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); 864 865 of_node_put(n1); 866 of_node_put(n2); 867 of_node_put(n21); 868 #endif 869 } 870 871 static void __init of_unittest_dma_ranges_one(const char *path, 872 u64 expect_dma_addr, u64 expect_paddr, u64 expect_size) 873 { 874 struct device_node *np; 875 u64 dma_addr, paddr, size; 876 int rc; 877 878 np = of_find_node_by_path(path); 879 if (!np) { 880 pr_err("missing testcase data\n"); 881 return; 882 } 883 884 rc = of_dma_get_range(np, &dma_addr, &paddr, &size); 885 886 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 887 if (!rc) { 888 unittest(size == expect_size, 889 "of_dma_get_range wrong size on node %pOF size=%llx\n", np, size); 890 unittest(paddr == expect_paddr, 891 "of_dma_get_range wrong phys addr (%llx) on node %pOF", paddr, np); 892 unittest(dma_addr == expect_dma_addr, 893 "of_dma_get_range wrong DMA addr (%llx) on node %pOF", dma_addr, np); 894 } 895 of_node_put(np); 896 } 897 898 static void __init of_unittest_parse_dma_ranges(void) 899 { 900 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 901 0x0, 0x20000000, 0x40000000); 902 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 903 0x100000000, 0x20000000, 0x2000000000); 904 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 905 0x80000000, 0x20000000, 0x10000000); 906 } 907 908 static void __init of_unittest_pci_dma_ranges(void) 909 { 910 struct device_node *np; 911 struct of_pci_range range; 912 struct of_pci_range_parser parser; 913 int i = 0; 914 915 if (!IS_ENABLED(CONFIG_PCI)) 916 return; 917 918 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 919 if (!np) { 920 pr_err("missing testcase data\n"); 921 return; 922 } 923 924 if (of_pci_dma_range_parser_init(&parser, np)) { 925 pr_err("missing dma-ranges property\n"); 926 return; 927 } 928 929 /* 930 * Get the dma-ranges from the device tree 931 */ 932 for_each_of_pci_range(&parser, &range) { 933 if (!i) { 934 unittest(range.size == 0x10000000, 935 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 936 np, range.size); 937 unittest(range.cpu_addr == 0x20000000, 938 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 939 range.cpu_addr, np); 940 unittest(range.pci_addr == 0x80000000, 941 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 942 range.pci_addr, np); 943 } else { 944 unittest(range.size == 0x10000000, 945 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 946 np, range.size); 947 unittest(range.cpu_addr == 0x40000000, 948 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 949 range.cpu_addr, np); 950 unittest(range.pci_addr == 0xc0000000, 951 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 952 range.pci_addr, np); 953 } 954 i++; 955 } 956 957 of_node_put(np); 958 } 959 960 static void __init of_unittest_parse_interrupts(void) 961 { 962 struct device_node *np; 963 struct of_phandle_args args; 964 int i, rc; 965 966 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 967 return; 968 969 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 970 if (!np) { 971 pr_err("missing testcase data\n"); 972 return; 973 } 974 975 for (i = 0; i < 4; i++) { 976 bool passed = true; 977 978 memset(&args, 0, sizeof(args)); 979 rc = of_irq_parse_one(np, i, &args); 980 981 passed &= !rc; 982 passed &= (args.args_count == 1); 983 passed &= (args.args[0] == (i + 1)); 984 985 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 986 i, args.np, rc); 987 } 988 of_node_put(np); 989 990 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 991 if (!np) { 992 pr_err("missing testcase data\n"); 993 return; 994 } 995 996 for (i = 0; i < 4; i++) { 997 bool passed = true; 998 999 memset(&args, 0, sizeof(args)); 1000 rc = of_irq_parse_one(np, i, &args); 1001 1002 /* Test the values from tests-phandle.dtsi */ 1003 switch (i) { 1004 case 0: 1005 passed &= !rc; 1006 passed &= (args.args_count == 1); 1007 passed &= (args.args[0] == 9); 1008 break; 1009 case 1: 1010 passed &= !rc; 1011 passed &= (args.args_count == 3); 1012 passed &= (args.args[0] == 10); 1013 passed &= (args.args[1] == 11); 1014 passed &= (args.args[2] == 12); 1015 break; 1016 case 2: 1017 passed &= !rc; 1018 passed &= (args.args_count == 2); 1019 passed &= (args.args[0] == 13); 1020 passed &= (args.args[1] == 14); 1021 break; 1022 case 3: 1023 passed &= !rc; 1024 passed &= (args.args_count == 2); 1025 passed &= (args.args[0] == 15); 1026 passed &= (args.args[1] == 16); 1027 break; 1028 default: 1029 passed = false; 1030 } 1031 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1032 i, args.np, rc); 1033 } 1034 of_node_put(np); 1035 } 1036 1037 static void __init of_unittest_parse_interrupts_extended(void) 1038 { 1039 struct device_node *np; 1040 struct of_phandle_args args; 1041 int i, rc; 1042 1043 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1044 return; 1045 1046 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1047 if (!np) { 1048 pr_err("missing testcase data\n"); 1049 return; 1050 } 1051 1052 for (i = 0; i < 7; i++) { 1053 bool passed = true; 1054 1055 memset(&args, 0, sizeof(args)); 1056 rc = of_irq_parse_one(np, i, &args); 1057 1058 /* Test the values from tests-phandle.dtsi */ 1059 switch (i) { 1060 case 0: 1061 passed &= !rc; 1062 passed &= (args.args_count == 1); 1063 passed &= (args.args[0] == 1); 1064 break; 1065 case 1: 1066 passed &= !rc; 1067 passed &= (args.args_count == 3); 1068 passed &= (args.args[0] == 2); 1069 passed &= (args.args[1] == 3); 1070 passed &= (args.args[2] == 4); 1071 break; 1072 case 2: 1073 passed &= !rc; 1074 passed &= (args.args_count == 2); 1075 passed &= (args.args[0] == 5); 1076 passed &= (args.args[1] == 6); 1077 break; 1078 case 3: 1079 passed &= !rc; 1080 passed &= (args.args_count == 1); 1081 passed &= (args.args[0] == 9); 1082 break; 1083 case 4: 1084 passed &= !rc; 1085 passed &= (args.args_count == 3); 1086 passed &= (args.args[0] == 10); 1087 passed &= (args.args[1] == 11); 1088 passed &= (args.args[2] == 12); 1089 break; 1090 case 5: 1091 passed &= !rc; 1092 passed &= (args.args_count == 2); 1093 passed &= (args.args[0] == 13); 1094 passed &= (args.args[1] == 14); 1095 break; 1096 case 6: 1097 passed &= !rc; 1098 passed &= (args.args_count == 1); 1099 passed &= (args.args[0] == 15); 1100 break; 1101 default: 1102 passed = false; 1103 } 1104 1105 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1106 i, args.np, rc); 1107 } 1108 of_node_put(np); 1109 } 1110 1111 static const struct of_device_id match_node_table[] = { 1112 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1113 { .data = "B", .type = "type1", }, /* followed by type alone */ 1114 1115 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1116 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1117 { .data = "Cc", .name = "name2", .type = "type2", }, 1118 1119 { .data = "E", .compatible = "compat3" }, 1120 { .data = "G", .compatible = "compat2", }, 1121 { .data = "H", .compatible = "compat2", .name = "name5", }, 1122 { .data = "I", .compatible = "compat2", .type = "type1", }, 1123 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1124 { .data = "K", .compatible = "compat2", .name = "name9", }, 1125 {} 1126 }; 1127 1128 static struct { 1129 const char *path; 1130 const char *data; 1131 } match_node_tests[] = { 1132 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1133 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1134 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1135 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1136 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1137 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1138 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1139 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1140 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1141 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1142 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1143 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1144 }; 1145 1146 static void __init of_unittest_match_node(void) 1147 { 1148 struct device_node *np; 1149 const struct of_device_id *match; 1150 int i; 1151 1152 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1153 np = of_find_node_by_path(match_node_tests[i].path); 1154 if (!np) { 1155 unittest(0, "missing testcase node %s\n", 1156 match_node_tests[i].path); 1157 continue; 1158 } 1159 1160 match = of_match_node(match_node_table, np); 1161 if (!match) { 1162 unittest(0, "%s didn't match anything\n", 1163 match_node_tests[i].path); 1164 continue; 1165 } 1166 1167 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1168 unittest(0, "%s got wrong match. expected %s, got %s\n", 1169 match_node_tests[i].path, match_node_tests[i].data, 1170 (const char *)match->data); 1171 continue; 1172 } 1173 unittest(1, "passed"); 1174 } 1175 } 1176 1177 static struct resource test_bus_res = { 1178 .start = 0xfffffff8, 1179 .end = 0xfffffff9, 1180 .flags = IORESOURCE_MEM, 1181 }; 1182 static const struct platform_device_info test_bus_info = { 1183 .name = "unittest-bus", 1184 }; 1185 static void __init of_unittest_platform_populate(void) 1186 { 1187 int irq, rc; 1188 struct device_node *np, *child, *grandchild; 1189 struct platform_device *pdev, *test_bus; 1190 const struct of_device_id match[] = { 1191 { .compatible = "test-device", }, 1192 {} 1193 }; 1194 1195 np = of_find_node_by_path("/testcase-data"); 1196 of_platform_default_populate(np, NULL, NULL); 1197 1198 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1199 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1200 pdev = of_find_device_by_node(np); 1201 unittest(pdev, "device 1 creation failed\n"); 1202 1203 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1204 irq = platform_get_irq(pdev, 0); 1205 unittest(irq == -EPROBE_DEFER, 1206 "device deferred probe failed - %d\n", irq); 1207 1208 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1209 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1210 pdev = of_find_device_by_node(np); 1211 unittest(pdev, "device 2 creation failed\n"); 1212 1213 EXPECT_BEGIN(KERN_INFO, 1214 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1215 1216 irq = platform_get_irq(pdev, 0); 1217 1218 EXPECT_END(KERN_INFO, 1219 "platform testcase-data:testcase-device2: IRQ index 0 not found"); 1220 1221 unittest(irq < 0 && irq != -EPROBE_DEFER, 1222 "device parsing error failed - %d\n", irq); 1223 } 1224 1225 np = of_find_node_by_path("/testcase-data/platform-tests"); 1226 unittest(np, "No testcase data in device tree\n"); 1227 if (!np) 1228 return; 1229 1230 test_bus = platform_device_register_full(&test_bus_info); 1231 rc = PTR_ERR_OR_ZERO(test_bus); 1232 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1233 if (rc) { 1234 of_node_put(np); 1235 return; 1236 } 1237 test_bus->dev.of_node = np; 1238 1239 /* 1240 * Add a dummy resource to the test bus node after it is 1241 * registered to catch problems with un-inserted resources. The 1242 * DT code doesn't insert the resources, and it has caused the 1243 * kernel to oops in the past. This makes sure the same bug 1244 * doesn't crop up again. 1245 */ 1246 platform_device_add_resources(test_bus, &test_bus_res, 1); 1247 1248 of_platform_populate(np, match, NULL, &test_bus->dev); 1249 for_each_child_of_node(np, child) { 1250 for_each_child_of_node(child, grandchild) { 1251 pdev = of_find_device_by_node(grandchild); 1252 unittest(pdev, 1253 "Could not create device for node '%pOFn'\n", 1254 grandchild); 1255 of_dev_put(pdev); 1256 } 1257 } 1258 1259 of_platform_depopulate(&test_bus->dev); 1260 for_each_child_of_node(np, child) { 1261 for_each_child_of_node(child, grandchild) 1262 unittest(!of_find_device_by_node(grandchild), 1263 "device didn't get destroyed '%pOFn'\n", 1264 grandchild); 1265 } 1266 1267 platform_device_unregister(test_bus); 1268 of_node_put(np); 1269 } 1270 1271 /** 1272 * update_node_properties - adds the properties 1273 * of np into dup node (present in live tree) and 1274 * updates parent of children of np to dup. 1275 * 1276 * @np: node whose properties are being added to the live tree 1277 * @dup: node present in live tree to be updated 1278 */ 1279 static void update_node_properties(struct device_node *np, 1280 struct device_node *dup) 1281 { 1282 struct property *prop; 1283 struct property *save_next; 1284 struct device_node *child; 1285 int ret; 1286 1287 for_each_child_of_node(np, child) 1288 child->parent = dup; 1289 1290 /* 1291 * "unittest internal error: unable to add testdata property" 1292 * 1293 * If this message reports a property in node '/__symbols__' then 1294 * the respective unittest overlay contains a label that has the 1295 * same name as a label in the live devicetree. The label will 1296 * be in the live devicetree only if the devicetree source was 1297 * compiled with the '-@' option. If you encounter this error, 1298 * please consider renaming __all__ of the labels in the unittest 1299 * overlay dts files with an odd prefix that is unlikely to be 1300 * used in a real devicetree. 1301 */ 1302 1303 /* 1304 * open code for_each_property_of_node() because of_add_property() 1305 * sets prop->next to NULL 1306 */ 1307 for (prop = np->properties; prop != NULL; prop = save_next) { 1308 save_next = prop->next; 1309 ret = of_add_property(dup, prop); 1310 if (ret) { 1311 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1312 continue; 1313 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1314 np, prop->name); 1315 } 1316 } 1317 } 1318 1319 /** 1320 * attach_node_and_children - attaches nodes 1321 * and its children to live tree. 1322 * CAUTION: misleading function name - if node @np already exists in 1323 * the live tree then children of @np are *not* attached to the live 1324 * tree. This works for the current test devicetree nodes because such 1325 * nodes do not have child nodes. 1326 * 1327 * @np: Node to attach to live tree 1328 */ 1329 static void attach_node_and_children(struct device_node *np) 1330 { 1331 struct device_node *next, *dup, *child; 1332 unsigned long flags; 1333 const char *full_name; 1334 1335 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1336 1337 if (!strcmp(full_name, "/__local_fixups__") || 1338 !strcmp(full_name, "/__fixups__")) { 1339 kfree(full_name); 1340 return; 1341 } 1342 1343 dup = of_find_node_by_path(full_name); 1344 kfree(full_name); 1345 if (dup) { 1346 update_node_properties(np, dup); 1347 return; 1348 } 1349 1350 child = np->child; 1351 np->child = NULL; 1352 1353 mutex_lock(&of_mutex); 1354 raw_spin_lock_irqsave(&devtree_lock, flags); 1355 np->sibling = np->parent->child; 1356 np->parent->child = np; 1357 of_node_clear_flag(np, OF_DETACHED); 1358 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1359 1360 __of_attach_node_sysfs(np); 1361 mutex_unlock(&of_mutex); 1362 1363 while (child) { 1364 next = child->sibling; 1365 attach_node_and_children(child); 1366 child = next; 1367 } 1368 } 1369 1370 /** 1371 * unittest_data_add - Reads, copies data from 1372 * linked tree and attaches it to the live tree 1373 */ 1374 static int __init unittest_data_add(void) 1375 { 1376 void *unittest_data; 1377 struct device_node *unittest_data_node, *np; 1378 /* 1379 * __dtb_testcases_begin[] and __dtb_testcases_end[] are magically 1380 * created by cmd_dt_S_dtb in scripts/Makefile.lib 1381 */ 1382 extern uint8_t __dtb_testcases_begin[]; 1383 extern uint8_t __dtb_testcases_end[]; 1384 const int size = __dtb_testcases_end - __dtb_testcases_begin; 1385 int rc; 1386 1387 if (!size) { 1388 pr_warn("%s: No testcase data to attach; not running tests\n", 1389 __func__); 1390 return -ENODATA; 1391 } 1392 1393 /* creating copy */ 1394 unittest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL); 1395 if (!unittest_data) 1396 return -ENOMEM; 1397 1398 of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node); 1399 if (!unittest_data_node) { 1400 pr_warn("%s: No tree to attach; not running tests\n", __func__); 1401 kfree(unittest_data); 1402 return -ENODATA; 1403 } 1404 1405 /* 1406 * This lock normally encloses of_resolve_phandles() 1407 */ 1408 of_overlay_mutex_lock(); 1409 1410 rc = of_resolve_phandles(unittest_data_node); 1411 if (rc) { 1412 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 1413 of_overlay_mutex_unlock(); 1414 return -EINVAL; 1415 } 1416 1417 if (!of_root) { 1418 of_root = unittest_data_node; 1419 for_each_of_allnodes(np) 1420 __of_attach_node_sysfs(np); 1421 of_aliases = of_find_node_by_path("/aliases"); 1422 of_chosen = of_find_node_by_path("/chosen"); 1423 of_overlay_mutex_unlock(); 1424 return 0; 1425 } 1426 1427 EXPECT_BEGIN(KERN_INFO, 1428 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1429 1430 /* attach the sub-tree to live tree */ 1431 np = unittest_data_node->child; 1432 while (np) { 1433 struct device_node *next = np->sibling; 1434 1435 np->parent = of_root; 1436 attach_node_and_children(np); 1437 np = next; 1438 } 1439 1440 EXPECT_END(KERN_INFO, 1441 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 1442 1443 of_overlay_mutex_unlock(); 1444 1445 return 0; 1446 } 1447 1448 #ifdef CONFIG_OF_OVERLAY 1449 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id); 1450 1451 static int unittest_probe(struct platform_device *pdev) 1452 { 1453 struct device *dev = &pdev->dev; 1454 struct device_node *np = dev->of_node; 1455 1456 if (np == NULL) { 1457 dev_err(dev, "No OF data for device\n"); 1458 return -EINVAL; 1459 1460 } 1461 1462 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1463 1464 of_platform_populate(np, NULL, NULL, &pdev->dev); 1465 1466 return 0; 1467 } 1468 1469 static int unittest_remove(struct platform_device *pdev) 1470 { 1471 struct device *dev = &pdev->dev; 1472 struct device_node *np = dev->of_node; 1473 1474 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1475 return 0; 1476 } 1477 1478 static const struct of_device_id unittest_match[] = { 1479 { .compatible = "unittest", }, 1480 {}, 1481 }; 1482 1483 static struct platform_driver unittest_driver = { 1484 .probe = unittest_probe, 1485 .remove = unittest_remove, 1486 .driver = { 1487 .name = "unittest", 1488 .of_match_table = of_match_ptr(unittest_match), 1489 }, 1490 }; 1491 1492 /* get the platform device instantiated at the path */ 1493 static struct platform_device *of_path_to_platform_device(const char *path) 1494 { 1495 struct device_node *np; 1496 struct platform_device *pdev; 1497 1498 np = of_find_node_by_path(path); 1499 if (np == NULL) 1500 return NULL; 1501 1502 pdev = of_find_device_by_node(np); 1503 of_node_put(np); 1504 1505 return pdev; 1506 } 1507 1508 /* find out if a platform device exists at that path */ 1509 static int of_path_platform_device_exists(const char *path) 1510 { 1511 struct platform_device *pdev; 1512 1513 pdev = of_path_to_platform_device(path); 1514 platform_device_put(pdev); 1515 return pdev != NULL; 1516 } 1517 1518 #ifdef CONFIG_OF_GPIO 1519 1520 struct unittest_gpio_dev { 1521 struct gpio_chip chip; 1522 }; 1523 1524 static int unittest_gpio_chip_request_count; 1525 static int unittest_gpio_probe_count; 1526 static int unittest_gpio_probe_pass_count; 1527 1528 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 1529 { 1530 unittest_gpio_chip_request_count++; 1531 1532 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 1533 unittest_gpio_chip_request_count); 1534 return 0; 1535 } 1536 1537 static int unittest_gpio_probe(struct platform_device *pdev) 1538 { 1539 struct unittest_gpio_dev *devptr; 1540 int ret; 1541 1542 unittest_gpio_probe_count++; 1543 1544 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 1545 if (!devptr) 1546 return -ENOMEM; 1547 1548 platform_set_drvdata(pdev, devptr); 1549 1550 devptr->chip.of_node = pdev->dev.of_node; 1551 devptr->chip.label = "of-unittest-gpio"; 1552 devptr->chip.base = -1; /* dynamic allocation */ 1553 devptr->chip.ngpio = 5; 1554 devptr->chip.request = unittest_gpio_chip_request; 1555 1556 ret = gpiochip_add_data(&devptr->chip, NULL); 1557 1558 unittest(!ret, 1559 "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); 1560 1561 if (!ret) 1562 unittest_gpio_probe_pass_count++; 1563 return ret; 1564 } 1565 1566 static int unittest_gpio_remove(struct platform_device *pdev) 1567 { 1568 struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); 1569 struct device *dev = &pdev->dev; 1570 struct device_node *np = pdev->dev.of_node; 1571 1572 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 1573 1574 if (!gdev) 1575 return -EINVAL; 1576 1577 if (gdev->chip.base != -1) 1578 gpiochip_remove(&gdev->chip); 1579 1580 platform_set_drvdata(pdev, NULL); 1581 kfree(gdev); 1582 1583 return 0; 1584 } 1585 1586 static const struct of_device_id unittest_gpio_id[] = { 1587 { .compatible = "unittest-gpio", }, 1588 {} 1589 }; 1590 1591 static struct platform_driver unittest_gpio_driver = { 1592 .probe = unittest_gpio_probe, 1593 .remove = unittest_gpio_remove, 1594 .driver = { 1595 .name = "unittest-gpio", 1596 .of_match_table = of_match_ptr(unittest_gpio_id), 1597 }, 1598 }; 1599 1600 static void __init of_unittest_overlay_gpio(void) 1601 { 1602 int chip_request_count; 1603 int probe_pass_count; 1604 int ret; 1605 1606 /* 1607 * tests: apply overlays before registering driver 1608 * Similar to installing a driver as a module, the 1609 * driver is registered after applying the overlays. 1610 * 1611 * The overlays are applied by overlay_data_apply() 1612 * instead of of_unittest_apply_overlay() so that they 1613 * will not be tracked. Thus they will not be removed 1614 * by of_unittest_destroy_tracked_overlays(). 1615 * 1616 * - apply overlay_gpio_01 1617 * - apply overlay_gpio_02a 1618 * - apply overlay_gpio_02b 1619 * - register driver 1620 * 1621 * register driver will result in 1622 * - probe and processing gpio hog for overlay_gpio_01 1623 * - probe for overlay_gpio_02a 1624 * - processing gpio for overlay_gpio_02b 1625 */ 1626 1627 probe_pass_count = unittest_gpio_probe_pass_count; 1628 chip_request_count = unittest_gpio_chip_request_count; 1629 1630 /* 1631 * overlay_gpio_01 contains gpio node and child gpio hog node 1632 * overlay_gpio_02a contains gpio node 1633 * overlay_gpio_02b contains child gpio hog node 1634 */ 1635 1636 unittest(overlay_data_apply("overlay_gpio_01", NULL), 1637 "Adding overlay 'overlay_gpio_01' failed\n"); 1638 1639 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 1640 "Adding overlay 'overlay_gpio_02a' failed\n"); 1641 1642 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 1643 "Adding overlay 'overlay_gpio_02b' failed\n"); 1644 1645 /* 1646 * messages are the result of the probes, after the 1647 * driver is registered 1648 */ 1649 1650 EXPECT_BEGIN(KERN_INFO, 1651 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1652 1653 EXPECT_BEGIN(KERN_INFO, 1654 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1655 1656 ret = platform_driver_register(&unittest_gpio_driver); 1657 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 1658 return; 1659 1660 EXPECT_END(KERN_INFO, 1661 "GPIO line <<int>> (line-A-input) hogged as input\n"); 1662 EXPECT_END(KERN_INFO, 1663 "GPIO line <<int>> (line-B-input) hogged as input\n"); 1664 1665 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 1666 "unittest_gpio_probe() failed or not called\n"); 1667 1668 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 1669 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1670 unittest_gpio_chip_request_count - chip_request_count); 1671 1672 /* 1673 * tests: apply overlays after registering driver 1674 * 1675 * Similar to a driver built-in to the kernel, the 1676 * driver is registered before applying the overlays. 1677 * 1678 * overlay_gpio_03 contains gpio node and child gpio hog node 1679 * 1680 * - apply overlay_gpio_03 1681 * 1682 * apply overlay will result in 1683 * - probe and processing gpio hog. 1684 */ 1685 1686 probe_pass_count = unittest_gpio_probe_pass_count; 1687 chip_request_count = unittest_gpio_chip_request_count; 1688 1689 EXPECT_BEGIN(KERN_INFO, 1690 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1691 1692 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 1693 1694 unittest(overlay_data_apply("overlay_gpio_03", NULL), 1695 "Adding overlay 'overlay_gpio_03' failed\n"); 1696 1697 EXPECT_END(KERN_INFO, 1698 "GPIO line <<int>> (line-D-input) hogged as input\n"); 1699 1700 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1701 "unittest_gpio_probe() failed or not called\n"); 1702 1703 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1704 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1705 unittest_gpio_chip_request_count - chip_request_count); 1706 1707 /* 1708 * overlay_gpio_04a contains gpio node 1709 * 1710 * - apply overlay_gpio_04a 1711 * 1712 * apply the overlay will result in 1713 * - probe for overlay_gpio_04a 1714 */ 1715 1716 probe_pass_count = unittest_gpio_probe_pass_count; 1717 chip_request_count = unittest_gpio_chip_request_count; 1718 1719 /* overlay_gpio_04a contains gpio node */ 1720 1721 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 1722 "Adding overlay 'overlay_gpio_04a' failed\n"); 1723 1724 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 1725 "unittest_gpio_probe() failed or not called\n"); 1726 1727 /* 1728 * overlay_gpio_04b contains child gpio hog node 1729 * 1730 * - apply overlay_gpio_04b 1731 * 1732 * apply the overlay will result in 1733 * - processing gpio for overlay_gpio_04b 1734 */ 1735 1736 EXPECT_BEGIN(KERN_INFO, 1737 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1738 1739 /* overlay_gpio_04b contains child gpio hog node */ 1740 1741 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 1742 "Adding overlay 'overlay_gpio_04b' failed\n"); 1743 1744 EXPECT_END(KERN_INFO, 1745 "GPIO line <<int>> (line-C-input) hogged as input\n"); 1746 1747 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 1748 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 1749 unittest_gpio_chip_request_count - chip_request_count); 1750 } 1751 1752 #else 1753 1754 static void __init of_unittest_overlay_gpio(void) 1755 { 1756 /* skip tests */ 1757 } 1758 1759 #endif 1760 1761 #if IS_BUILTIN(CONFIG_I2C) 1762 1763 /* get the i2c client device instantiated at the path */ 1764 static struct i2c_client *of_path_to_i2c_client(const char *path) 1765 { 1766 struct device_node *np; 1767 struct i2c_client *client; 1768 1769 np = of_find_node_by_path(path); 1770 if (np == NULL) 1771 return NULL; 1772 1773 client = of_find_i2c_device_by_node(np); 1774 of_node_put(np); 1775 1776 return client; 1777 } 1778 1779 /* find out if a i2c client device exists at that path */ 1780 static int of_path_i2c_client_exists(const char *path) 1781 { 1782 struct i2c_client *client; 1783 1784 client = of_path_to_i2c_client(path); 1785 if (client) 1786 put_device(&client->dev); 1787 return client != NULL; 1788 } 1789 #else 1790 static int of_path_i2c_client_exists(const char *path) 1791 { 1792 return 0; 1793 } 1794 #endif 1795 1796 enum overlay_type { 1797 PDEV_OVERLAY, 1798 I2C_OVERLAY 1799 }; 1800 1801 static int of_path_device_type_exists(const char *path, 1802 enum overlay_type ovtype) 1803 { 1804 switch (ovtype) { 1805 case PDEV_OVERLAY: 1806 return of_path_platform_device_exists(path); 1807 case I2C_OVERLAY: 1808 return of_path_i2c_client_exists(path); 1809 } 1810 return 0; 1811 } 1812 1813 static const char *unittest_path(int nr, enum overlay_type ovtype) 1814 { 1815 const char *base; 1816 static char buf[256]; 1817 1818 switch (ovtype) { 1819 case PDEV_OVERLAY: 1820 base = "/testcase-data/overlay-node/test-bus"; 1821 break; 1822 case I2C_OVERLAY: 1823 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 1824 break; 1825 default: 1826 buf[0] = '\0'; 1827 return buf; 1828 } 1829 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 1830 buf[sizeof(buf) - 1] = '\0'; 1831 return buf; 1832 } 1833 1834 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 1835 { 1836 const char *path; 1837 1838 path = unittest_path(unittest_nr, ovtype); 1839 1840 switch (ovtype) { 1841 case PDEV_OVERLAY: 1842 return of_path_platform_device_exists(path); 1843 case I2C_OVERLAY: 1844 return of_path_i2c_client_exists(path); 1845 } 1846 return 0; 1847 } 1848 1849 static const char *overlay_name_from_nr(int nr) 1850 { 1851 static char buf[256]; 1852 1853 snprintf(buf, sizeof(buf) - 1, 1854 "overlay_%d", nr); 1855 buf[sizeof(buf) - 1] = '\0'; 1856 1857 return buf; 1858 } 1859 1860 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 1861 1862 /* FIXME: it is NOT guaranteed that overlay ids are assigned in sequence */ 1863 1864 #define MAX_UNITTEST_OVERLAYS 256 1865 static unsigned long overlay_id_bits[BITS_TO_LONGS(MAX_UNITTEST_OVERLAYS)]; 1866 static int overlay_first_id = -1; 1867 1868 static long of_unittest_overlay_tracked(int id) 1869 { 1870 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1871 return 0; 1872 return overlay_id_bits[BIT_WORD(id)] & BIT_MASK(id); 1873 } 1874 1875 static void of_unittest_track_overlay(int id) 1876 { 1877 if (overlay_first_id < 0) 1878 overlay_first_id = id; 1879 id -= overlay_first_id; 1880 1881 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1882 return; 1883 overlay_id_bits[BIT_WORD(id)] |= BIT_MASK(id); 1884 } 1885 1886 static void of_unittest_untrack_overlay(int id) 1887 { 1888 if (overlay_first_id < 0) 1889 return; 1890 id -= overlay_first_id; 1891 if (WARN_ON(id >= MAX_UNITTEST_OVERLAYS)) 1892 return; 1893 overlay_id_bits[BIT_WORD(id)] &= ~BIT_MASK(id); 1894 } 1895 1896 static void of_unittest_destroy_tracked_overlays(void) 1897 { 1898 int id, ret, defers, ovcs_id; 1899 1900 if (overlay_first_id < 0) 1901 return; 1902 1903 /* try until no defers */ 1904 do { 1905 defers = 0; 1906 /* remove in reverse order */ 1907 for (id = MAX_UNITTEST_OVERLAYS - 1; id >= 0; id--) { 1908 if (!of_unittest_overlay_tracked(id)) 1909 continue; 1910 1911 ovcs_id = id + overlay_first_id; 1912 ret = of_overlay_remove(&ovcs_id); 1913 if (ret == -ENODEV) { 1914 pr_warn("%s: no overlay to destroy for #%d\n", 1915 __func__, id + overlay_first_id); 1916 continue; 1917 } 1918 if (ret != 0) { 1919 defers++; 1920 pr_warn("%s: overlay destroy failed for #%d\n", 1921 __func__, id + overlay_first_id); 1922 continue; 1923 } 1924 1925 of_unittest_untrack_overlay(id); 1926 } 1927 } while (defers > 0); 1928 } 1929 1930 static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id) 1931 { 1932 const char *overlay_name; 1933 1934 overlay_name = overlay_name_from_nr(overlay_nr); 1935 1936 if (!overlay_data_apply(overlay_name, overlay_id)) { 1937 unittest(0, "could not apply overlay \"%s\"\n", 1938 overlay_name); 1939 return -EFAULT; 1940 } 1941 of_unittest_track_overlay(*overlay_id); 1942 1943 return 0; 1944 } 1945 1946 /* apply an overlay while checking before and after states */ 1947 static int __init of_unittest_apply_overlay_check(int overlay_nr, 1948 int unittest_nr, int before, int after, 1949 enum overlay_type ovtype) 1950 { 1951 int ret, ovcs_id; 1952 1953 /* unittest device must not be in before state */ 1954 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1955 unittest(0, "%s with device @\"%s\" %s\n", 1956 overlay_name_from_nr(overlay_nr), 1957 unittest_path(unittest_nr, ovtype), 1958 !before ? "enabled" : "disabled"); 1959 return -EINVAL; 1960 } 1961 1962 ovcs_id = 0; 1963 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 1964 if (ret != 0) { 1965 /* of_unittest_apply_overlay already called unittest() */ 1966 return ret; 1967 } 1968 1969 /* unittest device must be to set to after state */ 1970 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 1971 unittest(0, "%s failed to create @\"%s\" %s\n", 1972 overlay_name_from_nr(overlay_nr), 1973 unittest_path(unittest_nr, ovtype), 1974 !after ? "enabled" : "disabled"); 1975 return -EINVAL; 1976 } 1977 1978 return 0; 1979 } 1980 1981 /* apply an overlay and then revert it while checking before, after states */ 1982 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 1983 int unittest_nr, int before, int after, 1984 enum overlay_type ovtype) 1985 { 1986 int ret, ovcs_id, save_id; 1987 1988 /* unittest device must be in before state */ 1989 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 1990 unittest(0, "%s with device @\"%s\" %s\n", 1991 overlay_name_from_nr(overlay_nr), 1992 unittest_path(unittest_nr, ovtype), 1993 !before ? "enabled" : "disabled"); 1994 return -EINVAL; 1995 } 1996 1997 /* apply the overlay */ 1998 ovcs_id = 0; 1999 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2000 if (ret != 0) { 2001 /* of_unittest_apply_overlay already called unittest() */ 2002 return ret; 2003 } 2004 2005 /* unittest device must be in after state */ 2006 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2007 unittest(0, "%s failed to create @\"%s\" %s\n", 2008 overlay_name_from_nr(overlay_nr), 2009 unittest_path(unittest_nr, ovtype), 2010 !after ? "enabled" : "disabled"); 2011 return -EINVAL; 2012 } 2013 2014 save_id = ovcs_id; 2015 ret = of_overlay_remove(&ovcs_id); 2016 if (ret != 0) { 2017 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2018 overlay_name_from_nr(overlay_nr), 2019 unittest_path(unittest_nr, ovtype)); 2020 return ret; 2021 } 2022 of_unittest_untrack_overlay(save_id); 2023 2024 /* unittest device must be again in before state */ 2025 if (of_unittest_device_exists(unittest_nr, PDEV_OVERLAY) != before) { 2026 unittest(0, "%s with device @\"%s\" %s\n", 2027 overlay_name_from_nr(overlay_nr), 2028 unittest_path(unittest_nr, ovtype), 2029 !before ? "enabled" : "disabled"); 2030 return -EINVAL; 2031 } 2032 2033 return 0; 2034 } 2035 2036 /* test activation of device */ 2037 static void __init of_unittest_overlay_0(void) 2038 { 2039 int ret; 2040 2041 EXPECT_BEGIN(KERN_INFO, 2042 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2043 2044 /* device should enable */ 2045 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2046 2047 EXPECT_END(KERN_INFO, 2048 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2049 2050 if (ret) 2051 return; 2052 2053 unittest(1, "overlay test %d passed\n", 0); 2054 } 2055 2056 /* test deactivation of device */ 2057 static void __init of_unittest_overlay_1(void) 2058 { 2059 int ret; 2060 2061 EXPECT_BEGIN(KERN_INFO, 2062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2063 2064 /* device should disable */ 2065 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2066 2067 EXPECT_END(KERN_INFO, 2068 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2069 2070 if (ret) 2071 return; 2072 2073 unittest(1, "overlay test %d passed\n", 1); 2074 2075 } 2076 2077 /* test activation of device */ 2078 static void __init of_unittest_overlay_2(void) 2079 { 2080 int ret; 2081 2082 EXPECT_BEGIN(KERN_INFO, 2083 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2084 2085 /* device should enable */ 2086 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2087 2088 EXPECT_END(KERN_INFO, 2089 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2090 2091 if (ret) 2092 return; 2093 unittest(1, "overlay test %d passed\n", 2); 2094 } 2095 2096 /* test deactivation of device */ 2097 static void __init of_unittest_overlay_3(void) 2098 { 2099 int ret; 2100 2101 EXPECT_BEGIN(KERN_INFO, 2102 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2103 2104 /* device should disable */ 2105 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2106 2107 EXPECT_END(KERN_INFO, 2108 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2109 2110 if (ret) 2111 return; 2112 2113 unittest(1, "overlay test %d passed\n", 3); 2114 } 2115 2116 /* test activation of a full device node */ 2117 static void __init of_unittest_overlay_4(void) 2118 { 2119 /* device should disable */ 2120 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2121 return; 2122 2123 unittest(1, "overlay test %d passed\n", 4); 2124 } 2125 2126 /* test overlay apply/revert sequence */ 2127 static void __init of_unittest_overlay_5(void) 2128 { 2129 int ret; 2130 2131 EXPECT_BEGIN(KERN_INFO, 2132 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2133 2134 /* device should disable */ 2135 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2136 2137 EXPECT_END(KERN_INFO, 2138 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2139 2140 if (ret) 2141 return; 2142 2143 unittest(1, "overlay test %d passed\n", 5); 2144 } 2145 2146 /* test overlay application in sequence */ 2147 static void __init of_unittest_overlay_6(void) 2148 { 2149 int i, ov_id[2], ovcs_id; 2150 int overlay_nr = 6, unittest_nr = 6; 2151 int before = 0, after = 1; 2152 const char *overlay_name; 2153 2154 int ret; 2155 2156 /* unittest device must be in before state */ 2157 for (i = 0; i < 2; i++) { 2158 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2159 != before) { 2160 unittest(0, "%s with device @\"%s\" %s\n", 2161 overlay_name_from_nr(overlay_nr + i), 2162 unittest_path(unittest_nr + i, 2163 PDEV_OVERLAY), 2164 !before ? "enabled" : "disabled"); 2165 return; 2166 } 2167 } 2168 2169 /* apply the overlays */ 2170 2171 EXPECT_BEGIN(KERN_INFO, 2172 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2173 2174 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2175 2176 ret = overlay_data_apply(overlay_name, &ovcs_id); 2177 2178 if (!ret) { 2179 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2180 return; 2181 } 2182 ov_id[0] = ovcs_id; 2183 of_unittest_track_overlay(ov_id[0]); 2184 2185 EXPECT_END(KERN_INFO, 2186 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2187 2188 EXPECT_BEGIN(KERN_INFO, 2189 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2190 2191 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2192 2193 ret = overlay_data_apply(overlay_name, &ovcs_id); 2194 2195 if (!ret) { 2196 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2197 return; 2198 } 2199 ov_id[1] = ovcs_id; 2200 of_unittest_track_overlay(ov_id[1]); 2201 2202 EXPECT_END(KERN_INFO, 2203 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2204 2205 2206 for (i = 0; i < 2; i++) { 2207 /* unittest device must be in after state */ 2208 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2209 != after) { 2210 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2211 overlay_name_from_nr(overlay_nr + i), 2212 unittest_path(unittest_nr + i, 2213 PDEV_OVERLAY), 2214 !after ? "enabled" : "disabled"); 2215 return; 2216 } 2217 } 2218 2219 for (i = 1; i >= 0; i--) { 2220 ovcs_id = ov_id[i]; 2221 if (of_overlay_remove(&ovcs_id)) { 2222 unittest(0, "%s failed destroy @\"%s\"\n", 2223 overlay_name_from_nr(overlay_nr + i), 2224 unittest_path(unittest_nr + i, 2225 PDEV_OVERLAY)); 2226 return; 2227 } 2228 of_unittest_untrack_overlay(ov_id[i]); 2229 } 2230 2231 for (i = 0; i < 2; i++) { 2232 /* unittest device must be again in before state */ 2233 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2234 != before) { 2235 unittest(0, "%s with device @\"%s\" %s\n", 2236 overlay_name_from_nr(overlay_nr + i), 2237 unittest_path(unittest_nr + i, 2238 PDEV_OVERLAY), 2239 !before ? "enabled" : "disabled"); 2240 return; 2241 } 2242 } 2243 2244 unittest(1, "overlay test %d passed\n", 6); 2245 2246 } 2247 2248 /* test overlay application in sequence */ 2249 static void __init of_unittest_overlay_8(void) 2250 { 2251 int i, ov_id[2], ovcs_id; 2252 int overlay_nr = 8, unittest_nr = 8; 2253 const char *overlay_name; 2254 int ret; 2255 2256 /* we don't care about device state in this test */ 2257 2258 EXPECT_BEGIN(KERN_INFO, 2259 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2260 2261 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2262 2263 ret = overlay_data_apply(overlay_name, &ovcs_id); 2264 if (!ret) 2265 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2266 2267 EXPECT_END(KERN_INFO, 2268 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2269 2270 if (!ret) 2271 return; 2272 2273 ov_id[0] = ovcs_id; 2274 of_unittest_track_overlay(ov_id[0]); 2275 2276 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2277 2278 EXPECT_BEGIN(KERN_INFO, 2279 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2280 2281 /* apply the overlays */ 2282 ret = overlay_data_apply(overlay_name, &ovcs_id); 2283 2284 EXPECT_END(KERN_INFO, 2285 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2286 2287 if (!ret) { 2288 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2289 return; 2290 } 2291 2292 ov_id[1] = ovcs_id; 2293 of_unittest_track_overlay(ov_id[1]); 2294 2295 /* now try to remove first overlay (it should fail) */ 2296 ovcs_id = ov_id[0]; 2297 2298 EXPECT_BEGIN(KERN_INFO, 2299 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2300 2301 EXPECT_BEGIN(KERN_INFO, 2302 "OF: overlay: overlay #6 is not topmost"); 2303 2304 ret = of_overlay_remove(&ovcs_id); 2305 2306 EXPECT_END(KERN_INFO, 2307 "OF: overlay: overlay #6 is not topmost"); 2308 2309 EXPECT_END(KERN_INFO, 2310 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2311 2312 if (!ret) { 2313 unittest(0, "%s was destroyed @\"%s\"\n", 2314 overlay_name_from_nr(overlay_nr + 0), 2315 unittest_path(unittest_nr, 2316 PDEV_OVERLAY)); 2317 return; 2318 } 2319 2320 /* removing them in order should work */ 2321 for (i = 1; i >= 0; i--) { 2322 ovcs_id = ov_id[i]; 2323 if (of_overlay_remove(&ovcs_id)) { 2324 unittest(0, "%s not destroyed @\"%s\"\n", 2325 overlay_name_from_nr(overlay_nr + i), 2326 unittest_path(unittest_nr, 2327 PDEV_OVERLAY)); 2328 return; 2329 } 2330 of_unittest_untrack_overlay(ov_id[i]); 2331 } 2332 2333 unittest(1, "overlay test %d passed\n", 8); 2334 } 2335 2336 /* test insertion of a bus with parent devices */ 2337 static void __init of_unittest_overlay_10(void) 2338 { 2339 int ret; 2340 char *child_path; 2341 2342 /* device should disable */ 2343 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2344 2345 if (unittest(ret == 0, 2346 "overlay test %d failed; overlay application\n", 10)) 2347 return; 2348 2349 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2350 unittest_path(10, PDEV_OVERLAY)); 2351 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2352 return; 2353 2354 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2355 kfree(child_path); 2356 2357 unittest(ret, "overlay test %d failed; no child device\n", 10); 2358 } 2359 2360 /* test insertion of a bus with parent devices (and revert) */ 2361 static void __init of_unittest_overlay_11(void) 2362 { 2363 int ret; 2364 2365 /* device should disable */ 2366 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2367 PDEV_OVERLAY); 2368 2369 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2370 } 2371 2372 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2373 2374 struct unittest_i2c_bus_data { 2375 struct platform_device *pdev; 2376 struct i2c_adapter adap; 2377 }; 2378 2379 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2380 struct i2c_msg *msgs, int num) 2381 { 2382 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2383 2384 (void)std; 2385 2386 return num; 2387 } 2388 2389 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2390 { 2391 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2392 } 2393 2394 static const struct i2c_algorithm unittest_i2c_algo = { 2395 .master_xfer = unittest_i2c_master_xfer, 2396 .functionality = unittest_i2c_functionality, 2397 }; 2398 2399 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2400 { 2401 struct device *dev = &pdev->dev; 2402 struct device_node *np = dev->of_node; 2403 struct unittest_i2c_bus_data *std; 2404 struct i2c_adapter *adap; 2405 int ret; 2406 2407 if (np == NULL) { 2408 dev_err(dev, "No OF data for device\n"); 2409 return -EINVAL; 2410 2411 } 2412 2413 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2414 2415 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2416 if (!std) 2417 return -ENOMEM; 2418 2419 /* link them together */ 2420 std->pdev = pdev; 2421 platform_set_drvdata(pdev, std); 2422 2423 adap = &std->adap; 2424 i2c_set_adapdata(adap, std); 2425 adap->nr = -1; 2426 strlcpy(adap->name, pdev->name, sizeof(adap->name)); 2427 adap->class = I2C_CLASS_DEPRECATED; 2428 adap->algo = &unittest_i2c_algo; 2429 adap->dev.parent = dev; 2430 adap->dev.of_node = dev->of_node; 2431 adap->timeout = 5 * HZ; 2432 adap->retries = 3; 2433 2434 ret = i2c_add_numbered_adapter(adap); 2435 if (ret != 0) { 2436 dev_err(dev, "Failed to add I2C adapter\n"); 2437 return ret; 2438 } 2439 2440 return 0; 2441 } 2442 2443 static int unittest_i2c_bus_remove(struct platform_device *pdev) 2444 { 2445 struct device *dev = &pdev->dev; 2446 struct device_node *np = dev->of_node; 2447 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 2448 2449 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2450 i2c_del_adapter(&std->adap); 2451 2452 return 0; 2453 } 2454 2455 static const struct of_device_id unittest_i2c_bus_match[] = { 2456 { .compatible = "unittest-i2c-bus", }, 2457 {}, 2458 }; 2459 2460 static struct platform_driver unittest_i2c_bus_driver = { 2461 .probe = unittest_i2c_bus_probe, 2462 .remove = unittest_i2c_bus_remove, 2463 .driver = { 2464 .name = "unittest-i2c-bus", 2465 .of_match_table = of_match_ptr(unittest_i2c_bus_match), 2466 }, 2467 }; 2468 2469 static int unittest_i2c_dev_probe(struct i2c_client *client, 2470 const struct i2c_device_id *id) 2471 { 2472 struct device *dev = &client->dev; 2473 struct device_node *np = client->dev.of_node; 2474 2475 if (!np) { 2476 dev_err(dev, "No OF node\n"); 2477 return -EINVAL; 2478 } 2479 2480 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2481 2482 return 0; 2483 }; 2484 2485 static int unittest_i2c_dev_remove(struct i2c_client *client) 2486 { 2487 struct device *dev = &client->dev; 2488 struct device_node *np = client->dev.of_node; 2489 2490 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2491 return 0; 2492 } 2493 2494 static const struct i2c_device_id unittest_i2c_dev_id[] = { 2495 { .name = "unittest-i2c-dev" }, 2496 { } 2497 }; 2498 2499 static struct i2c_driver unittest_i2c_dev_driver = { 2500 .driver = { 2501 .name = "unittest-i2c-dev", 2502 }, 2503 .probe = unittest_i2c_dev_probe, 2504 .remove = unittest_i2c_dev_remove, 2505 .id_table = unittest_i2c_dev_id, 2506 }; 2507 2508 #if IS_BUILTIN(CONFIG_I2C_MUX) 2509 2510 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 2511 { 2512 return 0; 2513 } 2514 2515 static int unittest_i2c_mux_probe(struct i2c_client *client, 2516 const struct i2c_device_id *id) 2517 { 2518 int i, nchans; 2519 struct device *dev = &client->dev; 2520 struct i2c_adapter *adap = client->adapter; 2521 struct device_node *np = client->dev.of_node, *child; 2522 struct i2c_mux_core *muxc; 2523 u32 reg, max_reg; 2524 2525 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2526 2527 if (!np) { 2528 dev_err(dev, "No OF node\n"); 2529 return -EINVAL; 2530 } 2531 2532 max_reg = (u32)-1; 2533 for_each_child_of_node(np, child) { 2534 if (of_property_read_u32(child, "reg", ®)) 2535 continue; 2536 if (max_reg == (u32)-1 || reg > max_reg) 2537 max_reg = reg; 2538 } 2539 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 2540 if (nchans == 0) { 2541 dev_err(dev, "No channels\n"); 2542 return -EINVAL; 2543 } 2544 2545 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 2546 unittest_i2c_mux_select_chan, NULL); 2547 if (!muxc) 2548 return -ENOMEM; 2549 for (i = 0; i < nchans; i++) { 2550 if (i2c_mux_add_adapter(muxc, 0, i, 0)) { 2551 dev_err(dev, "Failed to register mux #%d\n", i); 2552 i2c_mux_del_adapters(muxc); 2553 return -ENODEV; 2554 } 2555 } 2556 2557 i2c_set_clientdata(client, muxc); 2558 2559 return 0; 2560 }; 2561 2562 static int unittest_i2c_mux_remove(struct i2c_client *client) 2563 { 2564 struct device *dev = &client->dev; 2565 struct device_node *np = client->dev.of_node; 2566 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 2567 2568 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2569 i2c_mux_del_adapters(muxc); 2570 return 0; 2571 } 2572 2573 static const struct i2c_device_id unittest_i2c_mux_id[] = { 2574 { .name = "unittest-i2c-mux" }, 2575 { } 2576 }; 2577 2578 static struct i2c_driver unittest_i2c_mux_driver = { 2579 .driver = { 2580 .name = "unittest-i2c-mux", 2581 }, 2582 .probe = unittest_i2c_mux_probe, 2583 .remove = unittest_i2c_mux_remove, 2584 .id_table = unittest_i2c_mux_id, 2585 }; 2586 2587 #endif 2588 2589 static int of_unittest_overlay_i2c_init(void) 2590 { 2591 int ret; 2592 2593 ret = i2c_add_driver(&unittest_i2c_dev_driver); 2594 if (unittest(ret == 0, 2595 "could not register unittest i2c device driver\n")) 2596 return ret; 2597 2598 ret = platform_driver_register(&unittest_i2c_bus_driver); 2599 2600 if (unittest(ret == 0, 2601 "could not register unittest i2c bus driver\n")) 2602 return ret; 2603 2604 #if IS_BUILTIN(CONFIG_I2C_MUX) 2605 2606 EXPECT_BEGIN(KERN_INFO, 2607 "i2c i2c-1: Added multiplexed i2c bus 2"); 2608 2609 ret = i2c_add_driver(&unittest_i2c_mux_driver); 2610 2611 EXPECT_END(KERN_INFO, 2612 "i2c i2c-1: Added multiplexed i2c bus 2"); 2613 2614 if (unittest(ret == 0, 2615 "could not register unittest i2c mux driver\n")) 2616 return ret; 2617 #endif 2618 2619 return 0; 2620 } 2621 2622 static void of_unittest_overlay_i2c_cleanup(void) 2623 { 2624 #if IS_BUILTIN(CONFIG_I2C_MUX) 2625 i2c_del_driver(&unittest_i2c_mux_driver); 2626 #endif 2627 platform_driver_unregister(&unittest_i2c_bus_driver); 2628 i2c_del_driver(&unittest_i2c_dev_driver); 2629 } 2630 2631 static void __init of_unittest_overlay_i2c_12(void) 2632 { 2633 int ret; 2634 2635 /* device should enable */ 2636 EXPECT_BEGIN(KERN_INFO, 2637 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2638 2639 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 2640 2641 EXPECT_END(KERN_INFO, 2642 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 2643 2644 if (ret) 2645 return; 2646 2647 unittest(1, "overlay test %d passed\n", 12); 2648 } 2649 2650 /* test deactivation of device */ 2651 static void __init of_unittest_overlay_i2c_13(void) 2652 { 2653 int ret; 2654 2655 EXPECT_BEGIN(KERN_INFO, 2656 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2657 2658 /* device should disable */ 2659 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 2660 2661 EXPECT_END(KERN_INFO, 2662 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 2663 2664 if (ret) 2665 return; 2666 2667 unittest(1, "overlay test %d passed\n", 13); 2668 } 2669 2670 /* just check for i2c mux existence */ 2671 static void of_unittest_overlay_i2c_14(void) 2672 { 2673 } 2674 2675 static void __init of_unittest_overlay_i2c_15(void) 2676 { 2677 int ret; 2678 2679 /* device should enable */ 2680 EXPECT_BEGIN(KERN_INFO, 2681 "i2c i2c-1: Added multiplexed i2c bus 3"); 2682 2683 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 2684 2685 EXPECT_END(KERN_INFO, 2686 "i2c i2c-1: Added multiplexed i2c bus 3"); 2687 2688 if (ret) 2689 return; 2690 2691 unittest(1, "overlay test %d passed\n", 15); 2692 } 2693 2694 #else 2695 2696 static inline void of_unittest_overlay_i2c_14(void) { } 2697 static inline void of_unittest_overlay_i2c_15(void) { } 2698 2699 #endif 2700 2701 static void __init of_unittest_overlay(void) 2702 { 2703 struct device_node *bus_np = NULL; 2704 2705 if (platform_driver_register(&unittest_driver)) { 2706 unittest(0, "could not register unittest driver\n"); 2707 goto out; 2708 } 2709 2710 bus_np = of_find_node_by_path(bus_path); 2711 if (bus_np == NULL) { 2712 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 2713 goto out; 2714 } 2715 2716 if (of_platform_default_populate(bus_np, NULL, NULL)) { 2717 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 2718 goto out; 2719 } 2720 2721 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 2722 unittest(0, "could not find unittest0 @ \"%s\"\n", 2723 unittest_path(100, PDEV_OVERLAY)); 2724 goto out; 2725 } 2726 2727 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 2728 unittest(0, "unittest1 @ \"%s\" should not exist\n", 2729 unittest_path(101, PDEV_OVERLAY)); 2730 goto out; 2731 } 2732 2733 unittest(1, "basic infrastructure of overlays passed"); 2734 2735 /* tests in sequence */ 2736 of_unittest_overlay_0(); 2737 of_unittest_overlay_1(); 2738 of_unittest_overlay_2(); 2739 of_unittest_overlay_3(); 2740 of_unittest_overlay_4(); 2741 of_unittest_overlay_5(); 2742 of_unittest_overlay_6(); 2743 of_unittest_overlay_8(); 2744 2745 of_unittest_overlay_10(); 2746 of_unittest_overlay_11(); 2747 2748 #if IS_BUILTIN(CONFIG_I2C) 2749 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 2750 goto out; 2751 2752 of_unittest_overlay_i2c_12(); 2753 of_unittest_overlay_i2c_13(); 2754 of_unittest_overlay_i2c_14(); 2755 of_unittest_overlay_i2c_15(); 2756 2757 of_unittest_overlay_i2c_cleanup(); 2758 #endif 2759 2760 of_unittest_overlay_gpio(); 2761 2762 of_unittest_destroy_tracked_overlays(); 2763 2764 out: 2765 of_node_put(bus_np); 2766 } 2767 2768 #else 2769 static inline void __init of_unittest_overlay(void) { } 2770 #endif 2771 2772 #ifdef CONFIG_OF_OVERLAY 2773 2774 /* 2775 * __dtb_ot_begin[] and __dtb_ot_end[] are created by cmd_dt_S_dtb 2776 * in scripts/Makefile.lib 2777 */ 2778 2779 #define OVERLAY_INFO_EXTERN(name) \ 2780 extern uint8_t __dtb_##name##_begin[]; \ 2781 extern uint8_t __dtb_##name##_end[] 2782 2783 #define OVERLAY_INFO(overlay_name, expected) \ 2784 { .dtb_begin = __dtb_##overlay_name##_begin, \ 2785 .dtb_end = __dtb_##overlay_name##_end, \ 2786 .expected_result = expected, \ 2787 .name = #overlay_name, \ 2788 } 2789 2790 struct overlay_info { 2791 uint8_t *dtb_begin; 2792 uint8_t *dtb_end; 2793 int expected_result; 2794 int overlay_id; 2795 char *name; 2796 }; 2797 2798 OVERLAY_INFO_EXTERN(overlay_base); 2799 OVERLAY_INFO_EXTERN(overlay); 2800 OVERLAY_INFO_EXTERN(overlay_0); 2801 OVERLAY_INFO_EXTERN(overlay_1); 2802 OVERLAY_INFO_EXTERN(overlay_2); 2803 OVERLAY_INFO_EXTERN(overlay_3); 2804 OVERLAY_INFO_EXTERN(overlay_4); 2805 OVERLAY_INFO_EXTERN(overlay_5); 2806 OVERLAY_INFO_EXTERN(overlay_6); 2807 OVERLAY_INFO_EXTERN(overlay_7); 2808 OVERLAY_INFO_EXTERN(overlay_8); 2809 OVERLAY_INFO_EXTERN(overlay_9); 2810 OVERLAY_INFO_EXTERN(overlay_10); 2811 OVERLAY_INFO_EXTERN(overlay_11); 2812 OVERLAY_INFO_EXTERN(overlay_12); 2813 OVERLAY_INFO_EXTERN(overlay_13); 2814 OVERLAY_INFO_EXTERN(overlay_15); 2815 OVERLAY_INFO_EXTERN(overlay_gpio_01); 2816 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 2817 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 2818 OVERLAY_INFO_EXTERN(overlay_gpio_03); 2819 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 2820 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 2821 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 2822 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 2823 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 2824 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 2825 2826 /* entries found by name */ 2827 static struct overlay_info overlays[] = { 2828 OVERLAY_INFO(overlay_base, -9999), 2829 OVERLAY_INFO(overlay, 0), 2830 OVERLAY_INFO(overlay_0, 0), 2831 OVERLAY_INFO(overlay_1, 0), 2832 OVERLAY_INFO(overlay_2, 0), 2833 OVERLAY_INFO(overlay_3, 0), 2834 OVERLAY_INFO(overlay_4, 0), 2835 OVERLAY_INFO(overlay_5, 0), 2836 OVERLAY_INFO(overlay_6, 0), 2837 OVERLAY_INFO(overlay_7, 0), 2838 OVERLAY_INFO(overlay_8, 0), 2839 OVERLAY_INFO(overlay_9, 0), 2840 OVERLAY_INFO(overlay_10, 0), 2841 OVERLAY_INFO(overlay_11, 0), 2842 OVERLAY_INFO(overlay_12, 0), 2843 OVERLAY_INFO(overlay_13, 0), 2844 OVERLAY_INFO(overlay_15, 0), 2845 OVERLAY_INFO(overlay_gpio_01, 0), 2846 OVERLAY_INFO(overlay_gpio_02a, 0), 2847 OVERLAY_INFO(overlay_gpio_02b, 0), 2848 OVERLAY_INFO(overlay_gpio_03, 0), 2849 OVERLAY_INFO(overlay_gpio_04a, 0), 2850 OVERLAY_INFO(overlay_gpio_04b, 0), 2851 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), 2852 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL), 2853 OVERLAY_INFO(overlay_bad_phandle, -EINVAL), 2854 OVERLAY_INFO(overlay_bad_symbol, -EINVAL), 2855 /* end marker */ 2856 {.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL} 2857 }; 2858 2859 static struct device_node *overlay_base_root; 2860 2861 static void * __init dt_alloc_memory(u64 size, u64 align) 2862 { 2863 void *ptr = memblock_alloc(size, align); 2864 2865 if (!ptr) 2866 panic("%s: Failed to allocate %llu bytes align=0x%llx\n", 2867 __func__, size, align); 2868 2869 return ptr; 2870 } 2871 2872 /* 2873 * Create base device tree for the overlay unittest. 2874 * 2875 * This is called from very early boot code. 2876 * 2877 * Do as much as possible the same way as done in __unflatten_device_tree 2878 * and other early boot steps for the normal FDT so that the overlay base 2879 * unflattened tree will have the same characteristics as the real tree 2880 * (such as having memory allocated by the early allocator). The goal 2881 * is to test "the real thing" as much as possible, and test "test setup 2882 * code" as little as possible. 2883 * 2884 * Have to stop before resolving phandles, because that uses kmalloc. 2885 */ 2886 void __init unittest_unflatten_overlay_base(void) 2887 { 2888 struct overlay_info *info; 2889 u32 data_size; 2890 void *new_fdt; 2891 u32 size; 2892 int found = 0; 2893 const char *overlay_name = "overlay_base"; 2894 2895 for (info = overlays; info && info->name; info++) { 2896 if (!strcmp(overlay_name, info->name)) { 2897 found = 1; 2898 break; 2899 } 2900 } 2901 if (!found) { 2902 pr_err("no overlay data for %s\n", overlay_name); 2903 return; 2904 } 2905 2906 info = &overlays[0]; 2907 2908 if (info->expected_result != -9999) { 2909 pr_err("No dtb 'overlay_base' to attach\n"); 2910 return; 2911 } 2912 2913 data_size = info->dtb_end - info->dtb_begin; 2914 if (!data_size) { 2915 pr_err("No dtb 'overlay_base' to attach\n"); 2916 return; 2917 } 2918 2919 size = fdt_totalsize(info->dtb_begin); 2920 if (size != data_size) { 2921 pr_err("dtb 'overlay_base' header totalsize != actual size"); 2922 return; 2923 } 2924 2925 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 2926 if (!new_fdt) { 2927 pr_err("alloc for dtb 'overlay_base' failed"); 2928 return; 2929 } 2930 2931 memcpy(new_fdt, info->dtb_begin, size); 2932 2933 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 2934 dt_alloc_memory, true); 2935 } 2936 2937 /* 2938 * The purpose of of_unittest_overlay_data_add is to add an 2939 * overlay in the normal fashion. This is a test of the whole 2940 * picture, instead of testing individual elements. 2941 * 2942 * A secondary purpose is to be able to verify that the contents of 2943 * /proc/device-tree/ contains the updated structure and values from 2944 * the overlay. That must be verified separately in user space. 2945 * 2946 * Return 0 on unexpected error. 2947 */ 2948 static int __init overlay_data_apply(const char *overlay_name, int *overlay_id) 2949 { 2950 struct overlay_info *info; 2951 int found = 0; 2952 int ret; 2953 u32 size; 2954 2955 for (info = overlays; info && info->name; info++) { 2956 if (!strcmp(overlay_name, info->name)) { 2957 found = 1; 2958 break; 2959 } 2960 } 2961 if (!found) { 2962 pr_err("no overlay data for %s\n", overlay_name); 2963 return 0; 2964 } 2965 2966 size = info->dtb_end - info->dtb_begin; 2967 if (!size) 2968 pr_err("no overlay data for %s\n", overlay_name); 2969 2970 ret = of_overlay_fdt_apply(info->dtb_begin, size, &info->overlay_id); 2971 if (overlay_id) 2972 *overlay_id = info->overlay_id; 2973 if (ret < 0) 2974 goto out; 2975 2976 pr_debug("%s applied\n", overlay_name); 2977 2978 out: 2979 if (ret != info->expected_result) 2980 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 2981 info->expected_result, ret, overlay_name); 2982 2983 return (ret == info->expected_result); 2984 } 2985 2986 /* 2987 * The purpose of of_unittest_overlay_high_level is to add an overlay 2988 * in the normal fashion. This is a test of the whole picture, 2989 * instead of individual elements. 2990 * 2991 * The first part of the function is _not_ normal overlay usage; it is 2992 * finishing splicing the base overlay device tree into the live tree. 2993 */ 2994 static __init void of_unittest_overlay_high_level(void) 2995 { 2996 struct device_node *last_sibling; 2997 struct device_node *np; 2998 struct device_node *of_symbols; 2999 struct device_node *overlay_base_symbols; 3000 struct device_node **pprev; 3001 struct property *prop; 3002 int ret; 3003 3004 if (!overlay_base_root) { 3005 unittest(0, "overlay_base_root not initialized\n"); 3006 return; 3007 } 3008 3009 /* 3010 * Could not fixup phandles in unittest_unflatten_overlay_base() 3011 * because kmalloc() was not yet available. 3012 */ 3013 of_overlay_mutex_lock(); 3014 of_resolve_phandles(overlay_base_root); 3015 of_overlay_mutex_unlock(); 3016 3017 3018 /* 3019 * do not allow overlay_base to duplicate any node already in 3020 * tree, this greatly simplifies the code 3021 */ 3022 3023 /* 3024 * remove overlay_base_root node "__local_fixups", after 3025 * being used by of_resolve_phandles() 3026 */ 3027 pprev = &overlay_base_root->child; 3028 for (np = overlay_base_root->child; np; np = np->sibling) { 3029 if (of_node_name_eq(np, "__local_fixups__")) { 3030 *pprev = np->sibling; 3031 break; 3032 } 3033 pprev = &np->sibling; 3034 } 3035 3036 /* remove overlay_base_root node "__symbols__" if in live tree */ 3037 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3038 if (of_symbols) { 3039 /* will have to graft properties from node into live tree */ 3040 pprev = &overlay_base_root->child; 3041 for (np = overlay_base_root->child; np; np = np->sibling) { 3042 if (of_node_name_eq(np, "__symbols__")) { 3043 overlay_base_symbols = np; 3044 *pprev = np->sibling; 3045 break; 3046 } 3047 pprev = &np->sibling; 3048 } 3049 } 3050 3051 for_each_child_of_node(overlay_base_root, np) { 3052 struct device_node *base_child; 3053 for_each_child_of_node(of_root, base_child) { 3054 if (!strcmp(np->full_name, base_child->full_name)) { 3055 unittest(0, "illegal node name in overlay_base %pOFn", 3056 np); 3057 return; 3058 } 3059 } 3060 } 3061 3062 /* 3063 * overlay 'overlay_base' is not allowed to have root 3064 * properties, so only need to splice nodes into main device tree. 3065 * 3066 * root node of *overlay_base_root will not be freed, it is lost 3067 * memory. 3068 */ 3069 3070 for (np = overlay_base_root->child; np; np = np->sibling) 3071 np->parent = of_root; 3072 3073 mutex_lock(&of_mutex); 3074 3075 for (last_sibling = np = of_root->child; np; np = np->sibling) 3076 last_sibling = np; 3077 3078 if (last_sibling) 3079 last_sibling->sibling = overlay_base_root->child; 3080 else 3081 of_root->child = overlay_base_root->child; 3082 3083 for_each_of_allnodes_from(overlay_base_root, np) 3084 __of_attach_node_sysfs(np); 3085 3086 if (of_symbols) { 3087 struct property *new_prop; 3088 for_each_property_of_node(overlay_base_symbols, prop) { 3089 3090 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3091 if (!new_prop) { 3092 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3093 prop->name); 3094 goto err_unlock; 3095 } 3096 if (__of_add_property(of_symbols, new_prop)) { 3097 kfree(new_prop->name); 3098 kfree(new_prop->value); 3099 kfree(new_prop); 3100 /* "name" auto-generated by unflatten */ 3101 if (!strcmp(prop->name, "name")) 3102 continue; 3103 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 3104 prop->name); 3105 goto err_unlock; 3106 } 3107 if (__of_add_property_sysfs(of_symbols, new_prop)) { 3108 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 3109 prop->name); 3110 goto err_unlock; 3111 } 3112 } 3113 } 3114 3115 mutex_unlock(&of_mutex); 3116 3117 3118 /* now do the normal overlay usage test */ 3119 3120 EXPECT_BEGIN(KERN_ERR, 3121 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3122 EXPECT_BEGIN(KERN_ERR, 3123 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3124 EXPECT_BEGIN(KERN_ERR, 3125 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3126 EXPECT_BEGIN(KERN_ERR, 3127 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3128 EXPECT_BEGIN(KERN_ERR, 3129 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3130 EXPECT_BEGIN(KERN_ERR, 3131 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3132 EXPECT_BEGIN(KERN_ERR, 3133 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3134 EXPECT_BEGIN(KERN_ERR, 3135 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3136 EXPECT_BEGIN(KERN_ERR, 3137 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3138 EXPECT_BEGIN(KERN_ERR, 3139 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3140 EXPECT_BEGIN(KERN_ERR, 3141 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3142 3143 ret = overlay_data_apply("overlay", NULL); 3144 3145 EXPECT_END(KERN_ERR, 3146 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 3147 EXPECT_END(KERN_ERR, 3148 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 3149 EXPECT_END(KERN_ERR, 3150 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 3151 EXPECT_END(KERN_ERR, 3152 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 3153 EXPECT_END(KERN_ERR, 3154 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 3155 EXPECT_END(KERN_ERR, 3156 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 3157 EXPECT_END(KERN_ERR, 3158 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 3159 EXPECT_END(KERN_ERR, 3160 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 3161 EXPECT_END(KERN_ERR, 3162 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 3163 EXPECT_END(KERN_ERR, 3164 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 3165 EXPECT_END(KERN_ERR, 3166 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 3167 3168 unittest(ret, "Adding overlay 'overlay' failed\n"); 3169 3170 EXPECT_BEGIN(KERN_ERR, 3171 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3172 EXPECT_BEGIN(KERN_ERR, 3173 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3174 3175 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 3176 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 3177 3178 EXPECT_END(KERN_ERR, 3179 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 3180 EXPECT_END(KERN_ERR, 3181 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 3182 3183 EXPECT_BEGIN(KERN_ERR, 3184 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3185 EXPECT_BEGIN(KERN_ERR, 3186 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3187 EXPECT_BEGIN(KERN_ERR, 3188 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3189 3190 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 3191 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 3192 3193 EXPECT_END(KERN_ERR, 3194 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 3195 EXPECT_END(KERN_ERR, 3196 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 3197 EXPECT_END(KERN_ERR, 3198 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 3199 3200 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 3201 "Adding overlay 'overlay_bad_phandle' failed\n"); 3202 3203 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 3204 "Adding overlay 'overlay_bad_symbol' failed\n"); 3205 3206 return; 3207 3208 err_unlock: 3209 mutex_unlock(&of_mutex); 3210 } 3211 3212 #else 3213 3214 static inline __init void of_unittest_overlay_high_level(void) {} 3215 3216 #endif 3217 3218 static int __init of_unittest(void) 3219 { 3220 struct device_node *np; 3221 int res; 3222 3223 pr_info("start of unittest - you will see error messages\n"); 3224 3225 /* adding data for unittest */ 3226 3227 if (IS_ENABLED(CONFIG_UML)) 3228 unittest_unflatten_overlay_base(); 3229 3230 res = unittest_data_add(); 3231 if (res) 3232 return res; 3233 if (!of_aliases) 3234 of_aliases = of_find_node_by_path("/aliases"); 3235 3236 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 3237 if (!np) { 3238 pr_info("No testcase data in device tree; not running tests\n"); 3239 return 0; 3240 } 3241 of_node_put(np); 3242 3243 of_unittest_check_tree_linkage(); 3244 of_unittest_check_phandles(); 3245 of_unittest_find_node_by_name(); 3246 of_unittest_dynamic(); 3247 of_unittest_parse_phandle_with_args(); 3248 of_unittest_parse_phandle_with_args_map(); 3249 of_unittest_printf(); 3250 of_unittest_property_string(); 3251 of_unittest_property_copy(); 3252 of_unittest_changeset(); 3253 of_unittest_parse_interrupts(); 3254 of_unittest_parse_interrupts_extended(); 3255 of_unittest_parse_dma_ranges(); 3256 of_unittest_pci_dma_ranges(); 3257 of_unittest_match_node(); 3258 of_unittest_platform_populate(); 3259 of_unittest_overlay(); 3260 3261 /* Double check linkage after removing testcase data */ 3262 of_unittest_check_tree_linkage(); 3263 3264 of_unittest_overlay_high_level(); 3265 3266 pr_info("end of unittest - %i passed, %i failed\n", 3267 unittest_results.passed, unittest_results.failed); 3268 3269 return 0; 3270 } 3271 late_initcall(of_unittest); 3272