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/err.h> 11 #include <linux/errno.h> 12 #include <linux/hashtable.h> 13 #include <linux/libfdt.h> 14 #include <linux/of.h> 15 #include <linux/of_address.h> 16 #include <linux/of_fdt.h> 17 #include <linux/of_irq.h> 18 #include <linux/of_platform.h> 19 #include <linux/list.h> 20 #include <linux/mutex.h> 21 #include <linux/slab.h> 22 #include <linux/device.h> 23 #include <linux/platform_device.h> 24 25 #include <linux/i2c.h> 26 #include <linux/i2c-mux.h> 27 #include <linux/gpio/driver.h> 28 29 #include <linux/bitops.h> 30 31 #include "of_private.h" 32 33 static struct unittest_results { 34 int passed; 35 int failed; 36 } unittest_results; 37 38 #define unittest(result, fmt, ...) ({ \ 39 bool failed = !(result); \ 40 if (failed) { \ 41 unittest_results.failed++; \ 42 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 43 } else { \ 44 unittest_results.passed++; \ 45 pr_debug("pass %s():%i\n", __func__, __LINE__); \ 46 } \ 47 failed; \ 48 }) 49 50 /* 51 * Expected message may have a message level other than KERN_INFO. 52 * Print the expected message only if the current loglevel will allow 53 * the actual message to print. 54 * 55 * Do not use EXPECT_BEGIN() or EXPECT_END() for messages generated by 56 * pr_debug(). 57 */ 58 #define EXPECT_BEGIN(level, fmt, ...) \ 59 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 60 61 #define EXPECT_END(level, fmt, ...) \ 62 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 63 64 static void __init of_unittest_find_node_by_name(void) 65 { 66 struct device_node *np; 67 const char *options, *name; 68 69 np = of_find_node_by_path("/testcase-data"); 70 name = kasprintf(GFP_KERNEL, "%pOF", np); 71 unittest(np && !strcmp("/testcase-data", name), 72 "find /testcase-data failed\n"); 73 of_node_put(np); 74 kfree(name); 75 76 /* Test if trailing '/' works */ 77 np = of_find_node_by_path("/testcase-data/"); 78 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 79 80 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 81 name = kasprintf(GFP_KERNEL, "%pOF", np); 82 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 83 "find /testcase-data/phandle-tests/consumer-a failed\n"); 84 of_node_put(np); 85 kfree(name); 86 87 np = of_find_node_by_path("testcase-alias"); 88 name = kasprintf(GFP_KERNEL, "%pOF", np); 89 unittest(np && !strcmp("/testcase-data", name), 90 "find testcase-alias failed\n"); 91 of_node_put(np); 92 kfree(name); 93 94 /* Test if trailing '/' works on aliases */ 95 np = of_find_node_by_path("testcase-alias/"); 96 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 97 98 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 99 name = kasprintf(GFP_KERNEL, "%pOF", np); 100 unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 101 "find testcase-alias/phandle-tests/consumer-a failed\n"); 102 of_node_put(np); 103 kfree(name); 104 105 np = of_find_node_by_path("/testcase-data/missing-path"); 106 unittest(!np, "non-existent path returned node %pOF\n", np); 107 of_node_put(np); 108 109 np = of_find_node_by_path("missing-alias"); 110 unittest(!np, "non-existent alias returned node %pOF\n", np); 111 of_node_put(np); 112 113 np = of_find_node_by_path("testcase-alias/missing-path"); 114 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 115 of_node_put(np); 116 117 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 118 unittest(np && !strcmp("testoption", options), 119 "option path test failed\n"); 120 of_node_put(np); 121 122 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 123 unittest(np && !strcmp("test/option", options), 124 "option path test, subcase #1 failed\n"); 125 of_node_put(np); 126 127 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 128 unittest(np && !strcmp("test/option", options), 129 "option path test, subcase #2 failed\n"); 130 of_node_put(np); 131 132 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 133 unittest(np, "NULL option path test failed\n"); 134 of_node_put(np); 135 136 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 137 &options); 138 unittest(np && !strcmp("testaliasoption", options), 139 "option alias path test failed\n"); 140 of_node_put(np); 141 142 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 143 &options); 144 unittest(np && !strcmp("test/alias/option", options), 145 "option alias path test, subcase #1 failed\n"); 146 of_node_put(np); 147 148 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 149 unittest(np, "NULL option alias path test failed\n"); 150 of_node_put(np); 151 152 options = "testoption"; 153 np = of_find_node_opts_by_path("testcase-alias", &options); 154 unittest(np && !options, "option clearing test failed\n"); 155 of_node_put(np); 156 157 options = "testoption"; 158 np = of_find_node_opts_by_path("/", &options); 159 unittest(np && !options, "option clearing root node test failed\n"); 160 of_node_put(np); 161 } 162 163 static void __init of_unittest_dynamic(void) 164 { 165 struct device_node *np; 166 struct property *prop; 167 168 np = of_find_node_by_path("/testcase-data"); 169 if (!np) { 170 pr_err("missing testcase data\n"); 171 return; 172 } 173 174 /* Array of 4 properties for the purpose of testing */ 175 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 176 if (!prop) { 177 unittest(0, "kzalloc() failed\n"); 178 return; 179 } 180 181 /* Add a new property - should pass*/ 182 prop->name = "new-property"; 183 prop->value = "new-property-data"; 184 prop->length = strlen(prop->value) + 1; 185 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 186 187 /* Try to add an existing property - should fail */ 188 prop++; 189 prop->name = "new-property"; 190 prop->value = "new-property-data-should-fail"; 191 prop->length = strlen(prop->value) + 1; 192 unittest(of_add_property(np, prop) != 0, 193 "Adding an existing property should have failed\n"); 194 195 /* Try to modify an existing property - should pass */ 196 prop->value = "modify-property-data-should-pass"; 197 prop->length = strlen(prop->value) + 1; 198 unittest(of_update_property(np, prop) == 0, 199 "Updating an existing property should have passed\n"); 200 201 /* Try to modify non-existent property - should pass*/ 202 prop++; 203 prop->name = "modify-property"; 204 prop->value = "modify-missing-property-data-should-pass"; 205 prop->length = strlen(prop->value) + 1; 206 unittest(of_update_property(np, prop) == 0, 207 "Updating a missing property should have passed\n"); 208 209 /* Remove property - should pass */ 210 unittest(of_remove_property(np, prop) == 0, 211 "Removing a property should have passed\n"); 212 213 /* Adding very large property - should pass */ 214 prop++; 215 prop->name = "large-property-PAGE_SIZEx8"; 216 prop->length = PAGE_SIZE * 8; 217 prop->value = kzalloc(prop->length, GFP_KERNEL); 218 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 219 if (prop->value) 220 unittest(of_add_property(np, prop) == 0, 221 "Adding a large property should have passed\n"); 222 } 223 224 static int __init of_unittest_check_node_linkage(struct device_node *np) 225 { 226 struct device_node *child; 227 int count = 0, rc; 228 229 for_each_child_of_node(np, child) { 230 if (child->parent != np) { 231 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 232 child, np); 233 rc = -EINVAL; 234 goto put_child; 235 } 236 237 rc = of_unittest_check_node_linkage(child); 238 if (rc < 0) 239 goto put_child; 240 count += rc; 241 } 242 243 return count + 1; 244 put_child: 245 of_node_put(child); 246 return rc; 247 } 248 249 static void __init of_unittest_check_tree_linkage(void) 250 { 251 struct device_node *np; 252 int allnode_count = 0, child_count; 253 254 if (!of_root) 255 return; 256 257 for_each_of_allnodes(np) 258 allnode_count++; 259 child_count = of_unittest_check_node_linkage(of_root); 260 261 unittest(child_count > 0, "Device node data structure is corrupted\n"); 262 unittest(child_count == allnode_count, 263 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 264 allnode_count, child_count); 265 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 266 } 267 268 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 269 const char *expected) 270 { 271 unsigned char *buf; 272 int buf_size; 273 int size, i; 274 275 buf_size = strlen(expected) + 10; 276 buf = kmalloc(buf_size, GFP_KERNEL); 277 if (!buf) 278 return; 279 280 /* Baseline; check conversion with a large size limit */ 281 memset(buf, 0xff, buf_size); 282 size = snprintf(buf, buf_size - 2, fmt, np); 283 284 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 285 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 286 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 287 fmt, expected, buf); 288 289 /* Make sure length limits work */ 290 size++; 291 for (i = 0; i < 2; i++, size--) { 292 /* Clear the buffer, and make sure it works correctly still */ 293 memset(buf, 0xff, buf_size); 294 snprintf(buf, size+1, fmt, np); 295 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 296 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 297 size, fmt, expected, buf); 298 } 299 kfree(buf); 300 } 301 302 static void __init of_unittest_printf(void) 303 { 304 struct device_node *np; 305 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 306 char phandle_str[16] = ""; 307 308 np = of_find_node_by_path(full_name); 309 if (!np) { 310 unittest(np, "testcase data missing\n"); 311 return; 312 } 313 314 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 315 316 of_unittest_printf_one(np, "%pOF", full_name); 317 of_unittest_printf_one(np, "%pOFf", full_name); 318 of_unittest_printf_one(np, "%pOFn", "dev"); 319 of_unittest_printf_one(np, "%2pOFn", "dev"); 320 of_unittest_printf_one(np, "%5pOFn", " dev"); 321 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 322 of_unittest_printf_one(np, "%pOFp", phandle_str); 323 of_unittest_printf_one(np, "%pOFP", "dev@100"); 324 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 325 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 326 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 327 of_unittest_printf_one(of_root, "%pOFP", "/"); 328 of_unittest_printf_one(np, "%pOFF", "----"); 329 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 330 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 331 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 332 of_unittest_printf_one(np, "%pOFC", 333 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 334 } 335 336 struct node_hash { 337 struct hlist_node node; 338 struct device_node *np; 339 }; 340 341 static DEFINE_HASHTABLE(phandle_ht, 8); 342 static void __init of_unittest_check_phandles(void) 343 { 344 struct device_node *np; 345 struct node_hash *nh; 346 struct hlist_node *tmp; 347 int i, dup_count = 0, phandle_count = 0; 348 349 for_each_of_allnodes(np) { 350 if (!np->phandle) 351 continue; 352 353 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 354 if (nh->np->phandle == np->phandle) { 355 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 356 np->phandle, nh->np, np); 357 dup_count++; 358 break; 359 } 360 } 361 362 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 363 if (!nh) 364 return; 365 366 nh->np = np; 367 hash_add(phandle_ht, &nh->node, np->phandle); 368 phandle_count++; 369 } 370 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 371 dup_count, phandle_count); 372 373 /* Clean up */ 374 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 375 hash_del(&nh->node); 376 kfree(nh); 377 } 378 } 379 380 static void __init of_unittest_parse_phandle_with_args(void) 381 { 382 struct device_node *np; 383 struct of_phandle_args args; 384 int i, rc; 385 386 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 387 if (!np) { 388 pr_err("missing testcase data\n"); 389 return; 390 } 391 392 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 393 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 394 395 for (i = 0; i < 8; i++) { 396 bool passed = true; 397 398 memset(&args, 0, sizeof(args)); 399 rc = of_parse_phandle_with_args(np, "phandle-list", 400 "#phandle-cells", i, &args); 401 402 /* Test the values from tests-phandle.dtsi */ 403 switch (i) { 404 case 0: 405 passed &= !rc; 406 passed &= (args.args_count == 1); 407 passed &= (args.args[0] == (i + 1)); 408 break; 409 case 1: 410 passed &= !rc; 411 passed &= (args.args_count == 2); 412 passed &= (args.args[0] == (i + 1)); 413 passed &= (args.args[1] == 0); 414 break; 415 case 2: 416 passed &= (rc == -ENOENT); 417 break; 418 case 3: 419 passed &= !rc; 420 passed &= (args.args_count == 3); 421 passed &= (args.args[0] == (i + 1)); 422 passed &= (args.args[1] == 4); 423 passed &= (args.args[2] == 3); 424 break; 425 case 4: 426 passed &= !rc; 427 passed &= (args.args_count == 2); 428 passed &= (args.args[0] == (i + 1)); 429 passed &= (args.args[1] == 100); 430 break; 431 case 5: 432 passed &= !rc; 433 passed &= (args.args_count == 0); 434 break; 435 case 6: 436 passed &= !rc; 437 passed &= (args.args_count == 1); 438 passed &= (args.args[0] == (i + 1)); 439 break; 440 case 7: 441 passed &= (rc == -ENOENT); 442 break; 443 default: 444 passed = false; 445 } 446 447 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 448 i, args.np, rc); 449 } 450 451 /* Check for missing list property */ 452 memset(&args, 0, sizeof(args)); 453 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 454 "#phandle-cells", 0, &args); 455 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 456 rc = of_count_phandle_with_args(np, "phandle-list-missing", 457 "#phandle-cells"); 458 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 459 460 /* Check for missing cells property */ 461 memset(&args, 0, sizeof(args)); 462 463 EXPECT_BEGIN(KERN_INFO, 464 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 465 466 rc = of_parse_phandle_with_args(np, "phandle-list", 467 "#phandle-cells-missing", 0, &args); 468 469 EXPECT_END(KERN_INFO, 470 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 471 472 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 473 474 EXPECT_BEGIN(KERN_INFO, 475 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 476 477 rc = of_count_phandle_with_args(np, "phandle-list", 478 "#phandle-cells-missing"); 479 480 EXPECT_END(KERN_INFO, 481 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 482 483 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 484 485 /* Check for bad phandle in list */ 486 memset(&args, 0, sizeof(args)); 487 488 EXPECT_BEGIN(KERN_INFO, 489 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 490 491 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 492 "#phandle-cells", 0, &args); 493 494 EXPECT_END(KERN_INFO, 495 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 496 497 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 498 499 EXPECT_BEGIN(KERN_INFO, 500 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 501 502 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 503 "#phandle-cells"); 504 505 EXPECT_END(KERN_INFO, 506 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 507 508 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 509 510 /* Check for incorrectly formed argument list */ 511 memset(&args, 0, sizeof(args)); 512 513 EXPECT_BEGIN(KERN_INFO, 514 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 515 516 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 517 "#phandle-cells", 1, &args); 518 519 EXPECT_END(KERN_INFO, 520 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 521 522 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 523 524 EXPECT_BEGIN(KERN_INFO, 525 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 526 527 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 528 "#phandle-cells"); 529 530 EXPECT_END(KERN_INFO, 531 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found -1"); 532 533 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 534 } 535 536 static void __init of_unittest_parse_phandle_with_args_map(void) 537 { 538 struct device_node *np, *p0, *p1, *p2, *p3; 539 struct of_phandle_args args; 540 int i, rc; 541 542 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 543 if (!np) { 544 pr_err("missing testcase data\n"); 545 return; 546 } 547 548 p0 = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 549 if (!p0) { 550 pr_err("missing testcase data\n"); 551 return; 552 } 553 554 p1 = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 555 if (!p1) { 556 pr_err("missing testcase data\n"); 557 return; 558 } 559 560 p2 = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 561 if (!p2) { 562 pr_err("missing testcase data\n"); 563 return; 564 } 565 566 p3 = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 567 if (!p3) { 568 pr_err("missing testcase data\n"); 569 return; 570 } 571 572 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 573 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 574 575 for (i = 0; i < 8; i++) { 576 bool passed = true; 577 578 memset(&args, 0, sizeof(args)); 579 rc = of_parse_phandle_with_args_map(np, "phandle-list", 580 "phandle", i, &args); 581 582 /* Test the values from tests-phandle.dtsi */ 583 switch (i) { 584 case 0: 585 passed &= !rc; 586 passed &= (args.np == p1); 587 passed &= (args.args_count == 1); 588 passed &= (args.args[0] == 1); 589 break; 590 case 1: 591 passed &= !rc; 592 passed &= (args.np == p3); 593 passed &= (args.args_count == 3); 594 passed &= (args.args[0] == 2); 595 passed &= (args.args[1] == 5); 596 passed &= (args.args[2] == 3); 597 break; 598 case 2: 599 passed &= (rc == -ENOENT); 600 break; 601 case 3: 602 passed &= !rc; 603 passed &= (args.np == p0); 604 passed &= (args.args_count == 0); 605 break; 606 case 4: 607 passed &= !rc; 608 passed &= (args.np == p1); 609 passed &= (args.args_count == 1); 610 passed &= (args.args[0] == 3); 611 break; 612 case 5: 613 passed &= !rc; 614 passed &= (args.np == p0); 615 passed &= (args.args_count == 0); 616 break; 617 case 6: 618 passed &= !rc; 619 passed &= (args.np == p2); 620 passed &= (args.args_count == 2); 621 passed &= (args.args[0] == 15); 622 passed &= (args.args[1] == 0x20); 623 break; 624 case 7: 625 passed &= (rc == -ENOENT); 626 break; 627 default: 628 passed = false; 629 } 630 631 unittest(passed, "index %i - data error on node %s rc=%i\n", 632 i, args.np->full_name, rc); 633 } 634 635 /* Check for missing list property */ 636 memset(&args, 0, sizeof(args)); 637 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 638 "phandle", 0, &args); 639 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 640 641 /* Check for missing cells,map,mask property */ 642 memset(&args, 0, sizeof(args)); 643 644 EXPECT_BEGIN(KERN_INFO, 645 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 646 647 rc = of_parse_phandle_with_args_map(np, "phandle-list", 648 "phandle-missing", 0, &args); 649 EXPECT_END(KERN_INFO, 650 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 651 652 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 653 654 /* Check for bad phandle in list */ 655 memset(&args, 0, sizeof(args)); 656 657 EXPECT_BEGIN(KERN_INFO, 658 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 659 660 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 661 "phandle", 0, &args); 662 EXPECT_END(KERN_INFO, 663 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle"); 664 665 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 666 667 /* Check for incorrectly formed argument list */ 668 memset(&args, 0, sizeof(args)); 669 670 EXPECT_BEGIN(KERN_INFO, 671 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 672 673 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 674 "phandle", 1, &args); 675 EXPECT_END(KERN_INFO, 676 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1"); 677 678 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 679 } 680 681 static void __init of_unittest_property_string(void) 682 { 683 const char *strings[4]; 684 struct device_node *np; 685 int rc; 686 687 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 688 if (!np) { 689 pr_err("No testcase data in device tree\n"); 690 return; 691 } 692 693 rc = of_property_match_string(np, "phandle-list-names", "first"); 694 unittest(rc == 0, "first expected:0 got:%i\n", rc); 695 rc = of_property_match_string(np, "phandle-list-names", "second"); 696 unittest(rc == 1, "second expected:1 got:%i\n", rc); 697 rc = of_property_match_string(np, "phandle-list-names", "third"); 698 unittest(rc == 2, "third expected:2 got:%i\n", rc); 699 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 700 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 701 rc = of_property_match_string(np, "missing-property", "blah"); 702 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 703 rc = of_property_match_string(np, "empty-property", "blah"); 704 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 705 rc = of_property_match_string(np, "unterminated-string", "blah"); 706 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 707 708 /* of_property_count_strings() tests */ 709 rc = of_property_count_strings(np, "string-property"); 710 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 711 rc = of_property_count_strings(np, "phandle-list-names"); 712 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 713 rc = of_property_count_strings(np, "unterminated-string"); 714 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 715 rc = of_property_count_strings(np, "unterminated-string-list"); 716 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 717 718 /* of_property_read_string_index() tests */ 719 rc = of_property_read_string_index(np, "string-property", 0, strings); 720 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 721 strings[0] = NULL; 722 rc = of_property_read_string_index(np, "string-property", 1, strings); 723 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 724 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 725 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 726 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 727 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 728 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 729 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 730 strings[0] = NULL; 731 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 732 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 733 strings[0] = NULL; 734 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 735 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 736 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 737 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 738 strings[0] = NULL; 739 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 740 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 741 strings[1] = NULL; 742 743 /* of_property_read_string_array() tests */ 744 rc = of_property_read_string_array(np, "string-property", strings, 4); 745 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 746 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 747 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 748 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 749 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 750 /* -- An incorrectly formed string should cause a failure */ 751 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 752 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 753 /* -- parsing the correctly formed strings should still work: */ 754 strings[2] = NULL; 755 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 756 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 757 strings[1] = NULL; 758 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 759 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 760 } 761 762 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 763 (p1)->value && (p2)->value && \ 764 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 765 !strcmp((p1)->name, (p2)->name)) 766 static void __init of_unittest_property_copy(void) 767 { 768 #ifdef CONFIG_OF_DYNAMIC 769 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 770 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 771 struct property *new; 772 773 new = __of_prop_dup(&p1, GFP_KERNEL); 774 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 775 kfree(new->value); 776 kfree(new->name); 777 kfree(new); 778 779 new = __of_prop_dup(&p2, GFP_KERNEL); 780 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 781 kfree(new->value); 782 kfree(new->name); 783 kfree(new); 784 #endif 785 } 786 787 static void __init of_unittest_changeset(void) 788 { 789 #ifdef CONFIG_OF_DYNAMIC 790 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 791 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 792 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 793 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 794 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 795 struct property *ppremove; 796 struct device_node *n1, *n2, *n21, *nchangeset, *nremove, *parent, *np; 797 struct of_changeset chgset; 798 799 n1 = __of_node_dup(NULL, "n1"); 800 unittest(n1, "testcase setup failure\n"); 801 802 n2 = __of_node_dup(NULL, "n2"); 803 unittest(n2, "testcase setup failure\n"); 804 805 n21 = __of_node_dup(NULL, "n21"); 806 unittest(n21, "testcase setup failure %p\n", n21); 807 808 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 809 nremove = of_get_child_by_name(nchangeset, "node-remove"); 810 unittest(nremove, "testcase setup failure\n"); 811 812 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 813 unittest(ppadd, "testcase setup failure\n"); 814 815 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 816 unittest(ppname_n1, "testcase setup failure\n"); 817 818 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 819 unittest(ppname_n2, "testcase setup failure\n"); 820 821 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 822 unittest(ppname_n21, "testcase setup failure\n"); 823 824 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 825 unittest(ppupdate, "testcase setup failure\n"); 826 827 parent = nchangeset; 828 n1->parent = parent; 829 n2->parent = parent; 830 n21->parent = n2; 831 832 ppremove = of_find_property(parent, "prop-remove", NULL); 833 unittest(ppremove, "failed to find removal prop"); 834 835 of_changeset_init(&chgset); 836 837 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 838 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 839 840 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 841 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 842 843 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 844 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 845 846 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 847 848 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 849 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 850 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 851 852 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 853 854 of_node_put(nchangeset); 855 856 /* Make sure node names are constructed correctly */ 857 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 858 "'%pOF' not added\n", n21); 859 of_node_put(np); 860 861 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 862 863 of_changeset_destroy(&chgset); 864 #endif 865 } 866 867 static void __init of_unittest_dma_ranges_one(const char *path, 868 u64 expect_dma_addr, u64 expect_paddr, u64 expect_size) 869 { 870 struct device_node *np; 871 u64 dma_addr, paddr, size; 872 int rc; 873 874 np = of_find_node_by_path(path); 875 if (!np) { 876 pr_err("missing testcase data\n"); 877 return; 878 } 879 880 rc = of_dma_get_range(np, &dma_addr, &paddr, &size); 881 882 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 883 if (!rc) { 884 unittest(size == expect_size, 885 "of_dma_get_range wrong size on node %pOF size=%llx\n", np, size); 886 unittest(paddr == expect_paddr, 887 "of_dma_get_range wrong phys addr (%llx) on node %pOF", paddr, np); 888 unittest(dma_addr == expect_dma_addr, 889 "of_dma_get_range wrong DMA addr (%llx) on node %pOF", dma_addr, np); 890 } 891 of_node_put(np); 892 } 893 894 static void __init of_unittest_parse_dma_ranges(void) 895 { 896 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 897 0x0, 0x20000000, 0x40000000); 898 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 899 0x10000000, 0x20000000, 0x40000000); 900 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 901 0x80000000, 0x20000000, 0x10000000); 902 } 903 904 static void __init of_unittest_pci_dma_ranges(void) 905 { 906 struct device_node *np; 907 struct of_pci_range range; 908 struct of_pci_range_parser parser; 909 int i = 0; 910 911 if (!IS_ENABLED(CONFIG_PCI)) 912 return; 913 914 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 915 if (!np) { 916 pr_err("missing testcase data\n"); 917 return; 918 } 919 920 if (of_pci_dma_range_parser_init(&parser, np)) { 921 pr_err("missing dma-ranges property\n"); 922 return; 923 } 924 925 /* 926 * Get the dma-ranges from the device tree 927 */ 928 for_each_of_pci_range(&parser, &range) { 929 if (!i) { 930 unittest(range.size == 0x10000000, 931 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 932 np, range.size); 933 unittest(range.cpu_addr == 0x20000000, 934 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 935 range.cpu_addr, np); 936 unittest(range.pci_addr == 0x80000000, 937 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 938 range.pci_addr, np); 939 } else { 940 unittest(range.size == 0x10000000, 941 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 942 np, range.size); 943 unittest(range.cpu_addr == 0x40000000, 944 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 945 range.cpu_addr, np); 946 unittest(range.pci_addr == 0xc0000000, 947 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 948 range.pci_addr, np); 949 } 950 i++; 951 } 952 953 of_node_put(np); 954 } 955 956 static void __init of_unittest_parse_interrupts(void) 957 { 958 struct device_node *np; 959 struct of_phandle_args args; 960 int i, rc; 961 962 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 963 return; 964 965 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 966 if (!np) { 967 pr_err("missing testcase data\n"); 968 return; 969 } 970 971 for (i = 0; i < 4; i++) { 972 bool passed = true; 973 974 memset(&args, 0, sizeof(args)); 975 rc = of_irq_parse_one(np, i, &args); 976 977 passed &= !rc; 978 passed &= (args.args_count == 1); 979 passed &= (args.args[0] == (i + 1)); 980 981 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 982 i, args.np, rc); 983 } 984 of_node_put(np); 985 986 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 987 if (!np) { 988 pr_err("missing testcase data\n"); 989 return; 990 } 991 992 for (i = 0; i < 4; i++) { 993 bool passed = true; 994 995 memset(&args, 0, sizeof(args)); 996 rc = of_irq_parse_one(np, i, &args); 997 998 /* Test the values from tests-phandle.dtsi */ 999 switch (i) { 1000 case 0: 1001 passed &= !rc; 1002 passed &= (args.args_count == 1); 1003 passed &= (args.args[0] == 9); 1004 break; 1005 case 1: 1006 passed &= !rc; 1007 passed &= (args.args_count == 3); 1008 passed &= (args.args[0] == 10); 1009 passed &= (args.args[1] == 11); 1010 passed &= (args.args[2] == 12); 1011 break; 1012 case 2: 1013 passed &= !rc; 1014 passed &= (args.args_count == 2); 1015 passed &= (args.args[0] == 13); 1016 passed &= (args.args[1] == 14); 1017 break; 1018 case 3: 1019 passed &= !rc; 1020 passed &= (args.args_count == 2); 1021 passed &= (args.args[0] == 15); 1022 passed &= (args.args[1] == 16); 1023 break; 1024 default: 1025 passed = false; 1026 } 1027 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1028 i, args.np, rc); 1029 } 1030 of_node_put(np); 1031 } 1032 1033 static void __init of_unittest_parse_interrupts_extended(void) 1034 { 1035 struct device_node *np; 1036 struct of_phandle_args args; 1037 int i, rc; 1038 1039 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1040 return; 1041 1042 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1043 if (!np) { 1044 pr_err("missing testcase data\n"); 1045 return; 1046 } 1047 1048 for (i = 0; i < 7; i++) { 1049 bool passed = true; 1050 1051 memset(&args, 0, sizeof(args)); 1052 rc = of_irq_parse_one(np, i, &args); 1053 1054 /* Test the values from tests-phandle.dtsi */ 1055 switch (i) { 1056 case 0: 1057 passed &= !rc; 1058 passed &= (args.args_count == 1); 1059 passed &= (args.args[0] == 1); 1060 break; 1061 case 1: 1062 passed &= !rc; 1063 passed &= (args.args_count == 3); 1064 passed &= (args.args[0] == 2); 1065 passed &= (args.args[1] == 3); 1066 passed &= (args.args[2] == 4); 1067 break; 1068 case 2: 1069 passed &= !rc; 1070 passed &= (args.args_count == 2); 1071 passed &= (args.args[0] == 5); 1072 passed &= (args.args[1] == 6); 1073 break; 1074 case 3: 1075 passed &= !rc; 1076 passed &= (args.args_count == 1); 1077 passed &= (args.args[0] == 9); 1078 break; 1079 case 4: 1080 passed &= !rc; 1081 passed &= (args.args_count == 3); 1082 passed &= (args.args[0] == 10); 1083 passed &= (args.args[1] == 11); 1084 passed &= (args.args[2] == 12); 1085 break; 1086 case 5: 1087 passed &= !rc; 1088 passed &= (args.args_count == 2); 1089 passed &= (args.args[0] == 13); 1090 passed &= (args.args[1] == 14); 1091 break; 1092 case 6: 1093 passed &= !rc; 1094 passed &= (args.args_count == 1); 1095 passed &= (args.args[0] == 15); 1096 break; 1097 default: 1098 passed = false; 1099 } 1100 1101 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1102 i, args.np, rc); 1103 } 1104 of_node_put(np); 1105 } 1106 1107 static const struct of_device_id match_node_table[] = { 1108 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1109 { .data = "B", .type = "type1", }, /* followed by type alone */ 1110 1111 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1112 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1113 { .data = "Cc", .name = "name2", .type = "type2", }, 1114 1115 { .data = "E", .compatible = "compat3" }, 1116 { .data = "G", .compatible = "compat2", }, 1117 { .data = "H", .compatible = "compat2", .name = "name5", }, 1118 { .data = "I", .compatible = "compat2", .type = "type1", }, 1119 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1120 { .data = "K", .compatible = "compat2", .name = "name9", }, 1121 {} 1122 }; 1123 1124 static struct { 1125 const char *path; 1126 const char *data; 1127 } match_node_tests[] = { 1128 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1129 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1130 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1131 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1132 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1133 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1134 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1135 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1136 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1137 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1138 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1139 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1140 }; 1141 1142 static void __init of_unittest_match_node(void) 1143 { 1144 struct device_node *np; 1145 const struct of_device_id *match; 1146 int i; 1147 1148 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1149 np = of_find_node_by_path(match_node_tests[i].path); 1150 if (!np) { 1151 unittest(0, "missing testcase node %s\n", 1152 match_node_tests[i].path); 1153 continue; 1154 } 1155 1156 match = of_match_node(match_node_table, np); 1157 if (!match) { 1158 unittest(0, "%s didn't match anything\n", 1159 match_node_tests[i].path); 1160 continue; 1161 } 1162 1163 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1164 unittest(0, "%s got wrong match. expected %s, got %s\n", 1165 match_node_tests[i].path, match_node_tests[i].data, 1166 (const char *)match->data); 1167 continue; 1168 } 1169 unittest(1, "passed"); 1170 } 1171 } 1172 1173 static struct resource test_bus_res = { 1174 .start = 0xfffffff8, 1175 .end = 0xfffffff9, 1176 .flags = IORESOURCE_MEM, 1177 }; 1178 static const struct platform_device_info test_bus_info = { 1179 .name = "unittest-bus", 1180 }; 1181 static void __init of_unittest_platform_populate(void) 1182 { 1183 int irq, rc; 1184 struct device_node *np, *child, *grandchild; 1185 struct platform_device *pdev, *test_bus; 1186 const struct of_device_id match[] = { 1187 { .compatible = "test-device", }, 1188 {} 1189 }; 1190 1191 np = of_find_node_by_path("/testcase-data"); 1192 of_platform_default_populate(np, NULL, NULL); 1193 1194 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1195 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1196 pdev = of_find_device_by_node(np); 1197 unittest(pdev, "device 1 creation failed\n"); 1198 1199 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1200 irq = platform_get_irq(pdev, 0); 1201 unittest(irq == -EPROBE_DEFER, 1202 "device deferred probe failed - %d\n", irq); 1203 1204 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1205 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1206 pdev = of_find_device_by_node(np); 1207 unittest(pdev, "device 2 creation failed\n"); 1208 1209 EXPECT_BEGIN(KERN_INFO, 1210 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1211 1212 irq = platform_get_irq(pdev, 0); 1213 1214 EXPECT_END(KERN_INFO, 1215 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1216 1217 unittest(irq < 0 && irq != -EPROBE_DEFER, 1218 "device parsing error failed - %d\n", irq); 1219 } 1220 1221 np = of_find_node_by_path("/testcase-data/platform-tests"); 1222 unittest(np, "No testcase data in device tree\n"); 1223 if (!np) 1224 return; 1225 1226 test_bus = platform_device_register_full(&test_bus_info); 1227 rc = PTR_ERR_OR_ZERO(test_bus); 1228 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1229 if (rc) { 1230 of_node_put(np); 1231 return; 1232 } 1233 test_bus->dev.of_node = np; 1234 1235 /* 1236 * Add a dummy resource to the test bus node after it is 1237 * registered to catch problems with un-inserted resources. The 1238 * DT code doesn't insert the resources, and it has caused the 1239 * kernel to oops in the past. This makes sure the same bug 1240 * doesn't crop up again. 1241 */ 1242 platform_device_add_resources(test_bus, &test_bus_res, 1); 1243 1244 of_platform_populate(np, match, NULL, &test_bus->dev); 1245 for_each_child_of_node(np, child) { 1246 for_each_child_of_node(child, grandchild) 1247 unittest(of_find_device_by_node(grandchild), 1248 "Could not create device for node '%pOFn'\n", 1249 grandchild); 1250 } 1251 1252 of_platform_depopulate(&test_bus->dev); 1253 for_each_child_of_node(np, child) { 1254 for_each_child_of_node(child, grandchild) 1255 unittest(!of_find_device_by_node(grandchild), 1256 "device didn't get destroyed '%pOFn'\n", 1257 grandchild); 1258 } 1259 1260 platform_device_unregister(test_bus); 1261 of_node_put(np); 1262 } 1263 1264 /** 1265 * update_node_properties - adds the properties 1266 * of np into dup node (present in live tree) and 1267 * updates parent of children of np to dup. 1268 * 1269 * @np: node whose properties are being added to the live tree 1270 * @dup: node present in live tree to be updated 1271 */ 1272 static void update_node_properties(struct device_node *np, 1273 struct device_node *dup) 1274 { 1275 struct property *prop; 1276 struct property *save_next; 1277 struct device_node *child; 1278 int ret; 1279 1280 for_each_child_of_node(np, child) 1281 child->parent = dup; 1282 1283 /* 1284 * "unittest internal error: unable to add testdata property" 1285 * 1286 * If this message reports a property in node '/__symbols__' then 1287 * the respective unittest overlay contains a label that has the 1288 * same name as a label in the live devicetree. The label will 1289 * be in the live devicetree only if the devicetree source was 1290 * compiled with the '-@' option. If you encounter this error, 1291 * please consider renaming __all__ of the labels in the unittest 1292 * overlay dts files with an odd prefix that is unlikely to be 1293 * used in a real devicetree. 1294 */ 1295 1296 /* 1297 * open code for_each_property_of_node() because of_add_property() 1298 * sets prop->next to NULL 1299 */ 1300 for (prop = np->properties; prop != NULL; prop = save_next) { 1301 save_next = prop->next; 1302 ret = of_add_property(dup, prop); 1303 if (ret) { 1304 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1305 continue; 1306 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1307 np, prop->name); 1308 } 1309 } 1310 } 1311 1312 /** 1313 * attach_node_and_children - attaches nodes 1314 * and its children to live tree. 1315 * CAUTION: misleading function name - if node @np already exists in 1316 * the live tree then children of @np are *not* attached to the live 1317 * tree. This works for the current test devicetree nodes because such 1318 * nodes do not have child nodes. 1319 * 1320 * @np: Node to attach to live tree 1321 */ 1322 static void attach_node_and_children(struct device_node *np) 1323 { 1324 struct device_node *next, *dup, *child; 1325 unsigned long flags; 1326 const char *full_name; 1327 1328 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1329 1330 if (!strcmp(full_name, "/__local_fixups__") || 1331 !strcmp(full_name, "/__fixups__")) { 1332 kfree(full_name); 1333 return; 1334 } 1335 1336 dup = of_find_node_by_path(full_name); 1337 kfree(full_name); 1338 if (dup) { 1339 update_node_properties(np, dup); 1340 return; 1341 } 1342 1343 child = np->child; 1344 np->child = NULL; 1345 1346 mutex_lock(&of_mutex); 1347 raw_spin_lock_irqsave(&devtree_lock, flags); 1348 np->sibling = np->parent->child; 1349 np->parent->child = np; 1350 of_node_clear_flag(np, OF_DETACHED); 1351 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1352 1353 __of_attach_node_sysfs(np); 1354 mutex_unlock(&of_mutex); 1355 1356 while (child) { 1357 next = child->sibling; 1358 attach_node_and_children(child); 1359 child = next; 1360 } 1361 } 1362 1363 /** 1364 * unittest_data_add - Reads, copies data from 1365 * linked tree and attaches it to the live tree 1366 */ 1367 static int __init unittest_data_add(void) 1368 { 1369 void *unittest_data; 1370 struct device_node *unittest_data_node, *np; 1371 /* 1372 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1373 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1374 */ 1375 extern uint8_t __dtb_testcases_begin[]; 1376 extern uint8_t __dtb_testcases_end[]; 1377 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1378 int rc; 1379 1380 if (!size) { 1381 pr_warn("%s: No testcase data to attach; not running tests\n", 1382 __func__); 1383 return -ENODATA; 1384 } 1385 1386 /* creating copy */ 1387 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); 1388 if (!unittest_data) 1389 return -ENOMEM; 1390 1391 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node); 1392 if (!unittest_data_node) { 1393 pr_warn("%s: No tree to attach; not running tests\n", __func__); 1394 kfree(unittest_data); 1395 return -ENODATA; 1396 } 1397 1398 /* 1399 * This lock normally encloses of_resolve_phandles() 1400 */ 1401 of_overlay_mutex_lock(); 1402 1403 rc = of_resolve_phandles(unittest_data_node); 1404 if (rc) { 1405 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1406 of_overlay_mutex_unlock(); 1407 return -EINVAL; 1408 } 1409 1410 if (!of_root) { 1411 of_root = unittest_data_node; 1412 for_each_of_allnodes(np) 1413 __of_attach_node_sysfs(np); 1414 of_aliases = of_find_node_by_path("/aliases"); 1415 of_chosen = of_find_node_by_path("/chosen"); 1416 of_overlay_mutex_unlock(); 1417 return 0; 1418 } 1419 1420 EXPECT_BEGIN(KERN_INFO, 1421 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1422 1423 /* attach the sub-tree to live tree */ 1424 np = unittest_data_node->child; 1425 while (np) { 1426 struct device_node *next = np->sibling; 1427 1428 np->parent = of_root; 1429 attach_node_and_children(np); 1430 np = next; 1431 } 1432 1433 EXPECT_END(KERN_INFO, 1434 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1435 1436 of_overlay_mutex_unlock(); 1437 1438 return 0; 1439 } 1440 1441 #ifdef CONFIG_OF_OVERLAY 1442 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1443 1444 static int unittest_probe(struct platform_device *pdev) 1445 { 1446 struct device *dev = &pdev->dev; 1447 struct device_node *np = dev->of_node; 1448 1449 if (np == NULL) { 1450 dev_err(dev, "No OF data for device\n"); 1451 return -EINVAL; 1452 1453 } 1454 1455 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1456 1457 of_platform_populate(np, NULL, NULL, &pdev->dev); 1458 1459 return 0; 1460 } 1461 1462 static int unittest_remove(struct platform_device *pdev) 1463 { 1464 struct device *dev = &pdev->dev; 1465 struct device_node *np = dev->of_node; 1466 1467 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1468 return 0; 1469 } 1470 1471 static const struct of_device_id unittest_match[] = { 1472 { .compatible = "unittest", }, 1473 {}, 1474 }; 1475 1476 static struct platform_driver unittest_driver = { 1477 .probe = unittest_probe, 1478 .remove = unittest_remove, 1479 .driver = { 1480 .name = "unittest", 1481 .of_match_table = of_match_ptr(unittest_match), 1482 }, 1483 }; 1484 1485 /* get the platform device instantiated at the path */ 1486 static struct platform_device *of_path_to_platform_device(const char *path) 1487 { 1488 struct device_node *np; 1489 struct platform_device *pdev; 1490 1491 np = of_find_node_by_path(path); 1492 if (np == NULL) 1493 return NULL; 1494 1495 pdev = of_find_device_by_node(np); 1496 of_node_put(np); 1497 1498 return pdev; 1499 } 1500 1501 /* find out if a platform device exists at that path */ 1502 static int of_path_platform_device_exists(const char *path) 1503 { 1504 struct platform_device *pdev; 1505 1506 pdev = of_path_to_platform_device(path); 1507 platform_device_put(pdev); 1508 return pdev != NULL; 1509 } 1510 1511 #ifdef CONFIG_OF_GPIO 1512 1513 struct unittest_gpio_dev { 1514 struct gpio_chip chip; 1515 }; 1516 1517 static int unittest_gpio_chip_request_count; 1518 static int unittest_gpio_probe_count; 1519 static int unittest_gpio_probe_pass_count; 1520 1521 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1522 { 1523 unittest_gpio_chip_request_count++; 1524 1525 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1526 unittest_gpio_chip_request_count); 1527 return 0; 1528 } 1529 1530 static int unittest_gpio_probe(struct platform_device *pdev) 1531 { 1532 struct unittest_gpio_dev *devptr; 1533 int ret; 1534 1535 unittest_gpio_probe_count++; 1536 1537 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1538 if (!devptr) 1539 return -ENOMEM; 1540 1541 platform_set_drvdata(pdev, devptr); 1542 1543 devptr->chip.of_node = pdev->dev.of_node; 1544 devptr->chip.label = "of-unittest-gpio"; 1545 devptr->chip.base = -1; /* dynamic allocation */ 1546 devptr->chip.ngpio = 5; 1547 devptr->chip.request = unittest_gpio_chip_request; 1548 1549 ret = gpiochip_add_data(&devptr->chip, NULL); 1550 1551 unittest(!ret, 1552 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1553 1554 if (!ret) 1555 unittest_gpio_probe_pass_count++; 1556 return ret; 1557 } 1558 1559 static int unittest_gpio_remove(struct platform_device *pdev) 1560 { 1561 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1562 struct device *dev = &pdev->dev; 1563 struct device_node *np = pdev->dev.of_node; 1564 1565 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1566 1567 if (!gdev) 1568 return -EINVAL; 1569 1570 if (gdev->chip.base != -1) 1571 gpiochip_remove(&gdev->chip); 1572 1573 platform_set_drvdata(pdev, NULL); 1574 kfree(pdev); 1575 1576 return 0; 1577 } 1578 1579 static const struct of_device_id unittest_gpio_id[] = { 1580 { .compatible = "unittest-gpio", }, 1581 {} 1582 }; 1583 1584 static struct platform_driver unittest_gpio_driver = { 1585 .probe = unittest_gpio_probe, 1586 .remove = unittest_gpio_remove, 1587 .driver = { 1588 .name = "unittest-gpio", 1589 .of_match_table = of_match_ptr(unittest_gpio_id), 1590 }, 1591 }; 1592 1593 static void __init of_unittest_overlay_gpio(void) 1594 { 1595 int chip_request_count; 1596 int probe_pass_count; 1597 int ret; 1598 1599 /* 1600 * tests: apply overlays before registering driver 1601 * Similar to installing a driver as a module, the 1602 * driver is registered after applying the overlays. 1603 * 1604 * - apply overlay_gpio_01 1605 * - apply overlay_gpio_02a 1606 * - apply overlay_gpio_02b 1607 * - register driver 1608 * 1609 * register driver will result in 1610 * - probe and processing gpio hog for overlay_gpio_01 1611 * - probe for overlay_gpio_02a 1612 * - processing gpio for overlay_gpio_02b 1613 */ 1614 1615 probe_pass_count = unittest_gpio_probe_pass_count; 1616 chip_request_count = unittest_gpio_chip_request_count; 1617 1618 /* 1619 * overlay_gpio_01 contains gpio node and child gpio hog node 1620 * overlay_gpio_02a contains gpio node 1621 * overlay_gpio_02b contains child gpio hog node 1622 */ 1623 1624 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1625 "Adding overlay 'overlay_gpio_01' failed\n"); 1626 1627 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1628 "Adding overlay 'overlay_gpio_02a' failed\n"); 1629 1630 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1631 "Adding overlay 'overlay_gpio_02b' failed\n"); 1632 1633 /* 1634 * messages are the result of the probes, after the 1635 * driver is registered 1636 */ 1637 1638 EXPECT_BEGIN(KERN_INFO, 1639 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1640 1641 EXPECT_BEGIN(KERN_INFO, 1642 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1643 1644 ret = platform_driver_register(&unittest_gpio_driver); 1645 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1646 return; 1647 1648 EXPECT_END(KERN_INFO, 1649 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1650 EXPECT_END(KERN_INFO, 1651 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1652 1653 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1654 "unittest_gpio_probe() failed or not called\n"); 1655 1656 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1657 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1658 unittest_gpio_chip_request_count - chip_request_count); 1659 1660 /* 1661 * tests: apply overlays after registering driver 1662 * 1663 * Similar to a driver built-in to the kernel, the 1664 * driver is registered before applying the overlays. 1665 * 1666 * overlay_gpio_03 contains gpio node and child gpio hog node 1667 * 1668 * - apply overlay_gpio_03 1669 * 1670 * apply overlay will result in 1671 * - probe and processing gpio hog. 1672 */ 1673 1674 probe_pass_count = unittest_gpio_probe_pass_count; 1675 chip_request_count = unittest_gpio_chip_request_count; 1676 1677 EXPECT_BEGIN(KERN_INFO, 1678 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1679 1680 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1681 1682 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1683 "Adding overlay 'overlay_gpio_03' failed\n"); 1684 1685 EXPECT_END(KERN_INFO, 1686 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1687 1688 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1689 "unittest_gpio_probe() failed or not called\n"); 1690 1691 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1692 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1693 unittest_gpio_chip_request_count - chip_request_count); 1694 1695 /* 1696 * overlay_gpio_04a contains gpio node 1697 * 1698 * - apply overlay_gpio_04a 1699 * 1700 * apply the overlay will result in 1701 * - probe for overlay_gpio_04a 1702 */ 1703 1704 probe_pass_count = unittest_gpio_probe_pass_count; 1705 chip_request_count = unittest_gpio_chip_request_count; 1706 1707 /* overlay_gpio_04a contains gpio node */ 1708 1709 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1710 "Adding overlay 'overlay_gpio_04a' failed\n"); 1711 1712 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1713 "unittest_gpio_probe() failed or not called\n"); 1714 1715 /* 1716 * overlay_gpio_04b contains child gpio hog node 1717 * 1718 * - apply overlay_gpio_04b 1719 * 1720 * apply the overlay will result in 1721 * - processing gpio for overlay_gpio_04b 1722 */ 1723 1724 EXPECT_BEGIN(KERN_INFO, 1725 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1726 1727 /* overlay_gpio_04b contains child gpio hog node */ 1728 1729 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1730 "Adding overlay 'overlay_gpio_04b' failed\n"); 1731 1732 EXPECT_END(KERN_INFO, 1733 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1734 1735 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1736 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1737 unittest_gpio_chip_request_count - chip_request_count); 1738 } 1739 1740 #else 1741 1742 static void __init of_unittest_overlay_gpio(void) 1743 { 1744 /* skip tests */ 1745 } 1746 1747 #endif 1748 1749 #if IS_BUILTIN(CONFIG_I2C) 1750 1751 /* get the i2c client device instantiated at the path */ 1752 static struct i2c_client *of_path_to_i2c_client(const char *path) 1753 { 1754 struct device_node *np; 1755 struct i2c_client *client; 1756 1757 np = of_find_node_by_path(path); 1758 if (np == NULL) 1759 return NULL; 1760 1761 client = of_find_i2c_device_by_node(np); 1762 of_node_put(np); 1763 1764 return client; 1765 } 1766 1767 /* find out if a i2c client device exists at that path */ 1768 static int of_path_i2c_client_exists(const char *path) 1769 { 1770 struct i2c_client *client; 1771 1772 client = of_path_to_i2c_client(path); 1773 if (client) 1774 put_device(&client->dev); 1775 return client != NULL; 1776 } 1777 #else 1778 static int of_path_i2c_client_exists(const char *path) 1779 { 1780 return 0; 1781 } 1782 #endif 1783 1784 enum overlay_type { 1785 PDEV_OVERLAY, 1786 I2C_OVERLAY 1787 }; 1788 1789 static int of_path_device_type_exists(const char *path, 1790 enum overlay_type ovtype) 1791 { 1792 switch (ovtype) { 1793 case PDEV_OVERLAY: 1794 return of_path_platform_device_exists(path); 1795 case I2C_OVERLAY: 1796 return of_path_i2c_client_exists(path); 1797 } 1798 return 0; 1799 } 1800 1801 static const char *unittest_path(int nr, enum overlay_type ovtype) 1802 { 1803 const char *base; 1804 static char buf[256]; 1805 1806 switch (ovtype) { 1807 case PDEV_OVERLAY: 1808 base = "/testcase-data/overlay-node/test-bus"; 1809 break; 1810 case I2C_OVERLAY: 1811 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1812 break; 1813 default: 1814 buf[0] = '\0'; 1815 return buf; 1816 } 1817 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1818 buf[sizeof(buf) - 1] = '\0'; 1819 return buf; 1820 } 1821 1822 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1823 { 1824 const char *path; 1825 1826 path = unittest_path(unittest_nr, ovtype); 1827 1828 switch (ovtype) { 1829 case PDEV_OVERLAY: 1830 return of_path_platform_device_exists(path); 1831 case I2C_OVERLAY: 1832 return of_path_i2c_client_exists(path); 1833 } 1834 return 0; 1835 } 1836 1837 static const char *overlay_name_from_nr(int nr) 1838 { 1839 static char buf[256]; 1840 1841 snprintf(buf, sizeof(buf) - 1, 1842 "overlay_%d", nr); 1843 buf[sizeof(buf) - 1] = '\0'; 1844 1845 return buf; 1846 } 1847 1848 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1849 1850 /* it is guaranteed that overlay ids are assigned in sequence */ 1851 #define MAX_UNITTEST_OVERLAYS 256 1852 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1853 static int overlay_first_id = -1; 1854 1855 static void of_unittest_track_overlay(int id) 1856 { 1857 if (overlay_first_id < 0) 1858 overlay_first_id = id; 1859 id -= overlay_first_id; 1860 1861 /* we shouldn't need that many */ 1862 BUG_ON(id >= MAX_UNITTEST_OVERLAYS); 1863 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1864 } 1865 1866 static void of_unittest_untrack_overlay(int id) 1867 { 1868 if (overlay_first_id < 0) 1869 return; 1870 id -= overlay_first_id; 1871 BUG_ON(id >= MAX_UNITTEST_OVERLAYS); 1872 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1873 } 1874 1875 static void of_unittest_destroy_tracked_overlays(void) 1876 { 1877 int id, ret, defers, ovcs_id; 1878 1879 if (overlay_first_id < 0) 1880 return; 1881 1882 /* try until no defers */ 1883 do { 1884 defers = 0; 1885 /* remove in reverse order */ 1886 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1887 if (!(overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id))) 1888 continue; 1889 1890 ovcs_id = id + overlay_first_id; 1891 ret = of_overlay_remove(&ovcs_id); 1892 if (ret == -ENODEV) { 1893 pr_warn("%s: no overlay to destroy for #%d\n", 1894 __func__, id + overlay_first_id); 1895 continue; 1896 } 1897 if (ret != 0) { 1898 defers++; 1899 pr_warn("%s: overlay destroy failed for #%d\n", 1900 __func__, id + overlay_first_id); 1901 continue; 1902 } 1903 1904 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1905 } 1906 } while (defers > 0); 1907 } 1908 1909 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1910 { 1911 const char *overlay_name; 1912 1913 overlay_name = overlay_name_from_nr(overlay_nr); 1914 1915 if (!overlay_data_apply(overlay_name, overlay_id)) { 1916 unittest(0, "could not apply overlay \"%s\"\n", 1917 overlay_name); 1918 return -EFAULT; 1919 } 1920 of_unittest_track_overlay(*overlay_id); 1921 1922 return 0; 1923 } 1924 1925 /* apply an overlay while checking before and after states */ 1926 static int __init of_unittest_apply_overlay_check(int overlay_nr, 1927 int unittest_nr, int before, int after, 1928 enum overlay_type ovtype) 1929 { 1930 int ret, ovcs_id; 1931 1932 /* unittest device must not be in before state */ 1933 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1934 unittest(0, "%s with device @\"%s\" %s\n", 1935 overlay_name_from_nr(overlay_nr), 1936 unittest_path(unittest_nr, ovtype), 1937 !before ? "enabled" : "disabled"); 1938 return -EINVAL; 1939 } 1940 1941 ovcs_id = 0; 1942 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 1943 if (ret != 0) { 1944 /* of_unittest_apply_overlay already called unittest() */ 1945 return ret; 1946 } 1947 1948 /* unittest device must be to set to after state */ 1949 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 1950 unittest(0, "%s failed to create @\"%s\" %s\n", 1951 overlay_name_from_nr(overlay_nr), 1952 unittest_path(unittest_nr, ovtype), 1953 !after ? "enabled" : "disabled"); 1954 return -EINVAL; 1955 } 1956 1957 return 0; 1958 } 1959 1960 /* apply an overlay and then revert it while checking before, after states */ 1961 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 1962 int unittest_nr, int before, int after, 1963 enum overlay_type ovtype) 1964 { 1965 int ret, ovcs_id; 1966 1967 /* unittest device must be in before state */ 1968 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1969 unittest(0, "%s with device @\"%s\" %s\n", 1970 overlay_name_from_nr(overlay_nr), 1971 unittest_path(unittest_nr, ovtype), 1972 !before ? "enabled" : "disabled"); 1973 return -EINVAL; 1974 } 1975 1976 /* apply the overlay */ 1977 ovcs_id = 0; 1978 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 1979 if (ret != 0) { 1980 /* of_unittest_apply_overlay already called unittest() */ 1981 return ret; 1982 } 1983 1984 /* unittest device must be in after state */ 1985 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 1986 unittest(0, "%s failed to create @\"%s\" %s\n", 1987 overlay_name_from_nr(overlay_nr), 1988 unittest_path(unittest_nr, ovtype), 1989 !after ? "enabled" : "disabled"); 1990 return -EINVAL; 1991 } 1992 1993 ret = of_overlay_remove(&ovcs_id); 1994 if (ret != 0) { 1995 unittest(0, "%s failed to be destroyed @\"%s\"\n", 1996 overlay_name_from_nr(overlay_nr), 1997 unittest_path(unittest_nr, ovtype)); 1998 return ret; 1999 } 2000 2001 /* unittest device must be again in before state */ 2002 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2003 unittest(0, "%s with device @\"%s\" %s\n", 2004 overlay_name_from_nr(overlay_nr), 2005 unittest_path(unittest_nr, ovtype), 2006 !before ? "enabled" : "disabled"); 2007 return -EINVAL; 2008 } 2009 2010 return 0; 2011 } 2012 2013 /* test activation of device */ 2014 static void __init of_unittest_overlay_0(void) 2015 { 2016 int ret; 2017 2018 EXPECT_BEGIN(KERN_INFO, 2019 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2020 2021 /* device should enable */ 2022 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2023 2024 EXPECT_END(KERN_INFO, 2025 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2026 2027 if (ret) 2028 return; 2029 2030 unittest(1, "overlay test %d passed\n", 0); 2031 } 2032 2033 /* test deactivation of device */ 2034 static void __init of_unittest_overlay_1(void) 2035 { 2036 int ret; 2037 2038 EXPECT_BEGIN(KERN_INFO, 2039 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2040 2041 /* device should disable */ 2042 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2043 2044 EXPECT_END(KERN_INFO, 2045 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2046 2047 if (ret) 2048 return; 2049 2050 unittest(1, "overlay test %d passed\n", 1); 2051 2052 } 2053 2054 /* test activation of device */ 2055 static void __init of_unittest_overlay_2(void) 2056 { 2057 int ret; 2058 2059 EXPECT_BEGIN(KERN_INFO, 2060 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2061 2062 /* device should enable */ 2063 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2064 2065 EXPECT_END(KERN_INFO, 2066 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2067 2068 if (ret) 2069 return; 2070 unittest(1, "overlay test %d passed\n", 2); 2071 } 2072 2073 /* test deactivation of device */ 2074 static void __init of_unittest_overlay_3(void) 2075 { 2076 int ret; 2077 2078 EXPECT_BEGIN(KERN_INFO, 2079 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2080 2081 /* device should disable */ 2082 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2083 2084 EXPECT_END(KERN_INFO, 2085 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2086 2087 if (ret) 2088 return; 2089 2090 unittest(1, "overlay test %d passed\n", 3); 2091 } 2092 2093 /* test activation of a full device node */ 2094 static void __init of_unittest_overlay_4(void) 2095 { 2096 /* device should disable */ 2097 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2098 return; 2099 2100 unittest(1, "overlay test %d passed\n", 4); 2101 } 2102 2103 /* test overlay apply/revert sequence */ 2104 static void __init of_unittest_overlay_5(void) 2105 { 2106 int ret; 2107 2108 EXPECT_BEGIN(KERN_INFO, 2109 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2110 2111 /* device should disable */ 2112 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2113 2114 EXPECT_END(KERN_INFO, 2115 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2116 2117 if (ret) 2118 return; 2119 2120 unittest(1, "overlay test %d passed\n", 5); 2121 } 2122 2123 /* test overlay application in sequence */ 2124 static void __init of_unittest_overlay_6(void) 2125 { 2126 int i, ov_id[2], ovcs_id; 2127 int overlay_nr = 6, unittest_nr = 6; 2128 int before = 0, after = 1; 2129 const char *overlay_name; 2130 2131 int ret; 2132 2133 /* unittest device must be in before state */ 2134 for (i = 0; i < 2; i++) { 2135 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2136 != before) { 2137 unittest(0, "%s with device @\"%s\" %s\n", 2138 overlay_name_from_nr(overlay_nr + i), 2139 unittest_path(unittest_nr + i, 2140 PDEV_OVERLAY), 2141 !before ? "enabled" : "disabled"); 2142 return; 2143 } 2144 } 2145 2146 /* apply the overlays */ 2147 2148 EXPECT_BEGIN(KERN_INFO, 2149 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2150 2151 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2152 2153 ret = overlay_data_apply(overlay_name, &ovcs_id); 2154 2155 if (!ret) { 2156 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2157 return; 2158 } 2159 ov_id[0] = ovcs_id; 2160 of_unittest_track_overlay(ov_id[0]); 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-unittest6/status"); 2164 2165 EXPECT_BEGIN(KERN_INFO, 2166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2167 2168 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2169 2170 ret = overlay_data_apply(overlay_name, &ovcs_id); 2171 2172 if (!ret) { 2173 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2174 return; 2175 } 2176 ov_id[1] = ovcs_id; 2177 of_unittest_track_overlay(ov_id[1]); 2178 2179 EXPECT_END(KERN_INFO, 2180 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2181 2182 2183 for (i = 0; i < 2; i++) { 2184 /* unittest device must be in after state */ 2185 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2186 != after) { 2187 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2188 overlay_name_from_nr(overlay_nr + i), 2189 unittest_path(unittest_nr + i, 2190 PDEV_OVERLAY), 2191 !after ? "enabled" : "disabled"); 2192 return; 2193 } 2194 } 2195 2196 for (i = 1; i >= 0; i--) { 2197 ovcs_id = ov_id[i]; 2198 if (of_overlay_remove(&ovcs_id)) { 2199 unittest(0, "%s failed destroy @\"%s\"\n", 2200 overlay_name_from_nr(overlay_nr + i), 2201 unittest_path(unittest_nr + i, 2202 PDEV_OVERLAY)); 2203 return; 2204 } 2205 of_unittest_untrack_overlay(ov_id[i]); 2206 } 2207 2208 for (i = 0; i < 2; i++) { 2209 /* unittest device must be again in before state */ 2210 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2211 != before) { 2212 unittest(0, "%s with device @\"%s\" %s\n", 2213 overlay_name_from_nr(overlay_nr + i), 2214 unittest_path(unittest_nr + i, 2215 PDEV_OVERLAY), 2216 !before ? "enabled" : "disabled"); 2217 return; 2218 } 2219 } 2220 2221 unittest(1, "overlay test %d passed\n", 6); 2222 2223 } 2224 2225 /* test overlay application in sequence */ 2226 static void __init of_unittest_overlay_8(void) 2227 { 2228 int i, ov_id[2], ovcs_id; 2229 int overlay_nr = 8, unittest_nr = 8; 2230 const char *overlay_name; 2231 int ret; 2232 2233 /* we don't care about device state in this test */ 2234 2235 EXPECT_BEGIN(KERN_INFO, 2236 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2237 2238 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2239 2240 ret = overlay_data_apply(overlay_name, &ovcs_id); 2241 if (!ret) 2242 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2243 2244 EXPECT_END(KERN_INFO, 2245 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2246 2247 if (!ret) 2248 return; 2249 2250 ov_id[0] = ovcs_id; 2251 of_unittest_track_overlay(ov_id[0]); 2252 2253 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2254 2255 EXPECT_BEGIN(KERN_INFO, 2256 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2257 2258 /* apply the overlays */ 2259 ret = overlay_data_apply(overlay_name, &ovcs_id); 2260 2261 EXPECT_END(KERN_INFO, 2262 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2263 2264 if (!ret) { 2265 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2266 return; 2267 } 2268 2269 ov_id[1] = ovcs_id; 2270 of_unittest_track_overlay(ov_id[1]); 2271 2272 /* now try to remove first overlay (it should fail) */ 2273 ovcs_id = ov_id[0]; 2274 2275 EXPECT_BEGIN(KERN_INFO, 2276 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2277 2278 EXPECT_BEGIN(KERN_INFO, 2279 "OF: overlay: overlay #6 is not topmost"); 2280 2281 ret = of_overlay_remove(&ovcs_id); 2282 2283 EXPECT_END(KERN_INFO, 2284 "OF: overlay: overlay #6 is not topmost"); 2285 2286 EXPECT_END(KERN_INFO, 2287 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2288 2289 if (!ret) { 2290 unittest(0, "%s was destroyed @\"%s\"\n", 2291 overlay_name_from_nr(overlay_nr + 0), 2292 unittest_path(unittest_nr, 2293 PDEV_OVERLAY)); 2294 return; 2295 } 2296 2297 /* removing them in order should work */ 2298 for (i = 1; i >= 0; i--) { 2299 ovcs_id = ov_id[i]; 2300 if (of_overlay_remove(&ovcs_id)) { 2301 unittest(0, "%s not destroyed @\"%s\"\n", 2302 overlay_name_from_nr(overlay_nr + i), 2303 unittest_path(unittest_nr, 2304 PDEV_OVERLAY)); 2305 return; 2306 } 2307 of_unittest_untrack_overlay(ov_id[i]); 2308 } 2309 2310 unittest(1, "overlay test %d passed\n", 8); 2311 } 2312 2313 /* test insertion of a bus with parent devices */ 2314 static void __init of_unittest_overlay_10(void) 2315 { 2316 int ret; 2317 char *child_path; 2318 2319 /* device should disable */ 2320 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2321 2322 if (unittest(ret == 0, 2323 "overlay test %d failed; overlay application\n", 10)) 2324 return; 2325 2326 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2327 unittest_path(10, PDEV_OVERLAY)); 2328 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2329 return; 2330 2331 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2332 kfree(child_path); 2333 2334 unittest(ret, "overlay test %d failed; no child device\n", 10); 2335 } 2336 2337 /* test insertion of a bus with parent devices (and revert) */ 2338 static void __init of_unittest_overlay_11(void) 2339 { 2340 int ret; 2341 2342 /* device should disable */ 2343 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2344 PDEV_OVERLAY); 2345 2346 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2347 } 2348 2349 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2350 2351 struct unittest_i2c_bus_data { 2352 struct platform_device *pdev; 2353 struct i2c_adapter adap; 2354 }; 2355 2356 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2357 struct i2c_msg *msgs, int num) 2358 { 2359 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2360 2361 (void)std; 2362 2363 return num; 2364 } 2365 2366 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2367 { 2368 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2369 } 2370 2371 static const struct i2c_algorithm unittest_i2c_algo = { 2372 .master_xfer = unittest_i2c_master_xfer, 2373 .functionality = unittest_i2c_functionality, 2374 }; 2375 2376 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2377 { 2378 struct device *dev = &pdev->dev; 2379 struct device_node *np = dev->of_node; 2380 struct unittest_i2c_bus_data *std; 2381 struct i2c_adapter *adap; 2382 int ret; 2383 2384 if (np == NULL) { 2385 dev_err(dev, "No OF data for device\n"); 2386 return -EINVAL; 2387 2388 } 2389 2390 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2391 2392 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2393 if (!std) 2394 return -ENOMEM; 2395 2396 /* link them together */ 2397 std->pdev = pdev; 2398 platform_set_drvdata(pdev, std); 2399 2400 adap = &std->adap; 2401 i2c_set_adapdata(adap, std); 2402 adap->nr = -1; 2403 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2404 adap->class = I2C_CLASS_DEPRECATED; 2405 adap->algo = &unittest_i2c_algo; 2406 adap->dev.parent = dev; 2407 adap->dev.of_node = dev->of_node; 2408 adap->timeout = 5 * HZ; 2409 adap->retries = 3; 2410 2411 ret = i2c_add_numbered_adapter(adap); 2412 if (ret != 0) { 2413 dev_err(dev, "Failed to add I2C adapter\n"); 2414 return ret; 2415 } 2416 2417 return 0; 2418 } 2419 2420 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2421 { 2422 struct device *dev = &pdev->dev; 2423 struct device_node *np = dev->of_node; 2424 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2425 2426 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2427 i2c_del_adapter(&std->adap); 2428 2429 return 0; 2430 } 2431 2432 static const struct of_device_id unittest_i2c_bus_match[] = { 2433 { .compatible = "unittest-i2c-bus", }, 2434 {}, 2435 }; 2436 2437 static struct platform_driver unittest_i2c_bus_driver = { 2438 .probe = unittest_i2c_bus_probe, 2439 .remove = unittest_i2c_bus_remove, 2440 .driver = { 2441 .name = "unittest-i2c-bus", 2442 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2443 }, 2444 }; 2445 2446 static int unittest_i2c_dev_probe(struct i2c_client *client, 2447 const struct i2c_device_id *id) 2448 { 2449 struct device *dev = &client->dev; 2450 struct device_node *np = client->dev.of_node; 2451 2452 if (!np) { 2453 dev_err(dev, "No OF node\n"); 2454 return -EINVAL; 2455 } 2456 2457 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2458 2459 return 0; 2460 }; 2461 2462 static int unittest_i2c_dev_remove(struct i2c_client *client) 2463 { 2464 struct device *dev = &client->dev; 2465 struct device_node *np = client->dev.of_node; 2466 2467 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2468 return 0; 2469 } 2470 2471 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2472 { .name = "unittest-i2c-dev" }, 2473 { } 2474 }; 2475 2476 static struct i2c_driver unittest_i2c_dev_driver = { 2477 .driver = { 2478 .name = "unittest-i2c-dev", 2479 }, 2480 .probe = unittest_i2c_dev_probe, 2481 .remove = unittest_i2c_dev_remove, 2482 .id_table = unittest_i2c_dev_id, 2483 }; 2484 2485 #if IS_BUILTIN(CONFIG_I2C_MUX) 2486 2487 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2488 { 2489 return 0; 2490 } 2491 2492 static int unittest_i2c_mux_probe(struct i2c_client *client, 2493 const struct i2c_device_id *id) 2494 { 2495 int i, nchans; 2496 struct device *dev = &client->dev; 2497 struct i2c_adapter *adap = client->adapter; 2498 struct device_node *np = client->dev.of_node, *child; 2499 struct i2c_mux_core *muxc; 2500 u32 reg, max_reg; 2501 2502 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2503 2504 if (!np) { 2505 dev_err(dev, "No OF node\n"); 2506 return -EINVAL; 2507 } 2508 2509 max_reg = (u32)-1; 2510 for_each_child_of_node(np, child) { 2511 if (of_property_read_u32(child, "reg", ®)) 2512 continue; 2513 if (max_reg == (u32)-1 || reg > max_reg) 2514 max_reg = reg; 2515 } 2516 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2517 if (nchans == 0) { 2518 dev_err(dev, "No channels\n"); 2519 return -EINVAL; 2520 } 2521 2522 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2523 unittest_i2c_mux_select_chan, NULL); 2524 if (!muxc) 2525 return -ENOMEM; 2526 for (i = 0; i < nchans; i++) { 2527 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2528 dev_err(dev, "Failed to register mux #%d\n", i); 2529 i2c_mux_del_adapters(muxc); 2530 return -ENODEV; 2531 } 2532 } 2533 2534 i2c_set_clientdata(client, muxc); 2535 2536 return 0; 2537 }; 2538 2539 static int unittest_i2c_mux_remove(struct i2c_client *client) 2540 { 2541 struct device *dev = &client->dev; 2542 struct device_node *np = client->dev.of_node; 2543 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2544 2545 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2546 i2c_mux_del_adapters(muxc); 2547 return 0; 2548 } 2549 2550 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2551 { .name = "unittest-i2c-mux" }, 2552 { } 2553 }; 2554 2555 static struct i2c_driver unittest_i2c_mux_driver = { 2556 .driver = { 2557 .name = "unittest-i2c-mux", 2558 }, 2559 .probe = unittest_i2c_mux_probe, 2560 .remove = unittest_i2c_mux_remove, 2561 .id_table = unittest_i2c_mux_id, 2562 }; 2563 2564 #endif 2565 2566 static int of_unittest_overlay_i2c_init(void) 2567 { 2568 int ret; 2569 2570 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2571 if (unittest(ret == 0, 2572 "could not register unittest i2c device driver\n")) 2573 return ret; 2574 2575 ret = platform_driver_register(&unittest_i2c_bus_driver); 2576 2577 if (unittest(ret == 0, 2578 "could not register unittest i2c bus driver\n")) 2579 return ret; 2580 2581 #if IS_BUILTIN(CONFIG_I2C_MUX) 2582 2583 EXPECT_BEGIN(KERN_INFO, 2584 "i2c i2c-1: Added multiplexed i2c bus 2"); 2585 2586 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2587 2588 EXPECT_END(KERN_INFO, 2589 "i2c i2c-1: Added multiplexed i2c bus 2"); 2590 2591 if (unittest(ret == 0, 2592 "could not register unittest i2c mux driver\n")) 2593 return ret; 2594 #endif 2595 2596 return 0; 2597 } 2598 2599 static void of_unittest_overlay_i2c_cleanup(void) 2600 { 2601 #if IS_BUILTIN(CONFIG_I2C_MUX) 2602 i2c_del_driver(&unittest_i2c_mux_driver); 2603 #endif 2604 platform_driver_unregister(&unittest_i2c_bus_driver); 2605 i2c_del_driver(&unittest_i2c_dev_driver); 2606 } 2607 2608 static void __init of_unittest_overlay_i2c_12(void) 2609 { 2610 int ret; 2611 2612 /* device should enable */ 2613 EXPECT_BEGIN(KERN_INFO, 2614 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2615 2616 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2617 2618 EXPECT_END(KERN_INFO, 2619 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2620 2621 if (ret) 2622 return; 2623 2624 unittest(1, "overlay test %d passed\n", 12); 2625 } 2626 2627 /* test deactivation of device */ 2628 static void __init of_unittest_overlay_i2c_13(void) 2629 { 2630 int ret; 2631 2632 EXPECT_BEGIN(KERN_INFO, 2633 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2634 2635 /* device should disable */ 2636 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2637 2638 EXPECT_END(KERN_INFO, 2639 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2640 2641 if (ret) 2642 return; 2643 2644 unittest(1, "overlay test %d passed\n", 13); 2645 } 2646 2647 /* just check for i2c mux existence */ 2648 static void of_unittest_overlay_i2c_14(void) 2649 { 2650 } 2651 2652 static void __init of_unittest_overlay_i2c_15(void) 2653 { 2654 int ret; 2655 2656 /* device should enable */ 2657 EXPECT_BEGIN(KERN_INFO, 2658 "i2c i2c-1: Added multiplexed i2c bus 3"); 2659 2660 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2661 2662 EXPECT_END(KERN_INFO, 2663 "i2c i2c-1: Added multiplexed i2c bus 3"); 2664 2665 if (ret) 2666 return; 2667 2668 unittest(1, "overlay test %d passed\n", 15); 2669 } 2670 2671 #else 2672 2673 static inline void of_unittest_overlay_i2c_14(void) { } 2674 static inline void of_unittest_overlay_i2c_15(void) { } 2675 2676 #endif 2677 2678 static void __init of_unittest_overlay(void) 2679 { 2680 struct device_node *bus_np = NULL; 2681 2682 if (platform_driver_register(&unittest_driver)) { 2683 unittest(0, "could not register unittest driver\n"); 2684 goto out; 2685 } 2686 2687 bus_np = of_find_node_by_path(bus_path); 2688 if (bus_np == NULL) { 2689 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2690 goto out; 2691 } 2692 2693 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2694 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2695 goto out; 2696 } 2697 2698 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2699 unittest(0, "could not find unittest0 @ \"%s\"\n", 2700 unittest_path(100, PDEV_OVERLAY)); 2701 goto out; 2702 } 2703 2704 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2705 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2706 unittest_path(101, PDEV_OVERLAY)); 2707 goto out; 2708 } 2709 2710 unittest(1, "basic infrastructure of overlays passed"); 2711 2712 /* tests in sequence */ 2713 of_unittest_overlay_0(); 2714 of_unittest_overlay_1(); 2715 of_unittest_overlay_2(); 2716 of_unittest_overlay_3(); 2717 of_unittest_overlay_4(); 2718 of_unittest_overlay_5(); 2719 of_unittest_overlay_6(); 2720 of_unittest_overlay_8(); 2721 2722 of_unittest_overlay_10(); 2723 of_unittest_overlay_11(); 2724 2725 #if IS_BUILTIN(CONFIG_I2C) 2726 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2727 goto out; 2728 2729 of_unittest_overlay_i2c_12(); 2730 of_unittest_overlay_i2c_13(); 2731 of_unittest_overlay_i2c_14(); 2732 of_unittest_overlay_i2c_15(); 2733 2734 of_unittest_overlay_i2c_cleanup(); 2735 #endif 2736 2737 of_unittest_overlay_gpio(); 2738 2739 of_unittest_destroy_tracked_overlays(); 2740 2741 out: 2742 of_node_put(bus_np); 2743 } 2744 2745 #else 2746 static inline void __init of_unittest_overlay(void) { } 2747 #endif 2748 2749 #ifdef CONFIG_OF_OVERLAY 2750 2751 /* 2752 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2753 * in scripts/Makefile.lib 2754 */ 2755 2756 #define OVERLAY_INFO_EXTERN(name) \ 2757 extern uint8_t __dtb_##name##_begin[]; \ 2758 extern uint8_t __dtb_##name##_end[] 2759 2760 #define OVERLAY_INFO(overlay_name, expected) \ 2761 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2762 .dtb_end = __dtb_##overlay_name##_end, \ 2763 .expected_result = expected, \ 2764 .name = #overlay_name, \ 2765 } 2766 2767 struct overlay_info { 2768 uint8_t *dtb_begin; 2769 uint8_t *dtb_end; 2770 int expected_result; 2771 int overlay_id; 2772 char *name; 2773 }; 2774 2775 OVERLAY_INFO_EXTERN(overlay_base); 2776 OVERLAY_INFO_EXTERN(overlay); 2777 OVERLAY_INFO_EXTERN(overlay_0); 2778 OVERLAY_INFO_EXTERN(overlay_1); 2779 OVERLAY_INFO_EXTERN(overlay_2); 2780 OVERLAY_INFO_EXTERN(overlay_3); 2781 OVERLAY_INFO_EXTERN(overlay_4); 2782 OVERLAY_INFO_EXTERN(overlay_5); 2783 OVERLAY_INFO_EXTERN(overlay_6); 2784 OVERLAY_INFO_EXTERN(overlay_7); 2785 OVERLAY_INFO_EXTERN(overlay_8); 2786 OVERLAY_INFO_EXTERN(overlay_9); 2787 OVERLAY_INFO_EXTERN(overlay_10); 2788 OVERLAY_INFO_EXTERN(overlay_11); 2789 OVERLAY_INFO_EXTERN(overlay_12); 2790 OVERLAY_INFO_EXTERN(overlay_13); 2791 OVERLAY_INFO_EXTERN(overlay_15); 2792 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2793 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2794 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2795 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2796 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2797 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2798 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2799 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2800 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2801 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2802 2803 /* entries found by name */ 2804 static struct overlay_info overlays[] = { 2805 OVERLAY_INFO(overlay_base, -9999), 2806 OVERLAY_INFO(overlay, 0), 2807 OVERLAY_INFO(overlay_0, 0), 2808 OVERLAY_INFO(overlay_1, 0), 2809 OVERLAY_INFO(overlay_2, 0), 2810 OVERLAY_INFO(overlay_3, 0), 2811 OVERLAY_INFO(overlay_4, 0), 2812 OVERLAY_INFO(overlay_5, 0), 2813 OVERLAY_INFO(overlay_6, 0), 2814 OVERLAY_INFO(overlay_7, 0), 2815 OVERLAY_INFO(overlay_8, 0), 2816 OVERLAY_INFO(overlay_9, 0), 2817 OVERLAY_INFO(overlay_10, 0), 2818 OVERLAY_INFO(overlay_11, 0), 2819 OVERLAY_INFO(overlay_12, 0), 2820 OVERLAY_INFO(overlay_13, 0), 2821 OVERLAY_INFO(overlay_15, 0), 2822 OVERLAY_INFO(overlay_gpio_01, 0), 2823 OVERLAY_INFO(overlay_gpio_02a, 0), 2824 OVERLAY_INFO(overlay_gpio_02b, 0), 2825 OVERLAY_INFO(overlay_gpio_03, 0), 2826 OVERLAY_INFO(overlay_gpio_04a, 0), 2827 OVERLAY_INFO(overlay_gpio_04b, 0), 2828 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2829 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2830 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2831 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2832 /* end marker */ 2833 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2834 }; 2835 2836 static struct device_node *overlay_base_root; 2837 2838 static void * __init dt_alloc_memory(u64 size, u64 align) 2839 { 2840 void *ptr = memblock_alloc(size, align); 2841 2842 if (!ptr) 2843 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2844 __func__, size, align); 2845 2846 return ptr; 2847 } 2848 2849 /* 2850 * Create base device tree for the overlay unittest. 2851 * 2852 * This is called from very early boot code. 2853 * 2854 * Do as much as possible the same way as done in __unflatten_device_tree 2855 * and other early boot steps for the normal FDT so that the overlay base 2856 * unflattened tree will have the same characteristics as the real tree 2857 * (such as having memory allocated by the early allocator). The goal 2858 * is to test "the real thing" as much as possible, and test "test setup 2859 * code" as little as possible. 2860 * 2861 * Have to stop before resolving phandles, because that uses kmalloc. 2862 */ 2863 void __init unittest_unflatten_overlay_base(void) 2864 { 2865 struct overlay_info *info; 2866 u32 data_size; 2867 void *new_fdt; 2868 u32 size; 2869 int found = 0; 2870 const char *overlay_name = "overlay_base"; 2871 2872 for (info = overlays; info && info->name; info++) { 2873 if (!strcmp(overlay_name, info->name)) { 2874 found = 1; 2875 break; 2876 } 2877 } 2878 if (!found) { 2879 pr_err("no overlay data for %s\n", overlay_name); 2880 return; 2881 } 2882 2883 info = &overlays[0]; 2884 2885 if (info->expected_result != -9999) { 2886 pr_err("No dtb 'overlay_base' to attach\n"); 2887 return; 2888 } 2889 2890 data_size = info->dtb_end - info->dtb_begin; 2891 if (!data_size) { 2892 pr_err("No dtb 'overlay_base' to attach\n"); 2893 return; 2894 } 2895 2896 size = fdt_totalsize(info->dtb_begin); 2897 if (size != data_size) { 2898 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2899 return; 2900 } 2901 2902 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2903 if (!new_fdt) { 2904 pr_err("alloc for dtb 'overlay_base' failed"); 2905 return; 2906 } 2907 2908 memcpy(new_fdt, info->dtb_begin, size); 2909 2910 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2911 dt_alloc_memory, true); 2912 } 2913 2914 /* 2915 * The purpose of of_unittest_overlay_data_add is to add an 2916 * overlay in the normal fashion. This is a test of the whole 2917 * picture, instead of testing individual elements. 2918 * 2919 * A secondary purpose is to be able to verify that the contents of 2920 * /proc/device-tree/ contains the updated structure and values from 2921 * the overlay. That must be verified separately in user space. 2922 * 2923 * Return 0 on unexpected error. 2924 */ 2925 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 2926 { 2927 struct overlay_info *info; 2928 int found = 0; 2929 int ret; 2930 u32 size; 2931 2932 for (info = overlays; info && info->name; info++) { 2933 if (!strcmp(overlay_name, info->name)) { 2934 found = 1; 2935 break; 2936 } 2937 } 2938 if (!found) { 2939 pr_err("no overlay data for %s\n", overlay_name); 2940 return 0; 2941 } 2942 2943 size = info->dtb_end - info->dtb_begin; 2944 if (!size) 2945 pr_err("no overlay data for %s\n", overlay_name); 2946 2947 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 2948 if (overlay_id) 2949 *overlay_id = info->overlay_id; 2950 if (ret < 0) 2951 goto out; 2952 2953 pr_debug("%s applied\n", overlay_name); 2954 2955 out: 2956 if (ret != info->expected_result) 2957 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 2958 info->expected_result, ret, overlay_name); 2959 2960 return (ret == info->expected_result); 2961 } 2962 2963 /* 2964 * The purpose of of_unittest_overlay_high_level is to add an overlay 2965 * in the normal fashion. This is a test of the whole picture, 2966 * instead of individual elements. 2967 * 2968 * The first part of the function is _not_ normal overlay usage; it is 2969 * finishing splicing the base overlay device tree into the live tree. 2970 */ 2971 static __init void of_unittest_overlay_high_level(void) 2972 { 2973 struct device_node *last_sibling; 2974 struct device_node *np; 2975 struct device_node *of_symbols; 2976 struct device_node *overlay_base_symbols; 2977 struct device_node **pprev; 2978 struct property *prop; 2979 int ret; 2980 2981 if (!overlay_base_root) { 2982 unittest(0, "overlay_base_root not initialized\n"); 2983 return; 2984 } 2985 2986 /* 2987 * Could not fixup phandles in unittest_unflatten_overlay_base() 2988 * because kmalloc() was not yet available. 2989 */ 2990 of_overlay_mutex_lock(); 2991 of_resolve_phandles(overlay_base_root); 2992 of_overlay_mutex_unlock(); 2993 2994 2995 /* 2996 * do not allow overlay_base to duplicate any node already in 2997 * tree, this greatly simplifies the code 2998 */ 2999 3000 /* 3001 * remove overlay_base_root node "__local_fixups", after 3002 * being used by of_resolve_phandles() 3003 */ 3004 pprev = &overlay_base_root->child; 3005 for (np = overlay_base_root->child; np; np = np->sibling) { 3006 if (of_node_name_eq(np, "__local_fixups__")) { 3007 *pprev = np->sibling; 3008 break; 3009 } 3010 pprev = &np->sibling; 3011 } 3012 3013 /* remove overlay_base_root node "__symbols__" if in live tree */ 3014 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3015 if (of_symbols) { 3016 /* will have to graft properties from node into live tree */ 3017 pprev = &overlay_base_root->child; 3018 for (np = overlay_base_root->child; np; np = np->sibling) { 3019 if (of_node_name_eq(np, "__symbols__")) { 3020 overlay_base_symbols = np; 3021 *pprev = np->sibling; 3022 break; 3023 } 3024 pprev = &np->sibling; 3025 } 3026 } 3027 3028 for_each_child_of_node(overlay_base_root, np) { 3029 struct device_node *base_child; 3030 for_each_child_of_node(of_root, base_child) { 3031 if (!strcmp(np->full_name, base_child->full_name)) { 3032 unittest(0, "illegal node name in overlay_base %pOFn", 3033 np); 3034 return; 3035 } 3036 } 3037 } 3038 3039 /* 3040 * overlay 'overlay_base' is not allowed to have root 3041 * properties, so only need to splice nodes into main device tree. 3042 * 3043 * root node of *overlay_base_root will not be freed, it is lost 3044 * memory. 3045 */ 3046 3047 for (np = overlay_base_root->child; np; np = np->sibling) 3048 np->parent = of_root; 3049 3050 mutex_lock(&of_mutex); 3051 3052 for (last_sibling = np = of_root->child; np; np = np->sibling) 3053 last_sibling = np; 3054 3055 if (last_sibling) 3056 last_sibling->sibling = overlay_base_root->child; 3057 else 3058 of_root->child = overlay_base_root->child; 3059 3060 for_each_of_allnodes_from(overlay_base_root, np) 3061 __of_attach_node_sysfs(np); 3062 3063 if (of_symbols) { 3064 struct property *new_prop; 3065 for_each_property_of_node(overlay_base_symbols, prop) { 3066 3067 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3068 if (!new_prop) { 3069 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3070 prop->name); 3071 goto err_unlock; 3072 } 3073 if (__of_add_property(of_symbols, new_prop)) { 3074 /* "name" auto-generated by unflatten */ 3075 if (!strcmp(new_prop->name, "name")) 3076 continue; 3077 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3078 prop->name); 3079 goto err_unlock; 3080 } 3081 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3082 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3083 prop->name); 3084 goto err_unlock; 3085 } 3086 } 3087 } 3088 3089 mutex_unlock(&of_mutex); 3090 3091 3092 /* now do the normal overlay usage test */ 3093 3094 EXPECT_BEGIN(KERN_ERR, 3095 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3096 EXPECT_BEGIN(KERN_ERR, 3097 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3098 EXPECT_BEGIN(KERN_ERR, 3099 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3100 EXPECT_BEGIN(KERN_ERR, 3101 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3102 EXPECT_BEGIN(KERN_ERR, 3103 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3104 EXPECT_BEGIN(KERN_ERR, 3105 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3106 EXPECT_BEGIN(KERN_ERR, 3107 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3108 EXPECT_BEGIN(KERN_ERR, 3109 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3110 EXPECT_BEGIN(KERN_ERR, 3111 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3112 EXPECT_BEGIN(KERN_ERR, 3113 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3114 EXPECT_BEGIN(KERN_ERR, 3115 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3116 3117 ret = overlay_data_apply("overlay", NULL); 3118 3119 EXPECT_END(KERN_ERR, 3120 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3121 EXPECT_END(KERN_ERR, 3122 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3123 EXPECT_END(KERN_ERR, 3124 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3125 EXPECT_END(KERN_ERR, 3126 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3127 EXPECT_END(KERN_ERR, 3128 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3129 EXPECT_END(KERN_ERR, 3130 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3131 EXPECT_END(KERN_ERR, 3132 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3133 EXPECT_END(KERN_ERR, 3134 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3135 EXPECT_END(KERN_ERR, 3136 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3137 EXPECT_END(KERN_ERR, 3138 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3139 EXPECT_END(KERN_ERR, 3140 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3141 3142 unittest(ret, "Adding overlay 'overlay' failed\n"); 3143 3144 EXPECT_BEGIN(KERN_ERR, 3145 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3146 EXPECT_BEGIN(KERN_ERR, 3147 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3148 3149 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3150 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3151 3152 EXPECT_END(KERN_ERR, 3153 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3154 EXPECT_END(KERN_ERR, 3155 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3156 3157 EXPECT_BEGIN(KERN_ERR, 3158 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail"); 3159 EXPECT_BEGIN(KERN_ERR, 3160 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail"); 3161 EXPECT_BEGIN(KERN_ERR, 3162 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/rpm_avail"); 3163 3164 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3165 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3166 3167 EXPECT_END(KERN_ERR, 3168 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/rpm_avail"); 3169 EXPECT_END(KERN_ERR, 3170 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail"); 3171 EXPECT_END(KERN_ERR, 3172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail"); 3173 3174 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3175 "Adding overlay 'overlay_bad_phandle' failed\n"); 3176 3177 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3178 "Adding overlay 'overlay_bad_symbol' failed\n"); 3179 3180 return; 3181 3182 err_unlock: 3183 mutex_unlock(&of_mutex); 3184 } 3185 3186 #else 3187 3188 static inline __init void of_unittest_overlay_high_level(void) {} 3189 3190 #endif 3191 3192 static int __init of_unittest(void) 3193 { 3194 struct device_node *np; 3195 int res; 3196 3197 pr_info("start of unittest - you will see error messages\n"); 3198 3199 /* adding data for unittest */ 3200 3201 if (IS_ENABLED(CONFIG_UML)) 3202 unittest_unflatten_overlay_base(); 3203 3204 res = unittest_data_add(); 3205 if (res) 3206 return res; 3207 if (!of_aliases) 3208 of_aliases = of_find_node_by_path("/aliases"); 3209 3210 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3211 if (!np) { 3212 pr_info("No testcase data in device tree; not running tests\n"); 3213 return 0; 3214 } 3215 of_node_put(np); 3216 3217 of_unittest_check_tree_linkage(); 3218 of_unittest_check_phandles(); 3219 of_unittest_find_node_by_name(); 3220 of_unittest_dynamic(); 3221 of_unittest_parse_phandle_with_args(); 3222 of_unittest_parse_phandle_with_args_map(); 3223 of_unittest_printf(); 3224 of_unittest_property_string(); 3225 of_unittest_property_copy(); 3226 of_unittest_changeset(); 3227 of_unittest_parse_interrupts(); 3228 of_unittest_parse_interrupts_extended(); 3229 of_unittest_parse_dma_ranges(); 3230 of_unittest_pci_dma_ranges(); 3231 of_unittest_match_node(); 3232 of_unittest_platform_populate(); 3233 of_unittest_overlay(); 3234 3235 /* Double check linkage after removing testcase data */ 3236 of_unittest_check_tree_linkage(); 3237 3238 of_unittest_overlay_high_level(); 3239 3240 pr_info("end of unittest - %i passed, %i failed\n", 3241 unittest_results.passed, unittest_results.failed); 3242 3243 return 0; 3244 } 3245 late_initcall(of_unittest); 3246