(KERN_INFO, 522 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 523 524 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 525 526 EXPECT_BEGIN(KERN_INFO, 527 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 528 529 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 530 "#phandle-cells"); 531 532 EXPECT_END(KERN_INFO, 533 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 534 535 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 536 } 537 538 static void __init of_unittest_parse_phandle_with_args_map(void) 539 { 540 struct device_node *np, *p0, *p1, *p2, *p3; 541 struct of_phandle_args args; 542 int i, rc; 543 544 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 545 if (!np) { 546 pr_err("missing testcase data\n"); 547 return; 548 } 549 550 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 551 if (!p0) { 552 pr_err("missing testcase data\n"); 553 return; 554 } 555 556 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 557 if (!p1) { 558 pr_err("missing testcase data\n"); 559 return; 560 } 561 562 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 563 if (!p2) { 564 pr_err("missing testcase data\n"); 565 return; 566 } 567 568 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 569 if (!p3) { 570 pr_err("missing testcase data\n"); 571 return; 572 } 573 574 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 575 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 576 577 for (i = 0; i < 8; i++) { 578 bool passed = true; 579 580 memset(&args, 0, sizeof(args)); 581 rc = of_parse_phandle_with_args_map(np, "phandle-list", 582 "phandle", i, &args); 583 584 /* Test the values from tests-phandle.dtsi */ 585 switch (i) { 586 case 0: 587 passed &= !rc; 588 passed &= (args.np == p1); 589 passed &= (args.args_count == 1); 590 passed &= (args.args[0] == 1); 591 break; 592 case 1: 593 passed &= !rc; 594 passed &= (args.np == p3); 595 passed &= (args.args_count == 3); 596 passed &= (args.args[0] == 2); 597 passed &= (args.args[1] == 5); 598 passed &= (args.args[2] == 3); 599 break; 600 case 2: 601 passed &= (rc == -ENOENT); 602 break; 603 case 3: 604 passed &= !rc; 605 passed &= (args.np == p0); 606 passed &= (args.args_count == 0); 607 break; 608 case 4: 609 passed &= !rc; 610 passed &= (args.np == p1); 611 passed &= (args.args_count == 1); 612 passed &= (args.args[0] == 3); 613 break; 614 case 5: 615 passed &= !rc; 616 passed &= (args.np == p0); 617 passed &= (args.args_count == 0); 618 break; 619 case 6: 620 passed &= !rc; 621 passed &= (args.np == p2); 622 passed &= (args.args_count == 2); 623 passed &= (args.args[0] == 15); 624 passed &= (args.args[1] == 0x20); 625 break; 626 case 7: 627 passed &= (rc == -ENOENT); 628 break; 629 default: 630 passed = false; 631 } 632 633 unittest(passed, "index %i - data error on node %s rc=%i\n", 634 i, args.np->full_name, rc); 635 } 636 637 /* Check for missing list property */ 638 memset(&args, 0, sizeof(args)); 639 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 640 "phandle", 0, &args); 641 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 642 643 /* Check for missing cells,map,mask property */ 644 memset(&args, 0, sizeof(args)); 645 646 EXPECT_BEGIN(KERN_INFO, 647 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 648 649 rc = of_parse_phandle_with_args_map(np, "phandle-list", 650 "phandle-missing", 0, &args); 651 EXPECT_END(KERN_INFO, 652 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 653 654 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 655 656 /* Check for bad phandle in list */ 657 memset(&args, 0, sizeof(args)); 658 659 EXPECT_BEGIN(KERN_INFO, 660 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 661 662 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 663 "phandle", 0, &args); 664 EXPECT_END(KERN_INFO, 665 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 666 667 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 668 669 /* Check for incorrectly formed argument list */ 670 memset(&args, 0, sizeof(args)); 671 672 EXPECT_BEGIN(KERN_INFO, 673 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 674 675 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 676 "phandle", 1, &args); 677 EXPECT_END(KERN_INFO, 678 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 679 680 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 681 } 682 683 static void __init of_unittest_property_string(void) 684 { 685 const char *strings[4]; 686 struct device_node *np; 687 int rc; 688 689 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 690 if (!np) { 691 pr_err("No testcase data in device tree\n"); 692 return; 693 } 694 695 rc = of_property_match_string(np, "phandle-list-names", "first"); 696 unittest(rc == 0, "first expected:0 got:%i\n", rc); 697 rc = of_property_match_string(np, "phandle-list-names", "second"); 698 unittest(rc == 1, "second expected:1 got:%i\n", rc); 699 rc = of_property_match_string(np, "phandle-list-names", "third"); 700 unittest(rc == 2, "third expected:2 got:%i\n", rc); 701 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 702 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 703 rc = of_property_match_string(np, "missing-property", "blah"); 704 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 705 rc = of_property_match_string(np, "empty-property", "blah"); 706 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 707 rc = of_property_match_string(np, "unterminated-string", "blah"); 708 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 709 710 /* of_property_count_strings() tests */ 711 rc = of_property_count_strings(np, "string-property"); 712 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 713 rc = of_property_count_strings(np, "phandle-list-names"); 714 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 715 rc = of_property_count_strings(np, "unterminated-string"); 716 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 717 rc = of_property_count_strings(np, "unterminated-string-list"); 718 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 719 720 /* of_property_read_string_index() tests */ 721 rc = of_property_read_string_index(np, "string-property", 0, strings); 722 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 723 strings[0] = NULL; 724 rc = of_property_read_string_index(np, "string-property", 1, strings); 725 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 726 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 727 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 728 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 729 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 730 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 731 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 732 strings[0] = NULL; 733 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 734 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 735 strings[0] = NULL; 736 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 737 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 738 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 739 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 740 strings[0] = NULL; 741 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 742 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 743 strings[1] = NULL; 744 745 /* of_property_read_string_array() tests */ 746 rc = of_property_read_string_array(np, "string-property", strings, 4); 747 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 748 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 749 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 750 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 751 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 752 /* -- An incorrectly formed string should cause a failure */ 753 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 754 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 755 /* -- parsing the correctly formed strings should still work: */ 756 strings[2] = NULL; 757 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 758 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 759 strings[1] = NULL; 760 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 761 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 762 } 763 764 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 765 (p1)->value && (p2)->value && \ 766 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 767 !strcmp((p1)->name, (p2)->name)) 768 static void __init of_unittest_property_copy(void) 769 { 770 #ifdef CONFIG_OF_DYNAMIC 771 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 772 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 773 struct property *new; 774 775 new = __of_prop_dup(&p1, GFP_KERNEL); 776 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 777 kfree(new->value); 778 kfree(new->name); 779 kfree(new); 780 781 new = __of_prop_dup(&p2, GFP_KERNEL); 782 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 783 kfree(new->value); 784 kfree(new->name); 785 kfree(new); 786 #endif 787 } 788 789 static void __init of_unittest_changeset(void) 790 { 791 #ifdef CONFIG_OF_DYNAMIC 792 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 793 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 794 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 795 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 796 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 797 struct property *ppremove; 798 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np; 799 struct of_changeset chgset; 800 801 n1 = __of_node_dup(NULL, "n1"); 802 unittest(n1, "testcase setup failure\n"); 803 804 n2 = __of_node_dup(NULL, "n2"); 805 unittest(n2, "testcase setup failure\n"); 806 807 n21 = __of_node_dup(NULL, "n21"); 808 unittest(n21, "testcase setup failure %p\n", n21); 809 810 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 811 nremove = of_get_child_by_name(nchangeset, "node-remove"); 812 unittest(nremove, "testcase setup failure\n"); 813 814 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 815 unittest(ppadd, "testcase setup failure\n"); 816 817 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 818 unittest(ppname_n1, "testcase setup failure\n"); 819 820 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 821 unittest(ppname_n2, "testcase setup failure\n"); 822 823 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 824 unittest(ppname_n21, "testcase setup failure\n"); 825 826 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 827 unittest(ppupdate, "testcase setup failure\n"); 828 829 parent = nchangeset; 830 n1->parent = parent; 831 n2->parent = parent; 832 n21->parent = n2; 833 834 ppremove = of_find_property(parent, "prop-remove", NULL); 835 unittest(ppremove, "failed to find removal prop"); 836 837 of_changeset_init(&chgset); 838 839 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 840 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 841 842 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 843 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 844 845 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 846 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 847 848 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 849 850 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 851 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 852 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 853 854 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 855 856 of_node_put(nchangeset); 857 858 /* Make sure node names are constructed correctly */ 859 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 860 "'%pOF' not added\n", n21); 861 of_node_put(np); 862 863 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 864 865 of_changeset_destroy(&chgset); 866 867 of_node_put(n1); 868 of_node_put(n2); 869 of_node_put(n21); 870 #endif 871 } 872 873 static void __init of_unittest_dma_get_max_cpu_address(void) 874 { 875 struct device_node *np; 876 phys_addr_t cpu_addr; 877 878 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 879 return; 880 881 np = of_find_node_by_path("/testcase-data/address-tests"); 882 if (!np) { 883 pr_err("missing testcase data\n"); 884 return; 885 } 886 887 cpu_addr = of_dma_get_max_cpu_address(np); 888 unittest(cpu_addr == 0x4fffffff, 889 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n", 890 &cpu_addr, 0x4fffffff); 891 } 892 893 static void __init of_unittest_dma_ranges_one(const char *path, 894 u64 expect_dma_addr, u64 expect_paddr) 895 { 896 #ifdef CONFIG_HAS_DMA 897 struct device_node *np; 898 const struct bus_dma_region *map = NULL; 899 int rc; 900 901 np = of_find_node_by_path(path); 902 if (!np) { 903 pr_err("missing testcase data\n"); 904 return; 905 } 906 907 rc = of_dma_get_range(np, &map); 908 909 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 910 911 if (!rc) { 912 phys_addr_t paddr; 913 dma_addr_t dma_addr; 914 struct device *dev_bogus; 915 916 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL); 917 if (!dev_bogus) { 918 unittest(0, "kzalloc() failed\n"); 919 kfree(map); 920 return; 921 } 922 923 dev_bogus->dma_range_map = map; 924 paddr = dma_to_phys(dev_bogus, expect_dma_addr); 925 dma_addr = phys_to_dma(dev_bogus, expect_paddr); 926 927 unittest(paddr == expect_paddr, 928 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 929 &paddr, expect_paddr, np); 930 unittest(dma_addr == expect_dma_addr, 931 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 932 &dma_addr, expect_dma_addr, np); 933 934 kfree(map); 935 kfree(dev_bogus); 936 } 937 of_node_put(np); 938 #endif 939 } 940 941 static void __init of_unittest_parse_dma_ranges(void) 942 { 943 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 944 0x0, 0x20000000); 945 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)) 946 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 947 0x100000000, 0x20000000); 948 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 949 0x80000000, 0x20000000); 950 } 951 952 static void __init of_unittest_pci_dma_ranges(void) 953 { 954 struct device_node *np; 955 struct of_pci_range range; 956 struct of_pci_range_parser parser; 957 int i = 0; 958 959 if (!IS_ENABLED(CONFIG_PCI)) 960 return; 961 962 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 963 if (!np) { 964 pr_err("missing testcase data\n"); 965 return; 966 } 967 968 if (of_pci_dma_range_parser_init(&parser, np)) { 969 pr_err("missing dma-ranges property\n"); 970 return; 971 } 972 973 /* 974 * Get the dma-ranges from the device tree 975 */ 976 for_each_of_pci_range(&parser, &range) { 977 if (!i) { 978 unittest(range.size == 0x10000000, 979 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 980 np, range.size); 981 unittest(range.cpu_addr == 0x20000000, 982 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 983 range.cpu_addr, np); 984 unittest(range.pci_addr == 0x80000000, 985 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 986 range.pci_addr, np); 987 } else { 988 unittest(range.size == 0x10000000, 989 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 990 np, range.size); 991 unittest(range.cpu_addr == 0x40000000, 992 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 993 range.cpu_addr, np); 994 unittest(range.pci_addr == 0xc0000000, 995 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 996 range.pci_addr, np); 997 } 998 i++; 999 } 1000 1001 of_node_put(np); 1002 } 1003 1004 static void __init of_unittest_parse_interrupts(void) 1005 { 1006 struct device_node *np; 1007 struct of_phandle_args args; 1008 int i, rc; 1009 1010 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1011 return; 1012 1013 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 1014 if (!np) { 1015 pr_err("missing testcase data\n"); 1016 return; 1017 } 1018 1019 for (i = 0; i < 4; i++) { 1020 bool passed = true; 1021 1022 memset(&args, 0, sizeof(args)); 1023 rc = of_irq_parse_one(np, i, &args); 1024 1025 passed &= !rc; 1026 passed &= (args.args_count == 1); 1027 passed &= (args.args[0] == (i + 1)); 1028 1029 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1030 i, args.np, rc); 1031 } 1032 of_node_put(np); 1033 1034 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 1035 if (!np) { 1036 pr_err("missing testcase data\n"); 1037 return; 1038 } 1039 1040 for (i = 0; i < 4; i++) { 1041 bool passed = true; 1042 1043 memset(&args, 0, sizeof(args)); 1044 rc = of_irq_parse_one(np, i, &args); 1045 1046 /* Test the values from tests-phandle.dtsi */ 1047 switch (i) { 1048 case 0: 1049 passed &= !rc; 1050 passed &= (args.args_count == 1); 1051 passed &= (args.args[0] == 9); 1052 break; 1053 case 1: 1054 passed &= !rc; 1055 passed &= (args.args_count == 3); 1056 passed &= (args.args[0] == 10); 1057 passed &= (args.args[1] == 11); 1058 passed &= (args.args[2] == 12); 1059 break; 1060 case 2: 1061 passed &= !rc; 1062 passed &= (args.args_count == 2); 1063 passed &= (args.args[0] == 13); 1064 passed &= (args.args[1] == 14); 1065 break; 1066 case 3: 1067 passed &= !rc; 1068 passed &= (args.args_count == 2); 1069 passed &= (args.args[0] == 15); 1070 passed &= (args.args[1] == 16); 1071 break; 1072 default: 1073 passed = false; 1074 } 1075 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1076 i, args.np, rc); 1077 } 1078 of_node_put(np); 1079 } 1080 1081 static void __init of_unittest_parse_interrupts_extended(void) 1082 { 1083 struct device_node *np; 1084 struct of_phandle_args args; 1085 int i, rc; 1086 1087 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1088 return; 1089 1090 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1091 if (!np) { 1092 pr_err("missing testcase data\n"); 1093 return; 1094 } 1095 1096 for (i = 0; i < 7; i++) { 1097 bool passed = true; 1098 1099 memset(&args, 0, sizeof(args)); 1100 rc = of_irq_parse_one(np, i, &args); 1101 1102 /* Test the values from tests-phandle.dtsi */ 1103 switch (i) { 1104 case 0: 1105 passed &= !rc; 1106 passed &= (args.args_count == 1); 1107 passed &= (args.args[0] == 1); 1108 break; 1109 case 1: 1110 passed &= !rc; 1111 passed &= (args.args_count == 3); 1112 passed &= (args.args[0] == 2); 1113 passed &= (args.args[1] == 3); 1114 passed &= (args.args[2] == 4); 1115 break; 1116 case 2: 1117 passed &= !rc; 1118 passed &= (args.args_count == 2); 1119 passed &= (args.args[0] == 5); 1120 passed &= (args.args[1] == 6); 1121 break; 1122 case 3: 1123 passed &= !rc; 1124 passed &= (args.args_count == 1); 1125 passed &= (args.args[0] == 9); 1126 break; 1127 case 4: 1128 passed &= !rc; 1129 passed &= (args.args_count == 3); 1130 passed &= (args.args[0] == 10); 1131 passed &= (args.args[1] == 11); 1132 passed &= (args.args[2] == 12); 1133 break; 1134 case 5: 1135 passed &= !rc; 1136 passed &= (args.args_count == 2); 1137 passed &= (args.args[0] == 13); 1138 passed &= (args.args[1] == 14); 1139 break; 1140 case 6: 1141 /* 1142 * Tests child node that is missing property 1143 * #address-cells. See the comments in 1144 * drivers/of/unittest-data/tests-interrupts.dtsi 1145 * nodes intmap1 and interrupts-extended0 1146 */ 1147 passed &= !rc; 1148 passed &= (args.args_count == 1); 1149 passed &= (args.args[0] == 15); 1150 break; 1151 default: 1152 passed = false; 1153 } 1154 1155 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1156 i, args.np, rc); 1157 } 1158 of_node_put(np); 1159 } 1160 1161 static const struct of_device_id match_node_table[] = { 1162 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1163 { .data = "B", .type = "type1", }, /* followed by type alone */ 1164 1165 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1166 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1167 { .data = "Cc", .name = "name2", .type = "type2", }, 1168 1169 { .data = "E", .compatible = "compat3" }, 1170 { .data = "G", .compatible = "compat2", }, 1171 { .data = "H", .compatible = "compat2", .name = "name5", }, 1172 { .data = "I", .compatible = "compat2", .type = "type1", }, 1173 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1174 { .data = "K", .compatible = "compat2", .name = "name9", }, 1175 {} 1176 }; 1177 1178 static struct { 1179 const char *path; 1180 const char *data; 1181 } match_node_tests[] = { 1182 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1183 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1184 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1185 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1186 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1187 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1188 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1189 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1190 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1191 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1192 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1193 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1194 }; 1195 1196 static void __init of_unittest_match_node(void) 1197 { 1198 struct device_node *np; 1199 const struct of_device_id *match; 1200 int i; 1201 1202 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1203 np = of_find_node_by_path(match_node_tests[i].path); 1204 if (!np) { 1205 unittest(0, "missing testcase node %s\n", 1206 match_node_tests[i].path); 1207 continue; 1208 } 1209 1210 match = of_match_node(match_node_table, np); 1211 if (!match) { 1212 unittest(0, "%s didn't match anything\n", 1213 match_node_tests[i].path); 1214 continue; 1215 } 1216 1217 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1218 unittest(0, "%s got wrong match. expected %s, got %s\n", 1219 match_node_tests[i].path, match_node_tests[i].data, 1220 (const char *)match->data); 1221 continue; 1222 } 1223 unittest(1, "passed"); 1224 } 1225 } 1226 1227 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2); 1228 static const struct platform_device_info test_bus_info = { 1229 .name = "unittest-bus", 1230 }; 1231 static void __init of_unittest_platform_populate(void) 1232 { 1233 int irq, rc; 1234 struct device_node *np, *child, *grandchild; 1235 struct platform_device *pdev, *test_bus; 1236 const struct of_device_id match[] = { 1237 { .compatible = "test-device", }, 1238 {} 1239 }; 1240 1241 np = of_find_node_by_path("/testcase-data"); 1242 of_platform_default_populate(np, NULL, NULL); 1243 1244 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1245 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1246 pdev = of_find_device_by_node(np); 1247 unittest(pdev, "device 1 creation failed\n"); 1248 1249 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1250 irq = platform_get_irq(pdev, 0); 1251 unittest(irq == -EPROBE_DEFER, 1252 "device deferred probe failed - %d\n", irq); 1253 1254 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1255 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1256 pdev = of_find_device_by_node(np); 1257 unittest(pdev, "device 2 creation failed\n"); 1258 1259 EXPECT_BEGIN(KERN_INFO, 1260 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1261 1262 irq = platform_get_irq(pdev, 0); 1263 1264 EXPECT_END(KERN_INFO, 1265 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1266 1267 unittest(irq < 0 && irq != -EPROBE_DEFER, 1268 "device parsing error failed - %d\n", irq); 1269 } 1270 1271 np = of_find_node_by_path("/testcase-data/platform-tests"); 1272 unittest(np, "No testcase data in device tree\n"); 1273 if (!np) 1274 return; 1275 1276 test_bus = platform_device_register_full(&test_bus_info); 1277 rc = PTR_ERR_OR_ZERO(test_bus); 1278 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1279 if (rc) { 1280 of_node_put(np); 1281 return; 1282 } 1283 test_bus->dev.of_node = np; 1284 1285 /* 1286 * Add a dummy resource to the test bus node after it is 1287 * registered to catch problems with un-inserted resources. The 1288 * DT code doesn't insert the resources, and it has caused the 1289 * kernel to oops in the past. This makes sure the same bug 1290 * doesn't crop up again. 1291 */ 1292 platform_device_add_resources(test_bus, &test_bus_res, 1); 1293 1294 of_platform_populate(np, match, NULL, &test_bus->dev); 1295 for_each_child_of_node(np, child) { 1296 for_each_child_of_node(child, grandchild) { 1297 pdev = of_find_device_by_node(grandchild); 1298 unittest(pdev, 1299 "Could not create device for node '%pOFn'\n", 1300 grandchild); 1301 platform_device_put(pdev); 1302 } 1303 } 1304 1305 of_platform_depopulate(&test_bus->dev); 1306 for_each_child_of_node(np, child) { 1307 for_each_child_of_node(child, grandchild) 1308 unittest(!of_find_device_by_node(grandchild), 1309 "device didn't get destroyed '%pOFn'\n", 1310 grandchild); 1311 } 1312 1313 platform_device_unregister(test_bus); 1314 of_node_put(np); 1315 } 1316 1317 /** 1318 * update_node_properties - adds the properties 1319 * of np into dup node (present in live tree) and 1320 * updates parent of children of np to dup. 1321 * 1322 * @np: node whose properties are being added to the live tree 1323 * @dup: node present in live tree to be updated 1324 */ 1325 static void update_node_properties(struct device_node *np, 1326 struct device_node *dup) 1327 { 1328 struct property *prop; 1329 struct property *save_next; 1330 struct device_node *child; 1331 int ret; 1332 1333 for_each_child_of_node(np, child) 1334 child->parent = dup; 1335 1336 /* 1337 * "unittest internal error: unable to add testdata property" 1338 * 1339 * If this message reports a property in node '/__symbols__' then 1340 * the respective unittest overlay contains a label that has the 1341 * same name as a label in the live devicetree. The label will 1342 * be in the live devicetree only if the devicetree source was 1343 * compiled with the '-@' option. If you encounter this error, 1344 * please consider renaming __all__ of the labels in the unittest 1345 * overlay dts files with an odd prefix that is unlikely to be 1346 * used in a real devicetree. 1347 */ 1348 1349 /* 1350 * open code for_each_property_of_node() because of_add_property() 1351 * sets prop->next to NULL 1352 */ 1353 for (prop = np->properties; prop != NULL; prop = save_next) { 1354 save_next = prop->next; 1355 ret = of_add_property(dup, prop); 1356 if (ret) { 1357 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1358 continue; 1359 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1360 np, prop->name); 1361 } 1362 } 1363 } 1364 1365 /** 1366 * attach_node_and_children - attaches nodes 1367 * and its children to live tree. 1368 * CAUTION: misleading function name - if node @np already exists in 1369 * the live tree then children of @np are *not* attached to the live 1370 * tree. This works for the current test devicetree nodes because such 1371 * nodes do not have child nodes. 1372 * 1373 * @np: Node to attach to live tree 1374 */ 1375 static void attach_node_and_children(struct device_node *np) 1376 { 1377 struct device_node *next, *dup, *child; 1378 unsigned long flags; 1379 const char *full_name; 1380 1381 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1382 1383 if (!strcmp(full_name, "/__local_fixups__") || 1384 !strcmp(full_name, "/__fixups__")) { 1385 kfree(full_name); 1386 return; 1387 } 1388 1389 dup = of_find_node_by_path(full_name); 1390 kfree(full_name); 1391 if (dup) { 1392 update_node_properties(np, dup); 1393 return; 1394 } 1395 1396 child = np->child; 1397 np->child = NULL; 1398 1399 mutex_lock(&of_mutex); 1400 raw_spin_lock_irqsave(&devtree_lock, flags); 1401 np->sibling = np->parent->child; 1402 np->parent->child = np; 1403 of_node_clear_flag(np, OF_DETACHED); 1404 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1405 1406 __of_attach_node_sysfs(np); 1407 mutex_unlock(&of_mutex); 1408 1409 while (child) { 1410 next = child->sibling; 1411 attach_node_and_children(child); 1412 child = next; 1413 } 1414 } 1415 1416 /** 1417 * unittest_data_add - Reads, copies data from 1418 * linked tree and attaches it to the live tree 1419 */ 1420 static int __init unittest_data_add(void) 1421 { 1422 void *unittest_data; 1423 void *unittest_data_align; 1424 struct device_node *unittest_data_node = NULL, *np; 1425 /* 1426 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1427 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1428 */ 1429 extern uint8_t __dtb_testcases_begin[]; 1430 extern uint8_t __dtb_testcases_end[]; 1431 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1432 int rc; 1433 void *ret; 1434 1435 if (!size) { 1436 pr_warn("%s: testcases is empty\n", __func__); 1437 return -ENODATA; 1438 } 1439 1440 /* creating copy */ 1441 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL); 1442 if (!unittest_data) 1443 return -ENOMEM; 1444 1445 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE); 1446 memcpy(unittest_data_align, __dtb_testcases_begin, size); 1447 1448 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node); 1449 if (!ret) { 1450 pr_warn("%s: unflatten testcases tree failed\n", __func__); 1451 kfree(unittest_data); 1452 return -ENODATA; 1453 } 1454 if (!unittest_data_node) { 1455 pr_warn("%s: testcases tree is empty\n", __func__); 1456 kfree(unittest_data); 1457 return -ENODATA; 1458 } 1459 1460 /* 1461 * This lock normally encloses of_resolve_phandles() 1462 */ 1463 of_overlay_mutex_lock(); 1464 1465 rc = of_resolve_phandles(unittest_data_node); 1466 if (rc) { 1467 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1468 of_overlay_mutex_unlock(); 1469 return -EINVAL; 1470 } 1471 1472 if (!of_root) { 1473 of_root = unittest_data_node; 1474 for_each_of_allnodes(np) 1475 __of_attach_node_sysfs(np); 1476 of_aliases = of_find_node_by_path("/aliases"); 1477 of_chosen = of_find_node_by_path("/chosen"); 1478 of_overlay_mutex_unlock(); 1479 return 0; 1480 } 1481 1482 EXPECT_BEGIN(KERN_INFO, 1483 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1484 1485 /* attach the sub-tree to live tree */ 1486 np = unittest_data_node->child; 1487 while (np) { 1488 struct device_node *next = np->sibling; 1489 1490 np->parent = of_root; 1491 attach_node_and_children(np); 1492 np = next; 1493 } 1494 1495 EXPECT_END(KERN_INFO, 1496 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1497 1498 of_overlay_mutex_unlock(); 1499 1500 return 0; 1501 } 1502 1503 #ifdef CONFIG_OF_OVERLAY 1504 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1505 1506 static int unittest_probe(struct platform_device *pdev) 1507 { 1508 struct device *dev = &pdev->dev; 1509 struct device_node *np = dev->of_node; 1510 1511 if (np == NULL) { 1512 dev_err(dev, "No OF data for device\n"); 1513 return -EINVAL; 1514 1515 } 1516 1517 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1518 1519 of_platform_populate(np, NULL, NULL, &pdev->dev); 1520 1521 return 0; 1522 } 1523 1524 static int unittest_remove(struct platform_device *pdev) 1525 { 1526 struct device *dev = &pdev->dev; 1527 struct device_node *np = dev->of_node; 1528 1529 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1530 return 0; 1531 } 1532 1533 static const struct of_device_id unittest_match[] = { 1534 { .compatible = "unittest", }, 1535 {}, 1536 }; 1537 1538 static struct platform_driver unittest_driver = { 1539 .probe = unittest_probe, 1540 .remove = unittest_remove, 1541 .driver = { 1542 .name = "unittest", 1543 .of_match_table = of_match_ptr(unittest_match), 1544 }, 1545 }; 1546 1547 /* get the platform device instantiated at the path */ 1548 static struct platform_device *of_path_to_platform_device(const char *path) 1549 { 1550 struct device_node *np; 1551 struct platform_device *pdev; 1552 1553 np = of_find_node_by_path(path); 1554 if (np == NULL) 1555 return NULL; 1556 1557 pdev = of_find_device_by_node(np); 1558 of_node_put(np); 1559 1560 return pdev; 1561 } 1562 1563 /* find out if a platform device exists at that path */ 1564 static int of_path_platform_device_exists(const char *path) 1565 { 1566 struct platform_device *pdev; 1567 1568 pdev = of_path_to_platform_device(path); 1569 platform_device_put(pdev); 1570 return pdev != NULL; 1571 } 1572 1573 #ifdef CONFIG_OF_GPIO 1574 1575 struct unittest_gpio_dev { 1576 struct gpio_chip chip; 1577 }; 1578 1579 static int unittest_gpio_chip_request_count; 1580 static int unittest_gpio_probe_count; 1581 static int unittest_gpio_probe_pass_count; 1582 1583 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1584 { 1585 unittest_gpio_chip_request_count++; 1586 1587 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1588 unittest_gpio_chip_request_count); 1589 return 0; 1590 } 1591 1592 static int unittest_gpio_probe(struct platform_device *pdev) 1593 { 1594 struct unittest_gpio_dev *devptr; 1595 int ret; 1596 1597 unittest_gpio_probe_count++; 1598 1599 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1600 if (!devptr) 1601 return -ENOMEM; 1602 1603 platform_set_drvdata(pdev, devptr); 1604 1605 devptr->chip.of_node = pdev->dev.of_node; 1606 devptr->chip.label = "of-unittest-gpio"; 1607 devptr->chip.base = -1; /* dynamic allocation */ 1608 devptr->chip.ngpio = 5; 1609 devptr->chip.request = unittest_gpio_chip_request; 1610 1611 ret = gpiochip_add_data(&devptr->chip, NULL); 1612 1613 unittest(!ret, 1614 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1615 1616 if (!ret) 1617 unittest_gpio_probe_pass_count++; 1618 return ret; 1619 } 1620 1621 static int unittest_gpio_remove(struct platform_device *pdev) 1622 { 1623 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1624 struct device *dev = &pdev->dev; 1625 struct device_node *np = pdev->dev.of_node; 1626 1627 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1628 1629 if (!gdev) 1630 return -EINVAL; 1631 1632 if (gdev->chip.base != -1) 1633 gpiochip_remove(&gdev->chip); 1634 1635 platform_set_drvdata(pdev, NULL); 1636 kfree(gdev); 1637 1638 return 0; 1639 } 1640 1641 static const struct of_device_id unittest_gpio_id[] = { 1642 { .compatible = "unittest-gpio", }, 1643 {} 1644 }; 1645 1646 static struct platform_driver unittest_gpio_driver = { 1647 .probe = unittest_gpio_probe, 1648 .remove = unittest_gpio_remove, 1649 .driver = { 1650 .name = "unittest-gpio", 1651 .of_match_table = of_match_ptr(unittest_gpio_id), 1652 }, 1653 }; 1654 1655 static void __init of_unittest_overlay_gpio(void) 1656 { 1657 int chip_request_count; 1658 int probe_pass_count; 1659 int ret; 1660 1661 /* 1662 * tests: apply overlays before registering driver 1663 * Similar to installing a driver as a module, the 1664 * driver is registered after applying the overlays. 1665 * 1666 * The overlays are applied by overlay_data_apply() 1667 * instead of of_unittest_apply_overlay() so that they 1668 * will not be tracked. Thus they will not be removed 1669 * by of_unittest_destroy_tracked_overlays(). 1670 * 1671 * - apply overlay_gpio_01 1672 * - apply overlay_gpio_02a 1673 * - apply overlay_gpio_02b 1674 * - register driver 1675 * 1676 * register driver will result in 1677 * - probe and processing gpio hog for overlay_gpio_01 1678 * - probe for overlay_gpio_02a 1679 * - processing gpio for overlay_gpio_02b 1680 */ 1681 1682 probe_pass_count = unittest_gpio_probe_pass_count; 1683 chip_request_count = unittest_gpio_chip_request_count; 1684 1685 /* 1686 * overlay_gpio_01 contains gpio node and child gpio hog node 1687 * overlay_gpio_02a contains gpio node 1688 * overlay_gpio_02b contains child gpio hog node 1689 */ 1690 1691 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1692 "Adding overlay 'overlay_gpio_01' failed\n"); 1693 1694 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1695 "Adding overlay 'overlay_gpio_02a' failed\n"); 1696 1697 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1698 "Adding overlay 'overlay_gpio_02b' failed\n"); 1699 1700 /* 1701 * messages are the result of the probes, after the 1702 * driver is registered 1703 */ 1704 1705 EXPECT_BEGIN(KERN_INFO, 1706 "gpio-<<int>> (line-B-input): hogged as input\n"); 1707 1708 EXPECT_BEGIN(KERN_INFO, 1709 "gpio-<<int>> (line-A-input): hogged as input\n"); 1710 1711 ret = platform_driver_register(&unittest_gpio_driver); 1712 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1713 return; 1714 1715 EXPECT_END(KERN_INFO, 1716 "gpio-<<int>> (line-A-input): hogged as input\n"); 1717 EXPECT_END(KERN_INFO, 1718 "gpio-<<int>> (line-B-input): hogged as input\n"); 1719 1720 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1721 "unittest_gpio_probe() failed or not called\n"); 1722 1723 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1724 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1725 unittest_gpio_chip_request_count - chip_request_count); 1726 1727 /* 1728 * tests: apply overlays after registering driver 1729 * 1730 * Similar to a driver built-in to the kernel, the 1731 * driver is registered before applying the overlays. 1732 * 1733 * overlay_gpio_03 contains gpio node and child gpio hog node 1734 * 1735 * - apply overlay_gpio_03 1736 * 1737 * apply overlay will result in 1738 * - probe and processing gpio hog. 1739 */ 1740 1741 probe_pass_count = unittest_gpio_probe_pass_count; 1742 chip_request_count = unittest_gpio_chip_request_count; 1743 1744 EXPECT_BEGIN(KERN_INFO, 1745 "gpio-<<int>> (line-D-input): hogged as input\n"); 1746 1747 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1748 1749 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1750 "Adding overlay 'overlay_gpio_03' failed\n"); 1751 1752 EXPECT_END(KERN_INFO, 1753 "gpio-<<int>> (line-D-input): hogged as input\n"); 1754 1755 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1756 "unittest_gpio_probe() failed or not called\n"); 1757 1758 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1759 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1760 unittest_gpio_chip_request_count - chip_request_count); 1761 1762 /* 1763 * overlay_gpio_04a contains gpio node 1764 * 1765 * - apply overlay_gpio_04a 1766 * 1767 * apply the overlay will result in 1768 * - probe for overlay_gpio_04a 1769 */ 1770 1771 probe_pass_count = unittest_gpio_probe_pass_count; 1772 chip_request_count = unittest_gpio_chip_request_count; 1773 1774 /* overlay_gpio_04a contains gpio node */ 1775 1776 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1777 "Adding overlay 'overlay_gpio_04a' failed\n"); 1778 1779 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1780 "unittest_gpio_probe() failed or not called\n"); 1781 1782 /* 1783 * overlay_gpio_04b contains child gpio hog node 1784 * 1785 * - apply overlay_gpio_04b 1786 * 1787 * apply the overlay will result in 1788 * - processing gpio for overlay_gpio_04b 1789 */ 1790 1791 EXPECT_BEGIN(KERN_INFO, 1792 "gpio-<<int>> (line-C-input): hogged as input\n"); 1793 1794 /* overlay_gpio_04b contains child gpio hog node */ 1795 1796 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1797 "Adding overlay 'overlay_gpio_04b' failed\n"); 1798 1799 EXPECT_END(KERN_INFO, 1800 "gpio-<<int>> (line-C-input): hogged as input\n"); 1801 1802 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1803 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1804 unittest_gpio_chip_request_count - chip_request_count); 1805 } 1806 1807 #else 1808 1809 static void __init of_unittest_overlay_gpio(void) 1810 { 1811 /* skip tests */ 1812 } 1813 1814 #endif 1815 1816 #if IS_BUILTIN(CONFIG_I2C) 1817 1818 /* get the i2c client device instantiated at the path */ 1819 static struct i2c_client *of_path_to_i2c_client(const char *path) 1820 { 1821 struct device_node *np; 1822 struct i2c_client *client; 1823 1824 np = of_find_node_by_path(path); 1825 if (np == NULL) 1826 return NULL; 1827 1828 client = of_find_i2c_device_by_node(np); 1829 of_node_put(np); 1830 1831 return client; 1832 } 1833 1834 /* find out if a i2c client device exists at that path */ 1835 static int of_path_i2c_client_exists(const char *path) 1836 { 1837 struct i2c_client *client; 1838 1839 client = of_path_to_i2c_client(path); 1840 if (client) 1841 put_device(&client->dev); 1842 return client != NULL; 1843 } 1844 #else 1845 static int of_path_i2c_client_exists(const char *path) 1846 { 1847 return 0; 1848 } 1849 #endif 1850 1851 enum overlay_type { 1852 PDEV_OVERLAY, 1853 I2C_OVERLAY 1854 }; 1855 1856 static int of_path_device_type_exists(const char *path, 1857 enum overlay_type ovtype) 1858 { 1859 switch (ovtype) { 1860 case PDEV_OVERLAY: 1861 return of_path_platform_device_exists(path); 1862 case I2C_OVERLAY: 1863 return of_path_i2c_client_exists(path); 1864 } 1865 return 0; 1866 } 1867 1868 static const char *unittest_path(int nr, enum overlay_type ovtype) 1869 { 1870 const char *base; 1871 static char buf[256]; 1872 1873 switch (ovtype) { 1874 case PDEV_OVERLAY: 1875 base = "/testcase-data/overlay-node/test-bus"; 1876 break; 1877 case I2C_OVERLAY: 1878 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1879 break; 1880 default: 1881 buf[0] = '\0'; 1882 return buf; 1883 } 1884 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1885 buf[sizeof(buf) - 1] = '\0'; 1886 return buf; 1887 } 1888 1889 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1890 { 1891 const char *path; 1892 1893 path = unittest_path(unittest_nr, ovtype); 1894 1895 switch (ovtype) { 1896 case PDEV_OVERLAY: 1897 return of_path_platform_device_exists(path); 1898 case I2C_OVERLAY: 1899 return of_path_i2c_client_exists(path); 1900 } 1901 return 0; 1902 } 1903 1904 static const char *overlay_name_from_nr(int nr) 1905 { 1906 static char buf[256]; 1907 1908 snprintf(buf, sizeof(buf) - 1, 1909 "overlay_%d", nr); 1910 buf[sizeof(buf) - 1] = '\0'; 1911 1912 return buf; 1913 } 1914 1915 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1916 1917 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */ 1918 1919 #define MAX_UNITTEST_OVERLAYS 256 1920 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1921 static int overlay_first_id = -1; 1922 1923 static long of_unittest_overlay_tracked(int id) 1924 { 1925 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1926 return 0; 1927 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id); 1928 } 1929 1930 static void of_unittest_track_overlay(int id) 1931 { 1932 if (overlay_first_id < 0) 1933 overlay_first_id = id; 1934 id -= overlay_first_id; 1935 1936 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1937 return; 1938 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1939 } 1940 1941 static void of_unittest_untrack_overlay(int id) 1942 { 1943 if (overlay_first_id < 0) 1944 return; 1945 id -= overlay_first_id; 1946 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1947 return; 1948 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1949 } 1950 1951 static void of_unittest_destroy_tracked_overlays(void) 1952 { 1953 int id, ret, defers, ovcs_id; 1954 1955 if (overlay_first_id < 0) 1956 return; 1957 1958 /* try until no defers */ 1959 do { 1960 defers = 0; 1961 /* remove in reverse order */ 1962 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1963 if (!of_unittest_overlay_tracked(id)) 1964 continue; 1965 1966 ovcs_id = id + overlay_first_id; 1967 ret = of_overlay_remove(&ovcs_id); 1968 if (ret == -ENODEV) { 1969 pr_warn("%s: no overlay to destroy for #%d\n", 1970 __func__, id + overlay_first_id); 1971 continue; 1972 } 1973 if (ret != 0) { 1974 defers++; 1975 pr_warn("%s: overlay destroy failed for #%d\n", 1976 __func__, id + overlay_first_id); 1977 continue; 1978 } 1979 1980 of_unittest_untrack_overlay(id); 1981 } 1982 } while (defers > 0); 1983 } 1984 1985 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1986 { 1987 const char *overlay_name; 1988 1989 overlay_name = overlay_name_from_nr(overlay_nr); 1990 1991 if (!overlay_data_apply(overlay_name, overlay_id)) { 1992 unittest(0, "could not apply overlay \"%s\"\n", 1993 overlay_name); 1994 return -EFAULT; 1995 } 1996 of_unittest_track_overlay(*overlay_id); 1997 1998 return 0; 1999 } 2000 2001 /* apply an overlay while checking before and after states */ 2002 static int __init of_unittest_apply_overlay_check(int overlay_nr, 2003 int unittest_nr, int before, int after, 2004 enum overlay_type ovtype) 2005 { 2006 int ret, ovcs_id; 2007 2008 /* unittest device must not be in before state */ 2009 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2010 unittest(0, "%s with device @\"%s\" %s\n", 2011 overlay_name_from_nr(overlay_nr), 2012 unittest_path(unittest_nr, ovtype), 2013 !before ? "enabled" : "disabled"); 2014 return -EINVAL; 2015 } 2016 2017 ovcs_id = 0; 2018 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2019 if (ret != 0) { 2020 /* of_unittest_apply_overlay already called unittest() */ 2021 return ret; 2022 } 2023 2024 /* unittest device must be to set to after state */ 2025 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2026 unittest(0, "%s failed to create @\"%s\" %s\n", 2027 overlay_name_from_nr(overlay_nr), 2028 unittest_path(unittest_nr, ovtype), 2029 !after ? "enabled" : "disabled"); 2030 return -EINVAL; 2031 } 2032 2033 return 0; 2034 } 2035 2036 /* apply an overlay and then revert it while checking before, after states */ 2037 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2038 int unittest_nr, int before, int after, 2039 enum overlay_type ovtype) 2040 { 2041 int ret, ovcs_id, save_id; 2042 2043 /* unittest device must be in before state */ 2044 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2045 unittest(0, "%s with device @\"%s\" %s\n", 2046 overlay_name_from_nr(overlay_nr), 2047 unittest_path(unittest_nr, ovtype), 2048 !before ? "enabled" : "disabled"); 2049 return -EINVAL; 2050 } 2051 2052 /* apply the overlay */ 2053 ovcs_id = 0; 2054 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2055 if (ret != 0) { 2056 /* of_unittest_apply_overlay already called unittest() */ 2057 return ret; 2058 } 2059 2060 /* unittest device must be in after state */ 2061 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2062 unittest(0, "%s failed to create @\"%s\" %s\n", 2063 overlay_name_from_nr(overlay_nr), 2064 unittest_path(unittest_nr, ovtype), 2065 !after ? "enabled" : "disabled"); 2066 return -EINVAL; 2067 } 2068 2069 save_id = ovcs_id; 2070 ret = of_overlay_remove(&ovcs_id); 2071 if (ret != 0) { 2072 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2073 overlay_name_from_nr(overlay_nr), 2074 unittest_path(unittest_nr, ovtype)); 2075 return ret; 2076 } 2077 of_unittest_untrack_overlay(save_id); 2078 2079 /* unittest device must be again in before state */ 2080 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2081 unittest(0, "%s with device @\"%s\" %s\n", 2082 overlay_name_from_nr(overlay_nr), 2083 unittest_path(unittest_nr, ovtype), 2084 !before ? "enabled" : "disabled"); 2085 return -EINVAL; 2086 } 2087 2088 return 0; 2089 } 2090 2091 /* test activation of device */ 2092 static void __init of_unittest_overlay_0(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-unittest0/status"); 2098 2099 /* device should enable */ 2100 ret = of_unittest_apply_overlay_check(0, 0, 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-unittest0/status"); 2104 2105 if (ret) 2106 return; 2107 2108 unittest(1, "overlay test %d passed\n", 0); 2109 } 2110 2111 /* test deactivation of device */ 2112 static void __init of_unittest_overlay_1(void) 2113 { 2114 int ret; 2115 2116 EXPECT_BEGIN(KERN_INFO, 2117 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2118 2119 /* device should disable */ 2120 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2121 2122 EXPECT_END(KERN_INFO, 2123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2124 2125 if (ret) 2126 return; 2127 2128 unittest(1, "overlay test %d passed\n", 1); 2129 2130 } 2131 2132 /* test activation of device */ 2133 static void __init of_unittest_overlay_2(void) 2134 { 2135 int ret; 2136 2137 EXPECT_BEGIN(KERN_INFO, 2138 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2139 2140 /* device should enable */ 2141 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2142 2143 EXPECT_END(KERN_INFO, 2144 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2145 2146 if (ret) 2147 return; 2148 unittest(1, "overlay test %d passed\n", 2); 2149 } 2150 2151 /* test deactivation of device */ 2152 static void __init of_unittest_overlay_3(void) 2153 { 2154 int ret; 2155 2156 EXPECT_BEGIN(KERN_INFO, 2157 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2158 2159 /* device should disable */ 2160 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2161 2162 EXPECT_END(KERN_INFO, 2163 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2164 2165 if (ret) 2166 return; 2167 2168 unittest(1, "overlay test %d passed\n", 3); 2169 } 2170 2171 /* test activation of a full device node */ 2172 static void __init of_unittest_overlay_4(void) 2173 { 2174 /* device should disable */ 2175 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2176 return; 2177 2178 unittest(1, "overlay test %d passed\n", 4); 2179 } 2180 2181 /* test overlay apply/revert sequence */ 2182 static void __init of_unittest_overlay_5(void) 2183 { 2184 int ret; 2185 2186 EXPECT_BEGIN(KERN_INFO, 2187 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2188 2189 /* device should disable */ 2190 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2191 2192 EXPECT_END(KERN_INFO, 2193 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2194 2195 if (ret) 2196 return; 2197 2198 unittest(1, "overlay test %d passed\n", 5); 2199 } 2200 2201 /* test overlay application in sequence */ 2202 static void __init of_unittest_overlay_6(void) 2203 { 2204 int i, ov_id[2], ovcs_id; 2205 int overlay_nr = 6, unittest_nr = 6; 2206 int before = 0, after = 1; 2207 const char *overlay_name; 2208 2209 int ret; 2210 2211 /* unittest device must be in before state */ 2212 for (i = 0; i < 2; i++) { 2213 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2214 != before) { 2215 unittest(0, "%s with device @\"%s\" %s\n", 2216 overlay_name_from_nr(overlay_nr + i), 2217 unittest_path(unittest_nr + i, 2218 PDEV_OVERLAY), 2219 !before ? "enabled" : "disabled"); 2220 return; 2221 } 2222 } 2223 2224 /* apply the overlays */ 2225 2226 EXPECT_BEGIN(KERN_INFO, 2227 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2228 2229 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2230 2231 ret = overlay_data_apply(overlay_name, &ovcs_id); 2232 2233 if (!ret) { 2234 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2235 return; 2236 } 2237 ov_id[0] = ovcs_id; 2238 of_unittest_track_overlay(ov_id[0]); 2239 2240 EXPECT_END(KERN_INFO, 2241 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2242 2243 EXPECT_BEGIN(KERN_INFO, 2244 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2245 2246 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2247 2248 ret = overlay_data_apply(overlay_name, &ovcs_id); 2249 2250 if (!ret) { 2251 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2252 return; 2253 } 2254 ov_id[1] = ovcs_id; 2255 of_unittest_track_overlay(ov_id[1]); 2256 2257 EXPECT_END(KERN_INFO, 2258 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2259 2260 2261 for (i = 0; i < 2; i++) { 2262 /* unittest device must be in after state */ 2263 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2264 != after) { 2265 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2266 overlay_name_from_nr(overlay_nr + i), 2267 unittest_path(unittest_nr + i, 2268 PDEV_OVERLAY), 2269 !after ? "enabled" : "disabled"); 2270 return; 2271 } 2272 } 2273 2274 for (i = 1; i >= 0; i--) { 2275 ovcs_id = ov_id[i]; 2276 if (of_overlay_remove(&ovcs_id)) { 2277 unittest(0, "%s failed destroy @\"%s\"\n", 2278 overlay_name_from_nr(overlay_nr + i), 2279 unittest_path(unittest_nr + i, 2280 PDEV_OVERLAY)); 2281 return; 2282 } 2283 of_unittest_untrack_overlay(ov_id[i]); 2284 } 2285 2286 for (i = 0; i < 2; i++) { 2287 /* unittest device must be again in before state */ 2288 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2289 != before) { 2290 unittest(0, "%s with device @\"%s\" %s\n", 2291 overlay_name_from_nr(overlay_nr + i), 2292 unittest_path(unittest_nr + i, 2293 PDEV_OVERLAY), 2294 !before ? "enabled" : "disabled"); 2295 return; 2296 } 2297 } 2298 2299 unittest(1, "overlay test %d passed\n", 6); 2300 2301 } 2302 2303 /* test overlay application in sequence */ 2304 static void __init of_unittest_overlay_8(void) 2305 { 2306 int i, ov_id[2], ovcs_id; 2307 int overlay_nr = 8, unittest_nr = 8; 2308 const char *overlay_name; 2309 int ret; 2310 2311 /* we don't care about device state in this test */ 2312 2313 EXPECT_BEGIN(KERN_INFO, 2314 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2315 2316 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2317 2318 ret = overlay_data_apply(overlay_name, &ovcs_id); 2319 if (!ret) 2320 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2321 2322 EXPECT_END(KERN_INFO, 2323 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2324 2325 if (!ret) 2326 return; 2327 2328 ov_id[0] = ovcs_id; 2329 of_unittest_track_overlay(ov_id[0]); 2330 2331 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2332 2333 EXPECT_BEGIN(KERN_INFO, 2334 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2335 2336 /* apply the overlays */ 2337 ret = overlay_data_apply(overlay_name, &ovcs_id); 2338 2339 EXPECT_END(KERN_INFO, 2340 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2341 2342 if (!ret) { 2343 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2344 return; 2345 } 2346 2347 ov_id[1] = ovcs_id; 2348 of_unittest_track_overlay(ov_id[1]); 2349 2350 /* now try to remove first overlay (it should fail) */ 2351 ovcs_id = ov_id[0]; 2352 2353 EXPECT_BEGIN(KERN_INFO, 2354 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2355 2356 EXPECT_BEGIN(KERN_INFO, 2357 "OF: overlay: overlay #6 is not topmost"); 2358 2359 ret = of_overlay_remove(&ovcs_id); 2360 2361 EXPECT_END(KERN_INFO, 2362 "OF: overlay: overlay #6 is not topmost"); 2363 2364 EXPECT_END(KERN_INFO, 2365 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2366 2367 if (!ret) { 2368 unittest(0, "%s was destroyed @\"%s\"\n", 2369 overlay_name_from_nr(overlay_nr + 0), 2370 unittest_path(unittest_nr, 2371 PDEV_OVERLAY)); 2372 return; 2373 } 2374 2375 /* removing them in order should work */ 2376 for (i = 1; i >= 0; i--) { 2377 ovcs_id = ov_id[i]; 2378 if (of_overlay_remove(&ovcs_id)) { 2379 unittest(0, "%s not destroyed @\"%s\"\n", 2380 overlay_name_from_nr(overlay_nr + i), 2381 unittest_path(unittest_nr, 2382 PDEV_OVERLAY)); 2383 return; 2384 } 2385 of_unittest_untrack_overlay(ov_id[i]); 2386 } 2387 2388 unittest(1, "overlay test %d passed\n", 8); 2389 } 2390 2391 /* test insertion of a bus with parent devices */ 2392 static void __init of_unittest_overlay_10(void) 2393 { 2394 int ret; 2395 char *child_path; 2396 2397 /* device should disable */ 2398 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2399 2400 if (unittest(ret == 0, 2401 "overlay test %d failed; overlay application\n", 10)) 2402 return; 2403 2404 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2405 unittest_path(10, PDEV_OVERLAY)); 2406 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2407 return; 2408 2409 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2410 kfree(child_path); 2411 2412 unittest(ret, "overlay test %d failed; no child device\n", 10); 2413 } 2414 2415 /* test insertion of a bus with parent devices (and revert) */ 2416 static void __init of_unittest_overlay_11(void) 2417 { 2418 int ret; 2419 2420 /* device should disable */ 2421 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2422 PDEV_OVERLAY); 2423 2424 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2425 } 2426 2427 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2428 2429 struct unittest_i2c_bus_data { 2430 struct platform_device *pdev; 2431 struct i2c_adapter adap; 2432 }; 2433 2434 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2435 struct i2c_msg *msgs, int num) 2436 { 2437 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2438 2439 (void)std; 2440 2441 return num; 2442 } 2443 2444 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2445 { 2446 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2447 } 2448 2449 static const struct i2c_algorithm unittest_i2c_algo = { 2450 .master_xfer = unittest_i2c_master_xfer, 2451 .functionality = unittest_i2c_functionality, 2452 }; 2453 2454 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2455 { 2456 struct device *dev = &pdev->dev; 2457 struct device_node *np = dev->of_node; 2458 struct unittest_i2c_bus_data *std; 2459 struct i2c_adapter *adap; 2460 int ret; 2461 2462 if (np == NULL) { 2463 dev_err(dev, "No OF data for device\n"); 2464 return -EINVAL; 2465 2466 } 2467 2468 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2469 2470 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2471 if (!std) 2472 return -ENOMEM; 2473 2474 /* link them together */ 2475 std->pdev = pdev; 2476 platform_set_drvdata(pdev, std); 2477 2478 adap = &std->adap; 2479 i2c_set_adapdata(adap, std); 2480 adap->nr = -1; 2481 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2482 adap->class = I2C_CLASS_DEPRECATED; 2483 adap->algo = &unittest_i2c_algo; 2484 adap->dev.parent = dev; 2485 adap->dev.of_node = dev->of_node; 2486 adap->timeout = 5 * HZ; 2487 adap->retries = 3; 2488 2489 ret = i2c_add_numbered_adapter(adap); 2490 if (ret != 0) { 2491 dev_err(dev, "Failed to add I2C adapter\n"); 2492 return ret; 2493 } 2494 2495 return 0; 2496 } 2497 2498 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2499 { 2500 struct device *dev = &pdev->dev; 2501 struct device_node *np = dev->of_node; 2502 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2503 2504 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2505 i2c_del_adapter(&std->adap); 2506 2507 return 0; 2508 } 2509 2510 static const struct of_device_id unittest_i2c_bus_match[] = { 2511 { .compatible = "unittest-i2c-bus", }, 2512 {}, 2513 }; 2514 2515 static struct platform_driver unittest_i2c_bus_driver = { 2516 .probe = unittest_i2c_bus_probe, 2517 .remove = unittest_i2c_bus_remove, 2518 .driver = { 2519 .name = "unittest-i2c-bus", 2520 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2521 }, 2522 }; 2523 2524 static int unittest_i2c_dev_probe(struct i2c_client *client, 2525 const struct i2c_device_id *id) 2526 { 2527 struct device *dev = &client->dev; 2528 struct device_node *np = client->dev.of_node; 2529 2530 if (!np) { 2531 dev_err(dev, "No OF node\n"); 2532 return -EINVAL; 2533 } 2534 2535 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2536 2537 return 0; 2538 }; 2539 2540 static int unittest_i2c_dev_remove(struct i2c_client *client) 2541 { 2542 struct device *dev = &client->dev; 2543 struct device_node *np = client->dev.of_node; 2544 2545 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2546 return 0; 2547 } 2548 2549 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2550 { .name = "unittest-i2c-dev" }, 2551 { } 2552 }; 2553 2554 static struct i2c_driver unittest_i2c_dev_driver = { 2555 .driver = { 2556 .name = "unittest-i2c-dev", 2557 }, 2558 .probe = unittest_i2c_dev_probe, 2559 .remove = unittest_i2c_dev_remove, 2560 .id_table = unittest_i2c_dev_id, 2561 }; 2562 2563 #if IS_BUILTIN(CONFIG_I2C_MUX) 2564 2565 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2566 { 2567 return 0; 2568 } 2569 2570 static int unittest_i2c_mux_probe(struct i2c_client *client, 2571 const struct i2c_device_id *id) 2572 { 2573 int i, nchans; 2574 struct device *dev = &client->dev; 2575 struct i2c_adapter *adap = client->adapter; 2576 struct device_node *np = client->dev.of_node, *child; 2577 struct i2c_mux_core *muxc; 2578 u32 reg, max_reg; 2579 2580 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2581 2582 if (!np) { 2583 dev_err(dev, "No OF node\n"); 2584 return -EINVAL; 2585 } 2586 2587 max_reg = (u32)-1; 2588 for_each_child_of_node(np, child) { 2589 if (of_property_read_u32(child, "reg", ®)) 2590 continue; 2591 if (max_reg == (u32)-1 || reg > max_reg) 2592 max_reg = reg; 2593 } 2594 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2595 if (nchans == 0) { 2596 dev_err(dev, "No channels\n"); 2597 return -EINVAL; 2598 } 2599 2600 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2601 unittest_i2c_mux_select_chan, NULL); 2602 if (!muxc) 2603 return -ENOMEM; 2604 for (i = 0; i < nchans; i++) { 2605 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2606 dev_err(dev, "Failed to register mux #%d\n", i); 2607 i2c_mux_del_adapters(muxc); 2608 return -ENODEV; 2609 } 2610 } 2611 2612 i2c_set_clientdata(client, muxc); 2613 2614 return 0; 2615 }; 2616 2617 static int unittest_i2c_mux_remove(struct i2c_client *client) 2618 { 2619 struct device *dev = &client->dev; 2620 struct device_node *np = client->dev.of_node; 2621 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2622 2623 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2624 i2c_mux_del_adapters(muxc); 2625 return 0; 2626 } 2627 2628 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2629 { .name = "unittest-i2c-mux" }, 2630 { } 2631 }; 2632 2633 static struct i2c_driver unittest_i2c_mux_driver = { 2634 .driver = { 2635 .name = "unittest-i2c-mux", 2636 }, 2637 .probe = unittest_i2c_mux_probe, 2638 .remove = unittest_i2c_mux_remove, 2639 .id_table = unittest_i2c_mux_id, 2640 }; 2641 2642 #endif 2643 2644 static int of_unittest_overlay_i2c_init(void) 2645 { 2646 int ret; 2647 2648 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2649 if (unittest(ret == 0, 2650 "could not register unittest i2c device driver\n")) 2651 return ret; 2652 2653 ret = platform_driver_register(&unittest_i2c_bus_driver); 2654 2655 if (unittest(ret == 0, 2656 "could not register unittest i2c bus driver\n")) 2657 return ret; 2658 2659 #if IS_BUILTIN(CONFIG_I2C_MUX) 2660 2661 EXPECT_BEGIN(KERN_INFO, 2662 "i2c i2c-1: Added multiplexed i2c bus 2"); 2663 2664 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2665 2666 EXPECT_END(KERN_INFO, 2667 "i2c i2c-1: Added multiplexed i2c bus 2"); 2668 2669 if (unittest(ret == 0, 2670 "could not register unittest i2c mux driver\n")) 2671 return ret; 2672 #endif 2673 2674 return 0; 2675 } 2676 2677 static void of_unittest_overlay_i2c_cleanup(void) 2678 { 2679 #if IS_BUILTIN(CONFIG_I2C_MUX) 2680 i2c_del_driver(&unittest_i2c_mux_driver); 2681 #endif 2682 platform_driver_unregister(&unittest_i2c_bus_driver); 2683 i2c_del_driver(&unittest_i2c_dev_driver); 2684 } 2685 2686 static void __init of_unittest_overlay_i2c_12(void) 2687 { 2688 int ret; 2689 2690 /* device should enable */ 2691 EXPECT_BEGIN(KERN_INFO, 2692 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2693 2694 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2695 2696 EXPECT_END(KERN_INFO, 2697 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2698 2699 if (ret) 2700 return; 2701 2702 unittest(1, "overlay test %d passed\n", 12); 2703 } 2704 2705 /* test deactivation of device */ 2706 static void __init of_unittest_overlay_i2c_13(void) 2707 { 2708 int ret; 2709 2710 EXPECT_BEGIN(KERN_INFO, 2711 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2712 2713 /* device should disable */ 2714 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2715 2716 EXPECT_END(KERN_INFO, 2717 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2718 2719 if (ret) 2720 return; 2721 2722 unittest(1, "overlay test %d passed\n", 13); 2723 } 2724 2725 /* just check for i2c mux existence */ 2726 static void of_unittest_overlay_i2c_14(void) 2727 { 2728 } 2729 2730 static void __init of_unittest_overlay_i2c_15(void) 2731 { 2732 int ret; 2733 2734 /* device should enable */ 2735 EXPECT_BEGIN(KERN_INFO, 2736 "i2c i2c-1: Added multiplexed i2c bus 3"); 2737 2738 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2739 2740 EXPECT_END(KERN_INFO, 2741 "i2c i2c-1: Added multiplexed i2c bus 3"); 2742 2743 if (ret) 2744 return; 2745 2746 unittest(1, "overlay test %d passed\n", 15); 2747 } 2748 2749 #else 2750 2751 static inline void of_unittest_overlay_i2c_14(void) { } 2752 static inline void of_unittest_overlay_i2c_15(void) { } 2753 2754 #endif 2755 2756 static void __init of_unittest_overlay(void) 2757 { 2758 struct device_node *bus_np = NULL; 2759 2760 if (platform_driver_register(&unittest_driver)) { 2761 unittest(0, "could not register unittest driver\n"); 2762 goto out; 2763 } 2764 2765 bus_np = of_find_node_by_path(bus_path); 2766 if (bus_np == NULL) { 2767 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2768 goto out; 2769 } 2770 2771 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2772 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2773 goto out; 2774 } 2775 2776 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2777 unittest(0, "could not find unittest0 @ \"%s\"\n", 2778 unittest_path(100, PDEV_OVERLAY)); 2779 goto out; 2780 } 2781 2782 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2783 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2784 unittest_path(101, PDEV_OVERLAY)); 2785 goto out; 2786 } 2787 2788 unittest(1, "basic infrastructure of overlays passed"); 2789 2790 /* tests in sequence */ 2791 of_unittest_overlay_0(); 2792 of_unittest_overlay_1(); 2793 of_unittest_overlay_2(); 2794 of_unittest_overlay_3(); 2795 of_unittest_overlay_4(); 2796 of_unittest_overlay_5(); 2797 of_unittest_overlay_6(); 2798 of_unittest_overlay_8(); 2799 2800 of_unittest_overlay_10(); 2801 of_unittest_overlay_11(); 2802 2803 #if IS_BUILTIN(CONFIG_I2C) 2804 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2805 goto out; 2806 2807 of_unittest_overlay_i2c_12(); 2808 of_unittest_overlay_i2c_13(); 2809 of_unittest_overlay_i2c_14(); 2810 of_unittest_overlay_i2c_15(); 2811 2812 of_unittest_overlay_i2c_cleanup(); 2813 #endif 2814 2815 of_unittest_overlay_gpio(); 2816 2817 of_unittest_destroy_tracked_overlays(); 2818 2819 out: 2820 of_node_put(bus_np); 2821 } 2822 2823 #else 2824 static inline void __init of_unittest_overlay(void) { } 2825 #endif 2826 2827 #ifdef CONFIG_OF_OVERLAY 2828 2829 /* 2830 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2831 * in scripts/Makefile.lib 2832 */ 2833 2834 #define OVERLAY_INFO_EXTERN(name) \ 2835 extern uint8_t __dtb_##name##_begin[]; \ 2836 extern uint8_t __dtb_##name##_end[] 2837 2838 #define OVERLAY_INFO(overlay_name, expected) \ 2839 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2840 .dtb_end = __dtb_##overlay_name##_end, \ 2841 .expected_result = expected, \ 2842 .name = #overlay_name, \ 2843 } 2844 2845 struct overlay_info { 2846 uint8_t *dtb_begin; 2847 uint8_t *dtb_end; 2848 int expected_result; 2849 int overlay_id; 2850 char *name; 2851 }; 2852 2853 OVERLAY_INFO_EXTERN(overlay_base); 2854 OVERLAY_INFO_EXTERN(overlay); 2855 OVERLAY_INFO_EXTERN(overlay_0); 2856 OVERLAY_INFO_EXTERN(overlay_1); 2857 OVERLAY_INFO_EXTERN(overlay_2); 2858 OVERLAY_INFO_EXTERN(overlay_3); 2859 OVERLAY_INFO_EXTERN(overlay_4); 2860 OVERLAY_INFO_EXTERN(overlay_5); 2861 OVERLAY_INFO_EXTERN(overlay_6); 2862 OVERLAY_INFO_EXTERN(overlay_7); 2863 OVERLAY_INFO_EXTERN(overlay_8); 2864 OVERLAY_INFO_EXTERN(overlay_9); 2865 OVERLAY_INFO_EXTERN(overlay_10); 2866 OVERLAY_INFO_EXTERN(overlay_11); 2867 OVERLAY_INFO_EXTERN(overlay_12); 2868 OVERLAY_INFO_EXTERN(overlay_13); 2869 OVERLAY_INFO_EXTERN(overlay_15); 2870 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2871 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2872 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2873 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2874 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2875 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2876 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2877 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2878 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2879 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2880 2881 /* entries found by name */ 2882 static struct overlay_info overlays[] = { 2883 OVERLAY_INFO(overlay_base, -9999), 2884 OVERLAY_INFO(overlay, 0), 2885 OVERLAY_INFO(overlay_0, 0), 2886 OVERLAY_INFO(overlay_1, 0), 2887 OVERLAY_INFO(overlay_2, 0), 2888 OVERLAY_INFO(overlay_3, 0), 2889 OVERLAY_INFO(overlay_4, 0), 2890 OVERLAY_INFO(overlay_5, 0), 2891 OVERLAY_INFO(overlay_6, 0), 2892 OVERLAY_INFO(overlay_7, 0), 2893 OVERLAY_INFO(overlay_8, 0), 2894 OVERLAY_INFO(overlay_9, 0), 2895 OVERLAY_INFO(overlay_10, 0), 2896 OVERLAY_INFO(overlay_11, 0), 2897 OVERLAY_INFO(overlay_12, 0), 2898 OVERLAY_INFO(overlay_13, 0), 2899 OVERLAY_INFO(overlay_15, 0), 2900 OVERLAY_INFO(overlay_gpio_01, 0), 2901 OVERLAY_INFO(overlay_gpio_02a, 0), 2902 OVERLAY_INFO(overlay_gpio_02b, 0), 2903 OVERLAY_INFO(overlay_gpio_03, 0), 2904 OVERLAY_INFO(overlay_gpio_04a, 0), 2905 OVERLAY_INFO(overlay_gpio_04b, 0), 2906 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2907 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2908 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2909 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2910 /* end marker */ 2911 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2912 }; 2913 2914 static struct device_node *overlay_base_root; 2915 2916 static void * __init dt_alloc_memory(u64 size, u64 align) 2917 { 2918 void *ptr = memblock_alloc(size, align); 2919 2920 if (!ptr) 2921 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2922 __func__, size, align); 2923 2924 return ptr; 2925 } 2926 2927 /* 2928 * Create base device tree for the overlay unittest. 2929 * 2930 * This is called from very early boot code. 2931 * 2932 * Do as much as possible the same way as done in __unflatten_device_tree 2933 * and other early boot steps for the normal FDT so that the overlay base 2934 * unflattened tree will have the same characteristics as the real tree 2935 * (such as having memory allocated by the early allocator). The goal 2936 * is to test "the real thing" as much as possible, and test "test setup 2937 * code" as little as possible. 2938 * 2939 * Have to stop before resolving phandles, because that uses kmalloc. 2940 */ 2941 void __init unittest_unflatten_overlay_base(void) 2942 { 2943 struct overlay_info *info; 2944 u32 data_size; 2945 void *new_fdt; 2946 u32 size; 2947 int found = 0; 2948 const char *overlay_name = "overlay_base"; 2949 2950 for (info = overlays; info && info->name; info++) { 2951 if (!strcmp(overlay_name, info->name)) { 2952 found = 1; 2953 break; 2954 } 2955 } 2956 if (!found) { 2957 pr_err("no overlay data for %s\n", overlay_name); 2958 return; 2959 } 2960 2961 info = &overlays[0]; 2962 2963 if (info->expected_result != -9999) { 2964 pr_err("No dtb 'overlay_base' to attach\n"); 2965 return; 2966 } 2967 2968 data_size = info->dtb_end - info->dtb_begin; 2969 if (!data_size) { 2970 pr_err("No dtb 'overlay_base' to attach\n"); 2971 return; 2972 } 2973 2974 size = fdt_totalsize(info->dtb_begin); 2975 if (size != data_size) { 2976 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2977 return; 2978 } 2979 2980 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2981 if (!new_fdt) { 2982 pr_err("alloc for dtb 'overlay_base' failed"); 2983 return; 2984 } 2985 2986 memcpy(new_fdt, info->dtb_begin, size); 2987 2988 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2989 dt_alloc_memory, true); 2990 } 2991 2992 /* 2993 * The purpose of of_unittest_overlay_data_add is to add an 2994 * overlay in the normal fashion. This is a test of the whole 2995 * picture, instead of testing individual elements. 2996 * 2997 * A secondary purpose is to be able to verify that the contents of 2998 * /proc/device-tree/ contains the updated structure and values from 2999 * the overlay. That must be verified separately in user space. 3000 * 3001 * Return 0 on unexpected error. 3002 */ 3003 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 3004 { 3005 struct overlay_info *info; 3006 int found = 0; 3007 int ret; 3008 u32 size; 3009 3010 for (info = overlays; info && info->name; info++) { 3011 if (!strcmp(overlay_name, info->name)) { 3012 found = 1; 3013 break; 3014 } 3015 } 3016 if (!found) { 3017 pr_err("no overlay data for %s\n", overlay_name); 3018 return 0; 3019 } 3020 3021 size = info->dtb_end - info->dtb_begin; 3022 if (!size) 3023 pr_err("no overlay data for %s\n", overlay_name); 3024 3025 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 3026 if (overlay_id) 3027 *overlay_id = info->overlay_id; 3028 if (ret < 0) 3029 goto out; 3030 3031 pr_debug("%s applied\n", overlay_name); 3032 3033 out: 3034 if (ret != info->expected_result) 3035 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3036 info->expected_result, ret, overlay_name); 3037 3038 return (ret == info->expected_result); 3039 } 3040 3041 /* 3042 * The purpose of of_unittest_overlay_high_level is to add an overlay 3043 * in the normal fashion. This is a test of the whole picture, 3044 * instead of individual elements. 3045 * 3046 * The first part of the function is _not_ normal overlay usage; it is 3047 * finishing splicing the base overlay device tree into the live tree. 3048 */ 3049 static __init void of_unittest_overlay_high_level(void) 3050 { 3051 struct device_node *last_sibling; 3052 struct device_node *np; 3053 struct device_node *of_symbols; 3054 struct device_node *overlay_base_symbols; 3055 struct device_node **pprev; 3056 struct property *prop; 3057 int ret; 3058 3059 if (!overlay_base_root) { 3060 unittest(0, "overlay_base_root not initialized\n"); 3061 return; 3062 } 3063 3064 /* 3065 * Could not fixup phandles in unittest_unflatten_overlay_base() 3066 * because kmalloc() was not yet available. 3067 */ 3068 of_overlay_mutex_lock(); 3069 of_resolve_phandles(overlay_base_root); 3070 of_overlay_mutex_unlock(); 3071 3072 3073 /* 3074 * do not allow overlay_base to duplicate any node already in 3075 * tree, this greatly simplifies the code 3076 */ 3077 3078 /* 3079 * remove overlay_base_root node "__local_fixups", after 3080 * being used by of_resolve_phandles() 3081 */ 3082 pprev = &overlay_base_root->child; 3083 for (np = overlay_base_root->child; np; np = np->sibling) { 3084 if (of_node_name_eq(np, "__local_fixups__")) { 3085 *pprev = np->sibling; 3086 break; 3087 } 3088 pprev = &np->sibling; 3089 } 3090 3091 /* remove overlay_base_root node "__symbols__" if in live tree */ 3092 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3093 if (of_symbols) { 3094 /* will have to graft properties from node into live tree */ 3095 pprev = &overlay_base_root->child; 3096 for (np = overlay_base_root->child; np; np = np->sibling) { 3097 if (of_node_name_eq(np, "__symbols__")) { 3098 overlay_base_symbols = np; 3099 *pprev = np->sibling; 3100 break; 3101 } 3102 pprev = &np->sibling; 3103 } 3104 } 3105 3106 for_each_child_of_node(overlay_base_root, np) { 3107 struct device_node *base_child; 3108 for_each_child_of_node(of_root, base_child) { 3109 if (!strcmp(np->full_name, base_child->full_name)) { 3110 unittest(0, "illegal node name in overlay_base %pOFn", 3111 np); 3112 of_node_put(np); 3113 of_node_put(base_child); 3114 return; 3115 } 3116 } 3117 } 3118 3119 /* 3120 * overlay 'overlay_base' is not allowed to have root 3121 * properties, so only need to splice nodes into main device tree. 3122 * 3123 * root node of *overlay_base_root will not be freed, it is lost 3124 * memory. 3125 */ 3126 3127 for (np = overlay_base_root->child; np; np = np->sibling) 3128 np->parent = of_root; 3129 3130 mutex_lock(&of_mutex); 3131 3132 for (last_sibling = np = of_root->child; np; np = np->sibling) 3133 last_sibling = np; 3134 3135 if (last_sibling) 3136 last_sibling->sibling = overlay_base_root->child; 3137 else 3138 of_root->child = overlay_base_root->child; 3139 3140 for_each_of_allnodes_from(overlay_base_root, np) 3141 __of_attach_node_sysfs(np); 3142 3143 if (of_symbols) { 3144 struct property *new_prop; 3145 for_each_property_of_node(overlay_base_symbols, prop) { 3146 3147 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3148 if (!new_prop) { 3149 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3150 prop->name); 3151 goto err_unlock; 3152 } 3153 if (__of_add_property(of_symbols, new_prop)) { 3154 kfree(new_prop->name); 3155 kfree(new_prop->value); 3156 kfree(new_prop); 3157 /* "name" auto-generated by unflatten */ 3158 if (!strcmp(prop->name, "name")) 3159 continue; 3160 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3161 prop->name); 3162 goto err_unlock; 3163 } 3164 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3165 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3166 prop->name); 3167 goto err_unlock; 3168 } 3169 } 3170 } 3171 3172 mutex_unlock(&of_mutex); 3173 3174 3175 /* now do the normal overlay usage test */ 3176 3177 EXPECT_BEGIN(KERN_ERR, 3178 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3179 EXPECT_BEGIN(KERN_ERR, 3180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3181 EXPECT_BEGIN(KERN_ERR, 3182 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3183 EXPECT_BEGIN(KERN_ERR, 3184 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3185 EXPECT_BEGIN(KERN_ERR, 3186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3187 EXPECT_BEGIN(KERN_ERR, 3188 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3189 EXPECT_BEGIN(KERN_ERR, 3190 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3191 EXPECT_BEGIN(KERN_ERR, 3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3193 EXPECT_BEGIN(KERN_ERR, 3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3195 EXPECT_BEGIN(KERN_ERR, 3196 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3197 EXPECT_BEGIN(KERN_ERR, 3198 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3199 3200 ret = overlay_data_apply("overlay", NULL); 3201 3202 EXPECT_END(KERN_ERR, 3203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3204 EXPECT_END(KERN_ERR, 3205 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3206 EXPECT_END(KERN_ERR, 3207 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3208 EXPECT_END(KERN_ERR, 3209 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3210 EXPECT_END(KERN_ERR, 3211 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3212 EXPECT_END(KERN_ERR, 3213 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3214 EXPECT_END(KERN_ERR, 3215 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3216 EXPECT_END(KERN_ERR, 3217 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3218 EXPECT_END(KERN_ERR, 3219 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3220 EXPECT_END(KERN_ERR, 3221 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3222 EXPECT_END(KERN_ERR, 3223 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3224 3225 unittest(ret, "Adding overlay 'overlay' failed\n"); 3226 3227 EXPECT_BEGIN(KERN_ERR, 3228 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3229 EXPECT_BEGIN(KERN_ERR, 3230 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3231 3232 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3233 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3234 3235 EXPECT_END(KERN_ERR, 3236 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3237 EXPECT_END(KERN_ERR, 3238 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3239 3240 EXPECT_BEGIN(KERN_ERR, 3241 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3242 EXPECT_BEGIN(KERN_ERR, 3243 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3244 EXPECT_BEGIN(KERN_ERR, 3245 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3246 3247 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3248 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3249 3250 EXPECT_END(KERN_ERR, 3251 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3252 EXPECT_END(KERN_ERR, 3253 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3254 EXPECT_END(KERN_ERR, 3255 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3256 3257 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3258 "Adding overlay 'overlay_bad_phandle' failed\n"); 3259 3260 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3261 "Adding overlay 'overlay_bad_symbol' failed\n"); 3262 3263 return; 3264 3265 err_unlock: 3266 mutex_unlock(&of_mutex); 3267 } 3268 3269 #else 3270 3271 static inline __init void of_unittest_overlay_high_level(void) {} 3272 3273 #endif 3274 3275 static int __init of_unittest(void) 3276 { 3277 struct device_node *np; 3278 int res; 3279 3280 pr_info("start of unittest - you will see error messages\n"); 3281 3282 /* adding data for unittest */ 3283 3284 if (IS_ENABLED(CONFIG_UML)) 3285 unittest_unflatten_overlay_base(); 3286 3287 res = unittest_data_add(); 3288 if (res) 3289 return res; 3290 if (!of_aliases) 3291 of_aliases = of_find_node_by_path("/aliases"); 3292 3293 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3294 if (!np) { 3295 pr_info("No testcase data in device tree; not running tests\n"); 3296 return 0; 3297 } 3298 of_node_put(np); 3299 3300 of_unittest_check_tree_linkage(); 3301 of_unittest_check_phandles(); 3302 of_unittest_find_node_by_name(); 3303 of_unittest_dynamic(); 3304 of_unittest_parse_phandle_with_args(); 3305 of_unittest_parse_phandle_with_args_map(); 3306 of_unittest_printf(); 3307 of_unittest_property_string(); 3308 of_unittest_property_copy(); 3309 of_unittest_changeset(); 3310 of_unittest_parse_interrupts(); 3311 of_unittest_parse_interrupts_extended(); 3312 of_unittest_dma_get_max_cpu_address(); 3313 of_unittest_parse_dma_ranges(); 3314 of_unittest_pci_dma_ranges(); 3315 of_unittest_match_node(); 3316 of_unittest_platform_populate(); 3317 of_unittest_overlay(); 3318 3319 /* Double check linkage after removing testcase data */ 3320 of_unittest_check_tree_linkage(); 3321 3322 of_unittest_overlay_high_level(); 3323 3324 pr_info("end of unittest - %i passed, %i failed\n", 3325 unittest_results.passed, unittest_results.failed); 3326 3327 return 0; 3328 } 3329 late_initcall(of_unittest); 3330